baber/WOPTO huggingface dataset:
Patent GB-1263630-A (GB)
Title: Improvements in or relating to heart valve prosthesis
IPC: A61F2/24
Filed: 1969-10-01
Abstract: 1,263,630. Heart valve prosthesis. AMERICAN HOSPITAL SUPPLY CORP. 1 Oct., 1969 [7 Oct., 1968], No. 48309/69. Heading A5R. A heart valve prosthesis comprises an orifice ring 10, which is surrounded by a cushion ring 25 for suturing to heart tissue, a moveable ball 15 held captive between the ring 10 and a cage comprising three or four legs 11, 12, 13 meeting at the apex, the assembly being covered by a woven or knitted cloth through which protuberances 35, 50 on the orifice ring 10 and legs 11, 12, 13 protrude to protect the cloth from wear by the ball 15. The orifice ring 10 and the cushion ring 25 are each covered by a separate cloth sleeve 20, 26 the sleeves being secured together by stitching 29, 31. Windings 28 secure overlapping joins in the sleeves in a recess 23 in the orifice ring 10. The cage legs are each covered with a double cloth layer and held together by stitching at the apex. In a modification the orifice diameter is larger than the ball diameter and another set of protuberances (61) Fig. 5 (not shown), are formed on the orifice ring 10 to prevent the ball from escaping through the ring 10. This allows a controlled amount of leakage when the valve is closed, between the ball 15 and the sleeve 20. The ball 15 may be made of hollow metal, whilst the cushion ring 25 is made of silicone foam rubber or polytetrafluoro ethylene felt. The ring 10 and cage legs 11, 12, 13 may be constructed from metal or plastics.
Patent GB-1194770-A (GB)
Title: Tubular Flexible Remote Control Device
IPC: F16C1/20
Filed: 1968-10-11
Abstract: 1,194,770. Bowden mechanisms. CONTROLEX CORP. OF AMERICA. 11 Oct., 1968 [12 Oct., 1967], No. 48331/68. Heading F2K. In a Bowden mechanism for transmitting tensile and compressive forces comprising a flat load bearing strip 16 engaged by caged guide balls 22 movable along grooved guide members 21, the latter are secured to concentric nested anchoring sleeves 26, 27, the arrangement enabling the strip and guide ball assembly to pass freely through the anchoring sleeves so that the portion of the strip 16 between the sleeves and the actuated member 12, 12a is provided with full lateral support. The sleeves are formed with pairs of oppositely inclined helical slots (28, 29) at the junctions of which are mounted studs 31a formed on oppositely disposed members 31 let into longitudinal recesses (32) in the guide strips 21. The sleeves are held between shoulders 14e, 35 in the outer anchoring members so that although axially fixed they are free to rotate in opposite directions to allow axial movement of members 31.
Patent GB-1162768-A (GB)
Title: Photographic Apparatus for Contact Printing of Web Materials
IPC: G03B27/02
Filed: 1967-10-27
Abstract: 1,162,768. Photo-copying apparatus. GENERAL ANILINE & FILM CORP. Oct. 27, 1967 [Nov.1, 1966], No.49033/67. HeadingG2A. A continuous photo-copying machine for exposing a web of sensitized material in contact with a web original each web having perforations spaced along each edge thereof comprises a first and second alignment means 12 and 16 disposed on either side of an exposure station 14 said alignment means consisting of tractor belts 52 and 88, mounted on rollers 56 and 92 and tension rollers 58 and 94 carrying at their edges pins 54 and 90 and retaining plates 48 and 98 and said exposure station consisting of a lamp 30, a transparent curved platen 44, a parabolic reflector 62, an exhaust cover 64 with port 66, a polytetrafluorethylene coated fibre glass screen 68 and tension means for said screen consisting of spring 70 and hook 84. The exposed sensitized material and original are separated at 18 and the exposed material passes to the developer station 20.
Patent GB-1040479-A (GB)
Title: Process for manufacture of polycarbonates
IPC: C08G64/26
Filed: 1963-12-16
Abstract: In a process for the manufacture of polycarbonates by the polycondensation of a monochloroformate of a dihydric phenol in the presence of a solvent for the monochloroformate and the polycarbonate, condensation is effected in the presence of one or more of an oxide or hydroxide of magnesium or an alkaline earth metal, or an ion-exchange resin containing quarternary ammonium hydroxide groups.  The ion-exchange resin is preferably based on a copolymer of an aromatic monovinyl hydrocarbon and an aromatic divinyl hydrocarbon.  In a preferred process, a solution of the monochloroformate of the dihydric phenol in a water-immiscible organic solvent which is also a solvent for the polycarbonate is reacted with an aqueous suspension of the oxide or hydroxide of magnesium or an alkaline earth metal or of the ion-exchange resin, possibly in the presence of a catalyst, e.g. benzyltrimethylammonium chloride.  Examples describe the production of the polycarbonate of bisphenol A.
Patent GB-1088026-A (GB)
Title: Improvements in or relating to analytical atomic absorption spectrometry
Inventor: MACCORMAC ROBERT CECIL HAMILTO
IPC: G01N21/71
Filed: 1964-12-04
Abstract: 1,088,026. Spectrometry. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 25, 1965 [Dec. 4, 1964], No.49560/64. Heading G2J. In apparatus for analytical atomic absorption spectrometry in which material to be analyzed is atomized and dispersed in a hot carrier gas at 4, which is passed unidirectionally along a tube 3 of refractory material, such as alumina, and a light source 1 supplies a spectral line of the element whose concentration is to be measured by determining the intensity of the spectral line after passage through the tube 3 by means of a spectrograph 9, the tube 3 is heated additionally to the hot gas, such as by an electrical winding 10.
Patent GB-1337427-A (GB)
Title: Compositions for electrosensitive recording material
IPC: G03G5/087
Filed: 1970-10-19
Abstract: 1337427 Electrosensitive coating compositions KANSAI PAINT CO Ltd 19 Oct 1970 [12 May 1970 29 June 1970 28 Aug 1970] 49626/70 Headings C3B C3F C3P and C3R [Also in Division D2] A composition for an electrosensitive recording material comprises 100 parts by weight of doped ZnO in 150-1000 parts by weight of binder, the zinc oxide being doped with an oxide of trivalent or tetravalent donor impurity element having an ionic radius of less than 0À74 Angstroms. The dopant element is preferably Co, Ga, Al, Fe, Cr, Si, Ge, Ti or Sn. A fatty acid metallic soap may be added to the composition, e.g. Al oleate, Zn stearate or Cu palmitate. The binder may be a mixture of a polyamide and epoxy resin, an acrylic resin and a polyisocyanate, various modified alkyd resins, a butylated urea melamine or benzoguanamine resin, copoly vinyl chloride-acetate, copoly maleic acidvinyl chloride-acetate or polyacryl polyol. The composition is coated on a substrate coated with Al, Zn or Sn to give a recording element. Specification 1,296,331 is referred to.
Patent GB-1198585-A (GB)
Title: Improvements in or relating to Manual Controls for Motor Cycles.
Inventor: MENNESSON BERNARD RENE
IPC: B62M25/00
Filed: 1968-10-22
Abstract: 1,198,585. Motor cycle hand controls. SOC. D'APPAREILS DE CONTROLS ET D'EQUIPMENT DES MOTEURS. 22 Oct., 1968 [22 Nov., 1967], No. 50033/68. Heading B7E. A motor cycle manual control arrangement comprises a throttle twist grip 2 mounted at the end of a handlebar 1 and connected to the engine, and a lever 3 pivoted to a plug 4 inserted into the end of the handlebar, said lever being connected by means of a sheathed cable 14 to the cycle brakes, and there being a second lever 5 pivoted to the plug and connected by a sheathed cable 16 to the throttle, the arrangement operating such that rotation of grip 1 actuates the throttle alone, whereas actuation of the brake lever also closes down the throttle. Rotation of the twist grip causes a cam surface 2a thereof to contact a nose 5a of lever 5 thus pivoting the lever about pin 6 and actuating throttle cable 16. Actuation of lever 3 causes a pin 7 thereon to pivot lever 5 and thereby operate the throttle. A bolt 9 locks the plug 4 in the handlebar and longitudinally locates the twist grip by passing through a slot 12 therein.
Patent GB-1390529-A (GB)
Title: System for filling and emptying of heat exchangers
IPC: F28F7/00
Filed: 1972-10-31
Abstract: 1390529 Heat exchangers TRANSELEKTRO MAGYAR VILLAMOSSAGI KULKERESKEDELMI VALLALAT 31 Oct 1972 [5 Nov 1971] 50182/72 Heading F4S A system, for filling and emptying a series of air-cooled multipass heat exchangers 8 connected in parallel between a supply conduit 6 and a return conduit 7 and used to cool turbine power plant cooling water, comprises a drain conduit 17 branching off the supply conduit 6, and an inclined conduit 9 connecting the supply conduit 6 with the return conduit 7. Each conduit 6, 7 and 17 has a respective shut-off valve 1, 2 and 3, and automatic vent valves 5 are provided on top of the heat exchangers. The conduit 9 incorporates a flap valve 4 which permits a flow from the return conduit 7 into the supply conduit 6 but prevents a flow in the opposite direction. When the heat exchangers are to be emptied, shut-off valves 1 and 2 are closed and valve 3 is opened so that water will be drained from the exchangers through conduits 7 and 9 and through conduit 6 to the drain conduit 17; ambient air is permitted to enter through valves 5 to prevent the generation of a vacuum in the system. When the heat exchangers are to be filled up, valve 3 in drain conduit 17 is closed and valve 2 in return conduit 7 is opened; water supplied through valve 2 will then enter the exit sides of the exchangers via conduit 7 and the inlet sides via conduit 9 and conduit 6. To ensure automatic operation of the system, the valves 1, 2 and 3 may be connected to a program control unit (12, Fig. 3, not shown) via actuators (13, 14 and 15). The control unit (12) may be connected to a sensor (16, Fig. 4, not shown) for ascertaining the level of water in the heat exchangers.
Patent GB-1165540-A (GB)
Title: Quill Support for Machine Tool Spindles.
Inventor: MCCANN WALTER LEE
IPC: B23Q1/70
Filed: 1967-11-06
Abstract: 1,165,540. Boring machines. GIDDINGS & LEWIS Inc. 6 Nov., 1967 [18 Nov., 1966], No. 50299/67. Heading B3C. A horizontal boring, drilling, and milling, machine 11 comprises a headstock 10, Figs. 1, 2a, 2b, a quill 25 slidable in a pair of hydrostatic bearings 35 mounted in a bore 24 in the headstock, a sleeve 26 rotatably supported in the quill, and a tool spindle 20 keyed to the sleeve at 29. A drawbolt 34 is rotatably supported in the spindle and is adapted to be connected to a tool. A key 55 secured to the quill for axially guiding the latter, co-operates with guide surfaces 57 on housing 22 to form hydrostatic supports. Sleeve 26 and spindle 20 are rotated by a motor 70, Fig. 2a, through gears 74, 75, a planetary speed change 72, and thence through gears 78, 79, and a gear 80 carried on an internally splined shaft 81. The quill is moved axially by a non-rotary ball screw 85 connected to key 55, which co-operates with a ball nut 86 rotated by a motor 89, Fig. 5, through gears 99, 98, 96, 95, clutch 94, shaft 92 and gears 91, 98. Spindle 20 is moved axially by a ball screw 115 rotated by a motor 119, through a clutch 120, and gears 121, 122. Spindle 20 can be fed jointly or independently of quill 26 by engaging the relevant clutch 120 or 94. Motor 89 rotates drawbolt 34 through gears 131, 132, 135, 136, and a clutch 137. The quill is clamped in the required axial position by an hydraulically contractible sleeve 144 which rigidly clamps the screw 85.
Patent GB-1237219-A (GB)
Title: Improved stuffer box crimper
Inventor: BENSON RICHARD WILLIAM HAROLD
IPC: D02G1/12
Filed: 1967-11-20
Abstract: 1,237,219. Crimping fibres. IMPERIAL CHEMICAL INDUSTRIES Ltd. 8 Nov., 1968 [20 Nov., 1967], No. 50462/70. Divided out of 1,237,218. Heading D1F. The stuffer box crimper described in the parent specification is the subject of the claims.
Patent GB-1461015-A (GB)
Title: Electronic switch circuits
IPC: H04M1/677
Filed: 1974-11-21
Abstract: 1461015 Transistor switching circuit; automatic exchanges STANDARD TELEPHONES & CABLES Ltd 21 Nov 1974 50483/74 Headings H3T and H4K An electronic switching circuit has a first transistor TR1 with its emitter connected to a first terminal L1 and its base connected via a resistor R2 to the collector of a second transistor TR2 of complementary type and the emitter of the second connected to a second terminal L2, a second resistor R1 connected between the emitter and base of the first transistor, a third resistor R3 connected between the first terminal L 1 and the base of the second transistor and a control connection to the same base, both transistors conducting when the control connection is open-circuited giving a low impedance between the first and second terminals, and both transistors cut off when it is brought to the potential of the second emitter. A first zener diode Z1 is connected between the two terminals L1 L2 to protect the switching circuit against current surges from a further circuit (not shown) connected between these terminals and a second zener diode Z2 connected between the collector of the first transistor TR1 and the emitter of the second TR2 to fix the voltage between the two terminals L1, L2 when the two transistors conduct. The collector of the first transistor may be connected via a diode D 1  to an output terminal B to provide a low-power D.C. supply in conjunction with terminal C, with capacitor C1 acting as storage. The control connection D may be connected directly to the base of the second transistor (Fig. 2, not shown) or via a third transistor TR3 which has its base connected to the tap of a potential divider formed by R4 R5: A further potential divider R6 R7 may be connected across the zener diode Z2 and the tap connected via a diode D2 to provide positive feeedback to speed up the turn-on. The circuit may be formed as an integrated circuit, with the capacitor C1 possibly a separate entity.  The connection A is said to be an output to associated circuitry such as toll-barring circuitry. The circuit may be connected by the terminals L1 L2 in a telephone subscriber's line, the line being opened when the connection between the two terminals is broken by the circuit, thus disconnecting the subset (2, Fig. 1, not shown). The circuit (3) can be used for toll-barring or to open the subscribers loop when the time allowed has been exhausted.
Patent GB-1075029-A (GB)
Title: Injector burners having replaceable cutting and welding inserts
IPC: F23D14/46
Filed: 1965-11-29
Abstract: 1,075,029. Burners. MESSER GRIESHEIM G.m.b.H. Nov. 29, 1965 [Nov. 27, 1964], No. 50532/65. Heading F4T. In a burner having a replaceable welding or cutting insert (6, 13, 7) connected to an oxygen supply (4) on a handle (1), a passage (12) extends from the joint faces between the insert and the nipple to either a fuel gas passage (19) or an oxygen passage so as to put the connection under suction. The joint may be sealed by either a single radial seal or by two radial seals (8, 9) and in the latter case the passage (12) extends from the annular chamber (11) between the seals. The replaceable insert comprises a pipe (7) leading to the burner nozzle and soldered to a mixing nozzle (13) screwed to an injector nozzle (6).
Patent GB-1205850-A (GB)
Title: Improvements in or relating to suspension springs and suspension systems for vehicles
IPC: B60G11/08
Filed: 1968-10-24
Abstract: 1,205,850. Vehicle suspension. TOYOTA JIDOSHA KOGYO K.K. 24 Oct., 1968 [26 Oct., 1967], No. 50616/68. Heading B7D. [Also in Division F2] A transverse leaf spring, for use in a combination of a spring and suspension arms for a vehicle, has two locations of maximum cross-section which serve as vehicle body supporting points and a point midway between the supporting points which has a thickness less than that of the supporting points. In embodiments, springs 10, Figs. 5, 7, 9 and 11, have supporting points X, X<SP>1</SP> and have a midway point reduced in thickness. The springs may also be reduced in width as shown in Figs. 6 and 10 and may be laminated. In use, a spring 10, Fig. 1, has ends thereof attached to suspension arms 7, 7<SP>1</SP> by means of pins 11, 11<SP>1</SP> and is supported at points 12, 12<SP>1</SP> and 13, 13<SP>1</SP>.
Patent GB-1132241-A (GB)
Title: Electrical attracted armature relay
IPC: B65D43/16
Filed: 1965-12-02
Abstract: 1,132,241. Electromagnetic relays. VAPOR CORP. 2 Dec., 1965 [3 May, 1965], No. 51293/65. Heading H1N. In an electromagnetic relay the armature 46 rocks on the end 38 of a magnetic frame 34 and a flat biasing hinge spring 52 for the armature is secured to mounting blocks 40, 50 on the frame end 38 and the armature respectively. The block 40 has an oblique surface 42 which receives the spring 52 which has a width across the armature greater than its length extending longitudinally of the armature. The current setting is adjusted by means of an armature back stop screw 58 or by adjustment of the position of the block 40 on the frame end 38 (Fig. 5, not shown). An insulating member 64, secured to the armature 46, supports angle-brackets 65 with contact springs 66 riveted thereto and arranged to bridge respective pairs of fixed contacts 70 connected to U-shaped tabs 74. The member 64 also carries an indicator 76, the end 77 of which is visible through a transparent dome 78 when the armature is in its unattracted position. Normally closed or normally open contacts or any combination thereof may be provided.
Patent GB-1117900-A (GB)
Title: Improvements in or relating to air cleaning apparatus
IPC: F24F13/28
Filed: 1964-12-18
Abstract: 1,117,900. Air cleaner. D. A. G. MARSHALL. 20 Dec., 1965 [18 Dec., 1964], No. 51602/64. Heading BIT. A small, portable air cleaning unit comprises a casing 10 containing a fan 18 and two filter elements, coarse element 16 being removably located over downwardly facing inlet port 14, upstream of the fan, while fine, cylindrical element 26 is located downstream. Element 16 may be foamed polyurethane or felted or woven glass fibres and is of flat disc shape. Element 26 comprises a layer of pleated fibrous material such as paper, a supporting layer of perforated, expanded or woven metal, and active carbon, which may comprise a separate layer (Fig. 3, not shown) or be incorporated in the fibrous material. Element 26 is located in compartment 36 of the casing, which has an outlet grid (38).
Patent GB-1486639-A (GB)
Title: Iron-on inlay materials
IPC: D06N7/02
Filed: 1974-11-28
Abstract: 1486639 Iron-on inlays CARL FREUDENBERG KG 28 Nov 1974 [22 Dec 1973] 51639/74 Heading B2E [Also in Division B5] Iron-on inlay material comprises a woven, knitted or non-woven fabric carrying thermoplastic adhesive on one face, the fabric consisting at least partially of heat-shrinkable synthetic fibres which suffer a length decrease of at least 10% of the initial fibre length under the influence of heat and/or steam within the temperature range of 40C to 150C, whereby ironing the inlay material onto a suitable fabric results in a laminate which is bent or curved, the inlay material being on the inside of the curve. The fibres will not be pre-shrunk or will only be incompletely pre-shrunk, and may be polyolefine, polyamide, polyester, polyacrylonitrile, polyvinylchloride, polyvinylidene chloride, polyvinyl acetate, polyacrylate, polyurethane and mixtures of these, provided they have the shrinking property specified. The fabric may contain 2-40% of the heatshrinkable synthetic fibres. More than 50% of the fabric fibres may be non-shrinkable and these may be smooth or crimped and may be of polyamide.
Patent GB-1201029-A (GB)
Title: Improvements in and relating to reinforced hose
Inventor: OLDHAM CHARLES ALBERT EDWARD
IPC: F16L11/08
Filed: 1966-11-18
Abstract: 1,201,029. Flexible hose; flanged Joints. C. A. E. OLDHAM. 30 Oct., 1967 [18 Nov., 1966], No. 61798/66. Headings F2G and F2P. A reinforced flanged flexible hose is formed by splaying the end 3 of tubular metal braid 1, securing the said end between two rings 2 and moulding on the rings and internally and externally of the braid a covering of rubber, synthetic rubber, flexible plastics or the like, the covered rings and the splayed part providing a flange for the hose. The rings may be brazed or welded together and the braid secured to the rings by welding, brazing, soldering or by adhesive. The moulded covering enters the interstices of the braid. A metal backing washer 6 in two halves is applied to the rear face of the flange, a lip 8 extending round the edge of the flange. In a modification (Fig. 3, not shown), each ring has an annular lip at its inner periphery, the braid being nipped between the lips as the flanges are forced together.
Patent GB-1149704-A (GB)
Title: Ethylene-propylene elastomers blended with butene-1 polymers
IPC: C08L23/20
Filed: 1967-11-14
Abstract: 1,149,704. Olefin polymer compositions. MOBIL OIL CORP. 14 Nov., 1967 [27 Jan., 1967], No. 51816/67. Heading C3P. Compositions comprise polybutene-1 or a copolymer of butene-1 with not more than 20 mole per cent of another olefin, and 5 to 25 weight per cent of an ethylene/propylene elastomer. The butene may be copolymerized with ethylene, propylene, pentene-1, 4-methylpentene-1, 3-methylbutene-1 or hexene-1. The elastomer may be an atactic copolymer of ethylene and propylene, with or without a diolefin, e.g. butadiene-1,2, butadiene-1,3, isoprene, cyclopentadiene, dicyclopentadiene and substituted cyclo- and dicyclopentadienes. The compositions may be formed by direct blending or by co-precipitation. Examples describe blends of polybutene and butene/propylene copolymers with ethylene/propylene and ethylene/propylene/ dicyclopentadiene elastomers.
Patent GB-1435088-A (GB)
Title: Fixed bed coal gasification
IPC: C10J3/02
Filed: 1972-11-09
Abstract: 1435088 Fixed bed coal gasification GENERAL ELECTRIC CO 12 July 1973 [9 Nov 1972] 51834/72 Heading C5E A gas mixture containing combustible components is produced by placing a downwardly moving bed of coal having distributed relatively uniformly therethrough a plurality of refractory bodies in the form of hollow cylinders retaining structural integrity throughout the profile of temperature exposure, into gas exchange relationship with an upwardly moving gas mixture, the initial gaseous input at the bottom of the bed being steam and an oxygen-containing gas, the cavity in each refractory body being large enough to accommodate swelling of the coal and to add porosity to the bed to promote gas-coal contact, the volume ratio of refractory bodies to coal being at least 1 : 1. The refractory material may be silicon carbide, alumina, zirconia, or magnesia. Each cylinder may have an outer diameter of at least 1¢ inches, an inner diameter of at least ¥ inch and a minimum length of at least 2 inches. The refractory bodies are separated from the coal ash and recycled. Caking of the coal is prevented by the break-up of cake formations during conduct of the process, e.g. using a water-cooled stirrer. The coal feed may be run-of-mine coal or briquettes as in Specification 1,435,090 and the coal may be separated into larger pieces which can be charged into the gasifier with the refractory cylinders and the fines charged into the gasifier via an extrusion process as described in Specification 1,435,089.
Patent GB-1394802-A (GB)
Title: Process for the alkylation of aromatic hydrocarbons
IPC: C07C1/00
Filed: 1973-11-08
Abstract: 1394802 Alkylating aromatic hydrocarbons SOC ITALIANA RESINE SIR SpA 8 Nov 1973 [30 Nov 1972] 51965/73 Heading C5E Aromatic hydrocarbons are alkylated with an olefin in the presence of a complex catalyst comprising a metal halide and aromatic hydrocarbons, the activity of the catalyst being measured by determining the ratio of the dialkylated products to the trialkylated products in the complex catalyst or in the alkylation product, and fresh metal halide being added in such amounts as to maintain said ratio and leave the catalyst activity at a predetermined valve. The examples describe the preparation of ethylbenzene and polyethylbenzenes by reaction of benzene and ethylene in the presence of a complex catalyst containing AlCl 3 . The measurement of the ratio may be carried out by gasliquid chromatography.