baber/WOPTO huggingface dataset:
Patent GB-791324-A (GB)
Title: Improvements in or relating to the production of shaped bodies from heat-resistant oxidation-proof materials
IPC: C04B35/64
Filed: 1954-06-03
Abstract: A shaped body produced powder-metallurgically from a material consisting mainly of molybdenum disilicide is provisionally shaped, sintered in a protective atmosphere at a temperature lower than its operating temperature, then heated in air at a temperature corresponding to its highest operating temperature, e.g., 1600 DEG C., the silica formed filling over the pores and producing a protective surface of quartz glass.  The body is made of several sections of different composition, and the double firing is either on single sections which are integrated by a further heating, or the body is made from the several sections which are doubly fired and so joined together.  0,5 to 50 per cent of tantalum disilicide can be present.  Also present may be silica, alumina, silicides of vanadium and niobium and a silicate binder, as in Specification 791,323.  The integral sectioned body is used as a resistance, the different sections having differing resistivities, the end sections being impregnated with a conducting metal.  The end sections are "cold sections" the inner being "incandescent sections."
Patent GB-739572-A (GB)
Title: Compensating winding for electrical machines
IPC: H02K23/24
Filed: 1954-06-21
Abstract: 739,572. Commutating windings for dynamoelectric machines. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. June 21 1954 [June 22, 1953], No. 18107/54. Class 35. In a machine, e.g. a cross-flux machine, whose commutated armature has independent electrical circuits, the non-compensated E.M.F. from one circuit appearing in the commutating zone of the other circuit, is neutralized by windings in the interpolar gaps or below the commutating poles. As shown in Fig. 3, the E.M.F. m1 induced by the poles of the other circuit is neutralized by E.M.F. m<SP>2</SP> produced by windings L situated in slots in the main and commutating poles. An arrangement of flat coil for placing beneath the commutating pole is shown in Fig. 6.
Patent GB-676841-A (GB)
Title: Nickel carbonyl activation in organic carbonylation reactions
IPC: C07C51/14
Filed: 1950-07-20
Abstract: Carbonylation reactions effected with nickel carbonyl at 100-1000, preferably 300-800 atmos., and 150-350 DEG , preferably 240-295 DEG C., are carried out by varying and controlling the reaction temperature while the reaction is in progress so that it is within 25 DEG  C. of the decomposition temperature of nickel carbonyl. Reactions specified are those of carbon monoxide with olefinic compounds, and compounds having hydrogen replaceable by metal, e.g. ammonia, primary and secondary amines, carboxylic acids, hydrogen, alcohols, phenols, and water.  Examples are the reaction of olefins, carbon monoxide, and carboxylic acids to give acid anhydrides, described in Specification 631,001, and of acetylene, carbon monoxide (or nickel carbonyl) and water to yield acrylic acid.  An alkanoic acid, e.g. propionic, carbon monoxide, and an olefin, e.g. ethylene, may be reacted continuously in a succession of reaction zones at successively lower temperatures controlled so that in each zone the temperature is 1-15 DEG  C. below that defined by the equation <FORM:0676841/IV (b)/1> where pCO, pNi(CO)4 are the partial pressures of CO and Ni(CO)4 in atmos., and TC DEG  is the temperature in  DEG C., this equation defining the decomposition temperature. Results of the reaction of CO, C2H4, and H2O, nickel propionate, which forms the carbonyl in situ, being added as catalyst, show that nickel carbonyl is most active at a temperature approaching the decomposition point. The concentration of the catalyst may be 0.001-0.45, especially 0.001-0.06 mol. per mol. of CO required.  In examples: (1) ethylene is converted to propionic acid in a tubular reactor having 3 sections at 270 DEG , 255 DEG  and 245 DEG  C., respectively, pressure being 600 atmos.; (2) isobutylene is converted with CO and ammonia, methylamine, methanol or phenol; (3) ethylene is converted to propionic acid in a converter made up of 15 sections each kept at 245 DEG  C.  Samples analyzed at successive points show that the catalyst activity increases as the decomposition temperature approaches 245 DEG  C.; (4) propionic acid is converted to propionic anhydride using various molar ratios of CO to other reactants, maximum conversions being obtained when the CO partial pressure is such that the decomposition temperature is only about 5 DEG  C. above the converter temperature.
Patent GB-137249-A (GB)
Title: An improvement in electric laundry irons
IPC: D06F75/26
Filed: 1919-07-21
Abstract: 137,249. Fitzgerald, A. E. July 21, 1919. Electric hand-irons provided with thermal cutouts have means whereby the temperature at which the cut-out operates may be varied at will. In the form shown in Fig. 3, a bar 1 insulated from the iron 13 carries a bi-metallic strip 10 which is adapted to raise a spring arm 5 and so separate contacts 6, 7 when the maximum temperature is reached. This point is varied by altering the normal distance of the strip from the arm 5 by means of a screw 12 extending outside the iron. In a modification, Fig. 4, a porcelain well 19 in the floor of the iron contains a copper coil 18, one end 20 of which may be adjusted by a screw 28 and the other end 22 of which carries one of the pair of contacts 23, 24.
Patent GB-624820-A (GB)
Title: Improvements in oil-immersed electric isolating and selector switches
IPC: H02B13/02
Filed: 1947-07-09
Abstract: 624,820. Oil-break switches. DAVIES, D. R., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. July 9, 1947, No. 18148. [Class 38(v)] The movable contact rod 6 of an isolating or selector switch is readily removable from its operating carrier 9 to permit inspection or replacement, by opening the cover 14 and then unscrewing from the carrier 9 a sleeve 8 in which .is secured an insulating tube 7 supporting the contact 6. A toothed sector 18 engaging teeth on the carrier 9 moves the contact 6 down to bridge socket contacts 3, 4. For testing or earthing purposes, a plate 34, Fig. 4, carrying a contact rod 30 is positioned on the switch casing through the intermediary of insulation 35, so that when the contact 6 is in the upper, open-circuit, position and the rod 30 is lowered, a contact 31 on the rod 30 engages a lug 32 on the contact 6.
Patent GB-570838-A (GB)
Title: Improvements in and relating to dynamo-electric machines
IPC: H02K23/14
Filed: 1942-12-22
Abstract: 570,838. Dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 22, 1942, No. 18211. Convention date, Dec. 31, 1941. [Class 35] In a cross-field machine, auxiliary excitation is provided from an A.C. source to minimise the effect of residual magnetism. The Figure shows an armature reaction excited machine comprising an armature 30 having primary and secondary brushes 14, 15 and 16, 17 respectively and rotating in a magnetic frame 10 having split poles 11, 12 provided with polepieces 22, 23 and 24, 25 respectively. The brushes 14, 15 are shortcircuited through primary exciting windings 18-21 arranged on the polepieces and producing fluxes 26 aiding the primary armature reaction 27. The load characteristics of the machine are controlled by a separately excited winding 29 on each of the poles 11, 12 and producing a flux 30 opposing a secondary armature reaction 28, the speed of response of the machine to variations in excitation of the winding 29 being improved by windings 33 which compensate for secondary armature reaction. The effects of residual magnetism and hysteresis are reduced by a transformer 35 which supplies alternating current of peaked wave form to terminals 38, 39 of the primary exciting winding, as shown, so as to provide alternating excitation components 40 of reverse polarity in adjacent polepieces. In a modified construction, there are no windings common to the two polepieces, such as the windings 29, 33, the windings being provided on each individual polepiece, and in one such arrangement the primary exciting winding is omitted, the primary brushes being short-circuited and the alternating current component introduced into the circuit of the secondary armature reaction compensating winding. Specifications 539,835 and 556,397 are referred to.
Patent GB-1305755-A (GB)
IPC: B32B7/08
Filed: 1970-04-16
Abstract: 1305755 Laminated metal-wood beams S W LINDAL 16 April 1970 [24 April 1969] 18244/70 Heading B5N [Also in Division E1] A prestressed laminated beam comprises (i) a wooden beam 22 which is bent in a plane parallel to its longitudinally-extending major face by forces WBF, opposite to those anticipated upon installation, secured to (ii) a metal lamina 24 which holds the wooden beam in its prestressed configuration. The metal lamina may be prestressed by tensile forces MTF. Securing may be by elements punched from but remaining integral with the metal sheet, by separate fastening elements, e.g. nails, screws, bolts, or by adhesive. Two laminated beams may be secured together with their metal faces in contact, or one metal sheet may be disposed between two wooden beams. The metal sheet may be replaced by two spaced metal strips disposed above and below the longitudinal centre line (the forces MTF being applied to the lower strip), and may be shorter in length than the wooden beam.
Patent GB-392761-A (GB)
Title: Improvements in and relating to induction electricity meters and the like
IPC: G01R11/36
Filed: 1932-06-28
Abstract: 392,761. Supply meters. MEASUREMENT, Ltd. and HOLDEN, F., Townsend House, Greycoat Place, London. June 28, 1932, No. 18287. [Class 37.] A series electro-magnet for an induction motor meter is provided with a magnetic shunt formed of two plates a of steel or other magnetizable material about 0.7 mm. thick applied to the respective pole faces of a two-limbed magnet core d so as to intercept the series flux traversing the rotor and separated from each other at their junction by a small airgap about À002 inch wide. The gap may be determined by attaching a strip c of non-magnetic material such as brass to the edge of one of the plates. Notches f are formed at the abutting edges of the plates a as shown. The plates may be secured to the pole faces by cement with or without screws b. Sheets of paper may be interposed between the plates and the pole surfaces.
Patent GB-697696-A (GB)
Title: Improvements in colour television systems
IPC: H04N3/32
Filed: 1949-08-15
Abstract: 697,696. Colour television. FRANCE, H. G. M. DE. Aug. 15, 1949 [Sept. 14, 1948], No. 18322/51. Divided out of 697,645. Drawings to Specification. Class 40 (iii). In a three-colour television system comprising three channels each conveying signals corresponding to one component colour, the signals carried by two of the channels pass through low-pass filters to limit their bandwidths and the colour components conveyed by the channels are cyclically interchanged by synchronized switching at the transmitter and receiver, so that, at the receiver, each colour component periodically passes through a condition of high definition, the other two components being simultaneously in a condition of lower definition.
Patent GB-1105324-A (GB)
Title: Polymerization process
Inventor: POPE GEORGE ARTHUR
IPC: C08F10/14
Filed: 1964-05-02
Abstract: Amorphous polymers of an (n-1)-methyl-1-alkene in which n represents the number of carbon atoms in the main alkene chain and in which n is greater than 3 are made by polymerizing one or more alkenes in the presence of a catalyst comprising a compound of a metal of Groups IVa to VIIa or VIII of the Mendeleeff Periodic Table, and an aluminium dialkyl halide, in which the molar ratio of the metal of Group IVa to VIIa or VIII to aluminium in the catalyst is greater than 1:1. Specified alkenes are 3-methyl-1-butene, 4-methyl-1-pentene, and 5-methyl-1-hexene. The alkenes may be copolymerized with isobutylene, cyclopentadiene, 2 - methyl - 1,5 - hexadiene, vinylcyclohexene, dicyclopentadiene, or styrene.  The term "amorphous polymers" excludes polymers formed only by 1,2-addition and includes polymers which also contain 1,3-, 1,4-, 1,5- &c. structures. The polymerization may be effected in bulk, but preferably in an organic solvent.  The preparations of poly-4-methyl-1-pentenes, and copolymers of 4-methyl-1-pentene and isobutylene are exemplified.
Patent GB-870415-A (GB)
Title: A process for the manufacture of grignard reagents
Inventor: LEIGH THOMAS
IPC: C07F3/02
Filed: 1959-05-29
Abstract: Grignard reagents of formula RMgX wherein R stands for a hydrocarbon or heterocyclic radical, optionally substituted, and wherein X stands for a chlorine, bromine or iodine atom are made by reacting a compound of formula RX wherein R and X have the meanings set out above, with magnesium and tetrahydrofuran in the presence of a hydrocarbon having a boiling point within the range 75-200 DEG C. Suitable hydrocarbons include benzene, toluene, xylene, tetrahydronaphthalene, kerosene or a petroleum ether fraction boiling within the range 75-200 DEG C.  No more than 1 mole of tetrahydrofuran is required for the reaction.
Patent GB-440414-A (GB)
Title: Improvements in and relating to shelves for shop windows and the like
IPC: A47F3/06
Filed: 1934-06-21
Abstract: 440,414. Display stands. LYONS & CO., Ltd., J., Cadby Hall, Kensington, London, and JENKINS, A. J., 9, Cavendish Gardens, Ilford, Essex. June 21, 1934, No. 18375. [Class 52 (v)] A shelf arrangement for shop windows and the like comprises shelves b, c mounted on rotatable supporting columns a so as to form a number of rotatable units, the shelves of each unit being staggered relatively to those of adjacent units to permit free rotation of each of the units independently of the others. The shelves are located by projections n in and upon frames k which are secured to two supporting rods a. The rods a are joined together at each end by a cross-piece d carrying a trunnion e which engages a bearing in an upper shelf g and in the floor of the window. Where three units are mounted in the same window the outer two have shelves extending forwardly and rearwardly and the inner one has shelves extending forwardly only. Tubular lamps h may be arranged between the supporting rods a of each unit. Removable boards r for buns may be arranged to slide between the units on the floor of the window.
Patent GB-1498944-A (GB)
Title: Interferometer systems
IPC: G01B9/02
Filed: 1974-04-26
Abstract: 1498944 Interferometers INDUSTRY, SECRETARY OF STATE FOR 16 April 1975 [26 April 1974] 18479/74 Heading G1A [Also in Division G2-3] An infrared interferometer system (e.g. for testing a prism 40) comprises an interferometer 28 (Twyman-Green, as shown or Mach-Zehnder); beam scanning means (e.g. mirror 14) by which a.narrow incident beam 12 (e.g. from laser 10) is linescanned over an area of the entrance aperture of the interferometer and a radiation detector 50. The scanning element may be a single mirror, a pair of mirrors, a mirror drum or an acoustooptical quartz element. The detector 50 may be a solid-state photodiode, a bolometer, a thermopile or a thermistor. The output from the detector may control the intensity of the display on a long-persistence C.R.T. while the deflection is controlled by signals from the mirror drive unit so that an interferogram is built up.
Patent GB-496822-A (GB)
Title: Improvements in or relating to calenders for use in ornamenting fabrics
IPC: D06C15/00
Filed: 1937-07-03
Abstract: 496,822. Embossing-machines. UNITED TURKEY RED CO., Ltd., and CHRISTIE, J. H. July 3, 1937, No. 18510. [Class 100 (ii)] An embossing-machine for operating on textile fabrics, e.g. artificial silk, so as to produce a polished or cirÚ finish on the embossed parts comprises an engraved cylinder 1, a cylinder 2 covered with cotton, paper, or other impressionable material which is patterned in relief by contact with the cylinder 1, and a cylinder 3 pressing frictionally on the fabric 4 passing between it and the cylinder 2 so as to produce an embossed pattern with a high lustre on the relief parts of the fabric. The cylinders 2, 3 are driven from the cylinder 1, the latter through an adjustable gear train 11, 12, 13 at a peripheral speed much higher than that of the fabric. Fine-pitch screws 14 are provided for. adjusting the pressure of the cylinder 3. Provision may be made for internal heating of the cylinders 1, 3. The cylinder 1 is journalled in bearings urged towards the cylinder 2 by a weighted lever 21 acting through a link 22 and lever 23. By rotating a hand-lever 24 connected to a link 25 beneath the lever 21 the pressure may be relieved.
Patent GB-658013-A (GB)
Title: Tube closing system
IPC: B65D47/24
Filed: 1949-07-13
Abstract: 658,013. Closures for tubes. SACUSA SOC. ANON. July 13, 1949, No. 18521. Convention date, July 15, 1948. [Class 125(iii)] The closure cap 2 for a tube 1 has an opening 13 which receives the end of a plug 8 which with the webs 7, is integral with a stepped cylindrical insert 3, the margin 14 of the opening 13 seating, when the cap is screwed down, upon the conical surface 15 before the surface 16 seats upon the top of the insert 3, this latter seating being permitted by the downward distortional displacement of the plug 8 effected during the final screwing down of the cap. The parts 2, 3 may be of plastic.
Patent GB-121461-A (GB)
Title: Improvements in or relating to Two-stroke Cycle Internal Combustion Engines.
Inventor: HUGO SCHNEEBELI
IPC: F02B25/12
Filed: 1918-11-12
Abstract: 121,461. Schneebeli, H. Dec. 8, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Two-stroke-cycle engines. - In an engine having a pair of communicating cylinders with pistons e, f acted upon simultaneously by each impulse, air is compressed in a common crank casing c and is carburetted with fuel admitted through a spraying - nozzle r located in a transfer passage i. Air enters the crank casing through a non-return valve d, and the non-carburetted portion of the air compressed in the transfer passage serves as a scavenging charge. A separate pump may supply the scavenging charge.
Patent GB-365971-A (GB)
Title: Process for the production of rubber diaphragms as separators for primary and secondary cells, electrolytic cells, filters and the like
IPC: H01M50/414
Filed: 1931-06-26
Abstract: 365,971. Filtering - media. BECKMANN, H., 26, Albertinenstrasse, Zehlendorf, Berlin. June 26, 1931, No. 18573. Convention date, Aug. 2, 1930. Addition to 238,870, [Class 46, Filtering &c.]. [Class 46.] Corrugated porous rubber sheets for use as filters &c. are obtained by coagulating latex to form a sheet of jelly, partly vulcanizing this without applying pressure or permitting the evaporation of the contained water, corrugating the sheet by known means, and then completing the vulcanization while avoiding evaporation of water.
Patent GB-1394321-A (GB)
Title: Hydraulic circuits
IPC: F16H61/00
Filed: 1973-04-18
Abstract: 1394321 Change-speed control REGIE NATIONALE DES USINES RENAULT and AUTOMOBILES PEUGEOT 18 April 1973 [19 July 1972] 18617/73 Heading F2D In a torque-converter-driven intermeshed planet gear on a motor-vehicle, having ratioselecting clutches E1, E2 and brakes F1, F2, applied automatically by fluid pressure supplied by a single engine-driven pump 17, and regulated by a main regulator valve 23, pressure is supplied through a line 32 to a pressure-increasing loading chamber C2 of the regulator valve 23 through a valve 25, which is opened, to supply pump pressure 20 to the line 32, by engine-speedresponsive pressure in a line 34, leading through a restrictor 36 from a regulator valve chamber C3 exhausting through a restrictor 38, which last-named creates a pressure drop resulting in the speed-response. Line pressure is thus reduced at low engine speeds when the valve 25 closes. The regulator valve 23 is additionally loaded by a spring 44 and by pressure 27 supplied by a regulator valve 24 loaded at 30 by engine intake depression. Other items are as follows: 39 is an output regulation valve; 40 a shut-off valve; 41, 42 electro-hydraulic shift-valves; and 43 a manual valve.
Patent GB-376002-A (GB)
Title: Improvements in vulcanizing apparatus
IPC: B29C35/02
Filed: 1931-06-29
Abstract: 376,002. Vulcanizing long lengths. FRÍLICH, E., Freiheit, near Osterode, Harz, Germany. June 29, 1931, No. 18723. Convention date, July 2, 1930. [Class 70.] In vulcanizing long lengths of rubber by pressing them in contact with a drum a by means of an endless metal band b, the band consists of individual layers ofinterlinked transverse spiral wires, interconnected by the interlinking of the spirals of one layer, with those of the next. A band of felt or the like e is interposed between the metal band and the drum to take up inequalities of pressure.
Patent GB-279547-A (GB)
Title: Improvements in machines for assembling upholstery springs
IPC: B68G9/00
Filed: 1926-07-27
Abstract: 279,547. Marks, E. C. R., (Simmons Co.), July 27, 1926. Upholstery stuffing-apparatus.-Fabric pockets containing upholstery springs are produced in a continuous length by a machine which forms, compresses and inserts springs between the edges of a folded fabric strip and stitches the latter longitudinally and transversely to form the pockets, the springs are then allowed to expand, after which they are turned in the pockets to lie parallel to the transverse seams. From the spring coiler A, which is of ordinary construction, mounted on the right of the base plate, the finished springs are passed down a guide rod 52 and compressed on a.n anvil by a cam-operated plunger 84. An oscillating arm 106 with a boxlike end transfers the compressed springs to a position between the plies of the folded strips fed from the drum 11. The fabric on entering the machine is passed over a guide 37 and the plies separated by a spreader plate 40, the lower ply is then engaged by spikes on conveyer plates 22 mounted on a rotating sprocket chain. Upper plates 25 hinged to the conveyer plates 22 co-act with them to clamp the inserted springs in position and are closed down, against the action of springs 28 by engagement with a cam bar 20 extending along the front of the machine. With the springs in place the fabric is drawn past a sewing-machine G which stitches a longitudinal seam along its edges, it then passes before a pair of sewing machines H mounted in transverse slides 153 which can themselves be moved longitudinally on a face plate 144 to keep pace with the fabric while traversing it. The longitudinal and transverse motions are imparted by chains 166, 167 and pivoted arms, e.g. 189 respectively, which are actuated by cams, e.g. 174, 184, on a rear shaft 79<1>. The pockets being complete the conveyer clamps are released as they pass the end of the cam bar 20 and the fabric passes down a guide 369 to be gripped between cross bars on two parallel pairs of sprocket chains. Midway between the guide sprockets 332, 333 of these chains are a pair of revolving flexible arms 355, which bear on the rims of the upper and lower coils of the springs 1 through the fabric, and turn them from their vertical position into a horizontal position parallel with the transverse seams. The finished length of pockets then passes to a delivery shoot 373 and is afterwards cut into lengths and joined to form spring surfaces for mattresses, cushion and the like. Specification 284,553 is referred to.