baber/WOPTO huggingface dataset:
Patent GB-460834-A (GB)
Title: Improvements in or relating to apparatus for accelerated crystallisation
IPC: B01D9/00
Filed: 1936-09-11
Abstract: <PICT:0460834/III/1> A crystallizer contains a central well 2 up which a screw propeller 4 causes solution to pass, the return flow to complete the circulation taking place down the outside of the well, and the cooled surfaces of the apparatus terminate at a distance from the bottom so as to provide a zone to receive the crystals 9 when formed and collect them outside the range of action of the agitator. The container 1 and well 2 may have jackets 3 and 10 for cooling fluid.  Cooling pipes may be positioned between container 1 and well 2 and in this case the jacket 10 may be omitted.  Cooling jackets may also be arranged in the well 2, and positioned coaxially thereto.
Patent GB-230125-A (GB)
Title: Improvements in furnaces
IPC: F23C99/00
Filed: 1923-10-05
Abstract: 230,125. Gibbons Bros., Ltd., and Marle, M. van, and Walter, C. M. Oct. 5, 1923. Gaseous-fuel furnaces; regenerators. -In a regenerative gas-fired furnace, the heated gas and air for combustion are kept separate until they are burnt above separate converging burner ports, both the gas and air being separately controlled between the regenerator and the burners. Exhaust gases from a working-chamber 18 pass through conduits 19, 20 to regenerator passages 2, Figs. 1 and 3, which alternate with air-heating passages and are bounded by gas-heating passages 5. Valved pipes 8 distribute the gas from the passages 5 to the burners 10. Valve-controlled conduits 13 pass alternately from each of the sets of air passages 1 to the burners. Each burner comprises an open-topped metal box 14 connected to a pipe 8 and refractory open sections 15 communicating with the conduits 13. Fireproof bricks 16 placed above the burners contain three rows of upwardly-converging orifices 17 communicating with the sections 15, 14, 15. In a modification, exhaust gases pass through conduits 37 - - 39, Figs. 8 and 11, to four sets of regenerator passages 40. The gas-heating passages 21<a> communicate by valved pipes 23 with built-in metallic boxes 28 on both sides of the working chamber 36. Air from the passages 29 is collected in a common chamber 30 and passed through valves-controlled passages 31, 33 to openings 35 adjacent the gas-nozzles 28.
Patent GB-1105976-A (GB)
Title: Infra-red radiation detector circuit
IPC: G01J5/28
Filed: 1965-06-11
Abstract: 1,105,976. Infrared detector arrangement. CSF-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. June 11, 1965 [June 22, 1964], No. 24900/65. Heading G1A. An infrared photo-conductive detector e.g. a mercury doped germanium cell (1) Fig. 1 (not shown) is cooled to a very low temperature in an enclosure including a store (5) of liquified gas to limit thermal effects, and a field effect preamplifier (11) for the element output. The element is mounted on a sapphire (6) on the gas container to provide thermal conduction and electrical insulation, and an aluminium screen (7) is included in the exhausted space bounded by an outer container (4). A germanium window (3) in the outer container and an aperture in the aluminium screen permit the passage of the radiation. Potential at point A, Fig. 2 (not shown) between the detector element and a ballast resistor (22) insulating from incident radiation is applied to gate (19) of a fieldeffect device (26) through a capacitor (27) to provide an output across a resistor (30). A signal in phase with a variation at (A) is applied at point (B) to widen the useful frequency band while bootstrapping the plate-grid parasitic capacitance.
Patent GB-674253-A (GB)
Title: Improvements in cloth expanders
Inventor: DAWES WILLIAM ALFRED
IPC: D06C3/00
Filed: 1949-09-29
Abstract: 674,253. Rollers. NORTON & CO., Ltd., Sir J. F. Sept. 20, 1950 [Sept. 29, 1949], No. 24994/49. Class 42 (ii). A cloth expander roller comprises two conical portions a, b interconnected at their small diameter ends by a rubber or like ring e bonded to parts d secured therein. These may be vulcanite bushes which screw into the portions a, b, which may also be of vulcanite. The bushes d, and the caps h which are screwed into the outer ends of the conical portions, are provided with self-lubricating bushes f, i, having curved internal surfaces acting as selfaligning bearings on the expander shaft g.
Patent GB-1354037-A (GB)
Title: Diaphragm pumps
IPC: F04B45/04
Filed: 1972-05-26
Abstract: 1354037 Gas diaphragm pumps E BECKER 26 May 1972 [1 June 1971 15 March 1972] 25047/72 Heading F1N A diaphragm pump 1 operable to produce vacuum or pressure has its inlet 30 and outlet 31 connected to a two-position control valve 50, the valve 50 causing either the evacuated gas or the gas for compression to pass through a crankcase 5 and a silencer S. As shown the valve is positioned so that the pump produces vacuum at a port 52. Thus evacuated gas is pumped through the pumping chamber 8 by the oscillations of a diaphragm 3 by a crank driven connecting rod 2 disposedinthecrank-case 5, conventional inlet and outlet valves 13, 14 controlling the filling and emptying of the chamber 8. The evacuated gas leaves the pumping chamber 8 through a line 63 and is discharged to atmosphere through a line 64, the crank-case 5 and the silencer S. Movement of the valve 50 to its other position causes gas to flow intothe crank-case 5 through the silencer S and thence by lines 64, 60 to the pumping chamber 8. Gas at increased pressure is delivered through the line 63 and the valve 50 to an outlet port 57. The inside of the crank-case 5 is covered with sound absorbing material J.
Patent GB-1192043-A (GB)
Title: A Process for the Purification of Sodium Aluminate Liquors
IPC: C01F7/47
Filed: 1967-05-31
Abstract: 1,192,043. Purifying sodium aluminate. PECHINEY COMPAGNIE DE PRODUITS CHIMIQUES ET ELECTROMETALLURGIQUES. 31 May, 1967 [1 June, 1966], No. 25090/67. Heading C1A. Sodium aluminate liquors, e.g. from the alkaline treatment of bauxite are purified by the addition of freshly prepared manganese dioxide in a quantity such that the resulting suspension contains more than 0À03 gms./litre, generally 0À05 to 1À5 gms./litre and preferably 0À05 to 0À15 gm./litre of manganese, the suspension being substantially free of compounds of manganese with a valency above 4, the solution being filtered to separate therefrom the insoluble compounds formed. The manganese dioxide may be prepared in the solutions being treated by oxidizing with, for example, air, H 2 O 2 , NaClO, KMnO 4  or Na 2 O 2 , a compound of manganese wherein the metal has a valency of less than 4. Alternatively, the dioxide can be prepared separately either by oxidizing a compound of manganese having a valency of less than 4 or by reducing a compound of manganese of valency greater than 4 and added to the aluminate solution. The manganese dioxide is kept in contact with the aluminate solution for preferably between one and a half and four hours at a temperature of 90-105 C. and the resulting suspension is then filtered. Calcium carbonate in amounts of up to 0À3 g./litre may be added. The process may be applied to solutions obtained by decanting the liquor formed in the alkaline treatment of bauxite either before or after filtration to remove the " red sludges." In the examples, aluminate solutions produced from bauxite are heated to 90 C. with stirring for up to 3 hours in the presence of divalent manganese compounds using oxygen or air as oxidant. This results in the removal of 75-90% of the soluble iron and substantially all of the Ti. As is also exemplified, KMnO 4  and MnCl 2  may be reacted together in the presence of 1% by volume of the aluminate solution to give an MnO 2  suspension which is added to the bulk of the solution and treated as above. Similar results are obtained in a shorter time. Alumina may be precipitated from the purified solution by hydrolysis for 96 hours at 50 C. in the presence of dry Al(OH) 3  containing 0À002% Fe 2 O 3  but no Ti.
Patent GB-223723-A (GB)
Title: Improvements in and relating to pillar boxes for use in post offices or other publicplaces
IPC: A47G29/12
Filed: 1923-10-09
Abstract: 223,723. Guilfoyle, J. Oct. 9, 1923. Letter-boxes.-A pillar box 1 for use in public places such as post offices, halls, hotel lounges &c. is combined with a firealarm apparatus 2, a camoperated telephone 3 and coin-freed means 6 for storing and delivering writing material such as stamped envelopes containing note-paper. A writing table 8 illumined by a lamp 9 is also provided, together with anchored pencils or pens and a supply of ink.
Patent GB-1073676-A (GB)
Title: A method of forming cavities in castings
IPC: B22C9/10
Filed: 1966-06-06
Abstract: 1,073,676. Mould and core materials. KARL SCHMIDT G.m.b.H. June 6, 1966 [June 12, 1965], No. 25137/66. Addition to 1,047,239. Heading B3F. A method of forming a cavity in a casting, using a core made from a neutral water-soluble salt such as NaCl or KCl as described in the parent Specification 1,047,239, but wherein up to 10% of one or more salts or mineral substances is incorporated in the core material, to increase the resistance of the core to thermal shock. The additional substances may be borax, magnesium, or talc or a mixture thereof.
Patent GB-1409202-A (GB)
Title: Fluorine-containing organo-phosphorus esters having pesticidal properties
IPC: A01N57/16
Filed: 1973-05-25
Abstract: 1409202 Fluorine-containing pyrimidine phosphates and thiophosphates IMPERIAL CHEMICAL INDUSTRIES Ltd 26 March 1974 [25 May 1973] 25207/73 Heading C2P The invention comprises compounds of the formula wherein X is O or S, Y and Z are C 1 -C 4  alkoxy, R<SP>1</SP> and R<SP>2</SP> are C 1 -C 4  alkyl and R<SP>3</SP> is H or halogen. They are prepared by reacting a compound or an alkali metal salt thereof with a compound of the formula wherein Q is halogen, preferably Cl or Br. The reaction is suitably effected in an inert solvent or diluent and in the presence of a base. The products have pesticidal properties and may be used as active ingredients in conventional pesticidal compositions which may also contain at least one other biologically active agent, e.g. an insecticide or fungicide.
Patent GB-747009-A (GB)
Title: Improvements in thermoelectric elements
Inventor: FAUS HAROLD THEODORE
IPC: H01L35/16
Filed: 1954-08-31
Abstract: A positive thermoelectric element, e.g. for a thermocouple, is composed of 0,01-0,1 per cent Bi and pure Te containing not more than a trace of Cu, Mg, Pb, Bi and Si.  The preferred Bi content is 0,03-0,05 per cent.  The element may be heat-treated at a temperature above the operation temperature to stabilise its electrical characteristics, e.g. at 270 DEG C. for 500 hours or at 175 DEG C. for a longer period, and may be used in combination with a negative element of Cu or constantan or with the negative element described in Specification 684,301 which consists of 63-80 per cent Ag, the remainder Te.
Patent GB-1237886-A (GB)
Title: Layer support for photographic recording layers
Inventor: VERBURG WERNER
IPC: C08G69/48
Filed: 1968-05-28
Abstract: 1,237,886. Paper. AGFA-GEVAERT A.G. 28 May, 1968 [31 May, 1967], No. 25387/68. Heading D2B. [Also in Division G2] A support layer for a photographic recording layer contains as wet strengthening agent one or more water soluble or water dispersible polycondensation and/or polyaddition products having a molecular weight above 1000 and containing at least two groups of the formula: bound to nitrogen atoms in which formula X is O or S, R is H or a C1-C4 alkyl group and R' is a saturated or unsaturated aliphatic radical containing up to 4 carbon atoms, said wet strengthening agent being the product of the reaction between a polymer which contains primary or secondary amino groups and an N-alkoxyalkyl isocyanate and/or N-alkoxyalkyl isothiocyanate, 0.1 to 1 mol of alkoxyalkyl isocyanate being used for every primary and/or secondary amino group in the polymer. Polymers referred to are polyamides, polyamines, polyurethane and polyurea, preferably the support layer contains at least 5% by weight of N-methoxymethyl urea groups. The support layer may be prepared by adding rosin size, alum, TiO 2 , china clay, stearic acid and a 10% aqueous solution of the polymer containing N-alkoxyalkyl urea groups to an aqueous suspension of bleached cellulose and working the pulp into the paper. The wet strengthening agent may be prepared by the method disclosed in Specification 1,139,422. Reference has been directed by the Comptroller to Specification 1,181,367.
Patent GB-878057-A (GB)
Title: Improvements in or relating to slide rules
IPC: G06G1/12
Filed: 1956-07-18
Abstract: 878,057. Slide-rules. BOARDMAN, H., and THORNTON Ltd., A.G. Oct. 8, 1957 [July 18, 1956], No. 25406/60. Divided out of 878,056. Drawings to Specification. Class 106 (1). A logarithmic slide-rule bears special scales to facilitate the solution of cubic equations. The embodiment described is fully disclosed in Specification 878,056 to which reference is made.
Patent GB-278362-A (GB)
Title: Improvements in or relating to explosion or internal combustion engines
IPC: F02M25/06
Filed: 1927-09-27
Abstract: 278,362. Beer, A. C., (Assignee of Mertens, G.). Sept. 28, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. Crank chambers; induction pipes, auxiliary admission devices for. - Gases from the crank chamber are supplied to the induction pipe through a conduit controlled bv a valve which may be,actuated from the accelerator of a motor vehicle.
Patent GB-1392495-A (GB)
Title: Coil bobbin
IPC: H01F27/32
Filed: 1972-05-31
Abstract: 1392495 Transformers TAMURA SEISAKUSHO KK 31 May 1972 [29 July 1971] 25523/72 Heading HIT A coil bobbin comprises a pair of identical coil bobbin members 1, 2 formed of insulating material, e.g. synthetic resin, mounted in bobbin chambers 13, 14 respectively formed on opposite sides of an insulating base 11. The bobbin chambers are formed by integral side walls 17, 18 for the upper chamber and 20 for the lower, the bobbin members being inserted through openings 16 and 19 and being held in position by mating projections 8 and holes 21. An insulating frame 22 is inserted in central axial holes 7 in the members, and the laminated core 27 of silicon steel plates is accommodated in an axial hole 23 in the frame 22. The transformer core is completed by the laminated core member 29. Alternative frames 22 having modified flange 25 and side wall 26 positions may be used.
Patent GB-322246-A (GB)
Title: Improvements in lubricating pumps
IPC: F16N13/14
Filed: 1928-09-05
Abstract: 322,246. Godeke, K. Sept. 5, 1928. Single-acting suctionvalveless pumps; valves, arrangement of; waste liquid, returning. -An oil pump comprises plungers 2, 2' reciprocated by a cam 3, and piston valves 8, 8<1> controlling the delivery ports 11. During the upstrokes of the plungers 2, 2<1> the oil is drawn into the barrels 7 through the ports 5, and during the downstroke it is delivered through the ports 11. The piston valves 8, 8<1> are returned by springs 10. Leakage chambers 19, 20 are arranged round the piston and valves, and are connected by channels 21, 22 to the inlet 5.
Patent GB-731507-A (GB)
Title: Improvements in or relating to thermopiles
IPC: H01L35/34
Filed: 1951-09-17
Abstract: 731,507. Thermo-electric batteries. TURCK, J. Sept. 17, 1951 [Sept. 5, 1951), No. 25561/53. Divided out of 731,429. Class 53. [Also in Group XL (b)] The elements 29, 30 of a thermocouple are connected together at A to form the hot junction and are supported over a large area on semiannular conducting members 27a, 27b forming the ends of two half cylinders 26a, 26b separated from one another and carried by a part 24b of the glass enclosure 21. Leads 31, 32 are connected to the parts 26a, 26b and the enclosure is sealed to a metal ring 23 carrying a window 22 of rock salt, bromide of potassium, iodobromide of thallium or other material transparent to infra-red radiation. To decrease the time constant of the thermocouple a nickel screen 33 is fixed below the junction A. The annular members 27a, 27b form central opening above which the junction A is situated. The opening may be covered by a film 28 of synthetic material to support the thermocouple elements during manufacture, the film being subsequently destroyed. The half-cylinders 26a, 26b may be made by forming a complete cylinder with a circular opening in its base and cutting it vertically into halves.
Patent GB-409022-A (GB)
Title: Improvements in advertising signs and price indicators for shops
IPC: G09F7/06
Filed: 1933-05-18
Abstract: 409,022. Signs. LANDINI, A. E., D. Roque Saen Pena 943, Buenos Aires. May 18, 1933, No. 25595/32. [Class 3 (ii).] A sign or price indicator comprising symbols made of thermoplastic material and having permanently secured thereto prongs for sticking into a backing such as cork is characterized by the symbols being made of two layers stuck together adhesively. The prongs may have flattened or bent heads embedded between the layers in the plastic state, and may be slightly inclined to each other. The base may be of rubber, or rubberized fabric. Specifications 226,860 and 248,094, [both in Class 3 (ii)], are referred to.
Patent GB-591910-A (GB)
Title: Improvements in compressed air or steam operated liquid raising apparatus
IPC: F04F1/06
Filed: 1944-12-21
Abstract: 591,910. Liquid raising apparatus. KIRKLEES, Ltd., and HAMER, T. S. Dec. 21, 1944, No. 25603. [Class 102 (ii)] [Also in Group XXIX] In a compressed air or steam operated liquid raising apparatus as described in Specification 541,953, a closed box D is arranged inside and immediately below the upper cover a of the pressure vessel A, one limb d<1> of a symmetrical U pipe connects with the bottom of the box D and extends inside to within a short distance of the top, the other limb d' is open to the pressure vessel A outside the box D; the raising pipe d' is also open to the inside of the box D as is the delivery pipe a' immediately above it to permit a free flow of liquid between the latter two pipes and also a retarding effect on the U pipe discharge flow, thus ensuring its complete seal until the liquid level in the pressure vessel A reaches the lower end of the pipe d'. Liquid enters the pressure vessel A through the valve E which has on its motion side an annular chamber e' wherein air is trapped to provide a cushion to liquid surge and prevent vibration of the non- return ball valve e.
Patent GB-719600-A (GB)
Title: Fluorescent screens
IPC: G21K4/00
Filed: 1952-10-13
Abstract: A fluorescent screen comprises a sheet support, a layer thereon of particles of a fluorescent material dispersed in a binding medium of mixed cellulose nitrate and a water-insoluble cellulose ether and superimposed on the fluorescent layer, a thin layer of a hydrophobic cellulose carboxylic acid ester of which the ester groups are predominantly acetate.  The fluorescent material may be calcium tungstate, barium lead sulphate mixed crystals, zinc cadmium sulphide mixed crystals, magnesium tungstate and zinc silicate.  The ratio of mixture of binding agents to fluorescent material can be 1:4-50 by weight, the ratio of cellulose ether to cellulose nitrate can be 0.1-3:1 and the thickness of the cellulose ester coating can be 0.002-0.05 mm. The cellulose ether may be a lower alkyl ether of cellulose wherein the alkyl group contains 1 to 7 carbon atoms or may be benzyl cellulose.  Examples of cellulose ethers used are methyl cellulose, ethyl cellulose, benzyl cellulose or mixtures of one or more of methyl cellulose and benzyl cellulose with ethyl cellulose or with each other.  The sheet support may be cardboard to which a solution of cellulose nitrate in ester or ketone solvents, e.g. methyl acetate, ethyl acetate or acetone, can be applied.  The cardboard support can be replaced by other flexible or stiff supports such as plastics, e.g. cellulose derivatives, super polymers, e.g. polyvinyl chloride, polyamides, e.g. nylon and polyesters, e.g. polyethylene terephthalate; aluminium and aluminium alloys.  The sheet supports when composed of plastic materials may contain pigment such as TiO2, ZnO, ZnS and ZrO2, or dyes (list given) in order to make them opaque to light.  A backing coat may be applied to the fluorescent layer and serve as an adhesive layer for the card or plastic sheet support, and may contain any of the foregoing pigments to reduce transmission or increase reflection of the fluorescent light. Suitable adhesives layers are polyvinyl acetate and magnesium oxide-pigmented cellulose nitrate or ethyl cellulose.  The various layers are superimposed on a smooth surface such as a glass plate, the fluorescent material layer including a high boiling point solvent for cellulose acetate, and the adherent layers are then stripped from the surface.  Several high boiling point solvents for cellulose acetate are mentioned, the one preferred being the methyl ether of ethylene glycol monoacetate.  Specifications 1718/39 (as open to inspection under Sect. 91), 538,178, [Group XL], and 623,386, [Group XL (a)], are referred to.
Patent GB-481901-A (GB)
Title: Improvements relating to gauges for use in making up print and for like purposes
IPC: B41B1/00
Filed: 1936-09-21
Abstract: 481,901. Linear - dimension gauges. COMINO, D. Sept. 21, 1936, No. 25616. [Class 106 (ii)] [Also in Group XVI] A gauge for checking alignment, squareness, register &c. in connection with the make-up and arrangement of printer's formes and printed matter, applicable also for checking the squareness of. trimming of paper and card, &c., consists of a cross-ruled sheet 1 of transparent material, such as celluloid, provided at one edge with an abutment having a straight face perpendicular to the surface of the sheet and accurately positioned in relation to the ruling, which may be in pica units. The abutment preferably consists of two ledges 2, 3, one deeper than the other, secured on opposite sides of the sheet. The sheet or the ledges may be provided with further markings, such as scales.
Patent GB-1298296-A (GB)
Title: Process for the preparation of ortho-sulpho-benzimides
Inventor: MOUNIER PAULIN
IPC: C07D275/06
Filed: 1971-04-19
Abstract: 1298296 O-sulphobenzimides RHONE POULENC SA 19 April 1971 [1 April 1970 16 Nov 1970] 25762/71 Heading C2C An aromatic compound containing at least one ortho-sulphobenzimide group is prepared by oxidation of an aromatic compound containing at least one ortho-toluenesulphonamide group, by means of air or molecular oxygen, in the liquid phase in the presence of an oxidation catalyst capable of converting an alkyl aromatic hydrocarbon into an acid by oxidation with air. The catalyst is, e.g. a manganese or cobalt halide or salt of an organic acid.