baber/WOPTO huggingface dataset:
Patent GB-710733-A (GB)
Title: Mechanism and method for perforating and severing metal foil
IPC: B21D31/02
Filed: 1952-02-18
Abstract: 710,733. Electric condensers. DEHN, S. G. (Fast & Co., J. E.). Feb. 18, 1952, No. 4285/52. Class 37. [Also in Group VIII] A machine for winding paper and metal foil strips on to a mandrel to form an electrostatic condenser comprises means for severing the metal foil strips prior to the cutting of the paper strips so that the latter overlap the ends of the metal foil strips. As shown in Fig. 1 two strips 30<SP>1</SP>, 31<SP>1</SP> of metal foil are led from rolls 30, 31 over guide rollers and between rollers 38, 39 to a driven mandrel 106, 107; the paper strips are similarly led to the mandrel from rolls 26 ...29. When sufficient material has been wound on the mandrel, the paper strips are cut by a knife 50, the metal foil strips having previously been perforated and severed. Each of the strips 30<SP>1</SP>, 31<SP>1</SP>  is first perforated where severance is desired along a transverse line of closely-spaced roles by a knife 61 (see Group VIII), having a serrated edge and co-operating with a rubber-covered guide roller 33. Each knife is actuated by an electro-magnet which is energized by the closure of a switch by a cam on a driven shaft 20. When the perforated portions of the strips have travelled a sufficient distance, brakes are automatically and momentarily applied to drums on the rolls 30, 31 so that the continued pull upon the foil by the mandrel severs the strips along the perforations. The mandrel 106, 107 is of two-part form and movable vertically, being controlled by cams on the shaft 20, whereby it is first moved upwardly as a whole into a position in which the two parts 106, 107 are moved relatively to grip the depending strips of paper and foil and then lowered while it is rotated for the winding operation. When winding of one condenser is nearly complete, the metal foil strips are perforated and severed as described above, the brakes remaining active on the rolls 30, 3 after the actual severance of the paper strips for a period sufficient to delay the feed of the foil relative to that of the paper strips. The knife 50 is then actuated to cut the paper strips midway between the ends of the foil strips.
Patent GB-163122-A (GB)
Title: Combined seat and table or desk
IPC: A47B83/02
Filed: 1920-02-12
Abstract: 163,122. Gerrish, B. S. A. Feb. 12, 1920. Desks and tables combined with and convertible into seats.-The upper part m of a seat back is hinged so that it can be turned down to form a desk or table top, and it is supported in an inclined or horizontal position by hinged struts i connected by a.cross-bar sliding in slots k. Spring catch members o, q are provided to hold the part m upright when used as a back-rest.
Patent GB-841694-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: G03B15/00
Filed: 1957-02-08
Abstract: 841,694. Colour television tubes. ZENITH RADIO CORPORATION. Feb. 8, 1957 [Feb. 9, 1956], No. 4376/57. Class 39(1). A colour television tube is provided with an apertured mask 20 having a support comprising a frame member 28 encompassing the path of the electron beam and having a mask supporting surface substantially parallel to the median normal to the screen 12 and conforming in configuration to the cross-section of the envelope 14 at its position, the edge of the surface 28 nearer the screen being equidistant therefrom. Preferably the frame member is of L-section, 28, 30, as shown. The mask 20 may have a stress-relieving corrugation 36 and has a peripheral flange 34 of uniform width spot or continuously welded to the surface 28. The forward edge of the surface 28 comforms e.g. to the intersection of a rectangular tube and a spherical screen so that the mask may also be spherical and concentric with the screen.
Patent GB-639777-A (GB)
Title: Improvements in or relating to compositions containing vinyl chloride and vinylidenechloride polymers and copolymers
IPC: C08L27/04
Filed: 1947-02-14
Abstract: Polymers and copolymers of vinyl and vinylidene chlorides, which may be after-chlorinated, are plasticized with minor propotions of oily copolymers made from 50 to 90 per cent of a conjugated diolefin containing 4 to 6 carbon atoms per molecule, e.g. butadiene-1,3, isoprene, piperylene, dimethyl butadiene and methyl pentadiene, and 50 to 10 per cent of acrylonitrile or methacrylonitrile.  Specified vinyl and vinylidene chloride copolymers are those with vinyl acetate, acrylic and methacrylic acid esters, fumaric and maleic acid esters or maleic anhydride. The oily diolefin/nitrile copolymers may be made in aqueous emulsion at 10 DEG  to 35 DEG  C. in the presence of modifying agents, e.g. aliphatic primary, secondary or tertiary mercaptans having from 6 to 16 carbon atoms, such as octyl mercaptan or those derived from the dimer, trimer or tetramer of isobutylene or an p  alkyl xanthogen polysulphide, emulsifiers such as soaps of linseed or soybean oil fatty acids or tallow acids, promoters such as amines, inorganic cyanides or alkali ferro- or ferri-cyanides and catalysts such as potassium persulphate.  Other plasticizers, e.g. phthalates, sebacates, tricresyl phosphate, dyes, pigments, fillers, e.g. carbon black, aluminium powder, mica and whiting, natural and synthetic rubber and other resins may be added to the compositions which may be used for making oil-resisting hose and for coating and impregnating paper, cloth and wood.  The compositions may be vulcanized.
Patent GB-1278982-A (GB)
Title: Catalyst compositions and their use in reforming processes
IPC: D02G1/02
Filed: 1969-05-29
Abstract: 1278982 Reforming catalysts SOC CHIMIQUE DE LA GRANDE PAROISSE AZOTE ET PRODUITS CHIMIQUES 29 May 1969 [30 May 1968 14 April 1969] 4515/72 Divided out of 1278981 Heading B1E [Also in Division C5] A steam reforming catalyst comprises a diffused solution of 50 to 70% MgO, up to 20% Al 2 O 3 , the catalyst having a surface area of 0.02 to 1m<SP>2</SP>/gm. Additionally the catalyst may contain CuO, Fe 2 O 3 , FeO, CoO, TiO 2 , CaO, BaO, SiO 2 , Cr 2 O 3  and/or ZrO 2 . Examples describe the preparation of (1) a catalyst containing MgO, Al 2 O 3  and CaO together with minor proportions of SiO 2 , Fe 2 O 3 , ZrO 2 , K 2 O, Cr 2 O 3  and Fe 3 O 4 ; and (2) a catalyst containing the same basic trio together with minor proportions of SiO 2 , Fe 2 O 3 , ZrO 2 , CrO 3  and CuO.
Patent GB-608011-A (GB)
Title: Improvements in or relating to breeches for automatic firearms
IPC: F41A3/40
Filed: 1946-02-14
Abstract: 608,011. Automatic firearms. BREVETS AERO-MECANIQUES SOC. ANON. Feb. 14, 1946, No. 4603. Convention date, July 14, 1945. [Class 92 (ii)] Relates to automatic firearms of the kind in which the breech-block 11 is locked in the closed position by a device 50 and in which longitudinally displaceable sliders 21, located between the breech-block and the breech casing 12, control the unlocking after a shot has been fired. According to the invention, rocking of the breech-block at the moment of firing is prevented by providing thereon and on the breech casing surfaces 32, 29, which bear against each other when the breech is closed. By such an arrangement the sliders are not subjected to any jamming action between the breech-block and breech casing. The Specification as open to inspection under Sect. 91 describes also a construction in which the sliders are guided between upper and lower surfaces of the breech casing. In another construction the breech-block is bored for the passage of the sliders which are circular in cross-section. This subject-matter does not appear in the Specification as accepted.
Patent GB-851943-A (GB)
Title: Improvements in or relating to hatchway covers
Inventor: SENIOR WILLIAM JAMES
IPC: B63B19/197
Filed: 1958-02-12
Abstract: 851,943. Door operating appliances. AUTOMOTIVE PRODUCTS CO. Ltd., and MACGREGOR & CO. (NAVAL ARCHITECTS) Ltd. Feb. 5, 1959 [Feb. 12, 1958], No. 4646/58. Class 65(1) A hatchway cover, comprising one or more pairs of hinged-together panels 10, 11 which can be moved between a hatch-closing position, in which they lie in a common plane, and an open position, in which they are substantially vertical with their undersides facing each other, is operated by one or more groups of two extensible and contractable actuators 21, 22, one actuator of each group being pivotally connected at one end to one of the panels and the other actuator of the group being pivotally connected at one end to the other panel, and the other ends of the actuators being pivotally connected to a part 18 which is itself pivotally connected to one of the panels to turn about an axis 17 parallel to, but offset from, the hinge axis 15 between the panels. The part 18, which is T-shaped, is not symmetrical about the stem of the T, the ends of the actuators which are pivoted to the part being equidistant from the hinge axis 15 when the cover is closed. The actuators may be fluid pressure rams, as shown, or screw jacks operated by electric motors, and are preferably located within the thickness of the panels.
Patent GB-669718-A (GB)
Title: Improvements in launching devices for self-propelled missiles, in particular jet propelled missiles
IPC: F41F3/04
Filed: 1950-02-23
Abstract: 669,718. Rocket-launching apparatus. SOC. D'EXPLOITATION DES MATERIALS HISPANO-SUIZA. Feb. 23, 1950. [March 5, 1949] No. 4701/50. Classes 9 (ii), 92 (i) and 92 (ii). A rocket-launching apparatus has means for instantaneously releasing the supports holding the rocket in launching position and igniting the rocket charge with suitable delay after said release to avoid disturbance of aim. In the form shown, the rocket projectile 1, Fig. 1, is supported in roller bearings 6, 7 from arms 4, 5 hinged to the launching frame 2 and connected by adjustable linkage 12, 13 to a spring-pressed plunger 15, which on release of returning pin 19, moves the linkage to the dotted line position to permit the rocket to fall downwardly through a distance GG<SP>1</SP> before the rocket propelling charge is ignited. Ignition is effected by the electric means shown in Fig. 4 arranged in the hollow support 27 which receives an ignition rod 28 connected through spring 29, carbon brush 30 and rod 31 to the ignition coil 26 for the charge 25. The rod 28 is in an electric circuit including release switch 33 and solenoid 20 for releasing the pin 19. Delay in ignition is provided by a slow burning sheath 26a. For stabilization, the rocket is rotated in the bearings 6, 7 by gearing driven from a motor 8. The launching frame 2 can be elevated on runners 3 on a support C.
Patent GB-1522464-A (GB)
Title: Refrigeration system
IPC: F25B5/00
Filed: 1977-02-04
Abstract: 1522464 Refrigerating DOLE REFRIGER. ATING CO 4 Feb 1977 [17 June 1976] 04725/77 Heading F4H A eutectic plate refrigeration system for a vehicle has the refrigerant conduit 32 of a compression refrigeration system leading to coling coils (not shown) within the plate and at least one defrost coil 46 externally mounted on the plate which is connected by an outlet conduit 54 to the hot gas line between the compressor 24 and condenser 28, flow through the defrost coil being controlled by a valve 56 in the coil inlet conduit 52 and the compressor side of the line and a second valve in the hot gas line between the conduit 52 and discharge 42 from the coil. The valves may be controlled by a thermostat 60, a plurality of defrost coils may be provided and the refrigeration and defrosting cycles may operate simultaneously or sequentially. A eutectic plate assembly may be formed by two spaced plates 12, 14 having sheets of corrugated aluminium 16, 18, 20, 22, positioned thereover.
Patent GB-730419-A (GB)
Title: Apparatus for cutting or slicing vegetables and the like
IPC: B26D1/29
Filed: 1953-02-20
Abstract: 730,419. Slicing potato crisps &c. GAUDION. W. R., and HEATON, M. May 19, 1954 [Feb. 20, 1953], No. 4755/53.. Class 5 (1). A potato is sliced with corrugations on each side of the slice at an angle to one another whereby the heights of the corrugations intersect to leave a network of holes by a pair of diametrical, cutters 15 in a rotated disc 11 also rotated planet-wise around another superposed rotated disc 4 through a central funnel 16 of which is fed a potato to the cutters. The planetwise motion is arranged to cut corrugations at right angles to the previous cut. A motor pulley (2 Fig. 1 not shown) drives a belt to rotate the upper disc 4 on the axis of which a sprocket 6 and endless chain 10 rotates a sprocket 9 on the cutter disc 11 which is thereby rotated on its own axis and also planetwise. Each potato is inserted through a hole 18 in tube 16 after the spring pressed feed plunger 17 has been retracted by hand. The cutters 15 adjustably protrude upwards in slots in the disc 11, the slices passing down through the slots 15. The disc 4 is provided with a counterweight the momentum which balances the cutting action.
Patent GB-885838-A (GB)
Title: Improvements in leather manufacture
IPC: C14C9/00
Filed: 1958-02-14
Abstract: Chromium complexes of fluorocarbon monocarboxylic acids, such as C7F15COOH and C8F17SO2N(C2H5)CH2COOH, are prepared by reacting the acid with chromyl chloride in isopropyl alcohol, employing a chromyl chloride to acid mole ratio of about 2 : 1 to 20 : 1.  The product may be used in the manufacture of leather (see Group VIII). Reference has been directed by the Comptroller to Specification 802,962.
Patent GB-935473-A (GB)
Title: Electrical control device
IPC: H01G9/00
Filed: 1960-02-11
Abstract: 935,473. Electrolytic amplifiers. OVITRON CORPORATION. Feb. 11, 1960 [Feb. 15, 1959], No. 4941/60. Class 37. [Also in Group XXXIX] An electrolytic amplifier or relay comprises a pair of electrodes 12, 13 covered with film 16, 17 of metallic oxides and an unfilmed electrode 18, all three electrodes being positioned in an electrolyte 23 containing metallic ions. The filmed electrodes act as rectifiers in opposition and offer a high impedance to an alternating voltage across them. The impedance is reduced when the unfilmed electrode 18 is made positive with respect to the other electrodes 12, 13 giving a power gain of the order of 1000 to 1. In a preferred embodiment the electrodes 12, 13 are of tantalum filmed with tantalum oxide. The electrode 18 is of platinum. The electrolyte is a saturated solution of a zinc salt such as chloride or zinc sulphate in diluted hydrochloric, sulphuric, phosphoric or acetic acid. Control circuits.-In Fig. 2, the current supplied from a transformer 30 to a load 31 is controlled by an electrolytic device. The electrodes 12, 13 are connected to rectifiers 26, 27 in a full wave rectifier circuit, the output of which feeds the control electrode 18 through a variable resistor 29. In Fig. 3, the control electrode 18 is fed by a battery through a reversing switch 37, the control circuit being isolated from the alternating current circuit by chokes 33, 34.
Patent GB-814691-A (GB)
Title: Improvements in or relating to folding furniture
Inventor: GROOM LESLIE
IPC: D06F81/04
Filed: 1957-02-13
Abstract: 814,691. Folding furniture underframes. ANDERSAY ENGINEERING CO. Ltd. Feb. 3, 1958 [Feb. 13, 1957], No. 4946/57. Class 52(3) An ironing table has legs 2, 3 each pair being of U-form, pivotally connected together at 7, the legs 2 being hinged to the top 1 and legs 3 being connected by a cross-bar 8 engageable in one of a number of retaining members 9, its range of movement being defined by a retaining strip of webbing 11 secured between a member 10 and bracket 12. The webbing may be replaced by a plastic coated wire or expanding coiled wire.
Patent GB-216198-A (GB)
Title: Improved process for the manufacture of steel and the fixation of nitrogen
IPC: C21C5/46
Filed: 1923-02-20
Abstract: In a process for the manufacture of steel and the fixation of nitrogen, molten iron in a converter is subjected to an air blast to remove most or all of the silicon present and then the air blast is cut off and nitrogen blown in thus removing the carbon in the form of cyanogen compounds, such as cyanogen or hydrocyanic acid, which pass off with the gases from the converter and are removed therefrom by treating with steam to form ammonia compounds or converting into nitric acid.  To assist the reaction, a basic element, such as an alkali metal in vapour form, or hydrogen is introduced with the nitrogen, the sulphur and phosphorus present as impurities in the iron being also removed. Instead of nitrogen producer gas or any gas containing nitrogen and hydrogen as its main constituents may be used but in this case the alkali metal is not used.  Specifications 11797/14 and 2286/15 are referred to.
Patent GB-275109-A (GB)
Title: Improvements in devices for retaining garments at the waist line
IPC: A41F9/02
Filed: 1927-02-22
Abstract: 275,109. Bennett, W. Feb. 22, 1927. Belts; skirts; waistbands.-A detachable belt forming a combined trouser support, shirt holder, and body belt and intended to be worn under the trousers, to which it is buttoned, comprises a strip of textile or like material F with a number of buttonholes for engagement by buttons f on the inside of the trousers. Some of the buttonholes are in the form of elongated slots, as shown, to enable the buttons to pass freely along said slots. Elastic gussets or sections D may be added.
Patent GB-112215-A (GB)
Title: New or Improved Means for and Method of Preserving Eggs.
IPC: A23B5/00
Filed: 1917-04-10
Abstract: 112,215. Place & Sons, J., and Place, W. H. April 10, 1917. Compound jars. - Shallow circular or oval stoneware jars c for preserving eggs are each provided with a socket a at the top so that they can be piled cne above the other as filled, and a single lid b is provided, which is employed firstly to cover the first jar and after. wards the topmost jar at any time in the pile.
Patent GB-969222-A (GB)
Title: Improvements in load-supporting conveyors
IPC: B61B10/02
Filed: 1961-02-10
Abstract: 969,222. Conveyers. TISSMETAL-LIONEL-DUPONT, TESTE & CIE. Feb. 10, 1961 [April 29, 1960], No. 5064/61. Heading B7L. In a conveyer in which a chain C drives trolleys along underlying tracks V, v provided with a switch B, the chain C is guided, in an operative trolley driving position, by pulleys 24, 25 from the main track V along the secondary track v from the switch B and then, in the inoperative position, from the secondary track v back to the main track V at the switch B where it is returned to the driving position along the main track V. The driving dogs P are " T "- shaped, the head being of sufficient width to ensure a continuous trolley drive along the main track V at the switch B. The pulleys 24, 25 may be replaced by guides.
Patent GB-896674-A (GB)
Title: Improved snap hook
IPC: B66C1/36
Filed: 1960-02-12
Abstract: 896,674. Hooks AIRCRAFT MATERIALS Ltd., and GOULD, G. H. Jan. 19, 1961 [Feb. 12, 1960], No. 5092 /60. Class 89(2). A snap-hook comprises a body 10 having a pivot 13 for a gate biased by a spring 17 to close the hook, the gate having a limb 14a for closing a zone 15 of the hook and a limb 14b for closing a zone 16, and the limbs being displaced in sequence by introducing into zone 16 a ring &c. 22 which can be withdrawn only' after two further and substantially full displacements of the gate. The first of these allows the ring to pass from zone 16, Fig. 3 (not shown), to the space between the limbs 14a, 14b from which it may pass above limbs 14a only when the gate is again closed. From this position, the ring may be withdrawn when the gate is opened for the second time. A recess 18 in the top limb 10b of the hook receives the limb 14a, and one formed by sidestiffening plates and an abutment 19 receives limb 14b when the hook is closed. A lateral projection (not shown) on the gate may transmit load from the gate to the top limb 10b.
Patent GB-459752-A (GB)
Title: Improvements in or relating to mullers
IPC: B02C15/14
Filed: 1936-02-20
Abstract: 459,752. Edge-runner mills. CHRISTENSEN, A. C., 9205, S. Marshfield Avenue, Chicago, U.S.A. Feb. 20, 1936, No. 5195. Convention date, Jan. 25. [Class 59] A muller comprising a pan and a gear case on the bottom of the pan is provided with an upwardly extending removable turret mounted within the pan, and having an outwardly projecting flange on the lower part forming a cover for the gear case, the muller cross-head being mounted on the upper part of the turret. As shown in Fig. 2, a fixed pan 2 is provided with a removable central turret 10, which forms the top of a gear case 17 integral with the pan. A sleeve 24 in the gear case houses a drive shaft 22 provided with a pinion 21 geared to a crown wheel 20 on a vertical shaft 13. A cross-head 35 on the shaft 13 carries horizontal spindles 38 with cranked ends 40 for supporting the mullers 46, the height of the muller above the perforated bedplate 8 being adjusted by screws 51 in the head bearing underneath lugs 48 on the cranks 40. Symmetrically arranged scrapers 54, 55, Fig. 1, are supported by the cross-head and the pan is enclosed by a casing 4 provided with a lid 65 vent pipe 63, and access doors 62. The material is discharged through a door 66 in the pan operated by an air cylinder 70.
Patent GB-981929-A (GB)
Title: Mixing apparatus
Inventor: WOODS GEORGE
IPC: B01F29/86
Filed: 1963-02-08
Abstract: 981,929. Mixing appliances. IMPERIAL CHEMICAL INDUSTRIES Ltd. Jan. 21, 1964 [Feb. 8, 1963], No. 5267/63. Heading B1C. A batch mixer for polyurethane foams comprises a rotatable mixing chamber B having a plurality of inlets F for the polyurethane ingredients and for compressed air, and a closable outlet I fed from the internal periphery of the chamber. As shown, the chamber comprises two frusto-cones joined at their bases so that the greatest diameter is in the lower half of the chamber, the outlet port I being closable by a solid conical valve H raised and lowered by the pneumatic cylinder K and spindle J. The mixture is ejected by air blast. Stirrers G may be held stationary or counter-rotated; the apparatus may also be operated by rotating the stirrers while holding the chamber B stationary.
Patent GB-339881-A (GB)
Title: Process and apparatus for the production of anodes for the cells of electric dry batteries
IPC: H01M4/10
Filed: 1930-02-17
Abstract: 339,881. Schmidt, W. March 21, 1929, [Convention date]. Moulding depolarizing elements for dry batteries.-Dry battery dollies are made by first dividing the depolarizer by mechanical means into portions corresponding to the size of the dollies, pressing the portions into cylindrical form and forming recesses in the ends of the cylinders of such a depth that a thin partition of depolarizing material remains between the inner ends of the recesses. Carbon rods are then forced through the dollies, breaking through the partitions. A final pressure on each end of the dolly completes the process. Fig. 1 shows the device for measuring out the depolarizer which is contained in a receptacle a having an opening a<1> in the bottom communicating with apertures b<1> in a rotary disc b. The latter rotates above a fixed plate c having an opening c<1> through which the depolarizer in the apertures b<1> falls into a mould h, Fig. 4, where it is pressed into cylindrical form. A ram ejects the cylinder of depolarizer into one of a series of openings in a rotary disc i, Fig. 5, on each side of which is a punch n. The latter make holes in the cylinder which do not quite meet. As the disc i rotates, other devices insert carbon rods y in the cylinders and compress the ends thereof and finally eject the finished dollies.