baber/WOPTO huggingface dataset:
Patent GB-1031312-A (GB)
Title: Electron discharge devices
IPC: H01J19/42
Filed: 1964-05-08
Abstract: 1,031,312. Thermionic valves. SYLVANIA ELECTRIC PRODUCTS Inc. May 8, 1964 [June 20, 1963], No. 19340/64. Heading H1D. In a high voltage rectifier tube comprising an elongated envelope of insulating material containing a cathode 9 a tubular anode 7, and a shield 11 spaced from the anode, an annular area of the inner surface of the envelope extending between the anode and shield is coated with a metal film 13 which constitutes a radiation barrier. As shown, the shield 11 is supported by a mica spacer 23 and conductive leads 27. During manufacture a layer of the material of film 13, e.g. copper or silver, is electro-deposited on shield 11, and after assembly of the tube components within the envelope, and during the final steps of heating and evacuating the envelope and activating the cathode, the shield 11 is heated by induction to effect vapour-deposition of the metal film 13. The film may have a thickness in the range 0À5 x 10<SP>-6</SP> to 4À0 x 10<SP>-6</SP> inches, and extends from a line 35 adjacent the anode to a line 37 spaced from seals 29.
Patent GB-999363-A (GB)
Title: Improvements in or relating to substituted thioanisole
IPC: C07C/
Filed: 1962-01-15
Abstract: The invention comprises 3-nitro-4-bromo-thioanisole and its preparation from dimethyl-(3 - nitro - 4 - bromophenyl - sulphonium perchlorate by known methods (e.g. heating with saturated sodium chloride solution); optional preceding steps are the reaction of 4-bromo-thioanisole and dimethyl sulphate forming dimethyl - (4 - bromo - phenyl) - sulphonium methosulphate, nitration of which yields the 3-nitro-compound, the perchlorate being obtained therefrom by metathesis.
Patent GB-1379926-A (GB)
Title: Polymers of a backbone polymer having a perfluoroalkyl group containing monomer derived from fumaric and related acids grafted thereto
IPC: C08F8/00
Filed: 1972-04-26
Abstract: 1379926 Modifying polymers with perfluoroalkyl compounds CIBA-GEIGY AG 26 April 1972 [3 May 1971] 19415/72 Headings C3P and C3R [Also in Division D1] A modified polymer comprises (A) a backbone polymer to which has been grafted (B) a compound of formula (R f -A) n -PG wherein R f  is a perfluoroalkyl group of at least 3 carbon atoms, A is a linking group, n is 2 or 3 and PG is an ethylenically unsaturated group derived from fumaric, maleic, citraconic, mesaconic, itaconic, trans-aconitic, cis-aconitic or methylene malonic acid. The backbone polymer and fluorine-containing compound are mixed together, optionally in the presence of a free radical catalyst, and heated to yield the modified polymer. Examples are given in which (a) a bis- [1,1,2,2-tetrahydro (mixed C 6 F 13 , C 8 F 17 , C 10 F 21  and C 12 F 25 )] fumarate is grafted on to polyethylene and the resulting product is blended with polyethylene, or dissolved in mineral spirits to which 1,1,1-trichloroethane is added and applied to cotton, or the said fumarate is grafted on to ethylene-vinyl acetate copolymer, ethylene-propylene-butadiene terpolymer, polypropylene, polyvinyl chloride, polystyrene, ABS copolymer rubber, butadiene-acrylonitrile rubber, poly-(ethylene terephthalate), poly- (hexamethylene adipamide), poly-(bisphenol A- phosgene) reaction product or polyvinyl alcohol; and (b) polyethylene is grafted with a fumarate as in (a), or with [CHCOOCH 2 C 7 F 15 ] 2  trans,
Patent GB-1305257-A (GB)
IPC: G03B21/11
Filed: 1970-04-23
Abstract: 1305257 Filmstrip projection apparatus EASTMAN KODAK CO 23 April 1970 [25 April 1969] 19543/70 Heading G2A In a projection reader with a variable speed film transport means, the projection gate comprises a fixed glass plate 1 and a glass pressure plate 2 which is automatically swung about pin 5 to an open position in response to an increase in film transport speed. A transport speed controller energises electromagnet 12 at the higher speeds whereby lever 6 is pivoted clockwise at pin 7 and the resulting movement of rod 10 allows spring- loaded tapered pins 26 to force the plate 2 open.
Patent GB-817419-A (GB)
Title: Internally lined pipe and method of making same
IPC: B29C57/00
Filed: 1957-06-21
Abstract: 817,419. Lining pipes with plastic material. LEWIS, D. R., and JAFFE, J. A. June 21, 1957 [Jan. 7, 1957], No. 19575/57. Class 87(2). [Also in Group XXVIII] An internally lined pipe comprises an outer metal section 20 having flange rings 24 and a synthetic plastic liner pipe having projecting ends 36 which are flared against the flange rings to provide a continuous lining internally and at both ends. The liner may be made of tetrafluoroethylene resin, polyethylene, vinyl and butyral plastics, &c., and is extruded from powder granules 39 urged by a pressure ram 40 through a ring like orifice formed by a tube 41 and die 42 therein. Heat bands 43 may be provided and controlled by thermocouples, &c., and an endless length of liner tube 44 is produced and cut into lengths as required. The flaring operation for the projecting parts 36 is carried out by inserting a heated flaring tool 47 secured by rods 48, 49 to the flange and turning a hand wheel 52, Fig. 5, after which it is removed and the end 53 is then flattened against the flange by a heated tool 54, Figs. 6, 7. The lined pipes may be of straight sections, T-shaped or other forms and for elbows a heated liner is arcuately clamped to bend it to the desired shape, Fig. 16 (not shown).
Patent GB-319849-A (GB)
Title: Improvements in electrically heated apparatus for evaporating, distilling and the like
IPC: F24H1/20
Filed: 1928-07-06
Abstract: 319,849. Reavell, J. A. July 6, 1928. Heating by electricity.- Evaporators, stills, &c. A are heated by electric elements E immersed in a fluid circulating between intercommunicating jackets B, J, K, D. The circulation is assisted by a pump F, and an expansion tank H is provided. Specifications 318,340, 319,298, and 319,391 are referred to.
Patent GB-381922-A (GB)
Title: Improvements in and relating to electric suspension insulators
IPC: H01B17/02
Filed: 1931-07-08
Abstract: 381,922. Insulators. GARLAND, C. S., Oaklands, Battenhall, Worcestershire. July 8, 1931, No. 19669 and 19670. [Class 36.] The head 5 of an insulator pin 2 is formed with continuous flanges 6 integral with the pin between which is inserted a retaining spring 7. In the construction of Fig. 2, a bolt 8 has a detachable head 9 with an externally screwed plug portion 10 adapted to engage a socket formed in the bolt. The head 9 and the top of the bolt shank form flanges between which is housed the retaining ring 11. In a modified construction, an annular nut on the bolt head forms the upper flange.
Patent GB-239348-A (GB)
Title: Improvements in gramophone soundboxes
IPC: H04R7/12
Filed: 1924-08-20
Abstract: 239,348. Lunn, H. W. Aug. 20, 1924. Sound-box c.asings. -Sound - boxes are fitted with a dished apertured cover on the stylus arm side to improve the tone. The cover A is formed from a centrally apertured disc of copper, tin, zinc or alloy, which is beaten to dome form with a flat rim B and a part F pressed up to clear the stylus arm. A brass ring C is soldered on the rim, by which the cover is secured to the sound-box by screws.
Patent GB-767225-A (GB)
Title: Improvements relating to pest control agents and to phosphonic acid esters suitable as active ingredients therefor
IPC: C07F9/113
Filed: 1954-07-06
Abstract: The invention comprises dialkoxyphosphoryldichloroacetic acid esters of formula <FORM:0767225/IV(b)/1> where R represents an alkyl radical and R1 represents an alkyl or alkenyl radical which may be interrupted by O or by -O-CO- or by -CO-O- groups, or which may be closed into a ring by means of O.  Compounds particularly described are those where R is methyl, i.e. dimethoxy compounds, but diethoxy and dibutoxy compounds are also mentioned.  In examples compounds are described where R is methyl and R1 is methyl, n-hexyl, ethyl, n-propyl, n-butyl, isobutyl, n-amyl, isoamyl, a -g -dimethyl-butyl, n-octyl, b -ethyl-hexyl, methoxyethyl, ethoxyethyl, butoxyethyl, ethoxy-ethoxy-ethyl, and acetoxyethyl; these compounds are prepared by reacting trimethyl phosphite with a trichloroacetic acid ester at a temperature between 60 DEG  and 100 DEG  C., followed by heating to 80 DEG  to 150 DEG  C.ALSO:A pesticidal composition comprises a dialkoxyphosphoryl-dichloroacetic acid ester of formula:-<F\1> where R is a methyl or ethyl radical, and R1 is an alkyl or alkenyl radical which may be interrupted by O or by - O - CO - or - CO - O - groups, or which may be closed into a ring by means of O, and a diluent or carrier therefore.  In examples dimethoxyphosphoryl dichloroacetic acid methyl and ethyl esters, diethoxyphosphoryl dichloroacetic acid methyl and ethyl esters, dimethoxyphosphoryl - dichloro - acetic acid n - hexyl and n - octyl esters, dimethoxyphosphoryl dichloroacetic acid methoxyethyl ester, and diethoxyphosphoryl - dichloroacetic acid methoxyethyl ester, are used in compositions containing kerosene, difluorodichloromethane, fluorotrichloro - methane, talcum, kaolin, bentonite, chalk, sulphite waste liquor, sodium dibutyl naphthalene sulphonate, acetone, xylene, alkylated naphthalenes, high molecular condensation products of fatty alcohols and ethylene oxide, lanolin, dichlorodiphenyltrichlorethane, and d  - hexachlorocyclohexane. Other ingredients mentioned are whiting, ground limestone, cole, magnesia usta, kieselguhr, boric acid, tricalcium phosphate, sawdust, powdered cork, trichlorethylene, tetrachlorethane, ethylene chloride, benzene, chlorobenzene, soap, cyclohexanone, toluene, tetrahydronaphthalene, phthalic acid esters, mineral and vegetable oils, petroleum jelly, sugar, resins, glue, casein, aligmates, chlorinated phenols, quaternary ammonium compounds, sulphur, cupric oxychloride and fluoride, hexaethyl tetraphosphate, tetraethyl pyrophosphate, chlorinated camphene, and octachloromethano-tetrahydroindane.  A list of esters of the invention is given.
Patent GB-644347-A (GB)
Title: Circuit arrangements for charging condensers
IPC: H03K3/537
Filed: 1948-07-23
Abstract: 644,347. Ignition systems. BRITISH THOMSON-HOUSTON CO., Ltd., WELCH, D.F., and RANDALL, K. B. July 23, 1943, No. 19757. [Class 7(iv)] [Also in Groups XI and XXXV] An ignition system for an internal-combustion engine comprises a condenser C3 charged to a high voltage from a low voltage source through a transformer having its primary L1 supplied with voltage pulses from the source and its secondary L2 connected through a spark gap G1 or rectifier, with damping means included in the charging circuit to prevent the reverse voltage which appears across the gap or rectifier, after the charging current passes through zero, from rising above the breakdown voltage of the spark gap or the inverse voltage of the rectifier. The voltage pulses may be obtained from an accumulator by employing a vibrator or contact breaker CB and the damping means may constitute a resistance R connected across the contacts of the breaker or across the primary or secondary windings of the transformer. The energy accumulated in condenser C3 may be released over a further spark gap G2 and which may be triggered or a similar device. To obtain a voltage across the spark plug S in excess of that across condenser C3 an inductance may be included between the condenser C3 and plug S and if connected between the condenser C3 and the junction of the two gaps G1, G2 makes the discharge voltage of condenser C3 less dependent on variations in breakdown voltage of gap G2. To increase the rate of charge on the condenser a number of parallel connected charging circuits may be employed and supplied from a common source. Practical values of the circuit constants are given. Specifications 529,558 and 530,601 are referred to.
Patent GB-357978-A (GB)
Title: Improvements in x-ray tubes
IPC: H01J35/32
Filed: 1930-06-30
Abstract: 357,978. R÷ntgen-ray tubes. LINDEMANN, F. A., Clarendon Laboratory, Oxford. June 30, 1930, No. 19786. [Class 39 (i).] One electrode, the cathode or the anticathode, is centrally disposed with a lead at one end only and is surrounded along most of its length by the other electrode which is permeable to X-rays throughout its length. Thin tubes may be used therapeutically instead of radium needles or tubes of small bulbous form may be used in hollow organs. The outer electrode may form the envelope of the tube or a metallic deposit on the glass or metal envelope or may be of gauze or network or a spiral winding on longitudinal wires. The inner electrode may be a wire positioned by insulating beads. When the anticathode is the inner electrode, it is of platinum substitute sealing-pin wire known as " Erkadraht " wound with a platinum strip and the surrounding cathode is of aluminium gauze with square holes. The outer electrode may be earthed or the tube surrounded by an earthed casing acting as a filter or having a window for the rays and the lead to the central electrode may be surrounded by an earthed flexible casing which may be filled with insulating material. A constant gas-pressure may be maintained by a vapour-forming substance unaffected by the electric current. The tube may be closed by an aluminium plug 9. In the Figure, cathode rays from the cathode 2 strike the anticathode 4 and the X-rays produced pass out through the anticathode.
Patent GB-153672-A (GB)
Title: Improvements in electric signalling systems specially applicable to multiplex carrier current systems
IPC: H04J1/08
Filed: 1919-08-12
Abstract: 153,672. Western Electric Co., (Western Electric Co.). Aug. 12, 1919. Electric oscillations in line-wires, signalling by. -Relates to multiplex systems in which signals or speech currents are transmitted as modulations of high-frequency carrier currents. Carrier currents of different frequencies are supplied from sources 2, 3, 4, Fig. 1, to valve modulators 5, which are balanced, so as to suppress the unmodulated carrier currents while transmitting carrier currents which have been modulated by microphone or signal circuits 1. The modulated currents are amplified by valves 6 and are sent to line 12 through filter circuits 7, which are opaque to all frequencies except a band ranging from the carrier frequency to the difference of the carrier and signal frequencies, or from the sum to the difference.of these frequencies. At the receiving-station, Fig. 2, the line currents are sorted by similar filters 13, and, together with currents of the carrier frequencies supplied from local sources 15, are supplied to detecting-valves 14, which are balanced, like the modulating-valves 6, Fig. 1, so as to suppress unmodulated carrier currents. The modulated combination of the line currents with the local currents of carrier frequency produces currents of the original speech or signal frequency which are amplified by valves 16 and delivered to telephones 17 through filter circuits 18, which are opaque to high frequencies. The invention consists in grounding the mid-point of one section of each line filter, as at 20, Fig. 1, and 21, Fig. 2, for the better suppression of currents of foreign frequencies. A modification is described in which the terminal impedances of the filters are connected in series with the line instead of in parallel, the terminal impedance of each filter being designed to offer substantially infinite impedance to currents within the range of transmission of its associated signal channel but low impedance to currents of other frequencies
Patent GB-152462-A (GB)
Title: Improvements in and connected with visual weather screens
IPC: A61F9/02
Filed: 1919-08-12
Abstract: 152,462. Normanville, S. A. de. Aug. 12,1919. Look-out shelters and wind-shields.-In a centrifugal visual weather screen, of the kind described in Specification 107,033, the motive power is derived from wind vanes fixed to the circumference of the glass disk. The vanes 6 are fixed to the edge of the disk, which may be held by the handle 4. A covering protects the observer's head. When applied as a fixed lookout, the disk is mounted in a revolving hood on a pedestal. A conduit surrounds the edge of the disk into which the air after passing through the vanes is conducted and led away behind the disk.
Patent GB-374307-A (GB)
Title: Improvements in or relating to the production of rubber shoes
IPC: B29D35/02
Filed: 1931-07-10
Abstract: 374,307. Boots &c. WISSAERT, M., 240B, Chaussee de Ninove, Brussels. July 10, 1931, No. 19887. Convention date, July 18, 1930. [Class 17 (ii).] A shoe mould for producing one-piece rubber shoes consists of a core, on which an unvulcanized rubber sheet forming the upper and heel elements is placed, a plate carrying the sole on which the covered core is placed, a, cover member completely surrounding the core except for a recess at the heel, and a semicircular removable member arranged so as to engage with the sole plate and in the recess of the cover. Preferably, the cover member is so shaped as to allow a plurality of moulds being superposed during pressing. As shown, (Figs. 2, 4, 5, and 6), the lower part 1 of a mould has a recess 2 for the sole rubber. Recesses 13 in the mould provide for the formation. of straps in the shoe upper. The cover 9 is cut away at 16 forming a recess 17 in which fits the semicircular member 18. The core 21 fits the cover so that there is a space of about 2 mm. between them, in which space the rubber upper lies.
Patent GB-1507827-A (GB)
Title: Handling rolled transfer bars
IPC: B21B1/38
Filed: 1974-05-06
Abstract: 1507827 Coiling and uncoiling metal strip STEEL CO OF CANADA Ltd 18 April 1975 [6 May 1974] 19917/74 Heading D1T Transfer bars are coiled into a coreless coil (at 20), then uncoiled and passed to a finishing operation and whilst the uncoiling is proceeding the coil is transferred from the coiling location (at 20) to an adjacent uncoiling location (on rolls 48, 58) by means 22 which has contact with the coil at least one continuously moving point, and during the uncoiling step coiling a further transfer bar to form a further coreless coil. As described, a rolled metal transfer bar is bent and fed up plate 29, bent at rolls 30, 32, 33, and coiled about itself and initially supported on roll set 20. When the coil reaches a certain size it transfers leftwardly and downwardly under its own weight to rest upon rolls 35, 38. When the trailing end of the bar passes through the bending rolls 20, 32, 33, it swings free from the coil to the position indicated in Fig. 5 (not shown). The rotation of rolls 35, 38 is reversed and the coil is thus unwound towards the left of Fig. 4. The peeler arm 24 is swung downwardly onto the unwinding coil to assist the unwinding process. The wound coil is then transferred to the uncoiling location by arms 22 which are hydraulically moved to engage with the open centre of the coil (Figs. 1 and 2 not shown). The rotation of the coil on the rollers, and stub axials on the ends of arms 22 avoid the formation of cold spots on the hot wound coil. When the coil is 75% uncoiled, a new coil is formed on roll set 20 and the uncoiling location is free when the new coil is fully wound. Rolls 32, 33 35, 36 and 38 may be adjustable so as to set the tightness of coil in the bar being wound. A hot metal detector 44 may sense the trailing end of the bar being coiled and signal the counter-clockwise rotation of the rolls 35, 38 to initiate unwinding of the coil.
Patent GB-516711-A (GB)
Title: Apparatus for use in comparing screw-threads
IPC: G01B3/40
Filed: 1938-07-06
Abstract: 516,711. Gauging screw threads. HERBERT, Ltd., A., and CURSON, T. July 6, 1938, No. 19967.. [Class 106 (ii)] The externally threaded work piece to be compared with a standard is placed between relatively movable members 13, 15, Fig. 1, of which the latter is spring pressed and connected through suitable gearing with an indicating needle 16, moving over a scale 17, the work engaging surfaces 20, 23 of members 13, 15 being formed-as threads so shaped that in one position of the work piece the full form is indicated and' in another position the effective diameter. To accomplish this the threads 24, Fig. 2, at one end 25 have their tips 26 flattened and their roots 27 enlarged so that they can engage only the flanks of the threads on the work piece. The teeth 20 are formed on a part 21 adapted for swivelled engagement with member 13 by means of a cap 22 secured thereon. The thread teeth 23 may be similarly supported. When the two sets of teeth are appropriately turned one set is displaced relatively to the other by half the pitch. The member 13 is screw threaded to the limit 12 and may be adjusted by the knob 18. when the lock nut 19 is released.
Patent GB-221622-A (GB)
Title: Improvements in the manufacture of carburetted water gas
IPC: C10J1/213
Filed: 1923-08-03
Abstract: 221,622. Humphreys & Glasgow, Ltd., (Evans, 0. B., Perry, J. A., and Eichengreen, L. B.). Aug. 3, 1923. Producers.-Heavy oils or residuums are gasified in a water-gas generator 1 by heating the upper outer edge of the fuel bed 4 during the blasting period by the combustion of an admixture of producer gas, generated by a primary air blast 5 at the bottom of the fuel bed, and of secondary air, supplied through the pipe 2, which is positioned below the top 3 of the fuel bed 4, and spraying the heavy oil during the runs on to said heated edge. The oil is preferably sprayed on to the heated zone by means of a nozzle 8. During the run, steam is admitted through a pipe 11.
Patent GB-704519-A (GB)
Title: Regulating and control devices for absorption refrigerators
IPC: F25B49/04
Filed: 1952-08-08
Abstract: 704,519. Thermally-actuated valves. KROMSCHRODER AKT.-GES., G. Aug. 8, 1952 [Aug. 20, 1951], No. 20020/52. Class 135 A regulating and control device for absorption refrigerators comprises a gas pressure regulator 1, an adjustable thermostat, e.g. 2a, 2c, 2d, e.g. of the expansion bar type, controlling a valve 2b containing a by-pass. a gas deficiency safety device 3 controlled by a bimetal 12, the regulator, thermostat and safety device being constructed as units connected by pipes 4a, 4b. A push button 8 acting through a Bowden cable 9 opens the spring loaded safety device valve until the burner 6 heats the bimetal and moves a rod 13 into position to hold this valve open.