Abstract: The subject matter of the invention is a method and an apparatus for signaling an existing picture telephone communication for picture telephone apparatuses. The picture telephone apparatus (1) includes a transmitter (2) for transmitting a short identification signal upon lifting off the handset (1a) as a picture telephone identification signal (2a) through the audio channel, a detection circuit (3) for detecting an incoming picture telephone identification signal and an indication unit (D) for an acoustical and/or optical indication.

Abstract: Terminal elements for interconnecting insulated wires. Twin-contact terminal elements are formed of leaf-shaped sides of resilient contact material, each side having a slot for solderless, screwless and stripless clamping contact with an individual wire. The terminal elements are V-shaped, a plurality of which can be mounted in an insulative terminal strip so that each two adjacent terminal elements are disposed with their sides in parallel confronting relationship.

Abstract: The subject matter of the invention is a connector block (1) with solderless, non-screwed and stripping-free terminal elements (2, 3) having a polytropic air gap, for terminating dropwire cables (6) and cable wires (7). The terminal elements (2, 3), which comprise a terminal contact (2b, 3b) and a center contact (2a, 3a), have a semi-circular extension (2a') on the underside (2') of the center contact (2a, 3a), the spacing of said semi-circular extension relative to an earth bar (4) mounted in the housing lower half (12) being variable by tilting the earth bar (4) about 180.degree.; said earth bar (4) is adapted to be mounted at either of two different levels. Thereby it is possible to select a high-voltage spark-gap function.

Abstract: A device comprising a plurality of terminal elements (1) for making a solderless, non-screwed and unstripped connection of one or several wires to each terminal element (1). The terminal elements (1) are constructed either as double-contacts (1a) or as multiple contacts (1b) having transverse webs (3, 4, 5, 6). Each of the webs comprises a contact slot (2) and is oriented at an angle of about 45 degrees to the wire axis and, is disposed in parallel to each other.

Abstract: The measuring apparatus is intended for the automatic measurement of speed, travelled distance and directional changes, wherein two measuring units (3, 3a) are disposed in spaced relationship on the underside (4) of a vehicle (5). Upon a comparison of the left-hand and the right-hand signal a measurement of the directional change is effected, wherein each measuring unit (3, 3a) respectively comprises a forwardly and a backwardly measuring and transmitting measuring section (I and II, respectively); thereby errors of measurement caused by pitching motions of the vehicle may be minimized to less than 0.1%.

Abstract: The present invention relates to a wire connector for the incoming and outgoing wires of a telecommunications cable, in which the connector body (3) comprises a cover portion (1) and a bottom portion (2). For the termination of two wires (4) there is fixedly mounted a solderless, non-screwed, strip-free terminal (5) having a polytropic air gap, a resilient tab (7) having a crimped portion (6) being integrally formed at one end of said terminal (5) and the contact arms (5a) of said terminal (5) being offset relative to the cable axis at an angle of about 45 degrees. The bottom portion (2) of the connector body (3) is provided with either tubular or channel-like guide means (8, 8a) and clamping ribs (9), a cutting blade (10) for separating the cable wires being also inserted. The cover portion (1) is formed with an aperture (11) for insertion of a test prod (12).

Abstract: The invention relates to a tool for the wiring of terminal elements which permits a plurality of separate operations such as connecting and withdrawing of a wire to and from a terminal element, respectively, and severing of the wire, to be carried out, and which may be manufactured at low cost because of its simple structure. To this end the tool comprises a bipartite plastic grip member (3) accommodating a ram (2) and a striker mechanism. On a protruding ram head (2a) there is provided a wire cutter (6) which may be actuated through a pin-and-slot guide (5, 6c) during a connecting operation. Locking means function to releasably connect the ram (2) to a slider (8) accommodated within the grip member (3) so as to be longitudinally movable.

Abstract: A plug for masking switching contacts, for instance in terminal strips of telecommunication devices, comprising an upper pulling head, a widened central supporting portion, and two lower spring tongues with a guiding web disposed therebetween. The plug is integrally formed and has the function of masking or, respectively, separating solderless, screwless and stripless switching contacts (so-called LSA-PLUS contacts) in terminal strips, wherein the contact points of these switching contacts are not touched by any parts of the plug so as to avoid contamination.

Abstract: The subject-matter of the present invention is a plug-in connector with arresters (1) for separating blocks, comprising a cartridge-type housing (20) of insulating material having receptacles for the arresters (1), each of said arresters being connected through a respective fuse element (11) and an earth contact (3) to an earth strip (7) and being exchangeably retained within the receptacle by means of compression springs (10). In order to obtain a number of advantages with respect to manufacture and operation, such as simple construction and inexpensive manufacture as well as easy manipulation and suitability for two respective tapping contacts per arrester, in the plug-in connector according to the invention the arresters (1) each comprise three electrodes (12, 12', 12") each of which is connected to a contact pin (c, b, a) both mechanically and electrically.

Abstract: The invention relates to a surge-protected cable joint for telecommunication networks, comprising a joint casing closed at either end and having axial cable inlets, and terminal strips for the cable wires secured in the casing interior. In order to permit connection of an increased number of cable wires without increasing the external dimensions while at the same time obtaining a higher resistance to surge currents, the individual terminal strips are disposed within the joint interior in a plurality of double rows arranged in series and each row is fixedly mounted within a trough, thus resulting in a wiring free from crossover points and in an increased number of connections. The receiving troughs (2, 2a) are bolted together in pairs with their bottoms adjacent each other, and are secured to lateral connecting rails (4).

Abstract: The subject-matter of the invention is a device for electrically clamping or connecting a cable wire in the longitudinal slot of an upright terminal element, the laterally deflectable legs and lugs of which are not supported at their sides, e.g. by a plastic material. The device comprises a plunger (1) adapted to be longitudinally movable within a housing against the action of a coil spring (4) and carrying at its forward end a pressure member (1a). Said pressure member (1a) is disposed to be movable within a sleeve (3) fixed to the housing and has a shape matching the cross-sectional configuration of the terminal element. The projecting sleeve surrounds the outer faces of the components of the terminal element and supports the same laterally during the clamping operation. Furthermore the sleeve (3) comprises a cutting edge (3a) cooperating with a cutting edge formed on the pressure member (1a).

Abstract: In a universal connector (1) for a solderless, screwless and stripless system in which the opposing leaf spring arms of a contact element are oppositely torqued upon insertion of the conductor between them at a 45.degree. angle. The connector is intended for testing, connecting and isolating conductor tracks. It is possible with this invention to obtain a twofold utilizability and thus an inexpensive manufacture of the shell halves (2, 2a) of the universal connector (1) by the fact that in two identical shell halves (2, 2a) of the universal connector (1) there are provided with either two contact blades (3, 3a) or a printed board (4).

Abstract: The invention relates to a connector assembly for cables adapted to transmit signals with pulse-code modulation. The connector assembly may be used with an increased number of twin conductors either as a simple connector strip or as a pressure sealed cable termination device in conjunction with a housing member. The assembly offers sufficient electrical shielding and is of small size. To this end the connector assembly comprises a base plate (1) mounting a plurality of metal-shielded plastic housings (20). Each of the plastic housings (20) accommodates a pair of contact pins (24,24') secured in the base plate (1) in a pressure sealed and elecrically insulated manner for a twin conductor or, respectively, an individual cable, and further accommodates solderless, screwless and stripless PLUS-contact elements (13, 14, 15) electrically connected to the contact pins.

Abstract: Improved apparatus for switching on and off and adjusting the volume of communications equipment employs a non-latching button, a delay element for producing a time delay determined by the pressure time on the button, a volume adjusting device for adjusting the amplification of an amplifier and a relay control for turning the amplifier off and on. The button is coupled to both the volume adjusting device and the relay control via the delay element in such a fashion that, depending on the delay time, either a switching or a volume adjustment results. An automatic shutoff can also be provided for shutting off the power supply to the amplifier after the loop current is interrupted.

Abstract: A device for automatically protecting telecommunication apparatus against input signals of improper polarity. The device does not use any energy or voltage after polarity match is established, so that use of the device does not degrade the incoming signal. A set of relay contacts, controlled by diodes, assures that the signal applied to the load is of proper polarity. There is no voltage drop between the exchange line incoming cable and the load.

Abstract: In accordance with the invention there is provided a display device for visual display of telephone operation symbols in telecommunication apparatus which includes, for example, a key-dialing block. The device has a display element incorporated in a key-dialing block and an electronic circuit controlling the display element. The device is such as to provide a visual display showing a first symbol when one telephone set in a two set circuit is in use while displaying a second symbol when a number is dialed with the receiver replaced.

Abstract: In this overvoltage arrester device which takes the form of a plug-in-type insulation box (1) comprising a box top (1b) and a box base (1a) and in each case adapted to accomodate a plurality of laterally adjacent overvoltage arresters (4a,4b), the housing or box (1) is assembled from a lower part or base (1a) which is identical for all kinds of application, and one of two types of box tops (1b) depending on the envisaged application, the box tops (1b) being adapted to be plugged or snapped into the box base (1a) and being fitted with knife-switch prongs (2a,2b) and earth bars (3a,3b) of different configuration depending on envisaged application in such a manner as to enable a double row of arresters of different types being accomodated in the box.

Abstract: An automatic dialing pause generator for use in telephone terminals with pulse dialing and additional features such as abbreviated number dialing, redialing, direct dialing and the like automatically provides a pause between selected digits dialed by the telephone terminal. Specifically, the present invention inserts a pause automatically after transmitting a directory number having an exchange code number. Memory write-in logic monitors the dialing input from a keyboard and from a keyboard decoder for the entering of an exchange code number to be stored in an exchange code memory. In addition, the memory write-in logic also recognizes the entering of a dialing command from keyboard and keyboard decoder as normal or abbreviated number dialing and stores it in a directory number memory which controls the dialing through a digit and pause generator.

Abstract: An electrical crimp connector has a plurality of two armed connecting elements made of a flat resilient contact material having a central slot. The main part of each slot extends from a widened entry aperture, is bounded by sharp edges and has a width less than the thickness of the metal core of a wire so that when the wire is pushed into the slot the insulation of wire is severed so the wire contacts the connecting element. A clamping element is associated with each connecting element and has a support surface on which the connecting element is fixed. The connecting elements are interconnected in pairs and have a number of interconnected clamping elements extending around them and are combined to form a unit having wire guides. The connecting elements are adapted to be plugged in on the support strip which is releasably connected to the insulating member on both sides of longitudinally extending lines, separate wire guides being provided on the parts which are releasable from one another.

Abstract: A line telecommunications cable end system which is particularly suitable for installation in a rack, such as a casing, for supporting and fixing a lead-in cable end and for mounting terminal and/or isolating strips. The system comprises at least one pair of spaced, parallel earthing strips which each have a row of tags formed integrally on the top thereof. The tags extend through the end face of a corresponding number of terminal or isolating strips with LSA contacts and are of such a length that they can contact associated equipment such as a surge diverter.