Abstract: A cone for a loudspeaker in which the shear function is more nearly the same at all radii, the shear function being the product of the effective axial thickness at a given radius multiplied by the circumferential length at such radius. The cone is preferably of curved or "exponential" cross section, deeply angled at a central throat but flattening out to approach a plane at the periphery. The cone is made of light, dimensionally stable material characterized by a high velocity of sonic conduction and is preferably in the form of hollow spheres of glass of small dimension in a binder of epoxy or the like. In an alternate embodiment the cone is made of a hard solid acrylic plastic in thin section and with supporting ribs to provide both rigidity and a substantially constant shear function. Encircling the cone is a flexible hinge or "surround". Interposed between the hinge and the edge of the cone is a light collar having axial rigidity to ensure that the edge of the cone remains in a planar locus.

Abstract: Annular metallic blanks which consist of packages of interconnected laminae or of sheet metal strips which are coiled edgewise and whose strata are riveted or otherwise secured to each other are converted into stators for electrical machines by cold forming between upper and lower dies and outer and inner calibrating members so that the inner diameter of each blank is increased during cold forming, that the peripheral surface of the stator has two cylindrical portions flanking a convex median portion, and that the outermost portions of the end surfaces of the stator are formed with annular recesses. Prior to cold forming, each blank is subjected to a preliminary shaping treatment including chamfering the axial ends of its internal and peripheral surfaces.

Abstract: A new and improved butterfly valve, and particularly, an inexpensive seal therefor. A valve body having a fluid passage is provided with a flexible valve seat about the periphery of the passage, while a butterfly valve disc is journalled within the passage for movement between an open and closed position and includes an annular, radially outwardly extending, peripheral lip. The lip receives a C-shaped hoop which may be stamped, rolled or extruded from a corrosion resistant material for sealingly engaging the valve seat when the disc is in the closed position. Suitable sealing means may be interposed between the hoop and the valve disc. The use of such a hoop permits the construction of a more economical valve than those heretofore known.

Abstract: A method and factory for making prefabricated parallelipiped configured sections which are transported to a building site where they are joined to form completed buildings. The factory is an elongated building wherein at one end metal frameworks and beams for floor, wall, ceiling and roof panels are made and rust-proofed. Next, a plurality of paths are provided for manufacture of the panels by delivering concrete material fill within the frameworks, cast in situ at least for the floor panels. The panels are then introduced into a drying area where the concrete dries and hardens and the panels are connected to form basic structural sections and, by overhead cranes, such sections are placed in groups of five on conveyor tracts which include, in endless members, elements that move the groups of sections by pushing against the metal framework of the rearward sections -- there being a framework-to-framework junction of sections with each group.

Abstract: A method for fabricating a liquid crystal display device includes the steps of providing a pair of insulated electrode-carrying plates, depositing on the surface of one of the plates, overlying the electrodes a layer of photopolymeric material approximately 0.0005 inches in thickness, masking and light exposing the photopolymeric layer and thereafter developing a way with a suitable solvent a predetermined area of material to provide a cavity in the photopolymeric layer through which the electrodes on the plate are accessible. On the surface of the second one of the plates whereat the second set of electrodes are located, a layer of photopolymeric material of approximately 0.

Abstract: A turbine blade has a hole through the blade stalk and a controlled area in the stalk cross section on each side of the hole to assure that the blade will separate at the stalk upon over-speed of the turbine wheel. The hole is drilled and reamed and the hole surface is finally machined by chemical milling to eliminate stress risers while maintaining a controlled cross-sectional area to ensure that with selected wheel and blade materials, the blades will separate and reduce the speed of the turbine wheel.

Abstract: A brake force distributor valve for limiting the brake pressure at the rear wheels of a vehicle when the load shifts to the front wheels during braking. The distributor valve includes a movable element which overcomes a spring to interrupt the flow to the rear wheel cylinders when the brake pressure exceeds a value determined by the preload on the spring. The spring abutment is fixed to the housing by shearing the surface of the material of one of the housing and abutment completely through at selected spaced locations about the periphery thereof and forcing the sheared material into a peripheral groove contained in the other of the housing and abutment while a predetermined force is applied to the spring to establish the spring preload and, hence, the response point of the valve.

Abstract: A feeding and assembling mechanism for blanks having a bore and a pin for insertion into the bore comprising a feed means for the blank, and a feeding means for the pin, the discharge of the pin feeding means being above the discharge for the blank feeding means. Mechanism is provided to guide the pins downwardly oriented in a vertical access into a bore in the blank, and the blanks are thereafter rotated ninety degrees until the pin is on a horizontal axis. Supporting structure is then provided to support those blanks into which a pin has been inserted, and yet drop through an escapement those blanks which do not have a pin inserted. Recycling means for both the pins and blanks are provided, one form of which being a gravity recycle back into the feeder means. Specifically as shown, a double track vibratory feed or alternatively a pair of vibratory feeders are employed.

Abstract: A multivane turbulator has been provided wherein at least two "V"-shaped members forming the vanes thereof are disposed with their vertices adjacent one another and twisted about each other such that the pitch of the twist is sufficient to render the turbulator self-supporting with symetrically disposed vanes about a central axis.The method of forming the turbulators includes the steps of bending at least two strips of flat stock into "V"-shaped members and disposing one adjacent the other at their vertices and twisting same until the vanes are self-supporting.

Abstract: A machine comprises a wire station for supplying various wires, a harness board on which a cable harness is to be formed, and a harness laying head movable relative to the harness board for receiving selected one of the wires from the wire station laying the selected wire on the harness board. The wire station comprises a plurality of wire clampers for releasably clamping the respective wires with their free ends protruding approximately a predetermined length towards the harness laying head.

Abstract: An O-ring seal for installation in an LP gas cylinder valve with a method and tool for installing the seal in the valve. The LP gas valve includes an outlet passage opening into a chamber within the main body of the valve which in turn is connected to a passage which opens into a cylinder tank. The outlet passage threadedly receives a hollow cylinder through which a stem projects. The stem includes an enlarged bullet shaped end projecting through an annular seat within the outlet passage and into a tapered portion of the outlet passage. An O-ring seal is installed on the annular seat effecting a seal between the valve and stem while spacing the enlarged bullet shaped end of the stem from the tapered portion of the outlet passage. A plate wrench has a hexagonally shaped hole through which a hexagonally shaped nut on the hollow cylinder projects. The wrench is used to tighten the stem with respect to the O-ring seal. Means are provided on the plate wrench for storing spare O-ring seals.

Abstract: This invention relates to affixing and securing against theft, a radio (AM, FM, FM Stereo, Tape Player or any combination(s) thereof) or the essential circuitry thereof to a motorcycle and encompasses the optional placement of one or more headphone(s) within the protective helmet.

Abstract: Sheet metal rotor wheel for radial-flow fans, turbines, and the like, and method and fixture for manufacturing same by use of explosion welding of a rotor dish to angled legs of the individual rotor blades. The individual rotor blades are formed of a T-shaped cross-section by joining two L-shaped cross-sections together by spot welding, brazing, or the like. The blades are then positioned in a fixture in predetermined relative positions corresponding to their final positions on an assembled rotor wheel. The fixture includes a rigid outer ring having an inner radius corresponding to the outer radius of the rotor wheel. The fixture also includes spacer members having gaps therebetween for holding the blades in position within the ring. The spacer members have an outer configuration corresponding to the configuration of a rotor dish, which rotor dish is held at a spacing from the angled legs of the blades, the rotor dish being covered with a layer of explosive material.

Abstract: A hot air furnace which includes at least one heat exchange unit having at least one mounting flange section defining an opening therein and a plate member having an aperture therein corresponding to at least one of the openings in said heat exchange unit and in alignment therewith with sheet insulating material interposed between said plate member and heat exchange unit by virtue of the said flange being expanded into a plane parallel to that of said plate member to thereby secure the plate member and interposed insulating material in place on said heat exchange unit.

Abstract: A method and apparatus for the elastic attachment of the exhaust manifold to the cylinder head of the motor wherein the manifold is pressed against a gasketed mating surface with the cylinder head by elastic means disposed between the inclined supporting surfaces of the manifold and the cylinder head.

Abstract: A method of forming an electrical network package in which a B-stage thermosetting adhesive material is sandwiched between and adheres together a substrate bearing a network of electric circuit elements, and a protective superstrate. The component package is first heated sufficiently to initiate the formation of the adhesive into a gel. The package may then be cooled, and is momentarily compressed in order to flow the adhesive material into sealing relation with the electric network and to inhibit relative slippage between the substrate and superstrate followed by further heating to fully cure the adhesive.Except for the momentary compression, the entire curing sequence is performed without the application of external pressures, thereby considerably simplifying the requisite machinery. The method is adaptable to mass production techniques by employing a single continuous adhesive tape and lead frame in connection with a multiplicity of substrates.

Abstract: A chassis and tilt bed support structure for a tilt bed trailer, with the chassis being comprised of a pair of elongated frame beams widely spaced apart at their rear ends by a distance substantially coinciding with the axle length and bent inwardly towards each other at their forward ends to provide a pair of relatively closed spaced, parallel, front beam segments on which the front ends of a pair of parallel, truck body support beams are supported. The body support beams are pivotally mounted on the rear end of the chassis; and a single pole drawbar and trailer hitch assembly is rigidly secured to the forward end of the closely spaced, front beam segments of the chassis.

Abstract: A brushing apparatus for carpets and the like has a housing one side of which faces a surface to be brushed and is provided with a plurality of wall portions connected with one another by weakened hinge-like zones so that these wall portions are produced in flat condition and can then be displaced relative to one another to a condition in which they define a trough. A brush extends along the trough and, when rotated in response to movement of the brushing apparatus over the surface, picks up dirt and deposits it in the trough.

Abstract: A plural range pressure regulator construction having a housing provided with an inlet and an outlet separated by a valve seat that is controlled by a valve member that is interconnected to a flexible wall carried by the housing. Biasing means are carried by the housing for acting on one side of the wall to tend to move the wall in one direction relative to the housing, the biasing means comprising a plurality of separate spring means each acting on the wall to provide one pressure range for the pressure regulator construction. The housing has a storage space for storing one of the spring means so that the same will not act on the wall whereby the remaining spring means acting on the wall will provide another pressure range for the pressure regulator construction.

Abstract: The present invention is a lightweight, internally stiffened aerodynamic shell structure with local fittings and a method for fabricating the same. Two typical type structures are the blades and vanes of a turbo fan engine. The invented structure exhibits heretofore unattainable strength and stiffness to weight ratios and a high degree of structural integrity. It is, therefore, particularly advantageous in applications such as the rotating blades in airborne or ground power conversion equipment. It is an aerodynamically shaped structure comprising metallic stiffening material interposed between, and joined to, a pair of relatively thin corresponding metallic face sheets which form the shell skin of the structure. As a function of design requirements, a root fitting, shroud fitting, and tip rib or fitting are solid-state diffusion bonded to the shell structure.