baber/WOPTO huggingface dataset:
Patent GB-169069-A (GB)
Title: Improvements in centrifugal pumps
IPC: F04D1/00
Filed: 1920-07-26
Abstract: 169,069. Cherrie, C. M. July 26, 1920. Balancing moving parts; leakage-preventing devices.-A centrifugal pump with impellers 3 and discharge volutes 6 has chambers 7 at each end of the casing in connection with the volutes 6 through the clearance spaces at the peripheries of the impellers, but diaphragms 9 prevent any communication with the suction side. The chambers 7 contain the inner ends of stuffing-boxes 8 and thus prevent air from entering. The inlet 2 is arranged between the single suction impellers 3. the end thrusts of which are balanced. In a modification, additional impellers are arranged between the inlet and the impellers 3, the discharge side of the additional impellers being connected to the suction side of the main impellers. In another modification, a double-sided impeller 23, Fig. 4, discharges into the volutes 16 leading to the inlets 5 of the impellers 3. In another modification, each impeller is enclosed in a separate casing and the casings are connected.
Patent GB-1144755-A (GB)
Title: Self adhesive tapes
IPC: C09J7/38
Filed: 1966-05-19
Abstract: 1,144,755. Pressure-sensitive adhesive copolymers. BEIERSDORF A.G. 19 May, 1966 [19 May, 1965], No. 22372/66. Headings C3B and C3P. [Also in Division B2] Pressure-sensitive adhesive copolymers which comprise (a) 100 parts by weight of an alkyl acrylate whose alkyl group has 4-10 carbon atoms, or of a mixture of alkyl acrylates whose alkyl groups have 1-14 carbon atoms but at least half by weight of which is provided by one or more acrylates with alkyl groups of 4 or more carbon atoms, with (b) 0À25 to 11 parts by weight of one or more ethylenically unsaturated epoxy monomers, and, optionally, (c) a proportion of an acid or anhydride monomer or diketene, and, optionally, (d) a minor proportion of a monomer selected from itaconic esters, amides of acrylic and methacrylic acid, vinyl ethers and vinyl esters, are prepared by polymerizing the corresponding monomers in solution in the presence of a catalyst such as dibenzoyl peroxide or azodiisobutyronitrile, or in emulsion with a redox catalyst (unspecified). The epoxy monomer may be glycidyl acrylate or methacrylate or allyl glycidyl ether. Optional component (c) may, besides diketene, be maleic anhydride or acrylic, methacrylic, crotonic or itaconic acid. For application in adhesive tapes or films the copolymers are combined with 0À05 to 5%, by weight of the copolymer, of a curing catalyst, e.g. zinc chloride, magnesium chloride, monosalts of maleic acid with a tertiary amine, alkyl acid phosphates, p-toluene-sulphonic acid, oxalic acid, maleic acid and tertiary amines. After application to a suitable backing, the adhesive is dried and cured at elevated temperature.
Patent GB-873961-A (GB)
Title: Improvements in or relating to the construction of smokers' articles such as cigarettes
IPC: A24D1/02
Filed: 1958-07-11
Abstract: 873,961. Cigarettes and cigarette-making machines; cigars. MILLER, A. P. July 11, 1958, No. 22382/58. Class 130. Cigarette or cigar wrappers have V-shaped or semi-circular slits 26 acting as self-valving vents and rendered visible by printing 27 which may extend between the slits to form a band around the wrapper. A cigarette may have a mouthpiece 21 with or without a filter tip. The slits are made by deflection of wrapper portions as by carrying a continuous wrapper strip past sheering projections which also apply the printing.
Patent GB-583674-A (GB)
Title: Improvements relating to brackets
IPC: F16B5/02
Filed: 1944-11-15
Abstract: 583,674. Adjustable brackets. EDUCATIONAL SUPPLY ASSOCIATION, Ltd., and PHILLIPS, A. Nov. 15, 1944, No. 22558. [Class 52 (v)] An adjustable bracket comprises a plate 10, which is secured to a fixed structure, and a block 11, which carries an adjustably supported object, the plate 10 and block 11 being provided with mutually engaging serrations 16, 20 on the plate and block respectively, and the serrations being inclined to the horizontal. The block 11 may slide in a channel in the rear face of a roller track 12 of a door or the like, and the parts 10, 11 and 12 are locked together by the bolt 13, the slot 17 in the plate and slot 21 in the block allowing for relative displacement of the plate and block in a vertical and horizontal direction respectively. Coarse vertical adjustment is obtained by moving the block 11 vertically with respect to the plate 10, while a fine vertical adjustment is obtained by moving the block 11 horizontally. The head of the bolt 13 fits between two vertical ribs on the back of the plate 10, and is thus prevented from turning while the nut 14 is being tightened.
Patent GB-482698-A (GB)
Title: Process of making alkali sub-silicates
IPC: C01B33/32
Filed: 1937-08-17
Abstract: Solid sodium or potassium silicates are obtained by mixing together solid caustic alkali and solid waterglass wherein the ratio of silica to alkaline oxide is greater than 1 : 1, in such proportions that the ratio of alkaline oxide to silica is greater than 1 : 1, and in the absence of sufficient water to dissolve the ingredients substantially, and then reacting the mixture at a temperature below the fusing point of either ingredient, for example from 100 to 250 DEG  C.  Water, if added, should not exceed 7 per cent of the mixture.  The plastic mass first formed during the reaction may be stirred until a granular product is obtained, and the silicate formed may be heated above 300 DEG  C. but below its fusing point to yield the technically anhydrous product.  Meta-, sesqui- and ortho-silicates may be obtained but the composition of the products may be adjusted by a treatment with waterglass followed by heat treatment at about 200 DEG  C.  Tri- or di-sodium phosphate or sodium carbonate may be incorporated with the silicates at any point in the process when they are to be used as detergents.  Specification 477,518 is referred to.
Patent GB-1014388-A (GB)
Title: Improvements in and relating to secondary radar systems
Inventor: ALLEN ALARIC
IPC: G01S13/76
Filed: 1963-06-09
Abstract: 1,014,388. Aerials; pulse radar. A. C. COSSOR Ltd. June 3, 1964 [June 6, 1963], No. 22642/63. Addition to 965,702. Headings H4A and H4D. Relates to arrangements at a secondary radar transmitter to prevent actuation of the associated transponder by sides lobes of the interrogating pulse directive radiation pattern by transmitting a " control " pulse substantially omnidirectionally. In Specification 965,702 the control pulse radiation pattern is arranged to have a hump or dip in the direction of the directive pattern; according to the present invention an array A . . . F affords highly directive radiation, aerials C 2 , C 3 , each producing nearly uniform omnidirectional radiation and distribution boxes DB 1 , DB 2 , DB 3  are such that pulses fed to terminal T 2  are applied to the array in correct phase for highly directive radiation, pulses fed to terminal T 1  are applied to aerial C 2  and to part A of the array such that a hump is produced on the omnidirectional radiation in the direction of the directivity of the array and pulses fed to terminal T 3  are applied to aerial C 3  and to part F of the array such that a dip is produced in the omnidirectional radiation in the direction of the directivity of the array. A pulse generator PG affords three trains (a), (b), (c), Fig. 2, of R.F. pulses at 400/second and 200/second respectively. Pulses (a) are always fed to the array. With cyclically operating switches S 1 , S 2 , S 3  as shown pulses (b) are fed to terminal T 1 ; with the switches reversed the pulses (b) are fed to the array in addition to pulses (a) and pulses (c) are applied to terminal T 3 . Thus 2-pulse ("control" pulse followed by an " interrogation " pulse) and 3-pulse (a pair of interrogation pulses separated by a control pulse) modes are alternately radiated; other sequences may be utilized.
Patent GB-162586-A (GB)
Title: Improvements in vapour condensing and ejecting systems
IPC: F28B3/04
Filed: 1920-02-14
Abstract: 162,586. Manvers, A. Feb. 14, 1920. Aspirating-apparatus, ejector. - Relates to ejector condensers, suitable for use in the system of tanning by vacuum described in Specification 167,785, [Class 76, Leather]. Water under pressure passing along the main 4 and through a strainer or obturator 18 reaches a chamber 5 through ports 7 in which vapour from connections 2, 3 is drawn into the flow of water and is carried into combining and flared delivery pipes 6, 10 set in a mass of concrete 10<1>. Condensation of the vapour is promoted by a spray of water from a perforated chamber 8 connected to the water main. Delivery takes place to a sump 11 from which condensate is drawn off by a siphon 12, 14, 15.
Patent GB-1062901-A (GB)
Title: Supersonic code identifying apparatus
IPC: B61L25/04
Filed: 1964-06-02
Abstract: 1,062,901. Selective signalling. OKI ELECTRIC INDUSTRY CO. Ltd. June 2, 1964 [June 8, 1963], No. 22807/64. Heading G4H. A coded plate is sensed by sound waves by arranging that waves reflected from adjacent high and low regions on the plate interfere with each other.
Patent GB-980430-A (GB)
Title: Improvements in systems for purifying a gas or a gaseous mixture by reversible adsorption
Inventor: SIMONET GUY
IPC: F25J5/00
Filed: 1961-06-23
Abstract: 980,430. Purifying a gas or gaseous mixture by adsorption. COMMISSARIAT A L'ENERGIE ATOMIQUE. June 23, 1961 [June 23, 1960], No. 22877/61. Heading B1L. [Also in Division F4] In a system for purifying a gas or gaseous mixture treated at sub-zero temperature in an apparatus for separating gases by liquefaction and rectification, in which a gas to be purified is passed at super-atmospheric pressure through a first adsorber whilst a second adsorber is being regenerated by passing through it at a lower pressure a portion of previously treated gas, the function of these adsorbers being periodically exchanged, there is introduced between the two adsorbers an auxiliary heat exchange circuit to transfer the whole of the heat produced during adsorption in the first adsorber to the gas regenerating the second adsorber whilst ensuring that the purified gas and the regenerating gas are maintained at the desired working temperature. In the Figure, the adsorbers are 12 and 13, and the auxiliary circuit is represented by the heat exchangers 17, 18 and 19, compressor 20, and expansion valves 9, 10 and 11. Compressor 20 has its output connected to the top of 18 through expansion valve 10, and its intake connected to the top of 17, and the appropriate sections of these exchangers contain a liquid, e.g. liquid nitrogen, air or oxygen, in the presence of its vapour, the boiling point of this liquid at the pressures in the respective circuits being the desired working temperature of the purified gas and the regenerating gas respectively. The exchangers 17 and 18 are connected by expansion valves 9 and 11 to permit the exchange of vapour or liquid between them. As shown by the solid line I the gases to be purified pass through items 14, 12, 17, 14, 16 and into fractionating column 21 and as shown by the dashed line II the portion of product used as regenerating gas passes through items 16, 15, 18, 13, 15, and to waste. In passing through 12, the gas to be purified is heated and on being cooled in 17 causes the liquid to boil, and in passing through 13, the regenerating gas is cooled and via exchanger 15 cools the entering gas which is warmed up in exchanger 18, causing vapour therein to condense. The resulting changes are balanced in the auxiliary circuit by transfer of vapour and/or liquid through valves 9 and 11. Any general heat losses in the circuit may be compensated for by compressor 20. The purification of H 2 , He and hydrocarbons is referred to and also the separation of mixture of H 2 , D 2  and N 2  into its components.
Patent GB-781225-A (GB)
Title: Improvements in or relating to overhead line systems
Inventor: SCHERER KARL
IPC: H02H9/04
Filed: 1955-08-09
Abstract: 781,225. Correcting inductive disturbance. SIEMENS & HALSKE AKT.-GES. Aug. 9, 1955, No. 22944/55. Class 40 (4). In a telephone system using overhead lines including carrier circuits with intermediate repeaters and straight through circuits, lowpass filters subdivided into two half-sections each comprising series chokes L1, L2 and shunt capacitors C1, C2 are connected shunt capacitor to shunt capacitor in the straight through circuits FF to reduce feedback in the repeatered circuits due to induction and are arranged so that they reduce induced currents in phase coincidence and in phase opposition and serve also as delay chokes for induced surges. Lightning protectors 2 are fitted on the line side of each half-section. Separate coils may be provided to deal with the two types of induced currents although one coil having two windings may be used for both, their combined inductance being effective in the case of phase-opposition and their mutual inductance only in the other. The filter cut-off frequency is lower in the former and the attenuation in the stop band is higher. Coil input turns are more heavily insulated for a higher interturn voltage. The low-pass half sections for a group of lines may be disposed with protectors in a pole-mounted common housing and when a cable connection including a disconnecting point is made between two halfsections the sheathing is connected through and earthed at the disconnecting point.
Patent GB-735823-A (GB)
Title: Improvements in or relating to a rotary fluid power device such as a motor or pump
IPC: F04C2/36
Filed: 1953-08-20
Abstract: 735,823. Rotary engines and pumps. BERRY, F. Aug. 20, 1953 [Aug. 23, 1952], No. 22967/53. Class 110 (2). A rotary engine or pump comprises a pair of annular cylinders arranged in a common plane on opposite sides of a rotary abutment; the pistons of said cylinders being arranged 180 degrees apart and the cylinders being independent of fluid communication with one another. The unit shown comprises a casing 7 made up of plates 33-38 and end covers 39, 40, 41 and has two axially-arranged pairs. of annular cylinders 8, 9 and 10, 11. The rotor shafts 12, 13 carry piston rotors 14, 15, 16, 17 which are provided with pistons such as 18, 19, as shown, adapted to co-operate with the rotary abutment 55 carried by a shaft 22; the piston rotors making two revolutions for each revolution of the abutment. The piston rotors may be formed integral with their shafts and recesses to clear the pistons may be formed in the abutment shaft 22. The pistons of the second pair of cylinders 10, 11 are offset 180 degrees relative to the pistons of the cylinders 8, 9 respectively; the cylinders 8 and 10 and the cylinders 9 and 11 being in series with one another respectively. The thrust bearings 53 are made of bronze and provided with transverse grooves to permit oil to circulate between the ends of ducts 27, 28, 31 in the rotor and abutment shafts; tappings 29, 30 and 32 being provided to supply oil to the roller bearings shown. Several such units as described above may be arranged in parallel. Specifications 604,171, 604,972 and 610,068 are referred to.
Patent GB-740742-A (GB)
Title: Apparatus for manufacturing artificial skin structures, such as sausage casings, from animal skin material
IPC: B29C48/09
Filed: 1950-09-19
Abstract: <PICT:0740742/IV(a)/1> Apparatus for making tubular films, such as sausage casings, from a plastic dough-like aqueous mass of animal skin fibres comprises a stationary mandrel, one end of which provides the core of an annular extrusion nozzle, and a rotary member surrounding the mandrel and provided with a screw thread for propelling the skin-fibre material through the extrusion nozzle.  In a preferred form of apparatus shown a vertical longitudinal section, the rotary member 1 journalled on a mandrel 4 is provided with a screw thread 12 and is rotated by a driving pinion 3 engaging a toothed flange 10 on the rearward end of the member.  The stationary member 6 is provided with a nozzle 8 and the opposing surfaces of the two members constitute the walls of a chamber 2 leading to an annular extrusion duct between the nozzle 8 and the mandrel 4 provided with an axial duct 5.  The rearward end of the mandrel 4 is rigidly secured to the casing 6.  The mass of fibres is continuously fed through the hopper 7, is taken up by the screw thread 12 of the rotating member 1 and, owing to the conical shape of the casing 6, is fed with increasing pressure into the nozzle 8, from which it is extruded to form a tube.  Compressed air is blown through the duct 5 to prevent collapse of the extruded tube until it has dried sufficiently to retain its shape.  In alternative forms of apparatus: (1) the outer casing may be rotated and may itself be provided with helical screw threads; (2) the feed worm may consist of a multiple screw thread or may comprise a plurality of screw threads of different pitch, positioned end to end, the arrangement being such that the feed pressure on the fibrous mass increases as it approaches the nozzle; and (3) the rotary member may be cylindrical in shape. The apparatus is particularly adapted for the manufacture of very thin walled artificial skin structures.
Patent GB-1114849-A (GB)
Title: A well drill pipe string
IPC: E21B17/07
Filed: 1965-05-31
Abstract: 1,114,849. Boring earth &c. JOY MANUFACTURING CO. 31 May, 1965 [5 June, 1964], No. 23033/65. Heading E1F. In a drill string having a sliding joint adjacent the bit, or fishing tool, the joint comprises a pair of telescopic members arranged for rotation together, the outer member having shoulders forming in conjunction with the inner member an axially extending chamber, the inner member having a piston dividing the chamber into upper and lower portions, and ducts connecting the portions respectively with the interior and the exterior of the string. The inner telescopic member 12 is connected to the drill pipe, and the outer telescopic member 16 carries the bit and has a splined connection 22 with the member 12. The chamber 36 is divided into portions by the piston 43 the upper portion bein connected to the interior of the member 12 by ducts 52, and the lower portion being connected by ducts 42 to the.exterior of the member 16. The splines are immersed in oil maintained at the pressure of the exterior of the member 16 (by ducts 37 and a slidable seal ring 40. When drilling mud is supplied to the bit through the bore 50 the tendency of the joint to extend is reduced or balanced by the construction and the weight on the bit is substantially the weight of the string below the joint. The invention may be applied to a string having reversed circulation, and the bit may be attached to the inner member and the drill pipe to the outer member.
Patent GB-938350-A (GB)
Title: Improved method and apparatus for use in moulding hot water bottles
IPC: B29D22/00
Filed: 1961-06-26
Abstract: 938,350. Moulding hot water bottles. REID NEW ZEALAND RUBBER MILLS Ltd. June 26, 1961 [June 28, 1960], No. 23094/61. Class 87(2). Hot water bottles are made by placing two sheets 22, 23 of rubberised material between co-operating mould plates 1, 2 applying pressure and heat to said plates to unite the edges and inflating the bottle during the curing operation. Each mould cavity is surrounded by a rib 4 which when the plates are closed co-operate with one another to trim and cut the material and seal the edges thereof. A neck forming mould spade 10 may be placed between the sheets of material and the inflatory medium, steam, air or gas under pressure is passed through a tube 13 extending through the spade into the inside of the bottle. A screw threaded insert 15, which forms the interior of the neck portion of the bottle may be screwed to the inner end of the tube 13. Said tube 13 is slidable within the spade so that the insert 15 can be drawn rearwardly into tight engagement with the inner end of the spade, by the sliding action of a plate 17 a cam surface 19 on which engages with a nut 19a fixed on the tube 13. The plate 17 is slid on shafts 16a projecting through slots provided in the plate.
Patent GB-815808-A (GB)
Title: 4-phenyl isonipecotate compounds and their preparation
IPC: C07D211/64
Filed: 1956-07-26
Abstract: The invention comprises compounds of the formula <FORM:0815808/IV (b)/1> (wherein R is hydroxy, alkoxy, chloro, iodo, bromo, nitro, amino or acylamino and R1 is an alkyl radical of 1 to 5 carbon atoms), their acid-addition salts and their preparation by reacting a b -(o-substituted phenyl)-ethyl halide with the appropriate isonipecotate, preferably in the form of an acid-addition salt such as a carbonate or hydrochloride, the acylamino compounds being prepared by acylation e.g. with an acid halide or anhydride, of the amino compounds prepared by this method.  Preferably the reactants are heated together in an inert solvent such as a lower alcohol, advantageously in the presence of an alkali-metal bicarbonate.  In examples: (1) BETA-(o-aminophenyl)-ethyl bromide hydrochloride and ethyl 4-phenyl-isonipecotate carbonate are refluxed in alcohol containing sodium bicarbonate to give, on working up, ethyl 1-(2-aminophenylethyl)-4-phenyl isonipecotate dihydrochloride; (2) the product of (1) is converted to the free base and this is acylated with acetic anhydride in acetic acid to give, on working up, ethyl 1-(2-acetylaminophenylethyl)-4-phenyl isonipecotate hydrochloride; (3) (b -(o-hydroxyphenyl)-ethyl bromide is converted by the method of (1) to ethyl 1-(2-hydroxyphenylethyl) - 4 - phenyl isonipecotate and its hydrochloride; (4) ethyl 1-(2-methoxyphenylethyl) - 4 - phenyl isonipecotate and its hydrochloride are prepared as in (3); (5) ethyl 1 - (2 - chlorophenylethyl) - 4 - phenyl isonipecotate and its hydrochloride are prepared as in (3); and (6) ethyl 1-(2-nitrophenyl ethyl)-4-phenyl isonipecotate and its hydrochloride are prepared as in (3).  Reference is also made to the preparation of other compounds according to the invention wherein R is an acylamino group derived from formic, propionic, butyric, valeric, hexanoic, heptanoic, octanoic, cyclopentanecarboxylic, cyclopentylpropionic, benzoic, toluic and oxalic acids and R1 is methyl, propyl or amyl.  Starting materials.  b -(o - aminophenyl)-ethyl bromide hydrochloride is prepared by reduction of b -(o-nitrophenyl)-ethyl bromide with stannous chloride and hydrochloric acid and is converted to b -(o-hydroxyphenyl)-ethyl bromide by heating with sulphoric acid and sodium nitrite.