Hacksaw with improved blade-tensioning mechanism

Details Hacksaw with improved blade-tensioning mechanism Hacksaw with improved blade-tensioning mechanism

1983-07-07

1984-08-21

Schmidt, Frederick R.

Bridges

145 33R, B23D 4912

Patent

active

044664710

ABSTRACT:
A hacksaw with an improved mechanism for adjusting the tension on the blade. The mechanism includes a lever for vertically moving a rod to pivot a rocker arm to place tension on the rocker arm-held blade. The rod has a manually rotatable cross-member provided at its lower end. The rocker arm has a transversely extending seating groove provided on the lower surface of its rear portion to receive the cross-member and to retain it therein against rotational movement. The cross-member is rotatable by the user to provide a positive and replicable blade-tensioning means which is free from infinite adjustment-caused creep.

REFERENCES:
patent: 579492 (1897-03-01), Morrell
patent: 2194494 (1940-03-01), Carroll
patent: 2796098 (1957-06-01), Dreier
patent: 4256156 (1981-03-01), Biszantz et al.
patent: 4367779 (1983-01-01), Ewig

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