baber/WOPTO huggingface dataset:
Patent GB-1505637-A (GB)
Title: Catalytic hydrodealkylation of alkylaromatic hydrocarbons
IPC: B01J23/36
Filed: 1975-02-26
Abstract: 1505637 Catalytic hydrodealkylation INSTITUT FRANCAIS DU PETROLE 26 Feb 1975 [9 Sept 1974] 43008/77 Divided out of 1505112 Heading C5E [Also in Division Bl] A process for the catalytic hydrodealkylation of an alkylaromatic hydrocarbon comprises contacting the hydrocarbon, substantially sulphur-free, at a temperature in the range 400‹-650‹ C. in the presence of hydrogen, under a pressure in the range 1-40 kg/cm<SP>2</SP>, at a spatial velocity in the range 1-10 and a ratio of the hydrogen to the hydrocarbon, expressed as moles per mole at the outlet of the reactor, in the range 1 to 10 and in the presence of a catalyst comprising: (a) a carrier (e.g. alumina); (b) at least one element selected from chromium, molybdenum, tungsten, rhenium, and manganese, at a concentration in the range 0À05-20% by weight of the catalyst; (c) at least one additional element, different from component (b), selected from chromium, molybdenum, tungsten, rhenium, manganese, copper, silver, gold, zinc, cadmium, gallium, indium, thallium, germanium, tin and lead, at a concentration in the range 0À05 -20% by weight of the catalyst; the catalyst being alkali-metal-free.
Patent GB-1435365-A (GB)
Title: Controlling a laser beam during the engraving of gravure  printing surfaces
IPC: B23K26/08
Filed: 1973-09-13
Abstract: 1435365 Automatic control of gain CROSFIELD ELECTRONICS Ltd 6 Sept 1974 [13 Sept 1973] 43128/73 Heading G3R In a system for engraving gravure surfaces using a modulated laser beam, the effect of the beam due to a given modulating signal (i.e. the gain of the system) is kept constant by adjusting this quantity in response to the difference between the measured effect of a test signal and a reference value. The surface may comprise a metal workpiece in which are pre-etched cells filled with a material more easily decomposed or evaporated by the laser. As shown, laser 10 is modulated by picture signals from a scanner 14 whose operation is synchronized with the rotation of a gravure drum 12. Periodically e.g. once per revolution, an electronic switch 16 substitutes a ramp test signal from 22, the ramp being such as to embrace the signal strength necessary to initiate engraving. Onset of engraving is detected photo-electrically by 26 whose output opens a gate 28 for clockpulses from a generator 24 to a counter 30. The gate is closed at the end of the test signal and thus the number of gated pulses corresponds to the instant ( and hence the signal strength) that engraving started. If this differs from a number pre-set in the counter a D to A converter adjusts the gain of an amplifier 18 by an appropriate amount. The test band sensor may detect the difference in reflection from a lamp due to the onset of engraving Figs. 5 or 6, (not shown), or the resultant scattering of the laser itself. The sensor may detect and average the test bands produced during several preceding revolutions, or the current one only. It is mentioned that the surface may be a flat stationary one and that the depth of engraving due to a constant test signal may be measured instead of the time/ramp arrangement described.
Patent GB-1161499-A (GB)
Title: Positioning Device
IPC: G01B5/00
Filed: 1966-09-28
Abstract: 1,161,499. Machine tool details. BENDIX CORP. 28 Sept., 1966 [4 Oct., 1965], No. 43392/66. Heading B3B. [Also in Divisions F2 and G1] In apparatus for coarse and fine adjustment of a machine tool or gauging device, the coarse adjustment is effected by laterally moving shaft 18 by knob 24 to engage gear 20 with a rack 10 of a work-table. The fine adjustment is carried out by rotation of a further knob 34 to rotate shaft 18 through sun gear 28 and planet gears 30 and clutch 26, 42. During the coarse adjustment, surface 26 of the hub 22 is disengaged from clutch member 42 due to the lateral movement of the shaft 18, which is spring returned to the clutch engaged position. When the clutch is engaged friction due to the reduction drive locks knob 24 and shaft 18 against movement other than by use of knob 34. In a modification, the hub 22 is housed within knob 34 and the shaft return spring 44 recessed within the knob 24.
Patent GB-1254443-A (GB)
Title: Radar systems
Inventor: MCPHEDRAN ALEXANDER IAN
IPC: G01S7/03
Filed: 1968-09-12
Abstract: 1,254,443. Doppler radar; Gunn effect circuits. JAMES SCOTT (ELECTRONIC ENG.) Ltd. 28 Aug., 1969 [12 Sept., 1968], No. 43444/68. Headings H3T and H4D. [Also in Division G4] A C.W. Doppler radar system includes a microwave generator comprising a Gunn effect device mounted in a resonant cavity. The Gunn effect device 3 powered from a D.C. supply 6 generates a CW signal providing both radiated power and the local oscillator signal for the mixer diode 2, which may be the device 3 itself. The Doppler beat frequency is passed through an amplifier 7 to a further two amplifiers 9, 16. Amplifier 16 powers an internal loud-speaker 17 or an external loud-speaker through socket 18, to give an audible indication of the Doppler signal. The amplifier 9 is switchable in gain and band width, the switch also controlling the f.s.d. of the indicating meter 15. The Doppler signal is " squared up " in a Schmitt trigger 11, whose noise threshold is set by variable resistor 10 and this square wave drives a bi-stable 13 which gives a noise-free square wave at one half the Doppler frequency. This square wave drives a monostable 14, the short pulses from which are fed to a meter 15 which gives an indication of the speed of the object under surveillance, depending on the pulse repetition rate. Sockets are also provided at 8, 12 for outputs to oscilloscope and revolution counter respectively. There may be two separate aerials for transmission and reception when the local oscillator signal may be provided by leakage between the two. The system may be used for a burglar alarm detecting movement within a surveillance area in which case a Doppler signal opens a normally-closed relay, or for a tachogenerator, or in traffic study. Reference has been directed by the Comptroller to Specification 1,214,833.
Patent GB-902709-A (GB)
Title: Improvements in or relating to chain connection members and scrapers for scraper conveyors
Inventor: RICHTER GUENTER
IPC: B65G19/24
Filed: 1959-12-22
Abstract: 902,709. Chain couplings. KETTLER, O., and KETTLER, H., [trading as HAMMERWERKE HASPE, GEB. KETTLER]. Dec. 22, 1959, No. 43499/59. Class 24. [Also in Group XXX] A shackle for connecting scrapers to the chains of a double chain scraper conveyer consists of a U-shaped link 1 connected between adjacent links 2 of the chain and which has square-section ends 3 adapted to be received in recesses 4 in the adjacent end portion 5 of the scraper. A cover-plate 6 is used in conjunction with the link 1, the cover-plate also having recesses, these and the recesses 4 in the scraper each being of a depth equal to half the thickness of the ends 3. A bolt 7 clamps the link 1 between the cover-plate and the scraper. When clamped, a part 9 on the underside of the coverplate abuts the outer web of the link 1.
Patent GB-911099-A (GB)
Title: Improvements in and relating to sound producing devices
Inventor: CRAFT SYDNEY
IPC: A63H5/00
Filed: 1959-12-23
Abstract: 911,099. Toys. MUSICAL REEDS Ltd. Dec. 19, 1960 [Dec. 23, 1959], No. 43673/59. Class 132 (3). [Also in Group XXXVIII] A sound-producing device comprises an openended tubular housing in which are located a thin, flexible reed part and a separate, substantially rigid, reed part, the two parts being held together in assembled relationship within the bore of the housing by means providing frictional engagement, the housing being provided at one end with means which prevent the removal of the reed assembly through that end, but which allows the passage of air through the housing and being provided at the same end with a pair of spaced, outwardly-projecting flanges defining a recess therebetween for facilitating the attachment of the device in an aperture in the well of a hollow body. A tapered tube 5 houses a pair of metal reed members 11, 12 wedged therein by a cylindrical plug 7. A closure member 13 frictionally engages in the larger end of the tube and has an external flange 15, and a cross-bar or bars 16. The end of the tube has an external flange 6. The tube is placed in a flexible sleeve 18 extending within a hollow toy, the sleeve having a rib which engages in the groove between the flanges. Alternatively a single flange on the housing may engage in a groove in the toy. In the embodiment shown in Fig. 5, the plug comprises a wall 24 integral with a wall 25 extending from the tube 20. The tube has a frusto-conical portion 22 with an inturned flange 23 which engages in a groove between flanges 27, 28 on the closure member. A wire gauge 29 or a perforated diaphragm may be inserted in the closure member. A hollow flexible ball 33 within a stuffed toy has an aperture, the edge of which is gripped between flanges 26, 27 on the closure member. The housing may be made of plastic material.
Patent GB-1526427-A (GB)
Title: Narrow particle size distribution catalysts and a method of making them
IPC: B01J37/00
Filed: 1975-10-24
Abstract: 1526427 Agglomerated polymerization catalyst particles EXXON RESEARCH & ENG CO 24 Oct 1975 [13 Nov 1974] 43803/75 Heading C3P [Also in Division B1] Catalyst fines are agglomerated by working the fines with a particulate polytetrafluoroethylene. The polymer may be used as dry powder or as an aqueous suspensoid. The ingredients are worked together, e.g. under compressive shear, to encourage fibrillation of the polymer to provide a web of fibres to which the fines are attached. The preferred catalysts are of the Ziegler type or a component thereof, e.g. titanium chloride/organoaluminium mixtures or a TiCl 3 .1/3 AlCl 3  component thereof, which may have been ball-milled. They may be used for the polymerization of alpha-olefins, e.g. to produce polypropylene.
Patent GB-1041740-A (GB)
Title: Forming protective coatings on metal articles
IPC: B05D7/14
Filed: 1963-11-06
Abstract: A metal article is provided with a protective coating by cleaning with the vapours of a boiling chlorinated lower hydrocarbon, and then immersing it in a composition comprising a chlorinated lower hydrocarbon and an organic phosphate complex. The organic phosphate complex being prepared by mixing one mole of phosphorus pentoxide, 0.2 to 12.5 moles of a copolymer of alkyl alcohol and a styrene, and 0.3 to 5.0 moles of an alkylphenol. This phosphate complex forms the subject of Specification 986,893. The metal article may be ferrous or non-ferrous, e.g. aluminium, magnesium, copper, brass, bronze, and white metal.  The article may also be a galvanized or copper, nickel or cadmium plated ferrous surface or a chromated aluminium or zinc surface.
Patent GB-890042-A (GB)
Title: Film signalling means for a roll film camera
IPC: G03B1/66
Filed: 1959-12-28
Abstract: 890,042. Cameras. POWERS CHEMCO Inc. Dec. 28, 1959 [April 2, 1959], No. 44043/59. Class 98(1). A roll film camera has film delivery signalling means comprising a shaft rotatable during film feed, a signal device on the camera and means on, and rotated with, the shaft for intermittently engaging and actuating said signal device. In the embodiments, the film roll is mounted on a shaft and the film is led between two rollers to the camera press board by the manual rotation of one of the rollers. As the shaft rotates, a serrated disc mounted thereon intermittently engages one end of a blade spring, mounted at the other end on a thin metal film roll casing, thereby causing the spring to vibrate and make an audible noise. The spring is rotatably mounted on the casing so that it can be moved out of the path of the disc during reloading of the camera. Alternatively, the spring may be attached to a pendulum carrying a liquid level switch of a signal circuit the switch being closed every time engagement of the spring and disc causes the pendulum to rotate. In the embodiment shown in Fig. 3 rotation of the shaft 16 causes a square cam 50, connected to it by a pin 52 and recess 54, to rotate intermittently. As cam 50 rotates each corner in turn pushes downwards a spring blade 56, pivoted at 60 to the casing '10, which then springs back when the corner has passed so that a pin 62 at the free end thereof moves a pin 66 on a spring 64 upwards and closes a switch of a signal circuit 70 which produces a flash of light. In the embodiment shown in Fig. 6 a disc 105 rotatably mounted on the shaft 16 has hammers 110 attached to it by springs 106. If the shaft is rotated in a predetermined direction a pin 104 on it is engaged by a blade spring on the disc and the disc is made to rotate. During this rotation the hammers are intermittently moved against their springs by inclined flanges 118 on the casing 10 and then released so that they hit casing 10 and produce an audible sound. Specification 367,903 is referred to.
Patent GB-1481459-A (GB)
Title: Strain gauge apparatus
IPC: G01L1/22
Filed: 1974-10-11
Abstract: 1481459 Strain gauge apparatus; measuring resistance HONEYWELL Inc 11 Oct 1974 [2 Nov 1973] 44069/74 Headings G1N and G1U Strain gauge apparatus comprises resistors 18, 20 mounted on a substrate so that they are strained and alter in resistance in response to an environmental pressure change, amplifiers 24 and 29 with inverting 25, 30 and non-inverting 26, 31 inputs and outputs 27, 32, a circuit 33 connecting inputs 26, 31 to a current sink at or near earth potential, resistor 18 being connected between input 26 and output 27 and resistor 20 between input 31 and output 32, to keep the currents of resistors 18, 20 constant irrespective of their resistance change, bearing means 37 for adjusting these currents and differential circuit 47 with inputs 50, 51 connected to resistors 20, 18 and output 52 giving a voltage proportional to the difference of the voltages across 18, 20 due to their resistance variation. The thin circular silicon substrate 12 is integral with a circular sidewall which with a silicon back plate with an access channel forms a cylindrical pressure chamber, and has diffused into it resistors 18, 20 which are mutually perpendicular such that the resistance of one is inversely proportional to the resistance of the other. Amplifiers 24, 29 have input  impedances above 250 k# and output impedances below 100 #. Resistors 34, 35 and 36 have a low value so that inputs 25 and 30 are at less than 1 volt from earth potential. Output circuit 62 is an amplifier. Temperature scale correction circuit 75 has a temperature sensing resistor 77 diffused into the substrate 12 supplying amplifier 79 whose output is adjusted by variable resistor 88, temperature correction amplifiers 90, 100 and 110, slope setting resistor 121 and linear temperature compensating resistor 124. In operation the D.C. current through resistors 18, 20 is first adjusted by potentiometer 44. Resistor 36 is altered to vary the proportion of measured voltage fed back through linearizing feedback resistor 60 until the voltage at 52 is relatively linear with the pressure in the chamber as it varies from 3 to 32 inches of mercury. The space of the measurement voltage at 52 reaches a minimum value at a particular temperature for which the output of amplifier 79 is adjusted to zero by resistor 88. Resistors 122, 108 and 119 are adjusted so that the appropriate temperature correction voltages for amplifiers 90, 100, 110 respectively or for resistor 121 are transmitted by line 152 for the range of temperature for which each is connected by switching circuit 130.
Patent GB-1040189-A (GB)
Title: Improvements in and relating to domestic electric heating appliances
Inventor: VIVIAN CHARLES HENRY
IPC: F24H3/08
Filed: 1963-11-11
Abstract: 1,040,189. Electric fires; air heating apparatus. PLANET JIG & TOOL CO. Ltd. Oct. 27, 1964 [Nov. 11, 1963], No. 44422/63. Heading F4S and F4W. A domestic electric fire comprises a casing 1, reflectors 3 situated behind bar heating elements 2, and a liquid container 4 located behind the reflectors, the front wall of the container being in contact with and following the contour of the reflectors. Heat is conducted by the reflectors to the container and liquid therein which circulates through a sinuous conduit 5 which acts as a heat exchanger. A fan 6 is mounted at the back of the casing to aid convection and cold air, drawn into the casing through a vent 8 and a grille 10 located respectively at the back and below the heating elements at the front of the casing, circulates round the container 4 and conduit 5 and the heated air is ejected, into the room containing the fire, through a grille 9. An immersion heater 11 may be provided in the container 4 to assist the heating of the liquid or to act as the only heat source when the heating elements are not in use. The container 4 may be connected to radiators, which form a unitary structure with or are remote from the fire, or it may be connected to a hot water system.
Patent GB-958977-A (GB)
Title: Improvements in or relating to changing display signs
Inventor: HAUSER MAURICE
IPC: H05B41/44
Filed: 1960-12-30
Abstract: 958,977. Changing signs. DUMABURN Ltd. Dec. 29,1961 [Dec. 30, 1960], No. 44831/60. Heading G5C. A changing sign consists of an endless chain 37 having its links 38, 39 in the form of channelshaped frames adapted to removably carry indicia panels across an internally illuminated window formed in a coffin-shaped box, see Fig. 6 (not shown), the vertical gap existing between adjacent links 38, 39 being masked by light traps 65. The chain is provided with rollers 69 co-operating with sprocket wheels 36 and a guideway 72, 72a. The chain is drive by an electric motor 19 through a spring loaded friction clutch and a free wheel drive, see Fig. 3 (not shown), a cooling fan being provided for the motor and the clutch incorporating balls which give a clicking sound when the chain is jammed. Each link supports a yoke 51 carrying a rubber tyred wheel 55 engaging a guideway. The indicia panels are made of synthetic resinous material and are partly opaque and partly translucent, or transparent or formed with a "reeded" surface to give a scintillation effect. The sign may be mounted on feet or suspended by chains.
Patent GB-1046228-A (GB)
Title: Improvements in or relating to land vehicles
IPC: B62D33/06
Filed: 1963-11-13
Abstract: 1,046,228. Steering and controlling vehicles. C. VAN DER LELY N.V. Nov. 13, 1963 [Nov. 30, 1962], No. 44901/63. Heading B7H. A motor vehicle has a seat 20 pivotable between two settings in which it is selectively retainable by pin 25 (Fig. 4, not shown), and a steering wheel 16 and steering lever 37 which are alternatively accessible to a driver of the vehicle in the two seat settings. Two steering levers 37, 38 are provided, mounted on shafts 29, 32 with interengaging gear-wheels (Fig. 5, not shown), so that the levers move in opposite directions, lever 37 being coupled to steering drop arm 14 by rod 40. Duplicate clutch pedals 17, 46 and brake pedals for the individual rear wheel brakes are provided for operation in the two settings of the seat, the pedals 46, 59 and 55 being respectively mounted on one end of shafts 45 and 58 and rotatable tube 52, the other ends of which are connected through arms 48, 60 and 56 and rods to the pedals 17, 18, 19.
Patent GB-1015573-A (GB)
Title: Improvements in interrupter devices for ignition systems
Filed: 1962-11-30
Abstract: 1,015,573. Interrupters. ROBERT BOSCH G.m.b.H. Nov. 30, 1962 [Jan. 9, 1962], No. 45310/62. Heading H2B. An interrupter device in a distributer housing has its circuit connections in the form of plug-and-socket connections. An insulating element 11, Fig. 1, fits into the housing 10 and has a flat pin 13 on to which a clip socket 14 of a cable 15 engages. A similar plug-andsocket connection joins the cable 15 and interrupter lever. The cables may be joined to the capacitor by similar push-in attachments and with the input cable passing through a rubber grommet in the housing or with the flat pin on the capacitor extending insulatedly through the housing.
Patent GB-1146162-A (GB)
Title: Improvements in and relating to heat exchangers
IPC: F28F13/12
Filed: 1966-11-19
Abstract: 1,146,162. Tubular heat exchange elements. AMERICAN RADIATOR & STANDARD SANITARY CORP. 19 Nov., 1966 [27 Dec., 1965], No. 45360/66. Heading F4S. A tubular heat exchange conduit 11 contains a turbulator element formed of rod-like material and shaped so as to provide portions of the element extending generally transversely of the longitudinal conduit axis in not more than four planes extending lengthwise of the conduit, the turbulator element engaging the conduit 11 at spaced points along its length. In one form of turbulator shape suitable angling of the turbulator wire 25 results in a generally spiral pattern, the end view of which is of square shape, as shown in Figs. 14 and 15, or triangular shape (Figs. 12 and 13, not shown). In alternative forms (Figs. 8-11), the elements have longitudinal undulations projecting outwardly towards the interior surface of the conduit 11 which lie in three or four circumferentially spaced radial planes, the transverse cross-section so produced being either Y-shaped as shown in Figs. 8 and 9, or " cross " shaped (Figs. 10 and 11, not shown). Simpler forms (Figs. 3-7, not shown) have longitudinal undulations (sinusoidal or irregular) which lie in a single plane. The turbulator element may alternatively consist of a central wire with cross-wires attached at regular intervals (Fig. 5, not shown).
Patent GB-1117754-A (GB)
Title: Measuring temperatures
IPC: G01K11/22
Filed: 1965-10-27
Abstract: 1,117,754. Temperature measurement utilizing acoustic energy. CENTRE NATIONAL DE RECHERCHES METALLURGIQUES. 27 Oct., 1965 [31 Oct., 1964], No. 45427/65. Heading H4D. In a system for measuring the temperature of a region, a standing wave is set up in an acoustic waveguide located in the region and the acoustic pressure at a given position in the guide is sensed. In the embodiment of Fig. 4, a loudspeaker 3 energized by an oscillator 7 (or A.C. mains) sets up a standing wave in a guide 1 with a closed end 2, and the acoustic pressure at a point 5 (preferably at or near a pressure node of the standing wave) is determined by a microphone 6 coupled to a probe 4, the filtered and amplified output of the microphone being indicated on a voltmeter or oscilloscope 9. Temperature changes in region 20 surrounding the guide 1 cause shifts of the standing wave pattern, and may be determined from the corresponding measured pressure changes. In an alternative method of operation, the probe 4 may be moved along the guide 1 to maintain the point 5 coincident with a pressure node, the temperature being derived from the position of point 5 by an appropriate calibration. The distribution of temperature along the guide 1 may be determined from the acoustic pressure distribution within the guide. Temperatures in different parts of region 20 may be determined by moving the guide 1 and probe 4 together within the region 20. In an alternative embodiment (Fig. 1, not shown), the oscillator 7 output level is varied to maintain a given acoustic pressure at the point 5 and this output level provides an indication of temperature. Various arrangements of the probe 4 and guide 1 are illustrated (Figs. 7, 8 and 9, none shown). The guide 1 may be made of alumina, silicon carbide or steel of a specified composition. The temperature of dust, dust-laden gases, scale, slag and molten metals may be measured.
Patent GB-1059948-A (GB)
Title: Improvements in or relating to grafted copolymers
IPC: C08F2/02
Filed: 1963-11-20
Abstract: Graft copolymers are made by polymerizing styrene in the presence of a terpolymer of ethylene, propylene and a non-conjugated diene. Polymerization is preferably carried out by ozonizing the terpolymer by the process described in Specification 883,791, and then heating the product with styrene.