Abstract: The barrel assembly for attachment to a standard driving tool includes a sleeve adapted for attachment to the tool, a barrel retractably mounted in the sleeve and a bushing positioned within the sleeve and extending into a barrel bore. The barrel includes aligned entry and exit trackways to accommodate a strip containing fasteners and the bushing is adapted to position the fastener within the bore of the barrel in a first position and then in a second position engage the strip so as to clamp it in place as the driver disengages the fastener therefrom. A carriage assembly can be positioned within the end of the barrel so as to form an internal restrictive bore for the fastener in a first position and an enlarged bore in a second position so as to permit the fastener to pass therethrough.

Abstract: A power-telephone service pole having a cover which is removable simply by being pried off when the pole is installed so that the telephone compartment is readily available and having a T-bar/tie-rod hanger and a power junction box which cooperate with the removable cover to permit the pole to be quickly installed or relocated together with a pedestal adapting the pole alternately for use on tile or on carpet and for being spotted in position by means of floor studs or screws.

Abstract: A cavity-backed spiral antenna has a plurality of resistively loaded monopole radiators disposed in the cavity in orthogonal relation to the spiral windings to maximize the frequency range of the antenna without increasing the physical size thereof.

Abstract: A very small vertically and horizontally polarized antenna having direction finding capabilities at low microwave frequencies employs filamentary vertically polarized antenna elements and resistively loaded slots for horizontally polarized radiation with a pair of the antennas being employed for direction finding.

Abstract: A stapling device having an outwardly clinching anvil member of spring metal mounted on a detachably fixed nose piece element by an adjusting mechanism comprising a stud extending outwardly from the nose piece element through an exterior keyway therein within which the anvil member is slidably mounted, the anvil member having a cam follower opening therein engageable by an eccentric cam of an adjusting member rotatably mounted on the stud, the adjusting member extending through a backing plate and including a knob portion engaging the same by which the adjusting member is rotationally moved to effect movement of the anvil member in the keyway parallel with the drive track. The backing plate includes an inwardly bent end engaged within the keyway to prevent turning thereof and a locking nut is provided to lock the adjusting mechanism after adjustment.

Abstract: A blind rivet stem extending through a hollow rivet so that it may be pulled, thereby to expand the tail of the hollow rivet; a collar on the stem has a head fitting in a locking groove within the grip length of the stem so that when the tail of the collar abuts a pressure element bearing against the head of the hollow rivet, it is bulged outwardly into a recess in the rivet head, thereby to interlock the rivet stem and the hollow rivet; a weakened portion such as a break groove is provided on the stem adjacent the bulged end of the collar whereby upon further pulling the rivet breaks at said weakened portion.

Abstract: In a vibration reducing system for a single cylinder engine, the rotating inertia forces are balanced while the reciprocating inertia forces are left unbalanced. The engine is mounted on a support by a spring biased linkage system permitting movement of the engine in a direction axial of the engine cylinder. The engine support also includes torsion mounts permitting controlled rotary movement of the engine about the crankshaft axis. Power transmission is through a drive shaft mounted on the support and connected with the engine crankshaft by a belt drive. The supporting linkage is biased to position the engine with the axis of the cylinder approximately normal to a plane defined by the axes of the crankshaft and the drive shaft.

Abstract: The hydraulic actuated power tool includes a barrel having an internal, annular bulkhead separating the barrel into two cylinder chambers. A single piston shaft having two pistons thereon operates within the cylinders of the barrel. One of the pistons is located intermediate the shaft ends and the other is positioned at the terminal end of the piston rod. This latter piston serves as the back wall for the rear cylinder chamber. The piston shaft is ported so that in the power stroke both pistons are being urged rearward, whereas in the return stroke only the forward piston is being acted upon. The porting includes a transverse port extending across the piston shaft and a longitudinal port connecting midway of the transverse port and extending along the piston shaft and terminating in a bifurcated passageway which extends through the forward piston. A floating front wall makes up the end wall of the forward cylinder.

Abstract: There is disclosed a spindle unit for machine tools in which there is a spring operated drawbar in the spindle having finger hooks for engaging the adapter of a toolholder for drawing the latter into a tapered socket at the nose of the spindle with means for locking the finger hooks in engagement with the toolholder adapter and automatically operated means for relieving the pressure of the hooks against the toolholder adapter and providing push rod means to cause the finger hooks to move clear of the adapter and apply a force to the toolholder so that the latter, with the tool carried thereby, may be removed from the spindle socket. The spindle is advanced toward the work and retracted therefrom by a tubular quill provided with a helical groove to cooperate with a ball-nut means formed integrally with a pulley which is connected by a timing belt driven by a pulley on the shaft of a stepper motor, the advancement of the spindle depending on the number of step-like movements of the motor.

Abstract: There is disclosed a tool storage and changing mechanism comprising a rotatable table tool rack having radial sockets to removably hold toolholders, a horizontal arm, forming a track between the tool rack and the machine spindle, carries a mechanical hand having a forked end to receive from the rack and hold a selected toolholder and carry it to and from the spindle. Assuming that the work with the toolholder has been performed, the empty hand travels to the spindle where, without vertical movement of the arm, the hand grasps the toolholder in the spindle which then releases the toolholder. The arm and hand then descend to withdraw the toolholder from the spindle, after which the arm rises again and the carriage travels back to the rack and deposits the toolholder in its rack socket.

Abstract: There are disclosed herein methods for transporting a toolholder between a tool storage rack and a machine tool spindle which include the steps of, in one continuous operation, causing a tool carrier to remove a toolholder from said storage rack and transport the toolholder to the position of the machine tool spindle, causing the tool carrier to be raised to and deposit the toolholder in the spindle, causing the tool carrier while still raised to disengage the toolholder and return to a position remote from the spindle. After the work has been performed by the toolholder, in one continuous operation, advancing the tool carrier to the spindle to engage the toolholder, causing the tool carrier to descend to withdraw the toolholder from the spindle, then be raised and return the toolholder to the storage rack, said reverse operations being caused by reversing the direction of operation of means for supplying power to said tool carrier.

Abstract: There is disclosed a spindle unit for machine tools in which the spindle is rotated by a change speed mechanism comprising a drive sleeve splined and slidable axially in the spindle and a gear shift sleeve slidable with the drive sleeve and having a bull gear adapted in one position to engage a driving gear driven by a motor and in another axial position to cause a clutch element to engage a companion clutch element connected to a pulley also driven by the motor. There are pneumatic means for moving the sleeve to cause the bull gear to disengage said drive gear to free the spindle for independent hand rotation when setting up or adjusting the mechanism. The spindle driving means includes gear shift means to cause the drive sleeve and spindle to selectively rotate at high speed, low speed or be in neutral.

Abstract: A pair of stringers are stitched to opposite edge portions of a seam opening in a tubular garment while the portion of the tubular garment opposite the seam opening is held in front of the stitching station to prevent stitching the front and back or opposite side portions of the garment together.

Abstract: A system for controlling the liquid level in a tank such as a fuel tank. The system includes a main inlet valve and a jet level sensor mechanism. Redundant relay valves which are fluid-pressure responsive are interconnected between the inlet valve and the jet level sensor to cause the inlet valve to shut off when the fluid within the tank reaches a pre-determined level. The inlet of the jet level sensor is connected through a pair of shut-off valves to the inlet valve to thus provide a source of liquid to flow through the jet level sensor. The shut-off valves are connected to be responsive to an over pressure condition which might exist in the tank which is being filled or an over pressure condition at the inlet resultant from excessive fluid pressure at the source thereof.The liquid level control system is modularized by providing a plurality of plate members formed of molded plastic.

Abstract: A multiple station forming press is disclosed for feeding blanks from station to station for successive die forming operations. The transfer mechanism is designed to receive an over-size blank at the first station and to transfer it a greater distance than the actual reciprocating travel of the tranfer bar, by means including an auxiliary carrying block on the transfer bar and drive linkage adapted to move the auxiliary block relatively to the transfer bar.

Abstract: A nail constructed with conventional heading equipment with a notched open-sided partially circular head having a pair of annularly spaced radially extending ribs depending from the underside thereof to permit burr growth without interfering with the interengagement of the downwardly facing abutment surface areas of the rib with upwardly facing mating abutment surface areas of the top surface of the head of an adjacent nail when a plurality of such nails is collated and secured in an angle stick package with the shanks and heads of adjacent nails in abutting relation.

Abstract: A bottom stop for a slide fastener includes tape reinforcing members on opposite sides of each mounting tape joined by a connecting plug extending through a hole in the mounting tape.