baber/WOPTO huggingface dataset:
Patent GB-190847-A (GB)
Title: Improvements in the method of electrically welding high-speed steel to tool shanks or bodies
IPC: B23K31/02
Filed: 1921-10-22
Abstract: 190,847. Schr÷der, E. Oct. 22, 1921. Lathe and like tools.-Relates to resistance-welding a piece of high-speed steel to a low-grade body and consists in interposing an auxiliary conductor between the high-speed metal and one of the electrodes with the object of rendering the temperature between the auxiliary conductor and the high-speed metal lower than that obtaining between the welding surfaces of the high-speed metal and the lowgrade body. The auxiliary conductors may be of enlarged cross-sectional area as shown at L, Fig. 1, or the welding area may be made smaller than that between the auxiliary conductor and the high-speed metal by tapering either the latter, Fig. 8, or the low-grade body, Fig. 9. Roller electrodes in conjunction with auxiliary conductors may be used for welding strips of high-speed metal to low-grade bodies. The auxiliary conductor mav take the form of a second low-grade body, the high-speed metal then uniting two endportions. The process may be applied to weld, through an intermediate high-speed steel piece, a low-grade body and a high-speed steel tip which do not easily unite in direct contact.
Patent GB-670765-A (GB)
Title: Improvements in or relating to electrical oscillation generators
IPC: H03L7/04
Filed: 1949-11-02
Abstract: 670,765. Automatic frequency control systems. GENERAL ELECTRIC CO., Ltd., and WATKINS, T. B. Oct. 31, 1950 [Nov. 2, 1949], No. 28118/49. Class 38 (iv). An automatic frequency control system for a main generator 1 of very high frequency (e.g. 4500 mc/s.) comprises means for mixing its output with that of a second oscillator 2 of lower frequency (e.g. 30 mc/s.), frequencymodulated at 6 by a still lower auxiliary frequency source 7 (e.g. 100 kc/s.). The output from the mixer 3 is fed through a band-pass filter or cavity resonator 5, tuned to the difference or sum frequency (e.g. 4470 mc/s.), to a detector 4 giving a low-frequency output (e.g. 100 kc/s.) which is compared in phase at 9 with the output of the source 7 of the frequency modulation. The output from the phase comparer 9 is applied to the reactance valve 6 or other frequency-controlling device associated with the second oscillator 2, with the result that the mixer output is brought into frequency agreement with the resonance frequency of the cavity or filter 5. The output of the oscillator 2 is fed to a frequency discriminator 18 centred, for example, on 30 mc/s.; and the detected error is fed as a direct voltage to adjust at 20 the voltages on the electrodes of the main oscillator 1, which may be a velocity-modulated tube, and thus to control its frequency. At the initial setting-up of the system, the output of the mixer 3 may be brought within the operating range of the resonator 5 by giving a frequency sweep to the oscillator 2 by a saw-tooth voltage applied to the reactance valve 6 from the source 21, the discriminator 18 being disconnected at the switch 23. As soon as the detector 4 gives an output, a switching means 22 is rendered operative to disconnect the source 21 at the switch 24 and to connect up the discriminator 18 at the switch 23. In a modified circuit, the output of the phase comparer 9 controls the main oscillator 1, and the output from the frequency discriminator 18 controls the second oscillator 2.
Patent GB-869184-A (GB)
Title: Process for the preparation of liquid curable synthetic resins
IPC: C08G12/00
Filed: 1958-09-02
Abstract: Liquid curable synthetic resins are produced by condensing together in aqueous alkaline medium, an aminotriazine, an aliphatic or cycloaliphatic ketone and an aldehyde.  Suitable aminotriazines are melamine, benzoguanamine, acetoguanamine and thioammeline ethyl ether.  Suitable ketones are acetone, methyl ethyl ketone and cyclohexanone.  Optional additional ingredients are urea, dicyandiamide, urethanes, phenols, phenoplasts, aminoplasts, or polymerization plastics.  The products are water-soluble, stable during storage and rapidly hardenable at relatively low temperatures. They are useful for making moulded articles, hard paper, wood slabs, grinding bodies and lacquers. In Examples (1) melamine, acetone, aqueous formaldehyde and caustic soda are refluxed together, and the product employed to impregnate paper which after drying at 120 DEG C. may be pressed if desired after acidification to form homogeneous, water-resistant plates; (2) Melamine, methyl ethyl ketone, aqueous formaldehyde and sodium carbonate are refluxed together.  The liquid product is mixed with rubber latex and used to bind corundum grains.
Patent GB-622641-A (GB)
Title: A compartmented device for arranging and storing sheet-form articles
IPC: B42F17/00
Filed: 1945-10-25
Abstract: 622,641. Card, ticket &c., racks. BLIGHT, H. R. BONE, L. C., GUNN, M. N., and McAFEE, W. Oct. 25, 1945, No. 28240. [Class 146 (i)]  In a compartmented device for storing sheet form articles such as cards, tickets, pamphlets 13, wherein each compartment comprises two main walls 11 and a subsidiary wall 12 at an angle to the main walls 11 which are at an angle to the horizontal so that the cards 13 slide downwards and rest on one wall 11 with their edges against the wall 12 so that their top edges are splayed or stepped, a plurality of sets .or series of compartments are supported in parallel relationship to each other in troughs of substantially rectangular cross section formed or supported one above and slightly behind the other within a rigid frame or a supporting structure 28. The troughs are formed by U-shaped shelves 27 secured within a tray 31 which is supported in the structure 28 at an angle with the base sloping rearwardly and upwardly from its lower longitudinal edge. The walls 11 of the compartment members may be soldered to the shelves 27 and top and bottom plates 30, 27a of the tray 31.  In a modification, the compartment members extend the whole width of the tray and through slots in the top and bottom walls 30, 27a where they are secured, the shelves 27 having oblique slots through which the compartment members pass. An index frame 29 for index strips may be attached to each shelf 27.
Patent GB-838390-A (GB)
Title: Improvements in and relating to nuclear reactors and their operation
Inventor: GARNER PHILIP JAMES
IPC: G21C5/12
Filed: 1958-09-03
Abstract: 838,390. Nuclear reactors. SHELL RESEARCH Ltd. Sept. 3, 1958, No. 28314/58. Class 39(4). In a nuclear reactor the coolant and moderator is an aromatic hydrocarbon operated above the critical values of temperature and pressure in the vapour phase at temperatures above 700‹ F and pressures above 50 atmospheres. Examples of the hydrocarbons used are benzene, toluene, ethyl benzene, propyl benzene, isopropyl benzene and suitable mixtures of aromatic hydrocarbons are derived from the refining of petroleum products.
Patent GB-451392-A (GB)
Title: Improvements in and relating to side buffers for motor and like vehicles
IPC: B60R19/16
Filed: 1935-10-15
Abstract: 451,392. Mudguards. PANZETTA, H., 27, Bucks Avenue, Watford, Hertfordshire. Oct. 15, 1935, No. 28482. [Class 136 (i)] [See also Group XXXII] A resilient side buffer for a vehicle comprises an annulus of indiarubber rotatably mounted on a vertical bearing adapted to be secured, for example, at the extremity of a bumper or on a mudguard in order to prevent the bodywork of other vehicles with which it may come into contact from being damaged. The Figure shows a buffer 4 mounted on a bolt 38 held between arms 40, 41 secured to a mudguard bracket 36, the buffer projecting through a slot 39 in the valance 37. A reinforcing plate may be moulded into the buffer which may have peripheral corrugations or circumferential ribs. When the buffer is rotated a visible or audible warning may be transmitted to the driver.
Patent GB-326160-A (GB)
Title: Improvements in or relating to web-winding machines
IPC: B65H19/30
Filed: 1928-10-04
Abstract: 326,160. Marks, Sir G. C., (Cameron Machine Co.). Oct. 4, 1928. Winding webs. - In a web-winding machine provided with means for ejecting the wound roll, controlling devices are provided to prevent the actuation of the winding means and ejecting means simultaneously. In one form, Fig. 1, the winding-drums A<1>, A<2> are driven by an electric motor 1 supplied from a generator 2, the circuit of which includes a solenoid 6, the armature 4 of a second solenoid 5, and a switch 3. The roll-ejecting means 7 is operated by a motor 10 driven by a generator 12 in circuit with the solenoid 5, the armature 14 of the solenoid 6, and a switch 13. When either switch 3 or 13 is closed, the current through the circuit keeps the circuit of the other generator open through the armature of the correspondingly exciter solenoid. In a further form, Fig. 6, in which the winding- drums are driven mechanically and the rollejecting device electrically, the switch 13 for operating the motor 10 of the roll-ejecting device 7 is closed by the depression of a hand-lever 32, and the closing of a clutch 36 for connecting the winding-drums A<2> to the driving pulley 35 is effected by moving a hand-lever 29 to the left. Projections 30, 33 are provided on the levers 29, 32 which prevent the movement of either lever to the on " position unless the other lever is in the " off position.' Specifications 269,860, 270,254, and 306,599 are referred to.
Patent GB-926478-A (GB)
Title: Ion exchange materials and methods of forming
IPC: C08F291/00
Filed: 1959-05-26
Abstract: Ion-exchange materials are made by swelling an inert, solid, water-insoluble film-forming homopolymer, other than a polyalkylene, with a liquid ethylenically unsaturated monomer, polymerizing the monomer to form an active polymer by heating it, said monomer or polymerized monomer having or being provided with ion-exchange or chelation groups selected from carboxylic, carboxylate, sulphonic, sulphonate, sulphonium, primary, secondary and tertiary amine, quaternary ammonium, phosphoric, phosphonium and thiol, and salts of these groups. Polymers specified are polyhaloethylenes, polymers of acrylonitrile, butadiene, vinyl ethers and alkyl acrylates and methacrylates, polyamides, polyesters and natural and synthetic rubbers. Monomers specified are styrene, alkyl-, haloalkyl-, and halo-styrenes and other unsaturated aromatic compounds, vinyl pyridine, piperidine, butidine, carbazole and sulphones, acrylic and methacrylic acids and N,N-dialkylaminoalkyl methacrylates.  Also present in the monomeric material may be polyunsaturated cross-linking agents, e.g. divinyl aryls, diolefines, glycol dimethacrylate diolefines and polyallyl esters. Free radical sites may be developed upon the preformed polymer by the use of irradiation, e.g. ultra-violet light, X-rays and alpha-, betaand gamma-rays; catalysts, e.g. peroxides, hydroperoxides, persalts and azo-compounds; and by mechanical treatment, e.g. mastication. The initial polymer may be in the form of a sheet or particles.  After the polymerization step ion exchange groups, if not already present, are introduced by appropriate after-treatment, e.g. sulphonation, or chlormethylation followed by amination.  In the example a sheet of polyvinyl chloride is swollen by styrene containing benzoyl peroxide and heated to 65 DEG C.  The resulting sheet is treated with chlorosulphonic acid to provide a cation-exchange membrane.
Patent GB-459733-A (GB)
Title: Improvements in and relating to vulcanization of rubber
IPC: C08K5/00
Filed: 1935-10-16
Abstract: The vulcanization of rubber is accelerated by the addition to the mix of benzoyl methyl di(aryl thiazole 1-sulphides) of the general formula <FORM:0459733/IV/1> where AR is a substituted or unsubstituted ortho arylene radical. Substituents mentioned are hydrogen, nitro, hydroxy, methoxy, methyl and chloro, while other halogen, alkoxy and alkyl radicals may also be used.  The compounds are prepared by bringing together in a suitable medium a dihalogen acetophenone and a salt of a mercapto aryl thiazole, with or without the application of heat.  Solvents mentioned are water, benzene and alcohol.  A list of suitable mercapto aryl thiazoles is given of which 1-mercapto-4-chlor benzothiazole, 1-mercapto-4-nitro-benzothiazole and 1-mercapto-5-ethoxy-benzothiazole are typical.  The compounds of the invention may be employed either alone or in conjunction with activators such as diphenylguanidine and its ncid oxalate, di - ortho - tolyl guanidine and its neutral succinate, butyl ammonium oleate, cyclohexyl ammonium fumarate, dicyclohexyl ethylene diamine and the high boiling ethylene polyamines.  In an example, an acetone solution of dichloroacetophenone is added to an aqueous solution of the sodium salt of mercaptobenzo thiazole to give benzoyl methyl-di(benzothiazyl-1-sulphide). Specifications 349,461, 360,491, and 361,917 are referred to.ALSO:The vulcanization of rubber is accelerated by the addition to the mix of benzoyl methyl di(aryl thiazole 1-sulphides) of the general formula <FORM:0459733/V/1> where AR is a substituted or unsubstituted ortho arylene radical. Substituents mentioned are hydrogen, nitro, hydroxy, methoxy, methyl and chloro, while other halogen, alkoxy and alkyl radicals may also be used.  The compounds are prepared by bringing together in a suitable medium a dihalogen acetophenone and a salt of a mercaptoartylthiazole, with or without the application of heat. Solvents mentioned are water, benzene and alcohol.  A list of suitable mercapto aryl thiazoles is given of which 1-mercapto-4-chlor-benzothiazole, 1 - mercapto - 4 - nitro - benzothiazole and 1-mercapto-5-ethoxy-benzothiazole are typical. The compounds of the invention may be employed either alone or in conjunction with activators such as diphenylguanidine and its acid oxalate, di-ortho-tolyl guanidine and its neutral succinate, butyl ammonium oleate, cyclohexyl ammonium fumarate dicyclohexyl ethylene diamine and the high boiling ethylene poly amines.  In an example an acetone solution of dichloroacetophenone is added to an aqueous solution of the sodium salt of mercaptobenzothiazole to give benzoyl methyl di(benzothiazyl 1-sulphide.)  Specifications 349,461, 360,491, and 361,917 are referred to.
Patent GB-661153-A (GB)
Title: Improvements in and relating to the electrolytic deposition of rhenium
IPC: C25D5/50
Filed: 1949-11-09
Abstract: 661,153. Electrodeposition of rhenium. PHILIPS ELECTRICAL, Ltd. Nov. 9, 1949 [Nov. 12, 1948], No. 28727/49. Drawings to Specifications. Class 41. A method of electrodepositing rhenium consists in applying it on very thin layers which in each case are annealed before the application of a subsequent layer so that the rhenium passes from the amorphous state to the crystalline state. The annealing may take place at a  temperature above 1000 C. in a reducing atmosphere. The rhenium may be deposited on a base of tungsten, molybdenum, platinum, rhodium, chromium or nickel. The electrolyte may contain sulphuric acid with a solution of perrhenic acid or potassium perrhenate, or a solution of potassium perrhenate, phosphone acid and acid sodium phosphate.
Patent GB-1241412-A (GB)
Title: Improvements in apparatus for causing contact between two fluids of different densities
Inventor: YHLAND CARL HELGE
IPC: B01F3/04
Filed: 1967-06-22
Abstract: 1,241,412. Gas/liquid and liquid/liquid contact apparatus. SVENSKA ROTOR MASKINER A.B. 20 June, 1968 [22 June, 1967], No. 28811/67. Headings B1F and B1R. The invention relates to apparatus for contacting two fluids of different densities e.g. gas/liquid or liquid/liquid contact. In the embodiment of Fig. 1, liquid from stationary pipes 38 is sprayed into plates 34 which are rotating about shaft 22 and is spread as a thin film along the plates 34 by centrifugal force and contacts gas mixture from port 18 flowing through perforations 36. The liquid may be a solvent for one of the components of the gas mixtures. Gas must flow through annular port 22 to outlet port 32 because of seal 48 acting on annular plate 28. Liquid leaves at 50. In the embodiment of Fig. 3, liquid from the stage above after flowing down partition 52 and across annular gap 64 via channels 66, Fig. 4, is flung out onto plates 34 from bowl 54 by centrifugal force. Some of the liquid passes via perforations 60. Members 58 are frustoconical. Gas passes upwards from stage to stage between members 34 and through annular gap 64. The liquid may be a solvent for dissolving a gas from a gas mixture.
Patent GB-720550-A (GB)
Title: Improvements in or relating to ionisation tubes
IPC: H01J47/08
Filed: 1951-12-10
Abstract: An alloy of iron and chromium is deposited on the wall of the glass envelope from a wire which is heated electrically to form the cold cathode of an electric-discharge tube such as a counter tube.  The wire may be straight or may be in the form of a helix which extends the length of the tube and is wound on a silica or a borosilicate glass rod through which a leading-in wire may pass. The wire is made of an alloy containing iron and less than 40 per cent chromium; preferably it consists of 20 per cent chromium and 80 per cent iron. The pitch of the helix may be variable so that the deposited cathode may have a variable thickness.  The wire is first heated to 500-600 DEG  C. for 1 hour or for a few minutes at 900 DEG  C. in a vacuum. The tube is evacuated to a pressure of 10-4 mms. and the wire heated to 900 DEG  C. for a few seconds to deposit metal onto the tube, if necessary through masks.  The coating may be treated with nitric acid to render it resistant to the filling of halogen, e.g. bromine.
Patent GB-159289-A (GB)
Title: Improvements in or relating to profile milling cutters
IPC: B23F21/14
Filed: 1919-11-20
Abstract: 159,289. Bonnaffous, C., and Bozonnet, B. Nov. 20, 1919. Milling- cutters. - A spur gear or other profiletoothed milling-cutter has the profile backedoff surface of each tooth of conoid form, generated by a straight line a:, d, always at right-angles to the axis o of the cutter, but sliding at one position on a line a parallel to the axis o, and at another point on a profile, c, e, corresponding to the cutting-edge of the tooth. The position of the line a is so chosen that as the angle of the cutting- face relatively to a plane passing through the axis o varies through sharpening of the cutter, so the tooth profile varies to compensate for this variation and to keep the shape of the tooth constant.
Patent GB-678302-A (GB)
Title: Improvements in or relating to contact half-tone screen photographic camera
IPC: G03B27/66
Filed: 1949-11-14
Abstract: 678,302. Photographic half-tone screen cameras. POWERS PHOTO ENGRAVING CO. Nov. 14, 1949 [Nov. 13, 1948], No. 29087/49. Class 98 (i). In photo-engraving camera, two support. ing frames of equal size and shape are urged apart by resilient means along parallel directions by means of guides carried by one of the frames and cooperating with the other frame, the movement away from one another being limited by stop means including parallel guide studs on one frame co-operating with guide holes on the other, and means is provided on one of the frames on that side of the frame furthest from the other frame for mounting a contact half-tone screen. As shown, a half-tone screen on a glass-plate 10 is attached to a frame 14 by clips 20 engaging the top and bottom bevelled margins and by lateral locating stops 22, none of which project beyond the outer face of the plate. The frame 14 is maintained parallel to a second similar frame 16 by nut-and-bolt connections 26, 28 and the frames are urged apart by springs 32. The screen carried on the two frames is mounted in the camera by brackets 42 slidably mounted on the frame 16 and provided with locking-nuts 46, the brackets having slots 52 by which they are secured with nuts and bolts 54 to parallel vertical guides 40 mounted in the camera for axial movement. The guides 40 are moved rearwardly when the screen is mounted thereon to press the screen lightly against a lightsensitive film or paper sheet which is located on the perforated plate 62 of a vacuum frame and the screen and light-sensitive material are brought into intimate contact with each other and the plate 62 on applying suction through the pipe 66.
Patent GB-921445-A (GB)
Title: Improvements in fluid pressure gauges
IPC: E21B47/06
Filed: 1959-08-25
Abstract: 921,445. Fluid pressure-gauges. MARTINDECKER CORPORATION. Aug. 25, 1959 [April 23, 1959], No. 29091/59. Class 106 (2). A fluid pressure-gauge comprises a housing connectable at its base to a source of pressure fluid and having an inwardly extending neck 18 with a flat face 19 on which a Bourdon tube support 21 is mounted with interposed sealing means, the neck having a bore 37 extending therethrough for the passage of fluid and accommodating an axially disposed damper screw 44 which extends past a lateral orifice 36 leading to a passageway 35 in the tube support 21. The pressure of fluid in the line 3 is transmitted by a flexible member 42, made of beryllium copper, through a restriction 37a and passage 35 to the Bourdon tube 22. The restriction 37a consists of a tapered thread and can be adjusted by rotation of the damper screw 44 to vary the restriction to liquid flow. The member 44 is provided with a cross slot 44a which is directly underneath an opening 47 provided for filling the body of the gauge with a damping fluid such as oil. In order to allow for expansion of this fluid caused by changes in the ambient temperature a bladder 48, having a vent 50 to the atmosphere, is provided. This will contract as the fluid expands. The Bourdon tube is filled with liquid by means of a port 21a, a bleed valve 43a in the lower end of the member 42 and a further one (not shown) in the closed end of the tube 22 being provided to facilitate this operation. The gauge is stated to be of use in measuring tne pressure existing in the mud used in well-drilling.
Patent GB-1286164-A (GB)
Title: Marking instrument
Inventor: SHURCLIFF JOHN PERKINS
IPC: B43K23/00
Filed: 1970-06-16
Abstract: 1286164 Pencil holders J P SHURCLIFF 16 June 1970 29112/70 Heading B6P A writing instrument comprises a body 1 having a tip portion 3 adapted to grip a marking element 14 therein, and means for storing spare marking elements 14 comprising convex surfaced recesses 15, 16, 20, 22 and a resilient band 23 to retain the marking elements 14 against the convex surfaces. The body 1 is formed in two parts which are held together by screws as at 11, 12, the screws being releasable to allow an element 14 to be inserted into the tip portion, the screws then being tightened to clamp the element in place. In modifications, an additional element store may be provided wherein the elements are stored longitudinally of the instrument (Figs. 5-7), two marking element gripping means may be provided (Figs. 8-9), two similar element stores may be provided (Figs. 11-13), or the store may be in the form of a magazine for location in an aperture in the body (Figs. 14- 18).