baber/WOPTO huggingface dataset:
Patent GB-715996-A (GB)
Title: Control system having asynchronous three-phase current machines with slip-ring rotors
IPC: H02P5/50
Filed: 1952-06-27
Abstract: 715,996. Control of several A.C. motors. ALGEMENE KUNSTZIJDE UNIE, N. V. June 27, 1952 [Aug. 7, 1951], No. 16226/52. Class 38(3) In a system for controlling the relative speeds of a number of electric motors, which may operate individual parts of apparatus for making staple fibres, a motor 27 of the direct-current or threephase commutator type drives a rotary filter 22 and a conveyer belt 23 as well as a polyphase asynchronous generator 28 which has a slip-ring rotor. The machine 28 is connected in cascade with frequency converting machines 29 and 31 the rotors of which are driven through uni-directional transmission mechanism from separate directcurrent motors 35, 36, having rectifying control apparatus 37, 38. The rotors of the machines 29 and 31 are connected to the rotors of the motors 30 and 32 respectively, the stators of the machines 28, 30, and 32 being connected to a three-phase supply network. The motor 30 drives rollers 24 and a conveyer belt 25 whilst the motor 32 drives rollers 26. In order to change the ratios of the speeds of the motors 27, 30. 32, in accordance with variations in the properties of the treated material 21, the grid voltages of rectifiers 37, 38, are controlled by changes in the positions of feelers 39, 40. which are responsive to the thickness of the material 21 or its sag. If only the ratio and differences in speeds between the driven members are to be kept constant, a tachometer generator is used as a regulating member for the grid voltage.
Patent GB-403116-A (GB)
Title: Process for manufacturing waterproof paper and pasteboard
IPC: D21H23/00
Filed: 1932-06-08
Abstract: Water-impermeable and waterproof papers and pasteboards containing 50-60 per cent of asphalt distributed in finely divided form are prepared by pretreating the fibrous pulp in the hollander or beating vat with solutions of resin soaps, oleates of alkali metals, alkaline gels or alkali salts of turkey red oils, thereupon adding the requisite quantity of asphalt in the form of an aqueous emulsion, and working up the material on the paper-machine.  If desired, prior to working up the pulp on a paper-machine, a precipitant may be added to cause the asphalt to be precipitated in finely divided form throughout the mass; the use of sodium chloride, sulphate or bisulphate, aluminium sulphate or alum is specified.  In an example wood-cellulose is treated with water-glass until slightly alkaline, a 50 per cent aqueous asphalt emulsion added, and after mixing alum is incorporated to precipitate the emulsion throughout the mass to which fillers &c., may also be added and which is then worked up on the paper-machine; it contains about 60 per cent of asphalt.  The products may contain fillers such as glass, mica or starch gel, may be coloured, and may also before reaching the paper machine be suitably coated, for instance with oil or lacquer paints. Specification 262,838, [Class 70, Indiarubber &c.], and 359,950 also are referred to.
Patent GB-420686-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H03G3/22
Filed: 1933-06-06
Abstract: 420,686. Valve circuits for wireless reception. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. June 6, 1933, No. 16271. Convention date, June 4, 1932. [Class 40 (v)] Relates to valves, amplifiers, rectifiers, or oscillators of the type described in Specification 418,132, and consists in means for applying variable control voltages either to the electron density-regulating grid G1 or to the velocity-regulating grid G2, or to both. The control voltages may be varied manually, by means of adjustable tappings from the high-tension battery B, or they may be derived from known systems of automatic volume control.
Patent GB-434090-A (GB)
Title: Improvements in and relating to vacuum-cleaner nozzles
IPC: A47L9/02
Filed: 1935-06-06
Abstract: 434,090. Vacuum cleaners. PFEIFFER, P., HAHN, L., and FABER, E., (trading as MAUZ & PFEIFFER), 45, Alte Stuttgarterstrasse, Botnang, Stuttgart, Germany. June 6, 1935, No. 16504. Convention date, Jan. 4. [Class 8 (i)] A vacuum-cleaner nozzle is formed with two orifices a, b, the former being in direct connection with the suction pipe p and the latter having its end remote from the nozzle face controlled by a rotary valve f. When the valve is open air passing through it crosses the raised bridge e between the orifices and thus loosens threads. The nozzle is pivotally connected to the pipe p.
Patent GB-120559-A (GB)
Title: Improvements in Regenerative Tipping Furnaces.
Inventor: AUBERT ALBERT MAURICE
IPC: F27B7/00
Filed: 1918-10-10
Abstract: 120,559. Aubert, A. M. Oct. 22, 1917. [Convention date]. Tilting-furnaces.-In a tilting-furnace having reversible regenerators at the ends, a pair of interchangeable connexions is provided between each regenerator and the furnace, one of suitable form for the supply of air, and the other for the exit of the combustion products. As shown, each connexion d, e is in two parts d<1>, d<2>, and e', e<2>, on the regenerator and furnace respectively, and these parts are carried by sector plates b, f, mounted on pins c, so that either the parts forming the air-inlet connexion or the combustion-product outlet can be brought into operative position between the regenerators and the furnace. Each part consists of a metal casing with a refractory lining of suitable form. The sector plates are manipulated by tools inserted into sockets u. and their range of movement is limited by threaded pins carrying locking-nuts. Mounted on each regenerator g, g<1> is a melting- tank p, from which molten pitch passes through a filter q to a tank r with a valve-controlled delivery pipe s. ln addition to the regenerative chambers g, g<1> a second set of chambers is provided. The reversing-device consists of a double breeches-pipe with four pivoted valves.
Patent GB-453373-A (GB)
Title: Improvements in spring mattresses and the like
IPC: A47C23/053
Filed: 1935-06-07
Abstract: 453,373. Spring upholstery. CROWN BEDDING CO., Ltd., Redfern Road, Tyseley, Birmingham.-(Rome Co., Inc. ; Skillman Avenue, Long Island, New York, U.S.A.) 'June 7, 1935, No. 16525. [Class 52 (iv)] The end coils of upholstery springs have integral radial hooked loops b to engage the adjacent spring, a looped locking wire e being subsequently inserted and bent around the loop b.
Patent GB-949087-A (GB)
Title: Production of cyanuric acid
Inventor: CLOAK LOUIS HARMON
Filed: 1961-05-06
Abstract: Cyanuric acid is produced by heating urea and/or biuret in the presence of a phenol containing as substituents one or more alkyl radicals, the total number of carbon atoms in the alkyl radicals being greater than 3.  The total number of C atoms in the alkyl groups is preferably 5 to 15, and suitable phenols are 3-methyl-6-tertiary butyl phenol, nonyl phenol or dodecyl phenol; the weight of phenol used may be at least equal to that of the urea and/or biuret. The reaction is carried out at above 175 DEG  C. and may be performed under reflux.  The cyanuric acid may be removed by cooling the mixture after reaction and filtering off the cyanuric acid and washing it with alcohol, and, if desired, recrystallizing. The time required for the reaction is 1 to 10 hours.
Patent GB-145451-A (GB)
Title: Volatilising, injecting and igniting process for internal combustion engines with electrical ignition
IPC: F02B19/06
Filed: 1920-06-18
Abstract: 145,451. Mõdler, F. L. Sept. 26, 1918. [Convention date]. Cylinders receiving liquid fuel; vaporizers, external.-Air enters a small cylinder 6 through a port m from the main cylinder a and liquid fuel through the port n at the end of the outstroke of the piston l. During the instroke the air is compressed sufficiently to vaporize or gasify the fuel which is forced through the ports o, m into the cylinder where it is ignited electrically. A port controlled by a valve in the base of the cylinder may be substituted for the port m, and the timing of the valve may be adjustable. In the Specification as open to inspection under Sect. 91 (3) (a) it is stated that some of the fuel may be ignited in the cylinder b so that the resulting pressure may expel the remainder into the lower cylinder, also that the air enters the cylinder b from the atmosphere and at starting when the cylinder b is cold the fuel and air may be forced into the main cylinder by the piston l and ignited electrically. This subject-matter does not appear in the Specification as accepted.
Patent GB-566140-A (GB)
Title: Apparatus for testing the balance of rotary bodies
IPC: G01M1/02
Filed: 1942-11-23
Abstract: 566,140. Testing balance of rotary bodies. WINGFOOT CORPORATION. Nov. 23, 1942, No. 16562. Convention date, July 7, 1942. [Class 106 (ii)] Apparatus for testing the static balance of toroidal bodies, such as inner tubes for pneumatic tyres, comprises a spider 30 carried on a rotatable shaft 22 and having around its periphery rollers 40 to support the inner tube under test while preventing the formation of unequal circumferential stresses in the tube. A graduated arm 62, Fig. 3, can rotate freely on the shaft 22, but can be locked thereto by a rod 74. A weight 68 is adjustable along a rod carried on the graduated arm 62. The inner tube to be tested is placed on the spider and with the arm 62 locked to the shaft 22, the adjustment of the weight 68 to cause the spider to balance about the shaft 22 is a measureof the out-of-balance of the tube. The spider may be adjustable to suit tubes or other objects of differing sizes. The axis of the spider may be vertical, the rocking of the spider out of the horizontal plane then being used to measure the out-of-balance.
Patent GB-1504246-A (GB)
Title: Pumping unit for evacuating tubes
IPC: F04F9/04
Filed: 1976-04-23
Abstract: 1504246 Diffusion pumps COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 23 April 1976 [5 May 1975] 16612/76 Heading F1E A two-stage pumping unit for evacuating tubes e.g. a television tube 2, comprises a frame 1 supporting an air-cooled mechanical vacuum pump 4 as a first stage connected in series with an oil diffusion pump as a second stage by a discharge pipe 8, the diffusion pump having an inlet to receive the stem 15 of a tube 2 to be evacuated, a seal 17 surrounding the inlet and an oil vapour baffle 29 disposed between the inlet and the body of the pump, the body being enclosed in a main housing 25. The discharge pipe 8 has a rising portion above the outlet of the diffusion pump, and the unit has forced draft generator means such as fans 22, 32 drawing air from relatively cool regions of the frame 1 and connected to force a cooling draft into the main housing 25, over the rising portion of the pipe 8 at 28, and in the regions of the baffle 29 and seal 17. Preferably the draft also cools a trap 30 also provided in the rising portion of the pipe 8, the trap 30, baffle 29, seal 17 and stem 15 all being placed in a secondary housing 31, 19. As described, both the baffle 29 and trap 30 comprise internal parallel metallic blades inclined to the vertical, the blades being connected to supports which are cooled by means of fins (as shown) or splines. The body of the diffusion pump at 26 and the rising portion at 28 are also provided with splines. Outlets 34 in the housing 31, 19 are preferably arranged so that air circulating in the housing 31, 19 is maintained under slight overpressure, whilst outlets 27 in the housing 25 are arranged to direct the cooling air to the portion 28.
Patent GB-457824-A (GB)
Title: Manufacture of 3:4-dihydroxyphenyl-monoalkyl-(or monocycloalkyl-) amino-butanols useful as therapeutic agents
Filed: 1935-06-07
Abstract: 3 : 4-Dihydroxyphenyl-monoalkyl- or monocycloalkyl - aminobutanols are prepared by brominating 3 : 4 - dihydroxybutyrophenone, preferably after preliminary aralkylation, treating the brominated product with an alkyl- or cycloalkyl-amine, and reducing the resulting alkyl- or cycloalkyl-aminoketone.  The products, which possess therapeutic properties, may be separated into their optical isomers by means of optically-active acids.  Examples are given of the preparation of (1) 3 : 4-dihydroxyphenyl - methylaminobutanol by brominating 3 : 4-dibenzyloxy-butyrophenone, treating the brombutyrophenone with methylbenzylamine and reducing the resulting 3 : 4-dibenzyloxy-phenylmethylbenzylaminobutanone as its hydrochloride in alcohol solution with hydrogen in the presence of palladium; (2) 3 : 4 - dihydroxyphenyl - cyclopentylaminobutanol by treating brominated 3 : 4-dibenzyloxy-butyrophenone with cyclopentylamine and the product first reduced in alcohol solution using palladium and hydrogen and the resulting 3 : 4-dihydroxycyclopentylaminobutyrophenone then hydrogenated in aqueous hydrochloric acid solution in the presence of palladium.  The Specification as open to inspection under Sect. 91 also describes the preparation of 3 : 4-dihydroxyphenyl-ethylaminobutanol by reducing with hydrogen the reaction product of 3 : 4 - dibenzyloxy - bromobutyrophenone with ethylbenzylamine in presence of palladium. This subject-matter does not appear in the Specification as accepted. 3 : 4-Dibenzyloxybutyrophenone is obtained by heating butyropyrocatechin in alcohol solution with benzyl chloride in presence of potassium carbonate and sodium iodide.
Patent GB-1126978-A (GB)
Title: An improved attachment for cameras
IPC: G03B17/02
Filed: 1966-04-15
Abstract: 1,126, 978. Camera accessory shoe. F.P. CANNING. April 14, 1967 [April 15, 1966], No.16696/66. Heading G2A. An accessory shoe for a camera is moulded from a plastics material and is provided in one face with a groove of inverted T cross-section, the other face having a downwardly depending skirt adapted to fit over one of the winding knobs on the camera.
Patent GB-888416-A (GB)
Title: Production of an intermediate for the synthesis of reserpine
IPC: C07D459/00
Filed: 1958-05-23
Abstract: 5b  - Hydroxy - 8 - oxo - 1,4,4aa ,5,8,8aa  - hexa - hydronaphthalene-1b -carboxylic acid is prepared by selectively reducing 5,8-dioxo-1,4,4aa ,5,8,8aa -hexahydronaphthalene-1b -carboxylic acid with an alkali or alkaline earth metal borohydride in an aqueous medium which may contain a water-miscible solvent, e.g. tetrahydrofuran or methanol, in the presence of a buffer, below 10 DEG C., in a current of an inert gas, e.g. nitrogen, maintaining the pH between 6 and 7 throughout the reduction.  Specified buffers include organic bases, e.g. triethylamine, and alkali metal carbonate, bicarbonate, phosphate and borate.  Detailed examples are given.  Specifications 868,475, 868,477, 868,478, 868,483, 868,484, 868,485, 888,407, 888,408, 888,409, 888,410, 888,411, 888,412, 888,413, 888,414 and 888,415 are referred to.
Patent GB-893499-A (GB)
Title: Nitrocelluose particles
Inventor: O'NEILL JOHN JOSEPH
IPC: C06B21/00
Filed: 1959-08-15
Abstract: Substantially globular but only partly gelatinized particles of nitrocellulose having a diameter of not more than about 0,012 inch are formed by suspending nitrocellulose fibres in an aqueous medium in the ratio of about 1 part by weight of nitrocellulose to 10-17 parts by weight of aqueous medium, coating the fibres with a protective colloid, adding about 1,6 parts by weight of ethyl acetate for each part by weight of nitrocellulose, thereafter adding ethyl acetate to the slurry at a rate not greater than about 0,25 part by weight per 100 parts by weight of nitrocellulose per second while maintaining the ethyl acetate to nitrocellulose ratio not greater than about 3:1, agitating the slurry until the fibres have assumed a globular form without complete dissolution of the nitrocellulose, and removing the solvent from the globular particles.  The protective colloid may be gum arabic or an animal glue.  In the example, 100 parts by weight of fibrous nitrated cotton linters having a nitrogen content of 12,6% are slurried in 1500 parts of-water and the slurry is agitated with 50 parts of gum arabic.  One part of dinitro diphenylamine is added, the slurry is heated to 65 DEG -68 DEG F. and 160 parts by weight of ethyl acetate are uniformly dispersed in the slurry.  A total of 140 further parts of ethyl acetate is added at a rate of 0,25 parts per second and agitation is continued until the particles assume a globular shape.  A solution of 90 parts of sodium sulphate in 300 parts of water is uniformly mixed with the slurry to aid the formation of dense non-porous grains, and the slurry is heated to and maintained at the boiling point until all the solvent has been removed from the globules.  Globular nitrocellulose grains produced as described above are suitable for use in moulding large propellant grains and other articles.  U.S.A. Specifications 2,027,114 and 2,160,626 are referred to.
Patent GB-1213608-A (GB)
Title: Digital meter with auxiliary visual analog display
IPC: G01R13/40
Filed: 1969-04-01
Abstract: 1,213,608. Selective signalling. TIME SYSTEMS CORP. 1 April, 1969 [8 April, 1968; 14 Oct., 1968], No. 16910/69. Heading G4H. The contents of a counter are displayed both digitally, by Nixies, 12, and in an analogue manner by energizing a correspondingly positioned neon of an array 26 of neons which may be arranged either in an arc or in a straight line (Fig. 2, not shown).
Patent GB-1419213-A (GB)
Title: Acylurea compounds and their use
IPC: C08K5/00
Filed: 1974-04-18
Abstract: 1419213 Acylurea compounds CIBA-GEIGY AG 18 April 1974 [7 May 1973] 16949/74 Heading C2C [Also in Divisions C3 and G2] The invention comprises compounds of Formula I, where A is CH 2 =CH- or CH 2 ClCH 2 - and n = 1-100. These compounds may be prepared by the sequence In examples, n = 1, 2, 3, 4 and 33. The compounds may be used to crosslink gelatine or polyvinyl alcohol.
Patent GB-478997-A (GB)
Title: A new or improved land-drainage pipe
IPC: E02B11/00
Filed: 1937-06-18
Abstract: 478,997. Agricultural drainage. DIMICK, D. B. June 18, 1937, No. 16961. [Class 33] [Also in Group XXVIII] A pipe for land drainage comprises U-shaped &c. metal pipe sections 10 bridged at the top by a flat or curved wall 13 which is inclined along the length of the section to form a trough. The end of each section where the top wall is highest is preferably provided with a socket 11 to receive the plain opposite end 12 of the adjacent section, the pipe thus being provided with inlet openings 14 for the collected water.
Patent GB-422950-A (GB)
Title: Improvements in earrings
IPC: A44C7/00
Filed: 1934-06-08
Abstract: 422,950. Earrings. ELLIOTT, E. C., 56, Snow Street, and WINBERG, R., 52, Ardoene Street, both in Providence, Rhode Island, U.S.A. June 8, 1934, No. 17088. Convention date, Jan. 30. [Class 43] An earring comprises a loop - like frame 10 which embraces the lobe of an ear, a saddle 11 and binding screw 13 which contact with the inner and outer surfaces respectively of the lowermost portion of the concha, and an ornament 20. The ends of the saddle may be formed as shown at 24, Fig. 5. A mount 16 for a jewel 17 and an ornamented portion 18 may be provided.
Patent GB-529935-A (GB)
Title: Locking device for nuts
IPC: F16B39/10
Filed: 1939-06-12
Abstract: 529,935. Locking nuts. HAFELE, J. June 12, 1939, No. 17170. Convention date, June 21, 1938. [Class 89 (i)] A nut is locked by a plate 5 apertured to fit the nut loosely and having a resilient centre portion 6 and dovetailed side flanges 3 that snap over the inclined edges of flats on a washer 1 having a pyramidal projection 2 engaging a recess in the part to be bolted to anchor the washer against rotation. The under side of the washer may be concave to allow sufficient yield so that the nut may always be turned into a lockable position. In a modification for use in confined spaces, the locking member engages only a part of the periphery of the nut and is held from backing away by an upstanding flange on the washer plate.
Patent GB-570630-A (GB)
Title: Improvements relating to electrostatic precipitators
IPC: B03C3/10
Filed: 1943-10-19
Abstract: 570,630. Electrostatic precipitating apparatus. JENNINGS, H. W. K. (Sturtevant Co., B. F.). Oct. 19, 1943, No. 17197. [Class 39 (i)] Electrostatic - preoipitator comprises a cylindrical drum 10 with tangential inlet and outlet passages 11 and 12 for the gases under treatment. A number of high-tension wires 30 are placed across the inlet; the casing is earthed and encloses a rotating drum 13 carrying spaced metal discs 15 which forms the other electrode. The drum rotates in the same direction as the gas flow, and suction nozzles 22, of V-shape,. are placed close to the drum in a space separated from the inlet passage by division walls 21. The wall of the outlet passage has a turned-up lip 34 which skims off air carrying dust separated by centrifugal action and deflects it into a passage 35.
Patent GB-476546-A (GB)
Title: Power supply system for electrically driven vehicles
IPC: B60L5/36
Filed: 1937-06-21
Abstract: 476,546. Power supply for electric vehicles. SOC. PARISIENNE POUR L'INDUSTRIE DES CHEMINS DE FER ET DES TRAMWAYS ELECTRIQUES. June 21, 1937, No. 17208. Addition to 407,244. [Class 104 (iii)] The current conductors are arranged in pairs 1, 2 of opposite polarity, and the collector comprises two sliding contacts 1<1>, 2<1> mounted on a bow &c. A and separated by an insulator D, the width of each contact being less than the distance between adjacent conductors 1, 2, to prevent short circuiting during transverse movement of the collector. The bow may carry insulating horns C<1>, C<2> at the ends. In another form, the collector has four contacts, and in another form for three-phase current it has three, the conductors being arranged in groups of three. At a cross-over between two main tracks, a number of pairs of short conductors are arranged between the conductors on the main tracks.