baber/WOPTO huggingface dataset:
Patent GB-738612-A (GB)
Title: Process for the production of a heteroside of meadow saffron and new product obtained in the course thereof
IPC: C07H15/248
Filed: 1953-03-24
Abstract: The invention comprises: (a) the acetate of colchicoside, having one of the constitutions represented by the formula <FORM:0738612/IV (b)/1> (wherein one of the symbols R1 represents <FORM:0738612/IV (b)/2> and the other two represent methyl groups); (b) the production thereof from the constituent of meadow saffron named "Substance C" (Santavy and Reichstein) by condensing its free phenolic group with a -acetobromoglucose; (c) the preparation of colchicoside by alcoholysis of the acetate in the presence of an alkali and a lower (1-5 C) aliphatic alcohol.  The alcoholysis in (c) may be effected with methanol, ethanol or propanol and dilute caustic soda or caustic potash, and if the resulting colchicoside does not crystallize out directly it may be extracted with a mixture of a lower aliphatic alcohol and an aliphatic chlorinated hydrocarbon (e.g. a 1 : 3 mixture of ethanol and chloroform).  The acetate is also obtainable by direct acetylation of colchicoside obtained from natural sources by the process of Specification 732,265.  An example is given of processes (b) and (c) above.
Patent GB-751992-A (GB)
Title: A process for the preparation of water-soluble organosilicon compositions
IPC: C07F7/08
Filed: 1954-03-19
Abstract: In making a water-soluble organosilicon composition which is stable in aqueous solution, one or more silanes of the formula RnHmSi(OR1)4-n-m where R is a monovalent hydrocarbon radical containing less than 7 carbon atoms, R1 is a methyl or ethyl radical, n has an average value from 1 to 2, m has a value from 0 to 1 and the sum n+m has a value not greater than 2, are heated with water at 75 DEG  to 105 DEG  C. and at a pH of 5 to 8 until a homogeneous solution is obtained.  If desired, the water and byproduced alcohol may be removed, preferably at reduced pressure.  The products have a hydroxyl content of from 15 to 35 per cent by weight and are insoluble in hydrocarbons but soluble in polar solvents, e.g. alcohols and dioxane. Hydrocarbon radicals specified are methyl, ethyl, hexyl, vinyl, allyl, hexenyl, cyclohexyl, cyclohexenyl, cyclopentyl and phenyl. The compositions are useful as release agents, water-repellants on fabrics, textiles, ceramics and masonry, sizing agents for glass fibres, and in the treatment of human hair. Examples are given.ALSO:The compositions prepared by heating one or more silanes of the formula RnHmSi(OR1)4-n-m, where R is a monovalent hydrocarbon radical containing less than 7 carbon atoms, R1 is a methyl or ethyl radical, n has an average value from 1 to 2, m has a value from 0 to 1 and the sum n+m has a value not greater than 2, with water at 75 DEG  to 105 DEG C. and at a pH of 5 to 8 until a homogeneous solution is obtained (see Group IV(a)) are useful in the treatment of human hair either to prevent kinking of the hair or to prolong the life of permanent waves.  For use on hair the solution is applied in the desired amount and the hair is then heated to fix the siloxane.  If desired, a catalyst may be used to hasten the cure and lower the curing temperature of the siloxane.
Patent GB-790555-A (GB)
Title: Improvements in pipe couplings for steam heating installations, in particular for rail vehicles
IPC: F16L37/12
Filed: 1955-03-22
Abstract: 790,555. Pipe couplings. SATZGER, E. March 22, 1955 [March 23, 1954; July 20, 1954], No. 8334/55. Class 99(1). In a pipe coupling, including a rotary spherical valve, for steam heating installations, in particular for rail vehicles, the casing 1 of the valve is provided with oppositely-disposed bearing surfaces 7, 8 the distance apart of which corresponds approximately to the internal distance between the legs 91, 9<SP>11</SP> of a connecting stirrup 9. As shown, the bearing surfaces, which prevent distortion or stretching of the stirrup when the screw 10 is tightened, are formed on projections 5, 6, the plane of the latter, in order that already deformed stirrups may continue in use, being offset in respect of the plane B perpendicular to the plane A of symmetry of the valve casing. The orifice 2 of the casing is provided with an externally, screw-threaded, tubular part 11 screwed into position and sealed with manganese or red lead putty.
Patent GB-371555-A (GB)
Title: An improved process for the manufacture of acetamide and acetic acid
Filed: 1931-03-18
Abstract: Acetamide is obtained by causing hydrogen to react on formamide, or on a mixture of carbon monoxide and ammonia, under the influence of ultra-violet or infra-red radiations.  The reaction between hydrogen and formamide takes place at ordinary pressure and at temperatures between 200 and 500 DEG  C.  When carbon monoxide and ammonia are used, pressures of at least 100 kg. per sq. cm. and temperatures between 100 and 300 DEG  C. are employed. Catalysts consisting of pumicestone, carbon powder, finely divided metals, particularly copper, or metal oxides such as aluminium oxide may be present. According to an example, formamide vapour mixed with hydrogen is passed at 250-300 DEG  C. through a quartz tube containing pumicestone, carbon powder, copper powder, aluminium oxide, or a mixture of the two latter substances, under the influence of ultra-violet light from mercury vapour lamps.  By cooling the exit gases, acetamide is obtained.  The Specification as open to inspection under Sect. 91 (3) (a) describes also the production of di- and tri-acetamide and of glycocoll by the reaction referred to above.  This subject-matter does not appear in the Specification as accepted.ALSO:Acetamide, which may subsequently be converted to acetic acid by hydrolysis, is obtained by causing hydrogen to react on formamide, or on a mixture of carbon monoxide and ammonia.  The reaction between hydrogen and formamide may take place at ordinary-pressure and at a temperature between 200 and 500 DEG  C. When carbon monoxide and ammonia are substituted for formamide, pressures of at least 100 Kg. per sq. cm. and temperatures between 100 and 300 DEG  C. are employed.  Both reactions are facilitated by the presence of catalysts consisting of pumicestone, carbon powder, finely divided metals, particularly copper, or metal oxides such as aluminium oxide, and by the influence of ultra-violet or infra-red radiations.  According to examples, (1) formamide vapour mixed with hydrogen is passed at 250-300 DEG  C. through a quartz tube containing pumicestone, carbon powder, copper powder, aluminium oxide, or a mixture of the two latter substances, under the influence of ultra-violet light from mercury vapour lamps.  By cooling the exit gases, acetamide is obtained, which is hydrolysed in known manner to acetic acid; steam may be added to the initial mixture to facilitate the reaction; and (2) a mixture of carbon monoxide and hydrogen obtained, for example, by passing steam over red-hot carbon, is passed together with ammonia under a pressure of 100 Kg. per cm., and at 250-300 DEG  C. over the same catalysts as in (1) above, the acetamide obtained being hydrolysed to acetic acid as before.  The Specification as open to inspection under Sect. 91 (3) (a) refers also to the production of di- and triacetamide and of glycocoll by the action of hydrogen on formamide.  This subject-matter does not appear in the Specification as accepted.
Patent GB-692326-A (GB)
Title: Improvements in or relating to sheet materials containing fibers, cork particles anda rubber-like binder and method of making same
IPC: D21H17/02
Filed: 1951-04-11
Abstract: 692,326. Fibrous sheets containing cork &c. ARMSTRONG CORK CO. April 11, 1951. [June 16, 1950 ; Jan. 26, 1951] No. 8391/51. Class 96. Material for low cost gaskets, underlays for rugs, or cushioning for windows &c. in motor cars &c. is made from fibrous pulp e.g. of kraft, sulphite, cotton linters, asbestos, or glass or nylon filaments to which is added e.g. nearly an equal weight (on the fibre) of very small cork particles or cork dust, and a dilute solution of aluminium chloride, ferric chloride, or stannic chloride &c. which is reacted with ammonium hydroxide &c. to form the polyvalent metal hydroxide, which is of limited solubility, adding synthetic rubber latex e.g. a butadiene-styrene co-polymer, butadiene-acrylonitrile, neoprene, or homo-polymers of butadiene, acid e.g. acetic being then added slowly to coagulate the synthetic rubber, and release aluminium ions to precipitate it and the cork on to the fibres which are then felted, as on a paper-making machine. Anti-oxidant and dye may be incorporated.
Patent GB-622814-A (GB)
Title: Improvements in and relating to electric switch contacts
IPC: H01H1/08
Filed: 1944-05-04
Abstract: 622,814. Contacts. BRITISH THOMSONHOUSTON CO., Ltd. May 4, 1944, No. 8442. Convention date, May 6, 1943. [Class 38(v)] A switch contact designed to avoid sticking and welding is formed of silver, or other highly conducting material, with a thin coating of mercury at its operating face. The mercury is preferably coated on the silver by electro plating, but dipping in mercury for a period may also be used. The silver is preferably substantially pure, but an alloy of silver with only a small quantity of another metal, e.g..5 per cent of Zn may be used. The invention is applied to a switch wherein operation of a cam-shaped finger piece 13 depresses a slide 10 against the action of springs 12 and moves three pairs of contacts 8 loosely carried by the slide 10 away from fixed contacts 5. Specifications 13215/08, [Class 38], 543,935 and 604,272 are referred to.
Patent GB-1004131-A (GB)
Title: Reclamation of succinic and/or glutaric acid from chemical process streams
IPC: C07C51/56
Filed: 1962-03-05
Abstract: A mixture of organic dibasic acids containing adipic acid, glutaric acid and succinic acid, said mixture being substantially free from nitric acid and water, is heated to a temperature of from 190 DEG  C. to 280 DEG  C. under a reduced pressure for a time sufficient to dehydrate the succinic acid to the anhydride, the succinic and glutaric anhydrides produced, together with the water of dehydration are distilled, and the succinic and glutaric anhydrides are recovered from the make of the distillation.  The anhydrides may be distilled from the mixture of acids simultaneously or the glutaric anhydride and the water of dehydration may be distilled subsequent to the distillation of the succinic anhydride. The anhydrides may be subsequently separated from each other by distillation.  The bottoms product of the distillation may be added to water and cooled to precipitate adipic acid.  An azeotroping agent may be added to the mixture of acids prior to the distillation. The mixture of acids may be the mother liquor remaining after crystallisation of adipic acid from the reaction product obtained by the nitric acid oxidation of cyclohexanol and/or cyclohexanone, which mother liquor has been treated to remove substantially all the nitric acid, water, volatile substances and catalyst, if present, processes to achieve these separations being described.  Examples are given.
Patent GB-164760-A (GB)
Title: Improvements in gun mounting
IPC: F41A27/02
Filed: 1917-06-13
Abstract: 164,760. Hamilton, B. T. June 13, 1917. Mountings for use on aircraft. - Relates to mountings having means for neutralizing the recoil by the rearward discharge of a dummy projectile, and consists in providing an arm on the gun which coacts with a camsurface on the fixed vertical pivot of the mount so as to limit the elevation or depressiun of the gun in training-zones where firing would endanger adjacent structures. A non-recoil gun B of the Davis type suitable for mounting on aircraft is shown supported on trunnions A' in a bracket A movable about a fixed vertical pivot C. The upper portion of this pivot carries a cam-surface D which extends throughout the danger zone of training and with which engages an arm E depending from the gun. The cam-surface may be in two parts separated by a diametral slot through which the arm E may be passed to change from elevation control to depression control. The fixed plate F relatively to which the bracket A is trained is provided with stops or recesses coacting with a removable catch G and corresponding in position to the extremities of the cam-surface.
Patent GB-559167-A (GB)
Title: An improved soluble cutting oil
IPC: C10M173/00
Filed: 1942-06-24
Abstract: 559,167. Cutting oils and emulsions. STANDARD OIL DEVELOPMENT CO. June 24, 1942, No. 8634. Convention date, July 19, 1941. [Class 91] [Also in Group IV] A soluble cutting oil composition comprises a mineral lubricating oil, an emulsifier, and a compound having the formula where " n " is an integer and " R " is an alkyl group, i.e. a xanthogen polysulphide, e.g. ethyl xanthogen tetrasulphide, such compound having dissolved therein excess' elemental sulphur. The sulphur compound raises the load bearing characteristics of the oil, without impairing its emulsibility with water. The compound specified may be prepared by dispersing sodium ethyl xanthate in benzol and adding thereto a benzol solution of sulphur monochloride with stirring, the sodium chloride formed being removed by filtration or water washing and the benzol then evaporated from the product. The sulphur compound with its dissolved sulphur is added in the proportion of 1 to 10 per cent., preferably 3.5 per cent., by weight based upon the oil. The mineral oil base is preferably a light mineral lubricating oil of gravity 25‹ to 31‹ A.P.I. and viscosity at 100‹ F. of 100 to 300 seconds. In a tested example, containing ethyl or isopropyl xanthogen tetrasulphide with dissolved sulphur, the emulsifying agent comprises a mixture of sodium petroleum sulphonates and sodium naphthenate. U.S.A. Specification 2,001,861 and Specification 522.189 are referred to.
Patent GB-592519-A (GB)
Title: Telephone switching key
IPC: H01H21/02
Filed: 1945-04-07
Abstract: 592,519. Switches with quick action. STANDARD TELEPHONES & CABLES, Ltd. April 7, 1945, No. 8640. Convention date, May 6, 1944. [Class 38(v)] A telephone switching key comprises two frame parts 10, 11 having a plurality of pairs of holes oppositely disposed in each, and a block 14 mounting the contact stacks 16, 17, all held together by a single screw 12. The cam body 24 is mounted on a pin 30 in one pair of holes, and carries on a pin 23 a roller 22 which engages the contact actuating springs 20, 21, and is retained on the pin 23 by a dependent lip 26 on the frame part 10. Projections 52 on the frame engage projections 51 on the cam body, limiting its stroke in either direction to the "locking position " wherein the actuating springs 20, 21, exert no return force on the cam. The stroke may be further restricted on either or both sides, to the " non-locking " position by inserting pins 54 in the upper pair of holes 29, or a two - position key may be obtained by inserting the pin in one of the lower holes 29, which blocks the motion of the cam on that side. A double-sided key may be similarly constructed Figs. 6, 7, 8, (not shown).
Patent GB-1204623-A (GB)
Title: Photographic silver halide emulsions
Inventor: BERRY CHESTER RIDLON
IPC: G03C1/09
Filed: 1968-02-22
Abstract: 1,204,623. Silver halide emulsions. EASTMAN KODAK CO. Feb.22, 1968 [Feb.23, 1967], No.8693/68. Heading G2C. Extremely fine grain emulsions having a grain size below 50 mÁ are prepared by precipitating silver halide grains in an aqueous medium in which is dissolved a heterocyclic mercaptan as a grain growth restrainer. Preferred mercaptans are those of tetra-, tri-, di and mon-azoles, particularly 3, 5-dicarboxy-1-phenyl-5-mercaptotetrazole.
Patent GB-1174272-A (GB)
Title: Quinazoline Compounds
IPC: C07D491/04
Filed: 1967-02-23
Abstract: 1,174,272. Quinazolines. CHAS. PFIZER & CO. Inc. 23 Feb., 1967 [1 Sept., 1966], No. 8764/67. Addition to 1,062,357. Heading C2C. Novel compounds of Formula IV wherein R 1  is methoxy, ethoxy or methyl, R is N - (N<SP>1</SP> - allyl) - piperazino or N - (N<SP>1</SP> - 2- furoyl)piperazino and when R 1  and R 1  together form a benzo group then R is N,N-dimethylamino, N,N - diethylamino, N,N - diallylamino, N - homopiperidino, N,N - di - (#- hydroxyethyl)amino, N - ethyl - N - allylamino, N - (N<SP>1</SP> - methyl)piperazino, N - [N<SP>1</SP>- (n - propyl)]piperazino, N - (N<SP>1</SP> - allyl)piperazino, N - monoisopropylamino, N - mono - (#- hydroxyethyl)amino or N - (N<SP>1</SP> - 2 - furoyl) piperazino and the novel compounds 2- (N,N - dimethylamino) - 7 - methoxy - 3,4 - dihydroquinazoline - 4 - one, 2 - (N,N - diethylamino) - 7 - methoxy - 3,4 - dihydroquinazoline- 4 - one, 2 - (N,N - dimethylamino) - 7 - methoxy- 4 - (3H) - quinazolinethione, 2 - (N,N - diethylamino) - 7 - methoxy - 4 - (3H) - quinazolinethione and the salts of the aforesaid compounds with non-toxic acids and bases are prepared by reaction of a compound RH with the required 2 - halo - 3,4 - dihydroquinazoline - 4 - one salt formation. Intermediates of Formula IV above wherein R is halogen are prepared by partial dehalogenation of the 2,4 dihalo compound with a dilute solution of NaOH in tetrahydrofuran followed by acidification. Pharmaceutical compositions in conventional forms for oral or parenteral administration and having anti-hypertensive action comprise an above novel compound or salt and a carrier therefore.
Patent GB-492724-A (GB)
Title: Improvements in or relating to heat transfer systems
IPC: F25B27/02
Filed: 1937-03-25
Abstract: 492,724. Heating systems. ELECTROLUX, Ltd. March 25, 1937, No. 8834. Convention date, March 28, 1936. [Class 64 (ii)] In a closed-cycle liquid-vapour heat-transfer system under high pressure and temperature, regulation of the heat transfer is effected through a control device maintained, by insulation or by cooling, at a lower temperature than the heat-delivery part of the system, whereby accurate and safe control is ensured. Heat may be transferred from engine exhaust gases in a pipe 16, Fig. 1, or from a continuously burning stove &c., by a closed system 15, 13, 12 to the generator 10 of a refrigerating system. A thermostat 24 in the refrigerating cabinet is connected by a conduit 23 to a bellows 20, the upper wall 22 of which contacts with the lower wall of a bellows 19 connected by a conduit 17 with a reservoir 14 in the heat transfer system. The conduit 17 may be of nonconducting alloy or may be finned for air cooling. When the cabinet temperature falls and less heat is required for the generator, the lower bellows collapses and the upper expands, lowering the level of heat transfer liquid in reservoir 14 below the overflow return to the hot element 15 of the transfer system and thus reducing the amount of medium in circulation. Manual control of the bellows members may be used in place of a thermostat. In the arrangement shown in Fig. 3, separate flow and return branches 32, 31 are used in the heat transfer system, and regulation is effected by regulated cooling of the branch 32 by a secondary heat transfer system comprising an evaporator element 50 around branch 32, a conduit 51 containing a control means 39, and a cooled condenser element 53. The control means comprises three bellows members 55, 56, 57, the uppermost being connected by a conduit 23 with a thermostat 24 and the intermediate one being assisted by a spring 58 to balance the fluid pressure in the secondary system. Rise of temperature at the thermostat 24 causes depression of a rod 59 connected to the ends 60, 61 of the bellows 57, 56 and allows the transfer medium to be stored up in the bellows 57 and thus prevents cooling of the branch 32. The refrigerating apparatus now receives heat to lower the cabinet temperature, until the bellows 57 again contracts to initiate and maintain a cooling effect around the branch 32. If heating of the generator 10 should be required to cease entirely for a period, as in the case of intermittent absorption refrigerating apparatus, the cooling system 50, 51, 53 must dissipate the whole of the primary heat in branch 32, and the condenser element 53 must be dimensioned accordingly. This condenser element may be used for heating water, for heating another refrigerating apparatus, or for other domestic purpose, or may be merely air cooled. In another arrangement employing a secondary system for cooling the primary transfer system, the control of this cooling is effected by a single bellows acting on a metal diaphragm adapted to close or open the mouths of parts of the condensate return pipe of the cooling system.
Patent GB-581973-A (GB)
Title: Improvements in or relating to gun mountings
IPC: F41A19/08
Filed: 1942-06-26
Abstract: 581,973. Gun mountings. MOTLEY, L. June 26, 1942, No. 8852. [Classes 92 (i) and 92 (ii)] Amounting for one or more guns is located over an opening 17 in the roof of an armoured chamber 1, and the gun is operated as to elevation, training and firing by a gunner within the chamber who manipulates a handle device 14. This device is carried by a vertical tube 4 rotatable in the fixed gun pedestal 16 for training the gun support 3, and movement of the handle device about a horizontal axis 35 on the tube 4 acts through a pinion 12 and sliding rack 5 to elevate the gun about trunnion X through the medium of gearing 8, 9, 10. The handle device comprises right- and left-hand grips which carry Bowden wire trigger mechanism 27, the cables 28 of which pass through the tube 4 and are connected to firing-levers 34 rocking on a shaft 32 carried by a built-up tubular frame 20, 29 which supports a pair of guns. The frame carries open sights viewed through slits or openings in the roof of the chamber. For stowing, the handles are movable about pivots 37 and the gun frame is placed in a horizontal position and fastened by a strut 38. Specification 448,250 is referred to.
Patent GB-1194433-A (GB)
Title: Processes and Compositions for the Regulation of Plant Growth
Inventor: FRITZ CHARLES D
IPC: C07F9/38
Filed: 1968-02-23
Abstract: 1,194,433. Herbicides containing phosphonic acids as synergists. AMCHEM PRODUCTS, Inc. 23 Feb., 1968 [23 Feb., 1967; 27 Dec., 1967], No. 8859/68. Heading A5E. [Also in Division C1] A herbicide, e.g. maleic hydrazide, 3-amino, 1, 2, 4-triazole, sodium 2, 3, 6-trichiorophenoxyacetate, monosodium acid methane arsonate, or ammonium thiocyanate, is employed together with a phosphonic acid, or an anhydried, acid chloride, mono- or diester, or salt thereof, the phosphonic acid being of the formua RPO(OH) 2  wherein R is vinyl, allyl, haloethyl, halopropyl, ,methoxyethyl, carboxymethyl, or plho'sphonoethyl.