baber/WOPTO huggingface dataset:
Patent GB-1327216-A (GB)
Title: Cutting tools
IPC: B24D3/02
Filed: 1970-09-04
Abstract: 1327216 Saws S A YALOF and R T WILLIAMS 4 Sept 1970 [16 Sept 1969] 42511/70 Heading B5L A cutting tool, e.g. a saw blade, comprises a supporting body and at the outer portion of the body a cutting edge comprising a matrix containing boron filaments. In one embodiment, Fig. 3, a circular saw blade comprises a cutting edge 31 with undercuts 32 bonded to an aluminium or fibreglass mandrel 30. The cutting edge may comprise chopped boron filaments in a matrix of epoxy resin, or silicon and tungsten carbide, or metal. In another embodiment inserts comprising chopped boron filaments in a matrix of metal, or  ceramic, or sintered silicon carbide and tungsten carbide, are brazed on to a steel mandrel. In a further embodiment a saw blade is built up from oriented tapes of boron filaments in a matrix of epoxy, polyimide, or phenolic resin.
Patent GB-1078206-A (GB)
Title: A method for lining existing dentures
IPC: A61K6/884
Filed: 1964-10-19
Abstract: An existing denture is lined with silicone rubber by a process comprising relining the denture with new acrylic material, applying a room temperature vulcanisable silicone rubber to the new acrylic material and vulvanising the silicone rubber.  In one embodiment the process comprises the steps of (1) taking an already existing denture (which is deficient in its gum contacting area) and applying an impression material to the gum-contacting surface thereof (2) taking a reline impression (i.e. new impression of the gum surface) (3) making a stone model of the gum contacting side of the denture by using the denture with the reline in it (4) making a counterpart of the stone model (i.e. a model of the reverse side of the denture to the gum contacting side) by pouring the mould forming material on said reverse side, (5) trimming the top surface of the counterpart and the bottom surface of the model so that they are both level, (6) removing the denture with the impression material (reline) and removing the impression material from the denture, (7) hollowing out the original gum contacting surface of the original denture, (8) applying new acrylic material to the hollowed out portion and allowing this to set, (9) priming the surface of the applied acrylic material and allowing the primer to dry, (10) seating the denture in the counterpart, (11) applying a room-temperature vulcanisable silicone rubber to the primed surface, (12) seating the silicone rubber coated surface on the model and applying pressure to press the counterpart and the model together, (13) fracturing the model when the silicone rubber is cured and recovering the relined denture. Alternatively the procedure can be carried out in a dental flask. The acrylic material is preferably methyl methacrylate and silicone rubbers having a p  basis of polydimethylsiloxane polymer with a minor proportion of silica filler and pigment paste may be used.
Patent GB-1423148-A (GB)
Title: Electric circuit breaker
IPC: H01H39/00
Filed: 1972-09-14
Abstract: 1423148 Actuation; interruption of electric circuits DEFENCE SECRETARY OF STATE FOR 5 Sept 1973 [14 Sept 1972] 42628/72 Heading H1N Rapid interruption of an electric circuit, especially a short-circuit fed by a homopolar generator, is achieved by electrical ignition of an explosive charge 7 contained within a two-element conductive member comprising a cone section 1 and a main body or petal assembly 2, the latter being constrcuted of segments 2a-2f formed by sawcuts 3 but united at 5 and bounded by a steel ring 6 pressed into position after all cuts have been filled and the two elements jointed with a low melting point metal alloy. After ignition of the charge the part sections 4 of the segments open as in Fig. 3 to produce a gap wide enough to clear any arc, and arc extinction can be assisted by injection of a spray of arcsuppression fluid such as a non-inflammable oil from a pot contained within the cone section 1 and pressurized through a non-return valve by the explosion of the charge.
Patent GB-1483906-A (GB)
Title: Fuel injection pumps for internal combustion engines
IPC: F02M41/12
Filed: 1974-10-02
Abstract: 1483906 Fuel injection pumps ROBERT BOSCH GmbH 2 Oct 1974 [3 Oct 1973]  42677/74 Heading F1A In a fuel injection pump having a reciprocable and rotatable pumping plunger 2 provided with a longitudinal distributer groove 26 which distributes fuel supplied thereto through a delivery valve 17 and a channel 21, in turn, to a plurality of supply channels 5, at least some of the remaining supply channels 5 are connected by an arcuate groove 31 arranged to communicate during each suction stroke with the delivery channel 21 through whichever of a plurality of longitudinal grooves 27 is in alignment with an outlet 23 from the channel 21. One of the grooves 27 is extended to form a groove 30 which permanently connects the arcuate groove 31 to an annular groove 28 connecting the lower ends of the grooves 27. The interconnection of the remaining supply channels balances out the differing residual pressures which can occur therein. Fuel enters the pumping chamber 6 during each suction stroke from a channel 8 and whichever one of the grooves 7 is aligned therewith. Delivery is terminated when the end of a plunger spill passage 33, 34 is no longer covered by an adjustable control sleeve 35.
Patent GB-1534569-A (GB)
Title: Overtemperature protective circuit for switching devices
IPC: H02H6/00
Filed: 1976-10-15
Abstract: 1534569 Temperature simulators CANADIAN GENERAL ELECTRIC CO Ltd 15 Oct 1976 [18 Dec 1975] 42870/76 Heading H2K An RC network simulating the thermal behaviour of a circuit breaker includes switch(es) 19, 22 for altering the time constant when a cooling fan for the circuit breaker is switched on.
Patent GB-929894-A (GB)
Title: Improvements relating to aircraft
Inventor: MACGREGOR PETER STEVENS
IPC: F16L37/23
Filed: 1960-12-14
Abstract: 929,894. Stud - and - socket fastenings. FLIGHT REFUELLING Ltd. Dec. 12, 1961 [Dec. 14, 1960], No. 42975/60. Class 44. [Also in Groups XXVIII and XXXIII] A dual purpose refuelling and load-lifting apparatus for aircraft (see Group XXXIII) has a sinker 54 attached to a receptor 12, 14 by balls 34 in receptor part 14 which are forced into groove 58 in sinker 54 by rotating a cam-ring 36 by means of a lever 40 biased by spring 128 in one of two slots in receptor 12, 14 corresponding to the released and locked positions of the balls 34. The sinker 54 has four integral pockets 76 housing spring-biased balls 78; a liquid transmitting nozzle 84 has four grooves 88 which are firstly aligned with balls 78, the nozzle is then inserted and rotated to bring the balls out of alignment with grooves 88, the balls then being in an annular groove 86; a pin 90, released by lever 94, enters one of four recesses 92 to locate the nozzle. The nozzle can be forcibly withdrawn in an emergency by the balls being forced into the pockets against the springs. With nozzle 84 removed, a load support 104, 106 can be attached to the sinker, Fig. 3. Four segmental flanges 108 are passed between corresponding flanges 110 on sinker 54, the support is then rotated to align flanges 108, 110, the support is then lowered with pins 112 on flanges 110 engaging slots in flanges 108; a spring- biased, manually released pin 112 enters one of the recesses 92 to finally locate the support. In the Provisional Specification studs on the sinker 54 pass through keyhole slots in the support 104 which is then rotated to lock it to sinker 54. Reference has been directed by the Comptroller to Specification 862,893.
Patent GB-1461967-A (GB)
Title: Securing fixing members
IPC: F16B13/14
Filed: 1974-10-03
Abstract: 1461967 Caps UPAT-MAX-LANGENSIEPEN KG 3 Oct 1974 [3 Oct 1973] 43007/74 Heading B8T [Also in Division F2] A closure cap 4 for an ampoule of adhesive to be used in securing a bolt in a borehole is formed of electrically insulating resilient material. As shown, the cap has outwardly inclined resilient lugs 11 spaced around its skirt 13, and an external annular bead 12 around its upper periphery. This bead may be interrupted. The cap may have internal longitudinal ribs 14, Fig. 2, or an internal annular bead 22, Fig. 4. The inner end face 15 of the cap is shaped to receive the end of a bolt being secured. The lugs 11 may be omitted (Fig. 6, not shown).
Patent GB-1521887-A (GB)
Title: Production of beta alumina ceramic articles
IPC: C04B35/113
Filed: 1975-12-29
Abstract: 1521887 #-alumina ceramic articles CHLORIDE SILENT POWER Ltd 29 Dec 1975 [4 Oct 1974] 43183/74 Heading C1J #-alumina ceramic articles are produced by compressing powdered #-alumina (or a mixture of powdered materials which on heating produce #- alumina) and sintering the compressed powdered material to form an impervious ceramic article of at least 98% theoretical density and thereafter the article is pressurized in a gaseous pressure medium at an elevated temperature below but within 500‹ C. of the sintering temperature.
Patent GB-1132573-A (GB)
Title: Adhesive composition
Inventor: POWELL ROBERT EDWARD
IPC: C09J201/00
Filed: 1965-10-12
Abstract: 1,132,573. Metal laminates. IMPERIAL SMELTING CORP. (N.S.C.) Ltd. 10 Nov., 1966 [12 Oct., 1965], No. 43322/65. Heading B5N. [Also in Division C3] Sheets of zinc or galvanized steel are laminated with an adhesive composition comprising a neoprene pressure-sensitive adhesive and rubeanic acid (dithiooxamide) as a zinc-complexing agent.
Patent GB-1219840-A (GB)
Title: Reduction of turn-on delay in liquid crystal cell
IPC: H04N3/12
Filed: 1968-09-13
Abstract: 1,219,840. Light modulators. RCA CORPORATION. 13 Sept., 1968 [14 Sept., 1967 (2)], No. 43724/68. Heading H4F. [Also in Division G5] To reduce the time required for a nematic liquid crystal cell to change from its transparent state to its light scattering state in response to repetitive voltage pulses of relatively short duration, a number of such pulses being required to cause the liquid crystal to scatter light to an extent which is a function of the amplitude of the pulses, the internal resistance of the cell is increased prior to the application of the repetitive pulses. To increase the internal resistance of the cell the number of free current carriers present in the liquid crystal is reduced by applying either a continuous direct voltage bias (Figs. 8 and 9, not shown) or a continuing train of voltage pulses (Figs. 10-12, not shown) to the cell at a level lower than the voltage threshold for dynamic scattering of the cell. By increasing the internal resistance it is found that the number of excitation pulses necessary to effect a substantial amount of light scattering is reduced, i.e. the " turn-on " time for the cell is reduced. In addition, the cell exhibits a larger scattering effect and is thus brighter. The liquid crystal cells may be arranged in a matrix to form a television type display, and in every frame interval a row of cells is simultaneously " addressed," i.e. have their internal resistances increased, while pulses having amplitudes corresponding to the video information of respective elements of the row are applied to the cells.
Patent GB-977518-A (GB)
Title: Improvements in or relating to mechanical switching devices
IPC: H01H19/62
Filed: 1962-11-20
Abstract: 977,518. Cams. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Nov. 20, 1962 [Nov. 23, 1961], No. 43867/62. Heading F2K. [Also in Division H2] Cams 1, comprising annular plates cut and twisted to form helical strips, are secured in a helical groove in a drum 2 and actuate switches 5 through rollers 6 as the drum is rotated. A stationary pin 7 engages the groove in the drum to displace the drum axially by an amount equal to the pitch of the cam during each revolution. The cams are independently adjustable, rotationally and axially of the drum to actuate the switches at predetermined times and may have several turns. The drum may have two grooves, one for the cams and one for a driving rope. Holes 17 may be provided in the cams for moving them along the drum by means of a tool.
Patent GB-1268885-A (GB)
Title: Stuffer crimper
Inventor: HODGES JAMES RENNISON
IPC: D02G1/12
Filed: 1969-07-30
Abstract: 1,268,885. Stuffer box crimping. JOSEPH BANCROFT & SONS CO. 30 July, 1969, No. 44002/71. Divided out of 1,268,883. Heading D1F. A stuffer crimper includes a crimping chamber 10, a pair of filament feed rolls 11, 12, the chamber 10 having a saddle 19 having edges cooperating with the feed rolls to form a confined crimping zone, shafts carrying the respective rolls, bearing elements at each end of the rolls 11, 12 in which the shafts are journalled, cylindrical bearing housings 52, 57 carrying each of said bearing elements, and support brackets carrying said housings, the bearing elements associated with at least one of said shafts being eccentrically mounted in their respective housings and said respective housings being mounted for rotational adjustment in said brackets whereby the location of the rolls relative to the saddle 19 may be adjusted. The bracket carrying the bearing elements of one of the shafts includes pivotal means eg. arm 61 mounting the bracket for swinging movement to vary the spacing between the rolls. Means may also be provided for axially aligning the rolls. This subject matter is described and claimed in Specification 1,268,884. The construction of the crimping chamber 10 is described and claimed in Specification 1,268,883.
Patent GB-1067058-A (GB)
Title: Friction clutch for motor vehicles
IPC: F16D13/50
Filed: 1965-10-19
Abstract: 1,067,058. Friction clutches. LUK LAMELLEN UND KUPPLUNGSBAU G.m.b.H. Oct. 19, 1965 [Oct. 26, 1964], No. 44138/65. Heading F2C.  In a diaphragm spring clutch the inner periphery of the spring 8 is formed with recesses 8a to produce a series of radial tongues 10. As shown, the recesses 8a are rectangular with rounded corner portions 8b, but they may be of semi-elliptical shape. The recesses promote the flow of cooling air over the spring and adjacent parts. The release levers 16 are engaged by U- springs 22 with end coils mounted on the ends of the lever pivot pins 13 and engaging recessed support lugs 11 bent out from the cover-plate 3.
Patent GB-1312640-A (GB)
Title: Process for preparing an olefin disproportionation catalyst
IPC: C08F4/78
Filed: 1970-09-16
Abstract: 1312640 Disproportionation catalysts ESSO RESEARCH & ENG CO 16 Sept 1970 [1 Oct 1969] 44184/70 Heading B1E [Also in Divisions C2 C3 and C5] A catalyst for olefin disproportionation is prepared by contacting at -100 to +150‹C usually in a solvent a compound R<SP>+</SP>[M(CO) 5 X] where R is a unipositive cation, M is a Group VI B metal (i.e. Cr, Mo or W) and X is a uninegative ligand with an activator comprising an organometallic derivative of a Group I-III metal, a halide of a Group III element acting as a Lewis acid or an organoboron compound. The activator may be an organometallic halide, hydride or alkoxide, especially of Al, and may be of formula V n NY m  where V is a hydrocarbyl radical which may be halogenated or oxygenated, N is B or a Group I-III metal, Y is a halogen or pseudo-halogen and n and m are from 0 to 3. The cation R<SP>+</SP> may be an alkali metal ion or K 4 Q<SP>+</SP> where Q is a Group V element and K is H, C 1-30  alkyl, C 2-30  alkenyl or C 6-30  aryl. X may be halogen, cyanide, cyanate, thiocyanate, argide, acetate, trifluoroacetate or stearate. In the Examples, CH 3 AlCl 2 , C 2 H 5 AlCl 2  or methylaluminium sesquichloride is reacted with (n-C 4 H 9 ) 4  N[M(CO 5 )X]<SP>-</SP> where X is Cl or Br.
Patent GB-1186126-A (GB)
Title: Production of Phthalic Anhydride.
Inventor: MASELLI JAMES MICHAEL
IPC: B01J23/22
Filed: 1968-09-18
Abstract: 1,186,126. Phthalic anhydride. W. R. GRACE & CO. 18 Sept., 1968 [22 Sept., 1967], No. 44366/68. Heading C2C. o-Xylene is oxidized to phthalic anhydride by contact with molecular oxygen in the presence of a catalyst comprising a carrier and an alkali metal pyrosulphate, V 2 O 5 , and at least one other metal oxide in solid solution with V 2 O 5  or reacted with the V 2 O 5  to form a rutile structure. Specified other metal oxides are TeO 2  SbO 3 , Nb 2 O 5 , SnO 2 , PbO 2 , MnO 2 , GeO 2  and TaO 2 . Titania is the preferred carrier. The oxidation may be effected in a fluidized bed at 260-420‹ C using a small proportion of gaseous SO 2  in the reactant feed stream. Maleic anhydride is mentioned as a by-product.
Patent GB-1337780-A (GB)
Title: Electrolytic gold removal process
IPC: C25F5/00
Filed: 1971-09-23
Abstract: 1337780 Anodically oxidising gold coating S C M CORP 23 Sept 1971 [28 Oct 1970] 44422/71 Heading C7B A gold coating is removed from a substrate, e.g. Cu, brass, Ag or ceramic sheet, by anodically oxidising the coating in an electrolytic bath, the electrolyte of which is at least one non- toxic inorganic compound e.g. NH 4 Cl and HCl or HNO 3 , then removing the oxidised gold e.g. by ultrasonic vibration or wiping. Selected portions of the coating on a ceramic sheet e.g. of alumina or beryllia may be masked, e.g. by coating with a photo-resist and selectively exposing and developing, prior to electrolysis to form a printed circuit board.
Patent GB-1088009-A (GB)
Title: Process and apparatus for the vapour phase oxidation of organic compounds
Inventor: LIDOV REX EVERETT
IPC: B01J19/24
Filed: 1964-11-03
Abstract: In a process in which heat is extracted from an elongated catalyst-filled reactor through which an organic vapour is passed for partial oxidation, a stream of heat transfer fluid is passed in contact with the length of the reactor, and heat transfer fluid is added to and/or removed from said stream at intermediate points thereof to control the temperature independently of the variation of heat flow produced by the reaction occurring along the length of the reactor.  The process is exemplified in respect of (a) the production of phthalic anhydride from naphthalene (1 part by weight) using air (30 parts by weight) and an initial temperature of 250-350 DEG  C. rising to a hot-spot zone temperature of 550-600 DEG  C. and falling to 350 DEG  C. at the end of the reactor; (b) the oxidation of benzene with air to form maleic acid under the same conditions; (c) the oxidation of o-xylene to phthalic anhydride using a hot-spot temperature of 425-650 DEG  C. and (d) the oxidation of 1,2,4,5-tetramethylbenzene (durene) to pyromellitic anhydride using a hot-spot temperature of 550-600 DEG  C. following an initial temperature of 200-300 DEG  C.
Patent GB-929746-A (GB)
Title: Substituted amides and processes for their production
Filed: 1961-12-14
Abstract: The invention comprises compounds of the formula <FORM:0929746/IV(a)/1> (wherein R is alkoxy of at most 6 carbon atoms, x is zero or one and n is 2, 3, 4 or 5, the nitrogen atoms being separated by at least 2 carbon atoms) and their non-toxic acid-addition and quaternary ammonium salts; and their preparation, by condensing a compound of the formula <FORM:0929746/IV(a)/2> with a compound of the formula <FORM:0929746/IV(a)/3> wherein Y is NH2 and Z is the residue of an acylating group, such as a halogen atom, the residue of an alcohol or phenol or the group <FORM:0929746/IV(a)/4> or Y is a halogen and Z is -NH-alkali metal.  Examples are given and a list of salt-forming acids and quaternizing agents is provided. Compounds of the second general formula above wherein Y is halogen may be prepared by reacting 4-phenyl-1,2,3,6-tetrahydropyrridine with an appropriate alkylene dihalide.  Reaction of these halogen derivatives with an alkali metal cyanide then gives compounds of the stated formula wherein Y is CN, which may also be prepared from 4-phenyl-1,2,3,6-tetrahydropyridine and the appropriate cyanoalkyl halide.  Reduction of these nitriles containing one less carbon atom than is required in the final alkylene chain then gives compounds of the stated formula wherein Y is NH2.
Patent GB-1109108-A (GB)
Title: Brazing alloys and the production of ceramic-to-ceramic and ceramic-to-metal joints
Inventor: CLARK CHARLES ALFRED
IPC: C22C19/03
Filed: 1965-10-22
Abstract: A brazing alloy for the production of ceramic-to-ceramic and ceramic-to-metal joints has the following composition in atomic per cent:-  <TABS:1109108/C6-C7/1> Ingots of the alloy are forged at 1000-1100 DEG C. hot rolled at 1000-1100 DEG C. and then cold rolled. For the production of wire, the cold rolling is replaced by hot drawing at 800-1000 DEG C. and cold drawing.
Patent GB-1484608-A (GB)
Title: Semiconductor device
IPC: H01L21/52
Filed: 1974-10-21
Abstract: 1484608 Semi-conductor devices HITACHI Ltd 21 Oct 1974 [22 Oct 1973] 45464/74 Heading H1K In a semi-conductor device one face of a wafer of semi-conductor material, e.g. Si or Ge is bonded to a composite electrode consisting of fibres of a material having a thermal expansion coefficient substantially equal to or less than that of the wafer material embedded parallel to said wafer face in a matrix of metal of higher electrical and thermal conductivity than the fibre material so that the expansion coefficients of the wafer and the face of the electrode to which it is bonded are matched. Preferably the fibres are of tungsten, molybdenum, graphite or iron-nickel-cobalt alloy in a matrix of copper and lie parallel to the interface between the electrode and the body. They may form a series of rectangular grids stacked to form a laminar structure with an angular displacement between successive grids. The fibres should comprise more than 20% by volume of the electrode and the fibre content is preferably graded from 50% adjacent the body to zero on the opposite electrode face to achieve optimum expansion coefficient matching and permit corrosion-free attachment of a copper lead or base electrode. As described composite electrodes are attached to opposite faces of a silicon wafer which is mounted in a sealed envelope. Methods of forming the electrodes are described. Specifica- 1,158,994, is referred to.