baber/WOPTO huggingface dataset:
Patent GB-910356-A (GB)
Title: Method of automatically controlling a sulphuric acid treatment plant for ferrous materials
IPC: C23G1/36
Filed: 1960-06-23
Abstract: <PICT:0910356/III/1> Ferrous articles are treated with sulphuric acid in a process which comprises passing the articles through a bath of aqueous sulphuric acid, withdrawing a portion of the bath and precipitating ferrous sulphate monohydrate therefrom, for example by heating and/or adding sulphuric acid, separating the precipitate, for example by sedimentation, filtering or centrifuging, and recycling the classified solution into said bath, withdrawing a further portion of the bath and dissolving at least a part of the separated monohydrate therein to increase the ferrous content of the withdrawn further portion, thereby generating heat, exposing this portion to crystallizing conditions to precipitate iron sulphate heptahydrate, which is separated to provide a regenerated solution, reheating the solution and returning it to the treating bath.  The figure illustrates an apparatus for carrying out the process, in which ferrous articles, e.g. steel strip, are passed in counter-current flow to the pickling solution through tanks 1, 2, 3, 4 in that order, tank 4 being continually supplied with fresh and/or regenerated pickling solution.  The temperature in tank 1 is maintained by pumps 9 which pass pickling solution through heat exchangers 10.  Tank 1 has the highest iron concentration.  From one of the heat exchangers 10 the solution passes via line 19 to another exchanger 20 and then via line 21 to settling tank 22, to which is added sulphuric acid via line 24 to precipitate ferrous sulphate monohydrate.  The supernatent solution is recycled via lines 25 and 26 to tank 1.  The monohydrate is passed via line 30 to dissolving tank 31, and spent solution from tank 1 is passed to tank 31 via line 12.  The solution now passes to reservoir 13 and then to 15 via line 14, where iron sulphate heptahydrate is precipitated for example by vacuum concentrating and cooling means.  The precipitate is removed, and the solution is stored in reservoir 17.  Make-up sulphuric acid may be added ahead of or at 17 and the regenerated solution is reheated and recycled via line 18 to tank 4.
Patent GB-387376-A (GB)
Title: Improvements in electrical musical instruments
IPC: G10H3/06
Filed: 1931-08-04
Abstract: 387,376. Electrical musical instruments. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and WINCH, G. T., c/o General Electric Co., Witton, Birmingham. Aug. 4, 1931, No. 22095. [Class 88 (ii).] An instrument with a light-sensitive cell, in which different timbres can be produced simultaneously, employs movable slits passing over stationary wave-form apertures. In Fig. 1, a conical drum 1 has circular rows of slits 2 .. 3 which rotate in front of longitudinal sets of apertures 5 .. 6 and corresponding longitudinal light sources 4, the light-sensitive cell being arranged within the drum. The wave-forms in a single set of apertures are uniform (or approximately so) corresponding to the timbre of a particular " stop." Associated with each aperture is a shutter, all the shutters in line with a single row of slits being operable electromagnetically from one playing key to give a note whose pitch is determined by the number of slits in the row, and whose timbre is determined by the particular lamp illuminated. Separate volume - control for each " stop " may be obtained by rheostats in the lamp-circuits. " Stops " may also be brought in simultaneously, successively or gradually. According to the Provisional Specification, the rotating drum may be cylindrical. In Fig. 2, the drum is replaced by a disc 7 mounted on a shaft 8a and provided with circular rows of slits. The sets 14, 15 of wave-form apertures, with the shutters 16 of different notes, are arranged radially. The beams from a single lamp 13, placed at the focus of a parabolic mirror 11, pass to the cell 12 at the focus of mirror 10. " Stop " switches control operation of the different sets of shutters. In Fig. 4, (not shown) the lamp 13, mirror 11, and shutters 16 are replaced by a number of small lamps, one lamp and lens being provided for each wave-form aperture in the various sets. " Stop " switches control the illumination of the different sets of lamps. The slits may consist of scratches in an opaque coating on the disc 7. The wave-form apertures may be obtained from a " master " by photographic printing.
Patent GB-252656-A (GB)
Title: An improved material for moulding articles of all kinds, more particularly for the manufacture of positive moulds
IPC: C08L93/00
Filed: 1925-09-04
Abstract: 252,656. Poller, A. May 30, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Adhesives consist of a foundation of hard resins, such as colophony hardened by the addition of zinc oxide, copal, dammar, mastic. shellac, sandarac, or amber, with the addition of balsams or soft resins, such as copaiba balsam, Canada balsam, Peruvian balsam, or gum elemi. The hard resin may be added as a solution in linseed oil or linseed oil varnish, or amber may be added as a very fine meal. The brittleuess of colophony is removed by the addition of starch, for example, wheat starch. The viscosity of the mixture is decreased by adding paraffin wax, beeswax, spermaceti, or the like, and the melting point is then raised by the addition of carna³ba wax. Fillers, such as whiting, marble meal, kaolin, talc, glass powder or gypsum, colouring matter, such as iron filings, silver or gold bronze powder or pigments, such as ochres, and fibrous materials, such as Harris wool may be added.
Patent GB-614754-A (GB)
Title: Improvements in and relating to electric thermal switches operated by "glow discharge"
IPC: H05B41/08
Filed: 1946-07-25
Abstract: 614,754. Thermal switches. NEONELECTRIC CO., Ltd.; and MORGAN, R. J. B. July 25, 1946, No. 22220. [Class 38 (v)] [Also in Group XL (a)] A glow switch for starting electric discharge lamps, Fig. 3 (not shown) has an M-shaped bimetallic strip 10 having one limb 9 welded to a stiff nickel wire 7 and the other limb 11 to which may be welded a contact rod 12, spaced approximately 1 mm. from a further stiff wire 8. Both wires are supported in a re-entrant pinch 6 of a glass envelope 4, which may be metallized by spraying or by covering with foil or sheet metal, and filled with neon or a mixture of neon and hydrogen at a pressure of 25 to 40 mm.
Patent GB-885918-A (GB)
Title: Improvements in or relating to ventilator grilles
IPC: F24F13/15
Filed: 1957-01-25
Abstract: 885,918. Ventilators. BARKER, D. R., and BARKER, W. H. April 17, 1958 [Jan. 25, 1957], No. 22311/60. Divided out of 885,917. Class 137 Relates to a ventilator grille 1 of the type fitted in a vertical position into an air duct or wall opening and comprising a set of intersecting horizontal blades 2 and of vertical blades 3, forming a honeycomb of cells. According to the invention, each blade comprises a plurality of units 2a, 3a mounted on a common rod 4 and all the units of one set are V-shaped on their forward or rear edge while those of the other set are V-shaped on the opposite edge, the pivot rods 4 passing through the intersections of the V-shaped notches so that the direction of the cells formed by the blades can be adjusted by rotating the blades. The angle of the V-shaped notches is 90 degrees to allow a 90 degrees adjustment of each set of blades.
Patent GB-906528-A (GB)
Title: Production of alkyl pyridines
Inventor: HARGRAVE KENNETH RAYMOND
IPC: C07D213/09
Filed: 1960-06-25
Abstract: Alkyl pyridines are produced by heating a mixture of crotonaldehyde, propanol and ammonia, preferably at a temperature from 300 DEG  to 500 DEG C.  The process is preferably carried out in the presence of a condensation catalyst, e.g. silica, alumina or a mixture of these. In addition the catalyst may also contain an oxide of titanium, zirconium, cerium or thorium and also zinc, cadmium, tin, lead, tungsten, nickel, cobalt, chromium, molybdenum, iron, copper, palladium or silver either as the metal or a compound thereof.  Some water may be present in the reaction mixture.  In the example a mixture of crotonaldehyde, propanol and ammonia are heated in the presence of alumina and silica impregnated with zinc oxide to give a mixture of a -picoline, g -picoline, 2-ethyl pyridine and 3,4-lutidine.
Patent GB-1341123-A (GB)
Title: Hydropneumatic suspension for a motor vehicle
IPC: B60G21/06
Filed: 1971-04-19
Abstract: 1341123 Hydropneumatic suspension systems INDUSTRIAL DEVELOPMENT CO 19 April 1971 [24 Feb 1970] 22341/71 Heading B7D  In an hydropneumatic suspension system for a motor vehicle, suspension units 1, 2 for connection between the vehicle chassis and respective road wheels at opposite sides of the vehicle include main spring chambers 13, 20 and antiroll chambers 23, 24 and 27, 28 which are crossconnected by pipes 29, 34 communicating with respective hydropneumatic springs 30, 35, the main spring chambers 13, 20 are fed from an hydraulic accumulator 205 through a levelling valve 202 and the pipes 29, 34 are supplied from the accumulator 205 through a switching 213 and a variable pressure regulator 211 which provides for adjustment of the roll stiffness to suit the loading on the vehicle. The switching valve 213 includes a spool 214 which is displaced against spring loading when the pressure rises in either pipe 29, 34 due to the vehicle rolling so as to cut-off communication between the pipes 29, 34 and a feed pipe 210 from the pressure regulator 211. The spool 214 has a central throat which is sufficiently wide to prevent cutoff during slight rolling movements. The pressure regulator 211 is manually adjusted by a lever 212 or controlled automatically by electronic or mechanical means responsive to the movements of the vehicle on bends. The accumulator 205 is charged by a pump 203 to a pressure determined by a relief valve 204.
Patent GB-705167-A (GB)
Title: Improvements in or relating to hectographic carbon papers
IPC: B41M5/04
Filed: 1950-09-11
Abstract: 705,167. Hectograph papers. O'NEILL, H. A. Sept. 11, 1951 [Sept. 11, 1950], No. 22362/50. Class 100 (4). [Also in Group VIII] A process for the manufacture of hectographic carbon paper comprises coating a web of paper with a hectographic transfer coating and applying thereover a continuous non-tacky protective film of wax dissolved or dispersed in a hydrocarbon or halogenated hydrocarbon solvent, the wax and the solvent being non-solvent for the dyestuff employed in the hectographic transfer coating. The transfer coating may comprise a spirit soluble dye, e.g. methyl violet in a vehicle of waxes, oils and plasticizer and applied at approximately 95‹ C. by a coating roller associated with a thickness control scraper. The protective coating may be app'ied by a second coating roller at approximately 40-50 ‹ C., solidification being assisted by cooling rollers. The solvent for the protective coating may consist of, separately or in combination, an aromatic hydrocarbon such as benzole, toluol or xylol and an halogenated hydrocarbon such as carbon and tetrachloride or a petroleum distillate such as petroleum ether or white spirit. The wax in the protective coating may consist of crystalline or amorphous wax, e.g. paraffin wax, or hydrocarbon wax or a synthetic wax. The solvent is removed and recovered from the coated web by an air tunnel.
Patent GB-517541-A (GB)
Title: Improvements in or relating to electrical resistances
IPC: H01C1/16
Filed: 1938-07-28
Abstract: 517,541. Resistance casings and electrostatic shields sets of resistances; cooling resistances; voltage measurements. BRITISH SANGAMO CO., Ltd. (Weston Electrical Instrument Corporation). July 28, 1938, No. 22462. [Class 37] A high voltage resistor comprises one or more resistance units surrounded by a metal shield and located within an insulating casing which may be sealed from the atmosphere and filled with insulating and heat conducting medium such as oil. In the construction shown in Fig. 1, a number of resistance units 1 are mounted within a borate glass tube 5 provided with terminal mounting lugs 8. Each resistance unit may be a carbonaceous or wire resistance carried in an insulating cylinder, or may be a mixture of ceramic and carbonaceous material, and is provided with terminal end caps 2. Each unit is mounted within a cup-shaped metal shield 3 by means of a clip 4 engaging the lower terminal cap. The upper terminal cap 2 projects slightly above the shell 3 so at to make contact with the bottom of the next unit. At each end of the glass tube 5 are spacers 6 through which pass lead-in wires 7, 7<1>. The lower lead 7 is soldered to the bottom of the shield 3 of the lowest unit and to the lower terminal lug 8. At the upper end of the tube is a terminal cup 9 pressed against the upper cap of the top unit by an internal spring 10. The upper lead 7' is soldered to the cup 9 and the upper terminal lug 8. The tube 5 is filled with an insulating and heat conductive medium such as light oil, wax, asphaltum, pitch, or mica dust. The pressure within the tube during operation may be. made equal to normal atmospheric pressure by exhausting during assembly to somewhat below atmospheric pressure at room temperature. The metal shields 3 provide good heat transfer from the resistances to the outer casing and also serve as electrostatic shields to establish a definite potential gradient along the resistor. In a modification a sylphon bellows is provided at the upper end of the tube 5 for preventing pressure charges within the tube as the temperature of the resistor varies. In another construction, Fig. 3, end caps 23 of metal or insulating material are cemented to the ends of the tube 22 containing one or more resistor units 1. The terminal wires 24 pass through the end caps 23 and are soldered to metal discs 25 held in place by insulating plugs 26 threaded into the ends of the tubes 22, the wires being sealed in by cement 26<1>. A spring washer 27 contacts with the upper cap 2 of the resistor. The resistor may be supported on insulators by the lugs 8 so as to be spaced from an earthed metal panel on which a voltmeter is mounted. One terminal of the voltmeter is earthed to the panel, the other being connected to one terminal of the resistor. A low voltage insulator is connected between this terminal and earth as a safety device.
Patent GB-479671-A (GB)
Title: Improvements in the generation of heat by chemical action
IPC: C09K5/18
Filed: 1937-08-16
Abstract: 479,671. Heating by chemical action. DREIDING, B. Aug. 16, 1937, Nos. 22483 and 22484. Convention dates, Nov. 24, 1936 and June 19, 1937. [Class 64 (ii)] Heat is generated by the action on aluminium foil, or a sheet faced with aluminium on at least one side, of stannous chloride in the presence of moisture. An intermediate layer which retards the penetration of moisture is provided. The aluminium foil may be faced on one or both sides with paper, or a sheet of cellulose fibre, wood meal or the like may be faced with aluminium powder. The stannous chloride,. or alternatively, stannic, cuprous or cupric chloride, may impregnate a sheet of paper which is moistened and applied to the aluminium sheet when heat is required. The method may be used for applying heat to hair in permanent waving, for thawing frozen water pipes, or for warming liquids or foods in bottles or tins. The intermediate layer may be provided with reaction-retarding substances, or such substances may be present in the sheet faced with aluminium.
Patent GB-137781-A (GB)
Title: Tea leaf rolling machine
IPC: A23F3/12
Filed: 1919-09-12
Abstract: 137,781. Tempelaar, H. A. Sept. 12, 1919. Tea, rolling.-In a tea-rolling machine of the type comprising a receptacle moving over a moving table, the receptacle is square in plan and two of its sides are hinged on horizontal axes, so that they can be turned inwards to put pressure on the leaves. In the form shown, the upper part b of the receptacle alone is square, and the hinged sides k, l can be forced inwards by means of a screw o and hand-wheel p. The receptacle is supported at c and d by' eccentric journal bearings in disks running on balls, and at e by a crank which also serves to drive it. The table h is similarly mounted and driven.
Patent GB-864055-A (GB)
Title: Improvements relating to the door frames of horizontal coke ovens
IPC: C10B25/06
Filed: 1957-07-18
Abstract: 864,055. Coke-oven doors. KOPPERS G.m.b.H., H. July 18, 1957 [July 18, 1956; Feb. 7, 1957], No. 22749/57. Class 55 (1). In a horizontal coke-oven the door frame 1, Fig. 1, is detachably connected to a flash-plate 3, by means of a series of spring-pressed clips 18 which are located in recesses 16, 17 in the members 3, 1, spaced inwards from the outside surfaces of the members. The door frame 1 may be of T-shape in cross-section with one limb 11 bearing against a limb 8 of the profiled flashplate 3 and sealed thereto by soft packing 12, 13. The clips 18 may be inserted through gaps 21 between the door frame 1 and flash-plate 3 and then turned bayonet fashion to abut against stops formed on the faces of the recesses 16, 17. Plate springs 26 bear against the door frame 1 and also against screws 24 threaded into recesses in the clips 18, guiding pins 25 being provided on the screws 24. Ribs. 29 are arranged immediately above the clips 18 to prevent contamination by tar and to reinforce the door frame 1. In a modification, Fig. 3, each screw 24 has a pin 25 engaging a flared recess 33 in a thrust member 34 which has a collar 32 against which the springs 26 bear.
Patent GB-747959-A (GB)
Title: Roller cleaning device for draft systems, in particular draft systems of flyer type textile spinning machines
IPC: D01H5/64
Filed: 1954-08-05
Abstract: 747,959. Roller cleaning device. TOENNIESSEN, E. Aug. 5, 1954, No. 22808/54. Class 120 (2). A roller cleaning device for draft systems of textile spinning machines having cleannig boards engaging under the lower rollers, extending from the delivery rollers to behind the intake rollers and rotatably mounted at the rear such that the front end on release can drop down is characterized by the front ends of the lower cleaning media being held in their position of application by a releasable locking-device and suspended at their rear bearing positions in such a way that on hinging down they also move forward. As shown, the invention is applied to a system having four pairs of rollers 1-I, 2-II, 3-III and 4-IV. The lower cleaning surface consists of an endless band 9 stretched over a frame 10 from the rear of which extends wire hooks 16 by which it is hung on an oscillating shaft 8. The front end of the frame 10 is held in the operative position by a spring clip 17. To release the cleaner, the spring 17 is pulled forward, thus allowing the cleaner to drop down and move forward to the position shown in Fig. 2. To replace the cleaner to the operative position it is merely pushed back and upwards so that the front edge of the frame 10 contacts the inclined surface 21 of the spring 17, thus forcing it outwards until the frame 10 is in the operative position when the spring 17 returns to its normal position to hold the frame in place. The upper cleaning 5 is moved backwards and forwards by a push-rod 6 loosely connected to a lever arm 7 connected to the oscillating shaft 8. In a second embodiment the upper cleaner is merely pushed forward, the return motion being brought about by the rotation of the upper rollers.
Patent GB-765205-A (GB)
Title: Improved front clasp for a corset or the like
IPC: A41F1/04
Filed: 1954-08-05
Abstract: 765,205. Corset or like clasps. SPIRELLA CO. OF GREAT BRITAIN, Ltd., and TARLTON, J. W. July 13, 1955 [Aug. 5, 1954], No. 22839/54. Class 44. A front clasp for a corset or like garment comprising two bars of limited flexibility, one having at least one closed slotted loop such as 3 affixed thereto with the slotted part 4 extending from one edge thereof and the other having at least one headed stud 6 affixed thereto with the head of the or each stud spaced from the face of that bar and one of the two bars having one or a number of hooks 5 affixed thereto in a position or positions longitudinally spaced in relation to the slotted loop or loops or headed stud or studs thereon and extending from one edge of the bar, and the bar other than that bearing the hook or hooks being formed of a main part 2 and a secondary part 7 disposed in face to face relationship with at least a part of the length of the adjacent faces spaced from one another and one or more fixed pins 8 bridging the space between the said main and secondary part and located in longitudinally spaced relationship to the slotted loop or loops or headed stud or studs on that bar similar to that of the hook or hooks and the slotted loop or loops or headed stud or studs on the other bar 1. As shown, an angle loop 3 and two hooks 5 are provided on the bar 1 and the other bar carries a single headed stud 6 and two pins 8. The slotted loop 3 is fixed either to the top or bottom of the bar 1 and it is cranked so that the two bars can take coplaner positions. The slots 11 in the hooks 5 are inclined to the general longitudinal direction of the bar so that when the clasp is under tension the pins 8 tend to be urged into the hooks 5. The clasp is fastened by first engaging the hooks 5 with the pins 8 after which the slot 4 is engaged with the headed stud 6.
Patent GB-281790-A (GB)
Title: Improvements in or relating to machines for displaying and dispensing soap tablets or the like
IPC: A47F1/10
Filed: 1926-09-17
Abstract: 281,790. Cramp, R. Sept. 17, 1926. Contents, delivering.-In a box or cabinet for holding and dispensing tablets of soap &c. the lowermost tablet in a pile rests on an ejector member 8 mounted to oscillate or rotate on a shaft 11 and actuated, when a lid 9 is raised, to deliver the tablet into a delivery member 12 from which it may be taken; if the tablet is not taken from the delivery member or is returned thereto subsequent raising of the lid does not actuate the ejector member. The lid 9 is connected by links 16, 17 to the shaft 11 on which is fixed a quadrant 18 having a gap 21 in which a pawl 20, freely pivoted on the ejector 8, falls. On opening the lid the ejector is moved back by the quadrant until its end 8<c> is supported by the back 10 of the box &c. and a tablet, previously supported by the surface 8<b> of the ejector, falls into the ejector while the tablet in the delivery member 12 may be taken, the member 12 being then raised by a spring 14; as the lid is closed, the member 8 is moved forward by the quadrant and delivers its tablet to the member 12 which is freely mounted on the shaft 11 and drops by the weight of the tablet against the action of the spring 12. If the tablet in the member 12 had not been taken when the lid 9 was opened, or if, after inspection, it had been replaced in the member 12, the latter does not rise when the lid is closed and a cam 15 thereon engages the pawl 20 to hold it out of engagement with the gap in the quadrant so that if lid is again opened, the ejector member is not actuated. The box or cabinet may have a number of compartments which are closed by a common lid and the tablets are received by channelled guides 2 in each compartment, the centre line of each guide being behind the axis of the shaft 11 so that the weight of the tablet automatically tilts the ejector backwards and permits easy disengagement of its pawl 20 from the gap 21 in the quadrant. The guides 2 are provided with slots to take the front glass 3 and a back board 4 which are arranged so that the tablets do not contact therewith while the flanges of the guides 2 are cut away at the top of the compartment to permit easy housing of the tablets therein and at the bottom to permit of the operation of the ejector mechanism. Specification 251353 is referred to.