baber/WOPTO huggingface dataset:
Patent GB-1456263-A (GB)
Title: Outokumpu oy process for producing a starting material suitable for iron production from a precipitate from an electrolytic zinc process
IPC: C22B3/00
Filed: 1974-01-30
Abstract: 1456263 Haematite recovery OUTOKUMPU OY 30 Jan 1974 [1 Feb 1973] 4338/74 Heading C1A A process for manufacturing a starting material suitable for iron production from a precipitate obtained in the electrolytic zinc process and mainly containing basic sulphates of iron and/or ferrites, and for recovering other metals present in the precipitate in a dissolved form, comprises treating a slurry of the precipitate having a solids content of 200-800 g./l. in water or dilute sulphuric acid solution hydrothermally at 150-280 C. and controlling the temperature and solids content within the ranges specified such that the system remains within the stability range of haematite, Fe 2 O 3 , in the system Fe 2 O 3 -SO 3 -H 2 O, and then separating the haematite-containing solid suitable for iron production from the solution containing the other metals. The precipitate may contain glockerite Fe 4 SO 4 (OH) 10 , ferrihydroxosulphate, FeSO 4 OH, jarosite, A[Fe 3 - (SO 4 ) 2 (OH) 6 ], in which A is an alkali metal, NH4, or H 3 O, and zinc ferrite ZnFe 2 O 4 .
Patent GB-951000-A (GB)
Title: Snap fastener
IPC: A44B17/00
Filed: 1962-02-05
Abstract: 951,000. Stud and socket fastenings. C. MARCKMAN-HANSEN. Feb. 5, 1962, No. 4396/62. Heading E2B. A snap fastener comprises a male part and a female part both of which parts are made of a resilient plastics material, a bulbous head 10 on the front face of the male part, a blind cavity 6 in the female part, the blind cavity 6 having its mouth 7 on the front face of the female part and being adapted to receive the bulbous head 10 of the male part with snap action, and a peripheral flange 12 and 4 on each of the male and female parts, the peripheral flange and the rear face of each of the two parts being so provided that a flexible sheet 13 and 3 can readily be brought into contact with the whole of the rear face of each of the two parts. Decorative designs may be formed on the parts of the sheet covering the male and female parts.
Patent GB-683739-A (GB)
Title: Improvements in or relating to refrigerator cabinets
IPC: F25D23/08
Filed: 1951-02-23
Abstract: 683,739. Refrigerators. COOLERATOR CO. Feb. 23, 1951 [Sept. 1, 1950], No. 4427/51. Class 29 A breaker strip 35 for refrigerator and like cabinets has bifurcated edges 40a, 40b and 41a, 41b the edge 40b having an inwardly-projecting portion 49 and the edge 41b having an outwardly flaring portion 44, the bifurcations engaging opposite edges 25, 28 of the outer casing 14 and the inner shell 12 at the door opening. The inner shell 12 is secured to the outer casing 14 by brackets 32, 33 welded to the casing and shell and connected by a bolt 34 and spacer block 36. The breaker strips 35 of extruded plastic material are curved in cross section and sprung into place, the tongues 40a, 40b being first forced over a reversely bent flange 25 on the edge of the outer casing 14 so that the projection 49 latches over the edge of the flange. The opposite tongues 41a, 41b are then sprung over the adjacent edge 28 of the inner shell 12: The tongue 41b is cut away to accommodate the brackets 33. The corners are filled by pre-formed sections screwed in position. Reference has been directed by the Comptroller to Specification 557,295.
Patent GB-477239-A (GB)
Title: Improvements in tubular heat exchange apparatus particularly applicable to fuel oil heaters
IPC: F28D7/10
Filed: 1937-02-15
Abstract: 477,239. Plate heatexchangers. TODD COMBUSTION EQUIPMENT, Inc. Feb. 15, 1937, No. 4440. Convention date, Feb. 15, 1936. [Class 64 (iii)] A heat-exchanger particularly for heating oil fuel comprises a casing having tangential oil &c. inlet and outlet ports 21, 22 respectively and through which extends a stream &c. pipe 3 upon which are threaded spirally-ribbed sleeves aligned by means of dowel pins 17 to form a continuous spiral. The sleeves are clamped together by means of plain end sleeves 5, 11 and the casing cap 7. The sleeves are formed with additional fins 16 to promote the heat exchange. In a modification, the fins 16 are omitted.
Patent GB-118565-A (GB)
Title: Improvements relating to Printer's Chases.
Inventor: WILSON HALSEY WILLIAM
IPC: B41B1/18
Filed: 1918-03-14
Abstract: 118,565. Wilson, H. W. March 14, 1918. Chases.-To ensure register and uniformity of the head margins of pages on opposite sides of the sheet in bookwork, the type-pages are enchased with the heads abutting on rigid members of the chase, and pressure is applied at the feet. The chase 2 shown is provided with notches 6, 7 for securing cross-bars 4, 5. The type-pages 8, 8<1> for one side of a sheet are all arranged with the heads abutting on the cross-bars, strips 17 being interposed to determine the head margins, and quoins 11 are applied at the feet. Furniture 15, 16 is arranged between the pages, and in the case of the short pages 8<1>, furniture 12 is applied at the feet In enchasing the type-pages for the opposite side of the sheet, the cross-bars are arranged in the same position and the same furniture 15, 16, 17 is employed. In a modification, a chase of the form shown is formed from three separate chases, the sides of the chases performing the functions of the cross-bars 4, 5.
Patent GB-393031-A (GB)
Title: Improved see-saw
IPC: A63G11/00
Filed: 1932-02-16
Abstract: 393,031. See-saws. SHAW, C. H., 120, Walter Road, Swansea. Feb. 16, 1932, No. 4572. [Class 132 (i).] A see-saw consists of a rocker 5 pivoted on a -frame and adapted to be rocked by pulling on cords, resilient means such as springs 7 and buffers 5a to absorb shocks and jolts when the rocker reaches the end of an oscillation and releasable drop-down supports 12 hinged thereto for supporting the rocker to facilitate mounting and dismounting. The rocker carries seats 9 provided with straps and having recesses 11 for the reception of plates of lead &c. to correct the balance of riders of different weight or to counterbalance a single rider. The see-saw may be rocked by the riders pulling on cords 16 extending from the ceiling to the floor through openings 17, or on cords 21 passing from the floor through an opening near a foot rest 10, or on cords 22 passing from near each end through openings in the see-saw to the opposite end. The see-saw may also be rocked from outside by pulling on the cords 24. The supports 12 are controlled from either end by cords 13, 15. A stand 17 is provided at each end to which the cords may be attached. The springs 7 may be compression springs as shown or tension springs attached to the underside of the rockers and connected by cords to the base of the stand.-
Patent GB-585690-A (GB)
Title: Improvements in or relating to photographic shutter assemblies
IPC: G03B9/22
Filed: 1945-02-23
Abstract: 585,690. Photographic shutters. TAYLOR, TAYLOR, & HOBSON, Ltd., and CLIFFORD, T. W. Feb. 23, 1945, No. 4617. [Class 98 (i)] A photographic shutter assembly, comprising apertured front and rear bodies fitting one into the other and carrying. the shutter blades between them, has a spring or similar locating means acting radially between the two bodies to urge them into contact at two reaction points or zones lying on opposite sides of the diameter passing through the point of application of the-locating means. As shown in Fig. 2, the periphery of the annular plate-like portion B<1> of the front body has a segment B<3> cut away at the circumference, and a leaf spring A<3> riveted to the cylindrical part A<2> of the rear body acts against the adjacent rim of the front body, the location of the parts being determined by a three-point support. The bodies are secured together by flat shouldered screws B<2> with ample clearance in the aperture in the front body through which the screw passes. Three arcuate seating surfaces c<1>, c<2>, c? relieve the inner face of the rear body where it coacts with the front body, the securing screws passing through these surfaces. A helical or compression spring may replace the leaf spring A3, and the reaction zones a<2>, a<3> may be constituted by the shoulders at the end of a chordal-flat on the front body or by pimples, cylindrical pins or balls, projections or distance pieces carried by either body. Retarding mechanism of the gear train type may be accommodated in the cut-away portion.
Patent GB-705513-A (GB)
Title: Improvements in and relating to the electrostatic storage of digital information
Inventor: THOMAS GRAHAM ISAAC
IPC: H01J31/60
Filed: 1951-02-26
Abstract: 705,513. Digital electric calculating-apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 23, 1952 [Feb. 26, 1951], No. 4679/51. Class 106 (1). [Also in Group XL(c)] A method of recording digital information and of reading same, using an electrostatic storage device (C.R.T.) of the type in which each digit is recorded within a digit area on an insulating recording surface, the value of the digit being determined by the state of charge of an elemental area produced by a cathode ray beam, consists in directing the beam upon the elemental area in each of a succession of digit areas to read the information thereon, then, after reading each elemental area, directing the beam to an adjacent area of a preceding digit area and, if one kind of digit is to be recorded, switching it on in order to reduce, by release of secondary electrons, the charge on the associated elemental area. In the known art a Williams type CRT storage tube is operated with an X-time base b, Fig. 1, which holds the beam stationary for a period at each data position. The grid voltage a first switches the beam on for a brief period (t0 &c.) and then, during a subsequent period (t2 &c.), while the beam is given a slight Y- deflection, the beam is again switched on to reduce the first charge by release of secondary electrons from an adjacent area, but only when a "dash" (representing binary digit "one") is to be written. The curve c indicates the output of the reading device when "101" is being read. In accordance with the invention, in order to provide more time between the reading out and re-entry of each digit, an X-time base d is provided whereby, e.g. the reading of a digit in position 2 is followed by the writing in of a "dash" (if appropriate) in position 1 ; this is followed by the reading of the digit in position 3, and so on. The time base d can be produced by combining wave-form f and g. The output of the computor is passed to the "write" unit via an auxiliary store or "shuffle circuit", Fig. 3. A diode D1 is biased negatively at its anode, but receives positive-going resetting pulses at times t0, t0<SP>1</SP>, etc.; a diode D3 is similarly biased and receives positive resetting pulses at times t3, t3<SP>1</SP>, &c. Negative pulses from the computer 16, representing digit "one", cause condenser C1 to be charged and the grid of triode V1 to be held negative until a resetting pulse arrives via diode D1, when the resulting drop of the anode potential at V1 causes a lowering of potential at the grid of triode V2 until a resetting pulse arrives via diode D3; a positive output pulse appears at a terminal T3. An output pulse generator for the "read" unit includes a circuit operating on the same principle. The method can also be applied to the division of numbers by powers of two. Specifications 693,424 and 705,474 are referred to.
Patent GB-368038-A (GB)
Title: Improvements in, or relating to, microscopes for use with hardness testing machines
IPC: G02B21/00
Filed: 1931-02-14
Abstract: 368,038. Microscopes. GREEN, H. and WILLIAMS, V. I. N., Norfolk Works, Sheffield. Feb. 14, 1931, No. 4747. [Class 97 (i).] A microscope for use with hardness testing machines c o m - prises means for illuminating the surface under examination through the barrel of the microscope, and a hood &c., permanently or removably attached to the eyepiece, provided with a screen to receive an enlarged image of the surface. The hardness testing machine a with the attached microscope c is rotatably mounted on a pillar b so that the microscope can be brought into position over the worktable d after operation of the machine. Illumination is effected by a lamp s in a tube j, the light being directed downwardly along the barrel by a reflector t. A hood m attached to the eyepiece carries a reflector n by which an image is directed on to a ground glass screen p bearing suitably graduated scales. The image may be photographed by substituting a photographic plate for the screen p. Specification 280,292, [Class 106 (ii), Dynamometers &c.], is referred to.
Patent GB-971091-A (GB)
Title: Improvements relating to induction heaters
Inventor: FENEMORE ALAN STEPHEN
IPC: C21D9/63
Filed: 1960-02-10
Abstract: 971,091. Heating metal strip by electromagnetic induction. ENGLISH ELECTRIC CO. Ltd. Feb. 8, 1961 [Feb. 10, 1960], No. 4769/60. Heading H5H. Gas under pressure is directed perpendicularly on to both surfaces of metal strip 15 passing through an induction heater to maintain the strip clear of the opposed faces of two magnetic structures 10 and 11. As shown, 3-phase distributed windings 13 and 14 are held in transverse slots in the structures 10 and 11 by wedges 18. Compressed air which is preferably pre-heated is fed from headers 16 to a duct 17 in each wedge 18 or in alternate wedges and thence on to the strip through exit holes 19 spaced at intervals along the wedge. The wedges 18 may extend into the air gap, in which case non-magnetic packing pieces are provided between the wedges to obtain a smooth overall surface (Fig. 3, not shown). The tractive effort on the strip may be controlled by varying the phase currents in windings 13 or 14. If no tractive effort is required each magnetic structure may be divided into two halves producing opposing tractive efforts, or single-phase assemblies may be used. Specification 654,881 is referred to.
Patent GB-434871-A (GB)
Title: An improved device for use in connecting and supporting the abutting ends of two contiguous lengths of the permanent rails of railways
IPC: E01B11/62
Filed: 1935-02-14
Abstract: 434,871. Railway rail joints. LIDDINGTON, J. H., 13, Elsee Road, Rugby. Feb. 14, 1935, No. 4771. [Class 104 (ii)] A rail joint comprises a fishplate 23 bolted to the rail ends, a chair 12 having one or more thrust pillars 14 against which the rails bear, and means adjustable in a direction at right angles to the rails on the opposite side for forcing the rails against the pillars 14. The adjustable means may consist of one or more straining bolts 18 carried by or operating in one or more straining pillars 16.
Patent GB-919286-A (GB)
Title: Improvements in or relating to automatic brightness and contrast control circuit arrangements for television receivers
IPC: H04N5/58
Filed: 1960-02-11
Abstract: 919,286. Television. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 11, 1960 [Feb. 14, 1959], No. 4869/60. Class 40 (3).  A circuit arrangement comprising a photosensitive element 10 for the automatic adjustment of the brightness and the contrast in a television receiver of the type in which there is provided automatic gain control and in which the video signal complete with the directcurrent component is applied to the display tube 6 from the video output stage 1, is characterized in that there is connected between the positive and negative terminals of the direct voltage supply a potentiometer network comprising resistors 8, 9, 11, 12 and the photo-sensitive element, a tapping of the potentiometer network being connected to the output terminal of the video output stage, another tapping being connected to the control electrode of the display tube and the photo-sensitive element being connected between said tapping. The circuit operation is illustrated in Fig. 2, where 5 is the video waveform at the anode of stage 1 and 13 is a typical waveform at the cathode of tube 6. The A.G.C. operation maintains the peaks of the synchronizing pulses at the anode of stage 1 at the level 7. Resistors 11 and 12 are chosen so that substantially the same level obtains at the cathode of tube 6. When element 10 is unilluminated and of high impedance, only a small fraction of the video output, as determined by the ratio of resistors 9-11, is applied to the cathode. As the impedance of 10 falls in response to illumination resistor 9 is shunted and the fraction increases. Not only does the overall signal amplitude increase towards the level of waveform 5, but the black level 15 reduces towards the level 14. Thus both contrast and brightness are increased. The network valves are chosen so that the anode load of stage 1 remains substantially constant in value. This prevents variations being imparted to the level of video signal applied over connection 21 to the synchronizing signal separator stage. The circuit may be arranged for use in receiver where a video signal of reverse polarity is applied to the grid of tube 6, Fig. 3 (not shown). The effect of stray capacities 29, 30 imposes a restriction on the choice of resistor valves in the network. This is avoided by rearranging the network in the manner shown in Fig. 5 (not shown). The manner in which this rearranged circuit functions is discussed in detail in relation to components of specified valves. The photo-sensitive element is preferably a cadmium sulphide cell which is disposed on the receiver front panel either below or above the display tube screen.
Patent GB-235812-A (GB)
Title: A new or improved filter for petrol and other liquids
IPC: B01D35/00
Filed: 1925-02-21
Abstract: 235,812. Blackman, A. Feb. 21, 1925. Filters having sheet filtering - materials; filters with loose filtering-materials.-A filter, more particularly for petrol, comprising a casing having an inlet d below and an outlet e above the filtering means n and a sump g and drain cock below the inlet, is provided with a detachable perforated coned disc k between the inlet d and the sump g to prevent impurities being thrown on the filter. The ends b, c of the casing may be detachable, and a sleeve f integral with the end c may carry filtering means consisting of gauzes n, held between L-section rings m. Split wire rings hold rings m and cone k in position. Fibrous and textile materials, felt, or cotton wool may be packed between the gauzes n. In a modification the sump is integral with the casing and the cone. is attached by a stem and wing nut to the filtering means which rests on a step in the casing so that the cone and filtering means may be withdrawn together on removing the screwed upper end.
Patent GB-661371-A (GB)
Title: Improvements in or relating to shuttle box motions and picking motions for looms
IPC: D03D51/00
Filed: 1948-02-20
Abstract: 661,371. Change-box motions; picking motions. WORMALDS & WALKER, Ltd., and AUTY, A. Feb. 19, 1949 [Feb. 20, 1948], No. 5035/48. Class 142(iii). A shuttle-box pattern chain and a picking-motion are both reversed by the movement of one hand lever. A pattern-chain barrel 18, secured to a loose sleeve 19, is rotated forwardly when a clutch member 29, splined on the sleeve 19, is moved in one direction to engage a bevel gear 25 secured to a shaft 20 driven from the loom drive. When the member 29 is moved in the opposite direction to engage a bevel gear 26, mounted freely on the sleeve 19, the barrel 18 is rotated in the reverse direction. The member 29 is actuated by movement of a lever 35 connected to the hand lever. The picking-motion is operated by tappets 50a, 50 which are clutched to their shaft 51 by movement of clutch forks 62, 63. The clutch forks are actuated by a jack lever 48 through rods 52, 64, a resilient connection comprising springs 67 and blocks 65, 66, a bell crank lever 54 pivotedat 55 and a rod 60. The rod 60 is connected to a rod 49 which moves the clutch. forks. The picking-motion is reversed by movement of a crank arm 68 which moves one end of the rod 60 along a slot in one arm of the lever 54. The crank arm is connected to the hand lever, which is moved to reverse the pattern chain, by a lever 72, rods 73, 75, a lever 76 and a shaft 44. The clutch 29 and the hand lever are also connected to the shaft 44.
Patent GB-1425783-A (GB)
Title: Coin checking device
IPC: G07D5/02
Filed: 1974-02-04
Abstract: 1425783 Checking coins LENINGRADSKOE OPYTNO - KONSTRUKTORSKOE BJURO TORGOVOGO MASHINOSTROENIA 4 Feb 1974 [23 Feb 1973] 05056/74 Heading G4V A device, as in Fig. 1, for checking coins by their diameter comprises a coin conduit being wedge-shaped and narrowing along the path of movement of coins being checked and having coinciding butt partitions 2 and 3 and side partitions 1 which are spaced apart by a distance equal to the thickness of the coin being checked, the butt partitions being at least partly made of conductive material, and one of them, 3, being divided into zones of alternately insulating a and c and conductive b material, a zone of conductive material forming with an opposing conducting butt partition zone, a check zone to which is connected a coin acceptance circuit 4 which is closable when the diameter of a coin being checked and the distance between the butt partitions in the said check zone is equal. In Fig. 1, all the butt partition 2 is of conductive material. Several of such devices could be joined in series to cater for coins of various denominations. Fig. 3 shows a further embodiment adapted for a heptagonal coin and a round coin. The angles of coincidence can be designed for appropriate coinage and to avoid bounce back.
Patent GB-449525-A (GB)
Title: Improvements in or relating to hollow articles formed by winding flexible strip material
IPC: B65D3/02
Filed: 1934-09-25
Abstract: 449,525. Paper tubes. DIOT, E. L., 6, Avenue Philippe le Boucher, Neuilly-sur-Seine, France. Sept. 25, 1934, No. 5094/36. Divided out of 449,308. Void [Abridged as open to inspection under Sect. 91 of the Acts, Oct. 31, 1935]. [Class 99 (ii)] [See also Group XVII] Milk bottles and other hollow articles which are at least in part of tapered form are made by winding helicoidally on a mandrel a transversely crÛped flexible paper strip, which maybe of a translucent nature, the strip being coated over part of the under surface with adhesive. To facilitate removal the mandrel may be formed in two portions hingedly connected together for instance at one end, the parts being closed together when the mandrel is to be removed. During winding over the tapered or contoured portions of the mandrel the strip assumes a curved form by reason of the different tensions to which the edges are subjected and accommodates itself to the curvature to which it is being applied. The bottle shown in Fig. 5 is formed by starting the winding over a cardboard neck reinforcement 14 and continuing towards a base reinforcement 9 ; a flanged bottom 10 is held in position by crimping thereover the end of the part 9. Fig. 6 shows a neck reinforcement sleeve formed with a closed end 15 adapted to be perforated for delivery of the contents. The bottles &c. may be coated both internally and externally with a layer 19 of wax &c.