Abstract: A method and an arrangement for depicting half-tone images of equal-sized image dots provides an arrangement of the image dots in a grid having three directions of orientation at an angle of 60.degree.. Each image dot is thus equidistant from the six directly adjacent image dots. A constant number of adjacent grid positions is always used to form an image patch. The number of image dots in an image patch determines the grey step in question. The filling of the image patches with image dots according to the grey step to be produced always takes place following the same rule. The image dots associated with a particular grey step are equidistant from corresponding image dots in the six directly adjacent image patches.

Abstract: In the exemplary disclosure, the apparatus includes electronic delay circuitry for delaying echo signals produced in use by a multiplicity of transducers of the apparatus such that the phase relationship between respective echo signals is substantially maintained.

Abstract: An illuminated sign for outdoor use is provided which is a frame enclosed by a transparent cover. Grooved tracks are utilized to receive and retain display plates which have light transmitting portions therein in the shape of letters or numbers. A central light source provides illumination and a translucent sheet diffuses the light so that a uniformly bright message appears when the light source is energized and the selected plates are abutted end to end in the tracks. The sign can have a display on more than one side and the display can be in more than one level.

Abstract: An intermittent motion imprinter particularly adapted for use with quick change cassette carried transfer tape to imprint spaced indicia by means of a reciprocating print head, the indicia being printed on a film strip, strip of labels, or product container passing the print head. Movement of the print head and advancement of the transfer tape is by means of a hydraulic or pneumatic cylinder driving a reciprocating shuttle. The print head has a centrally aligned axially extending shaft with a diametical slot therethrough. The shuttle passes through the slot and engages a cam roller affixed to the shaft within the slot, the cam contacting walls of a camming surface of the shuttle. The print head shaft is radially restrained in a bearing member and the shuttle is restrained against movement transverse to the reciprocal movement direction. The shuttle terminates in a projecting portion which engages a one-way drive for advancing the transfer tape.

Abstract: A masonry veneer wall anchor formed of an integral metal form preformed as an L-shaped bar has one leg overlying a building frame member for attachment thereto and has an outstanding leg with slotted holes formed therein in selected spaced relation through which a tying member may be inserted for vertical adjustment, the tying member engaging the edges of the slot to provide improved resistance to compressive as well as pulling forces, thereby maximizing functional effectiveness.

Abstract: A heat-sealable stringer tape, for slide fasteners, comprising: an elongate fabric woven of warp and weft threads and including a pair of longitudinally extending, spaced first and second marginal portions and an intermediate portion extending between the first and second marginal portions. The warp threads in the intermediate portion include a plurality of thermoplastic filament yarns which are disposed closely to one another at their interlacings with the weft threads. A higher degree of tension has been applied on the weft threads than on the warp threads of the intermediate portion while the fabric is been woven to make the thermoplastic warp yarns project beyond the weft threads.

Abstract: A method for manufacturing solderable, temperable thin film tracks which do not contain precious metal on an electrically non-conductive substrate serving as a carrier employs the steps of applying an adhesive or resistance layer to the substrate, which serves as an intermediate layer, applying a conductive layer over the intermediate layer, and applying a protective anti-corrosion layer over the conductive layer. The protective layer may consist of aluminum or an aluminum alloy, or may be comprised of a combination of a layer of aluminum and a layer of chrome. An aluminum layer may also be applied between the intermediate layer and the conductive layer.

Abstract: In an exemplary embodiment, a cathode cup for electron focusing has a groove-like cavity for the heater coil. The cathode cup is subdivided, approximately perpendicularly to the longitudinal direction of the heater coil into several parts which are insulated from one another, to which separate control potentials can be supplied.

Abstract: Extruded flexible fasteners are secured to thin plastic film by adhesive, attaining high speed production and permitting diverse materials which might not be compatible for fusion bonding to be used in the fasteners and the films, respectively.

Abstract: Coarse-grained crystalline or monocrystalline metal or alloy regions are produced on substrates composed of a material selected from the group consisting of a ceramic, a glass and silicon, and which are provided with a layer of an amorphous or disordered metallic film, for example tantalum, by controllably irradiating select regions of the amorphous film with a focused beam of thermal-energy and/or light-energy, such as obtained from a focused laser beam, while substantially simultaneously maintaining the temperature of such substrate at about the temperature utilized in depositing the amorphous film on the substrate, whereby crystallization seeds are generated at the point of beam irradiation and function as a starting point for the crystalline or monocrystalline front on the metallic surface. Via controlled beam guidance, as by a computer, over the amorphous metal coated substrate surface, the crystallization front is extended uniformly in a desired path along the irradiated surface.

Abstract: In a magnetic tape device in which a motor or a drive capstan is connected with a tachometer which supplies a pulse sequence proportional to the velocity of the motor and in which the most recently written information is immediately subjected to a read-after-write check by the use of a separate read head, a method for weakly retarding the tape movement during the entire read-after-write check and for strongly retarding take movement immediately thereafter is provided. A permanent storage stores rated velocity values of the magnetic tape at fixed points of the stop distance for the entire stop path, and a counter and a shift register provide digital output signals which represent the deviation of the actual velocity of the tape from its rated velocity at the fixed distance points and is connected to the motor through a digital-analog converter for continuous readjustment of the speed thereof.

Abstract: A book cover structure of the type having front and back covers for binding sheets therebetween. A backbone area is joined with the front and back covers. The backbone area is provided with spaced parallel strips of hot melt adhesive with transversely extending bridge means of hot melt adhesive extending therebetween the width of the backbone area. Spaced score lines are positioned between the parallel strips under the bridges in parallel relation relative to the strips to enable the user to flex the binding along selectable score lines relative to the backbone area. The bridge means of hot melt adhesive and the strips comprise means for holding sheets in bound engagement with the backbone area. The bridge means of hot melt adhesive extend across the score lines and thus provide continuity of adhesive on opposite sides of and across the score lines.

Abstract: In a remote control system which is operated by way of a light wave guides, a monitoring device is provided for a remotely controllable load, the monitoring device measuring the current through the load and deriving values therefrom for the proper and the improper operating state of the load. All switches participating in the drive and monitoring functions with respect to the load are incorporated in a check concerning the operability of the monitor and of the load, the check being carried out during operation of the load.

Abstract: An infrared transmitter and control circuit for a load such as a ceiling fan which is capable of starting and regulating the speed of the ceiling fan as well as reversing the direction of the ceiling fan, controlling a light. The apparatus allows the selective control of a single one of a plurality of ceiling fans such that operation of the control does not cause all of the ceiling fans to change speed. The apparatus eliminates the need for running wiring between the ceiling fan and a switch and saves substantial installation costs.

Abstract: A heating device for preheating heating oil flowing through a pipe has a heat conduction body to which a plate-shaped ceramic PTC resistance heating element is connected in heat exchange-relationship. The heating element has a thickness in the range of 0.5 to 2 millimeters, a Curie temperature between 120.degree. and 220.degree. C. and a specific resistance of 430 to 5000 ohm-cm rated at a supply voltage between 110 and 220 volts such that the maximum temperature achieved by the heating element over a range of heat transfer rates is relatively constant and is determined by the resistivity and the Curie temperature of the heating element rather than by the rate of heat transfer. If designed for energization at 220 volts, the heating element has the same thickness and Curie temperature as in the first example described above, but with a specific resistance of 1700 to 20,000 ohm-cm as measured at 220 volts.

Abstract: In the exemplary embodiments, the luminescent layer is applied to a carrier exhibiting a grid which is applied in the manner known per se in applying photo grids. Thereby, however, it is disadvantageous that the grid interstices exhibit only a small depth, so that the grid structure disappears as the luminescent layer is applied with increasing thickness. In order to avoid this disadvantage, the disclosure provides that the carrier also be etched after application of the grid, so that the grid interstices receive the shape of enlarged recesses of greater depth. The luminescent layer applied to this grid then retains the grid-like interruptions even given a greater thickness. An inventive luminescent screen receives improved image transmission properties and is particularly suited for employment as an X-ray (image intensifier) luminescent screen in medical X-ray diagnostics.

Abstract: A pivotable ink shield is provided for cooperation with the writing head of an ink recording device whereby the shield is movable relative to writing head ink dispensing openings to shield, wipe, and permit flushing of the writing head outlets. The shield element is pivotally connected to a pivotally movable carriage bracket. The carriage bracket is connected with a latch mechanism operated by an electromagnet which enables the carriage bracket to be released under the bias of a resilient force removing the shield between an operating position, permitting ink jet printing on a recording medium, and a blocking position, for plugging the outlet openings of the writing head. The shield element is provided with a resilient wiper element and a closure plate portion such that the outlet openings are first wiped by the wiper element and then closed with the plate as the shield is brought into its blocking position.

Abstract: To increase the efficiency of a push-pull saturation converter, a choke is introduced in a common emitter circuit of switching transistors in the converter. In addition, a constriction may be provided in a center leg of a transformer core of a switching transformer within the converter. To further improve efficiency, an RC acceleration element may be provided in a base circuit for the switching transistors.

Abstract: In an exemplary embodiment, a field generator preferably a magnetic field generator which generates a defined irregular field is arranged directly on the body or at an interval thereto, pickups independent of the body are arranged at an interval from the field generator, said pickups having field-flux-dependent sensor elements for sensing a field flux or, respectively, a change of field flux during a measurement, and an electronic circuit obtains and evaluates electric signals arising in a field flux or, respectively, a field flux change. The sensor elements of the pickups or, respectively, the reference points of the pickups decisive for sensing the field flux or the change of field flux are arranged in such manner that they form the corner points of a cuboid. Thereby, the field generator is arranged within a space determined by the cuboid. The device is particularly provided for use in dental medicine, namely for sensing the lower jaw movement of a patient.