baber/WOPTO huggingface dataset:
Patent GB-1332254-A (GB)
Title: Surface-controlled field effect semiconductor device
IPC: H01L29/00
Filed: 1971-08-09
Abstract: 1332254 Semi-conductor devices INTERNATIONAL BUSINESS MACHINES CORP 9 Aug 1971 [8 Aug 1970] 37263/71 Addition to 1317493 Heading H1K In a FET of the kind described in Specification 1,317,493 wherein a p-doped substrate has diffused or implanted therein spaced N + doped source and drain regions 2, 3 covered by a thin oxide layer 4 metallized at 5 as channel gate, a third strip shaped highly doped diffused or implanted region 6 of e.g. N+conductivity extends laterally into the channel from which a potential is tapped off and connected through the oxide layer to the gate at contact 7 outside the channel. In bi-stable operations momentary application of postitive gate voltage maintains and does not discharge the channel while a gate voltage lower than the FET threshold discharges the channel and holds the gate at low potential. The region 6 may be of opposite conductivity to the drain and source regions to insert a diode path in the gate channel connection. The width of the lateral region may be narrow compared with the length of the channel and part of its area of the region may be thickly and part thinly covered with insulant oxide to obtain further narrowing of the intersection with the channel.
Patent GB-818483-A (GB)
Title: Improvements in or relating to power steering gear
IPC: B62D5/24
Filed: 1955-12-29
Abstract: 818,483. Vehicle power steering. BISHOP, A. E. Dec. 29, 1955 [Jan. 3, 1955], No. 37293/55. Class 79(5) [Also in Groups XXIV, XXIX and XXXIV] In a power steering system the steering gear provides a variable ratio connection Having a first steering ratio in the straight ahead position and a ratio decreasing rapidly on being moved away from the straight ahead position, power steering valve being provided responsive to steering torque. As shown the steering gear (see Group XXIV) comprises a worm 15 on the steering shaft meshing with a wormwheel 13 carried by a shaft 21 and having a radial slot 16 engaged by a roller 17 carried by a pin 18 on an arm 19 of the steering gear output shaft 12, the distance L between the pin 18 and shaft 21 being at a minimum when the gear is in its straight ahead position. The power system comprises a cylinder 14 secured to the steering gear housing 10 and containing a piston 61 carrying a sleeve 62 mounted in a sealing ring 63, the sleeve housing a connecting rod 25 pivoted to the pin 18. The piston is under the control of a piston valve actuated by rotation of the steering shaft 11. The shaft 11 is connected to a shaft 15a carrying the worm 15 by a connection 11a and pins 11c passing through a collar 11b. Arranged between a shoulder 11d on the collar 11b and a shoulder 15b on the shaft 15a is a valve spool 26 formed with lands 29, 30 and grooves 28, 31, 32 co-operating with grooves 33, 34 separated by a land formed in the housing 10, the grooves 33, 34 being connected to the ends of the cylinder 14 by conduits 33c, 34c and the separating land carrying a passage 28c connected to the output of a pump (not shown). In the neutral position of the valve the passage 28c is connected as shown by arrows 36 to the grooves 33, 34 connected to the pump inlet. The land 30 and groove 34 may be so shaped to provide a gradual cut-off, Figs. 8 and 9 (not shown) (see Group XXIX). An extension 15c of the shaft 15a carries Belleville washers 45, 48 by means of tapered roller bearings 38, 39 (see Group XXXIV), axial movement of the shafts 11, 15a caused by reaction between the gearing 15, 13 actuating the control valve and stressing the washers 45, 48, and the latter urging the shafts into a central axial position. The washers 45, 48 can be variably stressed by an adjusting cap 49 having a locking device 57 and the valve parts adjusted by shims 48. In a modification, Fig. 5 (not shown), the tapered roller bearings are replaced by a single roller bearing, the shaft 15a being machined to form the inner race.
Patent GB-1514525-A (GB)
Title: Soil cultivating machines
IPC: A01B33/06
Filed: 1975-09-10
Abstract: 1514525 Rotary soil working machines C VAN DER LELY NV 10 Sept 1975 [13 Sept 1974] 37307/75 Heading A1B The subject-matter of this Specification is described in Specification 1514524, but the present claims are concerned with the directions of rotation of the assemblies, and the provision of freely pivotal soil working members on each assembly.
Patent GB-1263169-A (GB)
Title: Herbicidal composition
IPC: A01N39/00
Filed: 1969-07-24
Abstract: 1,263,169. Herbicides containing aryloxymonothioacetic esters. HOKKO CHEMICAL INDUSTRY CO. Ltd. 24 July, 1969 [31 July, 1968; 15 Aug., 1968 (2); 14 July, 1969], No. 37351/69. Heading A5E. [Also in Division C2] Herbicidal compositions contain as essential active ingredient an aryloxymonothioacetic ester represented by the formula (1) wherein R, denotes a methyl radical and R 2  denotes a methyl or ethyl radical together with a carrier or diluent for the active ingredient and if the carrier or diluent is a solvent, a surface active agent. The above general formula denotes both the aryloxymonothioacetic S-esters and O-esters. The active aryloxymonothioacetic esters specified are 2-methyl-4-chlorophenoxymonothioacetic O-methylester, 2- methyl - 4 - chlorophenoxymonothioacetic O - ethylester, 2-methyl-4-chlorophenoxymonothioacetic S-methylester and 2-methyl-4-chlorophenoxymonothioacetic S-ethylester. The active ingredient may be employed with other known weed killers, e.g. 2, 4-dichlorophenyl-4-nitrophenyl ester; 2, 4, 6-trichlorophenyl-4-nitrophenyl ester; 2, 4-dichloro-6-fluorophenyl-4- nitrophenyl ester; 4, 6-bis (ethylamino)-3-methylthio-1, 3, 5-triazine and 4, 5, 7-trichlorobenzthiadiazole-2, 1, 3. The aryloxymonothioacetic esters are particularly effective against weeds which grow in paddy fields and in this respect it is preferable to apply the aryloxymonothioacetic ester in an amount 1-20g/are when used alone and in amount 0.5-10g/are when used in combination with known herbicidal compounds. The herbicidal compositions may be used in the form of a dust, emulsion, wettable powder, granules or aerosol.
Patent GB-893537-A (GB)
Title: Low temperature storage facilities for liquefied gases
IPC: F17C13/08
Filed: 1960-11-01
Abstract: 893,537. Storage containers for liquefied gas. CHICAGO BRIDGE & IRON CO. Nov. 1, 1960 [Jan. 11, 1960], No. 37429/60. Class 8(2). A vessel 10 for storing liquefied gas is supported on columns 13 which are stressed in the unloaded and warm condition of the vessel to reduce the magnitude of the bending stresses which would otherwise be induced in the column when the vessel is being cooled to its operating temperature. An outer vessel 11 is spaced and insulated from the inner vessel 10 and is supported on columns 15 which are provided with base plates 16 and are supported on foundations 17, the columns 13 having base plates 14 which are slidably supported on the base plates 16. After the vessel 10 has been tested by being filled with a liquid preferably having a higher specific gravity than the liquefied gas, the test liquid is withdrawn and the columns 13 are displaced to compensate for the calculated contraction amount of the vessel 10 by jacking means 18 applied preferably at the base plate 14. The inner vessel 10 and at least a part of each of its supporting columns 13 are made of materials not embrittled at the service temperatures, e.g. aluminium, stainless steel and nickel steel alloys.
Patent GB-925052-A (GB)
Title: Improvements in inductive audio communication systems
IPC: H04B5/00
Filed: 1958-03-06
Abstract: 925,052. Inductive signalling. I. C. MATTHEWS, and A. H. M. L. MARTIN. June 5, 1959 [March 6, 1958], No. 37474/57. Class 40 (5). The main station of an audio inductive-loop signalling system comprises a transmitter Tr, Fig. 2A, energizing the inductive outer loop OL, and a receiver ARr responsive to signals from portable transmitter-receivers P, induced in one or the other of twin inner loops IL connected in anti-phase to cancel out unwanted interference. The inner loops cover substantially the same area as the outer loop and may comprise the respective loops formed by a single cable in figure-eight form, Fig. 2B (not shown), in which case loop balancing is achieved by altering their relative sizes. The portable units P may consist simply of a differential carbon microphone M, Fig. 1C, earphones E, and battery B connected as shown to a transmit/ receive multi-turn loop TL which may form a waist or leg band on the operator. Ferro-dust cores may be used, and a switch provided to cut out the battery during reception. Fig. 1A shows a further form of the unit P, and in further forms, Figs. 1B, 1D (not shown), the loop is connected via a matching transformer to the microphone and earphones.
Patent GB-873053-A (GB)
Title: Coating refractory sheets
IPC: C03C17/25
Filed: 1958-11-21
Abstract: Refractory, e.g. glass, sheets are provided with a non-uniform metal oxide film by the method of the parent Specification in which the angle between the axis of the spray and the plane of the sheet is from 15 to 45 degrees.  Specification 704,793 and U.S.A. Specification 2,061,107 are also referred to.
Patent GB-325920-A (GB)
Title: Improvements in and connected with combined gas and oil burners
IPC: F23D17/00
Filed: 1928-12-20
Abstract: 325,920. Babcock & Wilcox, Ltd., (Babcock & Wilcox Co.). Dec. 20, 1928. Liquid, gaseous, and pulverulent fuel furnaces. -In a furnace consuming liquid, gaseous, and powdered fuels an air register 17 is slidably mounted on guide rails 18 so that it may be easily removed through an opening 34 in the air box wall 33. The air register comprises a number of slightly curved doors 32 carried by arms 31 which can be swung about their pivots by rotating a slotted ring 25 by means of pinion 28 fitted with an operating handle 29. The ring 25 is revolubly mounted in a coverplate 20 which is bolted to the flange 23 of the air register and to the wall 33. A circular cover 38 revolubly and removably mounted in the plate 20 is formed with a central bearing 47 in which is mounted a burner for gas alone or gas carrying powdered fuel. The burner comprises two coaxial tubes 50, 53, fitted with an annular burner head 60 provided with a series of holes 61 or an annular slit arranged at an angle of about 60‹ to the axis of the tubes. The tubes 50, 53, screw into a hollow member 55 communicating with the fuel supply tube 57. An oil spraying burner 62 may be secured by a yoke 63 inside the tube 53. The burners project into a metal cone 12 which fits in an opening in the burner front and is formed with a gapped lip 15 over which are fitted removable bricks or tiles 16. The air is directed on to the burner flame by inclined vanes 14 and by a deflector 68 which may be withdrawn to the position shown in Fig. 2 when gas alone is being burnt. When oil alone is being burnt the deflector is moved to the position shown in Fig. 7 and by means of a three-way valve 58 additional air may be supplied through the burner head 60, When the oil burner is removed a plug 74 may be inserted in the tube 53. A ring 25<1> spaced away from the plate 20 shields the door mechanism from the heat of the burner flame.
Patent GB-946213-A (GB)
Title: Improvements in or relating to electric power supply arrangements
Inventor: DAVEY PETER GORDON
IPC: G05F1/585
Filed: 1960-11-02
Abstract: 946,213. Automatic voltage control. GENERAL ELECTRIC CO. Ltd. Jan. 25, 1962 [Nov. 2, 1960], No. 37681/60. Heading G3R. A power supply arrangement for providing different stabilized potentials on each of four supply lines 1, 2, 3 and 4 relative to an earth line 5 comprises a known stabilizer circuit 11, 12, 13 or 14 which is associated with each supply line and which includes a series impedance element, e.g. a transistor, 15, 16, 17 or 18 and an error sensing amplifier 19, 20, 21 or 22. The current flowing in lines 1, 2, 3 or 4 is prevented from exceeding a pre-determined value by limiting circuits 25, 26, 27 and 28,which, see circuit 25, each include a transistor 29 connected to its associated impedance element, a low value resistor such as 24 carrying the line current, a Zener diode 33, and a positive potential supply line 35. A variable resistor 31 is adjusted so that transistor 29 is just not conducting when the maximum current is flowing; when this maximum current is exceeded, the voltage drop across resistor 24 increases and transistor 29 begins to conduct whereby the associated series impedance element is biased to reduce the current. The subsequent fall in potential in any affected line 1, 2, 3 and 4 is then used to switch off the whole arrangement, and so prevent possible damage to the equipment being supplied; the circuit for achieving this is described, and includes a transistor 39, a Zener diode 37 connected.to line 1, a resistor 48 connected to line 4, and a transistor 41 connected to each of the impedance elements 15, 16, 17 and 18. The arrangement is such that transistor 39 conducts when the potential between any line and earth decreases whereby transistor 41 is also caused to conduct so that a positive potential is applied to all the impedance elements which results in a rapid switch-off of the lines 1, 2, 3 and 4. Specification 946,212 is referred to.
Patent GB-883283-A (GB)
Title: A new guanidine compound
IPC: C07D295/13
Filed: 1959-06-10
Abstract: The invention comprises the compound having the formula <FORM:0883283/IV (b)/1> and acid addition salts thereof and pharmaceutical compositions containing these compounds.  The compounds are prepared by treating 2 - heptamethyleneimino - ethylamine with an S-alkyl isothiourea or salt thereof and, if desired, converting the product into its acid addition salts.  The products have hypotensive properties.  Specification 883,284 also is referred to.ALSO:Pharmaceutical compositions containing the compound of the formula <FORM:0883283/VI/1> or acid addition salts thereof with inorganic and organic acids and suitable diluents may be in the form of tablets, dragees, capsules, solutions, emulsions or suspensions.
Patent GB-1174360-A (GB)
Title: 6,16-Dimethyl-21-Fluoro-Steriods of the Pregnane Series.
Inventor: TAUB DAVID
IPC: C07J5/00
Filed: 1967-12-22
Abstract: 1,174,360. 16α,17α - Oxido - 16# - methyl- 21 - fluoro - pregnane compounds. MERCK & CO. Inc. 22 Dec., 1967 [29 Dec., 1966], No. 37799/69. Divided out of 1,174,358. Heading C2U. The novel 16α,17α - oxido - 6α,16# - dimethyl- 21 - fluoro - pregn - 4 - ene - 3,20 - dione is prepared by reacting 3#-acetoxy-6,16-dimethyl- 21 - fluoro - pregna - 5,16 - dien - 20 - one with alkaline H 2 O 2  to produce the novel 3#-hydroxy- 16α,17α - oxido - 6,16# - dimethyl - 21 - fluoropregn - 5 - en - 20 - one and subjecting this to Oppenauer oxidation.
Patent GB-1385288-A (GB)
Title: Production of fuels
IPC: C10G47/16
Filed: 1973-08-09
Abstract: 1385288 Hydrocracking TEXACO DEVELOPMENT CORP 9 Aug 1973 37827/73 Heading C5E In a process for producing simultaneously a motor fuel and a jet fuel, both of high quality, a hydrocarbon oil is subjected to successive steps of treament with hydrogen and catalyst. The first treatment serves to desulphurize and to denitrogenate, and the entire effluent is passed to the next step in which the catalyst comprises a metal of Group VIII on a support comprising 15 to 60% of a zeolite treated to reduce its alkali-metal content and an amorphous inorganic oxide, and which serves to crack the oil. The product of this second step is separated into a motor fuel, a jet fuel and a residuum, this residuum is hydrocracked in a third step over a catalyst of nickel on a cracking support, and motor fuel is recovered from the product. The feed may be a straight-run gas oil, a cracked gas oil, an atmospheric residuum, a shale oil, a tar-sand oil, a delayed-coker gas oil, a crude oil or mixtures of these. The hydrofining catalyst may be an oxide or sulphide of V, Cr, Mo, W, Fe, Co, Ni or mixtures of these, on a support of silica, alumina, zirconia, magnesia and mixtures of these, alone or in conjunction with zeolites. The metal of Group VIII in the first hydrocraoking catalyst may be a noble metal or one of the iron group, which may be used in conjunction with a metal of Group VI. These metals may be in the elemental form or as oxides, sulphides or tellurides. The zeolite may have its alkali-metal content reduced by repeated ion-exchanges with an ammonium compound, alternating with calcinations. The amorphous oxide may be silica, alumina, magnesia, zirconia or beryllia, and may have been treated with an acid, e.g. HF. The hydrogen separated after the first hydrocracking step may be purified of NH 3  and H 2 S, and recycled to the hydrofining step. Fresh hydrogen is added for the second hydrocracking step, in which the nickel of the catalyst is preferably in oxide form on a support which may be of zeolite low in alkali metals or amorphous oxide or a combination of these, and in particular may be the same as the support of the catalyst for the first cracking step. Hydrogen separated from the effluent may be recycled to the second cracking step, or both to that step and the hydrofining step. The examples compare the process of the invention with a conventional process.
Patent GB-1044166-A (GB)
Title: Improvements relating to driers
Inventor: HANCOCK WILLIAM
IPC: F26B21/00
Filed: 1963-09-26
Abstract: 1,044,166. Drying pottery. VICTORIA HEATING & VENTILATING CO. Ltd. Sept. 22, 1964 [Sept. 26, 1963], No. 37856/63. Heading F4G. Apparatus for drying ceramic ware 11 comprises a series of superposed spaced annular shelves 10 mounted for rotation about a vertical axis in a housing (not shown), through which shelves hot air is directed downwardly on to the articles through air delivery apertures having jet tubes detachably mounted therein. The tubes may be of synthetic plastic, or of metal screwed or otherwise detachably secured or positioned within the apertures and the internal profiles of the tubes may be cylindrical or of Venturi section. Some of the apertures may be closed off by detachable unbored plugs.
Patent GB-1113169-A (GB)
Title: Disc brake assemblies for motor vehicles
IPC: F16D65/14
Filed: 1966-08-25
Abstract: 1,113,169. Disc brakes. GENERAL MOTORS CORPORATION. 25 Aug., 1966 [1 Oct., 1965], No. 38120/66. Heading F2E. In a disc brake assembly for motor vehicles, an internally screw-threaded sleeve 26 is freely rotatable in a chamber 28 of a caliper housing 16 by an actuator lever arm 14 and a screw 24 is movably mounted in the internally-threaded sleeve 26 which is, adapted to move a plate 22 towards a friction pad 20 on one side of the disc, the reaction forcing the caliper housing to move axially in the opposite direction to move the opposite friction pad into frictional contact with the rotating disc 18. The lever arm 14 is attached to a hand brake lever cable linkage and the brake may be actuated as a main brake by the action of hydraulic pressure. The reaction force on the sleeve 26 is taken up by a wave washer 34 and a needle bearing 36 such that when the actuating force tending to rotate the lever 14 is released the energy stored in the wave washer 34 allows the sleeve 26 to move the screw 24 and the plate 22 away from the friction pad 20 by a small amount. The plate 22 is maintained in light engagement with the friction pad 20 by the force of a spring 32 transmitted through a ball 30 to the end of the screw 24. The spring 32 and the ball arrangement 30 constitute an automatic wear adjusting mechanism.
Patent GB-902903-A (GB)
Title: Improvements relating to the production of polystyrene
Inventor: PATERSON WILLIAM CRAWFORD
IPC: C08F12/04
Filed: 1959-11-11
Abstract: Non-flammable products are obtained by catalytically polymerizing styrene or a homologue of styrene (e.g. a -Me-, o, m or p-diMestyrenes) in the presence of one or more of trichlorethyl, tris(dichlorethyl), tris(dichlorpropyl), trichlorpropyl and trichlorphenyl phosphates.  The polymerization may be by bulk, solution, bead or pearl or emulsion technique using peroxy or redox catalysts (e.g. ammonium persulphate or benzoyl peroxide).  The products find application as insulation.
Patent GB-1528740-A (GB)
Title: Phase modulators
IPC: G01D5/243
Filed: 1975-09-02
Abstract: 1528740 Phase modulators NEWALL ENG CO Ltd 2 Sept 1975 [4 Sept 1974] 38576/74 Heading H3R In a phase modulator suitable for use in a measuring apparatus, sinusoidally varying voltages in quadrature are derived from a transducer or transducers (not shown) co-operating with a moving element e.g. an illuminated grating, and applied to a first and second four-quadrant multipliers 1, 2 in combination with a further set of quadrature signals and the multiplier outputs are added at 9 to provide a signal at 10 whose phase changes in accordance with the amplitude variation of the signal voltages at 3, 5. The output of each multiplier may be linearized by incorporating a negative feed-back loop (Fig. 2 not shown) including a phase sensitive rectifier responsive to the multiplier output and a corresponding one of the signals at 4, 6.
Patent GB-1350716-A (GB)
Title: Method of providing a layer having a low secondary emission factor  on an electron tube anode
IPC: H01J19/00
Filed: 1972-08-18
Abstract: 1350716 Electrode materials PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 18 Aug 1972 [21 Aug 1971] 38631/72 Heading H1D To reduce secondary emission from an electron tube anode with an external Ni surface a dark coloured coating is formed by heating the anode in air at 350-400‹ C., then in a reducing atmosphere at 700-800‹ C. to clean the surface, applying a coating containing Ni and soot and heating to 700-800‹ C. in a reducing atmosphere. The coating is applied by dipping a cleaned Ni coated Fe anode in a suspension of carbonyl Ni in methyl isobutyl ketone and sintering to form a Ni layer. A suspension of soot is sprayed on and the anode finally heated. The soot may be included in the Ni suspension. A pentode comprises a cathode 1, control, screen and suppressor grids 2, 3, 4 and an anode consisting of inner and outer portions 6, 5. The inner portions are coated by the method above, the outer portions which are of aluminized Fe are rendered dark by alloying the Al and Fe or applying a C coating.
Patent GB-869180-A (GB)
Title: Preparation of fiber-forming systems and compositions thereby obtained
IPC: C08F271/00
Filed: 1957-12-12
Abstract: A spinnable fibre-forming composition comprises polymers and/or copolymers of a monoethylenically unsaturated acrylonitrile containing monomeric material and a graft copolymer of the said monomeric material with a polymeric material having a functional utility, dispersed or dissolved in an aqueous organic solvent comprising water-containing ethylene carbonate, dimethyl sulphoxide or butyrolactone.  Monomeric materials specified are acrylonitrile or mixtures thereof with monomers such as allyl alcohol, vinyl acetate, methacrylamide, methacrylonitrile, methyl, ethyl and dimethylaminoethyl acrylates, acrylic, vinyl acetic and itaconic acids, fumaronitrile, vinyl pyridine, 2-vinyl-5-ethyl pyridine and ethylene and allyl sulphonic acids and their salts.  Polymeric materials specified are polymers and copolymers of vinyl pyrrolidone, vinyl caprolactam, vinyl piperidone, vinyl pyridine, vinyl acetate, vinylbenzene sulphonic acid and/or its salts, ethylene sulphonic acid, vinylbenzyl-trimethyl ammonium chloride, vinyl methyl ether, N-acryloyl taurine and its salts, acrylamide, aminoethyl-methacrylate hydrochloride, sulphoethyl acrylate, sulphopropyl acrylate and maleic anhydride, and polyvinyl alcohol. The compositions are made by polymerizing the monomeric material in solution in the aqueous organic solvent containing the polymeric material dissolved therein. The polymerization may be carried out with the aid of azobisisobutyronitrile as a catalyst. In the examples processes employing polyvinyl pyrrolidone as the polymeric material, fibres made from the resulting products being dyeable with acid, basic, direct, acetate and vat dyestuffs.