baber/WOPTO huggingface dataset:
Patent GB-723256-A (GB)
Title: Manufacture of granular vinyl polymers
IPC: C08F14/06
Filed: 1952-05-12
Abstract: Granular polymers and copolymers of vinyl chloride are produced by polymerization, in the absence of a dispersing agent, in a medium containing an organic water-miscible solvent such as methyl, ethyl or propyl alcohol, acetone or methyl acetate, together with a greater weight of water such that the medium separates into two phases at the polymerization temperature.  Up to 30 per cent of the miscible solvent may be replaced by a water-immiscible organic solvent such as butanol, amyl alcohol, cyclohexanol, methyl ethyl ketone, diethyl ketone, cyclohexanone, ethyl, propyl or butyl acetate, propionate or butyrate, benzene, toluene, methylene chloride, chloroform, carbon tetrachloride or ethyl chloride.  Copolymers may be made with vinyl formate, acetate, propionate, butyrate or benzoate and acrylic, fumaric, maleic or crotonic acids or esters.  Catalysts specified are hydrogen peroxide with sodium formaldehyde sulphoxylate with or without ferrous ammonium sulphate.  The polymerization may be carried out in the presence of plasticizers and fillers and buffer agents such as sodium acetate with acetic acid.  The examples describe the continuous addition of the monomer and hydrogen peroxide.
Patent GB-965547-A (GB)
Title: Improvements in or relating to a blast furnace or a low shaft furnace
IPC: C21B5/00
Filed: 1960-04-05
Abstract: The air blast to a blast furnace or low shaft furnace is augmented by the addition of a gas mixture including oxygen and a non-reducing gas containing carbon dioxide and water vapour, the ratio by volume of oxygen to carbon dioxide and water together lying in the range 2:1 to 6:1 and the added gas being produced by combustion of a gaseous or liquid hydrocarbon to form a product containing 300-600 mgm. of carbon per thousand standard cubic metres.  The total blast is such that the volume of gas leaving the furnace is within the range 1000-2000 standard cubic metres per ton of charge; the gas may contain carbon monoxide and carbon dioxide in a ratio within the range 4:1 to 8:1, and may be used for (a) synthesis of ammonia, (b) hydrocarbon synthesis, (c) pre-reduction of ore, (d) generation of heat by combustion of the carbon monoxide content, (e) generation of electricity by use of the gas in a gas turbine.
Patent GB-1255884-A (GB)
Title: Improvements in or relating to load equalising devices for two carrying cables of lifting winches
IPC: B66C1/10
Filed: 1970-03-13
Abstract: 1,255,884. Winches. ATLAS-MAK MASCHINENBAU G.m.b.H. 13 March, 1970 [15 March, 1969], No. 12084/70. Heading B8B. A load compensator for maintaining equal loads in the cables 21 of two winches carrying a load 22 centrally supported therebetween on a crossbar 1, comprises on the crossbar, attachment points 3, 4 for the cables and a point 5 for the load, forming an isosceles triangle whereby any tilting of the crossbar from the horizontal, causes, due to a reduced moment arm b<SP>1</SP>, a greater torque to be applied to the winch having the decreased payout. The drives for the two winches are connected together such that one winch pays out whilst the other winds in until any unequal torque between the winches is compensated for and the crossbar returns to its horizontal position.  In the embodiment of Fig. 2 (not shown) the isosceles triangle is formed by a pair of chains attached at one end to each winch cable and having their remote ends attached one to each end of the crossbar. In the embodiment of Fig. 3 (not shown) each winch drum is driven from a motor through a differential gear, the two gears being interconnected to facilitate the compensation motion between the two drums. The interconnected pinions of the two differential gears may be braked so that each winch operates independently. In the embodiment of Fig. 4 (not shown), each winch is driven by an hydraulic motor, the circuits of which are interconnected through shut-off valves so that one motor acts as a pump during unequal torque conditions between the two winches, while the valves are open.
Patent GB-352571-A (GB)
Title: Improvements in or relating to sliding windows and the like
IPC: E05F11/38
Filed: 1930-04-17
Abstract: 352,571. Sashes balanced by springs. MULLINS, F., 15, Rockboro Road, Cork, Ireland. April 17, 1930, No. 12157. [Class 20 (iii).] A vertically-sliding vehicle window, or the like, is acted on at one or both sides by a spring 6 tending to open or shut it, the movement being damped by an air piston 5b and a cylinder rigidly mounted in the frame having an air outlet 7 adjusted by means such as a screw 8 having a tapered flat 8a. The spring may be connected to the window sash &c. by means of an arm 5 screwed to the piston and provided with a bent end 5a engaging an open-ended slot 4a in the sash. The spring and air cylinder may be attached to a plate 9 countersunk in the frame. A holding device such as a spring-pressed plunger may be mounted on the sash which is adapted to engage the frame or the plate 9 and actuated for withdrawal by a cam and handle 10b.
Patent GB-437199-A (GB)
Title: Improvements relating to the manufacture of composite metal strips
IPC: C23C6/00
Filed: 1934-04-23
Abstract: 437,199. Making composite strips for bearings. ARNOLD, C., 11, Southampton Buildings, Chancery Lane, London. (Cleveland Graphite Bronze Co. ; 880, East 72nd Street, Cleveland, Ohio, U.S.A.) April 23, 1934, No. 12160. [Classes 83 (i) and 83 (ii)] Casting.-Flanges are formed on the edges of a backing strip, molten metal of relatively low melting-point is poured between the flanges and solidified by cooling, and the flanges are removed. Steel strip passes between rolls 11, 12 to form upturned flanges along the edges, then through a furnace 14 in which its temperature is raised approximately to that of the melting point of the coating metal which is allowed to flow on from a melting furnace 15, through a furnace 16 in which a non-oxidizing atmosphere is maintained and comprising a heating chamber 17 and a cooling chamber 18, beneath a water spray 20, and through rolls 19. In a modification strip 31 after flanging in rolls 32, 33, is heated by passing through a bath of molten brass &c. 37, and then passes beneath the pouring spout 38 for the coating metal and the cooling- spray 39 and between rolls 40. The strip, after removal of the flanges is rolled, drawn or otherwise sized, and is bent to the required form such as a cylindrical bearing.
Patent GB-1028558-A (GB)
Title: Servo system for controlling motor devices in magnetic video tape recording and play back and like devices
Inventor: KIHARA NOBUTOSHI
IPC: H02P23/00
Filed: 1964-03-23
Abstract: 1,028,558. Automatic speed control. SONY CORPORATION. March 23,1964, No. 12197/64. Heading G3R. [Also in Division G4]  The speed of an electric motor is controlled with respect to a reference signal by driving it from an oscillator, the frequency of which is adjusted by the combined output of three integrators, each responsive to a different frequency range, which integrate an error signal derived by switching the reference signal by means operating at a speed corresponding to that of the motor. As shown, the motor 16 drives a revolving head in a video tape machine and is synchronized with the vertical synchronizing pulses in a television signal at 1 during record and with their reproduction from a control track during play-back. In either case the pulses are passed to a multivibrator 5 and phase splitter 30 to present square waves of opposite sign to two commutator switches 39a, 39b driven by the motor. The switches are phased relative to the reference pulses such that their combined outputs comprise a square wave having positive and negative pulses of equal length when the motor speed is correct, but with longer positive or negative pulses when the speed is high or low respectively. This waveform is integrated at 42 (see Division G4) and the result used to control the conductance of a diode 64 in circuit with a capacitor 78 which modulates the frequency of oscillator 20. This has a sine wave output and, after amplification at 28 and 29, powers the motor 16, which is a synchronous machine. It is stated that the system may also be applied to the capstan motor 19, and the commutator switches may be replaced by photo-electric or electromagnetic devices.
Patent GB-315032-A (GB)
Title: An oil gas plant for welding purposes
IPC: F23D99/00
Filed: 1928-04-26
Abstract: 315,032. Burdons, Ltd., and Howden, W. H. April 26, 1928. Welding-furnaces.-Oil gas welding plant comprises a gas producer A, spaced welding burners 1, 2 and roller or like means 54, 56 carried by the burner supports so that the edges of plates, skelped strips &c. can be closed and welded immediately after being heated. Oil gas and air mixture is fed through pipes 3, 4 to the burners 1, 2 which comprise a manifold 14, a distributing chamber 15 and a removable slotted firebrick 18, the slots of which register with a row of perforations 20 in the burner casting. The burners have water casings 21 supplied from a tank 24. The upper burner is supported by ropes or chains 7 wound on a drum 9 carried by a bracket 10 on a pillar 12 which also supports the roller 54. A pivotal arm 13 supports the lower burner 2 and the roller 56, its position being controlled by a link 70.
Patent GB-1028571-A (GB)
Title: Improvements relating to pipes
Inventor: SHELLARD EDMUND SCOBLE
IPC: F16L9/08
Filed: 1962-05-18
Abstract: 1,028,571. Concrete &c. pipes. REDLAND PIPES Ltd. May 17, 1963 [May 18, 1962], No. 19256/62. Heading F2P. A pipe, e.g. of concrete &c., comprises a cylindrical barrel 1 made by moulding or casting and a socket 2 at one end of the barrel and made from a synthetic plastic material, the socket being bonded to the barrel either after or during manufacture of the barrel and the thickness thereof being small in comparison with the thickness of the barrel. The socket is made of a polyester, epoxide resin or polyvinyl chloride reinforced by glass rovings or glass cloth and includes a tapered collar 2b, Fig. 1, received in a correspondingly tapered recess in the barrel; alternatively, the socket includes a sleeve embedded in the wall of the barrel or located in a recess in the inner surface of the barrel, or the collar is forked, the inwardly directed branch being embedded in the barrel.
Patent GB-1442130-A (GB)
Title: Filter bed nozzle
IPC: B01D24/46
Filed: 1973-03-14
Abstract: 1442130 Filter bed drainage nozzle SEVERN-TRENT WATER AUTHORITY 13 June 1974 [14 March 1973] 12359/73 Heading B1D A nozzle for draining filtrate from and delivering reverse flow air and water to a sand filter bed comprises a hollow head 2 secured to a pipe 1 by a snap connection between flange 13 and groove 23, a sharp shoulder 13a and a rounded form 13b on both parts facilitating engagement but resisting the pushing of head 2 off the pipe by reverse flow pressure. Head 2 and pipe 1 are of polyethylene and provided with projections 14 and 24 which enable pipe 1 to be screwed into a false floor, or into a pipe network above, below or in the floor, by rotating the head 2. Head 2 comprises radial ribs 22 supporting rings 20 of triangular section defining gaps 21.
Patent GB-773597-A (GB)
Title: Improvements in or relating to knitted footwear
IPC: A41B11/00
Filed: 1954-04-29
Abstract: 773,597. Stockings. SYMES, E. April 4, 1955 [April 29, 1954], No. 12410/54. Class 141. [Also in Group VIII] A stocking, sock, or like knitted article of footwear has attached to it a readily removable mending thread or threads, laid against or incorporated in the fabric so as to be unobtrusive The mending thread or threads may be located within the turned welt or a seam of the stocking &c.
Patent GB-493790-A (GB)
Title: Improvements in or relating to cathode ray devices
IPC: H01J29/48
Filed: 1937-04-30
Abstract: 493,790. Cathode-ray tubes. BRITISH THOMSON-HOUSTON CO., Ltd., and RUSHFORTH, L. April 30, 1937, No. 12413. [Class 39 (i)] An electron-optical system, such as an electron gun, for cathode-ray tubes, comprises metallic electrodes insulated and spaced from one another by ceramic parts, so that the axial spacing is determined by the thickness of the insulators, whereas the relative transverse alignment of one or more electrodes is maintained solely by frictional forces set up by clamping the electrodes and insulating parts together ; in the absence of such friction the parts would not maintain the alignment of the electrodes. In one form, the tubular second anode 1 encloses a cathode 15, modulating electrode 8 and first anode 5. Insulators 4, 7, 9 support the electrode 8 and a flange 14 on the anode 5, the whole being held together by cups 2, 10 which are welded to 1 after clamping in a press with a suitable jig aligning the electrodes. The spacing of the cathode from electrode 8 may be observed through windows 11, 12, cut in the anode 1 and a groove 24 in insulator 9. A mica washer is interposed between members 2 and 4. To reduce surface leakage between the electrodes, gaps are left between them and the insulator which are so narrow that sputtered material cannot enter them. In a modification the modulating electrode is a cap surrounding the cathode. An electron microscope objective is also described, in which the first electrode is spaced from the anode by an accurately ground ceramic tube ; the cathode is made movable to vary the magnification. The gun may be assembled with insulators of unfired material, such as soapstone, which is then fired in vacuo or in a suitable neutral or reducing atmosphere, e.g. at 900‹ in hydrogen. Specification 444,633 is referred to.
Patent GB-1029038-A (GB)
Title: Ferromagnetic cobalt particles
IPC: H01F1/44
Filed: 1963-03-28
Abstract: 1,029,038. Magnetic compositions and structures. CALIFORNIA RESEARCH CORPORATION. March 28, 1963 [Jan. 4, 1963 (2)], No. 12413/63. Heading H1H. A magnetic material comprises a colloidal suspension in an inert solvent of cobalt or cobalt alloy particles each in the range of 100  to 1000  and each encapsulated in a polymeric composition, the particles being organized into chains. The suspension comprises at least 65% by weight of solvent, and the weight ratio of polymer to metal ties between 0À1 and 5. Briefly the chained-particles are prepared by the energetic decomposition of an organocobalt compound in the presence of solvent and polymer, by providing energy to cause bond scission mechanically, thermally or by E.M. radiation. The organo-cobalt compound is preferably carbonyl compounds, e.g. cobalt octacarbonyl. The solvents are preferably hydrocarbons, halohydrocarbons and ethers, and may include up to 40% of an additive solvent. The additive solvents include alcohols, esters, ketones, amides, ethers (thio analogs of these), nitriles and sulphones. Both addition polymers and condensation polymers are suitable as the " encapsulating " polymers. For the former suitable monomers are polarmodified hydrocarbons; acrylics, vinyl and alkyl alcohols, ethers and esters; vinyl halides including haloprenes; vinyl amides and amines; vinyl cyanides, e.g. acrylonitrile; vinyl derivatives of inorganic acids; vinyl heterocycles; hetero-substituted styrenes. For the latter monomers having 1 to 2 functional groups are preferred, and numerous examples are specified. In preparation the components may be put into a flask together and heated, or alternatively the polymer and solvent may be premixed before adding the organo-metal compound. Heating may be between - 50 C. and 250 C. for times up to 60 hours and in an inert or oxygen deficient atmosphere. In one example 20 gm. of cobalt carbonyl, 3À4 gm. of a methyl methacrylate: ethylacrylate: vinyl pyrrolidone (37:69:1) polymer were introduced into a flask with toluene and refluxed. The resulting black dispersion was inspected with an electronmiscroscope (Fig. 1, not shown). Other examples disclose a number of polymers, solvents and additives. The possibility of replacing the polymer with another polymer after formation is also disclosed. The material may be used in permanent magnets and magnetic recording media. In the preparation of a magnetic recording tape, the cobalt material is mixed with an organic binder spread on a base and dried. The base may be a polyester resin, and the binder may be vinylidene chloride; acrylonitrile copolymer, or a dissocyane: vinylidene: vinyl acetate polymer.
Patent GB-353500-A (GB)
Title: Improvements relating to means for pouring liquids into vessels
IPC: B67D3/00
Filed: 1930-04-22
Abstract: 353,500. Indicating liquid level. BRITANNIA BATTERIES, Ltd., 233, Shaftesbury Avenue, London. April 22, 1930, No. 12417. Convention date, Dec. 5, 1929. Addition to 352,475, [Group XVII]. [Class 123 (i).] Relates to apparatus for filling electrical accu mulator batteries &c. of the type described in the parent Specification and is differentiated therefrom in that the outlet pipe g opens into the upper part of the ascending tube f. The flow of liquid is controlled by a cock a, and when the liquid rises above the holes p in the accumulator it ascends the tube f and is visible at h. In a modification an overflow pipe is connected to the upper part of the tube f leading to a vessel at a lower level.
Patent GB-159436-A (GB)
Title: Improvements in and relating to electrical time-keeping mechanism
IPC: G04C3/04
Filed: 1920-05-05
Abstract: 159,436. Jamin, C. D. J. May 5, 1920. Electric clocks.-A lever 6 urged by a spring 5 gives an impulse to a balance 13 and an electromagnet 1, put in circuit by the balance, re-sets the lever, the armature 3 being in the lever arbor 4. The lever, having a rest tooth 7 as well as an impulse tooth 8, is alternately held up and set free by the operation of a detent 19 which is provided with two passing springs 20, 21 the former in the path of the rest tooth and the latter in the path of the discharging-pallet 14 of the balance. With a wiper and fingers the electromagnet is twice put in circuit for each impulse, and to suppress the useless passage of current the device shown in Fig. 5 is subtituted. The end of a lever which is oscillated against two tangential terminals 37, 38 bears two separate conducting facets 35, 36, one of which in one position cuts the electromagnet out.
Patent GB-127452-A (GB)
Title: Improvements in and relating to Air Pumps.
Inventor: JONES ARTHUR EDWARD
IPC: F04B39/00
Filed: 1918-07-31
Abstract: 127,452. Jones, A. E. July 31, 1918. Actuating pumps; valves, arrangement of.-An air-pump, specially applicable for producing pressure in the fuel tanks of engines used in aircraft. comprises a cylindrical casing a which forms a crank case and cylinder, and in which are disposed a crank, a connecting-rod h, a piston e, and a cup-leather f, the fluid being delivered through a non-return valve m. A delivery pipe k and a lubricator n are provided, and the casing has top and bottom covers j, d. According to the Provisional Specification, the crank may be driven by a propeller rotated by the passage of the aircraft through the air, or by connexion to the engine, and the circumference of the piston may have one or more flats to facilitate the passage of the air.
Patent GB-116616-A (GB)
Title: Improvements in or relating to Tool Holders for Lathes.
Inventor: HAINSWORTH FRED
IPC: B23B29/04
Filed: 1917-08-31
Abstract: 116,616. Hainsworth, F. Aug. 31, 1917. Tool - holders. - A tool-holder for lathes has a longitudinal hole 2 with a tapered portion 3 at one end, and also a rectangular recessed portion 4, for carrying a drill chuck 16 or a boring bar. which latter may be clamped by eye-bolts in the holes 34, 35. A slot formed in one side may carry a tool 23, clamped rigidly by the device 24, and wedge-piece 26. In addition, a transverse slot 5 may be provided for holding double-ended or other tools, such as are used in machining crank webs, and another slot 7 may carry a tool such as is used for trepanning rings or ball races. Instead of the drill chuck 16, a grinding-apparatus, or a tool-holder with inclined slot for right or left handed work, may be carried.
Patent GB-592556-A (GB)
Title: Improvements in or relating to radio receivers and to circuits for use therein
IPC: H04B1/30
Filed: 1945-05-18
Abstract: 592,556. Phase modulation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 18, 1945, No. 12523. Convention date, May 18, 1944. [Class 40 (v)] A demodulator for angle-modulated or amplitude-modulated waves comprises a diode rectifier, means for selecting either amplitude or angle-modulated waves, and means for applying the modulated waves to the rectifier together with a modulation-free carrier derived from the incoming wave, in such a phase relationship that the modulation signals appear in 'the output of the rectifier. Theincoming waves are reduced to a low frequency and applied to the primary of a transformer T, which is tuned to the mid-frequency of the applied waves. The pass-band of transformer T is wide enough to pass the side-bands, and the voltage across the tuned secondary is passed through a crystal filter P and neutralizing condenser Cn to a balanced discriminator 26, 27, similar to that described in Specification 580,815 to provide an automatic frequency control voltage. The filtered carrier output of the crystal P is applied to the anode of diode detector 15 through a condenser 12, which is sufficiently large to have no effect on the phase of the filtered carrier. The anode of diode 15 is also supplied with unfiltered angle-modulated waves through condenser 13 and the contact PM of switch S. Condenser 13 alters the phase of the unfiltered energy by 90 degrees and also attenuates the side-band components to give carrier-exalted reception. The audio-frequency output is taken off through filter 22, 23 and switch 801 and A.V.C. voltage is fed through filter 24, 24<1> to the prior stages. In order to demodulate amplitude-modulated waves, the unfiltered waves are fed through condenser 20, resistance 19 and the AM contact of switch S to diode 15, the combination 20, 19 being adjusted to attenuate the side-bands without affecting the phase of the waves. The carrier wave derived from crystal filter P may be amplified before being applied to diode 15. The output terminal of crystal P is connected to earth through a parallel tuned circuit 60, and to the anodes of diodes 26, 27 through compensating networks 30, 40, 41 and 50, 51, 31. The audio-frequency output of balanced discriminator 26, 27 may be taken off through switch 80<1>, when carrier exaltation is not required; and A.F.C. voltage may be derived through the filter 82, 84.
Patent GB-1205191-A (GB)
Title: Binder for thin layer chromatographic adsorbents
IPC: G01N30/93
Filed: 1969-03-11
Abstract: 1,205,191. Thin layer chromatography elements. W. R. GRACE & CO. 11 March, 1969 [21 May, 1968], No. 12647/69. Heading BIX. Thin layer chromatography plates in which the adsorbent is firmly adhered to the substrate plate of metal, plastics or preferably glass are produced by preparing a slurry of the adsorbent in an aqueous solution of sodium or potassium silicate, applying a film of the slurry to the plate, and drying the plate, first at 50-80% relative humidity for 4-8 hrs., and thereafter at room relative humidity for 2-4 hrs., both at room temperature. The adsorbent used is suitably silica gel, aluminium oxide or diatomaceous earth dispersed to a weight ratio of liquid to solids of 2-6:1 in silicate solution of 4-10‹ Be strength.