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71. 发明专利

GB1132473A Variable ratio friction transmission and control system therefor 未知
公开(公告)号：GB1132473A
公开(公告)日：1968-11-06
申请号：GB4845665
申请日：1965-11-15
申请人： JAMES ROBERT YOUNG
IPC分类号： F16H15/28 , F16H61/662
摘要： 1,132,473. Variable-speed friction gear and control; gearing for stopping and starting machinery. J. R. YOUNG. 15 Nov., 1965, No. 48456/65. Headings F2D and F2L. in a continuously variable friction gear, particularly for an automotive vehicle, driving and driven discs 30, 32, respectively rotatable about the axis of, and secured to, shafts 28, 34, have mutually facing surfaces frictionally engageable with substantially point contact 96, and the distances from the centres of the disc surfaces to the cantact point are both variable throughout ranges at least equal to major portions of the respective radii of the discs. Gear arrangement. - The driving disc 30, serving as the flywheel of a driving engine 26 and preferably provided with starter teeth, has a spherical engagement surface of large radius. The engagement of surface of the driven disc 30 may be plane as shown, or, where the relative angularity of the shafts 28, 34 is maintained nearly or exactly constant, may comprise a central plane portion surrounded by an annular surface revolution generated by an arc (Fig. 15, not shown). The discs 30, 32 are preferably metallic and their engagement surfaces are unyielding, being metallic or ceramic. The shafts 28, 34 are respectively rotatably mounted in an outer housing 22 and an inner housing 24 movably mounted therein. Below and parallel to the shaft 34 an output shaft 36 is rotatably mounted in the inner housing 24 and projects rearwardly from the outer housing 22 through a flexible seal 38 between the two housings. The output shaft 36 is connected to the rear road wheels through a universal joint, a telescopic propeller shaft and the usual differential, and is located where relative movement of the two housings axially of the output shaft 36 is at a minimum. An engageable and disengageable driving connection between the shafts 34, 36 comprises stepped planets 66, 68 respectively meshing a sun 56 fast with the shaft 34 and a sun 58 geared at 60, 62 (if required, through an idler) to the output shaft 36. The steps of each planet have only slightly different pitch diameters and either one may be the larger. The planet carrier 64 drives an eccentric gear pump 40, the output of which is (1) progressively throttled to restrain the carrier and thereby provide a drive to the output shaft, and (2) provides an output torque responsive fluid pressure used for a disc traction pressure loading as described below. To provide for torque reversals, the pump is provided with suitable check valves. The disc traction pressure or loading means comprises tiltable cam members 84 between races 78, 80 urged together by springs 82 and respectively fixed to the inner housing 24 and acting axially on the shaft 34 through ball-bearings 86. The race 80 has teeth meshing a rack 88 which is moved to rotate, and hence axially move, the race 80, and load the discs, by fluid pressure acting on a Loader Actuator 44 connected to the rack. The inner housing 24 may be so moved as to move the disc contact point 96 through Reduced Reverse range and Reduced, Direct and Overdrive Forward range positions. For Reverse range the contact point 96 is between the centres of the driving and driven disc centres whilst for Forward range the surface centres are on the same side of the contact point, the latter lying substantially on a line extending through said centres. Between the Forward and Reverse ranges there is a non-driving position which is referred to as the "Re-Zero" range, and in this position, in the immediate vicinity of the centre of the driving disc, the discs are disengaged, as described below, to prevent overheating. For guidance in its movement, the inner housing 24 has three follower rollers 50 engaging three track grooves 48. The inner housing 24 is movable for ratio change by a gear (112) meshing teeth 110 on said housing. The Specification includes details (Fig. 9, not shown) of means by which the track grooves 48 and the teeth 110 may be cutter-generated to meet the desired relationship of the distances from the disc surface centres to the point of contact throughout the movement of the inner housing. A power take-off 54 comprising a telescopic shaft and universal joints connects the output shaft 36 to the exterior of the outer housing and may drive a combined speedometer and odometer and an output pump 190 for the control system described below. Whilst the inner housing 24 and the control system both use the same fluid having good lubricating qualities, the space between the inner and outer housings contains a low lubricity coolant fluid to achieve a high coefficient of friction between the discs. CONTROL. Summary of main functions.-The control of the gear is combined with that of the engine carburetter throttle (210) so as to adjust the gear ratio so as to permit the engine to be operated at the most economical speed at which it will develop the power desired by the operator and is also combined with that of the conventional hydraulic braking system (338) so as to downshift the gear at such a rate as to produce a vehicle retarding effect in proportion to the rate the operator desires to resist the vehicle motion. Between zero output power and a fraction of the engine maximum power output, the engine speed increases somewhat above its idling speed depending upon the specific engine design while the throttle changes from the minimum opening to full opening. Between the above-mentioned fraction of maximum power and the maximum power, the throttle opening remains at its full position while the power developed increases in proportion to engine speed. The throttle opening is automatically reduced when engine speed exceeds a limit. Means are provided for engine starting by pushing or towing the vehicle or by permitting down-hill vehicle motion. Until the engine commences normal power development a vehicle control pedal (260) may influence the gear ratio to modify starting. In the changeover from Forward to Reverse range and vice versa the discs are automatically separated in the "Rezero" range. Other functions are mentioned below in connection with the control system components. Operator's control inputs include:-The vehicle control pedal (260) actuating a Power Selector Cam (264) and, through a Linkage Telescoper (258), the Carburetter Throttle (210); the pedal being fully released for Deceleration and depressed slightly to a point offering a sharp increase in resistance to pedal movement to commence its Drive movement the first part of which opens up the Throttle; a Neutral- Forward-Reverse Drive Selector Lever (186); an Electrical Starter Switch; a Brake Pedal for the conventional hydraulic braking system (338); and a Push Start Lever (398). Control system components: Engine Driven Pump (160): piston, gear, vane or roller, positive, fixed displacement pump driven in direct proportion to engine speed. Output Driven Pump (190): positive, fixed displacement pump driven by the power takeoff 54. Engine-Speed-Variable Orifice (162): provides a pressure drop increasing with flow but at a rate less than that with a fixed orifice, and on excessive engine speed directs flow to an Engine Throttle Decreaser (164). Vehicle-Speed- Variable Orifice (394): pressure drop as orifice 162, and on excessive vehicle speed directs flow to the Engine Throttle Decreaser (164). Shift-Lock-and-Starter Interrupter (176): responsive to both engine and output speed pressures to lock the Drive Selector Lever (186) and break the starter circuit. To allow shifting at higher speeds when the temperature is unusually low, an engine temperature responsive mechanism may be included. Slip Pump Throttle (192): responsive to engine speed pressure to control Slip Pump flow, the Throttle gradually closing to establish drive through the gear on increase in engine speed, and to a signal from a Push Start Shift-up switch valve (202). Excess Torque Switch Valve (204): responsive to Slip Pump pressure to direct the latter to the Engine Throttle Decreaser (164). Engine Throttle Decreaser (164): reduces engine power to protect against excessive engine speed, vehicle speed and torque, and damps throttle movement. Neutral Switch Pressure Regulator (220): spring-biased to regulate engine speed pressure for supply to a Drive-Decelerate Switch Valve (226), and shifted in Neutral by the Drive Selector Lever (186) to exhaust both the engine pump flow and a traction pressure Pre-Load line (320). Position -Proportional Pressure Generator (240): in forward drive modifies Slip Pump pressure as a function of the contact radius of the driven disc 32 by shifting a helically grooved piston as a function of the position of the inner housing 24; in Reverse drive provides unmodified Slip Pump pressure. Loader Pressure Regulator (254): regulates Slip Pump pressure in response to pressure from the Position-Proportional Pressure Generator (240) for supply to the Loader Actuator 44, and blocks Slip Pump pressure and exhausts said supply to the Loader Actuator in Neutral. Loader Actuator 44: a double piston means responsive to both the Pre-Load pressure in the line (320) for initial disc driving contact for minimum tractive effort, and to pressure from the Loader Pressure Regulator (254) for torque responsive traction pressure. Drive-Decelerate Switch Valve (226): responsive to the position of the Power Selector Cam (264) to switch pressure from the regulator (220) between (a) a Deceleration-Downshift-Rate selector (312) and, through a check valve 314, the Pre-Load side of the Loader Actuator 44, and (b) a Ratio Change Determiner (316) and said Pre-Load side. In the "Re-zero" range, pressure in an override line from a Ratio Range Switch Valve (304) blocks flow from the regulator (220) and Pre-Load pressure is exhausted. Power Selector Cam (264): provides a mechanical position signal, as a function of the engine power desired, to the Ratio Change Determiner (316) and

72. 发明专利

GB903107A Frequency modulation receiver 未知
公开(公告)号：GB903107A
公开(公告)日：1962-08-09
申请号：GB4412659
申请日：1959-12-29
申请人： JAMES ROBERT DAY
IPC分类号： H03C3/06 , H03G5/24 , H03G5/26
摘要： 903,107. Automatic selectivity control; muting. DAY, J. R. Dec. 29, 1959, No. 44126/59. Class 40 (5). In a frequency modulation receiver the normally wide I.F. bandwidth is automatically reduced whenever the signal to noise ratio falls to an unsatisfactorily low level. The normal wideband I.F. channel comprises wideband filter 14, limiting amplifier 16, detector 18 and cathode-follower output stage T1 feeding into load R4. A narrow-band channel, comprising narrow-band filter 26, limiting amplifier 28, detector 30 and cathode-follower output stage T2 also feeding into load R4 is branched-off after filter 14. Noise lying outside the useful signal frequency range is selected from the output of detector 18 by band-pass filter 22, is rectified by rectifier V1 and is applied over resistor R1 to the grid of valve T1 as a D.C. bias which cuts-off the valve when the signal to noise ratio becomes poor. The valve T2 is so biased via potentiometer 34 as to become conductive when the current through the common load resistor R4 from valve T1 ceases. The narrow-band filter 26 may be of automatically variable bandwidth controlled by the voltage across resistor R3 (Fig. 2, not shown); in the extreme case it may cut off and produce muting at low signal levels. The arrangement may be used in a diversity receiver, the outputs from a number of receivers such as that described being combined in a combiner element 40, to which the output of rectifier V1 is also fed via lead 41. The Specification also describes a modification (Fig. 3, not shown), in which the channel control valves T1, T2 comprise pentodes working at intermediate frequency, immediately subsequent to the band filters, followed by a common limiting amplifier and detector. Specification 792,124 is referred to.

73. 发明专利

GB892229A Linear dimension measuring instruments 未知
公开(公告)号：GB892229A
公开(公告)日：1962-03-21
申请号：GB1890058
申请日：1958-06-13
申请人： JAMES ROBERT SIMPSON
IPC分类号： G01B3/02
摘要： 892,229. Sliding-jaw gauges. SIMPSON, J. R. June 5, 1959 [June 13, 1958], No. 18900/58. Class 106 (2). A linear - dimension gauge comprises a main guide-bar 1 having projections 4 at regular intervals, a main slide 6 disposed on the guide-bar 1 with means 5 for engaging the projections, a cross-slide 9 with an inclined edge disposed upon the main slide 6 and a scale 13 attached to the bar 1 tc register with graduations on the cross-slide 9. The slide 9 is urged to the left against a stop 14 by a spring (not shown), and a further slide 10, with an edge mating with the inclined edge of the slide 9, is urged downwards by a second spring (also not shown) against the cross-slide 9. In use, an object to be measured is inserted between the slide 10 and a member 2 attached to the guidebar 1. The cross-slide 9 is then retracted, and the main slide 6 adjusted, by means of the member 5 mating with the projections 4, as close to the workpiece as possible. The crossslide 9 is then released and a measurement can be taken by use of the scale on the member 9 and a vernier on the member 10. The projections 4 may be in the form of teeth engaging a rack 5 as shown. Alternatively, a screw thread engaged by a split-nut or a set of balls or rollers engaged by suitably shaped members may be used. The apparatus may also be embodied in height or depth gauges.

74. 发明专利

CA595061A VACUUM SEALING MACHINE 未知
公开(公告)号：CA595061A
公开(公告)日：1960-03-29
申请号：CA595061D
申请人： JAMES ROBERT C
发明人： JAMES ROBERT C

75. 发明专利

GB807642A Improvements in or relating to the control of electric motors 未知
公开(公告)号：GB807642A
公开(公告)日：1959-01-21
申请号：GB760254
申请日：1954-03-16
申请人： ALLEN WEST & CO LTD , JAMES ROBERT STACEY
IPC分类号： B66C13/26
摘要： 807,642. Control of A.C. motors. WEST & CO. Ltd., and STACEY, J.R. June 8, 1955 [March 16, 1954], No. 7602/54. Class 38 (3). A hoist is driven by a slipring induction motor M having a control drum D with a setting for driving the load in the lowering direction and other positions in which dynamic braking circuits for controlling the descent of the load are established. An electro-mechanical brake Bw is adapted to be applied a time interval after the drum has been moved from one setting to the other if the power or braking circuits should fail to be operative. A relay VR1w is energized when the power circuit L1, L2, L3 for the motor is operative, a relay CRw being effective if the dynamic braking circuit is closed, and these relays have respective contacts VR1C2, CRC2 in series with a contactor coil IVw controlling the brake Bw. Thus, when the controller is moved from one setting to the other, one of the relays VR1w, CRw will fall out before the other is pulled in thereby interrupting the normal energization circuit of the contactor IVw which is maintained energized, however, to hold off the brake for a period determined by the rate of discharge of a capacitor C2. Normally, when the controller is returned from a power lowering notch to the " off position, the circuit of winding IVw is opened at contact 12, the power contactor II is opened and simultaneously the contactor III is closed, thereby applying direct-current braking with the first section only of the rotor resistance short-circuited by closure of contactor V. When the speed has fallen to a predetermined value (as detected by the holding coil VR2W2 of a rotor current or voltage-responsive relay) contactor VI closes to remove another section of rotor resistance. A further fall of speed is detected by relay coil VR3W2 to close contactor VII. As soon as this contactor closes, a second circuit is established across capacitor C2 through contact VIIC3, thus expediting the application of the electro-mechanical brake. The dynamic braking circuit is maintained for a given time interval after the application of brake Bw, this interval being dependent upon the dropping out of a relay the coil 1R1w of which is shunted by capacitor Cl. Whilst the electro-mechanical brake is not normally applied until the motor speed has been reduced, if the direct braking current should fail, the application of the brake will still be effective after a short delay, when the capacitor C2 has finished discharging. During the early part of the return movement of the controller, contactor XI is closed to increase the direct braking current. When the controller is moved quikly from the lowering side to the hoisting side for plugging, a short delay elapses while the relay coil 1R1w) is maintained energized by capacitor C1 before contactors VI-X are closed to remove resistance from the rotor circuit of the motor, so preventing excessive torque and current during the plugging operation. In a modification counter-current braking operation replaces the direct-current braking operation referred to previously. The sequential removal of rotor resistance is controlled in some positions of the control drum by a timing relay TR comprising upper and lower rows of contacts and a bar TRB which is driven by a pilot motor (not shown) so as alternatively, at timed intervals, to bridge the upper and lower rows of contacts. The pilot motor is effective when one of the power contactors I, II is closed. Specification 807,641 is referred to.

76. 发明专利

GB793075A Fishing float 未知
公开(公告)号：GB793075A
公开(公告)日：1958-04-09
申请号：GB3490555
申请日：1955-12-06
申请人： JAMES ROBERT THORNHILL
IPC分类号： A01K93/00
摘要： 793,075. Fishing net floats. THORNHILL, J. R. Dec. 6, 1955 [Dec. 13, 1954], No. 34905/55. Class 48. A plastic fishing float assembly comprises a pair of moulded cups 7 of similar size and shape each having a cylindrical side wall and an apertured end wall 9, an integral central tube 11 having its bore merging into the aperture 12 in the end wall and extending to the mouth of the cup, a separate circular reinforcing member 15 including a circumferential rim 16 engageable in the mouths of the cups and means on the central portion of the member 15 providing an interfitting connection with the tubes 11 when the cups are assembled in mouth-to-mouth relation with the member 15 fitted therein, the assembly being permanently secured by cement. The cylindrical side wall of each cup tapers slightly toward the end wall 9. The member 15 is a centrally apertured disc having flanges at its outer edge to fit snugly in the mouths of the cups and having annular flanges 17 at its inner edge to fit snugly over the ends of the tubes 11. The float is reinforced by radial webs 18 extending between the tubes 11 and the cups.

77. 发明专利

GB792124A Diversity receiving system 未知
公开(公告)号：GB792124A
公开(公告)日：1958-03-19
申请号：GB3385055
申请日：1955-11-25
申请人： JAMES ROBERT DAY
IPC分类号： H04B7/08
摘要： 792,124. Radio receiving systems. DAY, J. R. Nov. 25, 1955 [June 24, 1955], No. 33850/55. Class 40 (5). In a diversity receiving system for frequency modulated signals, a noise channel connected to the output of each receiver selects only noise components lying outside the intelligence band and applies them after rectification as a bias to a signal combining circuit so as to vary in the combining circuit the magnitude of the output from each receiver inversely in accordance with the magnitude of the noise components. Noise signals N1, N2 in the output of receivers 1 and 2, the amplitude of which varies inversely with the amplitude of the received signals are selected by high-pass filters 12, 22 cutting off at, say, 300 kc/s. and amplified at 13 and 23 to provide across resistors 14, 24 bias for combining tubes T1, T2 to which outputs S1+N1 and S2+N2 are respectively applied. The intelligence signals which are in phase are combined additively in the common anode or cathode load whilst the noise signals, the strongest of which is amplified the least and because they are uncorrelated are additive only as the root of the sum of the squares are each reduced, by the load of the other combining stage, i.e. A tube TM which is normally cut-off by the potential across resistor 49 in the common anode circuit of muting control tubes TM1, TM2 is provided to cut off tubes T1, T2, through the common cathode resistor 35, if, due to the signal falling below a predetermined level, the output is mainly noise. The tubes TM1, TM2 are also controlled by the bias across resistors 14, 24.

78. 发明专利

DE1006022B 未知
公开(公告)号：DE1006022B
公开(公告)日：1957-04-11
申请号：DED0019578
申请日：1955-01-17
申请人： JAMES ROBERT DAY
发明人： DAY JAMES ROBERT
IPC分类号： H03G11/06

79. 发明专利

GB762726A Frequency modulation receivers, particularly for multiplex reception 未知
公开(公告)号：GB762726A
公开(公告)日：1956-12-05
申请号：GB3085454
申请日：1954-10-26
申请人： JAMES ROBERT DAY
IPC分类号： H04J1/20
摘要： 762,726. Multiplex signalling; frequency modulation. DAY, J. R. Oct. 26, 1954 [Jan. 21, 1954], No. 30854/54. Class 40(5) A multiplex frequency modulation receiver for receiving without crosstalk a carrier frequency modulated by a signal and one or more modulated subcarriers comprises (1) a selective portion operating in a range of signal input such that valve input admittances remain substantially constant (2) a plurality of non-linear amplitude range compressor stages of broad bandwidth compared with that of the selective portion, each becoming overloaded (3) a symmetrical amplitude limiter. The compressor stages may be a grounded grid triode 31 (Fig. 7) of low anode voltage, or a pentode with control grid input. In each case the output or input may further be shunted by an asymmetric conductor 41a or a pair of oppositely oriented conductors. The symmetrical limiter may be an interstage biased pair of series connected oneway conductors 42, 43 whose junction at mean potential - E/2 stabilized by high resistances 44, 45 cannot vary above earth or below -E voltage. The selective stages may include an inter-stage pair of damped resonant circuits 74-76 and 78-80 coupled by a capacitor 81 to provide just sufficient bandwidth and with a step-down capacitative voltage divider 78-79 to the input of the following stage so that variations in valve input admitance accompanying autogain control produce a correspondingly reduced effect on the tuning of the resonant circuits, and less distortion. Or a stepdown transformer may replace the voltage divider 78, 79. Specification 757,776 is referred to.

80. 发明专利

GB743511A Improvements in or relating to the control of polyphase alternating current motors 未知
公开(公告)号：GB743511A
公开(公告)日：1956-01-18
申请号：GB2438153
申请日：1953-09-03
申请人： ALLEN WEST & CO LTD , JAMES ROBERT STACEY
IPC分类号： B66B1/06
摘要： 743,511. Automatic speed control systems. WEST & CO., Ltd., A., and STACEY..J. R. Aug. 25, 1954 [Sept. 3, 1953], No. 24381/53. Class 38 (4). [Also in Group XXXVII] A. slip-ring induction motor M for driving a hoist is braked by the application of directcurrent to its primary winding, such current being derived from an exciter EX having a field winding EXF. The rotor resistance R of the induction motor is regulated by means of a control lever L, and means are provided for varying the voltage of the injected directcurrent both as a function of the motor speed and also as a function of the secondary resistance so that, for any setting of the control lever, the motor speed tends to be stabilized at a corresponding value notwithstanding variations of the load driving the motor. For this purpose, the motor is coupled to a tachometer generator TCH supplying a number of relay windings Wl-W5 in series with a resistor r2 the value of which is varied according to the position of the lever L. Contacts Cl-C5 are operated at different current values by their windings Wl-Wo so that they close or open progressively according as the speed of the tachometer generator increases or decreases. These contacts are adapted, on closing, to cut out, in sequence, sections of a resistance r in series with the exciter field winding EXF. If, at any given setting of the lever L, the speed of the motor M becomes greater, for example, the voltage of the tachometer generator increases and one or more additional relay-contacts C1- C5 will close. The field excitation of the exciter EX is thus strengthened and the voltage output of the machine is raised whereby the braking effort of the main motor is increased, so stabilizing the speed of the motor. When the control lever is moved to a higher setting, the increased value of the resistance R tends to raise the motor speed, and, at the same time, the increase of the value of the resistor r2 permits such a higher speed to be attained. A relay winding w6 controls contact C6 connected across resistor r3 in series with field winding TCHw of the tachometer generator. If the control lever is moved rapidly to a low speed position while the motor is running at high speed, the contacts C6 open and reduce the voltage of the tachometer generator and so limit the current passing through relay windings Wl-WO to a safe value. The operation of the resistance R in response to the actuation of the lever L may be delayed slightly so that the variation of resistor r2 takes place in advance of that of the motor secondary resistance. When the lever L is in the minimum speed position, contacts k1 k2 are connected to short circuit substantially the whole of the resistance r. The exciter EX may be replaced by a selenium or mercury arc rectifier. The lever L is coupled to a drum controller governing the operation of interlocked contactors for power hoisting and lowering. The movement of the lever through a slotted gate actuates a change-over switch for establishing the dynamic braking connections.

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