baber/WOPTO huggingface dataset:
Patent GB-696499-A (GB)
Title: Improvements in and relating to variable electric resistance devices
IPC: H01C10/10
Filed: 1950-12-05
Abstract: 696,499. Variable contact resistances. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 5, 1950 [Dec. 22, 1949], No. 29755/50. Class 37. A variable resistor comprises two metallic plates, one necessarily resilient and one necessarily curved and presenting a convex surface to the other, and both coated with conducting elastomeric material and so arranged that one coated surface faces the other with the area of contact varied by electromagnetic control or otherwise to produce the required operational change in resistance. In Fig. 1 a copper or aluminium disc carries a coating 5 directed towards coatings 10 formed on trapezoidal, Fig. 2 (not shown), and diverging leafsprings 6. An actuator 14 secured to an armature 15 exerts variable pressure on the leafsprings 6 to change the area of contact between coating 5 and coatings 10 responsively to movement of the armature 15 biased by a spring 17 and controlled by an electromagnet 20. The resistance of the device may increase to a maximum at the point where the free ends of the leaf-springs 6 are under no pressure from the actuating plate 14. Under this condition insulating sectors 4 appropriately interposed as clearly shown in Fig. 3 ensure a maximum resistance of appreciable value. A desired maximum resistance may be obtained by selection of the insulating sectors 4 and selected initial pressure of the actuating plate 14 which is obtained by screwing out or in a mounting ring 11 within the enclosing casing and locking by bolts 12. The electromagnet 20 may be screwed further towards or away from the armature 15 and locked in the chosen position by bolts 22 so to vary the sensitivity. The conducting elastomeric material forming the coatings 5 and 10 is preferably a graphitefilled silicone rubber. Specification 594,481, [Group IV], is referred to.
Patent GB-1452436-A (GB)
Title: Oxide negative resistance element
IPC: H01C7/00
Filed: 1974-07-05
Abstract: 1452436 Resistor composition TOKYO SHIBAURA ELECTRIC CO Ltd 5 July 1974 [9 July 1973] 29822/74 Heading C1J [Also in Division H1] An oxide negative resistance element consists of sintered material containing 89À9 to 20 mole% of ZnO, 10 to 60 mole per cent of MgO and 0À1 to 20 mole per cent of MnO 2 . The element 1 is made by mixing powdered oxides, hydroxides &c. of the metals, presintering, pulverizing adding a binder, shaping by pressure and sintering. Silver electrodes 2, 2<SP>1</SP> are then applied.
Patent GB-1015689-A (GB)
Title: Centrifugal furnace for fusion and casting under vacuum, particularly of dental or goldsmith alloys
IPC: A61C13/20
Filed: 1962-08-03
Abstract: 1,015,689. Centrifugal casting-machines. L. RIGATTI-LUCHINI. Aug. 3, 1962 [Aug. 5, 1961], No. 29929/62. Heading B3F. [Also in Division H5] In a centrifugal vacuum fusion and casting apparatus, a double-walled water cooled housing encloses a graphite crucible in a fusion chamber heated by an electrical resistance heater and communicating with a mould. The assembly is mounted on a rotatable disc driven through gearing by an electric motor. Before centrifuging commences connection is made to vacuum applying means and electrical supply means, the connections being retractable to permit the assembly to be rotated after melting is completed, the cooling of the furnace continuing during rotation.
Patent GB-1311636-A (GB)
Title: Element matching device
IPC: G09B7/06
Filed: 1971-06-25
Abstract: 1311636 Teaching appliances R A NELSON 25 June 1971 [30 June 1970] 29969/71 Heading G5G Control and element cards are both provided with visible indicia and code means, which code means enable the correction or otherwise of matching of the visible indicia to be recognized when element and control cards are superposed. The cards may be used for teaching spelling or for more general question and answer applications. In a first embodiment (Fig. 3) each control card 10 includes an area 18 for visible indicia and an area 26 for coded apertures 30- 35. Each element card 12 includes visible indicia 20 and an area 36 for coded apertures 39--42. In use, a control card is inserted into a frame including members 200 and 201 followed by an element card bearing a letter to complete the partial word appearing on the control card. If a correct choice has been made, a voltage + V applied to a spring-contact member 66 is connected through aligned pairs of apertures by way of conducting plate 74, spring-contact member 72, conducting plate 76 and spring- contact member 70 to an indicator 71. In a modification of this embodiment (Fig. 9, not shown) the code apertures (540-546) are arranged in single columns down the ends of the cards, electrical connection in this case being established through single aligned pairs of apertures between a column of spring contacts (524) and a contact plate (532). A switch (530) in series with the spring contacts is arranged to be closed when an element card is inserted but not by control cards which have cut away corners (536). In a further modification of the first embodiment (Fig. 4), detection of correct matching is achieved by light from extended light sources 80, 84, 88 and 92 being detected by photo-cells 82, 86, 90 and 94 respectively, the sources 84, 88 and 92 only being energized when the respective adjacent photo-cell is energized. Alternatively, light rays could be deflected by mirrors or light pipes. In a second embodiment (Figs. 5 and 6), control cards 100 provided with pictorial indicia such as a car 102 are arranged for sliding vertically upwards into a frame 250, 252 whilst element cards 110 provided with letter indicia are inserted vertically downwards. When inserted, coded aperture areas of the control and element cards overlap; spring contacts 150 and conducting plates 122 being provided as before for each letter position of the word to be spelt. Lamps are illuminated as each correct element card is inserted and on completion of a complete word. Words of varying lengths are accommodated by switches being selectively made or broken by cut-outs of varying depths in the control cards. The control cards may be replaced by a continuous roll with code apertures arranged in single rows thereacross (Fig. 13, not shown). The use of jets of air to detect matching is referred to. The codes in control and element cards may be complementary so that correct maching is indicated by absence of current or light.
Patent GB-305290-A (GB)
Title: Improvements in and relating to receptacles for medicaments
IPC: B65D83/00
Filed: 1927-11-09
Abstract: 305,290. Joyce, J. A. Nov. 9, 1927. Addition to 261,825. Piston apparatus for discharging receptacles. - A container for medicaments comprising a piston 1 carrying a tube 5 in which is slidably mounted a valve 4 closing the end of a tube 3 passing through the piston. When the valve 4 is pressed down against the spring 6 the end of the tube 3 is opened, and on further pressure the piston 1 is moved into the container 2, expressing the contents through the tube 3 into the valve 4. In another form, the piston is long and the tube 5 short.
Patent GB-1515726-A (GB)
Title: Cable-operated power manipulators
IPC: B25J3/04
Filed: 1975-07-17
Abstract: 1515726 Manipulators COMMISARIAT A L'ENERGIE ATOMIQUE 17 July 1975 [18 July 1974] 30105/75 Heading B8H A power manipulator of the articulated type comprises a stationary body 4 on which are mounted at least four motors 2 and on which an arm 6, 8 is pivotally mounted on an axis 4 of general rotation, the arm being provided with a barrel unit 3 subjected to said general rotation about its longitudinal axis and carrying upper arm 6 pivoted on a shoulder pin 5 intersecting said axis 4. Lower arm 8 is pivoted on an elbow pin 7 at right angles to the plane defined by the upper and lower arms 6, 8. The lower arm 8 carries a wrist pivot-pin 9 supporting a component, shown as a tong unit 10. The rotation of the upper arm 6 about the shoulder pin 5 is controlled by one of the motors 2. A cable fastened to a pulley 15 fixed to the upper arm 6 and rotating about the axis of the pin 5 has two oppositely acting lengths 16, 25. The length 16 is attached to a movable pulley block 17 and a length of cable 18 attached to the barrel unit 3 passes over and between the pulley block 17 and a fixed pulley block 17<SP>1</SP> and then over pulley blocks 20, 21 to a capstan 24 carried by the shaft of the motor 2. The oppositely acting cable length 25 has a similar cable system placed symmetrically in the barrel unit 3 and is attached at 26 to the capstan 24 on the opposite side thereof. The lower arm 8 is actuated by a second one of the motors 2 by a cable system similar to that for the upper arm 6.
Patent GB-877574-A (GB)
Title: Improvements in or relating to devices for working crop lying on the ground
IPC: A01D78/00
Filed: 1957-09-25
Abstract: 877,574. Side-delivery rakes. VAN DER LELY N.V., C. Sept. 25, 1957 [Sept. 29, 1956], No. 30115/57. Class 6(3). A side-delivery rake comprises a wheeled frame of trapezium shape in plan view capable of being drawn in various directions and having bearings for rake-wheels arranged on one of its parallel sides. The frame includes two parallel beams 1, 2, interconnected by arched cross-members 3, 4, 5, which are extended downwardly beyond the beam 2 to carry vertical bearings 6, 7, 8, for horizontal beams, such as 13, carrying pairs of rake-wheels in groups 9, 10, 11. Each beam 13 has two alternative bearings 17, 18, at each end for rake-wheel cranks 20 and is supported by an adjustable swivel-wheel 39 the plane of rotation of which can be locked by a pin and apertured segment 53, 57. Further swivelwheels 36, 37, support the ends of the beams 1 and are attached to drawbars 44, 45. The device may be arranged for turning three narrow swaths, as in Fig. 1, by being drawn in the direction V by the drawbar 44. For side-delivery, Fig. 2 (not shown), the beams 13 are rotated in their bearings in a clockwise direction till the rake-wheels are all parallel. For tedding, Fig 4 (not shown, the beams are rotated anti-clockwise until the rake-wheels are all parallelbut do not feed to one another. For turning two wide swaths, Fig. 3, rake-wheels 32, 33, 34, and their cranks are removed from the groups 9 and 10 and mounted in the bearings 60 on the beam 1. The group 10 is then turned so that its foremost rake-wheel 35 co-operates with the group 11, the device being then drawn in the direction U by the drawbar 45. Specification 877,578 is referred to.
Patent GB-519477-A (GB)
Title: Improvements in or relating to soluble mineral oils suitable for use in metal working
IPC: C10M173/00
Filed: 1938-10-18
Abstract: 519,477. Cutting-oils. STANDARD OIL DEVELOPMENT CO. Oct. 18, 1938, No. 30118. 'Convention date, Jan. 11, 1938. [Class 91] Cutting-oil consisting of an aqueous emulsion of mineral oil is rendered non-foaming by adding up to 5 per cent. by weight based on the oil of an ester wax of an organic acid containing 5-50 per cent. of free acid, which free acid and also the acid radical of the ester contains at least 22 carbon atoms. Waxes specified are montan, wool wax, "OP," and " Z " waxes. Light lubricating, white or spindle oil is mixed with an emulsifying agent consisting of alkali or " onium" naphthenates or sulphonates, together with the wax and if desired a small amount of alcohol. The product is a soluble oil readily emulsified with water. Dyes, antioxidants, thickeners, and resins may be added.
Patent GB-338665-A (GB)
Title: Improvements in or relating to electric discharge vessels
IPC: H01J17/04
Filed: 1929-10-04
Abstract: 338,665. Siemens & Halske Akt.- Ges. Oct. 5, 1928, [Convention date]. Vacuum tubes.-In a discharge device, more particularly a double-wave gas-filled rectifier, having an electrode support wire 2 surrounded by a glass tube 4 which is fused for a part of its length into the press 1 to avoid injurious discharges such as backignition, the glass tube is fused with a material 5 which is placed between the support and tube, and has a coefficient of expansion similar to that of the glass. A quartz tube may be placed over the support and glass tube, and may extend from the press up to the electrode. A constantan support 2 is formed with a platinum sealing-in wire 3 and is wound with copper foil over which the glass tube is forced. The glass and copper are then fused together, the, upper and lower ends of the glass tube being slightly turned over.
Patent GB-525493-A (GB)
Title: Anti-dazzle device for protection against strong sources of light in night traffic
IPC: F21V11/18
Filed: 1937-11-04
Abstract: 525,493. Preventing dazzle. MELNHOF, F. MAYR-. Nov. 4, 1937, No. 30268. Convention date, Nov. 11, 1936. [Class 75 (iv)] In order to prevent dazzle all cars going in one road direction have revolving shutters &c. on them tuned in by hand to a road-side synchronizing standard 7. Cars coming the other way have their shutters, of course, suitably out of phase.
Patent GB-990314-A (GB)
Title: Impregnation of refractory shapes
IPC: C04B41/47
Filed: 1963-08-01
Abstract: Porous burned refractory shapes are impregnated by preheating at 200-450 DEG  C. placing in a reducing atmosphere to evacuate air and moisture, submerging in a pool of fresh pitch (defined), increasing the pressure to saturate the shapes, all while still within the temperature range, releasing the pressure, removing and cooling. Magnesia is exemplified and increases 6-10% in weight through impregnation. Specifications 817,446 and 926,148 are referred to.
Patent GB-505210-A (GB)
Title: Improvements in or relating to the treatment of palm oil and products thereof
IPC: C11B3/00
Filed: 1937-11-08
Abstract: 505,210. Food fats. SULLIVAN, F. M. Nov. 8, 1937, No. 30600. Convention date, Nov. 7, 1936. [Class 84] [Also in Group III] Palm oil for use in shortening and other edible products is decolorized by heating at 200-350‹ C., and removing the heat-decomposed colour substances. The heat treatment may be effected at atmospheric, raised, or reduced pressure, in an atmosphere of steam, nitrogen, or carbon dioxide, and preferably in aluminium apparatus. The products may be treated with (1) alkali, e.g. sodium or potassium hydroxide or carbonate, (2) an adsorbent, e.g. clay, carbon, kieselguhr, or (3) hydrogen, and decolorization may be effected by distillation under reduced pressure with steam. A shortening is made by treating the heat-decolorized palm oil with caustic soda, and then adsorptive clay; the oil is then blended with alkalirefined coconut and cotton seed oils, and with alkali-refined and hydrogenated cotton seed oil. The blend is treated with superheated steam, cooled, filtered, and homogenized on a lard roll. Specification 327,990, [Class 91], is referred to.
Patent GB-412830-A (GB)
Title: Improvements in or relating to means for pre-compressing the charge for internal combustion engines
IPC: F02B37/00
Filed: 1933-11-06
Abstract: 412,830. Supplying charge. BUCHI, A., Winterthur, Switzerland. Nov. 6, 1933, No. 30819. Convention date, Nov. 12, 1932. [Class 7 (ii).] In a rotary apparatus for supplying charge of the sliding vane type, exhaust gas from the engine is admitted and discharged by pipes 19, 20 and thus drives a rotor 17 as an expansion motor ; the charge is blown by an auxiliary compressor through a side port 22, a portion leaving by a diametrically opposite port, and a portion comprising the main charge is compressed and forced into the combustion chambers, through non-return valves 28. The auxiliary compressor, and a further impeller exerting a suction on the charge, may be mounted on the shaft of the rotor 17, the rotation of which may be assisted by a connection 29 to the crank shaft. A byepass from the exhaust manifold, controlled by a valve opened at the end of the exhaust periods, and connected by a pipe 30 to the exhaust pipe, allows scavenging air to be blown through the combustion chambers. The apparatus is cooled by water circulated through a jacket 36 by pipes 40, 41. A byepass 27, controlled by a non- return valve, allows air to be drawn into the combustion chambers at starting. In a modification, in which a separate apparatus is provided for each pair of cylinders, the separate rotors are mounted on the same shaft, which may be coupled to the crank shaft, and auxiliary exhaust valves are mounted in the cylinder heads through which a scavenging charge is blown direct to the exhaust pipe at the end of each exhaust period.
Patent GB-874252-A (GB)
Title: Improvements in or relating to electric circuits for deriving unidirectional voltages from alternating voltage power supplies
IPC: H05B41/32
Filed: 1958-09-26
Abstract: 874,252. Electric supply &c. systems; voltage multiplying circuits. GENERAL ELECTRIC CO. Ltd., BRABHAM, H. B. S., and RIBCHESTER, E. Aug. 18, 1959 [Sept. 26, 1958], No. 30828/58. Classes 38 (2) and 38 (4). D.C. from a voltage-doubling rectifier circuit, which consists of two arms in parallel comprising condensers 5, 6 and oppositely poled rectifiers 7, 8 is supplied to a photographic flash tube by taking the output from a capacitor 9 connected across condenser 5, 6. The capacitor 9 has a value which is at least ten times larger than that of two similar capacitors 5, 6 so that when the A.C. supply from the multivibrator 3 is switched on the current taken from the supply is limited more by the capacitors 5, 6 than the capacitor 9. This current is also limited by resistor 12. The output supplied from capacitor 9 to the electrodes 18, 19 of flash tube 2 is sufficient to initiate its discharge. The discharge is initiated by discharging a capacitor 23, by means of a test switch 25 or contact 24 operated when a camera shutter is actuated, through a transformer 27 which is connected between a trigger electrode 30 and electrode 19. Capacitor 23 is charged from capacitor 5 through leads 20, 11 and two resistors 21, 22.
Patent GB-1456192-A (GB)
Title: Process for the cold working of stainless steels
IPC: B21C9/02
Filed: 1975-07-23
Abstract: 1456192 Drawing; stamping PRODUITS CHIMIQUES UGINE KUHLMANN 23 July 1975 [24 July 1974] 30831/75 Headings B3P B3Q [Also in Division C5] In the cold working of stainless steels, are used as lubricants carbon fluorides that are of the formula CF x  where x is between 0À4 and 1À1, and have been synthesized from natural graphite, artificial graphite, coke or activated charcoal. The carbon fluoride may be used alone or mixed with known lubricants, e.g. calcium stearate or zinc stearate. Processes referred to are wire drawing and cold stamping. The use of carbon fluoride avoids the need for repeated surface treatments between drawing and stamping steps.
Patent GB-1191065-A (GB)
Title: A Process for the Introduction of Scrap into a Liquid Metal
IPC: F27D3/00
Filed: 1968-06-28
Abstract: 1,191,065. Refining iron. INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE. June 28, 1968 [July 13, 1967], No.30832/68. Heading C7D. A method of continuously supplying an additional charge of metal in the form of scrap into the enclosure of an enothermic refining process, includes charging scrap into a melting space, chamber 3, the lower part of which is in communication with a refining space, chamber 1, via an orifice 10. A pile of scrap is maintained in chamber 3 by a feed from conveyor 13 and is progressively melted owing to the temperature gradient between the refining chamber and the melting chamber. Liquid metal to be refined is added to chamber 1 through orifice 4. The oxygen jet from lance 6 produces a foam of refined metal and slag which over-flows into chamber 2; the slag settles and is withdrawn via orifice 8 while the underlying molten metal flows over spout 9. The rate of feed of scrap may be adjusted depending on the rate of melting, so as to obtain a steady position of the melting front. In an alternative embodiment Fig. 2 (not shown) refining is carried out in the refining chamber by oxygen blown through a porous element in the base of the chamber as well as through the lance, and also by oxygen blown through a porous element in the base of the settling chamber
Patent GB-356532-A (GB)
Title: Means for improving the adhesion of footwear to the ground
IPC: A43C15/10
Filed: 1930-10-15
Abstract: 356,532. Ice grips and like devices. NAHON, J. M., 16, Paseo del Prado, Madrid. Oct. 15, 1930, No. 30863. Convention date, Jan. 17. [Class 17.(ii).] Plates a with hooked projections only slightly visible are secured between the upper and insole, insole and welt, or other desired position in a boot &c. for the attachment by links e of antislipping chains e<1>, the ends of which are detachably connected to a link d, which may be resilient or in the form of a spring. Another chain g may extend from the link d to a connection f on the sole near the heel. The plates a may be connected by a cross member extending across and under the sole. Rubber or other resilient material may be secured between the chains and the sole. Specification 300,454, [Class 17 (ii), Boots and shoes, Construction of], is referred to.
Patent GB-1171016-A (GB)
Title: Method of Detecting Faults in the Surface of a Body of Resilient Material.
Inventor: KLING HANS
IPC: G01M13/00
Filed: 1967-07-05
Abstract: 1,171,016. Testing for and measuring faults in materials. GOETZEWERKE FRIEDRICH GOETZE A.G. July 5, 1967 [July 6, 1966], No. 31034/67. Headings G1M, G1N and G1S. A feeler for detecting flaws in a resilient material comprises a beam 7 pivoted at 6 and bonded at one end by a spring 11 to a predetermined position, the other end supporting the sensor 9. In operation as the sensor traverses the surface of the material, any discontinuities increase the friction between the sensor and the surface, thus pivoting beam 7 which, on its return motion, actuates Piezo-electric transducer 3.
Patent GB-427290-A (GB)
Title: Improvements in connection with apparatus for dispensing beverages
IPC: B67D1/14
Filed: 1934-10-30
Abstract: 427,290. Dispensing beer &c. REID, J., 20, Martyr Street, Townhead, Glasgow. Oct. 30, 1934, No. 31059. [Class 116] Relates to apparatus for dispensing beer or other fermented or aerated beverages, of the kind comprising a secondary vessel to which the beverage may be delivered from a supply, for partial de-gasification, and from which it may be dispensed by means of a multi-way cock ; and consists in forming the secondary vessel of opaque material incorporating integrally therewith one or more transparent longitudinal panels or strips. As applied to the liquid dispensing apparatus described in Specification 403,692, the secondary vessel 5 is of transparent glass having an outer covering of opal glass except on the outer face of a raised longitudinal inspection panel 8 which is thus transparent and integral with the material of the vessel. In a vessel of prismatic section, one of the faces may be left transparent. The vessel may have an externally screwed neck 9 engaging with a packing ring in a socket 10 of the dispensing fitting 3. A vent 11 may be fitted.