Implement supporting and lifting linkage
AssigneeMassey-Ferguson Inc.
InventorJack Howard Rose
Life of this patent
Estimating the term…
Abstract
Linkage for supporting a mower beneath a tractor, having first and second pairs of interconnected links and with the first pair pivotally mounted at their forward ends to the front axle of tractor and rockable about a fore and aft horizontally disposed axis. The second pair of links is connected to the frame of the tractor. Foot pedal means connected to the linkage adjusts height of mower in opposition to force of spring means attached to linkage and frame which tends to urge linkage into folded condition beneath tractor frame. Rocking action of front axle through linkage causes mower to follow ground contour to provide an even cut.
Claims12
In a support for a mower beneath a tractor having a frame and an axle, scissor linkage means including draft link means and lift link means pivoted one to the other above said mower, means supporting said draft link means to said axle beneath said frame for vertical swinging movement, means supporting said lift link means to said frame for vertical swinging movement, pivot means connecting one portion of said mower to said draft link means and another pivot means connecting another portion of said mower to said lift link means, resilient means connected at one end to said frame and at its other end to said scissor linkage means to urge said scissor linkage and said mower upwardly to thereby overcome the effects of gravity acting thereon, lever means connected to said lift link means and pivotally mounted to said frame for moving said lift link means and said mower in relation to said frame, and foot treadle means connecting to said lever means for moving and maintaining said lever means in predetermined positions corresponding to predetermined elevations of said mower.
Dependencies are inferred from the claim text.