baber/WOPTO huggingface dataset:
Patent GB-790399-A (GB)
Title: Improvements in or relating to process for polymerizing olefins
IPC: C08F4/70
Filed: 1956-05-16
Abstract: Ethylene is polymerized by contacting it with a catalyst formed by mixing a compound of a metal of group IVa, Va, VIa and VIII of Mendeleiff's Periodic Table or manganese, with an organometallic compound of a metal from the group consisting of alkali metals, alkaline earth metals, zinc, earth metals and the rare earth metals, in the presence of a haloalkane containing at least one halogen having an atomic weight of from 35 to 80.  Specified compounds of the metals are titanium and zirconium tetrachloride, manganous, nickelous, ferrous and ferric chloride, tetrabutyl titanate, zirconium acetylacetonate, vanadium oxyacetylacetonate and chromium acetoacetonate, while specified organometallic compounds are butyl lithium, amylsodium, phenylsodium, dimethyl or diethyl magnesium, diethylzine, butylmagnesium chloride, phenylmagnesium bromide, triethyl tripropyl-, triisobutyl-, trioctyl- or tridodecyl-, aluminium, dimethyl aluminium chloride, diethylaluminium chloride or bromide, ethyl aluminium dichloride, aluminium sesquichloride, dipropyl or diisobutyl aluminium fluoride, diethyl or diisobutyl aluminium hydride, ethyl aluminium dihydride, sodium aluminium tetraethyl and lithium aluminium tetraoctyl.  Specified haloalkanes are carbon tetrachloride or tetrabromide, trifluorobromo- or chloro-methane, trichlorobromo or tribromo chloromethane, dichlorodifluoro-, dibromodifluoro- or dichlorodibromo-methane, chloroform, bromoform, methylene chloride or bromide, 1,1- or 1,2-dichloro- or dibromoethane, 1,11,2- or symmetrical tetrachloro- or tetrabromo-ethanes, hexachloro- or hexabromo-ethane, 1,1,22-tetrachloro-1,2-difluoroethane, perchloro propane or butane, n-butyl or isobutyl bromide or chloride, tertiary-butyl chloride or bromide, and tertiary amyl, n-hexyl or tertiary octyl bromide.  The polymerization may take place with or without an inert diluent, e.g. hexane, heptane, isooctane, cyclohexane, benzene, toluene, xylene, chlorobenzenes and chloronaphthalenes, by batch or continous operation, and in an atmosphere of nitrogen.  The haloalkene may be added in one operation or continuously.  The polymerization may be stopped by adding methanol, anhydrous ethanol or butanol.
Patent GB-515254-A (GB)
Title: Improved process for the manufacture of steel
IPC: C21C7/00
Filed: 1938-05-23
Abstract: 515,254. Steel. MEHTA, F. P. May 23, 1938, No. 15294. Convention date, June 4, 1937. [Class 72] In the manufacture of steel by a duplex process, low carbon metal and high carbon metal are dephosphorized separately, mixed in a tilting open hearth furnace and the carbon worked down to the desired extent in the furnace. The dephosphorization is carried out by filtration through liquid basic dephosphorizing slag preferably as described in Specification 509,306. In the production of metal containing a 1“-3 per cent. of carbon, metal is blown in an acid converter until the carbon &c. are less than that required in the final product and then dephosphorized, the high carbon metal being blown until practically all the silicon and manganese is removed and 1¥-3¢ per cent. of carbon left and filtered as described above. The two charges are then mixed in an open hearth furnace and worked as described above. To produce alloy steels, additions of the usual alloying elements such as ferro-manganese or ferrochrome are made before tapping the charge.
Patent GB-355699-A (GB)
Title: Method and apparatus for treating and handling feed water for locomotive boilers
IPC: F22D1/42
Filed: 1930-05-19
Abstract: 355,699. Feedwater supply systems. WILSON, L. F., 647, Buena Avenue, Chicago, U.S.A. May 19, 1930, No. 15349. [Classes 64 (i) and 123 (ii).] Feedwater from the tender tank 8 of a locomotive is heated to a predetermined temperature and chemically treated in a separate compartment 11, the heating being effected by exhaust steam which is supplemented when necessary by live steam. The exhaust steam pipe 12 is connected to a vertical loop 15 mounted on the tender and supplying an injector 18, which draws water from the tank 8 through a strainer box 20 and pipe 19 and delivers it through to the top of the compartment 11 through a loop 16. The water level in the compartment is maintained constant by a float 23 operating a valve 22 in the exhaust steam pipe. The temperature of the water in the compartment is regulated by a thermostat 35 operating a valve 34 in a branch pipe 33 opening into the exhaust steam pipe above the valve 22. Steam is discharged from the compartment into the tank through a relief valve 37. A chemical container 27 is connected with strainer box and with the water supply pipe 19 to deliver a solution with the water entering the compartment. Sludge is withdrawn from the compartment through a cock 20. Hot water is withdrawn through a pipe 38 by the feed pump 41, which is driven by a turbine supplied with boiler steam through a pipe 43 having a branch 45 supplying supplementary steam into the water in the compartment under the control of a thermostatically operated valve 46. In a modification, water is withdrawn from the tender tank and delivered into the top of the separate compartment by a rotary pump, and the exhaust steam enters the compartment with the water through a mixing nozzle. The chemical container is so connected as to form a byepass in the pipe through which water is delivered to the compartment.
Patent GB-390347-A (GB)
Title: Arrangement for producing helical flow of gases, steam and liquids
IPC: F22B37/18
Filed: 1932-05-30
Abstract: 390,347. Pipes. KUHLMANN, A., 73, Holtenauerstrasse, Kiel, Germany. May 30, 1932, No. 15355. [Class 99 (ii).] A pipe for producing a helical flow of fluids is provided with a helix a in contact with the inner surface of the pipe, and having a height substantially smaller than the radius of the pipe and a pitch greater than the pipe's internal diameter. A conical deflector e may be provided at the end of the helix to prevent the flow of the fluid from being disturbed by the end of a steam tube d contained in the pipe. Specifications 23993/92, [Class 99, Pipes &c.], and 2650/97, [Class 123, Steam generators], are referred to.
Patent GB-1063728-A (GB)
Title: Amide derivatives
Inventor: MORLEY JOHN SELWYN
IPC: C07K5/117
Filed: 1965-04-12
Abstract: Peptides of the formula <FORM:1063728/C2/1> and the salts thereof wherein, when Z is -NH, X is H or an acyl radical, and when Z is a direct link between X and the adjacent C atom, X is H, and wherein m1 is 0 or 1-3, m2 is 1-4, P is H, an alkylthio or aralkylthio group, R1 and R2, which may be the same or different, are H or amino, alkyl or aryl radicals or R1 and R2 may be joined together with the adjacent N-atom to form a heterocyclic radical, and where the indole nucleus may be optionally substituted by one or more alkyl groups, provided that when the indole nucleus is unsubstituted and Z is NH and m1 is 1 and m2 is 2 and R1 and R2 are both H, then P is not methylthio are prepared either by reacting a compound of the formula <FORM:1063728/C2/2> wherein Q is a radical which together with the adjacent acyl radical forms an activated acid function, or a protected derivative thereof with a tripeptide amide of the formula <FORM:1063728/C2/3> followed, if necessary, by hydrogenolysis and/or hydrolysis so as to replace any protecting group by H or by acylating a tetrapeptide of the general formula of the products wherein Z is NH with a compound X-Q and optionally removing any protecting groups, or by reacting a compound of the formula <FORM:1063728/C2/4> with a compound of the formula <FORM:1063728/C2/5> followed if necessary by removal of any protecting groups, or by reacting an ester of the formula <FORM:1063728/C2/6> with an amino compound HNR1R2, followed, if necessary by hydrogenolysis and/or hydrolysis so as to replace any protecting groups by H.  The 2,4,5-trichlorophenyl esters of N-t-butoxy-carbonyl-4-, -5-, and -6-methyl-DL-tryptophan and indol - 3 - ylacetic 3 - (indol - 3 - yl) propionic and 4 - (indol - 3 - yl) butyric acid; N-carbobenzoxy - b  - benzyl L - aspartyl - L - phenylalanine anilide and L-aspartyl-L-phenylalanine anilide; N - carbobenzoxy - b  - benzyl - L - aspartyl - L - phenylalanine methylamide and L-aspartyl - L - phenylalanine methylamide; N-carbobenzoxy - L - phenylalanine anilide and L - phenylalanine anilide; N - carbobenzoxy-L-phenylalanine methylamide and L-phenylalanine methylamide acetate; N-benzyloxycarbonyl-b -benzyl - L - aspartyl - L - phenylalanine piperidide and L-aspartyl-L-phenylalanine piperidide; N - carbobenzyloxy - L - phenylalanine piperidide and L-phenylalanine piperidine-HCl; N-t-butyloxycarbonyl - b  - alanyl - L - tryptophanyl-L-norleucine hydrazide; N-t-butyoxycarbonyl-b -alanyl - L - tryptophanyl - L - norleucine methyl ester; N - benzyloxycarbonyl - L - tryptophanyl-L-novleucine methyl ester and hydrazide and L - tryptophanyl - L - norleucine methyl ester are prepared as starting materials.
Patent GB-329509-A (GB)
Title: Improvements relating to automatic firearms
IPC: F41A5/02
Filed: 1929-05-17
Abstract: 329,509. Rheinische Metallwaarenund Maschinenfabrik. Nov. 12, 1928, [Convention date]. Breech actions, sliding breech-block.-Automatic firearms of the kind in which the barrel and breech mechanism recoil together till the breech is unlocked after which the breech is accelerated relative to the barrel, are provided with an intermediate separate rotary piece between the barrel and breech mechanism by which the unlocking and accelerating movements are effected. The ring e which is screwed to the breech sleeve b is provided with an interruptedthread c<2> for locking the. breech-block d. The ring is rotated by studs c<1> and cam grooves a<3> in the casing. During the initial rotation, the breech-block is unlocked and during subsequent rotation the breech-block is accelerated by means of cams c<5> on the ring adapted to engage shoulders d<3> on the non-rotatably guided breechblock. A spring detent e on the breech-sleeve engages a recessed collar of the ring c to limit its backward rotation, said detent being freed from the recess to permit the unlocking movement by a nose thereon riding up the end of a groove a<4> in the breech-block. In a modification, the barrel may be rotatable relatively to the breech-block and be adapted to function like and in place of the ring.
Patent GB-1033107-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B75/26
Filed: 1963-04-19
Abstract: 1,033,107. Inclined crank mechanisms. A. N. SAVAGE, and J. PISTON. April 19, 1963, No. 15578/63. Heading F2K. [Also in Division F1] In a two-stroke engine the piston 17 is connected to the drive-shaft 25 by a rocker member 32 having a spindle portion 33 and arm portion 34, the spindle 33 being journalled at one end 50 in an oblique recess 53 in the shaft 25 and seated at the other end 43 in a spherical seat 44 coaxial with the shaft axis. The arm 34 has its end 41 pivotally connected to a block 38 slidable transversely of the piston axis and rotatable about an axis transverse to the piston axis. The spindle rotates in a conical path about the centre of seat 44 and the arm 34 oscillates approximately in the common plane through the cylinder and shaft axes, the block 38 mounted in a bifurcated seat 37 sliding laterally during the piston movement.
Patent GB-1180590-A (GB)
Title: Photosensitive Materials
IPC: G03C1/46
Filed: 1967-04-05
Abstract: 1,180,590. Photo-sensitive material for half tone images. FUJI SHASHIN FILM K. K. April 5, 1967 [April 5, 19661, No. 15586/67. Heading G2C. A photo-sensitive material for producing half tone images comprises a support having disposed thereon a photo-sensitive layer containing particulate photo-sensitive elements having a minimum particle size of 10Á, said elements being made up of a mixture of groups of photo-sensitive elements which groups differ from each other in photosensitivity the elements in any one group being of the same sensitivity, all of said elements being uniformly dispersed in a single plane as a monoparticulate layer, the distribution of said elements being such that they show no periodicity with respect to sensitivity. In examples the photo-sensitive elements are large silver halide grains average grain size 25-35Á or micro-capsules of the order of 30Á size containing a plurality of smaller silver halide grains. Variations in sensitivity is achieved by variations of the kind of gelatine, iodide content, sulphur ornoble metal sensitisation in the groups of silver halide grains or varying the extent of dye-sensitizing of the micro-capsules.
Patent GB-1409409-A (GB)
Title: Conveyor belt
IPC: B65G15/42
Filed: 1974-04-09
Abstract: 1409409 Belt-conveyers CONRAD SCHOLTZ AG 9 April 1974 [17 April 1973] 15593/74 Heading B8A A conveyer belt 1 for carrying articles 13 up steep inclines is provided with transverse flaps 6a, 6b connected at their trailing edges to the belt and resiliently biased into inoperative position in which their leading edges are either flush with, or project slightly above, the surface of the belt 1, the arrangement being such that a backwardly slipping article causes the flap to pivot or fold backwards and arrest the article. The inner faces of the flaps may have serrations 10. The belt may be provided with recesses housing the flaps.
Patent GB-277442-A (GB)
Title: Improvements in and relating to sparking plugs suitable for internal-combustion engines
IPC: H01T13/46
Filed: 1926-06-21
Abstract: 277,442. Aspden, R. L. June 21, 1926.- Sparking-plugs. - A choke coil e<1> is wound round the insulation, permitting only a high-frequency discharge across the spark gap. The coil may be connected at either or both ends to the metallic parts of the plug and is lodged in a helical groove. It may be replaced by metallic paint, or the deposit of soot within the groove may be relied on to form a conductor. Within the plug is a spark gap g, a condenser effect being produced between the rod a and a sleeve i surrounding the insulator. Specification 261,820 is referred to.
Patent GB-402457-A (GB)
Title: Improvements in or relating to steam superheater elements for use in locomotive and other smoke tube boilers
IPC: F22G7/06
Filed: 1932-06-02
Abstract: 402,457. Return bends. SUPERHEATER CO., Ltd., and ROBINSON, E. A., Bush House, Aldwych, London. June 2, 1932, No. 15666. [Class 99 (i).] In a smoke-tube superheater element of the kind having a large diameter pipe joined at the firebox end of the element to at least four relatively small diameter return pipes, the small diameter pipes are arranged in groups which are separately connected to the firebox end of the large diameter pipe. The firebox ends of four small diameter pipes 2-5, are welded together in pairs, and the unions 6, 7 of the pairs are welded to the end of the large diameter pipe 1, which is then closed by forging or swaging. The small diameter pipes are also welded together at their smoke-box ends, and the two unions 9, 10 are welded to a bifurcated connecting box 11, into which is welded a pipe 12 leading to the superheater header. The unions 9, 10 may be cylindrical and may be buttwelded to a wrought-iron connecting-box with drilled steam passages, or the unions may be welded into a spectacle plate which is in turn welded to the face of an open pressed or forged connecting-box. Further the unions 9, 10 may be welded directly into the connecting pipe 12. The unions 6, 7 and the firebox end of the large diameter pipe may be forged together to form a connecting portion which is closed by a welded-on cap, or the imions and pipe end may be welded directly into a cap formed by boring a solid forging, or into a sleeve which is afterwards swaged down and closed to form a return end. Specifications 222,224, [Class 123 (iii), Steam separators &c.], and 266,830, [Class 99 (i), Pipes and tubes, Joints &c. for], are referred to.
Patent GB-1275541-A (GB)
Title: A method of forming an article in sheet or slab form from foamed material and articles so formed
IPC: D06N3/00
Filed: 1969-03-26
Abstract: 1275541 Upholstery; floor mats BREVETEAM S A 26 March 1969 [26 March 1968] 15719/69 Headings A4M and A4S [Also in Divisions B5 E1 and F2] A sheet 10 of foamed material which is thermoplastic or elastic is formed with through slits 11 inclined to both surfaces of the sheet. The sheet is then expansible by opening out of the slits to form gaps. The sheet may be expanded while hot and set by cooling in its expanded state. The resulting sheet is compressible by closing the gaps or may be hardened in its expanded state. The gaps may be filled with a loose filling which is retained by a covering layer. The slits are cut by knives while the sheet material is compressed. The sheet may be used as sound or heat insulation, or for upholstery or mats.
Patent GB-584523-A (GB)
Title: Improvements in containers for hot fluids
IPC: B01J19/00
Filed: 1944-08-17
Abstract: 584,523. Tanks. ARNOLD, C. (Standard Oil Development Co.). Aug. 17, 1944, No. 15722. [Class 69 (i)] A container for hot fluids comprises an outer metal shell 1, an inner metal liner 3 spaced from the shell and an imperforate frustoconical metal plate 5 welded at one end to the shell 1 and at the other end to the liner, to prevent the flow of fluid through the space between the shell and liner. Corrosion of insulation inside the shell and failure of the shell due to excessive temperatures is thus obviated. The upper and lower ends of the liner 3 may be free. The shell 1 is lined with refractory material 2, e.g. refractory cement or firebrick, which may be sufficiently spaced from the liner 3 to allow for radial expansion of the latter. The liner 3 may be vertically fluted to allow for radial expansion. A gap 4 in the lining 2 to accommodate the plate 5 may be filled with compressible insulating material, e.g. rock wool, powdered magnesia or alumina, or lead slag wool. A manhole 8 in the shell is fitted with a sleeve 9 containing insulating material. A corresponding opening in the liner 3 is closed by a plate 12 secured to a flange on a collar 10 by hook-headed bolts 14.
Patent GB-997699-A (GB)
Title: Improvements in and relating to glass
IPC: B24B7/24
Filed: 1964-04-16
Abstract: 997,699. Grinding. PITTSBURGH PLATE GLASS CO. April 16, 1964 [April 30, 1963], No. 15738/64. Heading B3D. A method of removing shallow defects from flat glass comprises abrading the glass surface with a block of hard elastomer incapable of conforming to the defect contour while supplying an aqueous slurry of finely-divided rare earth abrasive between the block and the glass. In apparatus for carrying out the method, ten blocks 13a and ten blocks 13b are freely rotatably mounted on upper and lower frames 14a, 14b secured to motor-driven spindles 15a, 15b for operation on the upper and lower surfaces of a ribbon 10 of glass which may be formed by the float process. Each block is of circular form and consists of a grooved disc 20 of plastic, such as polyvinyl chloride, polycarbonate, acetal resin or polypropylene having a Shore D hardness between 60 and 90, backed by a resilient layer 21 of sponge rubber on a rigid iron backing disc 22. The block has a central opening 23 for the supply of slurry and circular and radial grooves 24, 25, 26 for distributing the slurry between the block and glass. The slurry comprises an abrasive in the form of a rare earth oxide mixture, such as lanthanum or cerium oxide having an average particle size of 1 micron mixed with water, there being 5 to 10 parts by weight of abrasive for each part of water. The slurry is supplied from a feed tank 25 and heat exchanger 27 to metering means 28a, 28b and pipes 16a, 16b leading to the blocks. The used slurry is collected in a sump 17 having a pipe 18 leading to a screen 31 and re-cycling tank 20 from where it is pumped through line 21 into successive hydrocyclone particle separators 22, 23. The smaller particles in the slurry are drawn upwardly and fed by pipe 24 to the feed tank 25 while the larger particles are returned by pipe 30 to the screen 31 and tank 20. Periodically a portion of the contents of tank 20 are passed to a settling tank 34 through valves 35, 36 and a return pipe 37. Loss of slurry is compensated by a make-up tank 32. The method and apparatus are intended to remove defects in glass sheet of the order of up to 1 micron depth and a width to depth ratio of not less than ten thousand to one, the elastomer of the block being of such a hardness that it does not conform to the contour of the defect.
Patent GB-1002994-A (GB)
Title: Device for use in automatic cycle flat bed knitting machines for varying the closeness of knit
IPC: D04B11/02
Filed: 1964-04-16
Abstract: 1,002,994. Knitting-machines. A. COPPO. April 16, 1964 [April 19, 1964], No. 15789/64. Heading D1C. The position of the needle cams mounted on the carriage of a flat bed machine can be altered to vary the quality of the fabric. For this purpose each cam 25 is engaged by a roller 24 on the end of one arm 21 of a bell crank lever the other of which engages one of a number of projecting cams 13 secured to a rotatable disc 11. Rotation of the disc which is mounted on the carriage causes the bell crank lever to pivot and thereby raise or lower the cam 25. The disc 11 is rotated by pawl and ratchet mechanism operated by a lever arm 15 which engages a projection 26 at the end of the cam slide and which is movable into and out of an operative position under pattern control.
Patent GB-353151-A (GB)
Title: Improvements in and relating to the production of corrected colour-selection positives for colour-photography and multi-colour printing
IPC: G03F3/04
Filed: 1930-05-22
Abstract: 353,151. Colour photography. STRAATEN, L. O. VAN, Biggekerke, Sealand, Holland. May 22, 1930, No. 15799. Convention date, Sept. 6, 1929. Drawings to Specification. [Class 98 (ii).] For the production of corrected colour-selection diapositives, applicable for colour photographs, or colour printing without hand retouching, a strip of material having primary colour areas (e.g. yellow, blue and red) which are preferably graded, is photographed at the same time as the original. Colour selection negatives are taken (e.g. using green, violet, and orange filters) and also negatives through filters of the primary colours on the strip. From the latter set of negatives compensating diapositives are produced, having a density which corresponds to the inherent visible faults in the images of the primary colours on the strip in the original colour-selection negatives. These diapositives are then combined with the corresponding original colour selection negatives to produce the corrected colour-selection diapositives.
Patent GB-361881-A (GB)
Title: Apparatus for cleaning and washing the wire cloth of paper making and like machines
IPC: D21F1/32
Filed: 1930-05-22
Abstract: 361,881. Cleaning wire-cloths of paper-making and like machines. ANTOINE, V., Chalet du Wasai, Lambermont, Belgium. May 22, 1930, No. 15823. Convention date, May 22, 1929. Void [Published under Sect. 91 of the Acts]. [Class 96.] The wire cloth of a machine for making paper, board &c. is cleaned by steam or other fluid ejected under pressure, a carriage 11, Figs. 1 and 2, being movable on bars 7 extending across the whole width of the cloth 4, and having a fluid supply pipe co-operating with apparatus for distribution of the fluid. The pipe 15, Fig. 2, which is fitted in axles 13 of the rollers 12 of the carriage 11 is connected by a T-piece 16, a bend 17 and a flexible pipe 18 with the supply, and delivers steam &c. through a nozzle 24, Figs. 2 and 6, the T-piece end being stopped by a plug in which is screwed a rod 20 with a handle 21 for moving the carriage. In an alternative form the fluid is distributed from a slit along part of the lower side of a tube connected with a flexible supply hose and movably supported within a tube which is open along its lower side and is fixed across the machine.