baber/WOPTO huggingface dataset:
Patent GB-478812-A (GB)
Title: Improvements in and relating to electron discharge tubes
IPC: H01J21/02
Filed: 1936-05-25
Abstract: 478,812. Discharge apparatus. HARRIES, J. H. O. May 25, 1936, No. 14796. [Class 39 (i)] In an electron-discharge tube of the kind comprising a cathode, an accelerating electrode and an anode and in which the distance between the accelerating electrode and the anode is so chosen that the rate of change of the distance curve is positive or not more than slightly negative, as described and claimed in Specifications 380,429 and 385,968, rod-like directing electrodes are provided which are so positioned in relation to the electron discharge as to direct the electrons in a comparatively confined path towards the anode, whereby the density of the electron stream is increased. The effect of the space charge in producing a potential minimum in the space between the accelerating electrode and the anode is thereby increased, and smaller anode diameters may be used. In the form shown, a flattened equipotential cathode 14 is surrounded by lenticular control and accelerating grids 11, 10 and a circular anode 1. In the space between the accelerating grid and anode, and outside the region between the control grid and its projection on the anode perpendicular to its greatest diameter, are placed four rod directing electrodes 17 of circular cross-section similar in dimensions to the electrode support rods 7. The rods may be of non-circular cross-section with their greatest transverse dimension parallel to the electron stream and may alternatively be placed between the control and accelerating grids or between the control grid and the cathode. They are maintained at about cathode potential and may be connected to the cathode inside the valve. Dimensions are given for the example described.
Patent GB-293950-A (GB)
Title: Improvements in or relating to sparking plugs for internal-combustion engines
IPC: H01T13/39
Filed: 1927-06-02
Abstract: 293,950. Guinness, K. E. L. June 2, 1927. Sparking-plugs. - A central inductor 10 of copper or similar material of high thermal conductivity, is combined with an outerend piece 11 of harder material, such as steel. This may be threaded into or on to the copper portion and carry clamping nuts for the insulation and lead, or may consist of a plating of nickel or chromium, Fig. 3.
Patent GB-128218-A (GB)
Title: Improved Auto-rotative Wheel.
Inventor: PIERRE GABRIEL GIRAUDON
Filed: 1919-06-12
Abstract: 128,218. Giraudon, P. G. Oct 27, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Self-driving machines. - A wheel is automatically rotated by a series of rollers or counterweights 1, 2 - - 28 near its periphery, the rollers on one side being further from the centre than those on the other, and being moved outwards and inwards as the wheel rotates.
Patent GB-361306-A (GB)
Title: Manufacture of arylthioglycollic acids
Filed: 1930-05-15
Abstract: O - Aminoarylmercaptans; o-aminoarylthioglycollic acids.  An aryl-substituted thiourea is treated with a halogen to give an aminothiazole compound which is hydrolysed to an o-amino-arylmercaptan, and this converted to an o-aminoarylthioglycollic acid.  The thiourea employed as starting material is of the type RNHCSNHR<1>, R being an aryl nucleus substituted or not, and R<1> hydrogen, an alkyl or aryl group. For the hydrolysis of the thiazole compound potash or alkaline carbonates or bicarbonates may be used, and for the last stage chloracetic acid itself or a metallic salt thereof is employed. In examples (1) p-phenetylthiourea is treated with chlorine in carbontetrachloride (or with bromine in chlorbenzene), the product saponified with aqueous potash, and treated with chloracetic acid to give o-amino-p-ethoxyphenylthioglycollic acid anhydride on isolation: (2) p-tolylthiourea is treated with bromine in glacial acetic acid, saponified with aqueous potash, and condensed with chloracetic acid to give 2-amino-5-methylphenylthioglycollic acid anhydride on isolation: (3) o-tolylthiourea is treated with bromine in carbontetrachloride, the press-cake obtained is boiled with alcohol and neutralized, saponified with aqueous potash, and condensed with chloracetic acid to give 5-bromo-2-amino-3-methylphenylthioglycollic acid anhydride on isolation; if the press-cake obtained from the first step is treated with aqueous bisulphite instead of alcohol the final product is 2-amino-3-methylphenylthioglycollic acid anhydride.
Patent GB-1133634-A (GB)
Title: Improvements in or relating to semiconductor voltage-dependent capacitors
IPC: H01L29/00
Filed: 1966-04-05
Abstract: 1,133,634. Semi-conductor devices. SIEMENS A.G. 5 April, 1966 [7 April, 1965], No. 15041/66. Heading H1K. In a voltage variable capacitor comprising a reverse biased PN junction in a semi-conductor body, the capacitance sweep is increased by providing a second junction whose capacitance can be connected in parallel with that of the first junction by supplementary control means which alters the conductivity of part of the body. As shown, Fig. 1, the capacitor comprises an N type silicon layer 7 epitaxially grown on an N+ type substrate 8 and having two P type regions 1, 2 produced by planar diffusion using an oxide mask 3 on which is deposited a field electrode 4 bridging regions 1 and 2. Junction 19 between primary region 2 and layer 17 is reverse biased to form the voltage variable capacitance and by applying a control voltage to field electrode 4 a surface channel can be produced connecting supplementary region 1 to primary region 2 to increase the capacitance of the device. In a second embodiment, Fig. 2 (not shown), the supplementary region (13) is annular and surrounds the primary region (14), and the field electrode (10) is also annular. Further supplementary regions may be provided, the semi-conductor material may be germanium or a compound, and control of the conduction between the primary and supplementary regions may be effected by photons from a controlled source. The device may form part of an integrated circuit.
Patent GB-863787-A (GB)
Title: Process for producing phosphate coatings on metals
IPC: C23C22/73
Filed: 1959-05-01
Abstract: 863,787. Degreasing and phosphating metallic surfaces. DU PONT DE NEMOURS & CO. E. I. May 1, 1959 [May 1, 1958], No. 15049/58. Class 82(2) In a process for phosphating a metal article, the article is introduced into a zone containing the vapour of a chlorinated hydrocarbon solvent which forms an azeotropic mixture with water, subjected while in one part of the zone to treatment with an aqueous phosphating solution, and dried by exposure to the said vapour in another part of the zone. The solvent may be trichlorethylene, perchlorethylene or methylene chloride. The phosphating solution may be based on zinc, iron or manganese phosphates: the exemplified solution is nitrite-accelerated zinc dihydrogen phosphate solution. Metals which may be coated are steel, zinc, aluminium and cadmium. As shown, article 25 is degreased by being suspended over boiling solvent 17, is then moved to position 27 where it is sprayed with phosphating solution from spray-head 22, and is then returned to position 25 where it is dried. Solvent 17 is vaporized by heating coil 18, while cooling coil 12 prevents solvent vapour rising above line 30. The apparatus may be modified to include a water-spray step after the phosphating, a chromic acid spray rinse, and a final painting step. The phosphating solution, which may alternatively be applied by dipping, preferably has a temperature between the boiling point of the solvent and the boiling point of the azeotropic solvent/water mixture.
Patent GB-581966-A (GB)
Title: Improvements relating to gun laying equipment
IPC: F41G5/00
Filed: 1940-10-09
Abstract: 581,966. Gun sights. BRITISH THOMSON - HOUSTON CO., Ltd.. and CARTER, F. W. Oct. 9, 1940, No. 15055. [Class 92 (ii)] Relates to predictors in which the correction for instantaneous angular velocity of the target is effected by utilizing the precessional movement of a gyroscope spinning about an axis G<0> parallel to the gun. According to the invention, the precessional torque of the gyroscope when the gun is moved to follow the target is used to displace a pair of bell-crank levers OA, OB and O<1>A<1>, O<1>B<1>, the long arms of which intersect at a sighting-point P, the displacement PQ of which is at right angles to the displacement G<0>H<0> of the axis of the gyroscope. The gun is thus directed ahead of the target in the line of its motion by an amount proportional to the angular velocity of the target across the line of sight. In the form shown, the short arms OA, O<1>A<1> of the bell-crank levers carry guides a, a<1> for pins G, G<1> which receive movements GH and G<1>H<1> proportional to G<0>H<0> by means of two pantographs of equal ratio, the fulcra F, F<1> of which are simultaneously adjustable by gearing D in fixed guides f, f<1> to suit the time of flight. U.S.A. Specification 1,936,442 is referred to.
Patent GB-190977-A (GB)
Title: Improvements in non-skid device for automobile tires
IPC: B60C27/06
Filed: 1922-05-29
Abstract: 190,977. Bachman, R. H., and Bachman, F. H. May 29, 1922. Tread bands. - Transverse chains 3 or other flexible bands are permanently fastened at one end and detachably fastened at the other end to rings 5, wbich are loosely mounted in recesses 10 between t h e felloe 6 and flanged side-rings 9. The permanent fastenings comprise stirrups 7 which are riveted to one ring 5, preferably that on the outer side of the wheel. Bolts 16 are inserted into the end links of the chains 3 and fit into apertures in the branches of the stirrups 7. The temporary fastenings comprise hooks 8 riveted to the other ring 5.
Patent GB-397084-A (GB)
Title: Covering plate for the lower stitch forming devices of sewing machines
IPC: D05B73/12
Filed: 1932-06-14
Abstract: 397,084. Sewing-machines. GONYK, 1., 64, Rennweg, Vienna. June 14, 1932, No. 15230/33. Convention date, June 17, 1931. Divided application. [Class 112.] The usual work plate slide is replaced by a rotatable plate 173. The pivot 175 is a loose fit in the work plate to enable the plate 173 to be tilted by pressure on a finger piece 174 and clear the edge of the recess in the work plate. The clearing is facilitated by a bevelled edge 180. A spring on the pivot maintains the plate in its recess.
Patent GB-165318-A (GB)
Title: Improvements relating to alternating current measuring instruments
IPC: G01R11/00
Filed: 1920-06-05
Abstract: 165,318. James, S., and Chamberlain & Hookham, Ltd. June 5, 1920. Drawings to Specification. Registering special quantities.-In alternating- current measuring-instruments of the integrating type having mechanism such as a maximumdemand indicator or change-over device consisting in part of a solenoid or other electromagnetic means, a condenser is used in series with the solenoid instead of the usual resistance. The condenser may be arranged in the meter.
Patent GB-758183-A (GB)
Title: Improvements in magnetic holding devices
IPC: B23Q3/154
Filed: 1952-06-18
Abstract: 758,183. Magnets. NEILL & CO. (SHEFFIELD), Ltd., J., and BOWER, W. L. Sept. 18, 1953 [June 18, 1952], No. 15371/52. Class 35. [Also in Group XXIII] A magnetic work-holder comprises a magnetic circuit which extends between magnetically separated pole-pieces 7, 9, Fig. 1, and includes a permanent magnet 1, 2, and an electromagnetic coil 6 encircling part of the circuit whereby a member of magnetic material applied to the pole-pieces will be held by flux derived from the permanent magnet, but can be released by passing electric current through the coil. The permanent magnet is formed by a pair of bars of aluminium-cobalt-iron alloy which are magnetized, after the workpiece has been placed on the pole-pieces, by passing a direct current through the coil 6 for a short time. The workpiece may be released by passing a direct current through the coil in the reverse direction, but demagnetization is preferably effected by alternating current of progressively decreasing strength. A mild steel plate 4 and non-magnetic bolts 5 secure the permanent magnet to a mild steel base-plate 3 carrying the pole-pieces 7 which are connected to a central pole-piece 9 by non-magnetic bolts 13. Bars 10, consisting of alternate strips of magnetic and non-magnetic material arranged to provide a series of gaps of graduated reluctance, are mounted on non-magnetic plates 12 between the pole-pieces. Figs. 4 and 5 show an alternative construction in which the workholding surface is composed of pole-pieces 29 in contact with the upper faces of magnet bars 21, 22 and pole-pieces 27, 28 in contact with the lower faces through a base-plate 23. When the coil 26 is energized, flux passes, through the workpiece 25, from pole-pieces 28 and 29 to pole-pieces 27. After magnetization the flux passes from pole-pieces 29 to pole-pieces 27 and 28. The magnetizing current is provided from a single or polyphase alternating current supply A-A, Fig. 6, by a full-wave rectifier B while the electromagnetic coil C is centretapped so that its two ends C1, C3 may be connected alternately with the negative pole of the rectifier while the centre tap C2 remains permanently connected to the positive pole in order to demagnetize the work-holder. These connections are effected automatically by switches S2, S3 actuated by a cam-plate on an electric motor M which also adjusts a variable resistance VR in the alternating current supply to reduce gradually the strength of the current and finally opens a switch S1 to switch-off the motor and a pilot light L2. The demagnetizing current may alternatively be produced by grid controlled rectifiers or thyratron tubes and the power supply by a rotary converter with adjustable excitation. Final demagnetization may be effected by moving the permanent magnets in relation to the pole-pieces. Specification 429,199, 633,223 and 633,608 are referred to.
Patent GB-666473-A (GB)
Title: Windshield cleaner
IPC: B60S1/38
Filed: 1947-06-11
Abstract: 666,473. Windshield cleaners. PRODUCTIVE INVENTIONS, Inc. June 11, 1947 [Dec. 13, 1945], No. 15422/47. Class 138 (i). In a windscreen wiper for flat or curved surfaces, a pressure distributing bridge member is connected at its extremities, with provision for relative movement, to a holder which is flexible throughout its length only in a plane perpendicular to the surface to be wiped and carries a flexible wiping element. As shown, a flexible holder 6 consisting of two flexible metal strips 15 each engaging a groove 14 located on either side of a wiping element 3 as disclosed in Specification 666,548, has the strips retained in spaced relationship by fastening brackets 25, indentations in the brackets engaging corresponding recesses in the strips to prevent relative movement therebetween. The brackets include integral portions 18, 19 which are pivotally attached to a substantially-rigid bridge member 28, a lost motion connection 24 being provided on the portion 19. The bridge member is pivotally mounted on an operating arm 1 by a connector 30. In a modification the lost motion connection 24 may be omitted, one of the fastening brackets being slidably connected to the holder. An additional intermediate locking bracket may be used with long wiping assemblies, with or without attachment to the bridge member. Specification 347,198 also is referred to.
Patent GB-930058-A (GB)
Title: Heterogeneous nuclear reactor
Inventor: BOIS BERNARD BAILLY DU
IPC: G21C7/00
Filed: 1962-04-24
Abstract: 930,058. Nuclear reactors. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 24, 1962 [May 17, 1961], No. 15599/62. Class 39 (4). A heterogeneous nuclear reactor comprising fuel elements disposed in a moderator material in a lattice constituted by a number of sub-lattice assemblies of differently orientated parallel elements, is characterized in that the fuel elements are disposed inside channels in the lattice comprising a central zone occupied by all the sub-lattices and lateral zones occupied by a single sub-lattice, all the zones lying inside the moderator material. In one arrangement, Fig. 1, the fuel channels comprise two sets of tubes 1, 2 at right-angles to each other. The tubes may be pressure tubes immersed in a tank 4 containing liquid moderator, such as heavy water; the corners of the tank may be rounded so that the tank is generally spherical. Controlrods 20 pass vertically into the tank, that is at right angles to both sets of tubes 1 and 2. In another arrangement, Fig. 3 (not shown), the tank 4 is hexagonal in plan and three sets of tubes pass between pairs of opposite parallel sides; thus the central zone is crossed by all three sets of tubes whilst some of the outer zones are crossed by two sets and some by only one set. The various sub-lattices may be designed for different thermal positions, for example one could be used for steam generating and another for superheating.
Patent GB-1042204-A (GB)
Title: Hydroxy-amido ethers, a process for the manufacture thereof and cosmetic and parmaceutical preparations containing same
IPC: A61K8/42
Filed: 1964-04-15
Abstract: Compounds of the general formula <FORM:1042204/C2/1> wherein R is the b -pyridyl methyl or the cetyl radical, in particular D(+)-N-(a ,g -dihydroxy-b ,b  - dimethyl - butyryl) - 3 - [pyridyl - (3)-methoxy]-propylamine and -3-cetyloxy-propylamine which may be made by the reaction of racemic or optically active 2-hydroxy-b ,b -dimethylgamma butyrolactone with an amine H2N-CH2-CH2-CH2-O-R have pantothermic acid activity and may be admixed for enteral or parenteral administration with a carrier, e.g. water, talc, gelatin, lactose, starch, magnesium stearate, gums, polyalkylene glycols, petroleum jelly, or in tablets or liquid form.  The Examples include the description of the preparation of the amine intermediates from ROH, R as above defined, by addition of acrylonitrile followed by the catalytic hydrogenation of this product to the amine and give formulations of a blood circulation improving salve including the product with R = b  - pyridyl methyl and an anti - sunburn lotion using the cetyl ether.
Patent GB-980745-A (GB)
Title: Non-magnetic steels having a high fatigue limit
IPC: C22C38/38
Filed: 1961-05-01
Abstract: Crank-shafts, connecting rods, shafts and springs are formed from alloy steels containing 0.3-1.2% by weight of carbon which is retained in the austenite phase by quenching, the steels being both non-magnetic and non-precipitation-hardening The steels may be cold-worked up to a maximum of 20%.  Particular steels exemplified contain in percentage by weight: .C.Mn.Cr.Ni.N .0.5.18.4.7.-.- .0.68.8.7.3.7.- .1.15.12.3.-.-.- .0.5.20.5.14.5.-.0.2 while other compositions referred to by way of comparison contain: .C.Mn.Cr.Ni.N.V .0.1.0.8.18.9.-.- .0.23.7.9.7.8.5.6.-.- .0.53.21.14.6.-.0.2.1.3 .0.21.20.14.1.-.0.2.- the balance in each case being iron
Patent GB-333630-A (GB)
Title: Improvements in or relating to electrical terminal devices, coupling devices and thelike
IPC: H01R4/48
Filed: 1929-05-18
Abstract: 333,630. Biggs, H. F. May 18, 1929. Couplings; direct connections between conductors.-An electrical connecting device comprises a pair of slightly tapered spiral springs 2, 3 with their turns intermeshed which fit into an insulating housing 1 having a slightly tapered bore. To make connection the parts are separated out and the wire passed through the hole 1<b> in the housing, threaded between the inside of spring 3 and the outside of spring 3 and the springs then pressed into coaxial alignment and replaced into the housing. According to a modification the springs may be used in a lamp holder to form terminals and spring contacts. According to another modification the device may be used for joining two cables.
Patent GB-298585-A (GB)
Title: An improved method of irradiating milk solids with ultra-violet rays and the productof such method
IPC: A23C3/07
Filed: 1927-06-11
Abstract: 298,585. Clark, G. M., (Dry Milk Co.). June 11, 1927. Drawings to Specification. Vitamins.-In the treatment of milk with ultraviolet radiations for the purpose of imparting antirachitic properties thereto, the intensity of the radiations and the duration of treament are controlled to avoid the production of an unpleasant odour and taste, whilst at the same time at least 75 per cent of the total producible antirachitic property is imparted. The milk is agitated during the treatment. Dry milk powder may be similarly treated. Specifications 14833/12, 7428/13, [both in Class 1 (i), Chemical processes &c.]; and 236,197 are referred to.
Patent GB-348405-A (GB)
Title: Improvements in or relating to flanges for the coils of electromagnetic apparatus
IPC: H01F5/04
Filed: 1930-05-22
Abstract: 348,405. Electromagnets. FULD & CO., TELEPHON-UND TELEGRAPHENWERKE AKT..GES, H., 136, Mainzerlandstrasse, Frankfort-on-Main, Germany. May 22, 1930, No. 15711. Convention date, May 25,1929. [Class 35.] In an electromagnet coil, the flange to which the terminals are attached is of insulating material and has terminals of flat pattern inserted on edge and close together, and the cross section of the flange is increased at the points of attachment of the terminals. Further rigidity of the flange may be obtained by the provision of a rib. In the form shown, the cross section of the flange 1 is increased where the flat terminals 2 are inserted, and the rib 6 gives further rigidity. The ends of the relay windings are passed through the holes 4 and soldered to the terminals which may have identification numbers impressed on the flange.
Patent GB-201332-A (GB)
Title: Improvements in and relating to the production of camphor
IPC: C07C49/437
Filed: 1922-06-06
Abstract: Camphor is obtained by passing borneol or isoborneol vapour in admixture with air or other oxygen-containing gas over heated "highly active" charcoal, that is, charcoal capable of absorbing considerable volumes of gas.  The charcoal is preferably produced by saturating wood charcoal with a solution of potassium carbonate, partially drying, and then calcining the product in the absence of air.  The borneol or isoborneol is heated to a temperature near the boiling point in a distilling vessel provided with a tower containing a number of perforated trays supporting the charcoal, and air heated to a slightly higher temperature is then introduced into the liquid. The reaction product passes into a condenser where the camphor separates out.
Patent GB-399930-A (GB)
Title: Improvements relating to dashpots
IPC: G01G23/08
Filed: 1932-06-04
Abstract: 399,930. Dashpots. AVERY, Ltd., W. & T. and TIMSON, W., Soho Foundry, Birmingham. June 4, 1932, No. 15757. [Class 108 (iii).] In a liquid dashpot particularly for use with weighing- apparatus, and comprising an openended cylinder 3 to the upper part of which a receptacle 7 is adapted to be screwed or otherwise detachably secured, e.g. by a bayonet-slot connection, a resilient washer 8 forms a liquidproof seal between the receptacle and lower end of the cylinder, the damping fluid being poured initially into the receptacle, so that as it is being secured in position the liquid in it is transferred to the cylinder. The cylinder has a non-spillable top 3a through an aperture 3b in which the piston-rod 4 passes. The container may be moulded from a plastic substance of the phenol aldehyde condensation product type.