Abstract: A collet assembly in which actuation is resisted by a spring washer sandwiched between two wear rings, in which the collet sleeve may be pre-tensioned by a conveniently located nut and in which end thrust is adsorbed by needle bearings.

Abstract: A quick change tool holding assembly of the collet type is disclosed wherein a machine spindle carried collet assembly includes gripper members engageable with surfaces of a tool holder carried nut interior of the collet assembly to maintain the nut on the spindle. In order to prevent entry of coolant and other foreign matter into the interior of the collet assembly the assembly is provided with an axially extending circumferential inner diameter land below the gripper members and the nut is provided with a seal member engaging the land.

Abstract: A dual pedal crank assembly for a bicycle or the like has a shaft defining a shaft axis and having a pair of ends one of which is flatted and tapered axially away from the other end. This one end further forms a locking surface lying substantially in a plane inclined to the shaft axis and forming therewith an acute angle pointed toward the other shaft end. A fixed crank cast integrally with the shaft lies on and defined a fixed-crank axis generally perpendicular to the shaft axis. A removable crank extending along a removable-crank axis is formed with a recess centered on a recess axis generally perpendicular to the removable-crank axis, and complementarily shaped to the one end of the shaft so that this one end can be received in the recess with the removable-crank and shaft axes aligned. The crank is further formed with a bore centered on a bore axis spaced from the recess axis and lying in a plane generally perpendicular to the recess axis.

Abstract: A dual-purpose motorcycle lock bar that is adapted to be secured in the locking position between the spokes of the rear wheel to the swing-arm of the motorcycle, and in the transport position to the down-tubes of the motorcycle to provide a raised footrest for the rider.

Abstract: A bicycle incorporating a frame with unitary components interconnecting the post with the rear wheel axle permitting of facile mounting and dismounting by a member of either sex with a vertically movable seat obviating the rider's withdrawal therefrom during bicycle stoppage; and with the bicycle being equipped with underslung pedals which may, if elected, be formed with a support stand either of nonmovable character or of toggle design for movement between retracted, inoperative and extended, operative positions by the user's foot. The bicycle also embodies a pedal actuated brake assembly designed for locking disposition upon back-pedaling and release through operation of a conveniently presented control cable; there also being a mounting for the handlebar permitting of rapid disposition of the handlebars in selected attitude without resort to extrinsic tools.

Abstract: A steerable towing device having at least two wheels, a frame, a tongue having at one end a socket adapted for connection to a first ball on a towing means and having the other end connected to said frame, at least two axially aligned wheels, a steering assembly having a bifurcated steering crank having a center pivot point and two extended arms of predetermined length extending from the center pivot point with the extended arms having an obtuse angle therebetween, a steering arm having at one end a socket for connection to a second ball on a towing vehicle spaced a selected distance from the first ball and the other end of the steering arm being pivotally connected to the end of one extended arm of the bifurcated crank, a connecting rod pivotally connected to the end of the other extended arm and a steering assembly which includes an integral drag arm and a tie rod connecting arm connected to steer one of the two axially aligned wheels and a separate tie rod connecting arm connected to steer the other of the

Abstract: A ski brake includes a pair of elongated levers each situated at one side of a ski and pivotable between an extended and an intermediate position laterally of the ski. A free end portion of the lever engages the surface on which the ski is supported when the ski becomes detached from the ski boot. A spring arrangement urges the respective levers toward their extended positions. The levers are further mounted on the ski for angular displacement between the intermediate position and a retracted position in which the free ends of the levers are located over the upper surface of the ski so as not to interfere with the proper operation of the ski. Another spring arrangement urges the levers from their retracted to their intermediate positions when the ski boot becomes detached from the ski.

Abstract: A ski brake mounted on a ski and retained normally in a retracted position. When the skier's boot becomes separated from the binding on the ski in a casual manner, such as during ascent on a chairlift, a strap joining the skier's boot and the ski brake permits the ski to remain connected to the skier, although in a dangling condition. However, should the skier's boot become separated from the binding in an abrupt manner, as when skiing, the strap releases a retention mechanism holding the brake in a first or retracted position. Thereupon, the strap is completely separated from the brake and the brake is rapidly moved by a spring into a second position such that a brake shoe extends below a lower surface of the ski for engaging ice, snow, and the like. The brake shoe has a roughened outer surface as a further aid in impeding advancement of the runaway ski. Whenever convenient to the skier, a release mechanism on the strap can be operated to disconnect the strap from the boot.

Abstract: A dolly is provided for transporting and storing textile tubes. The dolly comprises a split shallow-walled platform mounted on a plurality of casters. The two halves of the platform are hinged so that they can be pivoted to an open or closed position. One half of the platform is mounted on at least two stationary casters to inhibit lateral movement of the dolly when in the open position.

Abstract: A baby carriage constructed of right and left handle rods, front rods and seat rods pivotably connected by folding front and rear X-shaped beams and folding rear operation rods. The front folding beams connect the front rods and the seat rods, while the rear folding beam connects interior ends of the operation rods to movable members slidably mounted on the handle rods.

Abstract: The vehicle suspension provides an axle assembly which may be mounted either on a truck-tractor or a truck-trailer to provide an additional axle. The suspension includes an axle which is suspended from a vehicle frame by means of a spring structure. A drawbar extends forwardly from the axle to connect the axle to the vehicle frame. A lifting mechanism is provided to raise the axle and associated wheels off the ground when desired.

Abstract: An improved letter sheet continuous stationery assembly is disclosed, and includes a front web and a backing web. Longitudinal and transverse cuts are made in the front web, but not the backing web, so as to define a plurality of letter sheets. The front and backing webs are permanently secured together along their side margins by lines of adhesive. The letter sheets produced in the front web are temporarily secured to the backing web by other lines of adhesive during the time the assembly is fed through additional forms handling equipment such as a computer controlled printer.

Abstract: Joints for limiting the stresses on non-ductile components and structures, and methods for fabricating such joints.

Abstract: A ball coupling for reliable connecting and releasing floating pipings of mud ships and the like nautical applications, mainly consisting of an outer ball a hollow inner ball, and a retaining member, has according to the invention been improved by embodying the retaining member in the form of pivotable ring segments which are located in a space which is delimited by flanges positioned perpendicular to the center line of the outer ball. Hereby it is achieved that the retaining means is at a fixed place due to which coupling and uncoupling of pipings can be executed much easier and quicker.

Abstract: Disclosed herein is a device for connecting corrugated drainage tiles and the like which comprises a sleeve member which fits around the adjacent ends of coaxial drainage tiles. The sleeve member includes tabs which extend from a first side of the sleeve member and are received within the external, circumferential channels in the drainage tiles. One end of the sleeve member includes connecting tabs which are adapted to be received within openings located at the end of the sleeve member. The sleeve member may thereby be positioned about the adjacent drainage tiles and the ends of the sleeve member are secured together by insertion of the connecting tabs into the respective openings in the sleeve member.

Abstract: Disclosed herein is a lock suitable for use with sliding type windows which are constrained to ride within trackways. The apparatus comprises a pair of links pivotally connected having tab portions to provide for manipulation of these two links relative to each other and a biasing apparatus which tends to retard the two links from assuming a position in which one link would substantially totally overlie the other link. Further, downwardly extending tabs provide the nesting area for opposed extremities of the biasing spring which is wrapped in a preferred embodiment around the pivoting juncture of the two links and these tabs ride in the trackway or channel of the sliding windows and provide a resistive reaction to unauthorized opening of the window to such an extent that the window can not be opened in the conventional manner.

Abstract: An improved security strike plate assembly is provided. The assembly consists of a wrap-around security plate which normally includes an adjustable strike plate. The security plate extends around three sides of a wood lock-side jamb member to which it is mounted in order to enhance the impenetrability of the door by preventing splitting of the lock-side jamb and resultant dislocation of the strike plate and keeper during thrusts against the door. The strike plate is adjustable without removing the security plate to accommodate slight variations in the size or shape of the door or frame during seasonal or atmospheric changes.

Abstract: Burglary-resistant apparatus for denying access to door locks through a door crevice is adapted for mounting on a doorjamb adjacent one or more door locks and comprises a vertically elongate blocking plate disposed over the crevice between the doorjamb and a door, which includes flat surface portions extending over marginal portions of the door and substantially into a groove within the doorjamb thereby making it especially difficult to gain access to the crevice by circumventing the blocking plate. A vertically elongate locking plate has one vertical edge thereof secured to the blocking plate and extends perpendicularly therefrom to form a rigid structural unit having a generally T-shaped cross section.

Abstract: A protective framework or bar for a motor vehicle, the bar comprising spaced horizontal polycarbonate tubes having free unsupported ends, the tubes being joined and united to a pair of vertical steel bars adapted to be joined to the motor vehicle, the bars being joined by joining blocks adapted to be adjustably positioned along each of the bars.

Abstract: A buffer for a bumper comprising an outer cylinder having its bottom closed and an inner cylinder fitted slidably into the outer cylinder and defined to be attached to the bumper at the tip thereof, a stopper being provided on the inner surface of the outer cylinder at the tip thereof for preventing the inner cylinder from being disconnected therefrom, an orifice and a check valve being provided at the heel of the inner cylinder for permitting exclusively to flow a fluid sealed in the outer cylinder to the inner cylinder therefrom, a free piston being provided in the inner cylinder for partitioning a gas sealed in the inner cylinder from the fluid sealed in the outer cylinder, and the fluid in the outer cylinder maintaining the gas under a compressed condition through the free piston at the heel of the inner cylinder, thereby allowing the free piston to displace in a damped speed to absorb the vibrations of an automobile attached with the bumper and to improve the stability of the automobile.

Abstract: A wire rope sling having a coating for protecting material lifted thereby, and having eyes at both ends for engaging a crane hook. The coating is a flexible, abrasion resisting plastic, such as urethane, positioned on a substantial part of the sling intermediate the eyes. The coating is fixed to the wire rope and thick enough to withstand the maximum load of the wire rope.

Abstract: A suspension chain head for a mechanically assembled strand-oriented sling chain system has an annular suspension member for suspending the chain head, at least one forked member arranged for carrying an outlet member of the chain head, and a shackle which connects the forked member to the suspension member. The shackle has a first end portion by which it is hung to the suspension member, and a second end portion provided with a pin which connects the shackle to the forked member and is secured against nondestructive disengagement from the forked member. A locking pin is provided for securing the shackle pin to the forked member. The locking pin may be formed as a spring cotter engaged in a circular groove which is provided in the shackle.

Abstract: A thickened elbow section is included between the shank and the curved tip of a J-hook to provide greater strength for the lifting and pulling of objects. Accordingly, the hook has a J-shaped front edge, an L-shaped rear edge, and can be produced by forging hot rolled carbon steel. The yield point and tensile strength is substantially greater than exhibited by conventional J-hooks produced by the bending and heat treating of bar stock.

Abstract: A mobile type housing is provided with a plurality of telescopic movable support elements which are mounted on a base structure for movably supporting the top of the mobile housing between a lowered position and a raised position relative to the base. A pair of lugs are mounted to the base for simultaneous movement between first positions and second positions, the movement of the lugs being substantially parallel and in opposite directions to one another. A plurality of flexible, elongated, incompressible connector elements are connected between the pair of lugs and respective ones of the support members for movement with the lugs during raising and lowering of the top from its respective lowered position and raised position. Drive means is coupled to the pair of lugs to effect simultaneous movement thereof between their first and second positions.

Abstract: A slide for each end of a pick up truck tailgate; the slide allowing the tailgate shaft to be lifted from a U-shaped cup-portion of the slide, and allowing the shaft to be slided under the truck bed; the bracing arms that normally support the tailgate in a rearwardly horizontal position will in this design support the upper end of the tailgate as the tailgate is horizontally slided underneath the truck bed; the tailgate having a lip at its lower end for holding the shaft in the U-shaped cup when the tailgate is in rearward horizontal loading position.

Abstract: A window shade apparatus for an automobile or the like may be fitted to a sun visor thereof, and in one embodiment the shade thereof may be raised and lowered through releasing of a brake system acting on the roller thereof. In another embodiment, an electrical switch may be actuated to drive a reversible electric motor in one and the other direction to raise and lower the shade of the apparatus.

Abstract: A mount is provided for fixedly mounting a wind deflector to the roof of a passenger vehicle adjacent a closable roof opening. In order to accommodate utilization of a common mount for roof openings of different widths, the mount includes a first part which is attachable directly to a vertically extending frame part adjacent the roof opening and a second part attached to the wind deflector, with the second part being circular in shape and being connected at one edge in a rotatable manner to the first part.

Abstract: A foldable baby walker including a body carrier, an annular base frame and three or more support legs collapsibly bridged therebetween is disclosed.

Abstract: In a tunnel boring or shield machine including a chamber defined between a working face and a bulkhead mounted in a machine frame of a shield machine body, means for controlling the amount of earth or muck conveyed to the exterior of the shield machine from the chamber in which earth is accumulated, and drive means for propelling the shield machine body toward and into the working face, a control method and system for ensuring stable boring operation at the working face by detecting the amount of earth or muck excavated or removed from the working face per unit time and the amount of earth or muck conveyed from the chamber per unit time, comparing these two detected values to generate an earth amount deviation signal representing the difference therebetween, controlling the amount of conveyed earth or muck and/or the amount of removed earth or muck in response to the earth amount deviation signal to maintain the earth pressure in the chamber within a predetermined range thereby ensuring stable tunnel boring o

Abstract: An apparatus for removing sealants from expansion joints in pavement slabs preparatory to replacement of the sealant is adapted for demountable attachment to the rear of a motorized vehicle. The apparatus includes a frame which is pivotably movable about a horizontal axis by means of a linear actuator. A carriage, having a cutting tool bit carried in a tool holder at the trailing edge thereof, is supported on the frame so as to be pivotably movable therewith with such movement employed for positioning and holding the cutting tool in the joint being cleaned. The carriage is free to laterally slide relative to the frame for freely tracking the expansion joint being cleaned.

Abstract: Pipe cleaners comprising a plurality of short pieces of threads as active elements are formed in machines arranged in pairs. Threads are wound in helices around two rigid wires, which are advanced adjacent and parallel to each other and each belong to a different one of the machines of the pair. The turns of the helices are severed between the wires in such a way that two pieces of thread are formed of each turn. Half of the thread pieces are secured to each wire by approaching one additional wire to each of the firstmentioned wires and twisting the wires pairwise for clamping the thread pieces between the wires of each pair and for forming two pipe cleaner strings, which are subsequently cut into individual pipe cleaners.The common parts of the machines of a pair comprise thread bobbins, thread winding means, thread severing means and means for guiding the thread helices forming wires.

Abstract: A wheel cover locking device is provided for securing an ornamental wheel cover to the lug of the vehicle wheel. An adjustable cable tightening device is arranged beneath the wheel cover with one end of a cable secured to a wheel lug by the wheel lug nut. A rotatable locking bolt is passed through the wheel cover and threadably engages a spool to which the other end of the cable is attached whereby on rotation of the locking bolt by use of a special key, the spool will wind the cable in a tightened position to firmly secure the wheel cover to the vehicle wheel.

Abstract: Transmission of a slurry along a pipeline by ultrasonic sound waves introduced at an angle to the direction of flow of the slurry particles to intersect the moving particles with a forward and lifting component. Ultrasonic generators or transducers are placed along the bottom of a pipeline at preselected angles relative to the pipeline and flow of material therealong. The ultrasonic waves are in the nature of mechanical waves and may be of a given frequency for specific types of solids. The slurry for which this apparatus is particularly adapted is a slurry of coal particles in the range of approximately 30 to 70% solids by weight with a general spatial concentration of approximately 50%. The mechanical ultrasonic waves propagating in the slurry, which is an elastic body, lift the particles by the angular components of the waves and propel the particles along the pipeline by the horizontal components of the ultrasonic waves.

Abstract: A vacuum-operated sewer system includes an integrated main valve and controller upstream of a collection unit for admitting sewage into the system. An in-line valve unit has a piston-cylinder operator. A vacuum-operated controller and a pilot valve unit are mounted on the operator. A pressure sensor is connected to the gravity side of the valve. A surge tank and check valve connect the vacuum side to a supply port of the controller. A water trap tank is located between the bottom end of an intake air line and the connection to the valve operator and controller assembly. A mesh fills the tank to increase the heat transfer of the moisture laden air such that the moisture condenses out in the tank. A drain system is connected to the trap tank and the operator to discharge accumulated water from the control system into the sewer system during each cycle of the valve unit.

Abstract: A novel loose-leaf holder is provided for binding documents such as multi-leaf computer printouts and mounting the same in a suspension-filing and/or storing system. The holder is of the type described in U.S. Pat. No. 4,056,296 and comprises a plastic body which is molded as an integral unit and comprises two side sections which are connected together by a hinge section so that they can be swung toward and away from one another. The improvement comprises document mounting pins carried by one side section and engageable by the other side section, one or more of the pins being adjustbly mounted on the one side and movable toward and away from the other pins. Manually releasable locking means are provided for locking the two side sections together so as to captivate documents which are mounted on the pins.

Abstract: An electronic component is provided having mounting leads configured as concentric arcs centered about a desired axis of rotation. The leads may therefore be inserted into a mounting board, and the component rotated to a desired angle with respect to the surface of the mounting board. In some embodiments, one or more of the mounting leads is provided with tabs or other positioning elements to facilitate the positioning of the component at any of a number of selected angles relative to the mounting board.

Abstract: A post receiving receptacle having its blank form resemble a cross has a bottom surface with a pair of bowed contact arms bent upwardly from said bottom surface and facing each other to receive a terminal post therebetween. The top ends of the two contacts form a flared opening to facilitate post entry. A second pair of arms are bent upwardly from said bottom surface at right angles to said first pair of arms. The second pair of arms have their top ends bent outwardly to form a pair of ears which are to be bonded to conductive epoxy circuit traces on the surface of a substrate provided with a recess which wedgingly receives said receptacle. The sides of the hole provide a variable overstress support for the receptacle.

Abstract: The invention relates to a structure including a cleat connector for providing an electrical connection between an insulated wire and a bifurcated terminal element of electrically conductive resilient material. The terminal element includes a pair of leaf-spring contact arms lying in a plane and defined by a centrally located slot therein having sharp edges and adjoining an enlarged entry opening. The width of the slot is less than the diameter of the metallic conductor of the wire so that when the wire is pressed into the slot, the wire insulation is cut through, and an electrical connection is established between the wire conductor and the terminal element. A clamping element is associated with the terminal element for gripping the insulated wire.

Abstract: A connector used in terminating a flat multi-conductor cable comprises a contact support and a pressure cap. The contact support houses a plurality of insulation displacement contacts, each contact comprising a boxlike end and an elongated electrical contacting section. Two opposite sides of the boxlike end include a longitudinal slot which receives the conductive elements of the cable to establish a four point contact therewith, and the remaining two sides are peaked to form a structure for piercing the insulation of the cable. The box is seamed along a longitudinal corner thereof and is reinforced by a recess in the contact support in which the box is located. The pressure cap comprises an array of apertures which correspond to the array of displacement contacts housed by the contact support.

Abstract: A wedge-shaped printed wiring assembly is inserted into a chassis having guide rails for coarse positioning of the unit the final alignment being accomplished with male and female pins on the connector. Slotted air openings at the entrance and exit of the printed wiring assembly are matched to corresponding openings through the seal. The seal surfaces are tapered a nominal 1.5 degrees top to bottom to facilitate insertion of the printed wiring assembly into the chassis which causes the taper surfaces to come together and force the seal to deflect uniformly and provide a tight interface across the entire surface. The seal material is preferably polyether urethane or a like material.

Abstract: An electrical tester for circuit boards in which test pins are mounted in a support derived from a corresponding unloaded circuit board and in which wires to the test pin run slidably in interfitting pairs of plastic sleeves.

Abstract: Electrical distribution and/or connection devices include an electrically connecting bridge having two contact limbs with respective contact points for the connection of respective electrical conductors. The contact points may comprise spring clamps. The devices may be formed for mounting in line on a rail and may be formed for the connecting bridge of adjacent devices to be interconnected by a removable bridge component which has two contact limbs for engaging the respective said connecting bridges at web portions thereof disposed between the respective contact points.

Abstract: A terminal board assembly made of electrical insulating material and composed of elements for the mounting of a row of electrical devices and elements for connecting electric wires to each device, the mounting and connecting elements associated with each device being arranged in a row which extends perpendicular to the row of devices, the assembly being constituted by a plurality of identical terminal board units connected together in an interlocked manner and lying in a common plane in the direction of the row of devices, each unit containing all of the mounting and connecting elements for at least one electrical device.

Abstract: A terminal support assembly suitable for encapsulation by a molded resinous block wherein transformer windings are disposed, is constructed of an elongated relatively stiff resilient support member and a plurality of U-shaped terminal members. The terminal members are mounted to and retained in operative position on the support member solely by a snap-fit interlocking engagement with the latter. In this operative position slight relative movement between the terminals and support member is permitted to compensate for tolerances involved in subsequent operations connecting the assembly to other elements.

Abstract: An identification document contains idential data both in visual and holographic form. Simultaneous display of the visual data and holographic data in closely adjacent relationship permits ready detection of counterfeiting, alteration and misuse.

Abstract: The present invention relates to focus and zoom adjusting levers in a binocular which are mounted in parallel with each other on a center shaft between a left side housing and a right side housing of the binocular body. By turning alternately the above two levers each of which is of a wing shape, a focus and zoom adjustment can be made smoothly and speedily, and a correct object is obtainable.

Abstract: A disposable low cost laboratory slide for measuring particle concentration has a base plate in the form of a standard microslide whose thickness is compatible with microscope optics. Tapes of precise thickness formed of chemically inactive material and possessing mechanical stability are adhesively bonded to the base plate in spaced relationship, the thickness of the tapes establishing a precision depth for a volumetric slide chamber. A thin coverslip of standard thickness overlies the tapes and is bonded thereto, the thickness of the coverslip also being compatible with microscope optics. The disposable slide is used in a simple optical system with magnification wherein the field of interest is focused on a precision graticle or screen enabling precise measurement of the area of the slide volumetric chamber, following which the precise volume of the chamber can be determined and the concentration of particles in a specimen within the chamber calculated with precision.

Abstract: One or more optical fibers, forming part of a cable for the transmission of luminous signals, are divided into sheathed sections spliced together inside a junction box having opposite walls provided with a pair of nipples in which the incoming and outgoing cable portions are resiliently clamped. Between these nipples the two sections of each fiber, partly stripped of their sheaths, are bent into a loop along which they are joined together by a sleeve. Adjacent fiber loops of the same cable can be separated within the box by interposed sheets. The loops not only relieve stresses on the bared fiber ends but also facilitate the equalization of ray paths in a multifiber optical cable.

Abstract: A communications cable comprises a single optical fibre enclosed in a sheathing assembly which protects the fibre against shock and bending. The sheathing assembly comprises end members and a protective sheath surrounded preferably by a coiled spring.

Abstract: In a color separation prism system for a color television camera, a bias light source is located at a position substantially displaced from one or the other of the two intersections of (i) a plane including the optical axis of the taking lens of the camera and perpendicular to the plane including the optical axes of the three color light beams incident to the pick up tubes and (ii) the two parallel edges of a prism block formed by the entrance face thereof to which the light from the taking lens of the camera is incident and the upper and lower parallel faces of the prism block parallel to the plane including the optical axes of the three color light beams. The color separation prism system is particularly suitable for use in a system in which the refractive index of the glass constituting the prism blocks is as high as 1.7.