baber/WOPTO huggingface dataset:
Patent GB-420539-A (GB)
Title: Improvements in the purification of combustion gases
IPC: B01D53/50
Filed: 1933-06-14
Abstract: In the removal of oxides of sulphur from combustion gases by means of aqueous washing media, deposition on the plant surfaces of calcium sulphate dihydrate is reduced or inhibited by maintaining in suspension in the washing media a large excess, say 5--10 per cent by weight, of solid calcium sulphate dihydrate.  It is stated that calcium sulphite or carbonate or flue dust may also have some effect. The washing liquid may be water, but advantageously an aqueous suspension of calcium hydroxide or preferably of calcium carbonate is used.  When the washing liquor is used cyclically, an amount of suspended solids is removed therefrom by settling corresponding to "the make" and calcium carbonate added to replace that removed by combination with the gases prior to recirculation of the liquor. Before solids are removed, the washing medium is preferably oxidized to convert calcium sulphite to calcium sulphate, and the settling may be so controlled that whereas calcium sulphate is removed, calcium carbonate remains in suspension.  When the washing liquor does not contain lime or calcium carbonate, calcium sulphate in the settled sludge may be recovered for recirculation by elutriation or differential sedimentation.  The process may be combined with the periodic flushing of the plant surfaces described and claimed in Specification 416,671, and the apparatus therein described may be used both for the process of the invention, and the combined processes.
Patent GB-458361-A (GB)
Title: Improvements in or relating to roller cutter and spindle assemblies for earth boring drills
IPC: E21B10/22
Filed: 1935-06-12
Abstract: 458,361. Earth-boring drills. REED, C. E., 4114, East Central Avenue, Wichita, Kansas, U.S.A. June 12, 1935, No. 16981. Convention date, July 2, 1934. [Class 85] A roller cutter assembly for earth - boring drills comprises a frusto-conical cutter 4 held to its spindle by anti - friction devices such as rollers 3, and running on large ball bearings 2 at its base. The spindle is in two parts, one part 1 having a reduced portion 4c on which the rollers 3 run and being connected to an integral support 1e by a curved portion forming a race for the balls 2 ; the other part has a reduced end part 1a fitting a bore in the apex of the cutter, a flange 1b and a stem 1c extending through the part 1 and welded to the support 1e at 5. The cutter has a curved groove 2a receiving the balls 2. The cutter has two cutting zones inclined to each other.
Patent GB-375981-A (GB)
Title: Improvements in or relating to lamps for road vehicles
IPC: F21V11/16
Filed: 1931-06-11
Abstract: 375,981. Vehicle lamps. STEVENS, J. A., 25, Pierremont Avenue, Broadstairs, Kent. June 11, 1931, No. 17028. [Class 75 (iv).] Lantern screens.-A vehicle lamp having a parabolic reflector b has an upper segment of the reflector extending to the front thereof removed, the opening so formed being provided with a cover a<4>. A downwardly inclined reflector r is hinged at a<2> to the front of the lamp, and may be adjusted in position. The cover is hinged at the front edge at a<1>, and has a fastening a<5>. The reflector r and cover a<4> may be formed in one piece or rigidly connected together, so as to turn about a common hinge. In a modification, the cover slides on to the lamp, a flange on the edge of the opening engaging in a peripheral channel on the cover.
Patent GB-1438616-A (GB)
Title: Method of and apparatus for preparing composite photomicrographs
IPC: G02B21/36
Filed: 1974-04-18
Abstract: 1438616 Composite photomicrographs C REICHERT OPTISCHE WERK AG 18 April 1974 [18 April 1973] 17101/74 Heading G2X A composite photomicrograph is obtained by making two successive exposures, firstly through a mask having an opaque area and a transparent area, and then through a complementary mask, that is, one having transparent and opaque areas corresponding to the opaque and transparent areas of the first mask. Such a pair of masks is shown in Fig. 3, the shaded areas being opaque. These masks are located at the intermediate image plane of a microscope. The two photomicrographs may represent photographs taken under different conditions, i.e. different magnifications, different microscopic techniques, etc. Fig. 5 (not shown) represents the two masks, each having semicircular transparent and opaque portions, mounted side by side in a holder which can be located in the intermediate image plane of the microscope. The technique may be extended to the use of three or more complementary masks.
Patent GB-216475-A (GB)
Title: Manufacture of cellulose solutions
IPC: C08B1/00
Filed: 1923-07-02
Abstract: Cellulose solutions are prepared by treating cellulose or a cellulose conversion product with an ammonia derivative of carbon dioxide or of an ammonia derivative of a sulphur derivative of carbon dioxide, in the presence of an aqueous alkaline solution; suitable derivatives are urea, thiourea, guanidine, dicyanodiamide, and a -a -dichlorisopropyl-alcohol-carbonic acid ester.  Instead of the derivative there may be used a mixture of substances capable of forming it, or of substances which are capable of conversion into the desired derivative.  The solutions obtained may be used in the manufacture of artificial silk, &c., films, artificial hair, coatings, dressings, fillings, sizes, plastic masses, and artificial leather.  The parent material may be cellulose, products obtained by comminuting cellulose in the presence of water, or by treating cellulose with oxidizing or reducing agents or by heating cellulose alone or in presence of water, glycerine or salts, or products obtained by treating cellulose with hot or cold alkalies with or without subsequent treatment with dilute acids and previous, subsequent or simultaneous treatment with bleaching or oxidizing agents, or cellulose conversion products obtained from solutions of cellulose such as those in cuprammonia zinc salts, or strong acids such as sulphuric acid, phosphoric acid, hydrochloric acid and arsenic acid, or products obtained by treating cellulose with these reagents but not to the point of dissolution, or artificial silk, &c., hydrocelluloses, oxycelluloses, alkali-soluble cellulose derivatives such as those of Specification 177,810.  The process may be conducted by dissolving the ammonia derivative of carbon dioxide &c. in alkali solution and then introducing the parent material, or by mixing the parent material and alkali solution and then adding the carbon dioxide derivative.  The reaction may be conducted at room temperature or with cooling, for example, to the temperatures below 0 DEG  C. preferably at temperatures below 0 DEG  and -25 DEG  C. or lower, for instance between 0 DEG  and -15 DEG  C.  The strength of the alkali solution may be between 2 per cent and 16 per cent, but a strength of 4-12 per cent is preferred.  The proportion of carbon dioxide derivative &c. may be 9-10 per cent of the weight of parent material taken, up to an equal weight or more.  The solutions are coagulated by acids, salts, alcohols or even water, or by heat, steam, &c.
Patent GB-530526-A (GB)
Title: Improved safety device for power-operated hoists for raising motor cars and for other purposes
IPC: B66F7/18
Filed: 1939-06-12
Abstract: 530,526. Garage lifts. ENGELBRECHT, K., and AUTOMOBILE PARTS & ACCESSORY CO., Ltd. June 12, 1939, No. 17161. [Class 78 (iii)] A U-shaped leg 9, pivoted to the platform of a hydraulic garage hoist to engage a selected recess in the ring of recesses 9B in the base member and thus supporting the platform in its raised position in addition to holding it against undesired slueing, is supported on the arm 15A of a bell-crank when in the horizontal position but is released by the contact of the weighted or spring-mounted arm 15B with the ground, so that it falls automatically by gravity into the acting position whenever the platform is raised. A series of such legs may be used to support the platform at various levels.
Patent GB-278793-A (GB)
Title: Improvements in and relating to variable electric condensers
IPC: H01G5/38
Filed: 1926-07-08
Abstract: 278,793. Hall, A., and Ferranti, Ltd. July 8, 1926. Wireless tuning-apparatus, adjustment devices for.-A variable condenser operated by reduction gearing has indicating means associated with the operating member and further indicating means associated with the movable element of the condenser, so that a direct and a magnified indication. of movement in the position of the latter is obtained throughout its range, the two indicating means being coaxial. One construction is shown in elevation in Fig. 1 and in section on the line A-A in Fig. 3. The spindle c of the movable element of the condenser carries a toothed wheel d which meshes with a pinion e rigid with an intermediate toothed wheel f. mounted on a fixed spindle h. Engaging with the wheel d is a driving-pinion g fast with a spindle o, to the upper end of which is attached the operating-knob r. Coaxial with the spindle o is a sleeve i carrying a crank m which engages a pin n on the toothed wheel d fixed to the condenser spindle c. The sleeve j carries a pointer which indicates on a fixed dial p the position of the moving element of the condenser. The knob r carries a second pointer which gives a magnified indication on the same dial. In order to prevent backlash a gear wheel may be formed of two identical gear-wheel elements 2, 3, Fig. 5, having between them a spring 4 which tends to cause relative rotation. The element 2 is fixed to the driving or driven sleeve 6<a>, the element 3 being free to rotate thereon. An alternative means of preventing backlash is shown in Fig. 6, in which the intermediate wheel unit comprising wheels 7, 8 is mounted on an eccentric pin 9, which may he rotated and locked in position by a screw 10 so as to throw the wheel 8 closer into mesh with the pinion 11. The wheel 7 has its teeth cut at an angle to the axis and is thrust axially by a spring 13. In a modification the condenser spindle is actuated by means of epicyclic gear at its lower end, the spindle being bored axially to take the operating-spindle. The upper end of the condenser spindle carries the direct indicating pointer.
Patent GB-954581-A (GB)
Title: Improvements in or relating to cathode ray tubes
Inventor: BURTT ROGER BRIAN
IPC: H01J31/50
Filed: 1961-05-11
Abstract: 954,581. Television pick-up tubes. ENGLISH ELECTRIC VALVE CO. Ltd. March 30, 1962 [May 11, 1961], No. 17222/61. Heading H1D. A cathode ray tube of the kind comprising at least two photo-cathodes comprises at least two separately manufactured sections each completely enclosing a volume bounded by the walls of the section in question, each of the sections housing a photo-cathode and no section containing within its volume more than one photo cathode. The separately manufactured sections are preferably closed at one end by a glass or like membrane having a photo-cathode formed on the inside, and may also have a phosphor deposited on the outside. A method of manufacturing an image intensifier camera tube of the image orthicon type includes the steps of separately manufacturing at least two sections 1, 12 each having one closure wall constituted by a glass or like membrane 2, 13, and each having a photo-cathode within it, fitting an envelope wall member 3 to the membrane end of one of the sections, mounting a temporary closure member 8 having an openable valve 9 over the far end of the envelope wall member, simultaneously exhausting the space between the closure member 8 and the membrane 2 and the section 1, fitting a second temporary closure member 18 over the membrane end of the other section 12 and exhausting the space between membrane 13 and member 18 and the section 12, bringing the two temporary closure members together, processing the photo cathodes when the spaces in which they are situated are in exhausted condition, opening by-pass valves 9, 26 and exhausting the spaces into assembly which are put into communication through the by-pass valves, sliding valves 8, 18 so that section 12 may be slid to bring membranes 2, 13 into contact, fixing the sections in their new relative positions and removing the temporary closure members.
Patent GB-515711-A (GB)
Title: Improved apparatus for wrapping cylindrical articles
IPC: B65B11/04
Filed: 1938-06-09
Abstract: 515,711. Wrapping - machines; blasting - cartridges. ASHCROFT, D. G., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 9, 1938, No. 17230. [Class 94 (i)] [Also in Group XXI] A machine for wrapping cylindrical articles such as blasting-cartridges with a substantial thickness of safety sheathing material comprises two sets of driven. rollers 47, 48 and 53, 54. The cartridge 61 is thrust longitudinally into position between the rollers, and a sheet of sheathing material provided at the rear edge with a thin strip of outer wrapping material tipped with adhesive is laid on a feed platform 39 and pushed beneath tensioning fingers 38 until its forward edge is nipped between the cartridge and the roller 48. The rollers are rotated and the sheath and wrapper are guided round the cartridge by guides 59, 60. The rollers 53, 54 gradually rise as the diameter of the wrapped cartridge increases and the fingers 38 regulate the tension. When the adhesive part of the wrapper passes over.the table, the fingers 38 are raised to avoid fouling. When wrapping is complete, the rollers 53, 54 are raised clear, and the wrapped cartridge is displaced by the feeding of a fresh one into position. The wrapping rollers are divided at intervals along their length to accommodate a series of guides. Retractable centering fingers prevent longitudinal movement during wrapping. The parts may be inter-changeable to allow of the wrapping of articles of different sizes, The sheathing material may be as described in Specifications 416,586 and 424,784, [both in Group XXI].
Patent GB-1472313-A (GB)
Title: Kit for the assembly for model or toy vehicles
IPC: A63H17/02
Filed: 1974-04-19
Abstract: 1472313 Toy vehicle kits F WIKSTROM 19 April 1974 [27 April 1973] 17344/74 Heading A6S Toy vehicle, train, or aeroplane, building elements 3-10 simulate damaged body parts of the vehicle which may be fitted to a main body part 11 interchangeably with building elements 33, 37, 40, 43, etc. which simulate undamaged examples of the same body parts.
Patent GB-303331-A (GB)
Title: Improvements in bodies for vehicles
IPC: B62D47/00
Filed: 1928-06-15
Abstract: 303,331. Garfield, E. I. June 15, 1928. Bodies.-In road vehicles the body comprises a single rigid structure or a number of rigid sections, the structure or each section being rigidly fixed to the chassis upon one or two spaced transverse supports in a balanced position and between the dash and the structure or adjacent section and between adjacent sections resilient connecting means are provided to permit relative movement between the parts connected. Fig. 2 shows a body comprising sections G<1> - - G<3> each mounted on a transverse member A such that the section is balanced thereon, and between the dash and section G<1> a resilient connection C is provided and resilient connections B are provided between adjacent sections. In another form, as shown in Fig. 4, each section is mounted on spaced transverse members A. To compensate for the overhang of long rigid sections resilient supports H, Fig. 6, may be used. Fig. 7 shows the position of the supports P' - - P<3> on the transverse members.
Patent GB-793262-A (GB)
Title: Improvements in and relating to alarm and control apparatus in connection with level of liquids in tanks and boilers
IPC: G01F23/32
Filed: 1955-06-16
Abstract: 793,262. Indicating liquid levels. STOKOE, C. L., and MONITOR PATENT SAFETY DEVICES, Ltd. Aug 2, 1956 [June 16, 1955], No. 17368/55. Class 123(1) In a float-operated high and low level alarm apparatus of the kind described in Specifications 327,515 [Class 123(i)], 531,503 and 594,303, the spindle p which is rotated by the arm b of the float a projects from the float chamber c and carres on its projecting end a boss m. The lower half of the boss is surrounded by the semi-circular end o of a lever e pivoted about halfway along its length, the other end f of the lever being pressed downwardly by a spring h upon the stem g of a pilot valve controlling the supply of compressed air or steam to a whistle l, or to a liquid supply pump, to hold the valve in the closed position. When a high level alarm or control at a preset high level is required a tappet d is screwed into a threaded hole in the right hand side of the boss m so that it engages and depresses the right hand side of the lever portion o, allowing the air or steam valve to open, when the float rises to the preset level. Similarly, when a low level alarm &c. is required the tappet is inserted into a threaded hole provided in the left hand side of the boss to engage and depress the left hand side of the portion o allowing the valve to open when the float falls to a preset low level.
Patent GB-1472061-A (GB)
Title: Hydrogenation
IPC: B01J23/52
Filed: 1974-04-08
Abstract: 1472061 Hydrogenation JOHNSON MATTHEY & CO Ltd 8 April 1974 [11 April 1973] 17446/73 Heading C5E Organic compounds having isomeric forms are hydrogenated in the presence of a catalyst comprising less than 1 wt. per cent finely divided gold on a porous support and is formed by adsorbing a solution of a gold compound, e.g. chloroauric acid, into a porous support and then converting to the metal, e.g. by heating or reduction. The support may be silica, #-alumina or boehmite. Examples describe the hydrogenation of 1-pentene at 100‹ C. and a flow rate of 10 cm.<SP>3</SP>/min. over 0À2 g. catalyst using 1À2 torr 1-pentene and 758À8 torr H 2  to give n-pentane. The selective hydrogenations of butadiene and butyne-2 to butenes are also described.
Patent GB-1396696-A (GB)
Title: Sensitive silver halide photographic materials
IPC: G03C1/09
Filed: 1971-05-27
Abstract: 1396696 Sensitizing silver halide KODAK Ltd 15 Aug 1972 [27 May 1971] 17506/71 Heading G2C A method of chemically sensitizing a silver halide comprises treating the halide in an aqueous medium with a water-soluble telluropentathionate. The telluropentathionate is preferably an ammonium or alkali metal salt e.g. Na 2 Te(S 2 O 3 ) 2 . 2H20, the treatment taking place at a temperature of 50 to 70‹C. The silver halide, which is preferably in an emulsion, may also be sensitized with a noble metal and/or reduction sensitizer.
Patent GB-1029763-A (GB)
Title: Electric switches
IPC: F23N5/08
Filed: 1964-04-28
Abstract: 1,029,763. Mechanical switches, without quick action. SWF-SPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU G.m.b.H. April 28, 1964 [May 6, 1963], No. 17520/64. Heading H2B. A switch has three consecutive switch positions, and switching between the two switch positions of either pair of adjacent positions in said series of three positions (the middle switch position of the three being common to both pairs) is in both cases opposed resiliently to a lesser degree than switching out of the relevant pair to the other position of the three. An indexing mechanism comprising a spring-pressed ball 17 co-operating with notches such as 18, 19, in a cover-plate 2, has ready switching between the two positions in each notch 18 or 19 but requires a greater switching force to move the ball 17 across the cross-piece 20 separating notches 18, 19. In an alternative embodiment (Fig. 5, not shown), including a pivotal arm 21, the ball moves easily from notch 25 to notch 22, carrying arm 21 with it, but a greater force is necessary to move the ball from notch 22 to notch 24 as the arm 21 engages a stop 23 and the ball has to cross over the arm 21 before entering notch 24. A similar action occurs with movement in the opposite direction from notch 24 to notch 25. The spring-pressed ball 17 is carried in a bore in a part pivoted between the cover-plate 2 and a fixed contact-carrying baseplate 1, the pivotal part carrying a resilientlymounted, rigid moving contact for co-operating with the fixed contacts in each of the indexed positions of the pivotal part (Figs. 2-4, not shown),
Patent GB-1165485-A (GB)
Title: Polyurethane Elastomers
Inventor: SAUNDERS JAMES HENRY
IPC: C08G18/10
Filed: 1968-04-11
Abstract: 1,165,485. Polyurethane elastomers. MOBAY CHEMICAL CO. 11 April, 1968 [12 April, 1967], No. 17595/68. Heading C3R. Polyurethane elastomers having a Shore A hardness of 45 to 55 are prepared by reacting (1) 4,41-diphenylmethane diisocyanate with (2) 0.2 mol. to 0.4 mol. per mol. of (1) of a linear hydroxyl terminated polyethylene adipate of M.W. 1500 to 2500 and (3) a polyester composition present in an amount such that the overall NCO to OH ratio is 1: 1 to 1À2: 1 and comprising (A) 70 to 100% by weight of a linear hydroxyl terminated polyester which is a polyethylene-alkylene adipate having a M.W. 1500 to 2500 and an acid number of not more than 0.5, which alkylene portions contain 3 to 6 carbon atoms and are the residue remaining after the removal of two hydroxyl groups from a glycol having at least one secondary OH group, the ethylene portions being present in an amount of 60 to 90 mol. per cent and the alkylene portions 10 to 40 mol. per cent; and (B) 0 to 30 weight per cent of a trifunctional polyester having a M.W. of 750 to 1500. The reactants may be all mixed together but the polyethylene adipate is preferred first reacted with the diisocyanate to form a prepolymer which is then reacted with the polyester composition (3). The polyester (A) is suitably a polyethylene-propylene adipate and the polyester (B) a reaction product of adipic acid, 1,4- butanediol and 1,2,6-hexanetriol.
Patent GB-1155570-A (GB)
Title: Improvements in and relating to the manufacturing of omega-Hydroxy Acids
Inventor: BEESLEY STANLEY
IPC: C07C51/285
Filed: 1966-04-22
Abstract: 1,155,570. # - Hydroxycarboxylic acids. COURTAULDS Ltd. 19 Oct., 1966 [20 Oct., 1965; 22 Nov., 1965; 4 March, 1966; 22 April, 1966], Nos. 44364/65, 49538/65, 9507/66 and 17659/66. Heading C2C. Saturated aliphatic #-hydroxy carboxylic acids and ester derivatives thereof are prepared by the oxidation of an alicyclic ketone by heating a solution of hydrogen peroxide or a ketone peroxide and a free heteropoly acid catalyst with an excess of the substantially anhydrous alicyclic ketone. Cyclobutanone, cyclopentanone, cyclohexanone, cycloheptanone are mentioned which produce 4-hydroxybutyric, 5- hydroxyvaleric, 6-hydroxycaproic, 7-hydroxyenanthie acids and/or the lactones and polyesters thereof respectively. The ketone peroxide which preferably contains the ketone residue corresponding to the acyclic ketone is an equilibrium mixture of a 1-hydroxy-cycloalkyl hydroperoxide and its bis- and tris-polymers and the preparation of a cyclohexanone peroxide equilibrium mixture is described. Many heteropoly acids are listed. Examples describe the preparation of 6-hydroxycaproic acid from cyclohexanone, cyclohexanol hydroperoxide and 12-tungstophosphoric acid and adipic acid and adipaldehyde are by-products; 5-hydroxyvaleric acid from cyclopentanone, cyclohexanone peroxide and 12-tungstophosphoric acid. The reactions may be batchwise or continuous and an apparatus suitable for continuous operation is described.
Patent GB-1357999-A (GB)
Title: Tankers
IPC: B63B25/12
Filed: 1972-04-17
Abstract: 1357999 Marine tankers T BRAATEN 17 April 1972 [19 April 1971] 17677/72 Heading B7A Each compartment of an oil tanker has a smooth inner liner to reduce wear on one or more plastics bags which contain the compartment's cargo. Each compartment has a hatch cover which carries the bag(s) so that the bag(s) can be readily removed when empty. As illustrated the hatch cover 11 carries two bags 9, 10, which are located one within the other and which have filling openings 14 and 15. Each bag, when full, occupies the whole compartment so that the compartment can carry full cargoes of different liquids. Alternatively,  the bag 10 may be used part-full so that the compartment can carry two liquids at once. A pump 7 may be introduced for discharging cargo. To facilitate collapsing and folding the bags against the hatch cover, cords may be attached to the insides of the bags.