baber/WOPTO huggingface dataset:
Patent GB-1079410-A (GB)
Title: Process for preparing bismuth subnitrate
IPC: C01G29/00
Filed: 1966-06-29
Abstract: Bismuth subnitrate 5 (BiO.NO3).BiO.OH.4H2O is prepared by electrolysing an aqueous solution of an inorganic nitrate, e.g. 10-40% by weight of an alkali metal or ammonium nitrate, maintained at a pH in the range 1 to 7 by adding HNO3 using a Bi anode and recovering the subnitrate deposited at the anode; the cathode may be of stainless steel. The process may be operated continuously, the subnitrate precipitated from the anode being withdrawn in a stream of electrolyte from the electrolysis vessel, and after filtering recycling the electrolyte, regenerated and heated if necessary, to the vessel.  A prior process is disclosed using an electrolytic cell having a Bi anode, Ni cathode, and separate NaNO3 anolyte and NaOH catholyte, wherein bismuthyl nitrate is electrolytically formed.
Patent GB-648037-A (GB)
Title: Improvements relating to the production of hollow glass articles
IPC: C03C27/06
Filed: 1948-11-10
Abstract: 648,037. Glass. BRITISH THOMSONHOUSTON CO., Ltd., DALE, A. E., and STANWORTH, J. E. Nov. 10, 1948, No. 29236. [Class 56] Two glass parts are sealed together by applying to at least one of them a vitreous material which softens within the annealing range of the glass. The parts are then assembled and annealed, the heat of the annealing simultaneously effecting the sealing. The two glass parts may be the parts of a hollow glass brick or they may be the panes and spacers of a double window and the vitreous sealing material which may be applied in the form of a powder may be the borate glass described in Specification 634,548.
Patent GB-825899-A (GB)
Title: Improvements in and relating to enclosed spark gaps
Inventor: WESTLEY KENNETH HAROLD
IPC: H01T2/02
Filed: 1957-09-17
Abstract: 825,899. Spark apparatus. ERICSSON TELEPHONES Ltd. Aug. 15, 1958 [Sept. 17, 1957], No. 29304/57. Class 39(1). An enclosed spark gap comprises an envelope containing a reducing or inert gas and having two tubular electrodes sealed through the wall thereof, the inner end of each electrode being domed to form a discharge surface and the discharge surfaces being spaced apart to form a spark gap. In the manufacture of the spark gap shown two glass collars 15 are sealed on to two tubular electrodes 11 and 12 of an iron alloy, a. glass sleeve is then fused to the two collars to form the envelope 10. The envelope is exhausted through an aperture 16 in the wall of electrode 11 by means of a pump attached to a length of glass tubing 24 which is fused to electrode 11, and is then filled with hydrogen at a pressure of 500 mm. of mercury and the tubing 24 closed to form a seal 17. An auxiliary electrode 18 of iron alloy wire surrounded by a ceramic sleeve 20 is shown projecting through an aperture in the domed end of electrode 12, but may be omitted, in which case no aperture is provided.
Patent GB-857759-A (GB)
Title: An electromagnetic force measuring device
IPC: G01L1/12
Filed: 1957-09-18
Abstract: 857,759. Measuring electrically. VYZKUMNY A ZKUSEBNI LETECKY USTAV. Sept. 18, 1957 [Sept. 20, 1956], No. 29379/57. Class 40 (1). In a force measuring device comprising a hollow ferromagnetic core 1 which carries an A.C. energized coil 5 linked through its bore and a pick-up coil 6 coaxial with the core, the force to be measured is applied between yokes 4 to transmit, via strips 3, two torques in opposite directions to shafts 2 at the ends of the core, thus twisting the core and inducing a signal proportional to the force in the coil 6 which is connected in a measuring circuit. The coils 5, 6 may be enclosed in a magnetic case 7, and their functions may be interchanged. The device may be used for measuring or control in weighing apparatus and for measuring tension.
Patent GB-281247-A (GB)
Title: A process for the manufacture and production of motor fuels
IPC: C10G1/00
Filed: 1927-11-03
Abstract: 281,247. I. G. Farbenindustrie Akt.- Ges. Nov. 26, 1926, [Convention date]. Hydrogenation, destructive.-Motor fuels having " anti-knock " properties are obtained by the destructive hydrogenation of highly bituminous coals by extracting the bitumen before or during the treatment. The bitumen may be extracted before the hydrogenation by solution in benzene or the bituminous coal mav be destructively hydrogenated to a slight extent and the bituminous constituents removed from the middle oils obtained by cooling, the oils being then further converted into benzine.
Patent GB-1116630-A (GB)
Title: Refining esters of polyhydric alcohols
IPC: C07H9/04
Filed: 1965-07-12
Abstract: In a process for refining esters using a wash solvent, the esters, prepared by a transesterification reaction between a polyhydric alcohol (4-18C), with at least 4 hydroxy groups and a M.P. of at least 85 DEG  C. and an ester in which the acid moiety contains 4-32C, and containing no more than 2 oxygen atoms in addition to those in the carboxy group, are admixed with not more than 20% of a reaction solvent and up to 50% of an oxygenated polar organic solvent as fluxing agent, then washed by dispensing in the following solvents (A) (i) alkanols boiling below 120 DEG  C., (ii) dialkyl ketones boiling below 120 DEG  C., (iii) dialkyl ethers (up to 7C), (iv) esters of alkanols with fatty acids (up to 6C in the ester); (B) water; (C) alkane hydrocarbons (BP-45 DEG  to 115 DEG  C.); (D) substantially neutral aqueous solutions of at least one soluble salt of sodium, potassium, calcium, or magnesium and hydrobromic, sulphuric, nitric, phosphoric or pyrophosphoric acids, to separate an ester productrich phase from a solvent-rich phase.  The polyhydric alcohols may be sucrose and raffinose, mono-, di- or tripentaerythritol, xylitol, sorbitol, mannitol, lower alkyl glucosides and acetyl glucosamine, N-urea glucoside and N,N-urea diglucoside and esters treated in the examples are sucrose monotallowate, cocoate, esters of olive oil fatty acids and rape seed oil acids, mono-stearate, ester of hydrogenated tallow, oleate and salicylate and disucrose adipate; sorbitol caprate, behenate, ester of hydrogenated cotton-seed oil acids, palmitate, and salicylate; xylitol ester of herring oil; raffinose palmitate; mannitol caprylate, stearate, and myristate; methyl glucoside oleate; arachidate ester of a -methyl glucoside; erythritol salicylate; napthenic acid esters of a -methyl glucoside and sucrose; and raffinose stearate.
Patent GB-688127-A (GB)
Title: Improved control fittings for the ends of cycle handle bars
IPC: B62K23/06
Filed: 1949-11-18
Abstract: 688,127. Handlebar control mechanism. CAMILLIS, L. Nov. 14, 1950 [Nov. 18, 1949] No. 29516/49. Class 136 (i) A gripping plug 4 is mounted in the end of a cycle handle bar tube 1 and comprises co-operating parts 4a, 4c fitting together with an inclined plane engagement at 6, a bolt 5 passing axially through the two parts 4c, 4c being screwed into a nut 5a to cause the part 4a to traverse the plane 6 and frictionally fix the plug in the end of the tube 1, an external cable 8 being operable by a cam lever 3 pivoted at 3a to a bracket 2 which is integral with the part 4c of the plug.
Patent GB-745315-A (GB)
Title: Improvements in or relating to anamorphotic optical systems
IPC: G02B13/10
Filed: 1953-10-27
Abstract: 745,315. Optical systems. COLEMAN, K. R., and TAYLOR, TAYLOR & HOBSON, Ltd. May 4, 1954 [Oct. 27, 1953], No. 29675/53. Class 97 (1). An anamorphotic system for a projector or photographic camera comprises two refracting prism pairs, each formed of two prisms cemented together with their apices printing in opposite directions, so arranged that the apices of the inner prism elements both point to the same side of the optical axis and an axial ray incident in the system from the front is deviated away from the apices of the inner prism elements by the first prism pair and towards them by the second, the portion of such axial ray within each prism element being inclined to the normal to the cemented surface at an angle which exceeds by at least 5 degrees the angle between such ray portion and the normal to the air-exposed surface of the prism element, and the AbbÚ V number of the rear prism element of each pair exceeding that of the associated front prism element by at least 10. Fig. 3 shows the system applied to the projection on the plane E of an image on a film in plane D by means of an objective C and a collimating system B. The two prism pairs A<SP>1</SP> A<SP>2</SP>, A<SP>3</SP> A<SP>4</SP> are arranged as shown to vary the size of the image in the plane of the Figure but to have its size in the plane perpendicular thereto unchanged. The size of the image in the plane of the Figure may be varied by rotating the two prisms about axes parallel to their apices. The prisms may be linked by gearing, belt and pulley or mechanical linkage so as to be rotated simultaneously through such angle as to maintain the abovementioned conditions as regards the axial ray. The system is used in reverse for photography. The prisms may be approximately achromatized in one position of adjustment. Numerical data are given for two examples of the prism system shown.
Patent GB-727337-A (GB)
Title: Machine for orienting and dispensing stamped metal lock nut blanks
IPC: B65G47/14
Filed: 1952-11-25
Abstract: 727,337. Orientating blanks. THOMPSONBREMER & CO. Nov. 25, 1952 [Nov. 30, 1951], No. 29761/52. Class 78 (1). Drum 22 comprises longitudinal slots 49 fitted with spaced pins 50 so that when the drum is rotated a lock nut blank which has its base downwards will strike a pin and be checked, whilst a blank which has its base upwards will pass the pin and be discharged. As shown, the blanks are introduced through conduit 46 into the drum and the correctlyplaced pins pass out of the slots and slide down the broad duct 69 formed between the rotating drum and its stationary surround 24 and are then canalized into a narrow sloping duct (not shown) by funnel-shaped channel 79, there being provided a rotary finger 81 (not shown) which agitates the blanks as they enter the narrow channel. Specifications 561,547, [Group XXV], and 561,582, [Group XXII], are referred to.
Patent GB-602669-A (GB)
Title: Improvements in apparatus for generating harmonic frequencies from an alternating current supply
IPC: H03B19/10
Filed: 1945-11-08
Abstract: 602,669. Generating high-frequency oscillations. SOC. ANON. DE TELE-COMMUNICATIONS. Nov. 8, 1945, No. 29798. Convention date, Aug. 6, 1942. [Class 40 (v)] A frequency multiplier comprises a modulator having a feedback circuit from output to input, and which is supplied with the fundamental frequency and also a frequency which is equal to or double the fundamental, to produce either the complete series of harmonics, or odd harmonics only, respectively. The Figure shows a bridge rectifier modulator circuit 22<1>, 33<1> connecting the secondary winding 7 of transformer 1 to the primary winding 8 of transformer 4. The fundamental frequency is applied to the primary of transformer 1 and also to bridge rectifier circuit 9 which acts as a frequency doubler. The output from circuit 9 is applied through filter 13 to the centres of coils 7 and 8. The output from transformer 4, which comprises the sum and difference frequencies of the frequencies fed into the bridge rectifier circuit, thus includes the third harmonic of the fundamental frequency. Part of the output from transformer 4 is fed back to the input of transformer 1 by means of amplifier circuit 10, 11, 12, which results in the production of the 5th and thus other odd harmonic frequencies in the output circuit of the modulator. To obtain the complete series of harmonic frequencies, the frequency doubler circuit 9 and filter 13 is disconnected by means of a switch (not shown), so that the fundamental frequency is applied also to the centres of coils 7 and 8. The amplifying feedback circuit may comprise a circuit tuned to the fundamental frequency.
Patent GB-1177661-A (GB)
Title: Vehicle Rear View Wing Mirror.
Inventor: ZIEROLD WALTER
IPC: B60R1/06
Filed: 1967-06-28
Abstract: 1,177,661. Vehicle mirrors. FORD MOTOR CO. Ltd. 28 June, 1967, No. 29805/67. Heading B7J. An external rear view driving mirror comprises a universally mounted mirror head 3 having a part-spherical portion 13 frictionally engaging a spring-urged washer 29 supported on a pin 19 readily detachably secured in a support stem 1, and frictionally engaging an adjusting nut 31 screwed on to the stem 1, the nut 31 being accessible when the mirror is fitted to a vehicle. The pin 19 is detachably secured in the stem 1 by a lock-pin 37 passing through the pin 19 and screwed into the stem, and is angularly located in the stem 1 by its non-cylindrical bore 7 (Fig. 3).
Patent GB-963242-A (GB)
Title: Fishing rod stands or rests for use by anglers
IPC: A01K97/10
Filed: 1962-08-03
Abstract: 963,242. Anglers rod-rests. K. ABBISS. June 28, 1963 [Aug. 3, 1962], No. 29846/62. Heading A1A. A fishing rod rest comprises a telescopic stem 12 having a ground engaging spike 14 and a forked bracket 10, an arm 15 pivoted to the stem and a hooked abutment 16 pivoted to the free end of the arm 15. The fishing rod is supported in the forked bracket 10 and is arranged so that its weight causes its butt end to engage under the hooked abutment 16. The arm 15 is pivoted to a sleeve 21 slidable on the stem. Clamping screws 22, 18, 19 hold the sleeve 21, the arm 15 and the hooked abutment 16 in position.
Patent GB-417899-A (GB)
Title: An improved magnifying glass or microscope
IPC: G02B25/00
Filed: 1933-10-27
Abstract: 417,899. Viewing-apparatus. RAPHAEL, O. P., 57A, Hatton Garden, London. Oct. 27, 1933, No. 29864. [Class 97 (i).] An apparatus for viewing specimens comprises a casing a which is preferably cylindrical and made of casein or a synthetic resin, is closed at one end by a lens b, and is provided at the other end with a removable cap c, a partition d being arranged intermediate of the length of the casing. The partition d and part or the whole of the cap c are formed of glass. The specimens, which may float on liquid, are placed in the chamber between the partition and cap. Large holes e for the admission of light are formed in the wall of the casing beneath the partition d and smaller holes f for the admission of air are formed in the periphery of the cap and the upper part of the casing.
Patent GB-926272-A (GB)
Title: Self emptying nozzles for extrusion machines
IPC: B30B11/22
Filed: 1959-09-01
Abstract: 926,272. Extrusion machines. J. GARVEY. Sept. 1, 1959, No. 29864/59. Class 87(2). To facilitate easy cleaning an extrusion nozzle 5 having a decreasing cross section from its entry end, where it forms a pressure tight joint with a cylinder 2, to its exit end consists of at least two longitudinally divided segments 6, 7, hingedly connected to the cylinder 2, with removable fastening means 24 to maintain the segments 6, 7 in operative engagement. The means 24 may be a threaded boss bearing on frusto-conical surfaces 34, removal of the boss and running of the machine causing the segments to open on their hinges 16, 17. A die may be attached to the end 33 of the segments, a filter plate may fit into grooves 30 in the segments and the segments may be heated by a heater 27 and heating or cooling channels 28, 29 are provided.
Patent GB-922059-A (GB)
Title: Manufacture of shaped articles
IPC: B29C44/58
Filed: 1960-08-30
Abstract: A polyurethane is made by stirring 38 parts of a 80:20 mixture of tolylene-2:4- and 2:6-diisocyanates with a mixture of 100 parts of a condensate of glycerol and propylene oxide and 0,25 parts of N:N-dimethylbenzylamine and the mixture kept in an atmosphere of dry nitrogen for 24 hours.  To 100 parts of the polymer formed are added 4,72 parts of a mixture of N:N-dimethylcyclohexylamine, ricinoleic acid, water and a polydimethylsiloxane, and the mixture poured into a mould, allowed to expand for 5 minutes and heated at 120 DEG C. for 5 minutes.  The final stages of the reaction may be carried out in the presence of a curing agent, e.g. sulphur or dicumyl peroxide. Surface-active agents, e.g. oxyethylated phenols, fatty alcohols such as oleyl alcohol or sulphated dimethyloleate, polyalkylsiloxanes, and copolymers thereof with polyalkylene oxides, flame-retardants such as b -trichloro-ethyl phosphate, and antimony oxide, plasticizers such as tricresyl phosphate and dioctyl phthalate, antioxidants, e.g. tert.-butyl-catechol and sterically hindered phenols, and colouring matter and fillers such as carbon black and silica may be added.  A catalyst may be used, e.g. amines, carbonates or other salts of weak acids and alkali or alkali earth metals and organo-metallic compounds from, e.g. tin and lead.  Other catalysts, e.g. soluble organic compounds of metals such as iron and manganese acetyl acetonate, tin dilaurate and stannous octoate.ALSO:Polyurethane which may be foamed is moulded in a mould having at least a lining of polypropylene.  A polyurethane is made by stirring 38 parts of a 80:20 mixture of tolylene-2: 4- and 2:6-diisocyanates with a mixture of 100 parts of a condensate of glycerol and propylene oxide and 0,25 parts of N:N- dimethylbenzylamine and keeping the mixture in an atmosphere of dry nitrogen for 24 hours.  To 100 parts of the polymer formed are added 4,72 parts of a mixture of N; N-dimethylcyclohexylamine, ricinoleic acid, water, and a polydimethylsiloxane, and the mixture poured into a mould, allowed to expand for 5 minutes and heated at 120 DEG C. for 5 minutes.  The final stages of the reaction may be carried out in the presence of a curing agent e.g. sulphur or dicumyl peroxide. Surface-active agents e.g. oxyethylated phenols, fatty alcohols such as oleyl alcohol or sulphated dimethyloleate, polyalkylsiloxanes, and copolymers thereof with polyalkylene oxides, flame-retardants such as b -trichloro-ethyl phosphate, and antimony oxide, plasticizers such as tricresyl phosphate and dioctyl phthalate, antioxidants e.g. tertbutyl-catechol and sterically hindered phenols, and colouring matter and fillers such as carbon black and silica may be added.  A catalyst may be used e.g. amines, carbonates or other salts of weak acids and alkali or alkali earth metals and organo-metallic compounds from e.g. tin and lead.  Other catalysts, e.g. soluble organic compounds of metals such as iron and manganese acetyl acetonate, tin dilaurate and stannous octoate.
Patent GB-311249-A (GB)
Title: Improvements in or relating to apparatus for treating gases with liquids
IPC: H03G3/22
Filed: 1927-11-08
Abstract: 311,249. Chemical Engineering & Wilton's Patent Furnace Co., Ltd., Wilton, N., and Wilton, T. 0. Nov. 8, 1927. Treating gases with liquids.-Apparatus comprises a series of chambers each consisting of an upper space 2 in which liquid is sprayed, a central space containing bundles of vertical loose tubes 5 inside which are placed twisted strips or helical elements imparting a circular motion to the liquid inside the tube, and a lower. liquid collecting space 7. The gas enters each upper compartment 2 through an aperture 1, flows downwardly through the central space together with the liquid and passes to the succeeding chamber through an uptake 8. A liquid circulating pump is provided for each chamber and overflow pipes are arranged between the liquid collecting compartments 7 to effect a general flow of liquid through the apparatus counter to that of the gas. Coal gas may be treated with oils or water and chemical liquids to extract ammonia, benzol, naphthalene or water vapour.
Patent GB-1264065-A (GB)
Title: A method and an apparatus for retreading a vehicle tyre
Inventor: EDLER B
IPC: B29D30/58
Filed: 1970-06-19
Abstract: 1,264,065. Retreading tyres. B. EDLER. 19 June, 1970 [17 July, 1969], No. 29932/70. Heading B7C. A tyre is retreaded by disposing a prevulcanized endless tread band and disposing it around and spaced from the buffed periphery of the tyre, evacuating the air from the space between the band and tyre, bringing the band into contact with the tyre and vulcanizing it thereto. An apparatus for such retreading comprises a vessel 2 having an airtightly fitting lid 3 and housing eight tread band grippers 8. Each gripper is mounted on a respective cylinder 39 which is displaceable radially of the vessel along a fixed piston 36 having a rod 35 with axial bores 38, 38<SP>1</SP> communicating via bores 40, 43 with interiors 41, 42 of the cylinder, to allow hydraulic fluid to pass for effecting the displacement. The grippers each comprise hooks 47, 48, 47<SP>1</SP>, 48<SP>1</SP> of adjustable separation for engaging a tread band. A pivoted crane arm 4 having a carrier 17 and grippers 18 is used to position a prevulcanized tread band 60, coated with unvulcanized rubber on its inner surface, in the vessel to be retained by the hooks 47, 48, 47<SP>1</SP>, 48<SP>1</SP>. The grippers 8 are moved outwards to stretch the band radially, and a split rim 30 fitted with the inflated tyre 6 is then positioned, by means of the crane arm 4, on a sleeve 26 rotatably mounted on a mandrel 7 within the vessel 2, to leave a space between the band and the tyre. With the lid 3 fitted, air is evacuated from the vessel including the said space, the grippers 8 are moved inwards to allow the band to contract on to the tyre and are then withdrawn. A driven roll 9 is swung into contact with the tread and driven to rotate the tyre and rim about the mandrel 7 and press the band into contact with the tyre. The tread and tyre are subsequently transferred to an autoclave (not shown) to vulcanize the rubber coating.
Patent GB-283143-A (GB)
Title: Improvements in or relating to cylinder piston units especially those for internal combustion engines
IPC: F02F3/00
Filed: 1927-11-08
Abstract: 283,143. Birkigt, M. Jan 5, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Pistons; cylinders.-In an internal - combustion engine, or pump &c. the bearing surfaces of the piston, or of the cylindder, or both are, treated by the cementation process. The piston preferably comprises a head portion b, to which is attached a thin skirt c having bearing bands at its upper and lower ends.
Patent GB-136812-A (GB)
Title: Improved Detachable Wheel for Vehicles and Manipulating Tool therefor.
IPC: B60B3/18
Filed: 1919-12-02
Abstract: 136,812. Compagnie d'Applications MÚcaniques. Dec. 17, 1918, [Convention date]. Locking nuts. - The nut e for securing a wheel hub a on an axle sleeve b is locked by a bolt g protruding under spring pressure through a hole e<2> in the nut and having an arm g' passing through another hole and carrying a tooth g<2> or small toothed quadrant which engages the teeth a<3> on the end of the hub. The bolt is actuated by a spring-pressed rod i which fits loosely in a hole in the bolt. The locking-members are dismounted from the nut by pushing the rod i against the action of its spring till the head i<2> can be held by a forked plate. The rod is then swung sideways and the bolt removed, after which the rod can be released and withdrawn from the inside of the nut.