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    • 2. 发明专利
    • Improvements in or relating to call indicators for telephone systems
    • GB165569A
    • 1921-07-07
    • GB1037420
    • 1920-04-14
    • AUTOMATIC TELEPHONE MFG CO LTDJOHN SAVINSIDNEY REYNELL SMITH
    • H04M3/64
    • 165,569. Automatic Telephone Manufacturing Co., Ltd., Savin, J., and Smith, S. R. April 14, 1920. Addition to 129,563. Order apparatus.-Relates to a modification of the call indicator for signalling a telephone subscribers' number to a manual operator, described in the parent Specification. A plurality of number wheels rctatably mounted on a shaft 3, Fig. 3, and adapted to be actuated successivelv in a step-by-step manner by impulses transmitted by a subscriber, are now controlled by separate pawls 30 (one for each number wheel) which are rendered operative in succession to rotate their corresponding number wheels. The number wheels are adapted to be rotated by the ratchet-wheels 10, Figs. 2 and 3, and normally rest with their pins 11 pressing against the combined stop and pawl-guiding members 12. Mounted parallel to the shaft 3 is a spindle 13 having ratchet wheels 14, 15, cut at each end and provided with staggered flats 54 - - 57, Fig. 4, one for each number-wheel, each flat coming successively under a stepping pawl 30 to render it operative as the spindle 13 is rotated. At right-angles to the axis of the shaft 3 are arranged three operating magnets, viz. a selector magnet 18, a stepping magnet 19, and a release magnet 20. The armature 21 of the selector magnet 18 has pivoted to it an extension piece 22 ending in a pawl which engages with the ratchet 14 and effects the rotation of the spindle 13. The stepping-magnet 19 is provided with an armature 24, on the pivoted extension pieces 25, 26 of which is mounted a frame 28 carrying a shaft 29 on which are mounted the pawls 30. A pawl 30, however, does not engage with its corresponding ratchet 10 unless it rests upon a flat on the spindle 13. The armature 31, Fig. 1, of the release magnet 20 is pivotally connected to a lever 23 engaging the ratchet 15. The operation of the device is described with reference to a system in which an automatic subscriber is first connected to an idle junction line leading to a manual exchange and a rotary switch is then energized to select an idle number indicator. A holding relay 43, Fig. 6, is thereby energized over a. wiper 42 of the rotary switch. The subsequent response of the release relay 45 causes the energization of magnets 18 and 20, the magnet 18 rotating the spindle 13 one step and the magnet 20 preventde-energization of the selector magn.et 18, but on brought under the pawl 30 of the number wheel 4, and allows this pawl only to engage with the ratchet 10. Projections 48 on the spindle 13 also move from engagement with release levers 49, Fig. 2, which engage with the ratchets 10 to prevent their clockwise rotation. Impulses dialled by the subscriber now operate the stepping magnet 19 to set the first number wheel 4. The response of the series relay 47 causes the deenergization of the selector magnet 18, but on the cessation of the first series of impulses it steps the spindle round to the next position, in which the flat 54, Fig. 4, is brought under the pawl 30, of the second number wheel 5, which on the transmission of the next series of impulses is rotated to show the next digit. The operation previously described is then repeated for further digits. After the last digit has been dialled the selector 18 is again energized to rotate the spindle 13 a further step, which causes the projections 48 to separate the springs 53 and break the circuit of the stepping-magnet 19. A lamp may also be lighted to indicate that the call is completed. Insertion of the junction line plug into the jack of the required number causes the de-energization in turn of the relays 43, 45 and the magnets 20, 18. The release magnet 20 permits the spindle 13 to return to its normal position in which the projections 48 engage with the levers 49 to release the number wheels. Specification 166,351, [Class 40 (iv), Telephones &c.], is referred to. Specification 163,807 is referred to in the Provisional Specification.
    • 3. 发明专利
    • Improvements in or relating to switching apparatus for telephone systems
    • GB264616A
    • 1927-01-27
    • GB2799125
    • 1925-11-06
    • AUTOMATIC TELEPHONE MFG CO LTDJOHN SAVINROBERT EDWARD BOYD
    • H01H67/06
    • 264,616. Automatic Telephone Manufacturing Co., Ltd., Savin, J., and Boyd, R. E. Nov. 6, 1925. Automatic exchange apparatus.-The parts of single-motion rotary switches more particularly of the kind described in Specifications 131,716, and 179,157, for use, for instance, for controlling impulses in a register sender, are modified in construction and material to improve their wearing qualities and ease of replacement. Construction. The wipers 10 are of the shape shown and are suitably spaced, insulated at 22 in pairs, and held from rotation between a flange and a nut 26, Fig. 4, on an insulated metal tube 14. The wiper unit is fixedly mounted on a tube 28, Fig .3, on the ratchet wheel 27. The tube 28 is journaled on a spindle 31, Fig. 1, which is positioned in bearings in the frame 32 by a catch 35. The pawl 51, Fig. 1, is U-shaped in plan, the base thereof having a projection 52 engaging the ratchet and an enlargement 62 engaging a hexagonal stop-nut 63.. The pawl and ratchet lie in the same vertical plane, Fig. 1. The armature 49, 50 of the magnet 42 is journaled on a pin removably fixed by a catch 47 in extensions 46 of the U-shaped yoke 45. The arm 50 carries the pivoted pawl 51, a removable shoe 55 engaging with the armature spring 56, and a projection fitted with an insulation bush 57 for operating the interrupter springs 58, 59. The bank contact frame is adjustably mounted on the frame 32. The number disc is formed by a metal stamping having a graduated cylindrical edge. An adjustable detent spring 64 is provided. The armature is adjustable by a cam arm 60. Materials. The wipers, the wiper contact springs, the detent spring 64 and the bank contacts are made of nickel silver alloy, the latter being of harder temper than the wipers. The ratchet wheel is of tobin bronze, while the pawl is a steel stamping, the projection 52 thereof being hardened. The shoe 55 is of hardened steel. The insulation is of phenol fibre, the bush 57 being alternatively of ebonite or the like.
    • 4. 发明专利
    • Improvements in or relating to telephone systems
    • GB164135A
    • 1921-06-06
    • GB659120
    • 1920-03-04
    • AUTOMATIC TELEPHONE MFG CO LTDJOHN SAVIN
    • H04M17/02
    • 164,135. Automatic Telephone Manufacturing Co., Ltd., and Savin, J. March 4, 1920. Coin-freed and metering systems.-Arrangements are made whereby a subscriber cannot make a call without performing an operation distinct from that of lifting the receiver. If the call is effective, the usual current reversal in the case of automatic exchange systems effects the operation of the meter or the collection of the coin; if the call is non-effective, the coin may be recovered by the subscriber. In the system shown in Fig. 1, the subscriber after lifting the receiver 1 cannot effectively dial his call since the dialsprings 11 are short-circuited by the circuit 1, 4, contact 5, and contact 9. On pressing the key 6, however, the contact 5 is broken and the magnet 8 is energized, tilting its polarized armature 7 so as to break the short-circuit at the contact 9. At the same time, the pawl 12 is forced by the spring 13 to engage the next tooth of the ratchet 14 of the meter. If the call is effective, the reversal of the line current restores the armature 7 to the position shown, thus metering the call and' providing a circuit for the conversation. In manual exchange systems, the button 6 is operated at the operator's request and by earthing the line furnishes a signal at the exchange. In a modification, a coin performs the same function as the buton 6. It is retained bv the armature 7 until communication is established when it is collected. In a further modification, Fig. 3, the coin is returned to the caller if the call is non- effective by movement of the rod 18, the collet 20 at the same time breaking circuit with the exchange to prevent fraud. A dash-pot 25 prevents too rapid movement of the rod 18. In case the caller forgets to recover a coin, means are provided whereby hanging up the receiver or, according to the Provisional Specification, leaving the telephone box, effects its collection. As shown, hanging up the receiver completes a circuit through the contact 24 and an auxiliary winding 22 on the magnet 8 which causes restoration of the armature to the normal position.
    • 8. 发明专利
    • Improvements in Electrical Relays.
    • GB191505596A
    • 1916-04-13
    • GB191505596D
    • 1915-04-14
    • AUTOMATIC TELEPHONE MFG CO LTDJOHN SAVIN
    • H01H50/34
    • 5596. Savin, J., and Automatic Telephone Manufacturing Co. April 14. Relays.-In relays of the kind in which a bell-crank armature 4 is pivoted at the outer end of a bracket 3 extending from the base of the relay and over the coil 2, the bracket 3 is cranked downwards and grooved on its underside so as to lie closely around the coil towards the front of the relay. The armature 4 comprises a flat member 17 lying opposite to the end 5 of the core, and a bell-crank member 16, the horizontal arm of which is of open rectangular form resting on the top of the bracket 3, the vertical arm being adjustably connected by a screw 19 to the flat member 17. A spring 18 of double- U form.is secured centrally to the member 17, and its free ends engage and press outwardly the vertical arm of the member 16. The bell-crank armature is pressed down on the bracket 3 by a flat spring 6 which is slotted to engage over a vertical lug on the armature. Depending pins 11 on the central leaves of the contact springs 9 are engaged by a transverse member of the armature. The screw 20, by which the spring 18 is secured, is of non-magnetic material and projects through the armature 17 to prevent contact thereof with the core.
    • 9. 发明专利
    • Improvements in or relating to Telephone system.
    • GB191403195A
    • 1915-02-08
    • GB191403195D
    • 1914-02-06
    • AUTOMATIC TELEPHONE MFG CO LTDJOHN SAVIN
    • 3195. Automatic Telephone Manufacturing Co., and Savin, J. Feb. 6 Hiring telephone apparatus; coin action, weight; coin action, mechanical-connexion.- Relates to telephone systems in which substation coin collectors are rendered operable by the calling party or in some cases by the called party, after but not before the current on 'the line has been reversed by the operator or by the reply of the called party, this reversal rendering the sub-station speaking instruments inoperative until the party restores the circuits to their normal condition by inserting a coin. A modified form of apparatus is described which is adapted for use at a sub-station at which two kinds of calls are received, namely calls, such as full-automatic calls in which the line current is reversed, and calls in which the line current is not reversed, the insertion of a coin being necessary in each case. The coin-collector shown in Fig. 1 is of the kind described in Specification 687/12 in which, when the line current is reversed, a polarized relay 14 moves a trigger 18 so as to short-circuit the microphone 8 and shunt the receiver 7 with a resistance 63, the trigger 18 being tripped by the insertion of a coin in the shoot 24. The relay 14 is provided with an additional contact 23, which connects a buzzer 25, shunted by a resistance 26, to the line 48, and thus shunts the supervisory relay 42 so that this lights the calling supervisory lamp 40 until the coin is inserted at the sub-station. In the modified arrangement shown in Fig. 3, suitable for use at coin-box stations in which two kinds of calls are received, as previously explained, the polarized relay 70 is provided with contacts for short-circuiting the telephone instruments, as before, and may be provided with additional contacts 87, 88 for connecting the buzzer 86 to the line. The coin is deposited in a carrier 74 mounted on a rotary shaft loosely carrying a disk 80 and cam 81, which by closing contact 83 connects the buzzer 86 to line and by moving lever 84 trips the trigger 85. After inserting the coin, the subscriber rotates the shaft so as to turn the coin upside down, the portion of the coin, which fills the notch 75, engaging a catch to prevent backward rotation of the carrier, and closing contact 78 to shunt the microphone. The portion of the coin which fills the slot 76 engages a pin 79 in the disk 80 and thus rotates the cam 81. When a manual call is received without reversal of the line current, the polarized relay 70 does' not operate the trigger 85, the insertion of the coin being notified to the operator by the connexion of the buzzer 86 over contact 83 to the line. When an automatic call is made, the reversal of the line current causes the relay 70 to shunt the speaking instruments, this shunt being removed when the trigger 85 is tripped by the lever 84. If the springs 87, 88 are provided, the connexion of the buzzer 86 to line serves not only as a reminder to the calling subscriber to deposit a coin, but also as a notification to the called subscriber that the calling station is a - coin-box station. The Provisional Specification describes a construction of coin collector in which a coin inserted at any time, except when the polarized magnet is energized by the reversal of the line current, is returned to the subscriber.