baber/WOPTO huggingface dataset:
Patent GB-286279-A (GB)
Title: Improvements in or relating to high frequency circuit arrangements
IPC: H04B1/04
Filed: 1928-03-02
Abstract: 286,279. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Lindenblad, N. E.). March 2, 1927, [Convention date]. Coupling oscillating and radiating circuits.-In order to secure a tight coupling between two tuned circuits, whereby a considerable energy transfer can take place, without involving a double-humped resonance curve, and a consequent tendency of the system to swing between one frequency and the other, a part of the coupling circuit is given the characteristic of an infinite transmission line for the particular frequency it is desired to transmit. Line losses for this particular frequency will, therefore, be negligible, although they will predominate for any other frequency. As shown in Fig. 2, a source of highfrequency energy 2 feeds a tuned " tank " circuit R which is coupled to conductors 6 through blocking condensers 4. The two conductors 6 are tapped to the aerial inductance 14 at points A, B, such that the impedance between them is equal to the characteristic or surge impedance of the line 6 for the working frequency. Instead of being directly tapped to the aerial, the line 6 may be inductively or capacitatively coupled to it, provided the shunt reactance is as stated above. The line 6 may be replaced by an artificial line or impedance network. Specifications 282,905 and 283,874 are referred to.
Patent GB-549608-A (GB)
Title: Improvements relating to dry gas meters
IPC: G01F15/08
Filed: 1941-05-26
Abstract: 549,608. Gas meters. UNITED GAS INDUSTRIES, Ltd., and SIMPSON, S. May 26, 1941, No. 6735. [Class 54] The metal rims 3 carrying the diaphragms of a gas meter carry receptacles 2 into which water or other liquids entrained by the gas drain, the receptacles being fitted with float valves 5 for the discharge of the accumulated liquid into the lower part of the meter casing or to a conduit leading to the outside of the meter. The float may be mounted on the valve spindle or operate a lever connected to the valve or valve spindle. A single receptacle may be connected to both diaphragm chambers.
Patent GB-493260-A (GB)
Title: Inductance devices of the type employed as frequency changers
IPC: H01F38/04
Filed: 1938-03-04
Abstract: 493,260. Frequency - changing transformers. STANDARD TELEPHONES & CABLES, Ltd. March 4, 1938, No. 6850. Convention date, April 29, 1937. [Class 38 (ii)] In a frequency-changing transformer of the saturable-core type, the saturable material is applied around a conductor which forms a short-circuited secondary winding linking a laminated core 5 carrying a primary winding 6. The secondary may comprise one or more turns, and the saturable material which may be that disclosed in Specification 274,136, [Class 82 (i)], may be applied thereto in the form of a spirally wound tape 9 extending over the whole or a part of the length of the conductor. Specification 477,875 also is referred to.
Patent GB-458581-A (GB)
Title: Improvements in or relating to processes of improved shortening, and the improved shortening resulting therefrom
IPC: A23D9/013
Filed: 1935-03-05
Abstract: In preparing a mono- or diacid glyceride or a mixture thereof for use in shortening, 100 parts by weight of hydrogenated soya bean oil are heated with 30 parts of glycerine to 550 DEG  F. until all the glycerine that will be absorbed is taken up, the excess of glycerine being then settled off and the product deodorized in a current of steam under vacuum.  Reference has been directed by the Comptroller to Specifications 425,980, and 425,981, [Group I].ALSO:The process described in the parent Specification is modified by adding to the shortening as the mono- or diacid glyceride or mixture thereof, that prepared by reacting hydrogenated soya bean oil with an excess of glycerine, this glyceride or glyceride mixture acting as a rancidity-preventing agent.  The amount of glyceride added may be about 5 per cent.  Reference has been directed by the Comptroller to Specifications 425,980 and 425,981, [both in Group I].ALSO:The process described in the parent Specification is modified by adding to the shortening as the mono- or diacid glyceride or mixture thereof, that prepared by reacting hydrogenated soya bean oil with an excess of glycerine, this glyceride or glyceride mixture acting as a rancidity-preventing agent.  The amount of glyceride used may be about 5 per cent.  The glyceride may be prepared by heating to 550 DEG  F. 100 parts by weight of hydrogenated soya bean oil with 30 parts of glycerine until all the glycerine that will be absorbed is taken up, settling off the excess glycerine and deodorizing in a current of steam under vacuum.  Reference has been directed by the Comptroller to Specifications 425,980 and 425,981.
Patent GB-1055842-A (GB)
Title: Improvements in and relating to sulphonates
IPC: C07C303/20
Filed: 1965-02-18
Abstract: Sulphonates are prepared by the addition of bi-sulphite to organic double bonds in aqueous medium and in the presence of catalysts, 15% mol., based on the double bond-containing compound of solution aids in the form of 10 to 80% aqueous solutions being added to the aqueous reaction mixture at elevated temperatures, and the catalyst being added over a period of up to two-thirds of the total reaction time, continuously or in regular intervals. The reaction is preferably carried out at a temperature of 80-100 DEG  C. and a pH between 5 and 7.  Specified catalysts are hypochlorous acid and chlorous acid or their salts, chlorine dioxide, oxygen and organic oxidizing agents, e.g. p-toluene (N - methyl - N - nitroso)-sulphonamide, alkyl nitrites and t-butyl perbenzoate.  The olefinic starting materials may be aliphatic olefins, partly hydrogenated aromatic compounds, alkenyl aromatic compounds, unsaturated esters or unsaturated ethers, amines, carboxylic amides, or sulphonamides or polyunsaturated compounds with a conjugated or unconjugated position of the double bonds. Suitable solution aids are hydrotropic substances such as alkali metal acetates, alkali metal benzoates, and most water-soluble sulphonates and surface-active substances of anionic character. The use of solutions of sulphonates which are to be prepared in the reaction is usually preferred. The bisulphites are generally used in amounts of about 1.5 mol. per mol. of olefinic double bond.  Examples are given in which the unsaturated compound is allyl laurate, allyl stearate, 1-dodecene, 1-octadecene, methyl undecylenate, cyclohexene and cyclohexa-1,3-diene.
Patent GB-1309692-A (GB)
Title: N-substituted lactams
IPC: A61K31/4015
Filed: 1970-02-13
Abstract: 1309692 N-Amidoaldyllactams UCB SA 19 April 1971 [13 Feb 1970] 6978/70 Addition to 1039113 Heading C2C Novel compounds of Formula I wherein X is a hydrogen atom or an alkyl, alkenyl or alkynyl radical containing 1 to 6 carbon atoms, p is a whole number of from 1 to 6, Y is a hydrogen atom or an alkyl, alkenyl or alkynyl radical containing 1 to 6 carbon atoms or a cycloalkyl radical and R<SP>1</SP> and R<SP>11</SP>, which may be the same or different, are hydrogen atoms or alkyl, alkenyl, alkynyl, cycloalkyl or aryl radicals or R<SP>1</SP> and R<SP>11</SP>, together with the nitrogen atom to which they are attached, form a heterocyclic radical which may contain further heteroatoms, with the proviso that at least one of the symbols X and Y is other than a hydrogen atom are prepared by one of the following methods: (a) a compound of formula wherein M is an alkali metal atom is reacted with a compound of formula (b) an ester of Formula IV where Alk is alkyl or (c) an acid chloride of Formula VI is reacted with the amine H.N.R<SP>1</SP>R<SP>11</SP>, and (d) an ammonium salt of formula is heated. Esters of Formula IV above are prepared by reacting the sodium derivative of the appropriate pyrrolidin-2-one with the appropriate alkyl haloalkylcarboxylate and optionally hydrolysed to the corresponding acids which may be converted into their ammonium salts and acid chlorides by reaction with ammonia or thionyl chloride respectively. Pharmaceutical compositions in conventional forms for oral, parenteral or rectal administration to be used in treatment of motion sickness, hyperkinesia, hypertonia, epilepsy and mnesic conditions comprise an above novel compound and an excipient.
Patent GB-553854-A (GB)
Title: Improvement in regenerators
IPC: F28D17/02
Filed: 1942-05-26
Abstract: 553,854. Regenerators. SEMET-SOLVAY ENGINEERING CORPORATION. May 26, 1942, No. 7116. Convention date, Sept. 6, 1941. [Class 51 (ii)] [Also in Group XIII] In a reversible regenerator comprising a chamber to or from which fluid medium is supplied and exhausted alternately by a manifold provided with inlet or outlet ports communicating with the chamber, certain of the ports have gradually diverging side walls connecting top and bottom openings defining the ports and the top openings of the ports as well as the bottom openings are of varying dimensions to ensure uniform or predetermined flow of the fluid medium to and from the chamber. The invention is particularly applicable to coke ovens and Figs. 1 and 3 show one type of coke oven having outer regenerators 35, 37 and inner regenerators 36 communicating respectively with bus flues 42, 43 by means of ports 48 in the upper walls 49 of the bus flues for the supply of air or gas to the regenerators and the exhaust of waste gases therefrom. During the operation of the coke oven air or gas is supplied to the outer regenerators while waste gases are exhausted from the inner regenerator and vice versa. As shown in Figs. 4 and 6, the ports 48 in the lower wall 49 of the outer regenerators 35, 37 are arranged in groups which have tapered ports with the exception of an intermediate group in the wall 49 of the inner regenerator 35 which has a group of parallel sided ports also. The ports in the lower wall 49 of the inner regenerators 36, Fig. 5, are arranged in groups of tapered ports with an intermediate group of parallel sided ports. The ports may be circular, elliptical or rectangular in cross section.
Patent GB-220583-A (GB)
Title: An improved apparatus for playing a spinning top game
IPC: A63F9/16
Filed: 1924-03-20
Abstract: 220,583. Parker, J. S. March 20, 1924. Games of chance.-Apparatus for playing a game comprises a board having a groove or recess 2 around its edge, a recessed centre 7 for the peg of a spinning-top 10, a raised surface 3 with a series of numbered spaces 4 adjacent to the groove, a series of counters 6 or other articles to be placed on the spaces, and a strip 12 of magnetized steel which rests on the board and engages the spindle of the top by magnetic attraction. As the top rotates, the strip 12 is thrust to and fro and it may displace some of the counters and push them into the recess. The numbers uncovered by the displacement of the pieces indicate the score.
Patent GB-762991-A (GB)
Title: Improvements in or relating to the manufacture of n:n -dibenzylethylenediamine
Inventor: JONES WILLIAM GLYNNE MOSS
Filed: 1954-03-12
Abstract: N : N1 - Dibenzylethylenediamine is obtained by the interaction of ethylene diamine and a benzyl halide in the presence of an aqueous solution of a caustic alkali initially of at least 50 per cent strength weight for weight.  In an example benzyl chloride is added to a mixture of ethylene diamine monohydrate caustic soda and water. The desired product is extracted from the reaction mixture, and in a solution containing toluene and acetone is converted with acetic acid to the diacetate which separates on cooling the mixture.
Patent GB-291335-A (GB)
Title: Improvements in or relating to furnaces
IPC: F23M3/00
Filed: 1927-06-14
Abstract: 291,335. Dann, C. B., and Thoresby, F. June 14, 1927. Divided on 290,846. Firebridges of the kind comprising a hollow vertical partition closed at the top by a plurality of cover pieces are supplied with steam by a pipe a having two discharge portions b. b<1> provided with perforations and angularly adjustable relatively to one another so that the angle between the two sets of steam can be varied. The jets first converge and then spread out fanwise. Before discharge the steam is passed through a superheating coil c. A light vaporized oil is supplied to the bridge by a pipe d formed with a series of convolutions near the grate bars e, the vapour passing to curved pipes f and issuing at h through openings in the cover-pieces.
Patent GB-435108-A (GB)
Title: Improvements in the manufacture and production of complex metal compounds of dyestuffs
IPC: C09B45/01
Filed: 1934-03-07
Abstract: Complex metal compounds of dyestuffs are made by treating the disazo dyestuff dianisidine \sQ a naphthol or a hydroxynaphthoic acid arylide with a heavy metal salt of an organic carboxylic acid of high molecular weight such as a higher fatty acid, a resin acid or a naphthenic acid.  Organic solvents or substances which depress the melting point of the salt may be added.  The process may consist in triturating in a suitable mechanical device a mixture of the dyestuff, the metal salt and an organic vehicle, the reaction temperature being developed by the friction heat of the moving parts of the mechanical device.  Salts specified are stearates, oleates, linoleates, naphthenates and resinates of chromium, copper, iron, nickel, cobalt and lead.  Printers' varnishes are specified inter alia as solvents.  The products from stearates may be used for colouring candles.  In examples: (1) a mixture of the dyestuff dianisidine \sQ b -naphthol, copper stearate and xylene is boiled; the product is blue and suitable for printing varnishes; (2) the same dyestuff is triturated with a printing varnish and copper linoleate and the mixture heated; the trituration may be carried out on rollers; the copper compound of the starting dyestuff may be similarly treated and also with chromium linoleate; (3) the dyestuff of (1) is boiled with chromium stearate and trichlorobenzene (greenish blue); the dyestuff dianisidine \sQ 2 - 3-hydroxynaphthoic acid anilide also yields a greenish-blue product when similarly treated. Specification 309,148, [Class 2 (iii)], is referred to.
Patent GB-819655-A (GB)
Title: Improvements in or relating to ball or roller bearing mountings
IPC: F16C35/067
Filed: 1956-03-08
Abstract: 819,655. Bearing mountings. LADEN S.A. March 8, 1956 [March 10, 1955], No. 7272/56. Class 12 (1). A ball or roller bearing mounting comprises a cylinder 2, the wall of which is formed with a slit 5, extending over substantially half the circumference of the cylinder, and an axial slit 4 disposed centrally of the circumferential slit so as to form two mutually opposed arms, each extending over approximately one quadrant of the cylinder. A collar 7 is disposed around the cylinder and is tightened to deform the arms to adapt the diameter of the cylinder to that of the bearing located therein. The cylinder 2 is integral with a base plate 1. In a modification, shown in Fig. 5, the collar 7 has circumferential flanges 7A, 7B.
Patent GB-934992-A (GB)
Title: Improvements in fuel feeding devices for furnaces and boilers
Inventor: LAUDER JOHN PATON
IPC: F23K3/06
Filed: 1960-10-06
Abstract: 934,992. Fuel hoppers. JAMES HODGKINSON (SALFORD) Ltd. Oct. 6, 1960, No. 7295/62. Divided out of 934,991. Class 78 (1). Fuel is fed from hopper B by reciprocating plate A, the ram a 1  of which is withdrawn completely from the hopper on its backward stroke. The plate is driven from crank g via rod g<SP>1</SP>, member h, pin-and-slot e, h<SP>1</SP>, and toothed quadrant E. The pin-and-slot cause the movement to have a " dwell " therein, and scraper D scrapes the plate A.
Patent GB-563876-A (GB)
Title: Apparatus for measuring the flow of gases
IPC: G01F1/704
Filed: 1943-05-08
Abstract: 563,876. Fluid-flow meters. ROSENFELD, L., and INSTITUTION OF AUTOMOBILE ENGINEERS. May 8, 1943, No. 7320. [Class 97 (iii)] The rate of flow of air or a gas is measured by causing the air to push films or droplets of liquid up a measuring tube and noting the time taken by each film to pass from one calibration mark to another on the tube. The air is supplied to a chamber 2 containing oil which is carried in successive droplets up an inclined passage 6, through a frustro-conical bore 9 and up a vertical glass tube 10 bearing graduation marks 11, 12. The droplets spread at the frusto-conical bore and form an oil film. For verv low rates of flow where the oil film breaks before, reaching the top graduation 12, a graduated scale is fixed behind the glass tube. A baffle 20 prevents oil being carried into an outlet 17. The oil is replenished through filling orifice 23. A screw plunger may be fitted to the chamber 2 to permit the oil level, and consequently the rate of formation of oil films, to be adjusted.
Patent GB-1498296-A (GB)
Title: Method of forming a phototropic layer
IPC: G02B1/10
Filed: 1975-02-21
Abstract: 1498296 Coating with glass AMERICAN OPTICAL COR 21 Feb 1975 [29 Nov 1974] 7460/75 Heading C1M [Also in Division C4] A method of forming a phototropic layer on an optical element comprises (a) applying to a clear surface of the element a solution comprising a silver nitrate and a material which is convertible to a glass comprising SiO 2  optionally together with P 2 O 5  or B 2 O 3  and (b) treating the surface in a halogen containing atmosphere in darkness under conditions to form a layer of glass containing silver halide. The layer may contain 5 to 60 mole per cent of Ag ions and 8 to 85 mole per cent of Cl and/or Br ions and may be <20 Á thick. The solution may contain a sensitizer such as copper nitrate, and the convertible compound may be tetra-ethyl-orthosilicate, alternatives being specified by trade names. A detailed example is disclosed. Step (a) may be by dipping or spin casting. The substrate may contain an optically polarizing layer and may be a polymer of diallyl glycol carbonate, polymethylmethacrylate or a polycarbonate, or inorganic material such as glasses of compositions A to L in the Table (not shown). Applications include sunglass lenses (ophthalmic or piano), image displays, storage systems and windows.
Patent GB-747517-A (GB)
Title: Improvements in and relating to the operating mechanism of tabs of aircraft control surfaces
IPC: B64C13/00
Filed: 1954-03-15
Abstract: 747,517. Aircraft. BLACKBURN & GENERAL AIRCRAFT, Ltd., and SPRINGHAM, J. March 15, 1954, No. 7495/54. Class 4. Operating gear for the tab 1 of an aircraft control surface, e.g. an elevator 3, comprises means 4 axially movable to impart movement to the tab, connected to a lever carrying a cam follower located in a cam slot in a lever pivoted to a fixed part eccentric to the surface hinge axis, so that on angular movement of the control surface, the cam slot lever rocks the other lever to adjust the tab, the cam slot lever being readily replaceable by one having a differently shaped cam. In Fig. 1, the tab is operable by a longitudinally movable tube 4 pivotally connected at 7 to a lever 8 rotatably mounted on a shaft 9. Pivoted at 12, eccentric to the elevator hinge axis 13, is a lever 11 having a slot 10 engaging a block 9<SP>1</SP> rotatably mounted on shaft 9, and a slot 15 engaging a roller 14 on one limb of lever 8. Movement of the elevator about axis 13 makes block 9<SP>1</SP> slide along slot 10, and roller 14 in slot 15 rotates lever 8 to alter the relationship of the tab and elevator. Independent operation of the tab is possible by rotating member 18 keyed to slider 17 which rotates a screw jack 16 to lengthen tube 4, which may also be connected by link 21 to an indicator 22 to indicate to the pilot the extent of trim.
Patent GB-285667-A (GB)
Title: Improvements in brushes
IPC: B25G3/38
Filed: 1927-03-18
Abstract: 285,667. Shaw & Co., Ltd., A., and Rose, C. E. March 18, 1927. Pivoted handles. - The handle 5 of a brush of a fireside companion set, banister brush, paint brush &c. is pivoted on a pin 7 between lugs 2 on a bracket secured to the brush back and has a head 6 formed with end and side bearing faces 8 coacting with a flat spring 4 interposed between the head 6 and brush back to lock the handle in different angular positions. The bent ends of the spring 4 bear against tongues 3 pressed up from the base of the spring, or the latter may be slotted so that the bracket bears on the brush back, or the spaced lugs may be inturned to provide a seating for the blade spring. The handle may have the usual looped end for hanging it up.
Patent GB-453500-A (GB)
Title: Improvements in or relating to piezo electric crystal arrangements
IPC: H03H9/10
Filed: 1935-03-11
Abstract: 453,500. Mounting piezo - electric crystals. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, and BRETT, G. F., 25, Fitzroy Square, both in London. March 11, 1935, No. 7568. [Class 40 (v)] A piezo-electric crystal oscillator is mounted in a casing, which is first exhausted to a fairly-complete vacuum, and then refilled with hydrogen gas to a pressure of more than half an atmosphere, and sealed off. A higher pressure of hydrogen can be used than of air, for the same amount of damping, whilst the presence of a greater mass of gas introduces more convection and therefore gives greater sensitivity to thermostatic control.
Patent GB-941933-A (GB)
Title: A method of controlling a process for the thermal treatment of a solid material on a travelling grate
IPC: C22B1/20
Filed: 1962-02-27
Abstract: 941,933. Controlling heat treatment furnaces. METALLGESELLSCHAFT A.G. Feb. 27, 1962 [Sept. 28, 1961], No. 7680/62. Heading F4B. A method of controlling a process for the thermal treatment of a solid material on a travelling grate comprises measuring the temperature of the gas which has passed through the material at four points, three near the discharge end of the bed and the fourth just after (in the direction of travel of the grate) the place where the curve of the gas temperature ceases to be linear, and feeding signals from these points to a controller which controls the speed of travel of the grate. The coarse control signal is derived from the point M (see the curve in the schematic Figure) and the three measurements for the fine control are taken near the discharge end of the grate and the speed of travel of the grate so adjusted that the middle reading is higher than those either side.
Patent GB-515734-A (GB)
Title: Pneumatic tyres
IPC: D07B1/06
Filed: 1938-03-11
Abstract: 515,734. Pneumatic tyres. MICHELIN & CIE. March 11, 1938, No. 7682. Convention date, March 11, 1937. Drawings to Specification. [Class 144 (ii)] [Also in Groups V and VIII] The foundation casing of a pneumatic tyre cover comprises two or more layers of multiplestrand cables each consisting of three or more wires or cables twisted together without a core, the enveloping rubber, and/or the metal of the individual strands being treated to ensure direct adhesion between these parts. Such treatment may consist in brass-coating the metal, or subjecting the rubber to a treatment such as is described in Specification 339,421, [Class 70].