baber/WOPTO huggingface dataset:
Patent GB-385061-A (GB)
Title: Improvements in the manufacture of electric cables
IPC: H01B13/02
Filed: 1931-10-26
Abstract: 385,061. Cables. KLEIN, M., 80, Friedrich Strasse, Berlin. Oct. 26, 1931, No. 29635. [Class 36.] In order that the separate cores or core groups of multicore cables shall be equally stressed as they pass to the twisting machine they are subjected to adjustable braking devices depending on the resistance of the cores to deformation. For this purpose the cores, which are preferably stowed in coils, not on bobbins, pass between rollers 1 .. 4, of which 1 and 2 are fixed, while 3 and 4 are mounted on a disc 5, which can be rotated and adjusted by means of a worm 7 furnished with a handwheel 8 and graduated head. In making cables of long lay the cores are bound together at the crossing. To adjust the brakes a piece of cable is made and untwisted and the lengths of the portions of core compared by hanging them up between points a fixed distance apart and measuring the sags of the different pieces.
Patent GB-627057-A (GB)
Title: Improvements in or relating to circuit arrangements for use in examining and observing electrical waves and variations
IPC: H01J9/04
Filed: 1946-10-04
Abstract: 627,057. Impedance networks. SADIRCARPENTIER. Oct. 4, 1946, No. 29705. Convention date, April 30, 1945. [Class 40 (viii)] A network for introducing variable time delay and altering waveform comprises two delay lines connected to one another by a series of elements, each of which only passes current when the voltage across it exceeds a fixed limit. In the arrangement shown, the delay lines 1 and 6 are linked by a number of rectifiers 14, all biassed by resistances supplied from a battery 17. The wave to be changed is applied at terminals 2 and a source of electric pulses is applied to terminals 3. Neither of these oscillations in themselves can pass elements 14, but at points where their effect is additive current flows to line 6 and either of its terminals are used as output. Triode valves can be used instead of rectifiers 14 and the pulse source may act on their control grids. In the case of signals that have a preliminary pilot pulse, the separate pulse source can be dispensed with and line 1 terminated with a mismatch that reflects back the pilot pulse which is made of considerably greater amplitude than the signal.
Patent GB-667428-A (GB)
Title: Improvements in and relating to an apparatus for electrolytic polishing and/or etching
IPC: C25F7/00
Filed: 1949-11-24
Abstract: 667,428. Electrolytic polishing and etching. WINTERFELDT, E. KNUTH-. Nov. 21, 1949, No. 29770/49. Class 41. Apparatus for preparing metals for metallographic examination by electrolytic polishing and/or etching comprises a stationary chamber 4 provided in its upper wall 20 with an aperture against which is pressed the specimen 25 to be polished, electrolyte being supplied to the chamber by a pump 18 or the like from a detachable container 10 in such a way that pressure is exerted by the liquid against the surface of the specimen at the aperture and at the same time flow of the liquid prevents gasbubbles from charging around the aperture. The liquid is circulated along an overflow channel 21 returning to the container 10 through an opening 22. The wall 20 has an aperture 23 opposite the opening 22. The specimen may not always cover wholly the aperture 23 in which case electrolyte escaping flows along the inclined wall 20 and returns by way of an opening 32 and a guide 33 back to the container 10. The container is detachably held by spring means against the base of a chamber 5 which supports the electrolysis chamber 4. The polishing may be done at a voltage of 45 volts, and subsequent etching, if desired, at 4.5 volts for an extremely short period. The pressure of the pump 18 may be adjusted.
Patent GB-1300688-A (GB)
Title: Improvements in or relating to cross-rolling machines
IPC: B21H1/18
Filed: 1971-06-24
Abstract: 1300688 Rolling MITSUBISHI JUKOGYO KK 24 June 1971 [25 June 1970] 29777/71 Heading B3M The lower roll 1<SP>11</SP> of a cross-rolling machine has a notch 3 for receiving an article Wa after the latter has been formed between the dies 1a of the rolls, the notch being closed at a billet feeding side by a member 10 so that the billet W is supported after the article is cut away from the billet by cutters 1b. The member 10 is either integral with the roll or is a separate member 10<SP>1</SP> which is held to the roll 1<SP>11</SP> by bolts 11. A known roll is shown (Fig. 3) in which the notch 3 extends across the whole width of the roll.
Patent GB-205357-A (GB)
Title: Improvements relating to the fixing of artificial teeth to vulcanite and the like
IPC: A61C13/00
Filed: 1922-10-31
Abstract: 205,357. Presslie, R. A. Oct. 31, 1922. Teeth, artificial.- In an artificial tooth in which attachments to vulcanite or like dentures is obtained by means of a metal backing plate having one or more projections, the plate is secured to the tooth by means of pins which pass through the plate and project rearwardly from the tooth. The plate may be further affixed to the tooth by means of adhesive. The metal plate B formed with stamped-out projections b is secured to the tooth A by pins a which project rearwardly from the tooth and may be bent over, as shown in Fig. 1.
Patent GB-706058-A (GB)
Title: Method of securing shaped pieces of hard metal into carrier bodies by soldering or brazing
IPC: B23K31/02
Filed: 1951-12-20
Abstract: 706,058. Making chisels and percussion drills ; soldered and brazed joints. METRO-CUTANIT, Ltd. Dec. 20, 1951 [June 15, 1951], No. 29902/51. Classes 83 (2) and 83 (4) In securing a hard metal part, e.g. a cutting tip of a chisel or percussion drill in a recess in a carrier body in which it fits with considerable clearance, the part is spaced away from at least two faces of the recess by a distance piece or two or more spaced apart pieces, the or each of which consists of a single wire or narrow strip of thickness corresponding to the clearance of the part to a face of the recess and being of material wettable by soldering or brazing material and conforming in shape to the profile of the part, and the spaces between the part and the faces of the recess is filled with soldering or brazing material. In one embodiment a hard metal two part chisel tip 2 is provided with U-shaped iron wire distance pieces 3 and is secured in a carrier body 1. In a modification two loops of iron wire are provided as distance pieces. A copper or silver base alloy may be employed as may be flux.
Patent GB-536383-A (GB)
Title: Improvements in frequency modulation systems for radio signalling
IPC: H04L12/02
Filed: 1939-11-13
Abstract: 536,383. Frequency modulation. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 13, 1939, No. 29927. Convention date, Nov. 12, 1938, [Class 40 (v)] In a common-wave system of radio communication employing frequency modulation between a group of stations, e.g. ships at sea, one station is enabled to break in on two other inter-communicating stations by sending a call signal which is of a frequency higher than the audio frequencies used for normal inter-communication, and which modulates the carrier more deeply by producing a greater frequency shift Each transmitter is provided with a switch by which the frequency modulator may be connected to a circuit carrying 0-4 kc. currents for normal communication, or to a circuit of say 40 kc. for breaking- in or calling. The 0-4 kc. currents may produce a frequency shift of the carrier of plus and minus 25 kc., while the call current may shift the frequency plus and minus 64 kc. The receiving circuit of each station comprises a frequency-reducing stage 14, a filter 16 which attenuates frequencies removed more than 25 kc. from the reduced frequency, an amplitude limiter 17 and a frequency-modulation detector 18. Audio currents pass to an amplifier 19 and speaker 20, whilst the calling current passes through filter 21 and amplifier 22 and rectifier 23 to a call lamp or other indicator 25. The Specification shows by analysis that although the call signal may be weak, due to its transmission from a remote station, it will effectively break in if its frequency is high and the frequency shift of the carrier is also high. In a modification, the filter 16 is modified so that it readily transmits currents of 25 kc. above and below the intermediate frequency, and greatly attenuates frequencies outside the range, but transmits efficiently in the neighbourhood of 40 kc. on either side of the intermediate frequency.
Patent GB-985958-A (GB)
Title: Refrigeration apparatus
IPC: F25B15/06
Filed: 1963-07-29
Abstract: 985,958. Refrigerating. WORTHINGTON CORPORATION. July 29, 1963 [Oct. 1, 1962], No. 29930/63. Heading F4H. In a vacuum type continuous cycle absorption refrigerating system having a low pressure chamber 13 and a higher pressure chamber 14, the absorber 21 is disposed above the generator 38 and is directly connected to the latter via a conduit 28<SP>1</SP>, 40. The absorber 21 has a sump 25 from which weak solution is withdrawn through line 28 by a pump 17 and recirculated to the absorber through line 30 and spray nozzles 31. The sump also contains a tubular overflow device 36 which communicates with conduit 28<SP>1</SP> and has V-notches arranged to provide an increase in the rate of flow of weak solution through conduit 28<SP>1</SP> when the liquid level in sump 25 rises. An injector 54 is connected between the discharge and suction sides of the pump 17 and serves to draw strong solution from the generator into the absorbent circulating conduit 28 through lines 52 and 52<SP>1</SP> when the liquid level in the generator is above that of the end 51 of conduit 52. The generator is heated by a steam coil 46 having a valve 45 in its outlet line 48 which valve is controlled by an element sensitive to the temperature of a medium which has been cooled in a coil 79 disposed in the evaporator 22. Thus, as the load on the system increases the heat input to the generator is increased and the increased rate of boiling therein causes strong solution to flow into the end 51 of conduit 52 and be supplied to the evaporator via injector 54 and pump 17. A liquid heat exchanger 19 is provided for conduits 28<SP>1</SP>, 40 and 52, 52<SP>1</SP> and in the embodiment of Fig. 2 (not shown) heat exchanger 19 is in physical contact with the shell of chamber 14. In the embodiment of Fig. 4 (not shown) the absorber and evaporator are housed in an upper cylindrical shell and the condenser, generator and liquid heat exchanger are housed in a lower rectangular shell.
Patent GB-441723-A (GB)
Title: Improvements in and relating to protective systems for electric circuits
IPC: H02H3/247
Filed: 1934-10-19
Abstract: 441,723. Protective cut-out systems. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Oct. 19, 1934, No. 29985. Convention date, Oct. 19, 1933. [Class 38 (v)] Electromagnetic switches; retarding - devices. -In an undervoltage protection arrangement for apparatus 12 controlled by a contactor 14, the coil of the latter is energized from the A.C. supply 10, 11 over a " start " button 16, and a maintaining circuit is made by closure of shunting contacts by an armature 19, the coil 20 of which is energized over a full-wave rectifier 23 by closure of back contacts 26. A " stop " button 28 causes instant de-energization of coil 20 and opening of the contactor, but it is not desirable that the relay should open the holding circuit for a momentary lowering of voltage to, say, 50 per cent, or lower, of normal. Accordingly the amount of magnetizable material in the relay is made much greater than is required for operating the armature against spring bias and the magnetic circuit is substantially closed by the armature, so that when, on undervoltage, the contactor opens contacts 26, the closed circuit through the rectifier 23 causes the flux in the relay to decay slowly, delays of from one to 10 seconds being possible. Restoration of voltage to above, say, 80 per cent of normal value during this delay causes automatic reclosure of the contactor. In a modification, Fig. 2 (not shown), a single rectifier is included in the circuit of coil 20 and a further rectifier shunts the coil and " stop " button to provide the closed circuit. In Fig. 3, the relay coil 41 is energized over back contacts 44 by means of " start button 46, and when 14 closes, a maintaining circuit is made over an economy resistance 58, back contacts 45, and connection 62. If 14 opens due to undervoltage, the holding circuit of 41 opens at 45, and the resulting decay of flux in the relay generates a current in the closed circuit containing the coil 40, so providing the delay. In Fig. 4 (not shown), the relay armature not only makes the operating circuit of the contactor but also the closed circuit of the first of two relay coils, which are energized in series to operate the armature whereas the second serves as the holding coil. For manual opening, a "stop " button connects the first in opposition to the second and, as it has more turns, it overcomes the latter and the armature is released.
Patent GB-465922-A (GB)
Title: Improvements in and relating to the moulding of asbestos-cement articles
IPC: B28B1/52
Filed: 1935-10-18
Abstract: 465,922. Moulding asbestos cement. BROWN, T. F. K., CHICK, H. E., and GREEN, L. G. Oct. 18, 1935, No. 30035/34. [Class 87 (ii)] Asbestos cement articles such as cisterns, tubes, tiles &c., are formed in a perforated mould 1 from a aqueous mixture which is shaped in the mould and has moisture discharged from it by pressure from a mandrel 10 which is inflated by air introduced between the mandrel and a stationary core 12. The mould 1 may be made of a number of plates held together by bolts 9. The sides and bottom have a water-pervious liner 5 of paper, wire or textile fabric which may if desired have an inner lining of paper &c., which adheres to the moulded article and is subsequently stripped off. The mandrel 10 comprises a rectangular rubber bag having an air valve 11 and the core 12 may be solid or hollow. The material is preferably mixed in the dry state and then has water added. A suitable mixture consists of 8 1b. of cement, 1 lb. of asbestos and 4 points of water. When moulding tubes, the perforated end plates may also apply pressure.
Patent GB-1344484-A (GB)
Title: Magnetic core memory line sink voltage stabilization system
IPC: G11C11/06
Filed: 1971-06-28
Abstract: 1344484 Magnetic storage arrangements ELECTRONIC MEMORIES & MAGNETICS CORP 28 June 1971 [29 June 1970] 30215/71 Heading H3B In a magnetic core store in which a group of drive lines 10, Fig. 1, are joined at their sink ends to a common point 12, and are charged from a current pulse source 14 prior to applying a driving pulse to the drive end of a selected line from a current pulse source 13, the charged potential in the lines is maintained by additionally coupling the driving pulse through a transformer T1 to a characteristic impedance 17 associated with the common point. As shown the pulse source 14 is connected to the common point 12 by closing transistor switch Q2 and opening switch Q3, and the common point potential rises to a value +V limited by a diode D4. Pulse source 13 is energized after closure of a transistor switch Q1 and passes a current pulse through the selected line. This pulse is also coupled to a characteristic impedance resistor 17 through a transformer T1 and a diode D5 to maintain the common point 12 at the charged potential as current passes through the selected drive line. A shunt circuit comprising resistor 18 and diode D6 absorbs energy from the transformer after the pulse ceases. In a modification, Fig. 3 (not shown) the characteristic impedance 17 is connected directly to the collector of transistor Q2.
Patent GB-1378840-A (GB)
Title: Slidebar for a pusher furnace
IPC: F27D3/02
Filed: 1973-06-26
Abstract: 1378840 Skid rails for furnaces STAHLWERKE PEINE-SALZGITTER AG 26 June 1973 [26 June 1972] 30265/73 Heading F4B A slidebar for a pusher furnace comprises a cooled tube 1 formed with a longitudinallyextending mounting fin 2 upon which the slideway sections viz. caps 3 are adapted to be mounted by semi-cylindrical bulges 5 in the cap which are received within co-operating recesses 4 having large notch radii within the length of a slideway section so as to provide a maximum surface of engagement and optimum resistance to shear. Limiting dimensional values of the recesses are given.
Patent GB-1314213-A (GB)
Title: Process for the concentration of non-ferrous minerals
IPC: C22B23/02
Filed: 1970-06-23
Abstract: 1314213 Concentrating non-ferrous metals INTERNATIONAL NICKEL CO OF CANADA Ltd 23 June 1970 [23 June 1969] 30414/70 Heading C1A Sulphide, selenide, arsenide and telluride minerals of non-ferrous metals are concentrated by slurrying with at least an equal wt. of pyrrhotite, heating to 150-185 C. under a part pressure of O 2  of # 5 ats., at pH < 3, to oxidize pyrrhotite to Fe 2 O 3  and molten S which coats and collects the mineral, which is then separated from the slurry. The metal may be Ni, Cu, or Co and precious metals are also recovered in the concentrate. The pyrrhotite may be nickeli ferrous, and the slurry preferably contains 30-50% solids. The solids are preferably ground so that at least 50% passes a 325 mesh sieve (TSS) and not more than 15% is retained on 100 mesh. The product may be separated from the slurry by screening, followed by heating to remove S as liquid or vapour, or by solvent extraction. The slurry remaining after screening may be treated with H 2 S to recover metal sulphides, the resulting liquor being recycled.
Patent GB-229270-A (GB)
Title: Improvements in or connected with edge filters or like apparatus
IPC: B01D29/44
Filed: 1924-12-18
Abstract: 229,270. Aktiebolaget Separator, and Forsberg, E. A. Feb. 13, 1924, [Convention date]. Filters having sheet filtering-materials.-Matter deposited during filtration on the outside of hollow filter elements C, which may be of the edgefilter or other type, is removed by means of a scraping device D which is moved longitudinally by a handle E. The scraper D is a disc with holes of a diameter slightly larger than the elements C, the metal round the holes being bent outwards. The scraping may be done with the elements in position, the end plate F being removed, or the elements may be removed from the casing with the cover and scraped elsewhere. Guide rods G may be provided, and the stem of the handle may be telescopic. Reference is made to an arrangement in which groups of elements are secured to each filter cover, each group being provided with its scraping device.
Patent GB-978298-A (GB)
Title: N-substituted nitrofurantoin derivatives
IPC: C07D405/10
Filed: 1962-08-09
Abstract: The invention comprises compounds of formula <FORM:0978298/C1/1> (wherein R is alkyl (C1-C10), hydroxyalkyl (C1-C3), alkenyl (up to C8), cyclo alkyl (C3-C8), cycloalkyl alkyl (C4-C9), unsubstituted or ring substituted aralkyl or diarylalkyl (C7-C13), thenyl, furfuryl, unsubstituted or ring substituted aryl (C6-C10), thienyl, or furyl and therapeutic compositions containing them together with a pharmaceutically acceptable carrier. The compounds are prepared by condensing, in the presence of hydrogen halide acceptor, chloroformate esters of formula Cl.CO.OR with 1-(5-nitro -2- furfurylideneanimo)hydantoin.  The therapeutic compositions, which have antimicrobial activity, may take the form of tablets, capsules, lozenges, troches, hard candies, aqueous suspensions, elixirs and syrups.
Patent GB-1483023-A (GB)
Title: Coherent semiconductor injection laser array
IPC: H01S5/00
Filed: 1975-07-22
Abstract: 1483023 Lasers INTERNATIONAL BUSINESS MACHINES CORP 22 July 1975 [14 Aug 1974] 30552/75 Heading H1C A multiple element laser array 2, particularly two GaAs laser diodes 4, 6 combined in a single structure, is positioned symmetrically with respect to the optical axis 8 of a resonator formed by hemispherical lenses 10, 12, a fully reflective mirror 16 and a partially reflecting output mirror 18, a spatial filter 14 being located adjacent mirror 16 in the Fourier plane of the focused emission from the array for selecting only the TEM 00  mode of the generated radiation. Since the laser elements are off-axis, a ring laser is formed by each pair of elements, such as diodes 4, 6, positioned symmetrically of the optical axis 8. To form a spatial coherent beam the filter 14 is such as to determine the transverse field distribution of the elements and select either the phase controlled or the free running mode obtainable. The Specification contains a mathematical analysis based on Fourier transforms for determining the filter dimensions and character. For the free running mode in which the relative phase of the two ring laser waves travelling in opposite directions varies randomly, the spatial filter is in the form of a single narrow slit, (e.g. 150 Á width). A phase controlled mode (# = 0 or #) may be obtained by the filter selecting a predetermined phase relation between the emission field of the two laser diodes, the slit being generally narrower in this case (e.g. 90 Á for #=#, 50 Á for #=0). Although a single slit may be used for the #= 0 mode a three slit structure is theoretically required. Externally of the mirror 18 the ellipticity of the laser beam is corrected by a cylindrical lens (not shown).
Patent GB-840755-A (GB)
Title: Improvements relating to doors, particularly spring-controlled glass doors
IPC: E06B3/02
Filed: 1957-10-02
Abstract: 840,755. Doors. NEWMAN & SONS Ltd., W., and ROLLASON, S. A. Aug. 25, 1958 [Oct. 2, 1957], No. 30777/57. Class 20(3) [Also in Group XXV] A door, especially a glass door controlled by a floor spring, has an edging rail 3 of H-section, the upper channel embracing the lower edge of the door and the lower channel having downwardly diverging sides between which fits the correspondingly shaped end 2 of the floor spring spindle. The rail is preferably a brass or bronze extrusion and a steel liner 10 may be provided. The rail is secured to the door by cement 7 and has integral inwardly directed flanges 8. For a wooden door the rail may comprise only the lower channel shown together with an integral attachment flange.
Patent GB-691805-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N3/24
Filed: 1950-12-18
Abstract: 691,805. Television. GENERAL ELECTRIC CO., Ltd., and BIGGS, A. J. Nov. 8, 1951 [Dec. 18, 1950], No. 30782/50. Class 40 (iii). In a cathode-ray tube television receiver in which the fly-back stroke E, Fig. 1b, ends after the end of the corresponding line synchronizing pulse D, Fig. 1a, a voltage is derived during the fly-back stroke and applied to the cathode-ray tube so as to prevent the occurrence of any spurious elements in the picture due to overshoot in the trailing edge of the synchronizing pulse. As shown in Fig. 2, the video amplifier 4 feeds the cathode of the cathode-ray tube 5 and also feeds a separator circuit 8 to derive the line synchronizing pulses D to control the line time base 9. The grid of the cathode-ray tube receives bias from a source 7 and is also connected through a resistance 12 of the order of one megohm so as to receive the potential developed across deflector coils 11. During the scanning stroke I the developed voltage is small but during the fly-back stroke E the voltage reverses in polarity and becomes of sufficient magnitude to suppress the effect of any overshoot in the trailing edge of the synchronizing pulse. In receivers employing electrostatic deflection such a voltage may be derived by differentiation of the output of the line time base.