baber/WOPTO huggingface dataset:
Patent GB-1419681-A (GB)
Title: Aminoalkyl-dibenzocycloheptene derivatives
IPC: C07C209/68
Filed: 1973-02-05
Abstract: 1419681 Aminoalkyl dibenzocycloheptene derivatives SANDOZ Ltd 5 Feb 1973 [7 Feb 1972 20 Nov 1972] 5529/73 Heading C2C [Also in Division C3] Novel compounds of the Formula (I) where R 1  is hydrogen, C 1-3  alkyl or alkoxy or fluorine, R 2  is hydrogen, C 1-3  alkyl or alkoxy, fluorine or trifluoromethyl, and R 3  and R 4  independently denote C 1-3  alkyl; are obtained by (a) dehydrating a compound of Formula II (b) treating with NaH, in the presence of an inert solvent, a compound of Formula (III) (c) treating with Li, in the presence of liquid ammonia and in the absence of oxygen, a compound of Formula (IV) (d) treating with triphenylphosphine, a compound of Formula (V) (e) treating with methyltriphenylphosphonium bromide and NaH, in the presence of dimethyl sulphoxide, a compound of Formula (VI) Intermediates of Formula II are obtained by reacting compounds of Formula VI with CH 3 M in which M is Li, -MgCl, -MgBr or -MgI in an inert solvent followed by hydrolysis. Intermediates IV are obtained by reacting a compound of Formula IX with a C 1-4  alkyl lithium compound in liquid NH 3  followed by reaction with benzoyl chloride. Intermediates VI are obtained as in Specification 1,419,682. Intermediates V are obtained by treating VI with trimethyloxosulphonium chloride, bromide or iodide in admixture with sodium hydride and dimethyl sulphoxide. Also described is the reaction of o-methyl-N-methyl benzamide with n-butyl-lithium to form a dilithio salt which is reacted with 3-dimethylaminopropiophenone to form 2-(p-[2-dimethylaminoethyl] - # - hydroxyphenethyl] - N- methylbenzamide, which is further cyclized by heating in o-dichlorobenzene under N 2  to yield 3 - [2 - dimethylaminoethyl] - 3,4, - dihydro - 3- phenyl-isocoumarin. Pharmaceutical compositions having antidepressant activity comprise a compound of Formula I or an addition salt thereof, in association with a pharmaceutically acceptable carrier or diluent, e.g. in capsule form.
Patent GB-1305601-A (GB)
IPC: C06B31/32
Filed: 1970-02-05
Abstract: 1305601 Explosive compositions SOC E J BARBIER 5 Feb 1970 [6 Feb 1969] 5658/70 Heading C1D An explosive composition comprises a mixture of an explosive sensitizing agent with ammonium nitrate of surface area greater than 700 cm.<SP>2</SP>/g. Alternatively the sensitizing agent may be aluminium in the absence of a solid combustible organic fuel. The explosive sensitizing agent may be nitroglycerine, nitroglycol, TNT, PETN, hexogen, or nitrostarch. Other additives referred to are glycol, glycerine, a hydrocarbon, mono- and di-nitrotoluene, cellulose, naphthalene, calcium silicate, ferrosilicon, ferrophosphorus, sodium nitrate, sodium chloride, sodium bicarbonate, alkali metal tartrate or oxalate, barium sulphate, manganese dioxide, sodium carboxymethyl cellulose, kieselguhr, guar gum, and bichromate. To form a slurry explosive, up to 20% by weight of water may be added. The high surface area ammonium nitrate may be obtained by crystallization in the presence of surface active agents.
Patent GB-723339-A (GB)
Title: Improvements in or relating to centrifugal oil cleaners
Inventor: LEE GEORGE HERBERT
IPC: B04B5/00
Filed: 1952-03-04
Abstract: 723,339. Bearings. GLACIER METAL CO., Ltd. Dec. 15, 1952 [March 4, 1952]. No. 5698/52. Class 12 (1) [Also in Group II] The rotary drum 1 of an oil cleaner rotates between bearings 4, S co-operating with projections on the drum. The upper bearing 5 is adjustably loaded by a spring 6. The pressure of the spring and the areas of the bearings are so arranged that oil will leak from the drum to lubricate both bearings. Specification 668,766, [Group II], is referred to.
Patent GB-624674-A (GB)
Title: Improvements in and relating to thermionic valve amplifiers
IPC: H03F3/40
Filed: 1947-02-27
Abstract: 624,674. Valve amplifying circuits. YARBOROUGH, E. H. COOKE-, and BRADWELL, J. A. Feb. 27, 1947, No. 5699. [Class 40 (vi)] In a D.C. amplifier, an A.C. potential applied to an electrode of a valve allows current to flow to charge a capacitor, the D.C. input reducing the charge so that the A.C. output is proportional to the D.C. input. The A.C. and D.C. potentials are applied between terminals 4, 5 and 1, 5 respectively, the capacitor 3 charging until the valve current is reduced to the leakage across the capacitor. When the D.C. increases in a negative sense, pulses of current flow through the valve 2. Since the fundamental frequency has a component due to the anode-cathode capacity, this is rejected by filter 8 which passes one or more of the harmonics. The load resistor 6 may be replaced by a circuit tuned to a harmonic. After A.C. amplification, the signal is rectified to give a D.C. output. The A.C. potential may be applied at the control grid, and the gridcathode capacity may act as the capacitor. The D.C. signal may be applied to the anode of a valve, the A.C. being applied to the cathode or one of the control electrodes.
Patent GB-699307-A (GB)
Title: Light-sensitive material and process of its preparation
IPC: G03C1/725
Filed: 1951-03-09
Abstract: 699,307. Light-sensitive materials; chemical toning. TYPON AKT.-GES. FUR PHOTOGRAPHISCHE INDUSTRIE. March 9, 1951 [March 11, 1950], No. 5807/51. Class 98 (ii). A photographic material sensitive to visible light of high intensity and short duration comprises a fibrous base having uniformly dispersed therein as the light-sensitive material a detonable endothermic nitrogen-containing impact-detonable compound in such a finelydivided form that it can be handled safely without detonation. In an example, filter paper hardened by soaking in nitric acid was soaked in a solution of iodine and potassium iodide, freed from adhering liquid, placed in a saturated solution of ammonia until it had acquired a deep brown colour, and then dried in the presence of ammonia over calcium oxide and ammonium chloride. On flashlight exposure a direct positive is produced. The nitrogen iodide image may be converted to' silver by bathing in alcohol followed by a solution of silver nitrate, washing, and bathing in sodium sulphite until the nitrogen iodide has been converted to silver iodide and after rinsing the paper is immersed in sodium stannite to reduce the image to metallic silver. In further alternatives a fibrous carrier such as hardened filter paper, asbestos paper, woven or felted textiles, may be sensitized with silver azide or fulminate by first impregnating the material with a solution of silver nitrate and, after removing excess liquid, bathing with a water-soluble, e.g. alkali metal azide or fulminate, followed by washing or draining and drying over potassium hydroxide, magnesium chlorate, calcium chloride, calcium oxide or phosphorus pentoxide.
Patent GB-212574-A (GB)
Title: Improved method of and means for utilising gravity
IPC: F03G7/10
Filed: 1924-03-06
Abstract: 212,574. Klein, A. March 7, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Self-driving machines.-One end of a centrallypivoted frame 2, 4 is provided with a circular track round which is continually driven a ball &c. Q, the other end of the frame carrying a load P, of less weight than the ball Q. Stops such as 3, 5 determine the limiting positions of the frame.
Patent GB-488177-A (GB)
Title: Improvements in or relating to electric multi-channel carrier signalling systems
IPC: H04J1/04
Filed: 1938-02-24
Abstract: 488,177. Multiplex transmission. SIEMENS & HALSKE AKT.-GES. Feb. 24, 1938, No. 5894. Convention date, March 6, 1937. [Class 40 (iv)] In a multi-channel cable system comprising a small number of two-way channels of comparatively low frequency and a number of one-way channels of higher frequency, the channels for the two directions forming two separated bands, as indicated in Fig. 1, the channels in the upper band are separated from the remainder at a point between the cable K and the hybrid coil A by means of low-pass and high-pass filters X, Y. The channels in the lower band, on the other hand, pass through the hybrid coil A and are separated by a filter Gel, the apparatus associated with these channels being preferably balanced by a network S. The two-way channels are connected to subscribers' lines La, Lb over four-wire circuits in the usual manner. In prior arrangements, both sets of one-way channels are separated out between the cable and the hybrid coil or both sets pass through the hybrid coil.
Patent GB-524855-A (GB)
Title: Improvements in or relating to change-speed gear
IPC: F16H9/04
Filed: 1939-02-22
Abstract: 524,855. Change-speed gearing. GRIST, G. Feb. 22, 1939, No. 5931. [Class 80 (ii)] In a change-speed gear, shafts 28 carrying clutch members 26 are rotated by sprockets 66 engaging a driving chain. Associated clutch members 20, 22, 24 rotate sprockets 60, 62, 64 engaging a driven chain. The clutches are engaged by springs when released selectively by a sliding bar 40. By wrapping the chain inside and outside the sprockets 60, 62, 64 two forward and one reverse speed may be obtained. The sprockets may be directly geared.
Patent GB-255766-A (GB)
Title: Improvements in the manufacture and production of ammonium phosphates
IPC: C01B25/40
Filed: 1926-03-03
Abstract: 255,766. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). March 3, 1926. Ammonium phosphates.-Mono, di- and triammonium phosphates are obtained by absorption of phosphoric anhydride from gases containing it by means of an aqueous solution of an ammonium phosphate. When making the di- and triammonium phosphates, preferably the solution used for absorption should not contain more than 1.5 mols. of ammonia for each molecule of phosphoric acid, the necessary ammonia being added after the absorption has been completed. The phosphoric anhydride is completely absorbed and ammonia either as gas or in solution is continuously added until a hot concentrated solution of ammonium phosphate is produced. The ammonia may be mixed with the gas containing phosphoric anhydride before absorption. The hot solution may be filtered free from iron and aluminium compounds before it is cooled to separatethe ammonium phosphate as crystals.
Patent GB-1074092-A (GB)
Title: Improved guide for doors, shutters or like closure members
Inventor: DALLEY LEONARD CHARLES
IPC: E06B3/46
Filed: 1963-02-14
Abstract: 1,074,092. Doors &c. guides. DEANS & LIGHT ALLOYS Ltd. Feb. 11, 1964 [Feb. 14, 1963], No. 6028/63. Heading E1J. A guide which prevents rattle, for door, shutter and the like closure members comprises two rollers 22 mounted on a carrier 18 rotatably mounted on a plate 10 securable to a door &c. 12, the rollers being disposed one on each side of a bar guide 26 and the carrier 18 being biased by a torsion spring 30 to cause the rollers to contact the guide 26.
Patent GB-724958-A (GB)
Title: An improved drawing pin
IPC: B43M15/00
Filed: 1953-03-05
Abstract: 724,958. Drawing pins. LAWRENCE, H. A. J. March 5, 1953, No. 6094/53. Class 89 (2). A drawing pin comprises a pin member 2 fixed to the central portion 1 of a cupshaped head, the peripheral wall 3 of which has a raised flange 4 for gripping between thumb and finger to remove the pin. The portion 1 is outwardly convex and the edge of flange 4 may be knurled. The junction of wall 3 and portion 1 may be sharp to grip paper &c. secured by the pin. In another arrangement, the head is square or rectangular having an arched central portion, opposite ends of which are provided with flanges.
Patent GB-667887-A (GB)
Title: Improvements in and relating to foot arch supports for boots and shoes
IPC: A43B7/14
Filed: 1950-03-10
Abstract: 667,887. Boots &c. LIPMAN, J. F. March 10, 1950, No. 6102/50. Class 17 (ii). A foot-arch support 5 of spring steel or similar material comprises an arched wing portion 6 of pointed elliptical shape connected by a bridge 7 to an arched shank portion 8. The support is secured to a counter stiffener 1, having a forward extension 2 on its inner side, by rivets 4 and to an insole by rivets passing through holes 12. The wing portion extends forward sufficiently to support the joint of the big toe. Specification 374,776 is referred to.
Patent GB-1037073-A (GB)
Title: Improvements in magnetic drum stores
IPC: G11B5/40
Filed: 1963-02-14
Abstract: 1,037,073. Supporting magnetic drums. SPERRY RAND CORPORATION. Feb. 14, 1963 [Feb. 16, 1962], No. 6110/63. Heading G5R. The drum 10 is supported in a housing 12 in the form of an open cage, four flaps 13 being hinged on at 14 to carriers 15 including at least one read/write head 16. The surfaces 15, 16 are so contoured as to maintain them in air-bearing relationship with the drum 10 when the assembly is running, there being sufficient freedom in the hinge-links to enable the assembly to set in a stable position. At rest, spring 31 normally holds the drum 10 out of position but a solenoid (Fig. 2, not shown) can be energized to overcome the spring pressure if the assistance due to the air-bearing forces is sufficiently great to set up the drum in the stable position. The solenoid may be arranged to operate only if: (a) the drum rotates in the correct direction; (b) a test circuit requires to respond to rotation of the drum at a sufficient speed. Any other circumstances retract the drum.
Patent GB-725172-A (GB)
Title: New phenthiazine derivatives and a process for their preparation
Filed: 1953-03-05
Abstract: The invention comprises compounds of the formula <FORM:0725172/IV (b)/1> and salts thereof, wherein R represents a methyl or ethyl group, A represents a divalent straight or branched aliphatic chain containing 2 or 3 carbon atoms, e.g. a -(CH2)3-group, and the phenoxy group is attached to one of the positions 1 and 3 of the phenthiazine nucleus.  The compounds are prepared by condensing 1- or 3-phenoxy-phenthiazines with a tertiary aminoalkyl halide of the type X-A1-N(R)2 or an acid addition salt thereof, wherein A1 represents a divalent or branched aliphatic chain containing 2 or 3 carbon atoms, e.g. a -(CH2)3- group, which may be the same as A1 or, in the case of a branched chain, an isomeric form thereof, and X represents a halogen atom.  Specified halides are 3-diethylamino-1-chloropropane and 3-methylamino-1-chloropropane. The reaction is preferably conducted in presence of an acid binding agent, examples of which are sodamide, metallic sodium, powdered sodium and potassium hydroxides, lithium hydride, sodium tertiary butylate, butyl lithium and phenyl lithium, and is preferably carried out in an organic non-ionic diluent, e.g. benzene, toluene or xylene, which is heated nearly to boiling.  A solution of the free tertiary aminoalkyl halide base is best added to a heated mixture of phenthiazine compound, acid-binding agent and solvent.  Alternatively, the solution of tertiary aminoalkyl halide is introduced gradually into molten phenthiazine compound. The examples describe the preparation of both 10-(31-dimethylaminopropyl) - phenoxyphenthiazines and one 10 - (31 - diethylaminopropyl) - phenoxyphenthiazine. Salts with maleic, oxalic and hydrochloric acid are also described.  1 and 3-Phenoxyphenthiazine compounds employed as starting materials are prepared by the cyclization of meta-phenoxydiphenylamine with sulphur in presence of iodine as catalyst followed by fractional crystallization from a mixture of benzene and cyclohexane.
Patent GB-929424-A (GB)
Title: Improvements in tension control apparatus
IPC: B65H23/198
Filed: 1962-02-19
Abstract: 929,424. Automatic tension control. HEENAN & FROUDE Ltd. Feb. 19, 1962 [March 14, 1961], No. 6255/62. Class 38 (4). An induction motor M1 drives a reel R through an eddy-current coupling whose field winding 8 is excited to regulate the tension in web 12 driven by rolls 14. The angular velocity of the reel decreases in relation to web speed as the diameter of the coil increases, the torque transmitted to the reel being increased at the same time. A desired torque is established by reference voltage circuit RV associated with thyratron 22 in circuit with the winding 8, a potentiometer 32 being adjusted automatically in accordance with the coil diameter by means of two-phase motor M. The circuit RV also comprises a bias potentiometer 46, tension potentiometer 52, and potentiometer 60 which is adjusted in accordance with the build-up ratio of the coil. A circuit TC for detecting the actual torque comprises current transformer 72 associated with step-up transformer 80. The portion of the in-phase voltage component which represents electro-mechanical losses in the motor and coupling is vectorally cancelled by adjusting potentiometer 88. The out-ofphase voltage component of the signal obtained by the current transformer 72 is vectorally cancelled by adjusting potentiometer 104. A potentiometer 70 is adjusted to increase the maximum available torque when the coil diameter reaches its maximum value. A diametersensing circuit DS is associated with the motor M and comprises tachometer generators G1, G2, coupled to shaft 10 and rolls 14 respectively, and having their outputs in opposition. At the start of a winding operation, the output voltages of generators G1, G2 are equal, the initial magnitudes being set by potentiometer 152. Thyratron 184 is out off by adjusting potentiometer 214 in bias voltage circuit BC, the motor M being de-energized. As winding proceeds, the output of generator G1 decreases, thyratron 184 conducts, and motor windings 174, 176 are energized. Movement of motor M re-positions potentiometer 168 to select a larger portion of the signal from generator G1 which is sufficient to equal that from generator G2. The motor M then stops, this operation being repeated to reposition potentiometer 168 in direct proportion to the coil diameter. By pre-setting potentiometer 60 in the reference voltage circuit RV, the torque may be made to increase linearly with coil diameter at different rates to maintain constant web tension or to allow the tension to decrease as the diameter increases. Information relating to the coil diameter in a temporarily stopped position is retained by the potentiometers 32, 168. The circuit may be modified to control the tension during an unwinding operation. An indicating circuit IC is supplied with the torque-responsive signal and comprises a current-sensitive meter T as well as potentiometer 242 which is adjusted in accordance with coil diameter. The resultant current through the meter is proportional to the web tension.
Patent GB-685501-A (GB)
Title: Improvements in and relating to instant coffee making machines
IPC: A47J31/30
Filed: 1951-03-15
Abstract: 685,501. Coffee urns. CONDOR DITTA VED. OBERTINO & FIGLIA. March 15, 1951 [March 15, 1950], No. 6270/51. Class 129. The hot water for a coffee machine is obtained from a constant pressure source and is passed through a heating coil immersed in boiling water. The water, from the town main or pump passes through a heated chamber 10 where the lime content is deposited and thence through a coil 13 to the coffee filter 8. The coil is immersed in boiling water in the outer vessel 1. Steam from this vessel may alternatively be passed to the filter 8 by the valve 16.
Patent GB-1064352-A (GB)
Title: Improvements in or relating to cartons
IPC: B65D6/00
Filed: 1965-02-12
Abstract: 1,064,352. Cartons. DYNAMIT NOBEL A.G. Feb. 12, 1965 [Feb. 14, 1964], No. 6295/65. Heading B8P. A carton comprises a container 1 with open top 3 and an aperture 6 in one side which is closed by a lid 2 having a transparent side.
Patent GB-1379923-A (GB)
Title: Separation of particles
IPC: B07C5/342
Filed: 1972-02-10
Abstract: 1379923 Uses of luminescence and thermoluminescence DE BEERS CONSOLIDATED MINES Ltd 10 Feb 1972 [12 Feb 1971] 6295/72 Heading C4S [Also in Division G1] Particles, e.g. diamonds, are separated from gangue after having been identified by their property of thermoluminescing after irradiation by electromagnetic radiation and subsequent heating. In the method described, the ore mixture is subjected to γ-rays, e.g. from a Co<SP>60</SP> source, which causes luminescence. After irradiation, and subsiding of the luminescence, the mixture is heated, when the diamonds only will thermoluminesce and can be sorted out. If more than one type are present, their thermoluminescence may be analysed spectroscopically and they may be divided according to the method of Application 6296/72. The thermoluminescent light emitted also differs from other luminescent materials present such as zircon.
Patent GB-739838-A (GB)
Title: Improvements in ball or roller bearings
IPC: F16D23/14
Filed: 1954-03-04
Abstract: 739,838. Ball and roller bearings. DAIMLERBENZ AKT.-GES. March 4, 1954 [March 4, 1953], No. 6369/54. Class 12 (1). In a ball bearing comprising an inner race 2a on a sleeve 2, an outer race 7 and a row of balls 3, a lubricant block 6 is disposed substantially concentric with the bearing axis and is adapted to contact the row of balls 3. The ring 7 and block 6 are enclosed in a casing 8. In a modification, a frusto-conical end flange 8a of the casing causes the block 6 to maintain contact with the balls 3 on the upper side. Alternatively a conical surface 8b is provided on the casing as shown in Fig. 4. In another modification the block 6 is pressed axially into engagement with the balls 3 by a spring 9, Fig. 3. The balls 3 may be replaced by rollers. The invention is particularly applied to a clutch throw-out bearing.
Patent GB-765540-A (GB)
Title: Improvements in or relating to grinders for coffee, spice and the like
Inventor: DITTING ADOLF
IPC: A47J42/18
Filed: 1955-03-03
Abstract: 765,540. Coffee &c. grinders. DITTING, A. March 3, 1955, No. 6384/55. Class 59 A grinder for coffee, spice and and the like comprises a stationary grinding disc 22 and a grinding disc 4 mounted on a rotatable shaft 3 which is axially displaceable in conjunction with a non-rotatable bush 7 having a screwthreaded portion 7a engaged by a spring-influenced ring nut 9 formed with gear teeth 10, the gear teeth being engaged by a gear wheel 16 mounted on a spring-influenced shaft 17 which is rotatable by a knob 18 to adjust the distance between the grinding discs, the shaft 17 being retracted and rotated when it is desired to alter the tooth engagement between the gears 9, 16. The shaft 17 is provided with a pin 17a, which after a single revolution of the shaft, engages an internal rib on the shaft housing.
Patent GB-1018613-A (GB)
Title: Improvements in or relating to hydraulic extrusion apparatus
IPC: B21C35/02
Filed: 1961-02-21
Abstract: 1,018,613. Extruding. FIELDING & PLATT Ltd., D. V. ROWLES, and R. MADELEY. May 11, 1962 [Feb. 21, 1961], No. 6384/61. Heading B3P. Means for guiding the extruded product emerging from an hydraulic extrusion press comprises two or more guide tubes 3 mounted on a rotatable turret 1 and means 8 for traversing a selected tube along the extrusion axis. Six tubes each having a bore shaped to conform with the cross section of an extruded product are mounted in the turret which is indexed by hydraulic or pneumatic cylinders 5 and locked in position by stops. A crosshead 9 with a dovetail projection 10 then engages a slot 11 in the upper tube 3 and is moved axially by two parallel hydraulic or pneumatic rams 8 to push the tube into a recess 13 in the press bolster 12. The extruded product, which may be of steel or high strength alloy, passes through the tube and on to support rollers 14, 15. Meanwhile the other tubes can be cooled by an air blast.