baber/WOPTO huggingface dataset:
Patent GB-882836-A (GB)
Title: Method of and means for producing a corona discharge
IPC: B03C3/66
Filed: 1959-06-03
Abstract: 882,836. Converting; charging with static electricity. WEST, M. G. June 3, 1959 [June 4, 1958], No. 19004/59. Classes 35 and 38 (2). A variable high voltage required for producing a corona discharge to charge electro-sensitive photo copying materials or for electrostatic material movement is obtained by generating a variable frequency sawtooth waveform using an oscillating twin-triode valve 15 (Fig. 3), amplifying the sawtooth wave by a valve 18 and feeding the output through transformer 20 and an ignition coil type transformer 21 to a high impedance voltage multiplying and rectifying circuit 22. The oscillation frequency is varied by variation of resistance 16. A heavy duty alternative arrangement (Fig. 4) has a double triode phase splitter valve 38 feeding power valves 39, 40. Fig. 1 shows a charging machine with corona discharge points 1 and a slot 6 through which electro-sensitive photocopying material is fed. The electrostatic charge which it acquires causes the material to be drawn down on to metal roller 5 by which it is friction driven to pass out through slot 7.
Patent GB-1435633-A (GB)
Title: Heat treatment apparatus for synthetic yarn
IPC: D02J13/00
Filed: 1974-05-01
Abstract: 1435633 Heat transfer devices S OI 1 May 1974 [16 May 1973] 19014/74 Heading F4U [Also in Divisions D1 and H5] Apparatus for heating synthetic fibre yarn 14 comprises an elongate closed evacuated vessel 2 provided with a heat exchange surface 1 and which is partially filled with a heat-vapourizable liquid 6, an electrical heater 7 within, and extending upwardly from the lower end of, the vessel 2 for heating the liquid 6 to vapourize the same to heat the surface 1, and a liquid permeable porous body 4 of heat-conducting material extending around the heater 7. In one embodiment, Figs. 1 and 2, the heat exchange surface 1 comprises a yarn contacting plate having a curved surface and optionally a groove formed therein for the passage of the yarn 14. The heater 7 is surrounded by a reticulate mass 4 of fine metal wool and is supported by a metal fitting 5. To control the temperature, a narrow tube 8 extends to a bellows 9 responding to variations of vapour pressure in the vessel 2 to activate an electric converter 10 for turning on or off the electrical source of the heater 7. The upper portion of the vessel 2 communicates with a header 11 through a pipe 12 having a throttle 14 therein. A tube 13 extends from the header 11 into the liquid 6. In use, the large heating area formed by the surface area of the wires of the mass 4 causes a large amount of heat conducted from the heater 7 to be transferred to the liquid 6 to effect vapourization thereof.  In a modification, Fig. 4, the header 11 has a rectangular cross-section and is formed at the top of the vesesl 2. An orifice 14 is formed as a throttle. Two grooves (15), Fig. 5 (not shown), are formed for the passage of the yarn. In another modification, Fig. 6, the header 11 has an upwardly projecting portion 16 from which extends a purge pipe 17 having a closed end 18.
Patent GB-421657-A (GB)
Title: Improvements in or relating to electromagnetic means for reciprocating tables, screens, trays and the like
IPC: H02K33/02
Filed: 1933-07-06
Abstract: 421,657. Reciprocating machines. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and SHERWEN, J. W., Fraser & Chalmers Engineering Works, Erith, Kent. July 6, 1933, No. 19154. [Class 35] [See also Group II] Screens, trays &c. of concentrating, sifting, conveying, moulding, pulverizing, crushing &c. apparatus are reciprocated by means of electromagnets energized from an alternating current circuit through a rectifier which suppresses every halfwave in one direction, so that the frequency is in effect halved ; the screen &c. is controlled by springs adjusted to give a frequency equal to that of the modified current and this frequency can be further regulated by superimposing a constant current on the alternating current. Fig. 1 shows a circuit suitable for the purpose. The terminals 3 of the current supply are connected to the windings 2 of the electromagnet through a set of rectifiers 4 so arranged that current can only pass as indicated by the arrows. Figs. 2 and 3 show the invention applied to a sieve. The coils 2 and cores 1 are carried on a fixed frame 6 to which the armatures 5 are attached by a bar 8 and hickory springs 9. The bar 8 is secured by rods 10 to a cross-piece 11 on the screen frame 12, and the cross-piece 11 is resiliently connected to a fixed buffer plate 13 through springs 14, 15. These springs are so arranged that when no current passes the armature 5 is maintained at a distance from the cores 2 and the period of oscillation is regulated by adjusting the tension of the springs and passing a constant current through the coils 1.
Patent GB-853807-A (GB)
Title: Improvements relating to the spinning of filaments by the viscose process
IPC: D01D5/14
Filed: 1958-06-16
Abstract: <PICT:0853807/IV(a)/1> In the spinning of viscose, filament tows issuing from a plurality of spinnerets in a precipitation bath are united while travelling upwards and thereafter, while between two pairs of stretching rollers mounted vertically one above the other, are sprayed from both sides with decomposition bath liquid so that the liquid runs downwardly in countercurrent to the filaments and can be discharged at the commencement of the stretching zone. Preferably, the filaments are united in a flat web.  As shown, wide jet nozzles 1 provide flat filament webs 2 which pass upwardly through the precipitation bath (not shown), through a stripper 3 which removes excess liquid, and around stretching rollers 4 and 7, the combined filament web being guided vertically upwards by the deflecting roller 5.  Nozzles 8 spray the web with decomposition bath liquid which runs downwardly and is collected in channel 10 and discharged through pipe 11.  Stripper 9 prevents the bath liquid from being entrained upwardly.
Patent GB-184165-A (GB)
Title: Improvements in atomizers for use in oil burning furnaces
IPC: F23D11/10
Filed: 1922-07-12
Abstract: 184,165. McDonald, J., and Haynes, G. P. July 30, 1921, [Convention date]. Air and steam pressure sprayers; nozzles for producing whirling sprays.-A liquid-fuel atomizer comprises a body 1 having fuel and atomizing agent passages 2, 6, a coupling member 12 secured on the body 1 and having a conoidal element 13 projecting into a corresponding depression 5 in the body 1, a pipe 19 carried by a delivery portion 18 on the member 12, and a burner tip 20 mounted on the pipe 19. The fuel passes through the angled passage 2 to the passage 15 between the conoidal element 1 and the depression 5 and is initially broken up and whirled by steam or air from the passage 6 entering the passage 2 through tangential apertures 10 which are inclined so as to be in line with the conical passage 15. The whirling film is further pulverised in the passage 15 by steam or air entering from a series of apertures 11 and flows round an annular recess 22 in the member 12. The recess 22 is curved so as to cause the fuel mixture to dash up against a concave depression 16 in the forward face of the element 13 before passing through the delivery portion 18 and the pipe 19 to the burner tip 20.
Patent GB-743182-A (GB)
Title: Improvements in speed measuring devices for flexible elements
Inventor: DOYLE PATRICK JOSEPH
IPC: B65H61/00
Filed: 1952-07-30
Abstract: 743,182. Electric indicating system. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 30, 1953 [July 30, 1952], No. 19200/52. Class 40(1) For measuring the speed of a running filament Y. a pistol grip 21, Fig. 7. is positioned so that the filament or yarn passes between a light weight pulley 1 and guide pulleys 13, 14. The trigger 17 is then retracted to move the guide pulleys to the position shown dotted through spring biased links 18 and slides 15. 16, so that the yarn engages a substantial portion of the periphery of the pulley 1 and drives it at a speed proportional to the yarn speed. The pulley 1 drives a commutator 6. Fig. 4. which alternately charges a condenser from a battery and discharges it through an ammeter M which deflects according to the pulley and hence the yarn speed. Alternatively, the condenser G, Fig. 5 may discharge into a larger condenser LC which discharges continuously through a resistor R in series with the meter M to give an average speed reading over a fixed time period. Various condensers may be provided and adanted to be switched into circuit selectively. Fig. 6 (not shown). to cater for different speed ranges. Current is led to the commutator 6 by spring biased contact strips through rotatable ball races, Fig. 2 (not shown). Ari eddy-current or photo-electric type of tachometer may be used in lieu of that shown.
Patent GB-639265-A (GB)
Title: An improved process for the separation and recovery of radio active isotopes of elements and the decay products thereof
Inventor: WALSH CONRAD LAWRENCE
IPC: G01N23/00
Filed: 1947-07-17
Abstract: A process for the selective separation and recovery of radioactive decay products from elements, particularly those of high mass or atomic numbers such as uranium and thorium, comprises forming a salt such as the nitrate or acetate of the element, passing a solution of said salt through a column of synthetic organic cation exchange material, e.g. the reaction product of formaldehyde with a phenol or substituted phenol, having exchangeable non-radioactive or relatively non-radioactive cations such as hydrogen, sodium or calcium, continuing the passage of the salt solution to effect separation of the more strongly radioactive elements by ion-exchange with those of lesser or non-radioactive properties absorbed originally from the salt solution, and finally recovering the radioactive materials from the ion exchange material.  Recovery may be by treatment with an acid, base, salt or basic salt, or by oxidizing the exchange material with say nitric acid.  The concentration of the salt solution employed may vary from extreme dilution to 1N or more. The cation material may be used in its natural form or it may be first treated with an acid, salt, base or basic salt.  Examples relate to the treatment of uranium nitrate and thorium nitrate solutions; the results of a Geiger-Muller count on oxides precipitated respectively from the original solution and the effluent solution, and on successive portions of the exchange column are tabulated.
Patent GB-293354-A (GB)
Title: Improvements in side screens or curtains for road vehicles
IPC: B60J1/08
Filed: 1928-07-03
Abstract: 293,354. Hall, J. R., McLeod, K. C., and Reatley, O. B. July 4, 1927, [Convention date]. Windscreens.- Detachable windscreens for road vehicles comprise detachable pillars mounted on the sides of the body or on the doors each pillar 1 having hinged thereto front and rearwardly extending sections 2a, 2b adapted to be clamped in any desired position. The pillar 1 is mounted in a socket 1<c>, Fig. 6, by means of an off-set portion 1<a>, 1<b> and the screensections are provided with frames 3, Fig. 5, hinged at 6 to the pillar 1, clamps 7, 7a being provided. Flexible marginal flaps 4 are provided and the screen sections are adapted to be turned through 180‹. The screen sections may be mounted on separate adjacent pillars instead of on one.
Patent GB-963631-A (GB)
Title: Phosphorylated urethanes
IPC: C07F9/6533
Filed: 1963-05-15
Abstract: The invention comprises phosphorylated urethanes of formula: <FORM:0963631/C1/1> where R1 and R2 are each C1- 4 alkyl, R3 is hydrogen or C1- 4 alkyl and R4 is C1- 4 alkyl, or R3 and R4 may, together with the nitrogen atom, form a saturated ring which may be interrupted by further hetero atoms, e.g. O, S or N.  They are prepared by reacting a dialkyl 1-hydroxy-2,2, 2-trichloroethyl-phosphonate with phosgene, preferably in the presence of a tertiary base, to give a chloroformic ester of formula: <FORM:0963631/C1/2> and reacting this with an amine R3R4NH. Compounds of formula II in which R1=R2=CH3 or C2H5 are prepared as starting materials in examples.ALSO:Pesticidal compositions comprise, together with a solid or liquid carrier, a phosphorylated urethane of formula <FORM:0963631/A5-A6/1> where R1 and R2 are each C1-4 alkyl, R3 is hydrogen or C1-4 alkyl and R4 is C1-4 alkyl, or R3 and R4 together with the nitrogen atom form a saturated ring which may be interrupted by further hetero atoms, e.g. O, S or N (for preparation see Division C2).  Solutions and emulsions are mentioned.  Other insecticides and/or fertilizers may be present.
Patent GB-822211-A (GB)
Title: Improvements in or relating to electric circuit arrangements for the control of stage lighting and analogous uses
Inventor: DUNHAM CARLTON ROSSLYN
IPC: H05B37/02
Filed: 1957-06-19
Abstract: 822,211. Supply and control systems for stage lighting equipment. GENERAL ELECTRIC CO. Ltd. June 19, 1958 [June 19, 1957], No. 19352/57. Class 38 (4). A circuit arrangement for the control of stage lighting or similar apparatus in which combinations of states of brightness of the lighting can be pre-set by setting up suitable electrical connections and in which the transition from one state of brightness to another can be made smoothly and quickly comprises two transformers A, B, the primary windings of which are connected in series across an alternating current supply XY and an autotransformer W also connected across the supply, an adjustable tapping T on the autotransformer W being connected to the connection between the primary windings of the transformers A, B. The secondary windings of the transformers A, B are provided with a number of fixed tappings which are connected in any desired fashion to the terminals on a control panel P, these terminals being also connected to the contacts of a number of switches SL, SM, SN, the movable arms Sa of which are ganged together and control the a windings of the controlled elements LC, MC, NC, the movable arms Sb being ganged together and arranged to control the b windings of these elements. Thus the voltages selected by the connections between the transformers A, B and the panel P are supplied as desired to the windings a, b by suitable operation of the switches SL, SM, SN and these voltages may be smoothly varied by movement of the tapping T along the autotransformer W whereby the voltages applied to the primary windings of the transformers A, B are simultaneously varied in opposite senses. A potential divider may be employed instead of the autotransformer W and a voltage distributing arrangement instead of the transformers A, B. The tapping T may be motor-driven and the switches SL, SM, SN automatically operated. The windings a, b may be the primary windings of transformers the secondary windings of which may be associated thyratron or saturable reactor circuits to vary the lighting brightness.
Patent GB-262723-A (GB)
Title: Improvements in methods of making tools from hard metal alloys produced by sintering
IPC: C22C1/05
Filed: 1926-08-05
Abstract: 262,723. Krupp Akt.-Ges., F. Dec. 12, 1925, [Convention date]. Tools.-In a process for making tools from hard masses produced by sintering, solid bodies produced by pressing a mixture of a hard powder such as tungsten carbide or molybdenum carbide and softer powders such as cobalt, nickel, or iron, are sintered at 700-1100‹ C., shaped as far as possible, further sintered at a higher temperature, and finished by smoothing &c.
Patent GB-706044-A (GB)
Title: Improvements in power-transmission mechanism
IPC: F16H3/14
Filed: 1951-08-16
Abstract: 706,044. Reverse-gear control. SINCLAIR, H. Aug. 16, 1951, No. 19386/51. Addition to 629,725. Class 80 (2) The reverse gear of the parent Specification is now driven by an engine, which although capable of delivering substantial drive torque in both directions, is desired to deliver drive torque only in one direction. Synchronizing the reverse-gear by temporary reversal of the input shaft is effected either by the auxiliary drive whilst the engine still rotates forwards, or by temporarily reversing the engine, e.g. by compressed air in the case of a Diesel engine.
Patent GB-200701-A (GB)
Title: Improvements in the treatment of sulphide ores and equivalent metal-bearing materials for the recovery of useful products therefrom
IPC: C22B1/08
Filed: 1922-07-14
Abstract: Sulphur chlorides may be obtained by passing chlorine into a solution of sulphur in sulphur chloride at 140 DEG  C., a product containing 40 per cent of sulphur and 60 per cent of chlorine being obtained. The same product may be produced by supplying sulphur to a fused electrolyte of metallic chlorides at 420 DEG  C., the sulphur chloride distilling off.  Specification 210,011, [Class 41, Electrolysis], is referred to.ALSO:Lead-zinc sulphide ores and the like are treated with sulphur chloride at temperatures much below 500 DEG C. such as 50-150 DEG  C. or even 250 DEG  C., so as to chlorinate the lead and silver selectively, the bulk of the zinc sulphide being unchanged.  The p  sulphur chloride may be made by passing chlorine into a solution of sulphur in sulphur chloride at 140 DEG  C., a product containing 40 per cent of sulphur and 60 per cent of chlorine being obtained, or the same product may be made by introducing sulphur into a fused electrolyte of the metallic chlorides at 420 DEG  C., the sulphur chloride distilling off.  The sulphur chloride after the chlorination of the ores contains dissolved sulphur derived from the ore and from the sulphur chloride, and sulphur may be crystallized from it.  The residue after the separation of the sulphur chloride consists of gangue, unchanged zinc sulphide, and chlorides of lead and silver.  The chlorides are removed by washing with hot zinc chloride solution, or lead chloride may be removed by hot water.  Or the residue may be treated with fused zinc chloride with or without an alkali choride to dissolve the chlorides and the solution is then electrolyzed, for instance as described in Specification 210,011.  According to the Provisional Specification, if the ore is finely ground and a solution of sulphur in sulphur chloride having a high boiling point is used at 200-300 DEG  C., a large proportion of the zinc is converted to chloride. Specification 198,024, [Class 39 (iii), Heating by electricity], also is referred to.
Patent GB-1511793-A (GB)
Title: Formation of batts from fibres
IPC: D04H1/72
Filed: 1976-05-11
Abstract: 1511793 Producing batts E I DU PONT DE NEMOURS & CO 11 May 1976 [13 May 1975] 19422/76 Heading DIN Batts are formed by an apparatus comprising an upright chute with a conveyor 30 at the bottom to receive fibers and an exit opening for the formed batt, air being directed across the top of the batt within the chute to maintain a uniform height at the exit. The air enters through jet holes 34 in an adjustable weir plate 32. The batt leaving the chute is compacted by a vibrating plate 42 and/or conveyor 44. Air exit openings are provided at 36 and 45. Fibre is conveyed to the chute by pneumatic pipe 10 air being extracted in condenser 12. The fiber then enters the chute over paddle device 38, or a vibrating baffle, and a fixed baffle 40. Examples are given indicating the batt uniformity obtained. The batt is for feeding a web former.
Patent GB-663633-A (GB)
Title: Improvements in and relating to remote control switch devices
IPC: H02J13/00
Filed: 1948-07-21
Abstract: 663,633. Actuation of switches. MEILI, E. July 21, 1948. [July 25, 1947] No. 19555/48. Class 38 (v). [Also in Groups XXXVIII and XXXIX] The operation of a selected switch or contact unit in a remotely controlled selector device is determined by the duration of a control signal superimposed on the supply mains. In Fig. 2 the device comprises a moving disc S which is driven against the bias of a return spring F2 by a motor or other driving means so long as the control signal is maintained. Mounted on the disc S are two pivoted levers K, K<SP>1</SP> which are held against either stops B1, B<SP>1</SP>1 or B2, B<SP>1</SP>2 on the disc by springs F1, F<SP>1</SP>1. Pins St, St<SP>1</SP> on the levers project into the plane of fixed switch units, which have operating levers H1 ... H3 enclosed on one side by guide pieces Gl ... G3. On the receipt of a control signal the disc S rotates and the pins St, St<SP>1</SP> slide past the guides G1 ... G3. If, for example, it is desired to operate the first switch unit, the signal would be interrupted when the pin St has just passed beyond the guide G1. The spring F2 then turns the disc backwards until the pin St turns the switch operating lever H1, the disc now remaining at rest with the pin St abutting the lever HI. A further control signal may now be applied so that a further switch unit may be operated, or to return the lever H1 back to its original position by interrupting the further signal when the pin St<SP>1</SP> has passed beyond the guide G1. To reset the device, a comparatively long signal is applied, which causes the disc S to turn until the levers K, K<SP>1</SP> engage with fixed guides E, El, which move the levers apart so that they abut their stops B2, B<SP>1</SP>2, where the pins St, St<SP>1</SP> are out of their operative positions. Then on the interruption of the signal the spring F2 returns the disc S to its starting position where further fixed guides A, A<SP>1</SP> restore the levers K, K<SP>1</SP> to their original positions. In a modification, Fig. 1 (not shown), a switch arm having a single lever K is used in place of the disc and the guide pieces are omitted, the lever K operating the switch levers on the return movement only, as above, or alternatively on both the forward and return movements. The device may be directly driven by an electric motor, which is energized during the receipt of the control signals, or alternatively a continuously running synchronous motor may be coupled electromagnetically to the device when the coil of the electromagnet is energized during the receipt of the control signal, but in any case the drive is controlled by a glow relay which is in a firing condition only during the receipt of a control signal, Fig. 3 (not shown) (see Group XXXIX or XXXVITI).
Patent GB-1143457-A (GB)
Title: A getter-ion pump
IPC: H01J41/20
Filed: 1967-04-27
Abstract: 1,143,457. Ion pumps. LEYBOLD HOLDING A.G. 27 April, 1967 [28 April, 1966], No. 19573/67. Heading H1D. The anode 6 and cathodes 4, 5 of a getter-ion pump extend into the fringe portion of the field established between magnet pole faces 1 and 2. The cathodes 4, 5 are plates. The anode 6 may be a circular or rectangular spiral with the outer turns more widely spaced than the centre turns, or a circular or rectangular multi-cellular arrangement comprising a central array of cells of uniform size surrounded by rows of cells of progressively larger size in accordance with the asymmetry of the fringe field (Figs. 2 and 3, not shown). The lowest field intensity in which a discharge is sustained is of the order of 500 Oersted.
Patent GB-147620-A (GB)
Title: Improvements in grappling tongs
IPC: B65G7/12
Filed: 1920-07-08
Abstract: 147,620. Geist, J. Jan. 10, 1914, [Convention date]. Lifting-dogs and the like.-The jaws a, b of the tongs are connected directly and by a link h, respectively, to pivots f, g on a holder c which may be fitted to a handle d and terminates in a spike e or barbed or other hook. Alternatively, the holder c may have an eye for attachment to a chain or rope. The tongs may be opened by a spring. In a modification, the pivot of the jaw a is not on the holder, but is at the junction of two links which are themselves pivotally mounted on the holder.