baber/WOPTO huggingface dataset:
Patent GB-1278224-A (GB)
Title: Improvements in or relating to castings
IPC: B22D27/04
Filed: 1971-05-21
Abstract: 1278224 Directional crystallization TRW Inc 21 May 1971 [6 Oct 1970] 16265/71 Heading B1S [Also in Divisions B3 and H5] Directionally solidified castings are provided by preheating a ceramic mould, pouring molten metal into the mould, positioning a plurality of electrodes along the desired direction of grain, growth of the castings with their axes perpendicular to the desired grain growth direction. Connecting the electrodes to a high potential DC source and sequentially energising the electrodes to facilitate cooling of the casting by the application of an electrostatic field. A multicavitied turbine blade mould 10 is placed upon a copper water-cooled, chill plate 12, within an induction furnace having several annular sequentially operable graphite susceptors 18 separated by ceramic annular insulation 19. The insulation 19 supports electrodes 20-28 which are connected to an X-ray high voltage supply 29 by means of a sequential switching device 31. The mould 10 is preheated (e.g. to 2300‹F) and molten metal poured (e.g. nickel alloy at 2900‹F) whereupon an electrode 44 connected to the positive terminal of the DC supply 29 is dipped into the molten metal in the mould. Upward solidification is induced from the chill plate 12 and is continued by sequentially turning off the current supply of the susceptors 18 upwardly. To accelerate cooling the electrodes 20 to 28 are sequentially energised upwardly by device 31 controlled by a timer 32. Conduits 45 are provided in the induction furnace base 13 to supply air or inert gas to the mould to accelerate cooling.
Patent GB-1310324-A (GB)
Title: Coating of abrasive particles
Inventor: ROY ALEXANDER R
IPC: C09K3/14
Filed: 1971-05-21
Abstract: 1310324 Coating abrasive particles; electrolytic coatings DE BEERS INDUSTRIAL DIAMOND DIVISION Ltd 21 May 1971 [22 May 1970] 16293/71 Headings C7B and C7F [Also in Division C4] An abrasive particle has a composite coating comprising a first layer of Ni or a Ni alloy and a second layer of Cu, the one layer being on the other layer and the metal of each layer being 20-80 wt per cent of the abrasive particle. Preferably the composition coating is 50-150 wt per cent of the particle. Abrasives mentioned are diamond, cubic boron nitride, silicon carbide and tungsten carbide; a flash-coating of high Cucontent bronze may be provided on the coated particle, constituting 2 wt per cent thereof. Metals are applied electrolessly or electrolytically; specifically, Ni may be deposited electrolytically from a Ni-sulphamate bath. Specific examples are (1) abrasive coated with Ni coated with Cu and (2) abrasive coated with Ni-Fe (preferably containing 36-43% Ni) coated with Cu, the coatings being respectively 50-80% and 20-50% of the particle.
Patent GB-497918-A (GB)
Title: A method of treating articles of wood or other fibrous material
IPC: B27K3/15
Filed: 1938-05-31
Abstract: <PICT:0497918/III/1> In treating wood or other fibrous material by impregnation with synthetic resinous material, the articles from the impregnating vessel are immersed in a jacketed tank 11 of methyl alcohol heated by a steam coil 12 and moved about until surplus resin is removed. They are then transferred to a jacketed tank 10 containing dipentene which is also heated by a steam coil 12.  The tanks 10, 11 are connected to storage tanks 19, 22 from which they are replenished.  When the resin content of the methyl alcohol is sufficiently high, part of the resin solution is drawn, by vacuum, into a jacketed vessel 25 where the alcohol is evaporated and recovered by condensers 38, 40 and passed to a receptacle 39 leading to the stage tank 22; the tank 11 being replenished from the storage tank 22.
Patent GB-1036671-A (GB)
Title: Improvements in or relating to apparatus for successively introducing flowable material into containers
IPC: B65B39/14
Filed: 1963-04-25
Abstract: 1,036,671. Valves. H. J. HEINZ CO. Ltd. and R. H. W. THORN. April 24, 1964 [April 25, 1963], No. 16393/63. Heading F2V. [Also in Division B8] Ferrous cans approaching a delivery device 76 are detected by an electromagnet, which operates a fluid energized motor 95, via a timer, to move a valve member 88 (see Division B8).
Patent GB-758450-A (GB)
Title: Improvements in or relating to oxacyclobutane polymers
IPC: C08G65/18
Filed: 1953-06-15
Abstract: Polymers with a molecular weight of at least 10,000 are produced by polymerizing with Friedel-Crafts catalysts below 80 DEG  C., 3,3-di-substituted oxacyclobutanes (oxetanes) of the general formula <FORM:0758450/IV(a)/1> in which X and Y are groups other than hydrogen.  Long lists are given of groups which X and Y may be and many suitable di-substituted oxetanes are mentioned.  If either or both of the groups contains a free OH or NH2 group they must be protected, e.g. by acylation or formylation before polymerization, after which the protective groups are removed by hydrolysis.  The two substituent groups X, Y may be linked by groups such as acetal, ketal, formamide or carbonate linkages.  By chemical after-treatment the groups X, Y may be changed into other groups. Thus the formal or acetal of 3,3-bis-(hydroxy-methyl) oxetane may be polymerized, hydrolized and then nitrated to produce poly-3,3-bis-(nitratomethyl) oxetane.  Polymerization catalysts mentioned are boron trifluoride, its molecular complexes, stannic chloride, antimony pentachloride, aluminium chloride, zinc chloride or titanium chloride.  They may be used with a co-catalyst, e.g. stannic chloride with HCl. Polymerization may be effected in presence of a diluent, e.g. n - hexane, cyclohexane, benzene, toluene, methylene chloride, chloroform, carbon tetrachloride, dichlorbenzene, or nitromethane. Polymerization may be batchwise or continuous.  Products may be separated, e.g. by filtration or by addition of a precipitating liquid which destroys the catalyst, e.g. alcohols.  They may be spun to filaments or formed to films which may be molecularly oriented by cold-drawing, or they may be moulded, e.g. to form "squeeze bottles," or used for coating compositions.  Examples 1-8 describe polymerization of 3,3-bis-(chlormethyl) oxetane alone or in various solvents and with various catalysts.  The product is insoluble in most solvents but soluble in cyclohexanone, dioxane, or nitrobenzene. Example 9 uses 3-chloromethyl-3-ethyl oxetane.  Examples 10, 11 start with 3,3-dimethyloxetane.  Example 12 starts with 3-chloromethyl-3-methoxymethyl oxetane producing a polymer soluble in carbon tetrachloride, acetone or benzene.  Example 13 uses 3-(chloromethyl)-3-methyl oxetane, the polymer being rubbery. Example 14 used 3,3-bis-(cyanomethyl) oxetane.  In Example 15 3,3-bis-(chloromethyl) oxetane is polymerized, mixed with an antioxidant (2,2-di-tert.-butyl methylene-bis-p-cresol) and melt spun to flame- and chemical-resistant filaments which were cold-drawn. Examples 16, 17 both relate to polymerization of 3,3-bis-(chloromethyl) oxetane, the products being mouldable and spinnable.  Reference has been directed by the Comptroller to Specification 723,777.
Patent GB-442347-A (GB)
Title: Improvements in or relating to the cylinders of two-stroke internal combustion engines
IPC: F02B25/14
Filed: 1935-06-07
Abstract: 442,347. Cylinders. SCHROEDTER, R., Bad Godesberg, Germany. June 7, 1935, No. 16561. Convention date, June 25, 1934. [Classes 7 (ii) and 7 (iii)] In a two-stroke engine cylinder, the fuel nozzle B1 or a port or group of ports for gas or rich mixture, are arranged equidistant from opposed exhaust ports A1, air ports Ll being arranged intermediately All the admission ports are arranged radially and tangential to a concave piston head D having rounded edges E. A sparking - plug Z is located ir the head.
Patent GB-198226-A (GB)
Title: Improved means and mechanism for admitting and discharging the gases of internal combustion engines
IPC: F01L5/18
Filed: 1922-06-16
Abstract: 198,226. Clegg, W. H. June 16, 1922. Valves. -- A supplementary piston b driven from an overhead half-speed shaft f controls an exhaust port n, scavenging port k, and mixture-admission port l, the two ports k, l communicating in succession with a passage m controlled by a poppet valve g. Valve-gear.-The valve g is actuated by a tappet i engaging a roller h on the connecting-rod e. According to the Provisional Specification, the valve g is operated by a cam-shaped slot or face on the connecting-rod.
Patent GB-787070-A (GB)
Title: Improvements in microwave energy distribution apparatus
Inventor: TOMIYASU KIYO
IPC: H01P5/04
Filed: 1952-07-02
Abstract: 787,070. Waveguides. SPERRY RAND CORPORATION. July 2, 1952, No. 16701/52. Addition to 743,065. Drawings to Specification. Class 40 (8). Energy transfer between adjacent, intercommunicating waveguides is effected through co-operating apertures in the waveguides and is controlled by means of a manually adjustable shutter. The shutter may be movable either laterally or longitudinally across the aperture and the waveguides may be straight or curved. The laterally movable shutter has several different sized apertures and the required power transfer is obtained by placing the appropriate shutter aperture between the waveguide apertures. The longitudinally movable shutter has a single aperture which is continuously adjustable along the waveguide apertures. Specification 743,066 also is referred to.
Patent GB-1270212-A (GB)
Title: A laser device
IPC: H01S3/042
Filed: 1970-04-09
Abstract: 1,270,212. Lasers. WEBKZEUGMASCHINENFABKIK OERLIKON - BUHRLE A.G. 9 April, 1970 [25 April, 1969], No. 16866/70. Heading H1C. A laser comprises a rod 5 and a light source 6 disposed along the foci of an elliptical crosssection glass tube 2 which is coated on its outer surface with a reflective film 9. The film 9 is coated with a protective heat conducting film 10, for example of copper, on to which a finned metal radiator 11 may be fixed. The rod and light source are supported by metal plates 1 sealed to the glass tube, and a coolant, preferably water, is passed through the assembly via ports 8.
Patent GB-504004-A (GB)
Title: Improvements in the vulcanization of rubber
IPC: C08K5/00
Filed: 1938-06-08
Abstract: 504,004. Vulcanising rubber. WING- FOOT CORPORATION. June 8, 1938, No. 17003. Convention date, Sept. 23, 1937. [Class 70] Rubber is vulcanized in the presence of an accelerator consisting of the reaction product of a haloimide of a dibasic acid and a dithio acid. Reaction products of aliphatic N-haloimides such as N-halo succimide, and dithiocarbamic acid are preferred, e.g. N-(pentamethylene dithiocarbamyl) succimide. In an example, 55 parts of sodium pentamethylene dithiocarbamate were dissolved in 500 parts of alcohol. To this solution were added 40 parts of N-chloro succinimide. The mixture was cooled in an ice bath during the reaction and finally warmed on a steam bath. The precipitated sodium chloride was filtered off. The reaction product was obtained as pale yellowish white crystals in a 62 per cent yield. The product has the probable formula N-haloimides of substituted succinic acid and of malic, citraconic acids and aromatic acids such as phthalic acid substituted or unsubstituted, may also be used. Substituted dithiocarbamic, xanthogenic acids, dithiofuoric, dithiobenzoic, and dithioacrylic, may be used as the dithio acid.
Patent GB-530330-A (GB)
Title: Improvements in or relating to abrasive articles
IPC: B24D3/34
Filed: 1939-06-09
Abstract: 530,330. Abrasive materials. TENNANT, W. J. (Carborundum Co.). June 9, 1939, No. 17009. Drawings to Specification. [Class 70] An abrasive material suitable for grinding- wheels comprises abrasive particles, which may consist of diamonds, fused alumina, carbides of boron, silicon, tantalum, tungsten &c. embedded in a matrix of iron or other metallic particles. and a heat-hardenable organic bonding material, for instance, a phenol-formaldehyde resin. A specimen composition consists of 3.9 per cent. by weight of diamonds of grit size 80-200, 82.8 per cent. of powdered iron, and 13.3 per cent. of resin. The metal particles are of irregular shape and of smaller dimensions than the abrasive particles.
Patent GB-1499732-A (GB)
Title: Process for separating and recovering residual monomers from aqueous suspensions of acrylonitrile polymers
IPC: C08F6/16
Filed: 1975-04-24
Abstract: 1499732 Recovery of acrylonitrile monomer from a polymer dispersion BAYER AG 24 April 1975 [27 April 1974] 17011/75 Heading C3P A process for the separation and recovery of unreacted acrylonitrile monomer, and optionally comonomers therewith, said comonomers being more volatile than water and being substantially insoluble in water from an aqueous dispersion of a filament-forming acrylonitrile polymer, wherein a filterable acrylonitrile polymer dispersion, the liquid phase of which contains up to 7% by weight of residual acrylonitrile monomer and up to 2% by weight of residual comonomers, is subjected to distillation in a thin-layer evaporator, the pressure prevailing inside the thin-layer evaporator being regulated so that the temperature of the evaporating liquid phase of said polymer dispersion does not exceed 95‹ C., the average residence time of said polymer dispersion in said evaporator does not exceed five minutes, and the proportion of the liquid phase which evaporates is up to 30% by weight, wherein the vapours released during evaporation are condensed in a condenser initially under substantially the same pressure which prevails in the thin-layer evaporator at a temperature of 0‹ C. or above, after which the uncondensed vapours are compressed to pressures higher than that prevailing in the condenser, and wherein the monomer-rich phase obtained, following separation of the aqueous phases, are returned to the polymerization process. Figs. 1 and 2 (not shown) illustrate two processes which may be used. In the Examples, monomers are separated from aqueous dispersions of (1) acrylonitrile/ methylacrylate copolymer, (4) acrylonitrile/ vinylidene chloride / 3 - methacryoyl - amidodiphenylsulphimide, whilst (2), (3) and (5) illustrate comparative processes on the same dispersions.
Patent GB-146120-A (GB)
Title: Improvements in felts for use on the drying portion of paper and paste-board machines
IPC: D21F1/00
Filed: 1920-06-23
Abstract: 146,120. Asten, E. von. Oct. 21, 1916, [Convention date]. Felts.-Wires covered with asbestos are used in the making of felts for drying in paper machines. These may constitute the whole felt or they may be used as wefts combined with warps of wire, wefts of asbestos threads may be used. Felts so produced may be combined with a lower fabric made solely of wire.
Patent GB-1245567-A (GB)
Title: Colour killer circuit
Inventor: HOWE DEREK HENRY
IPC: H04N9/70
Filed: 1970-04-10
Abstract: 1,245,567. Colour killer circuit. PYE Ltd. 10 April, 1970, No. 17208/70. Heading H4F. In a PAL type receiver, Fig. 1, comprising R/F, I/F amplifiers 2, luminance amplifier 4, display 5, and colour subcarrier amplifier 9, the chrominance signals are fed to a threshold gate 10 and the swinging colour subcarrier bursts to an amplifier 13 gated at the burst intervals by pulses from the line time base 6. The subcarrier local oscillator 12 is connected to phase detector 15 which produces an A.C. signal at half the line frequency due to the alternating phase of the bursts. The detector output may also contain responses to interference but these are reduced by an integrating circuit 18, Fig. 2. The average output of the detector is used to phase control the local oscillator. The output of 18-still A.C.- is passed to a voltage multiplier/detector 19 to give a D.C. voltage as a multiple of the detector output amplitude. The multiplying increases the difference between the cases of black and white or interference, and colour signal reception. The circuit 19 in Fig. 2 comprises a standard voltage double/detector and the gate 10 has an input Zener diode 36 which only conducts for large input signals, indicative of a definite colour burst. The conduction of diode 36 drops the base of transistor 35 to a negative voltage such that the transistor conducts. This drops the voltage at the junction of resistors 33, 32 to zero and causes delay line driver transistor 27 to conduct the chrominance signal at 28 to a delay line input transducer 29.
Patent GB-242327-A (GB)
Title: A portable folding seat or guard cover for water closet seats
IPC: A47K13/14
Filed: 1925-05-27
Abstract: 242,327. Crockford, E. M. May 27, 1925. Seat - guards; commodes. - A portable seat-guard of wood or other rigid material is made up of sections connected together by hinges B of link pattern lying within the thickness of the seat, as in Figs. 1, 4 or Fig. 7, so as to present an even surface. T h e apparatus is secured in the folded position by a pin D or by a hook, and may be used as a seat in conjunction with a pail.
Patent GB-730838-A (GB)
Title: Improvements in fire lighters
IPC: C10L11/04
Filed: 1953-06-23
Abstract: 730,838. Firelighters. HAYNES, J. June 22, 1954 [June 23, 1953], No. 17320/53. Class 50. A firelighter comprises wood which has had its surface charred to form an absorbent surface layer and impregnated. with an inflammable material such as paraffin, kerosene or wax. If paraffin is used the firelighter may also have an outer covering of wax. The wood may be in any form such as chips, shavings, blocks combined or built-up in any desired manner. Preferably two layers of chips are formed and connected together at right angles by means of a rubber band or by means of string which is passed down through the centre of the two layers. Thus assembled the two layers are swung together, thereby elongating the pile in one direction and reducing the width in the other direction.
Patent GB-126079-A (GB)
Title: Improved Spud or Mud Grip for Endless Moving Chain Tracks of Self Propelled Vehicles.
Inventor: TRITTON WILLIAM ASHBEE
IPC: B62D55/26
Filed: 1916-12-02
Abstract: 126,079. Tritton, Sir W. A. Dec. 2, 1916. Portable-track wheels.-Transverse tread grips k are each supported by V-shaped plates h pivoted to brackets b on adjacent track-links a. In a modification, the plates h are connected by tubular sleeves through which wood or other tread members are detachably fitted.
Patent GB-1470438-A (GB)
Title: Apparatus for speech identification
IPC: G10L25/15
Filed: 1974-04-22
Abstract: 1470438 Vocoders WESTINGHOUSE ELECTRIC CORP 22 April 1974 [8 May 1973] 17510/74 Heading H4R A formant tracket includes tunable electronic filters 20, 30 having respective frequency responses (such as A, B, Fig. 5) and whose outputs are compared 40-44 to produce a control signal which adjusts the frequency responses until the outputs become equal at the formant frequency F, Fig. 6. The arrangement of Fig. 1 forms part of a cascade to extract the pitch frequency and the first three formants. The filters initially centre on f 0  - #f and f 0  + #f respectively and therefore produce different outputs when a formant F, Fig. 5 occurs. The filter outputs are rectified 40, 44 in opposite senses, added 42 and integrated 50 to control FET's 23, 33 to shift the centre frequencies to the Fig. 6 position. The Q-values of the filters may simultaneously be raised by controlled FET's 24, 34 to reduce the bandwidth. The lowpass output from filter 20 is added to the control signal to bias the circuit to detect the lowest frequency formant in the band. The integrator output is gated 60 to processing circuitry S when the band output output from filter 30 exceeds a threshold to exclude the beginning and end of a response from transmission. Amplifiers 67, 68 and differential amplifier 70 prevent passage of the analysed band to succeeding stages. The processing circuitry S may normalize the formants and compare them in a semiconductor matrix to identify a speaker and/or word in a sonogram.
Patent GB-952742-A (GB)
Title: Improvements in or relating to structural panels
IPC: B29C44/20
Filed: 1960-05-19
Abstract: <PICT:0952742/C3/1> Structural panels are made by introducing foamable polystyrene or other plastics beads between two travelling support webs and foaming the beads by introducing a heating medium between the webs. The heating medium may be steam or hot air. The support webs may be coated with a parting composition and separated from the foamed material which then itself constitutes the panel. As shown, a pair of rubber or like endless belts 40, 41, are carried over pulleys 49, 51 between a pair of chain conveyers 102, 103 which pass around sprockets 21, 22. The belts 40, 41 carry adhesive coated paper webs 100, 101, into the space 300 between which partially foamed polystyrene foamable beads are introduced through a flat delivery nozzle 67. The foaming of the beads is completed by dry steam introduced from a manifold 90 through a row of fine lances 92, and the foamed material is consolidated in the space 105 by the pressure of the slat elements of the conveyers. The space 105 is closed at the sides by angle pieces of plastics material secured to the ends of the slats. The upper conveyer 102 is vertically adjustable, by screws on the frame of the apparatus, to adjust the space 105 to give the product the required thickness.
Patent GB-620846-A (GB)
Title: Improvements in typewriting and like machines for printing by the use of type characters and a coated web
IPC: B41J3/24
Filed: 1946-06-13
Abstract: 620,846. Typewriters &c. BRUMHILL, C. W. June 13, 1946, No. 17687. [Class 100 (iv)] In a typewriter or like machine, particularly a hectograph machine employing a coated web 10, a feeding or guiding device comprises a hollow roller, the peripheral surface of which comprises a series of circumferentially spaced elements which engage the web tor a portion only of the periphery, the space between the elements affording passage for the coating material detached from the web. As shown, a web 10 fed from a supply spool 13 is guided to a platen 5 over a roller 18 fixed to the main frame and over rollers 19, 20 on the carriage to the front of the carriage where it is guided on its coated surface by the hollow rollers 21 where it travels through a guide to the typing station behind a master sheet. The path of the ribbon and details of the guide are described in Specifications 596,682 and 596,685 respectively. The web 10 is drawn off by a roller 15 and a co-operating spring-pressed roller 16, each of hollow construction comprising, respectively, sleeves 34, 37, flanges 33, 36 and a series of spaced vanes 35, 38 intermeshing with each other. Roller 15 is driven by a pin 53 on a toothed disc 49 in frictional engagement with a toothed disc 47 driven by a spring drum 44 wound by a cord 45 during the reverse traverse of the carriage. During the winding of the drum 44, a pawl mechanism 46, 48 trails over the tooth disc 47 which remains stationary. When a rack release lever or a tabulator key is depressed, a pawl 56 engages and locks the disc 49, and the slipping action of the clutchwasher 50 allows the drum 44 to wind up a cord 45. Another pawl 57 prevents the disc 49 from rotating in the reverse direction. A web-clamp 29 secures the web to the carriage during letter-spacing. The used web, after passing through rollers 15, 16, is removed from roller by a stripper 43 and is prevented from contacting the disc 49 by a guard plate 58.