Machine for forming a Bismarck chain

Details Machine for forming a Bismarck chain Machine for forming a Bismarck chain

1976-05-27

1977-09-13

Larson, Lowell A.

Chain, staple, and horseshoe making

Chain making

Combined machines

B21L 700

Patent

active

040473783

ABSTRACT:
A machine for forming a Bismarck chain has first and second wire twisting heads alternately feeding and turning two wire helices disposed at an angle of about 90.degree. to each other. The first head adds a first helix of wire as a new link to the last link of the chain, and the second head adds a second helix of wire as a new link to the first helix. The first and second helices are cut after their formation. Thereafter, the chain is pulled upwardly away from the wire twisting heads a distance of two chain lengths. The last length in the chain is held above the wire twisting heads as the wire twisting heads feed and turn two new wire helices.

REFERENCES:
patent: 1100098 (1914-06-01), Richter

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