baber/WOPTO huggingface dataset:
Patent GB-1472721-A (GB)
Title: Method of washing continuously moving freshly formed rayon yarn
IPC: D01D10/04
Filed: 1975-06-05
Abstract: 1472721 Washing rayon yarn E M MOGILEVSKY 5 June 1975 24237/75 Heading D1L Rayon yarn is washed in two-stages by (a) passing the yarn 4 around a pair of mutually inclined rollers 8 [see also Fig. 2 (not shown)], the lower of which is partially immersed in a bath 5 of water having a pH of 1.5-2.5 and a temperature of 30-45‹C and then (b) passing the pre-washed yarn around a second pair 3 of mutually inclined rollers (see Fig. 2) and under nozzle 13 spraying fresh washing water having a pH of 7.0-7.5 and a temperature of 50-75‹C, the excess water from the spray draining into the bath 5 down incline 1. The water level in the bath is maintained constant by overflow 6.
Patent GB-1049751-A (GB)
Title: Fuel element for high temperature and high power density nuclear reactor
IPC: G21C3/04
Filed: 1963-06-18
Abstract: 1,049,751. Fuel elements. NIHON GENSHIRYOKU KENKYUJO. June 18, 1963 [Sept. 21, 1962], No. 24244/63. Heading G6C, A fuel element for a high-temperature and high power density nuclear reactor comprises a cylinder or plate of refractory material covered with a layer of nuclear fuel material which is in turn covered with a coating of refractory and impermeable material. The cylinder or plate may be of either graphite or beryllium oxide, acting both as moderator and as structural material. If the fuel material consists of U233 and Th or U235 and U238 (wt. ratio 1:10), in the form of uranium-thorium carbide or uranium carbide, respectively, a graphite rod of about 50 mm. in diameter obtains an adequate atomic number ratio of carbon to U233 or U235 when fuel material of 0À2 to 0À3 mm. in thickness is applied on the surface. Suitable materials for the fuel covering include glassy carbon, pyrolitic carbon, silicon carbide and beryllium oxide. In one embodiment (Figs. 7 and 8, not shown), the outer surface of a hollow graphite cylinder 1 is covered with a fuel material layer 2 and a coating of an impermeable, refractory material 3. A graphite plug 5 reduces the void in the centre of the cylinder 1 and gaseous fission products leak through the cylinder 1 into the gap 4 between it and the plug 5 where they are removed by a purge gas flow and delivered into a fission products purification system. The fuel elements may alternatively be of plate form so as to increase the cooling area (Figs. 11 and 12, not shown), the plates having longitudinal ridges along their sides to space the fuel and covering layers of adjacent plates when these are stacked together. In a further embodiment (Figs. 13 and 14, not shown), the cylinder 1 of refractory material is of hexagonal cross-section and radially projecting ribs 6 are provided so as to reduce the possibility of the fuel and covering layers being accidentally knocked off in handling.
Patent GB-601626-A (GB)
Title: Improvements in or relating to the visible reproduction of signals
IPC: H01J29/14
Filed: 1945-09-19
Abstract: 601,626. Screens for cathode-ray tubes. SCOPHONY, Ltd. Sept. 19, 1945, No. 24292. Convention date, Sept. 27, 1944. [Class 39 (i)] In an electric signal reproducing device utilizing a screen consisting of crystal material whose light transmitting or reflecting power is changed by the impingement thereof of suitable radiation, luminescent means restore or assist the restoration of the normal light transmitting or reflecting properties of the screen. The front wall 11 of the envelope 10 carries a layer 12 of selected ionic crystal material, e.g. an alkali or alkaline earth halide, then a thin layer 13 of luminescent material, e.g. selenides or tellurides of zinc, cadmium or mercury activated by silver, copper, platinum or thallium which upon excitation by cathode rays emits infra-red radiation which destroys colour or opacity centres formed by preceding radiation in the ionic crystal layer 12. The luminescent layer 13 may be on the other side of the ionic crystal layer 12, but in this case the latter is slightly pervious to electrons or a separate beam of cathode rays of constant intensity is provided for exciting the luminescent layer. Short wave radiation, e.g. ultra-violet, may also be used for exciting the luminescent material. The exciting beams may impinge upon their respective layers at about the same time or the excitation of the luminescent material may be a predetermined time after the formation of opacity or colour centres, e.g. a whole scanning period, thus permitting a complete blending of picture frames in television. If a positive potential or electric field is required to assist the removal of the opacity or colour centres, metal may be sputtered upon the carrier of the layers, or formed as a transparent interlayer of metal between the crystal and luminescent layers, or a metal wire mesh may be interposed to act as an electrode. Both crystal and luminescent layers may be provided with a sputtered electrode layer to which lead in wires are sealed. The ionic crystal and luminescent materials may be formed into a single layer preferably with an excess of the former material ; and may be a mechanical mixture or a crystalline solid solution. Alternatively, the luminescent layer may be arranged either within or outside the tube at a distance from the crystal layer and be flushed by a wide defocussed stream of cathode rays, e.g. an elongated beam with a time delay of scan equal to one frame period. Specification 513,776 is referred to.
Patent GB-866759-A (GB)
Title: Improvements relating to scoop loaders and to attachments therefor
IPC: E02F3/30
Filed: 1958-07-30
Abstract: 866,759. Shovelling machines. KOEHRING CO. July 30, 1958 [July 30,1957], No. 24565/58. Class 68(1). In a shovelling machine the scoop 41 is pivotally mounted at the outer end of a boom section 21 in turn pivotally connected at the other end to a further boom section 11 which is pivotally mounted on a self-propelled chassis 1. Means, e.g. rams 52 between the two boom sections 11, 21 allow of relative movement thereof. The location of the connection between the outer boom section 21 and a tension means 3, e.g. a cable of fixed length extending between the boom section 21 and a fixed point, e.g. a winch on the chassis 1 ensures of the scoop moving substantially horizontally as the boom sections are moved relative to one another by the rams 52. The cable 3 which passes about a pulley 26 on an upstanding bracket 24 on the boom section 21 when wound in after the completion of the digging operation by the rams 52 causes vertical swinging of the boom and transfer of the scoop to the dumping position. During vertical swinging of the boom the parallelogram linkages formed by the boom sections 11, 21, links 15, and scoopsupporting arms 31 prevent spillage from the scoop, which can be rotated about pivotal connections between it and the arms by a ram 55 extending between the scoop 41 and boom section 21.
Patent GB-1318481-A (GB)
Title: Photocopying and photocopying machines
IPC: G03B27/52
Filed: 1971-04-19
Abstract: 1318481 Photo-copying apparatus KONISHIROKU PHOTO INDUSTRY CO Ltd 19 April 1971 [20 March 1970] 24566/71 Heading G2A In a scanning type photo-copier having relative movement between an original holder 1 and a lamp carriage 4, there is provided means for delaying the start of the scan for a predetermined time, during which time the lamps 2 are connected in series with a resistor (R) Fig.2 (not shown), thereby cutting the current supplied to the lamps and preventing local overheating of the holder 1. The start of the scanning movement after the predetermined time has elapsed, is synchronized with the lamps reaching their operative luminous state, such movement tipping an aim 5 of a microswitch S 2  to short out the resistor (R).
Patent GB-163730-A (GB)
Title: Improvements relating to electrical resistances
IPC: H01C10/38
Filed: 1919-10-08
Abstract: 163,730. Lyon & Wrench, Ltd., A., Engelke, W., and Todman, J. C. Oct. 8,1919. Contacts.-A variable resistance consists of a number of parallelconnected switches each having its movable member constituted by a resistance element. A suitable construction of switch arm comprises one or more metal blades 1 pivoted at 2 and attached to a handle 3, each blade being enveloped in asbestos on which the resistance wire 5 is wound helically. The ends of the wire and asbestos covering are held by clamps 6, under which may be placed additional insulation such as mica or enamel. Flexible conductors lead from the clamps 6 at the pivot end, while the other clamps form the moving contacts of the switch.
Patent GB-1145624-A (GB)
Title: Improvements in or relating to optical instruments for print quality analyses
IPC: G06K9/00
Filed: 1966-06-02
Abstract: 1,145,624. Measuring reflectivity photoelectrically. LAMSON PARAGON Ltd. June 2, 1966 [July 8, 1965], No. 24634/66. Heading G1A. [Also in Division G2] An instrument for analyzing the quality of a printed character on document 10 has a supporting platform 12 with an aperture 13 which is illuminated by standard light source 25, and an optical system 17 to episcopically project an image from aperture 13 on to a calibrated display screen 15, there being a photo-sensitive probe 30 with a calibrated area of response which uses a light-pipe and is movable over the projected image and whose response is displayed on electronic voltmeter 32 as a measure of the intensity of light reflected by the character. Document 10 is accurately positioned on platform 12 by micrometer means 14 until the selected character image is correctly aligned with the grid on screen 15. Meter 32 is calibrated by placing a standard reflector of magnesium oxide over aperture 13 to obtain absolute reflectance readings. The probe may be sensitive to visible or infrared radiation to provide readings comparable with the characteristics of an optical character reading device whose performance is to be assessed. An inverting, or Amici, prism 19 causes the image on screen 15 to move in the same sense as document 10 on platform 12.
Patent GB-205647-A (GB)
Title: Improvements in or relating to the paving of roadways and footpaths
IPC: E01C5/18
Filed: 1922-09-12
Abstract: 205,647. Owen, T. O. Sept. 12, 1922. Compound or composite blocks.-A paving for a road or path is formed from strips 1 of waste rubber cut from used motor tyres and embedded in a binder of asphalt, pitch or tar 2. In a modified form, Fig. 2, several thin strips of such rubber are secured together by wire stitching or nails 4, and embedded on edge in the binder 5, a smooth surface 6 of powdered wasterubber and bitumen being subsequently laid on top. In a further form, Fig. 3, the strips 7 are secured to strips of board 8 and are embedded in the binder, a smooth surface layer being added if desired.
Patent GB-860451-A (GB)
Title: Travelling-wave tubes
Inventor: BUHLMANN FREDERICK THEODOR
IPC: H01J23/26
Filed: 1959-07-17
Abstract: 860,451. Travelling wave tubes. MULLARD Ltd. July 17, 1959, No. 24650/59. Class 39(1). [Also in Group XXII] A travelling wave tube comprises an apertured metal disc D having a circular flange E and a helix having a main delay line section C, a quarter wave matching section B and a plurality of closely wound helical turns (in contact) which are brazed together to form a hollow cylinder which is engaged at one end by flange E and is brazed thereto thus locating the disc relative to the cylinder. The end section A of the tungsten wire helix and the inner surface of the flange of the disc are plated with gold, or less preferably, with copper, nickel or platinum or alloys thereof, e.g. by electroplating, or less preferably are painted with a colloidal suspension of gold. The helix may be glazed. The flanged metal disc is made of copper-nickel alloy. A prior art arrangement in which a tungsten wire helix has a #/4 impedance matching section of about one third of a turn at one end which is spot welded at its free end to a metal tube of copper nickel alloy is referred to. Specification 797,352 is referred to.
Patent GB-1468251-A (GB)
Title: Braking-mode detection circuit for dc electric motors
IPC: H02P7/29
Filed: 1974-06-04
Abstract: 1468251 Control of DC motors GENERAL ELECTRIC CO 4 June 1974 [11 June 1973] 24657/74 Heading H2J A series D.C. motor 12, 14 driving an electric vehicle is energized from a battery 10 through a thyristor 18 whose mark-space ratio is controlled by the output signal of an operational amplifier 124, which signal is also fed to one input of a comparator 32 whose other input receives, from a circuit 22, 24, 26, a signal representative of motor current, the arrangement being such that when the motor is operating in the drive mode, the comparator output is negative and blocked by diode 98, and when the motor operates in the braking mode (indicated when the comparator inputs achieve a predetermined relationship), the comparator output is positive and modifies the output of the amplifier 124. When driving, the output of the amplifier 124 is determined by the setting of the vehicle accelerator rheostat 116, whose signal is applied through a controlled acceleration circuit 114 for limiting the rate of signal increase to prevent wheel slip, by a network 117 whose signal corresponds to the desired motor torque at zero setting of the rheostat 116, and by a current-limit circuit 96 having a comparator 82 receiving the current signal from circuit 22, 24, 26 and a reference signal from members 88, 92 indicative of a desired maximum motor current. For currents below this reference the output of comparator 82 is negative and blocked by diode 84 from the amplifier 124, the positive output produced when the motor current exceeds the reference passing to amplifier 124 to reduce its signal and hence the mark-space ratio of the thyristor 18. When the detection circuit 100 senses the braking mode, the output of comparator 32 switches on a transistor 110 in circuit 114 to clamp its output at a fixed level and also increases, through members 90, 94, the maximum current limit of circuit 96 to produce a desired braking torque. Braking of the motor is effected by reversal of its field winding, Fig. 1 (not shown), with the resultant generated armature current flowing through diode 16 and the thyristor 18 being controlled at a reduced mark-space ratio. Typical characteristics relating motor voltage (corresponding to mark-space ratio) to current are discussed, Fig. 2 (not shown), to explain how the comparator 32 responds to the drive or braking condition regardless of the absolute values of current or mark-space ratio. The detection circuit may be modified to comprise two comparators (52, 54) having respective one and other inputs interconnected by a resistor chain (44, 46, 48, 50) and respective other and one inputs connected to the current and mark-space ratio signals, the comparator outputs being connected through diodes (56, 58), Fig. 4 (not shown). Thyristor 18 may have a conventional commutating circuit or be of the gate turn-off type.
Patent GB-1011697-A (GB)
Title: Nut and washer assembly
IPC: F16B39/26
Filed: 1964-06-16
Abstract: 1,011,697. Binding-posts. F. S. BRILES. June 16, 1964, No. 24838/64. Heading H2E. [Also in Division F2H]  A nut 10, e.g. for clamping down an eyelet attached to an electrical conductor, has a portion 16 with flats for engagement by a spanner and a flange 18 with a part-spherical surface on which slides a complementary skirt 32 of a resilient washer 12 thereby captive on the nut flange. The base 24 of the washer is frusto-conical and is flattened when the nut 10 is tightened down but resiles to its former shape on loosening the nut. The washer does not turn with the nut during tightening, because of the base shape, and its hole 26 has a diameter larger than that of the major diameter of the nut thread. The washer may be casehardened. There may be an antifriction washer of synthetic resin, e.g. containing a solid lubricant, on the bottom face 22 of the nut or on the top face 40 of the washer 12.
Patent GB-296444-A (GB)
Title: Improvements in devices for cutting sheet glass in plastic condition
IPC: C03B21/02
Filed: 1928-08-29
Abstract: 296,444. Naamlooze Vennootschap Mij tot Beheer en Exploitatie van Octrooien. Sept. 1, 1927, [Convention date]. Rolling.-Relates to a device for cutting a strip of sheet glass while it is still hot and plastic and is resting on the conveyer that carries it from the rolling mechanism to the leer. The device comprises a cylinder c, Fig. 4, which is arranged obliquely across the conveyer a and is formed with a helical groove h that co-operates with blades i secured transversely to, and projecting above the surface of the conveyer. The cylinder is carried by bearings which are free to move vertically against the action of springs. Flanges k, k<1> are formed on the ends of the cylinder, and the flange k has a recess l of the shape shown in Fig. 1. The recess has a shoulder l<1> which is adapted to be engaged by a lever d pivoted on one side of the conveyer a. Each lever is kept in a vertical position by means of a stop g and spring e. The blades i are held in grooves in the conveyer which may consist of an endless belt, a single table, or a succession of small tables. In operation, the conveyer carries a strip b of glass under the cylinder c until a lever d engages the shoulder l<1> of the recess l, as shown in Fig. 1. The lever then rotates the cylinder until the groove h engages a blade i. The engagement of the groove and the blade continues the rotation of the cylinder until the strip of glass has been cut through from one edge to the other. When the table is run back to receive another strip of glass, the levers d swing about their pivots as they pass under the flange k, the springs e returning them to the vertical position as they move clear of the flange.
Patent GB-332776-A (GB)
Title: Improvements in or relating to guards for carding engines
IPC: D01G31/00
Filed: 1929-08-15
Abstract: 332,776. Pickford, J. Aug. 15, 1929. Interconnecting guard with starting - gear. - Mechanism for locking the door of a carding-engine and preventing its opening until the cylinder is at rest, and also for preventmg movement of the driving belt on to the fast pulley whilst the door is open, comprises a single locking-roller situated in a stationary casing and adapted to be rolled on the side of the cylinder out of engagement with a notch in a sliding bar connected with the door, thereby freeing it, such rolling only being possible when the cylinder is at rest. A stationary casing B, containing a roller C, is bolted to the frame of the carding engine. The roller normally rests in a notch d' in a sliding bar D. The casing is provided with an aperture b so arranged above the central axis of the roller that the roller cannot be gripped between the fingers to raise it from its locking position. Upon the roller being folled on the surface of the cylinder A' above the notch d', the door E<1> may be opened, thereby sliding the bar D and operating a cam F to move, a strap obstructing member G into the operative position. As shown, the bar is widened and formed with operating surfaces, a surface d<5> operating the cam F and a surface d<3> serving to support the roller in its upper position. An inclined surface d' allows the roller to return slowly to its lower position as the bar advances. The end part of the bar may be shortened by extending the notch d<1> only part way across the bar and by carrying the lower surface d<4> to the end of the bar. In the form shown, the strap obstructing member G is pivoted on the side of the casing B remote from the fast and loose pulleys, but, in a modification, it is pivoted on the adjacent side, the cam is dispensed with, the strapobstructing member being directly operated by the end of the bar D, and the casing B is bolted to the bend of the carding engine.
Patent GB-376084-A (GB)
Title: Method and device for forming designs in plastic material
IPC: B44C1/24
Filed: 1931-09-04
Abstract: Plastic material is decorated by pressing a die plate carrying the design in relief against the surface and afterwards smoothing over the hollows thus formed by pressing a smooth plate against the surface.  The projecting portions of the design on the plate may be covered with colour before application to the material. Preferably one plate is employed, one side carrying the pattern and the other being smooth, the plate being adapted to rotate to apply either side to the material at will, and in some cases to be turned-over automatically by the movement of the ram of the press in which the pressure operation is performed.  To imitate wood, the natural wood is photographed and an engraving formed in a steel plate, which is used as the pressing-member.  The plate is supplied with colour by a brush or the like while the engraved side is facing upwards and is inverted during the downward stroke towards the material.
Patent GB-865821-A (GB)
Title: Improvements in or relating to pressure welding
Inventor: EATON NORMAN FRANK
IPC: B23K20/02
Filed: 1958-08-01
Abstract: 865,821. Welding by pressure. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. July 14, 1959 [Aug. 1, 1958], No. 24957/58. Class 83 (4). In pressure-welding a metal end-cap 6 to a metal tube 2 containing a close-fitting rod 1, the tube is provided with a frusto-conical end-face 3 and is supported in a split die 4 having a wall section tapering away from the end-face, the die is supported in a sleeve 5 having a wallsection tapering towards the end face and the end cap is forced against the end face by a tapered punch 8 having a leading face of smaller size than the internal size of the tube so that the end cap slips over the end face during welding. The die is provided with heating means and welding may take place at ambient or elevated temperature.
Patent GB-201442-A (GB)
Title: Furnace walls for boiler installations and other places
IPC: F27D1/00
Filed: 1922-09-15
Abstract: 201,442. Liptak, M. Sept. 15, 1922. Building-blocks, special shapes of.-A furnace wall comprises a permanent outer wall including pocket-forming sill and lintel blocks 15, 16, Fig. 2, and a. replaceable wall including shelf-forming blocks 25 interlocking with the sill blocks at 27 and secured by wedge blocks 28. The blocks 15 are locked to buck-stays 19 by hooked bolts 20 and the outer wall is completed by courses of bricks 18. Courses of firebrick 24, 29 are supported by the shelf blocks 25. A clearance space is left between the pocket blocks and the sheif blocks to prevent fusion &c., and the latter blocks may be loosened by means of a tool inserted through apertures 32 in the lintel blocks. In a modification, the sill and lintel blocks are horizontally offset and are connected at the joints of the lintel blocks by pilaster blocks. In a further modification, the inner wall is a monolithic or cast structure of crushed firebrick &c. supported on the shelf blocks. In another modification, Fig. 6, adapted for use as a partition wall, the pocket forming blocks 35, 39 present open pockets, on each side of the permanent with which are interlocked two sets of shell blocks 41 on which may be built up replaceable walls of fire-brick 40, 43. In a further modification, the permanent central wall is built up wholly or in part of pocket forming blocks similar to those shown in Fig. 2, alternate vertical courses of which face in opposite directions to accommodate on each side of the central wall shelf blocks on which replaceable walls mav be built up. Specification 168,558, [Class 51 (i), Furnaces and kilns, Combustion apparatus of], is referred to.
Patent GB-706053-A (GB)
Title: Improvements in or relating to the cold separation of air
IPC: F25J3/04
Filed: 1951-10-25
Abstract: 706,053. Low temperature separation of air. BRITISH OXYGEN CO., Ltd., and WEBSTER, T. J. Oct. 14, 1952 [Oct. 25, 1951], No. 24989/51. Class 8 (2). In a low temperature air separation process the carbon dioxide content of the air is first reduced to not more than 100 parts per million, the air is then compressed to at least 40 atmospheres pressure, cooled in heat exchangers and partially liquefied so as to freeze out residual carbon dioxide which is removed before the air passes to a rectification zone.