baber/WOPTO huggingface dataset:
Patent GB-226269-A (GB)
Title: Improvements in presses for drawing sheet metal
IPC: B21D24/12
Filed: 1923-09-17
Abstract: 226,269. Rhodes, C. J., and Berry, G. W. Sept. 17, 1923. Cupping.-A press for cupping sheet metal has a cam oscillated by a moving part and adapted to operate a work-holding ring or sleeve. The press head a carries a stepped matrix a<1>, having a spring plunger a<2>, which matrix is adapted to engage a fixed plunger and a sleeve g<2> which, during the advance of the matrix. first remains stationary and then moves with the matrix. A slide d<20>, connected to the matrix a<1> by rods b, carries a shaft d<1> on which are mounted cams f, h and pinions k3, Fig. 3, these being in engagement with fixed racks k<2> so that. as the shaft is moved down, it is rotated. The cams engage rollers e<2> of slides e<3>, g<4> which support, by adjustable screws j, g<3> and buffers e<1>, g<1>, Fig. 2, work-holding sleeves d<2>, g<2>. The cams, which are relatively adjustable by a bolt and slot j<1>, are. adapted to keep the sleeve d<2> stationary until engaged by the matrix and then allow it to move in unison therewith in order to cut out a disc by edges a<5>, d<4> and to keep the sleeve g<2> stationary until the first draw has been completed. In a modification, the cams are rotated by means of a link i', Fig. 2, connected at one end to a fixed part i and at the other to one of the cams by a slot i<2> and' bolt i<3>. Specifications 192,253 and 219,069 are referred to.
Patent GB-1472322-A (GB)
Title: Gate control of thyristor converters for reversibly driving a dc electric motor
IPC: H02P3/14
Filed: 1974-05-24
Abstract: 1472322 Automatic control systems TOKYO SHIBAURA ELECTRIC CO Ltd 24 May 1974 [30 May 1973] 23320/74 Heading G3R A control system for antiparallel thyristor converters driving a D.C. motor has a retroactive speed loop in which a motor speed dependent voltage and a speed reference are compared, any difference forming a current reference for an inner converter current control loop which uses an integrating operational amplifier. To avoid high currents between the converters when switching from one converter to the other i.e. reversing the motor, the difference between the current reference and the measured converter current is disconnected from the input to the operational amplifier when switching, and replaced by a signal responsive to the motor speed, the output of the operational amplifier also being connected, when switching, back to its input, so that the operational amplifier output follows the motor speed responsive signal during switching. In the embodiment shown, a separately excited D.C. motor 10 in a blooming or thick plate rolling mill is driven by converters 21, 22 from a 3 phase A.C. supply. The motor speed is sensed by D.C. tachometer 36 whose voltage output is compared with a speed reference from potentiometer 33 to form the speed error. A current error is formed at 43 by differencing the speed error and the current in the converter measured by transformer 45 in the converter supply, or measured between the converter and the motor. Integrating operational amplifiers 40, 55 compare this current error with a voltage dependent upon the converter or motor armature voltage, as measured by divider 59. The output of amplifier 55 varies the firing angle of converter 21 or 22 according to the direction of rotation of the motor. To drive the motor in the reverse direction, the polarities of the speed reference, the current feedback and the output of amplifier 55 are reversed. To change direction of the motor, the speed error and feedback current signals to amplifier 40 are disconnected and the input to the converter control 26 swamped, during switching from one converter to the other, by a signal 'l' from logic 82, see Fig. 2 (not shown). This reduces the converter output to a minimum value and slows the motor by regenerative braking. When the converter current falls to zero, the contacts 91, 92, e.g. transistor switches, close to feed the armature or converter voltage from divider 59 to amplifier 40, which also receives the output of amplifier 55. Changeover between the converters then occurs with the circulating converter current limited due to the swamping effect of signal 'l'. In an alternative Fig. 8 (also not shown) the converter or armature voltage feedback to amplifier 40, when switching, is replaced by a motor speed signal.
Patent GB-1310647-A (GB)
IPC: C09D5/46
Filed: 1971-04-19
Abstract: 1310647 Extruding mineral powders COMMISSARIAT A L'ENERGIE ATOMIQUE and SOC DE FABRICATION D'ELEMENTS CATALYTIQUES 19 April 1971 [12 March 1970] 23398/71 Heading B5A [Also in Divisions C1 and C7] A spray-cord having an internal core comprising a mineral powder, a mineral compound and an organic binder, and an organic sheath around the core, may be made by simultaneously extruding two pastes through concentric nozzles. The paste for forming the core may be made by mixing molybdenum particles with hydroxyethylmethylcellulose, fibrillary aluminium hydroxide and water. Glycerin is then added, the paste forced through a nozzle having 1 mm. diameter holes, and then compacted in the form of a homogeneous cylinder. The paste for forming the sheath may be made by mixing hydroxyethylmethylcellulose and hot water and then adding glycerine. It is then allowed to stand for at least 48 hours in a sealed container before being formed in a cylinder ready for the extrusion process. After extrusion the cord is dried at 40‹ C. for 24 hours. In other embodiments the molybdenum is replaced by aluminium oxide, zirconium oxide, uranium oxide, nickel aluminide or nickel titanide; and the fibrillary aluminium oxide by aluminium oxychloride, zirconium acetate, uranium nitrate or boric acid. Organic binders used include polyvinyl alcohol and triethanolamine.
Patent GB-665603-A (GB)
Title: Improvements in or relating to distributors for fluids
IPC: F23K3/00
Filed: 1947-08-25
Abstract: 665,603. Distributer. FOSTER WHEELER, Ltd. Aug. 25, 1947. [Aug. 24, 1946] No. 23434/47. Class 21. [Also in Groups XI, XII and XXX] A distributer (Fig. 3) for distributing a fluid stream comprises at least one substantially flat elliptical disc 44 secured at its approximate centre to rotating shaft 37, the plane of the disc being transverse to the fluid flow and subtending an angle other than a right angle to the direction of the axis of the shaft. Fig. 1. Fuel introduced at 13 is ground at 15, classified at 14 and blown by pump 1 through distributer 44 into outlets 31, in each of which a distributer 50 directs the entrained fuel to burners 33 of furnace 10. Fig. 3. The distributer consis s of elliptical plates 44 fixed obliquely on shaft 37 mounted in bearings 38 and driven by motor M. and distributes the entrained fuel to the outlets 31. Fig. 7 The distributer may be an elliptical plate 52 rotated on vertical shaft 53 by motor 58. The fuel stream rises un pipe 18 and distributed evenly by the plate to tne outlets 57 governed by valves 65.
Patent GB-1033183-A (GB)
Title: Surgical pad
IPC: A61F13/06
Filed: 1963-06-12
Abstract: 1,033,183. Surgical pads. SCHOLL MFG. CO. Ltd. Jun. 12, 1963 [Jun. 13, 1962], No. 23452/63. Heading A5R. A surgical pad for corns or bunions, comprising cushioning and covering layers secured together, has the outer covering layer extending over the affliction-receiving opening which is formed in the other layers, and deformed to a domed shape where it overlies the opening. In addition, at least part of the cushioning pad projects outwardly from the foot further than the surface of the domed portion. In the case of a bunion pad cushioning may be provided by a complete annulus of foam plastic material 2 and an arcuate layer 3 of similar material, of tapering thickness. These are sealed between film layers 1, 4, the former being apertured to provide the affliction-receiving opening 5 while the layer 4 extends over the whole surface of the pad but is deformed to a domed shape 8 where it overlies the opening 5. A toe loop 9 may be incorporated in the construction.
Patent GB-1521216-A (GB)
Title: Telephone systems
IPC: H04M9/00
Filed: 1976-06-07
Abstract: 1521216 Intercommunication systems TELEFONAKTIEBOLAGET L M ERICSSON 7 June 1976 [13 June 1975] 23501/76 Heading H4K A telephone system comprises two telephones interconnected by a two wire line, the system having access to an external line such that it is possible to make an external call from each telephone set, an internal call between the telephone sets and a conference call between the sets and an external set, each of said two telephones A and B being provided with a voltage source E connectible to the line a, b in either of its two polarities, a busy indicator I a  connected to respond to one connected polarity of the voltage source at the other telephone set. an annunciator (such as a buzzer) BZ connected to respond to the other connected polarity of the voltage source at said other telephone set, and a monitoring indicator I #  connected to be actuated by the series connection of both voltage sources if both telephone sets are off-hook during an external call. The indicators may be glow lamps or L.E.D.'s. The monitoring indicators allow each party to be aware that the other is listening in or taking part in an exchange call in which it is involved and allows the other party by periodically operating his exchange call switch to flash the indicator as an intrusion request. Each telephone is provided with an exchange connection switch EK with an exchange hold resistor R and an internal call switch LK. An exchange line can be held while an enquiry to the other party is made and the other party can enter into the exchange line call by operating his exchange line switch (both parties restoring their internal call switch) and can take over the call.
Patent GB-351796-A (GB)
Title: Improvements in or relating to warp moistening devices for looms for weaving
IPC: D03J1/00
Filed: 1930-08-07
Abstract: 351,796. Damping warps in looms. COLOMBO, E. A., 6, Wetmore Road, Shanghai, China. Aug. 7, 1930, No. 23618. [Class 142 (ii).] A wooden warp clamping roller B is mounted in a wooden, brass or other metal water-trough A supported by carriers a, which are carried by rods a<1> acted upon by weighted ropes C passing around pulleys c whereby the roller B is kept in contact with the warp on the beam as this empties. In a modification, the carriers a are supported by levers connected to a counterweighted lever.
Patent GB-155912-A (GB)
Title: Improvements in automatic door-locking means for forced draught furnaces
IPC: F23M7/00
Filed: 1919-09-25
Abstract: 155,912. Howden & Co., Ltd., J., and Hume, J. H. Sept. 25, 1919. Air supply, regulating. - In a forced-draught front with side air valves and means for preventing opening of the fire-door when the valves are open, the valves are separately operable and each has its own door-locking device. As shown in Fig. 1, the door-lock for the left-hand valve is a bolt 4 connected to the valve handle 2, and that for the right-hand valve is a similarly operated bolt 6 mounted in guides 7 below the fire-door and having a projection 8 likewise adapted to engage the swinging side of the door. In a modification, the projection 8 is between the guides 7 and engages a downward projection on the fire-door at a point away from the hinge.
Patent GB-189263-A (GB)
Title: Improvements in or relating to means or apparatus for placing the lid upon the shells or containers of meat, fruit and other pies
IPC: B67B1/04
Filed: 1921-09-06
Abstract: 189,263. Campbell, C. W., and Wheatcroft, A. Sept. 6, 1921. Pie-lidding machines.-A machine for fixing the lids on meat &c. pies, comprises a spring- controlled vertical spindle h reciprocated in an upright standard b fixed to a base a, a removable mould v mounted on a centring block s, and a lidding device attached to the spindle h and provided with a cushioning-ring r. The lidding device comprises a long boss m and a disc n having a projecting portion p with bevelled serrated periphery p<1> and recesses p<2>, p<3>; and a circumferential groove q to contain the rubber &c. ring r. The tapered mould v is mounted on a projection u in the block s, and the moulded pie is detached therefrom by thin metal strips z attached to a ring x rotated by a handle y. The spindle h, lubricated by an oil cup k, moves in a bearing d held in position by a cover e secured by screws f, and is raised by a spring j compressed between a disc c<1> and a handle i.
Patent GB-275439-A (GB)
Title: Improvements in dispensing cans
IPC: B65D47/26
Filed: 1926-09-27
Abstract: 275,439. Tamke, F. W. Sept. 27, 1926. Spouts.-A can has an inclined stepped depression formed near one corner of the rimmed top, the side wall of the depression being slightly undercut so that the base portion or nipple 7 of a spout member can be expanded so as to be rotatable therein. The base of the nipple is formed with an eccentric opening 10, and a corresponding opening 6 is adapted to be punched in the base 4 of the depression to register therewith when the spout is turned into the pouring position as shown. When the spout is turned so as to lie within the rim 3 the opening 6 is closed by the nipple.
Patent GB-266241-A (GB)
Title: A device for locking pedals such as low-gear pedals and throttle and brake pedals of motor vehicles in different effective positions
IPC: B60K26/02
Filed: 1926-09-28
Abstract: 266,241. Knup, A. Sept. 28, 1926. Hand, foot, and personal actuation.-A locking device for gear, brake, throttle, &c. pedal levers on motor vehicles, applicable to Ford cars 'to lock the low gear in action, comprises a toe-plate 4 pivoted by a bolt-and-nut 5 to the pedal plate 3 and provided with a laterally extending bar 11 adapted to co-operate with a fixed toothed segment 13. When the pedal 1 is pressed forward, it may be locked by tilting the toe plate to bring the bar 11 into engagement with the undercut teeth of the segment 13. The toe-plate is formed with converging walls 6, 7, the wall 6 carrying an adjustable plate 10 which, as well as the opposite wall 7, is lined with leather or the like. Stops 12 on the pedal plate limit the tilting movement.
Patent GB-502651-A (GB)
Title: Improvements in or relating to closures for milk or other bottles
IPC: B65D51/22
Filed: 1938-08-13
Abstract: 502,651. Disc closures for milk-bottles. BOHABOJ, V., and CHYLEK, F. Aug. 13, 1938, No. 23898. [Class 125 (iii)] A closure for milk and other bottles comprises a disc 1, Fig. 1, having a cut 6, Fig. 5, extending radially inwards from the edge, a seal 2 for the disc 1, a cover 3 fitting over the top edge or rim of the bottle 5 and a band or string 4 for opening the closure secured to one edge of the severed disc 1 adjacent to the cut and passed diametrically across its upper surface to the other edge, the band being stuck to the disc by the seal 2 which is stuck to the paper, aluminium or like foil cover 3.
Patent GB-816540-A (GB)
Title: Process for the preparation of alumina-containing formed pieces which are suitable as adsorbents
IPC: B01D53/14
Filed: 1957-07-29
Abstract: 816,540. Alumina adsorbent; purifying hydrocarbon oils. BATAAFSCHE PETROLEUM MAATSCHAPPIJ N.V., DE. July 29, 1957 [July 30, 1956], No. 23962/57. Classes 1 (3) and 91. Pieces of natural or synthetic hydrated alumina of size between 0.25 and 5 mm. are impregnated with an aqueous aluminium salt, dried and heated to above 200‹ C. to form an adsorbent suitable for refining hydrocarbon oils. The alumina used, e.g. bauxite or other natural alumina containing three molecules of water per molecule, is not activated by heating before the impregnation: the amount of aqueous aluminium salt, e.g. the chloride, sulphate or nitrate, is sufficient to fill the pores of the alumina without causing the particles to stick together. The aqueous solution may if desired also contain an organic solvent such as methanol. The alumina after drying, e.g. at 100-150‹ C., preferably contains 0.2-0.6 per cent of the salt, and the subsequent heating may take place firstly at 200-300‹ C., whereby the water of hydration is expelled, and then at 400-800‹ C. In an example, the decolorizing activity of a bauxite treated according to the invention is compared with untreated bauxite and fuller's earth, in the treatment in the illustrated apparatus of Venezuelan lubricating oil raffinate obtained by extracting a heavy distillate with furfural. The oil is pumped through line 1 into a stainless steel tube 2 and the level maintained at 7 throughout the process by valve 6. A heating jacket 3 is used to maintain a temperature of 170‹ C. The tube 2 contains in the upper half glass beads and in the lower half the adsorbent. As adsorbents for decolorizing a lubricating oil there are also referred to in the example, bauxite impregnated with aluminium chloride after heating and bauxite according to the invention which has been subsequently steam treated at 500‹ C. Specification 675,349 is referred to.
Patent GB-394171-A (GB)
Title: System of separation between the positive and the negative electrodes of electric dry-cells
IPC: H01M2/16
Filed: 1932-08-30
Abstract: 394,171. Batteries. LAURENTI, B., 16, Via Riguccio Galluzzi, Florence, Italy. Aug. 30, 1932, No. 24243. Convention date, Sept. 16, 1931. [Class 53.] The zinc cup a of a dry cell is covered on its interior surface with a layer c of gelatine which is formed by pouring melted gelatine into the cup, distributing it over the surface of the cup and allowing it to cool. The gelatine is rendered insoluble either before or after application to the cup. The Specification as open to inspection under Sect. 91 states that the gelatine layer may be applied to the agglomerate mass of the central electrode instead of to the zinc cup and that gelatine in sheet form may be used. The gelatine may be replaced by glue or other gelatinous or colloid substances. This subjectmatter does not appear in the Specification as accepted.
Patent GB-795257-A (GB)
Title: Improvements in or relating to the polymerization of ethylene
IPC: C08F10/00
Filed: 1955-08-23
Abstract: Catalysts for the polymerization of ethylene comprise a reduced anhydrous phosphomolybdic acid of formula P2Mo20-25O3-51, wherein the valence of the molybdenum is below 4.  The catalyst may be prepared from dehydrated, commercial phosphomolybdic acid by reduction with hydrogen, with or without a diluent such as nitrogen or carbon monoxide, at 350 DEG  to 500 DEG  C.  In an example, phosphomolybdic acid of formula 2(H3Po4).  22MoO3.49H2O is dehydrated to P2O5.22MoO3 and the anhydrous acid is heated in hydrogen at 400 DEG  C. for 24 hours to give a product corresponding to P2Mo22O50.6.  The catalyst may be used in conjunction with a promoter, such as zinc, sodium, molybdenum, magnesium, lithium hydride, calcium hydride or lithium aluminium hydride, and with a support such as carbon, silica gel, aluminium or kieselguhr.  The promoter may be added to the commercial acid prior to its reduction.  Specification 579,883, [Group IV], is referred to.ALSO:Ethylene is polymerized with a catalyst comprising a reduced, anhydrous phosphomolybetic acid of formula P2Mo20-25O3-51 wherein the valence of the molybdenum is below 4.  Copolymers may be obtained with butylenes, styrene, carbon monoxide, acrylic and methacrylic acids, esters, amides and nitriles, tetracyanoethylene, maleic and fumaric acid esters, vinyl chloride and fluoride, chlorotrifluoroethylene, dichlorodifluoroethylene, tetrafluoroethylene, vinylidine chloride and fluoride, vinyl trimethylacetate and propionate, and methyl vinyl ketone.  The catalyst is prepared by reduction of dehydrated commercially available phosphomolybdic acids, preferably using hydrogen and obtaining a product of surface area above 100 square meters per gram. Catalyst activity may be promoted with zinc, sodium, molybdenum, magnesium, lithium hydride, calcium hydride or lithium aluminium hydride and these may be added to phosphomolybdic acid prior to reduction.  Catalyst supports such as carbon, silica gel, aluminium and kieselguhr may be used.  The polymerization may be in bulk or in an inert medium such as xylene, benzene, toluene, cyclohexane, heptane, isooctane and halogenated hydrocarbons, and the process may be batchwise, semi-continuous or continuous, e.g. continuous introduction of ethylene.  The products may be fractionally extracted with benzene or xylene followed by precipitation with methanol.  The products are of high molecular weight, melting point and degree of linearity and may be pressed into films and cold drawn. Specification 579,883, [Group IV], is referred to.
Patent GB-1074203-A (GB)
Title: Polishing the surface of tungsten bodies
IPC: H01K3/02
Filed: 1964-06-11
Abstract: The surfaces of tungsten bodies are polished by putting the degreased bodies into an aqueous solution containing at least one oxidizing and at least one alkaline component in such a molar ratio that the oxide layer formed by the oxidizing component and part of the alkaline component is dissolved by the rest of the alkaline component. For example, tungsten spirals for valves are placed into an aqueous solution containing NaOH or KOH and K3Fe (CN)6.  The molar ratio may be kept constant by continuously measuring electrochemically the concentration of the polishing solution and supplementing consumed alkaline component and anodically oxidizing reduced oxidizing component.
Patent GB-224666-A (GB)
Title: Improvements in wage paying machines
IPC: G07D11/00
Filed: 1923-10-01
Abstract: 224,666. Burdick, C. L. Oct. 1, 1923. Money - delivering apparatus-Coins and notes are delivered in recorded definite quantities by ejectors operated by keys. Means are provided to indicate when the money tubes and bars are nearly empty. Bars 4 with springs clips 4a for paper money and coin tubes 3 are held in a casing 1 by spring- latched gates 2. The coins are pressed upwards against the gates by a spring 16 carrying a platform 17 mounted on a tubular piece 18 which telescopes with a piece 19 on the framework. A signalling arm 20 carried on a piece 18 projects over the casing when the tube is nearly empty of coins and a hinged piece 21 on the gate drops and intercepts the ejector when the tube contains no coin. The paper money ejectors are operated by arms 6a secured to vertical spindles 6<b> which advance the bars 4 upwards after each ejection. A spiral spring 22 rotates the shaft 23 of a toothed wheel 24 which engages openings in the bars 4. A ratchet wheel 25 with a spring-actuated pawl 26 is rotated through a lug 26a which is tripped, on the return movement of the ejectors, by a stud 27, the recoil of the spring 22 lifting the bar 2. Pieces 21<a> on the gates 2 are fitted to operate in the same way as the pieces 21 on the coin tubes. In a modification the coil spring is eliminated, the return movement of the ejector lifting the bar 4 by means of a pivoted arm which receives a thrust from a peg on the ejector. The ejectors are operated by a lever 40 and shaft 40<a>. The requisite keys are depressed and lock the shafts 41 with the levers 42 connected to rods 43, the levers 42 being locked to the shafts 41 by spring-controlled hinged locking pieces 50. To secure the keys when depressed and release them after each operation, spring catches 55 mounted in the pieces 7, 7<a> bear against the interior of the shafts 41 and are locked in a circular groove 56. On the movement of the crank 40 the catch 55 falls into a vertical groove 57 and releases the keys. The typing mechanism comprises consecutive number printing elements 10 operated bv a spring push button 10<a>, the return of the printing elements to normal advancing the type-bar roller 11 over the paper 9 carried from a supply roller 9<a>. The forward feed of the paper is effected by a ratchet wheel 12 on the roller shaft, a pawl 13 on the printing element advancing the wheel 12. The paper can be advanced half the normal distance by a spring-actuated rod 14 without operating the numbering element.