baber/WOPTO huggingface dataset:
Patent GB-1035090-A (GB)
Title: Zone-by-zone melting of semi-conductor material
IPC: C30B13/16
Filed: 1965-06-04
Abstract: In the floating zone-melting of a vertical rod of semi-conductor material using a pancake or cylindrical induction coil, there is provided an additional induction coil which overlaps each side of the molten zone and is of sinuous form having a plurality of vertical portions connected together alternately at the top and bottom.  The two coils may move as one or relatively to one another.  The molten zone may have a width of 5-15 mm.  The additional coil may have a length of 5-10 cm.
Patent GB-717560-A (GB)
Title: Improvements in or relating to venetian blinds
IPC: E06B9/308
Filed: 1952-09-25
Abstract: 717,560. Venetian blinds. ROLLADENFABRIK A. GRIESSER AKT.-GES. Sept. 25, 1952 [Sept. 27, 1951], No. 24098/52. Class 20 (3) A venetian blind comprises an upwardly open casing 1, Fig. 1, having brackets 3 in which a shaft 2 is rotatably carried, a pair of winding spools 13 fixed to the shaft, each spool carrying a thin steel lifting ribbon 15, which passes through each slat 11 and is attached to the bottom one, and a -tilting member 7, 8, 9, associated with each spool 13 for varying the angular disposition of the slats 11. On turning the bevel gear 4 by a hand crank (not shown), the shaft 2 is rotated through a friction clutch 5 as in Specification 670,931. To lift the b ind, the shaft 2 is rotated in the direction a, Fig. 3, thus turning, through friction lining 23, a :forked member 22 which engages a pin 21 on the arm 9 of tilting member 7, 8, 9. The ladder tapes 10, which are carried by the cylindrically curved piece 8 thus tilt the slats 11 as shown. When arm 7 abuts the left :hand one of pair of stops 25 on a bracket 3, the tilting member 7, 8, 9 remains stationary whilst the shaft 2 and spools 13 rotate. To alter the angular position of the stats the shaft 2 is reversed, the tilting member 7, 8, 9 being carried with the shaft until arm 7 abuts the right hand stop 25. Further rotation of the shaft then lifts the blind. The members 7, 8, 9 are coupled by a sleeve 6. When the blind is completely lowered a spring pressed pin 18, Fig. 7, in one of the winding spoots 13, which is normally retracted by ribbon 15 is released so that a pair of bolts 20 carried by the pin 18 and sliding in radial slots 19 of the winding spool flanges project to abut the piece 8 and prevent ribbon 15 from winding up on the spool 13 in the wrong direction. In a modification the shaft 2 has an increased diameter where it is engaged by the friction lining. In a further form, a rope chain or band operates a pu ley on the winding shaft instead of the hand crank and gear 4, members 17-20 then being omitted. In another embodiment; Fig. 8, in which the shaft 2 is rotated through a spool 26 and operating tape (not shown) the tilting members 7, 8, 9 are rigid with sleeves 27, 28. The sleeve 27 has a square portion 29 engaging a sleeve 6 which is similarly coupled to the second tilting member 7, 8, 9 (not shown) and the sleeve 28 has a square portion 33 engaged by a pair of arms 36 of a member 35. Two more arms 38 of member 35 engage, through friction lining 39, a collar 34 which is rigid with the shaft. The rotation of the tilt member 7, 8, 9 is limited by a stop 30 thereon engaging abutments such as 32. In a modification the friction coup:ing comprises a steel band passing around the collar on the shaft 2 one end of the band being attached to a pin carried by a clamp fixed to the square portion of sleeve 28.
Patent GB-890662-A (GB)
Title: Improvements relating to vacuum brake cylinders for vehicle brakes
Inventor: SHATTOCK CHARLES FREDERICK BAY
IPC: B60T13/48
Filed: 1959-07-14
Abstract: 890,662. Pistons. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. June 29, 1960 [July 14, 1959], No. 24108/59. Class 122 (1). [Also in Group XXXIV] In a diaphragm-operated vacuum brake cylinder of the kind in which the reciprocating movements of the diaphragm 4 and of upper (7) and lower (8) members clamping it are transmitted to a piston-rod 11 connected to the vehicle brake rigging, the pistonrod is provided with retaining- means holding the piston-rod in position relatively to the clamping members and diaphragm so that the diaphragm is clamped around its inner periphery forming a fluidtight joint between the upper and lower diaphragm clamping members and the diaphragm. In the embodiment shown in Fig. 8 upper and lower clamping numbers 7 and 8, respectively, of sub stantially conical shape clamped between them a diaphragm 4 which is provided [with a boss 23 engaging a hole 25 in the lower clamping member 8, the boss and hole being arranged in a given angular relationship with respect to an eye end of the piston-rod 11 such that the piston-rod can only be assembled in the correct angular relationship with respect to the outer periphery of the diaphragm and with the trunnions 2 forming suspension means for the brake cylinder 1. The retaining means shown in Fig. 8 comprise a castellated nut 14 screwed on to the screwed end of piston-rod 11 to bear against a cover washer 16 to clamp the upper clamping member 7 against the lower member 8 with the diaphragm 4 between the members. After the piston-rod has been correctly, orientated, a split-pin 14a is passed through castellations in the nut to lock the nut in position. Fig. 1 shows an alternative arrangement for the retaining means whereby the upper and lower clamping members 7 and 8 are retained in position by means of a boss welded to the bottom clamping member and retained on the end of the piston-rod by means of a nut 14; a cover 16 being provided with a flange 17 which is disposed to compress the upper clamping member against the diaphragm 4 and the lower clamping member by means of retaining bolts or studs 18 holding the cover against the boss 9. The retaining means employed in the invention serve to form a fluid-tight joint between the diaphragm and the clamping members without the need of further clamping or retaining means such as would necessitate holes through the diaphragm 4 or through the clamping members. Alternative retaining means is disclosed in Specification; for example a modification (not shown) discloses the cover formed as an integral part of the upper diaphragm clamping member. Specification 738,069 is referred to.
Patent GB-958648-A (GB)
Title: Improvements in or relating to the manufacture of mouthpiece cigarettes
IPC: A24C5/47
Filed: 1959-07-14
Abstract: 958,648. Making and applying cigarette filters. D. W. MOLINS, T. ROWLANDS, and MOLINS MACHINE CO. Ltd. July 13, 1960 [July 14, 1959], No. 24143/59 Heading A2C. Mouthpieces cut from a continuous rod are axially forwarded by a wheel 3 into successive flutes of a drum 4 alternate flutes of which have stop members so that successive pairs of mouthpieces on the drum are spaced apart axially by a little more than the length of double-length cigarettes delivered by swinging arms 7 from a drum 6 into the flutes containing lagging members of mouthpiece pairs, the leading members of which are subsequently brought into alignment with the cigarettes and lagging members by a fixed countersurface 11 rolling them from the dotted line position 13 to the solid line position 12 on a drum 9 to which they are all transferred. The mouthpieces are then closed up on the cigarettes by end guides (not shown) and the resulting assemblies are passed by drums 14, 15 to a rolling passage 16, 17 in which each of them is united by a pair of narrow gummed strips 20, the united assemblies passing via conveyers 21, 22, 24 to a drum 25 along the flutes of which they are blown by an air jet to a position in which they are each subdivided into two mouthpiece cigarettes for delivery in two separated rows to a conveyer band which may have means for turning the cigarettes of one row end-for-end. The mouthpiece rod is made from a stiff paper strip coated with heat-sealing adhesive on to which double-length stubs are placed at intervals before the strip is formed into a lapped tube which is cut at and between the stubs so that each mouthpiece contains a single-length stub at the end which is eventually presented to a double-length cigarette. The Provisional Specification describes apparatus in which mouthpieces cut from a similar rod have the stubs, which are retained by a slow-drying adhesive or by friction only, pushed along them by a plunger to allow insertion of a cigarette which is retained by adhesive supplied by ducts in the plunger. Either the cigarette or the mouthpiece may be moved to effect insertion; if the latter, two mouthpieces may be simultaneously applied to the ends of a double-length cigarette which is subsequently divided into two mouthpieces cigarettes. Specifications 807,404, 875,330 and 900,387 are referred to.
Patent GB-1145799-A (GB)
Title: Beryllium-silver copper composite
IPC: C22C1/04
Filed: 1967-05-25
Abstract: 1,145,799. Sintering of Be-Ag-Cu alloys. MALLORY METALLURGICAL PRODUCTS Ltd. May 25, 1967 [May 31, 1966], No.24405/67. Headings C7A and C7D. Be-Ag-Cu alloys are formed by compacting and liquid phase sintering a powder mixture of Be, Ag and Cu with a flux selected from the group of alkali or alkaline earth metal halides. The Ag and Cu may be added as a Ag/Cu alloy containing 72-92% Ag, balance Cu, or as the elemental powders and the preferred flux is a 1:1 mixture of LiF and LiCl in an amount of 0À5- 2% of the metal content. Sintering is effected at 1000‹ -1150‹ C. in an argon atmosphere, the sintered alloy containing 50-85% Be, 49-10À8% Ag and 14-0À3% Cu. The sintered alloy may be heat treated at 770‹ C. for 1-2 hours, quenched and precipitation hardened. Many examples of different alloy compositions are given.
Patent GB-1449090-A (GB)
Title: Mould for use in continuous casting of metals
IPC: B22D11/055
Filed: 1974-06-03
Abstract: 1449090 Continuous casting USS ENGS & CONSULTANTS Inc 3 June 1974 [1 June 1973] 24491/74 Heading B3F [Also in Division F2] A vertical mould with a metal wall 10 having vertical ribs 18, 18a at its outside face, to which plates 12 are fastened (to define water-circulating passages 19) by the use of threaded studs 22 fixed to metal strips 21 inserted between ribs 18a which have opposed lips 20 and which, with the strips, form additional water-circulating passages 19a; the studs 22 extend through the plates 12 to recive nuts 23. The hydraulic diameter of the passages 19a is the same as that of the passages 19. The mould 10 may be in four pieces and the strip 21 between ribs 18a may be formed of end-abutting lengths. The studs 22 are welded to the strips or screwthreaded in holes in them. The strips are held in place by friction or knife edges 24 which bite into the lips 20.
Patent GB-1384794-A (GB)
Title: Transmission line of low characteristic impedance
IPC: H02G5/00
Filed: 1972-05-24
Abstract: 1384794 Strip transmission lines LCC-C ICE COMPAGNIE EUROPEENE DE COMPOSANTS ELECTRONIQUES 24 May 1972 [25 May 1971] 24527/72 Heading H1W A symmetrical strip transmission line 4, 5 comprises a dielectric medium having surface layers 2, 3 of high resistivity and an interior 1 of low resistivity. The medium may be formed by subjecting a thin strip, of e.g. barium titanate, to a chemical reduction process in order to reduce the resistivity of the material and produce the zone 1. Layers 2, 3 of high resistivity are thus produced by an oxidization process. These processes may comprise heating the strip first in hydrogen, then in oxygen at about 1000 C. Strip conductors 4, 5 are formed of silver by, e.g. a printing process. The resultant line has a low characteristic impedance and a high propagation velocity. A strip line may be formed by placing end-to-end a member of rectangular slabs, formed as above, and enclosing them between two elongated planar conductors to which they may be glued or soldered. These conductors may carry pairs of tags for signed distribution. The whole line may be encapsulated in a dielectric medium.
Patent GB-1143418-A (GB)
Title: Condition-responsive switch
IPC: H01H35/34
Filed: 1966-06-02
Abstract: 1,143,418. Fluid actuation of switches. MALLORY TIMERS Ltd. 2 June, 1966 [11 June, 1965], No. 24624/66. Heading H1N. In a pressure-actuated switch which is set to actuate at alternative predetermined pressures by a cam 12, Fig. 4, on a control shaft 17, the cam 12 is frictionally coupled to the shaft 17 for initial independent adjustment relative to the indexing cam 27 to compensate for manufacturing tolerances. The friction drive is provided by a spring 25 and collar 24 keyed to the shaft 17. The central arm 34, Fig. 3, of a trifurcated snap-action blade 42 is actuated against a return spring 52 by a backing member 54 engaging the pressure diaphragm 58. Straight wire springs 39, 40 in compression between the arm 34 and movable contact 46 cause snapaction of the contact 46 when the arm 34 moves over-centre. The activating pressure is set by adjustment of the fixed contact 48 by means of the cam 12 which engages a spring arm 31 carrying a pin 67 in engagement with the contact 48. The reset pressure is adjustable by a screw 65 engaging the return spring 52. The contacts 46 may be manually reset by a second cam 27 on the control shaft 17. This cam 27 has raised portions which lift a spring 28 and plastic pin 53 to raise the backing member 54 clear of the central actuation arm 34 so that the contacts are freed to be returned by the spring 52. In an alternative embodiment, the cam 12 co-operates with the return spring 52 to provide a predetermined reset pressure. The setting pressure is then adjusted by a screw engaging the backing contact 48.
Patent GB-1488838-A (GB)
Title: Therapeutic product extracted from plants
IPC: A61K/
Filed: 1974-06-04
Abstract: 1488838 Plant extracts S.E.R.T.O.G. SOC D'ETUDES DE RECHERCHES DE TRAVAUX D'ORGANISATION ET DE GESTION 2 June 1975 [4 June 1974] 24641/74 Heading A5B In a process for the preparation of a therapeutic product extracted from plants of the genus Prunus of the Rosaceae family and in particular a plant of the genus Prunus originating from Asia, notably Prunus Wallitchi (Steud.), Prunus Javanica (Teysh. and Binn), Prunus Arborea (Bl.) Kalkm, Prunus Lusitanica L., or a plant of the genus Prunus Africana, notably Prunus Africana (Hook) F. Kalkm, or Pygeum Africanum (Hook), the plant is treated with a lipid to cause extraction of a fraction of the plant, the lipidic material thus obtained being treated with an alkali which reacts with the fatty acids present in the material, the unreacted lipidic material, which contains the therapeutic product, being thereafter subjected to solvent extraction with a hydrocarbon, a chlorinated hydrocarbon, mixtures of each of these or mixtures of both whereby the therapeutic product is obtained.
Patent GB-756277-A (GB)
Title: Photographically sensitised planographic printing plates
IPC: B41N1/14
Filed: 1954-08-25
Abstract: 756,277. Diazo sensitized material for making lithographic printing plates. POLYCHROME CORPORATION. Aug. 25, 1954 [Sept. 2, 1953], No. 24770/54. Drawings to Specification. Class 98 (2). A wet strength paper base as of kraft paper, which may have wet strength imparted thereto by treatment with a melamine-formaldehyde condensation product, is provided with a waterproof coating containing a filler, and an outer hydrophilic coating having a basis of a starch derivative and which carries a surface layer of a light-sensitive diazo compound. The waterproof coating may be of aqueous urea formaldehyde resin containing walnut shell flour as filler, and containing aluminium chloride catalyst as catalyst for the resin. A second waterproof coating, also as of aqueous urea formaldehyde resin but which may contain titanium dioxide and oxalic acid may be applied, and the hydrophilic coating may be of starch carbamate and may contain titanium dioxide; all of these coatings being provided on one or both sides of the paper. The diazo sensitizing compound may comprise the formaldehyde condensation product of diazo diphonylamine sulphate. A single application of chemicals as in the known diazo development process is stated to desensitize the non-printing areas and make the image highly ink-receptive and visible. Specifications 697,521 and 732,114 are referred to.
Patent GB-803574-A (GB)
Title: Control systems for aircraft
Inventor: SEDGFIELD HUGH BROUGHAM
IPC: G05D1/00
Filed: 1954-08-25
Abstract: 803,574. Automatic steering control systems. SPERRY GYROSCOPE CO., Ltd. July 15, 1955 [Aug. 25, 1954], No. 24775/54. Drawings to Specification. Class 38 (4). [Also in Groups XXIX and XXXIII] The subject-matter of this Specification is identical with that in Specification 803,572, but the claims are directed to an aircraft control system in which a manual controller for a servooperated control surface is provided with an artificial " feel " device having two members the force between which varies with separation, one member being coupled to the manual controller, and the other member, which is normally fixed relative to the aircraft's structure, being adjustable relative to the aircraft's structure in dependence on the position of the control surface under certain conditions. Reference has been directed by the Comptroller to Specification. 746,054.
Patent GB-1509655-A (GB)
Title: Precision capacitance to digital conversion system
IPC: G01R27/26
Filed: 1976-06-15
Abstract: 1509655 Analogue-to-digital conversion BENDIX CORP 15 June 1976 [2 July 1975] 24792/76 Heading H3H In digitizing the value of a capacitor 10, a non- precision source 2 of reference A.C. E R  drives a reference capacitor 4 and a digital-to-analogue converter 8 whose output E S  is A.C. in antiphase with E R  and drive the capacitor 10, the resulting currents being summed and any difference amplified, 22, 28, digitized, 43, and integrated in computer 44, the resulting digital signal being fed via register 46 to the D-to-A converter 8. For use in aircraft navigation, the capacitor 10 varies with static atmospheric pressure P S  and a second capacitor 6 varies with dynamic pressure P T  and has its own reference capacitor 12. Multiplexing is controlled by the computer 44. The D-to-A converter 8 may be arranged to produce E S  = -XE R  where X is the normalized digital input or E S  = -E R  (1 - X) whereby X is directly related to P S  or P T  as the case may be.
Patent GB-867261-A (GB)
Title: Improvements in or relating to fast photographic objectives
IPC: G02B13/00
Filed: 1959-07-20
Abstract: 867,261. Photographic objectives. LEITZ (CANADA) Ltd., ERNST. July 20, 1959 [July 21, 1958], No. 24836/59. Class 97(1) A photographic objective having a relative aperture greater than f/3.6 comprises two outer simple positive lenses enclosing therebetween two negative components separated by a diaphragm, the negative component to the rear of the diaphragm being a cemented doublet, while the negative component in the front of the diaphragm comprises a positive lens spaced from a negative lens. In this objective all the glasses have an index greater than 1 ' 62, the ratio of the rear radius of the rear component phragm the negative component to the rear 0.85 or less, the front radius of the positive lens of the front inner component is less than the rear radius of the positive lens of the rear inner component, and the front radius of the negative lens of the front inner component is less than 1.5 times the focal length of the objective and greater than 1.5 times the rear radius of the positive lens of the front inner component. Optical data are given for three examples of such an objective, one of which is illustrated. Also, graphs are given indicating the variation of coma and spherical aberration with image angle.
Patent GB-1284603-A (GB)
Title: Control unit for hot cathode gas discharge lamps
Inventor: LARK GORDON TREMAYNE KINGSLEY
IPC: H05B41/232
Filed: 1969-05-15
Abstract: 1284603 Supply circuits for discharge lamps TRANSTAR LTD 4 May 1970 [15 May 1969] 24871/69 Heading H2H [Also in Division G3] A control unit 3, for a hot cathode discharge lamp 1 and a thyristor dimming device 4, comprises a transformer 7 having a pair of secondary windings 8 and a choke 6 having at least one secondary winding 16 connected so that the variations in the voltages across the transformer secondary windings, due to the variations in the input voltage to the control unit caused by the dimming device, are reduced. The voltage developed across the winding 16 opposes that across the transformer primary winding 15 to an extent that reduces as the input to the circuit 3 decreases. Hence the variations in the transformer primary voltage are reduced so that the variations in the voltages across the secondary windings 8, which supply filaments 9, are reduced. In a modification the winding 16 is divided into two windings, the voltages across which oppose the voltages across the transformer secondary windings to reduce the variations in the filament supply voltages.
Patent GB-404758-A (GB)
Title: Improvements relating to powder boxes
IPC: A45D33/24
Filed: 1932-09-07
Abstract: 404,758. Powder boxes. LAUGHTON, G. A., Alexandra Works, Kent Street, Birming- ham. Sept. 7, 1932, No. 24889. [Class 18.] In a powder box of the type comprising an outer case a with a lid (not shown) which may carry a mirror on its inner face and an inner powder container c provided with its own hinged lid d, a spring flap e is secured, e.g. riveted, to the inner face of the lid d at one side and, when the lid is open, the flap stands away from that portion of the lid which is opposite the hinge but, as the lid is closed, the free part of the flap presses on the powder and prevents it being blown about by the snapping of the lid. The flap e may comprise two metal, &c. plates with a projecting disc g of flexible material, e.g. chamois leather or felt, clamped between them, the plates being secured together by tongues on the one which pass through slits in the other and are then turned over. Specification 354,340 is referred to. According to the Provisional Specification, the flap e may be entirely spaced away from the lid by resilient means.
Patent GB-703456-A (GB)
Title: Improved filter for liquids
IPC: B01D29/21
Filed: 1951-10-25
Abstract: 703,456. Liquid filters. GENERAL MOTORS CORPORATION. Oct. 25, 1951 [Nov. 4, 1950], No. 24919/51. Class 46 A filter element for liquids, e.g. for filtering oil in internal combustion engines-comprises a central support 20 and a a strip 40 of filter material e.g. resin impregnated paper, in the form of a plurality of double wait pleats 42 and of intermediate connecting and spacing portions 44 which contact with the support, the pleats 42-being curved to form sludge pockets 46 of uniform width, e.g. of involute shape between adjacent pleats. The inner surfaces of each of the pleats 42 are in contact with each other, the texture of the material being sufficiently rough to form passages within each pleat for the filtrate. The support 20 is provided with apertures 22 for the filtrate to flow thereinto. The strip 40 is sealed to upper and lower plates 12, 14 by resin adhesive. An apertured cardboard or sheet metal protector strip 48 encloses the strip 40 and has its ends secured by a seam 50 and its edges secured to plates 12, 14 by adhesive 54. A pair of flanged dished annular discs 26 are secured one to each end of the support tube 20 as by an external flange and to the periphery of an aperture 18 in an end plate as by an internal flange 36.
Patent GB-421999-A (GB)
Title: Improvements in camel hair brushes for treating the throat and for other medical purposes
IPC: A61B17/24
Filed: 1933-09-09
Abstract: 421,999. Brushes. FECHER, M. J., 28, Chelmsford Road, South Woodford, London. Sept. 9, 1933, No. 24997. [Class 19] Camel hair brushes for treating the throat consist of a tuft of hair A secured in a glass tube D by a funnel shaped construction B and a rubber plug C. The lower end of the glass tube is melted and sealed up.