Work holders – Plural holders to hold workpieces relative to each other – Workpieces parallel to each other
Patent
1993-06-25
1994-08-23
Watson, Robert C.
Work holders
Plural holders to hold workpieces relative to each other
Workpieces parallel to each other
269242, 269905, E04F 2104, B23Q 315
Patent
active
053400950
ABSTRACT:
The present invention L elates to a door buck spreader having the capability to support and transport a door buck, or door frame, from its time of construction to its time of final installation. This spreader is a self-contained unit that does not require any additional support members or apparatus. The spreader is capable of setting standard size door and window bucks to bucks as large as eight feet across. The present invention is capable of precise adjustment due to the intel action between a threaded core member and two elongated tubular elements that each engage the core in one end and are rigidly attached to frame mounts at the other ends thereof. The present invention is further capable of adapting to most any door buck by means of longitudinally and laterally displaceable spacer elements and securing such door bucks to the spreader itself by means of a frame clamp assembly.
REFERENCES:
patent: 751050 (1904-02-01), Bronk
patent: 2881813 (1959-04-01), Lacoste
patent: 3168305 (1965-02-01), Lee
patent: 3199206 (1965-08-01), Snapp
patent: 3851868 (1974-12-01), Lagasse
Litman Richard C.
Watson Robert C.
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