baber/WOPTO huggingface dataset:
Patent GB-755339-A (GB)
Title: Reinforced pavements
IPC: E01C7/16
Filed: 1954-03-09
Abstract: 755,339. Pre-stressed concrete. PRELOAD CO., Inc. March 9, 1954 [March 11, 19531, No. 6831/54. Class 20(4). A prestressed reinforced concrete roadway, runway, pavement or the like is formed by casting in situ a number of sections such as 10, 11, with temporary transverse joints therebetween, reinforcing elements 12, 13 being encased in, and passing through, both the sections and the joints, tensioning the reinforcements 12, 13 after the concrete has set, forcing the sections apart by an amount equal to the shortening of the sections under compression, filling the joints with concrete 22 and relaxing the expanding force at the joints after the concrete 22 has hardened. The joints are expanded by a hydraulic jack 20 acted on by a pump 21, the sections being thickened where the jack acts upon them. The reinforcements 12, 13 run diagonally across the runway and are anchored by nuts 15 in recesses 14, the reinforcements being coated with asphalt to prevent bonding to the concrete or alternatively they may pass through preformed holes therein. The jack 20 may temporarily increase the width of the joints and then return to that ultimately required in order to obtain more uniform compression of the runway.
Patent GB-580835-A (GB)
Title: Improvements relating to electrical welding machines
IPC: B23K37/04
Filed: 1945-03-20
Abstract: 580,835. Welding. LUCAS, Ltd., J., ALLEN, C. H., and LARDGE, H. E. March 20, 1945, No. 6952. [Class 83 (iv)] In an electric welding machine, particularly for use in securing end flanges or the like to sheet metal bodies &c., a pair of relatively slidable headstocks are mounted on a horizontal bed and each carries a rotatable work holder with expansible electrodes mounted on one or each of the work holders. In operation, the slidable headstock is positioned by means of a hand wheel and screw-and-nut mechanism to locate the work y between it and the other headstock. The flanges g<1> of the work are gripped by' claw members h arranged on a diameter of the work holder disc f. Each claw is pivoted on a bolt i and adjustable against the action of a spring m by the bolt, and a nut j. As the bolt is drawn back by tightening the nut, a projection n on each claw contacts a face o on the work holder, tipping the claw on its pivot to clamp the flanges of the work. Four expansible electrodes q are arranged on one or both of the work holders, each having a spring r attached to a peg affixed at the middle of each electrode segment, and a pair of parallel bars are pivoted at one end on the pegs of the upper electrode segments and have inclined faces s' at their opposite ends to engage the pegs t of the lower segments. The electrodes are contrived to move outwards against springs r to grip the inside of the work by a radially slidable member w having inclined surfaces v which co-operate with abutments u on the bars s, the member w being movable between guides x by a screw-and-nut mechanism y to which it is connected by a piece z. An outer electrode is then brought into position for spot welding on the cylinder, the work being rotated after each weld is completed in readiness for the next weld. On completion of the welding operations, screw-and-nut mechanisms y and (i, j) are slackened to pull back the. member w allowing springs r to contract the electrode segments q and releasing the work from the grip of clamps h. More than one external electrode may be used and a spindle 4 may be provided fitted with a stop-piece 5 to limit the travel of the movable headstock. The mechanism may, alternatively, be mounted on the bed of an existing welding machine having a slidable electrode.
Patent GB-385480-A (GB)
Title: Improvements in adapters for electric lamp and like circuits
IPC: H01R33/955
Filed: 1932-03-08
Abstract: 385,480. Two-part couplings. HOCH. KOPPER, P., ASSMANN; E., and WINKEL, O., (trading as HOCHKOPPER & CO., P.), 49, Gartenstrasse, Ludenscheid, Germany. March 8, 1932, No. 6959. [Class 38 (i).] Combined with switches. -In an adapter for electric lamp and other circuits, of the kind comprising one or more branch connectors and a switch controlling one or more circuits, the parts being accommodated between the two recessed halves of an insulating body which is divided longitudinally and held together by a screw and by metal sleeves forming sockets for lamps and the like, the switch is of the tumbler type with an operating-lever g and tripping-member h accommodated between the insulating- members and guided along their longitudinal dividing line, and the terminals of the adapter are connected to metal strips which line the edges o the recesses. Screws p, q with heads forming the adapter terminals u are respec. tively connected to metal strips t, l, the strip t being connected to the base v of the switch and to one terminal n of a socket f, while the strip l connects the screw q to terminal m of the socket f and terminal k of socket e. A spring i connected to terminal of socket e makes contact with the switch member h when the latter is tripped. The screw r connecting the upper portions of the insulating members together may project at both ends to serve as pins for a bayonet joint connection, or the neck b of the adapter may be provided with screw threads. The sockets f, e may also be adapted for either screw or bayonet-joint connection.
Patent GB-741742-A (GB)
Title: Improvements in or relating to preparation of starch ethers and the products resulting therefrom
Inventor: KERR RALPH WALDO
Filed: 1953-03-13
Abstract: Starch ethers are made by treating starch with an alkylene oxide in the presence of 0.025 to 0.10 mol. of an alkaline etherification catalyst per anhydroglucose unit (C6H10O5) of starch and under conditions such that the starch is not gelatinized.  The starch may be treated in the form of dry granules or as an aqueous slurry or solution.  Dry granules are preferably treated at about 20 to about 55 DEG  C. with a catalyst range of 0.04 to 0.10 mol. per anhydroglucose unit. Aqueous slurries are preferably treated at about 40 DEG  to 50 DEG  C. with 0.025 to 0.075 mols. of catalyst per anhydroglucose unit. Desirably about 6 per cent by weight of a salt is added to the slurry which will react with the alkylene oxide in the presence of water to yield additional alkaline catalyst.  Thus when sodium hydroxide is used as catalyst sodium chloride or sulphate may be added and when calcium oxide is used calcium salts such as the chloride may be added.  The slurry usually contains 40 to 45 per cent by weight of starch.  Esterification is usually effected so as to introduce 0.02-0.20 ether groups per glucose unit.  Acid modified starches may be treated after a preliminary neutralization step.  The products are isolated at pH's of about 5.5 to about 8.5.  The products may be used in the paper and textile industries and may be after-treated, e.g. dextrinized.  In examples (1) commercially dry corn starch is heated with ethylene oxide at about 35 DEG  C. in the presence of 2 per cent of sodium hydroxide and the pH of the product adjusted to 7.6; (2) dried tapioca starch is heated at 40 DEG  C. with propylene oxide in the presence of 3 per cent of calcium oxide and the pH of the product adjusted to 6.8; (3) an aqueous slurry containing 45 per cent of corn starch is heated with ethylene oxide at about 43 DEG  C. in the presence of sodium hydroxide and chloride the product being isolated at pH 6.7; and in (4) an aqueous slurry containing 48 per cent of an acid-modified corn starch is heated at 45 DEG  C. with calcium oxide and propylene oxide the product being isolated at pH 6.0.
Patent GB-1101057-A (GB)
Title: Improvements in or relating to sealing means for dampers and the like
Inventor: BECK KURT
IPC: F16J15/00
Filed: 1964-02-19
Abstract: 1,101,057. Valves. THERMA GESELLSCHAFT FUER WAERMETECHNIK m.b.H. 9 Feb., 1965 [19 Feb., 1964], No. 6986/64. Heading F2V. [Also in Division F4] The seal between a movable valve or damper 6 and its associated frame 4 comprises two strips 5 of flexible spring-tempered sheet material bent to form loops which are attached to flexible strips 2 mounted on the fixed frame and which distort on insertion of the member 6 to form a seal therewith. The loops also seal off the opening in the frame when the member 6 is withdrawn. A loop may be provided at one side only of the member 6 (Fig. 1A, not shown). The loops may be filled with air or gas from a pressure source. The loops may be reinforced by internal fins (11, Figs. 4 and 5, not shown), or by internal springs (13, Fig. 5, not shown). Alternatively, a strip bent through 180 degrees may be secured to the end of the movable member 6 as in Fig. 6 and enter a channel 14 of smaller cross-section. The seal may be formed of separate strips 9, Fig. 3, secured to rigid members 10 on the frame. The strips 9 may alternatively be on the member 9.
Patent GB-817510-A (GB)
Title: Improvements in or relating to gramophone tone arm positioning mechanism
Inventor: DA COSTA HARRY
IPC: G11B17/16
Filed: 1956-03-06
Abstract: 817,510. Automatic gramophones. PLESSEY CO. Ltd. March 6, 1957 [March 6. 1956], No. 7005/56. Class 40 (2). A device for automatically positioning a pickup arm to play records of different diameters stacked on a centre-spindle type magazine gramophone. The positioning mechanism is operated during the transfer of the record from the magazine to the turntable. A spindle 2 (Fig. 1) supported by a bush 3 projects vertically from the base plate 4'of the gramophone and carries at its upper end a flag arm 5 project. ing approximately towards the centre spindle of the turntable 6. The length of the arm is such that 7 -inch diameter records 35 do not contact it, but records of 10-inch diameter 36 and 12-inch diameter 37 strikes the arm and rotate it against the action of a light spring 7. At the bottom of the spindle 2 is a stop member 13. Under the base plate 4 is a latch lever 8 (Fig. 4) pivoted at 9, provided with locking steps 10, 11 and 12 which co-operate with stop 13 and hold it in a position related to the diameter of the falling record. During the time occupied by the above operation the lever 15, pivoted at 16 has been held, by means 23, in a withdrawn position, displaced in a clockwise direction from that shown in Fig. 4. When released the lever rotates anticlockwise, the roller 18 engages the lever 19 and rotates spindle 20 which carries the pick-up arm 21. The movement of lever 15 is limited bv one of the steps 30, 31 or 32 engaging stop 13. Specification 817,509 is referred to.
Patent GB-1361946-A (GB)
Title: Prostaglandin synthesis
Inventor: COREY ELIAS JAMES
IPC: C07F5/02
Filed: 1972-02-15
Abstract: 1361946 Lithium organoborohydrides E J COREY 15 Feb 1972 [22 Feb 1971] 7040/72 Headings C2B and C2C Trans - 1 - (2 - carboxymethyl - 3 - hydroxy- 5-acyloxy-cyclopentyl)-1-octen-3-ol is prepared by reduction of the corresponding 3-one-γ- lactone under an inert atmosphere (dry N 2 ) and in an inert solvent (THF-pentane) with at least equimolar proportions of a lithium trihydrocarbyl borohydride and a Lewis base at -50 to -150‹ C. The borohydride may be lithium 2- thexyl - 8 -methyl-2-borabicyclo-[3,3,1]-nonylhydride, lithium perhydro-9b-boraphenalylhydride or a compound of formula (I) (particularly lithium 9-thexyl-9-borabicyclo- [3,3,1]nonylhydride) or or where R is C 1-8  alkyl, C 5-6  cycloalkyl or phenyl and R<SP>1</SP> is cyclohexyl. The Lewis base may be hexamethyl phosphorus triamide or a tertiary amine. The acyloxy moiety of the starting material may particularly be acetate or pphenylbenzoate.  In Example 1, lithium 2-thexyl-8-methyl-2- borabicyclo-[3,3,1]nonylhydride is obtained by (a) reacting diborane and 2,3-dimethyl-2-butene in THF to yield thexyl-borane, (b) reacting the latter with (Œ) or d-limonene in THF to give 2- thexyl - 8 - methyl - 2 - borabicyclo - [3,3,1] nonene and (c) reacting this with t-butyllithium in pentane. Lithium 9-thexyl-9-borabicyclo- [3,3,1]nonylhydride is similarly obtained by substituting 9-thexyl-9-borabicyclo-[3,3,1]-nonane for the above nonane.
Patent GB-947546-A (GB)
Title: Improvements in or relating to the shaping of hollow metal articles
IPC: B21D26/02
Filed: 1962-02-23
Abstract: 947,546. Making stanchions; stamping; shearing. MONOWELD ENGINEERING CO. (PROPRIETORY) Ltd., and R. ESCHERICH. Feb. 23, 1962 [March 2, 1961], No. 7060/62. Headings B3A, B3Q and B3W. A process for shaping tubular metal bodies e.g. masts, standards or stanchions for hand rails, guard-rails or the like comprises bringing a tubular body at least in a region where it is to be shaped to a temperature at which the metal readily becomes malleable and rotating the said tube about its longitudinal axis during the shaping and effecting the shaping by setting up an adequate pneumatic excess pressure within the tubular body, thereby forcing the wall of the body outwards in said region against a limiting shaping member. Apparatus for carrying out the process comprises a three-jaw chuck 6 provided with a conduit 4a to which pressure fluid is supplied from pipe 1. The tubular workpiece 8 is mounted at one end in the chuck 6 and at the other end in a live centre device 15 rotatably mounted in a support 16 by means of a ball race 17. The ends of the tube are rendered gas tight by rubber seals 7 and 14, the seal 7 having a central aperture for passage of the pressure fluid. Two sets of die rollers 9 and 11 each set constituting three rollers equally spaced around the periphery of the tube are arranged at the portions of the tube to be expanded. The die rollers are rotated by the rotation of the tubular workpiece 8 and each roller is adjustably mounted. A cutting wheel 13 is mounted adjacent one of the lower rollers to cut the tube below the bulged portion and close at least in part the opening in the tube. Any remaining hole is closed by welding. The bearings of the apparatus are water cooled. In operation the tube 8 is rotated at e.g. 250 r.p.m. and the tube portions between the rollers are heated by a welding torch or other burner having a plurality of flames and compressed air is supplied to the tube interior until the portions are distended outwardly into close contact with the rollers. At the same time longitudinal pressure is applied to the tube by the support 16 to supply wall material to the said portions to prevent thinning of the tube wall at said bulged portions. Finally, holes 19 and 20 are drilled through the bulged portions 10a, 12a for the reception of handrails, guardrails or fencing rails. Tapered masts may be made by the above process, by expanding a heated tube against tapered die rollers.
Patent GB-690985-A (GB)
Title: Improvements in or relating to aircraft navigational aid apparatus
IPC: G05D1/06
Filed: 1949-03-15
Abstract: 690,985. Radio navigation. SPERRY CORPORATION. March 15, 1949 [March 16, 1948], No. 7062/49. Class 40 (vii). [Also in Group XXXIII] A navigational aid apparatus for aircraft comprises an indicator displaceable from a reference position to provide a first signal when the craft is travelling in a direction divergent from a predetermined direction, such signal constituting a measure of the rate of displacement across the predetermined path, and to provide a second signal when the craft is turning, and constituting a measure of the rate of turn, the indicator being actuated in response to the algebraic sum of the signals according to the sign convention that the second signal is taken as positive if the rate of turn is one that results in a lateral displacement of the craft in a sense that gives rise to a positive first signal, whereby a zero indication may be provided if the direction of travel diverges from the predetermined path, provided the craft is turning towards such path. The arrangement enables an asymptotic approach path to be flown when the aircraft is alighting. As shown, a cross-pointer meter 10 is provided, the vertical pointer 11 being connected to a directional radio beam receiver 32, localizer receiver 33, which may be of the type described in Specification 646,702, magnetic compass 16, which may be as described in Specification 638,971, (Group XXXVIII], and roll-indicating element of gyro 22, while the horizontal pointer 12 is connected to a pitch-indicating gyro element 50, glide path receiver 55 and an altitude control unit 42, which may be of the type described in Specification 663,913, [Group XXXVIII]. For an instrument approach with a localizer beam, receivers 33, 55 are included in the system with the compass 16 and gyro elements 22, 50. As regards heading, the first or lateral displacement rate signal is derived from the compass 16, rate of displacement being proportional to the sine of the angle of divergence, which for small angles is substantially proportional to such angle, the second or rate of turn signal being obtained from the gyro 22 indicating the angle of bank. In the case of the glide path, the signals are derived from the glide path receiver 55 and pitch-indicating gyro 50. The pilot controls the aircraft in such a manner as to maintain both pointers 11, 12 at their zero positions. For a radio-controlled approach using the directional receiver 32, the altitude control 42 is included in the system, receivers 33,. 55 being excluded. When used as an attitude indicator in cross-country flight the instrument is made responsive to the vertical gyro and compass, the altitude control being optional. The altitude control system forms the subject of Specification 691,029, [Group XXXVIII]. Specification 496,521, [Group XXXVIII], also is referred to.
Patent GB-1156665-A (GB)
Title: Improvements relating to ignition devices.
Inventor: THEOBALD ARTHUR TREVOR
IPC: F23Q2/30
Filed: 1966-02-17
Abstract: 1,156,665. Lighters. A. T. THEOBALD. 14 Feb., 1967 [17 Feb., 1966], No. 7101/66. Heading F4F. A device for use in igniting fuel by means of the spontaneous combustion of a pyrophoric substance such as aluminium borohydride brought into contact with air comprises a housing 1 in which is formed a chamber 2 having a movable wall constituted by a diaphragm 3, the chamber also having an orifice 4 closed by a valve member 5 on a stem 6 secured to the diaphragm 3 and held in closed position by a spring 9, the chamber 2 being connected to a container, holding the pyrophoric substance, via a hollow needle 11. A sudden blow on a boss 7 secured to stem 6 causes a pressure rise in the chamber 2 and the unseating of valve 5 so that a small quantity of the pyrophoric substance is ejected. In a modification the device contains its own supply of pyrophoric substance and the boss is struck by a spring operated hammer.
Patent GB-473755-A (GB)
Title: Improvements in or relating to means for applying sealing wax or the like
IPC: B43M1/00
Filed: 1937-04-07
Abstract: 473,755. Electric sealing-wax heaters. WINTER, E. C. T. April, 1937, No. 7108/36. [Class 39 (iii)] [Also in Group XV] A device for applying sealing - wax comprises electric heating means on the hinged cap of a container provided with feeding means for the wax. The device comprises a guide tube 3, gripped by ribs 2 in a casing 1 ; the casing is closed at one end by a hinged, spring closed cap 9, and at the other by a screwed, heat insulating closure 6. The sealing wax is advanced by a button 8 connected to a spring cup 4, and retracted by a spring 5. The cap 9 comprises a metal frame 10, and flat and domed mica plates 12, 13 between which lies a heating coil 14, connected to a plug, or to a dry battery carried in the casing. A switch in the circuit may be closed and opened by the feeding forward and release respectively of the wax, or may be closed when the device is picked up. A variable resistance may be included in the circuit.
Patent GB-1524736-A (GB)
Title: Automatic voltage regulator
IPC: H02P9/30
Filed: 1977-02-23
Abstract: 1524736 Automatic voltage control CONTROLOGY TECHNIQUES Ltd 23 Feb 1977 [24 Feb 1976] 07143/76 Addition to 1478297 Heading G3R The RMS output voltage of an alternator is regulated by controlling the current in its field winding 14 using a triac 12 or thyristors fired by pulses from a multi-vibrator 28. Inputs to the multi-vibrator are derived from a zero crossover circuit 30 and a comparator 26, in which a reference 24 is compared with a signal from a converter 20 representing the mean square of the output voltage. A multi-plexer 18 samples the sensed voltage at high frequency and controls the mark-space ratio of a modulator 20B which in turn controls an amplifier 20A connected to the converter output through a filter 20C. Current transformers 29 maintain a minimum excitation current, and a circuit 34 reduces the set voltage at low speeds. A protection circuit 36 is connected to the multivibrator 28 by an opto-isolator and monitors field current and alternator output voltage and current.
Patent GB-905617-A (GB)
Title: Manufacture of highly fluorinated aliphatic organic compounds
IPC: C07C17/10
Filed: 1961-02-27
Abstract: More highly fluorinated alkanes are obtained from 1,1,1,2,3,3,3-heptafluoropropane by heating it at 475-700 DEG C. in the presence of activated carbon.  The main products are octafluoropropane and 2-trifluoromethyl-2-hydrohexafluoropropane HC(CF3)3; other products obtained in examples are hexafluoropropene, and C5 highly fluorinated olefines.
Patent GB-1159102-A (GB)
Title: Improvements in and relating to Disc Brakes
Inventor: HARRISON ANTHONY WILLIAM
IPC: F16D55/00
Filed: 1965-07-10
Abstract: 1,159,102. Disc brakes. GIRLING Ltd. 8 July, 1966 [10 July, 1965], No. 7210/69. Divided out of 1,159,101. Heading F2E. In a sliding caliper disc brake of the type in which pads on opposite sides of an axially fixed disc are applied by a single actuating means, by utilizing reaction forces acting through the sliding caliper, a fixed torque plate 94 having a portion parallel to and adjoining a braking face of the disc slidably supports the caliper 86 by means of an axially directed pin 92 which is located solely on one side of the disc between axially spaced arms 96 of the torque plate, means such as a further pin 114 being provided between the caliper and torque plate at a point circumferentially spaced from the pin 92 for restraining rotation of the caliper about the pin 92. Removal of the pads 100, 104 in the radial direction may be effected through an opening 91 in the caliper upon removal of a pin 112. In a modification (Figs. 6-10, not shown) a removal platform (116) is provided on the caliper for this purpose.
Patent GB-491877-A (GB)
Title: Improvements relating to the burning of cement
IPC: C04B7/44
Filed: 1937-03-11
Abstract: 491,877. Cement. AHLMANN, N. March 11, 1937, No. 7218. [Class 22] Cement raw materials are sintered by forming a porous layer of fine granules of the raw material on a gas permeable support and passing gases at a temperature equal or substantially equal to the sintering temperature, i.e. about 1400-1500‹ C., through the layer. The raw material may be made porous as described in Specification 407,077 ; the average size of the granules should be about 1 mm. in diameter and should not exceed 3 mms. The raw materials may be preheated and even substantially calcined by mixing them with fuel, igniting and drawing air therethrough to effect combustion. The heating gases may be continuously circulated through the layer of raw material and reheated, e.g. electrically and /or by mixing with hot furnace gases ; a fraction of the gases may be continuously bled off and carbon dioxide isolated therefrom. In the apparatus shown, two hoppers 4, 5 respectively supply a heat resistant material such as clinker and raw material to form layers 6 and 7 on a chain grate 1 moving around rollers 2, 3. The hot gases are circulated by a fan 8 and after being heated by an electric furnace 16, pass first into a hood 9, then through the layers 7, 6 and the grate 1 into a space 10 which is sealed relatively to the grate 1, thence they pass upwards through the grate and layers 6, 7 to a pipe 11 connected to the suction side of the fan 8. Additional gases may be admitted through a pipe 13 having an adjustable damper 12 and gases may be removed through a pipe 15 having an adjustable damper 14.