baber/WOPTO huggingface dataset:
Patent GB-341495-A (GB)
Title: Improvements in or relating to sound receiving or re-producing instruments or apparatus
IPC: H04R7/08
Filed: 1929-08-09
Abstract: 341,495. Receivers. MARR, A., 23, Reynell Road, Longsight, Manchester. Aug. 9, 1929, No. 24341. [Class 40 (iv).] A sound - reproducing instrument has a diaphragm 7 vibrated e.g. by electromagnets 9, and an auxiliary disc 10 adapted to vibrate in response to the vibrations of the diaphragm 7, the disc 10 being between 50% and 250%, and preferably between 75% and 125%, thicker than the diaphragm 7. The disc 10 is preferably spaced from three to fifteen-hundredths of an inch from the diaphragm 7, and may have a concentric ring of apertures 15, and an aperture 13. The aperture 14 in the cap 6 may be replaced by apertures coincident with the apertures 15 in the disc 10. According to the Provisional Specification, the disc 10 may be smaller than the diaphragm and be mounted on radial screws; a second diaphragm may be used between the disc 10 and the cap 6; and a second disc may be used, secured to the first disc by screws and spaced from it by washers.
Patent GB-185755-A (GB)
Title: Ice-cream freezers
IPC: A23G9/10
Filed: 1922-09-08
Abstract: 185,755. Rollman, M. A. Sept. 9, 1921, [Convention date]. Hand driving-mechanism. - The driving- mechanism for an ice-cream freezer comprises a pinion 26 on a crank-shaft 20 engaging wheels 27, 31 mounted respectively on the squared spindle 28 of the stirrer 38 and on a squared boss 34 on the lid of the cream can 36. The mechanism is carried in a frame 25 riveted to a bridge-piece 14 extending across the open top of the ice tub. The frame 25 is provided with lugs 30, 33 to prevent the wheels 27, 31 from riding out of place. The gear wheels are made of stamped metal, the wheels 27, 31 comprising circular plates with an annular series of elongated holes 37, Fig. 2. The Specification, as open to inspection under Sect. 91 (3) (a) comprises the following subject matter :-The crank 20 is fitted with a wire handle 22, one end of which is free to rotate in a groove 24 in the crank. This subject matter does not appear in the Specification as accepted.
Patent GB-863371-A (GB)
Title: Improvements in and relating to the vulcanization of electrical cables
IPC: B29C33/02
Filed: 1957-08-01
Abstract: 863,371. Moulding coverings on electric cables. COMPAGNIE AUXILIAIRE D'ELECTRICITE ET ENTREPRISE. Aug. 1, 1957 [Aug. 27, 1956; Dec. 10, 1956], No. 24442/57. Class 87(2). [Also in Group XI] A mould for vulcanizing the insulating sheaths of electric cables comprises two shells hinged together and having recesses co-operating to form a bore to receive the cable and having electric heating elements of the screened type embedded therein, the shells being sufficiently massive to enable the vulcanization to be effected without overheating the cable when the mould is heated by the electric heating elements or by a burner flame when electricity is not available. In a mould for vulcanizing insulation around a T-shaped cable joint the mould shells 11, 12 each contain a T-shaped recess 15 and are of light metal, e.g. aluminium or aluminium alloy, having embedded therein a screen type tubular electric heating element 51 or 52. Recesses 53, 54 are also provided to receive any overflow of the insulating material during vulcanization. To enable the mould to be used with cables of various pre-selected diameters annular sleeves 62 of various internal diameters may be placed in the ends of the T-shaped mould cavity. The temperature of the mould during vulcanization may be measured by a thermometer 74, the stem of which may be placed in one of two recesses 71, 72. In an alternative embodiment the electric heating elements are energized through a fuse which is adapted to melt when the desired heating period has elapsed.
Patent GB-985177-A (GB)
Title: Improvements in or relating to the production of high molecular weight linear terephthalate polyesters
Inventor: SAKURAI RYOICHI
IPC: C08G63/82
Filed: 1961-07-06
Abstract: Terephthalic acid (or mixtures of bifunctional acids containing at least 50 mol. per cent terephthalic acid) is purified, largely by known methods, so as to have an iron content not more than 20 p.p.m., an alkali metal content not more than 200 p.p.m. and an optical density in sulphuric acid (as defined in the Specification) not more than 0.2.  Specification 796,909 and U.S.A. Specification 2,578,326 are referred to.ALSO:Linear polyesters are prepared by reacting one or more polymethylene glycols with terephthalic acid or with mixtures of bifunctional acids containing at least 50% mol. of terephthalic acid, the acid or acid mixture having an iron content not more than 20 p.p.m., an alkali metal content not more than 200 p.p.m. and an optical density in sulphuric acid (as defined in the Specification) not more than 0.2. In examples, terephthalic acid or a mixture thereof with isophthalic acid, sebacic acid or p-hydroxyethoxybenzoic acid was esterified with ethylene glycol in presence of calcium acetate and the product polycondensed in presence of antimony oxide and phosphorous acid.  Other glycols and acids listed are: tri-, tetra-, hexa- and deca-methylene glycols; oxalic, glutaric, adipic, hexahydroterephthalic, naphthalene dicarboxylic, sulphonyldibenzoic, diphenic, diphenoxyethane-p,p1-dicarboxylic, 5-phenoxyethoxyisophthalic, 5 - lauryloxyisophthalic, 5 - (sodium sulpho) - isophthalic and p-hydroxybenzoic acids.  Specification 796,909 is referred to.
Patent GB-517999-A (GB)
Title: Improvements relating to foldable perambulators and the like
IPC: B62B7/10
Filed: 1938-08-22
Abstract: 517,999. Folding perambulators. TAN SAD, Ltd., and SHOTT, P. Aug. 22, 1938, No. 24609. [Class 108 (i)] Relates to folding perambulators or the like of the. kind collapsed by movement of the handle towards the vehicle, and consists in a construction of stretcher bar and associated mechanism allowing the handle to be secured to either end of the vehicle without affecting the direction of collapse of the superstructure. The top bar d of the underframe pivotally carries the usual folding parallelogram a, b, c, and a triangular plate f having two pins f<1>. The handle e may engage either pivots d<1> or d<2>, and is provided with a stretcher bar e<1> foldable as usual, and having holes engaging the pins f<1>, to which the bar is secured by a pivoted clip h. The ..plate f is linked to the bar c by a link g. As the handle is moved towards the vehicle to collapse the parallelogram the plate f swings clockwise or anti-clock-wise, depending on whether the handle is at the left or right, respectively, in the Fig. In both cases the parallelogram collapses anticlockwise.
Patent GB-281052-A (GB)
Title: Improvements in dust removal in apparatus for grinding the rollers of carding engines
IPC: B24B55/06
Filed: 1926-10-05
Abstract: 281,052. Greenwood, F. Oct. 5, 1926. Dust, confining on generation. - The wire rollers D of a carding engine and the grinding roller B are carried by a frame enclosed by a structure E, F of sheet iron &c. The upper part F is partly open at the ends, and open at the sides, flexible curtains G at the sides preventing the escape of dust. Light particles are drawn off through branch pipes to a suction pipe H. Heavy particles fall to the bottom and are collected in a receptacle.
Patent GB-786229-A (GB)
Title: Method of introducing additives into molten metals
IPC: C21C1/10
Filed: 1955-08-26
Abstract: In a method of introducing readily melting and readily boiling or oxidizable additives into molten metal flowing through a pouring gate into which the additive is introduced in the solid state, mechanically or by hand, through one or more lateral openings capable of being sealed off to the outside air, the pouring gate is so constructed and dimensioned as to produce a suction effect in the zone of introduction.  The pouring gate is closed on all sides, disposed between a smelting furnace and a ladle, forehearth or mixer, and is preferably downwardly inclined. The lateral openings also may be downwardly inclined and are sealed off by sand or other neutral or insulating substance.  The suction effect may be obtained by injector action i.e. the cross-section of the pouring gate may be widened at the point of introduction.  The method is particularly applicable to the addition of magnesium or a magnesium alloy to molten iron to produce spheroidal graphite cast iron.  Canadian Specification 511,717 is referred to.
Patent GB-600370-A (GB)
Title: Turbine unit
IPC: F02C3/30
Filed: 1946-09-24
Abstract: 600,370. Gas turbines. LEITCH, W. R. Sept. 24, 1946, No. 24634/45. [Class 110 (iii)] [Also in Group XII] The combustion chamber 1 is fitted with a fuel injection nozzle 2, an air injection nozzle 3 and a water injection nozzle 4, the nozzles 2 and 3 being so relatively inclined that their produced centre lines intersect one another within the chamber and the nozzle 4,being so disposed that its discharge end is upstream of the point of intersection. The mixture of combustion gases and steam passes through ducts 5 to the turbine wheel 6.
Patent GB-303212-A (GB)
Title: Improvements in or relating to direction indicators for motor vehicles and the like
IPC: B60Q1/34
Filed: 1928-07-19
Abstract: 303,212. Holland, H. H. July 19, 1928. No Patent granted (Sealing fee not paid). Road-traffic signals on vehicles.-In a roadvehicle signaling device operated by the engine suction, one half or the other of a double-headed arrow sign 2 formed on a hollow slide 1 is moved in front of a fixed lamp 14 by means of a piston 5 sliding in a fixed cylinder 7 and connected to the slide 1 by a rod 6. A three-way cock connects the engine suction either to the end 13 of the cylinder by a pipe 12 or to a mid-point 11 by a pipe 10, and thus controls the movement of the slide 1. The vacuum in the cylinder is released when the cock-handle is in neutral position, air being admitted through a bore in the cock, and the slide is withdrawn by a spring 15. The hollow slide 1 displays a white arrow to the front and a red arrow to the rear,
Patent GB-840726-A (GB)
Title: Process for improving polyolefines
IPC: C08K5/37
Filed: 1956-08-13
Abstract: Polyolefins, particularly those produced by low-pressure processes such as that of Specification 799,392, are stabilized by 0.001 to 2% of mercaptobenzimidazole.  Polyolefins specified are the polymers (and mixtures thereof) of ethylene and/or propylene.  The mercaptobenzimidazole may be added, e.g. as a solution or suspension, during polymerization or during the working up of polymer. Dyestuffs, pigments, fillers and other stabilizers may also be present.
Patent GB-1409708-A (GB)
Title: Austenitic stainless steels suitable for use in phosphoric  acid-containing media
IPC: C22C38/42
Filed: 1974-06-04
Abstract: 1409708 Austenitic stainless steel CREUSOTLOIRE 4 June 1974 [4 June 1973] 24769/74 Heading C7A A cast austenitic stainless steel containing with the balance Fe and unavoidable impurities, is used, e.g. in the heat treated (1150‹C) and water quenched condition, in applications where good corrosion and abrasion resistance is required e.g. pumps, stirreus tanks &c. for heated industrial phosphoric-acid containing media which have fluoride or chloride impurities and abrasive particles in suspension.
Patent GB-245861-A (GB)
Title: An improved book-rest or holder
IPC: A47B23/00
Filed: 1924-10-18
Abstract: 245,861. Brooks, A. G., and Friedberg, J., (Storn, Fisher, & Co.). Oct. 18, 1924. No Patent granted (Sealing fee not paid). Stays.-A book rest or holder comprises a book support pivoted to a bracket secured to a table or the like so that the support may be locked in position when angularly adjusted, and the book is automatically closed when the support is lowered to vertical position. A link i is pivoted at one end to the bracket b to which the book support a is hinged at c and is pivoted at the other end to a slide h on a guide-bar g arranged longitudinally of the support, the bar g being provided with notches l with which a spring pawl i<1> on the slide engages to lock the support after adjustment the bar g being also rotatable by a handle o at one end to disengage it from the pawl for readjustment. One end of the link i serves as the spring pawl i' and is held in the notches l by a spring m placed between the bar g and slide h.
Patent GB-971567-A (GB)
Title: Process for the production of porous tubes
IPC: C08J9/26
Filed: 1962-06-28
Abstract: A process for the production of tubes by extrusion from polyvinyl chloride compositions, the tubes being porous or capable of being made porous, comprises using as starting material a composition of polyvinyl chloride and one or more elastomers and/or alkyd resins, the composition being mixed with a water-soluble salt and having an Izod impact value of at least 20 kg.cm./cm2 at 23 DEG C. sufficient salt being used for the extruded tube to be capable of being made porous by a leaching process.  Immediately after the extrusion the diameter of the hot tube is preferably enlarged to facilitate removal of the salt and increase the porosity.  The quantity of salt may vary from 5 to 80 parts per 100 parts of PVC composition.  The salt is preferably wetted with water before use.  In a table the results are given of tests applied to tubes of PVC and of PVC mixed with various proportions of rubber, and salt particles of 30-40 mesh.  The rubber is a mixture of styrene. butadiene and acrylonitrile-butadiene rubbers. In an example 100 parts PVC of Izod impact value 50 kg.cm./cm2 with 25 parts sodium chloride (4% water-content) are blended, extruded as a tube, stretched while hot and cooled in water (which also leaches out some of the salt).
Patent GB-653365-A (GB)
Title: Improvements in or relating to iodinated pyridone derivatives of carboxylic acids
IPC: C07D213/68
Filed: 1948-09-23
Abstract: Iodinated pyridone derivatives of carboxylic acids of the general formula <FORM:0653365/IV (b)/1> wherein Y is a divalent aliphatic hydrocarbon radical containing from 5 to 9 carbon atoms, are prepared by heating 3,5-diiodo-4-pyridone with a halocarboxylic acid of the formula X-Y-COOH, wherein X is halogen and Y has the above significance, in the presence of an alkali metal hydroxide and then acidifying the reaction product.  The desired iodinated pyridone derivatives may be of the formula <FORM:0653365/IV (b)/2> wherein R is an alkyl group containing from 4 to 8 carbon atoms. Salts of the iodinated pyridone derivatives may be formed with inorganic or organic bases, e.g. sodium hydroxide, diethanolamine or diethylamine. In the examples the following compounds are prepared: alpha - n - butyl-, alpha - n - amyl-, alpha-n-hexyl-, alpha-isoamyl-, alpha-n-heptyl-, alpha-n-octyl- and alpha-isobutyl-3,5-diiodo-4-oxo - 1 - pyridineacetic acids. Specifications 385,214 and 396,414 are referred to.  The Specification as open to inspection under Sect. 91 refers to the preparation of compounds of the above general formula wherein Y represents any divalent hydrocarbon radical.  This subject-matter does not appear in the Specification as accepted.ALSO:An internal radiopaque is obtained by dissolving an iodinated pyridone derivative of the general formula <FORM:0653365/VI/1> wherein Y is a divalent aliphatic hydrocarbon radical containing from 5 to 9 carbon atoms, in an aqueous solution of an equivalent amount of sodium hydroxide, diethylamine or diethanolamine.  The Specification as open to inspection under Sect. 91, refers to internal radiopaque obtained as above but where Y represents any divalent hydrocarbon radical.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1503446-A (GB)
Title: Means for isolating a valve cover for engine vibration
IPC: F02B75/22
Filed: 1976-06-16
Abstract: 1503446 Reducing noise from valve gear CUMMINS ENGINE CO Inc 16 June 1976 [26 June 1975] 24946/76 Heading F1B Valve cover 32 has a groove 42 which receives an elastomeric gasket 46 and is secured to the head 22 by lug bolts 60 which have a shoulder 64 and which have a spring 74 under the head, the clamping force being applied to the cover through an elastomeric grommet 68. In a modification a tubular distance piece is provided for the bolt instead of the shoulder and the spring is a stack of dished washers, or is omitted. In further modifications the gasket 46 is tubular and the part projecting from groove 42 is V-shaped with a narrow flat at the apex of the V, or has parallel sides and a convex contact surface. The gasket is symmetrical in cross-section.
Patent GB-515563-A (GB)
Title: An improved tool or appliance for use in marking or setting out work on surface plates and the like
IPC: B25H7/00
Filed: 1938-08-24
Abstract: 515,563. Measures of length. GARDNER, W. Aug. 24, 1938, No. 24959. [Class 106 (ii)] A device for use on surface plates comprises a base 1, a support 3 of L-shaped cross section carried by the base and vertically adjustable relatively thereto, and means for securing a scale or scales 18 to the outer surface of the upright portion of the support 3. The underside of the base is trued-up and the base provided with pins 2 to guide the support 3 which is bored and threaded to receive a screwed bolt 5 the lower end of which rests on the base 1. The bolt is drilled concentrically and a locking bolt 6 secured to the base passes upwardly through the bolt 5, a milled locking nut 7 being fitted on the end together with a locking plate. 8 secured by a screw 9. A flanged sleeve 10 secured by screws to the support lends rigidity. The bolt is provided with a scale between its head and threaded portion the zero being at the edge of sleeve 10 when the support rests on the base 1. The perimeter of the sleeve may have a scale reading against a mark on the bolt. Screwed bolts 16 pass through horizontal bases in the support 3 and may be moved axially by milled nuts 17 let into slots so as to clamp rules or scales 18 between the heads of the bolts 16 and the undercut serrated edges 15 of strips 12 secured to the support. The zero of the scales can be arranged at any desired height above the surface on which it rests. The support 3,may be raised by turning the bolt 5 and locking it in any position.
Patent GB-1036388-A (GB)
Title: Improvements relating to pressure vessels
IPC: G21C13/00
Filed: 1965-06-14
Abstract: A nuclear reactor or chemical reaction pressure vessel is formed from a succession of abutting parts, namely a first end cover, one or more rings, an intermediate ring, one or more rings, and a second end cover; the assembly is held together by tie bars extending from the end covers to the intermediate ring.  The drawing shows a nuclear reactor pressure vessel which includes coolant inlet 8 in the end cover 4 and coolant outlets in the intermediate ring 5.
Patent GB-1256217-A (GB)
Title: Improvements relating to photo-conductive devices
IPC: H01J9/233
Filed: 1970-05-22
Abstract: 1,256,217. Photoconductors; image pick-up tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 22 May, 1970 [27 May, 1969], No. 24964/70. Headings H1D and H1K. A photoconductive material comprises PbO containing mixed crystals of PbO and SnO. The addition of SnO to PbO decreases the energy gap and hence shifts the absorption edge to longer wavelengths thus improving the red sensitivity. As shown, Fig. 1, the target of a vidicon camera tube comprises a photoconductive layer 15 deposited on a transparent electrode 13 of SnO 2 . The layer 15 may be of uniform composition or may comprise a layer containing mixed crystals of PbO and SnO formed on electrode 13 covered with a layer of tetragonal PbO on which the electron beam impinges. The mixed crystal layer may be formed by evaporating powdery mixed crystals or a mixture of powdery PbO and powdery SnO from a single crucible or by simultaneous evaporation of PbO and SnO from separate crucibles. Methods of preparing the mixed crystals are described. The deposited photoconductive layer is exposed to oxygen ion bombardment by means of a discharge in an O 2  atmosphere to incorporate excess O 2  into the surface of the target to form a barrier for electrons absorbed by the surface from the scanning beam in use. A photoconductive cell may be produced by applying indigitated electrodes to a photoconductive layer containing mixed crystals of PbO and SnO.
Patent GB-1499542-A (GB)
Title: Spreading implements
IPC: A01C15/04
Filed: 1975-01-14
Abstract: 1499542 Spreading implements C VAN DER LELY NV 14 Jan 1975 [18 Jan 1974] 25115/77 Divided out of 1499541 Heading AID The subject-matter of this Specification is also described in Parent Specification, but the present claims are concerned with the holes 43-46 of the flow control plate 42 being one behind the other with respect to the intended direction of operative travel.
Patent GB-901739-A (GB)
Title: Synthetic mica flakes and structures
IPC: C04B14/20
Filed: 1958-08-05
Abstract: Extremely thin discrete flexible platelets of synthetic fluorine mica are formed by exposing a water-swelling synthetic tetrasilicic fluorine mica to sufficient water to pass by absorption into the crystalline structure of said mica along planes of potential basal cleavage thereof, to thereby hydrate said mica sufficiently to cause swelling, and agitating this hydrated mica at not above 550 DEG C. to delaminate it into platelets having a thickness of 10-100 a.u. and having large surface areas in terms of diameter across planes of basal cleavage perpendicular to their thickness, the ratio of average diameter to thickness being in excess of 100:1.  A synthetic mica may be prepared by fusing in an electric furnace a mixture of sodium fluoride, sodium fluosilicate, magnesium oxide, lithium fluoride, and silica.  A large number of synthetic micas are referred to in general terms, the tetrasilicic micas being of primary interest.  By subjecting the product platelets to an ion exchange reaction, some of the cations in the platelets may be replaced by other cations characteristic of non-water-swellable synthetic fluorine micas. The exfoliated may be further delaminated into platelets while dispersed in a volatile liquid, which may penetrate the mica, for example by addition of a reactant which liberated a gas by reaction with the liquid, for example by using a sodium carbonate solution and an acid. The platelets may be formed into sheets of good tensile strength and folding properties, and these sheets may further contain reinforcing fibres, e.g. glass fibres, metal wires, fillers, and larger mica plates.  Such sheets may be formed from sols. by spin casting, cataphoresis, or deposition followed by evaporation.  Alternatively they may be formed from a gel by knife coating, roll coating, or extrusion.  Alternatively a flocculating agent, e.g. acetone, isopropyl alcohol, potassium nitrate, barium nitrate, or aluminium chloride, may be added to a suspension and then the suspension is subjected to conventional paper-making techniques.  The sheets may be dehydrated, preferably by drying at below 100 DEG  C. to remove most of the water, then by careful heating to 200 DEG  C., and finally by heating to 550 DEG  C.-600 DEG  C.  Alternatively the sheet may be soaked in acetone, or similar volatile liquid which will displace the water, and then the acetone is removed from the sheet by evaporation. By subjecting the sheets to reduction a film of metal may be obtained on the surface of the sheets.  In an example mica sheets, which had been subjected to ion exchange to replace some of the ions in the sheets by lead or silver ions, were reduced by exposing them to illuminating gas while heating.