baber/WOPTO huggingface dataset:
Patent GB-1177533-A (GB)
Title: Steam Generator for an Atomic Power Generating Plant.
IPC: F22B1/06
Filed: 1967-01-13
Abstract: 1,177,533. Generating steam by indirect heat transfer. JAPAN ATOMIC ENERGY RESEARCH INSTITUTE and NIPPON KOHKAN K.K. 13 Jan., 1967 [14 Jan., 1966], No. 1913/67. Heading F4A. Liquid sodium coolant from a nuclear reactor (not shown) is passed through vertical tubes 2 extending between inlet nozzle 1 and outlet nozzle 3 of a steam generator casing 7. Water from inlet 4 flows in counter current through vertical, zig-zag or helical tubes 5, the steam so generated emerging through nozzle 6. Heat is transferred between the tube systems 2, 5 by liquid sodium acting as a heat transmission medium, which is introduced at inlet 9 and removed through outlet 10, to maintain a surface level 11. The level 11 may be varied to vary the rate of heat transfer in accordance with the load demand. The top space of the generator body contains an inert gas introduced through nozzle 13 and removed through nozzle 14. One or more rupture discs 15 may be provided in the casing 7. The generator may be of the through flow or recirculation types. It is stated to be known to heat an intermediate fluid by the coolant from the reactor core, in a separate heat exchange vessel located within or without the vessel containing the reactor, and then to circulate this intermediate fluid over steam generating tubes contained in a further vessel (Figs. 1 and 2, not shown).
Patent GB-732396-A (GB)
Title: Improvements in negative feed-back systems incorporating magnetic amplifiers
Inventor: MILSOM FREDERICK ROGER
IPC: G05D3/14
Filed: 1953-01-22
Abstract: 732,396. Automatic control systems. SMITH & SONS (ENGLAND), Ltd., S. Jan. 15, 1954 [Jan. 22, 1953], No. 1928/53. Drawings to Specification. Class 38 (4). [Also in Group XXXVIII] The invention relates to the correction of drift in closed loop servo systems using magnetic amplifiers. According to the invention the error signal is modulated at a frequency low compared with that of the power supply to the main magnetic amplifier (e.g. 10 c/s. with a 400 c/s. supply), and the L.F. modulated signal is fed to an auxiliary magnetic amplifier and then demodulated to produce a correction signal which is comparatively large for very low frequency components, i.e. drift. This correction signal is applied together with the error signal to the input (or inputs) of the main magnetic amplifier.
Patent GB-1236551-A (GB)
Title: Improvements in tufting machines
Inventor: PICKERING EDGAR
IPC: D05C15/20
Filed: 1969-01-13
Abstract: 1,236,551. Tufting machine. EDGAR PICKERING (BLACKBURN) Ltd. 13 April, 1970 [13 Jan., 1969], No. 1940/69. Heading DIG. A tufting machine is adapted to produce both fine and wider gauge work by providing a needle bar which is split longitudinally into front and rear sections 1, 2 each carrying a row of needles 6, 7 and a threader plate 8, 9, the needles in the two rows being staggered relatively to each other when the sections are assembled, the sections being individually detachable from the needle bar reciprocating mechanism. To change to wider gauge work either section 1, 2 is removed, leaving its yarns threaded through its needle eyes, and replaced by a dummy section.
Patent GB-793621-A (GB)
Title: A method of grinding helical cutting edges on tools, more particularly milling cutters
IPC: B24B3/04
Filed: 1954-07-06
Abstract: 793,621. Grinding helical cutting edges. SCHUTTE, A. H., COMMER, G., WELCKER, L., THEN, E. and PECHMANN, E. F. Von. [trading as SCHUTTE, A. H. [Firm of]]. July 6, 1954 [July 9, 1953], No. 19791/54. Class 60. A method of gririding helical cutting edges on tools, more particularly milling cutters, using a swivelling grinding head having a cup wheel, is characterized in that the grinding wheel spindle is swung by the amount of the desired angle of clearance about an axis which lies outside the grinding wheel frontal surface and in a plane parallel to a line generating the tool surface by rotation, the axis in turn being adjusted in the said plane by the amount of the helix angle of the tool. The spindle 18 of the cup grinding wheel 51 rotates in a sleeve 17 supported by cross pins 19 in a ring 22 mounted in a housing 20. The ring 22 is rotatably adjusted to the helical angle of the tool, a scale 24 being provided for this purpose. The sleeve 17 is adjusted about the pins 19 to the clearance angle, a scale 25 being provided for this purpose. The spindle 18 is driven by a motor 26 supported by a bracket 27 on the sleeve 17 ; a pin 28 on the housing 20 engages in a slot in the bracket 27. In a modification the motor is mounted by cross pins in the ring 22 and the grinding wheel is mounted on the motor shaft.
Patent GB-379215-A (GB)
Title: Improvements in boilers for washing clothes and for like purposes
IPC: D06F1/08
Filed: 1932-01-22
Abstract: 379,215. Washing-boilers. AKTIEBOLAGET LAVATOR, 7, Nybrogatan, Stockholm.-(Assignees of Adelsohn, A. H. ; 34, Linnegatan, Stockholm.) Jan. 22, 1932, No. 2023. Convention date, Jan. 23, 1931. [Class 64 (i).] A boiler comprises an outer vessel 1 and an inner vessel 2 containing the wash and spaced from the bottom of the outer vessel to form a compartment 7 containing the washing liquid, which when heated is forced by the pressure of the vapour generated upwards through the passage 8 between the vessels and over the top of the wash, the outlet 12 from the inner vessel to the compartment being closed by a float 11. The sides of the inner vessel are extended downwards below the bottom 4 of the chamber, and the outlet 12 has a tubular extension 17 containing the float 11 and opening into the bottom of the compartment 7. Most of the washing liquid is therefore forced by the vapour pressure through the passage and over the perforated lid 10 above the wash before the liquid escapes from the tubular extension and allows the float to fall. The liquid above the perforated lid 10 is then sucked down through the wash and together with the liquid between the false bottom 3 and the bottom 4 flows into the compartment 7. The lid 18 of the outer vessel is hollow and contains rinsing water which is heated by the hot water and vapour forced up through the passage 8. The bottom 5 of the outer vessel is corrugated to increase the heating surface.
Patent GB-347217-A (GB)
Title: Improvements relating to the extraction of saccharose from cane molasses
IPC: C13B35/04
Filed: 1930-01-21
Abstract: Saccharose is extracted from cane molasses by diluting the molasses with a substantial quantity of aqueous liquor obtained by the washing of insoluble organic barium compounds, and then treating with baryta for the destruction of reducing sugars and to obtain a purified saccharose solution suitable for treatment on generally known lines. After the addition of baryta the mixture is heated, stirred and filtered to separate the insoluble organic barium compounds from the soluble organic barium compounds, the alkaline salts, and the saccharose.  The insoluble organic compounds are washed with water and the wash waters are collected, and these are used for diluting a further quantity of molasses. Barium hydrate in the proportion of about two molecules thereof to one molecule of contained saccharose is added to the solution to precipitate barium saccharate which is carbonated to produce sugary juice and barium carbonate.  All traces of barium are eliminated from the sugary juice by adding a small quantity of an alkaline salt such as sulphate or carbonate.  An example of the process is given.
Patent GB-560518-A (GB)
Title: Improvements in and relating to crushers
IPC: B02C4/28
Filed: 1943-02-08
Abstract: 560,518. Endless belt conveyers. ROSS, W. Feb. 8, 1943, No. 2082. [Class 78 (i)] [Also in Group II] In a crushing apparatus for raw ores, stones, &c., barrier rollers 5 arranged below the crushing rollers 1 to intercept the larger pieces and disperse them sideways for delivery on to the conveyer belt 3 and the side walls 7 of the delivery chute may be substantially vertical so as to diminish the adhesion of sticky fine material impinging thereon. The rollers 5 may rotate all in the same direction or those on one side of the central vertical axis may rotate in one direction and those on the opposite side in the opposite direction. The outer rollers may be of corrugated or toothed form. The side walls may alternatively be stepped, the lower parts of the walls being concave and o f steeper inclination than the upper parts. In a further construction the side walls include flexible or articulated elements.
Patent GB-673194-A (GB)
Title: Float instruments
IPC: G01C9/20
Filed: 1950-01-26
Abstract: 673,194. Magnetic compasses; levels; determining specific gravity. HEWITT, J. C. Jan. 26, 1950, No. 2087/50. Classes 97 (ii) and 97 (iii). In a float instrument such as a levelling instrument, inclinometer, hydrometer, levelling support for a floated mirror, or compass, a float freely carried by the liquid 12, Fig. 2, has an upstanding extending rim portion 20 which contacts the liquid meniscus to centre the float. A transparent spherical container 10 somewhat more than half filled with a liquid 12 such as perchlorethylene houses a float of less specific gravity than that of the liquid. The hemispherical shell 15 which constitutes the float is formed with openings 17, 18, and with the upstanding rim 20 which contacts the meniscus to prevent the float from engaging the inside wall 11 of the container. When used as a compass, the float carries a magnetized bar 22. In a modification, Fig. 5, in which the container 23 is cylindrical, its base has a central guide 28. The disc-shaped float 29 is apertured at 31 with the edges of the aperture forming an upwardly inclined rim 33 which engages the meniscus to centre the float. The top surface of the float may be stepped and apertures 291 provided therethrough. In a further modification the float is hemispherical and provided with a central aperture which surrounds a spherical guide supported from the roof of the container. An upwardly inclined rim to contact the liquid meniscus is formed at the edge of the aperture and the cubic container has a spherical cavity therein to receive the float and liquid. In a further embodiment, Fig. 7, the spherical float 52 lies within an aperture formed in a disc-shaped guide 54, whose inner and outer upstanding rims 59 and 60 coact with the liquid meniscus to centre both the float and guide. In an alternative arrangement the disc-like guide is formed as a flange integral with the walls of a cylindrical chamber. In any of the embodiments the slope of the upstanding, meniscus-contacting, rim, may be such as to maintain the float at approximately constant level despite variations of specific gravity and surface tension of the liquid resulting from temperature variations.
Patent GB-675729-A (GB)
Title: Improved means for separating beet and like root crops from earth and other matter
IPC: A01D17/00
Filed: 1951-01-27
Abstract: 675,729. Beet harvesters. SILK, O. A. Jan. 27, 1951. No. 2125/51. Class 6(iii) In a beet harvesting machine, means for separating beet from earth comprises a conveyer 23 which passes over two spaced sets of sprockets 16, 17 arranged to rotate in the same direction and at the same speed to maintain a sagging portion 24 of the conveyer between which the beet is agitated and discharged to a transverse conveyer 30. As shown the beet is lifted by discs 3 which may be as described in Specification 584,342 and passes up between the conveyer 23 and a pivotally mounted grid 50. A guide plate 27 ensures that the beet is discharged on one side only of the conveyer 23. The conveyer 30 comprises spaced slats 33 provided with tines 34 and guide rods 36 assist the passage of the beet which is discharged at the top of the conveyer into a trailer. The conveyers are driven from the tractor power shaft 19 through a clutch 58 and gear-box 20 and the machine is supported by tractor lift links 6, 7. Caster wheels 11 are provided for varying the depth of working of the machine. The machine may be used in conjunction with a machine for topping beet as described in Specification 615,095.
Patent GB-908080-A (GB)
Title: Treatment of particulate materials
IPC: B03D1/14
Filed: 1959-01-20
Abstract: A liquid reagent is applied to at least a selected component of a particulate material prior to flotation thereof by contacting an air suspension of the reagent with an air suspension of the material. The method is particularly applicable to the addition of collectors and other conditioning agents to ores.  The rate of supply of the reagent may be controlled so that (a) it is applied to a selected component of the material only as in the application of tall oil to manium ore, or (b) it is applied to all components of the material as in the application of a xanthate to sulphide ores, or (c) the application of the reagent to the material proceeds only to a predetermined extent.  The method may also be used for the application of a sulphidizing agent, e.g. sodium polysulphide, to badly sulphidized ores.  As described, the reagent is fed through fog nozzles into the air circuit of the dry-crushing and grinding plant of Specification 867,228. Specifications 632,532 and 696,137 also are referred to.
Patent GB-1245373-A (GB)
Title: Abrasive tool and manufacture thereof
IPC: B24D3/32
Filed: 1970-01-16
Abstract: 1,245,373. Moulding abrasive wheels. NORTON CO. 16 Jan., 1970 [16 Jan., 1969], No. 2174/70. Heading B5A. [Also in Division C4] An abrasive tool e.g. a grinding wheel preferably has a density between 0À22 and 3À48 gm/cc. and comprises particles of resilient cellular thermoset organic polymer containing abrasive grains, the particles being bonded by a cured resilient organic polymeric binder. The foamed polymer is preferably polyurethane and the binder may be foamed or unfoamed polyurethane or a phenol-formaldehyde condensation polymer. The tool is manufactured by foaming and curing a mixture abrasive particles and resilient organic polymer, shredding the foamed mixture to particles of 1/32-1/2 inch, coating the particles with the curable binder, placing the coated particles in a mould, applying pressure to the mould to compress the particles to the required density and curing the binder while the particles are compressed. The binder may be cured at room temperature or by heating depending on its chemical constitution. The weight ratio of abrasive to polyurethane in the foams is between 1:2 and 8:1, 10-20 wt. per cent of binder relative to the foam is added to the mixture and the final product has a volume ratio of abrasive to polyurethane (exclusive of porosity) between 1: 4 and 2: 1. The abrasive is preferably one of alpha alumina, silicon carbide, alumina-zirconia, garnet, quartz, boron carbide, emery or flint.
Patent GB-371872-A (GB)
Title: Improvements in and relating to the production of gelatine reliefs
IPC: G03C7/25
Filed: 1931-01-22
Abstract: 371,872. Gelatin reliefs. SYNCOMEX STUDIEN & FINANZIERUNGES., 18, Kappelergasse, Zurich, Switzerland. Jan. 22, 1931, No. 2219. Convention date, Jan. 22, 1930. [Class 98 (ii).] Gelatin reliefs for imbibition printing are made with silver halide films on a temporary water-releasable support, by exposure on the film. side, and subsequently mounted by a water-insoluble adhesive face downwards on a final (e.g. glass) support. The temporary supports may be of inextensible paper. The adhesive may be varnish or guttapercha. The hardening of the silver image need not be complete if the relief is produced without first drying the image. Emulsions with reduced silver content may be used. Alternatively the alkali and sulphite content of the developer can be reduced. To avoid high reliefs, light. absorbing bodies can be incorporated in the sensitive layer. A water-soluble colloidal substratum, which may contain a non-actinic dye, may be used on the temporary support. For transfer purposes (a) the exposed and developed film may be mounted with adhesive between the final support and the film, and the relief produced with warm water which releases the temporary support ; (b) the adhesive may be applied to the final support and the relief treated with adhesive softening means ; or (c) thin sheets soaked in adhesive may be interposed between the relief and the final support, and the relief mounted by pressure and heat.
Patent GB-575015-A (GB)
Title: Improvements in lens holders
IPC: G02B7/02
Filed: 1944-02-07
Abstract: 575,015. Tongs. ABBEY, A. (American Optical Co.). Feb. 7, 1944, No. 2254. [Class 61 (ii)] Spring-grip lens holding tongs adapted to exert the same gripping pressure, whether the jaws are close together as for gripping one lens or wider apart as for gripping a number of lenses, comprises a pair of arms 6, 7 urged apart by a bow spring connecting the rear ends of the arms and a pair of forked jaws, one jaw 14 screwed to the arm 6 and the other jaw pivoted at 22 to a bracket 19 on jaw 14 and connected by a pin 26 and slot 25 to a yoke 23 screwed to the end of the arm 7, the pin and slot being so disposed that the lessened spring pressure on the jaw 17 when the arms are wider open acts over a longer leverage about the pivot 22, thus producing a constant pressure of the gripping jaw fork 10 on a single lens or on a number of lenses 11.
Patent GB-432212-A (GB)
Title: Improved method of coating ferrous bodies with other metals
IPC: C23C2/02
Filed: 1934-01-23
Abstract: 432,212. Coating with metals. RODRIGUEZ, A. O., Valverde-Leganes, Badajoz, Spain. Jan. 23, 1934, No. 2346. Convention date, Feb. 24, 1933. [Class 82 (ii)] A metallic coating free from pores, spots, &c., is obtained on ferrous metal articles by heating the articles in an atmosphere of reducing and decarbonizing gases or vapours in the nascent state, passing the articles through a bath of molten metal the surface of which is not in contact with the reducing and decarbonizing gases or vapours, and finally cooling and smoothing the coating. In the form shown an iron wire 7, which has previously been cleaned, for example by treatment with acid and alkaline solutions, washing, and drying, is drawn from a roll 8 and passed into a hollow tube 1 connected to a retort 9. The tube 1 may be so constructed that a plurality of wires, tapes, sheets, &c., may be treated simultaneously. The retort 9, the tube 1, and the coating pot 4 are located in a furnace and heated to about 500-700 C., Ammonium chloride is introduced into the retort 9 and the vapours formed pass into the tube 1 and react with the iron wire causing the formation of hydrogen and ammonia in the nascent state which combine with the carbon and reducible impurities on the wire, the resulting products being discharged in vapour form at the open end 12 of the tube 1. A mixture of ammonia and hydrochloric acid which react together to form ammonium chloride, may be introduced into the tube 1 instead of ammonium chloride vapours. The heated wire passes from the tube 1 into a bath 3 of molten aluminium, the metal being covered by a deep layer 13 of reducing or inert material which serves to protect the cleaned wire from oxidation and to prevent contact between the ammonium chloride vapours and the surface of the molten metal. Alternatively the bath may be covered with a thin layer of powdered or liquid reducing or inert material and the oxidation of the wire prevented by the vapours issuing from the tube 1. The coated wire is then passed through an opening 14 in a metal die 6, the heat radiating capacity of the die being such that a pasty mass of excess coating metal which exerts a cooling and smoothing action on the coated wire is maintained in the opening 14.
Patent GB-195484-A (GB)
Title: Improvements in or relating to electric connectors
IPC: H01R13/595
Filed: 1922-01-26
Abstract: 195,484. Collins, G. H., and Collins, H. F. Jan. 26, 1922. Plug connectors.-A clamping block 4 is located in a laterally extending opening in the side of the body of a connector containing electric contact members and is adapted as by a screw 6 to clamp the conductors 12. Two co-operating clamping blocks, similarly arranged, are used in a modification.
Patent GB-558092-A (GB)
Title: Improvements in or relating to fuel injection systems for compression-ignition engines
IPC: F02D1/00
Filed: 1940-02-07
Abstract: 558,092. Valves. HINCHCLITFFE, S. Feb. 7, 1940, No. 2379. [Class 7 (vi)] A rotary distributing-valve for supplying fuel from the cylinders of a pump D to the fuel injectors C<SP>1</SP> ... C<SP>4</SP> on the engine cylinders is formed with a control port having an inclined leading edge 10a, so that the timing of the injection may be varied by axial adjustment of the valve. In the form shown, the fuel flows in a closed circuit from the pump cylinders 1 ... 4 to corresponding ports 1, 2, &c., in the casing of the rotary valve, and then through ports 6, 7 in the valve to a space E connected by passages 8, 9 to the return pipes of the pump cylinders, the pressure of the fuel being regulated by a valve in the space E under the control of an adjustable spring F. Adjacent the port 6 is a second port 10 having the inclined edge 10a and communicating with the annular recess 9. The circulation of the fuel in the closed circuit is therefore interrupted as the part of the valve between the ports 6 and 10 passes over the casing ports 1, 2 &c. during which period injection occurs. In a modification a single pump cylinder supplies fuel continuously to a valve port co-operating with a series of ports in the valve casing connected to the ports 1, 2 &c. Two successive injections in each cylinder may be obtained by providing a further valve port between the ports 6 and 10. In another form the port 6 and the valve at E are omitted, injection occurring except when the port 10 passes over the casing ports-1, 2 &c.
Patent GB-434272-A (GB)
Title: Improvements in or relating to knitting machines, particularly latch needle machines, and knitted fabrics
IPC: D04B15/00
Filed: 1934-01-24
Abstract: 434,272. Knitting-machines. BOOTON, W. E., Ross Works, Wanlip Street, Leicester, MILLS, R. K., 3, Edwards Lane, Sherwood, and HOSIERY DEVELOPMENTS, Ltd., 30, Park Row, both in Nottingham. Jan. 24, 1934, No. 2479. [Class 74 (ii)] Relates to the production of openwork fashioning or webbs by transfer of needle loops. The invention is described as applied to a circular machine with independent latch needles. Each transfer instrument 10 consists of a forwardly directed forked or hollow hook 13 of a span sufficient to receive the head of a needle. The instruments 10 may be mounted to slide in a tricked upper bed 31 divided into sections for independent shogging. This bed may surround the upper needle bed 21 of a superposed-cylinder machine. Each instrument has a number of outer butts and an inner notch 34 which normally rests on the point 33 of a jack 32 mounted in the same tricks. These jacks push the devices 10 outwards clear of the track of the needles, when it is desired to pass needles from one cylinder to the other. The jacks are driven by a rotating cam box 35 while the devices 10 are selected and moved by a rotary battery of cams 37. A battery of cams 73 in the lower cylinder act on the butts of jacks 38 disposed below sliders 25 to cause needles to co-operate with the devices 10 in the production of transfer stitches. Each section of the bed 31 is attached to a ring 45A .. 45D and is shogged when the appropriate cam 50 on a drum 48 raises a feeler 51 connected to a shogging pawl 47. The shogging may be effected by other means such as epicyclic gearing. When applied to bearded-needle machines the devices 10 may act as pressers. Specifications 275,614, 329,098, 330,041, [all in Class 74 (ii)], and 376,837 are referred to.