baber/WOPTO huggingface dataset:
Patent GB-424734-A (GB)
Title: Process for the production of colloidal aluminum hydroxide and the colloidal aluminum hydroxide produced thereby
IPC: C01F7/141
Filed: 1934-03-22
Abstract: A readily filtered colloidal aluminium hydroxide is obtained by mixing solutions of sodium aluminate and of a soluble aluminium salt such as the sulphate, and adding calcium, strontium, or barium hydroxide, or calcium aluminate.  The reaction mass should preferably have a pH value of 7,5--9, and is allowed to stand for some hours before being filtered and washed.  The product contains from 4--10 per cent of solids, and may be used for the manufacture of printing inks, or for the coating and sizing of paper.
Patent GB-733074-A (GB)
Title: Improvements in or relating to coagulation of unsaturated organic compound sulfur dioxide resin latices to produce a coalgulum in crumb or granular form
Inventor: CROUCH WILLIE WOODWARD
IPC: C08G75/22
Filed: 1952-04-09
Abstract: A continuous or batchwise process for producing granular heteropolymers comprises heteropolymerizing sulphur dioxide and an unsaturated organic compound in aqueous emulsion and coagulating the latex, preferably with a water-soluble salt of a polyvalent metal of Group II, III (b) or IV (b), at a temperature sufficiently below the minimum moulding temperature of said resin such that the coagulum is free from a hard dense mass of resin but above the temperature at which a fine unfilterable powder is formed.  The temperature may be 15 DEG  to 50 DEG  F. below the minimum moulding temperature.  The heteropolymers may be prepared as described in Specification 686,446. When a metal salt is used as a coagulating agent it may be added in the solid state or in solution and is preferably a salt of aluminium, calcium, magnesium, lead, strontium or barium.  The minimum moulding temperatures and coagulation temperatures of various resins are given.
Patent GB-645765-A (GB)
Title: Method of separating esters of octahydrophenanthrene carboxylic acids
Filed: 1948-03-31
Abstract: Methyl esters of 1-keto-2-methyl-7-alkoxy-1 : 2 : 3 : 4 : 9 : 10 : 11 : 12 - octahydrophen-anthrene-2-carboxylic acids are separated from diastereoisomeric mixtures thereof by a fractionating treatment with the use of one or more solvents, e.g. by fractional crystallization from an organic solvent (e.g. acetone, methanol or ethanol), or by chromatography (e.g. with the aid of alumina or calcium oxide), using different solvents for elutriation, or by extraction of the original material by shaking with a mixture of solvents (e.g. acetone, water and chloroform), or by a combination of such treatments.  Fractions obtained by crystallization may be further purified by chromatography or sublimation or both.  The starting materials may be prepared from a g  - (2 - carbomethoxy - 6 - alkoxy-1 : 2 : 3 : 4 - tetrahydronaphthyl - 1) - butyric acid methyl ester by the Dieckmann condensation followed by methylation of the resulting b -keto-acid ester, or from a 1-keto-7-alkoxy-1 : 2 : 3 : 4 : 9 : 10 : 11 : 12 - octahydrophenanthrene by converting it into its 2-oxalate, and methylating the product after splitting off carbon monoxide.  The products may be used as starting materials for the manufacture of medicaments, e.g. for the production of homogeneous doisynolic acids or oestrones.  In an example, the diastereoisomeric mixture of 1 - keto - 2 - methyl - 7 - methoxy - 1 : 2 : 3 : 4 : 9 : 10 : 11 : 12 - octahydrophenanthrene - 2 - carboxylic acid methyl esters obtained by esterifying g  - (6 - methoxy - 2 - carboxy - 1 : 2 : 3 : 4 - tetrahydronaphthyl - 1) - butyric acid with diazomethane, heating the ester with sodium methoxide in benzene and methylating the product with methyl iodide in methanol, is dissolved in hot acetone and four fractions are crystallized; alternatively the mixture is chromatographed on alumina from solution in a 1 : 3 mixture of benzene and petroleum ether and elutriated with petroleum ether.  The Specification as open to inspection under Sect. 91 comprises also other methods of fractionation, e.g. sublimation.  This subject-matter does not appear in the Specification as accepted.
Patent GB-318297-A (GB)
Title: Improvements in spacing mechanism for typewriters
IPC: B41J19/76
Filed: 1928-05-29
Abstract: 318,297. Marks, E. C. R., (Elliott-Fisher Co.). May 29, 1928. Divided on 317,917. Line-spacing mechanism.-In machines having a flat platen and a type-carriage movable for linespacing and letter-spacing respectively, the linespacing mechanism is operated manually, or automatically on return of the type-carriage , and preferably comprises normally disengaged co-operating members on the platen and platenframe. In the machine shown in Figs. 1 and 4 a type-carriage B, and a platen-frame 0 supporting a flat platen 16 are movable for letter-spacing and line-spacing respectively on framework A, the frame C having pins engaging grooves 18 in the side bars 2 of the framework. A rack 52 on the platen frame co-operates with a pawl 55 pivoted to an arm 56 on a shaft 57, a spring 59 normally holding the pawl in contact with a stop 61 and out of engagement with the rack. The pawl is operated manually by means of a lever 66 connected to an arm 64 on the shaft 57, and, on return of the type-carriage, is operated automatically by means of a projection on the typecarriage and a co-operating arm 111 on the shaft 110 of the lever 66. In operation, the pawl moves into engagement with the rack and then feeds the rack backwards, a movement of one line-space being thereby imparted to the platen. During the feed movement of the pawl a spring-urged pin 63 is pushed inwards and permitted to return, and on return of the pawl it is held out of engagement with the rack by means of the pin, and then moves into engagement with the stop 61. The teeth 54 at the rear of the rack may have a wider pitch than the remaining teeth 53, the arrangement causing the heading of a bill &c. to receive wider spacing than the text. The platen frame is urged forwards by means of a spring drum mounted on the framework and connected by a tape to the platen frame, a number of pins on the frame permitting adjustable connection of the tape. Forward movement of the platen frame is normally prevented by means of pivoted spring-urged detent 68 co-operating with the rack. The detent is released to permit forward movement of the platen frame by depressing a key 79 mounted on a lever 77 which is connected by a link 76 to a bell-crank 74 engaging a hook 73 on the detent. The key is locked in depressed position by means of a spring-urged lever 80 and a co-operating notch 82 in the keystem. To arrest the platen frame, the lever 80 is released manually, or, when the platen frame reaches the forward position, is released automatically by means of a plunger mounted in the framework and actuated by a cam on the platen frame.
Patent GB-717679-A (GB)
Title: Improvements in or relating to fire precaution arrangements for aircraft gas turbineengines
Inventor: BLACKMAN STUART BERTRAM
IPC: F02C7/25
Filed: 1951-04-19
Abstract: 717,679. Gas turbine plant. BRISTOL AEROPLANE CO., Ltd. April 10, 1952 [April 19, 1951], No. 9220/51. Class 110(3) To lessen the risk of fire in an aircraft gas turbine engine, at least the fuel pump with associated accessories and the control apparatus and elements of the fuel system which operate at comparatively low temperature are enclosed by a casing carried by the engine. A comparatively low temperature is stated to be a temperature at which rapid evaporation of leaked fuel does not occur. The fuel pump 14, Fig. 4, fuel filter 30, and flow and air/fuel ratio controllers 31, 32, are bolted together and surrounded by a sheet metal casing 24. The casing is formed in two parts 24a, 24b which are held together by toggle clips 25. The top surface of the casing 24a is stiffened by two longitudinal angle members 26 which are pivoted at one end to lugs 27 carried by a ring 19 forming a seal between the casing 24 and the lubricating oil sump 15 and at the other end to resilient support arms 27 bolted to the compressor casing 11. This arrangement allows differential expansion between the pump and compressor casings. The casing 24 is suspended beneath the compressor casing 11 by a ring 19 and pivotal links 28. The filter 30 extends across the casing and has alternative fuel inlets at each side. The pilots throttle is connected to an operating arm 38. Fuel is sprayed into the combustion chamber 40 by a number of injectors 41 connected by pipes 42 to a distributor 43 which is connected by a pipe 44 to the controller 31. To minimize the fire risk due to the presence of the combustion chambers, the injectors 41 and their supply pipes are enclosed by a sheet metal shrouding ring 46 bolted to the flanges 47, 49. A tubular member 51 connects the casing 24 to the ring 46. The joints 52, 53 at each end of the member 51 allow a certain amount of universal movement and the joint 52 is also arranged to slide relative to the casing 46 so as to allow for differential expansion of the various parts. A member 54 is urged by a spring 55 against a facing 56 provided on the fuel pipe 44 to form a gas-tight joint between the casings. Provision is made for the supply of fire extinguishing or preventing medium such as methyl bromide into the ring 46 at 57 and into the casing 24. A modification in which the pump casing 24 is arranged to one side of the compressor casing is also described. Specification 703,645 is referred to.
Patent GB-218385-A (GB)
Title: Improved process of treating liquor accruing from the lixiviation of vegetable matter
IPC: D21C11/00
Filed: 1923-04-04
Abstract: Alkali metal compounds, recovering from liquors containing organic matter.  In the process of treating "black liquor" from the alkali treatment of vegetable matter described in the parent case, calcium acetate is employed as the flocculation "catalyst" to cause the separation of the colloidal particles, and the separated matter is treated by a suitable solvent such as carbon tetrachloride or trichlorethylene to remove fatty or resinous substances, the residue being hydrolyzed and fermented to obtain ethyl alcohol or destructively distilled.  Alternatively, when oxalic acid is used as the flucculation "catalyst" in the process of the parent case, it is recovered before the succeeding treatment by adding the necessary quantity of lime.
Patent GB-214077-A (GB)
Title: Coin-freed prepayment mechanism
IPC: G07F15/08
Filed: 1923-04-05
Abstract: 214,077. Dougall, J. April 5, 1923. Gas, supplying by meter; price-changing mechanism; coin action, thrust. - In prepayment mechanism for gas meters the price-changing disc- 3, Fig. 4, provided with the coin slot is locked in adjusted position by a finger 6, Fig. 1, pivoted to the casing 2 of the coin mechanism and by a flanged ring 5 secured to the casing by a bayonet joint 2a, 5a. The finger 6 engages between peripheral teeth on the disc 3 and locks the ring 5 by engaging a slot 5<b> therein. The finger 6 is itself locked by a sealed part of the meter cover. The coin when thrust into a rotary carrier 8 moves a member 30, against the action of a spring 32, in a split guide 34 until the end 31 of the member engages the crown teeth 18 of a measuring wheel 16. Radial teeth 17 on the wheel 16 gear with a wheel nut 19 which, on prepayment, causes longitudinal movement of a screwed spindle 20 to open the valve. The spindle 20 is returned by the meter by worm gearing 25 engaging a worm wheel 22 slidably keyed to the spindle.
Patent GB-145398-A (GB)
Title: Improvements in springs for the valves of explosion motors
IPC: F01L1/46
Filed: 1920-03-31
Abstract: 145,398. Soc. des Moteurs Salmson (Systeme Canton UnnÚ). June 19, 1919, [Convention date]. Wire springs.-A double helical torsional valvespring S<1>, S<2>, for internal-combustion engines is formed of two or more wires F<1>, F<2>, wound with two spirals S<1>, S<2> and an intermediate loop X. The ends of the spring bear upon a fixed plate P, and the loop X bears upon a washer on the valve-stem. The separate wires may be clamped or soldered together at B, and the two spirals S<1>, S<2> may be of unequal diameter and may be either cylindrical or conical.
Patent GB-308688-A (GB)
Title: Improvements in and relating to rotary internal combustion engines
IPC: F02B53/00
Filed: 1929-03-25
Abstract: 308,688. Longhin, N. March 26, 1928, [Convention date]. Movable-abutment type; working-fluid supply; cooling parts.-A rotary internal-combustion engine comprises a rotor with a number of depressions around its periphery and a co-operating stator having a plurality of cam shafts parallel with the rotor shaft with the cams thereof directly acting on sliding abutments to maintain them in contact with the color depressions. The Figures show longitudinal and transverse sections of an engine supplied with compressed charges by rotary compressors 12; the rotor 4 is formed with a number of separate sections 25 - - 28 each having a number of depressions 29 - - 31 which co-operate with sliding abutments 41. The charges are delivered from the compressors to the engine sections through admission valve devices 36 and after combustion and expansion exhaust through two ports 38, 39. The abutments are actuated bv cams on shafts 14, 15 which are driven by the rotor through gearing 16, 18 and which drive the compressors 12, ignition devices 34, and, through skew gearing 19, 20, pumps for cooling-water and lubricating-oil. The rotor is hollow and fitted with an air circulating fan 43.
Patent GB-1418342-A (GB)
Title: Tool-holders
IPC: B23Q1/60
Filed: 1973-02-27
Abstract: 1418342 Extensible tool holder SOC NATIONALE DE POUDRES ET EXPLOSIFS 27 Feb 1973 [29 Feb 1972] 9571/73 Heading B3C [Also in Division G1] A radially extensible tool holder for machining, e.g. boring, or inspecting by measuring concentricity inaccuracies, the interior surfaces of revolution of workpieces, includes a body 1 on which is slidably mounted a telescopic assembly of slides 10-13 the innermost 13 for carrying the tool 15. Transmission means simultaneously extend the subordinate slides 11-13 when base slide 10 is extended and in the particular embodiment this means comprises a system of racks 20, 21, 24, 25, 28, 29 and pinions 19, 22, 26, each pinion engaging two racks. Base slide 10 is displaced by means of piece 30 fixed to the slide and whose threaded bore engages screw 31 rotated via pinions 35, 37 by a rotary motion take-off shaft 41. Alternatively, the displacement of base slide 10 may be effected by an hydraulic ram. Each pinion 19, 22, 26 may be replaced by two of different diameters keyed to the same rotatable shaft so as to produce different extension distances for adjoining slides. In the embodiment body 1 is attached via ring 2 and collar 5 to boring bar 4. Cover 8 may have an axial projection (not shown) which in use is supported in a bearing mounted on a boring machine when boring long workpieces.
Patent GB-550809-A (GB)
Title: Improvements in or relating to detent and clutch devices for use in synchronous electric motor mechanisms and for other purposes
IPC: H02K7/118
Filed: 1941-07-28
Abstract: 550,809. Detent and clutch mechanism. VENNER TIME SWITCHES, Ltd., HORGAN, W. F., and FOX, L. W. July 28, 1941, No. 9595. [Classes 80 (ii) and 80 (iv)] [Also in Groups XVIII and XXXVI] A snail cam 2a on a motor shaft 1 co-operates with a detent having long and short arms 7, 6, and pivoted at 5 on a fixed frame 3. The cam when the shaft 1 rotates in anticlockwise direction engages only the extreme ends of the arms 6, 7. Should the shaft 1 tend to rotate clockwise the cam 2a interlocks with the arm 6 and such rotation is thus prevented. If the pivoted detent is mounted on a rotatable member the device acts as a freewheel clutch. The shaft 1 may be the rotor spindle of a synchronous electric motor of a clock or electricity meter.
Patent GB-997737-A (GB)
Title: Reduction in hydrodynamic drag of water buoyant vessels
IPC: B63B1/38
Filed: 1964-05-11
Abstract: 997,737. Reducing skin friction of marine craft. A. P. PEDRICK. May 11, 1964, No. 9653/63. Headings B7A and B7M. In a marine craft which in its movement through water derives substantial buoyancy by reason of the base surface of its hull being at a level below that of the surface of the water through which it is moving, said base surface being over at least part of its length substantially flat, a stream of air is discharged forward of said flat part with a velocity such that its horizontal component in the direction towards the stern of the craft is equal, or nearly equal, to the velocity of the craft so that the air so discharged forms a substantially immobile mass, in the space between the flat base part and the water directly below it, such mass of air being undisturbed by the relative movement over it of any recesses or ridges formed in the base of the craft between the point of discharge of the air and the rear of the base longitudinally directly in line with said point of discharge, beyond which near extremity the air is free to rise upwardly and escape to the surface of the water in which the craft is buoyant. In Figs. 2 and 3 air taken in at 7 is discharged by a pump to below the flat base 1 of the hull which has sloping sides 2, 3. The base is provided with longitudinal fin plates 12. The outflow of air to below the base is regulated manually or automatically, e.g. by plate valves 19 (Fig. 9) adjustable by means 14 in compartments 13. The invention may be applied to existing ships with vertical sides, e.g. by providing a false side 20 (Fig. 13) sealed in airtight manner at the top by a bellows or diaphragm member 21. An alternative method (Fig. 16) is to provide concave, inclined fins 23, each projecting slightly more than the one below it. In Figs. 19 and 20 a windmill 30 drives a compressor 31 from which air is pumped out of ports 32 along the keel of a yacht, which keel has troughs formed by fins 33 running longitudinally thereof. A sculling boat for boat racing may incorporate the invention by one of the crew operating a pump, e.g. a foot operated air compressor, which causes air to flow under the base of the boat from near the bows thereof.
Patent GB-686901-A (GB)
Title: System for controlling and regulating the frequency of electrical oscillation
IPC: H03D13/00
Filed: 1948-04-06
Abstract: 686,901. Automatic frequency control systems. CHALHOUB, C. April 6, 1948 [July 29, 1947], No. 9670/48. [A Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 12, 1948.] Class 38 (iv). An automatic frequency control system in which a sinusoidal frequency to be controlled and a standard sinusoidal frequency are applied to a biased detector and the frequency to be controlled and the standard frequency dephased by 90 degrees are applied to another biased detector, each of the two detector outputs being differentiated and added to the other detector output, the two sums serving to operate electromechanical relays, the contacts of which control frequency. In Fig. 1, a standard frequency sinusoidal voltage UP is applied to the primary of a transformer 3 and two voltages UP1, UP2 in phase quadrature are derived from the secondary through phaseshifting networks 18, 19, 181, 19<SP>1</SP>. , Each of these voltages is added to that from a transformer 4 to which the local frequency UL to be controlled is applied and the resultant voltages are applied to negatively biased diodes 1 and 2 respectively energizing first windings of double-wound relays 6 and 7 controlling the connections of lines L1, and L2 for effecting frequency correction in opposite senses. The currents in the first windings of relays 6 and 7 are not alone, sufficient to energize the relays. Second windings of the relays are energized by triodes 21 and 20, the grid voltages of which, due to networks C, R lag 90 degrees on the voltages applied to the first windings. Thus with frequency deviation in one sense the energization of the first winding and relay 7 operates to connect lines L2. Relay 6 operates upon frequency deviation in the opposite sense. In a modification of this arrangement diodes are dispensed with, the resultant voltages and the voltages derived by the CR networks being applied to the grid-cathode circuits of a single pair of triodes, the anode currents of which are utilized for frequency correction.
Patent GB-125672-A (GB)
Title: Improvements in and relating to Apparatus for Expressing Liquid from Materials containing the same.
Inventor: HINCHLEY JOHN WILLIAM
IPC: B30B9/06
Filed: 1917-07-05
Abstract: 125,672. Hinchley, J. W. July 5, 1917. Peat, preparing.- In an extrusion press for expelling liquid from peat, lead paste, clay, &c. the material during its passage to the extrusion outlets is caused to pass over surfaces formed of rigid compact porous filtering medium such as porous pottery. The outlet nozzles 4, which are provided with interchangeable dies 10 to vary the size of the outlet opening may be fitted with a conical lining 7 of porous pottery, at the back of which are grooves 5 for the escape of liquid. The sides of the compressed chamber, preferably the parts which are not traversed by the piston, may also be formed with filtering-linings of porous pottery or, in this case, of wire gauze. The end of the compression chamber may be fitted with a plate 28, Fig. 12, of porous pottery having openings 29 leading to outlet orifices 30. The material during treatment may be heated by devices heated internally by steam and placed in front of or inside the outlet nozzles, or by a hollow steamheated plate having openings leading to the outlet orifices.
Patent GB-1153035-A (GB)
Title: Production of Aromatic Polymers and Intermediates therefor
Inventor: BARR DENNIS ARTHUR
IPC: C08G75/0236
Filed: 1965-09-24
Abstract: 1,153,035. Halogenated hydroxydiphenyl sulphones and ketones. IMPERIAL CHEMICAL INDUSTRIES Ltd. 12 Sept., 1966 [24 Sept., 1965; 31 Jan., 1966 (3); 7 March, 1966], Nos. 40734/65, 4176/66, 4177/66, 4178/66 and 9764/66. Heading C2C. [Also in Division C3] The invention comprises alkali metal salts of 4 - (4 - halogenophenylsulphonyl) phenol and 4 - (4 - halogenobenzoyl) phenol, which are obtained by reacting alkali metal hydroxides with bis-(4-halogenophenyl) sulphones and ketones in polar liquids at temperatures below 200‹ C. The free phenols may be obtained by acidification. On heating at above 200‹ C. the salts polymerize with displacement of alkali metal halide. In examples, 4-(4-chlorophenylsulphonyl) phenol and its potassium and sodium salts are obtained by reacting bis-(4-chlorophenyl) sulphone with potassium hydroxide and sodium hydroxide.
Patent GB-329759-A (GB)
Title: Improvements in machines for feeding and stacking sheets of paper and the like
IPC: B65H29/14
Filed: 1929-03-27
Abstract: 329,759. Stanley, A. H., (Maxson, C. B., and Maxson, J. W.). March 27, 1929. Delivery apparatus. - Paper and like sheet material is fed towards the stacking-position a,t such a high speed that it has a tendency to buckle by means engaging both sides of the sheet, and after the head of the sheet has reached the stacking-position, the tail is engaged to slow it down and permit it to be properly aligned. The sheets of paper, which may be cut by cutters 4, 6, Fig. 1, from a web, or a stack of sheets cut from a number of superposed webs, or previously-cut sheets are fed between rapidly-moving tapes 10, 16 so that successively-fed sheets are spaced apart. After leaving the tapes 10, 16, the sheet is fed on to rolls 71 disposed between the end roll 30 supporting the tapes 16 and the stacking-position 18. Tapes 73 passing round rollers 75, 77 and driven at a slower speed co-operate with the rolls 71 to engage the sheet and reduce its speed. The rollers 75, 77 are carried in a frame 79 pivoted at 81 and actuated by a crank and connecting-rod 83 from a cam 89 engaging a roller 91 on the rod 83 so that the tapes can be raised to permit the sheet to be fed on to the rolls 71. In a modification, a rubber-covered cam 67. Fig. 5, is fixed to the shaft 69, which loosely supports the rollers carrying the tapes 10, and engages at the correct time with a tail of a sheet passing over the roll 71.