baber/WOPTO huggingface dataset:
Patent GB-954480-A (GB)
Title: Improved recording system
Inventor: GABOR DENNIS
IPC: G11B5/17
Filed: 1960-04-21
Abstract: 954,480. Magnetic recording heads. MINNESOTA MINING & MANUFACTURING CO. April 21,1960, No. 14103/60. Heading G5R. A magnetic tape recording head arranged to produce a uniform intensity of magnetisation throughout the thickness of magnetic layer 13, comprises a conventional head with a gap member between polepieces 16,17 and an associated member, spaced opposite the gap on the other side of the tape and comprising three fine insulated wires 21-23, mounted in a block of magnetic material 19 and so connected to a cooling plate 25 that symmetrical currents of half the intensity of that flowing in the wire 22 flow in the opposite direction down the wires 21, 23. When the heads are simultaneously fed with the same signal current, the component field distributions are as in Figs. 4B, 4C, the resultant field being uniformly along the tape axis over the greater part of the gap, the usual vertical component at the ends of the gap being cancelled out. Typically, the wires 21-23 are 0. 0006 inch dia and 0. 08 inch long, 22 carrying 10 Amps. The arrangement allows recording of high frequencies at low tape speeds without danger of loss of the recording due to tape wear. In another embodiment, (Fig. 5 not shown), the first recording may be made on a double-coated tape, the unwanted recording on the lower coating being erased by a normal erase head whose field does not penetrate in sufficient strength to affect the wanted recording in the upper coating.
Patent GB-793551-A (GB)
Title: Improvements relating to mixed ferromagnetic ferrites
IPC: C04B35/26
Filed: 1955-05-16
Abstract: 793,551. Magnetic compositions. GENERAL ELECTRIC CO. May 16, 1955 [June 30, 1954] No. 14109/55. Class 38 (2). A ferromagnetic ferrite composition having a resistivity of at least 20,000 megohm-cm., and value of ÁQ at 0.6 Mc/sec. of at least 21009, is made by heating in air or other oxidizing atmosphere at 1150 to 1250 C., 40-60 mol. per cent iron oxide, 20-35 mol. per cent zinc oxide, 0.5-40 mol. per cent manganese oxide, the balance being nickel oxide. Finely divided oxides are ground together in water, dried, powdered with or without temporary binder, moulded and fired at 1150-1250 C., preferably about 1200 C. Figures of magnetic properties are given for a range of materials comprisng 48 mol. per cent iron oxide, 30 mol. per cent zinc oxide, varying quantities of manganese oxide, balance nickel oxide heated in air or nitrogen at 1200 or 1350 C. The best results are obtained when compositions containing 1.0 or 2.0 mol. per cent of manganese oxide are heated in air at 1200 C.
Patent GB-293535-A (GB)
Title: Improvements in or relating to the manufacture of rubber tubing
IPC: C08J5/02
Filed: 1927-05-26
Abstract: 293,535. Dunlop Rubber Co., Ltd., and Hyde, A. W. T. May 26, 1927. Flexible tubes.-Rubber tubing of narrow bore is formed from an aqueous dispersion of rubber by deposition on a, fusible core or mandrel which is removed by fusing. For example, a wire of Wood's alloy, containing bismuth cadmium lead and tin is dipped in a dispersion of rubber or rubber compound which may contain vulcanizing ingredients, the deposition taking place electrolytically or by dipping. The core is removed e.g. by submersion in a hot bath, for which purpose the wire may be wound on a drum which is immersed so that the core flows out or is expressed out. The drum may also be rotated. Vulcanization may be effected under a suitable liquid or under powdered chalk or in direct contact with gases or steam, and accelerators may also be used. Cold curing with sulphur monochloride, or by sulphur dioxide and hydrogen sulphide may also be employed.
Patent GB-495837-A (GB)
Title: Improvements in or relating to insulated electrical conductors
IPC: H01B13/20
Filed: 1937-05-21
Abstract: In the manufacture of an insulated conductor, more particularly for use as an inner conductor of an air-space insulated cable, in which the conductor is provided at intervals along its length with insulating spacers each comprising two or more radial fins and the fins of successive spacers being progressively angularly displaced as described in Specification 477,996, so that they appear along the conductor in a continuous helical arrangement, the spacers are moulded on the conductor by a machine which applies in one moulding operation one or more complete series of angularly displaced spacers. The spacers are applied by a press having a number of axially spaced and angularly displaced dies and, preferably, in co-operation with the press means is provided whereby after the dies open the conductor is advanced through the press by a length corresponding to the product of the interval between the spacers and the number thereof simultaneously applied.  The take-up drum is preferably driven synchronously with the conductor advancing mechanism. Specification 477,697 also is referred to.
Patent GB-727107-A (GB)
Title: Improvements in or relating to machines for processing tea leaf and like commodities
IPC: A23F3/12
Filed: 1953-05-20
Abstract: 727,107. Disc mills. ANDREWS, H. C. May 20, 1953 [March 10, 1953], No. 14163/53. Class 59. [Also in Group VI] A machine for processing tea leaf and like commodities comprises two relatively-rotatable discs 1, 2, Figs. 1 and 4, positioned face to face and having serrations, battens or the like 9a on their opposed faces, and means 11 for feeding the leaf into a localized area which extends over an arc of less than 90 degrees of the periphery of that one of the two discs which is stationary or rotates at a slower speed, the leaf being fed from the periphery towards the centres of the discs for processing within a somewhat narrow band extending from the point of feed and following the general direction of the predominating component of the relative rotation between the discs. One of the discs may be stationary and the other rotatable, or both discs may be rotated in opposite directions but at different speeds. The discs may be of equal or unequal sizes, arranged coaxially or on offset centres, and mounted so that either or both may yield axially should any injurious matter pass between the discs. In the machine shown in Figs. 1 and 4, a large disc 1 and a smaller offset disc 2, which rotates oppositely to and more slowly than the disc 1, are carried by separate shafts la, 2a rotated by belt-and-pulley drives; the shaft 1a is adjustable axially by a handle 3 to vary the distance between the discs and is also mounted to yield against a spring 4 to provide a safety factor in the machine. The feed occurs roughly between the lines MN-M<SP>1</SP>N<SP>1</SP>, Fig. 4, and is provided by a hopper 11 supplied by a conveyer 12 and extending down to the chamfered edge 10 of the disc 2. After treatment between the two discs, the leaf passes between the disc 1 and the serrated or battened surface of a yieldably-mounted plate 13 and is discharged therefrom at the point 14. The serrations or battens on the discs 1, 2 are grouped in sectors and are so shaped and arranged that those on the faster disc 1 promote the feed of the leaf into the processing area, and in this area co-operate with those on the disc 2 so that in its curved path between the discs the leaf is first subjected to a combined stretching, tearing and crushing action, then to a rolling action and finally to a further stretching, tearing and crushing. During the passage between the disc 1 and plate 13, the serrations or battens effect a rolling action upon the leaf. The discs may be of wood or metal with the battens formed separately therefrom or integrally. In a modification, each disc is built up of a number of concentric rings, each provided with the appropriately-disposed battens in different segments; by relatively rotating the rings, many different kinds of processing surface can be obtained. If desired, the discs may be disposed horizontally, instead of vertically as shown in Figs. 1 and 4. Indian Specification 23,780 is referred to.
Patent GB-1057937-A (GB)
Title: Advertising device
IPC: G09F13/00
Filed: 1964-04-06
Abstract: 1,057,937. Advertising device. A. BOCKMANN. April 6, 1964 [April 18, 1963], No. 14169/64. Heading G5C. A display member 16 of resilient polystyrene sheet is curved back on itself and secured by holding lugs 20 at its vertical edges to a rigid rectangular support member 10. The member 16 may be curved off at the corners (Fig. 1, 4, not shown), and may have holes co-operating with lugs 20, which are riveted to support 10 (Figs. 6, 7, not shown). Member 16 may in flat form be 50-65% wider than the distance between lugs 20. Member 16 may bear text and illustrations in the form of a coloured transparency for rear illumination by a lamp 12 clipped to support 10 (Fig. 2, not shown), support 10 behind the lamp being covered with reflecting foil. Support 10 may have a hole 11 for suspension, and may be of small height compared with member 16. Fig. 5 (not shown) illustrates a support having a central aperture, containing a lamp, and two display members on opposite sides. The spaces above and below the lamp may be closed or left open as shown.
Patent GB-127828-A (GB)
Title: Improvements in or relating to Devices for Feeding Tablets of Chocolate and similar Articles to the Work Tables of Wrapping Machines.
Inventor: LEUMANN RICHARD
IPC: B65B35/02
Filed: 1919-06-04
Abstract: 127,828. Leumann, R. June 7, 1918, [Convention date]. Fceding chocolate tablets &c.- Relates to means for feeding tablets of chocolate &c. to the work-tables of wrapping - machines. The tablets are placed in a container composed of a pair of trough-section uprights 1, in which they are supported by a pair of jaws 10. The jaws are carried by pairs cf bell-crank levers 12, 14, the upper limbs of which are interconnected by a pin and slot, and one of the levers is formed with an arm 16 that is coupled by a rod to a lever 27 engaging, by means of a roller 28, with a rotating cam. A vertically-moving carrier 4, mounted on a jointed parallelogram are actuated by the contact of a roller 9 with a cam, first lifts the pile of tablets off the jaws 10; the jaws are then retracted by the action of their cam, but are returned by the action of the spring 25 to support the rest of the pile when, upon the descent of the carrier, the lowermost tablet is clear of the container; the continued descent of the carrier deposits the tablet upon the surface of the table 24.
Patent GB-583000-A (GB)
Title: Improvements in or relating to heels for boots and shoes
IPC: A43B13/34
Filed: 1945-07-21
Abstract: 583,000. Attaching heels to boots &c. TURNER, G. J., and HAIGH, N. C. July 21, 1945, No. 14192/44. [Classes 17 (ii) and 17(iii)] Heels B are provided with' vertical metal inserts D the upper ends of which are provided with tapped holes to receive screws a for attachment of the heel B to the sole A and the lower ends of which are formed with heads d which are accommodated in holes in the tread lift C. By this arrangement the lift C may be readily renewed when worn, and the heels B may be interchanged with others different, for example, in colour.
Patent GB-481171-A (GB)
Title: Improvements in or relating to electrical systems and method of controlling the transfer of electrical energy
IPC: H02M1/04
Filed: 1936-05-19
Abstract: 481,171. Valve circuits. BUCKLEY RADIO LABORATORY, Inc. May 19, 1936, No. 14206. Void. Convention date, May 20, 1935. [Class 40 (v)] A current of substantially rectangular waveform is obtained by using a gas-filled discharge tube 13, Fig. 1, to the input circuit of which an alternating current from source 15 is applied. The resultant potentials across resistance 55 have the character shown in Fig. 3. Alternatively the input may be derived from an impulse generator, direct current source in series with a key, or a key alone ; the output from valve 11 may be utilized in any manner to operate a relay or for subsequent transmission A push-pull arrangement of valves 13 and 11 may be used, Fig. 2 (not shown). Fig. 10 shows an arrangement in which impulses from source 15 key the gas-filled relay 13 and thence key oscillations from an oscillator 112 in the grid-circuit of valve 125 having a balanced output circuit coupled to an amplifier 137.
Patent GB-914487-A (GB)
Title: Improvements in or relating to rotatable lens pedestals
Inventor: SPOTTISWOODE NIGEL LAWRENCE
IPC: F21V21/00
Filed: 1960-04-22
Abstract: 914,487. Lens mounts. GAS ACCUMULATOR CO. (UNITED KINGDOM) Ltd. March 21, 1961 [April 22, 1960], No. 14207/60. Class 97 (1). [Also in Groups XXXV and XXXVII] A rotatable lens pedestal comprises a rotatable lens table and a concentric stationary lamp platform, the table being coupled to a squirrel-cage rotor associated with two sets of stator windings. Each set of stator windings is sufficient to drive the table so that, if one set fails, the operation of the pedestal will not be affected. The stator carries further windings 26 in which a voltage proportional to rotor speed is induced. When the rotor is at rest, transistors 27, 28 pass substantially no collector current, but transistor 29 passes current to saturate reactor 32. Full mains voltage is applied to stator windings 33 giving maximum torque. When the rotor reaches a predetermined speed, the transistor 29 is cut-off, producing a corresponding drop in the stator current. The speed at which the rotor is stabilized is adjusted by means of resistor 31.
Patent GB-826153-A (GB)
Title: Well drilling derrick for drilling side by side wells
IPC: E21B15/00
Filed: 1956-05-08
Abstract: 826,153. Drilling derricks. MOORE CORPORATION, L. C. May 8, 1956 [Oct. 19, 1955], No. 14280/56. Addition to 826,151. Class 78 (4). A derrick suitable for drilling several wells from one base comprises a mast B, Fig. 4, pivoted at 4 and supported at 13 by a gin pole 8, 9. After drilling a well the mast is held by guys 19 while the gin pole is moved first to the dotted-line position of Fig. 4, the lower end of the member 8 being then moved to 10<SP>1</SP> and the mast pivoted successively about the points 4, 131, using the guy ropes, to a new drilling position. The process may be repeated to drill a line of wells. In a modification, Fig. 7, the mast is pivoted about the point 27 into the dotted-line position, then disconnected from the gin pole and held upright above the point 28<SP>1</SP> by guy ropes while the gin pole is moved. In another modification, Fig. 10, the mast is first pivoted into the dotted-line position, then the gin pole is disconnected from the base 5 and mast and gin pole are together pivoted about the point 32<SP>1</SP>, the gin pole being prevented from collapsing by a spreader 34. In a further modification, Fig. 12, the mast is " walked " along a fixed gin pole, using pivots 42, 43<SP>1</SP> successively for the first advance, then 44, 43<SP>11</SP> for the second. A releasable pivot for the mast comprises a pin 13, Fig. 3, slidably mounted in a sleeve 14 on the mast 2 and held in a collar 15 on the gin pole 8 by a spring 16. A pull on a rope 17 releases the pivot. Alternatively a screw thread may be used to move the pin 13.
Patent GB-733323-A (GB)
Title: Improvements in foot-operated or foot-controlled machines or appliances for office use
Inventor: OSTWALDT ERICH
IPC: B41L45/02
Filed: 1953-05-21
Abstract: 733,323. Actuating Bowden mechanism. ADREMA MASCHINENBAU GES. May 21, 1953, No. 14284/53. Class 136(1). [Also in Group XVI] In a foot-operated or foot-controlled machine or appliance for office use, a pedal mechanism comprises a pedal oscillatable around the axis of a shaft 4 against the action of a spring 15, the pedal being arranged on a hollow shaft rotatable around the shaft 4 on the machine frame 2, the hollow shaft being provided with a lever connected to a flexible cable 12 in the frame 2. The other end of the cable 12 is connected to an operating or control member of the machine. Two hollow shafts 5, 6 are rotatably mounted on the shaft 4 by distance rings 7 rotatable on the shaft 4. Rings 9 are secured to the shafts 5, 6 at their outer ends and are provided with arms 10 to which are connected the cables 12. Foot pedals 11 are secured to the inner end of the shafts 5, 6, each pedal being associated with a helical spring 15.
Patent GB-1181903-A (GB)
Title: Process for Purification of Low-Pressure Polyolefins
IPC: C08F6/02
Filed: 1967-03-29
Abstract: 1,181,903. Purifying olefin polymers. VEBA CHEMIE A.G. 29 March, 1967 [29 March, 1966], No. 14330/67. Heading C3P. Olefin polymers obtained using catalysts comprising titanium compounds and organoaluminium compounds are purified using alcohols, or their mixtures with hydrocarbons, by a process comprising at least two stages with differing operating conditions. Stage 1 is conducted at a temperature up to 80‹ C. for 15 to 60 minutes and at a concentration of alcohol of 0À01 to 0À7 vol. per cent. Stage 2 is conducted at a temperature of 50‹ to 90‹ C. and at a concentration of 2 to 10 vol. per cent for 45 to 120 minutes. In the examples, the alcohol used is n-propanol, the hydrocarbon, which is also used for the polymerization, is hexane, the olefin polymers are polyethylene, polypropylene and ethylenebutene copolymer, and the polymerization catalysts are trichlortitanic acid n-propyl ester/ (C 2 H 5 ) 2 AlCl, TiCl 3 /(C 2 H 3 ) 2 AlCl/AlCl 3  and dichlorotitanic acid n-propyl ester/(C 2 H 5 ) 3 Al 2 Cl 3 .
Patent GB-769178-A (GB)
Title: Improvements in or relating to pressure-fluid vapour generating units
IPC: F22B1/22
Filed: 1955-05-18
Abstract: 769,178. Boiler furnaces. BABCOCK & WILCOX, Ltd. May 18, 1955 [May 20, 1954], No. 14337/55. Class 51 (1). [Also in Group XIII] A pressure-fired water-tube steam boiler which is adapted to utilize a low heating value gaseous fuel, e.g. waste gas from a hydrocarbon cracking process, has a gas-tight furnace 10 defined by cylindrical walls 14, 14A, 14B, a circular refractory floor 16 and a wing baffle 18, the latter projecting from the wall 14A. Between the baffle 18 and the roof 20 of the boiler is a lateral convection gas pass 12. A steam and water drum 22 extends diametrically across the roof 20 and is connected by upright steam generating tube banks 26 to a water drum 24 disposed across bottom of the pass 12. A superheater 25 is located at the inlet to the pass. The furnace 10 is divided by an annular baffle 42 into a combustion zone 54 and an upper radiation zone 56. The combustion zone is surrounded by a windbox 40 and provided with a double row of tangential firing burners 58 supplied with a high heating value fuel oil. A toroidal distributing header 28 receiving water from drum 22 through downcomers 30 is disposed below the combustion chamber, water tubes 38, 32 extending upwardly from the header to line the windbox 40 and combustion chamber 54 respectively. The tubes 38 lining the windbox are bent to form, with refractory material, the baffles 42 and 18 and, together with the chamber lining tubes 32, are connected to an upper header 36 whence riser tubes 45 lead the steam-water mixture generated in the tubes into the drum 22. The tubes lining the combustion chamber are also covered with refractory material. The windbox 40 is divided by vertical baffles 68 into chambers 70, 75. Chambers 70 communicate through their open lower ends with a plenum chamber 62 located below the floor 16 and supplied with combustion air from a duct 60. At their upper ends the chambers each have an outlet port controlled by a damper 78. The chambers 75, which are closed at the bottom ends, open at their upper ends into an annular chamber 40A supplied with the low heating value gas through a pipe 71. The gas enters the combustion chamber through tangentially directed ports 72 and burns with excess air introduced through burners 58, the high temperature gases from the latter maintaining the combustion. Additional air can be introduced admixed with the gas by opening dampers 78. The construction of the gas-tight casing is shown in Fig. 5. Vertically spaced steel buckstay bands 82 encircle the tubes 32, 38 and are welded thereto at 84. Strap-welded casing sheets 86, 96 surround the tubes and bands 82 are supported by the latter without being secured thereto to allow for relative expansion. Thermal insulation 104 supported by a wire mesh 108 secured to studs 110 welded to the sheets 86 is disposed externally of the sheets, the casing being completed by thin external sheets 114 welded to spacer bars 112.
Patent GB-545565-A (GB)
Title: Improvements in or relating to hand-operable powder insufflating devices or appliances
IPC: B05B11/06
Filed: 1941-11-07
Abstract: 545,565. Powder blowers. EVANS SONS LESCHER & WEBB, Ltd., and PEARCE, T. W. Nov. 7, 1941, No. 14342. [Class 18] A device for spraying powder comprises a bottle or other receptacle a for the powder, a cap or closure b therefor, an open-ended tube d firmly associated with the closure and having one or more apertures m registering with one or more apertures l in the closure so that when the bottle is inverted powder enters the tube, and a flexible tube e terminating in a compressible bulb being adapted for connection to one end of the tube d so that by repeated squeezing of the bulb the powder may be discharged from the other end of the tube in the form of a fine spray or mist. A discharge nozzle h may be detachably fitted to the tube by a pin j and, bayonet slot.
Patent GB-378519-A (GB)
Title: Improvements in radio apparatus and method of operating the same
IPC: H03J1/04
Filed: 1931-05-15
Abstract: 378,519. Valve amplifying circuits. SAMPSON, J. E. and SAMPSON, J. C., 3624, Olive Street, St. Louis, Missouri, U.S.A. May 15, 1931, No. 14434. Convention date, June 12, 1930. [Class 40 (v).] A push-pull connection of thermionic valves 5 is provided with frequency response control comprising the series connection of a variable resistance 7 up to one megohm and a fixed condenser 6 of 0À002 microfarads.
Patent GB-611967-A (GB)
Title: Improvements in or relating to thermostatically controlled electric irons
IPC: D06F75/26
Filed: 1946-05-14
Abstract: 611,967. Thermal switches. WILLIAMS, F. R., and DAVIES, P. H. May 14, 1946, No. 14602. Addition to 587,197. [Class 38 (v)] In the appliance disclosed in the parent Specification, one contact 10 of the thermostat is formed or carried on the setting member 11, and the bimetal strip 13 carrying the other contact 12 is mounted near to the heating element 18.
Patent GB-1048365-A (GB)
Title: An exposure meter for a camera
IPC: G03B17/08
Filed: 1965-04-06
Abstract: 1,048,365. Photographic cameras. NIPPON KOGAKU KABUSHIKI KAISHA. April 6, 1965 [April 16, 1964], No.14620/65. Heading G2A. A camera, particularly a single lens reflex camera, has a focussing screen 3 Fig. 1 (not shown) in the path to an eyepiece lens 5, and a photo electric cell 8, Fig. 2 positioned to receive light from the screen 8 through a lens 6 the optical axis X<SP>1</SP> of which is inclined to that X of the eyepiece lens. A field stop 7 is arranged between the cell 8 and lens 6 at the image plane of the screen 3 Fig. 1 (not shown) such that the cell 8 receives light only from a restricted area of the screen.