baber/WOPTO huggingface dataset:
Patent GB-889312-A (GB)
Title: Improvements in or relating to the polymerisation of olefins
IPC: C08F10/00
Filed: 1959-12-11
Abstract: Liquid polymers are prepared by polymerizing olefins containing at least 3 carbon atoms in the presence of a catalyst formed by reacting with ethylene a mixture comprising aluminium and an aluminium trihalide or an aluminium alkyl dihalide.  The said mixture may also contain magnesium, mercury or a compound which liberates mercury in the presence of the other components, and metals, or compounds thereof, which metals have activity as hydrogenation catalysts, e.g. cobalt, iron, nickel, platinum, palladium and iridium.  The metals may be present as alloys or amalgams.  The preferred aluminium trihalide is aluminium bromide. The olefin may be propylene or a butene.ALSO:Liquid polymers are prepared by polymerising olefins containing at least 3 carbon atoms in the presence of a catalyst formed by reacting, with ethylene, a mixture comprising aluminium and an aluminium trihalide or an aluminium alkyl dihalide.  The said mixture may also comprise magnesium, mercury or a compound which liberates mercury in the presence of the other components, and metals, or compounds thereof, which metals have activity as hydrogenation catalysts, e.g. cobalt, iron, nickel, platinum, palladium and iridium.  The metals may be present as alloys or amalgams.  The preferred aluminium trihalide is aluminium bromide. The olefin may be propylene or a butene.  In examples propylene is polymerized in the presence of catalysts prepared from (1) aluminium chloride and aluminium to give a product comprising 2-methylpentene-1, 2-methyl pentene-2, 3- and 4-methyl pentene-1 and 4-methyl pentene-2; and (2) aluminium bromide, aluminium, magnesium, mercury and nickel chloride to give a product comprising 2-methyl-pentene-1.
Patent GB-923671-A (GB)
Title: Improvements in pistons for internal combustion engines
Inventor: CROSS RONALD CLAUDE
IPC: F16J1/06
Filed: 1961-11-27
Abstract: 923,671. Pistons. CROSS MANUFACTURING CO. (1938) Ltd. Feb. 9, 1962 [Nov. 27, 1961], No. 42304/61. Addition to 843,248. Class 122 (1). In a piston 1 in which slap is prevented or minimized by at least one metal strut 3 having a lower coefficient of expansion than the metal of the piston and housed laterally within the piston with one end 4 passing through a hole 5 in the piston skirt to apply radial thrust against the cylinder wall 2 and the other end 10 adapted to apply pressure against the interior of the piston skirt, the effective length of the strut or each strut is adjustable. In the embodiment shown, two parallel struts 3 are arranged at right-angles to the gudgeon-pin axis x, y. The ends 4 have heads 13 that engage recesses 6 in a metal pad 7 and the ends 10 are threaded into bosses 11 in the piston skirt whereby the effective length of the struts can be adjusted and then held by locking-nuts 12. Alternatively, the ends 10 may be plain and each strut formed by two coaxial parts having right and left hand threads, respectively, and coupled together by a threaded connecting sleeve. Specifications 843,254 and 843,258 also are referred to.
Patent GB-423433-A (GB)
Abstract: 423,433. Loose covers for seats. HORSNAILL, W. 0., 71B, Bartholomew Close, London. July 26, 1933, No. 20999. [Class 52 (iv)] A loose cover a is detachably secured to a chair by loops d of resilient material hooked or otherwise secured to eyelets b in the cover.
Patent GB-1334719-A (GB)
Title: Moldable rubber composition
IPC: C08L21/00
Filed: 1971-09-13
Abstract: 1334719 Scrap rubber compositions UNION CARBIDE CORP 13 Sept 1971 [14 Sept 1970] 42519/71 Headings C3P and C3Q A rubber moulding composition comprises uncured rubber and vulcanized scrap rubber in the form of particles passing through 0-208 mm. screen openings and constituting from 1 to 50% weight of the total amount of uncured rubber and vulcanized scrap rubber. The scrap rubber particles may be produced by the process disclosed in Specification 1,334,718. In the examples scrap rubber particles of specified sizes are blended with a tire tread formulation comprising SBR rubber and carbon black, the resulting blends being vulcanized.
Patent GB-1027160-A (GB)
Title: Apparatus for controlling oxygen concentration
IPC: F24F13/28
Filed: 1963-10-30
Abstract: 1,027,160. Air conditioning. A. R. KRASBERG. Oct. 30, 1963 [Nov. 1, 1962], No. 42882/63. Heading F4V. [Also in Division A5] Apparatus responsive to the amount of oxygen in a gas to be breathed, e.g. a breathing apparatus, or apparatus for use in a room or chamber, comprises means for providing gas to be breathed, means for supplying oxygen to such means and a polarographic electrochemical cell for sensing the partial pressure of the oxygen in the gas in the first means. The sensing means controls an oxygen inlet valve to the first means. As shown, an underwater breathing apparatus comprises mouthpiece with inhaling and exhaling valves (not shown), flexible bags 18 and 20 for gas to be inhaled and exhaled respectively, canister 32 containing carbon dioxide absorbing material neutral gas tank 48, valve means 54 for allowing flow of neutral gas to bag 18 in accordance with the depth of the diver oxygen tank 46, means 16 for controlling oxygen flow and means 62 for sensing the partial oxygen pressure in canister 32. The control means 16 includes in housing 78 manually-controlled valve 80 (Fig. 5, not shown), which is permanently open to allow a predetermined amount of oxygen to flow therethrough and normally closed solenoidoperated valve 84 (Fig. 5, not shown), the operation of which depends on the sensing means. The sensing means comprises platinum and silver electrodes 64, 66 in electrolyte (e.g. KOH) and separated from the gas by oxygen permeable membrane 76. The oxygen permeates membrane 76, contacts negatively charged platinum electrode 64, is reduced to OH-ions which move to the silver electrode and form the oxide thereon. The current flowing between the electrodes is a measure of the partial oxygen pressure. The electrical signal is amplified by amplifier 112 (Fig. 3, not shown), and this controls the relay 110 urged to a closed position by spring 114. When the relay 110 is in a closed position solenoidactuated valve 84 is open to allow oxygen flow. A meter 94 in the electrical current may be strapped to diver's wrist to indicate to him the oxygen content. In use gas exhaled passes from bag 20 through canister 32 where the carbon dioxide is removed to bag 18. If the bag 18 deflates, e.g. on descent of driver, neutral gas passes from tank 48 through pressure-operated valve 54 and if the oxygen content drops valve 84 is opened to allow oxygen to enter. The diver may increase the inflow of oxygen by adjusting valve 80.
Patent GB-1030671-A (GB)
Title: Method and apparatus for producing non-woven textile fabrics
IPC: D04H1/72
Filed: 1962-11-13
Abstract: 1,030,671. Forming fibre webs. JOHNSON and JOHNSON. Nov. 13, 1962 [Nov. 13, 1961], No. 42948/62. Headings D1K,D1N and D1R. [Also in Division 85] A fibre web is laid down in the preparation of cross-laid fibre structures by apparatus which includes a horizontal conveyer with suction devices located at the extremities of the traverse of a further conveyer that deposits a web on the horizontal conveyer. Fibres stripped from a doffer 12 by a worker roll 18 are passed between smoothsurfaced nip rolls 20, 22 and taken up by an endless rubber or canvas belt 26. By adjusting the speed of the worker roll 18 relative to the doffer 12, a more isotropic or more oriented web will be produced. From the belt 26 the fibres are passed to belt 34. Both belts 26, 34 are covered with pile fabric which may be plush with a pile of 1/8 inch or more, velvet with pile of <SP>1</SP>/ 8  inch or less, pannÚ with a flattened pile, or velveteen, velour, terry, corduroy or frisÚ. Pile fibres may be cotton, wool or regenerated cellulose or such thermoplastic materials as cellulose acetate, polyamides, polyesters, or acrylics. Throughout all movements of the operative run of the belt 34, the pile elements should point upwardly and rearwardly. Although pile angles of 5 to 90 degrees are mentioned, angles of 30 to 50 degrees are preferred. The lower bight of belt 34 is reciprocated above a conveyer 46 by mechanism including a block assembly 50 caused to slide on a rod 64 by a chain 56 and linkages 51, 52, 53, 54. If the speed of the chain 56 is greater than the web delivery speed, say at a ratio of 1.2 to 1, then the web will be drafted slightly as it is laid down and improved fibre alignment is obtained. Beneath the edges of the conveyer 46, which is air-permeable, are arranged suction ducts 72, 74 with slits in their upper surfaces so that the selvedges of the cross-laid web may be held in position by suction. After formation, the web may be laminated with similar or other materials, impregnated, bonded, coated or calendered. Examples are given utilising a blend of 75% by weight 3 denier, <SP>19</SP>/ 16  inch staple nylon 66 and 25% of 1. 5 denier <SP>19</SP>/ 16  inch staple dull viscose fibres which is given a 1.1:1 compaction between doffer and worker roll and laid on a horizontal conveyer with a 10% draft. The web so formed is then laminated with two similarly-constructed fabrics, treated with a pre-binder, passed over a heated drying can and through binder-padding equipment, an oven and a calender.
Patent GB-927907-A (GB)
Title: Impedance gate
IPC: H03K17/82
Filed: 1959-12-18
Abstract: 927,907. Inductors. FORD MOTOR CO. Dec. 18, 1959 [Dec. 19, 1958], No. 43035/59. Class 38 (2). [Also in Group XXXIX] The impedance of winding 13 linking a block 10 of preferably non-square loop magnetic material is altered from a high to a low value by varying the current passing through control winding 14 from a level which maintains the magnetic material surrounding winding 14 at, or near, a zero flux state to a level at which a high and preferably saturated flux level is produced. The Specification states that in the latter condition a current pulse in winding 13 will produce coupling with winding 15 which is perpendicular to winding 13, and winding 13 will then exhibit a low impedance. Winding 15 may be short-circuited by conductor 16 direct as shown, or through a rectifier (Fig. 4, not shown), or a small resistor may be inserted in 16. The control current in winding 14 may be direct or alternating or pulse current. The device may be used to control the coupling of pulses from a pulse source to a group of magnetic memory units. Specification 927,906 is referred to.
Patent GB-1178030-A (GB)
Title: Floor Treating Apparatus
Inventor: PRICE WILLIAM BROKAW
IPC: A47L11/14
Filed: 1967-09-21
Abstract: 1,178,030. Floor cleaning machines. W. B. PRICE. 21 Sept., 1967, No. 43054/67. Heading A4F. In a floor cleaning machine comprising a horizontal cylindrical brush 11, driven by an electric motor 12, a detachable disposable collector member 21, preferably of absorbent material, is mounted above and about the brush 11 to receive and retain liquid removed from the floor by the brush 11 and thrown from the latter by centrifrugal action. A spray nozzle 35 (Fig. 1, not shown) is mounted in front of the brush and collector assembly for supplying cleaning liquid to the floor from a reservoir on the handle of the machine.
Patent GB-906333-A (GB)
Title: Readily separable two-part electrical connector
IPC: H01R13/633
Filed: 1960-12-15
Abstract: 906,333. Two-part couplings. BENDIX CORPORATION. Dec. 15, 1960 [Dec. 17, 1959], No. 43250/60. Class 38 (1). In a plug and socket connector comprising insulating contact-carrying blocks 14, 22, supported in outer metal shells 19, 21, shell 19 has a plurality of radially disposed pins (not shown) receivable in angularly spaced helical grooves 37 in a sleeve 30 rotatable on shell 21 such that on rotating the handgripped disc 31 integral with sleeve 30 the connector parts are drawn together and maintained in operative engagement until a release mechanism is operated. Shell 19 has aligning grooves such as 20<SP>1</SP> for receiving ribs 27<SP>1</SP> on the shell 21, and an annular flange 32 on shell 21 forms an annular space with flanges 34, 35 on disc 31 in which space is a helical wire-spring 36, which is compressed as connector parts 10 and 11 are connected so that the pins on shell 19 are held against seats at the inner ends of grooves 37. The release mechanism is contained in a casing 39 keyed to shell 21 behind disc 31 and comprises an explosive cartridge 49 mounted in a bore 50 in an extension 54 of the casing 39 and which, when electrically ignited, causes a bellows 51 to expand to thrust a driving member 59 clockwise (as shown), which in turn rotates an abutment 60 via a spring 62. Abutment 60 engages shoulder 47 of disc 31 which is thus turned to disconnect the connector parts. Specification 832,869 is referred to.
Patent GB-923838-A (GB)
Title: Improvements in or relating to electronic telephone switching networks
IPC: H04Q3/52
Filed: 1961-12-04
Abstract: 923,838. Automatic exchange systems. M. M. ROUZIER. Dec. 4, 1961 [Dec. 30, 1960], No. 43291/61. Class 40 (4). A switching network comprises at least two switching stages each of a plurality of crosspoint matrices, means for applying connection pulses in parallel to all the outputs of the same order of the input stage as well as to all the inputs of the same order and to all the outputs of the same order of the other stages, and means for cancelling the action of the connection pulses on those inputs and outputs which correspond to cross-points which are already operated. As shown, the cross-points are PNPN diodes 14, 24 and six matrices 10, 11, 12, 20, 21, 22 each having three rows and three columns form a two-stage switching network connecting nine inputs 1101-1123 to nine outputs 1201-1223. To establish a connection between an incoming line L connected to the input 1101 and an outgoing line L<SP>1</SP> connected to the output 1201, a negative pulse is applied to terminal 1701 of amplifier 701 individually associated with connection control circuit 101, a positive and a negative pulse respectively are applied to terminals 141 and 191 of amplifier 41 and compensating amplifier 91 associated with control circuits 301, 311 and 321, and a positive and a negative pulse respectively are applied to terminals 151 and 181 of amplifier 51 and compensating amplifier 81 associated with control circuits 201, 211 and 221. Suitable choice of the values of resistors 306, 309, 206<SP>1</SP> and 209 ensures that the current passing through the established connection is substantially unaffected by the application of further connection control and compensating pulses to points 45, 95, 55 and 85 for the establishment of further connections, so that switching noises are reduced. Disconnection is effected by applying a negative pulse to terminal 1601 of disconnection amplifier 601 individually associated with control circuit 201.
Patent GB-1010990-A (GB)
Title: Air intake for a supersonic jet engine
Inventor: SCOTT GEORGE
IPC: F02C7/042
Filed: 1964-10-23
Abstract: 1,010,990. Gas turbine jet engines. ROLLS-ROYCE Ltd. Oct. 23, 1964, No. 43415/64. Headings FIG and F1J. An air intake for a supersonic jet engine comprises a cylindrical outer casing within which is mounted at least one radially extending flexible vane which divides the interior of the casing into a number of passages for the flow of ram air therethrough, there being means for bending the or each vane axially so that the shape of each passage may be varied to suit the speed of the air flow therethrough. The jet engine shown in Fig. 1 comprises an air intake passage 23 of annular form through which air flows to the compressor 22. The air intake is formed by an outer wall 24 which comprises a series of ring members 27, and by an inner wall which comprises a series of ring members 30. A series of radially disposed flexible vanes 31 extends between the ring members to form a series of air flow passages 32, the vanes being secured to the ring members at their radially inner and outer edges whereby upon relative rotation of the adjacent ring members the shape of the air flow passages may be varied, for example as shown in Figs. 9 and 10, the configuration shown in Fig. 9 being that for subsonic conditions and that in Fig. 10 that for supersonic conditions. Each vane 31 is secured to each of the ring members 27 or 30 by means of a stud 33 as shown in Fig. 3. The adjacent ring members may be connected by means of a pin and inclined slot arrangement so that relative circumferential movement of adjacent ring members causes relative axial movement thereof. The relative circumferential movement of adjacent ring members is effected by means of an actuator 36 connected to two adjacent members. Each vane may be formed by two walls which lie adjacent each other in the subsonic position but which move apart circumferentially in the supersonic position so as to form a vane of varying thickness chordwise thereof.
Patent GB-1586831-A (GB)
Title: Programmable security system and method
IPC: G07F7/12
Filed: 1977-10-19
Abstract: The apparatus is provided, for a first user, with a freely accessible first input device (31) for an identification word and with a second input device (33) for a particular keyword, which are both inaccessible to a further user. A first encoding device (37) for the identification word and the secret keyword supplies a code word which is compared with an already stored code word by means of a comparator device. If both code words are identical, the transaction can be initiated. For this purpose, the apparatus contains a third input device (39), inaccessible to the first user, for a control word of the further user, the identification word and the secret key word, together with a control word, being encodable to the stored code word in a first encoding device (37). So that there is the possibility of keeping a secret keyword of the first user secret even from the further user, the further user also at the same time uses a similar control word in order to ensure that transactions can be conducted only by him and not by other users of the system. <IMAGE>
Patent GB-1444541-A (GB)
Title: Radiation sensitive solid state devices
IPC: H01L21/00
Filed: 1972-09-22
Abstract: 1444541 Electroluminescence MULLARD Ltd 16 Aug 1973 [22 Sept 1972] 43956/72 Heading C4S [Also in Division H1] A radiation sensitive device comprises a semi-conductor layer of one conductivity type in which at least one JUGFET having laterally spaced source and drain connections is formed, the gate electrodes being disposed on the same face of the layer as one of the source and drain electrodes and connected thereto and to a common terminal via a storage capacitor on or adjacent said face. A second terminal is provided to the other of the source and drain electrodes, and the structure is such that radiation incident on it generates free charge carriers adjacent the depletion region of the gate. In the device shown in Fig. 1 (not shown) annular P type gate region (5) forms a junction with the N type layer which is an epitaxial layer on a lower resistivity P type Si substrate. The overlapping parts of region (5) and the extended drain electrode (7) and intervening insulation constitute the storage capacitor. In a modification the source region is on the opposite face of the layer where it ohmically contacts a glass supported Pt layer forming a Schottky barrier with the rest of the layer and admitting radiation to it thus enabling drain electrode (7) to fully overlap the gate region to increase the capacitance. Arrays of such device based on a common layer can be used as imaging devices to derive video signals in the manner described in Specification 1,391,934. In the two-terminal image intensifier shown in Fig. 9 FETs having a common grid-form source 47 and individual annular Schottky gates 45 of platinum are formed in a layer 41 of zinc oxide powder in a binder, the drains being formed by parts of a P type zinc telluride layer 43. In response to a light image incident on platinum layer 49 certain FETs are rendered conductive causing light emission from the Schottky barriers between electrodes 53 and layer 43. Alternatively if layer 43 is of suitable material its junction with layer 41 emits light and electrode 53 is ohmic. A variant of this, based on a N type gallium phosphide layer, has a gate of junction type and drain electrodes constituted by parts of a 200 Š thick Ag-Sn layer overlying P type drain regions which form light emitting junctions with the GaP layer which may be disposed on a translucent platinum layer for rear illumination or epitaxially grown on a P type GaAs or GaP substrate for front illumination. Devices having capacitors constituted by PN or heterojunctions or Schottky barriers are also possible. Specifications 1,444,543 and 1,444,544 are referred to.
Patent GB-1078058-A (GB)
Title: Bicyclic ketones and preparation thereof
IPC: C07D493/04
Filed: 1964-10-28
Abstract: A process for introducing a keto group into a bicyclic, cis-linked 5-membered ring system comprises reacting a bicyclic, cis-linked 5-membered ring compound containing at least one endo secondary hydroxyl group with oxygen in the presence of at least about 5% by weight, based on the weight of the starting material, of a noble metal catalyst, e.g. Pt.  Specified starting materials are 1,4:3,6-dianhydrohexitols of formula <FORM:1078058/C2/1> Exo-hydroxyl groups are unaffected.  Examples prepare 1,4:3,6-dianhydro-D-threo-2,5-hexo-diulose and its bis-2,4-dinitrophenylhydrazone, 1,4:3,6 - dianhydro - D - fructose and its 2,4-dinitro - phenylhydrazone and 1,4:3,6 - dianhydro - L - sorbose and its 2,4 - dinitrophenylhydrazone and p-tolylsulphonylhydrazone, the sugars beig claimed per se.  1,4:3,6 - Dianhydro - L - sorbose is reduced with sodium amalgam to give 1,4:3,6-dianhydro - D - sorbitol and 1,4:3,6 - dianhydro-L-iditol.
Patent GB-1521469-A (GB)
Title: Pump and treatment of effluent
IPC: B01F25/64
Filed: 1975-10-09
Abstract: 1521469 Aerating and circulating liquids J P MORAN L J MORAN G J CONNOR S A CONNOR and D A MOCKETT 9 Oct 1975 [11 Oct 1974] 44166/74 Heading B1C An areating plant for e.g. sewage includes a submerged pump 15 having a liquid inlet through a screen 40, an air inlet pipe 17, and an outlet 18 for the air/liquid mixture terminating in a T-piece 41 of which one leg is directed towards the screen. The pump is a centrifugal pump (see Figs. 2 and 3, not shown) in which the liquid inlet terminates in a sleeve (27) surrounded by an annular chamber (26) into which air is induced by the action of the pump rotor.
Patent GB-1240200-A (GB)
Title: Improvements in or relating to a horizontal regenerative coke oven battery
IPC: C10B21/12
Filed: 1969-09-08
Abstract: 1,240,200. Horizontal coke ovens. SIMONCARVES Ltd. 8 Sept., 1969 [13 Dec., 1968], No. 44323/69. Addition to 1,212,63,1. Heading F4B. In a horizontal underjet regenerative coke oven with hairpin heating flues 18, 19 having three burners 27, 28, 29 in each flue leg, the burners are disposed in line along the flue with the lowest in the middle and are elongated as compared with associated rich gas risers (23, Fig. 4) in a direction perpendicular to the long axis of the heating wall, ports in connections 30, 31 to a pair of regenerators serving the flue being disposed parallel to, partly between and substantially beyond the burners. The connection parts 30, 31 are disposed symmetrically of the heating flue. The high burners 28, 29 are recessed in the cross-walls 17 so that their mouths are alongside the flue walls.
Patent GB-1181898-A (GB)
Title: Pressure Modulating Device for Use in Antiskid Vehicle Brake System
IPC: B60T8/32
Filed: 1967-10-04
Abstract: 1,181,898. Vehicle brake arrangements. KELSEY-HAYES CO. 4 Oct., 1967 [20 Oct., 1966], No. 45143/67. Heading B7H. [Also in Divisions F2 and H1] In an anti-skid braking system (see Division F2) a valve is controlled by interrupting the flow of fluid from the power steering return line to tank.