baber/WOPTO huggingface dataset:
Patent GB-1276297-A (GB)
Title: Electro-hydraulic or electro-pneumatic valve system
Inventor: SHORE ANTHONY GEORGE LITHGOW
IPC: F16K31/08
Filed: 1968-06-26
Abstract: 1276297. Valves DOWTY TECHNICAL DEVELOPMENTS Ltd 24 June 1969 [26 June 1968] 30405/68 Heading F2V An electrically-operated fluid-pressure reducing valve comprises a moving coil unit 32 carried in a magnetic structure 34 which provides a magnetic field across the gap 33, a nozzle 31 connecting with a source of fluid pressure through a fixed restrictor 41, an obturator 29 connected to the unit 32 to vary the fluid pressure in a space 38 between the restrictor and nozzle in accordance with the clearance between the obturator and nozzle, a pair of windings A, B forming part of the unit 32, and an electric supply having two circuits connected one to one winding and the other to the other winding so that forces are induced in the coil unit, and means for adjusting the current in one or both windings. In the embodiment described, the pressure in the space 38, together with that in and a similar space 37, moves spool valve 3 to control, e.g., a double-acting ram connected with the passages 12, 13 and supplied with fluid from a source connecting with a passage 14. In Fig. 3, windings C, D are wound on a moving coil unit 26, and two transistors 62, 63 form the output stages of an amplifier, the bases of which are supplied with voltages from a control signal source to vary the flow of current through windings A, D and B, C, disposed, respectively, in two separate circuits to produce opposing forces which move the obturators 24 and 29 and control the pressures in spaces 37, 38 respectively. In Fig. 4 (not shown), the two circuits are each fed by an amplifier, and if the supply to one circuit fails an automatic switch device switches to the other circuit so that control may still be provided.
Patent GB-1135655-A (GB)
Title: Polyolefin compositions
IPC: C08L23/02
Filed: 1966-07-06
Abstract: 1,135,655. Polyolefin compositions. TOYO BOSEKI K.K., and SUMITOMO CHEMICAL CO. Ltd. 6 July, 1966 [8 July, 1965], No. 30420/66. Heading C3P. [Also in Division D1] Mouldable compositions comprise (1) a polymer or copolymer of an ethylenically unsaturated hydrocarbon and (2) a copolymer of ethylene, at least one of acrylamide, methacrylamide and a N-mono- or N,N-di-hydrocarbon substitution product thereof and at least one other ethylenically unsaturated compound. The hydrocarbon polymer may be a polymer of ethylene, propylene, butene-1, 3-methylbutene- 1, 4-methylpentene-1, styrene, butadiene or isoprene, or a copolymer of ethylene and propylene, ethylene and butene-1 or propylene and butene-1. The copolymer may be derived from acrylamide, methacrylamide or N-substitution products thereof, and styrene, vinyl esters, vinyl ketones, vinyl ethers, acrylic and methacrylic acids, esters and nitriles, vinyl halides and vinyl heterocyclic compounds. The compositions may also comprise stabilizers, e.g. alkylphenols, benzophenones, thioethers of carboxylic acid esters and metal salts of fatty acids, and may be made into articles such as films and fibres having improved dyeability. Examples describe the spinning of dye receptive fibres from compositions comprising polypropylene and (1 to 3) ethylene/N,N-dimethyl acrylamide/vinyl acetate copolymers, (4) ethylene/N,N-diethyl acrylamide/methyl acrylate copolymers, (5 and 6) ethylene / N,N - dimethyl acrylamide / N,N - diethylaminoethyl acrylate copolymers and (7) ethylene / N,N - dimethyl acrylamide / styrene copolymers.
Patent GB-466884-A (GB)
Title: Process of modifying the properties of rubber latices
IPC: C08C1/06
Filed: 1935-11-04
Abstract: Rubber or like latex is stabilized by the addition of the serum, or the material intermediate between the serum and the latex, derived from a more stable latex furnished by a different plant species.  For example, Hevea latex may be stabilized by the serum of Abariana or Funtumia latex.  The latex so stabilized may be coagulated by the process described in Specification 466,885.
Patent GB-668219-A (GB)
Title: Improvements in or relating to relay station apparatus for use in telecommunication systems
IPC: H04B7/155
Filed: 1949-11-28
Abstract: 668,219. Carrier transmission. GENERAL ELECTRIC CO., Ltd., ASPIN, J. J. E., and STOVE, J. P. Nov. 28, 1950 [Nov. 28, 1949], No. 30470/49. Addition to 660,469. Drawings to Specification. Class 40 (iv). [Also in Group XL (c)] In a modification of the invention of the parent Specification, for signalling purposes, operation of a telephone dial or other switch boosts the depth of modulation of the carrier, already modulated by the received supervisory or other tone, to two or three times its original value when the contacts close. The switch is included in a circuit receiving a portion of the demodulated tone and feeding a modulator of the re-transmitter.
Patent GB-465277-A (GB)
Title: Process for the refining of metallic magnesium or its alloys
IPC: C22B26/22
Filed: 1935-11-04
Abstract: Magnesium and magnesium alloys are refined by intimately mixing the molten metal with a solid reagent consisting of one or more fluorine compounds which at the melting or casting temperature decompose or vaporize with the liberation of a gas or vapour.  The following reagents are referred to: fluosilicates, fluoborates, ammonium fluoride, ammonium bifluoride, ammonium silico-fluoride.
Patent GB-868101-A (GB)
Title: Improvements in or relating to pressure exchangers
Inventor: BARNES JOHN ANTHONY
IPC: F04F13/00
Filed: 1958-09-24
Abstract: 868,101. Pressure-exchangers. POWER JETS (RESEARCH & DEVELOPMENT) Ltd. Sept. 17, 1959 [Sept 24, 1958], No. 30512/58. Drawings to Specification. Class 8(1). A pressure exchanger having a shrouded rotor in a rotor casing has labyrinth sealing means effective between the rotor and the casing to restrict the flow of working fluid in the circumferential direction. The sealing means may be provided between the adjacent peripheries or end faces of the rotor and casing. Additional sealing means may be provided to restrict axial leakage. Specifications 722,609 and 775,271 are referred to.
Patent GB-477647-A (GB)
Title: Improvements in golf clubs
IPC: A63B53/12
Filed: 1936-11-09
Abstract: 477,647. Golf clubs. BYRNE, E. L. W. (Kroydon Co., Inc.) Nov. 9, 1936, No. 30547. [Class 132 (ii)] The tubular metal shaft 1 of a golf club has a longitudinally grooved portion 10 formed therein and extending for a relatively small length between the handle and the head of the club. The shaft is preferably of uniform taper and the grooves symmetrical and of uniform depth. Specification 389,353 is referred to.
Patent GB-460322-A (GB)
Title: Improvements in or connected with conveyors of the belt type
IPC: B65G45/00
Filed: 1935-11-05
Abstract: 460,322. Endless - belt conveyers. MAVOR & COULSON, Ltd., and THOMPSON, J. Nov. 5, 1935, No. 30550. [Class 78 (i)] In an endless-belt conveyer spillage from the top run A on to the lower run is cleared therefrom by a deflector B and directed into the path of the scraper elements 4 of an endlesschain elevator which forms a circuit around the lower and top runs. The scraper-type elevator may be replaced by one of the endlesschain bucket type or by one of the bucket wheel type. Specifications 298,788, [Class 78 (i)], and 428,056 are referred to.
Patent GB-241752-A (GB)
Title: A process for the separation of vapours by absorption
IPC: B01D53/18
Filed: 1924-12-19
Abstract: 241,752. Lemale, P. C. Dec. 19, 1924. Alcoholic liquids, distilling; volatile liquids, recovering. - Alcohol vapour is dehydrated by heating it with an absorbent in an atomized state. The absorbent supplied through a tube D is atomized by a centrifugal pump c provided with multiple jets which direct the liquid across a mixing chamber B into an annular exit pipe C<3> thus producing a vacuum which draws in the alcohol vapour through a tube A. The dehydrated vapour passes off through a pipe F while the absorbent with the water condenses in the bottom of a vessel E from which it is passed to a vacuum still H for regeneration the vacuum being main. tained by a hand pump P. The regenerated absorbent is exhausted by a pump K and returned to the mixing chamber B.
Patent GB-1105029-A (GB)
Title: Improvements in or relating to methods and apparatus for drawing synthetic polymer tapes and products thus obtained
IPC: B29C55/06
Filed: 1965-07-19
Abstract: 1,105,029. Films and tapes. SAINT FRERES. 19 July, 1965 [14 June, 1965], No. 30659/65. Heading B5B. Synthetic polymer tapes are drawn between a series of feed rollers 2, 3 and a series of withdrawal rollers 11, 12 driven at a peripheral velocity higher than that of the said feed rollers, the ratio of the peripheral velocities of said feed and withdrawal rollers providing the overall drawing rate, characterized in that, between said series of feed rollers and said series of withdrawal rollers, said tapes are caused to pass over a series of intermediate heating rollers 6, 7, 8, 9, 10, brought to a temperature below the softening point of the synthetic polymer to be drawn, up to not less than 10‹ C. below this softening point in the case of polyolefines, said intermediate rollers being driven at a peripheral velocity increasing gradually from one roller to the next roller in the tape feed direction, and lying between that of said feed rollers and that of said withdrawal rollers, the ratio of the peripheral velocities of any pair of adjacent intermediate rollers being less than 2: 1. The gradual drawing of the tapes may be controlled by changing the number of said intermediate rollers and adjusting the speed ratio on the successive rollers. The greater the number of intermediate rollers and the lower the partial drawing rates, the more gradual the drawing effect. Thus in the case of polyolefines, at least five intermediate rollers may be used. Other synthetic polymers which may be used include polyamides, polyesters and polyvinyl resins. Preferably, the intermediate rollers are disposed in staggered relationship and the tapes caused to follow a zigzag path while contacting said intermediate rollers. Suitably an extruded film is cut into tapes or strips as it is delivered from the series of feed rollers 2, 3 by cutting device 4. The intermediate rollers may be heated to temperatures increasing gradually from one roller to the next, so as gradually to heat the tape. Suitably the intermediate rollers are heated electrically or by circulation of a hot fluid in contra-current to the direction of tape feed. Tapes having a thickness of less than 0.040 mm. and having a width to thickness ratio greater than 50 and especially above 150 may be made by the method of the invention.
Patent GB-1000922-A (GB)
Title: Improvements in sewing machines
IPC: D05B27/22
Filed: 1963-08-02
Abstract: 1,000,922. Sewing machines. H. PARKINSON, and G. F. D. SWAYSLAND, [trading as ROSSENDALE SEWING MACHINE CO.] July 20, 1964 [Aug. 2, 1963], No. 3066/63. Heading D1G. In a sewing machine, the head b of a feed regulating spindle B is formed with an internal thread b<SP>1</SP> to engage a screw thread a<SP>2</SP> on a concentric arm shaft a, rotation of the spindle relatively to the shaft adjusting the throw of an eccentric C, actuating a connecting rod C, to vary the stitch length. Screw thread b<SP>1</SP> is formed in a press-fitted sleeve b<SP>2</SP>. The tapered end b<SP>3</SP> of spindle B engages a screw c carried by the eccentric C.
Patent GB-1451232-A (GB)
Title: Optical guidesd
IPC: H01B7/17
Filed: 1973-06-28
Abstract: 1451232 Light guides BICC Ltd 27 June 1974 [28 June 1973] 30856/73 Heading G2J An optical guide comprises one or more optical fibres, and a compressible material, e.g. polyethylene, associated with the fibre(s) so that, should the guide be stressed in such a way as to subject the fibre(s) to a tensile force, the fibre(s) can move transversely of the guide and compress the material. The fibres may be of the glass core and cladding kind, or may be hollow and filled with a liquid, or may be of the kind having radially varying refractive index. The compressible material may comprise one or more elongate members interspersed with the fibres, see Figs. 2, 5 (not shown). In specific embodiments the polyethylene comprises a layer about a reinforcing core about which the fibres are stranded, a sheath about the stranded fibres, and a cladding for the individual fibres, Fig. 3 (not shown), and may fill the space between the reinforcing core and the fibres, Fig. 4 (not shown). In further embodiments, Figs. 5, 6 (not shown), bundles of fibres are stranded about a reinforcing core. Rubber may be substituted for polyethylene, and where the compressible material is an elongate member or members, petroleum jelly may fill the interstices of the guide or cable.
Patent GB-446425-A (GB)
Title: Manufacture and application of a new copper-containing azo dyestuff
IPC: C09B33/10
Filed: 1934-10-29
Abstract: The copper compound of the disazo dyestuff 6 - chloro - 2 - aminophenol - 4 - sulphonic acid \sQ 5 : 5<1> - dihydroxy - 2 : 2<1>-dinaphthylamine-7 : 7<1>-disulphonic acid is made by treating the dyestuff with copper or an agent yielding copper, e.g. copper sulphate.  It dyes cotton in violet shades of excellent fastness to light.  Specifications 1611/15 and 12932/15, [both in Class 2 (iii)], are referred to.
Patent GB-796512-A (GB)
Title: Process for recovering an antibiotic nystatin
Filed: 1955-10-31
Abstract: Nystatin is recovered from an aqueous streptomyces noursei fermentation broth by adding to the whole broth a water-miscible organic solvent which is isopropanol, n-propanol, ethanol, methanol, or acetone, filtering the resulting mixture, removing the water-miscible solvent from the filtrate and recovering the resulting nystatia precipitate.  After adding the solvent to the broth, it is preferred to adjust the pH to 4 to 6 and especially 4.5 to 5.5 by acids such as phosphoric to assist the solubilization of the nystatia in the aqueous solvent and then to adjust the pH to 6.5 to 7.5 and especially 7 by means of alkali such as sodium hydroxide in order to precipitate impurities which are filtered off.  It is preferred to remove the solvent under vacuum at a temperature of up to substantially 30 DEG  C. Specification 714,189 is referred to.
Patent GB-810861-A (GB)
Title: Improvements in or relating to sealing or closure arrangements for vessels or tubes
Inventor: FOXON HENRY JAMES
IPC: F16K51/02
Filed: 1954-10-28
Abstract: 810,861. Stopping pipes. GENERAL ELECTRIC CO. Ltd. act. 26, 1955 [Oct. 28, 1954], No. 31194/54. Class 99(1). [Also in Group XL(a)] A tube or vessel, particularly the tank of a steel clad mercury arc rectifier after pumping, is sealed by a ball around which the tube or neck of the vessel forms a shrink fit. In the construction shown in Fig. 1 the closure of the tube 2 is effected by expanding the steel collar 3 by heat and shrinking it on to the flange 4 of the tube 2 and steel ball 1 by cooling. The flange 4 has a 1 degree taper on its inside. In the construction shown in Fig. 2 the steel collar 3 is omitted and the end of the tube 2, which is tapered on the inside and has an enlarged head 9, forms a shrink fit on the ball 1. The steel ball 1 can be coated with a metal such as gold.
Patent GB-193162-A (GB)
Title: Improvements in means for securing and releasing railway carriage doors, also serving as window guards
IPC: E05F13/00
Filed: 1921-11-22
Abstract: 193,162. Iles, J. M., and Lawson, V. A. Nov. 22, 1921. Safety-guards.-Relates to apparatus actuated by racks at the ends of station platforms for automatically locking carriage doors when a train leaves a station and unlocking the doors when the train enters another station. According to the invention, the apparatus, which also protects the carriage windows, comprises vertical bars b<2> suspended from a sliding T-shaped bar b and secured at their lower ends to horizontal bars b<3> which slide in guides b<4>. When the train leaves a station, a rack g at one end of the platform engages and rotates a pinion d<2> on a vertical shaft d on the carriage, and the rotation is transmitted to another pinion d<1> at the top of the shaft in mesh with a rack b<1> on the T-shaped barb. The frames of bars b<2>, b<3> are thus moved across the doors A, locking them and guarding their windows. When the train enters a station, a rack such as g at that station engages and rotates the pinion d<2> in the opposite direction, restoring the bars to the position shown, in which the doors are unlocked. The shaft d may be lifted to put the pinions d<1>, d<2> out of reach of their respective racks, an arm d<6> being loosely mounted for this purpose between two collars e, e<1> on the shaft d and adapted to be moved from a recess f<2> into another recess f<1> in a block f covered by a swing plate f<3>.
Patent GB-1314548-A (GB)
Title: Electrolytic furnaces
IPC: C25C3/08
Filed: 1970-06-26
Abstract: 1314548 Electrolytic furnaces MONTE. CATINI EDISON SpA and G DE VARDA 26 June 1970 [30 June 1969] 31216/70 Heading H5H  A muiticell electrolytic furnace for the production of aluminium has a plurality of bipolar electrodes 5 suspended in the furnace with their active surfaces at an acute angle of more than 45 degrees to the vertical. The active surface 8<SP>1</SP> of terminal anode 8 and the active surface 9<SP>1</SP> of terminal cathode 9 are also inclined at the above angle. The furnace floor has steps 1 leading down to a central collecting pit for Al, 4. The bath 6 is an alumina/cryolite bath with additives of titanium trifluoride and calcium and magnesium compounds.
Patent GB-262801-A (GB)
IPC: B02C4/42
Filed: 1926-12-09
Abstract: 262,801. Krupp Grusonwerk Akt.- Ges., F. Dec. 9, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Roller mills. - The rollers are driven by means of a pair of gear wheels mounted in a fixed manner, through an articulated connection of elastic construction, universal joint, rocking pin, or the like. As shown, the rollers 4, 5 are driven from the driving-shaft 1 through a pair of wheels 2, 3 and two coupling- spindles 6, 7 of elastic construction. When one only of the rollers is elastically mounted, the coupling-spindle of that roller only need bo elastic.
Patent GB-428294-A (GB)
Title: Improvements in or connected with electron discharge devices and circuit therefor
IPC: H02K27/04
Filed: 1933-11-10
Abstract: 428,294. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London.-(Assignees of Demarest, C. S. ; 192, Unadilla Road, Ridgewood, New Jersey, and Holden, W. H. T.; 57, Lincoln Road, Brooklyn, New York, both in U.S.A.) Nov. 10, 1933, No. 31385. Convention date, Nov. 10, 1932. [Classes 39 (i) and 40 (v)] A pentode has two coplanar control grids 14, 15, Fig. 1. They are of the same size, and slightly staggered, and the leads are connected to caps G<1>, G<2>. The screen grid 13 and suppressor grid 12 are mounted between the control grids and the anode 11 ; the cathode 16 may be indirectly heated. An amplifier-detector circuit is shown in Fig. 3. The ends of the secondary of the input transformer 21 are connected with the control grids 14, 15 and the mid-point is connected with the cathode 16 through a resistance 23 shunted by a condenser 24, the reactance of the condenser being large compared with the resistance 23 for voice frequencies but negligible in comparison with the resistance for the carrier frequency. The carrier may be supplied locally by a generator 22. The Specification, as open to inspection under Sect. 91, comprises also the use of the tube as a diode, triode, or tetrode. This subject-matter does not appear in the Specification as accepted.
Patent GB-1470008-A (GB)
Title: Pump units
IPC: F04C29/06
Filed: 1974-07-16
Abstract: 1470008 Electric motor and pump unit: coupling shaft to pump rotor ROBERT BOSCH GmbH 16 July 1974 [17 July 1973] 31385/74 Heading F1F A rotor 17 of a single chamber radial vane pump 2 is connected to a drive-shaft 4 by a coupling member 23 having square end-faces 24, 25 and axially extending side surfaces of part cylindrical section 26' so that it can pivot about two axes which are perpendicular to one another and to the axis of rotation of the pump unit. The member 23 is received within a bore of square shaped crosssection in the rotor 17. The shaft 4 has two opposed key faces 28 which are received in a correspondingly shaped bore in the member 23. The pump is connected to one end of a D.C. electric motor 1 and a stopper 36 of a foam material is disposed in it's outlet connecting socket to reduce noise.
Patent GB-1389087-A (GB)
Title: Cassette for a recorder tape
IPC: G11B23/087
Filed: 1972-07-05
Abstract: 1389087 Tape cassettes SIDEN (SOC INDUSTRIELLE DE DEVELOPPEMENT ELECTRONIQUE ET NUCLEAIRE) 5 July 1972 [7 July 1971 14 June 1972] 31511/72 Heading G5R In a cassette 1, two spools 8, 10 with different sized bores are rotatably mounted on either side of a partition wall 1a by means of two sets of ball bearings 12, a part of the hub of spool 9 encircling a part of the hub of spool 10 and thereby forming a cage for a third set of balls 14 when a nut 15 is tightened; coaxial positioning of the spools is thus ensured, and axial play minimized. The cassette is provided with obliquely inlined/ axially inclined supports (2, Fig. 1, not shown), for rollers 3 for guiding recording tape in its path within each compartment, and also from one compartment to the other. The spools are driven in a machine having coaxial hollow-solid spindles (44, 46) as described with reference to Fig 3 (not shown).
Patent GB-941406-A (GB)
Title: Improvements in or relating to photo-electric tracking devices
Inventor: BARBER CLIFFORD CHARLES
IPC: B23Q35/128
Filed: 1960-09-13
Abstract: 941,406. Photo-electric curve followers. H.M'S PRINCIPAL SECRETARY OF STATE FOR THE WAR DEPARTMENT, LONDON. Sept. 12,1961 [Sept. 13,1960], No. 31522/60. Heading G1A. The invention relates to a photo-electrically controlled tracking device characterized in that the photo-cell controlling the movement of the device is influenced by light passing through a triangular slit, the device being controlled to maintain the part of the path being followed parallel to and a fixed distance from the base of the triangle. In both embodiments disclosed (Figs. 1 and 3) the tracking device is a tricycle having two fixed wheels 6, 6 and a wheel 11 steered in response to the amplified photo-cell output by a cord and pulley system 13 and driven by a motor within the casing 12. In one arrangement Fig. 1 the path 29 to be followed is drawn on a plate 28 fixed above the tricycle. Light from a lamp 21 carried by the tricycle is reflected from the half silvered mirror 23 on to the path 29 and back through the mirror 23 on to the slit 18 behind which is the photo-cell. In the second arrangement (Fig. 3) the tricycle is mounted on a table 42 which is freely movable in a horizontal plane by means of slots and rollers as shown. The path to be followed is drawn on a translucent extension 56 of this table, the light being transmitted through the translucent extension and directed by mirrors 51, 52 and erecting prism 60 on to the triangular slit 18.
Patent GB-277207-A (GB)
Title: Improved life buoy
IPC: B63C9/06
Filed: 1926-12-13
Abstract: 277,207. Rautenberg, F., and Beinhof, A. Dec. 13, 1926. No Patent granted (Sealing fee not paid). Buoys.-Lifebuoys b are loosely placed on board a ship a and are of the type having a large hollow body for containing persons, a manhole g at the upper portion, air funnels h, and portholes k, a signal post i, and a rope attachment d to the ship. According to the invention the rope d is provided with cork floats e along its length and spring coils f at its ends, which are threeparted. The floats take the weight of the rope when the buoy is in use while the springs compensate for the action of a rough sea.