Round bale trailer

Details Round bale trailer Round bale trailer

1988-09-01

1990-03-20

Spar, Robert J.

Material or article handling

Round hay bale handling

414470, 414483, 414501, 414552, 414111, 298 10, 298 18, B60P 148

Patent

active

049096940

ABSTRACT:
A round bale trailer includes a trailer that travels in a hay field in the same direction that the field is normally worked to approach round hay bales in a direction perpendicular to the bales' axes. A U-shaped fork on the round bale trailer engages three sides of the bale. A closing arm on the fork closes to engage the bale on the fourth side. Continued motion of the trailer causes the fork and bale to rotate together 90 degrees about a vertical axis such that the fork closes to nest within a generally U-shaped frame. A hydraulic cylinder immediately operates to pivot the frame and fork to a vertical attitude, such that the bale rolls off the fork and onto the trailer. Pivoting the frame to the horizontal attitude automatically opens the fork by the use of a spring. All the bales are unloaded at one time by an unloading mechanism that tilts the trailer such that the bales roll off one side thereof.

REFERENCES:
patent: 2919953 (1960-01-01), Gruhlkey
patent: 3922036 (1975-11-01), Kalsbeck et al.
patent: 3924765 (1975-12-01), Hostetler
patent: 4117940 (1978-10-01), Adam
patent: 4259034 (1981-03-01), Ward et al.
patent: 4261676 (1981-04-01), Balling, Sr.
patent: 4718806 (1988-01-01), Chambers

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