baber/WOPTO huggingface dataset:
Patent GB-150991-A (GB)
Title: Improvements in and relating to hydrogenation apparatus
IPC: C11C3/12
Filed: 1919-05-07
Abstract: 150,991. Dayton Metal Products Co., (Assignees of Midgley, T.). Oct. 5, 1918, [Convention date]. Catalytic apparatus; hydrogenized organic compounds, catalytic production of.-Relates to improvements in apparatus for the continuous catalytic hydrogenation of volatile substances at fairly high temperatures and pressures. The improvements comprise :-(1) a reaction chamber provided with one or more heating devices separately controlled, (2) heat-insulating devices for regulating the dissipation of the heat evolved by the reaction either from the whole chamber or from any part thereof, (3) a return pipe for unconverted hydrogen, in conjunction with condensers for returning non-hydrogenized material to the reaction chamber and for the removal of the hydrogenized material, and (4) a removable cartridge for carrying the catalyst. The apparatus is stated to be specially applicable to the production of cyclohexane from benzene. The vapour of the material to be hydrogenized is mixed with hydrogen in a chamber 13 and introduced through the pipe 12 into the reaction chamber 10 containing the catalyst 28. The products of the reaction escape by the pipe 50 to a condenser 51, unconverted hydrogen being returned to the reaction chamber by the pipe 70. A condenser 71 is fitted to the pipe 70 to prevent any loss of the starting-material. The catalyst is contained in a cartridge 26, provided with a flange which rests on a shelf 25 on the inner wall of the reaction chamber 10. As the top 11 of the reaction chamber is detachable, replacement of the cartridge 26 can readily be effected when the catalytic material becomes spent. Surrounding the reaction chamber are a number of electric heating coils 30, separately controlled by the switches 32. Each coil can be encased by heat-insulating material, constructed in the form of semicylindrical sections 35 hinged together. Any number of heating coils may be employed, in conjunction with any number of heat-insulating sections. The hydrogen is introduced into the mixing chamber 13 from the reservoir 21, the pressure in which is maintained by a pump 22, automatically controlled by the pressure-valve 23. The material to be hydrogenized is forced into the chamber 13 by the pump 16, automatically controlled by the pressure-valve 18, and is vaporized by passage through a heater 17. The hydrogenized material falls from the condenser 51 into a vessel 53 and thence through a tube 54 fitted with a float-operated valve 55 to the tank 56. Some of the product may be diverted into a sampling tube 60 containing a hydrometer 61. A modification of the apparatus is described, in which the catalyst cartridge is withdrawn through the bottom of the reaction chamber, the heating of which is effected by an external steam-coil. Specifications 133,666 and 133,667, [Class 91, Oils &c.], are referred to.
Patent GB-1428204-A (GB)
Title: Methood for adding lead to molten steel in a ladle
IPC: C21C7/00
Filed: 1973-05-25
Abstract: 1428204 Adding lead to steel INLAND STEEL CO and ECHEVARRIA SA 25 May 1973 [25 May 1972] 25177/73 Heading C7D Lead is added to steel by forming a bath of molten steel (11) in a ladle (10), closing the top of the ladle to isolate the ladle interior from the atmosphere, adding lead to the molten steel after the top closing step, stirring the bath with an inert gas (26) during at least part of the lead adding step while maintaining a gaseous atmosphere over the bath during the lead adding and stirring steps and removing gases from the ladle while maintaining the gaseous atmosphere. The lead may be added in pellet form to steel (11) at a temperature greater than that suitable for casting (e.g. 3100‹F) and at which the steel can accomodate a lead content from 0.3-0.4% and the steel subsequently cooled either by reladling or by continuous agitation with inert gas (e.g. argon) to a temperature suitable for casting (e.g. 2800‹F). The steel may be deslagged prior to entry into the ladle or alternatively the lead may be added to a slag free region of the bath surface (40). A super-atmospheric pressure of inert gas may be maintained above the bath and a deoxidizer e.g. aluminium may be added to the bath prior to the addition of the lead. The lead may be added to the bath (11) in Fig.2 concomittant with the stream of molten steel (52) from the small ladle (50) atop the main ladle (10). The resultant bath of molten steel containing lead may be poured or teemed into ingot moulds or the tundish of a continuous casting plant.
Patent GB-186353-A (GB)
Title: Improvements in or relating to means for controlling the carburettors of internal combustion engines
IPC: F02D9/00
Filed: 1921-05-24
Abstract: 186,353. Stromberg Motor Devices Co., (Assignees of Mock, F. C., Gustafson, C. J.. and Chandler, M. E.). June 12, 1920, [Convention date]. Spray carburettors.-The pressure in the induction pipe of an engine particularly for use in aeroplanes is maintained substantially constant at low levels by a bellows 99 enclosed in a casing 97 connected to the induction pipe by the pipe 98. A rod 104 is screwed into the closed end 102 of the bellows, and carries a sleeve 114 connected by linkage 110, 95, 94 to the carburettor throttle and a second sleeve 116, which can be moved by the hand actuated lever 117<a> against the pressure exerted by the bellows and by a spring 117 placed between the two sleeves. The rod 104 enters an adjustable stop 106. To set the apparatus, the lever 117<a> is moved to the left, while the engine is on the ground; the stop is then screwed in until the spring is put under such a pressure that with the engine not running the bellows holds the throttle closed. This pressure is then a measure of the vacuum to be maintained in the induction pipe. At great altitudes complete control of the throttle is effected by the hand-lever 117<a>, while at lower levels the lever modifies the bellows control.
Patent GB-656070-A (GB)
Title: Improvements in safety devices for the breech bolts of automatic firearms
IPC: F41A3/72
Filed: 1948-09-27
Abstract: 656,070. Automatic firearms. CESKA ZBROJOVKA, NARODNI PODNIK. Sept. 27, 1948, No. 25200. Convention date, Sept. 25, 1947. [Class 119] The cocking handle 2 for the breech-bolt 1, by engaging with an abutment 5 formed at the end of a slot in the breech casing, prevents retraction of the breech-bolt 1 when there is no round of ammunition in the breech-chamber. Accidental retraction, as by a jolt, causing the insertion and firing of a round is thus prevented. The presence of a round in the chamber, as illustrated, puts the safety device out of action, for in this case the breech-bolt is prevented by the round from travelling over the distance X and the arm 4 of the pivoted handle cannot reach the abutment.
Patent GB-155938-A (GB)
Title: Improved circular metal tank for motor spirit, oil and other liquids
IPC: B65D8/00
Filed: 1919-10-15
Abstract: 155,938. Bevan, S. P. Oct. 15, 1919. Tanks.-A tank for motor spirit, oil, &c. comprises a circular body a, Fig. 1, having flat sides without projections and provided with a tube d fixed to the sides which acts as a bearing for a rod on which it may be supported. At the upper part, the side pieces are provided with recesses g in which are mounted a filling cap h and outlet cock i. In place of a cock, a combined outlet and vent may be provided comprising a tube j, Fig. 4, closed by a cap l and divided by a partition m with an air conduit n and liquid conduit o, one or more ports p putting the outlet into communication with the interior of the tank. In use, the cup l is removed and the tank turned on its bearing until the liquid flows from the outlet. The tube d is preferably mounted eccentrically so that the outlet always returns to the top, but it may be centrally mounted. Both inlet and out let mav be mounted in the same recess and the tank may be provided with partitions to form compartments for different liquids each with its own inlet and outlet.
Patent GB-172931-A (GB)
Title: Improvements in and relating to centrifugal friction clutches
IPC: F16D43/18
Filed: 1921-09-23
Abstract: 172,931. Holte, H. Dec. 14, 1920, [Convention date]. Clutches, friction.-In centrifugal friction clutches, segmental blocks 7 loosely engage shallow recesses 6 in a rectangular or other plate 4 secured to the driving-shaft 1 and engage a driven drum 5 centrifugally, the plate and drum being sufficiently spaced to allow limited eccentricity of the two shafts. Removable plates 9 on one or both sides of the plate 4 centre the blocks. According to the Specification as open to inspection under Sect. 91 (3) (a), the blocks 7 are preferably of strip metal. This subject-matter does not appear in the Specification as accepted.
Patent GB-1381555-A (GB)
Title: Microcircuit holder
IPC: H01P3/08
Filed: 1972-05-30
Abstract: 1381555 Component assemblies; impedance matching; semi-conductor devices BENDIX CORP 30 May 1972 [25 June 1971] 25296/72 Headings H1R and H1W A microcirouit package comprising a metal base and at least one dielectric wall has connecting leads of uniform thickness with a width reduced where they pass through the dielectric wall. Preferably, the metal of the base and leads is the alloy known under the Registered Trade Mark "Kovar", the dielectric is glass and a metallic cover is provided to complete an hermetic package. The ratio of width of the leads outside and within the wall lies between 1 and 2, the actual ratio being chosen emprically with the aid of some guiding principles in the Specification.
Patent GB-977970-A (GB)
Title: Method of shrinking polyester film
IPC: C08J7/02
Filed: 1961-07-13
Abstract: 977,970. Shrinking polyester films. EASTMAN KODAK CO. July 13, 1961 [July 13, 1960], No. 25379/61. Drawings to Specification. Heading B5B. [Also in Division H1] Linear polyester films of terephthalic acid and ethylene glycol, propylene glycol, butylene glycol or 1,4-cyclohexanedimethanol or substituted (chlorinated) dibasic aromatic acids and glycols with units where R contains a benzene nucleus and R<SP>1</SP> is C 2 -C 8  aliphatic are formed into a desired shape and treated with a shrinking agent in the liquid or vapour phase preferably between 100‹ F. and 320‹ F. The shrinking agent is an organic chemical which has suitable shrinking power which is determined by comparative tests. Exemplified are methylene chloride, chloroform, bromoethane, 1,2 - dibromoethane, 1,1,2,2 - tetrachloroethylene, 2,3 - dichloropropylene, 1,1,2 - trichloroethane, bromoform, 1,1,2,2 - tetrachloroethane, trichloroethylene, dibromomethane, 1,2 - dichloroethane, 1,1,1- trichloroethane, tetrachloromethane 1 chloro- 3 . methylbutane, 1,1,2,2 - tetrabromoethane, 2 - chloro - 3 - methylbutane, 2 - butoxyethanol, pyridine, nitroethane, p - xylene, pdioxane, acetonitrile, isovalerylacetone, nitromethane and bromobenzene.
Patent GB-580919-A (GB)
Title: Improvements in or relating to writing pads
IPC: B43L1/12
Filed: 1944-12-18
Abstract: 580,919. Writing tablets. POLLAK, E. Dec. 18, 1944, No. 25393. [Class 146 (ii)] In a renewable writing tablet of the kind consisting of a layer of wax 3 on a base plate 1, a tissue covering 4, a celluloid top plate 5 and a slide 6 between the tissue and wax which is bent round at its ends to grip the tablet, an additional plate 2 is interposed between the wax and the base plate, and the bent part of the slide is placed between these plates. The plate 2 may be slightly narrower than the base plate 1.
Patent GB-1263611-A (GB)
Title: Gas burner
Inventor: DESTY DENIS HENRY
IPC: F23D14/20
Filed: 1969-05-19
Abstract: 1,263,611. Gas burners. BRITISH PETROLEUM CO. Ltd. 15 April, 1970 [19 May, 1969], No. 25419/69. Heading F4T. A burner for gaseous fuels comprises a porous perforated exit sheet 12, one side of which is adjacent a combustion zone and the other side of which is adjacent a perforated baseplate 13; the plate and sheet are connected so that the perforations or air holes 10 mate, while in the area between the holes the plate and sheet are spaced apart to form fuel passages 14 whose resistance to the flow of fuel is low compared with the flow resistance through the sheet 12. The sheet is connected to the plate 13 by joints 15 along the sides of the passages 14. During the use of the burner, gaseous fuel passes through the passages and out through the exit sheet where it burns with air drawn through the perforations. Preferably the sheet is of metal foam, the burner is less than 10 mm. thick and the perforations account for 20-50% of the total area of the burner adjacent the combustion zone. Reference has been directed by the Comptroller to Specification 1,205,432.
Patent GB-400633-A (GB)
Title: Improvements in the production of artificial lava for use as an aggregate in the production of bituminous concrete or asphalt
IPC: C04B18/02
Filed: 1932-03-21
Abstract: An artificial lava for use as an aggregate in bituminous concrete or asphalt is produced by causing earth or waste materials to travel substantially horizontally up to a region of fusion, and to pass through this region at a greater speed than that of their approach, the fused materials being discharged immediately after their passage through the fusion region.  The rotary furnace described in Specification 398,872 may be used.
Patent GB-993412-A (GB)
Title: Improvements in or relating to the manufacture of sulphur dioxide
Inventor: WILLIAMS JOHN AMES
IPC: C01B17/58
Filed: 1961-07-19
Abstract: A gas turbine is driven by sulphur dioxide produced in the combustion chamber of the turbine, the sulphur dioxide thereby being cooled. The sulphur dioxide may be produced by burning sulphur, pyrites or "waste sludge" (a viscous acid material resulting from the purification of petroleum and lubricating oils by treatment with sulphuric acid).  In the combustion of pyrites, a dust separator is inserted between the combustion chamber and the turbine. The walls of the combustion chamber may be maintained at 300 DEG  C. by heat-exchange with molten sulphur to be burnt.  The sulphur dioxide may be further cooled by passage from the gas turbine through a waste heat boiler. Alternatively or in addition, further cooling may be effected by passing the sulphur dioxide through a heat-exchanger for preheating the oxygen-containing gas for the combustion.  The sulphur dioxide may then be catalytically converted into sulphuric acid directly or via the production of sulphur trioxide.  Prior compression of the oxygen-containing gas may be effected in an axial, centrifugal or displacement type compressor.  The compressor may have two stages. The gas turbine may be of the axial or radial flow type and may have four stages. Corrosion vulnerable surfaces may be of high chromium steel, nickel-chromium-cobalt alloy, or aluminium.
Patent GB-298761-A (GB)
Title: Improvements in or relating to revoluble fire bars for domestic cooking ranges
IPC: F24B13/02
Filed: 1927-09-29
Abstract: 298,761. Ure, G. A. Sept. 29, 1927. Grates.-In a domestic range having revoluble fire-bars the back plate 1 is recessed at 2 to accommodate the intermeshing gear-wheels 3, 4 on the ends of the bars, the gear wheels having bosses 3<1>, 4<1> resting in depressions 8, 9 in the grate frame 10 and bosses 3<2> engaging in depressions 17 in the recessed part 2 of the back plate. Apertures 19 in the bottom of the recesses 8, 9 permit the escape of ashes. Polygonal pintles 13 on the ends of the bars engage corresponding sockets 15, 16 in the gear wheels, the wheels remaining in position when the bars are withdrawn.
Patent GB-654742-A (GB)
Title: Improvements in or relating to electric socket contact elements
Inventor: DEAKIN STANLEY THOMAS
IPC: H01R13/11
Filed: 1948-10-01
Abstract: 654,742. Two-part couplings. BRITISH MECHANICAL PRODUCTIONS, Ltd. Oct. 1, 1948, No. 25699. [Class 38 (i)] [Also in Group XXII] A ramp or cam face is produced at the mouth of a socket contact by tapering the thickness of the material by a swaging or like operation involving flow of the material of the socket. Fig. 4 shows a socket bent up from a forked blank of relatively thick metal as shown in Fig. 1 comprising a shank 2, a cross-piece 3 and two tongues 4. The cross-piece is bent to S-shape so that the two tongues face each other to produce the socket. During the operation of cutting the blank, the tongues are cut to the desired length by chisel-edged tools 10, Fig. 7,. the blank being supported on an anvil 11. Simultaneously the tools displace the material of each tongue to form a sloping face 13 and a ridge 14, the formation of the latter being assisted by a ridge 15 on the anvil. Thus, when the blank is bent up as above, the faces 13 form guides for the plug pin and the ridges 14 ensure good contact. Specification 618,677 is referred to.
Patent GB-627016-A (GB)
Title: Improvements in or relating to work or tool holding fixtures for machine shops
IPC: B23Q3/06
Filed: 1947-09-22
Abstract: 627,016. Machine-tool details; chucks. GUSTAFSON, C. Sept. 22, 1947, No. 25704. Convention date, July 10, 1945. [Class 83 (iii)] A work or tool-holding fixture of the collet chuck type comprises an indexing sleeve 30, a spring-pressed collet sleeve 40, a collet cap 50, and a collet 70, the sleeve 40 which has a conical face 41 engaging a corresponding face of the collet being keyed to the indexing sleeve 30 so as to be movable axially thereof and having screwed engagement with the cap 50 which has a face 48 engaging a corresponding face of the collet and has an annular groove 45 which is engaged by dog point set screws 35 provided in the indexing sleeve 30 so that the cap 50 has only a rotary movement relative to the sleeve 30. The latter is rotatably-supported on a body 10 to which it is secured in predetermined angular position by means of a spring-pressed plunger 80. The chuck is opened by engaging the sleeve 30 by the plunger 80 and then rotating an operating-lever 90 provided on the collet cap 50. After inserting the workpiece or tool into the collet, the lever 90 is rotated in the opposite direction to tighten the collet. The plunger 80 can now be disengaged and the indexing sleeve together with the collet cap, collet sleeve, collet, and workpiece, rotated until it assumes the desired position. The collet can be readily removed and replaced by unscrewing the set-screws 35 and removing the collet cap 50 by means of the lever 90 while the plunger 80 engages the sleeve 30.
Patent GB-801515-A (GB)
Title: Improvements in or relating to air supply systems for aircraft cabins and the like
Inventor: HEBDEN GEOFFREY PATRICK
IPC: G05D23/185
Filed: 1955-09-08
Abstract: 801,515. Air turbines. NORMALAIR, Ltd. Aug. 28, 1956 [Sept. 8, 1955], No. 25724/55. Class 110 (3). [Also in Group XIII] In an air supply system for a pressurized space of an aircraft or other vehicle, some or all of a quantity of air from an air pressure source is cooled by expansion through a turbine d which drives a fuel pump h. The air pressure source may be an engine-driven compressor supplying air by a pipe 3 to heat exchangers a and c in which it is cooled by air leaving the space and by fuel oil, respectively, before passing to the turbine d, the exhaust of which is connected to the space by a pipe 2. The temperature in the pressurized space is controlled by automatically regulated by-pass valves e, f, g. Fuel from the main supply line 7 passes through a jet pump k, the pump h in which the main flow is returned from outlet to inlet through restricted passages n, a restricted orifice o and the heat exchanger c, the outlet of which is connected to the line 7. The pump h, which may have a single- or double-sided centrifugal impeller with clearances from its casing forming the passages n, supplies the nozzle of the pump k which keeps the pressures sufficiently high to avoid cavitation. Fuel may be drawn from and returned to the supply tanks instead of the line 7. Reference has been directed by the Comptroller to Specifccation 768,546.
Patent GB-482426-A (GB)
Title: Improvements in infusers
IPC: B65D81/00
Filed: 1937-09-22
Abstract: 482,426. Infusers; capsules. MILLIQUET, J. Sept. 22, 1937, No. 25751. Convention date, Sept. 24, 1936. [Classes 81 (i) and 129] An infuser for holding a small quantity of tea leaves, lime blossoms, camomile blossoms, or like products, comprises a single piece of metal foil 1 folded along a median axis 4 into two superposed sections 7, 8, one at least of which is dished to receive the substance to be infused. The free edges 10 of the folded sections are secured to each other by folding, goffering, knurling, embossing, or like processes. The dished part is formed with perforations 6.
Patent GB-1491478-A (GB)
Title: Heat exchangers
IPC: F24H9/00
Filed: 1975-06-11
Abstract: 1491478 Heat exchangers BRITISH GAS CORP 11 June 1975 [11 June 1974] 25813/74 Heading F4S A heat exchanger for use in a domestic central heating and hot water boiler comprises a series of pairs of substantially U-shaped channels 1 and 2 arranged in face to face relationship with a divider 3 between each pair to form passageways 12, 13, and each channel having a single end opening 7, 8, whilst the ends of the pairs of passageways are closed by end plates. Each pair is held in spaced relationship with each other by metal cast around a plurality of pairs, of such thickness as to enable slots to be machined therein to form heat exchange fins and holes to be drilled therethrough between each pair of passageways to allow hot gases to pass between them. The respective passageways 12, 13 of adjacent channels are interconnected in series by tubes (13, Fig. 5). In use, domestic hot water flows in the passageways 12 and central heating water flows in the passageways 13.
Patent GB-405384-A (GB)
Title: Improvements in or relating to valve gear of internal combustion engines
IPC: F01L1/12
Filed: 1932-09-16
Abstract: 405,384. Valve gear ; casings. DOUGLAS MOTORS (1932), Ltd., and PULLIN, C. G., Kingswood, Bristol. Sept. 16, 1932, No. 25823 and 25825. [Classes 7 (ii) and 7 (vi).] Overhead valves are actuated from a cam shaft 5 more or less parallel to the cylinder by means of short push-rods, which together with the cams 14 are mounted in a casing 8, and rockers 18 one arm of which engages the valve stem, while the other arm and the spindle on which the rocker is mounted are within the casing 8. The casing is attached to the cylinder head at 9, and is connected to the crank case 6 by a tubular casing 7 enclosing the cam shaft. The cam shaft may be made in detachable sections 11, 5, 13. Oil is pumped from the crank case through a passage 24 formed in the walls thereof, and a passage 25 communicating by a duct 26 with a passage 27 in the part 11 of the cam shaft, through the hollow shaft 5, to passages 28 in the cams, and thence into the casing 8 and back to the crank case, either by a pipe, or, in the case of vertical engines, through the cam-shaft casing 7. The oil pump 21 is driven by gears 23 from the cam shaft, and is surrounded by gauze. Alternatively, the oil may be supplied by gravity from a separate tank, to which the oil is returned from the crank case by a pump.
Patent GB-281825-A (GB)
Title: Improvements in spraying pumps or syringes
IPC: B05B9/04
Filed: 1926-10-16
Abstract: 281,825. Ludford, W. C. G. Oct. 16, 1926. Air vessels; buckets; singleacting bucket pumps. - A spraying pump comprises an outer cylinder a forming an air chamber, an inner cylinder c, a reciprocating valved piston in the cylinder c, a non-return valve c<4> between the two cylinders, and an inlet f to the cylinder c. During the outstroke of the piston, liquid in the cylinder c passes to the front side of the piston through ports d<6>, valve d<5>, and ports d<7>. During the inward stroke, the liquid in front of the piston is forced past the valve c<4> into the outer cylinder, and then through a port a<4> into the delivery pipe g. The outer cylinder and pipe g may be enclosed in a casing h.