baber/WOPTO huggingface dataset:
Patent GB-1120373-A (GB)
Title: Film-forming cellulose compounds
Inventor: PARK JOSEPH
IPC: C08B5/04
Filed: 1966-05-31
Abstract: Cellulose derivatives which contain free OH groups are esterified thereon to introduce fluorinated straight-chain, aryl, or cyclic hydrocarbon groups.  Specified cellulose derivatives are nitrocellulose, cellulose acetate, acetate-butyrate, or propionate, and methyl, ethyl, hydroxypropyl - methyl, hydroxyethyl, ethyl hydroxyethyl, and sodium carboxymethyl celluloses, which may be reacted with an acid of formula RCOOH, where R is the fluorinated hydrocarbon radical, or with an anhydride or halide of such an acid. Perfluorobutyric acid, perfluoro-octanoic acid and the corresponding acid halides are specified.  The reaction may be conducted in suspension in, e.g. toluene, and in the presence of a water or hydrogen halide removing substance, e.g. CaCl2, ZnCl2, anhydrous Na2SO4, NaOH, amines on Mg metal. Films made of the fluorine containing products have an increased resistance to chemical attack.
Patent GB-1363993-A (GB)
Title: Apparatus for cutting and forming leads of electrical components
IPC: H05K13/04
Filed: 1972-05-23
Abstract: 1363993 Making electrical components R A SCRANTON INDUSTRIES Inc 23 May 1972 [6 July 1971] 24233/72 Heading B3A Apparatus for cutting and bending axial leads of electrical components comprises a reciprocable block 36, Fig. 10, having a component carrying section 46 disposed between a pair of parallel cutters 30, the section 46 having a pair of surfaces 104 for supporting the leads of a component and stop means 106 located behind the plane of the cutting edge of the cutters 30 for engaging the inner ends of the leads, and a fixed block 66, Fig. 1, having a pair of spaced shearing blades 72 disposed in the path of the section 46 and whose inner surfaces are spaced apart a distance slightly greater than the pair of surfaces 104 for bending the leads as the section 46 passes therebetween. In operation, with the block 36 in its rearmost position, the lowermost component in a feed shoot 90, Fig. 1, drops between lead slots 84 and on to the surfaces 104. On forward movement of the block 36 by means of an eccentric drive mechanism 50, the shear blades 30 and 72 co-operate to shear the outer ends of the leads. The component is then momentarily held against the rearward face 124 of the shear blades 72 until the inner ends of the leads are engaged by shoulders 106. Further forward movement of the block 36 causes the leads to be bent as shown in Fig. 12. On the return stroke, the tip of a lever 116, which has ridden over and is now behind the component, engages the component and holds it as the block 36 moves rearwardly, and upon the forward edge of section 46 passing the component, the latter drops into a receptacle. Wear resistant carbide bars may be used on the shear edges of blades 72.
Patent GB-597919-A (GB)
Title: Improvements in or relating to charging arrangements for electric battery-operated trucks
IPC: H02J7/18
Filed: 1945-09-19
Abstract: 597,919. Charging batteries. BURGER, F.E. Sept. 19, 1945, No. 24238. [Class 38 (iv)] To charge the battery 21 of an electric truck or the like, the controller 26 for the series traction motor 11 is moved to its " off " position 29, a plug 20 is connected to a source of mains supply and a switch 19 is operated to connect to the mains a motor 17 and to establish a shunt field circuit for the machine 11 which is then driven as a charging generator by motor 17. A linkwork 41-44, actuated with the switch 19, declutches the truck wheels 16 from the common shaft 12 of the machines 11, 17 when the switch is moved into the " charging " position. A cut-out 31-33, 45 is provided in the charging circuit and a variable resistor 35 in the shunt field circuit.
Patent GB-686832-A (GB)
Title: Improvements in or relating to road kerbs and like edgings
IPC: E01F9/053
Filed: 1949-09-21
Abstract: 686,832. Kerbs HODGE, N. D., and RUTHERFORD, A. C. Dec. 21, 1950 [Sept. 21, 1949], No. 24246/49. Addition to 613,077. Class 107 [Also in Group XVIII] The kerb of the parent Specification is formed with the facets 3 disposed not less than 35 degrees nor more than 55 degrees to the horizontal.
Patent GB-437986-A (GB)
Title: Improvements in apparatus for general anaesthesia
IPC: A61M16/10
Filed: 1934-08-22
Abstract: 437,986. Valves. CLAUDEL, M., 40, Rue de Verdun, Carcassonne, Aude, France. Aug. 22, 1934, No. 24256. Convention date, Aug. 24, 1933. [Class 135] [See also Group VI and XI] In apparatus for general anµsthesia using single gases or mixtures thereof, together with liquid anµsthetics if desired, each gas container is fitted with an expansion valve e.g. of the diaphragm and/or needle valve type, all the valves being operated by a single control so that the gases are supplied at the same pressure to gas supply lines each provided with a valve adapted to vary the output of the gases, these latter valves having a single control so constructed that any desired gas or mixture of gases may be administered through an inhalation mask. In the arrangement shown, gas cylinders (not shown), containing for example nitrous oxide and oxygen, are fitted with expansion devices 5, 5<1> of known type, the operating shafts 15, 15<1> being screwed into a ring 14 so that each shaft is displaced longitudinally in opposite directions when the ring is rotated by gears 10 and 11, the gear 11 being operated by a control knob outside the casing 2. Each expansion device is connected to a measuring cock 8 and 8<1>, each consisting of a needle valve 16 operated against the action of spring 22 by the rotation of shaft 19. The end of the needle valve is slidable in shaft 19 which has a threaded portion 20 coacting with the valve casing. Teeth 21 at the end of the threaded portion 20 abut against studs on the valve to prevent the valve sticking in the seating. The shafts 19 are welded into a shaft 33 which is slidable in a ring 32, but is grooved to prevent rotation. A bevel gear 28 is secured to the ring 32 and is driven by wheel 31 through gear 29. The wheel 31 operates a pointer over a graduated scale on the outside of the casing, giving the proportions of the gas mixture administered. A threaded coupling piece 25 is provided before each needle valve to enable a liquid anµsthetic to be added to the gas supply. The gases pass from valves 8 and 8<1> via tubes 39 and 391 to a common pipe which leads to a gas reservoir and to a connection for the attachment of an inhaling mask. The device may also be used for the inhalation of oxygen or the treatment of respiratory syncope by the administration of oxygen and carbon dioxide.
Patent GB-291657-A (GB)
Title: Improvements in or relating to tooth brushes
IPC: A46B9/04
Filed: 1927-09-15
Abstract: 291,657. Johnson & Johnson (Gt. Britain), Ltd., (Johnson & Johnson). Sept. 15, 1927. Grip, facilitating.-A toothbrush comprises a compact arrangement of crowned bristles mounted in a handle 7 of polygonal cross-section, near the bristles, tapering to a short portion of circular cross-section 9 at the end remote from the bristles.
Patent GB-321745-A (GB)
Title: An improved sign for use with daylight or artificial light for advertising purposes
IPC: G09F13/14
Filed: 1928-08-24
Abstract: 321,745. Winter, A. C. Aug. 24, 1928. Radial boards and like elements, rotating; actuating. - A " daylight " sign is provided with a panel 4 rotated by wind-actuated cowls or fans 7, the panel being located both between the source of light and the stencil or mirror and also between the stencil 2 and mirror 3. The fans 7 are mounted in extensions 6, 6 of the sign casing 1, the wind entering through front openings and leaving by apertures at the rear. The panel 4 may comprise a number of sections which are opaque, transparent, or coloured to produce intermittent or coloured effects. The sign may be protected by an extension 14 having a translucent cover 13.
Patent GB-741200-A (GB)
Title: Improvements in or relating to wheel brake cylinders for hydraulic brakes
IPC: F16D65/22
Filed: 1953-09-04
Abstract: 741,200. Hydraulic brakes. BENDIX AVIATION CORPORATION. Sept. 4, 1953 [Sept. 10, 1952], No. 24558/53. Class 103 (1) [Also in Group XXVI] In an hydraulic wheel brake cylinder, the piston is formed with a recess in which is nested a sealing-member which is provided with an inclined portion co-operating with an inclined portion co-operating with an inclined portion of a peripherically-located shoulder formed on the piston and which has an offset annular portion which bears against the inner wall of the cylinder. In the wheel brake cylinder assemly illustrated, the hydraulic actuator 12 is secured to the back-plate of the brake, a piston 14 is reciprocably mounted in cylinder 16 and is operatively connected by means of a thrust link 18 to a friction member (not shown). The head 20 of the piston 14 is dished or recessed from the outer periphery and is provided with a peripheral annular flange 22 to provide a bearing surface in the cylinder 16. A sealing member 25 conforming to the configuration of the piston head 20 is urged into sealing relation with the piston 14 and the cylinder 16 by means of a spreader member 30 and a spring 38. By recessing the mid-portion of the piston head 20 and nesting the sealing member 25 therein it is possible to increase the maximum retracted position of the piston 14 without interference with the inlet 27 and bleed ports 28 respectively; thus enabling a shorter wheel cylinder to be used without reducing the effective length of piston travel when compared with conventional " flatheaded " piston devices. An arrangement is described wherein the spreader member 30 is dispensed with and the sealing member 25 is retained in its position solely by means of a spring. Specification 555,156, [Group XXVI], is referred to.
Patent GB-885118-A (GB)
Title: Improvements in or relating to the manufacture of silica
Inventor: STERLING HENLEY FRANK
IPC: C03B19/14
Filed: 1957-08-02
Abstract: Silica is prepared by reacting together silane and carbon dioxide, nitrous oxide, or water vapour.  A mixture of SiH4 and CO2, N2O, or H2O diluted with A is passed into a decomposition chamber, as described in Specification 826,575, containing a body of carbon heated to 800 DEG  C. by an induction coil, which is gradually withdrawn as the SiO2 is deposited.  The mixture of silane A and H2O may be passed, in an alternative, past a voltage anti-node in a high frequency transmission line, as described in Specification 885,117, when the H2 formed is dissociated to the monoatomic form and the heat of reassociation melts the SiO2 produced which is sprayed on to a substrate.  Specifications 745,698 and 885,119 also are referred to.
Patent GB-1271618-A (GB)
Title: High resolution electron gun
Inventor: HUGHES RICHARD HENRY
IPC: H01J29/48
Filed: 1970-05-21
Abstract: 1,271,618. Electron guns. RCA CORPORATION. 21 May, 1970 [21 May, 1969], No. 24625/70. Heading H1D. An electron gun comprises tubular cathode 10, control grid 12 including aperture 25 and wired recess 42 of greater base diameter than the emitting surface 20 and accelerating electrode 14 with aperture 29, the aperture diameters being substantially equal (e.g. 29 mm.) and 3 to times greater than the spacing between the parallel plate portions of electrodes 12 and 14 (e.g. 9 mm.). Electrode 14 may have similar recess 44, bosses 26 and 30 may be included, and the electrodes mounted by bent-over tabs in glass rods 18, the cathode support, including tubular member 21. The wired recess structure allows adjustment of grid aperture diameters and spacers to yield maximum resolution for given beam current and/or maximum current for given resolution. The electrodes 12 and 14 may alternatively be cup-shaped and the aperture diameters may also be 3 to 7 times greater than the spacing between the cathode and control grid (e.g. 8 mm.).
Patent GB-634474-A (GB)
Title: Improvements in gas turbine plant adapted to operate with or without atmospheric air chiefly for the propulsion of warships
IPC: F02C1/00
Filed: 1947-09-08
Abstract: 634,474. Gas turbine plant. SOC. RATEAU, and ANXIONNAZ, R. Sept. 8, 1947, No. 24672. Convention date, Oct. 7, 1946. [Class 110(iii)] A gas turbine plant for submarine propulsion is arranged for working on open circuit with ordinary fuel and alternatively, on closed circuit with special fuel, for example, hydrogen and oxygen from storage tanks. Fig. 2 shows separate turbines, T1, T2, in parallel for driving the compressor C and propeller H. On open circuit, air is taken in at A and gases are exhausted at Ce. On closed circuit, the gases are cooled at S and liquids are evacuated by a pump P. Gaseous products may be evacuated by a pump V. The pressure in the closed system can be increased by a compressor C1. The quantity of, fluid in the closed circuit is regulated automatically to keep constant the pressure at a selected point in the compressor C. Two reservoirs are used. Gas under pressure is stored in reservoir Re and reservoir Rv is kept evacuated by a pump P. A valve d controlled by a pressure-responsive device r connects one or other of the reservoirs to the closed circuit when necessary. A turbine TAR is provided for reverse running. The turbines T1, T2 may be arranged in series, or, be replaced by a single turbine. The compressor may be in stages driven by separate turbines. The useful power turbine may be in two stages each geared to the drive of a reversible propeller.
Patent GB-1044775-A (GB)
Title: Dynamoelectric machinery
IPC: H02K11/00
Filed: 1963-06-21
Abstract: 1,044,775. Protective systems; protecting electric motors. CARRIER CORPORATION. June 21, 1963 [Aug. 8, 1962], No. 24813/63. Headings H2A and H2K. A dynamo-electric machine is protected against overheating due to excess currents by a temperature-sensitive resistance element 17 which is secured in direct electrical contact with a conductor of a winding 12 of the machine 11 so as to obtain an intimate heat conducting relationship with the winding resulting in quick response. The resistance element may have a negative temperature coefficient, but in the arrangement shown the element 17 has a positive temperature coefficient and is connected between an intermediate point on the stator winding 12 of a motor 11 and the coil 20 of a relay 21. In this arrangement the operation of a " start " switch 32 closes contacts 34 to by-pass normally open contacts 25 of the relay 21 to initially energize the motor winding 12. The switch 32 also closes contacts 33 to energize relay coil 20 so that the relay closes its contacts 25 and 24. On the release of the " start " switch, sufficient current flows from the winding 12 through the resistance element 17 to maintain the relay energized providing overheating does not occur. Figs. 4 and 5 (not shown) illustrate three-phase arrangements in which resistance elements are secured to two of the motor phase windings. Reference is also made to the provision of warning signals, automatic restarting to the reduction of load on the motor and to the use of a thyratron or transistor switching circuit as the relay. The temperature-sensitive resistance element may be soldered to a portion of a conductor of the winding from which the insulation has been stripped, the element and the portion of the conductor then being coated with insulating varnish or resin.
Patent GB-782513-A (GB)
Title: Improvements in treatments of silico-magnesia minerals
IPC: C04B35/16
Filed: 1954-08-26
Abstract: A product having a high forsterite (SiO2.-2MgO) content is obtained by mixing a silicomagnesia material containing a greater proportion of silica than forsterite with a solid or liquid carbonaceous material and heating the mixture in a furnace in an oxygen-containing atmosphere.  The reaction preferably takes place at 1800 DEG  to 1900 DEG  C., and iron oxide or iron may be added to the mineral to facilitate elimination of silica. Specified silica-magnesia minerals are drysolites (olivines), pyroxenes, enstatite, peridotites (dunit, harzburgite, wherlite), pyroxenolites, serpentine minerals and serpentine rocks, steatites, talc and magnesia basalts; charcoal is referred to as the carbonaceous material, and as the oxygen-containing atmosphere, free oxygen, air, carbon dioxide or carbon dioxide mixed with carbon monoxide or other gases may be used. Suitable apparatus for performing the reaction may be a rotary furnace, preferably rotated at such a speed that centrifugal force causes the mineral to adhere to the walls of the vessel; it may be provided with an orifice at one end situated on its axis and designed to allow a concentrated heating radiation, especially of solar origin, to pass into the interior of the vessel, or it may be heated by means of a heating resistance arranged on the axis of the vessel. The resistance may be made of graphite whereby an atmosphere consisting of carbon-monoxide and a small quantity of carbon dioxide is easily produced.  The product of the reaction may be crushed and separated from ferro-silicon or reduced iron by means of agitating tables, levigation, flotation, magnetic sorting or by chemical separation.
Patent GB-1248489-A (GB)
Title: A clad nuclear fuel body facilitating fuel leak detection in a nuclear reactor
Inventor: GROSSMAN LEONARD NATHAN
IPC: G21C17/04
Filed: 1969-05-15
Abstract: 1,248,489. Fuel elements. GENERAL ELECTRIC CO. 15 May, 1969 [15 May, 1968], No. 24885/69. Heading G6C. In a nuclear reactor fuel element leak detection system, each fuel element of the reactor core contains a different identifiable gas mixture. A leaking element is detected by an analysis of the gases in the core. An inert filler gas and an indicating gas consisting of varying proportions of two stable isotopes of another inert gas are placed within the fuel can. A plenum chamber in each fuel can contains the gases and the fission product gases. The filler gas may be helium and the indicating gas is a mixture of the neon-20 and neon-22 isotopes. Other mixtures may be helium-3 and helium-4, or Argon 36, 38 and 40.
Patent GB-1135979-A (GB)
Title: Hydrogenation process
Inventor: COFFEY ROBERT STEVENSON
IPC: C07C29/145
Filed: 1965-06-11
Abstract: 1,135,979. Hydrogenation process. IMPERIAL CHEMICAL INDUSTRIES Ltd. 2 June, 1966 [11 June, 1965], No. 24930/68. Divided out of 1,130,743. Heading C2C. [Also in Division C5] Aldehydes, ketones and organic compounds containing olefinic or acetylenic bonds are hydrogenated by contact with hydrogen in the presence of an iridium compound of formula where Z is P, As or Sb, n is 1 or 2 and the R's are alkyl, cycloalkyl, aryl, alkaryl, aralkyl, alkenyl, cycloalkenyl, alkoxy, aryloxy or heterocyclic groups attached to Z via a carbon atom. Examples describe the hydrogenation of acetone to isopropanol, hexanone-2 to hexanol-2, mesityl oxide to 4-methylpentanol-2, and acrylonitrile to propionitrile.
Patent GB-171225-A (GB)
Title: A system of concrete hollow-wall construction
IPC: E04B2/56
Filed: 1920-08-30
Abstract: 171,225. Heaven, F. H. Aug. 30, 1920. Building blocks and slabs, special shapes of.-Hollow walls are formed of slabs A, C rabbeted to engage in grooves in pier blocks D. the grooves being splayed and sunk with rounded bottoms and deeper than the nibs E so that spaces F are formed into which metal bars may be inserted. Similar blocks and slabs may be used in constructing chimney flues and recesses for fireplaces, as shown for example in Fig. 5. The recesses may be in pairs side by side or back to back, and iron bonds may be used in the joints of the pier blocks.
Patent GB-332102-A (GB)
Title: Improvements relating to tipping gear for motor vehicles
IPC: B60P1/10
Filed: 1929-08-16
Abstract: 332,102. Robertshaw, C. S. Aug. 16, 1929. Addition to 289,606. Tipping-carts. - The operating-means for and mounting of the operating-screw of a tipping- vehicle described in the parent Specification is modified so as to comprise a driving shaft f with a pinion d fast thereon which meshes with an intermediate gear a freely rotatable on a bar e having a hole through which the driving shaft f passes, the gear a driving the gear b of the tipping screw c the bar e being mounted in a frame fulcrumed about the driving shaft f and the end of the tipping screw c being carried in a frame j which swivels about the bar e.
Patent GB-668373-A (GB)
Title: Improvements in or relating to processes for drawing metal tubes and the like
IPC: B21C3/08
Filed: 1948-09-24
Abstract: 668,373. Rolling tubes. FENYVESI, Z. Sept. 24, 1948, No. 25039/48. Class 83 (iv). In a method of drawing metal tubes from cupped or tubular blanks, in which the work is simultaneously in contact with a number of passes each composed of idle rolls, some of the passes are non-circular so that the greatest reduction occurs at the centres of the individual rolls and decreases towards their ends. As shown in Fig. 1, a non- circular pass is formed by four rolls c, each having a working face with a radius of curvature R equal to twice the radius of a circle inscribed in the pass. In a modification the working surface of the rolls corresponds to the inscribed circle over the greater part of its length but bends away towards the ends. In another form the profile of each roll constituting the pass has a smaller radius of curvature over the centre portion. than at the ends, the smaller radius however being not less than the radius of the inscribed circle. Specifications 445,248 and 520,873 are referred to.
Patent GB-1379586-A (GB)
Title: Draw bars
IPC: A01D78/10
Filed: 1971-12-09
Abstract: 1379586 Draw bars C VAN DER LELY NV 9 Dec 1971 [11 Dec 1970] 25041/74 Divided out of 1379583 Heading A1P The subject matter of this invention is the same as in the parent Specification 1379583 but the claims are directed to the draw bar for coupling the machine to a single point on a towing vehicle. An auxiliary draw bar 43 is secured to the two diverging beams 1 by locking pins 49 and is pivotally connected by a hitch pin 47 to a tractor 4.
Patent GB-705559-A (GB)
Title: Improvements in eddy-current couplings, brakes and dynamometers
IPC: H02K49/04
Filed: 1952-10-07
Abstract: 705,559. Eddy-current couplings. DYNAMATIC CORPORATION. Oct. 7, 1952 [Dec. 29, 1951], No. 25059/52. Class 35. [Also in Group XXIV] An eddy-current clutch, brake or dynamometer comprises two relatively rotatable members, one of which is an eddy-current drum or drums and the other a toroidal field coil enclosed in an annular shell having flanking poles with bridging poles therebetween carried by a non-magnetic ring. Fig. 1 shows a clutch having two magnetic drums 41, 45 as the driven member and a surrounding driving magnetic field member 7. This member 7 comprises an outside ring 9 to which are welded rings 11, 13 flanking an annular field coil 15. The rings 11, 13 have claw type poles 21, 23 interdigitating with bridging poles 29 mounted on a central magnetic ring 27 which is carried by a non-magnetic ring 25. In Fig. 5 (not shown) there is only one eddycurrent drum 65 and two field coils 53, 55 mounted within cores having imbricated poles 57, 59, 61, 63. In Fig. 3 the inner member is the field system which includes a core 79, 81, 83 with claw-type teeth 85, 87 and magnetic bridging pole 89, and the external member is an eddycurrent drum comprising two magnetic rings 95, 97 separated by a brass ring 99, but, if desired, the two rings 95, 97 may be placed in magnetic contact. The drums 41, 45 in Fig. 1 can also be arranged in magnetic contact with each other. In Fig. 6 (not shown) there is a staggered arrangement of the claw-type teeth 109, 111 and of the bridging poles 115, 117. A liquid magnetic material may be used in the gap between the two rotating members. Specification 636,565 is referred to.