baber/WOPTO huggingface dataset:
Patent GB-222836-A (GB)
IPC: C01B33/10
Filed: 1924-07-24
Abstract: Hydrofluosilicic acid is produced by the interaction of sulphuric acid, fluorspar and silicon fluoride.  In an example, molecular proportions of sulphuric acid and calcium fluoride are heated in a closed vat and a molecular proportion of silicon fluoride then introduced.  After the reaction the mixture is removed and the precipitated calcium sulphate separated from the solution of hydrofluosilicic acid by filtration.  The Specification as open to inspection under Sect. 91 (3) (a) states that by using the appropriate components other complex hydrofluoric acids such as hydrofluoboric acid may be similarly prepared; also, acids other than sulphuric acid may be employed. This subject-matter does not appear in the Specification as accepted.
Patent GB-1524349-A (GB)
Title: Folding pushchair
IPC: B62B7/08
Filed: 1977-04-28
Abstract: 1524349 Folding push chair KASSAI K K 28 April 1977 [15 July 1976 23 July 1976] 17763/77 Heading B7B The chair is constructed so that it is maintained in its erect condition by the weight of the child. The seat (not shown) is so arranged that the weight of the child acts on the front ends of rods 5 whose knuckle joints with shorter rods 6 are thereby maintained straight. In addition, the weight of the child bears, through connecting rods 7 on front struts 9 to maintain them in their unfolded condition.
Patent GB-479415-A (GB)
Title: Improvements in processes and devices for the heating of double-walled heat insulating containers for the purpose of drying of evacuation
IPC: C03C17/10
Filed: 1937-06-25
Abstract: 479,415. Evacuating vacuum flasks. JUNGHANNS, K. June 25, 1937, No. 17799. Convention date, June 25, 1936. [Class 8 (i)] [Also in Group XIII] During the process of drying or evacuation of a double-walled insulating container the inner wall is heated by an electric heater. The heating unit d<2> is carried on a sliding pin d, which also carries an asbestos cone d<1> for closing the container neck during heating, and a fork d' for operating the supply switch g.
Patent GB-891975-A (GB)
Title: Paving material spreader
IPC: E01C19/42
Filed: 1960-05-20
Abstract: 891,975. Paving material spreading machine. JAEGER MACHINE CO. May 20, 1960 [Jan. 26, 1960], No. 17820/60. Class 107 A paving material spreading machine comprises a main truck unit 30 supporting a screed 32 and an outrider unit 31 pivotally connected to the front of the main unit which supports a screw conveyer 130 and strikes-off plate 118a. The main truck unit includes a central frame 30a supported on each side by truck units 35, tubular members 78 clamped to the truck units extend inwardly and telescope within corresponding tubular members 75 forming the front and rear truss members of the central frame. The wheels 33 of each truck unit, which run on forms 34, are driven via a telescopic drive shaft from a motor 67 mounted on the central frame. The outrider unit 31 includes a central frame section 31a supported by side trucks 35a to which are clamped tubes 78a which telescope within a tube 75a forming a truss 36a for the frame 31a. The side trucks 35a are pivotally attached to truck units 35 and the outrider central frame 31a is pivoted to the main central frame section 30a. From the outrider central frame an extensible frame assembly 100 is suspended by rocker arms 112 and rods 108. The frame supports a screw conveyer 130 and strike off plate 118a and is vertically slidable in guide structures 115a attached to the front truss of the central frame of the main truck unit. Rotation of a rocker bar 113 by actuation of an hydraulic ram 120, pivotally attached to the central frame of the main unit, raises or lowers the conveyer and strike off plate. The two halves of the conveyer may be driven in either direction by hydraulic motors mounted on frame 100. When the machine is extended the length of the conveyer and strike off plate is increased by adding additional sections. The screed 32a mounted beneath the main unit may be raised and lowered by an hydraulically operated rocker arm and reciprocated by a motor driven crank and pitman mechanism.
Patent GB-276792-A (GB)
Title: Improvements in or relating to electrical transformers
IPC: H01F27/26
Filed: 1926-07-16
Abstract: 276,792. Igranic Electric Co., Ltd., and Curtis, A. H. July 16, 1926. Transformers such as those described in Specifications 205,013 and 246,535, have core laminations 1 clamped along three sides by a channel member 5 arranged to embrace them. The channel member also secures in position a pair of shrouding members 4a forming an enclosure for the core and windings 2. The ends of the member 5 and the lower edges of the members 4a are provided with projecting tongues engaging slots in a base plate 6 provided with upturned projections 6<a> serving to clamp the laminations 1 along their lower side. Insulating blocks 8 carrying the transformer terminals 7 are riveted to the shrouding members 4a, and record labels may be inserted in the opening in the base or in an opening 5<c> provided in the upper side of the channel member 5. The windings may be arranged in sections on separate formers having insulated perforated end flanges.
Patent GB-145732-A (GB)
Title: Acid resisting receptacles such as boilers, pipes and the like
IPC: B65D90/02
Filed: 1920-07-02
Abstract: 145,732. Krupp, Akt.-Ges., F. June 17, 1918, [Convention date]. Tanks.-A vessel for heating or containing acids has an inner and outer wall of acid-proof iron, the space between being cast full of lead.
Patent GB-593948-A (GB)
Title: An electron discharge apparatus and regenerative circuit therefor
IPC: H03F3/02
Filed: 1945-07-16
Abstract: 593,948. Thermionic valves. MALPAS, H. A. July 16, 1945, No. 18076. Drawings to Specification. [Class 39 (i)] An electron discharge device having two cathodes and a central grid as described in Specification 573,097, further comprises in the interior thereof two interconnected inductance coils, one coil surrounding one cathode and the other coil surrounding the other cathode. The coils, which may have a pitch of 3 mms. extend along the whole length of the cathodes and are spaced from them by at least 2 mms. The lead-in wires to the coils may be taken out through the base or the top of the valve. The valve may be used in a regenerative circuit, Fig. 2 (not shown). A coil located outside the valve and carrying oscillatory current is connected in series with the coils inside the valve, so that incoming oscillations can be impressed on the grid. The coils inside the valve are biassed positively so that they also function as anodes, and two conventional screen-grid valves are provided for detection and amplification purposes.
Patent GB-166129-A (GB)
Title: Improvements in or relating to method of and means for preventing corrosion in evaporating and distilling apparatus
IPC: B01D1/28
Filed: 1921-07-04
Abstract: 166,129. Akt.-Ges. Kummler & Matter. July 7, 1920, [Convention date]. Vapours, utilizing for effecting further evaporation. - Acid vapours generating in evaporating liquids are neutralized by injecting an alkaline substance into them, prior to compression, in order to protect the compressors from corrosion. The compressed vapours may be utilized as the heating-agents to effect evaporation of the liquid. Gaseous ammonia, a solution of caustic soda or potash, or a dry powdered alkaline substance or alkaline vapours from a second evaporator may be used. The materials may be injected into the dome of the evaporator or into the vapour pipes, and the excess may be separated in the form of an aqueous solution by baffle plates and again injected until the solution is neutral. As shown in Fig. 1, the vapours from the evaporator 25 are withdrawn by a multi-stage compressor 27 and passed by a pipe 28 to the heater 29. Alkaline solution is forced by a pump 31 from a tank 32 into the first stage of the compressor, and is separated in the second stage and returned by a pipe 33 to the tank 32.
Patent GB-739298-A (GB)
Title: Improvements in grinding machines
IPC: B24B47/04
Filed: 1953-06-30
Abstract: 739,298. Grinding. FOUQUET, E. June 30, 1953, No. 18150/53. Class 60. A grinding wheel 3 is fixed to a spindle 2 rotatably mounted by radial and axial thrust anti-friction bearings in a housing 1. The housing body comprises two gears 4, 4<SP>1</SP> and two pairs of bearer rings 5, 6 and 5<SP>1</SP>, 6<SP>1</SP> on opposite sides thereof, the diameter of the bearer rings being equal to the pitch line diameter of the gears. The gears 4, 4<SP>1</SP> mesh with racks 7, 7<SP>1</SP> on the machine frame 8, and the bearer rings 5, 6, 5<SP>1</SP>, 6<SP>1</SP> roll on rails 9, 11, 91, 11<SP>1</SP> whose faces coincide with the pitch line of the racks. The gears 4, 4<SP>1</SP> also mesh with racks 12, 12<SP>1</SP> slidably arranged in guides 13, 13<SP>1</SP> on the machine frame 8, two pairs of tracks 14, 15 and 14<SP>1</SP>, 15<SP>1</SP> being arranged on opposite sides of the racks 12, 121. The housing body has lever arms 16, 16<SP>1</SP> connected by a pin 17 to.a link 19 the other end 21 of which is connected to a lever 22 pivotally mounted at 23 on the machine frame 8. The lever 22 is oscillated by a link 24 actuated by a crank-pin 25 on a crank-wheel 26 driven by an electric motor, thus rotating the housing 1 and causing it to roll to and fro on the racks 7, 71 to reciprocate the spindle 2. The rotation of the housing may alternatively be effected by the winding and unwinding of metallic tapes actuated hydraulically, or at least one of the racks 12, 12<SP>1</SP> may be reciprocated. Helical gears and racks having teeth with opposite helix angles are preferably used to eliminate axial thrust, and to permit adjustment to take up backlash. A pulley 27 keyed to the spindle 2 is driven by belt 28 from a pulley 29 on the shaft of the electric motor.
Patent GB-406677-A (GB)
Title: Improvements in and relating to electric discharge tubes
IPC: H01J21/12
Filed: 1932-06-27
Abstract: 406,677. Discharge apparatus; valve amplifying circuits. HARRIES, J. H. 0., Shirley, Old Road, Frinton-on-Sea. June 27, 1932, No. 18175. [Classes 39 (i) and 40 (v).] In a valve or other discharge tube having a cathode, a control grid, and anode, and at least one auxiliary electrode between the control grid and the anode, the auxiliary electrode consists of at least two portions in substantially the same plane, one of the portions having sufficient wires or other parts, without intervening parts of the other portion, for the field or shielding effect over the first portion to be substantially even, and means are provided for changing the relative potentials of the portions so that (a) an even field is produced when the portions have the same potential and (b) an uneven field and a variable mutual conductance are produced when the portions have different relative potentials. The two portions 1, 2 of an auxiliary grid are shown in Figs. 2 and 3 respectively ; the portion 2 is slipped over the portion 1 to form the electrode shown in Fig. 4. The portion 1 consists of a flat helix 5 supported on rods 3 and formed with gaps 7 ; there are sufficient wires in each section of the helix to ensure an even field over that section. The portion 2 consists of wires 6 of uneven pitch, supported on rods 4 and arranged so that when the portions are assembled the electrode acts as a grid of even pitch. The width of the cross-section of the portions is such as to enable one to be slipped over the other, and the wires may be bent so as to obtain an even mesh. The wires may be wound on a single support, and parts of one or more supports may be insulated by a porcelain sleeve or by a coating. The electrode may be built up of portions of stamped grids. The auxiliary grid shown in Fig. 5 consists of a portion formed as a continuous helix 18 and two end portions 19 on separate rods ; or a single end portion may be used. The portions of the grid may be connected by a resistance consisting of a coating of metal on glass and mounted with a switch in the valve cap. In the amplifying circuit shown in Fig. 8, an input circuit L<1> C<1> is connected between the control grid 33 and the cathode 30, and a tuned circuit L<2> C<2> in the anode circuit ; the portion 24 of the auxiliary grid is connected with a high potential, and through a resistance R<2> with the other portion 23, so that the portion 23 is at a lower potential, and a variable mutual conductance is produced. The resistance R<2> may be short-circuited by a switch S, so that the valve acts as an ordinary screened-grid valve. A potentiometer may replace the resistance. In another arrangement a switch is arranged so as to connect the portions 23, 24 together to a high potential, or the portion to the cathode or to a higher potential than the portion 24. Specification 385,968 is referred to. According to the Provisional Specification the control grid may be formed in two portions to which the same or different potentials may be applied.
Patent GB-517727-A (GB)
Title: Improvements in lawn mowers
IPC: A01D34/62
Filed: 1938-06-18
Abstract: 517,727. Lawn-mowers. CLEMSON BROS., Inc. June 18, 1938, No. 18185 Convention date, June 18, 1937. [Classe 6 (ii)] The bed-knife 19 co-operating with the cutting reel 11 of the lawn-mower is mounted to turn about an axis 18a disposed sufficiently outside the plane tangent to the reel at the point of contact of the bed-knife therewith to ensure that any obstruction which is engaged between the fly-knives 10 'of the reel and the bed-knife tends to press this knife more tightly against the reel, and means are provided to limit the movement of the bed-knife away from the reel while permitting free movement thereof towards the reel. Reference is made to Specification 380,398 in which the movement of the bed-knife towards the reel is assisted or followed up by a spring controlled cam. In the form shown, the limiting means comprise a projection 20 on the back 18 of the bed-knife and an abutting screw 21 on a threaded collar on the frame of the mower. The threaded collar is split and provided with a tightening screw 22 to lock the abutting screw 21 in adjusted position. The frame shown is constructed as described in Specification 517,726.
Patent GB-121338-A (GB)
Title: An Improved Elevator or Load-raising Device.
Inventor: ELLIOTT BERTRAM WARREN
IPC: B66F19/00
Filed: 1917-12-11
Abstract: 121,338. Elliott, B. W. Dec. 11, 1917. Load, depositing.-A shell &c. to be raised by the lever d is transported by a sack barrow up the incline f and deposited with its axis vertical on the shelf h of a cradle e which can roll to the position shown in Fig. 1 to deliver the shell on to a turntable k carried by the end of the lever. The cradle may be held in the position shown in Fig. 2 by a locking member l which is released by a striking bar l<1> and pedal l<2>. The axle and cross bar of the barrow may be engaged by a loading tongue g<1> for facilitating the transfer of the shell to the shelf h.
Patent GB-208740-A (GB)
Title: Improvements in and relating to diesel and like engines
IPC: F02B3/00
Filed: 1922-07-04
Abstract: 208,740. Attendu, A. C. July 4, 1922. Regulating. - In Diesel and like two-stroke engines, the timing of the exhaust closure is made adjustable so. that the quantity of air charge retained in the cylinder may be reduced as the speed increases, and vice versa. Fig. 2 shows an engine in which a pumping- cylinder 13 supplies an adjacent working cylinder 12 through a mechanically-actuated valve 22, more or less of the charge, escaping through the exhaust ports 19, according to the adjustment of a rotary valve 20. In a modification, terminal inlet ports controlled by the piston are provided opposite the exhaust ports, instead of the valve 22. The timing of the valve 20 is adjusted by sliding a helically grooved sleeve 26 axially within a correspondingly grooved boss 25 of the gear wheel 24.
Patent GB-669311-A (GB)
Title: Improvements in carrying out chemical reactions
IPC: B01J8/16
Filed: 1948-07-08
Abstract: <PICT:0669311/III/1> Vibrations are applied transversely to the fluid flow in chemical reactions wherein a finely divided solid is fluidized by an upwardly flowing gas or liquid stream.  An embodiment suitable for the production of sulphur trioxide by the oxidation of sulphur dioxide comprises a reaction chamber 12 electrically heated by coil 11, containing a bed of finely divided potassium vanadate catalyst on a sintered kieselguhr carrier supported on a horizontal perforated plate 14 and fluidized by gaseous reactants entering by pipe 13, whilst vibrations of 50 c.p.s. are applied by an electrically operated vibrator 16.  The vibrations, produced by vibrators of known kind, may be transmitted to the fluidized bed through the reactor walls or by devices also adapted to serve other purposes such as stirrers or heating and measuring devices.
Patent GB-961743-A (GB)
Title: Device for intermixing two or more liquid components of different specific weight in closed vessels
Inventor: SALAC JAROSLAV
IPC: B01F9/00
Filed: 1962-05-14
Abstract: 961,743. Conveyers. CHOTEBORSKE KOVODELNE ZAVODY NARODNI PODNIK. May 14, 1962, No. 18439/62. Heading B8A. [Also in Division B1] In an apparatus for agitating bottled beverages the bottles are brought from a vertical to a horizontal position, rotated on their axes and returned to the vertical, while following a linear path. As shown, the bottles are supplied by a conveyer 1 to a screw conveyer 3 from which they are transferred by guideways 12, 13 to an endless band conveyer 5 having compartments 4 formed by transport arms 14. In course of transfer the bottles pass over a helical surface (see Fig. 3, not shown) which tilts them from a vertical to a horizontal position; as they fall they rest on the sloping guideway 13 and when horizontal they rest on and are rotated by rollers 28 which are driven by an endless band 19 the drive roller 16 of which is driven by the motor 8 through means not depicted. The bottles are returned to the vertical by a second helical surface 20 in course of transfer by guides to a delivery conveyer 22. The worm conveyer 3 is synchronized with the conveyer 5 by driving it from the drum 7 by bevel and chain gearing 23, 24, 25, 26.
Patent GB-266601-A (GB)
Title: Incandescent lamp for automobile headlights
IPC: H01K1/32
Filed: 1926-07-24
Abstract: 266,601. Austin, N. C. July 24; 1926. Bulbs. - In anti - dazzle lamps for vehicles of the kind wherein the bulb is translucent from the rear to a plane x - - x lying in front of the filament so as to diffuse the rays that proceed to the reflector 5, while the front of the bulb that transmits light directly out of the lamp is transparent, the plane x - - x is inclined to the vertical to allow light to pass downwardly to the road. The transparent part of the bulb may extend into a bay 12 at the underside to allow some undiffused light to be reflected on to the road.
Patent GB-1431448-A (GB)
Title: Coumarin derivatives
IPC: C07D249/06
Filed: 1973-04-18
Abstract: 1431448 Coumarin derivatives PRODUITS CHIMIQUES UGINE KUHLMANN 18 April 1973 [18 April 1972] 18650/73 Heading C2C The invention comprises compounds of Formula I where R is C 1 -C 5  alkyl optionally substituted by a non-ionic non-chromophoric group, one of R 1  and R 2  is a triazole radical and the other is hydrogen, halogen or C 1 -C 3  alkyl, the triazole is optionally substituted by one or two groups selected from C 1 -C 3  alkyl or benzene radicals optionally substituted by up to three substituents. These compounds may be obtained (a) by reacting a diazonium salt II with a coumarin III (the process exemplified) (b) by reacting an orthohydroxybenzaldehyde IV with an acid V or a functional derivative (e.g. alkali metal salt, nitrile, methyl or ethyl ester) thereof (c) by alkylating with for example an alkyl sulphate a compound of Formula I in which R is H. The preparations of diazo compounds II from the corresponding amines are described. Also described is the preparation of I, in which R 1 =CH 3 , R 2 =4,5 - dimethyl - 1,2,3 - triazol- 2-yl and R 3 =Cl, by treatment of the corresponding N 1  oxide with Zn/HCl, the N 1  oxide itself being obtained by reaction of the N 1  oxide of the corresponding compound II with 7-methoxycoumarin. The compounds are used as optical brighteners for polyester fibres.
Patent GB-152796-A (GB)
Title: Improvements in flushing valves
IPC: E03D3/10
Filed: 1919-07-28
Abstract: 152,796. White, W. S. July 28, 1919. Valves controlled by pilot or relay valves.-In a flushing valve by which a measured quantity of water is delivered through a main valve which closes slowly under the control of an auxiliary air valve, a container 10 is provided with a cylinder 10<a> in which a valve 11 is guided. Water is supplied by the inlet 27 and discharged by the outlet 13 to a bowl or other fixture. The valve 11 is unseated by a trip finger 19 pivoted on a plate 20 which is pivoted at 21. The plate 20 is connected by a link with a rock-shaft 22 which may be operated by an external handle. An annular air chamber 26 is provided between the depending cylinder 15 and the outer casing 10. A vertical passage 27 communicates at its lower end with the chamber 26 and at its upper end with the chambers 29, 30 through a valve 32. A valve 34 controls communication between the chambers 30 and 10<a>. A sleeve 35 sliding on the neck 31 normally gravitates to its lowest position and is adapted to be closed by a projection 36 on the valve 11. A bar 37 connects the valve stem 33 with the lever 38 so that the valves 11, 32 may be lifted simultaneously by the rock-shaft 22. When the valve 11 is closed, the chamber 26 and its connexions are filled with air. When the shaft 22 is operated to lift valves 11 and 32, the plate 20 is moved so as partly to close the passage 15. The piston 11 permits a limited quantity of water to flow upward into the cylinder 10<a>, neck 13, chambers 30 and 29, and then downward through the passage 37 and outlet 13 to the bowl. The upward pressure rapidly raises the valve 11 until the part 36 comes into contact with the sleeve 35, which causes a slower movement until the neck 31 is closed. When the shaft 22 is released, the plate 20 again moves into its vertical position and water flows directly from the inlet 12 to the outlet 13. The passage 15 is larger than the outlet 13 and the resulting pressure in the chamber 26 forces the air upwards through the passage 37 and valve 32 to the chamber 30. A suction is produced below the valve 11, which assists it to close. The valve 34 is regulated so as to control the passage of air downwards through it and thus regulate the period of flushing. When the water supply is small and it is necessary to supply a volume sufficient to create a siphon action in the bowl, an auxiliary pipe 49 is provided, communicating with a pressure tank 50. A pipe 48 communicates through a ball valve 51 with the chamber 30 so that the air in the tank 50 is replenished at every operation of the flushing-valve. The obstruction of the outlet by the plate 20 and the rising of the water in the air chamber 26 ensures a sufficient quantity of water to refill the bowl after flushing. The spindle 22 of the rock-shaft is provided with a rubber sleeve 41, Fig. 5, one end of which overlaps the flanged collar 42 and is retained between the flange 42 and the boss 40a by means of the nut 40. The nut may thus be tightened to give a watertight joint without binding against the flange 44 on the shaft 22.