Metal deforming – By deflecting successively-presented portions of work during... – By use of work-contacting wiper and moving – work-holding form
Patent
1989-07-07
1991-01-22
Combs, E. Michael
Metal deforming
By deflecting successively-presented portions of work during...
By use of work-contacting wiper and moving, work-holding form
72149, B21D 704
Patent
active
049861042
ABSTRACT:
Portable manually or motor-controlled pipe-bending minimachine which, in spite of its small size as compared with similar machines, is easier and handier to operate on site for the bending of pipes ranging 4 mm to 22 mm in diameter. The minimachine is provided with a reverse gear (53) and an intermediary device (50) built in the minimachine main body (11) which allows the engagement and automatic disengagement of the gear drive (40) transmitting rotary motion to the matrix-carrying shaft. Both the motor (90) and the manual control lever assembly (60) allowing alternate control of consecutive angular movements of matrix (16), can be easily and quickly mounted on the main body; and the countermatrix (24) is an interchangeable device to be mounted on a special support (20) allowing it to be appropriately positioned at the start of a bending operation.
REFERENCES:
patent: 1272999 (1918-07-01), Rehbein
patent: 1309238 (1919-07-01), Brinkman
patent: 2822023 (1958-02-01), Ahern
patent: 3236082 (1966-02-01), Beck et al.
patent: 3285048 (1966-11-01), Eskilson
patent: 3785190 (1974-01-01), Schall et al.
patent: 4532787 (1985-08-01), Caporusso et al.
Caporusso Alessandro
Caporusso Mario
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