Abstract: Apparatus for automatically determining the count of textile yarns containing a device for taking off definite lengths of a test sample from a supply, scales (19), and an evaluation unit. Means (20) are provided in the path of the test sample upstream of the scales for forming the length of yarn in each test sample into a ball-like bundle (K) for weighing. The ball-like bundle ensures that parts of the test sample do not hang over the edge of the scale pan (23) or become entangled somewhat so as to distort the determination of the weight. The ball-like bundle may be blown from the scale pan simply and safely after a weighing operation by an air jet. The high processing capacity the apparatus permits it to be interfaced with other test apparatus without any problem.

Abstract: The apparatus contains a feed device for the material to be tested, which feed device is formed by a pair of transport rollers (16). Both transport rollers are positively connected to a motor drive. Perfect forward feed of the material is thereby ensured under all conditions and careful treatment of the test material is also ensured, a factor which is particularly advantageous if further measurements are to be carried out on the test material after it has passed through the feed device.As the test material passes through the transport rollers, a traverse motion along the axes of the transport rollers (16) takes place between said rollers and the material to be tested. This ensures very uniform wear on the transport rollers, which in turn ensures smooth forward movement of the material in all circumstances. It also ensures that the path of movement of the thread does not vary during the measuring process.

Abstract: The apparatus contains a measuring comb for the material to be tested. The plate like projections of the comb define measuring gaps of different widths through which the material passes to be tested for determining characteristic magnitudes associated with that material. The measuring comb is adjustable transversely to the direction of movement of the test sample and each measuring gap is adjustable to a nominal position. Consequently, the test sample passes through each measuring gap under the same geometrical conditions and is not subjected to deflections which vary from one measuring gap to another. A device for temporarily removing the test sample from the measuring gap, and subsequently guiding it back into the gap, is arranged in the region of the measuring comb so that the zero setting of the apparatus may be adjusted.

Abstract: A method of increasing the long-term stability of a measuring element for a textile testing apparatus, said measuring element including a plurality of parallel plate-like components which comprises causing an artificial airstream to sweep over the top of the measuring element to form a secondary air convection which maintains constant ambient conditions in the vicinity of the measuring element.

Abstract: A method and apparatus for transporting yarns, especially filaments, through measuring units provides for driving the yarn from a yarn supply to a measuring point by means of delivery rollers disposed upstream of the measuring point in the direction of travel of the yarn and pulling on the yarn downstream of the measuring point to apply a predetermined amount of tension to the yarn, the pulling of the yarn being effected by a nozzle acting in the manner of an injector producing an airstream entraining the yarn so as to pull and also selectively rotate the yarn to apply a twist thereto.