baber/WOPTO huggingface dataset:
Patent GB-1452087-A (GB)
Title: Process for regenerating a deactivated reforming catalyst
IPC: B01J27/32
Filed: 1973-11-09
Abstract: 1452087 Regenerating reforming catalysts SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 9 Nov 1973 [13 Nov 1972] 52039/73 Heading B1E [Also in Division C5] Catalysts comprising a platinum group metal, germanium and a halogen on a refractory oxide support are regenerated by contacting the catalyst at an elevated temperature with an oxygen-containing gas to remove carbonaceous deposits, contacting the catalyst with an inert gas-containing oxygen, steam and a lower halogen to effect halogenation, drying the catalyst with an oxygen-containing gas and contacting the catalyst with a hydrogen-containing gas to reduce the platinum group metal.
Patent GB-1414153-A (GB)
Title: Irradiation of articles
IPC: G21K5/02
Filed: 1972-11-10
Abstract: 1414153 Irradiation apparatus; infra-red ovens RANSBURG CORP 10 Nov 1972 [10 Nov 1971] 52122/72 Headings H2H and H5R An apparatus for irradiating objects 15 with ultra-violet, visible, or infra-red light comprises one or more sources 12 of such light substantially surrounded by a reflector 18 arranged to reflect the light back towards the source and means such as a conveyer 11 for transporting the objects along an arcuate path between the source and the reflector and simultaneously rotating the objects so as to expose substantially all aspects of the objects to uniform irradiation. Instead of an elongated source a shorter source can be reciprocated along the axis of reflector 18. The apparatus can be ventilated or an inert gas introduced through grill 40 and extracted through stack 28.
Patent GB-1122226-A (GB)
Title: Production of expanded thermoplastic synthetic resins
Inventor: HANSEN KARL-FRIEDRICH
IPC: C08J9/12
Filed: 1965-12-09
Abstract: An expanded thermoplastics material is made by heating an expandable thermoplastic crystalline material to a temperature above its softening point and cooling with shaping, the plastics material used containing (a) an emulsion consisting of a liquid in emulsified form which is dispersed under pressure in the molten plastics material, said liquid having at least one constituent which boils below the m.p. of the plastics material and having a viscosity 0.01-10 times that of the plastics material at the temperature at which the emulsion is prepared, and said pressure being higher than the v.p. of the liquid at said temperature, and (b) at least one constituent which boils below the m.p. of the plastics material.  Exemplified thermoplastics are polyethylene, polypropylene, P.V.C. or ethylene/vinyl acetate copolymer, all suitably having a crystallinity of at least 20%.  The emulsified liquid may be water, ethanol, methanol or acetone, containing P.V.A., polyalkylene oxides, polyvinylidene chloride, ammonium polyacrylates, or polymethyl methacrylate. Blowing agents may also be present; e.g. ammonium salts or ammonia or CO2 dissolved in water.  The ingredients may be compounded under, e.g. a nitrogen pressure of 5 at., and subsequently have (a) the pressure released to cause foaming or (b) the pressure maintained during cooling to give a potentially foamable product, which may be heated, e.g. in the form of granules in a mould to expand it.
Patent GB-1151078-A (GB)
Title: Improvements in or relating to D.C. Voltage Regulators.
IPC: G05F1/573
Filed: 1966-11-22
Abstract: 1,151,078. Automatic voltage control. ALBISWERK ZURICH A.-G. Nov.22, 1966 [Jan.26, 1966], No.52226/66. Heading G3R. A voltage regulator includes input terminals E1, E2; output terminals A1, A2; a series transistor HS which is controlled by a comparator 1 in dependence upon output voltage variations as detected by a voltage divider R5, R6, R7; and a circuit which protects the regulator against a sustained overload, a short-circuit, and excessive ripple in the supply voltage. The protective circuit comprises a series resistor in the form of a potentiometer R1 which carries the load current and which is inter-connected as shown with a bi-stable circuit BS the output of which is applied to the base of the series transistor HS; one input to control the bi-stable circuit is derived from the series resistor R1 over an integrating circuit R2, C1, a second input is derived from a circuit including Zener diode G and transistor H3 associated with the resistor R1, and a third input is derived over a capacitor C2 connected to the common line between terminals E2, A2. In operation under normal conditions there is no output from the bi-stable circuit BS and the transistor HS is controlled in known manner to maintain constant the output voltage across terminals A1, A2. If the load current becomes excessive the voltage across resistor R1 will rise and C1 will charge up at a rate depending on the time constant of the circuit R2, C1 until the voltage on C1 reaches a value sufficient to trigger circuit BS which then produces an output signal to render transistor HS non- conductive; under short circuit conditions the voltage drop across resistor R1 becomes sufficient to render Zener diode G conductive, so that a triggering signal is applied to the circuit BS over transistor H3. If the supply voltage has an excessive ripple content, the capacitor C2 passes the ripple voltage to the input of the bi-stable circuit BS, which is thus triggered when the instantaneous ripple voltage exceeds the response voltage of the circuit. The voltage regulator is thus protected against abnormal operating conditions .
Patent GB-1309488-A (GB)
Title: Percussive photoflash lamp and manufacturing method
IPC: F21K5/14
Filed: 1971-11-10
Abstract: 1309488 Flash-bulbs GTE SYLVANIA Inc 10 Nov 1971 [20 Nov 1970] 52282/71 Heading G2L [Also in Division C1] Fulminating material for use as the priming charge of a percussively ignitable flash-bulb contains a chlorate salt having a solubility in water exceeding 15% by weight, the salt having a cation which does not promote oxidation of the red phosphorus or phosphorus-containing compounds in the material. Suitable cations are sodium, calcium, lithium, magnesium, aluminium and zinc, and the phosphorus-containing compound may be phosphorus sesquisulphide. The material may be made by a method which includes the step of mixing an aqueous slurry of phosphorus or a phosphorus-containing compound with an aqueous solution of the chlorate salt.
Patent GB-1153910-A (GB)
Title: Improvements in and relating to Load-Controlled Invertors or Frequency Changers
IPC: H02M7/516
Filed: 1966-11-24
Abstract: 1,153,910. Starting inverters or frequency changers. ELIN-UNION A.G. FUR ELEKTRISCHE INDUSTRIE. 24 Nov., 1966 [26 Nov., 1965], No. 52671/66. Heading H2F. [Also in Division H3] Oscillation of a self-oscillating inverter having a resonant circuit 1, 2, is initiated by interrupting an auxiliary current in the inductor 2. As shown, the winding 2 of an inductive heater is supplied with current at 1.5 to 4kc/s from an inverter comprising a bridge of four thyristors 5 ... 8 supplied with direct current via an inductor 3. Initially, thyristors 4 6, 7 should be conductive giving inverse currents is and i H , in inductive load 2, the latter being derived from a transformer 11 via an inductor 10. Oscillation is initiated by triggering thyristor 9 which turns off thyristor 4, creating a ringing oscillation in the circuit 1, 2. Control circuits (not shown), are provided so that appropriate pairs of thyristors 5... 8 are alternately turned on in sequence. Thyristor 9 is finally extinguished by opening contacts 16. The D.C. supply for the inverter may be derived from a controlled rectifier supplied from alternating current mains so as to form a frequency changer.
Patent GB-1115829-A (GB)
Title: Method of and apparatus for manufacturing welded wire mesh
IPC: B23K11/00
Filed: 1966-11-24
Abstract: 1,115,829. Welding by pressure. E V G ENTWICKLUNGS-U-VERWERTUNGS G.m.b.H. 24 Nov., 1966 [7 April, 1966], No. 52706/66. Heading B3R. In making wire mesh by welding continuous longitudinal wires to transverse wires in cut lengths at their crossing points, the transverse wires being introduced at insertion points and conveyed with the longitudinal wires to welding points, mesh of a standard transverse wire spacing is produced by inserting two transverse wires simultaneously conveying them a distance of twice the standard spacing to the welding points and welding them simultaneously, while mesh of different spacing is formed by inserting and welding transverse wires one at a time. The conveyer consists of spaced rails 1 having hooks 27 or notches 28 for engaging the transverse wires 30 and connected at their forward ends by a beam. The beam is reciprocated by a crank pin 19 and is moved angularly by a cam 18 the connecting linkage being such that the rear ends of the rails 1 move through an orbital path. For welding standard mesh, pairs of transverse wires 30 in insertion guides 31 having covers 32 removed periodically are picked up by the rails 1 and are conveyed to the welding points, the rails 1 moving the welded mesh at the same time. Welding is effected by active electrodes 39 on supports 37, 38 connected to positive and negative bus-bars 35 and passive electrodes 41 connected by current bridges 40. A common housing 42 supported by pivoted arms 48 and adjustable parallel to the longitudinal wires by handles 52 is reciprocated by eccentrics 50 and is connected by springs 44 with vertically slidable stirrups 43 carrying pins 46 to which the spring clips 47 on the bridges 40 may be attached. For welding non-standard mesh a separate welding electrode line may be used or two of the active electrodes 39 are used and the bridges 40 are replaced by bridges 40a each having one electrode 41 which does the welding and a forked connector 41a having curved ends which engage an electrode 39 to complete the welding circuit. The location of the housing 42, the bridges 40a or the location of one of the insertion guides is selected or adjusted to provide the required mesh spacing. The stroke of the rails 1 is adjusted, e.g. by an adjustable connection in the connecting rod 20.
Patent GB-1216477-A (GB)
Title: Photographic apparatus
Inventor: CLARK CHARLES WILLIAM
IPC: G03B17/53
Filed: 1967-11-20
Abstract: 1,216,477. 477. Photographic apparatus. C. W. CLARK. Nov.20, 1968 [Nov.20, 1967], No.52749/67. Heading G2A. Photographic developing apparatus, e.g. for use in an automatic photographic kiosk Fig.1, (not shown), comprises eight processing tanks 41; a pair of continuous chain conveyers 33 above the tanks, from between which chains carriers 70 for exposed photo-sensitive sheets are suspended in pendulum fashion; and upper and lower rows of sprockets 31, 32 defining a zig-zag path for the lower run of the chains 33 such that each carrier is dipped into and withdrawn from the tanks in succession as the chains advance. Sequence of operations. After a length of photosensitive material is exposed by the kiosk camera, it is fed towards feed in rollers 52 and the exposed length cut off. The strip trips a micro-switch (M7) Fig. 7, (not shown) which causes a switching unit to switch on a cam motor, which in turn starts the conveyer drive motor. The chains 33 are advanced until a switch 72, forming part of a carrier 70, trips a micro-switch (M8) indicating that a carrier is correctly positioned to receive the cut off sheet. Tripping this switch (M8) stops movement of the conveyer and starts a motor (101) to drive rollers 52, 53, 54 to feed the sheet into the waiting carrier. As the sheet clears the rollers 54 it trips a microswitch (M9) stopping the motor (101); starting the conveyer motor via the cam motor; and feeding a positive pulse to a counter. The chains 33 are advanced to dip the filled carrier in the left hand tank 41. Then another stud 72 trips a microswitch M14 causing the conveyer motor to stop with the sheet in the tank. Then ensues a dwell period of four seconds before the cam motor, now rotating continuously, restarts the conveyer motor to withdraw the filled carrier from the tank, while the next carrier enters the tank. During the ensuing dwell period the first carrier drains into the first tank. This stepwise movement continues until the carrier reaches the right hand end of the apparatus, when the upper ends of the carrier are carried along the conveyer upper run 34 while the carrier engages a shield 90 thereby inclining the sheet. The upper  edge of the sheet eventually trips a micro-switch (M10) to start a feed out motor (105), the sheet being withdrawn from the carrier and fed out by rollers 55-58. The feed out motor is stopped after its associated driving chain has completed one revolution. As the sheet leaves rollers 58 it trips a micro-switch (M12) which delivers a negative pulse to the counter. When the resultant pulse summed by the counter is zero, it causes the switching unit to switch off the cam motor. Hence the next time M14 is activated to switch off the conveyer motor, it will not be restarted after four seconds.
Patent GB-1247979-A (GB)
Title: Nut products and process for preparing same
Inventor: WELLS PHILIP RICHARD
IPC: A23L25/00
Filed: 1969-10-31
Abstract: 1,247,979. Coated nutmeats. CPC INTERNATIONAL Inc. 31 Oct., 1969, No. 53635/69. Headings A2B, A2D and A2Q. Nutmeats are coated with a mixture of mannitol and sorbitol, the coating comprising 50-90% by wt. mannitol and 10-50% by wt. sorbitol, to make them attractive in appearance and more stable against deterioration. The mixture may also comprise a colouring material and salt. The nutmeats may be further coated with salt, turmeric, oleoresin of paprika, and colouring material (e.g. caramel, orange and yellow colours). The nutmeats may be preheated and dipped in or sprayed with the molten mixture or an aqueous solution of the mixture. The nutmeats may be roasted in air prior to coating or roasted whilst immersed in the molten mixture. The nutmeats may be whole, broken or ground. Nuts specified are peanuts, walnuts, pecan nuts, cashew nuts and almonds.
Patent GB-1097352-A (GB)
Title: Improvements in or relating to burners for furnaces
Inventor: WARD TREVOR
IPC: F23D14/66
Filed: 1965-12-20
Abstract: 1,097,352. Burners; air preheaters. HOTWORK Ltd. Dec. 15, 1966 [Dec. 20, 1965], No. 53913/65. Headings F4S and F4T. A burner inserted in a furnace wall 10 comprises a tubular member 14 defining a combustion zone which is supplied with gaseous fuel and air, the air having been preheated by combustion gases in an annular heat exchanger 26 surrounding the gas fuel inlet pipe 23. Heated air is supplied from the heat exchanger through openings 27p to a chamber 16 from which it is distributed to the combustion zone via annular spaces between casing 14 and tube 18, and between tube 18 and tube 17. Gaseous fuel is supplied to the latter space from pipe 23 through lateral branches 25. Fuel oil may be supplied through a nozzle 47. Combustion gases are drawn from the combustion zone via an apertured shroud 36 to the heat exchanger by means of compressed air injected into the exhaust pipe 42 through nozzle 43. The heat exchanger 26 comprises concentric tubes 29 defining a plurality of annular passages 31 surrounding the gas pipe 23. Annular headers 27, 28 at each end of the tubes comprise open ended rings 27c 28c which each carry six radial webs 27d, 28d defining six segmented chambers 27c, 28c. Arcuate ribs 27f, 28f extend between the webs, the ribs in each segmented chamber being offset radially with respect to the ribs in adjacent chambers, and the ribs in each chamber being arranged to close alternate annular passages defined by the tubes 29, so that one set of alternate annular passages is connected to one set of alternate chambers in both headers, and the other set of alternate passages is connected to the other set of alternate chambers in both headers. Heat exchange takes place through the walls of the tubes 29 since the gases may flow through the blind portions of the passages 31 from adjacent open portions. In a second embodiment of the invention, Fig. 5, a tubular member 54 forms a combustion space 65 and a block 56 of refractory material closes the inlet end of this space and is connected to the member 54 by circumferential rods 59. A gas supply pipe 60 passes through the centre of block 56 and air is supplied from a chamber 73 through pipes 78 passing coaxially within an annular array of bores 75 in the block. From the pipes 78 the air enters an annular cavity 66 before passing to the combustion space via radial openings 67. Combustion gases are drawn from the space 65 via the bores 75 to a chamber 72 by the ejector effect of air passing from chamber 73 through a nozzle 81.
Patent GB-1356210-A (GB)
Title: Photomask
IPC: G03F1/54
Filed: 1972-11-22
Abstract: 1356210 Vapour depositing photomasks INTERNATIONAL BUSINESS MACHINES CORP 22 Nov 1972 [27 Dec 1971] 54025/72 Heading C7F [Also in Divisions B6 and G2] Eu 2 O 3  doped with (a) Fe 2 O 3  or (b) Fe is vacuum deposited or sputtered in a ratio of 9 to 1 or 6 to 1 respectively on to a glass, sapphire e or fused quartz substrate using either (a) an electron beam gun, a pressure of 2 x 10<SP>-7</SP> Torr, a substrate temperature of 380‹ C and an evaporation rate of 6-7 Š sec<SP>-1</SP> or (b) an ultra high vacuum evaporator using a pressure of 5 x 10<SP>-8</SP> - 6 x 10<SP>-7</SP> Torr, a substrate temperature of 100‹ C and a deposition rate of 10 Š sec<SP>-1</SP>, respectively.
Patent GB-1067930-A (GB)
Title: Vane operating mechanism for fluid flow machines
Inventor: PETRIE JAMES ALEXANDER
IPC: F01D17/16
Filed: 1965-12-29
Abstract: 1,067,930. Axial-flow compressors; turbines. ROLLS-ROYCE Ltd. Dec. 29, 1965, No. 55140/65. Headings F1C and F1T. The invention relates to a vane operating mechanism and is described with reference to a variable stator vane assembly of the high pressure compressor of a gas turbine jet engine of the by-pass type. The mechanism comprises a ring formed at one side thereof with gear teeth, means being provided for rotating the ring about its axis through a predetermined angular range, there being a plurality of angularly spaced apart, pivotally mounted vanes which are arranged about the axis and each of which has a radially extending spindle, rotation of which effects pivotal movement of the respective vane, each spindle being provided with gear teeth which are in mesh with the gear teeth on the ring. In the assembly shown each stator vane 21 carries spindles 22, 23 at its radially outer and inner ends respectively the spindles being mounted for rotation in the adjacent stator parts 15, 24. The spindle 23 of each vane is formed with a gear sector 26 which is in mesh with gear teeth 30 formed on a ring member 31 which is rotatable about the engine axis through a predetermined angular range. A roller 43 is carried on the spindle 23 and engages a track 40 in an annular track member 37, the inwardly directed flange 41 of the track member being acted on by an annular spring 44 of sinuous form which also bears against a flange 36 which is connected to the ring member 31. The spring 44 thus serves to maintain the gear teeth 26 and 30 in engagement. Two of the vanes 21 have levers which are acted on by rams 45 Fig. 3 (not shown), rotational movement of these two vanes producing corresponding movement of the other vanes. In a second embodiment the operating mechanism is disposed at the radially outer ends of the vanes and in this case the ring member 31 is acted on directly by the actuating rams.
Patent GB-1152289-A (GB)
Title: Low-Pressure Mercury-Vapour Discharge Lamp
IPC: H01J61/72
Filed: 1967-12-05
Abstract: 1,152,289. Fluorescent discharge lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 5 Dec., 1967 [8 Dec., 1966], No. 55227/67. Heading H1D. A low-pressure mercury vapour discharge lamp includes within the envelope a small quantity of metal which can readily form an amalgam with mercury and is provided with a starting strip on the envelope. The metal is preferably indium but may be cadmium, thorium, gallium, or zinc and maintains the pressure at 4 to 10 x 10<SP>-3</SP> mm. The lamp may be coated internally with fluorescent material and have an external starting strip. The starting strip is connected to one end cap and may be connected by a resistance to an electrode or may be earthed through a contact provided in a closed lighting device in which the lamp is mounted. The lamp has a minimum ignition voltage lower than that of known tubes using either an amalgam filling alone or a starting strip alone, and this minimum occurs at an operating temperature intermediate between the operating temperatures at the minimum ignition voltages of these known tubes.
Patent GB-1495536-A (GB)
Title: Ultrasonic detection apparatus
IPC: G01S7/03
Filed: 1974-12-23
Abstract: 1495536 Ultrasound reflectors COMMISSARIAT A L'ENERGIE ATOMIQUE 23 Dec 1974 [26 Dec 1973] 55424/74 Heading H4X A tubular part having a cylindrical surface of radius R is tested for flaws using a reflector which reflects ultrasonic waves, produced by a transducer and beamed parallel to the axis OZ of the tubular part, on to the tubular part at a constant angle of incidence such that lamb waves are launched in the surface of the tubular part. The intersections of the wave front with the cylindrical surface define a helix of uniform pitch 2#<SP>R</SP> tan# measured along the axis OZ, the angle # being the angle between the tangent to the helix and the plane at right angles to the axis OZ, the reflector having a reflecting surface which is a portion of the surface which has the equation expressed in polar co-ordinates (p, #) of axis OZ the angles α and j being related to the angles i and # by the relationships tan j = tan i cos # and cos 2α = t sin i sin #. In a modification the reflecting surface of the reflector is a portion of the surface which has the equation expressed in polar co-ordinates of axis OZ: the angle # being zero and the angle α being 45 degrees whereby the reflected beam is incident on the surface on spaced parallel circles which are transverse cross-sections of the tubular part. Fig. 6 shows a practical embodiment of a reflector M inside a tube 68 to be flaw tested and which reflects a beam of ultrasonic waves emitted by a transducer 66. Fig. 7 shows an external reflector for flaw testing a right circular cylinder 201. A common transducer may be used as emitter and receiver. Where the reflector and transducer are located inside the tubular part to be tested such part is preferably filled with a couplant liquid, e.g. water. Where the reflector and transducer are located outside the tabular part to be tested the complete assembly is preferably immersed in a couplant liquid.