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1. 发明专利

GB766648A Improvements in or relating to electric apparatus of the kind including a thermionic valve 未知
公开(公告)号：GB766648A
公开(公告)日：1957-01-23
申请号：GB3050553
申请日：1953-11-04
申请人： GEN ELECTRIC CO LTD , CECIL WILLIAM MILLIDGE READ , ARTHUR IAN FORBES SIMPSON
IPC分类号： H04B1/16
摘要： 766,648. Valve circuits. GENERAL ELECTRIC CO., Ltd., READ, C. W. M., and SIMPSON, A. I. F. Nov. 4, 1954 [Nov. 4, 1953], No. 30505/53. Class 40(6) In electrical apparatus including a thermionic valve, the cathode emission of which varies with variation in heater supply voltage, the operating voltage on one or more electrodes is varied in a compensatory manner. The heater supply is derived from a tapping on the secondary of a supply transformer 11, a compensatory bias being applied to the grid by means of rectifier 18 and smoothing circuit 21, 17. The time-constant of the smoothing circuit is such that the grid bias varies at substantially the same rate as the change in cathode emission due to heater supply variations.

2. 发明专利

GB749016A Improvements in or relating to electric circuit arrangements including band-pass filters 未知
公开(公告)号：GB749016A
公开(公告)日：1956-05-16
申请号：GB2135753
申请日：1953-07-31
申请人： GEN ELECTRIC CO LTD , ARTHUR IAN FORBES SIMPSON
IPC分类号： H03H9/54
摘要： 749,016. Filters. GENERAL ELECTRIC CO., Ltd., and SIMPSON, A. I. F. Aug. 3, 1954 [July 31, 1953], No. 21357/53. Class 40(8). A band-pass circuit arrangement comprises a band-pass filter followed by a parallel tuned circuit which includes some resistance, the passband being varied by varying the proportion of the inductance or capacity of the tuned circuit across which the input signal is applied. The tuned circuit is coupled directly to the band-pass filter (not shown) which may be a piezo-electric filter as described in Specification 679,888. The parallel tuned circuit comprises three condensers 5, 6, 7, an inductor 8 and a resistor 9 which may represent the resistance of the winding of the inductor 8. In the example shown, a three-way switch 11 enables the capacity connected across the output of the crystal filter to be varied. As the band width is increased by introducing extra capacitance, the voltage level of the intermediate signal is reduced and, if the circuit forms part of an amplifier, the gain is reduced. Condensers 15, 16 of values approximately one-tenth the values of the condensers 5, 6, 7 may be switched in by a switch 14 to compensate for the detuning of the parallel-tuned circuit.

3. 发明专利

GB748882A Improvements in or relating to devices for making electrical connections with contacts projecting from electric valves 未知
公开(公告)号：GB748882A
公开(公告)日：1956-05-16
申请号：GB79053
申请日：1953-01-09
申请人： GEN ELECTRIC CO LTD , REGINALD LIONEL RIDDIFORD , ARTHUR IAN FORBES SIMPSON , FRANK SALISBURY
IPC分类号： H01J19/66 , H01R13/53
摘要： 748,882. Holders for thermionic valves. GENERAL ELECTRIC CO., Ltd., RIDDIFORD, R. L., SIMPSON, A. I. F., and SALISBURY, F. Jan. 11, 1954 [Jan. 9, 1953], No. 790/53. Class 38 (1). A connecter.for a top cap 3 of a valve comprises a tubular insulating part 8 projecting through a can 5 and held against the valve envelope by a spring 13 operative between the part 8 and the can. A second insulating part 9 carrying a contact 15 for connection to the top cap fits into the part 8 and is retained therein by a spring 20 carried by the part 8 and having parallel portions which engage grooves in part 9. The latter is removed by rotating it to force the spring out of the grooves whereupon it may be withdrawn. Fig. 2 shows a modification wherein the retaining means comprises a spring 26 carried by the part 9 and having elbow portions 27 which project into recesses 29 in part 8. Removal of the part 9 is effected as in the first embodiment.

4. 发明专利

GB745387A Improvements in or relating to devices for transmitting rotary motion 未知
公开(公告)号：GB745387A
公开(公告)日：1956-02-22
申请号：GB1022653
申请日：1953-04-14
申请人： GEN ELECTRIC CO LTD , ARTHUR IAN FORBES SIMPSON
IPC分类号： G05G7/02
摘要： 745,387. Escapement mechanism; locking rotary elements. GENERAL ELECTRIC CO., Ltd., and SIMPSON, A. I. F. April 2. 1954 [April 14, 1953]. No. 10226/53. Class 80(4) In a step-by-step snap-action device a driven shaft 6 carries a chamfered plate 16 with six indentations 17 engageable in succession by a spring-pressed ball 25 located in fixed guides. A driving shaft 5 carries a plate 31 with six teeth 32, a pin 33 on said plate passing through an arcuate slot 34 in the plate 16. Springs 35, 36 connect the pin 33 to the plate 16. Upon manual rotation of the shaft 5 the shaft 6 remains locked until a tooth 32 has moved the ball 25 out of an indentation 17 whereupon the plate 16 is moved angularly with a snap action by the spring 35 towards its next position wherein the ball 25 engages the adjacent indentation. The peripheral segments of the plate 16 are curved to give the ball 25 a top dead centre position and assist the snap action. The device may be modified to provide any number. of locking positions, and the . spacing thereof need not be regular. The shaft 6 is connected, possibly through a universal coupling, to a rotary frequency-band switch or turret in a radio receiver, and if the connection is through reduction gearing only one locking position may be required for each revolution. Each indentation 17 is tapered-as shown the opposite edges are radial, but they may befurther inclined to one another-and in the locking position the ball 25 has fourpoint contact with these two edges and the edges of two bent-out portions 23 of a fixed plate 1 which form the fixed guides. Alternatively, a channel-shaped member may be secured to the plate 1. In the unlocked condition the ball is retained by a block 21 on a fixed plate 2. As shown, the pin 33 is carried by the plate 31 and the slot 34 is formed in the plate 16, but these positions may be reversed. The shaft 6 may have an end portion fitting into the shaft 5. In a modification the plate 31 may be ratchet-shaped to transmit motion in only one direction, and two such plates, oppositely acting, may be provided and be selected by sliding of a splined driving shaft. A pair of contacts may be operated by the leaf spring 28 which loads the ball 25, or by a spring replacing this spring, to complete an interlocking circuit, or the circuit of the receiver dial lamps, only when the shaft 6 is correctly located. According to the Provisional Specification, the plate 31 may be hexagonal, the sides of the hexagon being preferably concave and the corners rounded, and the block 21 may be replaced by a pressed-out portion of the plate 2.

5. 发明专利

GB874790A Improvements in or relating to loudspeaking telephones 未知
公开(公告)号：GB874790A
公开(公告)日：1961-08-10
申请号：GB3988258
申请日：1958-12-10
申请人： MODERN TELEPHONES GREAT BRITAI , EDGAR IVENS , ARTHUR IAN FORBES SIMPSON
IPC分类号： H04M9/08
摘要： 874,790. Loud-speaking telephone sets. MODERN TELEPHONES (GREAT BRITAIN) Ltd., IVENS, E., and SIMPSON, A. I. F. Dec. 7, 1959 [Dec. 10, 1958], No. 39882/58. Class 40 (4). In a loud-speaking telephone arrangement, a loud-speaker is placed inside and at one end of the front face of a cabinet 10 (Fig. 1) and a microphone 26 (Fig. 4) is placed outside the other end face of the cabinet at a position where the highfrequency sounds are masked and where there is a minimum intensity for low-frequency sounds due to the cancelling effect of the sounds travelling along different paths, this arrangement minimizing singing. The loud-speaker may be placed behind a dial assembly 11 (Fig. 1) and inside the cabinet 10, which has an opening at the back, equivalent in area to the openings at the front, so that air column resonance is reduced and the said cancelling effect enhanced. The cabinet may also have provision for a key 12 and indicator 13 board. The microphone housing 22 (Fig. 4) has a grille 25 as its front face behind which is a crystal microphone 26, placed inside an aperture in a sponge rubber sheet 27, sandwiched between two further sheets 28, 29. The microphone leads to the cabinet are run through suitable channels in the rubber sheets above the microphone, thus further minimizing acoustic coupling. A telephone handset (Fig. 2, not shown) may rest on a cradle attached to member 19 (Fig. 4) which can operate push rod 23, connected by a link 24 to a switch mechanism in the cabinet. The cabinet may also house an amplifier.

6. 发明专利

GB756180A Improvements in or relating to apparatus for suppressing ripple on direct current electric supplies 未知
公开(公告)号：GB756180A
公开(公告)日：1956-08-29
申请号：GB28254
申请日：1954-01-05
申请人： GEN ELECTRIC CO LTD , ARTHUR IAN FORBES SIMPSON
IPC分类号： H02M1/15
摘要： 756,180. Smoothing direct current. GENERAL ELECTRIC CO., Ltd., and SIMPSON, A. I. F. Dec. 31, 1954 [Jan. 5, 1954], No. 282/54. Class 38 (2). A circuit for suppressing ripple in line supplying D.C. from terminals 1, 2 to terminals 3, 4 comprises a valve 6 connected across the output terminals with a resistor 5 between the anode and the positive input terminal 1, and a resistor 10 in the cathode circuit, the grid being fed from the junction of a capacitor 17 and resistor 14 connected in series between the negative input terminal 2 and the junction of resistor 15 and capacitor 16 connected across resistor 5. Suitable values for the components are stated for removing the fundamental ripple component from the output of a fullwave rectifier supplied with A.C. of 50~.

7. 发明专利

GB712826A Improvements in or relating to gas-cooled electrical apparatus 未知
公开(公告)号：GB712826A
公开(公告)日：1954-08-04
申请号：GB153151
申请日：1951-01-19
申请人： GEN ELECTRIC CO LTD , WILLIAM HENRY LEWIS HEWITT , ARTHUR IAN FORBES SIMPSON
IPC分类号： H04B1/03 , H05K7/20
摘要： 712,826. Radio transmitting apparatus. GENERAL ELECTRIC CO., Ltd., HEWITT, W. H. L., and SIMPSON, A. I. F. Jan. 21, 1952 [Jan. 19, 1951], No. 1531/51. Class 40 (5). [Also in Group XXXV] A combined power unit and radio transmitter mounted on a common chassis is housed in an elongated sealed casing (not shown in Fig. 5) divided by a transverse partition 6 on the chassis into two parts containing the radio equipment and power unit respectively, and an impeller causes gas, e.g. air, to circulate in a closed circuit through an aperture in the partition, over the components in the power unit, and then to return to the other compartment by passing along adjacent the outer wall of the casing. To this end gaps 26, 27 may be provided at each edge of the partition and permit air from the power compartment to pass along between the outer surface of a shroud 46 surrounding the radio compartment and the inner surface of the casing to the far end of the latter from where it returns through the partition aperture 25 and a dynamoelectric machine, e.g. rotary transformer 31, driving the gas impeller 32. High wattage components are positioned close to the intake and outflow of the impeller, and deflectors and screens on the chassis direct a suitable proportion of air to each component and sub-compartment. The shroud 46 consists of a rectangular cover with sides spaced from the inner surface of the casing to form air channels, and supporting ribs 47 along each edge. Holes in the shroud covered by rubber plugs permit access to components in the compartment. The inner and outer surfaces of the casing and shroud may be given a matt black finish to increase radiation of heat. The air or other gas in the casing may be applied under pressure through a valve in the front panel of the chassis. Forced air or water cooling may also be applied externally to the casing. Specification 712,825 is referred to.

8. 发明专利

GB712825A Improvements in or relating to apparatus housings 未知
公开(公告)号：GB712825A
公开(公告)日：1954-08-04
申请号：GB153051
申请日：1951-01-19
申请人： GEN ELECTRIC CO LTD , WILLIAM HENRY LEWIS HEWITT , ARTHUR IAN FORBES SIMPSON
IPC分类号： H04B1/034 , H05K5/06
摘要： 712,825. Radio transmitting apparatus. GENERAL ELECTRIC CO., Ltd., HEWITT, W. H. L., and SIMPSON, A. I. F. Jan. 21, 1952 [Jan. 19, 1951], No. 1530/51. Class 40 (5). [Also in Group XVII] A metal housing for an aircraft radio transmitter is constructed so that it can be sealed and a plurality of hoops or rings 10 are provided embracing and making continuous contact with the housing so as to minimize any tendency for the housing to expand when the pressure outside is less than that inside. In the example shown the housing is in the form of an elongated rectangular box closed at one end by an end plate 3 welded on and at the other by the front panel 4 which is bolted to a flange 8. An aircraft seal is formed by the deformation of a rubber packing ring seated in a recess in the panel 4 and compressed against the flange 8. Five parallel hoops 10 of rectangular, channel, I, or T section are provided to prevent the housing expanding when the inside pressure is greater than that outside and these may be welded to the corners 11 of the housing 1. Specification 712,826 is referred to.

9. 发明专利

GB701796A Improvements in or relating to chassis assemblies of electrical components 未知
公开(公告)号：GB701796A
公开(公告)日：1954-01-06
申请号：GB2925250
申请日：1950-11-29
申请人： GEN ELECTRIC CO LTD , WILLIAM HENRY LEWIS HEWITT , ARTHUR IAN FORBES SIMPSON
IPC分类号： H05K5/00
摘要： 701,796. Switchboards. GENERAL ELECTRIC CO., Ltd., HEWITT, W. H. L., and SIMPSON, A. I. F. Nov. 29, 1951 [Nov. 29, 1950], No. 29252/50. Class 38(5) Also in Group XL(c) A chassis assembly comprises a pair of members hingedly connected together and each carrying electrical components, the connecting wires between the two members being combined into a single cable form which lies close to the hinge and has its ends doubled back and clamped to the two members. In Fig. 1, the lower member 3 is fixed to front panel member 1 and side members 4 and 5, and the upper member 2 is secured to members 4 and 5 by pivots 18 and 19, so that it may be rotated 180 degrees to give access to the wiring. Components on members 2 and 3 are interconnected by means of cable form 36 which runs along the hinge axis. Member 2 is supported in its closed position by a pillar on member 3 and may be bolted to panel member 1. A socket 29 is provided on the panel member for external connections, and the assembly may be enclosed in a dust cover and fitted in a tray. The assembly may constitute a relay switching device for use in an aircraft radio installation. Specification 673,092, [Group XL(c)] is referred to.

10. 发明专利

GB525404A Improvements in electrical superheterodyne frequency-changers 未知
公开(公告)号：GB525404A
公开(公告)日：1940-08-28
申请号：GB202339
申请日：1939-01-20
申请人： GEN ELECTRIC CO LTD , ARTHUR IAN FORBES SIMPSON , LUIS CHARLES STENNING
IPC分类号： H04B1/26
摘要： 525,404. Superheterodyne circuits. GENERAL ELECTRIC CO., Ltd., SIMPSON, A. I. F., and STENNING, L. C. Jan. 20, 1939, Nos. 2032 and 7653. [Class 40 (v)] A short wave superheterodyne receiver in which the local oscillations are obtained through a chain of frequency multipliers, has the last doubler replaced by a second frequency changer so that the required I.F. signal is obtained by a double subtraction from the incoming signal. This arrangement has the advantage that a frequency changer produces slight amplification whereas a frequency doubler does not. The last doubler may feed its output directly to both frequency changers, but as shown in the Fig. the local oscillations applied to the second frequency changer are derived by filtering the output from the first changer. The last doubler may be omitted if the local oscillations applied to the second changer are derived by filtering out from the output of the first the third harmonic of the local oscillations supplied thereto.

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