baber/WOPTO huggingface dataset:
Patent GB-1215893-A (GB)
Title: Method and apparatus for automatic measurements of corona inception and extinction voltages
IPC: G01R31/58
Filed: 1968-03-29
Abstract: 1,215,893. Testing insulated cables. GENERAL CABLE CORP. March 29, 1968 [July 10, 1967], No.15194/68. Heading G1U. In a method of testing corona inception (or extinction) voltage in an insulated power cable 10, an alternating test signal of steadily increasing (or decreasing) amplitude (from a source 26) is applied to the cable, the first and third quarter cycles of the test voltage being sampled for a corona discharge signal, the voltage of the test signal at which corona occurs being measured only when the corona discharge appears or disappears on each of a predetermined number of consecutive half cycles of the test signal. True corona should appear as a signal in the same position in successive half cycles of the waveform of the applied signal particularly in the first and third quadrants. The waveform is therefore examined for corona by a system 26 at the same position in each of e.g. five successive half cycles, and only if apparent corona is detected in each of these is true corona regarded as having occurred, as distinct from noise. As soon as true corona is detected, as the amplitude of the applied signal increases, a gate 114 is opened to pass the applied signal (appearing at point 50) to a voltmeter 116, to record the corona inception voltage. A signal related to apparent corona is developed at the point 58 by a filter and amplifier system 40- 46. The apparent corona discharge signal at 58 is passed to a gate 62, which is controlled to open by the generator 64 at the same time in each half cycle of the input, and thence to a comparator 72, which passes signals above a certain level, thus allowing the sensitivity of the system to be adjusted Thereafter the signal is applied in successive half cylces of the input to a series of flip-flops 88-96 which contains bi-stables designed to change state for 2¢, 2, 1¢, 1 and ¢ a cycle respectively. These gates 98-106 in a series chain for these periods respectively, so that if a corona signal does appear in each successive half cycle, a signal from a supply 108 will pass to operate a flip-flop 112 and open the gate 114. For measuring extinction voltage the system is designed so that the flip-flop 112 operates in reverse manner.
Patent GB-1481397-A (GB)
Title: Photo polymerisable compositions
IPC: G03F7/027
Filed: 1975-04-14
Abstract: 1481397 Photo-sensitive materials E I DU PONT DE NEMOURS & CO 14 April 1975 15260/75 Addition to 1453681 Heading G2C [Also in Division C3] Photopolymerizable compositions, suitable for making negative images by application to a substrate followed by exposure and development, comprise (i) at least one non-gaseous ethylenically unsaturated monomer, (ii) an organic lightsensitive free-radical generating system, and (iii) an aromatic nitroso dimer, which is defined as  being a compound in which, or in the monomer form of which, at least one nitrogen atom is attached to either a 6-membered aromatic ring or the beta-carbon atom of a vinyl or substituted vinyl group attached to a 6-membered aromatic ring. The nitroso compound is a polymerization inhibitor in monomeric form but not in dimeric form. Suitable dimers are formulated. In Examples such dimers are used in polymerizable compositions comprising trimethylolpropane triacrylate as monomer, polymethyl methacrylate as binder, a sensitizing system comprising a mixture of 2-o-chlorophenyl-4, 5-diphenylimidazolyl dimer, Michler's ketone and tris(4-diathylamino-2-methylphenyl) methane, and other conventional additives. These compositions are coated on to copper-clad circuit boards from solution, the coatings top-coated with a solution of polyvinyl alcohol, and the boards exposed and developed.
Patent GB-977335-A (GB)
Title: Microwave modulation circuit arrangement for producing a carrier wave and a single sideband
Inventor: JAMES ROBERT JOHN
IPC: H03C7/02
Filed: 1961-04-27
Abstract: 977,335. Amplitude modulation systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 26, 1962 [April 27, 1961], No. 15291/61. Heading H3R. In a microwave carrier and single sideband generator, carrier is applied through a 3db. coupler 10 equally with 90 degrees phase difference to waveguides comprising modulators 11, 12 fed with identical modulation signals 90 degrees out of phase so that the upper (or lower) sidebands of the modulator outputs are in phase and the lower (or upper) sidebands in anti-phase. If the output of modulator 12 is phase shifted at 18 by + 90 degrees and the two pairs additively combined by a 3db. coupler 17 producing a 90 degrees phase lag of the input from modulator 12, then only the lower sideband is produced and applied through a 10db. coupler 5 to the output B (and the upper sidebands suppressed). Further, all unmodulated carrier output from modulators 11, 12 is by-passed by polarization sensitive side arms 13, 14 to a 3db. coupler 21 which additively combines the two 90 degrees out of phase carrier inputs and wholly directs the unmodulated carrier to output B. The carrier inputs to modulators 11, 12 may be maintained 90 degrees out of phase by a variable phase shifter 19 automatically controlled as in Specification 970,728 by detecting relative phase variations in the side arms 13, 14, sample outputs being taken by 40db. couplers 23, 24.
Patent GB-436435-A (GB)
Title: Multiple spinning nozzle for the spinning of artificial silk
IPC: D01D4/02
Filed: 1935-05-27
Abstract: <PICT:0436435/IV/1> In a multiple spinning-nozzle for the spinning of artificial silk having the bores arranged in two or more groups corresponding to the number of threads it is intended to form, the said groups F, F<1> are located in different planes forming an angle a  with each other.  The separation of the different threads formed by this one nozzle is thereby facilitated.  The nozzle may be used either in the wet or the dry spinning process.
Patent GB-1425792-A (GB)
Title: Hydrolysis of aromatic dinitriles
IPC: C07C63/00
Filed: 1974-04-08
Abstract: 1425792 Hydrolysis of aromatic dinitriles SUN VENTURES Inc 8 April 1974 [12 April 1973] 15489/74 Heading C2C A process for the preparation of an aromatic dicarboxylic acid comprises subjecting an aromatic dinitrile to an aqueous hydrolysis in a closed reactor at 200 to 300 C. until a hydrolysis equilibrium is obtained, venting the closed system to remove more than 50% of available ammonia, adjusting the vented system to a molality of the aromatic acid product from 1À5 to 2À5, saturating the system with carbon dioxide and isolating the precipitated aromatic dicarboxylic acid by separation under CO 2  pressure of 50 to 900 p.s.i.g.
Patent GB-111503-A (GB)
Title: Improvements in or relating to Steam Turbines.
Inventor: BAUMANN KARL
IPC: F01D1/16
Filed: 1916-10-31
Abstract: 111,503. Baumann, K. Oct. 31, 1916. Drawings to Specification. Addition to 14053/15. Axial-flow type; exhaust, disposing of.-The multiple-tier blades of the multiple-exhaust turbine described in the parent Specification are so designed that the segregated annular portions of steam flowing through the inner tiers expand at approximately the same rate as or at a greater rate than the portions flowing through the outer tiers. The exit angles of the blades in an inner tier are made the same as or greater than the exit angles of the blades in an outer tier. Where the exit angles are the same, the circumferential dividing walls may be omitted either in the fixed or tho moving blades, or in both; where they differ, these walls are retained, though they may in some cases be dispensed with in the moving blades.
Patent GB-280129-A (GB)
Title: Improvements in the manufacture of paving tiles
IPC: B28B7/36
Filed: 1927-06-10
Abstract: 280,129. Thomas, N. June 10, 1927. Moulds; processes. - Moulds for concrete &c. paving tiles are lined at the base with a, sheet of oiled paper which crinkles irregularly through contact with the wet materials and so produces a slightly undulated surface to the tile which renders it non-slippery. The soaking of the paper in oil permits its ready removal from the finished tile.
Patent GB-776584-A (GB)
Title: Method of producing aluminium sheets
Inventor: BRENNER PAUL
IPC: C22C21/00
Filed: 1955-05-31
Abstract: Pure Al containing 0.0001-0.2 per cent B is used, in the form of bars produced by continuous casting, for the production of sheets by hot or cold deformation which are further converted by deep drawing or stamping into hollow bodies.  The Al may contain, in addition to B, one or more of Ti, Zr, Nb, V and Cr in such amounts that the total content of these elements together with B is 0.005-0.2 per cent.
Patent GB-443550-A (GB)
Title: Improvements in power-driven vehicles, more particularly locomotives and engine-driven carriages
IPC: B61C9/14
Filed: 1934-05-25
Abstract: 443,550. Locomotive and vehicle driving-gear. HENSCHEL & SOHN AKT.- GES., 2, Henschelstrasse, Kassel, Germany. May 25, 1934, No. 15689. Void [Abridged as open to inspection under Sect. 91 of the Acts, Dec. 13, 1934]. [Classes 79 (ii) and 79 (iii)] A locomotive or vehicle is driven by a plurality of driving sets, each set comprising an engine a, an hydraulic gear c, a free-wheel clutch g and a reversing gear e. The engines may all drive on one axle as shown, or they may each drive a separate axle. Two engine sets may be arranged to drive one reversing gear.
Patent GB-401219-A (GB)
Title: Brake operating mechanism particularly applicable to double hand-brakes of cycles
IPC: B62L3/02
Filed: 1933-05-31
Abstract: 401,219. Cycle brakes. NAAMLOOZE VENNOOTSCHAP EERSTE NEDERLANDSCHE RIJWIEL- & MACHINEFABRIEK VOORHEEN H. BURGERS, Deventer, Holland. May 31, 1933, No. 15698. [Class 136 (i).] In cycle brake mechanism in which the front and rear wheel brakes are operated by separate hand levers, the application of the front wheel brake before the rear wheel brake is prevented by locking-mechanism which is controlled by the rear-brake operating-mechanism and is adapted to lock the front-brake operating-mechanism until released by the operation of the rear brake. To the roller lever 7 for operating the front brake is fixed a pawl 11, which is pivoted to the front brake transmission rod 15 and is normally engaged by the hook-shaped end 30 of a plate spring 21, whereby the lever 7 is locked. A roller lever 16 for operating the rear brake has fixed to it a lever 18, which is pivoted to the rear brake transmission rod 15a and is adapted, when the lever 16 is actuated, to raise the spring 21, thus releasing the lever 7 and allowing its subsequent operation. The inner ends of the levers 7, 16 abut, whereby the levers can have relative rotation, but are prevented from sliding in their bearings 8. Springs 10, 17 return the levers to the normal position.
Patent GB-553692-A (GB)
Title: Improvements in or relating to bearing mountings
IPC: F16C27/06
Filed: 1942-11-06
Abstract: 553,692. Bearings. HOFFMANN MANUFACTURING CO., Ltd. Nov. 6, 1942, No. 15698. Convention date, June 16. [Class 12 (i)] A mounting for a ball-bearing comprises an outer race ring 21, Fig. 1, secured within a housing 13 by a locking device 18, a rubber layer 26 being interposed between ring 21 and device 18 and of such depth as to absorb loads greater than normal, so that indenting of the races 21, 22 is prevented. The layer 26 of rubber or synthetic rubber may be provided with faces producing sufficient friction to prevent rotation of the ring 21 and these faces may consist of shims 34a, Fig. 3, of synthetic rubber which may be loose or be vulcanized to the layer 26. The contracting faces may be very highly polished to exclude air and cause adherence or friction. The surfaces of the ring 21 and layer 26 may be interfitting, as by tongue-and-groove connection or by ridges 61, Fig. 11, on the layer engaging grooves 6 in the ring, inclined surfaces 62, 63 being also provided. Where shims are provided, they follow the contour of the rubber layer. The invention is shown in Fig. 1 applied to a wheel 10 of a roller skate.
Patent GB-570881-A (GB)
Title: An improved process of and means for neutralising spent acid liquors
IPC: B01J19/00
Filed: 1943-09-24
Abstract: 570,881. Treating waste liquors. SWINDIN, N. Sept. 24, 1943, No. 15721. [Class 111] In process for the continuous neutralization of spent acid liquors, as for example waste acid pickle liquors, the acid from a tank 8 is led to the contracted base of a relatively deep vessel A, where it commingles with the neutralizing agent, for example lime slurry, fed from a tank 12 through a pipe 13. Valves 10, 14 control the flow of acid and slurry. The neutralized effluent passes over a weir 7 provided with a measuring device such as a- V-notch plate, or a tilting bucket. The precipitated salts are removed by an air lift pump 16 or other suitable pump.
Patent GB-199725-A (GB)
Title: Improvements in radiators for heating buildings
IPC: F28D1/03
Filed: 1923-06-18
Abstract: 199,725. Courtot, L. June 24, 1922, [Convention date]. Radiators.-Each section of a radiator for heating building is built up of a number of thin tubes 1 of small diameter connected between two annular chambers 2 and bent near their extremities so as to terminates in a direction perpendicular to the chambers, each section being formed in one piece, preferably by electrolytic deposition upon a fusible core. The annular chambers are flanged outwardly at 6, and adjacent chambers are connected by means of external rings 8 and internal apertured sleeves 4 which abut against ribs 9 formed on the internal surfaces of the rings 8. Tubular cross-braces 3 may connect the tubes 1, while the chambers 2 may be further strengthened and supported by a number of internal rods 7 which, when the sections are formed electrolytically, may be inserted in position toegther with the sleeves 4 during the casting of the fusible core.
Patent GB-1210058-A (GB)
Title: Improvements relating to the priming of pumps
Inventor: SAUNDERS DAVID JOHN
IPC: F04D9/06
Filed: 1969-03-26
Abstract: 1,210,058. Priming centrifugal pumps. H.J. GODWIN Ltd. March 26, 1969, No.15906/69. Addition to 1,157,767. Heading F1C. A pump assembly as claimed in the parent Specification, comprising a pump having an inlet duct and an outlet duct between which liquid may be pumped, a vent passage which communicates directly with the inlet duct and through which air may be withdrawn from the inlet duct, a non-return valve in the outlet duct to prevent air from being drawn therethrough in a direction towards the pump, and means for passing air under pressure through the vent passage so as to cause air from the inlet duct to be entrained therewith, whereby to effect withdrawal of air from the inlet duct and consequent priming of the pump, is additionally provided with means for cutting off or reducing the quantity of air under pressure supplied to the vent passage whenever the pump is primed. The additional means comprises a valve actuated by a diaphragm exposed, either directly or via a restrictor, to the pressure in the outlet duct. When the pressure in the outlet duct rises on completion of priming, the diaphragm closes the valve if the latter is located between the source of pressure air and the vent passage or opens the valve if the latter is located in a by-pass passage leading from the source of pressure air to atmosphere.
Patent GB-668189-A (GB)
Title: Improvements in journal lubricators
IPC: F16N7/12
Filed: 1949-06-15
Abstract: 668,189. Lubricators. MILLER, G. D. June 15, 1949 [Aug. 11, 1948], No. 15952/49. Class 12 (iii). A journal lubricator as for electric motor and Diesel engine bearings comprises a casing 10<SP>1</SP>, one or more pairs of arms 15<SP>1</SP> each pivotally mounted at one end as by a pivot rod 241, ears 161 and a plate 14<SP>1</SP> on the casing, a plurality of felt pads 35, one or more being secured between each pair of arms at the other end thereof and having wicks 37 depending into an oil sump in the casing, and springs 23 to urge the pads 35 into contact with the journal surface through a window in the bearing. In the embodiment shown, each pad is enclosed in a case 36 which is flared outwardly at its upper end and which is pivoted about a pin 35<SP>1</SP>. The torsion spring 23 is so designed that if one half 26, Fig. 3, fractures the other, 27 remains operative. In other embodiments the pads are not pivoted to the arms, and pins through the ears and arms limit the arm and pad movement respectively. The pads are so cut that the ends of the fibres are presented to the journal.
Patent GB-401610-A (GB)
Title: Improvements in or relating to acoustic signalling systems
IPC: G08B3/10
Filed: 1933-06-02
Abstract: 401,610. Audible signalling-apparatus. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN, 30, Croeselaan, Utrecht, Holland. June 2, 1933, No. 15963. Convention date, July 13, 1932. Addition to 389,003. Drawings to Specification. [Classes 40 (i) and 118 (ii).] The acoustic signalling system described in the parent Specification and comprising an electromagnetic sound emitter operated by alternating current and arranged in a circuit having a resistance which suppresses sparking at the control switch contacts in addition to effecting the equalization of the load on the supply network during the non-signalling intervals, is modified by the provision of a reactance or impedance instead of the resistance. The reactance or impedance may be used solely for the purpose of spark suppression in a system wherein the supply is effected through a static transformer and load equalization is unnecessary.
Patent GB-233193-A (GB)
Title: Improvements in toys
IPC: A63H27/10
Filed: 1924-07-03
Abstract: 233,193. Biaz, P. July 3, 1924. Inflatable toys.-A toy comprises a tube 1 having at one end a confection 3 and at the other a balloon 2 and sound-emitting device 4.
Patent GB-379704-A (GB)
Title: Improvements in or appertaining to the manufacture of electric cables
IPC: H01B13/30
Filed: 1931-06-02
Abstract: 379,704. Impregnating cables. STANDARD TELEPHONES & CABLES, Ltd., SCOTT, T. R., and WEBB, J. K., Connaught House, Aldwych, London. June 2, 1931, No. 16068. Drawings to Specification. [Class 36.] Impregnation of a high-tension sheathed cable is accelerated by decreasing the effective length of the cable by tapping the sheath. The temperature and pressure of impregnation may be controlled, and the cable may, before oil is introduced, be swept with a vapour condensible to liquid or solid at normal cable temperature. When the impregnating compound has a melting point higher than the normal service temperature of the cable, one component, e.g. wax or jelly, may be applied to the paper before the cable is insulated, the other component, e.g. oil, being applied after sheathing of the cable. In operation, the cable is tapped at one or more points, the sheath being slightly distended at the mouth of the tapping tube. Vaporizable material, such as methyl naphthalene, in containers with fusible portions may be introduced in the cable before sheathing. To increase the rate of impregnation, the temperature of the cable may be controlled by conductor heating or by control of the temperature of the sheath at various sections along the length. Electric heating is preferably used, by means of an asbestos tape containing the heating elements. The tape may be applied as a helical lapping to the cable sheath. Impregnation may be accelerated by increasing the pressure of the oil feed, the excess pressure being counterbalanced by increasing the pressure of a fluid in which the cable is immersed. The rate of cooling of the cable after impregnation may be increased by temperature control, the sheath being cooled before the core and the centre sections before the end sections. Specification 339,990, [Class 36, Electricity, Conducting &c.], is referred to.
Patent GB-582676-A (GB)
Title: Improvements in or relating to boxes with automatically-opening lids
IPC: B65D5/66
Filed: 1944-08-23
Abstract: 582,676. Boxes. KARPELES, O. Aug. 23, 1944, No. 16092. [Class 18] A box 11 is provided with a hinged lid 22 and a slide 27 interconnected so that operation of the slide raises the lid. The hinge 23, arranged transversely between two walls 13 and 14 of the box, is positioned near one edge of the lid so that a narrow strip of the lid overhangs the hinge, and the slide 22 is mounted in the bottom of the box so as to extend through the front wall 15 and has a strip of fabric or other flexible material connected to it and to the narrow strip of the lid so that when the slide is pulled out the lid is raised. The slide may also form a clasp 30 for securing the lid in a closed position. In one arrangement, an inner container 12 is secured within a casing 11 so as to provide a space between the rear walls 20 and 16. The lid is hingedly supported upon the rear wall 20 of the inner container, by means of a fabric strip 23, and the slide 27 is mounted between the bottom 24 of the inner container and the base 25 of the casing. A mirror may be provided in the lid 22.
Patent GB-982901-A (GB)
Title: Lids for milk containers
Inventor: KINGSTON JONAS ARTHUR COLLINS
IPC: A01J5/04
Filed: 1962-04-27
Abstract: 982,901. Lids. GASCOIGNES (READING) Ltd. April 26, 1963 [April 27, 19621, No. 16098/62. Heading F2P. In a lid for a pail or similar milk container comprising a handled body 1 having a depending spigot 3, at least the spigot and adjacent underside of the lid is made of natural or synthetic rubber or a plastics material having a degree of softness such as will ensure that the spigot and underside of the lid make an air-tight joint directly with the mouth and rim of the container without the use of a separate gasket. As shown, the moulded lid has apertures 14 for the reception of the inturned ends 13 of the metal handle 12 and the latter has a hook 19 for supporting a pipe-line. A recess 8 accommodates a pulsator.
Patent GB-487282-A (GB)
Title: Improvements in or relating to high frequency transmitting arrangements
IPC: H01Q5/00
Filed: 1937-06-10
Abstract: 487,282. Wireless transmitting systems. MARCONI'S WIRELESS TELE. GRAPH CO., Ltd. June 10, 1937, No. 16152. Convention date, June 30, 1936. [Classes 40 (iii) and 40 (v)] In a system in which two or more sources of different frequency are fed to a common load, means are provided in each connection for permitting flow of its own energy to the load and for preventing flow of other frequencies back towards the associated source. The system is described for feeding carrier waves modulated respectively by voice and video frequencies to a common transmission line and aerial. In the drawings Tl and T2 are the sources, TL the common transmission line and A the aerial. The means referred to above may comprise suitable-dimensioned, closed or open, two-conductor line sections as indicated at d1 and d2, Fig. 1, or may be combinations of reactances as indicated at d<1>1, d<1>2, Fig. 2. Impedance matching of the antenna system and line TL is obtained by elements m, n dimensioned as set forth in Specification 478,211. Suitable dimensions for the elements where two and three frequencies are fed to the common line are set out in the Specification. Specification 457,911 also is referred to.