baber/WOPTO huggingface dataset:
Patent GB-685725-A (GB)
Title: Improvements relating to light projection and viewing equipment for turrets of tanks and other vehicles or ships
IPC: G02B23/08
Filed: 1950-07-14
Abstract: 685,725. Viewing objects by infra-red rays. MITZAKIS, A. V. M. July 11, 1951 [July 14, 1950], No. 17725/50. Class 40 (iii). An optical projection and viewing apparatus for use in the turrets of tanks and other vehicles or ships of the type having a light projector mounted therein includes an infra-red screen which can be introduced into the beam of the light projector, and the turret is formed with an aperture which is normally closed by a shutter and behind which is disposed an infrared image converter. As shown in the drawings, the turret, which is rotatable, contains optical apparatus 6, 7, 9 for projecting a beam of light through an aperture 10, and a periscope 30, 31 for normal viewing. For viewing by infra-red light, a screen 40 is placed in the light beam and the observer then views by infra-red image converter 45 mounted in front of a second aperture 44. A spring-loaded shutter 46 normally closes aperture 44 and is lowered through a forward movement of the observer's seat 36 by a cable and pulley system 48, 49. This movement may also be employed to position screen 40 in the light beam. The light projector can be elevated and depressed through a few degrees by curved rack 19 engaged by a pinion 20 driven through chain 24 from handle 26. The projector pivots about 18 and a corresponding motion is imparted to the image converter, which pivots about 55, by a chain-engaging sprockets 56, 57. A counter-weight 28 is provided sliding in guides 29. Aperture 10 can be closed by shutter 11 positioned by motor 12 driving through a rack- and-pinion mechanism.. The image converter, Fig. 3 (not shown), comprises, in an evacuated envelope, a photo-cathode from which an electron image is obtained and brought to focus on a luminescent screen. The screen is viewed by means of two inclined mirrors carried on flaps 71, 72, flap 71 being made of bullet-proof steel in order to protect the observer.
Patent GB-350241-A (GB)
Title: A practising or training device for cricket and like games
IPC: A63B69/00
Filed: 1930-06-07
Abstract: 350,241. Cricket - practising appliances. NAGLE, S. C., 3, Farquhar Road, Crystal Palace, London. June 7, 1930, No. 17734. [Class 132 (ii).] A games-practising device particularly for cricket comprises a ball secured by a short ligature to a transverse elastic cord both ends of which are anchored intermediate the ends of two other cords secured to means such as upright poles, the weight of the ball acting on the elastic cord causing the ball when stationarv to be in contact with the ground. The ball 4 is secured to a cord 5 connected by a swivel 7 to an elastic cord 6 secured at its ends by swivels 9 to the centres of two preferably elastic cords 8 which are themselves attached to uprights supported by guy ropes 13 and connected by a rope 12. In a modification, Fig. 3, the ends of the cords 8 are secured to short beams 15 attached by cords 16 to endless cords 17 passing round pulleys 18, the horizontal position of the cord 6 then being adjustable. In a further modification one end of each cord 8 is attached to an upright and its other end to the cord 12. The cord 5 may be secured to the ball by first sewing to the latter a loop of leather. The uprights may be made in detachable sections.
Patent GB-647525-A (GB)
Title: Improvements in hoists
IPC: B66B9/16
Filed: 1946-06-13
Abstract: 647,525. Hoists; winding and paying-out apparatus. EVANS, P. N. June 13, 1946, No. 17753. [Classes 78 (iii) and 78 (v)] A hoist of the kind in which a load-carrying platform is raised up a mast by a cable connected to a power-operated winch, and a single control member controls the winding or unwinding of the cable to hoist or lower the platform or for arresting the cable to hold the platform in a desired position, comprises manual control means for moving the control member and a mechanical coupling for transmitting force from said control means to the control member, said mechanical coupling including a member located at a point on the mast beyond which the travel of the platform is to be limited, said member being adapted to be moved by the platform on travel thereof past that point, whereby the control member moves to a position to arrest said cable and thereby limit the travel of the platform past the said point. As shown, a platform 24 is hoisted along a mast 22 by a cable 30 passing over rollers 33, 32, 31 to a winch drum 15 which can be driven by a friction pinion 13 engaging its driving surface 14, the pinion being driven by an engine 12 through a chain drive. The winch shaft is mounted at its ends in eccentrics 16 so that normally under the influence of its own weight and a weighted lever 17 the driving surface 14 is out of engagement with the pinion 13 and in engagement with a brake shoe 18 whereby the platform is held against movement. When it is desired to lower the platform, the surface 14 is removed from the brake shoe 18 by an operator pulling on a rope 36 connected to a lever 34 whereby through a cable 35, the lever 17 is raised so as to turn the eccentrics 16. If the rope is pulled harder, the surface 14 engages the pinion 13, whereby the drum is rotated so as to wind-in the cable 30 and hoist the platform. When the platform reaches the level of the lever 34, it causes the lever to pivot and thereby release the lever 17 and allow it to fall and disconnect the winch from the engine drive. The lever 34 is pivotally mounted on a member 37 which can be secured at any desired position on the mast. The hoist may be provided with road wheels.
Patent GB-477357-A (GB)
Title: Improved method and means for governing and controlling the flow of air for actuating the striking pneumatics in player pianos and the like pneumatically operated musical instruments
Filed: 1936-06-26
Abstract: 477,357. Player-pianos etc.; pressureregulating valves. DELASAIRE, J. June 26, 1936, No. 17805. [Class 88 (i)] [Also in Group XXIX] A unitary device to be inserted between the main suction (connected at 2) and the action (connected at 1) of a player-piano or the like, for both regulating the air-tension and setting the degree of loudness, comprises a tube 3 with two coaxial pistons 6, 7 projecting into the passageway 2, 1. Piston 6, perforated at 15 to prevent formation of an air-cushion, is adjusted, manually or otherwise, by a rod 8 passing air-tight through a gland 9, to determine loudness. Piston 7, controlled by a spring 11 attached to a screw 12 adjustable in a cap 13 perforated at 14, automatically maintains the working suction constant.
Patent GB-868692-A (GB)
Title: Method of and apparatus for making dished receptacles
Inventor: SENIOR HENRY
IPC: B31B3/28
Filed: 1958-06-04
Abstract: 868,692. Making dished receptacles. BRITISH XYLONITE CO. Ltd. May 25, 1959 [June 4, 1958], No. 17854/58. Class 18. [Also in Group XXII] Pans are made from sheet material blanks 11a by clamping the bottom-forming section of the blank between shaping members 55, 57 which reciprocate together to cause folding tools 65, 66, 64 to fold up the sides, fold the corner flaps 67 down on to the adjacent side walls, and turn over the margin of the pan to form a smooth rim. A web of aluminium foil is fed intermittently from a roll to a punch which cuts opposite notches in the edges, and on to a platen 58 with hinged side wings 65, 66. A die 55 of the shape of the pan then descends and the web is clamped between the die and the platen, Fig. 7 ; simultaneously a guillotine severs the blank 11a from the web and the punch cuts the corner notches in the web for the next blank. Further descent of the die pushes down the platen against springs 63, fixed abutments 68, Fig. 11, turn up the side wings 65 and spring-pressed plungers 71 then turn up the end wings 67 thus leaving projecting double thickness flaps 11b, Fig. 8. As the assembly continues to descend, an abutment 82 is moved out of the path of the plungers 71 allowing the end wings 66 to drop, whereupon abutments 92 operate bell-crank levers to swing corner folding wings 67 pivoted at the ends of the side wings 65 into the position shown in Fig. 9 to fold the flaps 11b onto the ends of the tray. The die and platen then commence their upward movement and the bell-cranks leave the stops 92 so that tension springs can swing back the corner wings 67, and the side wings 65 drop, Fig. 10. Hinged to the upper edges of the die 55 are four rim-folding bars 64 operated by toggle levers 94, 95 through an operating finger 98 co-operating with a catch pivoted on the machine frame. During the downward movement of the die the catch is pushed aside withoutoperating the bars 64, but during the upward movement it swings the finger 98 to turn down the rim-folding bars 64 as shown in Fig. 10 to form a double rim and lock the flaps 11b in place. The platen 58 stops when it has reached its normal level, Fig. 11 and the die continues to rise carrying the completed pan with it ; air under pressure is then applied successively to downwardly and sidewardly directed sets of passages in the die to release the pan and then to blow it sidewardly out of the machine. The machine is adjustable for making different sizes of pan.
Patent GB-1384886-A (GB)
Title: Storage bunker
Inventor: WRIGHT HAROLD
IPC: E04H7/26
Filed: 1971-05-28
Abstract: 1384886 Storage bunker BRITISH IRON & STEEL RESEARCH ASSOCIATION 25 May 1972 [28 May 1971] 17867/71 Heading B8S A storage bunker for coke, iron ore &c. comprises an upper zone defined by upstanding walls and a lower zone defined by walls inclined downwardly towards each other to form an outlet, the zones meeting at an internal angle of less than 180 degrees to form a transitional wall portion which has greater strength per unit area than the upstanding or inclined walls. In the figure, the bunker is made of reinforced concrete with upstanding walls 6 which are outwardly vertical with an inclined inner surface so that the walls 6 thicken towards the transitional wall portion 14. The lower zone is defined by inclined walls 10 which become thinner towards the outlet 12. Alternative embodiments (Figs. 3 and 4, not shown) provide a vertical inner surface for the upstanding walls (and thus an inclined outer surface in order that the transitional wall portion may be thicker) and extra reinforcement is provided at the transitional wall portion instead of thickening the walls.
Patent GB-532383-A (GB)
Title: Improvements in the methods of copying sound films and films for use therein
IPC: G11B11/00
Filed: 1939-06-19
Abstract: 532,383. Photographic sound-record films. PHILIPS LAMPS, Ltd. June 19, 1939, No. 17893. Convention date, June 21, 1938; Drawings to Specification. [Class 98 (ii)] The so-called "lens effect" which is observed i n a positive photographic copy made from a negative printed on a silver emulsion layer from a mechanically-produced sound-record film, i.e. striations in the transparent sound track due to irregular refraction of the light traversing the cut track, is avoided by either choosing for making the negative an emulsion layer of such a character, or developing a normal emulsion layer used for the negative in such a way, that the characteristic curve in the region of the blackening usually required for such records exhibits a gamma which is either a minimum or decreases with increasing exposure, and that the difference between the minimum blackening due to the "lens effect" and the bright parts is at least 0.8. The positive is printed from this negative on ordinary positive stock and developed normally. The original may be a track cut according to the variable-depth-variable-width method by a V-shaped chisel through a black coating into a gelatin layer on the film. The Specification gives and discusses several characteristic curves of sensitive material suitable for the firstmentioned method of making the negative. In one, the straight part is interrupted in the region of the usual blackening by a horizontal or nearly horizontal portion ; in another, the curve rises to a maximum in the said region and thereafter descends ; while in a third, the curve, after rising steeply at first, becomes horizontal or much less steep in the said region. The material may comprise two sensitive emulsions in super-imposed layers and of different response to a definite kind of light, the top layer may be a panchromatic or a silver bromide emulsion, and the under layer a non-panchromatic or a paper silver chloride emulsion. The layers may have the same or different gammas. Alternatively, such emulsions may be mixed in a single layer. As a further alternative, a very thin emulsion layer, less than 6 Á thick, on an antihalation substratum may be used. Development is normal in all these cases. The second-mentioned method of making the negative may be carried out by abruptly interrupting the development of the normal emulsion layer so that it is blackened only to a limited depth, using a slowed developer containing a high percentage of alcohol, glycerine, or acetone, e.g. 10 per cent., or 20 per cent. of sodium sulphite.
Patent GB-363327-A (GB)
Title: Improvements in and relating to the production of sulphuric acid
IPC: C01B17/86
Filed: 1930-06-11
Abstract: <PICT:0363327/III/1> In the manufacture of sulphuric acid, the hydration of the sulphur trioxide produced, is effected substantially completely in the liquid phase by using sulphuric acid, e.g. of 50 per cent concentration in the reaction vessels.  Considerable oxidation also takes place in the liquid phase, the gases being forced or drawn through the reaction liquid in a finely divided state. Nitric acid or nitrosylsulphuric acid is supplied as the oxidizing agent and the nitrous gases liberated may be absorbed in water, sulphuric acid or nitric acid.  In the Figure shown the sulphur dioxide gases enter a reaction vessel A through a pipe a, and leave through a pipe d, after passing through a number of shelves c provided with holes, slits or cups.  The nitrous gases are absorbed in a similar vessel B which is supplied with nitric acid or other absorption medium, the nitrosylsulphuric acid being returned to the vessel A by the pipe k.  In order to reduce the temperature of the reaction, cold gases or air may be passed into the vessel A, but preferably the exit gases in the pipe d are reintroduced, after passing a cooler C.  Liquid which is condensed from the gases is drawn off by the pipe P.  When gases containing a high concentration of sulphur dioxide are used, additional air may be introduced through a pipe s, to re-oxidize the nitrous gases.  Gases from the top of the vessel A may be withdrawn at g and re-introduced through the pipe r.
Patent GB-1253332-A (GB)
Title: Cyanimides
Inventor: BUCHMANN GERHARD
IPC: C07D295/14
Filed: 1970-04-15
Abstract: 1,253,332. Cyanimides. CHEMIEKOMBINAT BITTERFELD VEB. 15 April, 1970, No. 18010/70. Heading C2C. Novel cyanimides of the general formulae: wherein R is an optionally substituted amino group the nitrogen atom of which may also form part of a heterocyclic radical are prepared by reacting a dimethylthiocyanimide of the formula: with an aliphatic, aromatic or heterocyclic amine at an elevated temperature, optionally in alcoholic solution. Suitable specified amines include isopropylamine, isohexylamine, #-aminocapronitrile, aniline, p-chloroaniline, p-anisidine, o-toluidine, benzylamine, #-phenethylamine, phenylhydrazine, morpholine and piperidine.
Patent GB-455316-A (GB)
Title: Improvements in ash and dust handling plant for power stations and the like
IPC: F23J1/00
Filed: 1935-06-24
Abstract: 455,316. Ash &c. handling plant for steam boilers. ASH CO. (LONDON), Ltd., and SILK, P. B., 63, Lincoln's Inn Fields, London. June 24, 1935, No. 18069. [Class 51 (i)] In a steam-boiler plant having gas washing apparatus and ash hoppers receiving ashes from the furnace, the effluent from the gas washing apparatus is led into the ash hoppers. As shown, the gases from the furnace finally pass through a flue 11 to a longitudinal flue 12 having water sprays 14, the washing water being led from hoppers 17 through a pipe 18 to the ash hoppers 3 where it is filtered by the ashes from the grate 2. The filtered water passes along ducts 5, 6 to a sump 10 and is supplied by a pump 16 and pipes 15 to the sprays 14. Pumps 9 deliver water for sluicing ashes from the base of the hoppers into a compartment adjacent to and communicating with the sump 10 provided with pumps for removing the ashes. A modified form of ash hopper is shown at 20, the ashes being discharged into a truck 21 while the water flows from the hopper to a drain 23. Specifications 227,111, 329,840, [both in Class 51 (i)], and 341,033 are referred to.
Patent GB-225900-A (GB)
Title: Twist drills
IPC: B23B51/02
Filed: 1923-07-12
Abstract: 225,900. Oliver, E. C. July 12, 1923. Drills.-In a twistdrill made by means other than the machine described in Specification 206,591, the front face is provided with clearance such that straight lines drawn on the face are inclined at approximately the same angle to the drill axis as the cutting edges, but adjacent the drill point the lines are connected to the point by short curves whose depth increases with the distance from the cutting edges. The cutting edges 2 are made longer than usual by reducing the angle B to about 100, and depressions 7 are formed in the face by feeding a grinding-wheel axially into the drill while it is being revolved, the depressions increasing in depth from near the cutting edges to the rear of the drill thus forming further cutting edges 1 at the point. In Fig. 5, the line A represents the cutting edge 2.
Patent GB-662297-A (GB)
Title: Improvements relating to the manufacture of hollow cylindrical glass bodies
IPC: C03B23/047
Filed: 1949-07-08
Abstract: 662,297. Glass. SCORAH, L. V. D. April 27, 1950 [July 8, 1949], No. 18084/49. Class 56 A hollow cylindrical glass body is formed from a tube a, whose internal diameter is less than that required, by causing a drift d, c to be progressively moved through the tube while the tube and drift are relatively rotated and while the tube is locally heated at a position e immediately ahead of the drift. A short length of tubing b of larger diameter than that required is conveniently fused to one end of the tube a and gripped in the chuck of a hollow spindle lathe or like headstock. The drift consists of a rod c of metal, carbon, or other suitable material, and a forward end d shaped so that it presents at least two working edges to the interior of the tube, i.e. of oblong, square, triangular or other section, and of such dimension as to form the required bore in the tube. The part d may be tapered at the forward end. The tube is locally heated, e.g. by a blowpipe to bring it to a plastic condition. Alternatively the tube may be held stationary and the drift rotated, or both may be rotated, and the axial movement may be imparted to the tube instead of or in addition to that of the drift.. The tube may be cut into required lenghts, and may be.treated by an abrasive or polishing action where extreme accuracy is required.
Patent GB-898004-A (GB)
Title: Drill bits
Inventor: HOWELLS JOHN
IPC: E21B10/60
Filed: 1958-06-06
Abstract: 898,004. Diamond drill bits. IMPREGNATED DIAMOND PRODUCTS Ltd. June 3, 1959 [June 6, 1958], No. 18214/58. Class 124. A drill bit having a head with a diamond impregnated cutting surface is provided with an axially inclined eccentric bore, part of the surface of which is surfaced with an abrasive. As shown, the head 1 has a cutting surface 3 and an axially inclined, eccentric bore 6 preferably of oval section which opens into a diametral slot extending over the sides of the head as a groove 5. A rectangular section lubricant passage 10 communicates with the slot and a second passage 11, in open communication with the bore may be provided. A part 9 of the surface of the bore may be impregnated with diamonds, and the angle of inclination of the bore may be such that the ends 7, 8 of the bore do not completely overlap.
Patent GB-1165783-A (GB)
Title: Improvements in or relating to Liquid Level Indicators
Inventor: JOHNSTON JAMES STEWART
IPC: G01C13/00
Filed: 1967-04-20
Abstract: 1,165,783. Liquid level detectors. ROSEMOUNT ENG. CO. Ltd. 16 April, 1968 [20 April, 1967], No. 18248/67. Heading G4H. A liquid level detector includes a plurality of sensors 11 positioned in the liquid, the outputs from which are converted to coded signals (preferably binary) on leads 13 which enable gates 14, 15, 16 . . . to which are fed non- coincident pulses at a rate in accordance with the weight of the coded signal 13 fed to that gate, the pulses being counted in a counter 41. In the embodiment described, an oscillator 20 supplies pulses to a binary divider chain 21, 22, 23 . . . each connected to an AND gate 14, 15, 16 . . . the parallel binary coded signals 13 being derived from a detector unit 12 connected to the sensors 11 which is preferably as in Specification 1,110,175, the outputs of the AND gates are fed via an OR gate 30 to the counter 41 which is preferably gated by a further counter pulsed by oscillator 20. The count may be displayed, recorded or punched on magnetic tape or transmitted by radio link to a remote point. The mains supply may be used in place of the oscillator.
Patent GB-292926-A (GB)
Title: Improvements relating to the processes of treating foods and products thereof
IPC: A23L3/26
Filed: 1928-06-25
Abstract: 292,926. British Thomson-Houston Co., Ltd., (Assignees of Knudson, A.). June 24, 1927, [Convention date]. Vitamins. - Food materials are treated with high velocity electrons, e.g. from a high voltage cathode ray tube, to obtain or increase vitamin D content. The materials used include breakfast foods, flour, cereals, yeasts, starch, cholesterol, olive, cottonseed and other oils, and cattle, chicken and other animal foods. An example of the treatment, of cholesterol is described.
Patent GB-1195600-A (GB)
Title: 5-(o- and p-Hydroxyanilino)-1,2,3,4-Thiatriazoles and method of and making same
IPC: C07D285/01
Filed: 1968-04-18
Abstract: 1,195,600. Thiatriazole derivatives. ABBOTT LABORATORIES. 18 April, 1968 [8 May, 1967], No. 18468/68. Heading C2C. 5 - (o - and p - Hydroxyanilino) - 1,2,3,4 - thiatriazoles are prepared by culturing a microorganism of an order selected from Moniliales, Mucorales, Agaricales, Polyporales and Actinomycetales in an aqueous nutrient medium containing assimilable sources of nitrogen and carbon and 5-anilino-1,2,3,4-thiatriazole. These compounds are antihypertensive agents.
Patent GB-248627-A (GB)
Title: Support for bicycles
IPC: B62H3/00
Filed: 1925-07-20
Abstract: 248,627. Melles, P. July 20, 1925. Stands for bicycles comprise a support d provided with a vertical stud rotatably mounted on a ball bearing in the upper end of a pedestal c, supported on a base-plate a provided with ball-shaped feet, the support d being provided with a pivoted holder e of semi-circular crosssection adapted to support the upwardly-inclined frame tube of the bicycle, and with a member f adapted to support the chain stays and fitted with a bolt g, a spring h, a transverse clamping-member i, and a thumb-nut k.
Patent GB-1046815-A (GB)
Title: Differential pressure responsive device
Inventor: MANSFIELD GEORGE ALBERT
IPC: F02C7/262
Filed: 1964-05-04
Abstract: 1,046,815. Gas turbine plant. HOLLEY CARBURETOR CO. May 4, 1964, No. 18504/64. Heading F1G. [Also in Division G1] In a device for detecting the rate of change in a source of pressure, such as occurs in a gas turbine engine during flame-out, a chamber 50 is in continuous communication, through an inlet 22, with a steady state compressor discharge or a burner chamber air pressure and through a restricted passage 70 with a further chamber 48 and provided the pressure in chamber 50 does not drop below a predetermined value a diaphragm is held in a deflected position to hold a link assembly 56 against a stop 208. Should the pressure in chamber 50 drop the diaphragm 42 will deflect to move assembly 56 upwards to effect a snap action of a toggle 94 to open contacts through a lever 116 and thus effect a circuit to the engine igniters and to lift a spring loaded valve 198 in a passage connecting the chambers 50, 48.