baber/WOPTO huggingface dataset:
Patent GB-592652-A (GB)
Title: Improvements in the production of shaped surfaces
IPC: B29C59/02
Filed: 1945-05-24
Abstract: A shaped polythene surface is made by pressing a mould or former against the surface of an article made of normally solid polythene, e.g. a block of polythene.  Either the mould or the article is heated to a temperature above the melting point of the polythene to shape the surface, and is then cooled below the melting-point whilst the mould and article are still in engagement.  To expel air from between the mould and the article, the centre of the mould may meet the article before the edges of the mould meet it.  The article may be roughly preformed.  The process may be carried out as a succession of heating, pressing and cooling stages.  The shaped surface may be used in the cold pressing of cardboard and metal sheet may be used in conjunction with the mould, and may be strengthened by a metal backing bonded thereto by screws, bolts, the composition described in Specification 544,359 or asbestos as described in Specification 586,768, [Group III].  Specification 554,529, [Group V], also is referred to.ALSO:A shaped polythene surface is made by pressing a mould or former against the surface of an article made of normally solid polythene, e.g., a block of polythene.  Either the mould or the article is heated to a temperature above the melting-point of the polythene to shape the surface, and is then cooled below the melting-point whilst the mould and article are still in engagement. To expel air from between the mould and the article, the centre of the mould may meet the article before the edges of the mould meet it. The article may be roughly preformed.  The process may be carried out as a succession of heating, pressing and cooling stages.  The shaped surface may be used in the cold pressing of cardboard and metal sheet, may be used in conjunction with the mould, and may be strengthened by a metal backing bonded thereto by screws, bolts, the composition described in Specification 544,359, [Group IV], or asbestos as described in Specification 586,768, [Group III]. Specification 554,529 also is referred to.
Patent GB-271641-A (GB)
Title: Improvements in control mechanism for change speed gearing
IPC: F16H63/18
Filed: 1926-05-21
Abstract: 271,641. Triumph Cycle Co., Ltd., and Parnell, F. G. May 21, 1926. Controlling variable-speed gearing.-Control mechanism for variable-speed gearing suitable for motor cycles comprises a rockable shaft 2, Figs. 1 and 2, carrying lugs 20 which slide longitudinally of the shaft relatively to stops 23, 24 which engage the lugs to prevent wrong movements. The stops 23, 24 are fast in a casing part 12 in which the shaft 2 pivots. An arm 14 splined to turn with the shaft 2 supports the bearing pivot 16 of a control lever 3 which engages the end of a stem 21 integral with the lugs 20. From the shaft 2 and fast thereto depends an arm 5 having cam slots 7, 8 for carrying out the gear changes. The lever 3 is biased by a spring 17 into mid position when the lugs 20 engage both stops and so lock the change arm 5. On turning the lever 3 about the pivot 16, the lugs 20 may be thrust clear of one or other stop, so that a subsequent pivotal motion is possible of the lever 3 and arm 5 about and with the pivot, shaft 2 in one direction only, either for changing up or down according to the position of the lugs 20, Fig. 6. A spring bolt 26 helps to lock the change arm 5 in gear positions.
Patent GB-868041-A (GB)
Title: Improvements in or relating to electrical insulation
IPC: H01B3/46
Filed: 1959-04-16
Abstract: A uniform self-adhering rubber tape, for insulating electric conductors, has not more than four plane sides each of which forms an acute internal angle with at least one adjacent side, e.g. the tape may be of triangular or rhomboidal cross-section.  The tape is helically lapped on to a conductor in such a way that each turn is partially overlapped by the abutting side of the next adjacent turn. The material of the tape may be silicone rubber incorporating up to 1% of boron; it may be reinforced with glass cloth or other fabric which may be pre-treated with semi-conductive compound to relieve surface stress, or threads or ribbons of silicone rubber containing carbon black, tin oxide or powdered metal may be embedded in the tape surface where no reinforcement is present.  One edge may be coloured to facilitate precise overlapping and this edge may be semi-conductive for stress relieving.  The newly-insulated conductor may be subjected momentarily to a vacuum, to remove any entrapped air, and then allowed to cure either at room temperature or by heating. Specification 859,284 is referred to.
Patent GB-552571-A (GB)
Title: Improvements in or relating to electric terminals or binding posts
IPC: H01R4/30
Filed: 1941-10-10
Abstract: 552,571. Binding-posts. KOLSTER-BRANDES, Ltd., CORFIELD, D. N., and ATKINSON, A. B. Oct. 10, 1941, No. 13079. [Class 38 (i)] A binding-post of the type having a clamping- nut 6 captive on a screw pillar 1 has a recess 4a that co-operates with an extension 11 on a sleeve 10 secured to the pillar so that the screw-thread is not exposed when the nut is fully unscrewed. The metal part 4 in which the recess 4a is formed is moulded in an insulating body 6 into the open end of which a disc 9 is pressed after assembly. The sleeve 10 has a non-circular portion fitting into a recess in the base 14.
Patent GB-1309944-A (GB)
Title: Preparation of polymers of lactams with reduced crystallinity
Inventor: SEBENDA J
IPC: C08K3/00
Filed: 1970-03-18
Abstract: 1309944 Anionic lactam polymerization POLYMER CORP 18 March 1970 [18 March 1969] 13089/70 Heading C3R In the anionic polymerization of a lactam in the presence of a basic catalyst and absence of a filler there is added prior to complete polymerization a lactam-soluble salt of a metal of Atomic Number 24 to 27. The addition of the salt results in a polymer having a lower crystallinity for the same molecular weight. The salts used are those of Mn<SP>++</SP>, Mn<SP>+++</SP>, Co<SP>++</SP>, Co<SP>+++</SP>, Cr<SP>+++</SP>, Fe<SP>++</SP> and Fe<SP>+++</SP>. They may be used in amounts of 0À05 to 10 mol. per cent and may be introduced into the reaction mixture prior to polymerization. Preferred salts are chlorides, fluorides, bromides and sulphates. In examples, 113 g. caprolactam is polymerized in the presence of 4 g. sodium caprolactam and 1À3 g. chromium chloride and 15À3 g. pyrrolidone in the presence of 0À032 g. sodium hydride and 0À88 g. cobaltous chloride.
Patent GB-564544-A (GB)
Title: Improvements in or relating to alternating-current measuring instruments
IPC: G01R11/185
Filed: 1942-09-17
Abstract: 564,544. Compensating induction meters for temperature errors. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Sept. 17, 1942, No. 13150. Convention date, Sept. 26, 1941. [Class 37] [Also in Group II] An induction-type watthour meter is compensated for phase-shift between shunt and series fluxes due to temperature-effects in the shunt coil, by providing the latter with a quadrature loop or loops symmetrically -arranged with respect to the pole face of the coil, the loop or loops being disposed in slots which are closed by wedges or keys of magnetic material of negative temperature-coefficient of permeability. In Fig. 1, the potential pole 2 is embraced by a quadrature-loop 13, the sides of which are fitted in slots in the magnetic members 9, .10, and the slots being closed by interlocking wedges or keys 16, 17 of negative temperature-coefficient of permeability providing local magnetic paths for the flux due to current in loop 13. A suitable material is a nickel-iron or nickel-copper alloy of 30 per cent nickel, suitably heat - treated. Additional quadrature-loops 18, 19 surround the auxiliary poles 11, 12 which are positioned to carry part of the current-flux. Adjustment to precise phase-relationship may be effected by sliding the wedges lengthwise, Fig. 8 (not shown), by varying the impedance of the loops, or by adjusting them in the direction of the length of the wedges. For example, the ends of the windings constituting the loops 18, 19 may be brought out and soldered together, the adjustment being effected by lengthening or shortening those ends. A similar arrangement is applicable to a meter having both windings on the same face of the disc, the loops and wedges being on the part of the magnetic structure on the opposite face, Fig. 3 (not shown). In Fig. 4, the voltage-pole is slotted to receive adjacent ends 68, 68a of two loops 69, 69a which may have extensions 70, 70a embracing the auxiliary poles 72, 73, the keys 66, 67 being of small diameter. The current-poles may have an additional phase-adjusting loop 75 of figureeight shape, with its ends 76; 77 soldered and adjustable as to length. In a modification, Fig. 6 (not shown), this additional loop 75 may be placed about the centre pole between the slots and above the loops, the slots having a common opening which is closed by a single wedge. Specification 286,517, [Class 37], is referred to.
Patent GB-194977-A (GB)
Title: Improvements in means for ascertaining the compression in internal combustion engines
IPC: G01L19/00
Filed: 1922-05-10
Abstract: 194,977. Jolivet, L. May 10, 1922. Pressure gauges, mounting- details for.-The attachment or holder for the gauge is screwed into a sparking plughole of an internal-combustion engine cylinder and comprises a body c . with a non-return valve e to which is secured by a screwed bush d the tube b which carries the gauge a.
Patent GB-233534-A (GB)
Title: Spring mattress tensioning device
IPC: A47C23/28
Filed: 1924-05-29
Abstract: 233,534. Smith, W. L. May 29, 1924. Mattresses.-A tension-adjusting device for a spring mattress comprises in combination a screw-threaded tubular sleeve c extending non- rotatably through the end rail a, an oppositely screw-threaded sleeve d extending non-rotatably through the movable rail b, and a screw spindle having right and left hand threads e<1>, e<2> to engage the sleeves, and a part e<3> for engagement by a spanner.
Patent GB-971684-A (GB)
Title: A diaper and method of making same
IPC: A61F13/15
Filed: 1963-04-03
Abstract: 971,684. Diapers. G. E. EKBERG, and T. D. GREEN April 3, 1963 [April 5, 1962], No. 13177/63. Heading A3V. [Also in Division B5] A diaper comprises a core 1, Fig 3 of liquid absorbent material (cellulose) completely enclosed by plastic foil layers 2 and 2<SP>1</SP> united by peripheral welded or adhesively secured seams 2<SP>11</SP>. The foil layers are shaped to provide triagular flaps 3 and 3<SP>1</SP> to which fixing means 4, 4<SP>1</SP> (preferably adhesive strips) are attached which can be fastened to hold the diaper around the child. The inner foil layer 2 is heat treated to form porous areas 5 (Fig. 1) by bringing the foil into contact with heat radiating surfaces e.g. a rotary wheel having cog-like projections thus forming a net-like structure 6 which maintains the strength and elasticity of the foil layer but allows moisture to pass through to the absorbent cellulose material. The heat treatment of the foil layer may also be carried out using hot air jets.
Patent GB-132456-A (GB)
IPC: F16H21/28
Abstract: 132,456. White, J., and Malkin, B. March 24, 1919. Shaking-apparatus for wire-cloths.-Relates to means for converting rotary into reciprocating motion applicable to paper-making machines to effect variable movement of the " wire " or the vibrator of a pulp strainer. A rod 2 operated by a crank or eccentric is connected to a slide-block 3 working in diametrical guides in the end walls of a cylindrical casing 4, and the slide-block is linked to a reciprocating plunger 8 in a stationary casing 9. The plunger 8 operates, preferably through a cushion spring 11, the vibratory part 10 of a paper-making machine, &c., and the cylindrical casing 4 may be adjusted angularly round its axis by a hand lever to vary the inclination of the guides and amount of vibration.
Patent GB-423475-A (GB)
Title: Dust-extracting apparatus
IPC: B01D46/00
Filed: 1934-05-02
Abstract: 423,475. Filters for gases. ROGERS, F. H., 181, Queen Victoria Street, London.- (Soc. Puech & Vernon; 27, Boulevard de Latour-Maubourg, Paris) May 2, 1934, No. 13260. [Class 8 (ii)] A filter for gases comprises a mattress of flexible metallic fibres 4 which are secured at one end to a support so that they are free to vibrate under the passage of the gases. The fibres may be of tinsel and secured in tufts on a twisted wire to form a mattress 6 shown mounted in a box 26 above a radiator 12 with a trough 31 for humidifying the air.
Patent GB-132665-A (GB)
IPC: H02K21/32
Abstract: 132,665. British Lighting & Ignition Co., and Bennett, A. E. Nov. 14, 1918. Magneto - electric machines. - Laminated or non-laminated poleshoes A<1>, A<2> are secured at their upper ends to the magnet B without the use of screws by a non-magnetic part E forming a part of the magneto housing, the ends e<1>, e<2> of the part E abut against flanges a<1>, a<2> of the pole-shoes and force these against the magnet limbs. The lower ends of the pole-shoes are secured to the base-plate C by screws D<1>, D<2>. The magnet B is fixed in position by a screw F.
Patent GB-409510-A (GB)
Title: Improvements in and relating to electric retractive switches with delayed return
IPC: H01H13/54
Filed: 1933-05-08
Abstract: 409,510. Press - button switches. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) May 8, 1933, No. 13365. Convention date, May 7, 1932. Addition to 409,075. [Class 38 (v).] In a switch of the kind described in the parent Specification an additional spring is provided for assisting the return action. A push-button f acts through a plunger d on a hollow elastic body b to compress it. When the elastic body has been partly compressed, a flange i on the plunger engages a disc k to compress a spring l until a spring g has been sufficiently strained to move a contact bridge h suddenly downwards past a spring-pressed ball which then holds it in the on position. The button f is returned by the spring g as soon as it is released. The hollow member b gradually fills with air and acts on the contact bridge through the plunger d to cause the bridge to snap to the off position assisted by the spring l acting through the disc k.
Patent GB-605265-A (GB)
Title: Apparatus to maintain food in a heated condition after cooking
IPC: A47J39/00
Filed: 1945-05-28
Abstract: 605,265. Hot-closets. ROBERTSON, M. N. May 28, 1945, No. 13369. [Class 126] [Also in Group XIII] A water - heated jacketed cabinet for keeping cooked food warm and moist is provided with a vent in the jacket allow-. ing steam therefrom to escape into the cabinet, the amount of steam thus escaping being limited by controlling thermostatically the water heater to keep the temperatures in the jacket and in the cabinet constant and in equilibrium. The U-shaped annular steam jacket 28, 30 of the cabinet 2 is heated by an electric heater 52 controlled by a thermostat 24 and escape of steam is provided by a vent 36.
Patent GB-327602-A (GB)
Title: Improvements in or relating to cases for matches, cigarettes or other products
IPC: A24F15/12
Filed: 1929-04-30
Abstract: 327,602. Eschwege et Cie, E. Dec. 22, 1928, [Convention date]. Drawer-and-shell boxes; container pivoted in shell; contents, delivering and facilitating access to; opening-arrangements.-A metal box for toilet sets, matches, cigarettes, &c., is constituted by a drawer movable in a casing closed at one end, a spring which projects the drawer from the casing when a bolt locking device is released, a system of grooves and projections to limit the travel and prevent complete ejection of the drawer, and a hinged cover to the drawer which is raised by a spring as soon as the drawer is pushed out. The articles contained in the drawer mav be raised by means of springs, and a mirror may be provided in the inner face of the cover. A spring 4 in the casing 2 ejects the drawer 1 as soon as the hook 9 on the end of the blade spring 8 is released from the hole 11 in the drawer by the push-button 10. In the closed position, the button 10 lies in the recess 10<a> in the side of the drawer, this recess and the hook 9 being correspondingly bevelled. Grooves 6 and stops 5 guide the drawer and prevent it being completely ejected. In a modification, two drawers are seated in one casing on opposite sides of a central partition. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification in which the casing is open at three sides and the inner container is hinged to one end of the casing. This subject-matter does not appear in the Specification as accepted.
Patent GB-790969-A (GB)
Title: Method of and apparatus for cooking food
IPC: A23L5/10
Filed: 1956-05-01
Abstract: 790,969. Apparatus for cooking food in steam. HEINZ CO., H. J. May 1, 1956 [May 10, 1955], No. 13393/56. Class 28 (1). Food is cooked in a flowable condition by delivering it to a flow of steam travelling sufficiently fast in a confined space to entrain the food and keep it in suspension at a selected pressure until it is cooked, after which it is separated from the stream. Food, e.g. beef, is chopped, ground or mashed and is fed to a hopper 1 leading to a pump 2 which discharges the food at a predetermined uniform rate into an injector. This injector has a central tube 5, with annular holes 5a, within a mixing chamber 6 comprising a casing 6a providing a chamber 7. Steam is fed through a pipe 8, under control of an adjustable valve 15, into chamber 7 and thence through holes 5a, Fig. 2, in tube 5. Opposite pipe 4 there is a venturi 9 opening into an elongated tube 10 which leads to the top of a combined separator and expansion chamber 11 having an outlet pipe 12 for the steam and an outlet 13 for the food. The size of an orifice in plate 14 provided in tube 10 governs the pressure in and velocity of flow through the tube. Pipe 12 has two branches 17 and 19 leading respectively through valve 18 to the atmosphere and through valve 20 to a condenser and vacuum producing means. The latter arrangement is used when processing food at subatmospheric pressures.
Patent GB-310967-A (GB)
Title: Improvements in or relating to illuminating systems for optical-projection apparatusor searchlights
IPC: G03B21/20
Filed: 1929-04-30
Abstract: 310,967. Planer, P., and Geyling, R. May 4, 1928, [Convention date]. Optical-projection apparatus. - Two or more light sources and optical devices are arranged to produce convergent beams having small and substantially equal apices close together, and plane reflectors are arranged at the apices in such manner that the reflected divergent beams have substantially parallel axes disposed close together; the system may be used in optical-projection apparatus or in searchlights. As shown in Fig. 1, lamps 1 having reflectors 2 produce beams which are reflected by plane mirrors 5 to a condenser 6. The lamps may be arranged to form two rings respectively containing six and twelve lamps, and the reflectors 2 may be replaced by condensers. The mirrors 5, Fig. 3, may be carried by a common case 10, and cooling water or air may be passed into and out of the case by pipes 11, 12.
Patent GB-601991-A (GB)
Title: Improvements in gas discharge electric lighting systems and transformers therefor
IPC: H05B41/232
Filed: 1945-05-29
Abstract: 601,991. Supply systems for space discharge apparatus ; transformers. SOLAR MANUFACTURING CORPORATION. May 29, 1945, No. 13480. Convention date, June 2, 1944. [Classes 38 (ii) and 38 (iv)] A supply system for one or more gas-discharge devices each of which has at least one cathode which is preheated for starting the device, comprises a shell type transformer having a rectangular core 10, Fig. 1, and a central transverse laminated leg 11 carrying a primary winding 12, secondary windings 13 and 14, connected in series, and a heater secondary winding 19, which is positioned between the pair of magnetic shunt polls 17, 18. A similar pair of poles 15, 16 extend from the core 10 towards the leg 11 between windings 12 and 13. Fluorescent lamps XL, XC have their heater cathodes 28, 27 connected in series with winding 19 and to a point in the series connection 29 between windings 13 and 14. The lamp anodes 25 and 22 are connected respectively to the other ends of windings 14 and 13 and a condenser 23 is included in the circuit of winding 13 to prevent " flicker." Energization of winding 12 causes heating current for cathodes 27 and 28 to flow in winding 19 until the main discharge in the lamps starts whereupon an opposing magnetic flux generated by current through windings 13 and 14 is effective to reduce the voltage across the winding 19 to a low value to cause only negligible power to be absorbed in the heater circuit during normal running of the lamps. The modified arrangement of Fig. 2 comprises a parallel connection of the heater cathodes in continuation with a different shunt pole construction. In the arrangement of Fig. 3, the heating circuit comprises three heating secondaries 30, 31, 32 adapted to supply heating current to each of the two cathodes of lamps XL and XC. In a similar arrangement the transformer connections are such as to provide an anto transformer type of system for the two lamps XL and XC. In both the latter arrangements the shunt poles 17 and 18 have modified polepieces to ensure proper flux distribution between coils 30, 31 and 32. In all cases, the heater secondaries are preferable wound with iron wire.
Patent GB-572171-A (GB)
Title: Improvements in or relating to processes for the production of organic fertilizers and apparatus therefor
IPC: C05F7/00
Filed: 1943-08-19
Abstract: 572,171. Fertilizers. HOLFORD PROCESSES. Ltd., and HOLFORD, H. J. Aug. 19, 1943, No. 13489. [Class 111] An organic fertilizer is obtained by mixing an organic fibrous or semi-fibrous material with a bacteria-containing liquor, subjecting the mixture to aerobic treatment in an aerator, such as a mixing mill, whereby the material is mechanically agitated whilst being brought into intimate contact with air, subjecting the fermenting mass to pasteurisation by passing heated air through it and simultaneously removing some moisture from it, and finally, subjecting the pasteurised mass to mechanical pressure to remove only a part of its water content. Suitable fibrous starting materials are granulated peat, disentegrated straw, sawdust, seaweed and/or river-weed. The bacteria-containing liquid may be sewage sludge, preferably of the lagoon or activated type. The pasteurising treatment may be effected at a temperature of about 160‹F. in a rotary screen or a mixing mill. Inorganic fertilizing salts such as ammonium sulphate, sodium nitrate, phosphates, or potash salts, gaseous ammonia, or lime may be introduced into the mixture prior to its pasteurisation. The mixture may also have incorporated in it a moisture-absorbing medium such as sawdust or dry town refuse. Specifications 488,858 and 500,548 are referred to.