baber/WOPTO huggingface dataset:
Patent GB-724606-A (GB)
Title: Improvements in or relating to time dividers for use in radar apparatus
IPC: H03B19/00
Filed: 1953-05-22
Abstract: 724,606. Radar; pulse circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 22, 1953 [May 26, 1952], No. 14490/53. Classes 40 (6) and 40 (7). A radar system has a main pulse generator coupled to a plurality of pulse frequency-dividing stages for producing control pulses of the desired pulse-recurrence frequency. A selector pulse generator is connected to the divider chain and provides selector pulses, the rear edges of which are synchronized with the control pulses and which are used to gate a selector stage connected to the main pulse generator to periodically release trigger pulses. Distance marking pulses are derived from one or more of the divider stages for the indicator. In one embodiment an oscillator 1 controlled by a crystal 2 feeds main pulse generator 3, the pulses from which are fed to divider chain 4, 5, 6, 7 and 8. The trigger frequency pulses from divider 8 are used in unit 11 to synchronize selector pulses so that their rear edges correspond in timing to the frequency-divided pulses. The selector pulses are used to open gate 12 to pass approximately two pulses from generator 3, the first of which is effective to trigger blocking oscillator 13 to produce output pulses fed over line b to synchronize the time-base generator, through delay line 14 and over line c to modulate the transmitter, and through delay line 14 and over line d to synchronize the sawtooth generator 15 controlling the swept gain of the receiver. Switch 9 selects pulses from various points on the divider chain to use as range markers on the display. The selector circuit is shown in Fig. 4. The final pulse frequency-divider stage consists of blocking oscillator 18 which feeds a sawtooth waveform (Fig. 3 (a), not shown), cutting off sharply at the instants corresponding to the control pulses through resistor 22 to the grid of selector pulse generator 21. Valve 21 is normally cut off but produces a substantially rectangular pulse between the time the sawtooth reaches a certain value and the cut-off time. To obtain constant width selector pulses the circuit of valve 21 is stabilized by negative feedback resistor 23 and a resistor 25 in series with the screen-grid stabilizing tube 24. The output pulses are arranged to be substantially rectangular by utilizing positive feedback for A.C. only through triode 26. The selector pulses are fed to valve 34 to gate the pulses fed in at 32 from unit 3. The first of these to be effective initiates blocking-oscillator action to generate the trigger pulses which are shaped in the circuit of valve 35.
Patent GB-1527184-A (GB)
Title: Top pan precision balance
IPC: G01G7/04
Filed: 1977-04-06
Abstract: 1527184 Weighing apparatus METTLER INSTRUMENTE AG 6 April 1977 [14 Dec 1976] 14584/77 Heading G1W A top pan precision balance comprises a fixed e.m. load compensation device 10 having a magnet system 12, 14, 16 and a movable coil 26 in an airgap of the system; a frame 32, 42 attached to the magnet system by screws 44; a pan carrier 54 mounted on the frame by means 46 permitting vertical movement; and a lever 30 transmitting carrier movement to the coil wherein the frame contains non-rigid portions produced either by reductions 74 in the wall thickness or by apertures in the frame to reduce the effects of temperature variation between the magnet system and other parts of the balance. The mountings 46 include flexible members 48, 52. The lever 30 is pivoted on and within an aperture 76 in the frame by link 62.
Patent GB-925075-A (GB)
Title: Improvements in or relating to fused salt baths
Inventor: HEWSON ROBERT LESLIE
IPC: C21D1/46
Filed: 1958-05-07
Abstract: A fused salt bath composition for heat treating titanium and its alloys consists essentially of potassium carbonate and/or sodium carbonate with at least 6% of lithium carbonate, the fusion temperature being at least 420 DEG  C.  The lithium carbonate content is preferably 10-20% and the bath temperature is 850-950 DEG  C. Reference has been directed by the Comptroller to Specification 806,016.
Patent GB-419827-A (GB)
Title: Improvements in or relating to wireless (radio) receiving apparatus
IPC: H04B1/12
Filed: 1933-05-20
Abstract: 419,827. Wireless receiving systems. LAMBERT, P. L. V., Killard, Les Merriennes, St. Martin's, and RANDELL, H. H., 6, Court Row, both in Guernsey. May 20, 1933, No. 14596. Addition to 396,899. Drawings to Specification. [Class 40 (v).] The parent Specification comprises a bridge circuit arrangement for eliminating the effect on a mains-driven receiver of disturbing currents introduced therein from the supply mains. The present invention consists in modifying the components in said bridge so that the phase angle and amplitude of the interfering currents when rendered in equilibrium for one frequency, will remain balanced for other frequencies within a wide range.
Patent GB-1007937-A (GB)
Title: Process and apparatus for the production of coke or ore coke on a coking grate and for the recovery of gas of high calorific value
IPC: C10B53/08
Filed: 1962-04-16
Abstract: A method of producing coke and gas from bituminous carbonaceous material, particularly fine grained coking coal, on a stationary or moving grate, comprises spreading the coal 3 in a horizontal layer on the grate, igniting the <PICT:1007937/C4-C5/1> coal, periodically passing oxygen-containing gas, e.g. air, vertically through the coal via vertically-extending passages formed in the coal, and with drawing gas produced during the intervals between the supply of air. The passages may be formed by dies, e.g. hollow tubes, and may be circular or rectangular in cross-section, or continuous passages may be formed e.g. in two directions at right angles.  The passages are preferably made by rollers 5, 7 placed at the leading end of a moving grate, one or both rollers having ribs 6 which co-operate to form passages 2. The coal may be compressed before penetration by vibration. Alternatively, the coal may be led on to the moving grate as spaced, parallel strands.  Swelling of the coal during coking may be diminished by putting iron ore in the passages and on the layer 3. The air supply to the charge may be throttled to e.g. 10% its normal quantity during a degassing period of e.g. 5 minutes, during which time rich gas is removed from the space above the grate.  The air blast is restored, e.g. for 5 minutes, for reheating the charge, the exhaust gases being removed by a different outlet, controlled by a change-over device, to the rich gas outlet.  Alternatively, rich gas may be sucked out via the air box below the grate. Steam may be used briefly to purge the space above the grate before degassing.  Various methods of igniting all the charge are described. In one, an igniting gas is blown or sucked downwardly through the charge to ignite all the charge, air being passed upwardly.  Where spaced strands form the charge, the igniting gas may be introduced through pipes depending into the passages.  In this case, the air for combustion may be supplied above the grate. Alternatively, hot oxygen-containing gas, e.g. air for combustion preheated to above 500 DEG C., may be blown upwardly through the grate to intensified by acoustic vibrations. Four specific examples are described.
Patent GB-876504-A (GB)
Title: Improvements in or relating to gas turbine engines
Inventor: POPE GEOFFREY ALAN KENNETH
IPC: F01D17/16
Filed: 1959-04-30
Abstract: 876,504. Gas turbine engines; axial-flow compressors. ROLLS-ROYCE Ltd. April 25, 1960 [April 30, 1959; July 7, 1959], Nos. 14780/59 and 23272/59. Classes 110 (1) and 110(3). In a gas turbine engine, a compressor or turbine is provided with pivotally-mounted guide vanes and a vane operating device is disposed inwardly of the guide vanes, movement of the device effecting pivotal movement of the vanes. Means are disposed externally of the engine so as to effect movement of the vane operating device and a linkage is provided to connect the external means to the vane operating device, a portion of the linkage passing through a hollow vane-shape or strut which extends across the working fluid duct of the engine so that the linkage causes no obstruction to fluid flow through the engine. The invention is shown applied to a gas turbine jet engine of the by-pass type, the pivotally mounted vanes being the inlet guide vanes of the high pressure compressor. An actuating device such as an hydraulic or pneumatic ram is mounted externally of the engine and actuates a shaft 25 which extends radially of the engine across the working fluid passage through a hollow support strut 26. An extension 28 is secured to the radially inner end of the shaft and a lever arm 33 is secured to the extension; the lever arm carries a stub shaft 34 on which a roller 35 is rotatably mounted. The roller engages a slot 36 in a link 37, the link 37 being connected by bell-crank levers 40, 41 to links 42, 43 which are connected to further levers 44, 45. Each of the levers 40, 41, 44, 45 is splined on to a rod 47 being secured thereto by a bolt 48. Each rod 47 is rotatably mounted within fixed structure 51 axially of the engine, and each rod is provided with a radially-extending arm 52, the outer end of each arm engaging in a bush 53 which is rotatably mounted in a vane operating ring 54. The ring 54 is mounted for rotational movement within a channel section annular structure 55, 56 by means of rollers 58. Each inlet guide vane 65 is pivotally mounted on a spindle 63 which is formed with an actuating lever 62, the pin 61 of which engages within a bush 60 carried by the operating ring 54. In a second embodiment, the shaft 107 carries an arm 114 at its radially inner end, as in the first embodiment, the arm carrying a roller 115 which engages the forked end 116, 117 of a lever 118, 119 pivoted at its centre on a pin 125 which extends radially of the engine. The other end of the lever is formed with a pin 120 which engages a part-cylindrical bush 127 rotatably mounted in an insert 129 which is itself mounted in a frusto-conical operating ring 133. The ring is formed with a cylindrical extension 134 by which it is rotatably mounted in stator structure 136 by means of roller bearings 135. The operating ring 133 carries bushes 137 in each of which is journalled a pin 138 forming part of the operating crank arm 139.
Patent GB-1395706-A (GB)
Title: Flexible composite materials
IPC: B32B27/00
Filed: 1971-05-13
Abstract: 1395706 Foam plastics-parallel yarn laminates P FANGHANEL & CO Ltd 15 May 1972 [13 May 1971] 14792/71 Heading B5N A flexible composite material comprising a sheet of foamed plastics, e.g. a polyester-urethane or polyether-urethane resin, and having adhered to one surface a plurality of yarns extending side by side and generally parallel to an edge of the sheet is produced by rendering the foamed plastics tacky with an adhesive, e.g. by roller, knife or spraying or by applying a flame and thereafter laying the yarns on the tacky surface. The yarns may be closely-spaced but the spacing need not be uniform. They may be wound from a cop on to the foam or on to a beam or creel for subsequent laying, and may be passed through a comb or raddle which may be oscillated so that a pattern is built up. Successive layers of yarns may be applied, with varying orientations. The yarns may be coloured and the colour may vary in a yarn layer. A backing material may be applied to the other surface of the foam. Specified material are (i) floor coverings comprising woven jute backing and wool, acrylic, nylon or rayon yarns, (ii) wall coverings comprising paper or vinyl backing and (iii) curtain material comprising a textile lining as backing.
Patent GB-367656-A (GB)
Title: Arrangement for drawing hollow bodies of glass in the form of a tube or sleeve
IPC: C03B17/04
Filed: 1931-05-20
Abstract: 367,656. Drawing glass tubes. PYREX, 8, Rue Fabre d'Eglantine, Paris. May 20, 1931, No. 14874. Convention date, May 21, 1930. [Class 56.] In an apparatus for drawing tubes, the molten glass flows through a funnel-shaped member a<1> fitted to an aperture in the floor b<1> of a tank or container and completely submerged in the glass, the flow being regulated by a rotating bell c which dips into the glass and surrounds the upper edge of the funnel. The bell consists of a hollow cylinder closed at its upper end and supported by a central tubular shaft e through which air may be blown to maintain the bore of the glass tube. The shaft e is rotated by a pulley e<1>, and it passes through a ball joint f so that the inclination of the bell c can be varied. The shaft can be adjusted vertically by a nut g, and the joint f can be adjusted horizontally by moving its support along bars h, i arranged at right-angles to one another. Thus the position of the bell c can be adjusted both vertically and horizontally in order to alter the gap d, between its lower edge and the funnel, through which the glass flows. The bell also stops the flow of surface impurities into the funnel, and by its rotation renders the glass more homogenous. The glass tube z, as it is formed, is bent through a right-angle and is drawn away horizontally. During the period of bending, it is supported by a flexible trough consisting of V-shaped members k.
Patent GB-282592-A (GB)
Title: Improvements in upright insulators for high tension electric currents
IPC: H01B17/16
Filed: 1927-06-07
Abstract: 282,592. Berg, F. June 7, 1927. Insulators.-Upright insulators a for high tension cables are secured in seatings c provided with bosses c<1> to which the stems d are secured rigidly by screwing or by passing the ends through the bore of the bosses and riveting. The stems d have collars d<2> and are secured to the arms e by clamping plates e<2> and bolts f. The insulator is secured in the seating by casting in molten metal b.
Patent GB-1465006-A (GB)
Title: Air cleaner system for controlling the intake air temperature of an automotive internal combustion engine
IPC: F02M31/06
Filed: 1975-04-04
Abstract: 1465006 Heating IC engine charge FRAM EUROPE Ltd 4 April 1975 [4 April 1974] 15111/74 Heading F1B The air cleaner system of Specification 1280206 is modified by the provision of a non-return valve 1 in the vacuum line 28, 28 to the vacuum motor 24 which positions the valve arrangement 17, 19 controlling flow of heated and unheated air to the air cleaner 12. The valve 1 prevents rapid loss of vacuum in the motor 24 when the manifold vacuum falls rapidly on engine acceleration. The valve 1 is between the temperature responsive vacuum control valve 10 and the intake manifold 30.
Patent GB-1568657-A (GB)
Title: Portable signboard and stand
IPC: E01F9/688
Filed: 1978-04-18
Abstract: The stand consists essentially of a base frame (1), a rectangular tube (2) which can be inserted therein, and a sign (3). Welded onto the rectangular tube (2) are a U-shaped (5) and an L-shaped hook (6). The sign (3) is recessed on its upper edge (7) to form a tongue (8) and has on its lower edge (9) an indentation (10). For fastening the sign to the rectangular tube, the sign is pushed with its tongue (8) under the hook (5), laid parallel to the rectangular tube (2) and released, so that the hook (6) engages in the indentation (10). In this manner, the sign stand can be assembled and dismantled rapidly, which is important in particular in the signing of building sites on roads. <IMAGE>
Patent GB-1220479-A (GB)
Title: Improvements relating to photographic exposure control apparatus
IPC: G03B7/02
Filed: 1968-03-29
Abstract: 1,220,479. Photographic exposure control. INTERNATIONAL POLAROID CORP. March 29, 1968 [April 6, 1967], No. 15254/68. Heading G2A. A photo-metric exposure control apparatus has a diaphragm adjusting device operated in a first range of scene brightness levels to achieve an appropriate photo-metric value of photo-metric means and a shutter operative in a second range of brightness levels to vary the intensity of the light source of the photo-metric means. A diaphragm 10 comprises blades 20, 22 having a common pivot 24 and arms 28, 29 adjustable by a cam 30 rotatable by an actuator 31. The actuator 31 rotates a shutter speed cam 80 engaging a delay setting lever 72. Photo-metric means include a clamp 110 supplied by a battery 112 through a variable resistor 124 engaged by a contact arm 126 on an extension 125 of lever 72. In operation, a photo-metric balance between scene light and light from the lamp 110 is achieved by visually comparing a target 115 and appropriately adjusting actuator 31 to vary apertures 25 and 102. Further adjustment of actuator 31 causes cam 80 to vary the shutter delay through lever 72 while maintaining the aperture 25. Lever 72 adjusts the illumination provided by lamp 110 to correspond with a second range of scene brightness levels. When the level of illumination of the lamp 110 is brought into photo-metric correspondence with the scene light, as visually detected by the target 115, an appropriate shutter speed is set. The shutter comprises an opening blade 46 and a closing blade 48 having a shoulder 62 engaged by a pawl 60 to retain the blade in closed position for a period depending on the setting of a gear sector 68 engaging a gear 66 connected to a flywheel 64. Depression of actuator 31 rotates a cocking lever 52 which rotates the blades 46, 48 clockwise. Blade 46 opens under the influence of spring 87. Closing blade 48 is released after the delay period set by gear sector 68.
Patent GB-475820-A (GB)
Title: Composition for preventing the formation of ice in concrete
IPC: C04B28/02
Filed: 1936-06-02
Abstract: The formation of ice in cement or concrete is prevented by incorporating therein an aqueous solution of sodium or magnesium chloride and sodium or potassium silicate, or the product obtained by evaporating the solution to dryness.  The solution may comprise sodium or magnesium chloride 4 parts, potassium or sodium silicate 1 part, and water 15 parts; about 20 per cent of this solution may be incorporated in the cement or concrete mix or 5 per cent of the product obtained by evaporating the solution to dryness may be incorporated in the mix or premixed with the cement.
Patent GB-968277-A (GB)
Title: Improvements in or relating to bonding agents and processes and bonded assemblies produced therewith
Inventor: MCMILLAN PETER WILLIAM
IPC: C03C27/04
Filed: 1960-05-02
Abstract: A bonded assembly comprises a component of a ceramic material or a metal and a component of devitrified glass, the two components being bonded together either directly or with an intermediate layer of devitrified glass.  As described, a thin layer of a glass capable of controlled devitrification is applied to the surface of a metal component at which the bonded joint is to be made; and the component is then united by casting or pressing, or sealed by gas flame or high-frequency heating, to a body of a heat-sensitive glass.  Finally the glass metal assembly is subjected to heat treatment to devitrify both the glass body and the intermediate glass-layer. Devitrification or crystallization of the glass mass is achieved by a "nucleating agent," e.g. metallic phosphate, certain metallic fluorides, cadmium sulphoselenide and metals such as gold, silver and copper in the glass composition and treating the assembly with suitable heat treatment which comprises heating the assembly in a furnace in an atmosphere of nitrogen, "forming gas" or inert gases. The assembly is placed in a gastight enclosure and heated for preferably an hour at a constant temperature which is the dilatometric softening point of the glass after which the temperature is raised at 2-3 DEG  per minute to a second temperature generally in the range of 700 DEG  to 900 DEG  C. depending on the glass composition, the temperature being maintained constant for an hour. After the above process, which completes devitrification of the glass, the assembly is cooled to room temperature at a suitable rate. The Specification describes the composition of suitable glasses which after devitrification have substantially the same thermal coefficient of expansion as the metal component to which they are sealed.  In certain cases it is preferred to oxidize the metal component prior to application of the intermediate glass layer.  The metal member which is Ni-Fe alloy or a metal such as copper, or steel, may be electroplated with a metal, e.g. nickel or chromium, before the processes of oxidation and bonding. The above invention is employed to seal the end of a mineral insulated metal sheathed cable (M.I.M.S. cable).  A glass tube is placed around each conductor in a stainless steel sealing pot secured to the sheath.  The glass is then melted down and devitrified as above.  As described, the conductors are two wires of nickelchromium and nickel-aluminium alloy respectively, the insulation and the sheath being tightly compressed magnesia and stainless steel, respectively (Fig. 2, not shown). Specifications 924,996 and 943,599 are referred to.
Patent GB-620590-A (GB)
Title: An improved process for the manufacture of double or triple superphosphate
IPC: C05B1/04
Filed: 1946-05-21
Abstract: Double or triple superphosphate in granular form is prepared by mixing part only of the ground phosphate rock needed for the reaction with the whole of the sulphuric acid in digestion tanks 2, 3, 4, delivering the slurry of calcium sulphate and phosphoric acid produced to a continuous filter 5, passing the phosphoric acid to a reaction mixer 6 with the remainder of the ground rock, and delivering the slurry to a rotary conditioner or granulator 7, and a rotary drier 8.  The granules pass to a screening apparatus 9, from which the fines are recycled to the granulator.  Oversize particles pass to grinding mill 10.  In a preferred form, two-thirds of the rock in a relatively coarsely ground condition passes to the digesters, and one-third in a more finely ground condition to the mixer 6.  A <PICT:0620590/III/1> portion of the finely ground material may be byepassed to the granulator 7.  Specification 559,482 is referred to.
Patent GB-1303675-A (GB)
IPC: F16C17/12
Filed: 1970-04-01
Abstract: 1303675 Bearings GARRETT CORP 1 April 1970 [1 April 1969] 15483/70 Heading F2A In a fluid foil radial bearing each foil 18, Fig. 3, is mounted on a pin 16 and may be spotwelded thereto. The pin 16 may have a rectangular cross-section, and the foil 18 may have a portion 22 attached to a surface 24 of the pin and a portion 26 located adjacent a surface 28 of the pin and extending therefrom. Each foil and pin assembly is received by a respective channel 20, Fig. 4, in a bushing 12, and is retained in position by means of annular members 32, Fig. 1, and screws 34. The foils 18 may overlap each other and the pins 16 may extend beyond the foils as shown in Fig. 2. In a fluid foil thrust bearing foil and pin assemblies 56, Fig. 5, may be formed as a unit 53 which is mounted on a base 52 so as to support a rotating member 51.
Patent GB-638546-A (GB)
Title: Improvements relating to power-driven propelling means for boats
IPC: B63H20/00
Filed: 1948-06-09
Abstract: 638,546. Outboard motors. PUGH, Ltd., C. H., and PUGH, J. G. June 9, 1948, No. 15504. [Class 114] In 'a boat-propelling installation of the " stern oar " type an adjustable weight 1 is slidably mounted upon the propeller shaft casing 2 so that it can be adjusted along said casing and held or secured at the most suitable point for counterbalancing variations in the thrust of the propeller. The weight may be carried in a cradle 5, or may be in the form of a sleeve fixed at the desired position on the casing by a set-screw, or may be arranged to be adjusted along the shaft casing from the interior of the boat by means of a screw device. The invention may be applied to an installation of the kind described in Specification 629,416.