Adjustable squeeze point safety device

Details Adjustable squeeze point safety device Adjustable squeeze point safety device

1979-08-27

1981-07-28

Bonck, Rodney H.

192 clutches and power-stop control

Stop mechanism

Safety device

100 53, 192129A, 192129B, B30B 1522

Patent

active

042806100

ABSTRACT:
An improvement is disclosed for a machine of the type having a main drive which may be activated to move a ram with a high force against a workpiece. The improvement is a safety device which includes an apparatus in addition to the main drive for moving the ram to a position near the workpiece with a low force capable of being stopped by contact with a part of the human body. Further apparatus is provided that allows the main drive to become activated only when the ram is within a preselected distance of the workpiece. As a result, the distance can be selected to be smaller than, say, a finger, so that the presence of a finger between the ram and a workpiece will prevent the ram from being driven at a high force.

REFERENCES:
patent: 1309246 (1919-07-01), De Smith
patent: 2337143 (1943-12-01), Yanchenko
patent: 2375707 (1945-05-01), Speller
patent: 2563296 (1951-08-01), White et al.
patent: 2694820 (1954-11-01), Fitzgerald et al.
patent: 3273491 (1966-09-01), Calvert
patent: 3735632 (1973-05-01), Hilton
patent: 3811667 (1974-05-01), Mayer
patent: 4060160 (1977-11-01), Lieber
patent: 4192414 (1980-03-01), Baltschun

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