Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Clamp structure constitutes sole initial metal-deforming...
Patent
1984-11-09
1987-03-24
Crane, Daniel C.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
Clamp structure constitutes sole initial metal-deforming...
269236, 269239, 74571R, B21D 504
Patent
active
046515534
ABSTRACT:
A sheet bending brake comprising a plurality of C-shaped frame members that support a first member. The first member has a clamping surface. A second member is hinged to the first member and has a bending surface. A plurality of bars are pivoted to the frame members and support an anvil member that extends longitudinally of the first member. A cam support shaft is rotatably mounted on the frame members and a plurality of eccentric cams are secured on the shaft. Each bar is generally C-shaped and a cam is positioned between the upper and lower flanges thereof. A handle is secured to the shaft such that when the handle is operated, the eccentric cams are rotated to move the bars and, in turn, the anvil member into and out of clamping position. The shaft and eccentric cams are provided with circumferentially spaced teeth extending axially so that the cams are locked in any adjusted position. The position of a cam can be adjusted by moving the cam axially relative to the shaft to disengage the teeth on the cam from the teeth on the shaft, rotating the cam to the desired adjusted position and moving the cam axially to reengage the teeth.
REFERENCES:
patent: 2217378 (1940-10-01), Nilsby
patent: 2271041 (1942-01-01), Stuckert
patent: 2322291 (1943-06-01), Gearing
patent: 2387102 (1945-10-01), Wallis
patent: 2602358 (1952-07-01), Lile
patent: 2788687 (1957-04-01), Ridge
patent: 2925109 (1960-02-01), Walker
patent: 3008347 (1961-11-01), Perkins, Jr. et al.
patent: 3129938 (1964-04-01), Riley
patent: 3161223 (1964-12-01), Marsh
patent: 3402621 (1968-09-01), Johnson et al.
patent: 3482427 (1969-12-01), Barnack
patent: 3559444 (1971-02-01), Blazey et al.
patent: 3817075 (1974-06-01), Marsh et al.
patent: 4081986 (1978-04-01), Break
patent: 4092841 (1978-06-01), Chambers, Jr.
patent: 4237716 (1980-12-01), Onisko
patent: 4240279 (1980-12-01), Rhoades
patent: 4364254 (1982-12-01), Chubb et al.
Crane Daniel C.
Tapco Products Company Inc.
LandOfFree
Portable sheet bending brake does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Portable sheet bending brake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable sheet bending brake will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1346618