Stone working – Precious stone working
Patent
1979-09-06
1981-03-31
Whitehead, Harold D.
Stone working
Precious stone working
51 59SS, B28D 500
Patent
active
042586909
ABSTRACT:
A machining apparatus comprises a mounting base, a tuning fork secured to the mounting base at the root thereof, a driver associated with the forward end of one of the oscillating legs of the tuning fork for driving the tuning fork so as to cause resonant oscillation of the tuning fork, and a machining member fixed to the forward end of the other oscillating leg of the tuning fork for acting on a workpiece.
REFERENCES:
patent: 1759112 (1930-05-01), Haddow
patent: 2412101 (1946-12-01), Smyers
patent: 3376786 (1968-04-01), Hetzel
Ono Yoshiro
Takahashi Akira
Ono Yoshiro
Whitehead Harold D.
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