baber/WOPTO huggingface dataset:
Patent GB-918273-A (GB)
Title: Improvements in or relating to ignition circuit arrangements for fluorescent tubes
IPC: G01V3/14
Filed: 1959-09-15
Abstract: 918,273. Supply systems for space discharge lamps. SIEMENS - SCHUCKERTWERKE A.G. Sept. 15, 1959 [Sept. 29, 1958], No. 31472/59. Class 38 (4). [Also in Group XXXVI] In a circuit for starting and operating a fluorescent tube in which a rectifier 4 is arranged in series with a choke 7 to unidirectionally magnetize the choke and increase the heater current during the starting period, the rectifying properties of the rectifier are arranged to be substantially reduced when a starting current of prolonged duration flows through the choke. The rectifier 4 may be shunted by a non-temperature dependent resistor 10. The rectifier may be mounted on a carrier such that the heat loss from the rectifier is allowed to raise the temperature of the carrier only to a predetermined extent in order to lower the blocking resistance of the rectifier.
Patent GB-1435893-A (GB)
Title: Treatment of textile materials
IPC: D06L4/75
Filed: 1972-07-05
Abstract: 1435893 Treating textiles IMPERIAL CHEMICAL, INDUSTRIES Ltd 29 May 1973 [5 July 1972 11 Sept 1972] 31477/72 Heading D1P A textile material which has been impregnated with a solution, suspension or emulsion of a treatment agent in a hydrocarbon or halogenated hydrocarbon solvent and then steamed to remove the solvent, is treated with at least one aqueous medium containing a bleaching agent and/or a bleaching adjuvant to create thereon an aqeous solution of a bleaching agent and a bleaching adjuvant, steamed and subsequently washed with water or an aqueous medium. The bleaching agent and adjuvant may be applied simultaneously or separately from the aqueous solution. If as a result of the previous treatment, sufficient bleaching agent or adjuvant remains on the textile, then the aqueous solution creation step may comprise applying an aqueous solution of the bleaching adjuvant or agent only. The bleaching agent is preferably hydrogen peroxide, although sodium chlorite or hypochlorite or peracetic acid may be used, and may be applied in an amount of 0.5-10%, preferably 1.5-5% by weight of the solution calculated as 35% hydrogen peroxide. The adjuvant may be a base e.g. sodium or ammonium hydroxide, a metal carbonate or an organic amine. Other adjuvants include stabilizers for (hydrogen peroxide, e.g. tetrasodium pyrophosphate, EDTA, borax, and sodium silicate. The solution may further comprise an optical brigibtening agent. The washing step may be as described in UK Specifications 1311096 or 1273546. The second steaming step may be at atmospheric or superatmospheric pressure. The initial treatment agent may be an enzyme desizing agent, a nonionic/anionic surfactant mixture or a bleaching agent. The process may be continuous, with short steaming times or batch process with longer-steaming times, and may be applied cellulosic fibre textiles e.g. cotton or cellulosic/polyester blends e.g. cotton/polyester or polynosic rayon/ polyester blends.
Patent GB-466019-A (GB)
Title: Improvements in metallic hatch covers
IPC: B63B19/26
Filed: 1935-11-14
Abstract: 466,019. Hatches. BURGESS, A. F. (MÛge, P. A.) Nov. 14, 1935, No. 31548. [Class 113 (i)] Metal hatch sections reinforced externally by longitudinal channel bars 3 and internally by transverse channel bars are hinged together centrally at 4 one section being also hinged at 11 to the hatch coaming. When the sections are raised by the tackle 12 the wheels 13 on the free end of the section traverse the runway 13<a> ori the exterior of the coaming. The abutting edges of the sections are packed by strips 6 held in position by the channel-bar 5 which is secured by nuts 10 on swivelling eye bolts q. Packing-material may also be inserted between the vertical faces of the channels 7 and the joint in the neighbourhood of the hinge 11 may be similarly packed. In a modified form of hinge, rear wheels 26 and cam tracks 28 are provided which in association with the hinge-bars 24 and the slotted members 29 cause the wheels 26 during the hinging motion to travel over the cam tracks. Reference has been directed by the Comptroller to Specifications 22864/01, [Class 113], 348,017, 370,653, and 409,231.
Patent GB-602073-A (GB)
Title: Method of producing small bodies of medical preparations adapted to be used as implantates
Filed: 1945-11-23
Abstract: Small bodies of medicinal preparations adapted to be used as implantates are prepared by shaping the bodies, and coating them with one or more protective layers consisting of non-absorbable, non-poisonous and mechanically harmless material on such parts of their surface that the free surface of the small bodies, from which absorption can take place, will remain substantially constant until the bulk of the preparation has been absorbed.  The bodies may be cylindrical or in the shape of a truncated cone, or composed of cylindrical or conical portions, the coatings preferably being on their circumferential surfaces, and also if desired on one end surface.  The thickness of the protective layers may be so small that the layers will collapse when not supported by the mass of the preparation.  Suitable protective layers are metals, e.g. gold, silver, aluminium or copper foils, or these metals may be applied by pasting, sticking, spraying, immersion or by an electrolytic process. If desired an adhesive, e.g. gum arabic or tolu balsam may be employed between the foils and the preparation, or such materials may be used as the sole protective layer.  Preferably the bodies are shaped under a pressure of at least 50 kilograms per sq. cm.  In order to produce a large initial dose the body may be provided with a non-protected protrusion of the same or another composition of the same or a different degree of compression than the remaining portion of the preparation.  Small bodies meeting a cyclically varying need of for example female sexual hormones, may be built up in layers consisting of different preparations forming together a cylindrical block, the circumferential surfaces of which is coated with the protective layer.  With female sexual hormones relatively thick layers of folliculin will alternate with relatively thin layers of folliculin plus lutein.  Other specified medicinal preparations are the male sexual hormones, the suprarenal hormone dexoxycorticosteron, insulin, and the different hypophysical hormones.  According to an example, testosterone propionate is moulded in the form of a rod having two ebonite end discs, the rod is sprayed with a solution of gum mastic in ether-alcohol to form a thin layer thereon, and after drying, is provided with a thin layer of silver in a cathodic sputtering apparatus, whereupon the ebonite discs are cut off.  The Specification as open to inspection under Sect. 91 describes also the addition to the preparations of cacodyl or natrici in order to accelerate absorption.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1218024-A (GB)
Title: Improvements in or relating to moulding rubber articles such as pneumatic tyres
Inventor: DUNCAN CHRISTOPHER
IPC: B29D30/06
Filed: 1967-07-11
Abstract: 1,218,024. Moulding tyres. DUNLOP CO. Ltd. 9 July, 1968 [11 July, 1967], No. 31824/67. Heading B5A. Rubber or the like articles are moulded in a two-part mould 5a, 5b from which air is removed before the moulding stage by bringing the mould parts to a predetermined position to leave an annular space between the parts which communicates with the mould cavity, enclosing the mould within a chamber 2 sealed from the atmosphere, withdrawing air from the chamber thence from the cavity, closing the mould and maintaining the chamber pressure below ambient pressure during the moulding process. Initially, the mould part 5b and a part 2b of the chamber are lowered to enable a tyre blank to be positioned on a diaphragm, whereupon the parts 5a, 5b are moved towards each other to a predetermined position, the diaphragm inflated, and a telescopic part 6 of the chamber is lowered by means 7 to seal with the part 2b. The chamber is then evacuated, the mould closed and the assembly brought to the position shown.
Patent GB-1010080-A (GB)
Title: Novel androstane derivatives and processes for their preparation
IPC: A61K31/569
Filed: 1964-08-05
Abstract: The invention comprises 11b ,17b -dihydroxy-17a  - methyl - 5a  - androstane derivatives of the general formula <FORM:1010080/C2/1> wherein either R represents the residue of a sulphonic acid and A and B each represent a hydrogen atom; or R represents a hydrogen atom, and A and B together represent a bond and the preparation thereof by reacting 3b ,11b , 17b  - trihydroxy - 17a  - methyl - 5a  - androstane with a halide of a sulphonic acid to form the corresponding 3b -sulphonate and, if desired, desulphonating this compound with an alkali metal agent to give the corresponding 11b ,17b -dihydroxy - 17a  - methyl - 5a  - androst - 2 - ene. As sulphonating agent tosyl or mesyl chloride may be employed, and as alkali metal agent an alkali metal hydroxide or carbonate may be used.  Specification 801,503 is referred to.
Patent GB-1396889-A (GB)
Title: Optical velocity measuring apparatus
IPC: G01P3/36
Filed: 1971-07-07
Abstract: 1396889 Photo-electric measurement of velocity MARCONI CO Ltd 20 June 1972 [7 July 1971] 31861/71 Heading G1A [ Also in Division G2] A velocity-measuring device photo-electrically detects light incident through an optical grating on paired photo-detectors the outputs of which are combined back-to-back to give an augmented signal representing frequency and to cause spurious signals. The optical grating directs light incident thereupon alternately upon one and the other photo-detector. In Fig. 3 detectors 22, 23 each receive light from one of two sets of laminates 21, 24 which together constitute the optical grating. In Fig. 4 a prismatic grating 4 similarly illuminates photo-detectors 25, 26. The latter embodiment may be modified by the use of a reflective grating.
Patent GB-682253-A (GB)
Title: Copolymers of vinyl chloride and vinylidene chloride
IPC: C08F2/00
Filed: 1949-12-14
Abstract: Copolymers of vinyl chloride and vinylidene chloride, of substantially uniform composition, are prepared by polymerizing an emulsified mixture of the monomers which are initially present in the ratio required to produce the desired copolymer and continuously or intermittently adding vinylidene chloride during the reaction to maintain this ratio substantially constant.  The process may be effected continuously by passing the reaction mixture through a series of autoclaves and adding vinylidene chloride to each succeeding autoclave to restore the monomer ratio to the initial value in the first autoclave.  The example describes a batchwise polymerization of an emulsion containing equal proportions of the monomers, potassium persulphate, sodium salts of aliphatic sulphonic acids and sodium bicarbonate, in which, by the addition of 1.14 gms. of vinylidene chloride per litre of emulsion every quarter-hour, the weight ratio of vinylidene chloride: vinyl chloride was maintained substantially equal, yielding a copolymer containing 15 per cent vinyl chloride and 85 per cent vinylidene chloride.  Specifications 612,331, 617,891 and 682,254 are referred to.
Patent GB-176298-A (GB)
Title: Improvements in machines for wood morticing
IPC: B23Q5/54
Filed: 1921-12-01
Abstract: 176,298. Lees, W., and Shore, B. Dec. 1, 1921. Mortising. - In a mortising-machine with both a chain and a chisel cutter, the operating handle K is carried by a member G which is put into gear with one or other of the two segmental wheels C, D, driving the two cutters by a hand lever H which operates a pinion I gearing with a circular rack J on a central shaft E to which the segmental wheel C is keyed, the wheel D being loose thereon.
Patent GB-693617-A (GB)
Title: Improvements in or relating to magnetic amplifiers
Inventor: MILSOM FREDERICK ROGER
IPC: H03F9/04
Filed: 1949-12-15
Abstract: 693,617. Magnetic amplifiers. SMITH & SONS (ENGLAND), Ltd., S., and FURZEHILL LABORATORIES, Ltd. Oct. 20, 1950 [Dec. 15, 1949], No. 32181/49. Class 40 (iv). In an amplifying system comprising a pair of similar back-to-back connected transductors 1, 2, each transductor is provided with positive and negative current and voltage feed-back windings which derive their energization from the output circuits. An embodiment is described in which a two-phase induction motor 10 is speed-controlled by a D.C. control voltage at terminals 16, 17, the feed-back windings increasing the output impedance of the amplifier and hence the rapidity of response. As shown, the control voltage is applied to the transductors over windings 109, 209 which magnetize their respective cores in opposite senses. The load winding on each amplifier comprises a parallel arrangement of windings 103, 104 and oppositely-directed rectifiers 105, 106 which are connected in series with a bridge rectifier 107 to an A.C. supply at terminals 101, 102, the rectifiers 105, 106 establishing unidirectional current flow in each load winding so that positive current feed-back is provided. Negative current feed-back is derived from crossconnected windings 211, 111 which are energized in series with output circuits constituted by windings 115, 116 and 215, 216. These output circuits function as D.C. control windings of a further pair of back-to-back connected transductors A and B. The voltage across each output circuit provides controllable positive feed-back in windings 113, 213 of the associated transductor and negative feed-back over crossconnected windings 214, 114. Delayed positive feed-back is also provided by windings 120, 220 which are energized over a common tapped reactor 5. In transductors A and B, similarlyarranged parallel load windings 121, 122, 221, 222 and rectifiers 123, 124, 223, 224 are provided, energization being effected from a common A.C. source 6, 7. The outputs of the transductors are applied to the centre-tapped primary winding of a transformer 8 so that a resultant A.C. voltage is supplied to a motor winding 9. Overall negative feed-back for the system is effected over windings 119 and 219 of transductors 1 and 2 respectively, these windings being connected between the load windings of transductors A and B. A second motor winding 11 is energized by A.C. in quadrature to the input of winding 9. In operation, the speedcontrol reference D.C. voltage at terminals 16, 17 is opposed by the D.C. output of a tachometer 15 coupled to the motor, the resultant voltage across windings 109, 209 and hence the current in the motor winding 9 being zero when the desired motor speed is obtained. Otherwise, any discrepancy in the motor speed results in an amplified A.C. signal in winding 9 which effects the required speed correction. According to the Specification the amplifiers A and B may be biased by arranging the output windings 115, 116 and 215, 216 in an assymetric manner.
Patent GB-978345-A (GB)
Title: Earth shovelling shovel apparatus
IPC: E02F3/407
Filed: 1963-08-15
Abstract: 978,345. Shovel excavators. GENERAL MOTORS CORPORATION. Aug. 15, 1963 [Aug. 29, 1962], No. 32271/63. Heading E1F. The two part ejector plate 44 of a boommounted shovel comprises an upper part 46 pivoted at the upper edge at 52 to the shovel and a lower part 48 pivoted at 50 to the lower edge of the upper part 44 movement of which is controlled by a hydraulic ram 58.
Patent GB-763319-A (GB)
Title: Washing machine
IPC: D06F17/02
Filed: 1954-11-08
Abstract: 763,319. Dishwashing machines. SOC. CIVILE ETUDES ET RECHERCHES POUR PROCEDES INDUSTRIELS E.R.P.I. Nov. 8, 1954 [Nov. 10, 1953], No. 32288/54. Class 138(1) [Also in Groups VI and VIII] A dishwashing machine having a fixed goodsreceiving tank 3 in which agitation is effected by a rotary " screw " which is not confined in a casing and is mounted adjacent the bottom of the tank on a vertical axle, comprises also a conduit C the lower extremity of which is open and located substantially above and adjacent the " screw " while the upper extremity is open to the atmospheres The crockery is placed in a basket 27 in a tank 3 provided with a screen 4 and central deflector plate 19. The suction produced by the " screw " 6 draws in air through the conduit C thereby reducing the load on a driving motor 9. The motor 9 is connected by belts 21, 23 and pulleys 20, 20a, 22, 22a to the screw 6 and to a pump 24 which produces a circulation of liquid to and from the tank 3 through a pipe (not shown) which can also be used for emptying the machine. The motor may have reversing means and the pulleys one-way clutches.
Patent GB-364721-A (GB)
Title: Improvements in or relating to vulcanizing or similar presses
IPC: B29D30/06
Filed: 1930-10-28
Abstract: 364,721. Vulcanizing-presses. MACBETH, C., 67, Norwich Union Chambers, Birmingham. Oct. 28, 1930, Nos. 32289/30 and 3130/31. [Class 70.] In a vulcanizing press particularly for tyres, power-operated toggle mechanism for opening and closing the press is suspended from the stationary mould member and the power cylinder is housed below this member. The toggle mechanism also controls means for displacing the bead rings from and towards their respective mould members during opening and closing. A cylinder a trunnioned in pedestals b operates a link a<2> pivoted on a cross shaft a3, carried by a frame underslung from the stationary mould member c. The link a<2> is connected to the hinged mould d by links e<1>, e2 on opposite sides of the press, pivoted on a cross shaft f. The lower bead ring g is mounted on a shank g<2> sliding in a guide in the bed i, and carrying a cross pin g<3> connected by a link g<4> with a crank g<5>. The crank g<5> is integral with a toothed segment g<7> meshing with a similar segment g<8> on the link a<2>. The bead ring h is similarly mounted on a shank h<2> with cross pin h<3> and link h<4> pivoted on a crank h<5> rigidly connected to the links e<1> e<2>. On closing the press, the rotation of the links a<2>, e<1> about their pivots operates to retract the bead rings into their respective mould halves, the movement being at first rapid, but getting slower as the moulds close. Registration of the mould parts is ensured by a flange k<1> and recess k. Accidental opening of the press may be obviated by a lever with a hook end j<1> which engages a toe on the toggle linkage. Release may be effected by a pedal j<3> or by power means which can only operate when there is no pressure medium in the interior of the tyre. The apparatus may be mounted on a tripod, having the feet on either side of the cylinder bolted down, while the rear foot is free, or the lower mould member may be trunnioned as at m to two pedestals b and at the rear be supported by a pillar m<1> with. ball and socket joints at m<3>, m<4>. Specification 274,539, [Class 70, Indiarubber &c.], is referred to.
Patent GB-1353334-A (GB)
Title: Method of free curing rubber
IPC: C08L23/16
Filed: 1971-07-09
Abstract: 1353334 Golf ball UNIROYAL Inc 9 July 1971 [25 Aug 1970] 32292/71 Heading A6D [Also in Division C3] A golf ball is prepared in Example 10 by (a) forming a masterbatch of polybutadiene and polypropylene at 340‹F, (b) blending the masterbatch with further polybutadiene at 270‹F, (c) mixing the product of (b) at 200‹F with silica, polyethylene, fillers, dicumyl peroxide and trimethylolpropane trimethacrylate, (d) injecting the final mixture into a dimpled mould, and (e) curing in a hot air oven.
Patent GB-447067-A (GB)
Title: Process for the manufacture of triphenylmethane dyestuffs
IPC: C09B11/12
Filed: 1934-11-09
Abstract: Triarylmethane dyestuffs are prepared (a) by condensing an aromatic alkylsulphonic acid with benzaldehyde or derivative and oxidizing the resulting leuco triarylmethane compound or (b) by condensing a hydrol of the diarylmethane series with an aromatic alkylsulphonic acid and oxidizing the resulting leuco compound. In examples: (1) tetraethyldiaminobenzhydrol is condensed in the presence of sulphuric acid with o-sulphomethylphenyltaurine or 1 : 2-xylyl-o  : o  - disulphonic acid and the leuco compound oxidized after separation by means of caustic soda: (2) tetramethyldiaminobenzhydrol is similarly condensed with b -sulphoethylbenzene and oxidized to the dyestuff: (3) o-chlorbenzaldehyde is condensed with o-monobenzylaminobenzyl-o -sulphonic acid and the leuco compound oxidized.  Dyestuffs containing amine and arylamino groups are mentioned. o-Sulphomethylphenyltaurine may be made from chlorethanesulphonic acid and 1-amino-2-sulphomethylbenzene.  1 : 2 - Xylyl - o  : o  - disulphonic acid may be made by reacting 1 : 2-dichlormethylbenzene with sodium sulphite.  b  - Sulphoethylbenzene may be made by reacting b -chlorethylbenzene with sodium sulphite.  o - Monobenzylaminobenzyl - o  - sulphonic acid may be made by benzylating o-amino-benzyl-o -sulphonic acid.
Patent GB-841135-A (GB)
Title: Improvements in and relating to electrical pulse rate discriminators
Inventor: SANDEMAN EDWARD KENNETH
IPC: G06J1/00
Filed: 1955-11-11
Abstract: 841,135. Frequency detectors. ENGLISH ELECTRIC CO. Ltd. Nov. 7, 1956 [Nov. 11, 1955], No. 32377/55. Class 40(5). [Also in Group XXXVIII] Apparatus for, e.g., comparing the angular positions of a controlling and a controlled shaft comprises means for producing pulses at rates proportional to the rotational speed of each shaft and a discriminator which indicates the difference between the pulse rates as a smooth voltage curve. As shown, pulse trains a, b (Fig. 1), are derived from sources 12, 13 (Fig. 2) respectively, from which they are taken to changeover switches 10, 11, and to switch 15 via delay networks 19. Each pulse of train a causes switch 10 to change over and then return, followed by switch 15 which stays changed over: each pulse of train b causes switch 11 to change over and then return, followed by switch 15 which stays changed over. Thus if each a pulse is followed by a b pulse, and vice versa switch 15 is always positioned so that there are no voltage changes at terminals 20, 22. If, however, two a pulses occur without an intervening b pulse, a pulse is developed at terminal 20 which is fed to a counter 23 and similarly two consecutive b pulses produce a pulse at terminal 22 which is fed to counter 23 in a negative sense. Counter 23 produces a stepped output voltage proportional to its count, as shown in curve e (Fig. 1). The voltage at terminal 21, shown by curve f (Fig. 1), is fed to a potentiometer 25 whose other end is connected to counter 23, whereby the voltage across potentiometer 25 is the sum of the voltages at 21 and the output from counter 23, as shown by curve g (Fig. 1). This signal is taken to a control or indicating circuit via a filter 26 to give the smooth curve h (Fig. 1) indicative of the difference between the angular positions of the two shafts. Specifications 817,671 and 817,672 are referred to.