baber/WOPTO huggingface dataset:
Patent GB-448874-A (GB)
Title: Improvements in and relating to governing devices for elastic-fluid prime movers
IPC: F01D21/02
Filed: 1934-12-15
Abstract: 448,874. Fluid-pressure servomotorcontrol systems. PARSONS & CO., C. A., and TOPHAM, H. B., Heaton Works, Newcastle-on-Tyne. Dec. 15, 1934, No. 36065. [Class 135] A governing device for elastic-fluid prime movers driving dynamo-electric generators and subject to control by variations of speed, and by sudden changes of load, comprises a main steam supply valve 25 actuated by oil under pressure acting on a spring loaded piston 23 under the conjoint control of two auxiliary valves 2, 13. The valve 13 is operated by a centrifugal governor 12 while the valve 2 is actuated by a solenoid 4 arranged in circuit with both a quick-action switch 7 and a delayed-action switch 6. These switches are operated by solenoids 9 .. 8 energized by current from a transformer 10 on the power supply bus bar 11. At full load the switch 7 is open and the switch 6 closed while at a predetermined load less than full load both switches are open and at lower loads switch 7 is closed and switch 6 open. The arrangement is such that, on a sudden decrease of load from above a certain upper value corresponding to the point where opening of the delayed-action switch is initiated to below a certain lower value corresponding to the point where the quick-action switch closes, the valve controlling the supply of fluid to the prime mover is moved towards the closed position before the speed has materially increased. In a modified arrangement the solenoid 4 is controlled by a switch operated by a solenoid in circuit with a resistance, adapted to be short circuited by the quick and delayed action switches. When this happens the solenoid core is maintained in the solenoid energized position until the circuit is opened after a predetermined time by a motor-operated switch. The desired range may be obtained by adjusting the load value at which the two switches operate by means of a potentiometer or by changing the magnetic part of the solenoids. Specifications 415,285, [Group XXXVII], and 444,271 are referred to.
Patent GB-881867-A (GB)
Title: Improvements in and relating to direct current sources employing rectifying systems
IPC: H02M7/08
Filed: 1957-11-20
Abstract: 881,867. Rectifying. COLUMBIA-SOUTHERN CHEMICAL CORPORATION Nov. 20, 1957 [Dec. 5, 1956, Aug. 22, 1957], No. 36078/57. Class 38 (2). A rectifying circuit for supplying high values of direct current to loads such as electrolytic cells comprises a large number of single rectifiers or rectifier bridges 42 supplying the load 16 in parallel from an A.C. supply transformer 112. The rectifiers are preferably germanium or silicone diodes. To equalize the currents through the parallel rectifying branches which may have different forward resistances, a further source of voltage having an appropriate small value is connected in the supply to each rectifier bridge. These further voltages may be derived from the star-connected windings of an auto-transformer 136 having taps 158, 160, 162 connected to the terminals of secondary windings of transformer 112. The rectifier bridges 42 are connected to auto-transformer tappings such as 1a-1c so selected as to give the required additional voltages. Appropriate tappings are selected while the currents in the rectifier branches are measured with a clip on ammeter. Normally the voltage used requires a number of rectifiers to be connected in series. Examples suitable for particular output voltages and currents are described. To carry a large current there may be a number of supply transformers having tapped secondary windings to allow equalization of their currents. The auto-transformer may be replaced by an independently supplied transformer. To protect the rectifiers from excess reverse or leakage currents similar resistors may be connected in parallel with the rectifiers and fuses may be included in series with the rectifiers. Specifications 881,868, 881,869 and 881,870 are referred to.
Patent GB-790853-A (GB)
Title: Improvements in and relating to liquid fuel fired combustion apparatus
Inventor: REPPEL KARL HANS
IPC: F01K23/06
Filed: 1954-12-14
Abstract: 790,853. Liquid fuel-fired combustion apparatus; generating combustion products under pressure. LA MONT INTERNATIONAL ASSOCIATION, Ltd. Dec. 14, 1954, No. 36118/54. Class 51 (1). [Also in Group XXVI] A forced recirculation steam generator is equipped with two liquid fuel-fired combustion apparatus. Each apparatus comprises a cylindrical combustion chamber 15, Fig. 1, the tubular wall of which is formed by a helicallywound tube 19 through which a portion of the circulated boiler water is caused to flow by a pump 12. Fig. 2 shows the application of the combustion apparatus to a gas turbine 27 to  which an exhaust gas boiler 28 of the forced recirculation type is fitted. The combustion air discharged from a compressor 22 enters combustion chambers 23 through ducts 24 and the liquid fuel is introduced into each chamber by an atomizer 25. On leaving the turbine 27, the combustion products pass through the boiler 28. Part of the boiler water is circulated through the helically-wound tubes 26 of the chambers 23.
Patent GB-341635-A (GB)
Title: An improved device for delivering liquids from bottles and like containers
IPC: B65D47/26
Filed: 1929-11-27
Abstract: 341,635. Pouring devices for bottles &c. WILLETTS, W. A., Heneage Street, Birmingham. Nov. 27, 1929, No. 36294. [Classes 21 and 125 (iii).] A device for delivering liquids from bottles &c. comprises a tubular conduit a having an outlet aperture a<3> and an air inlet a<4>, and a cylindrical cap b having apertures which can be turned into or out of register with those in the part a. A cork, screw cover, contractilecap or crown-cork union member c may be provided on the part a for engagement with a bottle &c., and a partition a<5> may be provided to form two channels one for air and the other for liquid. The cap is secured by a pin and bayonetslot joint which limits the rotation thereof.
Patent GB-900166-A (GB)
Title: Automatic plant feeder and irrigator
IPC: A01G27/00
Filed: 1959-10-27
Abstract: 900,166. Treatment of plants. GUDGIN, J. E. Oct. 25, 1960 [Oct. 27, 1959], No. 36294/59. Class 6(2). A device for controlling the watering of plants in composts and cultivated soils, or of cut blooms, comprises a screw-threaded cylindrical member b provided with a hollowed portion r, filter f and a passage leading to a valve seating s, a container c of liquid (not shown) screwed on to the upper part of the member b and a valve housing h screwed on to the lower part of said member. Liquid flows freely from the container c into the reservoir r, but its passage from thence into the housing h is controlled by valve v, co-operating with the seating s, the valve being controlled by springs g<SP>1</SP>, g<SP>2</SP>, the tensions of which are adjustable by means of adjusting the screw a and thereby raising or lowering the platform p. Liquid leaves the housing h via holes provided at its lower end.
Patent GB-1280684-A (GB)
Title: Treatment of tobacco
Inventor: BROWN PETER WYATT
IPC: A24B3/18
Filed: 1969-07-18
Abstract: 1280684 Treating tobacco CARRERAS Ltd 19 Oct 1970 [18 July 1969] 36316/69 Heading A2C To increase its specific volume, tobacco is moistened by spraying or sprinkling with water or an aqueous tobacco extract in a controlled manner so that the water or extract is absorbed without surplus and for such a period that the moisture content is increased to a predetermined extent, and the moistened tobacco is then freeze dried. The tobacco may be cut rag, leaf, stems, threshed leaf or leaf cut into wide strips.
Patent GB-1141277-A (GB)
Title: Improvements in or relating to sulphoalkyl carbamate esters
Inventor: EISEMAN FRED SAMUEL
IPC: D06M11/38
Filed: 1967-08-08
Abstract: 1,141,277. SulphoaSkylcarbamate esters. GENERAL ANILINE & FILM CORP. 8 Aug., 1967 [5 Oct., 1966], No. 36368/67. Heading C2C. [Also in Divisions C5 and D1] Novel sulphoalkylcarbamate esters having the formula wherein R is an alkyl of from 1 to 7 carbon atoms, R<SP>1</SP> is hydrogen or an alkyl of from 1 to 3 carbon atoms, R<SP>11</SP> is hydrogen or alkyl of from 1 to 4 carbon atoms, M is hydrogen, sodium, potassium or lithium, n is 0, 1 or 2 and x is an integer of from 1 to 5 are prepared by reacting a chloro substituted formic acid ester of an alkyl ether of ethylene glycol, or of a primary aliphatic alcohol, or of an alkyleneoxide adduct of said alcohol resulting from the reaction of excess phosgene with the corresponding alkyl ether of ethylene glycol, or primary aliphatic alcohol, or alkyleneoxide adduct of said alcohol, with an aqueous solution of an alkali metal salt of a 2-amino-alkane sulphonic acid or of an alkali metal salt of an N-alkylamino-alkane sulphonic acid at a pH of 10À5 to about 11.
Patent GB-1504937-A (GB)
Title: Stud welding gun
IPC: B23K9/20
Filed: 1975-09-04
Abstract: 1504937 Welding by pressure HILTI AG 4 Sept 1975 [30 Sept 1974] 36396/75 Heading B3R A stud welding gun has a tubular studreceiving holder 4 having two or more axially extending slots 7 forming resilient stud-holding fingers therebetween and of such size that the cross-section of the stud holder before slotting in the region of the slots is reduced by at least 12%. Preferably the slots are concave, present sharp finger edges at the inner surface of the holder, and have a width increasing towards the outer surface of the holder.
Patent GB-368339-A (GB)
Title: Improvements in and relating to oil burners
IPC: F23D11/44
Filed: 1930-12-03
Abstract: 368,339. Thermal switches. RITCHIE, A. and GRETNA ENGINEERING CO., Ltd., Eastvale Place, Kelvinhaugh, Glasgow. Dec. 3, 1930, No. 36413. [Class 38 (v).] A thermostat arranged within or adjacent the burners controls two switches, one switch controlling means only allowing the passage of oil when heated to a predetermined temperature by an electric heater encircling or adjacent to the oil tube and the other arranged to cut out and close the heater circuit when the oil temperature exceeds or falls below another predetermined temperature. Fig. 1 shows a heating element b arranged in tubular passages in asbestos or like discs l surrounding an oil pipe a leading to an atomizer c. An expansible rod f inserted in the pipe a so as to leave an annular passage for the coil carries two switches g, h, the switch g being normally closed and the switch h being normally open. On the main switch A being closed current is supplied through the switch g to the heating element b. When a predetermined oil temperature is reached the expansion of the rod f closes the switch h and thereby completes the circuit to an electric motor i driving the fuel pump and air blower and to a transformer n producing sparks for ignition of the fuel at electrodes o, p. If the oil temperature becomes excessive the expansion of the rod f opens the switch g and breaks the heater circuit until normal conditions are restored. Fig. 3 shows a suitable switch-operating device comprising a bar 26a which is turned about a pivot 26 on a bracket 22 by the differential expansion between a rod 20 and tube 21. The bar 26a acts through a pin 27a to turn a lever 25a pivoted on the bracket 22 against the resistance of a spring 28a and thereby turns the U-shaped pivot pin of a spring blade 29a to raise the contact 12 and close the switch h. A further movement of the bar 26a allows the movement of a lever 25 by a spring 28 to lift a spring blade 29 and open the switch g. Specification 360,462, [Group XI], is disclaimed.
Patent GB-1554050-A (GB)
Title: Prostacyclin derivatives
IPC: C07D311/94
Filed: 1977-09-01
Abstract: 5,9-Cyclic ethers of 9-deoxyprostaglandin-F1 alpha -type compounds of the formula <IMAGE> in which the substituents are defined in Patent Claim 1, are prepared. These compounds are obtained by converting a compound of the formula <IMAGE> into a mercury compound of the formula <IMAGE> and subsequently subjecting this latter compound to a reductive removal of mercury, resulting in the formation of the ether. The compounds which are obtained may be used as antiinflammatory agents as well as for inhibiting blood platelet aggregation in vivo or in vitro.
Patent GB-1477040-A (GB)
Title: Recovery process and apparatus
Inventor: GREENFIELD CHARLES
IPC: B01D1/26
Filed: 1974-11-06
Abstract: 1477040 Recovering water and solids from water/solids systems HANOVER RESEARCH CORP 6 Nov 1974 36453/76 Divided out of 1477039 Heading B1B Aqueous slurries and suspensions are dehydrated and the solids recovered by (1) mixing with a relatively non-volatile oil to obtain a mixture which will remain fluid and pumpable after water removal (2) evaporating the water to yield an oil/solids slurry (3) condensing the resulting water vapour as a clean water product (4) separating the major part of the oil from the slurry (5) removing the remaining non-volatile oil by extraction with a relatively low viscosity, volatile, water-immiscible oil and (6) removing the remaining volatile oil from the solids by direct contact with steam. The dehydration of sewage sludge suspensions is described.
Patent GB-522745-A (GB)
Title: Composite crank shaft for internal combustion engines
IPC: F16C3/12
Filed: 1938-12-14
Abstract: 522,745. Crankshafts. BAYERISCHE MOTOREN WERKE AKT.-GES. Dec. 14, 1938, No. 36498. Convention date, Dec 16, 1937. [Class 80 (ii)] In built - up crankshafts for internal - combustion engines, the hollow pins 1 are formed with teeth 4 wholly or partly around their ends to engage corresponding teeth on the cheeks 3, a key 6 being passed through each pair of members and retained by a split ring 5. A bronze bush 2 may be used. Plates 7, 8 close the pin ends.
Patent GB-1273613-A (GB)
Title: A method for obtaining electronic colour correction signals
IPC: H04N9/00
Filed: 1969-07-21
Abstract: 1,273,613. Facsimile reproduction. DR.-ING. RUDOLF HELL. 21 July, 1969 [8 Aug., 1968], No. 36649/69. Heading H4F. Colour-correction signals for compensative masking (grey tone elimination) are formed by submitting primary or secondary partial signals to a non-linear transformation in order to obtain emphasis in a desired portion of the colour space. The primary colour signals R, G, B are subject to logarithmic conversion in stages 1 and partial signals are formed by splitting the trichromatic measured colour signals according to sign in stages 2 and forming difference signals in stages 3 where signals of opposite sign from stages 2 are added. In stages 5 secondary partial signals are derived, e.g. +rd and - vi are formed from partial signal + mg + rd and inverted partial signal +mg+vi. The linear relation between amplitude and colour saturation is distorted, e.g. as shown, for +rd which is fed simultaneously to stages 6, 7 which produce respectively a negative linear characteristic and a logarithmic characteristic. The outputs of these two stages are added in stage 8 which provides a characteristic providing emphasis at a desired intermediate colour value. In order to obtain correction signals in both the white-red and black-red regions, the signal from stage 6 is fed to amplifying stages 9, 10, the first of which is operative only on the occurrence of approximately white colour signals and the second on the occurrence of approximately black colour signals. To this end, the secondary grid of tube 9 is fed with the approximate + w signal from stage 2c, and the secondary grid of tube 10 is fed with - w from the same source. A grid bias resistor 15 ensures that amplifier 10 is inoperative for approximately white colours. A correction signal may be obtained for a saturated colour, e.g. the signal - ye - gn from stage 3b may be distorted in stage 18 to produce a non-linear bl - ye curve (e.g. by means of a diode). According to the shape of this curve, the part - gn may be more or less suppressed or the part -ye strongly emphasized.
Patent GB-1270967-A (GB)
Title: Opaque polyester film
Inventor: TRUBISKY MICHAEL P
IPC: C08L67/02
Filed: 1969-07-22
Abstract: 1,270,967. Opaque polyester film. E.I. DU PONT DE NEMOURS & CO. 22 July, 1969 [23 July, 1968], No. 36729/69. Heading B5B. [Also in Divisions C3 and G2] A substantially opaque oriented linear polyester or copolyester contains 2-12% by weight of polyester of carbon black, preferably lamp black, the carbon black particles having a surface area less than 18 sq. m. per gm. and substantially all the particles having a diameter less than 10 Á. The film produced may have a light absorbance of at least 8 and an adhesion rating of 2 (Gelatin Adhesion Test) and an average water contact angle less than 75 degrees and may show no surface asperities larger than 50 Á in diameter, there being less than 2150 asperities per sq. m. larger than 10 Á. The polyester may have an intrinsic viscosity greater than 0.4 inch 60/40 by weight tetrachloroethane/phenol at 30‹ C. and may be at least 85 mole per cent polyethylene terephthalate which may have a copolyester of 2 to 5 mole per cent diethylene terephthalate and may have blended therein 0.5 to 5% by weight based on the total weight of film of polyethylene oxide. The process for preparing the film may comprise incorporating carbon black into the polymer during or just prior to extrusion, molecularly orienting the extrudate, and flame treating the film by exposing for 0.01 to 0.05 second to a flame of a gaseous mixture of oxygen, nitrogen and paraffinic or olefinic hydrocarbon fuel of fuel equivalence of 0À8 to 1.3, the oxygen ratio of the gaseous mixture being 0À25 to 0.29 by volume. The film may be coated with a photosensitive emulsion, especially gelatino silver chloride emulsion and used as for example film with selfdeveloping cameras.
Patent GB-1103451-A (GB)
Title: Flow retarders for fire tubes of boilers
Inventor: LUCHFORD LAURENCE RICHARD
IPC: F22B37/06
Filed: 1963-09-18
Abstract: 1,103,451. Flow retarders. TRIANCO Ltd. Sept. 14, 1964 [Sept. 18, 1963], No. 36753/63. Heading G3H. [Also in Division F4] A flow retarder to fit in a fire tube of a boiler comprises a rectilineal-sectioned tapering metal body having a plurality of longitudinally extending fins 4, 5 whose outer edges are parallel to the axis of the body, which locate the retarder centrally in a rectilineal fire tube to define a number of gas passages of decreasing cross-sectional area, between the retarder and the tube. The bottom end of the body is closed by a pyramidal end cap 6 either formed integrally with the plates used in the construction of the baffle, or as a detachable cap, and the top end is closed by a metal plate 7, located in position by dimples 8, to which a U-shaped metal handling rod 9 is attached. By this the retarder may be located longitudinally in the tube. The space within the retarder may be filled with slag wool. The fins may extend only part way along the retarder (Figs. 9 and 10).
Patent GB-449188-A (GB)
Title: Improvements in or relating to electrical signalling systems
IPC: H02J13/00
Filed: 1934-12-21
Abstract: 449,188. Distant - control systems. AUTOMATIC ELECTRIC CO., Ltd., Strowger Works, and ROSEBY, P. N., 57, Moscow Drive, Stoneycroft, both in Liverpool. Dec. 21, 1934, No. 36758. [Class 40 (i)] Two different kinds of equipment such as water heaters and street lamps are controlled respectively over the supply mains by signals of two different frequencies transmitted for substantially different periods. As shown, the signals are sent from generators HFG1, 2 over the neutral wire of a three-phase system. The street Lamps are controlled by a frequency of 5000 transmitted for ¢ second, and the responding relay SL is provided with a filter circuit FC. The water heaters are controlled by a frequency of 500 transmitted for 30 seconds, and the responding relay A exercises its control through a timing device. The water heaters WH are normally in circuit, contact I being closed, and when disconnected by a signal are brought into circuit again after a definite period, e.g. an hour, by a local timing arrangement. On operation of relay A, current is fed to a thermostat B which after 30 seconds bends away from the drum G and allows its associated arm F to be moved anticlockwise by gravity or by a spring against a stop. An extension J which normally maintains contact I allows spring K to move against contact H where it is held by a magnet L. A motor C is thus brought into circuit, and the thermostat B and arm F are rotated with the drum G until after a definite period contact I is remade. The timing periods may be different for the various water heaters. Other features of the system are claimed in Specification 449,232, [Group XXXV]. Specifications 431,349, [Group XXXVII], and 435,564 also are referred to.
Patent GB-819540-A (GB)
Title: Improvements in or relating to magnetic powder clutches or brakes
IPC: F16D37/02
Filed: 1956-11-30
Abstract: 819,540. Magnetic dust. ELEKTROMECHANIK G.m.b.H. Nov. 30, 1956 [Dec. 1, 1955], No. 36760/56. Drawings to Specification. Class 38 (2). The torque in a magnetic clutch or brake is transmitted by a powder comprising particles generally ellipsoidal in form, the ratio of their major and minor axes extending up to two. The powder may be formed by abrading the sharp edges from pieces cut from iron wire.
Patent GB-443456-A (GB)
Title: Improvements in waistbands of garments for wear
IPC: A41F9/02
Filed: 1934-12-22
Abstract: 443,456. Wearing - apparel. HILL & CO., Ltd., T. A., and JACKSON, T. R., Newdigate Factory, Russell Street, Notting- ham. Dec. 22, 1934, No. 36776. [Class 141] The waistband of garments, e.g. pants, knickers, drawers, skirts, or the like is formed of inextensible or substantially inextensible material divided transversely at one or more positions, and one or more pieces of elastic is or are connected at or near each of the meeting edges of the division or each division in the band, each elastic piece extending freely over the band at the opposite side of the division, and being connected to the waistband at a suitable distance from the division. As shown, the waistband 2 is divided at the hip portions, and elastic strips 5, 6, are sewn to the meeting edges of each division 4, the strip 5 extending over the outer face of the waistband 2, and the strip 6 over the inner side thereof, each strip 5, 6, being sewn at its opposite end to the waistband at a suitable distance from the division 4. In a modification, the division may be disposed centrally at the front or rear, or at both these positions of the waistband.