Material feed control method and apparatus for a wood or brush c

Details Material feed control method and apparatus for a wood or brush c Material feed control method and apparatus for a wood or brush c

1990-06-05

1992-02-18

Bray, W. Donald

Woodworking

Process

Including monitoring of operation

144176, 144246R, 144246G, 144369, 198624, 1986263, 1988611, 2411017, 241222, B27C 100, B27B 100

Patent

active

050885324

ABSTRACT:
A method and mechanism for controlling the material feed of a machine for chipping wood or brush. The machine has a pair of coacting feed rolls which feed material to be chipped into a rotating chipper that is driven by an engine of variable speed. Hydraulic motors for driving each of the feed rolls are actuated when the speed of the engine is at least a selected high level appropriate for efficient chipping. If the material is of a size or composition to load the engine below a selected low level adverse to efficient chipping, the hydraulic motors are interrupted to stop feeding of the material to allow the engine to return to an efficient chipping speed. When the engine has recovered to at least the selected high level, the hydraulic motors are reactivated to again feed material into the chipper.

REFERENCES:
patent: 3524485 (1970-08-01), Smith
patent: 4534390 (1985-08-01), Morey et al.
patent: 4598745 (1986-07-01), Parviainen
patent: 4865094 (1989-09-01), Stroud et al.

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