baber/WOPTO huggingface dataset:
Patent GB-674859-A (GB)
Title: Motion picture film photographic printing method and means
IPC: G03B27/475
Filed: 1948-11-16
Abstract: 674,859. Duplicating sound films by photographic projection copying. SOC. D'ETUDES TECHNIQUES ET INDUSTRIELLES APPLIQUEES (S.E.T.I.A.). Nov. 16, 1948 [Nov. 24, 1947], No. 29842/48. Class 98 (i). A method of simultaneously and continuously producing two photographic copies of a negative film, e.g. a film bearing a sound record, comprises moving continuously at a uniform speed the negative film between a light source and a single objective, bisecting the light beam leaving the objective perpendicularly to the direction of movement of said film, and deflecting each half of the beam upon one of two lightsensitive films moving at a uniform speed in a direction opposite to that of the negative film. As shown in Fig. 1, an original sound film 4 to be copied and blank films 7, 8 are moved in opposite parallel directions perpendicular to the plane of drawing, the image of the film 4 being projected by an objective 1 on to the films 8 by overlapping parallel faced prisms 13, 14 having their faces 15, 16 nearest the objective in the same plane parallel to the film 4 and perpendicular to the optical axis and their adjacent sides 19, 21 in contact in the plane of the drawing and passing through the centre of the objective. In' an alternative arrangement, Fig. 6, two prisms 43, 44 similar to the prisms 13, 14, are disposed in non-overlapping relationship with their entry faces coplanar and on opposite sides of a plane through the centre of the objective and perpendicular to the directions of film movement, and with their adjacent edges 45, 46 in contact. In a further form, Fig. 7, two mirrors 53, 54 disposed in the same way as the reflecting faces 23, 22 of the prisms 13, 14 are employed to expose blank films 57, 58 disposed in parallel planes perpendicular to the original film 4.
Patent GB-1193308-A (GB)
Title: Diesel-Electric Locomotive with Direct-Current Traction Motors Fed from a Three-Phase Current Generator through Rectifiers
IPC: B60L50/12
Filed: 1967-06-28
Abstract: 1,193,308. Control of D.C. motors. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. 28 June, 1967 [30 June, 1966], No. 29858/67. Heading H2J. [Also in Division G3] D.C. traction motors 4a, 4b are supplied via controlled rectifiers 3a, 3b from a three-phase, separately excited generator 2 driven by a variable speed diesel engine 1. Firing of the rectifiers is determined by the difference between the actual power delivered to the motors, as determined at 6 by the product of the current measured at 14 and the voltage at 16, and a reference value produced by function generator 5 in dependance upon the speed of the generator as measured by its frequency at 15. The function generator is designed so that the diesel operates at its optimum power output for the speed at which it is running. The power difference is amplified at 7, the output of which may be opposed by a current limit device 12 or a wheel slip detector 11 which detects misbalance between motor currents. After further amplification at 8 the signal controls a firing circuit 9a directly, and another 9b via a device 10 which causes less power to be delivered to the leading driving axles. The generator 2 has a voltage-speed characteristic rising steeply in the lower speed range and less steeply thereafter. Each rectifier may supply one or more motors. The firing circuits comprise transistors or thyristors which deliver either individual pulses or trains of pulses.
Patent GB-1267358-A (GB)
Title: Fuel control system for a gas turbine engine
Inventor: FIELD RICHARD JOSEPH
IPC: F02C9/00
Filed: 1968-06-24
Abstract: 1,267,358. Gas turbine engine fuel systems. JOSEPH LUCAS (INDUSTRIES) Ltd. June 16, 1969 [June 24, 1968], No. 29924/68. Heading F1G. A gas turbine engine fuel system comprises a venturi through which fuel flows to the engine burners, a control device sensitive to the fuel pressure upstream of the venturi and at the throat of the venturi, loading means sensitive to an air-pressure signal derived from the engine compressor for varying the loading applied to the control device, and a governor mechanism driven at a speed proportional to the engine speed for modifying the air-pressure signal applied to the loading means in accordance with the relationship between the desired and actual engine speeds. Fuel is delivered from the fuel pump 10 to the engine burners via a venturi 11, the pressures upstream of the venturi and at its throat being applied in opposition to a by-pass valve 12 (or to a throttle valve if the fuel pump is of centrifugal type or to the servocontrol of a variable displacement fuel pump). The valve 12 is also acted on by a spring 16 and a lever 14, a variable loading being applied to the lever by a loading device 17. The device 17 comprises diaphragms 18, 19 of unequal area having interengaging stops 20, 21 and urged in opposite directions by a spring 22 and a bi-metallic spring 23 sensitive to the ambient temperature. The space 9 enclosed by the diaphragms 18, 19 is subjected to a pressure derived from the engine compressor delivery but modified by a blade 35 which is movable between a pair of nozzles 36 to deflect a variable proportion of the air-flow between the nozzles, the blade being movable under the opposed influences of a throttle link 33 and an engine-driven governor weight 27. During steady running, the blade 35 controls the pressure applied to the space 9whereby the by-pass valve 12 is positioned to maintain the engine speed at the value demanded by the throttle link 33. During acceleration, the blade 35 is completely clear of the nozzles 36 so that substantially the full compressor delivery pressure is applied to the chamber 9. When the pressure in the chamber 9 is above a predetermined value, dependent on the ambient temperature sensed by the bi-metallic spring 23, the diaphragms 18, 19 separate from one another so that the loading of the spring 22 is no longer felt by the diaphragm 18. This ensures a sufficient margin of acceleration.
Patent GB-1353193-A (GB)
Title: Pneumatic anti-skid devices
IPC: B60T8/50
Filed: 1971-06-25
Abstract: 1353193 Anti-skid device KNORR BREMSE GmbH 25 June 1971 [26 June 1970] 30031/71 Addition to 1335916 Heading F2F The pneumatic anti-skid device of Specification 1,335,916 is provided with a further throttle 61<SP>1</SP> which during the build up of pressure after a pressure drop due to a skid sensing and the subsequent steady pressure state is closed by the piston 3 but which after the steady state is opened to allow rapid venting of the chamber 5.
Patent GB-892526-A (GB)
Title: Improvements in timepiece movements
IPC: G04B17/34
Filed: 1960-08-31
Abstract: 892,526. Clocks and watches. GREINER ELECTRONIC A.G. Aug. 31, 1960 [July 1, 1960], No. 30049/60. Class 139. A balance spring collet R has a groove N which receives the inner coil of the balance spring. The bottom surface F of the groove is cylindrical about the axis of which is parallel to the axis b of the conical bore B. The groove N is interrupted at H and G to provide a releasing edge K which with the axis f defines the X-axis of the co-ordinate system shown. The axis b of the bore B is spaced from the X-axis by a distance which is at least ¢# times the pitch of the balance spring and is located in the third or fourth quadrants of the coordinate system.
Patent GB-698505-A (GB)
Title: Improvements in or relating to method of producing concentrated hevea rubber latex
IPC: C08C1/10
Filed: 1950-12-08
Abstract: Ammonia in an amount sufficient to produce a latex having a pH value of at least 8.5 and not in excess of 11.0 and at least 0.035 per cent and not more than 0.25 per cent, expressed as PO4 based on the weight of latex, of sodium, potassium or ammonium phosphate are added to Hevea rubber latex prior to separating the latex e.g. by centrifuging, into a rubber-rich layer and an essentially rubber-poor layer, the rubber-rich layer being a concentrated latex which can be shipped and stored with substantially no subsequent sludge formation and having improved mechanical stability.  The phosphate is preferably added after the latex has been stabilized by the addition of ammonia.
Patent GB-209876-A (GB)
Title: Improvements in machines for casting metal
IPC: B22C13/10
Filed: 1922-11-03
Abstract: 209,876. Brookfield, D. Nov. 3, 1922. Moulds; castings, extracting.-Moulds, particularly permanent moulds for pipes, are trunnioned in a supporting frame to permit both upending and lateral discharge of the casting. The lower mould part f rests by pins p in recesses o provided in the heads of rams h. The upper part e is trunnioned to a standard b, the trunnions carrying a quadrantal slot m engaging a pin n to limit the turning movement. The rams h raise the lower part to be secured to the upper and are then retracted, a link i is pivotally connected to one of the rams which is then operated to upend the mould. To permit the casting to contract sections x at one end of the mould are withdrawn laterally by screws y. On return of the part f to its lower position the piston rod of an oscillating cylinder r is pivotally connected to the mould at t and the mould is rotated about one pair of pins p as limited by a stop w to discharge the casting to a runway v. The centrally-disposed cylinder r may be replaced by a pair of laterally-disposed cylinders and for heavy work the part e is trunnioned on each side, an adjustable arrangement of standards being provided.
Patent GB-301732-A (GB)
IPC: G03C7/14
Abstract: 301,732. Soc. Franþaise Cinechromatique ProcÚdÚs R. Berthon, (Assignees of Soc. Civile pour l'Etude de la Photographie et de la Cinematographie en Couleurs). Dec. 3, 1927, [Convention date]. Projection-printing apparatus for the reproduction of colour-record images made on lenticular films comprises in combination (1) a punctiform or linear source of light A; (2) an oscillating mirror E; (3) a condenser F which together with the mirror E projects through the original lenticular film an image of the source of light into the plane of the diaphragm G of the projection lens system D; (4) an oscillating diaphragm G follow. ing the displacements of the image of the source of light and restricting the useful beam to the central portion of that image; (5) a shutter H having a normal blade h<1>, and two auxiliary blades h<2>, h<3> by which the light is intercepted during exposure when the aperture of the diaphragm G passes two points of the lens pupil corresponding to the opaque boundaries between the colour zones of the tricolour screen used for recording the images in the original film; (6) a lens system K for changing the angle of incidence of the projected beam on the film to be printed; (7) a gate B for the original film, and a gate on the right of the. lens K for the blank lenticular film to be printed; and (8) a fogging lamp behind the latter film, intended to reduce the hardness of the reproduced images when these are photographically reversed. In the apparatus described, the original film is fed downwards through its gate B, and the film to be printed is fed upwards through its gate, a fan being provided for cooling the lamp chamber A and the original film. The shaft of the shutter disc H carries an eccentric J which oscillates the diaphragm G through a lever j',. and also through links j<2>, j<3>, spindle j<5>, and link j<4> produces the correlated oscillation of the mirror E. Specification 10611/09, [Class 98 (ii), Photographic processes &c.], is referred to.
Patent GB-445941-A (GB)
Title: Improvements in or relating to overhead electric distribution systems
IPC: H02G7/20
Filed: 1934-10-22
Abstract: 445,941. Suspending cables. PIRELLIGENERAL CABLE WORKS, Ltd., and HARDING, J. R., 343, Euston Road, London. Oct. 22, 1934, No. 30205. [Class 36] An overhead electrical distribution system comprises a cable having a neutral earthed conductor forming an outer casing and one or more live conductors embedded in insulating material, the ends of the neutral earthed conductor being connected to fittings capable of withstanding the mechanical tension existing in the cable. A service connection 8 comprises a central insulated live conductor 12 and an earthed conductor 13 surrounding the conductor 12. The bared or insulated conductor 12 is led out at each end, sealing chambers or clamps 14 being provided at the leading-out points, and is attached at the one end to the transmission line conductor 1 and at the other is led through the wall of the consumer's premises by means of a leading- in tube 17 or connected outside the consumer's premises to a separate lead-in cable. The earthed conductor 13 is secured to insulators 7, 11 respectively secured to the service pole 3 and the wall 9 of the consumer's premises, and is connected to the neutral main conductor 2. The conductor 12 may be of copper wires or strands insulated with rubber or a rubber compound and the conductor 13 may be of tinned or plain hard-drawn copper or cadmium-copper and may be of circular or segmental section laid up around the insulation with or without bedding material; external insulation may also be applied.
Patent GB-498624-A (GB)
Title: Improvements in and relating to chains of elastic material
IPC: B01D29/39
Filed: 1937-11-04
Abstract: 498,624. Treating solids with liquids. SCHEIDT, W. H. Nov. 4, 1937, No. 30221. Convention date, Aug. 24. [Class 82 (i)] [Also in Group I] Chain-like structures 1, which may be used in lixiviating-apparatus, are made from a continuous cord of solid rubber or like elastic substance suitably resistant to corrosion, or wire or cord coated with rubber.
Patent GB-390876-A (GB)
Title: Pump for liquids
IPC: F02M59/04
Filed: 1931-10-31
Abstract: 390,876. Capillary-action lubricating. BARBAROU, M. J. B., 28, Boulevard d'Argenson, Neuilly-sur-Seine, France. Oct. 31, 1931, No. 30238. Convention date, Nov. 24, 1930. [Class 12 (iii).] In a revolving-cylinder pump the stuffing- box for the shaft 2 is supplied with lubricant from a space 41 by means of a wick enclosed in a tube 43, which is held by a plug 44.
Patent GB-260432-A (GB)
Title: Improvements in or relating to tennis net cords
IPC: A63B61/00
Filed: 1925-12-01
Abstract: 260,432. Hirst, R. R., and Hirst A. Dec. 1, 1925. Lawn-tennis and like nets.-The end of a tennis-net cord is connected to the winding barrel of a straining gear by means of a length of rope or cord fashioned or provided with means at one end to enable it to be detachably secured to the winding barrel, and at the other end with means to enable it to be detachably secured to the net cord. As shown, the connector comprises a wire cord a provided at each end with a spliced loop a<2>, the ends of each splice being served with thin wire a' and soldered over. The loop at one end passes around a recessed portion of a headed pin b, Fig. 1, the shank of which is adapted to enter a hole in the surface of the winding drum. In a modification, the loop may be passed over a hook projecting from the drum. The loop at the other end of the connector may directly engage a loop d on the end of the net cord, or may be connected thereto by a shackle c, Fig. 1, a hook-member e, Fig. 3, a split-hook f, Fig. 5, or by a pair of snap hooks h, h<1>, Fig. 7.
Patent GB-714918-A (GB)
Title: Improvements in or relating to interference microscopes
Inventor: PHILPOT JOHN ST LEGER
IPC: G02B21/14
Filed: 1950-12-13
Abstract: 714,918. Phase microscopes. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 13, 1952 [Dec. 13, 1950], No. 30412/50. Class 97(1) In a phase microscope having a high power objective (focal length 4 mm or less), a condenser, and congregate components for producing the phase effects imaged one on the other by the condenserobjective combination with positive magnification in a plane not coinciding or congregate with the image of the object, the second principal plane of said combination is arranged to be nearer the object than the image of the latter formed by the objective and the condenser is of high power (focal length 4 mm or less) and is used at its proper working distance from the object. The condensers may be identical with the objective when one component is imaged at a magnification of less than unity, or the said identical condenser may be used with a weak positive lens when the congregate components may be located at the principal planes of the combination. The invention is described with reference to the double-focus microscope disclosed in Specification 639,014. As shown in Fig. 1 a double-focus lens 6. comprising a calcite component a, with its crystal axis perpendicular to the optical axis of the microscope, enclosed between glass components, is imaged by a condenser 4 and objective 2 on a similar lens 7, these lenses being at the principal phases P 1  P 2  of the system formed by condenser 4 and objective 2. The illuminating beam is polarized by member 9 and passes an analyser 8 before an image of the object 3 is formed at 3a for observation in the eyepiece 1. To avoid confusion of this image with the other axially spaced image formed by the double-focus lenses the latter may be replaced by the lens shown in Fig. 2 having a conical internal surface 11 which produces such aberration in one image that it has no disturbing effect on the other. Specification 645,464 also is referred to.
Patent GB-669448-A (GB)
Title: Improvements in and relating to air or gas pressure-reducing devices
Inventor: FAWDREY CECIL ARTHUR
IPC: G01P13/00
Filed: 1949-11-28
Abstract: 669,448. Gas-blast switches. METROPOLITAN-VICKERS ELECTRICAL CO:, Ltd. Nov. 23, 1950. [Nov. 28, 1949] No. 30488/49. Class 38 (v). [Also in Groups XX and XXIX] A combined pressure reducing device and flow indicator for providing a flow of air or gas at substantially atmospheric pressure from a high pressure, e.g. 300 p.s.i., source and suitable for supplying air or gas blast electric circuit breakers comprises an inlet port 5 opening through a filter 4 into an inlet chamber, a discharge chamber 3 connecting, through a filter .12, with an outlet 15, and a capillary tube 7 inter-connecting the inlet and discharge chambers and through which the pressure drop is obtained. The free end of the tube in the discharge chamber is bent at a right angle and carries an indicator plate 16 so that deflection of the tube due to the reaction of the issuing jet can be observed through a calibrated window 6. Alternatively, the capillary tube may be in the form of a spiral or helix which is wound or unwound by the jet reaction, or the jet may impinge upon a vane which constitutes or is connected to an indicator.
Patent GB-270363-A (GB)
Title: Improvements in or relating to apparatus for printing late news in news-paper printing machines
IPC: B41F13/46
Filed: 1925-12-03
Abstract: 270,363. Ruben, S. Dec. 2, 1925. @tic contact rectifiers, arrangements of.- The electronegative element of the rectifying couple is made of a material having inherent film-forming properties and comprises a metal base such as copper, zinc, tin, silver, antimony, lead, manganese, iron. or vanadium or alloys thereof, combined with one or more of the elements oxygen, sulphur, tellurium and selenium. According to one form a brass containing 80 per cent of copper is given a surface coating of mercury and then exposed to vapours of the sixth group in a non oxidizing atmosphere and heated to a temperature of from 150‹ to 500‹ C. Alter. natively, a selenide may be formed by exposing the brass to a mixture of sulphur and selenium at a temperature of 800‹ C., occluded gases being subsequently expelled by a further heating. The - electrode is then machined to form a flat smooth contact surface. In other forms the electronegative element is formed by mixing together the required materials in a powdered or crystalline form and forming them into an ingot under beat and pressure. For the electropositive element of the couple is employed a metallic element such as calcium, magnesium, zinc, boron, aluminium or an amalgam thereof, for example, a disc of the required metal may be treated in a saturated solution of mercuric chloride. To form a rectifier suitable for charging batteries from an alternating current source the elements 13, Fig. 1, forming rectifying couples are clamped together on an insulated bolt 12 and connected as shown to a supply transformer 17. To prevent discharge of the battery in the event of failure of the supply, a cut out which may consist of a similarly constructed couple 23 is provided in the charging circuit.
Patent GB-306432-A (GB)
Title: Improvements in bakers' ovens and the like
IPC: A21B1/46
Filed: 1927-11-14
Abstract: 306,432. Procter, E. Nov. 14, 1927. Bakers' ovens.-In a baker's oven of the kind in which the conveyer moves through a circular path, and the trays or plates for the goods are continuously maintained in an horizontal position, the trays b are grouped, for example, in fires as shown, and the conveyer is operated intermittently so that there is always one group of trays accessible for loading and unloading. The oven has a forward extension f<2>, and the trays may be automatically tipped on emergency from the extension, and before passing to the loading platform formed by its upper surface. The loading platform may be enclosed by an insulated casing i. The trays may be guided by rails h, and peel ovens g<1>, g<2> may be forced in the space around which the conveyer moves.
Patent GB-538343-A (GB)
Title: Improvements in photographic film
IPC: G03D15/00
Filed: 1939-11-22
Abstract: 538,343. Cellulose derivative compositions. KODAK, Ltd. Nov. 22, 1939, No. 30586. Convention date, Nov. 23, 1938. Drawings to Specification. [Class 2 (ii)] [Also in Groups XX and VIII] An anti-abrasion coating for a film containing a visible image is formed by applying to one or both sides of the film a solution of a cellulose ester or ether-ester, containing a dicarboxylic acid radical, the carboxyl groups of which are linked by intervening carbon atoms, one of the carboxyl groups being joined to the cellulose. Specific cellulose derivatives referred to are cellulose acetate phthalate, cellulose acetate succinate, cellulose acetate maleate, cellulose acetate propionate phthalate, methyl cellulose phthalate, and ethyl cellulose phthalate. Coatings of synthetic resin may be applied over the cellulose derivative layers. The film support may be of cellulose nitrate, of cellulose organic ester, such as cellulose acetate or cellulose acetate propionate, or of synthetic resin. Wetting agents such as alkylated naphthalene sulphonic acids or their salts and plasticizers such as diethyl phthalate or triacetin may be added to the coating solution. Solvents having only a slight solvent action on the support are used when the coating is to be applied to the support side. Examples of suitable mixtures are methyl alcohol. with water or with benzene ; ethyl alcohol with acetone and water, or with isopropyl alcohol, water and "Igepal C" (Registered Trade Mark), or with isopropyl alcohol, water, and n- or see-butyl alcohol or the monobutyl ether of ethylene glycol, or with monoethyl ether of ethylene glycol, ethyl acetate, methyl alcohol, and toluene ; n-propyl alcohol with water or with tetrachlorethane, or with acetone and water ; and isopropyl alcohol with acetone and water. Other more active solvents may be used on the emulsion side. A number of other solvents and solvent mixtures for cellulose acetate phthalate are specified.