Adjusting screw retainer

Details Adjusting screw retainer Adjusting screw retainer

1987-05-26

1988-02-09

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Miscellaneous

182179, 16 19, 16 30, E04G 502, E04G 124

Patent

active

047236337

ABSTRACT:
An apparatus for securing an adjusting screw having a nut thereon to an hollow leg of a scaffolding frame to prevent loss of the adjusting screw when the scaffolding frame is tilted or raised. The apparatus includes a swivel that allows turning of the handle nut while the adjusting screw remains secured to the leg of the scaffolding frame.

REFERENCES:
patent: 1247827 (1917-11-01), Hansen
patent: 2010299 (1935-08-01), Gray
patent: 2339577 (1944-01-01), Nalle
patent: 2618496 (1952-11-01), Johnson
patent: 3566991 (1971-03-01), Proulx
patent: 3742662 (1973-07-01), Ballou
patent: 3964575 (1976-06-01), Gostling
patent: 4263984 (1981-04-01), Masuda

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