baber/WOPTO huggingface dataset:
Patent GB-506404-A (GB)
Title: Improvements in and relating to helicopters and gyroplanes
IPC: B64C27/00
Filed: 1937-11-26
Abstract: 506,404. Aircraft with rotary - wing systems. CIERVA AUTOGIRO CO., Ltd., and BENNETT, J. A. J. Nov. 26, 1937, Nos. 32731/37 and.7367/38. [Class .4] . In a helicopter or gyroplane having pairs of oppositely-rotating rotors, each having two or more blades, the rotors are coaxial or spaced and non-intermeshing and the rotors are so geared together that when a blade of one rotor lies in the direction of forward flight a blade of the other rotor lies in a direction making with the first named blade an angle of half or approximately half the blade-spacing angle. The rotors may have a single counterweighted blade, the blade and the counterweight being free to flap either independently or as a unit, and in this case when one blade lies in the direction of flight the other lies in a direction substantially perpendicular to it. In one form, laterally spaced rotors, each comprising two blades mounted on coaxial flapping axes are mounted on laterally-projecting pyramidal bracing-structures 18, 18a. The rotors are driven in opposite directions through bevel wheels 36, 35, 35a, shafts 28, 28a including universal joints 34, 27, 27a, and bevel wheels 25, 26, 25a, 26a. The blades of the rotors are displaced 90‹ relatively to each other. A splined joint 32 is provided in the shaft 28 to facilitate adjustment, by trial and error, of the phase displacement in order to effect balancing of the bouncing vibrations of the two rotors. Drag pivots may be provided 'and these may be so disposed as to cause change of pitch angle of the blades with movement on the drag pivots. In gyroplanes and helicopters in which the drive to the rotors may be disconnected such disconnection is arranged to take place between the shaft 37 and the engine. The rotors may be tilted to effect control of the machine. In a modification, a helicopter is provided with a closed cockpit, tail stabilizing surfaces and further laterally extending stabilizing surfaces 44. The rotors are carried by a single mast, the closely overlapping rotors being rotatable about upwardly and outwardly diverging axes. The mast 48 carries a rotor supporting-beam 49 rockable about a universal joint 53. The rotors comprise single counterweighted blades 83, 83a, rotatable about the inclined axes A A, B B. In a specific example the rotors have a diameter of 35 ft. are spaced 20 to 24 inches apart; the rotor blades have a maximum droop angle of 4‹ and the included angle between the rotor axes is 16 to 20‹. The pitch of the rotor blades may be adjusted cyclically.
Patent GB-763668-A (GB)
Title: An improved numeral drum for counting mechanisms, more especially designed for the counting mechanism of electricity meters
IPC: G06M1/24
Filed: 1954-11-11
Abstract: 763,668. Counting-apparatus. LANDIS & GYR AKT.-GES. Nov. 11, 1954 [Nov. 16, 1953], No. 32735/54. Class 106 (1). The numeral wheel of a counter is made from a piece of sheet metal curved to the form of a cylinder. Tongues 6, Fig. 2, integral with the drum 1 pass through slots 7 in a sheet metal hub 4 and are bent back so as to rigidly join the cylinder and the hub. The hub 4 may be apertured. In another example, Fig. 5, two tongues 13 pass through slots formed in a hub member 12 also integral with the drum. The member 12 has a bearing part 14 which receives the spindle of the drum. In another example, the drum receives a sheet metal hub cemented, soldered, welded or glued thereto and having a spindle receiving bearing.
Patent GB-1433425-A (GB)
Title: Fasteners
IPC: F16B13/14
Filed: 1973-07-10
Abstract: 1433425 Nuts EATON CORP 10 July 1973 [12 July 1972] 32830/73 Heading F2H In a female screw-threaded fastener comprising a one piece moulded plastics of two sections 10a, 10b the arrangement is such that faces 20a, 20b are folded into face-to-face relationship so that threaded cavities 40a, 40b and at least two loops 60a, 60b on each section form a threaded bore 40 with which a male threaded member is inserted to hold the sections 10a, 10b together. The sections 10a, 10b may be joined together end-to-end or Fig. 3 (not shown) sideto-side by a web 12 notched at 14 to facilitate folding. In an alternative embodiment, Fig. 2 (not shown), a web is provided across the cavity at one end of each section to enable a blind bore 40 to be formed when the sections are folded.
Patent GB-189801-A (GB)
Title: Improvements in or relating to the measurement of electrical currents or potentials
IPC: G01R19/00
Filed: 1922-12-01
Abstract: 189,801. Siemens & Halske Akt.-Ges. Dec. 2,1921, [Convention date]. Thermionic relays. - In arrangements for measuring small direct electric currents or pressures by measuring the anode current in a thermionic valve to the grid of which is applied the voltage to be measured or a voltage dependent on the current to be measured, the normal grid voltage is arranged to be of such negative value that no appreciable electron current flows to the grid, and the anode voltage is maintained below the ionization voltage, usually about 7 volts, of the residual gases in the valve. The grid current, and consequently the current consumption of the measuring-device, is thus kept as low as possible, and the ratios of the grid current, and of the voltage to be measured, to the anode current is made invariable. As low anode voltages are used, large grid interstices are employed. In the arrangement shown for testing X-rays by measuring the ionization produced by the rays in a chamber comprising a casing i and an electrode p, the casing i is connected through a battery b to earth and the electrode p to a high resistance o in the grid circuit of the thermionic tube t, the positive pole of the grid battery b<2> of 3 to 4 volts being connected to the filament c and to earth. An ammeter m and a battery b<4> of about 7 volts are inserted in the anode circuit, and, in order to increase the steepness of the characteristic curve of the tube and so the sensitiveness of the measuring-arrangement, a space charge grid g' may be connected to the positive pole of the battery b<4>. The reading of the ammeter m measures the voltage across the resistance o and thus the intensity of the ionization current through the chamber i.
Patent GB-914428-A (GB)
Title: Process for the production of ª-, ª--dichloropropionic acid
Inventor: SCHLECHT HELMUT
IPC: B01J31/02
Filed: 1961-09-14
Abstract: a ,a -Dichloropropionic acid is prepared by chlorinating a -chloropropionic acid at 160 DEG -180 DEG C., or chlorinating propionic acid at about 120 DEG C. to form a -chloropropionic acid and further chlorinating as above, in the presence of a compound RNHSO2X, where R is hydrogen or alkyl and X is hydroxy, alkoxy or a halogen.  Specified catalysts are sulphamic acid, its acid chloride and its esters, e.g. H2NSO3CH3 and C2H5NHSO2Cl; these may be formed in situ, e.g. the last from ethylamine and sulphuryl chloride.  Other organic additives which boil above a ,a -dichloropropionic acid and are soluble in the chlorination mixture may be present, e.g. aliphatic or aromatic sulphochlorides.
Patent GB-662626-A (GB)
Title: Improvements in interpolymers
Filed: 1949-12-29
Abstract: Soluble, convertible ternary interpolymers are obtained by heating (a) 6 to 120 mols. of a cyclic terpene hydrocarbon, (b) 1 mol. of an ester of castor oil and maleic acid or its homologues, and (c) 0.5 to 20 mols. of another copolymerizable mono-olefinic compound, at a temperature of 25-120 DEG  C., in the presence of a catalyst. Specified terpenes are the methenes, terpinenes, limonene, dipentene, a -pinene and mixtures thereof, particularly turpentine.  Suitable mono-olefinic compounds are styrene, p-chlorostyrene, p-methylstyrene, a ,p-dimethylstyrene, p - fluorostyrene, p - trichloromethylstyrene, p - methoxystyrene, 2,5 - dichlorostyrene, vinyl naphthalene, ethylene, propylene, isobutylene, vinyl acetate, butyrate and benzoate, vinyl ethyl, propyl and benzyl ethers, methyl, n-butyl and tolyl acrylates, methyl methacrylate, ethyl chloroacrylate, methyl crotonate, the mono-olefinic acids themselves, and their chlorides, amides and nitriles.  The castor oil ester is generally prepared from 1 mol. of castor oil per mol. of maleic anhydride, which latter may be replaced partly or wholly by citraconic acid or anhydride. Modifying agents such as linseed oil may be present in the preparation of the ester.  Suitable polymerization catalysts are benzoyl and acetyl peroxides and tert.-butyl hydroperoxide.  The reaction is continued to the point of incipient gelation and the interpolymer is isolated by evaporation of the terpene or by precipitation through the addition of a non-solvent, e.g. methanol.  The products may be dissolved in, for example, acetone, xylene and butanol, and employed as coating, laminating and impregnating compositions, alone or with other resins, such as ureaformaldehyde resins.  On heating, the compositions are converted to an insoluble and infusible state.
Patent GB-1603295-A (GB)
Title: Method of manufacturing supports for porous gas diffusion barriers
IPC: B05D5/00
Filed: 1974-07-26
Abstract: The invention relates to a method of manufacturing supports for porous filters. Supports are placed in contact with a first slip coating liquid containing in suspension a mineral powder comprising agglomerates between 10 and 30 microns in diameter, the resulting deposited layer is dried by heating it to approximately 100 DEG  C., the layer is brushed so as to remove particles of powder which have not penetrated inside the pores, the thus-treated supports are placed in contact with a second slip coating liquid containing in suspension a mineral powder having a particle size between 1 and 8 microns, and the products obtained are heat-treated at approximately 1500 DEG  C. The resulting filters are used for separating isotopes.
Patent GB-1433916-A (GB)
Title: Thiophosphoric acid amides as nematocides insecticides and acaricides
IPC: C07F9/59
Filed: 1973-07-12
Abstract: 1433916 Pesticidal thiophosphoric acid amides CIBA-GEIGY AG 12 July 1973 [13 July 1972] 33239/73 Heading C2P Novel compounds of Formula I where R is n-propyl or n-butyl and A is ethylene, 1-methylethylene, 1,1-dimethylethylene, but-2- enylene or pent-2-enylene may be prepared (a) by reacting O-ethyl-S-n-propyl (or n-butyl) thiolophosphorochloridate with a suitable heterocyclic amine in the presence of an acid acceptor or with an alkali metal, ammonium or alkylammonium derivative of the heterocyclic amine or (b) by reacting a compound of Formula VI with a compound HSR in the presence of an acid acceptor or with an alkali metal, ammonium or alkylammonium salt of the compound HSR. The compounds of Formula I have insecticidal, acaricidal and nematocidal properties and may be used as the active ingredients in conventional pesticidal compositions.
Patent GB-1529429-A (GB)
Title: Aerosol propellant compositions
IPC: C09K3/30
Filed: 1977-08-09
Abstract: 1529429 Aerosol propellants MONTEDISON SpA 9 Aug 1977 [13 Aug 1976 1 June 1977 10 June 1977] 33388/77 Heading C4X A binary composition suitable as a propellant for aerosols comprises a mixture of: component A: which is CHClF 2 , CH 2 F 2 , or CF 3 -CH 3 , and component B: which is CH 2 ClF, CClF 2 -CHClF, CF 3 -HClF, CHF 2 -CClF 2 , CHClF-CHF 2 , CF 3 -CH 2 Cl, CHF 2 -CHF 2 , CF 3 -CH 2 F, CClF 2 -CH 3  or CHF 2 -CH 3 . A ternary composition comprises a further component C which is nbutane, isobutane, pentane or isopentane.
Patent GB-1323573-A (GB)
Title: Apparatus for the electrical high-frequency drying of fibre  material in web or thread form in a continuous working operation
IPC: F26B3/34
Filed: 1970-07-09
Abstract: 1323573 Drying by high frequency electrical fields LICENTIA PATENT-VERWALTUNGSGmbH 9 July 1970 [9 July 1969] 33391/70 Heading F4G [Also in Divisions F2 and H5] Fibre material in thread or web form is dried by passing it around a rotatable electrode structure having an air passage therethrough and connected to a high frequency electrical generator comprising a thermionic power valve 18, the power valve 13 being situated at least in part in the air passage, so that heat removed from the valve 18 is used to prevent precipitation of moisture on the electrode parts. The electrode structure comprises interleaving rod electrodes 12 and 11 carried by the peripheries of capacitor plates 5 and 7 secured to insulating plates 6. The plates 6 are interconnected by fan blades 13 which draw air round the valve 18 and expel it through apertures 32 in the cover 10, as the electrode structure is rotated. The capacitor plate 5 is carried by a race 3 journalled on a tube 2 secured by an earthed capacitor flange 9 to the wall 1. Stationary capacitor plates 4 and 8 are supported by insulated leads 15 and 14, 16 and 17 connecting them to the generator circuit (Fig. 2) and directly to the cathode 20 and grid 21. A third insulated lead (not shown in Fig. 1) connects the generator circuit to a supply lead 23 of the valve heater. Switch 24 cuts off the anode voltage and the heater current when the cover 10 is opened. Reference has been directed by the Comptroller to Specification 1,126,405.
Patent GB-797245-A (GB)
Title: Improvements in or relating to mowing
IPC: A01D34/00
Filed: 1956-11-01
Abstract: 797,245. Lawn mowers. FURNISS, A. E. Nov. 1, 1956, No. 33438/56. Class 6(1). [Also in Group XXVIII] Apparatus for use with power driven mowing machines which enable areas of grass to be mown without the guidance of an operator comprises a shaft 1 secured in the ground, a drum rotatably mounted on the shaft and means for securing the drum against rotation. As shown, the drum has a number of apertures 6 in its upper and lower flanges 3 and 4 preferably arranged in rings of differing diameter into which members 7 are inserted. The drum is rotatably mounted on the shaft 1 by a sleeve 9 the upper end of which has a step adapted to engage a step in a slidable sleeve 11 having a slot 8. A pin 10 extends through the slot 8 and through the shaft 1, the arrangement being such that the sleeve 11 may be raised to permit free rotation of sleeve 9 or lowered so that the two steps engage to stop the drum rotating. A stop 12 prevents the sleeve 9 from sliding down the shaft. One end of a line 5 is secured to the drum, the other end at a point near the front of a power driven mowing machine so that when the machine is set in motion it cuts a spiral path, with the shaft as centre, as the line runs off the drum. Alternatively, with the drum locked, the mower may be made to spiral inwardly as the line runs on to the drum.
Patent GB-393318-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H03G3/22
Filed: 1931-12-02
Abstract: 393,318. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand. London, and ARMSTRONG, R. B., 130, Wood Street, Chelmsford, Essex. Dec. 2, 1931, No. 33460. [Class 40 (v).] In a valve amplifier in which the gain is controlled automatically by varying voltage, the varying voltage is produced by a resistance whose magnitude varies in dependance upon received signal strength. The Figure shows a valve 19 which serves as the biasing resistance of the amplifying valve 3 and whose bias is derived from the detector. A separate detector in parallel to the normal signal detector, Fig. 3. (not shown) may be used. The Provisional Specification describes modifications in which the bias of the amplifying valve is derived from a fixed resistance connected between the detector cathode and the anode supply source, the detector being either the normal detector or separate detector connected in parallel. In further modifications an auxiliary screen-grid valve is used and the voltage across a resistance in the detector valve is applied to the screening grid, the current through the screen-grid valve passing through a resistance the voltage across which controls the bias of the controlled amplifying valve. In further arrangement the detector current passes through a resistance the voltage across which provides the screen-grid voltage of the controlled amplifying valve, or the voltage across the resistance may be amplified by screen grid valve before being used as the controlling voltage.
Patent GB-426191-A (GB)
Title: Production of mica covered papers and means therefor
IPC: D21H19/00
Filed: 1934-11-21
Abstract: 426,191. Coated fabrics ; paper. BRISE, H. R. RUGGLES-, Northrepps, Norwich. Nov. 21, 1934, No. 33491. [Classes 96 and 140] Mica-covered paper is obtained by partly immersing a tightly wound roll of paper in a trough containing liquid adhesive such as liquid paper-size, drawing the paper off the roll and passing it upwards along an inclined course to allow excess adhesive to drain back, turning it with the coated side upwards on to a conveyer slightly inclined to the horizontal, and, after the adhesive has become uniform over the surface, showering mica flakes over the adhesive coating as the paper is carried on to the drying stage. The mica flakes may be manually or mechanically showered. Dyes may be incorporated in the adhesive solution. The coated paper is preferably dried while in festoon form. As shown a roll of paper 2 mounted in bearings 4 dips into liquid adhesive contained in a trough 1. The paper is drawn off the roll and passes upwardly to a conveyer belt 7 inclined by about 5‹ to the horizontal. Mica flakes are distributed from a hopper 8 mounted above the belt 7. The hopper has a side outlet 9, and a roller 10 rotates so as to cause mica flakes to be centrifuged through the outlet 9 and showered over the paper. The side of the hopper which contains the outlet 9 is vertical and the opposite side is sloped so as to cause the flakes to fall automatically by gravity to within the influence of the roller 10. The paper may be used for wall-paper or for heat and electrical insulation purposes.
Patent GB-506810-A (GB)
Title: Improvements in or relating to looms with stationary weft supplies
IPC: D03D35/00
Filed: 1937-12-03
Abstract: 506,810. Looms with stationary-weft supplies. CLUTSOM, C. Dec. 3, 1937, No. 33503. [Class 142 (ii)] Selvedge - forming arrangements.-In a shuttleless loom having a weftlaying member adapted to carry the weft to and fro through the or each shed and a thread-engaging element co-operating with the weft-laying member to form a selvedge, means are provided to hold back the previously formed portion of the selvedge on the thread-engaging element when the latter is moved to take the appropriate thread. The invention is particularly applicableto looms of the form described in Specification 478,529 in which a reciprocating latch needle 2, Fig. 4, engages each loop of weft and draws it through the preceding loop. According to the invention a pin 14 is raised in front of the weft loop f<1>, Fig. 8, when the needle advances to receive the next loop. The pin 14 is carried by a member 15, pivoted at 17 and formed with a cam-slot 16 traversed by a pin. 10 on the needle bar. Instead of being positively actuated in both directions, the member 15 may have single cam surface kept in contact with the pin 10 by a spring or it may be actuated independently of the needle bar. In a modification, an additional thread is supplied to the needle to form a selvedge of the form described in Specification 119,558, [Class 142. (ii)].
Patent GB-1012094-A (GB)
Title: Improvements in or relating to template-holders for machine tools
IPC: B23Q35/46
Filed: 1962-08-31
Abstract: 1,012,094. Copy-turning. EDOUARD DUBIED ET CIE S.A. Aug. 31, 1962 [Sept. 1, 1961], No. 33603/62. Heading B3T. A twin copying template holder comprises means 4a, 4b for mounting the holder between centres 2a, 3a and means 11, 11<SP>1</SP> for automatically changing from a roughing to a finishing template. The templates are clamped on a bar 48 located between centres 19a, 35a, the latter being releasable by a manually-controlled lever 43. The bar 48 is rocked to change the operative template by the pistons 11, 11<SP>1</SP> which engage a rocker arm 18 held in each position by a toggle arrangement 24.
Patent GB-894343-A (GB)
Title: Improvements relating to seats having means for adjusting the height thereof
Inventor: HARRISON JOHN
IPC: B60N2/04
Filed: 1959-10-05
Abstract: 894,343. Seats. CHAPMAN Ltd., A. W. Sept. 16, 1960 [Oct. 5, 1959], No. 33706/59. Class 52(2) In a vehicle seat mounted on two pairs of crossed-links 15, 16, vertical adjustment is effected by longitudinal motion of wedges 32 along screw-threaded shaft 39. Pivots 17 are constrained by lugs 36, sliding with line contact on flanges 34 of wedges 32, to move vertically towards and away from frame 2 and thereby to adjust the height of the seat. Link supporting lugs slide with line contact in guides 20, 21. Guides 21 and lugs 19 are mounted on sliders 6 which are secured in position on guides 8 by a pivotable dog 12 engaging holes 13.
Patent GB-521431-A (GB)
Title: Improvements in or relating to pockets for garments
IPC: A41D27/20
Filed: 1938-11-19
Abstract: 521,431. Pockets for garments. ELLIS (LEEDS), Ltd., and EATON, C. Nov. 19, 1938; No.-33713. [Class 141] To enable pens, pencils &c. to be retained in an upright position in a pocket for vests, jackets &c. while still enabling the pocket to be used for carrying other articles, a strip of material 4 is sewn to the garment 1 within the patch pocket 2, and is further secured by lines of stitching 5, or by clipping, to form a number of divisions, each adapted to retain a pencil &c. 6. If the pocket is lined, the strip 4 is sewn to the lining material. In a modification, the divisions may be formed as a complete pocket instead of a strip.
Patent GB-1082055-A (GB)
Title: Breast frames for brassieres and similar garments and methods of making the same
IPC: A41C3/12
Filed: 1964-08-18
Abstract: 1,082,055. Brassiere frames. R. F. ROWELL. Aug. 18, 1964, No. 33713/64. Heading A3V. [Also in Division B2] An arcuate brassiere frame portion comprises a resilient metal core 17, having at least one plane surface in cross-section, coated with a liquid polymeric material 16, e.g. a plastisol or latex, which has a surface 18 of continuously curvilinear configuration at least where it covers the ends of the or each plane surface. A core of rectangular cross-section may be preheated to between 300 and 1000‹F. and immersed in a plastisol based on polyvinylchloride, the coated core being heated to 500-1000‹F. to set the coating on the core. Tips are formed on the ends of the frame by dipping the ends in epoxy resin which may extend over the polymer coating. If a latex coating is used, based e.g. on butadiene, styrene or neoprene, preheating; of the core can be omitted. A pigment e.g. titanium oxide and a deodorant may be incorporated in the coating. The whole frame may be coated or only a part 21, Fig. 5.