baber/WOPTO huggingface dataset:
Patent GB-869113-A (GB)
Title: Alkylene oxide-copolymers
IPC: C08G65/08
Filed: 1957-05-28
Abstract: Solid copolymers of more than 50 mol per cent ethylen oxide and less than 50 mol per cent of alkylene or aralkylene oxide are obtained by reacting the two alkylene oxides together in presence of a catalyst which is a carbonate of an alkaline earth metal which is free from ions which interfere with the polymerization and which contains at least 0,01% absorbed water, or is an alkaline earth metal derivate of a mono- or polyhydroxy compound (e.g. calcium methylate, strontium methylate, calcium glycolate) which has been increased in weight by not more than 70% by exposure to carbon dioxide and water.  The polymerization is effected in bulk or in presence of diluents comprising normally liquid saturated hydrocarbons e.g. hexane, heptane, cyclohexane; aromatic hydrocarbons, e.g. toluene, benzene, substituted benzenes, and chlorobenzenes; saturated ethers, e.g. anisole, ethyl ether, butyl ether, glycol ethers.  A hydrocarbon gas, e.g. butane can be used to stabilize the reaction mixture.  Ethylene oxide purified by distillation through a drying agent and an agent for removing CO2 is preferably used.  In Examples (1) a table is given of various proportions of ethylene and propylene oxides, the percentage of propylene oxide ranging from 10% to 80% which are reacted in the presence of 3% of strontium carbonate at temperatures from 93 DEG -110 DEG C. and with reaction periods of 3-60 hours; examples are also given of polymerizing mixtures of ethylene oxide and 2, 3- or 1, 2-epoxy butane, isobutylene oxide, in presence of strontium carbonate, or of polymerizing ethylene oxide and propylene oxide in toluene and butane with calcium glycoxide which has been treated with carbon dioxide and water to increase its weight by 60%. Styrene oxide is also mentioned as a co-monomer.  Specifications 869,112, 869,114, 869,115 and 869,116 are referred to.
Patent GB-401037-A (GB)
Title: Improvements in or relating to string and like holders
IPC: A47F13/04
Filed: 1932-06-15
Abstract: 401,037. Holders for reels of string &c. WALKER, A., 217, Scotland Road, Liverpool. June 15, 1932, No. 16888. [Class 18.] A holder for a reel of string, wire, &c. is made from a single piece of spring wire and comprises a single depending arm b which frictionally engages in the reel passage and is provided at its lower end with means to prevent the reel slipping off, e.g. a doubledover and chamfered portion g, and a further single arm e which presses against the reel to prevent undue delivery of the string. Spring coils c of one or more convolutions may be formed at any point on the holder, e.g. at the junction of arm e with a lateral portion d, the coil shown also serving for the attachment of a suspending cord &c. The arm b may be provided with a flat coil which grips the wall of the reel passage. The lower end of arm e may be curved outwardly ; and the arm may carry a tab or be attached to or associated with a band or sheath encircling the reel, the tab or band bearing advertising matter.
Patent GB-353610-A (GB)
Title: Roofing structure
IPC: E04B7/08
Filed: 1930-05-31
Abstract: 353,610. Roofs. TILS, R., 28, Blaubach, Cologne, Germany. May 31, 1930, No. 16899. Convention date, June 7, 1929. [Class 20 (iv).] Arched roofs consist of smooth metal sheets a joined by riveting or welding to form an independent arched structure of any curvature, and held in shape at the gable ends and, if necessary, at a few intermediate points, by solid sheets b or frames, the usual trusses and purlins being dispensed with. The lower edges c may be stiffened with section iron, and the inner surface may be lined with wood or other heat-protective means.
Patent GB-1139182-A (GB)
Title: Fluid control valves for cryogenic service
Inventor: BUSCHOW HERMAN FREDERIC
IPC: F16K51/02
Filed: 1966-04-18
Abstract: 1,139,182. Valves. HYDROCARBON RESEARCH Inc. 18 April, 1966, No. 16954/66. Heading F2V. [Also in Division B3] A valve for cryogenic service has a valve body 70b of aluminium or an alloy thereof housing a butterfly closure 72 on a stem 76 of e.g. stainless steel. The stem is surrounded by a shield tube 78 also of stainless steel, which is enclosed in a housing known as a "cold box". An operating means, 86 and a valve position indicator 88 are provided whilst 0-rings 90 are located between a stuffing box 92, the stem 76 and tube 78, to prevent the formation of ice on the stem. The tube 78, which is surrounded by insulation, is welded to the body 70b via an aluminium sleeve 80 which is east around the tube 80. The casting process involves cleaning the tube 80, preheating the latter to 500-600 degrees F. and then treating it with a fluoride flux maintained at a temperature of 1000 degrees F. The molten aluminium is passed into a mould and the tube 80 inserted therein; the tube bore may be coated with graphite. The assembly is then air-cooled. In a modification (Fig. 4, not shown), a gland of material e.g. aluminium is interposed between and welded to the sleeve, the gland in turn being welded to the valve body.
Patent GB-1365757-A (GB)
Title: Apparatus for measuring admittance values
IPC: G01R27/02
Filed: 1973-02-27
Abstract: 1365757 Measuring admittance MARCONI INSTRUMENTS Ltd 27 Feb 1973 [13 April 1972] 17019/72 Heading G1U The admittance of an element connected between two terminals 1, 2 is measured by passing a small current from a low impedance A. C. source 3 through it and through the base-emitter circuit of a transistor 6 having a collector load comprising a circuit 11 tuned to the frequency of the A. C. source and a selectable shunt resistor 12, 13, 14, and by measuring 18 the base-collector voltage, which will be an indication of the current through the unknown element and hence of its admittance. The selectable resistors 12, 13, 14 provide three different gains for the transistor, and hence three different measurement ranges. The frequency of the A.C. source may be switched, also, to a lower value, in which case the collector load 11 is retuned by shunt capacitor 17. Since the A. C. source has a low impedance, the arrangement may also be used for measuring the admittance of an element even when it is shunted by a parallel path, providing that an intermediate point in the parallel path is connected to earth 14.
Patent GB-403383-A (GB)
Title: Improvements in making valves with sheet metal bodies
IPC: F16K27/02
Filed: 1932-06-17
Abstract: 403,383. Valve casings &c. BRADLEY, J. W., 20, Waverley Avenue, Warmsworth Road, Doncaster. June 17, 1932, No. 17117. Addition to 374,568. [Class 135.] In valves or cocks built up, according to the parent Specification, from stainless steel or other metal sheet with solid block inserted interior parts, the valve seating S, Fig. 1, is formed integral with the main insert B containing the interior flow passages. The stainless sheet metal " easy-clean " cover Ax is supported on a solid block cap or cover X by a ring G which screws on the cap or cover, a joint with the main shell being made at Z. Where the spindle Y projects beyond the cover Ax it has a stainless metal sheath H. The bottom cap I of stainless sheet metal is welded in position. The two parts of the main shell A are welded together and to the insert B by means of stainless welding strips E, E<1>, Fig. 2, fitting in grooves therein; these strips also serve to prevent seepage of liquid round the periphery of the insert B when the valve is closed. In addition to bibcocks, as shown, similar arrangements of built-up casings are described and shown for pillar cocks with spout and bottom flange integral with main shell or welded thereto. A globe type of valve is also shown having a bottom outlet coaxial with the spindle.
Patent GB-579773-A (GB)
Title: Improvements in or relating to directive antenna systems
IPC: H01Q21/22
Filed: 1943-10-20
Abstract: 579,773. Wave guides ; directive wireless systems. WESTERN ELECTRIC CO., Inc. Oct. 20, 1943, No, 17308. Convention date, June 11, 1942. [Class 40 (v)] A directive system for ultra-high frequency waves comprises a plurality of parallel open-ended wave-guides of different lengths arranged side by side for transmission or reception in an endon direction, their transverse dimensions being critically related to their lengths so that the wave energies are substantially in phase and the transmission or reception is of maximum intensity in the said direction. Figs. 1 and 2 are side and end views of a system using two rectangular guides 5, 6 connected at their inner ends by a tapered guide 3 to the transmitter or receiver 1, and having their outer or open ends 7 displaced a distance f in the direction 9 of wave propagation. The two guides are of the same depth a in the direction of the electric field of the waves, but their widths ba, bn are so related to each other and to the lengths d and d+f of the respective guides that transmitted waves are in phase where they merge in the wave front 11. The Specification describes a system having a large number of rectangular guides, each being half a wavelength longer than its neighbour on one side, and each having the same transverse dimension a. The b dimension is, however, varied from guide to guide in such a way that all waves are in phase at the end of the longest guide (Figs. 4 and 5, not shown). The resultant beam is narrow both in the a and b directions (Figs. 6 and 7, not shown). The guides may be of square or circular section and may be dielectrically loaded. Their lengths may be non-uniformly graded.
Patent GB-1503941-A (GB)
Title: Cholecalciferol derivative and process for preparing it
IPC: C07J9/00
Filed: 1975-04-25
Abstract: 1503941 Vitamin D 3  derivatives WISCONSIN ALUMNI RESEARCH FOUNDATION 25 April 1975 [17 June 1974] 17314/75 Heading C2V The invention comprises 3-deoxy-1α-hydroxycholecalciferol which has vitamin D 3  activity. It is prepared either (a) by converting cholesterol into 3#-hydroxy-5α-cholestan-6-one; converting the 6-one into 6,6-ethylene dioxy-5α- cholestan-3#-ol; oxidizing the ketal to give 6,6- ethylene dioxy - 5α - cholestan - 3 - one; subjecting the 3-one to bromination and then dehydrobromination to give 6,6-ethylenedioxy- 5α-cholest-1-en-3-one; epoxidizing the cholestenone to give ethylenedioxy-1α,2α-epoxy-5½- cholestan-3-one; reacting the epoxy compound with hydrazine to give 6,6-ethylenedioxy-1α- hydroxy - 5α - cholest - 2 - ene; catalytically reducing the 6,6-ethylene-dioxy-1α-hydroxy-5α- cholest-2-ene to give 6,6-ethylenedioxy-1α- hydroxy-5α-cholestane; converting the latter ketal to the corresponding ketone and acetylating the ketone to give 1α-acetoxy-5α-cholestan- 6-one; reacting the acetoxy compound with a hydride reducing agent to give 1α-acetoxy-5α- cholestan-6#-ol; dehydrating the 6#-ol to give 1α-acetoxycholest-5-ene; subjecting the 1α- acetoxycholest-5-ene to allylic bromination and dehydrobromination with trimethyl phosphite to give 1α-acetoxy-5,7-cholestadiene; irradiating the said diene with ultra-violet radiation, to give 3-deoxy-1α-acetoxy precholecalciferol; and thermally isomerizing the 3-deoxy-1α-acetoxy precholecalciferol to give 3-deoxy-1α-acetoxycholecalciferol which is hydrolysed to give 3-deoxy-1α-hydroxycholecalciferol; or (b) by hydrolysing 1α-hydroxycholesterol diacetate to give 1α - acetoxycholesterol; tosylating the 1α-acetoxy-cholesterol to give 1α-acetoxycholesterol-tosylate; reducing the tosylate with a hydride reducing agent to give 1α-hydroxycholest-5-ene; acetylating the 1α-hydroxycholest-5-ene to give 1α-acetoxycholest-5-ene; subjecting the 1α-acetoxycholest-5-ene to allylic bromination and dehydrobromiation with trimethyl phosphite to give 1α-acetoxy-5,7- cholestadiene ; irradiating the diene with ultraviolet radiation to give 3-deoxy-1α-acetoxyprecholecalciferol; and thermally isomerizing the 3-deoxy-1α-acetoxy - precholecalciferol to give 3 - deoxy - 1α - acetoxycholecalciferol which is hydrolysed to give 3-deoxy-1α- hydroxycholecalciferol. Examples are given.
Patent GB-599156-A (GB)
Title: Improvements in or relating to weighing machines
IPC: G01G3/04
Filed: 1945-07-06
Abstract: 599,156. Weighing-machines. PRECISION ENGINEERING CO. (READING), Ltd., and BROWN, A. July 6, 1945, No. 17328. [Class 143] A weighing-machine comprises a hollow support or casing, a spindle extending thereinto through a bearing and having means for supporting a scale pan, a sliding member connected to. the spindle and having one or more arms connected by springs to the support or casing and means for indicating an applied load, said bearing comprising a ball or roller bearing having provision for axial movement between the balls or rollers and the support or casing as well as between the balls or rollers and the spindle, The casing 11 carries bearings 12, 13 in which are slidably mounted spindles 14, 15 on the slidable frame 16 which carries arms 17, 18 connected to the casing wall by springs 23, 24. Each spindle is fitted with a ball cage 19, Fig. 3, which may move axially with the spindle in its bearing. Movement is limited by spring rings 21 fitted into grooves 20 in the bearing. The spindle 14 may project to carry a scale pan 22 or the spindle 15 to carry a hook for the load. Two rounded pins, balls or rollers 27 mounted on the frame 16 or casing 11 contact with a machined surface on the casing or frame to prevent twisting of the frame. The bearing 13 may have a dashpot or shock absorber. A pointer on or actuated by the frame co-operates with a calibrated scale.
Patent GB-1267820-A (GB)
Title: Method of and apparatus for initiating a gas scarfing process of a metal workpiece
IPC: B23K7/06
Filed: 1969-04-03
Abstract: 1,267,820. Scarfing. AGA AB. 3 April, 1969 [16 May, 1968], No. 17474/69. Heading B3V. The gas scarfing of a workpiece 6 is initiated by moving, during the relative movement between the workpiece and a scarfing nozzle 7, a consumable electrode 3 towards the workpieee to form a molten pool on the workpiece surface, which pool has a sufficiently high temperature to be ignited by the scarfing oxygen. Just before a defect 8 is reached by the scarfing nozzle 7, the start button of the machine is actuated to cause the electrode 3 to be fed into contact with the workpiece immediately in front of the defect 8. Simultaneously an electric current is supplied to the electrode 3 and an electrode holder 1 pivoted about a pivot 2 towards a vertical position at a speed proportional to the relative velocity between the scarfing nozzle 7 and workpiece. A pool of molten metal is thereby formed on the workpiece surface. When the holder 1 has reached the vertical position, the electrode feed is stopped, the scarfing oxygen stream is initiated and the holder 1 rapidly returned to its initial position. The workpiece is preheated by heating flames 9. The machine may include a plurality of gas burners 7 having corresponding electrodes 3. Suitable electrical control circuits are disclosed (Figs. 2 and 3, not shown).
Patent GB-348910-A (GB)
Title: Process for the production of artificial silk yarn of diminished lustre
IPC: C08L1/24
Filed: 1930-06-06
Abstract: In the manufacture of viscose solutions in which an immiscible dulling agent, which undergoes little or no saponification, has been emulsified, the emulsifying agents employed are the derivatives obtainable from saturated or unsaturated hydroxy fatty acids by the elimination of water.  A suitable emulsifying agent is prepared by heating ricinoleic acid to 100 DEG  C. or more, preferably in the presence of sulphuric acid.  The dulling agent, which may be an unsaponifiable oil or wax or a hydrocarbon, may be emulsified in the viscose or added thereto as a preformed emulsion.  The use of paraffin oils, hydroaromatic hydrocarbons and chlorobenzene as dulling agents is referred to.ALSO:In the manufacture of artificial silk of reduced lustre by spinning viscose in which an immiscible dulling agent, which undergoes little or no saponification, has been emulsified, the emulsifying agents employed are the derivatives obtainable from saturated or unsaturated hydroxy fatty acids by the elimination of water.  A suitable emulsifying agent is prepared by heating ricinoleic acid to 100 DEG  C. or more, preferably in the presence of sulphuric acid.  The dulling agent, which may be an unsaponifiable oil or wax or a hydrocarbon, may be emulsified in the viscose or added thereto as a pre-formed emulsion.  The use of paraffin oils, hydroaromatic hydrocarbons and chlorobenzene as dulling agents is referred to.
Patent GB-216003-A (GB)
Title: Improved multiple cylinder engine
IPC: F01B1/06
Filed: 1923-07-06
Abstract: 216,003. McAlister, R. K. July 6, 1923. Driving-gear.-In an engine of the kind described in Specification 175,914, in lieu of ball- and-socket joints, the pistons 1 carry rockers 5 carrying balls or rollers 3a which engage the eccentric track which may also be mounted on balls or rollers 8.
Patent GB-619757-A (GB)
Title: Improvements in or relating to machine guns, automatic cannon or the like
IPC: F41A1/04
Filed: 1940-12-12
Abstract: 619,757. Automatic guns. GABLER, J., and GRAYBLER CORPORATION (ENGLAND), Ltd. Dec. 12, 1940, No. 17614. Addition to 619,665 and 619,756. [Class 92 (ii)] Relates to belt-fed automatic guns in which shells x are fired by an explosive gaseous charge as in the parent Specification and having twin barrels 1 with conjugated loading plungers 8 as in Specification 619,756. According to the present invention, instead of using electric sparking-plugs, the firing is effected by incandescent filaments, pilot flames, or like simple ignition means A. In the form shown, the ignition openings 3 leading to the firing chambers 2 are only uncovered by the loading plungers when these reach the firing position.
Patent GB-568835-A (GB)
Title: Improvements in air filters
IPC: B01D46/10
Filed: 1943-10-26
Abstract: 568,835. Air filters. HOLT, S., and WARD, C. V. Oct. 26, 1943, No. 17636. [Class 8 (ii)] Air to be cleaned passes directly through one part of a filter screen a cooperating with a wiper e moving relatively overits surface, either the screen or the wiper being revolved, and a portion of the screen lies in a dead space wherein the extracted dust, fluff, &c. falls by gravity and from which it is removed by a rotary sealed valve &c. The wiper and the valve may be driven in unison. The Provisional Specification states that the flow of air may .drive the screen through an impeller.
Patent GB-890510-A (GB)
Title: Rotary fluid-pressure engines
IPC: F04C2/32
Filed: 1958-06-03
Abstract: 890,510. Rotary engines and pumps. COTE, M. C. D., JACOBS, A. J., and JACOBS, P. C. June 3, 1958 [June 7, 1957], No. 17658/58. Class 110 (2). The pump or engine has a gyratory piston 38 and inner and outer working chambers B, A, an abutment 74 (Fig. 2) separating the inlet and outlet ports. Fig. 3 shows two units 14, 16, a dividing plate 110, and pistons 38, displaced by 180 degrees for balancing purposes, supported on bearings 46. Eccentrics 52, carried by a shaft 30, actuate the pistons, each of which has a sliding fit with the chamber end walls and a central core 36. The abutment 74, pivoted on pins 86, has lateral portions 72 which overlie the outer peripheries of the piston 38, packing elements 75 in slots 73 being in sealing engagement with arcuate recesses 81, Fig. 1A (not shown), on support plates 44. Guide surfaces 82, secured to the core 36, slide on the abutment. Packings 90, 94 are provided. Leakage fluid from the various working parts collects in a chamber 111, passes through ducts 112, 114 and is removed by a gear pump 116, 118 and 122 (Fig. 4, not shown). In another arrangement, Figs. 21, 22, the apparatus has a control working chamber 196 with a ring-piston 196, a second chamber 198 with a piston 194 and a third chamber 208 having a ring-piston 206. The core 182 may be splined to the central shaft 176, or rotate freely thereon. Eccentrics 180, for actuating the pistons through bearings 184, are splined to the shaft 176. The abutments 240 and 246, in the three working chambers are fixed to the casing parts and the pistons have blocks 264 which slide up and down the abutments as the pistons gyrate. A number of inlet and outlet, valvecontrolled ports 308, 310, 312; 323, 324, 326, Fig. 20 (not shown), are connected to the working chambers, and by-pass valves 344, handcontrolled arranged between each pair of inlet and outlet ports allow cutting out of one or more working chambers.
Patent GB-410333-A (GB)
Title: Method for the preparation of briquettes from fuel in a finely divided state
IPC: C10L5/14
Filed: 1933-06-21
Abstract: 410,333. Agglomerating fuel. RUDEMAN, L., 20, Meezenplein, The Hague. June 21, 1933, No. 17716. Convention date, Oct. 31, 1932. [Class 50.] Finely divided fuel such as anthracite coal or lignite dust, cokes, peat, wood, bagasse, residues from the olive-oil industry, &c., is mixed with rice meal, potato flour, sorghum, maize, or other fecula-containing substance and a substance such as phenol to prevent fermentation, the resultant mass being heated by superheated steam at about 300‹ C. and briquetted. The briquettes may be treated with a waterproofing agent, e.g. soap and alum, aluminium acetate, or latex. A mixture of hydrocarbons, anthracene oils, phenols and tar distillation products with or without a small amount of zinc chloride and known as carbolineum may be used to prevent fermentation. Reference has been directed by the Comptroller to Specification 205,865, [Class 50].
Patent GB-613260-A (GB)
Title: Improvements relating to the production of phosphate coatings on metals
IPC: C23C22/86
Filed: 1946-06-13
Abstract: In a process for producing phosphate coatings on ferrous, zinc and other metallic surfaces in which the surfaces are treated with a solution of a primary orthophosphate which dissociates in aqueous solution to form an equilibrium mixture of phosphoric acid with primary, and more basic, phosphates, the solution is heated immediately before and during the coating treatment to produce a condition of supersaturation and treatment of metallic surfaces is interrupted from time to time while the solution is regenerated to maintain a condition of supersaturation by cooling the whole solution or a portion withdrawn from the solution and treating it to increase its content of phosphates more basic than the primary salt and reheating it prior to continuing the treatment.  The coating may be effected by immersion or spraying and accelerators may be used.  The solution, or the portion withdrawn from the solution, may be subjected to oxidation to remove oxidizable by-products of the process.
Patent GB-185885-A (GB)
Title: Improvements in and relating to feeding and drinking appliances for poultry and the like
IPC: A01K39/00
Filed: 1921-06-30
Abstract: 185,885. Murdoch, J. H. Burn-. June 30, 1921. Feeding and drinking appliances for animals.-A grid for use with poultry feeding and drinking appliances comprises two horizontal bars 1 spaced apart by transverse bars 2 extended at one end to form legs for the frame to rest on slantwise across the mouth of the trough, Fig. 7. The bars 1 are provided with a number of irregularly spaced holes 6, Figs. 1, 3 and 4, and into selected ones rods 9 are placed to form the desired sized mesh, any spare rods being housed in empty holes on the bars not lying within the desired aperture. The lower bar 1 may be slidingly mounted on the transverse bars 2. The grid may be supported on the ledge 12 of one of a number of boards 13 fitting in vertical slots in the edges of the trough.