Propulsion apparatus

Details Propulsion apparatus Propulsion apparatus

1989-12-13

1992-05-19

Taylor, Dennis L.

Excavating

Peat excavators

37 83, 37191A, 37195, E02F 506

Patent

active

051136090

ABSTRACT:
A propulsion apparatus is disclosed for urging a trenching arm forward against the advancing face of an elongate trench being dug by the trenching arm. The propulsion apparatus includes a propulsion member which is engageable with the base wall of the trench such that the trench arm may be urged forward relative to the engaged propulsion member. The propulsion member may then be withdrawn from engagement with the base wall and retracted towards the trenching arm before commencing a further propulsion cycle. The propulsion member is also operable to cooperate with the trenching arm in excavating a starting slot at the beginning of a new trench.

REFERENCES:
patent: 1850363 (1932-03-01), Vaughn
patent: 2310233 (1943-02-01), Harrington
patent: 3785071 (1974-01-01), Schaeff
patent: 3951459 (1976-04-01), Honeycutt, Jr.
patent: 4681483 (1987-07-01), Camilleri
patent: 4843742 (1989-07-01), Camilleri

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