baber/WOPTO huggingface dataset:
Patent GB-239684-A (GB)
Title: Improvements in and relating to breathing apparatus
IPC: A62B7/06
Filed: 1924-08-22
Abstract: 239,684. Heide, M. von der, and Hanseatische Apparatebau-Ges., vorm. L. von Bremen &. Co. Aug. 22, 1924. Respirators. - In respiratory apparatus in which a supply of liquefied breathing-gas is carried in a storage vessel, the latter is so mounted that evaporation of the liquid can proceed in any position which the apparatus may assume. As shown in Fig. 1, the liquefied gas is stored in a vessel 10 biassed at the bottom by a weight 14 and freely mounted on a spindle 9, and the evaporated gas leaves the vessel 10 through one or both of two pipes 17, 17<a> arranged, as shown in Fig. 3, so that egress of the gas is always possible. The gas passes through a breathing-bag 3 to a mouthpiece 5 and returns, on exhalation, to the insulated container 6 in which the vessel 10 is mounted, where the carbon dioxide is frozen out. Fig. 4 shows the invention applied to apparatus wherein, as described in Specification 168,886, the supply of gas is controlled by levers attached to the breathing-bag. In this construction the storage vessel 10 is pivoted on a pipe 20 through which the evaporated gas normally flows, the gas passing through a valve 22 into the bag 3. On an abnormal consumption of gas, the. bag 3 collapses, causing the valve 22 to close, the pressure in the vessel 10 then forcing a quantity of liquefied gas through the pipe 21 into the container 6. The liquid so expelled evaporates, the gas passing through the pipe 24 into the bag 3 and causing the valve 22 to re-open. As in the first construction, the exhaled air is delivered into the container 6, where its carbon dioxide content is frozen out. A furthur modification is described in which the levers 25 ,are replaced by an annular member actuated by the wall of the breathing-bag.
Patent GB-222268-A (GB)
Title: An improved process for the manufacture of an arsenical preparation for exterminating or keeping down pests
IPC: A01N59/22
Filed: 1923-08-04
Abstract: A preparation for destroying plant pests contains arsenic trisulphide in a colloidal form and is prepared by precipitating the sulphide, for instance by the addition of sulphuretted hydrogen, from a saturated solution of arsenious oxide containing a protective colloid.  The reaction is carried out at low temperature (about 0 DEG C.) and preferably with agitation of the solution.  The arsenious oxide used is preferably in the vitreous form.  This may be added slowly in powder form to cold water during strong agitation or may be dissolved in warm or hot water to form a saturated solution which may be subsequently cooled without depositing crystals.  A suitable protective colloid consists of a water extract of pine branches and pine needles concentrated until it contains 50 per cent of organic substances. Traces of alcohol or ether may be added to the arsenic solution to prevent frothing.ALSO:A concentrated solution of arsenious acid for use in preparing colloidal arsenic trisulphide is prepared by slowly adding powdered vitreous arsenious oxide to cold water during strong agitation or by dissolving the vitreous oxide in hot water to form a saturated solution which may subsequently be cooled without depositing crystals.
Patent GB-614194-A (GB)
Title: Improvements in and relating to the preparation of derivatives of cholesterol
IPC: C07J9/00
Filed: 1946-07-05
Abstract: 7-Halogenocholesteryl ethers are obtained by treating cholesterol etherified in the 3-position in a suitable solvent with a halogenating agent, e.g. N-bromosuccinimide, N-bromophthalimide, unsubstituted N-chloro- or bromo-amides of fatty acids, having not more than six carbon atoms in the molecule, N-chloro- or bromoacetanilides, having on the para p  position and, if desired, on either or both of the ortho positions of the benzene ring, groupings such as will prevent the migration of the N-halogen into the para and/or ortho position, these substituents being of such a nature as to be inert to the reagents or products in the reaction mixture, substances having the formula R.CO.NH.X, where X is bromine or chlorine and R is phenyl or substituted phenyl, excluding such substituents as would react under the conditions of the reaction either with the halogenating agent or with the halogenated steroid. Suitable solvents are those which under reaction conditions are inert both to the reaction components and products, e.g. petrol b.p. about 80 DEG  C.  Preferably, the reaction is brought about by heating to the b.p. of the solvent.  The 7-halogen cholesteryl ether may, with or without isolation, be dehydrohalogenated by methods described in Specification 574,432.  Detailed examples are given of methods using N - bromosuccimide as a halogenating agent.
Patent GB-1103035-A (GB)
Title: Improvements in or relating to water heaters combined with other heat exchangers
IPC: F24H1/50
Filed: 1966-05-06
Abstract: 1,103,035. Water heaters; Concentric tube heat exchangers. B.S.A. HARFORD PUMPEN G.m.b.H. 6 May, 1966 [8 May, 1965], No. 20252/66. Headings F4A and F4S. A gas-filled water heater for heating central-heating water, comprising a casing 16, is mounted by means of screws 13 passing through its backing plate 12 on to the rim 8<SP>1</SP> of an indirectly heated sheet metal or plastics domestic draw-off water heater, itself detachably mounted on hooks 11 secured in a supporting wall. Central heating water from pipe 20 is circulated by pump 21 through the gas-fired heater to a twoway outlet tap (23, Fig. 2). Part of the water is then passed to the central heating system, to be eventually returned to the pipe 20, the remainder entering through inlet (7b) the domestic draw-off heater (8). This contains two cylindrical vessels (1, 2) having an inlet 4 and an outlet (5) for the draw-off water respectively, and inter-connected by a pipe (3). Vessel (1) also has a vent pipe 6. The draw-off water in these vessels (1, 2) is heated by the central-heating water pipe (7) extending therethrough, the central-heating water passing back from the outlet (7a) to the pipe 20.
Patent GB-949006-A (GB)
Title: Flexible permanent magnets
IPC: H01F7/02
Filed: 1962-05-25
Abstract: 949,006. Magnetic compositions. B. F. GOODRICH May 25, 1962 [May 29, 1961], No. 20265/62. Heading H1H. A flexible permanent magnet comprises finely divided particles of magnetic material, such as barium ferrite, bonded with one of, or a mixture of some or all of, chlorosulphonated polyethylene, polyisobutylene and chlorinated polyethylene, the particles comprising at least 60% of the volume, and not exceeding 10 microns in size. The mechanical and magnetic properties of various compositions according to the invention are shown in tables and graphs.
Patent GB-1167553-A (GB)
Title: Tunnelling Apparatus
IPC: E21D9/10
Filed: 1967-05-02
Abstract: 1,167,553. Tunnelling apparatus. DEMAG A.G. 2 May, 1967 [18 Aug., l966], No. 20320/67. Heading E1F. A tunnelling apparatus involves the combination of a tunnel-driving shield 1 and an earth-winning equipment having a cutter head 15 so mounted on a boom 9 as to be rotatable about and reciprocable along the longitudinal axis of the boom that is mounted on a structure 5, 6 anchored in the shield to be universally swingable by rams 10, 12 of the structure 5, 6.
Patent GB-1096671-A (GB)
Title: Improvements relating to stacking and unstacking machines for crates, boxes and the like
IPC: B65G57/30
Filed: 1963-05-22
Abstract: 1,096,671. Stacking crates. DAWSON BROS. Ltd., G. DAWSON, and D. DAWSON. July 29, 1964 [May 22, 1963], No. 20328/63. Heading B8C. In a machine for stacking or unstacking crates, upright guide members 8 are adjustable laterally to suit the width of the crates to be handled. The machine comprises vertical frame members 1 joined by top and bottom plates 2, and the crate supports 7 are vertically slidable on the guide members 8 by a fluid pressure ram 5, 6. The top and bottom ends of the guide members 8 are supported by nuts 9 on left- and right-handed screwed shafts 10 rotatable in bearings 11 on the top and bottom plates and turned by a handle 19 and chain wheels 12 to adjust the lateral spacing of the guide members.
Patent GB-332382-A (GB)
Title: Device for regulating the amount of flow or rate of feed of powdered, granular, or lump material in conjunction with crushing or pulverizing mills and the like
IPC: B02C25/00
Filed: 1929-07-03
Abstract: 332,382. British Rema Manufacturing Co., Ltd., and Howden, P. July 3, 1929. Feeding-devices for granular &c. materials.- A device for regulating the flow or rate of feed of material in pulverizing machines &c. comprises a cam or a fixed or variable throw crank A and connecting rod B arranged to impart an oscillatory or reciprocating movement to a feed member C<1>, Fig. 2, through springs b', b<3>, the stroke of the feed member being regulated by adjustable stops E, E. The crank pin a may be adjustable in a slot in the crank A, and the connecting rod B is slidable in a socket b<2> pivoted to an arm C connected to a shaft c on which the feed member is also secured. The feed member comprises two arms c<1>, Fig. 2, connected by a bar b<2> which sweeps over a tray c<3>. The stops E, E', form nuts on a right and left band screw thread cut on a shaft e<2> and are slidable in guides e<6>. A hand wheel e<3> rotates the shaft e<2> and is locked in position by a stop e<4>. In a modification, the connecting rod B is connected to one end of a leaf spring, the other end of the leaf being secured to the shaft c.
Patent GB-476766-A (GB)
Title: Improvements relating to motor vehicle seats
IPC: B60N2/68
Filed: 1936-07-23
Abstract: 476,766. Vehicle seats. MORRIS MOTORS, Ltd., and SMITH, S. V. July 23, 1936, No. 20388. [Class 52 (ii)] A vehicle seat comprises an under-carriage consisting of a pair of runners a adjustably supported, e.g. in guides, on the floor of the vehicle, and provided with upturned ends, a frame b mounted on the upturned ends, and a shaped sheet metal back e attached directly to the frame b. The frame b may be made of angle iron and carries a lattice of springs or springs and metal strips on which the seat cushion rests. The back e may be formed with strengthening ribs f, and is upholstered.
Patent GB-516809-A (GB)
Title: Improvements in or relating to the manufacture of garments
IPC: A41D11/00
Filed: 1938-07-09
Abstract: 516,809. Garments. EQUUS HAIR SPINNING CO., Ltd., and PLATTS, C. M. July 9, 1938, Nos. 20391/38 and 19697/39. Drawings to Specification. [Class 141] Garments such as dresses, nightdresses &c. are made by cutting them out in one or more pieces to a shaped pattern and further shaping the garment by shiffling wholly or partially round the neck opening and elsewhere whereby the garment will fit the wearer without the provision of fastenings. Shiffling is effected by stitching with an elastic yarn so as to produce a gathering.
Patent GB-800126-A (GB)
Title: Treatment of platinum-containing catalyst
Inventor: JR THOMAS HENRY MILLIKEN
IPC: B01J23/96
Filed: 1956-07-02
Abstract: Platinum is recovered from a platinum-containing catalyst by treating the catalyst at 300-500 DEG  F. with a caustic alkali solution to dissolve the catalyst components other than platinum and then separating the undissolved platinum residue.  The treatment is carried out at a pressure sufficient to keep the catalyst in contact with liquid alkali solution.  In examples a spent platinum-on-alumina catalyst having a hydrocarbonaceous deposit is heated with 50 per cent sodium hydroxide solution in a closed container and after dilution with water the insoluble residue is filtered off, washed and ignited.  Further purification may be effected by leaching with 1 per cent hydrogen chloride solution, dissolving in aqua regia, filtering, evaporating to dryness, dissolving the residue in hydrochloric acid, and then reducing to metallic platinum by adding magnesium and warming. The carbon in the spent catalyst treated acts as a coagulant and filter aid and also as a reducing agent for the platinum. Addition carbon black may be added for this purpose.  The carbon is removed during the platinum recovery by filtration or oxidation.  In a modified process described with reference to a flow diagram, the 1 per cent hydrogen chloride solution is replaced by hydrogen fluoride and the residue is dissolved in a mixture of hydrochlorine, sulphuric and nitric acids.  After evaporation of the solution and dissolving the residue in hydrochloric acid, ammonium chloride is added to form ammonium chloroplatinate which is then reduced to platinum metal by heating in hydrogen.  The platinum may be converted to a soluble compound which is used in the preparation of new catalyst.
Patent GB-388656-A (GB)
Title: Improvements in processes for producing practically pure cellulose ("alpha-cellulose") from raw celluloses of any origin
IPC: D21C3/04
Filed: 1932-07-19
Abstract: 388,656. Preparation of cellulose. PALAZZO, F. C. and PALAZZO, F., 34, Via Montebello, Florence, Italy. July 19, 1932, No. 20462. Convention date, Aug. 4, 1931. [Class 96.] Cellulose containing 96-99 per cent alphacellulose is obtained from raw cellulose of any origin by treating with an alkaline sulphite liquor containing 1-1À5 per cent NaOH and 0À5-À75 per cent Na2SO3 under a pressure of À5-2 atmospheres for 1-3 hours. The pulp at a concentration of 5-6 per cent may be bleached with a slightly alkaline sodium hypochlorite solution, containing 1-2 per cent active chlorine, or with a slightly acid potassium permanganate solution, or with both systems successively. Any remaining impurities are removed by a treatment with dilute sulphurous acid, e.g. À5-1 per cent solution, or with dilute hydrochloric acid followed by a thorough washing. To obtain a very pure product, the pulp may be subjected to a second treatment with the soda-sulphite solution at a pressure of À5-1 atmosphere for a period up to 1 hour. The percentage of chemicals added is calculated to allow for the moisture content of the raw material, and for the amount of condensate if the heating is effected by steam injection. The proportion of raw cellulose to liquor varies from 1 : 4 for air-dried raw material to 1 : 10 for watery material. The product may be shaped according to its ultimate use, either as a mass resembling cotton wool obtained by drying the product with hot air and then carding or treating in a centrifugal disintegrator, or as thin leaves or foils, which may be cut into ribbons, or as felt, prepared on a rotary suction filter.
Patent GB-459034-A (GB)
Title: Improvements in and relating to printing telegraphs
IPC: H04L21/00
Filed: 1936-07-23
Abstract: 459,034. Type-printing telegraphy. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. July 23, 1936, No. 20473. Convention date, Aug. 23, 1935. [Class 40 (iii)] Character elements, Fig. 1, from which any letter or numeral can be built up are carried on a type-wheel 1, Fig. 2, which makes one revolution for each character. The transmitting apparatus comprises a cam 2 for each character having depressions s4, s6, s11, s14 corresponding to the elements e4, e6, e11, e14 required to constitute that character (e.g. the letter E). A receiving magnet 5 is normally energized, but on the commencement of rotation of cam 2 is released to release the type-wheel 1 and a cam wheel 4 to make one revolution. The wheel 4 has as many projections as the type-wheel has elements and when the magnet 5 is de-energized due to the engagement of spring 3 with a depression s4 &c., a projection on cam 4 acts through arms 9, 7 to cause a printing hammer 8 to move the tape 9<1> against the corresponding type element. The elements of a character are all printed within the same character field, the tape 9<1> being advanced a step at the end of each revolution. In a modification, the cam 4 and the magnet 5 control series contacts in the circuit of a magnet controlling the hammer 8.
Patent GB-592047-A (GB)
Title: Improvements relating to the manufacture of electrical condensers
IPC: H01B3/08
Filed: 1944-10-23
Abstract: 592,047. Condensers. BRITISH THOMSON-HOUSTON CO., Ltd., and STANWORTH, J. E. Oct. 23, 1944, No. 20475. [Class 37] Oxidized sheets of copper are coated with glass and then assembled and pressed together to form a. rolled or stacked condenser while the glass is still plastic or has been rendered plastic by further heating. The copper sheets may be oxidized by heating to redness in an oven to which air is admitted, the oxidized layer facilitating adherence of the glass, dipped into a bath of molten glass and then passed between rollers, preferably heated, to remove excess glass. The sheet may then be cut up for stacking, or a pair of coated sheets may be heated to soften the glass, wound on a heated mandrel and subsequently pressed to rectangular or other shape. The edges of the roll or stack may be ground to expose the copper, and terminal tags soldered on. Lead silicate, borate or borosilicate glasses containing, e.g. 60-70 per cent PbO, or one. of the glass compositions described in Specification 592,038, [Group XXIII], are preferably used to give the required low viscosity. Specification 330,268, [Class 37], also is referred to.
Patent GB-639502-A (GB)
Title: Improvements in and relating to rolling mills
IPC: B21B31/24
Filed: 1948-08-03
Abstract: 639,502. Rolling. BRIGHTSIDE FOUNDRY & ENGINEERING CO., Ltd., and UDALL, W. Aug. 3, 1948, No. 20531. [Class 83 (iv)] In a rolling-mill the upper roll 1 is held against a thrustrod 5 by a pair of adjustable spring - tensioned suspension rods 15, 15a, which are spaced from said rod at opposite sides thereof and are carried by a suspension head 17 to which they may be locked against movement in a direction to release the tension of springs 23, 23a, said suspension head being supported by the upper one 20 of a pair of coaxially disposed worm-gears 9, 20, by which it may be raised or lowered over a screw 18 carried by and rotatable with the lower worm-gear 9 in coaxial alignment with the thrust-rod. The suspension rods may be locked to the suspension head 17 by locknuts 26, 26a or the rods may be slotted, 28, for wedges and cotters. Rotation of the thrust-rod 5 by means of the worm 11 effects vertical movement of the rod through a nut 6 and a corresponding movement of the combined nut and worm-wheel 20 carrying the cross-head on the screw 18. When it is required to change the rolls, nuts 26, 26a, which are normally slackened back clear of the cross-head, are screwed up to engage the cross-head, thereby locking the suspension gear assembly and preventing release of the spring tension. The worm 22 is then turned to cause the assembly to move bodily downwards over the screw 18 until the hooked ends 16b, 16c of the suspension rods are clear of pins 16, 16a, which pins are then withdrawn, and the suspension assembly raised by operation of the worm-wheel 9, until the hooked ends and the end of the thrust-rod 5 are clear of the roll chock 3 and the thrust-pad 8 respectively. The roll and chock assembly is then removed and replaced by a new one. A reverse sequence of operations is then performed until the roll and chock assembly is fully suspended with the same spring pressure as before. The lower part of the thrust-rod 5 is protected from dirt &c. by a telescopic shield 14.
Patent GB-531217-A (GB)
Title: Improvements in cord stretching apparatus
IPC: B29D30/44
Filed: 1939-07-14
Abstract: 531,217. Stretching yams or cords. UNITED STATES RUBBER CO. July 14, 1939, No. 20537. Convention date, Sept. 8, 1938. [Class 120 (iii)] In a yarn or cordstretching apparatus comprising spaced conical rolls about which the cord is passed in several runs, the rolls 13, 14 are mounted on axes 11, 12 inclined to one another and are rotated only by the pull of the cord. The cord tends to mount each roll in a plane at right angles to that roll, thus spacing out the runs automatically, the spacing for a given pair of rolls arranged at a given inclination depending on the distance apart of the rolls. The rolls are grooveless and may be carried on anti-friction bearings.
Patent GB-689829-A (GB)
Title: Apparatus for forming a seal round a columnar element during insertion or removal thereof into or from a high-pressure zone
IPC: E21B33/072
Filed: 1951-08-31
Abstract: 689,829. Packers. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. Aug. 31, 1951 [Sept. 2, 1950], No. 20584/51. Class 85 [Also in Group XXVI] Apparatus for forming a seal around a columnar element e.g. a cable, wire line or small diameter tubing, during insertion or removal thereof into or from a high pressure zone, e.g. wells or high-pressure vessels, comprises a tubular element formed by one or more tubular members 11, 12, 13 having an axial bore slightly larger than the columnar element which passes therethrough, the said bore being enlarged at the upper end and adjacent the lower end to form two pressure fluid chambers 21, 14. The lowermost chamber 14 is supplied from a reservior 48 by one or more valvecontrolled conduits 16, 16a with pressure fluid. Any fluid passing up the bore with the columnar element is returned to the reservoir 48 from the upper chamber 21. The columnar element 27 in its upward passage passes through a blow out preventer 40, cable centring means 37, a part 17 of the common bore, wipers 31, the sealing fluid in the lower chamber 14, gas flow resistance orifices 34, parts 49, 50 of the bore, the upper chamber 21 and wipers 25. A removable split liner sleeve is provided in the bore of each tubular member 11-13.
Patent GB-886295-A (GB)
Title: Improvements in compression springs made of rubber or an elastomer
IPC: F16F1/42
Filed: 1960-06-10
Abstract: 886,295. Rubber springs. LUXEMBOURGEOISE DE BREVETS ET DE PARTICIPATIONS. June 10, 1960 [June 10, 1959; Jan. 23, 1960], No. 20585/60. Class 108(3). A tubular rubber compression spring 2, Fig. 1, has external transverse grooves 2 1 , 2 2  where the thickness of the wall e 1 , e 2  has different values at the respective levels so that the grooves close up successively to progressively increase the stiffness of the spring. Internal grooves 6 may also -be -provided in the intervals between the grooves 7. In a modification the grooves 7 may comprise rings of blind holes.
Patent GB-1123001-A (GB)
Title: Improvements in or relating to apparatus for orienting fibres
Inventor: PARRATT NOEL JAMES
IPC: D02G3/00
Filed: 1964-05-19
Abstract: 1,123,001. Orienting fibres. MINISTER OF TECHNOLOGY. 19 Aug., 1965 [19 May, 1964], No. 20631/64. Headings DIF and D1N. Fibres, e.g. of cotton, wool, asbestos or crystal whisker are aligned by causing them to flow in a liquid medium through a passageway subjected to a transverse vibration having an amplitude of the order of (2/3 to 1¢ times) the maximum width of the passageway, the fibres being formed into an orientated strand as they pass through the passageway. In Fig. 1 fibres dispersed at a low concentration in a liquid having low surface tension and high viscosity e.g. glycol, flow from a reservoir 13 onto a slow moving endless belt 1. The liquid is thus carried to a threaded rod 6 which extends across and close to the belt thus forming with the belt a series of passageways. The rod 6 is vibrated by a device 7 and in passing through the passageways the fibres are aligned. A suction roller 8 which may be moving 5- 10% faster than the belt with which it is in contact winds up the long or continuous strands. The rod 6 may be rotated to assist the passage of the fibres. In place of rod 6 a bar with a series of circular or diamondshaped holes may be provided and be vibrated horizontally or vertically. An example of the treatment of silicon nitride crystal whisker fibres is given with full numerical data.