Method of inserting a powder in the manufacture of electrical dr

Details Method of inserting a powder in the manufacture of electrical dr Method of inserting a powder in the manufacture of electrical dr

1979-07-06

1982-04-13

Hall, James R.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

26432811, B28B 124

Patent

active

043247547

ABSTRACT:
A method of inserting a slug of powdery depolarizer material into a can as a step in the manufacture of an electrical dry cell, comprises extruding the material along a passage by a ram, which over the first part of its stroke consolidates the material against the effect of a restriction in the passage and then injects the consolidated material through a nozzle into the container, so as to fill the can in a single stroke of operation, the bottom of the can starting close to the nozzle and then progressively moving away from it at a rate which is directly proportional to that of the ram, under positive control by a cam. The working end of the ram is preferably formed with a recess communicating with the outer surface of the ram by way of one or more bleed holes, which is or are closed just before extrusion starts, whereby a substantially constant volume of material is injected for each stroke of the ram, each bleed hole being in the form of a circumferentially extending slot of which the length can be adjusted by rotation of a slotted outer sleeve. The ram reciprocates in a vertical direction, and a reservoir for powdery material extends horizontally around the mouth of the compression, being fitted with a paddle for sweeping material into the mouth of a compression cylinder prior to each stroke of the ram.

REFERENCES:
patent: 1516632 (1924-11-01), Olaneta
patent: 2654913 (1953-10-01), Maier
patent: 2963738 (1960-12-01), Brandes
patent: 3446882 (1969-05-01), Landon

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