Improvements in or relating to Motor Horns which Produce Different Sounds in Sequence, applicable to Analogous Sound Producing Instruments.

摘要

24,677. Godin, A. A. Oct. 27. Wind i n s t r um e n t s. - In a multiple horn giving a succession of different notes, distribution of the air is effected by means of a perforated diaphragm to which a reciprocating movement is imparted by the variation of air pressure which movement is arranged to effect its rotation. The diaphragm h is mounted on a rod k, which carries also a perforated piston-plate o and a head n. Ribs n1 on the head n engage with crown teeth m2 on fixed sleeves m, m1 so that the spindle is rotated one tooth each time it is reciprocated by the air issuing from and returning to the bulb. Each step brings one or more ports in the diaphragm opposite ports c1 leading to the respective horns.