Abstract: An electronic circuit contained within a housing and having two sets of optoelectronic display elements on the face of the housing arranged to represent the spots of a set of dice. The electronic circuit includes a timer which produces timing pulses of varying duration controlled by an externally available switch which determines the beginning of the timing pulse and their duration. During the duration of each timing pulses a switching circuit produces two varying sequences of clock pulses each of which is counted by a binary counter configurated to six counts in a repetitive counting cycle. At the termination of each timing pulse, the final count on each of the counters is displayed on the optoelectronic elements as the numbers on a set of dice. An audible oscillator simulates the sound of rolling dice during the course of each timing pulse.

Abstract: The present invention refers to an electronic control device applicable to anti-skid equipment in automobile vehicles which compares the speed of the wheel with a voltage corresponding to the level of optimum vehicle-wheel slip. On the basis of the result of this comparison, the device operates an actuating system that increases or decreases the pressure on the brakes with the aim of maintaining the slip of the wheel around the skid for which maximum adherence is presented.

Abstract: An imaging system is provided whereby graphic information from a source is magnetically recorded on a receiving surface. The imaging system comprises shaping a magnetic field to substantially linear configuration and varying the intensity of the magnetic field along said line in accordance with information contained in a corresponding line of the source of the original graphic information. Toner material is disposed in magnetically attractable relation to the magnetic field for causing transfer of toner material to a receiving surface in a quantity corresponding to the variations of the magnetic field intensity along the line so that a record thereof is made upon a receiving surface interposed between the magnetic field and the toner supply.

Abstract: A wheeled carrier such as a stroller comprising a frame having a base provided with wheels and a collapsible support movable between an erected position wherein it extends upwardly from the base and a collapsed position wherein it lies generally flat on the base, and a collapsible seat which is supported by a part of the support movable between an erected position to position the seat for use when the support is erected and a collapsed position to collapse the seat when the support is collapsed.The invention provides locking means such as toggle mechanisms connected between parts of the support and operable to lock the support in the erected position by movement of the seat-supporting part downwardly towards its erected position and releasable to permit collapsing of the support by movement of the seat-supporting part upwardly towards its collapsed position.The support comprises frame members pivotally connected together and to the base.

Abstract: An attachment for apparatus that is arranged to cut threads on a tubular workpiece. The attachment includes a vertically oriented chute for delivering a stream of the tubular workpieces, by gravity, to a retractable pin on which the lowermost workpiece is supported. A reciprocating member is provided with spring biased jaws for gripping and removing the lowermost workpiece from the pin at the receiving station. The workpiece is moved into opposition with a plunger which transfers the unthreaded workpiece to the thread cutting apparatus. After the threads are cut, the plunger then retracts, together with the threaded workpiece, which is stripped therefrom by a second pair of spring biased jaws and carried away from the plunger so that the now threaded tubular workpiece may be discharged.

Abstract: A vacuum cleaner filter bag for an upright vacuum cleaner comprising an air pervious filter receptacle and an air impervious feed tube interconnected together so that the interior of the filter receptacle is in air-flowing relationship with the interior of the feed tube, where the feed tube is adapted to be connected to the vacuum cleaner. A collar is intermediately disposed within the filter receptacle and secured therein by a clamping ring disposed externally of the filter receptacle in juxtaposition with an upper portion of the collar. An air impervious dust receptacle is removably disposed within a lower portion of the filter receptacle with a mouth portion of the dust receptacle being disposed about a lower end of the collar. A resiliently expandable ring releasably secures the dust receptacle mouth portion about the collar so that the dust receptacle is maintained in an open mouth suspended condition within the filter receptacle to receive and collect debris introduced into the filter receptacle.

Abstract: A filter cloth for a leaf filter of a pressure vessel including a flat retaining sack or bag which encloses the leaf filter. An outlet opening is contained in the sack through which the filtered product can be extracted. A releasable closure device is provided along the greater part of one side edge of the sack to permit removal of the sack from the leaf filter for cleaning and replacement thereof. A reinforcing material is provided at the outlet opening to provide a tight seal about the outlet of the leaf filter. Preferably, the sack is substantially circular but may have any configuration conforming to the shape of the leaf filter.

Abstract: A ground connector for a jacketed, interlocked armored cable includes a body portion, a resilient grommet, a frictional washer and a compression nut. A longitudinally split metallic grounding ring is also provided. A first end of the grounding ring is seated in a bore formed interiorly of the body portion. The opposite second end of the grounding ring is provided with a plurality of fingers as well as generally U-shaped connecting sections for joining the fingers to the second end of the cylindrical wall of the grounding ring. The connecting sections and the fingers are both deflectable upon assembly of the connector. The fingers, which are initially at an angle with respect to the longitudinal axis of the connector, point in the same direction as the direction of cable assembly. The free ends of the fingers act like barbs to thereby minimize retraction of the cable.

Abstract: A tension indicator for use with fasteners such as a cooperating nut and bolt. The tension indicator comprises a pair of washers for placing on the shank of the bolt between the bolthead or nut and the workpiece that is to be secured by the fastener. Each washer includes a concave central portion having a hole therethrough for receiving the shank of the bolt with the concave surfaces of the washers facing in opposite directions in the assembled condition. Each washer further includes at least one finger extending outwardly from the central portion. Prior to the application of the load on the tension indicator by either the fastener or the workpiece, the outermost end faces of the coacting fingers will be at equal and opposite angles with respect to each other. After a predetermined load has been applied to the fastener, the outermost end faces of the coacting fingers will be aligned with each other to thereby visually indicate that the desired load has been achieved.

Abstract: A filter bag which includes an annular thin-walled band having a plurality of discrete resilient tabs extending from its outer surface along two axially separated paths. A flexible collar is secured to the outer surface of the band and conforms to the shape of the tabs to provide discrete protrusions along the two paths. The band and collar assembly is secured to one end of the filter bag. The end of the filter bag can snugly fit into a socket of a cooperating member, whereby a portion of the socket is positioned in the space between the two separated paths and is retained by the protrusions disposed on either side thereof. The retained portion of the socket includes an enclosed annular ring.

Abstract: A device is described for providing a semi-permanent luminescent display which includes a first sheet of substantially transparent material provided with a luminescent dye in the form of a fluorescent dye dispersed therethrough. The first sheet of fluorescent material is provided with a smooth major surface which is disposed in opposition to a smooth surface of a second dispersive opaque sheet of material. The two sheets of material are coextensive with one another and one of these sheets is pliable to permit the selective application of pressure on portions thereof to cause the smooth surfaces to come into contact with one another and cause the same to adhere to each other in the regions of these selective portions. Such adherence disperses the light in the fluorescent sheet which impinges at said portions and results in a luminescent effect corresponding to the indicia or pattern impressed.

Abstract: A magnetizable layer is initially magnetized and selected portions thereof are demagnetized by an optical imaging system. In one embodiment, an image to be reproduced is projected through a transparent electrically conductive electrode which is brought into contact with a photoconductive matrix through which is dispersed magnetizable particles. Changes in resistivity of the photoconductive matrix causes a current density distribution, which corresponds to the image intensity distribution, to flow transversely from the transparent electrode through the photoconductive matrix to a support electrode on which the matrix is fixed when a potential is applied between the transparent and support electrodes. The current distribution results in corresponding magnetic fields which modify or "erase" selected portions of the initially magnetized layer.

Abstract: An improved mobile truck for supporting a plurality of removable pans or trays includes a base having a plurality of rollable casters secured thereto. A pair of laterally spaced apart, generally U-shaped frame sections are secured to and extend upwardly from the sides of the base portion. Removable racks are mounted on each of the U-shaped side frame sections and include a first plurality of U-shaped rods that extend inwardly from the frame sections as well as in the direction between the legs of the U-shaped frame sections in order to support the pans or trays. A second plurality of U-shaped rods, similar in construction and orientation to the first plurality of U-shaped rods also extend inwardly from the frame sections and in the direction between the legs of the U-shaped frame sections for minimizing lateral movement of the pans or trays.

Abstract: A jewelry clasp is provided with a female member and a complementary male member adapted to cooperate with a releasable locking member disposed within the body of the female member, where the locking member engages the male member to hold the male member within the female member to prevent removal thereof. The locking member includes an integral one-piece construction having a locking portion for engaging the male member, a resilient portion for biassing the locking portion against the male member, and an actuating portion for moving the locking portion relative to the pressure of the resilient portion for releasing the male member to permit retraction of the male member from the female member. A holding member disposed within the female member positions the resilient portion relative to the female member.

Abstract: A wall stud for securing plasterboard to masonry, bricks, blocks and the like, the wall stud comprising a box-like member for receiving fasteners which secure the plasterboard thereto. The box-like member includes inner and outer walls and sidewalls connected together to define the box-like member. The plasterboard is secured against the outer wall in a parallel arrangement therewith. The box-like member is provided with a perpendicularly extending anchor member adapted to be disposed in mortar joints connecting the masonry, bricks, blocks and the like to secure the inner wall there against. The anchor member includes a body portion having an end which is remote from the inner wall. An open area is disposed between the inner wall and the remote end so that mortar can be received therethrough to anchor the remote end when the mortar is hardened. In one embodiment, the anchor member comprises a bent-out tab provided with a punched-out hole therein.

Abstract: A hold circuit for telephones which includes a relay having a coil and normally open contacts. A normally open momentary contact switch is connected in series with the relay coil, the series combination being connected across the telephone lines. The contact switch is connected in parallel to the normally open contacts of the relay. The hold circuit captures or holds the telephone lines when the contact switch is closed and permits the telephone lines to be released upon removing the telephone handset "off the hook." In one embodiment, a parallel connection of a lamp and a capacitor is connected in series between the relay contacts and the relay coil to form a voltage divider when the relay contacts are closed.

Abstract: An active dual channel tuning control particularly useful for television and stereo applications has two independently adjustable channels. For example, each channel for stereo has an input for receiving a decoded signal which represents the left or right channel information. Each channel additionally has a feedback amplifier with an adjustably turned output to permit highly selective tuning and impedance matching to the following amplification stages. Switching networks are provided for reversing the channel outputs as well as for selectively inhibiting either of the channel outputs in either the normal or reversed channel condition.

Abstract: The present invention relates to an endless chain structure incorporating a series of cages with a mechanism for varying the distance between the cages. The cages are arranged in two rows, one above the other, and are very close together in the straight stretches. Each of the cages is attached to a mechanism for varying the distances which determine an increase or a reduction in the separation between the cages before or after, respectively their passage over end pulleys or wheels of the structure, so that a cage begins its ascent towards the upper level or its descent towards the lower level, following a curved line determined by the rim of the pulley, to avoid the cage in question from being reached or touched by the cage immediately following and travelling in a direction that is still rectilinear.

Abstract: A rollable cart that may be readily assembled from a knock-down condition using conventional fasteners and tools and with a minimum of skill is disclosed. The rollable cart includes a chassis having a pair of pivotable, relatively small front wheels and a pair of larger, rear wheels. A three-sided housing defined by a front, a rear and a side panel is mounted on the chassis. The fourth side is open so that articles may be placed into and taken out of the housing. Side edges of the front and rear panels and the side panel are provided with a plurality of vertically spaced apart L-shaped notches. A plurality of shelves each having front and rear pairs of downwardly opened notches is also provided. The shelves may be adjustably positioned in the housing by transverse front and rear bars on which the shelves rest. The ends of the transverse bars are received in the L-shaped notches of the front, rear and side panels, which L-shaped notches are in registry with one another.

Abstract: A deep-hole boring head comprising a body member arranged to support a boring tool at one end and to be attached to a boring bar at the other end, the body member being provided with a number of guidance members in strip form adjustably mounted thereon and arranged during use of the boring head to contact the surface of the hole bored by the boring tool so as to guide the tool during the boring of a deep hole, and adjustment means connected with the guidance members and arranged, on movement of the guidance members in directions substantially parallel to their longitudinal axes, to adjust the radial distances of the guidance members from the center line of the hole to be bored.