baber/WOPTO huggingface dataset:
Patent GB-627548-A (GB)
Title: Improvements in and relating to electric supply systems employing storage batteries
IPC: H02J7/32
Filed: 1945-01-19
Abstract: 627,548. Regulating systems for standby batteries. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 19, 1945, No. 1605. Convention date, Jan. 21, 1944. [Class 38 (iv)] A system for controlling the charging and discharging of a standby battery 4 associated with a load 1 normally supplied from a main D.C. source 2 comprises a reversible booster 5 driven by a shunt motor 6 and excited by an amplidyne machine 20 having a number of field windings energized in dependence upon conditions in the main supply, battery and load circuits in such a manner as to ensure proper charging of the battery whilst providing against undue variation of load voltage and excessive discharge current from the battery upon failure of the main source. The main excitation for machine 20 is provided by field winding VRF which, under conditions of excessive battery current (charge or discharge) or high battery volts, is opposed by winding CLF, or VLF, respectively. Under normal conditions, with the source 2 supplying the load, switch 8 is 'closed and normal voltage relay NVR, line relay LR, control relay CR and line switch 10 are energized, so that the field VRF is energized by the voltage difference between the load voltage and the voltage drop across the points 28, 32 of a potentiometer shunting a constant voltage generator 31, resulting in the machine 5 boosting the voltage of source 2 to maintain a satisfactory charging current. At a predetermined battery voltage, which varies according to the setting of contact 37 of a potentiometer across the battery, a rectifier 38, biassed from the potentiometer across the generator 31, conducts. Winding VLF is thus energized, thereby reducing the boost of machine 5 and decreasing the charging current. Upon failure of source 2, reverse current relay RC opens its contacts 15, whereupon relays LR, CR and line switch 10 are deenergized to disconnect source 2 and reverse or reduce the excitation of winding VRF, as determined by the tapping 41 on resistance RHCL which is now effective through closure of contacts 40 of relay CR. When the charging or discharge current exceeds a preset value, it produces across a resistor 33 a voltage drop which overcomes the bias on one or other of rectifiers 35, 44 (according as to whether the current is a charging or discharging one) which is derived from tappings 34, 43 on the potentiometer shunting machine 31. Winding CLF is then energized over the rectifier and reduces the excitation of machine 20 to decrease the battery current. An anti-hunting field winding AHF, fed through a capacitor 24, is also provided on machine 20.
Patent GB-1424183-A (GB)
Title: Support-material
IPC: B01J31/30
Filed: 1972-01-25
Abstract: 1424183 Diaminotoluene UNILEVER Ltd 23 Jan 1973 [25 Jan 1972] 1737/75 Divided out of 1422774 Heading C2C [Also in Divisions B1 and C3] Example C113 describes the hydrogenation of dinitrotoluene to the corresponding diamine using a palladium catalyst supported on an anion exchange resin which is a styrene/divinyl benzene copolymer containing tertiary amino and quaternary ammonium groups and which has been treated with aqueous NaOH to increase the percentage of active sites readily accessible to large molecules by at least 10%. The reaction medium is a mixture of oxalic acid, water and ethanol.
Patent GB-474332-A (GB)
Title: Improvements in and relating to steam heating
IPC: F24D1/00
Filed: 1937-01-20
Abstract: 474,332. Heating by circulation of fluids. UHDE, F. Jan. 20, 1937, No. 1755. Convention date, Jan. 20, 1936. [Class 64 (ii)] In a method of heating by circulation of steam in a. temperature range above the saturation temperature, steam is forced by a rotary pump 3 through a superheater 1 from which it passes through a heat-exchanger 5 to heat a chemical apparatus 6. To compensate for loss of steam or to increase the pressure in the system, superheated steam is passed through a valve 8 into a water reservoir 7, from which fresh steam passes into the cycle. The valve 8 or the furnace 4 may be controlled by the pressure in the steam cycle, or the temperature of the heated apparatus, through the relay 9 which is actuated by a thermostat.
Patent GB-1412327-A (GB)
Title: Process for the utilisation of thermal energy
IPC: C01B15/043
Filed: 1973-01-12
Abstract: 1412327 Decomposing steam using potassium ; potassium oxide; potassium peroxide GAZ DE FRANCE 12 Jan 1973 [13 Jan 1972] 1816/73 Heading C1A At least part of the thermal energy available from a high temperature heat source is utilized in a reaction cycle in which potassium, K, is reacted with water vapour to give gaseous hydrogen, which is separated and recovered, and solid or liquid potassium oxide (K 2 O) which is then thermally dissociated into its components, viz oxygen which is separated and recovered and potassium which is recycled. The preferred heat source is a nuclear pile or reactor. The reaction between water vapour and potassium may be carried out at a temperature of 500‹ C. The thermal dissociation of the potassium oxide is effected by melting the oxide so as to cause its disporoportionation into potassium vapour and liquid potassium peroxide, which is then reacted with molten lead to give molten litharge PbO which is separated and potassium vapour which is recycled, the molten litharge being vapourized under reduced pressure to give molten lead which is recycled and oxygen which is recovered. The disproportionation of K 2 O may be carried out at normal pressure and a temperature of 1270‹ C., if a lower pressure is used, the required temperature is lower. The reaction between lead and potassium peroxide may be carried out at normal pressure and a temperature of 1130‹ C. The decomposition of lead oxide is preferably carried out at a pressure of 0À005 bars. The potassium vapour produced in the reaction cycle may be used as a heat carrier, being used in a heat exchanger to produce steam for the process and for operating a conventional steam turbine.
Patent GB-283907-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q3/00
Filed: 1927-08-11
Abstract: 283,907. Associated Telephone & Telegraph Co., (Assignees of Wicks, J.). Aug. 26, 1926, [Convention date]. Drawings to Specification. Automatic exchange party line systems.-The driving magnets of selectors are supplied with current for numerical operation over both talking wires in series and a bridge at a preceding selector. The invention is described in its application to group selectors, and simple, rotary and party-line connectors, with reference to a system which is identical with that described in Specification 276,656, the driving magnet of a selector receiving current over the loop as soon as the selector is seized, this current being increased to operate the magnet by short-circuiting a resistance at the preceding selector.
Patent GB-1199511-A (GB)
Title: Improvements in and relating to Warp-Knitted Textiles.
Inventor: MCCOY ROBERT GRIMSHAW
IPC: D04B21/00
Filed: 1968-01-12
Abstract: 1,199,511. Knitting. R. G. McCOY. 2 Dec., 1968 [12 Jan., 1968], No. 1839/68. Heading D1K. A warp knitted fabric has laid-in warp yarns held in the fabric by the loop structure of two sets of threads forming the ground fabric. The fabric is produced on a machine having at least three guide bars in which two guide bars feed the ground threads and the other the laid in warp yarns. Alternatively the machine may have four guide bars for feeding or laying additional yarns. The lapping motions may vary from single needle spacing to a number of needles and the motion of the laying guides may be in the same direction as the ground guides.
Patent GB-951188-A (GB)
Title: Reducing corrosion in central heating systems which utilise the circulation of a hot liquid
Inventor: ORDELT HERMANN EMIL FERDINAND
IPC: C23F11/08
Filed: 1963-01-16
Abstract: A corrosion-inhibited anti-freezing agent, suitable for dilution with water to give a fluid for use in a central heating system which utilizes the circulation of a hot liquid, consists essentially of (a) 2 to 10% by weight of an alkali metal borate or phosphate, (b) 0.4 to 1.6% by weight of an alkali metal silicate, and (c) 0.05 to 0.5% by weight of a vapour phase inhibitor, the balance being a glycol. Component (a) may be borax, component (b) sodium silicate and component (c) morpholine or dicyclohexylammonium nitrite.  The preferred glycol is ethylene glycol.ALSO:A corrosion-inhibited anti-freezing agent suitable for dilution with water to give a fluid for use in a central heating system which uses the circulation of a hot liquid consists essentially of (a) 2-10% by weight of an alkali metal borate or phosphate, (b) 0.4-1.6% by weight of an alkali metal silicate, and (c) 0.05-0.5% by weight of a vapour phase inhibitor, the balance being a glycol.  Component (a) may be borax, component (b) sodium silicate and component (c) morpholine or dicyclohexylammonium nitrite.  The glycol may be ethylene glycol.
Patent GB-587870-A (GB)
Title: Improvements in or relating to furnaces for the heating of solid metals
IPC: C04B35/16
Filed: 1945-01-24
Abstract: Some or all of the substantially horizontal surfaces of furnaces for heating (not melting) metals, particularly ferrous metals, or of chambers or ducts subject to high temperatures and to the action of hot gases, e.g., regeneration systems and dust collectors are covered with a protective layer of unbonded material rich in magnesian olivine.  The layer, which is preferably at least 1-4 inches thick, may consist of pieces of the size of 1 x 2 x 2 inches, together with smaller particles, of dunite, peridotite, or a fused product rich in forsterite, e.g., containing 80-90 per cent. of forsterite.  The surface to be protected may be formed of magnesite, chromite, chrome-magnesite, forsterite or olivine.
Patent GB-246661-A (GB)
Title: Improvements in or relating to the duplication of printing surfaces, sign plates andthe like by etching
IPC: B41C1/06
Filed: 1925-01-23
Abstract: 246,661. Baker, J. Jan. 23, 1925. Etching transfering designs; transfers.-In a process for duplicating printing - surfaces, sign plates, &c. by etching, the resist is applied to the plate to be etched by a series of transfer impressions taken from the original in a resist ink. By superposing a number of impressions, the etching may be carried out without further strengthening of the resist. The etching may be performed in stages, one or more transfers being applied before each stage, and the transfers after the first etching may have their inked portions spread beyond the boundaries of a normally prepared transfer so that the characters are produced with widened bases. The transfer paper 3, Figs. 3 and 6, is stretched on a frame 4 provided with holes 5 adapted to register with pins 6 on the chase 1 containing the original, and also with pins 9, Fig. 4, on a board 8 on which the plate 11 to be etched is mounted. The plate 11 is provided with holes to engage pins 10 on the board 8 so that the plate can be accurately positioned between each etching operation. The holes 5 and pins 6 are located at opposite corners of the frame and chase respectively so that by positioning the original to one side of the chase and turning the frame through an angle of 180‹, two impressions may be taken on a single transfer sheet. By employing a square frame, four impressions may be taken on a single sheet. The inner portions 12 of the pins 6 are of a reduced diameter so that, by engaging the holes 5 with these portions of the pine, a limited lateral movement of the frame over the chase mav be obtained. In operation, an impression is taken on a sheet 3 by engaging the holes 5 with the larger portions of the pins 6 and the impression transferred to the plate 11. This operation is repeated until the resist on the plane 11 is of the desired thickness and the plate is then etched in the usual way. If characters with widened bases are desired, the plate is etched after receiving one or more transfers as described above. The plate is then replaced on the board 8 to receive further transfers prior to a second etching operation. These transfers are prepared with widened inked portions by engaging the frame 4 with the portions 12 of the pins 6 and moving the frame laterally to smear the paper 3 over the inked original, or by applying excess ink to the original, taking a normal transfer, dusting the impression with resin and applying pressure by means of a wad or wool or other suitable material. The transferring and etching operations may be repeated, the inked portions of the transfers being progressively widened by replacing the pins 6 by others having reduced portions 12 of progressively smaller diameter. Characters with widened bases can also be prepared by employing transfers with inked portions of progressively reduced width, the ink being removed from the plate after each etching operation.
Patent GB-803557-A (GB)
Title: Improvements in or relating to polymeric materials comprising low pressure polyolefines
Inventor: HAWARD ROBERT NOBBS
IPC: H04L17/24
Filed: 1956-01-20
Abstract: A composition comprises a major proportion of a polymer of an olefin containing up to ten carbon atoms in the molecule prepared by the low pressure process and a minor proportion of an organic phosphite of formula <FORM:0803557/IV (a)/1> where R1 and R11 are the same or different hydrocarbon radicals which may be substituted or unsubstituted alkyl, aryl, cycloalkyl, alkaryl, or aralkyl radicals. Specified polymers are polyethylene and polypropylene while specified phosphites are tri-hexyl, tri-(2-ethyl-hexyl), trilauryl, tri-octyl, tri-(p-isopropylphenyl), tri-(p - tertiary - butylphenyl), di - (p - tertiary - butylphenyl monophenyl, tri-(n-octyl), tri-(n-nonyl), tri-(nonyl-phenyl), tristearyl and tricyclohexyl, phosphites.  It is preferred that the phosphite is present in from 0.06 to 0.6 per cent based on the polymer, while known stabilizers and/or anti-oxidants, e.g. cadmium and calcium stearates, polymeric glycidyl polyethers and alkyl tin esters may also be present.  The polymer may be milled at 100 DEG  to 200 DEG  C. with up to 1 per cent of the phosphite.
Patent GB-436623-A (GB)
Title: Improvements in and relating to sew-on buttons
IPC: A44B1/24
Filed: 1935-01-22
Abstract: 436,623. Buttons. UNITED - CARR FASTENER CORPORATION, 31, Ames Street, Cambridge, Massachusetts, U.S.A.- (Assignees of Johnson, G. ; 16, Burwell Road, West Roxbury, Massachusetts, U.S.A.) Jan. 22, 1935, No. 2113. Convention date, Jan. 29, 1934. [Class 43] A sew-on button having a one-piece boss 4 extending from a metallic back plate 3 has a thread receiving aperture 5 which is formed by pressing out portions of the boss, the pressedout portions being overlapped to form a smooth continuous wall 6, Fig. 4. The hollow metal cap 1 may be impressed with a design presenting the appearance of worm strips.
Patent GB-509897-A (GB)
Title: Improvements in or relating to soldering and the like operations
IPC: B23K1/20
Filed: 1938-01-22
Abstract: 509,897. Soldering plates for gas meters &c. WILSON GAS METERS, Ltd., G., WILSON, J. H., and WILSON, W. D. Jan. 22, 1938, No. 2160. [Classes 83 (ii) and 83 (iv)] In soldering the edge of a thin metal plate to the flat surface of another metal plate, e.g., in the manufacture of gas rreters, the surface a is pressed, stamped, rolled or otherwise bent to form a shallow channel a<1> to receive the edge b of the other plate b and solder is applied which finds its way into and flows along the channel as at c. The channel further acts as a locating means for the edge and serves to stiffen the member.
Patent GB-1380657-A (GB)
Title: Stabilization of prepare voltage of transmission storage target
IPC: H01J31/18
Filed: 1973-01-16
Abstract: 1380657 Cathode ray storage and display tubes TEKTRONIX Inc 16 Jan 1973 [24 Jan 1972] 2211/73 Heading H1D A method of operation of a transmission storage tube having a transmission mesh storage target 12 including mesh with dielectric layer thereon, comprises bombarding the dielectric uniformly with low velocity flood electrons(e.g. via flood guns 44), to charge the surface to a prepare voltage for writing; applying a plurality of stabilization pulses 96 (Figs. 2, 3B, not shown) between the target electrode and flood electron cathode, these pulses having a peak voltage greater than the first cross-over voltage so that secondary emission is >1, the quiescent voltage being less than the cross-over voltage, the pulses causing the dielectric to charge positively during the pulses and negatively between pulses until the prepare voltage is stabilized to a value positive w.r.t. flood electron cathode and below the first cross-over voltage 76 (Fig. 2, not shown); and bombarding the stabilized dielectric with high velocity writing electrons having energies > the first cross-over voltage to write a positive charge image and thereby enabling more flood electrons to be transmitted through the written areas of the target. The pulse frequency may be greater at the start, and voltages to terminals 60, 64, 68 are (58), (62) and (66) (Fig. 2) respectively. Charge may be written first on a fast writing speed target, then transferred to a long storage time target. The method overcomes effects due to residual charges remaining after erasure, voltage variations due to target non-uniformities and charge redistributions, and positive ion bombardment. Fig. 1, includes further storage target 14, phosphor screen 22, Al electrode 24, collimators 48, 52, 54 (e.g. Ag), collector mesh 56 for secondaries from both targets and ceramic funnel 20. Dielectric 40 may be 20 to 30Á thick porous insulator of MgO of #5% bulk density, dielectric 72 may be thin dense MgO (e.g. vapour deposited) and electrode 42 may be electroformed Ni mesh, 250 lines/inch. Operational sequences are discussed w.u.t., Figs. 2 and 3B (not shown), including transfer to the second target. Pulses parameters are given, and the tube may have only one storage target.
Patent GB-593736-A (GB)
Title: Accumulator pressure propeller blade actuating mechanism
IPC: B64C11/42
Filed: 1944-02-07
Abstract: 593,736. Fluid-pressure servomotorcontrol systems. HOOVER, W. S. Feb. 7, 1944, No. 2219. [Class 135] [Also in Groups XXVI and XXXIII] A pitch adjusting mechanism for an air screw comprises a pump 37 as described in. Specification 567,710 that draws fluid from the space 24 through port 34 and delivers through port 39 to an accumulator comprising a piston 40 loaded by a spring 41. When the pressure fully depresses the piston 40, a rod 42 carried by the piston closes the suction port 34 at 43 and allows the pump to run idly. The pump is slidable axially under the influence of the centrifugal governor 50 and is shaped to act as a control valve to connect the accumulator and its own pressure space to either ports 60, 61 connected to rotary vane power devices attached to the roots of the blades 7 ; the blades are interconnected by gearing to maintain synchronism. The space 24 may be filled with fluid through the plug hole 23 or may be supplied from the engine pump 30 through ports 32, 28, 27 and tube 25 within the shaft 13. The governor spring is enclosed in an abutment casing 48a that is adjustable by the rotation of an inclined cam ring 49a that is geared with teeth on a lever 49b. The lever 49b is connected to lever 50<1> which, when moved to its extreme positions for feathering &c., also makes contacts 52, 53 to energize a motor 51 geared to the outer casing of the pump. Specifications 557,906, [Group XXXIII], and 563,008 also are referred to.
Patent GB-670902-A (GB)
Title: Concentration of aqueus solutions of salts of alkylated aromatic sulphonic acids
IPC: C07C309/31
Filed: 1950-01-27
Abstract: Aqueous solutions of inorganic salts of alkylated aromatic sulphonic acids are concentrated and freed from inorganic salts by salting out with common salt and separating the two layers thus formed; the initial solution must not contain more than 10 per cent of sulphonate (preferably 6-7 per cent) and must therefore be diluted to this point if necessary, or else a sufficiently dilute alkali must be used in the neutralization step.  The upper layer which contains the sulphonate is then further concentrated by filtration or centrifugation to give a pasty product containing 50-60 per cent or ore of mactive material.  The optimum temperature for salting out is 10-25 DEG  C.  The amount of salt added is preferably sufficient to give a saturated solution, and part of this may be supplied in the form of the separated lower layer from a previous salting-out operation.  This latter method also serves to supply the water necessary for diluting the sulphonate solution to 10 per cent concentration or less, and in this way the process can be operated continuously.  An example is given of the concentration of a sodium alkyl-benzene sulphonate solution.  The method is stated to be applicable to alkali metal, ammonium and magnesium salts.
Patent GB-722666-A (GB)
Title: Lenticulated film and a method for sensitizing it
IPC: G03C7/14
Filed: 1953-01-26
Abstract: Fungicidal and insecticidal compositions comprise aqueous emulsions of 1 - (2 - phenyl - 2 - vinyloxyethyl) - 2 -imidazolidone, 1 - (2 - cyclohexyl - 2 - vinyloxyethyl) - 2 - thioimidazolidone, 1 - ( 2 - vinyl - 2 - vinyloxyethyl) - 2 imidazolidone or 1 - (2 - vinyloxyethyl) - 2 - thioimidazolidone in which the emulsifying agent may be an octylphenoxypolyethoxyethanol.
Patent GB-1424936-A (GB)
Title: Vacuum circuit interrupters
IPC: H01H33/664
Filed: 1974-01-17
Abstract: 1424936 Vacuum interrupter HAZE MEIJER BV 17 Jan 1974 [30 Jan 1973] 02340/74 Heading H1N In a vacuum circuit interrupter of the kind disclosed in Specification 1,258,015, in which a coil 3 is disposed around the evacuated interrupter housing 4 coaxial with the axially-separating contacts 5 and 6, and connected in series therewith so that current flow therethrough generates a longitudinal magnetic field at the region of the contacts, the coil is embedded in solid insulating material and arranged to form the primary winding of one or more current transformers. The latter may be used for measurement or protection. Preferably the entire interrupter housing 4 is encapsulated in the synthetic resin body 1 in which the coil 3, comprising two turns, is embedded. As seen in plan, Fig. 2, the encapsulated coil extends outwards at the sides 19 in inverted U-shape to form openings 21 in which the split-ring-core secondaries of the current transformers 23-28 are accommodated. The coil 3 is connected to the moving contact by means of a current collecting contact 16. The free ends of the coil and the stationary contact are terminated in plug connectors 15 and 14 respectively, the encapsulating body being cylindrical in these regions and provided with rubber sleeves 33 and 34 to form a sealed connection with the bus-bar 17 and cable plug 35.
Patent GB-1422094-A (GB)
Title: Electronic flash apparatus
IPC: H05B41/32
Filed: 1974-01-17
Abstract: 1422094 Photo-flash control circuit FRANKE and HEIDECKE GmhH [trading as ROLLEI-WERKE FRANKE and HEIDECKE] 17 Jan 1974 [2 Feb 1973] 02355/74 Heading G2A Light from a flash-tube 3 is reflected by the subject on to a phototransistor 9, the resulting photo current is integrated by a capacitor 10, the voltage on capacitor 10 is applied to the control electrode of a thyristor 17 and a voltage inversely proportional to the rate of change of the voltage on capacitor 10 is applied to the cathode of thyristor 17 by a circuit 11-16; flash being terminated when thyristor 17 is turned on. As shown, an RC differentiating circuit 11, 12 connected to capacitor 10 controls the collector current of a transistor 14 which shunts a resistor 16 of a voltage divider 15, 16 in order to control the voltage on the cathode of thyristor 17. When thyristor 17 is turned on a capacitor 18 discharges through the primary of a transformer 19, and the secondary transmits the impulse to a device 6 which blocks a thyristor 4 to switch off the tube 3.