baber/WOPTO huggingface dataset:
Patent GB-1254307-A (GB)
Title: Fluid pressure balanced valve
Inventor: PETERSON JACK W
IPC: F01C1/10
Filed: 1968-12-16
Abstract: 1,254,307. Valves. EATON YALE & TOWNE Inc. 16 Dec., 1968, No. 59807/68. Heading F2V. [Also in Division F1] In a rotary positive-displacement fluid pump or motor the flow of fluid between inlet and outlet ports 17, 18 and working spaces, or " cells ", formed by intermeshing teeth on a shaft 36 and member 21 is controlled by a rotary valve-member 62 in a fixed sleeve-member 52. Annular channels 66, 68 and 67, 69 are interconnected by holes 70, 71, the channels 68, 69 being connected to the appropriate cells by slots 72, 74 passing periodically and sequentially into register with passages 77, each of which is connected by passages 76, 78 to the respective cell. The pressure of fluid leaking into a clearance gap between the sleeve member and a casing section 10 tending to compress the sleeve member radially inwards is balanced by the pressure of fluid leaking into a narrower clearance gap between the sleeve member and the valve member. An O-ring 58 prevents the ports 17, 18 being short circuited.
Patent GB-1293397-A (GB)
Title: Sport racket frames
Inventor: ESHBAUGH ROBERT WAYNE
IPC: A63B49/10
Filed: 1969-12-09
Abstract: 1293397 Sports racket frames R W ESHBAUGH 9 Dec 1969 60042/69 Heading A6D A racket frame comprises a rigid laminate of a number of layers of one or more windable material integrally bonded to one another by a hardened bonding agent, the density of that windable material extending throughout the laminate and bearing a major part of the loads experienced in use, by the laminate, lying within the range 0.065 to 0.085 pounds per cubic inch of the laminate some of the windable material forming an inner loop which is closed and defines the shape of the central opening in a head portion for receiving racket stringing, and the remainder forming an outer loop which substantially completely overlies the outer periphery of the inner loop and extends along the length of a handle forming portion. The windable material is preferably of fibrous glass in roving, cloth or tape form impregnated with a hardening bonding agent and the laminate can include layers of absorbent material e.g. paper interposed between layers of the windable material. One or more layers of metal foil may also be incorporated in the laminate and the impregnating agent may be of different colours. A spacer may be incorporated in the handle portion. In making such a racket frame an inner loop 50 of impregnated windable material is either wound round a central mandrel 16 (with a back plate 12) or is formed on a separate mandrel and transferred to the mandrel 16 before hardening takes place, and an outer loop 52, similarly formed, is placed partly around the inner loop and so as to extend downwardly to form the handle portion of the frame, a spacer 22 being incorporated. Side arms 18, 20 are then clamped into position so as to form the handle 47 and hinged arms 40, 42 are clamped around the head portion. A top plate (14, Fig. 4 not shown) is then clamped in position and the whole heated to cure the bonding agent. The arms 40, 42 have projecting portions to form a groove around the head portion to house the stringing later. Preferably the laminate material is composed of two outside layers of impregnated glass roving or glass cloth followed by respective layers of absorbent paper and then respective layers of impregnated glass roving or cloth with a central metal foil layer (Fig. 7 not shown). In a second method of making (Figs. 8-15, not shown) a stock piece from which a plurality of racket frames can be sliced, is formed by firstly helically winding a tape of impregnated glass rovings on to an eliptical mandrel (62) to form the inner head portion (61), winding a further impregnated tape partly around the first winding and around a rod (64) spaced from the mandrel to form the handle portions (63), inserting a spacer element (68) and clamping the handle forming portions to the spacer element to form the handle portion, removing the stock piece from the mandrel and curing it. Individual racket frames are then sliced from the stock piece and subjected to various finishing operations. (see Specification 1293398 for details of apparatus).
Patent GB-1341320-A (GB)
Title: Water-soluble fibre-reactive azo dyestuffs their metal  complex compounds and processes for their manufacture
IPC: C09B62/515
Filed: 1971-12-23
Abstract: 1341320 Water-soluble fibre-reactive azo dyestuffs FARBWERKE HOECHST AG 23 Dec 1971 [28 Dec 1970] 60063/71 Heading C4P [Also in Division C2] Novel water-soluble, fibre-reactive azo dyestuffs of the formula (wherein D is the radical of a diazo component; R is H or alkyl; n is 1 or 2; A is optionally substituted naphthylene or mono- or di-substituted phenylene; and Z is -SO 2 CH = CH 2  or -SO 2 CH 2 CH 2 X in which X is a radical capable of being split off by an alkaline agent) and their metal complexes are prepared by reacting compounds of the formula in any desired order with a diazonium salt of an appropriate amine DNH 2  and a compound of one of the formulµ OCN-A-Z and in which Z may also be -SO 2 (CH 2 ) 2 OH and Y is a halogen atom or a phenoxy group. In the products or intermediates Z groups may be interconverted and/or metal complexes may be formed. D may be, for example, a radical of the benzene, naphthalene, azobenzene, azonaphthalene, benzene-azo-naphthalene, diphenyl or stilbene series which may be substituted by water-solubilizing groups and/or other substituents, including heterocyclic radicals. X may be, for example, a halogen atom, an alkyl- or aryl-sulphonyloxy group, an acyloxy group, e.g. acetoxy, -OPO 3 H 2 , -SSO 3 H, -OSO 3 H, phenoxy or dialkylamino. The process for preparing (1) may be conducted by coupling the diazonium compounds with the aminonaphthols (4) or their N-acylates, with subsequent hydrolysis if N-acylates are used, and then reacting the products of the formula with the isocyanates or carbamic acid derivatives, or by reacting the latter with (4) and then reacting the products with the diazonium compounds. Metal derivatives may be formed by standard procedures from the intermediates (8) or the final products. Z groups are interconverted by standard procedures, e.g. groups are converted to -SO 2 CH = CH 2  with alkaline agents; -SO 2 CH = CH 2  or may be reacted with a dialkylamine or a thiosulphate to give -SO 2 (CH 2 )N(alkyl) 2  or respectively; and -SO 2 (CH 2 )OH may be esterified, e.g. -SO 2 (CH 2 )OSO 3 H, or -SO 2 (CH 2 ) 2 Cl. Starting materials.-1 - Aminobenzene - 3- sulphonic acid is diazotized and coupled with 1-amino-8-hydroxy-naphthalene-3,6-disulphonic acid at pH 7 to 7À5 to give a dyestuff starting material. Similarly 1-amino-benzene-2,5-disulphonic acid is diazotized and coupled with 2 - (N - acetylamino) - 5 - hydroxynaphthalene- 7-sulphonic acid and the acetyl group is removed from the product by acid hydrolysis.
Patent GB-1332513-A (GB)
Title: Signal separation apparatus for stereophonic multiplex receivers
IPC: H04H20/88
Filed: 1970-12-18
Abstract: 1332513 Stereophonic radio receivers RCA CORPORATION 18 Dec 1970 [29 Dec 1969] 60160/70 Heading H4L The stereophonic signal decoder described in the present Specification is also described in Specification 1,332,515, but the claims differ.
Patent GB-1364249-A (GB)
Title: Elongate electrical conductors
IPC: H01B7/02
Filed: 1970-12-18
Abstract: 1364249 Conductor screen REYROLLE PARSONS Ltd 17 March 1972 [18 Dec 1970] 60263/70 Heading H2C An electrical connector (e.g. for high-voltage equipment) includes a central rod or cable conductor 10 surrounded by a multi-section screen comprising hollow annular shells 11, of, e.g. spun metal or metallized glass-fibre or resinbonded fabric, having smooth outer surfaces. As shown, the shells 11 from an open toroid but a closed toroid having flat end walls 11C may also be used. The shells may be joined at the end walls by spray-loaded bolts 13, allowing articulation of the connector. Two or more preassembled groups may be joined together by links 19 which hook round the end walls at one end 20, and fasten on to the flexible connector 13 at their other end. An alternative group connector, Fig. 4 (not shown), comprises a spring (21) linking two metal plates (24) one on each of two adjoining shells. In another embodiment, Fig. 5, each shell has attached to it a face-plate 25 through which run glass-fibre rods 27 bolted at 28, and between which run insulating spacers 26, so that the shells are rigidly held and spaced apart to provide air gaps 29. On a further glass rod 32 is an impedance, e.g. resistive, system acting as a current-limiting comprising a carbon resistor 31, metal spacer 30 and bias spring 34 between each pair of plates. Each resistor is in direct electrical contact with one plate 25 and via it with a shell 11. Each shell is electrically connected to the next via a resistor 31. Groups of shells may be flexibly coupled using spring 35. It is stated that the connectors may be used to connect high-voltage equipment in a radiointerference-free manner; a shell diameter of 30 cm. would provide an interference-free connector for voltages up to 1 M.V.
Patent GB-1284915-A (GB)
Title: Apparatus for developing electrostatic images
IPC: G03G15/08
Filed: 1969-12-12
Abstract: 1284915 Developing electrostatic images R C A CORPORATION 12 Dec 1969 [19 Dec 1968] 60681/69 Heading G2H In an electrostatic printing machine in which electrostatic image areas occupy only a small part of a sheet, a developing apparatus transports toner to regions adjacent the image areas only, from where toner can be attracted imagewise to the sheet, by means of a plurality of similar conveyor means one or more of which is selectively actuable manually or automatically. In one embodiment the conveyor means comprise a number of wheels 70 disposed side by side and frictionally driven by rectangular shaft 26 through resilient splines 84 Fig. 4 (not shown) and arranged below toner container 60 to receive toner in recesses 98 and deliver it to transfer roller 36 which is contacted by magnetic roller 46 contacted by sheet 14. The electrostatic images are produced by character electrodes 120 on receipt of a pulse from a computer which pulse also actuates one or more of a series of arresting pins 108, one for each wheel 70, to project into a recess 98 of a wheel 70 thus locking it and preventing toner from being applied to the corresponding area of sheet 14. In a second embodiment, the conveyor means comprise a plurality of outlets for toner container 10a Fig. 7 (not shown) which are opened or closed by plungers (140) selectively movable by solenoid means (110) to allow toner to fall by gravity onto transfer roller 36.
Patent GB-1224529-A (GB)
Title: Dimerisation process
Inventor: FELDMAN JULIAN
Filed: 1968-12-24
Abstract: 1,224,529. Dimerization of nitriles. NATIONAL DISTILLERS & CHEMICAL CORP. 24 Dec., 1968, No. 61441/68. Addition to 1,067,042. Heading C2C. Unsaturated compounds having nitrile groups in the α- and γ-positions are prepared by dimerization of an α,#-unsaturated nitrile in a solvent mixture including an alkanol in the presence of tricyclopentyl phosphine as catalyst. Monomers specified are acrylonitrile, fumaronitrile and cinnamonitrile, the conversion of acrylonitrile to 2-methylene-glutaronitrile being exemplified. Polymerization inhibitors, e.g. p-t-butyl catechol may be added to the reaction mixture.
Patent GB-2035258-A (GB)
Title: Bag
IPC: B65D75/58
Filed: 1978-11-27
Abstract: A bag, particularly for containing polythene bags or sheets, comprises superimposed layers of material which are perforated (12) adjacent one edge so as to form a tear-off portion (14) extending part way along the edge. Where polythene bags are to be stored in the bag, they are inserted as a stack (9) which is folded in half with the fold adjacent the tear-off portion (14) so that when the tear-off portion is removed to leave an aperture, a user can insert a hand through the aperture, grip the outermost bag each side of the fold and draw the bag through the aperture. <IMAGE>
Patent GB-2008509-A (GB)
Title: Vehicle steering system with hydraulic power assistance
IPC: B62D6/02
Filed: 1978-11-28
Abstract: A steering system with hydraulic power assistance for vehicles, has a servomotor (10) adapted to act on the steered members of the vehicle, and a power steering pump (4) which is driven for example by the vehicle's engine and the delivery of which is controllable in dependence on the travelling speed so that it falls with increased travelling speed. An axially displaceable steering valve (8) is provided which is adjustable by an actuating means (steering wheel) and which initiates the operation of the servomotor (10). The steering valve (8) is so constructed as to be open in its mid position. A throttle (6) is provided which has a variable passage resistance and which is connected in the delivery circuit of the pump (4) on the suction or pressure side thereof. The passage resistance of the throttle (6) is controllable in dependence on the travelling speed of the vehicle in such a way that the resistance increases as the travelling speed increases. <IMAGE>
Patent GB-2021488-A (GB)
Title: Ferry Vessel Provided With Ramps
IPC: B63B27/14
Filed: 1979-04-10
Abstract: In a ferry vessel having at least one pair of ramps 8, 10 for interconnecting two decks, a single common elevating means is arranged to operate the ramps between a first position in which one of the pair of ramps is in its inclined position and on the other is in its stowed position and a second position in which the one ramp is in its stowed position and the other in its inclined position. As described, each ramp is connected via a pulley and cable system 23-28 to the free end of a piston 12 and the opposite end of a cylinder 13 respectively and is held in a horizontal stowed position by latches 31. Release of one of the latches and extension of the piston/cylinder device lowers the associated ramp. <IMAGE>
Patent GB-2315944-A (GB)
Title: Improvements relating to surveillance apparatus
Inventor: GUPPY JOHN REGINALD
IPC: H04N7/18
Filed: 1979-05-16
Abstract: In an infra-red surveillance system, a digital memory 1 has a storage location for each of a number of zones, defined by azimuth and elevation co-ordinates, the zones together covering 360{ in azimuth and 20{, for example, in elevation. In each location there is stored a data word built up from the responses on a zone in successive scans. Each word can be read into a decoder 5 which selects an appropriate video display level in the form of a two-bit word which is then stored in a buffer store 6, which the display on a cathode ray tube 2 is controlled. A manually controlled cursor circuit 8 generates a cursor address which results in a cursor display at the corresponding position on the cathode ray tube. The display is in the form of four strips, one above the other, each representing a quadrant of azimuth.
Patent GB-2030237-A (GB)
Title: Sealing ring assemblies
IPC: F16J15/32
Filed: 1979-07-18
Abstract: A rod or piston sealing assembly of the V-ring pack type comprises at least two sealing rings 1, 2 made of a thermoplastic plastics material, and an energising ring 3 made of a synthetic rubber which is softer than the plastics of the sealing rings. The rings 1, 2 and 3 fit coaxially together with the energising ring 3 at one end of the assembly. The rings are not bonded to each other but preferably snap fit one into the other, each sealing ring 1, 2 having a concave end face 4 into which the adjacent ring fits. The sealing rings have inner and outer peripheral sealing lips 5 and 6, and the energising ring has an inner peripheral sealing lip 14 having a diameter which is less than the diameters of the inner lips 5 of the sealing rings. In addition, the energising ring 3 has on its end face 11 remote from the sealing rings 1 and 2 a series of circumferentially spaced, axially projecting, circular bosses 12 having flat end faces 13. <IMAGE>
Patent GB-2031029-A (GB)
Title: Transfer Printing of Cellulose Fibres
IPC: D06P1/642
Filed: 1979-08-24
Abstract: In transfer printing textile material containing cellulose fibres the fabric is impregnated with an aqueous or aqueous alcoholic solution of cross- linkable triazine derivatives of formulae   <IMAGE>  in which the R's are     a) 0 to 2 are hydrogen, b) 2 to 5 are R<1>-OCH2 groups, in which R<1> represents hydrogen or alkyl with 1-4 carbon atoms,   c) 1 to 3 are R<2>-O-CH2 groups, in which R<2> represents   <IMAGE> R<3> represents alkyl with 1 to 7 or alkyl or alkylaryl with 8 to 22 carbon atoms, R<4> represents hydrogen and/or methyl, and n=5-30, d) 0 to 2 are R<5>-O-CH2 and/or R<5>-COOCH2 groups, in which R<5> represents alkyl or alkylaryl with 8 to 22 carbon atoms, provided that d) is 0.1 to 2 when R<3> represents alkyl with 1 to 7 carbon atoms, and/or   <IMAGE> in which the R's are     a) none is hydrogen,   b) 2.1 to 3.9 are R<1>-OCH2 groups, in which R<1> is as above c) 0.1 to 1.0 are R<2>-O-CH2 groups, in which R<2> is as above; R<3> represents alkyl with 1 to 7 carbon atoms or alkyl or alkylaryl with 8 to 24 carbon atoms, R<4> is as above d) 0 to 0.9 are R<5>-O-CH2 groups, in which R<5> represents alkyl or alkylaryl having 8 to 22 carbon atoms, in the presence of a cross-linking, catalyst, and the materials are dried, printing is then carried out using sublimable dyes cross-linking taking place before or during printing by the action of heat.
Patent GB-2057059-A (GB)
Title: Rotary positive-displacement fluid-machines
IPC: F04C2/356
Filed: 1979-08-28
Abstract: A pump or compressor has two cylindrical eccentric rotors (16, 22) which co-operate with a common sliding-vane 26 and revolve at identical angular velocities in cylindrical chambers (14, 20) with separate intake ports (36, 40) and discharge ports (38, 42). The chambers may be series connected to each other. The vane is separated from the walls 52, 58 of a guideway 34 by fluid-filled gaps 57: similar gaps 55 may be provided between the vane ends and the rotors. The guideway walls or the vane may be made of graphite, P.T.F.E. or a porous metal or plastics material. The rotors may be connected to each other by a belt-and-pulley system, Figs. 2 and 3. <IMAGE>
Patent GB-2039731-A (GB)
Title: An apparatus for supporting a patient
IPC: A61G7/00
Filed: 1979-11-12
Abstract: An apparatus 1, Fig. 1, e.g. a nursing or orthopaedic bed, for supporting a patient comprises a rigid undercarriage 2 carrying a rigid frame 7 turnable, e.g. pivotable, about a horizontal axis. A further rigid frame 3 is slidably and/or removably supported on the frame 7 and can be releasably locked thereto by first locking means 100, Fig. 4. The frame 7 carries patient-supporting frames 4, 5 which are rotatable about a longitudinal axis of the apparatus through at least 180 DEG  and which can be releasably locked in one or more predetermined positions by second locking means 50. <IMAGE>
Patent GB-2039788-A (GB)
Title: Breathable Fabric and Sack
IPC: D06M15/227
Filed: 1979-11-12
Abstract: A breathable fabric is disclosed, which comprises a structure woven from thermoplastic polymeric tapes, wherein the woven structure 11 is coated with a foamed permeable coating 12. The tapes are preferably made from polyethylene having a density between 0.940 and 0.970 g/cm<3>. The coating is preferably a lace coating 12 (thus leaving holes 13 in the coating) made from polyethylene having a density between 0.910 and 0.960 g/cm<3> prior to coating the structure. The fabric is useful for making breathable sacks. <IMAGE>
Patent GB-2073087-A (GB)
Title: Apparatus for forming strands from mouldable confectionery substance
IPC: A23G3/02
Filed: 1980-03-27
Abstract: An apparatus for forming strands from mouldable confectionery substance has two co-operating nip rollers (6, 7) which are each provided in their circumferential surfaces with axially alternating circumferentially complete grooves 6a, 7a and ridges 6b, 7b, the ridges of each roller entering into and sealing the grooves of the other roller. The apparatus is provided with means for supplying a ribbon of mouldable confectionary substance to the nip between rollers 6, 7 so as to be formed into strands 5a, 5b in their respective grooves. The ribbon of mouldable confectionery ribbon is cut into strands by the engagement of the side faces of the grooves and ridges. The rollers 6, 7 may alternatively each comprise a series of adjacent disks or rings provided with elements for producing the strands. <IMAGE>
Patent GB-2052260-A (GB)
Title: Engineering improved chemical performance inplants
IPC: A01N57/20
Filed: 1980-05-12
Abstract: The effect of certain agricultural chemicals, viz fungicides, herbicides, insecticides, nematicides and plant- growth regulators, is improved by co- administration of them with an additive viz a surfactant and/or a coating agent one or more additives which holds the agricultural chemical in a layer on the leaf surface during a period when it is not needed by the plant (as during the winter months) and releases it as a result of increased temperature and/or light degradation in the Spring. The said agricultural chemicals and additive(s) may be applied simultaneously or within up to about 15 days of one another.
Patent GB-2085426-A (GB)
Title: Glycolaldehyde or ethylene glycol from formaldehyde
IPC: C07C29/14
Filed: 1980-07-28
Abstract: An aqueous 30 wt.% solution of formaldehyde trickled with an equal volume of NaOH solution over a zeolite (NaX, 5A, or Na Mordenite) at 94 DEG C, 1 atm, 1.21-2.36 liquid hourly space velocity, catalytically condenses to HOCH2CHO, glycolaldehyde, a fraction of which then converts to HOCH2CH2OH, ethylene glycol, by cross-Cannizzaro side reaction. Zeolite degradation is prevented by maintaining pH near 11. Selectivity can be controlled so that less than 1 % byproduct formose sugars are made. Methanol and sodium formate are also byproducts. All of the remaining glycolaldehyde could, in principle, be converted to ethylene glycol in either a subsequent cross-Cannizzaro reaction or a hydrogenation step. Thus, the reaction represents a potential non-petrochemical route for either glycolaldehyde or ethylene glycol from CO + H2, via methanol and formaldehyde. <IMAGE>
Patent GB-2062848-A (GB)
Title: Hob-plates
IPC: F24C3/08
Filed: 1980-08-11
Abstract: A cooking surface comprises a flat ceramic body 2 having openings 4 for gas burners and/or electric hot- plates, and defining an internal space into which a liquid can be introduced, effective to disperse throughout the body 2 the localized heat or hot spots generated by the burners and/or hot- plates. <IMAGE>
Patent GB-2058779-A (GB)
Title: A process for preparing 2,5- dichloro-3-nitroterephthalic acid
IPC: C07C205/58
Filed: 1980-09-29
Abstract: A process for preparing 2,5- dichloro-3-nitroterephthalic acid comprises the direct nitration of 2,5- dichloroterephthalic acid in an essentially anhydrous medium comprising nitric acid, or its metal salts, in sulphuric acid. An essentially anhydrous medium is defined as having a water content of less than about 25%.
Patent GB-2065324-A (GB)
Title: Optical fibres
IPC: G02B6/44
Filed: 1980-11-28
Abstract: The protective resin covering of a vitreous optical fibre 56 consists of a buffer coat 57 of a readily deformable soft resin, applied directly to the fibre surface, a capping layer 58 of a resin which provides the buffer coat with a surface of greater hardness and lower friction, and an outer jacket 59 of a hard, abrasion-resistant resin extruded over the capping layer and in intimate contact therewith. In a specific example the buffer coat 56, capping layer 58 and outer jacket 59 are respectively formed of a silicone resin, "Kynar", and "Hytrel" (Registered Trade Marks). The buffer coat and capping layer are applied to the fibre in liquid form and then cured, in-line immediately after the fibre is drawn, and the outer jacket may be applied either in-line also, or in a subsequent operation. <IMAGE>