baber/WOPTO huggingface dataset:
Patent GB-386460-A (GB)
Title: Improvements in and relating to healds for looms
IPC: D03C9/02
Filed: 1932-02-18
Abstract: 386,460. Loom healds. BRADE, J. R., 28, Queens Road, Blackburn. Feb. 18, 1932, Nos. 4770 and 24361. [Class 142 (i).] A cotton or like loom heald is provided with two eyes side by side forming an eye of double thickness. The eye is formed with two loops of thread x and has the usual single knot y with the second loop arranged in the crutch of the knot. A machine is described for knitting the healds and comprises a rotating and reciprocating hooked grabber adapted to seize the thread from a needle to form one loop and to transfer the loop to a laterally and vertically moving rotatable jumper which forms the second loop and moves both loops to be pushed on to the needle in the usual manner.
Patent GB-252250-A (GB)
Title: Improvements in composite sheet building materials
Filed: 1925-02-20
Abstract: 252,250. Hughes, H. Wilson-. Feb. 20, 1925. Compound sheet materials.- Sheet metal is coated on one or both sides wih plastic asbestoscement or like fibrous material which is first coated, while wet, with bitumen, pitch, or other adhesive and, whilst still plastic, is placed with the coated side inwards on the metal sheet which is also previously coated with a similar binder. The whole is then pressed together. The metal sheet may be perforated or cut to form jagged edges or tongues on each side to key with the coating. For indoor use, casein, glue, or gold size may be used as the binder. The material is applicable as roofing and wall linings.
Patent GB-1430492-A (GB)
Title: Process for producing halogen-terminated polysulphide polymers
IPC: C08G75/16
Filed: 1974-02-01
Abstract: 1430492 Halogen-terminated polysulphide polymers THIOKOL CORP 1 Feb 1974 [20 Feb 1973] 4852/74 Heading C3R Halogen-terminated polysulphide polymers or copolymers are prepared by (a) either poly. merizing a polythiodiglycol or copolymerizing a polythiodiglycol and formaldehyde by heating preferably at 60-140 C. in the presence of a Lewis acid catalyst whilst removing the water of reaction, and (b) converting the resultant hydroxyl terminals on the poly(polythiodigly. col) or poly(polythiodiglycol-formaldehyde) copolymer to halogen terminals by reaction with either an inorganic halogenating agent such as HCl, HBr, HI, HF, SOCl 2 , SOBr 2 , PO 2 Cl 2 , PCl 3 , PCl 5 , or a monohalogenated organic compound such as a monohalogenated epoxide or alcohol, e.g. an epihalohydrin or an ethylene halohydrin. Suitable acid catalysts have a pH of 4 or less and include HBr, HCl, H 2 SO 4 , H 3 PO 4 , FeCl 3 , p-toluene sulphonic acid and sulphamic acid. Useable polythioglycols have the formula HOC 2 H 4 S x C 2 H 4 OH, where x=2-5. The water of reaction may be removed by azeotropic distillation in the presence of a water immiscible solvent, or by vacuum distillation. The conversion to halogen terminals may occur during or after the polymerization reaction. The molar ratio of the polythiodiglycol to HCHO may be greater or less than 1 : 1. The resultant halogen-terminated polymers may be reacted with an alkali metal or alkaline earth metal polysulphide, e.g. Na 2 S x , to form a high M.wt. latex dispersion which can be converted to -SH terminated elastomers by the usual methods.
Patent GB-1020040-A (GB)
Title: Improvements in or relating to a method of and a device for automatic stabilisation of low frequency oscillators
IPC: G04C11/04
Filed: 1963-02-06
Abstract: 1,020,040. Automatic speed control. ELEKTROCAS NARODNI PODNIK. Feb. 6, 1963 [Feb. 7, 1962], No. 4861/63. Heading G3R. [Also in Division H3] An oscillator drives through a synchronous motor 10 and gearing one side 15 of a differential gear, the other side 4 being driven at constant speed, controlled by a balance wheel or pendulum escapement 1, so that any error in oscillator frequency or motor speed varies the angular position of the differential gear planet wheel 16 and through a ferro-magnetic link 18 the magnetic reluctance of an inductor core 19 determining the oscillator frequency, to correct its frequency. Alternatively the LC oscillator tuned circuit capacitance can be controlled, or the resistance or capacitance of an RC oscillator. The motor 10 also winds up a coil spring 7 driving the constant speed side of the differential gear, and as both drives to the latter from the motor have equal transmission ratios the spring 7 acts also as a clutch. Different frequencies and speeds may be stabilized, by adjusting a regulator arm 2 of the escapement. The motor 10 may drive the hands of a clock or, through cams, produce master pulses controlling distant clocks.
Patent GB-763575-A (GB)
Title: Improvements relating to radar automatic tracking circuits
Inventor: WHITE ERIC LAWRENCE CASLING
IPC: G01S13/72
Filed: 1953-02-21
Abstract: 763,575. Pulse radar. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 22, 1954 [Feb. 21, 1953]. No. 4885/53.. Class 40(7) In an automatic tracking arrangement in a radar system, Cartesian co-ordinates are employed in the generation of gating pulses to gate radar echoes to error sensing means. During gating pulses generated at V27A, signals resulting from echoes are passed through a diode gate 71 enclosing the predicted position of a target to V2B thereby rendering V2B conducting and thus initiating error sensing for the x co-ordinates. Whilst V2B is conducting its anode current is divided between V4A and V4B according to the difference between actual and predicted values of x. The resultant pulses are rectified at V5, differentially compared at V6 and integrated at V8, giving a predicted value of -xo at the output of V9B for the next gate. This value of -xo is also applied to the y co-ordinate gating pulse generator. Similar error sensing is performed for the y co-ordinates from the same pulses, (circuit not shown). The x and y values (x o , y o ) of the target position are thus predicted and the gate 71 is open by the absence of too negative a voltage on four diodes (64, 65 for x values). To reduce the size of the gate required to include the whole target, a series of square gates E1, E2, E3, E4, E5 (Fig. 1b) are produced in successive radar pulse recurrence periods giving a virtual arc gate corresponding to the width of the radar beam. In a modification, Fig. 4, (not shown) a minimum square gate is superimposed on the virtual arc gate to maintain the size of gate at small ranges. Specification 763,576 is referred to.
Patent GB-534584-A (GB)
Title: Improvements in or relating to front forks for cycles, motorcycles and the like
IPC: B62K25/12
Filed: 1940-03-16
Abstract: 534,584. Spring forks. FRANCIS & BARNETT, Ltd., FRANCIS, G. I., and KING, W. A. March 16, 1940, No. 4924. [Class 136 (iii)] In a front spring fork for motor and other cycles of the type in which the fork is pivoted to the steering-pillar, the pivotal movement is cushioned or controlled in one direction by one or more rubber buffers arranged at one side of the pivotal axis, and in the other direction by one or more compression springs arranged at the other side of the axis. In the form shown, a box-like fitting a is secured to the lower end of the steering-pillar c, and is provided with two compartments a<SP>1</SP>, a<SP>2</SP> open at the bottom and separated from each other by a transverse bearing a' for a pivot-pin e. The compartment a<SP>1</SP> receives a rubber buffer f, and the compartment a<SP>2</SP> is formed with two sockets f<SP>1</SP> to receive a pair of compression springs f<SP>2</SP>. A fitting b secured to the upper ends of the fork limbs d and formed as an integral part of the fork crown is provided on each side with a perforated lug to receive each end of the pivot pin e, and is also formed with fore and aft platforms b<SP>2</SP>, b' buttressed by webs b<SP>4</SP> and adapted to bear against the buffer f and spring f<SP>2</SP>. In the case of excessive braking stresses, the rear platform b<SP>3</SP> comes into contact with a stop surface a<SP>5</SP> on the fitting a.
Patent GB-669613-A (GB)
Title: Card filing devices
IPC: B42F17/28
Filed: 1950-02-27
Abstract: 669,613. Filing papers. SEELEY, W. H. Feb. 27, 1950, No. 4999/50. Class 146 (i). A shaft and side member assembly for a rotatabledrum card - filing device comprises a pair of spaced side members 10 supported in an upright position, each member having aligned openings 12 at least partially surrounded by an inwardly extending seat having opposing flat interior surfaces 16, 16, a cylindrical shaft 14 having flattened ends 15 to fit and mate with the opposed surfaces 16 so that the shaft is held against rotation and means for securing the shaft ends in the seats, a cylindrical drum being mounted on the shaft between the side members 10. The opposed surfaces 16 are formed by spaced, parallel and vertically disposed projections extending inwardly from the side members 10 with the aligned openings 12 centrally disposed, the shaft 14 being secured by screws through the openings 12. The rotatable card filing drum and brake mechanism therefor are identical with those described in Specification 669,614
Patent GB-433471-A (GB)
Title: Improvements in and relating to the preparation of bread and other baked cereal foodstuffs
IPC: A21D2/04
Filed: 1934-02-15
Abstract: In the production of bread, cakes, biscuits or other foodstuffs having a basis of flour or meal, hydrogen peroxide or other per compound, e.g., sodium percarbonate or perborate, or a compound of urea and hydrogen peroxide, is used as a leavening agent, and the dough is allowed to prove for such a time that not more than 0,1 per cent of hydrogen peroxide reckoned on the weight of the flour or meal, is present in the dough at the commencement of the baking operation.  When per-compounds are used the equivalent concentration is reckoned in terms of hydrogen peroxide.  The usual maximum hydrogen peroxide concentration permissible is about 0,02 per cent. The initial addition of hydrogen peroxide is from 0,5 to 2,0 per cent based on the weight of the flour or meal.  Samples of the dough may be tested from time to time by mixing them with a little water and adding a few drops of an acid potassium iodide solution.  A brown colouration indicates the presence of peroxide, and comparison with the colouration produced by a standard peroxide solution gives an indication of the peroxide concentration.  When this test reveals no residual peroxide, or merely a trace, the dough may be baked.
Patent GB-511686-A (GB)
Title: Composition for rendering plaster work and other materials impermeable
IPC: C04B41/65
Filed: 1938-02-18
Abstract: 511,686. Coating-compositions. BAUER, M. Feb. 18, 1938, No. 5192. [Class 95] [Also in Group VIII] A liquid or semi-liquid composition for rendering materials such as plaster, cement, cork, bricks, magnesite slabs and wood conglomerates impermeable to liquids such as water, petrol, oil or acids and to grease, comprises water, formaldehyde, potassium bichromate, barium chloride, hydrochloric acid, sodium chloride and chloride of iron. Calcium chloride or aluminium chloride or both may be added. Reference is made to the treatment of underground passages, tunnels, fortifications, telephone poles, silos, dams and harbour works.
Patent GB-178636-A (GB)
Title: Improvements in or relating to drying processes and apparatus therefor
IPC: F26B17/28
Filed: 1921-02-16
Abstract: 178,636. Testrup, N., and Techno- Chemical Laboratories, Ltd. Feb. 16, 1921. Film evaporators.-A film or layer of moist peat, lignite, &c. is formed upon the periphery of a rotating drying-drum by pressing the material against the heated drying surface by means of a roller of smaller size moving peripherally at a speed so much lower that the film adheres to the drying surface in a practically unbroken layer. Peat, for example, containing between 70 per cent and 90 per cent of water may be fed into the V-shaped trough between two cylinders b, c, the larger b of which revolves at between two and three times the speed of the smaller feed roller c. The material adheres to the surface of the drying cylinder b, which may be roughened to facilitate the adhesion, until, when dried, it is removed by a scraper e and transferred to a conveyer f. The vapour evolved by the material may be heated by compression, as described in Specifications 149,055 and 150,068, and employed in heating the drying- drum.
Patent GB-1477793-A (GB)
Title: Process for producing carbon fibres
IPC: D01F9/22
Filed: 1975-02-07
Abstract: 1477793 Carbon fibres JAPAN EXLAN CO Ltd 7 Feb 1975 [15 Feb 1974] 5394/75 Heading C1A Carbon fibres are made by spinning acrylic fibres in a water-swollen state from an inorganic solvent solution of an acrylonitrile homopolymer or copolymer containing at least 85 mole percent acrylonitrile and having a degree of orientation of at least 50% and a water content of 5-150%, drying the fibres at a temperature below 70‹ C to reduce the water content to below 4% thus devitrifying the fibres and then carbonizing the dried and devitrified fibres. The dried fibres are preferally thermally stabilized by heating in an oxidizing atmosphere, e.g. air at 150- 400‹ C prior to carbonization in a non-oxidizing atmosphere, e.g. N 2  at 800-2000‹ C. The carbon fibres may be subsequently graphitized in a non-oxidizing atmosphere at 2000-3500‹ C. The acrylic fibres may be spun from a solution of the acrylonitrile polymer in a thiocyanate, e.g. Li, K, Na or HN 4 <SP>+</SP>, zinc chloride or perchlorate or a concentrated solution of an inorganic acid such as H 2 SO 4  or HNO 3 . The solution preferably contains 5-30% by weight of the polymer and is preferably spun into air or an inert, non-coagulating gas then led into a coagulating bath. The coagulated fibres are preferably washed and stretched from 3-25 times their original length before drying. The drying is preferably performed at below 60‹ C to produce fibres of water content less than 2%.
Patent GB-341313-A (GB)
Title: Improvements in and relating to hand bags
IPC: A45C13/04
Filed: 1930-02-18
Abstract: 341,313. Handbags. ZEHNDER, J., 122, Ludwigstrasse, Offenbach - on - Main, Germany. Feb. 18, 1930, No. 5439. Convention date, Dec. 11, 1929. [Class 133.] A handbag with. out a bow frame has an inner pocket with a bow frame connected thereto by a suspensior frame arranged between the bow frame and the lateral folds of the bag. The upper edges of folds c ir a bag a with a closure flap b are stiffened by meta ribs d to which the bow frame i of an inner pocket is hinged at points e by the intermediary of strips g.
Patent GB-846398-A (GB)
Title: Improvements in or relating to time delay mechanisms for controlling a gas valve in gas cookers or other gas appliances
IPC: F24C3/12
Filed: 1957-02-18
Abstract: 846,398. Valves. MIDGLEY, A. H. Jan. 24, 1958 [Feb. 18, 1957], No. 5439/57. Class 135. A valve 7, Fig. 1, in a gas cooker or other gas appliance is controlled by a clock movement so as to be opened or closed after a first pre-set delay period and then closed or opened after a second pre-set delay period. If the valve is a main valve it is opened then closed; if it is a pilot valve it is closed then opened. The setting and actuating mechanism comprises two spindles 1 and 2 which control a lever 5 which actuates the plunger 3 of the valve 4. The spindles are axially movable and rotatable for setting purposes. A third axially movable spindle 9 may be manually depressed to move the lever 5 to its operative position. There is also provided a spindle 11, Fig. 3, axially movable and rotatable for setting purposes and operated through a delay mechanism to close the valve 10 controlling the gas supply to the grill or boiling ring of the cooker. Specifications 749,329 and 768,842 are referred to.
Patent GB-129232-A (GB)
Title: Improvements in Air Compressors.
Inventor: RAYNER PERCY
IPC: F04B39/10
Filed: 1919-03-05
Abstract: 129,232. Rayner, P., and Rayner, G. H. T. March 5, 1919. Addition to 5190/14. Valves, arrangement of. - In a vertical compressor having flat ring plate inlet and discharge valves on the piston and at the cylinder top respectively, as described in the parent Specification, the discharge valve seat is recessed and the inlet valve guard-plate formed to co-operate with it to reduce elearance; the discharge guardplate may be formed with a central opening and a peripheral annular series of ports; the discharge-guard plate and the discharge valve seat may be formed as separately removable parts held in place by guide-pins and springs bearing against the cylinder cover: the discharge valve may have multiple ports, and the valve seat may have concentric series of ports. As shown in Fig. 1, the discharge valve seat c is formed with a recess c<1> of dimensions to correspond with the piston top and the inlet valve guard-plate b at the end of the stroke; the inlet valve a comes close to the annular face c<2> of the discharge valve seat. The discharge valve seat is fitted with an eye bolt f for removal; the discharge guard-plate c is formed with central opening h and annular series of ports i, and with an annular groove c<1> receiving the valve springs. It is held by springs k bearing against the cylinder cover and surrounding guide-pins which pass through the guardplate into recesses in the valve seat. Figs. 2 and 3 show a multiple port discharge valve, the seat being formed with two series of ports m, m<1>, and the valve n with a central aperture n<1>, slots n<2>, and recesses n<3> which receive the springs: the guard-plate has several concentric series of exhaust ports o, o<1>, o<2>, o<3>. The valve seat and guard-plate are held together by a bolt p and nut p<1> in addition to the springs k.
Patent GB-1177971-A (GB)
Title: Chlorination of Ethylenic Compounds
Inventor: FIRNHABER BERNHARD ERNST
IPC: C07C17/10
Filed: 1967-02-03
Abstract: 1,177,971. Chlorination process. PULLMAN Inc. 3 Feb., 1967, No. 5459/67. Addition to 1,066,218. Heading C2C. Chlorinated ethylenes, e.g. vinyl chloride, are obtained by reacting ethylene or a partially halogenated ethylene with chlorine to produce as a product of the process the next higher chlorinated olefinic derivative which comprises introducing into a chlorination zone a chlorination medium comprising chlorine reactant diluted with at least an equimolar amount of hydrogen chloride diluent; separately introducing the ethylenic compound into the reaction zone and providing a mol ratio of the ethylenic compound to chlorine reactant in excess of 5:1; reacting the ethylenic compound with chlorine under a pressure in excess of 50 p.s.i.g. in a chlorination zone; separating the reactor effluent into a vaporous fraction of the ethylenic compound and hydrogen chloride and a liquid fraction of the olefinic chloride derivative; separating and recovering the chlorinated olefinic derivative as a product of the process; separating hydrogen chloride from the vaporous fraction to produce a second liquid fraction; recycling at least a portion of the remaining vaporous fraction to the chlorination zone; oxidizing a portion of the second liquid fraction to provide chlorine from hydrogen chloride; and recycling oxidized and non-oxidized portions of recovered hydrogen chloride to the chlorination zone to aid in providing and maintaining said ratio of ethylenic compound to chlorine and the chlorination medium in the chlorination zone. Polychlorinated or polychlorobrominated ethanes may be fed to the chlorination zone to provide a mole ratio of between 0.5:1 and 10:1 of said polyhalogenated ethane: chlorine, and, if desired, this may be done in such a way that the endothermic dehydrohalogenation reaction resulting thermally balances the exothermic chlorination reaction. When 1,2-dichloroethane is fed in this way in the chlorination of ethylene, it may be obtained by operating the HCl-oxidation zone by feeding thereto unreacted ethylene from the vaporous fraction.
Patent GB-370581-A (GB)
Title: Improvements in compressors of refrigerating systems
IPC: F25B31/00
Filed: 1931-02-21
Abstract: 370,581. Refrigerating compressors. WEST, F. R., 10015, Grandville Avenue, Detroit, Michigan, U.S.A. Feb. 21, 1931, No. 5491. Convention date, Feb. 24, 1930. [Class 8 (i).] A compressor for sealed refrigerating systems comprises a cylinder body 8 reciprocated by an eccentric 13 over stationary pistons 3. The pistons are mounted on a post 2 by a wristpin and block structure 4, and the cylinder body has a cylindrical extension 9 to which and to the base of the post a bellows 16 is soldered to form a seal. The extension is pivotally supported from bearings 12 on the casing 1. A refrigerant inlet 6 extends through the post to the bottom of the wristpin. The compressed refrigerant is led through conduits 19 to a flexible conduit 20 secured to the casing 1 and leading to the refrigerating circuit. The parts are immersed in liquid which fills the casing.
Patent GB-536932-A (GB)
Title: Improvements in electric discharge devices of the type employing liquid cathodes
IPC: H01J13/34
Filed: 1940-03-28
Abstract: 536,932. Metal-vapour rectifiers. BRITISH THOMSON-HOUSTON CO., Ltd. March 28, 1940, No. 5612. Convention date, March 30, 1939. [Class 39 (i)] A mercury-vapour rectifier of the pool cathode type is provided with an anode for producing a holding arc enclosed in a casing of insulating material dipping into the cathode pole and provided with a narrow opening in the neighbourhood of which the material of the casing is so treated, as by sputtering with metal such as molybdenum, iron or tungsten, that it is wetted by the mercury giving a concave meniscus where the mercury touches the casing. The arrangement shown comprises a double-walled casing 11 containing a main anode 20 on a stem 26 attached to the casing by a glass seal 21, the joints being protected by screens 24, 25. The holding-on anode 30 is enclosed in a quartz casing 38 dipping into the mercury pool 27, and formed with a slit 40 through which the holding-on arc communicates with the discharge space. The surface of the quartz near the slot is sputtered with molybdenum from a wire 45 passing through an insulating sheath 47 to a resistance 52 connected to one phase 51 of a three-phase supply, another phase 50 of which yields the current to be rectified. The holding-on arc is anchored near the slot 40 by means of a molybdenum rod 42 projecting from the pool 27. A starting-anode 34 is also provided. Modifications are described in which the slot 40 is formed in a separate tube branching from the casing 38 and in which the holding-on arc is held at the required point of the cathode by a magnetic field. Specification 520,183 is referred to.
Patent GB-994687-A (GB)
Title: Segmented grinding ring
Inventor: ALEXANDER BOGOT
IPC: B02C15/04
Filed: 1964-02-11
Abstract: 994,687. Bowl mills. COMBUSTION ENGINEERING Inc. Feb. 11, 1964 [March 26, 1963], No. 5625/64. Heading B2A. The grinding ring 40 of a bowl mill comprises a plurality of segments 70 each being a one-piece unmachined cast construction and having grooves 50, 54 on its peripheral surfaces which are secured to the bowl by retaining rings 52, 56 respectively and each having an upstanding rib 62. The ring 52 is made of a malleable material so that it will conform to any irregularities on the surfaces of the grooves 50 and is held in position by means of hub cone 42 which is secured to the bowl by screws 46. The ring 56 is pressed down upon groove 54 by means of screws 58. The rings 52, 56 are each made of several separable parts. Each segment 70 has a recess 60. The bowl is provided with an extension ring 64. The material to be pulverized is fed through inlet 28. Air flows through annular space 31 to convey the ground material into a classifier 34.