baber/WOPTO huggingface dataset:
Patent GB-628254-A (GB)
Title: Improvements in and relating to seals for electric discharge devices
IPC: H01J9/32
Filed: 1946-02-27
Abstract: 628,254. Quartz-metal seals. GENERAL ELECTRIC CO., Ltd., and BRANSON, W. G. S. Feb. 27, 1946, No. 6124. [Class 36] Two or more mutually-insulated conductors 12, 13, are sealed through a vitreous envelope 18 by inserting each conductor into a separate section of a divided vitreous tube 14 and then heating the tube to collapse it on to the conductors. The tube 14 has one or more sealed-in partitions 15, and may be manufactured by drawing down a suitably divided tube of large diameter. The tube, with conductors positioned therein by crimping at 16, 17 is placed in the envelope 18, after which the end 19 is sealed. The envelope 18 is then evacuated, the portion of the envelope containing the tube 14 being simultaneously heated, causing the tubes to collapse together and form a vacuum-tight seal (Fig. 2). The end 19 is then broken off to expose the ends of the conductors 12, 13.
Patent GB-691792-A (GB)
Title: Improvements in or relating to electric cable connectors
Inventor: TACKLEY ALICK LIONEL
IPC: H01R4/50
Filed: 1950-03-10
Abstract: 691,792. Binding-posts. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 9, 1951 [March 10, 1950], No. 6133/50. Class 38 (i). A cable connector comprises an annular member 5 having an internally-tapered portion, embracing the cable strands 10 and providing a constriction for preventing the cable end passing back through the member after the strand ends have been bent back upon themselves, the member being retained in a recess 3 in a terminal 2 by an annular plug 7 screwing into the recess 3. The screwing up of the plug 7 produces a wedging action against the cable end.
Patent GB-193288-A (GB)
Title: Improvements in or relating to tensioning device for working sheets or strips applied to abrading and/or polishing wheels
IPC: B24D9/04
Filed: 1922-03-02
Abstract: 193,288. Vassy, P. March 2, 1922. Wheels.-A tensioning-device for the paper, cloth, &c. c applied to an abrading or polishing wheel is inserted into a sleeve f provided in the width of the wheel, the two ends of the paper &c. being engaged in a slot e in the spindle d which is rotatable by a key inserted in holes g in a ratchet-wheel i rigidly connected to the spindle and maintained in adjusted position by a spring- pressed pawl h. Felt or padding b is interposed between the paper &c. and the wheel.
Patent GB-215886-A (GB)
Title: A device for guarding mortising, drilling, and the like machinery
IPC: B27G21/00
Filed: 1923-03-05
Abstract: 215,886. Austin, J. G. March 5, 1923. Mortising.-Guards for mortising, wood-drilling, chain-saw and like machines comprise side frames 2 supported on guide-rods 16, 18 and a detachable front frame 1, as described in Specification 14088/10. [Class 80 (iv), Mechanism &c.]. The side frames have projections 4, say two in number, engaging with bayonetjoint slots 5 in the frame 1, say five in number, so that the frame 1 can be lifted out, raised or lowered, and dropped into place at a different height. The front frame 1 has a removable middle section 3. A work holder or presser foot 7 is held down by a weight 12. The whole guard rises as the foot 7 is raised, and may be lifted independently on its guides when the machine is stopped.
Patent GB-754236-A (GB)
Title: Improvements in and relating to evaporative heat exchangers
IPC: B01D1/22
Filed: 1954-03-04
Abstract: An evaporator comprises one or more rotary, co-axial, cylindrical or conical heatexchange surfaces over which liquid to be evaporated is caused by the action of centrifugal force to flow in a thin layer, the or each heat-exchange surface being enclosed by a heating jacket through which steam or other vapour is passed. Fig. 1 shows an evaporator in which a cylindrical steam-heated, hollow rotary element 4 is carried by a shaft 5 which also carries an impeller 9 by which liquid <PICT:0754236/III/1> contained in the casing 1 is thrown against the wall of the rotary element 4 to be there retained by centrifugal force in a thin layer the thickness of which is determined by a shoulder 15. Vapour passes out through port 3 and any unevaporated liquid is either evacuated through port 17 or drops back into the casing according to whether or not the process is continuous or intermittent.  The impeller may be rotated independently of the element and in some cases the element itself is adapted to distribute the fluid over its surface, a separate impeller then being dispensed with.  A plurality of cylindrical or conical elements may be arranged one within the other and the liquid to be evaporated may either flow in series over the surface of each element in turn or may be divided into a plurality of streams in parallel, each of which flows over one element and is separately collected.  Scrapers may be provided for the heat-exchange surfaces to remove residues, crystals, &c., which may be collected in a hopper disposed under the elements (Fig. 4 not shown).  These scrapers may operate continuously or, e.g. when the apparatus is used as a crystallizer, they may be used only when required.  In Fig. 1, the amount of liquid thrown on to the heat-exchange surface may be controlled by adjustment of the liquid level in the casing using a device 10.  The evaporating surfaces of the cylinders may be provided with guide blades for the fluid flowing thereover and the apparatus may operate under pressure or vacuum.
Patent GB-834508-A (GB)
Title: Improvements relating to collapsible umbrellas
IPC: A45B19/04
Filed: 1958-02-27
Abstract: 834,508. Umbrellas. BREMSHEY, F., and EICKHORN, K. H., [trading as BREMSHEY & CO.]. Feb. 27, 1958 [April 18, 1957], No. 6407/58. Class 134 In a collapsible umbrella with telescopic stick or ribs, struts for supporting the ribs pivoted to a main slider and auxiliary struts for supporting the main struts pivoted to an auxiliary slider, located between the main slider and the umbrella crown, the material of the cover is prevented from being caught between the auxiliary slider and the crown or stick by providing stop means on the auxiliary slider and crown or sticK, which limit the upward movement of the auxiliary slider towards the crown, and which are so constructed as to make point or line contact with one another. As shown in Fig. 2, the auxiliary slider 34 is provided with two diametrically opposed projections 39, each disposed above one of the slots 42 in wnich the auxiliary struts are pivoted, and which make point-contact with the crown 24. The projections are arranged close to the surface of the stick 20 and are off-set by 90 degrees relative to stops 35 which prevent further upward movement of main slider 29 and to spring locking pawls 30. Each projection 39 may be extended downwardly over the outer surface of slider 34 and provided with a groove for the reception of the ends of the wire used for securing the auxiliary struts. The crown may be provided with a thin downwardly-projecting, tapering extension which lies closely against the stick and against which the projections 39 abut. In an alternative construction, projections 48, Fig. 7, are formed on the inner surface of slider 34 and abut against a conically widened portion 50 of the stick, making line-contact therewith. Alternatively, two projections 52, Fig. 10, may be formed on the stick 20, to prevent further upward movement of slider 34, the upper edge of the slider touching them in only two points. The slider 34 is provided with recesses 37 in the inner surface to enable it to pass over the stops 35, Fig. 2.
Patent GB-897076-A (GB)
Title: Improvements in and relating to the separation of fluids
Inventor: WOLFF HEINZ
IPC: B01D17/02
Filed: 1961-02-22
Abstract: 897,076. Gravity-separation apparatus. separating tarry condensate. SIMON-CARVES Ltd. Feb. 22, 1961, No. 6412/61. Class 46. Tarry condensate from the gas-collecting main of a coke oven battery is introduced at 13 between vessels 8 and 9. Thick tar and solids settle at 12 and are discharged, after breaking up if necessary by up-and-down or rotational movement of a clearing tool 26, by alternate opening of valves 37. Ammoniacal liquor rises between the cylindrical portions 10, 14 and passes through a strainer 34 to an outlet 33. Tar rises up a conduit 16 and through slits 20a or 20b to be discharged at 31. Remaining liquor is discharged at 32. The condensate between the vessels heats the inner one.
Patent GB-364412-A (GB)
Title: Improvements in magnetic compensators
IPC: G01C17/38
Filed: 1931-03-02
Abstract: 364,412. Magnetic compasses. PIONEER INSTRUMENT CO., Inc., 754, Lexington Avenue, Brooklyn, New York, U.S.A. March 2, 1931, No. 6424. Convention date, March 3, 1930. [Class 97 (ii).] A magnetic compensator, particularly for magnetic compasses, comprises a consequent pole magnet or its equivalent rigidly supported in a housing and provided with a sleeve of magnetic material which may be moved along the magnet by an independent operating member resiliently engaging the exterior of the sleeve. In the form shown the housing 16 adapted to be secured by screws to a hub on the underside of the compass casing supports two consequent pole magnets 27, 28 at right-angles to each other. Magnetic screens 42, 44 slide on the magnets 28, 27 and are moved respectively by worm 41 and pinion 43 which engage annular V-shaped grooves on the outer surfaces of the sleeves. The spindles 35, 36 of the worm 41 and pinion 43 are supported at one end in the wall of the housing 16 and are urged against the sleeves 42, 44 by springs 45, 46. A pivoting plate 51 is adapted to cover the heads 37, 38 of the spindles when the latter are not being adjusted. Specification 286,277, [Class 97 (ii), Surveying &c. instruments], is referred to.
Patent GB-1208815-A (GB)
Title: PRODUCTION OF alpha-OLEFIN POLYMERS
IPC: C08F4/64
Filed: 1968-02-09
Abstract: 1,208,815. Polymerizing alpha - olefins. BADISHE ANILIN- & SODA-FABRIK A.G. 9 Feb., 1968 [11 Feb., 1967], No. 6430/68. Heading C3P. Polymers of one or more alpha-olefins are made by effecting the polymerization, at a temperature of from 10‹ to 150‹ C. and a pressure of from 0À5 to 100 atmospheres in thepresence of a catalyst system comprising (a) a complex compound of a Ti(halide) 3  and an aluminium halide modified with two different compounds selected from (i) a heterocyclic N-compound, a secondary amine, or a teritary amine, and (ii) a phosphorus compound of the formula where R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> denote H, alkyl, aralkyl, aryl, alkylamino, aralkylamino or arylamino groups and in which in the case of the last three groups the nitrogen atom is directly attached to phosphorus, (b) an organoaluminium compound, and optionally (c) an organozinc compound. The modification of (a) by the two compounds includes the step of grinding (i) or (ii), or (i) and (ii) with (a). The grinding may be carried out in the presence of (b) and/or (c). The Specification contains lists of suitable reactants and catalyst components. The monomers homo- and copolymerized are one or more alpha-olefins with or without one or more other monoethylenically unsaturated hydrocarbons or acetylenes. Specified alphaolefins, of which propylene is exemplified, are ethylene, propylene, butene-1, 3-methylbutene, 4-methylpentene, and n-hexene. Specified mixtures are of ethylene and propylene. Exemplified catalyst components are 3.TiCl 3 . AlCl 3 , hexamethylphosphoric acid triamide, triphenyl phosphine oxide, gamma picoline, diethyl zinc, triethylaluminium, and diethyl aluminium chloride. The polypropylene may be fractionated by solvent extraction.
Patent GB-1533013-A (GB)
Title: Suction cup for checking gas-tightness and a method and apparatus employing said suction cup
IPC: G01M3/20
Filed: 1976-02-18
Abstract: 1533013 Leak testing SOC GENERALE D'ETUDES MECANIQUES ET ELECTRIQUES 18 Feb 1976 [21 Feb 1975] 06454/76 Heading G1S A sniffer device for use in leak testing in conjunction with a tracer gas such as freon or helium and a detector therefore comprises a body 1 having an open chamber 2 for connection to pumping means to lower the pressure in the chamber and to the detector, and gas operated lifting means 9, 10 for producing a lifting force on the body 1 to counteract the suction force produced by the reduced pressure in chamber 2. The means 9, 10 includes a conduit 9 connected to an annular orifice 10, gas flowing through the conduit and orifice to produce sufficient lifting force to maintain the device slightly spaced from a surface being tested. The gas from orifice 10 also acts as a barrier to prevent air from entering chamber 2. The body 1 carries a layer of resilient material 5. In Fig. 4, a tank 111 to be tested is connected to a pumping system including an ejector 300 and a pump 400 via line 200. Gases to produce a tracer gas mixture are introduced at 125, 126, mixed at 124, expanded at 134 and injected at 114 and/or 200. The sniffer device is connected to a detector 152 and a pump 149. To check a wall not forming part of a closed vessel, a chamber is formed on one side of the wall by plastics material to provide a chamber for injection of the tracer gas.
Patent GB-1254072-A (GB)
Title: Improvements in or relating to voltage regulator and brush-holder for alternators
IPC: H02J7/24
Filed: 1969-02-06
Abstract: 1,254,072. Brush-holders and regulators for alternators. ROBERT BOSCH G.m.b.H. 6 Feb., 1969 [10 Feb., 1968], No. 6489/69. Heading H2A. In a combined voltage regulator and brushholder assembly for an alternator having an exciter winding supplied with current through brushes in the brush-holder 11, the regulator employs semi-conductor elements and is embedded and encapsulated in plastics material which, with the brush-holder, forms a single structural unit 10. The semi-conductor elements are in a housing 18 fitted on a U-shaped cooling member 24, and connected to a printed-circuit on a regulator base-plate 15 carrying a resistor plate 16 and a capacitor 17 are connecting lugs 19 . . . 21 and a socket 22. Specification 1,252,026 is referred to.
Patent GB-553462-A (GB)
Title: Improvements in the manufacture of wheels
IPC: B60B19/00
Filed: 1942-05-14
Abstract: 553,462. Wheels. LUTZ, E. C. May 14,1942, No. 6533. [Class 144 (i)] [Also in Group XXII] A wheel for perambulators, toys, wheelbarrows etc. comprises a hub tube 10 upon which are mounted two assemblies each consisting of a hub flange 12 with spokes 17 secured thereto, the ends 20 of the spokes being bent to lie substantially parallel to the axis of the hub tube, and a rim 21 secured to the bent ends of the spokes. The hub tube may be made from a blank of sheet metal bent to cylindrical form and provided with an oil hole 11. The ends of the spokes may be secured by spot welding. After securing the spokes to the hub flanges 12 and before assembling them on the hub tube 10 and attaching the rim, each hub flange with its attached spokes is placed in a jig and the outer ends of the spokes are then bent as shown in readiness for their further assembly.
Patent GB-231461-A (GB)
Title: Improvements in installations for the treatment of heavy hydrocarbons, to obtain combustible gas, light hydrocarbons, lamp black and other products
Filed: 1925-03-10
Abstract: 231,461. BenzonaftÞne. March 28, 1924, [Convention date]. Drawings to Specification. Ink.-Liquid hydrocarbons prepared as described in Specifications 231,157 and 231,459. [both in Class 32, Distilling &c.], are distilled to form fractions which are separately purified and again distilled. The residue from the distillation of the heavier fractions and heavy oil. obtained as distillate from the fractions are mixed with manganese dioxide and colophony to yield a siccative oil similar to boiled linseed oil. This siccative may be mixed with lampblack to form printers' ink.
Patent GB-437629-A (GB)
Title: Improvements in or relating to transmitters for electric remote indicating systems
IPC: G08C19/06
Filed: 1935-03-01
Abstract: 437,629. Electric signalling systems. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. March 1, 1935, No. 6553. Convention date, March 1, 1934. [Class 40 (i)] In order that the transmitter of a signalling system for repeating the indications of a primary instrument shall exert no disturbing reaction of the primary instrument, the primary instrument controls a pair of variable inductances M<1>, M2 which are connected respectively in circuit with receiver windings 4, 5, the arrangement being such that equal opposed torques are exerted on the instrument shaft for all positions of the shaft. The cores of the inductances may be shaped so that the inductances are varied reciprocally upon movement of the instrument shaft. In a modification, a single core of constant cross-section co-operates with the coils. The cores may be of magnetic alloy and may be provided with air gaps. The magnetic saturation of the cores is made sufficiently low to render the inductance independent of voltage variations.
Patent GB-781897-A (GB)
Title: Improvements in or relating to a cutting machine for hard or hardened metals
IPC: B27D1/04
Filed: 1956-03-02
Abstract: 781,897. Shearing; breaking. LARDENOIS, F. March 2, 1956 [March 8, 1955], No. 6572/56. Class 83 (4). In a machine for cutting hard metal bars, cutting is effected by two pairs of members which grip the bar on each side of the cutting plane and exert a combined shearing and torsional force to cut the bar. The cutting mechanism is housed in recesses in front and rear blocks 1 and 2, respectively which are secured together. The front pair of cutting members 4a, 4b are located in a recess 5 in a disc 3 rotatable in the front block 1 and are held in place by a pawl 9 pivotally mounted in the front block. The rear pair of cutting members 17a, 17b are located in a recess 16 in a disc 15 rotatably carried in an aperture in a lever 12 mounted in the rear block 2 and are held by a pawl 18 pivotally held in the lever 12. A bar may be passed through slots in the blocks 1 and 2 and apertures formed by the pairs of cutting members, these apertures being of the same shape as the cross-section of the bar. The discs 3, 15 are journalled on a common axis. When the lever 12 is lowered the pawl 18 causes the cutter members 17a, 17b to grip the bar which is carried downwards, rotating the disc 3 until the pawl 9 urges the cutting members 4a, 4b to grip the bar and prevents their further movement. Completion of the actuation of the lever 12 cuts the bar by a combined shearing and twisting action.
Patent GB-267526-A (GB)
Title: Improvements relating to opening means for boxes
IPC: B65D43/26
Filed: 1927-03-09
Abstract: 267,526. Kurpiel, L. March 10, 1926, [Convention date]. Lids.-A device for opening a tin comprises a plate, 4 pivoted to the body part at 3 and formed with curved ribs 8 adapted, when the plate is turned, to engage and raise the lower edge of the lid 2. The upper part of the plate lies between the tin body part and the flange of the lid and has spikes or teeth 5 projecting rearwardly into recesses 7 formed in the body.
Patent GB-471538-A (GB)
Title: Improvements in or relating to contact tips for electric switches
IPC: H01H1/021
Filed: 1936-03-05
Abstract: 471,538. Switch contacts. WEST & CO., Ltd., A., and BABLER, E. March 5, 1936, No. 6681. [Class 38 (v)] [Also in Group XXII] A switch contact comprises a body of a good conducting material such as silver or copper which is reinforced by thin laminations of a metal of higher melting point such as tungsten and similar metals, or nickel, iron or their alloys or of graphite silicon refractory materials. The laminations are placed parallel to the direction of the current and so do not greatly increase the contact resistance. The laminations may be preformed into a grid and immersed in the molten conductor metal, or sintered with the powdered conductor metal. Alternatively slots may be cut in the conductor metal and the laminations inserted and soldered in position. Or the contact may be made by winding a double spiral of ribbons of the two metals which are then compressed.
Patent GB-1094931-A (GB)
Title: A hydrothermal process for growing crystals having the structure of beryl
IPC: C22C1/10
Filed: 1965-02-17
Abstract: A single crystal of beryl is grown by subjecting an aqueous mixture containing Be, Al, and Si oxides, an alkali metal or ammonum halide and a seed crystal, to a temperature of at least 425 DEG  C. and a pressure of at least 6000 lb./in.2 (422 kg./cm.2).  The oxide sources may be: crystalline or fused quartz or porous SiO2 glass; sapphire, gibbsite, or Al(OH)3 p.p.t.d. from Al(NO3)3; and Be(OH)2 or BeO; preferably in the proportions 3BeO.Al2O3.6SiO2. The halide media may be acidic (pH from 0.2 to below 7), e.g. NaCl, NH4F or, preferably 0.1N-11NNH4Cl, adding HCl if necessary; or alkaline (pH from above 7 to 12.5), e.g. 0.01N-0.02NKF or 0.01N-0.3N(NH4F + NH4OH).  The seed crystal may be natural or synthetic, e.g. cut from a previous growth, and various axial orientations are exemplified.  The reaction vessel may be Ni-steel alloy and may be lined with Ag, Pt or Au.  Transition metal or rare earth metal ions, e.g. Cr, Fe, Ni, Nd, may be incorporated into the crystal by adding the appropriate oxide, hydroxide, nitrate, chloride, or sulphate to the reaction mixture, in amounts of 0.01-11 weight per cent based on the theoretical weight of beryl, to give a final content of 0.005-8 per cent by weight of the crystal.  The material of an unlined vessel may also supply ions (e.g. Fe + Ni).  The lower part of the reaction vessel, containing Be and Al oxides, may be maintained 10-100 DEG  C. higher than the upper part, in which the SiO2 is suspended (e.g. by wire or baskets), with the seed suspended in the middle. Alternate layers of oxide mixture and seed crystal may be arranged.  Temperatures up to 800 DEG  C. and pressures up to 30,000 lb./in.2 are referred to.
Patent GB-795309-A (GB)
Title: Improvements in or relating to windscreen wipers
Inventor: MIDGLEY ALBERT MORRELL
IPC: B60S1/40
Filed: 1955-03-08
Abstract: Relates to a radioactive isotope incorporated in a foil associated with a windscreen cleaner blade or holder (see Group XXIII).  The foil is made from gold or silver powder in which a radioactive polonium isotope is precipitated as an insoluble salt, the powder being compressed into a solid block and rolled to size. This active element is then sealed between a relatively heavy base-plate of silver and thinner layers of inactive gold to form a sandwich which is then rolled to produce the foil.  In a modification, the foil may be formed from a thin sheet of copper incorporating the isotope polonium 210 or the isotope thallium 204.
Patent GB-931745-A (GB)
Title: Improvements in or relating to transistor relay circuits
Inventor: DUNN WILLIAM CHARLES
IPC: H03K5/24
Filed: 1960-02-26
Abstract: 931,745. Transistor comparator circuits. GENERAL ELECTRIC CO. Ltd. Feb. 23, 1961 [Feb. 26, 1960; July 26, 1960], Nos. 6829/60 and 25962/60. Class 40 (6). A transistor comparator circuit comprises two transistors having their base and emitter electrodes directly cross-connected and having a pair of relatively variable unidirectional signals of the same polarity connected respectively between the emitters and a common point, the circuit being such that when the signals are equal neither transistor conducts but when one is larger than the other a corresponding one conducts, means being provided which is responsive to a predetermined conduction of each transistor. In the Figure, the base and emitter electrodes of transistors 1 and 2 are directly non-connected so that when the unidirectional input signals applied to transistors 12 and 13 are equal the bases and emitters are all at the same potential and neither of transistors 1 and 2 conduct. If the signals are unequal, one transistor will conduct and when the conduction exceeds a certain value the corresponding circuit 8 or 9 will operate a relay 10 or 11. In an alternative circuit (Fig. 1, not shown), transistors 12 and 13 are replaced by triode valves.