Single frame pull rake

Details Single frame pull rake Single frame pull rake

1999-08-16

2001-04-10

Pezzuto, Robert E. (Department: 3671)

Harvesters

Horse rakes

Rear delivery

C056SDIG002

Reexamination Certificate

active

06212866

ABSTRACT:

BACKGROUND OF THE INVENTION
The present day single frame pull rake having rake wheels along the longitudinal axis of the frame will have a line of pull from the prime mover through the rake frame generally centered between the opposite ends of the rake frame. The problem with this arrangement is that the forces generated by the cut material moving along the length of the rake from the rake's forward end to the rearward discharge end increase and thus tend to reduce the rake's angle of attack. What is needed to overcome this problem is a rake having tongue and frame assemblies with a steerable support wheel that will balance the forces on the frame assembly such that a consistent angle of attack will be maintained.
SUMMARY OF THE INVENTION
A tongue assembly is hydraulically pivoted to a frame assembly having a steerable support wheel at its rear cut material discharge end with the line of pull from a prime mover extending substantially through the pivot axis between the tongue assembly and frame assembly and the pivot axis of the steerable rear wheel. Changing the angle of attach of the rake will vary the point at which the line of pull intersects with the rake frame varying between the discharge end at the steerable wheel of the rake to a point on the frame assembly extended rearwardly when the angle of attack is reduced.


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