baber/WOPTO huggingface dataset:
Patent GB-637578-A (GB)
Title: Methods for extracting alumina from raw anhydrous calcium aluminates
IPC: C01F7/12
Filed: 1946-08-28
Abstract: In extracting alumina from anhydrous raw calcium aluminates with dilute alkali carbonates, the raw material is treated in one or more stages with a leaching solution at a high "Attack Ratio" (i.e. the ratio of the molecules of sodium carbonate per litre of solution to the molecules of alumina, in the solid raw material to be treated, per litre of solution) and the resulting solution is enriched and purified by at least one leaching operation at lower "Attack Ratio" during which fresh raw material is added and stirred into the solution, the residue from the operation being thereafter subjected to a high "Attack Ratio" treatment with fresh solution and so on; the enriched and purified solution being treated in known manner for the production of alumina.  The process is preferably carried out at 50 DEG  to 60 DEG  C.  Two grades of raw material may be used, the lower grade material serving principally for leaching at high "Attack Ratio," and the other for enriching and purifying the leaching liquors.  In one modification, the residues are not immediately separated but are allowed to collect from successive operations and suitable amounts are removed regularly when a selected amount of residue has accumulated.  By regulating the conditions, such as the charge of raw material, "Attack Ratio," time and temperature of solution, solutions may be obtained which contain at the end of the operation: (a) no sodium carbonate and no lime in solution, or (b) lime in solution, in which case the lime is precipitated by addition of sodium carbonate leaving a solution of sodium aluminate from which pure alumina may be obtained, or if the lime is present in small amount, the solution may be treated with excess carbon dioxide.
Patent GB-768235-A (GB)
Title: Improvements in or relating to chairs
IPC: A47C1/028
Filed: 1953-10-21
Abstract: 768,235. Convertible chairs. WATSON, J. Jan. 21, 1955 [Oct. 21, 1953], No. 25936/53. Class 52 (2). The seat 2 of a dining chair is mounted on separate front and back links 4, 16 so that it can be lowered with respect to the frame for use as a fireside chair. The chair back 13 may be fixed to the seat frame or pivoted to the supporting frame and angularly adjustable.
Patent GB-190819-A (GB)
Title: Improvements in apparatus for the distillation of carbonaceous materials
IPC: C10B1/10
Filed: 1921-10-01
Abstract: 190,819. Hutchins, T. W. S. Oct. 1, 1921. Charging.-Coal &c. is fed into a rotary retort by being charged from a hopper j into a trough k from which a scoop i attached to an inner rotary tube f feeds the material through this tube from which it passes through holes n into an outer rotary tube a the treated material being discharge'd into a hopper.
Patent GB-1307000-A (GB)
Title: Fluid valve assembly
IPC: F02M31/06
Filed: 1970-05-29
Abstract: 1307000 Valves FRAM CORP 29 May 1970 [31 May 1969] 26088/70 Heading F2V [Also in Division F1] A valve, particularly for motor vehicle I.C. engine air cleaner, comprises a pivoted platelike valve member 7, Fig. 3, of resilient material co-operating with arcuate seats 11, 11<SP>1</SP> to which it conforms by flexure in closed position, so that flow on the pressure side takes place in a curved path over the valve member without appreciable pressure loss. As shown in an air cleaner arrangement, also Figs. 1 and 2 (not shown), the valve housing 6 has one inlet 4 to be turned away from the engine to draw in air at atmospheric temperature, and a second inlet 5 to be turned toward a hot part of the engine to draw in warm air. Seasonal setting is effected by positioning the valve member selectively adjacent alternate seats 11, 11<SP>1</SP> by a handle 8a retained in adjusted position by notches (9, 9<SP>1</SP>) in a slot 10.
Patent GB-393297-A (GB)
Title: Improvements in or relating to low temperature carbonisation or distillation of carbonaceous materials
IPC: C10B1/10
Filed: 1931-09-17
Abstract: 393,297. Coking processes; retorts. BRITISH COAL REFINING PROCESSES, Ltd., 3, Central Buildings, Westminster, and SALERNI, P. M., 23, Carlton House Terrace, St. James's, London. Sept. 17, 1931, No. 26113. [Classes 51 (ii), 55 (i), and 55 (ii).] In a process for making smokeless fuel in the form of hard dense balls from coal or the like by low temperature carbonization, there is mixed with the ground coal not more than 15 per cent of coke or semi-coke finely ground so that its apparent density approximates to its absolute density, for example, so that it passes a 60 mesh (I. M.M.) sieve. The mixture is then subjected to a rumbling action in an externally heated rotary retort until it assumes the form of spheroidal masses ready for use without further treatment. The temperature is kept between 450 and 600‹ C., and a binder such as the higher boiling point fractions of the oil obtained from the process may be added, which reduces the raising of dust. A proportion of high temperature pitch may be added when non-caking coal is used. All the constituents of the blend (other than the coal) may be obtained from the products of the charge. A rotary retort suitable for use in the process is described in Specification 393,305, and comprises an inner element formed by walls 2, 3 containing an annular space 4 through which heating gases pass, the inner element being supported by an outer element or shell 1 to which it is slidingly connected, and which is kept cool by gases passed through an annular space 14. The retort is mounted on rollers, and its ends extend into stationary heads B, C, gaseous sealing being effected by maze plates 27 .. 30 as described in Specification 393,306. Scraping means comprise a flexible support 44 from which are suspended scrapers 43. The temperature of the inner element, as described in Specification 393,305, is registered by an expansion device on the outer shell. The coal for use in the process may be preheated by the outgoing coke.
Patent GB-362383-A (GB)
Title: Improvements in or relating to explosive mines
IPC: F42B19/00
Filed: 1930-09-02
Abstract: 362,383. Torpedo mines. AYAD, I. B., 47, Boulevard Suchet, Paris. Sept. 2, 1930, No. 26194. [Class 9 (ii).] A moored mine is so constructed that it acts as a mine when moored and as a torpedo when the pull of the mooring rope is released, this release causing the start of the propelling motor of the torpedo. A torpedo 1, Fig. 1, is normally held with a buoy 3 by straps 4 retained by jaws 26, Fig. 2, kept together by the lid 221 of a box 22 connected to the mooring rope 2. If the torpedo thus moored is struck by a ship, it is exploded like a mine by the impact; but, if the mooring rope is cut by a mine-sweeping device attached to the ship, a spring 24 lifts the lid 221 thereby allowing springs 30 to open the jaws 26 to release the torpedo from the buoy 3. At the same time, a line 11 is also released by the jaws 26 and allows a spring 13 to open the starting valve 9 of the propelling motor 7, which is supplied with compressed air from a reservoir 6 through the valve 9 and a reducing valve 8. Rudders 18 are initially deflected to cause the torpedo to steer a circular path. After a given travel, a worm gear 20 driven by the propeller shaft 14 causes the rudders to take their central position and the torpedo then proceeds in a straight line. If the torpedo fails to strike the ship it is exploded when the pressure in the reservoir 6 falls below a predetermined value, a spring 32, Fig. 3, then depressing a piston valve 31 admitting an electrolyte to electrodes 35 in an electric firing circuit.
Patent GB-171976-A (GB)
Title: A method of treating pyrophoric materials for the purpose of reducing or eliminating their pyrophoric character
IPC: C06C15/00
Filed: 1921-10-04
Abstract: Catalytic materials which are pyrophoric in character, such as the iron or other heavy metal employed in the synthesis of ammonia, are rendered harmless by bringing them into contact with water vapour or carbon dioxide at a raised temperature before removal from the reaction chamber.
Patent GB-1105879-A (GB)
Title: Process for the preparation of oximes
Inventor: ROSINGER HERBERT PAUL
Filed: 1966-06-13
Abstract: Oximes of the general formula <FORM:1105879/C2/1> wherein R and R1, which may be the same or different, are alkyl or aryl groups are prepared by reacting a halogen with an aqueous solution of an aldoxime of general formula R-CH=NOH and reacting the product with a mercaptan of formula R1SH under basic conditions the mercaptan optionally being present as a salt. Preferably, two equivalents of base should be employed for each equivalent of halogen or aldoxime and the base may also be partially added before halogenation and partially after. The process may be batchwise or continous, the halogen preferably flowing countercurrent to the aldoxime.  The aldoxime starting materials may be prepared by reacting an appropriate aldehyde with hydroxylamine salts, optionally in the presence of sodium carbonate or by reacting the aldehyde with sodium nitrite, sodium bisulphite and sulphur dioxide in water, the products of the latter method optionally being used in situ.
Patent GB-262617-A (GB)
Abstract: 262,617. Marshall, H. P. Jan. 18, 1926. Tickets, issuing; registering number and value of; printing arrangements.-A ticket printing device for omnibus &c. fare systems wherein a single standard ticket is used comprises a sighting and type drum settable by external means through a clutch, a totalizing-counter actuated thereby, and manually operable means for impressing the amount on the ticket, the operating means serving to actuate a number counter, to de-clutch the setting means after the printing operation, and to release the drum retaining means. As shown in Fig. 2, the drum, which comprises two sections 7, 8 with cutting type numerals 9 and indicating numerals 10 respectively, is mounted on a shaft 11 and is connected to a setting knob 12 through a clutch device 40, 41, the drum being held in set position by the engagement of a pawl 16 with a ratchet wheel 15 secured to the drum. The spindle 11 is coupled, through a ratchet drive 14, to a fare totalizing counter 13. The casing 1 has an aperture 2 for indicating the drum setting and is provided with a slot 3 for the insertion of a ticket; when a ticket has been inserted a trigger finger 6 or the end of an operating rod 17 is depressed against the action of a spring 21 whereupon a cam face 25 on the rod rocks a cam member 26 so as to raise the impression hammer 28 and force the ticket against the cutting type 9 presented to it. At the same time a bell hammer 30 is released to strike a bell 31. On the release of the rod 17 a cam 47 on the impression hammer 28 rocks a forked lever 38 so as to disengage the clutch member 40 and a pawl 22, Fig. 5, actuates the driving ratchet 23 of a ticket number counter 24. During this return movement a recess 49 in the rod 17 co-operates with the pawl 16 to disengage the ratchet wheel 15 whereupon the drum returns to its initial position by spring means. In order to prevent the drum being carried past the zero or highest numeral a pin 19 on the shaft 11 co-operates with a pivoted stop 18, Fig. 4, movable between fixed stops 20. In a modified form, as shown in Fig. 6, the clutch 40 is adapted to be disengaged by a lever 38 connected by a link 36 to a lever 35 having a projection 34 in the path of a one-way pawl 32 pivoted on the rod 17. A second projection 44 on the lever 35 is provided to release the pawl 16 to permit of the restoring of the drum. The rod 17 may be locked against movement by a latch adapted to be released when a ticket is inserted.
Patent GB-696907-A (GB)
Title: Improved device for regulating the level of liquids
IPC: G05D9/12
Filed: 1950-10-27
Abstract: 696,907. Automatic liquid level control systems. SCHREIBER, D. S. Oct. 27, 1950 [Oct. 29, 1949], No. 26313/50. Class 38 (iv). In a system for regulating liquid level between two limits, a relay controlling level is controlled by a valve oscillator, a network associated with which includes a condenser the capacity of which varies with liquid level and the dielectric material of which is partly the liquid and partly a solid such as glass. In Fig. 1 a liquid container 1 is provided with a glass gauge tube 2 surrounded by two metal cylinders 3, 4 forming, with a metallic conductor 5 within the tube, two condensers having the liquid as dielectric. Cylinders 3, 4 are adjustable along tube 2 and are set in positions corresponding to the limits between which the level of liquid is to be kept. The tuned circuit 8, 9 of a valve oscillator 6 forms with a condenser 7 and the condensers 3, 4 a bridge circuit associated with the grid and cathode of valve 6 so that when the level of liquid reaches the upper limit the input to valve 6 is reduced to such an extent that oscillation ceases. This results in conduction of a valve 12, the grid of which is coupled to the screen grid of valve 6, to energize the winding 13 of a relay to stop a pump or close a valve for regulating the liquid level. At the same time negative bias is applied to valve 6 through potentiometer 15 and auxiliary relay contacts insert a condenser 14 in parallel with condensers 3, 4. This ensures that oscillation does not re-commence and the relay is not de-energized until the level of liquid falls to the lower limit. The valves are A.C. operated. An arrangement in which capacity responsive to level is formed by plates on opposite sides of tube 2 is referred to.
Patent GB-670375-A (GB)
Title: Improvements relating to watch bracelets
IPC: A44C5/14
Filed: 1949-10-14
Abstract: 670,375. Watch bracelets. STRAUSS, W. S. Oct. 16, 1950 [Oct. 14, 1949], No. 26392/49. Class 43. The bar-engaging end member of a watch bracelet of the type comprising a U-shaped metal strip 1 which snaps over the watch bar is formed with indentations 4, cuts or the like near its ends to facilitate shortening of the member by filing, cutting off or otherwise removing its extremities when it is to be fitted to a short watch bar. The indentations 4 are similarly placed at each end of the member 1, so that by cutting along corresponding indentations the member remains symmetrical with respect to the bracelet. The indentations may extend wholly or partly round the member 1. An integral extension 2 of the member 1 is hinged to the end link 3 of the bracelet.
Patent GB-461019-A (GB)
Title: Improvements in shells for guns and in the manufacture thereof
IPC: F42B30/08
Filed: 1935-09-25
Abstract: 461,019. Making projectiles. AUSTIN OF LONGBRIDGE, H. AUSTIN, BARON. Sept. 25, 1935, No. 26504. [Class 83 (ii)] A shell for a gun is formed from a length of steel bar having welded thereto at one end a steel disc. Alternatively it is formed from a length of stout steel tube one end of which is closed by a steel disc welded thereto, the grain of the metal of the disc running substantially at right angles to the axis of the tube. A disc B, Fig. 4, which is preferably punched or cut from a steel plate so that its grain lies transversely to the axis of the shell is welded to a bar of which the grain lies longitudinally, and the bar is bored or hot pressed to produce the hollow body A of the shell. The bore may extend into the disc B, Fig. 5. In a modification a disc B, Fig. 6, is welded to a length of tubing A<1>. When the welding operation is performed electrically, the face of the disc is preferably slightly convex. Two discs may be welded simultaneously to their respective bars by the interposition of a conductor.
Patent GB-771614-A (GB)
Title: Improvements relating to soot-blowers
IPC: F28G3/16
Filed: 1954-09-14
Abstract: 771,614. Soot blowers. WILSON, P. MC. C. Dec. 2, 1955 [Sept. 14, 1954], No. 26551/54. Class 99(2) A blower head 22, Fig. 1, is advanced and retracted by means of a shaft 20 oscillated from a rotary compressed-air motor 41, e.g. of the rotary vane type, a control valve for which is actuated so that when the shaft has been oscillated a predetermined number of times the motor is stopped. The shaft 20 is in the form of a screw oscillation of which causes reciprocation of a nut 21 acting on the nozzle, the latter being oscillated by en-, gagement of a follower 24 in a cam slot 25 and having ports 26 to admit steam from a supply pipe 28 when the nozzle is in the operative (forward) position. The screw 20 is driven from a shaft 31 connected to a shaft 69, Fig. 4, oscillated by gears 70, 71 from a shaft 59 carrying a bevel gear 58 in mesh, with bevel gears 56, 57 loosely mounted on a shaft 51 driven from a worm 49 on the motor shaft 48, and a worm wheel 50 connected to the shaft by a slip clutch 64, 65. A clutch member 62 slidably keyed to the shaft 51 is moved into engagement with the gears 56, 57 in turn by means of a lever 87 rocked about a pivot 88 by means of a rod moved in opposite directions by engagement of a nut 76 mounted on a screw-threaded part 69a of the shaft 69 with a striker slidable on the rod. The clutch member 62 is pushed into and retained in an operating position by a spring pressed plunger 96 having a V- shaped nose co-operating with a similar nose on the lever 87. The nut 76 carries two pins 99 acting on a star wheel 100 fixed to a shaft 101 which is thus rotated stepby-step. A cam 105, Fig. 11, on the shaft 101 has a single hump 105a acting on the stem 42b of a piston valve 42a to shut off the supply of air from a pipe 43 to a pipe 45 leading to the motor. A second cam 107 attached to the cam 105 acts on a spring- pressed plunger having a wedge-shaped end acting on a drop 107a on the cam at: the end of a revolution to turn the cam 105, into a position in which the valve is released. The cams 105, 107 are angularly adjustable on the shaft 101. The star wheel 100 has three points corresponding to six strokes of the nozzle; the number of strokes may be varied by interposing gearing between the wheel and the cam shaft 101. The motor is started by admitting air at 46 to open the valve 42a, by means of a valve on a remote control panel; an indicator on the panel shows when the blower is in operation. The blower may be one of a series each having its own motor.
Patent GB-1421937-A (GB)
Title: Copolyetheresters
IPC: C08G63/672
Filed: 1973-06-04
Abstract: 1421937 Copolyetheresters E I DU PONT DE NEMOURS & CO 4 June 1973 [5 June 1972] 26564/73 Heading C3R A segmented thermoplastic copolyetherester comprises long- and short-chain ester units derived from a poly(alkylene oxide)glycol of molecular weight 400-6000 and a carbon to oxygen ratio of from 2À0 : 1 to 4À3 : 1, a diol having a molecular weight not greater than 250, and a dicarboxylic acid of molecular weight not greater than 300, at least 91% of which is 2,6- naphthalone dicarboxylic acid, and wherein at least 91% of the short chain ester units are identical and the copolyetherester contains 25- 65% by weight of the short chain ester units. The examples describe copolyetheresters prepared from poly(tetramethylene ether) glycol of molecular weight 980, dimethyl 2,6-naphthalene dicarboxylate and 1,3-propanediol, 1,5- pentanediol, 1,10-decanediol, 1,8-octanediol, 1,7 - heptanediol and 1,9-nonanediol. The copolyetheresters may be mixed with stabilizers and inorganic fillers, e.g. carbon black, silica gel, alumina, clay and chopped fibreglass.
Patent GB-362505-A (GB)
Title: Improvements in tube radiators
IPC: F28F9/14
Filed: 1930-09-06
Abstract: 362,505. Radiator tube joints. PRICE, A. E. and PRICE, A., 11, Sedgeford Road, Shepherd's Bush, London. Sept. 6, 1930, No. 26627. [Class 99 (i).] Radiator tubes b are connected in a fluidtight manner to the tube plates p by rubber &c. sleeves r, Fig. 3, which are 'disposed within open-ended cylindrical &c. sockets s in the form of ferrules mechanically secured to the tube plates by rolling, screwing, &c., Fig. 7. Alternatively the sockets may be formed by pressing-out the tube plate, Fig. 8. Figs. 1 and 5 show modified constructions for radiators having a pair of endplates p, pl. In applying the invention to radiators having a single thick plate p. Fig. 14, the sockets may be pressed out of the plate and also out of a further thin plate p<1> riveted or otherwise secured to the plate p. Various other modifications are described.
Patent GB-1089317-A (GB)
Title: An electroless copper plating bath
IPC: C23C18/28
Filed: 1966-06-15
Abstract: An electroless copper plating bath comprises 0.00001 to 1.00 parts by weight of Na2S2O3, 0.000080 to 2.400 parts by weight of lower alcohol, in 100 parts by weight of an electroless copper plating solution consisting of CuSO4, formalin, Rochelle salt, NaOH, Na2CO3 and water.  The lower alcohol may be CH3OH, C2H5OH, propyl or isopropyl alcohol, butyl or isobutyl alcohol.  Copper films e.g. 0.3 m  in thickness may be deposited on an acrylonitrile-butadiene-styrene copolymer.
Patent GB-1397447-A (GB)
Title: Surface relief holograms
IPC: G03H1/02
Filed: 1972-06-09
Abstract: 1397447 Surface relief holograms SIEMENS AG 9 June 1972 [29 June 1971] 26920/72 Headings G2J and G2X A surface relief hologram is formed in a surface of a recording medium 4 on a carrier support 3, a reflective layer 5 being applied to the surface relief and carrying a further layer 6 of transparent material of high refractive-index than the record medium; the outer surface 8 of layer 6 being flat. Surface 8 may have an anti-reflection coating. The layer 6 may be solid, e.g. a hardenable or thermosetting organic polymerizable material or a glass. Alternatively layer 6, Fig.2, may be a liquid, e.g. an immersion oil, in which case the liquid is enclosed by a transparent outer plate 7 having a flat surface 8. In the step of recording the hologram a layer of uniform thickness and the same refractive index as layer 6 is located between the object and record medium. This layer is removed prior to developing.
Patent GB-225532-A (GB)
Title: Improvements in electric contact plugs
Filed: 1924-11-13
Abstract: 225,532. PathÚ Cinema, Anciens Etablissements PathÚ FrÞres. Dec. 1, 1923, [Convention date]. Controllers, rectilinearly sliding. - A device controlling a motor to be run in parallel with an existing installation for example the illuminating lamp of a home cinematograph comprises an insulating block upon which resistances 11 and control studs 11<a> are arranged. Two leads 5, 6 issue from a casing 14 one being connected to terminals 1, 3 and the other to a conducting rod 9 upon which slides a clock 10 which makes contact with the studs 11<a> through a slot in the casing. The upper stud is insulated to enable the motor &c. circuit to be broken and the lowest stud is connected to the terminals 2, 4.
Patent GB-427774-A (GB)
Title: Improvements in open shed dobby looms
IPC: C22C35/00
Filed: 1934-09-21
Abstract: 427,774. Loom dobbies. GROSSENHAINER WEBSTUHL-UND MASCHINENFABRIK AKT.-GES., Grossenhain, Saxony, Germany. Sept. 21, 1934, No. 27197. Convention date, Sept. 29, 1933. [Class 142 (i)] In order that the double - lift principle may be applied to an open-shed positive shedding dobby, means is provided for moving the harness in the lower shed into an end position defined by stops, and holding it there until the shuttle has been picked. The T-lever is connected to upper linked draw bars 11, 16 and lower linked draw bars 12, 19, each bar making a to-and-fro movement for each change of shed. When a bar 16, or 19 moves to the right, it presses the lever 8 against a stop 33 or 33<1>. In order that the lever 8 may be moved against both stops for the lower shed position, additional knives 37, 42 adapted to engage upper projections on the hooks 9, 10 are each moved to the right by link and lever mechanism when a knife 16 or 19 moves to the left. Each hook is held in the raised position irrespective of whether the needle 26 is raised or lowered until the knife 11, or 12 for operating the other hook has moved to the left. As shown, both hooks 9, 10 are raised, the hook 9 being supported by a support 43 pivoted at 46 and linked to a lever 49<11> adapted to be moved to the left by the knife 12 to free the hook 9, while the hook 10 has been already freed by a similar device controlled by the knife 11. In order to avoid heavy strokes, the lines of hook lugs 91, 101 are arranged at an angle to the draw bars 11, 12 so that the healds are accelerated in succession.