baber/WOPTO huggingface dataset:
Patent GB-682586-A (GB)
Title: Electro-mechanical transducer
IPC: H04R17/00
Filed: 1949-03-01
Abstract: 682,586. Sound reproducing devices. RADIO CORPORATION OF AMERICA. March 1, 1949 [March 31, 1948], No. 5610/49. Class 40 (iv). [Also in Group XL (b)] In a transducer comprising a polycrystalline ceramic material positioned between electrodes, variations in torsional stress applied to the material cause changes in the dielectric constant which may be enhanced by a piezo-electric effect produced by a D.C. polarizing voltage. An initial biasing stress may be applied so that linear variations in the dielectric constant is obtained between certain stress limits. The ceramic material consists of barium titanate or of a composition of barium and strontium titanates in preferred proportions of 71 per cent and 29 per cent respectively, while the electrodes may be formed from silver paste fired on the material. The dielectric may take the form of a thin disc or a plate or tube. A suitable detecting and amplifying circuit is shown in Fig. 1 in which a stress sensitive ceramic disc 13 has its electrodes 18, 19 coupled by a condenser 24 to the input circuit of a thermionic amplifier. A polarizing voltage is provided by a battery 28 connected across the electrode through a decoupling resistance or impedance 29. In an embodiment applied to gramophone pick-ups, Fig. 2, a plate of ceramic material 35 secured at one end to a support 36 is torsionally stressed by a stylus holder 31 which is journalled in a rubber bush 33 and has a slotted portion 32 engaging the plate. In a modification, Fig. 4 (not shown), the plate is replaced by a ceramic tube which is provided with concentric inner and outer tubular elec-. trodes and engages a socket connection in the stylus holder. The Specification as open to inspection under Sect. 91 comprises also arrangements in which the ceramic is subjected to bending. As shown in Figs. 5 and 6 (Cancelled), a gramophone pick-up comprises a rectangular bar 47 of ceramic material which is secured at one end to a socket 51 formed in a metallic block 52 and carries a metal stylus holder 46 fitted with a sapphire stylus 45. The bar has a thin intermediate web portion 48 at which the variations in stress due to lateral stylus movements are concentrated, electrodes 49 and 50 being positioned on opposite sides of the web. A rubber inset 54 at the free end of the bar engages a pivot stud 53 attached to the metallic block. In a further embodiment, Fig. 1 (Cancelled), a microphone has its diaphragm formed by a disc of ceramic material 13 which is clamped between threaded casing components 10, 11 after an initial mechanical bias has been applied. This subject-matter does not appear in the Specification as accepted.
Patent GB-971679-A (GB)
Title: Process for the production of metal castings and apparatus therefor
IPC: B22D17/30
Filed: 1963-02-12
Abstract: 971,679. Casting-machines. DOW CHEMICAL CO. Feb. 12, 1963 [Feb. 14, 1962], No. 5634/63. Heading B3F. Molten metal is supplied to the shot chamber 17 of a vacuum die-casting machine through a large bore suction tube 13, the flow of metal being controlled by the opening and closing of a valve 11 at the intake end of the tube.
Patent GB-511699-A (GB)
Title: Improvements in and relating to rotary valves
IPC: F01L15/06
Filed: 1938-02-23
Abstract: 511,699. Fluid-pressure engines. PIMM, A. W. Feb. 23, 1938, Nos. 5648 and 18517. [Classes 122 (ii) and 122 (iii)] A rotary cylindrical valve cut-off and compression are independently variable without alteration to admission and release by means of arcuate members 8 adjustable to vary the inlet and exhaust port openings 3, 10 in the valve chest. The valve ports comprise separate frame members secured to the valve by a plate. Packings 15, 18 are provided at the ends of the inlet 5 and exhaust valves 6 respectively. According .to the first Provisional Specification any of the edges of the valve or valve chest ports may be adjustable to vary any valve event.
Patent GB-779026-A (GB)
Title: Closure means for barrels or other beverage containers
Inventor: GRETTON-LOWE REGINALD
IPC: B65D39/08
Filed: 1955-02-25
Abstract: 779,026. Tap-hole bushes. GASKELL & CHAMBERS, Ltd. Jan. 18, 1956 [Feb. 25, 1955], No. 5667 /5:5. Class 21. The bush comprises a metal sleeve 4, Fig. 3, secured within a hole in a container 5 and having an inwardly directed flange 4a at its inner end, a wooden bush 6 in the sleeve 4 having a bore tapering inwardly from the outer end of the bush, means for preventing rotation of the bush 6 relative to the sleeve 4, and a screw-threaded annular member 8 engaging a screw-threaded portion of the outer end of the sleeve 4 to hold the bush 6 against the flange 4a which has an inclined face on the side presented to the bush so that the corner of the flange will bite into the bush to form a seal. When a portion of a tap or other dispensing apparatus is forced into the outer end of the bore a cork or bung 7 in the bore is forced into the container 5. The means for preventing relative rotation may be complementary flats on the interior of the sleeve 4 and on the exterior of the bush 6 as illustrated in Fig. 2. A dust cover 9 of cardboard or other readily breakable material may be clamped between the member 8 and the bush 6.
Patent GB-122553-A (GB)
Title: Improvements relating to Removable Cover Protectors or Tread Bands for Motor and like Tyres.
Inventor: GILL JOHN HARLEY
IPC: B60C27/16
Filed: 1918-04-03
Abstract: 122,553. Gill, J. H., and Rea, J. D. April 3, 1918. Tread bands.-A detachable tread band 1 of rub. ber or other flexible material, formed with scalloped edges 13, is secured over the tyre cover 6 by screws 9 bearing on washer plates 10 and engaging nuts 6 having flanged bases 8 recessed into the tyre cover as shown. To exclude grit &c., the band may be additionally secured by rubber solution.
Patent GB-735870-A (GB)
Title: Improvements in electrostatic separation processes and apparatus
IPC: B03C1/00
Filed: 1952-03-04
Abstract: 735,870. Electrostatic separators. INDUSTRIAL DISTRIBUTORS (1946), Ltd. March 4, 1952 [March 8, 1951 ; April 13, 1951], No. 5671/52. Class 117. In an apparatus for the electrostatic separation of, for example, diamonds from gangue, the material is fed through a hopper 4 to an earthed electrode 5 consisting of a metallic roll, and passes through a field set up between the electrode 5 and electrodes 7 and 8. The electrode 8 is a roll made of insulating material and the electrode 7 consists of a plate of insulating material which deflects material affected by the field from the stream passing the electrode 5 and into the orbit of attraction of the electrode 8, the material being collected in bins 6 according to the degree of deflection. The electrodes 7 and 8 are connected to the same D.C. supply, but alternatively the potential on electrode 7 may be larger than that on electrode 8, and instead of being earthed the electrode 5 may have a potential of opposite polarity to that of electrodes 7 and 8. In a modification, Fig. 2 (not shown), two charged insulating plates are arranged between the rolls, and in a further modification, Fig. 3 (not shown), the arrangement of Fig. 1 is provided with an additional fixed plate and roll.
Patent GB-1360909-A (GB)
Title: Fabric treating composition and process for treating fabrics
IPC: C08L25/08
Filed: 1972-02-07
Abstract: 1360909 Styrene copolymer/surfactant compositions S C JOHNSON & SON Inc 7 Feb 1972 [22 Feb 1971] 5678/72 Heading C3P [Also in Divisions C4-C5] A fabric treating composition comprises (1) an aqueous solution of at least one surfactant which is an anionic or nonionic detergent; and a copolymer of 50-65 wt. per cent of styrene and 33-43 wt. per cent of a monoethylenic monocarboxylic acid, and optionally up to 13 wt. per cent of another monomer. Acids specified are acrylic, methacrylic and ethacrylic, and additional monomers are C 1 -C 4  alkyl acrylates, methyl methacrylate, acrylonitrile and methacrylonitrile. A preferred copolymer comprises 55-60 wt. per cent styrene, 35-40 wt. per cent methacrylic acid and 5-10 wt. per cent of isobutylacrylate, and has a mol. wt. of 5000 to 50,000. A long list of well known non-ionic and anionic surfactants is given; those preferred are sodium lauryl sulphate, and a mixture thereof with sodium N-lauroyl sarcosinate. In Examples I and II, copolymers of styrene (60%) and methacrylic acid (40%), and styrene (55%) methacrylic acid (35%) and isobutyl acrylate (10%) are prepared. These are then each used in a composition comprising the copolymer and sodium lauryl sulphate, sodium N-lauroyl sarcosinate, formaldehyde water and ammonia. A further composition comprises a styrene/isobutyl acrylate-methacrylic acid (55% : 10% : 35%) copolymer, the components specified above and in addition cetyl alcohol and disodium phosphate. This composition is converted to a foam aerosol in a can, using isobutane/propane as the propellant.
Patent GB-839921-A (GB)
Title: Driving and extraction apparatus for piles, tubing, sheet piling and the like
IPC: E02D11/00
Filed: 1958-02-21
Abstract: 839,921. Pile driving. BERTHET, F., and DESVAUX, J. Feb. 21, 1958 [Feb. 23, 1957], No. 5775/58. Class 68(2) Pile driving apparatus of the impulse generator type is characterized in that means are provided to enable the generator to produce a percussive effect. The apparatus comprises an impulse generator 1 of the eccentric weight type sliding on pillars 7 connecting a supporting plate 8 to a driving cap 3. Mounted on the supporting plate 8 is an hydraulic jack 4 and in accordance with the invention there is a spring 5 between the jack and the impulse generator. The setting of the jack 4 determines the pressure exerted by the spring 5 and hence the minimum speed at which the impulse generator must run for the centrifugal force to be sufficient to lift a member 6 and produce a percussive force on the driving cap 3. Withdrawal of a pile is effected by inverting the apparatus. A resilient cushion 23 (not shown, see Fig. 4) may be placed between the member 6 and the cap 3. Specifications 687,603 and 780,380 are referred to.
Patent GB-749290-A (GB)
Title: Improvements in writing instruments
IPC: B43K8/16
Filed: 1954-02-26
Abstract: 749,290. Reservoir pens. BUSCHLE, P. Feb. 26, 1954 [March 6, 1953], No. 5789/54. Class 146(3) A stylographic pen comprises a tubular writing member 1 secured to a detachable plug 2, an ink reservoir 11, a piston 13 movable within the reservoir 11 for dispensing ink to the pen tip, and arranged within the pen, a cleaning device comprising a fine wire a coupled to a spindle 6 extending transversely of the pen between the reservoir 11 and a tip section 4 and having an operating wheel 7. The reservoir 11 is detachable from an intermediate section 9, such that, by operation of the piston 13, a flexible tube 10 may draw in ink from a supply. A detent 14 co-operating with a piston-actuating knob 15 permits measured quantities of ink to be supplied to a cavity 4<SP>1</SP> from the reservoir 11 on actuation of the piston 13. The shaft 6 carries a link 5 on which a guide bar 3 carrying the wire a is hooked. The plug 2 may be replaced by a similar plug carrying a different size tube 1. A screw b is removed during writing to admit air through an aperture 12.
Patent GB-457157-A (GB)
Title: Improvements in and relating to mercury vapour generators
IPC: F22B3/02
Filed: 1936-02-26
Abstract: 457,157. Mercury-vapour generators. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Feb. 26, 1936, No. 5791. Convention date, Feb. 27, 1935. [Class 122 (iii)] [See also Group II] In a generator for mercury vapour or vapour from mercury containing sodium, lithium, or aluminium, the up-tubes and the down-tubes of a wall screen element are both exposed to radiant heat, and liquid-vapour, separating- means connect the ends of the tubes. The separators aid in inducing the circulation of fluid in the tubes. Pumping means are also provided. The up and down tubes 11, 12 are arranged in staggered formation. The upper ends are connected to headers 13, 14 including liquid-displacers, and the headers are connected to a separator 17. Similarly the lower ends of the tubes are connected to headers connected to a separator 21. The lower header and separator are connected by a pump 25. The separator, Fig. 3, has an inlet 16 which leads to a space 29 through tangential, tapered guide vanes 30. The fluid is thrown out with increasing velocity towards the wall 32. At the top the fluid is passed outwardly by other vanes 34 arranged in a spiral chamber. The liquid passes down pipes 36, 37 to the return pipe 15. The vapour passes to an upper chamber through a cylindrical member 41 and a third series of vanes 44 connecting a plate 45 to a second plate 40 mounted on pillars 39. This chamber is provided with an outer serrated wall. Liquid thrown down returns to the lower chamber. A part of the kinetic energy of the mixture in the separator is used to recirculate the liquid. In a modification, the headers corresponding to the headers 13, 14 form the two halves of a vertically-divided, single header. One of these is connected to the drum of a porcupine-type boiler directly, and the other through a strainer with the vapour space thereof.
Patent GB-490304-A (GB)
Title: Improvements in and relating to paper feeding attachments for typewriting machines
IPC: B41J15/14
Filed: 1937-02-26
Abstract: 490,304. Typewriters. LAMSON PARAGON SUPPLY CO., Ltd., and GARWOOD, V. W. Feb. 26, 1937, No. 5824. [Class 100 (iv)] Web-guiding arrangements; carbon - sheet arrangements.-A frame mounted on the platen-carriage is provided at the top with one or more web-guiding rollers, and is provided also with a plate or apron having means for guiding the webs and a carbon set on to the platen and for arresting the carbon set. The apparatus shown in the Figure comprises standards 4 detachably secured to cross-bars 19, 20 on the carriage by means of clamps 21 and screws 23. A flanged roller 6 for guiding the webs 8 is mounted at the rear of the standards, and an apron 9 for guiding the webs and carbon set on to the platen 12 is mounted on pivots 13 on the standards. The apron is provided with a curved top 10 or a roller, and is provided also with flanges 11, 11a for guiding the webs and the top strip of the carbon set respectively. The apron is formed with web-guiding flanges and is provided with a plate 15 for arresting the carbon set. The web pack is placed on the floor or desk. Specification 469,922 is referred to.
Patent GB-622008-A (GB)
Title: Improvements in and relating to methods of making glass-to-metal seals
IPC: H01J9/32
Filed: 1947-02-28
Abstract: 622,008. Glass-to-metal seals. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 28, 1947, No. 5845. Convention date, March 1, 1946. [Class 36] A plurality of metal conductors 6 and an outer ring 8 are sealed into a glass body 9 by supporting said metal parts 6, 8 in a fixture 1, supporting the body 9 from one of said metal parts 8 and heating the assembly until the glass flows on its exposed surfaces and settles into its final position without touching the fixture 1. The glass 9 is placed over the conductors 6 so that its flange 11 rests on the annular member 8 and its lower portion rests above flanges 7 on the conductors 6. As the supporting edge 11 softens it is drawn by surface tension and gravity into the cavity between the body 9 and member 8. Similarly, other parts of the softened member 9 settle into the conductors 6 and engage the flanges 7, without touching the fixture 1.
Patent GB-608540-A (GB)
Title: Improvements in and relating to the production of tetrahydrofurfuryl alcohol
IPC: C07D307/12
Filed: 1946-02-26
Abstract: Foraminate nickel catalysts (for use in the hydrogenation of furfural and furfuryl alcohol) may be prepared by alloying nickel with a metal which is more soluble in acid or alkali, converting the alloy into granular form, and treating the granules with acid or alkali so as to remove a part of the alloying metal.  Suitable alloying metals are aluminium, zinc and silicon.  Catalysts so prepared from nickel-aluminium and nickel-silicon alloys may be reactivated by treatment with a current of hot dilute caustic soda solution passed preferably in the opposite direction to the flow of the materials during the reaction.  Examples are given in which furfural and a mixture thereof with tetrahydrofurfuryl alcohol are hydrogenated by passage through a tube packed with alternate layers of foraminate nickel-aluminium catalyst and silicon chips. Specifications 570,843 and 608,565, [Group IV (b)], are referred to.ALSO:Tetrahydrofurfuryl alcohol is prepared from furfural or furfuryl alcohol by a liquid-phase hydrogenation process in which the starting material and hydrogen are caused to flow at a raised temperature and pressure past a foraminate nickel catalyst.  The process may be effected continuously at 50-200 DEG  C. and 50-500 atm. pressure, and a part of the reaction product may be returned to the reaction zones. Hydrogen substantially free from carbon monoxide, sulphur and ammonia is preferably used, but the process may be effected either under anhydrous conditions or in the presence of water.  An alkali, such as sodium carbonate, may also be present.  Examples are given in which furfural and a mixture thereof with tetrahydrofurfuryl alcohol are hydrogenated by passage through a tube packed with alternate layers of foraminate nickel-aluminium catalyst and silicon chips.  The Provisional Specification states that cobalt may also be used as the catalyst.  Catalytic agents, preparation and treatment of. Foraminate nickel catalysts may be prepared by alloying nickel with a metal which is more soluble in acid or alkali, converting the alloy into granular form, and treating the granules with acid or alkali so as to remove a part of the alloying metal.  Suitable alloying metals are aluminium, zinc and silicon.  Catalysts so prepared from nickel-aluminium and nickel-silicon alloys may be reactivated by treatment with a current of hot dilute caustic soda solution passed preferably in the opposite direction to the flow of the materials during the reaction.  Specifications 570,843, [Group III], and 608,565 are referred to.
Patent GB-377606-A (GB)
Title: Thread-case for sewing machines
IPC: D05B57/26
Filed: 1932-02-29
Abstract: 377,606. Sewing-machines. FAIRWEATHER, W. C., 65, Chancery Lane, London.-(Singer Manufacturing Co. ; Elizabeth, New Jersey, U.S.A.) Feb. 29, 1932, No. 6000. [Class 112.] Lock-stitching by hooks.- A thread case for a sewing machine from which the thread carrying bobbin may be readily removed comprises a base 7 with no projections except a cylindrical wall 9 bevelled at its upper edge on the inside at 12 and notched at a diametrically opposite point 10. An inclined thread slit 13 terminating in a thread hole 14 is positioned in the wall 9 under the bevelled portion 12 and tends to prevent the bobbin from rising above the thread case. Slight upward pressure on the bobbin at the notch 10, which is situated on the opposite side of the case from the operator, tilts the bobbin so that it may be grasped and extracted from the case.
Patent GB-798607-A (GB)
Title: Fuel oil compositions
IPC: F02B3/06
Filed: 1957-02-22
Abstract: A fuel oil composition contains a polymer or copolymer of the ester formed by reacting an alkoxylated aliphatic alcohol and an unsaturated carboxylic acid.  The alkoxylated alcohol is obtained by reacting a C3 to C20 alcohol, preferably an oxo alcohol, with a C2 to C6 alkylene oxide.  The alkoxylated alcohol is then esterified with an unsaturated dicarboxylic acid, such as fumaric or maleic acid, or with an unsaturated monocarboxylic acid of formula (R)(R1)C= C(R11)COOH, where R, R1 and R11 are hydrogen, halogen, alkyl, hydroxy or mercaptan groups.  The unsaturated ester is then polymerized or copolymerized with an unsaturated compound which may be an unsaturated hydrocarbon such as styrene, an unsaturated ester, such as vinyl acetate or an ester of a C3 to C20 oxo alcohol with fumaric, maleic or methacrylic acid, an unsaturated nitrile, such as acrylonitrile, or the anhydride of an unsaturated dibasic acid, such as maleic anhydride.  The polymer or copolymer may be added to gas oil to form a 1 to 10 per cent by weight concentrate, and added to diesel oil or gas oil to form a composition containing 0.001 to 0.5 grams of the polymer or copolymer per litre of fuel.  In examples a C9 oxo alcohol is reacted with ethylene oxide, and then esterified with fumaric acid, the ethoxylated diester is copolymerized with vinyl acetate and a mixed maleate/fumarate ester of a mixture of C16 to C18 oxo alcohols, and the copolymer is added to gas oil.
Patent GB-472800-A (GB)
Title: Device enabling the position of a movable carriage relatively to a fixed frame-work to be ascertained with precision
IPC: G01B3/00
Filed: 1937-03-01
Abstract: 472,800. Measures of length. ATELIERS L. DOIGNON, ANCIENS ATELIERS FROMENT SOC. ANON. March 1, 1937, No. 6094. Convention date, Jan. 7. [Class 106 (ii)] To enable a carriage to be adjusted with precision relative to a fixed scale the carrier is provided with a flexible indicating pointer rigid with the carriage which is provided with means for giving it a fine adjustment by flexion. The carriage 1 moves on guides 2, one of which is provided with a scale 4 with which is adapted to register an index 9 on a pointer 5 rigidly connected to the carriage. The pointer is cut away at 8 to afford a fulcrum about which it may pivot when the upper end is moved by a micrometer screw 11 carried on the carriage and adjusted by a head 12. A magnified image of the index is given by an optical system involving a light source 15, total reflecting prism 17 and telescope 18 carried on a bracket 20 of the carriage.
Patent GB-922972-A (GB)
Title: Improvements in or relating to a mold for centrifugal pipe casting
IPC: B22D13/10
Filed: 1961-02-20
Abstract: 922,972. Centrifugal casting-machines. COMPAGNIE DE PONT-A-MOUSSON. Feb. 20, 1961 [March 1, 1960], No. 6107/61. Class 83 (1). In a centrifugal casting machine for casting bell-ended pipes T the socket core C is held in place by a metal ring B clamped by levers 9 pivoted on the mould and urged toward the clamping position by a spring F, one end of each lever having a lug 12 which projects inwardly of the mould wall to lock the metal ring, and is retractable, when the mould is stationary, when engaged by the metal ring as this is introduced into the mould. During rotation the levers are urged into clamping engagement with the ring by the centrifugal force exerted on the free ends 11 of the levers. During the stripping of the casting in the direction opposite to the arrow f<SP>1</SP>, Fig. 1, the engagement of the ring B with the chamfers 13 on the levers causes the lugs 12 to be retracted so that the ring B is extracted from the mould body simultaneously with the pipe. In a modification, Fig. 6, the lugs 20 are separate from the levers 24, which are loaded by helical springs 28.
Patent GB-214963-A (GB)
Title: Process of separating animal and vegetable fibres
IPC: D01C5/00
Filed: 1924-03-10
Abstract: 214,963. Ogden, S. A. April 24, 1923, [Convention date]. Carbonizing rags and fabrics. - In recovering wool from a mixture of wool and cellulose or silk, a protective substance is formed on the wool fibres and valuable by-products may be recovered from the solution. The material or fabric, which may be in the form of clothing, is passed rapidly through sulphuric acid preferably of 50 BÚ. at a temperature of approximately 65 C. The cotton is rapidly dissolved and the solution tends to form a coating on the wool fibres and to protect them from the action of the acid. The wool is then as quickly as possible passed into a washing bath to avoid damage by acid. Where the proportion of cellulose &c. is small the wool in the material treated may be protected before treatment with acid by dipping in a thin cellulose paste. Specifications 55/55 and 1330/55 are referred to.