baber/WOPTO huggingface dataset:
Patent GB-189827-A (GB)
Title: Rotary drills for boring wells and the like
IPC: E21B10/66
Filed: 1921-07-06
Abstract: 189,827. Stokes, J. C. July 6, 1921. Bore-hole apparatus. -In a rotary drill for boring wells and the like, wherein a drill stem detachably receives a bit carrier supporting a pair of movably connected bits, the bits are mounted between legs on the carrier and passages in the legs permit the supply of water to the bits. In the form shown, the drill stem 17 carries a collar 21 with internal projections which convey rotation to bits 39, the latter, when in operative position, resting on a shoulder 18 and engaging the lower side of a wearing-ring 24. The bits have cam grooves 41 engaged by a pivot pin 44 carried by spaced legs 30 secured to a bit carrier C, the legs 30 having internal tapered grooves closed by dove-tailed plates 35, Figs. 3 and 5, to form water passages, the water being supplied through lateral openings 33, and a part thereof passing through apertures 37 directly to the bits; when in its lowest position the carrier C rests on a shoulder 28, and packings 38 prevent the passage of water outside the carrier. When the bits are to be removed, a bifurcated body E carrying pivoted dogs 62 is lowered until the dogs engage a headed pin 52 carried by the carrier C; on raising the body E, the carrier C is also raised and through the action of the pivot pin 44 on the cam slots 41, the bits are first moved inward and then raised through the drill stem; the dogs 62 may be released by lowering a cylinder 71 which engages the outer ends of the doge to effect release of the pin 52. When the bits are to be lowered into operative position, the dogs 62 are replaced by dogs 63, Fig. 3, which are engaged with the pin 52; the carrier C is then lowered through the drill stem and the bits, on engaging the shoulder 18, move upwards relatively to the carrier C and engage and lift a rod 55 which causes a weight 53 to effect release of the dogs 63 from the pin 52.
Patent GB-758577-A (GB)
Title: Process for purifying acrylonitrile from acetylene hydrocarbons
Filed: 1954-06-23
Abstract: Acrylonitrile containing acetylene polymers (such as divinylacetylene and ethynylbutadiene) is purified by effecting selective catalytic hydrogenation of said polymers with a Raney metal or noble metal at temperature from 0 DEG  to 50 DEG  C. in an atmosphere of hydrogen under a pressure of from 1 to 20 atmospheres and separating pure acrylonitrile from the hydrogenation product by fractional distillation.  The catalyst may comprise Raney nickel or cobalt suspended in the nitrile to be treated, or platinum or palladium supported upon an inert stationary carrier in a catalysis chamber. Specification 557,436, [Group IV], is referred to.
Patent GB-1278017-A (GB)
Title: Improvements in or relating to moulding eyeglass frame parts
IPC: B29D12/02
Filed: 1970-04-17
Abstract: 1278017 Moulds for spectacle-frames AMERICAN OPTICAL CORP 17 April 1970 [18 April 1969] 18451/70 Heading B5A A split mould for spectacle frames of flexible, rubbery material has at least one cavity defined co-operatively between the two mould halves, each cavity being upright with its longitudinal dimension vertical, a filling gate at the bottom of the cavity of at least one mould half, a gas vent at the top of the cavity of at least one mould half, means to introduce resin into the cavity and backing means. The mould may be of polyurethane or silicone rubber. It may be made by moulding one half at a time around a model of the spectacle frame.
Patent GB-736998-A (GB)
Title: Improvements relating to conveyor belts
IPC: B29D29/06
Filed: 1952-07-22
Abstract: 736,998. Conveyer belts. GREENGATE & IRWELL RUBBER CO., Ltd., and MARSHALL, D. D. July 8, 1953 [July 22, 1952], No. 18467/52. Class 78 (1). [Also in Group VIII] A conveyer belt comprises a number of plies impregnated with frictioning compositions based on natural rubber or inflammable synthetic rubber-like materials enclosed in a non-inflammable outer covering of non-inflammable synthetic rubber or a mixture thereof with a vinyl chloride polymer or copolymer. The outer covering may comprise polychloroprene alone or mixed with other synthetic rubbers such as butadiene-acrylonitrile or butadiene-styrene copolymers in such amounts as to render the mixture non-inflammable. Specified vinyl compounds include polyvinyl chloride and copolymers of vinyl chloride with one or more vinyl compounds such as vinyl acetate and vinylidene chloride. The examples describe particular compositions for the outer covering. Specification 736,997 is disclaimed.
Patent GB-570054-A (GB)
Title: Forming protective surface coatings on metals
IPC: C23C22/83
Filed: 1943-11-10
Abstract: 570,054. Preventing corrosion. HIGH DUTY ALLOYS, Ltd., and WHITBY, L. Nov. 10, 1943, No. 18667. [Class 123 (i)] [Also in Group III] Metal surfaces, especially magnesium and aluminium base alloys are protected by chemically or electro-chemically forming an absorbent coating to serve as a porous matrix and precipitating a sparingly soluble chromate, e.g. zinc chromate, in the matrix by a double decomposition reaction, using solutions of chromate or dichromate and of a salt of the metal whose chromate is required. The metal with the absorbent coating is dipped into a boiling sodium chromate, rinsed and then immersed into a boiling solution of a soluble salt (other than chloride) of zinc, barium, calcium or strontium. Basic chromates may be similarly formed. The metal may be redipped and finally coated with a clear varnish. Specification 543,726, (Group XXXVI], is referred to.
Patent GB-1183642-A (GB)
Title: Manufacture of Porous Metal Products
Inventor: ASHCROFT THOMAS BRIAN
IPC: C22C1/08
Filed: 1967-08-17
Abstract: 1,183,642. Porous metal products. INTERNATIONAL NICKEL Ltd. Aug. 9, 1968 [Aug.17, 1967; April 19, 1968], Nos. 38036/67 and 18697/68. Heading C7D. A process for the production of a metal replica of a fibrous material comprises so impregnating a natural cellulosic fibrous material with a solution of one or more thermally decomposable metal salts that the solution enters the fibres, drying the impregnated material, and by a single heating in a reducing atmosphere destroying the cellulosic material, decomposing the salt or salts to metal and sintering the resultant metal to produce a coherent metal body having a porosity corresponding to the pores within the fibres as well as to the gaps between them in the starting material. The cellulosic fibrous material may be cotton in sheet form, e.g. woven or knitted cotton or cotton wool, cotton or sisal thread, jute sacking, blotting paper or paper pulp. The metal may be Fe, Co, Ni, Cu, or alloys thereof, or W, Mo, Ag, Au or a platinum group metal, but Ni is preferred and NiCl 2  is the preferred impregnating salt. The heating step is carried out at a temperature of at least 900 C. in which case the heating time does not exceed 60 minutes, but heating at more than 1000 C. for not more than 30 minutes is preferred, the heating in each case being carried out in a reducing atmosphere such as cracked ammonia. A metal plaque may be formed from porous sheets made by the above process, by bonding said sheets by compacting and/or sintering and the plaque may be impregnated to form an alkaline battery plate, e. g. a bonded stack of Ni plates may be impregnated with NI(OH) 2  by conventional methods.
Patent GB-749306-A (GB)
Title: Improvements in or relating to antiparallax devices
IPC: H01J29/89
Filed: 1952-07-25
Abstract: 749,306. Cathode-ray oscilloscopes. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. July 25, 1952 [Aug. 3, 1951], No. 18877/52. Class 40 (7). [Also in Group XX] To avoid parallax when marking, on a surface spaced therefrom, the position of a light spot formed on the screen of a cathode-ray. tube, a thin sheet of partially reflecting material is located optically equidistant between the marking surface and the screen and is of such a thickness that the image is of an object viewed by reflection at its two surfaces are seen as substantially coincident. As shown, the light spot 7 is viewed by the eye 6 directly through the partially light-reflecting sheet 4 and the position of the marking instrument 9 is viewed by reflection in the sheet 4 and may be adjusted to be apparently in coincidence with the spot 7 thereby avoiding parallax. The sheet 4 may comprise several thin sheets separated by annular stays, for example of paper. Where the screen 2 is curved the sheet 4, for example of plastic, may be correspondingly curved. The marking surface 1 may be edge-illuminated.
Patent GB-476156-A (GB)
Title: Improvements in or relating to furnaces
IPC: F02G1/055
Filed: 1937-07-07
Abstract: 476,156. Gas-heating furnaces. NEW ENGINE CO., Ltd., and MALONE, J. F. J. July 7, 1937, No. 18881. [Class 51 (i)] A furnace, more especially for heating gaseous media for use in an engine, has arranged around the periphery of the grate 5 means for supplying air for secondary combustion consisting of an annular space 7, the upper part of which is provided with vanes 9 and directed inwardly so that the air follows a helical path to the outlet flue. A further annular space 11 provided with vanes 13 delivers an insulating layer of inert gases, such as flue gases, over the surface of the furnace walls 2. The walls 2 are lined with curved refractory bricks supported on metal shelves 3 and jointed with a mortar of fireclay. The upper part of the furnace is domed with a central outlet flue for the combustion gases.
Patent GB-1224163-A (GB)
Title: Rotary internal combustion engine
Inventor: GALLAGHER THOMAS
IPC: F02B57/08
Filed: 1967-04-25
Abstract: 1,224,163. Rotary cylinder engines. WILLOW RADIAL ENGINE Ltd. July 24, 1968 [April 25, 1967], No.18894/67. Heading F1B. The stationary casing of a rotary cylinder engine includes an inlet port 27, a port leading to a combustion chamber 28 and an exhaust port 30. Pairs of pistons 14, 15 are inter-connected by a link 18 having arms 22 with follower rollers 23 engaging an eccentric cam track 24, the link 18 being slotted at 21 to surround the link 19 for pistons 16, 17. The crown of each piston is inclined to form a wedge-shaped combustion space 28. A cooling fan 36 supplies air through casing 41 to blow through the rotor side walls, the escaping air being mixed with the exhaust gases. Lubricating oil from a supply pipe 32 is fed through passages 33 in stub shafts 10, 11 to passages 35 in radial arms 8 for lubricating the cylinders. Cooling water is supplied to chamber 44 is the casing.
Patent GB-691935-A (GB)
Title: Improvements in or relating to connecting means for pipes or tubes
IPC: F16L13/08
Filed: 1950-07-28
Abstract: 691,935. Soldering and brazing. MITCHELL, R. J. May 21, 1951 [July 28, 1950], No. 18969/50. Class 83 (iv). [Also in Group XXVIII] In a joint in which the clearance between pipes 2 and a sleeve 1 in which they are to be secured is such as to induce capillary action on solder &c. caused to flow by heat from an annular recess 4 in the sleeve, the flow of solder is assisted by a sleeve 5 which is screwed or otherwise advanced towards the shoulder 1x and forms an integral part of the joint when made. There may be a recess at each end of the sleeve 1 or a single recess 4 communicating with the bore of the sleeve at the other end by ducts 8 parallel to the axis. The pipes abut a shoulder 3 which may be on a separate sleeve 9, Fig. 3, in a counterbore of the sleeve 1, the recess 4 being in a central position outside the sleeve 9. The sleeve 5 is recessed at 10 to accommodate the sleeve 9.
Patent GB-130024-A (GB)
Title: Improvements in or relating to the Driving Bands of Projectiles.
Inventor: CRAIG ROBERT ANNESLEY
IPC: F42B14/02
Filed: 1917-12-21
Abstract: 130,024. Craig, R. A., Moore, H., and Mather, R. Dec. 21, 1917. Projectiles.-Relates to driving-bands made of electrolytic iron, and consists in applying the band to the projectile in the form of a separatelymade strip, tube, wire, &c., instead of depositing it electrolytically in situ, The band A may be applied to the groove prepared for it, by means of a six-jawed power-operated chuck, as shown in Fig. 3. and shaped when in position.
Patent GB-1384947-A (GB)
Title: Process for increasing the mechanical strength of glass or glass- ceramic material
IPC: C03C17/00
Filed: 1972-04-24
Abstract: 1384947 Strengthening glass KOMBINAT TECHNISCHES GLAS ILMENAU VEB 24 April 1972 18990/72 Heading C1M The mechanical strength of glass or glassceramic articles in increased by directing a plasma flame on to the article surface to cause evaporation of volatile constituents therein and then immediately providing a protective layer on the treated surface. The protective layer is produced by causing the surface material of the article to form the layer; applying a material to the article which reacts at the surface to form a layer; or applying material to the surface of the article using an adhesive. Examples of producing the protective layer by the second method include spraying on to the hot glass article tetran-butyl titanate at 600 degrees (to produce a layer of TiO 2 ); trichloro-boronzole (B 3 N 3 H 3 Cl 3 ) at 1200‹-1400‹ C. SnCl 4  at 550‹ C.; polytetrafluoroethylene at 750‹ C.; and a finely ground glass at 1250‹-1350 degrees. A number of examples of glass composition are given.
Patent GB-256045-A (GB)
Title: Improvements in or relating to dynamo electric machines
IPC: H02K13/04
Filed: 1925-07-25
Abstract: 256,045. British Lighting & Ignition Co., Ltd., and Kutton, J. C. July 25, 1925. Commutators; conductors. -The armature conductors 1, 2 of a dynamo-electric machine, for example, the starting motor of a motor-car &c. engine, are brought out from the core so that the outer surfaces 1<a> lie parallel to the axis and constitute commutating surfaces, the ends of the bars being anchored in moulded insulating material 4. The top and bottom bars are joined by a clip 3 and soldered together. The clip may be extended axially to provide a wider contact surface for the brushes, or the radial surface 3, Fig. 3, may constitute a commutating surface. Clips of various forms are described in the Specification.
Patent GB-1491567-A (GB)
Title: Penstocks
IPC: E02B7/28
Filed: 1975-05-06
Abstract: 1491567 Valves SIMON-HARTLEY Ltd 28 April 1976 [6 May 1975] 19037/75 Heading F2V In a penstock having a door 14 slidable within a frame 10 across an opening therein and guided at each side by vertical members 17, 18, at least one of which is resilient, a base invert seal 28 is formed by temporarily compressing each resilient seal and introducing liquid between limit strips 29, 30, and thereafter releasing the compressive force after the liquid has cured. Guide member 17 has a polyethylene strip 21 attached to a rigid strip 19 or is similar to the member 18 which has a polyethylene strip 22 bonded to a foamed neoprene strip 23 containing a compression limiting steel rod 24. The seal 28 is formed of urethane elastomer or rubber retained between unplasticized PVC strips 29, 30. The base of the door has a wedge or L- shape.
Patent GB-1394662-A (GB)
Title: Apparatus for the rapid cooling of a small mass such as a semiconductor cell
IPC: H01L23/427
Filed: 1966-04-29
Abstract: 1394662 Cooling of semi-conductor devices HAWKER SIDDELEY DYNAMICS Ltd 1 May 1967 [29 April 1966] 19071/66 Heading H1K [Also in Divisions F3-F4] A proximity fuse for a missile warhead and sensitive to infra red radiation comprises a semiconductor cell 15 mounted on a copper plate 14 within a vented shroud 11 having a sapphire window 19. A cooling chamber 23 is formed on the rear of the plate 14 by a frusto-conical porous walled member 21 of sintered bronze constituting a heat sink, the rear of the chamber being closed by a heat-insulating bush 22. A layer of felt 24 surrounds the sink 21 and bush 22. Refrigerant liquid is supplied to the chamber 23 by an inner pipe 25 having spray jets 27, the pipe 25 being connected to a refrigerant reservoir through a pipe 29 including an electrically controlled valve (Fig. 3, not shown). An outer pipe 26 encloses an annular space 38 with the pipe 25 and in this space is a heat exchange coil 37 connected through a pipe 36 and an electrically controlled valve to a high pressure air reservoir. The other end of the coil 37 opens into the chamber 23. One end of the space 38 is blocked at 39 and adjacent this block is an orifice 40 permitting the refrigerant to expand into the space 38. In use, to arm the missile, the valve in the pipe 29 is opened (e.g. by a time delay switch or a transmitted signal) and refrigerant sprays into the chamber 23 for three seconds. Then, the valve in pipe 36 opens and simultaneously another valve opens to vent the refrigerant reservoir. Air enters the chamber 23 through the previously cooled coil 37 and the resulting increased evaporation of the refrigerant enhances the cooling effect by inducing supercooling. The air supply flows for ten seconds. The cell 15 may comprise an indium (antimonide patch 16 deposited on a Sintox (Registered Trade Mark) substrate 17.
Patent GB-147107-A (GB)
Title: Improvements in finders for photographic apparatus
IPC: G02B23/14
Filed: 1920-07-07
Abstract: 147,107. Zeiss, C., [Firm of]. April 6, 1915, [Convention date]. Optical systems.-A collimator with a system of sighting marks on a carrier c, Figs. 4 and 5, at the focal plane of the lens b is adapted to a camera as a finder. Either the sighting-marks or the lens may be adjustable vertically and horizontally. The sighting-marks may comprise framing lines e<1>, e<2>, which show the field of view at infinity and other distances, and additional lines e' for use with one component only of the camera lens. The lines are marked so as to appear as rectangles through the viewing-lens. Only half the lens and sighting-mark system may be used, the position of the framing lines showing the field of view seen directly through the upper part. In a further modification, the upper half of the sighting-mark is blackened and each half is provided with a series of circles, Fig. 7, corresponding to the appearance of a spherical balloon of a certain diameter at different distances which are indicated.
Patent GB-962841-A (GB)
Title: Improvements in or relating to the production of unsaturated aliphatic aldehydes
Inventor: BARCLAY JOHN LYNN
IPC: B01J21/00
Filed: 1962-05-18
Abstract: Acrolein and methacrolein are produced by reacting propylene and isobutene respectively at elevated temperature in the vapour phase with oxygen in the presence of an oxidation catalyst comprising antimony oxide alone or in admixture with oxides of other metals as claimed in the parent Specification, the concentration of olefine in the feed being 5-20% by volume and the oxygen to olefine volume ratio is the feed being between 1.1 and 1.6. The preferred catalysts comprise a mixture of the oxides of antimony and tin and/or tin antimonate.
Patent GB-335259-A (GB)
Title: Process and device for the cleansing and discharging of pneumatically conveyed tobacco of all kinds and other materials of similar physical form
IPC: A24C5/39
Filed: 1929-06-21
Abstract: 335,259. Quester, E. June 21, 1929. Pneumatic conveyers.-In a device for pneumatically conveying and cleaning tobacco, cotton, flax, paper threads, hay, tea, &c., the tobacco &c. is carried by a current of air entering at d into a housing containing a rotating sifting-drum b arranged above a discharging bucket wheel a, the current of air passing through the periphery of the drum, together with dust and other light impurities, and out at one end of the drum, while the tobacco &c. falls on to the wheel a. The interior of the drum is fitted with a screen e which exposes only the upper portion of the drum to the air blast, inclined baffles f being fitted within the screen. Regulation of the feed is obtained by an adjustable extension g of the inlet pipe d, bv adjustable valves h admitting air to the housing, and by rotary adjustment of the screen e about the axis of the drum.
Patent GB-357267-A (GB)
Title: Improvements in and relating to the doors of hopper wagons and opening and closing devices therefor
IPC: B61D7/26
Filed: 1930-06-25
Abstract: 357,267. Wagon doors; door holders. BAILEY, D., Boyne Hill, Chapelthorpe, near Wakefield, Yorkshire. June 25, 1930, No. 19392. [Class 103 (iv).] Relates to hopper wagons of the type in which one or more automatically closing doors are prevented from premature closing before complete discharge of the load by means of catches which automatically engage and retain the door or doors in the open position until they are hand released, and consists in end or central locking arrangements applied to a large single door hinged along a longitudinal edge. In the end locking-arrangement shown in Fig. 1, where the closure is effected by a À known combination of spring c<2> and bell-crank lever c<1> pivoted at c, a pin b on the bell crank is adapted during the opening movement of the door a to slide down a curved arm d mounted on a fixed pivot f and finally to engage a notch e, in which it is retained by the weight of the arm d. Release is effected by a double-armed lever g pivoted at i and connected to the ram d by a connecting-rod j. In the central locking-arrangement shown in Figs. 3 and 4, a segment l on the door a is provided with bevels q forming shoulders behind which fixed spring catches or slides m, m<1> are adapted to engage, the catches being released by a cam t actuated from a handle through linkage s.
Patent GB-274889-A (GB)
IPC: B03C1/015
Filed: 1927-07-21
Abstract: 274,889. Rademacher, R., and Goebel, E. July 23, 1926, [Convention date]. Treating ores to facilitate magnetic separation. -A process for separating non-magnetic or weakly magnetic constituents from magnetic or more strongly magnetic constituents of a mineral mixture comprises roasting the mixture either at 300-600‹ C. or above 1100‹ C. and then effecting magnetic separation; or the mixture may be roasted at 300-600‹ C., magnetically separated, and the non-magnetic residue re-roasted at above 1100‹ C.
Patent GB-1255887-A (GB)
Title: Flip-flop display and manual control for bus organized computer
Inventor: SHARP RICHARD STANTON
IPC: G06F11/32
Filed: 1970-04-23
Abstract: 1,255,887. Data storage. BURROUGHS CORP. 23 April, 1970 [4 Aug., 1969], No. 19454/70. Heading G4C. A flip-flop matrix which may, for example, be used as a computer memory comprises a source bus 14 and a destination bus 12 both common to a row of flip-flops 21, means for selectively addressing individual flip-flops in the row, and a common manual control unit 28 for displaying (lamp 33) and changing (buttons 39, 43), the condition of an addressed flip-flop in the row. The flip-flop may be connected to a logic circuit 18 which is shorted out during the test mode. The individual flip-flops are selectively connected to the source and destination busses by means of signals on the addressing lines 16 and 17 which enable AND gates 13 and 23 respectively. In the test mode the condition of an addressed flip-flop is transmitted to lamp 33 via source bus 14 and AND gate 29. The normally open button 39 is used to manually set and reset an addressed flip-flop via OR gate 38 and destination bus 12, the output of the button when depressed blocking AND gate 29 so that the flip-flop can be set or reset by simultaneously actuating or not actuating button 43 without interference from the present state of the flip-flop. The button 43 is common to a complex matrix, a separate button 39 being provided for each row in the matrix. The flipflop may be addressed during the test mode by manual or sequential stepping switches 27.