baber/WOPTO huggingface dataset:
Patent GB-923143-A (GB)
Title: Hot electron, cold lattice, semi-conductor cathode
IPC: H01J1/308
Filed: 1959-03-24
Abstract: 923,143. Cathodes. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. March 24, 1959 [March 24, 1958], No. 10239/59. Class 39 (1). [Also in Group XXXVI] A cathode comprises a body of n-conductive, doped, semi-conductor material having an exposed emissive surface and terminal connections for applying an electric field thereto, this field causing electron emission, and the arrangement being such that the lattice of the body remains cold. As shown a wafer 1 of n-type semi-conductor material is disposed between a relatively massive electrode 4, which may be provided with cooling fins, and a nickel grid electrode 2, electron emission occurring between the meshes of the grid. The grid may be replaced by a thin, semi-transparent electrode having a low external work function. In an alternative structure two interdigitated electrodes are disposed in contact with one face of a semi-conductor wafer, electron emission occurring from the exposed portions of this face. Among suitable semi-conductor materials are Si, SbIn, InAs, InP, GaAs, SiC, Mg 2 Ge, Mg 2  Sn, Mg 2  Si, Cs 3  Sb, Na 3  Sb, BaO, Ba 2  Si, ZnSe and ZnTe provided with suitable impurities to give N-type conductivity, e.g. silicon may be doped with lithium. The external work function of semi-conductors such as silicon or indium antimonide may be reduced to a sufficiently low value by a suitable surface treatment, e.g. the adsorption of caesium. Reference has been directed by the Comptroller to Specification 853,352.
Patent GB-527309-A (GB)
Title: An improved method of producing polished or faced stone
IPC: B28B19/00
Filed: 1939-04-03
Abstract: 527,309. Polished stone. THOMAS, F. B. April 3, 1939, No. 10334. [Class 22] Polished or faced stone is made by laying moistened finely ground stone, which may be mixed with colouring material, on a glass or other smooth surface, agitating it over the surface to produce a polished facing, backing the facing with concrete or other suitable material, and heating at about 70‹C. in a current of air until set.
Patent GB-869615-A (GB)
Title: Animal feedstuffs
IPC: A23K1/165
Filed: 1958-04-01
Abstract: A feedstuff for monogastric animals, such as poultry, containing non-fermented barley has an amylolitic extrinsic enzyme dispersed therein, e.g. by the addition to the feedstuff of a non-fermented cereal-grain supplement containing up to 25% by weight of the enzyme. The enzyme or enzymes, which may be present in the form of a crude mixture obtained from a fermentation broth such as is produced by the fermentation of Aspergillus oryzae, are preferably present in an amount sufficient to modify 20 to 35% of the starch content of the barley.
Patent GB-562169-A (GB)
Title: Improvements in or relating to driving means for the wheels of vehicles, particularly motor cycles
IPC: B62K25/20
Filed: 1942-07-27
Abstract: 562,169. Motor-cycle driving-gear and spring suspension. BALLAMY, L. M., SHEEPSHANKS, R. H., and G. B. (NOTTING- HAM), Ltd. July 27, 1942, No. 10501. [Classes 79 (ii) and 136 (iii)] In a rear wheel mounting for motor cycles of the kind in which the wheel axle 11 is carried by an arm or arms 13, 14 pivoted to the frame at 18 and controlled by springs 33, the wheel being driven by meshing gear-wheels 26, 27, the first of which rotates on the shaft 18, the gear-wheel 26 is driven through skew or worm gearing 23, 24 by a longitudinal shaft 22 enclosed in a tubular casing 20 extending alongside the wheel, and the cycle frame carries a casing 19b enclosing the skew or worm gearing. In the construction shown in Figs. 3 and 4, the casing 19b is formed with sockets 46, 47 for frame tubes 30, 48, and the tube 20 is screwed thereto at 49. The gears 26, 27 are enclosed in a casing 19a rotatable about the shaft 18 and casing 19b on bearings 53, 58, to permit the wheel axle 11 to rise and fall. The axle movement is controlled by main springs 35 and rebound springs 67 housed in casings 63, 64 pivoted to lugs 62 on the frame tubes 30. The longitudinal shaft 22 is driven from the motor cycle gear-box (not shown) through a transverse shaft 40 and bevel gearing 39, 38. The forward end of the tube or casing 20 fits telescopically into a socket 50 in the gear-box. The worm-wheel 24 and gear 26 may be replaced by a single skew gear engaging both the driving skew gear 23 and the final driven wheel 27. In a modification, Figs. 1 and 2 (not shown), the skew gearing 23, 24 and the spur gears 26, 27 are all enclosed in a single casing which forms part of the cycle frame and is formed with an arcuate slot in which the wheel axle 11 can rise and fall. The driving mechanism may be duplicated, one on each side of the wheel, and any desired form of springing may be used, e.g. torsion bars,'rubber blocks or compressed air. According to the Provisional Specification, crown or bevel gearing may be used instead of skew gearing.
Patent GB-1477608-A (GB)
Title: Gasification of solid fuels
IPC: C01B32/40
Filed: 1975-03-14
Abstract: 1477608 Gasifying solid fuels C OTTO & COMP GmbH 14 March 1975 [18 April 1974] 10692/75 Heading C5E A process of gasifying solid, pulverulent, or fine-grain fuel comprises introducing the fuel into a gasifier under pressure by means of a gas, the gas being a sub-flow derived from combustible gas generated in the gasifier. Preferably the combustible gas is subjected to dust extraction and cooling before the sub-flow is drawn off and compressed for use in fuel injection. Alternatively the combustible gas may be used in a reduction ore extraction before part of the reduction process gas is separated, subjected to dust extraction, de-acidified, dried and compressed for use in the fuel injection. Suitable flow paths are exemplified.
Patent GB-792074-A (GB)
Title: An explosives processing building
IPC: E04B1/98
Filed: 1956-04-09
Abstract: 792,074. Building for processing explosives. TRIGGS, W. W. (Du Pont De Nemours & Co. E. I.). April 9, 1956, No. 10720/56. Class 20(1) An explosive processing building 10 comprises side walls 11 end walls 12 and a roof 13 to sustain earth heaped around and on top and is provided with at least one vent shaft 16. all located to prevent blast and missiles reaching other buildings. The vent shaft 16 is separated from the building 10 by a thin wall 17 of plasterboard on wood studding. A tunnel 24 is provided for entry of personnel. The roof 13 has a top cupola 21 for the shafts of mixing machines. An open passage 15 from the building 10 leads to a tunnel 30 being separated from 10 by a partition wall 18 and from 16 by another partition wall 19 'both of light construction like 17. The materials enter by a conveyer tunnel 27 and the finished products are taken out by another conveyer tunnel 30. All tunnels are of poured concrete. The conveyers are isolated from the processing buildings by spark-blocking partitions. A further tunnel 34 to the shaft 16 is provided for inspection or cleaning. All outside tunnel openings are directed against the earthworks of adjacent buildings. In Fig. 5 the back wall 42 is erected at the side of a hill, crushed stone 54 being filled in between wall and hill. Two side walls 40 and a roof 41 is also poured integral with the back wall 42 and the front is closed by a light curtain wall 46, e.g. of plywood. Earth 49 is heaped on top and down the sides. An apron 53 and a door (55 Fig. 6 not shown for entrance is provided. The side walls 40 have integral side wings (48 Fig. 4, not shown). A concrete bulkhead (47 Fig. 4, not shown) is in front of or underneath the curtain wall 46.
Patent GB-196800-A (GB)
Title: Improved anti-dazzle device for personal wear
IPC: G02C7/16
Filed: 1922-04-18
Abstract: 196,800. Wineberg, F. M. April 18, 1922. Accessories.-An anti-dazzle device for cyclists comprises a plate 1 with massed perforations to break up the glare of approaching headlights. The plate may have clips 2 for attachment to the peak of a cap, may form the peak, or may be pivoted to a band passing round the head.
Patent GB-128416-A (GB)
Title: Improvements in Kinematograph Shutters.
Inventor: ELLIS JOHN
IPC: G03B9/10
Filed: 1918-06-29
Abstract: 128,416. Ellis, J., and Austin, H. C. June 29, 1918. Kinematagraph apparatus .-Projector shutters are formed at the part covering the gate during the time of movement of the film of a material which disperses the light without very materially cutting any off; flicker blades may be dispensed with. As shown, the shutter frame comprises an opaque centre C connected by four ribs B to a rim D, and has a blade of fine cambricor other textile material A glued to it. The blade may alternatively be built up in a frame which is attached to the shutter frame, and may comprise wire gauze instead of the cambric, &c. Reference has been directed by the Comptroller to Specifications 17848/96, 22627/96, and. 681/98.
Patent GB-1344439-A (GB)
Title: Compartment door latch mechanism
IPC: E05C3/24
Filed: 1972-03-08
Abstract: 1344439 Door latch mechanisms FORD MOTOR CO Ltd 8 March 1972 [13 April 1971] 10771/72 Heading E2A A latch mechanism for a door comprises a housing 19 having a cylindrical bore 21 in which are mounted rotatably a rotary pawl 43 and a cylinder lock mechanism 45 which are operatively coupled through a lost motion connection. A latch bolt 25 is pivotally mounted on the exterior of the housing and is provided with a cam portion 34 which under spring biassing of the bolt 25 is urged into a slot 35 in the housing. In the latching position of the bolt 25 the cam portion engages a surface of the pawl 43 which thus blocks movement of the bolt into its unlatching position under its spring biassing. The pawl 43 however, is provided with a slot which is movable by rotation of the pawl into alignment with the slot 35 in the housing and hence the cam portion 34 of the bolt to allow the bolt to pivot into its unlatching position. The cylinder lock mechanism is rotated by its key from its locked position to a position at which it entrains the pawl and thereafter rotation of the cylinder lock mechanism rotates the pawl. The pawl 43 is spring loaded so that it is biassed towards its bolt blocking position and the cylinder lock mechanism is spring biassed only as far as its position at which it entrains the pawl. In the construction disclosed the cylinder lock mechanism 45 is prevented from being turned from the position at which it entrains the pawl to its locked position unless the key is inserted in the mechanism by a step in the wall of the bore of the housing (Fig. 5, not shown). The lost motion connection comprises projections 59 (61, Fig. 4, not shown) on the cylinder lock mechanism working in a recess 58 in the adjacent face of the pawl and on a projection (65) on the adjacent face of the pawl respectively.
Patent GB-1284964-A (GB)
Title: Automatically resetting voltage transient rpotection device
IPC: H02H9/04
Filed: 1970-03-06
Abstract: 1284964 Overvoltage protection M & T CHEMICALS Inc 6 March 1970 [7 March 1969] 10812/70 Heading H2H [Also in Division H3] A device for protecting circuitry against voltage transients comprises a semiconductor gate controlled rectifier SCR1, diodes D1-DN for providing a bias potential for the rectifier and a series circuit including a resistance R2 and a Zener diode ZNR1 connected to the gate electrode of the rectifier. When a high voltage transient appears across terminals 28, 30, the Zener diode conducts and the potential across the resistor R2 triggers the rectifier SCR1 so that the voltage between the terminals 28, 30 is clamped at the sum of the voltage drops across the diodes D1-DN and the rectifier SCR1. As the transient voltage reduces, the rectifier SCR1 returns to its non conducting state. In modifications, capacitors are connected across the diodes D1-DN and/or the rectifier SCR1 for reducing the effects of the relatively slow switching times of the diodes, for preventing the switching on of the rectifier in the absence of triggering voltages and for preventing high rise time transients, which do not exceed a threshold voltage, from triggering the rectifier. The device may also be used with alternating voltages by connecting it in a full wave diode bridge rectifying circuit or by using discs and a triac in place of the diodes and the rectifier SCR1.
Patent GB-1419921-A (GB)
Title: Method for treating with liquid ammonia fabrics made of yarns
IPC: D06B7/08
Filed: 1974-03-12
Abstract: 1419921 Open-end spinning; mercerising fabrics, CLUETT PEABODY & CO INC 12 March 1974 [31 Aug 1973] 10946/74 Addition to 1365706 Headings DID and D1P Yarns obtained by open-end spinning of cellulose fibres are formed into a fabric (e.g. a woven or knitted fabric) and the fabric is mercerised by impregnation of the continuously moving fabric with liquid ammonia followed by its rapid removal to give a reaction time of 0.6 to 9 seconds. Open-end spinning. Fibres deposited upon a delivery cylinder 11 of a carding engine are removed by suction device 12 and conveyed through duct 13 into nozzle shaped spinner 14. A ball 17 may be present in upper rotating chamber 18. The centrifugal force acting upon the ball presses the fibres against the chamber wall so that they rotate with the chamber. The lower chamber 19 of the spinner rotates either in the same direction as 18 but at a lower speed or rotates in the opposite direction. Thus having started by drawing a thread up through 19 to the upper edge of chamber 18 the fibres are spun into a thread which is twisted at a rate equal to the difference in rotational speeds between 18 and 19. A passage 21 for the thread has a lateral outlet opening 22 running obliquely to the axis of rotation. This ensures that the thread rotates with chamber 19. An electromagnetically operated rotary valve 23 is provided to cut off the fibre supply. Impregnating fabrics; mercerising. A fabric web 28 formed from open-end spun cellulosic yarn is fed through inlet seal 37, bath 41 of liquid ammonia and the nip of padder rollers 33, over tension controller 34, around delay means 35 then pressed against heated drying drum 77 by endless blanket 76 and finally exits via seal 63. The seals 37, 63 comprise resilient members 64, stationary members 65 and evacuation ducts 66, 67. A float 42 controls valve 46 to maintain the liquid ammonia level. The time between impregnation of the web with liquid ammonia and the commencement of its removal by the dryer, 0.6 to 9 seconds, is controlled by the speed of the web and by its travelling distance between bath 41 and drum 77. The distance is varied by the movement of rollers 73, 74. Small automatic movements of rollers 73, 74 also maintain a constant tension in the web 28, its pressure on roller 69 being used to control a motor (M, Fig. 3, not shown) which rotates screw threaded shafts (83) to move supports (82) for rollers 73, 74, The ammonia vapour/air mixture in the chamber 29 comprises over 90% by volume of ammonia. A spray may replace the ammonia bath. The brief ammonia treatment causes the fibres to swell radially and avoids significant subsequent shrinkage. The strength, extensibility and affinity to dyes, flame retardants and resins is improved as is resistance to abrasion, shrinking and wrinkling.
Patent GB-499195-A (GB)
Title: Improvements in and relating to the production of crystalline dextrose
IPC: C13K1/10
Filed: 1937-04-16
Abstract: Crystalline dextrose containing residual mother liquor is purified by admixing with it, under conditions such that there will be no appreciable induction of new crystals, a solution of dextrose of greater purity than that of the residual mother liquor, and of a density so high that it does not dissolve any of the crystalline dextrose and, after thorough mixing, centrifuging to remove the solution.  The crystals may then be washed in the centrifuge with fresh water.  Preferably, the temperature is reduced during mixing to cause some growth of the crystals. Specifications 227,140 and 232,160, [both in Class 32], are referred to.ALSO:Crystalline dextrose containing residual mother liquor is purified by admixing with it under conditions such that there will be no appreciable induction of new crystals, a solution of dextrose of greater purity than that of the residual mother liquor, and of a density so high that it does not dissolve any of the crystalline dextrose and after thorough mixing, centrifuging to remove the solution.  The crystals may then be washed in the centrifuge with fresh water.  Preferably the temperature is reduced during mixing to cause some growth of the crystals. Specifications 227,140 and 232,160, [both in Class 127], are referred to.
Patent GB-1032960-A (GB)
Title: High power electric switchgear arrangement
IPC: H02G5/06
Filed: 1964-03-16
Abstract: 1,032,960. Switchboards. D. O. HAGGLUND. March 16, 1964 [Aug. 1, 1963], No. 10964/64. Heading H2B. A switchboard comprises at least one main bus-bar 18 enclosed in a horizontal trunking 16 and a plurality of branch bus-bars 24, 24<SP>1</SP> extending at right angles to the main bus-bar 18 and close to insulating walls 30, 30<SP>1</SP> of high dielectric strength and forming with other insulating and conducting walls chambers 10, 14 extending perpendicularly to the trunking 16 and containing a vertical stack of distributing units 52 each comprising fuses 40 and switches 42 and containing no magnetic members. Further chambers 12 contain the switch actuating mechanism 50 and horizontal busbars 44 connecting with cables 46. The insulating walls may be of a plastics cured composition of wood fibres and gypsum such as is known under the Trade Mark " Gibogi."
Patent GB-467695-A (GB)
Title: Improvements in and relating to boiler furnaces
IPC: F23K3/14
Filed: 1936-04-17
Abstract: 467,695. Boiler furnaces. McKEAN, J. G., and JONES, R. F. April 17, 1936, No. 11014. [Class 51 (i)] In a sectional boiler of the kind in which the firebars of the furnace are formed integral with the hollow boiler sections, the firepot of a screw-feed mechanical stoker is supported on the fire bars adjacent the furnace front. As shown in Figs. 1 and 2, a rectangular frame 1, 1<1>, 1<2>, 2 is supported by the fire bars 3 and the firepot 9 is arranged within the frame and spaced therefrom, fuel being fed to the firepot through the conduit 11. Inverted U-shape firebar sections 13 are supported upon the frame 1, 2 and the walls of the firepot, the firebars at the sides of the firepot having passages 14 for air while those at the corners are imperforate. The firebars 3 at the sides and back of the firepot are covered by firebrick 6, 7. Air for combustion is supplied to the front part of the space beneath the fire bars 3 closed at the back by a wall 8.
Patent GB-1442297-A (GB)
Title: Mechanical devices having relatively movable members
IPC: G01H1/00
Filed: 1973-03-07
Abstract: 1442297 Spring units; resilient mountings; linkwork RANK ORGANISATION Ltd 28 Aug 1973 [25 Aug 1972 7 March 1973] 39775/72 and 11021/73 Headings F2S and F2K [Also in Division G1] One member 13, Fig. 1, is mounted from another by a linkage comprising an elongate rigid lever 11 pivotally attached at its end 12 to the member 13, and an elongate resilient element 15, which is curved when unstressed (as shown in Fig. 1), rigidly attached to the end 14 of the lever and to the other member, the linkage being so positioned with respect to the members that the elongate resilient element is substantially straight (dotted line 16) when the members are at rest. If the radius of curvature of the unstressed resilient element 15 equals half the length I of the lever, and if the lever 11 is perpendicular to the resilient element 15 in the rest position, then the linkage affords a constant force opposing movement of the members. The resilient element 15 may be a triangular leaf spring, with the lever 11 attached at the wider end. Two linkages may be used to mount the mass 18, Fig. 4, of a vertical seismograph or gravity meter from a framework 13. Each linkage comprises a cranked lever, e.g. 11a pivotally mounted on the framework and two triangular leaf springs, e.g. 15a side by side (depicted in Fig. 3, not shown), connected to the mass.
Patent GB-910574-A (GB)
Title: Well completion equipment
IPC: E21B33/047
Filed: 1961-03-27
Abstract: 910,574. Well equipment. GRAY TOOL CO. March 27, 1961 [April 1, 1960], No. 11114/61. Class 85. A hanger assembly for suspending in side by side relationships a number of tubing strings 13 from the bore 10 of a well head comprises an annular support 38 that both rests on a seat 16 formed in said bore and can be correctly orientated thereon by the heads 192 of positioning screws 188 in the well head cooperating with recesses 84 in the side of the support 38. Formed in the support are bores opening therethrough, each bore allowing of the passage of a tubing string screwed on to the lower end 46 of a hanger unit. Each hanger unit consists of a tubular body 42 having centrally of the length thereof an outwardlyprojecting flange 44 that seats against and is freely rotatable on a shoulder 62 in a flanged guide member 56, 64 that seats in a bore 80 in the support 38 and is bolted to said support. A cover-plate 66 bolted to the flange 56 of the guide member 56, 64 retains the hanger unit in the guide member against the shoulder thereof. In a modified form the cover-plate may be in two quadrant parts.
Patent GB-504173-A (GB)
Title: Improvements in or relating to methods of and apparatus for moistening products
IPC: B02B1/08
Filed: 1937-07-19
Abstract: 504,173. Moistening porous products; conditioning tobacco. GUARDITE CORPORATION. July 19, 1937, No. 11134. Convention date, Feb. 19. [Class 58] [Also in Group VI] Porous products such as grains, tobacco, and other organic products are moistened by applying to the outside water, subjecting a chamber containing the moistened product to a vacuum sufficient to evaporate water within the grain to free the interstices thereof from all air and other non-condensable gas, leaving a substantial portion of the water remaining with the product to be available as eventual final moisture, and then introducing steam to transfer this remaining water to the interior of the product to supplement the steam condensed therein and to establish the desired total final moisture. Grain after washing and wetting is fed from a hopper 10 through a control valve 11 to a conveyer 12 that discharges it through inlets 14, 14a, 14b into treating tanks 13, 13a, 13b. After the tank 13 has been tilled the inlet 14 is closed and the tank put into communication through the opening 15 with a vacuum pump 38, the vacuum later being assisted by steam jets 60 drawing air through the apertures 15 and 16. The vacuum is maintained until the temperature of the grain falls a few degrees when the vacuum valves 15a, 16a, are closed and steam is admitted through a valve 17: evacuation is maintained during the steaming through a holding line 63 provided with a valve 61. The tank is provided with a conical perforated false bottom 18 and a similar top 19 ; a steam inlet 20 may be used alternatively to or in combination with the inlet 17. With three tanks used in conjunction as shown the valves are automatically actuated from a panel board 31 on which predetermined settings of the controls are made. In treating wheat evacuation by the pump proceeds until a pressure of two inches absolute of mercury is reached when the valve 15a is closed and the steam jets 60 started and continued till the temperature falls, the vacuum valves then being closed and steam admitted through the pipe 70, strainer 71, reducing valve 73 and desuperheaters 74, steam separator 75 and pipe 76 from which it enters the tank preferably at a temperature of about 30-50‹ F. above the maximum temperature to which the wheat is to be raised, such maximum temperature desirably not exceeding 120‹ F. The wheat is maintained at this temperature for a period of thirty minutes : a time cycle controller then opens the valve 33 to discharge the tank. Specification 488,638 is referred to.