baber/WOPTO huggingface dataset:
Patent GB-454633-A (GB)
Title: Improvements in means for feeding several electric amplifiers from the same supply
IPC: H01J21/20
Filed: 1935-04-09
Abstract: 454,633. Rectifying alternating currents. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and ESPLEY, D. C., and WALTER, D. O., c /o General Electric Co., Ltd., Wembley, Middlesex. April 9, 1935, No. 10964. [Class 38 (ii)] [See also Group XL] In amplifying systems designed for a wide frequency range, interference between amplifiers such as low-frequency feed-back is prevented by providing the rectifier with a plurality of anodes (or cathodes), associated with a single cathode (or anode), the anodes each supplying different amplifiers while the single cathode is common to the supply of all the amplifiers. Arrangements are described of single phase rectifiers with one or more cathodes connected to one end of the transformer secondary and co-operating with three anodes as one structure, Fig. 1 (not shown) ; another arrangement of single phase rectifiers has the anodes all connected to one end of the transformer secondary, and cooperating with three cathodes disposed according to current requirements, Fig. 2 (not shown). Figs. 3 and 4 show full wave rectifier arrangements ; in Fig. 3, three anodes A1, A2, A3 co-operate with two cathodes C0, A3 acting as a shield between the cathodes which are connected between opposite ends of the secondary of the transformer. Fig. 4 shows a full-wave assembly in which the anodes A0 are connected to each end of the secondary, the cathodes C1, C2, C3 feeding separate amplifiers. Screens S are provided as shown. Specification 313,075, [Class 40 (v)], is referred to.
Patent GB-1123524-A (GB)
Title: Sound transducer
IPC: H04R9/06
Filed: 1967-03-08
Abstract: 1,123,524. Audio transducers. ROLEN DIVERSIFIED INVESTORS Inc. 8 March, 1967 [16 March, 1966], No. 11008/67. Heading H4J. A moving coil transducer is adapted to be mounted on a vibratile panel e.g. a wall, solely by a mounting member attached to the centre of the diaphragm. If the transducer is a loudspeaker the whole wall is caused to vibrate audibly. Audible vibrations of the wall can also be picked up by the device acting as a microphone. The transducer comprises a magnet 7 made up of various sections 8, 9, 12, 14 and forming an annular air gap 21 for the voice coil 34 which is wound round a tube 33 integral with diaphragm 22. The diaphragm which is of moulded plastics e.g. fibre-glass strengthened epoxy resin, screws at its edges into a cap or jacket 27 of plastics material which encloses the magnet members. The whole transducer can then be screwed into the wall 6 or a similar support e.g. ceiling, desk top etc., by means of the screw member 53 which is embedded in the hub 49 of the diaphragm. Annular flange 46 provides an abutting member against the wall surface.
Patent GB-1425031-A (GB)
Title: Reinforced cements articles
IPC: D04H3/002
Filed: 1972-03-10
Abstract: 1425031 Cement-impregnated carbon fibre laminates COURTAULDS Ltd 8 June 1973 [10 March 1972] 11230/72 Heading B5N [Also in Divisions D1-D2 and E1] Fibrous structures comprise parallel carbon filaments in a cement binder, 10,000 carbon filaments of diameter 8-9 microns are surface treated by making them the anode of a cell having 10% sodium hydroxide as electrolyte and forming into a tow. In Example 1 the tow is formed into a uniform 5 cm. wide one filament thick band in an air-box spreader and passed through a dip bath comprising an aqueous dispersion of sub 45 micron diameter cement particles. 25 cm. lengths are cut from the dipped band, stacked in a mould and compressed to form a beam having carbon filaments aligned longitudinally.  In Example 2 a similar tow is spread by suspending it in a stream of water which diverges in a fish tail device, a water soluble size being applied during or after the spreading, as described in Specification 1,425,032, which lists sodium carboxymethyl cellulose, methyl cellulose polyvinyl alcohol and a hydrolysed styrenemaleic anhydride polymer as suitable binders. The sized band is cut into 25 cm. lengths and the lengths laid in a mould, an aqueous cement dispersion being applied to each layer. The laminate was covered and damp cured at room temperature for 7 days.
Patent GB-1284092-A (GB)
Title: Adjustable induction brake
Inventor: BAERMANN MAX
IPC: H02K49/04
Filed: 1969-08-13
Abstract: 1284092 Electric induction brakes M BAERMANN 13 Aug 1969 [31 Aug 1968] 11266/72 Divided out of 1284091 Heading H2A The subject-matter of this Specification is similar to that described in Specification 1,284,091, but the claims differ.
Patent GB-256184-A (GB)
Title: Improvements in double acting ratchet spanners
IPC: B25B13/46
Filed: 1926-04-29
Abstract: 256,184. Langkammerer, K., (trading as Robel & Co.). July 28, 1925, [Convention date]. Ratchet wrenches.-Both levers a, a of a double acting ratchet spanner can be coupled together by a clip i pivoted on one lever and engaging a slot in the other lever., Two arcuate guide segments f, g are provided, one on each lever, and slip into each other to prevent side play when the levers are actuated independently. The levers are held on the ratchet wheel b by adjusting nuts c.
Patent GB-898207-A (GB)
Title: Improvements in carburetors comprising an auxiliary device to increase the fuel feed for cold starting conditions
Inventor: MENNESSON ANDRE LOUIS
IPC: F02M1/10
Filed: 1961-03-28
Abstract: 898,207. Carburetters. SOC. INDUSTRI- 1- ELLE DE BREVETS ET D'ETUDES. March 28, 1961 [Feb. 20, 1961], No. 11340/61. Class 7(3). In a carburetter comprising a device 3 to increase the fuel feed for cold starting conditions and abutment means 21 for controlling the throttle opening capable of increasing this opening for running with a cold engine the device and abutment means being operated automatically and distinctly in accordance with the temperature of the engine the abutment means is controlled by a thermosensitive device 25 comprising a material 24 contained in a closed casing which material undergoes a substantial variation in volume when passing in a reversible manner from one physical state to another and in particular from the solid or pasty state to the liquid state between temperatures imparted to the last mentioned device according as the engine is cold or warm the device being capable of producing an effort greater than that exerted on the throttle valve by the resilient return means 10 thereof. Spring means 28a may be provided to act on the abutment means in opposition to the thrust exerted by the device 25 the spring means being stronger than the resilient return means 10 urging the throttle toward closing positions. The material 24 advantageously consists of stearic acid or some derivative thereof (stearates). As shown the bimetal spring 11 is subjected to the same heating fluid as the device 25. This fluid may consist of exhaust gases a stream of air warmed up by these gases or the cooling water or lubricating oil of the engine. In a modification the spring 11 may be heated by air that has passed through a tube extending through or joined to the exhaust pipe and the device 25 may be heated by the cooling water or lubricating oil. The carburetter may be of the type where fuel is injected under pressure into the induction pipe.
Patent GB-113705-A (GB)
IPC: H02B1/00
Abstract: 113,705. Railing, A. H., and Garrard, C. C. April 11, 1917. Switchboard details.-In switchboards of the cubicle type in which oil switches are employed, the conductors A immediately above the switch H or instrument transformer are enclosed in insulating-tubes D. Where the conductors pass through the partitions of the cubicle, insulating- bushes F are employed making air-tight joints. The insulating-tubes D are received in recesses in the sleeves F and in the terminal insulators E of the oil switches. The bus-bars, as well as the conductors leading from the switches, may be insulated by tubes G.
Patent GB-436664-A (GB)
Title: Illuminating installation for aerials
IPC: H05B41/232
Filed: 1934-04-16
Abstract: 436,664. Aerials. SKODA WORKS, PLZEN, 37N, Jungmannova, SVOBODA, J., 11, Americka, and RAUS, F., 708, Ruska, all in Prague. April 16, 1934, No. 11477. Drawings to Specification. [Class 40 (v)] In order to fit warning lamps or airnavigation signals directly to the masts of a wireless transmitting aerial, the generator for supplying the lamps with current is insulated from ground so as to prevent de-tuning of the aerial circuits, or loss of signalling-energy by capacity leakage to earth. The lighting- generator is mounted on an insulated base, and is driven by a motor from the ordinary supply-mains through a long coupling-shaft made of insulating-material.
Patent GB-866132-A (GB)
Title: Improvements relating to optical lens systems having a relative aperture larger thanf/1
IPC: G02B9/34
Filed: 1959-04-03
Abstract: 866,132. Optical objectives. OPTISCHE INDUSTRIE DE OUDE DELFT N.V. April 3, 1959 [April 3, 1958], No. 11488/59. Class 97(1) An objective for photography or projection has a relative aperture larger than F/1 and is made up of four components, of which the front component is a simple lens formed from glass with a refractive index less than 1.65 and having a thickness less than O.2F, the second component is a convergent meniscus doublet convex towards the front and has a convergent element with a refractive index less than 1.675 and between 0.02 and 0.04 lower than that of the divergent element of the second component and the cemented surface has a radius of curvature between 1.5F and 3F, the third component is a meniscus doublet convex towards the front and has a thickness of at least 0.35F and is made up of a convergent and a divergent element with a refractive index not less than 0.04 greater than that of the convergent element, and the fourth component is compound and comprises a divergent and a convergent part, has a front surface convex towards the front, a thickness of at least 0.3F and a rear surface with a radius of curvature not less than 2F. Optical data are given for two examples of which one is shown and of which the second has a rear component in the form of a triplet. Specification 696,902 is referred to.
Patent GB-256312-A (GB)
Title: Improvements in or connected with the starting of electrical converters or the like
IPC: H02K47/08
Filed: 1925-05-04
Abstract: 256,312. Thomas, B., and Thomas, E. May 4, 1925. Synchronizing dynamo-electric machines.-To ensure correct polarity on starting up a rotary converter or other machine having continuouscurrent excitation, the field is energized from a source other than that which normally supplies the field current, the auxiliary source being applied to the closed field circuit so as to reverse the field current if the machine should start with wrong polarity. In the form shown in Fig. 1, the converter A, which is used on a 3-wire system having a neutral connection M, has its field winding F connected to two contacts of a switch RS, whereby field current may be drawn from an auxiliary battery B. The switch is operated by a polarized relay PR connected across the converter armature. If the converter starts with wrong polarity, the relay tilts so as to close the switch and cause the battery to reverse the field current and give the right polarity. Thereafter, the relay opens the battery circuit. The switch may be of double- or single-pole type. In the form shown in Fig. 2, the switch RS is connected directly across the field coils F and is adapted for automatic closure or otherwise during the starting operation of the converter. Auxiliary and interlock switches may be provided for automaticworking.
Patent GB-938211-A (GB)
Title: Improvements in methods of solidifying watery atomic waste
IPC: G21F9/12
Filed: 1961-03-29
Abstract: 938,211. Processing radio-active waste. R. ALBERTI. March 29, 1961 [April 2, 1960; Sept. 22, 1960], No. 11579/61. Class 39 (4). Aqueous radio-active waste is introduced without stirring from below and within into a finely divided hydraulic binder contained in a mould, the mixture is allowed to set to a transportable block, and the block is subjected to a finishing treatment to increase its resistance to lixiviation. The binder may consist of Portland or aluminous cement, mixed, if desired, with gravel or heavy spar, and the concrete block is heated at about 1000‹ C. to form a sintered body. Alternatively an impregnating material may be introduced under reduced or increased pressure into the pores of the block. Suitable impregnating materials are self - hardening synthetic resins, for example liquid polystyrene, lacquers, synthetic fat-amino compounds, silicone resins, melted paraffin, liquid paraffin, silicone oil, or sodium silicate solution. Another method is to coat the block with a protective layer by spraying, painting, or immersion. As shown in Fig. 1, the liquid waste is added through funnel 2 and apertured tube 3 into the binder contained in mould 1 If the mould and tube are of a plastic, they can be burned away during the sintering process. In other illustrated forms of apparatus, the tube 3 is of spiral form or the mould contains several interconnected vertical perforated tubes. The impregnating material may be introduced through the tube 3 after the block has set. Specification 929,863 is referred to.
Patent GB-377267-A (GB)
Title: Improvements in and relating to electrolytic condensers
IPC: H01G9/12
Filed: 1931-04-20
Abstract: 377,267. Electrolytic condensers. CONDENSER CORPORATION OF AMERICA, 259, Cornelison Avenue, Jersey City, New Jersey, U.S.A.-(Assignees of Danziger, H. I. ; 40, East 10th Street, New York, U.S.A.) April 20, 1931, No. 11674. Convention date, March 13. [Class 37.] An electrolytic condenser is provided with a restricted vent 2 above the electrolyte in the top wall or cover 12 which is countersunk below a rim 13 so that the vent lies, in its entirety, below the level of the rim. The vent, Fig. 2, comprises an apertured protuberance 31 in the wall 12 covered by a pin-holed rubber cap 34 nipped into an annular groove 33 by constricting the groove at 36. Alternatively the cap may be sprung on to the protuberance or may be secured thereto by a separate clamping ring. Moreover the vent and cap alone may be countersunk locally into the top wall, Fig. 5. The condenser, Fig. 1, comprises an aluminium container 10 having a screw-threaded neck 11 passing through a support 15 and secured thereto by a nut 20 and centring washers 18, 19, connection being made to the container by a tab 21. An electrode 23 of spirally wound aluminium strip is carried on a shaft 24 in the electrolyte 22 and an insulating sleeve 27 surrounding the shaft 24 passes through the neck 11 and is secured to it by a nut 25. Connection to this electrode is made by a tab 29. The cover 12 is sprung on to the top of the container 10 and is curled over at its edge 13 to engage the rim of the container.
Patent GB-451976-A (GB)
Title: An improvement in or relating to surgical trusses
IPC: A61F5/24
Filed: 1935-04-16
Abstract: 451,976. Trusses. WHALEY, E. W., 53, Commercial Street, Batley, Yorkshire. April 16, 1935, No. 11677. [Class 81 (ii)] A surgical truss comprises a pad b mounted on a back plate a having keyhole slots c, therein which are detachably engaged by studs e<2> carried by fittings e secured to each end of a body strap d. The keyhole slots open into a common entrance opening cl, Fig. 3, for the studs and terminate in smaller openings c<3> in which the studs rest after their shanks have been passed along the portions c<2>. The pad is formed of rubber and has an undercut slot which engages the inturned flange a<1> of the back plate. A bottom strap f<1> is connected to the plate a by means of a slot g.
Patent GB-1336041-A (GB)
Title: Flocculating aqueous suspensions
IPC: D21H17/39
Filed: 1971-04-28
Abstract: 1336041 Modified polyacrylamides HENKEL & CIE GmbH 28 April 1971 [29 April 1970 31 Oct 1970] 11764/71 Heading C3P [Also in Divisions C1 D2 and C6] In Examples A and B modified polyacrylamides which may be used as flocculants, are prepared by polymerizing acrylamide in a solution containing potassium peroxydisulphate, sodium sulphate and caustic soda, heating the resultant polyacrylamide solution with propylene or butylene oxide, 1-diethylamino-2,3- epoxypropane, 1 - dibutylamino - 2,3 - epoxypropane or trimethylammonium-2,3-epoxypropane chloride under pressure and separating the resultant polymeric product using ethanol.
Patent GB-202686-A (GB)
Title: Improvements in machines for the cutting of metals by means of torches or blow pipes
IPC: B23K7/00
Filed: 1922-04-27
Abstract: 202,686. Herbert, Sir A., and Vernon, P. V. April 27, 1922. Perforating or dividing by fusion.-In an oxyacetylene or like. machine for cutting metal a slide which controls the movements of the blowpipe is mounted on a beam movable on one or more horizontal guideways at one or both sides of the machine, so that work of considerable size and length such as locomotive side frames, boiler plates, bridge members &c. may be cut at one setting. The guideways A, which may be vertically adjusted on two or more pillars A<2> by screws A<8> according to the thickness of the work, has rails A, A<5> to engage rollers B<2>, B<3>, B<4> on a carriage B<10> which is secured to or integral with a beam B, on which a slide B<5> is mounted. The slide B<5> carries a guide member C, which is rotated or rotatably adjustable about a vertical axis 0, and is provided with a slide E<4>. This slide E<4> may be connected directly to the blowpipe D as shown in Fig. 3, or through a second slide J on a second carriage J<3> provided with weighted cords J<5>, as shown in Fig. 1, and as described in Specification 202,687. In this form the slide E<4> is connected to the blowpipe by a link L and pillar L<2> which is coaxial with the blowpipe, and engages a template M as described in Specification 202,876. The slide E' may carry an arm E, in which the blowpipe is adjustable. the arm being rotated in the slide by a worm E<2> and worm wheel E<3>. The slides B<5>, E<4> are driven by a motor F through a belt F<2> and variable speed gear F<3>, the slide E<4> through shaft F<4>, gearing and feed screw C', and the slide B<5> through feed screws F<5> as described in Specification 202,687. Stops G may be used to stop the feed and cut off the blowpipe, flame automatically. Gas is supplied to the blowpipe from containers on a trolly D<5>. The work mav be supported on a table H, whch may be vertically adjusted instead of the guideway A. The table is mounted on trunnions supported by bearings H<2> so that it may be tilted by a handle H<16> through worm gear H<14>, H<15>. It may also be rotated by spur gear H<7>, H<8> and worm gear H<9>, H<10> from a shaft H" rotated either by hand or by spur gear and belts from a motor H<4>. In a modification the beam may be supported on guideways at both ends, each comprising a single rail having V-shaped sides.
Patent GB-997249-A (GB)
Title: Polymer composition and process for the production thereof
IPC: C08L23/12
Filed: 1963-03-26
Abstract: A polymeric composition comprises 1 part by weight of highly isotactic polypropylene and from 0.25 to 1.5 part by weight of modified propylene polymer consisting of highly isotactic polypropylene chains, to the ends of which are attached chains of ethylene-propylene copolymer, the proportion of homopolymer in the modified propylene polymer being at least 50% by weight, the proportion of polymerized ethylene in the modified polymer being from 2 to 20% by weight, the total proportion of polymerized ethylene in the composition being from 1 to 8% by weight.  The modified propylene polymer may be made either by polymerizing propylene in the presence of a titanium trichloride/aluminium diethyl chloride catalyst and then continuing polymerization with a mixture of propylene and ethylene, or by first polymerizing a propylene/ethylene mixture and then continuing the polymerization with pure propylene.  The compositions may also contain, as crystal-modifying compounds, carboxylic acids and their aluminium salts.  Specification 997,250 is referred to.
Patent GB-1502567-A (GB)
Title: Olefin polymerization catalysts
IPC: C08F2/34
Filed: 1976-03-24
Abstract: 1502567 Complexes MONTEDISON SpA 24 March 1976 [28 March 1975] 11917/76 Heading CIA [Also in Divisions C2 C3 and B1] Novel complexes of the formula wherein M = Mg, Mn and/or Ca; m = from 0À5 to 2; M<SP>1</SP> = Ti, V or Zr; X = Cl, Br or I; Y=one or more of halogen or halogen and oxygen, in an amount to satisfy the valence of M<SP>1</SP>; and are prepared by reacting a halide MX 2  at from room temperature to 150 C. with a compound M'Y in POCl 3  as solvent. The reaction may also be carried out in another solvent E selected from an ester of an organic carboxylic acid, an alcohol, an ether, an amine, an ester of carbonic acid, a nitrile, a phosphoramide or an ester of phosphoric or phosphorous acid to produce the complex and an excess of POQ 3  added to the complex or to a solution thereof in the solvent E to replace the substituent E by POCl 3 . Exemplified is the preparation of MgTiCl 6 .5POCl 3 .
Patent GB-668397-A (GB)
Title: A method and apparatus for provisionally supporting the working faces of mines or the like
IPC: E21D17/02
Filed: 1949-05-05
Abstract: 668,397. Mine roof supports. GROETSCHEL, K. M. May 5, 1949 [May 5, 1948], No. 12040/49. Class 20(ii) As the working coal face in a mine advances the permanent roof supports or lagging irons are connected to one another consecutively in alignment in the form of a chain and an auxiliary roof support k, h, i, Fig. 1, is laterally and detachably coupled so as to permit pivotal movement about a transverse axis to the forward end d of the lagging iron a fitted last, in order to support the roof adjacent the coal face pending the attachment of the next lagging iron a<SP>1</SP>, the arrangement being such that in its operative position the auxiliary roof support does not hamper the attachment of the hogging iron a<SP>1</SP> to the previous one a and the auxiliary support is removed after such attachment for use in the next advance. The lagging iron a has a forked forward end d, Figs. 1, 3, adapted to receive a tongue g at the rear end of the lagging iron a', which is pivotally secured therein by a pin c. A wedge e engaging the tongue g locks the two lagging irons a, a<SP>1</SP> rigidly together. The auxiliary roof support comprises a pair of two-armed levers h, k detachably carried on laterally projecting tubular pivots I on the end d of the lagging iron a, the pivots l being arranged over the holes b which receive the coupling pin c so that the latter can be inserted for the connection of the lagging irons a, a<SP>1</SP> unhampered by an already attached auxiliary roof support. Holes m in the rear arms k similarly allow the insertion of the wedge e. The forward arms h are extended by U-section bars i screwed to them and the rear arms k are connected by a bridge adapted to bear on the underside of the lagging iron a and comprising a bolt o, clamping jaws q, q<SP>1</SP> and distance piece p, Fig. 2. The oblique slots n in the arms k allow angular adjustment of the arms with respect to the lagging a. Alternative arrangements for securing the rear arms k to the lagging iron a and adjusting means therefore, Figs. 5, 6, 7 (not shown), may be used. The auxiliary roof support can be kept in a position of readiness suspended from the lagging iron a as shown in Fig. 1, adjustment of the bolt o providing sufficient lateral play for the arms k, h to enable them to be readily tilted up and secured on the pivots l. In a modified construction shown in Fig. 4, the lagging irons a, a<SP>1</SP> are coupled together by a simple link connection and the extensions i of the auxiliary roof support are secured to the lagging for angular adjustment, the lagging iron a<SP>1</SP> as a cantilever until it is supported by a prop. The pivotal supporting means and the means for coupling the rear arms k to the permanent lagging iron as shown in Figs. 1, 4 may be interchanged in position or may both be arranged at the rear end of the auxiliary lagging iron, the means for angular adjustment of the latter being then arranged either intermediate its ends or near its forward end.