Abstract: A fabric having open areas is knitted from a plurality of body yarns interspersed at intervals with locking yarns having a lower melting temperature by casting off selected loops in selected body yarns, causing the cast-off loops to unravel toward but not past the respective locking yarn, and heating the fabric to cause the locking yarns to fuse to the touching body yarns, thereby preventing the cast-off loops from unraveling past the respective locking yarn.

Abstract: An improved yarn supply package comprising a yarn package holder is provided with a first yarn waste bunch wound on the package holder at one end portion thereof and a second yarn waste bunch connected to the first waste bunch and wound on the package holder intermediate the first waste bunch and the opposite end portion of the package holder. A main yarn package is wound on the package holder a distance from the second yarn waste bunch and is connected thereto by a yarn transfer tail. A power cylinder-actuated yarn tailing mechanism and a control system for the automatic control of the operation of the tailing mechanism is disclosed wherein the rod end of the cylinder carries a first tailing pin for guiding the initial windings of yarn on the package holder to form the first yarn waste bunch. A second tailing pin is carried by a tailing pin head and is supported adjacent the piston rod so that it moves along a line parallel to the axis of the piston rod.

Abstract: An improved yarn supply package having a yarn package holder with first and second end portions a first yarn waste bunch wound on the package holder adjacent the first end portion, a second yarn waste bunch connected to the first waste bunch and wound on the package holder intermediate the first waste bunch and the second end portion of the package holder, and a main yarn package wound on the package holder a distance from the second yarn waste bunch and connected thereto by a transfer tail. Also disclosed is a method of producing the improved yarn supply package as well as a pneumatic cylinder-actuated yarn tailing mechanism and a pneumatic control system for the automatic control of the operation of the tailing mechanism.

Abstract: Apparatus suitable for protecting a spinneret in a spinneret pack comprises a plate and attaching means connected to the plate suitable for temporarily securing the plate to the spinneret pack so that the plate substantially covers the spinneret face.

Abstract: An annular workpiece is grasped by inserting a wedging member having two ends into the annular portion of the workpiece wherein the wedging member is longer than the diameter of the annular portion of the workpiece and positioning the ends of the wedging member against the inside surface of the annular workpiece.

Abstract: A scraper blade comprises poly(arylene sulfide) and carbonaceous filler wherein the amount of poly(arylene sulfide) ranges from about 40 to about 80 percent by weight and the amount of carbonaceous filler ranges from about 60 to about 20 percent by weight.

Abstract: A double knit fabric is knitted from at least a first yarn and a second yarn, said first yarn having a boiling water shrinkage ranging from boiling water shrinkage ranging from about 50 to about 95 percent, and said fabric containing from about 70 to about 90 percent of the first yarn and about 10 to about 30 percent of the second yarn.

Abstract: In polyamide compositions containing the reaction product of (1) a block copolymer of propylene oxide, ethylene oxide and an alkylene diamine and (2) a dicarboxylic acid ester in an amount sufficient to provide improved antistatic characteristics to the polyamide, the apparent dyeability can be increased by including in said polyamide composition a sufficient amount of at least one zinc dihydrocarbyl dithiophosphinate.

Abstract: In polyamides containing the reaction product of (1) a propylene oxide-ethylene oxide block copolymer based on ethylene diamine and (2) a dicarboxylic acid ester in an amount sufficient to provide improved antistatic characteristics to the polyamide, the tensile strength loss on exposure to heat is reduced by adding a thermal stabilizing amount of a phosphine oxide.

Abstract: Method and apparatus for producing a continuously smooth surface on a workpiece having an irregular surface comprising a nonsmooth area bordered by a smooth area. Said workpiece is subjected to electrical discharge machining with a rotating electrode, while maintaining an acute angle between the axis of said electrode and the face of said workpiece.

Abstract: Two packages of yarn with transfer tails are produced simultaneously on a winder wherein the winder has a driven friction roll, a dual traversing means with two traverse guides and two bobbins on a chuck and wherein the chuck is positioned adjacent the traversing means and the friction roll is positioned adjacent the traverse guides and against the chuck, by passing two yarns between the traversing means and the friction roll and then between the chuck and the friction roll while holding the yarns approximately in the center of the traversing means and out of the traverse guides; passing the yarns partially around the bobbins on the chuck, and while holding the yarns partially off the surface of the bobbins, passing the yarns between the traversing means and the chuck and again between the chuck and the friction roll; then while holding the ends of the yarns approximately in the center of the chuck, releasing that portion of the yarns held off the surface of the bobbins thereby winding the transfer tails; and

Abstract: A drive arrangement for driving a let-off beam of a fabric weaving loom and maintaining a predetermined tension in the warp threads. The drive arrangement includes an electric motor operably connected to the let-off beam by a speed-reducing apparatus and an electrically operated clutch. A tension-sensitive device is positioned adjacent the warp threads and cooperates with same to sense the tension therein. The tension-sensitive device has a switch operably connected to said clutch wherein at a predetermined tension in the warp threads the switch closes and actuates the clutch to effect selective driving of the let-off beam in a forward direction and thereby control the tension in the warp threads.

Abstract: A double knit fabric having a high relief of small puffs on the back of the fabric and a substantially smooth surface on the front of the fabric wherein said puffs are elliptical in shape and alternate in vertical rows with a depressed portion of the fabric that is double knitted and alternate in a checkerboard pattern with adjoining rows of puffs.