Abstract: The invention consists of an improved method of constructing and installing digital counting devices, such as odometers, digital time recorders and digital gauges, consisting of a self-destructing and tamperproof "first" or left counting wheel. The numeral of the "first" counting wheel is obliterated by mechanical (or other) means after such numeral has passed the viewing window, thereby making it useless to attempt to "wheel back" the counter to indicate lesser usage, and thereby promoting safety and honesty to and by user, seller and buyer of the machines or devices to which the digital counter is attached. Such improved counters are practically irreversible.

Abstract: The invention consists of an improved method of constructing and installing digital counting devices, such as odometers, digital time recorders and digital gauges, consisting of a self-destructing and tamperproof "first" or left counting wheel. The numeral of the "first" counting wheel is obliterated by mechanical (or other) means after such numeral has passed the viewing window, thereby making it useless to attempt to "wheel back" the counter to indicate lesser usage, and thereby promoting safety and honesty to and by user, seller and buyer of the machines or devices to which the digital counter is attached. Such improved counters are practically irreversible.

Abstract: A diaphragm for a loud speaker is manufactured by impregnating a diaphragm blank made of natural or man-made fibers or formed by molding a synthetic resin, with a water-soluble inorganic flame retarder, and thereafter with an aqueous solution of a fluorine containing water repellent and oil repellent agent, and then by heating and molding into a speaker diaphragm.

Abstract: This invention has for its object to do away with the defects of the prevailing transfer pinion carrier plates made of metal. In the process of manufacturing a metallic carrier plate, a separately prepared small shaft for supporting the transfer pinion should be planted vertically to the plate with care. Further, as the transfer pinion is only partially surrounded by the plate, a gap is always formed between each pair of the figure wheels of the completed odometer. Such a gap not only admits the intrusion of dust and dirt into the odometer but invites the destruction of the transfer pinion permitting the insertion of a sharp tool through the gap inadvertently or by a malicious person. All such defects may be effectively avoided by producing carrier plates with plastic materials in accordance with the present invention.

Abstract: A resilient roller is described having a rigid shaft and a flexible sleeve spaced apart by a resilient member to which axial pressure is applied. The axial pressure translates through the resilient member to become outward radial pressure. The roller of the invention is sufficiently resilient across its functional surface to maintain substantial contact and a substantially uniform nip width along its line of axial tangency with a cooperating surface.

Abstract: The sound speaker system comprises an elongated vertical cylinder having an overall length equal to an integral multiple of its inside diameter. The cylinder is open at its upper and lower ends and a loudspeaker is positioned adjacent its lower end. The diameter of the loudspeaker cone is equal to one-half the inside diameter of the cylinder. The system is designed to be placed in the corner of a room so that sound emanating from the lower and upper ends is reflected by the floor and ceiling corners respectively into the room.

Abstract: The present invention relates to a time card computer that is adapted to compute or calculate the total time worked by a worker over a specified time period and in the process compensates or subtracts for interim time out periods. The time card computer of the present invention is of the circular or disc type and includes a stationary total time worked scale, a movable time reference scale disposed radially inward of said total time worked scale and a movable time out or subtracting scale disposed radially inwardly of said time reference scale.In computing the total time worked by a worker over a specified period of time, the time reference and time out scales are indexed relatively to the stationary total time worked scale.

Abstract: A stereophonic speaker headrest for motor vehicles includes a rigid interior shell and a padded cover. The rigid interior shell is generally hollow with a pair of opposed side wing members having speaker attachment structure therein for holding a speaker in each wing. The hollow portion of the rigid interior shell adjacent the speaker attachment structure forms an acoustic chamber. The padded cover provides substantial padding over the front and rear surfaces of the rigid interior shell, including the area in front of the speakers.

Abstract: An acoustical ear muff arrangement having an identical acoustical sealing muff for each ear, the muffs being connected together by an adjustable spring wire structure for holding a muff over each ear. Each muff has a dish-shaped portion with elastomeric foamed material therein, and with a novel non-foamed elastomeric seal around the periphery of the dish-shaped portion. The non-foamed elastomeric seal has three lips extending from a base section. The lips have a tapering configuration and extend at angles within a critical range from the base section.

Abstract: Converter for a fuel pump computer having a register driven by a variator normally connected to be driven by a meter wherein the converter is attachable to the variator for driving it by a variator drive gear in the converter which has a meter driven rotary input and change speed gearing for expanding the price range of the computer. In a first setting, the rotary input is connected to the variator drive gear in 1:1 drive ratio. In a second setting, the rotary input is connected to the variator drive gear via the change speed gearing to provide a selected drive ratio for a different unit volume of fuel delivered. The settings of the converter are changed by an interlock providing an irreversible gear ratio changeover.

Abstract: An electronic voting machine includes a number of terminals to facilitate accommodating virtually any ballot with nearly the minimum amount of apparatus for the particular ballot. A display lists the candidates for each office beside an identifying tag. A poll worker actuates a switch which enables the apparatus to receive vote selection indicated on a keyboard by the voter. The voter operates a switch to identify the office or issue being voted and then enters his choice on a keyboard to cause a signal representative of his selection to enter a temporary storage means and be illuminated on a display means. The voter turns a switch to the office or issue voted upon, enters a number representative of the candidate or issue decision selected and sees his vote displayed as it enters storage.

Abstract: A loudspeaker assembly comprising a loudspeaker including a front mounting flange having front surfaces, and an enclosure for the loudspeaker including a front wall and a rear wall and a top wall and a bottom wall and opposed side walls all having at least two layers of corrugated material, the inner layers of the walls being formed from a single inner member including a front panel having opposed top and bottom panels and opposed side panels hingedly connected thereto and rear panel sections respectively hingedly connected to the opposed panels, two of the rear panel sections cooperating to provide an inner rear panel and the other two of the rear panel sections cooperating to provide an outer rear panel; in one form, the loudspeaker is fixed to the inner member by having slots in opposed panels receiving the mounting flange therethrough with an adhesive between the front loudspeaker surfaces and the front panel; in the other form, the opposed top and bottom panels and the opposed side panels at the juncture

Abstract: A Zimbelstern system or sequential bell ringing system in which a sequential counter actuates a set of self-damping circuits in a predetermined repeating sequence, the self-damping circuits each enabling a different set of sinusoidal tone sources in such relative amplitudes and with such relative rise and decay envelopes as to simulate the sounds of sequentially sounding bells when electro-acoustically reproduced.

Abstract: The present invention comprises a radially pulsating cylindrical surface operating as a wave transmission-line. The device is responsive to electrical means and may be practically utilized to generate pressure waves. A conventional electromagnetic driving system is employed with the novel cylindrical surface. A cylindrical voice coil is affixed to the cylindrical surface co-axially. The surface may comprise a matrix of helically oriented fibers suspended in an elastomeric impregnant. Damping means may be provided both internally and terminally. The radiation produced is omnidirectional.

Abstract: An acoustic speaker enclosure of sufficiently thin design that it may be suspended from a wall and then concealed by a framed picture being hung thereover. Forwardly directed sound from the speaker radiates transversely through 360.degree. through a first passage defined in the enclosure. Rearwardly directed sound from the speaker is transmitted to the resonator frame through a second free transverse passage as well as a baffled third passage. A rearwardly disposed resonance board of the speaker enclosure is in abutting contact with the wall, and rearwardly sound from the enclosure is transmitted through this resonance board to the wall to resonate the latter to radiate sound to the room in which the speaker enclosure is disposed. Due to the multiplicity of sources of sound from the acoustic disclosure, a hearer in a room is not cognisant of the location thereof, particularly when the enclosure is concealed by a framed picture.

Abstract: An improved stethoscope for use in medical diagnosis as a listening device to detect sounds within the thoracic cavity is provided having improved sound reception and transmission characteristics. The improved stethoscope has an improved stethoscope chestpiece which has two sound chambers for receiving sounds as the instrument is placed against a patient. One sound chamber is the same as that described in my earlier U. S. Pat. No. 3,067,833, utilizing a diaphragm across the mouth of the sound chamber, while the second sound chamber utilizes no diaphragm. The structure forming the second sound chamber is rotatable with respect to the structure forming the first sound chamber; rotation of the second structure with respect to the first structure between two stops results in the two chambers being acoustically connected at one position while at the second position the two chambers are acoustically insulated from each other.

Abstract: A cushion member for sound-insulating and air-tight sealing, which cushion is to be attached substantially along the edge of a first surface, which at this edge is connected via the cushion with another surface, which need not have a form absolutely conforming to the first surface at the connecting surface and need not be smooth. The cushion consists of an elongated casing filled with balls of plastic material and with a cylindrical cross-section of soft, flexible and air-impervious material and it is adapted to be attached to the first surface.

Abstract: A speaker system for a small radio device includes a cover plate having slots therein and a rigid grille screen having channels which extend into the slots. The cover plate and grille screen are generally planar and parallel to each other, and the channels in the screen have portions generally perpendicular to the plate and screen which are spaced from the edges of the slots, with openings therein through which sound is transmitted. A felt disc is positioned over the screen, and the speaker is positioned against the felt disc. An annular bracket engages the speaker rim and is secured to the cover plate to hold the speaker system assembled. The bracket is of semi-circular cross-section with the flat side thereof engaging the speaker, and has integral extensions which are secured to the cover plate to clamp the speaker against the felt disc.

Abstract: An acoustic amplifier securable detachably to the ears and supported by a head piece to amplify sound without the use of electricity.

Abstract: A modified mechanical gasoline pump computer with an input gear box mounted on the underside of the base of the computer variator. A depending gear box input shaft is coupled to be driven by the gasoline meter and is axially shiftable for axially shifting gear box output gearing mounted on the variator center shaft upwardly from a gallon unit volume measure gear ratio setting to an alternate quart or liter unit volume measure gear ratio setting.