Abstract: The invention pertains to electric horns for automobiles wherein a metal horn motor housing is assembled to a sound projector formed of synthetic plastic. A metal insert is molded into the projector having a metal flange extending from the projector adjacent a projector mounting surface whereby the insert flange is deformed upon the motor housing to produce an effective mechanical interconnection and assembly of the motor housing and projector.

Abstract: An electronic alarm particularly designed to indicate reverse movement of vehicles. The alarm utilizes a synthetic plastic housing having a cavity defined therein which intersects the housing at an exterior surface. A sound producing diaphragm, the motor for vibrating the diaphragm, and the electronic control circuit, are all mounted upon a diaphragm mounting assembly which is received within the housing cavity forming a cavity cover. The diaphragm is located in opposed relationship to a cavity sound reflective base, and an air passage surrounding the diaphragm mounting assembly transmits sound vibrations through the cavity, and through ports defined in the diaphragm assembly at the cavity opening.

Abstract: An addressable transducer is disclosed for use in monitoring the values of physical conditions in connection with long electric lines, such as telephone cables. Multiple transducers are connected across a single pair of transmission lines which extend from a central station and supply a DC voltage to the transducers. Each transducer has an assigned address in the form of a binary code. An address signal is transmitted on the transmission lines by pulse width modulation of the line voltage. An address detector converts the address to a binary code and the transmitted address is compared with the assigned address. When the assigned address is received, a variable frequency current sink oscillator is turned on and connected across the lines. The oscillator has a frequency determined by a sensor responsive to the physical condition being measured and modulates the line current at that frequency.

Abstract: A system for electronically inspecting fabric for defects wherein a moving fabric is scanned by light sensing apparatus for variations in light reflecting characteristics due to the presence of a defect. The sensitivity of the system is monitored by an automatic background control circuit to adapt the system to the light reflective characteristics of the particular fabric being inspected and alarm and defect counting apparatus indicates and records the presence of a defect. The system permits the inspection to be terminated upon the detection of a defect, or alternatively, the quality of the fabric can be determined by recording spaced defects during successive defect recordable time periods, the duration of such time periods being adjustable.

Abstract: The invention pertains to an electric diaphragm horn and the method of air gap adjustment wherein the horn utilizes an electric coil mounted with a housing which includes a pole piece; a diaphragm being mounted upon the housing including a plunger to be spaced from the pole piece at a predetermined dimension to produce the desired sound output level. The housing bottom wall is deformed to an extent determined by measurements relative to the housing diaphragm mounting surface whereby assembly of the diaphragm to the housing produces a uniform gap between the pole piece and plunger resulting in a consistency of assembled dimensions. Further, the invention includes an electric horn construction utilizing a diaphragm wherein the motor chamber is vented to the atmosphere through a projector mounted upon the horn housing.

Abstract: A seawater activated battery plate, and a method of making the same, utilizing an electrically conducting grid and an active reducible material primarily constituting lead chloride adhering to the grid such that the grid is exposed at a surface of the active material, the material adjacent the grid primarily constituting porous lead and a metal chloride. The battery plate is characterized by its inexpensive method of manufacture, its quick activation even in cold seawater, its absence of significant voltage peaking at initial discharge and uniform voltage generation during discharge.

Abstract: The invention pertains to apparatus for sensing the presence of a seam in a moving strip of fabric being proccesed, the detection of a seam actuating a control circuit which modifies the fabric processing to accomodate the seam. An optical seam detector determines the rate of movement of the fabric, initiates a electronic counter producing a voltage inversely proportional to the rate of fabric movement. An electronic timer, also initiated by the sensing of the seam, receives and evaluates the velocity determined voltage and produces a timed actuation of the fabric processing apparatus corresponding to the seam arriving at the processing station. The disclosed circuit is capable of actuating two fabric processing stations sequentially arranged in the direction of fabric movement, and the circuitry resets itself upon initial seam detection.

Abstract: A seawater activated battery plate, and a method of making the same, utilizing an electrically conducting grid and an active reducible material primarily constituting lead chloride adhering to the grid such that the grid is exposed at a surface of the active material, the material adjacent the grid primarily constituting porous lead and a metal chloride. The battery plate is characterized by its inexpensive method of manufacture, its quick activation even in cold seawater, its absence of significant voltage peaking at initial discharge and uniform voltage generation during discharge.

Abstract: The invention pertains to a defect detection system for inspecting fabric wherein fabric is scanned by electronic light-sensing apparatus for inconsistencies in light reflecting capability and defects produce electronic signals which are counted, and preferably, are automatically counted with respect to a predetermined time interval wherein fabric manufacturing apparatus may be automatically monitored to maintain a predetermined quality of product. Preferably, infrared frequencies are utilized for defect sensing purposes and electronic signal retention counting and timing apparatus automatically terminates fabric production if defect occurence exceeds a predetermined frequency in a given time interval.

Abstract: A station for inclusion in roller systems which permits cartons to be packed adjacent a primary roller conveyor and introduced onto the conveyor central region when filled. The packing station includes a carton packing conveyor movable under power driven rollers actuated when the conveyor is translated toward the primary conveyor. Simultaneously with translation of the packing conveyor transfer conveyor means are elevated between the rollers of the primary conveyor receiving the carton from the packing conveyor assuring that the carton will be substantially centered on the primary conveyor whereupon the power operated transfer conveyor lowers the carton onto the primary conveyor.

Abstract: A muffler clamp of the type utilized to interconnect telescoping tubular cylindrical members employing U-bolt and saddle. The saddle is formed of a single sheet metal plate folded back upon itself at a rear edge wherein the superimposed portions together define a saddle having a concave, semi-cylindrical, clamping edge and lateral edges. Recesses are formed in the portions to define openings for receiving the legs of the U-bolt. The lateral edges of the saddle are welded with a continuous bead to maintain the saddle assembly.

Abstract: A transducer for proportionally indicating small quantities of gas flow utilizing a rolling piston in association with a flexible electrical conducting band engaging terminals within the piston chamber. Gas flows from the chamber at an increasing rate proportional to piston displacement and the transducer is characterized by its low friction operation and capability to accurately sense low rates of gas flow.

Abstract: A sonobuoy deployment system wherein a plurality of sonobuoy components are housed within a casing adapted to be dropped into the water, either from air or marine craft. The casing has a negative buoyancy, and houses a float deployment mechanism activated upon the casing entering the water. Actuation of the float deployment mechanism deforms a metal release plate previously holding a float within the casing, the float inflates, and as the casing sinks in the water the sonobuoy components are deployed from the casing upper end by cable connections attached to the float. Parachute structure may be mounted upon the release plate for automatic separation from the casing upon actuation of the float deployment mechanism. The utilization of a negatively buoyant casing, and deployment of the components from the casing upper end, permits the casing to quickly sink to significant depths, permitting the sonobuoy transducer components to be quickly located at the desired operating depth.

Abstract: The invention pertains to a pressure sensing transducer employing an evacuated bellows wherein sliding electric contacts are mounted upon the bellows' movable portion. The sliding contacts traverse over a printed circuit board having conducting portions defined thereon connected to electrical resistances whereby pressure variations imposed upon the bellows position the contacts upon the conducting portions to produce an electric signal. A variety of adjusting means are utilized to adjust the position of the printed circuit board to the bellows, and the "span" of the conducting portions in the direction of contact movement is selectively varied by forming the conducting portions of a wedge shape and laterally adjusting the printed circuit board.

Abstract: Apparatus for seating and inflating tubeless tires, particularly tubeless tires of large sizes, wherein a wheel having a tubeless tire placed thereon is elevated into engagement with an annular wheel rim seal ring and a tire sidewall seal ring and held by a predetermined force. The sidewall seal ring maintains a separation between the upper tire bead and upper wheel rim, and an annular chamber defined between the seal rings is pressurized with air permitting air to enter the tubeless tire between the upper tire bead and wheel. The pressures exerted upon the sidewall seal ring during inflation are sufficient to lower the wheel and tire permitting seating of the tire bead and wheel rim. Lost motion means support the wheel rim seal ring so that sealing thereof with the wheel rim is maintained during lowering of the wheel and tire under inflation forces, and the seal rings are mounted for vertical adjustment to permit ready accommodation of the apparatus to various sizes of wheels and tires.

Abstract: An electromechanical transducer employing an arcuate piezoelectric shell element having lateral edges affixed to a restraining member wherein stresses produced in the element by electrical energy produce element flexural vibrations. The piezoelectric shell element and restraining member are located within a chamber defined by a boot and rigid end caps attached to the restraining member. Hydraulic fluid within the transducer chamber equalizes pressures upon the shell element functioning as an acoustic coupling and as a pressure equalizer. In an embodiment of the invention a pair of piezoelectric shell elements are attached to opposite sides of a planar restraining plate.

Abstract: The invention relates to geophones and/or seismometers utilizing a casing housing a permanent magnet and a coil mass resiliently supported within the casing for movement relative to the permanent magnet along a primary axis, and wherein the mass is movably supported relative to the casing upon diaphragm springs utilizing involute spring elements. Undesirable vibrational responses occurring in the diaphragm springs resulting from orthogonal forces are suppressed by partially filling the void within the casing with a damping fluid wherein the several involute spring elements of a spring are immersed or exposed to the damping fluid in varying degrees to damp resonant narrrow band orthogonal vibrations within the spring elements and permit accurate sensing along the primary axis over wide frequency ranges.

Abstract: A damper for use in submerged hydrophone suspension systems including an elongated mass cylinder defined by a tube of flexible synthetic plastic film utilizing a check valve located at each end permitting water to enter the tube and preventing egress. Additionally, each tube end is provided with a disk transversely disposed to the tube length and of a diameter substantially greater than that of the tube to provide drag and hydrodynamic mass damping. The tube and disk are of a configuration to eliminate vortex shedding and the entire damper assembly is capable of being folded and packed within a concise configuration prior to deployment.