Chucks or sockets – Radially reciprocating jaws
Patent
1982-08-27
1985-06-25
Briggs, William R.
Chucks or sockets
Radially reciprocating jaws
279113, 279116, 279 1J, B23B 3116
Patent
active
045249830
ABSTRACT:
A lathe chuck is disclosed which includes a plurality of gripping jaws actuated by jaw screws. The screws are rotatably mounted in openings extending radially from the central bore of the chuck. The screws include a central passageway having a spring-biased plunger therein which is adapted to be caused to project from the passageway, across the chuck bore, and into engagement with the passageway of a diametrically opposed jaw screws. With the two jaw screws thus interlocked, they may be rotated together by turning only one jaw screw, thereby moving the opposed, linked gripping jaws in unison an identical distance in one direction. The chuck also includes means for the microadjustment of each jaw position, means for interlocking the movements of selected jaws for simultaneous convergence, and means for immobilizing the gearing means and thereby those jaws then engaged; it provides for repetitive return of the coordinated jaws to a prior position, and automatic centering of round stock.
REFERENCES:
patent: 295229 (1884-03-01), Colton
patent: 295230 (1884-03-01), Colton
patent: 1033547 (1912-07-01), Cornil
patent: 1635481 (1927-07-01), Jorner
patent: 3097860 (1963-07-01), Feldhoff
Briggs William R.
Howell Daniel W.
O'Brien Anthony A.
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