baber/WOPTO huggingface dataset:
Patent GB-686502-A (GB)
Title: Improvements relating to two stroke internal combustion engines
IPC: F02B25/00
Filed: 1951-04-06
Abstract: 686,502. Two-stroke engines. MECCANICA VERGHERA SOC. r.l. April 6, 1951 [Feb. 24, 1951], No. 8088/51. Class 7 (ii). In a two-stroke internal-combustion engine with scavenging carried out by two separate streams of fuel-mixture supplied by two separate feeding cylinders which suck the mixture directly from the carburetter (not shown), and without the addition of further air pump it into the two engine intake ports, each feeding piston has its connecting rod 11 driven by an auxiliary shaft connected to the main driving shaft through gearing having a 1:1 ratio. The feeding pistons draw lubricantfree fuel-mixture directly from the carburetter and supply it transversely to the main cylinder 2 through tubes provided with automatic valves 7; the feeding cylinders have a combined displacement equal to or greater than that of the main cylinder.
Patent GB-116160-A (GB)
Title: Improvements relating to Machines for Carbonating or Aerating Liquids.
IPC: B01F3/04
Filed: 1917-06-08
Abstract: 116,160. Bruce & Co., C. W. W., and Jones, E. S. June 8, 1917. Multiple - delivery piston pumps; combined liquid and gas pumps; regulating delivery by closing suction valves; valves and valve seats, arrangement of.-Apparatus for aerating liquids comprises one or more pumps a, b into which liquid is drawn on the suction stroke through the valves w<5>, j and air-vessel z, and air or gas under pressure is admitted through an inlet s when a valved part t in the piston registers with the inlet. In a modification, the inlet s communicates directly with the barrel when the piston clears it. The gas pressure closes the valve j, so that, during the remainder of the suction stroke, the level of the liquid falls in the cylinder. During the delivery stroke, the gas above the liquid is compressed and saturates the liquid. In another form, the gas is admitted first to a chamber provided with a sliding member controlling a series of ports in the barrel so that the time of closing the valve j and the amount of liquid drawn in may be varied. The .suction and delivery valves j, k and their boxes o, p and springs m, n are interchangeable.
Patent GB-125265-A (GB)
Title: Improvements in Electric Stamping or Pulverizing Machines.
Inventor: BASEBE ARTHUR CECIL
IPC: B02C1/14
Filed: 1918-05-16
Abstract: 125,265. Basebe, A. C., and Smart, R. E. May 16, 1918. Stamps, ore and like. - Relates to stamps in which the operative and return strokes are effected by electric and spring means respectively, and comprises the provision of electric means for rotating the stamps. In the stamp shown, the stem e of the stamp f passes through a solenoid i and is provided with a spider m, having depending tubes n which pass over guide-posts o and are surrounded by returning-springs q. The stem is provided with a core k, and the solenoid is enclosed in a casing h and provided with a core j. The circuit, of the solenoid is closed and broken when the stamp is in the upper and lower positions respectively. For rotating the stamp, the upper part t of the stem is provided with a number of shoes s which are arranged in different angular positions and pass between the pole-pieces y of an electro-magnet r. The rotating-means may be arranged to operate during either the operative or the return stroke or during both strokes. The stamp works in a mortar b which may be provided with a renewable part g. The stem is supported on the spider by ball bearings u and passes through a guide d. In a modification, the stamp is returned by blade springs connected to the top of the stem, and the axial solenoid i is replaced by one or more solenoids which are spaced from the axis.
Patent GB-309537-A (GB)
Title: Improvements in and relating to pistons for internal combustion engines
IPC: F02F3/10
Filed: 1929-03-13
Abstract: 309,537. Weiss, J. April 12, 1928, [Convention date]. Pistons, cooling. - To decrease the expansion of a piston of aluminium &c., the heat from the piston-head is in part conducted to the gudgeon-pin bosses and in part radiated to the interior by a coating or lining of copper or other metal. A copper tube a may be embedded in the piston during casting, apertures e being afterwards cut through the wall a<2> and through the tube, between the gudgeon-pin bosses, to permit the circulation of air and oil from the interior of the piston. The walls a<1> are thickened in the neighbourhood of the gudgeon-pin bosses c to promote the flow of heat to the bosses, while the walls h, f are made thinner than the crown b to obstruct the flow of heat to the skirt. i.
Patent GB-346942-A (GB)
Title: Improvements in or relating to luminous circuit charts
IPC: H02B15/00
Filed: 1930-03-14
Abstract: 346,942. Charts. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. March 14, 1930, No. 8317. Convention date, March 16, 1929. Addition to 283,893 and 294,225, [both in Class 146 (ii), Stationery &c.]. [Class 146 (ii).] In a luminous electric-circuit chart according to the parent. Specification, the translucent bodies 1, Fig. 2, filling the slots 2 are made hollow, preferably by pressing from a thin sheet of plastic material such as that known under the registered Trade Mark "Cellon," and may be retained in position by clips 3 engaging lateral flanges 4 or by the use of adhesives. Fig. 3 shows a representation of a rectifier, pressed from a disc and having upstanding translucent parts 5, the rest being blackened on the rear side. Colouring matter may be applied externally to the translucent parts. Specification 309,983, [Class 3 (ii), Advertising &c. other than by moving &c.], is referred to.
Patent GB-823843-A (GB)
Title: Improvements in and relating to gaseous electric discharge devices
Inventor: ACTON JOHN REGINALD
IPC: H01J17/24
Filed: 1955-03-22
Abstract: 823,843. Cold-cathode tubes. ERICSSON TELEPHONES Ltd. March 15, 1956 [March 22, 1955], No. 8320/55. Class 39(1). A cold-cathode tube, which may be provided with a trigger electrode for initiating the discharge, with a gas filling composed of at least 98% helium, at a pressure of 20 to 600 mm. Hg, e.g., and with the cathode comprising a getter container whose surface constitutes at least 5%, e.g. 15%, of the whole surface of the cathode, the getter having a work function of 3À5 electron volts or less, is made by pumping the envelope to a pressure not below 0À002 mm. Hg. before admitting the gas filling and thereafter volatilising the getter. The getter, e.g. barium, takes up residual oxygen and is a material whose work function is decreased, or at least not greatly increased by combination with oxygen. The getter container may be of iron, copper or nickel, and one or more containers may be mounted across a U-shaped nickel cathode wire. The volatilised barium deposits, on the cathode and on the getter container. In one example the envelope is evacuated to a pressure of 0À005mm. Hg. and the helium is admitted to a pressure of 130mm. Hg. In a diode-triode tube, Fig. 5, the triode section consists of cathode 21, with getter container 24, anode 27 and trigger electrode 26 and the diode section of cathode 29 and anode 28 providing a permanent source of photons and ionised particles. Electrode 31 is spare. The helium filling is at 85 or 100 mm. Hg. In another embodiment the triode and diode sections are at opposite ends of the envelope and the filling is at 150 mm. Hg. Examples of electrode spacings are also given.
Patent GB-165196-A (GB)
Title: Means for employing the propelling energy of a vehicle for other power purposes
Filed: 1920-03-20
Abstract: 165,196. Smith, P. F., Dine, E. H., and Stocks, F. R. March 20, 1920. Driving auxiliary parts and external machines. -In an electrically-propelled vehicle, the motor shaft 3 is adapted to drive either the vehiclepropelling shaft 22 or a belt-pulley shaft 28 by means of a sliding toothed wheel 1. This wheel is slidably keyed on the motor shaft and can engage either a spur-wheel 32 on the shaft 28 or an internally-toothed wheel 21 on the shaft 22, forming with the latter a clutch to coupie the shafts 3, 22 together. A hand-lever is provided adjacent to the driver's seat to slide the toothed wheel 1.
Patent GB-725721-A (GB)
Title: Endless saw for cutting stone and like hard material
IPC: B28D1/12
Filed: 1953-03-26
Abstract: 725,721. Sawing stone &c. SONAPAR SOC. DE PARTICIPATION SOC. ANON. March 26, 1953 [March 27, 1952], No. 8362/53. Class 124. In a saw for cutting stone and like hard material comprising an endless cable 1 with cutting elements releasably  supported thereon, the cutting elements each include a cutting tooth 2, a resilient cable-gripping portion, and a guiding portion 4 slidably engagable in guide means such as that provided by guide strips 7 and 8. Each element may have a convex rear surface 5 and a concave front surface 6 to allow flexing of the cable over guide pulleys, the portions 4 engaging packings in the grooves of the pulleys to effect driving of the saw. The teeth 2 of the elements may be arranged alternately at either side of the cable, and carry hard metal inserts such as of tungsten steel. Means for moving two guide pulleys relatively to adjust the tension of the cable are described and illustrated.
Patent GB-552387-A (GB)
Title: Improvements in or relating to refrigerating apparatus
IPC: F25D31/00
Filed: 1941-07-02
Abstract: 552,387. Freezing apparatus. FROSTED FOODS, Ltd.' (General Foods Corporation). July 2, 1941 No. 8373. [Class 29] The liquid refrigerant supply and vapour outlet connections to the several superposed spaced movable plates 11 of apparatus for quick freezing comestibles, such as that descibed in Specifications 345,618 and 366,373 are arranged so that liquid seals are formed in the supply conduits to resist the back flow of vapour therein, while the vapour outlets are unobstructed. Liquid refrigerant flows from a condenser 32, Fig. 1, in a base compartment of the apparatus and through a float valve into a reservoir 14 at the top. A liquid feed pipe 16 extends downwards from the reservoir and is connected with the several plates by flexible hoses 22 which sag or dip below the plates in all positions of the latter. The vapour is led from the plates by other flexible hoses 26, Fig. 2, with no substantial sag, which separately connect with pipes 27 extending upwards into the vapour space of the reservoir 14. The ends of the pipes 27 are cut away at the sides as shown in Fig. 7 and provided with sloping tops 34, and disposed so that the openings are staggered along the row of pipes. An inclined baffle 37 with openings in its lower part is arranged in the reservoir adjacent the liquid feed connection and in a position to prevent splashing of liquid into the vapour suction connection 29 of the reservoir, also formed with a cut-away side opening 36. The liquid feed pipe 16 is provided with a drain valve 21, which may be connected with an overflow pipe from the reservoir leading to a low pressure receiver. In one modification the four lowest plates are supplied from a branch of the feed pipe 16 extending horizontally through the base compartment, while in a further modification the lower end of the feed pipe is formed as a manifold casting from which risers extend for connection to hoses of the three bottom plates.
Patent GB-902485-A (GB)
Title: Improvements in or relating to the electrolytic production of aluminium
IPC: C25C3/06
Filed: 1959-03-11
Abstract: 902,485. Electrolytic production of aluminium. KAISER ALUMINUM & CHEMICAL CORPORATION. March 11, 1959 [March 28, 1958], No. 8432/59. Drawings to Specification. Class 41. Aluminium is obtained by electrolysis of an electrolyte containing aluminium fluoride and sodium fluoride and having a lithium content equal to that resulting from the addition of lithium fluoride in an amount of from 2 to 20% by weight of the electrolyte, the cell being operated with a voltage drop across it at least substantially equal to that employed with no lithium-containing compound in the electrolyte. The lithium may actually be provided as lithium fluoride, lithium cryolite, lithium aluminate, lithium carbonate or lithium hydroxide. The cathode may be surfaced with the boride or nitride of titanium, zirconium, tantalum or niobium. Specifications 800,092 and 802,905 are referred to.
Patent GB-349189-A (GB)
Title: Process for the manufacture of recording media for rendering visible signs or symbols in electro-chemical fac-simile and picture recording apparatus
IPC: B41M5/20
Filed: 1930-03-15
Abstract: 349,189. Electrolysis. BAUSCH, V., 75, Potsdamerstrasse, Berlin, BAUSCH, T., BAUSCH, V., and BAUSCH, F., (trading as SCHOELLER & BAUSCH, F.), Neu-Kaliss, Schwerin, Mecklenburg, Germany. March 15, 1930, No. 8460. Convention date, March 16, 1929. [Class 41.] Recording-sheets, for use in copying-telegraph receivers with electrochemical marking action, are impregnated with a compound of iodine with an element of valency greater than one, for example cadmium or zinc.
Patent GB-577091-A (GB)
Title: Improvements in and relating to electrical contact elements
IPC: H01H1/023
Filed: 1944-05-04
Abstract: An electrical contact element, such as a brush contact or a movable bearing element, e.g. a rotating slip-ring, commutator, or shaft, particularly for use in dry or rarefied atmospheres, consists of a graphitic material and zinc oxide.  Preferably, the contact contains a metal of high electrical conductivity, and may be made of a pressed and sintered mixture of finely-divided metal, such as silver or copper, and graphitic material in approximately equal proportions, and zinc oxide in about 5-30 per cent (preferably 10-20 per cent) by volume.  The compressed mixture, enclosed in powdered carbon to prevent reduction of the zinc oxide, is fired at a temperature of 675-750 DEG  C.  In an example, a mixture of 40 per cent copper, 40 per cent carbon and 20 per cent zinc oxide is used.
Patent GB-417431-A (GB)
Title: New or improved device for the disinfection of microphones and receivers of telephonic, wireless transmission and like apparatus
IPC: H04R1/12
Filed: 1934-03-19
Abstract: 417,431. Sanitary and hygienic devices. COSTA, J. D'O., 6, Rua Afco Marquez de Alegrete, Lisbon. March 19, 1934, No. 8600. Convention date, Feb. 1. [Class 40 (iv).] Microphones or telephone or like receivers are disinfected by a device adapted to be fitted between the body of the microphone or receiver and the cover thereof and comprising a member A having two concentric rings B, C forming an annular chamber adapted to contain a disinfecting substance, the inner wall C being perforated at D and the chamber being closed by the mouthpiece or ear cap of the microphone or receiver. The Figure shows the invention applied to the microphone and receiver of a telephone handset. Reference has been directed by the Comptroller to Specifications 1493/09, 2215/13, and 157,614, [all in Class 40 (iv)].
Patent GB-1051990-A (GB)
IPC: D01H5/26
Filed: 1964-03-02
Abstract: 1,051,990. Drawing arrangements; sliver guides; stop motions. SOM ANDREANI & C. OFFICINE MECCANICHE E FONDERIE. March 2, 1964 [Sept. 3, 1963; Dec. 11, 1963]. No. 8638/64. Headings D1D and D1N. Two series of slivers are passed through independent drawing heads, united and passed vertically through a further drawing head. The arrangement illustrated in Fig. 1 may be modified by having the initial drawing heads inclined and the drawing belts 12 may be passed over a third roller permitting adjustment of tension, Fig. 8 (not shown). As the slivers are drawn from cans they may be passed through a pair of rollers and over a parabolic diverter, Fig. 7 (not shown), which allows the direction of movement to be changed without superposition of the slivers. Alongside the pair of rollers a photo-cell is mounted that is associated with mechanism to stop the machine on sliver breakage. Further stop motions are provided; one for the prevention of tangles and wrapping-up of fibres is coupled with a roller weighting arrangement, Figs. 9 and 10 (not shown) and consists of a spring-loaded pusher urged against a roller journal in a manner to close an electric circuit on excess movement of the journal, and the other includes a condensing funnel, Figs. 11 and 13 (not shown) that is moved when thickenings are present in the sliver to close an electric circuit. A twopart guide funnel is associated with the condensing funnel and magnetically mounted for ease of removal, Fig. 11 (not shown). The support for the condensing funnel may carry stationary bearers for rollers, Fig. 12 and 14 (not shown).
Patent GB-1465672-A (GB)
Title: Methods of making semiconductor diodes
IPC: H01L21/31
Filed: 1974-02-22
Abstract: 1465672 Semi-conductor devices EMI Ltd 22 Feb 1974 [22 Feb 1973] 8705/73 Heading H1K In a method of making a semi-conductor diode, e.g. a silicon photo-diode array vidicon having a diode area of 1-20 mm<SP>2</SP>., a number of p-n junctions extending over the desired area of the diode are formed in a semi-conductor slice, anode areas of any defective p-n junctions are preferentially coated with an electrical insulator by using the excessive electrical leakage of a defect, and an ohmic contact is thereafter formed over the whole of the diode area to contact the remaining non-defective diodes with a further ohmic contact being provided on the other diode face. Boron may be diffused into an n-type silicon slice to form a mosaic of p-n junction diodes. On the opposite face of the slice phosphorus is diffused to form the cathode contact. Defective mosaic anodes are anodized in a sodium sulphate solution to form an oxide coating on these defective anode areas. A contact, e.g. of gold, is formed over the anode surface to connect the low-leakage, non-defective diodes in parallel.
Patent GB-1029230-A (GB)
Title: Derivatives of 1,3,3-trimethyl-spiro (2'h-1'-benzopyran-2',2-indoline)
IPC: G03C1/685
Filed: 1965-03-01
Abstract: The invention comprises the photochromic compounds of formula <FORM:1029230/C4-C5/1> where R is H or MeO (see Division C2).  These compounds are used in light filters in acryloidtoluene films, and absorb at 450-550 m.p., with a half-life of 5 seconds.ALSO:The invention comprises the compounds <FORM:1029230/C2/1> where R is H or MeO, and their production by reacting 1,3,3 - trimethyl - 2 - methyleneindoline with 4,6-dimethoxy- or 4-methoxy-5-nitrosalicylaldehyde in ethanol.  The starting nitro compounds are prepared by methylating 4-hydroxy- or 4,6-dihydroxy-salicylaldehyde to the corresponding 4- or 4,6-methoxy compounds, and nitrating the latter.  The compounds of the invention are photochromic and are used in light filters (see Division G2).
Patent GB-497525-A (GB)
Title: Methods for imparting different colourations to respective areas of a metallic surface
IPC: B44D5/00
Filed: 1938-03-22
Abstract: 497,525. Ornamenting metals. MARX, L., and DAMIEN, M. March 22, 1938, No. 8842. Convention date, March 22, 1937. Drawings to Specification. [Class 93] Designs are produced on metals, such as aluminium or alloys thereof, or copper, by protecting parts of the surface by means of masks, stencils, or coatings, sandblasting the exposed parts, producing an oxide coating on the whole or parts of the surface, and then colouring the coating, the colours formed on the sandblasted portions contrasting with those on the remaining parts. Before colouring, parts of the surface may be protected by masks &c. ; or, after colouring, parts of the coloured surface may be protected, the colour removed from the remaining parts, e.g. by forming an oxide-layer thereon, and those parts recoloured. Also, sandblasting may be applied before or after any one of the colouring &c. operations. The oxide coating may be formed by electrolysis using acids or alkalies, and colouring may be effected by applying a basic organic dye fixed by a mordant, or by double decomposition on the oxide layer of a coloured insoluble inorganic compound, e.g. by treatment with a solution of lead acetate and potassium bichromate. Also, a coloured metallic oxide may be precipitated in the aluminium layer by treatment with a metallic compound and a solution of an oxidizing-agent. The sandblasting may be combined with other methods of surface treatment such as cutting, stamping, hammering, dyeing, embossing, turning, or moulding. Specifications 387,806, 391,903, 401,270, 477,286, and 483,776 are referred to.
Patent GB-330030-A (GB)
Title: Carburettor control for internal combustion engines
IPC: F02N99/00
Filed: 1929-03-19
Abstract: 330,030. Douglas Motors, Ltd., and Douglas, J. March 19, 1929. Spray carburettors, - A strangler valve 17 located in the air intake of an automatic carburettor, is kept closed at starting and is adapted to be opened by the engine governor so as to remove the strangling effect as the engine speed increases. The valve is located at the mouth 16 of an elbow piece 15 inserted in the air inlet 14. It is urged towards its closed position by a spring 21, and is opened by an arm 11 of a lever the other arm 8 of which is connected through linkage 9 to the governor. A part 10 of the arm 11 may actuate the carburettor throttle 2 after it has moved the valve 17, the heads 12, 20 being adjustable to permit of this. The air inlet for starting and slow running is not shown. In a modification, the valve 17 does not wholly close the inlet 16, thereby providing an air inlet for starting.
Patent GB-287571-A (GB)
Title: A device for rendering visible signs, indicators or the like
Filed: 1928-03-23
Abstract: 287,571. Bergner, A. March 24, 1927, [Convention date]. Wall lamps. - In an internally illuminated house number plate, an opening o fitted with a glass or celluloid pane p is provided at the bottom to allow the lamp to illuminate the entrance to the house.
Patent GB-1426161-A (GB)
Title: Flowing-gas laser apparatus
IPC: H01S3/03
Filed: 1974-02-27
Abstract: 1426161 Lasers AVCO EVERETT RESEARCH LABORATORY Inc 27 Feb 1974 [9 March 1973] 8973/74 Heading H1C To minimize atmospheric contamination of a gaseous active medium repeatedly circulated through a gas discharge region containing an optical resonator and electric field electrodes, the gas circulating arrangement 48, the electric field electrodes 36, and the resonator 28, are mounted within a single housing 12 sealed from atmospheric pressure and evacuated or pressurized to match the gas pressure in the gas discharge region. The gas, which may be Ar, Xn or Kr, or a mixture of CO 2 , and He, is circulated by a blower 60, and passes through an accelerating nozzle 62 into the gas discharge region for ionization by an ionizer 22 to produce a discharge between the field electrodes. The circulated gas is cooled by a heat exchanger coupled to a coolant source extemally of the housing. The housing includes an aerodynamic window 46 for the laser radiation and has sealed end doors 14, 16. The atmosphere within the housing is pump evacuated through a duct 50, and any loss of the circulated active medium from the gas discharge region is made up through a gas supply duct 54. In a modification, Fig. 2 (not shown), the ionizer is secured on the external surface of door 14 which includes an aperture for the ionizing radiation.