Abstract: A guitar assembly including an elongated, channel-shaped, open-top, neck body upon which are mounted a plurality of longitudinally spaced, transversely disposed, free-spanning fret bars.

Abstract: A screw-bolt having crest-cut-off threads with their heights progressively decreased to not more than 3/4 times the basic height in the screwing up direction at a gradient ranging from 60/100 to 3/100 over that of the axial length of the threaded part of the bolt which is located between the unthreaded part and the complete thread upon setting up engagement with a nut therefor to allow a fraction of 0.1 to 0.2 unengaged with the nut, whereby the fatigue strength is increased in terms of the endurance limit from 6 kg/mm.sup.2 for the prior art bolt and nut to more than 11 kg/mm.sup.2 independently of whether SCM 14 or SNCM 5 steel is used in making the bolt and nut.

Abstract: A fastener element adapted for use as a bolt head, nut and the like. The element includes an operative structure adapted for removable interconnection with at least one other element of a fastener assembly to complete the assembly. A head extends from the operative structure and has an exterior surface adapted to be removably engaged by a wrench for rotation of the element. The head is hexagonal in configuration and has a projection extending from each side of the head a predetermined height less than the height of the head and being circumferentially aligned to thereby cooperate with the edges of each adjoining pair of sides of the head to form a twelve point head portion at the location of the projections while retaining a six point head portion at the remainder of the head. Thus, the fastener element can be used with either a six point or a twelve point wrench.

Abstract: A weather tight fastener, for joining two or more adjacent members, having a flanged sleeve member which is disposed through aligned openings in the members and a rod member having an enlarged end, engaging a portion of the tubular member for collapsing the unflanged end of the tubular member in a controlled fashion. The end of the rod member which is not enlarged, projects from the flanged end of the tubular member and is engaged by a holding plate which is slidable in one direction only. Disposed between the slidable holding plate and the exposed surface of the members to be joined are a rigid washer and a resilient washer which are necessary for proper setting and providing a secure weather tight seal. The rigid washer has a counterbore of the same general size as the flanged end of the sleeve. The steel washer is disposed with the flanged end of the sleeve nested in the counterbore.

Abstract: A fastener is provided for securing an article to a support without making a hole in the support and wherein access can be gained to only one side of the support. The fastener is welded to the accessible surface of the support and the article is clamped to the support by setting the fastener with a blind-riveting tool.

Abstract: A fastener assembly including a screw threaded fastener which has a rigid expander positioned around its shank below the head. A resilient washer having an outwardly directed flange is then provided on the fastener shank and the assembly is completed by a rigid spacer. In use, the fastener is applied to secure a roofing sheet for example to a purlin with the spacer supporting the sheet away from the purlin so as to accommodate relatively soft insulation material disposed between. The expander is forced into the sealing washer during tightening of the fastener to form a water tight seal.

Abstract: A method and apparatus for reloading a centerfire cartridge, the apparatus including a resizing die for resizing the cartridge and a single means for forcing a used primer out of the cartridge and for forcing the cartridge out of the resizing die. A flaring tool is then used to flare the cartridge neck and a priming tool is employed to force a primer into the base of the cartridge. Gunpowder is then placed in the cartridge, a new bullet is forced into the cartridge neck, and the cartridge neck is then crimped against the bullet.

Abstract: A combination throttle kicker and deceleration valve comprising a housing, and a wall dividing the housing. A first diaphragm is provided on one side of the said housing is adapted to engage said wall and prevent the flow of air through an opening in the wall. A second diaphragm is provided on the other side of the said wall, and has an orifice therein. A shaft is adapted to be moved by the second diaphragm upon movement of the second diaphragm away from the wall. The shaft extends exteriorly and is adapted to be linked to a throttle. Passages provide communication between the chambers formed by the diaphragms and the ends of the housing.

Abstract: A feed pressure bypass valve means and actuator means primarily for a single acting servomotor, is provided having a unitary housing construction and an assembly of opposed springs wherein one spring biases a bypass valve to closed position and the other spring is compressed by the servometer piston to act in the opposite direction. The bypass valve is mounted externally of the servomotor as a separate and integral unit and has for its purposes to ensure maintaining a drop in feed pressure as the piston nears the end of its stroke. The provision of the spring compressed by the piston toward the end of the stroke ensures the opening and maintenance of opening of the bypass valve. There can be no instability of steering operation by virtue of the bypass valve closing and the striking of the servomotor cylinder wall by the piston is precluded.

Abstract: An arrangement in the dropping of pressure in either chamber of a double acting booster steering servomotor is provided, such pressure drop starting at a predetermined point toward the end of travel of the servomotor piston in either direction. The invention is characterized by a respective bypass valve in each chamber, spring biased to closed position, and engageable by the piston, to be opened gradually. The piston force is exerted on the bypass valves through a respective spring so as to effect the gradual opening instead of the abrupt opening effected in the prior art. Opening of the bypass valves effects connections which shunt the servopump output to the system oil tank via a differential pressure valve as taught in Lang U.S. Pat. No. 3,878,763 to prevent strong mechanical stresses on the steering linkages at the ends of steering movement. Shunt control takes place through desirably small flow lines and bypass valves which heretofore have been found to produce undesirably abrupt operation.

Abstract: The invention relates to a compressor of the type used in refrigeration systems. In these compressors the piston pin in the transversely extending piston bore is of lesser length than the diameter of the piston such that undesired chambers are formed at opposite ends of the pin. The stroke is normally of a length that the piston pin and these chambers intersect the lower edge of the cylinder. Gas trapped in these chambers expands rapidly with an undesired popping noise when fluid communication is established at the end of the down stroke between the chambers and the interior of the crankcase. Throttling passages are provided between these chambers and the interior of the crankcase to prevent pressure build-up in the chambers and the accompanying popping noise.

Abstract: A woven seamless sleeve including axial yarns forms the inner face of an epoxy resin cylinder for an air operated linear actuator. Under certain conditions, a minute, internal, spiral groove develops in applying the resin. In the operation of the actuator the groove serves to retain lubricant.

Abstract: Method and apparatus for the forming, sealing and closing of packages utilizing blanks created from fiberboard substratum to which sheeting having thermoplastic characteristics is laminated by a moisture-resistant heat-weakenable substance, such as microcrystalline wax. A tubular blank having an interior sheeting lining is first formed from the flat blank, as by forming a fin-type side seam which may be located in one body wall. The end closure is formed by panels hinged to each of the four body walls, with one of these panels serving as the main closure panel and being of sufficient size to overlie the entire end opening. A pair of gusset panels flank the main panel and a short flange panel is hinged to the opposite, parallel body wall. After outfolding the gussets and the flange panel, a continuous membrane seal is created along the three edges of the end opening by heat-sealing the sheeting associated with these panels.

Abstract: This improvement of a vehicle cab temperature control system for a cab having an operator enclosure with a roof and an outwardly exposed air filter attached to the roof includes a blower and a temperature control unit mounted within a duct which is secured to both the roof and to the air filter. The duct is spaced apart from the roof, thereby forming a chamber which receives controlled air from the temperature control unit. The flow of controlled air is produced by the blower as it moves the air through the air filter into the duct through its inlet aperture and then through the temperature control unit within the duct. The controlled air then exits the duct through either the duct's bleed aperture into the chamber or through the duct's outlet aperture into the operator enclosure.

Abstract: A system for use with a conventional building such as a mobile home having an existing roof includes a sheet having dimensions generally conforming to the roof with a central opening therein. A plurality of brace plates extend from the peripheral edge of the roof-sheet combination to the center opening, to hold the sheet in spaced relationship above the roof so as to define a void therebetween communicating with the central opening, and further defining peripheral openings permitting movement of a cooling fluid from the ambient into the void. Sliding and overlapping members are provided for closing the central and peripheral openings in order to define an insulating layer above the roof.

Abstract: Improvements in roof ventilators; improvements in gable type roofing ventilators of the type typically having a vertical stack or chimney with a screening canopy thereover; provision of a dead air space at the top of a stack or chimney underneath and within an overlying hoodlike canopy; provision of a reversing flow channel by association of two hoodlike canopies with a stack, one of the canopies also providing an air capture space or trap at the top of the stack.

Abstract: A false ceiling wherein a frame supports a set of elongated parallel horizontal trough-shaped slats each of which resembles or constitutes a portion of a hollow cylinder. The slats have longitudinally extending openings flanked by elongated marginal portions. The opening of one of each pair of neighboring slats faces upwardly, and the opening of the other slat of such pair faces downwardly. One marginal portion of one slat of each pair of neighboring slats extends into the interior of the other slat of the same pair and vice versa, and such marginal portions are spaced apart from each other to define passages wherein air can flow from the upper side to the underside of the false ceiling or in the opposite direction. The slats whose openings face upwardly collect liquid and/or solid constituents of air which flows upwardly and impinges against the concave undersides of slats whose openings face downwardly.

Abstract: Pressurized fluid supply and control device, for coffee-making machines, comprising an arrangement for generating and supplying a fluid under pressure, control members to allow the fluid to flow intermittently, a bowl containing a charge of powdered material, particularly ground coffee, and adapted to receive the fluid, and a control group effective to hold the bowl closed tight when the fluid under pressure is being supplied, and conversely to connect the bowl to the surrounding atmosphere when the fluid is not being supplied to the bowl to provide a number of alternate supply and venting cycles for the bowl. The control group comprises an elastic pocket to the inside whereof the pressurized fluid is fed. The elastic pocket is inserted in the bowl in the proximity of a top opening of the bowl.

Abstract: A bread baking system in which dough is automatically punched down, the rise times of the dough timed, and the oven turned on and off at the proper times.

Abstract: An oil splatter screen for a deep fat fryer is disclosed which protects the cook and the kitchen from hot oil drops splattered from a deep fat fryer. The device consists of a food basket with a bottom platform for supporting food to be fried, having a transverse dimension which is less than the inside transverse dimension of the frying vessel. A rod is mounted to the bottom platform of the basket, which projects upwardly to a height which is greater than the depth of the frying vessel. The rod supports the basket from above while it is being lowered into the vessel. A splatter screen is slideably mounted onto the rod, having a transverse dimension which is greater than the transverse dimension of the frying vessel's cavity. The splatter screen is supported and remains at the lip of the vessel while the basket is lowered into the cavity of the vessel by means of the rod sliding past the screen.

Abstract: Doughnut frying apparatus has a conveyor extending lengthwise of the hot oil tank and provided with transverse flights with its upper course disposed to carry floating doughnuts from a transverse pickup zone near the infeed or rear end of the tank towards the outfeed end thereof. Successive series of uncooked doughnuts are delivered into the tank in a transverse receiving zone spaced rearwardly of the pickup zone. Means are employed to enable the interval between the delivery of successive series to be minimized by circulating hot oil to provide a stream flowing upwardly through the receiving zone and into the pickup zone preferably also with an air stream directed close to but above the surface of the oil and forwardly through the delivery zone.

Abstract: An apparatus for heating food includes a treating chamber, a multilevel shelving in the treating chamber for supporting the food to be heated; a plurality of blowers arranged in the treating chamber; and heating elements associated with the blowers for generating hot air currents. All the blowers are arranged in a vertically spaced, superposed relationship at one side of the treating chamber and an arrangement is provided for directing the air currents generated by each blower towards another, opposite side of the treating chamber.

Abstract: In an apparatus adapted to transport and imprint indicia around the circumference or portions thereof, of generally cylindrical objects, such as capsules, an improved object carrying device and capsule guide are disclosed that facilitate non-smear processing and easy ejection of the capsules from the device after printing. The capsule guide and carrier are provided with corresponding relief portions formed therein so that indicia imprinted on the capsules are not smeared as the objects are spun about their axes during printing. The capsule carrier includes a pocket to receive and transport the capsules along a predetermined path. The pocket is defined by a pair of opposed wall members that may be bevelled to facilitate easy ejection of the capsules from the carrier printing. Also, for imprinting upon one or both sides of tablets, pills, and the like, a pair of grooved capsule guides are disposed along opposed sides of the transport device.

Abstract: A printer has a stationary electromagnet device, a hammer having a permanent magnet therein, and a resilient member coupled to the hammer. The permanent magnet may be moved upon electrical energization of the electromagnet device to cause the hammer to impact against a character by mechanical energy accumulated in the resilient member.

Abstract: A print hammer mechanism with a flexible interposer selectively moveable from a normal position into the path of a rotating impeller tooth which engages the interposer driving it and the associated hammer toward a print line to impact a print medium with a type die on a moving carrier. The interposer is flexible in the plane of motion of the hammer and the impeller tooth which allows slower and more controlled acceleration of the hammer and enhances the wear of the materials used to fabricate the hammer, interposer and impeller tooth. Uncontrolled oscillation of the flexible interposer and, hence, multiple strikes and multiple rebounds from the print hammer back stop are prevented by means of a mechanical linkage which captivates the interposer to the hammer for travel with the hammer but also allows the interposer to move from its normal position into the path of the impeller tooth and to return to its normal position.

Abstract: 1.

Abstract: 1. A proximity fuze for a stationary mine comprising:(a) a power supply;(b) a vibration sensitive switch having a stationary contact and a vibrat contact, one of said contacts being connected to said power supply;(c) an LC ringing circuit connected to the other of said contacts, said vibration sensitive switch intermittently conducting current from said power supply to said LC ringing circuit when activated by vibrations in the region of said mine thereby setting up a series of exponentially decaying sinusoidal oscillations in said LC ringing circuit;(d) a magnetometer connected to said LC ringing circuit and excited by the sinusoidal oscillations produced thereby; and(e) amplitude discriminating circuit means connected to said magnetometer for producing a firing pulse when the output of said magnetometer exceeds a predetermined value.

Abstract: A bench construction designed for participants in all types of athletic activities. Its light, compact construction allows it to be easily moved and placed wherever it is most accessible to the players. It provides a convenient place to keep clothing, spare equipment, and other articles such as water and towels that may be needed during play, and it also enables participants to rest critical muscles, such as those of the feet, legs, and back, during interruptions in play. The bench construction is particularly suited for tennis because its size and proportions permit it to be placed right next to the net post, which, without interfering with play, is the most accessible spot on the court.

Abstract: To facilitate manual operations, especially in the pharmaceutical industry, there are provided for cooperation with a conveyor belt, particularly designed worktables, a service rack, and an adjustable table having an angle member.

Abstract: The protected counter window comprises a frame incorporated in a partition wall separating the dispensary from the public. There is a peep hole and a transfer and exchange opening in the window. The window has a trough which is pivotally mounted in the transfer opening and is capable of pivoting alternately to the official's side or to the public side without breaking the physical seal of the protected counter window.The latter is applicable to any premises requiring high safety during exchanges between the official and the public.

Abstract: A transaction drawer assembly is provided for use in carrying out transactions through the wall of a building. The drawer assembly fits onto an opening in a building wall and attaches to provide an entry through which transactions can be carried out. The drawer accepts items brought to the building and delivers items outside the building so they can be removed therefrom.

Abstract: Combustion gases from combustion of a coal-in-oil fuel mixture are used as an inert carrier gas in a fluid energy pulverizer used in the formation of the fuel mixture. A portion of the hot combustion gases is separated, cooled and compressed and passed to a heat exchanger where that portion is heated by the remainder of the combustion gases, the hot, pressurized portion led to the fluid energy pulverizer for use as a carrier gas for pulverizing of further coal.

Abstract: A tufting machine which includes mechanism for adjusting the stroke of the needles which is operable from the exterior of the machine and such that the bottom dead center position of the needles remains at a constant level in all positions of adjustment.

Abstract: A sheet having marks corresponding to stitch positions along a sewing pattern curve is mounted on a programmer table. A stylus to be positioned at the mark is removably mounted on a movable member which is moved on the table in orthogonal directions by a pair of pulse motors. There are provided memory medium having a memory area for storing pulses applied to the pulse motors between two adjacent marks along the sewing pattern curve corresponding to at least one address, first control means including a ROM writer for transferring the content of the memory medium to a nonvolatile memory means such as ROM or PROM, second control means for reading the content of the memory medium or of the nonvolatile memory means for producing an instruction pulse train for moving the movable member by the pulse motors, and a cutting tool for forming a groove of said pattern curve through a cloth clamping plate mounted on the movable member by the second control means.

Abstract: A zig-zag stitch sewing machine having a laterally displaceable needle, the displacements of the needle being controlled by a cam arrangement through a linkage mechanism, the cam arrangement being actuated by one or more control members, the linkage arrangement including a pivotally mounted slider, the pivotal axis for the slider being provided on a pivotal lever so that the pivotal axis is displaceable, and a connecting rod which is pivotally connected to the mounting for the needle, the connecting rod being displaceable along the slider, means being provided for displacing the pivotal axis of the slider while its free end is immobilized in one of its terminal angular positions, whereby displacement of the end of the connecting rod along the slider causes a needle carrying bar to be displaced between two terminal decentered positions.

Abstract: A linking machine having a rotatable dial mounting a plurality of radially extending points on which two contiguous fabrics to be joined together are impaled. The sewing linking is provided with at least two needles, with one or more needles operating from opposite sides of the fabrics. One or more needles are located exteriorly of the dial, and each cooperates with a thread guide located interiorly of the dial to form a thread into a chain of stitches. One or more needles are located interiorly of the dial, and each cooperates with a thread guide located exteriorly of the dial to form a thread into a separate chain of stitches. In one form of the invention, the machine has a pair of reciprocal linking needles disposed on opposite sides of the fabrics to be joined, and each needle forms a simple single thread stitch chain.

Abstract: A method is disclosed of forming a seam joining together two edges of a piece of fabric coated on one face with a water-impervious high frequency weldable plastics material, so as to form a water-impervious seam. In the method, the two edges are located together with the said coated faces facing outwardly, a binding strip is located over the said coated faces, the face of the binding strip in contact with the coated faces itself being coated with a high frequency activated material, and a radiofrequency field is applied to the seam to weld together adjacent said coated faces of the binding strip and the fabric. Certain forms of polyurethane and poly(vinyl chloride) are given as examples of high frequency activated materials. A novel seam is also disclosed.

Abstract: A boat mooring apparatus comprising two main units, namely, a boat mooring line apparatus and a boat mooring cleat apparatus, used to releasably secure a boat to a mooring post.The boat mooring line apparatus constitutes a mooring line of a given diameter with several bulges spaced therealong, the bulges having a diameter greater than that of the mooring line, with the distal end of the line comprising a slip-loop. The cleat apparatus includes two substantially parallel spaced apart members which between them define a slot that is as wide as the diameter of the mooring line, but narrower than the diameter of any bulge on the line. The parallel spaced members are transversely registered at one end where they are affixed to a mounting plate for securement to a boat. One member is inverted U-shaped so that it rises from the boat, thereafter extends along and spaced from the boat, and then extends back to the boat.

Abstract: A cable fairing to reduce the "strumming" of a tow cable comprising a pluity of tabs or stubs, having a height radially of the cable, less than the cable diameter, extruded onto the armor sheath of the cable. The stubs are integrally formed in a thermal-setting plastic sheath in a spiral pattern of small angle along the length of the cable. The spiral pattern is reversed at periodic intervals, or two sets of tabs are provided and arranged in opposite-hand spiral patterns criss-crossing within the same cable length.

Abstract: A floating storage facility for storing small boats not greater than a predetermined length. A floor system comprising a network of longitudinal and lateral support members disposed over flotation blocks provides support for the building. A pair of spaced parallel weight supporting beams are disposed centrally over the flotation members on each side of the storage facility. The parallel beams support a plurality of columns which support a pair of parallel spaced crane runway rails disposed along the upper portion of the building. The weight of the building is distributed over the flotation device to provide a central stabilized loading point for the building. The building has a lightweight metal frame cover disposed overwardly with the outer walls.

Abstract: In an industrial dust collector comprising a gas intake dirty air chamber, a filtration clean air chamber, and a set of fabric filter bags mounted within the filtration chamber with the bag interiors in fluid communication with the gas intake chamber having a system for cleaning the filtration chamber which includes a venturi in fluid communication with both chambers to effect cleaning of the collector. A method of cleaning the filtration chamber of an industrial dust collector having fabric filter bags mounted within a filtration chamber with the bag interiors in fluid communication with a gas intake chamber is disclosed comprising the steps of evacuating dust from the filtration chamber and directing the evacuated dust into the gas intake chamber.

Abstract: A liquid dispenser is disclosed which is arranged to dispense a fixed amount of liquid on a workpiece and is then moved away from the workpiece so that no further drops of the liquid fall on the workpiece.

Abstract: A method and apparatus using cold gas jets for producing a substantially uniform layer of cryogenic materials on the inner surface of hollow spherical members having one or more layers, such as inertially imploded targets. By vaporizing and quickly refreezing cryogenic materials contained within a hollow spherical member, a uniform layer of the materials is formed on an inner surface of the spherical member. Basically the method involves directing cold gas jets onto a spherical member having one or more layers or shells and containing the cryogenic material, such as a deuterium-tritium (DT) mixture, to freeze the contained material, momentarily heating the spherical member so as to vaporize the contained material, and quickly refreezing the thus vaporized material forming a uniform layer of cryogenic material on an inner surface of the spherical member.

Abstract: A tank furnace comprises a first container containing a molten flux and connected with a hoisting mechanism, and a second container containing a molten coating metal. The second container is stationary mounted so as to be placed inside the first container when in its upper position. The mechanism for advancing articles into the coating zone is connected with a device for controlling the depth of immersion of the articles being coated. The first container is fitted with electrodes.

Abstract: A powder density control means is provided for use in a photocopier machine of the type in which a photoconductor is charged in accordance with an image to be recorded thereon and is developed by contact with a toner powder attracted thereto from a mixture of carrier particles and toner powder carried by a developer assembly including a replenishment means for periodically adding toner powder. A high value resistance and a bias supply are serially coupled to a magnetic brush of the developer assembly. The voltage across the magnetic brush provides an indication of how heavily the latent image on the photoconductor is being toned. The change in magnitude of the voltage on the brush is sensed and when a predetermined amount of voltage change is detected, an additional amount of toner powder is supplied by the replenisher to the developer unit for such change.

Abstract: A vacuum metallizing apparatus and method for coating the inside of hollow articles, e.g. tap control knobs, in which the article is engaged with a seating of a hollow body so that the interior of the article and the hollow body define a chamber in which high vacuum can be induced through the hollow body. A heating assembly is mounted in the hollow body for vaporizing the coating metal. The heating assembly is enclosed by a shield and may be associated with a shutter that is movable to interfere with deposition inside the article for certain coating metals.

Abstract: Cows are milked by automatic machinery, by diverting the milk initially flowing, to a bypass tank, for a predetermined period of time. The milk is then diverted to a main vessel, to which it flows throughout the milking cycle unless the color of the milk changes as determined colorimetrically, in which case flow of milk is switched back to the bypass tank. Change of color is indicative of the presence of blood or pus in the milk.

Abstract: Apparatus used in conjunction with milking machines for automatically stimulating the cow to facilitate milk let-down. Upon initiation of the milking cycle, the apparatus provides a controlled higher than atmospheric pressure to the air intake port of the vacuum line pulsator. An alternating vacuum and air pressure is thereby applied between the teat cup shell and inflation to provide a massaging action which causes stimulation of the cow and full milk let-down. Timing means are provided in the apparatus to shut off the air pressure to the pulsator a selected period of time after initiation of the stimulation, and to thereafter supply filtered atmospheric air to the pulsator to allow milking to continue in the usual manner.

Abstract: A fuel injection system employs injectors having energizing coils and means for generating an actuating pulse to the injector. The system includes a correction means for applying a correction to the injector actuaing pulse to correct for the effect of at least one incidental system variable on the effective response of the injector to the actuating pulse. The incidental system variables are: the impedance of the energizng coil, the specific resistance of the wire used in the coil and the voltage supply in the fuel injection system. The correction means may be a constant current source drivng an output transistor biased to operate in a proportional conduction region.

Abstract: A cooling system adapted for a liquid-cooled type of two-cycle multicylinder engine. The thick-walled portion of a crank case between adjacent cylinders is provided with a cooling-liquid passage. The delivery port of a liquid pump is fixedly secured to one end of the cooling-water passage at the intake side of the cylinder, while the other end of the passge at the exhaust side of the cylinders is flow connected to liquid jackets in the cylinder blocks.