baber/WOPTO huggingface dataset:
Patent GB-1097416-A (GB)
Title: A plant for washing bulk material
Inventor: PARKER FREDERICK WILLIAM
IPC: B03B5/56
Filed: 1965-04-23
Abstract: 1,097,416. Washing granular materials. FREDERICK PARKER Ltd. April 18, 1966 [April 23, 1965], No. 17171/65. Heading B2H. A plant for washing undesirable matter, such as clay or silt, and/or sand, from stone comprises two horizontal or substantially horizontal co-axial drums 1, 2 which are rotatable together to advance the stone through these in succession, pipes 14, 15 for supplying wash water separately to the two drums, and a screen 8 arranged between the drums so as to separate from the stone the water, and hence the undesirable matter and/or the sand, discharged from at least the first drum 1. The stone to be washed is fed to the drum 1 via a chute 10 and a feed ring 9, e.g. as described in Specification 975,296. Inclined blades 11 adjacent the inlet opening of the drum 1 serve to advance the stone through the drum while longitudinally extruding blades 12 assist in agitating the stone. The drum 2 is provided internally, adjacent its outlet, with buckets or scoops (not shown) for discharging the washed stone. The screen 8 which is frusto-conical comprises an outer wire mesh part and an inner perforated metal plate. The pipes 14, 15 are connected to a main supply pipe 16. The water in the drum 2 is preferably supplied to the outlet end of the drums so that it flows in a direction opposite to that of the stone, washing the remaining undesirable matter from the stone and discharging with this matter through the screen together with the water and undesirable matter and/or sand issuing from the drum 1. A chute 13 is provided beneath the screen to receive the water and the undesirable matter. In another embodiment, Fig. 2 (not shown), the drums (1,2) are of the same length and the screen (8) is cyclindrical. A water supply pipe (17) extends through the upper parts of the drums and screen and apart from supplying water to the inlet of the drum (1) and to the outlet of the drum (2), its section inside the screens is fitted with spray nozzles.
Patent GB-776905-A (GB)
Title: Improvements in an oil well pump drive mechanism
Inventor: KOPLIN HARRY
IPC: F04B49/24
Filed: 1955-06-15
Abstract: 776,905. Well pumps. ZEPHYR LAUNDRY MACHINERY CO. June 15, 1955, No. 17246/55. Class 102 (1) [Also in Group XXIX] A, well pump hydraulic drive mechanism com prises a cylindei 16 having a pistor 19 connected to the well rods 12 mounted on a tripod support 49 on a base horizontally adjustably mounted on a frame 10 carrying a hydraulic pump 45 and drive motor 37 and a supply tank 23. Additional rods 81 are provided to guide the piston rod 20 which carries an actuating bar 85 for operating a pilot valve 86 at each end of the piston stroke. Referring to Fig. 6 the valve 86 controls the position of a two-way valve 100 which connects a line 120 to a return line 71 through one or other of flow restricting valves 123, 130, which control the velocity of the piston 19 in the up and down direction respectively, the piston being moved down by the weight of the associated rods. The line 120 is connected at one end through a non-return valve 111 to the pump outlet and at the other through a non-return valve 125 in parallel with a deceleration throttle 135, to the underside of the piston 19. The throttle 135 is closed towards the end of the down stroke by means of a cam device 69 carried by the rod 12. A switch 146 in the motor circuit is held closed by a cam surface on the valve 86 when the piston is rising so that the motor cannot stop until the switch 146 is released when the valve 86 is changed over to cause the piston to descend.
Patent GB-729657-A (GB)
Title: Improvements in or relating to box blanks and boxes made therefrom
Inventor: PRIDEAUX GEORGE EDWARD
IPC: B65D5/30
Filed: 1952-07-08
Abstract: 729,657. Boxes. THOMPSON & NORRIS MANUFACTURING CO., Ltd. July 7, 1953 [July 8, 1952], No. 17248/52. Class 18. A box for chicks &c. has all sides folding up from a base scored so as to be inset with respect to a pair of opposite side walls. End walls 4, 5 have extensions 20 with tongues 27, 28, the tongues 28 tucking into slots 30 in side walls 2, 3. Extensions 8 are folded onto the walls 2, 3 and secured to form pockets behind the slots. A partition 36 may be fitted having similar tongue-and-slot connection with the walls 2, 3. 'A lid 39 may be provided having holes 49 coinciding with notches 15 in the walls 2, 3 for ventilation. Further ventilation holes 14, 32 are also provided. The Provisional Specification describes a box having a flat base but otherwise having the features described above.
Patent GB-403435-A (GB)
Title: Improvements in and relating to springs particularly for electric switches
IPC: H01H5/18
Filed: 1932-06-20
Abstract: 403,435. Snap-action switches. WAIT, E. G., 25, Woodstock Avenue, Sutton, Surrey. June 20, 1932, No. 17333. [Class 38 (v).] A spring for giving a snap-action for example in electric switches and camera shutters, comprises a resilient metal strip 10 of curved crosssection bent to form a loop having the free ends held at 14 with their concave surfaces together. The strip passes between two stops 12 so that the loop has two positions of stable equilibrium, that is when one of the arms of the strip is unstressed and the other arm is buckled so as to give a straight cross section where it is held by the stops, as shown in Fig. 2. Thus the loop when moved will snap rapidly across the central position. If the loop is held then the free ends will snap across in a similar manner. In a modification the loop is replaced by two strips separated at one end by a rigid cross bar. Fig. 5 shows a snap action thermal switch employing such a spring 10 the free ends of which are clamped to a terminal block 35 connected to one pole of the supply. In the position shown, a lamp 42 is connected in circuit through a heating coil 33, bimetallic strip 29 and contacts 38, 36 and spring 10. As the strip heats up it bends to the left pushing the loop of the spring 10 until it passes its central position and snaps over thus breaking the circuit of lamp 42 and making a similar circuit through lamp 43 and bimetallic strip 28. The action then proceeds similarly in the opposite direction. In a modification only one bimetallic strip is used and this carries a hooked extension which returns the spring when the strip cools. Fig. 8 shows a push-button switch in which the spring comprises two strips with their ends 24 held apart by a fixed crossbar. The free ends 22 below the stops are arranged, when engaged with lost motion by lugs 60 on a push rod 61, to snap over and engage lugs 59 on a contact arm 56 pivoted at 57, to break circuit at 58. Fig. 7 shows the spring used to give a quick-action to a camera shutter 45 having an aperture 46 for uncovering a lens 47. The springs 24 are held apart at one end by lugs 50 and pass between stops 51 leaving the free ends 22 to snap over and engage pins 48, 49 to move the shutter when the ends are moved with lost motion by forks 54, 55 on an operating lever 52.
Patent GB-564355-A (GB)
Title: Multi-tray clarification
IPC: B01D21/00
Filed: 1942-12-08
Abstract: 564,355. Clarifying liquids. TRIGGS, W. W. (Dorr Co., Inc.). Dec. 8, 1942, No. 17460. [Class 46] In the clarification of liquids, particularly sugar juice, in a multi-tray clarifier in which the liquid is passed into each of a plurality of superposed chambers, clarified liquid is withdrawn from each chamber and a preliminary sedimentation is effected in a plurality of the chambers, the solids separated in the latter pass into a plurality of other chambers having mechanical thickening means therein, each thickening chamber receiving the solids from at least one of the preliminary sedimentation chambers. In the form shown in Fig. 2, liquid passes from a tangential. inlet 30 through a flocculating chamber A and inlets 31 into a rotary tube 22, driven by a motor 19, thence through outlet openings 36 and outlet tubes 39 into preliminary sedimentation chambers B, D and thickening chambers C, E, respectively, the clarified liquid passing through pipes 56 and a regulating overflow box 57 to an outlet 58. The tube 22 carries mud rakes 23 in each chamber, arms 25 supporting flocculation blades 26 in the chamber A, scraper arms 45<1> in a inud trough 41 in the chamber C and scraper blades 45 in the conical outlet 46 of the chamber E. Thickening blades 27 extend upwards from the rakes 23 in the chambers C, E. A mud seal is formed between the chambers A, B. by an upturned flange 34 on the tube 22 co-operating with a fixed flange 35 and a mud-sealed overflow from the chamber C to the chamber D is provided by extending the inner wall 42 of the trough 41 into a hood 43. Separated solids pass from the chambers B, D to the chambers C, E respectively through central passages formed by fixed flanges 35 fitting in cylindrical flanges 38 carried by the tubes 39. The solids are withdrawn through pipes 44, 47 from the chambers C, E by a pump 50 having outlets 55 discharging into a launder 14 having a discharge pipe 59. Scum rising into a chamber 13 overflows a weir 15 into. the launder. In the form shown in Fig. 4, solids pass from preliminary sedimentation chambers B, CA, D through a thickening chamber EA to a thickening chamber E, from which they are removed. The lower end of the rotary tube 22A is closed except for a tubular extension 60, which leads to the outlet- 46 and carries the scrapers 45. The connections between the chambers A, B,-Figs. 2 and 4, may be interchanged.
Patent GB-544959-A (GB)
Title: Improvements in or relating to generators of electrical oscillations
IPC: H03B5/34
Filed: 1940-12-11
Abstract: 544,959. Valve generating circuits. COOKE, D. Dec. 11, 1940, No. 17577. [Class 40 (v)] A generator for use as a wavemeter or as the drive oscillator of a transmitter comprises means to produce a high frequency oscillation which is modulated non-sinusoidally by a lower frequency oscillation the high frequency oscillation being accurately tunable and continuously variable between two frequencies the difference between which is equal to the frequency of the lower frequency oscillation. In this way a plurality of waves spaced apart by the frequency of the lower frequency oscillator is obtained and these are moved in the spectrum by variation of the high frequency oscillator. The Figure shows a triode-hexode the hexode portion of which is back-coupled by the coil e and tunable by condenser C2 over a range of say 3-3.1 mc. while the triode portion oscillates at say 10 kc In a modification, Fig. 2 (not shown), the triode portion of the valve may be switchable to operate at a higher frequency say 1mc. and the hexode reaction coil be shorted so that a rough calibration of the apparatus under test may be made from the harmonics generated. A separate oscillator may be used feeding a pair of hexode valves. in push-pull, Fig. 3 (not shown), so that spurious results due to side-band frequencies and harmonics may be avoided.
Patent GB-292478-A (GB)
Title: Improvements in or relating to speed controlling mechanisms for motor drives
IPC: H02P5/50
Filed: 1928-06-18
Abstract: 292,478. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). June 18, 1927, [Convention date]. Differential governors.-The Specification describes arrangements for automatically maintaining constant relationship between the speeds of running of a number of electric or other motors. In the arrangement shown in Fig. 1, electric motors M are coupled to respective synchronous dynamo-electric machines S with equaling connections A between the polyphase windings. The windings are mounted on rocking yokes adapted, in response to out of balance torque, to shift normally centred regulating members R for the respective motor fields F. Variable-ratio gearing between the motors M and the machines S allows the speed ratio between the separate motors to be adjusted. The machines S may either be excited by direct current, as shown, or by polyphase current. In the arrangement shown in Fig. 2, the motors M drive elements of differential trains D the opposite elements of which are geared to a common shaft L. The floating elements of the differential trains are adapted to shift the respective regulating members R for the motor fields F. When the invention is applied to non-electric motors, throttle or other regulators replace the electrical regulators R.
Patent GB-177744-A (GB)
Title: Process for the manufacture of explosives and primers
IPC: C06B43/00
Filed: 1921-06-28
Abstract: 177,744. Rathsburg, H. June 28, 1921. Explosives.-Crystalline compounds of the mixed crystals and double-salts type containing the potassium salt of dinitrodinitrosobenzene and difficultly soluble salts of azoimide, tetrazol derivatives, or mono- or poly-nitrated phenols, for example lead azide, azotetrazol, and tretrazylazoimide salts, trinitroresorcinates, and trinitrophloroglucinates, are employed for loading ammunition generally and as a top charge in detonators.
Patent GB-1030989-A (GB)
Title: Process for the production of polymers
IPC: C08F210/06
Filed: 1965-04-27
Abstract: A polymerization catalyst comprising vanadium oxytrichloride, an alkyl aluminium compound, and an alcohol is used for copolymerizing ethylene and a alpha-olefin, and terpolymerizing ethylene, an alpha-olefin, and a non-conjugated diene such as dicyclopentadiene, 1,4-pentadiene, 1,4 - hexadiene, 1,5 - cyclooctadiene, methyltetrahydroindene, ethyltetrahydroendene, or 2-methyl-norbornadiene.  The alpha-olefin may be propylene, buten-1, penten-1, hexen-1, hepten-1, hepten-1, octen-1, isobutylene, 5-methylpeten-1, styrene, alpha-methylstyrene, or vinylcyclohexane. During the copolymerization reaction the molecular weight of the product may be controlled by addition o dialkyl zinc or hydrogen. The copolymerization and terpolymerization is effected by conventional "low-pressure" techniques. Exemplified catalysts are ethylaluminium sesquichloride, vanadium oxychloride and ethyl, or n-butyl, or n-octyl alcohol, and di-isobutyl-aluminium monochloride, VOCl3 and n-butyl alcohol.  The terpolymers are vulcanized with conventional sulphur-containing mixes.
Patent GB-120891-A (GB)
Title: Improvements in or relating to the Manufacture of Electric Dry Batteries.
IPC: H01M4/50
Filed: 1918-10-30
Abstract: 120,891. Burgess Battery Co., (Assignees of Burgess, C. F.). Oct. 20, 1917, [Convention date]. Manganese oxides.-Impure manganese dioxide obtained from worn-out dry cells is rendered fit for use again by treatment with a 10 per cent solution of sulphuric acid or a solution of nitre cake. The treatment may occupy from one to eight hours according to the temperature employed. The residue is washed and dried. The Specification as open to inspection under Sect. 91 (3) (a) states that as a preliminary treatment, the exhausted oxide may be partly reduced to a lower state of oxidation by roasting or electrolysis. The subsequent treatment with acid removes the lower oxides together with other impurities, leaving the dioxide in a porous condition. The roasting may be carried out from one to four hours at 600‹ C. Electrolytic reduction is effected by mixing the oxide with carbon and placing the mixture in contact with a carbon cathode in a solution of ammonium and zinc chlorides. On passing a current, the oxide is partly reduced by the liberated hydrogen. The mass is then broken up and first of all treated with water to cover the electrolyte and then with acid as described above. The treatment with acid, whether preceded by a reducing treatment or not, may be applied to highgrade Russian manganese or to the lower grades obtained from other natural sources. Instead of sulphuric acid or a solution of nitre cake, a 5 per cent. solution of hydrochloric acid may be used. This subject-matter does not appear in the Specification as accepted.
Patent GB-372982-A (GB)
Title: Improvements relating to pulverised fuel furnaces
IPC: F23M5/08
Filed: 1931-06-19
Abstract: 372,982. Pulverulent-fuel furnaces. CLARKE, CHAPMAN, & CO., Ltd., Victoria Works, Gateshead-on-Tyne.-(Assignees of Fours et Appareils Stein, Soc. Anon.; 48, Rue la Boetie, Paris.) June 19, 1931, No. 17819. Convention date, June 23, 1930. [Class 51 (i).] Pulverized fuel with primary air is fed to a furnace through burners 6 arranged around the walls of the furnace so as to produce a region of turbulent combustion at the centre of the furnace, the burners being fed with conveying streams of secondary air through nozzles 8 arranged above and below the burners. The walls of the furnace are screened by water tubes.
Patent GB-385307-A (GB)
Title: Improvements in and relating to dyes and dyeing
IPC: C09B29/20
Filed: 1931-06-19
Abstract: Azo dyes; azo dyes, forming on the material.--1-Aryldiazosulphonates of 2 : 3-oxynaphthoic arylides are produced by coupling 1-sulpho-2 : 3-oxynaphthoic arylides with diazo compounds in acid or neutral solution.  On cautious treatment with alkali, preferably sodium carbonate, the products yield alkali salts of 1-sulpho-1-arylazo-b -naphthaquinone-3-carboxyarylides, which are converted into the corresponding azo-derivatives of the 2 : 3-oxynaphthoic arylides on treatment with acid, the sulpho group being eliminated.  The conversion into the azo dyestuff may be effected on the fibre, in conjunction with enolic sulphuric esters of vat dyes or other quinones, or with the dyes described in Specification 333,506, [Class 2 (iii), Dyes &c.], if desired.  In examples (1) 5-nitro-2-aminoanisol is diazotized, coupled with sodium-2 : 3-oxynaphthoicanilide-1-sulphonate, and the product suspended in water and treated with sodium carbonate, and (2) wool is dyed in a bath made by dissolving the product of example (1) in water, the bath being acidified with sulphuric acid, after the absorption of the dyestuff, to precipitate the insoluble azo dyestuff on the fibre.
Patent GB-273504-A (GB)
Title: Improvements in or relating to the spring suspension of motor vehicles
IPC: B60G17/02
Filed: 1927-03-17
Abstract: 273,504. Hodgson, H. March 17, 1927. Springs, arrangement of.-A spring suspension for motor vehicles consists of an ordinary quarter-elliptic spring 1 acting as the normal suspenson spring and being straight or substantially straight under load, and an additional spring 3 having a cantilever action through the medium of a centrally disposed pressure regulating device. The spring 3 is pivoted at 5 to the frame 6. The pressure regulating device may comprise a screw 7 adapted to bear against a plate 9 on the spring, or a cam mounted on the frame rotated from any convenient point on the vehicle and having a series of flats for engagement with the spring or a plate thereon. The springs may be connected to a fixed anchorage 2 on the axle in the manner shown, or they may be connected to a loose bushed anchorage, or the end of the spring 3 may slide in guides on the axle.
Patent GB-771310-A (GB)
Title: Process for the manufacture of crude calcium cyanamide
IPC: C01C3/00
Filed: 1953-06-29
Abstract: In the production of fine granular calcium cyanamide from calcium carbide and gaseous nitrogen in a fluidized bed, the bed is maintained at a substantially constant temperature above 800 DEG C., but below the fusion temperature of calcium cyanamide, e.g. 1000 DEG C., and the concentration of calcium carbide in the bed is maintained at below 30 per cent by weight of the bed to prevent sintering. Solid catalyst, e.g. calcium fluoride or chloride, may be included in the bed, which otherwise comprises calcium cyanamide, calcium oxide and carbon, but it is preferred, instead of solid catalyst, to add a small amount, say 0.3 per cent, chlorine to the nitrogen stream.  It is stated that at the high temperatures used, the reactant particles become coated with a film of fused material, presumably calcium cyanide, which increases reaction velocities.  The product from the fluidized bed is desirably further treated with N2 in a fixed bed. It is suitable to divide the reaction zone into several fluidized beds, through which reaction materials pass successively, to conserve heat, and apparatus is described having two superposed fluidized beds, or three adjacent fluidized beds separated by radial partitions.  Specifications 688,188 and 690,949 are referred to.
Patent GB-335628-A (GB)
Title: Improved means for energizing the motors of talking machines
IPC: G11B19/00
Filed: 1930-01-15
Abstract: 335,628. Ratcliff, W. D. Jan. 15, 1930. Driving.-The driving springs or weights operating gramophones are rewound or reset by a swinging movement of the' tone-arm beyond the playing position. As applied to a machine having a driving drum from which cords extend to weights, the drum shaft is connected by sprockets N, G<1> and a chain G to a spindle V carrying a loose sprocket T connected by a chain to a sprocket M loosely mounted on the vertical part D of the tone-arm. A flange A fixed on the part D carries a pivoted lever E which is connected by a cord F to the sleeve joint carrying the sound-box, and when the sound-box is turned back out of action the pull on the cord is released so that the lever E permits a spring-pressed pawl B to engage a ratchet wheel C fixed to the sprocket M, whereupon, on swinging the tonearm, the sprockets and chains are driven to drive the drum and wind up the weights. In this action, the shaft V is driven from the loose sprockets T by a spring pawl R engaging a ratchet wheel S fixed on the shaft V. During playing, the pawl R is normally disengaged by a cone-ended sleeve Q which is depressed by a cam P on the spindle of the usual brake, but when the brake is applied the cam releases the sleeve so that the spring pawl R can move into engagement with the wheel S. Specification 829,108, [Class 10, Animal-power engines &c.], is referred to.
Patent GB-1166421-A (GB)
Title: Converters and Inverters
Inventor: NOWICKI JERZY RYSZARD
IPC: H02M3/338
Filed: 1968-04-17
Abstract: 1,166,421. Inverters and converters. MULLABD Ltd. 17 April, 1968, No. 18158/68. Heading H3T. An inverter has four transistors and a transformer 3, pairs of transistors TR 1 , TR 3  and TR 2 , TR 4  conducting alternately through the primary winding at a frequency dependent upon timing components in the base circuits of one of the transistors of each pair. The timing components may be a C-R network, CR 1 R 2 ; or an LC network (L, C, Fig. 2, not shown); or an LR network (L, R 1 , R 2 , Fig. 3, not shown). One secondary of the transformer drives the load R L , which may be a rectifier to render the whole circuit a converter, and secondaries 4, 5, 6 supply regenerative feedback to the transistor bases. Diodes (D 1 , D 2 ) raise the Q of the LC circuit.
Patent GB-836978-A (GB)
Title: Electrodeposition of copper and copper alloys
IPC: C25D3/58
Filed: 1958-06-06
Abstract: 836,978. Copper and copper alloy plating baths. METAL & THERMIT CORPORATION. June 6, 1958 [June 19, 1957], No. 18211/58. Class 41. An electrolytic plating bath for copper or copper alloys includes gluconic acid, an alkali metal or ammonium gluconate, copper gluconate, or glucono-lactone, which improves anode; current efficiency and reduces polarization. About 0.065 to 0.26 mols. per litre is added. Alkali cyanide copper baths are specified in which either tin or zinc salts may be present to give bronze or brass coatings. Optional additions include, selenium and tellurium compounds, lead, zinc, bismuth or antimony salts; quaternary amines, aminopropionates, or polyoxy glycol ethers. The electrolyte or the cathode may be agitated or moved, and the current periodically reversed. The electroplate may be applied to any conventional base metal, but in the case of iron, steel, or zinc die castings a flash coating of copper is a preferred initial treatment. Specifications 836,977, 836,979 and U.S.A. Specification 2,548,867 are referred to.