baber/WOPTO huggingface dataset:
Patent GB-268029-A (GB)
Title: Improvements in or relating to high-frequency electrical apparatus of the type employing thermionic valves
IPC: H03B5/18
Filed: 1925-12-23
Abstract: 268,029. Brown, W. J., Burch. C. R., Robinson, E. Y., and Metropolitan- Vickers Electrical Co., Ltd. Dec. 23, 1925. Aerials; directive signalling ; thermionic generators and amplifiers. - High-frequency oscillations are generated by two valves 10, 11, Fig. 1, the electrodes of which are connected in parallel across the batteries 22, 24 and a gridbiasing resistance 23 arranged preferably at the centre of parallel and rectilinear conductors 13, 16, 20, 21. The wavelength of the generated oscillation is proportional to the length of the intervalve conductors. To increase the efficiency of radiation the valve system may be coupled to a Hertzian oscillator 25. For directive radiation the rod aerials may be arranged in parabolic formation, or as a sheet, with the valve system at the focus as shown in Fig. 2. Both valve generators, together with the radiator 25, may be enclosed in a single evacuated tube. The second valve 11 may be replaced by a " dummy " valve or by an equivalent system of coupling condensers. Instead of being straight as shown in Fig. 1, the connecting conductors 13, 16, 20, 21 may be bent into U-form, but all are kept parallel and the high and low tension feeders and also the output conductors are symmetrically arranged. The system may be used for short-wave signalling, in which case the plate supply may be alternating so as to impose a signal modulation; or it may be employed for electrotherapeutic treatment. In reception, Fig. 4, the twovalves are arranged side by side, with the connecting conductors 13, 16, 20, 21 dipping into mercury U-tubes 40 - - 43 mounted on a movable bracket 45 so that their effective length may be adjusted for tuning purposes. A rod receiving aerial 60 is coupled by a single turn to the grid leads, whilst a separate "quenching" valve oscillator 53 is adjusted to apply an alternating voltage across the anodes 12, 14 and cathodes 18, 19 at every half-cycle of the receiver oscillations, so as to ensure super-regenerative amplification. The rod oscillator 60 may be in two halves, each half being secured by a sliding metallic band to the two arms of the grid U-tube 41.
Patent GB-1080736-A (GB)
Title: Process and preparation for finishing textile materials
IPC: D06M14/08
Filed: 1964-08-10
Abstract: Textile materials are finished by activating them by means of a radical forming substance, applying thereto a vinyl phosphonic acid ester, semi-esteramide or amide, or a mixture thereof, in admixture or in solution with one or more comonomers, and grafting the monomers to the textile materials by heating them to 80-160 DEG  C. Comonomers specified for use with the vinyl phosphonic compounds are acrylic and methacrylic acids and their esters and amides, maleic acid, maleic and furmaric esters, vinyl esters, styrene, styrene sulphonic acid and formaldehydes.  Textile materials specified are those made from cotton, polyolefines, polyethylene terephthalate, a vinyidene cyanide/vinyl acetate copolymer, polyacrylonitrile and polyamides.  Activation of the textile is preferably effected by ozonization. The monomers are preferably diluted with organic solvents or water before application to the textile materials.
Patent GB-219585-A (GB)
Title: Improvements in cane crushing apparatus
IPC: C13B10/06
Filed: 1923-12-31
Abstract: 219,585. Golby, F. W., (Fulton Iron Works Co.). Dec. 31, 1923. Roller mills.-In cane-crushing apparatus with a plurality of sets of rolls whereby the cane is successively acted on, the rolls G, Figs. 1 and 2, of the first set F are of greater diameter than the rolls of the other sets. The rolls A of the second crusher are of greater diameter than the rolls B of the third crusher, and the rolls C', D<1>, E<1> of the second and succeeding juice-expressing mills are of the same size as the rolls B and the rolls C, D, E of the first juice-expressing mill. The rolls have peripheral ribs, preferably V-shaped in cross-section and overlapping, as shown in Fig. 3, the ribs 1, 2 of the second and third crushers A, B being smaller and of less pitch than the ribs 6, 1 of the first and second crushers respectively. The ribs 3 of the rolls C, D, of the first mill are. fine.r than those of the third crusher B, and the ribs 4 of the rolls C<1>, D<1>, E' of the second and succeeding mills are smaller and of less pitch than the ribs 3 of the first mill. The first crusher is driven bv a motor 10, the second and third crushers by a motor 11, the first and second mills hy a motor 12, and the remaining mills by a motor 13.
Patent GB-929119-A (GB)
Title: Improvements in coin selectors
Inventor: MARSHAL GEORGE
Filed: 1958-10-13
Abstract: 929,119. Coin-freed apparatus. BRITISH AUTOMATIC CO. Ltd. Oct. 8, 1959 [Oct. 13, 1958], No. 32651/58. Class 27. The inclined runway 9 of a coin tester for coin-freed apparatus is supported by screws 3 which are each adapted to be rotated in steps of predetermined angular dimensions to ,adjust the position of the runway. Each screw is threaded into the bottom face 8 of the runway and passes through a fixed inclined bracket 1 with a surrounding helical spring 10 forcing the runway from the bracket. The knurled heads 4 of the screws are located in their determined rotational positions by spring- loaded plungers 6 projecting from the ends of a block 5 on the bracket 1, and a locking screw 11 holds the runway in adjusted position.
Patent GB-887684-A (GB)
Title: 16-methylene steroids
Inventor: KIRK DAVID NEVILLE
Filed: 1959-09-25
Abstract: The invention comprises (1) the 3-monoacetate, the 17-monoacetate and the 3,17-diacetate of 3b  : 17a  - dihydroxy - 16 - methylenepregn - 5 - en-20-one; and (2) a process for the preparation of 17a -hydroxy- or a 17a -acyloxy-16-methylene-pregn-4-ene-3,20-dione (wherein the acyloxy group contains at most 10 carbon atoms) which comprises oxidizing with an alkaline peroxidizing agent 3b -hydroxy- or a 3b -acyloxy-16-methyl-pregna-5, 16-dien-20-one to the corresponding 3b -hydroxy-16a  : 17a -epoxide, acylating this, treating the 3b -acyloxy (wherein the acyloxy group contains at most 10 carbon atoms) compound with a source of hydrogen ions in an inert non-polar solvent to give a 3b -acyloxy-17a -hydroxy-16-methylenepregn-5-en-20-one, acylating this to give the 3b  : 17a -diacylate, preferentially hydrolysing this to give a 17a -acyloxy-3b -hydroxy-16-methylenepregn-5-en-20-one, oxidizing this, e.g. by the Oppenauer method, to give the required 17a -acyloxy compound, and, if desired, hydrolysing this to the required 17a -hydroxy compound. Examples are given.  Reference has been directed by the Comptroller to Specification 857,114.
Patent GB-653809-A (GB)
Title: Improvements in or relating to display apparatus
IPC: G09F19/16
Filed: 1947-12-12
Abstract: 653,809. Optical projection apparatus ; reflectors. HANSEL, C. W. Dec. 12, 1947, No. 32747. [Class 97 (i)] [Also in Groups XV and XVIII] Subjects freely movable on a stage 5 are seen both directly and by reflection in birds-eye view in a viewing mirror 2 after reflection in an object mirror 1, the viewing mirror being positioned at the rear of the stage and the object mirror over the stage. The stage may be formed as a screen for the reception of optical or electronic images. The mirrors 1, 2 may be fixed to or adjustably mounted in a framework or cabinet or one mirror may be on a separate stand. Opaque curtains 12 running on rails may surround the display to avoid unwanted light and lamps 25 with reflectors 26 provide any necessary illumination. The display may be optically projected on to the stage 5 which may be translucent for the purpose. This projection may be directly on to the stage or through the mirrors 1, 2 or an auxiliary mirror 11. The stage may be the screen of a television set. Blackboards 16 for instructional purposes and cupboards for apparatus, may be provided. A modification may be used to display objects and the like on shelving. Specification 585,669, [Group XVIII], is referred to.
Patent GB-458884-A (GB)
Title: Improvements relating to toe-step bearings for the driving shafts in sedimentation tanks and the like
IPC: B01D21/20
Filed: 1935-11-27
Abstract: 458,884. Footstep bearings. HARTLEY, E., 3, Dartmouth Avenue, Newcastle-under- Lyme. Nov. 27, 1935, No. 32803. [Class 12 (i)] The driving shaft 9 in sedimentation tanks and the like, is carried on a short shaft 1 fixed to the bottom of the tank. A bearing pad 5 is carried in a housing 6 bolted to the lower end of the shaft 9. Lubricant under pressure is led to the bearing through a pipe 10 from a lubricator 13 having a screwed plunger 14 and a non-return valve 18 and enters the bearing pad 5 through a duct 11. Lubricant grooves 4 are provided in the bearing portion 3 of the shaft 1. To prevent the entry of fluid in the tank and the escape of lubricant, a gland 24 is bolted to the lower part of the housing 6 and has a recess 25 forming an air lock and a recess 26 carrying a pair of U-leathers 27. A cock 22 at the upper end of the pipe 10 is closed when the lubricator 13 is being refilled.
Patent GB-1489638-A (GB)
Title: Electrical capacitor
IPC: H01G4/224
Filed: 1975-08-06
Abstract: 1489638 Capacitors PYE (ELECTRONICS PRODUCTS) Ltd 6 Aug 1975 32864/75 Heading H1M A capacitor comprises a dielectric and electrode assembly encapsulated in hardened synthetic resin, the dimensions of the unit so formed being less than the corresponding dimensions of a housing into which it is inserted. Encapsulation is preferably carried out in porous, e.g. paper or cardboard, containers 1 which are themselves impregnated by the encapsulant, which may be epoxy or polyester resin. The free space within the container may be packed with alumina to prevent the capacitor floating when the liquid encapsulant is poured in. Alternatively moulds may be used. The capacitor may be wound or stacked metallized paper or polypropylene films, or the electrodes may comprise metallized capacitively inactive films. For cylindrical capacitors, spacing 9 is preferably achieved by a diameter difference of 1 to 2 mm., and may be filled with foamed plastic. As shown, for overvoltage protection, extension of corrugation 10 an increase of internal pressure disconnects leads 16, 17 from spring clip connectors 13, 14. A discharge resistor 15 is provided between leads 16, 17.
Patent GB-984702-A (GB)
Title: Improvements in or relating to flame-resistant polyurethane plastics
IPC: C08G18/77
Filed: 1962-08-28
Abstract: Polyurethane plastics are prepared by reacting an organic polyisocyanate with an organic compound containing at least two active hydrogen containing groups, as determined by the Zerewitinoff method, in the presence of an halogen containing tall oil, one of the reactants containing chemically combined phosphorus. Many organic polyisocyanates are specified including organic, phosphorus containing polyisocyanates of the general formulae <FORM:0984702/C3/1> wherein X is oxygen or sulphur, R is O-aryl, O-substituted-aryl or O-aralkyl and R1 and R11 are R as defined above, O-alkyl, O-alkenyl, O-cycloalkyl, O-cycloalkenyl, S-alkyl, S-alkenyl, S-cycloalkyl, N-dialkyl or N-di-cycloalkyl at least one of the aryl radicals having at least one isocyanate group bonded thereto.  Monoisocyanates including phosphorus - containing monoisocyanates may additionally be used in minor amounts.  The organic compound containing at least two active hydrogen containing groups may be an alkoxylated phosphoric acid; dialkylphosphite - polycarboxylic acid - polyhydric alcohol reaction product; a polyhydric alcohol - phosphoric acid ester reaction product; polyhydric alcohol-trialkyl phosphite reaction product; hydroxyl-containing polyester; polyhydric polyalkylene ether; polyhydric polythioethers; aliphatic polyol; aliphatic thiol; polyamine; or a polyesteramide. Catalysts such as tertiary amines, molybdenum glycolate, stannous chloride, dibutyltin di-2-ethylhexoate, stannous octoate and stannous oleate; blowing agents such as added gases, hydrocarbons, halo-hydrocarbons, diethyl ether and water; emulsifiers such as sulphonated castor oil; foam stabilizers such as polydimethylsiloxane and alkylsilane polyoxyalkylene block copolymers; a pigment, and/or an inert organic solvent may be present in the reaction mixture.  The initial product may be crosslinked by reaction with an organic polyisocyanate, polyamine, polyol, or water.  The examples describe the production of flameresistant polyurethane foams. The products of the invention may be used for sound and thermal insulation, gaskets, potting electrical components, bushings, moulding the counter portion of shoes, coatings, caulks and sealants. Specifications 700,610, 769,682, 804,369 and 819,834 are referred to.
Patent GB-940883-A (GB)
Title: Improvements in or relating to wardrobes and the like
IPC: A47B43/04
Filed: 1961-09-14
Abstract: 940,883. Garment dust covers &c. F. E. BELL. Sept. 11, 1962 [Sept. 14, 1961], No. 33041/61. Heading A4X. A wardrobe comprises a tray-like top member 11 hinged to a batten 13 secured to the wall 15 of a room and supported in a horizontal position by toggle stays 16, a hanging rod 19 for garment hangers supported between opposite sides of the tray and a curtain 18 supported from the tray. The top face of member 11 which can be folded down on to the wall when the garments and curtain are removed may have a picture on its upper face.
Patent GB-332848-A (GB)
Title: Improvements in or relating to closures for vacuum-jacketed flasks
IPC: A47J41/00
Filed: 1929-10-31
Abstract: 332,848. Thermos (1925), Ltd., and Sawney, L. T. Oct. 31, 1929. Spring mechanism above closure.-Relates to closures for vacuum jacketed flasks of the type wherein a coil or other spring element is interposed between the cork and the drinking cup to hold the cork in position. According to the invention the spring element co-operates with a disc which fits loosely in the cup. In the form shown in Fig. 1 the disc a has four resilient metal tongues c pressed out therefrom which bear on the cork of a flask. In order to prevent damage to the cork the tongues c may have rounded projections e pressed thereon. In the modifications one or two discs are used conjointly with a coiled spring. The coiled spring may be attached at one end to the cork.
Patent GB-483978-A (GB)
Title: Improved means for connecting corrugated covering sheets to a metallic framework
IPC: E04D3/36
Filed: 1936-10-22
Abstract: 483,978. Wall coverings. TRIGGS. W. W. (Innocenti Soc. Anon.) Oct. 22, 1936, No. 33140 /37. Divided out of 483,335. [Class 20 (iv)] A clip for securing corrugated sheeting to a tubular metal framework is formed in two parts, one part of strip metal 22 with reversely turned ends 24, 26<1>, and the other part as a hoop 23 with extensions 32, the hoop being adapted to embrace a tubular framework member 21, and the extensions to engage recesses 30, 31 formed in the end 26<1> of the other clip part. The ends of sheeting members 5, 34 are received in the turned-over ends 24 of the clip part 22.
Patent GB-207703-A (GB)
Title: Improvements in or relating to travelling cranes
IPC: B66C17/20
Filed: 1922-12-05
Abstract: 207,703. Fitch, B. F. Dec. 5, 1922. Guiding load.-An overhead travelling crane comprises a traveller 12, 13, with two pairs of overhead sheaves 24, 25 for load ropes 22, 23 resnectively which support the load at four points situated' at the corners of a rectangle. To facilitate depositing the load in any desired position, one or both pairs of sheaves are adjustable laterally on the traveller. The apparatus is particularly suitable for handling removable vehicle bodies. As shown, the sheaves 24 rotate freely on the shaft 35 which is moved axially by a motor 40 and gearing.
Patent GB-508581-A (GB)
Title: Improvements in automatic regulating systems employing a reversible capacitor motor
IPC: G05F1/12
Filed: 1937-12-01
Abstract: 508,581. Automatic control systems; reversing of A.C. motors; electromagnetic switches. BRITISH THOMSONHOUSTON CO., Ltd. Dec. 1, 1937, No. 33221. Convention date, Dec. 1, 1936. [Class 38 (iv)] [Also in Group XXXVII] Electromotive force &c.-In an automatic regulating system employing a reversible capacitor motor 2 an anti-hunting effect is produced by means of a reversible bias derived from the phase-splitting capacitor 3 and applied to the circuit controlling means for the motor. In a system in which the motor 2 operates voltage regulating means for a circuit 1, mercury switches 4, 5 adapted to determine the direction in which the motor runs are normally held in balanced condition by an electromagnetic torque motor excited by a coil 8 responsive to the voltage of the circuit 1. A voltage in a sense depending on the direction in which the motor runs when the circuit voltage varies is derived from the capacitor and injected into the circuit supplying the coil 8 in such a way as to tend to rebalance the switch.
Patent GB-339071-A (GB)
Title: Improvements in or relating to fire bars for use in furnaces
IPC: F23H17/12
Filed: 1929-11-01
Abstract: 339,071. Jones, D., and Jones, J. H. V. Nov. 1, 1929. Firebars and grates. - In a furnace grate in which the firebars are set in close contact and air passages are provided by side grooves, the bars are so formed and arranged that adjacent lines of grooves are directed at different angles. The bars may be grooved either at one or both sides, and some ungrooved bars may be used. In the group or set of firebars shown in Fig. 2, which comprises a bar 15 without side grooves, and two side bars 11, 16, and three intermediate, bars 12, 13, 14 grooved on one side only, the grooves 21, 34 are vertical, and the grooves 35, 22 are inclined in the opposite direction to the grooves 33. The two side, bars are formed with transverse surface grooves, 19, and the intermediate bars have longitudinal grooves 25. The grooves of the individual bars may extend in different directions. When the bars are arranged transversely in the grate registering apertures 36, Fig. 4, form air channels running the length of the grate, and the grooves 39 extend from these apertures to the grate surface. A lip or flange 37 round the lower part of the aperture extends into a corresponding recess on the next bar. When the bars are grooved on both sides the grooves or their surface ends 40, 41 may he staggered on the two sides, and the bars can then be arranged with the grooves or their surface ends in adjacent faces either in or out of register, as shown in Figs. 9 and 8 respectively.
Patent GB-790630-A (GB)
Title: Waste disposal apparatus
IPC: E03C1/266
Filed: 1954-11-17
Abstract: 790,630. Garbage shredders. GENERAL ELECTRIC CO. Nov. 17, 1954 [Dec. 28, 1953], No. 33319/54. Class 59 A garbage shredder for attachment to a sink drain comprises an impeller 33 driven by a reversible motor 23 and provided with diametrically-opposed members 34 which co-operate with a fixed shredding ring 40 the lower wall of which has groups I to VI, Fig. 2, of saw-tooth like cutting and abrading elements 45, which each have a short radial wall 46 and a long sloping wall 47, the sloping walls 47 of the elements of each group facing in the opposite direction from those of an immediately adjacent group and from those of a diametrically-opposite group, passages 50, formed between the rim 36 of the impeller and the elements 45, communicating between a comminution chamber 11 and a drainage chamber 29 leading to an outlet 30. The groups of elements 45 are separated by diametrically opposed walls 51, 52, each wall 51 having sloping side walls and each wall 52 having radial side walls. The upper wall of the shredding ring 40 has shredding elements 43 which are provided with sharp-edged ridges 44. Specification 708,398 is referred to. Reference has been directed by the Comptroller to Specification 719,509.
Patent GB-520425-A (GB)
Title: Improvements in or relating to refrigerating systems
IPC: F25B15/10
Filed: 1938-11-16
Abstract: 520,425. Refrigerating. ELECTROLUX, Ltd. Nov. 16, 1938, No. 33324. Convention date, Jan. 17. [Class 29] Absorption systems. - A continuous-cycle system of which the heat supply is periodically cut off is combined with a reversing system of which the generator-absorber is heated by rectification heat or other waste heat of the continuous-cycle system, the cooling of the generator-absorber being effected during the off periods of the continuous-cycle system so that continuous cooling of a cabinet &c. is provided. The continuous-cycle system comprises a generator 10, expulsion pipe 15, condenser 16, evaporator 18, gas heat exchanger 19 and absorber 13, the last being of the tank or coil type and cooled by a closed cycle heat transfer system 30, 31, 32, 33, 34. The reversing system comprises a generator-absorber 35 surrounding the expulsion pipe 15, a condenser 39, a storage vessel 41 in cabinet insulation 40, and an evaporator coil 42. The heat transfer system has a branch circuit including a coil 37 around the geperator-absorber, and a valve 44 controlled simultaneously with a switch 26 of the heating circuit of the generator by an evaporator thermostat 28. While the continuous-cycle system is in operation the valve 44 is closed and heat of absorption in vessel 13 is removed by the transfer system. Generation proceeds in the reversing system and the expelled vapour from the continuous-cycle system is rectified, while liquefied refrigerant accumulates in the storage vessel 41. When the switch 26 and valve 44 are both opened, the liquid in the heat transfer system is diverted, through the cooling coil 37 and absorption and evaporation take place in the reversing system only. Solid or liquid absorbents, such as calcium chloride, or solutions of lithium nitrate, ammonium thiocyanate or ammonium nitrate may be used in the reversing system.
Patent GB-656933-A (GB)
Title: Improvements in warp let off motions for looms for weaving
Inventor: GREEN FRED
IPC: D03D49/06
Filed: 1948-12-24
Abstract: 656,933. Warp let-off motions. DIGGLE, J. and BEILBY, G. N., (trading as VESTA PRODUCTS). Dec. 24, 1948, No. 33327. [Class 142(ii)] One or both ends of a chain, rope or like band wrapped round a warp beam ruffle in a loom are attached to the end of a rod to which spring tension may be applied by means of a toggle linkage. As shown in Fig. 1, a chain 11 wrapped round a beam ruffle 12 is pinned to the end of a rod 16 sliding in a fixed block 17. A compression spring 19 is adjustably secured to the rod at its lower end and bears against a collar 21 sliding on the rod, and a toggle linkage 22, 24 duplicated on the further side of the rod and carrying a handle 27 is interposed between the collar and the block. Depression of the handle to the position shown serves to apply pressure to the spring and tension the rod and chain. A handwheel 20 securing the spring end permits tension variation during weaving. As shown in Fig. 3, to prevent tension variaton due to any eccentricity of the beam ruffle, one end of the chain 11 is hooked to a pin 112 on the loom frame and the block 17 is pivoted on a fixed bar 30 through which the rod 16 is slidable. The links 24 connect the block 17 to a quadrant-shaped lever 171 having an adjustable rod 31 carrying a brake block 32 bearing on the underside of the ruffle. The spring 19 bears on the underside of the lever 171.