Ring making apparatus

Details Ring making apparatus Ring making apparatus

1987-06-11

1988-12-06

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

Female mold and opposed coaxial dynamic press members

291566, 425138, 425353, 425DIG42, B29C 4334

Patent

active

047893230

ABSTRACT:
Apparatus for forming graphite into packing rings utilizes a press to compress the graphite within a movable die. The graphite is supplied to the press by the combination of a turntable-type feeder and a tubular feeder which places increments of the graphite in dies carried by the turntable. The punch has a retractable pin which cooperates with a lower core pin to maintain the interior diameter of the rings as they are formed. The press and turntable are connected for synchronous operation.

REFERENCES:
patent: 2319373 (1943-05-01), Tormyn
patent: 2468797 (1949-05-01), Wong
patent: 2994106 (1961-08-01), Posey
patent: 3220092 (1965-11-01), Wolfe et al.
patent: 3244782 (1966-04-01), Eyberger
patent: 3507009 (1970-04-01), Comly
patent: 3647332 (1972-03-01), Schmaus
patent: 3677673 (1972-07-01), Shapiro
patent: 4080128 (1978-03-01), Schreiner et al.
patent: 4104014 (1978-08-01), Pearce
patent: 4345889 (1982-08-01), Sizemore et al.
Hawley, G. G.; The Condensed Chemical Dictionary; 8th Edition; Reinhold Co.; p. 426; 1971.

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