baber/WOPTO huggingface dataset:
Patent GB-1317115-A (GB)
Title: Lightning arrester unit
IPC: H05K3/28
Filed: 1971-07-02
Abstract: 1317115 Circuit assemblies LICENTIA PATENT-VERWALTUNGS GmbH 2 July 1971 [3 July 1970] 31211/71 Heading H1R Lightning arresters 1 are held in contact springs 2 which are supported on a board 3. The inner contact springs 8 are electrically connected together by a printed circuit earth path (5<SP>1</SP>), (Fig. 3, not shown), on the other side of the board, while the outer contact springs 9 are separately connected by further paths (5) to a plug 7 for connection to the circuits to be protected. The board is preferably of epoxy resin reinforced with glass fibre and the copper printed circuit is coated with a synthetic varnish having high insulating properties. The contact springs may be replaced by soldering eyelets.
Patent GB-1313344-A (GB)
Title: Processing a differential multi-phase modulated signal
IPC: H04L27/233
Filed: 1970-06-26
Abstract: 1313344 Telegraphy TELEFONAKTIEBOLAGET L M ERICSSON 26 June 1970 [2 July 1969] 31230/71 Heading H4P A synchronizing signal is generated from a differential multi-phase modulated signal by phase comparing the signal with the signal delayed by a fraction of a signal element length. In the demodulator DR of the receiver shown, a 4-phase differentially modulated signal, where the signal elements represent the binary pairs 00, 01, 11, 10 by phase shifts of 0, 90, 180 and - 90 degrees relative to the preceeding element, is multiplied in multipliers P1, P2 by the signal delayed in D1, D2 by one element length and phase shifted by 45 and - 45 degrees respectively. The resulting product when filtered of high frequencies provides positive or negative signals B1, B2 which are decoded to indicate at output U D  the binary pair. To generate the synchronizing signal U T  the input signal is compared with the input signal delayed in D 1 by half a signal element in a phase comparator PD consisting of a multiplier P3 and filter F3. The differential output provides a synchronizing signal U T  at the beginning of each signal element. To maintain the synchronizing signal when there is a succession of elements of the binary pair 00, i.e. no phase changes in the output signal there or provided either a single tank circuit or two series-connected tank circuits with different Q-factors.
Patent GB-1018779-A (GB)
Title: Production of pyridine
Inventor: HALL REGINALD HAROLD
IPC: B01J21/06
Filed: 1963-08-08
Abstract: Pyridine is prepared by the catalytic reaction in the vapour phase and at elevated temperatures of ammonia and one or more compounds of the formula <FORM:1018779/C2/1> wherein R is hydroxy or amino, and R1 is alkoxy, acyloxy or hydrogen, oxygen being included in the reaction mixture.  Steam also is preferably present.  The catalyst may be a dehydration or cracking catalyst, may also possess an oxidative function, and may be used in a fluidized condition.  The pyridine may be recovered by distillation or extracted with benzene or a homologue. Specified reactants are tetrahydrofurfuryl al alcohol and amine, and 3,4 - dihydro - 2H - pyran or a 2 - alkoxy or acyloxy derivative thereof.  Catalysts include alumina, silica-alumina, and their mixtures with oxides of Cd, Pb, Zn, Mo, Ti, Zr, Mn, V, and elements of the La series or with salts, e.g. lead fluoride or sodium or potassium carbonate or sulphate.ALSO:Catalysts useful in the production of pyridine are SiO2, Al2O3 or mixtures thereof if desired together with CdO, PbO, ZnO, MoO3, TiO2, ZrO2, or a R.E. metal oxide. Alternatively metal salts may be added to SiO2 and/or Al2O3, e.g. PbF2, Na2CO3, K2CO3, Na2SO4 or K2SO4. Conventional methods of preparation are described.  Regeneration of spent catalyst may be effected by passage thereover of air or air and steam.  In examples, the use of Ce, La, Di*, Pr, Nd, Zr, Ti, PbO, Cd, V2O5+MnO2, Zn, H3PO4, alkali metal carbonates and sulphates, PbF2 is described.
Patent GB-1042178-A (GB)
Title: Narrowing the molecular weight distribution of polyolefins
Inventor: TRIESCHMANN HANS GEORG
IPC: C08F8/50
Filed: 1963-08-08
Abstract: The molecular weight distribution of a polyolefin is narrowed by a process wherein the polyolefin is brought for 0.001 to 100 seconds into a shear gradient whose speed gradient is from 1500 to 200,000 seconds-1.  The process may be effected in a screw extruder, a high-speed kneader or a roll mill, and may be in the presence or absence of oxygen.  Stabilizers (e.g. see Example 1) also may be present.
Patent GB-1469865-A (GB)
Title: Hydraulic motors
IPC: B62D5/097
Filed: 1974-07-16
Abstract: 1469865 Rotary positive-displacement fluidmachines TRW Inc 16 July 1974 [27 Aug 1973] 31444/74 Heading F1F [ Also in Division F2] In a reversible hydraulic motor of e.g. the gerotor type, a working-fluid auxiliary outlet passage 212 extends from a bore 208 that is closed at one end or the other by a corresponding valvemember 222, or 226, according to the pressure differential between passages 204, 210 connected to working-fluid main inlet and outlet ports 180, 188, respectively, the valve-members being interconnected by a rod 228. A non-return valve 216 may be provided at the outlet end of the passage 212. The valve-members may be biased by springs 232, 234, Fig. 4, so that both ends of the bore 208 are open until the pressure at the main inlet port can depress the respective valve-member. The flow of working fluid to and from the spaces between the stator 80 and rotor 82 is controlled by a valveplate 110, which is rotated in a planetary manner by a splined shaft 92 interconnecting the rotor and an output shaft 18. The motor is intended to be incorporated in an hydraulic transmission system, Fig. 1 (not shown), the passage 212 being connected to a heat-exchanger, which cools the working fluid.
Patent GB-932328-A (GB)
Title: Process for the manufacture of esters of alpha-cyanoacrylic acid
IPC: C09J4/00
Filed: 1961-09-01
Abstract: Monomeric a -cyanoacrylic esters are made by condensing p formaldehyde, or a polymer thereof, with between one and two moles of the corresponding a -cyanoacetic ester in solution with an organic solvent which forms an azeotrope with water, to form an intermediate polymer, the water formed is distilled off as an azeotrope with the solvent, the polymer is heated to depolymerise and liberate the monomeric a -cyanoacrylic ester and the corresponding a a 1-dicyanoglutaric diester and then distilling off the a -cyanoacrylic ester without decomposing the a a 1-dicyanoglutaric diester.  In the preparation, the a -cyanoacetic ester may be replaced by the corresponding a a 1-dicyanoglutaric diester in a ratio of one mole diester to two moles acetic ester.  The intermediate polymer of formula:- <FORM:0932328/IV(a)/1> in which R is an alkyl, alkenyl, cyclohexyl or aryl group, and n is 1, 2, 3, or 4, may be decomposed by heating under subatmospheric pressure and in the presence of a polymerisation inhibitor, and the liberated a a 1-dicyanoglutaric diester may be recycled to the initial polymer forming step.  The quantities of reactants are preferably such as to provide a polymer in which n is 4, and the reaction may be at 50 DEG -90 DEG C. in the presence of a basic condensation catalyst and the water azeotrope forming solvent.  Solvents include benzene, toluene, and heptane. Polymerization inhibitors include polyphosphoric acid, phosphorus pentoxide, antimony pentoxide, picric acid, hydroquinone, t-butyl catechol, metaphosphoric acid, maleic anhydride, ferric chloride, sulphur dioxide, nitric oxide, and hydrogen fluoride.
Patent GB-1082416-A (GB)
Title: 3,17-disubstituted-5,6-dichloroandrostanes
IPC: C07J41/00
Filed: 1966-07-13
Abstract: Novel steroids of the formula <FORM:1082416/C2/1> (where Z is the trivalent radical >N.CO-; R1 is H or C1- 7 alkyl; and R11 is H, C1- 7 alkyl or cycloalkyl) and their 3-acetates, and the novel 3b  - hydroxy - 5#x,6#x - dichloroandrostane-17b -carboxylic acid and its 3-acetate are prepared from the corresponding D 5-compounds and chlorine.  Other 3-acylates are prepared similarly, and any 3-acylate may subsequently be hydrolysed to the 3b -ol, which may be reacylated. The 17-carboxylic acids may be converted to their amides via the acid chlorides before or after chlorination.
Patent GB-476840-A (GB)
Title: Improvements in chairs
IPC: A47C7/44
Filed: 1936-11-18
Abstract: 476,840. Adjustable seats. BASSICK CO. Nov. 18, 1936, No. 31579. Convention date, July 30. [Class 52 (ii)] Adjusting means for a chair back 43 pivoted to a supporting frame 16 at 38 comprise crossing slots 48, 50 on the frame 16 and chair back respectively, and a clamping bolt 51 passing through the intersection of the slots so that pivoting of the back causes a scissors action of the slots on the bolt, the angle between the slots remaining approximately constant at a value such that the bolt when slackened may be moved in the slots under the scissors action by pressure on the chair back at any setting in its range of angular adjustment. The slots 48 on the frame 16 are curved and the slots 50 are straight and are provided in the sides 36 of a yoke member 37 on which the back 43 is vertically adjustable by a bolt 44 taking in a slot 45. The bolt 51 has a head 52 engaging one of the sides 36 and a squared portion 53 engaging one of the slots 50 to prevent rotation. A spanning sleeve 54 is threaded on the bolt between the sides of the frame member 16 and a further sleeve 55 is acted on by a nut 56 to clamp the parts together. The seat 10 is fixedly secured by spider arms 11 to side portions 13 of a bearing post 12, and the tiltableframe 16 carrying the back 43 is pivoted to the post 12 at 18 and provided with stops 20, 21 coacting with rivet heads 14 to limit the tilting movement. A spring 31 bears at one end upon a forwardly projecting part 29 of the post 12 and at the other end upon a nut 35 on a bolt 27 having knife edges 25 engaging V-shaped pockets 24 in a bent-up portion at the upper part 15 of the frame 16. The spring normally maintains the back supporting member in the non-tilted position and its tension may be adjusted by the nut 35.
Patent GB-1481318-A (GB)
Title: Gas lubricated bearing assemblies
IPC: F16C17/04
Filed: 1975-05-14
Abstract: 1481318 Bearings UNITED KINGDOM ATOMIC ENERGY AUTHORITY 14 May 1975 [17 July 1974] 31749/74 Addition to 1380810 Heading F2A A gas lubricated bearing assembly 20 comprises a shaft 28 and sleeve 21, where the sleeve is fixed and the shaft rotatable, the bearing surfaces being such that a gas bearing film is maintained therebetween, the relative axial positions of the shaft and sleeves being maintained by a hydrostatic gas end thrust bearing formed by a cushion of gas in a trapped space at an end of the shaft and by an oppositely acting grooved hydrodynamic gas thrust bearing defined between co-operating radially extending faces 31 and 32 on the shaft and sleeve with means 42 for supplying pressurized gas to the inner end of the radial faces, wherein the stationary thrust plate 51 having front face 32 is formed with a cylindrical extension 57 on its rear face which fits within a resilient ring 53 which in turn fits within an annular recess 54 in support member 50.
Patent GB-1515306-A (GB)
Title: Roof means for vehicles
IPC: B60J7/06
Filed: 1975-10-20
Abstract: 1515306 Vehicle roofs EDWARD ROSE (BIRMINGHAM) Ltd 20 Oct 1975 [18 July 1974] 31793/74 Heading B7B In a folding vehicle roof supported by a number of cross members, a transverse tubular pocket 13, for receiving a cross member 11, is attached at its upper edge 15 to a flexible cover and connected at its lower edge to a flexible lining 12 by a flap 14 integral with the pocket. The cover and sleeve preferably comprise a plastics material connected along attachment line 15 by high frequency welding. Attachment of lining 12 to the flap 14 is effected by stitching. The pocket 13 is open-ended and the ends of the cross member 11 are received in pockets 18, Fig. 2, attached to double thickness side portions of the cover formed by turning over the marginal edge portions thereof.
Patent GB-1008659-A (GB)
Title: Process for the production of homogeneous mixtures of rubber and silicic acid
IPC: C08J3/215
Filed: 1962-08-20
Abstract: Homogeneous mixtures of rubber and silicic acid are prepared by common precipitation of synthetic rubber latices and alkali silicate solution with acids in the presence of neutral electrolytes, the rubber concentration in the initial dispersion being less than 100 grams per litre.  The concentration is preferably less than 70 grams per litre and even more preferably less than 55 grams per litre.  The latices may contain an emulsifier comprising more than 75% of one or more salts of resinic acids.  Specified latices are copolymers of diolefins such as butadiene with styrene, acrylonitrile and acrylic acid esters. The product may be mixed with the usual compounding ingredients and vulcanized.
Patent GB-1374493-A (GB)
Title: Refractory vessels
IPC: C04B35/66
Filed: 1972-07-07
Abstract: 1374493 Refractory linings for vessels NIPPON STEEL CORP 7 July 1972 [10 July 1971] 31855/72 Heading B5A The refractory lining in an open vessel, such as a ladle, tundish or tapping spout used for molten metal, is formed by charging the vessel 1 with particulate refractory material; slowly pushing a male mould member 4 into the material whilst vibrating the mould member to displace and compact the material to form the lining 3; withdrawing the mould member and drying and firing the lining. The mould member 4 may include a plurality of vibrators 5 which may not all vibrate at the same frequency. It may also carry extra loading weights 7. Suitable refractory materials for both components are silica, pyrophyllite, chamotte, mullite, alumina, magnesia or silicon carbide whilst the matrix materials may also include graphite, carbon, zircon and pitch. Water glass, pulp waste, phosphatic binders and water or tar may also be included. Several examples of appropriate compositions and operating conditions are given and in some instances additional refractory material is introduced after an initial period of compacting, additional weights also being placed in the mould member.
Patent GB-868275-A (GB)
Title: Improvements in or relating to light modulators
Inventor: DRAKE CYRIL FRANCIS
IPC: H04B10/50
Filed: 1959-09-18
Abstract: 868,275. Light modulating devices. STANDARD TELEPHONES & CABLES Ltd. Sept. 18, 1959, No. 31864/59. Class 40(3) [Also in Group XXXVI] A light-modulating device, which makes use of the variation of the reflection coefficient of the surface of a semi-conductor body with the number of free charge carriers contained therein, comprises an assembly of semi-conductor material arranged to present a surface made up of regions 6, 7, 8 of N-type material and regions 2, 3, 4 of P-type material, means being provided to apply between ohmic contacts 10 and 11 a reverse bias sufficient to cause an appreciable proportion of the surface to be occupied by depletion regions and an alternating signal whereby the depletion regions may be varied to cause a corresponding variation of visible or infra-red light reflected from the surface. Maximum depth of modulation is produced if the whole of the surface is covered by depletion regions. To approach this ideal, strips 2-4 and 6-8 are each made 1 thousandth of an inch wide. As an alternative to the arrangement illustrated, where strips 6-8 are joined by a common strip 5 bearing a single ohmic connection 11, a separate ohmic connection may be made to each of strips 6-8 and the connections joined in parallel. Reference is made (without giving details) to the use of circular strips. An increase in the depth of modulation may be achieved by increasing the number of surface reflections. A multiple reflection modulator based on two reflecting surfaces is described with reference to Fig. 2 (not shown).
Patent GB-459906-A (GB)
Title: Collapsible tyre building drum
IPC: B29D30/24
Filed: 1935-11-18
Abstract: 459,906. Moulding wheel tyres. WINGFOOT CORPORATION, Wilmington, Delaware, U.S.A. Nov. 18, 1935, No. 31872. Convention date, Feb. 11. [Class 87 (ii)] A collapsable tyre-building drum comprises key and intermediate sections which are pivoted to a rotary support or to a link pivoted to the support. Links are pivoted to the sections and to two collars coaxial with the support and coupled together so that rotation of the collars relative to the support swings first the key and then the intermediate sections inwards to collapse the drum. In the form shown in Figs. 1 and 4, key sections 21 and intermediate sections 25 are pivoted on pins 19 carried by arms 14, 15 of a spider 12 keyed to a shaft 10. The sections 21 and 25 are coupled respectively to collars 38 and 28 by links 43 and 34 and hooks 46 on sections 21 engage pins 47 on sections 25. The collars are normally locked together by a spring- pressed bolt 57, Fig. 2, and the collar 28 is locked to the spider 12 by a taper-ended pin 31, Fig. 6. To collapse the drum, the bolt 57 is withdrawn and the collar 38 turned by a handle fitted over an extension 48 of the shaft 10 and having lugs to enter recesses 56 in the collar. When projections on the collar 38 reach the end of co-operating recesses in the collar 28, the latteralso is turned, the pin 31 being disengaged from the spider 12 and engaging a depression in the collar 38. The form shown in Fig. 14 is similar except that the pivot pins 80 for the sections 82, 83 are carried by links 79 pivoted at 71 to the spider arms 73 ; lugs 75 on the spider arms cooperate with flats 78 on the links 79 to limit rotation thereof. When the drum is collapsed the pivot pins 80 are swung inwards by links 95 pivoted thereto and to the collar corresponding to the collar 28. In a modification of this form, the links 95 are made integral with the intermediate sections 83.
Patent GB-772305-A (GB)
Title: An improved process for controlling the texture produced during solidification in iron and steel alloys cast in chill-moulds
IPC: B22D27/02
Filed: 1954-11-04
Abstract: Iron and steel alloys containing lead are cast in cooled chill moulds made of austenitic steel, e.g. manganese steel containing about 1.2 per cent C, 12.14 per cent Mn, finely divided lead in the form of metal or a compound of lead being added to the melt during or immediately after pouring, and the alloy melt is subjected in the mould to the action of a rotating electro-magnetic field.
Patent GB-1285123-A (GB)
Title: Process and apparatus for vaporising liquefied natural gas
IPC: F17C9/04
Filed: 1970-07-01
Abstract: 1285123 Revaporizing liquefied gases BLACK SIVALLS & BRYSON Inc 1 July 1970 [22 July 1969] 31958/70 Heading F4P [Also in Division F1] In a L.N.G. revaporizing process wherein a stream 32 is passed through a bank 40 of coils 25 heated by gas turbine exhaust gas in a line 22 and wherein the so-vaporized N.G. is passed through a line 42 and a bank 50 of coils 14 heated by inlet air for the turbine, the temperature e.g. 10‹ F. of the N.G. in line 42 is such that little water ice is formed outside tubes 14 of bank 50 and further cooling of inlet air is effected by adding to the N.G. leaving bank 50 at 88 a further stream 38 of L.N.G. and passing it through a second bank 58 of tubes 14; the temperature of the mixed stream being such as to prevent ice formation outside bank 58. The N.G. leaving bank 58 at 100 is also mixed with L.N.G. in a line 64 and passed through tubes 14 of a bank 70 and the N.G. exhausted therefrom through a line 72 is heated at 71 and in part delivered through a consumer line 80 and in part through a fuel line 81 to the turbine 18 which drives an electric generator 20.
Patent GB-854710-A (GB)
Title: Voltage error indicating device for a source of alternating voltage
Inventor: SULLIVAN NEIL
IPC: H02H3/253
Filed: 1957-10-14
Abstract: 854,710. Protective arrangements. SPERRY GYROSCOPE CO. Ltd. Oct. 14, 1957, No. 31987/57. Class 38 (5). [Also in Group XXXV] A three-phase A.C. supply failure warning device, which may also disconnect or substitute alternative supplies, operates by comparing the supply after rectification with a D.C. reference voltage through a detecting circuit. A supply A, B, C has the B phase earthed, phases A and C being connected to an earthed neutral point through resistors 2, 3, 6, 7 and rectifiers 1, 5. A further similar pair of resistors 12, 13 are also connected to the neutral point through a transformer 9, 10 connected between phases A and C and rectifier 11. Capacitors 4, 8, 14 are provided for smoothing. The junctions between each pair of resistors are fed through rectifiers 15, 17 to a relay 18 which is connected to the D.C. reference source. When the voltage on any phase drops below a determined value the current through relay 18 operates a warning circuit or disconnects the supply. Rectifiers 15-17 may be replaced by transistors in order to utilize a less-sensitive relay.
Patent GB-425379-A (GB)
Title: An improved process of veneering
IPC: A47C4/40
Filed: 1933-11-16
Abstract: In a process of veneering or glueing, a paste consisting of a mixture of neutral salves together with a glue hardening agent is applied to the additions (of metal of wood), before the operation of glueing. This is stated to avoid penetration of the pores of the veneer by the glue or the formation of metallic salts in the case of metal.  A suitable composition comprises neutral soap, wool fat and petroleum jelly admixed with solutions of formaldehyde, potassium aluminium sulphate or hexamethylenetetramine.
Patent GB-984406-A (GB)
Title: Method and apparatus for making plastics tubing
Inventor: MAXSON ORWIN GENE
IPC: B29C48/90
Filed: 1963-08-13
Abstract: 984,406. Extruding plastics tubing. CONTINENTAL OIL CO. Aug. 13, 1963 [Oct. 30, 1962], No. 32017/63. Heading B5A. Plastics tubing 12 extruded from an extruder head 11 is passed through a perforated sizing bushing 14 within a cooling chamber 16 which is maintained at subatmospheric pressure whilst the interior of the tubing 12 communicates with the atmosphere through a vent 15 in the head 11.
Patent GB-286190-A (GB)
Title: Improvements in conveying or mechanical handling appliances
IPC: B65G13/00
Filed: 1927-11-29
Abstract: 286,190. Blades, J. Nov. 29, 1927. Disharge and feeding devices for endless-belt conveyers; roller-way conveyers.-A loading table A, Fig. 1, constructed and arranged to assume a loading position inclined to the conveyer is adapted to swing round to form a continuation of the conveyer so that goods pass from it unaided on to the conveyer. An unloading table a, Fig. 2, normally forms a continuation of the conveyer, but is tipped by the weight of the goods into the position shown, which is suitable for the manual removal of sacked goods, or until arrested by a plate 3a in which position the goods are thrown off automatically. Each table is provided with rollers B and with a pair of pivot bars d, D in order that it may be used at either end of the conveyer. The end boards c, C are detachable and may be attached to either end of a table.
Patent GB-137046-A (GB)
Title: Improvements in Gas Stoves.
Inventor: HUGO KOHORN
IPC: F24C3/08
Filed: 1919-12-22
Abstract: 137,046. Kohorn, H. Dec. 23, 1916, [Convention date]. Void [Published under Sect. 91 of the Act]. Gas stoves.-A burner consist.ing of a number of perforated gas pipes 2 extending from a gas chamber 1 is employed in connexion with a series of heat-accumulating plates 4, The chamber 1 and the bar 3 supporting the pipes 2, or one of them, have projections 7 for supporting and spacing apart the heat-accumulating plates, and have lugs 8, 9 by means of which they are supported on the walls of the fire-chamber. The burners may also be used in a closed stove built of Dutch tiles, and may be arranged in pairs or threes in any heating-apparatus. A modification comprises two sets of tubes 2, one on each side of a gas chamber 1, and two bars 3. Gas is supplied to the chambers 1 either directly or through a mixing-chamber as in a Bunsen burner.