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
041757343
ABSTRACT:
A device for aligning and clamping in position a pair of plates in side by side coplanar relationship, with adjacent edges of the plates closely spaced from one another, in order that the plates may be joined along their edges, is characterized by a lower plate clamp extendable through the space between adjacent edges of the plates and under the plates into engagement with lower surfaces thereof for aligning the lower surfaces in coplanar relationship, and an upper plate clamp movable into engagement with upper surfaces of the plates for gripping the plates between the clamps. When held by the device the plates are in position to be joined along their edges, whereafter the device may be removed from the plates through the space therebetween.
REFERENCES:
patent: 2487022 (1949-11-01), La Placa
patent: 3159393 (1964-12-01), Villano
patent: 3875645 (1975-04-01), Tucker et al.
patent: 4076228 (1978-02-01), Sheldon
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