Abstract: This invention relates to a duplicating grinding machine for grinding workpieces of irregular three-dimensional shape, wherein a model and at least one workpiece are mounted side by side in spaced parallel relation to one another between clamping devices so as to be synchronously rotatable about their longitudinal axes, said model and each of said workpieces having associated therewith two carrier arms each, one carrier arm associated with said model and at least one carrier arm associated with said workpiece being interconnected to form a unit and adapted to be brought into pressing engagement with said model and said associated workpiece, respectively, with one carrier arm of a first interconnected unit carrying a scanning roller for scanning said model and adapted to be translated along the length of said model and each other carrier arm of said first unit carrying a motor-driven belt grinding assembly having an endless grinding belt looped around a return roller and a contact roller, and with one carrier

Abstract: An exhaust gas return valve actuating rod has first and second rod portions adapted for connection between an exhaust gas control valve and throttle linkage. The rods are interconnected by an eccentric connecting element which is spring connected to one of the rods and connected by a thread connection to the other rod. The eccentric connecting element enables convenient length adjustment of the connecting rod, even when it cannot be seen by the mechanic.

Abstract: A prefabricated approximately T-shaped blank of flexible sheet material with a pair of screened openings spaced apart from one another in the longitudinal portion of the blank is foldable along spaced parallel folded lines into a flat trap structure composed of outer and inner arch-shaped walls with screened skylights therein, the inner screened skylight having a small exit port therein. The structure thus formed has a floor panel with approximate arch-shaped side wings foldable upward therefrom into end closures for the structure, these wings containing small entrance doors near their fold edges. The screens are cemented to the border areas around their respective openings and these cemented areas covered by pairs of half-I-shaped border flaps integral with the blank and folded therefrom over the cemented areas.

Abstract: Small-diameter vitreous cylinders, for example glass tubes, are maintained under lateral (radial) compression and are precision rolled through grinding wheels, thus fully separating the cylinders into as many cylindrical components as desired. The rolling is effected by maintaining several glass cylinders in laterally-adjacent relationship between a drive roller and a pressure sheet, the latter being under very substantial tension. Thin grinder wheels extend through slots in the pressure sheet and thereby grind completely through the rolling cylinders. The drive roller and pressure sheet continue to roll the substantially separated cylinders, in precise synchronism, so that there is no breaking but instead only grinding.

Abstract: A low-friction, axially extensible strut, automatically lockable in both tension and compression, for use as a secondary load path in helicopter main rotor force measurement systems.

Abstract: The grinding machine is of the type adapted for grinding a workpiece having a surface of revolution such as a taper or barrel roller of a rolling element bearing. The two end faces of the workpiece are clamped between adjacent ends of two mandrels which are rotatable about a common axis. The adjacent ends of the two mandrels are formed with respective noses for effecting the clamping of the workpiece. One nose is formed with a seating in the form of a flat face or a concave surface of revolution the axis of which is coincident with the common axis of rotation of the two mandrels. The other nose is provided with a cavity having a tapered opening through which a spring loaded ball partially protrudes.

Abstract: A lightweight transversely pivoting and longitudinally sliding skate carriage exhibiting exceptionally low friction, introduces a high degree of sensitivity into the process of skate sharpening, facilitating very light grinding cuts and low uniform traversing speeds, enabling a relatively unskilled operator to produce superlative surface finishes and accurately maintain the blade "rocker" profile. The carriage pivotal axis is so located and the skate blade so positioned that the "hollow grind" is accurately centralized throughout the length of the blade. The low friction, pivotal provision enables the blade to be held in sensitive contact with the cutting wheel controlling the depth of cut, while the longitudinal sliding provision permits sensitive control of rate of cutting lengthwise along the skate blade. The skate carriage is readily removable and being lightweight facilitates inspection of the blade surface during the course of sharpening.

Abstract: A minnow rig and a method of baiting the minnow rig with a live minnow for stream fishing and trolling. The minnow rig includes a treble hook adapted to be disposed in a minnow's tail, a second hook adapted to be disposed in the minnow's head, and a single line connected to and extending between the hooks. The first hook is connected to a free end of the line, while the second hook is connected to the line for allowing adjustability of the second hook with respect to the first hook while still allowing the second hook to be held in a fixed predetermined relative position with respect to the first hook if desired. The second hook is held to the line without knotting of the line and without the necessity for a separate securing device.

Abstract: A centerless grinder is adapted to have a regulating wheel feed towards a grinding wheel about a pivot point to accomplish an infeed grind operation on a plurality of parts between the wheels. The parts are infeed ground at a plurality of stations from an inlet end of the wheels to an outlet end of the wheels, and the pivot point is proximate the outlet end, thereby achieving variable feed distances and variable feed rates along the face of the regulating wheel relative to the grinding wheel, from the inlet end to the outlet end. After an infeed grind operation, the plurality of parts are advanced to their next adjacent stations for a subsequent grind operation. By the arrangement disclosed, coarse-feed grinding is performed on one workpiece while fine feed grinding is performed on another piece and varying degrees of rates of grinding are performed on the intermediate pieces during the same time interval.

Abstract: An actuator for a rotating frame animal trap having two similar frames pivotally connected to each other. The actuator comprises two arms spring biased at one end and each terminating in a ring at the other. The rings have the dimensions so that the actuator can be mounted on the trap to encircle adjacent ends of both frames of the trap. On release of the trap, the actuator can rapidly and forcefully effect a rotation of the trap to its closed position. A rigid joint is formed in one arm of the actuator. The joint is breakable to separate the one arm by application of a force to the spring biased end of the actuator. The actuator does not affect the position of the set trap and is simple in construction.

Abstract: A bur grinding machine especially adapted to grind dental burs and including a turntable supporting a plurality of similar workheads having collets to support bur blanks; a plurality of grinding units mounted on a stationary base in circumferentially spaced locations around the periphery of said table and respectively operable to perform different grinding operations in sequence upon the heads of bur blanks; means to index, rotate, and advance the collets of the workheads automatically at each grinding unit to form a plurality of teeth upon the bur blanks; means to index said table to advance the burs in the workheads to the next grinding unit; means to feed and accurately position bur blanks within the collets of the workheads; and means to control the cycle of the machine throughout.

Abstract: An adjustable wrench having a shank forming a handle and provided with a fixed jaw toward and away from which slides a movable jaw mounted on the shank. The movable jaw is selectively locked in a desired position relative to the fixed jaw by a lock arrangement including a latch disposed on the shank for movement substantially relative to the movable jaw and provided with teeth which can engage teeth provided on the movable jaw.

Abstract: A support is provided and a rotary grinding head is journaled from the support for rotation about a first predetermined axis. A support arm is pivotally mounted at one end from the support for swinging of the support and support arm about a second axis substantially paralleling the first axis and the other free end portion of the support arm includes structure for supporting a saw chain therefrom for successive positioning of the cutting teeth of the chain in predetermined position for sharpening by the grinding wheel. As a result of relative swinging of the support and the support arm, the rotary grinding head is swingable into registry opposite side portions of the supported saw chain. Also, a chain tooth engaging and positioning member is supported from the support arm for establishing the predetermined position of the tooth to be sharpened and is swingable into and out of an operative position.

Abstract: A grinding tool for the inside of cylinder has a motor driven stem carrying a hub on which is a notched hub member detachably securing ends of three flexible legs. A shoe having a fixed grindstone is pivotally attached to each of the legs and is releasably held by a spring clip. A sleeve surrounds the hub member to help hold the legs in place. A nut secures the sleeve on the hub member. An annular flange is loosely fitted on the hub and is held by the nut to serve as a stationary hand grip while the remainder of the tool rotates.

Abstract: A cam grinding apparatus has a base member, a rocking bar rockably mounted on the base member, a master cam shaft rotatably mounted on the rocking bar, and a drive motor for driving the master cam shaft in rotation. A cam shaft to be ground is supported by the master cam shaft so as to have the cam section thereof ground by a grindstone while being rocked by the rocking bar and rotated by the master cam shaft. There is provided at least one device for detecting the rotational angle of the drive motor and for detecting the phase angle of the rocking bar.

Abstract: A flat clamp plate is fastened to an instrument panel of a vehicle body. A clamp attachment with a top panel is fixed to a telescopically movable part of the steering column and is in slidable engagement with the clamp plate through a hook connection at the front and rear ends thereof. The clamp plate and the clamp attachment are fastened together by means of shear pins which are breakable under a predetermined shearing stress.

Abstract: In a cam grinding machine, first and second support means are mounted on a first surface of a traverse table for swingably supporting a swing table at opposite ends thereof. A third support means is arranged between the first and second support means and mounted on a second surface of the traverse table. The second surface is lower than the first surface. A shaft is rotatably supported by the third support means and a tightening means is provided for fixing the opposite ends of the shaft into bores formed on inside walls of the swing table.

Abstract: A surfacing or finishing machine for precision machining of a workpiece which includes a grinding wheel or edging tool installed on a working spindle, a driving motor for rotating the working spindle, and a power transmitting system for transmitting power from the driving motor to the working spindle. The power transmitting system includes a flexible link mechanism fashioned of a number of link belts or the like interconnected in series by a number of rotatable pulleys. The driving motor and power transmitting system are so arranged with respect to the surfacing and finishing machine that the working spindle is isolated from adverse vibrations which result from the operation of the driving motor and power transmission system.

Abstract: A honing assembly comprising a hollow head or shell provided with a plurality of circumferentially spaced slots, honing elements projecting from said slots, and an adjusting member longitudinally adjustably supported within the head. The adjusting member has longitudinally tapered surfaces provided with elongated undercut grooves. The honing elements have studs shaped to fit the grooves so that longitudinal movement of the adjusting member will cause radially inward or outward movement of the honing elements depending on the direction of movement of the adjusting member.

Abstract: Internal grinding machine having wheelhead mounted on an elongated cylindrical bar whose axis extends parallel to but substantially spaced from the axis of the abrasive wheel, the bar being mounted in bearings and the relative movements of the wheelhead for producing a grinding cycle being accomplished by rotation of the bar about its axis and by longitudinal motion of the bar along its axis.