baber/WOPTO huggingface dataset:
Patent GB-1436581-A (GB)
Title: Nuclear reactor installations
IPC: G21C11/08
Filed: 1973-08-01
Abstract: 1436581 Nuclear reactors SIEMENS AG 1 Aug 1973 [2 Aug 1972] 36684/73 Heading G6C A nuclear reactor installation comprises a pressure vessel 1 (e.g. of a pressurized light water reactor) surrounded, with clearance, by a concrete biological shield 3, and a plurality of plates 12 disposed in the gap between the vessel and shield to protect the shield 3 against the effects of bursting of the vessel 1 and to provide thermal insulation between the shield and vessel, the plates being displaceable around the vessel 1. The plates 12, which have successively greater thicknesses in a direction towards the shield 3, are arranged in overlapping manner and spaces 22 are maintained therebetween by ribs of ceramic insulating material. Insulation is improved by static air in the spaces. The plates are enclosed by an outer envelope 15 which defines, in conjunction with the adjacent wall of the shield 3, a duct 17 for circulation of a coolant. In one embodiment (Fig. 1, not shown) the plates are suspended from cables (25) extending from arms (24) pivotally mounted (as at 26) on the shield to enable displacement of the plates for providing access to the exterior of the pressure vessel for testing purposes. In another embodiment (Fig. 3, not shown) the plates, or groups thereof, are suspended by hooks (32) from nails (30) supported at the end portions of spaced cantilever arms (28) secured to the shield. The hooks are displaceable along the rails.
Patent GB-1255570-A (GB)
Title: Process for separating a mixture of c5 hydrocarbons into its constituents
Inventor: MUELLER ECKART
IPC: C07C7/10
Filed: 1970-07-29
Abstract: 1,255,570. Separating a mixture of C 5  hydrocarbons. METALLGESELLSCHAFT A.G. 29 July, 1970 [13 Aug., 1969], No. 36771/70. Heading C5E. A process for separating a mixture of C 5  hydrocarbons into its constituents comprising: extracting the feedstock with a selective solvent in a first countercurrent extraction step, separating an overhead fraction from the extract-laden solvent in a first extractive distillation step, paraffins and mono-olefins being obtained as refined products in the first countercurrent extraction step; supplying the bottoms from the first extractive distillation to a second extractive distillation, removing an overhead product containing all the isoprene from the second extractive distillation, separating the cyclopentadiene therefrom and recovering it as a refined product in a subsequent second countercurrent extraction using a purified solvent, the extract-loader solvent from the second extraction being supplied as an extraction solvent to the top of the second extractive distillation and cyclopentadiene being distilled from the bottoms in the second extractive distillation. The purified solvent from the second extraction should be cyclopentadiene-free and may be taken from the bottoms in the cyclopentadiene distillation. Suitable solvents are acetonitrile N-dimethylacetamide, ethanolamine, ethylene diamine DMF, butyrolactone, furfural, morpholine aniline, N-methylpyrrolidone, glycol methyl ether or a mixture thereof, optionally containing water. A paraffin countersolvent may be used in the second countercurrent extraction.
Patent GB-337644-A (GB)
Title: Improvements in or relating to variable speed drives
IPC: F16H3/56
Filed: 1929-11-30
Abstract: 337,644. Sheridan, L. M. Nov. 30, 1929. Variable - speed epicyclic gearing.-A double internallytoothed planet pinion 46 encompasses toothed wheels 30, 31 on the driving and driven shafts 16, 21, and is mounted in a balanced frame 23 which is rotated independently by means of a toothed wheel 38 to vary the speed. The wheel 38 may be driven from the main source of power by variable friction gearing, or by a separate electric. motor, steam turbine, &c.
Patent GB-1519615-A (GB)
Title: High energy radiation detector
IPC: G01T1/164
Filed: 1975-09-09
Abstract: 1519615 Image conversion tubes GENERAL ELECTRIC CO 9 Sept 1975 [25 Sept 1974] 37015/75 Heading H1D [Also in Division H4] A device sensitive to high energy radiation, such as X-rays or gamma rays including a layer 10 of material converting the radiation into light has between the source of radiation and the converting layer an optical reflecting member 12 whose surface facing the converting layer is formed with "corner reflectors", i.e. triangular pyramidal depression with an apical angle of substantially 90 degrees which have the property of reflecting light along directions parallel to the incident light, e.g. from scintillating points O, the pitch L of the depression being less than the thickness d of the converting layer. Light travelling to the left in the Fig. is thus redirected to the right where it can be utilized in a gamma ray camera having an array of photocells (51), Fig. 5, or an electronic image conversion tube, Figs. 6 and 7 (none of the Figs. shown). The reflecting member may be in contact with or spaced from the converting layer and an intervening optical medium can be provided. The reflecting member can be a light metal or metallized glass or plastics material or may be made by suitably deforming a thin sheet of metal.
Patent GB-1013942-A (GB)
Title: Methods of and apparatus for forming bends in sheet material
IPC: B31F1/00
Filed: 1961-10-17
Abstract: 1,013,942. Post forming thermosetting sheet. W. H. FOSTER & SONS Ltd., and D. FOSTER. Oct. 8, 1962 [Oct. 17, 1961], No. 37103/61. Heading B5A. A post forming thermosetting sheet laminate 10 is formed to an L-bend or a U-bend by clamping about a stationary water heated former 13 to the shape of which it is deformed by contact with the flat surface or surfaces respectively of a former or of formers 14a and 14b as these are moved in an arc about former 13. The formed laminate is partly cooled by an air blast or water spray before removal from the formers and is then clamped and immersed in water to set the bend.
Patent GB-1015677-A (GB)
Title: Improvements relating to fastening devices for location in a plate aperture
Inventor: NOBLE COLIN GEOFFERY
IPC: F16B19/10
Filed: 1962-10-01
Abstract: 1,015,677. Mounting terminals. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 1, 1962, No. 37115/62. Heading H2E. [Also in Divisions E2 and F2] A spigot such as an electrical terminal has a neck 3 and is fastened in an aperture in a plate 7 by a deformable bush, e.g. of polytetrafluoroethylene, with an end flange 6 and a body 5 normally of uniform cross-section except for an end chamfer. The bore of the bush flange 6 has a diameter equal to that of the main portion 1, 2 of the spigot and, before fastening, the end 1 is inserted in this bore. The bush body 5 is inserted in the equal-sized plate aperture and the spigot is then pushed into the body bore which has a diameter less than that of the flange bore.
Patent GB-431624-A (GB)
Title: Improvements in or relating to power-operated wrenches
IPC: B25B21/02
Filed: 1934-12-28
Abstract: 431,624. Yielding shaft-couplings ; slipping-clutches. MOSS, E. W., 75, Victoria Street, London.-(Ingersoll-Rand Co. ; 15, Exchange Place, Jersey City, New Jersey, U.S.A.) Dec. 28, 1934, No. 37157. [Class 80 (ii)] [See also Group XXII] In a portable device for screwing-up and unscrewing nuts and screws the tool is driven through a resilient rubber torsion spring and a slipping-clutch so that the energy of the driving motor may be stored in the spring to deliver torsional blows to the tool. The casing of a reversible electric or pneumatic motor has attached thereto a casing 16 containing a reduction gear and provided with radial handles. A sleeve 12 is secured to the casing 16 and carries a bearing 23 for the tool socket 13. Bevelled clutch teeth 26 on the socket engage similar teeth 27 on the end wall 31 of a tubular hammer 21 which is rotated from the motor shaft 20 through a clutch 37 and rubber spring 22. The end portions of the spring are moulded within metal caps 59 having radial teeth 61 engaging recesses in the hammer wall 31 and in a ring 36 pinned to a central spindle 29 which is freely slidable and rotatable within the wall 31 and the socket 13. A further ring 31a has teeth 33 engaging recesses in the rear end of the hammer 21 and is secured thereto by a spring ring 34 so as to support this end of the hammer slidably upon the ring 36. Clutch teeth 39 on the ring 36 are normally held out of engagement with teeth 38 on the shaft 20 by means of a spring 42a located in a recess in the spindle 29 and pressing a plunger 42 against the end of a recess in the shaft, a pin 44 in the spindle engaging a slot 45 in the plunger to limit their relative movements. In operation the machine, with a wrench 48 in the socket 13 and the clutches 25, 37 closed and open respectively, is applied to the work. Axial pressure on the wrench closes the clutch 37, whereupon the wrench is driven to tighten a nut. When the resistance of the nut to turning increases the rubber spring 22 is placed under additional torsion whereby it twists and shortens in length and allows the clutch teeth 26, 27 to slip. As soon as the teeth have passed each other the spring unwinds and the hammer 21 delivers a torsional blow to the wrench, these blows being repeated rapidly to set the nut and being increased in force by the momentum of the hammer and the torsional energy of the spring. When axial pressure on the machine is released the spring 42a opens the clutch 37 and the wrench ceases to rotate. To increase the resilience of the rubber spring 22 it is provided with a number of longitudinal ribs 64, Figs. 3 and 5, joined at their inner ends by a thin cylindrical wall 65, Fig. 2, in which are embedded a number of metallic rings 58 which prevent the spring from binding on the spindle 29 during torsion. The end caps 59 are copper-plated and are treated in a known manner to secure adherence to the rubber.
Patent GB-970696-A (GB)
Title: A method of and apparatus for preventing penetration of secondary air into the charge in a furnace
IPC: F27B1/10
Filed: 1963-09-20
Abstract: 970,696. Preventing admission of air; dust collectors. METALLGESELLSCHAFT A.G. Sept. 20, 1963 [Sept. 20, 1962], No. 37178/63. Headings F4B and F4X. Entry of air through the charging opening 2 of a shaft furnace 1 is prevented by flowing an oxygen poor gas into the furnace below the charging opening. This reduces the risk of explosions in the dustcollecting apparatus 6, and a waste gas fired recuperator 9. The oxygen poor gas may be taken from the flue outlet of the recuperator 9 and delivered to a bustle pipe 13 surrounding the upper end of the furnace. A by-pass 15 between the waste gas outlet pipe and the inert gas delivery pipe 12 enables combustion products from the recuperator 9, which is heated by other fuel while the furnace is not in operation, to be used to purge the dust collector 6. Dampers in the gas mains enable the gas flow to be controlled.
Patent GB-1126610-A (GB)
Title: Adhesive based on epoxide compounds
IPC: C08G59/38
Filed: 1967-08-15
Abstract: 1,126,610. Epoxy resin adhesive. HENKEL & CIE G.m b.H. 15 Aug., 1967 [16 Aug., 1966], No. 37359/67. Heading C3B. A cold setting adhesive comprises (A) 95- 70% of a liquid epoxide compound prepared from dihydric phenols having an epoxide equivalent of 170-300; (B) 5 to 30% of a liquid epoxidized polydiolefine in which the monomers are linked wholly or predominantly in the cis- 1,4 position; and (C) a hardener which is an amine or a polyamide containing free amino groups. (B) is preferably an epoxidized polybutadiene having an epoxide oxygen content of 6 to 15% by wt. and having a viscosity at 50‹ C. of 1500-10,000 centipoises.
Patent GB-523061-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B13/00
Filed: 1938-12-23
Abstract: 523,061. Lenses. TAYLOR, TAYLOR, & HOBSON, Ltd., and WARMISHAM, A. Dec. 23, 1938, No. 37409. [Class 97 (i)] In a photographic objective comprising two compound meniscus components which have facing concave surfaces and are placed between two simple collective components, one or each of the collective components has a refractive index greater than 1.75 and preferably greater than 1.8, and the sum of the numerical values of the curvatures of the front surface of the front dispersive component and of the rear surface of the rear dispersive component lies between 4.25 and 4.85 times the reciprocal of the equivalent focal length of the objective. The objective may have a relative aperture of not less than F/1.5, and the curvatures of the surfaces of the rear collective component may be such that their sum is less than 1.6 times the reciprocal of the equivalent focal length. Specification 426,304, [Group XXIII], describes examples of glass suitable for the collective components. Data for examples of lenses are set out in the Specification.
Patent GB-1440063-A (GB)
Title: 17alpha-esters of 17alpha,21-dihydroxy-20-oxo-steroids
IPC: C07J5/00
Filed: 1972-08-11
Abstract: 1440063 17-Esters of 17α,21-dihydroxy-20- oxo-steroids and the preparation of 20-hydroxy- #<SP>17(20)</SP> - 21 - ol steroids GLAXO LABORATORIES Ltd 10 Aug 1973 [11 Aug 1972] 37655/72 Heading C2U The invention comprises (1) a process for the preparation of 17α-carboxylate or neutral phosphate or carbonate esters of 17 α,21 -dihydroxy- 20-oxo-steroids which comprises reacting a 21- carboxylate or neutral phosphate or carbonate ester of a 17α,21-dihydroxy-20-oxo-steroid with a non-hydroxylic base in an anhydrous aprotic medium to remove a proton selectively from the 17α-OH group without elimination of the 17α-oxygen function and subsequently neutralizing or acidifying the reaction mixture whereby the intermediate product is protonated to produce the desired 17α-ester; (2) the preparation of steroids of the following partial formula in ring D by allowing process (1) to proceed beyond the production of the 17α-ester; and (3) the 17- adamantoate, -pivalate, -cyclohexylcarboxylate, - ethylcarbonate, -morpholinoacetate and -tertbutylacetate of betametharone. Preferred bases are the carbanionoid and metal amide bases such as lithium dialkyl and alkylalkoxy cuprates, lithium alkyl cyano cuprates, alkali metal alkyl cobalts and manganeses, alkyl lithium, alkali metal bis-(alkyl-silyl)amides and N-substituted alkali metal amides. Alcoholate and phenolate bases can also be used, particularly sodium and potassium alkoxides. Unless the reaction temperature and other conditions are suitably adjusted the reaction may proceed further with elimination of the 17α-oxygen function and formation of an enol aldehyde having a side chain of the structure shown in (2) above. In some cases the base may alter the nature of the ester group from that originally present at the 21-position, e.g. the product of the treatment of betamethasone 21-trichloroacetate with lithium dimethyl cuprate is a mixture of 17α-(2<SP>1</SP>,2<SP>1</SP>-dichloropropionate) and the 17 α-(2<SP>1</SP>-chloroisobutyrate). 6α- and 6#-bromo-betamethasones are prepared by direct bromination of betamethasone. 21-Ester starting materials are in general prepared by esterification of the corresponding free 21-ols or by reaction of the corresponding. 21-iodo steroids with the appropriate acids. 11#,17α,21 - Trihydroxy - 16# - methytpregna- 1,4,8(9) - triene - 3,20 - dione is prepared by hydrolysis of the 21-acetate, in turn prepared by dehydrobromination of 21-acetoxy-9α-bromo- 11#,17α - dihydroxy - 16# - methylpregna - 1,4- diene-3,20-dione. 11 - Dehydro - betamethasone 21 - acetate and 21 -valerate are prepared by oxidation of the corresponding 11#-ols. Betamethasone 21 - morpholinoacetate is prepared from the corresponding 21-iodoacetate, in turn prepared from the chloroacetate and NaI. 9α - Fluoro - 16 - methylene - prednisolone 21- valerate is prepared by hydrolysis of 9α fluoro- 16 - methylene - prednisolone 17α,21 - methylorthovalerate, in turn prepared from the free 17α,21-diol and methylorthovalerate.
Patent GB-1022012-A (GB)
Title: Improvements in or relating to fluid control valves
IPC: F16K5/06
Filed: 1963-09-25
Abstract: 1,022,012. Valves. D. N. MANTON. Sept. 4, 1964 [Sept. 25, 1963], No. 37682/63. Heading F2V. A rotary spherical plug valve comprises a tubular valve body 10 having diametrically opposed ports 12 and 14, a pair of clamping plates 34 and 36, one at each end of the body 10, and means, i.e. bolts 40, 42, for urging the plates 34 and 36 into engagement with the body 10, the closure member 44 having diametrically opposed ports 46 and 48 which may be brought into or out of register with the ports 12 and 14 and at least one valve stem 52 or 54 extending radially of the member 44 and passing through an aperture in the plate 34 or 36, and sealing means associated with at least one of the ports in the body 10. The sealing means includes an annular ring 26 of rubber or a synthetic polymeric material, a retaining ring 28 and a reinforcing ring 30. A handle 58 actuates the valve and moves between stops 60. Sealing means may be provided at both the ports of the body 10, in which case the body may be formed as a pair of tubular members, one within the other, the outer member being connected to the supply and delivery pipes and the inner member being provided with the seals. Heating fluid may be circulated through the members 52, 44 and 54.
Patent GB-1359621-A (GB)
Title: Circuit arrangement for controlling a plasma torch
IPC: H05H1/36
Filed: 1972-08-16
Abstract: 1359621 Control circuits for plasma torches MESSER GRIESHEIM GmbH 16 Aug 1972 [16 Aug 1971] 38204/72 Heading H2H A supply system for a plasma arc torch apparatus comprises two D.C. sources, one of which is used to supply a pilot arc and the other the main arc, the main arc source having a bypass circuit connected across its terminals so as to dissipate the energy in the current peaks which occur when the main arc circuit is closed. A supply system for a plasma arc torch 12 comprises two transformers 10, 11, the output of the transformer 10 being rectified by rectifier 21 and connected to the electrode 19 and nozzle 15 of the torch. A H.F. ignition apparatus 41 is provided to start a pilot arc 26 between the electrode 19 and the nozzle 15. The output of transformer 11 is controlled by a transductor 23 and rectified by a rectifier 25 and thereafter connected to the electrode 19 and the workpiece 37 by way of a switch 42 and the operating winding 39 of a relay, the contacts 38 of which are in a circuit 37 which by-passes the main arc 31. After the pilot arc 26 has been struck the switch 42 is closed to energize the main arc circuit. The initial current flow energizes relay winding 39 to close contacts 38 whereupon the energy in the current peak is dissipated in a circuit from terminal 34 by way of the connection 37, nozzle 15, pilot arc 26, electrode 19 and connection 33 to terminal 32. Alternatively the by-pass circuit may be directly across terminals 32, 34 as shown by the circuit 43 (dotted).
Patent GB-1111950-A (GB)
Title: Multipactor switch
IPC: H01J17/04
Filed: 1965-09-19
Abstract: A secondary electron emissive material used in a multipactor switch, e.g. a T-R switch, (see Division H1) is a silver-magnesium alloy consisting of 98.5% silver, 1.3% magnesium and 0.2% impurities, or a copper-beryllium alloy consisting of 98% copper and 2% beryllium.
Patent GB-1023212-A (GB)
Title: Improvements in the treatment of polymers
IPC: C08L63/00
Filed: 1962-10-10
Abstract: An oxymethylenepolymer is stabilized by incorporation therein of an epoxy compound containing at least two epoxy groups in the molecule and is monomeric unless the polymer is a copolymer containing adjacent carbon atoms when the epoxy compound may also be a resin. Specified epoxy compounds are dicyclopentadiene dioxide vinylcyclohexene dioxide, 3,4 - epoxy - 6 - methylcyclohexyl-methyl - 3,4 - 6 - methyl cyclohexane carboxylate, resorcinol diglycidyl ether and epoxidized drying oils.  Phenolic stabilizers may also be present, e.g. diphenylol methane or 2,21-methylene - bis - (4 - methyl - 6 - tertiary butyl phenol).  The polymers may be end capped either by esterification or by etherification.
Patent GB-1387608-A (GB)
Title: Making high purity sodium aluminate and use thereof in making sintered beta-alumina bodies
IPC: C01F7/04
Filed: 1972-08-17
Abstract: 1387608 Alumina ceramics; sodium aluminate GENERAL ELECTRIC CO 17 Aug 1972 [29 Oct 1971] 38480/72 Headings C1A and ClJ Sodium aluminate is made by; (a) reacting at least 99À99% pure metallic aluminium with an aqueous solution of NaOH; (b) removing insoluble material; (c) precipitating the sodium aluminate by decreasing the amount of water, (d) separating the precipitate from the aqueous phase, (e) washing the sodium aluminate with an organic solvent, preferably ethanol, and (f) drying and calcining the aluminate to obtain particulate sodium aluminate which is free of excess Na 2 O or α-Al 2 O 3  and is free of NaOH 1 H 2 O or SiO 2 . The sodium aluminate may be mixed with α-alumina and sintered, e.g. at 1600- 1900 C., to produce sodium #-alumina ceramic bodies. MgO and Y 2 O 3  may be incorporated prior to sintering to give 1-5% and 0À25-5% respectively on the ceramic body. The ceramic bodies may be used as solid electrolytes.
Patent GB-887458-A (GB)
Title: Improvements relating to lead-based solders
IPC: B23K35/26
Filed: 1960-11-10
Abstract: A fine grained solder is produced by casting a melt of the following percentage composition (by weight):- .Sb.4,5 -6 .As.0,3 -0,6 .Sn.0,25-3,5 Cu not more than 0,5 Pb the remainder,  into bar form at a rate of cooling which above the liquidus temperature is at least 20 DEG F/sec and between the liquidus and solidus temperatures is at least 6 DEG F./sec and working the bar, as by rolling or extrusion, to reduce its cross-sectional area to one-quarter or less (preferably one-sixteenth) of it as cast value.  The desired rates of cooling are preferably achieved by casting the melt into a water-cooled copper mould.
Patent GB-1507041-A (GB)
Title: Circuit arrangements for decoding data signals
IPC: H04L25/48
Filed: 1976-09-17
Abstract: 1507041 Data bit code conversion SIEMENS AG 17 Sept 1976 [31 Oct 1975] 38705/76 Heading H4P A circuit for restoring data at E in which each transition (positive or negative) represents a "1" level to data having "1" and "0" levels at H comprises a pulse generator FOR converting the input pulse transitions into narrow pulses at F, a clock TG2 synchronized by the short pulses and two bi-stable circuits Kl and K2. Kl is set by a pulse at a and reset, by the next rising clock flank, to the 0 value at P4 to produce at G a pulse of half clock period. K2 is set to "1" when G is "1" at the rising flank of the clock and is reset to 0 when the rising flank coincides with a 0 at G. As described the data is received at D in a form in which a "1" is alternately represented by a positive and a negative pulse and converted to the form in which a transition represents a "1" by a Schmitt trigger STR having a zero threshold level.
Patent GB-1429320-A (GB)
Title: Method of producing a concrete body having a decorative  surface
IPC: B28B19/00
Filed: 1973-08-16
Abstract: 1429320 Decorative concrete bodies K L BILLGREN 16 Aug 1973 [30 Aug 1972] 38744/73 Heading B5A A concrete body, e.g. a wall, having a decorative surface of exposed ballast material is cast in a mould having a separating screen spaced from the mould walls; the space between it and the front wall is filled with the ballast material and the screen has a mesh size so as to prevent the ballast material from passing into the remainder of the mould cavity, and concrete is then cast into the space between the screen and rear wall so that cement paste therefrom passes through the screen to fill the ballast-receiving space and bind the surface layer ballast material. The surface may be finished, e.g. by sand blasting after dismantling the mould. A reinforcing mesh may be placed in the mould and the screen connected thereto, the screen forming a surface crack reinforcement.