baber/WOPTO huggingface dataset:
Patent GB-911892-A (GB)
Title: Improvements in or relating to display circuits including cold cathode tubes
Inventor: KLEPP GEORGE FRANCIS
IPC: H01J17/49
Filed: 1958-03-20
Abstract: 911,892. Cold cathode discharge tubes; electrode materials. STANDARD TELEPHONES & CABLES Ltd. March 13, 1959 [March 20, 1958], No. 8906/58. Class 39 (1). In a sequential display tube having a gas filling, a common anode 3, Fig. 2, is positioned adjacent to a co-ordinate array of electrodes 1, 2, 9, so that when junctions of the array are sequentially primed, signal pulses applied to the anode gives rise to glow discharges which produce a visual display. The array comprises cathodes 1, Fig. 3, which consist of a series of annuli 8 joined together in linear arrangement, and a number of auxiliary or trigger electrodes 2, 9 set at right-angles to the annuli, these comprising a strip of wire 2 wound with loops 9 which project towards the anode 3 through the apertures of the annuli 8. In another form the anodes 11 and trigger electrodes 12, Fig. 5, comprise thin wires arranged on support rods 13, 14 with the common electrode being the cathode 10 comprising a nickel plate upon which, by means of a mask, an aluminium suspension is sprayed to produce a spotted pattern. The aluminium spots are coated with an activating material such as a mixture of BaCO 3  and SrCO 3  which is subsequently treated to reduce the maintaining voltage of the tube. The cathode may take other forms e.g. a metal sheet upon which is positioned an apertured piece of mica, and the metallic surfaces uncovered by the mica may be made to protrude there as concave surfaces. In another form the cathode may comprise a piece of ceramic with metallized spots, with a common connection provided through the ceramic material on the side remote from the spots. Yet another form may be a mica sheet with rivets or eyelets providing a basis for the metallized cathode areas. The electrode array can comprise electrodes other than those in lines perpendicular to another. The common electrode could be the trigger electrodes with the anodes and cathodes forming the array. A further modification comprises a common anode, a common cathode and two sets of trigger electrodes forming the co-ordinate array.
Patent GB-577455-A (GB)
Title: Improvements in and relating to amplifiers for electric wave signals
IPC: H01Q1/00
Filed: 1939-04-19
Abstract: 577,455. Wireless receiving systems. ROBINSON, J. April 19, 1939, Nos. 8923/40 and 8924/40. Divided out of 577,453. [Class 40 (v)] Incoming signals are mixed with local frequency-changing oscillations, which are derived from the signals and vary in amplitude with them, so that the output from the frequency-changer is proportional in amplitude to the product of the applied signals and the local oscillations. The amplifier output of harmonic frequency may be made proportional -to the square, cube, or higher power of the input, or to a fractional power of it. The harmonic of the signal may be obtained by passing the latter through a distorting device such as a leaky-grid detector. As shown, the signals are applied to an amplifier 11 having two outputs in parallel. One passes through an amplifier 12 to the frequency-changer 16, whilst the other passes first through a filter 13, and a harmonic-producer 14, and an amplifier 15 tuned to the desired harmonic. The output from the converter 16 may be converted back to the original frequency in a second converter 17, which is also coupled to the amplifier 15. Alternatively, both parallel paths may include harmonic-producers. The rectified resultant current may be used for automatic volume control. The output from 17 may be fed back to the amplifier 11 at any desired phase angle to give either positive or negative reaction. As applied to. a direction finder, an output corresponding to a high power of the input may be used to give an increased directional sensitivity, especially for " maximum " readings. By using negative feed-back, the minimum critical point would sharpen.
Patent GB-181511-A (GB)
Title: Improvements in or connected with stop mechanism for printing presses
IPC: B65H7/06
Filed: 1921-03-23
Abstract: 181,511. Marks, E. C. R., (Miehle Printing Press & Manufacturing Co.). March 23, 1921. No Patent granted (Sealing fee not paid). Tripping, throw-out, and l i k e arrangements.-A printing-press is constructed with feeler mechanism which automatically trips the press in case the sheet is out of front or side register, an annunciator being operated to indicate at which particular register the feed is defective, and an auxiliary delivery device being brought into operation for dealing with the sheets not correctly fed and in consequence not printed on. As applied to an offset press, the sheets are fed to front stops 16 carried from a shaft 11 by arms 13 adjustably connected by screws 15 to arms 12 adjustably mounted on the shaft 11. The edges of the sheets are gripped by a gripper 17 actuated by a fixed cam, lever 20, and spring rod 19 to a shoe 23 on an arm 24 which is advanced relatively to the arm 13 to cause the sheet to be registered against the stops 16. A feeler 37 on a pivoted contact 35 is acted on by the sheet, and if the feed is normal, the contact 35 is thus moved to break an electric circuit in which is arranged an electromagnet 38, Fig. 6, and also an annunciator. Four of such circuits, to the two front and two side gauges are arranged in parallel with four annunciators, and the electromagnet 38 is in series with each contact 35. The electrical circuits are made for a portion of the rotation of shaft 11, and the sheets are registered during this period, so that if the feeler 37 fails to be moved by the sheet, or if either of the similar feelers in connection with the side registers fails to be actuated by the motion of the sheet against the register, the magnet 38 is energized and the required annunciator operated. The energization of the magnet 38 projects a solenoid 80, Fig. 6, and causes this to be acted on by a projection 79 on the shaft of the impression cylinder 52. A lever 57 on which the magnet 38 is mounted is thus operated, and this acts to trip the offset cylinder 53, and to bring into action an auxiliary delivery cylinder 56. The lever 57 acts via a link 60 and a lever 62 to release a latch 64 and allow a spring 81 to move a lever 65 in a clockwise direction and depress a link 66 connected to a lever 68 bearing a treadle 67. The lever 68 acts via a link 68, lever 70, link 71, lever 72, and latch 74 to release a rod 75 which actuates a lever 76 on eccentric bearings 77 of the cylinder 56. The lever 68 also operates via a link 99 to allow a catch 89 to be depressed into contact with a lever 86 connected by an arm 84 and a link 83 to the eccentric bearings 82 of the offset cylinder 53. The catch 89 is on an arm 87 which is normally oscillated idly from a cam 90 on the offset cylinder, and when the catch is operated as described, the motion of lever 87 is transmitted to the bearings 82 and the cylinder 53 is moved out of printing position.
Patent GB-273412-A (GB)
Title: Improvements in and relating to duplex telegraphy
IPC: H04L5/14
Filed: 1926-04-06
Abstract: 273,412. Jacob, W. G. R., and Eastern Telegraph Co., Ltd. April 6, 1926. Duplex telegraphs.-In a duplex system of the bridge type in which the receiving instrument is connected to the bridge by way of a transformer g, certain points are earthed in order to prevent the receiver from being affected by electrostatic charging of the transformer coils when the transmitter is operated. Thus, if a receiving instrument c be connected through the valve e and transformers f, g into the duplex bridge shown in Fig. 1, one or more secondary windings such as that of the transformer g are earthed through a connection x. The cores of the transformers may also be earthed, and one or more transformer windings may be surrounded by earthed screens. Filter circuits. Where the received signal voltages are converted into A.C. voltages before amplification, as described in Specification 173,793, one or more tuned circuits h, k serve to eliminate disturbing currents while passing currents of the A.C. frequency to which the signals are converted. Moving coil receivers. The moving coil of a receiving instrument c is provided with an earthed electrostatic shield, which may comprise a strip of metal foil bound spirally over the winding and earthed through a flexible connection. This arrangement prevents deflections which might arise from a change of potential difference between the surface of the coil and the poles of the magnet when these are not strictly symmetrical. Specification 203,045 is referred to in the Provisional Specification.
Patent GB-867354-A (GB)
Title: Collapsible ladder
IPC: E06C1/52
Filed: 1958-03-21
Abstract: 867,354. Ladders. SCRUBY, C. C. March 21, 1958, No. 9061/58. Class 20(2) The side members of a collapsible ladder comprise blocks 16 secured to a flexible metallic strap 18 and held rigid by a cable 20 fixed to one end of the ladder and strained by a toggle lever 50 which can be released to allow the ladder to be wound into a roll. The blocks 16 engage each other by complementary V-shaped faces.
Patent GB-851155-A (GB)
Title: Improvements in or relating to dynamo electric machines
IPC: H02K9/00
Filed: 1958-03-21
Abstract: 851,155. Cooling dynamo-electric machines. WESTINGHOUSE ELECTRIC CORPORATION. March 21, 1958 [March 28, 1957], No. 9109/58. Class 35. A dynamo-electric machine e.g. a turbine driven generator embodies two separate gastight cooling systems employing the same kind of gas, e.g. hydrogen, the gas of one system filling the machine housing 8 and being circulated by a rotor mounted fan 58 through a cooler 60, a perforated inner tubular wall 62, and stator end winding spaces 50 and stator core radial ventilating spaces 15 to the air gap 7, and the gas of the other system, at a substantially higher pressure than that of the first system, being circulated by a blower 52 through a cooler 53 and cooling-ducts 20 in lightly insulated stacks of conductors 19 forming the stator A.C. winding 16. In the embodiment shown the rotor winding conductors 30 also are cooled by the latter system, the gas flowing from cooler 53 through one or more peripheral tubes 47 to an end space 46B where it divides to flow through flexible electrically insulating tubes 49 and headers 48 to the stator winding ducts 20 and through passages 42 to ducts 27 in the strip conductors 30 of the rotor D.C. winding 25. Components 38, 40, 44 hermetically seal one system from the other though some leakage is tolerated, and pressure in the low pressure system may be maintained manually or automatically by control of a hydrogen supply H2, while a pump P pumps gas from the low to the high pressure system a pressure-regulator 64 possibly being provided to maintain automatically a predetermined pressure-difference between the two systems. Gas-tightness in the rotor winding ducts 27 may be effected by heat-resistant rubber seals 34 disposed laterally of, and further seals not shown near the ends of, damper-windings 32. Specification 722,151 is referred to. Reference has been directed by the Comptroller to Specification 682,340.
Patent GB-273807-A (GB)
Title: Improvements in brake mechanism for vehicle steering-wheels
IPC: B60T11/04
Filed: 1926-04-07
Abstract: 273,807. Clark, D'A. M., (Sanford, R. S.). April 7, 1926. Force - transmitting mechanism; universal joints.-In brake-mechanism for vehicle steering- whesis of the kind comprising a non-swivelling operating-shaft 34 connected by a universal joint to the chassis 24 and by a second universal joint to the actuating means for the brake shoes 12, a helical spring 44 adapted to transmit torque from the shalt 34 while at the same time permitting the wheel 14 to swivel is sleeved on the adjacent ends of the shaft 34 and spindle 26 of the actuating cam 10. The spindle 26 is journaled in a bushing 28 in a bracket 30, one end of which forms part of the universal housing 32, while the end of the spindle is made concave to receive the convex end of the shaft 34, thus forming a ball- and-socket joint substantially in line with the king-pin 20. The spring 44 is preferably tensioned so as to urge the parts 26, 34 towards each other, and is also arranged to be wound tighter on application of the brake shoes. At its inner end the shaft 34 is slidably received in a sleeve 36 universally supported in hemi-spherical members 38, 40 forming the connection to the chassis 24.
Patent GB-548105-A (GB)
Title: Improved electro-magnetic measuring apparatus
IPC: G01D5/22
Filed: 1941-07-22
Abstract: 548,105. Magnetic and inductance tests. TAIT, W. H. July 22, 1941, No. 9254. [Class 37] Apparatus for the measurement of pressures or small movements such as those occurring in structures under load comprises two U-shaped cores a, b, Fig. 1, arranged with their open ends facing one another, the cores carrying respectively a primary coil c and a secondary coil e and one core being fixed while the other receives the movement to be measured. The primary coil c is fed from a mains transformer d, if necessary through means for maintaining the voltage constant. The secondary winding e is connected through a rectifier f to a galvanometer g. Relative movement between the cores a, b varies the magnetic linkage and so modifies the E.M.F. induced in the secondary coil. An opposing E.M.F. may be included in the secondary circuit in order to control the range and utilise the whole scale of the galvanometer. This may be a steady E.M.F. produced by a second measuring unit identical with that shown in Fig. 1 reversely connected, or the backing-off E.M.F. may be provided by an indentical unit to the forward acting unit with the two moving cores so arranged that as one increases the linkage in its magnetic circuit the other decreases its linkage. In a modification, Fig. 4, a stationary backing-off unit comprises a U-shaped core a<1> facing a similar core b<1>. The core a<1> carries a primary winding c<1>, while the core bl carries a secondary winding l<4> connected with the main secondary winding e through rectifiers f<1>, f<2> in opposition to the measuring instrument g. On the other limb of the core b<1> is a secondary winding e5 connected in opposition to the winding e, and across the windings e<4>, e<5> are connected variable resistances r<1>, r<2> adjusted to give optimum proportions of alternating and direct current. In another arrangement, Fig. 5, there are two fixed cores b<2>, b<3> and two moving cores a2, a<3> fastened to a rod h mounted on two diaphragms i so that its movement is maintained parallel. The cores a<2>, a<3> have a common primary a5. The fixed core b<2> has a secondary winding e2, while the fixed core b<3> of the backing-off unit has secondary windings l<4>, l<5> shunted by variable resistances r<1>, r2. Specification 502,500 is referred to.
Patent GB-1246245-A (GB)
Title: Cables
Inventor: LOVELOCK LEONARD ROBERT
IPC: H01B7/282
Filed: 1970-02-26
Abstract: 1,246,245. Waterproof cables. STANDARD TELEPHONES & CABLES Ltd. 26 Feb., 1970, No. 9272/70. Addition to 1,165,528. Heading H1A. To waterproof individual cores 1 of a multicore cable and to prevent axial flow of water when an outer waterproof sheath is damaged, a laminate 2 comprising plastics 3 and paper 4 innermost is longitudinally wrapped round each core and the intercies between the strands and the outer sheath filled with an insulating, water-impervious, non-hardening jelly-like substance, e.g. petroleum jelly. The plastics layer 3 is one which is impervious to this jelly e.g. polypropylene, and is bent over at 5 and sealed using heat or adhesive to form a plastics-toplastics seal to prevent the jelly from passing into the paper layer. In another embodiment (Fig. 2, not shown) the laminate is twice as wide and is folded in half (at 15) to give a double thickness insulating layer (12).
Patent GB-1472372-A (GB)
Title: Device for establishing a coupling between an electric driving motor and an element which is driven in rotation
IPC: F16F15/10
Filed: 1975-03-06
Abstract: 1472372 Shafts; friction dampers COMMISSARIAT A L'ENERGIE ATOMIQUE 6 March 1975 [11 March 1974] 9398/75 Headings F2U and F2S A shaft 4 provides a coupling between a rotary drive motor and a driven element 1 freely suspended from the lower end of the shaft which is unsupported along its length, and, for any given weight of the driven element and its frequency of rotation, the shaft length is at least 50 times greater than the shaft diameter. In order to damp the slight oscillations of the shaft when passing through the critical speeds one or two damping devices 11, 18 may be provided, the first being formed of a buffer unit 12 and plates 13, 14 pressed towards a plate 16 by a spring 15. As shown in Fig. 4 the second damping device 18 may consist of three friction plates (e.g. of graphite) pressed by springs 24, 25 and 26 against surfaces 27, 28 and 29. Alternatively, Fig. 5 (not shown) the damping device (18) may consist of three friction plates (21, 22 and 23) stacked together and pressed by a spring (32).
Patent GB-1247224-A (GB)
Title: The extraction of pyrethrum
Inventor: LLOYD ANTHONY MICHAEL
IPC: A01N65/12
Filed: 1969-02-21
Abstract: 1,247,224. Pyrethrins. ROSE, DOWNS & THOMPSON Ltd. 20 May, 1970 [21 Feb., 1969], No. 9417/69. Heading C2C. Pyrethrins are extracted by treating pyrethrum flowers with a hydrocarbon solvent, subsequently subjecting the miscella to a liquid/liquid partition with a water-miscible organic solvent in the presence of water, and recovering the pyrethrins from the resulting partitioned hydrocarbon miscella.
Patent GB-1419038-A (GB)
Title: Pneumatic tyres
IPC: B60C9/28
Filed: 1974-03-01
Abstract: 1419038 Pneumatic tyres MICHELIN & CIE (Compagnie Generale de Etabs Miohelin) 1 March 1974 [2 March 1973] 9449/74 Heading B7C A pneumatic tyre comprising at least two breaker plies 21, 22 is provided with two auxiliary carcass reinforcing plies 11, one on each side of the midcircumferential plane, and at least one main carcass reinforcing ply 10, the cords of which are substantially radial excepting in the regions of the plies 11. Preferably the auxiliary plies 11 are located in the shoulders of the tyre. Preferably, b # S/4, and a # S/4, the widths of the auxiliary plies are between <SP>1</SP>/ 5  and <SP>3</SP>/ 5  of the arithmetic mean of the widths of the breaker plies, the cord angle α is between 6 and 60 degrees, and the cord angle # is 10-60 degrees. In the two assemblies illustrated in Figs. 3 and 4, α = 22 degrees, # = 30 degrees, V = 21 degrees, and in a tyre of size 175-14, a = 105 mm., 2S = 365 mm., b = 80 mm., and the plies 21, 22 have widths of 126 mm., 114 mm. respectively. The auxiliary plies 11 preferably include polyamide cords, while the main ply 10 includes rayon cords and the cords of plies 21, 22 are of metal.
Patent GB-1019694-A (GB)
Title: Improvements in or relating to lamp shade carriers
IPC: F21V17/00
Filed: 1964-03-06
Abstract: 1,019,694. Lampshade carriers. K. COLLINS. July 31, 1964 [March 6, 1964], No. 9465/64. Heading F4R. An open frame formed at the lower end with a ring 1 for attachment to the bulb socket and shaped immediately below an upper ring 3 to form a seating 2a for a ring in the lampshade, has a series of lateral projections 5 on the ring 3 to prevent accidental dislodging of the shade. The seating 2a may have a slight inward and downward inclination so that the ring on the lampshade centres itself automatically.
Patent GB-352010-A (GB)
Title: Improvements in or relating to electrical insulators
IPC: H01B17/12
Filed: 1930-03-25
Abstract: 352,010. Bases for masts. HAWLEY, K. A., South Charles Street, Baltimore, U.S.A. March 25, 1930, No. 9501. Convention date, March 25, 1929. [Class 20 (i).] The leg 1 of a structural steel tower, such as a transmission - line tower or an aerial mast, is supported and insulated from earth by a hollow double frustoconical insulator 7 provided with end caps 15, 16 and a central ring 8 having supporting flanges 10 adapted to be bolted to channel bars 5 embedded in a cement or masonry foundation 4. The leg 1 is attached to the cap 15 of the insulator by an angular bracket, Fig. 3, formed with a bottom flange 22 adapted to be clamped between the cap 15 and a nut 19 screwed upon a stud 18 which passes through the insulator and retains the end caps in position. The leg 1 and its transverse members 2 are secured to the upstanding lugs of the bracket 21 by rivets 3.
Patent GB-618248-A (GB)
Title: Cast refractory products
IPC: C04B35/107
Filed: 1946-03-27
Abstract: A cast refractory particularly for use in contact with magnesium and its alloys is principally composed of b -alumina and spinel, and in which alkali metal oxide is present in amount at least equal to four times the amount of silica in order to facilitate the formation of the b -alumina.  The refractory may contain 25-50 per cent of b -alumina, corundum, and a solid solution of alumina in magnesium spinel, the amount of magnesia being 5.5-22.5 per cent; there may also be present 1-4.2 per cent Na2O or 1.5-6.2 per cent K2O so that the percentage of alumina is not less than the sum of 2.5 times the percentage of MgO and 18 times the percentage of Na2O or 11.9 times the percentage of K2O.
Patent GB-493295-A (GB)
Title: Improved means for use in the casting of concrete beams in situ
IPC: E04G13/04
Filed: 1937-04-05
Abstract: 493,295. Casting floor beams in situ. COPEMAN, H. C. April 5, 1937, No. 9607. [Class 20 (ii)] Beams for concrete floors are cast in situ between shutters supported by adjustable channel-shaped members, so dimensioned that some of the members may be housed within the others when collapsed. The main member is disposed horizontally and comprises separated channelbeams 1, arranged back to back, with distancepieces 2 and end connectors 4. Channelsection uprights 5 are pinned to the horizontal member and are supported at their outer ends by inclined channel-section bars 6, hinged at 7 to the uprights and pinned at their lower ends to the horizontal member. The positions of the pinning apertures in the bars 6 are arranged by vertical projection from the apertures in the horizontal member, and the positions of the aperture in the uprights, by horizontal projection from the apertures in the inclined members. Fig. 4 shows the arrangement when the uprights and inclined bars are housed within the horizontal member.
Patent GB-385936-A (GB)
Title: Improvements relating to furnaces, especially to those for the distillation of solidcombustible
IPC: C10B7/00
Filed: 1931-03-30
Abstract: 385,936. Furnaces ; gas-producers. ENERGY RESEARCH CO., 21, Dover Green, Dover, Delaware, U.S.A. March 30, 1931, No. 9622. 'Convention date, March 31, 1930. Void [Published under Sect. 91 of the Acts]. [Classes 51 (ii) and 55 (i).] A furnace or a gas-producer a is provided with a rectangular trough d oscillatably mounted on pivots g. On each of the two longer sides of the trough is arranged a series of shelves d<1>, d2 which overlap at the middle of the trough. The charge is fed from a hopper q into the upper end of the trough in one of its extreme positions, and as the trough is oscillated, the charge descends from one shelf to the next below until finally it is expelled from the open bottom of the trough. The outlet from the hopper and the inlet at the top of the trough are controlled in accordance with the oscillation of the trough by means of partly cylindrical obturating members n<1>, n<2> adapted to be rotated by spur wheels r<1>, r<2> engaging respectively with a rack s<1> secured to a stationary part of the structure and a rack s<2> secured to the trough. In the case of a gas producer, distillation takes place in the trough and the residue falls on to the hearth b where it burns. Surrounding the hearth is a boiler from which steam may be injected up through the bed of fuel for the production of water gas. Means for the supply of hydrogen may also be provided. Gas is withdrawn from the interior of the trough by means of a pipe passing through one of the pivots.