baber/WOPTO huggingface dataset:
Patent GB-598941-A (GB)
Title: Device for the automatic control of electric arc furnaces
IPC: H05B7/00
Filed: 1945-09-26
Abstract: 598,941. Automatic control systems. GRANGETTE, L. Sept. 26, 1945, No. 24994. Convention date, July 18, 1939. [Class 38 (iv)] Arcs.-In an automatic control system for an electric arc furnace, a relay responsive to arc voltage controls the supply voltage and a relay responsive to supply current or power controls electrode spacing. In Fig. 4, the supply to an arc furnace 10, having an electrode 12 movable by a reversible electric servomotor 53; is from a mains transformer 19 having a tapped secondary 21 adjustable by an electric servomotor 23. Normally, motor 53, supplied from an auxiliary source 24, 29, is selectively controlled through a relay 48 from a wattmeter relay 41, responsive to the power supplied to the furnace, so that the furnace electrode is adjusted to maintain the power supplied to the furnace between predetermined limits determined by the position of. adjustable contacts 44, 44<1>. However, if the arc voltage falls below a predetermined value, a relay 35, responsive to arc voltage and having an adjustable contact 36, energizes a relay 28 to cause operation of motor 23 to raise the supply voltage and at the same time ensures that motor 53 cannot operate. In a modification, relay 35 is two-way to maintain the supply voltage between predetermined limits and relay 41 is responsive to current only. Use of hydraulic servomotors in place of electric servomotors is referred to. Mathematical analysis for optimum operating conditions is given.
Patent GB-809828-A (GB)
Title: An improved liquid level contents gauge
Inventor: VARGA OTTO HERMAN
IPC: G01F23/02
Filed: 1955-08-31
Abstract: 809,828. Gauge glasses. SEETRU Ltd. Sept. 6, 1956 [Aug. 31, 1955], No. 25009/55. Class 123(1) In a gauge glass for indicating the level of liquid in a storage tank wherein one or each end of the glass is mounted in an upright socket extending radially from a narrow collar which engages over a nipple secured into the tank, for example, as described. in Specification 670,041, the nipple incorporates a valve by means of which the communication from the tank to the glass can be closed off to allow the glass to be removed for cleaning &c. The nipple 7 is screwed into a boss 9 mounted in the tank wall 6 and has an external collar 10 against which the collar 5 of the gauge glass 1 is held by a retaining nut 16, the nipple having an internal bore 12 from which apertures 13 communicate with the interior of the glass. Within the bore 12 is mounted a valve plunger 20 having a seating ring 21 which, in the closed position of the plunger, position A, engages a seating 22 formed within the bore to shut off the interior of the tank from the glass. In the open position, position B, of the valve the interior of the tank is in free communication with the glass. A sealing ring 23 prevents leakage of liquid through the nipple. When the gauge is used on a pressurized tank combined nipple and valve devices are fitted at both ends of the glass.
Patent GB-277988-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q3/00
Filed: 1927-09-22
Abstract: 277,988. Associated Telephone & Telegraph Co., (Assignees of Tharp, V. S.). Sept. 22, 1926, [Convention date]. Automatic and semiautomatic systems; party - line systems; metering.-In a system including party lines, a dead number call is routed to an operator over a circuit TC through the agency of a relay such as 32 or 32<1> which is responsive to ringing current of the frequency allotted to that number. Earth and battery in turn are connected to both speaking wires 71, 74 to ensure the operation of the ring-cut-off relay 4 or 4<1>, while preventing the operation of the back-bridge relay 2 or 2<1> which controls metering. Assuming the substation A<3> on the party line 21, 22 to be out of service, the line is connected at the distributing frame DF to apparatus TR, in which the relay 32 is connected up in the same way as the bell at substation A<3> and responds to the same frequency of current. The connector FS receives an extra digit for selecting the ringing current to be transmitted. Relay 32 on operation connects up switching relay 31 which locks in series with relay 52, and the latter marks the circuit TC busy. Relays 54, 53 energize and lamp L is lighted. When the operator plugs in, sleeve relay 51 energizes, disconnects relay 52 and connects earth to the midpoint of the bridged impedance 56, without effect in this case. Relay 54 is disconnected, and in the interval between the relapse of relays 54, 53 battery is connected to the mid-point of the bridge, and effects the energization of ring-cut-off relay 4, which locks and switches in back-bridge relay 2. The latter cannot operate however since its upper winding is short-circuited, and the current through its lower winding is insufficient. When relay 53 relapses, the current over the bridge is still insufficient to operate relay 2. Switching relay 55 now energizes and completes the talking circuit between the operator and the calling subscriber. The connection of earth to the mid-point of the bridged impedance 56 serves to operate the ring-cut-off relay 4<1> of a connector C giving access to non-party-line subscribers, the winding of which is connected to battery.
Patent GB-327661-A (GB)
Title: Improvements in and relating to devices for mixing beverages
IPC: A47J43/27
Filed: 1929-08-16
Abstract: 327,661. Casani, S. Aug. 16, 1929. Mixers shaken in the hand. - A cocktail shaker comprises a body portion 9 having a compartment 10 for ice &c. closed by a member 11, a closure member 1 with a separate cap 2, and a strainer 8 all readily detachable for cleansing. A pouring aperture 7 closed bv a plate -3 is provided in the cap, and the compartment 10 may be formed on the base member 11.
Patent GB-636145-A (GB)
Title: Stabilizers for photographic silver-halide emulsions
IPC: G03C1/34
Filed: 1947-09-12
Abstract: Compounds of the general formula <FORM:0636145/IV (b)/1> wherein R is a carbalkoxy group, R1 is an alkyl, aryl, or heterocyclic group, R2 is H or an alkyl, aryl, or aralkyl group, and Y is OH, are prepared by condensing a b -keto ester with a 3-amino-5-carbalkoxy-1 : 2 : 4-triazole.  7 - Hydroxy - 5 - methyl - 2 - carbethoxy-1 : 3 : 4-triazaindolizine is prepared by refluxing together 3-amino-5-carbethoxy-1 : 2 : 4-triazole and ethyl acetoacetate in glacial acetic acid.  The 5-phenyl, 5-methyl-6-propyl, and 5-b -pyridyl-derivatives, and 7-hydroxy-5-ethyl-2-carbmethoxy-1 : 3 : 4-triazaindolizine are similarly prepared.  Compounds of the general formula wherein R is a carbalkoxy group and Y is NH2 are prepared by condensing a b -iminonitrile with a 3 - amino - 5 - carbalkoxy - 1 : 2 : 4 - triazole. Compounds referred to are the 5-methyl, 5-phenyl, and 5-b -pyridyl derivatives of 7-amino - 2 - carbethoxy - 1 : 3 : 4 - triazaindolizine.  Compounds of the general formula wherein R is a carboxy group and Y is OH or NH2 are prepared by hydrolysing the corresponding compounds wherein R is a carbalkoxy group.  7 - Hydroxy - 5 - methyl - 2 - carboxy - 1 : 3 - 4-triazaindolizine is prepared by refluxing 7-hydroxy - 5 - methyl - 2 - carbethoxy - 1 : 3 : 4-triazaindolizine with aqueous NaOH and acidifying.  7 - Hydroxy - 5 - phenyl - 2 - carboxy-1 : 3 : 4 - triazaindolizine and 7 - amino - 5-methyl - 2 - carboxy - 1 : 3 : 4 - triazaindolizine are similarly prepared.  Specification 628,994 is referred to.
Patent GB-387273-A (GB)
Title: A new or improved step mat especially applicable for motor vehicles
IPC: B60R3/04
Filed: 1932-09-09
Abstract: 387,273. Boot-cleaning devices. STEINMETZ, S., 3, Iranyi Daniel Utca, Kispest, Hungary. Sept. 9, 1932, No. 25163. [Class 138 (i).] A step-mat for motor vehicles comprises a plate 11 slotted to receive detachable brushes 20 and provided with feet resting on the running board A, so that a space is formed between the plate and the board, Recesses are formed in the downwardly-turned sides of the plate and apertures 26, 27 are provided in its upper surface, so that air currents are produced due to the velocity of the vehicle and serve to remove the dirt. The brushes 20 are formed by bristles held between twisted wires and have flat under surfaces to prevent accidental rotation in lugs depending from the plate 11. The upper surfaces of the brushes extend above the plate. The plate is secured to the running board by lugs 29, 30 and screws, the lug 30 being forked so that the mat may be turned into the position shown in dotted lines. The ribs 16 between the brushes may have bead or rib projections for the removal of rough dirt.
Patent GB-205304-A (GB)
Title: Improvements in the manufacture and production of vat dyestuffs
IPC: C09B3/30
Filed: 1922-09-18
Abstract: Green vat dyestuffs are obtained by alkylating and halogenating the oxidized dibenzanthrone compound, or its reduction or condensation products, described in Specification 14498/12.  According to examples:-the product described in example 3 of Specification 14498/12 is methylated by means of methyl-p-toluenesulphonate or dimethyl sulphate in nitrobenzene, and then brominated in sulphuric acid, or chlorinated by means of sulphuryl chloride in nitrobenzene or by passing chlorine over the dry product; the brominated dyestuff described in example 1 of Specification 12818/13 is methylated by means of methyl-p-toluenesulphonate.  Specifications 181,304 and 193,431 are referred to.
Patent GB-1457618-A (GB)
Title: Graphite electride
IPC: H05B7/12
Filed: 1974-06-07
Abstract: 1457618 Electric arc electrodes C CONRADTY 7 June 1974 [16 June 1973] 25338/74 Heading H5H A section of an arc furnace graphite electrode provided with a screw-threaded socket to make a nipple connection to an adjacent section has an oxidation resistant protective coating with a higher specific conductance than carbon that covers the whole surface of the section apart from the screw threaded socket. It is stated that the current flowing through the nipple interconnection is thereby reduced and does not damage the nipple and socket. The coating, which has a specific resistance between 0À07 and 0À10 #/mm.<SP>2</SP>/m., is made of aluminium with minor amounts of oxides and carbides. It becomes plastic under operating conditions improving electrical contact at the joints.
Patent GB-481805-A (GB)
Title: Improvements in the manufacture of sintered hard metallic alloys
IPC: C22C1/05
Filed: 1936-09-17
Abstract: In a process for making sintered hard alloys of the kind in which in one or more carbides in finely divided form are mixed with a compound of a bonding metal which is subsequently reduced by heating in a reducing atmosphere, the carbide or mixture of carbides is first prepared in the particle size required in the finished alloy and admixture thereof with an oxide of the bonding metal is effected by prolonged treatment for 50 hours or more in a rotating barrel or similar mixer so that an even smearing of the oxide over the surface of the carbide particles is produced without substantial reduction of their particle size.  A mixture of different carbides of different grain size, or a mixture of different samples of the same carbide having varying grain sizes may be employed.  The reduction may be effected in an electrically heated tube furnace at 600-1100 DEG  C. Specification 383,327 is referred to.
Patent GB-988296-A (GB)
Title: Improvements in or relating to the construction of refrigerator cabinets
IPC: F25D23/06
Filed: 1963-06-26
Abstract: 988,296. Refrigerators. G. F. STAPLES, and J. SHIRLEY. June 26, 1963, No. 25362/63. Heading F4H. A refrigerator cabinet is assembled by bolting together separate side, top, bottom and back units 1 to 5 each consisting of a sheet metal outer panel formed into a shallow tray by turning each edge through two 90 degrees bends 21, 22 and to which an inner plastic sheet e.g. 9 to 12 having rounded concave 18, 19 or convex 15, 16 edges, is bonded by an adhering, rigid setting, insulating, plastic foam, e.g. polyurethane, which fills the space between the two sheets. Outer flanges 24, 25 of the metal panels engage with the plastic sheets at the start of the edge radius bends so as to leave the bent edges 15, 16, 18, 19 unbonded and flexible. Bolting the units together forces the bent edges of adjacent plastic sheets together and these joints are then sealed with a suitable plastic adhesive or by welding. The corners of metal and plastic sheets are notched to prevent overlapping during bending and assembly. In the front edges of all metal panels except the back triple folds 23 are formed to contain the unformed front edges of the plastic panels 8 to 11.
Patent GB-600109-A (GB)
Title: Improvements in and relating to asbestos products and method of preparation
IPC: H01B3/06
Filed: 1945-10-01
Abstract: The tensile strength of a dielectric material consisting essentially of asbestos, and which may contain a minor proportion of a colloidal clay, such as bentonite, is increased by impregnating the material with an aqueous solution of a chloride of an alkaline earth metal or of zinc, aluminium or tin, drying the impregnated material and exposing it to the action of an alkaline solution comprising ammonia or an amine to convert the chloride to hydroxide in the body of the dielectric material, drying the dielectric material, and subjecting it to an elevated temperature to convert the hydroxide to oxide in situ.  The concentration of the aqueous solution of the chloride may vary from 5 per cent to saturation and the conversion of hydroxide to oxide may be accomplished at about 175 degrees C.  Specification 600,110 is referred to.
Patent GB-1018414-A (GB)
Title: Improvements in or relating to methods of recovering the central portions of gramophone records
IPC: C08J11/06
Filed: 1963-06-26
Abstract: In a method of recovering the central portions of gramophone records comprising plastic material provided with paper labels the central portions covered with paper labels are pulverized, the resulting ground material is mixed with an organic material which is miscible with the record material and able to impregnate the paper present in the ground material and the mixture obtain is gelatinized by heating, filtered and after cooling is reduced to a granular state. The plastic may be a vinyl chloride/vinyl acetate copolymer, polyvinyl chloride or polyethylene. The organic material may be pitch or a thermoplastic resin, e.g. polyethylene or polyvinyl chloride.  The product may be used in the manufacture of electrical components and lower quality gramophone records.
Patent GB-995588-A (GB)
Title: Improvements in or relating to the formation of continuous filamentary tows
Inventor: SARGEANT ARTHUR HENRY
IPC: D01D10/04
Filed: 1963-06-27
Abstract: 995,588. Artificial filamentary tows. BRITISH NYLON SPINNERS Ltd. May 4, 1964 [June 27, 1963], No. 25565/63. Heading B5B. Apparatus for forwarding compacting tow comprises two coacting pressure rollers, the surfaces of which present differential characteristics to the tow passing between them, such that the tow preferentially maintains contact with the periphery of one of said rollers on emergence from the nip thereof. The differential characteristic may be a difference in peripheral speed, obtained either by rotating two rollers of equal diameter at speeds differing by e.g. 2-12%, or by using two rollers of different diameters rotating at the same speed. The differential characteristic may also be a difference in temperature, or a difference in surface roughness or resilience, obtained by e.g. etching one of a pair of chromium-plated rollers, or covering one roller with neoprene or nitrile rubber. In one embodiment, a tow of e.g. freshly-extruded continuous polyamide filaments is passed between the nip of chromiumplated roller 1 and neoprene or nitrile rubbercoated roller 3. The tow emerges from the nip in contact with the lower peripheral surface of roller 1 in the form of a lightly-compacted tape or ribbon, from which it is removed by edge 9 of pivotally-mounted deflector plate 5. The invention is stated to be an improvement on that disclosed in Specification 742,393.
Patent GB-366080-A (GB)
Title: Electric batteries
IPC: H01M12/06
Filed: 1930-08-27
Abstract: 366,080. Galvanic batteries. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (National Carbon Co., Inc. ; 30, East 42nd Street, New York, U.S.A.) Aug. 27, 1930, No. 25606. [Class 53.] A primary cell in which atmospheric oxygen is the depolarizer comprises carbon and zinc electrodes 11, 12 which are surrounded by a solid block of electrolyte material 37 which dissolves when water is added to the cell. The upper end of the carbon electrode 11 projects into the atmosphere and the whole electrode is impregnated with a substance which renders it impermeable to the electrolyte. This may be done by adding to the electrode mixture a small quantity of paraffin, petroleum jelly, mineral oil, or a fatty acid such as stearic acid. The electrode may also be immersed in a solution of petroleum jelly, heavy cylinder oil, and stearic acid in benzine or other solvent. A rubber solution with or without oil may also be used. The electrode itself may be made by mixing amorphous carbon with a binder such as glucose and baking the moulded mixture under sand or coke dust. Connection to the carbon electrode is made by making a hole in the electrode, spraying the interior with metal, inserting a wire and packing the hole with an amalgam. The Figure shows a battery of two cells before water has been added to dissolve the electrolyte. The zinc electrodes 12 are supported in grooves in opposite sides of the container, and the carbon electrode 11 rests on a rod 15 also supported in grooves in the container. The block 37 of electrolyte is cast round the electrodes in a mould which rests on a shoulder 17 on the container. The electrolyte consists of caustic soda and a quantity of water not greater than 45 per cent of the weight of the caustic soda. The mixture on cooling sets into a solid mass. The cell is closed by a cover 22 which has a filling opening and vent cap 24. The filling opening may be hermetically sealed by means of a diaphragm 25 which is of the same material as the container and is sufficiently thin to be broken when the cell is to be filled. In order to indicate when the correct amount of water has been added a projecting arm may be provided in each cell at the required level of the electrolyte. A cover 35 may be provided for the carbon electrode to prevent accidental contact with water. Openings 36 may be provided in the cover to permit air to circulate round the top of the electrode. Before the battery is sealed a quantity of lime, bentonite, or artificial zeolites, &c. is introduced to form an insoluble precipitate with the zinc which goes into solution, thus reducing the zinc concentration in the electrolyte. The container may be of rubber, iron, nickel, or other material. Specification 366,101 is referred to.
Patent GB-534695-A (GB)
Title: Improvements in and relating to indicating instruments
IPC: G01L19/08
Filed: 1939-09-13
Abstract: 534,695. Indicating instrument. BENDIX AVIATION CORPORATION. Sept. 13, 1939, No. 25684. Convention date, Sept. 13, 1938. [Class 106 (iv)] A front closure for instruments of the pressure-responsive type comprises a rear retaining element 20 around the casing 10, a front retaining element 23 with an inwardly directed flange 24, a cover glass 17, means between the cover glass and a support surface 11 within the casing for resiliently supporting the cover glass, and means connecting the retaining elements so that the cover glass is maintained pressure-tight against the casing. A split resilient ring 12 is expanded into a groove in the casing 10 and supports a solid bevel ring 13. Above this ring is a sealing ring 13a of rubber &c. and above the sealing ring is a transparent ring 14 forming a window from which light from a source 30 at the side is projected on the dial 15. A ring-shaped bezel 16 of rubber abuts against the ring 14 and carries the coverglass 17. Surrounding the transparent ring 14 and separated therefrom by a circular shield 18 is a light conducting and emitting member 19. A ring 20 flanged to engage a shoulder 22 on the casing surrounds the latter and clamped thereto by screws 25 is a flanged ring 23 whose flange 24 engages the cover glass and clamps the various sealing rings together, the member 19 being located outside the sealed volume. A boss 26 is formed on ring 23 to receive a lamp assembly 27 screwed therein. The bulb of the lamp projects into a member 33 located between the ends of the split ring 31. In a modification the transparent member is in the form of a ring-shaped window member having at its outer circumference two surfaces, an upper surface adjacent the cover glass and which is transparent, and a lower surface which is covered with light - absorbing material, which in turn is covered with light-reflecting material. The front face of the transparent member is bevelled to direct the light rays from the exterior of said member on to the dial and the rear face is bevelled and coated with lightabsorbing material which in turn is coated with light-reflecting material. Specifications 482,595 and 523,085 are referred to.
Patent GB-912623-A (GB)
Title: Regeneration of spent caustic
IPC: C10G19/08
Filed: 1959-07-27
Abstract: Caustic employed in the removal of organic impurities from hydrocarbon oils is at least partially regenerated by foaming the spent <PICT:0912623/III/1> caustic to form distinct foam and liquid layers in which the organic impurities are concentrated in the foam layer, the foam and liquid layers being thereafter separated.  The caustic may be a solution of an alkali metal, preferably sodium or potassium hydroxide, carbonate or other salt having basic properties in solution and having a concentration of 0,1-5% at and containing no more than 1,0% wt. of impurities.  Foaming may be carried out by the use of gases or vapours, e.g. CO2, air, N2, NH3, hydrocarbon gases or steam, or by the use of mechanical agitation, or by opposing jets of caustic.  Gases which react with the organic impurities, particularly with the sulphur compounds may also be employed to produce foaming, the reacted impurities being removed in the foam layer together with unreacted impurities.  Temperatures during foaming may be 40 DEG -150 DEG F. preferably 70 DEG -80 DEG F. with gas velocities to cause foaming of 1-50 ft./sec.  The process may be used in conjunction with known regeneration processes, e.g. carbonation and hydrolysis, of the caustic to form carbonate solution in which the organic impurities, such as phenols and acid oils, are insoluble, particularly as a final clean-up step.  A hydrocarbon oil stream 55, e.g. crude oil or oil distillate from petroleum refining, is washed with caustic stream 56 in vessel 50.  Sweetened oil is removed through line 57 whilst contaminated caustic, containing phenols, naphthols, and naphthenic acids, is fed into carbonation unit 51 by line 58, where it is converted at say 100 DEG -150 DEG F. into Na2CO3 solution by CO2 gases entering under pressure below 10 p.s.i.g. through line 59. Residual gases are vented at 60.  Organic impurities precipitate in settler 52 and are removed at 61.  Carbonate solution containing soluble impurities is passed to tower 53 where it is foamed by flue gas introduced through line 64 and distributer 65.  Impurity-rich foam is led off at 66 to coalescing zone 67, where the foam is collapsed by standing, mechanical action, increased temperature, or electrical means.  Purified carbonate solution is passed through 71 to hydrolyser 54 where it is hydrolysed by steaming at 400 DEG -510 DEG C. and 250-1400 p.s.i.g. to form NaOH by steam entering at 72. Caustic together with make-up introduced at 75 is returned through 74, 70, and 56 to vessel 50 for further use.  To improve stability of the foam in tower 53, foam stabilizing agents, e.g. detergents or surface active dyes, may be added.