Abstract: The rim of the upper sheave in a wire induction heating apparatus contains a peripheral groove. The wire passes over a portion of the groove twice, and overlaps for a certain portion. The width of the groove at a height one half the wire width from the bottom supporting surface of the groove is from one and one half to less than two times the width of the wire.

Abstract: There is provided a one-way data transmission system wherein a transmitter station transmits in the form of data packs data from a plurality of channels, the said packs being time multiplexed.One channel amongst the plurality of channels is allotted to transmitting date information. In the receiver equipments, the dead memory stores not only the channel code, but also a subscription period information which permits to validate the channel code depending on the date information received from the date channel. Automatic dead-memory distributors are provided which receive data from a control channel transmitted by the system, like other channels. The system is compatible with television systems.

Abstract: A binary coded signal represented by sequential transmission of two frequencies, comprising means to determine if the frequency of the received signal is below or above a reference frequency generated within the receiver, means for recognizing a change in input frequency relative to the reference as start and end of bit intervals, means to establish if individual bits are of a "one" or "zero" level, means for converting the serial bits to a parallel digital word and means for storing this word indefinitely in the event the received data is a valid signal.

Abstract: A television video signal is used to record a television picture onto a photographic film.The television video signal is sampled, then digitized. Luminance data and chrominance data, if any, for each sample are stored in a memory. Then, such data is read out and selectively applied to an electro-optic device, such as one, for instance, made of electro-luminescent diodes. The diodes generate either monochrome or trichrome luminous points which are recorded on film by means of a photographic camera. Means are provided for eliminating frame interlacing and for using substantially a standard camera.The system may be used with any television standard.

Abstract: A plastic coil bobbin has a recess with the precise dimensions of a thermal fuse. On one side, the recess is open so that, as the coil is wound on the bobbin, successive layers of coil wire form a wall-like surface closing that open side. As the fuse is press fit into the recess, it is also forced into intimate contact against the wall of wire. Thus, the only material between the fuse and wire is a thin plastic shell forming the fuse housing. Since the fuse rating takes this wall thickness into account, there is effectively no thermal insulation between the coils and the fuse. Accordingly, under overheating conditions, the fuse opens a circuit when there is overheating and before a fire can start.

Abstract: A method of manufacturing chenille crests comprising, preparing a large block of chenille material many times the size of an individual crest by Moss stitching background material with white thread, applying by heat transfer a heat transferable and washable coloring ink in the form of crest designs, to the surface of the chenille material, cutting the chenille material along the outline of the crest designs, stitching the cut chenille material along the edges to a felt type backing material, and cutting the backing material outside of the stitching to form complete individual crests.

Abstract: A key retainer having a structure such as to substantially reduce the risk of loss by bouncing out of a pocket. A block of compressible foam such as polyurethane foam has a key chain attached. By compressing the block of foam with the hand and inserting it into the pocket, the foam resiliently expands, substantially filling the pocket or otherwise exerting pressure against the material of the pocket. These forces as well as the accompanying friction forces hold the key retainer securely and safely in the pocket, even in the presence of bouncing or inverting the pocket.

Abstract: A plant watering system comprises a porous inner pot at an elevated location within a water-impervious outer container. Water within the outer container wicks by capillary action up the side walls of the porous pot and wets any soil or like medium contained within the inner pot. The lower part of the inner pot is coated with a water-impervious layer to control the elevation at which the wicking water may enter the soil. Also, a special pot liner enables gases to be bi-directionally vented throughout a selected region in the bottom of the inner pot. When desired, water may be drained out the bottom of the inner pot. The inventive process adjusts the percentage of moisture maintained by soil, or the like, by rating the moisture needs of plant species, the season of the year, and the type of growing medium used. Such a process enalbes a plant grower to select a preferred level of water in the outer container, and therefore the distance over which the water must travel by capillary action through the porous wall.

Abstract: An intercommunication and alarm telephone system has a common control in the form of a clock driven central unit connected to an alarm control unit and one telephone line shared by a plurality of station units. The central control unit provides means for answering and placing outside telephone calls to a central telephone office, holding and transferring such calls, giving paging and intercom services, excluding and locking out other stations from outside calls, giving suitable alarms, and such other services as may be necessary or desirable.

Abstract: A film matrix is reproduced and altered by mounting a replacing image on a light transparent sheet over the image to be replaced on the film matrix. The image to be replaced is obliterated. The mounted replacing image and the film matrix are then double exposed on another piece of film to produce another film matrix with the replacing image appropriately inserted.

Abstract: The inventive cable tie gun uses simple slides and lever arms and does not require common linkages, toggles, or other complex mechanical actions that are subject to malfunction. Near the end of the tensioning slide travel, there is a mechanical interference between two moving parts (i.e. between a cable tensioning slide and a cable severing lever arm having a blade attached thereto.) However, if the cable tie tension exceeds the pulling capability of the tensioning slide, one of the moving parts is immobilized and the interference does not occur. Thereafter, the cable severing lever arm may take a full stroke and cut off the strap end while the tensioning slide is being held at midstroke position by the tension in the cable tie strap. The performance of the cable tie gun is greatly improved by a correct choice of cam surfaces, whereby the parts help and do not oppose each other.

Abstract: A pliers-like device is primarily designed to cut and remove clamps from flexible hoses, such as radiator hoses, for example. A tooth is formed at the end of each jaw of the pliers to reach under the hose clamp and start the cutting process. The opposed pliers jaws have interleaving blades, at least one of which has a knife edge. A pair of opposed cavities are formed on opposite jaws to hold the tab ends of a wire spring hose clamp while it is being expanded. The gripping jaws of a conventional pair of pliers are also provided.

Abstract: A crank bearing device for pedal vehicles comprises a cylindrical crank bearing shell, which is connected to the vehicle frame. A crank passes through this shell with a ball bearing bushing at each end of the crank arm. Between each of such a bushing and a cone, threaded onto the crank, are placed a number of ball bearings. The invention provides that these bushings have a cylindrical outer surface cooperating with a cylindrical inner surface of the shell and are provided with a number of low, protruding ribs. Through driving the bushing into the shell the ribs are forced into the material of the shell, thereby interconnecting the bushing and the shell with each other.

Abstract: A locking device for adjustably locking two mutually movable parts with respect to each other, particularly for preventing an automobile seat from sliding longitudinally along the floor of an automobile. A stationary member is secured to the floor and is provided with teeth for cooperating with a toothed member which is secured to the automobile seat. The two sets of teeth are normally urged into engagement with each other by means of a spring member. For adjustment, the second part can be displaced at right angles to the floor in such manner that the two sets of teeth are disengaged, thereby permitting the seat to slide longitudinally with respect to the floor.

Abstract: A solution for chemically polishing surfaces of copper and its alloys contains acid oxalates at a pH value of 3.0 - 5.0 in combination with hydrogen peroxide and one or more stabilizers and brighteners.

Abstract: A traffic usage recorder is used with a telephone switching network to verify the grade of service being given by observing simultaneous traffic on groups of equipments. The recorder has a plurality of input terminals, each of which may be connected with a corresponding input device, such as a sleeve lead which may be marked with a distinctive busy potential. The busy potential indicates circuit usage. The individual sleeve leads are repeatedly scanned in sequence to detect a presence or absence of the busy potential and therefore the circuit usage prevailing at the time of scan. The data derived therefrom is processed to indicate CCS units, peg count, maximum switch usage, and a cumulative time during which the maximum usage occurs. (The term C.C.S. means one hundred seconds of call time). Periodically (such as once every hour), the processed data may be read out in any suitable manner. The traffic usage recorder verifies the statistical tables which are used to make traffic studies.

Abstract: A frangible top can has a top containing a laminated, two layer insert which comprises an upper plate containing a scored area and a lower plate having an opening. A depression, formed in the upper plate, fits snugly into the opening, which is formed in the lower plate. Thus, the depression may act as a stopper for the opening, when the can is resealed.

Abstract: The inventive process produces a Li(NbTa)O.sub.3 single-domain, single-crystalline film on a lithium tantalate single-crystal. The film is grown on the lithium tantalate, single-crystal by hydrothermal synthesis wherein the alkaline solution is heated to a temperature which is lower than the Curie point temperature of lithium tantalate. The mother material is a mixture of tantalum and lithium salts.The resulting film may guide several modes of light, and possibly modulate them.

Abstract: The invention provides a support for a cushion -- primarily an arm cushion -- on furniture. A frame with a curved ladder back form has a long straight part which fits under the cushions of a seat. The curved portion of the ladder back form extends from the long part outwardly and around the seat cushion. Thereafter, a short straight part of the ladder back form rises from the curved part to receive and support an arm cushion. A plurality of different cushions may be substituted for each other to change the overall appearance of the device including the seat cushion.