baber/WOPTO huggingface dataset:
Patent GB-272407-A (GB)
Title: Improvements in and relating to concentric cables for alternating currents
IPC: H01B7/30
Filed: 1927-01-18
Abstract: 272,407. Vernier, C. Jan. 18, 1927. Cables with antiinduction devices; cables, arrangement and disposition of parts of. -- A concentric cable for the transmission of three-phase currents of high and very high voltage comprises conductors a, b, c in which the resistances, inductances and capacities are equalized by balancing. With a star-connected system the balancing is effected by crossing over from one conductor to another so that each phase comprises equal lengths of inner, middle and outer conductors between the terminal points. With mesh-connected systems, the outer conductor can be earthed to, or, to avoid parasitic currents, insulated lightly from, the lead sheath d, and the inductances and capacities between the a and c. and b and c, phases balanced by cross-connection at the middle of the cable. The inequality in the capacities between the a and b phases is reduced by increasing the diameter of the conductor a. To avoid unequal expansion of the conductors, the inner conductor is made of copper, the middle one of aluminium, and the outer one of zinc or lead. Alternatively, the conductors may be formed of different crosssectional areas so that the different current densities in the conductors will give equal expansions.
Patent GB-558094-A (GB)
Title: Improvements in, or relating to, furnaces for the heat treatment of materials
IPC: C21D1/767
Filed: 1942-02-06
Abstract: 558,094. Circulating furnace atmospheres. BIRMINGHAM ELECTRIC FURNACES, Ltd., and HARRIS, J. Feb. 6, 1942, No. 1571. [Class 51 (ii)] In furnaces for the heat treatment of materials by the circulation of furnace atmospheres particularly where the atmosphere is circulated by one or more fans through an atmosphere heating chamber and a treatment chamber, vane systems are provided in the path of the furnace gases where they undergo a change of direction and extend transversely of the path. As shown in Fig. 1, an atmosphere heating chamber 1 is separated by a partition 3 from the treatment chamber 2 and diverging vane systems 5, 6 are located at the end of the partition where the gases flow from the chamber 2 to the chamber 3. The vanes are of concavo-convex form in cross section as shown in Fig. 7, the opposed surfaces of the vanes being concentric to provide passages between the vanes of uniform cross section. Where the heating chamber extends around three or more sides of the treatment chamber a number of sets of vanes are provided. Specification 558,110 is referred to.
Patent GB-1218912-A (GB)
Title: Blast furnace operation
Inventor: NIXON IVOR GRAY
IPC: C21B5/06
Filed: 1968-01-04
Abstract: 1,218,912. Reducing iron ores. BRITISH IRON & STEEL RESEARCH ASSOCIATION. Jan.4, 1968 No.1593/69. Divided out of 1, 213, 641. Heading C7D. A blast furnace for producing molten iron or ferrous alloy is operated by partially or completely reacting the off-gas containing H 2 O and CO 2 , withdrawn from one of the reducing zones or the preheating zone of the furnace, with a gaseous, liquid or solid hydrocarbon fuel, e. g. methane, butane or naphtha, in a separate heated reaction system, e. g. a tubular heater and/or a regenerative heat exchanger, and preferably in the presence of a catalyst therefor, to form a gaseous mixture containing CO and H 2  which is recycled into the furnace, preferably to the secondary reduction zone wherein wustite is reduced to sponge iron, e. g. at 700-1100‹ C, so that, when mixed with the gases rising from the melting zone, the mixed gases effect gaseous reduction of the iron ore while not oxidizing any coke carbon. As shown, the off-gas is preferably withdrawn from the preheating zone from the top 41 of the blast furnace 42 and delivered through gas lines 46,47, water washer/ cooler 48 and tubular heater 49, where it is mixed and reacted with a hydrocarbon stream from inlet line 51, to auxiliary tuyeres 50 distributed around the periphery of the furnace bosh so that the recycle stream e.g. at 500-1000‹ C. is introduced above the melting zone 45. Oxygen, e. g. preheated air blast, and/or additional hydrocarbon may be injected through line 43 and tuyeres 44.
Patent GB-942307-A (GB)
Title: Electric alternators
Inventor: BANCROFT NORMAN ROY
IPC: H02K19/20
Filed: 1960-01-18
Abstract: 942,307. Inductor attenuators; dynamoelectric machine coils. PYE Ltd. Jan. 13, 1961 [Jan. 18, 1960], No. 1716/60. Heading H2A. The cylindrical stator yoke 4 of an inductor alternator comprises a stack of concentric axially extending laminations constructed as disclosed in Specification 906,942. The alternator operates by supplying coil 10 with D.C. so that a magnetic flux passes through laminated member 8 and air-gap 9 into rotor 2 to produce a magnetic field at poles 3, at the other end of the rotor. Rotation of the rotor causes a pulsating flux to pass through laminated member 6 to generate an A.C. voltage in winding 5. In a modification, rotor poles 3 are laminated and extend outwardly to pass a pulsating flux through an annular air cored winding situated adjacent to the yoke, Figs. 3 and 4 (not shown). The coil used is of the basket type and consists of individually formed coils interleaved into a two-layer formation making a complete annular coil which may be embedded in epoxy resin. Alternatively, a printed circuit construction of this coil may be used. In all cases the rotor poles may be shaped to produce the required output waveform and the machine may be made self-exciting by supplying winding 10 from the rectified A.C. output.
Patent GB-232676-A (GB)
Title: Improvements in the reversing device for reciprocating engines fitted with cam-controlled poppet valve gears
IPC: F01L29/04
Filed: 1924-01-22
Abstract: 232,676. Caprotti, A. Jan. 22, 1924. Addition to 170,855, [Class 102 (i), Pumps &c.]. Hand, foot, and like gear. - In gears having separate admission and cut-off cams angularly adjustable by sleeves on a quick-pitch screw through straps having lost-motion relative to the sleeves as described in the parent Specification, the reversing crank-shaft A<1> is given an extra angular adjustment beyond the full-steam ahead or full-steam backward positions to prevent lost motion during which time the straps K, K<1> move freely on their sleeves M, M<1>. The cams then occupy substantially the same positions for forward and reverse movement for each notch of the reversing-quadrant. The quadrant, Fig. 1, has fifteen notches. Positions 1, 13 represent full ahead and reverse; the additional positions 0, 14 enable the angular adjustment to be effected.
Patent GB-586949-A (GB)
Title: Improvements in apparatus for heating rooms and like spaces
IPC: F28D1/02
Filed: 1942-02-11
Abstract: 586,949. Unit air heaters. GENERAL ELECTRIC CO., Ltd., and EAVES, E. Feb. 11, 1942, No. 1776. [Class 137] An,air heater comprises a casing 1 extending from or near floor level to a height of more than six feet above the floor and containing heating elements 3 and a fan 4 drawing in air through apertures at the top of the casing and discharging heated air through apertures at the lower part of the casing. The heating elements comprise electric resistances 3 or are heated by products of combustion and are mounted with the electric fan at the top of the casing. The heated air is guided by internal partitions 7 to several horizontal slits 5 near the base of the casing each covered by downwardly directed louvres 6. The casing is supported by the floor or on a wall. Specification 165;129, [Class 137], is referred to.
Patent GB-1236961-A (GB)
Title: Improvements in or relating to electric impulse transmitters
Inventor: BARNABY BERNARD SYDNEY
IPC: H04M1/272
Filed: 1968-01-12
Abstract: 1,236,961. Shift register. GENERAL ELECTRIC CO. Ltd. 13 Jan., 1969 [12 Jan., 1968], No. 1923/68. Heading G4C. [Also in Divisions H3-H5] Dynamic stepping registers in a telephone substation impulse transmitting circuit may comprise stages such as shown in Fig. 4 in which potentials stored by the capacitative input electrodes of transistors 59, 63, are stepped from stage to stage by interlaced pulse trains on leads 65 and 66. An alternative form of register, two stages of which are shown in Fig. 6, is operated by four phase stepping pulses on leads 73 to 76 and has the advantage of low current consumption. The registers form part of integrated circuits.
Patent GB-1115692-A (GB)
Title: Improvements in or relating to a device for generating a variable function
IPC: G01F1/50
Filed: 1966-01-14
Abstract: 1,115,692. Flow meters. J. SORTEBERG. Jan. 14, 1966, No.1935/66. Heading G1R. [Also in Divisions F2 and G3] In an instrument the output signal of which is proportional to the mass flow rate of a gas through an orifice 15 in a duct 14, a device I for deriving a mechanical output Y=Kx=C where x is a variable mechanical input and C and K are constants, comprises input and output thrust members 5, 10, both pivoted to a roller 8 which bears against an angularly adjustable plane 9 the setting of which determines the constant K, an adjustable compression spring 11 acting on a collar 12 of the member 10 to provide the constant C, and bellows 1 which convert a fluid pressure input into a mechanical input to the member 5. Signals from temperature and pressure sensing elements 16, 17 and fed to respective devices I, II, which are similar, and the outputs A, B of these devices, representing absolute temperature and pressure, act on a beam W 1  having a fulcrum R 1 . A vane 19 on the beam controls a nozzle N L  to provide an air pressure signal 21 to an air motor AM causing the latter to adjust the fulcrum position to balance the beam W 1 . A signal of the pressure difference across the orifice 15 is fed from a transmitter 18 to a bellows unit IV to produce a thrust D on a beam W 2  the fulcrum R 2  of which moves with the fulcrum R 1 . A vane 20 on the beam W 2  controls a nozzle N R  to provide an air pressure signal 22 to a bellows unit III providing a balancing thrust C on the beam W 2 , the signal 22 also forming the output of the instrument.
Patent GB-1134301-A (GB)
Title: A process for the production of a gas-tight connection between metal and ceramic components
IPC: H01J5/26
Filed: 1967-01-13
Abstract: 1,134,301. Welding by pressure; jointing. SIEMENS A.G. 13 Jan., 1967 [14 Jan., 1966], No. 2073/67. Headings B3R and B3V. [Also in Division C7] In making a gas-tight connection between a metal component and a ceramic component, the metal component is diffusion welded to a pyrolytically deposited metal coating on the ceramic component. A ceramic rod is disposed within a chamber filled with tungsten hexacarbonyl gas and is seated on a metal support, the support and adjacent part of the rod being surrounded by a high frequency induction coil. The support is heated and transfers some of its heat to the rod, tungsten being deposited pyrolytically on the support and heated part of the rod. The induction coil and rod are moved relatively and tungsten is deposited over the rod. The rod may be further heated inductively to increase the layer thickness. The coated ceramic and a metal component are now diffusion welded by the use of high pressure and temperature but without an intermediate solder. To lead a rod or tube 14 through a boiler wall 19 for a reactor or direct energy conversion, a ceramic ring 15 is coated at 16 and 17 with tungsten as described above, its flat parallel faces are ground and a flanged ring 18 is shrunk on to the ceramic ring. A slightly upset portion of the rod 14 is pressed into the slightly conical bore of the ceramic ring and diffusion welding is effected between the coatings 16, 17 and the rod and flangering. The welding may take place after the flange ring has been welded at 20 to the wall 19.
Patent GB-340153-A (GB)
Title: Improvements in and relating to vehicle brakes
IPC: B60T11/04
Filed: 1930-01-21
Abstract: 340,153. Compensating for wear in brakes. KLEINER, M., Sabine, Gt. North Road, North Finchley, London. Jan. 21, 1930, No. 2084. [Class 103 (i).] In a brake mechanism of the kind in which brake blocks are automatically adjusted to compensate for wear by means of mechanism embodying a toothed member actuated to apply the brake, a number of spring-controlled pawls 9a of different lengths, either pivoting on a common pin 10 on an operating lever 4 actuated by a rod 15a, or arranged one in advance of the other, are used to operate a ratchet wheel 1 and a number of corresponding fixed pawls 12 check the return movement. As shown the toothed member 1 is secured to the cam brake shaft 2 of a brake in which a pair of shoes pivoted at their adjacent ends are thrust apart at their other ends by the cam. Bosses 3, 5 on the wheel support respectively the box-like lever 4 and a plate 6 which closes the lower part of the lever 4 and is rigidly held by an adjustable rod 7, Fig. 5, the lever 4 being free to oscillate by means of screws 8 on the lever moving in curved slots on the plate 6.
Patent GB-755212-A (GB)
Title: Improvements in or relating to cut-off valves
IPC: F16K31/34
Filed: 1953-01-26
Abstract: 755,212. Fluid-pressure servomotors; valves. GLOSTER AIRCRAFT CO., Ltd., and ABSOLON, E. W. Jan. 26, 1954 [Jan. 26, 1953; Sept. 4, 1953], Nos. 2188/53 and 24499/53. Class 135. A valve for closing the inlet 31 to a tank 30, e.g. an aircraft fuel tank, when the tank is full comprises a spring-loaded closure member 40 actuated by a diaphragm 37 whose lower face is constantly subject to inlet pressure through a restricted orifice 49 and whose upper face is sub - ject to inlet pressure, resulting in closure of the valve, when a shuttle pilot valve 45 and a float 44 by which it is actuated are in their upper positions, and to tank pressure, enabling the pressure below the diaphragm to open the valve, when the pilot valve and float are lowered. The restriction 49, with which may coact a tapered needle 50 carried by the diaphragm, limits the rate of closure of the valve so that although the float is not situated at the highest level of the tank the delay in closing of the valve results in complete filling. A flared outlet 35 from the valve reduces frothing. According to Provisional Specification an upwardly facing cone is situated at the bottom of the outlet 35, the main valve is constituted by a disc secured directly to the diaphragm, and the float is below the diaphragm. In another construction according to this Provisional Specification, the main valve, carried directly by the diaphragm, coacts with a downwardly facing seat and is constantly acted upon in the opening direction by inlet pressure. The float is arranged above the main valve.
Patent GB-1139596-A (GB)
Title: Processing of geophysical data
Inventor: FOSTER MANUS READ
IPC: G01V1/36
Filed: 1966-01-18
Abstract: 1,139,596. Geophysical prospecting. MOBIL OIL CORP. 18 Jan., 1966, No. 2315/66. Heading H4D. In a method for separating distortion and desired reflectivity components of geophysical data the data is autocorrelated to provide a signal having a component representing said distortion component and a component representing reflectivity characteristics of geological formations, and the spectrum of said signal is smoothed by filtering to separate its two components. In the embodiment of Fig. 2 for obtaining an inverse filter for removing from a seismic trace distortion due, for example, to shot pulse variations and multiple reflections, a selected portion or "window" of a seismic trace recorded on magnetic drum 16 is autocorrelated in unit 20. The distortion and reflectivity components of the correlation signal are stated to have relatively smooth and ragged spectra, respectively, and are separated by multiplying the correlation signal by a truncating function, e.g. a factor M(t) which varies with time from zero to a maximum and back to zero. The distortion component is applied to a digital or analogue system 22 which computes coefficients for a time-domain filter 23 producing filtering which is the inverse of the distortion operator. The complete seismic trace is filtered by inverse filter 23 and may be further filtered by a bandwidth limiting filter 24. The inverse filtering may be effected by digital computer or an electrical or magnetic delay line filter. Details of digital and analogue versions of system 22 (Figs. 3 and 5, not shown), and of a magnetic delay time inverse filter (Fig. 4, not shown) are given. In the Fig. 6 embodiment for processing the seismic trace in the frequency domain a selected portion of the trace is autocorrelated, the correlation signal is applied to a Fourier spectrum analyser 202 and its spectrum is smoothed by convolving it in unit 203 with a function M(f) which is the frequency domain equivalent of the truncating function M(t). The convolution may be effected by digital or analogue techniques. The output of the convolver 203 is applied to a spectrum inverter 204 for determining the inverse distortion operator. The output of the inverter 204 is applied directly, or after multiplication by a time domain truncator, to an inverse filter 207 which filters the seismic trace.
Patent GB-877264-A (GB)
Title: Shoe-making apparatus for the shaping of footwear soles
IPC: A43D35/00
Filed: 1959-01-22
Abstract: 877,264. Shaping soles. ETABLISSEMENTS OMIC. Jan. 22, 1959 [Jan. 28, 1958; May 29, 1958], No. 2351/59. Class 17(1) The upper die of a sole forming machine is a membrane 2 1  closing a container 2 3  filled with fluid. The sole is positioned on the lower die longitudinally by means of an adjustable stop 9, arid laterally by means of pivoting arms 5. When the sole is placed on the lower die, a foot pedal (not shown) is depressed. A spring-contact member of a micro-switch follows the foot pedal for part of its travel, thus maintaining closed the circuit of an electromagnet and holding the pivoting arms 5 in their open position. When the spring-contact member leaves the pedal, the arms 5 move inwards to position the sole. At the end of the travel of the foot pedal, a hydraulic ram lifts the lower die towards the upper die, and sole forming commences. The machine may be duplex, two foot pedals being arranged so that when one pedal is in its uppermost position the other is in its lowermost.
Patent GB-545676-A (GB)
Title: Improvements in or relating to circular independent needle knitting machines
IPC: D04B9/10
Filed: 1941-02-21
Abstract: 545,676. Knitting-machines. WILDT & CO., Ltd., HOLMES, H. H., and SAUNDERS, A. P. Feb. 21, 1941, No. 2375. [Class 74 (ii)] A circular machine is provided with means for enabling needles rendered inactive during reciprocating knitting to assume a position in which the old loops on these needles are held in the hooks of the needles, together with picker mechanism to cause appropriate needles to take up this position or to be restored to knitting position. The invention is described in connection with a superposed cylinder machine with double-ended needles, but is stated to be applicable to such machines having single-ended needles, to cylinder- and dial machines and to plain machines having rotary or stationary needle cylinders and having either latch or bearded needles. A cam 24 is arranged so that in one position it engages the needles sliders 5 in the bottom cylinder so that all of the needles clear and knit, and in a second position permits the needles to remain in substantially the knocking-over position. The needles required for knitting are raised by a cam 28 or 29 operative upon jacks 26 arranged below the needle sliders, and narrowing pickers 30, 31 act upon the appropriate jacks so that butts thereon pass beneath a cam 33 or 34 into a track F so that the corresponding needles do not clear or knit. A widening picker 27 is provided for raising appropriate jacks so that they are raised by the cams 28, 29. The jacks 26 may be utilised for patterning purposes or additional jacks may be provided for the patterning. The narrowing pickers 30, 31 may each have a tail portion 31a extending between levers 57, 58 connected together by a spring 60, so that swinging movement of the picker either upwardly or downwardly is against spring action.
Patent GB-432274-A (GB)
Title: Improvements in and relating to insulation for heat, cold and sound
IPC: E04B1/80
Filed: 1934-01-24
Abstract: 432,274. Nonconducting coverings for heat and sound. AUBANEL, J. E., 77, Greenhill Park, New Barnet, Hertfordshire, and ALABASTER, G. H., 104, West Hill, Putney, London. Jan. 24, 1934, No. 2431. [Class 64 (ii)] In heat and sound insulating material comprising corrugated sheets of paper 2 superimposed one upon the other and enclosed in a moisture proof wrapping 5, the paper sheets are provided with a glossy surface to reduce heat radiation. Sheets of metal foil may be interspaced between the paper sheets to aid this effect. The moisture proof wrapping may consist of two layers of paper united by bituminous cement.
Patent GB-1281961-A (GB)
Title: Improvements in or relating to logic circuits having short circuit protection means
IPC: H01L21/822
Filed: 1970-01-19
Abstract: 1281961 Transistor switching circuits NATIONAL SEMICONDUCTOR CORP 19 Jan 1970 [10 April 1969] 2431/70 Heading H3T [Also in Division H1] An integrated logic output stage (Fig. 5) is protected against short-circuiting of the output terminals by a transistor 68 the emitter junction of which is shunted by a 10 ohm resistor 88. In operation, with a positive input at 42, transistors 44 and 72 conduct and the transistors of the Darlington pair 50 and transistor 68 do not. There is thus zero output. But with a negative input transistors 44 and 72 switch off and the Darlington pair conducts. For acceptable current loads transistor 80 remains non-conductive but when current exceeds a certain threshold it is driven into conduction. The resulting fall in potential at 62 switches off the Darlington pair, leaving the 1000 ohm. resistor to control the output current. When the output current falls the circuit reverts to its previous condition. Resistor 88 is preferably constituted by the spreading resistance of the transistor emitter region between two spaced contacts one of which is also directly connected to the transistor base.
Patent GB-286056-A (GB)
Title: Improvements in or relating to conveyors for granular or powdered material
IPC: B65G19/20
Filed: 1927-01-28
Abstract: 286,056. Landale, D. Jan. 28, 1927. Endless-chain pushplate conveyers; pushplates, construction of. -Each push-plate A is attached to a central member C which is inserted between the links B of the driving chain. A single plate may be provided instead of the two as shown if it is desired to convey on one run only.
Patent GB-512239-A (GB)
Title: Improvements in the production of extensible slivers of staple fibre from bands of continuous filaments
IPC: D01G1/08
Filed: 1938-01-26
Abstract: 512,239. Stapling continuous filaments. GROVES, W. W. (I. G. Farbenindustrie Akt.- Ges.). Jan. 26, 1938, No. 2512. Drawings to Specification. [Class 120 (iii)] A sliver of staple fibre is formed from a band of continuous filaments by a single or manifold tearing operation, the draft or the first draft between the feed and tearing rollers being less than 2.5. Preferably the percentage difference between the peripheral speeds of the feed and draft rollers calculated on the speed of the former is about twice the percentage extensibility of the filaments, e.g., when the extensibility is about 20 per cent the best draft is about 1.4. and when the band is torn by a manifold tearing operation, at each draft subsequently to the first the draft is adjusted to suit the changed extensibility of the fibres. By this means it is stated that a sliver is obtained having a high proportion of fibres within the limits of staple length required and examples of drafts &c, are given. The sliver produced may be crimped.