baber/WOPTO huggingface dataset:
Patent GB-326971-A (GB)
Title: Manufacture of new derivatives of 2:3-hydroxynaphthoic acid
Filed: 1929-02-26
Abstract: 326,971. Imray, O. Y., (I. G. Farbenindustrie Akt.-Ges.). Feb. 26, 1929. 2 : 3-Hydroxynaphthoic acid derivatives.-New derivatives of 2 : 3-hydroxynaphthoic acid are obtained by heating 2 : 6-dihydroxynaphthalene-3- carboxylic acid with ammonia, or primary or secondary amines. The product obtained as above, with ammonia can be converted into 6-bromo-2 : 3- dioxynaphthoic acid; hence the amino-group has replaced the oxy-group in the 6-position. The products are intermediates for dyestuffs. In examples, (1) 2 : 6-dioxynaphthalene-3-carboxylic acid is condensed with ammonia to give 6-amino- 2 : 3-oxynaphthoic acid; (2) the same acid is condensed with methylamine, to give 6-methylamino- 2 : 3-oxynaphthoic acid; and (3) with aniline, the products are 6 - phenylamino-2 : 3-oxynaphthoic acid, and 6-phenylamino-2 : 3-oxynaphthoic acid anilide, which are separated as barium salts; other amines which may be used are halogenated anilines, toluidines, xylidines, anisidines, and halogenated anisidines; (4) benzylamine is condensed with the production of 6-benzylamino-2 : 3- oxynaphthoic acid; (5) monomethylaniline gives the simple condensation products without the arylide of the acid.
Patent GB-1023933-A (GB)
Title: Open-top pack for rod-shaped articles,more particularly cigarettes
IPC: B65D75/68
Filed: 1965-02-15
Abstract: 1,023,933. Cigarette packages. H. J. FROHLING. Feb. 15, 1965 [Feb. 26, 1964], No. 6373/65. Heading B8C. Rod-shaped articles, e.g.cigarettes,wrapped in a foil wrapper 1 (Fig. 1) are placed in open top containers 12 and the open top closed by a seal 2 so positioned that it may be torn by a tear strip or tape 5 attached to the foil 1. In the form shown, the tear strip or tape 5 with a grip tab 6 is part of a continuous band stuck to the inside of paper-backed aluminium foil before the foil is cut into blanks 1. The foil is preferably severed at 8 so that when the tear string 5 is pulled the portion 4 of the foil is removed. Alternatively a weakened line may be provided to the right (in Fig. 1) of the seal 2.
Patent GB-118397-A (GB)
Title: Improvements relating to the Manufacture of Glass for Absorbing Ultra-violet Radiations.
Inventor: HADDAN REGINALD
IPC: C03C4/08
Filed: 1918-04-15
Abstract: 118,397. Haddan, R., (Corning Glass Works). April 15, 1918. Production of metal.-Relates to the production of glass capable of absorbing ultra-violet lays and as nearly colourless as possible, and consists in adding titanium oxide and an oxidizing salt to the glass composition. The titanium compound may be used in conjunction with cerium oxide &c., and nitre is added to prevent reduction of the oxides.
Patent GB-471430-A (GB)
Title: Improvements in and relating to time base circuits
IPC: H03K4/86
Filed: 1936-03-03
Abstract: 471,430. Generating circuits using gas-discharge tubes. BOSCH, F. J. G. VAN DEN. March 3, 1936, No. 6455. [Classes 39 (i) and 40 (v)] A. relaxation oscillator for use as a timebase device for a cathode-ray tube utilizes for discharging the usual condenser 5, a gas discharge tube 10 having an auxiliary grid electrode 17, connected to the cathode 11 by a resistance 18. Frequency-controlling signals are applied to the anode 9 through a condenser 15 and resistance 16. The saw tooth voltages are taken off across the tube 10 and applied to the deflecting-plates 13, 14 of the cathode-ray tube. The provision of the auxiliary electrode 17 raises the ignition voltage of the tube 10 and reduces its extinction voltage. The ignition potential may be further raised by adding 20 per cent of helium to the neon in the tube.
Patent GB-104785-A (GB)
Title: Improvements in Internal Combustion Engines.
Inventor: DAVIDSON JOHN
IPC: F02B33/14
Filed: 1916-05-05
Abstract: 104,785. Davidson, J. May 5, 1916. Values.-In an engine having a pair of pistons acted upon simultaneously by each impulse and moving together in the same direction, one of the pistons controls terminal . admission ports and has an extension working in a pump cylinder of larger diameter than the working cylinders. Fig. 1 shows a cross-connected engine having two pairs of cylinders, the pistons F controlling exhaust ports D, and the pistons E controlling inlet ports C. Annular charging-pumps are coaxial with the cylinders A. Admission and delivery to and from the pump spaces are controlled by a piston valve J having inlet Forts L and an annular delivery passage O, which discharges into chambers adjacent the inlet ports C. A modified valve having two annular delivery passages is described. A separate piston valve may be provided for each pump cylinder.
Patent GB-970413-A (GB)
Title: Improvements relating to magnetic amplifiers
Inventor: PETTIT RICHARD DAN
IPC: H03F9/06
Filed: 1960-02-24
Abstract: 970,413. Magnetic amplifiers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 15, 1961 [Feb. 24, 1960], No. 6501/60. Heading H3B. In a first arrangement of a magnetic amplifier of the flux-reset type, a reset winding 3 (Fig. 1) of a saturable reactor 1 is connected in series with an alternating current source 6, a first half wave rectifier D2, an adjustable control device R1 by which the magnitude of the current therethrough can be varied and a second halfwave rectifier X connected in the reverse direction as compared with the first rectifier D2, and there is provided resistive means R3 by which a unidirectional current source 7, 8 can be connected across rectifier X to pass a limited forward current therethrough but effectively substantially to prevent current from the alternating current source 6 from flowing through the unidirectional source. The current in the reset winding 3 is thereby limited in magnitude substantially to the magnitude of the said limited forward current. The load circuit includes a gate winding 2, a half-wave rectifier D1, an A.C. power source 5 and a load R. In a second arrangement, a first reset winding 20 (Fig. 2) of a saturable reactor is connected in series with at least part of one half 16 of a centre-tapped transformer secondary winding, a first half-wave rectifier X3, an adjustable current control device VR by which the magnitude of the current therethrough can be varied, and a second half-waye rectifier X connected in the reverse direction as compared with rectifier X3; and a second reset winding 21 of the saturable reactor is connected in series with at least part of the second half 15 of the centre tapped secondary winding, a third half-wave rectifier X4, the adjustable control device VR, and rectifier X which is connected in the reverse direction as compared with rectifier X4. Current flows in reset winding 20 during alternate half cycles of the supply 13, 14 and in reset winding 21 during the remaining half cycles of the supply. A unidirectional current (supplied via rectifier X1 or rectifier X2) of limited value is passed through rectifier X and the current in the reset windings 20, 21 is limited in magnitude substantially to the magnitude of the said unidirectional current of limited value. Windings 20, 21 form part of a full-wave magnetic amplifier and gate windings and load circuits (not shown) are coupled to these windings. Control device VR may be replaced by a transistor (Fig. 3, not shown) or by a thermionic valve circuit.
Patent GB-479566-A (GB)
Title: Improvements in electromagnetic phonographic reproducers
IPC: H04R11/08
Filed: 1936-08-28
Abstract: 479,566. Phonographic reproducers. DICTAPHONE CORPORATION. Aug. 28, 1936, No. 6581/37. Convention date, Oct. 4, 1935. Divided out of 464,739, [Group XXXVIII]. [Class 40 (iv)] In a sound-reproducer of the type having a carriage which supports an electrical reproducer unit provided with a stylus arranged to co-operate with a record, the reproducer unit comprises a horse-shoe magnet having polepieces which are spaced relatively to one another and are located one beyond the other in the direction of the longitudinal centre line of the magnet and cross said longitudinal centre line to form an air gap between their opposing substantially parallel faces, an armature comprising a magnetic member mounted in parallel relation to the opposing faces and extending into the air gap a predetermined distance and non-magnetic means supporting the armature for vibratory movement in a plane' parallel to the aforesaid opposing faces. The gap is formed between corresponding limbs of S-shaped laminated polepieces 77, 78 held against the ends of the limbs 73, 74 of a U- shaped permanent magnet 72. The polepieces are supported by off-set lugs 75, 76 of a supporting frame 70, Figs. 6, 7 which is formed with a flat plate 71 seated on the upper surface of the magnet 72, a portion 83 extending between the limbs, a flat portion 84 on which the armature support is mounted, and upwardly extending limbs 85 terminating in flat portions 86 clamped against the bottom surface of the magnet by screws 87. The stylus 21 is carried by an armature 88 in the form of a flat plate which oscillates vertically in the gap and is carried by two U-shaped aluminium members 90, 91 which have a separating piece 93 of fibre between their unconnected ends and are clamped between a steel plate 92 and the flat portion 84 of the frame 70 by a screw 94. The magnetic assembly which is held in the casing by a bottom plate 47 engaging an inturned flange 40 on a vertical wall 38 and secured by a screw 48 to the front wall of the upper part 34 of the casing, is resiliently supported relatively to the walls of the casing by resilient pads 98, 99 and a strip 100 of material disposed between the outer surface of the magnet and the top and vertical walls of the casing. Dust and small particles are excluded from the magnetic assembly by a small piece 50 of fabric covering a hole 49 through which the stylus 21 extends. Separate coils 82 are mounted on the arms of the S-shaped polepieces and the ends of the leads are taken to insulated terminal members 97 mounted on the vertical portion 83 of the supporting frame. 70. Specification 464,739 is referred to.
Patent GB-491539-A (GB)
Title: Manufacture of stiff textile fabrics stable to laundering
IPC: D06M17/06
Filed: 1937-03-08
Abstract: 491,539. Compound fabrics. I. G. FARBENINDUSTRIE AKT.-GES. March 8, 1937, No. 6776. Convention date, March 6, 1936. [Class 140] Stiffened textile fabrics are made by coating or impregnating a layer of textile fabric with an aqueous emulsion of a film-forming compound, other than a vulcanizable compound and a polyvinyl ester, obtainable by polymerizing one or a mixture of monomeric compounds containing the grouping CH2-C< (other than a vinyl ester), or by acetalizing polyvinyl alcohols, and uniting the so-treated layer under pressure or pressure and heat with one or more layers of textile fabric which have not been so coated or impregnated. The coated &c. layer may be dried before union. Film-forming compounds used are polyvinyl ethers, polyvinyl thioethers and mixed vinyl polymerizates. The emulsion may contain softeners, e.g. tricresylphosphate or phthalic acid esters, or a wetting agent. The fabrics to be united may be previously moistened. In an example a solution of polyvinyl isobutyl ether in benzene is dispersed in an aqueous solution of sodium oleate, the resulting emulsion is applied to both sides of a cotton fabric, the cotton fabric is covered on each side with a layer of fabric, and the assembly is dried and hot pressed. The film formed has a coarse structure having very fine channels which allow of transpiration. Specification 426,265, [Group V], is referred to. The Specification as open to inspection under Sect. 91 comprises the use, as filmforming compounds, of polyvinyl halides (e.g. chlorides), polyvinyl esters, a mixed polymerizate from vinyl chloride and an acrylic ester or vinyl acetate, cellulose derivatives (e.g. acetate or ether) and rubber compounds. In examples are used aqueous emulsions of (1) polyvinyl acetate, (2) acrylic acid methyl ester, (3) a mixed polymerizate from styrene and acrylic acid butyl ester, (4) benzyl (or ethyl) cellulose in benzene and tricresyl phosphate, (5) chlorinated rubber in highly chlorinated naphthalene and toluene, and oxyethylated oleyl alcohol, (6) acetyl cellulose in chloroform and phthalic acid dimethyl ester in sodium oleate, (7) polyvinyl isobutyl ether in benzene in sodium oleate, (8) a polymerizate from a mixture of vinyl acetate and acrylic acid nitrile in aqueous polyvinyl alcohol, and (9) nitro-cellulose in toluene, and water-soluble methyl cellulose in water, and ethyl acetate with tricresyl phosphate. It is stated that the coated &c. layer may be in the " partly dry state. This subject-matter does not appear in the Specification as accepted.
Patent GB-634023-A (GB)
Title: Improvements relating to pillow-slips and the like
IPC: A47G9/02
Filed: 1948-03-06
Abstract: 634,023. Pillow slips. ASHTON BROS. & CO., Ltd., and WEST, A. S. March 6, 1948, No. 7014. [Class 52 (iv)] A pillow slip A or the like has one or both ends open but secured by stitching C or other means so as to leave a gap E for insertion of the pillow F when compressed.
Patent GB-1381962-A (GB)
Title: Method and apparatus for counting work cycles of electrically driven  devices
IPC: G06M1/10
Filed: 1972-02-15
Abstract: 1381962 Counting apparatus CATERPILLAR TRACTOR CO 15 Feb 1972 [17 Feb 1971] 7014/72 Heading G4D The number of operations of a machine tool or the like are counted by detecting variations in the current supplied to 'a motor driving the machine during an operating cycle and not concomitant with variations in the supply voltage. As particularly applied to an inertia welding tool (Fig. 1, not shown) the motor 17 takes heavy current while a flywheel (14) is being run up. This current pulse is detected by a current transformer 35 in one phase of the supply ; the current transformer output is rectified and smoothed to provide a first voltage E 1 . A second voltage E 2  is derived from the supply voltage and the difference between E 1  and E 2  is applied by a differentiator 62 and amplifier 61 to a Schmitt trigger 67; this arrangement ensures supply voltage fluctuations are not counted. The Schmitt feeds a relay 91 whose contacts 93 thus close once per cycle of the tool, feeding a pulse to a counter 29. The voltages E 1  and E 2  are both adjustable so that the apparatus can be set up, for a particular tool, to be insensitive to small current fluctuations. In an alternative arrangement (Fig. 3, not shown) suitable for use where each cycle contains a plurality of current pulses, the Schmitt trigger is replaced by a monostable circuit having a period slightly less than the cycle length so that it can only respond once to each cycle.
Patent GB-123884-A (GB)
Title: Improved Lathing for Reinforcing Concrete, Plaster and the like.
Inventor: RINGS FREDERICK CLEMENT CHRIST
IPC: E04F13/04
Filed: 1918-04-26
Abstract: 123,884. Rings, F. C. C. April 26, 1918. Lathing; reinforced concrete.-Lathing for reinforcing concrete, plaster, &c. consists of flat sheets of metal or other material formed with rows of flanged rectangular perforations, adjacent rows breaking joint and the flanges thereof being on opposite sides of the sheet. The material between the rows is left straight to resist tension. In the upper portion of the Figure, the full lines shows slits and the dotted lines show bends. Reference has been directed by the Comptroller to Specification 16375/97.
Patent GB-196768-A (GB)
Title: Improvements in and relating to candle dipping machines
IPC: C11C5/02
Filed: 1922-03-09
Abstract: 196,768. Day, W. H., and Sanrey, R. G. March 9, 1922. Candles.-A candle-dipping machine comprises a number of counterbalanced wick-frames arranged round an overhead horizontal framework that can be rotated so as to bring each wickframe in turn over the dipping tank. Means are provided for adjusting the length of the wicks in each frame, and preferably the wick thread is continuous throughout each frame, and a gauge plate is provided on each frame for surfacing the candles. In the machine shown, the upper members 9 of the wick-frames are detachably secured by hooks 10 to carriers 8 on the outer ends of pairs of cords 6 which run over pulleys 5 on the rotatable. framework 2, 3, 4, and which carry counterweights 7. The lower members 13 of the wick frames are supported the desired distance from the upper members 9 by arms 17 adjustable on rods 18 that are temporarily hung from knobs 12 on the hooks 10 until the wick is threaded between the hooks 14 of the members. The gauges, consisting of plates with circular holes the size of a finished candle, are detachably secured to the members 9. Each frame is dipped in the tank 16 by the operator pulling down the knobs 10. It is then raised bv its counterweight 7, and turned aside to cool while the remaining frames are dipped.
Patent GB-799205-A (GB)
Title: Improvements in or relating to the production of titanium pigments
Inventor: WERNER ALFRED J
IPC: C09C1/36
Filed: 1956-03-06
Abstract: Titanium pigments are produced in a readily dispersible condition by dry-grinding in the presence of from 0.005 to 0.5 per cent of a trialkanolamine and from 0.05 to 5 per cent of an aerogel.  The trialkanolamine may be added as an aqueous solution; the aerogel which may be a silica aerogel is preferably added just prior to the amine.  The grinding process may be carried out in a ball-, pebble- or rod-mill or the like, but the process is particularly useful in fluid energy mills.  The examples all refer to grinding titanium dioxide pigments in a "Micronizer" (Registered Trade Mark) fluid energy mill in the presence of triethanolamine and a silica aerogel. Aerogels of oxides of aluminium, titanium and zirconium may also be used. Specifications 432,191, [Group II], 464,836 and 702,867 are referred to.ALSO:Titanium pigments are produced in a readily dispersible condition by dry-grinding in the presence of from 0.005 to 0.5 per cent of a trialkanolamine and from 0.5 to 5 per cent of an aerogel.  The trialkanolamine may be added as an aqueous solution; the aerogel which may be a silica aerogel is preferably added just prior to the amine.  The grinding process may be carried out in a ball-, pebble-, or rod-mill or the like, but the process is particularly useful in fluid energy mills.  The examples all refer to grinding titanium dioxide pigments in a "Micronizer" (Registered Trade Mark), fluid energy mill in the presence of triethanolamine and a silica aerogel.  Aerogels of oxides of aluminium, titanium and zirconium may also be used. Specifications 432,191, 464,836 and 702,867 [both in Group III] are referred to.
Patent GB-1067108-A (GB)
Title: Wig manufacture
IPC: A41G3/00
Filed: 1966-02-17
Abstract: 1,067,108. Wig manufacture. M. MARDER. Feb. 17, 1966, No. 7078/66. Heading A4V. A method for constructing a hair assembly, used in the manufacture of wigs comprises applying a number of individual hairs to an adhesive strip, with the hairs preferably positioned at right angles to the strip and projecting beyond the strip, and thereafter applying a second strip to the first. or folding over the first strip lengthwise so that portions of the hairs are held between portions of the strip or strips stuck to each other. Preferably each strip is folded about its centre line so that only the central portion of each hair adheres to the strip, and a tape may be folded lengthwise about the strip or strips and secured to them by stitching which passes through two thicknesses of each strip, and two thicknesses of tape.
Patent GB-755128-A (GB)
Title: An electrical cooking pot or vessel
IPC: A47J27/00
Filed: 1954-03-11
Abstract: 755,128. Electrically heated cooking vessels. HAMILTON, J. March 10, 1955 [March 11, 1954], No. 7096/54. Class 39(3). A thermostatically controlled electric cooking vessel comprises a pot 10 removably contained in a casing 11, the spaces between the pot and the casing and between the lid sections 15, 16 being packed with fibre glass. A heating element 21 located in a fireclay moulding is secured to the bottom of the pot by a metal plate 26 through which pass rods 27 attached at the top to a transverse plate 29 screwed to a fibre ring 13. The element is controlled by a thermostat 22 fixed to the pot by a wire or metal band 32 and an indicator lamp 23 for showing when the current is switched on is visible through a window (not shown) in the casing 11. A heat insulating. fibre ring 18 separates the marginal portions of the lid sections and a further fibre ring 12 is fixed to a flange 10<SP>1</SP> of the pot. The ring 13, which is secured to the top of the inner wall of the casing 11, forms a seat for the ring 12 and constitutes a guide for the pot when removing or lowering it into the casing.
Patent GB-215894-A (GB)
Title: Improvements in toy helicopters
IPC: A63H27/127
Filed: 1923-03-12
Abstract: 215,894. Brown, L. W. March 12, 1923. Flying toys.-A toy helicopter comprises an elongated body 10, at one end of which are two propellers 12, 29, one fixed to the body 10 and the other rotatable with respect to the body. The pitch of each propeller is so adjusted that when they are rotated in opposite directions by an elastic motor both propel the device in a forward direction. The body 10 is constructed of a paper or celluloid tube of spiral formation furnished at its rear end with a two-ply vane 11, the plies of which embrace the tube. Adjacent to the other end is fixed the propeller 12. On the forward end is also mounted a conical cap 19 through which extends a stem 21, the lower end of which is formed with an eye 22 through which is passed one end of an elastic loop 23 The other end of the loop 23 is held by a clip 24 having hooks 25 which clip over the end of the tube 10. The propeller 12 is formed of a piece of sheet material shaped as shown in Fig. 4. Projecting portions 13 are bent inwardly to an overlapping position, and the tubular member 10 is passed through openings 17 and through a central aperture formed with tangs 16 which are adhesively or otherwise secured to the tube 10. Tangs 18 extending from the periphery of the openings 17 are also secured to the tube 10. The blades 14 are so positioned that they are given the required pitch by the action of bending inwards the projections 13. The second propeller 29 is similarly formed from a piece of sheet material shaped as shown in Fig. 3. A cork member 27, Fig. 2, is passed through a central rectangular aperture 32 and the projecting portions 30 are bent to overlap one another. The stem 21 is then extended through the overlapping openings 33 and through the member 27, its free end being bent over and embedded in the cork. A conical bearing 34 is interposed between the cap 19 and the propeller 29. Besides acting as the hub of the propeller 29, the member 27 also prevents damage to objects with which the device mav collide. The elastic 23 is tensioned by holding the body 10 and rotating the propeller 29.