baber/WOPTO huggingface dataset:
Patent GB-525486-A (GB)
Title: An improved loose-leaf binder
IPC: B42F13/20
Filed: 1939-02-22
Abstract: 525,486. Filing papers. DREW, M. J. Feb. 22, 1939, Nos. 5886 and 10405. [Class 146 (i)] A loose-leaf binder comprises two relatively movable jaws each consisting of a spaced series of curved teeth secured together, one of them being supported by a circular bearing surface on the other to permit opening and closing of the teeth. The teeth 1, 3, Fig. 1, may be chamfered and may be oblique or scalloped and are joined by curved parts 2, 4 terminating in bearing rings 5, 6. At one end, ring 6 has a hollow crossbar 11 carrying a spring-pressed bolt engaging one of two recesses in ring 5. Near the other end, ring 5 carries a screw 16 entering a slot 15 to prevent longitudinal displacement.. Part 2 is secured to hinged straps carrying butts which are attached to the covers 19, the covers being recessed at 20 to accommodate the teeth 1, 3. In a modification, Fig. 5, the outer part has two sets of teeth 21, 22, the latter being formed with stops 25 for the teeth 23 of the inner part. The teeth may be ribbed and their side edges may be bevelled to ensure free turning of the sheets. Turning of the teeth may be effected by knurled knobs at the ends of the parts 2, 4 or according to the first Provisional Specification by a cap on the inner ring at one end and a cap on the outer ring at the other end.
Patent GB-721370-A (GB)
Title: Improvements in and relating to valves for hydraulic mechanisms
Inventor: WOODLIFF GEOFFREY EDMUND
IPC: F16K31/12
Filed: 1952-03-06
Abstract: 721,370. Electrically - actuated valves. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 24, 1953 [March 6, 1952], No. 5905/52. Class 135. A piston valve for hydraulic systems is actuated by an electromagnet S against a fluid - pressure biasing force, and a space into which the pressure medium is admitted for producing the biasing force or a force partly balancing the biasing force is separated from the space into which the controlled medium is admitted. As shown, high and low pressure fluid is supplied to the valve by conduits A, D respectively and the outlet B is connected to one of those supplies according to the position of the piston. The biasing force is derived from the conduit A and acts on the upper end E of the piston whilst a force partly balancing the biasing force acts on an extension at the lower end H. In a modification, the lower extension of the piston is omitted and the biasing force acts on an upper portion of the piston intermediate in diameter between the control lands and the spindle and working in a cylinder which is separate from the space into which the controlled medium is admitted.
Patent GB-678258-A (GB)
Title: Improvements in and relating to electron emitters
IPC: H01J17/06
Filed: 1951-03-12
Abstract: 678,258. Cathode materials and processing. BRITISH THOMSON-HOUSTON CO., Ltd. March 12, 1951 [March 31, 1950], No. 5910/51. Class 39 (i). A thermionic cathode comprises, or consists of, at least one boride, e.g. hexaboride, of calcium, barium, strontium, thorium, uranium or the rare earth metals such as lanthanum, cerium, neodymium or misch metal. Powdered boron and metal powder or filings may be mixed and pressed and sintered to 1375-1850 C. in vacuum or helium or argon to the required shape or to produce a mass which is ball-milled and made into a spray or paste with amyl acetate, water or a cellulose binder. The paste may be applied to a directlyheated cathode, which consists of a helix wound on a wire core, and sintered at 1600 C. A boride rod, supported and connected by conducting coatings to end rods, may be heated directly or by a surrounding helix. A screengrid valve has a cathode in the form of a rimmed disc 19 which contains sintered boride 22 and is heated by thermal and thermionic radiation from a filament 20. Emission curves of various borides are included in the Specification.
Patent GB-1376372-A (GB)
Title: Stable pyroelectric elements
IPC: H01L37/02
Filed: 1972-02-08
Abstract: 1376372 Electrets KUREHA KAGAKU KOGYO KK 8 Feb 1972 [9 Feb 1971] 5913/72 Headings H1K and H1M A pyroelectric element comprises an electret formed from a film of a homopolymer or copolymer of vinylidene fluoride having sufficient proportion of the #-type crystal structure that the ratio of infra-red absorption D 530 /D 510  is less than 4À0. Stable pyroelectricity is achieved by depolarizing most of the spacecharge polarization of the electret by shortcircuiting opposite surfaces of the film while heating it at a temperature below its melting temperature and above its working temperature as a pyroelectric element. The copolymerizable monomer may be tetrafluoroethylene, trifluoroethylene hexafluoropropylene, trifluorochloroethylene, vinylidene fluorochloride or vinyl fluoride. In an example copper electrodes are vacuum deposited onto mono-axially stretched polyvinylidene fluoride film, a D.C. potential of 400 kv./cm. is applied for 30 minutes at 90 C., then the temperature is reduced to room temperature before removing the field. The surfaces of the film are short-circuited while it is heated at 80 C. for one hour, or left at room temperature for, e.g. six months. The electrodes providing the field may alternatively be plates spaced from the film surfaces.
Patent GB-338085-A (GB)
Title: Improvements in washing machines more particularly for washing crockery
IPC: A47L15/06
Filed: 1930-02-22
Abstract: 338,085. Proksch, F. Feb. 22, 1930. Plates, dishes, and the like, washing.- A washing-machine particularly applicable for washing crockery is characterized by a propeller having two or more blades 6 arranged on a shaft 4 at different scattering angles so as to drive the washing liquid to all parts of the chamber 3, as indicated in the dotted lines. The cover 9 of the vessel has a downwardly-projecting rim 10 which engages between the upper edge of the vessel 3 and a ring 11 having angle supports 12 attached to a ledge 13 on the vessel. The lower edge of the ring 11 is bent towards the vessel walls to deflect any escaping washing water. The cover 9 also carries an electrical contact 15 which allows passage of current to a motor 5 only when the cover is closed.
Patent GB-1490959-A (GB)
Title: Electrical oscillators
IPC: H03H9/02
Filed: 1976-02-16
Abstract: 1490959 Oscillators; surface wave devices MULLARD Ltd 16 Feb 1976 05967/76 Headings H3T and H3U A surface acoustic wave oscillator designed to have improved frequency stability, comprises a plate 1, e.g. of piezoelectric quartz of lithium niobate, Fig 3, having means 10-16 on two opposed major surfaces adapted to interact with surface acoustic waves and defining on each surface at least one distance D, the said means being connected in a circuit, Fig. 5, such that the distances defined on both surfaces are effective in determining the frequency of the oscillator, whereby bending of the plate 1 produces opposed changes in the distances defined on the two surfaces, and consequent changes in the frequency of the oscillator are small. In the embodiment of Fig. 3 a resonant cavity is formed on each surface by pairs of grating reflectors 10, 11 and 14, 15 made up of elements 13 which may be grooves or conducting strips. If the effective cavity lengths are D on both surfaces of the plate when undistorted, bending which increases one length to D + #D will decrease the other length to approximately D-#D. Interdigital transducers 12, 16 couple the cavities in parallel into a feedback path of an amplifier which may comprise the circuit of Fig. 5, or alternatively may be a tunnel diode negative resistance amplifier, Fig 4 (not shown). In another embodiment, Fig. 1 (not shown), the plate has a launching interdigital transducer (2) and a receiving transducer (3) forming a first delay line on one surface, and a similar delay line (4, 5) on the other surface, the two delay paths being of equal length D. The delay paths are connected in parallel in a regenerative feedback loop (6), Fig. 2 (not shown), of an amplifier (7). In other arrangements (not illustrated) the transducers and/or the delay paths may be connected in series. By making the lengths of the two delay paths slightly different the oscillator may be rendered tunable.
Patent GB-235280-A (GB)
Title: Improvements relating to machinery belt couplings
IPC: F16G3/06
Filed: 1924-03-08
Abstract: 235,280. Showell & Sons, Ltd., E., and Harris, E. H. March 8, 1924. Belt fastenings. - A coupling or fastening for machinery belts comprises a shank 9, slightly curved and formed with an integral head 9<a> and a detachable head 11, retained by a pin or cotter 12 which is in serted in a hole in the shank and seats in a groove or recess 11<a> in the head 11. Teeth or projections 9<b> are formed on the belt-engaging faces of the heads.
Patent GB-101390-A (GB)
Title: Improvements in or relating to Internal Combustion Engines.
Inventor: BUGATTI ETTORE
IPC: F02F11/00
Filed: 1916-04-26
Abstract: 101,390. Bugatti, E. Dec. 31, 1915, [Convention date]. Addition to 100,298. Cylinders, cooling.-The cooling jacket described in the parent Specification is modified at its lower end to slide in the flange g of the cylinder. As shown, the end of the jacket d enters a groove m in the cylinder flange g, the joint being made water-tight by a compressible band n secured in position by a ring p.
Patent GB-109783-A (GB)
Title: Improvements in or relating to Beams or Girders.
Inventor: EMILIO LULING
IPC: E04C5/065
Filed: 1917-04-27
Abstract: 109,783. Luling, E., and Baroni, M. Sept 22,1916, [Convention date]. Void [Published under Sect. 91 of the Act]. Addition to 105,927. Girders and beams; reinforced concrete.-Beams and girders and the cores for reinforced concrete beams are made up of a number of longitudinal rods a which are separated from one another by distance-pieces d and are bound together by exterior bindings c, which may be formed of wires applied hot and having their ends twisted together as shown at c<1>; or the ends of the binding-bands may be drawn together by bolts or other fastening-devices.
Patent GB-230474-A (GB)
Title: Improvements in operating means for front wheel brakes of motor vehicles
IPC: B60T11/06
Filed: 1925-03-05
Abstract: 230,474. Born, A., (Assignee of Thomen, E.). March 6, 1924, [Convention date]. Brakes, arrangement and disposition of.-The brakes of steering-wheels of motor vehicles are operated pneumatically and means are provided for ensuring an equal braking action on the two wheels. The cam spindle 6 of the brake on each front wheel has rigid thereon an arm connected by a link 8 to a piston 10 working in a cylinder 11 secured to the disc 15 mounted on the stubaxle 16. The cylinders 11 can be connected to a source of pressure through a nipple 12. To ensure that the cam spindles 6 are turned to the same extent and that an equal braking action is thus obtained, they are connected by a telescopic twopart rod 18, 19 pivoted at 20 to each cam spindle, the part 19 having a projection 23 in slidable engagement with a slot 22 in the part 18.
Patent GB-1529232-A (GB)
Title: Microspheric opacifying agents and methods for their production
IPC: C09D5/00
Filed: 1975-09-22
Abstract: 1529232 Preparing UF resin opacifying particles; coating composition CHAMPION PAPER CO Ltd 22 Sept 1975 [23 Sept 1974] 06109/78 Divided out of 1529231 Heading C3R A process for the preparation of spherical, opacifying particles comprises admixing an aqueous, partially condensed, aldehyde condensation product with an oily material and a surface-active emulsifying agent to form a water-in-oil emulsion, admixing an amphiphilic acid catalyst having an ionization constant greater than 10<SP>-4</SP> with said emulsion and polymerizing said aldehyde condensation product in a polymerization zone to form substantially spherical, opaque, polymerized particles which are solid throughout. The condensation product is suitably a urea-formaldehyde prepolymer. An inorganic opacifying pigment may be incorporated into the water-in-oil emulsion.
Patent GB-681104-A (GB)
Title: Improved tyre lug
IPC: B29C73/00
Filed: 1950-03-11
Abstract: 681,104. Wheel tyres. RAWLS, V. March 11, 1950, No. 6181/50. Classes 144 (i) and 144 (ii). Tyres having transverse traction lugs are relugged by buffing and cement-coating the old lug residue and if required, the adjacent tyre portions, applying a replacement lug 28 to the prepared surfaces and securing it by lateral members 29 extending from the replacement lug body over the margins of the old lug and, if required, over the adjacent tyre portions, and vulcanizing the whole in situ. As shown, the lug has side walls 28 sloping inwardly to a tread portion 25, and flanges 29, which have a triangular cross-section, extend outwardly and downwardly from the base edges of the side walls. The underside of the flanges extend inwardly to a lug base portion 26 which may be concave and narrower than the tread portion 25. In applying a replacement lug, the worn tread lug 30 is buffed, cleaned and coated with adhesive, and the underside of the flanges 29 and base 26 of the replacement lug is coated with a layer of cushion gum which may extend beyond the outer edges of the flanges to augment the airtight marginal seal a, Fig. 6. The replacement lug is then stitched down, working from the base outwardly, in the usual manner. The thin outer flange portions forming the seal a are substantially free from stresses, the latter being confined to the thicker flange portions at the junction thereof with the lug body. Should air pockets 32, Fig. 10, be formed during the application of the lug, the tendency to enlarge the air pockets by the stresses set up during use of the tyre will be resisted by the vacuum thus created in the air pockets and ensured by the marginal seal a. The flanged lugs may be applied to flat or raised surfaces and the method of application may be as described in Specification 658,897. The lug 28 may have additional base flanges at its ends or the flanges 29 may extend wholly around the lug base.
Patent GB-291428-A (GB)
Title: Improvements in or relating to laying linoleum and similar floor coverings
IPC: E04F15/04
Filed: 1928-02-28
Abstract: 291,428. Armstrong Cork Co., (Assignees of Wenrich, C. N.). June 3, 1927, [Convention date]. Carpet and like linings.-Linoleum and like floor coverings are laid on felt 3, to the upper face of which is secured a layer 4 of strong paper,. thin sheet metal, or other inextensible sheet material, the linoleum 5 being cemented thereto. The layer 4 may be cemented or stitched to thefelt and may overlap at the edges, and the felt 3 may be cemented to the floor. Strips of the compound lining may be preformed. The Specificatioin as open to inspection under Sect. 91 (3) (a) comprises also textile fabric or wire cloth as alternatives to paper. This subject-matter does not appear in the Specification as accepted.
Patent GB-1331902-A (GB)
Title: Inductive proximity switch
IPC: H03K17/95
Filed: 1972-02-10
Abstract: 1331902 Proximity switches INTERNATIONAL STANDARD ELECTRIC CORP 10 Feb 1972 [15 Feb 1971] 6236/72 Heading G1N An inductive proximity switch of the type in which the oscillations of an oscillator 1 are damped by a conducting and/or ferromagnetic body moving past an inductance 5 forming part of the oscillator circuit is provided with a controllable damping circuit 4 for checking the operation of the switch. When a control signal is applied to terminal 7 of the damping circuit transistor T2 conducts thereby damping the oscillator circuit 1. If the circuit is operating correctly the damping has the same effect as a body being detected and the oscillations of transistor T3 cease causing transistor T1 to switch off and produce a step voltage at 6. Transistor T2 may be replaced by two transistors enabling the damping to be performed in two stages. By replacing transistors T2 by an FET the latter may be used as a variable resistor and a variable control signal may be applied thereto.
Patent GB-921845-A (GB)
Title: Improvements in or relating to methods and apparatus for bonding semiconductive elements and metal surfaced elements
IPC: H01L21/607
Filed: 1961-02-21
Abstract: 921,845. Semi-conductor devices. WESTERN ELECTRIC CO. Inc. Feb. 21, 1961 [Feb. 25, 1960], No. 6283/61. Class 37. In a method of bonding members of semiconductor devices a semi-conductive member such as a silicon wafer and a metal-surfaced member such as a gold-plated header are held together under pressure and their surface temperatures raised to at least the eutectic temperature of the materials of their contiguous surfaces, but to below the melting points of these materials, while ultrasonic energy is applied to at least one of the members to cause a scrubbing action between them. The bonding may be carried out using the apparatus of Fig. 1 which has an atmosphere-controlled enclosure 10 in which a gold-plated header 12 is supported on a platform 11. This platform is aligned with a movable rod 20 which extends through a cover 24, preferably transparent, and compresses a silicon wafer 21 against the header. A heating current from source 22 is passed through the resistive body of the header by two adjustable electrodes 17, 18, one of which is connected to a source 23 of ultrasonic energy.
Patent GB-1390356-A (GB)
Title: Method for the production of organic oils from cellulosic materials
IPC: C10G1/08
Filed: 1971-03-09
Abstract: 1390356 Ketonic oil JOHNSON MATTHEY & CO Ltd 8 March 1972 [9 March 1971] 6341/71 Heading C2C A ketonic oil, usable as a fuel oil, is made by treating a cellulosic waste material with a reducing gas in the presence of a catalyst containing Cu, Ru, Rh, Pd, Ir, Os and/or Pt. The cellulosic material can be newsprint, sugar cane or sugar beet pulp, animal manure, wood pulp, waste corn or waste vegetable products, or waste from food processing. The reducing gas can be hydrogen, carbon monoxide, methane or a mixture containing one or more of these. The reaction can be carried out at 100-950‹ C. and 150-10,000 psi. A suitable catalyst is ruthenium in the form of the metal, an alloy, ruthenium dioxide or an alkaline solution of sodium ruthenate. The catalyst residue can be recovered from the residue of the cellulosic material. The I.R. spectrum of the oils shows the presence of hydroxyl, aliphatic C-H, acidic C = O and ketonic C = O groups.
Patent GB-137428-A (GB)
Title: An improved fuel holder for facilitating the laying of fires in domestic grates
IPC: F24B15/04
Filed: 1919-03-14
Abstract: 137,428. Williams, C. E. March 14, 1919. Laying fires.-A fuel receptacle for laying fires in domestic grates has a front D hinged to the body at its top edge, and a bottom J similarly hinged at its rear edge, the meeting edges of the front and bottom being formed into prongs, as shown in Fig. 3. A lever H engages both the base J and a hook G attached to the front, and is itself locked by a smaller lever K. In use, the charged receptacle is placed in the empty grate, the lever H being then operated to release the front and bottom, so that, on withdrawing the receptacle, the charge of fuel is left in the grate. In the form described in the Provisional Specification, the bottom of the receptacle consists of a sliding drawer, and the hinged front is held by a bolt.
Patent GB-349471-A (GB)
Title: Improvements in the production of hydrogen, carbon monoxide/hydrogen mixtures of nitrogen/hydrogen mixtures
IPC: C01B3/02
Filed: 1930-02-26
Abstract: In the production of hydrogen, alone or mixed with carbon monoxide or nitrogen, partial combustion of gaseous hydrocarbons or gases containing the same is effected with such an amount of oxygen or air that no deposition of carbon occurs during combustion and the gaseous products are passed over solid carbonaceous matter, e.g. coke, at a high temperature, e.g. 1200 DEG  C., the heat generated in the combustion stage being such that no blowing period is required to maintain the temperature of the coke.  Steam may be added either before or after the primary combustion stage.  When dealing with a gas mixture containing 60 per cent of methane, not less than 40 per cent of oxygen must be supplied; more oxygen, however, is preferably employed, e.g. equal volumes of the two gases.  In the case of ethane, more than one volume of oxygen to one of ethane is used, preferably up to two volumes of oxygen to one of ethane.  In practice, a coke bed is provided at one end of the combustion chamber and oxygen, or air, and the hydrocarbon gas are separately preheated, the p  temperature of the hydrocarbon gas being such that carbon is not deposited.  In the case of methane, 900 DEG  C. should not be exceeded, and the preheater should be constructed from materials inimical to the production of carbon, e.g. austenitic alloy steels or silica.  The oxygen or air may be heated to as high a temperature as possible.  The final gas mixture may be catalyzed with steam to convert the carbon monoxide to dioxide which is removed, leaving a mixture of nitrogen and hydrogen.  If pure hydrogen be required, the monoxide and nitrogen may be removed by low temperature treatment. Steam used in the process may be obtained from the heat of the gases after the preheating stage, or by spraying water into the hot gases after leaving the coke bed. An example dealing with methane is furnished and Specifications 29367/10, [Class 55 (i), Coking &c.], and 247,176, [Class 90, Non-metallic elements], are referred to.
Patent GB-741360-A (GB)
Title: Improvements in or relating to cast molybdenum alloys and tungsten alloys containing aluminium
IPC: C22C27/04
Filed: 1952-03-12
Abstract: Cast alloys of Mo and/or W, particularly for parts of turbo jets, rockets, piercing points for making seamless steel tubes, electrodes for heating molten glass and dies for casting brass, contain at least 70 per cent of at least one of the metals Mo and W, O not exceeding 0.05 per cent and Al from a minimum of seven-fifths of the O content, but in any event not less than 0.07, and up to a maximum of 2.5 per cent.  The alloys may contain one or more of the following elements in proportions up to the maximum percentage stated, Ti 14.0 per cent, V 7.0 per cent, Cr 2.0 per cent, Fe 1.3 per cent, Co 0.9 per cent, Ni 0.4 per cent, Nb 10.0 per cent, Ta 9.0 per cent, Zr 2.0 per cent. 0.01-0.5 per cent of Th may also be present.  The alloys may contain no C or up to 0.06 per cent C.  The alloys may be made by mixing Mo and/or W, Al and the other elements, if used, in the form of powders, pressing into pellets, sintering the pellets together into the form of a rod, arc melting the rod as a consumable electrode in an inert gas atmosphere in a closed chamber and collecting the metal in a water-cooled copper mould.  Alternatively, in the production of a Mo-base alloy, Mo and C may be mixed, arc melted in vacuum of not more than 500 microns to lower the O content.  The metal is cast, shaped to rod form and arc melted in an inert atmosphere, the required Al and other desired elements being concurrently introduced into the melting zone.  Specifications 656,796, [Group XXII], and 741,361 are referred to.