baber/WOPTO huggingface dataset:
Patent GB-1343876-A (GB)
Title: Apparatus for and method of magnetically aligning an electrical machine
IPC: H02K15/16
Filed: 1972-07-13
Abstract: 1343876 Magnetically centring electrical machines ROBBINS & MYERS Inc 13 July 1972 [29 July 1971] 32796/72 Heading B3A A method of magnetically centring an electrical machine which has a movable member 204, Fig. 2, and a stator 202 comprises positioning the member within the stator, applying electrical energy to the machine, sensing magnetic forces exerted between the member and stator, and relatively positioning the member and stator to minimize the forces. The movable member is preferably a rotor which has end bells 210, 212 secured between clamps 142, 140 and is situated, with the stator, inside a housing 200 which is positioned on pads (57), Figs. 3, 4, 7-9 (not shown), of a lower yoke member 56. The rotor is free to rotate about shaft 206 within the stator and the net weight of the housing and stator is sensed by sensing devices 48, 50, Fig. 5, 52, 54, the weight being indicated by respective instruments (162), (164), (166), (168), Fig. 1 (not shown). Rotor 204 may rotate when stator windings 203 are energized or remain stationary, during alignment. The magnetic force responsive devices 48, 50, 52, 54 provide signals to the sensing instruments according to the relative magnetic alignment of the rotor and stator, the magnitude of the forces applied to the devices being related to the applied voltage to winding 203. Arms 70, 92 can be adjusted to alter the forces sensed by devices 48, 54 using micrometer adjustment devices 80, 96. Similarly, arms 74, 128 can be adjusted using adjustment devices 116, 134. For example, movement of arms 70, 92 via devices 80, 96 causes movement of clamp 140, end bell 212 and consequently rotor 204. Leaf springs 68, 90 and 72, 126 are provided to allow the pivoting of the respective arms, and helical springs 78, 95 and 112, 130 to bias the arms against pads 38, 40 and blocks 64, 66. Pivotal adjustment may be replaced by lateral adjustment, e.g. using a housing (300), Fig. 11 (not shown). Force sensing devices (313) are joined to a band (317). An adjustment device (322) provides for vertical movement and a device (326) for horizontal movement. In another embodiment the voltage may be applied in pulses to winding 203 to eliminate the need for zero adjusting the instruments to compensate for the machine weight. The rotor and stator are not aligned until the pulsations indicated on the instruments decrease and finally the magnetic forces balance each other out. Automatic alignment may he provided using a control unit (370), Fig. 12 (not shown), to receive signals from force sensng devices (352) and transmit signals to adjustment members (360) to adjust end bells (354) and the rotor. After centring, the end bells are secured to the housing to secure the rotor within the stator using plastics material (400), Fig. 13 (not shown), epoxy resin, bolts, screws &c.
Patent GB-814029-A (GB)
Title: Improvements in nickel-chromium-cobalt alloys
Inventor: WOOD DAVID RICHARD
IPC: C22C19/00
Filed: 1956-10-29
Abstract: Alloys suitable for forming by casting parts such as turbine blades which are subjected to stress at high temperatures have compositions within the following range in per cent by weight:-Cr 7.5-15.0; Co 5.0-40.0; Ti plus Al 7.0-9.0; C 0.05-0.5; Mo 0-15.0; Si 0-0.8; Mn 0-1.0; Fe 0-10.0; Zr 0-0.2; W 0-5.0; Nb and/or Ta 0-3.0.  Ni and impurities the balance, the ratio Ti/Al being from 0.6 to 1.4.  The alloys may also include B 0.005-0.1, in which case the Ti plus Al content may be as high as 10.5. Specifications 733,489 and 737,178 are referred to.
Patent GB-1185528-A (GB)
Title: Improved Control Pulse Generator for Thyristor Converters
Inventor: BADAL JIRI
IPC: H03K3/30
Filed: 1967-07-18
Abstract: 1,185,528. Converting circuits. CKD PRAHA OBOROVY PODNIK. 18 July, 1967 [22 July, 1966], No. 32881/67. Heading H2F. A control pulse generator for a thyristor converter comprises a rectifier circuit 10, producing, at the junction of resistor 17 and Zener diode 18, a stabilized D.C. which charges capacitors 30, 31, 32 exponentially during one half cycle. During the other half cycle these capacitors discharge through diodes 21, 22, 23. The resulting sawtooth voltages across each capacitor are fed to respective transistors 33, 34, 35 where they are compared with a reference voltage developed across transistor 64. Each transistor 33, 34, 35 is connected as a blocking oscillator by transformers 39, 40, 41, and the control pulses for the thyristors are taken from windings on these transformers. The firing angle is adjusted by varying the input to transistor 64, thus varying the reference voltage. Further Zener diodes 57, 58 are provided to protect the transistors against overload.
Patent GB-686093-A (GB)
Title: Image pick-up tube
IPC: H01J31/36
Filed: 1948-12-20
Abstract: 686,093. Cathode-ray tubes. RADIO CORPORATION OF AMERICA. Dec. 20, 1948 [Dec. 20, 1947], No. 32914/48. Class 39(i) in an image pick-up tube of the low velocity beam type, the target reflects varying portions of the beam and provides scattered electrons in proportion to those landing on the target and provision is made to increase the inherent spiral motion of the beam electrons to cause the reflected electrons to spiral outside the majority of the scattered electrons in the return beam, and means are provided for selecting'the scattered electrons for the output signal. Electrons from gun G are focused and deflected by coils 36, 37 or electrostatic means and pass through lifting plates 44, 45 to the double-sided target T consisting of a semi-conducting glass 27 closely adjacent signal screen 28 and tautly across the electrode cylinder. 29. An axially adjusting compensating coil 40 is provided. Other electrodes comprise a field anode 31, a wall coating or cylinder 33, an anode ring 34 with a fine mesh screen 35 for decelerating the beam. The electron gun G is the central part of a block 20 containing an electron multiplier M and the electrons emerging therefrom are given a extra lateral velocity component by means of two small deflection plates 42 close to the gun aperture. The lifter anodes 44, 45 displace the beam before and after the low velocity scanning of the target, and the extra spiralling velocity causes separation between the reflected electrons and those scattered electrons produced by the " light'' parts of the target. A separator disc 32a with either a straight or a circular edge and integral with the persuader 31 is so positioned at an antinode of the returning spiral beam as to receive the external part of the beam which contains the reflected electrons, and allows the inner portion of scattered electrons, which is modulated by the image, to proceed through to aperture and fall on the first dynode of the multiplier M. The spiralling of the beam may also be created by disalignment of the gun or by adjustment of the alignment coil 40. The target T is made slightly positive relatively to the cathode to allow for loss of electron speed due to spiralling. The screen 35 also prevents scanning of the first dynode. In a modification (Fig. 9, not shown), the gun is mounted above the axis of the tube, and the separator disc is part of the front end of the anode cylinder, an opening for the scattered electrons being pressed out the bent metal forming the first dynode of the multiplier. The target in the tube may be single sided.
Patent GB-521226-A (GB)
Title: Improvements in casters
IPC: B60B33/00
Filed: 1938-11-12
Abstract: 521,226. Castors. BASSICK CO. Nov. 12, 1938, No. 32999. Convention date, Nov. 13, 1937. [Class 52 (i)] Castors are secured to tubular legs by compressible plugs 30 slit radially 32 at their upper ends so that on rotating the head 22 of the bolt 20 the conical wedge 33 causes'initial engagement of the upper end of the plug which causes the bottom plate 24 to be drawn upwardly against the end of the leg.
Patent GB-908067-A (GB)
Title: Dry friction sliding element
IPC: F16C33/24
Filed: 1959-09-29
Abstract: 908,067. Bearings. SAURER Ltd., ADOLPH. Sept. 29, 1959 [Dec. 24, 1958], No. 32999/59. Drawings to Specification. Class 12 (1). [Also in Group XXVI] A sliding component of graphite &c. for a bearing or seal comprises recesses in the component's surface containing a dry lubricant such as boron nitride. The nitride may be ground and mixed with a heat-resistant adhesive before insertion in slits or holes drilled in the surface.
Patent GB-1374494-A (GB)
Title: Apparatus for establishing high pressure and temperature
IPC: B01J3/06
Filed: 1972-07-15
Abstract: 1374494 High pressure apparatus INSTITUT FIZIKITVERDOGO TELA I POLUPROVODNIKOV AN BSSR 15 July 1972 33249/72 Heading B1X Apparatus for establishing high pressure and temperature comprises two identical dies adapted to be drawn together and each having on an oppositely adjacent face surface thereof, a centre recess and ridges, said recesses when said dies are being drawn mutually together forming a high pressure chamber, said ridges being disposed coaxially to said centre recesses and so arranged that said faces have in a diametrical cross-section a serrated profile, whereby said dies when being drawn together are adapted to form concentric annular locking compartments separated by said ridges, the clearances between apices of at least some of the corresponding ridges of each die successively increasing from the innermost ridge of each die towards the periphery of said dies, and the volumes of said compartments successively increasing from the innermost compartment towards the periphery of the dies so that at a given pressure in the chamber a smooth reduction of pressure exerted by a ductile material on the face surfaces is ensured towards the periphery of said dies, a container of a thermal and electrical insulating material ductile under omnidirectional pressure being enclosed in said chamber. With dies of steel and a container of lithographic store pressures of 60 kilobars and temperatures of 3000‹C may be obtained. Diamond and cubic boron nitride may be synthesised.
Patent GB-1313902-A (GB)
Title: Method and apparatus for producing flexible tubular bodies
IPC: E21B17/20
Filed: 1970-07-09
Abstract: 1313902 Making tubes; bending DES HAUTS FOURNEAUX DE LA CHIERS SA 9 July 1970 [10 July 1969] 33280/70 Headings B3A and B3E [Also in Division F2] A flexible tube is made from a metal strip 9 having an S- or Z-shaped cross-section by subjecting the strip to a permanent deformation in its own plane such that the edge of the strip which, after formation of the tube, is disposed on the outside of the tube is longer than the edge of the strip, which after formation of the tube, is disposed on the inside of the latter, and helically deforming the strip so that the different coils resiliently engage one another. A plastic tube 2 is unwound from a reel 1 mounted on a frame 3 which is rotated about a horizontal axis. The strip 9 of high strength steel is unwound from a reel 10 by two pairs of rollers 11 and then passed over rollers 13 and 26 which deform the strip into a curve, Fig. 6, so that a helical winding would be effected in the direction F 1 . However the strip is wound on to the rotating tube 2 so that the helical turns are guided in a direction opposite to F 1  by fingers 40 mounted on a plate 27 thus allowing the coils to press resiliently against each other. The plate 27 is adjustable in the horizontal and vertical planes by screws 31 and 35 sliding in grooves 32 and 34 respectively. The formed tube then passes through a rotating feed head 14 and is finally wound on a reel 4 driven by a motor 7 and mounted on a frame 6 rotating about the horizontal axis.
Patent GB-1104285-A (GB)
Title: Steam reforming of hydrocarbons
Inventor: TAYLOR ALAN SCOTT
IPC: C01B3/40
Filed: 1964-08-14
Abstract: Hydrocarbons boiling at up to 350 DEG  C. are reacted with steam at an elevated temperature in the presence of a catalyst comprising an alloy of (1) a base metal which is one or more Ni, Co, Cr and Mo with (2) Al, Mg or Zn, the alloy having been treated with a reagent which reacts with (2) but not substantially with (1) so that (2) is preferentially removed from the surface of the catalyst, and thereafter treating with alkali hydroxide solution such that the product catalyst contains alkali to the extent of at least 0.1% calculated as K2O.  Examples describe the production of combustible gases from steam reforming naphtha at e.g. 500-800 DEG  C. Data for product gas composition and calorific values are mentioned.ALSO:Reforming catalysts are made by treating an alloy containing one or more of Ni, Co, Cr, and Mo with an additional metal selected from Al, Mg and Zu, with a reagent which reacts with the additional metal but not substantially with the base metal, so that the additional metal is at least partially removed from a surface layer of the alloy, leaving a surface layer at least partially free from additional metal, and treating with an alkali hydroxide solution so that the product contains at least 0.1% K2o or equivalent.  The reagent may itself be NaOH.  When the additional metal is Zu or Mg the reagent may be a dilute acid, e.g. H.COOH or HCl.  The catalyst may be sprayed onto the walls of a reaction vessel or prepared as crushed pieces or shaped bodies.
Patent GB-807742-A (GB)
Title: A flow governor for maintaining the flow of a gaseous medium at a pre-selected value
IPC: F24F11/75
Filed: 1956-11-01
Abstract: 807,742. Valves. SVENSKA FLAKTFABRIKEN A.B. Nov. 1, 1956 [Nov. 2, 1955], No. 33380/56. Class 135. A flow governor for maintaining the flow of a gaseous medium at a preselected value comprises a cylindrical casing 2 with diametrically opposed inlet and outlet 3 and 4 respectively and a rotatable throttling means 5 concentrically journalled within the casing by means of two stub shafts 6 and 7. The throttling means has an arcuate throttling member provided with a cam-shaped member 8 on its effective throttling edge which varies the outlet opening 4. A flat spiral spring 9 has one end fastened to the throttling means at 14 and its other end to end 15a of a lever 15 which is journalled about the shaft 6. In operation the lever 15 is set to a predetermined position according to the flow rate required, this locates the position of the throttling means via the action of spring 9 and any differing pressures then occurring on the two sides of the cam-shaped member 8 cause a resultant pressure tending to open or close the throttling member to maintain the preselected flow rate through the outlet. The cam-shaped member 8 may be made of a porous sounddeadening material, and further sound damping may be provided by placing a disc 11 and a plurality of metal balls 13 between the two spaced walls 10, 12 at one end of the throttling means. Ribs 16, 17 and 18, 19 are provided for securing the casing 2 in a suitable ducting.
Patent GB-772589-A (GB)
Title: Reciprocatable saw blade
IPC: B27B33/02
Filed: 1955-11-22
Abstract: 772,589. Sawing. WRIGHT, J. W.- Nov. 22, 1955 [Dec. 9, 1954], No. 33481/55. Class 145  A reciprocating saw blade 14, particularly, for a high-speed short-stroke power saw as described in Specification 772,079, has alternate teeth 10, 11 laterally offset to opposite sides, offset roots 12, 13 joining the teeth to the blade, a vertical leading face 15 on each tooth and a bevelled rear face 17 extending upwardly and rearwardly from each leading face to form a cutting edge 18 and cutting point 19. The bottom clearance angle c is of the order of 45 degrees, the bevel angle d is of the order of 45 to 50 degrees and an upward relief angle a and a rearward relief angle, both of the order of two degrees, are provided on the outer side of the face 15; the spacing of the teeth is about half the cutting stroke of the blade. On the return stroke of the blade, the sawdust is moved by the bevel face 17 over to the opposite side of the kerf and is by-passed by the teeth while, on the forward stroke, the face 15 pushes the sawdust forwardly so that it is progressively moved out of the forward end of the kerf; the vertical face 15 may be raked outwardly by about 25 to 30 degrees to pocket the sawdust against the side of the kerf and to facilitate its forward movement.
Patent GB-1270843-A (GB)
Title: Nitrofuran derivatives
IPC: A61K31/33
Filed: 1969-07-02
Abstract: 1,270,843. Nitrofuran derivatives. ETABS CLIN-BYLA. 2 July, 1969 [5 July, 1968], No. 33491/69. Heading C2C. The invention comprises compounds of the Formula I in which n is 1 or 2, R<SP>1</SP> is H or C 1-4  alkyl and R<SP>2</SP> is H or -CONHA, A being alkyl, alkenyl, aryl, haloaryl, alkanoyl, haloalkanoyl, aroyl or haloaroyl. Compounds of the Formula I in which R<SP>2</SP> is H are prepared by reacting (5-nitro-2- furyl)acrolein with a compound of the Formula II Compounds of the Formula I in which R<SP>2</SP> is -CONHA are prepared by reacting compounds of the Formula I in which R<SP>2</SP> is H with isocyanates of the formula A-NCO. Antibacterial compositions for use in human and veterinary medicine, for disinfectant compositions and for sterilizing instruments comprise, as active ingredient, a compound of the Formula I, together with a carrier. The active ingredients may be incorporated in tablets or ointments or added to animal feedstuffs.
Patent GB-451823-A (GB)
Title: Improved corrosion resistant alloys
IPC: C22C19/00
Filed: 1935-12-03
Abstract: Alloys particularly suitable for making pen nibs, chemical apparatus, reflectors, electrodes, and for dental and other purposes consist of nickel and 25-80 per cent of rhodium.  Part of the rhodium may be replaced by up to 20 per cent of platinum or iridium, subject to there being at least 10 atomic per cent of rhodium and at least 20 atomic per cent of rhodium, platinum, and iridium present, and part of the nickel may be replaced by up to 55 per cent of palladium, up to 10 per cent of molybdenum or tungsten, or up to 20 per cent of copper, iron, or cobalt.  In making the alloys, a scavenging element such as magnesium, zinc, manganese, silicon, boron, barium, calcium, titanium, or zirconium may be added in such amount as to leave up to 0,2 per cent of such element in the finished product.  The rhodium used may be purified by melting it in a carbon-free crucible and subjecting it to alternate reduction and oxidation.
Patent GB-1496280-A (GB)
Title: Method of production of acrylic resin for film use and an acrylic resin obtained therefrom
IPC: C08F265/00
Filed: 1975-08-12
Abstract: 1496280 Graft polymerization process KANEGAFUCHI KAGAKU KOGYO KK 12 Aug 1975 [23 Aug 1974] 33561/75 Heading C3G A cored-particle resin is produced by graft polymerizing 90 to more than 50 parts by weight of a monomer for a resin component B on to 10 to less than 50 parts of a cross-linked elastomer component A in the state of an emulsion having a gel content of more than 60%, a degree of swelling of less than 15 and a mean particle size of 500 to 2000Š, the degree of grafting being more than 30%, A being prepared by copolymerization of a cross-linking monomer with a monomer or monomers consisting of 100 to 70% by weight of C 1  to C 8 -alkyl ester, 0 to 30% C 1  to C 4 -alkyl methacrylate and 0 to 20% of other ethylenically unsaturated monomer and resin B being prepared from a monomer or monomers consisting of 100 to 60% by weight of C 1  to C 4 -alkyl methacrylate, 0 to 30% of C 1  to C 8 -alkyl acrylate and 0 to 10% of other ethylenically unsaturated monomer. Examples are given in which (a) n-butyl acrylate and methyl methacrylate are copolymerized with triallylisocyanurate, diallylphthalate, allyl-methacrylate, tetraethylene glycol dimethacrylate, allyl maleate, tetraethylene glycol dimethacrylate or divinyl benzene and the resulting elastomer is grafted with methyl methacrylate and n-butyl acrylate; (b) n-butyl acrylate is copolymerized with triallyl isocyanurate and the resulting elastomer is grafted as in (a); (c) n-butyl acrylate, methyl methacrylate and triallyl isocyanurate are copolymerized and the resulting elastomer is grafted with methyl methacrylate and 2-ethylhexyl acrylate and (d) ethyl acrylate, methyl methacrylate and triallyl isocyanurate are copolymerized and the resulting copolymer is grafted with methyl methacrylate and n-butyl acrylate.
Patent GB-1293107-A (GB)
Title: Variable resistor having an improved wiper member
IPC: H01C10/32
Filed: 1971-07-19
Abstract: 1293107 Variable resistors SPECTROL ELECTRONICS CORP 19 July 1971 [25 Feb 1971] 33753/71 Heading H1S A variable resistor 10 comprises an alumina substrate 13 having disposed on a flat surface thereof a cermet resistance element 20 and a conductive collector element 25; and a wiper member 12 consisting of a resilient pad 40 secured to a rigid carrier 30 by adhesive 43 and having secured thereto a wiper contact element 45 which consists of a bar of flexibly bonded metal particles. The substrate 13 and carrier member 12 are secured in a housing 11 by a potting agent 50 so that the resilient pad 40 is compressed to urge the contact element 45 into contact with both the resistance and collector elements. Conductive terminations (21), (22) (Fig. 3, not shown) may be provided on the resistance element for connection to terminals 15, 16. A third terminal 14 connects with the collector element by passing through a hole 27 in the substrate 13; the carrier 30 being adjustable in position to vary the resistance between terminal 14 and terminals 15, 16. A lubricant may be provided between the pad 40 and the substrate 13. The pad 40 may be of silicone rubber, felt, polyurethane foam or neoprene and the flexible contact 45 may be of epoxy plastics filled with silver particles or of conductive ink.
Patent GB-282398-A (GB)
Title: Improvements in electric remote-control apparatus for stop valves
IPC: F16K31/04
Filed: 1927-12-14
Abstract: 282,398. Fabrique d'Appareils Electriques F. Sauter Soc. Anon. Dec. 18, 1926, [Convention date]. Electrically-actuated valves.-In an electric motor operated valve arrangement having a remote control by hand, thermal or fluid pressure means, or clockwork, for use for example in refrigerating apparatus, the electric motor B, Figs. 1 and 4, which is arranged to rotate alternately forwards and backwards, is coupled to an intermediate shaft b which drives the valve through a spring c under tension so as to give a yielding closing action and so that when the valve A is closed a reversing switch H is actuated to prepare a circuit in readiness for the opening of the valve by reversal of the motor. Referring to the schematic arrangement shown, when the switch G, which is controlled manually, or automatically by temperature or pressure changes, or by clockwork, closes the contact g, electric current will flow from the supply terminal x through the arms h<1>, h<2> of the triple-armed reversing switch H to the motor armature 2, 3, 4 and thence through the third arm h<3> and field winding 5, 6, to the supply terminal y. The motor then rotates shaft b and by means of the spiral spring c, disposed in casing C, and the finger coupling e rotates and closes the valve. A slight further movement of the motor causes the stop arm f to leave the stop f<1> and further tension the spiral spring c; at this moment a controlling arm I connected to the shaft b by gearing k, k<1>, k<2>, effects the reversal of the switch H which breaks the motor circuit, When, now, the switch G closes the other contact g<1>, current from terminal x passes to the motor armature but in the reverse direction so that the motor is reversed for opening the valve until the control arm I again reverses the switch H to stop the movement, and re-set the circuits for the next closing movement of the valve. The reversing switch H is removable from the casing K, and also has an additional lever h<4> controlling a circuit provided with a signal lamp w<1> indicating the position of the valve. The valve A is suspended by brackets n from the casing K.