Glassworking scroll chuck with interchangeable jaws

Details Glassworking scroll chuck with interchangeable jaws Glassworking scroll chuck with interchangeable jaws

1986-06-20

1987-09-15

Godici, Nicholas P.

Turning

Severing or cut-off

Automatic and/or triggered control

279 1DA, 279 1DC, 279114, 279117, 279123, B23B 3102

Patent

active

046931481

ABSTRACT:
This invention provides a chuck for a glassworking lathe which includes a chuck body rotatable with a drive spindle nose about a longitudinal axis and a handwheel rotatable about the same longitudinal axis. A locking device is provided for releasably locking the handwheel to the chuck body for unitary rotation of the handwheel with the chuck body. A spiral gear or scroll is fixed to the handwheel to define a radially extending path of spiral movement relative to a longitudinal axis upon rotation of the spiral gear. A plurality of jaw base members include spiral gear grooves for meshingly engaging the spiral gear, are angularly spaced about the axis and are movable radially with respect to the axis upon rotation of the spiral gear engaging the gear grooves formed in the bottom of each of the jaw base members. Each jaw base member is adapted for optional complemental mating the a corresponding jaw outer member or with a planetary beam assembly thereby permitting the chuck to be configured as a scroll chuck or as a planetary chuck, at the option of the user.

REFERENCES:
patent: 2429524 (1947-10-01), Oetzel
patent: 2523374 (1950-09-01), Jensen
patent: 2796313 (1957-06-01), Schumacher
patent: 3612254 (1971-10-01), Wideman
FUSION Magazine Feb., 1986, pp. 19, 35, 64 American Scientific Glassblowers Society; Toledo, Ohio.

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