Abstract: A generally U-shaped adapter bracket is disclosed for use in converting a conventional surface mounted telephone connecting block into a connecting block having a cover which includes a jack for receiving a plug-ended line cord. The adapter bracket includes a plurality of apertures in its rear surface to provide capability of using it with various conventional connecting blocks. Communicating passageways from the edge of the bracket to the apertures are provided to allow installation of the bracket over a connecting block without removing the connecting block from its wall-mounted position.

Abstract: Apparatus for remotely controlling the motor tape drive mechanism of an audio tape recorder or the like. In one embodiment, the apparatus comprises a plurality of semiconductors controlled by a low-level logic circuit and a diode switching network for selectively varying the current through the forward drive motor and the rewind motor of the mechanism to properly tension the tape between a take-up reel and a rewind reel and to differentially brake the motors when switching from a particular mode of operation to "stop" or in case of power failure, thereby preventing tape spillage.

Abstract: A circuit for use with key telephone systems for detecting the presence of either of two different distinctive ringing signals received over a telephone line. After detection a separate distinct visual signal is provided to indicate which of the two signals was received.

Abstract: A circuit for generating precise tone signals for use in telecommunications systems, such as dial tone, busy tone, ringback tone, etc. the circuit provides tone signals at a level suitable for application for distribution throughout a telephone central office. A facility for providing interrupt of the signals at either a 60 or 120 IPM rate is included.

Abstract: The present invention provides means for deriving a single frequency signal from logic signals A(t) and B(t) by first applying the logic signals to a combining arrangement, which includes logic circuits and can be built using only standard integrated circuit components, e.g., flip-flops, gates, and amplifiers. The output of the combining means is the sum and difference frequencies, in digital form, of the logic signals A(t) and B(t). The single frequency is selected from the frequencies present at the output of the combining means.

Abstract: A pulse repetition rate check circuit of the type which detects when the second of two consecutive pulses from a pulse generator is early or late with respect to a predetermined repetition time period includes an early pulse detector, first and second early pulse detector enabling means and first and second clocks. Each early pulse detector enabling means enables the early pulse detector responsive to its associated clock for a predetermined time so that a second pulse occurring within the predetermined time is detected as an early second pulse. The early pulse detector enabling means includes an inhibit means for preventing the enabling of the early pulse detector after it has been once enabled.

Abstract: A sorting apparatus capable of dividing lightweight axial components according to length. A pair of discs are separated by a predetermined distance and tilted above the horizontal plane with the second lower disc containing a backstop positioned on its outside surface. The item to be sorted is positioned across the discs with its first end against the backstop. If the overall length allows it to span the separation distance thereby supported by the discs it will travel through the arc of the discs as they rotate. If the length of the items is less than the separation distance of the discs, the second end of the item will fall between the discs and the item will fall onto the deflector.

Abstract: A method and apparatus for isolating malfunctions occurring in a communication switching system having a line switching network for establishing communications selectively between calling and called lines under the control of common equipment including a plurality of registers for storing temporarily call processing information received from the calling lines via a plurality of register junctors, a junctor switching network connecting selectively a pool of sending units and receiving units to the junctors, the common equipment including memory, includes establishing a connection between a register junctor and a sender-receiver unit for test purposes, connecting testing circuits to the register junctor via the line switching network, testing the register junctor circuits to determine whether or not they can extend a path from the line switching network to the junctor switching network, testing the sender-receiver unit by means of the testing circuits via the path between the junctor and the sender-receiver uni

Abstract: This invention relates to an electrical terminal system capable of use with fully automated assembly equipment. The terminal system includes a circuit terminal projecting above a base on which a circuit connection may be made. A second terminal projects from an adjacent side of the base forming individual component terminals, providing a mounting point for individual discrete components. The base contains two opposing parallel rows of the terminals and components are mounted between two of such bases. A bus strap may be mounted on top of the base and is held in place by a set of grooves. Terminals extend from the bus strap and may be connected to the individual component terminals. Further an insulating bus may be used where multiple buses are employed.

Abstract: A machine for assembling the plural contact pairs of a multi-element reed capsule switch inside of a glass envelope and maintaining the overall assembly in alignment while the glass envelope is heated and sealed around the terminal ends of the contact pairs. Plural pairs of the reed switch contact members and the glass envelope are manually assembled into intermediate loading fixtures. The machine then automatically transfers the contact members and glass envelope to chucks for maintaining them in correct alignment; the chucks position the contact members inside of the glass envelope; the machine pressure chamber closes and is rapidly evacuated of atmosphere, flushed, and pressurized with an inert gas and the glass sealed about the contacts all while maintaining the correct alignment.

Abstract: A data retrieval and loading arrangement for a communication switching system, such as a telephone system, having common equipment with storage areas containing program information blocks for facilitating the establishment of connections through the system switching network and for generating ticketing information in response to a ticketing connection scanning unit, includes information storage equipment, which in the disclosed embodiment is magnetic tape recording equipment, for storing the ticketing information and the program information blocks via a peripheral adapter unit in response to the common equipment, and a status register responsive to directive information from the common equipment for controlling the adapter unit to transfer to the storage equipment either the ticketing information or the program information blocks. New program information blocks from other ones of the program memory units may be transferred to the storage areas of the common equipment for storage therein.

Abstract: A subscribers telephone circuit that includes automatic muting of signals reproduced by a transducer contained within the subset, each time the telephone's handset is removed from its cradle. The circuit employs electronic techniques to eliminate the need for additional contacts on the hook switch to provide the necessary muting.

Abstract: An electrical circuit for limiting surge currents through incandescent indicator or display lamps is disclosed. It is essentially a constant current device having a current controlling transistor in the load circuit to limit the initial surge current to a first value after, which the lamp itself limits the current. Provision is made for testing of the lamp and circuit by maintenance personnel.

Abstract: A circuit for the monitoring and control of a DC to DC regulated power supply furnishing regulated voltage to a load. The output of the power converter is ultimately used to control a pair of shunting transistors which control the switching transistors in the power converter.

Abstract: An automatic toll ticketing system for use in a communication switching system includes an addressable scanner having common control apparatus controlled by the common control apparatus to effect the interrogation of a preselected group of scan points, associated with busy paths established through a switching network of the switching system, in accordance with address data supplied by the common control apparatus which identifies the busy paths.

Abstract: A time division multiplex system includes a status channel as well as a plurality of information channels and a frame synchronization channel in each frame. A submultiplexer combines a "winking" framing pulse with four different status signals to derive a four-state code. One state of the code contains a "winking" submultiplexer framing signal, and the other states transmit status information to control system alarm and restoral conditions.

Abstract: Box capacitors are loaded onto an in-line track feeder with the capacitor leads extending downward between a pair of tracks. Vibration of the tracks moves the capacitors thereon so that the capacitor leads pass between the meshing teeth of a drive gear and an idler gear that is caused to turn by the former. The tracks are spaced from the gears to prevent damping of vibrations of the former. The leading edges of the teeth on the gears have a radius thereon for providing smooth feeding action of the capacitor leads between the gear teeth. The drive gear also has a chamfer on the top edges of the teeth thereof to reduce the possibility of jamming on components with bent leads. A disk is attached to the underside of the idler gear for cutting the component leads to a prescribed length as they pass between the disk and the drive gear. The ends of the teeth on the idler gear are truncated such that a cut lead is compressed into a valley between teeth on the drive gear to thereby straighten these leads.

Abstract: In a disconnect circuit including a pair of transistor switches that are connected in series between associated lines of a cable pair and a subscriber carrier charging circuit for selectively blocking central office battery line current to the latter during ringing of a physical subscriber handset and when the latter is off hook and is dialing, the capacitor controlling delayed turn-on of the switches is coupled thereto through a capacitive multiplier circuit. A first resistor, Zener diode, and second resistor are connected between the cable pair input sides of the switches. A control transistor is connected between the base electrodes of the switching transistors and one side of the diode. The capacitive multiplier here comprises a pair of transistors connected as a Darlington compound between the capacitor and diode for converting a variable input current to a constant low-level current for charging the capacitor, the multiplier transistors bypassing the remainder of this input current.

Abstract: This invention relates to a component terminal system adapted to receive a combination of integrated circuits and individual discrete components. The terminal system includes a circuit terminal projecting above a frame to which a circuit connection may be made. A second terminal projects inward from the adjacent side of the frame and forms a V-shaped trough for receiving the wire leads from the integrated circuit and/or discrete components. A bus strap may be placed on the top and/or the bottom of the mounting panel and a pin may be inserted through the mounting panel making contact to the respective bus to provide a connection point between the bus and the circuit terminals.

Abstract: Apparatus in a remotely controlled telephone answering device providing an audio or voice message indicating the time elapsed or, alternatively, the amount of tape used in recording telephone messages. In one embodiment, the apparatus comprises a recording medium such as a magnetic tape having the positional information pre-recorded thereon in a first channel and having a second channel for recording telephone messages. A playback head having first and second magnetic transducers respectively aligned with the first and second channels is coupled to a playback amplifier through a head switching relay. The relay is remotely controlled to selectively couple the transducers, one at a time, to the playback amplifier for playing back the positional information and the recorded messages.