Scaffold latch means

Details Scaffold latch means Scaffold latch means

1987-12-21

1988-12-27

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Safety device, platform associated

182187, 182179, 182118, 292173, 29216914, E04G 120

Patent

active

047934387

ABSTRACT:
A safety device from a scaffold latch, providing a movable abutment arm which is supported to have two positions, a first position providing a blocking abutment which blocks latch-releasing withdrawal movement of the latch pin, and a second position in which it permits such latch-release movement of the latch pin, the abutment arm being co-operative with the release lever of the latch assembly to cause its movement to its second position automatically as the latch release lever is being actuated; and a spring automatically holds the safety's abutment arm in its first (pin-blocking) position unless the pin-release lever is being actuated.

REFERENCES:
patent: 3396817 (1968-08-01), Perry
patent: 4159838 (1979-07-01), Wilzig et al.

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