baber/WOPTO huggingface dataset:
Patent GB-926646-A (GB)
Title: Improvements in photographic half-tone reproduction
IPC: G03C5/305
Filed: 1959-07-02
Abstract: 926,646. Photographic half-tone copying. KODAK Ltd. July 2, 1959 [July 2, 1958], No. 22690/59. Class 98 (2). For high or extreme contrast reproduction a half-tone or line image is exposed to a silverhalide emulsion layer having at least 85 mole per cent silver chloride and this is developed in a solution containing a hydroquinone developing agent, 0.01 to 0.05 molar of sulphite ion, a restrainer and sufficient alkali to give a pH of at least 9.0. The emulsions may be of 85 to 100 mole per cent chloride: those containing 5 to 15 mole. per cent bromide are especially useful, 1 to 2 mole per cent iodide also may be present. The developing agent may be hydroquinone itself, the sulphite ion may be formed from sodium sulphite or sodium formaldehyde bisulphite, a bromide is used as restrainer and carbonate as alkali. Other addenda may be present in the emulsions and developer as well. Four examples quote emulsion and developer mixings and specify contrast gradient and dot quality data, including comparisons over a range of materials within and not within the terms of the invention, after fixing in hypo. Specifications 235,211, 606,141, 654,690, 680,593, 682,355, 777,181 and 841,136 are referred to.
Patent GB-1367408-A (GB)
Title: Continuous heat treatment process for rod-shaped low carbon structura l steels
IPC: C21D1/18
Filed: 1972-05-15
Abstract: 1367408 Continuously heat treating steel rod BAU-STAHLGEWEBE GmbH 15 May 1972 [13 May 1971] 22704/72 Headings C7A andC7N Steel containing up to 0À26%C and up to 1À8% Mn, with or without up to 3% of alloying elements, is surface-heated to a temperature between Ac 1  and 1300C so that transmitted heat causes the temperature of the centre of the bar to rise at not less than 100C/sec. to within the range Ac 1  to 900C, after which the rod is quenched before homogenization of the carbon content can occur. Preferably the quenching is carried out when the surface and the centre at at the same temperature, particularly 750-850C, and may be not more than 5 seconds after the surface layer reaches Ac 1 , and not more than 1À5 seconds after the central region passes that limit. Heating may be by induction, and quenching with waterata pressure of 2 to 12 atmospheres and a flow-rate of 6 to 30 litres/kg. of steel. Prior to heat treatment the rod may be preheated to not more than Ac 1 , while subsequently it may be treated at 100 to 380C for 20 to 30 minutes. The quenching rate may be such as to effect a cooling rate of at least 800C/sec. until the surface is below 150C, and the process is applicable particularly to rods of 4 to 36 mm. diameter, and which have been cold worked 20% to 70%, especially for the production of concrete reinforcement such as welded mats. Suitable apparatus comprises a medium frequency induction heater 2 for preheating, a high frequency unit 3 for surface heating, and adjustably spaced from the latter a water spray 4.
Patent GB-1122476-A (GB)
Title: Improvements in and relating to frequency deviation expansion of frequency modulated electric signals
Inventor: HABERLAND WOLFRAM
IPC: H03C3/06
Filed: 1967-05-16
Abstract: 1,122,476. Frequency modulation. FUNKWERK DRESDEN VEB. 16 May, 1967, No. 22715/67. Heading H3R. In an arrangement for frequency deviation expansion, the frequency modulated signal f o +#f o  is fed to a sampling circuit 2.1 which produces sampling pulses to gate an auxiliary signal f e  in a gate 2.2. It is stated that the output signal has a lower carrier frequency f e - mf 0  and an increased deviation m#f 0 . The required output is selected by a low-pass filter 4.
Patent GB-1280059-A (GB)
Title: Improvements in and relating to brackets
IPC: A47B96/06
Filed: 1970-05-11
Abstract: 1280059 Shelf brackets H J DOWSETT and H E PEPPERELL [trading as STRONGBEAM CO] 11 Dec 1970 [11 May 1970] 22721/70 Heading A4B An L-shaped shelf bracket 1 with limbs 3, 4 of channel section is detachably secured to a wall mounted support member 2 provided with a lug 12 defining a slot 13 to receive a pin 7 carried by a sub-assembly secured within the channel section limbs 3, 4 and an inclined top portion 11 over which a plate 5 in the sub-assembly is engaged. The sub-assembly also carries a pin 6 which is engaged in a slot in a shelf supporting member 17 resting on the horizontal limb 3 of the bracket 1. The member 17 may be constructed similarly to the support member 2.
Patent GB-1182417-A (GB)
Title: Aircraft with V/STOL Capability
Inventor: DENNING RALPH MURCH
IPC: B64C29/00
Filed: 1966-05-21
Abstract: 1,182,417. Jet propulsion engines. ROLLS-ROYCE Ltd. May 17, 1967 [May 21, 1966], No. 22761/66. Heading F1J. A V/S.T.O.L. aircraft comprises an engine having compressor means, combustion means and turbine means, port and starboard swivellable nozzles disposed adjacent the compressor means, a short duct connecting each nozzle to the compressor means, an arrangement for dividing the delivery of the compressor means so that one part of it is delivered to the combustion means and a second part is delivered to the swivellable nozzles through the ducts, and additional nozzle means for selectively receiving a third part of the delivery and arranged for directing the third part to deflect away from the air intake means of the engine an upward fountain formed by the efflux from the nozzles when the nozzles direct the efflux downwardly and the aircraft is operating close to the ground. The aircraft shown has a two-spool engine comprising a pair of nozzles 19 fed from a forked exhaust duct 18 and a pair of nozzles 22 fed from a plenum chamber 20 between the L.P. compressor 14 and the H.P. compressor 15. The nozzles 19, 22 are swivellable together about transverse axes between a downward position for V.T.O.L. and a rearward position for forward flight. Auxiliary combustion systems 23 can be brought into use to increase the thrust of the nozzles 22. When the aircraft is on or near the ground, the hot air or combustion gases discharged downwardly by the two nozzles 22 spread across the ground, meet and rise upwardly in an upcurrent of which a substantial part tends to travel forwards along the underside of the fuselage to be ingested at the engine intake openings 13, resulting in reduced engine thrust. Ground debris also tends to be ingested. To counter this, an additional fixed nozzle 25 communicating with the plenum chamber 20 can be brought into operation to direct a downward jet in opposition to the upcurrent from the nozzles 22 whereby the upcurrent and ground debris are at least partly prevented from entering the intake openings 13. In addition, overheating of the extended nosewheel 30 by hot gases from the nozzles 22 is prevented. The nozzle 25 is controlled by a butterfly valve 27 operated either independently or in response to the control or operation of the combustion systems 23. The nozzle 25 may be a transverse slot or may be replaced by a number of nozzles. One or more baffles may be provided to direct its discharge away from the intake openings 13. Reference has been directed by the Comptroller to Specification 968,069.
Patent GB-228042-A (GB)
Abstract: 228,042. Anker-Werke Akt.-Ges., and Naumann, W. April 16, 1924. Index type-wheel machines; locking-devices.- In a differentially-set, independently-operated cash register wherein the item type-wheels are mounted in a cylinder rotated for impression, a control lever is provided such that while it is in its normal position the item may be set up and the main shaft is locked and by moving it to another position the item-setting parts are disengaged and the main shaft is released. The item-printing types are mounted on wheels 22a rotatably carried by the printing cylinder 19 and are set by racks 7 supported by a pair of arms 8, 9 pivoted at 5 and carrying a rod 10 traversing slots 7<1> in the racks. The item-setting levers 26 are connected with the racks by links 27, arms 28 and toothed sectors 15 and while the control lever 25 is in the normal position shown the item-setting parts are free to move. On completion of the setting, the control lever is moved and this through a cam arm 29 connected to the lever rocks a lever 34 clockwise and by means of a link 35 swings a bail 38 to the right to force pawls 39 into locking engagement with teeth on the item-setting levers 26. Simultaneously bhrough a second arm 30 and pin 31<a> a lever 31 is rocked counterclockwise so as (1) to disengage a pin 31b from a notch in a disc 32 fast on the main operating shaft 33 and (2) to swing arms 8, 9 and the setting-racks 7 clockwise to free the type wheels. Upon operation of the shaft 33, the cylinder 19 is rotated to effect impression at 23<x> and meanwhile the control lever is locked owing to the pin 31b riding on the periphery of the disc 32.
Patent GB-1225046-A (GB)
Title: Tile
Inventor: KAMP CHARLOTTE ANDRESEN
IPC: E01C5/00
Filed: 1968-05-14
Abstract: 1,225,046. Tiling. C. A. KAMP. 14 May, 1968 [16 May, 1967], No. 22818/68. Heading E1B. A facing, flooring or paving element 1 has four curved edges 2-5 each forming part of a circle of radius r, the centres of curvature 2c, 3c of edges 2 and 3 defining a hypothetical axis 8 and the centres 4c, 5c of edges 4, 5 being equidistantly spaced from axis 8 along lines perpendicular to the axis 8 through the centres of curvature 2c, 3c respectively. In the preferred embodiment the ratio a:b:r is 5:8:6. A tiling arrangement includes special edge tiles.
Patent GB-932787-A (GB)
Title: Improvements in or relating to refractory bricks
IPC: F23M5/06
Filed: 1959-07-02
Abstract: 932,787. Furnace bricks. OUGHTIBRIDGE SILICA FIREBRICK CO. Ltd., C. BOOTH, C. S. HEDLEY, T. R. LYNAM, E. SINGLETON, and W. C. GILPIN. July 1, 1960 [July 2, 1959], No. 22822/59. Class 51 (2). [Also in Group V] A metal reinforced refractory brick is formed by moulding two lightly pressed shapes, Fig. la, by hand ramming in a suitable mould, inserting the shapes in a unitary metal case 11, Fig. lb, together with a reinforcing sheet 15 of flattened expanded mild steel, and then compressing the case to the dimensions of 9Î4¢Î 3 inches, shown in Fig. 1c in a suitable die. The brick may be provided with a tab or hanger, Figs. 12 and 13 (not shown). In the embodiment of Figs. 8a and 8b a cylindrical unitary metal case 48 is filled with refractory material and pressed to provide a rectangular brick casing 49. U-shaped metal reinforcements may be provided in the outer casing and bricks suitable for use in furnace roofs comprising two different compositions, Fig. 7c, may be moulded, the sections 44 and 45 being of magnesite and the sections 46 and 47 of chrome magnesite. When neutral or acid bricks are being produced the metal casing and reinforcement are not generally of iron or steel but of metals more compatible with acid and neutral refractory materials.
Patent GB-1480450-A (GB)
Title: Adjustable bookrest
IPC: A47B23/04
Filed: 1975-05-23
Abstract: 1480450 Adjustable bookrests W H SMITH & SON Ltd VERSATILE FITTINGS Ltd and R D LUGTON 23 May 1975 22828/75 Heading A4H A bookrest comprises a planar base 11, a wire book-resting member 12 pivoted to base 11 at 21 and a wire support member 13 pivoted to base 11 at 22, the members 12 and 13 being engageable with one another to form a pivotal sliding connection at 30 to hold member 12 at different inclinations. Base 11 is slideably mounted on a sub-frame 14 including book-retaining abutments 27 to adjust the distance between member 12 and abutments 27 to accomodate books of different thicknesses. The bookrest comprises resilient steel wire.
Patent GB-648499-A (GB)
Title: Centrifugal amalgamator reclaiming machine
IPC: C22B11/10
Filed: 1948-08-30
Abstract: 648,499. Centrifugal machines. PATRICK, B. F. Aug. 30, 1948, No. 22835. [Class 23] A centrifugal amalgamator for separating precious metals from pulp comprises a feed conduit discharging pulp into the bottom of a rotary bowl 21 supported by a hollow shaft 17, an outwardly and downwardly e x - tending rim 30 at the top of the bowl and over which purified pulp is discharged to a launder 45, and means to circulate the mercury by extracting it from the top of the bowl and returning it to the bottom thereof. 'The lower cylindrical part of the bowl has an internal helical rib 26 and is located below a bowed part 28 surmounted by the rim which has an internal diameter smaller than that of the cylindrical part. The upward flow of the pulp and mercury is assisted by a fan 59 on the shaft. Mercury trapped in the bowed part is discharged to a gutter 47 connected to a pipe 48 conducting the mercury to the interior of the hollow shaft from whence it is discharged by downwardly directed passages into the bottom of the bowl. Flow through the pipe 48 can be measured at an inspection box 55 and regulated by a valve 58. The port 40 of the feed conduit together with a cover 43 may be lifted clear of the bowl and pivoted about a pipe joint 36 to facilitate inspection of the bowl interior. The hollow shaft of the bowl is supported in the machine frame by anti-friction and thrust bearings 20, 19 and is driven by bevel wheels.
Patent GB-944175-A (GB)
Title: Means for lifting and transporting sheet material and other articles
Inventor: HORROCKS BRIAN JOHN
IPC: B66C1/02
Filed: 1960-06-30
Abstract: 944,175. Feeding sheets. RUBERY, OWEN & CO. Ltd. June 29, 1961 [June 30, 1960], No. 22871/60. Heading B6B. [Also in Division B8] An appliance for lifting and/or holding flexible sheets and other articles by suction derived from the low pressure region in the wake of a flow of compressed air comprises a body 12 in which the air is fed (e.g. by way of inlet tube 11 and ports 22) into an annular chamber 20 bounded by curved walls 13, 19 which converge to a narrow slit 21 from which the air emerges. The members 16, 17 whose curved surfaces 13, 19 define the chamber are interconnected by screws (not shown) by which the width of slit 21 may be adjusted. A flat article or sheet is held in contact with the flat annular surface 24 of member 16, and, when handling flexible sheet material such as paper, the intervening circular space 25 may be covered by a wire mesh grill. The appliance may be used not only to lift but also to hold to itself a moving strip of material passing beneath it. In another form (Fig. 7, not shown) the device may be used to lift other than flat-topped articles.
Patent GB-814805-A (GB)
Title: Improvements in and relating to igniters for explosives
IPC: F42B3/12
Filed: 1955-08-09
Abstract: 814,805. Electric blasting igniters. DYNAMIT - ACTIEN - GESELLSCHAFT VORM, A. NOBEL & CO. Aug. 9, 1955 [Dec. 24, 1954], No. 22934/55. Class 9(1) An electric detonator adapted to be fired by high frequency energy from a portable transmitter, more particularly by ultrashort waves, comprises a sheet metal or pasteboard casing enclosing a matchhead 1, a primary charge 4 and a base charge 5. The stopper surrounds leads 2a of a dipole receiver 2, the leads being connected by a filament within the match-head 1. A delay element 6 may be incorporated between the match-head and the charge 4. The transmitter may radiate either a single predetermined frequency or a plurality of predetermined frequencies whereby groups of detonators responsive to different energies or frequencies may be fired in succession. The same effect may be achieved by polarizing the signals transmitted for the different groups and arranging the dipoles of the groups in different polarization planes. Delay elements which vary from group to group may also be used and the dipoles may be provided with reflectors of pasteboard or paper covered with metal foil or sprayed with metal. The transmitter may be provided with an automatic switch cutting off transmission after each radiation.
Patent GB-428746-A (GB)
Title: Improvements in apparatus for the manufacture of artificial yarns
IPC: D01D7/02
Filed: 1933-11-15
Abstract: <PICT:0428746/IV/1> Apparatus for the manufacture of artificial silk comprises a device for carrying along filaments 29 by means of a current of air, characterized by a block 45 which receives the air and filaments having chambers, such as 47 and 48 within the block, through which the air and filaments pass.  The air current may be produced by pressure or suction.
Patent GB-639480-A (GB)
Title: Improvements in or relating to implements for mending ladders in knitted fabrics
IPC: D04B17/04
Filed: 1947-08-19
Abstract: 639,480. Sewing. JOHO, O., and JOHO, H. Aug. 19, 1947, No. 22997. Convention date, Aug. 8, 1946. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 19, 1947.] [Class 112] In a relooping needle comprising a hollow shank with a hook and a spring-biassed member adapted to close the hook, the point of which enters a recess in the member when closed, the shank is of channel section and the hook-closing member is rockable about a transverse axis, means being provided for varying the strength of the spring action to suit different fabrics. In the form shown, the hookclosing member is in the form of a sector 10 pivoted at 20 and connected to a wire forming an extension of a tension spring 26 wrapped round the shank 1 and attached to a handle 21 which is adjustable on the shank, to vary the spring tension, and held thereon by a screw 25 engaging one of three notches in the shank. The underside of the hook 2 is inclined to facilitate operation of the needle. In a modification (Fig. 3, not shown) the member 10 has fixed to it one end of a leaf spring, the other end of which engages an abutment member adjustable along the shank to vary the stress and effective length of the spring.
Patent GB-420586-A (GB)
Title: Improvements in electric discharge tubes
IPC: H01J17/04
Filed: 1934-08-09
Abstract: 420,586. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Aug. 9, 1934, No. 23072. Convention date, Sept. 11, 1933. [Class 39 (i)] In a gas-filled discharge tube, such as a rectifier having an incandescent cathode, the leads of one or more electrodes are protected by a plurality of contiguous insulating tubes, each join between the tubes being protected by an exactly fitting cylinder, preferably of metal. As shown in Fig. 1 an anode 4 has a lead 3 protected by a glass tube 5 sealed to the pinch, and a steatite or porcelain tube 6, the join 8 being protected by a metal tube 9 produced by the Schoop process. In a modification, Fig. 2, the tubes 5, 6 are of different diameters and the tube 5 is provided with a thickened edge 10 to secure the member 9 from sliding. The tube 5 may be frosted for the same purpose but this increases its fragility.
Patent GB-495586-A (GB)
Title: Improvements in or relating to pressure gauges for indicating the depth of liquid ina tank
IPC: B63G7/04
Filed: 1937-08-23
Abstract: 495,586. Pressure gauges. GIERS, C. A. DE. Aug. 23, 1937, No. 23087. Convention date. June 16. [Class 106 (ii)] An instrument for indicating the depth of liquid in a tank comprises a sylphon having a closed end upon which the pressure fluid acts and an open end with a stem attached to the inside of the closed end and extending to engage at right-angles one arm of a pivoted lever, the other arm of which is engaged at right-angles by a spring. The pipe 30 is in communication at the lower end with a pipe through which compressed air is supplied to a small bell located at the bottom of the liquid tank. The liquid is first forced out of the bell and then the supply shut off and the liquid head allowed to compress the air in the pipe system. The air enters an hermetically sealed chamber 32 carried as a unit with the gauge mechanism, forces down the closed end 36 of the sylphon which through a pointed stem 40, acts on one end of a lever 46 pivoted on a knife edge 48, and acted upon at the other end by a spring 60 acting through a yoke 54 and point 52. A link 74 transmits motion through a toothed quadrant and pinion 76, 82 to the pointer spindle. An adjustable cam 86 constitutes a stop for the lever and may be moved around so that the arm 90 locks the lever when the instrument is to be transported. The tension of the spring 60 may be adjusted by shifting the plugs 58 and passing the pins 92 between different convolutions.
Patent GB-1313267-A (GB)
Title: 4,4,-diaminobiphenyl derivatives and their use as chromogens
IPC: C07D223/16
Filed: 1971-04-19
Abstract: 1313267 4,4<SP>1</SP>-Diamino-biphenyls KABI AB 19 April 1971 [6 March 1970] 23109/71 Heading C2C The invention comprises compounds of the general formula and salts thereof with acids or bases wherein n represents 0 or 1, A represents an alkylene chain having at least 3 carbon atoms in the chain linking (O) n  and X, and X represents a carboxylic acid group, or, when n represents 1, x represents a sulphonic acid group. When n= 1 the compounds may be prepared from odianisidine by demethylation of the methoxy groups and acylation of the amino groups, coupling of the desired side chain and removal of the acyl groups. When n = 0 and X is a carboxylic group the compounds are prepared transferring a compound of the formula into the corresponding halogen (preferably iodine) compound of the formula, reacting this compound with copper (Ullmann reaction) to give a compound of the formula which upon hydrolysis gives the desired product. The compounds of the invention may be used as chromogens in the analytical array of compounds which form hydrogen peroxide by means of a specific oxidase or reductase.
Patent GB-1430639-A (GB)
Title: Nofat dry beverage whitener composition
IPC: A23L27/30
Filed: 1973-05-15
Abstract: 1430639 Beverage whitener ABBOTT LABORATORIES 15 May 1973 23136/73 Heading A2B A nonfat dry beverage whitener comprises in combination a sweetening agent, for example a starch hydrolysate, calcium caseinate or calcium-sodium caseinate, titanium dioxide, and an artificial milk or cream flavour. Optional ingredients include chemically modified starch, vegetable gum, antifoam agents, and dipotassium phosphate.
Patent GB-310792-A (GB)
Title: Improvements in cutting mechanisms
IPC: B26D7/02
Filed: 1928-08-10
Abstract: 310,792. Brackett, E. M., and Brackett, F. M. April 30, 1928, [Convention date]. Delivery apparatus.-In a cutting- machine the severed sheet is removed by a delivery table reciprocated by a constantly rotating shaft through a slipping clutch controlled by the knife slide. The knife 6 is reciprocated in side guides from a crank and is connected by a pin and slot with a clampbar 15. The sliding end gauge is positioned by a finger on the gauge engaging stops 5<1> adjustable in grooves in a cylinder 56. A sectional ratchet cylinder 60 is driven through a slipping- clutch 72 from a power shaft 67. A pawl 86 is adjustable on a shaft 85 actuated against spring pressure by a finger 90 on the knife slide. The ratchet cylinder comprises ratchet wheels with 1, 2, 3, &c. teeth corresponding with the grooves in the cylinder 56. By adjusting the pawl 86 to engage the appropriate ratchet wheel and setting the stops 5<1> the number of gauge setting per stroke of the gauge may be varied. A delivery table 63 is reciprocated by a crank 72<1> from a cam 102 driven through a slipping-clutch 82, Fig. 2 (not shown), from the power shaft. Movement of the cam 102 is controlled by fingers 116, 117 associated with sliding bars 118, 119 selectively actuated by adjusting pins 1<c> in extreme position in a member 125 on the shaft 33 carrying the ratchet cylinder 60. When the pins are in central position the table is not actuated.
Patent GB-925405-A (GB)
Title: Polishing composition
IPC: C09G1/08
Filed: 1961-06-27
Abstract: A polishing composition comprises by weight (a) 15,2% carnauba wax, (b) 0,25-5%, preferably 1%, of a microcrystalline wax having a minimum melting point of 180 DEG F., a maximum penetration (77 DEG F./100 g.) of 7, an acid number of 22-28, and a saponification number of 50-60, most suitably an oxidized microcrystalline wax, (c) 9-13%, preferably 11,8%, of paraffin wax having a minimum melting point of 130-132 DEG F., and (d) 67-77%, preferably 72%, of a hydrocarbon solvent for waxes (a), (b) and (c), suitably a mineral spirit having a kauri-butanol number of 20-105.