baber/WOPTO huggingface dataset:
Patent GB-976959-A (GB)
Title: Electrical switching arrangement
Inventor: PRICE JOHN CLIFFORD
IPC: H04B14/04
Filed: 1963-07-19
Abstract: 976,959. Pulse-code modulation circuits; transistor switching circuits. STANDARD TELEPHONES & CABLES Ltd. July 19, 1963, No. 28626/63. Headings H3T and H4L. A semi-conductor switch for periodically discharging a storage capacitor C to a constant residual potential comprises transistors T1, T2 which are rendered conducting in succession by pulses supplied from pulse generators PG1A, PG1B so that the discharge of the capacitor commences wholly through one transistor and finishes wholly through the other. The circuit is used to develop the input signal for the analogueto-digital converter described in Specification 976,960 for use in a multiplex pulse-code modulation system. It is stated that the use of a single transistor to discharge the capacitor results in a discharge to a level dependant upon the initial value of charge and hence causing cross-talk in the multiplex system; the use of a second, or even of a second and a third transistor, ensures discharge of the capacitor to a fixed level independent of the initial charge thereon.
Patent GB-173098-A (GB)
Title: Improvements in or relating to electrical oil switches
IPC: H01H33/75
Filed: 1920-10-09
Abstract: 173,098. Gittins, G. E., and Metropolitan-Vickers Electrical Co., Ltd. Oct. 9, 1920. Oil switches; sparking, preventing, and arcrupturing devices.-Oil switches have main contacts 3 bridged by a movable contact 4 carried on a transverse conducting bar 19 attached to the insulated operating-rod 11. The final current break takes place between shunt contacts 5, 6 arranged in insulated cast steel chambers 7. The movable shunt contacts 6 are mounted resiliently in brackets 18 at the ends of the bar 19, and pass through apertures 17 in the arcing chambers 7, these apertures containing insulating-bushes 16 with steel liners 21, thereby forming recesses 22 into which contacts 6 recede when the switch is opened, substantially closing the chambers 7. The chambers 7 are divided at 25 and have projecting lugs by which they are secured by nuts 26 on a pair of parallel insulating-tubes 24 surrounding metal rod 24, the rods and tubes 23, 24 being held in position by brackets 27 secured around the insulating tubes 9 surrounding the fixed main contact bars 8. Small vent holes 28 are provided at the top of the chambers 7 to prevent air locks when filling the oil-tank 1.
Patent GB-647935-A (GB)
Title: Improvements in or relating to crystal contact devices and to methods of manufacturethereof
IPC: H01L29/00
Filed: 1948-11-04
Abstract: 647,935. Non - contact - making relays. GENERAL ELECTRIC CO., Ltd., DOUGLAS, R. W., and JAMES, E. G. Nov. 4, 1948, No. 28689. [Class 40 (iv)] [Also in Group XL (c)] A crystal contact device for use as an amplifier or oscillator comprises a glass envelope through opposite walls of which metal supporting tubes 2, 3 are sealed, supporting members 5, 12 in and fixed to the tubes carrying respectively a crystal and two at least relatively insulated whiskers 8, 9 contacting the crystal at spaced points, and leads 10, 11, 5, one of which may be the crystal supporting member 5, passing into the envelope through the tubes. Preadjustment of contact pressure is thereby facilitated. Alternatively one supporting member and lead for the whiskers may be a metal tube secured within the tube 3, the other lead forming a metal spigot for plugging into a socket. The leads may be moulded into the supporting member 12 or afterwards sealed in holes therein. Specification 646,674, [Group XXXVI], is referred to.
Patent GB-319374-A (GB)
IPC: H03G3/22
Filed: 1929-09-21
Abstract: 319,374. Lorenz Akt.-Ges., C., (Assignees of Zakarias, E., and Polonyi, P.). Sept. 22, 1928, [Convention date]. Thermionic amplifiers.-An automatic amplitude limiting device comprises a movable shortcircuit winding which damps a high frequency or intermediate-frequency circuit, the coupling between winding and circuit being automatically varied in accordance with the received energy. In the system shown, the output circuit of the detector 5 includes a relay or hot-wire device 11 controlling the coupling of a short-circuited coil 16 with respect to the input circuit of the screengrid amplifier so as to increase or decrease the damping with increasing or decreasing signal strength. The short-circuit winding may act on an inductance situated in any of the highfrequency or intermediate-frequency stages of the receiver. Specification 252,764 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) states that the damped inductance may be situated in a detector or low frequency stage; this subject-matter does not appear in the Specification as accepted.
Patent GB-742183-A (GB)
Title: Improvements in or relating to agricultural ploughs
Inventor: WILLIAMS FREDERICK
IPC: A01B63/02
Filed: 1952-11-14
Abstract: 742,183. Agricultural implements. BROWN TRACTORS (ENGINEERING), Ltd., D. Nov. 16, 1953 [Nov. 14, 1952], No. 28709/52. Class 6 (1). A two - furrow plough is convertible into a threefurrow plough by' the addition of a conversion unit comprising a spacer member formed of two tubular members n<SP>1</SP>, n2 connected by stretcher plates n<SP>3</SP> and a beam a<SP>3</SP> carrying a plough body c<SP>3</SP> and coulter d<SP>3</SP>. When the conversion is made, the land-side p is removed from the near-side plough body c<SP>2</SP> and transferred to the plough body c<SP>3</SP>. The two-furrow plough comprises two beams a<SP>1</SP>, a<SP>2</SP> joined by a spacer b. A head-stock e is provided with a cross-shaft f attachable to a tractor three-link hitch, the upper link of the hitch being attached to the head-stock. A manually adjustable depth control wheel i is provided. Conversion units may be employed to build up complements for ploughing four or more furrows.
Patent GB-235470-A (GB)
Title: Improvements in film sprocket drums and accessory apparatus for photographic letterpress composing machines, cinematographs and the like
IPC: G03B1/42
Filed: 1924-05-09
Abstract: 235,470. August, J. R. C., and Hunter, E. K. May 9, 1924. Type composing. - Sprocket-drums for films employed in photographic letterpress-composing machines and the like are provided with sprocketteeth which are radially adjustable to take up stretch in che film ; the stretch of the film may be determined by a gauge, described below. In the drum shown in Fig. 2, the sprocket-teeth 67 are formed on bars 68 which rest on springs 73 and are radially adjustable by means of ring-nuts 71, 76 engaging the bevelled ends of the bars. The springs may be omitted if the maximum adjust. ment is small. The gauge 77, Fig. 3, is provided with a pivoted pointer 83 having a pin 85 for engaging one of the sprocket-holes 79 in the film 80, the film being attached by means of the sprocketholes to pins 87, and pins 82 on a slide 81 pulled outwards by a weight 86. The stretch is indicated by a pointer on a scale 96, and the drum 32 is provided with a similar scale for indicating the setting of the ring-nuts 71, 76.
Patent GB-791120-A (GB)
Title: Improvements in and relating to actuators for fluidized conveying systems
Inventor: ATKINSON FREDERICK MELVILLE
IPC: B65G53/46
Filed: 1954-10-08
Abstract: 791,120. Pneumatic conveyers. ATKINSON BULK TRANSPORT CO. Oct. 8, 1954, No. 29128/54. Class 78 (1). In apparatus of the kind in which pulverulent material contained in a hopper 5 is fed by a rotary bladed wheel 23 into the conveying system, the areas of the cross-sections of the air supply pipe 12 and the conveying conduit 13 are substantially less than the cross-sectional area of the pockets 10 of the wheel and the volume and pressure of the air supply are such that the material will be fluidised in the pockets as they pass between the pipes 12, 13 and will fill completely the conduit 13. Leakage of air is reduced by providing brass tips 40 on the blades 33 of the wheel. The blades are mounted on a drum 23, the ends 25, 26 of which are fast on a shaft 21. A plurality of packing rings 29 is placed between the drum and a tightening ring 30 which is welded to a part of the housing. The outer sloped end of the packing bears against the correspondingly-sloped inner surface 28 of a flanged ring 27, the position of which can be adjusted by screws 31 mounted in the ring 30. The blades may be curved, as shown in Fig. 3. The flow of material towards the outlet 6 of the hopper is facilitated by providing it with a false bottom of webbing through which air is forced from a plenum chamber 7.
Patent GB-391187-A (GB)
Title: An improved support for elbow or other joints adapted for use more particularly in connection with vacuum cleaning systems
IPC: A47L9/00
Filed: 1931-10-20
Abstract: 391,187. Clips. QUEEN H. E. and REPLOGLE, D. B., 2869, 28th Street, Northwest, Washington, U.S.A. Oct. 20, 1931, No. 29148. [Class 44.] Hollow elbow &c. joints, especially for suction cleaners are supported by a clip or bracket D adjustably mounted on a fixed part by a pair of leg members 37 connected together by a yoke portion 39 which receives the joint 40 and grips it yieldingly to permit rotary movement of the joint and the pipes connected together thereby. Spaced ribs 41 on the elbow joint 40 retain it in the yoke 39. The leg members 37 are L-shaped and the limbs 34 thereof are received between arms 36, extending from a baseplate 35, and similar arms on a backplate secured to a fixture, the arms 36 being set back at their ends to provide space for the limbs which are clamped therebetween when threaded means draw together the arms. The yoke portion 39 is at such an inclination to the limbs 37 that the elbow joint may be used in the reversed position in it and the clip may be secured to either a horizontal or a vertical surface. Specification 139,892, [Class 8 (i), Air and gases, Compressing &c.], is referred to.
Patent GB-1074588-A (GB)
Title: Improvements in or relating to liquid containers
Inventor: CHANDLER DENNIS BUTLER
IPC: B65D88/02
Filed: 1963-07-24
Abstract: 1,074,588. Suspended storage tanks. BRAITHWAITE & CO. ENGINEERS Ltd. July 8, 1964 [July 24, 1963], No. 29261/63. Heading E1T. A container for the bulk storage of liquid which may, if desired, be under pressure, comprises a fabric bag 22 which is supported by a series of spaced cables 22 anchored to a central column 10 and to a ring support, see Figs. 1B and 5A (not shown). The cables may be suspended from an enveloping concrete structure, a tripod construction or other framework for details of which the Specification and Figs. 6 and 7 (not shown) should be referred to. The cables may be made of galvanized steel coated with polyvinyl chloride, neoprene or nylon. Whilst the fabric may be made of neoprene-coated nylon.
Patent GB-817494-A (GB)
Title: Improvements relating to feeler gauge instruments
IPC: G01B7/00
Filed: 1956-09-26
Abstract: 817,494. Gauging departure from standard form. DECKEL, H., and DECKEL, F. W. Sept. 26, 1956 [Oct. 21, 1955; Nov. 30, 1955], No. 29387/56. Addition to 764.740, [Group XIX]. Class 40 (1). [Also in Group XIX] The feeler gauge of the parent Specification (see Group XIX) which is attached to and rotates with the spindle of a machine tool, and which will also slide transversely to the axis of rotation, is modified whereby a fine indication is transmitted electrically to an indicator which does not share in the rotation, the coarse indication being transmitted mechanically as before. The instrument of Fig. 1b fits into the spindle of a machine tool and carries a sensing element 70 which rocks an arm 34, causing the permanent magnet 201 to move relatively to the coil 203; the signal thus generated is taken off via slip rings 204 and passed to a remote indicator. The lead to the indicator passes through the hollow flexible non-rotating tube 118, the return connection being through the frame of the machine, although a second slip ring may be used. Coarse indication of the position of the element 70 is shown on a dial gauge which is actuated by the pin 92 and rocker arm 88, this in turn being driven by the sleeve 96 and pins 100. In a modification (Fig. 2, not shown) the electromagnetic pick-up is located to one side of the axis of rotation, and is an E-type transformer 212 of which the moving member is directly connected to the element 70; in another (Fig. 3, not shown) the pick-up is a differential capacitor; it may also be a movable diaphragm controlling the illumination of a photo-electric cell.
Patent GB-1128937-A (GB)
Title: Electronic schedule generator tracking circuit and rate limiter
Inventor: BEST STANLEY GORDON
IPC: B64D13/04
Filed: 1967-06-26
Abstract: 1,128,937. Electric correspondence control systems. UNITED AIRCRAFT CORP. June 26, 1967 [July 11, 1966], No. 29419/67. Heading G1N. The pressure Pc inside an aircraft cabin is automatically regulated by a valve 12 to follow a control signal Pd based inter alia on the external pressure Pa, the magnitude and rate of change of the error signal e being limited to avoid rapid changes in pressure inside the cabin. The control signal is fed through a clamp circuit 33, which limits its maximum and minimum valves, to an integrator 36 whose output is fed back to oppose the control signal in network 35, thereby limiting the rate of change of integrator output. The modified Pd signal is compared at 38 with the cabin pressure Pc and the difference # is amplified at 42 and fed to an actuator 44 controlling the air valve 12. The error signal # is also fed back to modify the control signal through a tracking circuit 50 which has a deadband and only passes signals exceeding a predetermined magnitude, hence limiting the maximum valve of the error signal e.
Patent GB-603930-A (GB)
Title: Apparatus for collecting perforated stampings as they come from the stamping machine and for threading them on strings
IPC: B21D22/00
Filed: 1945-11-06
Abstract: 603,930. Bundling sequins &c. DISTLER, L., and ARCHIBALD & CO., Ltd., J. Nov. 6, 1945, No. 29501. [Class 94(i)] Apparatus for collecting perforated stampings, particularly sequins, from the stamping press, consists of a number of needles supported by forward and rearward grippers which are opened alternately, the sequins being delivered on to the needles by the ejecting action of the press when the forward grippers are opened and swept off the needles by a comb on to threads attached to the needles, when the rearward grippers are opened. As shown in Fig. 1, which is a plan, and Fig. 2, which is a section on the line 2-2 of Fig. 1, upper and lower horizontal bars 3, 4 respectively, are mounted on vertical posts 2. These bars carry the jaws 5, 6 of the forward grippers for the needles 9, the bars being urged together by tension springs 7 to close the jaws which are slidably mounted on the bars and themselves controlled by springs housed within recesses in the bars. The rearward grippers are formed similarly and have jaws 5a, 6a aligned with the jaws 5, 6. The comb 11, with teeth 14 for each needle 9, is situated parallel to the bars and attached at its:ends to carriages 12 slidable along rods 13. The comb is moved downwards, to engage the needles, against the action of springs 17, by means of cams 16 provided on a shaft 15 controlled by crank handles 18. Pairs of toggle links 19, 20 are joined to the ends of the bars 3, 4, and similar links 19a, 20a to the bars 3a, 4a, each pair of links 19a, 20a being joined by a link 21 to the links 19, 20 on the same side of the machine. The movement of the link 21 straightens one pair of toggle links, opening the corresponding gripper jaws, and breaks the other pair of toggles, causing the other jaws to close. The movement of the jaws is limited by stops 23, 23a and their closed position is controlled by collars 22. The forward end of the link 21 is coupled to an actuating arm fixed to a rock shaft 27 to which is fixed a forked arm 29 adapted to be engaged by a crank pin at the end of the operating shaft 15. when the carriages 12 are at the forward end of their sliding movement. When the rock shafts 27 are moved to close the forward grippers, the carriages 12 can be slid rearwardly so as to move the crank pins out of engagement with the forked arms without disturbing the rock shafts 27. The sequins are fed from the stamping press through guide tubes 33 in a perforated block 31 along the needles 9 to the space between the forward and rearward grippers where they are supported by guides 34, which may be in the form of semicylindrical troughs. When the needles are full, the forward grippers are closed and the rear ones opened, the comb 11 being depressed by means of the cam 16. The carriages 12 are slid rearwardly so that the comb sweeps the sequins on to the threads.
Patent GB-187472-A (GB)
Title: Improvements in or relating to setting blocks for boilers and like apparatus
IPC: F23M5/02
Filed: 1921-11-05
Abstract: 187,472. Hurd, C. F. M., and Hurd's Patents Co., Ltd., M. Nov. 5, 1921. Settings.-In a flue cover of the type having at one end a bearing surface g to rest against the boiler a, and a main body d, curved downwardly and outwardly to form a trough which may be filled with packing material e and resting at the outer end on a support c, the surface g is situated well above the water line in the boiler and a recess k is formed in the block below the bearing surface and filled with insulating material, such as slag wool or dust and ashes, so that the flames cannot reach the external surface of the boiler above the water line. The insulating material e is held in place by concrete or asphalt slabs f. Provision may be made for inserting a pyrometer m into any part of the setting.
Patent GB-683699-A (GB)
Title: Endless conveyors
Inventor: SMITH JAMES VINCENT
IPC: B65G47/48
Filed: 1949-11-21
Abstract: 683,699. Endless overhead conveyers. NEW CONVEYOR CO., Ltd. Nov. 15, 1950. [Nov. 21, 1949] No. 29699/49. Class 78 (i). In a conveyer comprising a carrier b movable by an endless chain or the like d along an overhead track a and provided with a tilting tray c which is tilted at a predetermined position along the track, the tilting means on the carrier is controlled by a tappet on an endless chain mounted within a housing e on the carrier and moved-step-by-step by plunger n operated e.g. by racks u disposed at intervals along the track. The tappet-carrying chain h is mounted in zigzag fashion on sprockets g one of which has a ratchet wheel and a hand-wheel (not shown) secured to it such that by rotation of the handwheel the tappet 17 can be set back a desired distance from contact with a pivoted plate 18. The chain is moved step-by-step as the carrier moves along the track by the rack-operated plunger through a pair of cranks m, q on a shaft k, crank q carrying a pawl r engaging the ratchet wheel j. The plunder and pawl are returned by a spring p acting on a further crank on shalt k. A further crank v on shaft k has a roller w for engagernent with a notch x in a lever y pivoted to a lever z pivoted on a shaft 4 and coupled by a bowden cable 5 to the tilting mechanism for the tray c. A spring 3 acts on an arm 9 carrying a roller 11 which urges lever y out of the path of roller w into engagement with a roller 15 resiliently supported by a crank 6 connected by a link S to the arm 9. Crank 6 is mounted on the shaft 7 of the plate 18 whereby spring 3 causes plate 18 to be held against a stop closely adjacent the chain h passing around the sprocket g on shaft i. After the carrier has passed a predetermined number of ramps u tappet 17 moves plate 18 outwards so that roller 15 presses resiliently on lever y and moves the latter into position to be engaged by roller w as shown, so that the following ramp u causes lever y to be raised so as to operate, through lever z and cable 5, the tray tilting mechanism. The device may be put out of action by a cam 22 which is movable by hand into the path of a roller 25 carried by an arm 24 mounted on crank 6.
Patent GB-355087-A (GB)
Title: Improvements relating to electric communication cables
IPC: H01B7/36
Filed: 1930-10-04
Abstract: 355,087. Cables. HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T., 11, Holborn Viaduct, London, and WHITEHOUSE, W. P., of Henley's Telegraph Co., Gravesend, Kent. Oct. 4, 1930, No. 29725. [Class 36.] Identification marks for the conductors of a quad of the type in which each conductor receives the same amount of ink of the same colour in a given length are so designed as not to come near the edge of the conductor and to avoid fine lines such as occur in letters. This is effected by marking each conductor with compact marks such as round spots and identifying the conductors by the spacing of the marks. In the arrangement shown in the Figure the conductors are marked with evenly spaced dots and with dots in groups of two, three, or four respectively, the groups being appropriately spaced. The dots may be in contact in which case they mav be rectangular so as to form longer or shorter marks.
Patent GB-761051-A (GB)
Title: Improvements in or relating to polymeric substances
Inventor: CHARLESBY ARTHUR
IPC: C08J3/28
Filed: 1952-11-25
Abstract: Vinyl chloride-vinylidene chloride copolymers, polythylene oxide wax or cellulose nitrate are subjected to ionizing radiation in amount sufficient to bring about an increase in resistance to the solvent action of organic solvents but insufficient to cause any substantial change in mechanical properties as measured at ordinary temperatures. The ionizing radiation may be high energy neutrons, gamma rays, X-rays, high energy protons, electrons or helium ions or thermal neutrons.ALSO:Vinyl chloride-vinylidene copolymers, polyethylene oxide wax or cellulose nitrate are subjected to ionizing radiation in amount sufficient to bring about an increase in the resistance of the substance to the solvent action of organic solvents but insufficient to cause any substantial change in the mechanical properties of the substance as measured at ordinary temperatures.  The ionizing radiation may be high energy neutrons, gamma rays, X-rays, high energy protons, electrons or helium ions or thermal neutrons.
Patent GB-801488-A (GB)
Title: Improvements in or relating to phthalocyanine and like colouring materials
IPC: C09B47/04
Filed: 1955-10-18
Abstract: Phthalocyanines are made by heating pyromellitic acid or mixtures of carboxylic acids containing it (especially mixtures formed by oxidation of fuels) for about 3-8 hours) with urea or its thermal decomposition products in presence of a metal or a metal salt and, if required, a catalyst such as a phosphovanadate, phosphomolybdate, or boric acid.  The acids may be replaced by their esters, anhydrides, ammonium salts, halides, imides, amides, or nitriles, and the conversion may be carried out by heating in a high-boiling inert solvent or under pressure in a low-boiling inert solvent.  The products may be mixed with barium sulphate, titanium dioxide, or oxides of iron, aluminium or chromium or lead or zinc salt, e.g. chromates, to form pigments.  In examples: (1) pyromellitic acid is heated with urea, nickel nitrate and ammonium molybdate; (2) a crude mixture of carboxylic acids, containing ash and picric acid, produced by nitric acid oxidation of hard coal, is heated with trichlorbenzene, copper chloride, urea and ammonium molybdate; (3) a mixture of acids, obtained by heating a crude coal oxidation product under pressure with water, is heated with urea, magnesium sulphate, and boric acid.