baber/WOPTO huggingface dataset:
Patent GB-700725-A (GB)
Title: Method of elimination phosphor discoloration in cathode ray tubes
IPC: H01J9/22
Filed: 1951-10-12
Abstract: 700,725. Luminescent screens. SYLVANIA ELECTRIC PRODUCTS, Inc. Oct. 12,1951 [Oct. 19, 1950], No. 23864/51. Drawings to Specification. Class 39(1) A permanganate is included in the dispersion solution used in settling a luminescent material through a liquid to form a screen. In the examples, potassium permanganate in 2.5-15 per cent solution is admixed with the binders, gelling agents and the luminescent material either simultaneously or at different stages. The binder may be potassium silicate with acetic acid, a silicate gelled by an ammonium compound, phosphoric acid or boric acid.
Patent GB-171754-A (GB)
Title: Improvements relating to tipping or dumping wagons
IPC: B61D9/02
Filed: 1920-08-16
Abstract: 171,754. Westinghouse Brake Co., Ltd., (Oppermann, G.). Aug, 16, 1920. Hopper wagons.-In hopper wagons of the kind in which the body or the doors are actuated by compressed air or vacuum transmitted by an auxiliary train pipe independent of the brake train pipe, connections are prov i d e d whereby the brake can be actuated from the auxiliary train pipe. The brake cylinder F is connected to the reservoir D and train pipe by a double check valve E, triple valve C, and cock B. The cylinder J for actuating the hopper doors is connected by three-way cocks K1, K2 opening in one position to the atmosphere and pipe L to a reservoir M, connected by a non-return valve N, cock R, and pipe U to the auxiliary train pipe W. The pipe U is connected to the valve E through a cock S, which with the cock R is normally open. In operation, to charge the reservoir M, compressed air is admitted to the train pipe W, which passes also through the cock S and actuates the brake, after which the pipe W is vented to the atmosphere. Air is admitted to the actuating-cylinder J by means of cocks K1, K2. The door &c. may be operated in one direction by a spring and one of the cocks K1, K2 dispensed with.
Patent GB-461357-A (GB)
Title: Improvements in the manufacture and production of vinyl compounds
IPC: C07D209/86
Filed: 1935-08-27
Abstract: N-Vinyl compounds are manufactured by reacting acetylene at elevated temperatures on pyrrole, an organic substance containing the pyrrole ring, or a secondary diarylamine, in the presence of an alkali metal or a substance having a strongly alkaline reaction and zinc or a zinc compound, e.g. zinc shavings, zinc dust, zinc oxide, zinc salts or alkali metal zincates, which may be added as such or precipitated on carriers.  The process may be continuous.  In examples: (1) carbazole dissolved in cyclohexane is treated at 180 DEG  C. with a mixture of acetylene and nitrogen under pressure in the presence of potassium hydroxide and zinc dust, yielding vinylcarbazole; (2) the zinc dust in (1) is replaced by zinc oxide; (3) the zinc dust in (1) is replaced by zinc sulphide and the cyclohexane by hexahydroxylene; (4) diphenylamine is treated with acetylene at 180--190 DEG  C. in the presence of potassium hydroxide and zinc oxide, producing vinyldiphenylamine.
Patent GB-644268-A (GB)
Title: Improvements in and relating to a.c. motors for cranes and other load raising and lowering apparatuese
IPC: B66C13/26
Filed: 1948-09-13
Abstract: 644,268. Control of A.C. motors. SMELLIE & PARTNERS, Ltd., J. H., and SMELLIE, J. H. Sept. 13, 1948, No. 23971. [Class 38(iii)] A three-phase induction hoist motor A has a controller B in the first hoisting- position of which contactors E and D are closed respectively to energize the stator and to remove an electro-magnetic brake C. Thereafter, the controller is moved to reduce rotor resistance H. When the controller is moved to the first lowering notch a contactor G is closed and the stator is supplied with direct-current through transformer K and rectifier L. The brake is removed, so that the motor rotates under the action of its load at a creeping speed which may be increased by increasing the resistance of the rotor circuit. The motor is driven in the lowering direction when the controller is adjusted to its last lowering notch, the contactor G being opened, all or part of the resistors H being restored to the rotor circuit, and contactor F closed for appropriate energization of the motor stator. If the current generated by the motor when driven by its load becomes excessive, a relay-coil m in the rotor circuit operates a switch M to de-energize the brake contactor coil d. So that, when the load is lowered out of control, the brake is applied to stop the motor and then the coil m is de-energized to remove the brake. The load is then lowered at a speed determined by the position of the controller, and, if control of the load is again lost, the cycle of operations is repeated. The relay m is rendered ineffective during hoisting-operation. To obtain uniform lowering speed with various loads, a transformer P is included in the rotor circuit and rectified current is supplied to coils r1, r2, r3, of relays R1, R2, R3, which control resistor S in the circuit through which direct-current is supplied to the motor stator. The relays R1, R2, R3, are operative at different current-values so that the resistor S is adjusted in accordance with the load. Failure of current passing through relaycoil t opens contact T to apply the brake.
Patent GB-1115627-A (GB)
Title: Curable interpolymers
IPC: C08F210/18
Filed: 1966-05-31
Abstract: An interpolymer of at least one monoolefin and a multi-unsaturated hydrocarbon, at least part of said hydrocarbon being bicyclo-[2.2.1]-hepta-2, 5-diene, and which is soluble in hydrocarbons, has an intrinsic viscosity in benzene at 25 DEG  C. no higher than 0.4, and sufficient ethylenically unsaturated groups in the polymer molecule to permit substantial curing of films by oxidative mechanism is made by copolymerizing the monomers in the absence of oxygen in the presence of a Ziegler-type catalyst containing a transition metal.  The Specification contains long lists of monomers. Exemplified monomers are mixtures of (1) ethylene, propylene, dicyclopentadiene, and bicycloheptadiene, and (2) ethylene, propylene, and bicycloheptadiene.  The polymerization and recovery of the copolymers is carried out by conventional "low-pressure" methods.  Molecular weight regulators such as hydrogen and dialkyl zinc may be present.ALSO:Substrates made of metals, wood glass, and plastics, are coated with a composition comprising an interpolymer of at least one monoolefin and a multi-unsaturated hydrocarbon of which at least part is bicyclo [2.2.1] hepta-2, 5-diene, and which is soluble in hydrocarbons, has an intrinsic viscosity in benzene at 25 DEG C no higher than 0.4, and is curably by an oxidative mechanism.  The compositions may be solutions or dispersions in organic solvents, or water-containing emulsions.  The interpolymers may be air-cured at room or elevated temperatures, and the curing may be assisted by metal driers.  The substrate may be made of iron, steel, aluminium, copper, nickel, tin, wood, glass, or polyesters. In the examples interpolymers of ethylene, propylene, bicycloheptadiene, and optionally dicyclopentadiene, are coated on phosphatized steel panels and cured.
Patent GB-1077891-A (GB)
Title: Improvements in oxygen blowing apparatus for steel making
Inventor: STEVENS DAVID TERENCE
IPC: C21C5/46
Filed: 1964-06-10
Abstract: 1,077,891. Oxygen lances. RICHARD THOMAS & BALDWINS Ltd. June 9, 1965 [June 10, 1964], No. 24108/64. Heading F4B. [Also in Division F2] The width of the cone angle of an oxygen jet from a nozzle 6 of a water-cooled lance is varied by means of a swirler (5) comprising inclined blades 25 affixed to a hub 23 which is mounted on a gas bearing, while a brake operative with respect to the gas pressure in a supply pipe (7) coaxial with the main oxygen pipe, controls the hub's rotation. The pipe (7) connects to a central fairing 10 into which is screwed a hollow tubular spindle 15, tapering at 18 to a narrower solid part 20 connected to a downstream fairing 26 and surrounded by a spring 32. A loose-fitting perforate sleeve 21 spaces the hub and a bush 24 from the spindle 15, wherein are also peripheral grooves 16 containing holes 17 from which oxygen passes to lubricate the bearing. A brake 31 sliding in the hollow portion 30 of the fairing 26 is urged by the spring 32 against the hub 23 and fairing 10. At high pressures, oxygen from holes 15 in taper part 18 forces the brake and spring back and allows the gas to pass via conduits 36 and an annular space 33 to the main gas stream, thus freeing the hub for rapid rotation and causing no swirl to the oxygen stream. Oxygen from the holes 17 lubricates the bearing 24 before also mingling with main oxygen stream. When the pressure is reduced, the reverse happens and the spring urges the brake 31 against the fairing 10 to clamp the swirler, when the stationary blades 25 impart a high swirl to the oxygen stream. By suitably adjusting the gas pressure, a variation in the swirl may be obtained.
Patent GB-716780-A (GB)
Title: Improvements in or relating to heat-exchange apparatus
Inventor: CORBITT ROBERT WILLIAM
IPC: F28F13/06
Filed: 1949-07-25
Abstract: 716,780. Tubular heat - exchangers, ROLLS-ROYCE, Ltd. June 29, 1950 [July 25, 1949], No. 24197/53. Divided out of 716,701. Class 64(3) Relates to tubular heat-exchangers in which the external fluid flowing over a bank of straight tubes has at all places in the tube bank a flow component at right angles to the tubes. According to the invention, baffle plates are provided downstream of the tube bank and are inclined at an angle other than a right angle to the plane defined by the direction of flow of the external fluid through the bank and the axial direction of the tubes. It is stated that this baffle arrangement is such that-the loud audible whistle occuring in such heat exchangers is reduced or avoided. Figs. 1 and 2 show such baffles 15 provided in a heat exchanger of the straight through type. Fig. 3 similarly shows the baffles 24 provided in apparatus incorporating an annular tube bank. These heat exchangers may have additional baffles (e.g. baffles 13 Figs. 1 and 2) arranged in the manner described in Specification 716,701.
Patent GB-1018694-A (GB)
Title: Differential direct current voltage limiter
IPC: H02H9/04
Filed: 1964-06-11
Abstract: 1,018,694. Limiters. BENDIX CORPORATION. June 11, 1964 [June 12, 1963], No. 24301/64. Heading H3T. A differential variable D.C. voltage is applied to windings 15, 16 of a magnetic amplifier from a source 5 comprising two D.C. generators 6, 7 and potentiometers 8, 9 the sliders of which are ganged and driven from a device 10, the arrangement being such that the potential on line 13 is positive relative to that on line 12 and increases as a corresponding positive potential on line 14 decreases. According to the invention the difference in potential between lines 13, 14 and also the differences between the potentials of these lines and line 12 are limited to predetermined values by means of. a bridge network comprising diodes 21-24, in conjunction with Zener diodes 30, 36, and a switch 28. Thus with switch 28 closed, conduction in diodes 22, 30, 24 limits the potential by which line 13 can be positive to line 14, and conduction in diodes 21, 30, 23 determines the maximum potential of line 14 above that of line 13: likewise the potential of either line cannot exceed that of line 12 by more than the breakdown voltage of Zener diode 36. Two further diodes 32, 34 prevent reaction upon the source 5, while resistors 38, 40 enable the voltages on the windings 15, 16 to be less than the voltages on the lines 13, 14.
Patent GB-1186611-A (GB)
Title: Improvements in or relating to Means for the Transmission of Electrical Signals
IPC: G08C15/02
Filed: 1967-05-25
Abstract: 1,186,611. Measuring physical variables electronically; voltage measurement. SOUND DIFFUSION (SALES) Ltd. and C.R.P. STONOR. July 4, 1968 [May 25, 1967], No.24322/67. Headings G1N and G1U. In a measuring system in which a physical variable is intermittently measured at a substation and a signal indicative of the variable transmitted back to a central station, the substation measuring circuitry is powered by discharge of a capacitor at the substation which is charged between measurements from a D.C. supply at the central station. An electrolytic capacitor 26, Fig. 3, of current generator 12, Fig. 2, is connected together with a diode 28 across a D. C. supply connected to leads 11, to be charged therefrom. When a measurement is to be made, the D. C. supply connections are reversed causing energization of a relay 29 controlling a switch 31 connecting the capacitor 26 to a discharge circuit including transistor 32 to produce a constant voltage and current signal. This signal is supplied to energize a ramp generator 15 producing a linearly increasing voltage which is compared at 13 with a voltage representative of the variable to be measured. The error signal is supplied to an oscillator 14 which is energized until the two input voltages to comparator 13 become equal. Thus the duration of energization of the oscillator is indicative of the magnitude of the variable being measured. The oscillator output is connected via filter 16, transformers 17, 18, the latter being located at the central station, filter 19 to a receiver 20 whose output energizes a ramp generator 21 for the duration of the signal from the oscillator. The level of the output from the ramp generator, metered or recorded at 22, is thus indicative of the measured variable. A plurality of substations, Fig. 1 (not shown), may be energized from the same D. C. source and connected by the same cable to the central station the oscillators being arranged to operate at different frequencies so that their signals may be separated at the central station.
Patent GB-1437476-A (GB)
Title: Radiation cross-linked polyurethane foams
IPC: C08G18/82
Filed: 1973-05-22
Abstract: 1437476 Irradication-modified cross-linked polymethane foams SCOTT PAPER CO 22 May 1973 [1 June 1972] 24415/73 Heading C3R A polyurethane foam comprising the reaction product of: (a) a polyol consisting of (i) a polyester polyol, (ii) a polyester polyol of M.W. not exeeding 1500 or (iii) a mixture of a polyester polyol of M.W. 400 to 5000 and polyester polyol of M.W. 250 to 6500; (b) an organic polyisocyanate; and (c) at least one cross-linking agent consisting of an at least bis-acrylate or methacrylate, triallyl cyanurate, methyl methacrylate, 1,5-cyclooctadiene or bis(beta-chloroethyl)vinyl phosphonate is subjected to ionising radiation at a dosage sufficient to modify the properties of the foam. Apart from (a), (b) and (c) the reaction mixture also includes a catalyst, e.g. a t-amine or metal salt; blowing agent; and optionally a surfactant, fillers, pigments, dyes, plasticisers or stabilizers. The ionising radiation has an energy of at least 50 ev., preferably at least 0À1 mev. The reactants and catalysts are extensively exemplified. The treatment is stated to increase the tensile and tear strength and improve the compression/deflection characteristics of the foam. Several possible applications of the product are specified.
Patent GB-1059868-A (GB)
Title: Process for the production of cyclic hydroxyacetals
IPC: C07D493/04
Filed: 1965-06-09
Abstract: The invention comprises cyclic hydroxy acetals of the formula <FORM:1059868/C2/1> and <FORM:1059868/C2/2> wherein R is a methyl or ethyl group and a method of making a mixture of the compounds by heating trimethylolethane or trimethylolpropane with glyoxal tetra-n-butyl acetal, glyoxal tetra-iso-butyl acetal, glyoxal tetraethoxyethyl acetal or glyoxal tetramethoxyethyl acetal in the presence of an acid catalyst. It is preferred to conduct the reaction in vacuo at 100-150 DEG  C. in the presence of a solvent. Specified catalysts are p-toluene sulphonic acid and an ion-exchange resin which is a sulphonated copolymer of styrene and divinylbenzene. The isomers can be separated by adding benzene and butanone to the acidic reaction mixture, distilling off the water azeotropically, cooling to precipitate the compound II, distilling the filtrate to remove benzene and butanone and crystallizing the compound I from the residue. The butanone and an unreacted trimethylol alkane in the reaction mixture form a cyclic hydroxyketal of the formula <FORM:1059868/C2/3> which can be hydrolysed to recover the components. A second method of separation comprises acetylation of the reaction mixture using acetic anhydride and fractional distillation to separate the two acetates.  The hydroxy compounds are recovered by hydrolysis, e.g. using sodium methoxide.
Patent GB-1145998-A (GB)
Title: Improved embossing die
Inventor: HARRISON DENNIS
IPC: B44B5/00
Filed: 1965-06-11
Abstract: 1,145,998. Embossing-surfaces. C. KOSEN & SONS Ltd. 10 June, 1966 [11 June, 1965], No. 24689/65. Heading B6C. A die for radio frequency embossing of sheet material, such as P.V.C. coated material comprises a locating strip 12 attached to an embossing-machine and screwed to a thin aluminium base-plate 10 to which are riveted metal strips or other pieces having embossing-surfaces 16, e.g. serrated to produce an imitation stitch effect. Packing pieces may be inserted between the members 10, 12.
Patent GB-1413590-A (GB)
Title: Call queuing circuit for an automatic telephone switching system
IPC: H04Q3/00
Filed: 1973-05-24
Abstract: 1413590 Automatic exchange systems INTERNATIONAL STANDARD ELECTRIC CORP 24 May 1973 [8 June 1972] 24818/73 Heading H4K In a call queueing arrangement for calls incoming to operator positions, each queueing calling line has associated therewith a ramp generator which produces a uniformly increasing voltage which voltage is utilized by a longest waiting call detector so as to ensure the calls are dealt with in order of arrival. The ramp voltage may also drive a D.C. voltmeter to give an indication of the waiting time at an attendants position. A request for an operator causes a relay SR1-SRn to operate to connect the calling line to a ramp generator GEN1-GENn via contacts sr1-srn. Closure of a contact, e.g. sr1 causes a capacitor C, Fig. 2, in the corresponding ramp generator GEN1 to be charged by a constant current arrangement including transistors T1, T2 Zener diode Z1, and resistors R2, R3 so as to supply a ramp voltage to a, corresponding longest waiting call detector LWD1 and to a meter M-1 individual to the ramp generator GEN-1. All the longest waiting call detectors have the emitters of transistor T4 connected in multiple to a resistor RE via parallel contacts CT1-CTn and CB1-CBn. If all the operators are busy contacts CB1-CBn are open and when an operator becomes free the corresponding contact is closed which causes assuming call type relay contacts CT1-CTn are closed, the longest waiting call detector having the highest ramp voltage applied thereto to energize an operator demand relay ORD1- ORDn to connect the subscriber to the operator. Diode D7 and resistor R8 provide positive feedback to prevent two longest waiting detectors having similar ramp voltages applied thereto from stealing, i.e. once one transistor T5 has turned on it is clamped on.
Patent GB-800467-A (GB)
Title: Improvements in or relating to calendar clockwork
IPC: G04B19/253
Filed: 1956-08-14
Abstract: 800,467. Intermittent toothed gearing. MONTRES ROLEX S.A. Aug. 14, 1956 [Aug. 19, 1955], No. 24893/56. Class 80 (1). [Also in Group XIX] An internally toothed crown-shaped disc 8 bearing date numerals 9 is advanced suddenly at the end of every twenty-four hours by a finger 4a rigid with a rotatable sleeve 4 to which is secured a spiral cam 10. A driving wheel 3 loose on the sleeve 4 rotates at a speed of one revolution in twenty-four hours and drives the cam 10 through pin and slot 11, 12 lifting a jumper 13 until it reaches the end of the cam spiral and acts on a ramp 18 of the cam to give it a sudden movement. With this movement of the cam 10 the finger 4a engages between teeth 7 of the disc 8 which is thus advanced suddenly. As shown, the pin 11 is carried by the cam 10 and engages in a slot in the wheel 3. The jumper 13 is urged against the cam 10 by a spring 15 and a detent 19 prevents untimely movement of the disc 8. The ramp 18 is are-shaped to avoid damage on reverse movement during setting.
Patent GB-1267407-A (GB)
Title: Improvements in electric cables
Inventor: HIGGINS PETER
IPC: H01B9/00
Filed: 1969-05-15
Abstract: 1,267,407. Electric couplings. BRITISH INSULATED CALLENDER'S CABLES Ltd. 14 Aug., 1970 [15 May, 1969], No. 24894/69. Addition to 1,233,266. Heading H2E. [Also in Division H1] A distribution cable 1 has three power conductors 2 of aluminium or aluminium-based alloy, each insulated with ethylene propylene rubber 3 around which is lapped a layer of insulating tape 4 and a neutral concentric conductor 5 consisting of a single layer of copper wires applied helically with a periodically reversing lay. At each of a number of spaced locations 18 two lengths of branch cable 11 are connected to the distribution cable 1. Each branch cable 11 has an aluminium or aluminiumbased alloy power conductor 12 insulated with P.V.C. 13 which is surrounded by a copper wire concentric conductor 15 applied helically with a uniform lay. The cables 1, 11 are connected by unwinding part of the concentric conductor 5 and removing the insulation 4, 3 around the conductors 2, stripping the end of the branch cable 11, welding the conductors 2, 12 together, replacing the concentric conductor 5 and sweating together the concentric conductors 5, 15. The two branch cables 11 are then laid along the outside of the distribution cable 1 with their concentric conductors 5, 15 spaced and P.V.C. 16 is extruded around them. Before the extrusion, free ends of the conductors 12 of adjacent branch conductors 11 may be fitted in opposite ends of a rigid tube having an external diameter the same as that of the branch cables 11. Shavers or rollers shape the sheath 16 on leaving the extruder into an eight-shaped crosssection along the branch cables, but are removed from the sheath at the joints to give a means of locating the joints. The web 17 thus formed may be slit either in production or when the cable is to be used. The position of the rigid tube, if present, may also be marked by a marking head. Each branch cable may be connected to the distribution cable 1 at both ends, the branch cable being cut to produce two branch cables on site, and more than two branch cables may be attached at any joint, the branch cables being spaced around the distribution cable.
Patent GB-361919-A (GB)
Title: Improvements in or relating to drawing boards
IPC: B43L13/04
Filed: 1930-08-22
Abstract: 361,919. Drawing-appliances. FAZAN, B., 105, Mortlake Road, Kew, Surrey. Aug. 22, 1930, Nos. 25155 and 34862. [Class 97 (iii).] In drawing-boards of the kind having metal battens G of angular or other cross section extending therebeneath, a metal straightedge B, against which the stock C of a tee-square may slide, is mounted directly on the extended ends of the battens, parallel with, but spaced apart from, the edge of the board A proper, in order to eliminate the effects of warping of the board. One or more leaf-springs D, the tension of which can be varied by means of screws E, serve to hold the stock of the tee-square against the straight-edge.
Patent GB-211830-A (GB)
Title: Improvements in or relating to excavators or the like
IPC: E02F9/02
Filed: 1923-10-09
Abstract: 211,830. Bucyrus Co., (Assignees of Lehman, W.). Feb. 26, 1923, [Convention date]. Relay or power apparatus; adjusting fore carriages for steering.-An excavator or the like has three independent endless-track units the front two of which are spaced laterally apart while the rear unit is swivelled for steering by power derived from the propelling engine. The rear track-unit 23 comprises a frame 24 pivoted to the main frame and steered by worm gearing 60, 62 operated from an enginedriven shaft 12 through bevel gearing 70, 69, a clutch 71, and bevel reversing gearing 65, 66, 72.