baber/WOPTO huggingface dataset:
Patent GB-387417-A (GB)
Title: Improvements in or relating to screw thread cutting tools
IPC: B23G5/00
Filed: 1931-09-14
Abstract: 387,417. Chasers. MANNESMANNRÍHRENWERKE, 1B, Berger Ufer, Dusseldorf, and SCHWERD, F., 1A, Welfengarten, Hanover, both in Germany. Sept. 14, 1931, No. 25762. [Class 83 (iii).] In a screw-cutting tool wherein only one or other of the sides of the teeth is used for forming the flanks of the thread, each tooth is provided with a cutting surface inclined to the corresponding cutting flank at an acute angle so as to provide top rake for each tooth individually in a plane normal to the thread flank. As applied to a tangential chaser. roughing teeth x are provided which cut on both sides and are given top rake a<2>, normal to the work axis, as shown by the section B-B, (in Fig. 5), whilst the profile teeth y cut on the right hand side only and are given top rake alpha<1> normal to the thread flanks, as shown by the section A-A, (in Fig. 4). A following chaser has teeth which cut on the left side only and are given corresponding top rake. The roughing teeth may be mounted rigidly and the finishing teeth resiliently, e.g. by forming the finishing teeth on a swan-neck portion of the chaser, or alternatively the roughing and finishing teeth may be formed on separate chasers, the former being rigid and the latter resilient.
Patent GB-206646-A (GB)
Title: Improvements in or relating to lighting ship's lifeboats and the like
IPC: B63C9/02
Filed: 1922-09-23
Abstract: 206,646. Btair, J. G. Sept. 23, 1922. Lifeboats.-A lighting system for a lifeboat comprises a switch the movable contact of which is operated by a float A, enclosed in a casing B, when the boat enters the water. The switch lever D is operated by a rod A<1> attached to the float, and the switch is opened and the float rendered operative by the depression of a knob 0 which causes the member M to engage the rod A<1> and the member N to engage the switch lever D respectively. When the float-operated switch is open the lamp circuit may be closed by a switch K which may be used for signalling.
Patent GB-1270471-A (GB)
Title: Laminated cable jacket with sealed and reinforced seam
IPC: H01B13/26
Filed: 1969-05-21
Abstract: 1,270,471. Cable sheath. GENERAL CABLE CORP. 21 May, 1969 [28 May, 1968], No. 25835/69. Heading H1A. A multi-conductor cable core 14 is provided with a vapour-proof sheath 10 by folding longitudinally around the core 14 a plastics tape containing a metal foil 32, overlapping the edges of the tape to form a tabless seam under which is inserted a plastics-faced reinforcing strip 16, and fusing confronting plastics surfaces together. The tape may have a further layer 36 of higher fusion point plastics on its outer surface, and the reinforcing strip may have a similar further layer on its inner surface. An outer sheath may be extruded over the tape.
Patent GB-1235066-A (GB)
Title: Centrifuge process and apparatus
IPC: B04B1/20
Filed: 1969-05-21
Abstract: 1,235,066. Centrifugal separators. PENNWALT CORP. 21 May, 1969 [27 May, 1968], No. 25869/69. Heading B2P. In a screw-conveyor centrifuge for separating the constituents of a solids-liquid mixture the centrifuge bowl and the screw-conveyor are periodically driven at substantially the same or different speeds. When driven at the same speed during feeding and for a limited period thereafter, there is no agitation of the solids as they are centrifugally separated outwardly from the liquid so that undisturbed settling and compaction of the solids along the bowl wall take place. When driven at different speeds the screw-conveyor effects discharge of the compacted solids. As shown in Figure 1, the centrifuge bowl 11 is belt-driven by a motor 14 and a gearbox 30, including a planetary gear and pinion assembly, is operatively connected between the screw-conveyor 16 and the bowl. The speed of the conveyor relative to the bowl is controlled by means of an eddy-current brake 32 which acts through a universal coupling 33 to apply a torque-resisting force to an extension 38 of the gearbox pinion, the greater the torque the greater the speed differential between th conveyor and the bowl. A solenoid-operated valve 50 is incorporated in the feed pipe 20 to interrupt the feed immediately before and during at least part of the solids discharge period. Energization and deenergization of the brake 32 and of the valve 50 are controlled by means of a time-switch 52. A variable resistor 78 is included in the brake electrical circuit to obtain the desired degree of energization of the brake and hence of the torque applied thereby. An auxiliary motor 90 may be provided to selectively drive the pinion extension 38 through the rotor 46 of the brake 32 and a belt and pulley system 92 in order to compensate for the resisting torque imposed upon the conveyor by the feed material so as to ensure that the conveyor is driven as near as possible at the same speed as the bowl during the non-discharging period. In a modification, Figure 2, a skimming device 60 is provided for discharging liquid immediately prior to the solids discharging operation. Radial movement of the skimming device is controlled by a traversing mechanism 62 which may be operated manually or, as shown, by energizing a solenoid-actuated valve 65 to admit pressurized air to a cylinder 66 to act against a spring-biased piston 67 whereby motion is transmitted by a piston rod 68 to the skimming device 60. Energization of the valve 65 is controlled by the time-switch 52. The centrifuges are particularly suitable for separating solids and liquid of approximately the same specific gravity e.g. sludge from electrolyte used in electro-chemical machining or clay solids from a clay-water mixture.
Patent GB-1388441-A (GB)
Title: Process for the preparation of o-aminothiophenols
IPC: C07C/
Filed: 1972-06-02
Abstract: 1388441 o-Aminothiophenols HOECHST AG 2 June 1972 [4 June 1971] 25904/72 Heading C2C  An o-aminothiophenol is prepared by reacting an o-chloronitrobenzene with a water-soluble sulphide or bisulphide in an alkaline medium, subsequently in the presence of from 1À5 to 2À5 moles of a water-soluble sulphite or bisulphite, or from 0À75 to 1-25 moles of a water-soluble pyrosulphite per mole of o-chloronitrobenzene at a temperature of from 0‹ to 30‹ C. adjusting the pH of the medium to from 5 to 7 by adding a mineral acid. The preferred sulphide is sodium sulphide, the preferred bisulphide is sodium bisulphide, and the preferred sulphite is sodium sulphite. The mineral acid is preferably sulphuric, phosphoric or hydrochloric acid and the process is preferably carried out in an inert gas atmosphere.
Patent GB-423615-A (GB)
Title: Oscillation dampers for vehicles running or operating on rails or tramways
IPC: B61F5/10
Filed: 1933-09-20
Abstract: 423,615. Railway vehicles; vibrationdampers. LEYLAND MOTORS, Ltd., and HAWORTH, H. F., Hough Lane, Leyland, Lancashire. Sept. 20,1933,No. 25993. [Classes 103 (vi) and 108 (iii)] Lateral oscillatory movements of a railway or tramway vehicle axle or body are minimized by mounting on the same an inertia vibrationdamper comprising a mass 1 having a limited transverse movement relative to the axle or body, means such as springs 5 for restoring the mass to a central position, and means for damping the oscillations of the mass. In the construction shown the mass 1 is mounted for movement relatively to the axle 2 in a fluidtight casing 4 filled with oil and secured to the axle. Movement of the mass 1 within the casing is heavily damped by the restricted flow of oil permitted around the mass and, if desired, through passages 6 in the latter. Alternatively, the casing 4 may be massive and free on the axle, and a piston within it secured to the axle, while the damping may be effected by solid instead of fluid friction. An inertia vibration-damper may similarly be mounted on the vehicle body.
Patent GB-1165667-A (GB)
Title: Control Device Operable by Change of Gas Pressure.
IPC: H01H61/00
Filed: 1968-05-30
Abstract: 1,165,667. Fluid switch. TELEFONAKTIEBOLAGET L. M. ERICSSON. 30 May, 1968 [31 May, 1967], No. 26062/68. Heading G4P. [Also in Division H1] A fluidistor 50 is controlled by relays 51, 52. Each relay comprises a closed container containing an electrolyte 55, 56 which when current is passed through it produces a gas and when a light source 53, 54 is energized causes a pressure increase in the gas to cause a diaphragm 57, 58 to bulge outwardly. The diaphragms 57, 58 are connected to fluidistor 50 by control channels 61, 62 and the pressure charge in these channels caused by a diaphragm bulging outwards deflects the fluid flow from one channel 59, 60 to the other.
Patent GB-822278-A (GB)
Title: Gasoline containing organic boron compounds
IPC: C07F5/04
Filed: 1955-09-12
Abstract: Gasolines comprise up to 6 c.cs. of tetraethyl lead per U.S.A gallon, a halide scavenging agent and at least one boron ester of the general formula <FORM:0822278/III/1> wherein R is an alpha or beta alkylene radical having 3-20 carbon atoms, the boron ester being present in an amount equivalent to 0.002 to 0.1% by weight of boron.  The preferred ester is derived from 2-methyl-2:4-pentanediol, but other esters from alpha and beta diols are named and their preparation is given (see Group IV (b)).  The scavenging agent is suitably either 1 theory of ethylene dibromide or 1 theory of ethylene dichloride and 1/2 theory of ethylene bromide ("theory" denoting the amount stoichiometrically required to combine with all the lead to form lead halide).  The fuels may also comprise antioxidants, dyes, solvent oils or alcohols. Specification 822,279 is referred to.ALSO:Boric acid esters of diols having the general formula <FORM:0822278/IV (a)/1> where R is an alpha or beta alkylene radica having from 3-20 carbon atoms, are prepared by reacting the corresponding alpha or beta glycol with orthoboric acid in equimolar proportions at mildly elevated temperatures to split off two mols. of water and remove at least part of this water from the system.  The water remaining may be decanted when a solid boron product is formed. The preferred methods for removing the water are by blowing with nitrogen or air or by distillation, suitably fractional or azeotropic.  In an example, a 1:1 molar mixture of 2-methyl-2:4-pentanediol and boric acid is heated to 70-75 DEG  C. and then cooled; the ester product crystallizes from an aqueous mother liquor.  Alternatively the same diol or pentanediol-2:4 may be reacted with orthoboric acid as in Example 1 of Specification 822,279 and the resulting ester anhydride treated with water to give the desired basic esters of the diols. The esters, many others of which are named, are gasoline additives (see Group III).
Patent GB-200415-A (GB)
Title: Improvements in tool-holders for metal planing and shaping machines
IPC: B23D13/00
Filed: 1922-09-27
Abstract: 200,415. Franke, R., Bechert & Co. Drahtstifte-, Schrauben-, und Stahlindustrie-Akt.-Ges. Sept. 27, 1922. Planing and shaping.-A. duplex tool holder for a planing or shaping machine comprises a plate a having recesses which accommodate blocks f secured by a bolt g and having apertures i which receive tool holders k. The tools are secured in slots in the holders by screws n. The plate a is adapted to fit in a recess in the slide r and its angular movement therein is limited by a slot o coacting with a fixed pin on the slide, the two tools being alternately brought into cutting position by engagement with the work at the beginning of each stroke. Springs may be employed for reversing the position of the tools.
Patent GB-190825-A (GB)
Title: Improvements in the art of raising submerged vessels
IPC: B63C7/06
Filed: 1921-10-03
Abstract: 190,825. Reno, J. W. Oct. 3, 1921. Sunken ships, raising.-A double pontoon for raising sunken ships comprises two hollow cylinders 1, 2 flexibly connected one above the other by cables 8 and each having a closed upper end 3 and an open lower end 4. Around each cylinder is a reinforcing-band 5, which carries a thrust-block 6, as described in Specification 174,444, and an equalizer bar 7 to which are attached lifting cables 8 having hooks 9 at their lower ends, as described in Specification 158,485. On the band 5 of the lower cylinder are fixed eyes 12, with which engage the hooks 9 of the cables of the upper cylinder. The closed end of each cylinder is fitted with a pipe 13 having a cock 14, the length of the pipe within the cylinder being such that, when the water level in the cylinder rises to the level of the lower end of the pipe on opening the cock 14, the air trapped in the upper part of the cylinder imparts sufficient buoyancy to the latter to cause it to float with its upper end just above the surface. The double pontoons are attached to the sunken ship, as shown in Fig. 5, either by divers or by means of the mobile submarine tractor described in Specification 174,444. Air is then forced into the upper cylinder from a compressor on a salvage ship through a pipe 15, which is coupled to a pipe 18 passing through the lower cylinder and discharging under the open lower end of the upper cylinder. The vessel is thus raised till the upper cylinders emerge from the surface, while the deck is still submerged. In order to raise the vessel further, the upper cylinders 2 are unhooked from the lower cylinders and attached directly to the ship, and more air is forced into the cylinders either through the pipes 13 or by employing a siphon 20, such as that described in Specification 158,485. Specification 186,368 also is referred to.
Patent GB-906759-A (GB)
Title: Polymerization method and product
IPC: C08F136/08
Filed: 1961-07-19
Abstract: Polyisoprene which has a substantially completely trans-1,4-configuration is made by polymerizing isoprene in the presence of a catalyst comprising (1) vanadium trichloride (2) an organoaluminium compound of the formula AlR3 where R is a hydrocarbon radical, and (3) a compound of the formula TiX4 or R1TiX3 where X is Cl, Br, I, or OR11, and R1 and R11 are hydrocarbon radicals, and in which the molar ratio of the aluminium compound to vanadium trichloride ranges from 2:1 to 200:1, and the molar ratio of the aluminium compound to the titanium compound ranges from 2:1 to 80:1. The vanadium trichloride is preferably dispersed on the surface of a finely divided inert solid carrier such as clay, silica, alumina, magnesia, or titania.  The R radical in component (2) may be methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, hexyl, dodecyl, cyclopentyl, cyclohexyl, phenyl, tolyl or phenylethyl. Component (3) of the catalyst is preferably tetra(2-ethylbutyl)titanate.  The polymerization is generally effected in the presence of a hydrocarbon solvent, and the polymer recovered by conventional techniques. Specification 877,371 is referred to.
Patent GB-998919-A (GB)
Title: Improvements relating to pigments, lacquers and printing inks and to the colouringof polymeric materials
IPC: C09D101/00
Filed: 1963-07-02
Abstract: A synthetic polymer or a film-forming material having application in lacquers and printing inks, is pigmented with a dioxazine of formula <FORM:0998919/C3/1> wherein one of Hal1 or Hal2 is Cl and the other is Cl or Br.  The polymer may be polyvinyl chloride, polyvinyl acetate, polyacrylonitrile, a polymer of an ester of acrylic or methacrylic acid, polyethylene, polypropylene, polystyrene, rubber, chlorinated rubber, a polyamide, a polyester (e.g. of ethylene glycolterephthalate), acetyl cellulose or viscose; and the film-forming material may be nitrocellulose, shellac, phenol-formaldehyde resin, melamine-formaldehyde resin, urea-formaldehyde resin, an alkyd resin, a modified alkyd resin, polyvinyl chloride, polyvinyl acetate, polyvinyl acetal, an unsaturated polyester with/without styrene, a saturated polyester, an unesterified or an esterified epoxide resin, an oil reactive alkyl phenol resin, a drying oil (e.g. linseed oil) or a ketonic resin. Fillers, pigments, plasticizers, siccatives, and organic solvents also may be present.ALSO:A pigmented composition for use as a lacquer or printing ink comprises a film-forming material and a dioxazine of formula <FORM:0998919/C4-C5/1> wherein one of Hal, or Hal2 is C2 and the other is C2 or B5. The film-forming material may be a drying oil such as linseed oil.ALSO:Aluminium or steel sheets or foils are coated by spraying with lacquers comprising a dioxazine of formula <FORM:0998919/B1-B2/1> wherein one of Hal1 or Hal2 is Cl and the other is Cl or Br.  The examples disclose suitable lacquers based on: (3) urea-formaldehyde modified alkyd resin, (4) urea-formaldehyde resin, (5) coconut oil modified alkyd resin, and (7) epoxide resin.
Patent GB-993636-A (GB)
Title: Hinge
Inventor: FACIUS RONALD ERIC
IPC: E05D1/06
Filed: 1962-07-09
Abstract: 993,636. Hinges. BRITISH XYLONITE CO. Ltd. July 8, 1963 [July 9, 1962], No. 26249/62. Heading E2F. Members 11, 12 are connected by a hinge arrangement comprising a socket 13 in the form of a rectangular box or slot and a tongue 14 tapering to provide a lead-in portion for insertion into the socket, the tongue and socket having respective co-operating shoulders 25, 18 perpendicular to the direction of insertion of the tongue to prevent easy withdrawal of the tongue, and the members being capable of turning about a hinge axis adjacent the entrance to the socket. The tongue has some 20 degrees of angular play in the socket, and thereafter further hinge movement takes place by deformation of a thin neck 21 connecting the tongue to the member 12. The components are made of polypropylene or polyethylene.
Patent GB-1039367-A (GB)
Title: Improvements relating to an address printing machine
IPC: B41L45/00
Filed: 1965-06-22
Abstract: 1,039,367. Addressing-machines. ADREMAWERKE A.G. June 22, 1965 [June 24, 1964], No. 26336/65. Heading B6D. A pivoted printing arm carries a printing pad for engagement with an address plate and during the last part of its downward movement the end of the arm opposite the pad engages a resilient stop 12, Fig. 1 (not shown), secured to the machine frame so that the pad is raised from the plate immediately after impact, i.e. within a period of time shorter than one period of the natural frequency of vibration of the system comprising the arm and parts connected thereto, to avoid any repeated contact between the pad and the plate. The arm may be forced down manually against a spring, Fig. 1 (not shown), raised manually against a spring and released by a cam so that the spring hammers it down, Fig. 2 (not shown), or raised mechanically against a spring and released by an electromagnet so that the spring hammers it down, Fig. 3 (not shown).
Patent GB-735765-A (GB)
Title: Improvements in or relating to magnetic apparatus
IPC: H01F7/02
Filed: 1952-10-21
Abstract: 735,765. Magnetic apparatus with adjustable members. MINCHOM, R. I. Oct. 12, 1953 [Oct. 21, 1952], No. 26373/52. Class 35. [Also in Group XXXVI] The invention refers to the apparatus for testing a ferro-magnetic body 3 for cracks described in Specification 692,048 comprising a series of members 5, 6 and a magnet 4 interconnected by ball and socket joints and terminating in two heads 1, 2, having a plurality of magnetic, spring-loaded pins 7 for contacting the surface of the test body 3, and is characterized in that one or more of the balls 10 of the joints is made with a plate of aluminium 12 sandwiched between steel parts 13, 14 so that by rotation of the ball 10 the reluctance of the magnetic circuit may be varied as required. The non-magnetic plate 12 is non-diametral of the ball 10, and at an angle to the axis of the member to which it is attached, and is of such a width that the surface of the co-operating socket is always in contact with one or other of the steel parts 13, 14.
Patent GB-992395-A (GB)
Title: Improvements in the cleaning of fabrics
IPC: D06F43/00
Filed: 1961-07-21
Abstract: 992,395. Dry cleaning. L. E. MOULTHROP. July 21, 1961 [July 25, 1960], No. 26452/61. Heading D1A. In a dry cleaning process clothes are supported by a perforated platform 13 within a chamber 9 and immersed in a dry cleaning liquid whose pressure is alternately increased and decreased (Fig. 6, not shown) to dislodge dirt from the fabric (Figs. 1, 2, not shown). Chamber 9 is initially filled with dry cleaning liquid by a pump 23 connected to a sump 19. During the subsequent cleaning operation a valve 53 is opened for short periods at regular intervals whilst pump 23 operates continuously, thereby causing the pressure in chamber 9 to fluctuate. Valve 53 connects chamber 9 to a chamber 55 wherein a relatively low-pressure is maintained by a vacuum pump 67. Alternatively, chamber 55 may be vented to the atmosphere through a valve 59. Vapour withdrawn by pump 67 is condensed in a condenser 69 connected to sump 19 through a separator 73 in which incondensible gases are released through a vent 75. Chamber 9 is drained after the cleaning operation through a valve 49, a valve 45 being opened to admit atmospheric air. The clothes are subsequently subjected to further draining by pump 67 drawing air through valve 45, valves 49, 63, being closed during this operation. Dry cleaning liquid is cleansed by a filter 25. Conduits 81, 83, 85 provide connections to apparatus similar to that shown which may be provided to supply a separate quantity of dry cleaning liquid to chamber 9 for rinsing the clothes after the cleaning operation. The process may be manually controlled or automatically controlled by timing means (not shown).
Patent GB-1423495-A (GB)
Title: Oligocarboxyalkane-phosphonic acids and process for makiing  them
IPC: C23C18/36
Filed: 1974-06-14
Abstract: Oligocarboxyalkanephosphonic acids of the general formulae <IMAGE> in which R denotes hydrogen, alkyl or the carboxyl group and R<1> denotes hydrogen or alkyl are prepared. These compounds are obtained by reacting a corresponding dialkyl carbalkoxymethanephosphonate with compounds having an activated olefinic double bond at 0 to 140 DEG C in the presence of strong basic catalysts, purifying the reaction products by distillation, and then subjecting them to hydrolysis or acidolysis with aqueous mineral acids at temperatures between 80 and 120 DEG C or with anhydrous hydrogen chloride at temperatures from 130 to 180 DEG C. The abovementioned oligocarboxyalkanephosphonic acids can be used as sequestering agents.
Patent GB-731957-A (GB)
Title: Improvements in or relating to electric transformers and the like apparatus
IPC: H01F27/36
Filed: 1952-10-22
Abstract: 731,957. Transformers and inductors. GENERAL ELECTRIC CO., Ltd., and LEE, F. Oct. 19, 1953 [Oct. 22, 1952], No. 26557/52. Class 38 (2). An electrostatic shield for a transformer or the like comprises a pair of conducting support rods 2, 3, parallelly arranged to one another and arranged axially of and external to the windings, a plurality of copper strip-like members 1 being arranged adjacent to one another to encircle the windings to form the shield, the ends of the strip-like members being secured to the support rods 2, 3, the support rods being spacedly held by a number of insulating members 4. Spacers 5 are secured to the strips 1 in the planes of the insulating members 4.