Abstract: The disclosure relates to a construction panel system for the erection of doll and play houses, mazes, etc., and comprises a series of connected rectangular panels of approximately the same size connected together so that each panel can be rotated with respect to an adjacent panel but at least two of said panels are connected to adjacent panels by double hinges of the Jacobs ladder type so that they can be rotated in two directions with respect to adjacent panels and at least one additional panel is connected to the Jacobs ladder type so that it can be rotated in two directions with respect to said adjacent panel and at least one additional panel as connected to the Jacobs ladder panels by a hinge having its axis at right angles to the Jacobs ladder hinge. The panels are provided with holes adjacent the corners thereof and a fastening and reinforcing means is provided for holding non-connected panels together.

Abstract: A method and apparatus for manufacturing wire link bands, for example for use in paper making machines, are disclosed. Several wire links or helices are arranged parallel to each other, adjacent helices having opposite pitch. The helices are simultaneously fed through a closure slot while under tension. The closure slot is so shaped as to cause each turn of each helix to be engaged between two adjacent turns of an adjacent helix, thereby to form a wire link band. The closure slot may be held stationery while the wire links are pulled therethrough, or the wire links may be held stationary under tension while the closure slot is moved along their length. A plurality of closure slots may be used to form several wire link bands in parallel, and at least one additional closure slot may then be used to combine the wire link bands into a larger wire link band or sieve. Connecting rods may also be inserted into the wire link bands and may be heat fixed before insertion.

Abstract: A data exchange system includes a plurality of data processing partners which communicate with each other via a common bus. Access to communication is sequentially transferred from one partner to another by the generation of an access-passing-on message which is transmitted via the common data bus. The access-passing-on message includes a source address identifying the address of the baton passing or token passing partner and a destination address identifying the address of that partner which is next to receive access to communication. If, after receiving access to communication, a partner has data available for transmission, it transmits a data information message including an address block identifying the type of information being transmitted and at least one data information block containing the data being transmitted.

Abstract: Rocks are known to contain minute cracks and fissures and such rocks can be crushed under less force than the ordinary crushing force when a vibrational force is applied to exert tension at the cracks and fissures. Rock crushers of the type which include hydraulic means connected to a crushing member are improved by adding means for superposing a vibratory force into hydraulic circuits of such crushers.

Abstract: A heat transformation device which is compact and effective for recovering waste heat from one or more sources which sources may have different temperatures, comprises a closed cylinder containing a working piston made of heat conducting material and at least one impact piston which is constructed to act as a recuperator. Electromagnetic means are provided to suddenly move the impact piston when it absorbs heat from an end of the cylinder into contact with the working piston. The cylinder is filled with a low molecular weight, low density gas which has high specific heat and is preferably compressed.

Abstract: A method and apparatus for cooling a fluid coolant is disclosed. Cooling water, not under pressure, is circulated in a container. The coolant is passed under pressure through cooling pipes immersed in the cooling water.

Abstract: Chorus effect for an original audio signal is developed by forming a complementary pair of signals from the original. The original signal is stored at a write rate (f.sub.c), then, after a delay, strobed to a pair of FIFO registers, one strobe at a higher rate (f.sub.c +.DELTA.f), the other strobe at a lower rate (f.sub.c -.DELTA.f), respectively. The faster readout will decrease the delay (to zero, causing foldover glitch), the slower readout will increase the delay (to excess delay, causing discrete echo). The strobe frequencies are reversed between FIFO registers whenever the delay becomes too great or too small.

Abstract: A compact and inexpensive LF power amplifier is disclosed. A plurality of pulse trains which are phase shifted relative to each other are width-modulated by an input LF signal. The modulated pulse trains are individually amplified, preferably by means of a plurality of respective power transformers and switch elements. The switch elements include any suitable combination of electron tubes and semiconductor switches. The keying ratio of the amplifier is improved by associating the pulse trains in pairs, the two members of each pair being phase shifted 180.degree. relative to each other. The amplified pulse trains are superimposed to form a single combined amplified pulse train.

Abstract: Thyristors included in circuit configurations are, in turn, connected in series circuit fashion such that n circuit configurations are so interconnected, where n is a real integer equal to or greater than 2. The circuit configurations provide a combination of functions such as current limiting, voltage distribution, assumption of storage load, limitation of commutation voltage and limitation of search voltage. The combined circuit configurations provide the most practical arrangement of desired characteristics to meet the requirements for specific applications.

Abstract: This invention relates to a tabletop-microwave oven combination wherein the microwave oven is provided with a cabinet having an opening at the top in which a horizontally sliding door is mounted. The tabletop also includes an opening in the control portion thereof adapted to receive the microwave oven and a pedestal or body surrounding the oven which is inserted in the opening. The door of the oven when moved horizontally to open the oven, slides in a slot within the tabletop or moves in a space just below the tabletop. The oven contains a tray designed to hold a utensil containing food and means are provided within the oven to lift the tray to a position astride of the oven when the door is open.

Abstract: The specification discloses a method for connecting first and second transmitters, each containing its own oscillator, in parallel and to first and second aerial halves, respectively. A phase difference signal representative of the phase difference between the two signals generated by the transmitters and applied to respective aerial halves is generated. The phase of the signal generated by one of the transmitters is adjusted by means of a reactance circuit in the oscillator of the transmitter as a function of the phase difference signal. The oscillator of the remaining transmitters is permitted to oscillate independent of the phase difference signal.

Abstract: The articulator is the type which has an upper part with a horizontal branch and a lower part with a horizontal branch below and substantially parallel to the upper branch. The upper part has a pair of spaced wings connected to the rear of the upper branch and angling upwardly at a small angle therefrom as well as an adjustable incisor pin extending downwardly from the front end thereof. The lower branch has a pair of spaced articulator pins extending upwardly into slots in the wings of the upper part as well as an incisal tray angling downwardly from the front end to receive the incisal pin. Thus the upper part is supported in the lower part as a tripod with a relatively low center of gravity. A mold is provided to be connected to the articulator.

Abstract: A resonator for a high frequency electromagnetic oscillator is disclosed. The resonator includes a hollow cylinder formed of a material having a low dielectric constant and a dielectric wire formed of a material having a higher dielectric constant and located within the cylinder. The dielectric wire has a length similar to that of an open half-wire coaxial resonator or a whole number of multiples thereof. The dimensions of the wire are chosen as a function of the dielectric constants of the hollow cylinder in the dielectric wire as well as the desired resonant frequency such that a standing TEM-wave is established in the hollow cylinder and a E.sub.0m -wave (circular magnetic field, m=1,2,3 . . . ) is established in said wire.

Abstract: In cross-country vehicles where it is desirable to change the pressure in the pneumatic tires of the vehicle to fit the terrain, means are provided for changing the pressure on the tires without leaving the seat of the vehicle. The means provided in this disclosure comprise a source of compressed air, air control valves for each wheel of the vehicle, control keys including a magnetic valve, etc., for venting air from or forcing air to the tires, all somewhat similar to the arrangement disclosed in (Ger) DE-OS No. 2,141,553 but the sensitive throttle added to the latter disclosure is omitted and instead, a relief valve is provided for the air control valve of the wheels whereby the venting time is shortened and less of the apparatus as a whole is maintained under high pressure.

Abstract: A composite material is formed with a porous core obtained by randomly folding or crumpling metal foils or filaments and has a coating adapted to strengthen the final product, of an adhering synthetic resinous material. Preferably, the core material is made more dense at the surface than at the interior as by hammering, pressing, striking, rolling, etc. To permit greater penetration of the resinous coating into the core, the core may be slit, punched or bored. The surface of the coating material may be further treated by fillers, painting, coating, vapor deposition, etc.

Abstract: A bathing cap of the type having an inflatable edge portion so that the edges may be more closely sealed to the head of the wearer when the edge portion is inflated and a tubular chin strap through which the edge portion can be inflated by blowing through the tube, is provided with an improved fastening means which is flexible, non-metallic, does not interfere with the inflating process, and comprises a first part in the form of a projection with a neck and a bulbous head attached to the bathing cap and a second part in the form of a sleeve slidable on the tubular chin strap but containing a pair of openings through which the first part can be forced.

Abstract: A solar heat storage system is provided for greenhouses by providing the greenhouse with a gravel storage bed at the floor level, through which heated air from an air duct at the upper ridge of the greenhouse is circulated to take advantage of and store heat energy collected from the sun in the winter time. In the summer time the same system operates to maintain an even and relatively cool atmosphere within the greenhouse by disconnecting the air duct at the top, introducing fresh air from the outside and passing such air through humidifying means, thence through the gravel storage bed and out vents at the upper ridge of the greenhouse.

Abstract: The efficiency of the transmitter modulator stage of the type in which an anode current I.sub.a of the modulator tube varies as a function of the grid voltage U.sub.g in accordance with the expression I.sub.a =k.multidot.U.sub.g.sup.m, m.apprxeq.=1.5, in which k is a material constant is improved by introducing a deaccentuator into the transmitter circuit. The deaccentuator functions to cause the anode current I.sub.a to vary in accordance with the equation I.sub.a =k[h(U.sub.E).sup.n ].sup.m, where h and n are constants and U.sub.E is the signal applied to the input of the deaccentuator and n=1/m so that I.sub.a =k.multidot.h.sup.m .multidot.U.sub.E is a linear function.

Abstract: A method is described for the automatic addressing of several mobile substations arranged in series from a central station. A two-wire line transmits information in two frequency channels, this line remaining open for direct current. Means are provided for determining the location of the central station with respect to the substation. The method can be used in connection with train sets.

Abstract: Thyristors included in circuit configurations are, in turn, connected in series circuit fashion such that n circuit configurations are so interconnected, where n is a real integer equal to or greater than 2. The circuit configurations provide a combination of functions such as current limiting, voltage distribution, assumption of storage load, limitation of commutation voltage and limitation of search voltage. The combined circuit configurations provide the most practical arrangement of desired characteristics to meet the requirements for specific applications.