MECHANICAL SOUND SYNTHESIZER (VERSIONS) Russian patent published in 1997 - IPC

FIELD: door bells with use of adjustment of sound gamma. SUBSTANCE: body houses percussion fixture 3 and radiator 2. Hammers strike radiators in the form of plates chaotically or in certain sequence with movement of driving rod. According to one version radiators are attached in parallel to upper and lower parts of body 1. In agreement with second version radiators are manufactured in the form of bells put on rotary shaft through brackets. One of them is connected with use of spring to driving rod and any other is joined with spring to body. In compliance with third version driving rod is manufactured in the form of helical band surface. Percussion fixture is produced in the form of rod with spring-loaded hammer. Sound generating plates are placed uniformly over circumference of ring of bottom of body in its slots and are anchored in bottom and cover of body for turning. EFFECT: increased reliability of mechanical synthesizer. 8 cl, 5 dwg