baber/WOPTO huggingface dataset:
Patent GB-1354080-A (GB)
Title: Vibrator apparatus
IPC: C12Q1/37
Filed: 1972-05-03
Abstract: 1354080 Vibrators APPLIED POWER INDUSTRIES Inc 3 May 1972 [20 May 1971] 20668/72 Heading F2X A vibrator apparatus adapted to impart vibrations to a body, e.g. a motor vehicle for the detection of rattles, includes a base-plate 4 with a tubular member 3 attached thereto at one end to create a fluid chamber 7. A ram piston 5 is mounted in sliding relationship within the chamber 7 and is operatively connected to a vibrator piston assembly. The other end of the tubular member 3 is adapted to receive the vibrator piston assembly to which is attached a saddle 26 having a bearing surface 27 to contact the body to be vibrated. Fluid pressure is introduced into the chamber 7 between the base-plate 4 and the ram piston 5 whereby the latter together with the vibrator piston assembly is raised to cause contact with a predetermined force between the bearing surface 27 and the body to be vibrated. Thereafter, the fluid pressure within the chamber 7 causes the vibrator piston 40 to reciprocate and impart a desired amplitude and frequency of vibration to the body to be vibrated. The piston 40 slides upon a central conduit 10 when reciprocating between the ram piston 5 and a static piston 11 supported on the upper end of the conduit 10. Ports 36, 37 in the conduit 10 provide communication between the fluid chamber and, alternately, the passages 42, 43 and 45, 46 in the piston 40 leading to the spaces between the ends of the piston 40 and the ram piston 5 and the static piston 11, respectively. As piston 40 is accelerated away from the ram piston 5, the pressure between the piston 40 and the static piston 11 is exhausted via ports 39 in the conduit 10, exhaust passages 50 in a spacer 25 disposed between the piston 11 and the saddle 26, and the clearance 30 between a cover tube 28 and the tubular member 3. A muffler 60 (e.g. of foam material) is introduced into the clearance 30 to reduce the sound level. On downward movement of the piston 40, fluid is exhausted through ports 51 in the wall of a cylinder 20 surrounding the piston 40 and a port 52 in the tubular member 3 adjacent the muffler 60.
Patent GB-182344-A (GB)
Title: Improvements in and relating to warning signals for tire deflation
IPC: B60C23/04
Filed: 1921-08-03
Abstract: 182,344. Hafelfinger, F. E. Aug. 3, 1921. Puncture or deflation, indicating. - A device for indicating fall of pressure in a tyre comprises a member carried by the valve-stem and another fixed with respect to the wheel rim, relative movement between these members serving to operate a whistle, bell, light or other signal. In the construction shown, a whistle 20 screwed on the end of the valve stem 14 is actuated when a rod 22 is depressed to displace the valve-pin 19. The whistle carries a sleeve 24 fitted within a casing 28, relative movement between the parts 24, 28 being set up on deflation of the tyre by means of a spring 23 fitted under the valve-plate 17. When the valve-stem 14 is thus moved, a lever 34 pivoted on the sleeve 24 is rocked about a pin 36 carried by the casing 28 to depress the rod 22 and open the valve. The lever 34 is normally held in the inoperative position by a spring 29 housed between guide-screws 51 on the casing 28 and lugs 46 on the sleeve 24. To adapt the device for different types of wheel rims, the casing 28 is adjustably secured in a fixed tubular member 31 by means of a screw and nut 37, 32. By loosening the nut 32, the device may be rendered inoperative.
Patent GB-583948-A (GB)
Title: Improvements in or relating to apparatus for raising concrete shuttering or mould-boards
IPC: E04G11/24
Filed: 1943-12-10
Abstract: 583,948. Casting concrete &c. in situ. BRADBURY & SONS, Ltd., J., and POWELL, A. D. Dec. 10, 1943, No. 20676. [Class 20 (ii)] Consists in improvements in apparatus for raising shuttering used in casting walls &c. in concrete or the like, of the kind in which horizontally spaced slides (one of which is shown at 2) from which a carrier for the shuttering is suspended are levered up vertical guides 1 in steps, as the casting proceeds, by friction-ratchet mechanism. Each slide 2 is associated with a pair of levers 12, 12a, pivoted thereto at 13, each lever being forked and being connected by a pivot 10 or 10a to links 8 which are pivoted at their upper ends to apertured gripping plates or jaws, 6, 6a. These, when in the inclined positions shown, frictionally engage the post 1 so as to take the weight of the slide 2 and the members supported thereby. A compression spring 15 is located between the top of the slide and the jaw 6a, and a torsion spring 16 is provided to keep the jaw 6 normally in gripping position. A removable handle 18 may be applied to either of the levers 12, 12a, and handles 19 are attached to the jaws 6, 6a. When the lever 12 is depressed, the slide 2, spring 15, and jaw 6a are lifted. Then, on raising the lever, the slide, spring and jaw 6a keep their raised position and the fulcrum 10 is raised, so that the jaw 6 scales the post 1 by one step. This action may be repeated as often as required, thus raising the slide 2 and the shuttering step by step. If the lever 12a is depressed, the slide and shuttering rise, the spring 15 being compressed, but the jaws 6, 6a remain stationary, so that when the lever is released the slide and shuttering sink to their original position. By this means the shuttering may be operated as a "float" or smoother. Lowering of the shuttering is effected by depression of the levers 12, 12a and of the handles 19, in appropriate sequence, or by simultaneous depression of the handles 19. The bottom of the slide 2 has a flange 3 of part-spherical form, which supports a socket or bracket 5 from which the shuttering- carrier (not shown) is suspended. By this means a joint is provided which enables the slide and the members attached to it above the shutter to be rotated independently of the shutter. Thus, the slide may be turned so that the levers projecting from it can clear any obstructions, and further, limited universal movement of the shuttering carrier in relation to the slide is permitted.
Patent GB-808145-A (GB)
Title: Method and means for blowing gases possibly carrying pulverulent material into a bath of molten metal
IPC: C21C7/00
Filed: 1956-07-04
Abstract: 808,145. Foundry ladles; steel refining. INSTITUT DE RECHERCHES DE LA SIDEKURGIE. July 4, 1956 [July 5, 1955], No. 20697/56. Classes 72 and 82(1) Gases, or gases carrying pulverulent material, are blown into molten metal in a ladle, without using a lance, by injecting the gas directly through a closable orifice in the base of the ladle. As shown in Fig. 1, the base of the ladle 2 is fitted with a frusto-conical refractory nozzle 1 which is closable by a refractory plug 3 carried by a high-tensile wire or a spring-urged rod 4 which can be released suddenly by removal of a key 6, the rod 4 passing through a small opening in a gas pipe connection 12, which opening is closable by a flap valve 14. The nozzle is secured in position by means of studs 11, keys 10, a plate 9 and a packing 20 of a plastic material such as thick pitch or aluminous cement. The nozzle may be made of graphite, chromite, chamotte, magnesia or highly aluminous refractories, and it may have a single central channel or a number of parallel, upwardly diverging or helically arranged channels which may be metal lined. A cover 21 may be provided. In the form shown in Fig. 7 the nozzle 1 is closed by a pad 15 carried by a rod 16 which passes through a slot 22 in a cover 21 carried by a fixed arm 23. The ladle may have a conical bottom with a central or eccentric opening, and the Specification describes modifications of the engaging surfaces of the nozzle and plug. The invention is stated to be particularly applicable to the desulphurization of liquor pig iron by injecting pulverulent lime in a current of nitrogen or other non-oxidizing gas.
Patent GB-1291737-A (GB)
Title: Backsizing carpets
IPC: D06N7/00
Filed: 1970-04-29
Abstract: 1291737 Backing carpets E I DU PONT DE NEMOURS & CO 29 April 1970 [29 April 1969 10 April 1970] 20702/70 Heading B2E [Also in Divisions B5 and Dl] Carpets are made by applying to a tufted fabric a solution, dispersion or melt having a viscosity of 2,-2000 cps of precoat adhesive which is solid at room temperature and subsequently applying a hot melt adhesive composition. A secondary scrim may be adhered thereto (see Division B5). The pre-coat adhesive may comprise starch, casein, rosin derivatives, waxes or homopolymers or copolymers of olefins, compounds containing a vinyl group, esters having olefinic unsaturation amides, a wide variety of suitable polymers being specified. The hot melt adhesive composition preferably has an application viscosity of 5000-50,000 cps and is suitably a polyethylene, a copolymer of ethylene with vinyl acetate, acrylates or methacrylates or compositions described in Specification 1249611. Fillers, waxes and extenders may also be incorporated. In an embodiment a tufted structure 10 is drawn over a roll 14 dipping in a reservoir of a pre-coat adhesive and then contacted with a coating roll dipping in a reservoir of the hot melt composition. Rolls above the coating roll ensure good contact and the thickness of the coating is controlled by a doctor blade. The adhesive is cooled and the carpet is passed to a tenter frame and cooler. The tufted fabric suitably comprises nylon or polypropylene fibres in a jute or polypropylene backing.
Patent GB-639672-A (GB)
Title: Papermaking process
IPC: D21F1/46
Filed: 1947-07-31
Abstract: 639,672. Fourdrinier paper-making machines. SPENCER, J. A. July 31, 1947, No. 20717. Convention date, April 12, 1940. [Class 96] In making paper on a Fourdrinier machine a dandy roll 30 is positively rotated from a driving part of the machine, e.g. from a couch roll drive shaft 16, through gear boxes 60 and 84, so that the peripheral speed of the dandy roll 30 bears a constant relation to and is slightly, e.g. 1¢ to 4 per cent, in excess of the speed of the wire. The descriptive matter of this Specification is largely the same as that of Specification 639,669.
Patent GB-1456752-A (GB)
Title: Catalyst and process for the production of unsaturated carbonyl  compounds
IPC: C07C45/35
Filed: 1974-05-10
Abstract: 1456752 Oxidation catalysts JAPAN SYNTHETIC RUBBER CO LTD 10 May 1974 [10 May 1973 2 April 1974] 20736/74 Heading B1E [Also in Divisions C2 and C5] Catalysts comprise a compound oxide of molybdenum, antimony, bismuth, iron and cobalt. They may also contain oxides of Li, Na, K, Rb, Gs, Cd, Al, Tl, Zr, Sn, Pb, Cr, Mn and/or Ni and may be supported on a carrier. They may be made by evaporating to dryness a solution containing compounds of the active elements, thermally decomposing the residue, grinding, mixing with the carrier and calcining, although Zr may be added as the oxide.
Patent GB-836017-A (GB)
Title: Photographic enlarging apparatus with automatic focusing device
IPC: G03B27/34
Filed: 1956-07-04
Abstract: 836,017. Photographic enlarging apparatus. AGFA A.G. July 4, 1956 [July 8, 1955], No. 20755/56. Drawings to Specification. Class 98(1) On replacing an interchangeable objective of an enlarger having automatic focusing with an objective having the same focal length, the negative plane or the positive plane is displaced other than by the automatic focusing arrangement through a distance equal to either the difference between the internodal distances of the objectives or their sum. A normal objective may then be replaced by a same focal length wide angle objective for the enlargement of documents without necessitating any alteration in the automatic focusing mechanism.
Patent GB-997887-A (GB)
Title: Electrolysis of alkali metal chloride solution
IPC: C25B11/10
Filed: 1963-05-24
Abstract: <PICT:0997887/C6-C7/1> Aqueous alkali metal chloride solution is electrolysed at a pH below 5 in an alkali-chlorine cell using as anode having a Pt surface which has been pre-treated by subjecting it to cathodic electrolytic action.  Typically a sodium chloride brine heated to a temperature between 20  DEG C. and its boiling point is electrolysed at a pH above 1, e.g. 3.5, using a pre-treated anode or Pt or W, Al, V, Nb, Pd or preferably Ti or Ta coated with a layer of at least 3m  inches of Pt, the coating thickness for a Pd base being at least 100m  inches.  The pre-treatment may be effected in a separate cell and the treated anodes may be stored before use. Alternatively the anode may be connected briefly, e.g. for 10 seconds, as cathode in the brine cell in which it is to be used for alkali-chlorine production. As shown, the brine cell comprises cylindrical glass tanks 1 and 3 connected by a cylinder 2 containing a diaphragm 12 of asbestos, sintered glass, or asbestos impregnated with a polymer of maleic acid or its anhydride with divinyl benzene and/or styrene.  The brine is introduced into the anode compartment 1 which contains a platinum-coated anode 4 with a platinum connector rod 5 encased in a glass tube 6 and a heater 13 while compartment 3 contains a platinum or steel cathode and a glass catholyte withdrawal tube 14.  If polarity reversal is employed for anode conditioning a voltmeter can be arranged to signal a rise of say 1% in cell voltage and automatically initiate polarity reversal. Specification 917,879 is referred to.
Patent GB-1282411-A (GB)
Title: Oil-sink cements
Inventor: NUTT WILLIAM OWEN
IPC: C02F1/68
Filed: 1968-05-02
Abstract: 1282411 Treating oil pollution; cement CEMENT MARKETING CO Ltd 31 July 1969 [2 May 1968] 20815/68 Headings C1C and C1H A composition for treating oil polluted water comprises a powdered cement the particles of which have been rendered hydrophobic by a coating of an oleophilic material insoluble in water. Portland cement, high alumina cements, blast furnace cements or lime-pozzolara cements may be used. The coating material may be a natural or synthetic fat or oil which may have free carboxyl groups, a fatty acid such as stearic acid or oleic acid, or a cationic surfactant. Stretches of oil-polluted water may be treated by distributing the composition on the water in the form of an airborne spray. The composition may also be added to oil-contaminated water in the tanks of ships prior to discharge of the water.
Patent GB-323456-A (GB)
Title: Improvements in mixing and kneading machines
IPC: B01F9/00
Filed: 1929-07-08
Abstract: 323,456. Artofex Engineering Works, Ltd. June 13, 1929, [Convention date]. Rotary mixers.-A mixing or kneading machine comprises a container rotating about a longitudinal axis with a rotating beater projecting through one wall at an angle to the axis. The container may be tilted about a transverse axis for discharging and the axis of the beater may be fixed or roll round a conical path. Fig. 1 shows a form in which the container 1 is rotated by a motor 10 and worm gear 12, the shaft 2 of the container being axially bored for supplying liquid, or placing the container under positive or negative pressure. The container has a feed and discharge door 16. The beater 8, shaped to the contour of the container, is carried on an inclined shaft 7 projecting through a bearing 6 and driven through worm gearing from a separate motor 13. The container is mounted on a stirrup-shaped horizontal frame supported on legs 17 enabling the container to be discharged into a vessel placed below. In another form the container and the beater are driven from the same source by chain and pinion gearing, and the container is set to one side of the base so that a vessel can be placed underneath the discharge opening. In a further form the container is cylindrical and is carried by bearings on a pedestal and arms projecting therefrom. Figs. 8 and 10 show a form in which the container can be tilted for discharge and the axis of the beater rolls in a conical path round the axis of the container. For this purpose the container, having a door 54, is carried in a frame 52 mounted in transverse bearings 53 and can be tilted by means of hand-operated worm gearing 68, 69, 70. The container is rotated from a motor 21 by chain and worm gear 58, 61, 64, 65, and the beater shaft 7 is fitted with a bevel gear 67 in mesh with a fixed bevel 66.
Patent GB-1046214-A (GB)
Title: Device for disconnecting a glow discharge vessel
IPC: H02M1/06
Filed: 1964-05-21
Abstract: 1,046,214. Glow discharge vessels. ELEKTROPHYSIKALISCHE ANSTALT BERNHARD BERGHAUS. May 21, 1964 [May 24, 1963], No. 20991/64. Heading H2H. [Also in Division G1] A circuit for extinguishing arcs in a glow discharge vessel comprises an inductor L in series with the vessel in which counter E.M.F. is induced either conductively or magnetically through an additional winding 18 tightly coupled to the choke. The circuit is switched by a transistor 15 or controllable gas discharge tube, fired by a photo-electric cell or a plurality of cells 11 responsive to different spectral bands connected to a coincidence circuit 12, or other environmental devices, the outputs being suppressed below a determined threshold value. In a vessel fed from an A.C. source the additional winding is fed from the same source.
Patent GB-492785-A (GB)
Title: Improvements in or relating to pressure gauges
IPC: G01L7/18
Filed: 1937-07-29
Abstract: 492,785. Pressure gauges. GAS LIGHT & COKE CO., and AUSTEN, C. R. July 29, 1937, No. 20995. [Class 106 (ii)] A pocket gauge comprises a U-tube 8 completely enclosed in a casing 6, 7 having a transparent front face and carrying at its upper end two protruding open-ended nipples 15, 16 each of which is connected within the casing to an open end of the U-tube, a sealing device 21 being mounted externally of the casing and adapted to be held under spring pressure against the nipples. The sealing device is provided with a rubber lining 23 and is carried by a rod 24 passing through the top of the casing between the nipples and surrounded by a coiled spring 25. When required for use, the plate 21 is lifted against the influence of the spring 25, twisted, and dropped between the nipples. One nipple is then connected by rubber tubing to the point at which the pressure is to be measured. When the pressure has been read, the gauge is disconnected and the sealing device replaced. The scale may be attached to the back of the casing by a pin-and-slot device so that it is adjustable within limits relatively to the level of the liquid in the tube.
Patent GB-1109291-A (GB)
Title: Process for the production of potassium monopersulphate
Inventor: MUELLER ROLF
IPC: C01B15/08
Filed: 1965-05-18
Abstract: Potassium monopersulphate is produced continuously by reaction of sulphuric acid, containing sulphur trioxide, with an aqueous solution of hydrogen peroxide and dilution of the reaction mixture with water, the reaction and dilution taking place in rotating, cylindrical vessels, which are arranged with their axes horizontal and are provided with cooling jackets, both vessels being closed at one end and provided with annular weirs at the other end and both vessels rotating about their horizontal axes, after which the pH of the acid solution obtained is adjusted to 2-3.5 with aqueous potassium hydroxide and/or potassium carbonate.  Both vessels may be combined within a single cooling jacket, the reaction mixture flowing over an annular weir from the reaction to the dilution vessel.  The initial reactants and water for dilution may be supplied separately through one or more nozzles per reactant, which nozzles dip into the reaction mixture and the mixture to be diluted.  Treatment with aqueous potassium hydroxide and/or potassium carbonate may be in a separate vessel equipped with intake, overflow, agitator and feed nozzles. Alternatively this treatment may be carried out in a vessel similar to those used for reaction and dilution and may be combined with the reaction and dilution vessels in a single cooling jacket.  Solid potassium monopersulphate may be obtained from the final solution by spray or vacuum drying.
Patent GB-1424635-A (GB)
Title: Pipe couplings
IPC: F16L29/00
Filed: 1974-05-13
Abstract: 1424635 Pipe couplings SUNDSTRAND CORP 13 May 1974 [23 Jan 1974] 21029/74 Heading F2G A pipe coupling comprises a first coupling member 10 having a body member 12 comprising an inner tube 19 and an outer externally screw threaded portion 17 sealed at its outer end by a diaphragm 18 which is soldered or brazed into place and incorporating a resilient gasket whose external annular rib locates into an annular groove in the internal wall of body member 10, and a second coupling member 11 having a body 13 comprising a socket, into which a sleeve 20 fits on assembly, sealed by diaphragm 26 which is similar in construction but is larger than diaphragm 18, and a rotably mounted union nut 27 internally screw threaded so as to engage with sleeve 17 of body 10, the body 13 also having an internal shoulder 36 on to which the edge 21 of the tube 19 seats on assembly. Assembly of the joint is performed by tightening of the union nut 27 drawing body members 12 and 13 together, rupturing the diaphragm 18 on body member 12, this rupturing being caused by the pressure of the edge of the tube of body member 13 upon diaphragm 18 and assisted by the inclusion of two diametrical orthogonal scorings on the surface of the diaphragm, and on further tightening of the nut the similarly scored diaphragm 26 is also ruptured by pressure of edge 21 of inner tube 19 thereupon and tightening is continued until the edge 21 of the inner tube 19 is firmly seated on shoulder 36 forming a metal-to-metal seal. A charging port 30 with a valve 31, protrudes from body member 13 and is connected thereto by a radial bore.
Patent GB-221515-A (GB)
Title: Improvements in machining the blades of hydraulic turbine runners
IPC: B23B5/00
Filed: 1923-04-05
Abstract: 221,515. Moody, L. F. July 29, 1922, [Convention date]. Screw propellers. -Runner blades for hydraulic turbines are each formed as a sector of the same cone and are machined by an arrangement wherein the blades are detachably mounted upon a hub which is adapted to be rotated about an axis inclined to the hub axis. Each blade 20 of a runner R, Fig. 3. is carried on a separate conical section 23<1>, detachably mounted on a central hub portion 24. The hub is supported by a mandrel 25 mounted on wedge blocks 27 on the table 28 of a boring-mill so that the runner axis r r is inclined to that of the table. The surface 21 is then machined by rotating or oscillating the table and feeding the tool 29 along the conical pitch surface. The rear blade surfaces are machined in a similar way by inverting the runner on the mandrel. In a modification a number of blades 20 and their hub sections 23<1> may be held in a special fixture on the table at the desired angle as shown in Fig. 8, and machined simultaneously by a rotary movement. The inner portions of the blades adjacent the hub may be hand finished. A geometrical method of determining the conical forms of the blade and hub is described in the Specification.