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61. 发明专利

GB1097039A Improvements in or relating to mineral insulated cables 未知
公开(公告)号：GB1097039A
公开(公告)日：1967-12-29
申请号：GB4918263
申请日：1963-12-12
申请人： PLESSEY UK LTD
发明人： HUFFADINE JOHN BERTRAM , ELMS WILLIAM ALAN
IPC分类号： H01B7/16
摘要： 1,097,039. Mineral insulated cables. PLESSEY-U.K. Ltd. Dec. 7, 1964 [Dec. 12, 1963], No. 49182/63. Heading H1A. A cable insulated with magnesia contains titanium which on heating combines chemically with carbon dioxide and reacts with water vapour which lowers the insulation resistance of the cable. Hydrogen is also liberated to produce a reducing atmosphere which increases the resistivity of the insulant. The titanium may form a centre core of a cable with a stainless steel sheath although more than one titanium core may be used. The use of vanadium, zirconium and niobium instead of titanium is mentioned.

62. 发明专利

GB1091014A Improvements in or relating to end connections for helically convoluted tubing 未知
公开(公告)号：GB1091014A
公开(公告)日：1967-11-15
申请号：GB2152063
申请日：1963-05-29
申请人： PLESSEY UK LTD
发明人： SHEFFIELD KENNETH JOHN WILLIAM
IPC分类号： F16L33/26
摘要： .1,091,014. Welding by fusion. PLESSEYUK Ltd. Aug. 6, 1964 [May 29, 1963], No. 21520/63. Heading B3R. [Also in Division F2] A method of attaching an end of helically convoluted tubing to a cylindrical sleeve element comprises trimming the last convolution of the tubing along a helical line of constant radius at the outer side of the deepest depression of the convolution to provide a helical ridge, extending over one turn of the convolution, and weld connecting the sleeve to the tubing along this helical ridge. The sleeve may be inserted into the end of the convoluted tubing beyond the trimming line, or may be butt-welded to the tubing, wherein the end of the sleeve is trimmed to a helical shape complementary to the shape of the trimmed tubing. The tubing may have a reinforcing braid sheath around it which is anchored to the sleeve.

63. 发明专利

CA771362A LIQUID-FUEL SUPPLY SYSTEMS 未知
公开(公告)号：CA771362A
公开(公告)日：1967-11-14
申请号：CA771362D
申请人： PLESSEY UK LTD
发明人： WOOD ROBERT S

64. 发明专利

GB1089433A Improvements in or relating to mechanical actuators 未知
公开(公告)号：GB1089433A
公开(公告)日：1967-11-01
申请号：GB113964
申请日：1964-01-10
申请人： PLESSEY UK LTD
发明人： OLDFIELD THOMAS ALFRED , TRIBE LEONARD THOMAS
IPC分类号： F02K1/76 , F16H1/28 , F16H48/10 , F16K31/53
摘要： 1,089,433. Toothed gearing. PLESSEYUK Ltd. Jan. 8, 1965 [Jan. 10, 1964], No. 1139/64. Heading F2Q. Epicyclic gearing for the operation of eyelid flaps in thrust reversers for aircraft propulsion jet engines comprises a driving planet-carrier 4, stepped planets 7, 8, 9 meshing respectively an annulus 12, coupled by a sleeve 19 to one eyelid flap, a fixed annulus 11, and an annulus 13 coupled by a sleeve 20 with the other eyelid flap. The planet-carrier 4 is driven through reduction gearing 3 by an air motor 2. The arrangement is such that the sleeves 19, 20 are driven at substantially the same speeds in opposite directions.

65. 发明专利

GB1087299A Improvements in or relating to socket contacts for electrical connectors 未知
公开(公告)号：GB1087299A
公开(公告)日：1967-10-18
申请号：GB4305163
申请日：1963-10-31
申请人： PLESSEY UK LTD
发明人： DUNCAN WILLIAM CHAMBERS WILSON
IPC分类号： H01R13/11 , H01R13/115 , H01R13/64
摘要： 1,087,299. Two-part couplings. PLESSEY UK Ltd. Oct. 9, 1964 [Oct. 31, 1963], No. 43051/63. Heading H2E. A socket contact comprises an inner portion 2 and an outer sleeve 3, the inner portion being of resilient conductive material and having a bore of inner diameter such that it forms a sliding fit with pin 5, the axes of the inner portion and bush being inclined at a slight angle so that the bore at the free end of the inner portion is laterally offset from the bore of a projecting portion 4 of the sleeve by an amount which is less than the radial play of the free end of the inner portion within the sleeve. Both the inner portion and the sleeve have a lead-in taper 8 and 7 respectively at their ends which receive pin 5. The inclination of the inner portion within the sleeve may originate, Fig. 2, (not shown), at a section of the root of the inner portion which is of reduced diameter.

66. 发明专利

GB1086383A Improvements in or relating to fuel-flow control devices 未知
公开(公告)号：GB1086383A
公开(公告)日：1967-10-11
申请号：GB2263463
申请日：1963-06-06
申请人： PLESSEY UK LTD
发明人： WHITEHEAD JOHN PARKIN
IPC分类号： F02C7/22 , F15B9/08
摘要： 1,086,383. Fluid pressure servomotor systems. PLESSEY UK. Ltd. May 26, 1964 [June 6, 1963], No.22634/63. Heading G3P. [Also in Division F1] A valve 6 controlling the supply of fuel from a pump 2, driven by the turbine, to the burners 12 has two lands 7, 8 which co-operate with ports 9 and 10, the port 9 leading to the burners and the port 10 leading to a drain passage 16 through a valve 15. The valve 6 carries a differential piston 18 subjected on its smaller side to the fuel pressure from the pump 2 and subjected on its larger side to a pressure controlled by a pilot valve 22. The pilot valve controls the connection of a passage 30 to a supply port 24 and an exhaust port 26 and is moved by a signal supplied to an electric motor 32. A spring 33 between the valve 6 and the pilot valve 22 provides a feedback. The pilot valve may also be moved by a pressure P, acting on a lever 37 and this pressure may be ambient pressure or compressor inlet pressure. The valve 14 is loaded by the pressure at the ports 9 and 10 acting in opposite directions, to maintain equal pressures at these ports.

67. 发明专利

GB1085221A Improvements in or relating to apparatus for measuring the mass flow of fluids 未知
公开(公告)号：GB1085221A
公开(公告)日：1967-09-27
申请号：GB2152263
申请日：1963-05-29
申请人： PLESSEY UK LTD
发明人： MATTHEWS ROBERT BARRY
IPC分类号： G01F1/12 , G01F1/80
摘要： 1,085,221. Electro-physical measurement, control, &c. PLESSEY-UK Ltd. May 26, 1964 [May 29, 1963], No.21522/63. Heading G1N. [Also in Division F1] In the mass-flow meter as described and claimed in Specification 1, 027, 291, the angle of the vanes of the stationary deflector device are varied automatically in accordance with the mass-flow of fluid through the meter. As described, the signals representing the rotational speed of the freely rotating speed paddle 2, Fig. 2, and the signals representing the torque reaction of the paddle 8 are fed to computer-input units 13, 14 respectively to represent the digital values of swirl speed and torque. The outputs of these two units are fed to a divider unit 15 which is connected to a display unit 17 to record mass-flow and also to a programming unit 18, which latter determines a speed N, at which the paddle 2 should be run for the mass-flow concerned. This speed signal N 1 together with the actual speed signal N fed to the input unit 13 are fed to an algebraic adder 19, amplified by an amplifier 20 and used to operate an electric motor 21 to rotate a ring 22 in one or other direction to adjust the angle of the vanes 6 of the stationary deflector device. The motor being driven to reduce the blade angle and hence the speed when N is higher than N 1 and increases the blade angle and hence the speed when N is lower than N 1 .

68. 发明专利

GB1081616A Improvements in or relating to switch mechanisms 未知
公开(公告)号：GB1081616A
公开(公告)日：1967-08-31
申请号：GB2180563
申请日：1963-05-31
申请人： PLESSEY UK LTD
发明人： ASHMAN JOHN ROBERT
IPC分类号： G06M3/02 , H01H3/58 , H01H9/16
摘要： 1,081,616. Cam-operated switches. PLESSEYU.K. Ltd. May 14, 1964 [May 31, 1963], No. 21805/63. Heading H2B. A switching device comprising a plurality of switch units includes a shaft 14, manually rotatable to select a switch unit by engaging the corresponding clutch unit 11 on a second shaft 9, which is then manually rotatable to operate the selected switch unit. Each switch unit comprises a drum (2) (Fig. 2, not shown), carrying several cam rings (18), each with a cam riser (19) for moving its associated contact spring (20) into engagement with a common contact (21), a ring gear (7) meshing with a gear 8 loose on shaft 9, and an indicator ring 4 integral with the drum sleeve (3) which is rotatably journalled on a fixed shaft 1. Spring- pressed balls (6), in a bore of the shaft 1, engage recesses (5) in each drum sleeve (3) to index the sleeve, and thus ring 4, relative to the shaft 1. Shaft 14 carries clutch operating discs 15, each having a detent 16 engaging a bracket 13 to push it, against a load spring 17, sufficiently to engage the dogs 10, 12 of the corresponding clutch 11. The indicator rings 4 are seen through windows (24) and illuminated by a lamp (25). Driving dogs 12 are rotatable with but axially slidable on shaft 9, while driven dogs 10 are fast with gears 8 which idle on shaft 9.

69. 发明专利

GB1076632A Improvements in or relating to process control timers 未知
公开(公告)号：GB1076632A
公开(公告)日：1967-07-19
申请号：GB1169864
申请日：1964-03-19
申请人： PLESSEY UK LTD
发明人： REEVES ALBERT GEORGE MICHAEL
IPC分类号： G05B19/07 , H03K5/15 , H03K17/76
摘要： 1,076,632. Timed control of electric circuits. PLESSEY-UK Ltd. Feb. 26, 1965 [March 19, 1964], No. 11698/64. Heading G3T. In a process control timer, clock pulses are fed to a binary counter, B1, B2 . . . Bp, of which the outputs go to pairs of diode AND gates which control bi-stable switches operating electric load switches according to a timed programme. Each AND gate actuates the corresponding switches ON and OFF at pre-set numbers, and at a number determining the end of a cycle the counter resets. For economy of binary stages and inputs per diode gate where a large number of load circuits is required, the counter may be reset for each discrete interval of the cycle. Thus in a modification, Fig. 2 (not shown) the counter provides OFF pulses which cause the bi-stable switch that is ON to switch OFF and in so doing to switch ON a bistable switch that is next in sequence, whilst the counter is reset to zero. A new count actuates the gate of the second bi-stable switch, which is turned OFF and a third one ON, the counter again going to zero. The last switch in going OFF turns the first one ON and the cycle is repeated. An output from each load switch as it comes on resets the counter. False operation of the gates is prevented by a disabler or monostable switch (A) which cuts off supply from all the gates for a finite time which is less than the unit pulse time but greater than the resetting time. A variant system, Fig. 3 (not shown) is used where all dwell times are the same. Bi-stable stages are arranged so that an ON state is passed from one to the next by a pulse on a common shift line. Through OR gates as shown, only the AND gate relating to the one bi-stable switch at ON receives the counter signal. This turns the switch OFF and a second one is turned ON, signalling to the OR gate controlling the AND gate of this second switch to prepare it for the appropriate count which starts simultaneously. On actuation by this count, an OFF signal goes to the second switch and a third switch goes ON. When the last is OFF the cycle repeats. Economy in the number of load switches is effected by another arrangement, Fig. 4 (not shown) wherein N loads L 1 to Lmn are arranged in a cross-point switching matrix. Horizontal scan switches H 1 to H n control vertical switch lines in the matrix, whilst vertical scan switches V 1 to Vm control horizontal switch lines. A resetting circuit (not shown) ensures that one and the same load is always switched on at the start. On switching on from zero, only V 1 and H 1 are ON and only L 1 energized. A suitable output voltage from H provides an input to the column of gates D 1 to D m . The other input to each gate will have been connected to the timing gate which will give each load its required ON time. The diodes in the remaining columns of the matrix will be inhibited. When the end of ON for L 1 is reached a pulse will occur at the output of the timing gate. This will be repeated at the output of D 1 and appear at the input of the bi-stable stage of V 1 . The latter will go OFF and L 1 be de-energized, whilst a pulse will go to the disabler (A) to reset. V 2 will come ON and energize L 2 . The total ON time for the N loads is exactly the sum of the individual ON times. In case the number of loads is not factorizable so that m x n switching points will control only (m x n - l) loads, a modification, Fig. 5 (not shown) enables the last l in any vertical column (say the last one) to be skipped. There are no load connections at these points but at the one directly following the last load a pulse generator circuit is arranged and the isolated output from this point goes to the common shift line of the horizontal scan. When this point goes ON the scan changes from H n to H 1 and the last l cross points are omitted. In a simplified arrangement, Fig. 6 (not shown) the cycle is divisible into regular subcycles. The number of vertical scan switches becomes equal to the number of time intervals in a sub-cycle and the number of horizontal scan switches equals the number of sub-cycles. The appropriate time pulse goes directly to each vertical scan switch and the feedback from each horizontal scan switch is omitted. The counter resets after each sub-cycle. Where frequent changes of time and load pattern are required, a plug board may be inserted between the gates and the diode matrix. Load skipping means may also be provided.

70. 发明专利

GB1075423A Improvements in or relating to self-locking fluid-pressure-actuated piston devices 未知
公开(公告)号：GB1075423A
公开(公告)日：1967-07-12
申请号：GB1344063
申请日：1963-05-04
申请人： PLESSEY UK LTD
发明人： KING HARRY VERNON
IPC分类号： F15B15/26
摘要： 1,075,423. Fluid-pressure apparatus. PLESSEY-UK Ltd. May 1, 1964 [May 4, 1963], No. 13440/63. Heading F1P. Locking of a fluid actuated piston (1) Fig. 1 (not shown) at either end of a cylinder (5) is effected by one or other of two sets of spring claws (14) carried by said cylinder ends engaging shoulders (13) formed in piston recesses (12) and unlocking at the start of a stroke is effected by the action of fluid-pressure on an auxiliary piston (7) which is axially displaced relative to the main piston and thereby allows a cam surface (17) to contract the claws (14); the so displaced auxiliary piston then being in such a position as to allow locking of the main piston when it reaches the end of its stroke.

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