Patent ID: 7908839
Filing Date: 2011-03-22
Classification: D01H

Abstract:
1. Two-for-one twisting spindle having a pneumatically actuated threading device for a thread, with a spindle shaft which can be rotated about its vertically arranged rotational axis and is partially configured as a hollow shaft and, in the lower part, has a feed bore extending coaxially to the rotational axis, and with an injector element, which opens into a thread guide channel of a thread guide ring and which, during the threading process, can be temporarily connected by means of a compressed air feed to a compressed air source, a part of the compressed air feed to the injector element being formed by the feed bore, characterized in that the compressed air feed comprises a connection element ( 27 ) with a curved air channel ( 26 ), which connects the feed bore ( 24 ) to the injector element ( 16 ) and in that the connection element ( 27 ) is configured as a separate component and the air channel ( 26 ) is adapted to the flow requirements.