Trencher apparatus

Details Trencher apparatus Trencher apparatus

1987-03-24

1990-01-30

Wiecking, David A.

Excavating

Peat excavators

180242, E02F 506

Patent

active

048964425

ABSTRACT:
A trencher comprising a digger located adjacent the rearward wheels, which pair of wheels are driven hydraulically and which have an open area between them into which the digger may be partially positioned. The forward wheels of the trencher are steerable by use of a self-locking angular adjustment mechanism. A hydraulic circuit which includes a pressure relief valve provides substantially constant pressure on the chain of the digger. A locking mechanism is provided for the forward wheels when initiating the cutting action of the digger.

REFERENCES:
patent: 2771958 (1956-11-01), Ball
patent: 3620333 (1971-11-01), Menzi
patent: 3880251 (1975-04-01), Clevanger, Jr. et al.
patent: 4034490 (1977-07-01), Teach

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