Abstract: A double twisting spindle is equipped with a pneumatically operated threading device. An injector nozzle is provided in the spindle rotor, an air stream through which nozzle sucks a thread into a hollow spindle axle and moves the thread through a thread channel in the storage plate. A compressed-air supply device is arranged below the spindle rotor for supplying compressed air to a central connecting channel provided in the spindle rotor and in communication with the injector nozzle. A common operating lever is provided which first operates a spindle brake and then opens a valve of the compressed-air supply device. The connecting channel has at its open lower end a funnel-shaped enlargement.

Abstract: A service carriage for use with a spinning, twisting or winding frame which has a plurality of equally spaced spindles and a plurality of equally spaced work stations thereon. A compressed air system on the carriage is supplied with compressed air from a source of compressed air via a compressed air duct. The compressed air duct is fixedly arranged at each side of the frame and extends in the longitudinal direction of the frame and is connected to the compressed air source. The air duct has a plurality of automatically closing button-actuated valves which are connected in circuit therewith. Each of the valves has a closure member associated therewith. The spacing between the valves corresponds to a whole integer multiple of the spindle spacing. A plurality of coupling heads are arranged one behind the other in the direction of movement of the carriage and are mounted on a common slide member.

Abstract: A threading device for double twist thread twisting frames which have a spindle and a suction device movable toward a storage disc on the frame. A service carriage is movably mounted on the frame along one side thereof. A threading head is movably mounted on the service carriage and is movable between a rest position remote from the spindle and a threading position in which it is in registry with the upper end of the spindle. The threading head has on its side facing the spindle axis an inlet slot that extends parallel to the spindle axis. A thread channel is provided adjacent the bottom of the inlet slot and, in the threading position of the threading head, is in registry with the spindle axis. At least two holder elements are mounted on the frame and are spaced one above the other and substantially in the plane of movements of the inlet slot on the threading head.

Abstract: A double twist thread twisting frame having a plurality of double twist spindles thereon each of which is surrounded by a balloon limiter having an upper rim thereon and at their lower parts a storage disc and a whorl driven by a belt spaced below the storage disc. A closure structure is provided around each balloon limiter to define a channel which communicates with the spindles and the interior of the balloon limiters. A suction device is connected in circuit with the channel means to evacuate the air contained therein. The closure structure, particularly an upper wall thereof, is located generally at the level of the upper rim of the balloon limiter and has a circular opening coaxial with the upper rim of the balloon limiter. The circular opening is somewhat smaller in diameter than the upper part of the balloon limiter.