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Priority to ES0069715UpriorityCriticalpatent/ES69715Y/en
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Publication of ES69715YpublicationCriticalpatent/ES69715Y/en
An improved speed changer, characterized in that it consists of a rotary control button, which at its lower edge has an inclined profile with three notches for reference of positions in relation to the end of an axially displaceable pin and subjected to the tension of a spring which tends to push against the inclined profile of the button, which also has coaxially a body of irregular section, which, depending on the position of the control button, acts on an electrical switch joining or separating its contacts, and, simultaneously, fixes the position in a direction of a tilting lever integral and in normal position, to the axially displaceable pin, the end of said lever being articulated with another, in which a friction wheel is mounted, relating different sections of a motor shaft with a dragged wheel. (Machine-translation by Google Translate, not legally binding)
Improvements in or relating to an electrical switch for selecting the direction of movement of an electrically-driven member, such as a table or slide, of a machine tool
A perfect device to indicate inadmissible variations of position between two relatively movable elements between (Machine-translation by Google Translate, not legally binding)