baber/WOPTO huggingface dataset:
Patent GB-313882-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H03B13/00
Filed: 1929-06-11
Abstract: 313,882. Associated Telephone & Telegraph Co., (Assignees of Richardson, R. G.). June 18, 1928, [Convention date]. Vacuum tubes.- The target of a cathode-ray tube for use as a telephone repeater consists of two segments, connected to the opposite ends of a centre tapped winding of a transformer in the output circuit, the cathode ray beam being deflected by the incoming speech currents so as to impinge intermittently on the segments. As shown in Fig. 1, a telephone repeater has a cathode 6, a perforated shield 7, a tubular anode 8, and a target consisting of insulated plates 9, 10 which are connected with the primary 15 of a transformer the mid-point of which is connected through a battery B<1> with the anode battery B. The beam is deflected by an electromagnet 11 having windings 17 carrying speech currents. The point of impact of the beam may be adjusted by varying a resistance 13 in series with a third winding 12 on the magnet. In the frequency-changer shown in Fig. 2, the target consists of a number of insulated segments 51 connected alternately in pairs, one set of segments being connected with one end of the primary of a transformer T, and the other set through a switch S with the other end. The beam is deflected by pairs of plates 41, 42 and 43, 44, of which the plates 41, 42 are connected across a resistance 48 and the plates 43, 44 across a resistance 47. The resistances 47, 48 are connected across a generator G, and inductance 46 being in series with the resistance 48 and a condenser 45 in series with the resistance 47, so that the voltages applied to the plates are out of phase. A filter may be connected in parallel with the primary of the transformer. The frequency of the output current is a multiple of the frequency of the deflecting potential, and is dependent upon the number of segments; two frequencies may be obtained by using a target having two concentric systems with more segments in one system than in the other.
Patent GB-952793-A (GB)
Title: Improvements in and relating to the manufacture of fibres from thermo-plastic organic materials
IPC: D04H3/16
Filed: 1962-05-10
Abstract: 952,793. Artificial fibres. COMPAGNIE DE SAINT GOBAIN. May 10, 1962 [June 2, 1961; Jan. 27, 1962], No. 17972/62. Heading B5B. Organic thermoplastic material is heated to an operating temperature above that which would normally bring about thermal decomposition, and formed into a stream which is then subjected to at least one gaseous current whose temperature is below that which would normally bring about thermal decomposition, the gaseous current breaking up the stream, and attenuating it to fine fibres, at the same time cooling them below the thermal decomposition temperature. In a further embodiment, the stream of thermoplastic is formed into filaments or fibres by e.g. a centrifugal device, which are then attenuated and cooled by the gaseous currents. The duration of heating at the operating temperature is such that the properties of the material are not substantially changed, e.g. 0.5 to 1.5 mins. for polyethylene (400-150‹ C.), polystyrene (400- 450‹ C.), polyamide (300-400‹ C.) and polypropylene (390-450‹ C.). Preferably the material is heated to the maximum or operating temperature in or immediately in front of the region where filament or fibre formation takes place. In one embodiment (Fig. 1), thermoplastic material is fed by screw 2 through heated body 1, to heated head 5 from whence it drops as a stream into a fibre-forming device, comprising a hollow body 7 rotating at high speed, the peripheral band 8 of which is provided with rows of apertures 9. The stream is collected in hollow distributer 10 fixed to the rotatable body 7. The distributer is also provided with apertures 11 through which the material is projected under centrifugal force on to peripheral band 8 and thence through apertures 9, under centrifugal force, to form filaments. The thermoplastic material at this stage may be at e.g. 400-150‹ C. having been heated to this temperature during its passage through body 1, or heated in the fibre-forming apparatus 7 by means e.g. of hot gas inlet 12, an electrical heating coil or by dielectric loss. An annular chamber 13 has continuous slot 14 by the passage of currents of hot gas e.g. air or steam, which attenuate the filaments into fine fibres, which are then rapidly cooled. The cooling may be effected by air currents induced by the hot gas currents, or by additional currents of gas leaving annular chamber 14, or by the atomisation of finely divided liquid. Alternative centrifugal fibre-forming devices are described. In a further embodiment (Fig. 3) no fibreforming device is used. Screw extruder 17 delivers a stream 18 of thermoplastic material at the operating temperature to jets of gas, e.g. air, or steam, supplied by nozzles 19, the jets effecting the breaking up of the stream and attenuation into fibres, which are cooled by induced air currents.
Patent GB-736462-A (GB)
Title: Improvements in or relating to rotary liquid meters
Inventor: FRAZER JOHN
IPC: G01F3/06
Filed: 1954-06-17
Abstract: 736,462. Rotary meters. AVERYHARDOLL, Ltd. June 17, 1954 [July 1, 1953], No. 18265/53. Class 110 (2). A rotary liquid meter is made to different capacities by bolting together two or more similar units to form a single meter. Each unit has a casing 10 having an inlet port 21 and an outlet port 19, the casing bore being made up of two concentric arcs 14, 15 of different radii and two connecting curves 16, 17. A rotor 37 with four radial vanes 39 connected in pairs by rods 41, co-operates with the casing bore. In Fig. 2, three casing members 10 are bolted together to form a single housing closed at each end by double end plates 12, 13 with packing rings 28, 27. Three rotor members 37 are bolted together, members 43 locating the correct alignment' and the end members have stub shafts 47 which are journalled in bearings 48 in the end plates 12. One stub shaft carries a stem 49 which drives any suitable counting mechanism. The middle rotor member 37 is angularly displaced slightly relative to the other two so partially closing the axial ends of the vane slots to limit the axial movement of the vanes 39. A space 53 between each pair of end plates 12, 13 is placed in communication with either the inlet or outlet side of the meter by passages 52. A manifold unit 29 is bolted to the meter combining the three inlet ports 21 into a single inlet passage 35 and the three outlet ports 22 into a single outlet passage 36. Specification 648,024 is referred to.
Patent GB-1396208-A (GB)
Title: Process for the production of isoprene
IPC: B01J21/20
Filed: 1973-04-17
Abstract: 1396208 Isoprene SUN RESEARCH & DEVELOPMENT CO 17 April 1973 [17 April 1972 (2)] 18424/73 Heading C5E [Also in Division C2] Isoprene is prepared by reacting methylal, CH 2 (OMe) 2 , with isobutene and/or butene-2 in the vapour phase in the presence of solid boron phosphate as catalyst. The reaction may be carried out at 150-450‹ C. A co-catalyst comprising MgSO 4 , BaSO 4 , PbSO 4  or Cu 3 (PO 4 ) 2  may be included in amount 1-25 wt. per cent of the total catalyst. The butene feed may be in the form of a C 4 -C 5  hydrocarbon mixture containing at least 5% isobutene.
Patent GB-1445300-A (GB)
Title: Transmission line analysis and design method
IPC: H01P3/08
Filed: 1974-04-26
Abstract: 1445300 Computer aided design INTERNATIONAL BUSINESS MACHINES CORP 26 April 1974 [14 May 1973] 18477/74 Heading G4A Information representing elements present in a transmission line network and the electrical and delay characteristics of the transmission line structure are processed by a computer into a tableau matrix representation of the corresponding topological equations and from which solution vectors are computed for successive time intervals to determine the response of the network, this response being compared with a prespecified desired response and a set of input design parameters being modified as a result of the comparison and the process being repeated until the computed response and required response are within a predetermined tolerance. The lengths of the successive time intervals may be varied as a function of the rate of change of the computed response, the values of previous time intervals, and the difference between the computed response and a response value extrapolated from the previous computed response.
Patent GB-1423833-A (GB)
Title: Rotor blades for fluid flow machines
IPC: F01D5/20
Filed: 1972-04-20
Abstract: 1423833 Turbine and like blades ROLLSROYCE (1971) Ltd 19 April 1973 [20 April 1972] 18488/72 Heading F1T Leakage flow over the tips of gas turbine engine rotor blades 19 is utilized to help drive the rotor by providing an inclined vane 27 on the tip of each blade. As shown, the vane 27 varies in radial height over its length, and is formed on a blade shroud 25 with sealing lips 26 co-operating with a sealing lining 30. As shown in broken line, the vane is of constant height over its length. It may be curved, inclined to a radial plane or turned over at its radially outer end, Fig. 4c, (not shown). It may be formed adjacent exit holes (34), Fig. 4b, (not shown), in the blade tip for cooling air flowing in channels longitudinally of the blade. Also, the exit holes may be covered by a cap (52), Fig. 5a, (not shown), adapted to deflect the cooling air on to a vane (58), or the vane may be formed on top of such a cap, as described in 48598/72.
Patent GB-1215395-A (GB)
Title: Improvements in plastic sheet material having textured surface
IPC: B29C70/64
Filed: 1968-04-19
Abstract: 1,215,395. Moulding sheet material. UNIROYAL Inc. 19 April, 1968 [18 May, 1967], No. 18545/68. Heading B5A. [Also in Divisions A4 and B1-B2] A layered product, e.g. a sheet, floor covering or car mat, is made by applying a layer of plastisol to a surface and then applying thermoplastic granules to the plastisol layer before heating the assembly to fuse the plastisol. The granules may be applied directly to the " tacky " surface of the plastisol layer or, if the plastisol layer is gelled, a further thin layer of plastisol is applied before the application of the granules. A coating of a plastisol may be applied to the granules to receive a deposit of fibrous flock. The first plastisol lay may be applied directly to the mould surface or to a support surface, e.g. a woven or non-woven fabric, which remains as a reinforcing of the moulded article. The mould surface may be a contoured mould or an endless belt and the coatings may be applied by brushing, spraying or dipping or by doctor blades. The thermoplastic granules are prepared by breaking up a coherent mass of fused powder, chips or pellets and plasticizer. The granules may be mixed with or dipped in additional plasticizer. Excess granules may be removed by shaking or blowing. The plastisol or granules may include a blowing agent.
Patent GB-709707-A (GB)
Title: Improvements in chains for counting electric impulses
IPC: H03K23/82
Filed: 1950-07-25
Abstract: 709,707. Electronic counting-apparatus. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. July 25, 1950 [Aug. 1, 1949], No. 18558/50. Class 106 (1) In an electric counting chain of cascadeconnected binary trigger stages, each .stage consists of an input valve L1, an output valve L2, at least one RC coupling 11, and an output circuit including means for suppressing impulses of one polarity and transmitting impulses of the other polarity, and the, output circuit of each stage (except the last) is connected to an actuation input for the valve L1 of the next following stage through transfer means controlled in dependenee on the condition of that stage to apply to this input either a transmitted triggering impulse with the unsuppressed polarity or a triggering impulse of the suppressed polarity derived from the transmitted impulse; this latter triggering impulse may be preceded by the transmitted impulse from which it is derived. In the binary counting chain illustrated in Fig. 4, comprising Schmitt trigger stages, negative output pulses are short-circuited by a network comprising an inductance 8 and rectifier 9 while positive pulses are transmitted through an electronic switch 16 or a switch and inverter 17 according to the condition (non-conducting or conducting) of the input valve L1 of the following stage. In another form, Fig. 6, if the input valve L1 is conducting, the application of a positive pulse to the RC input circuit 38-40 will cause a delayed negative triggering pulse to be applied to the valve due to " grid overshoot." A known form of binary counting chain also is described using symmetrical trigger stages.
Patent GB-1299721-A (GB)
Title: Improvements in inductive signalling
Inventor: SPRIGGS ARTHUR GORDON
IPC: B66B19/06
Filed: 1969-04-11
Abstract: 1299721 Inductive signalling WESTING- HOUSE BRAKE & SIGNAL CO Ltd 19 March 1970 [11 April 1969] 18654/69 Heading H4U In a sensing arrangement for an inductive signalling system, of the type in which the mutual inductance of two coils is influenced by a further coil introduced into the vicinity of the two coils, a body of metal is positioned adjacent the two coils so that their mutual inductance is only influenced by said further coil. By this means spurious sensing, which could be caused by masses of metal near the two coils, is prevented. As shown, a cage 2 carrying a mining truck 3 is to be correctly positioned in relation to the shaft landing and the truck 3 must be correctly positioned within the cage so that the truck may be unloaded via a tilting platform 1. A sensing head 10 mounted on the platform 1 comprises a pair of coils co-operating with a coil 12 on the cage 2 to close an oscillatory loop and provide the correct frequency to operate a detector 11. A body of metal 13 is positioned adjacent the head 10 and is so dimensioned that the influence of other metallic bodies is swamped, the frequency produced by the coupling due to the body 13 alone being such that detector 11 is not operated. To ensure correct positioning of the truck, the wheels of the truck co-operate with switches 14 to alter the inductance of coil 12 by short-circuiting part of the coil or by varying its resistance, the corresponding change in the oscillatory loop being detected at 11. A "fail-safe" arrangement may be provided by arranging that oscillations cease when the cage is in the correct position. The coil 12 may be tuned.
Patent GB-675503-A (GB)
Title: Improvements relating to welding and like processes
IPC: B05B7/20
Filed: 1950-07-26
Abstract: 675,503. Uniting and dividing by fusion; soldering. SEMENITZ, C. July 26, 1950 [July 27, 1949], No. 18700/50. Class 83 (iv)] Metal is treated, e.g. welded, cut or soldered,. by directing a closed gas flame with a conical core on to the metal and delivering powder as a dense stream to the apex of the core. In an embodiment of a burner with a powder supply, a powder hopper a with a hollow spherical bottom b is adjustably mounted in a recess in the casing e, its position being fixed by a nut d. Powder in the hopper a falls under gravity into a passage f and is then entrained in compressed air passing along the passage g from an inlet i controlled by a trigger-operated valve h. The air and powder pass into a tube m, which enters and extends inside a pipe w supplied with an oxygenacetylene mixture, to be finally delivered from a nozzle q as a dense stream. In a further embodiment, a hopper device having a spring- pressed plunger, is clipped on a normal burner and the powder, entrained in compressed air is delivered through a narrow tube external to the nozzle and inclined at an angle to the nozzle axis. The hopper of one embodiment may replace the hopper in the other and vice-versa.
Patent GB-590060-A (GB)
Title: Improvements in and relating to electric control systems employing limit switches for electric and other motors
IPC: H02P7/20
Filed: 1943-11-10
Abstract: 590,060. Fluid-pressure servomotorcontrol systems. SIMMONS, J. D., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Nov. 10, 1943, No. 18713. Drawings to Specification. [Class 135] [Also in Group XXXVII] In a system for controlling a hydraulic motor in which the operation of a limit switch gives rise to a torque dependent on the speed of the motor and in opposition to the movement of the motor, a rectifier is arranged so that when the motor is reversed the opposition torque is eliminated or reduced. In the arrangement described a reversible hydraulic motor is controlled by a throttle valve operated by a moving coil electromagnetic device, the moving element of which has a main and an auxiliary winding. In normal operation, the direction and amount of opening of the valve is dependent on the direction and magnitude of the current supplied to the main winding through any suitable control means from a source of constant voltage. At each limit of motor travel, the auxiliary winding is energized through a limit switch and rectifier from a tachometer generator coupled to the motor so as to oppose the main winding and thereby reduce motor torque. Thus, the motor may be held against limit stops by a torque of low value. On reversal of the motor, the rectifier is no longer conductive and the motor moves away from the stop with full acceleration. Two pairs of limit. switches may be used so that only one rectifier is necessary. In a modification, the throttle valve may be manually operated and a byepass valve, which is spring-biassed to its closed position, opened electromagnetically, to reduce motor torque at the limits of motor travel, by a winding corresponding to the auxiliary winding above.
Patent GB-134367-A (GB)
Title: Improvements in Aero-urethroscopes.
Inventor: CAMBELL ARCHIBALD
IPC: A61B1/12
Filed: 1918-11-15
Abstract: 134,367. Cambell, A., and Wilson, C. Nov. 15, 1918. Addition to 123,365. Appliances for illuminating cavities.-The operating-cap of the urethroscope described in the parent Specification is replaced by a cap a the end or closure member of which is constituted by an examination lens b formed with an eccentricallyplaced hole c fitted with a toolguide d. The guide is fitted with a screw cap e adapted to compress a packing-ring f through which the operating-tool is passed. The gulae d may be permanently or detachably fitted to the lens. The cap may be used for both examination and operation, or may be used in conjunction with an ordinary examination cap.
Patent GB-938533-A (GB)
Title: Improvements in seat cushion for dish shaped seats
IPC: A47C7/18
Filed: 1962-05-15
Abstract: 938,533. Securing upholstery. G. GRAMMER. May 15, 1962 [May 23, 1961], No. 18743/62. Class 52 (4). A cushion 8 for a dished seat 7 is provided with a profiled, elastic, edge member 5 secured thereto which engages over the flanged edge 10 of the seat and extends to the inside of the seat. The cushion may comprise a base portion and three side portions secured together by welding. The edge member 5 is flexible and elastic and may be of polyvinyl chloride.
Patent GB-1299007-A (GB)
Title: Epicyclic gear
IPC: F16H1/46
Filed: 1970-04-20
Abstract: 1299007 Toothed gearing EISENWERK WULFEL 20 April 1970 [26 April 1969] 18783/70 Heading F2Q In a planetary reduction gear having a sun 12, an internally toothed ring gear 4, and at least three stepped planets 6/7, 9/10 with their smaller portions 6, 9 meshing the ring gear 4 and their larger portions 7, 10 meshing the sun 12, circumferentially adjacent large planet portions 7, 10 are axially staggered to allow the use of larger diameter planet wheels than would be possible if they were all in the same plane. In Figs. 1, 2, four stepped planets are carried on shafts 5, 8 in an output carrier 11. The sun 12 is in two axially spaced portions on an input shaft 1. More than four planet shafts may be used. In Fig. 6, all the larger planet portions 21 are on the same side of the ring gear 22, giving closer spacing of the suns, but requiring two different types of stepped planet. The gear may have two inputs, or two outputs, or the carrier may be the fixed element.
Patent GB-698491-A (GB)
Title: Improvements in or relating to the extrusion of thermoplastic materials
Inventor: HARTLAND DEREK
IPC: B29C48/06
Filed: 1950-07-27
Abstract: Vinyl chloride polymer compositions suitable for moulding by extrusion (see Group V) comprise (1) polyvinyl chloride, chlorinated paraffin, dibutyl phthalate, lead carbonate, litharge, ethyl palmitate and carbon black; (2) copolymer of vinyl chloride and vinyl acetate, dibutyl tin dilaurate and dehydrated castor oil; (3) copolymer of vinyl chloride and vinyl acetate, dioctyl phthalate, basic lead carbonate and calcium stearate.
Patent GB-254115-A (GB)
Title: Method of distilling bituminous fuels
IPC: C10B19/00
Filed: 1925-07-24
Abstract: 254,115. Pritzbuer, G. July 24, 1925. Retorts; coking processes. - Bituminous fuel such as coal is distilled by being heated with sudden increases of temperature, the supply of heat being reduced or stopped between these heating intervals. The heating may be effected by electric currents passing either through the material or through coils surrounding the material and molten metal may also be used. The heat impetus is produced in a rotary retort, Fig. 2, enclosed in a heating chamber a divided into smaller chambers each heated by a burner g, separate burners d producing a local high temperature. The distilling furnace shown in Fig. 4 is provided with conveyer bands l along which the material trends from the charging device v to the discharging device v', molten metal or other molten substances being circulated by a pump r through coils s which are indirectly heated by immersion in a lead bath heated by burners o. Local heating is effected by the passage of electric current from copper rollers x through the fuel to a metal plate y. Distillates are withdrawn by suction.
Patent GB-169816-A (GB)
Title: An improved sheet metal wheel
IPC: B60B1/00
Filed: 1920-07-06
Abstract: 169,816. Drew, H. J., Drew, J. A. H., Newman, R. W. S., and Olsen, C. N. July 6, 1920. Disc wheels.-Relates to wheels and pulleys of the kind comprising two similar discs which are mounted on a hub barrel and when drawn together grip the tyre at the circumference. According to the invention, the hub member is threaded at each end to take respectively a nut and cap, and shoulders or distancepieces are provided to space the discs at their centres and to act in conjunction with the cap and nut to clamp the discs in position. In one construction, Fig. 1, the hub barrel 16 has a threaded anlargement 13 at the outer end to take the cap 14, and is also threaded at its inner end to take the nut 17. The centres of the discs are held between the enlargement 13, the distance sleeve 16, and the nut 17. In a modification, Fig. 10, the hub has stepped shoulders 32, and the disc centres are correspondingly formed and clamped between the shoulders and the cap 39 and nut 40. Rotation between the discs and hub is prevented by the provision of flats or keys and key-ways. The discs are secured together near the rim by bolts, or by tongues pressed out of one and passed through slots in the other. A watertight packing consists of a ring 25 of soft metal or the like may be interposed between the rim parts. In the construction shown in Fig. 2, the tyre is provided with a flap 30 of canvas or other material which is gripped between the rim parts. Reference has been directed by the Comptroller to Specifications 6201/96 and 142/00.
Patent GB-1026124-A (GB)
Title: Improvements in or relating to crystal oscillators
Inventor: MURDEN PETER
IPC: H03B5/34
Filed: 1962-05-17
Abstract: 1,026,124. Frequency - changing circuits. PYE Ltd. May 7, 1963 [May 17, 1962], No. 18975/62. Heading H3F. [Also in Division H1] The outputs of two independent pairs of electrodes on the same crystal (see Division H1) are mixed in a triode-hexode valve V to produce a beat frequency of about 500 kHz. The crystal is an AT-cut quartz disc utilizing the thickness-shear vibrational mode. It is shown on the Figure as two separate elements.