baber/WOPTO huggingface dataset:
Patent GB-1481335-A (GB)
Title: Permeable membrane separation device and method
IPC: B01D61/08
Filed: 1974-10-10
Abstract: 1481335 Membrane separation; static mixer KENICS CORP 10 Oct 1974 [2 Nov 1973] 43968/74 Headings B1C and B1X A semipermeable membrane separation device comprises a conduit having a wall comprising a semipermeable membrane 10; means for passing a first fluid through the conduit; means for a second fluid outside the conduit 15, and a plurality of curved sheet-like elements 21 extending longitudinally within the conduit, each of the elements having a curvature to impart a transverse rotational component of flow to the first fluid, the elements being arranged in alternating right- and left-handed curvature groups whereby the transverse rotational component is alternatively reversed. Methods for separating a solvent from a solute and for mixing fluids using the above apparatus are disclosed.
Patent GB-861211-A (GB)
Title: Improvements in or relating to air-feeding devices for oil-burners
IPC: F23D11/00
Filed: 1959-12-28
Abstract: 861,211. Air supply to burners. SOC D' ETUDES DE VEHICULES S.E.V. Dec. 28, 1959 [Dec. 31, 1958], No..43991/59. Class 75 (1). A burner comprises an inner casing 1 surrounding a fuel-feeding pipe 2, and an outer flat cylindrical casing 4, into which air enters through a radical pipe 4<SP>1</SP> and which is subdivided inwardly by a number of coaxial walls. 6,7,8,9 into a plurality of annular chambers communicating with one another through ports 10 formed in the walls to subdivide the air, which finally enters the casing 1 radially through an annular slot 5 (not shown). Instead of ports 10, passage ways extending through the height of the wall or annular slots extending through, the periphery of the walls may be provided. The number of openings in the walls increases for the walls nearest the burner and the openings are symmetrically shifted with reference to one another.
Patent GB-1013101-A (GB)
Title: Improvements in or relating to duplicating
IPC: B41M/
Filed: 1961-12-08
Abstract: 1,013,101. Thermographic materials and processes. COLUMBIA RIBBON AND CARBON MANUFACTURING CO. Inc. Dec. 8, 1961 [Dec. 9, 1960], No. 43992/61. Heading G2C. A thermographic transfer sheet comprises a support coated with a porous, spongy layer comprising a non-transferable film-forming material in which is dispersed a heat-transferable composition consisting of a solid material incompatible with the film-former and a colour-former. Images may be carried on the other side of the support. The film-forming material may be zein, a vinyl polymer, a hydrocarbon polymer, gelatin, albuium, casein, a cellulose ether, starch, gum arabic or tragacanth. The solid material is a polyethylene glycol or a wax which may contain oil. The colour former may be a dye or one component of a two-component colour-forming system. The transfer sheet is contacted with an original (if images are not present in the transfer sheet) and a receptor sheet and heated so that the composition transfers imagewise to the receptor sheet which contains a second component of a colour forming system if necessary.
Patent GB-1201984-A (GB)
Title: Oral compositions for calculus retardation
IPC: A61K8/55
Filed: 1968-09-17
Abstract: 1,201,984. Dentifrices; mouthwashes. PROCTER & GAMBLE CO. 17 Sept., 1968 [18 Sept., 1967; 27 Dec., 1967; 22 May, 1968], No. 44154/68. Addition to 1,110,987. Heading A5B. An oral composition for inhibiting the formation of dental calculus comprises from 0.01-10% by weight of a polyphosphonate having one of the general formulae:- wherein R 1  and R 2  are H or CH 2 OH; n is 3-10; R 3  is H, C 1 -C 20  alkyl, C 2 -C 20  akenyl, aryl, benzyl, phenylethenyl, halogen, -OH, -NH 2 , substituted amino, -CH 2 COOH, -CH 2 PO 3 H 2 , -CH(PO 3 H 2 )OH or -CH 2 CH(PO 3 H 2 ) 2 ; R 4  is H, C 1 -C 4  alkyl, -NH 2 , benzyl, halogen, -OH, -CH 2 COOH, -CH 2 PO 3 H 2 , or -CH 2 CH 2 PO 3  H 2  provided that when R 3  is -OH R 4  is not CH 3  or a pharmaceutically acceptable non-toxic salt thereof or mixtures thereof in admixture with a carrier, other than water alone, suitable for use in the oral cavity, the pH of the composition being from 5-11. The compositions are suitably in the form of pastes or mouthwashes.
Patent GB-1353347-A (GB)
Title: Railway vehicle structures with power banking
IPC: B61F5/14
Filed: 1971-09-22
Abstract: 1353347 Railway vehicle undercarriages GENERAL STEEL INDUSTRIES Inc 22 Sept 1971 [28 Jan 1971] 44172/71 Heading B7L A railway vehicle comprises longitudinally spaced wheeled axles 3, bogie framing 5, 5, 7, 7, 9, 9 supported thereon, vehicle body framing U supported directly from the bogie framing, by air springs 23, 25, 29 carried by and outwardly of the sides of that framing, longitudinal anchor links 59 connected between the springs and the bogie framing, generally transverse links 63 pivotably connected to the body framing U by brackets 65 and to the springs by brackets 61, and a transversely acting pneumatic motor 71 mounted on the bogie framing, from a longitudinal member 73, and pivotally connected at each end to transverse links 79 also connected to the air springs. The bogie framing has a depending centre pin 43 connected by a draft link 48 to a depending pin 51 on the framing U. Elastomeric bushes are provided between the pins 43, 51 and the link 45. Each air spring comprises a reservoir 23 connected to the lower ends of swing links 17, 19 whose upper ends are pivoted to brackets 13 extending from a transverse frame 7, 7, 9, 9 which is mounted in the bogie side frames 5 by rubber-metal chevron springs 11. The reservoir 23 of each spring is connected by a flexible wall 25 to a cap member 29 having an aperture 31 bounded by an elastomeric grommet 32 on which rests a horizontal side bearing plate 33 secured to the framing U. By providing predetermined pressure in the reservoirs 23, the plates 33 can be raised out of compressive engagement with the grommets 32 to facilitate relative horizontal movement of the plates relative to the caps 29. The construction permits the vehicle body B to be banked, when the vehicle is negotiating curved track, about a central longitudinal axis T by the motor 71 under the control of a damped pendulum 89 operatively connected to an air valve 83 connected by conduits 87 to the ends of the motor and to a compressed air supply conduit 85. The transverse links 63 permit rotational movement of the framing U about the central vertical axis S of the bogie, axial projections of the links 63 passing through that axis. In another embodiment the transverse bogie frame is hollow, and supports a pair of air springs at each side. The spring cap at each side is common to the pair of springs and the caps have apertures bonded by concave spherical surfaces engaging, with the interpositioning of elastomeric grommets, convex spherical surfaces of bearings on the body underframe.
Patent GB-928439-A (GB)
Title: A process and apparatus for strengthening natural rock facings and artificial stonework
IPC: E21D9/00
Filed: 1961-12-11
Abstract: 928,439. Strengthening natural rock. SCHERING A.G., and CONCORDIA BERGBAU-A.G. Dec. 11, 1961 [Dec. 14, 1960], No. 44294/61. Class 68 (1). [Also in Groups V and XXVIII] A process for strengthening natural rock faces or artificial stonework comprises injecting into a natural cavity or an artificial borehole in the facing or stonework a mortar comprising 70- 15% of a synthetic resin binding agent consisting of an epoxy resin (such as an aromatic polyglycidyl ether) and a cold hardening agent (such as an aminamide or amino-imidazoline of monomeric, dimeric and/or polymeric, homo- or copolymerized or epoxidized unsaturated fatty acids and polyamines) and 30-85% of a filler (such as sand or gravel). The apparatus for carrying out this process, see Fig. 3, comprises a piston pump with a lateral supply inlet 16, the piston 9 having a flexible sealing facing 11 of fabric reinforced rubber which is of slightly greater diameter than the cylinder 10. A spigot nozzle with a sealing cock to prevent the escape of mortar once the injection apparatus has been removed, is used for the injection and alternative forms of this are illustrated in Figs. 1 and 2 (not shown).
Patent GB-1220215-A (GB)
Title: Improvements in or relating to mixing processes
Inventor: BAILEY COLIN
IPC: B01F29/60
Filed: 1966-10-04
Abstract: 1,220,215. Ammonium alginate Solution. NATIONAL RESEARCH DEVELOPMENT CORP. 4 Jan., 1968 [4 Oct., 1966], No. 44320/66. Heading C3U. [Also in Divisions B1, C1 and D1] In a process of dispersing fibres in a viscous or visco-elastic liquid, the fibres may be asbestos, or silicon nitride or carbide whiskers, and the liquid a mixture of ammonium alginate, acetone and water. Fibres of glass, cotton and wool may also be dispersed by the process.
Patent GB-920981-A (GB)
Title: Improvements in or relating to the siphons of siphonic flushing cisterns
Inventor: SHANKS KENNETH LESLIE
IPC: E03D1/08
Filed: 1960-12-28
Abstract: 920,981. Siphon-discharge water-wastepreventers. SHANKS & CO. Ltd. Dec. 28, 1961 [Dec. 28, 1960], No. 44408/60. Class 26. A siphon for a flushing cistern consists of a body 1 formed with two side-by-side passageways 2, 4 connected at one end, a cylinder 5 open to the passage 4 receiving a piston 6 attached to a rod 7, two spaced co-axial guide passageways 8, 9 at the same end of the cylinder 5 as the passage 4 opens into which receive the rod 7, and a chamber 10 between the passageways 8, 9 into which they debouch.
Patent GB-1014944-A (GB)
Title: Polyolefine compositions
Inventor: BOND JOHN ALVEY
IPC: C08F10/00
Filed: 1963-11-11
Abstract: A polyolefin composition is produced by the sequential polymerization of at least two different a -olefins to give a free-flowing slurry or suspension of polymer in diluent, in the presence of a catalyst comprising an organo-aluminium activator and the product obtained by reducing titanium tetrachloride in inert hydrocarbon solution by adding an aluminium dialkyl chloride gradually thereto at a temperature of between -20 and +20 DEG  C. using a molar ratio of aluminium dialkyl chloride to titanium tetrachloride of from 0.55/1 to 1.5/1. Suitable organo-aluminium activators include aluminium trialkyls and triaryls, aluminium alkyl halides and aluminium alkyl hydrides. Preferably two monomers are present together in the polymerization zone so that some degree of random copolymerization may take place.  In the examples propylene is first polymerized in the presence of hydrogen in a mixed aliphatic hydrocarbon diluent and then while some propylene monomer still remains ethylene is introduced.  The catalyst is prepared by reducing titanium tetrachloride with aluminium diethyl chloride (using a solution of the sesquichloride) and activating the washed slurry so produced with aluminium diethyl chloride.  The polymerized product is purified by treating with isopropyl alcohol, water and steam distillation.
Patent GB-1248933-A (GB)
Title: Improvements in or relating to axial piston pumps or motors
IPC: F04B49/06
Filed: 1968-09-24
Abstract: 1,248,933. Swash-plate pumps and motors. ABEX CORP. Sept.24, 1968 [Oct. 30, 1967], No.45377/68. Headings F1A and F1S. A revolving cylinder swash-plate pump or motor 12 has ports, one in the side of each bore which is covered at all times by the piston, which are in constant communication with a common inlet for high-pressure fluid, and a passage 72 formed in each piston to communicate between a piston shoe 60 and the side wall 49 of the piston so that in operation a restricted flow of fluid is supplied to the shoe. In a swash-plate motor a pressure source 10 supplies hydraulic or pneumatic fluid through an adjustable pressure control valve 11 which may be reversible to a hydraulic motor 12. Motor 12 includes a cylindrical centre body 35, a port block 36 and a head plate 37. A roller bearing 41 rotatably journals the cylinder block 42 which drives a shaft 43 to which the block is loosely connected by splines 44. Cylinder block 42 has nine cylindrical bores 49 which communicate through openings 51 to arcuate pressure and exhaust ports 52, 53. Each bearing shoe 60 passes through an opening formed in a hold-down plate 62 which abuts shoulders 63 of the shoes and thereby maintains the shoes in engagement with the swash-plate 57. The motor may be provided with means for varying the angle of the swash-plate, thereby varying the displacement of the pistons. The pressure fluid is supplied constantly into the recess 68 of the shoe via rotating seal 82 to circumferential grooves 85 in each cylinder bore and then through bores 71, 72 which end in a circumferential groove 74. Pressure in chamber 77 and groove 74 is balanced and leakage of fluid between them is zero. Groove 85 is positioned so that it is never directly aligned with piston grooves 74, nor does it open directly to the tank chamber 38 when the piston is in its innermost position. Alternatively a recess can be provided in the piston or passage 84 can enter bore 49 directly. The separate shoe pressure supply system reduces fluid leakage and establishes pressure for vectors which act on the piston tending to recentre it when it is cocked or tipped in its cylinder bore. The separate pressure feed means may also be incorporated in pumps which are convertible into motors.
Patent GB-1102712-A (GB)
Title: Improvements in or relating to a mould assembly for use in the manufacture of optical products
Inventor: DAVY JOHN RUPERT
IPC: C04B35/645
Filed: 1963-11-16
Abstract: 1,102,712. Very high pressure apparatus. BARR & STROUD Ltd. 4 Nov.. 1964 [16 Nov., 1963], No. 45517/63. Heading B1X. [Also in Division B5] A pressure mould for use in hot pressing a powdered compound such as magnesium fluoride, zinc sulphide or zinc selenide to form a solid, polycrystalline optical element comprises a pair of opposed anvil blocks, and a powder container located for compression between the blocks and including a ring and a closure engaging an end of the ring, the ring and closure being composed of material which under hot pressing conditions is capable of plastic deformation, whereby during hot pressing of the mass of powder packed into the container, the closure beds sealingly against the ring end so that the packed powder is sealed within the container throughout the compression of the mass of powder, and in the event of variations in density throughout the packed mass of powder the container deforms in accordance with the variations, without loss of seal, to ensure uniform distribution of pressure throughout the mass of powder. In the moulding of an optical disc, powder X is hot pressed in a mould consisting of a pair of upper and lower steel anvil blocks 2, 3 with opposed horizontal flat-ground faces 2A, 3A, between which a mild steel rectangular-section ring 1 is disposed, with a mild steel disc 4 having a bevelled edge between the under face 2A of the anvil block 2 and the upper end of the ring. Layers 7, 8 of refractory powder, e.g. alumina layers, and flexible refractory sheets 9, 10, e.g. mica sheets, are provided on the opposed faces 4A, 3A of the disc 4 and anvil block 3, respectively, and a refractory powder layer 11 is provided between the anvil 2 and the disc 4. An induction heater has its coil 13 surrounding the ring 1 and the anvil blocks 2, 3, and an 80 ton hydraulic press receives the ring-and-anvil assembly between its platens. The alumina 'layers prevent adhesion during hot pressing and the mica sheets prevent the alumina powder from entering the powder X. Thick heat-insulating boards 14, 15 are provided between the anvil blocks 2, 3, and the press platens. During the hot pressing, the bevelled disc 4 expands the ring 1 uniformly to frustoconical shape and enters the ring 1 to compress the powder X uniformly. The optical disc with the ring 1 attached is removed from the mould after cooling and the ring removed by dissolving in dilute nitric acid. Moulds for the production of optical domes and curved windows are also described.
Patent GB-967031-A (GB)
Title: Sealing arrangement for rotary piston internal combustion engines
IPC: F01C19/10
Filed: 1962-12-03
Abstract: 967,031. Rotary piston I.C. engines. CURTISS-WRIGHT CORPORATION. Dec. 3, 1962 [Dec. 7, 1961], No. 45595/62. Heading F1F. The rotor or piston 24 of a rotary piston I.C engine of the n and n+1 lobe type is sealed against end walls 14 (not shown) and 16 and the inner surface 19 of peripheral wall 18 of an outer body by end wall sealing member 52 and peripheral wall sealing member 54 arranged in the apex of each lobe; the member 54 being shorter in length than member 52 when the members are at ambient temperature and having a higher thermal coefficient of expansion than member 52; means 58 being provided to urge member 54 into sealing engagement with peripheral inner wall 19. As shown, member 54 nests in member 52 but is separated from it by spring 58 leaving an air space 56 between the sealing members which partially thermally insulates member 52 from member 54. Member 52 is a tight fit in groove 50 whereas member 54 is a sliding fit. A plurality of one-piece sealing strips 70 are located in grooves 68 in the rotor end faces, each strip 70 extending between each pair of adjacent rotor apex portions, the member 52 at each apex being in sealing contact with each sealing strip 70. In a modification (Fig. 6 not shown) the sealing members 52, 54 have opposing surfaces which limits axial movement of the member 54. In a further modification (Figs. 7 and 8 not shown) the spring is located between member 52 and the bottom of slot 50 and the member 54 is supported at each end by member 52. In this modification, mention is also made of an intermediate seal of the type disclosed in Specification 908,378.
Patent GB-1432907-A (GB)
Title: bodies
IPC: B65G33/14
Filed: 1974-10-22
Abstract: 1432907 Screw conveyers; discharging hoppers LA FAROE 22 Oct 1974 [24 Oct 1973] 45643/74 Headings B8A and B8S An elevator to feed grinding balls into a grinder column 55 comprises a conveyer screw 11 rotating inside a tube 10 at an angle of 30 to 60 degrees to the horizontal (and preferably at 45 degrees). The lower end of the tube 10 dips into a ball-reception hopper 13, while the upper end connects with a shoot 15 to discharge the balls into the grinder column 55 through its access door 56. The hopper 13 is in the shape of a triangular pyramid and has a bottom wall perpendicular to the tube axis, and two side walls at an angle of approximately 45 degrees on each side of the vertical plane containing the tube axis, one side wall 21 is tangential to the tube 10, while the other 22 is radial thereto. The first part of the screw 11, in the hopper 13, has an increasing pitch, feed of the balls to the screw 11 being controlled by a long roller 32, a short roller 33 and a bar 36, excess balls being recycled to the lower turns of the screw 11 down a spiral ramp 30, which ends the open section of the tube 10. Lubricant from spray apertures 53 is sprayed on to the balls in the hopper 13 to reduce friction.
Patent GB-1248775-A (GB)
Title: An improved lapping head for helically lapping tape on to an electric conductor or other support
Inventor: CHRISTMANN DETLEF
IPC: H01B13/08
Filed: 1968-09-26
Abstract: 1,248,775. Covering cores by winding. FELTEN & GUILLEAUME CARLSWERK A.G. 26 Sept., 1968 [26 Sept., 1967], No. 45724/68. Heading B8G. [Also in Divisions F2 and G3] In a lapping head wherein a conductor 4 is wrapped with material 8 from a coaxially mounted and electromagnetically braked reel 10, a guide 12 is provided for the material passing to the conductor, the guide being mounted on a coaxial sleeve 15 which is axially movable relative to the head for adjusting the electromagnetic braking force applied to the reel 10 in response to tension variations in the material. As shown, a tape, e.g. paper, plastics, strip or wire (or other elongated insulating or conducting material) 8 is unwound from reel 10 over a post on a rotatably driven body 11. Body 11 carries at its lower end two annular plates 5, 13 which are magnetized by a fixed electromagnet 9. The plates 5, 13 each have four sector shaped poles, the sets of poles being circumferentially offset from each other on the two plates. The reel support 1 is rotatably mounted in body 11 and carries at its lower end a non-magnetic metallic disc 3 mounted between plates 5, 13. As the lapping head rotates, reel support 1 rotates at a different speed to body 11 and thereby plates 5, 13 exert a braking force on disc 3. The braking force on disc 3 can be adjusted (a) manually by changing the current fed to coil 9 and (b) automatically during winding to keep the tape 8 tension constant by variation of the position of permanent magnet or soft iron core 14 caused by the tension in tape 8 lifting sleeve 15. The disc 3 may be radially slotted so that the difference in speed of disc 3 and plates 5, 13 during normal running produces intermittent current impulses in coil 9. These current impulses can control a signalling device or stop motion which operates upon breakage of the tape &c. On breakage of the tape disc 3 rotates at the same speed as plates 5, 13 and produces no impulses in the coil. In alternative embodiments, (a) the sleeve 15 is spring loaded or is spring urged in a horizontal plane and (b) the sleeve controls the current in coil 9 by varyingly obscuring a light ray operating a photo-electric resistance, or magnetic, capacitative or inductive device.
Patent GB-973706-A (GB)
Title: Improvements in transistor amplifier-limiter devices
IPC: H03K5/08
Filed: 1961-12-22
Abstract: 973,706. Transistor limiter circuits. C.I.T. COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. Dec. 22, 1961 [Dec. 29, 1960], No. 46078/61. Heading H3T. In an amplifier-limiter circuit as shown in Fig. 2, one terminal of a sine wave generator 1 is connected to the base of transistor 2 and its other output terminal connected through a resistor 7 to the positive pole of a D.C. supply and to earth through a diode 6, the diode 6 limiting the base current when the latter reaches a predetermined value in the positive half-cycle of the generator output. During the negative cycles of the generator the transistor base is driven negative and the resistance of the base-emitter diode becomes very high so that when the transistor is cut off the collector voltage is determined by the battery 5 and not by the input voltage. During the positive cycles of the generator the transistor conducts normally so that the collector potential becomes more negative. However, when the current flowing through resistor 7 and diode 6 is balanced by the current flowing in the base circuit of the transistor the potential drop across the diode 6 becomes zero and the base circuit open-circuited with the result that no further increase in the base current is possible. Thus both positive and negative cycles of the collector voltage are limited. In addition, the inclusion in the circuit of resistor 7 results in an increase in the load resistance of the generator at all stages of the generator's output cycle so that the limiter does not produce any damping on the generator.
Patent GB-1176299-A (GB)
Title: A Sleeve for Switchboard Plugs
IPC: H01R13/56
Filed: 1968-09-27
Abstract: 1,176,299. Plastics springs. TELEFONAKTIEBOLAGET L. M. ERICSSON. 27 Sept., 1968 [4 Oct., 1967], No. 46167/68. Heading F2S. [Also in Division H 2] A plastics, e.g. polypropene, sleeve comprises a portion 1 suitable to ensleeve a switchboard plug and a prolongation thereof comprising a plurality of spiral filaments 2, 3, 4, running parallel to one another and formed integral with the ensleeving portion 1, which filaments provide resilience of the prolongation suitable for reducing mechanical stresses in the plug end of a cord connected to the plug. The number of spiral filaments may range from two to five.