Volume control mechanism for a bell assembly

Details Volume control mechanism for a bell assembly Volume control mechanism for a bell assembly

1980-07-07

1982-06-29

Pitts, Harold I.

Communications: electrical

Audible indication

Pneumatic-type sound producer

116149, 340392, 340401, 340403, G10K 1063

Patent

active

043374611

ABSTRACT:
An indexing mechanism for the volume control of a telephone bell comprises a slot and associated indexing notches which co-operate with a guide pin and an indexing pin respectively. Volume control is effected by forcing the indexing pin over one or more notches as desired. The volume setting is not easily altered by vibration of the instrument.

REFERENCES:
patent: 2643634 (1953-06-01), Hoyka
patent: 3671958 (1972-06-01), Storz

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