Abstract: A printed wiring board for a keyboard switch assembly for electronic apparatus, such as electronic calculators, comprising a self-supporting insulative board having a plurality of elongated connectors on one surface thereof, at least some of the conductors having terminal portions for cooperating with switch elements. A layer of insulating material covers the one surface of the board and the conductors excluding the terminal portions. Each of the terminal portions has a coating of conductive ink thereon and a jumper element also formed of conductive ink is coated on the insulating layer crossing at least one of the conductors embedded therein and joining at least two of the terminal portion coatings. The conductive ink is preferably a noble-metal filled resin compound, such as silver epoxy, screen printed onto the insulating layer and terminal portions.

Abstract: An electric motor having a rotor member and a stator member which define an air gap from about 0.001 inch to about 0.006 inch in width, the ratio of air gap width to rotor diameter being from about 0.0009 to about 0.005.

Abstract: A hand-held illuminated sign has a one piece frame comprising a perimetral wall and perimetral flanges extending inwardly from the wall edges. Translucent sign panels are fastened to the flanges. An elongate lighting member has a bulbous housing at one end that threadedly receives an annular cap. The frame wall has a portion defining an opening for tightly receiving the housing. The cap is threaded on the housing and tightly against the wall portion to hold the frame and lighting member in unified engagement. A strobe light, in combination with the sign illuminating light, is secured to the wall to emit intermittent, high intensity light energy to signal the presence of the sign bearer from distances greater than those at which the sign illumination is perceivable.

Abstract: An inertia mass is supported in a housing for movement along a given path. Two pair of spring blades are cantilever-mounted in the housing. Movement of the mass in one direction closes the first pair of blades and movement in a second direction closes the second pair of blades. Adjustment members are mounted in the housing and bear against one of the blades in each pair to adjust the switching sensitivity. The blades and a warning member, such as an electric light, are mounted in the base of a channel shaped member which snaps into an outer housing shell. A transparent cap is mounted on the housing shell making visible the warning light. Housing flanges are convexly formed and have a plurality of parallel ribs which may be adapted to a large variety of supporting flanges. In one embodiment, the mass is slidable on an elongate rod. Also, the mass may be suspended on two of the spring blades.

Abstract: Mineral separating apparatus comprises a hydraulic classifier provided with an exterior wall, an open bottom sorting column within said exterior wall, and means for introducing a swirl of hydraulic medium in the sorting column. The exterior wall provides a quiescent zone between the bottom of the sorting column and further has a spigot connected to the quiescent zone for discharge of refuse. A launder section is disposed above said exterior wall and sorting column and is in communication therewith. First and second weirs in said launder section are located on opposite sides, respectively, of said exterior wall. The first weir is higher than the second weir to provide a hydraulic flow gradient therebetween.

Abstract: A reflex gun sight is disclosed which provides a collimated image of a reticle, which reticle is lighted by ambient down range light. This image and the view of a target are combined by a frequency selective beam combining device. The frequency selective combination causes the reticle to appear to an observer in a color which contrasts with the target.

Abstract: A shampoo brush having an elongate handle affixed to a housing having on one surface thereof a circumferential track for supporting a plurality of massaging tips in spaced relation and surrounded by cleansing and grooming bristles. Located in the housing centrally of the circumferential track is a container for a cleansing agent. A pair of spring urged plungers are mounted in corresponding cylinders in the chamber, each cylinder having two one-way valves so that on movement of the plungers against the spring force, one valve will open forcing cleansing agent from discharge orifices toward the surface to be cleansed, and on plunger movement in the opposite direction, the other valve in each cylinder will open filling the cylinder with the cleansing agent to be discharged on the next plunger movement. An annular enclosed passage is formed in the housing adjacent and within the circumferential track, said passage having a plurality of apertures for dispersing dilutant and rinsing fluid from the apertures.

Abstract: A frequency band pass circuit having an amplifier that has an amplifying state and may be selectively deenergized to a non-amplifying state. A reverse bias is placed on the amplifier when in the deenergized state to provide substantially the same band pass characteristics of the circuit in the non-amplifying state as in the amplifying state and to reduce the insertion loss impedance through the amplifier in the non-amplifying state.

Abstract: Apparatus for providing auditory and tactile recognition of a light signal associated with a line-selector pushbutton of a multi-line telephone instrument. A photocell is provided for sensing the light signal. An oscillator generates a sine wave voltage which is amplified and applied to excite a piezoelectric crystal into vibration in response to activation of the photocell. An auxiliary pushbutton is disposed in alignment with the line selector pushbutton so that manual depression of the auxiliary pushbutton actuates the line selector pushbutton. Vibration of the crystal in response to the light signal acts upon the auxiliary pushbutton to impart the vibration thereto so that the presence of a light signal is sensed by vibration of the auxiliary pushbutton.

Abstract: A camper-boat construction having a camper body adapted for carriage on a pick-up truck bed, the underside of the body being commensurate dimensionally with the bed. The body has hinged at the edges of its underside elongated panels that have a fold-up or retracted position wherein they may be pivoted flush against the body sides for carriage in the truck and a fold-down or extended position wherein they may be pivoted to and supported at a horizontal position to form a deck area contiguous to the sides and ends of the body. Wheeled struts are adjustably supported to the sides of the body and are lowered during removal of the body from the bed. Pontoons carried on the camper body top are attachable to the underside of the panels in the fold-down position for buoyantly supporting the body.

Abstract: A voltage variable filter circuit useful, for example, in a radio frequency transmitting device and having a center frequency which is changeable with changes in an applied voltage employs one or more voltage variable reactive elements in the filter in conjunction with circuitry for changing the direct current voltage across such reactive elements to change the reactance thereof and therefore also change the center frequency of the filter. To extend the range of filter variation, additional reactance may be selectively introduced into the filter circuit. In the environment of a multi-channel radio frequency transmitting device, a selector switch simultaneously selects one radio frequency channel for transmission and a unique voltage source for application to the voltage variable reactance so that the filter is appropriately tuned for the selected channel.

Abstract: A machine for attaching terminals to electrical conductors is disclosed wherein the bed and ram of an applicator are relatively movable together and apart and each carries a cooperating one of a pair of crimping dies to crimp a terminal onto a conductor when the ram and bed are moved together. A terminal feeding device supplies terminals to be crimped by the dies seriatim and in synchronism with relative movement between the ram and bed and a unidirectional coupling such as a chain connects the terminal feeding device to the ram so that the feeding device is actuated to supply a terminal when the ram retracts from the bed. A spring biasing device opposes operation of the unidirectional coupling to restore the feeding device for subsequent actuation. The cooperating dies and terminal feeding device are independently removably attached to the machine allowing independent replacement to accommodate specific conductor-terminal combinations.

Abstract: Method and apparatus for removing filler from a jacketed multiconductor filler cable for termination of the conductors in that cable is disclosed, wherein the outer insulating jacket is removed from a portion of the cable near one end, and an air flow is induced in the vicinity of the jacketless portion to separate the filler from the conductors and thereafter the separated filler is severed from portions of individual conductors near the one end of the cable for termination as desired. The air flow may be provided by a nozzle and die or guide having coaxial apertures therein and relatively movable between a spaced apart position and a position in close proximity for severing the filler material.

Abstract: Method and apparatus for providing an orthodontic band shaped to an individual tooth is disclosed wherein a tooth replica is encircled by the band and optionally an annular conducting member surrounds the band. The band is shaped to the tooth by rapidly changing a magnetic field within the band and annular member to induce a current flow which cooperates with the magnetic field to force the band radially inwardly into close conformity with the replica. The replica and annular member are then separated from the band and the band is applied to the original tooth.

Abstract: An idealized set of occluded models, both maxillae and mandible, containing castings of the patient's teeth is made with slotted brackets affixed thereto. The slots are oriented conjointly to define a single plane and a predetermined arch curvature which corresponds to the idealized dental arch. These brackets are placed on the patient's teeth in the same position as on the model, have affixed thereto during treatment one or more arch wires of prefabricated shape such that upon completion of the treatment the bracket slots will define a single plane and the aforesaid predetermined arch curvature which corresponds to the shape of the idealized dental arch. Once this slot pattern is achieved, the clinician knows that the treatment is completed.

Abstract: A tent structure having a plurality of elongate tent staves pivotably joined to a common pin at one of their respective ends and supportable at their distal ends on a tent supporting surface. A tent cover is fitted over the staves and defines a tent enclosure when the staves are pivoted outwardly against the cover. A tensile strand depends from the pin and is attached to the supporting surface. A tensioning device adjusts the tensile stress in the strand.

Abstract: Method and apparatus for repetitively separating multiple molded parts from their common sprues and accumulating like parts from the same mold cavity in a storing and shipping tube is disclosed wherein a plurality of tubes are disposed parallel to one another and in substantially the same relative position as corresponding parts occupy on a sprue whereby a set of sprue supported parts may be severed from the sprue and forced into their respective tubes. The tubes are sheathlike having a cross section of generally the same configuration as the part they are to contain and have first opposed side wall portions for gripping parts and second opposed side wall portions separated from the parts and deformable toward one another to urge the first side wall portions away from one another thereby releasing the gripped parts.

Abstract: A hitch for coupling a towing and a towed vehicle is disclosed having a swing-out and pivot feature which allows the vehicle to be approximately positioned for coupling whereupon a gravity operated latch may be raised, a slide portion of the hitch extended from the frame portion thereof and pivoted in a horizontal plane to perfect the alignment of the vehicle coupling mechanism. When the towing vehicle is subsequently moved toward the towed vehicle, the latch drops back into a position where it engages both the slide and frame portions to transmit the towing forces therebetween. The slide itself may comprise first and second members relatively movable between rigid stop positions and including means for cushioning end thrust shocks having a resilient member which mechanically engages the two slide members urging them toward a relative position intermediate the rigid stop positions.

Abstract: An adjustable loom comprising a first adjustable rectangular frame having two spaced, parallel, elongated, rigid uprights of substantially equal length. The uprights are longitudinally hollow. Two rigid, elongated, parallel extending leg members of substantially equal length are rigidly secured at the ends thereof to the lower ends, respectively, of the uprights. The leg members extend orthogonally from the uprights in the same direction. The leg members are also hollow. A first horizontal bar is rigidly secured at the opposite ends thereof to one side of the lower portions, respectively, of said uprights thereby providing a rigid framework of said uprights, leg members and bar. A second rectangular upright frame having two rigid frame elements telescoped into said uprights, respectively, has an elongated, horizontal bar rigidly secured at the opposite ends thereof to the upper ends of the frame elements.

Abstract: A honing tool slot protecting bushing is disclosed for gripping an abrasive element while mechanically isolating the abrasive element from the remainder of the honing tool. The slot liner is in the form of a bushing having four interconnected wall portions extending generally parallel to one another and including either a lip arrangement or a threaded fastener arrangement for holding the bushing fixedly within the body of the honing tool. The abrasive element is supported by the bushing and retained therein due to the frictional forces between the abrasive element and the bushing.