baber/WOPTO huggingface dataset:
Patent GB-1186395-A (GB)
Title: Improvements in Continuous Casting of Melts
Inventor: HANAS BERTIL
IPC: B22D11/18
Filed: 1967-04-06
Abstract: 1,186,395. Continuous casting. ALLMANNA SVENSKA ELEKTRISKA A.B. 6 April, 1967 [7 April, 1966], No. 15866/67. Heading B3F. [Also in Division G3] To maintain the melt level in a continuous casting mould 19, the flow rate of molten metal into the mould, from a controllable outlet 13 from a transporter ladle 11 or furnace by way of a tundish 16, ladle or other intermediate vessel, is regulated automatically (e.g. by a control amplifier 27) according to electrical signals, from both a melt level indicator (e.g. a gamma-ray system 20-22) at the mould and an indicator 18 at the tundish &c. vessel responding to the melt level or to the weight of the vessel and its contents. The teeming outlet 13 may be controlled by a stopper rod or by a stop-valve 14 operated through an hydraulic or electric motor 15. The outlet 17 from the tundish 16 may have similar obturating means but manually-operated. The indicator 18 may indicate weight electrically, electronically or mechanically and include a magnetostrictive emitter or it may indicate the melt level by means of a thermoelectric element or photo-cell. The level in the copper mould 19 may be indicated by temperatureresponsive elements or thermoelectric probes (29) instead of the gamma-ray system 20-22.
Patent GB-1355293-A (GB)
Title: Alternating current logic control system
IPC: H03K19/003
Filed: 1972-04-06
Abstract: 1355293 Transistor AC logic circuits LA SALLE MACHINE TOOL Inc 6 April 1972 [26 July 1971] 15991/72 Heading H3T An A.C. logic arrangement contains two logic circuits 1, 6 in series. In the logic circuit 1 operating from an A.C. supply L1, L2 two inputs such as closure of switches 24, 26 cause, by reverse-biasing of D54, a reduction in voltage across R36, which causes T34, T72 to turn on during the time that L1 is negative with respect to L2, conduction being maintained, even if switch 24 opens, by a latching feedback from output 2 to an input 4, and capacitor 68 holding the transistors conductive during the opposite half cycles of the supply. Two further input switches also operating in AND fashion control the current in another resistor 38, and a single input switch controls R40, the resistors 36, 38, 40 being connected in OR fashion through respective diodes to T34 base. T34 emitter is fed from an autotransformer 33 giving a reference voltage LR1. The output 2 when coincident with operation of another switch 32, turns on T102 in the second logic circuit 6 provided again that L1 is lower than L2. T102, receiving emitter bias from another autotransformer 35, drives a relay coil 104, the contacts 114 energizing a triac circuit 116 to drive a load 13. Capacitor 106 keeps coil 104 energized during opposite half cycles.
Patent GB-718653-A (GB)
Title: Improvements in or relating to lubrication valves
IPC: F16N27/00
Filed: 1952-06-25
Abstract: 718,653. Check valves. AUTO RESEARCH CORPORATION. June 25, 1952 [June 29, 1951], No. 15996/52. Class 135 A check valve assembly in a lubricant flow metering fitting comprises a plastic valve face D, a metal back-  ing plate E, a coil spring F acting on the backing plate and a cup-shaped valve retainer G reacting against the spring, the retainer G and the backing plate having co-operating stops to limit the valve movement. As shown in Fig. 3, the stop on the backing plate comprises an annular ridge 26 co-operating with a plate on projection 31 on the retainer G. The retainer has a series of flow apertures 30 and is held in a recess 33 by projections 36. Nipples 20 centre the metering pin C in the inlet bore 19. The valve disc E may be of vinyl resin, silicon plastic, oil silk, or fluoro ethylene polymers. The helical spring F may be replaced by one of barrel or conical shape. In a modification the thread 18 on the exterior of the valve body B is dispensed with and the body is press-fitted into a recess. The ridge 26 may be replaced by a series of projections 263 as in Fig. 6. The body B<SP>3</SP> has a slot 513 to permit it to be screwed into a tapped recess. In a further modification the retainer is held in position by the lower end of a flanged sleeve press-fitted into the top of the valve body and adapted to deform a compression coupling sleeve.
Patent GB-690496-A (GB)
Title: Improvements in and relating to electric motors
IPC: H02K23/66
Filed: 1950-06-27
Abstract: 690,496. Control of motors. BRITISH THOMSON-HOUSTON CO., Ltd., and HEWITT, W. April 18, 1951 [June 27, 1950], No. 16036/50. Drawings to Specification. Class 38 (iii) Means for connecting four series field windings of an electric motor so that the motor can be operated from any one of a number of sources which may supply either A.C. or D.C. and have different voltages or frequencies comprises a nine-block plug board and the terminals of the field windings are connected to eight of the blocks, the unconnected block being used for bridging. Plugs are adapted to connect adjacent blocks so that each field winding may be either arranged in a series or parallel group with other windings or left open-circuited, each of eight different arrangements of the field windings being suited to one or more types and ranges of supply.
Patent GB-105041-A (GB)
Title: A Fitting-up Bolt.
Inventor: GAY DONALD
IPC: F16B21/09
Filed: 1916-11-09
Abstract: 105,041. Gay, D. Nov. 9, 1916. Bolts, studs, &c. are locked by members 3 provided with circular holes 10, which slide over the shank portions 5, and which have oblong, parallel or inclined recesses which, on moving the members 3 laterally, engage slots in the shanks. The members 3 may have parallel or inclined faces.
Patent GB-564186-A (GB)
Title: Improvements in or relating to fastener devices
IPC: F16B5/10
Filed: 1941-12-12
Abstract: 564,186. Cowling &c. fastenings. STEVENS, A. H. (Thompson Products, Inc.). Dec. 12, 1941, No. 16063. [Class 44] In a cowling or like fastener comprising a stud rotatably mounted on one plate member and adapted to be passed through an aperture in the other plate member into fastening engagement with a spring member mounted thereon, the stud 13 is rotatably anchored in a grommet 12 secured in the cowling A and projecting from the inner face so as to enter the aperture in the other plate member B to take shearing stresses should the plates A, B be relatively laterally displaced. As shown, the aperture in plate A is countersunk and initially the grommet has a cylindrical stem extending from an undercut groove which receives the edge of the aperture, the stem being passed through the aperture and expanded as shown by a conical press-tool to provide a seat for the conical head of the stud. The stud has a nose of larger diameter than the stem and has cut therein a pair of opposed helical grooves 13f leading to a corresponding pair of transverse grooves 13e. When the stud has been inserted in the grommet a die with annular bead is used to press inwards the metal round the inner end of the grommet to restrict its bore so that shoulder 13c prevents removal of the stud. The spring member is formed from a single blank shaped and bent to provide feet 11a secured to plate B by rivets 14, each foot having a pair of legs 11b. The legs support a pair of stud-engaging spring portions, each having a central part 11d with curved endpieces 11c connected to corresponding legs 11b. The inner edges of the parts 11d are juxtaposed and cut away to provide between them the stud-receiving slot, the ends. of which are defined by lugs 11e. Fig. 15 shows an optional abutment member which may be used with the fastener to limit and increase the rate of resistance to distortion of the spring member in the fastening operation. This comprises a substantially rectangular base-plate with perforated ears 26a disposed between the legs 11b and receiving the rivets 14, and with an upstanding cylindrical part 26b surrounding the aperture in plate B. The upper end of the cylinder has a flange surrounding an aperture through which the stud passes. In use, the nose of the stud is entered in the slot and rotated, so that the edges of the slot ride up the grooves 13f and snap into the grooves 11e. If an abutment be provided, the rotation of the stud bends the spring member until the lugs 11e contact therewith, further rotation subjecting the spring to torsional distortion. The Specification describes two forms of shim which may be disposed under the feet 11a to adjust the spacing of the spring from the surface of plate B. The Specification also describes modified forms of grommet. The stud and grommet are preferably of steel and, to prevent corrosion where the plates A, B are of other metal, such as aluminium, the parts of the grommet in fixed contact with the plates may be plated with non-corrosive metal such as cadmium.
Patent GB-296498-A (GB)
Title: Scrubber or purifier for refrigerating apparatus
IPC: F25B43/00
Filed: 1927-06-16
Abstract: 296,498. Thayer, A. C. June 16, 1927. Refrigerating, compression machines for.-A chamber G filled with iron or zinc chips S is placed in the circulating system of a machine employing sulphur dioxide as refrigerant, to remove by chemical action any corrosive acids produced in the refrigerant due to the presence of moisture in the system and thus to minimize corrosion of parts of the compressor &c. The chips &c. are retained by coarse screens 0, O<1>, which are spaced from fine screens Q, Q<1> serving to filter the gas from solid impurities. Valves L, L<1> are fitted in the connecting tubes and a valved bye-pass pipe i, provided in the circulating system for use when the punner is removed for cleaning &c. The chamber may be placed in any part of the system. Specification 198,770 is referred to.
Patent GB-418390-A (GB)
Title: Vehicle suspension
IPC: B60G13/04
Filed: 1933-06-06
Abstract: 418,390. Spring-suspension systems; shock-absorbers. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, London, LACEY, B. W. D., and BAWCUTT, P. J., Fort Dunlop, Birmingham. June 6,1933, No. 16103. [Classes 108 (ii) and 108 (iii).] In a spring-suspension mounting for a vehicle wheel or an aircraft float or skid in which the wheel &c. is supported at one end of a lever 4, the other end of which is pivotally mounted on the vehicle body, in order to vary the shock - absorbing resistance automatically with the degree of shock, quick angular movement of the lever operates a liquid dashpot of the rotary-vane type which causes displacement of abutments 19, Fig. 4, towards or away from one another and consequent loosening or compression of concentric groups of obliquely-corrugated, coacting, rubber and steel spring-rings. The inner end of the arm is formed into a circular web bolted to four movable sector-shaped members 8, Fig. 3, which are separated from each other by fixed sector-shaped members 3, radial gaps 9 permitting limited relative movement of the members. The outer rings 17a, Fig. 4, of the larger - diameter series of rings 17, 18 are attached to the moving members 8 and the inner rings 17<b> to the abutments 19 which have opposite, quick-thread connections with a central shaft 16 and are separated from one another by resilient blocks 20. The outer rings 18b of the smaller diameter rings are secured to the fixed member 3 and the inner rings 18a to the abutments 19. The casing of the dashpot is formed integral with extensions 21 of the movablo members 8 while the vane 31 is formed integral with the shaft 16 and rotates in a lower chamber 27 separated by a valved partition 28 from an upper chamber 26. In operation, on slow upward movements of' the arm 4, a restricted channel 32 adjustable externally by a screwed plug 35, allows flow of liquid from one side to the other of the vane without moving the vane. The movement of the arm is therefore cushioned by the deformation of the corrugated rubber rings 18, which expand axially and force the abutments towards one another, and by compression of the blocks 20. On rapid upward movement of the arm the vane 31 is locked relatively to the casing and consequently rotation of the shaft 16 occurs which, due to the quick-thread connections with the abutments, causes the latter to separate and thus to increase the resistance of the rubber rings. According to the Provisional Specification, (a) an endless track may be supported by the arm 4 ; (b) instead of the screw-threaded portions on the shaft 16 one or more cam surfaces associated with frictionreducing elements may be provided ; and (c) the blocks 20 are replaced by an annular rubber ring.
Patent GB-809231-A (GB)
Title: Improvements relating to yarn tension regulators
IPC: B65H59/28
Filed: 1955-06-06
Abstract: 809,231. Tension regulator, damping means. DEERING MILLIKEN RESEARCH CORPORATION. June 6, 1955 [June 14, 1954], No. 16229/55. Class 120(2) [Also in Group XXXII] In a yarn tension regulator a movable yarn engaging member is fitted with a damper comprising an agitator which extends into a fluidtight chamber containing liquid, part of the wall of the chamber being formed by a flexible member which permits movement of the agitator with respect to part of the chamber and the arrangement is such that movement of the movable yarn engaging member causes relative movement between the agitator and the liquid and that resistance to this movement due to the resilience of the flexible member is negligible. In the arrangement shown a damper is applied to the yarn tension regulator disclosed in Specification 797,601. The arm 20 which carries the movable yarn engaging member 17 is pivoted on knife edges at 28 and carries an agitator rod 31 which extends upwardly into a fluid chamber 32. This chamber comprises a tubular member 33 having a close fitting cap 34 and an elongated flexible member 44 made, for example, or neoprene. In operation the flexible member 44 accommodates both lateral and pivotal movement of agitator 31 while the rigid member 33 ensures that when the agitator is moved there will be relative movement between the agitator and the fluid thus providing damping of the movement. In other embodiments the flexible member is in the form of a resilient grommet, a flexible diaphragm, or a tubular bellows member. It may also be arranged that the point of entry of the agitator into the chamber is on the same axis about which the pivotal movement of the arm 20 takes place. Specification 773,891 also is referred to.
Patent GB-847116-A (GB)
Title: Improvements in and relating to teleprinter apparatus
Inventor: DAY RICHARD ALLEN
IPC: H04L12/26
Filed: 1957-05-22
Abstract: 847,116. Telegraph distortion measuring apparatus. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. May 16, 1958 [May 22, 1957], No. 16320/57. Class 40(3). Telegraph signals applied through a valve V1 trigger a bistable circuit V2, V3 back and forth, the resulting anode waves being differentiated in circuits 31 32, 36 and 34, 35, 37 to produce impulse. corresponding to the mark-to-space anc space-to-mark transitions which are applied through a valve V4 to brighten a cathode-ray tube spiral time base for the purpose of indicating distortion. Ir accordance with the invention, the telegraph signals, which appear at ter minal 10, are applied to valve Vl from the junction of two resistors 63, 64 which are returned to a potentiometer 62 con nected between positive and negative voltage supplies. By this means any potential level on which the incoming signals are superimposed may be offset by a potential from potentiometer 62 so that the signals applied to Vl have a mean level corresponding to earth potential. In effect incoming single-current signals are converted to double-current form suitable for triggering the bistable circuit V2, V3. To facilitate the correct setting of potentiometer 62, the incoming signals may be taken from terminal 61 and displayed by deflection of a normal linear time base. The impulses from V4 are applied to intensity modulate the trace and provide a line of bright spots indicating the level of the incoming signals at which the bistable circuit is triggered. Potentiometer 62 is adjusted until this level coincides with a desired level of the signal.
Patent GB-871755-A (GB)
Title: Improvements in or relating to the purification of nitrogen
IPC: C01B21/04
Filed: 1958-05-21
Abstract: Waste N2 is purified from nitrogen oxide impurities for use in ammonia synthesis by adding H2 and passing the mixture over a palladium metal-containing catalyst, preferably supported.  The N2 may contain up to 1% nitrogen oxides, up to 5% O2, and up to 5% water vapour.  The contact may be effected in two stages, the first with less than the stoichiometric amount of H2, and the second after adding excess H2, or a plurality of stages may be used where higher O2 contents are concerned.  The gas may be initially contacted at 50-700 DEG F. and atmospheric-500 p.s.i.g. pressure at space velocities 5,000-150,000 v/v/hr.  The O2 and nitrogen oxides are converted to H2O, N2 and NH3 and H2O and NH3 may be subsequently removed.  The catalyst may be palladium metal or a major proportion of Pd in admixture with Pt, Rh, Ru, Os, or Ir, and may be 0.1-2% metal deposited on granules, pellets, or powder of alumina, activated alumina, silica, silica gel, or diatomaceous earth.
Patent GB-702003-A (GB)
Title: Process for the production of chlorine
IPC: C01B7/03
Filed: 1951-07-11
Abstract: <PICT:0702003/III/1> In the preparation of pure chlorine by heating chlorides, e.g. of alkali or alkaline earth metals or hydrogen, with nitric acid, the resulting gas-vapour mixture comprising chlorine, nitrogen oxides, nitric acid vapour, and water vapour is treated with sulphuric acid of 82-100 per cent. concentration to remove water vapour, so as to obviate the formation of nitrosyl chloride, and then concentrated nitric acid vapour, dry chlorine, and nitrogen oxides are individually separated.  Chloride and excess nitric acid are heated to boiling in reactor 50 and the resultant gases pass up through column 51 countercurrent to the sulphuric acid introduced at 41.  The sulphuric acid is reduced to 70 per cent. concentration and heated to 170 DEG C. in column 51 so that it does not retain any chlorine, nitrogen peroxide, or nitric acid vapour.  The dried gases pass through heat exchanger 52 to cooling coil 53 where the concentrated nitric acid is liquefied and returned to reactor 50 through heat exchanger 52.  The remaining gases pass up through absorption column 54 countercurrent to dilute nitric acid (55-65 per cent.), which may be the make-up acid for the process, added at 22 to absorb the nitrogen oxides, and then up through column 55 countercurrent to concentrated sulphuric acid (70-88 per cent.) introduced at 18 to decompose nitryl chloride and absorb the nitrogen oxides produced, and pure chlorine is withdrawn at 19.  The dilute nitric acid from the base of absorption column 54 flows down through column 57 countercurrent to air or free oxygen-containing gas added at 24 to desorb the nitrogen oxides, and thence through heat exchanger 52 to column 51 at 28, where it is concentrated (to 80-99 per cent.) and passes out with the vapours to be condensed in coil 53 before passing to reactor 50 for treatment of further chloride.  The nitrogen peroxide gases from column 57 pass to regenerator 58 where they are converted, by water added at 30, to nitric acid, which is also passed to column 51 at 28 for concentration.  If hydrogen chloride is used then reactor 50 is eliminated and hydrogen chloride gas is passed into the base of tower 51 see Fig. 2 (not shown).
Patent GB-443885-A (GB)
Title: Improvements in or relating to reservoir pen-holders
IPC: B43K5/06
Filed: 1934-06-02
Abstract: 443,885. Fountain pens. RIVKINE, D., 8, Rue de Braque, Paris. June 2, 1934, No. 16519. Void [Abridged as open to inspection under Sect. 91 of the Acts, Dec. 3, 1934]. [Class 146 (iii)] A reservoir - pen holder comprises an air chamber with a piston, which is returned by spring action to suck ink into an ink chamber connected to the air chamber, a valve between the two chambers and displaceable by the piston, and an operating-button connected by a rod to the piston. The air chamber 10 and ink-chamber 13 are screwed together and a valve seating 11 is screwed into the junction between them. A piston 6, packed with a rubber washer 5 at the lower end and returned by the spring 8, is operated by a rod 2 and provided with a second rod 9 on the lower end of which is a valve 12 fitting into the seating 11. The piston rod 2 is screwed into an operating button 1 at one end, and the other end may engage with either of two screwed constrictions 4, 7, arranged at the upper and lower end of the piston respectively. When the rod 2 is screwed into the thread 4 the piston may be pushed down by the button 1, the valve 11, 12 opening at the same time. The piston is returned by the spring 8, thus filling the ink chamber. The rod 2 can then be disengaged from the thread 4 and engaged with the thread 7, thus drawing the button tightly down on to the end of the barrel and on to a washer 3 and also closing the valve 11, 12, thus protecting the the ink chamber from the ink. A filter is provided in the feed bar 14.
Patent GB-476603-A (GB)
Title: Improvements in or relating to machines adapted for setting fasteners such as eyelets and the like
IPC: A43D100/02
Filed: 1936-06-13
Abstract: 476,603. Setting eyelets &c. UNITED SHOE MACHINERY CORPORATION. June 13, 1936, No.' 16536. Convention date, June 17, 1935. [Class 43] A machine for setting eyelets with non- circular flanges has a work-supporting member 60 provided with a hole through which an eyelet inserting tool 25 is movable to insert an eyelet into a workpiece, one or more walls 71 of the hole being non-circular and tapering to smaller dimension towards a clinching tool 45 so as to bring a straight edge of the flange into parallelism with the edge of the work. The eyelets are fed to the setting tools by an oscillating raceway 12 having a cover-plate 80 at 45 and for limiting the upward eyelet-pricking movement of the spindle 33 on the tool 25, each impaled eyelet being withdrawn from the shoot against the action of a spring-pressed pawl 77 as the raceway retires. The work is fed by the clinching tool 45 which is operated as described in Specification 114,590, [Class 43]. British Specification 28624 /11, [Class 43], and U.S.A. Specification 1,833,268 also are referred to.
Patent GB-1076424-A (GB)
Title: Improvements in or relating to games
IPC: A63F9/10
Filed: 1964-04-21
Abstract: Apparatus for playing a game comprises a plurality of cards or the like each of hexagonal form and each having printed thereon, painted or otherwise applied thereto adjacent the periphery, three portions of a representation of a given article, said portions matching with similar portions on the other cards or the like in said plurality so that in the course of play the cards may be laid alongside each other so as to produce a pattern of complete representations of the articles.  In one form of the game intermediate corners of the cards may be occupied by one third of a flower or intermediate sides by one half of a flower. A scoring device for use in the game comprises a card provided with horizontal rows of numbered holes adapted to receive pegs.
Patent GB-219150-A (GB)
Title: Improvements in and relating to bituminous cement-aggregate composition
IPC: E01C19/10
Filed: 1923-06-26
Abstract: 219,150. Finley, S. E. June 26,1923. Moving-container apparatus. - Apparatus for making a bituminous concrete consists of a cylindrical container 1 rotatably mounted on trunnions 17, 21, and provided over half of its inner surface with angularly-disposed blades 40. The trunnion 21 is hollow for the supply of bituminous binding medium to a series of nozzles 30. In operation, aggregate is placed in the container and cascaded to assure even distribution of the various sized particles. A predetermined quantity of binder is sprayed out to the cascading material. Gas under pressure is then admitted through the nozzles 30 to assist in the penetration of the aggregate by the bitumen.