baber/WOPTO huggingface dataset:
Patent GB-1352902-A (GB)
Title: Method for laying cables
IPC: H02G9/02
Filed: 1971-07-19
Abstract: 1352902 Cable laying INDUSTRIELE ONDERNEMING WAVIN NV 19 July 1971 [25 July 1970] 33777/71 Heading H2C Cables 3 laid in a trench 2 are covered by a thin earth layer 5, a plastics cover-plate 6 and a fill-in of earth 8. The thickness of the earth layer 5 is only sufficient to provide a level base for the cover-plate, e.g. 1 to 2 ems. The plate may have longitudinal reinforcing ribs 7 or a cross-work of ribs 7, 7<SP>1</SP> (Fig. 2). The plate may be of thermoplastic material such as polyethylene or polyvinylchloride and may be reinforced with fibres. Dimensions of the plate are given in the Specification.
Patent GB-206040-A (GB)
Title: Improvements in speed controlling devices for railway and tramway trains
IPC: B60T7/12
Filed: 1922-12-11
Abstract: 206,040. Rodolausse, E. Dec. 11, 1922. Addition to 162,617. Track apparatus for stopping trains.-To the apparatus described in the parent Specification and in Specification 180,698 there is added means for applying the brakes at a speed dependent upon the existing pressure in the brakepipe and also upon the inclination of the track. The supervisory pointer 56<a> is pivoted upon a lever 56 the position of which is dependent upon a link 54 carrying a roller 57 guided in a slot in the bell crank 51, 52, which rests upon the supervisory cam 53, and held up against the lower edge of two cams 49, 79. The cam 49 is set according to the brake pipe pressure in the cylinder 46 by means of a piston and connecting rod 50. The cam 79 is set by the lever 71 which is controlled by floats 63, 64 in mercury vessels 60, 61 and a pendulum 74. Excessive vibration of the pendulum 74 is prevented by a rotating corrugated drum 89 pressed into contact therewith by a spring 93.
Patent GB-1208536-A (GB)
Title: Pistons for internal combustion engines
IPC: F16J9/00
Filed: 1969-07-04
Abstract: 1,208,536. Pistons. SULZER BROS. Ltd. 4 July, 1969 [8 July, 1968], No. 33875/69. Heading F2T. In an internal combustion engine piston 1 having a ring groove 4 in its head portion 3, the flank 7 of the groove remote from the crown has an annular projecting ledge 8 having an axial thickness B at its free edge which is not more than 0.2 times the width N of the groove. The head portion 3 is slightly tapered and at the top ring groove has a diameter D2 slightly less than the diameter D1 of the piston running surface 2. The diameter D4 of the ledge 8 is not greater than the diameter D1. The ledge reduces the leakage area at the gap in the piston-ring 5. The flank 7 may be chromium plated except in the region of the ledge 8.
Patent GB-604258-A (GB)
Title: Improvements in or relating to apparatus for supplying electric current to a load, for example, a welding load
IPC: B23K11/26
Filed: 1945-12-14
Abstract: 604,258. Condenser arrangements ; controi systems for consumption apparatus. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Dec. 14, 1945, No. 33912. Convention date, Aug. 19, 1944. [Class 38 (iv)] In an energy storage welder of the 'capacitor discharge type, the charging means for the capacitor is rendered inoperative during the discharge period of the capacitor, by means responsive to the discharge current. Closure of circuit breaker 21, Fig. 1, in the A.C. supply 5, completes a charging circuit 7 for the variable condenser 3 through rectifier valves 25, 27 and also effects a supply to the full-wave rectifier 141 in the circuit of an amplifying valve 149. Subsequent closure of manual switch 161 operates a timer such as a synchronous motor driven commutator 167 and also effects through a hydraulic pressure system, the engagement of electrodes 15, 17 with a workpiece 19 and the closure of a contactor 185, which renders conductive, a firing valve 69 associated with a series connected ignitron valve 67. Valve 67 then conducts to discharge the condenser 3 into the primary 9 of the welding transformer 11, through the series circuit including resistor 61, to effect a welding impulse in the secondary 13 and workpiece 19. The current through the resistor 61, acts through the auxiliary transformer 125 to render conductive, an amplifying pentode valve 159, current through which develops a blocking potential across a resistor 55 in the grid circuit of the rectifiers 25, 27. On completion of the weld, when reverse current tends to flow in the welding circuit, rectifier valve 119, renders conductive, a firing valve 99 associated with a shunt connected ignitron valve 87, which latter then allows the series connected ignitron 67 to again become non- conductive and the re-charging of condenser 3 to be initiated, since no current is then flowing through resistor 61. In the arrangement of Fig. 2, not shown, wherein a similar blocking circuit is applied to a " full cycle welder " as disclosed in Specification 585,437, the output of the auxiliary transformer 125 in this circuit is fed through a full wave rectifier. Specification 598,292 also is referred to.
Patent GB-931820-A (GB)
Title: Improvements in or relating to silicon rectifiers
IPC: H01L21/00
Filed: 1961-09-21
Abstract: Plates for use in semi-conductor devices (see Group XXXVI) are formed by sintering a mixture containing 80-99% by weight tungsten, 0-10% gold and 0.2-10% nickel, or a mixture of 70-99% molybdenum, 0-10% gold and 0.2-20% nickel.  A typical plate consisting of 98 parts by weight tungsten, 1 part gold and 1 part nickel is formed by compressing together powders of the individual metals and sintering at 1400 DEG  C. for an hour in hydrogen. Coatings of nickel, gold or silver may be formed on one face of the plate by applying nickel carbonyl powder or silver or gold powder in a binder at some stage before sintering.  Alternatively the materials are applied after sintering and bonded to the plates by reheating in hydrogen.  In an alternative method the mixture of metal powders is prepared by precipitating compounds of the metal from a common solution and reducing the powdered compounds to metal.
Patent GB-196875-A (GB)
Title: Improvements in or relating to cupping glasses
IPC: A61M1/00
Filed: 1922-12-13
Abstract: 196,875. Legrain, L. H. July 19, 1922, [Convention date]. Cupping - appliances. -A cupping glass having a cylindrical extension c is provided with a valve formed by a port d covered with a thin rubber sleeve e. The cupping-glass is evacuated by a pump which screws into the threaded hole g<1> in a socket or cover g fastened to the cylindrical extension c by means of a piece of rubber tubing h.
Patent GB-1117534-A (GB)
Title: Stable solutions of urea formaldehyde condensates
IPC: C07C273/02
Filed: 1966-07-29
Abstract: Aqueous concentrated solutions of urea, formaldehyde and reaction products thereof, having a molar urea to formaldehyde ratio of 1:4 to 1:10 and obtained under alkaline conditions are subjected to acid treatment (pH\sF4) at a temperature between room temperature and 100 DEG  C.; the product is subsequently neutralized (e.g. with CaCO3). Sulphuric acid may be used for the acid treatment. The process may be carried out in a batchwise or continuous manner.  The product has a higher concentration of methylenic linkages derived from formaldehyde (e.g. 20-24%) than resins prepared under alkaline conditions.
Patent GB-411507-A (GB)
Title: Process for the manufacture of organic mercury compounds
IPC: C07F3/10
Filed: 1932-12-02
Abstract: In the preparation of ethers of hydroxyalkylmercuric salts from olefinic compounds, a mercuric oxide, alcohols and acids capable of forming insoluble mercury salts, the contamination of the product with mercuric salts of the said acids is lessened by (1) employing red mercuric oxide or artificially aged mercuric oxide, (2) adding the acid slowly to an alcoholic suspension of yellow mercuric oxide while introducing the olefinic compound, or (3) using in the first place an acid capable of forming a soluble mercury salt and simultaneously or subsequently converting the soluble into the insoluble salt.  Olefinic compounds mentioned are ethylene, propylene, butylene, safrol, cinnamic esters, dihydronaphthalene, styrene or allyl benzene, but such compounds as stilbene and propenylbenzene are not suitable since they are oxidized by mercury oxides.  Of the alcohols which may be used, methyl alcohol, ethyl alcohol, propyl alcohol, cyclohexanol and benzyl alcohol are referred to.  The acids capable of forming insoluble mercury salts are restricted to oxygen-containing acids, of which oxalic, sulphuric, succinic and tartaric acids are specified.  Nitric, formic, acetic, propionic and malonic acids are given as examples of acids capable of forming soluble salts. The products are useful as preservatives, disinfectants, insecticides and fungicides, for immunizing grain, and for pharmaceutical purposes.  Examples are given of the preparation of methoxyethylmercuric oxalate, using methyl alcohol and ethylene; methoxymethylethyl mercuric oxalate, using methyl alcohol and propylene; methoxyphenylethyl mercuric oxalate, using methyl alcohol and styrene, and the corresponding safrol compound, whose probable formula is given; methoxyethyl mercuric tartrate, sulphate and succinate; ethoxyethyl mercuric oxalate, tartrate and sulphate, using ethyl alcohol and ethylene; and benzyloxyethyl mercuric oxalate, using benzyl alcohol and ethylene.  Reference has been directed by the Comptroller to Specification 335,527, [Class 2 (iii)].
Patent GB-521773-A (GB)
Title: Improvements in voltaic gas cell
IPC: H01M8/08
Filed: 1938-11-25
Abstract: 521,773. Batteries. TANFERNA, M. Nov. 25, 1938, No. 34429. Convention date, Nov. 30, 1937. [Class 53] A gas cell has a central chamber a containing an aqueous electrolyte separated by gas-permeable conductive walls b, b<1> from outer chambers d, d<1> through which pass re-. ducing and oxidizing gases respectively. The walls b, b<1> may be of platinum, , palladium, iridium, gold, silver, activated carbon, retort carbon, or graphite. The gases may be oxygen, hydrogen, chlorine, carbon monoxide, or air.
Patent GB-1441952-A (GB)
Title: Spray washing arrangements
IPC: B60S1/60
Filed: 1973-07-19
Abstract: 1441952 Cleaning lamp glasses WESTFALISCHE METALL INDUSTRIE KG HUECK & CO 19 July 1973 [20 July 1972 21 July 1972 3 Nov 1972] 34524/73 Heading A4F [Also in Divisions B2 E2 and F2] A washing device for vehicle head-lamps and the like is provided with a nozzle 5 for directing cleaning liquid from a reservoir 2 on to a headlamp 6, the nozzle 5 comprising a body having a through-bore defining an outlet 12 and a spinner element 8 which is rotatably mounted in the through-bore and which has a through-bore 9 and helical grooves 10 on its peripheral surface. In use, cleaning liquid supplied under pressure to the nozzle causes the element 8 to spin and direct the liquid in the form of a conical spray from the outlet 12. The nozzle 5 may be mounted on a bumper bar 27 of the vehicle being a bi-furcated spring clip 29, Fig. 6, the bi-furcated end engaging a groove 28 on a projection 25 of the nozzle body 25 while a hole of the spring clip is arranged to accomodate a further projection 26 from the nozzle body 24.
Patent GB-773623-A (GB)
Title: Improvements in or relating to telephone systems
Inventor: CALVIN JOHN LESLIE
IPC: H04M3/523
Filed: 1954-11-30
Abstract: 773,623. Exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Sept. 29, 1955 [Nov. 30, 1954], No. 34603/54. Class 40 (4). In an arrangement in which waiting calls coming in on trunk demand circuits are connected in succession to trunk operators' positions over finders, the demand circuits DRS as they are seized become associated with queue link circuits QLC which are controlled by common equipment CQC to form the demand circuits into a queue, the circuit at the head of the queue being marked in the finder multiple. There may, for example, be 200 demand circuits divided into four groups of 50, each group being served by 5 queue link circuits and each queue link circuit being first choice to a different subgroup of 10 demand circuits. Upon seizure of a demand circuit DRS, start wire ST is earthed and an idle queue link circuit QLC becomes associated over switch DH, whereupon relay KD pulls up. Switch QF then hunts for the first vacant queue position indicated by earth on one of leads C1 ... 10. Relays KQ, CO pull up followed by KR in the demand circuit, earth being connected to the corresponding K lead. Ten queue positions are provided, and the first vacant one is indicated by the operated relay in a relay chain CA ... CK. Initially relay CA is operated, and the next relay is connected up by the operation and release of CP each time a K lead is earthed. When all ten queue positions are occupied, however, CP cannot release and any further calls queue in the last position. The head of the queue is indicated by the operated relay in a relay chain MA ... MK. If the queue position indicated by CA is the only one occupied, for example, relay MA energizes to earth on lead K1 and marks the finder multiple over lead M1. Relays LA, LB light calling lamps and disconnect the remaining chain relays from the K leads. When the call is connected by a finder to an operator's position, the relapse of KR removes earth from lead K1 and relay MB (previously short-circuited) energizes in series with MA which falls back and opens the series circuit, so that MB holds only if there is a locking circuit to earth on lead K2 provided by the next call, which thus assumes the head of the queue.
Patent GB-1170814-A (GB)
Title: Improvements in or relating to the Curing of Pastes
IPC: F27D11/02
Filed: 1967-07-28
Abstract: 1,170,814. Drying apparatus; continuous kilns. INTERNATIONAL BUSINESS MACHINES CORP. 28 July, 1967 [15 Aug., 1966], No. 34759/67. Headings F4B and F4G. [Also in Division H1] An oven for curing paste resistors heats the resistors at a first relatively high rate of temperature increase in a first zone of the oven, then at a second, lower rate, in a second zone, then holds the temperature at the firing temperature in a third zone, then allows the resistors to cool in a fourth zone. The first rate, e.g. at 30-60 C./min. is through a temperature range where a high rate will not cause damage, e.g. up to the softening temperature (e.g. 650 C. for glass-based resistors), and the second rate is 10-25 C./min. The oven has a conveyer belt 22 travelling at a uniform speed and a series of heating elements 26 controlled by controllers 30 responsive to signals from thermocouples 28. The resistor paste comprises glass frit, a metallic conductor (see Division H1) and an organic vehicle which is burnt off during firing.
Patent GB-1320802-A (GB)
Title: Multineedle quilting machines
IPC: D05B11/00
Filed: 1970-07-17
Abstract: 1320802 Sewing padded work MECA-MECCANOTECNICA CASSANESE SNC 17 July 1970 [19 July 1969] 34770/70 Heading D1G A machine, for sewing padded work consisting of a foundation material 32, an upper material 33 and parallel longitudinal canes of material 34 there between, comprises a conveyor 39, 40 moving the foundation material towards the needles 17, a device 37, 38 cutting the material 34 into canes, a device 'A' shaping the upper material over the canes and a plurality of feeding feet 24. The device A is that described in Specification 1320374. A device C cuts the quilted material transversely to the line of feed. The main driving motor 6 is provided with a known expanding pulley 7 and is mounted on a board 4 pivoted at 5. Movement of a handwheel 8 varies the driving speed of the machine.
Patent GB-971485-A (GB)
Title: Liquid fuel combustion apparatus
Inventor: KAY ARTHUR SELWYN
IPC: F23R3/08
Filed: 1959-10-14
Abstract: 971,485. Gas turbine &c., combustion chambers. JOSEPH LUCAS (INDUSTRIES) Ltd. Jan. 11, 1961 [Oct. 14, 1959], No. 34773/59. Heading F1L. In liquid fuel combustion apparatus of the kind having an air jacketed flame tube comprising a plurality of axially offset and concentric tubular parts, the adjacent free edges only of the parts are corrugated and secured to an annular ring 6 overlapping the adjacent ends.
Patent GB-1502646-A (GB)
Title: Mould for making and holding working models for the manufacture of dental prostheses
IPC: A61C13/34
Filed: 1975-08-21
Abstract: 1502646 False teeth; moulding working models G HAKER 21 Aug 1975 [22 Aug 1974] 34816/75 Heading B5A A mould 10 in which a plaster working model of a dental prosthesis may be cast from an impression of the jaw, and in which the model, after removal from the mould and cutting into several pieces, may be exactly reassembled and securely held with the pieces in their correct juxtaposition has upwardly diverging walls 11 provided with a flange 13 at the top for engagement with retaining elements 19 and 20 (which are themselves releasably attached by means of hook 26 and projection 23), and with vertically-extending ribs 16 on the interior of the wall. In the illustrated embodiment, an upwardly-projecting rib 15 is provided on the floor of the mould, and the ribs 16 extend across part of the floor and up the outer wall of this rib, thus improving the keying between the model and the mould.
Patent GB-170780-A (GB)
IPC: F16B37/14
Filed: 1920-12-09
Abstract: 170,780. Morison, D. B. Dec. 9, 1920. Nuts.-A nut 1 having an upstanding rim 2 around an annular recess 3, is united to a cap 4 by means of a die 5 which presses the rim 2 into engagement with the cap.
Patent GB-858799-A (GB)
Title: Improvements in variable speed-v-pulleys
IPC: F16H63/06
Filed: 1956-01-26
Abstract: 858,799. Expanding wheel gearing; screw- and-nut gearing. LOMAS, A. E. Jan. 14, 1957 [Jan. 26, 1956], No. 34857/60. Divided out of 858,797. Classes 80 (2) and 80 (3). In an expanding V-pulley one flange is moved axially by corresponding movement of a first sleeve, a second concentric sleeve a selectable two position connection with the first sleeve such that retardation of the second sleeve relative to the first sleeve can produce axial motion of the first sleeve in either sense. A brake 14 retards an outer sleeve 19 carrying two sets of spring-loaded toothed blocks 89a, 89b. The blocks can be alternately engaged with oppositehanded threaded portions 8a, 8b on an inner sleeve 8, rigid with a sliding flange 1b of the pulley, by axial movement of a control sleeve 94 to produce axial movement of the pulley flange. A dog clutch 50, 51 is used to lock the sleeve 19 to the pulley shaft 2 to prevent .unwanted axial movement during normal running. In a modification, Fig. 2 (not shown), the dog clutch is replaced by a slipping friction connection between the sleeve 19 and the shaft 2.
Patent GB-777236-A (GB)
Title: Improvements relating to ceramic-to-metal seals
Inventor: WHITMORE EDWARD JOHN
IPC: C04B37/02
Filed: 1955-12-06
Abstract: 777,236. Soldering. FERRANTI, Ltd. Dec. 6, 1955, No. 34895/55. Addition to 746,963. Class 83 (4). [Also in Group XXXVI] A metal member is sealed to a highly-refracting ceramic member by applying to the ceramic surface a film consisting of a mixture of at least two finely-divided interstitial metallic carbides suspended in a liquid, the major constituent comprising a metal which is comparatively inert towards ceramics and the minor constituent comprising a metal which is reactive towards ceramics, firing the film in an atmosphere containing hydrogen to cause the formation of a strongly-adherent layer consisting of the at least partially decarbonized inert constituent bonded to the ceramic by the products of the reaction between the reactive constituent and the ceramic, forming on the layer a metallized surface which is wettable by a brazing material, and brazing the metal member thereto. The mixture may be of tungsten and titanium carbides, containing from 10-25 per cent of the latter os may comprise a solid solution of the constituentr such as a stable form of iron-tungsten &c. carbide, which, where the ceramic has a high alumina content, may have about 10 per cent titanium carbide added. The metallized surface may be formed by plating or sintering and may comprise iron, nickel or cobalt, and may have a second metal such as copper, silver or gold applied thereto to assist the brazing.
Patent GB-176866-A (GB)
Title: Improvements in receptacles for containing opened tins or jars, or loose cigarettes,tobacco, sweetmeats and the like
IPC: A24F23/00
Filed: 1920-12-11
Abstract: 176,866. Gardner, A. C. Dec. 11, 1920. Addition to 160,878. Ash-trays.-A receptacle for tobacco, sweetmeats &c. has a removable ash-tray c resting on an external ledge a'.
Patent GB-1345817-A (GB)
Title: Device for scanning or reproduction of images
IPC: H04N1/024
Filed: 1971-07-26
Abstract: 1345817 Facsimile transceiver ISKRA-ZAVOD ZA AVTOMATIZACIJO V ZDRUZENEM PODJETJU ISKRA 26 July 1971 [27 July 1970] 34948/71 Heading H4F In a facsimile transceiver in which an object is scanned to derive a video signal for transmission or in which photo-sensitive paper is scanned by a modulated light beam to reproduce an image of an object, a coherent light beam from a laser 4 is line scanned across the image plane 21 upon which the object or photosensitive paper is disposed by means of an oscillating mirror 7 and a pair of parallel prisms 9 and 10 having opposed mirror surfaces 11 and 12 between which the light beam makes a plurality of passes, the light beam being finally deflected on to the image plane by an inclined mirror surface 13 on prism 10. The scanning system includes a focusing optical lens system 6. For reproduction the laser is modulated directly in accordance with a received video signal or a modulator 5 is included in the laser path. To effect frame scanning the platform 2 on which the optical elements are mounted is moved by a device 3 with respect to the image plane 21 (glass plate) which forms part of the transceiver's outer casing 1. For transmission the reflected beam from the object is reflected from a mirror 16 which is oscillated in synchronism with mirror 7 and focused by a collective lens 18 on to a photoelectric detector 19. Oscillating mirror 16 ensures that the light beam is always incident at the same angle on lens 18 and thus at the same point on the sensitive surface of detector 19. An optical element 15 having spatially varying transmissivity is included in the reflected light path before oscillating mirror 16 to compensate for the variation in the spatial angle of the incident light beam on lens 18 due to the variations in path length of the light beam as it scans across the flat image plane. Element 15 may comprise a semi-transparent screen of spatially varying transmissivity or a shield with a spatial array of different sized apertures.
Patent GB-928782-A (GB)
Title: Improvements in apparatus for reading code perforations in perforated media
Inventor: LLOYD MARTIN HERBERT
IPC: G06K7/02
Filed: 1961-09-28
Abstract: 928,782. Sensing code perforations. CREED & CO. Ltd. Sept. 28, 1961, No. 34958/61. Class 106 (1). In an apparatus for reading code perforations in a record medium, air is applied to the medium at a pressure above that of the atmosphere and, where code perforations are present, passes through to pressure-sensitive transducers which give electric output signals representing the code perforated in the record medium. A compressor 1 supplies air via a chamber 2, with distribution plate 4, to tubes 5, 5A, the outlets from which are controlled by a perforated reciprocating or oscillating plate 13 synchronized with the means for positioning the record medium 10. When the compressed air is released by the plate 13 it passes through any code perforations 9 which may be present in the record medium 10 and into corresponding tubes 6, 6A, incorporating pressure-sensitive transducers 7. In a modification the compressed air is fed to the perforated control plate 13 through a common " fishtail " duct.