Adaptor for earth working cutting teeth and holding clamp

Details Adaptor for earth working cutting teeth and holding clamp Adaptor for earth working cutting teeth and holding clamp

1990-12-21

1992-09-22

Taylor, Dennis L.

Excavating

Ditch filler

37142R, 299 91, E02F 928

Patent

active

051486164

ABSTRACT:
An adaptor enables conventional earth working machinery to use boltless holding clamps for cutting teeth made from bar stock material. One end of the adapter has a shank engagement end which couples a digging or cutting member of the machine while the other receiving end is adapted to receive the boltless holding clamp and the cutting tooth in wedge-tightened clamping engagement. The shank engagement end may employ bolts, dowels, pins or may be welded to the digging or cutting member, e.g., a bucket, blade, scarifier shank, shovel, etc. The clamp receiving end has wedge-locking grooves which interlock with complementary locking flanges of the clamp and a flat bearing surface which frictionally bears against the cutting tooth when clamped. Frictional properties at the interface between the adaptor bearing surface and the tooth differ from frictional properties at the clamp-to-tooth interface in a manner to provide self-tightening in response to axial impact loads on the tooth. The adaptor also includes clamp guards to prevent loosening of the clamp during back-up movements.

REFERENCES:
patent: 2729902 (1956-01-01), Launder
patent: 3496657 (1970-02-01), Sturgeon
patent: 3678605 (1972-07-01), Prime
patent: 4187035 (1980-02-01), Colburn
patent: 4282665 (1981-08-01), Fletcher et al.
patent: 4343516 (1982-08-01), Aden
patent: 4712321 (1987-12-01), Berchem et al.
patent: 4899830 (1990-02-01), Maguina-Larco
patent: 5027535 (1991-07-01), Maguina-Larco
Kennametal, Checking Cutter Bits, Bit Holders and Flighting, date unknown.

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