baber/WOPTO huggingface dataset:
Patent GB-1347396-A (GB)
Title: High extraction magnetic separator
IPC: B03C1/025
Filed: 1971-04-19
Abstract: 1347396 Magnetic separators J M HUBER CORP 19 April 1971 [13 March 1970] 25116/71 Heading B2J Apparatus for effecting high efficiency collection of magnetic particles contained in aqueous slurries comprises a flow path for the slurry through a magnetic field of at least 5000 gauss, said path including a container 7 filled with elongate ferromagnetic element and positioned between pole pieces 2. A magnetic field of 20,000 gauss is provided by an electromagnet having the coils 2 which are preferably water cooled and ferromagnetic sections 3-6 surrounding a cylindrical cavity 28 housing one or more canisters 7 made of stainless steel or PVC. The space within the canister 7 is packed with steel wool and baffles &c. to provide the collecting surface material. Slurry, for example a dispersion of crude kaolin clay in water, is pumped into the canister through a pipe 8 and fed away through a pipe 11. Conical connections such as at 33, 34 and pebbles 36 are provided to distribute the flow throughout the canister. Periodically the canister is back flushed first at low pressure with the magnetic field still on to remove collected non-magnetic particles (middlings) and then at high pressure with the field switched off. A system of control valves for the above cycles of operations is described with reference to.Fig. 3 (not shown). (For Figure see next page)
Patent GB-462334-A (GB)
Title: Improvements in and relating to apparatus for delivering measured quantities of liquid
IPC: B67D7/16
Filed: 1935-09-10
Abstract: 462,334. Liquid-meters. BAIESI, S. H. Sept. 10, 1935, No. 25158. Convention date, Sept. 19, 1934. [Class 69 (i)] [Also in Group XVIII] Apparatus for delivering liquids in predetermined quantities comprises two measuring containers, distributing valves operated by the overflow of excess liquid from the containers, setting means for determining the quantity to be delivered, means for restoring the setting means to initial position, and means for closing an inlet valve when the predetermined quantity has been delivered. In order to set the apparatus ready for delivering a predetermined quantity of liquid, a key 139, Fig. 8, is used to set a pointer 142 on a dial 138, a drum 119 loose on a shaft 101 being simultaneously turned to a corresponding position, and a cam disc 129 acting through a lever 108 and rod 112 to open a valve 59, Fig. 1, so that liquid delivered from a pump 20 can pass through a pipe 51, Fig. 2, a tank 16, a pipe 51, the valve 59 and pipes 55, 57 to one of the measuring chambers 6, 7. When the chamber is full, the overflow passes down a pipe 35, Fig. 7, pipes 154, 157 allowing separated air to escape, to one or the other of a pair of containers 37, 38 in a tank 15 having a return 19 to the supply reservoir. The containers 37, 38 are connected by rods 39, 40 and links to the opposite ends of a lever 106 on the shaft 101, so that the descent of a filled container rocks the shaft in one direction or the other. At the end of its descent, a pin 50 opens a valve 49 and allows the container to empty. The shaft 101 operates a shaft 68, Fig. 4, through a lever 100 connected to rods 98, 99, joined by a chain 97 passing over a toothed wheel 95 on the shaft 68. The initial movement of the shaft 68 acts through a pinion 82 and toothed segments 81, Fig. 6, to close the discharge valve 76, 77 of the empty measuring chamber 6 or 7. Next, a notch 93 acts through engagement with a projection from a lever 92 to turn a sleeve, so as to close the inlet valve 65 or 66, Fig. 3, of the filled chamber and open that of the empty chamber. Finally the discharge valve of the filled chamber is opened. Should the discharge chamber not be empty, a projection 168 carried by a float 165 engages a sector 84 and prevents movement of the shaft 68. The measuring chambers have additional inlet valves 63, 64 connected by levers with their discharge valves. The movement of the shaft 101 also acts through pawls to return the drum 119 cam disc 129, and pointer 142 through one step towards their initial or zero positions and recesses on the drum periphery act through a lever 146 on a counter 144. The action continues until the predetermined quantity has been delivered, when the counterweighted lever 108 falls into a recess in the cam disc, and the valve 59 is closed. Leakage liquid returns to the supply tank through pipes 177, 179 and tank 15 ; when delivery has ceased, the liquid remaining in a measuring chamber and its supply pipes also return through a pipe 173 and the tank 15.
Patent GB-752987-A (GB)
Title: Improvements relating to thermal control means for electrical heating devices, particularly cooking receptacles
IPC: H05B1/02
Filed: 1954-08-31
Abstract: 752,987. Thermal switches. GENERAL ELECTRIC CO. Aug. 31, 1954 [Sept. 3, 1953], No. 25287/54. Class 38(5) [Also in Group XI] The heating elements of a liquid heater, eg. a coffee percolator, are controlled by a switch comprising an adjustable cam operating the contacts and spring-biased to an off position, a series of teeth of different heights on the cam adapted to be engaged by the end of a bimetal element so as to hold the cam against its bias until a predetermined temperature is reached at which the bimetal releases the cam. The latter is formed on the edge of a disc 17 and acts on three contact blades 19...21 inherently biased to open position. The teeth a...d are of progressively greater height and are engaged by the end of a bimetal 28 secured to a frame 14 in thermal contact with the percolator. The cam 17 is rotated clockwise manually to close contacts 25a, 25b, 26a, 26b, on blades 19...21 so that a tooth b, c or d, is under the end of the bimetal, depending on the desired temperature. The cam 17 is thereby held against the action of its biasing spring 24, and heating elements 7...9 are energized. At a predetermined temperature, element 7 is de-energized by the opening of contacts 33 by a bimetal 33a, and a higher temperature (as set by cam 17), the bimetal 28 releases the cam so that blades 19...21 separate, to disconnect the element 8. Element 7 may be energized independently of element 8 for re-heating purposes by turning the cam so that tooth a is energized by bimetal 28, thereby closing contacts 25a, 25b, but not 26a, 26b.
Patent GB-334690-A (GB)
Title: Improvements in portable gramophones
IPC: G11B33/02
Filed: 1929-08-20
Abstract: 334,690. Toulson, M. P. Aug. 20, 1929. Cases.-Gramophones provided with a record receptacle constructed or mounted i n the hinged lid, have the lid or the outer flange thereof additionally hinged to open out away from the mouth of the receptacle, to facilitate access to the records. As shown, the record receptacle 2 is built to one side of the lid so as to leave a space over the tone-arm when the lid is closed, and the lid has a further transverse hinge 4 adjacent to the mouth 5 of the receptacle. Alternatively, the flange 7 of the lid may be hinged. The arrangement is applicable also to combined gramophones and wireless receivers.
Patent GB-810481-A (GB)
Title: Improvements in or relating to processes for recovering solid ammonium sulphate from aqueous solutions thereof
IPC: B01D9/00
Filed: 1955-09-05
Abstract: Coarsely crystalline ammonium sulphate is recovered froman aqueous solution thereof by saturating the solution with gaseous carbon dioxide and ammonia in stoichiometric proportions for ammonium carbonate at such a temperature that no precipitation of (NH4)2SO4 takes place, and then cooling the solution to a temperature not below that at which (NH4)2CO3 begins to crystallize, and separating the (NH4)2 SO4 crystals precipitated from the mother liquor.  The sulphate solution is saturated with ammonia and carbon dioxide and at 60 DEG  C., when the vapour pressure of CO2 and NH3 in the solution equals the gas pressure applied, gas introduction is stopped, and the solution is cooled to crystallize (NH4)2SO4, but not cooled below 20 DEG  C., at which temperature carbonate is precipitated. Free-flowing non-caking pseudohexagonal prisms of uniform shape and size are preferably obtained, if the saturation of the sulphate solution and crystallization of sulphate are effected as separate steps, by keeping the temperature during saturation at that value at which the solution is just saturated with sulphate. The saturation and crystallization may be effected in the same or separate vessels, and it is preferred to employ a crystallizer equipped for mother liquor recirculation.  The saturation and crystallization steps may be repeated, until carbonate precipitates immediately on cooling, to obtain highest yields of sulphate, or alternatively, mother liquor from a previous crystallization may be added to the sulphate solution in such proportion as to obtain a mixture having such a high content of ammonium carbonate that a single saturation followed by crystallization will give a minimum sulphate content in the solution at the crystallization temperature.  The NH3 and CO2 may be introduced at 0.5 kg/sq. cm. above atmospheric pressure.  The solution of carbonate, after separation of the sulphate crystals, may be reacted with calcium sulphate, e.g. gypsum or anhydrite, the resulting mixture is filtered to remove calcium carbonate, which is washed with water, and the combined filtrate of ammonium sulphate solution and washings may be added to the (NH4)2SO4 solution before saturation with NH3 and CO2.  The separated (NH4)2SO4 crystals may be washed with an (NH4)2SO4 solution preferably a pure saturated solution.  It is advantageous to combine this precipitation process with a usual evaporation crystallization to obtain substantially equal quantities of sulphate from each process, to reduce the amount of water evaporation necessary, and to balance the water used.
Patent GB-711134-A (GB)
Title: Improvements in and relating to valves for dispensing liquids
IPC: B67D1/14
Filed: 1950-10-19
Abstract: 711,134. Mannally-actuated valves. COLLINS, A. F. Jan. 18, 1952 [Oct. 19, 1950], No. 25506/50. Class 135 A liquid dispensing valve comprises a casing having an inlet 3 and fine and coarse outlets 9, 8 respectively, in which a spring-loaded shuttle lift valve 11 operated, e.g. by a lever 21 and adjusting screw 22, normally closes the inlet but on initial movement away from the inlet seat 10 allows liquid to flow through both outlets, and on closing on an opposite seat 15 allows liquid to pass only through the fine outlet.
Patent GB-835949-A (GB)
Title: Improved polymer recovery process
Filed: 1957-08-13
Abstract: Normally solid polyolefins are separated from the solution in a volatile solvent by flashing the solution in an atmosphere of an inert gas at above the melting-point of the polymer but below the temperature at which the polymer becomes fluid.  By "meltingpoint" is meant the temperature, and temperature range, at which the cooling curve of the polymer exhibits a plateau or inflection point. Specified polymers are those of ethylene, propylene, 1-butene, 1-pentene, 2-butene, butadiene, their copolymers and polystyrene. The solvent is preferably a naphthenic or paraffinic hydrocarbon having from 3 to 12 carbon atoms.  Preferably the polymer solution is introduced into the flashing zone as a dispersion, super-heated steam introduced so as to strip solvent and light waxes from the polymer, and the polymer cooled to below its softening temperature using saturated steam.  The solid polymer may be chopped and treated with a heated non-oxidizing gas to densify the polymer.  The polyolefin may be prepared in the presence of a catalyst comprising chromium oxide associated with at least one of silica, alumina, thoria and zirconia. Apparatus for carrying out the process is described.
Patent GB-605887-A (GB)
Title: Improvements in or relating to tubular glassware forming apparatus and element for use in such apparatus
IPC: C03B17/04
Filed: 1945-10-02
Abstract: 605,887. Glass manufacture. DANNER, E. Oct. 2, 1945, No. 25520. [Class 56] Apparatus for drawing or extruding glass tubing has a shaping element comprising a plurality of members one within another, having interengaging supporting means, and providing a plurality of spaced coaxial paths by which molten glass may be discharged to form the tubing. Fig. 5 shows one form of shaping element mounted on the lower end of a blow-pipe 47 and fed with molten glass through an annular passage 51; the element comprises a tube 60 supported on a refractory block 57 by spacing blocks 62 (see Fig. 12) which engage shoulders on the tube and block; glass flows over the inner and outer surfaces of the tube 60. The tube 60 may be replaced by a hollow cone supported from a frustumal block, or by a number of metal shells 88 and a refractory ring 90 (Fig. 8a). Fig. 11 shows a shaping element mounted on the end of a tube 107 forming a continuation of the outlet 51: an annular member 105 co-operates with the ends of the tube 107 and of an internal blowpipe 108 (from both of which it is spaced by blocks engaging shoulders as before) to provide two coaxial paths for the molten glass; tubes 109 traversing the glass stream through refractory blocks 106 assist in supporting the blow-pipe and supply air thereto; the outer surface (as shown) or the inner surface of the member 105 is curved to cause the glass to converge to the required bore, or a detachable tip may be provided; the single member may be replaced by a number of shells similar to those shown in Fig. 8a, but having depending skirts of equal or varying length, and a further hollow refractory shaping member may be supported from the innermost shell, spaced slightly from the end of the blow-pipe to allow glass to flow over both its inner and its outer surfaces (Fig. 22, not shown). The glass from the melting tank 31 (Fig. 2), skimmed by suitable floats, is fed to the forebay 32 under the control of a gate 37 which seats against easily replaceable refractory slabs 41; around the outlet 51 a further control is provided by a shell 50, whose level may be adjusted by tapered blocks 54. Gas flames are projected into the forebay through tangential conical recesses 46. The viscosity of the glass as it flows over and through the shaping element may be controlled by varying the amount and locality of heat applied thereto by burners 65 (Fig. 5), such variations being accomplished by vertically adjusting the damper ring 80 (by a hand wheel and sprocket-andchain gearing) and the shield 66 (by a crank 74 and pinion and rack). The refractory shell 64 and the parts mounted thereon are also adjustable vertically by nuts 76 having crank handles 77.
Patent GB-796655-A (GB)
Title: Improvements in or relating to low pressure mercury vapour electric discharge tubes for emitting light
IPC: H01J61/04
Filed: 1955-09-06
Abstract: 796,655. Discharge lamps. SOC. ANON. POUR LES APPLICATIONS DE L'ELECTRICITE ET DES GAZ RARES ETABLISSEMENTS CLAUDE-PAZ ET SILVA. Sept. 6, 1955 [Sept. 28, 1954], No. 25543/55. Class 39(1). A low pressure mercury vapour discharge lamp has a store 5 of liquid mercury provided at at least one end of the tube 1, each store 5 being separated from the main body of the tube 1 by a diaphragm 4 composed of a material, e.g., mica, which is not wetted by liquid mercury, the diaphragm being provided with at least one aperture 13, and each of the apertures having a rim 6 formed by pressing out a portion of the diaphragm originally coincident with a part or whole of the area of the aperture, the rim having slits 12 which are sufficiently narrow to prevent the passage of liquid mercury therethrough. The diaphragm 4 can be secured to the tube wall by softening the latter in the vicinity of the periphery of the diaphragm so as to form an inwardly directed annular ridge 9 having a groove 14 in which the diaphragm is held. The apertures 13 may be circular, polygonal or elongated and additional apertures may be provided which are too small to permit the passage of liquid mercury but allow passage of mercury vapour. The rim 6 can be tapered, flared or cylindrical. The diaphragm 4 may be in front of or behind the electrode 2 which may be cold with lead-in wires 7 and 11. The fluorescent coating on the tube need not extend to the ends of the tube. Specification 531,340 [Group XL] is referred to.
Patent GB-458615-A (GB)
Title: Improvements in or relating to pyrophoric lighters
IPC: F23Q2/02
Filed: 1935-09-14
Abstract: 458,615. Pyrophoric igniters. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.-(Art Metal Works, Inc. ; 46, Center Street, Newark, New Jersey, U.S.A.) Sept. 14, 1935, No. 25581. [Class 75 (iii)] On depressing a slidable spring-pressed bar 20 by means of a wick-torch T, a lever 19 is rocked to extend a spring 24 until the nose 18b of the lever disengages a spring- pressed pawl 27 from a disc 23, which is then rapidly rotated by the spring 24 for actuating a friction-wheel 35 to ignite the torch. The rotation of the disc 23 is limited by its nose 23d re-engaging the nose 18<b>, the parts being returned to the normal position by the spring 21 when the ignited torch is removed. A pinion 29 in mesh with a gear segment 23<c> on the disc 23 and the friction-wheel 35 are secured respectively on the hubs of a spring- pressed ratchet coupling 32, 34 adapted to rotate the friction-wheel in one direction only. The igniting mechanism and a tube 9 carrying the fuel container 11 are mounted on plates 4, 8, the plate 4 being connected by a pair of standards 3 within a casing 6 to a base plate 1 preferably covered with felt 2. The container 11 is provided with a sleeve 13 of felt, cotton or the like, or constructed as described in Specification 435,667, to receive the lower end of the torch. In one form of torch T, Fig. 5, the wick 45 is secured to a sleeve 44 screwed in an outer sleeve 42 rotatable in a handle 41 having a rod 46 of non- circular section engaging a corresponding passage in the sleeve 44 so that, on rotating the handle with respect to the sleeve 42, the wick is retracted or advanced. The reduced end 42b of the sleeve 44 is inserted into a narrow nicked slot or V-shaped opening in the end 20<a> of the bar 20. In a modified torch T<1>, Fig. 6, the wick 51 turns with the rod 52 on the handle 48 and is retracted or advanced by engagement with screw-threads 49b in the outer sleeve 49. A cup &c. is provided on' the upper end of the bar 20 for engagement by the lower end of the rod 52.
Patent GB-418781-A (GB)
Title: Power-unit mountings
IPC: B60K5/12
Filed: 1933-09-15
Abstract: 418,781. Mounting engines &c. HUMBER, Ltd., and WISHART, N. M., Humber Works, Stoke, Coventry. Sept. 15, 1933, No. 25589. [Class 79 (iii).] A power unit, supported on a resilient pad carried by a transverse frame member, is restrained from endwise movements by a lug or tongue depending from the unit into a transverse channel member. The rear end of an engine and gearbox unit is shown seated on a pad 15 cradled in a channelled cross frame member 13 of a vehicle chassis, the pad and frame member conforming approximately to arcs about the axis of the transmission shaft 14. From the transmission housing 12, a lug 22 depends into a transverse channel member 23 lined with leather, hard rubber or fabric and attached to the frame member 13 with the interposition of packing 24. The housing is held down by a bolt 19 passing through a rubber ring 18 and through clearances in the frame member and pad 15, threading into a non- circular boss 21.
Patent GB-1353486-A (GB)
Title: Benzodiazepine derivatives
IPC: C07D487/04
Filed: 1971-04-19
Abstract: 1353486 Tranquillizing &c medicines TAKEDA YAKUHIN KOGYO KK 19 April 1971 [27 March 1970 (2) 23 April 1970 28 May 1970] 25622/71 Heading A5B [Also in Division C2] Pharmaceutical compositions having tranquillizing, sedative, anticonvulsant or musclerelaxant activity comprise, as active ingredient, a benzodiazepine derivative having one of the following general formulae wherein R 1  is a hydrogen atom or acyl group, each of the rings A and B is unsubstituted or has one or more nitro, trifluoromethyl, halo, alkyl or alkoxy substituents and R 4  is a hydrogen atom or an alkyl, aralkyl or aryl group, or a pharmaceutically acceptable acid addition salt of a benzodiazepine derivative of the first or second general formula above, together with a pharmaceutically acceptable carrier, and may be administered, e.g. in the form of powders, granules, tablets or injection solutions.
Patent GB-264231-A (GB)
Title: Improvements in axial thrashing machines
IPC: A01F7/06
Filed: 1925-10-14
Abstract: 264,231. Schlayer, F. Oct. 14, 1925. Thrashing-machines; straw, softening.-In a thrashing and straw-reducing machine of the kind in which the corn passes axially through a drum in which is arranged a rotary longitudinal shaft carrying radial beaters interacting with fixed abutments, means are provided for inducing and controlling a flow of air through the machine comprising a screw-like projection on the drum surface near the inlet. The exit may be closed by an iris diaphragm or other movable member to vary the aperture, and the corn is discharged through a grid in the bottom of the drum, which is also provided, near the inlet, with a longitudinal projection to facilitate feeding. As shown in Fig. 8, the machine is furnished in the preliminary thrashing zone I with an inclined surface 8 which, with the inclined beaters 15, effects the feed of the corn and produces a. draught in an axial direction to the principal thrashing zone II, where the spirallyarranged thrashing shoes 15 are wider. The corn is passed to the preliminary and final straw reducing zones III, IV, where the beaters take the form of prongs 35. The bottom of the casing in the zones I, II, and III is in the form of a grating 41 comprising longitudinallyarranged angle-bars 36, Fig. 12, the spaces 40 between which form exits for the grain and air inlets; the bottom of the zone I is inclined, as shown. The reduced straw is discharged through grates 48 and the rear of the drum is fitted with an adjustable end-plate 49 having a conical edge 50, by means of which a variable air space may be provided; the end-plate may be replaced by an iris diaphragm. The wall of the drum near the inlet is provided with a projection 23, Fig. 5, which may be adjustable, and the corn is fed along a shoot 26 with detachable side walls 32 and a sloping roof 27, a movable part 34 being provided for varying the intake 7. The corn may be fed to the shoot by a conveyer, and one or more further projections may be provided similar to the projection 23 lower down in the zone I.
Patent GB-1066753-A (GB)
Title: Improvements in or relating to vessels for containing molten metal
IPC: B22D1/00
Filed: 1965-06-17
Abstract: 1,066,753. Foundry ladles. L'AIR LIQUIDE SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE and INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE. June 17, 1965 [June 18, 1964], No. 25766/65. Heading F4B. A porous plug 3 centred by a ring 8 in an aperture of a ladle wall 2 is held therein by intimately bonding to a ladle refractory lining 1 the faces 6, 7 of the plug, which faces are impervious to molten metals and gases, while the faces 4, 5 thereof are pervious to gases. The plug is separated by a wall part containing perforations 10 from a chamber 12 lined with refractory cement 15 and containing a porous filling 16 of loosely packed granular alumina. The chamber 12 extends beyond the lateral edges of the plug 3 so that in the event of rupture of the plug, or the joint therebetween and the lining, any molten metal is held by the granulated alumina, thus obviating any molten metal leakage. A thermocouple may be placed in the filling 16 for detecting any temperature rise thereof due to any such leakage. Nitrogen under pressure passes into the chamber 12 along a conduit 11, thence passes through the perforations 10 and the plug 3 before emerging into the molten metal in the ladle.