Lapidary machine

Details Lapidary machine Lapidary machine

1977-03-01

1978-04-18

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51216LP, 51229, B24B 1702

Patent

active

040843521

ABSTRACT:
A lapidary machine having a fluid-actuated chuck arranged for facilitating insertion into and removal from the chuck of a dopstick provided with a shank of substantially square cross section. By this arrangement, dopsticks can be easily changed and quickly indexed relative to the associated guide in order to decrease set-up time of the machine while assuring proper orientation of a gemstone with respect to the guide. The machine is also provided with a dashpot connected to the frame of the device and to the chuck, which is mounted for swinging movement of the frame, for preventing rapid movement of the chuck relative to an associated grinding wheel which could damage a stone being profiled.

REFERENCES:
patent: 1998642 (1935-04-01), Smith
patent: 2413678 (1947-01-01), Beverlin
patent: 2450742 (1948-10-01), Stevens
patent: 3520091 (1970-07-01), Raphael
patent: 3673742 (1972-07-01), Colbauga
patent: 3834085 (1974-09-01), Moeller
patent: 3844070 (1974-10-01), Reed

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