baber/WOPTO huggingface dataset:
Patent GB-1163541-A (GB)
Title: Steam turbine installations
Inventor: HEILBRONN FELIX SAMPSON
IPC: F01K19/08
Filed: 1966-05-20
Abstract: 1,163,541. Steam turbine plant; injectors. ENGLISH ELECTRIC CO. Ltd. May 19, 1967 [May 20, 1966], No.22715/66. Headings F1E and F1T. In a steam turbine plant having a boiler feed pump 30 driven by an auxiliary turbine 16, the auxiliary turbine is supplied with steam from an intermediate point 20 of the main turbine 11, 32 through an ejector 33 arranged to be supplied with steam from a second point upstream of the intermediate point and means is provided for varying the mixing of steam in the ejector. In operation with the main turbine on full load, a throttle valve 39 at the outlet of the ejector is partly closed and the needle valve 42 of the ejector is closed. As the main turbine load is reduced a pressure responsive device 47, through an electric or fluidpressure operated system 48, causes throttle valve 39 to open increasing the pressure of the steam supplied to the auxiliary turbine 16. When the valve 39 is fully open the device 47 begins to operate a servo-mechanism 49 actuating the needle valve 42 so that live steam from the plant boiler is fed through the ejector nozzle. To prevent excessively high temperatures in the ejector 33 the live steam may be desuperheated. The throttle valve 39 may be mounted at the inlet 34 to the ejector 33. In a further embodiment, Fig. 5 (not shown), a by-pass (51) is provided direct from the live steam supply (10) to the auxiliary turbine (16) and the by-pass contains a valve (52) opened by the pressure responsive device (47) at very low main turbine loads. The device (47) may be arranged to close the needle valve (42) and the throttle valve (39) immediately the by-pass valve (52) opens. In another embodiment, Fig. 6 (not shown), live steam is supplied to the ejector nozzle through a desuperheater (52) having a spray-control valve (53) governed by a temperature controller (54) linked to the desuperheater outlet. The supply pipe (35) from the main turbine (11, 32) is provided with a throttle valve (55) operated in conjunction with the needle valve (42) and a by-pass (56) direct to the auxiliary compressor (16) containing a non- return valve (57). The by-pass non-return valve (57) when open operates a switch to close the needle valve (42). The line supplying steam to the ejector nozzle may be provided with a throttle valve to control operation of the ejector.
Patent GB-893360-A (GB)
Title: Improvements relating to the viewing of photographic colour transparencies
Inventor: VENEEAR BENJAMIN JAMES
IPC: G02B27/02
Filed: 1959-07-02
Abstract: 893,360. Photographic &c. albums; filing papers; picture mounts. OFREX Ltd. July 1, 1960 [July 2, 1959; Oct. 9, 1959], Nos. 22780/59 and 34334/59. Classes 11 and 146(1) An album has covers 2, 3 and pages 1 of transparent plastic sheet material such as polyvinyl chloride, formed by turning its outer portions 4, 5 inwards leaving a narrow space 6. The parts are welded together at 7, 8, 9 to form pockets and the sheets are held together by a cord 1a or other usual clip means. The front cover 2 is padded with a plastic foam covered by a layer 11  of plastic and is provided with a pocket 13 slightly smaller than an illuminated viewing box 12. The box 12 comprises a frame 14, bulbs 15, an opaque mask 19 and an opening 20 filled with a diffusing screen 21. The bulbs 15 are lit by a battery 24 housed in the spine of the album and controlled by a switch 25. The device 12 may be the size of a whole page and may have switches or shutters so that only one packet at a time is illuminated.
Patent GB-1423047-A (GB)
Title: Dyeing additives
IPC: D06P1/66
Filed: 1973-05-14
Abstract: 1423047 Quaternary ammonium carboxylic esters IMPERIAL CHEMICAL INDUSTRIES Ltd 18 April 1974 [14 May 1973] 22785/73 Heading C2C [Also in Division Dl] Examples 1, 4, 5 and 6 describe the preparation of quaternary ammonium compounds, used as dyeing retarding agents, having the general formula wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are alkyl or alkenyl, R<SP>4</SP> is H or alkyl, at least one of R<SP>1</SP>-R<SP>4</SP> having at least 8 carbon atoms and the remainder 1-4 carbon atoms, X is an anion, Y is H or methyl and n is 0 or an average from 1-30. In Example 1 trimethyl dodecyloxycarbonylmethyl ammonium chloride is prepared by heating dodecyl alcohol, chloroacetic acid and p-toluene sulphonic acid monohydrate under reflux in toluene. Trimethylamine is then bubbled through the dried solution of the ester in toluene and the white solid separated by filtration.
Patent GB-914130-A (GB)
Title: Improvements in spectacle frames
IPC: G02C1/06
Filed: 1960-06-29
Abstract: 914,130. Spectacle frames. MATHIEU, E., MATHIEU, F., and PETIT, J. June 29, 1960 [June 29, 1959], No. 22807/60. Class 97 (1). A spectacle frame comprises two grooved lens receiving rims 4, each secured to the lower part of a metal front or browbar comprising two flat brow arches 2, 3 joined by a bridge; two ornamental trims 8 are fitted to conceal the junction of the top of a rim with its brow arch.
Patent GB-1055333-A (GB)
Title: Improvemets in or relating to conduit or pipe connecting clamps
IPC: F16L5/00
Filed: 1964-02-25
Abstract: 1,055,333. Pipe connections. G. R. MARTIN. Feb. 25, 1964 [Feb. 26, 1963], No. 23015/66. Divided out of 1, 055,332. Heading F2G. The wall, e.g. of a hot water cylinder, is clamped between plates 1, 7 having complementary faces which conform to the shape of the wall, the plate 1 having secured thereto wires 6 by which, after being passed through the wall, the plate is positioned and so that the plate 7 may be secured on the studs 12. A sealing washer 22 is disposed between the wall and the plate 7, and sealing washers 16 are positioned in recesses 15 and beneath the nuts 18. A nipple 5 is screwed into the plate 1 and a backnut thereon compresses a sealing washer 10 in a recess 9 in the plate 7.
Patent GB-1247970-A (GB)
Title: Spool for sewing thread
Inventor: LAHMANN ALBERT HEINRICH JURGEN
IPC: D05B43/00
Filed: 1969-05-06
Abstract: 1,247,970. Thread reels. GUTERMANN & CO. A.G. 5 May, 1970 [6 May, 1969], No. 23061/69. Heading B8M. A spool for sewing thread comprises an outer tubular member 1 and an inner member 2 telescoped within the outer member 1, the inner member 2 being provided with a tubular portion 8 coaxial with the outer, thread carrying, surface 6 of the outer member 1, and the inner member 2 also being provided with a head 10 to trap thread in an inwardly tapering groove formed between it and an end of the outer member 1. The two parts are preferably moulded from plastics material and the inner member 2 is a friction fit in the outer member 1. The tubular portion 8, which engages a post of a sewing machine, is spaced from the outer tubular member by longitudinal fins 9a. Some fins extend the full length of the tubular portion 8 while some shorter fins have an undercut edge to engage an initial loop of thread to prevent slip at the beginning of the wind. The opposing surfaces of the head 10 and the end of the outer member 1 co-operate to form an inwardly tapering groove in which the thread is trapped. Protuberances may be provided on one or both of these surfaces. In a preferred embodiment, protuberances 13a, 13b are provided on tongues 13 which project into holes 12 in the surface of the head 10. These tongues are deflected by pressure of the thread and the thread is trapped radially inwardly of the outer protuberance 13a. The outer member 1 is also provided with a head 3 having a central bearing hole 4 and a thread retaining rim 5. The other end of the member 1 is also provided with a thread retaining rim 7.
Patent GB-1302253-A (GB)
IPC: D02J13/00
Filed: 1970-05-13
Abstract: 1302253 Apparatus for stretching fibres MASCHINENFABRIK RIETER AG 13 May 1970 [13 May 1969] 23148/70 Heading B5B [Also in Division F4] An apparatus for the removal of vapours and condensate from an arrangement for drawing continuous filaments comprises a stationary block heater over which the filament is poured, a heated drawing roller under a cover and a suction hood depending from the cover. The cover forms the top of a compartment which acts as a chimney in conducting vapours away from the region of the heated draw roller and the suction hood communicates with this compartment. Means are provided for applying suction through the cover to the suction hood in order to aid the chimney action. The filament or the block heater is also subjected to a slowflowing stream of air. The suction hood is so arranged that condensate which drips off the block heater is conducted eventually to it; this condensate and condensate from other sources being carried away to the rear wall. In the embodiment of Fig. 1, the filament first passes over block heater 6 which is covered by heater cover 7. Suction is applied to the top of the heater by means of tube 11. Below the heater there is located cover 9, the top of which 19 slopes down towards channels 25 at the rear. Slots 10, widened at the rear into holes 20 enable the filament to be threaded early into the apparatus between the block heater 6 and the heated draw rolls 3. The suction hood 13, directly below the cover 9, has suction supplied to it via hose 24 and communicates with the screw under cover 9 by means of holes 12. Holes 22 in this hood allow suction to be applied to the lower end of the heater block 6. The bottom 14 of the suction hood slopes down towards the back so that a channel 16 is formed between it and the back 15. Channels 16 have an outlet opening 2 through which the condensate in the hood is delivered to the back wall 18 of the apparatus. Channels 25 in the cover 9 drain condensate through holes 26 into the suction hood, from which the condensate passes via channels 16 and holes 27 to the back wall 18. Each draw roll 3 is located in a separate compartment formed by the cover 9, the suction hood 13, the back wall 18 and partitions 17 which pass through the suction hood, dividing it into sections. The bottom edge 17<SP>1</SP> of the partitions 17 slopes downwards towards the back to guide condensate to the back wall 18, where it joins condensate from the other sources and runs into channel 28 and eventually away. In the modification of this in Fig. 2, the heater cover comes to a point 31 at its bottom/end in order to guide condensate via hole 22 into the suction hood. In addition a suction is applied to the bottom of the heater block by pipe 33.
Patent GB-797293-A (GB)
Title: Improvements in the weaving of fast lashed-pile corduroy or other weft pile fabrics
Inventor: LEES JAMES
IPC: D03D27/12
Filed: 1955-08-11
Abstract: 797,293. Corduroy fabrics. LEES & CO., Ltd., E'. Aug. 2, 1956 [Aug. 11, 1955], No. 23162/55. Drawings to Specification. Class 142(4) In a lashed-pile corduroy or other weft pile fabric the ground ends are of normal coarse count and the lashing ends are of much finer count. The ground ends may be 2/24 and the lashing ends 2/58, cotton counts in both cases. The fine lashing ends are treated as separate units during the weaving of the pile picks, but during the weaving of the back picks two fine lashing ends are treated as one. The coarse ground ends may be dented one or two in a dent and the lashing ends dented four or more in a dent.
Patent GB-406028-A (GB)
Title: Improvements in circular looms for weaving
IPC: D03D37/00
Filed: 1932-08-18
Abstract: 406,028. Circular looms. BRITISH CELANESE, Ltd., 22, Hanover Square, London, HALE, F. C., and HOWARTH, W., c/o British Celanese, Ltd., Spondon, near Derby. Aug. 18, 1932, No. 23169. [Class 142 (ii).] A circular loom, of the type comprising a plurality of shuttles, a shaft in association with each shuttle and vane wheels on the shafts adapted to penetrate the warps and hold the shuttles in position in the warp sheds, is provided with a plurality of means for driving said shafts, each of said means driving a plurality of shafts. As shown each shaft 15, carrying four vane wheels 14, is mounted at its ends in bearings 16 carried on an annular stationary plate 30, and the shafts are connected together in an endless chain by universal joints 116 or bevel gearing. The loom holds twenty stationary shuttles 10, and at every fifth universal joint a bevel gear 18 is secured to one of the shafts 15 and meshes with a bevel 19 secured to a shaft 36 driven by a gear 40 engaging with a circular rack 41 passing completely around the loom and rotating with the warp threads. The shedding means comprise deflecting wheels 22, 23 disposed alternately outside and inside the warp circle, which wholly or partly open the shed, which is then held open by the shuttle. The machine may comprise a warp stop motion as described in Specification 285,435, [Class 142 (ii), Looms, Kinds &c.]. According to the Provisional Specification the shuttles may be loaded with weights.
Patent GB-1285168-A (GB)
Title: Apparatus for detecting a predetermined filling level in a liquid container
IPC: G01F23/288
Filed: 1971-04-19
Abstract: 1285168 Liquid level indicators VDO TACHOMETER WERKE ADOLF SCHINDLING GmbH 19 April 1971 [4 March 1970 5 May 1970] 23173/71 Heading G1H In a liquid level detecting apparatus a Gieger- M³ller counting tube 11 is arranged in a recess depending from a chamber 2, containing one or more terminals, and a source of beta radiation, contained in a capsule 15, is arranged in a wall of a parallel recess 18 and the arrangement is such that the liquid surface on rising in the recess 18 cuts off the radiation particles reaching the counter 11. In an alternative embodiment, Fig.3 (not shown), the radiation source is a gas which emits beta radiation particles and a flow discharge lamp in circuit with a resistor and a capacitor is provided on the top of the device and gives a flashing signal when the liquid level falls below a predetermined value.
Patent GB-443687-A (GB)
Title: Apparatus for projection of molten pulverised bodies
IPC: B05B7/20
Filed: 1935-08-19
Abstract: 443,687. Spraying fusible materials. BENOIT, F. P. C., 41, Rue de Prony, Paris. Aug. 19, 1935, No. 23218. Convention date, Oct. 31, 1934. Addition to 416,452 and 425,817. [Class 69 (iii)] The nozzle for spraying molten pulverulent materials described in Specification 425,817 is provided with internal channels for the passage of air for cooling the burner. The powderladen stream of air passes through the axial passage 64, combustion gases through the passage 67, thence through an annular groove 145 to passages 68 around the tip of the burner. Compressed air for cooling the burner is supplied to a passage 146, from whence it flows by an annular groove 148 to passages 149 in a spool 147. The air now passes between the conical surface of the spool 147 and the cap 150 and escaping at the nozzle serves further to atomize the metal, the cap may be provided with radial or parallel cooling fins 153.
Patent GB-463298-A (GB)
Title: Improvements in or relating to engine driven railway trucks
IPC: B61C1/02
Filed: 1936-08-24
Abstract: 463,298. Engine-driven rail trucks. BESLER, W. J. Aug. 24, 1936, No. 23229. [Classes 79 (i) and 79 (iii)] [Also in Group <XXIV]> An engine-driven railway truck, suitable for railcars, shunting engines, locomotives, &c., consists of a main frame 11, 12 (Fig. 1) with transoms 13 to which are pivotally connected one or more axle driving engine units, Fig. 4, comprising in effect sub-frames upon which the main frame is supported by coil springs 31, 32, slider members 50, 51, being provided to preserve alignment. Between the transoms 13, a transverse plank or platform 14, Fig. 6, suspended by links 15, carries springs 16 supporting the truck bolster 17 with a central pivot seating 18. Each subframe unit, Fig. 4, comprises a main transverse member 21 with side members 22, 23 of hollow formation tied at their outer ends by a cross-bar 24. The wheel axle 26 is journalled, beyond the wheels 75, in self-aligning bearings 25 in the side members, the axle ends protruding into the hollow parts which constitute casings to accommodate cranks 64, connecting rods 70, sliding cross-heads 72 and, finally, pistons of reciprocatory engines, steam or internal combustion, the cylinders 76 being either integral with or, preferably, bolted to the side members. Coverplates 74 at the sides provide for access. The crank members secured to the axle ends comprise counterweighted plates 63, Fig. 9, shrunk on to reduced axle extensions 60 which are eccentric and disposed on the opposite side of the centre to the crank pin 64 so as to allow each of these members to be of greater diameter than if the extension 60 were concentric. The valve gear is controlled by an extension 67 of the crank pin. The sub-frame unit is pivotally connected to the transom 13 by a ball-and-socket joint, Fig. 7, the ball member 30 being carried on a spindle 33 mounted in a recess or gap in the transom. A strap 38 attached to a lug 37 on the sub-frame cross-member 21 surrounds the ball, spherical filling segments 35, 36 being interposed, retained in position by annular plates 39, 40 secured by bolts 41.
Patent GB-686862-A (GB)
Title: Improvements in or relating to gyro-verticals
IPC: G01C19/44
Filed: 1950-09-22
Abstract: 686,862. Gyroscopic apparatus. SPERRY CORPORATION. Sept. 22, 1950 [Sept. 24, 1949], No. 23250/50. Class 97 (iii). [Also in Group XXXVIII] A gyrovertical such as for aircraft comprising a rotor case 1, Fig. 1, pivoted about fore-andaft major trunnions 2 and minor athwartship trunnions 3 within a gimbal ring 4 has a pendulum mounted thereon about axis 11<SP>1</SP>, 121, parallel to the fore-and-aft and athwartship axes respectively, the pendulum housing a rotor 6, Fig. 3, for spinning in bearings 7 and 8 about the axis 12<SP>1</SP>. In the initial adjustments mass 23 is so positioned on the threaded shaft 231 depending from the casing 9 that the auxiliary gyroscope is neutrally balanced about axis 11<SP>1</SP>, 121. The mass 50 on the base of the main gyroscope balances the mass of the auxiliary gyroscope excluding mass 23 and so a small mass 51 is adjusted on its threaded stem, depending from case 1, until the whole assembly is balanced about axes 2 and 3. The mass 23 is finally moved down so that the pendulosity of the entire assembly is equal to that of the auxiliary gyroscope and is such that during a turn at a prescribed speed the pendulum remains vertical. Pick-offs determine the relative tilt between the pendulum and case 1 and supply signals to torque motors 21, 22, to erect the case. The pick-offs may comprise four tension wires 15, 151, 16, 16<SP>1</SP>, Fig. 1, whose impedances vary with strain and which are anchored at their outer ends to the top of case 1 and at their inner ends to stem 23<SP>1</SP>, each pair of strain gauges being connected in the form of a Wheatstone bridge circuit for providing an output signal applied through an amplifier to the corresponding torque motor. Alternatively, the lower end of stem 231 may support a dish-shaped disc 28, Fig. 3, which is normally symmetrical with respect to cruciformly positioned polepieces such as 30, 30<SP>1</SP>, 31 attached to the case 1 and each provided with a winding. The winding on the central polepiece is excited from a single phase supply and the winding on opposite poles are connected in opposition through an amplifier to the respective torque motor for erecting case 1. To maintain the pendulum vertical during turns at any speed and during changes of speed, the rotor speed of the auxiliary gyroscope is controlled in accordance with the speed of the craft, by supplying the spinning motor field 51 with the amplified output of a polyphase generator driven from a fan in the slip stream. The auxiliary gyroscope is mounted by means of leaf springs 14, 14<SP>1</SP> and 13, 131 in its gimbal ring 10 and brackets 11, 12, or in a modification normal bearings are used. Transmitters 53, 54 transmit the indication of the entire assembly. Specification 641,360 is referred to.
Patent GB-369139-A (GB)
Title: Manufacture of artificial materials from fibroin solutions
IPC: D01F4/00
Filed: 1931-08-18
Abstract: Aqueous neutral or feebly alkaline fibroin solutions are spun into a concentrated salt solution and the coagulated product stretched.  The coagulation bath may comprise a concentrated solution of an inorganic salt, or of an organic salt, or of a mixture of these, if desired with an addition of an inorganic or organic acid, or both.  In examples, (1) natural silk waste is dissolved in sodium thiocyanate solution, which is dialysed, concentrated, and spun with stretching into a 40 per cent solution of ammonium sulphate; (2) a fibroin solution obtained as in (1) is spun into a bath containing 50-60 per cent of ammonium formate and 3 per cent of formic acid, and the thread stretched; (3) a fibroin solution prepared as in Specification 355,161 is spun into a bath of 42 per cent of ammonium sulphate and 4 per cent of sulphuric acid, and the thread stretched to 4,3 times its length; (4) a solution of fibroin in ammoniacal copper oxide, from which the ammonia has been removed, is spun into a bath containing 42 per cent of ammonium sulphate and 4 per cent of acetic acid, and the thread stretched to six times its length; (5) a fibroin solution as in (4) is spun into a bath containing 39 per cent of ammonium sulphate and 2,4 per cent of sulphuric acid, and the thread stretched to 4,5 times its length.
Patent GB-881073-A (GB)
Title: A method of producing an aqueous solution of high concentration of polyvinyl alcohol
IPC: C08J3/05
Filed: 1959-07-07
Abstract: Aqueous solutions of polyvinyl alcohol of 35 to 65% concentration are produced by means of a screw-type extruder from a mixture of polyvinyl alcohol and water wherein the temperature at the inlet of the extruder and for between 5 and 40% of the total length of the screw is maintained at a temperature not exceeding 90 DEG  C. and the exit of the extruder is maintained at between 110 DEG  C. and 160 DEG C.
Patent GB-186802-A (GB)
Title: Improvements in or relating to telephonic systems
IPC: H04M1/00
Filed: 1921-09-02
Abstract: 186,802. Graham, E. A. Sept. 2, 1921. Addition to 7331/14. Drawings to Specification. Direct-call systems.-In systems of the kind in which the transmitter at one station is in series with the receiver at the other station and in which a condenser is connected in parallel with the portion of the circuit containing the transmitter and receiver in order to exclude from the speaking circuit effects due to inductance in the supply leads, as described in the parent Specification, the circuits are adapted for twoway working by providing a transmitter and a receiver in series with one another at each station.
Patent GB-791205-A (GB)
Title: Improvements relating to the insulation of electrical apparatus by a gaseous dielectric
IPC: H01F27/20
Filed: 1956-07-30
Abstract: 791,205. Transformers. GENERAL ELECTRIC CO. July 30, 1956 [July 29, 1955], No. 23474/56. Drawings to Specification. Class 38 (2). [Also in Group XXXVI] The gas-tight tank of an electric transformer is filled with a mixture of C 4 F 6  (hexafluorobutane-2) and a fluorocarbon gas having a lower condensing temperature. The latter gas may be octafluoropropane (C 3 F 8 ), and may form between 25 per cent and 95 per cent of the total volume. Other gases such as nitrogen and sulphur hexafluoride SF 6  may be added to the mixture or partially replace one of the components. The tank may also contain a granular absorbant, such as alumina, or soda lime for removing corrosive products. The gases may be circulated through external cooling tubes.
Patent GB-615390-A (GB)
Title: Improvements in dental cements
IPC: A61K6/02
Filed: 1946-08-08
Abstract: A liquid for mixing with zinc oxide powder to produce a dental cement for temporary cavity filling or as cavity lining for permanent fillings, comprises eugenol and a relatively low percentage of acetic acid, in a preferred ratio 99.5 c.c.'s eugenol and 0.5 cc acid.  This liquid is mixed with zinc oxide powder in the preferred ratio 1.5 grams powder to 0.1 c.c. liquid. In a statement of prior art the addition of wood resin or hydrogenated resin or a metallic acetate such as zinc acetate to the zinc oxide powder for compounding with eugenol or oil of cloves to shorten the setting time of the resultant cement is referred to.