Abstract: An expendable jaw combination for use in connection with a chuck for a lathe, milling machine, or the like to hold work stock. A receiver member is attached to the chuck, and an engagement member is provided in an elongated recess in the receiver member for engaging the stock. The receiver member is preferably constructed of tool material, such as tool steel, while the engagement member may be made of a lower cost material which is easier to work, such as mild steel. After the engagement member is used one or more times, it may be reworked or expended. Locking means are provided for securing the engagement member to the receiver member during use.

Abstract: A chipping machine having an elongated, rotatable chipping member, the chipping member having at least one cutting blade and defining at least one blade opening adjacent the cutting blade. A paddle is provided on the chipping member which is associated with the blade opening and which extends radially with respect to the axis of rotation of the cutting member. The paddle preferably includes a tapered-in portion tapered inwardly toward the axis of rotation of the chipping member. A discharge chute is provided for receiving the chips cut from the article by the chipping member. The discharge chute preferably includes a generally semi-circular portion having a diameter greater than the chipping member and defines a chip path volume of generally semi-circular cross-sectional shape.

Abstract: A reduction system using water pressure and vacuum excavation and including a water supply tank, water pump, vacuum pump, slurry collection tank, a system for tilting the collection tank, handheld reduction tool, and a drive system. The reduction tool, or wand, is used to deliver high pressure fluid, such as water, to the ground in order to loosen soil directly in front of the tool. The tool includes diametrically opposed nozzles which are angled with respect to one another such that pressurized water delivered from the nozzles is directed in a fashion to slice the ground in a generally spiral or helical fashion as the tool is pressed downward into the ground. As the soil is loosened by the pressurized water delivered from the nozzles, the loosened soil is sucked away to form a hole in the ground, and such loosened soil (a slurry when mixed with the water) passes upwardly through the tool in a vacuum air-flow created by the vacuum pump and is deposited in the slurry collection tank.

Abstract: A combination machine for trenching, for forming the edge of a bed, and for laying and burying tubing, cable, piping, and the like. The machine includes steerable caster wheels mounted on the rear of the machine which, together with a single front wheel, allow for a tight turning radius when using the machine. The machine also includes a blade height adjustment which allows for the trenching or edging blade depth to be readily adjusted in a substantially infinite variation. An edging blade is provided which when used with the machine forms a groove at the bed's edge for the laying of irrigation lines, or lines for herbicide, pesticide, and/or fertilizer for use in connection with the bed.

Abstract: A high temperature industrial door having a flexible door plate with notches about the periphery thereof for receipt of swing bolts. The door plate includes interior insulation and is suspended from and hinged to a door frame using a davit assembly. In the closed position, the lower edge of the door extends below floor level. To open the door, the davit assembly allows the door to be lifted above floor level and moved to an open position, by pivoting of the davit assembly.

Abstract: Spring-assisted folding knife designs having a coil spring, cable, and spool arrangement for pivoting a blade from a retracted position to an extended position. Activation of the spring system can be accomplished a pushbutton mounted on the side of the knife's handle, or through depression of a locking lever carried on the back side of the handle. Once moved to the extended position, the blade is automatically locked in that position through the pushbutton mechanism in one embodiment, or, in the other embodiment, through a liner lock.

Abstract: A folding knife having a handle and a blade attached to the handle, the blade being connected for movement between a retracted position and an extended position with respect to the handle, and the blade a first locking profile, such as a notch. A locking member is provided having a second locking member, such as a projection, the projection being configured to be engageable with the notch when the blade is in the extended position. A pivotal connector is connected to the handle and to the locking member for allowing the locking member to pivot with respect to the handle. The locking member is movable between a locking position, wherein the second locking profile is in locking engagement with the first locking profile for locking the blade in the extended position, and an unlocking position, wherein the blade is movable with respect to the handle.

Abstract: A brace for use by a shooter to brace a gun having an elongated stock and a butt portion. The brace includes a generally upright member connected to the stock of the gun and is configured for contacting the back portion of the user's head or neck and for bracing the gun there against while the user holds the butt of the gun against the user's shoulder. A telescoping arm is pivotally connected to the stock of the firearm adjacent the butt of the gun. The arm is pivotable between a retracted position adjacent the stock and an extended, operable position above the stock. A brace pad is connected to the end of the arm, and the brace pad is spring-biased to pivot outwardly for contacting the back of the user's head or neck.

Abstract: A cam and follower system for use with an automatic doffing system of a rotor spinning machine. The system includes a cover member for covering the cam lobes of a cam gear found in the automatic doffing system of a rotor spinning machine. The system also includes a cam follower for connection to the automatic doffing system. The cover member has cam surfaces which are complimentary to and which act to renew the original cam surfaces of the cam gear's cam lobes. The cam follower is adapted to engage and ride upon the cover member's cam surfaces during operation of the automatic doffing system.

Abstract: To provide a method and device with which Alternate Twisted Yarn can be produced simply and inexpensively. An Alternate Twisted Yarn is produced by alternately repeating with a neutral and tilt switching method and twisting yarn 1 in the reverse direction on both sides of pulley 2 driven by yarn 1 that is inserted between the flanges of pulley 2, so that the yarn passage is bent or flexed. Shaft 3 of this pulley 2 is inclined to the yarn 1 yarn passage plane to bring yarn 1 into contact with the flange section 2a's internal surface of pulley 2, and in the neutral position under which yarn 1 is not twisted on both sides of pulley 2, with shaft 3 of pulley 2 being made perpendicular to the yarn 1 yarn passage plane to cut off its contact to the pulley 2 flange section 2a's internal surface.

Abstract: Metallic clothing having metallic wire teeth bent at a double angle. The lower portion of each tooth is angled by an first angle with respect to vertical, and the upper portion is angled at a second angle with respect to vertical. The upper portion terminates at the tip, or point, of the tooth. This double-angle tooth profile is angled in the direction opposite to the general direction of travel of fibers being carded. The upper side portion of each tooth is tapered inwardly to the tip, and the rear edge of the upper end of each tooth may be provided with a forward curvature towards the point of the tooth. Alternate embodiments include single angled teeth and a double-angled teeth, each having a base portion substantially the same height as the teeth and teeth having serrated side portions.

Abstract: A hot water heater of a low profile, box-shaped design, with the height and width remaining generally constant, and the length being dependent on the volumetric capacity desired for the water heater. The water heater is configured for horizontal configuration or vertical mounting and includes a cold water inlet for allowing input of cold water into a lower compartment. A baffle plate divides the lower compartment from an upper compartment, and water from the cold water inlet flows through a baffle opening, or delivery outlet, into the upper compartment. While in the lower compartment, the water is subjected to heating by at least one heating element, which serves to pre-heat the water. As the water flows to the upper compartment, it is heated further by at least one additional heating element located in the upper compartment.

Abstract: A water sports device adapted for carrying a rider airborne completely above the surface of the water upon being towed by a tow device. The water sports device comprises an elongated airfoil having a top portion and a bottom portion substantially opposite the top portion, the top portion being adapted for supporting the rider thereon. At least one tow connector is attached to the elongated airfoil, and the elongated airfoil is of a shape which causes it to receive an upward lift reaction from an airstream moving relative thereto upon being towed by the tow device. An elongated spar is provided within the airfoil to which the tow connector is attached. The interior support of the airfoil is, in one embodiment, polystyrene, such as Styrofoam.RTM. and the exterior surface is fiberglass. Alternate embodiments include the provision of pontoons under the elongated airfoil, and the attaching of at least one operable aileron, rudder, and/or at least one downwardly extending fin to the elongated airfoil.