Work holders – Holder inserted within work aperture – Inserted holder movable relative to work backup
Patent
1978-06-23
1979-11-27
Watson, Robert C.
Work holders
Holder inserted within work aperture
Inserted holder movable relative to work backup
B25B 514
Patent
active
041757351
ABSTRACT:
A device for holding a pair of metal pipes, in order that the pipes may be joined end to end, clamps the pipes in coaxial relationship with adjacent ends thereof in close proximity with one another. The device is adjustable to accommodate pipes of differing outer diameters, and holds the pipes in aligned relationship for initially being joined at one or more points around their juncture. After the pipes have initially been joined, the device is then removable from the pipes to permit the same to be joined completely around their juncture.
REFERENCES:
patent: 3159393 (1964-12-01), Villano
patent: 3875645 (1975-04-01), Tucker et al.
patent: 4076228 (1978-02-01), Sheldon
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