baber/WOPTO huggingface dataset:
Patent GB-802619-A (GB)
Title: Improvements in or relating to the production of phenylhydroxylamine
Inventor: DEBUS ROBERT
Filed: 1957-05-01
Abstract: Phenylhydroxylamine is prepared by hydrogenating nitrobenzene in the liquid phase, in a solution of an inert organic solvent, with molecular hydrogen under pressure in the presence of a finely divided, solid, metallic hydrogenation catalyst at a temperature between room temperature and 130 DEG  C.  The solvent is preferably miscible with water and is preferably easily removed from the final reaction mixture with the minimum risk of decomposing the phenylhydroxylamine.  The solvent may be removed by fractional distillation under reduced pressure or dilution of the reaction mixture with a salt solution in which phenylhydroxylamine is substantially insoluble.  Suitable solvents are dioxan, isopropanol, methanol, cyclohexanol and tertiary butyl alcohol. The concentration of nitrobenzene in the nitrobenzene-solvent is preferably between 5 and 50 per cent by volume.  The quantity of hydrogen used should be less than the stoichiometric quantity, and may be controlled by means of a rotameter or a manometer. Suitable hydrogenation catalysts are e.g. Raney copper or nickel, and they are preferably employed in as large a proportion as possible, and the hydrogenation is preferably carried out with an hydrogen pressure greater than 2 kg/sq. cm. Aniline is formed as a byproduct.  The phenylhydroxylamine prepared by the process of the invention may be used without isolation for the direct production of para-aminophenol.  The reaction mixture after the hydrogenation process is acidified and diluted and then heated, after which the para-amino phenol is separated by neutralization, cooling and precipitation from the aqueous mother liquor. Examples are given illustrating the production of various proportions of phenylhydroxylamine and aniline under different conditions of temperature, pressure, and amounts of hydrogen used, and also of the preparation of para-aminophenol.
Patent GB-574558-A (GB)
Title: Improvements in or relating to the formation and repair of basic refractory linings for furnaces and the like
IPC: F27D1/16
Filed: 1943-08-26
Abstract: The basic refractory lining of a metallurgical apparatus is formed or repaired by mixing together particles of the basic refractory material with a gel-forming agent substantially free from aluminium and constituents reducing refractoriness, moistening the mixture and blowing it into place on the surface to be protected.  The basic material may comprise moderately coarsely-sized hard-burned dolomite and a minor amount of fine magnesite clinker, chrome ore, or forsterite, and the gel-forming agent is preferably a plastic hydrous magnesium silicate found near Hector, California.  0.5-5 per cent of the gel-forming agent is sufficient, since larger amounts may entrap steam or show a plastic flow preliminary to drying.  The swelling of the agent may be enhanced by grinding, using hot water or water softened with sodium carbonate or other alkali, or by incorporating sulphonated hydrocarbons.  Sodium silicate, up to about 3 per cent of the weight of the refractory, may be included in the gauging water or may be incorporated dry into the powdered materials.  The refractory mixture is preferably applied by means of a pneumatic gun.
Patent GB-290258-A (GB)
Title: Improvements in or relating to tyre covers and the manufacture thereof
IPC: B60C5/00
Filed: 1928-05-11
Abstract: 290,258. Howard, J., and Tremble, J. E. May 11, 1927, [Convention date]. Moulding wheel tyres.-A tyre cover foundation is formed from an annular blank 10 of leather shaped into tyre form on a mould 11, Fig. 2, which is fitted with beadshaping rings 12, 13 and clamping-rings 14, 15 secured by bolts 15. The leather is impregnated or coated with filling substances such as gelatine, egg-yolk, glue, oil, wax or grease. The shaped leather band 17 may be fitted with an inner leather liner 18, and is covered on both sides with fabric and rubber layers such as 19, 20, 23, Fig. 6.
Patent GB-1107051-A (GB)
Title: Production of alcohols via the oxo process
IPC: C07C67/00
Filed: 1965-04-01
Abstract: A method of treating the reaction products of the catalytic hydroformylation of an olefin or olefins comprises distilling from the reaction products the aldehydes having one or more carbon atom than the olefins, distilling from the residue so produced volatile organic compounds leaving hydroformylation catalyst in the residue, and hydrogenating the distilled organic compounds so as to produce the corresponding alcohols, which may then be separated from one another by distillation.
Patent GB-1281263-A (GB)
Title: Memory system
IPC: G11B17/00
Filed: 1970-03-23
Abstract: 1281263 Random access memory system EG & G Inc 23 March 1970 [17 April 1969] 13958/70 Heading G5R In a random access memory system, a spiral groove on a disc or cylindrical record carries address information giving access to the memorized information stored either in that groove, or a separate groove or magnetic or optical track. In the arrangement shown for indicating whether a credit card number is listed, the address and memorized information are in the same groove of a disc record 50 read by stylus 21 on pick up arm 17. Radial movement of the pick up is controlled by stepping motor 93 which drives a worm screw 89 to which carriage 41 supporting the arm is coupled and the arm is lowered by a further motor 83 which acts on the arm via a cam driven yoke 75 and shaft 69. During initial calibration the pick up stylus arm is moved to a mid position in which its stylus is over a "home" address on the record to which all other addresses can be related by information stored in address location 33. The number to be checked is entered into the entry unit 32 via buttons 23 and the address component of the number is compared in locator 33 with the home address to provide stepping pulses to motor 93 to move the pick up arm until its stylus is over a position three tracks outwardly from the required address. The arm is then lowered and when the required address is read the information associated therewith is compared with that entered to provide via output indicator 35 the required listed or non-listed information. A stereo record can be employed with the address information in one track and the memorized information in the other. Alternatively the stylus can be lowered approximately ten grooves outwardly from the required address and the turntable driven at say three times normal speed until the required address is obtained. The record, Fig. 7 (not shown), may have two grooves-a fine pitch groove carrying the memorized information and a course pitch groove carrying the addresses. The record is used with a coupled pair of pick up arms one of which is lowered to locate the address whereafter the lowered arm is raised and the other lowered to read the information. The fine pitch groove can be replaced by a series of concentric rings in a magnetizable area in which case the second arm reading the information carries a magnetic transducer head. In a record having a combined rough pitch groove area, fine pitch groove area, and magnetizable area, the address information is stored in the rough pitch groove, the memorized information on spiral tracks on the magnetizable area and the fine pitch groove is used to guide the magnetic transducer scanning the magnetized tracks in which case the second arm carries a stylus for engaging the grooves and the magnetic transducer.
Patent GB-897991-A (GB)
Title: Laminated articles
IPC: H01B3/44
Filed: 1958-05-02
Abstract: An impregnant for a plurality of superposed fibrous sheets constituting a laminate comprises an interpolymer of an unsaturated amide and at least one other monomer having ethylenic unsaturation, said interpolymer having amido hydrogen atoms replaced by the structure: -ROR1 where R is a lower alkylidene radical and R1 is hydrogen or an alkyl radical, R1 in at least some of the structures being alkyl.  The Specification includes lists of amides and of comonomers.  The amide may be polymerized with two other monomers. If one of the monomers is an unsaturated acid, it may act as an internal catalyst for the subsequent curing of the modified interpolymer. The interpolymer may be reacted with a monoaldehyde containing atoms of C, H, and O only in solution in a lower alkanol, e.g. butanol.  A list of suitable aldehydes is given.  Alternatively, the amide may be reacted with an aldehyde and the product etherified before copolymerization with the other monomer or monomers.  The impregnating material may be a mixture of the modified interpolymer with another resin, e.g. a polyglycidyl ether of a polyhydroxy compound, a phenol-formaldehyde resin, an alkyd resin, a polymer or copolymer of a vinyl halide, an epoxidized oil, a melamine- or urea-aldehyde resin, a silicone resin, a polyvinyl acetal resin, a polysulphide resin, polybutadiene, polyvinyl acetate, a cellulose ester, a cellulose ether, or rubber.  A solvent, e.g. a mixture of butanol and toluene, may be present.  The fibrous material may be glass cloth, paper, or natural or synthetic cloth fabrics.  The laminate may be adhered to a thin copper sheet, e.g. by means of an adhesive comprising a butanol-etherified N-methylol derivative of a copolymer of acrylamide and vinyltoluene, a polyamide and an epoxy resin, and the resulting laminates etched to produce printed circuits.  Specifications 826,652, 826,653, 840,325 and U.S.A. Specification 2,458,484 are referred to.  Reference has been directed by the Comptroller to Specification 792,874.
Patent GB-140576-A (GB)
Abstract: 140,576. Becket, W. H. March 5, 1919. Atmospheric gas burners.-In a gas-fire burner in which the mixing- tube B communicates with a hollow structure A provided with nozzles C, the structure A comprises a lower chamber E and an upper chamber D, Fig. 1, or three chambers E, D, F, Fig. 3, connected by one or more slots H formed along or nearly along their entire length, and the chamber D is provided with a bundle of parallel metal rods J, Fig. 1, preferably held in perforated plates K, or a tubular cage of metal rods J, Fig. 3, filled with smooth balls or the like. The reds J and the walls of the chambers and slots are rounded and smooth. The rods J fit or nearly fit the chamber D, and are inserted therein through holes normally closed by plugs N. The chamber D may be provided with oppositely or otherwise arranged internal ridges. When the burner is curved, it may be made in sections bolted together to permit the rods to be inserted.
Patent GB-371629-A (GB)
Title: Improvements in landing gear for aircraft
IPC: B64C25/00
Filed: 1931-05-12
Abstract: 371,629. Aircraftlanding gear. SILVERMAN, J., 2500, Ogden Avenue, Chicago, U.S.A. May 12, 1931, No. 14092. [Class 4.] An aeroplane undercarriage comprises a main landing wheel 14, as shown in the Figure, and an auxiliary landing wheel 15 normally positioned in advance of and above the wheel 14, both wheels being journalled at the ends of a triangular frame 25, 28, 29 pivoted to the fuselage at 26 and further positioned by a compression strut 17 connected to the fuselage by a hinge 21 and to the axle of wheel 14. Hinge 21 is so formed that forward movement of strut 17, and hence of the wheels 14, 15 from the position shown is impossible but rearward movement is permitted to the limit imposed by compression of a spring 20 interposed between telescoping parts 18, 19 of the strut. Two such wheel carrying frames may be employed spaced on either side of the fuselage centre line, the triangular frames being pivoted on a common cross shaft and the pivots 21 being s cured to the wing bracing. These latter may be modified to permit a small amount of lateral freedom. A single leading wheel 15 may be disposed centrally ahead of wheels 14 or any number of leading wheels may be employed.
Patent GB-579952-A (GB)
Title: Improvements in and relating to thread grinding machines
IPC: B24B19/02
Filed: 1944-07-24
Abstract: 579,952. Thread-grinding machines. SOC. GENEVOISE D'INSTRUMENTS DE PHYSIQUE. July 24, 1944, No. 14120. Convention date, Nov. 27, 1943. Addition to 544,324. [Class 60] In a thread-grinding machine in which the carriage is moved in opposite directions against stops for grinding and trueing, the movement is effected by weight-actuated cords, the heavier weight being independently lifted so as to be rendered inoperative when the other weight is to become effective. The carriage 1 is fitted with a lead screw 9 co-operating with a nut 14 and is moved to the right, for the grinding operation, by a cord 16 connected to a weight 19 ; the weight 19 can be independently lifted by a winch 21 when another cord 25, connected to another weight 27, moves the carriage to the left trueing position. The cord 25 is connected to an auxiliary slide 12 engaged by a projection 30 in the nut and abutting against a stop 23 to the right ; the movement to the left is limited by the engagement of the carriage 1 with a stop 7.
Patent GB-529059-A (GB)
Title: Improvements in or relating to air pumps
IPC: F04C18/12
Filed: 1939-05-11
Abstract: 529,059. Rotary air pumps. JOHNSON, J. P. May 11, 1939, No. 14131. Drawings to Specification. [Class 110 (ii)] In a pump of the Roots' blower type, oil from ball-bearings is prevented from reaching the rotors by means of saticer-like throwing discs on the . rotor shafts, the rims of which run within cavities in the casing walls. Oil drains are provided in the cavities. The driven wheel of the gears connecting the rotor shafts has an undercut cavity within which the rim of another saucer-like throwing disc on the shaft rotates. Oil is supplied to this disc and delivers it to the cavity from which it passes to the tooth spaces through oil holes. The amount of oil supplied to the disc is determined by the clearance between a pin, carried at the end of the rotor shaft, and a bushing in the casing to which oil is freely supplied. In manufacture, the driven wheel is frictionally held to its rotor shaft until the intermeshing of the rotors is correct and is then permanently held in position by pins or rivets. Each rotor shaft has a splined portion of larger diameter engaging one end of its rotor and a smaller smooth portion with a flange that engages an internal shoulder of the rotor.
Patent GB-1277386-A (GB)
Title: Improvements in rotary-scythe lawn-mower cutters
Inventor: SVENSSON ERNST STURE LENNART
IPC: A01D34/73
Filed: 1971-05-11
Abstract: 1277386 Rotary-scythe lawn mower cutter FLYMO SA 11 May 1971 14193/71 Heading A1F A rotary-scythe lawn mower cutter consists of two overlapping blades attached to a vertical drive shaft by means of a bolt, sleeve, and washer. The blades are connected to one another by a friction clutch, consisting of rivets 6, 7 and holes 4, 5, whose purpose lies in the prevention of shaft damage if the blades are suddenly stopped by an obstacle.
Patent GB-1443091-A (GB)
Title: Sheet feed apparatus
IPC: B65H5/36
Filed: 1974-03-30
Abstract: 1443091 Sheet - feeding apparatus CHAMPION INTERNATIONAL CORP 30 March 1974 14246/74 Heading B8R Sheets cut from web 10 are passed by feeding apparatus 1 into the nip of belts 5 and 6. The apparatus 1 comprises an upper guide 20 and a fixed table 14a, and the guide is moved horizontally over the table in synchronism with the rotation of cutter 11, so as to avoid clashing with the cutter. The guide 20 may be duplicated to lie at each side of the table 14a, and each guide 20 may be flanked by belts 6.
Patent GB-1529125-A (GB)
Title: Cement manufacturing process and apparatus
IPC: F27B15/00
Filed: 1977-04-05
Abstract: 1529125 Cement manufacture ISHIKAWAJIMA-HARIMA JUKOGYO KK 5 April 1977 [6 April 1976] 14346/77 Heading C1H [Also in Division F4] In a cement manufacturing process comprising the steps of preheating and calcining cementmaking materials, non-combustible and combustible cement making materials are supplied separately in such relative quantities that the heat energy contained in the combustible materials is less than that required to preheat and calcine all the materials completely, and the necessary additional heat is supplied in an auxiliary fuel burner, the fuel supply to which is automatically controlled in dependence on the temperature of the calcined material. The calcined material is then burnt in a kiln and the product cement cooled in a clinker cooler. The non-combustible, calcareous materials are preheated separately from the combustible materials, e.g. oil shale, using hot gases from the kiln, clinker cooler, calciner or auxiliary burner and are then mixed with the combustible materials in the calciner. Fig. 1 depicts a kiln 2 and calciner 3 provided with an auxiliary burner 6 which is controlled through a supply valve 8 in dependence upon a temperature sensing device 7 responsive to the temperature of the gases leaving cyclone 14, and thus indirectly responsive to the temperature of the material leaving the calciner. The combustible materials are fed at 5 into the calciner, which receives the heat at 11 and 12 from the kiln and clinker cooler, respectively. The non-combustible material introduced at 4 is preheated by the waste gases in a series of cyclones. The calciner is of turbulent counter-flow type. In Figure 2 (not shown) calciner (3) is of the turbulent concurrent type receiving only the hot air from the clinker cooler whereas the combustion gases from the kiln (2) are fed to the lowermost cyclone (14). The calciner of Figure 3 (not shown) is of the concurrent type and the combustion gases from the kiln (2) are fed into the lowermost cyclone (14) through a duct (3) which itself constitutes the calciner.
Patent GB-544141-A (GB)
Title: Improvements in temples for looms for weaving
IPC: D03J1/22
Filed: 1940-09-21
Abstract: 544,141. Loom temples. WALKER, J. Sept. 21, 1940, No. 14422. [Class 142 (ii)] A bracket 1 is provided to house one or more barrels 4 together with anti-friction or revoluble rollers 11 arranged one on each side of the barrel or each of the barrels 4. The barrels and rollers are mounted in slots 3 in the bracket so that they can be adjusted vertically and locked in the adjusted position. The fabric passes under the rollers 11 and over the barrels 4. The barrels have spiked revoluble rings 5.
Patent GB-185178-A (GB)
Title: Improvements in and relating to wireless signalling systems
IPC: H01Q11/02
Filed: 1921-05-24
Abstract: 185,178. British Thomson - Houston Co., Ltd., (General Electric Co.). May 24, 1921. Undesired signals, eliminating; directive signalling; aerials.-In a system using a long horizontal unidirectional aerial, for instance that described in Specification 175,315, the effect of signals coming from undesired directions is elimmated by impressing on the receiving apparatus currents of equal magnitude and opposite phase to those produced in the antenna by such waves. As shown in Fig. 2, signals are led from a desired point in the antenna to the receiving apparatus through lines 9, 10. The lines are loaded with inductances &c. 15 and the mid-points of the secondary of transformers 5 and primary of transformer 6 are earthed through resistances 13, 14 to eliminate inductive effects between the lines 9. 10 and the antenna, and effects of lines 9, 10 acting as an antenna. Undesired signals are taken from a tapping on resistance 7 to a phase rotater and impressed through transformer 16 on the receiving apparatus. Another method of eliminating undesired effects in the lines 9, 10 consists in crossing the lines at intervals. The resistance 7 is preferably equal to the surge impedance of the antenna to prevent reflection.
Patent GB-569701-A (GB)
Title: Lubricant for textiles
IPC: D06M13/08
Filed: 1943-09-06
Abstract: Textile materials, prior to or during mechanical processing, are lubricated by applying thereto a lubricant consisting of or containing one or more chlorinated paraffin hydrocarbons containing from 10 to 22 carbon atoms and from 2 to 7 chlorine atoms in the molecule.  The preparation of a chlorinated paraffin oil, corresponding to an average chain length of 18 carbon atoms, is given.  The chlorinated paraffins may be mixed with other usual ingredients such as neat's-foot oil, olive oil, oleine, or wool grease.  The lubricants may be thinned with diluents such as kerosene, or they may be used in the form of aqueous emulsions. The textiles are particularly those containing animal hairs including synthetic, or of regenerated cellulose, cellulose esters or ethers, in the form of loose fibres, yarn, fabric, &c. Specification 514,821 is referred to.
Patent GB-882173-A (GB)
Title: Improvements in semi-conductor devices
IPC: H01L27/06
Filed: 1957-11-22
Abstract: 882,173. Semi-conductor devices. PHILIPS ELECTRICAL INDUSTRIES Ltd. Nov. 22, 1957 [Nov. 27, 1956], No. 14546/61. Divided out of 882,172. Class 37. A double-emitter transistor suitable for use in the circuits illustrated in the Figures, operation of which is described in Specification 882,172 (see Group XL (c)), from which the present Application is divided, consists of two emitter zones of one conductivity type separated by a thin base zone of opposite conductivity type from a collector zone of said one conductivity type, the reverse breakdown voltages of the two emitter-base junctions being substantially less than that of the collectorbase junction. Such a device, Fig. 4, is made by vapour diffusion of donors into a high-restivity P-type crystal to form an N-type base zone of lower resistivity on which P-type emitter zones are subsequently formed by alloying. The base contact 11 is dispensed with in an alternative embodiment.
Patent GB-1529947-A (GB)
Title: Ultra-sonic intruder alarms
IPC: G08B29/14
Filed: 1976-07-09
Abstract: 1529947 Ultrasonic intruder alarm system MUNFORD & WHITE Ltd 9 July 1976 [9 April 1975] 14626/75 Heading G4N An ultrasonic intruder alarm system includes a number of ultrasonic detectors 10 each connected to a control panel 1 for the transmission of an alarm signal 6 thereto and each having an individual latching circuit 11 and an individual indicator 13 operable to show the condition of the latching circuit, the system also comprising switching means operable to inhibit response of unlatched detectors to an alarm condition while leaving in its unlatched condition any detector which had not already latched at the time of operation of the switching means. As described the control panel is connected to the detectors by common lines 4-7. Wire 5 carves a signal from an oscillator 8 via a gate 9 to detectors 10 and lamp control circuits 12. Operation of a detector 10 unbalances a resistive bridge 14-17 to operate a detection circuit 18. When the system is set up, switches 20 and 21 (located near the exit) are in their INITIAL SET and OFF positions respectively: operation of a detector 10 causes a signal from circuit 18 to pass to an unlatching circuit 22 which after a few seconds unlatches the operated detector via line 4. An audio test indicator 23 and the corresponding lamp 11 are also operated. In use, switch 21 is moved to its FINAL SET position: now the signal from circuit 18 passes to a panel latch circuit 24 which blocks gate 9 (so that the operation of further detectors is inhibited), inhibits circuit 22, operates bells and dials an alarm signal. A D.C. signal is also applied from a circuit 27 to inhibit the lamp 11 at the operated detector. Unlatching of the latched detector is effected by means of a further switch 25. Gate 9 may be replaced by a manually operable switch. The system may be set to an unlatched condition by means of switches at the control panel or exit for a timed period to enable an operator to enter and leave without setting off an alarm. A low-level audio tone may be generated during this period. CMOS logic maybe used.