baber/WOPTO huggingface dataset:
Patent GB-607684-A (GB)
Title: Improvements in or relating to luminescent screens for use in cathode ray tubes and methods of making such screens
IPC: H01J29/28
Filed: 1945-01-18
Abstract: 607,684. Luminescent screens. CINEMATELEVISION, Ltd., and HEAD, R. B. Jan. 18, 1945, No. 1512. [Class 39 (i)] Luminescent screens comprising sulphide, silicate and tungstate phosphors for use in cathode-ray tubes have applied once thereto an aqueous solution of one or more phosphates, the solution having a concentration of not more than 10 per cent and not substantially less than 7 per cent by weight so that the screen has formed thereon a layer of thickness sufficient to absorb therein the ions to a substantial extent, but not sufficient to reduce substantially the brightness of the luminescent material due to bombardment by electrons. The screen is first washed with the phosphate solution, then dried and finally baked. The phosphate solutions used should have an acid reaction to minimize permanent burning of the phosphor. The solution may contain sodium phosphate., potassium phosphate, sodium hydrogen phosphate, potassium hydrogen phosphate, lithium hydrogen phosphate or any combination of these phosphates. In a specific example a 7 per cent aqueous solution of a mixture of Na3PO4.KH2PO4 and LiH2PO4 in the approximate ratio of nine parts of the former to one of the latter is used, baking taking place at a temperature not above 350‹ C. According to the Provisional Specification a 7 per cent aqueous solution of LiH2PO4 may be used, or of a salt containing more or less lithium than is indicated by the formula.
Patent GB-1319372-A (GB)
Title: 2 2 substituted cardenolide glycosides
IPC: C07C/
Filed: 1971-01-13
Abstract: 1319372 22-Substituted cardenolide glycosides DR KARL THOMAE GmbH 13 Jan 1971 [14 Jan 1970] 1686/71 Heading C2U The invention comprises compounds of formula wherein X is F or Me; R 1  and R 2  and R 3  are each H or identical lower acyl groups, or R 1  is H or lower acyl and R 2  and R 3  together represent isopropylidene; and either R 4  is Me and R 5  is H, or R 4  is CHO or CH 2 OH and R 5  is OH. Synthesis (a): base-induced intramolecular cyclization of compounds of formula (wherein R<SP>1</SP> 1 , R<SP>1</SP> 2  and R<SP>1</SP> 3  are protecting groups, R 6  is C 1-3  alkyl, and either R<SP>1</SP> 4  is Me and R<SP>1</SP> 5  is H or R<SP>1</SP> 4  is protected CH 2 OH and R<SP>1</SP> 5  is OH) followed, where necessary by removal of protecting groups. Synthesis (b): reaction of compounds of formula III with compounds of formula IV  (wherein R 4  is as defined above with the exclusion of CH 2 OH, and Ac is acyl (e.g. acetyl or benzoyl)), followed where appropriate by removing of the acyl groups. The reaction is preferably effected in the presence of mercuric cyanide. Interconversions of compounds I disclosed are: (a) esterification and de-esterification in the sugar moiety; (b) 2<SP>1</SP>,3<SP>1</SP>-acetonization; and (c) reduction of 19-oxo to 19-hydroxy. Compounds II are prepared from the corresponding 21-ols by reaction with HO-COCH(X)-P(O)(OR 6 ) 2 . Compounds III are prepared from 3#-acyloxy- 14#, 21-dihydroxy-5#-pregnan-20-one or 3#,19- diacyloxy-5#, 14#, 21-trihydroxypregnan-20- one by the successive steps of: (i) reaction with HO-CO-CH(X)-P(O)(OR 6 ) 2  to introduce the corresponding 21-ester group, (ii) base-induced intramolecular cyclization to form the butenolide ring, (iii) hydrolysis of the 3-acyloxy group and of any 19-acyloxy group, and (iv) oxidation of any 19-hydroxy group to OXO. Pharmaceutical compositions for oral, rectal or parenteral administration comprise a cardioactive compound of Formula I and a carrier.
Patent GB-793253-A (GB)
Title: Improvements in or relating to cylinders for domestic and like hot water systems
IPC: F24D3/08
Filed: 1955-01-20
Abstract: 793,253. Hotwater supply systems. BENN, A., BENN, E. and BENN, A., [trading as BENN & SONS, A.]. Dec. 6. 1955 Jan. 20, 1955], No. 1695/55. Class 64(1) To replenish the water in the primary circuit of an indirectly heated hot water storage tank, a heat exchanger 1 located in the tank is connected near the top to a feed chamber 5 open at the bottom to the storage water and the heat exchanger or feed chamber has at the top a connection 8 with an air lock also open to the storage water. The heat exchanger is otherwise closed to the storage water. In the form shown, the heat exchanger is annular, and the chamber 5 is a cylinder connected by a pipe 7 to the heat exchanger. A pipe 8 extending upwardly from the heat exchanger or from the feed chamber 5 is bent over to form the air lock. In another form the feed chamber is an open-ended vertical pipe extending through the annular space in the heat exchanger, and through its top and bottom walls. This pipe has a hole opening into the space near the top of the latter and is bent over above the heat exchanger to form an air lock. The Provisional Specification describes a modification of this form in which the pipe is outside the heat exchanger, and a form in which part of the heat exchanger is partitioned off to form the feed chamber.
Patent GB-894102-A (GB)
Title: Purification of gases
Inventor: HASHEMI-TAFRESHI HADI
IPC: C10K1/00
Filed: 1961-01-16
Abstract: 894,102. Cold separation of gas mixtures. CONCH INTERNATIONAL METHANE Ltd. Jan. 16, 1961, No. 1713/61. Class 8(2). Removal of solidifiable inpurities e.g., hydrogen sulphide and carbon dioxide from a crude gas e.g. methane is effected by liquefying compressed crude gas without solidifying the impurities e.g. by expansion in a turbine 2, cooling in a heat exchanger 4 traversed by cold separated constitutents, expansion of crude liquid gas at a valve 8 into a chamber 9 so as to form a slurry of solid impurities and a flash-off-vapour, condensing the latter by heat exchange at 10 with purified liquefied gas and returning it to the slurry which is then expanded at a valve 20 into a separator 21 from which a concentrated slurry of solid impurities is withdrawn through a duct 32, pure liquefied gas is withdrawn through a duct 25 and is forced by a pump 26 through the condenser 10 and by a second pump 28 through a duct 31 and the heat exchanger 4 to a pure gas discharge duct. In the event of crude natural gas containing 7 mol. per cent or more of hydrogen sulphide the liquefied gas leaving the exchanger 4 comprises two liquid phases which are separated in a decanter 6 into an upper methane rich layer of liquid which is expanded into chambers 9, 13 . . . 18 in series and into a lower layer rich in hydrogen sulphide which is expanded into a chamber 37 to form a concentrated slurry and a flash-off methane vapour containing about 3% hydrogen sulphide; the cold content of the slurry and vapour being recovered in the exchanger 4. Flashed-off vapour is withdrawn from the separator 21 and traverses a heat exchanger 23 in countercurrent to a minor position of purified liquid methane leaving the pump 28 and is then passed through the exchanger 4 and a compressor 24 driven by the turbine 2.
Patent GB-439002-A (GB)
Title: Improved method of casting deoxidized copper
IPC: B22D7/00
Filed: 1935-01-18
Abstract: 439,002. Casting deoxidized copper. AMERICAN METAL CO., Ltd., 61, Broadway, New York, U.S.A. Jan. 18, 1935, No. 1764. Convention date, Feb. 1, 1934. [Class 83 (i)] Moulds; mould materials.- In casting deoxidized copper containing a small amount of phosphorus or other deoxidizer, the mould is coated with a film of water before pouring. The mould is preferably kept cold, as by water passages B and is first dressed with the usual oil mixture. Water is preferably also added during casting and may be allowed to form a pool on the molten metal in the mould. Producer gas or other oxygen excluding gas may also be introduced by a pipe L. The water may be introduced in atomized form by the gas or as steam or as a spray by means of a pipe M. During casting the water may be introduced in a stream.
Patent GB-734433-A (GB)
Title: Optical bleaching agents and process for their manufacture
IPC: C07C39/215
Filed: 1953-01-21
Abstract: Textile fibres (e.g. of cotton, rayon, wool, polyamides and polyurethanes) are whitened by treatment with oxyalkyl derivatives of compounds of the formula <FORM:0734433/IV (c)/1> where X is hydrogen, amino or acylamino and the benzene rings may be further substituted. Specified products are those obtained by condensing ethylene oxide with 4 : 41-di-(p-aminobenzoylamino)-stilbene-2 : 21-disulphonic acid and 4 - (p - aminobenzoylamino) - 41 - benzoylamino - stilbene - 2 : 21 - disulphonic acid, and propylene oxide with the former compound. Other products are mentioned.ALSO:The invention comprises the hydroxyalkyl derivatives obtained by acting on stilbene derivatives of the formula <FORM:0734433/IV (b)/1> (x=hydrogen or amino; the benzoyl radicals may contain further substituents such as alkyl or alkoxy) with compounds containing the grouping <FORM:0734433/IV (b)/2> or <FORM:0734433/IV (b)/3> The symmetrical starting materials are obtained by acylating 4 : 41-diaminostilbene-2 : 21-disulphonic acid with nitroaroyl halides and then reducing the nitro groups. Such a starting material may, if desired, be mono-acylated, e.g. with acetic anhydride, benzoyl chloride or substituted benzoyl chloride, cinnamoyl chloride or phenoxyacetyl chloride.  In the examples 4 : 41 - di - (p - aminobenzoylamino) - stilbene - 2 : 21-disulphonic acid is treated with ethylene oxide, propylene oxide, ethylene chlorhydrin and epichlorhydrin, and 4-(p-aminobenzoylamino) - 41 - benzoylamino - stilbene - 2 : 21 - disulphonic acid is treated with ethylene oxide. The following stilbene derivatives may also be treated: 4 : 41 - di - (o - aminobenzoylamino), 4 : 41 - di - (4 - amino - 3 - methylbenzoylamino), 4 : 41 - di - (3 : 5 - diaminobenzoylamino), 4 : 41-di - (2 - methoxy - 4 - aminobenzoylamino, and the following containing a 41-benzoylamino group: 4-(o-aminobenzoylamino), 4-(m-aminobenzoylamino), 4 - (3 : 5 - diaminobenzoylamino) and 4 - (4 - methoxy - 3 - aminobenzoylamino).  When ethylene oxide is used in excess a polyglycol residue can be introduced.  The products are optical bleaching agents.ALSO:Fluorescent brightening agents comprising oxyalkyl derivatives of compounds of the formula <FORM:0734433/III/1> where X is hydrogen, amino or acylamino and the benzene rings may be further substituted, are incorporated in soaps. Suitable compounds are mentioned.
Patent GB-1253293-A (GB)
Title: Biologically active n-arylpyrid-2-ones
IPC: A01P21/00
Filed: 1969-01-13
Abstract: 1,253,293. N-Aryl-pyrid-2-ones. ROHM & HAAS CO. 13 Jan., 1969 [16 Jan., 1968; 26 Nov., 1968], No. 1816/69. Heading C2C. [Also in Division C1] Novel N-aryl-pyrid-2-ones of the formula I wherein R 4  and R 6  are CH 3  or CH 3 CH 2 ; R 5  is H, CH 3 , CH 3 CH 2  or Cl; Y is Br, Cl, NH 2  or OR, wherein R is H, C 1-5  alkyl or a salt forming cation; and Aryl is wherein X is NH 2 , F, Cl, Br, I, C 1-5  alkyl, CF 3 , OCH 3  or NO 2 ; X<SP>1</SP> is F, Cl, Br, I, CH 3 , CF 3  or OCH 3  and n is 0, 1 or 2, with the proviso that X in the phenyl radical above may be H when n is 1 or 2 and there is a halogen atom in the 3- position of said benzene ring; are prepared by one of the following methods:-(a) hydrolysing the corresponding N-aryl-3-cyanopyrid-2-ones followed by separation of the compounds of the above formula I in which Y is OH and CONH 2 ; (b) reacting the corresponding C 1-5  alkyl esters of 2-pyrone-3-carboxylic acid with Aryl-NH 2  to give compounds of above formula I in which Y is OR; (c) reacting compounds of above formula I in which Y is OH with ROH or halogenating agents such as oxalyl chloride, thionyl chloride or bromide and phosphorus pentachloride. N - aryl - 3 - cyano - 4 - R 4  - 5 - R 5  - 6 - R 6 - pyrid-2-ones are obtained either by oxidizing the corresponding N-aryl-3-cyano-4-R 4 -5-R 5 -6-R 6 - pyridinium halides or by condensing beta-diketones of the formula with N-arylcyanoacetamides of the formula which are made by heating ethyl cyanoacetate with the appropriate anilines or naphthylamines. Herbicidal compositions contain at least one of the above novel compounds and adjuvants therefor.
Patent GB-1474871-A (GB)
Title: Ion-implanted self-aligned transistor device including the fabrication method therefor
IPC: H01L29/73
Filed: 1975-01-16
Abstract: 1474871 Semiconductor devices MOTOROLA Inc 16 Jan 1975 [17 Jan 1974] 1925/75 H1K A method of making a transistor structure, which may be in a repetitive pattern in an IC, wherein base contact regions 34 are separated from the periphery of the emitter 26 by a predetermined distance, includes the steps of depositing two overlying masking layers 20, 22, forming an opening 24 through which the emitter 26 is formed, etching back the underlying layer 20 at 28, removing the top layer 22 completely, forming another masking layer 32 to abut the remainder of the layer 20 which is then removed, and forming heavily doped base contact regions 34 in the base region 18. The layer 20 is of Si 3 N 4 , and layers 22, 32 are of SiO 2  in the embodiment described. As shown, each region 34 is contacted by a single layer Al base electrode 36 in an array of similar NPN transisters. A Au/Si eutectic 38 forms the common collector electrode and only emitter areas 26 adjacent the peripheries of the structure are contacted by strip electrodes (Fig. 2, not shown). The emitter and base contact regions are ion implanted; the base region 18 may alternatively be diffused.
Patent GB-1501647-A (GB)
Title: Thermal insulation of furnaces
IPC: F27D1/06
Filed: 1975-11-27
Abstract: 1501647 Thermal insulation FHD FURNACES Ltd 27 Nov 1975 [16 Jan 1975] 1958/75 Heading F2X [Also in Divisions E1 and F4] A furnace having thermal insulation at least partially comprised by a cellular structure having internal walling and a fibrous insulating filling, the said structure having at least one gas inlet to the interior thereof and the internal walling forming a tortuous gas flow path from the said at least one gas inlet through the interior of the structure. As shown, the insulation comprises a series of linked hollow compartments 2 filled with fibrous material 1, the walls of each compartment being apertured to define a tortuous flow path 4 through the insulation from a gas inlet 3 to a gas outlet 5. The gas may be used for cooling the furnace or for preheating purposes. The insulation may also be in a tubular form (Fig. 2, not shown). The thermal insulation may be used in the hearth, walls and roof of an open hearth furnace (Fig. 4), a batch furnace (Fig. 6), or in a sintering furnace with (Fig. 10) or without (Fig. 9) electric resistance heating elements.
Patent GB-711699-A (GB)
Title: Improvements relating to methods of imparting flame resistance to cellulosic textilematerials
IPC: D06M11/70
Filed: 1951-01-26
Abstract: 711,699. Guanido-type salts of phosphoric and amino-phosphoric acids. AMERICAN CYANAMID CO. Jan. 26, 1951 [Feb. 1, 1950; Feb. 1, 1950], No. 2045/51. Addition to 671,699, [Group IV (a)]. Class 2 (3). [Also in Groups III, IV (a) and VIII] Water-soluble guanido-type salts of aminophosphoric acids are made by heating together urea or dicyandiamide and the corresponding guanido-type salt of phosphoric acid or a polyphosphoric acid, such as the guanidine, biguanide, or guanylurea salt. In examples: (a) orthophosphoric acid, urea, and monoguanidine phosphate are mixed in a glass tray and heated for an hour at 160‹ C., yielding a glassy substance, (b) urea and monoguanidine phosphate are similarly heated, (c) 2 mols. urea and 2 mols. monoguanidine phosphate are heated for ¢ hour at 160‹ C., <SP>1</SP>/ 3  mol. hexamethylenetetramine is stirred in and heating continued for 20 minutes, (d) monoguanidine phosphate, dicyandiamide and water are heated for an hour at 160‹ C. yielding a foam which solidifies on cooling. Guanido-type salts of phosphoric acids are prepared, for example, from guanidine or guanylurea salts such as the sulphates or carbonates, and a phosphoric or polyphosphoric acid.
Patent GB-852969-A (GB)
Title: Improvements relating to the measurement of liquid level
Inventor: REDDING ROBERT JAMES
IPC: G01F23/70
Filed: 1958-01-21
Abstract: 852,969. Electric measuring systems. EVERSHED & VIGNOLES Ltd. Jan. 20, 1959 [Jan. 21, 1958], No. 2053/58. Class 40 (1). In apparatus for indicating the level of water in a boiler, of the type described in Specification 639,370, in which a torque proportional to the hydrostatic head in the boiler is applied to a pivoted member and is balanced by a counter-torque, the indication is corrected for variation of pressure inside the boiler. As shown, the hydrostatic head of water 2 in a boiler 1 is measured by a mercury manometer 3 which includes a magnet 8 floating on the surface of the mercury and exerting a turning force on a magnet 11 pivoted at 12. Angular deflection of the magnet 11 causes a contact 25 at the end of an arm 19 to connect a capacitor 36, which controls the potential on the grid of a triode 32, to the positive or negative terminal 28 or 29 of a D.C. supply. The anode current from triode 32 is fed to a coil 17, mounted on the arm 19, which co-operates with an electromagnet 15, the coil 16 of which is fed from a transducer 21 with current proportional to the pressure inside boiler 1, to exert a restoring torque on the magnet 11. Since the head of water is proportional to the product of the anode current and the current from pressure transducer 21, the anode current, which is indicated on a meter 23, represents the ratio of head and pressure, which is indicative of the level of the water. Specification 589,423 also is referred to.
Patent GB-248884-A (GB)
Title: Improvements in or relating to apparatus for heating or cooking by electricity
IPC: A47J37/06
Filed: 1925-01-24
Abstract: 248,884. Stokes, Sir F. W. S. Jan. 24, 1925. Electric stoves; resistance ovens.-A device for heating and cooking food and warming food receptacles comprises a cover A adapted to accommodate one or more food receptacles B and provided with an integral or detachable subsidiary chamber C containing an electric heating element D. The heating element shown is a lamp but it may consist of a fire clay disc in which a resistance is embedded or a fire clay plate having holes through which a resistance is threaded. The cover is made of aluminium, copper, silver, or nickel, and may be polished externally and internally. The chamber C carries a detachable socket F in which the heating element is mounted and a handle G forming a guide for the flex H. External lagging may be applied to the chamber. An inspection window J and a dummy socket for the plug on the end of the flex may be fitted to the cover. In a modification the cover is suspended from chains or cords fitted with counterweights and passing over pulleys mounted on standards carried by the food receptacle -support A<1>.
Patent GB-294077-A (GB)
Title: Fuse for submarine bombs
IPC: F42C9/08
Filed: 1928-01-23
Abstract: 294,077. Schwenke, P. Jan. 23, 1928. Projectile fuzes.- A fuze for exploding a bomb to be dropped into water comprises a tube a having a portion c which screws into the body of the bomb (not shown) and contains gunpowder &c. d, and a portion f within which is a glass tube g charged with a chemical such as potassium chlorate, which can be ignited by contact with an acid. Embedded in the chemical is a sealed glass tube h containing the acid, e.g. sulphuric acid. The tube f is attached to and surrounded by a casing i filled with a substance k, such as calcium carbide or sodium, which generates heat when in contact with water. The vessel i, which may be double-walled, as shown, is perforated at m. When the bomb is dropped into water, the heat evolved in the chemical action of the water on the substance k is sufficient to burst the tube h, liberating the acid, and the consequent ignition of the chlorate &c. in the tube g fires the charge d, which explodes the bomb. A percussion fuze may be provided in the bomb, in addition.
Patent GB-615911-A (GB)
Title: An arrangement for modifying the torque-speed characteristic of a series wound motor
IPC: H02K23/66
Filed: 1946-01-23
Abstract: 615,911. Automatic regulation. AKTIEBOLAGET ELEKTROLUX. Jan. 23, 1946, No. 2212. Convention date, Feb. 6, 1945. [Class 38 (iv)] [Also in Group XXXVII] The torque-speed characteristic of series-wound motor is flattened by connecting a non-ohmic resistance in shunt with the armature. In Fig. 2 the universal motor 10 has an armature 11 and series field windings 12 and 13. Throughout the running of the motor there is permanently connected across the armature 11 the resistance 20, which is of silicon carbide or other material of which the resistance varies with applied voltage-preferably such that the current varies as about the fourth power of the voltage. The resistance is mounted on the motor,. outside the casing. A condenser combination 19 is connected to the motor with the object of eliminating radio interference. The Specification as open to inspection under Sect. 91 describes also an ohmic resistance in parallel with the resistance 20. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1130532-A (GB)
Title: Ignition circuit with voltage regulator
IPC: F02P3/08
Filed: 1966-01-18
Abstract: 1,130,532. Ignition systems. TUNG-SOL ELECTRIC Inc. Jan. 18, 1966 [Feb. 24, 1965], No. 2354/66. Heading F1B An ignition system comprises a pair of breaker contacts 12 connected in series between a source of power 10 and a resistor 21, a charging transformer, the secondary winding 34 of the charging transformer being connected to a high voltage utilization circuit adapted to generate voltage pulses each time the breaker contacts are opened; a silicon controlled rectifier 40 having an anode, a cathode and a control electrode adapted to make the anode cathode circuit conductive when activated by a positive pulse, an inductor connected in series with the primary winding 33, the source of electrical power and the anode cathode circuit of the silicon controlled rectifier, a first control circuit having its input circuit connected across the breaker contacts and its output circuit connected across the control electrode of the silicon controlled rectifier and its anode the first control circuit being adapted to generate a positive pulse in its output circuit when the breaker contacts 12 are opened a second control circuit having input terminals coupled to the primary winding 33 through the inductor and to the cathode of the silicon controlled rectifier, the second control circuit including a three terminal semi-conductor switch for switching the current through the primary winding, two terminals of which switch are connected to the output terminal of the second control circuit, the second control circuit also including a voltage reference component responsive to the peak value of the current in the primary winding and electrical coupling means between the voltage reference component and the semi-conductor switch. As shown the the voltage on the Zener diode 57 is fixed and the capacitor 54 is charged from the input power source (battery 10) when the voltage is high the capacitor is charged quickly and the unijunction transistor 53 is fired a short time after the transistor 55 is made conductive. During this time interval the current in winding 33 rises to a desired peak value. When the battery voltage is low the capacitor is charged slowly and the unijunction transistor 53 is fixed a longer time after transistor 55 is made conductive. During this longer time interval the current in winding 33 rises to the same desired peak value. The switching device 45 may be either a gas filled thyratron or a silicon controlled rectifier. A modified circuit is described with reference to Fig. 2 (not shown).