baber/WOPTO huggingface dataset:
Patent GB-460055-A (GB)
Title: Improvements relating to the tuning of radio receivers
IPC: H03J7/04
Filed: 1935-10-03
Abstract: 460,055. Wireless receiving circuits. COLE, Ltd., E. K., and BRADFIELD, G. Oct. 3, 1935, No. 27250. [Class 40 (v)] In a superheterodyne receiver of the kind in which automatic tuning is effected by an error detector comprising circuits tuned above and below the true I.F., each circuit is coupled or connected with separate grid electrodes of a valve arranged in parallel electron streams, whereby varying bias on the grids controls their D.C. potential. The winding P in the tuned anode circuit of the I.F. amplifier V2 is coupled to three circuits S, X, Y, of which S supplies the signal demodulator Dl of a valve V3. Circuits X and Y are the error detector circuits, tuned 5 k.c. above and below the I.F., circuit V being connected between grid e and cathode of V3 while circuit X feeds diode D2 the rectified potentials across the load resistance R3 being impressed through resistances R1, R2 on the grid d ; D3 is the A.V.C. rectifier. Grid d is connected over condenser C1 to the frequencydetermining circuit of the local oscillator of the frequency changer V1. Energization of circuit Y due to tuning error on that side reduces current to the anode a of V3, the potential of which thus rises, thereby increasing the amplification of the side d of the same valve. The amplification of side d will fall when circuit X is energized so that the amplification rises or falls in dependance on departure from tune, the frequency of the local oscillator being then automatically adjusted thereby in compensatory sense. The two grids e, d may be separated by an earthed screen; or valve V3 may be a double triode with externally connected diodes.
Patent GB-1476313-A (GB)
Title: Growth of synthetic diamonds
IPC: C30B1/00
Filed: 1973-06-07
Abstract: 1476313 Growing diamond crystals NATIONAL RESEARCH DEVELOPMENT CORP 29 May 1974 [7 June 1973] 27293/73 Heading B1S [Also in Division Cl] A method of growing a diamond crystal comprises bombarding the diamond with carbon ions of sufficient energy to penetrate the diamond crystal, and cause internal crystal growth, the temperature being such that the diamond crystal structure is maintained during growth. Preferred conditions are carbon ion energies of 1-100 keV and temperatures of at least 600‹C. Impurity ions such as nitrogen ions may be present in the carbon ion beam, to produce e.g. colours
Patent GB-1118042-A (GB)
Title: Method of producing dry air
Inventor: CRAMPTON FELIX JEREMY PHILIP
IPC: F25J3/08
Filed: 1964-07-07
Abstract: Moist air is contacted directly with a liquefied component of the ultimately dried air to freeze out moisture contained therein. Air is cooled by direct contact with liquid oxygen in tower (2) (see Fig., not shown) to well below freezing point and the frozen moisture removed in separator (4).  The stream then passes in indirect heat exchange with the product streams to liquefier (9). Liquefied oxygen leaves by line (11) and is split into two streams, one (line (12)) together with cold nitrogen in line (10) cooling incoming air, and the other (line (3)) being returned to lower (2) to treat the moist air.
Patent GB-735349-A (GB)
Title: Improvements in the means of protection of marine vessels against foundering througheither external or internal damage to their hulls
IPC: B63B43/18
Filed: 1953-10-06
Abstract: 735,349. Ships. LAW, E. A. May 14, 1954 [Oct. 6, 1953], No. 27386/53. Class 113 (1). In a marine vessel having over the lower internal sides and bottom of the hull a covering of resilient cushions which extend from stem to stern and rise slightly above the highest water line, the cushions are held against the hull by malleable plates connected to the hull by nuts and bolts.
Patent GB-1047753-A (GB)
Title: Improvements in or relating to radiation shield assemblies for high temperature furnaces
Inventor: WILLIAMS NEVILLE RONALD
IPC: C21D9/00
Filed: 1963-07-10
Abstract: 1,047,753. Radiation shield assemblies. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. June 23, 1964 [July 10, 1963], No. 27428/63. Heading F4B. A radiation shield assembly, particularly for use in a high-frequency induction furnace comprises one or more coils of sheet tantalum, having a coating of alumina strips 4 along one surface to separate adjacent metal surfaces, to reduce induction heating, placed inside a tube 2 of graphite, refractory metal or ceramic material, standing on a disc 3 of ceramic material or refractory metal or graphite coated with ceramic material. When graphite or metal tubes or discs are used, sections are removed from them to minimize induction heating in the shield assembly.
Patent GB-339959-A (GB)
Title: Improvements in metallic packings for stuffing boxes and the like
IPC: F16J15/28
Filed: 1929-09-10
Abstract: 339,959. United Kingdom Self-Adjusting Anti-Friction Metallic Packing Syndicate, Ltd., and Brooks, F. G. Sept. 10, 1929. Packing, metallic; inserting and extracting; glands; grit, excluding.-In packing of the type in which carrier rings E containing packing-rings D are pressed towards the gland C by a spring S, the carrier rings are arranged in a casing F, the outer end f<7> of which is a sliding fit in the bores of the stuffing-box and of the gland, while the intermediate portion f<1> is of reduced diameter, so that, when the gland C is removed, the spring S presses the casing F clear of the stuffing-box. The casing F is formed with a spigot f<2> which enters the spring S. The outermost ring E is preferably a sliding fit in a bore c<3> of the gland. A yoke G carrying a lubricating-pad is secured to the stuffing-box by means of one of the gland bolts g<1>. Specification 321,179 is referred to.
Patent GB-722487-A (GB)
Title: Multiple outlet field for a multi-switch of the cross bar type
IPC: H01H67/26
Filed: 1952-10-31
Abstract: 722,487. Electric selectors. STANDARD TELEPHONES & CABLES, Ltd. Oct. 31, 1952 [Nov. 29, 1951], No. 27440/52. Class 40 (4). A vertical stack of individual switches 2, 3 with common control elements and a multiple field of outlet wires in the form of substantially rigid and parallel straight conductors extending through the individual switches has the switches divided into two groups performing different functions, such as line-finding and final selection, the multiple field of outlet conductors being split lengthwise into two sub-fields, one extending over one group of switches and the other in prolongation of the first over the other group of switches. The invention is applied to multiple-switches of the type described in Specification 722,438, in which conductors such as a1, b1, c1 d1, e1 in an individual switch 2 are connected by resilient contact extensions a11 b11, c11, d11, e11 to vertical bare wire outlets A1, B1, C1, D1, E1. The outlets A1-D1 extend over all the switches but the outlets represented by E1 extend over only the upper switches which are used for line finding, while corresponding outlets E<1>1 extend over the lower switches such as 3 which are used as final selections.
Patent GB-282194-A (GB)
Title: Improvements in apparatus for branning or cleaning tinplates
IPC: C23G5/00
Filed: 1926-11-02
Abstract: 282,194. Richards, J. I., Richards, O. G., Thomas, J., and Richings, J. Nov. 2, 1926. Cleaning. - In a machine for branning or cleaning tin plates of the type in which the plates are gripped by automatically-controlled spring-grippers which are mounted on rotary arms and are adapted to pull the plate through one or more semi-circular troughs, the arms are adapted to oscillate in the trough or troughs, and means are provided for opening or closing the gripping devices which receive, hold, and pull the plate through the bran and also for releasing and delivering the plate after its passage through the bran &c. The sheet s to be fed through the machine rests on a ledge y<12> in a feed box y, and when the lever y<4> is moved upwards by the contact therewith of the jaw p of the gripper, the pivoted plate y<2> and fingers y<3> are moved and push the plate s forward on the ledge y<12> until it is opposite the opening between the jaws p, q of the gripper. As the fingers y' have a longer stroke than the plate y<2> the sheet, s is moved forward by the fingers y<3> until it is nearly vertical and consequently drops between the jaws p, q. The movement of the arm o is then reversed, and owing to the movement away from the stop x of the arms v, the jaw q is moved forward by the spring r and is pressed against the jaw p. The arm is mounted on a shaft c which is oscillated in opposite directions by the engagement of a spur wheel n with a toothed quadrant m which is moved by a connecting rod l connected to a crank k mounted on a shaft i<1> which receives its motion from a shaft d by a shaft g and worm h. When the arm o has moved the plate s through the trough b, the sheet passes up between the guides z and a bent double-armed lever w on the arm o comes in contact with rollers 4 adjustably mounted on stanchions Z thus opening the jaws p, q and releasing the plate. The plate then passes down the guides z into the trough band between the jaws p<1>, q<1> on an arm o<1> operated in similar manner to the arm o. The plate is thus drawn through the trough b<1> and released when it is between the guides z<1>. Modifications of the construction of the grippers and the adjustable stops are described and one of the troughs b, b<1> may be omitted.
Patent GB-389885-A (GB)
Title: Improvements in or relating to cutter picks and pick boxes for coal cutting machinesand the like
IPC: E21C35/19
Filed: 1931-10-03
Abstract: 389,885. Coal-cutting &c. machines. MOORE, M. S., The Gables, Worcester Road, Malvern Link, Worcestershire. Oct. 3, 1931, Nos. 27543/31 and 15234/32. [Class 68 (i).] The picks of coal-cutting and like machines are wedge-shaped in cross section and an expansible clip is interposed between the sides of each pick and the socket therefor to hold the pick in a grip which tightens as the pressure on the pick point increases. In Figs. 1, 2 and 5 the pick stem 1 tapers from front to rear and the inner faces 4 of the clip 3 similarly converge, while projections 5 on one part enter grooves 7 in the other part to prevent relative longitudinal movement ; the legs of the clip may be separate or formed by bending a single resilient strip of metal which may be of segmental or quadrangular section. Screws 12, Fig. 7, may prevent rotation of the clip in the pick box, or longitudinal grooves 10, Fig. 8, may be engaged by the picks to prevent rotation. Serrations may be formed on the clip or in the pick box to increase the grip ; in Fig. 8, the serrations 11 are formed by threading with a tapered tap. In Figs. 9, 11 and 13, the pick stem and the inner faces of the clip also taper longitudinally, a rearward toe 14 on the pick engaging a groove 10 in the pick box and shoulders 15 above the toe engaging shoulders 17 on the clip to link the parts longitudinally.
Patent GB-172767-A (GB)
Title: An improved coupling or clamping screw
IPC: H01R4/36
Filed: 1920-09-28
Abstract: 172,767. Newham, L. C. Sept. 28, 1920. Coupling.-A clamping-screw for use in electric couplings &c. which does not twist the wires &c. E with which it engages, comprises a main screw A having a smaller screw B threaded into its end and a body portion D. The head of the screw B is less than the diameter of the screw A and the thread is finer. In a modification the screw A has an extension smaller in diameter and having a finer thread on which an internally-threaded cup-shaped member is fitted.
Patent GB-816978-A (GB)
Title: Conveyor trains
IPC: B61D11/00
Filed: 1957-09-02
Abstract: 816,978. Conveyers. UNTERTAGEMASCHINENBAU G.m.b.H. Sept. 2, 1957 [Sept. 26, 1956; July 4, 1957], No. 27560/57. Class 103(4) A conveyer train hauled by a locomotive or drawn by a drum and cable or endless chain and for use in opencast workings, sand-pits, &c. is composed of undercarriage units each comprising a pair of wheels mounted on an axle supporting a shaft a, Figs. 1, 3, carrying, through cradles q, Fig. 5, arcuate rungs e, said units being coupled together by ball-and-socket joints on the shafts a, so that the rungs form a support for a continuous trough-shaped carrier f of rubber for the material to be conveyed. The units of the train may be tilted to discharge the material by the engagement of the hubs i of the wheels with helicallytwisted, U-section rails k<SP>1</SP>, Fig. 13, disposed at the discharging position. The rungs are placed on the cradles and retained in position laterally by recessed members s which, however, permit rocking movement of the rungs at right-angles to the shaft. The cradles have king-pins p free to turn in holes o<SP>1</SP>, o<SP>11</SP> in the shafts. In a modification, the carrier is formed of sheet steel plates r, Fig. 7. supported by rungs t mounted on the shafts a. Each sheet, together with its rung, is tiltable about a pivot u to discharge the material by means of a roller v<SP>1</SP> carried by the sheet and its rung and adapted to ride on to a raised guide rail disposed at the discharging position. Other steel trough sections are described with an intermediate elastic trough-shaped overlap, with alternate trough sections in fish-scale manner, or with each alternate section extending beneath the ends of the two adjacent sections.
Patent GB-603395-A (GB)
Title: Improvements in and relating to clocks
IPC: G04C1/08
Filed: 1945-10-19
Abstract: 603,395. Clocks. GRASEBY, R. C. Oct. 19, 1945, No. 27565. [Class 139] A clock comprises energy-storing mechanical means tending to rotate a shaft operatively connected with the hands, rotatable means operatively connected with the shaft, an element which when rotated will alternatively prevent and permit rotation of the said means and thereby of the shaft, and constant speed electrical driving means for the said element. As shown in Fig. 1, a weight, not shown, tends to rotate a drum 9 which is connected through gearing 2 to the minute shaft of a clock which shaft is connected through gearing 16 to a shaft 34. A roller 19, having two notches 20 and 21 angularly displaced with respect to each other by 180 degrees, is driven by a synchronous motor 26, connected to the mains 30, through gearing 25, sun wheel 24, planet wheel 23 and gearing 22. The roller 19 as it rotates co-operates with two toothed discs 17 and 18, Fig. 2, on the shaft 34 to alternatively permit and prevent rotation of the shaft 34. Upon failure of the mains supply the switch 32 closes and an auxiliary synchronous motor 29 which is supplied with pulsating continuous current at a frequency determined by a tuned reed and dry battery unit 33 drives the roller 19 through gearing 28, sun wheel 27 and planet wheel 23. The arrangement is such that the synchronous motor 29 rotates the roller 19 at the same speed as the synchronous motor 26 does. The drum 9 is also connected through gearing to a cam disc 11 which co-operates with a pin 12 on a lever 13 carrying a mercury switch 15 in such a manner that when the weight has descended a small distance the cam disc 11 has rotated sufficiently to tilt the lever 13 and close the switch 15. A synchronous motor 7 then, through gearing 6, sun wheel 5, planet wheel 4 and sun wheel 8, rotates the drum 9 in the reverse direction to wind the weight on the drum and rotate the cam disc 11 backwardly to open the switch 15 again. During this time the shaft 34 is constantly under the driving force of the weight. Specification 549,965, [Group XXXV], is referred to.
Patent GB-1321727-A (GB)
Title: Flow forming machines
IPC: B21C1/24
Filed: 1971-06-11
Abstract: 1321727 Rolling mills LEIFELD U CO WERKZEUG U MASCHINENFABRIK 11 June 1971 [12 June 1970] 27585/71 Heading B3M A flow forming machine which can be used for forming a tubular work piece (shown dotted) by means of rollers 12, includes a frame 10 which carries the rollers and which is slidably mounted in a machine bed 11. The workpiece is rotatably held in a chuck, while the frame 10 is moved axially of the workpiece by drive units 13. The units are disposed symmetrically about the workpiece axis so that no tilting movements are imparted to the frame during its movement. Two or three units may be used, and they may be driven hydraulically, pneumatically, mechanically, electromotively or by a combination of these methods. The bed 11, which can be arranged horizontally or vertically, may be formed in one or more pieces, and may be constructed from concrete.
Patent GB-408251-A (GB)
Title: Improvements in or relating to benzyl cellulose
IPC: C08B11/20
Filed: 1932-10-04
Abstract: Benzyl cellulose is purified by extraction with hot or boiling ethyl alcohol or other lower alcohol, for example, boiling industrial spirit.  The purification may be carried out during manufacture at the final washing stage; or the benzyl cellulose after manufacture may be reduced to a fine powder, and then extracted.  By the extraction, resinous products produced during benzylation are removed, and articles made from the purified product, such as dental plates, have a greater resistance to water and do not develop opacity under moist conditions.  Specification 327,714, [Class 2 (ii)], is referred to.
Patent GB-172772-A (GB)
Title: Improvements in trolling spoons
IPC: A01K85/10
Filed: 1920-09-29
Abstract: 172,772. Moore, J. T. Sept. 29, 1920. Trolling-tackle.-Trolling spoon apparatus comprises a hub, rotatably mounted upon a shaft, and means for detachably securing a spoon to the hub without having to remove the hub from the shaft. In one form, a hub 5, formed of a single strip of material, is provided with ovalshaped openings through which passes a shaft 1, the ends of which are bent to form loops 2, 3. The ends 6, 7 of the hub, the shank 9 of a spoon 10 and a decoy-holding strip 11, having a bent portion 12 for retaining a decov 13, are secured together by a bolt and nut 8, the ends of the spoon 9 and strip 11, round which passes the hub material, being forked to provide rotational bearing engagement with the shaft 1. A spring 15 held between a shoulder 4 and the end loop 3 can be pulled upwardly and the loop opened to replace a hook or decoy.
Patent GB-1497049-A (GB)
Title: Screw propulsion of ships
IPC: B63H5/18
Filed: 1975-06-20
Abstract: 1497049 Auxiliary propellers STONE MANGANESE MARINE Ltd 20 June 1975 [21 June 1974] 27761/74 Heading B7V  A ship has a main propeller 5, and an auxiliary propeller 1, e.g. to improve the wake ahead of the main propeller. The propeller 1 has a controllable pitch, and is driven by an electric motor 3 powered by a generator(s) driven by an I.C. engine(s) or steam turbine(s) supplied by a boiler or waste-heat boiler.
Patent GB-1378505-A (GB)
Title: Detection of electrical or magnetic properties of metal strip
IPC: G01R33/12
Filed: 1971-06-14
Abstract: 1378505 Electro-physical testing BRITISH IRON & STEEL RESEARCH ASSOCIATION 8 June 1972 [14 June 1971] 27820/71 Heading G1N An electrical e.g. resistivity or magnetic e.g. permeability property of a moving metal strip e.g. billet from a rolling mill is detected by passing the strip 25 partly around a hollow, non-ferromagnetic rotatable cylinder 6 within which is fixedly mounted one or more devices 9 for detecting the property. A plurality of devices 9 are each embedded in a resin plug 10 inserted in a non- rotatable cylinder 4 mounted on shaft 12 so that the devices extend to the surface of cylinder 4, a lubricant being supplied under pressure in the space between the two cylinders. Each device 9 for detecting permeability, Fig. 3, comprises two H-shaped manganese-zinc ferrite cores 14, 15  provided with differentially wound search coils 16, 17 wound only on one arm 20 of each core and A.C. energized coil 23 wound on cross-piece 22 (only core 14 windings shown). The magnetic flux induced between the ends of arms 20, 21 nearest to strip 25 are modified by the presence thereof and a voltage is induced in search coil 16 different to that in coil 17, the resultant voltage being a measure of the permeability. The coils in core 15  give the quadrature value of permeability. The shape of the steel strip is affected by the internal tensile stresses thereof which in turn affect the magnetic properties across the width of the strip. Thus measurements of magnetic properties indicate the shape of the strip and can be used to control the rolling mill.
Patent GB-1506297-A (GB)
Title: Connection for shafts of adjacent assemblies
IPC: F16D1/08
Filed: 1975-07-02
Abstract: 1506297 Shaft couplings MOTOREN-UND TURBINEN - UNION MUNCHEN GmbH 2 July 1975 [27 July 1974] 27822/75 Heading F2U In a shaft coupling between two shafts one of which is supported in two bearings and the other in one bearing (Fig. 1, not shown), the end of the. shaft with one bearing is engaged in a hollow end of the shaft with two bearings with a positive connection between the shaftsfor torque transmission. In the embodiment shown in Fig. 2 the shafts are splined together at 13 and are centred relative to one another by cylindrical portions 14 and 15. Axial separation is prevented by a flange 16 and a bolt and facilitated by a screw-thread 20, engageable by a tool. In an alternative embodiment (Fig. 6, not shown) the splines 13 and portion 14 are replaced by interengaging shaft portions of polygonal crosssection (there being no portion 15) and in a further embodiment (Fig. 8, not shown) the portions of polygonal cross-section are frustoconical. The coupling may be in a gas turbine.
Patent GB-1155523-A (GB)
Title: A Process for the Production of Finely Divided Organically Modified Silicas
Inventor: BESCHKE HELMUT
IPC: B01J39/17
Filed: 1967-06-16
Abstract: 1,155,523. Organically - modified silica. DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT. 16 June, 1967 [18 June, 1966], No. 27962/67. Heading C1A. Finely-divided organically modified silica is precipitated, preferably at 50-90 C., from a silicate solution, e.g. water glass, by an inorganic or organic acid in the presence of one or more water-soluble organic polymers capable of undergoing modification of their properties by chemical reactions and of combination with silica, e.g. polyvinyl alcohol, polyethylene imine, polyacrolein, polymethacrylic acid, polyethylene oxide, polyvinyl pyrrolidone, polyvinyl-3- methyl pyrrolidone, vinyl pyrrolidone/vinyl acetate copolymers, polyacrylamide. The polymer(s) may be dissolved in the reaction mixture before precipitation or gradually added thereto during precipitation; in some cases a pure silica core may be formed around an organicallymodified shell. The polymers may be caused to undergo organic reactions, e.g. substitution, addition, salt or complex formation, or may be refined by substantive, reactive or leuco dyes at any time after silica is first formed (although not necessarily precipitated): examples of such reactions are given.