Chain guide apparatus for a pipe vise

Details Chain guide apparatus for a pipe vise Chain guide apparatus for a pipe vise

1990-10-09

1992-08-04

Watson, Robert C.

Work holders

Relatively movable jaws

Including constrictable loop jaw

B25B 104

Patent

active

051352087

ABSTRACT:
An improved chain-type pipe vise system. The vise includes a base member, at least two V-shaped vise members, and a chain having one end attached to the base member. The other end is designed to wrap around a pipe, and extends downwardly beneath the base member to an attachment assembly. To engage the unattached end of the chain within the attachment assembly, a chain guide unit is mounted to the vise beneath the base member. The unit includes a tubular member having a rod slidably mounted therein. The rod includes an outwardly-extending section which is movable along a slot through the tubular member, and biasing means for pulling the section inwardly. In operation, the outwardly-extending section is drawn back and released. This enables the section to move inwardly, engaging the unattached end of the chain and urging it into the attachment assembly.

REFERENCES:
patent: 406935 (1889-07-01), Murphy
patent: 1365892 (1921-01-01), Craver
patent: 1636880 (1927-07-01), Tucker et al.
patent: 2648242 (1953-08-01), Walter
patent: 2952282 (1960-09-01), McHenry
patent: 3379431 (1965-10-01), Gill
patent: 3480270 (1965-11-01), Gill
Pages 24-25 from Ridgid Tool Co. Catalog No. RT-580, Nov. 1989.

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