Abstract: A pneumatic valve device for a yarn feeding device includes a housing, at least two valves in flow channels leading to a plurality of consumers, and first and second valve openers. The first valve opener establishes a connection with at least one consumer, whereas the second valve opener can establish a connection with all of the consumers. Flow channels are provided which are separated from one another and lead to the at least one consumer and to the remaining consumers, and a unilaterally operating drag coupling is also provided between the second valve opener and the valve that is actuated by the first valve opener. The actuating movement of the second valve opener is also transferable to the valve by means of the unilaterally operating drag coupling. In the yarn feeding device, a first threading nozzle or the first and at least a second threading nozzle are selectively pressurized by means of the valve device, optionally together with a pneumatic piston-cylinder unit.

Abstract: A device for feeding yarn with a constant adjustable tension, for use in weaving looms and in other weaving machines, comprises a brake acting on an end cap of the winding drum--held stationary--of the device. The brake is a plurality of elastically yielding metal elements, positioned radially in a support designed to envelope the cap and mounted with possibility of self-centering in respect of the cap, these elements engaging the outcoming yarn about a circumferential area of the cap having a slightly smaller diameter than that of the winding drum of the feeding device.