Appliance for impeding or blocking the propagation of the twist of threads

摘要

Appliance (16) for impeding or blocking the propagation of the twist of a thread running on a spinning and twisting machine, which appliance has a carrier (18) and an adjustable thread guide (17) which, in a first position, does not inhibit the thread run and, in a second position, greatly reduces or blocks the propagation of the twist of the thread in order to produce a thread break. So that it is possible to sense when the thread guide (17) is deflected out of its first position for initiating a thread break, a dry-reed contact (26) is located opposite the thread guide on the carrier (18) and a permanent magnet (27) cooperating with the dry-reed contact is located on the thread guide (17). <IMAGE>