Safety devices for mechanically operated apparatus such as a...

Details Safety devices for mechanically operated apparatus such as a... Safety devices for mechanically operated apparatus such as a...

B - Operations, Transporting

26

F

164/141

B26F 1/02 (2006.01) B21D 55/00 (2006.01) B26D 7/22 (2006.01) B30B 15/28 (2006.01)

Patent

CA 1101782

Abstract of the Disclosure A safety device for mechanically-operated apparatus, such as a flywheel-driven punch press, consists of a hook- providing coupling member for mounting on the press crank shaft, and a cooperating coupling member for connection to the apparatus body via a power-absorbing member. The coupling members rest in the coupled position and are moved momentarily to the uncoupled position upon initiation of an operation by the operator. If therefore the movable member of the press continues to move after the normal termination of the cycle the coupled members connect the movable member to the power-absorbing member so that the movable member is brought to a stop before the press die parts can close. The power-absorbing member preferably is a hydraulic piston and cylinder device connected between one coupling member and the press body, the liquid in the cylinder interior becoming pressurised and discharging via a pre-set relief valve when the device is operative.

305480

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