baber/WOPTO huggingface dataset:
Patent GB-1105477-A (GB)
Title: Nuclear reactors
Inventor: HENDERSON GORDON TAYLOR
IPC: G21C19/04
Filed: 1964-11-06
Abstract: 1,105,477. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 26 Oct., 1965 [6 Nov., 1964], No. 45394/64 Heading G6C. In a nuclear reactor of the kind having fuel elements stacked within vertical channels in a solid moderator and cooled by heat exchange with gas flowing through the channels, at least some of the channels contain fuel elements stacked upon a support strut and surmounted by a non-fissile member, the support strut and non-fissile member having chambers which communicate with ambient pressure at the lower and upper ends respectively of the channels and which communicate with means for sensing pressure differential between the chambers, the means being located remotely from the channels. Where a stack of fuel elements is supported by the strut, the upper non-fissile member may be a holding-down weight for preventing levitation of the fuel elements by the coolant. Alternatively, the upper non-fissile member may be a telescopic stem supported from the upper extremities of the channel and may include thermocouple means for measuring the coolant outlet temperature of the channel. Knowledge of the pressure drop occurring over the fuel channels or a representative number of these enables accurate heat transfer calculation and adjustment of coolant mass flow through the channels to be made so that each channel can be operated at optimum coolant temperature. The coolant mass flow can be controlled by a suitable gag valve at the foot of each channel. Struts and telescopic stems may be used in one or more fuel channels which are devoid of fuel elements, to determine the pressure drop in such empty channels and hence calculate the coolant flow rate through leakage paths within the reactor core, e.g. between blocks of moderating material from which the reactor core is fabricated. Preferably, the chambers communicate with the differential pressure measuring means by means of pipes, these having portions of reduced tensile strength adjacent the strut and the upper non-fissile member so that the pipes can be readily severed and withdrawn from the channel prior to the discharge of the upper non-fissile member, fuel elements and strut from the channel.
Patent GB-1064566-A (GB)
Title: Improvements in electromagnetically operable stepping mechanisms
IPC: G06M1/276
Filed: 1964-03-02
Abstract: 1,064,566. Counters. DURANT MANUFACTURING CO. March 2, 1964 [May 16, 1963], No. 45603/66. Divided out of 1,064,563. Heading G4D. The disclosure is the same as in the parent Specification but the claims differ.
Patent GB-1048797-A (GB)
Title: Adhesive mass substantially free of surface tack
IPC: C09J5/00
Filed: 1965-10-28
Abstract: Solid tack-free adhesive masses capable of transfer of an adhesive film to a substrate by friction rubbing of said mass on said substrate, comprise a substantially homogeneous blend of 53-75 parts hydrogenated wood rosin, glycerol esters of hydrogenated wood rosin or glycerol esters of wood rosin, 10 to 33 parts of a solid copolymer of 67 to 72% of ethylene and 33 to 28% of vinyl acetate, an amount up to 5 parts of paraffin wax sufficient to render said mass free of surface tack and up to 25 parts of a plasticizer selected from sebacic acid alkyd and oil-modified dibasic acid alkyd plasticizing resins and sufficient to render said mass suitable for friction deposition, all parts and percentages being by weight.  The compositions may be formed by melting and stirring the ingredients, and casting the resultant mixture in a lined mould.  Examples describe masses comprising ethylene/vinyl acetate copolymers, glycerol esters of hydrogenated wood rosin, paraffin wax and glycerol/sebacic acid alkyds modified with castor and linseed oils.
Patent GB-1043900-A (GB)
Title: Electrical circuits comprising field-effect transistors and useful as variable reactance circuits
IPC: H01L29/00
Filed: 1963-11-20
Abstract: 1,043,900. Field effect transistor circuits; frequency modulation. RADIO CORPORATION OF AMERICA. Nov. 20, 1963 [Dec. 3, 1962], No. 45855/63. Headings H3R and H3T. An insulated - gate fieldeffect transistor comprises a biased gate electrode 61, Fig. 3, separated by a highresistance silicon dioxide layer from a lightly doped P- type silicon substrate 64 having source and drain electrodes 62, 63 forming with the substrate reversed biased rectifying junctions 72, 71 which act as variable capacitors when a variable control voltage across terminals 73, 74 is applied to the substrate electrode 64. With the stray capacitances between gate electrode 61 and source 62, and between source 62 and earth (67 being an R.F. choke), the transistor circuit forms a Colpitts oscillator with the frequency determined by inductor 69 and the capacitances. The oscillator may be frequency controlled by an A.F.C. voltage or frequency modulated by a signal voltage applied at 73, 74 over choke 75 to the capacitors 71, 72. When the signal voltage becomes positive, rectifier junction 72 forms a resistor, the net effect decreasing the oscillator frequency. Alternatively, a switching voltage forwardly biasing both rectifier junctions 71, 72 may key the oscillator on and off. Capacitor 76 which is optional also influences the circuit frequency characteristics, and an additional capacitor between the gate and source electrodes 61, 62 may be provided to reduce the increase in oscillation amplitude arising with positively increasing substrate voltage. In a modification, Fig. 6 (not shown), the source electrode 62 is positively biased by a resistor in series with the choke 67. Also a variable resistor or a signal source is connected between the positively biased drain and the substrate electrode 64 so that diode 72 is always forwardly biased and varies the effective value of capacitor 71. In Fig. 7 the transistor circuit is an R.F. or I.F. tuned amplifier with input applied over capacitor 92 and A.G.C. also applied to the gate electrode 91 to vary the current and therefore the voltage across a tapped resistor 100 in series with a tuned output circuit 99. The D.C. voltage at the resistor tapping 102 is applied to the substrate electrode to vary the transistor capacitance shunting the tuned circuit and lower its frequency response with increased A.G.C. voltage. This variation of the frequency response of circuit 99 with the A.G.C. voltage results in an essentially flat frequency response characteristic over a predetermined signal pass-band. This arrangement may be used as a television receiver inter-carrier I.F. amplifier to provide enhanced response to the video carrier when the carrier signal level is weak.
Patent GB-1491788-A (GB)
Title: Fluid flow control device
IPC: F16K47/08
Filed: 1975-11-06
Abstract: 1491788 Valves BENDIX CORP 6 Nov 1975 [29 Nov 1974] 46098/75 Heading F2V In a directional control valve having a spool 22 movable in a sleeve 20 the flow to and from the work ports 14, 16 are through stacks 50, 52 of annular apertured discs. The apertures of the discs in each stack communicate to give labyrinth-type flow passages while at least one disc in a stack has a slot extending between the radial inner and outer peripheries. Some of the apertures extend radially from either the inner or the outer periphery to give fluid access to the flow passages.
Patent GB-962875-A (GB)
Title: New polyethers
IPC: C08F12/22
Filed: 1962-12-07
Abstract: The invention comprises compounds of formula <FORM:0962875/C1/1> , wherein each R is selected from H and aliphatic, cycloaliphatic and aromatic hydrocarbon radicals, Ar is an n-valent carbocyclic aryl radical and n is a whole number.  Such compounds are prepared by reacting together the appropriate phenol Ar(OH)n and the p-vinylphenyl glycidyl ether, with the optional addition of a catalyst and an inert solvent; many suitable glycidyl ethers and phenols are listed. Exemplified pairs of reactants are: (1) 2,2-bis (4-hydroxy-phenyl)-propane and p-(1-methylvinyl)-phenyl glycidyl ether (I); (2) 1, 1-bis-(4-hydroxyphenyl)-cyclohexane p-(1-ethylvinyl)-phenyl glycidyl ether; (3) 2,2-bis-(2, 6-dichloro -4- hydroxy phenyl)-propane and p-(1-phenylvinyl)-phenyl glycidyl ether; (4) a , a 1-bis-(4-hydroxyphenyl)-a , a , a 1, a 1-tetramethyl-p-xylene and ether (I); (5) 4, 41-dihydroxydiphenyl sulphide and ether (I); (6) 4,41-dihydroxydiphenyl sulphone and ether (I); (7) resorcinol and ether (I); (8) hydroquinone and ether (I).ALSO:A resin of formula (p-CH2 = C(CH3)C6H4 -O CH2CHOHCH2O-)n Ar is obtained by reacting p-isopropenylphenol/styrene copolymer with p-isopropenylphenyl glycidyl ether, wherein Ar is the n-valent radical derived from the copolymer by reaction of n-phenolic groups. In general, Ar may be derived from other p-vinyl-phenol/vinyl monomer copolymers (unspecified) and the isopropenyl group in the resin may be replaced by one of formula CR2R3 = CR1-, wherein R1, R2 and R3 are H, or aliphatic, cycloaliphatic or aromatic hydrocarbon radicals.
Patent GB-1219065-A (GB)
Title: Process for manufacturing high density press-formed articles
IPC: B22F3/12
Filed: 1969-09-19
Abstract: 1,219,065. Compacting alloy powders. SINTERMETALLWERK KREBSOGE G.m.b.H. 19 Sept., 1969 [26 Nov., 1968], No. 46336/69. Heading B5A. [Also in Division C7] Articles are formed from alloy powder mixtures consisting predominantly or wholly of metals other than iron by forming a prepressed workpiece, which is then heated to between 800 and 1100 C. and is then compacted without sintering in a press tool which has been preheated to 150 to 350 C. and is held at this temperature e.g. by cooling, during the compacting. The prepressing and subsequent compaction are preferably respectively effected a 6 t/cm.<SP>2</SP> and 8 t/cm.<SP>2</SP>, and the compacting is followed by annealing in vacuum, at four to five hours at 1250 C. Examples are given in which the article is formed from: (1) electrolytic iron powder containing 5% chromium powder, 59% nickel powder, and 26% molybdenum powder; (2) electrolytic iron powder containing 16% chromium powder, 57% nickel powder, 17% molybdenum powder, and 4% tungsten powder; (3) electrolytic iron powder containing 1% chromium powder, 65% nickel powder, and 30% molybdenum powder; (4) a mixture comprising 20% chromium powder, 79% carbonyl-nickel powder, and 1% titanium carbide powder.
Patent GB-1154928-A (GB)
Title: Indicating Device for Dual Hydraulic System
IPC: B60T17/22
Filed: 1967-10-11
Abstract: 1,154,928. Brake indicators. BENDIX CORP. 11 Oct., 1967 [24 Oct., 1966], No. 46426/67. Headings F2E and F2F. A warning device for a dual hydraulic braking system, responsive to pressure differential between the two systems comprises an element 130 having electrically conductive walls 126, 128, mounted in a chamber 52 such that any pressure differential causes one or other of the walls to touch electrical contact 156, and so complete a circuit to an indicator. A single prestressed spring 140 maintains the element 130 in its balanced position until the pressure differential exceeds a predetermined value. The brakes are actuated by a double piston master cylinder having pistons 68, 88, the pressure being delivered to the brakes via check valves 166, 168.
Patent GB-1221642-A (GB)
Title: Improvements in razor blades
Inventor: WILKINSON ANTHONY ERNEST FREDE
IPC: C23C14/00
Filed: 1966-11-30
Abstract: 1,221,642. Razor blades. WILKINSON SWORD Ltd. 28 Feb., 1968 [30 Nov., 1966], No. 46876/66. Heading B4B. [Also in Division C7] At least the cutting edge of a razor blade is coated to a thickness less than 400 Š by sputtering with chromium or chromium oxide. A further layer of p.t.f.e. may be applied.
Patent GB-1314410-A (GB)
Title: Catalyst compositions and treatment of combustion exhausts
IPC: B01D53/86
Filed: 1970-10-05
Abstract: 1314410 Catalyst composition MONSANTO CO 5 Oct 1970 [6 Oct 1969 (2)] 47238/70 Heading B1E [Also in Division C1] A catalyst composition comprises an active transition metal component of which at least 50% wt is present as the metal aluminate, as determined by X-ray K-absorption edge spectroscopy, dispersed on an inert support and in which the metal aluminate is not detectable by X-ray diffraction. Specified transition metals are Ni, Co, Fe, Cr, Mn and Cu. The support is suitably alumina of surface area greater than 100m<SP>2</SP>/g. Promoters may be added, e.g. chromia, vanadia, or the metals Pt, Pd, Co and Fe, or their oxides. The Examples relate to copper oxide/aluminate an alumina formed by impregnation of alumina with copper nitrate followed by calcination.
Patent GB-1364558-A (GB)
Title: Metal salt compositions
IPC: C09F9/00
Filed: 1971-10-14
Abstract: 1364558 Basic lead carboxylates TENNECO CHEMICALS Inc 14 Oct 1971 [2 Nov 1970] 47879/71 Heading C2C [Also in Division C4] Basic lead salts of saturated, branched-chain, acyclic, C 7 -C 18  monocarboxylic acids having at least 6C atoms in the longest straight chain and no substituent in the 2-position are produced by reaction in a solvent of litharge with the appropriate acid. Salts having a degree of basicity of 1À0 or less can be obtained by the process of Specification 891,858. In Example 1 herein a slurry of litharge in mineral spirits is mixed with 3,5,5-trimethylhexanoic acid and a commercial mixture of saturated trialkylacetic acids of 9, 10 and 11 carbon atoms, heated to 230 F. for  hr. and filtered. In Example 6 the solvent is mineral spirits and 2-(2-ethoxyethoxy)- ethanol, and the commercial acid is replaced by 2-ethylhexoic acid. In Example 7 the trimethylhexanoic acid is replaced by a C 8 -Oxo acid which is predominantly 3,4-dimethyl-, 3,5-dimethyl-, and 4,5-dimethyl-hexanoic acids. Example 9 uses 3,5,5-trimethylhexanoic acid alone. Reference has been directed by the Comptroller to Specification 1,002,397.
Patent GB-1132017-A (GB)
Title: High restriction lubricant flow control unit
Inventor: THOMAS THOMAS REGINALD
IPC: F16N27/00
Filed: 1965-11-15
Abstract: 1,132,017. Lubricating; valves. AUTO RESEARCH CORP. 15 Nov., 1965, No. 48468/65. Headings F2A and F2V. [Also in Division G3] A flow control unit for use in a centralized lubricating installation comprises an inlet socket 29 containing a fibrous filter plug 30 adjacent an apertured plate 31, the apertures being smaller on the side adjacent the plug than on the other side, an outlet socket 42 containing a check valve 37, and a restricted passageway 35 between the sockets. The apertures are circular or square. To form plate 31 a plastics matrix with projections on one side is coated with carbon and electroplated with alternate layers of Cu and Ni, and the laminate removed. Valve 37 has a silicone facing 38, and spring 39 abuts perforated cup 40. Passageway 35 is restricted by rod 36.
Patent GB-1037478-A (GB)
Title: Improvements in or relating to piling devices
IPC: B65G57/30
Filed: 1964-12-01
Abstract: 1,037,478. Stacking boxes. CHRISTIAN BERNER A.B. Dec. 1, 1964 [Dec. 3, 1963], No. 48708/64. Heading B8C. Pivoted members 6 (Fig. 1) supporting a stack of boxes or the like are pushed aside when a further box is raised on arms 17 and then the members 6 drop back into horizontal position to support the pile and the new box. The stacker is adjustable for various sizes of boxes. In the form shown the pivots 5 for the members 6 are attached to a pair of cross-bars 19 (Fig. 1, Fig. 2, not shown) which are movable towards each other by means of a bell crank 21. Guide plates 26 (Fig. 1) connected to the pivots 5 are consequently also adjustable. Supporting members 14 (Fig. 2, not shown) guided in rails 30 attached to the cross members 19 are also swung inwards about a horizontal pivot 13 when the cross members are adjusted so that arms 17 attached to the members 14 swing in to support a smaller box. The arms 17 are raised by pneumatic devices. Adjustable gates 28 (Fig. 1) which stop each box as it is fed in on the conveyer may be swung aside so that completed stacks which have been lowered on to the conveyer 2 may be removed from the stacker.
Patent GB-1412630-A (GB)
Title: Flexible shaft coupling
IPC: F16D3/68
Filed: 1972-10-23
Abstract: 1412630 Flexible shaft couplings H BARTH 23 Oct 1972 [27 Oct 1971] 48755/72 Heading F2V A flexible shaft coupling comprises two coupling members 3, 4 from each of which teeth 7, 8 extend axially, and are interleaved to define intervening spaces each having a part 11 sandwiched between two elements 14, more resilient than either the parts 11 or teeth 7, 8. The parts 11 may be joined by a ring 12 either encircled by, or encircling the teeth 7, 8. The elements 14 may be joined by inner bands 15, which may form a single ring when the ring 12 encircles the teeth, spaces 16, 17 being provided each side of the bands 15. Preferably the teeth 7, 8 and part 11 edges 18 are rounded (as are edges 19, and spaced apart, when the coupling is unloaded, a distance less than the diameter of the preferably barrel-shaped elements 14, but yet sufficient to remain spaced under maximum load. There may be two parts 11 and three elements 14 between each pair of adjacent teeth 7, 8. The material of the coupling members 3, 4 may be grey cast iron or a light alloy or other metal. The parts 11 may be of one of these metals or of nylon. The elements 14 may be of natural or synthetic rubber. The parts 11 may have axially projecting nylon studs extending towards the members 3, 4 to reduce noise. Cooling fins, extending radially or tangentially, may be formed on the ring 12 when this encircles the coupling.
Patent GB-987145-A (GB)
Title: A device for use with conveyors and with powered supports for mine roofs
Inventor: ROOK JACK
IPC: E21F13/08
Filed: 1962-12-31
Abstract: 987,145. Jacks for advancing coal conveyers. A. G. WILD & CO. Ltd. March 5, 1964 [Dec. 31, 1962], No. 49086/62. Heading B8J. The greater part of a two-stage double-acting ram for advancing a coal conveyer 24, when the ram is retracted, is accommodated within the base 21 of a rear support unit (not shown). The arrangement avoids forming an obstruction to men moving along the travelling way between the rear support units and front support units 19. It is not normally necessary for men to pass between the support units when the ram is extended. The projecting end of the piston rod 13 is connected to the conveyer 24 by a flat section link 25 which passes through a tunnel in the base 20 of the front support 19. Ties 26 connect the bases 20, 21. The link and ties provide minimum obstruction between the support units. To advance the conveyer and the support units, fluid is admitted into a chamber 16 of the ram thereby extending the piston-rod 13 and an inner cylinder 11 and pushing the conveyer forwards. Thereafter fluid is admitted into chambers 17, 18, the cylinder 11 being pulled over the extended piston-rod 13 and an outer cylinder 10 being pulled over the inner cylinder 11, thereby advancing the support units. In the modification shown in Fig. 5, the link 25 is connected to the conveyer by a pin 27 and a link 28.
Patent GB-1491960-A (GB)
Title: Releasable fastening
IPC: E04B1/61
Filed: 1975-12-02
Abstract: 1491960 Clamps LESSER BUILDING SYSTEMS Ltd 2 Dec 1975 49415/75 Heading E2B  A clamp for securing two casing components 1, 2 together comprises a cam 10 having raised eccentric hook-shaped flanges 12 on each side and arranged to entrain inwardly formed projections 19, 20 of the other casing, so that as the cam is turned by a hexagon key at 22, the two casings are drawn together. Accidental release is prevented by teeth 13, 14 on the edges of the flanges engaging projections 15, 16 in the casing 1 of the cam part.
Patent GB-1287615-A (GB)
Title: Machine and method for producing moulds
Inventor: BERNARD JEAN-PIERRE
IPC: B22C13/08
Filed: 1969-10-08
Abstract: 1287615 Casting machines and moulding machines; foundry plant J P BERNARD 8 Oct 1969 [10 Oct 1968] 49476/69 Heading B3F  Foundry plant.-Finned cylinders for I.C. engines or compressors are cast in sand-lined metal-backed moulds on a rotating conveyer casting and moulding machine 30. The rotating conveyer rotates anticlockwise intermittently to bring moulds 10 sequentially from a moulding/ lining station 35 to an assembly and locking station 36, into a casting station 37, from there, after cooling, to a mould disassembly and casting extraction station 38 and finally to a cleaning station 39. Moulding/lining station, patterns.-In Fig. 12 two pairs of patterns 26 are mounted on pattern plates 40 provided with gas or electric heating elements. The plates are resiliently attached at 41 to a support 42 which is movable towards two pairs of mould halves 10. The support 42 can pivot about 47 to set the patterns 26 horizontal for inspection. In operation, the patterns 26 are moved within the mould halves 10 and watercooled sand-blowing nozzles 27 engage apertures 16 in the mould halves 10. The nozzles 27 are horizontally and vertically adjustable. Resin/ sand mixture is blown into the spaces between the mould halves 10 and patterns 26 to give an accurate impression of the finned cylinders to be cast. Assembling and clamping moulds.-At the mould assembly station 36 (Fig. 13) the mould halves 10 on their mountings 20, 21 which are pivotably mounted on a support 30 are swung together by an arm 57 engaging a lug 61 on a lower mounting 21 and moving upwardly and outwardly. The arm 57 then moves inwardly (i.e. towards mounting 20) and the two mountings 20, 21 are locked by a clamp 65. Cores may be installed in the moulds. Casting apparatus; moulds.-Melt is supplied to the moulds at a casting station 37 by a tundish (130). The metal flow may be controlled by a photo-electric cell detecting the rise of metal in the moulds. The moulds (Fig. 4) which each carry two cylinder impressions 11 are poured through a single shower gate 12 and sprue 13 and are vented at 14. A flange 17 is provided at each side for location in slots within the mould mounting (20, 21, not shown).
Patent GB-1276129-A (GB)
Title: Energy-sensitive compositions and materials
Inventor: MEE JOHN DAVID
IPC: C07D487/04
Filed: 1969-10-09
Abstract: 1276129 Light- and heat-sensitive materials EASTMAN KODAK CO 9 Oct 1969 [9 Oct 1968] 49612/69 Heading G2C [Also in Division D2] A light- or heat-bleachout composition comprises a polymeric binder and a dye containing an unsaturated heterocyclic ring containing a nitrogen atom, which may bear a positive charge, and attached to the nitrogen atom a group -O-R<SP>1</SP> wherein R<SP>1</SP> is acyl or hydrocarbon which may be substituted. These compositions may be used as antihalation or filter layers in silver halide emulsions. The dyes are preferably pyridocarbo- or thia-cyanines. If a mixture of magenta, yellow and cyan dyes are used, a positive coloured image is produced on exposure. When used as antihalation or filter layers, the residual dye is bleached by exposure during processing.
Patent GB-1404263-A (GB)
Title: Game brooder housings
IPC: A01K31/19
Filed: 1973-10-24
Abstract: 1404263 Game brooder R COTTAM 24 Oct 1973 49621/73 Heading AIM A game brooder comprises at least two wall panels I which can be interconnected at different points 4 to vary the base area 9. The brooder further comprises a roof panel and a removable cover 3 of translucent reinforced polythene. In one embodiment the side panels 1 are bent into a curved form and interconnect at points 4 comprising upright supports 7, 8A or 8B. Wire mesh ventilators 10 and lockable popholes 11 are provided in each panel 1. The roof panel is supported at the corners by stakes 13 and the tent-like cover 3 is supported centrally by a support 15 on the roof panel, and at its corners by elastic loops held by hooks 16. The roof has windows and doors in its inner area, and further doors nearer its edges for access when the panels 1 are in their extended position. The roof doors are used after removal of the cover for introducing the chicks to the brooder and for supplying food. The side panels 1 may be of different shapes to produce circular, rectangular or triangular housings.