baber/WOPTO huggingface dataset:
Patent GB-254710-A (GB)
Title: An improved method of starting synchronous motors or asynchronous motors with squirrel-cage armatures, which are coupled to gas compressors
IPC: H02K7/118
Filed: 1926-06-25
Abstract: 254,710. Akt.-Ges. Brown, Boveri, et Cie. July 2, 1925, [Convention date]. Starting, facilitating.-Gas compressors, such as turbo-compressors, which are drvien by synchronous electromotors or asynchronous motors with squirrel-cage armatures are evacuated before and during the starting of their motors by independent means. During the evacuation, airtight glands may be put into operation until the motor has attained the required speed. Oil may be forced into the bearings beforehand, and the shaft may be turned by hand or mechanically before starting.
Patent GB-202102-A (GB)
Title: Improvements in and relating to rheostats for controlling the filaments of vacuum tubes
IPC: H04B15/00
Filed: 1922-06-10
Abstract: 202,102. Welch, A. P. June 10, 1922. Wire resistances, cored; variable resistances.- In resistances for controlling the filament currents of thermionic valves, the wire B is wound on a former A shaped so as to vary the resistance per turn. The former may be flat or circular, and may be tapered at the ends and middle as shown, or at the ends only. A sliding contact or brush engages with the wire.
Patent GB-1059618-A (GB)
Title: Preparation of halogenated alkylaromatic isocyanates
IPC: C07C263/16
Filed: 1965-04-15
Abstract: Alkaryl isocyanates are nuclearly halogenated while maintaining reaction conditions (e.g. by effective liquid-gas contacting throughout the reaction zone) so that a reduced proportion of hydrogen halide is present by comparison with known methods.  In examples, the alkaryl isocyanate and the halogenating agent are passed countercurrently through a sieve plate tower as reactor. Preferably, the hydrogen halide concentration is kept below 0.6 milliequivalents per g. of (reactants and products).  In examples, tolylene diisocyanate is converted to products containing (a) 27.4 or 34.7% nuclear Cl, and (b) 13% nuclear Cl + 29% nuclear Br + 7% alpha-halogen.
Patent GB-1174451-A (GB)
Title: Protection of Electrodes in Electroslag Remelting Processes.
Inventor: RAVAULT FRANK ERNEST GEORGE
IPC: C22B9/18
Filed: 1967-04-10
Abstract: 1,174,451. Coated electrode. FOSECO INTERNATIONAL Ltd. 2 April, 1968 [10 April, 1967], No. 16363/67. Addition to 1,164,434. Heading B2K. [Also in Division H5] The process of specification 1,164,434 for coating a metal surface with a composition comprising powdered aluminium and magnesium and/or zinc oxide or a precursor thereof, in a liquid vehicle, is applied to electrodes for use in the electroslag remelting process.
Patent GB-585887-A (GB)
Title: Improvements in screwed bolts
IPC: F16B35/04
Filed: 1944-08-29
Abstract: 585,887. Bolts. APPLEGATE, A. E. Aug. 29, 1944, Nos. 16374 and 17356. [Classes 89 (i) and 89 (ii)] [Also in Group XXII] Bolts for use in timber &c., have the forward end constructed to permit the bolt to be driven or inserted without previously boring a hole. For this purpose the bolt may have a pointed end c, Fig. 1, and if this be of the same or slightly greater diameter than that across the crests of the thread the bolt may be driven into' position without damaging the thread. The end may be sawn off after insertion or there may be a neck between the part c and the bolt proper to enable the end to be broken off. The end may be screwed to permit the nut to be applied before removal of the end. The end may be drilled to engage a spigot on the bolt and this may be of square or other form to rotate a detachable end having a gimlet point f, Fig. 4. The end may be pyramidal with cutting edges at the angles or it may be of twist drill formation, Fig. 7.
Patent GB-307039-A (GB)
Title: Improvements in or relating to the purification of gases
IPC: B01J8/00
Filed: 1928-06-06
Abstract: 307,039. Soc. l'Air Liquide, Soc. Anon. pour l'Etude et l'Exploitation des ProcÚdÚs G. Claude, (Assignees of Soc. Chimique de la Grande-Paroisse Azote et Produits Chimiques). March 2, 1928, [Convention date]. Gases, purifying for synthetic reactions; synthetic ammonia, catalytic production of. -In the purification of gases intended for exothermic synthesis reactions by the use of reactions, catalytic or otherwise, which transform gaseous impurities into condensable or neutral products, the treatment is carried out in a container surrounded with the catalyst for the main reaction, so that indirect contact and exchange of heat occurs, enabling the temperature of the purifying reaction to be more easily controlled. The process may be applied to the removal of oxygen and carbon monoxide by catalytic hydrogenation from gases intended for the synthesis of ammonia, yielding water, methane or other organic compounds. In the apparatus shown, A is a container adapted to withstand high pressures; the impure gas mixture enters at 1, traverses passages 2 and 3, becoming heated, and reaches a purifying catalyst at B. The gas flowing out at 4 contains no carbon monoxide and reacts at C with the ammonia reaction catalyst. The mixture of non- combined gases, water and ammonia flows out at 5. In a.n alternative form, provision is made for the separation of the products of the purifying reaction, and the regulation of the volume of gas before passage over the main catalyst.
Patent GB-704897-A (GB)
Title: Synchronising circuit arrangements for electric oscillation generators
Inventor: LEE DAVID FREDERICK
IPC: H04N5/12
Filed: 1951-07-12
Abstract: 704,897. Pulse circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 19, 1952 [July 12, 1951], No. 16504/51. Class 40 (6). [Also in Group XXXV] Incoming pulses, such as the line sync pulses of a television system, which may be of variable duration are converted to pulses of the same duration before being used for synchronizing the scanning oscillator. In Fig. 4, the pulses applied to the grid of a valve 50 appear in negative inverted form at the anode which is connected through a condenser 52 and resistor S3 to a tuned circuit 54, 55. This is shock excited by the leading edge of the pulse and a half oscillation of negative polarity occurs, the half-period of the circuit 54, 55 being shorter than the width of the pulses. Any tendency for the oscillation to continue is damped out by the resistor 56 and diode 57. The pulses, now of uniform width, are amplified by the valve 60. In a modified circuit, Fig. 5 (not shown), the tuned circuit 54, 55 is replaced by a resistor across which is connected a delay line shorted at its outer end. The total delay time occupied by the outward and return travel of the pulses is less than the duration of a normal incoming pulse. Specification 472,686, [Group XXXV], is referred to.
Patent GB-168196-A (GB)
Title: Improvements in or relating to pens for recording apparatus
IPC: G01D15/16
Filed: 1920-06-19
Abstract: 168,196. Nalder Bros. & Thompson, Ltd., and Laird, W. G. June 19, 1920. Pens: reservoir nibs. - A pen for recording- apparatus is made of a spiral A of wire, one loop, preferably the last, being bent over to form the penpoint A<1>. The flow of ink may be facilitated by a groove A<2> on both sides of the point A<1>. The spiral A serves as a capillary feed' and may be partly immersed in an ink-reservoir E, Fig. 3, or may itself serve as the reservoir, Fig. 1, one or both ends being closed by end plates B with arms C for attachment to the apparatus.
Patent GB-334240-A (GB)
Title: Improvements in the manufacture and production of vat dyestuffs of the anthraquinone acridone series
IPC: C09B1/36
Filed: 1929-05-30
Abstract: 334,240. Johnson, J. Y., (I. G. Farbeninditstrie Akt.-Ges.). May 30, 1929. Anthraquinone acridones. -Vat dyestuffs are prepared by condensing Bz 3: 5-dichloro-4-chloranthraquinone-2 : 1(N)-acridone with amides of aromatic carboxylic or sulphonic acids, and the products saponified if desired. The above acridone-amide condensation products may be obtained more advantageously in some cases by recondensing the saponified products with an aromatic acid chloride. Condensation is preferably carried out in a diluting or suspending medium and in presence of acid-fixing agents; condensing catalysts such as copper or its compounds may also be added. In examples Bz3.5-dichloro-4- chloroanthraquinone-2.1-(N)-acridone (prepared by treating with anthraquinone-2 : 1(N)-acridone suspended in nitrobenzene with sulphuryl chloride in presence of iodinechloride) is condensed (1) with p-toluenesulphonamide and the product saponified by concentrated sulphuric acid at 80‹ C; (2) with benzamide and the product saponified as above; and (3) with either above amide and saponified and the product condensed with 1- chloranthraquinone-2-carboxylic acid chloride. The products dye cotton violet to blue shades.
Patent GB-828869-A (GB)
Title: Coining, shaping, or impressing die or like tools or tool parts
Filed: 1957-05-27
Abstract: Cold-wiring, cold-shaping and cold-impressing dies or like tools or tool parts are made of an alloy having a composition, in per cent by weight within the following range C 0.65-0.85, Cr 1.2-2.5, Ni 0.3-1.0, Mo 0.3-1.5, Fe the balance together with Mn and Si (in amounts determined by the usual smelting conditions) and S and P impurities.  The alloy may also contain W 0.2-1.0 and/or V 0.1-0.6. The Si content of the alloy may be increased to be within the range 0.5-2.5.
Patent GB-680789-A (GB)
Title: Improvements in and relating to reverse direction couplings
IPC: B63H23/08
Filed: 1949-06-25
Abstract: 680,789. Reverse-gear. HINDMARCH, T. June 25, 1949, No. 16844/51. Divided out of 680,761. Class 80 (ii). In a clutch-actuated reverse gear, e.g. for a ship or locomotive, the one or more driving prime movers, e.g. gas or steam turbines, are prevented from overspeeding in the neutral passage during a shift by one or more friction brakes, arranged e.g. in reverse idlers k to connect the prime movers mechanically to the fixed casing. An input shaft a, through wheel-pairs b c, drives a parallel shaft d, carrying fast wheels e f, the first mentioned, e, driving forwardly through wheels g, h clutchable to parallel shafts l, m, carrying fast pinions n, o meshing a common wheel p on the output shaft g ; the second-mentioned wheel f driving reversely through idlers k and wheels i, j, also clutchable to the shafts l, m. Brakes connect the idlers k to their fixed shafts t for braking the input shaft, and hence the prime movers, in neutral. The clutches and brakes are liquid actuated with graduated control as in Specification 680,761. Interlocked multiple units may be used and change of speed ratio may be provided.
Patent GB-1247135-A (GB)
Title: A method of producing round bar by stretch forging
Inventor: STRANDELL PER-OLOF
IPC: B21J13/02
Filed: 1970-04-09
Abstract: 1,247,135. Forging. P. O. STRANDELL. 9 April, 1970 [11 April, 1969], No. 16885/70. Heading B3H. A rectangular cross-section bar stock 19 is stretch forged into round section stock by a pair of dies 10, 11 whose working surfaces 14, 15 converge and define a round opening when closed. The stock is introduced with its longer faces parallel to the direction of movement of the upper die 10, the lower die 11 being fixed. The cylindrical section 18 of the working surfaces serves to produce straight stock even if the initial stock is introduced obliquely. The dies may be guided relative to each other by pins (25), Fig. 2 (not shown), and urged apart by springs to an adjustable separation. A constant feeding force can be applied to the blank by rollers and the amount of feed determined by the maximum die separation. The stock may be high-speed steel. A reduction ratio of between 15 and 40%, preferably 20-25%, can be obtained.
Patent GB-1142620-A (GB)
Title: Improvements in transformers and in coil formers therefor
IPC: H01R13/66
Filed: 1966-04-19
Abstract: 1,142,620. Transformers. DYNAMIC INSTRUMENT CORP. 19 April, 1966 [23 April, 1966], No. 17003/66. Heading H1T. [Also in Division H2] Coil-bobbin 13 of transformer 10 has slots through which contact pins 14 fit with tabs 29 bearing on one face of bobbin 13 and shoulders 30 on resilient prongs 26, snapped against the other, so that transformer 16 can be plugged into an electrical socket. The primary winding of coil 12 may be connected at its ends to prongs 26 (or alternatively to tabs 29) and the ends and centre-tap of the secondary winding may be connected through rectifiers 53, 54 to D.C. cable 57, condensers 55, 56 smoothing the output. Preferably the rectifiers and condensers are mounted on an insulating plate or board with printed conductors on one side. The transformer and circuit board may be surrounded by an insulating housing with a snap-fit cover, pins 14 and output cable 57 extending through openings in the housing and cover.
Patent GB-779217-A (GB)
Title: Improvements in or relating to switching circuits incorporating transistors
IPC: H03K17/60
Filed: 1955-06-14
Abstract: 779,217. Switching systems for consumption apparatus, rectifying. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. June 14, 1955 [June 21, 1954], No. 17064/55. Classes 38 (2) and 38 (4). [Also in Group XL (c)] A switch 1 for connecting and disconnecting a load 5 to and from a supply source 3 comprises transistors 15, 17, connected together and to the load and source, as shown, and controlled by a variable polarity voltage source 35 which determines whether the transistors are in a conducting or non-conducting condition. The use of two transistors renders the operation of the switch independent of the poling of the source 3. In a modified arrangement the collector electrodes of the two transistors are connected together, instead of the emitter electrodes, which are then connected, respectively, to the load and supply source. A pair of such switches 1a, 1b, Fig. 3, may control the flow of direct current through a load 73 supplied from a centre-tapped transformer 79, the control of the switches being by a transformer 95 fed by an adjustably phased square voltage wave of the same frequency as the sinusoidal voltage applied to the transformer 79. When the two voltages are in phase, switch 1b remains open and switch 1a opens during each positive half-cycle of the supply voltage wave, so that load terminal 77 becomes positive. If the phase of the square voltage wave is now shifted by 180 degrees, switch 1a remains closed and switch 1b opens during negative half-cycles of the supply, so load terminal 77 now becomes negative. For intermediate degrees of phase shift both switches are open on alternate half-cycles, respectively, but for different periods which are dependent on the phase shift. The magnitude and polarity of the direct current traversing the load is thus dependent on the degree of phase shift between the supply and control voltage waves. In a modified arrangement each switch makes use of a single transistor only.
Patent GB-481711-A (GB)
Title: The treatment of juices in centrifugal machines
IPC: A23L2/76
Filed: 1937-06-18
Abstract: 481,711. Centrifugal machines. RAMESOHL & SCHMIDT AKT.-GES. June 18, 1937, No. 17068. Convention date, June 22, 1936. [Class 23] A clarifying centrifuge, for de-aerating cider or the like and discharging it mixed with carbonic acid gas, consists of a bowl 1 fed from the vessel 2 at its top and supplying a paring chamber 5 through channels 4 at its base. The paring channels 6 lie between two discs 8, 9, the former being of less diameter than the latter, and they communicate with the discharge tube 7 and the pressure conduit 10 which contains a throttle 11 for regulating the depth of immersion of the paring discs. Carbonic acid gas is passed through the conduits 13, 14 to the space between the paring member and the bowl liner. Air is removed from the liquid during its passage through the bowl and carbonic acid gas is absorbed according to the adjustment of the gas pressure. In a modification the paring members are arranged at the top of the bowl around the inlet pipe and the gas supply channels are curved inversely to the liquid discharge channels. The channels are arranged to cross so that an injector effect helps to entrain the gas.
Patent GB-885808-A (GB)
Title: Reinforced plastic with a styrene copolymer therein
IPC: C08K5/5425
Filed: 1960-05-16
Abstract: Reinforced plastics are prepared by a process which comprises impregnating a reinforcing element with a mixture of styrene or a homolog thereof and a compound containing at least two ethylenic carbon to carbon double bonds which is a polyvinyl aromatic compound, a vinyl or allyl ester of a polybasic acid or an acrylic or methacrylic ester of a polyhydric alcohol, and polymerizing the mixture in the presence of a peroxide catalyst and a coupling agent. Specified alkyl styrenes are ortho-methyl styrene, metamethyl styrene, para-methyl styrene, ortho-ethyl styrene, para-ethyl styrene, 2,4-dimethyl styrene, 2,3-dimethyl styrene, 2,5-dimethyl styrene, paratertiary butyl styrene and 1,4-diethyl styrene. Specified cross-linking monomers are divinyl benzene, divinyl toluene, divinyl xylene, divinyl naphthalene, trivinyl benzene, triallyl acetyl citrate, triallyl cyanurate, divinyl phthalate, diallyl fumarate, ethylene glycol dimethacrylate, ethylene glycol diacrylate and trimethacrylate of p  trimethylolpropane.  The coupling agent may be a vinyl silane ester, e.g. a vinyl silane ester of the monoethyl ether of ethylene glycol, or a methacrylic acid-chromium chloride complex. The catalyst may be benzoyl or dicumyl peroxide.  The monomer mixture may also contain a high molecular weight rubber, e.g. natural rubber, butadiene polymers and copolymers, and polyisoprene; and fillers, e.g. finely divided silicas, glasses, clays and carbon blacks.  The reinforcing elements may comprise fibres of glass, asbestos, mica, rock, cotton, linen, rayon, silk, hair, nylon, polyacrylonitrile, or metal filaments or wires, e.g. of iron, aluminium or copper.  Reinforced plastics prepared by the process of the invention may be in the form of laminates or pipes.
Patent GB-881069-A (GB)
Title: Improvements in electrical connectors
IPC: H01R13/71
Filed: 1960-05-16
Abstract: 881,069. Two-part couplings. SOC. INDUSTRIELLE DE LIAISONS ELECTRIQUES. May 16, 1960 [May 29, 1959], No. 17258/60. Class 38(1). An element 2 of a connector is provided with a diametrically opposed pair of part annular ribs or tenons 5a and with bosses 7a, 8a having flanges 9a, 10a. Part annular grooves 13a, 14a are adapted to receive tenons 5 of a similar element 1, and grooves 13, 14 of the element 1 receive the tenons 5a of element 2. The elements are mechanically interengaged by relative rotation thereof. Latching devices comprise a pin 41a secured to a leaf spring 42a which urges the pin towards the centre of the element. The pin 41a co-operates with a cam 45 having a helical ramp 51, and a pin 55 projecting radially from the cam limits the displacement of the cam to half a turn by engagement with bosses 52, 56. Assuming the connector is in its engaged condition, the pin 41a of element 2 is entrapped between the high part of cam 45 and boss 56 of element 1, and pin 41 of element 1 is entrapped between cam 45a and boss 56a of element 2. The elements 1, 2 are thus prevented from relative rotation and cannot be separated. To disengage the connector, the cam 45 is first rotated to the position shown in Figs. 3, 4, and the cam 45a to a corresponding position. The pins 41, 41a are now able to slide over the low part of the cams and the elements are able to rotate to an intermediate position where the pins engage the bosses 52, 52a. To permit further relative rotation between the elements, the two cams are returned to their original positions whereby the pins are moved upward along the ramps 51, and are level with the upper surface of the bosses 53, 53a. The disengaging movement of the connector is now able to continue to that shown in Fig. 7 and the elements can be separated axially from each other. The connector includes main contacts 15, 15a, and pilot contacts 20, 20a connected with circuitry including a relay or relays (not shown) such that current can only flow through the main contacts after the pilot contacts have first been engaged to energize a relay. On disengagement of the connector to its intermediate position the pilot contacts are separated and the relay(s) have ample time to cut off the current through the main contacts before the connector elements are moved to their final disengaged position. The danger of sparking at the main contacts is thereby eliminated. During the engagement of the connector the main contacts engage each other before the pilot contacts and so are placed under power only after closure. Pins 58 inserted into radial holes 59 in the connector elements are used to rotate the elements with respect to each other. The latching device of a modification, Figs. 8-12 (not shown), includes a pawl having two claws co-operating with two stops of the other element. The disengaging process involves two compulsory delay periods.
Patent GB-922683-A (GB)
Title: Process for dyeing fibres, foils, textiles and the like
Inventor: SEIDEL FELIX
IPC: D06P1/00
Filed: 1961-05-11
Abstract: Fibres, foils, textiles and similar substrates containing at least one reactive hydrogen atom per molecule are dyed with dyestuffs containing at least one reactive hydrogen whereby the dyestuff is linked covalently to the substrate by means of compounds of the general formula <FORM:0922683/IV(a)/1> wherein x and y are whole numbers and A is a hydrogen or halogen atom, at least 2 of the A's being halogen atoms.  Preferably y is 2 and the halogen atoms are Cl or Br.  Specified crosslinking agents are the dihydrochlorides of N,N,N1,N1-tetrakis-(b -chloroethyl) - ethylene diamine and the corresponding derivative of hexamethylene diamine. Specified substrates are fibres of cotton, wool and polyamide. The dyestuffs may be soluble or insoluble in water and may contain groups such as amino, imino and hydroxy which bear the reactive hydrogen atoms.  The cross-linking agent may be applied in the presence of sodium hydroxide, together with the dyestuff or after dyeing has taken place.  Examples are given.
Patent GB-111542-A (GB)
Title: Improvements in the Method and Means of Mounting Ornaments on Pins and other Attachment Devices.
Inventor: WAREING BERNARD
IPC: A44C17/02
Filed: 1916-12-05
Abstract: 111,542. Wareing, B. Dec. 5, 1916, Combs, hair; hair slides.-Ivory, pearl, celluloid and other ornaments are attached to brooch pins, hair slides, &c., by expanding a metal cup or cups c having a serrated edge d into a recess or recesses b formed in the ornament a. The cup c may be formed by cupping up a stamped sheet blank, and may be secured to the brooch pin or other attachment by soldering.
Patent GB-1094807-A (GB)
Title: Unsaturated des-a steroid compounds, and processes for their preparation
IPC: C07J7/00
Filed: 1965-11-04
Abstract: Novel des-A-steroids having the formulae <FORM:1094807/C2/1> <FORM:1094807/C2/2> wherein R and R1 each represent an alkyl radical containing 1-4 carbon atoms, are obtained by subjecting a corresponding 5-methoxy-des - A - 18,19 - dinor - pregna - 5,7,9,16 - tetraen-20-one to reductive alkylation by reaction with an alkyl halide in the presence of an alkali metal or alkaline-earth metal solution in liquid ammonia to form 5-methoxy-13b ,17a -dialkyl-des - A - 18,19 - dinor - pregna - 5,7,9 - trien-20-one and reducing the latter with a mixed hydride so as to form the desired 5-methoxy-13b ,17a  - dialkyl - 20 - hydroxy - des - A - 19 - nor-pregna-5,7,9-triene.