baber/WOPTO huggingface dataset:
Patent GB-551355-A (GB)
Title: Improvements in or relating to the control of magnetic circuits
IPC: H01F7/02
Filed: 1941-11-21
Abstract: 551,355. Permanent magnets. JOHNSON, L. Nov. 21, 1941, No. 14984. [Class 35] [Also in Group XXXVI] The strength of a magnetic circuit containing a fixed permanent magnet is varied by means of a controlling permanent magnet mounted in proximity to the fixed magnet and rotatable about an axis at right angles to the direction of magnetization of both magnets and equidistant from the poles of each. In the form shown, which is designed for testing a body for cracks by applying a suspension of magnetic powder to the magnetized body, the magnetic circuit comprises fixed magnets 13 joined by a yoke 11 and provided with pole-pieces 14. A shaft 22, rotatable by hand wheel 30, passes through the magnets 13 and carries two pairs of controlling magnets 23, 24 disposed on opposite sides of the magnets 13 and separated from them by ball-races 25. All the magnets are discs magnetized diametrically and the total strength of the controlling magnets is made greater than that of the fixed magnets so that as the shaft is rotated 180 degrees from the assisting position shown, the field between the poles varies from a maximum in one direction to a smaller value in the reverse direction. Portions 12, 15 of the yoke and pole-pieces are shaped so as to embrace the magnets 23, 24 with as small a gap as possible. Pole-shoes 17 are slidable on the poles 14 and clamped by screws, 20 ; they are shaped like vice-jaws and have a top groove 18 to carry wire test-pieces. A tray 31 collects the surplus testing liquid. The arrangement may be applied to magnetic chucks. According to the Provisional Specification, the magnets may be rectangular and the shaft 22 may be turned through gearing, or each pair of magnets may be carried on independent shafts.
Patent GB-818864-A (GB)
Title: Process for the production of ureas
Inventor: APPLEGATH FRED
IPC: C07C273/02
Filed: 1956-05-15
Abstract: Urea and N : N1-disubstituted ureas are prepared by heating under pressure a mixture of carbon monoxide, sulphur and ammonia or a primary amine of the formula RNH2 in which R is an alkyl, cycloalkyl, aralkyl or alkenyl group.  The reaction pressure is preferably that developed autogenously by the mixture of reactants employed, but is also preferably not in excess of 250 p.s.i.  Temperatures of between 70 DEG  and 160 DEG  C. may be used, the range 90 DEG  to 100 DEG  C. being preferred for urea formation and the range 120 DEG  to 140 DEG C. being preferred for the preparation of N-substituted ureas.  The mol. ratio of ammonia and sulphur is preferably from 2 : 1 to 3.5 : 1, a preferred ratio being 2.5 : 1. For the preparation of urea a small quantity of hydrogen sulphide is preferably added to the other reactants.  The reaction is preferably conducted in the presence of an inert solvent such as methanol, ethanol, isopropanol, amyl alcohol, ligroin, ethyl ether, isopropyl ether, isopropanol/water ethylene glycol, b -methoxyethanol, triethylamine, pyridine, N : N-dimethyl aniline, N : N-diethyl diethanolamine, tetrahydrofurfuryl alcohol, formamide, carbon tetrachloride, trichloroethylene, benzene, cyclohexane and cyclohexene.  The urea preparation may be adapted to continuous working in which a heated solution of ammonia and sulphur in a volatile, inert organic solvent is continually introduced into the head of a reaction zone, into the foot of which carbon monoxide is continually introduced under sufficient pressure to enable it to flow upwardly, a solution of urea in organic solvent is continually removed from the foot of the reaction zone and the solvent continually separated from the urea and recycled to the reaction zone after further heating and addition of ammonia and sulphur.  The examples describe the preparation of urea, N : N1 - dimethylurea, N : N1 - diethylurea, N : N1 - di - n - propylurea; N : N1 - di - isopropylurea, N : N1 - di - isobutylurea, N : N1 - di-secondary butylurea, N : N1 - di - tert. butylurea, N : N1 - di - n - amylurea, N : N1 - di - n-hexylurea, N : N1 - di - n - octylurea, N : N1 - di-tertiary octylurea, N : N1 - di - n - decylurea, N : N1 - di - n - dodecylurea, N : N1 - di - n-tetradecylurea, N : N1 - di - n - octadecylurea, N : N1 - di - allylurea, N : N1 - di - methallylurea, N : N1 - di - cyclohexylurea, N : N1 - di - benzylurea and N : N1-di-a -methylbenzylurea.
Patent GB-1455647-A (GB)
Title: Teaching machine for pere
IPC: G06Q50/00
Filed: 1974-04-05
Abstract: 1455647 Educational appliances BASF AG 5 April 1974 [7 April 1973] 15218/74 Heading G5G In a teaching machine including presentation means, e.g. projector 11 and a tape recorder 4, for the visual and/or audio presentation of a branched teaching program consisting of teaching sequences stored in at least one information carrying medium, actuation of one of a plurality of answer keys A, B, C, D results in the advance or reversal of the medium through the presentation means either in dependence upon a "branching" signal a derived from the program, whereby the student is presented with further information in that branch of the program appropriate to his answer, or in dependence upon signals b or c which control the presentation means so that the information carrying medium is moved a predetermined fixed number of sequences. Both sets of signals are applied to a switching store 10 controlling the presentation means, the arrangement being such that signals a, when present, override signals b and c. The signals a are derived from a store such as a coded track 2 on a magnetic tape 1 and the signals b or c are produced, e.g. as switching pulses, upon actuation of the keys A-D, the signals being applied over logic circuitry to the switching store 10. In operation, a teaching sequence is presented to a student, and the track 2 is scanned to produce signals a which are applied to a store register 6. At the end of a sequence, a posed question is answered by the student by actuation of a key A-D, each of which has a "jump" function allocated to it, whereby a control signal a is fed to the switching store 10 so that the information carrying medium is moved on appropriate number of steps as determined by the "jump" function of the actuated key. Once the lesson is finished, the signals a are no longer produced, and actuation of the answer keys then allows the student to move the medium a predetermined number of steps; for example, key A may be actuated to "repeat last element", key B to "return one lesson", key C to "advance one lesson" and key D to "begin lesson". The signals b enable the keys A-D to perform their particular functions, whilst the signals c can be utilized to allow the keys to be used for a different fixed switching sequence. Thus, during his instruction the student can derive the full benefit from the branching procedure, but can also intervene directly in the program sequence.
Patent GB-421571-A (GB)
Title: Improvements in or relating to stapling devices
IPC: B25C5/10
Filed: 1933-05-26
Abstract: 421,571. Stapling. JACKSON, L. MELLERSH-, 28, Southampton Buildings, Chancery Lane, London.-(Ace Fastener Corporation ; 3419, North Ashland Avenue, Chicago, U.S.A.) May 26, 1933, No. 15317. [Class 89 (iii)] A stapling device of the desk type comprises a base plate 20 carrying a variable clenching anvil 24 and ears 40 to which is pivoted a staple magazine comprising inner and outer channel members 70, 72. A driver-plunger housing 90 comprises horizontal portions 91 which embrace and are fixed to the magazine, and vertical side plates 93 with inturned front flanges 94, Fig. 3. The plunger is built up from a bar 101, which carries the knob 102, and a bar 105 having flanges 104 spaced from the bar 101. The flanges 94 enter the spaces so formed, and thereby guide the composite plunger in its vertical movements, which are limited by top and bottom stops. The driver 110 is secured to the rear face of the plunger. A front portion of the housing 90 enters between the plate 101 and driver 110 to assist in guiding the plunger. The rear of the housing is closed by a cover plate 112 which is secured by ears 114 and by interlocking projections 98 and 122 on the cover plate and housing. The spring 125 which elevates the plunger is guided by interdigitating posts 124, 126 carried respectively by the cover plate 112 and knob 102. The staple-pusher spring 118 is anchored to, and guided by three slots in, the cover plate 112, Fig. 4. In order to lock the driver plunger if it makes an incomplete stroke in either direction, the bar 105 carries a rack 174, Fig. 2, which co-operates with a weighted pawl 175. In case of an incomplete stroke, the pawl jams in the rack teeth and locks the plunger.
Patent GB-934053-A (GB)
Title: Stabilized polymeric materials
IPC: C08K5/17
Filed: 1960-05-02
Abstract: A polymeric composition comprises a polymer containing at least 50% by weight of polymerically combined methyl methacrylate containing intimately dispersed therein from 0,75 to 2% by weight, based on the weight of the polymer, of a methyl-t-amino alcohol having the general formula <FORM:0934053/IV(a)/1> wherein R may be 2,3-dihydroxypropyl or hydroxyalkyl having from 2 to 5 carbon atoms, and R1 may be methyl or R, as a stabilizer against the effects of outdoor exposure.  The polymer may be a copolymer of methyl methacrylate with styrene, alpha-methyl styrene, vinyl toluene, vinyl acetate or propionate, vinyl chloride, vinylidene chloride, acrylonitrile, or an acrylate, ethacrylate or chloracrylate, or a terpolymer of methyl methacrylate, styrene and alpha-methyl styrene.  The stabilizer may be 3-dimethylamino-1,2-propanediol, dimethylaminoethanol, methyldiethanolamine or 1-dimethylamino-2-propanol.  Specification 934,054 is referred to.
Patent GB-396201-A (GB)
Title: Improvements in or relating to coal cutting machines
IPC: E21C29/22
Filed: 1932-06-01
Abstract: 396,201. Coal-cutting machines. MAVOR & COULSON, Ltd. and MAVOR, J. B., 47, Broad Street, Mile End, Glasgow. June 1, 1932, No. 15537. [Class 68 (i).] A coal-cutting machine is mounted on endless tracks, the steering of which is effected by means of a single set of differential gearing through which power is transmitted to the track driving-wheels. As shown, the machine 1 is tiltable about the rear axles 17 of a tractor 3. Bevel gears 7 mesh with a common driving bevel gear 5 on a shaft depending from the machine and through clutches 13, 36, gears 14, 15 and a differential 16 drive the tractor reversibly. The clutch 36 may alternatively drive bevel gears 34, pinions 33, bevel gears 35 and worm gearings 30 to operate screw jacks 29 for tilting the machine. By opposite movements of a lever 23, one or other of two brake bands 21 may be applied to drums 19 on the rear tractor axles 17 for steering ; the brakes may have independent controls. The cutter head may be adjustable for horizontal or vertical cutting and the jib 2 may be slewed by gearing driven by the motor of the machine.
Patent GB-1178394-A (GB)
Title: Torque Measuring Devices.
Inventor: SKINNER ROBERT THOMAS JOHN
IPC: G01L3/14
Filed: 1966-04-07
Abstract: 1,178,394. Dynamometers. JOSEPH LUCAS (INDUSTRIES) Ltd. April 27, 1967 [April 7, 1966], No.15542/66. Heading G1W. A device for measuring torque transmitted between two shafts comprises a pair of members 10, 11 connectable to the shafts, relative angular movement between the members 10, 11 being permitted, the members 10, 11 being provided with portions 13, 19 having co-operating faces which move relative to each other due to the transmitted torque, such movement being opposed by fluid having a pressure indicative of the torque. The portions 13 which are provided with through-bores 17 are secured at diametrically opposite locations on the outer periphery of the member 10 which is generally cylindrical and provided with slots 27 and ports 40 forming part of a passageway system for the fluid. The portions 19 secured to the inner surface of the member 11 which is arranged to surround the member 10 are provided with bores 24, 25 which can communicate with the slots 27 or ports 40. When torque is applied between the shafts connected to the members 10, 11 relative movement of the portions 13 and 19 occurs so as to form a pair of enclosures between juxta-positioned faces of the portions 13, 19. Such enclosures are supplied with fluid under pressure via passageways 32, 31, 33, slots 27 and bores 24 or 25 from a system 34 connected via a restrictor 35 to a pressure gauge 36 until the fluid is at such a pressure as to escape to atmosphere from the enclosures via bores 17, 25 or 24 and ports 40, such pressure being indicated on the gauge 36 and being indicative of the transmitted torque.
Patent GB-1111992-A (GB)
Title: Improvements in or relating to electric resistance heater units
IPC: H05B3/26
Filed: 1965-04-13
Abstract: 1,111,992. Electric heating resistances. S. G. WRIGHT. 12 July, 1966 [13 April, 1965], No. 15596/65. Heading H5H. An electric resistance heater unit is made by bonding a cupro-nickel element on to a first slab of glass-fibre reinforced resinous material by a " printed circuit " technique, covering the element with a second slab of glass-fibre reinforced resinous material and bonding the two slabs together by the application of heat so that the element is tightly sandwiched between them. The heat may be generated by passing current through the element or may be applied to the sandwich externally.
Patent GB-155610-A (GB)
Title: A new or improved process for the sterilization and purification of water
IPC: C02F1/28
Filed: 1919-06-20
Abstract: 155,610. Sauer, J. N. A. June 20, 1919. Precipitants; dcodorants.-Finely divided highclass decolorizing carbon is used as a filtering medium for or is mixed with sewage for the purification thereof. The carbon is first boiled with weak acid or alkali or heated to a high temperature in closed retorts, or two or more of these operations may be employed.
Patent GB-515156-A (GB)
Title: Improvements relating to the treatment of zinc dust for reducing the speed of reaction thereof in processes using it as a catalyst or reactant, and to processes using zinc dust in this capacity
IPC: B01J37/34
Filed: 1938-05-25
Abstract: 515,156. Electrolytic production of zinc dust containing lead. SIEMENS & HALSKE AKT.-GES. May 25, 1938, No. 15642. Convention date, May 27, 1937. [Class 41] [Also in Groups III and IV] A zinc dust containing lead is obtained by electrolysis of a strongly alkaline zincate solution using an anode of lead or an alloy of lead, e.g., with tin, cadmium, or silver. The product is intended for use as a catalyst or reagent.
Patent GB-573347-A (GB)
Title: Improvements relating to gases and vapours
IPC: C10K1/32
Filed: 1943-09-23
Abstract: 573,347. Filtering gases. CHEMICAL ENGINEERING & WILTON'S PATENT FURNACE CO., Ltd., MANN, H. C., KERNON, D. R., PRIEST, E. H., and EASTLAKE, A. W. Sept. 23, 1943, No. 15655. [Class 1 (i)] A system of purifying gases comprising filter, condenser, receiver and heater sections is characterised in that all the sections are of the same cross-sectional shape and size so that when assembled they form a closed structure of rectangular, cylindrical or other simple shape. The apparatus is of quite general application but a preferred application concerns the purification of coal gas by removing benzol therefrom. In a preferred embodiment the sections are of rectangular shape and are fitted with flanges so that they may readily be bolted together and if desired one or more sections added. In the apparatus particularly described the purpose is to remove benzol from coal gas, and the apparatus is fitted with external valves and pumps which may be automatically operated to enable the apparatus to be kept in continuous use by cleaning and drying one set of filters while the others are in use. In the figure the filters work in pairs 11 and 12 and 13 and 14. When one pair is in use the other pair are being regenerated. Coal gas containing benzol passes in the line 58 and then depending on the position of the valves 51 and 54 through either of the pairs of filters 11 and 12 or 13 and 14. If the valves are in such a position that filters 13 and 14 are being used, the gas passes into reservoirs 20 and 22, then through the filters 13 and 14, and then the benzol free gas passes via lines 47 and 69 to valve 70, cooler 72 and out through the main 74. While this is happening filters 11 and 12 are being regenarated by steam passing in pipe 63 to compartment 26, out through jets 27 to receiver 18 through the filters 11 and 12 in the opposite direction to which the benzol laden gas had passed and into receivers 17 and 19. The steambenzol vapour is condensed in condenser 15 and the liquids run into seperator 65, the benzol being drawn off from line 66 and the water from line 67. After the benzol is removed from the filters the latter are then dried by the passage of hot benzol free gas obtained from the main 74 by means of the pump 76 and the heater 16. The hot gas is passed round the same way as the steam went round. The filters are equipped with cooling coils 25 through which water may be circulated. The preferred filling for the filters is activated carbon but other fillings such as silica gel may be used.
Patent GB-312806-A (GB)
Title: Improvements in and connected with door checking devices
IPC: E05F3/10
Filed: 1928-05-29
Abstract: 312,806. Adams, J. S. May 29, 1928. Checks.-The usual cylinder 1 of a door check is enclosed by a chamber 2 which is sealed from the exterior with the exception of a filling aperture that is normally closed, the outer chamber 2 being provided to accommodate some of the liquid cushioning means and communicating freely at 6 with one end of the interior of the cylinder 1. The piston is provided with a one-way ball valve 16, and also with a pin valve 7 that is of changing diameter at 13 to provide an orifice 9. The member 7 is adjustable by rotating it through a capstan member 12.
Patent GB-1178153-A (GB)
Title: Improvements in and relating to Mechanised Storage Systems and Apparatus therefor
Inventor: BRIGHT THOMAS JOHN ROBERT
IPC: B65G1/04
Filed: 1967-04-05
Abstract: 1,178,153. Mechanical storage system. T. J. R. BRIGHT. 22 March, 1968 [5 April, 1967], No. 15723/67. Heading B8E. A storage and retrieval system for pallets supporting vehicles or other loads comprises rectangular storage units of N locations and N-3 movable load supporting members, each served by at least one transporting route. The 8 location unit, Figs. 1, 3 has pallets 1-5 and shuttle carriers a, b, one of which is always occupied by a pallet and which both move together in the direction X-X, Y-Y, Fig. 3, while the pallets can be moved as a row. The units are served by expressways such as a1, b1 provided with express carriers h. The pallets, Fig. 8, which are of skeleton form with members 15, 16 and channels or tracks 10, 11 for vehicle wheels have wheels 12 which run on tracks 13, 14 on the carriers, Fig. 9, and rails j of the storage unit. The carriers, Fig. 9, of members 17, 18 and raised portions 19a, 19b with tracks 19<SP>1</SP>, 19<SP>11</SP> to be located between the track portions 10, 11, have wheels 20, 20a and in the case of the shuttle carriers a, b always run within the unit while the expressway carriers h always run therein. The carriers have pinions 22 driven by electric motors 21 deriving power from live rails 36-39, Fig. 11, which engage racks 24, 25 respectively, while the pallets are moved longitudinally of the unit by electric motors 29, 30 driving pinions 27, 28 which engage racks 31 on the pallets. The pallets can be coupled together by means 32, 33 which are selfdisengaging when a pallet is picked up by an expressway carrier. In use, the pallets are circulated within a unit by alternate transverse movement by the carriers a, b and longitudinal movement in the unit to present each pallet in turn for engagement with an expressway carrier h for movement to or from reception points a3, a4 and exit points a5, a6. Hauling bogies may be used in the expressways.
Patent GB-1167616-A (GB)
Title: Hot-Melt Compositions
Inventor: FULLER JAMES STEWART
IPC: C09J123/08
Filed: 1967-04-05
Abstract: 1,167,616. Wax adhesives. BORDEN CHEMICAL CO. (U.K.) Ltd. 15 March, 1968 [5 April, 1967], No. 15731/67. Heading C5W. [Also in Division C3] Compositions suitable as hot melt adhesives comprise (1) a petroleum wax, (2) an ethylene/ vinyl acetate copolymer with 17-34 weight per cent vinyl acetate, (3) rosin or a rosin derivative and as antioxidant (4) a minor proportion by weight of a mixture of dilauryl thiodipropionate and 2,2<SP>1</SP>-methylene bis[6-(1-methylcyclohexyl) - 4 - methylphenol]. Examples describe compositions of paraffin or microcrystalline wax, ethylene/vinyl acetate copolymers, hydrogenated wood rosin or the the glyceryl ester thereof, antioxidants and chalk. Other fillers mentioned are gypsum and talc.
Patent GB-398964-A (GB)
Title: Improvements relating to thermostatic devices for use with gas burners
IPC: G05D23/02
Filed: 1932-06-04
Abstract: 398,964. Thermally-actuated valves. RADIATION, Ltd., Thimble Mill Lane, Aston, Birmingham, and POOL E, R., Grappenhall Works, Thelwall Lane, Grappenhall, Warrington, Lancashire. June 4, 1932, No. 15764. [Class 135.] A thermally-actuated valve device for use with gas burners comprises the arrangement of a member i which is detachable from the body of the device containing the valve seating g, with a valve slidably but non-rotatably connected to the member i, an adjustable abutment-piece n screw-connected with the valve, a rotatable adjusting-piece q carried by the member i, and a spring r acting on the valve, in such manner that the several parts can be removed from the body of the device as a single unit. The valve is actuated by the relative expansion between a rod f and a tube e due to heat. The members q, n are connected by a tongue-and-groove coupling with the tongue o on the member n or on the member q. A part of the adjusting-piece q passes through the member i and is notched for engagement by a key. Inwardly directed projections l on the member i engage flats m on the valve member so as to permit limited axial movement but not rotation. Alternatively, the projections may be on the valve member, or guide stems on the member i may engage notches in the periphery of the valve. The end of the adjusting-piece q may be enclosed by a cap u, or may carry a graduated disc co-operating with an index on the member i.
Patent GB-128092-A (GB)
Title: Improvements in or relating to Steam Superheaters.
IPC: F22G7/02
Filed: 1918-09-28
Abstract: 128,092. Babcock & Wilcox, Kemnal, J., and Henry, J. Sept. 28, 1918. Fire and smoke tube superheaters.-The flow and return tubes 1 of elements inserted in boiler smoke-tubes 4 are D-shaped in cross-section, the plane faces of tubes being placed together, and the elements are welded to subheaders, as described in Specification 128,091.
Patent GB-451528-A (GB)
Title: Reeling device for wire or the like
IPC: B65H54/28
Filed: 1935-05-31
Abstract: 451,528. Drawing wire. JACKSON, M. B., 103, Heath Street, Toronto, Canada. May 31, 1935, No. 15868. Convention date, June 6, 1934. [Class 83 (iv)] [See also Group IX] Wire is drawn in a machine comprising dies 3 and drums 2, the wire engaging only part of the circumference of each drum, and lying always in a plane perpendicular to the axes of the rolls, and the drawn wire 4 passes to a reeling-spool 6 on which it is guided by a slotted traverse 5a reciprocating axially of the spool. The movement of the traverse is reversed when an adjustable member 15 strikes the ends of the spool, thereby rocking a switch 13b to energize or de-energize a solenoid 13 to bring oppositely driven wheels 8, 9 alternately into engagement with a wheel 7. The spool is driven by a belt 17 caused to engage the wire thereon by a counterweight 20e.