baber/WOPTO huggingface dataset:
Patent GB-1293705-A (GB)
Title: PROCESS FOR THE MANUFACTURE OF THE DISODIUM SALT OF alpha-CARBOXYBENZYLPENICILLIN
IPC: C07D499/72
Filed: 1971-04-19
Abstract: 1293705 Preparation of crystalline disodium α-carboxybenzylpenicillin PFIZER Ine 19 April 1971 [26 Jan 1971] 27119/71 Heading C2A A process for preparing crystalline disodium α-carboxybenzylpenicillin comprises the steps of combining an aqueous solution containing 10 to 50% by weight of disodium α-carboxybenzylpenicillin with n-propyl alcohol, removing the major portions of the solvents by codistillation with n-propyl alcohol and separating and drying the resulting disodium α-carboxybenzylpenicillin. The disodium salt solution may be prepared by suspending monosodium α-carboxybenzylpenicillin in water and adjusting the pH to between 6 and 7 with a basic compound such as sodium hydroxide, sodium bicarbonate or sodium carbonate. Alternatively, the disodium α-carboxybenzylpenicillin solution is formed in situ by hydrolysis of the N-ethylpiperidine salt of phenyl α-carboxybenzylpenicillin to yield free α-carboxybenzylpenicillin, extracting the free penicillin with a solvent such as n-butanol, ethyl acetate or butyl acetate and adding an aqueous solution of a basic substance, e.g. sodium hydroxide, sodium bicarbonate or sodium carbonate to yield the disodium salt of the penicillin. The compound prepared by this method is also claimed.
Patent GB-226766-A (GB)
Title: Improvements in ignition means for engines of the explosion or internal combustion type
IPC: F02B19/10
Filed: 1923-08-21
Abstract: 226,766. Claudel, R. Aug. 21, 1923. Valves.-Ignition of heavy fuel mixtures is effected by igniting in a recess 5 a specially prepared mixture made with the same fuel as is used in the main mixture; the main admission or exhaust valve 2 is adapted to rise sufficiently to close the orifices 13 leading from the recess into the combustion chamber.
Patent GB-271733-A (GB)
Abstract: 271,733. Constantine, Ltd., A., and Hazlewood, G. W. Nov. 6, 1926. Refuse - destroying stoves; closed solidjuel stoves; boilers, arrangement of. -- Comprises a construction of sawdust and like burning stoves, of the type having an inner fuel-container 18 into which the fuel is rammed round a former 25 which is subsequently withdrawn to leave an air shaft, and an outer casing 10 forming an annular flue-space 19 around the fuel-container, the bottom of the fuelcontainer being above that of the outer chamber to provide a space into which air is admitted through regulable openings, subsequently passing to the fuel through a central aperture 17<b> in the bottom of the fuel-container. The outer sheetmetal casing 10 is mounted on a separate baseplate or ash-pan 11, and contains an horizontal diaphragm 17 mounted, preferably on legs 17a, above the air-admission opening 10<a>. The diaphragm forms the base of the fuel-container, and is provided with a central aperture 17<b> which receives the end of the former 25 and a flange 17<c> which locates the lower end of the fuel-container. The fuel-container extends up to the cover, which preferably comprises a rim 20 with locating- fianges for the outer-casing and fuel container, and removable annular and centre sections. Rods 21 extending through the annular flue-space clamp the parts together. The gases pass through one or more lateral openings 18<a> at the top of the fuel-container to the annular flue around it, and thence to an outlet 10<b> above and adjacent to the diaphragm 17. An annular boiler 28 may be arranged, as shown in Fig. 4, at the top of the stove. In modifications, the fuel-container is provided with a water-jaoltet, which may take the form of a helicallv-coiled tube. The former 25 is hollow to accomodate a tool 26 used for tamping down the fuel.
Patent GB-956983-A (GB)
Title: Roll-oil and roll-neck lubricant for metal-rolling
Inventor: TESSIER KEITH CAMPBELL
Filed: 1961-07-27
Abstract: A roll-oil or roll-neck lubricant comprises a major amount of an alkylate bottoms fraction boiling above 400 DEG  F. together with from 0.1 to 20%, preferably 2-10% by weight of a non-soap thickening agent, e.g. polyisobutylene. The lubricant may also contain a long chain saturated aliphatic alcohol, e.g. lauryl alcohol, and isopropyl oleate.  In an example, an antioxidant and an anti-rust agent known under the Registered Trade Marks "Parabar 441" and "Lubrizol 859" respectively are present in the composition.
Patent GB-209473-A (GB)
Title: Improvements in or relating to recording instruments
Filed: 1922-10-09
Abstract: 209,473. Mond, A. L., (Schaeffer & Budenberg Manufacturing Co.). Oct. 9, 1922. Watchmen's clocks.- Apparatus comprising a casing normally enclosing all the operative parts for recording on a chart the chronological variations of a variable factor is provided with additional marking means adapted to be actuated by the attendant so that each time he examines the record, the chart is positively marked to show that it has been inspected. A spring push button 15 is arranged in a socket passing through the glass face 2 of the instrument and carries a needle 16 by which the chart 5 may be perforated. In another form the plunger is arranged on the side of the instrument and a flexible needle and curved guide tube provided. In a third form, a spring strip secured to the inside of the casing carries a pencil normally held clear of the chart, but which, when the push is operated, is lowered on to the chart and a mark made.
Patent GB-791703-A (GB)
Title: Improvements in or relating to insulating bodies for electric switches
IPC: H01H19/62
Filed: 1955-09-26
Abstract: 791,703. Multi-position switches. CUTLERHAMMER, Inc. Sept. 26, 1955 [Oct. 22, 1954], No. 27365/55. Class 38 (5). An insulating switch body 10 comprises a transverse wall 42 surrounded by a peripheral wall 44 extending above and below the wall 42 to form upper and lower cavities closed by plates 24, 36 resting on shoulders 44a, 44b formed in the wall 44. Fixed contacts 12, 14, 16, 18 extend through slots 47 and are retained by depressions 46 formed in the wall 42, the movable contact springs 52, 54 being riveted to a bar 50 received in a depression 48 and being respectively controlled by cams 34, 32 on a shaft 22. The shaft is located by a cam 28 co-operating with springs 30. A further body 10 may be added to the bottom of the first and be provided with contacts and cams, the shaft 22 being extended to operate both switches. In a modified 2-unit construction. (Fig. 4, not shown), the intervening plate 36 is made shorter and the bar 50 is made deeper and passes from one unit into the other.
Patent GB-727551-A (GB)
Title: Improvements in switches or points for mono-track railways
IPC: E01B25/12
Filed: 1953-10-06
Abstract: 727,551. Mono-railway switches. ALWEGFORSCHUNG GES. Oct. 6, 1953 [Oct. 6, 1952], No. 27379/53. Classes 104 (1) and 104 (2). The switches of a mono-track railway comprise two or more rail sections 4, 5 mounted on a plate 3 to form a structure 2 which is constructed of concrete or reinforced concrete. The structure 2 is swung about an axis 12 towards one end and is supported by balls, rollers 9 or the like disposed between annular members 10, 11 and at the other end is supported by balls, rollers 6 or the like running on an arcuate plate 8.
Patent GB-694840-A (GB)
Title: Improvements in and relating to hydraulic or pneumatic servo-control systems
IPC: F15B9/08
Filed: 1951-11-22
Abstract: 694,840. Fluid-pressure servomotor-control systems; fluid-actuated valves. LEDUC, R. Nov. 22, 1951 [Jan 18, 1951], No. 27416/51. Class 135 A servo-control system includes a latch-locking member 11 movable by a spring 12 for locking the controlling member 7 to the controlled member 29 when the supply pressure falls below a critical value and the full supply pressure to latch-releasing position, and means, e.g. the piston 22, responsive to the supply pressure for interrupting the supply and short-circuiting the servo-motor when the pressure falls below a critical value. Manual upward movement of the member 7 moves cones 3, 4 through a reducing lever 8 to open and close ball valves 2, 1 respectively, so that supply pressure acting in the space 9 moves the piston 29a upwards until the valves are reseated, exhaust from the space 9a passing through the valve 2 and pipe 17. The supply pressure acts via passage 10 to move a piston 11 downwards, but should the pressure fail the spring 12 forces the piston and coned member 13 upwards so that balls 14 enter cavities 14a and direct manual actuation of member 29 is possible. When the supply pressure fails a spring 23 moves the piston 22 downwards so that the valve 26 closes the supply from pipe 31 and valve 24, 25, opens to by-pass the piston. Should one of the supply conduits 31a, 31b or 16a, 16b break, ball valves 27, 30, respectively close the broken and open the unbroken conduit. Specification 654,415 is referred to.
Patent GB-480287-A (GB)
Title: Colour photography and kinematography
IPC: G03C7/26
Filed: 1936-10-09
Abstract: 480,287. Colour photography. TRUECOLOUR FILM, Ltd., DOLGORUKI, E. SANDERS-, and REINDORP, J. H. Oct. 9, 1936, No. 27435. Drawings to Specification. [Class 98 (ii)] Two exposed superposed silver halide emulsion layers or strata are developed to silver images and fixed, the upper image bleached to silver iodide and the lower image to silver ferrocyanide or other redevelopable salt, the lower image colour developed, and the upper image coloured in any suitable manner. The iodine bleaching solution comprises 0À4 per cent iodine and 6 per cent potassium iodide, and is followed by a sodium sulphite stop bath. The other bleaching solution is an ammoniacal solution of potassium ferricyanide. A magenta colour developer comprises diethylparaphenylenediamine hydrochloride and p-nitrobenzylcyanide with the usual additions and isopropyl alcohol. The silver iodide image may be toned blue-green with an acetic acid solution of Iodine Green followed by treatment with silicotungstic or phospho-tungstic acid. The silver and silver iodide in the two layers may be removed by Farmer's Reducer. In a modification, the silver iodide layer is re-developed to silver by an alkaline amidol developer, coated with pigmented gelatine, and treated with a bath bleaching the silver and hardening the contiguous gelatine. The unhardened gelatine is removed with warm water, and the silver and silver salts removed. Alternatively, the re-developed silver image is rebleached with a ferricyanide bleacher and colour-developed. Before treatment of the silver iodide image, the silver in the lower layer may be bleached to silver ferrocyanide, which is dissolved out by sodium sulphite. The process may be applied to different strata of a single emulsion layer, or to films having two superposed layers on one side of the support and one or two layers on the other side of the support. The layers on the opposite sides of the support may be processed by flotation, or a varnish layer, which may also serve as the anti-halation layer, may be applied to one side of the material. In a three layer film after development and fixing, the upper of the two superposed images may be converted to silver iodide, and the other two images differentially colour-developed. The silver iodide image is then coloured. Specifications 377,706, 382,320, 465,090, and 480,251 are referred to.
Patent GB-379887-A (GB)
Title: Improvements in cigarette making machine printing and bronzing devices and bronze collecting means therefor
IPC: B41G1/00
Filed: 1931-10-05
Abstract: 379,887. Centrifugal separators. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(American Machine & Foundry Co. ; 511, 5th Avenue, New York, U.S.A.) Oct. 5, 1931, No. 27597. [Class 23.] A suction device 15 is provided for exhausting air and excess bronze from a bronzing-device and for delivering the same into a separator 19 provided with a receptacle for the bronze, such as a bottle 20, and with a central outlet 21 through which the air is forced up into a leaky bag 23 suspended by a spring 25 attached to the bag closure clamp 24.
Patent GB-505835-A (GB)
Title: Improvements in or relating to clarinets
IPC: G10D7/06
Filed: 1937-10-12
Abstract: 505,835. Clarinets &c. DEGREZ, A. Oct. 12, 1937, Nos. 27694 and 27695. Convention dates, Oct. 15, 1936 and Nov. 26, 1936. [Class 88 (ii)] To correct the flatness of certain notes in the upper registers of a clarinet, an additional tampion-controlled hole between the mouthpiece and the octave hole is provided, the hole having a diameter of from one to five millimetres and being located at a distance from the end of the mouthpiece of from eighty to two hundred and eighty millimetres. InFigs. I, 2 the tampion of the additional hole 3 is allowed to rise on opening the octave hole by key 1, provided the semiannulus 6 round the hole emitting F, or the key of the normally closed hole 9 emitting A, is not depressed. In Figs. 5 to 7 (not shown), the tampion of the additional hole is allowed to rise on opening the octave hole and closing by the left thumb, the annulus at the hole emitting G, the annulus at the hole emitting F remaining raised. Two other modifications of the actuation are described. The notes affected by the invention are those from C two leger lines above the treble stave to Eb above the sixth leger line.
Patent GB-509375-A (GB)
Title: Process for the production of artificial threads from cellulose solutions
IPC: D01F2/00
Filed: 1938-09-23
Abstract: 509,375. Artificial filaments. RHEINISCHE ZELLWOLLE AKT. - GES. Sept. 23, 1938, No. 27810. Convention date, Sept. 23, 1937. [Class 2 (ii)] Artificial threads of fibrous Structure and high tensile strength are produced from highly concentrated cellulose solutions, containing, for example, 12 per cent of cellulose, by extrusion through nozzles, the length of the bore of which is at least twenty times their internal diameter, into a precipitating bath with the aid of high pressure ; for example, 40 atmospheres. The threads may be subjected to a stretching process in the precipitating bath, or are drawn off at a lower speed than their speed of entry, in order to produce a curling effect.
Patent GB-1186317-A (GB)
Title: Improvements in or relating to Digital Data Storage Telecommunications Exchange Systems
IPC: H04L12/54
Filed: 1968-06-12
Abstract: 1,186,317. Digital transmission systems. SIEMENS A.G. 12 June, 1968 [13 June, 1967], No. 27818/68. Heading H4P. In a digital data exchange containing a number of storage stages, e.g. ES, ZS, the data is transferred between the stages at a higher speed than that at which it is received. The exchange has several output lines, e.g. 121, 122, going in the same direction, and it is arranged that the stores in any storage stage except the input stage ES are selected successively so that initially successive data items to be forwarded in that direction are passed to separate stores. Each data item on 11 passes to input stores ES from which it is passed at higher speed to one of the stores in stage ZS. The store is selected by unit CE which evaluates the called address stored in ES and controls switch ESK. Unit SLV determines in cyclic sequence which of the output lines are free and, via unit ZA and switch ZVK, connects the first free line to the store in ZS containing the data. The store is then read out at the required speed to the chosen line. If transmission is in progress from a store in ZS then input to that store is blocked by way of units SLV and ZVS. If a further data item now arrives unit ZVS ensures that it is passed to a free store in ZS. Only if all the lines going in the same direction (and consequently the stores in ZS) are in use does unit ZVS make available, for subsequently arriving data items, stores in ZS which already contain first data items, and only when all the stores are filled with second data items can any store be filled with third data items.
Patent GB-801244-A (GB)
Title: Improvements in or relating to ratemeters
Inventor: COX RAYMOND JOHN
IPC: G01R23/09
Filed: 1956-09-12
Abstract: 801,244. Frequency detectors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Sept. 12, 1956, No. 27837/56. Addition to 748,415, [Group XL (b)]. Class 40 (5). The circuit of the parent Specification is modified by the inclusion of a diode pump in the input circuit whereby it is utilized as a ratemeter for the logarithmic measurement of pulse rates. As shown, the anode of a pentode valve 1 is connected to the input of a D.C. amplifier 8, the output of which is in the same phase and is fed back to the screen grid to control the screen grid voltage in such a manner that the anode voltage and thus the anode and screen currents remain substantially constant. With this arrangement it is stated that the relationship between the screen grid voltage and the logarithm of the control grid current is linear over a useful working range, the voltmeter 9 indicating the value of the input current. The input to the control grid is derived from a diode pump circuit 11, negative pulses of equal amplitude being applied at 10 to charge the capacitor 6 via the diode 3. When each pulse subsides the capacitor 6 discharges through the diode 2 into the large capacitor 7, the mean current passing through the diode 2 being proportional to the pulse rate. The grid current of the pentode constitutes a leak across the capacitor 7 and under equilibrium conditions, i.e. at a steady pulse rate, this grid current is equal to the mean current through the diode 2. Hence the screen grid voltage of the pentode, which is also the output of the D.C. amplifier, varies logarithmically with the pulse rate. To ensure that the diode 2 does not conduct between pulses a potential of - 5 volts is applied to its anode through the back resistance of the diode 3. A triode valve may replace the pentode by connecting the resistor 4 in the cathode circuit and providing D.C. amplification with phase inversion between cathode and anode.
Patent GB-1065399-A (GB)
Title: Improvements in arrangements for transmitting information to trains
Inventor: POUPE OLDRICH
IPC: B61L3/22
Filed: 1964-07-07
Abstract: 1,065,399. Automatic train control. VYZKUMNY USTAV DOPRAVNI. July 7, 1964, No. 27867/64. Heading B7N. In a train control arrangement in which train control signals in rails 1, 1<SP>1</SP> are induced in coils 2, 2<SP>1</SP> on the train, amplified in units 3, 3<SP>1</SP> and applied in the same phase via separate channels including band-pass filters 4, 4<SP>1</SP>, tuned to the train control signal frequency, and amplifiers 5, 5<SP>1</SP> to primary windings 6, 6<SP>1</SP> of a transformer which develop a combined signal in its secondary, interfering signals due to traction current surges in the rails and appearing at the outputs of amplifiers 3 in opposite phase are applied via traction current filters 7, 7<SP>1</SP> and amplifiers 8, 8<SP>1</SP> to a comparator 9 which as a result of the comparison adjusts the gain of one or other amplifiers 5, 5<SP>1</SP> in the control signal channels such that equal interference signals appear at the amplifier outputs and cancel in the transformer windings.
Patent GB-656062-A (GB)
Title: A braking system for electric motors
IPC: H02P3/06
Filed: 1947-10-17
Abstract: 656,062. Control of D.C. motors. LA TELEMECANIOUE ELECTRIQUE. Oct. 17, 1947, No. 27888. Convention date, March 28. [Class 38(iii)] A system in which electric motors run under the influence of the inertia of the driven mechanism or vehicle has means adapted to provide for changeover: from regenerative to rheostatic braking without discontinuity or variation of braking-effort, the changeover occuring at a speed dependent upon the excitation of the motors and being automatically effected without the intervention of the operator, and the system is conditioned for rheostatic braking, without intermediate braking, if the supply voltage is reduced to zero. As shown, traction motors are started with armatures 3, 4, connected in series by closing switches 14, 12, and reverser 5 or 6, resistors 7, 8 being gradually reduced. Transition to the parallel connection is effected by closing switch 11, opening switch 12, and setting resistors 7. 8 at their maximum values. Switches 16, 17 are then closed and switch 11 opened. To reach maximum speed resistors 7, 8 are again reduced. The vehicle runs under its own inertia when the control elements are restored to their rest position. For braking, switches 19, 21, 14, 16, and 17 are closed, field windings 1, 2 being energized from the line through resistors 7, 8. A voltage of the same sense as that during motoring is developed across aramture 4, relay 22 comparing this voltage with that of the line. When the armature and line voltages are equal relay 22 operates contacts 5 or 6, according to the direction of the motoring drive, and closes switch 14. Reduction of resistors 7, 8 increases the field excitation and causes the armature voltage to exceed the line voltage, the motors being regeneratively braked and the field windings energized in accordance with the difference of the line and regenerative currents. When this difference approaches zero the switch 14 is opened and rheostatic braking is introduced. The continued elimination of resistors 7, 8, increases the braking-effort, the switch 14 alternately engaging and disengaging until the vehicle is-stopped. If the line voltage fails rheostatic braking is immediatelyintroduced. Resistors 18, 20 provide the desired differential compounding. In the arrangement of Fig. 2 (not shown) the motors have divided field windings, the portions being connected cumulatively for starting and in opposition for braking. One portion of each field winding may be connected across a part of resistor 7 or 8, Fig. 3 (not shown). The series field windings may be divided into three parts, one of them being used to give differential compounding during regenerative braking, Fig. 4 (not shown).
Patent GB-918146-A (GB)
Title: Improvements in methods of manufacturing glass optical elements
IPC: C03B23/26
Filed: 1960-08-11
Abstract: 918,146. Apertured optical elements. WISEMAN, J. M. Aug. 10, 1961 [Aug. 11, 1960], No. 27888/60. Class 56. In a method of manufacturing a glass optical element (e.g. lens or mirror) having an aperture therethrough, a piece of glass 1 of suitable dimensions is heated to a working temperature and placed in a mould and a die applied to form a cavity 2 in the face 3, this cavity stopping short of the opposite face 4. The cavity is formed in two parts, the major part 5 (which may be formed in steps) having sides sloping towards the base with a relief angle of- 15 degrees for easy withdrawal of the die. The minor part 6 of the cavity is formed with parallel sides or a small relief angle, e.g. 5 degrees and within its length contains the desired cross-sectional area of the aperture. The ratio of the depth of the major part to the minor part is 3 : 1. The opposite side of the element is then ground along the axis of the minor part of the cavity until the cross-section of the minor part reached in the grinding process is that of the desired size of the aperture.
Patent GB-206523-A (GB)
Title: Improved process for operating steam power plants working with very high steam pressures
IPC: F22B33/00
Filed: 1923-11-06
Abstract: 206,523. Akt.-Ges. Brown, Hoveri, et Cie. Nov. 6, 1922, [Convention date]. Drawings to Specification. Feed-water, heating.-The steam supply to the feed-water heaters of a turbine plant is controlled automatically by changes in pressure due to changes in the load on the plant.