Abstract: A method and device for measuring strain in which the resistance of a layer of piezoelectric semiconductor material is measured across a dimension along which the resistance is strain sensitive by a gauge factor of at least 100.

Abstract: .Iadd.In a method and apparatus for controlling musical sounds there is provided a housing with an inner cavity and a mouthpiece forming an air channel and a loudspeaker cone for vibrating the air in the inner cavity for introducing sound energy into the oral cavity of a player via the mouthpiece. The sound energy is acoustically monitored by a microphone which produces an output control signal that is used to control the pitch of an electric sound generator in relation to the size of the oral cavity. .Iaddend. Means forming an air channel is connected between the output of .[.a.]. .Iadd.the .Iaddend.loudspeaker and the input of .[.a.]. .Iadd.the .Iaddend.microphone. The output of the microphone is amplified by means of an amplifier, the output of the amplifier being fed to the speaker, an acoustical feedback path thus being formed between the speaker and the microphone.

Abstract: The keyslot of a railway coupler shank is modified to eliminate the interference between the coupler shank and draft key during conditions of buff or draft during vertical curve negotiation of the cars when traversing uneven track. The upper and lower walls of the keyslot diverge from the rear bearing surface of the keyslot adjacent the butt of the coupler shank. Thus the keyslot opening is wider in the front portion than at the rear portion.

Abstract: A tool for cold pressure welding workpieces such as coaxial cables together. The tool has a compact arrangement so that it may be hand held and operated. A hydraulic pump and motor are incorporated for providing a force amplification which lends to the compactness and light weight of the assembly. The hydraulic motor operates pairs of dies which dies first grip the ends of the workpieces to be welded and then force these ends into engagement to achieve a cold pressure weld. A pressure relief valve is interposed in the hydraulic circuit for limiting the force applied to the dies. The dies are held in pivotally supported parts of the tool so that the tool may be conveniently opened for inspection, replacement or cleaning of the dies.

Abstract: An easy packing deep container is made from a cut and scored blank of paperboard or the like and comprises opposed pairs of main panels connected along lines of fold to define a tube. One of the main panels is split and is composed of half panel sections part of which are overlapped and joined by gluing or the like. The unjoined parts have scores commencing at the point where they are joined and terminating at corners thereof to define triangular shaped subpanels which may be folded out of the way for loading of the container. Closure flaps extend from one end of the main panels and are foldable to position to define an end closure for the tube. Other closure flaps extend from the opposite edges of the split main panel and are foldably connected thereto to define a pair of minor closure flaps.

Abstract: Highly-stable graft copolymer dispersions are prepared by the in situ polymerization in the presence of a free radical catalyst of a vinyl monomer in a polyol containing an essential amount of unsaturation. The dispersions are low-viscous liquids which may be advantageously employed in the preparation of flexible urethane foams having enhanced load-bearing properties.

Abstract: A pattern capable of reducing thereon a precious metal is generated on a suitable substrate by first coating selected portions of the substrate with a solution, called a photopromoter, which contains a metal salt. The metal salt possesses two characteristics:(a) the oxidation state of the salt (i.e., of the metal ion) is alterable (either increasable or decreasable) by exposure of the salt to radiation of the proper wavelength; and(b) in either the original or the altered oxidation state (but not in both states) the salt is capable of reducing a precious metal, e.g., a metal of the platinum group such as palladium, platinum or rhodium, from a salt thereof.The photopromoter-coated substrate is next selectively exposed to the proper wavelength radiation to produce a pattern of the photopromoter salt capable of reducing the precious metal. The remainder of the salt is incapable of reducing the precious metal.

Abstract: A forming method in which members are forced together at an interface by causing parallel currents to flow in adjacent conductors, thereby forcing the conductors toward each other in a direction generally normal to the interface.

Abstract: The present case is directed to a number of illumination systems making use of lamps and reflectors having predetermined optical configurations and arranged to insure minimal glare in the eyes of an operator using the equipment in which the illumination systems are incorporated. A first version involves a stationary paraboloid reflector cooperating with a moving parabolic cylinder reflector to illuminate an original document during a copying operation. In a second version, the moving reflector is split into two reflectors each having distinct parabolic configurations and different focal lengths. In still another version, only a single reflector is arranged for movement during scanning of an original document to project a line of light and has a predetermined configuration which is paraboloid in one direction and substantially elliptical in a direction transverse to the first direction.

Abstract: A continuously variable resistance attenuator is described in which the signal conductor of a distortionless lossy transmission line is employed as an attenuation resistance uniformly distributed along such line, and the connection of an output contact is moved along such signal conductor to change the attenuator setting. The transmission line has a plurality of separate shunt resistors of equal value extending between the signal conductor and the ground conductor of the line and uniformly distributed along the line to provide a lossy line of uniform characteristic impedance. The input end of such lossy line is connected to a non-lossy line of the same characteristic impedance, and its other end is terminated in a termination resistor equal to such characteristic impedance.

Abstract: An intruder detection system comprising a line adapted to be located substantially at ground level and consisting of an elongated high permeability magnetic core on which is wound a coil in the form of successive sections of respectively opposite winding handednesses, a high gain low noise amplifier coupled to the line and a detector coupled to the amplifier and adapted to be coupled to an alarm system.

Abstract: A motorcycle helmet has two halves which may be detachably secured together for use or separated for easy storage in one or more of the saddlebags of a motorcycle. The two halves come together at the central vertical plane that extends from the front of the helmet to the rear and thereby divides it into a right half and a left half that are mirror images of each other.

Abstract: Internal or integrated belt, for a garment such as a skirt or pair of trousers, which is constituted of a band, of any suitable material, folded around a reinforcing piece, to which band there is firmly attached a tape, between which tape and the band there is inserted the upper edge of the fabric constituting the garment.

Abstract: The tendon prosthesis of the invention consists of a core formed of from a synthetic, preferably hydrophilic linear polymer oriented substantially in the direction of the main longitudinal axis of the prosthesis, having a tensile strength exceeding 100 kg/cm.sup.2 and an elastic elongation of 8 - 50 percent, preferably 12 - 25 % of the resting length, and a sheath consisting of one or more layers of a hydrophilic, substantially non-oriented, physically or covalently crosslinked polymer with an equal or higher elastic elongation and an approximately equal or higher hydrophilicity than that of said core. The material of the core and particularly that of the sheath are permanently compatible with living tissue.

Abstract: An electrical rotator designed as a prosthetic joint, useable as a remote manipulator and particularly suitable as an electric elbow providing very light weight, high strength, and low cost, incorporating among other features a planetary roller wave generator, totally enclosed motor, integral molding, and a planetary race to achieve desirable performance characteristics.

Abstract: A surgical implant is produced by coating a metallic substrate with enamel. The metallic substrate provides structural strength and the enamel provides chemical stability, resistance to wear, tissue compatibility, progressive ingrowth and electrical insulating properties. The implant may be produced by coating a portion of the metallic substrate with a partially crystallized enamel, and then positioning the implant on a firing support with the partially crystallized enamel in contact with the support and coating the remaining non-enamelled surface.

Abstract: A total ankle prosthesis having a tibial component implanted in the prepared distal end surface of the tibia and a talar component implanted in the prepared proximal end surface of the talus which cooperate to provide an articulated ankle joint, is provided with malleolar components which function as interpositioned membranes for preventing the fibula from rubbing against the bone on the outer side of the talus and/or the talar component and the medial malleous from rubbing against the bone on the inner side of the talus as well as the talar component of the prosthesis. These malleolar components, or shields, are described as associated with a prosthetic device including a distal tibial implant having a convex surface facing the talus, and a proximal talar implant having a convex surface engaging and cooperating with the convex surface of the tibial component, which permits flexion, rotation and sliding movements substantially reproducing the movements of the normal human ankle.

Abstract: A control for the outlet of a liquid supply tank such as, for example, the water tank of a toilet, utilizes the retention or escape of air trapped above a valve float of the control to seat and unseat the valve against the outlet respectively. One embodiment has a standpipe extending vertically and centrally through the upper air trapping housing of the control for supporting such housing while the float reciprocates slidably along the standpipe between its lowered and buoyed positions. A second embodiment is adapted for use in existing installations wherein the standpipe is offset laterally from the outlet, the standpipe thus extending outside of and supporting the housing while the float is guided in its vertical reciprocation by internal ribs on the housing.

Abstract: A plumbing fixture is provided with means for preventing flooding by obstructing the waste outlet thereof, such means being an overflow chamber along the edge of a bowl or basin, further provided with an electrical probe within the overflow chamber to complete an electrical circuit between the probe and the basin when the water level bridges the gap therebetween, thereby actuating a normally open solenoid valve to closed position for shutting off the supply of running water to the basin. The invention is applicable to a combination lavatory and water closet fixture for preventing flooding from either the bowl of the lavatory, or the bowl of the water closet, or both by providing such means for both bowls.

Abstract: A plurality of like, parallel, transversely extending assemblies connects an upper frame and a lower frame together. The frames are alike, each being generally rectangular and having an open center, and are disposed in parallel horizontal planes with the upper frame above the lower frame. The assemblies allow the upper frame to be moved downwardly towards the lower frame while being always maintained in a horizontal plane.Each assembly includes two opposed roller means that are pushed to roll inwardly towards each other whenever the upper frame is pushed downwardly. A tension spring biases each roller means outwardly, to maintain the upper frame in its original position when no weight rests upon it.The entire device can rest upon a suitable support.The upper frame accommodates a removable padded upholstered board constructed to resemble the top of a box spring.

Abstract: An adjustable cot is disclosed having an adjustable knee comfort device which comprises a folding planar surface extending in the same direction as the leg supporting portion of the cot and intermediate the ends of the leg supporting portion whereby the knee comfort device is adjusted from a planar configuration to an upwardly projecting configuration substantially in the area of the leg supporting portion of the cot that provides support for the section of the leg under the knee.

Abstract: A bed-fitted patient restraining device comprises a mattress cover fabricated to conform about the top mattress of a bed; and a restraint jacket including a pair of complementary panels corresponding to front panels of a sleeveless bodice garment, the panels being secured at their upper ends and sides corresponding to sides and shoulder portions of the garment, with openings through which the patient's arms may be disposed, matable edges of the jacket panels being provided with fasteners, arm restraining straps disposed centrally at the sides of the jacket panels, and a crotch restraint.

Abstract: A therapeutic aid comprises a fluid-filled cushion formed from sheets of synthetic plastics material welded together with a weld line dividing the interior of the cushion into two compartments. This weld line is interrupted to provide a flow opening allowing fluid to flow between the two compartments and the portions of the weld line adjacent the opening having rounded edges and are of increased width.

Abstract: The pad assembly is made up of three pads of resilient foam material assembled one on top of the other, the center pad having a greater density than the outer pads. The center pad has three cut-out openings at locations corresponding to the maximum pressure points exerted by a person sitting on the pads, these openings including a filler foam of density less than that of the outer pads, the overall assembly distributing pressure against a person seated thereon.

Abstract: Improved method for operating an automatic clothes washing machine of the type in which an agitator is oscillated by means of a drive mechanism to secure agitation of the clothes. The present invention provides a method wherein the clothes are immersed in a receptacle containing a washing liquid, the clothes are subjected to agitation with scrubbing action in a lower portion of the receptacle by means of the aforementioned agitator under conditions sufficient to force the clothes radially outwardly toward the perimeter of the receptacle, upwardly toward the top of the receptacle and then radially inwardly. The clothes are intermittently forced downwardly by an augering action which directs the clothes to the zone of agitation with scrubbing action. The clothes are thus subjected to numerous rollover cycles in passing through the washing liquid, thereby ensuring positive washing action.

Abstract: A swimming tail is formed by a pair of elongated flippers of substantially identical exterior shape adapted to be used in side by side relationship. Each flipper includes an elongated fin of teardrop cross-section which tapers to a point. Foot receiving openings within the two flippers are oriented in opposite directions relative to the exterior shape of the flippers.

Abstract: An article of footwear and a method of making the same which comprises forming a length of elastic webbing into a ringlet and embedding the lower longer edge of the "upper" so formed in elastomeric composition which takes a set at low temperature to form a unitary sole and heel inseparably bonded to the elastic upper. If the sole is made to be worn over athletic shoes of the type equipped with spikes or cleats, the interior of the sole is molded to provide cavities accommodating such spikes or cleats. The rims of these cavities bear against and support the rim areas of the sole and heel of an athletic shoe thereby preventing the spikes from penetrating the sole of the footwear. The elastic webbing is tailored to shape merely by forming a dart crosswise of the midportion of the toe end thereof.

Abstract: A frame has an inclined surface over which slides a carriage having a pair of screen mounting elements for supporting opposite screen ends of a stencil. A washing tube having spray nozzles and a brush is fixedly positioned such that movement of the carriage brings a stencil carried thereby to a position over the washing tube. An ink tube has one end supported by the washing tube and another end supported by the frame, such that movement of the carriage separates the stencil from the ink tube.

Abstract: A rug scrubbing machine for cleaning variable depth sculptured rugs and the like which features an arrangement permitting selective tilting of the frame carrying the scrubbing brushes. Variation in the tilting angle is achieved by pivotally mounting the front wheel, with means for selectively controlling the orientation of the bracket carrying the front wheel. Also provided is "free floating" axial movement of the brushes so as to accommodate varying textures and thicknesses of the rugs to be cleaned, thereby foreclosing any need to adjust the device manually as rugs of different characteristics are encountered except insofar as different tilt angles are called for.

Abstract: An electrically operated wringer for a conventional floor mop has a two step switch operated by movement of a hinged section of trough on which a wet mop is laid. At the first step of the switch a circuit is closed starting a motor for the wringing rolls. At the second step a relay is actuated causing the motor to reverse the direction of the rolls and back the mop out of the trough. When the mop is lifted clear, the switch opens and breaks the circuit.

Abstract: An inverted channel member is placed over a surface having particulate or similar matter upon it. Air is forced through the channel member to create a vacuum within the member which causes the matter upon the surface to be picked up and blown from the surface and out the channel member.

Abstract: A curtain board includes a base member having a planar portion which is mounted along a ceiling. A front portion extends outwardly and downwardly from this planar portion terminating in a front edge which is spaced from the ceiling. A curtain slide arrangement is mounted within and extends along the planar portion of the base member. A front board is attached to and extends downwardly from the front edge of the base member to mask the slide appartus. An extension projects outwardly and downwardly from the rear edge of the base member to cover irregularities which may be present in adjacent wall and ceiling surfaces. A vertical extension projects upwardly from the upper edge of the front board to mask irregularities in the adjacent ceiling surface.

Abstract: A lock hinge preferably, but not exclusively, for use with a hatch cover structure for a transportation vehicle. The lock hinge comprises a latch bracket and a base bracket. The base bracket is provided with a pivot bar. The latch bracket has a saddle member defining a hinge seat with a mouth opening for receiving at least a portion of the pivot bar therein. The latch bracket further is provided with a latch member having a lever end and a gate end. The latch member is interconnected to the saddle member by a flexible plate whereby the gate end is displaceably positioned adjacent the mouth opening of the hinge seat to retain the pivot bar captive in the hinge seat to interconnect both the latch and base brackets. When secured to a hatch cover, which normally closes the hatch opening in a wall of the vehicle, at least one lock hinge is secured on a respective one of a pair of opposed sides of the cover.

Abstract: A pneumatic dust collecting system for a fiber processing machine which includes a tank having a chamber therein within which separate streams of dust and reusable fibrous material are received and collected. The tank contains an air expansion compartment adjacent the receiving and collecting chamber and shares a common wall which functions as a filter. A blower assembly is positioned within the tank and is adapted to apply suction to the air expansion compartment so as to draw air from the chamber via the compartment and to force a stream of pressurized air from the tank to an air pressure stabilizing chamber located adjacent one end of the fiber processing machine. An air manifold having a plurality of spaced discharge nozzles is connected to the air pressure stabilizing chamber and is adapted to discharge a blanket of air beneath the machine.

Abstract: A belt assembly for an operating room gown comprising, an elongated belt associated with the gown and having an end section for closing the gown. The belt assembly has a protective member removably positioned on and covering an outer end of the one end section to prevent contamination of the one end section while handling the belt. The belt assembly also has means for releasably retaining the protective member on the outer end of the belt to prevent the protective member from prematurely slipping from the belt.

Abstract: A cloth stuffing chamber or container, preferably a tube with entrance and exit portions, is provided with means for preventing backward movement of the cloth. This means is preferably in the form of a fixed ring at the beginning of the exit portion having around its inner surface at least several segments of wire which are slanted toward the exit portion of the tube. There is provided between the entrance and fixed ring a movable ring with wires or pins also slanting in the same exit direction, which ring is reciprocated by a drive, such as a cam and follower. Cloth is introduced into the entrance portion of the chamber and passes through the two rings, and as the movable ring reciprocates, its slanted wires move the cloth forward on the forward stroke and on the reverse stroke the slanted pins of the fixed ring prevent the cloth from moving backwards.

Abstract: Apparatus for manufacturing expanded sheet stock is disclosed. The apparatus includes a stationary knife having a cutting edge defining one edge of a strip feed slot. While the strip is fed through the slot, a movable knife passes across the slot to form half-diamond-shaped openings in the strip with each stroke. The movable knife has a cutting edge which is defined by a plurality of adjacent obelisk teeth and those teeth form the half-diamond openings during each stroke. The movable cutting knife is driven relative to the stationary knife in planar alignment therewith and in simple harmonic motion while the strip is fed through the slot so that any point on the cutting edge of an obelisk tooth sequentially shears the strip in a recurring sequence to provide half-tooth spacing between successive cuts. Such spacing results in a characteristic diamond-shaped opening in the expanded metal.

Abstract: Apparatus for manufacturing expanded sheet stock is disclosed. The apparatus includes a stationary knife having a cutting edge defining one edge of a strip feed slot. While the strip is fed through the slot, a movable knife passes across the slot to form half-diamond-shaped openings in the strip with each stroke. The movable knife has a cutting edge which is defined by a plurality of adjacent obelisk teeth and those teeth form the half-diamond openings during each stroke. The movable cutting knife is driven relative to the stationary knife in planar alignment therewith and in simple harmonic motion while the strip is fed through the slot so that any point on the cutting edge of an obelisk tooth sequentially shears the strip in a recurring sequence to provide half-tooth spacing between successive cuts. Such spacing results in a characteristic diamond-shaped opening in the expanded metal.

Abstract: Method of manufacturing image display apparatus having a photocathode which is proximity focussed with respect to a micro-channel plate, comprising the steps of: positioning a photocathode substrate adjacent to the input face of a microchannel plate, the substrate having a surface facing the microchannel plate which may be altered by ion radiation bombardment; directing ion radiation from the channels of the microchannel plate by imposing a suitable voltage potential across the microchannel plate in a vacuum atmosphere to alter the surface of the substrate in a pattern of individual areas corresponding to the channels of the microchannel plate; forming a bowl-shaped photo-emissive recess at each of the altered individual areas; and spacing the substrate from the microchannel plate by a distance which results in each bowl-shaped photo-emissive recess being proximity focussed on the input aperture of the same channel that defined the individual area at which the bowl-shaped photo-emissive recess was formed.

Abstract: An annular work piece, such as a large pipe, is prepared for welding end-to-end to a similar piece, by a combination of cutting or machining and swaging or cold-rolling, to form bevel, land, and an annular fin-like projection which will better control penetration. In its apparatus aspects, an internal clamp mechanism is used to hold the pipe against rotation while also keeping it essentially circular in outline, a series of cutting tools, preferably complementing each other, is driven around the pipe and end for exterior and interior bevel surfaces with a more or less plane land surface between them. Rollers which serve to constrain and guide the cutting tools are thereafter employed to swage or cold-work the interior of the pipe end to form a small sharp-edged annular projection which serves as a heat sink to control and limit penetration of molten metal from an external electric arc into the interior of the joint. A supplementary back-up or chill may be used for further control, if needed.

Abstract: A cutting tool includes a tool holder and a cutting bit secured to the tool holder by a clamping jaw. The tool holder has a recess defining a seating surface against which the clamping jaw bears to secure the cutting bit to the tool holder. The cutting bit has cutting means on both longitudinal end portions, and the position of the cutting tool on the tool holder may be changed so that either cutting means may be used. The recess in the cutting bit is constructed and arranged such that the cutting bit may be mounted in two different positions on the tool holder utilizing the same recess for accommodating the clamping jaw.

Abstract: A rotary cutter body has at least one recess, adjacent its periphery, in which there is loosely received a cutting insert the cutting edge of which is parallel with the rotary axis of the cutter body. The insert is held in fixed position in the recess by a cylindrical locking pin having thereon a plane surface engageable with a plane surface within a recess in the insert so as to wedge the insert between abutment surfaces of the recess in said cutter body.

Abstract: An improved fairlead roller assembly wherein the wear portion is removably installed to permit facilitated maintenance and replacement. The wear portion of the assembly is defined by a tubular element which is captured endwise between improved end members and removably secured thereto by readily removable securing structure.

Abstract: A mechanism employed for cutting and stripping a plurality of wires simultaneously by means of a single lever which is moved in a first direction to cut the plurality of wires and in a second direction to strip a length of insulation from the cut wires. The mechanism includes a base support and a carriage pivotally mounted thereto. The carriage supports the wire knife and anvil, the stripper knives, a cam arrangement for actuating the wire knife and stripper knives and the control lever. An automatic lock is provided which prevents the carriage from pivotting to strip the wires when the cutting operation is being performed and also prevents return of the wire knife and stripper knife when the stripping operation is being carried out. The mechanism is employed in this embodiment with wire positioning and clamping means. An assembly is used to stress the clamping means to insure the retention of the wires held therein.

Abstract: An apparatus for sequentially feeding non-axial lead electrical components in their manufacturing strips from a magazine to a forming station where they are removed, bent into a substantially axial lead configuration and taped between two pairs of continuous ribbons of tape. The leads are straightened while in the manufacturing strip by being placed under tension.

Abstract: A valve comprising a valve body and a valve member, said valve body and valve member having cladded seats of hard metal metallurgically connected thereto, and a method for manufacturing said valve comprising a step of metallurgically connecting said seats to the valve body and the valve member through an explosive cladding process.

Abstract: A heat fuser roll and the method of manufacture thereof. The roll comprises a deformable layer on a base member and the deformable layer is produced by coating the base member with a silicone gum material containing no curing agent and treating the coated base member by heating in an inert atmosphere to a temperature at which substantial cross-linking occurs for a predetermined time to produce a tough long-wearing silicone rubber deformable layer.

Abstract: Fixture for use in locating wires in wire-receiving jigs comprises a fixture block having an upper surface upon which locating bosses are provided for locating two wire jigs in parallel spaced-apart relationship. A slot extends into one end of the block and has an inner end which is between the locating bosses. A cable containing a plurality of wires is positioned in the slot with the cable axis extending normally of the upper surface. The wire jigs are positioned on the bosses and the wires can thereafter be positioned in the wire jigs. The cable can be located at different relative positions in the slot for different wiring configurations in the connector to which the wires are later attached.

Abstract: Apparatus is disclosed for assembling first and second tubular components in a telescoping, press-fit relationship with each other. The apparatus includes a rotatable, motor driven plate including on the periphery thereof a plurality of component support means, a portion of each being spring biased in a radially outward direction. The two components are partially telescoped into each other by hand and then are loosely mounted on the support means which travel along an arcuate path that is in opposition to a fixed cam having a decreasing radius with respect to the axis of rotation of the rotatable plate. The cam surface bears against and forces one of the components into the other component as the support means move therepast. A movable cam section is also provided to accommodate tolerance variations in the components. The movable cam section is positioned proximate the exit end of the fixed cam and is normally biased in a direction that will push the inner component further into the outer component.

Abstract: In the manufacture of a slide fastener stringer, the relative count of fastening elements per unit length of the tape of the stringer being manufactured is continuously monitored and used as a feedback control to adjust the relative rate of advancement of either a train of fastening elements or a stringer-tape-forming member.