baber/WOPTO huggingface dataset:
Patent GB-404413-A (GB)
Title: Improvements in the manufacture and production of azo dyestuffs
IPC: C09B45/14
Filed: 1932-10-03
Abstract: Azo dyes and metal compounds thereof are manufactured by coupling diazotized o-aminophenols or o-aminonaphthols containing at least one halogen atom or nitro or sulpho group, or a combination of these substituents, with a tetrahydro-b -naphthol hydrogenated in the unsubstituted nucleus, and, if desired, treating the resulting dyestuff in substance or on the fibre with agents supplying metals, e.g. chromium, copper, iron, nickel, cobalt, manganese, titanium and vanadium.  Particularly suitable diazo compounds are those containing several of the substituents mentioned, whilst further substituents may be present.  Examples describe the manufacture of the following dyestuffs: (1) 4-nitro-2-aminophenol-6-sulphonic acid --> tetrahydro-b -naphthol; the product dyes wool brown shades, which by after-chroming yield coffee-brown shades; by boiling the dyestuff in substance with chromium salts, e.g. chromium formate, fluoride or sulphate, there is obtained the chromium compound which dyes wool dark brown shades and is also suitable for dyeing leather or silk; the diazo component may be replaced by 6-nitro-2-aminophenol-4-sulphonic acid, the product yielding similar dyeings; (2) picramic acid --> tetrahydro-b -naphthol; the product is heated in ethyl alcohol solution with chromium formate and the chromium compound is precipitated by adding water; the chroming may also be carried out in the absence of a solvent, or in aqueous alkaline solution by boiling with alkaline chromite solution; the copper compound is prepared by heating the dyestuff with a solution of tetrammine cupric sulphate or of cupric acetate, whilst the compounds with other metals such as iron, nickel, cobalt, manganese, titanium and vanadium may be similarly prepared; the dyestuff and its metal compounds are suitable for colouring lacquers or varnishes; (3) picramic acid --> 2-hydroxytetrahydronaphthalene-3-sulphonic acid; the product dyes wool brown shades which yield olive shades by after-chroming, whilst the chromium compound prepared in substance gives similar dyeings; the diazo component may be replaced by 4-nitro-2-aminophenol-6-sulphonic acid, the product dyeing wool brown shades which yield reddish-brown shades by after-chroming; (4) nitrated 1-amino-2-naphthol-4-sulphonic acid --> tetrahydro-b -naphthol; the product dyes wool brown shades which yield dark brown shades by after-chroming, a similar dyeing being obtained by dyeing in the presence of ammonium bichromate; (5) 5-nitro-2-aminophenol --> tetrahydro-b -naphthol; the product, chromed as in (2), dyes nitrocellulose lacquers grey to black shades; the diazo-component may be replaced by 4-chloro-2-aminophenol, the chromed product dyeing nitrocellulose lacquers bordeaux red shades.  The Provisional Specification comprises the use, as diazo components, of o-aminophenols and o-aminonaphthols in general.
Patent GB-1153874-A (GB)
Title: Improvements in or relating to devices for Supplying Ingredients in the preparation of Concentrated Feed Mixtures for Cattle, Pigs, Sheep, and Poultry
Inventor: ALWERUD SVEN THOMAS
IPC: B65G33/00
Filed: 1966-06-20
Abstract: 1,153,874. Feeding feed mixtures. S. T. ALWERUD. 20 June, 1966, No. 27488/66. Heading B8A. An ingredient for the preparation of feed mixtures is supplied from hopper 2 by two screws 8 and 9 which intermesh, the screws being of opposite hand and driven in opposite directions by gears 6, 7 to deliver the material at 50.
Patent GB-1028110-A (GB)
Title: Improvements in or relating to the manufacture of insulated electrical conductors
IPC: H01B7/02
Filed: 1964-07-03
Abstract: 1,028,110. Insulated conductors. SIEMENSSCHUCKERTWERKE A.G. July 3, 1964 [July 4, 1963], No. 27648/64. Heading H1A. A liquid organic insulating material is incorporated in hot synthetic thermoplastic material of the same dielectric constant, which is then extruded in layers around an electrical conductor. On cooling, liquid exudes and fills any voids between layers. The outer layer of insulation may contain less liquid than the others, to inhibit external erudation. The synthetic plastics material may be a polyolefin, e.g. polyethylene or polypropylene, or may be a polyvinyl halide, e.g. polyvinyl chloride. The liquid additive may comprise a paraffin hydrocarbon or an alkaryl or aralkyl hydrocarbon. Examples of formulations are described.
Patent GB-884745-A (GB)
Title: Improved method and machine for cutting spiral bevel and hypoid gears
IPC: B23F9/10
Filed: 1958-12-24
Abstract: 884,745. Gear-cutting. GLEASON WORKS. Dec. 24, 1958 [Dec. 30, 1957], No. 27684/61. Drawings to Specification. Divided out of 884,741. Class 83 (3). A method of cutting a non-generated spiral bevel or hypoid gear having helicoidal tooth sides comprises rotating the cutter and, in time with the rotation, effecting a relative reciprocation between the cutter and work in the direction of the cutter axis, the time relation being such that each blade cuts during a differential feed-stroke and that there is one or more reciprocations while a gap in the blades is opposite the gear and while the gear is indexed. The machine is as described in Specifications 884,741 and 884,744. Specification 818,888 also is referred to.
Patent GB-225998-A (GB)
Title: Improvements relating to collars, for personal wear
IPC: A41B3/02
Filed: 1923-11-05
Abstract: 225,998. Schofield, W. Nov. 5, 1923. Collars, linen and like. -To provide adjustment, two or more holes A<1>, A<2> are made close together in one or both flaps of collars, the holes being preferably round and made small for use in connection with a stud having a detachable head.
Patent GB-412461-A (GB)
Title: Improvements in cracking petroleum hydrocarbons
IPC: C10G9/00
Filed: 1933-10-09
Abstract: <PICT:0412461/III/1> In a cracking process of the type described in Specification 253,562, [Class 32], in which oils are vaporized, cracked in the vapour phase, and the cracked vapours immediately cooled by quenching them with cool oil, the quenched products are blended with the liquid residues from the vaporization step and the mixtures obtained is vaporized and fractionated to give a final product.  Crude oil is pumped through a line 12 into a tower 5 and the reflux from the tower is passed through a line 16, and preheating coil 17 into an evaporator 3.  The vapours formed are cracked in coils 25 in a furnace 2 and immediately cooled in an arrester 27 by admixture with cool condensate from the tower 5 supplied through a pipe 29, tank 6, and pipe 28.  The cool products and residues from the evaporator 3 are blended and flash vaporized in a drum 4 and the vapours evolved are led to the tower 5 from which the desired fractions are led off through lines 46, 49 and condensed in coolers 8, 9.
Patent GB-151936-A (GB)
Title: Improvements in regenerative martin furnaces
IPC: F27B3/26
Filed: 1920-10-01
Abstract: 151,936. Schmieding, P. Oct. 1, 1920. Regulators.-In a regenerative open-hearth furnace, extensions g, g' of the main gas regenerator chambers are provided wherein the cold gas receives a preliminary heating. Reference has been directed by the Comptroller to Specifications 2508/91 and 114,222.
Patent GB-1397301-A (GB)
Title: Coin-operated apparatus
IPC: G07F5/00
Filed: 1972-06-15
Abstract: 1397301 Coin-operated apparatus A SHAW 15 June 1973 [15 June 1972] 27935/72 Addition to 1262311 Heading G4V The apparatus of the parent Specification has been modified by providing means for preventing or prohibiting the entry of a coin into the first coin mechanism while entry of coins into the second coin mechanism is permitted. In the embodiment shown a single coin insertion slot 11 is provided for both coin mechanisms 2 and 5, a gate 12 actuated by actuator 13 determining to which coin mechanism an inserted coin is directed. A further optional modification is the provision of a counter/recorder 3 for the coins passing through the coin mechanism 2, in which case the separate coin stores 4, 7 can be merged. In another embodiment (Fig. 1, not shown) a shutter (8) normally closing the insertion slot (6) of the second coin mechanism is moved to open this slot and close the slot (1) of the first coin mechanism by actuator (10) after the insertion of a predetermined number of coins into the first coin mechanism. Alternatively an indicator is used to prohibit insertion of coins into slot (1) when slot (6) is open. The apparatus may as described in the parent Specification be used for controlling a gaming machine or may control a vending or service providing machine the coins entered into the first coin mechanism being collected separately for a special purpose, e.g. the payment of a tax.
Patent GB-1078450-A (GB)
Title: Improvements in and relating to filtering devices
IPC: B01D35/143
Filed: 1966-06-23
Abstract: 1,078,450. Filter. N. O. ROSAEN, B. O. ROSAEN, A. A. MICHIGAN and O. E. ROSAEN. June 23, 1966 [April 4, 1966] No. 28021/66. Heading BID. A liquid filter comprises a filter housing with inlet 20 and outlet 22 and containing a rotatable structure consisting of two semi-cylindrical filter elements 58, 60 mounted on and separated by a partition 26 sealingly engaging the housing wall, whereby one element 58 is located in the filtering portion 54 of the housing while the other element 60 is located in portion 56 where it is cleaned. As pump 23 forces liquid through element 58, the element clogs with solids, and the rising upstream pressure urges a spring loaded piston 74 (Fig. 1, not shown) to the right, thereby rotating a shaft (88) which carries an indicating pointer (92) and a cam, (90) outside the housing (Fig. 5, not shown). Cam (90) operates a switch (96) to start the motor 97, which rotates the structure so that clean element 60 replaces clogged element 58 in the filtering position. A further cam-switch arrangement 100, 104 on the vertical drive shaft of the structure stops motor 97 after 180 degrees of rotation. In housing portion 56 is a nozzle 116 which receives filtered liquid, delivered from the filtrate side of the housing through passage 108 by an auxiliary pump (114) whose operation may be continuous or intermittent controlled, for example, like motor 97. Nozzle 116 washes solids from the external, upstream, side of the element and into sump 122. In addition (Fig. 1), a chamber 124 on the downstream side of the filter element in housing portion 56 communicates with an external housing (130) divided by an expansible bladder (136), and switch 104 actuates a solenoid valve (144) to deliver compressed air to one side of the bladder, forcing liquid on the other side back through chamber 124 to backwash the filter element.
Patent GB-987464-A (GB)
Title: The conversion of thermal energy into electronic energy
IPC: H02N3/00
Filed: 1962-07-20
Abstract: 987,464. Discharge apparatus. SIEMENSSCHUCKERTWERKE A.G. July 20, 1962 [July 27, 1961], No. 28123/62. Addition to to 971,759. Heading H1D. [Also in DivisionH2] In a method of generating electricity, a finely-divided substance consisting of, or including, a metal, a metal vapour or a metal compound, is heated by an exothermic reaction between oxygen and another material, and then becomes ionized at a first electrode 5 downstream of the reaction chamber 1, the ions giving up their charge at a collector electrode 6 downstream of the first electrode so that a potential difference is set up between the two electrodes. As shown, chemically reacting gases are supplied to chamber 1 through tubes 2, 3 and a metal vapour, or a solution of carbonates or chlorides of Cs or K, atomized with ultrasonic energy, is introduced through tube 4. Alternatively, a pulverized metalcontaining substance may be introduced in a gas under pressure, which gas may be one of the chemically-reacting gases. The first electrode is formed as a Laval nozzle at the outlet of chamber 1 while the collector comprises baffle plates 6 or concentric cylinders. The heat of the gases leaving collector 6 may be utilized in further energy converters or the metal-containing substance may be recirculated through a closed circuit. The speed of the gaseous mixture may be periodically varied or reversed by means of acoustic oscillations or mechanical control flaps to generate an alternating voltage.
Patent GB-1090227-A (GB)
Title: Tape handling system
IPC: G11B15/20
Filed: 1965-07-02
Abstract: 1,090,227. Feeding record tapes. NAVIGATION COMPUTER CORPORATION. July 2, 1965 [Aug. 11, 1964], No. 28154/65. Heading G5R. A tape feed motor 22 is selectively energized according to the position of a tape sensing arm 26 which is pivoted about the motor shaft 23. As shown, a magnet 31 moves with the sensing arm 26 and, in a certain range of positions, closes the contacts of a reed switch 32.
Patent GB-1531577-A (GB)
Title: Anode structure for electrolysis
IPC: C25B13/08
Filed: 1976-07-07
Abstract: 1531577 Anode-diaphragm structure TOKUYAMA SODA KK 7 July 1976 [7 July 1975] 28278/76 Heading C7B A curved anode structure, for electrolysis of alkali metal halide (e.g. NaCl to produce chloralkali), sulphate, nitrate or phosphate, or HCl, H 2 SO 4 , HNO 3  or H 3 PO 4 , or electrohydrodimerisation of acrylonitrile, comprises a curved anode and a film of polymer containing a cation exchange group laminated e.g. by melt adhesion of the polymer on one surface of the anode; alternatively the polymer may be laminated by directly forming a film thereof on the one surface e.g. by electrostatic attraction or coating, dipping or spraying a dispersion in a viscous solution of the powdered polymer. The polymer is preferably a fluorine-containing cation exchange resin such as tetrafluoroethylene and CF 2  = CF OCF 2  CF (CF 3 ) OCF 2  CF 2  - SO 2 F. The anode may be in the form of curved network, lattice, porous sheet, rod, cylinder or finger-type structure; of Ti coated (on the other surface) with 2RUO 2 . TiO 2  or Pt - Ir, or of C or magnetite. Optionally an anion exchange or neutral polymer layer may be present at least on one surface or interior of the cation exchange membrane, preferably by cross-linking polymer chains.
Patent GB-603650-A (GB)
Title: Improvements in electrical contact devices for use in pressure operated instruments
IPC: G01L19/08
Filed: 1945-10-26
Abstract: 603,650. Actuation of switches. FRANCIS, A., GODDEN, C. S., and COLEY ELECTRICAL INSTRUMENTS, Ltd. Oct. 26, 1945, No. 28288. [Class 38 (v)] [Also in Group XIX] A Bourdon gauge type of pressure-operated instrument comprises a pair of electrical switch contacts of which one contact is secured directly to the Bourdon tube and the other contact is mounted for adjustment by a control member which is operatively coupled to this second contact. A flat plate 28, Fig. 1, forms one contact of the switch and is mounted on a resilient arm 29, which is secured to the free end of the Bourdon tube 13 by an electrically insulating glue or, if the tube is suitably insulated, the arm 29 may be brazed thereto. The second contact 32 is of domed form and is adjustably mounted in a support 33 carried by an arcuate spring 34, the other end of which is secured to an insulated support mounted on an arcuate lever 36. The support 33 abuts against an insulating block 38 carried by the lever 36 which has a pivotal mounting 37 and may be moved to adjust the domed contact 32 by rotating a spindle 44 connected to the end of the lever 36 by a pin-and-slot mechanism. The spindle 44 carries a knob and pointer with which is associated a setting scale (not shown) which is separate from the main scale of the instrument, the latter being associated with a pointer on a spindle 19 driven by the end of the Bourdon tube through a toothed quadrant mechanism. In a modification, Fig. 3, the contact 32 is secured to a slidable mounting 58 which is loaded by a light spring and carried on an insulated base 54 having a pivot 37, adjustment being effected by a system of levers interconnected by pin-and-slot mechanisms. The gauge may be used to effect a control of the pressure or temperature which it indicates.
Patent GB-710301-A (GB)
Title: Soluble vat dyes of the acridone series
IPC: C09B9/02
Filed: 1951-12-03
Abstract: Leuco-sulphuric esters of anthraquinone acridones are obtained by treating the corresponding 1-arylamino-2-carboxyanthraquinone with iron, zinc, or cadmium and the sulphur trioxide addition product of a tertiary amine of dissociation constant at least 1 X 10-7.  An inert solvent may be present.  In examples, chlorsulphonic acid is added to a mixture of chlorobenzene and (1) trimethylamine, (2) triethylamine, or (3) tripropylamine, to form the sulphur trioxide addition products which are then reacted without separation with 1-(b -naphthylamino)-2-carboxyanthraquinone and one of the three metals. Also in examples, chlorsulphonic acid is added to triethylamine in chlorobenzene and the product reacted with zinc dust and (4)1-(p-anisidino)-2-carboxy-anthraquinone, (5) 1-(m-toluidino)-2-carboxy-anthraquinone, (6) 2-carboxy-1.2\sv-dianthrimide.
Patent GB-1412240-A (GB)
Title: Process for the preparation of 3- o,o-diethyldithiophosphorylmethyl -6-chlorobenzoxazolone
IPC: A01N57/16
Filed: 1974-06-26
Abstract: 1412240 Preparing 3-10,0-diethyldithiophosphorylmethyl - 6 - chloro - benzoxazolone RHONE-POULENC SA 26 June 1974 [28 June 1973] 28389/74 Heading C2P The compound is obtained by condensing an alkali metal- or the ammonium salt of 0,0-diethyldithiophosphoric acid, formaldehyde and 6-chloro-benzoxazolone in a single step in the presence of methane sulphonic acid. The reaction is preferably carried out in pure methane sulphonic acid as solvent and some water may be present. The formaldehyde may be used in aqueous solution or as paraformaldehyde and preferred condensation temperatures are 5 to 20 C. The product has insecticidal and acaricidal properties and may be used in admixture with an inert conventional diluent or adjuvant.
Patent GB-883805-A (GB)
Title: Process for the production of eupolyoxymethylenes
IPC: C08G2/00
Filed: 1960-08-16
Abstract: Eupolyoxymethylenes are prepared by polymerizing anhydrous formaldehyde in an inert liquid organic medium using, as catalyst, a finely-divided alkali or alkaline earth hydroxide and/or oxide and/or peroxide.  Specified catalysts are calcium, rubidium, sodium, potassium, lithium, barium and calcium hydroxides, sodium oxide, sodium peroxide and barium peroxide.  Anhydrous benzene is the preferred organic medium.  The formaldehyde may be used mixed with a carrier gas, e.g. nitrogen or air.  Plasticizers, e.g. propylene glycol, and stabilizers, e.g. urea and hydrazine, may also be present.  Specification 744,336 is referred to.
Patent GB-520882-A (GB)
Title: Improvements in and relating to amplifier circuits
IPC: H01J43/02
Filed: 1938-09-30
Abstract: 520,882. Thermionic valve circuits; electron multipliers. VEREINIGTE GLUHLAMPEN UND ELEKTRIZITATS AKT.-GES. Sept. 30, 1938, No. 28452. Convention date, Sept. 30, 1937. [Classes 39 (i) and 40 (v)] In an amplifier circuit containing one or more electron-multiplier tubes (i) the no-load voltage on the multiplier electrodes exceeds 50 volts referred to the primary cathode in the first multiplier tube and with respect to the previous multiplier electrode for succeeding tubes, the no-load voltage being less than the working voltage, and (ii) the direct current from the multiplier electrode or electrodes is fed to the anode or anodes of an amplifier valve or valves in the circuit. A mains rectifier also supplies to these valves in parallel with the above supply; a saving in current is thereby effected. The multiplier tubes 1, 1<SP>1</SP>, 1<SP>11</SP>, Fig. 2, are arranged in cascade, the anode 5 of 1 being connected to the grid 31 of 11 ; the anode 5<SP>11</SP> of the last multiplier tube 1<SP>11</SP> is connected to the grid of the valve 20 whose anode is connected to the output-circuit terminal 0 and over resistance 31 and decoupling coils 19, 19<SP>1</SP>; 19<SP>11</SP> to the multiplier electrodes 6, 6<SP>1</SP>, 6<SP>11</SP>. The potential of the electrodes is derived from the auxiliary source V, the resistance 29 and the valve 20 forming a divider for the potential applied to the multiplier electrodes. In a modification (Fig. 3, not shown) a separate potential source is used for the multiplier electrodes and a stabilizing loading resistance 32 may be used in shunt to the valve 20 ; a loud speaker coil may be used as the resistance 32 or 29, Fig. 2. To compensate in the multiplier tubes for variations in the anode current/grid voltage characteristic following change in grid bias and consequent change of current to the multiplier electrode, the multiplier electrode 6, Fig. 4, besides connection to the positive line V is also connected to the cathode through resistance 33 so that the cathode resistance receives current from the electrode 6 ; drop in multiplier current will reduce the grid bias and raise primary current; the arrangement of such compensative multiplier tubes in an amplifier circuit is shown in a further Figure. The grid potential in the tube shown in Fig. 4 is determined by the connections to the supply V over the two resistances 7, 34.
Patent GB-1019251-A (GB)
Title: Improved ladies' swimming caps and method for producing same
IPC: A42B1/12
Filed: 1962-07-25
Abstract: 1,019,251. Moulding by dipping. B. M. ROTTI. July 25, 1962 [July 31, 1961], No. 28560/62. Heading B5A. [Also in Division A3] A bathing cap is moulded in a latex bath 18 on a former 19 shaped to produce a cap having at least one protrusion such as the protrusion 12, Fig. 2, not shown, to accommodate the wearer's piled - up hair. The protrusion has at least one location spaced from the basic dome shape of the cap by at least eight, and preferably fifteen, millimetres. The former is repeatedly dipped until it carries a layer at least one, preferably one-and-a-half millimetres, thick. The former is shaped so that adjacent a concavity such as 16 there is an upwardly sloping surface 20 to allow air bubbles to escape.
Patent GB-1104717-A (GB)
Title: Push type connectors and terminal boards
IPC: H01R31/02
Filed: 1965-07-06
Abstract: 1,104,717. Plug boards; two-part couplings. MOLEX PRODUCTS CO. 6 July, 1965, No. 28617/65. Heading H2E. A terminal assembly comprises a supporting board 70 having an opening which can receive a number of connectors 20, each of which makes contact with its adjacent connector. The opening has sides having a repeating pattern of recesses, each recess being shaped to receive a connector. Each connector is formed from sheet metal and is bent into an approximate U-shape, one arm of the U having an extension 28 and 32 to grip a cable and the other arm 54 of the U being resiliently movable towards and away from the first arm so that when two connectors are inserted in adjacent recesses of the board 70, the arm 54 of one engages the back of the adjacent connector. The connectors may have protuberances 64 which snap behind the lower surface of the board and lock the connector in position. In a second embodiment (Fig. 7, not shown) the movable arm of the U is formed with two forwardly facing flanges which make line contact with the adjacent connector instead of surface contact as in the first embodiment. In a further embodiment (Figs. 10 and 11, not shown) the movable part of the connector is formed by bending round side flanges of the first arm. In the embodiment of Fig. 12 (not shown), the opening in the board is shaped similarly on opposite sides of the longitudinal centre line but offset longitudinally, the connectors in this case being inserted so that they lie opposite each other across this central line but offset so that each connector engages a part of two opposite ones. With this arrangement a bus bar may be detachably secured to the board to extend along the longitudinal central line. The connectors may generally be inserted from either side of the board, however in one embodiment described the opening takes the form of a blind hole.