Adjustable quick change jaw apparatus

Chucks or sockets – Radially reciprocating jaws – Jaws

Patent

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Details

279111, 279153, B23B 3116

Patent

active

058459120

ABSTRACT:
An adjustable quick change chuck jaw apparatus for attachment to a master jaw in the front face of a rotary chuck allows a machinist to quickly change the chuck jaws from one diameter to another. A generally rectangular jaw body is connected to the master jaw of a rotary chuck and extends radially outward from the central rotational axis of the chuck. A jaw member is slidably mounted on one side of the jaw body to travel longitudinally relative thereto and has a workpiece gripping portion extending perpendicularly outward. A rotatable shaft mounted in the jaw body has a threaded segment configured to become engaged with mating threads on the jaw member when rotated to an engaged position and to become disengaged therefrom when rotated to a disengaged position. A spring biased locking pin in the jaw body allows selective engagement with the shaft to prevent rotation thereof in a locked position and to become disengaged therefrom to allow rotation in an unlocked position. Upon depressing the locking pin, the shaft may be rotated to its disengaged position wherein the jaw member may be manually removed from the jaw body or moved thereon relative to the workpiece and accurately adjusted to grip the workpiece. Upon releasing the locking pin, the shaft is prevented from rotating and the jaw member is maintained in the adjusted position.

REFERENCES:
patent: 1253224 (1918-01-01), Fisher
patent: 1263058 (1918-04-01), Griffith
patent: 1503804 (1924-08-01), Phillips
patent: 4200300 (1980-04-01), Rohm
patent: 4946176 (1990-08-01), Hillenburg
patent: 5199725 (1993-04-01), Jaggers

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