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Priority to ES0055172UpriorityCriticalpatent/ES55172Y/en
Publication of ES55172UpublicationCriticalpatent/ES55172U/en
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Publication of ES55172YpublicationCriticalpatent/ES55172Y/en
Change of speeds of the cylinders in the handlebar pianos, characterized in that it is constituted by a frustoconical pulley coupled directly and indirectly to an electric motor and equipped with a series of circular channels of different diameter, from which the movement is transmitted through a belt or the like to an intermediate speed reducer, from which said movement is in turn transmitted by a second belt or similar to a receiving pulley preferably coupled to the barbed cylinder of the piano, which, independently of the constant reduction thus achieved, increase or decrease in speed when for this purpose the belt is moved, respectively, from the largest to the smallest of the channels made in the frustoconical pulley by the thrust of a fork belonging to a control changer that is operated from the outside of the piano. (Machine-translation by Google Translate, not legally binding)
ES0055172U1956-07-101956-07-10
Cylinder speed change on handlebar pianos
ExpiredES55172Y
(en)