baber/WOPTO huggingface dataset:
Patent GB-1262069-A (GB)
Title: Crust breakers for electrolysis cells
IPC: B02C1/00
Filed: 1970-10-23
Abstract: 1,262,069. Crust breakers; charging electrolytic furnaces. SWISS ALUMINIUM Ltd. 23 Oct., 1970 [24 Oct., 1969], No. 50525/70. Heading F4B. A crust breaker for an electrolytic furnace producing aluminium comprises one of a pair of trolley carriages 57 mounted on a semi-portal crane 10 and having an impact beam 92 hinged thereto, a tool assembly 74 with impact tool 75 mounted in a bracket 84 hinged to the beam 92, a pneumatic motor 77 incorporating a stroke adjustment device 76 mounted on the carriage 57 and adapted to swing the beam and thus drive the impact tool 75, and a pneumatic control device 86 coupled to the bracket 84 which determines and controls the force necessary to swing the tool assembly 74 about the axle 85, Fig. 8, in a direction perpendicular to the longitudinal axis of the furnace. The control device 86 comprises a pneumatic motor 87 subject to pressure at 90 from a solenoid air valve 94, locking the tool 75 by a limit stop 102 on the bracket 84. Only if a lateral force on the tool exceeds the pressure in the space 90 will the tool be deflected. In the above position space 91 is connected to atmosphere through space 101 in said valve 94. When the tool 75 strikes the crust a signal energizes the solenoid 96 moving piston 97 across and allowing access of air to space 91 in motor 87. This reduces considerably the latera force necessary to move the tool 75 laterally preventing damage thereto during the picking operation. A torsion device 139 (detailed in Figs. 10 and 11) allows the tool 75 to deflect in the longitudinal direction of the furnace. Charging.-On the crane bridge 38 is an alumina hopper 42 with aerating bottom plates 46 whereby the alumina is fluidized before feeding through a delivery device 49 associated with each carriage 57. The delivery device 49 comprises a slide valve 50 opening into a rotary pocketed valve 51 (Fig. 6) and compressed air operated obturators 53 serving discharge pipes 54 on either side of the impact tool 75. Also on either side of the tool 75 are scraping devices 113 described in Specification 1,262,068 for distributing the alumina over the bath. Driving gear.-Longitudinal movement of the crane is by carriages 12 on rails 11 driven by motors 14 through gearing 15 and wheels 16. The opposite side of the crane bridge 38 is supported by an undriven carriage 13 including a parallelogram frame 29, 30, 33 incorporating springs 31, 32. Transverse movements of the trolley carriages 57 are by motors 59 actuating wheels 58 on rails 56, lower stabilizing rollers 61 engaging rails 64 and being provided with rocking levers 62 and tension springs 63. A travel programme transmitter (66, Fig. 1) and a furnace programme transmitter (68, Fig. 1) are among the devices ensuring automatic control and sequential operation of the charging crust breaker.
Patent GB-1351661-A (GB)
Title: Drawing tables
IPC: A47B27/18
Filed: 1971-11-01
Abstract: 1351661 Drawing tables C SAUTEREAU 1 Nov 1971 [3 Nov 1970 21 Sept 1971] 50702/71 Heading A4H A drawing table comprises a column 5, Fig. 11, fixed on a desk 2, a shaft 4, Fig. 14, (not shown) that telescopes in column 5, a support arm 21 carried by shaft 4 and pivoted at one end about the column axis 12, and a drawing board 1 pivoted to the other end of arm 21 about a second vertical axis 22 by a hand lever 23. In one form Fig. 14, (not shown), the height of the board is adjusted by a motor (7) and transmission (8), a compensating pneumatic spring (6) being provided. A hand wheel or lever (18) locks the arm 21 at the desired orientation about axis 12. Alternatively or additionally, see Fig. 19, the board is locked at the desired height by a nut 34 mounted in shaft 4 engaging a rod 32 with a triangular thread carried by column 5, the nut engaging the rod under the action of a spring 39. This locking device is released by a Bowden cable 35, a handle (44), Fig. 23, (not shown), connected to the cable inner member having a sleeve (41) with lugs (42) slideable in grooves (43) in the lower edge of the board. Alternatively, the rotary movement of arm 21 about the axis 12 may be arrested by alternate friction discs 53, 54, Fig. 25, mounted on a spindle 13 of shaft 4 by plates 55 and screws 56 and on arm 21 by a screw 57 respectively, screw 57 tightening the discs 53, 54. The board can be arrested at the desired inclination about the axis of a horizontal shaft 24, Fig. 27, by alternate friction discs 61, 62 tightened by a ring 71 axially slideable on shaft 24 and in which a shaft 72 having an eccentric 73 is pivotable about its own axis. Eccentric 73 is connected by a crank arm 74 to an eccentric 75 of a shaft 76 pivotable about its own axis at the end of shaft 24, and actuated by a hand lever 77. Desk 2 is provided with a ballast weight 3, Fig. 11. Alternatively, arm 21 may be pivoted to a vertical post that has a laterally offset base or that is mounted in the ground. The arm 21 can be adjusted into a horizontal position by threaded pins (46), Fig. 24, (not shown).
Patent GB-1021130-A (GB)
Title: Infinitely variable transmission
IPC: F16H15/50
Filed: 1964-12-14
Abstract: 1,021,130. Variable-speed gears. FORD MOTOR CO. Ltd. Dec. 14, 1964 [Dec. 30, 1963], No. 50755/64. Heading F2D. A split-torque drive from an input shaft 16 to an output shaft 40, re-combined in a threeelement toothed planet train 34, comprises one power path through an input-driven fluid coupling 18, 20 to a sun 32, and a second path including an input-driven steplessly-variable planetary friction gear 66 driving a planetcarrier 46. For reverse the planet-carrier 46 is held by a fluid pressure-applied brake 132, the whole of the torque then passing through the fluid coupling, the friction gear being inoperative. Friction, gear.-Ovoid planetary rollers 74 rotate freely in split cages 76, 78, Fig. 3 (not shown), radially slidable in a ring 88 forming part of an output sleeve 129 secured to the planet carrier 46 of the torque-combining train. The rollers frictionally engage a driving (or stationary) splined inner race-pair 62, 64 rotating with the input impeller 18, and a normally stationary (or driving) splined outer race-pair 68, 70, which can be released for neutral, or can be held by brake surfaces 112, 124 loaded by a piston 116, which also provides traction pressure. The radial position of the rollers, and hence the speed ratio (always reduction), is controlled by fluid pressure, sensitive to output speed and engine torque-demand (not described), acting on a piston 92 which axially loads one inner race 62. An inputdriven pump 60 supplies fluid pressure.
Patent GB-1485390-A (GB)
Title: Propulsion means for an aircraft
IPC: B64D27/24
Filed: 1974-11-25
Abstract: 1485390 Aircraft propulsion means A KLING 25 Nov 1974 [12 Dec 1973 29 April 1974] 50936/74 Headings B7G and B7W A propulsion means for aircraft and in particular a lifting rotor for a helicopter, which may be free-flying or tethered to provide a platform for instruments, comprises contrarotating concentrically arranged rotors driven by electric motors in which the rotating and stator polepieces form part of the rotors and fuselage or support platform respectively. A cabin or platform 32 is suspended about mutually perpendicular pivotal axes by means of a ring 33 and a hoop 1 rigidly connected to a shell 31 and two co-planar concentric contrarotating rotors 29, 30 are mounted for rotation about hoop 1. The rotor 29 comprises blades carried by a ring 19 on which are mounted a plurality of fittings 6 supported by bearings 9 on matching fittings 3 carried by hoop 1. The rotor 30 comprises blades attached by arms 27 and 28 and rings 18 and 20 to vertically spaced fittings 5 and 7 also mounted by bearings 9 and further matching fittings 2 and 4. Opposed faces of fittings 5 and 6 carrying electromagnetic polepieces 10 and 11 respectively and similar polepieces 12 and 13 are mounted on the opposed faces of fittings 6 and 7 and the matching polepieces function as stator and rotor to cause rotation of the rotors 29 and 30 in opposite directions. A residual torque resulting from frictional resistance in bearings 9 is resisted by the provision of electromagnets 14, 16 and 15, 17 which react with the adjoining poles 12, 13. Other arrangements of mountings and polepieces for co-planar coaxial contra-rotating rotors are described.
Patent GB-1180922-A (GB)
Title: Separation Procedure.
Inventor: SHERRINGTON LEONARD GEORGE
IPC: C01F17/17
Filed: 1966-02-04
Abstract: 1,180,922. Rare earth separation. THORIUM Ltd. 19 Jan., 1967 [4 Feb., 1966], No. 51035/69. Divided out of 1,180,921. Heading C1A. A batch method for separating a rare-earth from an initial mixture of rare earths comprises: (a) dissolving the initial mixture in at least one solvent of two at least partially miscible solvents, one of said solvents containing a tertiary branched chain carboxylic acid branched at the C-atom adjacent the COOH group; (b) processing the resulting solution or solutions in counter-current in a multi-stage liquid/liquid extraction system, returning any solutes leaving each end of the system to that end of the system from which they were derived; (c) stopping the flow of both counter-currently flowing solvents when a sufficient separation has been achieved, and recovering the desired rare earth from the unit or units of the multi-stage system that contain it in the desired purity. The solvent not containing the tertiary carboxylic acid may be an aqueous mineral acid. In examples, yttrium (defined as a rare earth metal) is separated by counter-current extraction of a solution of rare earths in aqueous nitric acid and a solution (obtained from the rare earths via-the nitrates) of rare earth metal ions in a hydrocarbon containing tertiary carboxylic acids. Reference is made to Specificaton 1,026,791 which explains the concept of "total reflux" by which the process is operated. The parent Specification discloses a 2-stage process, using "total reflux", for separating yttrium from lanthanide rare earth elements.
Patent GB-1437247-A (GB)
Title: Commutator grinder
IPC: H02K13/00
Filed: 1973-11-08
Abstract: 1437247 Grinding commutators SANWA KIKO KK 8 Nov 1973 [4 June 1973] 51795/73 Heading B3D  A grinder for mounting on a machine 45 for grinding a commutator 46 in situ comprises a sleeve 12 adapted to slidably receive a first support rod 11 carrying a block of abrasive material 10, infeed means 13 for moving the first support rod relative to the sleeve to infeed the block with respect to the commutator, a second support rod 36 coupled to the sleeve 12 at right angles thereto, a hollow arm 14 adapted to slidably receive the second support rod, traverse feed means 17 for moving the second support rod relative to the arm and traverse the block 10 with respect to the commutator, and a standard 16 coupled at its upper end to the arm 14 and having electromagnetic means 18 for releasably attaching the grinder to the machine 45. The block 10 is secured by a pair of plates 21 and bolts 22 to the lower end of the first support rod 11 with a block of wood 24 interposed therebetween to cushion vibrations. The support rod 11 is keyed to the sleeve 12 and has an internal screw thread engaged by a screw thread on a rod (29, Fig. 2, not shown) secured to a worm wheel 27 engaged by a worm rotatable by the infeed handle 13. The second support rod 36 is secured by a flange 42 to the sleeve 12, is keyed to the arm 14, and has an internal screw thread engaged by a screw on a rod of the traverse handle 17. The standard 16 is secured by an adjustable clamp 15 to the arm 14 and has an adjustable clamp 19 carrying the electromagnetic means 18 for releasably securing the grinder to an end plate 44 of the machine 45, such as an electric motor or generator, the commutator 45 of which is to be ground. Rotation of handle 13 feeds the block towards and away from the commutator while rotation of handle 17 in opposite directions traverses the block to and fro along the commutator.
Patent GB-1372904-A (GB)
Title: Sealing device
IPC: F16J15/40
Filed: 1972-11-09
Abstract: 1372904 Seals FORSHEDA IDEUTVECKLING AB 9 Nov 1972 [9 Nov 1971] 51798/72 Heading F2B A seal arrangement, e.g. for a fixed shaft 11 passing through a flange 14 on a rotatable wall 12 comprises a sealing element 13 borne by one member 14 to be sealed and means for applying fluid at a higher pressure than that of the medium to be sealed to between the element 13 and the other member 11 to be sealed, the sealing element 13 being deformable to allow the applied fluid to flow between the element 13 and member 11. Pressure, e.g. of air, water or oil, applied through a channel 15 to an interface 16, Fig. 1, between the members 11, 13 lifts the element 13 from the shaft 11, the resultant clearance space leading to substantially frictionless sealing. Alternatively, Fig. 2, pressure through channels 25a, 25b in a wall 22 and sealing sleeve 23 may lift the sleeve 23 from the shaft 21, during rotation, while pressure applied through passages 210a, 210b from a space 28 being sealed urges the sleeve 23 against the shaft 21 for stationary sealing. Further, Fig. 3, a rubber sleeve 33 within a groove 34 may be pressurized through channels 35a, 35b for rotary sealing, a channel 310a connecting a pressure space 34 to the medium within a space 38 to be sealed. Also, Fig. 6, a generally X-sectioned ring 63 may be provided, pressurized for rotary sealing through channels 65a, 65b, while a pasage 610 allows the pressure medium being sealed to act symmetrically on the ring 63.  As a further alternative, Fig. 7, two rings 73a, 73b may be provided with a pressurizing channel 75 between them, or a series of 0-rings may be provided, Fig. 8.
Patent GB-1130958-A (GB)
Title: Material tester
IPC: G01N29/11
Filed: 1966-11-18
Abstract: 1,130,958. Ultrasonic inspection devices. AUTOMATION INDUSTRIES Inc. 18 Nov., 1966 [22 Nov., 1965], No. 51827/66. Heading H4D. The attenuation of ultrasonic energy by a workpiece, and hence an indication of the internal structure of the workpiece, is obtained by comparing the amplitudes of two portions of a signal received after passage through the workpiece. In the Fig. 1 embodiment two of the multiple-reflection echoes received from workpiece 12 in response to each transmitted pulse from transducer 20 are selected by respective gating circuits 26, 28, and lengthened in pulsestretching circuits 56, 54. The ratio of their amplitudes is then determined and a ratio signal (indicative of the attenuation) is applied to indicator 48. The ratio signal may be weighted by means of divider circuit 60 to allow for workpiece thickness so that the indication is given directly in e.g. decibels per inch. Automatic gain control (A.G.C.) may be used to maintain the amplitude of the selected echo from gate 26 constant. In a modification, if the A.G.C. maintains a sufficiently constant amplitude, the amplitude of the other selected echo is read directly to indicate attenuation.
Patent GB-1285981-A (GB)
Title: Control arrangement for a plurality of slide projectors
IPC: G03B31/06
Filed: 1969-10-23
Abstract: 1285981 Slide projectors BRAUN A G 23 Oct 1969 [26 Oct 1968] 51922/69 Headings G2A and G3N Slide changes are made in selected projectors 1 to 8 in response to pulses from a pulse generator 76 (which may be a tape recorder - optionally carrying a sound track as well - or a manual key). The pulses initiate programmes which are either manually selected by switches 17 to 24 or automatically selected by switches 47 to 54. Manual selection. Switch contacts 26 and 26.1 are connected, and selected switches 17 to 24 are manually closed. A pulse from generator 76 energizes a relay 31 which closes a switch 31.1 connecting projector terminals 11 to terminals 12 via the selected switches 17 to 24 to initiate slide changes. Automatic selection. Switch contacts 26 and 26.2 are connected and selected switches 47 to 54 are closed by a punched tape, Figs.3, 4 (not shown). A pulse from generator 76 energizes relay 31 closing switch 31.1 to connect projector terminals 11 and 12 via the selected switches 47 to 54 to initiate slide changes. A relay 32 controls magazine movement and when punched tape is used, relays 31, 33 control an electro-magnetic brake 64 for the punched tape feed.
Patent GB-1408599-A (GB)
Title: Machine for processing a moving web and having a monitoring  arrangement for detecting web rupture
IPC: B41F33/18
Filed: 1972-11-10
Abstract: 1408599 Web detectors MASCHINENFABRIK AUGSBURG-NURNBERG AG 10 Nov 1972 [13 Nov 1971] 52134/72 Heading B8R A rotary printing press having a pair of blanket cylinders 1, 2, Fig. 1, printing both sides of a web 3 is provided behind the blanket cylinders with a web break detector disposed on each side of the web and externally of the longitudinal edges of the web and formed by two photo-electric sensors 6, 7 each sensor comprising a pair of light sources 10, 10<SP>1</SP> and a pair of photo-electric cells 11, 11<SP>1</SP>, the beams from the sources 10, 10<SP>1</SP>, Fig. 2, being inclined at different small angles with respect to the plane of the web so that they intersect each other. The sensors may be mounted on adjustable brackets 8, 9 bolted to a machine frame 15 by means of slots 12, 13 and screws (not shown). The planes of the crossing beams may be inclined at any angle in the web plane.
Patent GB-1494340-A (GB)
Title: Process for preparation of substituted n-phenylcarbamate esters
IPC: C07C239/00
Filed: 1974-12-03
Abstract: 1494340 Alkyl or aralkyl N-[2-aroylphenyl]- carbamates JOHN WYETH & BRO Ltd 3 Dec 1975 [3 Dec 1974] 52244/74 Heading C2C The invention comprises (a) a process for the preparation of alkyl or aralkyl N-[2-aroylphenyl]-carbamates by reacting a 3-aryl-2- indolinone with molecular O 2  in the presence of an alkali metal alkoxide or aralkoxide, (b) compounds of the formula wherein R is C 1 -C 6  alkyl or aryl (C 1 -C 6 ) alkyl, which may be obtained by the process given in (a) and (c) a process for the preparation of a compound of the formula by hydrolysing a compound of Formula IV above. Compounds of Formula VI are useful intermediates in the preparation of 5-aryl- 1,4-benzodiazepines. 3-Aryl-2-indolinones of the formula wherein R<SP>1</SP> is H or (C 1 -C 6 ) alkyl, R<SP>2</SP> and R<SP>3</SP> are each H, halogen (C 1 -C 6 ) alkyl or alkoxy, nitro, (C 1 -C 6 ) alkylsulphonyl or alkylthio, or trihaloalkyl, and when taken together R<SP>2</SP> and R<SP>3</SP> are -OCH 2 O-, Ar is aryl which may be substituted or unsubstituted, may be obtained by condensing an aniline of the formula with a hydroxy-acid of formula to give a compound of formula and cyclizing the compound of Formula VII in the presence of an acid.
Patent GB-1473009-A (GB)
Title: Nuclear reactor
IPC: G21C7/08
Filed: 1974-12-04
Abstract: 1473009 Controlling nuclear reactors COMMISSARIAT A L'ENERGIE ATOMIQUE 4 Dec 1974 [14 Dec 1973] 52470/74 Heading G6C The invention concerns an arrangement for guiding control rods of e.g. a pressurized water reactor, in which each rod (Fig. 1, not shown) comprises a multiplicity of absorber pins (2) whose upper extremities are connected by radial spiders (6) to a common, central stem (4). The guiding arrangement comprises (Fig. 3) a rigid top plate 16 supported, at its periphery, against the reactor vessel, a plurality of relatively long vertical tubes 22, an intermediate plate 20, relatively short tubes 28 and a bottom plate 27 (which forms the top plate of the reactor core). Each long tube 22 is of sufficiently large diameter to contain an entire control rod; its upper end is secured to the top plate 16 opposite a respective aperture 24 therein and its lower end is secured to the intermediate plate 20 opposite a plurality of apertures 32 therein equal in number to the number of pins provided on the control rod. The intermediate plate 20 lies below the level of coolant outputs from the reactor vessel. The short tubes 28 each lie in alignment with aligned apertures 32, 40 in the intermediate and bottom plates 20, 27 so that each tube 28 encompasses a single pin of the associated control rod. Both intermediate and bottom plates 20, 27 are provided with further apertures 34, 42 for coolant flow. The short tubes 28 may be sufficiently rigid to afford the sole mechanical connection between the intermediate and bottom plates 20, 27 but, alternatively, are relatively thin-walled and the mechanical connection is afforded otherwise (Fig. 5, not shown).  Further guidance of a control rod within each long tube 22 is afforded by an arrangement of vertically-spaced guide plates 44 (Fig. 4) within the long tube; each plate 44 comprises smalldiameter apertures 46 for passage of the absorber pins 2, a larger central aperture 48 for passage of the central stem 4 and radial slots 50 connecting the larger and smaller apertures and for passage of the spider 6.
Patent GB-1369691-A (GB)
Title: Machine tools
IPC: B24B41/06
Filed: 1971-11-11
Abstract: 1369691 Workrests LITTON INDUSTRIES Inc 11 Nov 1971 [16 Dec 1970] 52508/71 Headings B3D and B3T A workrest 14, e.g. for supporting a workpiece W being ground comprises shoes 21, 28 supported on respective pivotally mounted arms 23, 29 and means 65 for individually controlling the positions of the arms 23, 29. The arm 23 is pivotable on a pin 27 on a base 16, a spring 46 urging it against an adjustable screw 33 of a plunger 32, operable to engage the shoe 21 with the workpiece W. The arm 29; pivotable on a pin 28, is held against a spreader 36 by a spring 42, the spreader 36 being pivotable on a further plunger 34 for urging the shoe 28 against the workpiece W by forcing apart camming surfaces 38, 39 engaging the head 37 of the spreader 36. A member 31 bearing the shoe 28 is slidably adjustable on a rail 26 of the arm 29 in accordance with workpiece size. The plungers 32, 34 are movable by similar cam means 52, Fig. 4, supported for movement in housings 49 by hydraulic pressure. To raise the cams 52 to correspond with an initial retracted position of the shoes 21, 28, pressure is applied through lines 51 to pistons 53, the cam rise being limited by adjustment screws 58. Engagement with the workpiece is effected by pressure through lines 51A, urging upper pistons 54 downwards to an extent limited by stops 68, adjustable by means of cams 59 having micrometer setting mechanisms 65 to compensate for shoe wear. A series of workrests 14 may be spaced along the base 16.
Patent GB-1206625-A (GB)
Title: Electrostatic image development
IPC: G03G15/08
Filed: 1967-11-22
Abstract: 1,206,625. Developing electrostatic images . RANK XEROX Ltd. Nov. 22, 1967 [Nov. 25, 1966], No. 53045/67. Heading G2H. A latent electrostatic image on rotating drum 10 is developed by cascading a two component developer through a channel 18 defined by the drum 10 and a surface 19 of a development electrode 20. The electrode extends through zones A and B having angles # 1  and # 2  respectively. The portion of electrode 20 in zone A comprises any solid, foraminous, or slotted network e.g. wires or screens of conductable material, while the portion in zone B is impervious to carrier particles. A potential 33 of the order of 50 to 200 volts above the image background potential is applied to the electrode. The angles # 1  and # 2  are about 40 to 50 degrees. In another embodiment, Fig. 2 (not shown) the latent image is formed on an endless belt 50.
Patent GB-1476600-A (GB)
Title: Mixed vanadium and phosphorus oxide catalysts
IPC: C07D307/60
Filed: 1975-12-30
Abstract: 1476600 Maleic anhydride LONZA Ltd 30 Dec 1975 [10 Jan 1975] 53131/75 Heading C2C [Also in Division B1] Maleic anhydride is produced by the oxidation of a saturated or unsaturated C 4  hydrocarbon in the gaseous phase using a mixed oxide oxidation catalyst based on vanadium and pentavalent phosphorus with an atomic ratio of P : V of 1À05-1À10 : 1 and prepared by reacting a salt of tetravalent vanadium with orthophosphoric acid (see Division B1). The hydrocarbon may be n-butane oxidized at 320-500‹ C.