baber/WOPTO huggingface dataset:
Patent GB-1208922-A (GB)
Title: Improvements in and relating to the separation of olefines
Inventor: SAMPSON ROY JOHN
IPC: C07F5/00
Filed: 1968-05-06
Abstract: 1,208,922. Separating olefins. IMPERIAL CHEMICAL INDUSTRIES Ltd. 1 Aug., 1969 [6 May, 1968], No. 21385/68. Heading C5E. Olefins are separated from olefin/paraffin mixtures by reacting the mixture with a mixture of organo-boron and organo-aluminium compounds to convert at least part of the olefin to boron and aluminium alkyls, separating the resulting mixture by distillation, and liberating olefin from the residual mixture of boron and aluminium alkyls. The organo-boron and -aluminium compounds may be produced in situ, from corresponding hydrides. The olefin liberation may be achieved by heating or by contact with an excess of lower olefin. In the example, a C 8  olefin/paraffin mixture is reacted with a 95-5 mol. per cent mixture of tripropylaluminium and tripropylboron, and after distillation octenes are released from the mixed octyl boron and aluminium compounds by reaction with propylene, the resulting tripropyl boron and aluminium being re-cycled.
Patent GB-839612-A (GB)
Title: Method for the preparation of ortho-vinyltoluene
IPC: C07C5/333
Filed: 1958-07-03
Abstract: Ortho-vinyltoluene is prepared by dehydrogenating ortho-ethyltoluene over a calcium nickel phosphate catalyst at 450-750 DEG  C. and a space velocity of 0.314-10 grams per ml. of catalyst per hour and in the presence of 0.5-5 parts by weight of steam per part of orthoethyltoluene.  Commercial mixtures of ethyltoluenes containing preponderant amounts of the ortho isomer may be used.  Other inert diluents may be added such as carbon dioxide, methane and benzene. Unreacted ethyltoluene is recycled.
Patent GB-800891-A (GB)
Title: Improvements in rotary tool-heads for boring, facing and milling machines
IPC: B23B39/02
Filed: 1956-07-13
Abstract: 800,891. Rotary tool-heads. SCHIESS A.G. July 13, 1956 [July 15, 1955], No. 21664/56. Class 83 (3). A rotary tool-head for boring, facing, and milling-machines has the radial-feed-movement of a tool-slide effected by axial movement of the usual drill-spindle in the machine. A coarsethreaded member 6 is secured in the socket of the usual drill-spindle 2 and engages a nut 7 rotatable in the tool-head casing 3 and having a toothed-wheel 8 secured to one end. The wheel 8 meshes with a pinion 9 which in turn drives, through bevel gearing 10 and pinions 11, 12, a worm 14 which engages a rack on the back of the tool-slide 4. The pinion 9 may be slidably disengaged by a hand-lever 17 to allow setting of the tool-slide by a hand-gear 18, 19. The spindle 2 normally rotates at the same speed as the casing, but, on axial movement of the spindle by hand wheel 20 or automatically, the nut 7 is rotated and radial-feed of the tool-holder 16 is effected.
Patent GB-1059473-A (GB)
Title: Improvements in electric incandescent lamps
IPC: H01K1/66
Filed: 1964-05-26
Abstract: 1,059,473. Electric incandescent lamps with built-in fuses. GENERAL ELECTRIC CO. May 26, 1964 [June 20, 1963], No. 21812/64. Heading H1F. A compact electric lamp comprises a tubular envelope 1 enclosing a longitudinal coiled-coil tungsten filament 3 having a short source length (defined as the distance between the ends of the coiled part of the filament which produces most of the light emitted from the lamp) operating at a voltage of more than 60 volts per inch of source length, a filling of inert gas and iodine and lead-in conductors 5, 9 having foliated portions 5a, 8 enclosed in pinch seals 2, preferably of I-shaped cross-section, the part 5a terminating in a spud 6 engaging in the interior of one end 4 of the filament, the other end of which is connected by a straight leg part 7 of the filament to the part 8 and which is formed as a fuse.
Patent GB-294616-A (GB)
IPC: A62D1/00
Filed: 1928-07-27
Abstract: 294,616. Minimax Akt.-Ges., and Hausen, J. July 27, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Chemicals.-Receptacles for fire-extinguishing media, such as carbon-tetrachloride to which have been added media, such as ammonia compounds, designed to prevent the formation of phosgene and like injurious gases, have placed in them a moisture absorbing medium, such as dehydrated crystal hydrates, soda-lime, or carbon and silicagel, to prevent the decomposition of the carbon tetrachloride or its combination with the ammoniacal medium.
Patent GB-574099-A (GB)
Title: Improvements in sheet metal containers
IPC: B65D47/04
Filed: 1943-12-30
Abstract: 574,099. Pouring necks for sheet-metal containers. BROWN, H., and READS, Ltd. Dec. 30, 1943, No. 21829. [Classes 21 and 66] The pouring neck of a sheet-metal container 1 extends inwardly and is perforated at 4 to enable the contents to be drained completely. The neck 2 may be closed by a screw-plug, and may project outwardly to enable a plug to be capsuled round the rim 2b. A filling opening 7 which may be closed by a lever lid, may be partly surrounded by an embossed ridge 5 to fit into the recessed base of a like can so that the cans may be stacked vertically. In a modification, the neck 2 is in a depressed part of the top of the can.
Patent GB-248266-A (GB)
Title: Improvements in or relating to the stopping of leaks in radiators or the like
IPC: F01P11/00
Filed: 1925-09-02
Abstract: 248,266. Andersen, A. F. Sept. 2, 1925. Plastic compositions containing linseed, lampblack, and brown umber. - A composition for stopping leaks in the radiators &c. of automobiles consists of 25 parts by weight of linseed meal 1 part of lampblack, and, preferably, 1 part of brown umber. The composition is added to the water in the radiator and is carried by the circulation into the leaks.
Patent GB-833070-A (GB)
Title: Improvements in or relating to electronic storage tubes
IPC: H01J31/64
Filed: 1957-07-10
Abstract: 833,070. Cathode-ray storage tubes. SIEMENS & HALSKE A. G. July 10, 1957 [July 11, 1956], No. 21923/57. Class 39(1). A charge storage tube comprises two coaxial electron guns 3, 5, Fig. 1, with deflecting means 4, 6 for causing both beams to generate cones and a hollow cylindrical charge storage electrode 1, located coaxially between them. The writing beam of fast electrons impinges obliquely on the storage electrode 1, producing secondary emission, thus laying down a charge pattern, and this is scanned by a reading beam of slow electrons inpinging on 1 at right angles. To facilitate coincidence of the two scans, the beams are broadened into ribbons by defocussing electrodes 9, 10 and 7, 8 so that a short cylindrical shell is traced out on 1, the axial length of which is determined by the positions of 8 and 10. The stored original is picked up from the metallic coating 2. In a modification, the storage electrode 1, 2, Fig. 2, is placed so as to fill the half of the gap between 8 and 10 which is nearest 8. Only part of the writing beam 12 reaches 1, and the collector 13 is placed so that none of the electrons from 12 can reach it. The portion 14, of the reading beam not used to discharge 1, is collected by 13. Positive charges on 1 modify the potential in the gap and increase the number of electrons from the reading beam which reach 13, thus the collector current is controlled in conformity with the stored signal and is fed to an amplifier. Frequency compression is used to increase the signal/noise ratio by making the writing beam scan the target many times before or during one scan of the reading beam. The ratio of the number of writing scans to one reading scan need not be a whole number.
Patent GB-350785-A (GB)
Title: Improvements in or relating to grinding mills
IPC: B02C17/18
Filed: 1930-07-21
Abstract: 350,785. Ball or tube mills for grinding, crushing, &c. HARDINGE CO., Inc., 122, East 42nd Street, New York, U.S.A.-(Assignees of Hardinge, H. ; York, Pennsylvania, U.S.A.) July 21, 1930, No. 21946. Convention date, July 22, 1929. [Class 59.] In a ball mill having a conical discharge end, the pulp is strained to separate the pulverized material from the balls and oversize material which are returned to the grinding zone whilst the fines are discharged, this being effected by rotary vanes 16 carrying sieves 17 which lift the material from the bottom of the discharge chamber formed between the wall 22 and the outlet. The fines pass through the sieves and flow without obstruction to the discharge 13. The vanes are associated with troughs 26 which receive the balls and oversize materials and lead them back to the grinding zone. Grilles 18 are secured in front of the sieves 17 to protect them from damage by the balls &c. The sieves are preferably curved and arranged with the concave surfaces leading, and are set substantially parallel to the direction of flow of the material out of the mill. The wall 22 is preferably formed by a number of sector sections, and is conical with its apex towards the grinding zone. The material passes to the discharge through the central aperture 24, but if it is desired to maintain a low pulp-line additional ports 25 are provided.
Patent GB-1079642-A (GB)
Title: Rotary switch
Inventor: HEATH CLARENCE WILLANS
IPC: H01H19/64
Filed: 1964-05-28
Abstract: 1,079,642. Cam-operated switches. CARR FASTENER CO. Ltd. April 9, 1965 [May 28, 1964], No. 22122/64. Heading H2B. In a rotary switch of the kind comprising a movable contact adapted to be moved relatively to a fixed contact 9 by a rotor 7, the movable contact comprises an arm 1 formed of metal strip fixed at one end 4 and adapted to bend about that end when engaged by the rotor 7, a portion of the strip being cut and bent outwardly to form a resilient tongue 6 having a free end and capable of movement relatively to the remainder of the arm 1 so that any excess pressure transmitted by the rotor 7 to the arm 1 will be absorbed by the tongue 6 moving relatively to the arm 1. A switch may be built up from a number of units with a common operating shaft (11), each unit comprising a rotor disc and a pair of movable contacts, one on each side of the rotor, the cam surface on the rotor being such that the movable contact is moved from one fixed contact (9) to a central " off " position and to another fixed contact (12).
Patent GB-824442-A (GB)
Title: Improvements in or relating to the manufacture of pentaerythritol or derivatives thereof
Inventor: GIBB ALEXANDER RAMSAY MAUND
IPC: C07C31/24
Filed: 1957-07-12
Abstract: In the manufacture of pentaerythritol from solutions obtained after the reaction of a molar excess of formaldehyde with acetaldehyde in an aqueous alkaline medium, the mother liquor, obtained from the crystallisation of the crude pentaerythritol after concentration and removal of formaldehyde from the solution, is treated at a temperature near its normal boiling-point with a mineral acid, the acid being present in such amount as to yield a solution of 0.8-4.0 normal, until no further formaldehyde evolution takes place, the resulting hydrolysed liquor is approximately neutralized, any precipitated salts are filtered off, and the resulting clear liquid is concentrated until pentaerythritol can be crystallized from it. The resulting mother liquor from this second pentaerythritol crystallization may be evaporated to dryness and from the dry residue crude pentaerythritol monoformal may be obtained by evaporation followed by vacuum distillation or extraction with a solvent. Alternatively bicyclic pentaerythritol diformal may be isolated by re-acidifying this mother liquor and distilling with superheated steam or in vacuo.  U.S.A.  Specification 2,464,430 is referred to.
Patent GB-618265-A (GB)
Title: Improvements in and relating to filling nozzles for vacuum filling machines for use in filling bottles and like containers with liquids
IPC: B67C3/16
Filed: 1946-07-25
Abstract: 618,265. Bottling. IBBETSON, M., and IBBETSON, H. July 25, 1946, No. 22197. [Class 125 (ii)] Relates to filling nozzles for vacuum bottle-filling machines, of the kind in which a tube adapted to extend into the bottle has in its wall a liquid delivery port near its lower end, and is surrounded by a sleeve valve which in the closed position obturates the port and seats on a shoulder provided on a member engaged in the end of the tube. According to the invention, a small aperture 4 in a closure plug 3 in the end of tube 1 communicatesvia a lateral passage 20 with an aperture 19 in the tube wall, and the sleeve valve 6, when in the closed position shown, obturates the liquid port 5 and leaves a channel 18 connecting passage 20 with a suction pipe 17 within tube 1, so that air may be drawn through aperture 4 to remove any surplus liquid collecting about the end of the tube.
Patent GB-1005903-A (GB)
Title: Improvements in electrical integrating totalizer
IPC: H03M1/00
Filed: 1963-06-04
Abstract: 1,005,903. Selective signalling. W. ROTH. June 4, 1963 [June 5, 1962], No. 22239/63. Heading G4H. An integrating arrangement for producing pulses representative by their number of the time integral of a D.C. input voltage comprises an integrating circuit for producing an output increasing in one direction for one polarity of a D.C. input and in the opposite direction for an input of opposite polarity, means for supplying the input D.C. signal to be integrated to the integrating circuit through a polarity reversing switch, means for determining when the integrated output reaches predetermined values in each direction and producing an output pulse at each such instant, and means responsive to the output pulse for reversing the switch. In Fig. 1 an input signal on lines 10 and 10<SP>1</SP> passes through a reversing switch 11 to the input resistance 12 of an integrating circuit comprising a high gain amplifier 13 and a feed-back capacitor 14. The amplifier will accept input signals of either polarity and the voltage on capacitor 14 represents the integral of the input. When this voltage reaches a predetermined level, a circuit 15 produces a pulse which passes to a counter 16 and which changes over switch 11 so that capacitor 14 starts charging in the opposite direction. Circuit 15 may comprise a bridge circuit of diodes witha Zener diode across a diagonal, Figs. 3 and 4 (not shown). The switch 11 may comprise a double-pole double-throw relay, Fig. 5 (not shown), though electronic switching circuits may be used if faster switching is required In modifications for use where the input signal may change sign, Figs. 6 and 8 (not shown), a reverse signal sensor unit is connected to lines 10 and 10<SP>1</SP> and produces an output when the input changes sign; this output alters the direction of counting of the counter 16 and may also be used to change over a reversing switch similar to switch 11 and in series with it, so that capacitor 14 continues to charge in the same direction when the input changes sign.
Patent GB-1292782-A (GB)
Title: Anisotropic organosilicon polymer membrane
Inventor: BOUCHILLOUX J
IPC: C08J5/22
Filed: 1971-04-19
Abstract: 1292782 Vinylsilane polymer membranes RHONE-POULENC SA 19 April 1971 [3 March 1970] 22257/71 Heading B5B [Also in Divisions B1 B2 and C3] An anisotropic membrane comprises a vinyl di- or triorganosilane polymer which has a dense layer of 0À01-10Á thickness, and a porous layer of up to 500Á thickness wherein the pores constitute 25-80% of the total membrane volume. The membrane is made by casting a ternary solution in two solvents whose boiling points differ by at least 30 C. and a non-solvent which boils above the more volatile solvent, allowing at least a part of the more volatile solvent to evaporate, contacting the east layer with a non-solvent and finally drying the resulting membrane. By "dense layer" is meant a layer which exhibits a selective permeability to gases not more than 10% different from that of a conventionally cast film, and by "porous layer" is meant a layer exhibiting no selective gas permeability. In examples a polymer of vinyltrimethylsilane, optionally copolymerized with vinyldimethylpropylsilane, is used. Solvents specified are aromatic hydrocarbons and aliphatic halocarbons. Non-solvents specified are water, alcohols and ketones. The membranes are useful in enriching one component of gas mixtures.
Patent GB-598039-A (GB)
Title: Improvements relating to loose-leaf binders
IPC: B42F5/00
Filed: 1945-08-29
Abstract: 598,039. Loose-leaf binders. KALAMAZOO, Ltd., IMPEY, F. L., ELEY, L., CHERRY, H. A., and RENDALL, A. G. Aug. 29, 1945, No. 22287. [Class 146 (i)] Visible card indexes.-In a loose-leaf binder a dividing sheet of the kind adapted to receive leaves in stepped disposition so that part of each leaf is visible, a number of such dividing sheets being assembled in one binder, has its edge remote from the one gripped in the binder thickened so that the sheet forms a shallow traylike receptacle for the leaves. The dividing sheet, made from stiff paper, rubber, thermosetting or thermo-plastic material or fabric impregnated therewith, or the like, has its marginal portion 6 thickened and bevelled on the inside at 7, the opposite marginal portion 11 being also thickened and having notches 12 for the thongs. Holes 15 for the posts of the binder and a row of stepped conical posts 13 formed on a thin metal strip 14 and adapted to receive the leaves are provided adjacent the thickened portion 11. The sheet 3 is corrugated lengthwise to form tapered ridges 9 which merge into the flat part of the sheet at the centre, the upper and lower edges 8 of the sheet being also thickened except at a part 10 adjacent the row of holes 13, which is left plain to allow greater flexibility. Preferably a narrow flap, hinged or clipped to the sheet, and suitably notched or perforated, is adapted to overlie the posts 13. Specification 337,468, [Class 146 (i)], is referred to.
Patent GB-588151-A (GB)
Title: Improvements in and relating to coarse and fine adjusting apparatus
IPC: B64C13/30
Filed: 1944-11-13
Abstract: 588,151. Lever adjusting and locking mechanism. ARENS CONTROLS, Ltd., and HERBERT, A. T. Nov. 13, 1944, No. 22356. [Class 80 (iii)] In apparatus for effecting coarse and fine adjustments of a member, the hollow stem 8 of an adjusting lever is screw threaded at its lower end 9 to engage the two parts 4, 5, of a bearing on a fixed pin 3. The two bearing parts are interconnected on the other side of the pin 3 by a stud 6. The lower part 5 of the bearing carries an arm 11 having a pivot 12 on which is mounted bell-crank levers 13, 14. One arm of the levers 13, 14 engages a trunnion 15 on a screw threaded rod 16 mounted in the 'stem 8 and carrying a milled knob 17 and the other arm is attached by a bolt 20 to a runner 19 slidable in a slotted guide 21 pivoted at 23. The runner 19 is fixed to a flexible cable or rigid rod to be actuated. In the latter case the runner 19 may have a rectilinear movement by providing it with slots for the bolts 20. To adjust the position of the runner 19 the stem 8 is gripped by the handles 10 and is slightly unscrewed to release the grip of the bearing 4, 5, on the pin 3 and the whole lever assembly is then rocked about the latter. The bearing parts 4, 5, are then clamped to the pin 3 by screwing up stem 8 and the fine adjustment is then made by turning the rod 16 to cause the lever 13 to rock about the pivot 12.
Patent GB-978270-A (GB)
Title: Improvements relating to lawn mowers
IPC: A01D34/62
Filed: 1962-06-08
Abstract: 978,270. Lawn mowers. R. C. FARNHAM. Sept. 9, 1963 [June 8, 1962], No. 22357/62. Heading A1F. A lawn mower having a cutting cylinder C which co-operates with a ledger blade B is provided with a reciprocating cutter E for cutting long grasses which may be located in front of or to the rear of the cutting cylinder. The mower may be hand operated or powered by a motor, the cutter E being geared to the main motor drive or driven by belt and pulley or other flexible drive.
Patent GB-782744-A (GB)
Title: Improvements relating to reclining chairs
Inventor: WINICK JACK ISAAC
IPC: A47C1/035
Filed: 1954-07-30
Abstract: 782,744. Reclining chairs. RESEARCH INTERESTS, Ltd., [formerly POLLOPAS PATENTS, Ltd.]. Oct. 28, 1955 [July 30, 1954], No. 22372/54. Class 52(2) The back 2 of a chair is pivoted at 3 in the side frames and hinged at its lower end to the seat 4 the front of which is slidably supported by a transverse bar 7 or peg carried by a bell-crank 5 pivoted at its top corner to the side frame and connected by a link 8 to the seat. Rearward tilting of the back 2 rotates the bellcrank 5 and raises the seat front as it moves forwards. A leg-rest 10 may be hinged to the front of the seat and may be actuated by a pivoted arm 12 connected to the seat by a link 15 or by articulated links or a lazy-tongs linkage.
Patent GB-1575054-A (GB)
Title: Method of and apparatus for laser-beam processing of a workpiece
IPC: B23K26/04
Filed: 1977-05-27
Abstract: The invention relates to a method for the precision machining of a workpiece (3) arranged in the working zone (1) of a machining laser (2), a laser measuring beam (10) being blended into the beam path of the laser machining beam (5), and the laser beams being deflectable in two orthogonal directions by means of controlled galvanometer mirrors (7). The invention consists in the fact that the workpiece surface, the shape and size of which are known, is scanned by means of the laser measuring beam (10), and the light of the laser measuring beam (10) reflected from the workpiece surface is utilised for detecting the position of the workpiece (3) inside the working zone (1) of the machining laser (2). <IMAGE>
Patent GB-532948-A (GB)
Title: Improvements in electrical conductors
IPC: H01B7/18
Filed: 1939-08-02
Abstract: 532,948. Electric conductors. ROBINSON, W. C., and MOORE, R. W. E. Aug. 2, 1939, No. 22393. [Class 36 ] An insulated electric conductor comprises a single or stranded conductive element 1, with a sheath 2 of rubber &c. about which is applied a helical serving 3 of filaments of cellulosic materials, rayon, wool &c. with the turns in contact and laid at an angle from 35 to 70 degrees to the axis of the conductor ; the serving is applied before vulcanization &c. of the sheath 2 and indents the latter so that the finished conductor is smaller in diameter than would be the case if the wrapping were replaced by a braid covering. Over the serving is applied a binder comprising one or more strands 4 of similar material wound with spaced turns and oppositely to the helix of the serving ; the binder is laid preferably at an angle of about 60 degrees to the axis of the conductor. The assembly is impregnated with a flame-retarding composition preferably comprising a pitch of animal, vegetable or marine origin, such as stearin pitch, and a natural or artificial mineral pitch, such as asphalt, together with a little wax such as montan wax and paraffin, which also forms an enclosure 5 for the serving and binder. A coating 6 of paint, varnish &c. may then be applied and receive identifying marks 7, followed by a coating 8 of paraffin or other wax, or a waxy composition. Specification 532,947 is referred to.
Patent GB-1386727-A (GB)
Title: Polyurethanecoated fabric
IPC: D06M101/12
Filed: 1973-05-11
Abstract: 1386727 Coated fabrics BAYER AG 11 May 1973 [13 May 1972] 22516/73 Heading B2E A napped fabric woven from polyester or polyester/cotton blend has a polyurethane layer applied to the napped side thereof. The blend preferably contains at most 70% of cotton. Suitable polyesters are terephthalic acid/ethylene glycol and terephthalic acid/1, 4-cyclohexane dimethanol polyesters and corresponding copolyesters. The coated fabrics may be after-treated to provide a grain or embossed pattern, for example by treating the coated fabric in an axial spin-dryer rotating in alternate directions at from 20 to 100‹C. The fabrics can be woven in conventional rough weaves preferably atlas or twill. After coating a finish of polyurethane, silicone, polyacrylate or cellulose acetobutyrates may be applied from solvents or dispersions by brushing, spray-coating or roller-coating. The polyurethane coating may be applied by a reversal process or a two-coat process.