baber/WOPTO huggingface dataset:
Patent GB-767078-A (GB)
Title: Travelling wave tube
IPC: C08G81/02
Filed: 1955-03-25
Abstract: 767,078. Travelling wave tubes. STANDARD TELEPHONES & CABLES, Ltd. March 25, 1955 [April 3, 1954], No. 8858/55. Class 39(1). [Also in Group XL(b)] A travelling wave tube has within the evacuated envelope thereof one or more helices carried by low loss dielectric rods within a dielectric tube, there being rigid mechanical connections between the dielectric tube and the gun and between the dielectric rods and the dielectric tube. The helix 18, Fig. 1, is carried by low loss insulating rods 17 inside a dielectric tube 15, the rods 17 being secured to inner waveguide choke sleeves 4, 11 and the dielectric tube 15 to similar choke sleeves 9, 10, the helix 18 is coupled to waveguide feeders 6, 12 by L- shaped probes 20 and kidney shaped hollow impedance matching members 13 securing the two pairs of inner choke sleeve members 4, 9; 10, 11 together ; choke sleeve 4 is mounted on gun 1 so that the gun and helix form a unitary assembly and choke sleeve 11 is mounted on collector 22 and the loss coating 16 on dielectric tube 15 is given such a diameter as to effect suppression of feedback. In a modification there may be two helices mounted end to end and having different retarded wave velocities. The diameter of loss coating 16 is chosen so that 4 x 10<-3> #u # d/# # 0À3. where U =beam voltage for optimum amplification at wavelength y. d =diameter of tube 15. y =wavelength at centre of band. i.e. 16 must not be so close to the helix as to affect the mode of propagation but its diameter is too small to permit wave propagation between it and the helix. Inner choke sleeve 11 is located by ridge 24 of glass envelope 2 and is spaced from collector 22 by insulating washer 21 ; the collector closes one end of the envelope and carries cooling fins 23. The gun is spaced from the envelope by washer 3. The tubes 13 are made hollow so that D.C. leads can pass through them ; thus for example in a tube with two helices mounted end to end and at different D.C. potentials, the lead to the helix more remote from the gun can be taken through tube 13 at the gun end of the tube. In further modifications, (a) the tube 13 can be replaced by a number of rods, (b) the envelope at the gun end can have an enlarged diameter e.g. for operation at millimetre wavelengths.
Patent GB-720409-A (GB)
Title: Improvements in or relating to jointing means for securing panels to framework
IPC: B62D33/04
Filed: 1952-04-07
Abstract: 720,409. Vehicle bodies. WEYMANN'S, Ltd., and MADDOCK, F. April 7, 1953 [April 7, 1952], No. 8868/52. Class 108 (1). Framing to which body panels may be fixed comprises the combination of a Tee or anglesection bar 10 having a panel-supporting flange 11 and a sheet metal strip 13 provided with tongues 15 spaced apart along the length and width of the strip, which sheet may be fixed by its tongues to the web 12 or a flange of the bar to form a second flange supporting a panel 18.
Patent GB-1291257-A (GB)
Title: Lubrication system for change-speed epicyclic gearing
Inventor: ABBOTT RANDLE LESLIE
IPC: F16H57/04
Filed: 1969-02-19
Abstract: 1291257 Variable speed gearing GKN TRANSMISSIONS Ltd 28 Jan 1970 [19 Feb 1969] 8880/69 Heading F2D A change-speed epicyclic gearing includes an input shaft 13 (e.g. connected to a carrier 17 for helically toothed planet gears 24 by splines 16), an output shaft 20 (e.g. connected to a ring gear 24) and a reaction member (e.g. a sun gear 25 connectable by a dog clutch/brake 14, 51, 68 with synchromesh 73, 74 alternately to the gear casing 11 for overdrive and the carrier 17 for direct drive), a casing 10, a lubricant reservoir and two paths for lubricant to the gearing (e.g. from 104 either via radial grooves 105 in  direct drive or via a missing spline 16, a bore  106, the hollow core of a planet gear pin 21 and a bore 61 in overdrive). Lubricant may be supplied to 104 from the sump either by a pump (112), Fig. 3 (not shown), or by being splashed round by the gearing to a trough 101 in one wall whence it flows through a conduit 102. The output shaft 20 may have a gear 41 to drive a speedometer and splines 33 to transmit torque. The splines 33 may have lubricant passages 37 to relieve pressure build-up and 108 to a main gear-box driving the shaft 13.
Patent GB-1047017-A (GB)
Title: Improvements in or relating to steering mechanisms
Inventor: MARTIN ERWIN HERBERT ERHARD
IPC: B62D1/19
Filed: 1963-03-06
Abstract: 1,047,017. Telemotor steering gear. DUNLOP RUBBER CO. Ltd. Feb. 20, 1964 [March 6, 1963], No. 8884/63. Headings B7H and B7V. A telemotor steering system for a vehicle includes a fluidoperated steering device 39 for rotating the steerable wheels of the vehicle and a control device (Fig. 1) comprising two fluid chambers 11, 12 defined within a container 2 by flexible rubber diaphragms 6, 6a rendered inextensible in the radial direction by nylon reinforcement and engaged by a member 17 displaceable under the control of the steering wheel 37. Each diaphragm 6, 6a includes a wire bead 8 secured within one of joints 9 between a cylinder 3 and cups 4, 5 forming the container 2, and an unreinforced central portion 24 surrounded by a wire bead 16. The diaphragm engaging member 17 includes hub portions 21 engaging the central diaphragm portions 24, and three spokes 19 extending through slots 20 in the container 2 to engage three-start threads 30 in a ring 29 carried by a cup member 31 rotatable with the steering wheel 37. The pitch of the threads 30 increases to either side of the mean position to provide a progressive steering action. An annular pressing 28 secures the container 2 to a framework 25 behind the dashboard of the vehicle. The steering device 39 (Fig. 3) includes a housing 41 secured to the vehicle frame and containing two chambers 42, 43, which are connected by pipes 67, 68 to the chamber 11, 12 of the control device and are closed by nylon-reinforced diaphragms 49 secured to a piston 57 in each chamber 42, 43 by bonding and rubberized steel cords 56 and to the chamber walls by beads 52 embedded in marginal recesses 53. A rod 61 slidable in guides 62 interconnects the piston 57 and arms 66 and ball-joints 59 connect the piston to the steerable wheels of the vehicle, The pipe 68 may include an accumulator comprising a short length of pipe expansible against a surrounding spring clip to accommodate differences in the volume of fluid in the chambers 11, 43 and 12, 42, or adjustment means may provide for equalizing the quantities before use. In anothet embodiment (Fig. 4, not shown), the diaphragm engaging member is stationary and the container 2 is displaced by the steering wheel. The steering device 39 may be pivotable about a vertical axis on the vehicle frame, the rod 61 being extended to rotate the wheels and the arms 66 being dispensed with. The control control device may be centrally disposed in the dashboard and connected by spring-loaded cables to a steering wheel on one side, or on both sides in a learner-driver car. The steering wheel may be adjustable about a horizontal axis. The invention may also be applied to a water-borne vessel, the control device being connected to the helm and the steering device 39 to the rudder.
Patent GB-915320-A (GB)
Title: Improvements in fuel flow proportioners
Inventor: MCCOURTY WILLIAM DONALD
IPC: B64D37/20
Filed: 1960-03-14
Abstract: 915,320. Mixing flowing liquids in proportion. HOBSON Ltd., H. M. May 14, 1961 [March 14, 1960], No. 8927/60. Class 86. [Also in Group XXVI] A fuel flow proportioner, for delivering to a common outlet 17, Fig. 1, equal proportions of fuel from two (or more) aircraft tank systems comprises for each tank system, a pair of meshing three - lobed cycloidal rotors 13, 13A, driven solely by the flow of fuel past them. The rotors are mounted on parallel shafts 14, 14A which are inter-connected by meshing gears so that all the pairs of rotors are constrained to rotate at the same speed. The proportion of fuel passed by each pair of rotors is determined by the clearance between them which is matched in accordance with the capacity of the associated tanks. A normally closed by-pass valve 18 loaded by a spring 16 is fitted for each pair of rotors and may be opened to allow flow in the event of seizure or failure of the rotors.
Patent GB-512958-A (GB)
Title: Improvements relating to electrically heated utensils
IPC: H01H37/12
Filed: 1938-03-23
Abstract: 512,958. Automatic control systems. PREMIER ELECTRIC HEATERS, Ltd., COLLINS, G. H., and TAYLOR, H. T. March 23, 1938, No. 8975. [Class 38 (iv)] [Also in Group XXXVII] Temperature.-In a thermostatically-controlled electrically-heated utensil such as an iron or kettle, a plate 10 at the base of the vessel carries a bracket 12 on which is mounted an insulating block 1'5 in which are moulded spring strips 18, 19, 20 which carry contacts 29, 30, 31 respectively which normally engage each other with a slight pressure so that a heating element 23 is in circuit and a heating element 22 is cut out. To the plate 10 is fixed a bimetal strip 40 which carries a U-shaped member 41 in an insulating block on which are threaded screws 44, 45. When the utensil is heated the bimetallic strip straightens and first the screw 44 engages and moves up a stiff extension of the strip 18 to separate contacts 29, 30 and connect heating elements 22, 23 in series, and then the screw 45 engages and moves up a stiff extension of the strip 19 to separate contacts 30, 31 and completely open the heating circuit. A cam 34 on a spindle 33 is manually operated to engage the lowest contact 31 and vary the initial position of all three springs so altering the operating temperatures. An alternative construction is described in the Provisional Specification in which a stud carried by the bimetallic strip passes from above through the top spring strip 18 which it engages from below by a head, and the spring strip 18 has a similar stud to engage the strip 19. The adjusting cam may be replaced by a face cam or screw.
Patent GB-948054-A (GB)
Title: An improved method of and means for protecting the ground or vegetation from the elements
IPC: A01G13/02
Filed: 1960-03-15
Abstract: 948,054. Covers for sports grounds. A K. STABLES June 13, 1961 [March 15, 1960], No. 9062/60. Heading A6D. [Also in Divisions A1, E2 and F2] A cover for use in protecting sports grounds from adverse weather conditions, comprises a sheet of plastics material such as polythene, spaced above the ground by means of inflated tubes, which are also of synthetic resin material and are bonded to one face of the sheet. As particularly described, the sheet comprises two rows of synthetic resin strips 10, 11, the strips of each row being joined together by means of sliding clasp fasteners 24, and the two rows being removably fastened together by means of interfitting extrusions 10a, 11a welded to the strips 10, 11 respectively. The said extrusions are formed with passageways 14, 16 which, when the cover is assembled, form continuous conduits through which air from a fan or compressor unit 21 is supplied to inflatable tubes 12 welded to the underside of the plastics strips, the air travelling between the conduit and the tubes via a series of ducts 20. The opposite edges 25 of the cover are anchored to the ground by means of inflatable tubes welded thereto and located in slotted pipes or tubes sunk into the ground, the other two edges of the cover being secured to power-driven rollers 29, whereby the sports ground is readily uncovered once the fastenings 24 and 10a, 11a have been released. Air from a combined heater and fan is circulated beneath the cover to regulate the temperature of the air trapped between the cover and the ground.
Patent GB-831776-A (GB)
Title: Jet engine noise attenuator
IPC: B64F1/26
Filed: 1958-03-21
Abstract: 831,776. Exhaust-silencers. LEMMERMAN Inc., C. W. March 21, 1958 [July 29, 1957], No. 9078/58. Class 7(2) A portable or fixed ground silencer for jet engines comprises a sheet metal casing 10, Fig. 2, with an upturned exit 14, a sound-absorbing lining 18 constructed as in U.S.A. Specification 2,674,336, and a diffuser 23 supported by vanes 22 and having a gas entry 26 for connection to or reception of a jet engine tail pipe and gas exit perforations 32 increasing in size and spacing towards its downstream end and having a total area at least equal to that of the tail pipe. The upstream perforations 32 are small enough to prevent passage therethrough of cooling air drawn in between the members 10 and 23. The diffuser 23 may be wholly conical and of wire mesh and supported at its front and rear only, the lining 18 being optionally omitted or disposed only in the area of the diffuser. Figs. 5 and 6 show a diffuser formed of axially spaced notched rings 239 with flanges 241 interconnected by ribs 243; such a diffuser may be used with a wire mesh diffuser formed as above covering it. In Fig. 8 a diffuser is formed by a perforated cylinder 424 and rings 447 supported by ribs 448. A core 449 and an annular air guide 446 are provided, together with supporting vanes 449<SP>1</SP>, 422<SP>1</SP> and 422.
Patent GB-686188-A (GB)
Title: Improvements in or relating to shin guards or shin pads
IPC: A63B71/12
Filed: 1950-04-13
Abstract: 686,188. Guards for games. BEAN & CO., J. H., and BEAUMONT, J. April 27, 1951. [April 13, 1950] No. 9094/50. Class 132 (ii). To prevent ankle-chafing, the bottom of a shin-guard having cane or like reinforcement 3 covered at the front by a sheet material 1 and at the back by padding 3x, is provided at the bottom with a pad 4 of soft material enclosing the bottom of the reinforcement and being thicker at the front than at the back. The pad is enclosed in soft material stitched to the front and back of the guard and a beading 5 extends across the top of the guard and down both sides to the bottom of the pad 4, the lower corners of which are rounded.
Patent GB-548104-A (GB)
Title: Improvements in the bottle pasteurisation of milk
IPC: A23C3/027
Filed: 1941-07-18
Abstract: 548,104. Endless conveyers. ENOCH, A. G. July 18, 1941, No. 9095. [Class 78 (i)] [Also in Groups VI and XVII] ! In plant for the bottle pasteurization of milk in which heat-sterilized bottles are fed from a washing machine to a filling machine, then to a capping machine and finally to a pasteurizing chamber, the hot bottles are conveyed between the operation parts of the plant by conveyers travelling in enclosed or shrouded passageways, heated by steam or hot water pipes or electrical heating elements located therein, to prevent any fall in temperature during transit from one operation part to another. One or more of the machines may also be shrouded. As shown, the bottles are conveyed by a slot conveyer E from a combined washing machine- A and filling machine B to a capping machine C and a crating table F when they are transferred to crates f which are carried by a conveyer G to a holding chamber D. The conveyer E is surrounded by a shrouding H, preferably formed with removable or hinged side panels h,. and hinged top panels h<SP>1</SP>, and heated by steam or hot water pipes h<SP>2</SP> controlled by a valve h<SP>3</SP> operated by a thermostat h<SP>4</SP>. The conveyer G is enclosed in a shrouding H<SP>1</SP> heated by pipes h<SP>5</SP> preferably controlled by a thermostat. The filling machine B and the capping machine C are shrouded by means of light metal frames fitted with transparent panels and removably or hingedly attached to the framework, and the enclosures may be heated as by pipes, which may be controlled by the thermostat h<SP>4</SP> or a separate thermostat arranged in the enclosure. The table F is also shrouded.
Patent GB-646862-A (GB)
Title: Work holder
IPC: B25B11/00
Filed: 1948-03-31
Abstract: 646,862. Joint-making packing. CALHOUN, O. H., and CALHOUN, A. H. March 31, 1948. No. 9119. [Class 122(iii)] [Also in Group XXIII] A vacuum work holder for securing sheet stock on a machine tool has a marginal groove fitted with a soft rubber gasket to make a seal with the work. The groove and gasket may be shaped as shown in Figs. 4 and 6; the gasket may be tubular and inflated with fluid under pressure through a valve as shown in Fig. 5. In a modification, the groove and gasket are shaped as shown in Fig. 8.
Patent GB-600354-A (GB)
Title: Process for the production of acridine derivatives bearing cyano substituents
IPC: C07D219/08
Filed: 1944-05-12
Abstract: Meso-substituted acridines having the general formula <FORM:0600354/IV(b)/1> are obtained by treating a meso-halogenated acridine, in the presence of an alkali metal or of an alkali metal hydroxide, with a cyano compound having the general formula CN.CH2X in which X represents a negative group such that the cyano compound is capable of forming an alkali metal derivative by replacement of a hydrogen atom of the methylene group with an alkali metal. Advantageously, there is present a substantially molecular proportion of alkali metal or its alkoxide with respect to the cyano compound. Specified cyano compounds: cyano acetic esters, e.g. of a lower or higher alcohol, e.g. methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, lauryl, oleyl, linoleyl, palmityl or stearyl alcohols.  An aralkyl, e.g. a benzyl, ester, may be used.  X may also represent: a group having the formula -CO.R3 wherein R3 represents an alkyl or aryl group, e.g. a methyl, ethyl, phenyl group; an aralkyl, e.g. a benzyl, radical which may contain one or more additional substituents in the benzene ring; or a nitrile.  The meso-halogenated acridines may contain one or more of the following nuclear substituents by p alkyl (e.g. methyl or ethyl), alkoxy (e.g. methoxy or ethoxy), nitro, amino, substituted amino, cyano and halogen in either or both of the benzenoid nuclei, e.g. 2-methoxy-9-chloro-acridine, 2-methoxy-6.9-dibromoacridine.  Specified reaction solvents are: anhydrous alcohol, benzene, toluene, xylene or dioxane.  Specified alkali metals include potassium and lithium.  In examples: (1) 9-chloroacridine is refluxed with a mixture of sodium and ethyl cyanoacetate in anhydrous ethyl alcohol to obtain ethyl (acridyl-9)-cyanoacetate; (2) to (8) there are refluxed, in ethyl alcohol mixtures of: (2) phenyl acetonitrile, sodium and 9-chloroacridine to obtain phenyl-(acridyl-9)-acetonitrile, yielding phenyl-(acridyl-9)-acetonitrile; (3) malodinitrile, sodium and 9-chloro-acridine, yielding (acridyl - 9) - malonodinitrile; (4) ethylcyanoacetate, sodium ethoxide, dioxane, 2-methoxy-9 - chloro - 6 - cyano - acridine yielding ethyl - (2 - methoxy - 6 - cyanoacridyl - 9) - cyanoacetate; (5) ethyl cyanoacetate, sodium ethoxide, 3-cyano-9-chloro-acridine, yielding ethyl-(3-cyanoacridyl-9)-cyanoacetate; (6) 2-cyano-9-chloroacridine, sodio cyanoacetic ester, yielding ethyl-(2 - cyano - acridyl - 9) - cyanoacetate; (7) sodio - ethylcyanoacetate, benzene, 2-dimethylamino-6 : 9-dichloroacridine yielding ethyl-(2-dimethylamino-6-chloro-acridyl-9)-cyanoacetate; (8) as in (7) using 2-methoxy-6.9-dichloroacridine as the acridine starting material.
Patent GB-592582-A (GB)
Title: Radio detection system
IPC: G01S1/02
Filed: 1944-05-12
Abstract: 592,582. Radiolocation ; artificial lines. STANDARD TELEPHONES & CABLES, Ltd. May 12, 1944, No. 9174. Convention date, March 5, 1943. [Classes 40 (iii) and 40 (v)] A pulse radiolocation system such as described in Specification 592,574 in which the range is obtained by bringing a reference pulse into coincidence with the echo pulse by means of a calibrated variable-delay line, is characterized by the provision of a delay line having attenuation due to both line resistance and a substantially -high leakage characteristic per unit length, whereby the steep leading edge of the output reference pulse from the delay line is maintained independent of variations in amplitude of the input pulse and of the amount of delay. In Fig. 1 synchronizing pulses 20 from the transmitter 10 are fed. to the sweep generator 21 to provide the time base AB on the cathode-ray tube 18 and are also fed to the delay line 31-38. The delayed pulses are passed through the limiter 73 and applied to the Y deflection plates of the cathode-ray tube together with echo signals from the receiver 14 which is blocked during transmission of the pulses by the circuit 19. A narrower reference pulse 82 can be produced by differentiating and limiting the output pulse from the delay line in the circuits 83 and 90. The delay line comprises a layer of dielectric material 33 disposed between two strips 32, 31 of conducting material of high permeability, e.g. permalloy, and a large uniform distributed leakage is obtained by using as the dielectric, insulating paper with a filler of powdered graphite, copper or iron. The line is terminated by the surge impedance 40 and the output is taken from the variable tapping 38, the position of which as indicated by the scale 76 gives the amount of delay and hence the range. The strips forming the line may be arranged in circles or in a spiral as in Specification 571,772. In a modification, Fig. 3, the line is composed of uniformly arranged lumped constants L, R, C and G. In this case, the steep leading edge of the pulse is preserved although some ripple is present on the trailing edge, Fig. 4 (not shown).
Patent GB-316328-A (GB)
Title: Improvements in electric accumulators
IPC: H01M4/56
Filed: 1928-03-27
Abstract: 316,328. Leitner, H. March 27, 1928. Electrodes. - Active material for a storage battery is made by saturating glycerine diluted with water with sulphate of magnesium, sodium or potassium and adding lead monoxide to form a paste. Crystals of the sulphate may be added to the oxide before the paste is formed. Specification 267,205 is referred to.