baber/WOPTO huggingface dataset:
Patent GB-1203523-A (GB)
Title: Improvements in or relating to holding relays
IPC: H01H51/01
Filed: 1968-04-26
Abstract: 1,203,523. Electromagnetic relays. SIEMENS A.G. 26 April, 1968 [27 April, 1967], No. 19811/68. Heading H1N. A holding relay has its armature movable between and retained by separate oxide containing permanent magnets having similar temperature - magnetization characteristics. The U-shaped armature A has its links secured by non-biasing hinge springs F on the outer arms of an E-shaped yoke M having a winding W on its centre limb which is also secured to a permanent magnet DM1. The coil mounting H also supports a second magnet DM2 which normally biases the armature to the position shown. Both magnets DM1 and DM2 are polarized in the same direction along the line of armature movement and magnet DM2 has a magnetic backing plate B to improve the flux distribution and act as a magnetic screen. In an alternative arrangement (Fig. 2, not shown) the second permanent magnet is polarized in opposite directions at its ends and a separating plate is provided between the armature and second magnet. Preferably the magnets are of a material containing barium oxide or strontium oxide.
Patent GB-1003132-A (GB)
Title: Seal assembly for a bore
IPC: F16J1/00
Filed: 1964-05-13
Abstract: 1,003,132. Piston packing. R. E. NELSON. May 13, 1964 [July 3, 1963], No. 19859/64. Heading F2T. In piston packing comprising a cup seal member 1 of elastomeric material having a coefficient of thermal expansion greater than that of the cylinder material the member 1 is clamped between an outer cup retainer 3 and an inner cup retainer 2 having a radius of curvature r 1  (Fig. 2) less than that rf of the member 1 in its free state, the member being deformed by the outer cup 3 to conform to the curvature of the inner cup 2 whereby the edge e of the member maintains sealing contact with the cylinder wall 9 over a wide temperature range. The cups 2 and 3 are preferably of metal and the member 1, which may be of polytetrafluoroethylene, is clamped tightly between them only at its central portion so that it is free otherwise to move radially therebetween. When the member 1 contracts due to a decrease in temperature it simultaneously rolls around the inner cup thereby tending to move the edge e radially outwards and thus maintaining the sealing contact pressure with the wall 9.
Patent GB-199326-A (GB)
IPC: A61B7/02
Abstract: 199,326. Blakeborough, R. A. Nov. 24,1922. Stethoscopes. - A device for audiblv detecting leakage of water comprises a rod b attached to a head a screwed to receive a cap c. Within the cap are two diaphragms d, e, normally held apart by a coiled spring f. The rod g and spring h bear against the underside of the diaphragm e. By screwing the cap c the central part of the diaphragm e may be made to impinge yieldingly against the diaphragm d, but this is stated not to be essential as the vibrations of the rod are otherwise transmitted from the inner diaphragm to the outer by means of the spring f. The device may also be used to detect knocking of engines.
Patent GB-658997-A (GB)
Title: An improved method for covering hay-ricks and the like with portable and extending covers and the erection of barns and the like by the same means of construction
IPC: E04B7/02
Filed: 1948-07-27
Abstract: 658,997. Rick corners&c. HOULISTON, W. July 27, 1948, No. 20028. [Class 20(i)] A roof for hayricks or semi-permanent structures comprises principals b to which are fixed brackets c into which clip spring clips h on the end of purlins d. The upper part of bracket c forms a staple for holding bars e which hold down the roof covering sheet f. A narrow strip a resting on brackets c pass, joins the edges of the roof covering sheets f. The roof is fixed by hooked anchors forced into the rick or bolted to other structures. Walls of barns &c. may be constructed as above by substituting verticals for the roof principals.
Patent GB-640980-A (GB)
Title: Improvements in or relating to bearing mountings
Inventor: BARLOW BENJAMIN WILLIAM
IPC: F16C35/04
Filed: 1948-07-28
Abstract: 640,980. Bearings. NAPIER & SON, Ltd., D. July 28, 1948, No. 20105. [Class 12 (i)] A resilient bearing mounting, as for a gas turbine rotor, comprises an inner sleeve supported with clearance in an outer sleeve by one or more resilient metal strips dividing liquid-filled chambers therebetween, the strips having a spring as well as dashpot damping effect on shaft vibrations due to out - of-balance &c. The inner sleeve 14 houses the outer race of a ball or roller bearing (not shown), and its periphery has a series of grooves 16 interposed by ribs 17, thereby forming oil dashpot chambers 23, 24 in which the curved resilient strips 18 are so situated as to permit relative radial yielding between the inner and outer sleeves 14, 10. The ends of the chambers are substantially closed by a series of rings 25, 26 having alternate clearance with the inner and outer sleeves and which are axially secured by an end-plate 27. Passages 12, 13 convey oil to the dashpot chambers and bearing respectively. Dogs 29 on the inner sleeve 14 engaging slots 30 in the end-plate 27 prevent significant relative rotation thereof. In modifications, the inner sleeve may comprise the bearing-member, the dashpot forming slots and ribs may be on the outer sleeve instead of the inner sleeve, and the described end seals may be replaced by piston-ring type seals.
Patent GB-394819-A (GB)
Title: Churns for butter making
IPC: A01J15/14
Filed: 1932-07-16
Abstract: 394,819. Butter ; centrifugal mixing- apparatus. DU LUSIGNEUL, A. P. G. F., Le Manoir, Bourth, Eure, France. July 16, 1932, No. 20171. [Class 84.] In centrifugal butter-making apparatus of the kind comprising an inverted rotatable cup 1 which is partially immersed in the milk or cream and is provided with air-inlet holes 3 in the top, holes 5 are provided near the lower edge of the cup through which the air drawn in through the holes 3 is distributed into the liquid. The holes 3, 5 may be provided with gills facing respectively in the direction of rotation of the cup and in the opposite direction. The cup is rotated through bevel-gearing 17, 18, and the receptacle 12 for the milk or cream is adjustable in height. relatively to the cup. The apparatus may be used for washing the butter when made.
Patent GB-678219-A (GB)
Title: Improvements in or relating to axminster looms
IPC: D03D39/06
Filed: 1949-08-03
Abstract: 678,219. Bobbin brakes for Axminster looms. GOODWIN, F. J. July 26,1950 [Aug. 3, 1949], No. 20203/49. Class 142(ii) A bobbin brake for an Axminster loom comprises a shoe 18 for engagement with the rim of the bobbin cheek 15 and pivotally mounted on a bobbin clasp 1, and means for rocking the shoe about its pivot so that as the bobbin clasps rise the brake is freed, and as the bobbin clasps are lowered the brake is applied. Means are provided for releasing the usual flat spring brake attached to the bobbin frame so that the shoe 18 exercises full control over the bobbin.
Patent GB-183487-A (GB)
Title: A starting device for railway wagons
IPC: B61J3/10
Filed: 1922-07-24
Abstract: 183,487. Rossarie, A. P. July 25, 1921. [Convention date]. Prizing-tools.-A starting device for railway wagons comprises a main frame 1 which is provided with a roller 20, whereby it may roll on a rail 18, and a wedge-shaped member 13 adapted to engage the wagon wheel 22. The member 13 is raised to start the waggon by means of a toothed sector 5 coacting with teeth on the member 13 and actuated by a hand lever 7. When the device is in the starting position the roller 20 may be raised from the rail by pressing down a lever 9 fixed to a wedge 8 pivoted to the frame 1 at 10 and provided with a removable cast steel end' 11. The member 13 is slidable on guides 16 on the frame 1 and carries a pointed stud 17 for engaging the wheel, an aperture 23 being provided whereby a tool may be inserted to remove the stud.
Patent GB-408951-A (GB)
Title: Improvements in the manufacture of fuel
IPC: C10L1/32
Filed: 1932-07-18
Abstract: A suspension of coal or the like in oil is stabilized by starch mixed or not with caustic soda.  The starch may be dry or emulsified in water.  There may be added water- or oil-soluble combustion accelerators, e.g. sodium or potassium salts or boric acid; combustion catalysts, e.g. ferric oxide, aluminium chloride; and oxidizing agents, e.g. potassium nitrate.  Ozone may be mixed with the air used for the combustion.  In an example, 40 lb. of coal, 60 lb. of oil obtained by the destructive distillation or hydrogenation of coal or shale, and an emulsion in water of 0.25 lb. of starch and 0.25 lb. of sodium chloride are ground for 5 hours in a Rex bar mill. Water up to 10 per cent by volume of fuel may be used.  The coal may be ground with only part of the oil, the remaining oil being added later.  According to the Provisional Specification sulphite lye or other emulsifying agent may be used as the stabilizer.
Patent GB-205887-A (GB)
Title: Improvements in bituminous concrete pavements and method of making same
IPC: E01C7/18
Filed: 1922-07-25
Abstract: 205,887. Jackson, W. J. Mellersh-, (Hacker, W. E.). July 25, 1922. Macadamized roads.- Relates to bituminous macadamized roads of the kind in which a superficial layer C of fine mineral aggregate coated with bituminous material is laid upon, and bonded by compression to, a primary layer B of coarse mineral aggregate coated with bituminous material laid upon an ordinary foundation A; and consists in grading the aggregate of the primary layer so that it shall contain not more than 18 per cent of voids. An aggregate of which 40-70 per cent is too large to pass through a sieve having half-inch round openings, 15-40 per cent passes through the first sieve but is retained on a No. 10 mesh sieve, and 15-28 per cent passes the No. 10 mesh sieve, is stated to be suitable. Instead of the intermediate size aggregate, a mixture in which material retained on a No. 4 mesh sieve forms 10-25 per cent of the total aggregate while material passing through the No. 4 mesh sieve but retained on the No. 10 mesh sieve forms the remaining 5-15 per cent, may be substituted. The layer C contains 8-17 per cent of bitumen. Specification 18518/14 is referred to.
Patent GB-817221-A (GB)
Title: Improvements in or relating to electric cooking vessels
IPC: A47J27/00
Filed: 1956-07-02
Abstract: 817,221. Electrically heated vessels. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. July 2, 1956 [July 8, 1955], No. 20394/56. Class 39(3) [Also in Group XXXVII] An electrically heated thermostatically controlled cooking vessel comprises side walls, a bottom wall in which is located a sheathed heating element and a thermally responsive sensing device, and a separable handle, having two vertically disposed horizontal gripping portions, within which is located an adjustable temperature control. As shown, a cast aluminium vessel 10 is formed with side walls 11 and a flat rectangular bottom wall 12 which has bosses 14 to take legs 15 and a boss 16 to which is secured a handle 18 having upper and lower gripping portions 19 and 20 joined at their opposite ends, the portions 20 being fastened to the boss 16 and the portion 19 being spaced from the side wall 11. A passage 21 extends through the portion 20 and communicates with a recess 24 which is formed in the outer end of the handle to receive a manually adjustable thermostatic control device 25 (see Group XXXVII). A sheathed heater 31 in a rectangular or loop pattern is cast integrally with the bottom wall 12 in a raised rib 30. A tube 34, cast within a further rib 33 extending from the boss 16 across the centre of the area enclosed by the heater, defines an elongated opening for a liquid filled thermally responsive bulb 35. The terminal portions 31a of the heater 31 extend into the passage 21 and are connected in series with a switch 50, by insulated leads 52, 52a, and 52b to supply terminals 51 and 51a (Fig. 4, not shown). The contacts 50a, 50b of the switch 50 are actuated by the control device 25 which has a diaphragm element 53 connected by a capillary tube 55 to the bulb 35 and which is thus responsive to the temperature of the bottom wall 12. Reference has been directed by the Comptroller to Specification 772,268.
Patent GB-194235-A (GB)
Title: Improvements in or relating to coupling links for chains and the like
IPC: F16G15/04
Filed: 1922-07-26
Abstract: 194,235. Freeman, D. W. July 26, 1922. Chain couplings. - In chain-coupling links of the kind comprising two C-shaped members A, B fitting together to form a complete link, each member is formed with lugs or ears A<1>, B<1> adapted to embrace the other member, the two members thereby being locked together.
Patent GB-295276-A (GB)
Filed: 1928-07-13
Abstract: 295,276. I. G. Farbenindustrie Akt.- Ges. Aug. 8, 1927, [Convention date]. Acetonitrile; pyridine bases.-The reaction of acetylene with ammonia at an elevated temperature is performed with the use of catalysts consisting of a plurality of compounds, preferably oxides, which are not reducible under the conditions of the reaction, but not consisting solely of hydrated silicates, deposited on alumina gel or silica gel. Mixtures of zinc oxide with irreducible oxides of the third or fourth periodic group supported upon the above mentioned carriers are mentioned as suitable catalysts. The catalysts may be. regenerated by heating in damp air, and the process may be effected continuously by using a series of reaction vessels, the catalysts in each being regenerated in turn when exhausted. The presence of a little moisture in the catalysts is advantageous, but not essential, and the yields may be increased also by applying pressure. In an example, an acetylene-ammonia, mixture is passed at 450‹ C. through a, series of tubes containing a catalyst prepared by impregnating active silica with an aqueous solution of zinc and thorium nitrates, drying the mass, and calcining it in air. Acetonitrile is the principal product. Specification 283,163 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) states that the catalyst may be a mixture of non-reducible oxides in porous form, or a mixture of alumina gel and silica gel and contains an example in which an acetyleneammonia mixture is passed at 350‹ C. over a catalyst prepared by suspending thorium and zirconium oxides in water and drying and breaking up the paste, the products being acetonitrile and pyridine. This subject-matter does not appear in the Specification as accepted.
Patent GB-582663-A (GB)
Title: Production of polymeric organic compounds containing chlorine
IPC: C08F8/18
Filed: 1943-12-08
Abstract: Telomers are made by subjecting one or more compounds having an ethylenic double bond and at least 5 per cent by weight thereof of hydrogen chloride to an elevated temperature in the presence of a catalyst for the polymerization of vinyl compounds and preferably also water.  The unsaturated compounds may be aliphatic or aromatic olefines, halogenated olefines, vinyl esters, ethers and ketones, unsaturated aldehydes, alcohols and acids and their derivatives. Those specified are ethylene, styrene, vinyl cyanide and allyl chloride.  Suitable catalysts are peroxides, persulphates, perborates and percarbonates; oxygen; metal alkyls, e.g. tetra-ethyl lead and tetraphenyl lead; ultraviolet light, especially in the presence of photosensitisers such as mercury, alkyl iodides, benzoin and acetone; amine oxides, e.g. trimethylamine oxide, triethylamine oxide and dimethylaniline oxide; dibenzoyl hydrazine, hydrazine hydrochloride and sebacate; hexachloroethane.  The reaction medium may also contain dispersing agents or organic solvents, e.g. hydrocarbons, chlorinated hydrocarbons, alcohol and dioxane.  Inhibitors, e.g. hydroquinone may be present.  The reaction may be conducted under super-atmospheric pressure and may be carried out as a continuous process.  The products, which may be primary alkyl chlorides, may be subjected to the usual reactions of organic halides to form alcohols, amines, nitriles and esters.  They may be used as solvents, lubricants, wax substitutes and alkylating agents, and in preparing tanning agents, detergents and dyestuffs. Specification 581,899 is referred to.
Patent GB-715821-A (GB)
Title: Improvements relating to the manufacture of sulphuric esters of dextran
Inventor: JAMES ARTHUR EDWIN
IPC: C08B37/02
Filed: 1951-08-30
Abstract: A solution containing dextran sulphate of varying molecular weight is treated with a precipitating agent whereby the large toxic molecules are precipitated first; fractional precipitation then gives one or more fractions of lower molecular weight suitable as blood anticoagulants.  The final solution contains molecules too small to have therapeutic activity and is discarded. The fractions retained are those having intrinsic viscosities between 0.01 and 0.035.  It is preferable to fractionate the dextran before sulphation also, discarding those fractions of intrinsic viscosity above 0.12.  In the examples: (1) a solution of raw dextran is partially degraded with acid, neutralized with lime and fractionally precipitated with acetone; the desired fraction is dried and esterified with chlorsulphonic acid and pyridine, the pyridine salt of the sulphate ester being converted into the sodium salt and the latter freed from pyridine and most of the inorganic salts by successive passage through cation-exchange and anion-exchange resins; the resulting solution is treated with a small quantity of acetone and the precipitate discarded; five further fractions are then precipitated with acetone, the supernatant liquor being discarded; (2) a solution of the sodium salt of dextran sulphate is treated with ethanol until a turbidity appears; the mixture is then warmed until it clears and allowed to cool, when a syrup separates; this is triturated with ethanol to give a powder (first fraction); five further fractions are obtained similarly.  Tables are given of the properties of the various fractions obtained in each example.  The first Provisional Specification refers to the similar treatment of polysaccharide sulphates in general.  Specification 695,787 is referred to.
Patent GB-167484-A (GB)
Title: Apparatus for the use of musicians for spreading the fingers of the hands
IPC: A61H1/02
Filed: 1921-08-03
Abstract: 167,484. Paire, J. Aug. 3, 1920, [Convention date]. Drawings to Specification. Exercising-apparatus.-Relates to apparatus for exercising the fingers of musicians. The deviceconsists of two hinged levers, which are placed between the fingers and pressed apart by a screw- and-lever mechanism. Graduated arcs show the extent of the movement.
Patent GB-1270697-A (GB)
Title: Methods of forming semiconductor devices
Inventor: MURPHY BERNARD THOMAS
IPC: H01L29/864
Filed: 1969-04-23
Abstract: 1,270,697. Semi-conductor devices. WESTERN ELECTRIC CO. Inc. 23 April, 1969 [23 April, 1968], No. 20677/69. Heading H1K. A semi-conductor device is formed by providing a mask on a surface of a semi-conductor body, etching the unmasked portions of the body to produce depressed regions in the surface, thermally oxidizing the depressed regions to at least partially fill them with oxide 12, removing the mask and diffusing dopants into the exposed semi-conductor surface. The device illustrated is an IMPATT diode, comprising an As-doped n+ + Si substrate 11, an As-doped n-epitaxial layer 15, which is subjected to the above-described selective etching and oxidation stages, and a P-type B-doped region 14 diffused into the mesa-like remaining portion of the layer 15. The mask may be of silicon nitride or aluminium oxide, and these materials or zirconium oxide may also be used for a final passivating layer 16. Two such devices may be formed in a common wafer, the excess semiconductor material finally being removed to separate the two devices (71, 72), Fig. 7 (not shown), which remain linked by the oxide and an electrode. If the electrode 21 is transparent or meandering in form the device may comprise an avalanche photodiode. A PNPN diode is also described (Fig. 8, not shown), in which the original wafer comprises a P-type layer on an n+ substrate, and after selective etching and oxidation of the P-type layer to form a mesa, further N-type and P-type regions are formed therein by diffusion. Avalanche transistors may also be made in accordance with the invention.
Patent GB-1344193-A (GB)
Title: Lock nut and a method of forming the same
IPC: F16B39/284
Filed: 1971-04-19
Abstract: 1344193 Forming lock-nuts TRW Inc 19 [19 Feb 1970] April 1971 20684/71 Heading B3A [Also in Division F2] A method of forming a lock nut comprises the steps of initially deforming a continuous annular wall portion of a tubular blank 12a at selected circumferentially spaced parts, tapping the blank and subsequently further deforming the said parts in the direction of the initial deformation.  The blank 12a is attached to a flange 14 and is distorted into a triangular form by a three-jaw chuck, or into an elliptical form by a two-jaw chuck. The further distortion is additive to the initial distortion, i.e. the distorted configuration after the initial distortion is accentuated by the further distortion.
Patent GB-1171979-A (GB)
Title: A New Thermoplastic Recording Media
Inventor: ELEY DANIEL DOUGLAS
IPC: G03G5/022
Filed: 1967-05-04
Abstract: 1,171,979. Photo-conductive member. NATIONAL RESEARCH DEVELOPMENT CORP. 23 April, 1968 [4 May, 1967], No. 20720/67. Heading H1K. [Also in Division G2] A photo-conductive member comprises a tinoxide-coated glass plate having a photo-conductive coating of triphenylamine thereon. The triphenylamine may be disposed in polystyrene or copoly xylo-styrene. The member may be used for frost imaging in an electrophotographic process.
Patent GB-404708-A (GB)
Title: Improvements in or relating to electronic detecting devices for high frequency carrier waves
IPC: H03D1/26
Filed: 1932-07-22
Abstract: 404,708. Valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and GILL, E. W. B., Merton College, Oxford. July 22, 1932, No. 20722. [Class 40 (v).] Very short waves, i.e. waves below 50 metres, are applied between the anode 1 and cathode 7 of the detector valve to the grid 5 of which a critically selected positive potential is applied so that the natural periodicity of the electron oscillation about the grid 5 corresponds with that of the incoming signal. The anode and cathode are maintained at approximately the same potential, or the anode may be 2 volts negative with respect to the cathode, and the output taken from the grid-cathode circuit. The input is, preferably, from an aperiodic loop 3. Specifications 336,846, [Class 40 (v), Wireless signalling &c.], and 359,785 are referred to and numerical data given of a circuit operating over a band from 12 metres upwards.