baber/WOPTO huggingface dataset:
Patent GB-267634-A (GB)
Title: Apparatus for opening and closing the charging bells of blast furnaces and other bell valves
IPC: C21B7/18
Filed: 1925-12-23
Abstract: 267,634. Morrison, J. A. Dec. 23, 1925. Charging; actuating valves.-Apparatus for operating a blast-furnace charging-bell, applicable also to any kind of bell valve, comprises a cable 36 connected to the bell (through lever 15), a motor - driven hoist member 26 and a yieldable connection between the hoist member and the cable. Loosely mounted on the shaft 27, and one on each side, of the hoist member 26, Fig. 13, are a pair of levers 30 haying their outer ends connected by a pin 31. To the pin 31 are secured ropes 33 guided in grooves on the inner ends of the levers 30 and connected through an equalizer to the cable 36. The pin 31 has a yielding connection, through a spring barrel 40, with the hoist member 26, or an equivalent yielding connection may be introduced between the ropes 33 and the cable 36. In either case, with the bell closed and charged and the hoist member in, say, the position of Fig. 10, the motor on being started runs continuously until, after rotation of the hoist member through about 360‹, the bell has executed a complete cycle of movements, i.e. opened and again closed. Cutting off the motor current and application of an electrically-controlled holding brake is effected by a drum limit switch, but should this fail or an obstruction jam the bell, a second safety switch comes into action. This comprises either a " torque limit relay " in the motor circuit operable in virtue of the increased torque set up by the yieldable connection on overrunning or jamming, or else by a switch such as 72, Fig. 13, actuated directly by the yieldable connection. The motor on being stopped is also reversed ready for the next movement. The motor, torque limit relay and associated electrical circuits are described in detail.
Patent GB-445951-A (GB)
Title: An improved air-supplying and ash-receiving device for stoves
IPC: F24B1/19
Filed: 1934-11-12
Abstract: 445,951. Stoves. WITHERDEN, H. B., Wytherdene, Woodmere Avenue, Shirley, Croydon. Nov. 12, 1934, No. 32510. [Class 126] An air-supplying and ash-receiving unit comprises a metal box 11 formed near the upper end of a side wall with an opening from which extends a metal air-supply pipe 12, and a removable ash-box 20 which fits freely within the box 11, is supported by a flange round its upper end and is formed with a side opening aligned with the air-pipe. To facilitate removal of the ash-box the box 11 is bowed outwardly and rearwardly as shown, or, for the same purpose, the box 11 may as a whole be inclined downwardly and rearwardly. The pipe 12 is fitted with a control valve, and may extend laterally or rearwardly instead of forwardly. A flame-preventing gauze 25 may be fitted.
Patent GB-501087-A (GB)
Title: A process for separating sulphuric acid from mixtures of sulphuric acid and sulphuric acid esters
IPC: C07C305/00
Filed: 1937-11-25
Abstract: 501,087. Sulphuric acid esters. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. Nov. 25, 1937, No. 32546. Convention date, Dec. 24, 1936. [Class 2 (iii)] Sulphation products comprising mixtures of sulphuric acid and sulphuric acid esters are freed from the sulphuric acid by washing them with water in the presence of organic compounds containing only carbon, hydrogen and oxygen and having from 5 to 15 carbon atoms in the molecule. The sulphation products may be derived from unsaturated hydrocarbons, alcohols or unsaturated carboxylic acids. Specified solvents are hexyl, heptyl, decyl, benzyl and terpene alcohols and aliphatic ketones such as methyl hexyl ketone and methylheptylketone. These solvents may be used in admixture with other solvents for example those having less than 5 carbon atoms such as methylethylketone. In an example, secondary heptyl alcohol is added to a reaction mixture obtained by treating a distillate of cracked paraffin wax with sulphuric acid of 90 per cent concentration and excess sulphuric acid is removed by washing five times with water. Neutralization may be effected with alkali hydroxide in the presence of the solvent which facilitates the hydrolysis of the normal dialkyl sulphates. After diluting with water, the unattacked olefines and the solvent are extracted with a solvent such as benzine. The remaining aqueous solution may be evaporated to give the pure alkali alkylsulphate. In a further example, before washing in the presence of heptyl alcohol most of the acid is removed by means of water. The dialkylsulphates and the polymers may also be removed by extraction with benzine before the washing process with water in the presence of the oxygen containing solvents to remove the excess sulphuric acid. The process may be effected continuously. The reaction mixture together with the solvent may be passed in countercurrent with water, or the reaction mixture may be introduced into an extraction column and water passed into the top thereof. A sulphuric acid solution may then be drawn off at the top and a sulphuric acid free mixture of solvent and alkyl sulphuric esters withdrawn from the bottom.
Patent GB-474706-A (GB)
Title: Improvements relating to glass-to-metal seals
IPC: H01J5/26
Filed: 1936-11-27
Abstract: 474,706. Uniting metal to vitreous material by heat. STANDARD TELEPHONES & CABLES, Ltd. Nov. 27, 1936, No. 32553. Convention date, Feb. 4. [Class 36] A method of forming a glass to metal seal, in the manufacture of an envelope for an electron discharge comprises placing a metallic disc 14, Fig. 1, between a pair of hollow glass members 10, 12 having openings with edges opposite each other and in contact with the disc, and generating heat in the metallic disc by high frequency induction to fuse the glass members to it. The example shows an electron-discharge tube with an exhausting tube 11 sealed to the portion 10, and electrode supports or leading-in conductors 13 sealed in apertures in the end portion 12 prior to the sealing together of the members 10, 12, 14. In a modification, the disc 14, Fig. 3, is provided with integral sockets 18 to receive vitreous beads 19 fused to the rods or wires 13, the disc 14 then being seated upon the open end of the member 10 and an auxiliary or backing ring 20 of vitreous material seated upon the disc 14 with its lower edge in juxtaposition to the edge of the member 10. The disc 14 is subsequently heated by high frequency induction to fuse the members 10, 20 to the disc 14 and also fuse the beads 19 within the sockets 18. Alternatively the upper vitreous ring 20 may be dispensed with, the metal disc then preferably being of an alloy of iron, nickel, and cobalt having substantially the same coefficient of expansion as the glass which is fused thereto.
Patent GB-675275-A (GB)
Title: Improvements in or relating to crutches
IPC: A61H3/02
Filed: 1948-12-16
Abstract: 675,275. Crutches. DAVIES, R. G. March 16, 1950 [Dec. 16, 1948], No. 32575/48. Class 81 (ii). The lower part of a crutch is bent or cranked rearwardly in relation to the axis of the crutch. In the lefthand crutch shown, the greater part of its length is straight but the lower part 3b is bent backwards at a small angle. The foot 4 may be of arcuate form in the plane perpendicular to the direction of motion and the upper rest 5 is preferably of U-shape with the rear limb longer and broader than the front limb, both limbs being padded. Alternatively the two limbs may be resilient and adjustable. The tubular member 2 carrying the hand grip 2a may be adjustable for height on the crutch stick or the stick may be divided with the lower section secured to the hand grip member and the upper section telescopically slidable in it, so as to provide a crutch of adjustable length. If desired the crutch may be bowed outwardly at the point 3a and a foot rest 4b may be attached to the foot member.
Patent GB-318426-A (GB)
Title: Improved construction of ship log
IPC: G01P1/00
Filed: 1928-11-08
Abstract: 318,426. Walker & Son, Ltd., T., and Walker, J. Nov. 8, 1928. Logs. - In a log particularly intended for fixing on the taffrail &c., the reduction gearing is housed independently of the indicator movement and dial in disconnectible association therewith within a casing constituting a watertight enclosure wherein the reduction gearing runs in oil and the indicator movement and dial are in a separate compartment to which the oil has no access. The taffrail log shown comprises a cylindrical casing 1 formed with a flange 3 to which is secured the housing 4 containing the indicator movement 10, pointers 7, 8 and dial 9 which are carried on a base plate 11 forming an oiltight partition between the chambers 1, 4. The spindle 15 driven from the log rotator is carried in anti-friction bearings 17 mounted in a cage 18 forming an extension of an end-piece 19 screwed into the casing 1. The reduction gearing 20 interposed between the spindles 15 and the indicator is carried by a plate 21 integral with a threaded boss 22 engaging in a ring 23 attached to a gland 25 screwing into the internallythreaded end of the cage 18. The end 26 of the spindle 15 is bifurcated to engage a flattened spigot 27 on the first spindle of the gearing 20 and the last spindle 28 of the gearing is bifurcated to engage the spigot 14 projecting from the indicator. By unscrewing the cap 19 the spindle 15 and reduction gearing can readily be removed from the casing, leaving the indicator movement &c. in position. The chamber 29 containing the gearing 20 is adapted to be filled with lubricant which is prevented by the base plate 11 from entering the housing 4.
Patent GB-1437441-A (GB)
Title: Surface treatment of tinplate
IPC: C25D11/38
Filed: 1973-07-09
Abstract: 1437441 Electrolytic chromate treatment of tin plated steel KAWASAKI STEEL CORP 9 July 1973 32640/73 Heading C7B Tin plated steel is (a) electrolytically chromate treated by contacting it as cathode with a solution containing hexavalent chromium ions and (b) thereafter heated to a temperature which is greater than the melting point of tin (i.e. 232‹C) and not greater than 400 C. Specified conditions are an aqueous solution of Na 2 Cr 2 O 7  at pH 3.0 to 5.0 and at room temperature to 70‹C, a current density of 0.1 to 10A/dm<SP>2</SP> and a treating time of 0.1 to 3 seconds. The heating may be at 280‹C to 350‹C by resistance heating with an electric current being fed through the tin plated steel. The method may include a further step of contacting the treated steel as cathode with a solution containing hexavalent chromium ions.
Patent GB-268056-A (GB)
Title: Improvements in or relating to the assembling mechanism of typographical composing machines
IPC: B41B11/18
Filed: 1925-12-29
Abstract: 268,056. Linotype & Machinery, Ltd., and Gayter, E. Dec. 29, 1925. Magazines and driving-Mechanism for type-barmaking machines. - Relates to power-operated n,echanism controlled by a finger-key for adjusting a matrix guideway between different magazines and the assembling-mechanism. The mechanism comprises a sprocket-wheel 1 rotating continuously on a boss 5, to which it can be coupled by clutch-mechanism controlled by a key, a cam 10 secured to the boss 5 acting through a lever 31 and link 32 to shift the guide. way. The boss, 5 is loose on a shaft 6, and contains a semi-cylindrical groove 7, which is filled by a half-round portion of a short rock-shaft 8. A spring 12, bearing on an arm 11, tends to rotate the shaft, so that the half-round portion projects into one of a series of recesses 9 in the hub of the sprocket-wheel 1, thereby locking the boss 5 to the sprocket-wheel. The action of the spring 12 is normally prevented by one of two sliding abutments 14, which engage the arm 11, the abutments being withdrawn by levers 17' under the action of the finger-key. After a halfrotation, the boss 5 is disconnected from the sprocket-wheel by the other of the abutments 14, which has returned into the path of the arm 11. Two independent cams 10 may be employed in the case of a machine having main and auxiliary magazines. The sprocket-wheel 1 is driven from the intermediate shaft 4 through a friction-clutch.
Patent GB-154471-A (GB)
Title: Improved method for electrolysing a solution of nickel salt
IPC: C25C1/08
Filed: 1919-08-03
Abstract: 154,471. Heberlein, C. Aug. 8, 1919. Nickel, obtaining; electrolytes, circulating; diaphragms.-In a cyclic process, nickel is dissolved from ore, matte, or the like to form a solution having an optimum acidity for deposition, i.e. a percentage of free acid between 0.1 and 0.4. The solution is passed in series through the cathode compartments of a number of vats, while a nickel salt solution is passed in series through the anode compartments, the diminution of acidity of the catholyte through electrolysis being compensated for by partial transfusion of the anolyte, which increases in acidity in successive vats. When the acidity of the anolyte has become incompatible with the maintenance of the catholyte acidity below 0.4 per cent, the anolyte is withdrawn and, without concentration, is used for preparing fresh solution to be added to the circulating catholyte. The anolyte may be replenished from the fresh solution or from the catholyte. Each vat preferably contains a number of alternating cathode compartments and insoluble anodes within a single anode compartment, as described in Specification 141,766, electrolyte being fed in parallel through the cathode compartments of each vat but in series through those of different vats. Diaphragms of clay, wood, or paper, or of framed asbestos millboard which mav be treated with water-glass, are suitable. The catholyte may be at a higher level than the anolyte, so as partly to percolate through the diaphragms. The current density may be 10 amperes per sq. ft.
Patent GB-1199674-A (GB)
Title: Improvements in or relating to Turbine-Type Dental Handpieces
IPC: A61C1/05
Filed: 1968-07-10
Abstract: 1,199,674. Dental handpieces. KALTENEACH & VOIGT. 10 July, 1968 [13 July, 1967], No. 32973/68. Heading A5R. [Also in Division F1] A dental handpiece comprises an air turbine having a rotor 12 fixed to a shaft 11, and a bearing 9 supporting one end of the shaft, said bearing being provided with frusto-conical bearing surfaces 5, 6 formed on inner and outer ring members 15, 16 respectively. The bearing surfaces are lubricated by compressed air supplied through radial bores and' axial movement of the inner ring 15 caused by the air pressure is resisted by a spring 32. The spring is located between an abutment 15b on the ring 15 and one end of an axially adjustable clamping ring 30. The size of the bearing air gap may be altered by adjusting the ring 30 which is provided with a convex exterior surface in vertical cross-section. Air is supplied to the rotor via a conduit 27a and lubricating air is supplied through a passage 25, the ring 15 being entrained as the shaft 11 rotates. A similar bearing 10 supports the shaft on the other side of the rotor. A dental tool 13 is mounted in a bore in the shaft 11.
Patent GB-466710-A (GB)
Title: Improvements in colour photography
IPC: G03C7/26
Filed: 1935-11-28
Abstract: 466,710. Colour photography. TRU COLOUR FILM, Ltd. Nov. 28, 1935, No. 33007. Convention date, Dec. 13, 1934. [Class 98 (ii)] The photographic silver image of a colour record print is dye-toned with dye in association with a thio-amino compound, such as thiocarbamide, thiosinamine, cystein, or thioacetamide, whereby the image is brought to a condition such that colour can be transferred therefrom to a separate surface by contact with the latter. The colour record prints may be made on sensitized paper or celluloid either from a multicolour - screen or other coloured negative or from two colour component negatives, one recording the violet to yellow part of the spectrum and the other the red to green part. The print from the red component negative is iron-toned blue, while the. print from the violet component negative is bleached in a cupric chloride acetic acid bath and dye-toned red-yellow in a bath containing acid fuchsin, tartrazine, and thiocarbamide and then washed. Alternatively the bleached image may be treated first in a thiocarbamide bath and then in a dye bath with or without thiocarbamide. The blue-toned print is immersed in a transfer bath of potassium bromide containing nitric acid. The red-yellow print is registered therewith and the two prints are squeezed together with or without heat. The transfer may be effected prior to toning the blue print. The print from the red component negative may be dye-toned blue in a bath containing Patent Blue L and thiocarbamide, and colour transferred from both prints on to a surface previously treated in either an acetic acid or an acetic acid and thiocarbamide or a chrome alum bath, with or without potassium bromide. The general dyestain produced may be locally revived by dilute acid for retouching purposes. The yellow parts may be brightened with dilute ammonia, sodium carbonate, or soluble sulphite, or lightened by chlorine. The prints may be fixed in hypo before or after transference. Three colour component prints may be made, and colour successively transferred from the red and the yellow dye-toned prints to the blue iron-toned print, or all may be dye-toned and colour transferred to a separate surface. The prints may be stretched, shrunk to permit of registration by immersion in a softening or hardening bath or hot or cold water. A grey key image may be produced by partial re-development of the iron-toned print in acid amidol. The final prints may be made on to a base having emulsion on one or both sides, or separate transparent bases finally combined in register may be used. The water employed should have a pH value of 6. Specification 400,251 is referred to.
Patent GB-387455-A (GB)
Title: Improvements in or relating to electrical condensers and methods of constructing them
IPC: H01G5/38
Filed: 1931-11-28
Abstract: 387,455. Condensers. PLESSEY CO., Ltd., HEYNE, W. O., Vicarage Lane, Ilford, and PACKMAN, P. J., 129, Pembroke Road, Seven Kings, both in Essex. Nov. 28, 1931, No. 33028. [Class 38 (ii).] A method of constructing a variable condenser consists in building a condenser to have an estimated value greater than the prescribed value, testing the capacity with one set of vanes in each of a plurality of different positions relative to the other set and removing portions of, for example by forming notches in, at least one vane to reduce the capacity to the prescribed value in each of the different positions. In the example shown a variable condenser 13, having three ganged sets of vanes, is mounted on a carrier, having endplates 14 and cross rods 15, running on guides 11 on a baseplate 10. The capacity of each of the sections is measured in certain positions of the rotor, determined by a spring-held roller 43 engaging in notches in a disc 41 secured to the shaft, a slotted die 19 is advanced, by means of a screw wheel 33, so that the divisions enter the spaces between the vanes and a punch 20 is moved laterally by means of a rack 22 and pinion 23 so as to form notches or apertures in the vanes, to reduce the capacity to the amount desired, which may be that of another or standard section, or, in the case of condensers for use in a super-heterodyne receiver, to correct one set according to one law while another set on the same shaft is corrected to another law. A punch slotted as in the case of the die so as to operate on all the vanes may be used or material may be removed from one or any of the vanes in any of the positions.
Patent GB-663163-A (GB)
Title: Improvements in and relating to screws and screw-drivers
IPC: B25B15/00
Filed: 1947-12-15
Abstract: 663,163. Screwdrivers. GUEST, KEEN & NETTLEFOLDS (MIDLANDS), Ltd. Dec. 15, 1947 [Dec. 30, 1942], No. 33059/47. Class 61 (iii) [Also in Group XXV] Relates to screwdrivers for wood or machine screws of the type in which the heads have a central tapered recess for wedging engagement with a driver, and laterally extending slots to engage torque transmitting wings thereon, and consists in providing the wings 33 of the bit with clearance from the sides 18 and ends 19 of the grooves 14, of about 0-001 inch, before the torque is applied. The side walls 18 of the grooves 14 converge outwardly at an angle of from two to four degrees as defined by their intersections 25 with a plane perpendicular to the axis. The walls 18 also converge downwards from the surface of the head so as to include an angle of from eight to ten degrees as measured in a plane at right angles to the centre plane of the groove and parallel to the axis. The walls 22 defining the ribs between the groove converge downwards at a small angle such that the bit 35 will wedge between them without bottoming so that the screw may be introduced by the bit into holes difficult of access. Specifications 427,892 and 427,893, [Group XXV], are referred to.
Patent GB-786463-A (GB)
Title: Independent wheel suspension in motor vehicles
IPC: B60G3/01
Filed: 1955-11-18
Abstract: 786.463. Spring suspensions; axle arrangements: guiding vehicle axle-movement. FUCHS, R. E. [trading as FUCHS. P. ENSTE NAXOSCHMIRGELFABRIK DEUTSCHLANDS]. Nov. 18, 1955 [Nov. 29, 1954], No. 33091/55. Class 108(2) Relates to an independent rear wheel suspension for motor vehicles wherein a selfsupporting stub .axle 6 is attached to a spring bearing housing 5 which is guided so as to be able to move up and down on vertical guide rods. According to the invention, two guide rods 3, 4 are non- rotatably connected at the top and bottom to a retaining means 1 connected directly to the vehicle chassis and the springing of the bearing housing 5 is interposed independently of the guide rods between the retaining means 1 and the bearing housing and the bearing housing is guided on the guide rods by ball bearing means in the bearing housing. As shown the guide rods 3, 4 and a lining within the housing 5 are provided with grooves 8 which serve as tracks for the ball bearings retained within the housing 5 by end caps 9. The housing may be sprung against the retaining means by torsion bars, leaf, coil or rubber springs.
Patent GB-1517184-A (GB)
Title: Extraction of charge gases from a coke-oven
IPC: C10B25/16
Filed: 1975-08-08
Abstract: 1517184 Treating coke oven gases H HOLTER 8 Aug 1975 [21 Aug 1974 17 Oct 1974 23 April 1975] 33107/75 Heading B1W [Also in Division F4]  Apparatus A for treating gases resulting from the charging of a coke oven battery C comprises serially arranged extraction, combustion and washing means carried by a truck B movable lengthwise along one side of the coke-oven battery C. In use one end of an extraction duct 10 is adapted to be connected to the gas of take pipe 11 of a respective oven being charged, the other end of said duct 10 being connected to the inlet pipe 9 of a combustion chamber 2, in such a manner as to allow telescoping and pivotable movement therebetween. The combustion chamber 2 is provided with a thick ceramic lining 8 acting as a heat store and remaining sufficiently hot during the intervals between two successive charging operations as to ensure ignition of the gases discharged from the coke oven. The chamber 2 additionally includes a burner 3 supplied with gas from a tank 5 and means 7 for supplying air to ensure complete combustion. The end of conduit 10 is provided with a device 13, whereby a cover 12 on the offtake pipe 11 may be opened or closed by appropriate movement of the conduit 10 relative to the pipe 11. The burned gas leaving the combustion chamber 2 is cooled in a conduit 14 by spraying with water, the thus cooled gas being led into a preliminary sedimentation separator 17. Partially cleaned gas leaving separator 17 is then passed through a main washer 21 and a further separator 22 before being discharged via a suction fan 27. The extractor conduit 10 is provided with a branch conduit 10a to collect gases emerging through the adjacent coke oven door. The truck B carries machinery such as levelling or coke pushing equipment in addition to the gas treatment apparatus A.