Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1980-09-22
1982-05-11
Pitts, Harold I.
Communications: electrical
Audible indication
Percussion-type sound producer
340392, 340402, 116152, G10K 1064
Patent
active
043296807
ABSTRACT:
A double gong bell has an outer gong and an inner gong separately arranged to accommodate the inner gong within the space defined by the inner surface of the outer gong. In one embodiment at least two hammer driving members, disposed within the space defined by the inner surface of the outer gong and slidably supported within a mounting means are adapted for reciprocal movement upon the action of a hammer driving means. The ends of the hammer driving members closest to the gongs are attached to a first resilient member and a hammer. A pair of second resilient members attached to the hammer driving members and the mounting means are biased to urge the hammers to strike the inner and outer gongs upon the action of the hammer driving means generating a bell sound having composite tone colors.
REFERENCES:
patent: 2205189 (1940-06-01), Edwards
patent: 2217073 (1940-10-01), Obergfell
patent: 3076960 (1963-02-01), Knutson
patent: 3435450 (1969-03-01), Pena
patent: 4183018 (1980-01-01), Sakaguchi
Kobishi Electric Co., Ltd.
Pitts Harold I.
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