Variable-volume electromechanical bell - has wire spring and finger attached to hammer and acted on by setting wheel

Variable-volume electromechanical bell - has wire spring and finger attached to hammer and acted on by setting wheel

The bell has a hammer (4) oscillating from side to side between two hemispherical cups (18,19) or similar that produce the sound. The hammer has a finger (21) attached to it and whose position can be altered via the cam (16) of a setting wheel. An element (20) is attached to the hammer parallel to t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WAECHTLER,RUDOLF,DR, ANTON,HORST, BERGMANN,HERBERT, IBSCHER,KARL, WALLOW,RUEDIGER
Format: Patent
Sprache:eng ; ger
Schlagworte:
ACOUSTICS
ACOUSTICS NOT OTHERWISE PROVIDED FOR
METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL
MUSICAL INSTRUMENTS
PHYSICS
SOUND-PRODUCING DEVICES
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Beschreibung
Zusammenfassung:The bell has a hammer (4) oscillating from side to side between two hemispherical cups (18,19) or similar that produce the sound. The hammer has a finger (21) attached to it and whose position can be altered via the cam (16) of a setting wheel. An element (20) is attached to the hammer parallel to the finger and has spring-like properties. The free end of the element also cooperates with the cam. The element may be a springy length of wire. In the quiet end-position of the setting wheel the wire rests on the cam instead of the finger's resting on the cam -- which means that the electromagnetic armature (driving the hammer) has sufficient play to generate noise.