baber/WOPTO huggingface dataset:
Patent GB-1150516-A (GB)
Title: Cathode Electrode Structure
IPC: H01J29/04
Filed: 1967-09-21
Abstract: 1,150,516. Cathode materials; electron guns. INTERNATIONAL BUSINESS MACHINES CORP. 21 Sept., 1967 [24 Oct., 1966], No. 43027/67. Heading H1D. A cathode structure, in particular for use in an electron gun, comprises an elongated cathode 10, Fig. 1, having a pointed emissive end and made of a rare earth boride, in particular lanthanum hexaboride LaB 6 , and an indirect heating arrangement 12 not in physical contact with the cathode 10 for heating the pointed end, the other end of the cathode being held in an electrically and thermally conductive support 24 which is provided with a cooling arrangement. As shown, cathode support 24 is hollow to facilitate the passage therethrough of a coolant fluid, e.g. water. Fig. 2 shows an electron gun embodying an alternative arrangement in which the cathode support 24 may be solid and in intimate contact with one end of a heat conductive rod 36 which extends into an oil bath 38 located externally of the vacuum system within which the cathode is disposed. This conductive rod may also serve as a lead to the cathode, and the leads 32 to the cathode heater may pass through insulating sleeves 34 in the cathode support and be similarly led out through the oil bath. The cathode may also be heated by electron bombardment. A pair of tantalum shields 31 may surround radiant heater 12 to act as heat reflectors to improve the cathode heating. The electron gun may be used in electron beam recording, machining and welding apparatus and electron microscopes and similar demountable apparatus.
Patent GB-1324468-A (GB)
Title: Trans-stilbene compounds and a process of making these compounds
IPC: C09K19/16
Filed: 1971-09-16
Abstract: 1324468 Trans-stilbene compounds INTERNATIONAL BUSINESS MACHINES CORP 16 Sept 1971 [31 Dec 1970] 43153/71 Heading C2C [Also in Divisions C4 and H4] The invention comprises trans-stilbene compounds of the formula wherein R and R 1  are alkyl, alkanoyloxy, CN or alkoxy radicals, and R 2 , R 3  and R 4  are CH 3 , Cl or H, at least one of R 2 , R 3  and R 4  not being H; and mixtures comprising at least two of the above compounds. Compounds in which R 2  is H, and one of R 3  and R 4  is Cl may be obtained by reacting a 4,4<SP>1</SP>-disubstituted benzyl phenyl ketone with PCl 5 . Compounds in which R 2  is H, and one of R 3  and R 4  is CH 3  may be obtained by reacting the said benzyl phenyl ketone with a methyl magnesium halide followed by acidcatalysed dehydration. Compounds in which R 2  is other than H may be obtained by reducing an appropriate benzyl phenyl ketone with lithium aluminium hydride followed by acidcatalysed dehydration. Examples are given for the production of the compounds. The compounds have useful nematic properties.
Patent GB-1090423-A (GB)
Title: Foil for dry shavers
Inventor: SANDERS NORMAN THOMAS
IPC: B26B19/38
Filed: 1965-10-13
Abstract: 1,090,423. Dry shavers. NEEDLE INDUSTRIES Ltd. Oct. 12, 1966 [Oct. 13, 1965], No. 43356/65. Heading B4B. A foil 10 for a dry shaver guard member is formed with apertures 14, the inner surface 11 of the foil having grooves 12 separated by lands 13. The grooves shown are concentric. Alternatively, they may be formed by a continuous spiral groove, arranged as a multi-start spiral or be straight. The depth of the grooves is in the range 0À0001 to 0.0002 inch, preferably 0À00015 inch, and the thickness of the foil is in the range 0À0015 to 0.005 inch, preferably 0.002 inch. The grooves and apertures may be formed by etching or the grooves formed by rolling and the apertures by piercing. The guard member forms the subject-matter of Specification 1,090,424.
Patent GB-1263799-A (GB)
Title: A dust separator system for a dust creating process
Inventor: HILL ERIC JOHN
IPC: B24C9/00
Filed: 1969-09-02
Abstract: 1,263,799. Centrifugal separators. VACUBLAST Ltd. 21 Aug., 1970 [2 Sept., 1969], No. 43384/69. Heading B2P. In an apparatus in which granular material, e.g. blasting abrasive or coating powder, is applied in a stream of air to an article in an enclosure 1, Fig. 8, a centrifugal separator is provided for separating re-usable granular material from dust and/or debris and comprises a cylindrical hollow shell 17, Fig. 3, into which the stream of air containing the re-usable granular material, dust and/or debris is drawn through an annulus 18 within which are located inclined swirl-producing vanes 19, the re-usable material being removed through one or more longitudinal slots 22 in the wall of the shell and the air with dust and/or debris being discharged through a central outlet aperture 21. The aperture 21 communicates via an exit pipe 24, 20 with a dust separator 9. A conical hood 25 prevents the re-usable material passing through the perforated bottom 11 of the enclosure from falling directly into the separator shell 17. An orifice 29 to which a control valve is fitted may be provided in the bottom 28 of the shell 17 to permit a controlled quantity of air to enter the separator to increase its dust removal efficiency. The re-usable material collects at 3 in the bottom of a hopper 2 and is recirculated via a duct or hose 4 and an ejector nozzle on to the article in the enclosure 1. A screen 30 may be provided below the separator to remove any over-size debris from the re-usable material. In a modification, Fig. 5, the shell 17 is continued around beyond the slot 22 to form a divergent lip 26 providing a greater width at entry to, than at exit from, the slot. In a further modification, Figs. 6 and 7 (not shown) the slot is triangular in cross-section, its width increasing from the top to the bottom of the shell. In a further modification, Fig. 11, an aspirating nozzle 35, in the form of a slot similar in height to slot 22, separates entrained dust and debris from the re-usable material discharged through the slot 22. In modifications of Fig. 11, the nozzle points in the same direction as the slot 22, and is located immediately before, Fig. 13 (not shown), or after, Fig. 12 (not shown), the slot 22 so that the air flow into the nozle is in the reverse direction to the material leaving the slot. An alternative arrangement with the separator mounted horizontally and a different system of collecting the separated re-useable material is described, Figs. 9 and 10 (not shown).
Patent GB-1385027-A (GB)
Title: Optically and electronically coloured materials
IPC: C01B39/52
Filed: 1971-09-17
Abstract: 1385027 Sodalites NATIONAL RESEARCH DEVELOPMENT CORP 18 Sept 1972 [17 Sept 1971] 43422/71 Heading C1A Sodalites (Na 8 [Al 6 Si 6 O 24 ]Cl 2  and derivatives comprising Cra instead of Al, Ge instead of Si and Br, I or OH in place of Cl) are grown from a flux containing a salt having a complex oxyanion, in which the oxyanion is formed from a variable valency element (one whose valency is readily variable under normal chemical reaction conditions i.e. without requiring extreme temperature and pressure to be applied), other than Cr, W, Mo and Bi. The preferred element is V in a ratio in the flux to sodium of between 1 to 1 and 1 to 4. A trace amount of a transition metal may be present. The sodalite is formed by gradually mixing, for example, Na 2 CO 3 , V 2 O 5 , Al 2 O 3 , SiO 2  and NaCl at 750‹ C. and then heating at 1000‹ C. for 12 hrs. before gradual cooling.
Patent GB-1394161-A (GB)
Title: Teaching machines
IPC: G09B7/06
Filed: 1971-09-17
Abstract: 1394161 Teaching machines C E M HANSEL 14 Sept 1972 [17 Sept 1971] 43506/71 Heading G5G A teaching machine has selectors, e.g. push buttons 34, for selecting the answer to a set question from among a number of possible answers, and includes a memory which in a teaching mode of operation can be set by use of the appropriate selector with a correct answer which is retained in the memory for use during a subsequent examining mode. A programme sheet, with questions and answers in appropriate positions, is placed on the machine and is covered by a screen. A light behind a question (or answer), makes it visible to the pupil and the questions are lit in sequence. In operation, the machine is first programmed with the answers to the questions. A switch 36 is set to its "teach" position T and the first question is asked by applying a signal to the corresponding input terminal 32 which causes the question to be displayed. A push button 34, corresponding to the correct answer, is then operated to record this answer in a corresponding memory unit 30. This process is repeated until the answers to all the questions have been recorded. The switch 36 is then set to its "examine" position E. The first question is then asked by applying a signal to the corresponding terminal 32 and the pupil selects an answer by operating one of the push buttons 34. If his choice is correct a signal at terminal 52 causes the machine to advance to the next question; if not, a signal appears at terminal 58 which causes the question to be repeated, and the correct answer or a prompt is displayed. Each memory unit 30 comprises four NOR gates, including two arranged as a bi-stable latch, and is associated as shown with further logic elements so that appropriate signals at terminals 52 and 58 appear in response to inputs at terminals 32 and push buttons 34. In a modification, the memory units 30 are replaced by shift registers. The machine may also be used with auditory presentation, questions and answers being recorded on multi-track tape loops, or in a combined audio-visual mode.
Patent GB-1155969-A (GB)
Title: Sintered Uranium Dioxide.
Inventor: ELYARD CHARLES ANTHONY
IPC: G21C3/62
Filed: 1965-10-14
Abstract: 1,155,969. Uranium dioxide. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 10 Oct., 1966 [14 Oct., 1965], No. 43624/65. Heading C1A. [Also in Division G6] Uranium dioxide ceramic nuclear fuel contains 0-5 to 5 weight per cent of neodymium oxide which prevents columnar grain growth when the ceramic is subjected to a steep temperature gradient up to 1600-2000‹ C. Polybutyl methacrylate binder may be added to a mixture of the powdered oxides which is then die-pressed, the binder removed by heating in hydrogen, and the product sintered at 1750‹ C. in hydrogen. Alternatively, to form the mixed oxides, a solution of a neodymium compound may be mixed with U0 2  and the slurry dried. Reference is also made to slip casting and extruding the mixed oxides and to sintering in argon or steam, followed by firing in hydrogen to remove excess oxygen. The uranium may be enriched in U235.
Patent GB-1475477-A (GB)
Title: Double-barrelled firearm having a filler strip assembly
IPC: F41A21/08
Filed: 1975-10-24
Abstract: 1475477 Double-barrelled firearm STURM RUGER & CO Inc 24 Oct 1975 [29 Oct 1974] 43831/75 Heading F3C A double-barelled firearm (viz. as illustrated a shotgun, or a rifle) has two barrels 11, 12 spaced apart by a front spacer 18 and a rear spacer 19 secured to the barrels 11, 12 to define a space which is partially filled with a pair of filler strips 21, 22 releasably secured to each of the spacers 18, 19. The firearm illustrated is an over-and-under shotgun with a substantially hourglass-shape space between the barrels 11, 12 which are exactly parallel-they could however converge slightly. Each of the strips 21, 22 has at its forward end a lip portion 21a or 22a of reduced cross-section and at its rearward end a lip portion 21b or 22b of reduced cross-section. The lip portions 21a, 22a are removably inserted in a recess 23 in the front spacer 18 and the lip portions 21b, 22b are received in respective cut out portions 24, 25 in the rear spacer 19 and are removably retained there by a pair of blocks 26, 27 removably secured to the spacer 19 by screws 28, 29. The filler strips 21, 22 may be of steel, aluminium, brass or of synthetic resin. The strips 21, 22 are curved in their unstressed condition. The spacers 18, 19 are secured to barrels 11, 12 by silver soldering, brazing or soft solder. The illustrated shotgun has a longitudinal aiming rib 14 secured to barrel 11 by rib spacers 15, and barrels 11, 12 are secured to the forearm (16) of the gunstock.
Patent GB-1141339-A (GB)
Title: Dough cutting and packing apparatus
IPC: B65B25/06
Filed: 1967-09-26
Abstract: 1,141,339. Cutting and packing dough pieces. PILLSBURY CO. 26 Sept., 1967 [27 Sept., 1966], No. 43873/67. Heading B8C. Pieces of dough pressed into passages in a cutting grid 106 are expressed from the grid into cans 26 by members 47 which first exert suction to hold the pieces, and are then subsequently connected to a source of pressure. The pieces are compressed in the passages, for example by the convergence of the walls of the passages. In the form illustrated several grids are carried by plates 98 joined by chains 104 driven intermittently. A sheet of dough is fed under a pressing roller (138), (Fig. 2, not shown), which presses the dough into the grids at a point where these are supported by a backing roller (140). The members 47 are connected to a vertically reciprocating manifold 45 controlled by a valve 50 so that pressure is automatically applied within the manifold towards the end of the downward stroke. The cans 26 are fed by two pairs of screws 142, 144 driven so that the cans dwell for periods which may be varied to alter the number of pieces fed to each can.
Patent GB-1529696-A (GB)
Title: Document handling apparatus
IPC: G03G15/00
Filed: 1975-10-24
Abstract: 1529696 Feeding sheets XEROX CORP 24 Oct 1975 43931/75 Heading B8R The subject-matter is the same as that of Specification 1,529,695, but the claims are directed to the registering means, and the construction of the baffle 200 is described in detail. The baffle is pivoted at one edge 202b and its edge 202a adjacent the registration stop surface 42 is raised and lowered by an arm 214 driven through a clutch 212 from the drive of the roller 60 of the belt 52, so as to be raised when a sheet is to be fed on to the platen 12 and lowered when the sheet is moved backwards against the stop. The baffle and stop may be formed with interengaging square teeth, and the baffle may have a guide ridge to urge the sheet edge downwardly, and the stop surface may be forwardly inclined for the same purpose.
Patent GB-1064758-A (GB)
Title: Improvements in cutting fluids
Inventor: JACQUES JAMES KEITH
IPC: C10M173/00
Filed: 1963-11-08
Abstract: Cutting tools are lubricated by applying thereto a cutting fluid which contains an alkyl phosphite and/or thiophosphite.  The cutting fluid may comprise water, light hydrocarbon oils, fatty acids and unsaturated carboxylic acids having more than 8 C atoms, esters and soaps of such acids, polyhydric alcohols, low molecular weight polyoxyalkylene condensates and aqueous emulsions or solutions of the above. Specified examples of the above are oleic, linoleic, lauric, palmitic and stearic acids, tall oil, linseed oil, glyceryl mono-oleate, glycerol, ethylene glycol, sorbitan monolaurate, lithium stearate, sodium palmitate, triethyleneglycol and nonyl phenyl polyoxyethylene ethers. Emulsifiers specified are sorbitan esters, glyceryl esters, polyoxyalkylene ethers or esters, alkyl, aryl or alkaryl sulphonates and alkali metal or zinc or lead soaps.  The fluid may also contain acid alkyl phosphates, up to 20 wt. per cent of sulphur and up to 40 wt. per cent of a paraffin wax having a melting point less than 95 DEG  C.
Patent GB-956624-A (GB)
Title: Preparation of tetramethylene sulphone
Inventor: SHIPMAN ALAN JOHN
IPC: C07D333/48
Filed: 1961-12-11
Abstract: Tetramethylene sulphone is made by heating at least two moles of ethylene with one mole of sulphur dioxide at super atmospheric pressure. The preferred reaction conditions are 250-350 DEG C., 400-600 atmospheres and ethylene to sulphur dioxide molar ratio between 2 and 10 to 1. An example is provided.
Patent GB-921318-A (GB)
Title: N-3-hydroxybutylpiperazine
Inventor: WALLS LESLIE PERCY
IPC: C07D295/088
Filed: 1959-01-19
Abstract: The invention comprises N-3-hydroxybutylpiperazine.  This compound, the dipicrate of which is also described, may be produced by alkaline hydrolysis of an N-alkoxycarbonylN1-3-hydroxybutylpiperazine, obtainable by condensation of 1-chlorobutan-3-ol with an N-alkoxycarbonylpiperazine.  1-Chlorobutan-3-ol is prepared by reduction, with lithium aluminium hydride, of 1-chloro-butan-3-one, obtained by condensation of acetyl chloride with ethylene in the presence of aluminium chloride.  Specification 921,316 also is referred to.
Patent GB-1194756-A (GB)
Title: Pneumatic Tire
IPC: B60C5/00
Filed: 1968-09-19
Abstract: 1,194,756. Pneumatic tyres. GOODYEAR TIRE & RUBBER CO. 19 Sept., 1968 [16 Oct., 1967], No. 44488/68. Heading B7C. A pneumatic tyre 10, of reduced diameter when deflated for storage is built and cured whilst still in the substantially cylindrical "flat-band" condition as shown in Fig. 1. It is then mounted on a split rim 30 and inflated to assume conventional tyre shape, whereafter it is deflated, its flexible sidewalls 23, 24 being displaced to assume the folded position shown in Fig. 4. The cords of the carcase plies 12, 14 make angles of at least 55 degrees with the midcircumferential plane, and there may be additional breaker plies 18, 20 with cord angles of between 45 and 75 degrees, in which case the cord angles of the carcase plies are at least 75 degrees. The sidewall is stated to be of less than conventional thickness, typically the rubber layer being 0À05 inch thick. When intended solely for use as a spare tyre, the thickness of tread material may also be reduced.
Patent GB-997655-A (GB)
Title: Organosilicon compounds
IPC: C08G77/00
Filed: 1963-11-12
Abstract: The invention comprises (1) silanes of the general formula <FORM:0997655/C3/1> and (2) siloxanes which are homopolymers of the unit general formula <FORM:0997655/C3/2> or copolymers thereof with units of the general formula <FORM:0997655/C3/3> wherein each X is a halogen atom or a radical of the formula <FORM:0997655/C3/4> R1 is a hydrogen atom or monovalent hydrocarbon radical, R11 is a divalent hydrocarbon radical, each Y is divalent and is p-phenylene; 4,41 - diphenylene; 4,4 - diphenylene ether; 4,41 - dimethylenebenzene or 4,41 - dimethylenediphenyl ether radical, R is a monovalent hydrocarbon radical free from aliphatic unsaturation, W is a monovalent hydrocarbon or halohydrocarbon and m is 0, 1, 2 or 3. Suitable R1 hydrocarbon radicals are alkyl, alkenyl, cycloalkyl, cycloalkenyl, aralkyl, alkaryl and aryl. Suitable R radicals are alkyl, cycloalkyl, aryl, aralkyl and alkyl.  Silanes (1), wherein X is chlorine, are prepared (i) by reacting 1 mole of HSi(R)2.Y.Si(R)2H and at least 2 moles of CH2 = CHSi(R)2Cl, or (ii) by reacting 1 mole of CH2 = CHSi(R)2.Y.Si(R)2.CH = CH2 and at least 2 moles of HSi(R)2Cl; in both cases suitable catalysts are platinum black, platinum on a carrier, and salts of platinum, e.g. chloroplatinic acids, and suitable temperatures are 50 DEG  to 150 DEG  C. The terminal chlorine atoms of the silane may be replaced by other groups X in the usual way.  Siloxanes (2) are prepared by hydrolysing silanes (1); the resulting hydrolysate may be further polymerized, e.g. by alkalimetal hydroxides, H2SO4 or C6H5SO3H. Siloxane copolymers (3) wherein m is preferably 2, are prepared (a) by cohydrolysis of the silane (1) wherein X is chlorine and a silane WmSiCl4- m, or (b) by mixing homopolymer siloxanes (2) and homopolymer siloxanes of units <FORM:0997655/C3/5> in the presence of a siloxane-bond rearranging catalyst, or (iii) mixing a compound <FORM:0997655/C3/6> a siloxane of unit formula <FORM:0997655/C3/7> containing a plurality of hydroxyl groups, and a catalyst, e.g. an organic isocyanate or a b -amino acid or lactam.  These may be cross-linked or cured, e.g. by organic peroxides or high energy radiation.  Suitable additives are fillers (e.g. silica, alumina, clay, carbon black), pigments, plasticizers and compression set additives. Many examples are given.  Uses: Siloxane polymers are used as film-forming agents, as bases for silicone elastomers, rubbers and plastics, e.g. for gasketing and coating applications. Specifications 836,954 and 864,252 are referred to.
Patent GB-946984-A (GB)
Title: Means for joining wall sections
IPC: F26B25/12
Filed: 1961-12-13
Abstract: 946,984. Joining walls; clamps. SVENSKA FLAKFABRIKEN A.B. Dec. 13, 1961 [Dec. 14, 1960], No. 44685/61. Headings E1V and E2B. [Also in Division F4] Wall sections 1, 2 are joined together by two sheet steel rails 7, 8 which are forced apart against flanges 5 on the channelled ends of the wall sections by bolts 9 set perpendicular to the plane of the wall. As shown, bolts 9 pass through welded-on nuts 12 and have smaller diameter extensions 14 which are flattened outside the rail 7. The joint is insulated by filling 11 and a cover strip 10.
Patent GB-1012999-A (GB)
Title: Aircraft with jet lift engines for vertical take-off and landing
IPC: B64C29/00
Filed: 1964-11-03
Abstract: 1,012,999. Jet-lift aircraft. DORNIER. WERKE G.m.b.H. Nov. 3, 1964 [Nov. 9, 1963], No. 44744/64. Heading B7G. In an aircraft provided with jet-lift engines for take-off and landing a bank of lift engines 2 housed within a nacelle 1 are enclosed during flight by doors 3, each provided with jetdeflector slats 4. During ground running with the doors closed as in Fig. 1, the jet gas are deflected rearwardly to prevent ground erosion. The slats may be angled to deflect the gases laterally from the fuselage. For take-off and landing the doors are opened as in Fig. 5 to provide jet lift. It may be arranged for the gases from front engines only to be deflected directly, which gases act upon the rearward jets to cause deflection. Specification 951,373 is referred to.
Patent GB-1059207-A (GB)
Title: Methods of improving the corrosion-resistance of aluminum surfaces
IPC: C23C22/83
Filed: 1965-10-22
Abstract: The corrosion-resistance of an aluminium metal or alloy surface is improved by treating a chromate conversion coating upon the surface at a temperature of at least 65 DEG C. with an aqueous alkaline (pH 8 to 12) solution containing 15 to 100 g/1 of a soluble hexavalent chromium-containing compound (calculated as Na2Cr2O7) e.g. one or more Na, K, Li or ammonium salts of chromic acid.  The chromate conversion coating may be formed on the surface by treating it with an acidic solution containing soluble hexavalent Cr ions (chromic acid) and an halogenated accelerating agent, e.g. KZr- and ammonium boro-fluorides, with or without ferro- or ferricyanide ions and/or salts of complex heteropolymolybdates and/or Ba, Sb, or Sn ions.
Patent GB-1521006-A (GB)
Title: Mining machines
IPC: E21C27/02
Filed: 1976-10-28
Abstract: 1521006 Mining machines GOSUDARST PROEKT - KONSTRUKTOR I EXPERIMENT INST UGOL MASHINOS "GIPROUGLEMASH" 28 Oct 1976 [20 Nov 1975 9 Dec 1975] 44813/76 Heading E1F A mining machine comprises an integral body 1 having hermetically sealed openings 14 for giving access to a motor 13 and reduction gearing, cutting heads located at each end of the body, and parallel levers 5 and 6 articulately connecting the body to grippers 7. The cutting heads may be driven by two motors having parallel axes of rotation.  For Figures see next column
Patent GB-919000-A (GB)
Title: Preparation of purified brine
Inventor: LADENBURG KURT
IPC: C01D3/16
Filed: 1960-12-31
Abstract: Brine containing a low concentration of calcium is prepared from water and sodium chloride containing calcium sulphate as an impurity by adding to either or both of the water and impure solid sodium chloride, 0,3 to 3 grams of an alkali metal carbonate and 0,06 to 1 gram PO4 in the form of alkali metal pyrophosphates, hexametaphosphates, or tripolyphosphates, per kilogram of dissolved sodium chloride.  Sodium carbonate is the preferred carbonate.  The process may be effected by spraying a concentrated aqueous solution of the carbonate and polyphosphate on to the impure solid sodium chloride, adding dry solid carbonate and polyphosphate to the impure solid sodium chloride, or dissolving the carbonate and polyphosphate in the water used for dissolving the impure sodium chloride.