One man operated, twin wheel mounted powered earth drill

Tool driving or impacting – With indicating or signaling means

Patent

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Details

173163, E21C 1102

Patent

active

040774805

ABSTRACT:
Quarter inch plate steel forms the bottom, front and rear walls of a U-shaped open sided saddle for mounting therewithin a 9 H.P. four cycle gasoline engine, the bottom of said saddle being clamped along its front edge to a 30 inch fixed axle on opposite ends of which are freely rotatable 14 inch diameter ballon tired wheels. Rectangularly rigidly connected to upper ends of said spaced rear and front engine saddle walls and continuing 46 inches forwardly therefrom is an inverted 4 inch square U-cross section sheet metal channel providing a drill supporting tongue for the tool while also housing a main shaft, the rear end of which journals in a self-aligning bearing fixed rockably on said rear engine saddle wall. Behind said wall said main shaft has a driven pulley fixed thereon which is belt driven from an engine shaft drive pulley when a manually controlled idler roller clutch means tightens the connecting belt.
Rockably mounted on a transverse axis on the front end of said inverted channel shaft housing is a worm gear box, the short horizontal input shaft of which connects through a universal spline joint with the front end of said main shaft. The short vertical downward output shaft of said gear box is squared for readily connecting the same to an earth drill of selected length and diameter.
A pair of handle bars equipped respectively with clutch and throttle controls is also mounted on the top of a front portion of said shaft housing. These bars are readily shiftable to any one of three optional positions for the convenience of the operator in various phases of earth drilling with the invention.

REFERENCES:
patent: 2576199 (1951-11-01), Vogel
patent: 2604304 (1952-07-01), Wilson
patent: 2673452 (1954-03-01), Glaze
patent: 2815049 (1957-12-01), Herscovitch
patent: 3232168 (1966-02-01), Manberg et al.
patent: 3604521 (1971-09-01), Collins
patent: 3731751 (1973-05-01), Rusco
patent: 3976147 (1976-08-01), Cunningham

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