Abstract: A stepping type expansion bolt extracting gun, making use of a shifting mechanism to shift a gun barrel by means of a stepping operation, and an arresting and releasing mechanism to prevent the gun barrel from returning. A check plate is provided to control the gun barrel to shift back to the original position. By means of said arrangement, the present invention is applicable to extract the live spindle of an expansion bolt in a labor-saving and most efficient way to replace the linking rod type actuation of the prior art.

Abstract: A tension stringing davit for use in the stringing of power transmission lines between utility poles attaching temporary side guy cables, and maintenance of power transmission lines, is adapted to be mounted directly on an insulator stand-off bracket instead of the pole. The davit comprises essentially a channel-shaped plate providing a rectangular channel to receive and accommodate the lower arm of the insulator bracket, a projecting arm for suspending cable hoisting or supporting equipment, and temporary side guy cables, welded to the underside of the plate, and a gusset plate welded to the front edge of the plate and the top edge of the projecting arm to provide a rigid assembly. The davit is secured to the insulator bracket by means of a pin which extends between side flanges of the channel-shaped plate.

Abstract: A quick-change vise including a T-shaped clamp extending from within a jaw member which engages a T-shaped channel in a jaw blank to releasably secure the jaw blank to the jaw member. The jaw blank may be provided with a parallel bar or angle parallel to provide horizontal or angled supporting surfaces to a workpiece held in the vise. The jaw blank may be positioned in reversible positions on the clamp. Additionally, the jaw blank may be made of an extrudable metal such as aluminum.

Abstract: A tilting apparatus includes at least a pair of elements with curved surfaces arranged to tilt a platform with respect to a base. The apparatus is capable of tilting with a resolution in the order of a fraction of an arc second, with precision, reliability, and repeatability.

Abstract: A staple removing device includes a pair of jaws having portions which are provided at an angle with respect to a corresponding pair of handles. The pair of jaws are pivotable about a common pivot pin. A palm rest extends from a bracket which is attached to a jaw and a corresponding handle. In operation, the palm rest is positioned generally in line with the jaws and a staple to be removed. Additionally, the palm rest is positioned so that an operator can comfortably apply a pushing force thereon with one hand, while gripping the pair of handles with the other hand. The palm rest is further positioned so that a pushing force applied thereto, by an operator's hand, is transferred along a substantially straight line toward a staple to be removed.

Abstract: A clamping device for clamping a fireproof plate into a metal frame of slide gate includes a clamping jaw that can be pressed against the plate perimeter. A wedge-shaped member acts on the clamping jaw and is threaded onto a bolt that is rotatably positioned in the frame. The clamping jaw and the wedge-shaped member have engaging slots and keys that cause positive withdrawal of the clamping jaw upon loosening the wedge-shaped member.

Abstract: A self-deploying stabilizing support jack is presented which stabilizes and positions a recreational vehicle or trailer. The support jack comprises a bracket, a two-cylinder, lift arms and a stabilizing sleeve. The lift arms and cylinder are attached to the bracket at separate, offset first and second points so that when the ram of the cylinder contacts the foot of the lift arm, the entire apparatus is raised to a horizontal position. A stabilizing sleeve attached to the lift and surrounding the cylinder stabilizes the the device from lateral movement. An intermediate third pivot point in the lift arm helps reduce stress upon raising. Also provided is an automatically released pressure valve for the cylinder and a signalling device to warn the operator when the support jack is in the deployed position. A safety circuit also automatically raises any support jack that is not in the horizontal safety position should the ignition be turned to the "ON" position.

Abstract: An apparatus for handling tubing as the tubing is fed to a severing blade for severing into cut sections of predetermined length. The tube handling apparatus includes clamping jaws positioned at the location of the severing blade and a feed tunnel which is arranged rearwardly of the clamping jaws. The feed tunnel includes fingers at its front end which are telescopically received in drilled slots formed on the internal periphery of the clamping jaws so that even very short remnants of tubing occurring after the last full length section of tubing is cut will be maintained in alignment with the tube feed axis by the fingers of the feed tunnel to preclude movement of the remnant tubing into a position of disorientation or dislodgment where it would interfere with the operation of the tube handling apparatus.

Abstract: This arrangement for mounting disk wheels on motor vehicles has at least one sleeve 1 slippable over a wheel bolt 6, a mounting lever being pivotably attachable at the end of the sleeve 1.The sleeve 1 has at least one detachable insert 3, whose outer diameter is adapted to the inner diameter of the sleeve 1 and whose inner diameter is adapted to the diameter of the wheel bolt 6 so that the same sleeve can be used for wheel bolts of different diameters. (FIG.

Abstract: A grinding machine for grinding a tip of a drill bit including a grindstone rotatably provided on a base; a drill bit holder provided on one side of the grindstone, the drill bit holder being pivotable about an axis parallel to the rotating axis of the grindstone and holding the drill bit in an inclined position at a predetermined angle relative to the grinding surface of the grindstone; and a drill bit feeder which moves the drill bit toward the grindstone so that the tip of the drill bit is brought into contact with the grinding surface and ground by the grindstone. If the drill bit holder is pivoted when the tip of the drill bit is brought into contact with the rotating grindstone, the drill bit held by a drill bit presser mounted on the drill bit holder is turned about its own axis so that the tip is ground into substantially a cone shape with a desirable rake angle and rake angle surface.

Abstract: A clamp for holding small workpieces, such as jewelry, is disclosed. The clamp is rotatable and tiltable about a central mounting shaft, and includes hand rests extending transversely from each side of the clamp. The hand rests allow one's hands to be supported and stabilized while performing work on the workpiece, thereby reducing fatigue while also improving stability, accuracy and steadiness. In the preferred embodiment the clamp includes an integral flux cup for facilitating soldering operations.

Abstract: An improved apparatus for directly pulling lines along an extended length of pipe comprising: a projectile positionable within a pipe, the projectile including a shaft having resilient plates and peripheral washers and also having an eye at its trailing end for the receipt of the line to be pulled thereby; a plug positionable within the end of the pipe adjacent the projectile, the plug having circular concentric rings extending from its exterior surface, the plug being split along a plane from its front surface to its rear surface at an angle with respect to the central axis of the plug for facilitating the placement of the plug around the line and then into the pipe, the plug having a length to diameter ratio of about 0.75:1 or greater; and means for coupling the plug to a source of compressed air which may be passed through the plug to contact and move the projectile along the length of the pipe.

Abstract: An apparatus for clamping tire tubes for repair thereof. The apparatus includes a base with a frame extending upwardly therefrom. A mandrel is attached to the upper end of the frame. A vertically movable actuating rod is positioned adjacent the frame and biased downwardly by a spring, the force of which may be adjusted. The lower end of the actuating rod is connected to a foot pedal for overcoming the force of the spring and raising the rod. The upper end of the rod has a yoke assembly connected thereto. The yoke assembly has a substantially U-shaped yoke forming a pair of upwardly extending arms, each arm having a substantially horizontal clamping bar connected thereto. The yoke is preferably at least partially flexible so that the arms will deflect outwardly as a result of the downward force exerted by the spring when the clamping bars engage a tire tube positioned on the mandrel.

Abstract: For use in a machine capable of forming integrated circuits or the like on an odd-shaped, odd-sized semiconductor wafer, an improved chuck assembly, for increasing the rotational adjustment capabilities of the chuck assembly and a semiconductor wafer supported thereon. The chuck assembly comprises a mounting ring having a circular configuration formed of a plate and a peripheral wall forming a circular recess extending from a surface of the mounting ring. The chuck assembly also comprises a chuck plate having a circular configuration adapted to be received within the recess of the mounting ring. A lever extends radially from one edge of the chuck plate through an opening in the side wall of the mounting ring. An adjusting bracket is secured to the exterior edge of the mounting ring.

Abstract: The present invention provides a three-piece telescoping jack that is capable of rapid coarse adjustments in height. The invention comprises first, second and third elongated tubular members that are somewhat nested in a telescoping relationship. The invention further comprises fine adjustment means for holding and adjusting the position of the second member in relation to the first and coarse adjustment means for holding and adjusting the position of the third member in relation to the second. The coarse adjustment means further allow the position of the third member to be rapidly adjusted, either retracted or extended, in relation to the second member. In a preferred embodiment, the fine adjustment means are a threaded nut and bolt. Also in a preferred embodiment, the coarse adjustment means are a pin and a series of holes in the second and third members.

Abstract: A fixture includes a base having an index surface. The index surface has a reference hole, 360 positioning holes formed about the reference hole and angularly equally spaced from each other at an interval of one degree, and a plurality of fastener holes formed through the base around the positioning holes. A reference post is inserted removably into the reference hole for abutment of a workpiece thereon. A positioning post is inserted removably into selected one of the positioning holes for abutment of the workpiece thereon. A press member is inserted removably into selected one of the fastener holes and is adjustable to press the workpiece against the indexing surface of the base for holding the workpiece on the base, so that a diagonally provided part of the workpiece to be cut is in parallel with the movement direction of a movable work table.

Abstract: A device to facilitate open windows comprising a lever arm with a delta shaped lead edge and incorporating a pivot pin; and a frame with a series of notches to receive the pivot pin at selectable fulcrum points. Both the delta shaped lead edge of the arm and the bottom lead edge of the frame are rounded to "roll", allowing steady, continuous pressure on the window sash throughout the opening process.

Abstract: A kind of vise comprising a back jaw and a front jaw which are separately provided with a plurality of different jaw faces corresponding to one another for pinching different shapes of things or material, the faces are changeable in their position by turning for choosing the most proper one for pinching a thing to be worked on. A punch set on the screw is also able to punch a hole.

Abstract: The invention provides a pinning table for fabric stacks of the type including:an upper fixed platen provided with openings, and intended to receive the fabric;a lower movable platen, parallel to the upper platen;a plurality of pins adapted to be introduced into said holes in the upper platen, and connected to said lower platen; andmeans for imparting a translational movement to the lower platen with respect to the fixed upper platen, in a direction perpendicular to said platens, wherein said lower platen is formed from at least a first and second superimposed plates each having a plurality of orifices arranged identically and corresponding to the openings in said upper platen, and in which the pins are introduced, at least one of said plates being slidable, in a limited way, with respect to the other plate through actuating means.

Abstract: A vice has a base fixed to the worktable of a machine, a slider slidable on the base and a fixing-releasing mechanism for selectively fixing the slider to the base and releasing the slider from the base. The fixing-releasing mechanism is provided with an actuator extending through a large hole formed in the base and engageable with the base and the slider. When not applied by pressurized fluid, the actuator fixes the slider to the base, and when applied by the fluid, it releases the slider from the base for the positional adjustment of the slider. The vice also has a piston-cylinder assembly composed of a cylinder tube and a piston assembly slidable in the cylinder tube and surrounding a lead screw in a telescopic manner. When applied by pressurized fluid, the piston assembly as well as the lead screw advances to move a movable clamp element on the slider towards a stationary clamp element fixed on the slider, for clamping a work between both the clamp elements.