US3576227A — Attachment device for an agricultural machine

Claim 1

Independent Claim 249 words

A device for attaching an agricultural working implement to a prime mover such as a tractor, comprising a longitudinally extending carrier arm arranged to be located at the rear of the prime mover, said carrier arm having its longitudinal axis extending transversely of the direction of travel of the prime mover, said carrier arm having a first end and a second end, means for securing the first end of said carrier arm to the rear of the prime mover with the second end thereof arranged to extend outwardly from one side of the prime mover for connecting an agricultural working element thereto adapted to be positioned alongside the prime mover, power transmission means supported by said carrier arm and arranged to be connected at one end to a power takeoff means on the prime mover and at the other end to the agricultural working element for delivering power thereto, characterized therein that said carrier arm comprises a plurality of aligned interconnected hollow parts extending in the direction of its longitudinal axis, said interconnected parts comprising a first part arranged to be positioned rearwardly of the power takeoff means on the prime mover adjacent the first end of said carrier arm and a second part connected at one end to said first part and extending in the longitudinal direction of said carrier arm toward the second end thereof, and means interconnecting said first and second parts to permit relative rotational movement therebetween about the longitudinal axis of said carrier arm,

Claim 2

Independent Claim 249 words

A device for attaching an agricultural working implement to a prime mover such as a tractor, comprising a longitudinally extending carrier arm arranged to be located at the rear of the prime mover, said carrier arm having its longitudinal axis extending transversely of the direction of travel of the prime mover, said carrier arm having a first end and a second end, means for securing the first end of said carrier arm to the rear of the prime mover with the second end thereof arranged to extend outwardly from one side of the prime mover for connecting an agricultural working element thereto adapted to be positioned alongside the prime mover, power transmission means supported by said carrier arm and arranged to be connected at one end to a power takeoff means on the prime mover and at the other end to the agricultural working element for delivering power thereto, characterized therein that said carrier arm comprises a plurality of aligned interconnected hollow parts extending in the direction of its longitudinal axis, said interconnected parts comprising a first part arranged to be positioned rearwardly of the power takeoff means on the prime mover adjacent the first end of said carrier arm and a second part connected at one end to said first part and extending in the longitudinal direction of said carrier arm toward the second end thereof, and means interconnecting said first and second parts to permit relative rotational movement therebetween about the longitudinal axis of said carrier arm,

Claim 3

Dependent Claim 161 words

A device, as set forth in claim 1, wherein said carrier arm comprises at least a third part connected to said first part on the opposite end thereof from said second part, and said means for securing said carrier arm to the rear of the prime mover comprising a pair of laterally spaced support elements, one of said support elements being articulated to said second part and the other Said support element being articulated to said third part of said carrier arm, and the connections of said support elements to said second and third parts being spaced from said first part of said carrier arm. 3. A device, as set forth in claim 2, wherein said means interconnecting said first, second and third parts of said carrier arm, comprising members secured to the ends of said first part and adjacent ends of said second and third parts for permitting said first part to rotate relative to said second and third parts.

Claim 4

Dependent Claim 66 words

A device, as set forth in claim 3, wherein said means for securing the first end of said carrier arm to said prime mover comprises an upper link attached to the prime mover vertically above and spaced between said lower links and comprising a fork member attached at the ends thereof remote from said prime mover to said second and third parts of said carrier arm.

Claim 5

Dependent Claim 74 words

A device, as set forth in claim 2, wherein the axis of said first part extends in the transverse direction approximately perpendicular to the axis of the prime mover in its normal direction of travel, and the axis of said second part of said carrier arm being angularly disposed to the axis of said first part and forming an acute angle with the axis of the prime mover in its normal direction of travel.

Claim 6

Dependent Claim 23 words

A device, as set forth in claim 5, wherein the axes of said second and third parts slope downwardly from said first part.

Claim 7

Dependent Claim 30 words

A device, as set forth in claim 2, wherein said carrier arm comprises an auxiliary hollow part interconnecting the outer end of said second part with said agricultural working element.

Claim 8

Dependent Claim 35 words

A device, as set forth in claim 7, wherein said auxiliary part being arranged to be of different axial lengths for accommodating said carrier arm to prime movers of different wheelbase dimensions and tire widths.

Claim 9

Dependent Claim 137 words

A device, as set forth in claim 2, wherein said power transmission means comprises a power transmission first change-of-direction gear means located within said first part of said carrier arm, a power connection means attached to said change-of-direction gear means and extending in the axial direction of said prime mover, a first universal joint shaft interconnecting said power takeoff means on said prime mover and said power connection to said first change-of-direction gear means, and a second universal joint shaft mounted within said carrier arm, a second change-of-direction gear means secured to the end of said second universal joint shaft and intermeshed with said first direction change-of-direction gear means for transferring power taken from said power takeoff connection on said prime mover to the end of said second universal joint shaft for operating said agricultural working element.

Claim 10

Dependent Claim 40 words

A device, as set forth in claim 9, wherein said second universal joint shaft being adjustable in length for accommodating varying dimensions between the axis of said first universal joint shaft and the power connection to said agricultural working element.

Claim 11

Dependent Claim 25 words

A device, as set forth in claim 10, wherein said second universal joint shaft having a telescoping section for adjusting the length of said shaft.

Claim 12

Dependent Claim 46 words

A device, as set forth in claim 2, wherein a hydraulic lift unit is mounted on the rear of the power unit and is secured to said carrier arm for lifting and lowering the said carrier arm and said agricultural working element relative to the ground.

Claim 13

Dependent Claim 79 words

A device, as set forth in claim 12, wherein said hydraulic lift unit comprises an upwardly extending piston cylinder, a piston arm mounted in the lower end of said cylinder and arranged to be extended and retracted therein, the upper end of said cylinder being articulated to said prime mover, a crank arm secured to said second part of said carrier arm at one end and attached at its other end to the lower end of said piston arm.

Claim 14

Dependent Claim 45 words

A device, as set forth in claim 13, wherein said hydraulic lift unit comprises a hand pump for operating said hydraulic lift unit for lowering and lifting said craNk arm, said hand pump arranged to be accessible from the operator''s seat in said prime mover.

Claim 15

Dependent Claim 60 words

A device, as set forth in claim 1, wherein a traction tow connection is secured to the rear of said prime mover for attaching a wagon thereto, said connection being spaced from the means interconnecting said prime unit and said carrier arm for hitching up a wagon to said prime mover without interfering with the positioning of said agricultural implement.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1974-04-26	1974-10-26	1975-04-27	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1978-04-26	1978-10-26	1979-04-27	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1982-04-26	1982-10-26	1983-04-27	$7700.00	Window Closed / Lapsed

Attachment device for an agricultural machine

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