baber/WOPTO huggingface dataset:
Patent GB-1115334-A (GB)
Title: Readily dispersible inorganic pigments
Inventor: GANTER KARL-WERNER
IPC: G11B5/70
Filed: 1965-07-02
Abstract: A dispersible TiO2 pigment carries on its surface the reaction product of trimethylol propane and an alkylene oxide. The TiO2 may be pretreated by precipitating Al(OH)3, SiO2 or TiO2 thereon.  The TiO2 pigment may contain 0.05-2% of the surface active agent.  The alkylene oxide may be ethylene or propylene oxide.  The polyol may be treated with 1-10 moles of the alkylene oxide per mole of the polyol. The surface active product may be added to the pigment undiluted or dissolved or suspended in H2O or an organic liquid.
Patent GB-783580-A (GB)
Title: Improvements in or relating to automatic frequency control arrangements for frequency shift telegraph receivers
Inventor: HEATON-ARMSTRONG LOUIS JOHN
IPC: H04L27/16
Filed: 1955-10-04
Abstract: 783,580. Automatic frequency control systems. STANDARD TELEPHONES & CABLES, Ltd. Oct. 4, 1955, No. 28194/55. Class 38 (4). In a twinflex frequency shift telegraphy receiver (each of four frequencies indicating mark or space in each of two channels) the output circuits are used to control the frequency of a local oscillator so that the mean intermediate frequency produced is stabilized. As shown, the intermediate frequencies f<SP>1</SP>, f<SP>2</SP>, f<SP>3</SP>  or f<SP>4</SP>, after limiting, are applied to discriminators A, B<SP>1</SP>, B<SP>2</SP> having output characteristics after amplifying and limiting, as shown in Fig. 2, the Bl and B<SP>2</SP> discriminators feeding the channel B through gates 14, 15 only one or other of which is open at a time as determined by the discriminator A. The channel outputs after sharpening in shapers 13, 16 to unequal D.C. voltages, e.g.  15 and  30 volts, may be added in an adding circuit 20 to give one of four alternative values applied to vary correspondingly, through a frequency control member 19, the frequency of an oscillator 18 to one of four values which, after beating in a modulator 17 with the intermediate frequency, gives a beat frequency, e.g. 30 kc/s., which is constant but whose variations if any are detected by a discriminator 21 and applied through a control member 22 to vary the frequency of a local oscillator 4 beating with the received signals, so that the receiver mean I.F. is stabilized. In a modification four separate crystal controlled oscillators replace the units 18, 19, 20 of Fig. 1 and gate circuits controlled by the outputs of shapes 13, 16 permit one frequency only to be applied to the modulator 17.
Patent GB-604234-A (GB)
Title: Process for the manufacture of threads, and the like from polyvinyl chloride
IPC: D01F6/08
Filed: 1945-10-25
Abstract: Artificial filaments, threads, fibres, films, tubes and the like are obtained by extruding a solution of polyvinyl chloride prepared according to the method described in Specification 600,490 into an evaporative atmosphere, e.g. a current of heated air, and the so-formed filaments or films are immediately or subsequently stretched.  The polyvinyl chloride is preferably employed in a solvent mixture of carbon disulphide and acetone. The materials are stretched by passing them over a heated surface or by passing them through, for example, water, oil, air or steam at a raised temperature, and although stretching may be effected in the presence of a swelling agent it is preferably effected in the absence thereof. When appropriate, wetting agents, anti-electrifying agents, lubricants or dyes may be added to the fluid in which the materials are stretched.  The acetone present in the spinning solution may contain small quantities of water. In the examples: (1) a carbon disulphide-acetone solution of polyvinyl chloride at 70 DEG  C. is extruded into a spinning cell containing air at 125 DEG  C., and the so-formed filaments are wound up, subsequently twisted into thread and stretched in water at 95 DEG  C.; (2) the spinning solution of example 1 contains a small amount of 1.4.5.8.tetramino anthraquinone; (3) the spinning solution of example 1 contains small amounts of titanium oxide and ethanolamine alkyl naphthalene sulphonate and the filaments produced therefrom are immediately stretched in water at 95 DEG  C. and then crimped and stapled.
Patent GB-414921-A (GB)
Title: Improvements in electric skill-testing apparatus
IPC: G07F17/32
Filed: 1933-10-12
Abstract: 414,921. Coin - freed skill - testing device. FEHRE, O., 4, Weberplatz, Dresden, Germany. Oct. 12, 1933, No. 28223. Convention date, Oct. 12, 1932. [Class 27.] An electric skill-testing device comprises a metal current-carrying rod 2, Figs. 2 and 3, which is rocked by an insulated handle 3 into engagement with a contact 6 to complete the circuit of a device for delivering a coin or token or for the performance of some other function. If, in its movement, the rod 2 first touches one or other of two contacts 4, 5, such delivery or performance is prevented. Fig. 12 shows a circuit diagram of the device constructed as a coin-freed apparatus. Current is supplied from mains U, W through a transformer 33 to terminals u, w feeding the different circuits. Insertion of a coin 26 momentarily closes contacts 35, 36 and completes a circuit through contacts 45, 47, 48 and the coil of an electromagnet 37, the armature 38 of which closes a main switch 39, 43, 49. The rod 2 in its position of rest causes a spring 46 to bridge the contacts 45, 47. Current now flows through a contact 40, a switch 41, 42, 44 which is normally closed, the main switch, contacts 50, 48 which are closed by a switch member 51, and the coil 37, a lamp 52 in a shunt circuit being lit to indicate that the apparatus is in readiness for operation. Current is also supplied to the rod 2 through the contact 50 and flexible wire 53 If the operator succeeds in bringing the rod 2. into engagement with contact 6 without touching contacts 4 or 5, an electromagnet 18 is energized to cause delivery of a token 12, and a lamp 58 is lit. The switch member 51 is moved off the contacts 48, 50 to the contacts 40, 55 thereby opening the main switch. When the rod is released, the circuit is broken and the member 51 falls to the contacts 48, 50. If a contact 4 or 5 is touched, an electromagnet 56 is energized, a lamp 54 indicating this, and the switch 41, 42, 44, is opened to release the main switch, so that no further current will pass until a fresh coin is inserted. Fraud preventing.-If the rod 2 is held against the contact 6, the circuit cannot be completed since the spring 46 leaves the contact 47. Coin action, electric-connection.-The coin after passing through a coin-tester, bridges inclined rails 35, 36. The rails are arranged in V-shape and diverge at their lower ends, so that the coin drops off to a money-box, or to a storage tube for delivery to successful operators. Delivery of articles stored in piles.-The armature of the magnet 18, Fig. 7, raises a slide 13 having a slot 14 therein which receives a token 12 from a storage tube 11. When the slide is raised, the token rolls of the inclined bottom of the slot 14 to a delivery shoot 17 which leads to a tray 8. In a modification, Fig. 5, the electromagnet 18 actuates an escapement 30 which allows two tokens to pass to the tray 8 at each successful operation of the apparatus.
Patent GB-1223709-A (GB)
Title: Improvements in or relating to headboxes
IPC: D21F1/02
Filed: 1968-06-13
Abstract: 1,223,709. Headbox. BLACK CLAWSON CO. 13 June, 1968 [14 June, 1967], No. 28261/ 68. Heading D2A. A headbox for a papermaking machine comprises a chamber extending across the. machine above the forming member, a slice assembly having upper and lower lips defining the stock discharge outlet, a tube assembly including a plurality of separate and generally parallel passageways of relatively small individual cross-section compared with the total cross-sectional area open to stock flow through the chamber, positioned between said chamber and said slice assembly, means rigidly securing the passageways together to impart a beam-like structure to the tube assembly, the chamber and the slice being connected to opposite ends of the passageways, which open into the chamber and the slice assembly. This headbox may be used as a secondary headbox, supplying a second layer of stock to a wet web. The tube assembly may be formed of initially separate tubes, either secured together for at least the major portions of their lengths, or secured together, at either end of the tubes by plates, which are secured to the chamber and slice assembly, respectively. A supply header may have a wall in common with the chamber, and with the tube assembly the wall between the chamber and the header being perforated to allow flow of stock, and the header and tube assembly thereby support each other and the rest of the headbox. The tube assembly may be straight or curved. In all the embodiments described, a perforated roll is placed in the chamber adjacent to the tube inlets.
Patent GB-770783-A (GB)
Title: Improvements relating to polishing machines
Inventor: ROYCE HENRY SINCLAIR
IPC: B24B19/14
Filed: 1954-10-01
Abstract: 770,783. Polishing. MORRIS; Ltd., B. O. Aug. 26, 1955 [Oct. 1, 1954], No. 28294/54. Class 60.  A machine for polishing, buffing, light grinding &c. and particularly for polishing a motor vehicle bumber 11 comprises a polishing head 13 carried by a link 14 pivoted to a link 15 pivoted to the.machine at 12. The head 13 is driven by a belt 20 from an electric'motor 17 supported by the link 15. Adjacent the head 13 is fixed a cable 21 passing between pulley wheels 22 and over a bearing 23, the free end of the cable carrying a weight which biases the polishing head towards the pivot 12. An adjustable stop 16 is provided between the links 14, 15. The link 15 is oscillated by a piston pivotally connected to it and working in a pneumatic or hydraulic cylinder 25 pivotally connected to an adjuster 26 having a hand wheel 27, by which the initial position of the link 15 can be adjusted. The movement of the piston is preferably controlled by a cam carried by the link 15 co-operating with a cam follower in the form.of an operating member of a control valve on the machine frame 50 as to, provide controlled choking of an exhaust port of cylinder 25. The polishing means may be duplicated, the heads 13 rotating in opposite directions, the arrangement preferably being such that one head is polishing the tip of the bumper at the same time as the other head is polishing a mid portion of the bumper, so as to avoid a clash between the heads. The polishing heads may be wide enough to polish two bumpers simultaneously.
Patent GB-748792-A (GB)
Title: Improvements in or relating to use of plaster of paris forms in making metal castings
IPC: B22D21/00
Filed: 1953-10-14
Abstract: 748,792. Moulds. HEINTZ CO., J. C. Oct. 14, 1953, No. 28310/53. Class 83 (1). In a method of casting the tread-forming part of a tyre-matrix, the bottom part of the mould is formed of plaster of Paris and the top is formed by a metal cover, preferably of cast iron, which serves as a chill. The plaster of Paris mould sections 50 are formed with runners 36, 52, and two of them with sprue openings 53 connecting with the runners 52. The sections are assembled on a baseplate 75, grooves 28 coacting with an annular bar 76, and are accurately centred with the aid of a gauge 88 on arm 85 rotatable about a central column 80. As a final step in the setting-up, the gauge may be replaced by a sanding block. The chill-ring or cover 90, its inner surface coated with china clay, is then positioned on the segments, guides 91 locating it, and is clamped by C-clamps 93, the plaster of Paris sections being also thereby held in place. Plaster of Paris risers are inserted in openings 96 in the cover, openings 97 in the risers co-operating with the runners 36 so that molten metal may flow to the mould cavity 98. Plaster of Paris pouring-sprues 100 are inserted in openings 101 and co-operate with the sprue-openings 53. Metal clips are pressed into cavities 39 between adjacent mould-sections and prevent leakage of molten metal from the runners 36 to the centre of the mould. Thickened areas 102, 103, with grooves 104 around the sprues and risers, prevent cracking of the chill-ring during expansion and contraction. Aluminium alloy is poured simultaneously, at 1250‹ F., into each of the two pouring-sprues 100. The mould cavity is vented through grooves 55 in the mould sections and opening 107 in the cover. After casting, the chill-ring is removed, the plaster of Paris mould sections broken away, and the cast tyre-matrix cleaned by air blast. During its cooling, a cast iron ring is inserted in the matrix to prevent distortion while shrinking. Specification 748,818 is referred to.
Patent GB-645757-A (GB)
Title: Ignition device for oxygen piercing and cutting lances
IPC: F23D14/44
Filed: 1947-10-23
Abstract: 645,757. Perforating by fusion. SOC. L'AIR LIQUIDE, SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES G. CLAUDE. Oct. 23, 1947, No. 28385. Convention date, Aug. 2, 1946. [Class 83 (iv)] [Also in Groups XI and XXI] A device for the ignition of oxygen lances, used especially for underwater piercing and cutting of metals, concrete, rocks, &c., is fitted on the end of the lance and contains a cartridge which is ignited when the device is struck against the object to be pierced or cut, the said cartridge E being supported axially within a cylinder B containing iron shavings F, with which vent holes e, in the cartridge E communicate, and held against inward movement by a flange at its outer end, the cylinder B having vent holes b and containing a thimble C, separating the packing from the end of the lance D and having holes c permitting a slow stream of oxygen from the lance D on to the packing ; a cap A forming a firing pin being fitted over the outer end of the cylinder B.
Patent GB-1189713-A (GB)
Title: Electro-Magnetic Transducer Head.
IPC: G11B5/29
Filed: 1967-06-20
Abstract: 1,189,713. Magnetic heads. V-M CORP. 20 June, 1967 [21 June, 1966], No. 28500/67. Heading G5R. A cross-field head comprises a pair of physically separate pole tips 14, 15 and an additional pole tip 29 extending across the gap 16 and on the opposite side of the record 20, the windings 27, 28, 31 being so arranged that the field produced by winding 31 subtracts from that produced by windings 27, 28 in the region of the trailing pole tip (15 in the direction shown). This produces a rapid fall-off of the net magnetic field to produce a narrow recording zone. The polepieces 11, 12 are relatively adjustable, and the additional pole tip 29 may have flux-return poles 37, 38. A stacked head consists of alternate cores and shielding spacers cemented in slots in a housing, with the additional pole being common to the heads and adjustably screwed to the housing (Fig. 10, not shown). The winding 31 carries bias, while windings 27, 28 carry bias plus information signals. The head is primarily for video recording in longitudinal tracks on tape transported at 30ips.
Patent GB-336075-A (GB)
Title: Improved process for the manufacture and production of a material resembling reinforced glass
Filed: 1929-09-20
Abstract: 336,075. Jahnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Sept. 20, 1929. Transparent sheets. - Reinforced transparent sheets are formed by applying a soft coating of a polymerization product of a butadiene or its homologues to an open-meshed fabric of tinned iron wire, or vegetable or other fibre, and hardening the coating. The hardening process is carried out at any temperature between 70‹ and 300‹ C., no heating being required when oxygen is present. The polymerization product may be obtained by the action of sodium or other alkali metal on a mixture of equal parts of butadiene and cyclohexane, or thin films thereof treated with a sulphurizing agent, such as sulphur chloride, may be used with or without natural rubber added. Condensation products, such as those derived from oxylene or other aromatic hydrocarbon with butadiene in the presence of a condensing agent such as aluminium chloride, may also be used. The repair of broken sheets prepared as above may be effected by painting over with strong solutions of the polymerization products or by pieces of film pasted thereon. The mesh of the fabric may be 40 mm. or less.
Patent GB-651682-A (GB)
Title: Improvements in or relating to the preparation of new sulphonamide derivatives
IPC: C07C311/02
Filed: 1948-11-03
Abstract: Sulphonamides of the formula <FORM:0651682/IV (b)/1> where R is an alkyl radical of less than 5 carbon atoms, A and A1 are the same or different straight or branched chain aliphatic radicals of not more than 5 carbon atoms, and (R1)2 and (R2)2 are the same or different and may be dimethyl or diethyl radicals or form with the nitrogen atom an unsubstituted morpholine or piperidine ring, are prepared by (1) condensing a sulphonyl halide R.SO2X with a secondary amine <FORM:0651682/IV (b)/2> (2) condensing the sodium derivative of a sulphonamide R-SO2-NH-A-N(R1)2 with a dialkylamino-alkyl halide X-A1-N(R2)2; or (3) if R1 and R2 are the same, condensing a sulphonamide R.SO2.NH2 with two equivalents of a dialkylamino-alkyl halide X-A-N(R1)2 in the presence of an acid binding agent such as sodamide.  The mono-substituted sulphonamides used in method (2) can be obtained from a sulphonyl halide R.SO2X and a diamine NH2-A-N(R1)2 or from the sodium derivative of a sulphonamide R.SO2NH2 and a halide X-A-N(R1)2.  The sodium derivatives are made by treating the sulphonamide with sodamide.  Examples are given.  In the Specification as open to inspection under Sect. 91, R may be aryl and may be substituted with methyl, amino and acetylamino groups and chlorine atoms, A and A1 may be aralkyl, and R1 and R2 may form any heterocyclic ring with the nitrogen atom.  Further examples show the preparation according to method (1) of N : N - bis - (3 - diethylamino - propyl) - p - chlorbenzenesulphonamide, N : N - bis - (3 - diethylamino - propyl) - p-acetylaminobenzenesulphonamide and N : N-bis - (3 - dimethylamino - propyl) - benzenesulphonamide; according to method (2) of N : N - bis - (3 - diethylamino - propyl) - p-chlorbenzenesulphonamide N - (p - diethylaminomethyl - benzyl) - N - (3 - diethylaminopropyl) - ethanesulphonamide and N : N-bis - (3 - diethylamino - propyl) - benzenesulphonamide; and according to method (3) of N : N - bis - (3 - diethylamino - propyl) - p-toluene sulphonamide and N : N-bis-(3-diethylamino-propyl)-benzene sulphonamide.  This subject-matter does not appear in the Specification as accepted.
Patent GB-998940-A (GB)
Title: Method and apparatus for the production of curved and hardened panes of glass
IPC: C03B23/031
Filed: 1961-08-08
Abstract: <PICT:0998940/C1/1> To produce curved and hardened sheets of glass, both operations are carried out in the same working position after the glass leaves the furnace, the periphery only of the sheet being pressed by moulds fixed resiliently to rods passing through the blowing grid and the periphery of the glass sheet remaining pressed during tempering of the glass by blowing air or other fluid on to the glass sheet.  Shaper moulds 7, having slots 6 to permit the passage of suspension clamps, are fixed on rods 4 passing through the corresponding grid 1 and attached to framework 2 fixed to press 5 which allows the moulds 7 to be moved close to or away from the glass sheet G.  The glass is hardened, while still pressed by moulds 7, from blowing nozzles 8.  The grids 1 are reciprocably movable in a vertical direction actuated by a motor and reduction gear system driving a cam with a movable roller attached to the framework 2.  The peripheral moulds 7 may be of glass fabric lined metal.
Patent GB-1113013-A (GB)
Title: Improvements in or relating to static inverters
Inventor: BERLOCK MONTY DAVID
IPC: H02M7/515
Filed: 1964-07-13
Abstract: 1,113,013. Inverting. PLESSEY-UK Ltd. 3 Sept., 1965 [13 July, 1964], No. 28836/64. Heading H2F. A pulse-width varied inverter comprises a bridge of switching elements which may be gas tubes, or as shown thyristors SCR1 ... SCR4, a commutating capacitor C across the output diagonal, and commutating inductors L1, L2, the arrangement being such that with two thyristors conducting, say SCR1 and SCR4, a third is fired, say SCR2, which shuts off SCR1 and SCR3 and is then itself shut off. Subsequently the opposite pair SCR2 and SCR3 are fired to commence the opposite half cycle of the output. As shown the output is derived from a transformer T having taps to which diodes D1 ... D4 are connected. When SCR3 fires to terminate the positive conducting pulse capacitor C discharges through D1, SCR3, and L2, so that SCR1 is back biased by transformer action in T and is shut-off. Also by transformer action in L2 SCR4 is shut off, SCR3 is itself shut off by resonant voltage swing in the circuit L2, C. SCR2 and SCR3 are then fired together and subsequently are shut off by a similar commutating action on firing SCR1. In a further embodiment (Fig. 2, not shown) the output transformer is dispensed with. Resistors are included in series with the diodes, these circuits being utilized in the shutting-off action.
Patent GB-355082-A (GB)
Title: An improved clip for connecting cross-arms or other fittings to a support
IPC: E04B1/58
Filed: 1930-09-26
Abstract: 355,082. Constructional ironwork. PAINTER, L. E. and PAINTER BROS., Ltd., Mortimer Road, Hereford. Sept. 26, 1930, No. 28888. [Class 20 (ii).] A clip for connecting a cross arm or other fitting to a post or other support of channel or other angle section comprises a bolt which passes through the fitting and through a seating member which engages the other side of the post, the fitting being also clamped to the post by a tongue secured to or pressed outwards from the fitting. As shown in sectional plan in Fig. 2 a bolt C passes through a hole c in a fitting A and lies parallel to and flush with the side b<1> of a support B of L-section. The head of the bolt engages with the side f<1> of a seating member F, a flange f<2> of which engages with the side b<1> of the support B. The parts are clamped together by a nut D. The side a of the fitting rests against the side b of the post and is prevented from being outwardly displaced by a tongue a<1> pressed outwards from the fitting and engaging over the side b. The tongue a<1> may, alternatively, be bolted, riveted or screwed to the fitting. In a modification the post B<1>, Fig. 3, is of channel section and the seating member F<1> is formed with a bent up end f<3> which grips the flange b<3> of the post.