Abstract: A hollow rivet and a setting mandrel are injection molded of thermoplastic material to form a single piece blind rivet or a blind rivet type foot of a fastener for moldings and the like. A draw shank and an enlarged head of the setting mandrel are interconnected by a break joint, and another break joint connects the mandrel with the surrounding tubular shank of the hollow rivet. Setting pull on the draw shank first ruptures the break joint between the mandrel and the hollow rivet, then sets the rivet, and finally ruptures the break joint between the draw shank and the mandrel head.

Abstract: A hold-down construction for a shear used for shearing workpieces from an elongated metal member including an elongated beam having first and second ends and a central portion therebetween, a hold-down assembly mounted on the central portion, a pivotal connection between the first end of the beam and the post of a shear, and a detachable connection between the second end of the beam and another post of the shear, to thereby permit the hold-down to be swung toward and away from a knife assembly mounted on the shear, and a connection between the hold-down assembly and the knife assembly for reinforcing the hold-down assembly against movement away from the elongated metal member during shearing thereof.

Abstract: A slitter with a plurality of slitter heads mounted on a turntable to allow rotation of the heads. Each slitter head is adapted to be joined to a motor drive by means of an interconnecting arbor end portion which extends from the outboard bearing of the slitting head.

Abstract: In a fret saw blade having a shank portion and saw-teeth, the saw-teeth are formed in a manner that the centers of the cutting edges of some saw-teeth are depressed and deformed generally in V-shape so as to form sharp ends projecting beyond the side surfaces of the shank portion of the fret saw blade.

Abstract: The guitar has a novel feedback arrangement for sustaining the sound generated from the strings and including a pickup associated with each string and a corresponding driver intercoupled with the pickup in a feedback loop that also includes a gain-controlled amplifier. The amplifiers are controlled in common from a variable control means. The pickups, drivers and associated electronics are all commonly mounted from the bridge. In an alternate embodiment of the invention there is provided an improved sustain technique that provides a more natural sustain characteristic, employing a parametric type of excitation. This embodiment may comprise a pickup, amplifier and tensioning member responsive to the output of the amplifier for sustaining string vibration by causing longitudinal string displacement by means of the tensioning member. In a similar embodiment the string tension may be held constant and the string length varied instead.

Abstract: An electronic musical instrument for producing a vocal sound signal comprising a musical tone signal generator connected to a passing circuit for passing a musical tone signal under the selection of a key. A formant filter is connected in the passing circuit and includes a plurality of filters connected in parallel to one another. A control system is operative to produce two output signals in the passing circuit after the formant filter in sequence upon operation of the key, one of the output signals being a vowel sound and the other a consonant sound.

Abstract: A keying system in an electrocin musical instrument comprises a circuit for generating harmonic level control voltages for controlling the levels respectively of harmonics (inclusive of the first harmonic, i.e.

Abstract: An electronic music synthesizer capable of simulating a wide variety of musical effects, wherein the settings which create the various effects are hard wired on a plurality of selectable circuit boards so that programming of the instrument can be accomplished by the player with minimum effort. The synthesizer encodes a plurality of keys on the keyboard and selects a tone from the tone generator corresponding to the depressed key. This tone is fed through a chain of dividers to create the needed footages, which are then fed to voicing cards that create the different tone sources for the synthesizer. These tone sources are fed into a state variable active filter which modifies the timbre of the tone sources in order to achieve the desired frequency-related effects.

Abstract: A brass pulse keyer for electronic instruments such as electronic organs wherein the tone during attack is both amplitude modulated and pulse width modulated. The keyer is adapted for large scale integration and comprises a timing capacitor, an electronic switch connected between a source of charging potential and a capacitor and having a control terminal which is connected to the tone input, and a second electronic switch connected in series with the charge voltage, the first switch, and the capacitor and having a control terminal connected to receive the keying envelope. A comparator compares the potential on the capacitor with a reference potential and disables a gating circuit when a compare condition is reached such that the duty cycle may be controlled. As the keying envelope continues towards its maximum, the duty cycle decreases so that a more brilliant tone is achieved.

Abstract: A resilient seal 15 for the head 14 of a headed pin fastener member comprises an annular sealing bead 25, an annular boss 24 projecting on both sides beyond the thickness of the bead 25 and having tapered faces 29, 29, and a thin annular web 26 joining the parts 24 and 25. The symmetry of the seal enables it to be assembled on the pin either way round, with the same result.

Abstract: A lockable pin comprises a ring-like locking element which is cut at a place on the circumference to provide free ends at which it is pivotally attached to the pin body.In use, the pin is inserted in a throughgoing hole formed in a shaft end and the locking element is brought into engagement with a recess formed in the front end of the pin body or with an annular groove formed in the shaft end. The locking element is firmly held in the recess or groove by the elasticity of the locking element itself or by an upward elastic force acting on the pin body.

Abstract: The staple is in the form of an integral metal wire bent into a V-shape, the vertex of the V in turn being bent at 90.degree. to form a first punching element. The diverging ends of the arms of the V-shape in turn are bent downwardly 90.degree. to form second and third punching elements. The staple can be used to fasten two members with one of the punching elements being received in one member and the remaining two punching elements being received in the other, the general V-shape of the staple providing stability at the stapled joints of the members.

Abstract: A field artillery ammunition support vehicle is mounted on an armored tracked chassis and has an armored body providing protection for the driver and for the crew within the vehicle. Within the armored body of the vehicle racks are provided for the projectiles and compartments are provided for the propellant charges. A vertical elevator is disposed within the vehicle body adjacent the projectile racks to receive projectiles and to carry them to a horizontally disposed conveyor which conveys the projectiles through a rear opening of the vehicle and into the adjacent gun vehicle when in firing position, the rear opening of the support vehicle having an armored door which is raised when supplying the gun vehicle to provide added protection for gun and vehicle crews. Compartments along the inner sides of the support vehicle body or housing carry the propellant charges which are placed on the conveyor behind each projectile for movement to the gun vehicle.

Abstract: The present servomotor has a working piston in a piston cylinder. The worg piston is connected to a spindle having a relatively high pitch. The spindle is attached at one end thereof to a control disk system comprising three control disks. The two outer control disks are rigidly connected to the spindle, and the central control disk is connected to a digital stepping motor. The central disk is arranged between the two outer control disks so that the central disk may rotate substantially free of play, whereby the rated position of a stepping drive motor corresponds precisely to the actual position of a linear output member, such as a piston rod.

Abstract: A chimney stack exhaust treatment unit and an improved exhaust gas treatment system utilizing such a unit are disclosed. The unit comprises a generally spherical outer housing which fits over the mouth of a caustic-resistant chimney pipe and encloses a horizontally mounted squirrel cage fan which is driven by an electric motor situated above it. The fan is situated directly above the chimney mouth so that when it is rotated, exhaust gases are drawn up through the chimney and swirled around the inner walls of the outer housing. Exhaust ports near the top of the housing provide an exit for treated gas. An inner housing encloses a fan motor, isolating it from the interior of the outer sphere. A conduit connects an opening in the outer sphere with an opening in the inner housing, and the inner housing includes a mouth directly above the fan, whereby rotation of the fan also draws outside air through the inner housing to cool the motor.

Abstract: A forage press is disclosed for use in injecting forage or other feed material into an elongated flexible horizontal forage receptacle or silo. The forage press includes an injection chamber for introducing material into the forage receptacle and a press wheel which presses the material through the injection chamber into the receptacle. The press wheel is formed in a circular shape and includes a plurality of sectors each of which is formed at a canted angle so as to press the forage material into the injection chamber as the press wheel is rotationally driven by an external source of power.

Abstract: A pair of continuous belts, at least one which provided with openings for percolation, are arranged in overlapping relationship and controlled to forward move in the same direction. A loading hopper is provided at the initial portion of the lower belt, and means are arranged opposite to said hopper for varying the angle of convergence of the two belts and accordingly varying, as required, the pressure action exerted by said two belts on the product being treated.

Abstract: The invention contemplates a document printer for the automatically indexed sequential account numbering of successive documents, with the added feature of printing alongside each sequential number an automatic indication of the validity or invalidity of the number printed, said indication being a "check digit" which, in conjunction with the printed account number, renders the printed account number self-checking. The invention is described in application to weighted-modulus self-checking systems of the Modulus 10 and Modulus 11 varieties, inter alia.

Abstract: A device for limiting the number of printing columns in a printer in which a group of printing data codes transferred from a data source are successively compared with a group of type codes which are determined in correspondence to the instantaneous positions of type on a type carrier, so that a type in a place where a printing data code coincides with a type code is printed. The device comprises a reversible counter adapted to subject a coincidence signal relating to said printing data code and type code and a printing completion signal for each place to addition and subtraction, respectively, so that when the count value of the reversible counter reaches a predetermined value, printing for further places is inhibited.

Abstract: A mechanism for damping vibration in the gear drive of a rotary printing press is disclosed. The various gear driven elements such as transfer cylinders, forme cylinders and blanket cylinders carry belt pulleys with the pulleys being connected by suitable belts. The sizes of the pulleys are selected and sized to attempt to drive the various cylinders at a speed less than the speed provided by the gear drive. In this way the gear drive is not allowed to chatter or vibrate. The orientation of the drive belts is selected to conform with the number of gears in a particular gear drive assembly.

Abstract: A device for sensing speed and angular position of a web of newprint in a continuous feed press. A stator includes an optical source and an optical sensor. A rotor has an aperture of predetermined size and position which is operative as a shutter to block and unblock the optical path between the optical source and sensor. The device provides a speed and position signals without commutator contacts which are subject to rapid wear and which require frequent maintenance.

Abstract: A cleaning device for a wiping cylinder of a direct plate printing machine, comprising a container for receiving the cleaner liquid, a first scraper in contact with the periphery of the wiping cylinder followed by brushes and further scrapers, at least two rows of nozzles parallel with the axis of the wiping cylinder for ejecting the cleaning liquid such that in the direction of rotation of the cylinder, the area of the wiping cylinder located in front of said scrapers and brushes being wetted by a continuous film of liquid, the level of liquid in the container being kept such that the wiping roller is never immersed in said liquid.

Abstract: A self-propelling projectile comprising a projectile body at the normally forward end of said projectile, a propellent charge at the normally rearward end of said projectile, and a primer element located between the ends of said projectile for ignition by side firing or percussion; there being means for maintaining said components in integrated relationship and with communication between said primer elements and said propellent charge whereby upon explosion of said propellent charge the force of the latter will be directed against the base of the projectile body.

Abstract: A track renewal train includes a semi-trailer work car which carries track renewal equipment and includes two selectively usable undercarriages for supporting the rear end of the work car. One of the undercarriages is an off-track track-laying bogie supporting the work car on the trackless section where track renewal is effected and the other undercarriage is a vertically movable on-track bogie. A selectively usable on-track bogie supports the forward end of the work car when it is linked thereto, the forward work car end being linked to the last car of the train during track renewal operations.

Abstract: A mobile rail welding machine comprises a frame, a hydraulically driven flash butt welding device, a "Thermit" welding unit and preferably an electric arc welding device mounted on the frame for selectively flash butt welding, "Thermit" welding or arc welding abutting rail section ends of a track rail, and a weld burr removal device adjustably mounted on the frame for selectively removing weld burrs at either rail.

Abstract: A guideway gravity vehicle combination designed for recreational use on hills and mountains consisting of a wheeled, stabilized vehicle riding on a monorail which extends from the top to the bottom of a downwardly inclined slope. The rider controls the vehicle speed through the use of powerful braking systems. Maximum speeds are regulated by automatic braking.

Abstract: An electrical apparatus is disclosed to increase the adhesive load per driving axle and therefore the corresponding permissible tractive and braking forces per driving axle of locomotives and motor-coaches which travel on rails and to contribute directly to the over-all tractive force or braking force of such vehicles. In one configuration the electrical apparatus includes a system of linear inductors for generating travelling magnetic fields in the rails, the inductors including a double sequence of conjugate poles, the lines of force of which pass transversely through the upper flange of the rail. In another configuration, the electrical apparatus includes both a system of linear inductors for generating, in the rails, a magnetic field, travelling or fixed, and a conjugate system of electrical brushes for injecting, in the rails, electrical currents in controlled relationship with the magnetic field.

Abstract: A rolling trolley device adapted to ride upon opposite side flanges of a support beam; said trolley device comprising a generally V-shaped load supporting yoke bar of one-piece formation carrying at the opposite legs thereof a pair of generally tubular-shaped trolley wheel support housings; wheel support members extending from said housings at opposite sides of the legs of said bar; and support beam engaging wheels mounted upon said support members; said housings being keyed to said yoke bar legs in positionally adjustable relation thereon to adapt said device to operate efficiently on a large variety of support beam sizes and flange width and slope configurations. The trolley wheels are carried by said housings so as to rotate about axes which slope away from and into acute angle intersections with the planes of the trolley wheel contact/support surfaces; thereby directionally balancing out the thrust load and reaction load forces to provide an improved wheel tracking operation.

Abstract: An adapter pad centering device for the side frame of a radially steerable railway car truck with pedestal jaws on opposed end portions thereof for mounting railway car wheel assemblies equipped with a resilient bearing adapter pad mounted between the bearing adapter and the pedestal jaw roof. The adapter pad centering device includes a pair of rigid adapter pad stops on the side frame at opposed sides of the pedestal jaw opening at the roof thereof. Each of the stops has an abutment extending transverse to the side frame. These abutments are spaced so that when the adapter pad is positioned between them, an upper portion of the pad is restrained from significant movement in the longitudinal direction of the side frame. The lower portion of the adapter pad is attached to the bearing adapter and temporarily displaced during steering motions of the truck.

Abstract: A locking and actuating mechanism for a pair of horizontally movable hopper doors includes an arm and actuating linkage which engages a track side cam for moving the doors between open and closed positions. One of the doors includes a keeper which is engageable by a latch mechanism in the other door. The latch mechanism includes a linkage arrangement which is connected to the actuating link and arm by means of a lost motion connection.

Abstract: An open top gondola railway car of depressed center design having stub sills and an end panel at each end of the car body which slopes outwardly and upwardly from an intersection with a generally permanently closed bottom having horizontal plate portions and at least one centrally located depressed curved portion in cross-section. Wheeled multi-axle trucks adjacent each end are provided with the horizontal plate portions extending over them. An upwardly directed step portion located intermediate the ends of the curved portion and reinforced openings having a smoothly curved perimeter in the horizontal plate portions located over the wheels, provide an increase in the clearance distance between the bottom and any concave or convex contoured portion of track upon which the car is located. The openings may be circular with rings or flanged conical members bolted to them to provide the reinforcing. The sloped ends have support sheets directing lading forces exerted on the ends to the stub sills.

Abstract: A multifunctional folding furniture system includes a basic frame structure to which functional panels are removably attached. The frame consists of four stiles (uprights) connected by side rails to form side members, which members are removably and rotationally connected to a back panel having two elongated slots to form the frame of the basic unit. Functional panels of various dimensions and configurations may be removably and rotationally applied to the frame to create functional surfaces.The complete system includes a number of frame units and separate panels, all of which may be interconnected to form a large variety of furniture pieces, including various arrangements of desks and tables.

Abstract: A foldable and removable table for use with vehicles of the type having a hinged panel permitting entry into the vehicle includes a corner table member having a flat supporting surface and a pair of hooks, each hook removably engaging the vehicle panel in a corresponding hole, each hook being coupled with the table member at spaced corners thereof. The table includes a leg foldably fastened to the table member on a side opposite the supporting surface foldable to a storage position flush with that side. The hooks are dimensioned such that rotation of the table member about one corner and one hook permits the table to be moved from a storage position flush with the panel to an open position for use as a table.

Abstract: The invention relates to the wood or metal furniture industry. A folding tea trolley comprises two parallel trays, comprising a front frame and a rear frame with U-shaped lower parts, pivoting means for the rear frame and the trays, on the front frame, and temporary connecting means for the rear frame with the trays, so that in the folded position of the table, the front frame contains the lower tray in its plane and the rear frame and the upper tray are situated on both sides of the plane of the front frame and in planes parallel to the latter. The invention is used for serving trolleys.

Abstract: A carrying case, having a hinged lid, is provided with a handle and locks. Within the interior of the case and hingedly connected to the case is a liner, within which are stored sensitive papers. A thermite charge is within a removable boat in the liner and has igniters electrically connected, through a selectively positionable key operated switch, to a battery and through various switch members so that the igniters are triggered upon the occurrence of and one of various events. One switch member is on the handle and is depressed when carrying the case. Other switch members are closed upon tilting; still other switch members are closed if a knife is passed through the exterior of the container. Still other switches are closed in the event that a knife is inserted to prize open the case or the case is opened without being disarmed.Upon the making of an electrical circuit, the igniters ignite the thermite charge to burn or char the papers, the gases escaping through an opening in the lid of the case.

Abstract: A combustion method and apparatus for disposal of materials that release noxious, corrosive, and/or toxic gases when burned, particularly halogens and/or acidic gases, is disclosed herein. In the disclosed system, a waste material is burned, the gaseous products of that combustion are cooled, and the cooled gases are then contacted with an alkaline substance of a Periodic Table Group I.A or II.A element in a fluidized bed to scavenge the noxious, corrosive, and/or toxic components in the combustion products.

Abstract: A freely oscillating moving element (12-14-16), according to a radial axis with respect to the furnace wall (1) and having an inner appendix (12) deviated from the axis and with an outer counter-weight (16), can oscillate between two angular positions defined by pawls, towards the first of such positions said moving element is cyclically moved during the moving element lowering trajectory with the rotation of the furnace while towards the second angular position said moving element is cyclically moved during the moving element raising trajectory with the furnace rotation; said moving element can reach said second position only when the inner appendix (12) emerges from the material contained in the furnace.

Abstract: A furnace for the conversion of trash and garbage into useful energy, in which use is made of a movable grating system over which the trash and garbage is advanced for passage through the furnace, the means for driving the grating being located outside of the furnace with a heat sink in between and which includes means for disconnecting the grating from the drive means without the need to gain access into the interior of the furnace.

Abstract: The user presses a stitch-type selector button in a first row of buttons, and plural illuminatable buttons in a second row of buttons light up to indicate which application patterns are based upon the selected stitch type, as a substitute for reference to an operator's manual. The user then presses one of the illuminated second-row buttons, to effect pattern selection. Upon pattern selection a set of display units and display elements becomes operative. These display numerical ranges of cloth-feed amount and zig-zag amplitude from which the user chooses, and then manually sets on the machine. Other variables thusly displayed for user guidance are what particular attachments should be used, what thread tension should be used, what presser foot, whether a single or twin needle is to be used, and others. Depending upon the selected pattern some variables may require automatic, not manual adjustment, and the affected display units indicate this to the user.

Abstract: Arrangement for forming patterns made up of stitches in an electronic sewing machine includes a static memory comprised of a plurality of storage units, stitch forming means operatively connected to the outputs of the storage units for producing any of different stitches in dependance from the signals produced at the outputs of the memory, addressing means for applying to the address signal inputs of the memory next-address signals derived from the signals produced at the outputs of the memory, synchronizing means for activating the addressing means synchroniously to operation of the stitch-forming means and back-stitching means for changing the next-address signals in accordance to the required back stitches.

Abstract: A sewing machine including stitch forming device, electrically driven means for driving the needle and the feed dog, a static memory to control the electrically driven means and a pattern selecting arrangement. The electrically driven means comprise a pulse motor for controlling a horizontal feeding amount of the feed dog and a clutch solenoid operatively connected to a shaft of the pulse motor. The device is provided with a feed control arrangement having an operating member to actuate the position of the feed dog. The clutch solenoid is operatively connected to the operating member and is energized in response to a stitch signal from the static memory to define the position of the feed dog in accordance with a selected pattern.

Abstract: The invention contemplates a hand-held and hand-operable stitching device capable of performing a stitching operation at substantial offset from the region of manual contact. The stitching is performed as a special filament-carrying needle is shuttled in a reciprocating cycle of alternated release and retention at corresponding needle-retaining ends of two arms having articulated connection remote from their needle-retaining ends.

Abstract: A sewing machine is provided for stitching an ornamental stitch produced by an ornamental stitching pattern control arrangement for the purpose of setting the character and pattern of the needle movements. The sewing machine provides a stitching pattern selection device including manipulating select buttons classified according to color, and a presser attachment including a variety of presser feet having color indications corresponding to the color of the select buttons.

Abstract: A sewing machine installation for sewing shirt front box hems and having a first underlying belt conveyor for individually conveying shirt front material blanks longitudinally forwardly along a lower main support table through a shirt front edge folder and a second overlying belt conveyor for individually conveying separate box hem material blanks with a liner tape longitudinally forwardly along an upper auxiliary table section through a box hem edge folder and into superimposed preassembled association with the prefolded shirt front blanks; the overlying and underlying conveyors thereafter cooperating for conveying the preassembled shirt front box hems longitudinally forwardly along the main support table through sewing and shearing stations for sewing the preassembled shirt front box hems and shearing excess material from the leading and trailing edges thereof.

Abstract: A beam for a triangular wall section of a geodesic dome structure is made from a single rectangular sheet of metal. The longitudinal side edges of the metal sheet are bent to form a parallel pair of side walls that are non-perpendicular to the flat central base section that lies between them. The extremities of the side walls are curled inwardly. Each end of the beam thus formed is cut along a plane which lies perpendicular to the side walls but at an acute angle to the base section. Holes are formed in the base section for bolting it in back-to-back relation to the base section of another similar beam.

Abstract: A boat which includes a hull body. The hull body includes a floor; two longitudinal walls and two end walls, each wall having a top face, the walls being joined together at their meeting ends into a substantially rectangular shape, and also are joined to the floor. There further are provided holding apparatus for holding the top faces of the four walls of the hull body in inverted fashion against an open-load-carrying part of a transportation vehicle; and connection apparatus for connecting at least one hull extension member and other additional members to the hull body.

Abstract: A sail feeder for mounting on a mast formed with a sail receiving slot, said slot having an enlarged entrance for receiving the bolt rope of a mainsail, includes a rigid plate having a pair of legs projecting out from the plate at laterally-spaced locations thereon. The legs are oriented at the same acute angle relative to the plate and they are toed toward one another so that their free ends are spaced apart a distance less than the spacing between their ends attached to the plate. The said feeder is arranged to be secured to the mast at a location directly below the slot entrance. When raising the sail, the end of the bolt rope at the head of the sail is passed through the sail feeder and thence into the slot via its entrance. As the sail is raised by the main halyard, the bolt rope is drawn through the sail feeder which aligns the rope with the slot entrance so that hoisting of the sail can proceed without any need of manually aligning the bolt rope with the slot entrance or the feeder.

Abstract: A connecting arrangement for connecting two elements with one another, particularly a mast and a boat body of a wind surfboard comprises a male member connected with one of the elements, and a female member engageable with the male member with snap action and connected to another of the elements. At least one of the members connected with a respective one of the elements is rotatable within the horizontal plane. Preferably, this one member is rotatable within the range of 360.degree.. The male member and the female member together form a spherical joint. The male member may include a bolt section and a sperical section connected therewith whereas the female member may include a bolt portion and a cup portion connection therewith and adapted to receive the spherical section of the male member therein.

Abstract: A device for progressively cleaning the hull of a boat being moved forwardly along a prescribed path. The device includes a submersed stationary support frame. A hull cleaning framework is mounted to the support frame and is elevationally movable thereon between a partially submerged operative condition, and an above surface inoperative condition. A number of brush supporting arms are pivoted on the hull cleaner framework and extend along the path of a boat through the device at their outer ends. The arms are biased inwardly toward the path for yieldably urging the rotating brushes against the boat hull regardless of its configuration. The device will automatically adapt itself to a wide variety of power boat and sailboat hull shapes. Vertical brushes are provided to clean the downwardly projecting keels of sailboats. Transverse bottom, intermediate and side brushes are independently pivoted to accommodate sailboat hulls or many other forms of boat hulls.

Abstract: A drive assembly in boats is disclosed, comprising a drive assembly with motor and an inboard-outboard drive coupled to the motor, and a motor bed, which has a passage, through which the assembly extends and which is aligned with a hole in the bottom of the boat, through which the assembly extends. The assembly has an elastic sealing ring which is held pressed between the wall of the passage and the outer surface of the assembly.