baber/WOPTO huggingface dataset:
Patent GB-386950-A (GB)
Title: Improvements in electrolytic condensers
IPC: H01G9/00
Filed: 1931-04-20
Abstract: 386,950. Electrolytic condensers. DUBILIER CONDENSER CO. (1925), Ltd., Victoria Road, North Acton, London.- (Assignees of Edenburg, L. ; 3804, Bailey Avenue, Bronx, New York, U.S.A.) April 20, 1931, No. 11656. Convention date, April 19, 1930. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. [Class 37.] The forming of electrolytic condensers is effected by connecting them in parallel across a D.C. supply. For A.C. or D.C. operation they are then connected in opposed series. Two condensers so formed may be connected as stated and combined in a single container which may be left empty or filled with wax. In a modification a condenser unit is formed of four strips of aluminium interleaved with fibrous material, alternate strips having terminal tabs brought out to the same side of the strips which are then rolled, and impregnated, and formed by connecting tabs on one side to a + D.C. supply terminal and those on the other side to the other supply terminal. In operation, the tabs on one side are connected together and the others form the terminals of the condenser unit. Condensers connected as above are used for smoothing rectified currents in an A.C. rectifier system.
Patent GB-610890-A (GB)
Title: Diamond indenter for testing the hardness of metals
IPC: G01N3/42
Filed: 1946-04-17
Abstract: 610,890. Testing hardness of materials. FROMHOLT, F. April 17, 1946, No. 11893. Convention date, June 1, 1945. [Class 106 (ii)] A diamond indenter for testing the hardness of metals comprises a diamond cut to a regular pyramid I truncated in a flat surface L. Integral with this pyramid is formed a second polyhedral pyramid K with a larger apex angle. The number of sides of the pyramids may be great enough to produce a substantially conical surface.
Patent GB-1478691-A (GB)
Title: Moisture resistant material
IPC: E04C2/26
Filed: 1974-03-18
Abstract: 1478691 Roof covering BPB INDUSTRIES Ltd 21 March 1975 [21 March 1974 2 May 1974] 11983/74 and 19410/74 Heading E1W A moisture resistant material suitable for use in roofing or as a damp course or waterproofing sheet comprises a layer of iron foil which has been coated to render it corrosion resistant and bonded to the foil a layer of woven reinforcing material. The iron foil is preferably produced by electrodeposition as described in Specification 1341229 and is rendered corrosion resistant by coating with electroplated zinc, copper, nickel or tin or with a plastics skin of an acrylic or polyester resin. The woven material may be a scrim of hessian, cotton, glass or a plastics such as ethylene or propylene polymer, nylon or polyethylene terephthalate. The moisture resistant material may be bonded to a roof decking by a hot applied adhesive, a cold applied adhesive or an adhesive tape or it may be laid loose or it may be laid loose and followed by heat insulation material such as phenolic foam, cork or a urethane material laid loose over it and both simultaneously mechanically fastened to the roof deck, the overlap joints being sealed with hot bitumen or other adhesive prior to the fastening. The insulation is protected by weatherproofing layers provided by additional layers of the coated reinforced foil material or by conventional bitumen felts, plastic or synthetic rubber sheets, or mastic asphalt. The foil if used to provide the roof top surface can be white or bright zinc coated.
Patent GB-637944-A (GB)
Title: Improvements in carrier bogies
IPC: C21D9/00
Filed: 1948-05-03
Abstract: 637,944. Metal-heating furnaces. UNITED STEEL COS., Ltd., WILSON, W. T., and LLOYD, T. P. May 3, 1948, No. 12105. [Class 51 (ii)] A carrier bogie on which ingots are transported through the tunnel of a reheating furnace comprises metal bearer bars f which rest on the bogie table a, with or without the interposition of a layer of insulation, and are a loose fit in slots defined by pairs of metal brackets or cleats g welded to the table. The edge members b of the bogie are lined with refractory brickwork h which is slotted to receive the ends of the bars, the space within the brickwork being filled with sand j or other powdered refractory which may be run out when necessary through an opening closed by a cap k.
Patent GB-109088-A (GB)
Title: Improvements in and connected with Hoists for Charging Blast Furnaces and the like.
IPC: C21B7/18
Filed: 1916-08-29
Abstract: 109,088. Wrightson, T. G., Riagquist, J. M., and Head, Wrightson, & Co. Aug. 29, 1916. Hoists with guided skips.- In blast-furnace charging apparatus, the skip E is suspended by a rope L from a carriage D running on inclined rails A<1> and consisting of two cross-heads J, J<1> connected by toggle-levers K, K<1>. The rope L and the hoisting-rope F are connected to the lower cross-head J<1>. The cross-heads are normally kept apart by the engagement of the roller K<3> with the straight guide M; but when the roller. reaches the curved part M' of the guide at the top of the hoist, the weight of the skip causes the cross-heads to approach each other, and the skip is consequently lowered. In a modification, two sets of toggle-levers are provided.
Patent GB-1457586-A (GB)
Title: Integrated circuits
IPC: H01L27/07
Filed: 1974-03-20
Abstract: 1457586 Integrated circuit resistors TEXAS INSTRUMENTS Ltd 20 March 1974 12299/74 Heading H1K An integrated circuit includes a resistor comprising a first region 3 of semiconductor material of a first conductivity type in a second region 2 of a second type on a substrate 1 of the first type, a first terminal 15 for connection to a voltage of one polarity (the substrate 1 being connected to the opposite polarity) and in which parasitic transistor action is prevented and protection against incorrect polarity connection is afforded by a connection between the second region 2 and the terminal 15 through a further resistor region of the first type within the second region. As shown, the two resistor regions are contiguous to the left and right of the terminal 15, although they may be formed as separate regions within the region 2. One end of the resistor is connected by metallization 9 to the collector of an NPN transistor 21, 19, 17 and one end of the protective resistor region is shorted by metallization 8 to the region 2. During normal operation the region 2 and substrate 1 form a reverse biased PN junction and the right hand part of region 3 passes no current. If the power supply polarity is incorrectly connected this PN junction conducts but the current is limited by the resistance of the region 3 between terminals 8, 15 which is chosen to keep heating low enough to prevent damage.
Patent GB-1414526-A (GB)
Title: Cementing inner nozzle
IPC: B22D41/56
Filed: 1973-03-14
Abstract: 1414526 Injection moulding FLOGATES Ltd 25 Feb 1974 [14 March 1973] 12365/73 Heading B5A An inner nozzle 32 is fixed in position in the well area 31 of a bottom pour ladle by supporting the nozzle in the well area and injecting refractory cement into an annular space 40 surrounding the nozzle 32, the ends of the annular space being closed. The nozzle 32 is supported on a flange 15 on a tubular member 10, which flange closes the lower end of the space 40 during injection. The upper end of the space 40 is closed by a frusto-conical flange 20 on an end plate 11. The parts are held in position by a collar 26 bearing on an end plate 12 and carried by a threaded portion of a rod 13 to which the plate 11 is welded. The refractory cement is injected by a hand pump or by hydraulic or pneumatic pressure through a hole 16, uniform distrubtion of the cement being assisted if desired by using a tommy bar 29 to rotate the rod 13, tube 10 and nozzle 32.
Patent GB-673818-A (GB)
Title: Method and apparatus for forming integral fins on plain tubing
IPC: B21C37/20
Filed: 1948-05-05
Abstract: 673,818. Rolling; making finned tubing. CALUMET &-HECLA CONSOLIDATED COPPER CO. May 5, 1948 [Sept. 2, 1947], No. 12403/48. Classes 83 (ii) and 83 (iv). Apparatus for rolling a helical fin on a length of metal tubing 10 comprises means 15 for supporting at least one roll 14 having axially spaced annular portions 17-23, the portions having opposite sides of non-rectilinear curved contour such that the action of successive co-operating portions does not bend or axially displace the fin formed by preceding portions. Three rolls 12, 13, 14 are supported on swinging arms 16 with their axes crossing the axis of the mandrel 9, carrying the tubing 10, at an angle equal to the mean helix angle of the fin and with the point of crossed axes in the vicinity of the last portion or disc 23. The peripheral portions of the discs increase in width progressively from the first 17 to the last 23 by about 0.004 inch. The diameters of the discs also increase, the differential increase of the first few discs being greater than that of the remaining discs. Specifications 604,066 and 651,774 are referred to.
Patent GB-110561-A (GB)
Title: Improvements in Machines for the Manufacture of Cigarettes.
Inventor: VICTORERO AGUSTIN
IPC: A24C5/08
Filed: 1916-09-01
Abstract: 110,561. Victorero, A. Sept. 1, 1916. Cigarette-making machines.-In a cigarettemaking machine, a hand-turned fluted wheel 5 feeds tobacco from a hopper 1 on to a scale pan 8 which, when it tilts against the action of an adjustable weight 10, drops the charge into a pocket 34M of the rolling-apron 34, and this is operated in the usual manner to roll the charge in a paper 35 by means of rollers 22, 23 on a carriage 17 reciprocated over the rolling-head D by means of bars 14 provided with a handle F. When the rollers reach the table, the apron is tightened by them and by a rocking arm 37 under the action of a spring 31, the arm being released by a trigger 29 actuated by a finger 24 on one of the bars 14. A roller 21 precedes the rollers 22, 23 to hold down the paper 35. The edges of the paper 35 overlap the charge of tobacco and are folded over the ends of the cigarette by slots 38 and apertures H, Figs. 8 and 9, in brackets G in the carriage 17. The folded edges are pressed into the ends of the cigarettes by plungers 18 actuated by fixed cams 25. The finished cigarettes drop into a receptacle M.
Patent GB-1308677-A (GB)
Title: Process for reinforcing synthetic fibre textile materials in pieces  or in strips more particularly for covering floors ceilings or  walls
IPC: D04H1/48
Filed: 1970-03-16
Abstract: 1308677 Non-woven fabrics M BETTONI 16 March 1970 [31 March 1969 24 Sept 1969] 12483/70 Heading D1R Synthetic fibre textile material 5, 6 suitable for floor, ceiling or wall coverings is reinforced by introducing a plurality of heated needles 1 temporarily into the material to produce melting and fusing of the material of the fibres around the needles. The material may be woven or non-woven. The needles are mounted on a support 2 which may have projection 3 heated so that patterns are produced on the material 5, 6. Two super-imposed layers may be connected by the needles. Sections 8, 9 may be cut out of the pieces 5, 6 and interchanged so as to produce a patterned effect.
Patent GB-1107172-A (GB)
Title: Process for the manufacture of low-porosity burnt magnesia
IPC: C01F5/08
Filed: 1965-03-24
Abstract: Low-porosity dead-burnt magnesia is produced by heating (e.g at 120 DEG  C.) a magnesium hydroxide paste to reduce the moisture content to 0 to 23% by weight of the paste without appreciable decomposition of the magnesium hydroxide, shaping the paste, e.g. by pelleting or extrusion, before or after this heat treatment, under pressure into compact bodies and firing the resultant bodies in three stages (1) up to about 500 DEG  C. at a rate not exceeding 20 DEG  C. rise per minute, (2) from about 500 DEG  to about 1000 DEG  C. during which the bodies are maintained under conditions of minimum friction and minimum movement relative to one another, (3) conventional sintering (e.g. at a temperature of at least 1600 DEG  C.).  Prior to shaping, the paste may be mixed with a binder, e.g. magnesium chloride magnesium sulphate or alkali metal halides. Before extrusion magnesia may be mixed with the magnesium hydroxide in a proportion of up to 40% by weight of the mixture. Extrusion may be facilitated by the addition of lubricants to the paste, e.g. beeswax, sulphite waste liquor, tragacanth, gum arabic and cutting oils.
Patent GB-1217153-A (GB)
Title: Improvements in or relating to machine drives
Inventor: GRAY DEREK JOHN
IPC: H02K7/10
Filed: 1967-03-17
Abstract: 1,217,153. Variable-ratio gears. DUNLOP CO. Ltd. 13 March, 1968 [17 March, 1967], No. 12615/67, Heading F2D. A two-speed constant mesh gear has a slip clutch in each power path to give infinitely variable output speed. The clutches are energized simultaneously for braking. As shown the transmission is employed between a squirrel cage motor 1 and a drum 16 of a tyre building machine and has magnetic particle clutches 14, 7 in the direct drive path and a layshaft 9 of a step-down train respectively. For normal running the clutches are selectively fully energized to give one of the two ratios, but for other speeds of short duration, or to control the acceleration of the drum, a selected clutch is partially energized. For maximum braking both clutches are fully energized, or to obtain a predetermined deceleration from high speed the clutch 14 is fully energized and clutch 7 partially energized, while for braking from low speeds clutch 7 is fully energized and clutch 14 partially energized. As shown gear pairs 3, 12 are provided between the lay shaft and the input and output shaft; if a reversing gear is required one gear pair is replaced by a belt drive. Electrostatic or eddy current clutches may be used instead of magnetic particle clutches.
Patent GB-240201-A (GB)
Title: Improvements relating to apparatus for cracking mineral oils
IPC: C10G9/20
Filed: 1924-05-22
Abstract: 240,201. Smith, T. A., Pitkethly, R., and Beale, E. S. L. May 22, 1924. Hydrocarbons, cracking.- In an oil-cracking still or other two-stage heating apparatus, the hot gases from the furnace are divided into two parts, one part being introduced into a system of flues in which the gases are circulated, to perform one heating operation, while the other part is diluted with the cooler gases displaced from the circuit and passed into other flues to effect the other heating operation. The invention is shown applied to an oil-cracking still of the kind comprising a praheater a, thermalizing tubes d and a reaction chamber c; the tubes d are bent as shown and enclosed in a flue e which is connected by an inclined flue e<1> and passage c<2> with the annular space c<1> surrounding the chamber c to form a heating-gas circuit into which fresh gases from the furnace k are introduced through a flue l fittsd with a thermostatically controlled damper l<1>. The introduction of fresh gases into the circuit displaces a corresponding amount of cooler gases which passes through a damper flue o and serves to temper the remainder of the furnace gases which, entering the flue n, pass downwardly through the apertures n<1>, preheater a and apertures p<1> to the flue p communicating with the stack q. A circulating fan is provided and this, in combination with doors in the setting, may be used for circulating air to cool the various flues to facilitate cleaning. Specification 220,664 is referred to.
Patent GB-109615-A (GB)
Title: Improvements in or relating to Dental Plates for Artificial Teeth.
Inventor: ANGEL ASMUS CHRISTENSEN SCHAU
IPC: A61C13/00
Filed: 1917-09-04
Abstract: 109,615. Angel, A. C. S. Sept. 15, 1916, [Convention date]. Teeth, artificial. - A denture a is formed with a suction cavity b fitted with a helical spring c to prevent the gum from being sucked into the cavity. Fig. 3 shows a spring of modified crosssection The springs may he removed for cleaning and are held in place by friction,
Patent GB-875198-A (GB)
Title: Improvements in or relating to ammunition for toy firearms
IPC: F42B8/06
Filed: 1959-04-15
Abstract: 875,198. Dummy ammunition. DIE CASTING MACHINE TOOLS Ltd., and MILLS, R. A. Feb. 25, 1960 [April 15, 1959], No. 12762/59. Class 9(1). Dummy ammunition for a toy pistol comprises a bullet portion 10 and a part 11 having a peripheral flange 12 to resemble a cartridge case The part 10, which is hollow, may be of metal or plastic material and has a rear end of reduced diameter received within the part 11. The part 11, which also may be of metal or plastic, has a recessed base to frictionally engage a percussion cap 15 placed therein. The bullet part 10 may be integral with the part 11. Specifications 834,743 and 837,078 are referred to.
Patent GB-972461-A (GB)
Title: Improvements in drawing compasses
Inventor: COOK FREDERICK CHARLES
IPC: B43L9/24
Filed: 1963-04-02
Abstract: 972,461. Drawing compasses. W. J. HARRIS (BIRMINGHAM) Ltd. Oct. 9, 1963 [April 2, 1963], No. 12919/63. Heading B6P. In the drawing-compass, Fig. 1, the holder 17 for the pencil is provided with a clamping nut 25, Fig. 3, situated between the leg 10 and the pencil 18. The holder, circular in crosssection, is threaded from a point adjacent the leg 90 to a point mid-way between inner wall 24 and the outer wall 28 of the pencil receiving hole 23. The nut 25 is prevented from being removed from the holder 17 since the diameter of the outer plain portion 17 is equal to the major diameter of the screw-threads. The socket 20 in the inner portion 21 of the holder which receives a spigot 22 formed on the leg 10 is of square or other angular cross-section to prevent relative rotation of the leg and the holder.
Patent GB-1005555-A (GB)
Title: Improvements relating to brake devices operated by pressure fluid
IPC: B60T17/08
Filed: 1964-03-26
Abstract: 1,005,555. Brake cylinders. DAIMLERBENZ A.G. March 26, 1964 [April 6, 1963], No. 12999/64. Heading F2F. A brake device has a resilient partition 3 of the rolling-bellows type bounding or dividing the space 14, 21 for the pressure medium which supports a piston 4 in a wheel-brake cylinder 1, 2. The cylindrical part of the piston 4 is housed, when at rest, inside the part 1 which widens slightly in conical fashion towards the direction of outward movement of the piston and which has a depression at 16 for the pressure medium entering at 15. The piston rod 5 is pivoted to the cam lever 7 actuating brake shoes 20. The entry position of the rod 5 into the cylinder 2 is protected by a pleated bellows 12 perforated at 22 to allow air to enter when the spring 9 returns the piston to its starting position, as in Fig. 1. The effective area of the rolling-type bellows normally remains constant throughout the stroke, but this characteristic can be varied in the present construction by widening or narrowing the cylindrical part of the outer housing 2, as shown dotted at 2<SP>1</SP> or 2<SP>11</SP>.
Patent GB-1186542-A (GB)
Title: Method for the Continuous Measurement of the Emissivity of a Heat Radiating Surface, and Method for Measuring the Temperature of such a Surface Using said First-Mentioned Method, and a Device for Implementing these Measurements
Inventor: HAAS ANDRAS
IPC: G01J5/62
Filed: 1967-03-20
Abstract: 1,186,542. Emissivity and temperature measurement. MRSTECHNIKAI KÍZPONTI KUTATË LABORAT6RIUM. March 20, 1967, No. 13029/67. Heading G1A. The emissivity and the temperature of the surface of a heated body are determined by an arrangement in which energy from the surface passes to a sensing element alternately directly and through a partially transmitting partially reflecting material which allows the passage of multiple reflection, the signals due to the alternate incidences being separated and brought into phase and their quotient being determined to indicate emissivity, the quotient of total directly received energy and this emissivity then being used to determine temperature. In order to eliminate the effect of radiation from the inside of the sensor housing, the incident radiation is chopped at a high frequency and a capacitor is included in series with the sensor. A disc situated between the surface and the sensor and comprising two semi-circles one transparent and the other semi-transparent and semi-reflective, is rotated to produce the two signals and they are separated by a synchronously driven switch. In a modification a pyrometer is inclined at an angle α to the surface under test, and a rotating disc the plane of which is set at an angle normal to -α alternately reflects and absorbs energy transmitted in that direction so that the pyrometer receives alternately direct radiation, and direct radiation plus that reflected by the disc: a mathematical analysis is included.
Patent GB-1020355-A (GB)
Title: Improved polymeric water gelling agent and process for the manufacture thereof
IPC: C08F8/00
Filed: 1964-03-31
Abstract: A process for the manufacture of gelling agents for aqueous solutions, which are partially hydrolysed acrylamide polymers, comprises hydrolysing an interpolymerized mixture of acrylamide and a cross-linking agent containing two or more polymerizable ethylenic groups in an aqueous medium containing an alkali metal hydroxide in such proportion as to provide the desired degree of hydrolysis. Preferred cross-linking agents are N,N1-alkylidene-bis-acryl-amides, e.g. N,N1-methylene-bis-acrylamide, ethylene glycol diacrylate and dimethacrylate, propylene glycol diacrylate, divinylbenzenesulphonates, allyl acrylate, ethylene glycol dially ether, diallyl ether, divinyl ether, divinyl ether of ethylene, diethylene or triethylene glycol and mixtures thereof. Preferably, the hydrolysing agent is sodium or potassium hydroxide or a mixture thereof.  The hydrolysis is generally effected at elevated temperature.  The initial polymers for hydrolysing may be obtained by heating the acrylamide and cross-linking agent in water in the presence of a water-dispersible, free radical catalyst.  Suitable catalysts include sodium, potassium and amonium persulphates, caprylyl peroxide, benzoyl peroxide, hydrogen peroxide, pelargonyl peroxide, cumene hydroperoxide, di-t-butyl diperphthalate, t-butyl perbenzoate, sodium peracetate, sodium percarbonate and azodiisobutyronitrile; Redox systems may also be used.  The examples illustrate the preparation and gel properties of partially hydrolysed acrylamide/N,N1-methylene -bis-acrylamide interpolymers. In Example 1, a comparison terpolymer was prepared by copolymerizing in water a mixture of acrylamide, acrylic acid (neutralized with NaOH) and N,N1-methylene-bis-acrylamide in the presence of an ammonium persulphate/betadimethylaminopropionitrile Redox catalyst.  In Example 3, an acrylic acid/N,N1-methylene-bis-acrylamide copolymer neutralized with KOH is used as a comparison polymer.
Patent GB-1005216-A (GB)
Title: Pressure sensitive apparatus
IPC: G01L9/00
Filed: 1962-04-05
Abstract: 1,005,216. Measuring electrically. WESTERN ELECTRIC CO. Ltd. April 5,1962 [April 24, 1961], No. 13105/62. Heading G1N. [Also in Division H1] A pressure transducer comprises a pressuresensitive device having a P-N junction, such as tunnel diode 30, Fig. 3, in parallel with a resistor 33, which may be variable, the I/V characteristic of the transducer having an operative portion approximately parallel to the voltage axis, as shown in Fig. 1 in which curves I and II relate to the unloaded and loaded states of the transducer respectively. The transducer is supplied with a constant current I b , the voltage V B  - V A  being representative of the pressure loading. The range of response is varied by adjustment of a rheostat 32. In a modification, the shunt resistor 33 is replaced by a series resistor to produce the I/V characteristic of Fig. 2; in this mode of operation, the transducer is supplied with a constant voltage, the variation of current under load being noted. In either case, the shunt or series resistor has a value of at least 50% of the "negative resistance" value of the diode; preferably these values are the same within 10%. The tunnel diode may comprise Si, GaAs, or GaP; the use of backward diodes is mentioned.