Earth working – Scraper between front and rear ground supports of vehicle – Specific actuator between frame and scraper
Patent
1976-06-14
1977-07-26
Stouffer, Richard T.
Earth working
Scraper between front and rear ground supports of vehicle
Specific actuator between frame and scraper
92118, 172305, 172476, 172667, 172673, 172741, 188 41, E02F 376, A01B 6502
Patent
active
040376702
ABSTRACT:
An improved blade clamping mechanism for a motor grader blade which has blade support rails carried in pivoted blade support means for lateral sliding movement, and in which confining surfaces in the blade support means restrict both vertical and fore-and-aft movement of the rails in the support means. A clamp lever is pivoted on the circle of the motor grader and has a clamp arm which can be turned in a vertical plane against the bottom of the lower support rail with a high mechanical advantage to force the rail against an overlying confining surface; and a single action hydraulic cylinder and piston unit which turns the lever simultaneously presses a clamp shoe against the rear of the upper support rail. The clamps are normally locked by hydraulic pressure on the piston, and released by moving a manually controlled valve to a drain position so that a return spring acting on the clamp shoe can move the shoe and the lever to a release position.
REFERENCES:
patent: 2258890 (1941-10-01), Gustafson
patent: 3593806 (1971-07-01), Gurries
patent: 3699851 (1972-10-01), Kennedy
patent: 3877349 (1975-04-01), Schindel
patent: 3891065 (1975-06-01), Iijima et al.
patent: 3945300 (1976-03-01), Bourges
patent: 3983945 (1976-10-01), Hart et al.
Atherton Robert Allan
Cole Carroll Richard
Caterpillar Tractor Co.
Stouffer Richard T.
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