baber/WOPTO huggingface dataset:
Patent GB-1218145-A (GB)
Title: Improvements in or relating to data transmission systems
IPC: H04L1/16
Filed: 1969-03-28
Abstract: 1,218,145. Digital transmission systems; automatic gain control. SIEMENS A.G. 28 March, 1969 [29 March, 1968], No. 16353/69. Headings H4P and H4R. In a block data transmission system in which errors are corrected by requesting retransmission of faulty blocks, a switching signal is sent over a supervisory channel prior to the transmission of each block to switch the receiver terminal to the receiving state. When the transmitter terminal transmits a block via a control unit to the data channel it is preceded by a tag signal (e.g. continuous stop) on the data channel and a switching signal on the supervisory channel. The control unit at the receiver switches in the receiver terminal on detection of the switching signal. The tag signal has sufficient duration that it is present when switching has been accomplished and can then adjust the receiver a.g.c. The receiver terminal is switched out at the end of each block and the a.g.c. is clamped at its current level.
Patent GB-560612-A (GB)
Title: Means for safeguarding water or liquid service pipes
IPC: F16L53/00
Filed: 1942-11-19
Abstract: 560,612. Pressure relieving devices. CROMPTON, J., and HARGREAVES, W. Nov. 19, 1942, No. 16364. [Class 135] An offset a from a liquid service pipe is closed by a weak disc c held in place by a cap b which has a small outlet aperture b<1>.
Patent GB-797917-A (GB)
Title: Improvements in or relating to a photographic camera having exchangeable lenses
IPC: G03B7/00
Filed: 1956-05-28
Abstract: 797,917. Photographic cameras, focusing lens mounts. DECKEL, H., and DECKEL, F. W. May 28, 1956 [June 1, 1955], No. 16404/56. Classes 97(1) and 98(1) In a photographic camera in which the objective lens and diaphragm are interchangeable and there is a releasable coupling between the shutter speed adjusting member and the diaphragm aperture adjusting member, in order to prevent the objective from being removed before the coupling is released, the objective is locked in position by a locking' member and the release of the objective lock releases. the coupling. Preferably, an uncoupling ring 120 displaces a coupling ring 60 against the action of compression springs 64 which normally ensure that the coupling ring 60, which drives the diaphragm ring 52 by arm 54, is engaged with the shutter speed adjusting ring 74 by teeth 70 entering notches 72 in the latter. As shown, the detachable lens mount 30 is secured by a bayonet joint 26, 28 and locked against rotation by projection 108 on the end of a pivoted lever 102 entering a notch 110. A bevelled edge 114 of lever 102 engages the conical end of an axially movable pin 118 so that, on depressing the end 112 of the lever, pin 118 is moved forwardly carrying t'he uncoupling ring 120 into effect. The lens mount is simultaneously freed so that the bayonet joint can be undone. The shutter casing 10 is permanently attached to the camera by bayonet mounting ring 18 and the shutter speed adjusting member 12 is connected to adjusting ring 74 by arm 78. Lens elements 33a, b and c are movable axially, without rotation, for focusing, by rotatable ring 34 in screw-threaded engagement with barrel 36. Screw 42 rides in annular groove 46 and is carried along axial slot 44 on rotating ring 34. In another form, not shown, pin 118 and uncoupling ring 120 are retained on the camera when the objective is removed. Specifications 744,962 and 769,070 are referred to.
Patent GB-186118-A (GB)
Title: Improvements in lead alloys
IPC: C22C11/08
Filed: 1921-06-15
Abstract: 186,118. Thompson, W. P., (Soc. Thoumyre Fils). June 15, 1921. Alloys.-A lead alloy consists of 100 parts of lead and 5-10 parts of antimony and an iron alloy such as ferro-manganese, ferro-aluminium, ferro-nickel, ferro-vanadium, or ferro-tungsten. The antimony and iron are preferably in the ratio of between 9 to 1 and 8 to 2.
Patent GB-152082-A (GB)
Title: Improvements relating to heat-insulated containers
IPC: A47J41/00
Filed: 1919-07-02
Abstract: 152,082. Calderwood, W. S. July 2, 1919. Cold and heat retaining vessels. - A container for preserving articles of food, ice-cream, or the like comprises an outer metal casing 1, a liner 2 of glass or like material, with an interposed layer 3 of insulating material such as asbestos, cork, or slagwool, and a screwed cover 4 lined with insulating material 3 ccvered by a layer 5 of material such as cork.
Patent GB-109162-A (GB)
Title: Improvements in and relating to the Production of Yarns intended for the Manufacture of Astrakhan and other Curled Pile Fabrics.
Inventor: MICKLETHWAITE BENJAMIN DISRAEL
IPC: D01H13/26
Filed: 1916-11-21
Abstract: 109,162. Micklethwaite, B. D., Senior, F. H., and England, J. Nov. 21, 1916. Yarns.-In the production of yarns intended for the manufacture of astrachan or other curled pile fabrics, rotary frames 16, carrying bobbins 23 and combined with tubes 15, are mounted in bearings on a frame 1 and are rotated by a belt 8 operated from a main shaft 2 with fast and loose pulleys. The yarns to be curled are drawn from the bobbins 23, whereon they are wound side by side, passed in two sets through guides 27 over pins 28 and through the tube 15 to rollers 37. The rollers are driven at a speed related to the speed of the frames from the shaft 2 through a belt 48, gearing 49, 43, shaft 40, and worm gearing 41, 42. The rollers are supported in extensions 31, 32 of the frame 1, and the pressure between them is adjusted by screws 38 and springs. A reciprocating guidebar 53 is employed to prevent grooving. The sets of yarn are kept apart, and the twist is prevented from running up into the tube 15 by a pivoted dividing-key 29. The bobbin 23 is supported between a pivoted bar 17 and a movable bar 18 guided by slots in the frame and controlled by springs 21 surrounding pins 20, which pass through the ends of the frame &c. through holes in a cross-bar 13 on the end of a second tube 10. The bobbin is braked by a spring-pressed detent 25 acting on a ratchet 24 against which the bobbin in pressed. A number of units can all be driven by a single belt. The curled and fixed yarn can be opened in the same machine by transferring the rollers 37 and their appurtenances and driving- means to the other end of the frame and supporting a bobbin of such yarn in the frame 16 and passing the ends over the pins 20 and through the tube 10. The extensions 31, 32 of the frame are made detachable for this purpose, and the necessary bolt-holes are provided in the frame 1. The reverse action may be obtained bv crossing the belt.
Patent GB-729466-A (GB)
Title: Composite structural members for floors, roofs and walls
IPC: E04C1/40
Filed: 1952-07-02
Abstract: 729,466. Beams. CLARKE, T. F. W. July 1, 1953 [July 2, 1952], No. 16704/52. Class 20 (4). A composite beam made of precast reinforced concrete in combination with other materials and adapted to be laid side-by-side with similar members on walls, or other end bearings, to. form load-bearing floors, or roofs, or to be erected vertically to form walls, comprises a dense concrete core 1 reinforced with steel wires, or rods, 2 and a light steel mesh 3, a lightweight concrete layer 4 bonded to the core during manufacture to serve as an insulating floor, or roof, screed to which the floor or roof finishes may be nailed or otherwise fixed, and a building board, or lathing 5, bonded, or mechanically keyed, to the concrete core as it is formed, to serve as a soffit or ceiling. Transverse holes 6 are formed in the beams to facilitate lifting and to register with one another when the beams are laid side-by-side, and form conduits for service pipes &c. The sides 7 may be corrugated so that the joints between adjacent members may be grouted, or caulked. The layer 4, and the lath 5 may have additional floor, ceiling, roof, or wall finishes after being fixed. In alternative  constructions the core may be formed of fibrous concrete with light reinforcement and the layer 4 may be composed of granolithic concrete, or composition, to provide a preformed surface.
Patent GB-753934-A (GB)
Title: Improvements in or relating to catalyst for treating hydrocarbons
IPC: C10G35/06
Filed: 1954-06-08
Abstract: Petroleum hydrocarbons are desulphurized or otherwise treated in the presence of a cobalt molybdate on alumina catalyst conditioned in the presence of free oxygen at 1250-1500 DEG  F. for 12-36 hours. Temperatures of 650-825 DEG  F. and pressures of 0-1000 p.s.i.g. may generally be used, and the feed hydrocarbons specified boil in the ranges 100-550 DEG  F. and 400-1000 DEG  F. and in the lubricating oil range.  For desulphurizing gas and lubricating oils the preferred temperatures and pressures are 675-765 DEG  F. and 400-750 p.s.i.g. Hydrogen or naphthenes may be present for desulphurizing; hydrogenation is also referred to.  For example (1) a West Texas gas oil containing 1.1 weight per cent sulphur is passed over a catalyst at 765 DEG  F. and 400 p.s.i.g. together with 6500 cu. ft. of hydrogen/barrel of oil to give products containing 0.02-0.16 per cent of sulphur, 3.5-13 per cent of said products distilling off at 430 DEG  F.; (2) a 1000 S.S.U. (at 100 DEG  F.) Coastal distillate containing 0.25 per cent sulphur was hydrofined at 700 DEG  F. and 750 p.s.i.g. to give products containing 0.10-0.13 per cent of sulphur of improved colour characteristics. Specifications 737,359 and 743,508, [both in Group III], are referred to.ALSO:A cobalt molybdate on alumina catalyst is conditioned before use or after regeneration by contacting with a free oxygencontaining gas such as dry air for 12-36, preferably 24 hours at 1250-1500 DEG F., preferably 1400 DEG F.  A preferred catalyst comprises 5-25, better 15 per cent by weight of cobalt molybdate, and is supported on gamma alumina derived from bayerite or from boehmite, which latter may be prepared from an aluminium alcohalate as described in Specifications 737,359 and 743,508. Silica may also be present in the catalyst to the extent of 2-6 per cent by weight.  Cobalt molybdate may be formed in situ upon the alumina support by mixing cobalt and molybdenum salts (e.g. cobalt nitrate or acetate and ammonium molybdate or molybdenum trioxide), with gamma alumina or boehmite and subsequently heating to dehydrate the catalyst and if necessary convert the boehmite to gamma alumina.  Prior to conditioning at 1250-1500 DEG F. the catalyst may if desired be heated at 950-1200 DEG F. for 4-12 hours.  The catalyst may be used in the treatment of hydrocarbons with hydrogen at 650-825 DEG F., afterwards being regenerated e.g. with air-inert gas mixtures containing initially 5 per cent and ultimately 100 per cent of air, corresponding temperatures being 650-825 DEG F. rising to 900-1000 DEG F.
Patent GB-661078-A (GB)
Title: Improvements in or relating to gas turbine power plants
IPC: F02C7/06
Filed: 1949-06-24
Abstract: 661,078. Gas turbine plant. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. June 24, 1949 [July 27, 1948], No. 16812/49. Class 110(iii) An axial flow compressor and gas turbine rotor assembly is supported by two bearings only, a forward bearing 27 which takes both thrust and radial loading and a rear bearing 30 which takes radial load. The compressor rotor is built up of discs 34 drivingly united by crowns of teeth 35 and held together by a central bolt 39. The end disc 33 is secured to an end piece 37 formed with a bearing trunnion 42. The turbine rotor comprises two discs 22 bolted together at meeting flanges 22a. The rotors are joined by a tubular part 23 of the same diameter as the crowns of teeth. It is bolted, upstream, to the last compressor rotor and an end disc 38 and, downstream, to a flange 48 on the turbine rotor. Both bearings are spherically mounted. Both bearings are supported from the outer shell 11, the bearing 27 by struts 28 and the bearing 30 by struts 31.
Patent GB-1263302-A (GB)
Title: Improvements in and relating to calcining of limestone
Inventor: HALL RICHARD TERRY
IPC: C04B2/10
Filed: 1969-03-31
Abstract: 1,263,302. Rotary hearth furnaces. INTERNATIONAL PROCESSES Ltd. 31 March, 1969 [5 April, 1968], No. 16815/69. Heading F4B. [Also in Division C1] In a rotary hearth furnace in which limestone is calcined substantially as disclosed in Specification 1,081,079, conduits 112 disposed across the hearth 14 near the discharge conveyer 60 direct sulphur gases via conduit 118, manifold 116 and a series of conduits 120 to the zone in the preheating tower 94, where the incoming limestone is preheated indirectly in vertical tubes 96. The sulphur gases are evolved in the hottest stages (2000-2200‹ F.) of the reaction and withdrawal of these gases in the direction of travel of the grate reduces the sulphur content of the lime. Exhaust gases from burners spaced along the  furnace are delivered by conduits 110 to the preheater space 98 where direct heat exchange takes place with the incoming limestone.
Patent GB-516766-A (GB)
Title: Improvements in and relating to aluminium base alloys
IPC: C22C21/10
Filed: 1938-06-07
Abstract: 516,766. Alloys ; annealing. BRITISH ALUMINIUM CO., Ltd., and DYSON, H. G. June 7, 1938, Nos. 16839/38 and 16675/39. [Classes 72 and 82 (i)] Aluminium alloys contain up to 5.5 per cent. of zinc and up to 2.75 per cent. of magnesium, the sum of the zinc and magnesium being at least 4.5 per cent. and the zinc content being 1.9-5 times the magnesium content. The alloys may be heated to 300-500‹C. and cooled quickly or slowly, and this may be followed by heating to 100-200‹C. or by ageing atroom temperature.
Patent GB-165401-A (GB)
Title: Improvements in or relating to mop attachments for brooms
IPC: A47L13/44
Filed: 1921-06-20
Abstract: 165,401. Glenn, W. H. June 26, 1920, [Convention date]. Mops; c l o t h s stretched o v e r backings.-A mop attachment for brooms comprises a body portion, preferably of heavy fabric, adapted to be folded to form front and rear portions, the front portion 8 having an opening 10 to receive the handle of the broom, the rear portion 9 being provided with a pair of attaching strips 12 adapted to be tied around the broom handle. Mop elements 13, consisting preferably of strings arranged vertically of the body portion, are attached thereto by parallel strips 14 secured by stitching. One of the strips 15 is made of sufficient length to extend round the lower part of the broom the ends' being adapted to be tied together.
Patent GB-453298-A (GB)
Title: Improvements in or relating to metal-clad draw-out electric switchgear
IPC: H02B11/04
Filed: 1935-06-12
Abstract: 453,298. Switchgear structures. REYROLLE & CO., Ltd., A., Hebburnon-Tyne, COATES, F., Cranlea, Whitburn Road, Cleadon, Co. Durham, and CHRISTIE, J., 4, Sidecliff Road, Sunderland. June 12, 1935, No. 16915. [Class 38 (v)] In order to prevent lowering of the flashover value of an orifice insulator in metalclad, draw-out type gear, due to the accumulation of dirt or moisture on its surface or to ionization of stagnant air therein, means are provided whereby a current of clean, dry air is caused to flow through the insulator around the insulated conductor when the conductor is in its normal operative position within the insulator. The orifice insulators B2, C<2> mounted on the bases of oil or compoundfilled chambers B, C, normally house the insulating bushings D<1>, E<2> of a verticallywithdrawable circuit-breaker A, the bushings having collars D<2>, E<2> closing the lower ends of the insulators. The insulator bases have outlets B<4>, C<4> to the atmosphere and inlet passages B<3>, C<3> communicating with a pipe F into which air, filtered at G<1>, is sucked by a motor-driven fan G. The air is dried by silica gel or other hygroscopic material in a vessel H, and a hair hygrometer or other electric alarm J stops the fan if the air has too high a moisture content. The alarm J or a clock-control acting at definite intervals may serve to change over to a second vessel H, and connect the first vessel to a separate supply of heated air to dry its contents. In the isolating position of the gear, the doors closing the mouths of the insulators B<2>, B<3> are relied on to keep out dust and moisture.
Patent GB-274270-A (GB)
Title: Improvements in screens of the rotary type for separating various sizes of granular material such as ore, coal and the like
IPC: B07B1/18
Filed: 1926-07-06
Abstract: 274,270. Dunsmore, M. C., and Ritchie, D. W. July 6, 1926. Rotary sieves.-Apparatus for screening granular material such as ore and coal comprises inner and outer rotary screens 1, 2 driven at equal peripheral speeds by a toothed pinion 7 gearing with internally and externally toothed bands of which the Ditch line is the same as the circumference of the screens to which they are secured. Preferably the axes of the screens are offset from each other, and the screens are supported on pairs of rollers 6, 4.
Patent GB-809398-A (GB)
Title: Tamper-proof caps for bottles and other receptacles
IPC: B65D41/34
Filed: 1957-05-28
Abstract: 809,398. Bottle &c. closure caps. FAPEX TRUST REG. May 28, 1957 [June 5, 1956 ; Oct, 8, 1956], No. 16928/57. Class 125(3). A tamper-proof screw cap 1 for bottles, &c. has a collar 2 provided with internal teeth 7 which cooperate with teeth 8 on the bottle neck, passing over teeth 8 in ratchet fashion when the cap is initially screwed on but attempts to unscrew the cap cause shearing along areas of weakness 11. A ply portion 5 enters the mouth of the bottle and the external surface of the cap has ribs 6. In a modification, Fig. 6 the collar 2 has teeth to mesh with fair teeth 8 on the bottle neck and is integral with the body at points 11 and by means of a short vertical rib 13 the collar itself tearing at 15 when the cap is unscrewed. In a further modification, Fig. 8, collar 2<SP>1</SP> is connected to the cap body by a fastening 16 and teeth 7 on the cap engage teeth 19 on the collar. In a still further modification, Fig. 10, the collar 2 is only fixed to the cap by the lower ends of ribs 6 and has internal ribs 23 which engage with ribs 24 on the bottle neck.
Patent GB-1308340-A (GB)
Title: Production of oxirane compounds
IPC: C07B61/00
Filed: 1970-04-09
Abstract: 1308340 Production of oxiranes HALCON INTERNATIONAL Inc 9 April 1970 [9 April 1969] 16935/70 Heading C2C Oxirane compounds are produced by a process comprising the steps of (a) molecular oxygen oxidation of a hydrocarbon in the liquid phase to produce an organic hydroperoxide and (b) reacting the hydroperoxide with an olefinically unsaturated compound in the liquid phase in the presence of an epoxidation catalyst, wherein citric acid is incorporated in reaction medium. Suitable hydrocarbons are isobutane, 2-methyl butane, 2- and 3-methyl pentane, ethylbenzene, cumene and cyclohexane. Suitable olefinically unsaturated compounds are propene, n-butene, isobutene, the methyl pentenes, butadiene, styrene, cyclohexene, allyl chloride, allyl alcohol, methyl vinyl ketone, diallyl ether, methyl oleate and methyl methacrylate. Suitable epoxidation catalysts are molybdenum, tungsten, titanium, vanadium and selenium compounds. A preferred embodiment of the invention is described with reference to Fig. 3 (not shown).
Patent GB-301402-A (GB)
Title: Improvements in the manufacture and production of unsaturated aliphatic hydrocarbons
IPC: C07C5/32
Filed: 1927-06-27
Abstract: 301,402. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). June 27, 1927. Dehydrated organic compounds, catalytic production of.-Unsaturated aliphatic hydrocarbons having the same number of carbon atoms as the initial material are made by treating hydrocarbons or mixtures of hydrocarbons of low or medium boiling point at raised temperature with catalysts consisting substantially of active charcoal. Various kinds of active charcoal are suitable, such as wood charcoal prepared with the acid of zinc chloride; brown-coal coke activated with steam, or active charcoal made from lignite rich in humus; or masses containing active charcoal may be used, such as charcoal impregnated with metals or their compounds, or masses made from metal compounds of organic acids such as iron or zinc humate. When " multiply unsaturated " hydrocarbons are to be produced, the process may be operated in several stages. Other gases or vapours may be passed over the contact mass together with the hydrocarbon treated, and normal, increased, or decreased, pressure may be employed. The process may be applied to hydrocarbons such as are obtained by the destructive hydrogenation of coal, carbonaceous substances, mineral oils or their products. The products, especially the multiply unsaturated hydrocarbons may be polymerized into products similar to rubber. In an example the vapour of pentane is passed at. 450-500‹ C. over active charcoal prepared by treating brown-coal coke with steam at 800-900‹ C. The product obtained on cooling contains much amylene. Specifications 290,060, [Class 32, Distilling &c.]; 293,887, and 293,906 are referred to.
Patent GB-798477-A (GB)
Title: Improvements in and relating to centrifugal compressors
Inventor: HUITSON ROBERT ROSS
IPC: F04D25/06
Filed: 1955-06-14
Abstract: 798,477. Centrifugal compressors. BRITISH THOMSON-HOUSTON CO., Ltd. June 11, 1956 [June 14, 1955; Dec. 23, 1955], Nos. 17138/55 and 36900/55. Class 110 (1). A plant for extracting a gaseous medium, as from a steam condenser, comprises a number of centrifugal compressors, each directly driven by an alternating current electric motor, and one or several frequency changer or alternator sets to supply current to the motors at a frequency or frequencies substantially higher than conventional power frequency to produce a motor speed as required for operation at favourable efficiency of each of the compressors. Fig. 1 shows a two-stage centrifugal compressor driven by a high-frequency alternating current motor 2. The casing 13 is of one-piece construction, the impellers, diffusers and interstage diaphragm being arranged for endwise assembly. Air admitted through a valve 20 circulates through the motor and enters the compressor inlet past a shaft gland 21. The motor is surrounded by a cooling water-jacket 8. A lubricant.pump 17 is driven through gearing 18. The plant shown in Fig. 3 comprises six such compressors mounted on a common baseplate, the two low-pressure compressors 23 being connected in parallel, and the remaining compressors being connected in series. Intercoolers 24, an inlet 25 with a butterfly valve, and a discharge 27 with a non-return valve are provided in the base-plate. All the motors are supplied at the same high frequency. Connections for by-passing any compressor becoming faulty may be provided in the base-plate. Fig. 5 shows a plant in which the high-pressure compressors 103, 104 are supported by the lowpressure compressors 101, 102. Intercoolers 105, 106 and 107 and a curved duct 108 are provided. The outlet 116 is adjacent the inlet 115 and has a non-return valve 117. Preferably, the supply frequency of the motors driving the compressors 103, 104 is higher, at say 275 cycles per second, than the supply frequency of the motors driving the compressors 101, 102, which may be 200 cycles per second.
Patent GB-255078-A (GB)
Title: Improvements in processes of manufacturing chromates and manganates
IPC: C01G37/14
Filed: 1926-07-08
Abstract: 255,078. Compagnie GÚnÚrale des Produits Chimiques de Louvres, and Pipereaut, P. July 8, 1925, [Convention date]. Electrolytic furnaces.-In the manufacture of chromates and manganates by heating in a pot a mixture of a powdered alloy of iron with chromium or manganese, when the reaction is about to be finished an anode comprising a box formed of angle iron covered with gauze and filled with the alloy is introduced into the molten mass, the pot being made the cathode. The box is rotated and the anode is rapidly dissolved, enriching the molten mass in chromate.