| 摘要 |
1,180,309. Magnetic storage matrices. R.C.A. CORP. 24 May, 1968 [22 June, 1967 (3), No. 24836/68. Heading H3B. In an arrangement for threading apertured magnetic cores 4 previously assembled in matrix formation between upper and lower grooved portions 2, 2a of a jig, Fig. 4, the threading wires 13 are located in spaced parallel relationship in a feed mechanism 37 which includes a feed roller 53 for concurrently advancing all the wires along the jig grooves, and hence through the core apertures, the feed mechanism also including a screw-operated clamp 60 for workhardening the leading portion of each wire and a movable knife edge for notching each wire so that the wires may be broken by subsequent tensioning. As wire threading takes place from each face of the rectangular jig, in turn, to form a wired matrix with X and Y lines, a sense line and an inhibit line, the jig is mounted on a turntable 30 provided with indexing recesses 41 for a spring-loaded pin 40. The lower edge of the turntable engages a cam 70 so that the turntable platform is raised each time a fresh jig face is presented to the feed mechanism for wire insertion, the vertical displacement of the turntable-supported jig enabling the wires to be threaded in a regular overlapping order. The wires originate from individual spools housed in a storage box, Fig. 3 (not shown), and are distributed into respective grooves in the feed mechanism by a curved transition plate 17. To operate the arrangement, the wires are extended through the feed mechanism and are clamped by a locking comb, identical to comb 45, located between the jig and the feed mechanism. The wires are then tightened by reversing the feed roller 53 and are then hardened by the clamp 60 and notched by the knife edge 65. The feed mechanism is then moved as a whole away from the turntable by sliding in a channelled support member 36 so as to break the wires, each wire being left with a cone-shaped leading end. After removal of the locking comb, the feed mechanism is moved forward until it is adjacent the jig, and wire feeding through the jig grooves and core apertures is effected by forward rotation of the feed roller. The emergent wires engage comb clamp 45 where they are secured, and the process of hardening, notching and breaking is repeated. A transfer jig 80, Fig. 7, which fits over the jig is used to hold the locking combs and wires of a previously formed matrix line in a tensioned non-interfering position. When wiring is completed, the wired matrix, with the core jig now removed, is transferred to a printed circuit board 91, Fig. 8, where it fits into a rectangular aperture 95. The printed circuit board is mounted in a final jig 90 to which the locking combs are secured to restore the wire tension. The matrix wiring is then soldered to printed circuit pads 96 and the combs and wire ends removed. 1,180,328. Transistor circuits. UNITED STATES TIME CORP. 30 Aug., 1968 [28 Sept., 1967, No. 41663/68. Heading H3T. [Also in Divisions G3 and H2] In a watch movement, magnets attached to a rotating balance induce a sinusoidally varying voltage, Fig. 6, in a toroidal coil. The rising portion a, b, c of the voltage produces a positive signal which is fed to the input gate 83 of an " and " circuit 56 and a negative signal which is fed via an inverter and a time delay circuit 55 to the other gate 82. The circuit 55 ensures that both inputs to the " and " circuit arrive simultaneously so that an output pulse is fed to a multivibrator 60, the output of which is fed to motor means 18 such as a solenoid 96. The solenoid indexes an armature to drive the watch movement and also winds the hair spring of the watch to maintain its oscillation. The circuit ensures that a pulse is not fed to the solenoid when the pick-up voltage falls through zero as shown at d, e, f, Fig. 6. Transistors 84, 85 in the " and " circuit may be replaced by reed relays and the multivibrator 60 may be replaced by a Schmitt trigger. The entire circuit is preferably formed by micro-circuit techniques, for example on a single wafer of silicon. The circuit may be supplied by a battery, a solar cell or a rechargeable cell. |
