baber/WOPTO huggingface dataset:
Patent GB-1477928-A (GB)
Title: Energising circuit for gas discharge lamps
IPC: H05B41/24
Filed: 1974-06-28
Abstract: 1477928 Dimming discharge lamps LUTRON ELECTRONICS CO Inc 28 June 1974 [27 Aug 1973] 28838/74 Heading H2H [Also in Division G3] In a gas discharge lighting system, at least one discharge lamp 130 is supplied with high frequency pulses (10-100 kHz) by means of a transistor chopper 116 so as to provide pulses from a D.C. supply 112, the magnitude of the base current being modulated so that the average collector current, and hence the light output, is adjusted. The pulses are preferably no greater than 30 Ás so that the lamp exhibits less negative resistance and thus needs no inductive ballast. The average lamp current is preferably monitored and used to control the average magnitude of the saturating base current pulses so as to keep the light output constant for any given brightness setting. As described, the D.C. supply 112 is formed by a bridge rectifier. Two parallel-connected chopping transistors 116, 117 are employed, feeding two lamps having a current balancing inductor 140 terminal C of which is arranged to return current to ground via transistor 180. The voltage across transistor 180 is rectified at 187 to provide a voltage proportional to average lamp current which is fed to transistor 186 so as to control the magnitude of 30 Ás pulses from a 20 kHz oscillator comprising transistors 153, 154. The pulses are coupled via transistor 170 and transformer 171 to terminals A, B feeding the base/emitter paths of the chopping transistors 116, 117. Dimming.-Variable resistor 181 adjusts the impedance of transistor 180 and so enables the average lamp current to be reduced. Over-voltage protection.-The voltage at terminal A is rectified by diode 196 and charges capacitor 200 with a voltage which is fed to transistor 195 which, if the voltage across the chopping transistors 116, 117 is excessive, reduces the drive pulses from the oscillator 153, 154. Reducing radio interference.-The current in the lamps 130, 131 is arranged to flow in opposite directions so as to reduce interference.
Patent GB-1409599-A (GB)
Title: Removal of ammonia and organic impurities from an ammonia plant effluent
IPC: B01J23/34
Filed: 1973-06-19
Abstract: 1409599 Purifying NH 3  plant effluent STANDARD OIL CO 19 June 1973 [22 June 1972] 28937/73 Heading C1A A gas stream containing at least 90% by vol. steam and 0À1-10% by vol. of NH 3  and/or organic compounds with up to 6 carbon atoms is contacted with a catalyst containing the oxides of Cu, Fe, Mn, Bi, Ni, Co, U, Mo, V, Cr, W, Pd, Pt, Ag, Zn, alkali metal, alkaline earth metal, Sn and/or Sb at a temperature of 200-800 C. to oxidize the NH 3  or organic compound, wherein the said gas stream is obtained as a result of (a) stripping a hot K 2 CO 3  solution to form a gas stream containing H 2 O, CO 2 , together with NH 3  and/or the organic compounds, (b) condensing or washing the gas stream with H 2 O to form an aqueous stream containing NH 3  and/or the organic compounds and (c) steam stripping the aqueous stream to obtain the said gas stream containing NH 3  and/or the organic compounds. O 2  in the form of air is preferably added to the gas stream prior to catalysis. The K 2 CO 3  solution containing the CO 2  together with NH 3  and the organic compounds may be that formed on scrubbing a gas stream formed on catalytic oxidation of CH 4  with steam and air to form H 2  and CO 2 , in which case the organic compounds are CH 3 OH, HCOOH and HCHO.
Patent GB-248099-A (GB)
Title: Improvements in dry cells and their formation into batteries
IPC: H01M6/32
Filed: 1924-12-03
Abstract: 248,099. Vignon, H. Dec. 3, 1924. Cells; electrodes; electrolytes.-The. electrolyte 7 of a dry cell is placed in a dry form above the absorbent material 2 and depolarizer 3. The zinc container 1 projects at the top of the cell to form a receptacle 6 into which water is poured when the cell is required for use. A perforated washer 8 keeps the electrolyte in position. The upper part of the container 1 is coated with paraffin 9 and is surrounded by a rubber ring 11 serving as adistance piece to separate adjacent cells. The connections 4<a>, 12 to the carbon and zinc electrodes are made at the opposite ends of the cell, which is provided with a wax coating 13.
Patent GB-620035-A (GB)
Title: Improvements in or relating to suction dredgers
IPC: E02F3/90
Filed: 1945-11-02
Abstract: 620,035. Suction dredgers. SMIT'S SCHEEPSWERVEN N. V., J. & K. Nov. 2, 1945, No. 29079. Convention date, June 24, 1940. [Class 68 (i)] Relates to a suction dredger with a cable - supported flexible suction tube, the rotatably supported rear end of which is movable in vertical guides in the side of the dredger vessel, wherein means are provided for moving the tube from an inclined to a horizontal position, or vice versa, vertically lifting or lowering the tube, moving the tube inboard or outboard, and lowering the tube on to supports or raising it therefrom the invention consists in the provision of a single-drum winch at each suspension point of the tube, each winch, except if desired that supporting said rear end, being separately driven by an electric motor, and means being provided controllably to correlate the speed of said motors. As shown, each suction tube 2 is supported by cables 3 passing over pulleys on rolling stands 7, 8, to single drum winches 10 ... 13, winches 11 ... 13 being driven by separate three-phase, variable-speed electric motors, and winch 10 being driven from winch 11 when desired through an electromagnetic clutch 15 ; the front portion 6 of each tube is capable of independent swinging movement through differential gear 29. Motor control means are provided which, in one position of adjustment, drive the motors each at a different speed to swing the tubes into horizontal position ; in a second position of adjustment, clutch 15 is engaged and the motors are all driven at the same speed to raise the tubes until tackle blocks 18, 30, engage abutments and operate switches 19 to stop the winches, switch 19 on rolling stand 8 being a master switch controlling switches 19 on rolling stands 7 ; in a third position of adjustment, the cables 3 rock the rolling stands to move the tubes inboard, the rolling stands being then held by pawls 20 ; in a fourth position, the tubes are lowered on to supports. In the reverse movements, after raising the tubes from the supports, the pawls 20 are freed by an electric jack to permit the rolling stands to rock and move the tubes outboard. Each rolling stand 8 carries an extension 23 of the guide for the rear end of the respective tube; racks 24, 25, and pinions 26, 27, maintain the extension vertical during rocking of the rolling stand. Manually-operated means 28 are also provided for lifting &c. the tubes.
Patent GB-752997-A (GB)
Title: Improvements in or relating to gearless differentials
Filed: 1954-10-08
Abstract: 752,997. Differential gearing. MAAG GEAR WHEEL & MACHINE CO., Ltd. Oct 8, 1954 [Oct. 12, 1953], No. 29101/54. Class 80(2) Differential gearing comprises an internally-recessed outer member 93, Figs. 12, 14, integral with the driving gear 120, an externally-recessed inner member 96 splined on one half-axle 97, and an intermediate member 94 which is splined on the other half-axle 95 and which has radial slots guiding plungers 92 or rollers each of which engages the recessed surfaces of both members 93, 96. The number of recesses on member 96 is less than half the number of recesses in member 93, both these numbers preferably being even, e.g. six and fourteen, while the number of plungers 92 is equal to the difference between the numbers of recesses. This arrangement ensures that torque is always applied to both halfaxles, so preventing wheel spin. Two side members 98'. 99' of unequal diameters, are secured to gear 120 by inclined screws 100, this arrangement allowing the hypoid pinion 119, driving the gear 120, to be mounted between two bearings 122, 123 disposed on opposite sides of the axis of the halfaxles, while the bearings 125, 126 for the side members 98<SP>1</SP>, 99<SP>1</SP> are both on the one side of the pinion shaft 127. In the constructions shown in Fig. 9, the side members are of equal diameter and are fastened to the gear 120 by rivets 82. The spaces between spokes 86 of the side members provide for the passage of lubricant, facilitated by bevelling the leading edges of the spokes.
Patent GB-965414-A (GB)
Title: A clearer roller for spinning frames, more particularly fly frames or like
IPC: D01H5/64
Filed: 1960-08-24
Abstract: 965,414. Clearing drafting rollers. E. JACOBI, and H. BECK, trading as ERNST JACOBI & CO. K.G.]. Aug. 24,1960 [Sept. 3, 1959], No. 29189/60. Heading D1D. A clearer roller for one or more top or bottom rollers of a drafting head is alternately stopped and rotated by automatic means, means also being provided to remove the fly stripped by the clearer roller. In Fig. 1 lower rollers 3 and upper rollers 3<SP>1</SP> are cleared by clearer rollers 1 and 1<SP>1</SP> respectively. Ratchets 4 and 4<SP>1</SP> are fast on these rollers and are engaged by pawls 5, 5<SP>1</SP> which are adjustably mounted on brackets fixed to a lever 6. The lever 6 has a spring tongue 8 adjustably fastened to it and is made pivotable either by the resilient engagement of the tongue 8 with the smooth part of a feed roller 3<SP>11</SP> as shown or by rigidly clamping the tongue 8. The lever 6 is periodically lifted by a cam 7 on the lower roller 3, so that the pawls are disengaged from the ratchets and allow the clearer rollers to be rotated by their associated drawing roller until the pawls are again lowered. Alternative means for lifting the lever 6 may be provided independent of the machine drive and may have an adjustable time control. The clearer rollers have fly removed therefrom by suction devices 10. In a further form an edge clearer roller is provided i.e. one having concave surfaces of the same curvature as the roller with which it is associated. In this case the clearer is lifted away from its associated drafting roller, rotated through an appropriate angle and shifted back into contact with the drafting roller.
Patent GB-1189504-A (GB)
Title: Xerographic Plates and Process
IPC: G03G5/06
Filed: 1967-06-23
Abstract: 1,189,504. Xerographic plate. RANK XEROX Ltd. 23 June, 1967 [28 June, 1966], No. 29212/67. Heading H1K. [Also in Division C7] A xerographic plate is produced by coevaporating selenium or an alloy thereof and at least one organic dye sensitizer and depositing the vaporized selenium and dye on to a conductive member. The conductive member is held on a water-cooled platen in a heated vacuum chamber containing separate sources of dye and selenium. The member is shielded whilst the two sources are heated to give a steady state equilibrium condition. The conductive member may be Al, Ni, Cr, Zn, stainless steel or glass coated with Al or SnO, whilst the dye may be phloxine B, tetrabromofluorescein, dichlorofluorescein, fluorescein, crystal violet, rhodamine B, rose bengal or mixtures thereof. At least one electron-acceptor dye may be incorporated together with at least one electron donor dye. Alloys of selenium containing minor amounts of As, S and Te may be used, wherein the minor constituent may be evaporated from a separate vessel or in alloy form.
Patent GB-332464-A (GB)
Title: A veterinary remedy
IPC: A61K36/15
Filed: 1929-09-26
Abstract: 332,464. Leahy, T. Sept. 26, 1929. Hypodermic injections.-A remedy for hypodermic injection into cattle for the treatment of contagious abortion, rheumatism, and debility consists of lysol, liniment of iodine and turpentine.
Patent GB-339702-A (GB)
IPC: G08B13/26
Filed: 1929-09-28
Abstract: 339,702. Briot, P. J. Oct. 1, 1928, [Convention date]. Burglar and like alarms.-An apparatus for signalling the approach of a person towards a zone or object to be protected, comprises a single oscillating circuit a - - d, consisting of two capacities c, d, in series, the common point k of which is connected to the grid g of a triode valve e, f, g, a self-inductance in two equal parts a, b being connected across the said capacities and connected at J to the source i of filament supply, so that high frequency tensions transmitted by the condensers c, d to the grid g are in opposition. One of said two condensers, i.e. c, is varied by the approach of a person and thus causes variations in the anode current of the valve, which current is utilized to control a signalling apparatus for indicating the presence of said person. If the condenser d is adjusted to be much smaller in value than the capacity c in the normal undisturbed position, the grid connection K is, in effect, carried to the point L and the arrangement oscillates strongly. Since the grid leak r is a high resistance these oscillations charge the grid g negatively and thus reduce the anode current to a very low value. As the capacity c decreases on the approach of a person the oscillations are damped until, when the capacity c is equal to that of the condenser d, the arrangement ceases to oscillate and the anode current which controls the signalling device attains its maximum value. Further decrease in the capacity c causes no further increase in anode current and the arrangement functions as a neutrodyne. The device may function in the reverse order by arranging that the capacity c increases with the approach of a person and initially adjusting the capacity d to be equal to or greater than the capacity c. The capacity c may be formed by the body to be protected and a body having a capacity with it, such as earth.
Patent GB-196949-A (GB)
Title: Improvements in the construction of wings of aeroplanes, seaplanes and like aerial machines
IPC: B64C9/24
Filed: 1921-11-05
Abstract: 196,949. Thomson, B., and Hawker Engineering Co., Ltd., H. G. Nov. 5, 1921. Planes and the like, construction of; steering, balancing, and regulating altitude.-In a plane formed with a slot near the leading edge extending transversely of the line of flight, means are provided for closing both the upper and lower openings of the slot. The auxiliary wing section 3, Fig. 1, between which and the main wing 1 the slot 4 is formed, comprises two parts 5, 6, the part 5 being mounted upon a spindle 7 carried by an extension spar 15, and the part 6 being rotatable about a spindle 8 on the part 5. In one position the two parts 5, 6 fit into one another and form a stream-line surface, but when an operating rod 9 is moved to the left, rotation of the triangular plate 13 about its pivot 14 rotates the part 6 by means of a pin 17 sliding in a slot on the extension 15, thereby closing the lower opening of the slot 4, whilst the upper opening is at the same time closed by the part 5 which is rotated about the spindle 7 by a link 16. In the modified form shown in Fig. 3 the two parts 5, 6 are mounted upon fixed pivots 20, 21 carried by an extension of the main wing structure. Movement of the operating rod 22 rotates the bell-crank 23 about its pivot 24, and through a link 25 brings the part 5 across the upper end of the slot 4. The outer extremities of both parts 5, 6 are pressed together under the tension of a spring steel U-channel 26 attached to the lower part 6, so that the movement of the part 5 causes the part 6 to rotate simultaneously about its pivot 21 and cover the lower end of the slot. Both sections may be mounted upon a tube forming a common pivot or the two parts may be separately pivoted upon a member so shaped that when the sections are together the whole forms a stream line surface. One, Provisional Specification states that the two auxiliary wing parts may be actuated separately, or the slot may if desired be only partly closed by the operating means.
Patent GB-285967-A (GB)
Title: Improvements in and connected with pumps and like apparatus for supplying measured quantities of liquid
IPC: B67D7/16
Filed: 1926-11-23
Abstract: 285,967. Tritch, D. T. Nov. 23, 1926. Vacuum apparatus. - In apparatus wherein a single measuring chamber may be put into communication selectively with a number of sources of supply, the selection is performed by means of a rotary plug cock having a single port 23 controlling the passage of liquid from a number of supply pipes 20 to a pipe 6 communicating with the measuring chamber 1. The plug 22<x> is rotated by a shaft 26 through gears 24, 25 and further gearing 27 sets a disc 44 to indicate the kind of liquid being supplied. An electric or other form of indicator may be used in place of the disc. The liquid is raised to the measuring chamber by a suction pump set in operation by the manipulation of a switch in the casing 80, a valve 82 being simultaneously closed to prevent ingress of air to the vacuum pipe 13.
Patent GB-187856-A (GB)
Title: Improvements in hand embroidery frames
IPC: D05C1/02
Filed: 1921-11-09
Abstract: 187,856. Whitehead, W. Nov. 9, 1921: Sewing, work-holders for.-A pivotally. mounted hand embroidery frame, Fig. 1, can be fixed in any required position and the distance apart of each end of crosc-members 11, 17 can be independently adjusted to tension the foundation 13, attached to the members 11, 17. The member 11 slides on end-members 5 and can be positioned by placing split-pins 16 in holes 10 in the members 5. Bolts 18 on the member 17 pass through eyes 19, removably fixed in a pair of the holes 10, and the member 17 can be adjusted by means of nuts 22 on the bolts 18.
Patent GB-263475-A (GB)
Title: Improvements in and relating to the manufacture of shoe stiffeners
IPC: A43B23/08
Filed: 1926-11-26
Abstract: 263,475. Daly, J. J. April 12, 1926, [Convention date]. Stiffeners.-Shoe stiffeners scarfed on two edges are produced by longitudinally slitting stiffener material 1, Fig. 1, either by knives diagonally disposed or by passing the material over the knife first one way and then the other, turning the material over meanwhile. The scarfings, 3, Fig. 2, are located on the same side of the strip but on opposite edges, adjacent front and rear. In the case of thermoplastic stiffeners a hot kuife is used, heated by electricity or gas. A strip 2, Fig. 2, shown scarfed at 3 is stamped transversely across the bevelled edges into individual box toe blanks. The invention is applicable to box toe and various other shoe stiffeners and counters.
Patent GB-480033-A (GB)
Title: Improvements in or relating to delivery apparatus for packages stacked in a pile
IPC: G07F11/04
Filed: 1936-11-04
Abstract: 480,033. Coin - freed article - delivery apparatus. SILCOCK, F. Nov. 4, 1936, No. 29985. [Class 27] [Also in Group XVII] Packages 10, Fig. 1, such as cigarette cartons, are stored in. staggered formation in a cage 9 provided with angled guides 11a, 11b in which the corners of the packages fit, the cage being carried by a ring 7 which is connected by posts 6 to a table 4 rotatably mounted by a boss 5 on a vertical rod 1, so that the stack can be rotated as a whole. The packages of each successive pair are staggered at a small angle of less than 45 degrees, as shown in Fig. 2. The bottom package located in an aperture in the ring 7 corresponding to the shape of the stack rests on flanges 16 providing the flat top of a shoot 13 which is fixed to the vertical rod 1, the top of the shoot having an aperture shaped to pass a package when this is in alignment with it. The stack of packages is rotated by a weight 17 connected by a cord 18 to a pulley.20 on the table boss 5. It is normally locked against rotation by a pawl 21 engaging ratchet teeth 22 and adapted to be tripped by a coin-freed or other mechanism.
Patent GB-572693-A (GB)
Title: Improvements in or connected with rangefinders, heightfinders and like optical measuring instruments
IPC: G01C3/12
Filed: 1939-11-14
Abstract: 572,693. Range-finders. BARR & STROUD, Ltd., and STRANG, J. M. Nov. 14, 1939, No. 30007. [Class 97 (i)] In a short home-base range-finder &c., a tubular member extends within the base casing, and on one or both sides, from, or from close to, the end reflector towards the central reflecting system, and forms a closed column of air, through which the light beam passes, shut off from the rest of the instrument and from the exterior thereof so as to be without temperature gradient. As shown in Fig. 2, a supplementary tube J closed by end windows K may be inserted between each end reflector B and the corresponding objective C carried by the usual inner tube H. The windows K may be omitted, the open ends of each tube J being connected by a flexible connection to the tube H and to the reflector B ; the connection to the reflector may comprise a metal tubular member 1, Fig. 4, connected by a felt sleeve 5 to the tube J<1> and by felt flaps 4 to the reflector The usual inner tube may be extended to form the supplementary tubes. Casings enclosing the end reflectors may be flexibly connected to the supplementary tubes and to a short flange extending round the end window. Fig. 7 shows a tubular casing T cut away to form an opening over which an end reflector built up of mirrors 13 is attached, the casing being connected by flexible sleeves 15, 16 to the supplementary tube S and to the flange round the window F. Specification 2114/15, [Class 97 (i)], is referred to.
Patent GB-174696-A (GB)
Title: Improvements in pattern plate moulding
IPC: B22C9/00
Filed: 1920-10-25
Abstract: 174,696. Roberts, G. E., and Bates, J. E. Oct. 25, 1920. Patterns; flasks; clamping and guiding flasks. -A pattern plate is cast with both halves of the pattern on one side so that mould halves made therefrom are all identical, and assembled pairs produce two articles each. Top and bottom moulds are made from a pattern in the usual way but in boxes 2, Fig. 2, having one cut-away side temporarily closed by a plate 8 so that they may afterwards be placed side by side with the sand in direct contact. A T-section frame 9, Fig. 4, and flat mould half 11 with runner 12 and risers 13 are placed on the boxes 2 and are aligned by holes and pins 5 and the frame 9 by pins through holes in lugs thereon and centre lugs 7 on one of the boxes. To take frames of different size one of the lugs 7 may be replaced by a bush 17, Fig. 6, adjustable along a slot formed by a stepped formation 14 of the cutaway sides. If the parting-face is not flat, the sand in the mould half 11 is cut away to leave the desired thickness for the pattern plate to be cast.