Abstract: Apparatus for measuring the length of textile material wound onto a lap beam and in particular, onto a dyeing beam, having (a) a pressure roll bearing upon the beam lap and mechanically connected with a displacement detecting transducer that emits measurement impulses, (b) a beam-driven shaft encoder that emits a predetermined number of calculation impulses for each revolution of the beam, and (c) a computer that calculates the partial lengths of the laps (lt) from the measurement impulses and the calculation impulses. The displacement detecting transducer is movably or slidingly interengaged with an elongated linear member in the form of a toothed rack hinged so that a projection of one end always intersects the longitudinal axis of the lap beam.

Abstract: A device for the start-up control of bobbin creels for warp beams or warping reels, the winding heads of which, disposed in rows and columns, each have associated with them a yarn monitor, which causes the yarn to be deflected by a stop-motion sensor, and a yarn gripper, by means of which a yarn can be clamped between a thrust block and a clamping jaw, which interacts with the thrust block and has limited motion, and which is acted upon by a control element, especially a control spring, the clamping force of which in the clamping region between the clamping position and the open position can be controlled while the machine is starting up by an adjusting device, which acts jointly on all the yarn grippers open position.