baber/WOPTO huggingface dataset:
Patent GB-1106522-A (GB)
Title: Silicon derivative and silylation of compounds having an acidic hydrogen
IPC: C07F7/10
Filed: 1965-05-14
Abstract: The invention comprises the compound N,N-bis-(trimethylsilyl) formamide and a process for silylating compounds having an acidic proton with silyl donor compounds of formula R1(SiR3)N.CO.R11, where R is a monovalent hydrocarbon radical, R1 is R, hydrogen or SiR3, and R11 is R, hydrogen or NZ2, where Z has the same meaning as R1, preferably in the presence of a solvent. Silyl acceptor compounds mentioned are alcohols, phenols, amines, acids, amides, ureas, aminoacids, sugars, lactams, peptides, nitromethane, nitropropane and malononitrile. Silyl donors include N-(trimethyl silyl) - N - methyl - acetamide, N,N - bis - (trimethylsilyl) acetamide, N,N - dimethyl - N1-phenyl - N1 - (trimethylsilyl) urea, N - (trimethylsilyl) acetamide, N - (trimethylsilyl) formamide, N - methyl - N - (trimethylsilyl) formamide, N - (trimethylsilyl) - N,N1 - diphenyl urea, N - methyl - N1 - phenyl - N1-(trimethylsilyl) urea, N,N - bis - (trimethylsilyl) formamide, N - methyl - N,N1 - diphenyl-N1 - (trimethylsilyl) urea, N,N - dimethyl - N1-p - tolyl - N1 - (trimethylsilyl) urea, N-phenyl-N - (phenyldimethylsilyl) - N1 - cyclohexyl-urea, N - m - tolyl - N - (trimethylsilyl) - N1 - phenyl-urea, N - m - tolyl - N - (trimethylsilyl) - N1-methyl - urea, and N - phenyl - N,N1 - bis - (trimethylsilyl) urea.  The silyl donor compounds are prepared by either (i) reacting compounds of formula R1-NHCO.R11 with compounds of formula R3SiX, where X is halogen, in the presence of a halohydride acceptor, or (ii) when R11 is NZ2 and R1 is a monovalent hydrocarbon radical, by reacting silyl amines of formula R3SiNZ2 with isocyanates of formula R1NCO. In typical examples:  (1) N,N1-diphenyltri-methylsilyl urea is reacted with N,N1-dimethyl urea to give N,N1-dimethyltrimethylsilyl urea, (3) N - trimethylsilyl - N,N1 - diphenyl urea is reacted with malononitrile to give the tris-(trimethylsilyl substituted) trimer of malononitrile, (6) N - trimethylsilyl - N,N1 - diphenyl urea is reacted with guanidine to give tris-(trimethylsilyl) guanidine, (10) bis-(trimethylsilyl) acetamide is reacted with 2,6-xylenol to give 2,6-xylenyltrimethylsilyl ether and (18) N,N-bis-(trimethylsilyl) formamide is reacted with hydroquinone to give the disilylated ether of the hydroquinone.ALSO:Purified sucrose is obtained by the silylation of the impure sugar followed by separation of the impurities by distillation of the silylated product and, finally, by hydrolysis of the product to afford the purified sucrose.  The reaction of 3 mols of a disilyl urea such as N,N1-bis (trimethylsilyl)-N,N1-diphenyl-urea with 1 mole of sucrose in pyridine, followed by hydrolysis with an aqueous alcohol is specified.
Patent GB-1442992-A (GB)
Title: Devices for guiding filamentary bodies
IPC: B65H81/00
Filed: 1972-05-02
Abstract: 1442992 Filament guide UNITED KING- DOM ATOMIC ENERGY AUTHORITY 2 Aug 1973 [2 May 1972] 20463/72 Heading B8C [Also in Division D1] A rotatable, ground, filament guide pulley is mounted on a support for free rotation about a first axis normal to the pulley's rotation axis, and the support is itself mounted for free rotation about an axis at an angle to the first axis and aligned with or below the bottom of the pulley groove. Pulley 7, e.g. of P.T.F.E., is mounted to rock about shaft 15 on support 4a, the support being mounted in bearing 19 to rock about axis 5. The device is traversed so that carbon fibre tow 2 is wound on mandrel 30. Roller axis 8 is perpendicular to shaft 15. The device is counterbalanced either so that there is no tendency for it to rotate under gravity about axis 5 or shaft 15, or so that axis 8 is horizontal. For example, movable weight 13 and adjustable bolt 22 serve to counterbalance the device about shaft 15. The portion of pulley 7 over which tow 2 runs is aligned with axis 5.
Patent GB-457966-A (GB)
Title: Improvements in or relating to double-acting single piston pumps
IPC: F02M59/00
Filed: 1936-07-24
Abstract: 457,966. Fuel pumps. BOSCH AKT.- GES., R., 4, Militarstrasse, Stuttgart, Germany. July 24, 1936, No. 20490. Convention date, Aug. 8, 1935. [Class 102 (i)] A fuel pump suitable for feeding fuel injection pumps or carburetters comprises a piston 2 loaded by a spring 11 and engaged by a rod 8 actuated by a cam 10. Each of the suction and delivery passages 4, 6 is divided into branches 4<1>, 4<11> and 6<1>, 6<11> respectively, and fitted with suction and delivery valves 51, 5<11> and 71, 7<11>. A passage 12 leads to a relief valve 13 connected to the suction passage 4 which allows a byepass upon excessive delivery pressure when the piston 2 is positively actuated by the rod 8. The other stroke of the piston is determined by the spring 11 acting against the delivery pressure. Fig. 3 shows the relief valve in the form of a ring 15 sliding on a guide 17 and controlling relief ports 12 in the cylinder wall.
Patent GB-576035-A (GB)
Title: Improvements in or relating to the production of esters of iodobenzoic acids
Filed: 1943-12-08
Abstract: Hydrohalides of b -dialkylaminoethyl or substituted b -dialkylamino ethyl esters of iodobenzoic acids, having anti-tubercle activity, are produced by reaction of an iodobenzoyl halide with an N-dialkyl ethanolamine of the general formula: HO.CRR1.CR2R3.NR4R5 wherein R, R1, R2 and R3 each represent H or an alkyl, aryl or aralkyl group and R4 and R5 each represent alkyl. The parent iodobenzoic acid may carry one or more additional nuclear substituents, providing that it contains no elements other than carbon, hydrogen, oxygen and iodine, e.g. it may carry one or more additional iodine atoms and/or one or more alkyl, hydroxy, alkoxy or acyloxy groups.  Specified substituted iodobenzoyl halides are 2 : 4-, 2 : 5-, 3 : 4-, or 3 : 5-di-iodobenzoyl chlorides, 2-hydroxy-3 : 5-di-iodo-, 3 : 5-di-iodo-4 - methoxy-, and 3 : 5 - di- -iodo - 4 - acetoxybenzoyl chlorides, and 2.3.5-, 2.3.6-, and 2.4.6-tri-iodobenzoyl chlorides.  Specified ethanolamines are b -dimethylaminoethanol, b -diethylaminoethanol, b - di - n - propylaminoethanol and b  - di - isobutylaminoethanol and the N - dimethyl - a  - methyl -, N - diethyl - a  - methyl-, N - di - n - propyl - a  - methyl - N - di - isoamyl - a  - methyl -, N - idethyl - a  - ethyl -, N - diethyl - a  - phenyl -, N - dimethyl - a - benzyl -, N - diethyl - b  - methyl -, N - dimethyl - b  - phenyl -, N - dimethyl - a  : a  - di methyl -, N - diethyl - a  - a  - dimethyl -, N - dimethyl - a  - methyl - a  - ethyl -, N - diethyl - a  - methyl - a  - ethyl -, N - dimethyl - a  - methyl a  - n - propyl -, N - diethyl - a  - a  - diethyl-, N-dimethyl - a  - methyl - a  - phenyl -, N - diethyla -methyl-a -phenyl-, N-dimethyl-a -methyl-a -benzyl-, N-dimethyl-a  : b -dimethyl-, N-diethyl-a  : b  - dimethyl-, N-diethyl-a  : a  : b -trimethyl-, N 8 dimethyl - a  - phenyl - b  - methyl -, and N-dimethyl - a  - methyl - b  - phenyl derivatives of b -aminoethanol, and, according to the Provisional Specification, b  - N - methyl - N - ethyl-aminoethano and the N-diisobutyl-a  : b -dimethyl - N - diisopropyl : a  : a  - dimethyl derivatives of b -aminoethanol. Reaction is effected either at room temperature or by gentle heating in a solvent inert towards the reactants and the product. The free esters are liberated from the hydrohalides by treatment with aqueous alkali.  In examples: (1) 3 : 5-di-iodo-4-methoxy benzoyl chloride in benzene is added to a benzene solution of b -diethyl-aminoethanol and the mixture is gently warmed for 15 minutes to precipitate the hydrochloride of the b -diethylaminoethyl ester of 3 : 5-di-iodo-4-methoxybenzoate; (2) 3 : 4-di-iodobenzoyl chloride is similarly reacted with b -diethyl-aminoethanol to obtain b -diethylamino-ethyl-3 : 4-di-iodobenzoate hydrochloride.  Specification 517,382 is referred to.
Patent GB-1193934-A (GB)
Title: Method and apparatus for Treating a Length of Material
Inventor: CUCKSON KENNETH
IPC: D06B3/06
Filed: 1968-05-01
Abstract: 1,193,934. Heat treatment apparatus. ROLLS-ROYCE Ltd. May 1, 1968, No. 20596/68. Heading C7N. [Also in Division F4] Apparatus for oxidizing a continuous strand 10 of carboniferous fibres e.g. poly acrylonitrile fibres, comprises an oven 30, rollers 31, 32 mounted therein and having spaced grooves engaged by the fibres wound round said rolls in zig-zag fashion, rollers 22, 23 feeding the strand to the furnace and take-up bobbin 46. A driven shaft 35 carrying roller 32 rotates the bobbin 46 through a clutch 47 and rotates shaft 33 carrying roller 31 through a chain 40, shaft 27 and chain 38. Shaft 27 drives feed rollers 22, 23 and shaft 33 drives a cam 49 whereby a guide device 45 is oscillated to wind the strand over the full width of the bobbin 46. The strand passes through a water tank 17 on its way to the oven which is supplied with hot air at about 200‹ C. If the strand breaks, a roller 24 on a pivoted arm 25 strikes an electrical contact 26 to stop the drive.
Patent GB-1105954-A (GB)
Title: Roof convergence measuring device
Inventor: SMITH DONALD SYDNEY GEORGE
IPC: G01B7/14
Filed: 1964-05-19
Abstract: 1,105,954. Measuring linear dimensions electrically. COAL INDUSTRY (PATENTS) Ltd. May 14, 1965 [May 19, 1964], No.20618/64. Headings G1M and G1N. An apparatus for providing an indication of the distance, or change in distance, between a seam roof and floor (e.g. in coal mining) comprises two telescopically engaged tubes 2, 4 extendible relative to one another by a compression spring 6 which urges tube 4 against the roof R, the lower tube being fixed to a base 1 on the floor F and attached to the top of the tube 4 is one end of a strip spring 16 the other end of which is fixed to a rotatable drum 9, and the spring 16 is such that it always tends to roll itself into a coil, whereby it rotates the drum 9, as the tubes 2, 4 are moved relative to one another, by an amount corresponding to the relative linear displacement between the tubes. The drum 9 is coupled to a shaft 10 of a potentiometer 13 connected by a cable 14 to an electrical indicating circuit or instrument (not shown). The indicator may be adjusted to indicate the actual separation or the changes in separation between the roof and floor surfaces.
Patent GB-136260-A (GB)
Title: Improvements in Trolley Heads for Electric Traction.
Inventor: PARKER JAMES BOOTHROYD
IPC: B60L5/06
Filed: 1918-12-11
Abstract: 136,260. Parker, J. B., and Smith, J. Dec. 11, 1918. Trolly pulleys; shoe collectors.-A trolly head for electric traction is provided with a sliding con. tact block d having two or more surfaces each of which can be used for oontacting with the overhead conductor. The block is formed with flat sides against which are mounted disks or flanges e free to rotate. As shown, the block d is formed with bosses d' on which the flanges axe mounted, and the block is free to rock to a small extent determined by a T-headed bolt g. When the contact surface is worn, the bolt g is withdrawn or the head dismantled and the block turned to bring another surface into use. When all the surfaces are worn, they may be machined to a standard size and a renewable wearing strip secured thereto. Holes or slots may be made in the contact surfaces, in which graphite, asbestos, &c. is inserted to reduce the friction on the conductor.
Patent GB-1262620-A (GB)
Title: The antibiotic enhygrofungin and its manufacture
IPC: C07G11/00
Filed: 1970-04-29
Abstract: 1,262,620. Preparations comprising enhygrofungin. UPJOHN CO. 29 April, 1970 [13 June, 1969], No. 20636/70. Heading A5E. [Also in Division C2] Antifungal and antibacterial preparations comprise the antibiotic enhygrofungin or a salt thereof and are used in shoe uppers, fish and fish crate odour prevention, prevention of infection in silkworm breeding places, treatment of pigeon roosts and in swabbing laboratory benches and equipment in a mycological laboratory.
Patent GB-595002-A (GB)
Title: Improvement in radio-position determining systems
IPC: G01S1/30
Filed: 1944-10-24
Abstract: 595,002. Radiolocation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 24, 1944, No. 20674. Convention date, Jan. 6, 1943. [Class 40 (v)] In a system in which a moving body x, Fig. 1, determines in known manner the differences of its distances, e.g. R1-R3 and R2-R3 from fixed stations 1, 2, 3 transmitting pulse or frequency modulated signals, the position of the moving body relative to the fixed stations is graphically determined by combining with potentials representative of the distancedifferences R1-R3 and R2-R3 a third variable potential which is adjusted until it corresponds with R3, the two combinations and the third potential then representing respectively R1, R2 and R3. An indication of when this occurs is given by means of a three-gun cathode-ray tube 9, Fig. 2, the beams of which are adjusted by manually-controlled bias means so as to centre on points 1, 2, 3, Fig. 4, representing the map positions of the fixed stations. Oscillations from a generator 29 are fed in quadrature to the pairs of deflecting plates of the three beams to cause them to trace out circles 51, 53, 55 around the centres 1, 2, 3 respectively. The radii of the circles are determined by variable-gain amplifiers 31, 33, 35, fed respectively with the additional variable potential generated by a saw-tooth oscillator 37 and with the two potentials representative of R1-R3 and R2-R3, two deflecting plates 11 of one beam being fed from amplifier 31, and the plates 13, 15 of the other two beams from amplifiers 31 and 33, 31 and 35 through adding networks 43, 45 respectively. When the potential from oscillator 37 corresponds to the distance R3, the radii of the circles correspond to R1, R2 and R3 and the circles thus intersect at a common point which represents the map position of the moving body x. Amplitude control 30 provides for adjustment according to the map scale used. A limiter 39 may cut off the peaks of the saw-tooth wave so that the circles will remain of particular radii for sufficiently long to produce a brighter trace and the frequency of oscillator 37 may then be made so high that only these circles are visible and the operator need only adjust the limiter until they meet at a common point. The sawtooth oscillator 37 may be replaced by a manual control. Specification 471,731 is referred to.
Patent GB-207070-A (GB)
Abstract: 207,070. Jackson, W. J. Mellersh-, (Felt & Tarrant Manufacturing Co.). Jan. 2, 1923. Adding apparatus; error keys; zeroizing- mechanism. - Key-set-and-operated machines, particularly those of the comptometer class, are provided with means for locking the zeroizing-mechanism when a key has been incompletely depressed, whereby zeroizing cannot be performed until the error has been corrected and the lock released. The invention is described as applied to a machine having means for locking the actuating segments when a key has been incompletely depressed, as described in Specifications 1622/10, 26772/ 12, and 16036/13, and having zeroizing-mechanism of the kind set forth in Specification 154,603. Specifications 13094/04, and 148,292 also are referred to. The bar 107, Fig. 1, carried by a rock-bar 105 and adapted under the action of a special key 81 to release latches 108, which have been engaged with hooks 109 on the actuating-segments as the result of incomplete depression of a key, is extended laterally to engage the fork 112, Fig. 2, of a lever 115. This lever is connected through a link 116 to a bell crank 118 carrying a full-stroke pawl 121 for rack teeth 122 on the lever 72 of the zeroizing-handle 71, so that concurrently with the locking of the keyboard the pawl is moved to block the path of the rack 72, and is moved back to its normal position for full-stroke sliding engagement with the rack when the keyboard lock is released by the depression of the key 81.
Patent GB-952904-A (GB)
Title: Improvements in or relating to amplifiers
IPC: H03G1/00
Filed: 1961-06-08
Abstract: 952,904. Gain control. TELEFUNKEN PATENTVERWERTUNGS-G.m.b.H. June 8, 1961 [June 9, 1960], No. 20746/61. Headings H3Q, H3T and H4R. In a transistor amplifier the gain is controlled by means of a further transistor 13, Fig. 1, the collector-emitter path of which shunts the base bias resistor 5 of the amplifying transistor 6. The gain controlling voltage is applied to the base of the further transistor 13, the collectoremitter path impedance of which is reduced by means of collector to base negative feed-back over resistor 14, which may be adjustable, and blocking capacitor 15. The arrangement is such that as the current through the further transistor 13 is varied it both varies gain by variation of the base bias on the amplifying transistor 6 and by forming a variable impedance A.C. shunt upon the input, controlling the signal applied to the base of amplifying transistor 6. To enable the gain to be reduced to zero, there is included in series with the emitter bias resistor 9 of the amplifying transistor 6 a biasing source 16. In an alternative embodiment the further transistor 13, Fig. 2, is used to vary the emitter bias of and also the negative feed-back around, the amplifying transistor 6. To this end its collector-emitter path is included in the emitter circuit of the amplifying transistor 6 in series with bias resistor 9. Negative feed-back is again applied to the further transistor 13 by means of adjustable resistor 14 and D.C, blocking capacitor 15. Resistor 19 permits collector current to flow in the further transistor 13 even when the amplifying transistor 6 is biased to cut-off. It is stated in the Specification that the invention may also be applied to circuits employing thermionic valves.
Patent GB-1465961-A (GB)
Title: Method of manufacturing capsules containing gaseous radio isotopes
IPC: A61K51/12
Filed: 1974-05-10
Abstract: 1465961 Mixing gases GENERAL ELECTRIC CO 10 May 1974 [15 Aug 1973] 20855/ 74 Heading B1C [Also in Division F4] Mixing of a gaseous radioisotope released by crushing a glass ampoule in a chamber 14 with a gaseous diluent from container 33 prior to supplying the mixture to apparatus for manufacturing gas capsules (see Div. F4), comprises the following steps: a) Evacuating lines 12, 21 by pump 30 with valves 15, 19, 22, 28 open; b) closing valves 15, 19, 22, 28 and then crushing the ampoule in chamber 14 to release the radioisotope; c) opening valves 32, 22 to admit diluent from container 33 as far as closed valve 19, such supply being terminated when a desired pressure measured by gauge 20 is reached; d) opening and closing valve 19 to admit diluent to chamber 14 before opening valve 15 and screwing down piston 17 to expel the radioisotope and diluent to mixing container 11, the valve 15 being then closed; e) repeating step (d) until the required amount of diluent is present in the mixing zone between container 11 and valve 19; and f) opening valve 15 whilst valve 19 is closed and reciprocating piston 13 to cause mixing of the radioisotope and diluent by scouring the mixture back and forth between chamber 14 and vessel 11. Instead of crushing an ampoule, the radioisotope may be supplied to chamber 14 from a storage container (Fig. 2, not shown).
Patent GB-503000-A (GB)
Title: Improvements in or relating to means for controlling the fuel supply to internal combustion engines using pulverized fuel
IPC: F02M21/12
Filed: 1938-07-15
Abstract: 503,000. Pulverulent - fuel engines. HANNOVERSCHE MASCHINENBAU AKT. GES. VORM. G. EGESTOFF (HANOMAG). July 15, 1938, No. 21035. Convention date, Sept. 10, 1937. [Class 7 (ii)] In an engine controlled by a governor R driven from the engine shaft S and actuating a throttle valve L in a carburetter A, variations in the air-flow to the carburetter A from an inlet E, due to changes in the quantity of fuel supplied to the carburetter by aworm B, actuate a diaphragm V exposed through a pipe 9 on one side to the air pressure in front of a filter F in the air inlet E and on the other, through a pipe 10, to the pressure behind the filter, and the diaphragm alters the effective diameter of a fan Y coupled to a pinion 6 in a differential housing 4 rotated by the engine shaft S ; the housing includes driving pinions 5, 8 meshing with the pinion 6, and also with a driven pinion 7 coupled to the worm B, the speed of which is thus varied with the condition of the fuel in the carburetter A. The fan may be replaced by a pronged disc dipping into liquid the level of which is varied according to the pressures adjacent the filter F.
Patent GB-1283643-A (GB)
Title: Oxadiazine-4-thiones and vulcanizable rubber compositions containing same
Inventor: FIKE ELMER AUSTIN
IPC: C08J3/24
Filed: 1970-05-01
Abstract: 1283643 Vulcanizing rubber E A FIKE 1 May 1970 21129/70 Heading C3E [Also in Division C2] Vulcanizable compositions comprise a rubber and an oxadiazine of the formula in which each R is hydrogen or a C 1-8  hydrocarbon radical. Vulcanization is effected by heating, preferably at 100-200‹ C. The vulcanization of a homopolymer of 2-chlorobutadiene-1,3 is described.
Patent GB-276003-A (GB)
Title: Improvements in or relating to electrical transformers particularly those for use in wireless telegraphy and telephony
IPC: H01F21/10
Filed: 1927-08-11
Abstract: 276,003. Viel, E. A. O., and Amiot, J. Aug. 11, 1926, [Convention date]. Drawings to Specification. Regulating transformers.-Relates to methods of varying simultaneously the inductance of the primary and secondary windings of high-frequency transformers by means of movable conducting screens, and consists in making the screens of non-homogenous material, e.g., copper partially coated with tin or zinc, in order that the damping may be caused to vary according to a predetermined law.
Patent GB-224316-A (GB)
Title: An instrument for obtaining the density of water at any temperature
IPC: G01N9/12
Filed: 1923-08-22
Abstract: 224,316. Corner, W. R., and Blatchford, R. W. Aug. 22, 1923. Hydrometers.-The instrument is for measuring the specific gravity of water and is of the kind in which the readings are automatically compensated for temperature variations. The hollow cylindrical body A of the hydrometer is formed at its lower end with a sphere B containing mercury &c., and is surmounted at its upper end by a thermometer-like member C containing coloured water. The dimensions are such that any variation in the immersion of the hydrometer, due solely to temperature changes, is exactly compensated by the movement of the water in the stem C, due to the same cause. The desired specific gravity is thus obtained from the difference between the levels inside and outside the stem C,
Patent GB-315276-A (GB)
Title: Manufacture of dyestuffs
IPC: C09B3/32
Filed: 1929-07-10
Abstract: 315,276. Soc. of Chemical Industry in Basle. July 10, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Monohaloyenated isodibenzanthrones are prepared by treating isodibenzanthrone with halogens or halogenating agents in such a manner that only one halogen atom enters the molecule. In an example, isodibenzanthrone in nitrobenzene is heated with chlorine or sulphuryl chloride to give a monochlorisodibenzanthrone which dyes cotton in violet-blue shades.