baber/WOPTO huggingface dataset:
Patent GB-1198455-A (GB)
Title: Welding System for Tubular and Other Articles with Weld Penetration Control
IPC: B23K9/028
Filed: 1967-08-31
Abstract: 1,198,455. Automatic control of arc welding. WELDING RESEARCH Inc. Aug.31, 1967 [Oct.17, 1966], No.39817/67. Heading G3R. In an arc welding system having a movable electrode, weld penetration is maintained constant by a synchronously operated radiation sensor 34 which regulates the welding current. The system may be used for joining tubes 10, 11 by a motordriven torch, the sensor directed at the reverse side of the workpiece. Alternatively a number of switched sensors Fig. 3 (not shown) may cover the inside circumference. A Zener voltage 70 is subtracted from the valve 65 anode voltage and applied to a cathode follower 75, the output 80 of which is compared with a voltage at potentiometer 82, the error being passed to proportional and integral amplifiers 92, 93 to control the welding current through units 94, 95. The sensitivity may be altered by a switch 58. A resistor 77 and capacitor 78 pass back highfrequency variations to reduce the amplifier gain hence smoothing rapid changes. A meter 86 indicates the level of control voltage.
Patent GB-900759-A (GB)
Title: Improvements in or relating to variable speed drives
Inventor: FIELDHOUSE JOHN
IPC: F16H61/02
Filed: 1959-11-24
Abstract: 900,759. Change-speed control. CARTER GEARS Ltd. Feb. 17, 1961 [Nov. 24, 1959], No. 39825/59. Class 80 (2). In an arrangement for maintaining a constant speed ratio between the output shafts 7, 8 of a variable-speed drive assembly in which the shafts are driven by motors 1, 2 through variable-speed gear units 3, 4, the shafts 7, 8 are connected to the input shafts of a mechanical differential unit 9 whereby any difference of speed results in rotation of the differential output shaft 12 to operate the control member 13 of the gear unit 4 through a power amplifier 14 and associated feed-back 15. Member 13 is operated by an electric motor through switches 23, 24 according to the direction of rotation of the shaft 12 which is connected to the switchactuating member 25 through a slipping friction drive. Switches 23, 24 are carried on a plate 22 (not shown) pivotally mounted on shaft 12 and provided with a feed-back connection 31 whereby the switching mechanism is disconnected upon shaft 12 ceasing to rotate. The arrangement may be applied to the drive for a winding drum, Fig. 2 (not shown).
Patent GB-1125783-A (GB)
Title: Display board
IPC: G09F11/02
Filed: 1965-09-17
Abstract: 1,125,783. Changing signs. THREE STAR HOLDINGS CORP. Inc. 17 Sept., 1965 [17 Sept., 1964], No. 39828/65. Heading G5C. In interleaved slat apparatus one set of slats is fixed, each of the other sets being lifted sequentially into display position by an associated pivoted cam-controlled lever 28 via a lug 26 fastened to a cross-bar 23 joining uprights such as 9 on which the slats are secured. Each lever rests on a cam 33 (Fig. 11, not shown), the assembly of cams being fixed coaxially together and rotated intermittently to change the display by means of a coaxial toothed wheel 35 (Figs. 12, 13, not shown), engaged by a spring- urged pawl in a lever 36 which is oscillated by a crank 41 driven by an electric motor 50. Each cam is divided into a number of sectors equal to the number of sets of slats and to the number of teeth on wheel 35. The cams are profiled to lift the cross-bars successively so that the display position of each movable slat is slightly higher than that of the corresponding fixed slat, and as a new slat comes up those behind are dropped to the level of the fixed slat (Figs. 1-3, not shown). The fixed slats 1 may be wrapped about the frame 10 and be adjustably tensioned.
Patent GB-1124814-A (GB)
Title: Arrangement for storing binary information
IPC: G11C8/02
Filed: 1965-09-17
Abstract: 1,124,814. Semi-conductor plural stable state circuits. TELEFONAKTIEBOLAGET L. M. ERICSSON. 17 Sept., 1965 [18 Sept., 1964], No. 39874/65. Heading H3T. [Also in Division G4] A bi-stable circuit is formed of four resistor elements M having the property of changing from high ohmic condition to low ohmic condition when the voltage across them exceeds their striking voltage and remaining in the low ohmic condition when the current through them is reduced to zero from a normal value, but reverting to a high ohmic condition when the current is reduced to zero from a value essentially exceeding the normal value. Two resistor elements are connected in series in each of a pair of lines X20, X21 the centre points of each of the resistor pair being connected one each to a second pair of lines Y20, Y21. The pair of lines X20, X21 is connectible at one end to a pulse source W and at the other end to a pulse B of opposite polarity to the pulse source W. Either of the second pair of lines is also connectible to the pulse source B and both lines are connected to a reading element D20, D21. To write data in the memory sources W and B are connected to the appropriate lines X20, X21 and one of the lines Y20, Y21 is connected to source B, line Y20 being connected if a " 1 " is to be stored and Y21 is a " 0 ". The voltage applied is then sufficient to first switch, e.g. element M210 to a low voltage state and then element M220. For reading the line connectible to source B is earthed and the pulse W causes current to flow via a low impedance element to the appropriate half of means D20, D21.
Patent GB-352431-A (GB)
Title: Improvements in or relating to recording devices particularly for use in games
IPC: A63F1/18
Filed: 1929-12-31
Abstract: 352,431. Scoring and marking games ; match boxes. GJUTERIAKTIEBOLAGET FUNDATOR, 39, Kronobergsgatan, Stockholm. Dec. 31, 1929, No. 39921. Convention date, July 10. Void [Published under Sect. 91 of the Acts]. [Class 132 (ii).] In a marking device which may be used in connection with games, the symbols for the quantities to be marked are provided on a number of strips, fillets, bands or the like adapted to be moved into and out of a suitable casing, each of the strips &c. preferably carrying a number of the symbols. The marking device is shown combined with a match-box and comprises a casing 1 with a sliding receptacle 4 for the matches and a double-walled top 2 within which a number of strips 3 may be slid so as to expose at orifices 8 the various symbols marked on the strips, e.g. the letter T followed by a row of numerals to mark tricks, S to mark the suit, I to indicate first game and D for double. The protruding ends of the strips are bent upwardly to facilitate manipulation. A roulette wheel 7 is pivoted within the base of the box and has a roughened portion 13 whereby it may be set in rotation, the symbols on the wheel being observed through an orifice in the base.of the box.
Patent GB-948029-A (GB)
Title: Portable drilling machines
Inventor: GOODWIN JOSEPH TREVOR
IPC: B25D11/10
Filed: 1961-11-08
Abstract: 948,029. Drilling machine details. JOHN M. PERKINS & SMITH Ltd. Nov. 5, 1962 [Nov. 8, 1961], No. 39944/61. Heading B3C. [Also in Division B4] In, or for, a portable drill, a mechanism comprises a housing 1 for connecting to the drill casing 4, a part 6 fixed in the housing, having a number of recesses 20 in its end face, a spindle 9 extending through the part, to take a chuck at 11, and adapted to connect with the drill spindle 5 to permit limited relative axial movement, a disc 17 surrounding the spindle, having a number of holes containing members 19 which register with recesses 20 at one angular position of the disc, external means 23 for moving the disc angularly, a shoulder 14 on the spindle carrying angularly spaced cam means 22, axial percussive movements being caused to the spindle when the members 19 project from the disc and coact with cam means 22. A dowel 8 secured in part 6 engages a recess 18 to limit the angular movements of disc 17 and means 23 is screwed to disc 17 at 24. The housing interior may be lubricated through a bore 26 and the casing 4 contains an electric motor and a reduction gear (not shown).
Patent GB-883481-A (GB)
Title: Novel unsaturated aliphatic chlorine compounds and a process for the manufacture andconversion thereof
IPC: C07C17/16
Filed: 1959-11-25
Abstract: The invention comprises 1-chloro-nonadecatetrayne-(4,7,10,13) and the corresponding tetraene, and their manufacture by condensing decadiyne (1,4) with 1 - bromo - 9 - chloro - nonadiyne-(2,5) in a Grignard reaction, and if desired, partially hydrogenating the tetrayne to the tetraene, e.g. with about 4 molar proportions of hydrogen and a Pd/Pb/CaCO3 catalyst containing 5% Pd.  The Grignard reaction is preferably effected in the presence of a cuprous salt.  The 1-chloro-nonadecatetraene-(4,7,10,13) may be carboxylated, e.g. with Mg and CO2, to arachidonic acid.  Decadiyne-(1,4) is prepared by condensing heptyne-1 with propargyl halide in a Grignard reagent, e.g. in ether in the presence of a cuprous salt.  Methyl arachidonate is prepared by reacting arachidonic acid, obtained as above, with diazomethane, and is hydrogenated to methyl arachidate.  Nonadecyl chloride is obtained by reduction of the tetraynyl chloride, and is converted to the cyanide and so to arachidic acid.  Specification 883,482 is referred to.
Patent GB-1073007-A (GB)
Title: Process for the recovery of palladium from palladiumcontaining acid solutions
IPC: C22B11/00
Filed: 1964-10-01
Abstract: Palladium is recovered from a solution of a non-oxidizing acid containing palladium ions by a process wherein the palladium ion-containing acid solution, e.g. solutions containing palladium chloride dissolved in aqueous hydrachloric acid, is treated with hydrogen in the presence of a palladinated carrier so that metallic palladium deposits on the palladinated carrier, and the palladium is subsequently dissolved off the carrier by treating it either with an oxidizing acid, e.g. nitric acid or with a non-oxidizing acid in the presence of an oxidizing agent, e.g. chlorine, hydrogen peroxide, oxygen or air.  Palladium can also be separated from an acid solution containing free chlorine.  In the Fig. (not shown) a palladium ion-containing acid solution is continuously introduced at the top of tower 1 filled with palladinated packings, and discharged at the bottom. Palladination of the tower packings is facilitated by preplatinization. Hydrogen is introduced at the bottom of the tower through a gas distribution device, and discharge at the top. Palladium is dissolved off the packings when the maximum amount of palladium has been deposited. After discharging the concentrated palladium solution, the packings may be reactivated by filling the tower with acid and treatment with hydrogen.
Patent GB-1374950-A (GB)
Title: Moving-coil current measuring systems
IPC: G01R11/02
Filed: 1973-08-24
Abstract: 1374950 Moving coil measuring instruments SIEMENS AG 24 Aug 1973 [29 Aug 1972] 40133/73 Heading G1Q A moving coil current measuring instrument e.g. an optical oscillograph or mirror galvanometer has a mirror 2 attached to the coil suspension and a single moving coil 5 is fixed to the suspension 1 at a small angle such that the suspension passes through the coil aperture. The arrangement avoids the need for coils on each side of the suspension to ensure mechanical balance.
Patent GB-992099-A (GB)
Title: Self-cleaning heat transfer surface in a rotary regenerative heat exchanger
IPC: F28D19/04
Filed: 1963-10-14
Abstract: 992,099. Thermal regenerators. COMBUSTION ENGINEERING Inc. Oct. 14, 1963 [Oct. 23, 1962], No. 40380/63. Heading F4K. Heat transfer material provided in the rotor compartments of a thermal regenerator comprises a plurality of closely-spaced rods 34 on which loosely-fitted movable elements such as collars 36 or spring-like members 44 are provided, these elements moving to and fro along the rods as the rotor rotates and hence preventing the accumulation of foreign matter such as soot or ash on the rods. The rods may be hollow or solid and of circular or rectangular cross-section, or shaped as shown in Fig. 7.
Patent GB-919885-A (GB)
Title: Improvements in hard sintered materials
Inventor: TRENT EDWARD MOOR
IPC: C04B35/58
Filed: 1959-11-30
Abstract: The wear resistance of alumina machine tools is increased by the addition of from 4 to 20% by weight (preferably 8 to 10%) of one or more nitrides of the metals Ti, Zr, HF, V, Nb, Ta and Cr. The alumina is ball-milled for several days in a stainless steel ball mill with tungsten carbide balls in water or acetone to obtain small particles. The milled powder is dried, sieved, mixed with a lubricant (e.g. paraffin wax), pressed and sintered at 1600-1750 DEG  C. in a tungsten crucible, in vacuo or an inert atmosphere.  Impurities (i.e. grinding detritus) may be present in the finished article.  According to the Provisional Specification, the nitrides of molybdenum and tungsten may also be used.ALSO:The wear resistance of alumina machine tools is increased by the addition of from 4% to 20% by weight (preferably 8% to 10%) of one or more nitrides of the metals Ti, Zr, Hf, V, Nb, Ta and Cr. The alumina is ball-milled for several days in a stainless steel ball mill with tungsten carbide balls in water or acetone to obtain small particles.  The milled powder is dried, sieved, mixed with lubricant (e.3. paraffin wax) pressed and sintered at 1600 DEG -1750 DEG C. in a tungsten cruicible in vacuo or an inert atmosphere.  Impurities (i.e. grinding detritus) may be present in the finished article.  According to the Provisional Specification the nitrides of molybdenum and tungsten may also be used.
Patent GB-1383709-A (GB)
Title: Treatment of metal melts
IPC: F27D27/00
Filed: 1972-09-01
Abstract: 1383709 Stirring metal melts HOESCH AG 1 Sept 1972 [18 Sept 1971] 40701/72 Heading B1C [Also in Division F4] A stirrer for metal melts has a rotatable vertical shaft comprising a tube 11 at least partly clad .by refractory material as at 12, and a horizontal beam stirrer 13 of refractory material 12', there being a tube and bore 16, 131 along the axis of the shaft and through the beam for the admission of a treating gas. The beam may be reinforced by internal struts 14, 14' extending from the tube 11. In a modification (see Figs. 3 and 4, not shown) the tubular shaft may terminate downwardly in a widened portion forming a socket (211) for detachably receiving a spigot portion (231) of the stirrer beam.
Patent GB-950174-A (GB)
Title: Improvements in roofing or wall tiles
IPC: E04D1/02
Filed: 1962-10-29
Abstract: 950,174. Roofing tiles. L. L. BESSE. Oct. 29, 1962 [Oct. 27, 1961], No. 40743/62. Heading E1B. A roofing or wall tile of plastics or thin metal is formed with corrugations 7 and at each of two opposite edges with pairs of flanges 1, 2 and lug formations 3, 4 so that tiles interlock between courses. The lugs are formed with holes to receive pins or wires securing the tiles together and to supporting beams. Ribs and grooves may be provided in the corrugations 7 to assist drainage and a transverse step 11 may be formed as a reinforcement. The corrugations on a single tile may be of different widths. The tiles are formed with lips 9, 9<SP>1</SP> on their side edges by which the tiles are overlapped in rows.
Patent GB-1332328-A (GB)
Title: Production of olefins
IPC: C07C7/173
Filed: 1970-08-26
Abstract: 1332328 Preparing alpha-olefines ETHYL CORP 26 Aug 1970 [27 Aug 1969] 41166/70 Heading C5E Olefines in the range C 0  to C 16  are made by a stepwise adding, growing or polymerizing reaction of an olefine of lower molecular weight in the presence of a metal alkyl growth adjuvant, and the product worked up by: (a) flashing off olefines of product range and lower, (b) transalkylating organometallics in the residue with molecules of lower olefine, (c) converting the product from (b) to a mixed vapour-mist system with C 16  + olefines in the mist phase and more volatile materials in the vapour phase, (d) separating the vapour and mist phases in an inertial separator, and (e) recycling vapour from (d) to the initial reaction system. As shown, ethylene and trialkylaluminium are fed to a growth system (10), the product is distilled at 18, the lightest fraction (ethylene) being recycled (20), whereas other distillate fractions (olefines from C 4  to C 14 ) are taken off, and the bottoms, containing higher olefines and trialkyaluminium passed to 11, where they are transalkylated with ethylene, to convert other trialkylaluminiums to triethylaluminium. The transalkylated material is again distilled at 19, the lightest fraction (ethylene) being recycled (20) while other distillate fractions (olefines up to C 8 ) are taken off, and the bottoms heated at 27 to vaporize lower olefines and triethylaluminium, but leave higher olefines in mist form. The two phases are separated in a centrifugal separator 12, and passed through pressure controls 28 and 29, e.g. throttling valves. Part or all of either of the resulting streams (13 and 14) may be further distilled, or stream 13 (containing the triethylaluminium) may be recycled to 10 without distillation. A small proportion of the stream passing from 18 to 11 may be bled off to prevent the build-up of undesirable materials. This bleed stream can be combined with the stream 14 and processed to alcohols.
Patent GB-926140-A (GB)
Title: Line-at-a-time printer
IPC: B41J1/32
Filed: 1961-11-17
Abstract: 926,140. Typewriters &c. CREED & CO. Ltd. Nov. 17, 1961 [Nov. 18, 1960], No. 41254/61. Class 100 (4). A line-at-a-time printer comprises a number of type rings 1 loosely mounted on a common, continuously-rotating driving shaft 2 to which they can be coupled, e.g. magnetically, each ring having a tooth gap 6 between each type face 5 with which gaps a toothed ratchet wheel 8 engages, and each wheel 8 being capable of being locked by a pawl 18 to stop rotation of its type ring 1 when the required type face is in printing position i.e. opposite a platen 25. On one face of each ratchet wheel 8 is a disc 14 with coded slip rings engaged by brushes 15.  The pawl 18 associated with each wheel 8 is actuated by a magnet 17. For selecting a desired line of characters, a relay circuit is used to which is led the terminals of the magnets 17, brushes 15 and the input device which latter may be a keyboard, storage, perforated card or magnetic tape reader. When the printer is idle, the shaft 2 rotates but is not energized, so that it is not coupled to the rings 1. When the shaft is energized, the rings 1 and wheels 8 are rotated thereby. Setting of the circuits by the discs 14 causes the pawls 18 to be actuated at the requisite times, to stop the rotation of the rings 1 when the required type faces are opposite the platen 25. Aligning for impression.-When the rings are positioned for printing the desired matter, the shaft 2 is de-energized and holding magnets 21, 22 are energized.
Patent GB-1487832-A (GB)
Title: Lubricants
IPC: C10M103/02
Filed: 1974-09-26
Abstract: 1487832 Carbon microspheres SUMITOMO CHEMICAL CO Ltd 26 Sept 1974 [29 Sept 1973] 41851/74 Heading ClA [Also in Divisions C5 and F2] A surface is lubricated by disposing at the surface a plurality of substantially amorphous non-graphitized carbon microspheres having a particle size of 0À1 to 1000 microns, preferably 0À5 to 200 microns. They may be in the form of a micro bead having a specific gravity of 1À3 to 2À0, preferably 1À3 to 1À7 or a micro balloon having a specific gravity of 0À2 to 1À3, preferably 0À7 to 1À1. The microspheres may be made by carbonizing a microsphere of pitch or a polymer at below 2000‹ C., preferably 800‹ to 1500‹ C. A wide range of suitable polymers is specified but polystyrene and styrene-divinyl benzene copolymers are particularly preferred. The carbonizable material is preferably pretreated to render it infusible with O 2 , O 3 , NO 2 , NO, Cl 2 , Br 2 , H 2 O 2  or preferably SO 3 , SO 2 , H 2 SO 4  or chlorosulphonic acid. Reference has been directed by the Comptroller to Specification 1,443,242.
Patent GB-1516187-A (GB)
Title: Continuous filtration apparatus
IPC: B01D33/00
Filed: 1976-08-31
Abstract: 1516187 Endless filter belt and drum F W HING and F W CHEW 31 Aug 1976 [16 Oct 1975] 42369/75 Heading B1D A continuous filter apparatus comprises a drum 1, rotatable about its axis, two guide rollers 8 and 9 adjacent to and externally of the drum and parallel to its axis 2, idler roller 10, an endless filter band 7 which extends around the idler roller and is guided by means of said guide rollers around the drum, means for rotating the drum and means 13, 15, 16 for cleaning the filter band situated immediately between the idler roller and guide roller 8. The fluid may be fed into drum 1 which is perforated and has a soft roller 5 obstructing the perforation between the guide rollers 8 and 9 or fluid may be fed onto the belt between the idler roller and a guide roller wherein the drum is not necessarily perforated. A pulley 11 may be provided at each side of the filter band, each carrying a belt which grips the edge of the band onto the drum 1 to prevent leakage; the belts may run in grooves on drum 1. Rollers 8 and 9 may be grooved as illustrated. A scraper may contact the drum between rollers 8 and 9.
Patent GB-1062130-A (GB)
Title: Method and apparatus for ciphering and deciphering messages
IPC: H04L9/12
Filed: 1964-10-16
Abstract: 1,062,130. Telegraphy. GRETAG A.G. Oct. 16, 1964 [Oct. 18, 1963], No. 42385/64. Heading H4P. In a ciphering system in which the cipher key is obtained from a counter and shift register arrangement, the counter is set prior to transmission by the action of a secret basic code and a code representing the date and time as determined by a quartz clock. The receiver also comprises a quartz clock, the secret basic code, and means to generate the cipher key for deciphering. In this way the cipher key at both transmitter and receiver is changed every minute. The cipher key developed depends upon the initial setting of the counter which is connected in feedback arrangement with shift registers. The counter may additionally be controlled by the output of a random generator. This output is sent to the receiver so that the counter there is set correspondingly, prior to the transmission of the ciphered data.
Patent GB-1276700-A (GB)
Title: Optical filter
IPC: G02B5/22
Filed: 1969-08-26
Abstract: 1276700 Optical filter MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 26 Aug 1969 [26 Aug 1968] 42463/69 Heading G2J An optical filter for selectively transmitting ultraviolet rays comprises a substrate of calcium fluoride, lithium fluoride or magnesium fluoride and a deposited film of strontium or barium fluoride, the absorption tail being confined between the spectral lines of the Lyman alpha radiation of atomic hydrogen at 12,000 n. m. and the 13, 000 m.m. triplet radiation of atomic oxygen. The substrate itself is transparent to at least the 13, 000 n. m. triplet of atomic oxygen and the deposited film may be several hundred angstroms in thickness. The filter is especially useful in the investigation of ultraviolet light from space.
Patent GB-1127057-A (GB)
Title: Pore-filled open cell foam
IPC: C08J9/42
Filed: 1966-09-23
Abstract: 1,127,057. Non-resilient filled-foam products. J. R. EHRLICH. 23 Sept., 1966 [29 Sept., 1965], No. 42486/66. Headings C3C, C3P, C3Q and C3R. Non-resilient, pliable, ductile filled-foam products are prepared by impregnating a flexible, elastic, resilient, open-cell plastic foam with from 4 to 25 times the weight of said foam of a heated liquid comprising a material which is capable of solidifying within the cells of said open-cell foam, said solidified filling material having properties such as to render the porefilled foam non-resilient, pliable and ductile, said filling material being a microcrystalline wax; or a microcrystalline wax compounded with at least one of polyethylene, polyisobutylene and a plasticizer compatible with said microcrystalline wax; or a plasticized, low molecular weight polystyrene resin composition of 60% by weight of a polystyrene resin having a melting-point of about 100 C. and 40% by weight of dicyclohexyl phthalate; and thereafter solidifying said filling material within said cells. The plastic foam may be a polyurethane foam of the polyester or polyether type, a vinyl polymer foam or a rubber foam.