Door harps

Details Door harps Door harps

1989-09-13

1990-12-11

Cuchlinski, Jr., William A.

Signals and indicators

Alarms

Closure operated

84173, G08B 2100, G10D 100

Patent

active

049762141

ABSTRACT:
A door harp having a body portion with a front face and a back and at least two spaced apart pegs mounted on the front face having a tensioned string extending between them and a pendulum like chiming device extending from a bracket mounted on the front face above the string in a position to strike the string when the door harp is moved. The door harp also includes a cavity formed in the back forming a resonance chamber and a sounding board. A groove extends from the bottom of the cavity towards the front face of the body portion and surrounds the sounding board.

REFERENCES:
patent: 456027 (1891-07-01), Ernst
patent: 515323 (1894-02-01), Carswell
patent: 721063 (1903-02-01), Mohr
patent: 2705936 (1955-04-01), Garson
patent: 3780612 (1973-12-01), Robinson
patent: 4126072 (1978-11-01), Taylor

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