baber/WOPTO huggingface dataset:
Patent GB-687468-A (GB)
Title: Improvements in or relating to transformer circuits
IPC: G05F3/06
Filed: 1951-10-24
Abstract: 687,468. Automatic regulation. CONCORDIA ELECTRIC SAFETY LAMP CO., Ltd., and STEADMAN, C. H. Oct. 24, 1951, No. 24852/51. Class 38 (iv). Transformer primary windings 10, 18 and secondary windings 11, 17, 22 are arranged on a common core and connected as shown with condensers 12, 24 so that a substantially constant alternating voltage is obtained from leads 20, 21 despite load variations or variations in voltage or frequency of a mains supply to leads 13, 14. Winding details and values of capacity are given.
Patent GB-308148-A (GB)
Title: Improvements in edible containers for ice-cream or other fillers
IPC: A23G9/32
Filed: 1928-08-29
Abstract: 308,148. Gerber, D. Aug. 29, 1928. Containers for ice-cream &c. -An edible container for ice cream &c. is made substantially rectangular and is provided internally with means for supporting the front and back walls and with ribs for supporting the ice cream or the like above the bottom. As shown, the support for the walls 11, 12 comprises a partition 18 formed integrally with the walls and with the bottom 15 which is provided with the ribs 19. The end walls 13, 14 are inclined and the mouth of the container is flared. The end and side walls may also be formed with ribs 19.
Patent GB-394175-A (GB)
Title: Improvements in metallic packings for pistons, piston valves and the like
IPC: F16J9/06
Filed: 1932-09-07
Abstract: 394,175. Piston-rings. ASHWORTH; R. C. and UNIVERSAL METALLIC PACKING CO., Ltd., Beehive Works, Downham Street, Leeds Road, Bradford. Sept. 7, 1932, No. 24902. [Class 122 (i).] Split packing-rings C, D of L-section, for a piston &c. are expanded radially and simultaneously pressed against the junk ring and piston flange by an inner annular spring ring G, substantially semi-circular in cross-section, Fig. 1. The ring G is split and is expanded by a helical spring H, Fig. 3, bearing against pieces J abutting the ends of the ring. The spring H is retained in position by curved plate K passing through the pieces J and secured to one of they by a screw L. Washers M may be inserted between the spring H and the pieces J to increase the expansion. The ring G is preferably made of non-corrodible material.
Patent GB-1007794-A (GB)
Title: Improvements in devices for detecting earth faults in electric distribution networks
IPC: H02H11/00
Filed: 1962-06-28
Abstract: 1,007,794. Protective arrangements. CHARBONNAGES DE FRANCE. June 28, 1962 [July 3, 1961; March 15, 1962], No. 24913/62. Heading H2K. When a contactor 6 1  is opened due to an earth fault condition, auxiliary contacts 14 of the contactor connect a " coupling " circuit to earth, so that energy stored in the protected circuit can flow through the operating coil 16 of a " holding " relay, which opens, and then maintains open, its contacts 17 in circuit with the operating coil 18 of the contactor 6 1  to prevent reclosing of the contactor. The opening of the contactor may be effected by an earth leakage protective device (not shown), or on the drop in voltage due to the opening of a main circuit-breaker. The coupling circuit may comprise star-connected capacitors 29, resistors, or resistors and diodes. When the protected circuit includes a motor, the stored energy may be provided by the motor briefly acting as a generator when the contactor is opened. Alternatively or additionally, the stored energy may be provided by a capacitor which is normally maintained in a charged condition. The relay may be a magnetic holding relay and may have opposing windings, one connected in the coupling circuit and the other connected for energization by a phase voltage. This avoids any change in the sensitivity of the relay due to changes in the supply voltage. The relay may have contacts in an alarm circuit and the arrangements may be applied to single phase circuits.
Patent GB-447040-A (GB)
Title: Improvements in or relating to control valves for use in vacuum braking systems
IPC: B60T13/46
Filed: 1935-08-29
Abstract: 447,040. Fluid - pressure brakes. CLAYTON DEWANDRE CO., Ltd., EDGE, S. H., and FAGARD, J., Titanic Works, Lincoln. Aug. 29, 1935, No. 24934/34. [Class 103 (i)] Brakes held released by vacuum are controlled by a valve comprising a vacuum valve 1 connected to the control lever, and adapted, when the brakes are applied, to seat on an air valve 2 to cut off communication between the vacuum pipe 5 and brake cylinder pipe 4, and subsequently to open the air valve 2 to connect the brake cylinder with the air port 6. The different pressure acting on the valves 1, 2, tends to move them in a direction to release the brakes and causes a reaction on the foot of the driver, which when it overcomes the manual effort causes valve 2 to reclose and hold brakes applied. In the modification shown in Fig. 2, the central lever is connected to a piston 17 in a cylinder connected at 19 to the brake cylinder and at 20 to vacuum. Ports 23 in the piston are closed by a valve 21 when the piston is moved to apply the brake and the valve 21 then connects the brake cylinder to air ports 27. The brake may be applied by a spring or one side of the brake piston may be connected permanently to vacuum. The valve may be operated by the pedal through a balance lever, also connected directly to the brakes.
Patent GB-850972-A (GB)
Title: Improvements in or relating to expanding link bands
IPC: A44C5/08
Filed: 1957-08-08
Abstract: 850,972. Bracelets. ELLIS, G. H. S. (Clements (Export) Ltd., A. B.). Aug. 7, 1958 [Aug. 8, 1957], No. 24989/57. Class 43 An expansible band comprises two layers of staggered channel section links a interconnected by pairs of rectangular connecting links b which engage a leaf spring c in each link. The lower links may be narrower and shallower than the upper links and the connecting links may have a small central gap.
Patent GB-689208-A (GB)
Title: Improvements relating to timebase circuits
Inventor: VAUGHAN-JONES IAN NORMAN
IPC: H04N5/10
Filed: 1950-10-13
Abstract: 689,208. Automatic frequency control systems. FERRANTI, Ltd. Oct. 12, 1951 [Oct. 13, 1950], No. 24990/50. Class 38 (iv). [Also in Group XL (b)] The frequency of the frame time base generator of a television receiver or the like is synchronized to the frame sync. signals by integrating the pulses comprising each frame sync. signal 30, Fig. 2 (a), to derive a potential 31, Fig. 2 (b), which changes unidirectionally throughout the period 30, a D.C. control signal, derived in dependence on the value of the potential 31 at the moment of recurrence, 33 or 33<SP>1</SP>, of the fly-back of said time base, being applied to the time base generator in such manner as to maintain its frequency synchronized to the frame sync. signals. The incoming sync. signals, Fig. 2 (a), are applied at 10, Fig. 1, to an integrating network 11 ... 14 to provide at 15 a voltage which rises at 32, Fig. 2 (b), during the recurrence of the line pulses and falls at 31 during each frame signal 30. The voltage at 15 is applied by condenser 16 and leak resistor 18 to the grid of a valve 17 whose anode is connected to earth by a resistor 19 and is coupled by a condenser 20 to the anode of the frame sawtooth-current generator 21. At the moment of fly-back, the condenser 20 supplies a positive pulse 33 or 33<SP>1</SP>, Fig. 2 (c), to the anode of the valve 17, and the current passed by the valve depends on the momentary value of its grid voltage. If the fly-back pulse occurs early as at 33<SP>1</SP>, the grid voltage corresponds to point 35, Fig. 2 (b) ; if at the correct moment, to point 34. The effect of the passage of current through the valve is to depress its anode voltage, and this D.C. control voltage is transferred through resistors 25, 26 and smoothing condenser 27 to the grid of the valve 21 to adjust its frequency in the correct sense.
Patent GB-259032-A (GB)
Title: Improvements in or connected with drinking bowls for animals
IPC: A01K7/06
Filed: 1925-10-07
Abstract: 259,032. King, D. M. Oct. 7, 1925. Valves actuated by nose plates for animals.-In a drinking-trough for animals of the type in which the supply valve 3 is controlled by a pivoted plate 6 adapted to be pressed down by the nose of an animal, the valve casing 1 carries the outlet nozzle 2 which is formed with a projecting lug 7 at each side within which is a recess to take the pivot pin 11 of the plate 6. Each pivot pin 11 is formed with flattened sides and a slot 9 extends through each lug 7 to its recess so that the pins may be moved into or from the recess by tilting the pivot plate so that the flattened portions of the pins pass through the slots. The plate arms 10 are formed with bulges 26 at the back, these bulges permitting the normal action of the plate but not allowing the bowl to be lifted for removal while the plate is in position. A modification is described in which the plate is pivoted in brackets extending below the valve casing. The valve may have its spring 5 arranged above or below the closing member and the pressure of the spring may be adjusted by a nut formed with a ridge adapted to be engaged by a pair of pincers.
Patent GB-450434-A (GB)
Title: Improvements in and relating to apparatus for the treatment of rubber latex
IPC: C08C1/04
Filed: 1935-09-09
Abstract: 450,434. Gravity-separation apparatus. KELLITT, W., Atherton Estate, Siliau, Federated Malay States. Sept. 9, 1935, No. 35061. [Class 46] A settling-tank to remove impurities from rubber latex has a conical bottom and a detachable sludge trap at the foot, a valvecontrolled inlet being in the vicinity of the conical bottom, and an outlet near the' sludge trap, means being furnished within the tank, which is preferably closed, for isolating the bulk of the latex from the impurities settled in the trap. The tank may form part of the apparatus described in Specification 450,435, [Group V]. A settling tank 1 of approximately 10,000 gallons capacity carries a sludge trap 6 of approximately 240 gallons capacity which may be isolated from the bulk of the latex by valve 5. Latex is led into the tank via a flume 9 and a pipe 10 leading into the tank just above the bottom to prevent frothing. The valve 5 is lifted by hand wheel 16 and maintained adjacent the roof, as are the perforated stirring plates 20. After 3 to 7 days, the sludge trap is closed by valve 5, and, after stirring, the latex is run off through a cock 27 in the bottom of the tank. If it is not stirred, latex of differing rubber content may be run off through cocks 28, disposed at different levels. All interior surfaces are given a protective coating to prevent deterioration of the latex. The tank mav be washed between operations through valve 31.
Patent GB-1014775-A (GB)
Title: Water jet reaction motors for marine craft
IPC: B63H11/00
Filed: 1962-06-29
Abstract: 1,014,775. Hydraulic Jet propulsion. BERLINER MASCHINENBAU A.G. June 29, 1962 [July 11, 1961], No. 25099/62. Heading B7V. A water-jet propulsion motor for a marine vessel comprises an outlet pipe 7, combustion chamber 10 connected to the pipe 7 by a conduit 11, inlet pipe 9, and a non-return valve 8. Water drawn in at 9 is expelled by combustion gases through the outlet of the pipe 7 to give a propulsive thrust, but is prevented from being expelled back through the inlet 9 by the circulatory action of the valve 8.
Patent GB-633480-A (GB)
Title: Manufacture of a dyestuff of the anthraquinone series
Filed: 1946-08-23
Abstract: The leuco - sulphuric ester of 1 : 4 - di - (p-methane - sulphonylbenzoyl - amino) - anthraquinone and the salts thereof is made by a process comprising treating a metal salt of the corresponding leuco compound or a complex compound comprising the metal salt of the corresponding leuco compound, in the presence of an organic amide derived from a secondary amine, with sulphur trioxide, or with an addition compound of sulphur trioxide and an organic amide or tertiary base or with any substance known to be capable of forming sulphuric esters from vat dyestuffs in the presence of metals, or from leuco compounds, or metal salts thereof, or complex compounds comprising the metal salts thereof. Amides specified are dimethylformamide, diethylformamide, dimethylacetamide, N : N-diethyl-p-toluenesulphonamide, tetramethylurea.  Diluents specified are acetone and nitrobenzene.  The metal salt is made by reacting the dye with, e.g. zinc, in presence of the amide and preferably a catalyst such as potassium methyl sulphate.  The product dyes textiles pink shades.  In examples: 1 : 4-di-(p-methanesulphonylbenzoylamino)-anthraquinone is (1) heated with zinc dust, potassium methyl sulphate and dimethylformamide, followed by treatment with a solution of sulphur trioxide or methyl chlorosulphonate in dimethylformamide; (2) heated with zinc dust, sodium b -naphthalene sulphonate and N-formylmorpholide, followed by treatment with sulphur trioxide and N-formylmorpholide addition compound.  Specifications 274,156, [Class 2 (iii)], and 633,481 are referred to.
Patent GB-264210-A (GB)
Title: Improvements in machines for forming partitions for boxes
IPC: B31B11/00
Filed: 1925-10-09
Abstract: 264,210. Thomlinson, W. G. Oct. 9, 1925. Feeding webs.-Strips 3 for making partitions for boxes are fed intermittently by inclined reciprocating grip feed devices 11 which consist of spaced bars slidable on pins 36 in a carriage 37 reciprocated along rods 35 by a cam on the shaft 30, the strips passing between the bars and being fed forward when a cam-actuated beam 38 slidable on pins 39 in the carriage forces the bars together to grip the strips.
Patent GB-940829-A (GB)
Title: Magnetic sensing device
Inventor: BEBRY RONALD SYDNEY
IPC: G05F1/575
Filed: 1962-07-02
Abstract: 940,829. Automatic current control systems. VARIAN ASSOCIATES. July 2, 1962, No. 25276/62. Heading G3R. [Also in Division H3] In an automatic current control system for e.g. the magnet of a nuclear magnetic resonance device, current deviation is sensed by a second harmonic magnetic modulator (see Division H3); which provides an A. C. output having an amplitude proportional to the deviation of the current from a reference value, and a phase-sense dependent on the sense of the deviation. As shown a three phase supply rectified and filtered at 21,passes through a bank of parallel connected transistors 22, and the magnetic modulator sensor 20 to the load (magnet 23). The output of the modulator is applied to a phase sense discriminator 26 to control the transistor. A rheostat 19 in the magnetic modulator reference current supply allows adjustment of the set load current value. A servo-control unit 24 controls a variable transformer in the supply unit to maintain a constant voltage across the transistors despite any fluctuations in current.
Patent GB-723068-A (GB)
Title: Improvements in or relating to gas-filled electric discharge valves of the kind comprising a mercury cathode
IPC: H01J17/00
Filed: 1952-10-09
Abstract: 723,068. Metal-vapour apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 9, 1952 [Oct. 12, 1951], No. 25312/52. Drawings to Specification. Class 39 (1). A molybdenum or iron grid, such as gauze or a spiral, is arranged to check oscillations of the surface of the mercury cathode of an electric discharge tube. The grid is fixed in position within the valve or is allowed to float on the mercury. The valve is suitable for use as a pulse generator for radar and may consist of a glass bulb which contains hydrogen at a pressure of one and a half atmospheres.
Patent GB-1305866-A (GB)
IPC: C07C69/15
Filed: 1971-04-19
Abstract: 1305866 Vinyl acetate NATIONAL DISTILLERS & CHEMICAL CORP 19 April 1971 [26 March 1970 (2)] 25427/71 Heading C2C Vinyl acetate containing ethyl acetate is purified by distilling in the presence of an active hydrogen containing compound selected from amines, amides and hydroxy compounds. The vinyl acetate may be introduced to the distillation column at an intermediate point and the hydrogen-containing compound at a point above the vinyl acetate inlet, the vinyl acetate is then recovered from the upper portion of the column and ethyl acetate-active hydrogen containing compound recovered from the lower portion. Active hydrogen containing compounds are aromatic aliphatic or alicyclic hydroxy containing compounds such as alcohols, glycols and phenols, e.g. phenol, m-, o-cresol or mixtures thereof, xylenol, naphthol, n-butanol, t-amyl alcohol, 2-ethylhexanol, cyclohexanol, phenethyl alcohol, ethylene glycol, C 10  isosebacic glycols, aniline and formamide. A recycle step for the solvent is included.
Patent GB-418400-A (GB)
Title: Improvements in or relating to coupling devices for trailers
IPC: B62D53/08
Filed: 1933-09-14
Abstract: 418,400. Semitrailer couplings. LAGACHE ET GLASZMANN, 6, Boulevard VereingÚtorix, Argenteuil, Seine-et-Oise, France. Sept. 14, 1933, No. 25454. Convention date, Sept. 23, 1932. [Class 79 (iii).] In semitrailer coupling means of the kind wherein the front end of the trailer rests on a cross-member supported on the back axle of the tractor by springs which are independent of the springs supporting the tractor frame, additional supporting means are provided for the cross-member to hold the cross-member springs off the tractor axle when relieved of the weight of the trailer. The cross member 16, which carries the conventional coupling fork 17 and pivoted turntable bearing plates 20, 21, is mounted in vertical guides 14, 15 fixed to the tractor frame 10 and transmits the weight of the trailer to helical springs 23, 24 which rest on bearing plates 25 carried either directly on the back axle 11 or upon the middle of the tractor suspension springs 13 attached to the axle. When relieved of the weight of the trailer, however, the cross member together with the springs 23, 24 is raised as shown in Fig. 3, by relatively weak supplementary springs 18 located in the guides 14, 15. Hydraulic jacks supported by the frame 10 or axle 11 and controlled by the driver may be substituted for the springs 18.
Patent GB-259380-A (GB)
Title: Improvements in dynamo-electric machines
IPC: H02K9/16
Filed: 1925-10-13
Abstract: 259,380. Gilbert, N. W., and Jabet, A. E. Oct. 13, 1925. Armatures and field magnets, cooling. - In enclosed machines of the kind described in Specification 246,323. wherein heet-conducting fins c project inwardly from the casing a and a fan h is arranged to circulate the enclosed air over the heated parts and then over the cooling-fins, and wherein external cooling-fluid is passed through ducts b formed in the machine casing, the circulation of the enclosed air is improved by partitioning the enclosed space to form two concentric annular chambers f, g adapted to contain respectively the heated parts and the cooling-fins, and causing the air to circulate through these chambers. In the machine shown, the annular partition is composed of parts e inserted between the poles. Reference has been directed by the Comptroller to Specification 17276/15.
Patent GB-387958-A (GB)
Title: A medicinal preparation
IPC: A61K33/06
Filed: 1932-09-14
Abstract: A medicinal preparation, particularly for the treatment of piles, is obtained by heating rock alum in a crucible or kiln at about 106 DEG F. until a scum or efflorescence is formed on the surface of the lumps, removing said efforescence, and powdering the lumps.  During the heat treatment, the mass of the material is reduced by 8-10 per cent; it is believed that the efflorescence contains impurities.  The powder may be taken internally in milk or water, or may be applied externally as a powder or combined with binding or agglutinant means. It may also be dissolved, and applied as a lotion.ALSO:A medicinal preparation, particularly for the treatment of piles, is obtained by heating rock alum in a crucible or kiln at about 106 DEG  F. until a scum or efflorescence is formed on the surface of the lumps, removing said efflorescence, and powdering the lumps.  During the heat treatment, the mass of the material is reduced by 8-10 per cent.; it is believed that the efflorescence contains impurities.  The powder may be taken internally in milk or water, or may be applied externally as a powder or combined with binding or agglutinant means. It may also be dissolved, and applied as a lotion.
Patent GB-437989-A (GB)
Title: Apparatus for testing insulation and dielectric materials for capacitance and dielectric loss
IPC: G01R27/26
Filed: 1934-09-05
Abstract: 437,989. Capacitance and phasedifference measurements. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Sept. 5, 1934, No. 25590. Convention date, Sept. 5, 1933. [Class 37] Bridge apparatus for testing insulation and dielectric loss comprises capacity-resistance arms one of which includes the unknown, and a diagonal in which means are provided for dividing the current therein into components giving a measure of either the capacitance or the loss-angle and dielectric power-factor of the unknown quantity. Parallel diagonal paths may be employed and these are energised through synchronous switches or rectifiers so that currents are produced which have a ninety degrees phase displacement. Alternatively one synchronous switch is employed with an ordinary change-over switch which connects it alternately into phase displaced outputs of a phase-shifter. In one arrangement, the bridge is fed from a transformer T, the diagonal comprising parallel circuits including synchronous vibrating switches G1, G2, supplied from a phase-shifter Ph, the contacts of the switches operating with a mutual phase displacement of 90‹. Change-over switches U are also provided, one connecting either of the synchronous switches in the diagonal, and the other placing the diagonal in parallel with the resistance arm R2. The arm R2 is calibrated in volts and the arm R1 in microfarads, and adjustment of these in relation to maximum and minimum readings of the meter provides the measurements desired. Instead of vibrating switches G1, G2, static contact rectifier circuits such as described in Specification 380,081 may be employed. In a modified circuit, the bridge includes a second transformer permitting the impedances of the standard condenser Cn and resistance R2 being small, and making the power-factor of condenser Cn compensate the phase-angle of the second transformer. In another modification, a single transformer with two secondaries may be employed, the excitation of the switches G1, G2 being effected across the resistance R2 with simple phase displacement means in the circuit of one of the switches.
Patent GB-642511-A (GB)
Title: Improvements in and relating to attachments for tapping holes, screwing up studs andlike operations
IPC: B23B31/38
Filed: 1948-10-01
Abstract: 642,511. Locking nuts. DODD, J. Oct. 1, 1948, No. 25595. Addition to 592,701. [Class 89(i)] [Also in Group XXII] An attachment for tapping holes or screwing-up studs (see Group XXII) comprises a sleeve 13 which is screw-threaded on a casing 2 enclosing a slipping clutch and, in its adjusted position, is locked against rotation on the casing by moving a key 24 of dovetail section along a keyway 25 in the casing into engagement with a recess in the end of the sleeve.