Abstract: A fabric table (11) of a device (1) for altering a warp pile loop length during terry weaving is brought by a lever system from the starting position (V) into the partial beat-up position (T) and back again into the starting position (v). The lever system comprises a lever (18) and a drive (17, 171) acting at least roughly at right angles on this lever (18). The alteration in the distance (X) between the starting or complete beat-up position (v) and the partial beat-up position (T) of the fabric table (11) is performed by the displacement of the driving point (P) of the drive (17, 171) on the lever (18) and thus of the length of the effective lever arm of the lever (18). The separation achieved changing the position of the fabric table (11) between the complete (v) and the partial (T) beat-up position and of the actual backward and forward movement of the fabric table (11) permits an alteration and adaption of the fabric table travel and thus of the loop length.

Abstract: The mounting for the tension beam uses a connection means whereby the point of connection of the spring to the tension lever can be adjusted during operation. The connection means includes a toothed member in the form of a serration on the arm of the tension lever and a tooth element in the form of a rotatable pinion which is disposed at the end of a draw fork connected to the spring. A releaseable clamping means is also provided to prevent rotation of the pinion.

Abstract: The support arm of the bearing mounting is freely supported from the holder so as to move vertically up and down so that vibrations of the warp beam which occur during operation cannot be transmitted to the floor of the weaving room or building. The support arm is adjustable rotatably about the holder as well as axially along the holder. In addition, a web connection can be used to fix an intermediate part of the support arm to another beam within the machine frame on the warp side of the main beam.

Abstract: The pulse transmitter is synchronized with the weaving cycle of the machine drive and carries at least one sensing surface of variable shape. A detector is secured to the tension beam and is responsive to changes in warp tension. The detector carries a sensing element in the form of a proximity switch which is disposed over the sensing surface of the pulse transmitter. Depending upon the position of the proximity switch relative to the sensing surface, a pulse is emitted to the warp beam drive for stepping of the warp beam as the pulse transmitter rotates past the sensing element. This pulse is variable in the time-of-occurrence as well as in duration.