baber/WOPTO huggingface dataset:
Patent GB-501477-A (GB)
Title: Process for burning of magnesia
IPC: C01F5/06
Filed: 1938-02-21
Abstract: 501,477. Magnesia refractories. KUMMERLING, A. Feb. 21, 1938, No. 5376. Convention date, Feb. 19, 1937. [Class 22] [Also in Group III] Burnt magnesia for refractory purposes is obtained by conducting through an electric arc bands, rods, or strings made by moulding powdered magnesia or magnesite or compounds containing them. The initial material, with or without bauxite, scoria, chromium oxide,'or quartz, may be mixed with binding agents such as crystalline magnesium chloride or solutions thereof, dry or dissolved water-glass, wet ground fused magnesia, or sorel cement, and be moulded by hand or in a string press. The plastic mass obtained, with or without previous drying, may be passed through refractory tubes, which may be heated, to the electric arc, through which it passes slowly. The burnt product should have a density of between 3À5 and 3À62.
Patent GB-550911-A (GB)
Title: Improvements in or relating to burners for use with pulverised fuel
IPC: F23L17/00
Filed: 1942-04-22
Abstract: 550,911. Pulverized fuel burners. FOUNDRY EQUIPMENT, Ltd., and BEECH, A. S. April 22, 1942, No. 5420. [Class 75 (i)] A pulverized fuel burner suitable for use in rotary melting furnaces consists of a tubular body 20 adjustably secured to the fuel supply pipe 26 and carrying three or more dished plates 28, 30, 32 spaced apart by small cylindrical members 40 which define the arcuate lengths of the discharge slots 42. The plate 30 has a .central aperture of a diameter substantially equal to the internal diameter of the tube 20. The end plates 28, 32 define a chamber having an axial depth substantially less than the diameter of the tube 20. A body 44 of refractory material is secured to the outer plate 32 to protect the burner from the furnace heat. The tube 26 may extend through the door 48 of the furnace wind box 14.
Patent GB-850255-A (GB)
Title: Improvements in fluid flow valves
IPC: F02C7/232
Filed: 1959-02-17
Abstract: 850,255. Gas turbine plant. GENERAL MOTORS CORPORATION. Feb. 17, 1959 [May 29, 1958], No. 5421/59. Class 110 (3). [Also in Group XXIX] A valve has two chambers 19, 20 separated by a valve seat plate 14 containing a port 32 controlled by a wiper plate 35 slidably mounted in one chamber on a movable stem 37 and pressed on the seat by a spring 52. The valve 10 is used in a gas turbine fuel control system, Fig. 1, in which the valve stem 41 is actuated by a servomotor 84 controlled by an evacuated bellows 81 opposing a bellows 79 responsive to compressor inlet temperature at 77. Compressor outlet pressure at 76 passes through the controlled port 32 to an atmospheric bleed 27 and to a pipe 26 leading to, e.g., a bellows in a fuel control device 72 having a manual control 73 and controlling fuel flow at 74 to the burners.
Patent GB-840071-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B19/12
Filed: 1958-02-20
Abstract: 840,071. Photographic cameras. KODAK Ltd. Feb. 20, 1958 [Feb. 20, 1957], No. 5517/58. Class 98(1) A single-lens reflex camera comprises a betweenlens shutter which on release closes the shutter blades and then opens and closes them to effect an exposure, means for rotating a cocking shaft to cock the shutter and a detent to hold the rotating means after cocking, means controlled by the rotating means driving the cocking mirror to move a rotatable mirror and a rotatable lightblocking flap into image-viewing position and latches to hold them in such position, and a shutter trip means which releases the shutter but not the detent and also unlatches the mirror to allow it to pivot under spring action and release the detent to allow the shutter to operate, further movement of the mirror unlatching the flap to allow it to be moved by a spring to an inoperative position while the shutter blades are closed. Film winding and shutter and mirror setting: Release winding lever 11, Fig. 5, rotates a shaft 14 to rotate a film spool coaxial therewith and also rotates a shaft 24 by way of a rack and pinion gearing. A pin 27 engages a member 26 on a shaft 25 to rotate the shutter cocking shaft 66 by gearing 61-63, the shutter being held in set position by mechanism not shown and the shaft 25 held by a detent 67 engaging a member 71 thereon. Shaft 24 also carries a cam 29 and pin 31 respectively engageable with bars 32, 33 moved vertically thereby to rotate the mirror 12 and flap 13 into image viewing position, the mirror being held in such position by a latch 52 on the flap by a slide bar 45, these members being moved to allow the mirror and flap to reach their operative positions by a slide bar 49 operated by a cam 57 and by the slide 32 respectively. The flap is also held in position by a spring-urged slide bar. On completion of the film winding the bars 32, 33 and 54 return to their neutral positions whilst mirror and flap are held by their latches and the shutter is set fully open. Release operation: Pressure on the release button 51 moves a slide 49 downwards, causing a lever 76 to operate the shutter release shaft 75, the shutter being held however by engagement of detent 67 with member 72 on the shaft 25. The slide 49 in its downward movement releases, by a pin 80, the latch 52 holding the mirror 12 and by a projection 47 the slide 45 holding the flap 13, the latter being still retained by the slide 41. The mirror then swings upward under spring action until a lug 74 engages an end 73 of the detent 67 to release the shaft 25, thereby releasing the shutter to close the blades. During such closing the mirror continues to pivot until it engages and lifts the slide 41 thereupon the flap 13 pivots upwards under spring pressure to inoperative position to allow an exposure. Provision is made for holding the shutter blades open for "bulb" exposures by maintaining pressure on the release button 51. Specification 769,086 is referred to.
Patent GB-691282-A (GB)
Title: Improvements in the production of salicylic acid derivatives
Filed: 1951-03-08
Abstract: Para-aminosalicylic acids which may be substituted by an alkyl group in the meta-position to the carboxylic group are obtained from the crude phenolate solutions, obtained from the alkali melts of the corresponding sulphonic acids by dilution with water, by reaction with carbon dioxide under increased pressure, e.g. 3-200 atmospheres and at elevated temperatures, e.g. at 80-200 DEG  C., continuously or by a batch process.  In examples, a m-aminophenolate solution obtained by fusing metanilic acid with potash and diluting, and a solution of 1-amino-3-hydroxy-6-methylbenzene, by fusion of the corresponding sulphonic acid with potash and dilution, are treated with carbon dioxide under pressure, by batch or continuously, to give the p-amino-salicylic acid and 2-hydroxy-4-amino-5-methyl-benzoic acid respectively.
Patent GB-336536-A (GB)
Title: Improvements in or relating to change-speed gear mechanism
IPC: F16H3/16
Filed: 1930-02-20
Abstract: 336,536. Roesch, G., and Talbot, Ltd., C. Feb. 20, 1930. Variable-speed gearing.-Two clutch members 20, 25 and a central pinion 11, 12 are all splined directly on to a shaft 3, which as shown in the driven shaft of the gear, and are movable axially along the shaft. A pair of rods 31, 32 lying in grooves in the shaft 3 have heads 34, 35, engaging the clutch. members, causing the latter to move in unison. The clutch 20 engages a pinion 4 on the driving-shaft 2 for a direct drive, and the clutch 25 connects a pinion 8, driven by the lay shaft, to the driven shaft. The double pinion 11, 12 engages with teeth 13, 14 on the lay shaft for lower speed ratios. Specification 327,046 is referred to.
Patent GB-212565-A (GB)
Title: Improvements in or relating to vulcanizing apparatus for re-moulding the covers of pneumatic tyres
IPC: B29D30/54
Filed: 1924-03-05
Abstract: 212,565. BarrÚ, P. March 6, 1923, [Convention date]. Vulcanizing-moulds; formers. - Apparatus for re-treading tyres comprises mould parts 1, 2 within which is fitted a detachable ring 14 carrying the desired tread pattern, a former 15 upon which the tyre is mounted, and a tube 19 containing liquid or other pressure medium. The former 15 is made in sections secured together by hooks and studs. The arrangement is such that the beads of the tyre are not in contact with the heated mould parts. Two or more moulds of different sizes may be mounted on a common pedestal, the parts 1 being fixed and the parts 2 hinged to them.
Patent GB-1059405-A (GB)
Title: 5,7-substituted-5-norbornene-2,3-dicarboximides and related compounds
IPC: C07D209/76
Filed: 1964-02-11
Abstract: The invention comprises 5-(a -hydroxy-a -R1-a  - R2 - methyl) - 7 - (R3,R4 - methylene) - N - R5-5 - norbornene - 2,3 - dicarboximides and the corresponding 2,3-dicarboxylic anhydrides, where R1,R2,R3 and R4 are, interchangeably phenyl; phenyl substituted by hydroxy, esterified hydroxy, etherified hydroxy, nitro, primary, secondary or tertiary amino, or halo; or heterocyclic radicals having 4-9 carbon atoms interrupted by one or more O, N or S atoms; and R5 is H1 or C1- 7 alkyl, alkenyl or hydroxyalkyl. They may be prepared by: condensing appropriate a  - R1 - a  - (6 - R3 - 6 - R4) - 2 - fulvenyl-R2 methanols with a substituted or unsubstituted maleimide or maleic anhydride; introducing R5 by standard alkylation-type processes; converting the anhydride with ammonia or an amine to give an acid amide which is cyclized to the imide; or condensation of the above fulvenyl methanols with maleamic acid or its esters to give an acid amide cyclizable to the imide.ALSO:Rodenticide compositions comprise a 5-(a -hydroxy-a -R1-a -R2-methyl) - 7 - (R3 - methy - lene)-N-R5- -5-norbornene-2,3-dicarboximide where R1, R2, R3 and R4 are, interchangeably, phenyl; phenyl substituted by hydroxy, esterified hydroxy, etherified hydroxy, nitro, primary, secondary or tertiary amino, or halo; or heterocyclic radicals having 4-9 carbon atoms interrupted by one or more O, N or S atoms; and R5 is H or C1-7 alkyl, alkenyl or hydroxyalkyl, together with an inert carrier.
Patent GB-323172-A (GB)
Title: Improvements in gun sights
IPC: F41G5/14
Filed: 1919-03-07
Abstract: 323,172. Henderson, J. B. March 7, 1919. Ordnance sights.-Relates to gun or director sights fitted with the cross-levelling corrector described in Specification 323,171 and consists in applying a correction for drift by adapting the roller or slide-block of the cross-levelling corrector to be displaceable vertically, whereby an azimuthal deflection is produced owing to the slide being inclined to the vertical at the angle of elevation of the gun. In the form shown as applied to a director sight, the block is in two parts 11, 16 adjustable vertically one with respect to the other, to vary the drift correction, by turning a milled head 17. The block 16 is guided in a vertical slotted sector 10 rigid with the leg 1 of the tripod mount, and the block 11 is guided in a slotted sector 7 mounted on a horizontal spindle 8 in the sight bracket 6, this spindle being rotatable by gearing (not shown) from the intermediate member of the director sight, so that the sector 7 assumes the angle of elevation of the gun, as described in Specification 323,171. The spindle 12 of the block 11 is supported by a cranked bracket 18 carried by a vertical spindle 19 attached to a horizontal shaft 20 connected by a crank 23 to the levelling telescope. In operation, adjustment of the blocks for drift by the head 17 is made according to the type of projectile used, and the blocks are raised and lowered to maintain the cross-levelling telescope on the horizon by operating a hand-wheel 24 fast. with a pinion 24a gearing with a rack 25 which is slidable in a cylinder 26 pivoted to the base. In a modification, the slide 10, and block 16 are omitted, and the adjustment for drift is imparted to the block 11 by raising or lowering the cylinder 26 or by adjusting the springs therein which serve to centre the rack 25.
Patent GB-290389-A (GB)
Title: Improvements in or relating to carts and lorries for collecting and discharging dust, refuse, and other materials in bulk
IPC: B65F3/18
Filed: 1927-03-01
Abstract: 290,389. Simpson, H. R. March 1, 1927. Scavengers' carts adaptable also for the conveyance of other material such as road metal comprise a series of receptacles b which normally are not removable and which are provided with lids b<1> adapted to be opened at the charging and discharging positions, the receptacles being adapted to be traversed to the storing position within the cart when filled and thence to the discharging position when required. The receptacles b are traversed by travelling chains d driven bv a drum g and are guided by means of their trunnions c on guide rails e. As shown in Fig. 1 the receptacle in the filling position is held by plates n and the lid opened by a lever l, l<1> operated by a foot treadle m. All the receptacles as filled are traversed into the storing position and when it is desired to discharge them they are successively brought to the discharge position and tipped. As shown, a cam lever k is rotated causing the receptacle to tip the lid being opened and held open by means of the guides j, j<1>. Each receptacle as traversed by the chain d comes in contact with the lever k and is tipped, the lid automatically closing as the receptacle again reaches charging position. The receptacles may be traversed in a horizontal plane and the body may be mounted on a turntable.
Patent GB-284098-A (GB)
Title: Improvements in or relating to the treatment of manganese ores
IPC: C22B47/00
Filed: 1927-03-01
Abstract: 284,098. Dicker, S. G. S., (Wiarda & Co., J. C.). March 1, 1927. Drawings to Specification. Ammonium sulphate and chloride.-The manganese content of a manganese-bearing ore is reduced to manganese oxide by roasting the finely-divided ore in the presence of a gaseous or solid reducing agent, and the ore is then leached with ammonium sulphate solution at a temperature of about 80‹ C., the ammonia liberated during this operation being recovered in either gaseous or aqueous form. The manganese sulphate solution produced is filtered and cooled, and may then be treated with the recovered ammonia, resulting in the regeneration of ammonium sulphate solution, which is then used for subsequent leaching operations, and the precipitation of manganese hydroxide, which is separated, dried and heated at a temperature of about 825‹ C. in a reducing atmosphere, producing pure manganese oxide. Ammonium chloride may be used as the leaching solution in place of the sulphate. Partially leached ore may be treated with fresh leaching solution, the same solution being subsequently used for fresh unleached ore.
Patent GB-1223578-A (GB)
Title: Machine for folding box blanks
IPC: B65B19/24
Filed: 1969-02-03
Abstract: 1,223,578. Making boxes. ARENCO A.B. 3 Feb., 1969 [16 Feb., 1968], No. 5746/69. Heading B5D. A machine for folding box blanks 9 comprises a plurality of mandrels 11 each having a rectangular cross-section and suction means for holding blanks thereagainst. The mandrels 11 are carried and moved by a drive member 10 in a closed path of movement past blank feeding means and a plurality of blank folding stations. A blank is fed parallel to and on to the forward face of a mandrel which abuts the blank within a central area thereof and the suction means comprises holes in the forward face (Fig. 2, not shown). Suction holes may be provided in the rear faces of the mandrels. The box blanks are cut from a web 2, the length thereof being determined by the forward end of the web engaging a stop 8 on the drive member 10. The first folding station comprises a pair of folding rollers 27, 28 which fold the box blank about a mandrel such that two portions 31, 32 of the blank trail to the rear of the mandrel. These two portions 31, 32 are each folded about the mandrel by a flanged roller 29, 33, respectively (Fig. 7, not shown), and the overlapping edges thereof are secured as with adhesive.
Patent GB-285878-A (GB)
Title: Improvements in or relating to record-cards for use in statistical machines
IPC: G06K19/04
Filed: 1928-02-23
Abstract: 285,878. British Tabulating Machine Co., Ltd., (Assignees of Lake, C. D.). Feb. 24, 1927, [Convention date]. Statistical apparatus. - A recordcard blank for use in a statistical machine is provided with a tear-off stub or counterfoil to serve as a receipt, voucher or tally and the line of separation of this part with the record-card proper is formed by one or more slits with unsevered portions at the ends of the slit or slits which are weakened in a region wholly within the card proper so that when the stub part is separated the edge of the card will not be uneven apart from the small notches therein which will not interfere with the passage of the card through the machine. As shown in Fig. 2, the stub and card proper are separated by cleancut slits 3 the ends 4 of which are indented into the body of the card so that when separated the ragged edge of the indentation, formed at 5, will be out of alignment with the edge 3. One slit only may be formed in the card. the unsevered portions lying then between the ends of the slit and the edges of the card.
Patent GB-555000-A (GB)
Title: Improvements in or relating to the catalytic dehydrogenation of isopropylbenzene
IPC: C07C5/333
Filed: 1941-05-02
Abstract: 555,000. Catalytic dehydragenation. DISTILLERS CO., Ltd., STANLEY, H. M., and SALT, F. E. May 2, 1941, No. 5767. [Class 1 (i)] [Also in Group IV] Isopropylbenzene is catalytically dehydrogenated to α-methylstyrene by passage in admixture with water vapour over an oxide of vanadium at a temperature of 500-700‹C. The presence of the water vapour, which is preferably employed in at least equimolecular proportion, retards the fouling of the catalyst. Examples are given. Specification 514,587 is referred to.
Patent GB-269491-A (GB)
Title: A process of producing complex fluorides
IPC: C01B33/10
Filed: 1927-03-02
Abstract: 269,491. Meyerhofer, A. F., (Assignee of Buchner, M.). April 13, 1926, [Convention date.]. Gases, treating with liquids.-In producing reactions between liquids, which may contain suspended solids, and gases, the gas is injected through tangential openings e or a central opening f, into the base of a column of liquid contained in a funnel-shaped vessel a. The liquid passes over into an outer vessel b from which it returns through openings d to the vessel a. The product of reaction mav be removed from the base g of the vessel a or the base of the vessel b. The gas may be heated or a heating-jacket may surround the lower part of the vessel a or heating coils may be suspended in or surround the vessel a. Agitating-means or stationary baffles may be provided in the vessel a.
Patent GB-227665-A (GB)
Title: Improvements in or relating to tobacco pipes
IPC: A24F7/02
Filed: 1924-03-08
Abstract: 227,665. Lewis & Hardcastle, Ltd., and Hardcastle, E. C. March 8, 1924. Tobacco pipes.-In tobacco pipes in which an enlargement e of the bore of the mouthpiece conta.ins a tubular fitting a flanged at d and having a chamber h, this chamber lies wholly within the mouthpiece-spigot b and is adapted to receive. quills.
Patent GB-1255255-A (GB)
Title: A fluidic switching device
Inventor: BAHRTON PER SVANTE
IPC: F15C1/08
Filed: 1969-02-04
Abstract: 1,255,255. Fluidic Switching devices. P. S. BAHRTON. 4 Feb., 1969 [6 Feb., 1968], No. 5987/69. Heading G4P. A fluidic switching device comprises block 11 with inlet 12 and two angled outlets 13, 14 clamped between opposed cover-plates; control or vortex chambers 15, 16 being interposed between the inlet and the outlets; and edges 17, 18 defining the transitions between the chamber and the outlets. Conduits 19, 20 containing valves 21, 22 are connected to the chambers, and a restriction 23, 24 is present at the transition of the inlet and the chambers. If valves 21, 22 are symmetrically operated, the fluid flow is divided between the outlets or passes through either at random. Closure of, e.g. valve 21 and opening valve 22 to atmosphere establishes by pressure differential a clockwise vortex in chamber 15, which co-operates with edge 17 to direct fluid to outlet 13. Reversal of the valves establishes a vortex in chamber 16 to direct fluid to outlet 14, so that the device is bi-stable. Alternatively the changeover conditions may be established by differential positive pressures between conduits 19, 20. Dimensioning of the restriction 23, 24 and the regions of the chambers adjacent edges 17, 18 are critical to produce abrupt changes of flow pattern; the transverse length of the restriction being 10 to 40% of the distance between the inner wall and centre axis of the inlet.
Patent GB-600804-A (GB)
Title: Improvements in or relating to visual signal indicating systems
IPC: G01S1/02
Filed: 1944-03-31
Abstract: 600,804. Cathode-ray oscillographs. WOOD, K. A. March 31, 1944, No. 6070. [Class 37] [Also in Group XL(c)] A cathode ray tube indicator for the comparison of signals of varying amplitude is arranged for the display of the signals as wide and narrow superimposed deflections of a time base trace the signals being differentiated by the widths of the deflections along the trace. In the airborne equipment of Fig. 6 intended for co-operating with a responding beacon transmitter of the type described in Specification 600,805, [Group XL(c)], radiating successively dot and dash pulses identified with opposite sides of an equisignal landing path, a transmitter T radiates interrogating pulses from aerial A1 and synchronises a generator TBC providing a linear trace on a cathode ray tube CRT. A receiver R which is suppressed during the interrogating pulses, receives the beacon signals alternately on the differently directed aerials A2, A3 through the motor driven switch S1 which operates at about twice the beacon modulation frequency. The receiver output is applied alternately to the right and left X plates of the C.R. tube through a switch S2 operating in synchronism with switch S1 to produce a double sided pulse deflection 6 on the time base trace, the dot and dash pulses 3 and 4 being superimposed on the time base 5, Fig. 1. Inequality of the dot and dash pulse amplitudes observed with the help of scale 2, indicates that the craft does not lie on the equi-signal path while inequality of the pulse deflections on the two sides of the trace indicates that the craft is not correctly headed towards the beacon. If an indication of craft heading is not required, a single receiving aerial A4 may be employed with the switches S2 not operative, the pulses being then displayed on one side of the trace only. The position of the deflections along the trace indicates the range to the beacon and any delay in the beacon response may be compensated by delaying the start of the time base trace. Auxiliary strobe pulses may be employed to mark points of distance on the equi-signal path and a higher speed time base may be used at short distances from the beacon to enable the point of touch down to be determined more easily.
Patent GB-355692-A (GB)
Title: Improvements relating to electric potential indicating devices
IPC: G01R31/50
Filed: 1930-02-24
Abstract: 355,692. Current detectors; indicating faults. EDISON SWAN ELECTRIC CO., Ltd., 123, Queen Victoria Street, London, GREETHAM, E., 27, Louis Street, Hull, and SHOTTER, G. F., 14, The Ridgeway, Friern Barnet, London. Feb. 24, 1930, Nos. 6072 and 38738. [Class 37.] In apparatus for indicating whether high-tension A.C. conductors are alive, a neon tube 3 in series with one or more sparkgaps 9, 10 having needle-like electrodes of very small capacity, is mounted on a holder fitted with a contact-clip 11 and a metal cap 12 forming a capacitative coupling. Instead of the neon tube some other form of detector, such as a coil associated with a sounding diaphragm, may be used. Specification 206,216, [Class 37, Electricity, Measuring &c.], is referred to.