Hacksaw with improved blade tension mechanism

Details Hacksaw with improved blade tension mechanism Hacksaw with improved blade tension mechanism

1996-08-12

1998-06-23

Payer, Hwei-Siu

Cutlery

Cutting tools

Saw

30506, B27B 2102

Patent

active

057687889

ABSTRACT:
A hacksaw includes a blade tensioning mechanism attached to the lower portion of the handle and connected to the blade through a blade holder. The end of the blade holder is observed via a tension indicator window at the lower portion of the handle, and the handle has respective predetermined indicia adjacent to the tension indicator window for alignment with the end of the blade holder. The blade tension mechanism includes an adjusting screw threadingly engaging the blade holder, and a crank handle mechanically engaging the adjusting screw for adjusting the tension of the blade. At the desired blade tensioning, the crank handle is mechanically disconnected from the adjusting screw and fits closely in the recess underneath the lower portion of the handle.

REFERENCES:
patent: 2516079 (1950-07-01), Shortell
patent: 2606585 (1952-08-01), Collura
patent: 3636997 (1972-01-01), Keymer
patent: 3822731 (1974-07-01), Keymer
patent: 4256156 (1981-03-01), Biszantz et al.
patent: 4349059 (1982-09-01), Hepworth et al.
patent: 4367779 (1983-01-01), Ewig
patent: 4571829 (1986-02-01), Withers, Jr.
patent: 5388333 (1995-02-01), Chen
patent: 5471752 (1995-12-01), Koetsch

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