baber/WOPTO huggingface dataset:
Patent GB-759839-A (GB)
Title: Improvements relating to couplings between rotatable driving and driven members
Inventor: GILL GEORGE
IPC: F16D3/221
Filed: 1952-11-12
Abstract: 759,839. Universal joints. FISHER & LUDLOW, Ltd. Feb. 9, 1954 [Nov. 12, 1952], No. 28473/52. Class 80(2) A coupling which may be used in motor vehicles or for driving machinery from line shafting in a workshop, is described applied to the washing &c. machine of Specification 759,836 (see Group VIII) and comprises a driving shaft 14 having recesses for balls 19 engaging axial grooves 20 in a sleeve 21 connected to a driven member 24, a part-spherical surface 29 on the end of the driving shaft contacting a similar surface on the end of a plug 26 screwed into the sleeve 21 and secured by a lock nut 13. A rubber &c. bush 30 is a friction force fit on the driving shaft 14 and has limited clearance (not shown) with the lower cylindrical surface 25 of the driven member 24, to control and cushion the tilting motion of the coupling.
Patent GB-1072556-A (GB)
Title: Roasting of chromium ores
IPC: C22B1/02
Filed: 1964-07-10
Abstract: A mixture comprising chromite ore, sodium bicarbonate and lime is roasted on a horizontal furnace.  The mixture may also contain sodium carbonate, the amounts of sodium carbonate and bicarbonate preferably being such as to separately contribute at least 25% by weight of the total amount of sodium carbonate and bicarbonate in the mixture.  The total amount of sodium carbonate and bicarbonate preferably is not less than the amount that is stoichiometrically equivalent to the chromium, calculated as chromate, in the ore. The calcium oxide preferably constitutes at least 15%, but less than 40%, by weight of the mixture; the mixture contains, for example, between 0.5 and 1.1 pounds of calcium oxide per pound of ore. The components of the mixture may be so mixed, for example with water, that a preliminary reaction takes place, which reaction may establish a temperature in the mixture of above 200 DEG  F.  A layer of the mixture may be deposited at one point on a horizontal rotary table, heated to roasting temperature while rotating the table, and moved laterally across the table to discharge roasted ore from a point laterally spaced from the point of deposit of the mixture; this roasting process may take place using the apparatus described and illustrated in Specification 1,072,555.  After discharge from the furnace, the roast may be leached with water in a single stage or two-stage extraction to give a solution of sodium chromate; carbon dioxide may react with this solution, for example as described in Specification 882,302, to give sodium dichromate and sodium bicarbonate, which latter after separation from the solution may constitute at least part of the sodium bicarbonate used in the roasting mix.
Patent GB-298686-A (GB)
Title: Improvements in direction indicators for motor vehicles
IPC: B60Q1/36
Filed: 1927-08-06
Abstract: 298,686. Hart, J. I. Aug. 6, 1927. Road-traffic signals on vehicles.-A flexible tube B<1> normally rolled up by a light spring B<2> is extended by pressing a bulb C to expose it by inflating it to indicate a turning movement. The bulb stem C may be rotatably mounted so that the tube B<1> can be extended in different directions, and the tube may normally lie within a casing B carried by the stem.
Patent GB-243003-A (GB)
Title: Device for eliminating natural oscillations arising in electric circuits, chiefly for eliminating the effect of strays in wireless apparatus
IPC: H04B1/10
Filed: 1925-11-12
Abstract: 243,003. Levy, L. Nov. 15, 1924, [Convention date]. Atmospherics and undesired signals, eliminating or limiting; thermionic heterodyne receivers; wave detectors.-A receiver is arranged so that the frequency to which it is tuned is varied continuously at a rate which for telephony is preferably supersonic and for telegraphy may be audible, so that interference produces high frequency currents modulated as to frequency, while the signal-produced currents are modulated as to amplitude. The frame aerial 11, Fig 1 (Cancelled), is tuned by a condenser 12 and has oppositely wound coils 15, 16 in series with it, which are wound on a magnetic core 18, the winding 17 on which is fed by a battery 26 and a generator 19 operating at the frequency of wavelength variation required. The output 21, 22 of the detecting valve 1 is tuned to twice the frequency of the generator 19 and applied to a detecting valve 5. The valve 5 may be the first detecting valve of a superheterodyne receiver, a coil 35 being connected with a local source of high frequency oscillation and a number of frequency stages between that of the incoming waves, and the audio signal may be employed. The circuit 21, 22 may be replaced by a filter. In a modification, Fig. 2, the magnetic modulator is replaced by an oscillating valve 26 coupled by a variable condenser 33 to the input of valve 1 so that the variable resistance formed by the anode-cathode path is in parallel with the coil 15. A number of these circuits may be arranged in cascade. The frequency variation in the receiver may be according to various laws and a rectifier in combination with the generator may be used to produce sudden changes in frequency. The audio-frequency detector 5 may be replaced by a telephone having one winding traversed by the output from the first detection and the other by the local generator 19 or 26. The Specification as open to inspection under Sect. 91 (3) (a) also describes the use of coils 34, 35, Fig. 1 (Cancelled), connected with local high frequency sources for improving the reception by known super-reaction methods. This subject-matter does not appear in the. Specification as accepted. Specification 143,583 is referred to.
Patent GB-715902-A (GB)
Title: Process for isolation and purification of penicillin g
IPC: C07D499/00
Filed: 1951-12-06
Abstract: Penicillin G is isolated from a mixture of various penicillins produced in a fermentation broth, by mixing in solution the mixed penicillins in acid or salt form, with a 2-amino pyrimidine of general formula <FORM:0715902/IV (b)/1> wherein R and R1 designate radicals selected from hydrogen, methyl and methoxy, or a salt of said 2-amino pyrimidine, cooling to form a 2-amino primidine salt of penicillin, which is then converted to an alkali metal salt or alkaline earth metal salt of penicillin G.  Specified 2-amino pyrimidines are 2-amino pyrimidine; 2-amino - 4 - methyl pyrimidine; 2 - amino - 4-methyl - 6 - methoxy pyrimidine; and 2-amino - 4 - 6 - dimethoxy pyrimidine.  Specified penicillin G salts are those of sodium, potassium and calcium.  According to the examples, the solutions are cooled in ice and the formed 2-amino-pyrimidine penicillinate is purified by reprecipitation or recrystallization. The so-formed salt is converted to the sodium, potassium or calcium salt of penicillin G by acidifying a mixture of water and a butyl acetate solution of 2-amino-pyrimidine penicillinate with phosphoric acid at pH 2.4 and treating the butyl acetate phase with (a) aqueous sodium bicarbonate (b) aqueous potassium hydroxide or (c) water and calcium carbonate.  Specification 715,063 is referred to.
Patent GB-207000-A (GB)
Title: Improvements in and relating to dyestuffs
IPC: C09B59/00
Filed: 1922-10-20
Abstract: A black substance is obtained as a by-product in the manufacture of flavanthrone by heating 2-aminoanthraquinone with antimony pentachloride in nitrobenzene; it is isolated, after filtering off the dyestuff, by removing the nitrobenzene by steam distillation, or distillation at ordinary or diminished pressure. A dyestuff dyeing cotton in biscuit-brown shades from the hydrosulphite vat is obtained by treating the above-described black substance, in a finely divided state, with an oxidizing agent, preferably bichromate and sulphuric acid.
Patent GB-279874-A (GB)
Title: Improvements relating to the alternative driving of a machine by two motors
IPC: F04D15/02
Filed: 1927-10-27
Abstract: 279,874. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). Oct. 30, 1926, [Convention date]. Plant.-In machines a driven alternately by steam turbines b and electric motors c contihuously coupled to them, a fall of speed in the turbine due to a falling-off of the electric drive. causes the turbine speed governor f to trip the mechanism which holds closed a spring biassed valve e thus allowing steam to pass through a governor controlled valve d to the turbine, which thereafter drives the turbine at the same speed at which it was driven by the electric-motor.
Patent GB-942181-A (GB)
Title: Cigarettes and cigarette wrappers
Inventor: SMYTH CHARLES NORMAN
IPC: A24D1/02
Filed: 1958-09-05
Abstract: 942,181. Cigarettes. REMBRANDT TOBACCO CORPORATION (OVERSEAS) Ltd. Dec. 7, 1959 [Sept. 5, 1958], No. 28616/58. Heading A2C. [Also in Division B4] A method of forming a paper cigarette wrapper so that it has a controlled permeability to air comprises subjecting parts of the paper to an action which modifies its porosity without producing openings in the paper which are visible to the naked eye and such that the wrapper has, or as it is consumed provides, a progressive increase in air intake area over at least the inner or stub end of its length. A cigarette smokable from either end may have both ends suitably formed. As shown, a part of the wrapper 1 is treated to provide a cellulose ester strip 3 increasing in width towards the stub end and which decomposes on heating and so during smoking destroys the treated paper in advance of the burning tip to provide an increasing air inlet. The strip 3 can increase in width only from about the wrapper midlength, or can extend only along the cigarette butt end. In another embodiment, some five hundred holes of about one thousandth of an inch diameter are formed in the wrapper by sparks (see Division B4) before, during or after cigarette manufacture. Alternatively, the paper porosity may be modified by ultrasonic vibration, electrophoresis, mechanical rolling or grinding, or the rapid evaporation therefrom of liquid air or solid carbon dioxide. In a further embodiment, an over-porous paper, or an over-porous window in a cigarette, is sprayed with kaolin or magnesium trisilicate except where porosity is required. The Provisional Specification refers to air intake into cigars and cigarette holders, to the combination of filter and other cigarette wrapper air intakes with cigarette tips allowing longitudinal air passage therethrough, and to the use of adjustable masking sleeves for air inlets according to the invention.
Patent GB-851492-A (GB)
Title: Improvements in heat exchangers
Inventor: DAVIES FRANCIS VICTOR
IPC: F28F9/18
Filed: 1957-09-11
Abstract: 851,492. Tubular heat exchangers. SUPERHEATER CO. Ltd. Dec. 4, 1958 [Sept. 11, 1957], No. 28706/57. Class 64(3) In a heat exchanger in which a plurality of tubes contained in a shell extend through through a tube plate 6 to headers located externally of the shell, each tube 1 at the point where it passes through the tube plate is provided with a sleeve 10 secured at both ends to' the tube by seal welds 11, 13 and to the tube plate 6 at the sleeve end external to the shell, by a circular seal weld. 12. In the form shown, the sleeve is provided with a recess 15 into which any leakage fluid arising from a fault in the tube joint will pass. and be detected by the provision of a tell-tale aperture 17 located outside the heat exchanger shell. The surfaces of the holes provided in the tube plate to receive the tubes may be formed with sealing grooves (Fig. 2, not shown).
Patent GB-1525449-A (GB)
Title: Cosmetic preparation containing agents for keeping the skin moist
IPC: C11D3/32
Filed: 1977-07-08
Abstract: 1525449 Hydroxyalkane carboxylic acid amides HENKEL KG AUF AKTIEN 8 July 1977 [12 July 1976] 28708/77 Headings C2C [Also in Divisions A5 and C5] Hydroxyalkane carboxylic acid amides of formula wherein R 1  represents H or C 1-4  alkyl, R 2  represents a direct bond or a C 1-3  alkylene radial optionally substituted by one or more alkyl or hydroxyalkyl groups and R 3  and/or R 4  represent, independently of one another, H, C 1-4  alkyl, or an hydroxyalkyl radical having 2 to 6 carbon atoms and 1 to 5 hydroxyl groups, are prepared by known methods.
Patent GB-619236-A (GB)
Title: Improvements in or relating to centrifugal compressors
IPC: F04D29/28
Filed: 1946-09-25
Abstract: 619,236. Centrifugal pumps. CORBITT, R. W., DAVIS, C. A., PLUMB, R. C., and DAVIES, D. O. Sept. 25, 1946, No. 28718. [Class 110 (i)] A rotor for a centrifugal pump has rotor blades 11 and an associated single set of rotating inlet-guide-vanes 12 wherein each rotor blade 11 has a corresponding inlet-guide-vane 12 which is displaced circumferentially from alignment with its associated rotor blade 11. This displacement may be one-third the angular distance between the leading edges of adjacent rotor-blades and in the direction of rotation. The leading edges of rotor blades and the trailing edges of the inlet-guide-vanes may be chamfered to prevent turbulence. Fixed swirlvanes 16 may also be used to enable a total swirl deflection of 90 degrees to be obtained, equal swirl deflection being obtained in each of the three sets of vanes. Specification 568,575 is referred to.
Patent GB-352823-A (GB)
Title: Improvements in and relating to tooth brushes
IPC: A46B11/00
Filed: 1930-09-25
Abstract: 352,823. Reservoir toothbrushes. CHRISTIAN, T., 4534, Riversville Avenue, Chicago, U.S.A. Sept. 25, 1930, No. 28736. [Class 19.] A reservoir toothbrush, which can be carried in the pocket after the manner of a fountain pen, comprises a rotatable body member 18, Fig. III, abutting shouldered ends 17 on the brush carrier and 22 on the cap 20. Both of these members are attached by screw threads to a tubular member 15 carrying a capsule 25 for the tooth paste. A piston 28 for expressing the paste from the capsule has ears 30 for engaging screw threads on the member 18, rotation of which drives the piston along the tubular member 15. The bristles are covered for carriage by a cap 10, Fig. I, which may have a cap 11 for attachment to the pocket.
Patent GB-952349-A (GB)
Title: Improvements relating to thread delivery devices for knitting machines
IPC: D04B15/38
Filed: 1960-08-19
Abstract: 952,349. Knitting-machines. SDRUZENI PODNIKU TEXTILNIHO STROJIRENSTVI. Aug. 19,1960 [Aug. 28,1959], No. 26742/60. Heading D1C. Thread 2 tensioned by a brake 3, before passing into the nip of and around at least a substantial part of the circumference of one or both of delivery rollers 1, 4 which rotate about parallel axes. The roller 4 is driven by the machine, is made of, say, metal and may be roughened, or provided with grooves 5 or longitudinal slots. The roller 1 is covered with a smooth surface rubber or other recilient material and is pressed against roller 4 by its own or an additional weight, or by a spring. Several rollers 1, side by side, may be provided. The brake 3 may be of plate-,reel, clamp-, or ball-type. The device may feed a single thread or a group thereof. The thread passes to the thread guide by way of a slip motion 7 and a guiding rod 6.
Patent GB-1474437-A (GB)
Title: Apparatus for cropping and/or dividing rod delivered from a rolling mill
IPC: B21B39/18
Filed: 1974-07-01
Abstract: 1474437 Flying shears; work finders MORGAN CONSTRUCTION CO 1 July 1974 [2 July 1973] 29007/74 Heading B3W Apparatus for cropping and/or dividing rod &c. emerging from a rolling mill comprises two adjacent shears, one directing the length following the cut upwards and the other directing it downwards, switching means for directing the moving rod selectively to one or other shear and means for receiving rod from the shears. As shown rotary shears 24, 26 and 28, 30 are mounted side by side on common shafts, and rod is directed to the respective shears by a pivoted hollow switch 12 movable between positions 18 and 20, Fig. 1. Cropped lengths are guided by a deflector 48 into a box 57 and lengths to be wound on reels (not shown) reach them via a rotary switch 34 which passes rod selectively through a pipe 70, aligned by means of a pneumatic cylinder 74 with any one of pipes 76, 78, 80, or a pipe 72 provided with three similar pipes (not visible in Fig. 2B). In operation, with the switch 12 in position 18 and the deflector 48 engaging a separator 32, rod is passed between the blades 24, 26 and down a shoot 56, a sensor 86 actuating the shear when a predetermined crop length has passed it. The leading end 90, of the following length, Fig. 7, is deflected upwardly to ride over the separator 32 into passage 66 of the switch 34 and thence to a reel. To divide the rod when a reel is full the separator is swung out of its housing (36), Fig. 5 (not shown), by a pneumatic cylinder (46) and the deflector 48 is lowered by a pneumatic cylinder 52, Fig. 2B, and the switch 34 is rotated to place the empty passage 68 uppermost. The separator is replaced, shear 24, 26 is actuated and the leading end (91) Fig. 11 (not shown) is directed above the separator into the passage 68. To shear the tail crop, the switch 12 is pivoted to position 20 aligned with shear 28, 30, the deflector 48 is raised and the shear is actuated, the leading end (92), Fig. 12 (not shown), of the crop portion (94) being directed to pass below the separator 32 and be guided by the reflector 48 into the scrap box 57. The sensor actuating the shear 28, 30 also actuates rollers 21 to feed the tail crop to the box 57. A pivoted gate 58 directs severed rod portions into a scrap portion or a sampling portion of the box 57.
Patent GB-191874-A (GB)
Title: Improvements in heat economizers for condensing prime movers
IPC: F01K9/00
Filed: 1921-11-01
Abstract: 191,874. Drysdale, W. D., and Dow, A. Nov. 1,1921. Feed-water, heating.-In a condensing reciprocating engine or turbine steam plant, the drainage from the cylinders or stages is led by pipes 12, 11 to a chamber or hot well 7 below the condenser to give up its heat to the condensate therein. The fluid may operate an ejector 13 immersed below the surface of the condensate or leading into the pipe connection between the hot well 7 and pump 8. The resulting liquid is used as boiler feed. In a modification, a chamber is arranged between and connected to two hot wells and two pumps. The drip discharge enters the side of the chamber and produces a vortex flow.
Patent GB-205350-A (GB)
Title: Improvements in ignition apparatus for internal combustion engines
IPC: F02P1/00
Filed: 1922-10-25
Abstract: 205,350. Royce, F. H., and Rolls-Royce, Ltd. Oct. 25, 1922. Condensers. - The casing d<1> is made of thin sheet metal which yields under the pressure of the spring d<2> to make internal connections such as those between tin foil plates and the casing at one end and the insulated terminal or conductor at the other.
Patent GB-1510845-A (GB)
Title: Concentration of ore by flotation
IPC: C09K23/00
Filed: 1975-07-10
Abstract: 1510845 Froth flotation AMERICAN CYANAMID CO 10 July 1975 [1 Aug 1974] 29111/75 Heading B2H A collector for copper ores comprises a mixture of an N-alkyl, O-alkyl thionocarbamate and an alkali metal or ammonium salt of a dialkyldithiophosphate. An aqueous solution of the two components is prepared and then added to the ore. An example describes the flotation of a copper/molybdenum are at a pH of 10.8 using a mixture of methyl isobutyl carbinol and six and eight carbon alcohols as frothing agents.
Patent GB-359669-A (GB)
Title: Device for determining the duration of an x-ray exposure
IPC: H05G1/28
Filed: 1930-09-29
Abstract: 359,669. Measuring R÷ntgen-ray exposures. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Sept. 29, 1930, No. 29131. Convention date, Oct. 5, 1929. [Class 98 (i). A device for recording the duration of X-ray exposures comprises a rotary disc impervious to the rays, which covers a relatively small area of the photographic film ; the disc is driven as by a spring motor and carries a mark pervious to the rays, which forms on the photographic film a series of images each corresponding to a pulsation of the current supplied to the ray-tube. The frequency of pulsation being known, the duration of the exposure may be inferred from the number of images of the moving mark. The device shown comprises a lead disc 1 which has a short radial slot 9 and is mounted on a spindle 2 driven by clockwork 3 enclosed in a casing 6 with an external winding knob and an externallyoperable locking pawl 10 co-operating with a gear wheel 11 on the spindle 2 for starting and stopping the clockwork. The disc 1 is enclosed in a flat box 4 whose base is bent round at 5 to form a clip which serves to secure the device to the X-ray film-holder. When a pulsating radiation, directed, for example, as at 8, strikes the margin of the disc 1 while this is rotating, a series of images of the slot 9 will be formed on the photographic plate, as shown in Fig. 3.
Patent GB-1060801-A (GB)
Title: Process for the manufacture of porous shaped bodies that contain ion exchange synthetic resins
IPC: B01J31/08
Filed: 1963-07-23
Abstract: Porous shaped bodies containing ion-exchange resins made by mixing the ion-exchange resin with a fibrous material, moistening the mixture with a liquid in which the binder used is not soluble, mixing the mixture with a binder and removing the liquid from the shaped material (see Division C3), may be used to catalyse the production of (a) dimethoxymethane from methanol and formaldehyde, (b) acetone from a mixture of acetic acid and isopropenyl acetate, (c) diacetone alcohol from acetone, (d) ethyl acetoacetate from diketene and ethanol and (e) methyl acetate from acetic acid and methanol.ALSO:A porous shaped body containing an ionexchange synthetic resin is made by mixing the ion-exchange resin with a fibrous material, moistening the mixture with a liquid in which the binder used is not soluble, mixing the mixture with a binder and removing the liquid from the shaped material.  The mixture may also contain a filler which can be removed by dissolving it out of the shaped body or which can remain therein.  The fibrous material may be inorganic or organic such as glass, rock wool, slag wool, asbestos, wool, cellulose or a cellulose derivative, vinyl polymer, a polyamide, polyester, polyethylene or polyacrylic fibres and the binder may be polyethylene, an acrylic resin, polystyrene, polyvinyl chloride, acetate or alcohol, polyvinylidene chloride, a polyamide, a cellulose derivative, a phenol-formaldehyde precondensate, an epoxy resin, a polyurethane, a polyester, an aminoplast or a silicone.  The ion-exchange synthetic resin may be a sulphonated styrene-divinyl benzene copolymer, a sulphonated phenol-formaldehyde resin, or other type of ion-exchange resin containing sulphonic acid, carboxylic acid or quaternary ammonium groups.
Patent GB-697724-A (GB)
Title: Improvements relating to the catalytic desulphurisation of petroleum hydrocarbons
IPC: C10G45/28
Filed: 1949-11-16
Abstract: Cracked petroleum naphtha is catalytically desulphurized by passing in vapour form in admixture with hydrogen over an autofining catalyst under conditions of temperature and pressure such that hydrogen is generated by dehydrogenation of naphthenes contained in the feedstock to an extent not substantially in excess of that required to convert organically combined sulphur contained in the feedstock into hydrogen sulphide and to supply the hydrogen requirements in the reaction zone, and recycling the hydrogen as the sole source of hydrogen to the autofining zone. The process may be carried out at a temperature of 650-800 DEG F and a pressure of 25-500 lb./sq. in.  Suitable autofining catalysts are metal sulphides and oxides, for example chromium oxide, tungsten sulphide, nickel sulphide and cobalt molybdate or thiomolybdate; the catalysts may be mixed with a carrier such as bauxite, activated alumina or Kieselguhr.  The preferred catalyst is cobalt molybdate supported on alumina.  Specifications 654,152, 663,038, 669,536, 669,552, 669,553, 697,083, 697,222 and 697,226 are referred to.