Abstract: A universal transport mechanism for auxiliary devices in weaving mills, including a single rail mounted above the weaving machines, and two or more guides along which respective auxiliary devices can travel unhindered by each other.

Abstract: A measuring and detecting device for determining the position of a break in a warp thread on a weaving machine. The machine makes possible a determination as to which side of the device the break is situated, what distance from the device the break is situated, and whether a broken warp thread has come free or has become entangled. The device includes thread guides placed at a distance from each other which can be presented against the warp thread, a mechanism for gripping the broken warp thread and drawing it between the thread guides, measuring devices mounted on the thread guides or on the gripping mechanism, and a processing unit for processing data obtained from the measuring devices.

Abstract: A device for removing waste products from weaving machines consists essentially of two air-moving parts: a first part 9 which travels along the machine or machines to be cleaned; and a second part 10 which is mounted on the machine or machines concerned, so that the first and second parts can operate together. The parts 9, 10 establish a moving air stream or streams such that waste products are transported away from the weaving machine by the air stream(s). A single one of the parts can be moveable along different weaving machines while the other part is fixed on the weaving machines.

Abstract: A method for repairing a break in a weft thread which occurs before the thread accumulation space of a weft accumulator includes the steps of drawing the thread reserve present in the weft accumulator after the break back towards the end of the thread which is connected to the yarn package, and subsequently joining it thereto. A weaving machine for practicing the method includes a detection device for detecting a break in the weft thread, a threading device for drawing the thread reserve in the weft accumulator back towards the remaining weft thread, and a thread joining device.

Abstract: Method for repairing the thread supply in weaving machines in the event of an interruption between the weft thread supply package and the weft accumulator, with the characteristic that it consists essentially of: seizing an existing thread portion at a particular point of the thread supply on the weft accumulator drum; removing the portion of thread between this point and the point of the interruption; taking a new thread end from the same weft thread supply package or another and leading it to the old weft thread end; and joining the new end to the old end.

Abstract: A method and device for releasing defectively inserted weft threads in weaving machines by reversing the machine to expose the defectively inserted thread in the open shed, initially releasing the weft thread from the ends of the fell by moving the weft thread away from the fell at its ends, positioning releasing elements between the released portion of the weft thread and the fabric fell, releasing an additional portion of the weft thread from the fell by moving the releasing elements away from the fabric fell toward the machine reed, positioning an additional releasing element between the seft thread and the fabric fell, releasing an additional portion of weft thread from the fell by moving the additional releasing element away from the fell and toward the reed, and containing the positioning of the releasing elements across the shed of the weaving machine until the weft thread is released over the entire length of the shed.

Abstract: A process for manipulating fallen warp thread detector drop wires and revealing their location includes gripping and rotating a fallen wire, while spreading adjacent wires of the pack apart by a spreader and raising the fallen wire above the pack. Apparatus for gripping, rotating, spreading and lifting is disclosed.

Abstract: Method for detecting the presence or absence of warp threads clinging together, with the characteristic that it consists principally of a combination of: initiating a machine stop when a warp stop signal is received indicating that a contact has been made by a drop wire 9; checking for a fallen drop wire 9A; and, if no fallen drop wire is found, restarting the machine at least once and interpreting a warp stop motion generated upon restart as an indication that the warp threads 2 are clinging together.

Abstract: During the weaving process, the location and displacement of the cloth line and/or the breast beam are continuously detected; the detected value is supplied to a drive unit; in the event of a variation in cloth line location with respect to the desired location, the breast beam is moved by means of a drive unit such that the cloth line is returned to the desired location, or in other words, the cloth line is automatically maintained and/or returned almost to the desired location by means of the breast beam.

Abstract: Weft inserting device for pneumatic weaving looms, of the type comprising a yarn pulling off mechanism, an air jet nozzle next to an edge of the warp, and a clamp which is located between these two last named components, this clamp being cyclically controlled to clamp the yarn at the end of the insertion of the next weft yarn, characterized in that the mutual geometric positions of the yarn pulling off mechanism and of the clamp are selected in relation to the position of the jet nozzle so that the yarn completely leaves the clamp whilst the latter is open.

Abstract: A novel method for operating gas turbine combustors while minimizing the formation and discharge of pollutants such as NO.sub.x is described. In one embodiment, the use of more than one catalyst in series is employed to effect fuel oxidation at temperatures below flame temperature, thereby minimizing NO.sub.x formation.In another embodiment, a staged catalytic combustor is employed comprising a two zone combustion chamber involving a noncatalytic zone in which fuel is partially combusted under fuel rich conditions and combustion is completed in the second zone, utilizing catalytic oxidation with excess air to complete the combustion and minimize NO.sub.x formation.Still another embodiment concerns the use of a novel design for the primary combustion zone by which fuel is partially burned with substoichiometric amounts of air and, thereafter, the partially burned primary zone effluent is mixed into the secondary air stream where continued combustion proceeds at a temperature below that needed for NO.sub.

Abstract: An improved process and apparatus for separating solid particulate from a gas stream having the same entrained therein. The separation is accomplished with a magnetic separator comprising a plurality of electro magnets disposed generally around or within the periphery of the gas stream or extending through a cross-section thereof, which magnets are operated such that continuous separation is possible. When the solid particulate is not, normally, subject to magnetic attraction, the same may be rendered subject to such attraction by incorporating a suitable compound therein. This is most conveniently accomplished by adding a precursor of such a compound to the process in which the solid particulate is formed at a point after which the subsequent process steps would result in the conversion of the precursor to a suitable material. The particulate is, of course, separated from the gas stream by magnetic attraction and is then withdrawn from the solid separator by "turning off" the electro magnet or magnets.

Abstract: An illuminated optical viewer for facilitating corrective operations on an object comprises a work platform which can be moved along two mutually perpendicular coordinates and on which in use of the viewer the film negative or other object to be touched-up or to have any faults corrected will be positively located first optical means projecting an enlarged objective image of a small area of the object, located at one position, on to a screen, second optical means producing an enlarged stereoscopic virtual image of a portion placed at a second position displaced from said one position by a predetermined distance in a predetermined direction, said virtual image being formed in substantial alignment with the portion of the object at said second position, scanning means for adjustably moving the object along two co-ordinates of a plane, and two-position changeover means for so shifting the object as to displace an object portion which is located at said one position to said second position without affecting the a