Hand-operated injection molding machine

Details Hand-operated injection molding machine Hand-operated injection molding machine

1977-11-14

1979-10-30

Briggs, William R.

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

425575, B29F 108

Patent

active

041727002

ABSTRACT:
A heating cylinder with a chamber therein is mounted on a base and has a discharge nozzle with an orifice therein, a plunger being movable into the chamber toward the discharge nozzle. A mold holder is supported on the base and has a mold including first and second mold members which jointly provide a mold cavity therebetween. The mold holder is pivotable between a first position in which the mold is held in contact with the discharge nozzle with a sprue in one of the mold members being held in communication with the orifice and a second position in which the mold is located away from the discharge nozzle. There is a means on the base for locking the mold holder in the first position.

REFERENCES:
patent: 1922937 (1933-08-01), Eckert
patent: 2253822 (1941-08-01), Sundback
patent: 3117347 (1964-01-01), Barton
patent: 3574897 (1971-04-01), Citron et al.
patent: 3590749 (1971-07-01), Burns et al.
patent: 3608149 (1971-09-01), Morgan
patent: 3892510 (1975-07-01), Meth et al.

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