baber/WOPTO huggingface dataset:
Patent GB-860576-A (GB)
Title: Method and apparatus for detecting minute concentrations of gases and vapors
IPC: H01J41/08
Filed: 1958-12-03
Abstract: 860,576. Measuring physical qualities electrically. MINE SAFETY APPLIANCES CO. Dec. 3, 1958 [Dec. 5, 1957], No. 38953/58. Class 37. Apparatus for detecting the presence of a trace contaminant in a gas comprises an ionization chamber into which the gas is passed together with a reagent which reacts with the contaminant to produce particulate matter so that a change in ionization current takes place. Fig. 2 shows a detection system in which the gas to be tested is passed, if necessary through a pyrolyzer 21, through an ionization chamber 20 of the type described in Specification 860,577. A reagent is also passed into the ionization chamber via tube 5 so that nascent particulate matter is produced in the reaction with a resultant change in ionization current flow between electrodes of the chamber. This is detected by the out-of-balance of a Wheatstone bridge the resetting of which to a null condition indicated on valve voltmeter V is performed by the setting of a calibrated potentiometer 24. Two ionization chambers may be used with the gas flowing through them in parallel as shown in Fig. 3 or in series as shown in Fig. 4. The second chamber into which no reagent is introduced is then substituted for the fixed resistor 23 of Fig. 2. Anhydrous ammonia may be used as the reagent in a detection of hydrogen halides either in the gas initially or produced by the pyrolysis of halogenated hydrocarbon, for the detection of nitric oxide or sulphur dioxide. Hydrogen chloride may be used as the reagent in detection of ammonia or hydrogen cyanide. Acetic acid may also be used as the reagent. The apparatus may be used inversely for the control and prevention of the formation of particles in gas. In this case the auxiliary ionization chamber is exposed to the same reagent as that in use in the main chamber.
Patent GB-852256-A (GB)
Title: Improvements in and relating to industrial gas-filtering plant
IPC: B01D46/44
Filed: 1957-07-30
Abstract: 852,256. Gas filters. BAINBRIDGE, C. A., and FARRINGDON WORKS & H. PONTIFEX & SONS Ltd. March 21, 1958 [July 30, 1957], No. 38990/59. Divided out of 852,254. Drawings to Specification. Class 8(2). The description is similar to Specification 852,254 but the claims differ. Specifications 802,764 and 852,255 also are referred to.
Patent GB-1086547-A (GB)
Title: Method and stripping plant for stripping tobacco
IPC: A24B5/10
Filed: 1966-09-02
Abstract: 1,086,547. Pneumatic separation. HAUNIWERKE KORBER & CO. KOMM. GES. Sept. 2, 1966 [Sept. 3, 1965], No. 39242/66. Heading B2H. [Also in Division A2] A plant for stripping and separating tobacco comprising stripping devices 4, 12 and 18 operating in stages and in which at least one separating device, as 6, 8 or 10, which may be of the type described in Specification 1,022,471 is arranged between two stripping devices, is characterized in that a separate separating device 28 is provided, the material supply of which is connected to the direct flow material off-take 26 of the preceding separating device 10 of which the heavy material off-take 32 is connected to a stripping device 12 following the separator 28, and to which the heavy material off-take 30 of the device 28 is also connected. Light material from the separators 6, 8 and 28 is taken off by pipe 48. An independent separating device, as 28, may also be connected between stripping devices 12 and 18.
Patent GB-1075669-A (GB)
Title: Method and apparatus for cutting tubular members from axially advancing tubular stock
Inventor: CVACHO DANIEL STEVE
IPC: B23D25/04
Filed: 1964-09-25
Abstract: 1,075,669. Shearing. REYNOLDS METALS CO. Sept. 25, 1964, No. 39254/64. Heading B3W. [Also in Division B4] Apparatus for cutting axially advancing tubular stock 22, Fig. 1, into individual tube elements 21 comprises means for orbiting cutting means 105, Fig. 5, round the stock 22 and means for rotating a non-reciprocating rotary member 65 round the stock 22 coaxially with the cutting means, the member 65 being adapted to advance the cutting means axially with the stock 22 and to move the cutting means radially inwards to cut the stock while advancing therewith. The cutting means is carried by a rotatable member 98, Fig. 4, which is axially reciprocable by means of a cam track 69 carried by the member 65. Mounted in a slot 70 in the member 65 is a spring-influenced cam-plate 71 which is movable radially inwardly by means of rollers 82 engaging the outer surface 76 of the member 65, the rollers being rotatably carried by a bracket 79 connected to the piston 86 of an hydraulic cylinder 85. Each cutting means 105 comprises a blade 108 carried by a pivotallymounted arm 106 having a gear portion 112 engaging a ring gear 113 which is also engaged by a pinion gear 114 carried by an arm 116 provided with a roller 117 engaging the inner surface 74 of the member 65. When the roller 117 engages the moved-in cam-plate 71, the gear 114 is rotated counter-clockwise to cause counter-clockwise rotation of the gear 113 relative to the clockwise driven rotation of the member 98 to cause the arms 106 to pivot counter-clockwise and move the blades 108 inwardly to cut the stock. When the roller 117 moves beyond the cam-plate 71, the gear 114 is rotated clockwise to cause clockwise rotation of the gear 113 which causes the arms 106 to pivot clockwise and pull the blades 108 away from the stock. With the blades withdrawn from the stock, the cam track 69 reverses the direction of axial movement of the member 98 and returns it to the right-hand terminal position while allowing the stock to move to the left. In the form shown, the apparatus cuts axially advancing and rotating tubular container body stock that is being continuously formed by helically winding strips of container material on a mandrel. The apparatus may, however, be used for cutting non-rotating tubular stock, e.g. tubes of paper, metal or plastic. The cutting blades may be conventional razor blades, or can be rotatably mounted on the arms 106.
Patent GB-1405298-A (GB)
Title: Semiconductor impedance circuit and applications thereof
IPC: H03H11/44
Filed: 1972-08-24
Abstract: 1405298 Impedance converters; transistor oscillators, modulators MITSUMI ELECTRIC CO Ltd 24 Aug 1972 [28 Aug 1971 22 March 1972] 39425/72 Headings H3T H3R and H3U An impedance converter comprises a pair of cross-coupled opposite conductivity transistors Q1, Q2 with impedances Z 1 , Z 3 , Z 4  connected between a common terminal (earth) and the base of Q1, the emitter of Q2, and the base of Q2 respectively, a farther impedance Z 2  being connected between the bases of the two transistors. The impedance seen between the emitter of Q1 and the common terminal may be expressed as Z 0  = - K 1 Z 1  + K 2 /Z 2  where K 1 , K 2  are functions of the impedances Z 1 , Z 3 , Z 4 . If Z 2  is capacitive and a further capacitor 6 is connected between terminal E and earth the circuit will oscillate, the frequency of oscillation being varied by a modulation source 8 or by varying the bias source VS<SP>1</SP> (Figs. 10, 11, not shown). The variation of the voltage of sources 8 or VS<SP>1</SP> will vary the base-collector capacitances of the transistors, which are in parallel with Z 2  and a larger frequency swing can be obtained if Z 2  is a voltage controlled capacitor, e.g. a varactor diode. The converter may be arranged to function as a gyrator (Figs. 2, 4, 8, not shown) by including a further impedance (Z 5 ) in series with the emitter of Q1, which has an impedance Z 5  = K 1 Z 1 . The two transistors may be formed as a single four terminal element, Fig. 14 (not shown).
Patent GB-1111404-A (GB)
Title: Plastic blind rivet and method of producing the same
Inventor: MORIN LOUIS HUNTINGTON
IPC: B29C45/16
Filed: 1966-09-03
Abstract: 1,111,404. Injection moulding rivets. PLASCO Ltd. 3 Sept., 1966, No. 39467/66. Heading B5A. [Also in Division F2] In a method of making blind rivets of plastics material, a stud part 16 is injection moulded at a first moulding station 13 and a tubular body part 25 is injection moulded directly on to the stud part 16 at a second moulding station 14. To prevent fusion between the two parts the stud 16 may be moulded from material, e.g. Nylon having a higher melting point than the material of the part 25. The stud part is moved from one moulding station to the other and then to a trimming station 15 by gate portions 22, 31 moulded around a transfer rod 23. The stud part 16 comprises a head 18, a tapered shank 17, a shoulder portion 20, and a cylindrical portion 19 having circumferentially spaced ribs 21. The body part 25 comprises a head 26, a tubular portion and anchor wings 29.
Patent GB-828980-A (GB)
Title: Process for the preparation of azulenes
IPC: C07C13/52
Filed: 1957-12-19
Abstract: Azulenes are formed from fulvenes as in the parent Specification, the fulvene being formed by the reaction of a metal derivative of a cyclopentadiene, unsubstituted in at least one position adjacent to the CH2 group, with a pyrylium salt; the fulvene obtained is a 5-hydroxy- or 5 - alkoxy - pentadiene - 2,4 - ylidene fulvene which readily loses water or alcohol with ring closure to form the azulene. The reaction is typified by: <FORM:0828980/IV (b)/1> The metal derivative of the cyclopentadiene may be formed in situ from the cyclopentadiene and an alkali metal alcoholate. Substituted cyclopentadienes including indene can be used.  The pyrilium salt may be the perchlorate or fluoborate; homologues can be used.  The reaction is preferably performed in tetrahydrofurane or ethylene glycol dimethyl ether.  The examples refer to the preparation of (1) 4,6,8-trimethyl azulene from sodium cyclopentadiene and 2,4,6-trimethyl pyrylium perchlorate and (2) 4-methyl-6,8-diphenyl azulene from sodium cyclopentadiene and 2 - methyl - 4,6 - diphenyl pyrylium perchlorate. Specification 794,383 also is referred to.
Patent GB-843819-A (GB)
Title: Improvements in typewriter mechanisms
IPC: B41J19/02
Filed: 1956-12-28
Abstract: 843,819. Typewriters &c. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 28, 1956 [Dec. 30, 1955], No. 39530/56. Class 100(4) In a decelerating mechanism for use with a typewriter having a travelling carriage, when a tape drum 20, Fig. 1, rotates to drive the carriage for tabulation a hub 10 is rotated through a member 26 and a one-way spring clutch 28, and with it a governor 2 through gears 4, 6. Tab check lever 30, Fig. 3, is set by being pulled to the left by a spring 56 acting through members 58, 60, 62, 38, 36 when released from a retainer 54 by tab lever 50. As cab check lever 30 is driven back to its original position during the last part of the carriage travel, a cam 58 is driven anti-clockwise about a shaft 8 through the members 36, 38, 62, 60. The cam 58, Fig. 1, is mounted on a hub 64 which is connected via a one-way spring clutch 66 to the hub 10 which drives the governor 2 as previously described, thus decelerating the carriage. At the end of a carriage return movement, a bell crank 78, Fig. 4, is rocked anti-clockwise by a slide 72 pushed by a stop 70. A cam 100 is rotated anti-clockwise through members 98, 96, 86, and a lever 84 depressed by an ear 82. The cam 100, Fig. 1, rotates a hub 102 which rotates a hub 16 via a one-way spring clutch. The hub 16 drives the governor 2 via members 14, 10, 6 and 4. The decelerating force for carriage return is adjustable by altering the relative positions of levers 88, 86 by turning a screw 92.
Patent GB-857336-A (GB)
Title: Fluorocarbon vinyl-type esters and polymers
IPC: C08F28/00
Filed: 1956-12-31
Abstract: The invention includes a polymer of a vinyl or allyl fluorocarbon ester of the formula:  Rf.SO2.N(R1)R.COOCH=CH2 or Rf.SO2.N(R1)R.COOCH2CH=CH2 where Rf is a perfluoroalkyl group of 4 to 12 carbon atoms, R1 is hydrogen or an alkyl group of 1 to 6 carbon atoms and R is an alkylene bridging group of 1 to 12 carbon atoms. The vinyl and allyl esters may be bulk, solution, e.g. toluene, or emulsion polymerized using peroxide catalysts, e.g. acetyl or benzoyl peroxides, either alone or together or with other ethylenic monomers such as maleic anhydride, acrylonitrile, vinyl chloride, vinyl acetate, vinyl silicones, styrene, methyl acrylate, methyl methacrylate, ethylene, isoprene and butadiene.  The polymer may be modified by the use of plasticizers, carbon black, zinc oxide or by copolymerization with polyfunctional compounds which cause cross-linking.  Examples describe the polymerization of N-ethyl- and N-methyl- N-perfluoro-octanesulphonyl glycine vinyl ester and the copolymeriation of N-methyl-N-perfluoro-octanesulphonyl-11-amino-undecanoic acid allyl ester and maleic anhydride.  Specifications 758,467 and 857,335 are referred to.ALSO:The invention comprises vinyl and allyl esters of a perfluoroalkanesulphonamido alkylene-monocarboxylic acid having the formula:  Rf SO2 N(R1)R-COOCH=CH2 or RfSO2N(R1)R-COOCH2-CH=CH2 where Rf is a perfluoroalkyl group containing 4 to 12 carbon atoms, R is an alkylene bridging group containing 1 to 12 carbon atoms and R1 is hydrogen or an alkyl group containing 1 to 6 carbon atoms.  They may be prepared by esterifying the corresponding acid or prepared directly by condensing an alkali metal salt of a perfluoroalkylsulphonamide with a vinyl or alkyl ester of an omega halogenated carboxylic acid.  These esters may be polymerised or copolymerised with other ethylenic compounds (see Group IV(a)) to yield a polymer that, when coated on the surface of an article, gives both a water and oil repellent surface.  The monomeric esters may be used in a similar manner.  In Examples (1) the sodium salt of N-ethyl-perfluoro-octanesulphonamide is condensed with vinyl chloroacetate.  (2) the N-methylcompound is similarly used.  (3) N-methyl-N-perfluoro-octanesulphonyl-11-amino-undecanoic acid is esterified with vinyl acetate in the presence of sulphuric acid and mercuric acetate.  (4) N-perfluoro-octanesulphonyl glycine is esterified with allyl alcohol in the presence of betanaphthalene sulphonic acid.  (5) N-methyl-N-perfluoro-octanesulphonyl - 11 - amino - undecanoic acid is similarly esterified. Specifications 758,467 and 857,335 are referred to.
Patent GB-1361256-A (GB)
Title: Gas turbine engine blades
IPC: F01D5/18
Filed: 1971-08-25
Abstract: 1361256 Gas turbine blades ROLLS-ROYCE (1971) Ltd 25 Aug 1972 [25 Aug 1971] 39778/71 Heading FIT A hollow gas turbine blade contains a doublewalled insert 14 which is spaced from the blade walls 17, 18 but inclined fins 15 defining inflow and outflow regions for coolant fluid. The latter, e.g. liquid, air or other gas, may be supplied at the blade root end 13 and flows longitudinally part pimples 16. Some coolant discharges through leading edge film cooling holes 24 whilst the remainder enters the open forward end 22 of insert 14 and flows chord-wise over spacers 21 to leave the insert through holes or slots 23 and enter the outflow region 27 rearward of fins 15. Pedestals 19 are provided in region 27. Coolant leaves the latter through trailing edge holes 25, when provided, or at the blade tip 12. Bleed holes may be provided in the root end of fins 15 to allow a small amount of coolant to flow directly to region 27 without passing through insert 14. Inclined fins may be provided instead of or in addition to pimples 16. The forward edge of insert 14 may be closed and provided with holes analogous to holes 23. The blade may be for a rotor or stator.
Patent GB-1244489-A (GB)
Title: Improvements in or relating to transmission conductors
IPC: C08L63/02
Filed: 1968-08-20
Abstract: 1,244,489. Coated wires. HERMANN WIEDERHOLD. 20 Aug., 1968 [29 Aug., 1967], No. 39780/68. Heading B2E. [Also in Division H1] Transmission conducts or multicore cables are manufactured from wires having a cured, white or coloured coating which was applied as an uncured coating consisting of binders which cured to a thermosetting and flexible coating under the influence of heat, in the presence or absence of oxygen, the binders being one of a drying alkyd resin which is modified with at most 40% of predominantly or solely drying monobasic fatty acids combined as esters, an alkyd resin modified with non-drying, monobasic fatty acids combined with a melamine and/urea resin, an epoxide resin produced from a 2, 2-bis (4-hydroxyphenyl) propane and epiohlorohydrin the epoxide equivalent of 500 to 2,000, which resin is either esterified with partially or completely drying monobasic fatty acids or reacted with melamine and/or urea resin, a mixture of a polyester alcohol and a blocked (defined) polyisocyanate, a mixture of a polyester alcohol, a blocked polyisocyanate and a soluble polyamide (defined), or a urea resin plasticised with a polyester, the binders containing white or coloured pigments in such quantities that the metal of the wire is covered, the pigment of the coating of each wire being such as to distinguish one wire from any other. The pigment may be zinc sulphide and dyestuffs may also be present in the binder A colourless or transparent additional coating may lie above the white or coloured coating.
Patent GB-895933-A (GB)
Title: Improvements relating to flame regulating means in lighters adapted for burning a gaseous fuel
IPC: F23Q2/173
Filed: 1960-11-18
Abstract: 895,933. Lighters using liquefied gas. NEWMAN, S. H. Nov. 18, 1960 [Dec. 8, 1959], No. 39796/60. Class 75(3) A regulator for adjusting the height of the flame of a lighter using liquefied gas and adapted to be fixed to the reservoir thereof comprises a disc-like porous mass 27 disposed between the bottom of a cup 21 and the top of a wick carrier 23, a threaded cap 7 adapted to be screwed into the body 1 of the regulator to increase the pressure on the porous mass 27 and thereby shorten the flame and a screw 34 adapted to be screwed through the wall of the regulator to apply pressure to a rubber sleeve 32 between the cup 21 and an annular projection 28 on the wick carrier 23 so that the rubber sleeve increases in length to reduce the pressure on the porous mass 27 and thus increase the flame. The lower end of the wick carrier 23 abuts a disc 30 of light elastic material resting on a shoulder in the body 1. The screw 34 is rotated by a gear wheel 36. A burner tube 11 slides in an aperture in the cap 7 and carries at its lower end a synthetic rubber obturator 15 adapted to close a gas duct 19 in the cup 21. The burner tube is forced downwardly by an elastic body 18 and is lifted to open the duct 19 by an operating lever adapted to engage a groove 17 in the burner tube. The gas passes into the burner tube through radial ducts 13.
Patent GB-1303235-A (GB)
IPC: H01L21/22
Filed: 1971-08-25
Abstract: 1303235 Semi-conductor devices SIEMENS AG 25 Aug 1971 [10 Sept 1970] 39811/71 Heading H1K A Schottky barrier diode is constructed by forming a highly doped zone 63, of one conductivity type, in the surface of a semi-conductor substrate 1, of the opposite conductivity type, introducing addition doping material, of the one conductivity type, into the zone, depositing a layer 7 of semi-conductor material over the substrate surface, and causing the additional doping material to diffuse out of the zone 63 and form a zone 65 adjacent the Schottky barrier formed by a metal contact 64. As shown a high threshold voltage is obtained, the zone 65 merely reducing the path resistance to the ohmic contact 67. In an alternative embodiment (Fig. 5) not shown, the zone 65 reaches to the Schottky contact causing a low threshold voltage to be obtained. The additional doping material may be of phosphorus with the zone 63 doped with arsenic and/or antimony. The contact material may be of aluminium alloyed or sintered to the semiconductor material via an aperture in a silicon dioxide layer 30. In an integrated circuit, (Fig. 4) not shown, using the construction, low and high threshold devices may be formed with transistors and resistors, isolating walls with boron doping separating the components.
Patent GB-871898-A (GB)
Title: Improvements in and relating to furniture having drawers
IPC: A47B95/00
Filed: 1958-12-11
Abstract: 871,898. Chests of drawers &c. BERRY, L. Dec. 2, 1959 [Dec. 11, 1958], No. 39987/58. Class 52(1). The drawers 5 of a chest of drawers, dressing table, sideboard or the like slidable on rails 6 into a cabinet part 4 have at each end a transverse groove or hand hold 8 and front and rear faces 5a, 5b, having different decorative coverings so that by reversing the drawer in the cabinet a different appearance may be obtained. Rails 9 fit between the drawers in slots in the framework so as to be also reversible.
Patent GB-1260032-A (GB)
Title: Improvements in the production of polyacrylonitrile conjugate filaments
Inventor: SAJI YASUO
IPC: D01F8/08
Filed: 1969-08-11
Abstract: 1,260,032. Acrylonitrile copolymer conjugate filaments. TOHO BESLON CO. Ltd. 11 Aug., 1969, No. 40134/69. Heading B5B. [Also in Division D1] In the production of acrylonitrile copolymer conjugate filaments by wet spinning into a dilute aqueous solution of zinc chloride two solutions of acrylonitrile copolymers in concentrated aqueous solutions of zinc chloride, the solutions being simultaneously extruded through a spinneret adapted for the spinning of conjugate filaments, the copolymers have differing compositions A and B respectively shown by the following equations (1) to (6):- Composition A:- Composition B:- and both compositions satisfying the following conditions:- wherein M represents the % by weight in the acrylonitrile copolymer of a comonomer which is hydrophobic, N represents the content in per cent by weight of a comonomer which is hydrophilic, and non-ionizable in said acrylonitrile copolymer, L represents the content in per cent by weight of a comonomer which is ionizable, in said acrylonitrile copolymer, and a and b are suffixes indicating contents belonging to composition A or composition B respectively. The contents of comonomers to be copolymerized with acrylonitrile in said compositions may satisfy, in addition to conditions (1) to (6), one of conditions (7) to (9) shown below:- Equation (7) applies when yarns consisting of more than 80% by weight of the conjugate filaments of the invention are produced. Equation (8) applies when blended yarns consisting of more than 20% by weight of non- shrinkable fibres are produced and equation (9) applies in the case of yarns consisting of more than 20% by weight of shrinkable fibres, the balance in each case by weight being the fibres of the invention. The composite filaments wet spun according to the invention may be stretched at a stretch ratio of 1À1 : 1 to 1À4 : 1 by means of metallic driven rollers having a surface temperature above 120‹ C., opening the bundle of filaments and then treating them for a short time with hot water or steam at 80-130‹ C. without tension. The hydrophobic comonomer may be methyl acrylate or vinyl acetate, the hydrophilic comonomer may be acrylamide or methacrylamide and the ionizable comonomer may be sodium metha-acrylsulphonate.