baber/WOPTO huggingface dataset:
Patent GB-889924-A (GB)
Title: Improvements in or relating to electromagnetic brakes
IPC: F16D59/02
Filed: 1959-09-04
Abstract: 889,924. Electromagnetic brakes. DEWHURST & PARTNER Ltd., DEWHURST, M., and DEWHURST, A. Sept. 4, 1959, No. 30251/59. Class 103(1). In an electromagnetic brake, the energization of a winding causes the relative movement towards each other of two magnetic cores to control the brake through transmission means, the cores being releasably held in engagement with opposite sides of a pivot by spring means. Levers 1, 2 are pivoted to frame 10 at 7, 8, and carry shoes 4 which are biased against a drum 6 by a compression spring 9, Fig. 4, mounted between lever extensions 1a, 2a. The brake is released by energization of a winding 18 carried by a core 11 to attract a core 12, core 11 being prevented from rotation by a stop 23, 29; rotation of core 12 to abut core faces 11b, 12b moves a lever 25 to abut lever 1, and so move the levers 1, 2 apart. The cores 11, 12 are held in engagement with a pivot 13 on lever 2 by springs 14. The extent of lining wear and hence the gap between faces 11b, 12b is indicated by a pointer 36 pivotally mounted at 34 to core extension 11a and is engaged by an arm 37 pivoted at 35 to core extension 12a; a spring 26 connects pointer 36 to arm 37 which bears in a recess in a spring clip 38 mounted on pointer 36 (Fig. 3). When the brake is applied and the gap between faces 11b, 12b is correct, the pointer 36 is adjacent a mark 43 on a post 40; as the linings wear the pointer moves toward mark 42 since the rod 25 and head 24 rotate the core 12 relative to core 11. The gap is readjusted by moving a screw 28, abutting rod 25, into or out of lever 1. Initially, post 40 is set with faces 11b, 12b abutting and pointer 36 adjacent a mark 44; when the brake is applied the screw 28 is adjusted until the pointer is at 43. A window 45 in cover 27 enables the pointer to be seen. The compression of spring 9, Fig. 4, is adjusted by a screw 55 in extension 1a, which abuts a spring seat 51 fixed to a rod 48 slidable in extension 2a and supporting spring 9. An adjustable spring, Fig. 2, not shown, acts on extension 1a tending to release the brake to balance the bias on lever 2 due to the weight of the electromagnetic apparatus, thus ensuring that both shoes are applied. and released simultaneously. Specification 889,925 is referred to.
Patent GB-533731-A (GB)
Title: Supporting means for piezoelectric plates
IPC: H03H9/09
Filed: 1939-11-17
Abstract: 533,731. Piezo-electric crystal mountings. STANDARD TELEPHONES & CABLES, Ltd. Nov. 17, 1939, No. 30276. Convention date, Dec. 30, 1938. [Class 40 (v)] A shock proof mounting for a piezo-electric crystal comprises two strips of metal bent to form two pairs of arms 14, 15 and 16, 17 which are mounted together in spaced relationship by means of screws 26, 28 and insulating spacers 24 and 25. Two metal studs such as 33 are mounted in the middle of the pairs of arms and present two abutting surfaces which, when sprung apart, are adapted to embrace opposite metallised surfaces of a piezo-electric crystal 40. The whole assembly is mounted on an insulating block 6 by means of springy wires 12, 13 which also serve as leads and are connected to external pins 4, 5. A metal cover 1 is soldered to the base 2 and may be evacuated. Mica strips 35, 36 clamped to the arms 14, 17 serve to prevent undue lateral movement of the assembly.
Patent GB-743308-A (GB)
Title: Process of preparing ice-colours in textile printing
IPC: D06P1/12
Filed: 1953-11-03
Abstract: The process of preparing ice-colours in textile printing, by applying to the fabric a composition containing a water-soluble diazoamino compound, a coupling component, an alkali metal salt of a halogenofatty acid, and a fixed alkali, and developing the print with neutral steam, is improved by using a diazoamino compound with water-solubilizing groups in the stabilizer obtained from a negatively substituted diazotized amine and a weakly basic stabilizer, or from a positively substituted diazotized amine and a stabilizer of more strongly basic character, and also by using the fixed alkali in a quantity of 1 to 2 mols per mol of the coupling component present.  Specified salts of halogeno-fatty acids are those of monochloracetic and monochlorpropionic acids.  Numerous diazoamino compounds and coupling components are specified and in the Examples the printing pastes also contain glycolmonoethyl ether and starch-tragacanth thickening.  Specifications 715,249 and 723,389 are referred to.
Patent GB-1474806-A (GB)
Title: Automatic radio telephone system
IPC: H04W72/06
Filed: 1974-07-10
Abstract: 1474806 Automatic exchange systems BUDAPESTI RADIOTECHNIKAI GYAR 10 July 1974 30568/74 Heading H4K A radio telephone system which includes a switching network which is used only for connections involving at least one radio subscriber, is so arranged that, for a duplex connection between two radio subscribers or a connection between a radio subscriber and a telephone network subscriber, a connection through the switching network is used whereas for a simplex connection between two radio stations the switching network is not utilized. The radio stations may be mobile or fixed and the radio channel allocasion uses the known method of making the next free channel whereby a radio station initiating a call seizes the marked channel. The arrangement comprises a two wire cross-bar switching network 4 to one side of which are connected individual telephone subscribers bias 22 and trunks 14, 16, 18 extending to exchangers of various hierarchical levels. Radio channel units comprising transmitterreceiver pairs 28 are coupled via 2-4 wire converters to the other side of the network. For a duplex connection between two radio stations a transmitter/receiver pair 28 is allocated to each station and they are coupled via the switching network 4; each station then transmits and receives on a different pair of frequencies. For a simplex connection only a single transmitter/ receiver pair 28 is allocated and the two stations transmit and receive using the same pair of frequencies. Calls to or from telephone subscribers involve a single transmitter/receiver pair 28 and a single connection across the network 4. Subscribers to some telephone exchangers, e.g. 14 may be provided with special units 20 for signalling the identity of a particular radio station once a connection to the radio system exchange has been accomplished. Subscribers to other exchanges, e.g. may only have access to a single radio station of which the identity is stored in the line unit 10. Radio stations may be arranged in groups whereby a call to a single number can be answered by one or more members of the group. Means are provided for monitoring radio connections and if a break in communication is detected the call may be automatically terminated. During busy periods call duration may be limited.
Patent GB-936872-A (GB)
Title: Improvements in or relating to a process of heat treating austenitic stainless steel and austenitic stainless steels whenever prepared by the aforesaid process
IPC: C21D8/00
Filed: 1960-09-05
Abstract: Austenitic stainless steels are treated by the process which comprises selecting a steel of the transformation hardening type with or without precipitation hardening superimposed thereon and consisting of 0.01 to 0.4% C, 0.05 to 8.0% Mn, 0.05 to 2.0% Si, 8.0 to 20.0% Cr, 1.0 to 13.0% Ni, trace to 0.6% N, trace to 4.0% of at least one of the metals Al, Mo, V and Cu, the balance being iron and impurities, and containing not more than 5% delta ferrite in the annealed condition at room temperature; hot working, e.g. by rolling, the steel into the form of strip; cleaning the strip; annealing the steel strip at above 1900 DEG  F., e.g. for 5-30 minutes, to dissolve the carbides and stabilize the austenite; cooling the steel sufficiently quickly to prevent carbide precipitation; cold working the steel to finish gauge, e.g. to effect at least a 10% reduction in cross-sectional area, so that a portion of the austenite is transformed into martensite and slip bands are provided in the austenite phase; critically annealing the steel at between 1800 DEG and 1875 DEG  F., e.g. by heating continuously for 15 seconds-20 minutes, to randomly precipitate a portion of the carbides throughout the microstructure; trigger annealing the steel at between 1650 DEG and 1750 DEG  F., e.g. for up to 1 hour, to randomly precipitate additional carbides and unbalance the austenite phase; cooling the steel sufficiently quickly, e.g. by quenching, to prevent further carbide precipitation; sub-zero cooling to below - 80 DEG  F. and preferably above -110 DEG  F., e.g. for 3 hours, to transform the austenite to martensite; and tempering the steel at between 750 DEG and 1050 DEG  F., e.g. for up to 16 hours. The cold working step may include one or more operations such as by rolling to work the steel to within 10 to 40% of the cross-sectional area of the finish gauge and re-annealing of the intermediate gauge, e.g. at between 1900 DEG and 2000 DEG  F., prior to the final cold working.
Patent GB-178873-A (GB)
Title: Improvements in or relating to multiplex telegraphy and like electric signalling
IPC: H04L5/06
Filed: 1920-10-29
Abstract: 178,873. Potter, E., (Pernot, F. E., and Rich, L. J.). Oct. 29, 1920. Harmionic telegraphs; duplex and multiplex telegraphs.-In a system for simultaneous transmission and reception of alternating-current signals, either per se or in combination with directcurrent signals, selective reception and transmission of the alternating-current signals, without mutual interference, are obtained by the use of conjugate circuits comprising networks of impedances. The invention is described as applied to a system for simultaneous transmission and reception of one direct-current and two alternating- current signals in each direction. Direct-current signals are sent in the usual way from a battery E by a key K to line 1, 4 being the artificial line and C1, C2 bridge-arm condensers. Alternating- current generators E1, E11 of different frequencies and signalling-keys K1, K11 are connected to corresponding networks of impedances 13 - - 16 and 17 - - 20, earthed at 23. The impedances shown include condensers, but when condensers are not used in the networks, a condenser is provided in the earth connection, to prevent leakage of directcurrent signals. The key K is earthed through a high inductance 2 with low resistance to minimize alternating-current leakage. For the reception of signals, the direct-current receiver G is disposed in the usual way, and in series with a high inductance 3 of low resistance. The alternating- current receiver telephones T1, T2 are connected to amplifiers A1, A2 which are themselves connected with corresponding networks of impedances 5 - - 8 and 9 - - 12 in parallel with receiver G. By adjustment of the impedances, signals originating in any one generator circuit do not affect the other generator circuits, and signals coming over the line affect only the correspond. ing receivers. To increase the selectivity of the apparatus, inductances L1, L2, 24 and condensers 3<1>, 25, 27 may be added where shown. Specification 180,349, [Class 38 (ii), Electric currents, Converting &c.], is referred to.
Patent GB-1148733-A (GB)
Title: Methods of controlling aquatic weeds using water-soluble azides
IPC: A01N33/26
Filed: 1966-07-08
Abstract: 1,148,733. Aquatic weed control using azides. P.P.G. INDUSTRIES, Inc. 8 July, 1966 [8 July, 1965; 11 May, 1966], No. 30692/66. Addition to 1095796. Heading A5E. Aquatic weeds are controlled by the application of one or more water-soluble azides to the water in which the aquatic weeds are growing. The azides may be formulated with a solid inert carrier or an aqueous or organic liquid. The formulations may contain ionic or non-ionic surfactants and other herbicides e.g. isopropyl N-(3-chlorophenyl) carbamate, and S-ethyl hexahydro-1H-azepine-1-carbothioate, 2,4-dichlorophenoxyacetic acid, 2,4,5-trichlorophenoxyacetic acid, 2-(2,4,5-trichlorophenoxy) propionic acid and 2-methyl-4-chlorophenoxyacetic acid. Specified azides are HN 3 , NaN 3 , KN 3 , LiN 3 , RbN 3 , CsN 3 , Ca(N 3 ) 2 , Sr(N 3 ) 2 , Ba(N 3 ) 2 , NH 4 .N 3 , Ni(N 3 ) 2 .NH 4 .N 3 , Ni(N 3 ) 2 -KN 3 , N(Et) 4 -N 3,  N(Me) 4 .N 3 , (NH 2 OH) 2 -HN 3 , N 2 H 4 . HN 3 , and water-soluble azides of the formula R-CON 3  wherein R=alkyl, or a phenyl, phenoxy, methyl or naphthyl residue which may contain a nitro, halo, cyano, alkyl, alkoxy or aryloxy substiluent.
Patent GB-663691-A (GB)
Title: A process for the manufacture of methylchlorosilanes
IPC: C07F7/12
Filed: 1949-11-30
Abstract: Methylchlorosilanes of the general formula (CH3)xSiCl4-x, where x is 2 or 3, are prepared by heating a mixture of phenyldimethylchlorosilane and diphenyldichlorosilane and/or phenyltrichlorosilane in the presence of less than 50 per cent by weight of aluminium chloride based on the weight of chlorosilanes at a temperature of from 180 DEG  to 250 DEG  C.  The preferred proportion of aluminium chloride is from 0.001 to 10 per cent by weight based on the weight of the total chlorosilanes.  The phenyldimethylchlorosilane and the phenylchlorosilanes may be reacted in equimolecular proportions. Diphenyldichloro- and triphenylchlorosilanes are also obtained. A number of examples are given.
Patent GB-477485-A (GB)
Title: Improvements in or relating to couplings for scaffolding members
IPC: E04G7/20
Filed: 1936-11-12
Abstract: 477,485. Scaffold clamps. BURTON, J. Nov. 12, 1936, No. 30863. [Class 20 (ii)] A scaffold clamp for tubular members and of the kind comprising pivoted clamping jaws 12,13 surrounding the outer ends of two tubes, which abut against an annular projection 19 on a jointing pin 17 fitting into the ends of the tubes, has the jointing pin secured permanently to the clamp. As shown in Fig. 3 the jointing pin 17 is provided with a perforated extension 20 through which the hinge pin 16 of the clamping members passes, and in order to compensate for inequalities in the ends of the tubular members, spaces 21, 23, Fig. 5, are provided between the hinge pin 16 and the hinge lugs 15 of the clamping jaw 12 and the jointing pin extension 20 respectively. The jointing pin may be fluted to reduce its weight. The clamping bolt for the hinged clamping members may be of the simple type described in Specification 451,949, or may be provided with a separate locking member as described in Specification 477,465.
Patent GB-1177194-A (GB)
Title: Telephthalic Acid Purification
IPC: C07C51/487
Filed: 1968-06-28
Abstract: 1,177,194. Terephthalic acid. MOBIL OIL CORP. 28 June, 1968 [25 Sept., 1967], No. 30883/68. Addition to 1,163,665. Heading C2C. Impure terephthalic acid is purified by forming a suspension of finely divided particles of a solid hydrogenation catalyst in a gaseous mixture containing vaporized impure terephthalic acid and a carrier gas, preferably hydrogen, passing the suspension through at least one bed containing diocrete particles of a refractory solid material of a size suitable for retaining a major proportion of the catalyst and then condensing the acid vapour to form the solid acid. The preferred hydrogenation catalysts are Group VIII metals, especially palladium. The preferred refractory material is sand or gravel or a mixture thereof. After passing through the catalyst retention beds the gaseous mixture may still contain solid particles in suspension and these may be eliminated by passing the gaseous mixture through a filtering device equipped with an extemely fine filter medium, e.g. a fine woven metal screen, ceramic mesh, porous metal plates prepared by sintering stainless steel, or titanium powder.
Patent GB-1199172-A (GB)
Title: Perfluoroalkylene Esters or Acids
IPC: C07C51/093
Filed: 1967-08-10
Abstract: 1,199,172. Perfluoroalkylene esters and acids; 2 - bromoperfluoropropyl trichloromethane. DOW CORNING CORP. 10 Aug., 1967 [10 Aug., 1966], No. 30932/67. Heading C2C. Bromoperfluoroalkanoic acids and esters of the formula Br(Rf)COOR, where Rf is a perfluoroalkylene radical containing at least two carbon atoms and having its unsatisfied bonds on adjacent carbon atoms and R is a hydrogen atom or a C 1-6  alkyl radical, are obtained by reacting bromoperfluoroalkyl trichloromethanes of the formula Br(R # )CCl 3 , with fuming sulphuric acid, and decomposing the products with compounds of the formula ROH. A mixture of compounds having the above formula but in which Rf is (CF 2 CF 2 ) n , n being from 1 to 5, may be used as starting material, in which case acids or esters of the formula Br(CF 2 CF 2 ) n COOR, where n is 2 to 5, are produced as by-products. 2 - Bromoperfluoropropyl trichloromethane, Cl 3 .C.CF 2 CFB 1 .CF 3 , may be produced by reacting bromotrichloromethane with hexafluoropropylene in the presence of di-t.-butyl peroxide.
Patent GB-299397-A (GB)
Title: Improvements in or relating to artificial teeth
IPC: A61C13/10
Filed: 1928-10-25
Abstract: 299,397. Lehmann, F. Oct. 25, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Teeth, artificial -The lingual surface of an artificial tooth, Figs. 1 and 2, is formed with a groove a to receive a hollow projection c on a backing plate, Fig. 3, and is recessed and provided with a transverse groove b at that portion nearest the cutting edge to receive a protecting plate, Figs. 5 and 6, which is provided with a solid rib e fitting the groove b and with a flange g covering the biting edge of the tooth. The protecting plate is formed with an incision f to receive the lower portion of the backing plate and abuts against a horizontal rib d, Fig. 4, on the lingual surface of the backing plate.
Patent GB-188672-A (GB)
Title: Improvements in apparatus for the revivification of finely powdered decolorizing carbon and like adsorbents
IPC: C01B31/08
Filed: 1922-11-13
Abstract: 188,672. Naamlooze Vennootschap Algemeine Norit Maatschappij, (known as General Norit Co., Ltd.). Nov. 14, 1921, [Convention date]. Addition to 104,456, [Class 55 (i), Coking &c.]. Fuller's earth is revivified in the apparatus described in the parent Specification modified by forming the condensation and dust-collecting apparatus of a plurality of units, each connected to the heating cylinders by short and wide conduits to prevent choking by accumulation of dust and to facilitate cleaning. The apparatus comprises a pre-drying trough 1, an upper retort 2, and a lower retort 3 through which the material is continuously moved by screw conveyers and from which the gases &c. evolved pass through wide tubes 5 - - 8 to condensers 9, 10, uncondensed gases escaping through chimneys 11, 12. Water or steam may be injected through atomizers 14 into the condensers to prevent solid particles from clogging together, and the sludge from the bottom of the condensers is discharged by an injector or pump 21, the more liquid portion overflowing by pipes such as 17 into tank 26 or 27 having mixing arms 31 to prevent settling of the solids in suspension. The liquid may be emptied through outlets 36, 38.
Patent GB-350865-A (GB)
Title: A new or improved device for use in discharging collapsible tubes
IPC: B65D35/28
Filed: 1930-10-17
Abstract: 350,865. Collapsable tubes. ROUND, H., 141, Great Charles Street, and HEWITT, J. H., 60, Farquhar Road, Edgbaston, both in Birmingham. Oct. 17, 1930, No. 31083. [Class 11.] In a container for collapsable tubes, formed of two or more parts, the contents are extruded by a roller 8, Fig. 1, operated through a slot 7 in the container 1, through which the knurled edge of the roller projects. The roller may be cylindrical or the cross section of its rim may be curved as shown in Fig. 13, in which case, the curved part 50 is shaped to correspond with a longitudinal channel 52 in the side of the casing 51. Further, the roller may be mounted upon a guide-plate or pin, having projecting portions at its ends, which engage projections upon the longitudinal edges of the casing, and the slot in the casing may be formed with inwardly turned edges 10, engaging grooves in the roller. Various forms of container are described, consisting of two or more parts hingedly and detachably connected together. The neck of the container may be screw-threaded to engage the threaded nozzle of the tube or a spring cap may be provided for closing the open end. By making the container relatively wider and employing two or more rollers disposed side by side, a plurality of tubes may be discharged simultaneously.
Patent GB-1213109-A (GB)
Title: Bourdon tube for pressure gauges
IPC: G01L7/04
Filed: 1969-06-19
Abstract: 1,213,109. Bourdon gauges. V.D.O. TACHOMETER WERKE, SCHINDLING G.m.b. H. June 19, 1969 [June 21, 1968], No. 31163/69. Heading G1L. A Bourdon tube has an inner tube 1, acted on by the pressure to be measured, and one or more tubes 2, 3 disposed around the tube 1 with a space or spaces 4, 5 between adjacent tubes filled with an incompressible medium and then sealed both ends.
Patent GB-172012-A (GB)
Title: Process for treating washing waters and particularly washing waters for wools
IPC: C11B11/00
Filed: 1921-11-22
Abstract: Washing-waters, especially those used for washing wool, are treated by ultra-filtration through a membrane under pressure, in order to separate substances in solution or suspension.  The membrane may be of collodion, denitrated collodion, denitrated nitro-cellulose, or cellulose precipitated from a cupro-ammoniacal solution.  The mineral salts and alkaline salts of lower fatty acids pass through the membrane, while the free upper fatty acids and their alkaline-earth salts, and other insoluble salts, and the insoluble organic elements of the suint remain behind.  The filtrate may be re-employed for washing, and again filtered. Soapy waters, before being used for washing, may be similarly filtered to remove excess of upper fatty acids formed by hydrolysis of the soaps.  The filter cake may be extracted from the filter by reversal of pressure, and the filter then regenerated by washing with dilute acids, alcohol, acetone, or methyl alcohol or acetate.ALSO:Alkali metal compounds, recovering from liquors containing organic matter.  Washing-waters, especially those used for washing wool, are treated by ultra-filtration through a membrane under pressure in order to separate substances in solution or suspension.  The membrane may be of collodion, denitrated collodion, dinitrated nitro-cellulose, or cellulose precipitated from a cupro-ammoniacal solution.  The mineral salts and alkali salts of lower fatty acids pass through the membrane, while the free upper fatty acids and their alkaline-earth salts and other insoluble salts, and the insoluble organic elements of the suint, remain behind.  The filtrate may be re-employed for washing, and again filtered.  Soapy waters, before being used for washing, may be similarly filtered to remove excess of upper fatty acids formed by hydrolysis of the soaps. The filter cake may be extracted from the filter by reversal of pressure, and the filter then regenerated by washing with dilute acids, alcohol, acetone, or methyl alcohol or acetate.