Tool holder for a mining tool bit and method for making same

Details Tool holder for a mining tool bit and method for making same Tool holder for a mining tool bit and method for making same

1980-10-29

1984-12-04

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

With metal deformation of different type

72 69, 72377, 175354, B21K 501

Patent

active

044856555

ABSTRACT:
A tool holder for a mining tool bit is disclosed; it comprises a unitary steel body with a cylindrical shank for supporting the tool holder and a conical head for holding a tool bit. The shank includes a retaining neck constructed of a roll-formed portion of the shank. A cylindrical section between the shank and the head includes an extracting neck which is constructed of a roll-formed portion of the section.

REFERENCES:
patent: 1493836 (1924-05-01), Wurster
patent: 2141753 (1938-12-01), Hufferd et al.
patent: 3528271 (1970-09-01), DiPonio
patent: 3712099 (1973-01-01), Elsbett et al.
patent: 3720273 (1973-03-01), McHenry et al.
patent: 4245846 (1981-01-01), Andrews

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