baber/WOPTO huggingface dataset:
Patent GB-735836-A (GB)
Title: Stabilization of sulphur trioxide in the -a-form
IPC: C01B17/90
Filed: 1953-10-02
Abstract: Sulphur trioxide is stabilized as the a  form by mixing with the liquid trioxide 0.1-1 per cent of neutral methyl sulphate. Where the sulphur trioxide is being continuously produced, the methyl sulphate may be continuously added, or the sulphur trioxide may be distilled on to the methyl sulphate.  Alternatively the methyl sulphate may be produced in situ by introducing an inorganic substance, e.g. di-methyl ether, which will form methyl sulphate by reaction with the sulphuric anhydride.  Specifications 526,555 and 590,054 are referred to.
Patent GB-766312-A (GB)
Title: Improvements in or relating to collapsible building structures
IPC: E04B1/343
Filed: 1951-11-20
Abstract: 766,312. Collapsible buildings; tents. SMITH, C. A. V., and FEASEY, J. Nov. 18, 1952 [Nov. 20, 1951], No. 27209/51. Class 20 (1) A collapsible building structure comprises a sheet of flexible material supported on and secured to a series of parallel hoop-like ribs which are each formed by bowing a resilient rod-like member and providing means for maintaining its bowed shape, the ribs being interconnected by purlins. Fig. 1 shows a portable shelter for an aircraft constructed in accordance with the invention. It consists of a sheet 10 of rubberized textile which is secured to and supported by a number of parallel ribs 11 bowed to a semicircular shape. The ribs consist of lengths 12 of rattan rod or light metal tube which are joined by socket members 13. The cover 10 is secured to the ribs by loops or by spraying cocooning material over the rib and the adjoining surface of the cover. Alternatively the cover may consist wholly of the cocooning material which is sprayed on to wire netting 24 stretched between the ribs. Each rib is maintained in its bowed shape either by a wire 16 which ties the ends together or by-engaging the ends in socket members driven into the ground at the appropriate spacing. The ribs are connected by purlins 18, the joints between the ribs and purlins being of a universal type or as described in Specification 766,315. Fig. 7 shows a larger type of building having curved ribs 33 spaced apart by purlins 36. From the joints between the ribs and purlins extend diagonal brace members 37 which meet at a connector 38 standing slightly outside the cylindrical surface defined by the ribs. The covering is applied over the ribs and bracing members.
Patent GB-616618-A (GB)
Title: Improvements in or relating to pumps for delivering liquids
IPC: F04B19/02
Filed: 1946-09-11
Abstract: 616,618. Rotary pumps. MEGATOR PUMPS & COMPRESSORS, Ltd., and McCOMBIE, F. W. Sept. 11, 1946, No. 27304. [Class 110 (ii)] The pump, which is of the type described in Specification 592,432, has two passages 17, 16 leading to the delivery pipe 4, so that liquid is not left at the bottom of the casing 1. Air and gases, which separate out, pass through the passage 17. Instead of a deflector plate 16 being used, the passage 16 may be outside the casing. In a modification, the pump is submerged in liquid inside a tank.
Patent GB-140720-A (GB)
Title: Belt pulleys
IPC: F16H55/46
Filed: 1919-11-06
Abstract: 140,720. Fairweather, W., (Singer Manufacturing Co.). Nov. 6, 1919. Guards.-To prevent belts accidentally unshipped from sewing-machine and like pulleys from injury by winding round the pulley hubs, wings 5, 5<1> integral with the web or spokes 4 throw the displaced belt on to the shaft beyond the hub 3. In the form shown, the wings 5<1> are arranged on opposite sides of a central slot 7, and the pulley is then broken at the points 9 and bolts 8 are passed through the wings to secure the pulley on its shaft.
Patent GB-875995-A (GB)
Title: Basic heterocyclic azo dyestuffs
IPC: C09B44/10
Filed: 1958-08-26
Abstract: The invention comprises dyes of formula:-  <FORM:0875995/IV(c)/1> where R is the residue of a 5- or 6-membered heterocyclic ring, R1 is an alkyl, aralkyl or aryl radical, R2 is an alkyl, cycloalkyl or aralkyl radical, A is a mono- or bi-valent radical of an aromatic or heteroycolic amine, m is 1 or 2 and X is an acid radical.  They are made by quaternizing heterocyclic dyes of formula:- <FORM:0875995/IV(c)/2> the latter being obtained by treating with alkalis the corresponding basic dyes, isolated as salts, of formula:- <FORM:0875995/IV(c)/3> The basic dyes are made in conventional fashion from appropriate heterocyclic and amine components. Representative of many specified heterocyclic components are:-1, 3, 3 3-trimethyl-5-nitro- 2-methylene-indoline, alkyl esters and amides of 1, 3, 3-trimethyl-2-methylene-indolene-5-carboxylic acid, 1, 3, 3-trimethyl- 5-cyano- 2-methylene indolene, 1, 3, 3-trimethyl-benzo-(6, 7)-2-methylene-indolene, and 1, 3-dimethyl-2-methylene-quinoxaline.  Representative of indicated A components are:-aniline and its halo and alkoxy derivatives, aminodiphenylamines, benzidine, naphthylamines, aminoazobenzenes, aminodiphenyls and aminobenzthiazoles.  Specified alkylating agents are dimethyl and diethyl sulphate, benzyl chloride, methyl iodide and toluene sulphonic acid esters.  The dyes colour textiles, acetate rayon, paper, coir and leather.  Dyes free from sulphonic and carboxylic acid groups are especially suitable for colouring polyacrylonitrile.  In examples, which illustrate the preparation of the dyes and their use in colouring acetate rayon and polyacrylonitrile fibres in yellow shades, further heterocyclic residues present are derived from 1-methyl- 2-formylbenzimidazole, 1, 3, 4-trimethyl- 6-methylene-dihydropyrimidon-2, pyridine, quinoline and 1-methyl-2-formylbenz-thiazol and -oxazole.  An example is also provided of the preparation of an ink vide Group XV.
Patent GB-467080-A (GB)
Title: Alkaline earth metal double salts of organic acids
IPC: C07F3/00
Filed: 1935-10-04
Abstract: Medicinal compounds having varied therapeutic qualities are prepared by reacting an oxide of calcium, strontium or magnesium with a mono-ester of a dibasic aliphatic acid and benzoic acid or a nuclear substituted benzoic acid in substantially equimolecular proportions. Thus one mol. of slaked lime may be heated and stirred in aqueous suspension with one mol. of benzoic acid, the temperature lowered to 80 DEG  C., and one mol. of the monobenzyl ester of succinic acid added whereupon the double calcium salt of benzoic and monobenzyl succinic acid separates.  In other examples o-ethoxy benzoic acid and acetyl o-hydroxy benzoic acid are employed in place of benzoic acid in the above example, but in the latter case the reaction is carried out in anhydrous alcohol to prevent hydrolysis of the acetyl group. Amino groups may also be present, and the radicle of the mono ester of the dibasic acid may be an alkyl, aralkyl, or substituted aralkyl radicle such as hydroxy benzyl, ethoxy benzyl, acetyl hydroxy benzyl, or amino benzyl.  Samples have been furnished under Sect. 2 (5) of the magnesium double salt of p-amino-benzoic acid and the mono-anisyl ester of adipic acid, the magnesium double salt of p-hydroxy-benzoic acid and the monoethyl ester of malonic acid, the magnesium double salt of benzoic acid and the monobenzyl ester of succinic acid, and the calcium double salt of p-amino-benzoic acid and the mono-benzyl ester of succinic acid.
Patent GB-444690-A (GB)
Title: Improvements in or relating to the tanning of hides and skins
Inventor: Merritt, Matthew Melville
IPC: C14C3/06
Filed: 1934-09-25
Abstract: 444,690. Making leather. TANNING PROCESS CO., 140, Federal Street, Boston, U.S.A.-(Assignees of Merritt, M. M. ; Middleton, Massachusetts, U.S.A.) Sept. 25, 1934, No. 27464. Convention date, Oct. 2, 1933. [Class 76] A process of chrome tanning consists in treating the hide with a soluble chrome tanning substance, a soluble chrome substance not in itself tanning, and with a substance (in particular sodium sulphate), adapted to increase the tanning effect and subsequently treating, the hide with a reducing agent to render the non-self tanning chrome substance effective. A suitable tanning bath may be prepared by mixing in aqueous solution basic chromic sulphate, sodium dichromate and sulphuric acid in sufficient quantity to produce normal chromic sulphate, and to convert part of the dichromate into sodium sulphate and chromic acid. After treatment for say half an hour part of the liquor is drawn off and a reducing agent, e.g. sodium thiosulphate, is added. When chromium salts other than the sulphate are used sodium sulphate is added to produce the increased tanning effect referred to. The tanning materials may be added to the tanning bath in canvas bags. Specification 12849 /93, [Class 76], is referred to.
Patent GB-784391-A (GB)
Title: Production of silica-containing aerogels
IPC: C01B33/148
Filed: 1954-09-23
Abstract: A silica or silica-alumina aerogel is prepared by heating a hydrogel, which is substantially free from metal impurities removable by washing with distilled water (considered to be less than 0.001 per cent), in a closed system to a temperature of at least 340 DEG  C. and then releasing water vapour from the closed system, at a rate such that the gel structure is not injured, until substantially all of the water is released from the closed system.  The temperature of heating may be as high as, e.g. 500 DEG  C., but the range of 370-450 DEG  C. is preferred (370 DEG  C. being the critical temperature of water).  The pressure is preferably greater than 10,000 p.s.i.  The gel preferably occupies 50-75 per cent of the volume of the system. The silica hydrogel is prepared either (a) by gelling in situ a hydrosol substantially free from such metal impurities, or (b) by washing a hydrogel containing such impurities with distilled water, demineralized water, acidified distilled water, acidified demineralized water, or acidified natural water containing 10-300 parts per million of inorganic matter.  In method (a), the hydrosol may be prepared by passing a water-soluble silicate through a bed of cation-exchange material in hydrogen form so as to produce a product having a pH of 1.5-3.0, preferably 2.0-2.5, and a silica content of 5-15 per cent; or by reacting sodium silicate with sulphuric, phosphoric or hydrochloric acid so as to produce a product having a pH of 2-4 and a silica content of 5-15 per cent, preferably 6-10 per cent cooling to below 10 DEG  C., removing precipitated electrolyte by filtration or centrifugation, passing through a bed of cation-exchange resin in hydrogen form and then optionally through a bed of anion-exchange resin.  Various cation-exchange resins are specified.  In method (b) the pH of acid wash water may be 1.5-5 and is preferably 2-3.  Acids specified are sulphuric, hydrochloric, phosphoric formic and acetic acid.  Specification 649,896 and U.S.A. Specifications 2,093,454 and 2,249,767 are referred to.
Patent GB-911377-A (GB)
Title: Method of, and means for, testing conductors used in electrical systems
Inventor: TALBERT DAVID GODWIN
IPC: G01R31/58
Filed: 1960-08-09
Abstract: 911,377. Protective cut-out systems. LUCAS (INDUSTRIES) Ltd., JOSEPH. Sept. 1, 1961 [Aug. 9, 1960], No. 27533/60. Class 38 (5). [Also in Group XXXVI] In a method of testing for the presence of open- or short-circuit faults in a set of three conductors 3, 4, 5, Fig. 1, for example for connecting a control device 6 to an instrument 7, signals from a continuous wave or pulse generator 9 are supplied to the conductors 3, 4 which at the other end are bridged by the primary winding of a transformer 18, the secondary of which supplies signals over the conductors 5. At the generator end, the conductor 5 is connected to one terminal D of the input terminals C, D of a phase-sensitive detector (not shown). In the absence of a fault on the conductors 3, 4, 5, the signals at terminals C, D are such that there is no input to the detector and an alarm lamp operated by the detector is illuminated. However, when a fault occurs the signals at D will be absent or will be reversed in phase or reduced in amplitude with the result that the detector is operated and the lamp extinguished. The detector (Fig. 2, not shown) is the same as that described in Specification 910,396.
Patent GB-208517-A (GB)
Title: Improvements in steam-driven vehicles
IPC: B61C1/12
Filed: 1923-11-02
Abstract: 208,517. Zoelly, H. Dec. 17, 1922, [Convention date]. Exhaust, disposing of.-Hot furnace gas in steam driven vehicles is received with saturated cooling air from the condenser so as to avoid the formation of mist when such air reaches the atmosphere. In the locomotive shown in the drawings, a steam turbine 2 drives the wheels and a fan 3 driven by an auxiliary motor 4 forces the furnace gases along two pipes 11, 12 one on each side of the engine. From the rear ends of these pipes the gases are led through passages 13 into the exhaust conduit 10 where they mix with cooling air from the condenser, the mixture emerging into the atmosphere through the opening 14. The air is drawn through the condenser by the fan 9. Only a portion of the furnace gases may be used in this way. Further, the cooling air may be led to the front of the locomotive and there mixed with the furnace gases before discharge.
Patent GB-533137-A (GB)
Title: Improvements in or relating to dispensing containers and closures therefor
IPC: B65D47/26
Filed: 1939-10-12
Abstract: 533,137. Closures for containers. STEVENS, A. H. (Straub & Co., W. F.). Oct. 12, 1939, No. 27782. [Class 125 (iii)] A dispensing closure for containers has a plate 29 which can slide to close the pouring opening 28 in the cap 20; an upward flange 30 extends along the edge of the opening 28 and acts as an abutment for the curved end 33 of the plate 29 when it is moved to cut off a discharging stream and to close the opening 28. The plate is formed from a flat strip of sheet metal and is transversely folded to form a finger piece or handle 32. The rear part 34 is narrower than the front sealing part 33, and the plate is held by guide lugs or tongues 35, 37. When the finger piece 32 is formed, the parts 33, 34 may be left in slightly divergent planes so that it remains springy when in working position. In the modification shown in Fig. 5 the cover plate 40 swings on a pivot 41 and its curved edge 43 abuts against the flange 44 at the side of the dispensing opening in the cap 42. A stiffening flange 48 is provided at the rear edge of the plate and is extended to form a finger grip 49. Movement of the plate is restricted by a pin 46 in a slot 47. Vent holes 50, 51 may be provided.
Patent GB-1143985-A (GB)
Title: Drive system for the rolls of a four-roll stand
Inventor: WESENDORF KURT
IPC: B21B35/12
Filed: 1967-06-16
Abstract: 1,143,985. Rolling. SCHWERMASCHINENBAU ERNST THALMANN VEB. 16 June, 1967, No. 27939/67. Heading B3M. The rolls 16-16<SP>111</SP> of a rolling mill are driven from a central spur gear 7 (Fig. 4, in plan) through respective spur gears 9-9<SP>111</SP>, bevel gears 10-10<SP>111</SP>, 12-12<SP>111</SP>, and clutches 14- 14<SP>111</SP>. The central spur gear is itself rotated by a motor 18 driving gears 3-5 through a clutch 1.
Patent GB-718824-A (GB)
Title: Improvements in or relating to flameproof electric lighting fittings
IPC: F21V25/12
Filed: 1951-11-28
Abstract: 718,824. Lighting fittings. GENERAL ELECTRIC CO., Ltd., and HUBBOLD, S. Nov. 13, 1952, [Nov. 28, 1951.] No. 27954/51. Class 75 (4). In a flameproof lighting fitting having an elongated lamp 24 mounted in an explosion resistant light-transmitting tube 20, the tube 20 has end portions 18, 19 slidably received in guides 17, 17a in end housings 12, 12a of the fitting and arranged so that the tube can be moved axially, without detachment of any part of the housing wall, to disengage the end portion 19 from its guide 17a and thereafter swing downwardy to give access thereto for removal or insertion of the lamp. The end portion 18 of the tube is formed with bayonet grooves to co-operate with projections on a plate 21 to prevent axial displacement of the tube in one angular position, the tube being held in this position by a bolt 27 clamping a flange 26 on the end portion 18 to its end housing 12a. Release of the bolt 27 allows rotation of the tube to a position where the bayonet grooves on the end portion 18 allow axial movement of the tube. A chain 28 supports the end portion 19 when disengaged from its guide 17a. The end housing parts 12, 12a are bolted to upper housing parts 11, 11a which house the ancillary equipment and which are spacedly connected by a wiring conduit 10.
Patent GB-1489704-A (GB)
Title: Hydrogen-rich gas generator
IPC: C01B3/38
Filed: 1975-07-03
Abstract: 1489704 Internal combustion NATIONAL AERONAUTICS & SPACE ADMINISTRATION 3 July 1975 [10 July 1974] 27970/75 Heading F1B [Also in Divisions C5 and F4]  Hydrogen-rich-gas is produced in an apparatus which comprises a heat exchanger in a combustion chamber, a burner and an igniter, means for injecting a spray of liquid hydrocarbon into chamber means for vapourising hydrocarbon, a two way valve which can deliver liquid hydrocarbon to the chamber or to the vapourizing means and thence to the chamber, and a heat sensor actuated when the air reaches a predetermined temperature to operate the valve to cut-off the liquid supply and substitute the vapour supply. Burner 16 comprises a start-up nozzle 54 Fig.6 for supplying liquid fuel to the combusion chamber and two helical tubes 70, 72, for supplying the vapourized fuel to the chamber. In operation air is supplied to heat exchanger 20 and passes between tubes 28, 30 guided by baffles 36, 38, to be heated by the gas passing through the tubes, and then passes to burner 16. At start-up, liquid fuel is pumped from source 50 through two-way valve 52 into the startup nozzle 54 of the burner, and is ignited by a spark-plug 58. When sensor 62 detects an air temperature above that of the liquid fuel dew point, valve 52 is actuated so that the fuel is directed to a vapourizing coil 64 to be mixed with the preheated air, and then passed to the burner. Water may be added to the fuel at the entrance to coil 64. In a modification, product gas is used for recirculation requiring the use of a gas-gas aspirator 80 Fig. 7. In a further modification, the lean exhaust gas from an I.C. engine is mixed with the preheated air Fig.8 (not shown). The product gas is fed back to be mixed with the incoming air/ fuel mixture without leading the product gas out of the burner Fig.9 (not shown). A catalyst (110) may be included in the combusion chamber Fig.10 (not shown).
Patent GB-446072-A (GB)
Title: Improvements in connection with locks for doors
IPC: E05B55/00
Filed: 1935-10-11
Abstract: 446,072. Locks and latches. DOWLING, P., 1, Warren Street, Dublin. Oct. 11, 1935, No. 28036. [Class 44] A single bolt lock comprises a latch bolt 1 which in the position shown can slide into registering slots 9<1> formed in four sliders 2-5 against the action of a spring 10 abutting against a pin 9 on the bolt, but when the bolt is moved further to the left by a key acting on a projection 14 the sliders 2-5 drop by gravity to bring parts 15 behind the bolt to dead-lock it. To release the bolt the sliders are raised by the key until the slots 9<1> are again brought into register with the end of the bolt which is then automatically brought into latching position by a spring 8. Both springs 8, 10 have caps 21 and abut against a stop 12 on the casing in the latching position of the bolt. A follower 13 on a handle spindle enables the latch to be withdrawn. The sliders 2-5 completely fill the depth between front and back of the lock case as also do the bolt 1 and caps 21 as well as a guide block 18 to which the lock cover is secured by screws. Specification 380,698 is referred to.
Patent GB-383015-A (GB)
Title: Improvements in article feeding mechanism for wrapping machines
IPC: B65B35/24
Filed: 1931-10-09
Abstract: 383,015. Wrapping machines ; conveyers. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(American Machine & Foundry Co. ; 511, 5th Avenue, New York, U.S.A.) Oct. 9, 1931, No. 28066. [Class 94 (i).] The mechanism by which loaves and like articles are moved through wrapping machines is provided with means whereby it may be adapted to deal with articles of various dimensions. The primary pusher fingers 15, which are sufficient to deal with small loaves L<1>, are supplemented in their action by fingers 16 for dealing with large loaves L. The primary fingers 15 are fixed to cross members 13 on endless conveyer chains 10 by clamps 17, and are maintained in position by arms 24 on the cross member with rollers 25 engaging a guide rail 26. The arms 16 are releasably held on the cross member in operative position by radial plugs 27, Fig. 3, each having a plunger 28 normally pressed into a hole 29 in the cross member by a spring 30. When the arms 16 are to be put out of action, the plunger 28 is released by pulling out the knob 31, and they are moved transversely by sliding them to the ends of the cross members. They may also be raised to the position shown in broken lines in Fig. 1 and an aperture 39 is engaged by a pin 38 on a rotary sleeve 35 on a cross-bar 33. The ambit of rotation of the pin 38 is sufficient to allow it to conform to the differences encountered when travelling round the sprockets 11. The arm 16 is moved axially outwards to effect the engagement. The folder plates 19, 20 are adjusted by turning a screwed rod 23 on which they are mounted, and are cleared by the arms 16 when the apparatus is set for normal articles L<1>.
Patent GB-694879-A (GB)
Title: Improvements in or relating to devices for dispensing the contents of collapsible tubular containers
Inventor: HITCHINS WILLIAM GRAHAM
IPC: B65D35/28
Filed: 1950-11-16
Abstract: 694,879. Collapsable tubes. HITCHINS, Ltd., W. G. Nov. 16,1951 [Nov. 16, 1950], No. 28086/50. Class 66 [Also in Group XXVIII] A device for dispensing the contents of collapsable tubular containers comprises a pressure tight housing to receive the container in such a way that its orifice is outside the housing and means for generating hydraulic pressure within the housing so as to collapse the container. The container 1 is preferably made in two concentric portions 7 and 8 and is associated with a pump transferring liquid from the reservoir portion 7 to collapse the tube contained in portion 8. The tube nozzle 3 extends through a packing gland 5 to the delivery opening. On the insertion of a new tube 4 portions 7 and 8 are both filled with liquid and to dispense the contents the plunger pump is operated to force liquid from the outer to the inner portion. The size of the pump is such that a suitable quantity of substance for normal use is delivered by a single stroke. The end of the plunger 11 is preferably made with a projecting pin 17 which holds the ball valve 16 open during the first part of the return stroke, thus making a clean cut off to the supply of substance by withdrawing a small part of the liquid in the inner container. A shutter 17<SP>1</SP> covers the delivery opening and is automatically pushed aside by a lever 19 attached to the handle end of the pump plunger whenever the pump is operated.