baber/WOPTO huggingface dataset:
Patent GB-847584-A (GB)
Title: Improvements in or relating to a method of increasing the deuterium content of liquid ammonia and/or hydrogen gas and apparatus therefor
IPC: B01D59/32
Filed: 1959-03-16
Abstract: <PICT:0847584/III/1> In a process of producing deuteriumenriched NH3 and/or H2 by a dual temperature isotopic exchange process between countercurrents of liquid NH3 and H2 gas in a cold and hot column, an additional cold column is provided in which the H2 and liquid NH3 are also passed in countercurrent contact.  Liquid NH3, containing potassium amide catalyst, is passed through cold, e.g. above -77 DEG C., say -20 DEG C., columns I, II and hot, e.g. below 133 DEG C., say 130 DEG C., column III, and at least part is recycled to I, while H2 is passed countercurrent through III, II, I, and at least part is recycled to III.  The columns may be packed or contain bubble caps, and the pressure may be up to 1000 atms., say 300 atms.  NH3 is depleted in D in III, and H2 is depleted in D in II, I, the period of contact in each column being such that D depletion is a maximum. Enriched NH3, or H2, or both is withdrawn at P2, P1 and fresh feed is supplied at F2,F1.  A plurality of stages each consisting of the above two cold and a hot column may be used to increase the enrichment.
Patent GB-595673-A (GB)
Title: Thermionic valve circuit
IPC: H03F3/36
Filed: 1944-05-11
Abstract: 595,673. Valve amplifying circuits photo-electric photometers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 11, 1944, No. 9031. Convention date, May 11, 1943. [Classes 40 (iii) and 40 (v)] [Also in Group XXXVI] In an amplifier in which the anodes of the valves are fed with A.C., successive valves are energized in opposite polarity, the output of each valve being fed to a condenser, the potential of which controls the operation of the succeeding valves. The frequencies employed may vary from those of the mains to ultrahigh. During one half cycle of the supply, Fig. 2, valve 1 conducts, charging condenser 3 which determines the bias on valve 2 during the.succeeding half cycle, the time constant of condenser 3 and resistor 4 being long compared with a cycle of the supply. The process is continued through the amplifier to a final indicator 65. The bias on valve 1 is varied by potentiometer 30 and is adjusted to make the currents of all the valves equal with no input signal. To avoid grid current in valve 1 when the anode is negative with respect to the grid, the bias may be provided by means of a cathode resistor and decoupling condenser, Fig. 19 (not shown), the condenser being charged from line 12 through a variable resistor and diode. A curve, Fig. 4c (not shown), shows the variation in the response of the amplifier with variations of input frequency. To amplify speech frequencies, Fig. 11, the supply frequency is made higher than the highest audio-frequency to be amplified and the time constant of condenser 3 and resistor 4 is reduced. To maintain the response of the amplifier at the higher frequency a resonant circuit comprising inductance 131 and condenser 133 is included between valves 1 and 2. Valve 1 may be biassed by condenser network 128, 129, inductance 130 being included. Modulated radio-frequency currents may be applied to the amplifier, the valve 1 acting as a demodulator, the speech currents only passing through to the loud-speaker. For measuring the intensity of light, Fig. (i, a photo-electric tube 69 is connected to the input of the amplifier, the current through the tube causing a corresponding indication on meter 65. Specification 595,674 is referred to.
Patent GB-180485-A (GB)
Title: Improvements in or relating to pouring apparatus for centrifugal casting machines
IPC: B22D13/10
Filed: 1921-03-24
Abstract: 180,485. Hurst, J. E., Ball, E. B., and Centrifugal Castings, Ltd. March 24, 1921. Casting-machines; metal-pouring.-Centrifugal casting-machines are provided with two or more trough shaped pourers to deliver metal to the mould consecutively or simultaneously. The pourers C<1> are arranged at the same end or at opposite ends of the mould A and at the same or different levels or longitudinal positions. They are rotatably mounted on trucks E so that they can be introduced by hydraulic cylinders G or otherwise and tilted either simultaneously or consecutively to discharge their contents by hydraulic cylinders H and racks &c. J.
Patent GB-918364-A (GB)
Title: Vinyl chloride polymer resin compositions stabilized for use in food packaging
IPC: C08K5/098
Filed: 1961-03-13
Abstract: A stabilizer system for vinyl chloride polymers is a combination of both calcium and zinc salts and comprises, by weight, 1 part of calcium and/or zinc benzoate, between 3/8 and 3 1/3 parts of zinc and/or calcium salts of mixed fatty acids derived from edible fats and oils and between 1/2 and 4 parts by weight of sorbitol or pentaerythritol.  Fats and oils specified are tallow and coconut, cottonseed, soyabean, corn and peanut oils; they may be hydrogenated. Vinyl chloride polymers specified are polyvinyl chloride and copolymers of vinyl chloride with vinyl acetate, vinylidene chloride, maleic or fumaric acid, or styrene.  Optional ingredients which may be included in the stabilized vinyl chloride polymer composition are other resins, e.g. chlorinated polyethylene or a copolymer of acrylonitrile, butadiene and styrene, and plasticizers, e.g. dioctyl phthalate or octyl diphenyl phosphate.
Patent GB-815183-A (GB)
Title: Purification of silver hyponitrite
Inventor: SCOTT GERALD
IPC: C01G5/00
Filed: 1957-03-20
Abstract: Crude silver hyponitrite contaminated with silver oxide, chloride or carbonate is purified by dissolution in an aqueous solution of a nitrogenous base (e.g. ammonia, an alkylamine or cycloalkylamine or pyridine), filtering the solution, progressively removing the base until the white precipitate first formed begins to turn yellow, removing the precipitate and continuing the removal of base to precipitate silver hyponitrile. The removal of the free base may be achieved by adding a weak acid, e.g. acetic acid, or by distilling under reduced pressure preferably below 40 DEG  C.  In the process it is desirable to use strong solutions, with minimum amounts of the base and temperatures of 10-20 DEG  C.  The product may be washed with water followed by acetone and dried at 30-35 DEG  C.  The Provisional Specification refers specifically to cyclohexylamine as a nitrogenous base.  A prior art statement refers to purification by dissolution in sulphuric acid followed by filtration and addition of aqueous sodium carbonate.
Patent GB-1359445-A (GB)
Title: Electrically insulating pipe couplings
IPC: F16L25/02
Filed: 1973-02-23
Abstract: 1359445 Pipe couplings EISENBAU ALBERT ZIEFLE KG 23 Feb 1973 [4 March 1972] 9121/73 Heading F2G An electrically insulating junction member, for coupling into a pipeline, has insulating layers coated on opposing frusto-conical surfaces, which are pressed together, by a ring 16. The layers, including an additional layer 17, which may be of nylon, are coated by a cyclone sintering process. A nylon sealing ring 4 may be omitted. In another form rings 16 and 18 are formed as a single member. On assembly, the screwthreads 15 and the surfaces 5 and 8 each have a hardenable adhesive applied to them.
Patent GB-1001731-A (GB)
Title: Insulated tube coupling
IPC: F16L25/02
Filed: 1964-03-04
Abstract: 1,001,731. Tube couplings. UNITED STATES ATOMIC ENERGY COMMISSION. March 4, 1964 [June 5, 1963], No. 9135/64. Heading F2G. A coupling for metal tubes is arranged to insulate the tubes from one another to avoid electrolytic corrosion and to provide a continuous cylindrical surface of constant diameter from one tube to the other to reduce turbulence. The tubes 1, 2 have collars 4, 18 threaded on to their ends, and glands 5, 19, which are engaged behind the collars, are screwed into a metal block 7 and a housing 8 respectively so that chamfered ends 11, 21 of the tubes fit in mating cavities of a metal block 12 and of the housing 8. The block 12 and the housing 8 have passages 13, 15 to correspond with those of the tubes. An insulator 22 is arranged between the block 7 and the housing, and an insulator 24 and sealing gasket 25 are arranged between the block 12 and the housing, the opposing faces of which are serrated. In assembly, the block 7 is passed laterally through a slot in the housing. The tube 2 may be insulated from the housing in the same manner as the tube 1.
Patent GB-426985-A (GB)
Title: Improvements in safety razors
IPC: B26B21/18
Filed: 1934-03-23
Abstract: 426,985. Safety razors. BLACK, W. H., 101, West 58th Street, New York, U.S.A. March 23, 1934, No. 9217. Convention date, March 29, 1933. [Class 30] The guard- and clamping-plates A, B have slots 8, 12 for the passage of cleansing water or drying air. Such fluid is admitted through the double-channeled handle 2, the outer channel of which directs it into an open-ended longitudinal cavity 3 in the guard A, whilst the inner channel, formed by a tubular clamping-nut C, directs fluid to both sides of the blade 5, through apertures 17 in the hollow clamping-screw 9. The blade is clamped near its edges only, and the clamping-nut C, which has an end knob 13, may be internally or externally threaded.
Patent GB-626768-A (GB)
Title: Improvements in or relating to electric heating appliances
IPC: H05B3/80
Filed: 1947-04-05
Abstract: 626,768. Two-part couplings. GRIMWOOD, C. L. April 5, 1947, No. 9234. [Class 38 (i)] [Also in Group XI] In an electric immersion heater (see Group XI), wherein the ends c of a length of tubular casing containing an electric heating element are secured to a junction box a, the junction box is provided with an adjustable two-pin plug consisting of two pins h, h<SP>1</SP> located in slots k<SP>1</SP> in an insulating block k by means of washers k<SP>2</SP> abutting against shoulders formed mid-way along the pins, and by washers and terminal nuts h<SP>3</SP> fitted on the internal end thereof. The sides of the box are held together by nuts and bolts b, and j is an earthing terminal. Specification 549,617, [Group XI], is referred to.
Patent GB-104613-A (GB)
Title: An Improved Method of Developing, Fixing and Washing a Number of Photographic Prints Simultaneously.
Inventor: NORTON FRANK WHITNEY
IPC: G03D13/02
Filed: 1916-07-03
Abstract: 104,613. Norton, F. W. July 3, 1916. Developing; liquid-circulating, developing, fixing, &c. apparatus.-In the development of photographic prints, a large number of prints are treated simultaneously by arranging them in a pack after they have been thoroughly wetted, and placing the pack edge-downwards in a tank containing liquid through which air is forced edgeways of the pack. The prints may be wetted by immersing them separately, and before development either in a tray, or in a container having a perforated bottom into which they are inserted edge-down, the container being placed in a tank of water and being afterwards used to convey the prints from one tank to another. Alternatively, the briefer operations of developing and subsequent rinsing may be performed separately for each print, and the prints may then be assembled to form a pack for the fixing and final washing. Fig. 1 shows an apparatus which may be used in the process, wherein a tank 1 is divided into compartments having perforated false bottoms 9, upon which the prints 10 may rest. The compartments 2, 4 are used for development and fixing respectively, and the compartments 3, 5 for washing. Air under pressure is admitted to each compartment by pipes 11, and water is admitted to the compartments 3, 5 by pipes 8 and passes away by pipes 12. The number of compartments may be increased, so that additional ones may be used for fixing and final washing.
Patent GB-753564-A (GB)
Title: Process for extracting impurities from waste acetic acid in the manufacture of acetyl-celluloses
IPC: C07C51/48
Filed: 1952-04-10
Abstract: Impurities are removed from waste dilute acetic acid produced in the manufacture of acetyl cellulose, by a process comprising treating the waste acid with an extraction agent consisting of ethyl acetate or a mixture of ethyl acetate with benzene or butyl acetate and which contains at least 12 per cent by weight of acetic acid.  The presence of the acetic agent in the extraction agent may be effected by adding a corresponding quantity of acetic acid or by using such a small quantity of extraction agent that the acetic acid is present in the required concentration.  In the examples: (a) waste aqueous acetic acid from the manufacture of acetyl-cellulose is mixed with a mixture of ethyl acetate and acetic acid and the mixture is then allowed to separate; the ethyl acetate contains the impurities and the acetic acid is obtained in a pure condition; and (b) waste acetic acid is mixed with a small amount of ethyl acetate or a mixture of ethyl acetate with butyl acetate which extracts the impurities.
Patent GB-1157600-A (GB)
Title: Improvements in Connectors for Connecting Hose Pipes to Water Supply Taps or the like.
Inventor: STIRLING DAVID LINSLEY
IPC: F16L47/04
Filed: 1968-02-27
Abstract: 1,157,600. Hose couplings. SMITH & DAVIS Ltd. 27 Feb., 1968, No. 9332/68. Addition to 1,117,943. Headings F2G and F2H. In the connector described in the parent Specification wherein a socket 12 has internal annular ribs which are deformed to form a fluidtight seal with the spout of a water tap by the radial contraction of fingers 25 integral with a body 10 and forming a housing for reception of the socket, the fingers being contracted by the frusto-conical seat 27 of a nut 11 screwed on to the body, the tubular stem 18 of the body is externally screw-threaded and may surround a spigot 19 which is shorter or longer than the stem; alternatively, the stem has an annular groove. An internally screwed component adapted to engage a further coupling component on a hose end is engaged on the stem, or a hose is fitted on to the spigot and clamped thereon by a nut screwed on to the stem. Where the stem has a groove a coupling attached to a hose comprises a sleeve carrying clutch elements and surrounded by a ring operated by a spring to urge the clutch elements into engagement with the groove. The nut has a screw-thread 26 of buttress formation and is moulded from an acrylonitrile-butadiene styrene copolymer or an acetal resin or nylon.
Patent GB-452933-A (GB)
Title: Improvements in aircraft landing lights
IPC: B64F1/20
Filed: 1935-03-26
Abstract: 452,933. Rotary beacon lights. GENERAL ELECTRIC CO., Ltd., DAMANT, E. L. B., and VILLIERS, W. A., Magnet House, Kingsway, London. March 26, 1935, No. 9384. [Class 75 (iv)] In an apparatus of the kind adapted to project a horizontal fan-shaped beam for floodlighting aircraft landing grounds, as shown at 3, Fig. 1, means are provided for tilting the beam, as shown for example at 5, about a horizontal axis inclined at an angle less than 90‹ to the longitudinal axis of the beam into a plane inclined to the horizontal so as to direct substantially more than 50 per cent of the beam above the horizontal axis, and for rotating the tilted beam continuously or intermittently about a vertical axis to act as a beacon. The beam may be tilted about one of its edges. As shown, a reflector 6 is tilted about the axis A-A by means of a shaft 11 having a worm 10 in mesh with a quadrant 9 on the supporting frame 7, the casing 2 being rotatable about a vertical axis. The reflector may be fixed to the casing and the latter tilted. Two or more reflectors or groups of reflectors, adapted to produce a fan-shaped floodlighting beam, may be tilted relatively to each other to provide a multi-flash beacon. Prisms or lenses may replace or be combined with the reflecting means.
Patent GB-309721-A (GB)
Title: Improvements in and relating to safety electric lamps
IPC: F21L4/00
Filed: 1928-03-28
Abstract: 309,721. Ceag, Ltd., and Plummer, R. J. March 28, 1928. Battery lamps; cut-out arrangements. - A safety lamp for use in explosive atmospheres comprises a battery casing 1 having a rocking head 7 for switching purposes and means for locking this -against unauthorized removal, the parts being arranged so that the battery can be removed without disconnecting the bulb 11 and its associated parts. In the construction shown the bulb and the reflector 22 are mounted in a casing 12 arranged on the side of the lamp, the centre contact of the bulb being connected to one battery terminal through insulated metal strips 25 &c. and rivets 17 and a resilient contact 15 adapted to be engaged by a contact 6a attached to one of the plate contacts 6 in the rocking head 7. A cover 24 prevents exposure of the conductors. A cut-out is provided which operates upon breakage of the bulb 11 or of the glass 13. In the construction shown in Fig. 1, a spring 30 holds the bulb in engagement with the resilient contact 25 which, if the glass or the bulb be broken, projects the bulb from its seat in the reflector with which it contacts to short-circuit the battery and blow a fuse. In the construction shown in Fig. 2, the bulb is held in its seat by a frame 31 pivoted at 32 to the " earthed " casing 12 and controlled by a spring 35. If the bulb 11 breaks, the frame is rocked and an arm 36 engages the contact 25 to short-circuit the battery.
Patent GB-273816-A (GB)
Title: Improvements in or relating to wringing and mangling machines and the like
IPC: D06F45/00
Filed: 1926-04-10
Abstract: 273,816. Webster, B. April 10, 1926. Folding mangles and wringers, boards and pressure arrangements for.-A wringing or like machine is provided with a balanced pivotal frame carrying rollers driven through intermediate gearing from a driving spindle carried by a stationary part of the machine, the frame being capable of being moved about its axis and locked in a desired plane. In the construction shown in Figs. 1 and 3, standards 1, 2 are provided, respectively, with bosses 6, 7, the boss 6 having a block 8 with an eccentric bore 9 to receive the reduced end 10 of a spindle 11, and the boss 7 carrying a hollow spindle 12 through which passes a shaft 13 screw-threaded at one end to engage an internal thread on the spindle 11. On each of the spindles 11, 12 is loosely mounted a block 14 carrying two tubes 16 which support or guide the bearings for rollers 19, 22. The inner rollers 19 are carried in fixed bearings 17. Slidable bearings 20 for the rollers 22 are provided with perforated end portions 23 fitting in the tubes 16 which are slotted longitudinally at their ends. Each tube 16 carries bolts 29 which pass through the portions 23 of the bearings and are connected at their inner ends to a spring 30, their outer ends engaging cross pieces 28 which are provided with screws 27 adapted to engage the bearings 20. The means for exerting pressure on the rollers may be modified so that springs press directly on extensions of the bearings for the outer rollers. The end 10 of the spindle 11 is provided with gear wheels 31, 32, for engagement, respectively, with a pinion 33 connected to a handle 36, and a pinion 38 on the trunnion 18 of the upper roller 19. A spur wheel 39<a> also fixed on the trunnion 18 meshes with a wheel 40 on the trunnion 21 of the upper outer roller 22. The rollers below the shaft 13 have similar pinions, but owing to the eccentric mounting of the pinions 31, 32 only the upper set of rollers is in gear with the driving means. The rollers instead of being driven by hand may be driven by power imparted to the spindle 34. When in a horizontal plane, as shown in Fig. 3, the frame is adapted to receive a table 58 provided with battens 59 for engaging the standards 1, 2 and with clips 61 for engaging extensions 53 on the bearings 17. Each extension is provided with two slots whereby feed and delivery boards may be held detachably in a horizontal position whether the roller frame is vertical or horizontal. The draining board is detachably secured to the shaft 13. In the construction shown in Fig. 5, only one pair of rollers are employed which are balanced by a bar 63 mounted at each end in a block 64 fixed between the two tubes 16. The frame is locked in a vertical position by means of a eliding plate 67 with a forked end 68 for engaging a tie-rod 4. The tubes 16, blocks 14, bearings 17, and extensions 53 may be replaced by a single casting.
Patent GB-1041712-A (GB)
Title: Apparatus for forming tiles
Inventor: FRANCHI ANTONIO GEORG
IPC: B29C33/00
Filed: 1963-03-11
Abstract: 1,041,712. Tile moulding apparatus. AMALGAMATED ASPHALTE CO's Ltd. March 11, 1964 [March 11, 1963], No. 9500/63. Heading B5A. In apparatus for moulding tiles mould cavities are defined between metal plates 4 spaced apart by resilient spacing means arranged along the side and bottom marginal portions of the plates. The spacing means may comprise a metal strip 5 secured to each plate 4 embraced by a neoprene rubber strip 6 or, Fig. 5 (not shown), a neoprene strip 8 fitted between metal strips 9 secured to the plate. A plurality of plates 4 are dispersed vertically and clamped together by hydraulic rams 2 acting on buttresses 1. To produce tiles composed of synthetic resin and marble chips, the resin is introduced into the mould cavities from a trough 31 and marble chips from a trough mounted within a easing 14 sealingly located over a group of moulds. A vacuum may be applied to the casing 14 and the moulds may be vibrated by vibrators connected to bed 3. After filling heated air is circulated within a hood 27. Apparatus may be provided to convey the plates 4 to and from the bed 3.
Patent GB-825817-A (GB)
Title: Improvements in or relating to the process of fabrication of a spectacle side provided with a hinge element and a spectacle side obtained by said process
IPC: B29D12/02
Filed: 1958-03-25
Abstract: 825,817. Spectacles. NATIONALE S. A. March 25, 1958 [March 30, 1957], No. 9519/58. Class 97(1) A spectacle side arm comprises a metallic part secured in a synthetic resin skin and having a hinged element secured thereto by deforming said element or said part. In one form, a metal rod 2 is press fitted within a metallic sleeve 1 and then heated before being forced through a tube of synthetic resin 3 so that the rod 2 acts as a reinforcement. Thereafter the sleeve 1 is deformed at one end so as to form a force fit in a non-circular recess of a hinge element 5, in the interior of which is a slidable member 9 carrying a roller 10, this member being pressed outwardly by an internal spring 7. The hinge element 5 is pivoted at 13 to another hinge element 11 riveted at 12 to the spectacle front, this hinge element 11 having a cam surface against which the roller 10 is spring- pressed, and serving to hold the spectacle side in its " open or its " closed positions. In another form, Fig. 6, metallic part 14 is introduced into a synthetic resin tube 3, and has grooves therein which aid in the retention of the part in the tube 3. The projecting end 15 of the part 14 is deformed so that it is gripped within a recess of hinge element 5. A third form is described, in which a reinforcing metallic element has folded over edges at one end, as at 20, Fig. 8, so as to grip the hinge element 5.