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    • 1. 发明专利
    • Improvements in or relating to electro-magnetic relays or indicating instruments
    • GB293083A
    • 1928-06-22
    • GB796227
    • 1927-03-22
    • GEN ELECTRIC CO LTDARTHUR ERNEST ANGOLD
    • H01H51/22
    • 293,083. General Electric Co., Ltd., and Angold, A. E., March 22, 1927. Drawings to Specification. Detecting and indicating faults.- In a directcurrent relay or indicating instrument having an armature which is adapted to be moved by differentially acting forces caused by currents flowing in conductors, the current flowing in one conductor or set of conductors is arranged to give the armature magnetic polarity in the same sense as that produced by the current flowing in the other conductor or set of conductors. As shown in Figs. 1 and 2 of Specification 293,082 currents are arranged to flow in similar directions along bus-bars 1, 2. Supported at the sides of the bus-bars are two pairs of pivotally mounted permanent magnets 15, 16 and 17, 18 carried on frames 13, 14 the frames being carried on knife-edge trunnions 30 suspended by springs 31, each frame being balanced by weights 23 and the adjacent ends of the frame being connected by a link 26. The adjacent poles of the pairs of permanent magnets are arranged so that common flux flows through magnetic 15, 16 and through magnets 17, 18. Thus when the currents in bus-bars 1, 2 are equal the forces at opposite ends of the magnets are equal and opposite and no movement of the armature occurs but with unequal currents the frames are rotated in opposite senses and operate relay contacts or give an indication of the lack of balance. To make this action as powerful as possible, the bus-bars are shaped to give a small air gap between the adjacent magnet poles with a comparatively high current density at these points. and mica plates 19, 20 are mounted at their sides to prevent contact between the magnets and busbars. Recesses 5, 6 are provided in the bus-bars to permit of movement of the controlled contact elements (not shown). The flux due to the currents flowing in the bus-bars in each case assists the flux of the permanent magnets and in view of the added flux due to the currents flowing the relay is more sensitive to small differences of current when large currents are flowing in the bus-bars than with small currents, although the permanent magnetism is such as to ensure the necessary sensitivity in the latter case. The arrangement of the magnets give the armature astatic characteristics and in view of the mechanical arrangement of the frames 13, 14 and their associated parts the relay is unaffected by rolling or pitching motion to which the relay may be subjected in the manner described in Specification 293,082.
    • 2. 发明专利
    • Improvements in electro-magnetically operated indicating instruments or relays
    • GB272574A
    • 1927-06-07
    • GB598826
    • 1926-03-03
    • GEN ELECTRIC CO LTDARTHUR ERNEST ANGOLD
    • H01H50/16
    • 272,574. General Electric Co., Ltd., and Angold, A. E. March 3, 1926. E l e c t r o magnetic switches. - A relav comprises a pivotally mounted magnet having a pole biassed towards a point at or near the centre of the length of a relatively long solenoid and adapted to move parallel to the axis of the solenoid. Within definite limits of movement, the force acting on the magnet is substantially proportional to the value of the current in the solenoid since the poles of the solenoid have no effect on the magnet. As shown a pivotally mounted bar magnet 4 co-operates with the solenoids 2, 3 wound in series on an iron ring 1 to produce when current flows torques which act on the magnet in the same direction and consequent poles at the unwound portions of the ring 1. Separate solenoids may be employed to produce a differential torque or movement of the magnet in one or other direction. Instead of a single bar magnet a group of magnets or an electromagnet may be employed. The solenoids mav be arranged on arcs of different radii. The Provisional Specification states that the consequent poles may be utilized for producing an adequate closing force for the contacts of the relay.
    • 8. 发明专利
    • Improvements in and relating to means for charging portable electric accumulators
    • GB170701A
    • 1921-11-03
    • GB2348020
    • 1920-08-11
    • ADOLPH HARRY RAILINGARTHUR ERNEST ANGOLD
    • H01M10/46
    • 170,701. Railing, A. H., and Angold, A. E. Aug. 11, 1920. Stands.-A charging-stand is provided with a number of sloping sheet-metal shelves A, the front edge A of each shelf being turned upwards and the rear edge A downwards to prevent dripping of acid on to the cells below. Spring contacts B are fixed to china plates D beneath each shelf by screws S, which are fitted with closed nuts G. Rubber washers F may be placed between the plates D and the shelves. The cells are carried by trays H which are positioned by notches H with which the nuts G engage. The end contact J on each shelf as shown in Fig. 5 has fixed to it a stout metal rod K which passes through an insulating-bushing L in the rear edge A of the shelf and is connected to the end contact on the adjacent shelf. The rods K are sufficiently stout to support themselves clear of other parts of the stand. According to the Provisional Specification, in order to ensure correct positioning of the cells, each tray is made with one edge higher than the other, the cells being provided with projections which will pass over the lower edges of the trays but not over the higher edges.
    • 9. 发明专利
    • Improvements in or relating to the control of electric switches
    • GB329425A
    • 1930-05-22
    • GB774929
    • 1929-03-09
    • GEN ELECTRIC CO LTDARTHUR ERNEST ANGOLD
    • H01H9/26
    • 329,425. General Electric Co., Ltd., and Angold, A. E. March 9, 1929. Systems depending on static transformers.- Apparatus for operating a switch (particularly for a transformer tap-changer) comprises an energystoring device, and a device the position of which is dependent on the energy stored and which allows the stored energy to operate the switch only if it has reached a given value sufficient to operate the switch, the latter then being operated by the stored energy. The lines 1 - - 4 of a three-phase, 4-wire, system energize the similar control systems of two transformer tap-changers, the actual tap-changing operation being effected by a maltese cross 18 as described in Specification 324,460, [Class 38 (ii), Electric currents, Converting &c.]. The cross is driven by a motor 5 through gearing which also drives a drum controller 13 (Fig. 2) for effecting the necessary control circuit changes during an operation. The motor shaft has at one end a flywheel 6 controlled by a solenoid-retracted brake 7, and at the other end a centrifugal switch 9 which closes contacts 10 at low, and contacts 11, 169 at high, speeds of the motor 5. The latter is controlled by forward and reverse contactors 21, 22, with closing coils 32, 44 respectively energized by push-button switches 33, 34, for individual operation. Limit switches 7 are adapted to be opened by gearing driven from the motor 5 after the final tap-changing operations are over, these switches opening the motor, brake, and contactor circuits to prevent further operation in the forward and reverse direction. The transformer is connected to the bus-bars by an oil switch 53 closed by a motor 58 controlled through contactors 59, 60 by a push-button 61, 62 being a pushbutton for tripping the switch. The drum 13 is adapted to make one revolution for every tapchange and carries contact segments 76 - - 87 co-operating with contacts in leads 67 - - 75 and additional segments 171, 172 for use on a transformer disconnected from the busbars. A changeover switch 84 on each unit controls the connections for individual and parallel control. For individual control of, say, No. 1 unit, switch 84 of that unit is moved to the dotted position and, a trip coil 56 and no-volt coil 55 being permanently connected across the lines 1, 4, the push-button 61 of the unit is pressed to energize the coil 99. The coil 99 makes a maintaining circuit for itself and closes the contactor 60, which energizes the coil 107 to close contactor 59 and start up the motor 58. When the latter has closed the switch 53 and connected up the transformer, the contacts 103, 108 are opened to de-energize the contactors 59, 60 and stop the motor. To raise the transformer voltage, button 33 is pressed thereby energizing the coil 43 and closing contactor 21 and also removing the brake 19. The motor 5 starts up and after a time the " accelerating segment 77 on the drum 13 breaks its connection with the leads 68, 71 and the contactor 21 opens. The energy of the flywheel 6, however, causes the completion of the tap-change, but only if the speed is enough to close contacts 11, 169 and hold the brake 7 off. If the speed is not high enough the contacts 10 will be closed instead, so as to energize the contactor 22 and reverse the motor to return the parts to their original position. If, while the actual tap-change is being performed, the speed falls sufficiently, the contacts 10 will close and establish a circuit between 63, segment 87, and 74, to short-circuit the no-volt coil 55 and open the main switch 53. At the end of a successful tap-change, the segment 85 makes contact and contacts 10 close, thus energizing the contactor 21 and causing the drum to creep home. To lower the voltage, the reverse push-button 34 is closed and a similar operation takes place in the reverse direction. For parallel operation, the switches 84 are moved over and the transformer connected to the bus-bars by the buttons 61. The forward button 37 is pressed to energize the closing coil 45 of the forward contactor 35, which in turn closes the contactor coils 43 of both units. If either motor fails to speed up, both units are returned to the original position on closure of the contacts 10 of the faulty unit. The reverse operation is similar, using the button 38 and contactor 36. The switches 53 are adapted to be tripped open on fault by closure of contacts 120, 121 to energize a lock-out relay 57. The latter, which is locked out after operation, closes the circuit of the trip coil 54, indicators 152 indicating the nature of the fault according to which of the contacts 120 or 121 are closed. Specification 325,319, [Class 38 (v), Electric switches &c.], is referred to in this respect. Means for indicating which tap is in circuit may be provided, as described in Specification 329,736. In the case of parallel operation, even if one transformer is tripped out, its controller will run in synchronism with the other, so as to be ready for switching in again. The flywheels may be provided with handles for speeding up and tap-changing manually. The Provisional Specification also states that, after, say, two unsuccessful attempts to effect a change, means may be provided for preventing further attempts and that means may be provided for ensuring that an incoming transformer is connected to the right tap.
    • 10. 发明专利
    • Improvements in or relating to the automatic control of electrical power supply units
    • GB329400A
    • 1930-05-22
    • GB594129
    • 1929-02-22
    • GEN ELECTRIC CO LTDARTHUR ERNEST ANGOLD
    • H02P5/68
    • 329,400. General Electric Co., Ltd., and Angold, A. E. Feb, 22, 1929. Running generators in parallel.-A number of supply units are automatically withdrawn from operation in circular sequence under the control of load responsive means so that when a unit is withdrawn the remaining units operate at or over their full or most efficient loading. The last machine may be withdrawn only when the load has fallen to a small fraction of its full-load rating. If there are n-1 units in operation a unit is withdrawn when the power supplied by that unit is less than that at which it is withdrawn when n units are in operation. Two multiplecontact relays 6, 7 effect the initiation in circular sequence of known means for starting up and shutting down the units respectively and a selective device 17 of the kind described in Specification 329,678, [Class 38 (v), Electric switches &c.], renders the contacts of these relays effective in accordance with the number of units in operation. The load responsive means comprises an underload relay 8 and an overload relay 9 co-operating respectively with the relays 7, 6 and appropriate contacts shown on the right and left respectively of the moving contact 82 of the selective device 17. The setting of the underload relay 8 determines the load conditions under which the next machine in the sequence is withdrawn from operation. Each of the circuit-breakers 31 - - 34 of the units 1 - - 4 has an auxiliary contact 35 which, when the unit is paralleled, energizes a solenoid 36 - - 39 of the selective device. All the solenoid cores are interconnected by links 101 - - 103 which support the contact 82 so that its position depends only upon the number of solenoids energized, i.e. the number of units in service. With all units idle as shown a voltage relay 52, on low volts of the system 5, energizes the relay 6 from bus-bars 54, 55 by way of contacts 82, 61, 58 and the first unit in sequence is started and paralleled. Rising output from this unit lifts the cores of overload and underload relays 9, 8, opening contact 21 and closing contacts 13, 16. The contact 82 having been raised into engagement with contact 63 the connection 13, 16 energizes once more the relay 6, contact 58 being now open, and a second unit is paralleled. The contact 82 is raised a further step and the process continues as load rises until all units may be in operation and contact 82 in engagement with contact 76, contacts 21 - - 24 being open and contacts 13 - - 15 closed. As the load falls the contacts 24 - - 21 close in succession at load values depending upon the adjustment of the relay 8 and, in the system described, these closures occur at 2.8, 1.8, 0.8 and 0.05 times the full load output of a single generator. The contact 82 is in engagement with the appropriate right hand fixed contact of the relay 17, according to the number of machines in service, each time a contact 24 - - 21 closes, and the closing- down relay 7 is accordingly energized to shut down units in sequence. Specification 261,844 also is referred to.