baber/WOPTO huggingface dataset:
Patent GB-413905-A (GB)
Title: Improvements in and relating to electrical insulating material
IPC: C04B35/03
Filed: 1933-10-11
Abstract: Magnesium oxide which has been fused by heating to a high temperature such as 5000 DEG  F. and then crushed or ground is reheated for about 6 hours at about 2100 DEG  F. to increase its electrical resistivity and its stability in the presence of moisture.  The heating is preferably gradual, the fused oxide being heated up from room temperature to 2100 DEG  F. in about 30 to 40 hours, kept at this temperature for about 6 hours, and then allowed to cool for 30 to 40 hours or more until it attains room temperature.  The heating operation may be carried out in a reducing or an oxidizing atmosphere, the latter being preferred if the oxide contains impurities such as iron or carbon.  The treated oxide may be used as the insulating medium between the conductor and the metallic sheath in electric heaters.  Specification 144,767, [Class 37], is referred to.ALSO:Magnesium oxide which has been fused by heating to a high temperature such as 5000 DEG  F. and then crushed or ground is reheated for about 6 hours at about 2100 DEG  F. to increase its electrical resistivity and its stability in the presence of moisture. The heating is preferably gradual, the fused oxide being heated up from room temperature to 2100 DEG  F. in about 30 to 40 hours, kept at this temperature for about 6 hours, and then allowed to cool for 30 or 40 hours or more until it attains room temperature.  The heating operation may be carried out in a reducing or an oxidizing atmosphere, the latter being preferred if the oxide contains impurities such as iron or carbon.  The treated oxide may be used as the insulating medium between the conductor and the metallic sheath in electric heaters. Specification 144,767, [Class 37], is referred to.
Patent GB-744139-A (GB)
Title: Improvements in draught excluding devices
IPC: E06B7/20
Filed: 1952-11-10
Abstract: 744,139. Draught excluders. CLAY, J. L. Feb. 9, 1954 [Nov. 10, 1952], No. 28214/52. Class 20(3). A draught excluder, for a hinged door 3, comprising a wooden, metal or plastic strip 1 screwed at 2 to the door 3 and a wooden or other strip 5 hinged at 4 to strip 1 and urged by a torsion spring 6 away from the door has the strip 5 provided with a metal plate 11 forming a projection 10 so that on closing the door the projection 10 contacts an abutment on the rabbet of the door frame to cause the strip 5 to close towards the lower edge of the door. A rubber strip 16 screwed in a groove 17 in strip 5 contacts the floor in the operative position. The spring 6 is housed in a recess 7 in the strip 5 and has its ends 8, 9, received in openings in the strips 1, 5 respectively. The metal plate 11 may be recessed into the back of strip 5 or as shewn a gap is left between the back of strip 5 and the door when the strip is lowered, a rib 15 on the strip 1 and plate 11 being accommodated in the gap. The end 5<SP>1</SP> of flap 5 is cut on the incline to avoid fouling the abutment on the door frame.
Patent GB-1055696-A (GB)
Title: Electro-photographic reproduction
IPC: G03G17/02
Filed: 1964-07-09
Abstract: 1,055,696. Photo-conductographic processes. EASTMAN KODAK CO. July 9, 1964 [July 15, 1963], No. 28296/64. Heading G2H. A photo-conductive layer 12 such as zinc oxide is exposed to a light image to produce a conductivity image, an electric potential is applied across said image an electrolytic developer 16 solution being in contact with it either simultaneously with or subsequent to the exposure, and the light exposure or the electric potential is terminated when the total electric charge passed through said layer reaches a predetermined value. The electrolyte may deposit an image of metal, metal hydroxide or dye, whose density depends on the total charge passed. The zinc oxide in a resin binder forms layer 12 on aluminium foil 13 on a paper base 14. For contact printing, electrolyte is sandwiched between layer 12 and a second electrode 18 or layer 12 may be covered by a uni-dimensional conductor, 20 to improve image resolution. In this case the image appearing on conductor 20 is transferred to a receiving sheet which may be the electrode 18. This system may also be used for projection printing from transparency 26 using lamp 25. Electrolyte 35 is contained by metal frame 31 insulated from layer 12 by layer 32 of polytetrafluoroethylene the electrolyte being added after exposure if a persistent conductivity layer 12 is used, or if non-persistent, a transparent electrolyte 13 used as development proceeds during exposure. In Fig. 4 electrolysis current from battery 42 passes through integrator 43 which provides a signal to switch off the lamp 25 at 39 when the predetermined charge has passed. Alternatively shutter 28 is used to end the exposure. In a modification in which development is either simultaneous or subsequent to the exposure, integrator 43 is used to switch off the electrolysis current. Two integrators are used in a variation whereby exposure is coded first and then, after a period of electrolysis at a higher potential, development is ended. The electrolysis current is selected by means of variable resistor 65 the voltage across which is applied to the integrating circuit consisting of resistor 64 and capacitor 68 and the output voltage is applied to the grids of double triode 66. Relay 72 is then actuated through a meter relay 71 and switch 62 is opened to end the exposure, and switch 73 is closed to discharge and re-set capacitor 68. A similar circuit may be used for controlling development time.
Patent GB-1478145-A (GB)
Title: Coated glass containers
IPC: B65D23/08
Filed: 1974-06-27
Abstract: 1478145 Polymer coated glass containers OWENS-ILLINOIS INC 27 June 1974 [28 June 1973] 28528/74 Heading B2E A lubricious primer-coated glass container has adhering to its outer surface a film capable of retaining broken glass fragments and being stripped integrally from the primed container without leaving a residue thereon, the film comprising an ionic copolymer of an alpha, beta ethylenically unsaturated carboxylic acid and an alpha olefin, part of the carboxyl groups being neutralised with a cation. The primer may comprise polyethylene and an optional further subcoat of TiO 2  or SnO 2 . Suitable carboxylic acid monomers are acrylic, methacrylic, fumaric and maleic acids and maleic anhydride. Suitable olefins are ethylene, propylene and butene. Up to 10%, by weight of copolymer, of vinyl chloride may be incorporated into the film. A warm or cool container is preferably coated by dipping in or spraying with an aqueous dispersion which may contain a cross-linking agent, followed by heating to fuse and coalesce the coating.
Patent GB-1115917-A (GB)
Title: Method and apparatus for shaping, by extrusion, metallic carbides and in particularuranium monocarbide
Inventor: ACCARY ANDRE
IPC: B21C23/00
Filed: 1965-07-06
Abstract: <PICT:1115917/C6-C7/1> In the extrusion of metallic carbides the starting workpiece may be a preliminary molten product or made by compressing a powder mixture of uranium oxide and graphite, preferably into porous pellets.  The extrusion temperature ranges from 2200-2400 DEG C., preferably 2250-2350 DEG C., the extrusion pressure 200-800 kg/cm2 and the extrusion ratio from 2.8 to 10.  To prevent surface cracking, a layer of uranium dicarbide may be applied to the starting workpiece in suspension in collodium solution or in another organic liquid. In a direct extrusion process, Fig. 1, the graphite die 2 is mounted on graphite supports 3, 4 on the hearth 5 of a vacuum furnace 1.  Pressure is applied by a graphite ram 6 acting through a graphite block 7.  A heating element 10 surrounds the die which may have a conical orifice portion (12), Fig. 2 (not shown) or a hyperbolic portion (14), Fig. 3 (not shown).  In another embodiment, Fig. 4 (not shown), the die (2) is placed in the bore of a graphite container (15) having a liner (16) of low strength graphite; a graphite ram (8) is used.  In a further embodiment, Fig. 5 (not shown), the workpiece is extruded backwardly through a die (2) mounted on the end of a graphite ram (8).  Reference is made to the extrusion of uranium monocarbide, dicarbides of uranium thorium, plutonium, tungsten or a mixture of thorium and uranium carbides.
Patent GB-879197-A (GB)
Title: Improvements in and relating to the production of aldehydes and ketones
Inventor: DEAN FRED
IPC: C07C45/30
Filed: 1959-08-21
Abstract: Olefines are oxidised to aldehydes or ketones having the same number of carbon atoms by passing the olefine through a solution comprising chlorauric acid and simultaneously or subsequently contacting the solution with nitric oxide or a higher oxide of nitrogen so that the metallic gold produced is reconverted to chlorauric acid.  Suitable starting olefines are, for example, ethylene, propylene, butene, di-olefines and olefines substituted by an aromatic hydrocarbon group.  Preferably the reaction is carried out at a temperature which does not exceed 100 DEG C. in the presence of a gas containing free oxygen.  Examples are given of the conversion of propylene to acetone.
Patent GB-215668-A (GB)
Title: Improvements in advertising signs
IPC: G09F13/24
Filed: 1923-11-14
Abstract: 215,668. Orme, J. Nov. 14, 1923. Moving liquids, utilizing.- In a sign in which alternate drops of water and bubles of air circulate through letters &c. constructed of glass tubing, the water and air are supplied by a dropper comprising a chamber D, a water dropping tube A projecting into the chamber D and provided with a cock F, an air inlet tube B, and a tube C leading to the sign. The dropper may be constructed of glass, celluloid, metal, or other material.
Patent GB-501304-A (GB)
Title: Improvements in or relating to stuffing boxes for fluid pressure engines
IPC: E21B43/117
Filed: 1937-10-22
Abstract: 501,304. Stuffing-boxes. WEIR, Ltd., G. & J., HILLIER, H., and SIM, J. Oct. 22, 1937, No. 28844. [Class 122 (v)] A stuffing-box is provided at or near the inner end of the packing space with a normally closed opening K for the introduction of plastic or granular packing, and a subsidiary stuffing-box is provided in the main gland E to prevent wastage of packing along the shaft &c. A. The gland E may be adjuatable or may make a joint with the end of the box. Cooling liquid inlet and outlet passages S, T are provided for the subsidiary box. The packing is injected intothe box from a hopper V by pressure air or liquid supplied at W to a nipple U. A passage Y in the nipple permits escape of the air or liquid from the box.
Patent GB-1512444-A (GB)
Title: Control system for the control of energy distribution lines
IPC: H02H7/26
Filed: 1975-07-09
Abstract: 1512444 Locating faults on distribution lines ITT INDUSTRIES INC 9 July 1975 [9 July 1974] 28901/75 Heading H2K To identify the faulty section of a sectionalised distribution line after a main circuit breaker A1 feeding the line has been tripped, all the section isolating switches B1-Bkare opened, the circuit breaker A1 reclosed and then each isolating switch reclosed in turn-beginning with the one nearest the circuit breaker (i.e. B1)-a fixed time delay after reclosure of the preceding switch When the isolating switch (Bn, say) feeding the faulty section bn closes the circuit breaker A1 will retrip, and by measuring the total time delay between the reclosing and retripping of A1 the faulty section can be identified. To restore power to the remaining sections, when A1 retrips a lock-out circuit is activated in the isolating switch Bn which had just closed. The sequence then starts again: all the isolating switches Bl-Bn re-open, the circuit breaker A1 recloses and then each isolating switch recloses in turn, but this time the sequence stops at switch Bn, which is locked-out. Having thus restored power to the intact sections blb(n-1) on one side of the fault, the procedure is repeated from the circuit breaker A2 at the other end of the line, to restore power to the remaining intact sections B(n+1)-bk.
Patent GB-680914-A (GB)
Title: Improvements in or relating to instruments for testing the polarity of current in anelectrical circuit
IPC: G01R19/14
Filed: 1949-11-11
Abstract: 680,914. Current and current direction indicators. SLESS, B. Nov. 11, 1949, No. 28919/49. Class 37. Current or polarity is indicated by a glow-lamp 9 viewed through an aperture 15 in the end of its casing and connected through a high resistance 6 to a contact blade 1 in contact with the line under test, the circuit being completed to earth through the body of the operator. The blade 1 may be a screwdriver, and the lamp 9 is connected by a spring to the resistance 6.
Patent GB-580522-A (GB)
Title: Improvements in or relating to radio compasses
IPC: G05D23/02
Filed: 1939-10-31
Abstract: 580,522. Directive wireless signalling. SANGAMO WESTON, Ltd. Oct. 31,1939, No. 29096. Convention date, Aug. 11. [Class 40 (v)] [Also in Group XXXVI] Two alternating currents of different phase or amplitude, particularly the signals used in a Wireless direction finder, are measured or compared on an indicator of the direct-current type. As shown in Fig. 1, signals from arotatable frame aerial 1 are combined (a) with local oscillations from a valve generator 4 in a balanced modulator 7, and (b) with signals from a vertical aerial 3, in an amplifier-detector 11. One diagonal of a bridge circuit 14, comprising four detectors 15 with series polarity, is connected across the resulting " cardioid " output from the detector 11, whilst the other diagonal is connected across the output 16 from the local oscillator 4. The direct-current indicator is connected across mid-point tappings on the output windings 13, 16 respectively, and is deflected to one side or other according to the " phase " or orientation of the frame aerial with respect to the distant transmitter. The movement of the indicator needle between relay contacts 24 may control a reversible motor 22 and gearing 28, to maintain the frame aerial in its critical position, or may actuate rudder controls. As applied to overlapping-beam signals, Fig. 5, the bridge circuit 47 is connected across (a) the output coil 43 from the amplifiers 38, 39, and (b) the output coil 42 from the local-oscillator, respectively The direct-current indicator 45 is then deflected to one side or other, to show which of the two beam signals predominates.
Patent GB-359165-A (GB)
Title: Improvements in and relating to electric indicating systems
IPC: H02J13/00
Filed: 1930-09-29
Abstract: 359,165. Electric signalling systems ; sound-reproducing machines. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hilliard, J. D. ; 13, Pearl Street, Glen Falls, New York, U.S.A.) Sept. 29, 1930, No. 29138. Convention date, Sept. 30, 1929. [Classes 40 (i) and 40 (ii).] In a system for signalling the positions of movable members, e.g. circuit-breakers of a power distribution system, the positions are signalled by verbal announcement. In the arrangement shown, each circuit-breaker is controlled through " closing " and " tripping " coils 5, 6 by a manual switch 9 and has an associated phonographic record 18 adapted to control a microphone or other transmitter 13. The transmitters are connected to the supervisor's position at which is provided a loud-speaker 1 adapted to be plugged into jacks 16 corresponding to the transmitters. Upon operation of a switch 9 to actuate the associated circuit-breaker, a motor 19 is operated to drive the record, and according to the movement of the circuit-breaker, one or other of the needles 21, 22 is brought into engagement with the record by a rod 28. The needles are hingedly connected by a link 34 to facilitate removal of one needle when the other is in operation and are provided with extensions 25, 26 which co-operate with a pin 27 attached to the diaphragm of the transmitter. The rod 28 carries spring members 30, 32 which engage the respective projections 31, 33 on the needle 21 when the rod is moved in either direction to effect operation of the needle and render resilient the connection between the phonograph and the transmitter.
Patent GB-1172879-A (GB)
Title: Common Channel Signalling System
Inventor: THOMAS DAVID LLEWELYN
IPC: H04Q3/00
Filed: 1967-06-23
Abstract: 1,172,879. Automatic exchange systems. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. 21 June, 1968 [23 June, 1967], No. 29161/67. Heading H4K. An exchange system has message links connecting each exchange to at least two other exchanges and has separate signalling channel links connecting the exchanges in a chain, a faulty signalling link being replaced by seizure of at least one message link. The signalling links may order the exchanges in a loop. If both message links and the signalling link between two exchanges are broken message links are seized for signalling and signalling links may be discarded in order to rearrange the signalling chain or loop. For example, if separate signalling channels are provided between exchanges A to F in a loop AB, BC, CD, EF, FA, and should all paths between E and F be broken, the loop may be reconstituted by deleting the AB signalling links and substituting FB and EA signalling links to give an order AF, FB, BC, CD, DE, EA. The new signalling links FB and EA are provided by seizing message links and the discarded AB signalling link may be employed as a message link. An exchange system may employ a number of such signalling link loops, some exchanges being in more than one loop to provide loop-to-loop signalling.
Patent GB-1436083-A (GB)
Title: Conversion of hyerogen sulphide to sulphur
IPC: C01B17/04
Filed: 1974-07-02
Abstract: 1436083 Preparation of sulphur RALPH M PARSONS CO 2 July 1974 [9 July 1973] 29197/74 Heading C1A Sulphur is produced from an acid gas stream of low hydrogen sulphide concentration by (a) indirectly heating the acid gas stream to a temperature of from 400 to 650 F., (b) generating a sulphur dioxide gas stream by the combustion of sulphur in the presence of an oxygen containing gas, in a high temperature flame zone, the amount of oxygen being sufficient to generate sulphur dioxide in an amount equal to about 50% by volume of the hydrogen sulphide contained in the acid gas stream, and the amount of sulphur being at least 25% greater than that required for conversion to sulphur dioxide (c) cooling the sulphur dioxide gas stream to 270 to 750F. to condense excess sulphur, (d) combining the heated acid gas stream with the cooled sulphur dioxide gas stream and converting catalytically to elemental sulphur, and (e) condensing the so formed sulphur, and recycling a portion to said flame zone. Preferably, the acid gas stream contains less than 20% hydrogen sulphide, and is heated to 430 to 500 F.; the flame zone may be maintained at above 2000 F., especially 2100 to 2800 F. Catalytic conversion is suitably effected using an alumina catalyst.
Patent GB-1091576-A (GB)
Title: Voice-frequency key-dialling circuit arrangement for telecommunication,particularly telephone exchanges
IPC: H04Q3/42
Filed: 1965-07-09
Abstract: 1,091,576. Substation circuits. INTERNATIONAL STANDARD ELECTRIC CORPORATION. July 9, 1965 [July 10, 1964], No. 29207/65. Heading H4K. In a V.F. key sender utilizing a transistor oscillator, V.F. signals for e.g. signalling an operator's position, may be sent during a call by depressing a key which shunts the loop with a high resistance and then after a predetermined delay connects the oscillator to the loop. The delay ensures that a register is connected up in order to receive these signals. Whenever a digit key T1 ... 0 is depressed, switch Tg connects the line a, b to the oscillator T, L, C, and disconnects the speech circuits SpK. During a call capacitor C3 is charged by line current and T is non-conducting. If the operator recall button RT1, RT2 is operated, the loop is effectively opened due to the very high shunting resistance of R4 and capacitor C3 discharges, thereby preventing T from conducting until the discharge is complete. Normally, one of buttons T1 ... 0 is operated with RT1, RT2 so that a V.F. signal is sent as soon as T conducts. Alternatively (Fig. 2, not shown), simultaneous depression of two of the digit keys may be effective automatically for closing RT1 and RT2.
Patent GB-549569-A (GB)
Title: Improvements in or relating to electric forging apparatus
IPC: B21J9/08
Filed: 1939-11-02
Abstract: 549,569. Breaking; upsetting. GASPAR, E., and OMES, Ltd. Nov. 2, 1939, No. 29251. [Classes 83 (ii) and 83 (iv)] Apparatus for breaking by tension or for upsetting electrically heated blanks is arranged to heat two blanks in series. Machines of existing types may readily be adapted to employ the means described. The vice electrodes 25, 26, Fig. 2, are electrically insulated at 27 and adjustably fixed to the bed at 16, the clamping means being insulated also. These electrodes are connected to the transformer terminals. The movable vice electrode 44 completes the circuit through the two blanks which in the example shown are to be pulled apart to form four projectiles 35a, 38a. The electrode 44 is operated by a hydraulic ram and carries at 43 a vertical ram for effecting clamping. A clamping ram for the fixed electrodes is mounted at 31 and is insulated from them. In a modification two separate machines 55, 65, Fig. 4, are arranged side by side and their electrodes are connected in series as shown. The electrode 44, Fig. 2, may be fitted with anvils when upsetting is to be performed. Specifications 511,295 and 574,931 are referred to. In addition the Provisional Specification refers to Specifications 465,103 and 514,728.
Patent GB-837136-A (GB)
Title: Improvements in or relating to a materials separating apparatus
IPC: B03B5/04
Filed: 1957-09-17
Abstract: 837,136. Vibratory mechanisms. DEISTER CONCENTRATOR CO. Inc. Sept. 17, 1957 [Oct. 1, 1956; July 9, 1957], No. 29286/57. Class 80 (4). [Also in Group II] A vibratory mechanism comprises a housing having two pairs of parallel shafts 182, 184 and 186, 188 having gear-wheels secured thereto, 186 and 188 having gears 198 and 200 of the same pitch diameter and number of teeth and 182 and 184 having gears 194 and 196 of twice the pitch diameter and double the number of teeth of the wheels 198 and 200. Gear-wheels 198, and 194, 194 and 196, and 196 and 200 are in mesh and shaft 188 extends through the housing and may be provided with a drive pulley. Eccentric weights 210, 214, 202 and 206 are secured to gear-wheels 198, 200, 194 and 196 respectively, the weights having apertures to receive plugs of different weight so that the differential of the mechanism may be altered. The eccentric weights are positioned on the gear-wheels in such manner that they do not interfere with one another during rotation. In use the mechanism produces a maximum deceleration in one direction greater than in the other direction.
Patent GB-414035-A (GB)
Title: Improvements in or relating to filters for air or other gases
IPC: B01D46/06
Filed: 1932-10-20
Abstract: 414,035. Air &c. filters. HALL & KAY, Ltd., HALL, J. H., and KAY, P., Stockport Road, Ashton-under-Lyne. Oct. 20, 1932, No. 29314. [Class 8 (ii).] In a filter for air or gases comprising a series of frames or skeletons covered with flannel &c., the frame &c. is of metal and is provided with a base or junction piece 12, 13 supporting the frame and forming a connection with the conduit into which the filtered air passes. The frame may be of U- shaped wires 18 with supporting rings 19 and top wires 20 supporting the fabric. Alternatively it may comprise a zig-zag plate forming longitudinal ducts with the fabric, or may be constructed of wire gauze with internal zig-zag stiffening plates, expanded metal &c. The flannel &c. may be secured to the base by longitudinal and transverse rods bolted together, co-operating with bulges on the base. Reference has been directed by the Comptroller to Specifications 177,855 and 242,388, [both in Class 8 (ii)].