Abstract: The invention relates to the heat treatment of continuously moving length of textile material in a treatment apparatus with at least two successive treatment zones by means of hot gas. After it has been heated, all of the exhaust gas from the first treatment zone is introduced into the second treatment zone as fresh gas. An exhaust gas branch stream drawn off at the end of the second treatment zone is afterburned. The exhaust gas branch stream which has been heated in this way first of all preheats the second exhaust gas branch stream coming from the second treatment zone, and before being discharged into the atmosphere the exhaust gas branch stream coming from the first treatment zone and the fresh air air heated. In this way extremely economic operation of the entire treatment apparatus is provided, with reliable purification and disposable of the exhaust gas.

Abstract: The invention relates to a conveyor chain for machines for tensioning lengths of material, with pairs of outer fishplates and pairs of inner fishplates flexibly connected by chain joint bolts and with support members for grippers or needle plates. The pairs of inner fishplates are supported by means of joint sleeves on the chain joint bolts, needle bearings are arranged between the joint sleeves and the chain joint bolts and ball bearings are provided on the outer peripheral surfaces of these chain joint bolts. These ball bearings are constructed like roller bearings with particularly thick outer races, and the outermost outer fishplates rest with a bore clearance on the chain joint bolts. This conveyor chain is distinguished by a simple and stable construction which requires little maintenance.

Abstract: A tensioning machine for the continuous treatment of a length of textile material comprises a pair of moving conveyor devices having parallel runs provided with a plurality of grippers. A mechanism for closing the grippers is provided at the inlet end of the conveyor runs and a mechanism for opening the grippers is provided at the outlet end of the conveyor runs. Each of the mechanisms includes a moving actuating device which is driven synchronously with the conveyors and moves in the same direction and at the same speed as the grippers. The tensioning machine is particularly suitable for comparatively high conveying speeds.

Abstract: The tensioning machine serves for a heat treatment of lengths of material which are guided widthways, particularly textile material. Two tensioning chains convey the lengths of material in the usual way through an inlet zone, a plurality of heat treatment zones and an outlet zone, and the advancing and returning strands of the tensioning chain are supported and guided in chain guide rails. In order to cool the tensioning chains very effectively and thereby to be able to prolong the operational life of the high-temperature grease which is used, cooling air blowing arrangements by which the used cooling air can be introduced into the heat treatment zones as preheated fresh air are associated with the long sections of the chain guide rails running inside the heat treatment zones.

Abstract: The invention relates to a material store for the through transport of a length of textile material. It contains a storage vessel with an upright delivery shaft, an upright extraction shaft and a turn-round section which connects the lower ends of the shafts, and transport arrangements for the delivery and removal of the length of material are provided above the two shafts. In the turn-round section of the storage vessel the length of material is turned round with the aid of a rotating turn-round device and a break roller can be pivoted from the inner face of each of the shafts into the cross-section of the shaft.By these means the length of material is transported through the storage vessel satisfactorily and extremely gently with an extremely high degree of stabilization.

Abstract: A method of heat treatment of a length of material in a tentering machine is characterized by the following steps:(a) first of all a material-specific characteristic value is determined by measuring a material sample;(b) then at least one parameter for the method of heat treatment is calculated taking account of this material-specific characteristic value and is set before the commencement of the heat treatment;(c) during the heat treatment at least one characteristic quantity for the method of heat treatment is measured, compared with a calculated value for this characteristic quantity, a correction signal corresponding to the difference between the measured value and the calculated value is formed and the present parameter of the method of heat treatment is altered in accordance with this correction signal.

Abstract: The invention relates to a tensioning chain provided with grippers in which the gripper body is made from cast spheroidal graphite or high-grade cast steel, the arms for pivot mounting of the gripper flap run at an angle upwards, the angle between the two arms of the gripper flap is kept small and the ratio of length to diameter of the link pins is between 1:0.9 and 1:1.5. Such a gripper is distinguished in particular by a particularly low overall height.

Abstract: The invention relates to apparatus for determining the timewise progress of the drying of a damp material sample. The material sample is continually connected to a movable part of a weighing mechanism during the drying process, and the delivery of the drying air stream can be interrupted in time with the weighing. Such apparatus facilitates automatic determination of the drying progress curve.

Abstract: The invention relates to a method and apparatus for the automatic lubrication of the links of continuously moving material transport chains in a tensioning machine. The supply of lubricant is switched on and off for the duration of at least one complete circuit of the transport chain as a function both of the speed at which the chain goes round and the prevailing temperature in the tensioning machine, while an pulse count signal which is proportional to the speed at which the chain goes round and is used to control the supply of lubricant is multiplied by a multiplication factor formed from an actual value for the temperature, so that optimum lubrication of the chain links is provided.

Abstract: A support for a textile tensioning machine conveyor chain and wherein a first needle bearing assembly is arranged between the joint bolt and a bushing and a second needle bearing assembly is arranged between the bushing and a protective roller. Such a chain support can be provided with permanent lubrication even at a high conveyor speed and thus requires little maintenance.

Abstract: A tensioning machine for use in the heat treatment of textile fabric for controlling the widthwise dimension of the fabric comprises a pair of continuously movable tenter chains for moving the fabric along a path and supported by guides which are coupled to one or more rotatable spindles operable to adjust the guides transversely of such path. One end of each spindle is both rotatable and axially movable and cooperates with a force sensitive device that is operable in response to an alteration in the force applied thereon to generate a signal. Each spindle is coupled to a rotary drive, the operation of which is controlled by the signal generated by the associated force sensitive device.

Abstract: The invention relates to an apparatus for the treatment of continuously transported lengths of textile material comprising a housing within which is a rotatable drum filter, an extraction and cleaning nozzle extending approximately axially over the outer peripheral surface of said drum filter, and a blower and duct for establishing a circulating air stream through the textile material and the filter. Fibres extracted from the filter by the nozzle are conducted to and deposited on an air filter that also is located in the housing in a position to be readily accessible for maintenance.

Abstract: A process for heat-treating and, in particular, for drying and/or fixing a continuously moved fabric web in a treatment unit comprising at least two treatment zones through which the fabric web successively passes, using a hot gas stream recirculated in the treatment unit, a certain quantity of waste gas being continuously removed from the treatment unit and freed from constituents present in it and some of the waste gas thus treated being returned to the treatment unit after reheating, the rest of the waste gas being released into the atmosphere.