baber/WOPTO huggingface dataset:
Patent GB-249676-A (GB)
Title: Improvements in or relating to garden and road rollers
IPC: A01B29/02
Filed: 1925-03-24
Abstract: 249,676. Robinson, A. S. F. March 24, 1925. Force-transmitting mechanism.-In a pedaldriven garden roller a brake 73 is operated by a lever 65 through a flexible connection 69 and a pivoted member 70 provided with a roller 71 engaging a spring-controlled pivoted member 72 carrying the brake block 73. The lever 65 also operates mechanism for moving clutch levers out of range of a cam on the steering-fork 11. Specifications 26937/09 and 130,487, [both in Class 6 (i), Cultivating implements &c.], are referred to.
Patent GB-930056-A (GB)
Title: Improvements in or relating to aromatic peroxy acids
IPC: C07C409/38
Filed: 1962-03-01
Abstract: The invention comprises p-t-butyl-, o-nitro-and p-cyano-perbenzoic acids and a process for preparing perbenzoic acid which may be substituted by NO2, CN, F, Cl, Br, alkyl or a further CO.O2H.  The process comprises contacting the appropriate benzoic acid or its alkyl ester with H2O2 in alkanesulphonic acid at 10-60 DEG C.  In the examples, the unsubstituted and the p-t-butyl-, o- and p-nitro-and p-cyano-perbenzoic acids are prepared from the benzoic acids; diperterephthalic acid is prepared from terephthalic acid or its dimethyl ester.  Methanesulphonic acid is preferably used in the process; ethanesulphonic acid is also mentioned.
Patent GB-550237-A (GB)
Title: Improvements in or relating to coating compositions comprising resinous vehicles
IPC: C09F9/00
Filed: 1941-06-27
Abstract: 550,237. Coating compositions. DUPONT DE NEMOURS, & CO., E. I., GOWING, D. M., and SANDERS, P. F. June 27, 1941. No. 8091. [Class 2 (iii)] A coating composition comprises an alkyd resin of acid value not less than 10, at least two driers selected from the class consisting of cobalt, manganese and lead soaps, and a small proportion of diphenyl guanidine or α- or #- triphenyl guanidine. The effective range for diphenyl guanidine or triphenyl guanidine content of the composition is 0.1 per cent. to 10 per cent. by weight based on the resin content, and the preferred range is 3 per cent. to 5 per cent. Examples are given of enamels comprising oil-modified alkyd resins, cobalt, manganese and lead naphthenates, petroleum naphtha, diphenyl guanidine, and pigments such as carbon black, antimony oxide and titanium oxide. Specification 504,806 is referred to.
Patent GB-787745-A (GB)
Title: Process for removing weakly acidic substances, especially mercaptans, from hydrocarbon fluids
IPC: C10G19/04
Filed: 1954-03-19
Abstract: Weakly acidic substances, particularly mercaptans, are extracted from hydrocarbon fluids, using aqueous alkali metal hydroxide solutions (M.O.H.) in combination with the particular concentration of solutizer which when contacted with M.O.H. forms an aqueous alkali metal hydroxide phase and an alkali metal hydroxide and solutizer phase (M.O.R.), the mercaptan being concentrated in the solutizer phase and subsequently the acidic substance is stripped therefrom. The procedure of extraction may be performed as follows: (a) The weakly acidic substances are stripped with M.O.H. solution, the acids are concentrated in the M.O.R. phase by mixing the phases and then the acids are stripped from the M.O.R. phase and the solutions recirculated.  (b) In removing acids such as heavy mercaptans the solutizer phase is the extracting phase and this is fortified after stripping with the M.O.H. phase.  (c) The both phases may be used together, or separately, successively or simultaneously.  The method of the invention is also applicable to the regeneration of fouled aqueous alkali metal hydroxide solutions.  The prior art use of solutizer solutions is discussed in connection with U.S.A. Specifications 2,059,075, 2,066,925, 2,149,379, 2,149,380, 2,151,722, 2,151,723, 2,152,166, 2,156,577, 2,164,851, 2,168,078, 2,202,039, 2,223,789 and 2,229,995.
Patent GB-416728-A (GB)
Title: An improved process for extracting metals from ores
IPC: C22B5/00
Filed: 1933-03-17
Abstract: Non-ferrous metals are obtained in the form of conglomerated coarse particles from ores of a sulphidic or arsenidic nature which contain iron or are mixed with iron or iron compounds by heating the ores in a non-oxidizing atmosphere at a temperature substantially below their melting points.  The process may be carried out in a stream of an inert gas such as nitrogen, or a reducing gas or a mixture of such gases.  Suitable reducing gases are hydrogen, carbon monoxide, illuminating gas, water gas &c., with or without steam.
Patent GB-1058276-A (GB)
Title: Gear pumps and motors
Inventor: WEAVER CEDRIC DAVID
IPC: F04C2/12
Filed: 1964-02-27
Abstract: 1,058,276. Gear pumps and motors. DOWTY HYDRAULIC UNITS Ltd. Feb.10, 1965 [Feb.27, 1964], No.8231/64. Heading F1F. A tandem gear pump or motor unit comprises a common centre block (12), Provisional Specification drawing (not shown) having bushes (13, 14) for the gears (32, 30) of one pump or motor and bushes (15, 16) for the gears (25, 27) of the other pump motor and closure casings (17, 18), one for each pump or motor, fitting upon the centre block and carrying respectively further bushes (21, 22) for the gears (32, 30) and further bushes (23, 24) for the gears (25, 27). A single input or output shaft (26) is connected to or formed with the gear (25) and a bar 39, which may be hexagonal in section, connects the coaxial idler gears (27, 30) whilst the gear (32) in mesh with the gear (30) and coaxial with the gear (25) is unconnected with this latter gear. The high pressure side of the pump or motor is connected to chambers (33, 34) behind the further bushes radially outwards of sealing rings (35, 36) and the low pressure side to spaces radially inwards of the sealing rings so that the further bushes are urged into sealing contact with the gears without tilting of the gears. The bushes may all be separate or some or all may be integrated in pairs. The centre block (12) is die-cast from, e.g., aluminium, zinc-based alloy or aluminiumtin alloy and the bushes (13 ... 16) are made from a different material, e. g., lead bronze and built into the centre block. Operating as a pump unit, liquid is supplied through a common inlet and discharged from the two pumps through separate outlets. Operating as a motor unit, pressure liquid from two separate sources may be supplied to each motor whilst the discharge therefrom is connected to a common outlet.
Patent GB-1091753-A (GB)
Title: Improvements in or relating to a high pressure safety valve
IPC: F16K17/10
Filed: 1966-02-24
Abstract: 1,091,753. Valves. DRESSER INDUSTRIES Inc. Feb. 24, 1966 [Feb. 24, 1965], No. 8304/66. Heading F2V. A high-pressure safety valve includes a valve body 28 having a bore 30 providing an inlet passage in one end of the body, a removable tubular member 44 extending into the other end of the body in alignment with the inlet passage and received in an outlet passage, the tubular member at its inner end providing a valve seat 43 and a valve closure member 42 slidable within an apertured sleeve 34 to co-operate with the seat, the closure member 42 and tubular member 44 being axially withdrawable through the outlet passage. The closure member forms a leaky piston in a cylindrical guide 34 having ports 60 to admit inlet fluid and is biased towards its seat by a spring 45. The space 48 beneath the closure member is connected by a passage 52 to a solenoid actuated pilot valve which relieves the pressure in the space 48 when the closure member 42 is to be opened. A flanged member 76 having a pair of drain passages 92 for moisture has a C-shaped member 84 on its lower face to provide wedging pressure on a seal 86 in a counterbore 74. Slots 90 enable the bushing 44 to be removed by a wrench for servicing of the valve seat while a threaded opening 94 in the closure member permits it to be removed by an elongated tool. The body 28 may be welded to the outlet of an isolation gate valve on a steam superheater or superheater header and be used in conjunction with a main spring-loaded valve lifting at higher pressure.
Patent GB-278025-A (GB)
Title: Improvements in or relating to confections
IPC: A23G3/20
Filed: 1926-03-26
Abstract: 278,025. Salerni, P. M. March 26, 1926. Confectionery.-In the manufacture of chocolate liqueurs or similar confections containing alcoholic liquid, in order to prevent the liquid from dissolving sugar from the shell or casing, the casing is provided with a lining or interior coating of a substance such as a cacao butter prior to the introduction of the liqueur or liquid. The lining is applied by introducing cacao butter or the like into the casing to cover the interior surface and then removing all the cacao butter with the exception of a layer which remains upon the inside of the casing. The introduction of the cacao butter may be effected by a nozzle inserted through the casing, surplus cacao butter being withdrawn through the nozzle; after introduction of the liquid the hole is closed as by the insertion of chocolate with cacao butter applied thereto.
Patent GB-541143-A (GB)
Title: Improvements in or relating to processes for working-up aqueous formaldehyde solutions
IPC: C07C47/04
Filed: 1940-05-09
Abstract: 541,143. Distilling formaldehyde. BRITISH CELANESE, Ltd. May 9. 1940, No. 8337. Convention date, May 9, 1939. [Class 32] Formaldehyde is recovered from dilute solutions thereof by fractionating the solution in a column under super-atmospheric pressure and carrying the formaldehyde out of the column by means of a current of inert gas. The formaldehyde is recovered by passing the vapours and gas into an absorber where they are brought into direct contact with an absorber liquid e.g. water, methyl alcohol, methylal. A 1 per cent. solution of formaldehyde is fed at 80‹F. at the rate of 17,600 lbs. per hour into the tenth tray of a fractionating column operating at 15 lbs. per sq. inch, 2,230 cubic feet per hour of natural gas being fed to the third tray. 176 lbs. per hour of formaldehyde were carried off to the absorber through which water was passed in counter current at the rate of 292 lbs. per hour.
Patent GB-805060-A (GB)
Title: Improvements in and relating to electron discharge valve trigger circuits
Inventor: BECKETT FRANK
IPC: H03K3/12
Filed: 1957-03-13
Abstract: 805,060. Multi-stable state circuits. ERICSSON TELEPHONES Ltd. March 13, 1957, No. 8358/57. Class 40(6). A bi-stable trigger circuit comprises a pair of discharge tubes reciprocally coupled between their anode and control grids with separate cathode resistors for each tube, the voltage excursions of the control grids are limited in either direction by two clamping circuits each comprising a pair of rectifiers. The input trigger pulses are applied to the junction of one pair of rectifiers which is also connected via a fixed resistor to a point of datum potential. The Figure shows a bi-stable circuit in which the excursions of the control grids of tubes V1, V2 are limited in a positive direction by a clamp circuit comprising diodes D1, D3 and from falling below a potential of minus 15 volts by the clamp circuit comprising diodes D2, D4. If initially tube V1 is conducting and V2 cut off a negative trigger pulse applied at terminal T6 will be effective via diode D1 to cause tube V1 to be cut off and thus V2 to conduct, a second negative trigger pulse will be effective via diode D3 to reset the trigger circuit. Output pulses may be derived at terminal T3 from across the cathode load of tube V2 and the trigger may be set to any given state by applying trigger impulses to either terminals T1, T2, i.e. to the suppressor grid circuits of either tubes V1, V2. Output may also be taken from terminals T7, T8 and a cascaded connection of such bi-stable circuits may be connected in a chain to count on any required scale.
Patent GB-538153-A (GB)
Title: Improvements in or relating to low temperature equipment for storage of non-ferrous metal rivets, pressings and other parts made of light alloys
IPC: B21J15/10
Filed: 1940-05-10
Abstract: 538,153. Refrigerators. SEARLE, R., and BRIGINSHAW. F. F. May 10, 1940, No. 8456. [Class 29] Non-ferrous alloy rivets, pressings &c. are maintained in ductile condition between bulk cold storage and manufacturing- operations or between stages of manufacture by storage in small quantities in heat-insulated boxes fitted with cooling means preferably in the form of sealed containers of pre-frozen liquid. A suitable box; Fig. 1, is provided with curved-bottom trays 5 for rivets supported above a sealed cooling unit, and with a thermometer, having an external dial 4. For castings, an upright box on skids or small castors may be employed, with a vertically disposed cooling unit. The cooling-units may be re-frozen on trays or shelves of an ordinary refrigerator.
Patent GB-142984-A (GB)
Title: Improvements in supports or standards for lathe beds
IPC: B23Q1/01
Filed: 1919-04-04
Abstract: 142,984. Smith, A. April 4, 1919. Turning.- Standards for supporting beds are formed tapering upwards to facilitate moulding and with a surrounding channel 3 located as shown to support a cutting tray 4. An auxiliary tray 5 is formed with side members 5<b> spanning the standard and a central member passing through it, and serves to catch lubricant and deliver it to the tray 4.
Patent GB-717537-A (GB)
Title: Magnetic impulse record carriers
IPC: C04B35/26
Filed: 1952-04-03
Abstract: A magnetic impulse record carrier comprises a layer of non-magnetic binding agent in which is dispersed a powdered magnetizable mixture of oxides of metals belonging to the sub-groups of the periodic system beginning with the elements scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper and zinc, which mixture is prepared by acting with an alkali or oxidizing agent in an alkaline medium on the insoluble precipitate from a solution of compounds of the metals. In one example, sodium hydroxide acts in a solution of nickel, cobaltous, ferrous and ferric sulphates.  In another, the precipitate obtained when dilute caustic soda solution is added to a solution of ferrous and manganous salts is oxidized with potassium nitrate.  In other examples a solution of ferrous and nickel sulphates is stirred into a solution of sodium carbonate and a solution of caustic soda and sodium nitrate is added; to ferrous and cobalt sulphates treated with ammonia, sodium hydroxide and sodium nitrate are added; and to ferric, ferrous and cobalt sulphates treated with ammonia, sodium nitrate is added. The mixtures may be oxidized at raised temperatures not greater than 500 DEG C. Specification 466,023 is referred to.
Patent GB-642587-A (GB)
Title: Method and apparatus for deriming a countercurrent heat exchanger to remove impurities deposited therein by a gaseous mixture
IPC: F25J3/08
Filed: 1947-03-31
Abstract: 642,587. Air separating. ELLIOTT CO. March 31, 1947, No. 8613. Convention date, April 18, 1946. [Class 8(ii)] A method of deriming a counter-current heat exchanger in which a rime depositing gaseous mixture in one passage is cooled by indirect contact with a cold gas in another passage comprises stopping the flow of gaseous mixture to the exchanger, warming said cold gas before it reaches the exchanger and directing the warm gas in reverse direction through the cold gas passage and then in reverse direction through the passage requiring deriming. As shown, air to be separated in a column 14 is deliverd by a compressor 9 to a drier 65 before passing a valve 67 and traverseing warm and cold ends 3, 4 of a countercurrent heat exchanger B, having tubes 5 in which water and carbon dioxide ice are condensed. Cold nitrogen gas from the separator head traverses ducts 21, 22, 41 or valve 66 and the exchanger B and is dis-. charged partly to atmosphere through ducts 48, 49 and a valve 72, and partly through a duct 53 to compressors 27, 28 as explained below. To switch to an exchanger A and to derime the exchanger B, the valves 62, 74 are opened and the valve 66 closed for two or three minutes to allow air from a duct 73 to flow reversely through the cold end 4 of the exchanger B to warm the same. Valves 56, 57 are then opened and valves 67, 68, 72 and a valve 69 closed which results in stopping the air flow through the exchanger B and allowing nitrogen from the warm end 1 of the exchanger A, warmed by a heater 26 if necessary, to pass reversely through the exchanger B past the open valve 74 to flow reversely along the normal air ducts 5 to derime the same. This nitrogen is discharged past a valve 58 into the outlet duct 19. Oxygen gas is separated in the column 14 by liquid nitrogen reflux from a duct 16 cooled by nitrogen from the duct 21. This nitrogen serves as cooling agent in an exchanger 24 after which the nitrogen is joined by nitrogen from the duct 49 and is compressed at 27, 28. This compressed nitrogen is in part fed to a reboiler 18 and in part to a duct 38 where it is joined by compressed nitrogen which has traversed an exchanger 33, a turbo-expander 36 and the duct 22. Oxygen gas is discharged through a duct 19.
Patent GB-678047-A (GB)
Title: Improvements relating to coal cutting machines
IPC: E21C25/54
Filed: 1950-04-05
Abstract: 678,047. Mining machines. BERTRAND, R. April 5, 1950. [April 6, 1949] No. 8615/50. Class 68 (i). In a mining machine that severs coal from the seam by flexible cutter means, the coal falls into a collecting receptacle behind the cutter means. The machine comprises a cable-drawn carriage 2 that is guided along the face of the seam and from the carriage there extends, in a plane perpendicular to the face, an endless cutter chain 1 or cable which cuts in the buttock of the face a kerf having the shape of a right angle triangle. The severed coal falls onto a collector plate 7 and is guided rearwardly along said plate by a board 10 until it is loaded into a reciprocating scoop 12 having a hinged bottom for discharging purposes.
Patent GB-263661-A (GB)
Title: Cleaner and paint remover
IPC: C09D9/00
Filed: 1926-03-30
Abstract: 263,661. Todd, V. J. March 30, 1926. No Patent granted (Sealing fee not paid). Cleansing-compositions comprise an alkali, a binder, and the following solvents, methyl, ethyl, butyl or amyl alcohol, turpentine, ammonia, acetone, and carbontetrachloride, with or without a chloride of lime bleaching composition, an odorant such as anise oil, and a softener or lubricant such as glycerine. The alkali may be potash, and the binder corn-flour or sodium silicate. Amyl acetate may be added.
Patent GB-590003-A (GB)
Title: Flexible exhaust line joint
IPC: F16L27/10
Filed: 1945-04-09
Abstract: 590,003. Pipe joints. DEHN, F. B. (Solan Aircraft Co.). April 9, 1945, No. 8728. [Class 99 (i)] A flexible joint for internal-combustion engine exhaust circuits of the ball-and-socket type, Fig. 1, has an annular packing 21 of fine filamentary corrosion resistant metallic material harder than the ball components 15 or 19 and serving as a seal, positioned on an equator of the ball component 15, being compressed between the socket member 16 and the annular ring 22 both of which have spherically formed surfaces bearing on the ball 15 either side of its equator so that relative axial movement between the tubes 10 and 17 or 11 and 18 is prevented. The tube 18 has an annular trough 27 containing the packing 26 attached to it so as to form a telescopic joint between the tubes 17 and 18. The bell portions 23 of the tubes have slots 25 cut at an angle so that by rotating the annular ring 22 the compression of the packing may be varied. In a modification, Fig. 3, the packing 21 b is let in annular grooves in the ball members both of harder material than the sockets and the telescopic seal is formed by the sleeve 32, having a large area of contact with tube 17b and being welded to the tube 18b. Materials that give good results are stainless steel or those known under the Registered Trade Marks " Inconel " and "Hastelloy."
Patent GB-1366616-A (GB)
Title: Low input impedance amplifier circuit
IPC: G06V10/10
Filed: 1972-02-25
Abstract: 1366616 Character recognition systems INTERNATIONAL BUSINESS MACHINES CORP 25 Feb 1972 [8 March 1971] 8757/72 Heading G4R [Also in Division H3] In a character-recognition system a document 30 is scanned by means of a linear array of light emitting diodes 40 turned on sequentially by means of scan ring 50. The second direction of scan is obtained by movement of the document 30 or the array 40. The light reflected from the document is measured by means of photodiode 10 which is coupled via a low input-impedance amplifier (see Divisions H3-H5) to one input of a differential amplifier 60. A monitoring photo-diode 10 measures the light emitted from the source 40 and its output is coupled via a second low input-impedance amplifier to the second input of differential amplifier 60, thereby compensating for variations in the intensity of illumination. The signal from differential amplifier 60 is fed to a video digitizer 65 which develops one or another output value according as the light is reflected from the background area of document 30 or a character; the output is then passed to recognition logics 70 which develops signals indicating the identity of the characters scanned, and thence to utilization device 75, e.g. a computer.
Patent GB-795819-A (GB)
Title: Improvements relating to corrosion-preventive compositions
Inventor: PAYNE JOHN
IPC: C11D3/20
Filed: 1955-03-25
Abstract: Compositions for preventing corrosion of metals by moisture consist of a finely divided alkali metal benzoate dispersed in a water-insoluble medium comprising an ester of a polyhydric alcohol with a carboxylic acid containing a chain of at least ten carbon atoms.  The ester may be a pure ester of an alcohol such as glycerol, ethylene glycol or diethylene glycol, or it may be a naturally-occurring oil or fat.  Suitable oils are arachis oil, olive oil, neatsfoot oil, soya bean oil, castor oil, cotton-seed oil, linseed oil and fish-liver oils.  The benzoate is preferably sodium benzoate.  The concentration of benzoate in the mixture as applied is from 2 per cent to 10 per cent but concentrates containing up to 60 per cent can be prepared and later diluted with mineral oil or grease.  The concentration of ester can be from 40 to 120 per cent of the concentration of the benzoate. Other components such as sodium nitrite and lanolin or wool fat may be included.
Patent GB-767187-A (GB)
Title: Improvements in or relating to the preparation of polychlorophenols
IPC: C07C37/62
Filed: 1955-03-25
Abstract: Polychlorophenols are prepared by alkaline hydrolysis of a polychlorobenzene in aqueous solution with alkali hydroxide or NaOH.Na2 SO4,NaCl triple salt, dissolving the product in water, filtering, and acidifying (preferably to pH >3) to precipitate the product.  Examples are given in which pentachlorophenol of varying degrees of purity is obtained by the hydrolysis of crude C6Cl6 in aqueous caustic soda, or above triple salt, with acidification, partially or completely, of the filtered product.
Patent GB-314121-A (GB)
Title: Improvements in or relating to lifting jacks
IPC: B66F3/10
Filed: 1928-03-23
Abstract: 314,121. Lake & Elliot, Ltd., and Rubury, J. M. March 23, 1928. Jacks. - To prevent rotation of the crutch or other vertically sliding part of a screw jack it is connected to the operating handle by an anchoring bar or the like. The inner screw j, Fig. 2, of a multiple screw jack has a crutch head l fitted with a pair of lugs m connected by an anchoring bar n to a sleeve q on the handle d. A collar s, Fig. 5, may be fitted to the upper or, .as shown, to the lower end of the screw j and is anchored to the handle, by a bar n. The handle d, Fig. 6, engages the stub shaft a carry- ;ing a pinion b engaging a bevel wheel f in a casing u slidably mounted on the screw i by means of a key v and acting as an anchoring member.