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21. 发明专利

GB593755A An electrical circuit arrangement for controlling alternating currents 未知
公开(公告)号：GB593755A
公开(公告)日：1947-10-24
申请号：GB47245
申请日：1945-01-05
申请人： ACE ELECTRONICS LTD , LESLIE CLAUDE WELCH , RONALD JOHN COOK
IPC分类号： G05F1/32
摘要： 593,755. Non-contact-making relays. ACE ELECTRONICS, Ltd., WELCH. L. C., and COOK, R. J. Jan. 5, 1945, No. 472. [Class 40 (iv)] [Also in Group XXXVII] An alternating-current relay comprises an inductance L, having a high-permeability magnetic core M, connected in series with a capacitance C so that the current flowing from an alternating current source S is normally insufficient to saturate the core, but if the core is saturated momentarily by applying an exciting impulse to the inductance, the resulting increased current due to the reduced impedance of the coil is sufficient to maintain it saturated. The required impulse is applied by the control winding 3, 4, and indication of the change-over from high to low impedance is given either by an armature (not shown) co-operating with the core M, or by a separate relay connected across the capacitance C and responding to the resulting increase in potential developed across it. The Provisional Specification refers to an application of the invention to temperature alarms, the impulse being applied by a thermocouple.

22. 发明专利

GB585562A Electrical impulse-counting apparatus 未知
公开(公告)号：GB585562A
公开(公告)日：1947-02-11
申请号：GB525745
申请日：1945-03-02
申请人： ACE ELECTRONICS LTD , LESLIE CLAUDE WELCH , RONALD JOHN COOK
IPC分类号： H03K21/00
摘要： 585,562. Pulse counting circuits. ACE ELECTRONICS, Ltd., WELCH, L. C., and COOK, R. J. March 2, 1945, No. 5257. [Class 40 (v)] [Also in Group XIX] An electrical impulse counter comprises a continuously rotating system with a synchronized marking pulse for registering a definite number value, wherein each impulse changes the phase of the marker pulse relative to the rotating system by a definite fraction of a cycle. In Fig. 3, sine waves are fed from oscillator 2 through 10 : 1 frequency divider 3 to a phase splitter 4 which supplies two equal outputs in phase quadrature to the deflection plates of the cathode-ray tube to produce a circular time base 35 on the screen (Fig. 4). Primary oscillations are also fed through another 10 : 1 frequency divider 6 and circuit element 8 to produce a series of sharp pulses which cause a radial deflection 36 on the cathode-ray tube in synchronism with the circular trace. Impulses from photo-cell 31 or a standard frequency oscillator 32 operate a biassed multivibrator 9 which controls a phasing device 5 comprising a phase-splitter in combination with a pair of ring modulators. This arrangement advances the phase of the oscillations applied to the frequency divider 6 by 36 degrees for each impulse, which corresponds to a change of 36 degrees in the phase of the marker pulse 36, moving it one division along the scale 37. The higher decade 370 is produced by the chain 38 to 41, 80. The primary frequency is restored without losing the phase division produced in divider 6 by additionally combining the output from a 9 : 1 multiplier 39 with the output from divider 6 in the mixermodulator 38. Further phase division is then produced in the 10: 1 divider 41 and sharp pulses are produced in impulse shaper 80 to provide a second radial deflection 360 on the indicator in synchronism with the circular time base. Thus, every 10 impulses from source 31 or 32 produce an advance of 36 degrees in the phase of marker pulse 360, moving it one division along the scale 370. Interference between two marker pulses 36, 360 during coincidences on the time base is prevented by utilising a multi-vibrator to sensitize impulse shapers 8, 80 alternately and present each marker in succession on separate traces. The system may be reset by closing switch 34A which locks the divider 6 in a fixed phase relationship to the scan voltages, corresponding to zero indications on scales 37, 370.

23. 发明专利

GB191215155A Improvements in or relating to the Stowage, Launching and Raising of Ships' Boats. 未知
公开(公告)号：GB191215155A
公开(公告)日：1913-07-28
申请号：GB191215155D
申请日：1912-06-28
申请人： JOHN COOK , THOMPSON JOHN AUGUSTUS , MACGREGOR JAMES
发明人： THOMPSON JOHN AUGUSTUS , MACGREGOR JAMES
IPC分类号： B63B23/04
摘要： 15,155. Cook, J., Thompson, J. A., and Macgregor, T. June 28. Davits.-T h e boats are handled by single davits swing- ing athwartship on horizontal pivots, the upper end of the davit being bent over so as to come over the centre of the boat. The davit 1 working on the pivot 2 is pulled outboard by an outhaul 4 led through a block 5 to a winch 6. The outboard movement of the davit is limited by a rope 8; inboard the davit rests against a stop 19. The fall 11 wound on the winch 6 is attached to the boat sling 14, and is provided with a stopper 16 which brings the davit inboard with the boat during the raising operation. In a modification, an inhaul rope is provided wound on a separate drum of the winch, and these drums may be coned to allow the inhaul and outhaul to be paid out or taken up at varying rates. Arrangements are also made for throwing the inhaul and outbaul drums out of gear with the fall drum when recovering the falls.

24. 发明专利

GB191225675A Improvements in and relating to Non-refillable Bottles. 未知
公开(公告)号：GB191225675A
公开(公告)日：1913-02-27
申请号：GB191225675D
申请日：1912-11-08
申请人： HAMILTON WILLIAM PINCKNEY DE F , DOXSEE JOHN COOK
发明人： HAMILTON WILLIAM PINCKNEY DE F , DOXSEE JOHN COOK
IPC分类号： B65D49/12
摘要： 25,675. Hamilton, W. P. de F., and Doxsee, J. C. Nov. 8. Bottles, non-refillable.-A frangible bottle neck is provided with vertical grooves 10, Fig. 2, to accommodate lugs 13, Fig. 4, of a plug 12, which is placed as shown in Fig. 2 as a stop beneath cement 12'. A row of perforations 15 is formed in the frangible part of the neck above a cork 9.

25. 发明专利

NZ538538A Improved method of laying a foundation 未知
公开(公告)号：NZ538538A
公开(公告)日：2005-06-24
申请号：NZ53853805
申请日：2005-02-28
申请人： DAVID JOHN COOK
发明人： COOK DAVID JOHN
IPC分类号： E02D11/00 , E02D27/00 , E02D27/02
摘要： A method for laying a foundation that includes digging a foundation trench, pouring concrete into the foundation trench to a first level and allowing the concrete to partially cure to a predetermined state. Press blocks into the concrete to a desired level equal to the desired finish height of the foundation by filling the blocks with sufficient concrete to complete the foundation where the predetermined state of the partially cured concrete is such that the partially cured concrete allows the blocks to be pressed into the surface of the concrete without risk of sinking further.

26. 发明专利

GB834022A Improvements relating to the charging of secondary batteries 未知
公开(公告)号：GB834022A
公开(公告)日：1960-05-04
申请号：GB2275956
申请日：1956-07-23
申请人： HAROLD MARTIN HARMER , FREDERICK JOHN COOK
IPC分类号： H02J7/00
摘要： 834,022. Battery charging systems. HARMER, H. M., and COOK, F. J. Oct. 18, 1957 [July 23, 1956], No. 22759(56. Class 38 (4). An apparatus for charging a multi-cell battery without large variations in the terminal voltage comprises a charger C1 connected across the whole battery and supplying the mean current of a load X and a second charger C2 connected to one or a small number of cells in sequence through a stepping switch comprising a ratchet R and a pawl T operated by a coil M energized by normally closed contacts F of a relay G, F. The connections to the battery are changed by arms P, N and contacts K. Additional contacts E, operated by an extension U of the pawl, and H operated by a slowrelease relay coil D step the mechanism over an off contact L to which may be connected a counting device. The charger C2 may be of the constant-voltage type, with the coil G in series, or a constant-current or combined type with the coil G connected across its terminals. Each cell may be provided with a catalytic converter to recombine the gases produced by electrolysis. To increase the charging rate of C1 after a mains failure, the charger C1 and load X may be switched normally or automatically across part of the battery, a rectifier being connected across the switch to preserve continuity of current flow during changeover.

27. 发明专利

GB781013A Improvements in wire stranding machine 未知
公开(公告)号：GB781013A
公开(公告)日：1957-08-14
申请号：GB681255
申请日：1955-03-08
申请人： JOHN COOK
IPC分类号： B21F7/00 , D07B3/08
摘要： 781,013. Machines for making wire ropes. COOK, J. March 8, 1955 [March 19, 1954], No. 6812/55. Class 109 A wire stranding machine comprises a base, a flyer 19. rotatably mounted thereon, a motor 57 and driving connection for rotating the flyer, a reel supporting member coaxial with the flyer to receive a reel and to rotate it relatively to the flyer, means 'for guiding wire strands to and on the flyer and to distribute them on to the reel, and a drive between the flyer and reel supporting member to control positively the relative motion between flyer and reel, and means for varying the ratio of the drive during the winding of wire on to the reel. Wires W from supply spools are led through a spider S into the bore of the shaft 27, thence around a pulley 20 to pulleys 56 on bars 55 of the flyer 19 driven by the motor 57 through pulleys 58 (not shown), 25 and belt 58a. The pulley 25 has attached thereto a pulley 24 which through a belt 63, drives a pulley 62 on a lay shaft 59, the pulley 62 being manually adjustable by a hand wheel 78 or automatically through a worm wheel 68 and shaft 67. The lay shaft 59, which is braked by an electric-type brake 59a when the motor 57 is switched off, through a belt 70 and pulley 71, drives the hollow shaft 36, which, through a dog plate 51 and pins 52 rotates the reel 53 to take up the twisted wires. A further motor 46 (not shown), through a screw, reciprocates the shaft 36 and hence the reel 53 to traverse the gauge.

28. 发明专利

GB595720A Electrical apparatus for measuring the proportions of mixtures and solutions 未知
公开(公告)号：GB595720A
公开(公告)日：1947-12-15
申请号：GB2173944
申请日：1944-11-06
申请人： ACE ELECTRONICS LTD , LESLIE CLAUDE WELCH , RONALD JOHN COOK
IPC分类号： G01N22/00
摘要： 595,720. Inductance and capacitance measurements ; determining physical qualities of materials; magnetic tests and measurements. ACE ELECTRONICS, Ltd., WELCH, L. C., and COOK, R. J. Nov. 6, 1944, No. 21739. [Class 37] An apparatus for determining the nature of mixtures or solutions and for determining the amounts of various substances present in a mixture or solution containing known substances in unknown proportions comprises an electromagnetic oscillatory system arranged to receive a sample to be tested so that the sample is located in predetermined relation to inductance or capacity elements of the oscillatory system and means for indicating the damping effect of the sample on the oscillatory system. A sample of a mixture in a container 3, Fig. 1, absorbs energy from an oscillatory system comprising a single-loop coil 1 and a pair of condenser electrodes 2 connected to the ends of the coil so as to form a very high frequency series tuned circuit energized by a valve 4. This has an effect on the grid current depending on the conductivity or dielectric loss of the sample so that the reading of a microammeter 9 is different for different mixtures. By plotting the readings of the different constituents, a curve can be obtained, so that for any reading the relative amounts of the constituents can be determined. In a modification, Fig. 2, a saw-tooth wave, produced by valves 19, 17 and condenser 18 and varied cyclically by the mains voltage 20, is applied to the oscillatory system 1, 2 so as to produce a response which rises to a maximum when the frequency of the oscillations is equal to the resonant frequency of the oscillatory system. This response, in the form of a series of surges, is synchronized with the peak response of the oscillatory system and applied to the Y-plates of a cathode-ray oscillograph 22. A voltage proportional to the resonant frequency of the oscillatory system is applied to the X-plates, so that the beam traces on the screen a line having a sharply defined position and a height depending upon the conductivity and dielectric loss of the sample. The position of the line along the X-axis depends mainly upon the magnetic permeability and specific inductive capacity of the sample under test. In another modification, Fig. 5 (not shown), the oscillatory system consists of an inductance coil connected at its ends to two cylinders. In a further modification, Fig. 7 (not shown), the inductance coil and the condenser electrodes are immersed into a liquid which is to be tested.

29. 发明专利

GB595088A Improvements in or relating to luminous signs 未知
公开(公告)号：GB595088A
公开(公告)日：1947-11-26
申请号：GB925345
申请日：1945-04-13
申请人： ACE ELECTRONICS LTD , LESLIE CLAUDE WELCH , RONALD JOHN COOK
IPC分类号： H03G11/04 , H05B41/24
摘要： 595,088. Signs. ACE ELECTRONICS, Ltd., WELCH, L. C., and COOK, R. J. April 13, 1945, No. 9253. [Classes 3 (i) and 3 (ii)] [Also in Group XL] A sign comprises a luminous discharge tube in the form of a letter or other design to any chosen point in which high-frequency oscillations are applied. The amplitude of the oscillations can be varied so as repeatedly to produce a glow which begins locally and extends along the tube until it fills it with light. The circuit is shown in the Figure, the oscillator valve 4 having a screengrid 12 energised with current from a source 5 through a 3-electrode valve 13. The plate current for the valve 4 passes from the source 5 through an adjustable inductance coil 6. The grid 16 of the valve 13 is connected to a time-base circuit comprising a condenser 17 charged through a resistance 18 and discharged through a thyratron 19. The outer terminal of the condenser 17 may be earthed or connected to a current source of adjustable negative potential. A resistance 21 may be provided to limit the grid current of valve 13. When the condenser 17 is discharged, the potential of grid 16 falls to a low value so that the space-current of valve 13 is reduced to zero. The space-current of valve 13 is then supplied entirely through the resistance 21, and the output of the valve 4 is thus reduced so that the glow produced is confined to the region of the terminal. The current through the resistance 18 now charges the condenser 17 so that the potential of the valve 13 increases at a rate determined by the time-constant of the condenser 17 and resistance 18, and this causes a corresponding increase in the potential of the grid 12 so that the plate current of valve 4 increases progressively. When the potential of the grid 16 reaches a predetermined value the thyratron 19 fires, so that the condenser 17 is again discharged, and the tube glow disappears. The resistance 20 enables the tube to start glowing slowly from zero position, instead of suddenly striking some inches of gas and proceeding slowly therefrom. By adjusting the potential of the negative current source, the duration of the off-period at the end of each cycle can be varied. The discharge may be arranged to take place when the glow just fills the tube, or later, or earlier. When later, the glow may increase in intensity after the tube is filled. Alternate light and dark regions may be produced in the glow by adjusting the resistance 11.

30. 发明专利

GB591968A Improvements in or relating to two-way radio communication systems 未知
公开(公告)号：GB591968A
公开(公告)日：1947-09-03
申请号：GB843145
申请日：1945-04-05
申请人： ACE ELECTRONICS LTD , LESLIE CLAUDE WELCH , RONALD JOHN COOK
IPC分类号： H04B1/56
摘要： 591,968. Duplex radio signalling. ACE ELECTRONICS, Ltd., WELCH, L. C., and COOK, R..J. (April 5, 1945, No. 8431. [Class 40 (v)] In a two-way radio communication system, the terminal stations transmit signal energy in pulses of a repetition frequency intermediate between the carrier and signal modulation frequencies, the stations being synchronized so that each transmits during the intervals between the pulses transmitted by the other station. The transmitting valve 1 at each terminal station is modulated on the outer grid 25a by signals from the transformer 24a, and derives an R.F. excitation from the driver stage 4. The output from the valve 4 is controlled by applying to the grid 6 square-topped impulses derived from the single-stroke multivibrator 7 over the shaping valve 8. Signals from the remote station are demodulated in the receiver 9 and applied over the pulse demodulator 25b to the reproducer 11. In addition, they are applied over the connection 13 to a limiter 15. The square-top wave of pulse repetition frequency thus produced is differentiated by the circuit 16, 17 and applied to the rectifier 18 to suppress the impulses produced by the leading edges of the arriving pulses. Impulses corresponding to the trailing edges are transmitted to the grid 20 of the multivibrator 7, which is thus triggered to energize the transmitter 1, upon cessation of the received signal pulse from the remote station. In addition, during transmission, an impulse is transmitted over the line 24b to mute the receiver 9. Operation of the system is initiated by an auxiliary free-running multivibrator 22 at each station, which applies low-frequency pulses to the valve 4. Initially, both stations transmit energy in a series of unsynchronized L.F. pulses. When cessation of a pulse from the remote transmitter occurs during a quiescent period of the transmitter 1, the multivibrator 7 is triggered and synchronized operation commences. The rectifier.24 then rapidly builds up a paralysing bias across the resistance 25, which is applied to the grid 23 to disable the multivibrator 22. To maintain proper operation of the system, the valve 1 is so biassed that the signal modulation never reduces the transmitted' pulses to zero. It is stated that since the repetition frequency of the pulses depends upon the'distance between the stations, the system can be used to provide a measure of that distance.

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