baber/WOPTO huggingface dataset:
Patent GB-1177576-A (GB)
Title: Improvements relating to Butterfly Valves.
Inventor: DEWIDELS JAN RICHARD
IPC: F16K1/228
Filed: 1967-10-06
Abstract: 1,177,576. Valves. CRANE Ltd. 6 Oct., 1967, No. 45870/67. Heading F2V. A butterfly valve comprises a body 1, which consists of a central tubular portion having at each end outwardly projecting flanges, an internal annular groove (6, Fig. 2, not shown), formed in the tubular portion and housing a steel or bronze spring band 5, and an elastomeric liner 3 formed with a tubular portion which firmly embraces the body tubular portion and outwardly extending flanges 4 which partly overlie the body flanges, a shaft 8, on which the closure member 2 is mounted, extending through the elastomeric material and through bosses 7 and 18 formed on the spring and body respectively. The free ends of the spring have connected thereto lugs 11, which lugs are embraced by clamp jaws 12 movable relative to each other, as by a keynut 17, in order to draw the spring ends together subsequent to closing of the valve or to permit separation of the ends prior to opening of the valve, the arrangement serving to enhance sealing without increasing the torque necessary to open and close the valve. A centering lug 9 is provided on the spring, which lug engages a corresponding recess 10 in the valve body 1 In an alternative embodiment, not shown, the lug 9 is omitted, the spring is formed of two half portions and a similar and second clamping arrangement is provided diametrically opposite the one shown. In either case actuation of the clamps may be effected manually as by keynut 17 or by a pneumatic or hydraulic motor or by an electric motor.
Patent GB-991006-A (GB)
Title: Improvements in or relating to the measurement of heat
Inventor: STEGHART FRITZ LUDWIG FELIX
IPC: G05D23/24
Filed: 1961-12-21
Abstract: 991,006. Measuring heat flow electrically. SATCHWELL CONTROLS Ltd. Dec. 14, 1962 [Dec. 21, 1961], No. 45918/61. Heading G1N. The heat supplied to a heating system is determined by measuring the quantity of electrical energy supplied to a heater 4 (Fig. 2), located in a measuring conduit 5 which passes a pre-determined fraction of the fluid in the system return conduit, to maintain the temperature of the fluid in the measuring conduit, as measured by a resistance thermometer 9, equal to the temperature of the fluid at the inlet to the flow conduit, as measured by a resistance thermometer 1. The resistances 1, 9 are combined in a bridge circuit feeding an amplifier 13 which energizes a relay 13a whose normally open contact 17 controls the energy supplied to the heater 14 through a voltage stabilizer 19 and is parallel with a synchronous motor and counter 18. In an alternative arrangement (Fig. 2), two pairs of resistance thermometers 1, la and 9, 9a respectively located in the flow and return conduits, and downstream and upstream of the heater 14, are combined in two bridges A, B, the outputs being fed in opposition to amplifier 13. The bridge voltages are unequal to ensure that the unbalance signals are equal when the heat supplied to heater 14 is the appropriate fraction of the heat lost in the heating system 3. To improve accuracy, the voltage supplied to bridge A is reduced as the temperature in the return conduit 4 rises, by a thermister 12c located in conduit 4 and connected in parallel with the bridge input.
Patent GB-1525690-A (GB)
Title: Process for purification of phosphonitrilic chloride polymers
IPC: C01B21/097
Filed: 1975-11-05
Abstract: 1525690 Phosphonitrilic chloride polymers ETHYL CORP 5 Nov 1975 [6 Nov 1974] 45950/75 Heading C1A Purified trimeric and tetrameric phosphonitrilic polymers are obtained by passing an inert hydrocarbon solvent vapour having at least one saturated aliphatic hydrocarbon with 6 to 8 C atoms through a crude phosphonitrilic chloride polymer melt to obtain a vapour comprising the solvent and the trimers and tetramers, wherein the vapour is condensed and the trimers and tetramers separated therefrom.
Patent GB-956886-A (GB)
Title: Improvements to automatic slack adjusters for vehicle brakes
Inventor: FEUILLY JULES EMILE JOSEPH
IPC: B61H15/00
Filed: 1961-12-21
Abstract: 956,886. Automatic slack adjusters. SVENSKA A. B. BROMSREGULATOR. Dec. 21, 1961, No. 45963/61. Addition to 954,032. Heading F2E. In a modification of the parent Specification the clutch ring 47 co-operates, in the brake release position, with a friction element comprising a coiled spring 54 one end 55 of which is bent radially outwards to form a driving toe in engagement with the rotatable rod member 35. The spring is coiled about the clutch ring with its other end engaging the other non- rotatable rod member 45. In a further modification the friction element comprises a ball which bears against the rim of the clutch ring, the ball being housed in an aperture in the non- rotatable rod member 45, a member in driving connection with the rotatable rod member 35 being provided with an oblique face to force the ball inwardly to frictionally engage the clutch ring 47 in the brake released position (Fig. 4, not shown). In the construction of Fig. 4, the clutch ring is self-centring and when the ball frictionally engages the clutch ring the latter moves radially to co-operate with a seat of the non-rotatable rod member 45. The ball is held in its housing by a spring. The member provided with the oblique face is retractable manually for adjustment of the adjuster. Specification 421,759 also is referred to.
Patent GB-1350880-A (GB)
Title: Cop lifting mechanism for ring spinning or doubling frames
IPC: B65H67/04
Filed: 1972-10-06
Abstract: 1350880 Doffing FRIED KRUPP GmbH 6 Oct 1972 [8 Oct 1971] 46273/72 Heading DID Cops are lifted from spindles on a ring spinning frame by tandem fork rails 1 which engage under the cops to lift them. The fork rails comprise vertically movable supports 2, rods and chains 6, 5 and a threaded rod for moving the fork rails. As shown, bobbins are doffed by forks 28 on rail 1 when the rail is lifted by motor 16 and the rods and chains linkage. The rods 6 can comprise lost motion links so that one fork rail are lifted after the other. Forks 19 may lift the ring rails simultaneously.
Patent GB-1492794-A (GB)
Title: Heat exchangers
IPC: F28F9/14
Filed: 1974-10-25
Abstract: 1492794 Pipe couplings SUDDEUTSCHE KUHLERFABRIK JULIUS FR BEHR 25 Oct 1974 [25 Oct 1973 31 May 1974] 46325/74 Heading F2G  In a heat exchanger including a fin-and-tube block and a tank having a wall 1 in which passages 4 for the cylindrical tubes 5 in the block are integrally formed, each tube 5 is secured in a passage 4 by an interference fit, and each passage 4 is located in a planar section of the wall and has a cylindrical extension extending from one surface of the wall to provide a cylindrical inner surface contacted by the respective tube 5. The radius of curvature R 1  of the transition between said one surface of the wall and the outer surface of the passage is smaller than the radius R 2  at the transition between the other surface of the wall and the inner surface of the passage, and the point B at which the radius R 2  merges with the cylindrical inner surface lies within the planes of said surfaces of the wall. The passages 4 may project out of the wall towards the block rather than into the interior of the tank. The interior length L of the passage 4 is preferably three times the distance X or three times the thickness of the wall 1. A sealing element may be provided along a contact edge of passage and tube as at 15. The tank is constituted by the wall 1 and a cover 2 which has a lower edge 7 accommodated in a peripheral channel and flange 6 of the wall 1, a sealing element 8 having lips 9 being inserted between the parts.
Patent GB-1325907-A (GB)
Title: Scintillation camera device
IPC: G01T1/164
Filed: 1970-09-30
Abstract: 1325907 Optical position finding; scintillation cameras E TANAKA T HIRAMOTO and N NOHARA 30 Sept 1970 [1 Oct 1969] 46508/70 Headings H4D and H4F A scintillation camera device for determining the distribution of a radio-active isotope taken into an object 1, e.g. a human body, comprises a regular hexagonal array of photomultipliers, e.g. 4a ... 4e arranged adjacent a light guide 3 and scintillator 2, radiation passing from the object 1 into the scintillator 2 via a collimator 7. The outputs of the photomultipliers 4a ... 4e along one axis of the photomultiplier array are processed in a circuit 16 to give a measure of the distance along this axis a scintillation occurs and this is fed into the terminal X of a cathoderay tube 15. The outputs of the photomultipliers on an axis at right-angles to the first axis are processed in a circuit 17 identical to circuit 16 and fed to terminal Y of the cathode-ray tube 15. The input to the terminal Z of cathode-ray tube 15 comes from a mixer 18, which sums the outputs of all the photomultipliers, via a pulse height analyser 19. In the circuit 16 the outputs from the photomultipliers 4a ... 4e are each connected to a delay line 10 through a preamplifier 8 and voltage-current converter 9, the gains of the pre-amplifiers 8 decreasing linearly in the order 4a ... 4e. The output from the delay line 10 is passed into a wave-forming circuit 12 which forms the output from each photomultiplier into a bipolar symmetrical wave, the outputs adding together to form a composite wave which has a zero value at one point, the time at this point, due to the delay line 10, giving a measure of the distance of the scintillation along the axis 4a-4e, and this time being detected in the zero cross discriminator 13. This time is converted to a voltage in the time-to-pulse height converter 14, which establishes the voltage relative to the time of the output from the pulse height analyser 19, and the resulting voltage is fed to the terminal X of the cathoderay tube 15. The delay line 10 may be replaced by a delay element. For each of the two axes a second identical circuit may be attached to the other end of the delay line 10, thus producing a second voltage indicative of the position of the scintillation along each axis, a difference amplifier being included to produce a balance between the two voltages from the twocircuits. In this case a resistor may be included between each pre-amplifier 8 and the corresponding converter 9, and for the photomultipliers 4a and 4e a second converter and a variable resistor may be included between the pre-amplifier and delay line, in parallel with the other converter and resistor so as to eliminate distortions on the edge of the image.
Patent GB-466314-A (GB)
Abstract: 466,314. Ticket printing machines. CLAYTON DEWANDRE CO., Ltd., and HARRIS, W. P. Aug. 21,1936, No. 24168/35. [Class 100 (iv)] [Also in Group XIX] Index type-wheel machines; hammer-impressions arrangements.-Relates to a ticket-printing machine, which may be attached as an auxiliary printing-machine to ticket-issuing machines of the type described in Specification 397,889, [Group XIX], for the purpose of overprinting the inserted ticket with a range of values additional to those printed by the main machine. The ticket is inserted in a slot 4, and the rotatable printing-drum 2 having been selectively set by rotating a knob 8, the operator depresses a lever 38 to raise the printing-platen 47 through a link 24 and rocking arm 43. When the setting-knob 8 is released, a disc 15 is returned by a spring to zero position and its slot 18 is engaged by a pawl 17, which is now free to move because a control lever 19 has been released by the setting of the knob 8 turning a locking-pin 20. The rocking move, ment thus imparted to the pawl shaft 16 withdraws a pawl 22 from a slot 23 in the link 24 which is thus freed for operation. On depressing the link 24, a pawl 34 rocks a lever 32 until the pawl 34 lies below a pin 33 on the lever, and when the operator finally releases the link 24, its upward movement rocks the lever 32 to disengage a pawl 30 from a ratchet-wheel 29 to allow a spring 52 to restore the printing-wheel 2 to zero position. During this movement, the value overprinted on the ticket is set upon the registering-counter 55, and pawl 22 is caused to re-engage and lock the link 24. A full-stroke device is provided comprising a pawl 39 engaging teeth 41, 42 on the link 24.
Patent GB-1366813-A (GB)
Title: Dynamoelectric machines
IPC: H02K1/16
Filed: 1972-10-11
Abstract: 1366813 Dynamo-electric machines GENERAL ELECTRIC CO 11 Oct 1972 [19 Oct 1971] 46866/72 Heading H2A To protect the teeth of the laminated stator core of a dynamo-electric machine from axially directed end region stray flux, the winding conductors are surrounded by electrically conductive members where they emerge from the core, circulating currents being induced in these conductive members by the stray flux to set up a magnetic field which diverts the stray flux away from the teeth. In a turboalternator having a double layer winding, short circuited coils such as 8a to 8d, Fig. 1a, each surround four conductors 4 where these emerge from the core 1, the coils being overlapped as shown. In a modification, Fig. 3, conductive annuli 9 and 10 are placed adjacent the comductors and are interconnected by conductive radially extending members 11. In a modification (Fig. 4, not shown) of the Fig. 3 construction, the outer ring 9 is omitted and the radially extending members are joined to a conventional flux shield 5 protecting the yokeportion of the core from end region stray flux.
Patent GB-1364029-A (GB)
Title: Electrostatic dust collector for exhaust gases containing fine particles
IPC: B03C3/12
Filed: 1972-10-11
Abstract: 1364029 Electrostatic precipitators NIPPON KOGEI KOGYO CO Ltd 11 Oct 1972 [14 Jan 1972 8 Feb 1972] 46914/72 Heading B2J An electrostatic precipitator comprises an earthed housing 12 acting as a collecting electrode; discharge electrodes in the form of wires 3 tensioned by a motor and pulley arrangement 8, 9; and an earthed perforated electrode 2 positioned upstream of the wires 3 so that a weak electrostatic field is established between it and the wires. The arrangement is such that fine particles in an exhaust gas, e.g. from a rotary kiln, electric furnace or the like, are aggregated during their movement through the electrode 2 and to the electrodes 3 to form coarse particles which are deposited on the housing 12 from which they can be removed by rapping, &c. The electrode 2 may be placed across a restricted portion of the duct through which the gas flows (Fig. 2, not shown), and may be in the form of a wire cloth, an array of bars, a shutter arrangement, a box-shaped lattice, a perforated plate, or a triple-thickness array of wire cloth (Figs. 4 to 12, not shown). A humidifier may be provided upstream of the electrode 2 (Fig. 3, not shown). The collecting electrodes may be in the form of a wire net spaced from the wall of the housing 12, and the dust from the electrodes may be deposited on to a coveyor or in to a removable tray, (Figs. 13 and 14, not shown). An embodiment having a gas passage divided by partitions associated with collecting electrodes is described with reference to Fig. 15 (not shown).
Patent GB-1526728-A (GB)
Title: Cargo loading vehicle
IPC: B60G17/033
Filed: 1974-11-01
Abstract: 1526728 Adjusting vehicle clearance ATEL PRODUCTS Ltd 17 Oct 1975 [1 Nov 1974 47449/74 Heading B7D A vehicle has means for jacking a chassis with respect to a set of wheels to provide increased ground clearance. As shown in Fig. 1 a pair of lifting arms 4 are each pivoted via bracket 5 to the chassis 1 and pivotally connected at a rear end to a wheel mounting subframe 11 and at a forward end to a lever 24 of a toggle mechanism 27. Operation of hydraulic cylinder 28 causes toggle linkage to move in direction A which raises the forward end of arm 4 to raise the chassis with respect to the wheels 12. Each pair of wheels is mounted in a frame rotatable for steering in subframe 11, a hydraulic cylinder 14 actuating track rods 16 pivotally connected to respective frames 13.
Patent GB-474873-A (GB)
Abstract: 474,873. Weighing-apparatus. MATTOCKS, J. H. Feb. 10, 1937, No. 3998. [Class 143] In a weighing-machine the indicator shaft 5 rests on a rigid support and is actuated from a sector 1 by means of a pair of primary ribbons 13 tensioned by a secondary ribbon 16 attached to a weighted lever 18, or a spring, directly mounted on the sector. The primary and secondary ribbons wind in opposite directions round a barrel 6 on the indicator shaft. The barrel is supported on the curved surface of the sector. Lateral movement of the indicator shaft is prevented by friction wheels at the ends of the shaft, and axial movement is prevented by end plates. The weighted lever 18, with or without a pendulous lever 22, constitutes the counterbalancing resistant of the machine. The primary ribbons 13 are attached to the sector 1 by means of a rocker 24, Fig. 6, adjustable by screws 25. In a modification, a single primary ribbon is arranged between two secondary ribbons each tensioned by a weighted lever 18.
Patent GB-1072253-A (GB)
Title: Improvements in or relating to an air-cooled cylinder of an internal combustion engine
IPC: F02F1/08
Filed: 1963-12-02
Abstract: 1,072,253. Casting composite engine-cylinders. MASCHINENFABRIK AUGSBURG - NURNBERG A.G. Dec. 2, 1963 [Dec. 3, 1962], No. 47505/63. Heading B3F. [Also in Division F1] An air-cooled I.C. engine cylinder 2, with integral head 3, is cast around a liner 1, the upper end la of which extends with the head 3, immediately after casting the liner with aluminium by hot-dipping. The liner 1 may be of steel and the cylinder and head of aluminium. The portion 1a of the liner may have holes 6 into which the cylinder metal flows during casting to improve the securing of the liner; alternatively the part 1a may be of dove-tailed or stepped shape.
Patent GB-1498174-A (GB)
Title: Variable venturi
IPC: F16K7/02
Filed: 1973-10-11
Abstract: 1498174 Valves; Venturi tube ALLIED POLYMER GROUP Ltd 3 Jan 1975 [11 Oct 1973] 47511/73 Headings F2V and F2P An adjustable Venturi device comprises a tube whose wall is provided with a number of slits extending along the tube whereby, upon relative solely axial movement of the end regions of the tube, the intermediate region can adopt a reduced diameter. The intermediate region is subjected to a radially-inward bias by a resilient ring or sleeve encircling the tube, by external fluid pressure or by means of fold lines or articulations in the tube material. The tube may be formed of thin metal, semi-rigid plastics, fibres or filaments, reinforced plastics or rubber sheet, or woven or non-woven material stretchable in one or two directions. The tube may comprise a number of strips 9, Fig. 5, connected to end rings by pivot pins 10 and covered by an external sheath 22 which provides sealing and the inward bias. Alternatively, the tube may be integral and have slits therein of elongated diamond or elliptical form. The slits may extend parallel to or obliquely to the longitudinal axis of the tube.
Patent GB-1119880-A (GB)
Title: Method of treating tobacco
IPC: A24B3/12
Filed: 1966-10-26
Abstract: 1,119,880. Heat-treating tobacco. HAUNI-WERKE KÍRBER & CO. K.G. 26 Oct., 1966 [17 Nov., 1965], No. 47966/66. Heading A2C. [Also in Division F4] During a drying process the nitrogen compound content of Burley tobacco is reduced by heat-treating the tobacco with air having a temperature of about 100‹C. and a moisture content such that the heated tobacco and the hot air are in hygroscopic equilibrium. The tobacco T is carried .successively on a perforated conveyer belt 14 through -three drying chambers, .a heating chamber, .and a cooling chamber. Air within the heating .chamber is circulated .by fan 58 up through the tobacco T and down over a heater 64. Moistening of the air is effected by a device 76, fresh air is admitted at .66, and controlled .exhaustion of air is effected through valve 68. A thermometer 72 and an hygrometer 74 are also provided. In the drying chambers the moistening davies 76 is omitted, and in the cooling chamber the device 76 is replaced by an extraction fan and the heater 64 is omitted.
Patent GB-1384489-A (GB)
Title: Supports for cans with translatory motion in a circular path at the outlet from textile machines
IPC: B65H67/04
Filed: 1973-10-17
Abstract: 1384489 Coiling sliver SOC ALSACIENNE DE CONSTRUCTIONS MECANIQUES DE MULHOUSE 17 Oct 1973 [26 Oct 1972] 48317/73 Heading D1F In a sliver coiler, with a cam 1 clamped between fixed and movable jaws 4 and 5 on a platform 2, an electric motor (not shown) drives through chain and sprocket 39, "synchronising" shaft 31, worms 32, 32A, and worm wheels 34, 34A, to rotate crank discs 21, 21A, which transmit by arms 28, 28A, a translatory motion to platform 2 on a circular path of radius determined by the cranks formed by adjustably positionable gudgeons 26, 26A, balls 14 on which platform 2 rests rolling around the bases of fixed shallow bowls 15. When a full cam is to be replaced, an electro-magnetic catcher system 45 ensures that the platform 2 steps in position shown at 2A in readiness for receipt of exchange cam 1B.
Patent GB-1194759-A (GB)
Title: Domestic Cooking Oven
IPC: F24C15/20
Filed: 1968-10-14
Abstract: 1,194,759. Catalytic burners; burning waste gases. UNITED-CARR Inc. 14 Oct., 1968 [13 Oct., 1967], No. 48556/68. Headings F4T and F4W. A catalytic burner unit 10 is provided in the outlet vent in the top wall of an oven to burn off hydrocarbon smoke and comprises a strip of fibrous material 20 coated with a noble metal catalyst, e.g. palladium or platinum on a three-quarter inch strip of asbestos, and a strip of corrugated metal 18, e.g. stainless or aluminized steel, wrapped together into a coil contained in a cylindrical housing 16 by transverse bars 26, 28 at the cylinder ends. A heater is provided close below the unit 10. The strip 20 is coated with catalyst by passing it through a suspension of the catalyst in a highly polar flammable liquid with a relatively high boiling point, e.g. cyclo-hexanene and burning off the liquid to leave the metal mechanically adhered to the strip.
Patent GB-1452645-A (GB)
Title: Rolling mills
IPC: B21B31/10
Filed: 1974-11-11
Abstract: 1452645 Rolling mills BLAW-KNOX FOUNDRY & MILL MACHINERY Inc 11 Nov 1974 [4 Dec 1973] 48698/74 Heading B3M A roll stand in a continuous strip rolling mill has work rolls 18 and 20 which are spaced apart from each other during and after their removal from the stand, so that they do not interfere with strip being rolled in the mill. As the roll chocks are moved out of the stand, stools (which are initially located in cavities in the chocks on the operator side of the mill) are positioned between the chocks to keep them spaced apart. Before the work rolls are removed, the chocks 14 and 16, Fig. 2, are moved apart, the upper ones by raising rams 32 and the lower ones by lowering rams 44. The rams, which may be used for crown control of the work rolls, leave the chocks supported by rails 30 and 40. The rails, Fig. 4, extend between the housings of the stand and support the chocks as they are withdrawn from the stand. To maintain the chocks spaced apart as they move out of the stand, stools 70 and 90 are located within cavities in the operator side chocks 14 and 16. The stool 70 is drawn into cavities 80, 82 as the chocks are moved, whereas the stool 90 is picked up by cavities 100, 102 in the chocks 14<SP>1</SP>, 16<SP>1</SP> on the drive side. Both sets of chocks are therefore maintained in a spaced condition as the rolls are moved clear of the stand. The rolls are pulled clear of the stand by a ram assembly (Fig. 6, not shown) and supported on a carriage 132, Fig. 8, by shifting the carriage laterally, a new set of rolls is aligned with the mill and can be inserted in the stand. Pivotally arranged floor plates 140, 142, 146, and 148 serve as support rails for the chocks when they are in their raised positions, the upper edges of the rails being alignable with the rails 40 within the stand.