baber/WOPTO huggingface dataset:
Patent GB-742076-A (GB)
Title: Electric discharge tube and circuit arrangement for measuring gas pressure
IPC: H01J41/06
Filed: 1953-05-01
Abstract: 742,076. Electric tests and measurements. EASTMAN KODAK CO. May 1, 1953 [May 3, 1952], No. 12185/53. Class 37. [Also in Group XL (a)] In an arrangement for measuring gaspressure, comprising a cold-cathode discharge tube of the type described in Specification 474,845, the measuring range is increased and the tube made self-cleaning during operation by provision of a switch whereby the polarity of the discharge tube electrodes can be reversed. The discharge tube 10 (see Group XL (a)) comprises a plate electrode 17 having two members 24 facing each other across the discharge space, a magnet 25 positioned so as to establish a beam of magnetic lines of force between the members 24, and a loop electrode 16 encircling the lines of force. The tube 10 and a microammeter 11 are connected in parallel in a conventional circuit having leads 12, 12 which are connected to a power circuit through a switch 13. The usual transformers 18 and rectifiers 19 establish the correct operating voltages for the discharge tube. A series of resistances 20 permit operation of the meter 11 over a wide current range with good sensitivity. A switch 14 provides means for reversing the polarity of the electrodes 16 and 17 of the tube 10. For pressures below 10 microns Hg. the switch 14 is adjusted so that the loop electrode 16 is positive and the plate electrode 17 is negative. The discharge current is measured on the meter 11 which is preferably calibrated directly in terms of pressure. To measure pressures higher than about 10 microns, the switch 14 is reversed to make the loop electrode 16 negative and the plate electrode 17 positive. Under these conditions the gauge has good sensitivity over a range of about 10-400 microns Hg.
Patent GB-674892-A (GB)
Title: Improvements in piston pumps
IPC: F04B1/14
Filed: 1949-05-06
Abstract: 674,892. Swash plates. BEACHAM HYDRAULIC CO., Ltd., and BEACHAM, T. E. April 19, 1950 [May 6, 1949], No. 12204/49. Class 80 (iii). [Also in Group XXVIII] A swash plate pump comprises a conic crank having coaxial first and second parts 1, 49 respectively a third part 3 attached at one end to the first part with its axis inclined to the axis of the first part, a swash plate 2 having bearing surfaces adapted to co-operate with two sets of bearings 51, 52 respectively spaced apart on the third part, the bearing surface 52 further from the first part having substantial axial length precluding tilting of the swash plate on the third part, and a joining part connecting the other end of the third part and the second part, which joining part at the inside of the angle between the second and the third parts is first a continuation 72 of the surface of the third part and then is turned outwardly to join on to the second part and at the outside 71 of that angle at the join with the second part is turned inwardly so that the swash plate can be moved axially of the third part towards the second part until the said bearing of substantial axial length is brought to a position enabling it to negotiate the said angle. The driving shaft 1 may be balanced in the manner described in Specification 646,371, [Group XXVIII].
Patent GB-819331-A (GB)
Title: Ether purification
Inventor: DELAUNE ELAINE THEODORA
IPC: C07C41/44
Filed: 1957-04-15
Abstract: A crude dialkyl ether containing foreign odour-imparting contaminants is purified by contacting the crude ether, in the presence of a minor proportion by volume of a liquid primary alcohol, with an aqueous solution of an alkali plumbite and thereafter fractionally distilling the treated ether after separation from the aqueous plumbite solution.  Preferably an aqueous solution containing 0.5-10 weight per cent of sodium plumbite is contacted with a mixture of the ether and alcohol containing 0.5 to 10 volume per cent of the alcohol.  The crude ethers may be simple or mixed dialkyl ethers, preferably containing 4-6 carbon atoms and may be those obtained from olefines by reaction with sulphuric acid or by direct hydration. Examples describe the purification of diethyl ether as above using methanol or ethanol and also comparative purifications using aqueous sodium plumbite alone or with isopropanol or a wetting agent or using water, aqueous alcohol, aqueous or aqueous alcoholic KOH, aqueous solutions of NaOH, NaHSO3 or KMnO4, 65 per cent sulphuric acid or aqueous alkaline sodium hypochlorite with or without added ethanol.  A process is described with reference to apparatus drawings wherein a crude ethanol obtained by reacting ethylene with sulphuric acid and hydrolysing the product, is fed to a distillation column from which are withdrawn an ether fraction as overheads and an ether-free alcohol as bottoms.  The ether fraction is then fed to a purification unit, if necessary after being washed countercurrent-wise under pressure with water to reduce the ethanol content or alternatively having a little ethanol added thereto, and is contacted with aqueous sodium plumbite; the treated ether is removed, dehydrated by distillation and fractional condensation and finally fractionally distilled.  The abovementioned alcohol bottoms is fed to a rectification column from which a side-stream is withdrawn and fed to the ether washer whereby high-boiling material in the alcohol is etherically extracted, the water-alcohol phase from the mixer being passed to the first-mentioned column.
Patent GB-1479262-A (GB)
Title: Electrical terminal
IPC: H01R4/40
Filed: 1976-03-26
Abstract: 1479262 Terminals HEGO ELECTRIC GmbH 26 March 1976 12255/76 Addition to 1382750 Heading H2E An electrical terminal comprising a U-shaped body 1, and a pivoted clamping member 2 has a screw 7 threaded in a transverse member 8 or 13, 14 to bear against a (second) arm 19 of the clamping member and cause the first arm 18 to grip a conductor 6 inserted, parallel to the screw 7, into an aperture 17 between the first arm and a clamping surface 4 of the terminal. The clamping member may pivot about a projection or projections (5) on the end of the first arm, about a hook 20, or about its elbow 27 bearing against a further transverse member 26. The first arm 18 of the clamping member may be roughened by milling or by ribs and grooves to grip the conductor, or may have a sharp point or edge to penetrate the insulation of an insulated conductor. The clamping surface 4 may be a conductive strip, as in Fig. 2, inserted in the aperture 17 to connect to a further terminal or a solder tag &c. In this case the rest of the terminal need not be of high conductivity metal and can be of, e.g. sheet or strip steel. In use the terminal is disposed in an insulating housing, for instance, of the type which clips on to conducting rails, and such a housing may contain a pair of terminals.
Patent GB-812816-A (GB)
Title: Luminescent indicating device
IPC: H01J31/14
Filed: 1955-04-28
Abstract: 812,816. Indicating-apparatus. UMEDA, S. April 28, 1955, No. 12282/55. Class 106 (4). [Also in Group XL (a)] A pointer for indicating the state of tuning of a resonant circuit comprises an evacuated glass discharge envelope 7 rotatable or slidable along a scale 13 and mechanically connected with the tuning element of the circuit, e.g. a variable condenser. The envelope contains an anode 1 in the form of an arrow-head of substantially U-shape cross-section having at least part of its surface coated with a fluorescent material, the extent of fluorescence of which gives an indication of the state of tuning of the circuit.
Patent GB-617155-A (GB)
Title: Improvements in methods and apparatus for making aerosols
IPC: B05B7/04
Filed: 1945-05-16
Abstract: 617,155. Spray-producers. HOCHBERG, S. May 16, 1945, No. 12310. Convention date, May 9, 1944. [Class 69 (iii)] [Also in Group VI] Insecticidal aerosols are produced by forcing through a tube a suspension in a gas of droplets of oil containing dissolved insecticides, the tube having a bore diameter of less than 0.2 inches and a length at least five times its diameter, the pressure difference between the two ends of the tube, its length and diameter being so proportioned to produce droplets substantially of a radius between 0.3 to 10 microns. A pressure drop of 50 to 120 lbs. gauge is specified. A suitable apparatus comprises pumps 5, 6 for air and the oil solution respectively, an atomizer 8 with pressure gauge 9, and the tube 10. In another form, a 50 per cent oil-50 per cent water emulsion containing the toxic substance is vaporized and heated to 210‹ C. by passage through a heated coil, and thereupon passed through the tube.
Patent GB-330071-A (GB)
Title: Improvements in centrifugal pumps, blowers, exhausters or the like apparatus
IPC: F04D29/22
Filed: 1929-04-20
Abstract: 330,071. Cherry, T. B. April 20, 1929. Disc-supported-blade fans and pumps; impeller blades.-A centrifugal pump, blower or exhauster has one or more impeller vanes 6 supported at either or both ends by a shroud 7. The vanes 6 present similar surfaces to the material to be pumped irrespective of the direction of rotation; they are preferably heart-shaped as shown in Fig. 3. Vanes 13 are secured to the outside of the shrouds 7 to prevent material from accumulating between the shrouds and the casing 8. The number of vanes 13 exceeds that of the vanes 6 by one. In a modification the impeller vanes extend through the shroud to form the auxiliary vanes. In another modification one hollow impeller vane of heart-shaped section is provided and the balance of the impeller is maintained by a crescent-shaped .guide vane.
Patent GB-607689-A (GB)
Title: Crystalline alumina and method and apparatus for making the same
IPC: C01F7/02
Filed: 1945-05-16
Abstract: <PICT:0607689/III/1> Crystalline alumina suitable for use as an abrasive, is prepared by subjecting a mixture of relatively pure alumina with .2-1 per cent sodium or potassium compounds calculated as oxide in powder form to fusion and maintaining the alkali compound substantially uniformly distributed throughout the melt, pouring the fused material into a mould and cooling the mould and its contents. The starting material may suitably be alumina from the "Bayer" process, but sodium or potassium hydroxide, or sodium carbonate may be mixed with substantially pure alumina.  In Fig. 2, powdered alumina is charged preferably continuously through pipe or pipes 16 into a frusto-conical electric furnace 10, fused to a temperature of 50 DEG  to 100 DEG  C. above its melting point, i.e. about 2050 DEG C., and poured preferably intermittently into mould 31.  The furnace 10 has a circular cross-section, except that the part containing graphite outlet 17 is flattened, and may be adapted to be rocked to a position 10 degrees from the vertical on guide rails 26 with which it meshes by teeth 28 engaging recesses in the guide rails.  Electrodes 13, 14, 15 are independently mounted and project into the furnace through slots in the cover 12, and may be vertically adjusted.  The base of the furnace may contain solidified fused alumina 20, and a layer of powdered unfused material is allowed to float on the surface of the fused material surrounding the electrodes, the thickness of this layer being adjusted by alteration of the feed rate to control the amount of alkali compound in the product.  Water is run over the surface of the furnace, except that a shield 17b is placed over outlet 17.  A plug 21, which is of a size to fill pipe 17 completely, is provided.  Cast iron mould 31 has a capacity of about 350 pounds alumina and is mounted on car 32 for movement along rails 33.  The cross-section of the mould is preferably square with rounded corners, the sides taper slightly downwards, and the bottom is concave upwardly; the upper parts of the walls flare outwardly to a lip.  The inside of mould 31 is preferably coated with an aluminium paint or with fused alumina, such as the product of the invention with a binder such as sodium silicate.  After filling, mould 31 is allowed to cool in the atmosphere and may take a circuitous path on rails 33, before being emptied and returned for filling.  Each car 32 preferably takes three moulds.  The solid ingot of alumina is broken up in a crusher.  Specification 608,950, [Group XII], is referred to.ALSO:Molten alumina is poured directly from a furnace into a cast iron mould, the inside of which is preferably coated protectively with aluminium paint or with fused alumina with a binder such as sodium silicate.
Patent GB-678762-A (GB)
Title: Improvements relating to flow indicators
Inventor: NEWITT FRED
IPC: G01P13/00
Filed: 1950-05-18
Abstract: 678,762. Indicating fluid flow. MEASUREMENT, Ltd. April 2, 1951 [May 18, 1950], No. 12435/50. Class 97 (ii). An indicator for indicating the flow of fluid in a pipe-line comprises a vertical tube 4 in communication with an inlet 2 and opening under a transparent cover 9, the bore of the tube being enlarged at its upper end to receive a ball 5 of e.g. rubber, plastic or metal, the diameter of which and preferably the radius of which is greater than the distance between the tube 4 and the cover 9, the space around the tube 4 being in communication with an outlet 3. The tube 4 is preferably disposed centrally in the casing closed by the cover 9 which is clamped on to a seating 6 by a screwed or flanged ring 12 with suitable gaskets 6, 10 interposed. Holes 13 are provided in the ring 12 to take a key for screwing the rings-off and on the casing.
Patent GB-295345-A (GB)
Title: Photographs for passports and similar purposes
IPC: G03C11/12
Filed: 1927-05-09
Abstract: 295,345. Lagendyk, J. May 9, 1927. Papers, stripping. -A photograph printed on an emulsion layer coated directly on a! paper support is transferred to a deed, passport, or other document so that it becomes undetachably connected thereto, and is sufficiently transparent to permit reading-matter on the deed &c. to show through clearly when the temporary paper support is stripped off. The transfer is effected by placing the wet photograph face downwards on the document, pressing it to remove air bubbles, then applying heavy mechanical pressure, and finally applying moist heat in the form of steam, which loosens the paper support so that it may be stripped off, and causes the picture layer to flow into the surface of the document. To permit rapid drying the document is treated in a hardening bath and any known water displacement means.
Patent GB-1247439-A (GB)
Title: Control device for automatic washing machines
IPC: D06F39/00
Filed: 1969-03-10
Abstract: 1,247,439. Time switches. HOLZERPATENT A.G. 10 March, 1969 [9 March, 1968 (2)], No. 12493/69. Heading H1N. A programme control device for automatic washing-machines has at least two cam wheels driven independently of one another by a single common motor via an eccentric drive including mutually phase-displaced driving pawls associated respectively with said wheels. Three cam wheels 2, 3, 4, respectively controlling reversal of the wash drum, programme switching, and time duration of operations, are loosely mounted on a shaft 1 and stepped by respective pawls 16, 15 and 14 oscillated by eccentrics 13, 12 and 11 on a common shaft 10 driven by a motor 7. Pawls 16 and 15 are controlled by the armatures of electromagnets 22 and 21. The three pawls operate out of phase, such that the motor 7 never has to stop more than one cam wheel at a time, and may be thrust-pawls (as shown) or traction pawls (Fig. 9, not shown) or a combination (Fig. 7, not shown). The pawls may be operated by a common eccentric, in which case they lie at different angles, or the pawls may be aligned and operated by differently phased eccentrics (Figs. 8 and 9, not shown). In the modifications of Figs. 10 and 11 (not shown), the cam wheels are not coaxial and the pawls are arranged accordingly. As shown, face cams on wheels 2, 3 and 4 control contact sets 25, 28 and 29 respectively while the periphery of a programme selector wheel 6, connected to the wheel 2, operates a contact set 36.
Patent GB-1502163-A (GB)
Title: Method of treating semipermeable membranes
IPC: B01D61/10
Filed: 1975-03-26
Abstract: 1502163 Reactivating semipermeable membranes UOP INC 26 March 1975 [27 March 1974] 12603/75 Heading B1X [Also in Division B5] A semi permeable membrane is reactivated by treating the membrane so as to incorporate in it an effective amount of a supplemental polymer containing an average of at least one acetyl group per each four carbon atoms in the polymer chain. Preferred co-polymers are those formed by copolymerisation of a mixture of at least 50 mole % vinyl acetate and an Optionally esterified carboxylic acid (or an anhydride thereof) of the formula: (wherein X is H, 1-3C alkyl or carboxyl; Y is H 1-3C alkyl or -CH 2 COOH and Z, is H or 1-3C alkyl). The supplemental copolymer having the general formula:  (where one of A and B is -COOH or COOR and the other is H, COOH 1-3C alkyl or COOR, R being 1-3C alkyl). The polymer membrane is preferably a cellulose derivative or a polyamide and is treated with a slightly alkaline aqueous solution of the supplemental polymer followed by insolubilization of the polymer by lowering the pH to below 7, optionally in the presence of a multivalent cation e.g. Zn. Treatment of the membrane may be effected by adding the supplemental polymer to the liquid e.g. brackish water, being treated.
Patent GB-474680-A (GB)
Title: Process for the regenerating of amalgamated printing blocks
IPC: B41C1/16
Filed: 1936-05-04
Abstract: 474,680. Ink. RENCK, H. May 4, 1936, No. 12606. [Class 146 (iii)] [Also in Group XVI] Printing-ink for use with printing-surfaces having ink-repellent parts formed of a hard amalgam contains an amalgam in a finelydivided state. The amalgam is preferably one which is capable of hardening in the air, e.g. silver, tin, or cadmium.
Patent GB-904739-A (GB)
Title: Method and apparatus for preparing yarn packages
IPC: D01H9/14
Filed: 1959-04-14
Abstract: 904,739. Spinning yarns; doffing. DEERING MILLIKEN RESEARCH CORPORATION. April 14, 1959 [April 14, 1958], No. 12669/59. Class 120 (2). Yarn packages are prepared by winding yarn on bobbins in a ring-frame, grasping the bobbins by vertically-movable graspers mounted on a common support, loosening the bobbins from the spindles and removing the bobbins from the spindles by raising the graspers, and then releasing the bobbins from the graspers, the bobbins being loosened by exerting an upward force on the bobbins through an upward force applied to the support by the ring-rail, there being a mechanical connection between the rail and the support while the bobbins are being loosened. This connection is preferably formed by empty bobbins extending between the rail and the support, one being disposed between each adjacent pair of filled bobbins. In Fig. 1, a ring-rail 24 is traversed by pokers 25 raised and lowered by arms 27 secured to shafts 33 which are rocked to lower the arms by a builderchain 35 acting through rods 37, 39, counterweights W providing the force to raise the rods. An additional lifting force is applied to the rail through one or more levers 41 by piston(s) 45 to which pressure is supplied by an air-line 49. The action of each piston is limited by a second piston in a cylinder 63 in parallel with the first which bears on a pivoted rod 53 against the action of a spring to position a stop 55 in the path of upward movement of the arm 27. The piston may act directly on the rod 39. Holders 71, 73 for empty and filled bobbins are arranged alternately on a beam 67 movable by cables 69. The holders 73 may have pneumatic graspers of the form described in Specification 902,972 or comprising members 87, Fig. 6, pivoted to beam 67 and operated to grasp and release the package by an elastic connecting-member 90 and levers 93, 95, respectively. The graspers for the empty bobbins may comprise elastic cups or magnetic means. When a wind is completed, the ring-rail is lowered and latched in its lowest position. The thread-boards and separators, not shown, are removed and the beam 67 is lowered by the cables 69 so that the empty bobbins 13 take up positions between the filled bobbins in contact with or adjacent to the ring rail. The rail 24 is unlatched and a valve in air-line 49 opened so that the weights W and piston(s) 45 act to raise the rail, and through the pressure exerted on the bobbins 13, the support 67 to a position defined by the stop 55, whereby the filled bobbins are released from their graspers. The rail is then lowered and relatched and the support arm raised by cables 69 and the filled bobbins doffed and replaced as in Specification 902,972.
Patent GB-1343958-A (GB)
Title: Braking systems
IPC: B60T8/50
Filed: 1971-05-03
Abstract: 1343958 Antiskid braking systems ROBERT BOSCH GmbH 3 May 1971 [6 May 1970] 12721/71 Heading F2F In an antilock compressed air braking system a valve assembly 1 is provided between a drivers valve 5 and a brake cylinder 27 comprising a solenoid valve 4 responsive to an antilock signal derived from a sensor and acting as a pilot valve for two double seat valves 2, 3 each of which respectively controls the supply of air to and from one of chambers 26, 29 of the brake cylinder. During normal braking conditions air passes from a reservoir 6 to chamber 26 by way of drivers valve 5, line 24 and ports 23, 25 of valve assembly 1 to move a diaphragm 28 thereby actuating the brake. On reception of a skid an electrical signal passed to solenoid valve 4 causes a closure member 9 to seat at 10 allowing air to pass from reservoir 6 to act on two pistons 13, 18 of valves 23. Return spring 18<SP>1</SP> acting on piston 18 is weaker than the spring 13<SP>1</SP> acting on piston 13, and piston 18 is depressed first to cause a closure member 19 to seat at 20 and allow air in chamber 26 to be vented through connection 22. Piston 13 is then depressed and air passes via a port 8 and line 30 to the chamber 29 to move diaphragm 28 upwardly and release the brake. On receleration of the wheel solenoid valve 4 is deactivated and air acting on pistons 13, 18 is vented through connection 12. Air in chamber 29 is vented through line 30 and the hollow stem 14 of valve 2. In a further embodiment the second valve 3 is replaced by a double non-return valve. Alternatively a single hollow stem 36, Fig. 3 (not shown), may be used for the double seat valves situated at either end of the stem.
Patent GB-273446-A (GB)
Title: Attachment of leg guards to cycles
IPC: B62J17/06
Filed: 1926-05-18
Abstract: 273,446. Wasdell, E. C. May 18, 1926. Leg-shields.-A device for attaching leg-guards to cycles comprises a rigid rod a with a central cranked part a<2> and outer guard-attachment parts a<3>, the rod being adjustably secured to a frame tube e, such as the head or the front down tube, by a clip c<3>, c<4> on the cranked part a<2>, co-operating with a clip d encircling the frame tube e, the clips being clamped simultaneously by bolts f<2>, passing through the flange parts c<4>, d<2> of the clips. By partly slackening the nuts f on the bolts f<2> the cranked part a<2> of the rod a may be rotated for angular adjustment.