Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1976-01-23
1977-09-06
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
259 81R, B24B 3102
Patent
active
040459187
ABSTRACT:
An abrading and polishing tumbler apparatus in which the tumbler barrel is concurrently rotated and rocked includes an internally ribbed barrel having a separable closure cap at one end with a peripheral friction face and a closed opposite end face provided with a medial longitudinal projection having a pair of transversely spaced first and second longitudinal bores, respectively, concentric with and eccentric to the barrel central axis. A pivot pin is fitted in a selected bore. A support frame carries an upwardly directed raised open topped saddle bearing and a friction wheel is rotatably mounted to the frame below and longitudinally spaced from the saddle bearing. The cap friction surface rests on the friction wheel and the pivot pin rests on a saddle bearing. The friction wheel is rotated by a frame mounted motor to only rotate the barrel when the pivot pin engages the concentric bore and rocks and rotates the barrel when the pivot pin engages the eccentric bore.
REFERENCES:
patent: 401228 (1889-04-01), Tiemann
patent: 1301070 (1919-04-01), Maddox
patent: 2376106 (1945-05-01), Witthofft
patent: 3579921 (1971-05-01), Bobo
patent: 3765131 (1973-10-01), Christensen
Natural Science Industries, Ltd.
Whitehead Harold D.
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