baber/WOPTO huggingface dataset:
Patent GB-1081906-A (GB)
Title: Preparation of organo-boron compounds
IPC: C07F5/02
Filed: 1965-01-01
Abstract: Compounds of the formula BR3, where R is an alkyl, aryl, cycloalkyl or aralkyl radical are prepared by reacting an organic aluminium compound containing an Al-R bond with boron oxide activated by boron fluoride.  The process may be carried out using a boron fluoride etherate.  Preferably the boron fluoride and oxide are heated together, an organic solvent is added, giving a suspension which dissolves on heating, and then the organic aluminium compound is added.  The organic aluminium compound may also contain halogen. Examples describe the preparation of triethyl boron and triisobutyl boron using Al(C2H5)3, Al(i-C4H9)3 and Al2Cl3(C2H5)3.
Patent GB-227275-A (GB)
Title: Improvements in or relating to cooking utensils
IPC: A47J36/36
Filed: 1924-01-03
Abstract: 227,275. Parsons, M. L., and Lawson, D. M. Jan. 3, 1924. Jackets; bottoms.-An asbestos-lined cooking- utensil jacket 1 has the asbestos protected by a lining 3 of gauze, steel, or the like. A bowl or container part, formed with a spherical bottom 4, is attached to or formed integral with the jacket. Specification 208,356 is referred to.
Patent GB-170525-A (GB)
Title: Improvements in or relating to coke ovens
IPC: C10B21/20
Filed: 1921-01-04
Abstract: 170,525. Cravau, R. Jan. 4, 1921. Coke ovens.-In a coke oven having regenerator chambers arranged longitudinally beneath the ovens and extending substantially the full width of the bench air inlets o are provided at the ends of the chambers, and the waste gases are exhausted into two flues m. The ports n leading to the flues m are preferably adjacent the ports o so that a single controlling-damper p can be used for each pair. When a lean gas such as producer or blast furnace gas is used for combustion, a pair of regenerator chambers is provided beneath each oven, one for air and the other for gas. The regenerator chambers are connected to the heating-walls on both sides of the oven beneath which they are situated, and the flues of the heating- walls are connected together in pairs.
Patent GB-156483-A (GB)
Title: An improved electrical condenser and method of making the same
IPC: H01G4/38
Filed: 1921-01-05
Abstract: 156,483. Dubilier, W. Jan. 18, 1916, [Convention date]. Condensers.-A condenser comprises a number of sections 1 .. 6 connected in series between end plates, the number of sections being sufficient to reduce the voltage per section to a value below the brush discharge point. Each section comprises two sets of conducting plates 13, 14 separated by sheets 15 of mica, and the sections are connected together alternately on opposite sides as shown. Plates of mica or other insulating-material 7, projecting alternately in opposite directions, are placed between each section of the condenser, and similar plates 8 are placed between the end sections and end plates 9, which are clamped together by bars 11. The end plates 9 are formed with transverse ribs 16 and recesses 17 or the like in order to provide a large surface for radiating heat from the condenser. After assembling the parts, the condenser is immersed in a hot bath of wax or other insulating adhesive material and the end plates are pressed together to expel air. The expulsion of air is completed by subjecting the condenser to a vacuum either during or after the impregnation. Specification 19506/14 is referred to.
Patent GB-395016-A (GB)
Title: Improvements in or relating to multiple core telephone and telegraph cables
IPC: H04B3/28
Filed: 1932-01-06
Abstract: 395,016. Preventing inductive disturbance. SIEMENS & HALSKE AKT.- GES., . Siemensstadt, Berlin. Jan. 6, 1932, No. 401. Convention date, Jan. 6, 1931. Addition to 361,843. [Class 40 (iv).] The protective sheathing described in the parent Specification, which preferably consists of a layer of wires, is coupled to the cable itself or to the disturbing circuit in order to introduce a counter-disturbance. When coupled to the cable, the coupling may be through a transformer or a thermionic valve or both. When coupled to the disturbing circuit, the coupling may be through a transformer or potentiometer.
Patent GB-802825-A (GB)
Title: Improvements in or relating to lead alloys for accumulator batteries
Inventor: CLOSTERMANN KLAUS
IPC: H01M4/68
Filed: 1956-01-05
Abstract: The grid plates of accumulator batteries are formed of an alloy having a composition within the following range in per cent by weight.  Sb 2.0-20.0; As 0.075-1.0; Cu 0.04-0.12; Pb the remainder. Preferably this alloy is used only for the positive grid of the accumulator.
Patent GB-1167941-A (GB)
Title: Apparatus for Printing.
IPC: G06K15/16
Filed: 1967-01-04
Abstract: 1,167,941. Selective printing. INTERNATIONAL BUSINESS MACHINES CORP. 4 Jan., 1967 [17 Jan., 1966], No. 442/67. Heading B6F. [Also in Division G2] Type band machines; rotary drum electrostatic printing machines; machines with two sets of printing surfaces; machines coupled for simultaneous operation.-A selective printer is provided with an endless belt printer 10, Fig. 1, as described in Specification 919,653, to print a selected portion of a web 15 with alpha-numeric information disposed on the web in a predetermined format and the web which is provided with coded information in a field A, Fig. 2, and a gating control symbol CGS along the leading edge of a sheet, formed by cutting the web transversely at a later stage, is advanced to an electrostatic printer 25 in which the other portion of the information, e.g. in the form of a graph is printed electrostatically by a rotating drum 45. Electrostatic printing; record controlled input arrangements; sheet feeding arrangements.-The sheets severed from the web 15, Fig. 1, by a transverse cutter 36 and bearing the preprinted alpha-numeric information and five bit binary coded printing control information disposed in field A, Fig. 2, adjacent the leading edges, are fed by a suction drum 38 to the rotary electrostatic printing drum 45, carrying the latent image of the graphic information to be printed in assocation with the alpha-numeric information. The latent image is formed on the drum 45 in response to signals received by circuit control 43 from photo-electric cells PC2-PC7 which read the binary code in field A to cause the required information stored on a photographic film FL (Fig. 4) to be disposed in front of the lens of a projector P1 or P2, Fig. 1, whose shutters are enabled by a signal along control line 77, 77A when a photo-electric cell PC8 scans the GCS symbols adjacent the leading edge of the sheets. The latent image is dusted by xerographic powder in a container 59 and transferred to the sheets by rolling contact when the leading edge enters the bite between the drums 38, 45. The sheets are then stripped off the suction drum by a guide 46 and jet nozzles 40 and after fixing in a chamber 48 are stacked in a trough 52. Web feeding, guiding and cutting arrangements. The pre-printed web 15, Fig. 1, delivered continuously from the printer 10 is stored temporarily in the form of a loop in a vacuum column provided with vacuum switches, the lower one of which LLS stops the printer 10 if the electrostatic printer 25 cannot cope with printing of the graphic information. The web 15 on leaving the vacuum column is fed by driving rollers 26, 27 to a reversing roller 29 on the outlet side of which is disposed a further pair of driving rollers 33, 34 for intermittent advancing of the web 15 to a transverse cutter 36 which is operated by a one-revolution clutch 35 in response to a signal emitted by a photoelectric cell PC1 when it senses the GCS mark on the web 15.
Patent GB-580880-A (GB)
Title: Improvements in arrangements for automatic volume control in thermionic amplifiers
IPC: H03G3/22
Filed: 1942-01-12
Abstract: 580,880. Automatic gain control. GENERAL ELECTRIC CO., Ltd., BIGGS, A. J., and JONES, C. C. Jan. 12, 1942, No. 446. [Class 40 (v)] A delayed A.V.C. circuit comprises a gridcontrolled thermionic valve, with the output resistance shunted by a diode, which is arranged to conduct when the input is below a certain level, and becomes non-conducting when the input exceeds that level. The input terminal of the arrangement is connected through a blocking condenser C to the control grid of a valve V1. The other input terminal is connected to H.T. -, which is connected to the grid of V1 through grid lead R4. The anode of V1 is connected to H.T.+(1), which may be at earth potential, through output resistance R3. The cathode of valve V1 is biassed positive with respect to H.T. - by a potentiometer R1, R2, and decoupled by a condenser C1. The resistance R3 is shunted by a diode V2, the anodes of the valves V1, V2 being connected together and through a resistance R5 to H.T.+(2) which is positive with respect to H.T.+(1). The values of R5 and R3, and the H.T. voltages are chosen so that, for low inputs, the diode V2 is conducting, and the voltage across R3 remains constant. For larger inputs, the diode V2 becomes non- conducting, and the A.V.C. voltage developed across R3 increases with the input. In other arrangements, the output resistance R3 may be in the screen grid circuit of the valve V1, or in the cathode circuit.
Patent GB-672023-A (GB)
Title: Improvements in and relating to electric cables
Inventor: THORNE BERYL FREDA
IPC: H01B7/18
Filed: 1950-01-06
Abstract: 672,023. Cable armouring. SUBMARINE CABLES, Ltd. Jan. 3, 1951 [Jan. 6, 1950], No. 447/50. Class 36. In an electric cable one or more layers is or are provided between the core and the armouring to produce uneven pressure distribution due to the stresses set up by the armouring on the core. The intermediate layer may consist of servings of fibrous material such as jute, which are, arranged so that the strands extend over the length of the core in an irregular manner. The servings may consist of fibres 1, 2 of different thickness or different hardness, applied over thermoplastic core insulation B, Alternatively the fibres may be wound in two layers 5, 7, with the same or opposite lay, one or both of the layers having the strands grouped so as to provide gaps 6, 8 therebetween.
Patent GB-1245493-A (GB)
Title: Connector
Inventor: PIERINI JOHN MICHAEL
IPC: H01R24/50
Filed: 1969-01-03
Abstract: 1,245,493. Two-part couplings. TEXAS INSTRUMENTS Inc. 3 Jan., 1969 [11 March, 1968], No. 488/69. Heading H2E. A connector for connecting a printed circuit board of the type having signal conductor strips and a ground plane on opposite sides of a dielectric substrate to a plurality of pairs of conductors, e.g. coaxial cables, has the characteristic impedance between contacts in the connector matched to the respective impedances on the circuit board. The connector comprises an insulating shell 51 having an access slot 61 and housing a dielectric spacer bar 23 which has transverse areas of its upper surface metallized at 37 with a resilient finger 39 attached to each, the spacer bar also having a metal shim 27 attached to its lower surface in contact with an L-shaped conductive member 25. Fingers 39 and extension 35 of member 25 contact the signal and ground plane conductors respectively of the circuit board when it is inserted to abut the edge 36 of the spacer bar. The insulated inner conductors 45 of coaxial cables pass through apertures in the member 25 and are electrically connected to fingers 39 by soldering or welding at 48, and the outer conductors 49 are wrapped around and soldered to ferrules 43 which are swaged or staked into the apertures in the member 25. Tabs 53 on member 25 lock behind a step 55 on the shell 51. A combshaped foil structure may be incorporated on the upper surface of the spacer bar having " teeth " portions interposed between the conductive areas (Fig. 4, not shown). This combshaped structure is grounded and may be provided with resilient finger contacts which contact strips on the printed circuit board alternatively with the signal strips, thus improving the screening between adjacent signal paths (Figs. 5, 6, not shown). The cable entry may be carried out through the base of the connector (Fig. 7, not shown).
Patent GB-363520-A (GB)
Title: Improvements in and relating to roofing tiles
IPC: E04D1/04
Filed: 1931-01-06
Abstract: 363,520. Roofing tiles. ALLARD, A. W., 100, Leigham Court Road, Streatham, London, HATT, A. P., Restarmel, Alexandra Road, Reading, ROBERTS, ADLARD, & CO., Ltd., 53, George Row, Bermondsey, London, and TILEHURST POTTERIES (1922), Ltd., Kew Kiln, Tilehurst, Reading. Jan. 6, 1931, No. 494. [Class 87 (i).] A roofing tile of the kind having a concave waterway and a convex roll overlapping the edge of an adjacent tile interlocks at opposite corners with the tiles above and below it in the same diagonal row by means of bevelled surfaces m, k and. c, e respectively and shoulders o, n and f respectively. The interlocked corners of the tiles a<2>, a<3> are covered by the roll of the tile a<1>. Each tile has a nib q at the upper edge of its undersurface and supplementary nibs s, which engage the upper edge of the tile below and are sloped at the back and sides to allow any water on the underside of the tiles to run down to the eaves.
Patent GB-543728-A (GB)
Title: Duplicating machines and block-out means therefor
IPC: B41L11/00
Filed: 1941-01-14
Abstract: 543,728. Copying documents. TRIGGS, W. W. (Ditto, Inc.). Jan 14, 1941. No. 530. [Class 100 (ii)] A block-out sheet for masking part of the master sheet secured to the drum of a rotary duplicating machine is carried by a clip or bar mounted in a narrow longitudinal slot in the drum and held in position therein magnetically so that it may be readily released and adjusted longitudinally of the drum. The block-out sheet 33, Fig. 2, is secured to a clip such as 34, Fig. 7, of magnetic material which is inserted in a slot 32 in the drum 20 of non-magnetic material such as aluminium. Within the drum and immediately opposite to the slot 32, a number of bar or horse-shoe magnets 38 are positioned, these magnets being secured to a bar 35 of aluminium fixed by end portions 36 to the ends of the drum. Various forms of clips for holding the sheet are described.
Patent GB-140038-A (GB)
Title: Improvements in or relating to gun slings
IPC: F41C23/02
Filed: 1920-01-07
Abstract: 140,038. Wagner, H. S. Jan. 7, 1920. Carrying.-Consists of a gun-sling comprising two straps A, A<1> connected together by a link B, and each having a loop a<3> on which are threaded links E, E<1> connected together, one of said links carrying a snap-hook F for securing the sling to the gun. The loops a<3> may be shortened or lengthened by adjusting hooks C, which engage holes a in the straps. As shown in Fig. 6, several slings may be connected to form a rope for haulage or like purposes, or for use as a life-line.
Patent GB-813316-A (GB)
Title: Automatic adjusting device
Inventor: BUTLER HENRY JAMES
IPC: F16D65/56
Filed: 1956-01-10
Abstract: 813,316. Automatic adjusting mechanism for brakes. DUNLOP RUBBER CO. Ltd. Dec. 31, 1956 [Jan. 10, 1956], No. 777/56. Class 103 (1). In an automatic adjusting device for a brake, e.g. a disc brake having a rotatable disc 1 and two pressure plates 2 and 3 pivoted at 2b and 3b to a non-rotatable member (not shown); the apices 2c and 3c of the pressure plates projecting beyond the outer periphery of the disc 1, rotation of arm 16 by a cable or other means (not shown) rotates an operating rod 11 provided with a coarse-pitch thread 20 at one end and a fine-pitch oppositelythreaded portion 13 at the other end to move rod relative to a coarsethreaded part-spherical member 6 housed in a part-spherical recess 2d in pressure plate 2 to draw pressure plates 2 and 3 together until hreaded member 6 abuts circular clip 21 whereby the clearances 26 of the brake are taken up. Continued rotation of arm 16 causes member 6 to rotate in its recess 2d without further relative movement between the operating rod 11 and member 6 taking place. During the time operating rod 11 is moved relatively to member 6, nut 14 is brought into abutment with the planar side 7a of a keyed part-spherical member 7 housed in an associated recess in pressure plate 3. Continued rotation of arm 16 causes relative movement to take place between nut 14 and the fine-pitch threaded portion 13 of operating rod 11 to effect further movement urging the pressure plates together. The brake is disengaged by releasing the tension in the cable or like means such that the arm 16 is returned to the position illustrated by spring means (not shown); the coarsethreaded portion 20 of the rod 11 unscrewing to a position in which the circular spring clip 22 is once again abutting the planar side 6a of the threaded member 6. As the friction pads 4 and 5 wear, the nut 14 progressively moves along the fine-pitch threaded portion 13 of rod 11. such that the nut 14 finishes up in a position very slightly further along the rod 11 to automatically compensate for wear during each application of the brake.
Patent GB-370972-A (GB)
Title: Improvements in or relating to trouser or like presses
IPC: A47G25/72
Filed: 1931-01-09
Abstract: 370,972. Trouser, tie, and like presses. McINTYRE, A. B., 70, Lister Gardens, Cambridge Road, London. Jan. 9, 1931, No. 823. [Class 138 (ii).] An electrically-heated element A@ Fig. 1, which is inserted between the members B, B<1> of an ordinary press comprises three flat coils A3, A<4>, A<5>, Fig. 2, of wire A<1> wound on asbestos or other supports. A<2> and connected in series to form a substantially U-shaped unit. The unit is held between layers of asbestos or other material A<6>, A', Fig. 3, over which metal sheets A<8>, A9 are laid. The whole element is covered with cloth or other fabric All.
Patent GB-941684-A (GB)
Title: Improved electron tubes
Inventor: ARMSTRONG RICHARD JOHN
IPC: H01J61/26
Filed: 1961-01-09
Abstract: 941,684. Discharge apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 2, 1962 [Jan. 9, 1961], No. 834/61. Drawings to Specification. Heading H1D. A rare gas discharge tube contains a quantity of zeolite which acts as a reservoir for rare gases, and means for heating the zeolite to release the gas into the tube. The zeolite may be a natural calcium-aluminium silicate, e.g. chabasite.
Patent GB-308847-A (GB)
Title: Improvements relating to devices for coupling ground-working implements with the traction means thereof
IPC: A01B63/00
Filed: 1928-01-10
Abstract: 308,847. Keulen, O. van. Jan. 10, 1928. Couplings for tractors, agricultural.-In devices of the kind in which the trailing implement can swivel in both the horizontal and vertical planes, the parts are arranged so that the line of draft passes through the pivoting axes. A plough P or the like is mounted on a bracket 3, Fig. 3, by means of a double bar 5 pivoted at 6. The bracket is hinged to the tractor T at 2. A shaft 8 carrying a cam 19 and a lever 7 is supported in a horizontal transverse position by arms 9 of the bracket 3. Normally the lever 7 rests as shown on a support 10 on the tractor. When the latter turns at a headland the lever falls, engages the ground, and is rotated so that the cam engages the bar 5 and raises it and with it the plough. A spring 15 and links 16 connect the plough beam 4 with a roller 17 in engagement with a bar 18 pivoted at 30 to the bracket 3 and bearing against the cam. When the cam turns with the lever 7 the lower end of the bar 18 moves to the right causing the roller to move up to the pivot 30. In the modified construction shown in Fig. 1 the end of the beam 4 is pivoted as shown and is adjustable by means of a hand wheel 33. A curved piece 18<a> takes the place of the bar 18. A hook 14 under the control of the driver is provided to engage an arm 11 on the shaft 8 and so keep the plough raised above the ground when required. In a second modification in which a lever handle is provided for lifting the implement, one end of the spring is secured to the tractor and the roller 17 moves along one arm of a bell crank, the other arm terminating in a pedal.
Patent GB-792989-A (GB)
Title: Power factor testing gear for electric circuits
Inventor: BUCKLAND FRANCIS ALFRED GEORGE
IPC: G01R11/48
Filed: 1955-01-11
Abstract: 792,989. Electric measuring instruments. BRITISH INSULATED CALLENDER'S CABLES, Ltd. Jan. 11, 1956 [Jan. 11, 1955], No. 876/55. Class 37. Apparatus for measuring the power factor of a three-phase A.C. circuit by simultaneously determining the active and reactive components using two single-phase integrating wattmeters comprises a base having two sets of four terminal contacts engaging, supporting, and connecting to the current and voltage coils of a respective wattmeter; each voltage coil contact being provided with a flexible lead connecting such coils respectively across phase and neutral and across the remaining phases, and one current coil contact of each meter being connected in the current circuit to be tested while the remaining current coil contacts are interconnected in series. Integrating wattmeters 2, 3 are supported on a base 1 (Fig. 4) comprising parallel insulating plates 4, 5, separated by an inset vertical wall 6, which have respective groups of four upstanding plugs mounted thereon (Fig. 3, not shown) to engage sockets of the meter terminal blocks 17, 18. Outer plugs of each set are connected to the meter current coils and interconnected in series with leads 25, 40 (Fig. 1) and a pair of binding posts 22, 23 (Fig. 4) for connection to the output of a current transformer 24 (Fig. 1) coupled to the phase circuit R whose power factor is required, in series with any provided auxiliary control gear 54. Inner plugs of each set are connected to the meter voltage coils and to dependent flexible leads 37, 38, 39, 40 terminating in shrouded spring clip terminals (Fig. 3, not shown) for attachment respectively between the test phase R and neutral G, and between the remaining phases B and Y. Ammeter contacts 26, 27 (Fig. 4) are connected in series with the current coils and are short-circuited by other contacts 30, 31 situated between plates 4, 5 until the ammeter 34 is plugged in, when pin 33 of the latter separates them. Voltmeter 52 may similarly be inserted in a pair of sockets connected across either meter voltage coil, and the input current connections 22, 23 may be short-circuited by bar 47, inserted into sockets 48, 49 (Fig. 4) to disable the apparatus. In operation the voltage coils of the respective meters are energized with quadrature voltages ER and EYB = #3E R , while the current transformer energizes the remaining coils with a current I lagging voltage ER by #. It is shown that after the meters are allowed to operate for a fixed time determined by automatic or manual removal of short-circuiting connection 47, the reading of the first meter is proportional to the effective power ERI cos # and that of the second meter is proportional to the reactive power #3E R I sin # (Fig. 2, not "shown) so that if W, Wx are the readings of the meters, tan # = Wx/#3W from which the power factor cos # is determinable. The measurement is repeatable for each phase in turn, and the meters are interchangeable for different voltage and current ranges.
Patent GB-637150-A (GB)
Title: An improved process of bleaching textile fibres
IPC: D06L4/10
Filed: 1948-03-17
Abstract: Wool fibres are bleached by immersing them in a dilute aqueous solution of hydrogen peroxide having a temperature not exceeding 50 DEG  C. and a pH value between 6 and 10 for a time sufficient only to ensure thorough wetting of the wool, removing the wool, freeing from excess solution and heating to a temperature above 70 DEG  C. but below 100 DEG  C.  The bleached wool is then preferably rinsed off to remove excess of hydrogen peroxide.  In examples: (1) wool yarn is passed through an approximately 3 vol. hydrogen peroxide solution brought to pH 8 with sodium pyrophosphate, squeezed to retain its own weight of solution, heated to 90 DEG  C. in an enclosed steam cabinet and then rinsed; (2) as in (1) but an optical bleaching compound is added to the rinsing bath; (3) wool fabric is passed through the peroxide bath as in (1), squeezed, heated to 80 DEG  C. and then rinsed; and (4) wool yarn is passed through a 3 vol. hydrogen peroxide bath brought to pH 10 by adding sodium pyrophosphate and ammonia, squeezed, heated to 90 DEG  C. and rinsed in water.