baber/WOPTO huggingface dataset:
Patent GB-188707-A (GB)
Title: Improvements in and relating to electron discharge apparatus
IPC: H04B1/16
Filed: 1921-06-18
Abstract: 188,707. British Thomson - Houston Co., Ltd., (General Electric Co.). June 18, 1921. Vacuum tubes.-A thermionic valve having a cathode, an anode at a high positive potential, and an interposed grid at an intermediate potential, is so arranged that the grid circuit has a negative resistance characteristic due to secondary emission from the grid being attracted to the more positive anode. The control or input circuit of the valve is connected between the filament and a second grid nearer to the filament than the first, and the output circuit is coupled to the plate circuit. The valve may also be adjusted to operate independently of the negative resistance characteristic. The connections for amplifying currents of audible or radio frequency are shown in Fig. 1, in which the plate circuit includes a direct-current source 6 and an output transformer 9. The grid 4 is given a potential lower than the plate 3 by means of a potentiometer 7 across the source 6 or by other means, and its circuit includes a resistance 18 shunted by a condenser 11. The input transformer 8 is connected between the cathode 2 and control grid 5. When using the valve as a detector a series condenser is connected in the circuit of the control grid 5 shunted by a high resistance; and the grid 4 may be connected through the resistance 18 to the positive side of the source 6. The presence of the grid 4 prevents electrostatic effects between the control grid 5 and the plate, thus preventing self-oscillation and increasing the pcssible amplification for high frequencies.
Patent GB-297503-A (GB)
Title: Improvements relating to electric heating devices for use in electric furnaces, domestic heating appliances and the like
IPC: H05B3/42
Filed: 1927-06-24
Abstract: 297,503. Rosenhain, W., and Prytherch, W. E. June 24, 1927. Contacting-solid resistances.-Rods, balls &c. of carbon or metal of a high melting-point are enclosed in a refractory sheath to form a heating- resistance, the air space between the rods &c. and the walls of the sheath being not more than a millimetre and preferably about <1>/10 of a millimetre. Fig. 1 shows an arrangement in which rods 2 are enclosed in a sheath 1 between end pieces 3 attached by set-screws 5 to metal caps 4. The heating surfaces are more closely spaced near the ends of the tube than in the middle. The material of the pellets or the cross-section of the sheaths may vary along the sheath. Two concentric sheaths may be provided enclosing between them rings or balls, there being only one layer of balls between the two sheaths as shown in Fig. 5.
Patent GB-780034-A (GB)
Title: Lubricant
Inventor: KRISCHAI HANS GEORG
Filed: 1954-06-09
Abstract: A lubricant composition comprises a major proportion by volume of a liquid diester of a dicarboxylic acid or a mixture of such diesters, e.g. di-2-ethylhexyl and dinonyl sebacates and adipates and esters of azelaic acid, 10-30 per cent by volume of a liquid complex ester which is an ester of a glycol and a dibasic acid chain terminated by a monobasic acid and/or an alcohol, e.g. an ester prepared from sebacic acid, polyethylene glycol 200 and 2-ethylhexanol, and 3-20 per cent by weight of a soluble polymer of an unsaturated ester, e.g. acrylates and methacrylates having a molecular weight within the range of 5000 to 30,000.  Other liquid complex esters are described in Specifications 666,697, 683,803, 740,558, 743,571; 744,816, 747,903, [both in Group IV (b)], 756,959, 758,243, 758,522, 758,838 and 778,691.  The compositions may also contain anti-oxidants as described in Specification 743,571, preferred being catechol and phenothiazine.
Patent GB-382920-A (GB)
Title: Motor-support and bobbin-winder of sewing machines
IPC: D05B69/12
Filed: 1932-06-16
Abstract: 382,920. Sewing-machines. FAIRWEATHER, W. C., 65, Chancery Lane, London.-(Singer Manufacturing Co. ; Elizabeth, New Jersey, U.S.A.) June 16, 1932, No. 17029. [Class 112.] The electric driving motor 11 of a sewing- machine is mounted on an arm 8 pivoted to the machine frame at 7 and pressed in one direction by a spring plunger 22 to take up belt wear. The motor can be moved against the spring plunger to release the belt 16 from its frictional driving engagement between the pulleys of the motor and the machine shaft 6 by a catch 24, which retains it in this position. A projection 27 on the tail of the catch holds the slack belt up to prevent accidental driving of the machine shaft due to the weight of the slack belt on the motor pulley. In this position a spool may be placed on the end 15 of the motor shaft for winding, without actuating the machine shaft 6.
Patent GB-832740-A (GB)
Title: Semiconductor devices and methods of making same
IPC: H01L29/167
Filed: 1958-05-28
Abstract: 832,740. Semiconductor devices. RADIO CORPORATION OF AMERICA. May 28, 1958 [June 25, 1957], No. 17073/58. Class 37. Rectifying junctions (e.g. PN, NN + and IN) are produced by immersing semiconductor bodies in powdered alloy of semiconductor and donor or acceptor, and heating to effect diffusion for a limited depth into the bodies. The semiconductor may consist of germanium, silicon, the phosphides, antimonides and arsenides of aluminium, gallium and indium, and the sulphides, selenides and tellurides of zinc, cadmium and mercury. In one example, an alloy of 2-20 mgms. of arsenic and 100 gms. of germanium is prepared and pulverized to particles of between 1-15 mils. in diameter. Wafers 12 of intrinsic germanium or other semiconductor are immersed in the powdered alloy 10 which is contained in a quartz tube 11 which is heated in a non-oxidizing atmosphere such as argon, nitrogen or hydrogen, for 75 minutes at 825‹ C. Transistors may be produced by providing, for example, an N-type layer on a P-type body as described above, depositing an aluminium film on, say, ten small areas which make a rectifying contact to the N-type layer, and near each aluminium dot, coating a small area with gold containing 0.5% antimony to make ohmic contact to the N-type layer. The body is then etched to remove the N-type layer except for the resins containing the aluminium and gold dots, and cut to provide ten PNP transistors. The collector electrode to the P-type body may consist of nickel, copper or " Kovar " (Registered Trade Mark). Antimony, phosphorous gallium and indium are also mentioned as suitable impurities.
Patent GB-962947-A (GB)
Title: Improved ringing generator
Inventor: WESTWOOD JOHN WILLIAM
IPC: H04M19/02
Filed: 1962-05-04
Abstract: 962,947. Automatic exchange equipment. ERICSSON TELEPHONES Ltd. Jan. 3, 1963 [May 4, 1962], No. 17133/62. Heading H4K. In a ringing generator of the inverter type, that is, one that in response to a square wave input produces an alternating voltage in the output winding of a transformer, an inductor is connected in series therewith in order to avoid frequency shift should a short-circuit develop, and to improve the wave pattern.
Patent GB-1006897-A (GB)
Title: Improvements in or relating to telecommunications cables
Inventor: MAUND GEOFFREY BASIL
IPC: H01B13/32
Filed: 1961-05-11
Abstract: 1,006,897. Cables. PIRELLI GENERAL CABLE WORKS Ltd. April 16, 1962 [May 11, 1961], No. 17172/61. Heading H1A. An electric cable comprises stranded insulated conductors 6, barriers 36 being formed across the cable at intervals to prevent fluid, leaking into the cable through the cable sheath 35, from migrating along the interstices between the conductors themselves and between the inductors and the sheath. Barriers 36 are formed, as described, Figs. 1a, 1b (not shown), during the process of manufacture of the cable. Fig. 1a shows a conventional stranding machine to which is added an injector head 4 for depositing a barrier forming material. A central insulated conductor 1 is continuously drawn from a supply drum 2 through injection head 4 where deposits are formed on the conductor at intervals, then through a carriage 5 supplying further conductors 6 which are laid on the first conductor. Conductors 1 and 6 are then passed through a shaping die 8 which presses the conductors 6 on to the conductor 1, tapelapping heads 9 wrapping up the thus formed core with tapes. A further embodiment is described, Fig. 1b wherein a second injection head is provided between the shaping disc and tape-lapping heads. Injection heads are synchronized so that barriers formed by the first are built up by the second. The injection head comprises, as shown in Fig. 2, a frustocone 18 with apertured apex through which passes the conductor or conductors, a cap 22 is fitted to the cone snugly so as to leave a passage 23 between them. The passage 23 communicates with a reserve 25 of a barrierforming liquid, which is a cold-setting thermoplastic material, through a hole 27 which is alternately opened and closed by a plunger 29 operated by a " bell and crank " system and a mechanism 15.
Patent GB-578835-A (GB)
Title: Improvements in aerial barrages for use against aircraft
IPC: F41H11/04
Filed: 1937-06-21
Abstract: 578,835. Aerial barrages. ROBINS, H.E.I. June 21, 1937, No. 17218. [Class 9(ii)] A percussion fuze bomb 11 is slidably mounted against the action of a spring 13 on a mounting 5 secured to an aerial barrage cable 3. When the cable is struck by an enemy aircraft, 'the shock wave in the cable effects sliding movement of the bomb and closes electric contacts 7, 17 for firing a charge to part the cable below the bomb. The upper length of the cable is then drawn up and the bomb exploded, by relative movements of.the percussion fuze parts 6, 16, when it strikes the aircraft. For safety reasons, the compression of the spring 13 to operate the fuze is limited until a safety ring 8 is released by the withdrawal of pins 9 anchored to the ground by cables 10.
Patent GB-933399-A (GB)
Title: A process for the production of cobalt with a low nickel content
IPC: C25C1/08
Filed: 1960-05-16
Abstract: 933,399. Separating nickel from cobalt, electrolytically. DUISBURGER KUPFERHUTTE. May 16, 1960 [June 5, 1959], No. 17219/60. Class 41. In the electro-deposition of cobalt, e.g. from anodes containing also nickel and other metals, the co-deposition of nickel with cobalt is prevented by keeping the concentration of dissolved nickel low by adding to the electrolyte gel-like precipitates of iron and/or manganese, which metals are generally present in the anode metal, and are precipitated by adding alkali. The nickel ions are absorbed on the precipitate. Preferably the anolyte is continuously circulated, precipitation effected outside the cell, and the filtrate free from nickel returned to the cell, with added cobalt salts to keep the Co : Ni ratio high. A diaphragm cell is used, to keep the nickel salts concentrated in the anolyte. Alkali metal or alkaline earth metal bases are added to the withdrawn electrolyte containing the cobalt at high concentration, at a pH of 3-6 and at 55‹ C., under which all the nickel but only minor amounts of cobalt are precipitated.
Patent GB-1357997-A (GB)
Title: System for mooring ships
IPC: B63B22/02
Filed: 1972-04-14
Abstract: 1357997 Mooring ships ENTREPRISE DE RECHERCHES ET D'ACTIVITES PETROLIERES 14 April 1972 [16 April 1971] 17288/72 Heading B7S [Also in Division F2] A mooring system comprises a vertical mooring column, 2 and a pair of arms 3, 4 each respectively attached by an articulated joint 7, 8 to a horizontal ring 11 positioned around and rotatable relative to the column. A pair of buoyant berthing caissons 5, 6 are respectively attached by a second articulated joint 31 to the other end of each arm. Flexible couplings 50, 51, 52, 53 join the two arms or the two caissons. The two arms are attached to diametrically opposite points of the ring and the flexible couplings are preferably buoyant.
Patent GB-530528-A (GB)
Title: Improvements in apparatus for short-wave therapy
IPC: A61N1/06
Filed: 1939-06-13
Abstract: 530,528. Electro-therapy apparatus. WALKER, C. H., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. June 13, 1939, No. 17296. [Class 81 (ii)] A high frequency electrode comprises a conducting plate 1 joined to a lead 2 encased in an insulating shank 4, the plate being encased in an insulating shoe 3 and attached to an offset or cranked portion 6 of the encased lead the size and setting of the extension being such that the shoe may be placed in contact with the inner aspect of the gums or teeth. Electrodes may be used in pairs as shown in Fig. 13. Lamps 12, 24 may be included in series with the supply leads as indicators. Specification 525,425 is referred to.
Patent GB-769865-A (GB)
Title: Method of cleaning the electrodes in electrical apparatus
IPC: B03C3/78
Filed: 1955-06-16
Abstract: 769,865. Electrostatic precipitation. AKTIEBOLAGET SVENSKA FLAKTFABRIKEN. June 16, 1955 [July 7, 1954], No. 17345/55. Class 39(1). The electrodes of a precipitator of the plate type are cleaned by a liquid spray system which provides one or more continuously supplied curtains of liquid transverse to the gas flow and more intense intermittently supplied curtains of liquid parallel to the gas flow.
Patent GB-613224-A (GB)
Title: Improvements in or relating to spoons
IPC: B21D53/66
Filed: 1946-06-11
Abstract: 613,224. Tools for grinding and polishing spoons. FAIREST, M. June 11, 1946, No. 17349. [Class 60] [Also in Group XIV] The inner surface of the bowl 24 of a spoon, forming part of a surface generated by a rotating body moving along the length of the bowl, is ground and finished, e.g. by the motion along an orbit 27 of a grinding or polishing wheel 25 rotating about its axis 26, or a spherical tool rotating about any axis through its centre, or a tool having an elliptic, parabolic or cycloidal convex profile, rotating about an axis perpendicular to the length of the bowl. The outer surface of the bowl may be finished by a rotating concave buff moving longitudinally. The longitudinal movements of the tools are preferably actuated by hydraulic power.
Patent GB-814474-A (GB)
Title: Improvements in or relating to gramophone record changing devices
IPC: C02F1/04
Filed: 1956-06-05
Abstract: 814,474. Gramophones. NSM-APPARATEBAU G.m.b.H. June 5, 1956 [July 9, 1955], No. 17372/56. Class 40 (2). A gramophone record changing device for consecutively playing records from a stack of records comprises three rails f of triangular cross-section which are received in grooves in the driving spindle a and are provided with hooked ends d, e, the rails being connected to the turntable h by springs g. The arrangement is such that when a record is freed by the conventional supports i the rails slide down the spindle by one record and the weight of the played records is taken up by the hooks d acting on the top record and hence the supports i whereby the pressure of the pick-up arm k on each record is maintained constant.
Patent GB-941862-A (GB)
Title: Furniture convertible for several uses
IPC: A47B3/00
Filed: 1962-05-07
Abstract: 941,862. Furniture combinations &c. P. J. M. OSCOZ SANCHEZ. May 7, 1962 [March 8, 1962], No 17396/62. Headings A4H and A4W. A table with legs each constituted by two pieces hinged together at 1, 2, 2<SP>1</SP> or at 10, Fig. 16, and having two halves of a cross member hinged at 2<SP>11</SP>, or at 11, Fig. 16, to permit folding has a table top provided in its under face with guide strips 4, 4<SP>1</SP> in which can slide a rectangular piece 6 hinged at 5 to a leg frame cross member to allow the table top on folding to be tilted and slid into a lower position. In a modification Fig. 19 the top 7<SP>1</SP> is rotatably connected to the piece 6 by means 13 the part 6 being slidable in guides hinged to the leg framework.
Patent GB-1274978-A (GB)
Title: Cold setting clay
IPC: C04B26/04
Filed: 1970-04-13
Abstract: 1,274,978. Moulding compositions. MATTEL Inc. 13 April, 1970 [5 May, 1969], No. 17418/70. Heading C3P. A wet plastic composition which dries to a hard rigid state consists of 15 to 90 parts by weight of water, 7À5 to 25 parts by weight of a water dispersible styrene-butadiene copolymer containing 15-85% styrene, and 40 to 135 parts by weight of inert particulate filler having a high affinity for said polymer.
Patent GB-1357998-A (GB)
Title: Door actuating mechanisms
IPC: E05F15/10
Filed: 1972-04-14
Abstract: 1357998 Operating mechanism for sliding doors WESTINGHOUSE BRAKE & SIGNAL CO Ltd 28 Feb 1973 [14 April 1972 18 Nov 1972] 17431/72 and 53431/72 Heading E2M A sliding door operating mechanism comprises an electric motor 1 driving a shaft 4 via a reduction gear box 3; a crank 5 on the shaft acting via pivot pin 6 on one arm 8 of a door operating lever pivoted at 9, a door mounting bracket 15 connected by link 14 to another arm 11 of the operating lever, and biassing means urging the pin 6 overcentre with respect to the shaft 4 and the pivot 9 in the 'closed' position of the mechanism shown to prevent accidental opening. In the embodiment shown the biassing means is a weight arrangement in the gear box 3 and a nylon roller mounted on pin 6 moves along the operating lever toward pivot 9 as the mechanism is moved to the 'open' position (shown dotted). The biasing means may be spring actuated. In a further embodiment (Fig. 2, not shown) the pin 6 moves along the lever in a direction away from the pivot 9 as the mechanism is moved to the open position; and in alternative arrangements (not shown) the pivot 9 may be mounted to move either along the lever, (toward or away from the pivot pin 6) or to be guided in a path on base plate 10. In the event of electrical failure a lever 16, pivoted at 17, can be manually lifted to release it from detent 21 and operated to move the pin 6 out of its over centre position and allow the door to be pushed open. Switches 22 and 24 are engaged by the crank and a cam 24 on the operating lever to interrupt the closing or opening current in the extreme positions, and a switch 23 engaged by the lever 16 open circuits the electrical supply when this lever is moved.
Patent GB-1171682-A (GB)
Title: Improvements in or relating to Folding Machines with Folding Pockets
IPC: B65H45/14
Filed: 1967-04-17
Abstract: 1,171,682. Folding and delivering paper. MATHIAS B€UERLE G.m.b.H. 17 April, 1967 [29 April, 1966], No. 17489/67. Heading B8R. In a buckling folding machine the sheet feed and the first folding pocket 17 are associated with a lower pair of folding rollers 4 and 9, and a second pair of folding rollers 5 and 10, are located above the first. A sheet 16 separated from the top of stack 15 on feed table 14, by feed rollers 11 and 12 is given two parallel folds at folding pockets 17 and 20. The folded sheet passing from between rollers 5 and 10 is received on top of the first pocket 17 against stop-bars 23. Further folding pockets 27 and 28 and associated rollers 25 and 26 may be added. Sheets may be fed manually up to rollers 4 and 9 without touching feed roller 11 and removed by hand after folding.
Patent GB-1094531-A (GB)
Title: Mercury dispenser
IPC: G01F11/16
Filed: 1965-04-26
Abstract: 1,094,531. Delivering measured quantities of liquid. SYLVANIA ELECTRIC PRODUCTS Inc. April 26, 1965 [April 24, 1964], No. 17541/65. Heading B8N. [Also in Division F2] A device 2 for dispensing a measured amount of mercury into an arc tube 6 comprises a reservoir 15 for the mercury 16 adapted to be removably mounted on a machine head 1 carrying the tube and arranged to be movable towards and away from the machine head, means 20 being provided for transferring a predetermined quantity of mercury to the arc tube. The reservoir 15 is mounted in a container 14 secured to a frame 34 adapted to be moved by a ram 29 in order to disengage the end of the container from a seal 31 on a support 12 for the arc lamp 6. A slide 20 is mounted below the reservoir and is formed with a hole 22 for containing a measured quantity of mercury, the slide being moved by electromagnets 27, 28 to bring the hole into or out of alignment with the reservoir and a pipe 23 leading to the tube. When the slide is in the position shown, the measured quantity of mercury is forced by gas pressure into the tube. A number of supports 12 each holding an arc tube are mounted for rotation on a platform 3 and adapted to be brought into alignment with the dispensing device.
Patent GB-1208998-A (GB)
Title: Improvements in the production of laminates from thermoplastic films and elastomer coated fabrics
Inventor: MCCARTHY EDWARD WILLIAM
IPC: B32B27/00
Filed: 1969-04-03
Abstract: 1,208,998. Laminates of thermoplastic films and elastomer coated fabrics. CHEMICAL RUBBER PRODUCTS Inc. 3 April, 1969, No. 17548/69. Heading B5N. [Also in Division F2] A laminate is produced by feeding layers of a flexible thermoplastic film and a fabric coated with a vulcanizable elastomer with bondable adjoining surfaces to a heat expansible drum, wrapping under tension a plurality of layers of combined film and fabric around the drum and subjecting the drum and wrapping to a temperature of at least 200‹ F. for at least one hour to expand the drum forcing the layers together under pressure and to cure and bond the elastomer coated on the fabric to the film. The fabric which may be made from nylon, polyethylene terephthalate or cotton fibres may be coated with neoprene, copolymers of butadiene and acrylonitrile or carboxylated forms of the copolymers and the film may be made from polyvinyl fluoride, fluorinated ethylene polymer or polyethylene terephthalate, the film in the case of polyethylene terephthalate preferably being coated with an adhesive, e.g. a polyester composition. In Fig. 1, coated fabric from drum 10 and thermoplastic film from drum 12 are fed to expansible metal drum 14 around which they are wrapped with separator 28, e.g. silicone-treated paper, from drum 30, back tension being applied to both rolls being laminated by tension means, e.g. air brakes. The fabric and film have bondable surfaces 16 and 18 respectively and surfaces 20 and 22 respectively resistant to bonding, the surface 20 of the coated fabric being dusted with an inert solid, e.g. talc, from container 24 by gravity feed, the rotating brush 26 being provided to remove excess talc. Drum 14 and wrapping are then subjected to a temperature of at least 200‹ F. for at least one hour to expand the drum generating a pressure which forces the layers together during the curing. When the metal drum has cooled the laminate may be unrolled from the drum.
Patent GB-283615-A (GB)
Title: Improvements in and relating to adjustable signs
IPC: G09F7/02
Filed: 1927-08-24
Abstract: 283,615. Tucker, T. L. Aug. 24, 1927. Loose-letter and like signs and notice-boards.- A changeable sign comprises a number of interengaging square-section blocks f each formed with letters or numerals on a number of its sides, and being held in a frame a so that faces of the blocks which abut adjacent blocks can be brought to the front position. The blocks have integral projections and recesses h for engagement with one another and with end locking pieces d, e which are clamped on the blocks by screws k. Side clamping pieces b, c are also provided. The frame a has a backing on which the blocks f lie during adjustment.