Severing by tearing or breaking – Breaking or tearing apparatus – Including means to apply thermal shock to work
Patent
1983-04-15
1985-08-27
Schmidt, Frederick R.
Severing by tearing or breaking
Breaking or tearing apparatus
Including means to apply thermal shock to work
81355, 81387, 81422, 81425R, B25B 700
Patent
active
045370990
ABSTRACT:
A combination tensioning and braking tool providing an improved mechanical means for removing interior portions from plates of plate vitreous material, such as glass. The tool includes a spring-loaded handle and a pair of cooperating jaws, both of which contain a movable head. The tool may be used for opening or running scored lines between holes which are drilled through the sheet by allowing pressure to be alternately applied to the same side of the scored line for the run and then pressure to the opposite side of the scored line for reverse runs. The tool may also be used for braking a cut when the pressure applying surfaces of the head means are in a nonworking position.
REFERENCES:
patent: 316430 (1885-04-01), Derby
patent: 491222 (1893-02-01), Pellet
patent: 1625064 (1927-04-01), Vello
patent: 2082669 (1937-06-01), Voigt
patent: 2736218 (1956-02-01), Atkeson
patent: 2853907 (1958-09-01), Bakke
patent: 2938414 (1960-05-01), Blomme
patent: 4090420 (1978-05-01), Insolio
Axelrod Lester
Oster Stanley M.
Malin Eugene F.
Meislin Debra S.
Schmidt Frederick R.
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