baber/WOPTO huggingface dataset:
Patent GB-688785-A (GB)
Title: Process for the production of vat dyestuffs of the phthalocyanine series
IPC: C09B47/08
Filed: 1950-11-22
Abstract: The invention comprises phthalocyanine vat dyes of the formula Ph-(R.COOH)n, where Ph is a heavy metal phthalocyanine radical, R is an aliphatic radical (especially -CH2-, -CHCl-, or CCl2-) and n is an integer from 1 to 4, said vat dyes being vattable in alkaline hyposulphite solutions but substantially insoluble in aqueous alkali metal hydroxide solutions.  They are made by heating 1 mol. of a heavy metal phthalocyanine insoluble in aqueous alkali metal hydroxide solutions with 1-4 mols. of a halogenated aliphatic acid in presence of a Friedel-Crafts catalyst at 180-200 DEG  C. until a sample of said dyestuff is vattable in alkaline hyposulphate solution but substantially insoluble in aqueous alkali metal hydroxide solutions.  Heavy metals specified are copper, iron, nickel, cobalt, chromium, molybdenum, bismuth, manganese, and tin.  A diluent such as trichlorbenzene may be used in the reaction, and the product may be separated by addition of further diluent or by steam distillation of such diluent.  In examples: (1) cobalt phthalocyanine is heated with trichloracetic acid or monochloracetic acid in trichlorbenzene in presence of ferric chloride; (2) copper phthalocyanine is heated with trichloracetic, trichlorpropionic, or trichlorlactic acid in trichlorbenzene in presence of aluminium chloride.  Other halogenated aliphatic acids specified are monobromo-acetic acid, chloroformic acid, dichloroacetic acid.  Specification 487,261 is referred to.
Patent GB-712058-A (GB)
Title: Improvements relating to the production of cyclopentanoperhydrophenanthrene derivatives
IPC: C07J5/00
Filed: 1951-12-05
Abstract: The invention comprises new compounds having the formula <FORM:0712058/IV (b)/1> wherein R is the residue of a lower fatty acid containing up to 6 carbon atoms and their preparation by hydrogenating a lower fatty ester of D 4-pregnene-17a ,21-diol-3,11,20-trione in the presence of a hydrogenation catalyst to produce a reaction mixture containing a lower fatty acid ester of allopregnane-17a ,21-diol-3,11,20-trione from the reaction mixture by crystallization; the last-mentioned ester may be mono-brominated to produce the corresponding 2-bromo compound and subsequently dehydrobrominated to the corresponding D 1-compound by refluxing with collidine.  The hydrogenation may be effected in ethyl acetate in the presence of a palladium catalyst.  Bromination may be effected by means of bromine in glacial acetic acid.  Examples disclose the use of D 4 - pregnene - 17a ,21 - diol - 3,11,20 - trione - 21-acetate as starting material.
Patent GB-1276679-A (GB)
Title: Method for making an intermediate product for integrated circuits by the deposition of silicon
IPC: H01L21/3205
Filed: 1969-06-05
Abstract: 1276679 Silicon layers CENTRE ELECTRONIQUE HORLOGER SA 5 June 1969 [20 June 1968] 28567/69 Heading C1A [Also in Division H1] A polycrystalline layer of silicon, containing 0À008-0À016 mole per cent of SiO 2  and 0À01- 0À022 mol. per cent C (both based on the deposited pure silicon) is deposited on a substrate by vapour phase decomposition. The preferred precursors of the three components are trichlorosilane (Si), tetraethoxysilane (SiO 2 ), and toluol (C) and a preferred substrate is monocrystalline silicon. This process may be a step in the production of integrated circuits and the produced integrated circuits are also claimed.
Patent GB-535907-A (GB)
Title: Improvements in or relating to radio receivers and to automatic gain control arrangements therein
IPC: H03G1/00
Filed: 1939-10-24
Abstract: 535,907. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., and BLACK, D. H. Oct. 24, 1939, No. 28599. [Class 40 (v)] The output of a low-frequency amplifier V is maintained constant by means of a negative feedback resistance R in the cathode lead, which resistance has a substantial negative temperature coefficient and is arranged to be heated by a heater H through which is passed the space current of one or more of the previous H.F. or I.F. valves which are themselves subject to the usual automatic gain control. Distortion is reduced since the feed-back as greatest with greatest signal strength. Frequency correction may also be obtained by connecting suitable networks across R.
Patent GB-1385319-A (GB)
Title: Enzyme preparations
IPC: C12N9/04
Filed: 1972-06-19
Abstract: 1385319 Cholesterol oxidase ex mycobacterium rhodocrons group NATIONAL RESEARCH DEVELOPMENT CORP 18 Sept 1972 [22 Sept 1971 19 June 1972] 44095/71 and 28650/72 Heading C3H An enzyme preparation derived from a cholesterol oxidase producing microorganism of the Mycobacterium rhodocrons group and especially from Nocardia species NCIB 10554 and 10555 and having a cholesterol oxidase specific activity of at least 1 unit per 5mg. of protein nitrogen may be obtained by growing said cholesterol oxidase producing microorganism and recovering therefrom an enzyme preparation as defined. The enzyme may be recovered by harvesting the cells and extracting with a surface active agent (iso-octyl phenoxy polyethoxy ethanol) and may be purified by ion exchange or affinity chromatography.
Patent GB-921135-A (GB)
Title: Articles of reinforced resin and methods of making same
Inventor: OSBORNE LEONARD ALAN
IPC: B29C70/86
Filed: 1959-08-21
Abstract: 921,135. Laminates. BRISTOL SIDDELEY ENGINES Ltd. Aug. 18, 1960 [Aug. 21, 1959], No. 28713/59. Class 140. Laminates of glass cloth, felted fibres, knitted cloth, parallel threads or paper, bonded with cold-setting or thermosetting resin are made with selected areas left unbonded by interleaving the layers in those areas, or parts thereof adjacent to the areas to be bonded, with sheets, e.g. of polyvinyl chloride or polythene, incompatible with the resin and holding them under pressure during impregnation of the layers with, and curing of, the resin. The unbonded layers may later be interleaved or otherwise combined with the layers of other laminates to make shaped articles. As shown, Fig. 2, glass cloth layers 14 are laid in a mould 10 shaped to produce an article of aerofoil section and having a lateral opening through which the layers protrude. The layers or their protruding ends are interleaved with p.v.c. sheets 15 and sealed with surface sheets 17 of rubber. The interleaved parts are compressed with a die 11, cold-setting polyester resin is applied to the remaining parts, the main die 13 is applied, followed by supplementary die 12 after surplus resin has been removed, e.g. with a brush from the parts beneath it, and the whole allowed to cure at room temperature. Subsequent removal of the sheets 15, 17 leaves the ends of the laminate 49 unbonded. These free ends 16a, 16b, 16c, Fig. 5, may then be interleaved with layers 57a, 57b, 57c, of a laminate 57, during its formation to make an air duct by wrapping the layers around a tubular core 58 of plaster formed with slots 59 into each of which an aerofoil section laminate such as 49 is inserted. The slots are bell-mouthed and the space so formed is filled with glass roving 61. On applying, and curing, resin, and removing the core 58, a duct having internally protruding guide vanes is formed. In Fig. 7 a finished construction is shown in which the free ends 29, 30 of the vanes 26 are applied only to the exterior of the duct wall 27. Separate lining sheets 32 and filling 31 may be added during the process or after removal of the core. According to the Provisional Specification the filling 31 may contain a rope-like glass roving wound around the root of the vane. In Figs. 8 and 9, which show a ring 40, a hub 43, and vanes 45 having terminal flanges 47, 48, all of laminated construction, unbonded areas 41, 44 in the ring and hub formed in accordance with the invention, are slit as at 42, 46, and the vanes 45 are inserted with their flanges between the unbonded layers and the whole consolidated by the application and curing of synthetic resin.
Patent GB-855250-A (GB)
Title: Means for feeding elongated workpieces to and/or from a centreless grinding machine
Inventor: SUMMERS HAROLD WILFRED
IPC: B24B5/38
Filed: 1958-09-08
Abstract: 855,250. Centreless grinding. CLIFFORD MACHINE TOOLS Ltd. Sept. 2, 1959 [Sept. 8,1958], No. 28718/58. Class 60. Means for feeding elongated workpieces 10 Fig. 1 into and removing from a centreless grinding machine of the kind having a work seat 9 between the grinding wheel 6 and a control wheel comprises at least one frame 22 adapted for connection to the main slide 7 and to extend therefrom below the work, antifriction bearings 17 supporting the frame for movement with the slide 7, a plurality of spaced pairs of power-driven work-supporting rollers 33, and means for locking the ends of the frame remote from the slide against lateral movement. The axes of each pair of the rollers 33 are so arranged relatively, that they move the workpiece carried between them at an axial speed through the grinding throat substantially equal to the rate for which the control wheel is set, the rollers being positively driven by a motor 37, gearing 34 and shafts 35 and 26, the former being splined to permit vertical adjustment of the frame 22. A bridge-piece 14 secured to the slide 7 and extending laterally therefrom has secured at one or both ends the lower member or members 16 of the frame or frames, if work-supports on both sides of the slide are required. Each end of the member 16 is supported on a pedestal 18 having an accurately machined transverse surface 19, with levelling screws 20, for the bearing rollers 17. Jacks 21 operated by a handwheel 23, shafts 24 and rack and pinion mechanisms 25, 26, Fig. 3, raise or lower the frame member 22, with the work 10, relative to the work-rest 9 and the lower member 16. Slotted arms 27 depending from the member 22 and clamped by levers 30, 31 and bolts 28, 29 to secure the frame members together after adjustment of the work. Lateral movement of the outer end of the frame is prevented by a clamping device 38, which is mounted on the outer pedestal 18, and is operable from a position adjacent to the adjusting means of the slide 7 by electro-magnetic or fluid pressure to close the clamp on to a cylindrical member 39 extending transversely of the frame member 16. The slide 7 carrying the work-rest 9 may be locked in position on the machine bed 5, the control wheel being carried by a second slide which is movable to or from the grinding wheel 6 and lockable to the slide 7, the control wheel being mounted on the slide for angular adjustment relative to the axis of the grinding wheel to determine the rate of feed.
Patent GB-1501518-A (GB)
Title: Explosive-powered fastener-driving tool
IPC: B25C1/10
Filed: 1975-07-08
Abstract: 1501518 Cartridge operated nail guns HILTI AG 8 July 1975 [29 July 1974] 28794/75 Heading B4C An explosively powered fastener driving tool comprises a barrel 2 movable relative to a housing 1 the barrel having at its rear end a detonation pin 8 to strike a charge 7 held by a closure member 5. As shown in Fig. 1 a spring urged bolt prevents rearward movement of the barrel until required. Further spring urged pins 14 not shown prevent accidental discharge if the apparatus is dropped on its rear surface. In a modification, Fig. 3, the two parts 23a, 23b of the barrel have a spring 24 therebetween so that it can be compressed by rearward movement of part 23a and subsequently released by bolt 31 to urge part 23b rearwards to cause detonation of charge 29. In Fig. 4 a spring urged trigger 57 is provided to allow relative movement of the part of the tool when said trigger is released.
Patent GB-1382496-A (GB)
Title: Selecting needles for patter'ing in a knitting machine
IPC: D04B15/78
Filed: 1972-06-20
Abstract: 1382496 Knitting-machines ELITEX ZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REDITELSTVI 20 June 1972 [21 June 1971] 28838/72 Heading D1C In a flat, or circular preferably two cylinder, machine, needle selectors comprise two mating parts 17, 18 the upper end of part 17 being forced inwards by spring 21, and an electromagnet 4 which can selectively hold part 18. At a selection point butts 16 of all selectors are raised by cam 5. If the electromagnet is energised the mating surfaces force part 17 to swing into recess 26 before it adopts the position shown in Figure 4 with butt 16 over the rise cam 6. If the magnet is unenergised, spring 21 forces the parts inwards, so that they rise in unison up cam 5, but are clear of cam 6.
Patent GB-1397179-A (GB)
Title: Turbomolecular vacuum pump
IPC: F04D19/04
Filed: 1973-06-18
Abstract: 1397179 Turbomolecular pumps LEYBOLDHERAEUS-VERWALTUNG GmbH 18 June 1973 [19 June 1972] 28906/73 Heading FIC The stagger of the rotor and stator blades of at least one stage of a turbomolecular pump (desirably at the high vacuum end of the pump) increases continuously or in steps radially outwards in such a way that the compression ratio in that stage remains substantially constant at different radii. This overcomes the tendency for the increase of peripheral velocity of the rotor with increasing radius to produce a corresponding increase in the compression ratio and a resultant radially inward conpensatory flow which would impair the pumping efficiency. The blade chord may also increase with radius to provide an approximately constant blade overlap and pitchto-chord ratio. The pitch-to-chord ratio may be greater than 1 in at least one stage at the high vacuum end of the pump, at least near the blade tips.
Patent GB-514030-A (GB)
Title: Improvements in or relating to master cylinders for fluid pressure braking systems
IPC: B60T11/224
Filed: 1938-10-05
Abstract: 514,030. Hydraulic brakes. HYDRAULIC BRAKE CO. Oct. 5, 1938, No. 28908. Convention date, Oct. 8, 1937. [Class 103 (i)] In a master cylinder for fluidpressure braking apparatus comprising low-and high-pressure cylinders 20 and 22 with respective pistons 56 and 102 operative in succession, a valve device is operated by the high-pressure piston at the commencement of its stroke to place the lowpressure cylinder in communication with the reservoir through a restricted passageway, whereby resistance to movement over the whole stroke is smoothed out and sudden movements of the pistons are resisted. Initial displacement of piston 56 by means of a pedal-actuated push-rod 142 closes a port 26 leading to a reservoir 10, the fluid in the cylinder 20 then being forced through a bore 132 in a tapering element 128 projecting from a spring-actuated plunger 118 mounted in a bore in the piston 102, through a passage 130 in element 128, along peripheral grooves 126 in plunger 118, and finally through a port 110 in piston 102 into the high-pressure cylinder 22, and thence through a valve 34 and conduit 36 to the brake cylinders. At the completion of its operative stroke, an adjustable pin 66 on the low-pressure piston 56 engages element 128, closing the entrance to the bore 132; and depressing plunger 118 to close the port 110 admitting fluid into cylinder 22. The high-pressure piston 102 now commences its operative stroke, being driven by the low-pressure piston 56 through element 128 and plunger 118, and is alone effective to force fluid into conduit 36 since port' 110 is now closed. The fluid in the low-pressure cylinder, bore 132 being now closed, is forced through a restricted passage between element 128 and a sleeve 92 to the space behind the high-pressure piston, and thence through a now open port 28 to the reservoir 10. The check on the flow of fluid provided by the restricted passage between sleeve 92 and element 128 prevents a sudden drop in the resistance to the movement of the push-rod and pedal when the high pressure becomes operative. The tapering form of element 128, however, reduces this check on the fluid flow during the stroke of the high-pressure piston.
Patent GB-1214343-A (GB)
Title: Improvements in and relating to spray apparatus
IPC: B05B7/12
Filed: 1968-06-18
Abstract: 1,214,343. Spray producers; mixing apparatus. GRAY CO. Inc. 18 June, 1968 [29 June, 1967], No. 28939/68. Headings B1C and B2F. Apparatus for spraying two fluid components as a 'homogeneous mixture comprises nozzle means 104 connected to a mixing chamber 102 and means for supplying the fluid components to the mixing chamber, said means comprising a first passage means 107 and a second passage means 108 connected to sources of fluid components, the longitudinal axis of at least one of the passages being oblique to a plane perpendicular to the principal axis of the mixing chamber, the longitudinal axis of the passages each; lying in one of two parallel planes. Preferably there are passage means for supplying solvent to the mixing chamber and means arranged for selectively connecting the chamber to the first and second passage means or to the solvent passage means. The passages may be provided to enter the mixing chamber tangentially, having an angle 'of 90‹ therebetween, and the means of selective connection may be rotation of the body 78 having the mixing chamber and supply passages through 90‹.
Patent GB-357788-A (GB)
Title: Improvements in duplicating apparatus
IPC: B41L9/00
Filed: 1930-09-29
Abstract: 357,788. Printing. HEYWOOD, W. A., 197, Worsley Road, Winton, Patricroft, near Manchester. Sept. 29, 1930, No. 29128. [Classes 100 (i) and 100 (ii).] Copying documents, drawings, and the like.-In duplicating-apparatus of the kind employing an impervious printing-surface, such as glass or porcelain, on to which the matter to be copied has been transferred from an original document written with an alkaline or acid ink, the printing- surface is in the form of a complete roller, such as the roller 1 coacting with an impression roller 2, and printing is effected on a web of paper 22, which passes continuously between the rollers and is held stationary, while being cut into sheets, by means of a clamping-blade 33 extending substantially across the width of the paper and of narrow breadth. The blade 33 is arranged adjacent to cutting-apparatus comprising a fixed blade 26 and a vertically reciprocating blade 28. Feeding and registering webs.-The web 22 after leaving the continuously-driven rollers 1, 2 passes over a track 24 consisting of a number of wires stretched over a table 35 provided with a ridge so that when the bar 33 clamps the forward end of the web, the latter forms into a hump 22a which straightens out when the web is released after cutting. A pair of wires 36 pivoted at 37 and a second pair 39 pivoted at 40 rest on the web and assist in straightening out the hump. A wire stirrup 38 pivoted at 37 strips the web off the roller 1. Cutting-apparatus.-The blade 28 is fixed to vertical posts 29 actuated by a cam-operated lever 31 against the action of returning-springs 30. The pressure bar 33, which has a non-metallic clamping-surface, is pressed down by the bars 29 through the intermediary of springs 34. The web is prevented from rising with the return of the blade 28 by a wire stirrup 41 pivoted at 40 and provided with an extension 42 jerked upward by the bar 33 on its return stroke. Impression adjustments and tripping -arrangements.-The roller 1 is mounted in bearings 4 arranged in guides 5. A spring-pressed plunger 6 engaging each bearing 4 is carried in a tubular screw 7 mounted in a lever 8 pivoted at 9 and releasably held in operative position by a catch 10. Inking-apparatus.-The roller 1 is inked by a roller 11 supplied by a roller 12 to which ink is applied. The rollers 11, 12 are mounted in a frame 15, which is pivoted to the main frame at 16 and is connected by a strong spring 18 to a handlever 21 adapted to be turned about a pivot 20 to rock the frame 15 into operative position.
Patent GB-948201-A (GB)
Title: Condensation product of a phenol and an unsaturated hydrocarbon
Inventor: SONNABEND LAURENCE FAYE
IPC: C08G8/30
Filed: 1961-08-11
Abstract: Meta or para-diisopropenyl benzene or a mixture thereof is condensed with phenols at elevated temperatures in the presence of acidic alkylation catalysts.  The phenol may be phenol itself, a bisphenol, or their alkylated derivatives having 1-4 carbon atoms per alkyl group, p-cresol, phenol, and bisphenol A being preferred. The diisopropenyl benzenes preferably accounts for 44-56 mole per cent. of the reactants. 0.8 to 1.25 mole of phenol per mole of diisopropenyl benzene are preferred, but excess phenol may be present.  A solvent, e.g. aromatic hydrocarbons may be present. 60-125 DEG C. is preferred and the preferred catalysts are mineral acids e.g. sulphuric, these being usually 0.25-1% by weight of reactants.  Reaction generally takes 2-6 hours, when the catalyst is normally neutralized with NaOH and volatiles are removed under vacuum. Films may be formed from solutions of the product in e.g. benzene or methyl ethyl ketone.ALSO:Condensates prepared from diisopropenyl benzene (DIPB), and phenols are used to make films on glass slides as follows: Example 1-50% solution in methyl ethyl ketone of p-cresol-p-DIPB condensate; Example 2-50% solution in benzene of phenol-p-DIPB condensate; Example 3-50% solution in benzene of phenol-m-DIPB condensate; Example 4-50% benzene solution of bisphenol A-p-DIPB condensate; Example 5-50% benzene solution of phenol-p-DIPB condensate; Example 6-as in 5 using m-DIPB; these solutions were cast on to microscope slides and dried at room temperature.
Patent GB-210494-A (GB)
Title: Improvements in metallic packings for stuffing boxes
IPC: F16J15/28
Filed: 1922-10-26
Abstract: 210,494. United Kingdom Self-adjusting Anti-friction Metallic Packing Syndicate, Ltd., and Brooks, F. G. Oct. 26, 1922. Channels ard reservoir in stuffing-boxes of the type described in Specification 20952/08, [Class 122, Steam engines]. An annular recess S<3> for lubricant is formed 'between the liner P and the wall of the stuffing-box. The lubricant is supplied by a passage S and a slot S<2> in the stuffing-box to the recess S<3> and passes by ports P<4> to the rod. Ports may also be formed in the casing R for the packing Q. Reference has been directed by the Comptroller to Specification 23154/95, [Class 122, Steam engines].
Patent GB-323805-A (GB)
Title: Improvements in the purification of hydrocarbon oils
IPC: C10G17/00
Filed: 1928-10-11
Abstract: 323,805. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Oct. 11, 1928. Mineral and tar oils, purifying.-Crude liquid hydrocarbons such as mineral, tar, or lubricating oils, or oils obtained by the destructive hydrogenation of carbonaceous materials, are mixed with a purifying agent such as aqueous solutions of alkali, or sulphuric or metaphosphoric acid, and submitted to distillation in vacuo, while passing in a steam of inert gas or vapour-such as air, nitrogen, steam, or vaporized hydrocarbons-containing atomized liquids of lower boiling range than the hydrocarbons treated, e.g. benzene, alcohol, benzine, or water. In examples, crude lubricating oil, mixed with caustic soda or phosphoric acid solution, is distilled in a vacuum of 2 mm. mercury while passing in a current of air or nitrogen, containing atomized water, benzene, or ethyl or methyl alcohol. Specifications 213,267, 235,792; and 301,130, [Class 32, Distilling &c.], are referred to.
Patent GB-1419102-A (GB)
Title: Crop harvester
IPC: A01D43/06
Filed: 1972-11-13
Abstract: 1419102 Finger units for crop harvester INTERNATIONAL HARVESTER CO 13 Nov 1972 [18 Nov 1971] 29333/75 Divided out of 1419101 Heading A1F The subject matter is identical to that of the main Specification 1419101, but the claims are directed to a disc assembly comprising a disc housing 237; finger 239 for engaging the cut crop, being mounted on opposite sides of the housing 237 and being movable from an active position normal to the respective sides of the housing 237 to a retracted position alongside the respective sides of the housing 237; and a common actuating means, 240 for moving the fingers 239 to their active position.