Abstract: Apparatus for attaching insulation penetrating connectors to the ends of flat multiple pair cables has a sheath stripping station and a connector attaching station. Spaced knives slit the sheath crosswise of the cable and translate in the direction of the cable to strip the sheathing while conductor separating and engaging combs engage on each side of the cable one conductor of each pair of conductors prior to complete removal of the severed sheath end but operative upon complete sheath removal to separate the conductors into two planar arrays diverging in opposite directions from the general plane of the cable. A carriage holding the cable with bared end is arranged to translate from the sheath stripping station to the connector attaching station where connector holding jaws are articulable for the purpose.

Abstract: A DTMF encoder at a central office is connected to a spare pair of a feeder cable for remotely controlling with a 5-digit number a series of relay coil matrices where the coils perform latch and release functions for 50 latching relays in each matrix. Two of the digits select the matrix and two other digits select the relay coil to be energized. The fifth digit selects the crossconnect box or pedestal from a plurality of the same. The 50 relays are connected in pairs to serve 25 incoming pairs, each pair of relays being arranged to selectively connect its associated incoming pair to any one of three corresponding outgoing pairs or terminals. Energizing current is supplied to a selected coil only upon receipt of the last of the five digits and only for a brief interval. Power for the remote apparatus is supplied from the central office via a phantom circuit over the same spare pair.

Abstract: A macro phase detector responds to large phase deviation between a locally generated signal and a reference signal for actuating a successive frequency approximation register to effect major count alteration in a counter for controlling a digital-to-analog converter and, in turn, a voltage controlled oscillator. Small phase error is detected by a phase detector, averaged, and employed to alter the count in the counter for introducing sensitive frequency adjustment. A second counter is clocked by the phase detector at one half the rate of the first counter and is used to update the first counter each time the phase difference reverses polarity. Loss of reference signal activates a detector for freezing the count in the counter to maintain frequency and phase within the accuracy of the controlled oscillator.

Abstract: A disconnecting device is inserted in a two-wire communication loop near the far end thereof. The device contains a latching winding of a latching relay which winding is inserted in series with one side of the loop. The winding controls two normally closed contact pairs, one pair being inserted in series with each side of the loop to disconnect a far end telephone or the like when the winding is energized. A shunt diode and capacitor prevent activation of the latching winding by normal battery and signal current. Reverse polarity voltage of greater value than normal battery will activate the latching winding and effect far end disconnection. A reset winding of the relay is connected in series with a diac, a diode, a time constant resistor and a normally open pair of contacts of the latching relay, across the loop. Each of the normally closed contact pairs is shunted by a resistor to permit current flow past the contacts when open.

Abstract: This disclosure relates to the construction and method of using synthetic diamond dies for drawing wire through a land or throat of a passage through the diamond die with the land or throat located midway between the opposite sides of the synthetic diamond and with approach passages located at opposite ends of the land so that the wire can be pulled through the die in either direction. This increases the useful life of the die before it becomes necessary to resize the die. The object of the invention is to reduce the cost of wire drawing through synthetic diamond dies.

Abstract: This invention contemplates method and apparatus for laying rodent-protected cable from a moving vehicle, using unprotected cable to which sheathed cementitious material is applied prior to subterrain burial. The sheathing serves only to retain shape of fresh, unset cementitious material around the cable in the course of handling and transport within and from the vehicle structure, to the buried position of the cable. The sheathing being degradable (in the course of time) and no longer needed once the sheathed cementitious material has set, after burial.

Abstract: A simple tool, involving a suitably grooved flat base and a stripping blade movably connected thereto whereby the blade may be simply moved in and out of its stripping position, and wherein its cutting edge straddles a plurality of the base grooves. The grooves are sized as to depth, appropriate to the diameter of the optical fiber and its buffer coat, and with a small clearance, such that when the coated fiber is held and drawn in a first groove, the blade is never loaded against the glass fiber, so that the blade strips only the coating from only one side of the buffered fiber, without scoring contact with the fiber core, and further such that upon 180.degree. rotation of the fiber to place it in a second groove, the drawn fiber will be stripped of the remaining coating, also without scoring contact with the fiber core.

Abstract: For spliced connection of multi-channel optical-fiber cable ends, the invention contemplates provision of a splice case internally adapted for the storage of excess length of cable in an accumulator and near the splice region, there being a splice mount that is removably secured to the accumulator, so that stored excess cable length will permit selective removal of the splice mount and all its fiber splices to a working location remote from the splice case and its accumulator, all without disturbing the continuous communicating connection of splice fibers not requiring service maintenance or repair. When the servicing operation has been completed, the excess cable length is readily re-coiled into the accumulator, the splice mount is returned to its secured position, and the splice case is re-closed.

Abstract: The invention contemplates a cord set involving a plug unit connected to one end of a multiple-conductor cord or cable, and destined to concurrently serve different electrical loads within a given utilization device. A suitably miniaturized power-factor control circuit is embodied within the plug, so that when plugged into a conventional a-c power outlet receptacle, a first two of the cable conductors can deliver suitably modified voltage appropriate to the instantaneous load requirements served by the modified voltage, while one of these first two cable conductors and a third cable conductor can concurrently deliver voltage appropriate to the different electrical load which it serves.

Abstract: This invention relates to stress control cones for terminations of high-voltage power transmission cables. Such cones are used beyond the end of the cable insulation shielding, and for the purpose of providing thicker insulation for reducing the stress at and beyond the unshielded insulation on a high-voltage power cable. This invention builds up greater thickness of insulation beyond the end of the cable insulation shield, preferably by wrapping the cable with layers of insulating tapes that are then heated and fused to one another and to the outside surface of the cable insulation. The hot build-up of additional insulation is fused, or brought to incipient fusion, to merge the build-up to the cable insulation and the build-up layers to one another, instead of using preformed stress relief cones which are unsuitable for very high voltage.

Abstract: This specification describes an improvement in miniature plugs that are used for connecting together a telephone handset to a jack in the base of a telephone, and for connecting the base to a wall outlet or jack. Such plugs, particularly when used for handset cords, are pulled and flexed during normal use, and this causes movement that results in damage to contacts in miniature plugs so that reception becomes progressively more noisy, and the miniature plug has to be eventually replaced. This invention provides an effective structure for eliminating the motion and the problem that the motion causes.

Abstract: Conventional communication cables must be spliced and so must fiber optic cables. Special care must be taken at splice points or locations so as not to cause faults in the optical fibers and still have an organized packaging and splicing arrangement. Optical fibers, unlike copper wire conductors, have memory. This causes a problem, for example, since one can splice a copper pair, coil it up or place it in a splice case, and it will stay. If the same thing is done on an optical fiber, it will not stay as placed and in fact will recoil like a spring. This invention comprises a fiber organizer, made up of a series of channels, and it can accommodate and secure individual spliced fibers from each length of the optical cables. Also the organizer provides a fiber splice support section in which the splices are placed upon completion.

Abstract: This specification relates to a communication cable and method of making it, particularly where the cable includes a high pair count with small conductors so that the filling compound can be made to permeate to the center of the cable without having the filling compound become too viscous to reach the center of the cable when filled by the liquid filling process. The filling compound does not drip at temperatures up to 90.degree. C. From five to ten parts by weight are used of a polyethylene compound as one ingredient of the filler material. The major ingredient of the filler is a paraffinic oil which constitutes 100 parts of the filler compound. Other important considerations are to formulate the compound so that it will not permeate into the cells of the foam skin or all foam insulation.

Abstract: When metal clad cables are being installed, it is important that they be grounded to protect personnel in the event the cables comes in contact with an exposed electrical circuit in the building spaces. This invention provides a means for grounding the cable, and the grounding means are part of a spool assembly on which the cable is wound at the time that it is sold. The connection for grounding a cable is reliable and convenient, and the fact that it is part of the spool on which the cable is originally supplied to the user, makes it possible to keep the cost lower than presently used grounding apparatus of the prior art.