baber/WOPTO huggingface dataset:
Patent GB-206837-A (GB)
Title: Improvements in circuit arrangements employing thermionic valves
IPC: H02M7/44
Filed: 1923-11-06
Abstract: 206,837. British Thomson-Houston Co., Ltd., (Assignees of Prince, D. C.). Nov. 9, 1922, [Convention date]. Vacuum apparatus, arrangements of.-With the object of minimizing valve losses in the production of alternating or oscillatory current from direct current, a pair of valves is employed with an inductance coil connected between the plates, and another between the grids, and their mid-points are connected to the common filament leads through choke coils which tend to keep constant the sum of the plate currents and the sum of the grid currents. The grids may be excited by a separate oscillator, or reaction coupling may be provided between the grid and plate coils. For producing multi-phase current. the number of valves is equal to the number of phases, and the several plates and grids are each connected to the phase windings of multi-phase transformers. Fig. 1 shows a two-valve arrangement with external grid excitation by means of any usual valve generator 12. The two valves 1. 2 have their filaments directlv connected, and their grids connected through a coil 7 coupled to the exciting-coil 13, the frequency being determined by a condenser 11 across the coil 7. The mid-point of the coil 7 is connected to the filaments through a resistance 10 and a coil 9 which tends to keep the total grid current constant. The plates of the valves 1, 2 are connected by a coil 4 coupled to the load circuit 8 and shunted by a condenser 3. The mid-point of the coil is connected to the filaments through a current-maintaining coil 5 and direct-current source 6. Owing to the action of the coils 5, 9, the plate and grid currents in each valve are substantially constant through one half cycle and zero through the other half, thus reducing internal loss to a minimum. Condensers 3, 11 take up the voltages caused by the sudden diversion of current from one valve to the other. When self-excitation of the valves 1, 2 is employed, the oscillator 12 is dispensed with, and the coils 4, 7 are coupled to each other and to the load coil 8. To secure correct phase in the grid excitation, one half only of the coil 7 is shunted by a condenser. The three-phase generator shown in Fig. 3 comprises three valves 22, 23, 24 with their plates connected to the primary coils of a three-phase transformer 27, the neutral point of which is connected to the filaments through a current-maintaining coil 25 and direct-current source 26. The secondary coils 30 of this transformer are connected in delta, and to the load circuit, which determines the frequency. The valve grids are connected through resistances to the secondary coils 36 of another transformer, the neutral point being connected through resistance 40 and coil 39 to the filaments. Correct phase adjustment of grid potentials is obtained by connecting the primary coils 34 of the grid transformer to adjustable points on the output transformer coils 30. Harmonics may be minimized by associating two or more sets of single or three-phase circuits with the transformer coils 30, 34.
Patent GB-812922-A (GB)
Title: Improvements in or relating to blood collecting and storing apparatus
IPC: A61M5/14
Filed: 1955-09-30
Abstract: 812,922. Blood transfusion appliances. FENWAL LABORATORIES Inc. Sept. 30, 1955 [Oct. 14, 1954], No. 27961/55. Class 81 (2). A blood container for use in transfusion or for storage comprises a collapsible closed bag 10, of polythene or other transparent plastic, and a filling tube 20 connected to it, this also being of thermoplastic synthetic resin. After the bag has been filled through the needle 25, the open end of the tube is closed by a knot 26, the blood remaining in the tube is squeezed into the bag and the tube is then allowed to refill from the citrated blood contained in the bag. The tube is then subdivided into sections each of about 3 inches in length, by heat sealing its walls together, to provide sealed samples of the blood, which remain attached to the bag but which can be cut off for testing &c. as required. Symbols or lettering indicating the blood group &c. 21, 13 can be impressed on the samples and the bag by heated dies and, in a modified form, the tube has a laterally projecting rib on which such indicia can be impressed.
Patent GB-319360-A (GB)
Title: Composition
IPC: C09D193/00
Filed: 1929-09-14
Abstract: 319,360. Stubner, E. C. de. Sept. 21, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Esters. - A film-forming component such as rosin, and a plasticizer, such as ricinoleic acid are simultaneously acidized, acetylated or acylated, for instance, by acetic acid. The process may be effected in the presence of a catalyst and a solvent. In examples (1) a mixture of Zanzibar copal, castor oil (plasticizer) and alcohol are treated with glacial acetic acid and heat in the presence of #-naphthalene sulphonic acid as catalyst. The non-aqueous washed product may be used as a varnish. (2) A mixture of rosin, ricinoleic acid and amyl alcohol is heated with a solution of zinc acetate. The final product is believed to contain amyl acetate, zinc resinate and acetyl-zinc ricinoleate. (3) Castor oil, rosin and zinc acetate are heated in the presence of phosphoric acid. (4) Castor oil and rosin dissolved in toluene is heated with zinc acetate solution. (5) Powdered copal is heated and dissolved in toluene and glacial acetic acid in the presence of phosphoric acid. Others resins such as kauri, congo, pontianac, dammar, shellac, &c. other alcohols such as butyl alcohol, glycols, glycerine, phenol, naphthol, &c., and other oils or waxes such as rape-seed oil, olive oil, carnauba wax, beeswax, wool wax, &c. may be treated by the process. Instead of acetic acid, other acids such as butyric or benzoic acid or their polyvalent metal salts such as those of lead, zinc, aluminium, or their anhydrides, or esters such as triacetin may be employed. The film-forming component preferably comprises an hydroxy organic acid, and the plasticizer an ester of an oxyorganic acid.
Patent GB-357764-A (GB)
Title: Improvements relating to the construction and manufacture of lids for dust-bins and the like
IPC: B65F1/16
Filed: 1930-09-19
Abstract: 357,764. Lids for dust-bins &c. SIMS & SONS, Ltd., S., SIMS, W. H., and SIMS, R. S. C., Britannia Works, New Whittington, Chesterfield, Derbyshire. Sept. 19, 1930, No. 27988. [Class 66.] An externally fitting lid for a dust-bin &c. of the kind having a separate rim or flange secured to a downwardly extending or turned over portion has the rim a made from a length of hoop iron slotted at b and bent inward at c to fit the portion f of the lid e. The lower edge of the hoop is turned over preferably internally, and the lid has an outwardly-turned lip g.
Patent GB-386058-A (GB)
Title: Improvements in and relating to means for extending the normal wheel base of an automobile vehicle
IPC: B62D21/14
Filed: 1931-10-08
Abstract: 386,058. Motor vehicles with extensible wheel base. FORD MOTOR CO., Ltd., 88, Regent Street, London.- (Assignees of Sheldrick, L. S.; 1424, River Lane, Dearborn, Michigan, U.S.A.) Oct. 8, 1931, No. 28000. Convention date, Jan. 2. [Classes 79 (ii) and 79 (iii).] Relates to a form of motor vehicle which may have a short or long wheel base according to whether the front end of the rear axle, torque tube and radius rod assembly is attached directly to the engine and gear-box unit or to an intermediate frame cross member 26, in which case the drive is conveyed through a coupling shaft 30, and comprises improvements in the means for enclosing the shaft 30, retaining the universal joint connections necessary to provide for vertical vibrational movements of an engine unit supported on transverse trunnions 16 and a front spring 17. With short wheel base, the transmission shaft 23 is directly connected to the drive shaft 24 by a universal joint 25, a universal housing 22 on the end of the torque tube being bolted to the gear casing 19. In the extended base position, the universal joint housing 22 is bolted to the crossframe member 26 whilst the universal joint member 25 is secured on the end of the coupling shaft 30. The forward end of the shaft 30 is formed with an enlarged and internally toothed extension 43 engaging with some amount of play, an externally toothed sleeve 28 secured on the end of the drive shaft 24 by the screw 29 previously used for attachment of the universal joint member 25, a spring 32 cushioning end play. Attached to the rear universal housing 22 is a hemispherical extension 38 whilst a cup-shaped housing 35 is secured to the gearbox unit 19 by the screws 36 previously used to secure the housing 22 thereto. According to the invention, each housing 38, 35 is formed with a tubular extension 40, 37 into which the ends of a sleeve 41 enclosing the coupling shaft 30 are loosely inserted, being engaged by resilient means, such as rings 39 of felt or like material which permit limited universal movements and exclude dust, water, &c. Ribs 42 may be formed on the sleeve 41 to limit endwise movements.
Patent GB-648973-A (GB)
Title: Improvements in the construction of suspended floors and roofs for buildings
IPC: E04B5/18
Filed: 1947-10-20
Abstract: 648.973. Floors: roofs. COCKING W. C. Oct. 20, 1947, Nos. 28025 and 28872. Convention dates. Oct. 20, 1947 and Oct. 29, 1947. [Class 20(iv)] Floors and roofs are formed of reinforced concrete cast on permanent shuttering comprising a soffit of closely butting wood-wool and cement sheets on which are arranged spaced wood-wool and cement rib slabs, reinforcing elements for the concrete being located in the spaces between these slabs. The shuttering may comprise preformed units each formed of a rib slab or two or more rib slabs, either spaced side by side or superimposed one on another or both, secured longitudinally of a soffit sheet, the slabs being of the same length as the soffit sheet but narrower. As shown in Fig. 1, the soffit sheets 2 are supported on temporary centering 1, the slabs 3, 4, laid transversely with reinforcements 6 between, are secured thereto and to each other by mortar with or without nails, and the concrete 8 is cast in the spaces between the slabs and over their tops. Fig. 6 is an end view of a preformed shuttering unit with rectangular wood-wool and cement blocks 10 secured at intervals along the tops of the slabs 4; the concrete is cast level with the tops of the blocks, and transverse reinforcements may be arranged in the spaces between them; units are described with one, two or three slabs in each rib, with or without the blocks 10. A plaster &c. ceiling may be provided beneath the sheets 2 after removal of the temporary centering.
Patent GB-888626-A (GB)
Title: Improvements in or relating to the isomerization of normal paraffins
IPC: C07C5/27
Filed: 1959-08-17
Abstract: Normal paraffins are isomerised in the liquid phase at 60 DEG F.-120 DEG F. in the presence of dissolved aluminium bromide and aluminium bromide supported on an inert carrier.  Suitable paraffins are C4-C7 normal paraffins in which are dissolved 0.3%-15% by weight, based on hydrocarbon, of aluminium bromide.  Additionally there may be added, based on the paraffin, 1%-30% by weight of a hydrogen halide promoter, 1%-50% by volume of naphthenes and 5%-500% by volume of isobutane.  Aromatics are preferably maintained below 0.01%.  The solid catalyst may contain as support, calcined bauxite, alumina, molybdena, silica gel, ferric oxide, pumice, fuller's earth or active clays, earths or carbons and especially mixtures of alumina and molybdena or ferric oxide, e.g. containing 2%-20% of molybdena or 15%-30% ferric oxide.  The support may contain 10%-100% of aluminium bromide based on the support and is preferably fully saturated. Aluminium chloride may also be present.  In continuous operation space velocities of 0.02-5 vol./vol./hr. are used.  Dissolved halide is removed from the product by distillation, adsorption on bauxite diatomaceous earth or charcoal or by crystallising by cooling to -30 DEG F.
Patent GB-279490-A (GB)
Filed: 1927-10-21
Abstract: 279,490. British Thomson-Houston Co., Ltd., (Assignees of Sykes, W. P.). Oct. 22, 1926, [Convention date]. Hardening.-In a method of making hard alloys of iron with tungsten or molybdenum, which are free from or very low in carbon, a body of the metals in close association is heated to a temperature at which a solid solution of one metal in another will take place, then rapidly cooled, and afterwards raised to and maintained at an intermediate temperature. For example, an alloy consisting of molybdenum, and less than 0.02 per cent of carbon may be made from a mixture of iron and molybdenum powders by heating the pressed bar to about 1410‹ C. in hydrogen for one hour, quenching in water, and heating for sixty hours at about 600‹ C.
Patent GB-1397648-A (GB)
Title: Packaging bone-in cuts of meat
IPC: B65D77/00
Filed: 1973-06-13
Abstract: 1397648 Packaging meat GOODYEAR TIRE & RUBBER CO 13 June 1973 [10 July 1972] 28081/73 Heading B8C A bone-in cut of meat is packaged by covering the one or more exposed areas of bone in the meat with a piece of plastics film which has substantial elongation; enclosing the meat in a heat-shrinkable bag, evacuating and sealing the bag and then heating the bag to shrink it against the meat. The elongation of the plastics film may vary from about 300 to 1100% at a temperature of about 32‹ F., according to the cut of the meat and the thickness of the film. The film may be plasticized polyvinyl chloride, prepared by extrusion, calendering or solution casting. The bag may be sealed by a clip.
Patent GB-173848-A (GB)
Title: Improvements in electric immersion heaters
IPC: H05B3/80
Filed: 1920-10-05
Abstract: 173,848. Frei, F. Oct. 5, 1920. Heating by electricity. - An immersion electric heater comprises an annular chamber a containing a heating-resistance of which the leads are enclosed in separate tubes brazed into the inner walls of the chamber and extending in juxtaposition to the handle of the device. The resistance is formed by a wire v wound between a mica layer and an insulation of cement. The leads are insulated from the sides of the tubes by beads. To vary the heating the resist. ance may be divided into a number of units, additional tubes being brazed into the device to accommodate the leads necessary.
Patent GB-306568-A (GB)
Title: Improvements in a retinoscope
IPC: A61B3/12
Filed: 1927-10-24
Abstract: 306,568. Copeland, J. Oct. 24, 1927. Sight-testing apparatus.-Retinoscopes, of the kind in which illumination due to a ribbon of light reflected from a mirror 23 is viewed through a small aperture 26 in the mirror, have the ribbon of light formed by the projection through lenses 24 of the light from a line source 55 which is capable of rotation about the axis so that the image may be brought into coincidence with any meridian of the eye. Within the tubular handle 12 of the retinoseope is arranged a plunger 34 upon which the lamp 55 is mounted. This plunger is connected by a rod 28 to a second plunger 35 having a pin 51 passing through a longitudinal slot 52 in the casing 12 which extends half-way round the casing. A sleeve 50 receives the head of the pin 51 and longitudinal and rotational movement of the lamp 55 is effected by means of this sleeve 50. Both plungers contain insulating sleeves as shown, so that the rod 28 may be connected to one of the circuit wires through the spring 47 and plug 42, the other wire being connected to the casing by, the plug 43 and the pin 49. Longitudinal movement of the lamp causing the exit beam to be convergent or divergent as desired and rotation of the lamp by the sleeve 50 enables the' line image to be set to any meridian. Specification 286,793 is referred to.
Patent GB-1121130-A (GB)
Title: Aqueous synthetic resin dispersion for the manufacture of corrosion-resistant protective coatings
IPC: C08F214/08
Filed: 1965-07-05
Abstract: An aqueous copolymer dispersion based on 1,1-dichloroethene has a monomer composition of from 82 to 87 parts by weight of 1,1-dichloroethene, from 13 to 18 parts of butyl acrylate, from 1 to 5 parts of methyl methacrylate and from 0.1 to 1 part of a polymerizable carboxylic acid, which has been obtained by grafting methyl methacrylate on to a trunk copolymer made up from units of the other monomers, and to which have been added from 4 to 9% by weight, calculated on the solid substance, of a non-ionic surface-active oxyethylated compound and, if desired, fillers, pigments and soluble dyestuffs.  In the example, methyl methacrylate is grafted on to a copolymer of 1,1-dichloroethene, n-butyl acrylate and itaconic acid, using H2O2 as catalyst, and oxyethylated nonyl phenol is added to the latex produced. The latex, in combination with e.g. polyvinyl chloride, may be applied to concrete (see Division B2).  Reference has been directed by the Comptroller to Specification 963,296.ALSO:Concrete surfaces are coated with an aqueous dispersion containing a copolymer obtained by grafting methyl methacrylate on to a trunk copolymer of 1, 1-dichloroethene, butyl acrylate and a dicarboxylic acid, a nonionic surface-active oxyethylated compound and, if desired, fillers, pigments and soluble dyestuffs. In the example a dispersion containing a graft polymer of methyl methacrylate on a 1, 1-dichloroethene/n-butyl acrylate/itaconic acid copolymer and oxyethylated nonyl phenol is brushed or sprayed on to concrete, followed by a surface coating containing said dispersion and a filler e.g. polyvinyl chloride.  Reference has been directed by the Comptroller to Specification 963,296.
Patent GB-775692-A (GB)
Title: Photographic developers
Inventor: RAMSAY DAVID WILLIAM CRICHTON
IPC: C07D209/48
Filed: 1954-10-01
Abstract: The invention comprises compounds of the formula <FORM:0775692/IV(b)/1> where R1 and R2 are alkyl or substituted alkyl or form a ring with the N atom, X is hydrogen, alkyl, substituted alkyl, alkoxy, substituted alkoxy, amino or substituted amino and Y is carboxylic acid or sulphonic acid or a salt thereof; the benzene nuclei may be further substituted.  These are made by heating amines of the formula <FORM:0775692/IV(b)/2> with the appropriately substituted phthalic anhydride, the group (X=amino) being introduced, if necessary, by nitration and reduction.  In the examples 4-(41-carboxyphthalimido)-N : N - diethylaniline, 4 - (41 - carboxyphthalimido) - 3 - ethoxy - N : N - diethylaniline, 4 - (41 - sulphophthalimido) - 3 - ethoxy - N : N - diethylaniline and 4-(41-carboxyphthalimido) - 3 - methyl - N : N - diethylaniline are made by direct condensation.  The first-named is nitrated and the 3-nitro compound reduced to 3-amino by Raney nickel hydrogenation. According to the Provisional Specification the group Y (which may be any anionic solubilizing group) may be present in any part of the molecule and can be introduced after the condensation. 4-Sulphophthalic anhydride is made by heating the corresponding acid.
Patent GB-966259-A (GB)
Title: Securing mechanism for engine cylinder liners
IPC: F02F1/08
Filed: 1962-07-24
Abstract: 966,259. Cylinders. MASCHINENFABRIK AUGSBURG-NURNBERG A.G. July 24, 1962 [July 28, 1961], No. 28372/62. Heading F1B. [Also in Division F2] A cylinder liner 1 is secured by a split expanding ring 5 mounted in a groove 6 in the cylinder in which the ring is radially and axially adjustable. The ends 9, 10, of the ring are tapered to co-operate with a wedge 11 which is adjustable by a nut 14 to expand the ring radially whereby inclined co-operating faces 7, 8 on the ring and groove force the ring axially towards the cylinder head to clamp the liner 1 tightly in position.
Patent GB-696143-A (GB)
Title: Improvements in or relating to jet-engines and method of operating at increased output
IPC: F02C3/30
Filed: 1950-11-22
Abstract: 696,143. Generating combustion products under pressure. UNITED AIRCRAFT CORPORATION. Nov. 22, 1950 [Dec. 2, 1949]. No.. 28539/50. Class 51(i) [Also in Group XXVI] In a gas turbine jet propulsion engine in which the turbine exhaust gases are 'reheated by the injection of additional fuel, pure oxygen, liquid oxygen or hydrogen peroxide is injected into the engine to complete the burning of the additional fuel. The exhaust gases from the turbine 3 are reheated in a combustion chamber formed between conical members 21, 23 into which fuel is injected through nozzles 27. To ensure complete burning of this fuel oxygen is injected into the reheat chamber through nozzles 33. If desired, the oxygen may be injected ahead of the compressor 2 or main combustion chamber 13. The oxygen may be in the form of pure oxygen, liquid oxygen or hydrogen peroxide. Oxygen from the tank 41 passes through a stop valve 46, pump 45, control valve 57 and manifold 35 to the nozzles 33. The valve 57 may be controlled manually or by a mechanism 58 responsive to the airflow through the engine. The mechanism 58 comprises a spring loaded diaphragm 63, subject on opposite sides to the pressure at the suction and discharge side of the compressor 2. To enable the amount of reheat fuel to be increased without increasing the temperature of the gases coolant may be injected into the engine through nozzles 37. The supply of coolant may be manually controlled or controlled by a valve operated by the mechanism 58. The coolant may be injected into the engine intake or into the combustion chamber.
Patent GB-392432-A (GB)
Title: A new or improved method of and means for securing valve seats in internal combustion engines
IPC: F01L3/22
Filed: 1932-10-13
Abstract: 392,432. Cylinders. OUBRIDGE, W. A., Parklands, Park Road, Coventry. Oct. 13, 1932, No. 28546. [Class 7 (ii).] A valve seating-ring c is retained in a recess b by a ring a of ductile metal which is placed in the recess b and caused to flow by pressure on the ring c to fill under-cut grooves b<1>, c<1>; the ring a is other than conical in form and may be formed of lead.
Patent GB-192163-A (GB)
Title: Improvements in and relating to rubber solutions
IPC: C09J107/00
Filed: 1921-10-27
Abstract: 192,163. Sheppard, S. R. Oct. 27, 1921. India-rubber solutions.-In rubber solutions to which a vulcanizing-agent such as sulphur chloride is added, the vulcanizing-agent is dissolved in a volatile non-inflammable medium. 2 lbs. of rubber are dissolved in 6 gals. of carbon tetrachloride or liquid acetylene chloride, and to this solution is added 10 c.c. of sulphur chloride dissolved in 1000 c.c. of acetone and 1200 c.c. of amyl acetate.
Patent GB-660600-A (GB)
Title: Improvements in or relating to lighting and transparency holder units for reproduction cameras
Inventor: MESSENGER GEORGE EDWARD
IPC: G03B27/54
Filed: 1948-11-03
Abstract: 660,600. Photographic copying apparatus. HUNTER-PENROSE, Ltd. Nov. 3,1949 [Nov. 3, 1948], No. 28596/48. Class 98 (i). A lighting and transparency holder unit for a photographic camera which is suitable for process work, comprises a support on which a light condenser is mounted for adjustment in the direction of its optical axis, a transparency holder mounted with the condenser for movement therewith, a lamp housing to hold a concentrated source of illumination mounted on the support with the source and an opening for the emission of light to the condenser substantially centred on the condenser axis and for adjustment to and from the condenser along said axis, a heat filter in the light path between the condenser and the source and means for obturating all direct light from the source other than that passing through said opening in the lamp house to the condenser. The unit shown includes a hollow arm 1, which is attachable by a plate 2 to the front 3 of a reproduction camera (not shown). A. tube 58 is slidable within the arm 1 and carries at 64 a housing 65 for a lamp as described in Specification 660,602, [Group XI]. Slidable along the arm by rack and pinion gearing is a condenser 4 on which is mounted a transparency holder as described in Specification 660,601. Hinged at 9 to the arm 1 is a flashing lamp 8.