4-jaw work holding chucks

Details 4-jaw work holding chucks 4-jaw work holding chucks

B - Operations, Transporting

23

B

29/24

B23B 31/00 (2006.01) B23B 31/16 (2006.01) B23Q 3/00 (2006.01)

Patent

CA 1069287

ABSTRACT OF THE DISCLOSURE A 4-jaw work holding chuck the jaws of which are adjustable in oppositely disposed pairs, each pair of jaws being adjustable towards or away from each other simulta- neously by a respective one of a pair of adjusting screws. A sleeve is located on at least one end of at least one of the adjusting screws between that screw and the asso- ciated jaw. The sleeve is internally screw threaded so as to engage the screw thread at the aforementioned end of its associated screw. The sleeve is externally screw threaded to engage the associated jaw, so that rotation of the sleeve provides a differential adjustment of its asso- ciated jaw relative to the opposite jaw independent of the adjusting screw.

287900

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