ES250623A1 - Improvements in the changes of speeds for electrically powered domestic sewing machines (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improvements in the changes of speeds for electrically powered domestic sewing machines (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Fratelli Borletti SpA
Borletti SpA
Original Assignee
Fratelli Borletti SpA
Borletti SpA
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Application filed by Fratelli Borletti SpA, Borletti SpAfiledCriticalFratelli Borletti SpA
Publication of ES250623A1publicationCriticalpatent/ES250623A1/en
Improvements in the changes of speeds for electrically operated domestic type sewing machines characterized in that the electric motor used to operate the machine and with which a rheostat cooperates to vary its speed is of the type that has a switch with two separate windings known per se same one of whose windings is provided for the operation of the engine to the normal steering wheel of the network that feeds it while the other is provided for the operation of said engine to a steering wheel by overcoming said windings combined with a switch intended to connect one or the other of them to the normal voltage power line. (Machine-translation by Google Translate, not legally binding)
ES0250623A1958-07-161959-07-08Improvements in the changes of speeds for electrically powered domestic sewing machines (Machine-translation by Google Translate, not legally binding)
ExpiredES250623A1
(en)
Steering wheel in sewing machines with two pulleys, one for the electric motor drive incorporated in the machine and the other for the accretion by external electric motor or pedal pedal (Machine-translation by Google Translate, not legally binding)
System for driving small machines for alternative operation with electrical and mechanical energy (Machine-translation by Google Translate, not legally binding)