US Pat. No. 9,968,033

CROP MACHINE WITH AN ELECTRONICALLY CONTROLLED HYDRAULIC CYLINDER FLOTATION SYSTEM

MacDon Industries Ltd., ...

1. A crop machine comprising:a support vehicle for running over ground;
a crop component including a crop engaging system and at least one ground engaging component;
a support apparatus for supporting the crop component for upward and downward floating movement of the crop component so that a proportion of a supporting force to counterbalance the weight of the crop component is supplied by a lifting force from the support apparatus and a remaining portion is supplied by the ground engaging component caused by ground pressure on the ground;
the support apparatus comprising:
at least one hydraulic float cylinder having a piston movable in the cylinder;
the piston defining a chamber within said least one hydraulic float cylinder on one side of the piston into which hydraulic fluid under pressure is applied;
a valve arrangement for controlling the pressure of said hydraulic fluid such that a change in pressure in the chamber acts to change said lifting force applied to the crop component;
the valve arrangement having the characteristic that the valve arrangement acts to maintain the pressure of the hydraulic fluid in the chamber at a value which is dependent on a control signal applied to the valve arrangement;
an electronic control system for supplying said control signal to the valve arrangement;
wherein the control signal is indicative of a specific required pressure to be maintained in the chamber;
a sensor arranged to provide a movement signal to said electronic control system in response to said upward and downward floating movement of the crop component;
said electronic control system being programmed to calculate temporary changes to the control signal to provide said specific required pressure;
said electronic control system, to make said temporary changes, being programmed to be responsive to said movement signal;
wherein said electronic control system and said sensor are arranged upon detection of an end of acceleration in an upward floating movement of the crop component to change the control signal to decrease the lifting force.

US Pat. No. 9,185,838

CROP MACHINE WITH OPERATION OF TWO HYDRAULIC MACHINE ELEMENTS BASED ON MOVEMENT OF ONE MACHINE PART RELATIVE TO ANOTHER

Macdon Industries Ltd., ...

1. A crop engaging machine operable by a machine operating person comprising:
a frame mounted on at least one field ground wheel for forward movement during field operation across ground carrying a crop;
a crop engaging system mounted on the frame;
first and second movable elements on the machine;
first and second parts on the machine where the first part is movable relative to the second part between different positions
including a predetermined selected position;

a first hydraulic cylinder having a link connected to said first element on the machine so that operation of the first hydraulic
cylinder causes movement of the first element;

a second hydraulic cylinder having a link connected to said second element on the machine so that operation of the second
hydraulic cylinder causes movement of the second element;

a hydraulic fluid supply system providing a first hydraulic path supplying fluid operating the first hydraulic cylinder and
providing a second hydraulic path supplying fluid operating the second hydraulic cylinder;

and a valve operable between a first position in which the first hydraulic path is selected to operate the first hydraulic
cylinder and a second position in which the second hydraulic path is selected to operate the second hydraulic cylinder;

wherein the valve includes a manually operable component so that the valve is operable manually by the machine operating person;
wherein the valve includes a linkage so that the valve is operable by the machine operating person only at said predetermined
selected position of said first part relative to the said second part;

and wherein there is providing a visual indicator having a linkage operable in response to said movement of the first part
to said predetermined selected position to indicate to the machine operating person that it is possible to operate the valve.

US Pat. No. 9,392,747

FINGER DRIVE FOR A CROP FEED ROLLER

MacDon Industries Ltd., ...

1. A crop feeding apparatus comprising:
a rotatable roller mounted for rotation around a longitudinal axis such that an outer peripheral wall of the roller rotates;
a plurality of finger units mounted within the roller at axially spaced positions along the rotatable roller;
each finger unit comprising a pair of fingers and an inner finger member within the rotatable roller to which the pair of
fingers are affixed so that movement of the inner finger member acts to drive the fingers to retracted and extended positions;

the roller having in the peripheral wall thereof a plurality of pairs of finger guide holes at positions spaced axially of
the roller with each pair of finger guide holes associated with respective ones the pair of fingers of a respective one of
the finger units;

each pair of finger guide holes being located at diametrically opposed positions of the rotatable roller;
said pair of fingers of each respective finger unit extending diametrically;
such that a first of said pair of fingers extends through and is slidable along its length in a first one of said pair of
holes from a retracted position in which an end of the first one of the fingers is adjacent the peripheral wall to an extended
position in which the end of the first one of the fingers is spaced outwardly of the peripheral wall;

and such that a second of said pair of fingers extends through and is slidable along its length in a second one of said pair
of holes from a retracted position in which an end of the second one of the fingers is adjacent the peripheral wall to an
extended position in which the end of the second one of the fingers is spaced outwardly of the peripheral wall;

said first and second of the said pair of fingers being connected to the inner finger member such that the first of the pair
of fingers is moved to the retracted position as the second of the pair of fingers is moved to the extended position and vice
versa;

said inner finger member containing an elongate guide slot extending transversely to the axis of the roller and generally
transverse to the longitudinal direction of movement of the first and second fingers of the pair of fingers;

and a stationary guide member located within the roller and mounted within the guide slot at a position arranged to cause
the inner finger member with said first and second ones of the fingers attached thereto to reciprocate during the rotation
of the roller relative to the stationary guide member;

wherein the guide slot of the inner member is shaped so as to comprise at least one curved lobe portion.

US Pat. No. 9,415,651

REAR SUSPENSION FOR SWATHER TRACTOR

MacDon Industries Ltd., ...

1. A ground wheel assembly for supporting an agricultural vehicle comprising:
a ground wheel having an axle on which the wheel is carried for rotation;
a support arm having the axle attached at a lower end of the support arm;
a mounting assembly for attachment to a frame member of the agricultural vehicle;
and a suspension system for connecting the support arm to the mounting assembly to provide generally up and down movement
of the axle and the wheel carried thereby relative to the mounting assembly and the frame member attached thereto;

the suspension system comprising:
a first plate assembly attached to the mounting assembly;
a second plate assembly attached to the support arm;
the first and second plate assemblies being arranged for relative pivotal movement about an axis generally parallel to the
axle in response to up and down movement of the axle;

a first elastomeric block arrangement located between the first and second plate assemblies on a first side of the axis more
remote from the axle;

a second elastomeric block arrangement located between the first and second plate assemblies on a second side of the axis
closer to the axle;

the first and second elastomeric block arrangements being arranged such that upward movement of the axle causes compression
of the first and second elastomeric block arrangements.

US Pat. No. 9,386,742

PULL-TYPE DISK MOWING MACHINE TRANSPORT SYSTEM

MacDon Industries Ltd., ...

1. A pull-type disk mowing machine for towed movement by a tractor comprising:
a frame including a main transverse beam mounted on transversely spaced field ground wheels for forward movement during field
operation across ground carrying a crop;

a cutter bar comprising a row of cutter disks at spaced positions along the cutter bar with each cutter disk being rotatable
about a respective upstanding axis;

the cutter bar being carried on the main transverse beam in front of the main transverse beam in a transverse direction across
a front of the frame;

a hitch arm including at a forward end a coupling attachable to a hitch connector of a tractor;
the hitch arm being connected to the main transverse beam of the frame at a center line of the frame for pivotal movement
relative to the frame between a first field position inclined forwardly and outwardly toward a first end of the frame to a
second field position inclined outwardly and forwardly toward a second end of the frame;

a hitch actuator which moves the hitch arm between said first and second field positions and also to a transport position
the hitch arm extends generally along the main transverse beam in the transverse direction for towing the machine in the transverse
direction;

swath forming components for receiving and converging the cut crop into a crop discharge opening for forming a swath behind
the machine;

a conditioner at the crop discharge opening for engaging the cut crop to apply a conditioning action on the cut crop prior
to forming the swath;

a shield assembly behind the crop discharge opening extending in a shielding position rearwardly from the frame;
a transport assembly attached to the main transverse beam of the frame;
the transport assembly comprising:
a front transport ground wheel;
a rear transport ground wheel;
coupling components which connect the front and rear transport ground wheels to the frame for supporting the frame during
transport in said transport position;

actuation components which move said front transport ground wheel and said rear transport ground wheel relative to the frame
between said first and second field positions and the transport position;

in the first and second field positions:
the front and rear transport ground wheels are carried by the frame in a stored position spaced from the ground so that the
frame is carried on the field ground wheels;

the front and rear transport ground wheels are located in said stored position allowing said movement of the hitch arm between
said first and second field positions;

and in the transport position:
the front transport ground wheel engages the ground in front of the cutter bar and supports the frame during transport with
the field ground wheels raised from the ground;

the rear transport ground wheel engages the ground behind the main beam of the frame and supports the frame during transport
with the field ground wheels raised from the ground;

and a mounting arrangement mounting at least a portion of the shield arrangement for movement relative to the frame from the
shielding position, where the shield assembly extends rearwardly from the frame, to a retracted position where said at least
a portion of the shield arrangement is adjacent the main beam of the frame to allow the rear transport ground wheel to move
in said movement from the field position to the transport position.

US Pat. No. 9,185,837

PULL-TYPE CROP HARVESTING MACHINE TRANSPORT SYSTEM ACTUATED AT A PREDETERMINED ANGLE OF THE HITCH

Macdon Industries Ltd., ...

1. A pull-type crop engaging machine for towed movement by a tractor comprising:
a frame mounted on at least one field ground wheel for forward movement during field operation across ground carrying a crop;
a crop engaging system mounted in a transverse direction across a front of the frame so that the frame carries the crop engaging
system in the forward direction generally at right angles to the transverse direction into the crop;

a hitch arm extending from the frame to a coupling hitch arranged for attachment to a hitch connector of a tractor;
wherein the hitch arm is mounted at a center position of the frame;
a mounting connecting the hitch arm to the frame, wherein the mounting is operable to cause movement of the hitch arm to a
field position in which the hitch arm is movable by a steering system to different angles of the field position relative to
the frame between a first end field position inclined forwardly and outwardly toward a first end of the frame and a second
end field position inclined forwardly and outwardly toward a second end of the frame;

wherein the mounting connecting the hitch arm to the frame is operable to cause movement of the hitch arm to a transport position
separate from the field position in which the hitch arm extends from the frame generally in the transverse direction during
transport for towing the machine in the transverse direction;

at least one transport ground wheel attached to the frame for engaging the ground and supporting the frame during transport;
and a deployment apparatus for deploying movement of said at least one transport ground wheel relative to the frame;
said deployment apparatus including an actuating apparatus for deploying said movement relative to the frame and components
responsive to positioning of the hitch arm at a predetermined intermediate angle of the field position relative to the frame,
said intermediate angle being located between said first end field position and said second end field position;

wherein said actuating apparatus is initiated when said hitch arm is detected by said components to be at said predetermined
intermediate angle.

US Pat. No. 9,185,839

PULL-TYPE CROP HARVESTING MACHINE TRANSPORT SYSTEM INCLUDING A SWATH PROTECTION SHIELD

Macdon Industries Ltd., ...

1. A pull-type crop harvesting machine for towed movement by a tractor comprising:
a frame mounted on at least one field ground wheel for forward movement during field operation across ground carrying a crop;
a cutter system mounted in a transverse direction across a front of the frame so that the frame carries the cutter system
in the forward direction generally at right angles to the transverse direction into the standing crop for cutting the standing
crop;

swath forming components for receiving and converging the cut crop into a crop discharge opening for forming a swath behind
the machine;

a conditioner at the crop discharge opening for engaging the cut crop to apply a conditioning action on the cut crop prior
to forming the swath;

a protection shield behind the crop discharge opening extending in a raised shielding position rearwardly from the frame at
an angle to allow the crop from the conditioner to pass underneath the shield to form a swath and to engage material released
from the conditioner;

a hitch arm extending from the frame to a coupling hitch arranged for attachment to a tractor by which the frame is towed
in the forward direction across the ground;

a rear transport ground wheel attached to the frame for engaging the ground and supporting the frame during transport;
a frame member attaching said rear transport ground wheel to the frame;
an actuation arrangement which moves the frame member to carry said rear transport ground wheel in movement relative to the
frame between a field position in which the rear transport ground wheel is raised from the ground for field operation and
a transport position in which the rear transport ground wheel is in contact with the ground;

a mounting arrangement mounting at least a portion of the protection shield for movement relative to the frame from the raised
shielding position downwardly to allow the rear transport ground wheel to move in said movement from the field position to
the transport position.

US Pat. No. 9,179,592

PULL-TYPE CROP HARVESTING MACHINE TRANSPORT SYSTEM WHERE THE MACHINE REMAINS BALANCED ON TRANSPORT WHEELS AND THE HITCH AS THE TRANSPORT SYSTEM IS DEPLOYED

MacDon Industries Ltd., ...

1. A pull-type crop engaging machine for towed movement by a tractor comprising:
a frame mounted on transversely spaced field ground wheels for forward movement during field operation across ground carrying
a crop;

a crop engaging system mounted in a transverse direction across a front of the frame so that the frame carries the crop engaging
system in the forward direction generally at right angles to the transverse direction into the crop;

a hitch arm extending from the frame to a coupling hitch arranged for attachment to a hitch connector of a tractor by which
the frame is towed in the forward direction across the ground while running on the ground wheels;

a mounting connecting the hitch arm to the frame, wherein the mounting is operable to cause movement of the hitch arm so that
in the field position the hitch arm extends from the frame generally forwardly for towing the machine in the forward direction
and in the transport position the hitch arm extends from the frame generally in the transverse direction for towing the machine
in the transverse direction;

and a transport assembly attached to the frame for transporting the frame and the crop engaging system carried thereon in
the transverse direction during transport towed by the tractor through the hitch arm;

the transport assembly comprising:
transport ground wheels including a front transport ground wheel for engaging the ground and supporting the frame during transport;
a frame member attaching said front transport ground wheel to the frame;
an actuation arrangement which includes a first part which operates said mounting to move said hitch arm between said transport
position and the field position and a second part which moves the frame member to carry said front transport ground wheel
between a field position in which said front transport ground wheel is raised from the ground for field operation and a transport
position in which said front transport ground wheel is in contact with the ground;

in the transport position said front transport ground wheel being at a position on a forward side of a line in the transverse
direction containing the center of gravity of the machine;

the first and second parts of the actuation arrangement being linked by a linkage arrangement which acts to move the hitch
arm from the field position to the transport position and at least partly simultaneously to move said front transport ground
wheel to said position on said forward side of said line in such a manner that the machine remains balanced on the hitch arm
and said transport ground wheels while the hitch arm remains attached to the tractor during said movement to said transport
position.

US Pat. No. 9,439,350

POINTED SICKLE BLADE FOR USE IN A SICKLE CUTTER SYSTEM WITH INCREASED GROUND SPEED

MacDon Industries Ltd., ...

1. A sickle cutting apparatus comprising:
a frame structure arranged for forward travel over ground having a standing crop thereon;
a cutter bar secured to the frame structure and extending transversely across a front end of said frame structure;
a plurality of knife guards mounted along the cutter bar and projecting forwardly therefrom;
each of said guards comprising a base portion for mounting on the cutter bar and at least one guard finger extending forwardly
from the base portion so that the fingers are arranged in a row along the cutter bar with a space between each finger and
a next finger allowing crop to enter the space;

each guard finger having an upwardly facing ledger surface with opposed side edges thereof arranged to provide first and second
shearing edges;

a sickle bar mounted in transversely extending position and being driven for reciprocating movement relative to said guard
fingers;

the sickle bar having a plurality of knife blades mounted thereon for movement therewith;
each of the knife blades comprising a plate having a cutting surface for cooperating with the ledger surface of at least one
of the knife guard fingers and an opposed surface with a substantially constant thickness of the plate between the cutting
surface and the opposed surface;

each of the knife blades having on first and second sides of a center line of the blade first and second side cutting surfaces
to cooperate with said shearing edges;

each side cutting surface being beveled from the opposed surface to the cutting surface of the knife blade defining a cutting
edge at the cutting surface;

the blade having a front point portion in front of the beveled side cutting surfaces;
wherein the front point portion has side surfaces of the front point portion converging to a front apex of the front point
portion having an apex surface generally at right angles to the cutting surface and the opposed surface;

and wherein the apex surface of the front point portion is not beveled with the thickness of the plate at the front apex of
the front point portion being equal to said constant thickness.

US Pat. No. 9,179,591

PULL-TYPE CROP HARVESTING MACHINE TRANSPORT SYSTEM WHERE A TRANSPORT WHEEL CAN MOVE UNDERNEATH THE CROP ENGAGING SYSTEM

MacDon Industries Ltd., ...

1. A pull-type crop engaging machine for towed movement by a tractor comprising:
a frame mounted on transversely spaced field ground wheels for forward movement during field operation across ground carrying
a crop;

a crop engaging system mounted in a transverse direction across a front of the frame so that the frame carries the crop engaging
system in the forward direction generally at right angles to the transverse direction into the crop;

a hitch arm extending from the frame to a forward end of the hitch arm coupling hitch arranged for attachment to a hitch connector
of a tractor by which the frame is towed in the forward direction across the ground while running on the ground wheels;

a hitch arm extending from the frame to a coupling hitch arranged for attachment to a hitch connector of a tractor by which
the frame is towed in the forward direction across the ground while running on the ground wheels;

a mounting connecting the hitch arm to the frame, wherein the mounting is operable to cause movement of the hitch arm so that
in the field position the hitch arm extends from the frame generally forwardly for towing the machine in the forward direction
and in the transport position the hitch arm extends from the frame generally in the transverse direction for towing the machine
in the transverse direction;

and a transport assembly attached to the frame for transporting the frame and the crop engaging system carried thereon in
the transverse direction during transport towed by the tractor through the hitch arm;

the transport assembly comprising:
a front transport ground wheel for engaging the ground in front of the crop engaging system and supporting the frame during
transport;

a frame member attaching said front transport ground wheel to the frame;
an actuation arrangement which moves the frame member to carry said front transport ground wheel between a first position
in which the front transport ground wheel is raised from the ground for field operation and a second transport position in
which said front transport ground wheel is in contact with the ground with the field ground wheels lifted from the ground;

said frame member being shaped and arranged to carry the front transport ground wheel when moved by said actuator mechanism
to the second transport position while the crop engaging system is raised by components in engagement with the ground to a
height in which the front transport ground wheel passes in movement underneath the crop engaging system.

US Pat. No. 9,796,419

SPEED AND STEERING CONTROL OF A HYDRAULICALLY DRIVEN TRACTOR

MacDon Industries Ltd., ...

1. A hydraulically driven tractor comprising:
a tractor frame;
an engine mounted on the tractor frame;
a cab mounted on the tractor frame for a tractor driver;
a first and a second driven wheels of the tractor mounted at a driven end of the tractor, the first driven wheel including
a first hydraulic drive motor for driving the first wheel and the second driven wheel including a second hydraulic drive motor
for driving the second wheel;

two non-driven castor wheels of the tractor mounted at a second end of the tractor;
the driven end having mounting assemblies for supporting a crop cutting header at a position in front of the driven end and
in front of the cab when the driven end is forwards;

a first and a second hydraulic pump each driven by the engine for generating a source of hydraulic fluid under pressure;
the first hydraulic pump being arranged for driving the first hydraulic motor of the first driven wheel and the second hydraulic
pump arranged for driving the second hydraulic motor of the second driven wheel;

the first hydraulic pump being operable to vary the displacement of the first hydraulic pump between a minimum and a maximum
to vary the flow rate of fluid generated for supply to the first hydraulic motor as the first hydraulic pump is driven;

the second hydraulic pump being operable to vary the displacement of the second pump between a minimum and a maximum to vary
the flow rate of fluid generated for supply to the second hydraulic motor as the second pump is driven;

the first hydraulic drive motor having a displacement control actuator which is operable by a control unit so as to provide
continuous stepless adjustment of the displacement of the first hydraulic drive motor between a minimum and a maximum to vary
a ground speed of the first driven wheel relative to a flow rate of the fluid supplied to the first hydraulic motor;

the second hydraulic drive motor having a displacement control actuator which is operable by a control unit so as to provide
continuous stepless adjustment of the displacement of the second hydraulic drive motor between a minimum and a maximum to
vary a ground speed of the second driven wheel relative to a flow rate of the fluid supplied to the second hydraulic motor;

a steering control operable to provide a steering output between left and right positions through a center position;
a speed control operable to provide a speed output between forward and reverse positions through a neutral position;
the speed control being arranged to vary the displacement of the first hydraulic pump and/or the first hydraulic motor to
vary a ground speed of the first driven wheel;

the speed control being arranged to vary the displacement of the second hydraulic pump and/or the second hydraulic motor to
vary a ground speed of the second driven wheel;

the speed control being arranged to vary the ground speed of the first and second driven wheels symmetrically to vary a common
ground speed of the tractor;

the steering control being arranged to vary the displacement of the first hydraulic motor and/or the first hydraulic pump
to vary a ground speed of the first driven wheel;

the steering control being arranged to vary the displacement of the second hydraulic motor and/or the second hydraulic pump
to vary a ground speed of the second driven wheel;

the steering control being arranged to vary the ground speed of the first and second driven wheels differentially to cause
steering of the tractor to a desired direction;

wherein the speed control provides a first output to control displacement of the first and second motors and second output
to control displacement of the first and second pumps;

and wherein the first output causing adjustment of the first and second motors is arranged so that the first and second motors
remain at maximum displacement for a first part of an adjustment of the speed control.

US Pat. No. 9,775,295

DRIVE SYSTEM FOR THE REEL OF A CROP HARVESTING HEADER

MacDon Industries Ltd., ...

1. A crop harvesting header comprising:
a header frame structure;
a cutter bar arranged across a forward edge of the header frame structure;
a cut crop transport arrangement mounted on the header frame structure for receiving and transporting the cut crop;
and a reel mounted on the header frame structure;
and a reel drive mechanism driving rotation of a reel input drive shaft of the reel about a reel axis generally parallel to
the cutter bar, the reel drive mechanism comprising:

a variable speed drive motor having a drive output shaft and a controller which varies an output speed of the drive motor;
and a drive transmission connected between the drive output shaft of the drive motor and the reel input drive shaft;
the drive transmission including first components which are selected to provide a first drive ratio between the drive output
shaft and the reel input drive shaft and second components which are selected to provide a second drive ratio, different from
the first drive ratio, between the drive output shaft and the reel input drive shaft.

US Pat. No. 9,706,707

CROP HARVESTING MACHINE WITH A HEADER SEPARABLE FROM A TRACTOR

MacDon Industries Ltd., ...

1. A crop harvesting machine comprising:
a tractor having a front and a rear with the front arranged forward of the rear when moving in a working direction;
a driver cabin on the tractor;
ground wheels rotatably supported on the tractor frame for movement of the tractor in the working direction across the ground
which carries a crop to be harvested;

an engine and hydraulic pump mounted on the tractor for providing a pressurized fluid output;
a header having an elongate support structure arranged across the front of the tractor extending from one end of the header
to an opposed end of the header;

the header including a cutter system extending across a width of the header for cutting a standing crop as the header is moved
over the ground;

the header including a hydraulic header drive system for driving at least the cutter system;
a mounting assembly carrying the header at a position forward of the front of the tractor so as to support the header in movement
over the ground as the tractor is moved in the working direction;

the mounting assembly including linkages mounting the header on the tractor for movements of the header relative to the tractor
at least in a first direction upwardly and downwardly and in a second direction of twisting movement where said one end of
the header is movable upwardly and downward relative to said opposed end of the header;

the mounting assembly being releasable for disconnection of the header from the tractor;
a flexible conduit assembly having one or more conduits having an extent from the tractor to the header for connecting the
pressurized fluid from the tractor to the hydraulic header drive system;

and a conduit support member for supporting the conduit assembly in at least part of the extent from the tractor to the header;
the conduit support member being connected by a rear connection member at a rearward end of the conduit support member to
the tractor;

the conduit support member being connected by a front connection member at a forward end of the support conduit member to
the header;

one of the front and rear connection members forming a releasable coupling for disconnection of the conduit support member
from either the tractor or the header;

the conduit support member including articulation components providing articulation of said forward end of the conduit support
member relative to the rearward end of the conduit support member so as to accommodate said movements of the header relative
to the tractor;

the conduit support member including support components providing support to the conduit assembly to prevent collapse thereof
when said releasable coupling is disconnected.

US Pat. No. 9,877,429

SWATHER TRACTOR WITH A COMPRESSOR ATTACHMENT

MacDon Industries Ltd., ...

1. A swather comprising:
a tractor frame having a cab;
a header mounted on support members at a forward end of the frame to be moved in a longitudinal working direction across the
ground;

the header being arranged in a working position to cut a standing crop and to form a swath of the crop for deposit on the
ground behind the tractor;

a first pair of front ground wheels mounted on the frame at positions spaced transversely of the frame adjacent the front
end for supporting the tractor adjacent the header;

a second pair of rear ground wheels mounted on the frame at positions spaced transversely of the frame adjacent a rear end
of the tractor and spaced to allow the passage of the swath between the second pair of wheels;

a swath compression member for applying a downward compression force on the swath;
a mounting assembly for attaching the swath compression member to the tractor for forward movement with the tractor;
the swath compression member comprising a panel member and the mounting assembly mounting a forward portion of the panel member
on the swather for movement therewith and for pivotal movement relative thereto about a substantially horizontal axis transverse
to the direction of movement of the swather, the panel member having a downwardly and rearwardly inclined undersurface thereof
arranged to engage the swath formed by the swather as it lies on the stubble, the panel member being biased downwardly by
the mounting assembly into contact with the swath to compress the swath into the stubble;

wherein the mounting assembly includes an actuator operable in response to a signal indicative of a speed and/or direction
of travel of the tractor for raising the panel member from the swath to a retracted position.

US Pat. No. 9,775,291

GAUGE WHEELS FOR A MULTI-SECTION AGRICULTURAL HEADER

MacDon Industries Ltd., ...

1. A crop harvesting header comprising:
a main frame structure extending across a width of the header;
a mounting assembly for carrying the main frame structure on a propulsion vehicle by which the header is transported in movement
in a forward direction generally at right angles to the width across ground including a crop to be harvested;

a crop receiving table carried on the main frame structure across the width of the header;
a cutter bar across a front of the table arranged to move over the ground in a cutting action and carrying a sickle knife
operable for cutting the crop as the header is moved forwardly across the ground for depositing the crop onto the table;

a skid element on the main frame structure for engaging the ground so as to receive lifting forces from the ground;
the skid element located behind the cutter bar and extending along the length of the cutter bar so that the cutter bar is
supported adjacent the ground for cutting crop close to the around as the skid element slides over the ground;

a crop transport system on the table for moving the cut crop toward a discharge location of the header;
the harvesting header being operable in a first mode of operation with the skid element engaging the ground and the cutter
bar adjacent the ground and in a second mode of operation with the skid element and the cutter bar raised away from the ground;

the main frame structure including a center frame portion, a first wing frame portion and a second wing frame portion;
the first wing frame portion being connected to the center frame portion by a first pivot coupling which provides pivotal
movement of the first wing frame portion relative to the center frame portion about a first pivot axis extending in a plane
parallel to the forward direction;

the first pivot coupling acting to support weight from the first wing frame portion while outboard weight from the first wing
frame portion outboard of the first pivot coupling rotates the first wing frame portion about the first pivot coupling in
a downward direction;

the second wing frame portion being connected to the center frame portion by a second pivot coupling which provides pivotal
movement of the second wing frame portion relative to the center frame portion about a second pivot axis extending in a plane
parallel to the forward direction;

the second pivot coupling acting to support weight from the second wing frame portion while outboard weight from the second
wing frame portion outboard of the second pivot coupling rotates the second wing frame portion about the second pivot coupling
in a downward direction;

the mounting assembly including a float suspension system connected to the center frame portion providing a variable lifting
force from the propulsion vehicle acting to support the main frame structure for floating movement relative to the propulsion
vehicle;

a first interconnecting float linkage connected between the center frame portion and the first wing frame portion which communicates
a first variable lifting force from the center frame portion to the first wing frame portion against the outboard weight of
the first wing frame portion;

a second interconnecting linkage connected between the center frame portion and the second wing frame portion which communicates
a second variable lifting force from the center frame portion to the second wing frame portion against the outboard weight
of the second wing frame portion;

in the first mode of operation with the skid element engaging the ground, the float suspension system and first and second
interconnecting linkages provide a downforce from the skid element on the ground which is balanced between the center frame
portion and the first and second wing frame portions;

and a gauging system used in the second mode of operation comprising:
a first ground engaging member supported on the first wing frame portion at a location spaced outwardly from the center frame
portion for engaging the ground so as to receive lifting forces from the ground;

a second ground engaging member supported on the second wing frame portion at a location spaced outwardly from the center
frame portion for engaging the ground so as to receive lifting forces from the ground; and

at least one additional ground engaging member supported on the main frame structure proximate the center frame portion for
engaging the ground so as to receive lifting forces from the ground;

in the second mode of operation, the first, second and at least one additional ground engaging members collectively supporting
the skid element spaced above the ground while the first and second wing frame portions pivot relative to the center frame
portion in response to changes in ground height.

US Pat. No. 9,655,299

ADJUSTABLE GUARD ASSEMBLY FOR A SICKLE KNIFE

MacDon Industries Ltd., ...

1. A crop cutting apparatus comprising:
a forwardly facing support bar extending across a width of the apparatus carried for movement across the ground in a forward
movement for cutting a standing crop, the support bar having an upper surface and a lower surface;

a knife arrangement for reciprocating movement along the support bar including a plurality of blades thereon;
a plurality of upper knife guards and a corresponding plurality of lower knife guards arranged in cooperating pairs and mounted
above and below the support bar respectively;

each pair of upper and lower knife guards including at least two fingers extending forwardly from the support bar so that
each finger of the upper knife guard overlies a corresponding finger of the lower knife guard to define a channel therebetween
across the front of the support bar in which the knife arrangement reciprocates, a width of the channel between the fingers
of the upper knife guard and the lower knife guard being adjustable;

each of the plurality of upper knife guards comprising a transverse bar holding said at least two fingers thereof as a rigid
integral structure for common adjustment movement;

each of said plurality of lower knife guards being clamped to said lower surface of the support bar by a respective pair of
hold down screw fasteners spaced longitudinally of the support bar and lying on a transverse line along the support bar;

a compressible resilient pad located between an under surface of the respective one of the plurality of upper knife guards
and the upper surface of the support bar;

said respective pair of hold down screw fasteners passing through the respective one of said plurality of lower knife guards,
through the support bar and through the respective one of said plurality of upper knife guards to clamp the respective one
of the plurality of lower knife guards to the lower surface of the support bar and to apply forces pulling the respective
one of the plurality of upper knife guards toward the upper surface of the support bar and apply forces in a direction to
apply compression to the compressible resilient pad located between the under surface of the respective one of the plurality
of upper knife guards and the upper surface of the support bar;

and at least one adjustment screw engaged between said respective one of the plurality of upper knife guards and the support
bar on a rearward side of the transverse line opposite to said forwardly extending fingers;

said at least one adjustment screw being adjustable to change the spacing between the under surface of the respective one
of the plurality of upper knife guards and the support bar at said at least one adjustment screw so as to adjust the width
of the channel on a side of the transverse line opposite to the adjustment screw by increasing or decreasing an amount of
compression of the compressible resilient pad;

wherein the compressible resilient pad includes a bar extending along the support bar on the side of the transverse line opposite
to the adjustment screw;

and wherein the bar of the compressible resilient pad terminates at the transverse line.

US Pat. No. 9,622,405

ADJUSTABLE HOLD-DOWN ASSEMBLY FOR A SICKLE CUTTER SYSTEM

Macdon Industries Ltd., ...

1. A sickle cuffing apparatus comprising:
a plurality of stationary knife guards arranged to be mounted along a cutter bar;
a sickle bar mounted in transversely extending position and arranged to be driven for reciprocating movement relative to said
knife guards;

the sickle bar having a plurality of knife blades mounted thereon for movement therewith;
each of the knife blades having a cutting surface for passing across the knife guards;
each of the knife blades having on first and second sides first and second side cutting edges;
each knife guard comprising:
a base portion arranged to be mounted on the cutter bar;
at least one guard finger mounted on the base portion so that the guard fingers are arranged to be mounted in a row along
the cutter bar;

each guard finger having an upwardly facing ledger surface with opposed side edges thereof arranged to provide first and second
shearing edges which cooperate with said side cutting edges of said knife blades;

and a plurality of hold-down members arranged to be mounted along the cutter bar;
each hold-down member comprising a base mounting member arranged to be attached to the cutter bar;
each hold-down member comprising two hold-down fingers thereon carried on the base mounting member arranged to be at positions
spaced longitudinally of the cutter bar so as to be cantilevered forwardly from the cutter bar to a position of a front tip
of each hold-down finger located at a settable spacing in front of the sickle bar above the ledger surface of a respective
one of the guard fingers;

wherein each of the base mounting members is arranged to be attached to the cutter bar by at least two threaded fasteners
passing through the cutter bar and through the base mounting member which can be adjusted to tighten the base mounting member
onto the cutter bar;

the threaded fasteners having axes of the threaded fasteners lying at spaced positions along an imaginary line longitudinally
of the cutter bar;

wherein each of said hold-down fingers is arranged to be adjustable on the cutter bar to change said settable spacing thereof;
wherein each of said hold-down fingers is pivotal relative to the cutter bar about a fulcrum extending longitudinally of the
cutter bar and located at a position forwardly of said imaginary line;

wherein each of the two hold-down fingers includes a respective adjustment screw for individual adjustment of each of the
hold-down fingers by extension of the respective adjustment screw, where each of the adjustment screws is located at a position
rearwardly of said imaginary line;

and wherein the two hold-down fingers are connected by an arrangement which is which is shaped and arranged to provide lateral
strength between the two hold-down fingers and to be sufficiently flexible to allow twisting thereof to provide said individual
adjustments by allowing each of the hold-down fingers to be adjusted independently of the other.

US Pat. No. 9,113,593

REDUCTION IN CUTTING INEFFICIENCY OF A SICKLE CUTTER SYSTEM

MacDon Industries Ltd, W...

1. A sickle cutting apparatus comprising:
a frame structure arranged for forward travel over ground having a standing crop thereon;
a cutter bar secured to the frame structure and extending transversely across a front end of said frame structure;
a plurality of stationary knife guards mounted along the cutter bar and projecting forwardly therefrom;
each of said guards having at least one guard finger so that the fingers are arranged in a row along the cutter bar with a
space between each finger and the next allowing crop to enter the space up to a position of engagement with a rear element
along the cutter bar;

each guard finger having an upwardly facing ledger surface with opposed side edges thereof arranged to provide first and second
shearing edges;

a sickle bar mounted in transversely extending position and being driven for reciprocating movement relative to said guard
fingers;

the sickle bar having a plurality of knife blades mounted thereon for movement therewith;
each of the knife blades having a cutting surface for passing across the ledger surface of the knife guard fingers and an
opposed surface;

each of the knife blades having on first and second sides first and second side cutting edges which are beveled from the opposed
surface to the cutting surface to cooperate with said shearing edges of said guard fingers;

the guard fingers and knife blades being arranged so as to provide a cutting action on the crop in which each knife blade
reciprocates back and forth between the guard fingers;

wherein the guard fingers, knife blades and the rear element are shaped and arranged to provide a percentage cutting inefficiency
calculated as follows:

within a rectangular area defined by the length of the knife stroke and the ground distance traveled during one knife cycle,
the sum of any areas of crop in which the crop remains uncut until it reaches an element of the cutting system by which the
crop is pushed forward, without cutting, by contact with the element as the element moves forward;

divided by:
the rectangular area defined by the length of the knife stroke and the ground distance traveled during one knife cycle;
EITHER
wherein the percentage cutting inefficiency, calculated at 6 mph and at a sickle stroke rate set at a value which provides
inertia values equal to those obtained by a three inch stroke at 600 rpm, is less than 30%;

OR
wherein the percentage cutting inefficiency, calculated at 10 mph and at a sickle stroke rate set at a value which provides
inertia values equal to those obtained by a three inch stroke at 750 rpm, is less than 35%;

OR
wherein the percentage cutting inefficiency, calculated at 14 mph and at a sickle stroke rate set at a value which provides
inertia values equal to those obtained by a three inch stroke at 900 rpm, is less than 40%.

US Pat. No. 9,936,641

TINE TUBE BUSHING FOR THE REEL OF A CROP HARVESTING HEADER

MacDon Industries Ltd., ...

1. A crop harvesting header comprising:a header frame structure arranged for movement in a direction of working movement across ground carrying a crop to be harvested;
a cutter bar arranged across a forward edge of the header frame structure for cutting the crop;
a cut crop transport arrangement mounted on the header frame structure for receiving and transporting the cut crop for further processing;
and a reel for controlling movement of the crop in the area over the cutter bar;
the reel being mounted on the header frame structure for movement with the header in the direction of movement;
a reel drive mechanism for driving rotation of the reel about a reel axis generally parallel to the cutter bar;
the reel having a plurality of reel bats at spaced positions around the reel axis;
each reel bat having a tine tube and a plurality of tines mounted on the tine tube, the tines projecting generally radially outwardly from an axis of the tine tube which axis is parallel to the reel axis;
the tine tube comprising a peripheral wall surrounding a hollow interior;
each of the reel bats being pivotal about its respective axis so as to vary the angle of the tines about the bat axis as the reel rotates;
the reel including a plurality of tine tube support members arranged at radially spaced positions around the reel axis and at axially spaced positions along the reel axis so that each tine tube is supported at its radial position around the reel axis at positions longitudinally spaced along the tine tube;
and a plurality of tine tube support bearings each connecting a respective one of the tine tube support members to a respective one of the tine tubes;
each of the tine tube support bearings comprising:
a cylindrical collar carried on the respective tine tube support member surrounding the bat axis and having an internal cylindrical bearing surface;
a cylindrical bearing member within the cylindrical collar and having an external cylindrical bearing surface in sliding bearing engagement with the internal bearing surface of the collar and an internal surface surrounding the tine tube;
the hollow tine tube at the bearing member having a transverse hole across the tube through the peripheral wall;
the peripheral wall having opposed indented recesses each at a respective end of the transverse hole;
the cylindrical bearing member having opposed projecting portions projecting inwardly from the internal surface thereof and each extending into a respective one of the indented recesses;
and at least one fastener member extending into the hole and the projecting portions so as to hold the projecting portions in the indented recesses;
said fastener member being axially aligned with the internal cylindrical bearing surface of the cylindrical collar;
outer ends of said at least one fastener member being recessed from the external cylindrical bearing surface of the cylindrical bearing member.

US Pat. No. 10,216,156

CONTROLLING CUTTING HEIGHT AND ANGLE OF A COMBINE HEADER

MacDon Industries Ltd., ...

1. A header assembly for attachment to a feeder house of a combine harvester for movement in a forward working direction across a field carrying a standing crop to be harvested, the header assembly comprising:a header comprising:
a header frame;
a sickle cutter bar carried across a front of the header frame for cutting standing crop;
a reel for carrying the crop over the cutter bar;
a crop transport device for transporting the crop inwardly from either end of the header to a collection location for feeding to the combine harvester;
a mounting arrangement for mounting the header frame on the feeder house of the combine harvester;
first and second ground engaging gauge wheels on the header frame one on each side of the feeder house;
the ground engaging gauge wheels being mounted on the header frame at a position spaced rearwardly of the cutter bar;
first and second adjustable links for adjusting the height of the first and second gauge wheels respectively relative to the header frame in response to a height input to adjust a cutter bar height;
an angle adjustment member for tilting the header frame forwardly and rearwardly about an axis transverse to the forward working direction relative to said mounting arrangement in response to an angle input to adjust an angle the header;
wherein the adjustment of the adjustment member to adjust the angle of the header also changes the height of the cutter bar and also the adjustment of the first and second adjustable links to adjust the height of the cutter bar also changes the angle of the header;
a control system operable by a driver including a driver interface arranged for input by the driver of:
a first manually operable input operable by the driver acting to set a value of required height of the cutter bar from the ground;
and a second manually operable input operable by the driver acting to set a value of required angle of the header relative to the ground about said axis;
the control system including a program which is responsive to the first manually operable input for generating both said height input to said first and second adjustable links and said angle input to said angle adjustment member to automatically attain said set value of required height of the cutter bar from the ground; and
the program of the control system also being a responsive to the second manually operable input for generating both said height input to said first and second adjustable links and said angle input to said angle adjustment member to automatically attain said set value of angle of the header relative to the ground about said axis.

US Pat. No. 10,149,431

HALTING THE SICKLE BAR OF A SICKLE CUTTING APPARATUS AT A PREDETERMINED POSITION

MacDon Industries Ltd., ...

1. A crop cutting apparatus comprising:a frame structure arranged for forward travel over ground having a standing crop thereon;
a cutter bar secured to the frame structure and extending transversely across a front end of said frame structure;
a plurality of knife guards mounted in spaced relation along said cutter bar and projecting forwardly therefrom;
each of said guards having a ledger surface with opposed side edges thereof arranged to provide first and second shearing edges;
at least one sickle bar mounted in transversely extending position driven for reciprocating movement relative to said knife guards and having a plurality of sickle knife blades mounted thereon for movement therewith with each of the sickle knife blades having two side cutting edges which cooperate with said shearing edges of said knife guards;
a drive system for driving said at least one sickle bar through repeated cycles of reciprocating movement from start-up through to a shut-down;
the drive system being arranged to halt said at least one sickle bar at said shut-down at a predetermined position of the sickle knife blades relative to the knife guards in which each of the sickle knife blades is located between two adjacent knife guards allowing removal and replacement of at least one of the sickle knife blades from said adjacent knife guards at said predetermined position.