baber/WOPTO huggingface dataset:
Patent GB-748358-A (GB)
Title: Improvements in or relating to pyrimidines
Inventor: JACOB ROBERT MICHEL
Filed: 1953-06-04
Abstract: The invention comprises compounds of the formula <FORM:0748358/IV(a)/1> where R1 represents a hydrogen atom or a lower alkyl group and R2 represents a lower alkyl group (lower alkyl being a group containing up to 4 carbon atoms).  Such compounds are obtained by reacting 2-amino-4-chloro-5-(31 : 41 - dichlorophenyl) - 6 - ethyl pyrimidine or an N-acyl derivative thereof with the appropriate amine NHR1R2 or a salt thereof.  When a 2-acylamino compound is used deacylation may be effected simultaneously or subsequently.  Using an amine as such, reaction is preferably effected at 120 DEG  to 200 DEG  C. with an excess of amine, suitably in an autoclave, but preferably the amine is added in small portions to a suspension of the pyrimidine in a diluent such as a phenol, a glycol and their lower ethers, at 120 DEG  to 150 DEG  C. Alternatively the salt of the amine is reacted with the pyrimidine at above 150 DEG  C., preferably at about 200 DEG  C.  The products may be used as free bases or salts as anti-malarial and amoebicidal compounds.  In examples: (1) 2-acetylamino-4-chloro-5-(31 : 41 - dichlorophenyl) - 6 - ethyl pyrimidine, isopropylamine and ethanol are heated in a sealed tube to give 2-amino-4-isopropylamino-5 - (31 : 41 - dichlorophenyl) - 6 - ethyl - pyrimidine; (2) and (3) 2-amino-4-dimethylamino5 - (31 : 41 - dichlorophenyl) - 6 - ethylpyrimidine is prepared by reacting 2-acetylamino-4 - chloro - 5 - (31 : 41 - dichlorophenyl) - 6-ethyl pyrimidine with (2) dimethylamine in ethylene glycol at 150 DEG  C.; and (3) dimethylamine hydrochloride at 210 DEG  C.  Specifications 718,688, 731,956 and 735,890 are referred to.
Patent GB-683947-A (GB)
Title: Circuit arrangement for controlling the frequency of a television line time base oscillator
IPC: H04N5/08
Filed: 1949-06-10
Abstract: 683,947. Phase measurement. COURT, P. R. J., and PYE, Ltd. June 12, 1950 [June 10, 1949], No. 15470/49. Class 37. [Also in Groups XXXV and XL (b)] In an automatic frequency control system for a television line time base, the complete video signal is applied to one electrode of a valve and pulses derived from the line time base are applied to another electrode of the same valve, the anode current of the valve, which flows during coincidence of the synchronizing pulses and the line time base pulses, serving to control line time base frequency. In a television receiver, Fig. 4, negative-going signal output from the video amplifier (not shown) is applied at W to the control grid of a pentode valve V1 which acts as a synchronizing separator producing frame synchronizing pulses at its screen grid X. Positive-going gating pulses of approximately the same duration as the line synchronizing pulses are derived from the line time base, restored to earth potential by diode V2, and applied at Y to the suppressor grid of valve V1 so that the mean anode potential of valve V1 is dependent on the degree of coexistence of the synchronizing and gating pulses. The anode potential of valve V1 then serves to correct deviations of line frequency by automatically controlling the cathode potential of the line-blocking oscillator. With the above arrangement the gating pulses overlap the leading edges of the synchronizing pulses but they may be arranged to overlap the trailing edges, in which case the grid potential of the blocking oscillator is controlled. Use of a reactance valve as frequency corrector is referred to.
Patent GB-846746-A (GB)
Title: Improvements in or relating to apparatus comprising glassware
Inventor: JONES FRED
IPC: B01L3/00
Filed: 1957-05-15
Abstract: In laboratory glassware or other apparatus e.g. cocks, manometers, U tubes, which comprise a glass tube containing a liquid connected at its ends by a rubber or other flexible tube, the glass tube is embedded in a hard resin which is preferably transparent.  The resin block may have metal supports embedded therein, or may have threaded holes, or projections for attaching to supports.
Patent GB-151239-A (GB)
Title: Improvements in spring suspended front axles for motor vehicles
IPC: B60G11/08
Filed: 1920-06-08
Abstract: 151,239. Oesterreichische Waffenfabriks-Ges. Sept. 13, 1919, [Convention date]. Axles.-In a motor vehicle in which the front axle is provided with a suspension spring c suspended from the pivots e of the wheel axles f by shackles d, the axle a is made from a rolled iron or steel bar, shown as of I-section, with upset ends terminating in hollow bosses b for the reception of the pivots e.
Patent GB-234307-A (GB)
Title: Improvements in the water cooling systems of internal combustion engines
IPC: F01P7/16
Filed: 1924-07-02
Abstract: 234,307. Sunbeam Motor Car Co., Ltd., Coatalen, L., and Stevens, H. C. M. July 2, 1924. Radiators, motor-car.-A thermostat controls the flow of the water through two inlets at the top of the radiator, one leading to the usual cooling-element, and the other to a bypass which may be a hollow side wall of the radiator. The flow is directed by partitions in the top and bottom tanks, and the water leaves the by-pass by the usual outlet without previously mixing with the cooled water. A thermostat casing 11 is attached to the top of the radiator, openings 13, 14 being adapted to register with the inlets to the cooling-elements and the by-pass respectively. The path of the hot water, entering at 12, is regulated by a disc-valve 16 controlled by an expansion member 15, an adjustable or interchangeable distance piece 23 being interposed.
Patent GB-667951-A (GB)
Title: Improvements in or relating to welded locomotive frames
IPC: B61F1/06
Filed: 1950-06-26
Abstract: 667,951. Locomotive frames. HENSCHEL & SOHN GES. June 26, 1950 [Sept. 9, 1949], No. 15907/50. Class 79(i) An all-welded loco motive frame has it: two main longitudina members of I-section each comprising a continuous web plate a and flanges b. The two main members may be joined by a suitably apertured horizontal plate welded to the centres of the plates a, or, as shown, they may be joined by a plate d which is welded directly to the plates a. The plates a are apertured for the axle bearings as shown in Fig. 3, the flange b being widened and continuing round the edge of the aperture. Slide surfaces e for the axle boxes are welded direct to the flange.
Patent GB-1219254-A (GB)
Title: Sydnonimine derivatives
IPC: A61K31/535
Filed: 1969-03-26
Abstract: 1,219,254. Sydnonimine derivatives. BOEHRINGER INGELHEIM G.m.b.H. 26 March, 1969 [26 March, 1968], No. 15910/69. Heading C2C Compounds of the general formula (R 1 , 2  = alkyl, cycloalkyl, aralkyl optionally substituted by CH 3  or halogen, heterocyclic ring linked via alkylene chain to N, or -NR 1 R 2  = heterocyclic ring optionally containing more than one heteroatom and/or being substituted by CH 3 ; R 3  = H, -COR 4  (R4 = alkyl, cycloalkyl, Ph, halophenyl, alkoxy, unsubstituted or substituted nitrogen-containing heterocyclic ring); Hal = halogen) and their acid addition salts are prepared by halogenating a compound of the formula or an acid addition salt thereof, optionally followed by deacylation and/or salt formation. The preparation of the starting materials by standard methods is described. The above compounds are hypotensive agents, and the salts may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-842916-A (GB)
Title: Improvements in and relating to the speed control of electric motor drives
Inventor: CLARK LEONARD JACK
IPC: F02C7/268
Filed: 1957-05-20
Abstract: 842,916. Variable-speed control. BRITISH THOMSON-HOUSTON CO. Ltd. May 6,1958 [May 20, 1957], No. 15940/57. Addition to 841,585. Class 80 (2). [Also in Groups XXVII. XXIX and XXXV] In a control system according to the parent Specification wherein a motor generator 1, acting as a motor, starts an aircraft gas turbine 3 through a variable-ratio gear 2 controlled automatically at 8 by means responsive to motor current to maintain constant speed and power of the motor 1, the motor generator 1 is of the compound wound synchronous type and the variable ratio control 8 is actuated by a solenoid 5 acting on a spring-biased armature 6 and energized by a current transformer ST in one of the three-phase leads supplying the motor 1. The motor field FW is energized through rectifiers R1, R2 fed directly and through current transformers CT respectively.
Patent GB-159572-A (GB)
Abstract: 159,572. Watson, E. A. Nov. 25, 1919. Inductor machines; magneto-electric machines. -A magneto-electric machine of the inductor type comprises a number of straight bar magnets a connected together at one end by a single polepiece b and at the other end by a magnetic member consisting of two pole-pieces c, d connected together by a cross-piece e on which the primary and secondary windings are placed. The inductor h rotating between the pole-pieces may be provided with a low-resistance winding for generating current for battery-charging and lighting. The movable contact k of the circuit. breaker is carried by a spring l, which is actuated through a rod m from a face-cam n on the rotor. The winding on the rotor is connected to segments r rotating with the rotor. Brushes bearing on the segments r conduct the current to the lighting circuit. Current may be supplied intermittently from the rotor winding to the primarywinding g to supplement the current produced in the latter.
Patent GB-680097-A (GB)
Title: Tire bead lock clip
IPC: B60C15/02
Filed: 1951-07-05
Abstract: 680,097. Pneumatic tyres. WINGFOOT CORPORATION. July 5,1951 [Aug. 18, 1950], No. 15957/51. Class 144 (ii). The beads of a deflated tyre are held in engagement with the wheel-rim by means of circumferentially spaced resilient clips 11 each comprising a base portion 16 to fit under the bead, a rolled edge 12 to engage the bead-toe, and a flange 18 adapted to seat between the bead-heel and the rimflange 8, 9 with a rolled edge 14 for snap-engagement over the edge of the rim flange. As shown, the base-portion 16 of the clip and the flange-portion 18 are provided with upturned edges 15 and tongues 17 respectively for biting-engagement with the tyre beads.
Patent GB-730751-A (GB)
Title: Improvements in floor springs for doors
IPC: E05F1/12
Filed: 1953-06-10
Abstract: 730,751. Door-operating appliances. GIBBONS, Ltd., J., and GIBBONS, P. E. March 18, 1954 [June 10, 1953], No. 15981/53. Class 65(1). A case containing a floor-spring mechanism is adjustable longitudinally in a fixed outer casing ; angular adjustment for centring the door is preferably also provided. In the form shown the inner casing a is guided beneath the pivot by a shallow projection between two longitudinal ribs on the bottom of the outer casing d, and may be secured to the outer casing at that end by screws engaging clearance slots in it. At the outer end shown, the inner casing a has a flange j near the top, with a slot u through which a screw t penetrates into a square nut slidable longitudinally in a block formed in the end of the outer casing d; a screw n with its head held captive in a recess in the block engages the nut so that rotation of the screw adjusts the casing a longitudinally. Laterally adjustable blocks i, secured by screws k, engage inclined surfaces on the flange j to centre the casing a, lateral movement of this end of the casing being permitted by the slot u.
Patent GB-1414832-A (GB)
Title: Method of preparing 6-bromo-1,2-naphthoquinone
IPC: C07C46/06
Filed: 1973-02-20
Abstract: 1414832 6-Bromo-1,2-naphthoquinone VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY KHIMIKO FARMATSEVTICHESKY INSTITUT IMENI S ORDZHONIKIDZE 20 Feb 1973 15996/75 Divided out of 1414831 Heading C2C 6-Bromo-1,2-naphthaquinone is prepared by reacting 1,6-dibromo-2-naphthol with nitric acid at 10‹-20‹ C., and thermally decomposing the product at a temperature of at least 40‹ C. in a medium of glacial acetic acid.
Patent GB-1411930-A (GB)
Title: Corrosion-resistant steel
IPC: C22C38/38
Filed: 1974-04-10
Abstract: 1411930 Steel INSTITUTE PO METALOZNANIE I TECHNOLOGIA NA METALITE 10 April 1974 [11 April 1973] 16045/74 Heading C7A Corrosion resistant steel comprises:- the balance, apart from incidental elements and impurities, being Fe. The steel may be water quenched from 1100-1150‹C (e.g. after hot rolling).
Patent GB-1039098-A (GB)
Title: Snap-action thermal switch
Inventor: DALES GEORGE FRANKLIN
IPC: H01H37/60
Filed: 1963-04-23
Abstract: 1,039,098. Thermal electric switches. FRANKLIN DALES CO. April 23, 1963, No. 16053/63. Heading H2B. [Also in Division G1] A snap-action thermal switch comprises an elongate bi-metallic element associated with a blade spring engaged with it at two points along the length of the element, the spring being so arranged that bending of the element under the influence of heat causes the spring to snap-over from being bowed in one direction to being bowed in the opposite direction. A fixed electric contact is provided for engagement with a contact on the spring when the latter is bowed in one direction. In one form, a tubular metal housing 1 is flattened at one end 12 to grip a bi-metallic strip 4 and a spring blade 5 together with an insulating sleeve 15. At this end also the blade and strip are secured together, as by soldering, while the other end 7 of the strip is upturned to engage in a hole 8 in the spring, the position of this hole being such that the spring is necessarily bowed. Normally the spring is bowed convexly upwards, as shown dotted, so that a contact member 21 engages a fixed contact 2, on the casing. Heating of the bimetallic strip, due to a change in ambient temperature, causes it to bend upwards so that the movement of the end of the spring 5 causes the latter ultimately to snap-over to the position shown in full lines and its reversed curvature causes contact 21 to be separated from contact 2. In this construction the switch may be reset after cooling by pressing downwards on an insulating tab 25 on the projecting end of the spring 5, but in other forms described a stop, which may be adjustable, may be provided on the casing to return the spring as the bimetallic strip cools or the casing may carry a push-button for resetting it.
Patent GB-312369-A (GB)
IPC: B22C15/20
Filed: 1929-05-25
Abstract: 312,369. Kurze, W. May 26, 1928, [Convention date.]. Feeding.-Machines of the slinger type for filling moulds with sand &c. have means for removing air from the front surfaces of the projector blades to prevent aeration of the sand and increase the solidity of the wads delivered. The rotor comprises a disc forming one end wall of a casing and mounted on a shaft driven from a motor through a clutch, or a gear-box or other speed controlling means. The inner wall n is in the form of an interchangeable ring. The blades f, g have convex leading faces receding towards the outer wall and formed at o to furnish air escape passages. Channels h on the outer wall have vents h<1> and a further air discharge pipe k is provided immediately in front of the sand supply orifice i. Suction devices may be provided to assist in air removal. The sand is delivered immediately beyond the supply point, the casing being cut away tangentially at p and the ring n having a flat n'.
Patent GB-307666-A (GB)
Title: Improvements in and relating to power control apparatus for use in pneumatic despatch systems
IPC: B65G51/16
Filed: 1928-06-05
Abstract: 307,666. Lamson Pneumatic Tube Co., Ltd., and Burl, H. June, 5, 1928. Pneumatic dispatch apparatus.-Power control apparatus, for use in pneumatic despatch systems of the vacuum type in which the movement of a main valve is determined by pressure variation in the transmission line, comprises a diaphragmcontrolled main valve normally partially closed to permit a minimum flow of air through the line, an auxiliary valve operated by a diaphragm controlling the admission of atmospheric air to one side of the main valve diaphragm, and a gravity valve controlling the admission of air to one side of the auxiliary valve diaphragm and operated by a pivoted float actuated by pressure in the'transmission line. The Figure shows the parts when no carrier is in the line. The pipe line 5 is fitted with a housing 6 in which a main valve 7 regulates the air passing through a port 8. The valve spindle 9 passes to a chamber 10, and is there attached to a diaphragm 11. Ports 19, 19a connect the chamber 10 with the underside of a spring-pressed diaphragm 20, mounted in a chamber 24, and attached to an auxiliary valve 21 which controls the port 19. Ports 23 maintain atmospheric pressure on the underside of the diaphragm 20. The upper part of the chamber 22 connects with the line 5 through a port 24 which is fitted with an adjustable needle valve 25. A port 26 in the upper part of the chamber 22 is controlled by a gravity valve 27 which is adapted to be raised by a pivoted float 28 extending into the line 5. In operation, the resistance of an inserted carrier increases the vacuum in the line 5, thus lifting the diaphragm 20 and the valve 21 through the port 24. Atmospheric air is admitted behind the diaphragm 11, through the ports 19, 19<a>, to force open the main valve 7 and thus create sufficient vacuum in the line 5 to propel the carrier. On discharge of the carrier, the air inrush depresses the float 28 to lift the valve 27 and admit air to the port 26. The diaphragm 20 is thus forced downwards until the valve 21 closes the port 19. The air behind the diaphragm 11 is then exhausted through a needle valve, not shown, and the diaphragm 11 is forced back by a spring 12 until the valve stem 9 meets a stop 13. The ports are then in the reset position, as shown in Fig. 1. Specifications 238,954 and 238,955 are referred to.
Patent GB-145078-A (GB)
Title: Improvements in the production of solid or hollow metallic castings of various formsby centrifugal action
IPC: B22D13/04
Filed: 1920-06-16
Abstract: 145,078. Soc. d'Etudes et de Constructions Metallurgiques. Aug. 9, 1918, [Convention date]. Casting-machines; moulds. - Tubes, wheel rims, and' other hollow or solid forms are produced by centrifugal casting in a vertical mould. To obtain plates or slabs for rolling down, the mould may be divided radially into pockets b, Fig. 3, producing separate segmental blocks. Wheel rims or other profile forms may be produced in a divided mould, Fig. 4, having circumferential grooves c to suit the articles to be produced. Tubes, formed from more than one metal, may be obtained by casting a tubular ingot from different alloys, the separating surfaces of the metals being paraboloids of revolution. The mould may be internally tapered so that the thickness of the block or ingot or the outer layer of a compound ingot may be substantially uniform. Compound castings other than tubes may be obtained by suitably partitioning the mould.
Patent GB-120044-A (GB)
Title: Improved Process of Treating Ore Concentrates, Fines, Slimes, Dust and the like.
Inventor: REECE OLIVER
IPC: C22B1/24
Filed: 1918-10-07
Abstract: 120,044. Reece, O. Sept. 18, 1917, [Convention date]. Briquetting processes. - Fine ores, concentrates, slimes, dust, &c. are prepared for smelting in a blast furnace by mixing them with binding and fluxing materials in the form of magnesite, dolomite, or free sulphur, or mixtures of these, damping with water, briquetting in moulds under pressure, and then subjecting the briquettes to the action of steam under pressure. The mixture may be allowed to stand for a time before being briquetted. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of lime, cement, gypsum, and combined sulphur as binding agents, and states that in some cases combined sulphur present in the original material may serve as the binding and fluxing agent. This subject-matter does not appear in the Specification as accepted.
Patent GB-110635-A (GB)
Title: Improvements in Mercury Breaks or Electric Interrupters.
IPC: H02M1/30
Filed: 1916-11-16
Abstract: 110,635. Butt & Co., F. R., Bigge, H. F., and Butt, F. R. Nov. 16, 1916. Mercury-jet apparatus.-In mercury interrupters, more particularly for electro-therapeutics and X-ray work, the jetor jets impinging on stationary contacts m issue from adjustable directing tubes l, which rotate with a vessel f, the interior of which is formed with two inclined surfaces h. The mercury is forced through the tubes by the pumping action of these surfaces and by centrifugal force. The jet issues forwardly in the direction of rotation.
Patent GB-1378451-A (GB)
Title: Activation of bauxite
IPC: B01J20/08
Filed: 1972-04-11
Abstract: 1378451 Activated bauxite DU PONT OF CANADA Ltd 11 April 1972 [16 April 1971] 16616/72 Heading C1A Activated bauxite containing 7 to 25% by weight of volatile matter is prepared by heating mill grade bauxite of U.S. standard sieve mesh size 18-30 at 275‹ to 325‹ C. The mill grade bauxite may be heated in a forced air circulation oven and the so formed activated bauxite may be of surface area greater than 250 square metres per gram and may be used as an absorbent for catalyst residues in the production of a polymer of ethylene.
Patent GB-708903-A (GB)
Title: Improvements in or relating to gramophone records
Inventor: LORD WILLIAM EDWARD
IPC: C08J3/22
Filed: 1950-07-05
Abstract: A composition suitable for making gramophone record blanks is made by mixing on heated rollers amorphous carbon, e.g. acetylene black, with a polyvinyl acetal resin and incorporating the mix in a thermoplastic synthetic resinous material together with, if desired, a plasticizer, e.g. dioctyl phthalate and a stabilizer, e.g. lead stearate. Synthetic resins mentioned are polyvinyl chloroacetate and copolymers of vinyl chloride and vinylidene chloride.  Specification 627,836 is referred to.
Patent GB-751173-A (GB)
Title: Removal of salts from return flow condensate in steam power plants
IPC: F22D11/00
Filed: 1954-06-08
Abstract: 751,173. Feedwater supply systems for steam boilers. SULZER FRERES SOC. ANON. June 8, 1954 [July 8, 1953], No. 16723/54. Class 123(2). In a steam power plant, salts are removed from the return flow condensate by tapping-off a portion of the condensate at a point after the condensate pump 2 or the cooler 3 of a steam-jet air pump, removing salts from the tapped-off portion in, say, ion-exchange apparatus 6, and returning said portion to the main stream of condensate at a point before the tapping off point, e.g. to a point in front of the pump 2 or direct to the condenser 1.
Patent GB-1360346-A (GB)
Title: Sampling device
IPC: G01N1/14
Filed: 1973-03-26
Abstract: 1360346 Sampling liquids A Q KHAN 26 March 1973 [12 April 1972] 16821/72 Heading B8N A device for continuously sampling rivers, sewage effluent or liquid passing along a channel 10 comprises extraction means such as a submersible pump 11 and cylinder 13 for continuously extracting liquid and providing a head of liquid, and sample collecting means 20, 22 and 28 having an overflow 24 at a predetermined level relative to the level of the head of liquid according to the desired sampling rate. As shown, liquid with suspended particles is continuously circulated up through the cylinder 13 and back to the channel 10 through a down-pipe 15 by the pump 11. A sample take-off pipe 17 is connected to the overflow 24 via a settling chamber 20 and the height of the overflow is adjustable to obtain the desired rate at which the liquid and suspended particles can be collected in a vessel 28. The height of the overflow 24 may be fixed or automatically adjusted in accordance with the rate of flow along the channel 10 by means of a float 30 and a band 31 which passes over a rotatable cam 32; alternatively, the height may be adjusted by use of a servo system operating according to a signal from a flow integrator. At the end of a sampling period, a valve 19 is closed and a valve 29 opened to release the particles accumulated in the settling chamber 20 and the liquid remaining in the collecting means into the vessel 28. A weir may be provided in the channel 10. When oil free from suspended particles is being continuously sampled, the settling chamber 20 can be omitted. Samples could be passed to individual containers on a time basis.