Spring-loaded clamp for an earth-working tool shank

Details Spring-loaded clamp for an earth-working tool shank Spring-loaded clamp for an earth-working tool shank

A - Human Necessities

01

B

97/76

A01B 61/04 (2006.01) A01B 35/22 (2006.01)

Patent

CA 1069748

SPRING-LOADED CLAMP FOR AN EARTH-WORKING TOOL SHANK ABSTRACT OF THE DISCLOSURE The upper end of a shank of an earth-working tool is secured to a frame or tool bar by a spring-loaded clamping arrangement which includes replaceable pin and bushing compo- nents in the pivot connection between the shank and a clamping member secured to the tool bar. Spring loading is provided by a compression coil spring through which a connecting tension rod extends. A relatively hard plastic sleeve is pressed onto the tension rod and serves to keep the coils of the spring in alignment during earth-working operations. The bushing com- ponent of the pivot connection is axially split with circum- ferentially spaced surfaces separated sufficiently from one another to permit locking tabs to be disposed therebetween. The bushing fits in aligned bores in a rockable member secured to the upper end of the shank and the tabs extend from the rockable member into the area between the circumferentially spaced surfaces of the split bushing. The pin extends through the bushing and is nonrotatably connected to the clamping member secured to the tool bar.

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