Abstract: A carrier takes up a gin saw blade blank from a magazine stack, swings the blank to position over a collet chuck on a continuously rotating vertical spindle, and places the blade on the chuck. The chuck is actuated to clamp the blade thereto and the chuck is shifted laterally to move the blade into cutting engagement with a cutter wheel having peripherally spaced teeth. The chuck drive includes a yieldable mechanism to permit intermittent stopping of the blade as the cutter teeth pass through. After the cutting cycle, the chuck is again moved laterally to the load-unload position; and an ejector removes the blade from the chuck, after release by the chuck, and carries it to a storage spindle for finished blades. During the cutting cycle, the carrier is moved back to its position over the magazine to pick up a succeeding blank for deposit on the chuck. Apparatus functions are performed by air cylinder motors controlled by a bank of air valves operated by cams on a common cam shaft.

Abstract: A file guide for use in sharpening a chain saw having a bar, a chain around the periphery of the bar, and a plurality of teeth secured at intervals along the chain, each tooth having a cutting edge at one end thereof constituting its forward end. The file guide comprises a frame adapted to be mounted on the bar of the chain saw, a carriage slidably mounted on the frame for forward and rearward movement relative to the tooth to be sharpened, and a stop carried by the frame for holding the tooth against rearward movement. The carriage has a pair of guide members guiding a file for reciprocation at a predetermined angle relative to the tooth through a cutting stroke of the file for sharpening the tooth at the predetermined angle and a return stroke. The guide members are disposed on opposite sides of the tooth and are spaced longitudinally of the carriage.

Abstract: An arrowhead sharpening device comprised of two cylindrical, untapered files positioned with their longitudinal axes parallel to one another and their surfaces in contact so that a V-shaped trough is formed between them. Each blade of the broadhead arrow is sharpened by holding the arrow shank and placing the edge of the blade in the V-shaped trough and drawing the arrow toward the user.

Abstract: A tool for preloading a marine riser connection having a first member, a second member and a nut having a lug extending therefrom, the connection being made up by rotating the nut with respect to the first member so as to place the nut in tension, such tension operating to hold the first and second members together in compression, is disclosed. The tool includes a lug holder for holding the lug, a block for engaging a reference member attached to the first member, and a device for forcing the lug holder and block apart so that the nut is rotated with respect to the first member.

Abstract: A tool holding device for holding a cylindrical barrel in a cylindrical chamber which includes a two-part barrel with the parts axially oriented having facing chamfers to form a V-groove which receives a split ring. The retaining barrel has a rearwardly facing shoulder which form an annular abutment for the periphery of the ring when the ring is expanded by drawing the parts of the barrel axially toward each other.

Abstract: An improved flying cut-off machine is disclosed of the type in which a ram is supported for swinging movement induced by a ram actuating mechanism so as to operate a cut-off die set to cut off lengths from an elongated workpiece continuously emanating from a tubing mill. The improvement comprises the provision of an adjustment member included in the ram actuating mechanism which is interposed between connecting rod end members, one of which is pivotally connected to a motor driven crank and the other pivotally connected to the swinging ram. The adjustment member comprises a shaft having oppositely threaded ends threaded into the connecting rod ends so that a length adjustment can be made to the connecting rod, which in turn provides a simultaneous adjustability feature to both the vertical stroke and shut height of the ram produced by the crank rotation so as to adapt the apparatus to variously configured die sets having differing shut heights and strokes.

Abstract: The invention relates to cutters, and provides a cutter comprising a base and a cutting-blade carrying arm. The base and the arm may be parts of a one-piece plastic molding which incorporates a connection between the base and the arm, which connection permits movement of the arm relative to the base during the cutting action. The arm may carry at least one flexible member which engages the material to be cut prior to engagement of the material by the cutting blade, whereby the material is restrained from movement during the cutting action.

Abstract: A portable sawmill including a log positioning section, a log sawing section and a drive for the log positioning section and the log sawing section; the log positioning section including a supporting frame with an inclined face and a conveyor disposed along the inclined face; the log sawing section including a substantially flat log bed, a first conveyor for moving logs along the bed, a first saw assembly including at least two saw blades rotatably mounted on a common horizontal drive shaft disposed below the log bed, means for adjusting the spacing between the saw blades, at least two vertically disposed guides positioned adjacent the delivery area of the saw blades, and means for adjusting the spacing between the guides, a second saw assembly including a plurality of saw blades rotatably mounted on a common vertical drive shaft disposed adjacent to the log bed, a second conveyor located adjacent the delivery area of the plurality of saw blades, and the drive including controls for independently actuating th

Abstract: A tool assembly for use with a prime mover, such as a bench press, to prepare a flat cable for its termination in a mass termination connector. The assembly includes upper and lower supports, at least one of which is adapted for attachment to the prime mover, for reciprocal movement relative to one another. The assembly further includes punch means carried by one of the supports, cutter means carried by one of the supports and selectively operable stop means for limiting relative movement of the supports. The punch means forms a series of windows in the cable insulation between adjacent conductors of the flat cable, the windows being aligned in a row extending transversely of the longitudinal direction of the cable. The cutter means severs the conductor of the flat cable adjacent the windows. The punch means extends further toward the support which does not carry the punch means than the cutter means extends toward the support which does not carry the cutter means.

Abstract: A band saw attachment releasably secured to the quill of a vertical milling machine and driven by the rotary spindle of the machine is movable with the quill generally toward and away from the work-support surface of the machine table and may be tilted with the quill and relative to the support surface to provide clearance between one portion of the saw blade and the work-support surface. Blade guide rollers are mounted on the attachment to twist a portion of the saw blade to a normal position relative to the work-support surface when the quill is tilted relative to the support surface.

Abstract: A glass scoring head has pressure rollers which engage the glass on either side of the scoring wheel to compensate for variations of flatness in the glass, and the scoring wheel is pendulously supported so that it can score in one and an opposite direction without moving the head on the associated bridge structure. The means for so supporting the scoring wheel also includes novel means for rotating the pendulum support itself to permit scoring in mutually perpendicular directions, both of which directions are also reversible as a result of the pendulous mount.

Abstract: Key switches are connected in a matrix fashion between row lines making block lines for octaves and column lines making note lines for notes. The note lines are connected to a note detection circuit which converts the note line outputs of the actuated switches into key codes in a time shared fashion and to a chord detection circuit which includes a chord type detecting logic and a shift register connected thereto and storing the note line outputs in its respective stages. During a chord detecting period, the note detection circuit is loaded with signals "1" as if all the key switches were actuated and delivers key codes of all notes one after another, whereas the shift register is circulatingly shifted synchronously with the note code change. When the logic detects an establishment of a chord, the note code of that moment is extracted to be a code identifying the root note of the chord. The root note code is then processed for automatic bass and chord performance.

Abstract: In order to tune the frequency characteristics of a filter or oscillator as an exponential function of the position of a note on a musical scale, a pulse stream with an exponentially scaled duty cycle is used to gate an on-off switch which controls an electronic tuning signal for the first or second stage of the filter or oscillator. The pulse stream source can be a pulse code generator responsive to a priority note generator, or it can be an oscillator-driven one-shot with an exponentially scaled power supply governing the charging rate of a reactive component which determines the one-shot cycle time. There are also pitch offset and pitch modulation features in the circuit, the latter being usable in a constant deviation or a constant interval mode.

Abstract: A multiple pitch generator, in particular a chime generator, incorporated in an electronic organ of the multiplexed variety wherein the keyboard is scanned and a cyclically recurring serial data stream produced wherein keydown pulses appear in time slots corresponding to depressed keys of the keyboard. The chime generator produces a plurality of tones in response to the actuation of a single key of the solo keyboard, for example, wherein the tones are those necessary to closely simulate a chime sound. This is accomplished by sequentially passing the serial data stream containing the keydown pulse through a series of shift registers which insert in the data stream pulses in subsequent time slots corresponding to the next three lowest tones making up the chime.

Abstract: A musical instrument such as a guitar or piano has a plurality of elongated strings maintained under longitudinal tension and bearing through a bridge on a sounding element. This sounding element is subdivided by a plurality of slots into a plurality of sections each bearing against a respective one or more strings and each carrying on its outer faces at least one strain gauge. The strain gauge is extends between the respective string and the sounding element, with its direction of sensitivity perpendicular to both. Such a strain gauge is therefore used as an electronic tone pickup for the string instrument.

Abstract: An optical tone generator comprises sensing means responsive to light of different respective colors for selectively producing respective output signals corresponding to such respective colors, and a tone generator responsive to the sensing means for emitting a tone corresponding to the signal produced by the sensing means. In a preferred embodiment, fiber optic light conduits are disposed within an elongated baton for manual translation along a line of discretely changing colored strips to produce tones corresponding to the various colors. This device is particularly advantageous for teaching musical composition because it permits a child to vary pitch, duration and tempo by readily perceived variations in color, length and speed, respectively.

Abstract: The disclosure describes improved apparatus for use in an electronic musical instrument having a keyboard including a group of keys corresponding to the notes of a musical scale. Electronic circuitry is used to generate simultaneously with respect to each of the keys first and second electrical tone signals, the repetition rates of which are detuned with respect to each other so that the sound of a chorus is simulated.The disclosure also describes circuitry useful in an electronic musical instrument having a keyboard including twelve keys corresponding to the twelve notes of a chromatic musical scale. The circuitry generates simultaneously a first series of twelve tone signals corresponding to a first tempered scale and a second series of twelve tone signals corresponding to a second tempered scale different from the first tempered scale.

Abstract: Both finger and foot operated, electrical keyboards supply current through connectors to fret selecting devices which are mounted on fretted, stringed, musical instruments, said devices being guided in an array of note and chord formations so that notes and chords are formed when the devices are activated.

Abstract: A pick or plectrum having a plurality of rounded corners each adapted for selectively engaging the strings of a musical instrument and each having a degree of flexibility different from that of the others. Resilient plastic is molded into a single piece with holes adjacent at least two of the playing corners with the holes being of different sizes so that the playing corners have different flexibility.

Abstract: A device to facilitate playing a mouth blown harmonica comprising a body with a plurality of flaired air channels which extend from registry with the harmonica blow holes to the outer periphery of the body. That periphery is shaped to fit the mouth of the user so that a single channel can be easily used at any one time.

Abstract: One or more deadening elements are in contact with the underside of the drum head and are connected to a foot operated mechanism which moves the deadener or deadeners across the drum head thus varying the effective resonating area of the head so that the drum can be tuned while playing. As an example, the drum tuning can be changed from a bass drum to a concert tom. The preferred embodiment includes a pair of opposed, curved deadeners which are moved towards and away from one another in concentric relationship with the drum head.

Abstract: An upset bolt provided with a pressure formed recess on the bolt head. The recess is formed by the combination of three separate surfaces, that is, concave, convex and flat standing surfaces which respectively form lower, middle and upper portions of the recess. By virture of provision of the concave and convex surfaces respectively in lower and middle portions of the recess, stress concentration occurs in the region along the concave and concave surfaces when the recess is pressure formed. Since the region of stress concentration is positioned away from the neck portion of the bolt body, the breaking strength is remarkably increased as compared with conventional upset bolt in which the stress concentration occurs in a region near the neck portion of the bolt body.

Abstract: A recess for fasteners such as screws, bolts and the like having, in axial alignment with the shank, a central recess of a conic-frustum shape which serves as a natural center for a driver tool or for a drill bit if it becomes necessary to drill out the fastener. The wrenching elements consist of a plurality of truncated conic segments having their common center line axis coincident with the central recess. The wrenching walls for loosening lying in a plane containing the center line axis of the fastener while the walls for tightening being sloped toward the tightening direction to provide for torque limiting.

Abstract: A press type ammunition loader in which the casings are sequentially advanced through a series of work stations by means of a shuttle bar which is reciprocated along the line of the work stations and also moved laterally into and out of engagement with the casing series. A simplified shuttle bar operating arrangement is disclosed including a cam actuated hitch-index shuttle cooperating with other shuttle bar operating components operated by reciprocal movement of lower and upper platen plates which also operate the respective loader components at each work station. The shuttle bar advance and return movement is executed while engaged with C-form springs, maintaining an inward bias force. The upper and lower platens are reciprocated by rotation of a crank-link assembly, which also operates a primer feed slide mechanism, by means of a cable and pulley drive moving a primer slide bar between primer pick up and seating positions.

Abstract: A piston for use with a rotary piston rod or so-called rotary piston can be constructed so as to utilize a solid sleeve-like piston body of a material selected from the group consisting of structural carbon and graphite. This piston body is utilized around an elongated, tubular center member which has openings extending to the interior of the piston body for the purpose of conveying hydraulic fluid so as to lubricate the piston body to facilitate relative rotation of the piston body relative to the sleeve. Appropriate grooves holding elastomeric fluorocarbon sealing rings are located in the piston body and holding structures are provided for holding the piston on the sleeve. The piston is particularly adapted for use in machines for use for cleaning tubes and pipes.

Abstract: An improved seal is disclosed for hydraulically sealing a piston-cylinder assembly used in activation of a floating caliper disc brake. The improved seal comprises an annular groove circumscribing the cylinder wall within which a ring type elastomeric seal is seated so as to sealingly engage the piston. The floor of the annular groove has a flat portion and sloped portion. By varying the ratio of the flat portion to the sloped portion a desired axial force resisting retraction of the piston into the cylinder may be pre-determined thereby preventing excessive brake shoe drag upon the rotor.

Abstract: A cast light metal piston has a plurality of longitudinally extending reinforcing members. These reinforcing members may be disposed at predetermined positions in the piston as cast and are designed to impart a compressive stress to the material of the piston in the regions where the reinforcing members are located. Conveniently, the reinforcing members may be located adjacent the opposite sides of each of a pair of gudgeon pin holes provided in the skirt of the piston.

Abstract: A method and apparatus for removing longitudinal gussets from a flat tube of flexible material, such as paper, including a conveyor for conveying the flat tube along a guide path to a gusset removal station having means operative to separate opposite side panels of the flat tube at their leading edges while simultaneously effecting a drag on one of the side panels as one of the forward leading edges enters the nip of feed rolls so that the gussets are removed and lie substantially coplanar with the opposite side panels of the tube to enable subsequent forming of cuffs at one end of the tube preparatory to replacing the gussets and closing the opposite end of the tube.

Abstract: A roof structure for a building having end walls and side walls, the structure providing reduced air conditioning loads for the building, the roof having spaced apart purlins, roof sheeting affixed to the top edge of the purlins, ceiling sheathing affixed to the bottom edge of the purlins providing plenum areas between adjacent purlins and between the roof and ceiling sheathing, vents at one end wall providing means for entrance of outside air into one end of the plenum areas, and fan means connected with the plenum areas to draw air through the plenum areas and discharge it exteriorly of the building, thereby cooling the plenum areas and reducing the effective heat load of the building ceiling.

Abstract: An apparatus is provided for cooking frozen french fries in which a supply of frozen potato pieces is held in a hopper and in which the potato pieces are continuously fed from the hopper at a predetermined, adjustable rate, by means of an upwardly slanting endless conveyor, into an enclosed bath of hot cooking liquid. Water vapor generated when the frozen potato pieces contact the hot liquid is removed by a vapor extraction system. A second endless conveyor is provided within the cooking liquid to carry the potato pieces submerged within the liquid while being cooked. The speed of the potato pieces through the cooking liquid is continuously adjusted, in response to cooking liquid temperature fluctuations, as necessary to provide french fries consistently cooked to the same degree. The french fries are automatically discharged from the apparatus.

Abstract: A pie crust shaper for a bottom pie crust comprising a flat, integrally formed open bottom section having a central area from which a plurality of radial spokes extend outwardly to a concentric circumferential band. Around the circumferential band are rotatably fastened a plurality of flat, substantially A-shaped flaps. The pie crust shaper is provided with a plurality of punched out pricking elements where it contacts a pie crust, as well as a central ring for purposes of handling the pie crust shaper. The device can be formed of metal, or of other materials such as plastic which are transparent to microwave radiation.

Abstract: Device for the extraction of juices and essential oils from whole fruits, in particular from citrus fruits, wherein it comprises, in combination, a series of cylindrical elements, having a vertical axis, telescopically set with a slight radial clearance, a second series of cylindrical elements, axially aligned with the preceding one and symmetrically disposed at such an interval as to allow for the insertion of a fruit, and means to draw closer said cylindrical elements of the two series in a differentiated way, so as to cause with their edges, a progressive compressive action, substantially distributed all over the fruit surface.

Abstract: A package strapping machine for strapping a package to a pallet, which pallet is usually constructed from lumber and is of standard shape or configuration. The pallet comprises generally a supporting platform for the package with longitudinally parallel extending stringers secured to the underside of the supporting platform. The strapping machine is provided with a strapping station where the package is tied to the pallet and is so constructed that a strap is carried beneath the stringers and through a strap ring including an arch around the package if the pallet is facing in one direction, because a pallet position sensing means, such as a ray of light which is provided at one side of the pallet, cannot pass through the solid stringers to a photo-sensitive device located at the other side of the pallet. However, if the pallet is turned 90.degree. so that the voids between the stringers which extend completely through the pallet structure are positioned 90.degree.

Abstract: A device for axially crushing a can is disclosed. The device is hand operated and characterized by a mechanical linkage which increases the mechanical advantage or leverage applied to the can undergoing crushing, giving an ultimate result of compression of recyclable cans, particularly aluminum cans, to a small fraction of their original size. Also disclosed is a method of operation of the device.

Abstract: In an offset duplicating machine, an implement for marking, such as perforating, slitting, scoring or the like, each printed sheet conveyed through the machine; for transverse marking, a first marking strip is affixed lengthwise on an impression cylinder and a rotatable counter-roller is mounted adjacent and at a skew inclination to the impression cylinder; the counter-roller has an outer surface of hyperboloidal shape which allows the strip to progressively mark the passing sheet. By grooving the counter-roller or by varying the distance separating it from the impression cylinder, additional marking strips may be affixed to the impression cylinder to provide various marking configurations on the printed sheet.

Abstract: A printing apparatus has a holder which incorporates a permanent magnet and has a printing element or elements containing magnetically soft material.In use a printing element is held against a thin positioning portion by the attraction of the permanent magnet. To engage a printing element the printing element is placed in contact with the positioning portion and the permanent magnet is brought up to the positioning portion. To release a printing element the permanent magnet is moved away from the positioning portion.Printing elements may be aligned printing-face down in an aligning member. The printing elements have depicted on the face opposite the printing surface the character on the printing surface.In one version a printing apparatus is used as a hand-stamp, and in another version a printing apparatus is inked and used by hand-rolling.

Abstract: 1.

Abstract: A conveyor trolley structure made of a plastic super tough nylon material comprises a pair of arms each supporting a wheel for rotation and bearing upon the flanges of an I-beam monorail. A pendant member is secured to and between the lower ends of the arms. Metal screws are used to hold the depending member to the arms and to secure stub axles for the trolley wheels to their arms.

Abstract: A system for suspending the traction motor and gear box of a parallel drive arrangement in a railway truck or the like in which the gear box and traction motor shafts are flexibly coupled together to accommodate relative movement between the two shafts. In addition, an arrangement is provided by which the mounting of the motor on the railway truck accommodates lateral displacement while the coupling between the traction motor housing and the gear box accommodates angular and offset misalignment of the coupled shafts.

Abstract: The coupling arrangement includes a longitudinally extending shaft, means for supporting the shaft on the vehicle body and a linkage which connects the trucks to the shaft. Each linkage employs a transverse steering rod which is articulated to the end of a truck at a predetermined connection point which lies in an inclined plane passing through a guide member connecting the truck to the vehicle body and through a transverse center plane of the vehicle body.

Abstract: A stabilizer for providing railway car wheel-truck anti-hunting stabilization with automatic stabilizer releasing at rail curves. This stabilizer comprises first and second anchors attachable respectively to the car body and truck, the stabilizer having an intermediate section having a movement preventing module preventing destructive truck hunting movement of the anchors with respect to each other in at least one direction during straight track travel, but permitting the anchors to freely move with respect to each other when the truck reaches a section of curved track.

Abstract: A vehicle hopper construction having longitudinally spaced hopper end slope sheets and hopper cross ridge slope sheets formed prior to assembly in the vehicle hopper so as to provide integral interior hopper corner plates with associated transversely spaced hopper side sheets.

Abstract: The shelf assembly described herein comprises a shelf arrangement designed for assembly by sliding in a limited manner doweled or tubed component parts into interlocking arrangement from the rear of the assembly. This has the advantages of a locked arrangement once the assembly is fastened to the back of a door and allows for greater structural strength and improved appearance of the front of the assembly.

Abstract: Disclosed is a pallet constructed of paperboard material which is preferably water resistant. Two sheets of corrugated paperboard which are cut to define interlocking tabs are spaced in parallel relationship by a plurality of cylindrical sleeves, or rectangular corrguated tubes. The tabs are bent perpendicular to the sheets. Slots in tabs in one sheet interlock with slots in opposed tabs in the other sheet. The cylindrical sleeves or rectangular tubes surround the tabs to thereby provide lateral stability as well as vertical strength. Preferably, the corrugated paperboard sheets are impregnated with a waterproofing material such as wax, and the cylindrical sleeves are constructed of spirally-wound paperboard, or, alternatively are in the form of corrugated tubes.

Abstract: A footstool is disclosed which is variable in both its height and its slope to accommodate the varying needs of individuals who are required to hold a leg in an elevated position for extended periods of time and are, therefore, prone to fatigue of the leg, back and other portions of the body. The stool includes a main body portion having adjustable legs at each end and which may be hinged to the main body portion for convenience in transport and storage. Each of the legs is formed of a base portion and a portion fixed to the main body of the stool with an infinitely-variable adjustment member such as a screw anchored in one of the leg portions and a mating nut mounted in the other of the leg portions. Preferably, the legs extend downwardly from the main body at diverging angles, in their use position, to enhance the longitudinal stability of the stool.

Abstract: A lockbox is disclosed, as for use in hotel closets, which includes an above-floor container fixed to define a space with a rectangular opening for closure by a locking cover. The cover incorporates a peripheral double ridge defining a peripheral channel to receive the upper edges of the container. Pairs of latching cam members are pivotally affixed at central, diametrically opposed locations in the cover, for actuation by a centrally located lock movement for engagement and disengagement with slots in the container. The movement is accomplished through a symmetrical linkage mechanism which simultaneously actuates each of the individual cam members and which incorporates a pair of parallel arms extending between pairs of the cam members and a pair of linking arms extending from the parallel arms to the lock movement. The pivotal support shafts for the cam members also serve as spacer mounts to support an internal cover for the locking mechanism.

Abstract: An electrical discharge is controlled in such a manner as to permit its use to reliably ignite a fuel stream consisting of pulverized coal entrained in air. The ignition technique of the present invention creates expanding and contracting plasma pockets at a rate which is high compared to the velocity of the fuel stream and permits the ignition of the fuel stream in a cold furnace and/or without supplemental combustion of liquid or gaseous hydrocarbon fuels.

Abstract: A system for controlling the starting end of a thread is disclosed in which air is provided via a conduit and nozzle to a point adjacent the needle and above the presser foot of the sewing machine. The arrangement is such that the air is controlled by a valve whose operation is in turn controlled by the position of the presser foot so that air is supplied only when the presser foot is raised and the sewing machine is in a stopped position.

Abstract: A needle positioning attachment connectable to the main drive shaft of a sewing machine in place of a pulley and handwheel assembly conventionally found on blind stitch and similar machines includes a resilient assembly for accumulating energy from rotation of the main drive shaft of the machine so as to use this accumulated energy for actuation of the needle positioning attachment when the main drive shaft ceases rotation. In this manner, the needle of the sewing machine will be positioned as desired for starting a new sewing operation each time the machine is deactuated.

Abstract: A hydrofoil sailboat having a sailing frame that is secured by swivel connection to a conventional hull, the frame comprising a plurality of prestressed interconnected spars, guys and a sail, a pair of buoyant hydrofoils, one at each of the leeward extremities of the frame, and a single manually operable tiller situated at the hull for governing the direction of movement by articulating the hydrofoils in accordance with the point of sailing and the direction of the wind. The tiller is operatively associated with the hydrofoils through pairs of spreaders and multiple cables. The sail is inclined to the vertical axis, and is tightly stretched to define an air foil spaced laterally away from the hull. The crank adjusts the inclination of sail and the hydrofoils cancel out listing moments. The sail frame exerts a towing force on the hull.