baber/WOPTO huggingface dataset:
Patent GB-1004470-A (GB)
Title: Improvements in or relating to compounds of the androstane series
IPC: C07J9/00
Filed: 1964-06-18
Abstract: The invention comprises compounds of the formula <FORM:1004470/C2/1> wherein X is a carbonyl or b -hydroxy-methylene radical, and a process for the preparation of 17a  - ethynyl - 17b  - hydroxy - 19 - nor - androst - 4 - en - 3 - one which comprises contacting 6b , 19 - epoxy - 3b ,5a  - dihydroxyandrostan - 17 - one with an agent which adds to a 17-carbonyl grouping to form the corresponding 17a -ethynyl - 17 - b  - hydroxymethylene derivative thereof, oxidising the resulting 6b , 19-epoxy-17a -ethynylandrostane - 3b ,5a ,17b  - triol with a chromium oxidising compound in which the chromium exists in the +6 oxidation state to afford 6b ,19 - epoxy - 17a  - ethynyl - 5a , 17b -didydroxy - androstan - 3 - one, contacting the latter substance with zinc and acetic anhydride to yield 17a -ethynylandrosta-3,5-diene-3,17b ,19 - triol 3,17,19 - triacetate, hydrolysing that triester in the presence of an acid to produce 17a - ethynyl - 17b ,19 - diacetoxy - androst - 4 - en - 3 - one, and contacting the latter compound with an alkali metal hydroxide, or alternatively hydrolysing that triester with an alkali metal hydroxide, to afford 17a  - ethynyl - 17b  - hydroxy - 19 - nor - androst-4 - en - 3 - one.  6b ,19 - Epoxy - 3b ,5a  - dihydroxyandrostan -17-one may be obtained for example by treating 3,b -acetoxy-5b ,6b -epoxyandrostan-17-one with acetic acid in the presence of p-toluene sulphonic acid to obtain 3b ,5a  - diacetoxy - 6b  - hydroxyandrostan - 17-one, heating the latter with lead tetracetate and iodine to obtain 3b ,5a -diacetoxy-6b ,19-epoxyandrostan-17-one which is hydrolysed to obtain the desired 6b ,19-epoxy-3b ,5a -dihydroxyandrostan-17-one.
Patent GB-958397-A (GB)
Title: The extraction of complex divalent metal cations by naphthenic acid
Inventor: FLETCHER ARCHIBALD WILLIAM
IPC: C22B3/32
Filed: 1961-07-13
Abstract: Uranium metal values are extracted from aqueous solution or suspension, with a solution of naphthenic acid in an inert organic solvent immiscible with the aqueous medium.  The extract is separated from the aqueous raffinate and stripped with an acid, e.g. sulphuric acid. The metal values are present in solution as complex divalent metal cations UO2++ or as a suspension of the hydrolysis products thereof. The extraction may be in three stages.ALSO:Uranium metal values are extracted from aqueous solution or suspension, with a solution of naphthenic acid in an inert organic solvent immiscible with the aqueous medium.  The extract is separated from the aqueous raffinate and stripped with an acid. The metal values are present in solution as complex divalent metal cations UO2++ or as a suspension of the hydrolysis products thereof.  The extraction may be in three stages.
Patent GB-461760-A (GB)
Title: Process for obtaining alimentary substances from earth-nuts and other edible oleaginous grains or seeds
IPC: A23L25/00
Filed: 1935-09-13
Abstract: Alimentary substances are obtained from earth nut kernels or other edible oleagenous grains or seeds by first subjecting the decorticated and uncrushed kernels to intense desiccation by heating at about 50-60 DEG  C. or even 80-90 DEG  C. until a water content of from 1-4 per cent is left.  The heating may be by hot air or under vacuum.  The desiccated kernels are then subjected to the action of presses for the extraction of the oil, the kernels in consequence of their desiccation becoming merely flattened but not crushed during the pressing.  The cake thus obtained is disintegrated and the skins of the kernels removed by rubbing and winnowing.  The kernels are then milled or ground to flour.  The kernels may be coarsely ground and treated with a solvent, such as rectified petroleum ether, to remove some of the remaining oil.  The kernels after the removal of the skins may be moistened, for example by steam for 5-15 minutes, roasted and ground into flour.  The process may be also applied to hazel nuts, almonds and walnuts.  Specification 416,818 is referred to.
Patent GB-1040677-A (GB)
Title: Improvements relating to arc furnaces
Inventor: GRINDELL DUNCAN HOLMES
IPC: H05B7/12
Filed: 1965-06-16
Abstract: 1,040,677. Arc furnaces. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 16, 1965, No. 25484/65. Addition to 1,001,132. Heading H5H. A single or multiple phase arc furnace has means for reducing voltage fluctuations in the mains supply comprising graphite shields 3, 14 (Figures, not shown) surrounding an electrode 1 and means for passing cooling gas, e.g. argon, between the shields and between the electrode 1 and shield 3. The shields are electrically insulated from the electrode or may be of insulating material. The positions of the shields are adjustable and they may be maintained in the optimum position relative to the electrode, automatically. Further gas-cooled shields may be added.
Patent GB-532593-A (GB)
Title: Improvements in or relating to spinners for the hubs of airscrews
IPC: B64C11/14
Filed: 1939-09-09
Abstract: 532,593. Spinners for airscrews. CONSTANT SPEED AIRSCREWS, Ltd., and MARSHALL, F. G. Sept. 9, 1939, No. 25489. [Class 114] In a variable pitch air-screw, the front portion of a spinner a is supported on a substantially cylindrical dome d which is secured co-axially in front of the hub b and encloses part of the mechanism for controlling the pitch of the blades c. This support includes a plate ring e with a channel section f to receive a bearing ring or segments h of fibre, vulcanized rubber, or synthetic material, which slides on the dome, and damp out the transmission of vibrations from the airscrew to the spinner. The spinner may be secured in position from the back of the hub in the manner described in Specification 451,553.
Patent GB-665204-A (GB)
Title: Method for preparing a substitute for human milk
IPC: A23C9/20
Filed: 1948-09-30
Abstract: 665,204. Human milk substitutes. NYROP, J. E. Sept. 30, 1948, No. 25490/48. Class 49. A substitute for human milk is prepared by modifying cow's milk to a product containing casein and albumin protein, or the hydrolysis products of such proteins, and, if desired, fat and sugar, in the ratio in which they occur in human milk, and adding to the product folic acid and nicotinic acid in the proportions in which they occur in human milk. The amino acids cysteine and cystine, or substances containing cysteine, e.g. glutathione, and other vitamins, e.g. A, B, C, D and p-aminobenzoic acid, may be incorporated. The albumin may be lactalbumin from whey, from which anaphylactically active substances are preferably removed by enzymatic hydrolysis, e.g. by hydrolysis under the influence of lactic acid bacteria, cattle or swine blood serum or plasma, from which the euglobulin fraction has preferably been removed by salting out or by adsorption on aluminium hydroxide gel, or egg albumin in which the avidin has been destroyed, e.g. by heating to 60‹ C. Usually the pH of the product is adjusted to 6.8 by addition of sodium bicarbonate or of lactic acid, but a product of pH 4-5 may be made. The product may be homogenized, and may be dried, e.g. by atomizing in hot air. The fat may be milk fat, e.g. cream of 10 per cent fat content obtained by centrifuging cow's milk is conveniently the starting material modified; milk fat may be substituted in part by another fat such as olive, coconut, palm kernel or palm oil. The sugar includes lactose, which may be in the form of whey from which the,proteins have been removed by coagulation and centrifugal separation and the peptides have been removed by treatment with active carbon, galactose and glucose. and such sugars with maltose or sucrose.
Patent GB-863139-A (GB)
Title: Production of conjugated diolefines
Inventor: BREAM JOHN BERNARD
IPC: C07C2/86
Filed: 1958-08-08
Abstract: Conjugated diolefines are prepared by reaction between a lower mono-olefine having up to 6 carbon atoms in the molecule and formaldehyde or acetaldehyde in the vapour phase in the presence of a non-volatile acid, having a boiling point of at least 200 DEG C. at atmospheric pressure, supported on activated alumina which, prior to deposition of the acid, has been heated to 900-1200 DEG C. The catalyst may contain about 5% of phosphoric, molybdic, tungstic, silicotungstic, phosphomolybdic or phosphotungstic acid deposited as such or in the form of a heatdecomposable salt with a volatile base such as ammonia, methylamine, ethylamine or pyridine.  The alumina is preheated for 20 hours or more. Preferred olefines are isobutene, and 2-methylbutene-1 or -2.  The aldehyde is preferably formaldehyde added in the form of industrial formalin; compounds forming formaldehyde such as trioxane and paraformaldehyde may be used.  The molar ratio of olefine to aldehyde is preferably 4-20:1 and the proportion of aldehyde in the reaction mixture is preferably maintained between 2 and 10% (molar) by addition of nitrogen, a lower paraffin, carbon dioxide or steam.  Temperatures of 150-400 DEG C. are used with space velocities of 0,1-50 moles of aldehyde per litre of catalyst per hour.ALSO:Catalysts for use in the condensation of a lower mono-olefine with formaldehyde or acetaldehyde comprise a non-volatile acid supported on activated alumina prepared by heating the alumina to 900-1200 DEG C. and depositing the acid on it as such or in the form of a heat-decomposable salt with a volatile base.  The alumina is preferably heated for more than 20 hours.  Suitable acids are phosphoric, molybdic and tungstic acids and iso- and hetero-poly acids of molybdenum, tungsten and vanadium such as silicotungstic, phosphomolybdic and phosphotungstic acids.  The volatile base may be ammonia, methyl- or ethyl-amine or pyridine.
Patent GB-1269773-A (GB)
Title: Improvements in or relating to printed circuit arrangements
Inventor: NEWTON GEORGE CHARLES
IPC: H05K1/18
Filed: 1968-05-29
Abstract: 1,269,773. Cathode-ray tube accessories. E.M.I. Ltd. 14 April, 1969 [29 May, 1968], No. 25667/68. Heading H4T. [Also in Division H1] A printed circuit arrangement comprising electrical circuits associated with the operation of a cathode-ray tube and which may include deflection coils is formed on a flexible insulating base which is rolled around the neck of the tube. As shown, the base 1 carries a cascode type E.H.T. generator 2, line and field deflection circuits 3 and 4 respectively incorporating high dissipation transistors 5, 6 and connected to respective deflection coils 7, 8 (not shown to scale), electrostatic screens 9, "Mumetal" (Registered Trade Mark) foil screen 10, focussing circuits 11 incorporating a high dissipation transistor 12, camera head-amplifier 13 and camera waveform generators 14, the (integrated circuit) amplifier 13 and other integrated circuits 18, 19, 20 and 21 being accommodated in apertures punched in the base material. The arrangement is prepared for rolling by folding the portion above the line X-X forwardly so as to occupy the blank region immediately below line X-X and the portion below line Y-Y is then folded so that it overlaps the other portions and is insulated therefrom, a cut being made between the right-hand end of Y-Y and the U-shaped cut-out so that the amplifier 13 is not folded over. The folded arrangement is then rolled in the direction of the arrow around the neck of the tube. Input connectors are provided at 15.  Connections arq made by soldering or welding preferably using the "beam-lead" technique and the use of masking methods for selective application of electro or electroless plating to build up terminal regions with gold or rhodiumplated silver to afford plug and socket connections is referred to. Aluminium conductors may be anodized to provide insulating protection. Selective etching of laminates having similar or dissimilar metals on one or both sides for magnetic screening and the interleaving of such materials with the rolled-up base to provide focus coils etc. is also discussed. Specification 1,178,234 is referred to.
Patent GB-615730-A (GB)
Title: Apparatus for regenerating the capillaries at the surface of the body
IPC: A61H9/00
Filed: 1945-10-03
Abstract: 615,730. Medical reduced pressure-treatment apparatus. SMITH, J. A. Oct. 3, 1945. No. 25694. Convention date, Oct. 16, 1944. [Class 81 (ii)] Apparatus for subjecting the surface of the body to reduced pressure comprises a throttle aperture 18 and adjustable vacuum-relief valve 22 connected in series in a passageway between the atmosphere and a vacuum source 20 a cup 10 being connected to said passageway at a point between the valve and throttle aperture. The relative positions of the latter may be reverse from that shown. A filter 24 may be provided on the cup, and the inlet of the valve or throttle aperture, as the case may be. The valve shown automatically maintains the required degree of reduced pressure, but a manually controlled valve may be used. A pressure gauge 26 is indicated.
Patent GB-952037-A (GB)
Title: Method of manufacturing a heat or sound insulating board and product thereof
Inventor: DENNING PAUL SAMUEL
IPC: D21H17/69
Filed: 1962-07-05
Abstract: A heat-insulating or sound insulating board is prepared by depositing upon the screen of a paper-making machine an aqueous slurry of expanded perlite particles and fibres together with an adhesive binder.  The perlite particles may comprise about 40% to 80% by weight of the dry product, the fibres from 10% to 50% and the binder up to 30%.  The product consists essentially of perlite particles in point contact and held together in a matrix of fibres lying in the voids between the perlite particles.  Even distribution of the fibres is important and is more readily achieved with short fibres such as e.g. newsprint pulp, the binder being added to increase the cohesion of the fibres and thus the strength of the board.  The board may be passed through a single pair of press rolls before final drying is effected by heat. Examples of suitable binders include: bituminous emulsions, sodium silicate, pitch, bentonite, synthetic resins, such as calcium acrylate and dispersions of starch and cements.  Sodium silicate is particularly suitable as a binder where flame resistant properties are required in the product.  Where starch is used as a binder the board is found to have water resistant properties which may be further increased the addition of an aqueous emulsion of vinyl acetate polymer.  For heat insulation applications in which the temperature may lie between 600 DEG F. and 1200 DEG F. asbestos or glass fibres may form part or all of the fibre content of the board. The particle size of the perlite is such that the greater part of the particles will pass a 20 mesh screen and a substantial proportion is of about 100 mesh size.
Patent GB-326218-A (GB)
Title: Improvements in railway car construction
IPC: B61G9/18
Filed: 1928-09-07
Abstract: 326,218. Duryea, O. C. Sept. 7, 1928. Combined buffer and draw-gear. -A central draught member for a railway vehicle, preferably extending substantially the entire length of the vehicle, is adapted for movement relative to the body underframe against the action of friction elements, and is provided with a coupler-head having with respect to the draught member a certain lost motion which alone determines the amount of train slack. In the construction shown, the draught member 17, Fig. 1, is built up of two longitudinal channel members 18, Fig. 2, reinforced by plates 21 and end castings 19, and is adapted to be guided through openings in the cross-bearers 14 and body bolsters 13. On their outer and inner faces the channel members 18 are provided respectively with friction plates 23, 25 which co-operate with outer wedge-shaped friction plates 24 and with inner friction shoes 34, 35, the latter abutting against a diamondshaped portion 13<a> of the body bolster 13. A combined draught and buffing spring 31 operating in conjunction with follower plates 29, 30 is disposed between a casting 26 secured to the channel members 18 and bosses 35a on the shoes 35, the follower plate 29 being slidable on rods 28 and the follower plate 30 on rods 32 arranged as shown. Under draught stresses the draught or channel members 18 move to the right, Fig. 2, displacing the follower plate 29 and compressing the spring 31, while the spring in turn transmits its pressure to the shoes 35 which are forced outwardly and increase the friction between the surfaces 23, 24, 25, 34 and 35. When buffing occurs, the channel members 18 and follower plate 30 move to the left and compress the spring 31, the effort being then transmitted through the follower plate 29 and rods 32 to the shoes 34, again increasing the frictional resistance to movement of the draught member. Additional frictional members or stringers 43, Fig. 4, are disposed batween the flooring 12 and upper faces of the channel members 18. The lost motion of the coupler-head with respect to the draught member is obtained by passing through holes 37<a> in the shank 37 of the head a key 38 of smaller width connected to the draught member, a spring 39 located within a recess in the head tending normally to maintain the latter in a forward position. When buffing takes place the springs 39 are compressed before movement is imparted to the draught member 17. Stops 19<c> and 41 limit the travel of the draught member, but such travel is greater than the amount of lost motion permitted to the coupler-heads. If desired, the cross bearers 14 may be attached to the draught member 17 and move therewith relatively to the side sills 10 and body bolsters 13. In a modified construction wedge-shaped shoes movable with the draught member co-operate with a double wedge-shaped element associated with the body bolster, while in a further modification the friction elements are constituted by Z-shaped plates disposed between the flooring and the upper faces of the channel-sectioned draught members.
Patent GB-320485-A (GB)
Title: Improvements relating to collapsible cycles
IPC: B62K5/05
Filed: 1928-09-07
Abstract: 320,485. Andrews, H. L. H. Sept. 7, 1928. Collapsable vehicles. - In a three or fourwheeled vehicle propelled by the occupant in a semi-recumbent position, utilizing the thrust of his back against a back-rest while actuating pedals, the two front wheels being used for steering and the rear wheel or wheels for propulsion, the front wheels are adapted to be collapsed inwardly, together with their steering parts, while remaining parallel or substantially parallel; in the case of a four wheeled vehicle the two rear wheels also collapse inwardly. As shown in Figs. 1 and 3, the vehicle comprises two front wheels 1 and a rear driving-wheel 2, and the main frame or non-collapsable portion comprises a fixed member 3, at the centre of a bonnet resembling that of a motor car, an upright 4, and two longitudinal beams 5, between the rear ends of which the back wheel 2 is mounted. The rider's seat 12 is carried on a support secured between the beams 5. A steering wheel 8 and pillar 8<a> are connected to the front wheels by means of cables 9 and linked steering arms 10 actuating pivoted stub axles 11. The body of the vehicle is also collapsable and comprises side members 15, a fabric back 16 and top, and two portions 18 of the bonnet which are arranged to fold back as shown in Fig. 3, together with pivoted portions 19 of the front axle and corresponding portions 21 of the steering linkage. Pivoted portions 22 of brackets by which the sides 15 of the body are carried also collapse. The sides 12a of the seat, and parts of the steering wheel 8 also fold inwards. Floor boards 24 fold up into a vertical position, while when in the normal horizontal position they engage uprights 25 to maintain the whole construction rigid, with or without the aid of removable stays.
Patent GB-1273958-A (GB)
Title: Internal combustion engine distributor drive mechanisms
Inventor: HASKEW HAROLD MILTON
IPC: F01M9/10
Filed: 1971-04-19
Abstract: 1,273,958. Toothed gearing. GENERAL MOTORS CORP. 19 April, 1971 [13 April, 1970], No. 25841/71. Heading F2Q. [Also in Division F1] In an internal combustion engine distributer drive mechanism comprising a helical gear 22 on a distributer drive shaft 20 meshing a helical gear 24 on a cam-shaft 26, the gear 22 is biased into continuous engagement with gear 24 by oil under pressure acting on the end of the drive shaft 20. A shaft extension 32 is pinned to the lower end of shaft 20 and is journalled in a bore 30 in a cylinder head 10. Oil is supplied under pressure to the lower end of bore 30 and in addition to preventing backlash between the gears, the oil enters the clearance between the bearing surfaces of the shaft extension 32 and bore 30, and viscous shearing of the oil, as the shaft rotates, exerts a controlled drag on the distributer drive shaft.
Patent GB-743818-A (GB)
Title: Delivery mechanism for signature stitching machines
IPC: B42B4/00
Filed: 1953-09-18
Abstract: 743,818. Sheet-delivery apparatus. ROSBACK CO., F. P. Sept. 18, 1953 [Oct. 15, 1952], No. 25844/53. Class 100 (1). A delivery mechanism for signature stitching machines comprises a normally vertical transfer plate adapted to receive and support a stitched signature as discharged from the stitching machine, a receiver disposed adjacent the transfer plate, the plate being swung upwardly and in the direction of the receiver to deposit a signature resting on the plate flatwise upon the conveyer. The normally vertical transfer plate 20 is aligned with the stitching saddle 1 and provided with an adjustable stop 21 to limit movement of the signatures. Pivotally connected to the transfer plate are arms 24 connected to crank arms 25 on a shaft 26. A further arm 27 is pivotally connected to the plate 20 and the frame 29 so that on rotation of the shaft 26 the plate 20 supporting a stitched signature is moved from the position shown in Fig. 2 to that shown in Fig. 3, the signature being delivered on to endless bands 31 for delivery on to a receiver 38. Co-operating with the bands 31 are friction rollers 41 driven by a belt and pulley arrangement from a shaft 43 which also drives, through a belt 46 the endless bands 31. The main drive motor of the machine (Fig. 1, not shown) causes reciprocation of a rod 52 in timed relation to the stitching and forwarding of the signatures in the machine. The rod 52 is connected to a bell crank lever 53 rotatably mounted on the shaft 26. The bell crank is connected also to a bar 62 in turn connected to a projection 63 on a sleeve 64 rotatable on the shaft 43. At the other end of the sleeve is a vertical arm 65 supporting a pawl 68 which co-operates with a ratchet wheel 70 fast on the shaft 43. Reciprocation of the rod 52 thus causes intermittent driving of the endless bands 31 and the friction wheels 41. Oscillation of the bell-crank 53 also causes oscillation of an arm 55, fast on the shaft 26, against the action of a spring 58, rotation in an anticlockwise direction being limited by a stop 60. Oscillation of the arm 55 imparts the necessary rotation to the shaft 26 for operating the transfer plate 20. Specification 700,892 is referred to.