baber/WOPTO huggingface dataset:
Patent GB-492315-A (GB)
Title: Improved manufacture of spark plugs
IPC: H01T13/46
Filed: 1937-03-19
Abstract: 492,315. Sparking-plugs. AC-SPHINX SPARKING PLUG CO., Ltd., and CORBIN, D. H. March 19, 1937, No. 8127. [Class 7 (iv)] Fine wire sparking-terminals i are positioned in the end of a refractory insulator, their inner ends being in fused contact with the metal in the central bore. Platinum, an alloy of platinum with rhodium or indium, or nickelchrome alloy is used for the terminals. Either molten silver is run into the central bore or solid silver inserted and subsequently fused. Except at their inner ends, the terminals are coated with chromium, and heated to a redheat. The terminals may be ir the form of wires, of a cap crimped over the insulator, of a star with a dome entering the central bore or of a cup fitting within the bore The insulation consists of a sintered, highly refractory oxide
Patent GB-849376-A (GB)
Title: New disazo pigments
Inventor: MITCHELL JOHN
IPC: C09B35/28
Filed: 1958-03-14
Abstract: Diamines of formula NH2-X-NHCO-Y-CONH-X-NH2, wherein X is a substituted or unsubstituted benzene ring having the-CONH-and-NH2-groups in the meta-or para-positions and Y is an arylene radical optionally substituted by halogen, are prepared by reacting a functional derivative (e.g. anhydride, ester or acid chloride) of an aryl dicarboxylic acid with a m-or p-nitroaniline and reducing the nitro groups to amino groups. They are used as components in the preparation of disazo pigments (see Group IV(c) ). In an example a mixture of 2-chloro-4-nitroaniline, terephthaloyl chloride and toluene is refluxed and the precipitated N: N1-di(21-chloro-41-nitrophenyl)-terephthalamide is filtered off and reduced with iron and hydrochloric acid in ethanol to N : N1-di (21-chloro-41-aminophenyl)-terephthalamide.  Diamines specified include N : N1-di (21-methoxy51-aminophenyl) isophthalamide, N : N1-di (21-methyl-41-aminophenyl) terephthalamide, 2 : 5-dichloro - N : N1 - di (21 - methoxy - 51 - amino - phenyl) - terephthalamide and N : N1 - di (21 - methoxy-51-aminophenyl)-naphthalamide.ALSO:The invention comprises disazo pigments of formula:  <FORM:0849376/IV (c)/1> wherein R is an alkyl or aryl radical, Ar is an aryl radical, X is a substituted or unsubstituted benzene ring wherein the -CONH- and -N=N-groups are in the meta- or parapositions to each other and Y is an arylene radical optionally substituted by halogen.  They are prepared by coupling 2 moles of an amide of formula R.COCH2 CONHAr with 1 mole of a tetrazorised diamine of formula H2N-X-NHCO-Y-CONH-X-NH2.  Alternatively they may be prepared by reacting 1 mole of a functional derivative (e.g. anhydride, ester or acid halide) of an aryl dicarboxylic acid with 2 moles of an aminoazo compound of formula:  <FORM:0849376/IV (c)/2> The pigments are used to colour rubber, synthetic polymers and paints in yellow shades.  In an example N : N1-di(21-chloro -41- aminophenyl)- terephthalamide is tetrazotised and coupled with acetoacet -mxylidide.  Further components specified include N : N1 -di(21-methoxy -51- aminophenyl)-isophthalamide, 2-chloro- or 2 : 5-dichloro-N : N1-di(21-chloro41- aminophenyl)-terephthalamide and N : N1-di(21-methoxy-51-aminophenyl)-naphthalamide; acetoacet(4-chloro -2 : 5- dimethoxy) anilide, benzoylacetanilide and acetoacet-alpha-naphthylamide.
Patent GB-886617-A (GB)
Title: Steam power plants
IPC: F01K7/22
Filed: 1959-03-10
Abstract: 886,617. Once-through steam generators. SULZER FRERES S. A. March 10, 1959 [March 11, 1958], No. 8235/59. Class 123(2) In a steam power plant comprising a forcedflow, once-through steam generator 1 and a two-stage steam turbine 2 the steam generator, having separately-fired furnaces 6, 7 arid associated flues 8, 9 which accommodate respectively steam generating sections 15, 16 and steam presuperheating sections 17, 18 which both lead to a final superheater 20 housed in the flue 9, a regulator device 30 interrupts the flow of steam from the steam generating section 15 to the presuperheating section 17 when the liquid content of the steam exceeds a permissible amount. Liquid separators 21, 22, interposed between the steam generating sections 15, 16 and the respective presuperheating sections 17, 18, have liquid discharge valves 25, 26 which are automatically adjusted by impulse transmitters 27, 28 in accordance with the depth of liquid in the separators 21, 22, the regulator device 30 being adjusted according to the depth of liquid in the separator 27 since, in practice, this depth gives a sufficiently accurate measurement of the liquid content of the steam. A reheater section 29 is housed in the flue 8 and on starting the installation from a cold state only a burner 11 for the furnace 7 is ignited water from a feed tank 4 being supplied through a valve 32 to the tube sections housed in the furnace and flue 7, 9. When the power unit has been de-watered and progressively warmed up toward its operating temperature a burner 10 for the furnace 6 is ignited and a valve 31 is adjusted to supply water to the steam generating tubes 15 the regulator device 30 ensuring that the presuperheating section 17 receives only as much liquid as can be completely vapourized. The regulator device 30 could be influenced by a meter which measures the wetness of the steam intended for the final superheater 20 on the device could be elastically suspended for adjustment according to the weight of the separator. In apparatus for adjusting the regulator device in dependence on the moisture content of the steam the difference between the amount of water fed in and the amount of steam downstream of the device 30<SP>1</SP>, measured respectively by restrictors 80, 50, is transmitted to a three-dimensional cam 63 which is also influenced by the fluid pressure in a line 66 connected to the output of the steam generating section 15 and which operates a control valve 69. The latter is also influenced by the amount of water which is separated out in the separator 21 and measured by a restrictor 72 in a discharge line 23. The valve 69 controls a servomoter 74 which regulates the device 30<SP>1</SP>. The flues 8, 9 lead to a common chimney 9 which may contain e.g. feed-water preheaters.
Patent GB-453779-A (GB)
Title: Improvements in or relating to electric cables insulated with magnesia
IPC: H01B7/16
Filed: 1935-03-16
Abstract: 453,779. Cables. CONDUCTEUR ELECTRIQUE BLINDE INCOMBUSTIBLE, 54, Avenue Marceau, Paris. March 16, 1935, No. 8264. Convention date, March 20, 1934. Drawings to Specification. [Class 36] In manufacturing electric cables insulated with powdered magnesia formed in situ by oxidizing magnesium wires, the magnesium wires are braided around a central conductor and then oxidized in situ to form the magnesia insulation, the whole being subsequently enclosed in a fluid-tight sheathing. For a multicore concentric cable magnesium wires and conducting wires are successively loosely braided around a central conductor in alternate layers, and a braiding of textile material is disposed around the outermost magnesium braiding, steam then being caused to penetrate through the braidings to convert the magnesium into magnesium hydroxide which is transformed by heat into magnesia, the whole being subsequently enclosed in a fluid-tight sheathing, for example of copper. Alternatively, one or more of the magnesium wire braidings may be replaced by loose textile braidings, the arrangement being such that the magnesia when formed will expand and substantially fill the interstices in the textile and conducting braidings. The various braidings may be applied in a continuous manner in a multi-stage braiding machine. Specification 453,770 is referred to.
Patent GB-1186656-A (GB)
Title: Process for the Preparation of Saturated Glycidyl Ethers or Esters by Hydrogenation
IPC: C07D303/24
Filed: 1968-02-20
Abstract: 1,186,656. Saturated glycidyl ethers and esters. CIBA Ltd. 20 Feb., 1968 [28 Feb., 1967], No. 8277/68. Heading C2C. Saturated glycidyl esters and ethers are prepared by hydrogenation of olefinically or cycloolefinically unsaturated monoglyoidyl or polyglycidyl esters of aliphatic or cycloaliphatic monocarboxylic or polycarboxylic acids, or olefinically or cycloolefinically unsaturated monoglycidyl or polyglycidyl ethers of aliphatic or cycloaliphatic monoalcohols or polyalcohols, in the presence of a hydrogenation catalyst, preferably one based on nickel, platinum or palladium. Examples are given of the hydrogenation of #<SP>4</SP>-tetrahydrophthalic acid diglycidyl ester; linolic acid glycidyl ester; 3,6- endomethylene - #<SP>4</SP>   - cyclohexene - 1,2 - dicarboxylic acid diglycidyl ester; #<SP>3</SP>-cyclohexene - 1,1 - dimethanol diglycidyl ether; #<SP>4</SP> - butene - 1,4 - diol - diglycidyl ether. Other possible starting materials are mentioned.
Patent GB-324568-A (GB)
Title: Name or number plate with interchangeable letters or figures
IPC: G09F7/02
Filed: 1929-03-14
Abstract: 324,568. Beck, O. E. March 14, 1929. Name and number plates.-A name or like plate comprises a base 1 in the form of a pressing having one or more apertures 3 in which are interchangeably and independently mounted flanged, dished plates 8 bearing characters 7, which may be formed in relief. The plates project through the apertures in the plate 1 and are held in position by a back plate 11, which may be attached by lugs 13, and which is provided with clearances 12 to permit of the passage of fixing screws.
Patent GB-411413-A (GB)
Title: Improvement in hydraulic presses
IPC: B30B1/32
Filed: 1934-03-16
Abstract: 411,413. Hydraulic presses. EATON, M. M., 18, Brearley Street, Birmingham. March 16, 1934, No. 8285. [Class 69 (ii).] A hydraulic press comprises two spaced side plates, one or each of which has one or more gaps or apertures with platens or tool-holders fixed adjacent an end or ends of the gaps, a cylinder or cylinders between the side plates, and movable rams guided by the side plates. In a double-acting form, the side plates 2, Fig. 1, have gaps 9, 9<a> and support platens 11, 11<a>, and the rams 14, 14<a> are connected by members 15 and carry platens 17, 17<a> ; the cylinders 1, 1<a> have flat front and back faces fitting against the side plates, and projections 7 engaging notches 8. In a modified double-acting form, each side plate has a single gap supporting fixed platens at its top and bottom, and the side members of the ram frame are connected by a cross-bar with platens on its upper and lower faces. A single-acting press is shown in Fig. 8, the ram 14 having deep end parts 15 and guide plates 20. Doors may be fitted to the gaps in the side plates.
Patent GB-1518638-A (GB)
Title: Polymeric orthoesters
IPC: C08G65/00
Filed: 1977-02-28
Abstract: 1518638 Polymeric orthoesters ALZA CORP 28 Feb 1977 [8 April 1976] 8424/77 Heading C3R A polymeric orthoester of the formula,:- in which R1 is hydrogen or hydrocarbyl, R2 is a hydrocarbyl radical, a is 2 or 3 and n is from 10 to 100,000, is prepared by polymerizing a monomer of the formula:- in which R3 is a hydrocarbyl radical, the monomer being derived from a polyol of the formula:- and an orthoester of the formula:- Various Examples are given, e.g. reacting 1,2,3-propane-triol with triethyl orthoformate.
Patent GB-680793-A (GB)
Title: Improvements in or relating to electric accumulators
IPC: H01M50/489
Filed: 1947-03-28
Abstract: 680,793. Batteries. YARDNEY INTERNATIONAL CORPORATION. March 28, 1947 [April 11, 1946], No. 8537/47. Class 53. An accumulator consists of zinc and silver electrodes in an alkaline electrolyte saturated with zinc. Fig. 2 shows a cell comprising silver and zinc electrodes 1, 2 separated by diaphragms 3, the zinc electrodes being connected to a metal band 6 carrying a wire 7 forming the negative terminal. Each positive electrode 1 may be surrounded by a plastic frame 11 which compresses the peripheries of adjacent diaphragms, the connecting wire 5 of the electrode passing along a groove in the frame. The complete block of electrodes and separators may be held in a brass frame 15 which may serve as a connection to the zinc electrodes. When the accumulator is put into service the diaphragms 3 swell by absorption of electrolyte and are thus maintained under pressure. Owing to the saturation of the electrolyte with zinc the negative electrode remains insoluble, being converted into zinc oxide when the accumulator is discharged.
Patent GB-577403-A (GB)
Title: Improvements relating to machines for testing the lead of the teeth of helical spur gear wheels
IPC: G01B11/24
Filed: 1944-05-05
Abstract: 577,403. Gauging toothed gears. GEAR GRINDING CO., Ltd., and ORCUTT, A. H. May 5, 1944, No. 8541. [Class 106 (ii)] Means for determining the accuracy of a machine for testing the lead of helical spur gear-wheels-for example, the machine described in Specification 550,063-comprises an accurately formed cylindrical body f adapted to be rotatably mounted in the machine and having on its surface a system of conveniently spaced fine lines h parallel with the axis of the body, a scale i or k for measuring movement of the slide e of the machine, and optical viewing means m and n adapted to be mounted on the slide. In one embodiment, two microscopes m and n are carried by the slide e and rotation of the cylinder f is observed through the microscope m while the corresponding movement of the slide is observed through the microscope n against a fixed scale k. In a second embodiment only one microscope m is used and additional graduations i are marked on the cylinder f.
Patent GB-126178-A (GB)
Title: Shooting Apparatus combined with Coin-freed Machines having Revolving Index or Indicator Discs.
Inventor: FUSCO ARCANGELO
IPC: G07F17/38
Filed: 1918-05-23
Abstract: 126,178. Fusco, A. May 23, 1918. Mechanical shooting galleries and the like.- Shooting-apparatus comprising a dummy or mechanical pistol is combined with coin-freed apparatus such as that known as the " roulette or commercial type " in which a revolving indicatordisk is employed, a rod projected by the pistol being adapted to register with one of a number of holes in the disk. The dummy pistol 2 is secured by a bracket 4 to the front of a coin-freed apparatus 1 and the barrel 12, which contains a shooting-rod 7, projects through the glass frout 22 of the apparatus so as to allow the roller-carrying end 20 of the rod 7 to engage one of a number of holes 8 in the disk 10 when projected by the impact of the hammer 20<1> on a rearwardly-extending firing-pin 25. Rotation of the rod is prevented by a pin 13 engaging a slot 14 and the rod is controlled by a spring 15. The apparatus is set in motion after insertion of a coin by operating the handle 32 and operates independently of the shooting-apparatus.
Patent GB-740046-A (GB)
Title: Improvements in and relating to smokers' ash trays
IPC: A24F19/00
Filed: 1954-03-24
Abstract: 740,046. Ash receptacles. PUCKERT, E. W. March 24, 1954, No. 8640/54. Class 130. A smokers' ash-receptacle has a cover pleat 3 arcuate and a sliding fit on a cylindrical part 1 with a peripheral ashreceiving opening, the sliding action of the plate 3 being controlled by a spring 20 arranged within the receptacle 1 and by which the plate 3 is retained thereto. As shown, the spring 20 has an over-centre action, being connected to the plate 3 via a U-shaped arm 23 and so arranged that the spring lies on one or other side of a diametrical position according to whether the plate 3 on sliding round the part 2 covers or uncovers the ash-receiving opening. A suction device S for securing the receptacle 1 as to a motor vehicle windscreen or dashboard is detachable from the receptacle via bayonet lugs 32 and slots 31 and comprises a resilient diaphragm adjustable by a screw 29.
Patent GB-1358146-A (GB)
Title: Method and a composition for reducing the rusting of articles  of iron steel or ferrous alloys
IPC: C23F11/18
Filed: 1972-02-24
Abstract: 1358146 Modifying ferrous surfaces AMINKEMI A B 24 Feb 1972 [9 March 1971] 8693/72 Heading C7U Iron and steel surfaces are contacted with a solution of e.g. 0À1 to 1À0% of lithium hydroxide in an organic solvent, e.g. an alcohol, ketone, amide, sulphone or sulphoxide, nitrite, glycolethers, nitro compounds, and amines. The solution may also contain a wetting agent, e.g. alkyl aryl sulphonate or a thickening agent e.g. colloidal solicic acid. The surfaces may be subsequently painted with red lead.
Patent GB-663793-A (GB)
Title: Improvements in or relating to record changing mechanisms for magazine gramophones
Inventor: COSTA HARRY DA
IPC: G11B17/02
Filed: 1949-03-31
Abstract: 663,793. Magazine gramophones. PLESSEY CO., Ltd. March 16, 1950. [March 31, 1949; Nov. 15, 1949] Nos. 8770/49 and 29214/49. Class 40 (ii). A record changer of the kind in which a stack of records to be played are wholly supported upon a gramophone spindle, and a stabilizing arm is adapted to rest upon the uppermost record of the stack, is characterised in that the stabilizing arm is fixed on a spindle having a bearing in a fixed pillar, and when the arm is free to fall after the last record has been released, mechanical means impart a rotary movement to the spindle to move the stabilizing arm outwardly from the records. The stabilizing arm 1 is fixed on a spindle 2 having a bearing in a pillar 8 and biassed downwardly by a spring 6. When the records (not shown) are stacked ready for playing, the spindle and arm are raised by a knob 3 and the arm is rotated into the broken line position where it rests on the stack of records. When the last record drops the arm and spindle fall, and the wedge shaped end 5 of the spindle engages corners 13, 14 of a gate in a plate 12 which causes the spindle to turn and move arm 1 outwardly from the records. The rotation of the wedge 5 moves a slide 15 to the left to stop the machine after the last record has been played.
Patent GB-1263975-A (GB)
Title: Method and apparatus for blending liquid additive into a liquid stream
IPC: G05D11/13
Filed: 1969-02-18
Abstract: 1,263,975. Preserving liquids. JOS. SCHLITZ BREWING CO. 18 Feb., 1969 [20 Feb., 1968], No. 8788/69. Heading A2D. [Also in Divisions Bl and B2] A method of blending a liquid sterilising agent with a perishable liquid, e.g. beer, fruit juices, soft drinks comprises subjecting liquid sterilising agent in tank 7 to the pressure of an inert gas so that it flows via line 3 to an injector unit 4 injecting the sterilising agent in an atomised form into the perishable liquid, and mechanically agitating the resulting mixture in a blender 5. The liquid sterilising agent may be diethyl pyrocarbonate or mixed anhydrides disclosed in Specifications 1,200,210 and 1,205,146.
Patent GB-808664-A (GB)
Title: Process for producing fertilizers
IPC: C05B21/00
Filed: 1956-03-21
Abstract: Phosphate fertilizers are made by mixing superphosphate which contains free acid and water, with calcium, sodium, or potassium metaphosphate, and tumbling the mixture to form nodules which are then pile cured, whereby the metaphosphate is hydrolysed to o-phosphate.  The acidity and water content of the product is substantially less than the superphosphate which may be normal or triple phosphate, cured or uncured.  In examples, green superphosphate is mixed with calcium metaphosphate ground to 8 to 35 mesh; a little water may be added during or after mixing.  The mixture is nodulized by passing it through an inclined rotary tumbler, preferably at 150 DEG  F., and then dried in a drum drier at 150-300 DEG  F.  Alternatively the low-temperature nodulizing step may form a shorter preliminary stage to drying at a higher temperature up to 800 DEG  F. for a few minutes.  The product is then pile cured.
Patent GB-1516832-A (GB)
Title: Security document system
IPC: G06K19/12
Filed: 1975-05-21
Abstract: 1516832 Credit cards and the like EMI Ltd 21 May 1975 [27 Feb 1974] 8831/74 Heading B6A [Also in Division G4] A security document has a coating 2 comprising magnetic and non-magnetic materials disposed in correlated patterns, e.g. a magnetic accicular γ Fe 2 O 3  layer 4 with inset stripes 3 of I.R. absorbtive C. The strips 3 may be below, or flush with the surface of layer 4, and may extend for the whole layer thickness (Fig. 4, not shown). An I.R. reflective layer 5 is provided. In alternatives, the non-magnetic material has U.V., I.R. or #-ray transmissive or reflective properties, or thermal or electrical properties which can be sensed. Verifying apparatus senses both the magnetic and non- magnetic materials and if the signals therefrom show correlated patterns, the document is taken as genuine. In Fig. 6, the apparatus has an I.R. source 7, I.R. sensor 8, D.C. magnetic field source 9 and a magnetic sensor 10. Strips 3 moving past sensor 8, or layer 4 moving past sensor 10 generate pulsed signals. These signals are balanced and delayed so that equal magnitude signals arrive simultaneously at differencing circuit 16, Fig. 8. The output from 16 is fed via integrator 17, threshold device 18 and invertor 19 to AND gate 20. One sensor output is also fed via integrator 21, threshold devices 22, 23 and invertor 24 to the gate. Device 25 applies a signal to the gate when the document has past the sensors. A verification signal issues at 26.
Patent GB-141338-A (GB)
Title: An improved gauge for use in grinding twist drills
IPC: B23Q17/09
Filed: 1920-03-26
Abstract: 141,338. Schurter, K. Riiegg-. April 4, 1919, [Convention date]. Bevels.-A device for gauging or testing twistdrills comprises a rest a of V-section, having a rib a' to which is pivoted at c a sleeve e carrying a screw f engaging with a rack on a member g which can slide in the sleeve. The member g has a nose h and a notch g'. An angular scale is provided for reading the inclination of the member g. To test whether the point b<1> of the drill is on the axis. the drill is placed in the rest, and the member g after being adjusted to the angle of the cutting edge, is moved until the nose h touches the point b<1>, the size of the gap A then being observed. The drill is then turned through 180 degrees and the size of the gap again observed. If this is not the same as that of the gap A, the point b<1> is known to be eccentric. The gauge may also be used to facilitate grinding the cutting-edge of the drill to any desired angle.