baber/WOPTO huggingface dataset:
Patent GB-874041-A (GB)
Title: A method of and apparatus for manufacturing slide fasteners and slide fasteners produced by the said method and apparatus
Inventor: GRANT HARRY BERTRAM
IPC: B29C48/13
Filed: 1958-12-03
Abstract: 874,041. Moulding sliding-clasp fasteners. LIGHTNING FASTENERS Ltd. Jan. 1, 1960 [Dec. 3, 1958], No. 38924/58. Class 87(2). A toothed strip for a sliding-clasp fastener is produced by injecting heated thermoplastic material such as nylon into registering interconnected pocketed rebates or grooves 8 formed in and around the peripheries of the adjacent faces of a pair of ratating dies, 1, 2, which rotate about relatively inclined axes, and removing the strip 16 from the dies. Nylon is injected from cylinder 13 having a heater 15 through orifice 12 into the co-operating grooves 8 and their spaced pockets 9. Dies 1, 2 rotate synchronously in the direction of arrow 7 and their peripheries converge at the injection station 5 and diverge at the stripping station 6. The injection nozzle is curved and is provided with a rib 11 engaging the grooves which prevents injection into the pockets before they reach the orifice 12. The strips may be formed with shoulders and webs, Fig. 4, (not shown) by using the dies slightly out of phase one way and then out of phase to an equal and opposite degree.
Patent GB-390522-A (GB)
IPC: C06F1/20
Abstract: 390,522. Packeting match-books. RAHE, S. E., Springfield Garden, New York, U.S.A. Oct. 6, 1931, No. 29148/32. Divided on 383,009. [Class 94 (i).] Match-books are removed from the delivery conveyer of the machine in which they are made, and are stacked on edge in a container, the thin edges of one series abutting the thick edges of the next. The match-books, which may have been made as described in Specification 383,009, arrive between jaws 104, 105 on the delivery conveyer, and a series of jaws, ten in the example shown, are opened by an abutment plate 154 to allow jaws 122, 123 to grasp the book and convey it to the container 135. Two series of jaws are used, and are oppositely turned into the positions for receiving and quitting the books by the action of cam grooves 130b on the tail-pieces 128<11> of the jaws while the latter are reciprocated on slides 125 between the conveyer and the container. Each jaw 122 co-operates with a movable part 123, Fig. 5, resiliently held in an open or closed position by a spring toggle device 128 .. 132. Opening and closing are effected at the appropriate times by the action of abutments 133, 134 on the parts 128<1> of the jaws 123. The books are retained in the container by a detent 153 and an arm 145 is oscillated to pass them to the right beneath a plate 152, a movable abutment 149 controlling the forward end of the assembly.
Patent GB-1022590-A (GB)
Title: Pigment preparation
Inventor: MABBS FRANK EDWARD
IPC: C22B34/12
Filed: 1963-10-04
Abstract: Titanium dioxide pigment is produced by dissolving TiO2 in sulphuric acid; heating the resulting solution until precipitation of titanyl sulphate begins, thereafter adding aqueous H2SO4; separating precipitated titanyl sulphate from the mother liquor and redissolving it in an aqueous liquid; hydrolysing the titanyl sulphate in solution and recovering and calcining the hydrous TiO2 thus produced. For instance, TiO2 is slurried with a limited amount of water, e.g. 1/3 to 1/6 times its weight of water, and sufficient conc.  H2SO4 is added to give an H2SO4: TiO2 ratio of, e.g., 1.5 to 5.  After the TiO2 has been dissolved by heating to at least 60 DEG  C., the solution is diluted to an acid content of, e.g., 550 to 750 g./l. and filtered.  Titanyl sulphate precipitation is initiated by heating to at least 60 DEG  C. and seeding with recycled titanyl sulphate, crystals in amount up to 10% of the TiO2 content. 40 to 60% aqueous H2SO4 is then added in amount 1/10 to 4 times the volume of the mixture and the resulting mixture is kept at 20 DEG  to 120 DEG  C. for 4 to 6 hours, where-upon the titanyl sulphate is separated from the liquor and washed, e.g. with acetone or 50% H2SO4, followed by 10% H2SO4.  The crystal are dissolved in water and the solution may be filtered prior to adjustment of the H2SO4: TiO2 ratio to 1.5 to 2.5 by addition of H2SO4, if desired.  Zn may be added to reduce a small amount of the Ti4+ to Ti3+ and the solution concentrated at low temperature under sub-atmospheric pressure to yield a TiO2 concentration of 150 to 375 g./l.  Anatase or rutile inducing nuclei are added and the solution heated to at least 70 DEG  C. until precipitation of hydrous TiO2 is complete.  Dilution of the solution and reheating may be carried out.  The TiO2 is recovered and washed before precalcination addition of, e.g., a source of Zn, Sb or Sn, or an alkali metal sulphate and/or of phosphate ions.  After calcination at 700 DEG  to 1100 DEG  C., the TiO2 may be further treated, e.g. by wet or dry milling, hydroclassification and coating with hydrous metal oxides.
Patent GB-1086516-A (GB)
Title: Improvements in or relating to suspenders
IPC: A41F11/04
Filed: 1964-09-25
Abstract: 1,086,516. Garment suspenders. A. DIETZIKER. Sept. 25, 1964, No. 39202/64. Heading E2B. A suspender fastener comprises a flexible plastics apertured flat member 1 acting as an outer member and a plane plate 9 disposed In the flat member and adapted to co-act therewith as an inner member, the arrangement being such that the inner and outer members can be detachablyjoined and brought into the same plane by pressing them into each other, in which position a garment may oe clampedly engaged and fixedly located between said members. The flat member 1. comprises an eyelet 2 and legs 5, 6, 7, the two outer legs  being joined to form an aperture 8. The plate may be integral with the end of the leg 7 or may be welded thereto. The interior edge 11 of the aperture is tapered to fit a tapered groove on the circumferential side of the clamping plate (Fig. 4). When the fastener is applied to a garment the leg 7 is positioned on the opposite side of the garment to the legs 5, 6.
Patent GB-1215780-A (GB)
Title: Improvements relating to hydraulic lift installations
IPC: F15B21/045
Filed: 1969-08-05
Abstract: 1,215,780. Automatic temperature and viscosity control systems. DOVER CORP. Aug.5, 1969 [Aug. 16, 1968], No.39214/69. Heading G3R. To stabilize the operation of a hydraulic lift system, the viscosity of oil is maintained between limits by arranging for the temperature to be  maintained between determined values by mechanical work provided by a pump 12, 16.  In an open loop hydraulic system the oil may be heated by controlling the lift to make dummy runs.  The oil temperature is detected by a thermostat 40 disposed in the bottom of a reservoir and below the determined temperature the pump motor is energized. At the determined temperature, or when a call is made to lower cab 25 necessitating reverse flow of oil to a line 15 due to repositioning of a valve 14, the pump motor is disconnected. The thermostat may also energize a timer to disconnect the motor after a determined interval to guard against failure of the contacts opening. A circuit is described, Fig.2 (not shown) to control the lift.  If a closure of thermostat 40 energizing the pump motor causes creep of the car while parked at any floor, a levelling signal is transmitted to a control circuit 30.
Patent GB-1364853-A (GB)
Title: Apparatus for limiting variation in the electrical detection sig nal in an electron microscope
IPC: H01J37/28
Filed: 1971-08-20
Abstract: 1364853 Electron microscopes PERKINELMER CORP 20 Aug 1971 [17 Sept 1970] 39278/71 Heading H1D [Also in Divisions G1 and H4] An electron microscope includes detection means for producing a signal corresponding to the flow of electrons from the specimen, and, for limiting variations in the signal due to electron beam variations, a monitor 29 producing a reference signal proportional to the electron beam current and correction means 31 for varying the magnitude of the detected signal in proportion to variations in the reference signal. The variations experienced at 10<SP>-8</SP> torr or even 10<SP>-10</SP> torr are generally caused by gas molecules at the cathode tip (e.g. field emission tip 10), enhancing or decreasing the emission. Preferably correction is achieved by producing a signal of the ratio of the detection signal and the reference signal. The microscope shown includes focusing magnets 14 producing a few Š diameter spot on specimen 16, deflection electrodes 18, 20 connected to sweep generator 22 of c.r.t. display 28, momentum analysing spectrometer 24 separating the electrons into discrete energy levels, and, scintillation detectors 26a-26e with photomultiplier tubes 27a-27e. Each detector 26a-26e may be connected to photomultiplier 27a so that the signal corresponds to all energy levels or a plurality of displays may be produced for each energy level. Monitor assembly 29 (also Figs. 3, 4, not shown) includes metal box 172, located between elements (80) (82) (Fig. 2, not shown) the box having apertures 176 and 180 of 200 and 100 Á diameter respectively, the smaller aperture causing diversion of electrons 11a to transducer 182 including scintillator 186, light pipe 188 and photomultiplier 190. Metal coil 184, preferably grounded, inhibits deflection in and astigmatism of the beam due to the voltage on the remaining assembly. Correction circuit 31 includes a ratio circuit producing a corrected signal corresponding to the ratio of detection to reference signal including log amplifiers 194, 196, subtraction circuit 198 and antilog amplifier 200. Individual c.r.t.s may also be connected to each photomultiplier 27a-27e to produce a plurality of displays corresponding to each energy level. Further, Fig. 2, microscope details are as described in U.S.A. Specification 3,191,028.
Patent GB-1164689-A (GB)
Title: Treatment of Wood
IPC: B27K3/15
Filed: 1967-08-25
Abstract: 1,164,689. Dimensionally stabilised wood. MO OCH DOMSJO A.B. 25 Aug., 1967 [26 Aug., 1966], No. 39301/67. Heading D1P. Wood is treated with 10-25% of polyalkylene glycol and 0.5-20% of glyoxal as an aqueous or organic solvent solution. The glycol may be diethylene, triethylene, dipropylene, or tripropylene glycol. The glyoxal (which effects cross-linking) may be in the form of glyoxal-sodium bisulphite or partially polymerised glyoxal. A catalyst, e.g. acetic or sulphuric acid or sodium bisulphate, may be used. The solution may also contain methyl, carboxymethyl, hydroxyethyl, methyl-hydroxyethyl, ethyl-hydroxyethyl, or ethyl-hydroxypropyl cellulose; polyvinyl alcohol; collagen; or casein. The moisture content of the wood being treated may exceed the fibre saturation point. Treatment may be by spraying or vacuum and/or pressure immersion.
Patent GB-1085375-A (GB)
Title: Metal free lubricant additives
Inventor: FORBES ERIC SIMON
IPC: C08F26/06
Filed: 1965-09-15
Abstract: A mineral or synthetic lubricating base oil contains a minor proportion of a copolymer of N-vinyl pyrrolidone and an alpha olefin having 2 to 20 carbon atoms, which has been obtained by polymerizing in the presence of a Friedal Crafts catalyst at a temperature within the range - 60 DEG  C. to + 50 DEG  C.  The copolymer is preferably present in an amount of from 0.1 to 15% by weight based in the weight of the total composition.ALSO:N-vinyl pyrrolidone is co-polymerized with an alpha olefin having from 2 to 20 carbon atoms in the presence of a Friedal Crafts catalyst and at a temperature within the range -60 DEG  C. to +50 DEG  C.  The polymerization is carried out in an inert atmosphere in the presence of a solvent.  The amount of catalyst used is normally within the range from 2.5 to 50% by wt. based on the total weight of monomers.  The proportion of N-vinyl pyrrolidone is preferably from 5 to 60% on a molar basis.
Patent GB-948254-A (GB)
Title: Improvements in or relating to flat knitting machines
Inventor: HOPKINSON JOHN CURTIS
IPC: D04B15/48
Filed: 1959-01-08
Abstract: 948,254. Knitting-machines. HOSIERY & ALLIED TRADES RESEARCH ASSOCIATION. April 7, 1960 [Jan. 8, 1959], No. 39415/58. Heading D1C. Positive yarn feeding mechanism for feeding yarns without slip to the needles of a flat bed machine comprise pairs of stepped rollers 19, 24 and 20, 25 between which yarns Y, Y1 may be selectively positioned to feed yarns at either of two speeds. This is achieved by actuation of a solenoid 46 which causes yarn guides 17, 18 to be deflected to guide the yarn between one pair of rollers whereas when the solenoid is de-energized the guide is permitted to return to an initial position whereby the yarn is guided between the rollers of the other pair. In addition solenoids 30, 31 are provided whereby at the end of each traverse of the cam carriage they are actuated to cause the top roller 24, 25 of each pair to be raised out of engagement with the yarn and lower the roller, which latter is positively driven, whereby the yarn is no longer positively fed.
Patent GB-1100600-A (GB)
Title: Fuel battery provided with porous electrodes and a method for its manufacture
IPC: H01M8/24
Filed: 1966-09-05
Abstract: 1,100,600. Making batteries. VARTA A.G. 5 Sept., 1966 [11 Sept., 1965], No. 39629/66. Heading B5A. [Also in Division H1] A battery is made by arranging a stack of spaced porous electrodes in a mould and embedding their edges in a hermetically sealing and insulating material such as a thermoplastic or thermosetting resin, by centrifugal casting. In the embodiment shown in the Figure, electrodes 4, 7, 9 and 10, separated from each other by nets 6, 8 and 11 and from end covers 3 and 14 by nets 5 and 12, are located in a cylindrical centrifugal mould 1, 2 by rods 16. Cores, not shown, which extend radially inwardly from rods 16 are located between each pair of electrodes. Liquid material is then poured into the mould and the mould spun so as to form a peripheral casing 15 in which the edges of the electrodes are embedded. Rods 16 are subsequently removed and the radial cores dissolved out so that channels are formed in the casing through which the working material can be introduced between the electrodes.
Patent GB-1298500-A (GB)
Title: Stabilized biasing arrangements for kinescopes
IPC: H04N5/18
Filed: 1970-08-18
Abstract: 1298500 D.C. restoring circuit; valve and transistor amplifying circuits RCA CORPORATION 18 Aug 1970 [25 Aug 1969] 39681/70 Headings H3T H3W and H4F A D.C. restoring circuit for a television receiver, in particular a colour television -receiver comprises clamping diodes 37, 38, 39 connected between the colour difference signal path coupling capacitors 30, 31, 32 and the tube grids. These diodes are connected via resistor 45 to a voltage source B + (e.g. 280 volts), via a diode 65 (preferably a Zener diode) to a voltage source V+ (e.g. 130 volts), and via a resistor 60 to blanking amplifier triode 61. During the line intervals the triode 61 is maintained cut-off and the potential at the junction between resistor 60 and the cathode of diode 65 is essentially at the B+ level, diodes 37-39 being reverse biased and no charge being added across capacitors 30-32. During the blanking interval, triode 61 is gated on by a positive pulse from the horizontal deflection and high voltage circuit 18, and thus diode 65 becomes forward biased with the voltage at its cathode clamped to the V + level, thus determining the maximum negative swing of the pulse applied to clamping diodes 37-39. The diodes thus conduct and capacitors 30-32 charge to a more negative level than B+. With this arrangement even if the amplitude of the positive gating pulse of blanking tube 61 varies due to line voltage variations and various loading conditions of the display tube or of the circuitry 18, it is always of a sufficient magnitude to cause diode 65 to commence forward conduction, the amplitude of the pulse applied to the D.C. restorers remaining constant and being essentially equal to the difference between B + and V+. Zener diode 65 affords protective operation for diodes 37 to 39 and triode 61 if arc-over occurs in the display tube. This protection is particularly advantageous when triode 61 is replaced by a transistor. Specification 1,220,955 is referred to.
Patent GB-926595-A (GB)
Title: Improvements in and relating to electrodialysis apparatus
IPC: B01D61/50
Filed: 1961-11-10
Abstract: 926,595. Electrodialysis apparatus. AMERICAN MACHINE & FOUNDRY CO. Nov. 10, 1961 [Nov. 28, 1960], No. 40326/61. Class 41. In an electrodialysis stack comprising ion permeable membranes interspersed by gaskets, the membranes extend beyond the gaskets and are unsecured at their edges. At least some of the membranes are anion-permeable cationimpermeable and others are cation-permeable anion-impermeable. Both the membranes and gaskets have apertures therethrough which are aligned to form at least two passages extending through the stack. Channels in the gaskets allow fluid flow between the passages and cells formed between the membranes. The stack may be used for purifying mains water. Fig. 17 shows a stack comprising electrodes 50, 51, membranes 69A, 69K defining between them concentrating and diluting cells C, D, and gaskets 61, 82 and 83. The structure of a gasket 61 is as shown in Fig. 10, alternate gaskets being inverted. Fluid enters the stack at 90, diluted and concentrated product leave at 94 and 95, and fluid streams flowing through electrode compartments leave at 91 and 97. Fig. 13 shows an alternate stack comprising electrodes 50, 51, membranes 37A, 37K, gaskets 20, 30, and membrane spacers 41. The structure of the gaskets is as shown in Figs. 2 to 5. In use, the stack is contained in a tank 80, Fig. 1, filled with fluid to be treated through a pipe 81. A diluted product discharges through a central passage formed by central apertures in the membranes and gaskets whereas a concentrated product flows through passages which surround the central passage and is discharged through a groove 48, Fig. 13, - and pipe 49. Reference is also made to a stack having alternate neutral membranes.
Patent GB-1223315-A (GB)
Title: Piperidine derivatives
Inventor: JUCKER ERNST
IPC: A61K31/54
Filed: 1968-03-11
Abstract: 1,223,315. Piperidine derivative. SANDOZ Ltd. 11 March, 1968 [19 April, 1967; 6 Dec., 1967], No. 40359/70. Divided out of 1,223,314. Heading C2C. Novel compound I is prepared by reacting 1-benzyl-4-piperidone with γ-butyrolactone in the presence of an alkali metal amide and debenzylating the resulting 1 - benzyl - 4 - hydroxy - 4 - (2-oxo-3- tetrahydrofuryl) - piperidine.
Patent GB-1192358-A (GB)
Title: Chain Holding Assembly for a Scraper Chain Conveyor Chain Tensioning Device
Inventor: SPRUCE NEIL
IPC: B65G23/44
Filed: 1966-09-09
Abstract: 1,192,358. Conveyer chain tensioners. UNDERGROUND MINING MACHINERY Ltd. 8 Sept., 1967 [9 Sept., 1966], No. 40393/66. Heading F2G. A chain holding assembly for a tensioning and de-tensioning device for a scraper chain conveyer comprises a clip 14, 15, Fig. 3, for releasably engaging a flight of the scraper chain, hook-ended chains 11, 12 operatively connected to the clip and a release means which permits freeing of the chains to relieve the tension when the assembly is loaded. The device is used to lock a point on the upper run of a conveyer chain and, after fitting a sprocket locking device, using the conveyer motor to drive through the sprocket to tension the major part of the chain until a slack portion develops in the minor part between the sprocket and the chain holding assembly. Tension is released by sliding sleeve 25 towards the end stop to free arm 23. The tension in chains 11, 12 pivots members 23, 24 apart, thereby altering the inclination of shoulders 33, 34 causing the chains to slip off these shoulders towards their free ends to release the tension. Thereafter bolts 20 are removed and plate 18 swung upwardly to separate jaws 14, 15 to release the conveyer flight. In modifications, arm 24 is identical to arm 23, sleeve 25 is connected to plate 17 by a light gauge chain and stops 26 are provided on both arms 23 and 24.
Patent GB-1320724-A (GB)
Title: Phosphoric acid reactor and method
IPC: B01J16/00
Filed: 1970-08-21
Abstract: 1320724 Agitating and circulating slurry; solid-liquid contact WHITING CORP 21 Aug 1970 [25 Aug 1969] 40440/70 Headings B1C and BIF [Also in Division Cl] An apparatus for manufacturing phosphoric acid from phosphate rock and sulphuric acid comprises a vessel 11 having a source of vacuum 34 and means 26, 27 for circulating a slurry therein as described and claimed in Specification 1199276 and is further provided with a secondary flow circuit 13 including a heater 14 and a forced circulation device 41.
Patent GB-943160-A (GB)
Title: Process for the production of substituted allyl ethers
Inventor: STEPHENSON ROBERT JAMES
IPC: C07C41/06
Filed: 1961-11-13
Abstract: Substituted allyl ethers are produced by reacting a conjugated diene with an organic compound containing a hydroxyl group in presence of a cuprous salt catalyst and acid co-catalyst.  The diene is preferably butadiene, but it may also be a hydrocarbon-, alkoxy- or halo-substituted butadiene; either or both double bonds can form part of an alicyclic ring as in vinyl-cyclopentene, -cyclohexene, -cycloheptene, or in cyclohexadiene. The hydroxyl compound may be a mono- or polyhydric alcohol, aliphatic alicyclic or aromatic; it may be substituted by halogen or it may contain ether groups; the hydroxyl compound may be a phenol (including a naphthol), which optionally may be substituted with a halogen atom or an alkoxy group. A number of cuprous salts and acid co-catalysts (including Lewis acids) are listed; a sulphonic resin in which some of the hydrogen ions are replaced by cuprous ions may be used to function as both catalyst and co-catalyst. In examples (1) n-butyl a -methallyl and crotyl ethers are obtained from n-butanol and butadiene with cuprous bromide + HBr-butadiene addition product as catalysts; (2) ethyl a -methallyl and crotyl ethers from ethanol and butadiene with cuprous bromide and HBr; (3) 2-chloroethyl a -methallyl and crotyl ethers from 2-chloroethanol and butadiene with cuprous chloride and HCl and (4) mixed partial a -methallyl and crotyl ethers were obtained from polyethylene glycol (MW200), butadiene, cuprous chloride and HCl.  In Examples (1) and (3) the method of isolating the desired products included reacting excess alcohol with boric acid.  Other specific products which may be obtained by the process of the invention are methyl crotyl and a -methallyl ethers, 1,3-propanediol dicrotyl ether, benzyl a -ethallyl ether, phenyl a -methallyl ether, butyl b -methylcrotyl ether and butyl d -chlorocrotyl ether.