Abstract: An apparatus is described for laying down continuous material 15, for example filament tows, which runs on a determined level, from which level it is given a meander form by means of a turning wheel 1, the periphery of which is provided with reversing elements 2.Forming of meanders from the continuous material 15 is performed by means of one single wheel 1. Catching devices 5 are provided between the reversing elements 2 which, from the outside of the plane of running continuous material 15, slue into this plane and by this inward motion form meanders of the running continuous material 15, and subsequently slue back from the plane of the continuous material 15 to their initial position, thus releasing the meanders of continuous material 15 formed for being laid down. The catching devices 5 can be arranged on forks 4 which slide in guide grooves 3 in the wheel 1, and the forks 4 can be driven by slide rods 10, whose motion cycle is determined by a cam disk 13.

Abstract: Method and apparatus to remove wrinkles in a running web of material by the use of rotating members on the selvedges of the fabric in conjunction with vacuum pressure to urge the selvedges outward and to slightly overfeed the fabric.

Abstract: A felting machine for non-woven fabrics comprising a frame provided with a guide path for the fabric and two needle boards. Two crank-rod mechanisms are fixed to a beam of I-shaped cross-section. Each mechanism comprises two crank-rod units fixed on both sides of the web of the beam. These units are easily accessible through the front or through the rear of the machine in any operating position of the system.

Abstract: The present invention is an apparatus for biaxial orientation of precrystalline polyacrylonitrile polymer sheet consisting essentially of a machine direction orientor which stretches the sheet in the machine direction a transverse direction orientor which stretches the sheet in the direction 90.degree. to the machine direction, both processes of which may be completed rapidly in a heated essentially aqueous environment.

Abstract: The present invention relates to a machine for fraying woven fabrics, comprising a table adapted to receive the fabric; a drive device adapted to advance the fabric over the table; an engaging device with reciprocating vertical displacement adapted to pass the yarns of the fabric which are parallel to the direction of advance, through an opening in the table; a cutting tool disposed beneath the table to cut the yarns having passed through said opening, so as to obtain a drawn fabric having only yarns perpendicular to the direction of advance; and a fraying knife disposed above the table and behind the engaging device, with respect to the direction of advance, to cut the yarns of the drawn fabric and fray the fabric.

Abstract: A molded plastic hanger and a clip for use therewith or with other members. The hanger includes a body portion having a diverging pair of arms including slots therein and a crossbar for mounting garment holding clips. A plastic swivel hook is connected to the body portion at a stem. The stem includes a shaft having an annular locking recess in its periphery which is adapted to be received within a mating socket of the hook to connect the hook and body portion to each other while enabling them to be swiveled readily with respect to each other. The clip is arranged for securement to the crossbar of the hanger or to any other rod-like element and is formed of a three piece construction comprising a pair of plastic jaws and a resilient U-shaped member, also formed of plastic, but having a higher tensile strength and resiliency than the plastic of the jaws.

Abstract: An apparatus comprising a fixed roller and a movable roller movable toward and away from the fixed roller to correct the deviation of a travelling fabric by nipping a selvage thereof with the two rollers. The movable roller is biased by a spring toward the fixed roller for nipping the fabric but is normally held away from the fixed roller by a forward stroke of a cylinder against the action of the spring. The spring is provided with a member for adjusting the spring force, and the stroke of the cylinder is also adjustable. The axis of the movable roller is slightly shiftable automatically relative to the fixed roller to assure proper nipping engagement with the fabric.

Abstract: A control system is provided for maintaining a constant predetermined transverse width in a continuous elastic or extensible web while the web is traveling longitudinally and while simultaneously transversely aligning the longitudinally moving web in register with a transversely extending work station which transversely extends across the web path at a preset location. The invention further provides contoured electrifier apparatus which is adapted for use in the polishing of three dimensional deep pile surface contoured fabrics and the like. In addition, the invention provides ways of adapting the control system for use with a plurality of transversely extending processing units, each one of which can have transversely varying process conditions such as required in a contour shearing device or contoured electrifier.

Abstract: The invention relates to a control apparatus for a pneumatic impact wrench driven by an air motor.

Abstract: The invention refers to a machine for the production of velour needlefelt webs through processing a fiber fleece bonded through needling, using velour or fork needles forming pile loops, wherein at least one fiber fleece band consisting of several layers is helically wound to form a tube continuously developing in axial direction, said tube rotating about its own axis, wherein the individual layers of the fleece band partly overlap on each wind and the lower or inner-lying layers of the wound tube are bonded in a width which is smaller, preferably up to half the width of the width of the fleece band in a known manner using felting needles and from the upper or outer-lying loose fiber layer of the wound tube, the fibers forming the pile loops are pushed through the pre-bonded lower or inner-lying fiber layer in a known manner using fork needles and wherein the finished processed tube is cut open in axial direction, laid flat and the so-formed material web wound up.

Abstract: An improved method of manufacture of a nonwoven fabric wherein a nonwoven fabric web is passed through a needle punching zone wherein the nonwoven fabric web is needle punched in such a manner that the number of needle punches per unit area in the edge portions of the nonwoven fabric web is less than the number of needle punches per unit area in the medial portion of the nonwoven fabric web, and the thus needled nonwoven fabric web is passed through a tentering zone wherein it is stretched transversely relative to its direction of movement to thereby reduce the weight per unit area of the edge portions to approximately the weight per unit area of the medial portion so that a nonwoven fabric of substantially uniform thickness and weight per unit area is produced.

Abstract: A massive piston, which might be called a "ram", except that it does not strike anything during operation, reciprocates with bouncing action up and down within a cylinder. An annular pressurized gas storage chamber encircles the piston and travels up and down with it. Pressurized gas is continuously supplied into this movable chamber to be temporarily stored therein. As the piston descends toward the lower end of the cylinder, pressurized gas from this travelling chamber is automatically suddenly allowed to bypass the lower portion of the piston, thereby injecting the pressurized gas into a bounce chamber between the descending piston and a bottom assembly. When this pressurized gas rushes through the bypass, it forces an exhaust valve closed.

Abstract: An integral ventilating curtain is disclosed for use with a supporting structure to define a cubicle enclosure preferably of the type utilized for hospital beds or the like. The ventilating curtain is in the form of a fabric constructed of knitted inherently flame retardant yarn materials, and having a first section having a stitch density sufficient to render it sufficiently opaque to provide privacy for the user thereof. A second section is formed integrally with the first section and is in the form of an open mesh construction having knitted stitches of lesser density than the density of the knitted stitches of the first section so as to permit the passage of light and air to provide light and ventilation for the user.

Abstract: To prevent the formation of remnant thread pieces due to response of a thread cutting apparatus 2, 3, 4 coupled to a thread or yarn cleaning device 36, which erroneously responds with an "off-size" signal upon a thread break, the cutter blade is guided in front of the thread when tensioned--under ordinary conditions--but loose if the thread should be broken. Under tension, movement of the cutter blade 2, 3 will sever the thread; when the thread is slack, the cutter blade can move into a groove 4, 4' of a counter element or anvil, which groove is deeper than the travel of the cutter blade to accomodate the slack thread. For heavier threads, the forward portion of the cutter element can be movable (FIGS. 4-6) to be pulled against a counter surface 14 by a taut thread, but to engage into the deeper groove 4' by a slack thread not having the pulling action on the blade.

Abstract: A crimped thermoplastic filament which may be used in a separable hook and loop area fastener, preferably of nylon or the like, is permanently crimped into a zig-zag sawtooth configuration, by passing the same between a pair of oppositely rotating sawtooth forming rolls. The continuous filament is turned back on itself at acute angles in its zig-zag form. The cut ends of the filament present a plurality of zig-zag, hook like formations.

Abstract: A drill rig for drilling a hole in the ground including a mast, having a longitudinal slide means at one face thereof, adapted to be set upright with the slide means facing, and being at a selected spacing from and parallel to the axis of a drill hole to be drilled with the rig; a slide frame mounted upon the mast slide means and lifter-pulldown means in the mast to move the slide frame along the longitudinal slide means; a lateral shifting means on the slide frame shiftable towards and away from the slide frame in the direction of the drill hole; a drill carrier attached to the shifting means to be shifted to a first position against the slide frame and to a second position outwardly therefrom; and a drill mechanism means including a drill pipe means mounted upon the drill carrier to effect drilling by a drill pipe means, with the drill pipe means being aligned with the drill hole axis when the drill carrier is at one of said positions.

Abstract: A hydraulic control system for use with a rock drill is adapted to sense a pressure build-up in the drill's rotation motor and in response thereto, to reverse the direction of feed of the feed motor as well as to supply hydraulic fluid to a shank cylinder on the rock drill. Supplying hydraulic fluid to the shank cylinder assists in freeing the drill from the rock.

Abstract: A method for forming a web of weft yarns, which run transversely relative to the length of the web, and which may be incorporated in a non-woven fabric, wherein a pair of laterally spaced substantially parallel helical yarn guide members are each rotated about their own axis and at least two yarn feed elements are rotated about an axis parallel to and between the two laterally spaced helical yarn guide members, the weft yarn being fed through at least two of the yarn feed elements whereby they are wrapped around the laterally spaced helical yarn guide supports. A yarn guide ramp is provided adjacent each helical yarn guide member on the upstream side of the member, with respect to the direction of rotation of the guide element, the yarn guide ramps guiding the yarns as they leave the feed elements so that they are engaged between successive turns of the helical yarn guide members.

Abstract: The temperature of a heating fluid used in a yarn crimping zone is controlled in response to whether a yarn plug is detected at a predetermined point, and in another embodiment a fluid is heated, passed to a yarn heating zone and a yarn is heated in the zone in response to whether the yarn is being wound in a yarn winding zone.

Abstract: A vehicular mounted pipe presser includes a pipe-pressing assembly for pressing pipe through a medium wherein the assembly is movably supported by a vehicle and positionable between surfaces which are transverse to the direction of forces employed to press the pipe. The assembly includes a frame having projectable and retractable feet for engaging the transverse surfaces to stabilize the assembly. Movably carried by the frame is a housing for receiving the pipe and a clamping mechanism which floats with the housing for clamping a portion of the pipe. Two clamp jaws of the clamping mechanism are captured within the housing and pressing forces are limited to the housing and the clamp jaws. The projection and retraction of the feet, reciprocable movement of the housing, and clamping of the pipe within the housing are each separately controllable from a stage carried on the housing by hydraulic systems.