Shears for sheet metal cutting

Details Shears for sheet metal cutting Shears for sheet metal cutting

1980-06-11

1982-10-26

Meister, James M.

Cutting

Means to drive or to guide tool

Constantly urged tool or tool support

83590, 83628, B26D 510, B26D 516

Patent

active

043555586

ABSTRACT:
The invention relates to a pair of shears for shearing sheet metal. Known shears, for example power shears, require relatively great forces, which cannot be produced except by special gear means. For rendering it possible to manually shear even relatively thick sheets, according to the invention it is proposed that the movable blade (22) of the shears is connected to a drive mechanism (13,15,17) and is located above the stationary blade (6) of the shears in its starting position for shearing, and that the drive mechanism is supported in the stand (1) of the shears for vertical movement, whereby the dead load of the drive mechanism and of the movable blade is utilized by gravity action for the shearing work.

REFERENCES:
patent: 58778 (1866-10-01), Conarroe
patent: 115493 (1871-05-01), May
patent: 304829 (1884-09-01), Knapp
patent: 344074 (1888-06-01), Bayrer
patent: 540013 (1895-05-01), Alexander
patent: 592564 (1897-10-01), Greenleaf
patent: 655267 (1900-08-01), Obermeyer
patent: 763804 (1904-06-01), Seiberling et al.
patent: 836700 (1906-11-01), Oldenburg
patent: 1722819 (1929-07-01), Munschauer

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