baber/WOPTO huggingface dataset:
Patent GB-1280375-A (GB)
Title: Conversion of heavy hydrocarbon feedstocks
Inventor: MOSS GERALD
IPC: C10G9/00
Filed: 1970-01-27
Abstract: 1280375 Combustible gas ESSO RESEARCH & ENG CO 19 April 1971 [27 Jan 1970] 3824/70 Heading C5E An apparatus for converting S-containing heavy petroleum feedstock to H 2 , hydrocarbon gases and to light petroleum comprises three fluidized beds, 12, where the feed is converted to H 2  and gaseous hydrocarbons with coke deposition on the particles, 21, where the coke is at least largely burnt, and 40, where the particles are regenerated. The particles comprise CaO or precursors therefor, e.g. calcined limestone or dolomite, and temperatures in the beds must lie respectively in the ranges 500‹ to 700‹ C., 800‹ to 1000‹ C., and 1000‹ to 1100‹ C., bed 12 being supplied with steam at 14, bed 21, with O 2 , optionally with steam, at 23, and bed 40 with O 2  at 48. Tar and fines are recycled from a slurry trap 16 at 19 and vapours are passed to a fractionator 18 and condenser 62. Steam for propelling the particles between the beds is delivered at 33, 52, 54, 59, and the following control elements are provided:-temperature responsive 26, (for a diluent, e.g. steam or nitrogen) 49, 58; pressure-responsive 29, 30, 56; 37 responsive to CO 2  in off-gases 36; 45 responsive to SO 2  (or O 2 ) in off-gases from the bed 40; 61 responsive to H 2 S in the H 2  &c. mixture leaving bed 12, the element 61 actuating a valve 60 to dump particles from the bed 40; and 63, 64 which measure the head of particles in the bed 12 and actuate a hopper 66 for fresh particles. Feed-stock supply may be regulated by the temperature in the bed 12. The gases leaving the bed 21 at 36 may be suitable for ammonia synthesis, Fischer-Tropsch reactions, or for the water gas shift reaction to make H 2 .
Patent GB-770486-A (GB)
Title: Anti-foaming compositions
IPC: B01D19/04
Filed: 1955-02-09
Abstract: Dimethyl silicon or siloxane esters of a propylene glycol, ethylene glycol, or of lower monoalkyl ether of these glycols, are prepared by esterification of a dimethylpolysiloxane with a glycol or polyglycol, trans-esterification of an alkoxydimethylsilane with a glycol or polyglycol, or esterification of dimethyl-chlorosilane with a glycol or polyglycol.  Glycols and ethers which may be esterified are the monomethyl ether or monobutyl ether of ethylene glycol, the monoethyl ether of propylene glycol, dipropylene glycol, triethylene glycol, and pentapropylene glycol.  In examples: (a) dimethyl siloxane cyclic tetramer is equilibrated with a propylene glycol by heating in the presence of sodium hydroxide catalyst; (b) dimethyldichlorosilane is esterified with ethylene glycol; (c) an ester of the formula (CH3)2 Si[OCH2CH2OCH3]2 is prepared.  The esters are useful as antifoaming agents (see Group III).ALSO:An anti-foaming composition, useful as an antifreeze solution consists essentially of an aqueous solution of a glycol or of an aliphatic monohydric alcohol having less than four carbon atoms in the molecule, containing as anti-foaming agent a dimethyl silicon or siloxane ester of a propylene glycol, ethylene gycol, or of a lower monoalkyl ether of these glycols.  The solution contains at least 0.001 per cent by weight (preferably at least 0.01 per cent) of the dimethyl silicon or siloxane units and the anti-foaming agent may contain 5-95 mol per cent of dimethyl silicon or siloxane units and 95-5 mol per cent of units of the residue of the glycol or ether.  Suitable glycols or alcohols for forming the aqueous solution are ethylene glycol, propylene glycol, methanol, ethanol, n-propanol, isopropanol, and mixtures thereof.  The solution may also contain inhibitors of rust or oxidation.
Patent GB-1380804-A (GB)
Title: Revolving doors
IPC: E06B3/90
Filed: 1972-01-28
Abstract: 1380804 Revolving doors C J RUSH Ltd 28 Jan 1972 [18 Feb 1971] 4058/72 Heading E1J A collapsible revolving door comprises upper and lower mechanisms 14 rotatable about a vertical axis, means 48 releasably locking door leaves 4 to the mechanisms in an angularly spaced relationship about the axis, relative movement between the mechanisms 14 being limited only by the door leaves. The leaves 4 are secured by pin 42 to cam follower 44, the pin being movable in a slot 64 in the base 66 of mechanism 14. A spring biassed ball 74 engaging a recessed detent 76 releasably positions the follower and door leaf. When a sufficient force is applied to a leaf, cam follower pivots about the axis of pin 56, the side of the follower then engages a lobe 90 of cam 86 which projects from base 66 and the pin is caused to slide outwardly along slot 64. The leaves may thus take a parallel position. The upper mechanism is keyed to a shaft (106, Fig. 5, not shown) supported by a self aligning bearing (120) and the lower mechanism is keyed to a shaft (153) supported by tapered thrust bearing (158).
Patent GB-621013-A (GB)
Title: Improvements in or relating to magnetic dust cores
IPC: H01F1/26
Filed: 1947-02-12
Abstract: 621,013. Magnetic dust cores. GENERAL ELECTRIC CO., Ltd., and THOMAS, A. D. Feb. 12, 1947, No. 4065. [Class 38 (ii)] A magnetic dust core contains 0.25-2.0 per cent by weight of sodium silicate and 1.0-25.0 per cent by weight of polyethylene. The magnetic powder may be mixed with sodium silicate in water, dried, and polyethylene dissolved in tri-chloroethylene may be mixed in under heat. The core may be formed by pressing, extruding or injection moulding. The magnetic powder may be a 50: 50 alloy of iron and nickel or iron produced from iron carbonyl. The completed core may be heated at not more than 140‹ C. for at least one hour. Specifications 471,590, [Group IV], and 491,537 are referred to.
Patent GB-575210-A (GB)
Title: Improvements relating to the production of metal in the form of powder or granules
IPC: B22F9/10
Filed: 1944-03-06
Abstract: 575,210. Freezing spray. KING, D. S. March 6, 1944, Nos. 4132 and 19826. [Class 29] [Also in Groups II and III] In the production of materials in powdered or granular form, the molten material is projected by centrifugal force through apertures in the wall of a rotary drum between turns of one or more electrical heating elements wound round or embedded in the drum and serving to maintain the wall of the drum at a temperature high enough to prevent clogging of the apertures by premature solidification of the molten material. The material is fed into the drum at such a rate that it forms a thin layer on the inside of the drum. The rotary drum 1 is carried by the flange 2 on the end of a shaft 3 carried in bearings 5 in a frame 6 mounted to run on wheels on rails 7 and carrying a motor 8 connected by a flexible coupling 9 to the shaft 3, and supplied with current from a junction box 10 connected by a cable 11 to a control panel 12. The drum is made of ceramic material and is provided with a central opening 14, apertures 15 in its cylindrical surface between the turns of a helical groove 16 in which a resistance winding 17 is laid, the ends of the winding being taken to slip rings 18, 19 with which the brushes 20, 21 contact. The frame 6 is moved forward until the drum 1 lies centrally inside a casing 24 having an opening 25 at the bottom leading to a water tank 26 and also a perforated pipe 27. In operation the water is supplied to the pipe 27 and when the water is running down both sides of the drum 24 the frame 6 is moved into the drum and molten material fed into the latter bv the pipe 28. At the same time the motor 8 is started up and the local heat generated prevents the clogging of the apertures 15. The particles projected through the apertures strike the curtain of water produced in the casing 24 and the solid particles are carried down into the tank 26 where they are removed by an endless conveyor 29. In a modification, Fig. 5, the drum is made in two parts 45, 46 formed with flanges secured together by bolts 47, the apertures consisting of narrow slits separated from one another by the bolts, the width of the slits being fixed by spacing discs 49 of ceramic or like material. The windings 51 in the part 45 is supplied with current by rings 52 and the winding 54 on the part 46 by rings 55. The drum in either form may be mounted so as to be vertical, in a tank provided with a spray pipe similar to the pipe 27. The production of powders or granules of metal or of the materials commonly known as plastics or organic materials such as waxes or resins are referred to.
Patent GB-737119-A (GB)
Title: Improvements in blocking oscillator circuit arrangements for producing variations inpulse duration
IPC: H03K3/16
Filed: 1953-02-16
Abstract: 737,119. Pulse-generator circuits. CHAMBERS, D. Feb. 12, 1954 [Feb. 16, 1953], No. 4244/53. Class 40 (6). A pulse generator comprises a first blocking oscillator the output pulse from which is integrated and fed to trigger a second blocking oscillator from which the output is fed back to re-set the first blocking oscillator. The Figure shows a circuit for generating a pulse of variable duration in which a positive input pulse at lead 2 triggers a blocking oscillator comprising valve V1 the pulse at the control-grid 3 being fed via integrating circuit R1, C1 to trigger a second blocking oscillator comprising valve V2. The point at which valve V2 is triggered, and thus the output pulse duration, can be varied by adjustment of the bias control potentiometer 5 and the screen-grid of valve V2 is coupled to the control grid of valve V1 to terminate the pulse generated by valve V1 which is amplified in valve V3.
Patent GB-1440341-A (GB)
Title: Magnetic recording head assemblies
IPC: G11B5/265
Filed: 1973-01-27
Abstract: 1440341 Magnetic heads PHI MAGNETRONICS Ltd 28 Jan 1974 [27 Jan 1973] 4280/73 Heading G5R A magnetic head assembly has a write head 1, Fig. 1, and a read head 2, one, or preferably both, of which is individually surrounded by a respective electrically conductive sleeve 3, 4, the or each sleeve 3, 4 being formed of a composite material comprising a ferromagnetic layer provided with an electrically conductive layer on its internal or external surface, or both, and the or each said electrically conductive layer being formed or rendered peripherally continuous. Each head may be surrounded by a respective sleeve 3, 4 comprising a highly permeable layer, e.g. of nickel-iron alloy, which need not be peripherally electrically continuous, with a peripherally electrically continuous copper sleeve slid thereover, or each sleeve may comprise a magnetically permeable layer which is copper plated and seamed on its internal and/or external surface to render it peripherally continuous. A ferromagnetic sheath 6 surrounds the sleeves 3, 4 and a ferromagnetic shield 5, of ferrite or numetal, is located between sleeves 3, 4. The sheath 6 and shield 5 may have a laminated construction similar to sleeves 3, 4. The assembly is formed by cementing the innermost polepieces 9, 10, Fig. 1, of laminated numetal into respective parallel slots in opposite faces 16, 17, Fig. 3, of a central aluminium block 11, block 11 and polepieces 9, 10 being machined and lopped so that faces 16, 17, including surfaces of polepieces 9, 10, are optically flat and parallel with a spacing of 0À150 Œ0À001 inch. Block 11 is then formed with a central slot and the outer polepieces 12, 13, mounted in respective outer blocks 14, 15, are applied to the faces 16, 17 of the central assembly with metal or plastics spacers between polepieces 9, 12 and 10, 13 to form transducing gaps 7, 8. The sleeves 3, 4 are then slid over respective blocks 14, 15 and respective parts of block 11, and the shield 5 is located between parts of sleeves 3, 4 received in the central slot of block 11. The assembly is then located in the outer sheath 6, encapsulated in epoxy resin, the block 11 is cut to length L to remove the protruding part 20 and the working face is machined and lapped to a flat or profiled surface exposing transducing gaps 7, 8. A multitrack head may be produced in a similar manner.
Patent GB-422516-A (GB)
Title: Improvements in or relating to the spreading of aqueous dispersions of rubber and the like
IPC: B29C70/68
Filed: 1934-02-09
Abstract: 422,516. Coating webs. MoKAY, R. F., Fort Dunlop, Birmingham.-(International Latex Processes, Ltd.; 10, Lefebvre Street, St. Peter's Port, Guernsey) Feb. 9, 1934, No. 4295. [Class 140] Aqueous dispersions of, or containing, rubber or the like are spread upon a fabric or other base which is fed over a support 19 and under a spreader 27 which extends, at its lower end, parallel to the direction of feed of the fabric with which it forms a spreading nozzle. The spreader may be shaped to produce a corrugated coating. As shown, the support 19 is a roller which is rotated by a belt drive 18, and the roll 14 of fabric is carried on a rotary shaft 13, the fabric being pulled over the support 19. A part 26 of the spreader 27 is secured to the lower edge of a crossbar 23 which is vertically adjustable, to vary the thickness of the coating, by adjusting the securing bolts 24 in slots 22 in a stationary crossbar 21. The passage between the spreader and the fabric is closed at the sides by transversely adjustable vertical plates. Specification 17145/96, [Class 140], is referred to.
Patent GB-1080662-A (GB)
Title: Production of silicon tetrafluoride
IPC: C01B33/08
Filed: 1965-02-02
Abstract: A mixture of silicon tetrafluoride and water vapour is generated by reacting hydrogen fluoride with silicon dioxide suspended in sulphuric acid.  The suspension is maintained at a temperature between 225 DEG  and 600 DEG  F.  The silica can be in the form of sand, and the sulphuric acid concentration is between 50% and 90% by weight.  The silicon tetrafluoride may be hydrolysed to give silicon dioxide and the hydrogen fluoride produced recycled.
Patent GB-1490070-A (GB)
Title: Electrical circuit and apparatus and method of operating same for making measurements on differently coloured features
IPC: G01N15/14
Filed: 1974-01-31
Abstract: 1490070 Analyzing features according to colour METALS RESEARCH Ltd 27 Jan 1975 [31 Jan 1974] 04468/74 Heading G1A Apparatus for this comprises an optical system 12 passing light through say a microscope slide 22 and filters 14 and 16 passing light according to wavelength to scanners 18 and 20 whose output video signals vary in magnitude in accordance with the intensities of their respective images and are fed to comparators 26, 28 each generating, whenever the signal bears a certain relationship to a reference voltage, constant amplitude pulses which make gates 62 or 64 pass the output signals, which are then stored in computers 54 or 56; an OR gate 32 producing a train of constant amplitude pulses corresponding to the superimposition of the two images, detector 36 containing a delay device and generating, when the undelayed composite signal has no pulse corresponding to one in the delayed composite signal, an anticoincidence signal which operates gates 48, 50, 66 and 68 to release information from the computers. Computers 44 and 46 compute areas of cells. Comparator 52 releases the higher of two area values. The video signals may be converted to signals which are proportional to the logarithm of their magnitude so that computers 54, 56, generate a signal corresponding to integrated optical density, the ratio of which may be determined by circuit 70 producing a count pulse on line 71 if the ratio is above a critical value and on line 73 if it is below. A second embodiment, Fig. 4 (not shown), differing in detail, is described. Applications described are the distinguishing of non-nucleated blood cells stained with red and blue dyes, the distinguishing of nucleated cells according to the staining of the nuclei, and the classification of cells according to both size and colour.
Patent GB-295002-A (GB)
Title: Improvements in or relating to cooling apparatus for use in sweetmeat manufacture
IPC: A23G7/02
Filed: 1928-02-13
Abstract: 295,002. Berten & Co., Ges. Aug. 4. 1927, [Convention date]. Cooling confectionery.-Sweetmeats are delivered from a shoot to sector-shaped sieved trays b removably mounted in a rotatable table a, and a current of air is directed on to them through a centrallydisposed nozzle d.
Patent GB-129228-A (GB)
Title: Process for Moisture-proofing Matches.
Inventor: JOHNSTON FRED
IPC: C06F3/00
Filed: 1919-02-25
Abstract: 129,228. Johnston, F., and Orr, A. Feb. 25, 1919. Matches.-The heads and adjacent parts of the stems of matches are waterproofed by dipping the matches head downwards in a molten mixture of about two parts by weight of resin and one part by weight of beeswax. Before the dipping process, the mixture is heated to boiling-point, thoroughly agitated, and then allowed to cool down through 10‹ F.
Patent GB-572031-A (GB)
Title: Improvements in the manufacture of metal moulds, dies and the like
IPC: C23C4/18
Filed: 1944-03-13
Abstract: 572,031. Making moulds and dies. LUCAS, Ltd., J., and HUTTON, J. M. March 13, 1944, No. 4650. [Classes 83 (ii) and 83 (iv)] Building up articles by spraying.-A mould, e.g. for use in making articles from synthetic resins, die, work-holder or other article made by spraying ferrous alloy or other metal onto a pattern and then stripping, is improved by coating the patterned face with copper or other metal, having a melting point between that of the body metal and the temperature of use, and then heating said mould &c. to fuse said layer, thus causing substantially all of it to be absorbed by the body metal. The coating may be applied by electro-deposition or spraying and a thickness of 0.015" is usually sufficient. The heating is done in reducing' or protective gas.
Patent GB-831991-A (GB)
Title: Improvements in or relating to ophthalmic instruments for testing near phorias
IPC: A61B3/02
Filed: 1957-02-11
Abstract: 831,991. Ophthalmic instruments. GASSON, W. May 9, 1958 [Feb. 11, 1957], No. 4657/57. Class 97(1) An ophthalmic instrument for testing near phorias comprises a distance member with a locating device at the front end to engage the patient's face and a screen at the other end with a light source attached to it, and a scale marked on it for determining the position thereon of a line image produced by the light source and a lens device when supported in front of one of the patient's eyes. As shown a telescoping distance member 10 has at one end pads 12 for engaging the chin of a patient and is pivoted at 13 to a screen 15 provided with a diagonal scale 30, an aperture 22 and an object 29. Behind the aperture there is a battery operated lamp in a housing which may have a hood 27. The patient views a line image formed on the screen by the light source and a Maddox groove or a trial lens placed in front of one eye, said Maddox groove being rotatable about an axis at 45 degrees to the horizontal so that it can be turned from back to front and at the same time shifted through 90 degrees about the optical axis, thereby changing the line from a horizontal one to a vertical one. The hood 27 and the screen 15 can be removed so that the instrument can be used as an ophthalmoscope or a retinoscope.
Patent GB-585659-A (GB)
Title: Improvements in high frequency electrical oscillators
IPC: H01J25/16
Filed: 1942-04-10
Abstract: 585,659. Velocity - modulated tubes. TRICKER, R. A. R., and WRIGHT, C. S. April 10, 1942, No. 4702. [Class 39 (i)] In a velocity-modulated discharge tube, tuning of the resonators is effected by (i) a plunger 10, Fig. 1, or (ii) in varying the shape of the walls 9 of, a portion of the resonator, wholly outside the envelope walls 2, the axis of this portion being at right angles to the main axis A.A. The other resonator portion comprises the discs 5, joined by a part annulus 8. In a reflector oscillator the toroid portion 11 and reflector 13, Fig. 3, is wholly within the envelope 14.
Patent GB-365360-A (GB)
Title: Improvements in tyre covers
IPC: B65D85/06
Filed: 1931-02-14
Abstract: 365,360. Covers for tyres. RYERSON & HAYNES, Inc., 2307, East Granson Street, Jackson, Michigan, U.S.A.-(Assignees of Ryerson, C. W.; 565, Wildwood Avenue, Jackson, Michigan, U.S.A.) Feb. 14, 1931, No. 4712. Convention date, May 23, 1930. [Class 94 (ii).] A tyre cover comprises a metal sheath adapted to cover part of the tyre and a metallic projecting portion capable of being flexed and drawn about the remaining part of the tyre. A trough section metal annulus 1 is lap-jointed to an outer section 5 formed with a serrated edge comprising tongues 6 which are bent to channel form at their ends to accommodate a wire 7. One end of the wire 7 is anchored at 17, Fig. 4, to a plate 13 secured to or a bent up portion integral with the section 5 and the other end is adjustably secured to a locking-lever 10 pivoted on the plate 13 and adapted to draw up the wire and thereby bend down the tongues 6 to secure the tyre in the sheath. Three tongues 6<1> adjacent the lever 10 are disposed beneath the wire and may be secured together or be formed integrally with one another. In modifications, the end of the wire is pulled through a clamping device and the lever 10 is dispensed with or the tongues 6 are made resilient so that they spring back to the inoperative position after being released by a cord, which replaces the wire 7.
Patent GB-1200034-A (GB)
Title: Hydraulic apparatus
Inventor: FLORJANIC PETER
IPC: F15B15/20
Filed: 1968-01-30
Abstract: 1,200,034. Injection moulding; presses. P. FLORJANCIC. 30 Jan., 1968 [13 Feb., 1967], No. 4757/68. Headings B5A and B5F. A movable part 11 of an injection mould on a  platen 8 is closed with a stationary part 10 on a platen 2 in two stages by an hydraulically operated piston-and-cylinder 5, 1; in the first stage pressure liquid supplied at 17 to chamber 6 moves the piston and hence the platen 8, which is connected thereto by rods 9, during which movement liquid flows from chamber 7 to chamber 6 via a bore 22 in the piston. When the mould approaches the closed position a pin 28 on the platen 2 pivots a lever 26 causing a valve 23 gradually to close the bore 22 whereupon the chamber 7 is connected to exhaust, e.g. to a fluid supply reservoir, via an outlet 18 and valve 19, and the second stage is effected. The mould part 11 is retracted by hydraulic pistons 14 connected to the platen 8 by rods 15. In a modification the stem of the valve 23 extends from the rear wall of the cylinder in an adjustable manner. Alternatively, the chambers on opposite sides of the piston are interconnected by a valve arrangement comprising a cylindrical liner within the cylinder which, when the piston is in a forward position, co-operates with the piston periphery. In a further embodiment the chambers are interconnected by a valved passage in the cylinder wall. Instead of moving part of an injection mould, the hydraulic apparatus may be associated with the movable member of a press.
Patent GB-1456984-A (GB)
Title: Safety razors
IPC: B26B21/38
Filed: 1973-01-31
Abstract: 1456984 Razors GILLETTE INDUSTRIES Ltd 22 Jan 1974 [31 Jan 1973] 4905/73 Heading B4B A safety razor comprises at least one blade 21 and cooperating guard surface 5, the blade being mounted for movement relative to the guard surface and means 9, 16, 18 for rapidly reciprocating the blade so that its cutting edge moves towards and away from the guard surface. As shown a pair of blades 21, Fig. 3 are clamped between a pair of plastics members 22, 23 to form a composite blade unit, the plastics members may be replaced by stainless steel connected by spot welding. The unit is retained by a spring (27) Fig. 1 (not shown) on the end of a lever 18 pivoted at 19, the lever being oscillated by an eccentric 16 formed on a shaft 13; the shaft is rotated by a motor 9 energized by a battery 10. An elastomeric sleeve 20 is provided for preventing entry of shaving debris into the motor. In modifications the cutting edges of the blades may face in the same direction or the unit may only include a single blade.