baber/WOPTO huggingface dataset:
Patent GB-190418-A (GB)
Title: Improvements in or relating to sifters
IPC: F24B15/00
Filed: 1922-05-29
Abstract: 190,418. Boyce, R. D. May 29, 1922. Hand sieves.- A sieve suitable for calcium carbide, ashes and the like comprises a flexible tube a, b of leather, or textile or other fabric, which is divided centrally by a perforated diaphragm d sewn thereto. The ends of the tube may be closed by means of draw-strings, elastic bands, or the like e. The end b being closed, material to be sifted is placed in the end a which is in turn closed, and sifting is then commenced. The part a is rubbed round on the material to remove all small particles. In Fig. 3, the diaphragm c is fixed to a ring g having outwardly-curved edges h into which the ends of two flexible bags a, b can ba fastened by means of elastic bands j. In a modification, the diaphragm is mounted in a ring g, Fig. 5, which is secured in the centre of the tube a, b. To the ends of the tube are fastened elastic lips k, which may be closed by inserting them into internally-grooved bifurcated spring clips m.
Patent GB-755777-A (GB)
Title: A process for improving the adherence of bituminous substances to solid materials
IPC: C08L95/00
Filed: 1954-05-21
Abstract: Polyamides or their salts containing at least one acid amide group with a radicle of an organic acid which forms a water-insoluble amide and also containing at least one acid amide group with a radicle of an organic acid which forms a water-soluble amide are prepared by reacting polyamines with acids anhydrides or esters and heating. Suitable polyamines are ethylene diamine, symmetric diethyl ethylene diamine, hydroxyethyl ethylene diamine, propylene diamine, hexamethylene diamine, diethylene triamine, triethylene tetramine, and tetra ethylene pentamine.  Acids which form water-soluble amides are formic, acetic, propionic, butyric, valeric, glycolic, lactic and malonic; whilst acids which form water-insoluble amides are caprylic, lauric, oleic, stearic, erucic, montanic, resinic, and naphthenic and also tall oil.ALSO:The adherence of bituminous substances to solid materials is improved by adding to, or forming in, the bituminous substance or the ingredients serving for its preparation and/or the solid material or a portion thereof, a polyamide and/or a salt of a polyamide which contains at least one acid amide group with a radicle of an organic acid which forms a water-insoluble amide, and also containing at least one acid amide group with a radicle of an organic acid which forms a water-soluble amide.  Suitable polyamines for the preparation of the polyamides (see Group IV(b)) are ethylene diamine, symmetric diethylethylene diamine, hydroxy ethylethylene diamine, propylene diamine, hexamethylene diamine, diethylene triamine triethylene tetramine and tetraethylene pentamine; acids which form water-soluble amides are formic, acetic, proprionic, butyric, valeric, glycolic, lactic and malonic and their esters and anhydrides; acids which form water-insoluble amides are caprylic, lauric, oleic, stearic, euric, montanic, resinic, naphthenic (this can come from the bituminous substance itself) and tall oil, their esters and anhydrides.
Patent GB-541612-A (GB)
Title: Improvements in electric air break circuit breakers
IPC: H01H9/44
Filed: 1940-10-10
Abstract: 541,612. Arc-rupturing in switches. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 10, 1940, No. 15108. Convention date, Oct. 11, 1939. [Class 38 (v)] An air-break circuitbreaker, which may form part of a drop-down type switchgear structure, the plugs of one phase of which are shown at 7, 8, has an arc chute into which the arc is driven by a magnetic blow-out 10, 11 and forced to take a sinuous, or zigzag shape, the arc being drawn between a fixed contact 2<SP>1</SP> and movable contact pivoted at 4, and transferred to runners 10', 11<SP>1</SP>. The chute comprises a pair of arc-resistant side walls, 12, 13, for example, asbestos board, each provided with parallel fins 12', 13<SP>1</SP> interleaving with one another, Fig. 6, and curvilinearly tapered so that at the line of intersection the surfaces are at an angle a of 20 or 30 degrees. The chute terminates in a cooling structure comprising a rectangular frame made of a top and bottom plate 23, 24, and side plates which are secured at. 27 to the side walls 12, 13 and recessed to receive a pile of ccrrugated-copper plates alternating with fibre plates, the edges of which overhang the copper plates in the direction corresponding to Fig. 2 and evolve a de-ionizing gas when encountered by the arc. The sheets may be more closely spaced at the centre of the stack, but alternatively, may be of non-gas evolving material. The stack could be replaced by a unitary fibre sheet, slotted either longitudinally or transversely of the exhaust opening. In order to subdivide the issuing exhaust gases, a wedge-shaped member 30" is placed in the middle of the stack, the sheets in which are inclined correspondingly as shown in Fig. 2. This wedge co-operates with a similar part 30 on the insulating cover 29 of the casing 28, so deflecting the gases into up and down streams, as shown by the arrows in Fig. 2. The cover 22 also has a vertical deflector 31 for each phase, Fig. 8, the effect of which is to subdivide further the up and down streams which emerge through backwardly-directed .louvres 32 in casing 28. The phases are separated by insulating partitions 33 fitting in slots 34 in the deflectors 31.
Patent GB-612214-A (GB)
Title: Improvements relating to waterborne craft
IPC: B63B19/00
Filed: 1946-05-18
Abstract: 612,214. Cabins and saloons. WOODS, H. B. May 18, 1946, No. 15112. [Class 113 (i)] A watercraft c has a saloon-head comprising two telescopic sections a and b which are slidable in a fore-and-aft direction to any desired position. The coaming along the edge of the cockpit is provided with tracks in which move slides or pulleys carried by the saloon sections. Locking means include spring-pressed plungers co-operating with periodic slots in the tracks.
Patent GB-573114-A (GB)
Title: Improvements in and relating to resinous condensation products and moulding compositions produced therefrom
IPC: C08C19/00
Filed: 1942-10-28
Abstract: Resinous condensation products suitable for use in moulding compositions and insoluble in benzole are prepared from a phenol, formaldehyde and oxidized rubber prepared as described in Specifications 417,912, 462,613 and 462,627, [all in Group V], by reacting the components in presence of a basic catalyst and heating the mixture until the resin is formed and precipitated. In examples: (1) a one-stage resin is prepared by heating 200 parts of oxidized rubber, 1000 parts cresol, 1000 parts 40 per cent formaldehyde and 25 parts .850 ammonia solution under reflux for 2 hours at 95 DEG  C. and then dehydrating under vacuum; (2) a two-stage resin is prepared by reacting 20 gs. oxidized rubber, 100 gs. phenol, 80 c.cm. formaldehyde and 20 c.c. 10 per cent ammonia, and adding hexamethylene tetramine to the dehydrated product to which asbestos may be added as filler to give a moulding composition suitable for the fabrication of brake linings.  The oxidized rubber may contain a proportion of reclaim rubber prepared as described in Specification 573,049. Specifications 538,922 and 572,828 also are referred to.
Patent GB-1103640-A (GB)
Title: Magnetic thin film data storage unit
IPC: G11C11/04
Filed: 1966-04-05
Abstract: 1,103,640. Magnetic information storage apparatus. GENERAL PRECISION SYSTEMS Inc. 5 April, 1966 [4 May, 1965], No. 15122/66. Heading H3B. A data storage unit includes four magnetic storage elements, each consisting of a non- magnetic wire coated with magnetic material, connected in a bridge-like arrangement with a current source connected to one pair of diagonal points and a sense amplifier connected to the other pair of diagonal points, an insulated wire being coupled to at least one of the plated wires and being connected to a second current source. Preferably each insulated wire is coupled to a storage region in each of two plated wires in opposite arms of the bridge, and such storage regions are equidistant from the respective diagonal points connected to the sense amplifier. Each bridge arrangement may represent a multi-bit word, with each insulated wire controlling storage of a different digit, or each arrangement may represent a different digit, with each insulated wire representing a different word. The plated wires and the insulated wires are interwoven to form a compact structure.
Patent GB-856366-A (GB)
Title: Process for the production of p-aminophenol from nitrobenzene
Inventor: FRENCH GERALD PETER
IPC: C07C213/02
Filed: 1958-05-12
Abstract: A process for the catalytic reduction of nitrobenzene to p-amino phenol comprises adding the nitrobenzene and hydrogen to a suspension of a hydrogenation catalyst consisting of between 0,1 and 1% by weight of platinum deposited on an inert support in an acidic aqueous solution containing from 1 to 25% by weight of sulphuric acid at a temperature of from 50 to 145 DEG C., the partial pressure of hydrogen being maintained below 760 mms. of mercury, characterised in that the aqueous suspension of the hydrogenation catalyst also contains a finely divided material capable of absorbing nitrobenzene and the amount of nitrobenzene added is such that for a substantial period of time the amount of nitrobenzene present in the reaction mixture exceeds the amount capable of being dissolved in the suspension but at no time does the amount of nitrobenzene exceed the total amount capable of being dissolved in the suspension and absorbed by the finely divided absorbent material.  The reaction is preferably carried out using between 0,15 and 1% by weight based on the aqueous acid, of the finely divided material, e.g. porous carbon or kieselguhr, at elevated temperature and atmospheric pressure and in the presence of cationic surface active agents.  Examples are given.  Specification 713,622 is referred to.
Patent GB-1374092-A (GB)
Title: Fault detection systems for document sorting machines
IPC: G06K13/067
Filed: 1972-01-17
Abstract: 1374092 Detecting faults on endless conveyers; letter sorting MASSON SCOTT THRISSELL ENG Ltd 17 Jan 1972 [15 May 1971] 15180/71 Heading B8A Each endless conveyer 22 in a series of conveyers feeding letters to sorting compartments 12, has a series of pusher bars 25 for engaging the letters. The pushers 25 are connected to spaced conveyer belts 20, (21) (Fig. 2, not shown). Each bar 25 carries a blade 52 (Fig. 4) which is normally positioned horizontally (Fig. 5), and thus clear of a photo-electric light beam 55. If a letter becomes in jammed engagement with a bar 25, the blade 52 is deflected into a position 54 in which it obstructs the beam. This initiates a visible or audible warning to stop the conveyer drive. Due to the fact that the tips of all the blades follow a locus 60, as the blades pass with the belts 20, 21, around the end pulleys of the conveyer, the beam 55 will be obstructed by the tips of all the blades, unless the beam is disposed in a zone t (Fig. 6). The beam can however be aligned in a larger zone D if, by suitable logic circuitry (not described), the response of the photo-electric mechanism is suppressed for an interval while each blade passes around a sector of the travel around the return pulley corresponding to the zone D. Each conveyer 22 is the same as that described in Specification 1,374,091.
Patent GB-916367-A (GB)
Title: Manufacture of leuco sulphuric acid esters of vat dyestuffs
IPC: C09B9/00
Filed: 1959-05-04
Abstract: Leucosulphuric acid esters of vat dyestuffs are made by reducing the vat dyestuff at a temperature in the range of about 30 DEG  to 75 DEG C. with a metal and an inorganic salt, an organic salt or an anhydrous acid in the presence of a compound of the formula:- <FORM:0916367/IV (b)/1> where R1 is alkyl and R2 is alkyl or aryl, the inorganic and organic salts being soluble in said compound, and the leuco compound so obtained being reacted at a temperature between about 20 DEG  to 70 DEG C. with a sulphating agent in the presence of the compound of the above formula.  Reducing agents specified are zinc dust, iron or copper powder or Devarda's alloy and glacial acetic acid, mono-, di- or tri-chloroacetic acid, hydrochloric acid, propionic acid, formic acid, lithium chloride, lithium sulphate, calcium chloride, magnesium chloride, potassium ethyl sulphate, sodium benzenesulphonate or sodium naphthalene-1- sulphonate. Sulphating agents specified are sulphur trioxide and chlorosulphonic acid.  Examples are given.
Patent GB-1580967-A (GB)
Title: Manufacture of monoacetals of aromatic 1,2-diketones
IPC: C07C45/71
Filed: 1977-04-13
Abstract: The monoacetals of aromatic 1,2-diketones of the formula I are prepared by reacting the corresponding 1,2-diketones with an alkylating agent  (R<1>)nX  and an alkoxide  (R<2>O)mMe  in an organic solvent. The substituents in the formula I are as defined in Claim 1. The acyclic, asymmetric monoacetals prepared are suitable as photoinitiators for radiation-curable mixtures. <IMAGE>
Patent GB-110606-A (GB)
Title: Improvements in Pressure-releasing Devices for the Rollers of Clothes Wringers.
Inventor: HEMENWAY JOHN FRANCIS
IPC: D06F45/00
Filed: 1916-10-26
Abstract: 110,606. Hemenway, J. F. Oct. 26, 1916. Wringers, roller-separating arrangements for.- The top bar 13, slidably mounted in the side bars, is normally held by a pivoted latch 22 which is automatically pushed aside, by means connected with the upper roller, so as to release the top-bar. when the operator's fingers, or a foreign body, is drawn between the rollers. The latch 22 is formed with ears 27 with which co-operates the cam end 29 of a stem 25 formed with a cap 24 fitting over the axle 6 of the upper roller. A spring 29 retains the latch in position. The pressure bar 10 is held down by a spring 12 fixed to the bar 11 which is capable of movement relatively to the top-bar by screws 14 and recesses 15.
Patent GB-296807-A (GB)
Title: Improvements in and connected with the axles of wheels for vehicles
IPC: B60B35/18
Filed: 1927-06-08
Abstract: 296,807. Ajax Trucks, Ltd., and Jackson, P. Rothwell-. June 8, 1927. Axles; wheels and axles, arrangement of; mounting undercarriages.-An axle for vehicles, such as trolleys, and adapted to carry wheels at both ends thereof or a single wheel traversing the axle, comprises a bar b arranged between the sidemembers a of the frame or brackets secured thereto and detachably connected to the frame by bolts d screwed into axial holes in the ends of the axle. The axle is formed with reduced ends to provide abutment shoulders f for the inner ends of the wheel bearings or hubs. When ball bearings are used, spaces are left between the ends of the axle and the frame members a and the inner races e<1> are clamped against the shoulders f by washers g when the bolts dare tightened up. The outer ends of the holes in the axle are left unthreaded to engage plain portions d<1> of the bolts. An axle for a traversing wheel is of uniform diameter throughout its length. The side members of the frame may be fitted with brackets having flanges engaging the side-members, the bolts d being passed through both the brackets and side-members or through the brackets only.
Patent GB-509862-A (GB)
Title: Improvements in and relating to electric transformers
IPC: H01F27/38
Filed: 1938-05-23
Abstract: 509,862. Transformers. BRITISH THOMSONHOUSTON CO., Ltd. May 23, 1938, No. 15332. Convention date, May 24, 1937. [Class 38 (ii)] To eliminate harmonics, more particularly the fifth, in a two-phase or single-phase transformer, the yoke carrying the flux of a main winding is divided to provide two paths for the flux, and is energised by means of a second winding supplied in quadrature to the main winding. The arrangement is such that for each closed magnetic circuit the magnetomotive forces for the harmonics to be eliminated sum up to zero. In a two-phase arrangement, shown in Fig. 1, the second winding is formed by the other phase winding. The phase windings 5a, 5b and 6a, 6b are arranged on limbs 1, 3 and 2, 4 which join the corners of a rectangular yoke system 12, 23, 34, 41. In a modification of this one of the limbs may be arranged as a diagonal to the yoke rectangle. In a single-phase arrangement, as shown in Fig. 6, the yoke is slotted to provide two flux paths for the main flux and the auxiliary energising windings 6 may be distributed over the yoke as shown or mounted on the bridging member 24<1>. In a modification of this a single slot is provided, the bridging member 24<1> being omitted. Specification 470,145 is referred to.
Patent GB-585961-A (GB)
Title: Improvements in or relating to curtain suspension fixtures
IPC: A47H2/00
Filed: 1944-08-11
Abstract: 585,961. Suspending curtains. HYGIENIC WIRE WORKS, Ltd., DOWDALL, A. E., DOWDALL, J. T., and HAYCRAFT, P. E, Aug. 11, 1944, No. 15333. [Class 52 (v)] A sheet metal curtain suspension fixture comprises a pair of fixing plates 10, a vertical fascia board 17, the ends of which are turned to form flanges 19 and curtain rails and associated roller gear formed as a unit with the fascia board. The flanges 19 are detachably connected to the plates 10 by brackets 34, bolts 15 and wing nuts 36. The rails 37, 37a are of inverted U-shape and are secured at their overlapping inner ends to a Z-shaped angle bracket attached to the fascia board. Carriages 48 carrying curtain suspension rings 50 are drawn along the rails by a continuous cord 52 attached to the leading carriage 51 on each rail and adapted to pass over a horizontal pulley 53 and two vertical pulleys 54. Hooks 72 pressed out from the front face of each fixing plate 10 provide attachment members for the ends of the curtains. Specifications 585,962, 585,963, 585,964, 585,965, [Group X], and 585,966 are referred to.
Patent GB-1080185-A (GB)
Title: Process for retarding deterioration of polyolefin plastics
Inventor: CYBA HENRYK ANTONI
IPC: C08K5/18
Filed: 1965-04-12
Abstract: Polyolefins are stabilized against oxidative deterioration by incorporating a compound of formula <FORM:1080185/C3/1> where X is C1- 12 alkylene, R and R1 are cyclohexyl or C3- 20 secondary alkyl, and R11 and R111\h are hydrogen, cyclohexyl or C3- 20 secondary alkyl.  Specified polyolefins are polyethylene, polypropylene and polybutylene.  The compositions may also comprise fillers, e.g. silicates, pigments, e.g. carbon black, zinc oxide and titanium oxide, and other stabilizers, e.g. nickelbis-dithiocarbonates, nickel-bis-dihydroxypolyalkylphenol sulphides, dilaury-b -mercaptodipropionate, dihydroxy tetra-alkyl sulphides, dihydroxytetralkyl methanes, phenyl naphthylamines, phenothiazine, alkylated phenols, diphenyl-p-phenylene diamine, salicylic acid esters, hydroxybenzophenones and nickel and cobalt salts of o-hydroxydiazobenzene.  The aromatic nuclei of the compounds may contain inert substituents, and many suitable compounds are listed. They may be incorporated by mixing or added in solution in an alcohol or hydrocarbon. In examples polyethylene is stabilized by incorporating (I) 4,41-di sec. butylamino and dicyclohexylamino diphenylmethane, (II) 4,41 - dicyclohexylamino diphenylmethane, (III) 4,41-diisopropylamino and di sec. butylamino diphenylmethane, (IV) 4,41-dicyclohexylamino, diisopropylamino and di sec. butylamino diphenylpropane, and (V) 4,41-di(isopropylamino) - 3,31 - dimethoxy and 4,41-di(sec. butylamino) - 2,5,21,51 - tetramethoxy diphenylmethane; (VI) polypropylene is stabilized with 4,41-dicyclohexylamino diphenylpropane and 4,41-di sec. butylamino diphenylmethane; and (VII) polybutylene is stabilized with 4,41-dicyclohexylamino diphenylpropane.
Patent GB-821584-A (GB)
Title: Improvements in caravans
IPC: B60P3/34
Filed: 1957-05-15
Abstract: 821,584. Collapsible caravans. RAULINE. M. May 15, 1957 [July 5, 1956], No. 15371/57. Class 108(1) Body parts 1 and 3 of an expandable caravan are mounted on chassis tubes 8 and 9 respectively which telescope over tubes 10. In the towing position the tubes 8, 9 abut and are locked together and may screw on to the ends of the tubes 10, but when the caravan is to be expanded the parts 1 and 3 each on its own chassis portion are separated, tubes 14 are positioned to connect the parts and support a framework and cover for the additional space 15, and the tubes 10 then removed. Rest bars or other supports are provided.
Patent GB-590181-A (GB)
Title: Improvements in servo units
IPC: F15B13/10
Filed: 1944-08-11
Abstract: 590,181. Fluid-preseure servomotors. JACK & HEINTZ RESEARCH CORPORATION. Aug. 11, 1944, No. 15377. Convention date, Aug. 25, 1943. [Class 135] A hydraulic servomotorfor operating the control surfaces of aircraft comprises a doubleacting piston 2 moving in a cylinder 1, a master valve 14 for supplying liquid under pressure through separate passages 27, 29 selectively to either side of the piston, a byepass 31 between the passages for rendering the servomotor ineffective when open, a valve 22 in the byepass for closing the same against the action of loading means 23, and,further means adapted to connect the two sides of the piston when an abnormal pressure develops in the cylinder due to a predetermined external force on the piston. The piston has a piston-rod 4 connected to the aircraft control surface through a bell-crank lever 8. The two cylinder spaces 28, 30 are connected by the passages 27, 29 with pipes 12, 13 respectively, the latter being selectively connected to' an automatically controlled hydraulic system by the manually-operated master valve 14. The byepass valve sleeve 22 has a port 25 urged into registry with an annular passage 26 by a loading spring 23 surrounding a plunger 24. The sleeve 22 is urged to the left to close the port 25 whilst still allowing the pipe 12 and the passage 27 to communicate by the annular passage 26, by means of a solenoid 18, the core of which is integral with the plunger 24. The passages 27, 29 are also connected even when the sleeve valve 22 is closed by passages 40, 41 leading to a housing containing a further byepass valve in the form of a ball normally maintained in a central position cutting off the passages 40, 41 by two opposed spring plungers. The bell-crank lever 8 is pivoted on a fixed support 11 and the cylinder 1 is carried on ball bearing trunnions 48 supported in arms 47 on a fixed base 44.