Work holders – Relatively movable jaws – Means to actuate jaw
Patent
1978-05-08
1981-01-20
Watson, Robert C.
Work holders
Relatively movable jaws
Means to actuate jaw
269303, 269910, B23Q 300
Patent
active
042458285
ABSTRACT:
An apparatus for fabricating, assembling and erecting the frame for a steel building, in which the frame is made up of a set of modular truss units which are joined together at the building site. The individual components of each truss unit are fabricated at a central location and are then shipped to an assembly location near the building site. At the assembly location, the components are welded together, prior to shipment to the building site, by use of special welding jigs.
REFERENCES:
patent: 2129133 (1938-09-01), Iben
patent: 3238867 (1966-03-01), Jureit et al.
patent: 3332679 (1967-07-01), Junk
patent: 3933348 (1976-01-01), Tidwell
patent: 3945630 (1976-03-01), Brunemann
Aldag John
Wells Willis L.
Blackhawk Systems, Inc.
Watson Robert C.
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