Carriage feed system

Details Carriage feed system Carriage feed system

1982-10-18

1985-03-12

Yost, Frank T.

Tool driving or impacting

Advance causing or controlling means

Driven flexible member causes advance

173152, E21B 1500, E21C 506

Patent

active

045039178

ABSTRACT:
An improved drill feeding mechanism for a rock and earth drilling machine is disclosed wherein substantially all the loading forces due to the drilling and extracting operations are directed away from the upper portion of the tower. This is accomplished in the preferred embodiment by having a hydraulically displaced carriage guidingly supported for linear translation along a drill tower. Cable reeving about the carriage is anchored at a mid point on the tower and reversably displaces a guided drilling head at twice the linear velocity of the carriage and in the same direction. A hydraulic cylinder is attached at the tower base and activates the carriage.

REFERENCES:
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patent: 2976942 (1961-03-01), Pitcher
patent: 3149540 (1964-09-01), Lindgren et al.
patent: 3288229 (1966-11-01), Chappuis
patent: 3535985 (1970-10-01), Attebo
patent: 3642075 (1972-02-01), Wills
patent: 3659655 (1972-05-01), Gyongyosi
patent: 3692123 (1972-09-01), Gyongyosi
patent: 3835940 (1974-09-01), Winter, Jr.
patent: 3867989 (1975-02-01), Hisey et al.
patent: 3986564 (1976-10-01), Bender
patent: 4258796 (1981-03-01), Horning et al.

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