baber/WOPTO huggingface dataset:
Patent GB-722907-A (GB)
Title: Improvements in or relating to television pick-up tubes, and television apparatus incorporating the same
Inventor: THEILE RICHARD
IPC: H01J29/02
Filed: 1951-10-11
Abstract: 722,907. Television pick-up tubes. PYE, Ltd. Oct. 9, 1952 [Oct. 11, 1951]. No. 23699/51. Class 39 (1). A television pick-up tube of the storage type in which the scanning of the storage surface is effected by high velocity electrons, comprising a secondary electron multiplier extending around the inside of the tube and facing the storage surface and comprising a plurality of multiplying electrodes with an electricalscreen interposed between the multiplier and the storage surface, is provided with a photo-cathode and means for illuminating the photo-cathode only during a part or the whole of the line and/or frame blanking periods of operation of the tube. In the image iconoscope shown in Fig. 1 the multiplier is enclosed in a screening box 17 covered by a screening mesh 18 which are both held at a potential of 100 volts or so less than the potential of the first dynode 12; they may be at a slight positive or negative potential relative to the wall coating 10 to maintain a uniform field over the target surface. To assist in maintaining the field uniform the storage surface 5, provided with a signal plate 6, may be provided with a slightly conducting layer 25 of glass, an insulating layer 26 being interposed between layers 5 and 25, The peripheral regions of the storage surface may be formed with conducting electrodes 27 connected to a source of bias potential. A photo-cathode 33 illuminated by a light source 34 during line or frame blanking periods provides electrons for restoring the target to a negative potential; the target may be pulsed positively with respect to cathode 33 during the periods of illumination but this is not essential. Under high light conditions the main photo-cathode 2 may be pulsed so that it operates only during frame and/or line blanking intervals to reduce " noise." In a modification, Fig. 2 (not shown), the main photo-cathode 2 is used to provide the flooding electrons instead of the auxiliary photo-cathode 33 which is omitted. The main photo-cathode is illuminated by light from a cathode ray tube which is pulsed so that it produces light only during frame blanking periods; pulses are applied simultaneously either to the signal electrode 6 to make the target positive or to the collector electrode 10 or multiplier (the screen 18 or first dynode 12) to make it negative with respect to the target. The two sets of pulses may be derived from a single master oscillator. If desired, the biasing pulses may be applied only during a portion of the frame blanking periods, the picture to be transmitted being projected on to the target during the remaining portions of the frame blanking periods; this reduces " noise " under high light conditions. Specifications 687,270, 688,904, 697,722, [Group XL(b)], 710,091 and 721,943 are referred to.
Patent GB-1086887-A (GB)
Title: Improved apparatus for measuring small variations in pressure
IPC: G01L9/00
Filed: 1965-06-03
Abstract: 1,086,887. Pressure gauges. O. BRAUN and B. BRAUN [trading as B. BRAUN]. June 3, 1965 [June 19, 1964), No. 23701 /65. Heading G1L. An apparatus for measuring or registering small variations in gas pressure has a first flexible tube 12 which is enclosed within a second flexible tube 13, the first flexible tube 12 containing a sealing liquid 16 containing salt additives sealing off the measurement space in the vessel 14 and preferably serving simultaneously for measuring the pressure-and the space between the two tubes being filled with a second liquid 17 of lower salt concentration or without any salt additive or salt content. The level of liquid 16 is maintained constant by electrodes 7, 8 completing or breaking a circuit through the liquid 16 to a reversible motor 4 which drives an endless belt 2 attached to the vessels 1, 18. The belt also carries a pencil 9 which records belt movements on a drum 10 driven by a motor 11. In a modification (not shown) the position of the two liquids may be interchanged.
Patent GB-654068-A (GB)
Title: Improvements in electric discharge devices
IPC: H01J61/56
Filed: 1947-08-27
Abstract: 654,068. Non-metal resistances ; resistance coatings and deposits. BRITISH THOMSONHOUSTON CO., Ltd. Aug. 27, 1947, No. 23725. Convention date, Aug. 27, 1946. Drawings to Specification. [Class 37] [Also in Group XL (a)] A paste suitable for coating on the glass surface of a glow discharge lamp as a resistance element contains silver oxide, methyl alcohol, glycerin and lead borate in specified quantities. In a modified arrangement, the resistance element comprises a phenolfurfurol resin with a conductive ingredient such as powdered carbon, silver or platinum.
Patent GB-692943-A (GB)
Title: Improvements in and relating to bobbins
Inventor: CURTIS GEOFFREY
IPC: B65H75/18
Filed: 1950-09-28
Abstract: 692,943. Bobbins. COURTAULDS, Ltd. Aug. 23, 1951 [Sept. 28, 1950], No. 23743/50. Class 120(iii) A bobbin for low denier cellulose acetate threads having a yarncarrying surface between seven and ten inches long is formed of a metal shell 1 which is splayed as at 4 in the vicinity of its lower end and has an integral lower flange 6, the minimum diameter of the shell being from one and three - quarters to three and a half inches and the ratio of the length of the splayed portion to the total length of the yarn carrying surface being 0.2 to 0.4: 1. The shell may also be splayed as at 2 and/or provided with a smooth collar 7 of phenolformaldehyde resin forming an upper flange and a rubbing surface for thread drawn off the bobbin, and may comprise a lower cylindrical portion 5 in addition to a central cylindrical portion 3. The flange 6 may be strengthened by a metal ring insert. Specifications 626,177 and 692,944 are referred to.
Patent GB-661008-A (GB)
Title: Improvements in valves
IPC: F02M59/46
Filed: 1948-09-10
Abstract: 661,008. Safety valves. AKTIEBOLAGET ATLAS DIESEL. Sept. 10, 1948 [Sept. 18, 1947] No. 23818/48. Class 135. Also in Group XXVIII. A valve for use with a fuelinjection pump 3 and arranged to permit flow in either direction comprises a valve member having an annular closure surface 16 which coacts with a seating surface 17, a spring 11 urging an orificed member 12 against a shoulder 10 to close the valve, and a light spring 18 opposing the spring 11. A passage 14 through the valve member opens into an annular groove 23 so that flow is permitted when the closure surface 16 is is moved above or below the seating surface 17. Specification 645,186, [Group XXVIII], is referred to.
Patent GB-799141-A (GB)
Title: Electroluminescent lamp
IPC: H05B33/12
Filed: 1954-08-17
Abstract: 799,141. Electroluminescence. SYLVANIA ELECTRIC PRODUCTS, Inc. Aug. 17, 1954, [Aug. 17, 1953], No. 23958/54. Class 39(1). One of the electrodes of an electroluminescent lamp has a resistivity of at least 10<SP>4</SP> ohms per unit square. A glass plate 1 carries a transparent conductive coating .2, an electroluminescent layer 3 which may incorporate dielectric material, and a backing coating 4 of high resistance material, e.g., carbon, a high resistivity metal or a semi-conductor. The surface of layer 3 may be rough or wavy, the high resistance layer conforming thereto and contacting also a low resistance layer 8. Clamping rims 9, 10 hold the parts together, and the device may be enclosed in an evacuated hermetically-sealed envelope. If the layer 3 is of an electroluminescent layer, alone, it is applied as a suspension in ethyl cellulose, and the latter subsequently burnt off. The high resistance coating may be a conductive glass, e.g., as made by burning glass and semi-conductive spinels or glass or resin and graphite mixed and fused on porcelain. The electroluminescent material may be a tincontaining zinc manganese silicate, a manganeseactivated zinc fluoride, a zinc or cadmium sulphide or selenide activated by copper or copper and manganese and containing a little lead.
Patent GB-1165144-A (GB)
Title: 8(14)-Seco-Steroids and a process for their manufacture
IPC: C07C49/613
Filed: 1966-09-02
Abstract: 1,165,144. Optically active compounds. SCHERING A.G. 2 Sept., 1966 [14 Sept., 1965], No. 24031/69. Divided out of 1,165,143. Headings C2C and C2U. Novel 8(14)-seco-steroid of the general formula in which Ca represents an asymmetric carbon atom in the 13-position of the seco-steroid, X represents a hydrogen atom, a free, esterified or etherified hydroxyl group, a free or esterified carboxyl group or a saturated or unsatured aliphatic hydrocarbon group containing 1 to 4 carbon atoms which may be substituted by a halogen atom or by a free or functionally converted hydroxyl, amino or carboxyl group, Y represents a steroid residue attached to the B-carbon atom and Z and Z<SP>1</SP> together with the Ca carbon atom represent a D- or D-homo ring comprising a first group and a second group which groups are present in positions that are symmetrical with respect to the Ca carbon atom, the first group being selected from the list consisting of the following groups: in which R 1  represents a hydrogen atom or an acyl, aryl or alkyl group, in which R 2  represents an H atom, or an OH, O-alkyl, O-aryl or NH 2  group, in which R 3  represents a hydrogen atom or an alkyl, aryl or acyl group, in which Hal represents a halogen atom, and the second group being a group that is obtainable in an organic compound from the first group by treatment (under conditions suitable for fermentation) with a micro-organism or with an enzyme of such a micro-organism, the remainder of the D- or D-homo-ring being symmetrical with respect to the Ca carbon atom, are obtained in a process wherein a compound of the formula wherein X, Y and Z have the above defined meanings and Ci represents an optically inactive carbon atom, is treated under conditions suitable for fermentation with a micro-organism or with an enzyme of such a micro-organism. Suitable micro-organisms are fungi, yeasts or bacteria. The 8(14)-seco steroids, may be cyclized to form steroids containing a closed C-ring, if desired after protecting any sensitive groups not taking part in the cyclization. The products of the ring closure reaction may be reduced to saturate double bonds therein, oxidized to convert 17-OH to 17-keto and a group in 3- position may be functionally converted, e.g. by saponification, etherification or esterification.
Patent GB-1511757-A (GB)
Title: High frequency electrical power supplies
IPC: H05B41/24
Filed: 1976-06-10
Abstract: 1511757 Supply systems for gas discharge lamps ARMSTRONG CORK CO 10 June 1976 [12 June 1975] 24055/76 Heading H2H A high frequency power supply, more particularly for supplying a plurality of gas discharge tube comprises an oscillator including a transformer 9 having isolated primary and secondary windings, the oscillator having two input circuits and two output circuits, one of which output circuits includes a serially connected inductor 7 and the other output circuit a serially connected capacitor 8 whilst a source of electrical energy is connected to one of the input circuits and the operation of the oscillator is controllable by way of the other input circuit. A system for supplying two gas discharge tube comprises an oscillator having two transistors 36, 37 and an output transformer 9 with a plurality of secondary windings 42-45. One discharge tube is connected to two terminals 4, 6 having an inductor 7 connected in series therewith whilst the other discharge tube is connected to terminals 2, 6 having a capacitor 8 in series therewith. To one input circuit 15, 15<SP>1</SP> of the oscillator is connected a D.C. source, the operation of the oscillator being such that the transistors 36, 37 are alternately conductive as saturation occurs in the winding 39, 40 of the transformer 38 whereby by the halves 10, 11 of the centre-tapped primary winding of the transformer 9 are alternately energized the oscillators being sustained by the feed-back winding 31. The system further comprises a relaxation oscillator formed inter alia, by a diac 35 a resistor 34 and a capacitor 46 and serves as a starting device for the transistor oscillator, operation of the relaxation oscillator being inhibited when the transistor oscillator is running. The second input circuit 30, 30<SP>1</SP> of the oscillator is connected to a switch by way of which the operation of the transistor is controlled. When the switch is open the transistor functions normally but closure of the switch short circuits a winding 41 on the transformer 38 thereby inhibiting operation of the oscillator. In a second embodiment the oscillator is provided with a pair of thyristors driven by means of a trigger generator operation of which is inhibited by closure of the switch. Certain of the windings 42-45 are provided for filament heating and the thyristor oscillator is provided with energy recovery means. The oscillator output frequency is of the order of 22KHz.
Patent GB-296668-A (GB)
Title: Variable speed power transmitting mechanism
IPC: F16H29/22
Filed: 1928-08-21
Abstract: 296,668. Turner, L. J. Sept 3, 1927, [Convention date]. Variable-speed ratchet gearing is controlled automatically by a centrifugal variable-throw driving crank 23 and comprises a centrifugally controlled clutch 50 for obtaining a solid high-speed drive. Centrifugal weights 5, 6, Fig. 1, slide radially against springs between discs 7 secured to a driving-shaft 1. The weights are co-ordinated by pairs of links 10 Fig. 2, and blocks 13 slidable on the discs 7. The variable throw pin 23 is carried by a lever 21 which is pivoted at 22 to a disc 7 and is engaged by a pin 17 projecting from a weight 5. The pin 23, which moves as the weights fly out, engages the centre of radiating jointed links 25 - - 27, Fig. 4, which are pivoted upon blocks 29 reciprocated in radial slots 30 in a loose disc 31, which is kept from turning backwards by detent pawls 51. The blocks 29 are connected by push-rods 39 to circumferentiallyconstrained blocks 37 carrying spring pawls which drive a ratchet wheel in one direction. The wheel 35 is in a central aperture in the disc 31 and is fast on the driven shaft 2. Thus the speed of the shaft 2 rises with the throw of the crank, which is controlled by the weights 5, 6. The disc 31 is supported on a spider 32, Fig. 1, from a loose sleeve 33 which carries a clutch member 40. When the speed of the shaft 2 rises sufficiently, balls 42 fly out against springs 44 and through levers thrust a clutch member 50 against member 40. This causes the gearing and disc 31 to turn solid. Weights 56, Fig. 4, then swing the detents 51 inwards clear.
Patent GB-393255-A (GB)
Title: Improved rigid covering strip of asbestos-cement for roofs and walls
IPC: E04D1/26
Filed: 1931-08-27
Abstract: 393,255. Roofs ; tiles. SOC. ANON. JOHNS-MANVILLE, Moll, Belgium. Aug. 27, 1931, No. 24166. Convention date, Oct. 11, 1930. Void [Published under Sect. 91 of the Acts]. [Classes 20 (iv) and 87 (i).] Roofing-tiles or shingle strips comprise hexagonal or rectangular tabs 1 alternating with slots 4. Interlocking projections 2 and recesses 3 may be provided. The strips may be assembled to imitate a slated roof.
Patent GB-926207-A (GB)
Title: Improved air cushioned ball support units
IPC: F16C19/12
Filed: 1961-07-05
Abstract: 926,207. Bearings. A. P. PEDRICK. July 5, 1961, No. 24214/61. Addition to 925,268. Class 12 (1). In a modification to the parent Specification, the pressurized air is supplied to the spherical member A at an angle other than vertical to prevent the translational movement of the vehicle from causing the member A to engage the housing B. In embodiments the pressurized air is supplied at 45 degrees to the vertical, at 90 degrees to the vertical and at a combination of angles to the vertical by passing through a part-annular chamber P, Fig. 4, from where it passes through holes L, N, M. The hole M is positioned so that the air is also supplied vertically above the member A.
Patent GB-282895-A (GB)
Title: Improvements in or relating to the printing of characters, figures or numerals of continuous form by the use of stencils
IPC: B05C17/06
Filed: 1926-09-30
Abstract: 282,895. Read, T. Sept. 30. 1926. Addition to 176,525. Drawings to Specification. Stencils.-The apertures in the stencil plate described in the parent Specification are elongated, and preferably also tapered, where the complementary parts meet, so that an aperture overlaps part of a character already formed by means of a complementary aperture. The joins in the complete character are thus concealed.
Patent GB-1433911-A (GB)
Title: Tool storage magazine
IPC: B23Q3/157
Filed: 1973-05-22
Abstract: 1433911 Tool changers KEARNEY & TRECKER CORP 22 May 1973 [22 May 1972] 24261/73 Heading B3B A tool storage magazine 40 for storing tools for use in a machine tool spindle 20 comprises a plurality of tool holding carriers 41 removably attached to a chain 45 and is characterized by each carrier having a set of legs 85, 86 which during loading of the magazine slidingly engage pins 66 extending from the side of the chain to enable a carrier to be drivingly attached to the chain in a selected position the arrangement enabling the space between adjacent carriers to be varied in increments less than the minimum pitch between carriers to accommodate different size tools carried by the carriers. Each leg 85, 86 carries a roller 88 for engaging behind a retaining bar in the magazine frame. The retaining bar is not present at a tool change position 60 where the carriers 41 are supported by rollers 101 and the frame 39 of a tool change mechanism 38. The chain 45 is locked at a tool change position by a locking device (Figs. 10, 11, not shown) which engages the rollers 65 of the chain and acts to accurately align a selected tool at the tool change position. Each tool includes coding rings which are identified by a reading head. In a tool change operation a carrier 41 is attached to the frame 39 of the tool changer which is pivoted through 90 degrees to remove it from the magazine. The tool change mechanism 38 then effects an interchange with a tool in the carrier with the tool 21 in the spindle 20.
Patent GB-898183-A (GB)
Title: An intermittent stop control spring clutch
Inventor: TOMKO DONALD RAY
IPC: F16D13/02
Filed: 1960-07-12
Abstract: 898,183. Friction clutches. CURTISSWRIGHT CORPORATION. July 12, 1960, No, 24320/60. Class 80 (2).  In a normally disengaged coil clutch the free coils of the main driving spring are tightened on the driven member by the friction torque produced upon arresting either a control sleeve or an auxiliary control spring, which are in contact so as normally to rotate together. In the arrangement according to Fig. 2 the main spring coils 22 engage the driving member 10 and are connected at the opposite end 32 to the control sleeve 30, the outer surface of which is engaged by the auxiliary control spring 35 which is of opposite hand to the spring 22. Normally clutch member 10, spring 22, sleeve 30 and spring 35 rotate together, with the coils of spring 22 clear of the driven member 17, but upon moving a member A into the path of a projecting portion 38 of spring 35 the latter is arrested and tightened upon sleeve 30, the torque on which serves to tighten the free coils of spring 22 on the driven member 17 to transmit the drive from member 10. In the embodiment shown in Fig. 4 the auxiliary control spring comprises coils 55 engaging the inner surface of spring 50, and either integral with or connected to the end of the main spring 22<SP>1</SP> ; clutch engagement in this case is effected by arresting the sleeve 50 through an abutment 42<SP>1</SP>.
Patent GB-1121714-A (GB)
Title: Process for coagulation of rubber latexes
Inventor: BAUER JUERGEN
IPC: B29C65/00
Filed: 1966-06-01
Abstract: Rubber latex and an acid coagulation medium are fed into an extruder from which previously separated serum has been removed, the coagulum is kneaded, the serum is removed from the coagulum by pressing, the coagulum is kneaded with washing water and the washing water is separated from the rubber by a further pressing. The process is applicable to oil- and filler-extended rubbers. The removed serum may be used to dilute the acid coagulant.
Patent GB-481131-A (GB)
Title: Improvements relating to means for reciprocating the thread guide funnels of centrifugal spinning and twisting machines for artificial silk
IPC: D01D7/02
Filed: 1936-09-07
Abstract: 481,131. Centrifugal spinning-apparatus for artificial silk. BARMER MASCHINENFABRIK AKT.-GES. Sept. 7, 1936, No. 24391. Convention date, Nov. 28, 1935. [Class 120 (ii)] [Also in Group XXIV] In means for reciprocating the thread guide funnels of centrifugal machines for spinning artificial silk, in which cam discs are angularly adjustable for varying the stroke, the rollers or guide blocks 3 engaging the cam groove 1 are coupled to the guide frame 5 by a simple hinge joint, which, as shown, comprises a journal 6 fixed in a bevelled square-piece 4 carried by the frame. In a modification, for use when considerable adjust ment is desired, the square-piece 4 is loosely mounted on a bolt 9, Fig. 4, carrying the block 3 loosely on pins 10.
Patent GB-1218837-A (GB)
Title: Braking systems for vehicles
Inventor: DAWSON STUART BRUCE
IPC: B60T13/52
Filed: 1968-05-22
Abstract: 1,218,837. Fluid pressure brakes; antiskid systems; valves. GIRLING Ltd. 9 May, 1969 [22 May, 1968], No. 24403/68. Headings F2F and F2V. A vehicle braking system includes a master cylinder 11 and an hydraulic line 12 connecting the master cylinder to the brake mechanisms, a vacuum operated servo-mechanism 21 which can supply hydraulic fluid under pressure to the rear brake mechanisms and which includes a valve (31) connecting an inlet (23) to an outlet 24 and which closes when the pressure from the master cylinder exceeds 100 p.s.i. to close the hydraulic line, the said pressure also causing a valve 54 to open and render the vacuum servooperative, a valve 69 being opened by a spring 74, when the pressure in the vacuum supply line exceeds a predetermined value as for example when the vacuum source fails, to open a subchamber 25a to atmosphere causing a diaphragm 26 to move under a spring 29 and force the valve 31 against the pressure created by master cylinder 11, thus holding the valve 31 open so that the master cylinder is connected directly to the rear wheel brakes irrespective of the pressure generated by master cylinder 11. The servomechanism includes a diaphragm 37, both sides of which are subject to vacuum in the inoperative position of the mechanism and the control means for the servo-mechanism includes a Bourdon tube 44 which receives fluid under pressure from the master cylinder 11 and operates an air bleed valve 49 to supply air to one side of the diaphragm, the Bourdon tube being straightened as the pressure increases, thereby progressively opening the bleed valve to increase the pressure applied by the servo-mechanism. Each rear wheel drives a generator 63, the outputs of which are applied across a pair of capacitors which differentiate the outputs to provide signals representing deceleration of the wheels which signals are supplied through a control amplifier 64 to the coil of a solenoid 46 having a plunger 45 connected to the end of the Bourdon tube so that resistance to straightening of the tube can be applied to reduce braking force and preventing wheel-lock and skidding.