baber/WOPTO huggingface dataset:
Patent GB-189846-A (GB)
Title: Apparatus for measuring and delivering pre-determined quantities of liquids
IPC: B67D7/60
Filed: 1921-08-29
Abstract: 189,846. Hayes, A. Aug. 29, 1921. No Patent granted (Sealing fee not paid). Fixed-chamber apparatus; with counting and registering apparatus ; with expanding and contracting chambers.-Apparatus for delivering definite volumes of liquid, such as petrol, comprises a measuring vessel 1 having a reciprocable piston 3 therein, ports 4, 5 at the ends of the vessel, and an automatically operated rotary valve 7 adapted to place said ports alternately in communication with pipes 10, 13, so that liquid entering the vessel 1 at one end moves the piston and discharges the liquid from the other end. The liquid is supplied to the vessel 1 by a pump 8. The valve may be operated by the piston through slides and rack-and-pinion gearing &c. Air inlet valves 17 operated by floats are arranged in the bends of the pipes 10, 13 to prevent siphoning. The casing enclosing the apparatus is in three parts 18, 19, 20, of which the middle one 19 telescopes into the upper one. A small escape port in the centre of the cylinder indicates the action of the apparatus. A recorder 22 may oe provided to record the quantity delivered. Means are provided to arrest the action of the valve 7 when a predetermined quantity of liquid has been delivered. In one form, shown in Fig. 9, the arm 23 of the valve is controlled by catches a on a lever c engaging a recess f in a cam e. The cam e is mounted on a spindle i adapted to be turned by a knob o. A ratchet h controlled by an escapement lever k is mounted on the spindle and controls the return of the cam to engage the lever. A pointer n on the spindle indicates on a dial m the extent of rotation of the cam, which is returned by a spring g to engage the lever and arrest the valve arms 23. The capacity of the vessel 1 may be varied by adjusting the end covers.
Patent GB-501028-A (GB)
Title: Improvements in or relating to electric signalling systems
IPC: H01J1/14
Filed: 1937-08-20
Abstract: 501,028. Two-way transmission ; automatic volume control. STANDARD TELEPHONES & CABLES, Ltd., NEILSON, C. B. V., and THOMAS, P. R. Aug. 20, 1937, No. 22903. [Claas 40 (iv)] A repeater comprising pentode or like amplifying valves in the ` go ' and return ' paths is provided with voice frequency signal responsive equipment between the pentode and the hybrid coil to which the pentode output circuit is connected, the impedance of the equipment being so chosen that transmission through the repeater is not impaired and the equipment receives adequate signal power. The signal responsive equipment may be connected across the secondary of the transformer T between the pentode V and the hybrid coil HC. Alternatively, the equipment may be connected across the primary of the transformer T in place of the resistance r, to the secondary of a transformer the primary of which is in series with the pentode output circuit, Fig. 4, or to a third winding on the transformer T as at R5, Fig. 3. The signal responsive equipment may comprise an amplifier AMP, Fig. 5, connected to acceptor circuits AC1 and AC2 tuned to again control frequency and a signal-frequency respectively. Gain control signals passing through circuit AC1 operate a relay SLD1 to energize control equipment GCD. Similarly, signal frequencies operate SLD2 to energize signal recording equipment SSR. Any voice frequency current operates an echo suppressor device ES by opening the normally closed circuit at sld1, sld2 or shd. Contacts shd are operated by a relay SHD which is operated by voice-currents other than those passed by AC1 and AC2.
Patent GB-715109-A (GB)
Title: Safety devices for pressure cookers and like pressure vessels
IPC: A47J27/09
Filed: 1952-09-12
Abstract: 715,109. Pressure-relieving devices. MIDLAND METAL SPINNING CO., Ltd., and WYER, J. M. Sept. 10, 1953 [Sept. 12, 1952], No. 22905/52. Class 135 To prevent the forcible ejection from a pressure cooker &c. of a fusible plug of the kind described in Specification 708,882, a bridge-piece 16, Fig. 1, of wire or strip is embedded in the fusible metal 11 and abuts against a 'shoulder adjacent the outer end of a conical plug 10 of non-fusible metal. In a modification, the plug 21, Fig. 5, is formed with a closed end 23, metal being afterwards removed from the end by drilling, slotting &c. so that the remaining metal forms a bridge.
Patent GB-788247-A (GB)
Title: A compression refrigerating system
IPC: F25B1/10
Filed: 1955-08-09
Abstract: 788,247. Refrigerating. CKD. STALINGRAD NARODNI PODNIK. Aug. 9, 1955 [Aug. 9, 1954], No. 22918/55. Class 29 In a refrigerating system having a multistage centrifugal compressor 20, the first stage of which extracts vapour from evaporator 1 and the succeeding stages of which extract vapour through pipes 48, 38, 28, 8 from economizers or separators 46, 36, 26, 6 maintained under increasing pressures by throttle valves 45, 35, 25, 5, saturation of the vapour entering the succeeding stages is ensured by injecting into pipes 48 &c. liquid refrigerant supplied from upstream of valves 45 &c. through further throttle valves 49, 39, 29, 9. Evaporator 1 is fed from the last separator 46 through expansion valve 47 and the compressor exhausts to a condenser 3 and after-cooler 4. The Specification describes also a two-stage system, (Fig. 1, not shown), having a single economizer or separator.
Patent GB-1286784-A (GB)
Title: A cleaning tool
IPC: A47L13/16
Filed: 1971-04-19
Abstract: 1286784 Scrubbing and scouring tools; brushes; mops and squeegees SCHLEGAL MFG CO 19 April 1971 [3 Feb 1970] 23007/71 Headings A4K and A4F A cleaning tool comprises a foamed resin sponge-like block 13 mounted on a detachable mophead 10, said block having a generally plane scrubbing face 14, a generally plane scouring region 16 adjacent said scrubbing face 14 and recessed relative thereto, and a generally plane piece of coarse and stiff pile material 17 secured to the scouring region 16, e.g. by adhesive, so that the tips 18 of the pile elements are recessed relative to the scrubbing face 14, allowing the tool to be used with light pressure to move only said scrubbing face 14 over a surface 15 and to be used with heavier pressure to compress said block 13 to bring said pile material 17 into scouring contact with the surface 15, see Fig.2 (not shown). The pile elements are sparsely scattered over a woven fabric backing. A squeegee 19 on mophead 10 can also be moved over the surface 15, see Fig.3 (not shown). Two or more scrubbing faces and/or scouring regions may be provided Figs.5-7 (not shown).
Patent GB-918819-A (GB)
Title: Method of construction of prestressed concrete tanks or the like
IPC: E04G21/12
Filed: 1961-06-27
Abstract: 918,819. Prestressing concrete tanks &c. PRELOAD INTERNATIONAL Inc. June 27, 1961 [Oct. 5, 1960], No. 23190/61. Class 20 (4). [Also in Group XXIX] A method of prestressing large substantially cylindrical walled concrete structures such as tanks comprising the steps of anchoring one end 24 of a flexible tension member 12, extending along the wall from said anchored end a first length 25, continuously and uninterruptedly elongating said first length whereby a predetermined stress is developed therein, maintaining the elongation of the first length and continuously and uninterruptedly elongating along the wall a second length 30 of the member 12, and repeating this process if required upon one additional length of the member 12 or on several additional such lengths taken in succession, any given length being continuously and uninterruptedly elongated along the wall whilst the elongation of the previous length is maintained, and anchoring the final length of the member 12 after the desired total elongation thereof, the said lengths together constituting at least one convolution about the tank. The elongation of each length of the tensioning member is carried out by means of a jack 26 temporarily fixed to the wall by means of channels 20 or 21, these jacks serving also to maintain the elongation of one length whilst the next length is being elongated by a second jack 32. Rods 28 may be placed in vertical grooves 18 in the wall to reduce friction on the tension member 12. The tension member may be stranded to provide a corrugated outer surface.
Patent GB-1112528-A (GB)
Title: Automatic plant for delivering liquids
Inventor: D URSO NICOLA
IPC: E03B5/02
Filed: 1966-05-24
Abstract: 1,112,528. Water supplies. APPARECCHI MACCHINE IDRAULICHE SPECIAL I S.p.A. 24 May, 1966, No. 23238/66. Heading E1X. In a liquid delivery system, e.g. a water supply system, liquid from a source is supplied directly into the distribution piping of the system by a pump that is controlled in accordance with the air pressure in an air-containing chamber. The chamber is connected to the piping adjacent to the pump outlet through a one way valve allowing of liquid flow only from the chamber to the piping and through a throttled pipe by passing the valve. The throttled pipe allows of build up of water and air pressure in the chamber after intermittent release of small quantities of water therefrom into the piping has resulted in a predetermined pressure fall therein to start the pump. The air in the chamber is contained in a resilient waterproof bag.
Patent GB-616186-A (GB)
Title: Flow meter
IPC: G01F1/37
Filed: 1946-08-06
Abstract: 616,186. Indicating fluid flow. WEISS, F. Aug. 6, 1946, No. 23251. Convention date, Aug. 9, 1945. [Class 40 (i)] In a fluid-flow meter comprising a differential manometer connected in the usual way to a venturi tube, the legs 6, 7 of the manometer are shaped according to the equation y=1/a (#ax. #1-ax+sin-<SP>1</SP> #ax), where x, y are the vertical and horizontal components respectively and a is a constant depending on the highest differential pressure to be measured. Resistance wires 3, 4 extend axially along the legs 6, 7 from electrodes 8, 9 into the mercury or other conducting liquid 18 to support 11, 12. As the fluid flow varies and hence the liquid levels in the legs 6, 7, the resistances between the common electrode 10 and the electrodes 8, 9 vary differentially and operate a flow indicator, recorder or integrator 16 of the cross-coil or induction type in known manner. The rate of fluid flow is proportional to the square root of the differential pressure and the shaping of the legs 6, 7 according to the given relationship gives a linear relationship between fluid-flow and the indicator displacement. The tubes 6, 7 may be made of insulating material or of steel with an inner insulating lining.
Patent GB-1128696-A (GB)
Title: Process for grafting hydroxyl-group confaining polymeric materials
Inventor: CUVELIER GEORGES
IPC: D06M14/00
Filed: 1967-05-19
Abstract: 1,128,696. Graft polymers. INSTITUT TEXTILE DE FRANCE. 19 May, 1967 [20 May, 1966; 13 March, 1967], No. 23307/67. Heading C3G. A polymer containing hydroxyl groups is grafted with a monomer containing a terminal olefinic bond by treating the polymer, which has been swollen in a solution of a grafting initiator, with a monomer in the vapour state at a subatmospheric pressure which is not less than the vapour pressure, at the temperature employed for the reaction of the solution used to effect the swelling of the polymer. Suitable polymers are cellulose and its derivatives, polyvinyl alcohol and vinyl alcohol copolymers, starch, alginic acid and alginates, which may be in powder, filament or fabric form. The initiator may be activated by ultra-violet radiation. In examples, (1) to (5) cotton fabric is swollen in an ammoniacal cerium sulphate/M 2 SO 4  solution and grafted with acrylonitrile, methyl methacrylate or ethyl acrylate; (6) cellulose fabric is swollen in an ammoniacal cerium nitrate/ HNO 3  solution and grafted with n-butyl acrylate; (7) and (8) a polyvinyl alcohol or a vinyl alcohol - vinyl acetate copolymer film is swollen as in Example 1 and grafted with methyl acrylate, the resulting polyvinyl alcohol film being saponified with sodium ethylate and treated with HCl; (9) an aminated cotton fabric is swollen as in Example 1, grafted with methyl acrylate, saponified with sodium methylate and washed in acidulated water to yield an amphoteric fabric; (10) cotton fabric is grafted and saponified as in Example 9 and then treated with hexamethylene diamine. One surface only of a fabric may be grafted by deactivating the initiator present on one surface of the swollen fabric. By similar means, patterns may be produced on the fabric.
Patent GB-1397593-A (GB)
Title: Apparatus for use in forming a metal strip into a tube
IPC: H01B13/22
Filed: 1972-08-04
Abstract: 1397593 Making tubes; shearing KABELUND METALLWERKE GUTEHOFFNUNGSHUTTE AG 4 Aug 1972 [16 Aug 1971] 23329/74 Divided out of 1397592 Headings B3A and B3W In the forming from metal strip of a tube from which edge portions of the strip project radially, the edge portions are trimmed by cutter discs 1, 2, the disc 1 being opposed by a guide disc 6, and the trimmed edge portions are welded or soldered. The spacing between discs 1 and 6 is variable by means of a screw 5 and between the cutters 1 and 2 by means of the eccentric mounting of the cutter 2. A guide 7, (of e.g. polyethylene, for the tube is slit to accommodate the upstanding edge portions. At least one of the cutter discs may be wetted by an impregnation agent to prevent cold welding of the strip to the disc(s). Downstream of the cutters there may be a pressure roller to hold the strip edge portions together to guide them to the welding means (not shown), A clamp for holding the slit in guide 7 to the required width is preferably associated with a cover plate serving as a heat shield. A waste-deflector roller may be mounted above and coaxially with the disc 1. is
Patent GB-1396649-A (GB)
Title: Coking of waste kraft pulping liquors at lowered ph
IPC: C02F1/02
Filed: 1973-05-17
Abstract: 1396649 Treating spent kraft pulping liquors TEXACO DEVELOPMENT CORP 17 May 1973 23506/73 Heading D2W A process for treating spent alkaline kraft pulping liquor comprises treating the liquor with SO 2  in absorber 2 to lower the pH of the liquor to below 7, heating the treated liquor in heater 7 in the absence of air and under autogenous pressure to form coke, gasses including H 2 S, and an aqueous effluent, separating the latter products in a separator 9, burning the coke in heater 7 to produce SO 2  and adding lime and said H 2 S to the aqueous effluent in absorber 22 to form a pulping liquor for reuse. As shown, the waste liquor, which may be a black liquor of pH 12, after absorption of SO 2  in absorber 2 may be passed through heat exchanger 6 prior to entry to heater 7. The coke from separator 9 may be dewatered in cyclone 10 prior to drying in drier 11. Any smelt produced in heater 7 may be dissolved in tank 16 using effluent from cyclone 10 and the solution may be mixed with effluent from separator 9. The mixture may be causticised with lime and contacted with H 2 S-bearing gas from line 20 in absorber 21. The effluent from separator 9 may be flashed in drum 35 by depressurising with throttle valve 36 to produce a condensate in condenser 37 free from salts, which may be used to wash the coke prior to it being dried.
Patent GB-1153958-A (GB)
Title: Involute Generator
IPC: B43L11/08
Filed: 1967-05-19
Abstract: 1,153,958. Drawing appliances. TASK CORP. 19 May, 1967 [3 Oct., 1966], No. 23509/67. Heading B6P. A device for drawing involute curves comprises a frame 11 defining two mutually perpendicular non-intersecting axes 12, 13, the frame being rotatable about the axis 12 to move the axis 13 generally parallel to a surface on which the involute is to be drawn, and the axes 13 carrying a tracer member 28 which rotates about and slides freely along the axis as the frame 11 is rotated about the axis 12 with the tracer in non-slip engagement with the surface upon which the curve is to be drawn. The tracer may be an inked or leadededge disc attached to a member 28 rotatable about and slidable along a shaft defining the axis 13, and curved by end members 31 of a crosspiece 32. The shaft may be rotatable in ball-bearings in the members 31. A frame stem 15 is fixed to and extends at right-angles to the crosspiece 32, and is slotted at 17 to accommodate adjustably a pivot member constituting the axis 12. For drawing involute gear teeth, the axis 12 is positioned at the centre of the gearwheel, and the stem 15 is adjusted relatively thereto by means of graduations 24, 25 according to the involute required. The frame 11 is then rotated about the axis 12 and the tracer is moved along the axis 13 until the tracer is located tangentially on the base circle of the involute to be generated. If the frame 11 is now rotated about the axis 12 by means of handles or knobs 34, 35, the tracer will draw the required involute.
Patent GB-649706-A (GB)
Title: Improvements in or relating to the production of vitamin preparations
IPC: A61K31/59
Filed: 1946-08-09
Abstract: Vitamin preparations are recovered from livers poor in oil, especially from whale livers by extraction with edible oils or edible fats accompanied by heating or pressing the mixture of the water-containing livers with fat or oil being digested under vacuum until the water has evaporated off.  The digestion may be repeated with oil.  An example is given.
Patent GB-154029-A (GB)
Title: Improvements in bi-polar electrode electrolysers
IPC: C25B9/17
Filed: 1919-09-26
Abstract: 154,029. Hepburn, G. G., and Mather & Platt. Sept. 26, 1919. Cells; electrodes; electrolytes, circulating.-Bipolar electrode plates are separated by open-topped frames, and electrolyte is drawn off from the lower parts of the cells thus formed by passages through the electrodes or the frames. In one arrangement, ports f, Fig. 1, lead from the face of the electrode c to a cross-channel g, in one end of which a siphon tube h is fitted by means of a rubber stopper i. The other end of the channel may also be closed by a stopper i to allow cleaning. Gases may be allowed to escape from the channel g by a vertical passage k, closed at its lower end by a stopper m. In a modification, an inclined channel leads directly from the face to the edge of the electrode. In other arrangements, the electrolyte-outlet is formed in a boss in the frame, or an opening near the top of the side wall of the frame is covered by a piece o, Fig. 10, arranged so as to form a siphon pasage. The frames may be held by pegs e during adjustment of the electrodes, as described in Specification 12730/15. The lower sides of the frames may slope downwards through the outlets.
Patent GB-1101169-A (GB)
Title: A drafting device for textile fibre spinning machines
IPC: D01H5/50
Filed: 1965-06-03
Abstract: 1,101,169. Drafting - apparatus. ALPATA PATENTVERWERTUNGS A.G. 3 June, 1965 [3 June, 1964], No. 23818/65. Heading D1D. Drafting apparatus comprises, at each spinning position, two or more groups of rollers, each group comprising two pairs of rollers, the rollers of one pair being each provided with an apron, and the active run of the aprons in a group being longer than the run(s) which precede it considered in the direction in which the sliver travels; the position of each group is adjustable along guides; and the top rollers in each group are carried by a tilting arm loaded by a spring, means being provided for simultaneously adjusting the load of the upper rollers of corresponding groups at a number of spinning positions. In a preferred form, there are two groups; the front upper rollers of each group are arranged in pairs joined by a common shaft 28 or 75 and supported in a tilting arm 32 or 76, while the corresponding lower rollers 24 or 72 are continuous throughout the machine. Connected to each arm 32 or 76 is a hook 46 or 86 embracing a tie-bar 48, 88 connected by a threaded, adjustable connector 49, 89 to a loading-spring 50, 90. The loading at individual groups can be adjusted by turning the connector 49, 89; the loading of corresponding groups at a number of spinning positions can also be simultaneously adjusted. To this end, the springs are each connected to one arm of a bell-crank pivoted at 94, Fig. 2, to a fixed part. The other arm of each bell crank of the corresponding groups at a number of spinning positions is connected to a common bar 100 mounted to slide in fixed guides, e.g. 102, Fig. 1, one end of the bar is threaded into a nut 106 integral with a worm meshing a wheel which can be rotated by a handle applied at 116, so that the position of the bar, and hence the loading of all the upper rollers can be varied, markings 105 indicating the value of the loading. Each group comprises a double apron 16, 18 or 56, 58. The aprons 16, 18 are each trained around a roller and a nose bar: of the aprons 46, 58 the lower one is trained around rollers 52, 56, is tensioned by a roller 64, and supported by a plate 62, while the upper one is trained around a roller 54 and a nose-bar 66 tensioned by a rod 68 pivoted on roller 54 and acted on by a spring 70. The front upper rollers in each group are caused by a hook 30 holding the neck between the twin pair by a ball-catch. Fig. 3, not shown. The hook 46 or 86 supporting the tie-bar 48 or 88 is carried by a sleeve eccentrically mounted in the corresponding tilting-arm and adapted to be rotated by a handle 44 to lower the hook and relieve the loading so that the lifting-arm can be raised.
Patent GB-185426-A (GB)
Title: Electric switch as applied to time switches in particular
IPC: H01H1/26
Filed: 1922-09-02
Abstract: 185,426. Landis & Gyr Akt.-Ges. Sept. 3, 1921, [Convention date]. Retractive switches; switches, quick-action. - A switch, particularly adapted for operation by time and other automatic mechanism has its movable contacts mounted on current-carrying springs which are controlled by a member moving between the springs and the base-plate. As shown in Figs. 1 and 2, the spring strips 6 are fixed by screw bolts 4 to recesses in the base-plate and their outer ends, which carry contacts 7, are bent back so as to tend to make contact with fixed contacts 2. The controlling member 9 is pivoted at 8 and has a lever arm 9<1> to which motion is transmitted by a rod 10. The rod 10 and lever 9' are coupled together by nuts 12 on the rod and a bush 11 situated between the nuts and passing loosely through a hole in the lever. As shown in Fig. 4, the opening movement of the switch is assisted by an adjustable spring 15 which moves over dead centres. One end of the spring 15 is fixed and the other is attached to an extension 16 of the rod 9.
Patent GB-243658-A (GB)
Title: Improvements in goggles
IPC: A61F9/02
Filed: 1925-09-25
Abstract: 243,658. Knott, W. S. Sept. 25, 1925. Goggles. - Goggles are ventilated by suction produced during movement of the wearer by the passage of air past shield pieces fitted on the side edges of the frames. The fabric shield 2 of the goggles is provided with holes 5 at the sides, which are covered by projecting shields 6 secured to the frames 1. During movement of the wearer the suction induced at the rear of the of the shields 6 exhausts the air in the goggles through the holes 5, such air passing out between the fabric shield 2 and the additional shields 6.
Patent GB-1219827-A (GB)
Title: A gas turbine engine
Inventor: COPLIN JOHN FREDERICK
IPC: F02K3/06
Filed: 1968-05-20
Abstract: 1,219,827. Gas turbine ducted fan engines. ROLLS ROYCE Ltd. May 13, 1969 [May 20, 1968], No.23976/68. Heading F1J. [Also in Division F2] A gas turbine ducted fan engine comprises a compressor 12 and turbine 14 mounted on a mainshaft 16 and a centrifugal clutch 27 for connecting a ducted fan 24 to the main shaft. The engine shown is a front fan type engine having combustion equipment 13. The ducted fan 24 is disposed upstream of the compressor 12 and may be connected to the shaft 16 by the clutch 27. The fan 24 is disposed within a casing 22, part of the air from the fan passing to the compressor 12 and part passing to a by-pass duct 23. Air inlet openings 25 may be formed in the casing 22 to provide an auxiliary intake for air flowing through the by-pass duct. The engine may be used in an aircraft to drive auxiliary equipment such as an alternator or as a booster engine to boost take-off thrust with the ducted fan operative.