baber/WOPTO huggingface dataset:
Patent GB-912024-A (GB)
Title: Process and apparatus for the screening of pulverulent and fine granular materials
IPC: B07B1/38
Filed: 1959-10-21
Abstract: 912,024. Screening apparatus. MIAG MUEHLENBAU UND INDUSTRIE G.m.b.H. Oct. 21, 1959 [Oct. 28, 1958], No. 35624/59. Class 117. 7. A plansifter, to which material to be treated is fed at 11, consists of an assembly of four screen compartments 30 and an inspection compartment 20 located between a head compartment 10 and a base compartment 40. Passages 1-8, which receive various grades of screened material, are circumferentially spaced within an annular chamber between walls 31, 32, and aspirating air passes upwardly through these passages to carry off dust &c. before each grade falls to its separate outlet 41. Aspirating air passes into the base compartment through a pipe 46 and filter cloth 47, and flows in the direction of the arrows upwardly through the passages 1-8 and then radially inwardly through passages 13 controlled by butterfly valves 14 to an outlet 12. The inspection compartment 20 has transparent walls and a light source 23, and material flows through a tube 22 in this compartment to the uppermost screen compartment. Material not passing through the circular screen covering 33 flows through passages 38 in the inner annular compartment wall to one of the passages 1-8, whilst material passing through the screen falls through an opening 39<SP>1</SP> to the screen below. Material not passing this screen flows similarly to a different one of the passages 1-8, and so on. Each screen covering is attached to a ring 36, Fig. 3, placed over a collar 34 and held taut by a further ring 37 having an undulating inner surface. The various compartments are held together by stays 51, Figs. 2 and 3, and the assembly is attached to a framework 54, Fig. 3, by brackets 53 and screws 52. Fig. 4 shows two such assemblies mounted on a suspended framework 54 oscillated by a drive shaft 58 carrying weights 57.
Patent GB-858440-A (GB)
Title: Sugar esters
IPC: C07H13/06
Filed: 1958-11-07
Abstract: Partial esters of mono or di-saccharides are prepared by dissolving said mono or di-saccharides in water, rendering the solution alkaline and introducing a halide of an alkyl carboxylic acid having from 8-22 carbon atoms in the molecule into said solution while maintaining the solution alkaline, and the temperature below 50 DEG  C.  In a preferred method, the saccharides are dissolved in water in the ratio by weight of 1-0,5 water : 1 saccharide, the solution is made alkaline by adding aqueous alkali metal hydroxides, carbonates or bicarbonates, e.g. in a 50% solution, acid chloride or other halide is then added to the stirred mixture in an amount insufficient to combine with all the hydroxyl groups, preferably in an approximately equimolecular amount in relation to the saccharide, concentrated alkali being added to maintain the pH between 8 and 11 and the temperature being maintained at 40-50 DEG  C.  When the addition is completed, the mixture is stirred for one to two hours then filtered or centrifuged.  The solid reaction product which is a mixture of saccharide esters and soap may be purified by dissolving the esters in an organic solvent in which the soap is insoluble, or by acidifying the product to liberate the fatty acids from the soap and dissolving the acids in a solvent in which the esters are insoluble.
Patent GB-1477457-A (GB)
Title: Method and apparatus for testing the properties of liquids
IPC: G01N1/14
Filed: 1973-07-27
Abstract: 1477457 Electrical testing of liquid GEORGE KENT Ltd 25 July 1974 [27 July 1973 26 Nov 1973] 35797/73 and 54777/73 Heading G1N Apparatus for measuring a property of a liquid comprises a probe 14 for sensing the property mounted in an open ended duct having a vertical portion 16 and at least its lower end immersed in the liquid and means 31 for injecting gas into the duct so that it entrains liquid and causes a flow of liquid past the probe. The probe is mounted in chamber 10 with its sensor part 14 extending into skirt 11 which with strainer 22 forms the lower end of the duct. Skirt 11 and the continuation 18, 17 of the duct are shaped to produce turbulent flow around the probe, thus helping to keep it clean. The vertical part of the duct 16 is connected to valve 21, which comprises elastic tube 40 which can be squashed by gas pressure at 41, and compressed gas inlet 31. The apparatus is immersed in the liquid so that outlet 39 is just above the liquid surface. The entrained gas from 31 produces a flow of liquid from outlet 39 and a corresponding flow in past the probe. Cleaning. To clean the electrode and strainer, valve 21 is closed and the gas supply is continued. The liquid level is forced down past the electrode and cleans it and cleans the strainer. If the sensor measures oxygen in water and the compressed gas is air, the sensor can be calibrated during this cleaning as it is surrounded by the oxygen in air. The chamber 10 may be extended upwards and contain two electric motors and air compressors, one which runs continuously for supply to 31 and the other producing an intermittent supply to the valve.
Patent GB-861438-A (GB)
Title: Polymerisation of organic compounds
Inventor: COOPER WILFRED
IPC: C08F2/46
Filed: 1956-11-24
Abstract: Liquid homopolymers or copolymers are made by subjecting an aqueous medium containing one or more ethylenically unsaturated compounds and a mercaptan to the action of light.  Unsaturated compounds specified are methyl and ethyl acrylates, C1-C4 alkyl methacrylates, butadiene and isoprene and mixtures of dienes with methyl acrylate, methacrylic acid or styrene.  Mercaptans specified are octyl, decyl, n-dodecyl, tert-dodecyl, tetradecyl and hexadecyl mercaptans, including a mixture of tert.-dodecyl, tert.-tetradecyl and tert.-hexadecyl mercaptans.  Polymerization is preferably carried in the presence of a photosensitizer, e.g. anthraquinone, 1-chloroanthraquinone, dichloramine B, N-bromosuccinimide, diazotized sulphanilic acid, azobisisobutyronitrile, diacetyl, benzil, benzoin, uranium dioxide, uranyl nitrate and iron salts, including mixtures of substances which absorb light of different wavelengths, e.g. benzoin and uranyl nitrate.  Polymerization may also be carried out in the presence of potassium persulphate as an initiator.  The illumination used may consist of light having a wavelength in the region of 2,000-7,000  . The aqueous polymerization medium may contain an emulsifier such as potassium oleate, sulphated methyl oleate or the sodium salts of higher secondary alkyl sulphates.
Patent GB-759737-A (GB)
Title: Improvements in filter media
Inventor: KOMLINE THOMAS RAYMOND
IPC: B01D33/00
Filed: 1954-12-13
Abstract: 759,737. Filters. KOMLINE-SANDERSON ENGINEERING CORPORATION. Dec. 13, 1954, No. 36032/54. Class 46. A filter medium comprises a plurality of helical coils 10, Fig. 1, of spring wire, each having a substantially cylindrical outer surface and a threaded inner surface engaging a threaded stud 11 whereby the coils may be connected together in series. The elements 10 are formed by winding wire of circular crosssection and then grinding the outer surface to reduce the coil diameter from x to x<SP>1</SP> and so provide the cylindrical outer surface. The filtering interstices are provided between adjacent turns by tensioning the connected coils or by wrapping the assembly of coils round a cylindrical surface. The internal space of each element between the end studs may be filled with impervious rubber or with pervious fibre glass or charcoal. In a modification a coil 10a, Fig. 6, is formed by winding wire of polygonal cross-section with flat faces abutting, an exterior flat face and interior ridges. For use in a pressure filter a series of coils 10a, Fig. 7, is wound round a pervious cylinder 16 having a clean liquid outlet 19 and located within a pressure tank 17 having an inlet 18 and a back flushing outlet 20. A vacuum filter comprises an endless band 13, Fig. 8, of parallel coils passing round a vacuum drum 21, a guide 23 and a discharge roller 22.
Patent GB-363111-A (GB)
Title: Apparatus for measuring the lengths of cloth
IPC: G01B5/04
Filed: 1930-12-01
Abstract: 363,111. Measuring and marking fabrics. VREDEN, H., 84, Mussfeldstrasse, Duisburg, Germany. Dec. 1, 1930, No. 36137. [Class 42 (ii).] A cloth-measuring machine has a length indicator d and a printing mechanism e driven from the drum a, rotation of the crank shaft h at the end of a measuring operation snipping the cloth by means of the cam i and knife m, pressing a ticket q against an inked tape in front of the printing mechanism e by means of the lever o and cam n, releasing the indicating and printing mechanism by the lever s and cam r to allow them to return to zero, and depressing the pressure roller b by means of the cam u. The frame w carrying the roller b is then engaged by the press button 5, and a lever 2 pivoted to the frame and carrying a pendulum part 4 is projected through the cloth-supporting plate as shown in Fig. 4. At the next operation the cloth edge is placed against the lever 2, but if incorrectly placed it deflects the lever 2 and the pendulum 4 engages a recess in the button 5 and prevents this being pressed to allow the bottom roller b to be pulled against the roller a by the spring 7. Reference has been directed by the Comptroller to Specification 123,725, [Class 42 (ii), Fabrics, Treating otherwise &c.].
Patent GB-1404017-A (GB)
Title: Alumina extrudates
IPC: C01F7/025
Filed: 1972-08-02
Abstract: 1404017 Alumina extrudates CONTINENTAL OIL CO 2 Aug 1972 [2 Aug 1971 20 Oct 1971 3 July 1972] 36149/72 Heading C1A Alumina extrudates having (a) a surface area of at least 150 m.<SP>2</SP>/g., (b) a cumulative pore volume (0-10,000 ) of at least 0À8 cc./g. and (c) a bulk density of not more than 35 lb./ft.<SP>3</SP>, are obtained by extruding an alumina hydrate and water mixture, wherein the alumina has been prepared from an aluminium alkoxide. The extrudate may have a surface area of up to 400 m.<SP>2</SP>/g., a pore vol. up to 2À0 cc./g., a bulk density minimum of 15 lb./ft.<SP>3</SP> and a diam. of <SP>1</SP>/ 32 - inch. The alumina hydrate may have a surface area of 250-500 m.<SP>2</SP>/g., a pore vol. of 0À8-2À5 cc./g., a bulk density of 8-35 lb./ft.<SP>3</SP> and an Al 2 O 3  content of 73-100% by wt. The alumina hydrate may be prepared by hydrolysing aluminium alkoxides, produced by the Ziegler process and containing 2-26 carbon atoms in each alkoxide group, separating the aq. phase from the organic phase, mixing the aq. phase with an organic solvent, e.g. a C 1 -C 4  alcohol or acetone, and then finally drying the mixture. The water added to the alumina prior to extrusion may contain up to 5% of an acid, e.g. a mineral acid or a C 1 -C 3  aliphatic acid, optionally halogenated, or an alkaline substance, e.g. NH 3  or ammonium carbonate. The extrudate may be dried at 250 F. and then calcined at 900-1000 F.
Patent GB-897206-A (GB)
Title: Torque reaction dynamometer for testing small motors
Inventor: NAGY FRANCIS
IPC: G01L3/22
Filed: 1959-10-26
Abstract: 897,206. Electromagnetic dynamometers. VECTRON ELECTRO-PHYSICS Ltd. Oct. 17, 1960 [Oct. 26, 1959], No. 36270/59. Class 35. A dynamometer for testing small motors 26 comprises an eddy-current disc 37 passing through air-gaps 20, 21 in electromagnetic cores 18, 19 rockably mounted on horizontal shaft 17, measured restoring torque being provided by a beam 38 having scale markings and a cursor weight 40. Brackets 48, 51 mounted on the base carry datum lines to which corresponding lines on beam 38 are adjusted before reading off the torque with the cursor. The centre of gravity of the rotating assembly may be adjusted by moving milled nuts 43, 45 on threaded rods carried by the magnetic cores. The motor is secured by a clamping-bar 30, and its speed may be determined from the rate of rotation of the disc by magnetic or photoelectric means.
Patent GB-323888-A (GB)
Title: Improvements in or relating to vacuum electric tube devices
IPC: H01J1/20
Filed: 1928-12-08
Abstract: 323,888. Robinson, E. Y., Hubbard, E. J. E., and Associated Electrical Industries, Ltd. Dec. 8, 1928. Vacuum tubes.-An indirectly heated cathode consists of a heater enclosed in insulating- material and surrounded by a separately formed cathode tube which, after being assembled, is distorted or deformed so as to make contact with the insulating-material at one or more points. In one example, a straight tungsten heater wire 1; coated with porcelain 2 as described in Specification 278,787, is inserted into a straight nickel tube 3 which is then pressed into the form shown in Fig. 2 so as to make contact at a number of points 4. If desired, the bending may be so effected that the insulator is deformed so that, if the tungsten core be held in tension, considerable pressure is exerted between the insulator and the surrounding metal tube. Instead of being corrugated, the tube 3 may be given a slight curvature, or two heater members 15 may be placed side by side and the surrounding metal tube 16, Fig. 5, crimped at 17 at the ends and middle or at points between the ends. The insulator may be provided with depressions which interlock with the tube when this is deformed. Fig. 4 shows an arrangement wherein two curved cathode elements 7 having their heater wires 5 joined at 8 are assembled within a flattened grid formed of support wires 12 round which a wire 13 is wound. The wires 5 are connected to leadin wires 9, 10 which may be arranged in parallel.
Patent GB-794805-A (GB)
Title: Improvements in or relating to multi-speed toothed-wheel change-speed gears
IPC: F16H47/07
Filed: 1956-11-27
Abstract: 794,805. Change speed gearing. ZAHNRADFABRIK FRIEDRICHSHAFEN AKT.-GES. Nov. 27, 1956 [Dec. 1, 1955], No. 36295/56. Class 80 (2). In a countershaft change speed gear having two pairs of constant mesh gears, the lowest speed is effected through a fluid torque converter, at least one intermediate speed is effected. through one pair of constant mesh gears and a fluid coupling controlled by filling and emptying, and a direct speed is provided. In the embodiment shown in Fig. 1 the lowest speed from a driving shaft 1 to a driven shaft 2 is through a fluid torque connecter 5, 4, 6, hollow shaft 7, constant mesh gears 8, 9, layshaft 10 clutched at 20 to a hollow shaft 17 having a gear 16 meshing with a gear 18 on the driven shaft 2. The intermediate speed is provided by filling a fluid coupling 14, 15 connected to the driving shaft 1 and a hollow shaft 13 rigid with a gear 11 forming one of a pair of constant mesh gears 11, 12, the gear 12 being rigid with the shaft 17 and driving the driven shaft 2 through gears 16, 18. The highest speed is provided by the engagement of a direct drive friction clutch 3 between the driving 1 and driven 2 shafts. In a second embodiment providing five speeds, a pair of alternately clutchable gears are rigid with the hollow shaft 17 and mesh with gears rigid with the driven shaft 2.
Patent GB-829581-A (GB)
Title: Improvements in or relating to the disposal of noxious gases containing nitrogen oxide fumes
IPC: C01B21/20
Filed: 1956-11-27
Abstract: <PICT:0829581/III/1> Noxious gases containing nitrogen oxide fumes are made innocuous by producing a gas free from nitrogen oxides and hydrogen cyanide by adding a reducing gas and passing the resulting mixture first over a noble metal catalyst then over a heterogeneous gas phase reduction catalyst, the catalysis being conducted at 100 DEG  C. to 1000 DEG  C., preferably 500-1000 DEG  C.  Reducing gases may be natural gas, methane, ethane, propane, butane, or mixtures thereof alone or with hydrogen, oil or coke oven hydrocarbon gas, or hydrogen alone.  40% H2 may be used with an alkane, and the presence of H2 renders preheating of the catalyst layer unnecessary. The gases treated may be those containing NO, N2O and/or NO2, from the HNO3 oxidation of cyclic alkanones or cyclic alkanols or from the oxidation of NH3 to HNO3. A mixture of natural gas and air enters catalyst converter 1 through inlet manifold 7 and is ignited by spark plug 9.  The resulting gas flame is passed through catalyst bed 2, which is divided into at least two layers with, or without a gas permeable partition 2a, until the desired temperature is attained. The air feed is discontinued, the gas containing nitrogen oxides after passing through preheater 10, or not, enters converter 1 at 6 and natural gas, with or without H2, enters through distributer 4. Steam or nitrogen enters through inlet manifold 7 and gas, wherein the nitrogen oxides have been converted to N2, and containing CO2 and H2O is withdrawn from outlet 8 through heat exchanger 10 to stack. The temperature is controlled by the extent of preheating, by the amount of steam, or nitrogen used, and by water jacket 3, in response to indications of thermocouple in well 11.  The first catalyst is a thin layer of gold, ruthenium, iridium, platinum, rhodium or palladium, or mixtures thereof, as gauzes, or mats, or supported on alumina, infusorial earth or kieselguhr.  The second catalyst is nickel on alumina or nickel aluminate, copper chromite, copper impregnated alumina, or oxides of metals, such as titanium, calcium, cerium, zirconium, aluminium, thorium, tin, tungsten, molybdenum, niobium, chromium, manganese, zinc, copper, cobalt, nickel and iron, particularly mixed oxides of copper and chromium and of nickel and chromium.  The nickel on alumina is prepared by precipitating basic nickel carbonate with ammonium carbonate or bicarbonate on alumina hydrate, dried and calcined to convert nickel salt to oxide and dehydrate the alumina, the nickel oxide is reduced to nickel, and the mixture of nickel and alumina is mixed with a volatilizable lubricant, e.g. high melting wax, pelleted, heated to 500 DEG  C. in O2, and finally heated to 1050 DEG  C.
Patent GB-302238-A (GB)
Title: Improvements in or relating to television systems
IPC: H04N3/34
Filed: 1928-01-11
Abstract: 302,238. Electrical Research Products, Inc., (Assignees of Ives, H. E., and Gray, F.). April 6, 1927, [Convention date]. Divided on 288,234. Drawings to Specification. Television.-The drawings and description are identical with those of Specification 288,234 but the claims relate to the receiving apparatus, in which a neon lamp of large area is viewed through a scanning device and fluctuates in brightness as a whole.
Patent GB-971400-A (GB)
Title: Improvements in or relating to supports for shelving and the like
Inventor: SMYTH-TYRRELL ANTHONY JAMES
IPC: A47B57/04
Filed: 1962-09-26
Abstract: 971,400. Shelf brackets. STORAX Ltd. Sept. 24, 1963 [Sept. 26, 1962], No. 36564/62. Heading A4B. A shelf bracket 2 has headed studs 3 which engage slots S in uprights 1, the slots being of arch shape and having recesses Aa, Sa so that by appropriate selection of the recess in which the stud fits the shelf may be placed in any one of three angular positions as shown by brackets 2A, 2B, 2C.
Patent GB-1404696-A (GB)
Title: Heat-sensitive copying method for preparing printing stencils
IPC: B41C1/055
Filed: 1973-08-01
Abstract: 1404696 Thermographic processes for producing stencils ASAHI DOW Ltd and RISO KAGAKU CORP 1 Aug 1973 36613/73 Heading G2C A thermographic process for producing a stencil comprises imagewise exposing a heat-sensitive stencil comprising an ink-pervious stencil support and a layer of a biaxially stretched thermoplastic film, the film being stretched to at least 2.5 times its original longitudinal and transverse directions, to flash lasting between 10<SP>-4</SP> and 10<SP>-3</SP> of a second and in which at least 50 per cent of the radiation longer than 0.7 micron emitted to between 0.7 and 1.2 microns to produce perforations in the film. The film may be a vinylidene chloride/vinyl chloride copolymer, polyvinylidene chloride, polypropylene, polyethylene or polyvinyl acetate which has been biaxially stretched 2.5 to 6 times.
Patent GB-1400747-A (GB)
Title: Electrolytic surface roughening of sheet steel or steel plate
IPC: C25F7/00
Filed: 1972-08-11
Abstract: 1400747 Electrolytic roughening of steel KAWASAKI SEITETSU K K 11 Aug 1972 36823/73 Divided out of 1400746 Heading C7B A steel sheet 11 is electrolytically roughened as anode while fed between cathode plates 14, 14' with etching solution (e.g. H 2 SO 4 ) being forcibly injected into spacings d from nozzles 16, 16' at each side of the strip's width. Reservoir 18 receives solution from the spacings d and pumps 17 delivers it to the nozzles. The rate of flow of solution through the spacings d is such as to prevent hydrogen gas from being trapped on the steel surface. Cover-plates 15, 15', guide rolls 12, 13 and wiping rollers 19, 24 are provided. Direct current is is supplied to the sheet 11 through anode plates 20, 20' and current carrying fluid (e.g. H 2 SO 4 ) which is pumped under pressure through nozzles 21, 21 into spacings d . The etching produces rectangular pits with stepped side walls which render the steel suitable for vitreous enamelling. The steel may be (1) electrolytically roughened, (2) Ni plated or phosphated, (3) coated with water glass (see the claims of the parent Specification, Serial No. 1.400746, (4) coated with wax, (5) shaped by pressing, (6) washed to remove the water glass and wax and (7) vitreous enamelled. An electrolytic roughening process (not in accordance with the invention) is illustrated in Fig. 2 (not shown). This is also described in the parent Specification 1400746. (See the abridgment thereof.)
Patent GB-1435490-A (GB)
Title: Compressed gas dryer assembly tare setting
IPC: F04B39/16
Filed: 1972-08-08
Abstract: 1435490 Air cooling installations; refrigerating GALINDALE Ltd 9 July 1973 [8 Aug 1972] 36864/72 Headings F4S and F4H [Also in Divisions B1-B2] In a compressed gas dryer assembly comprising a tubular chamber 1 surrounded by a cooling jacket 3 which forms the evaporation chamber of a refrigeration circuit, means 6, in the form of inclined vanes, blades or nozzles, are provided for imparting a rotary movement about a central tube 2 to compressed air entering the chamber 1 through an inlet 4. Moisture condensing out of the air flow as it is cooled is collected in a moisture trap 7 from which it is removed from time to time via a drain plug (8, Fig. 1). Dried compressed air leaves the chamber 1 via the central tube 2. The refrigeration circuit also includes a compressor 9, a condenser 10, a thermostatic expansion valve 13, and a constant pressure valve 14.
Patent GB-407490-A (GB)
Title: Improvements in or relating to machines for steaming textile fabrics
IPC: D06C7/00
Filed: 1932-12-31
Abstract: <PICT:0407490/IV/1> In a machine for "blowing" or steaming textile fabrics, the fabric, enclosed between endless wrappers, is passed about two or more perforated steaming cylinders, arranged to rotate at the same surface speed.  As shown, fabric a enclosed between endless wrappers d, e, passes about three perforated steaming cylinders g, g<1>, g<2>, which may be arranged to nip the material, thence over a rotating blade i to remove steam, between hollow rollers j, k, which can be heated or cooled, then about a perforated suction cylinder m and finally to a cuttling device of known type.
Patent GB-1069556-A (GB)
Title: Fluid seal
IPC: F16J15/32
Filed: 1965-08-27
Abstract: 1,069,556. Piston and piston rod packing. MINNESOTA RUBBER CO. Aug. 27, 1965 [June 24, 1965], No. 36989/65. Headings F2B and F2T. Sealing means between relatively movable members, such as a piston 7 or piston rod (8) and cylinder 6, comprises a continuous flexible sealing ring 9 of channel section housed in a groove 7a in one of the members and urged into contact with the other member by a back-up ring 10 of resilient material having both its inner and outer peripheral surfaces concave at 10a and 10c to provide projecting corners 10e, 10h and 10f, 10g respectively whereby the ring 10 engages the bottom of the groove at points 14 and 15 and the ring 9 at points 16 and 17. The sides of the ring 10 are also concave at 10b and 10d. The ring 10 is of rubber and the ring 9 of polytetrafluoroethylene.