Height adjustable tower mounted pull assembly

Details Height adjustable tower mounted pull assembly Height adjustable tower mounted pull assembly

1982-09-28

1984-10-09

Levy, Stuart S.

Implements or apparatus for applying pushing or pulling force

Portable implements or apparatus for tensioning flexible...

Including expansible chamber fluid motor drive

72447, 72705, 254263, B21D 100, B25B 2500

Patent

active

044757166

ABSTRACT:
An upstanding post is provided having a follower guidingly mounted thereon for adjustable positioning therealong. A pull lever is pivotally supported at one end from the follower for limited oscillation about a horizontal axis transverse to the lever and the lever is disposed in position generally paralleling the post. The other end of the lever is notched for engagement with successive links of a pull chain and an elongated longitudinally extendable thrust member has one end anchored relative to the follower and the other end engaged with the lever at a point spaced from its axis of oscillation for angularly displacing the lever away from the first end of the thrust member. The follower includes anchor structure disposed in the plane of swinging movement of the lever and spaced horizontally from the latter in the direction opposite to the direction in which the thrust member is operative to displace the lever. The anchor structure carried by the follower is operative to engage selective links of the chain and the lever and the end of the thrust member engaged with the lever include coacting structure whereby the thrust member may be engaged with the lever at points spaced longitudinally therealong. The upper end of the post and the follower each include structure for establishing an inclined tension brace extending therebetween and a lower anchor point such as a floor mounted anchor.

REFERENCES:
patent: 3566666 (1971-03-01), Berendt
patent: 3698230 (1972-10-01), Buske
patent: 3796084 (1974-03-01), Jarman
patent: 3893329 (1975-07-01), Roes

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