baber/WOPTO huggingface dataset:
Patent GB-1066022-A (GB)
Title: Optical antiflash device
IPC: G02B5/24
Filed: 1962-12-05
Abstract: 1,066,022. Detecting explosions photoelectrically. UNITED STATES ATOMIC ENERGY COMMISSION. Dec. 5, 1962 [March 8, 1962], No. 46007/62. Heading G1A. [Also in Division G2] .  An optical shutter comprises a pair of spaced apart light-transmitting means, further means for maintaining the light-transmitting means in such relationship and forming therewith a normally light-transmitting chamber, an opaquing medium operatively associated with the chamber, and means for effecting dispersal of the opaquing medium throughout the chamber. The shutter is adapted to become opaque within about 200 microseconds of initiation and may be incorporated in goggles to protect personnel against the flash of an atomic bomb or may be used as a fast shutter for a camera. In one embodiment, Fig. 2, two rectangular transparent plastic plates 11 and 12 are clamped to a spacer 13 extending round three sides of the plates and to a member 19 extending along the fourth side, thus forming an airtight chamber 15 which may or may not be evacuated. The member 19 is provided with a groove extending substantially along its length and forming a reservoir containing an opaquing material 16 and an explosive charge 17. The opaquing material may be a colloidal suspension of graphite in an isopropyl alcohol or normal hexyl alcohol carrier. In operation a signal indicating an intense flash may be derived from a solid state photo-electric device and used to detonate the explosive which projects the opaquing material through the barrier 27 into the chamber 15.
Patent GB-1447245-A (GB)
Title: Xylose isomerase
IPC: C13K11/00
Filed: 1973-10-02
Abstract: 1447245 Xylose isomerase CPC INTERNATIONAL Inc 2 Oct 1973 [2 Oct 1972] 46081/73 Heading C3H A xylose isomerase (dextrese or glucose isomerase) preparation comprises the enzyme sorbed on particulate, e.g. granular, basic magnesium carbonate. The basic magnesium carbonate may be used to isolate the enzyme from a broth of Stregtomyces olivochromogenes cells containing it. Alternatively, the sorption complex may be formed and used in situ as by passing a cell-free aqueous solution of the enzyme and also a source of dextrose, e.g. corn starch hydrolysate, through one or more columns containing the basic magnesium carbonate (pH 7À5-9À5). Alkali may be fed to the columns to regulate the pH of the isomerization solution. In comparative experiments disclosed, the sorption of the enzyme upon barium, calcium and zinc carbonates, also alumina, is compared in terms of enzymatic activity with that for the basic magnesium carbonate.
Patent GB-1013721-A (GB)
Title: Improved transducing apparatus
IPC: G11B15/61
Filed: 1963-11-21
Abstract: 1,013,721. Mounting recording heads. AMPEX CORPORATION. Nov. 21, 1963 [Dec. 18, 1962], No. 46084/63. Heading G5R. In order to maintain a recording head in its correct position despite variations in the coefficient of friction between the head and the recording medium, the head (e.g. 21, Fig. 1) is mounted on an element 73 which extends in the plane in which the recording medium 16 is moving in the zone of engagement. As described, the element 73 is a leaf spring, stressed sufficiently to hold the head in contact with tape 16 as it passes around capstan 47. Adjustable compression springs 91 may be provided to increase the pressure between the head and the tape. In all, four heads 21 . . . 24 are provided the abutting faces 77, 78 of their supports being machined to ensure an accurate fit. The supports 77, Fig. 3, are mounted on a base-plate 12, and are positioned by means of a ring 79 engaging with a groove 82. In order to disengage the heads from the tape, a ring 64 is movably mounted in base-plate 12 and engages with a post 66 provided for each head unit. Rotation of the ring by means of a solenoid mounted beneath plate 12, Fig. 2 (not shown) causes posts 66 to move along cam faces 87, thus retracting the head from engagement with the tape.
Patent GB-1111260-A (GB)
Title: Process and apparatus for producing glass
IPC: C03B5/16
Filed: 1966-10-18
Abstract: <PICT:1111260/C1/1> In the production of molten glass, glass making ingredients are fed on to a liquid support other than molten glass and having a density greater than the glass-making ingredients, heat is applied thereto to melt the ingredients and the resultant molten glass supported on the liquid.  Molten tin is the preferred liquid but molten gold or silver may be used.  Batch materials are fed in a thin layer on to a bath 102 of molten tin from hopper 106 by a screw 108 and pusher 110 and the batch melted as by heaters 116 and refined and conditioned by heaters 118 and 120.  A ribbon 121 of molten glass is formed and this may be discharged to a further molten tin-bath 124 for levelling and smoothing or may be discharged to rollers (20, Fig. 1) for sizing, in each case the sheet glass passing to an annealing lehr.  Before use, the apparatus is purged with nitrogen and then forming gas introduced.
Patent GB-1268195-A (GB)
Title: Pyridine derivatives and their manufacture
Inventor: BOWDEN R D
IPC: C07D213/32
Filed: 1968-12-20
Abstract: 1,268,195. Substituted pyridines. IMPERIAL CHEMICAL INDUSTRIES Ltd. 3 March, 1969 [20 Dec., 1968; 2 Jan., 1969], Nos. 46737/71 and 46738/71. Divided out of 1,268,191. Heading C2C. Substituted pyridines are obtained by reacting a substituted pyridine wherein the substituent has the formula -CH 2 (R), -CH(R)(R 1 ), -CH(R)(R 2 ), -CH(R)(R 9 ) or -CH(R)(R 10 ) wherein R is H, halogen, alkoxy or amino, R 1  and R 2  are each a group of formula wherein X is O or S, n is 0, 1 or 2, m is 1 or 2 and R 3  and R 4  are each H, alkyl, alkenyl, aryl, aralkyl, alkaryl or cycloaliphatic groups, R 9  is a group of the formula -CH 2 CN, -CH 2 CON(R 5 )(R 6 ) or -CH 2 CH 2 N(R 7 )(R 8 ) wherein R 5 , R 6 , R 7  and R 8  are each H, alkyl, alkenyl, aryl, aralkyl alkaryl or cycloaliphatic groups and R 10  is a group as defined for R 1 , R 2  or R 9 ; with a metal amide or an organolithium compound and an alkylene oxide, sulphide or imine or an organic compound DHal wherein Hal is a halogen atom and D is a group R 1 , R 2 , R 9  or R 10  corresponding to the group to be introduced into the substituted pyridine. The invention also comprises the substituted pyridines in which the substituent has the formula -C(R)(R 1 )(R 2 ) or -C(R)(R 9 )(R 10 ). Examples are given for the production of the compounds. They are useful as intermediates in the production of bipyridyls. Pyridyl-alkane diols, dithiols or diamines used as starting materials are themselves obtained by reacting an alkyl pyridine with a metal amide or an organolithium compound and with an alkylene oxide, sulphide or imine respectively.
Patent GB-1187256-A (GB)
Title: Non-woven Fabrics
Inventor: FORD JOHN
IPC: D04H5/02
Filed: 1967-10-13
Abstract: 1,187,256. Endless felts. SCAPA DRYERS Ltd. 2 Oct., 1968 [13 Oct., 1967], No. 46785/67. Heading D1R. A method of producing a non-woven endless felt comprises feeding a warp of yarns extending in the longitudinal direction of the felt, and a non-woven felt comprising a web needled to a warp, to a needling loom and needling the felt into a preselected length of warp, the length being the circumferential length of the desired endless felt, reintroducing the leading end of the needled fabric into the loom over or under the trailing warp to produce a further layer or layers of warp on the felt, and severing the trailing warp when the required strength is achieved, the method being characterised in that the warp yarns of the non-woven felt are inclined relative to the longitudinally extending warp and extend substantially from edge-to-edge of the longitudinal warp, and also in that the length of the applied non-woven, felt is substantially equal to the circumferential length of the endless felt. The warp yarns of the non-woven felt preferably extend at 45‹ to the longitudinally extending warp. The longitudinally extending warp may be incorporated in a non-woven felt comprising a web needled to a warp. In a preferred embodiment the density of warp yarns in the non-woven felt is less than the density of warp yarns in the longitudinally extending warp. One or more additional webs may be needled onto the endless felt.
Patent GB-1282036-A (GB)
Title: Method and apparatus for measuring the proportional elongation of metal strips
Inventor: KUBO MORITADA
IPC: G01B17/08
Filed: 1969-09-26
Abstract: 1282036 Electrical measuring devices TOKYO SHIBAURA ELECTRIC CO Ltd 26 Sept 1969 [30 Sept 1968 4 Oct 1968] 47497/69 Heading G1N [Also in Division H4] The proportional elongation of a rolled metal strip over a predetermined length L (=(m-1) fix) is measured by disposing a plurality (m) of spaced (by #x) detectors 4 along a line x<SP>1</SP> parallel to the direction of movement of, and adjacent but not in contact with, the strip to produce first signals E L1 ,... E Lm  representing the distance between respective detectors and portions of the strip surface opposing said detectors, producing second signals #E 1 , ... #E  m-1  correspondingto the difference between the first signals from pairs of adjacent detectors, squaring the second signals and adding the squared signals to produce a third signal E  n  representing the proportional elongation of the strip over the predetermined distance L. As shown, the strip is magnetic and the detectors 4 are electromagnets, the outputs of the respective detecting circuits 8 1 , ... 8 m  being applied to non-linear circuits 9 1 , ... 9 m  to linearize the outputs of the detectors. The signal E  n  may be applied to the crown roll of the mill producing the strip to improve the flatness of the strip. A number of parallel rows of detectors may be provided across the width of the strip. The method may alternatively incorporate the use of ultrasonic detectors (see Division H4).
Patent GB-1362779-A (GB)
Title: Image reproducing mechanism
IPC: B41B21/16
Filed: 1970-10-07
Abstract: 1362779 Photo-composing machines LAMSON PARAGON Ltd 6 Oct 1971 [7 Oct 1970] 47589/70 Heading G2A [Also in Division B6] The apparatus described is similar to that of Specification 1362778 but the claims relate to the system comprising light source, projection means and a framework carrying a plurality of image-forming means, wherein the latter is driven to select which of the image-forming means is to be reproduced, the correct operation of switches associated therewith ensuring that the correct part will be reproduced.
Patent GB-1482569-A (GB)
Title: Carburettors for pre-combustion chamber internal combustion engines
IPC: F02M1/14
Filed: 1974-11-06
Abstract: 1482569 Spray carburetters HONDA GIKEN KOGYO KK 6 Nov 1974 [7 Nov 1973]  48046/74 Heading F1H The choke valve 20 of a carburetter 16 in an assembly 14 for supplying a mixture to a main combustion chamber 4 and a richer mixture to a pre-combustion chamber 6 is fully opened by a device 44 when the engine is operating. The valve 20 is biased closed by a spring 48 and opened by a diaphragm 46 subject to the suction downstream of the throttle valve 22. The choke valve 19 of the main carburetter 15 of the assembly may be controlled by a bi-metal strip 28, heated by an electric heater, and a suction responsive device 33 or by a manually operated cable (66), Fig. 2 (not shown). In the latter case the valves 19 and 20 have a lost-motion connection (68 and 69), so that the valve 19 may be fully opened without opening the valve 20. The valve 20 is biased closed by a spring and the device 44 has a lostmotion connection (45, 70) to the valve.
Patent GB-1439793-A (GB)
Title: Method of and demulsifier mixtures for breaking crude petroleum  emulsions
IPC: C10G33/04
Filed: 1973-10-16
Abstract: 1439793 Polyether polyether-polysiloxane demulsifier compositions for wet petroleum TH GOLDSCHMIDT AG 16 Oct 1973 [18 Oct 1972] 48221/73 Heading C3R [Also in Divisions B1 and C5] A demulsifier composition for breaking waterin-oil crude petroleum emulsions comprises (a) 0À2-30 wt. per cent of a polyoxyalkylene-polysiloxane block copolymer, wherein each polyoxyalkylene block is of molecular weight 500- 4000 and contains oxyethylene and oxypropylene units in the weight ratio 40 : 60 to 100 : 0, and each siloxane block contains 3-50 Si atoms, and (b) 70-99À8 wt. per cent of a silicon-free polyoxyalkylene demulsifier which is I, an adduct of ethylene and/or propylene oxide on to an alkylphenol-aldehyde resin or II, a block or random copolymer of oxyethylene and oxypropylene units, or III a reaction product of either of these with a dicarboxylic acid or of II or a mixture of I or II with a crosslinking agent, or IV is mixture of any of these. In the examples water is broken out of crude petroleum using as (b) a polyoxyethylenated then polyoxypropylenated nonylphenol-aldehyde resin or a polyoxyethylenated polypropylene glycol and/or a mixture of these cross-linked with toluene diisocyanate, and as (a) a block copolymer of 10 blocks of 4 Me 2 SiO units and 11 polyoxyethylene-oxypropylene blocks.
Patent GB-1102978-A (GB)
Title: Heat-insulating compositions
Inventor: WASHBOURNE COLIN
IPC: B22D7/10
Filed: 1964-11-27
Abstract: A heat-insulating slab or sleeve for use in lining mould heads &c. in the casting of molten metal, comprises (percentages by weight):-70 to 90% particulate refractory material, 3 to 15% clay (preferably fireclay or ball clay), up to 15% fibrous refractory material, and 0.5 to 2% phosphoric acid.  The particulate refractory is sand, silica flour, grog, alumina, or chamotte, and the fibrous refractory is asbestos, slag wool, glass or metal.  A resin binder comprising up to 10% b.w. of the total, may be included, e.g. phenol- or urea-formaldehyde, or furane resin. Conventional moulding processes are employed.
Patent GB-1146757-A (GB)
Title: Process for selective hydrogenation of butadiene-(1,3) in a hydrocarbon mixture containing a large amount of butene-(1) and small amounts of butadiene-(1,3)
IPC: C07C5/03
Filed: 1966-10-28
Abstract: 1,146,757. Selective hydrogenation. CHEMISCHE WERKE HULS A.G. 28 Oct., 1966 [29 Oct., 1965], No. 48421/66. Heading C5E. Hydrocarbon mixtures containing large amounts of butene-1 and small amounts of butadiene-1,3 are selectively hydrogenated to remove butadiene by contact with hydrogen in the presence of a supported copper/nickel catalyst having a metal content of 2-60 wt. per cent and a copper/nickel weight ratio of from 10 : 1 to 1:1. Suitable supports are silica gel, pumice, kaolin, alumina and magnesia, and the catalyst may contain modifiers, e.g. chromium, chromium oxide, magnesium or an alkali metal phosphate.
Patent GB-1478729-A (GB)
Title: Carbon-carbon coupling process
IPC: C07D309/38
Filed: 1975-12-03
Abstract: 1478729 Catalytic coupling MONSANTO CO 3 Dec 1975 [4 Dec 1974] 49600/75 Heading C2C A process for the catalytic coupling of an allylic group with a functionally-substituted olefinic group, there being at least one H attached to the non-functionally-substituted carbon atom of the double bond of the said olefinic group, comprises contacting a compound containing the allylic group and a compound containing the substituted olefinic group or a compound containing both the allylic and the substituted olefinic group with a catalyst system comprising a Group VIII metal, Br and/ or I, and a Group VA element (e.g. P). In examples, allyl alcohol is reacted with methyl acrylate to give methyl sorbate with or without allyl sorbate, methyl 5-allyloxyl-2-hexenoate and/or allyl 5-allyloxy-2-hexenoate; and allyl acrylate is reacted to give sorbolactone which is hydrolysed to sorbic acid. The process is also stated to be able to produce sorbic acid, methyl 2,5-hexadienoate, 5-methyl-2,4-hexadienenitrile and 5-hydroxyhexenoic acid.
Patent GB-1192949-A (GB)
Title: Improvements in or relating to Pneumatic Servo-Assisted Devices
IPC: F15B9/10
Filed: 1967-11-01
Abstract: 1,192,949. Clutch control; servo-assisted hydraulic devices. ALFRED TEVES G.m.b.H. 1 Nov., 1967 [7 Jan., 1967], No. 49653/67. Headings F2F and F2L. A servo-assisted clutch control mechanism comprises a servo-piston 6 carrying a valve element 10 which abuts a master cylinder piston 4 and normally connects chambers 1, 13 on either side of the piston 6 through ducts 14 . . . 17, a pedal operated control sleeve 9 and an exhaust valve 11. Depression of a clutch pedal 8 moves the control sleeve 9 left into engagement with a rubber ring 28 of the valve element 10 to block flow of compressed air from the chamber 13 to the chamber 1. Simultaneously a projection 19 of the valve element 10 opens the valve 11 to exhaust the chamber 1 through ducts 16, 17, 15, 38, 29, 23. The pressure in the chamber 13 thus moves the piston 6 and master cylinder piston 4 left to disengage the clutch. On release of the pedal 8 a spring 36 moves the control sleeve 9 away from the ring 28 whereupon the exhaust valve 11 is closed and the chambers 1, 13 reconnected to equalize the pressures on opposite sides of the piston 6 and permit a spring 35 to return the piston 6 and master cylinder piston 4 to the clutch release position shown. The compressed air is supplied to the chamber 13 from an accumulator (not shown).
Patent GB-1120731-A (GB)
Title: Improvements in or relating to row-crop cultivators
IPC: A01B39/06
Filed: 1963-12-18
Abstract: 1,120,731. Agricultural implements. G. M. BYRD and G. J. BYRD. 15 Feb., 1965 [18 Dec., 1963, No. 49976/63. Heading A1B. A row crop cultivator adapted to be attached to the three-point linkage of a tractor, comprises a main frame including two L-plates whose vertical limbs are interconnected and whose horizontal limbs support at least two transverse parallel tool bars, each bar being formed to carry a number of soil working implements mounted for adjustment to any desired position along the bar. As shown, the L-shaped plates 2 are interconnected by hollow tubular members 4, 5 and support tool bars 14 on which are clamped spring metal tines 16. One or more extension brackets may be attached to a tool bar to extend horizontally therefrom, the/each bracket being adapted to support a further tine. The plates 2 each carry two inwardly directed pins (8) arranged one above and one below the level of the adjacent tool bar and forming alternative connection points for the two lower links of the tractor. The third attachment point for the linkage is provided by one of three pairs of aligned holes 10-12, in plates 6 carried by the transverse members 4, 5. A chassis unit for a drag harrow may be attached to the cultivator. The cultivator may be used to lift onions the tines being arranged in setts of three, the front and rear tines of each set being placed close to the onion row and the central tine being in the row.
Patent GB-1369434-A (GB)
Title: Thrust reverser for a gas turbine jet propulsion engine
IPC: F02K1/72
Filed: 1971-10-20
Abstract: 1369434 Thrust reverser DEFENCE SECRETARY OF STATE FOR 20 Oct 1971 [21 Oct 1970] 49987/70 Heading B7G A thrust reverser for a gas turbine jet propulsion engine 10 comprises a casing 11 provided with apertures 24, means movable between forward propulsion and reverse thrust positions for closing the apertures, at least one thrust reverser member 15 of substantially aerofoil shape having at least one surface provided with sound absorbing cavities 23 and pivotable between forward propulsion and reverse thrust positions, and power-operated means for moving the means for closing and the thrust reverser members. The power operated means is an hydraulic system, Fig. 3 (not shown), in which the means for closing, namely an axially movable sleeve 31, is moved by a ram (45) and the members 15 by a rack and pinion device (52) actuated by a ram (53). The members 15 are pivoted adjacent their centres of gravity on shafts 16 on radial struts 14 which also support an inner casing 12 and carry either a fixed annular vane 32 or an annular array of fixed vanes, whose surfaces form a continuation of those of the members 15 in the forward propulsion position and are provided with sound absorbing cavities 36. The casings 11, 12 may define the fan duct 13 of a ducted fan engine. (For Figures see next page.)
Patent GB-1380568-A (GB)
Title: Gaseous fuel control device and burner system
IPC: F23N5/10
Filed: 1971-12-14
Abstract: 1380568 Burner controllers ROBERTSHAW CONTROLS CO 14 Dec 1971 [15 Dec 1970] 50004/73 Divided out of 1380567 Heading F4T A fuel control device for a dual flow rate burner, particularly of the type forming the subject matter of Specification 1,380,567, has only a single fuel inlet 12, Fig. 6, and a single fuel outlet 14, means operative to provide fuel flow to the outlet selectively at two predetermined flow rates corresponding to the two rates of the burner which produces two different flame configurations, a flame sensor T for sensing both flame configurations, and a safety shut-off valve 18 responsive to the flame sensor so as to be maintained open as long as any flame emanates from the burner. The valve 18 has a holding solenoid 24 energized by thermocouple T but of insufficient power to open this valve. A manual control knob 48 has an OFF position, a PILOT position, and an ON position, a button 32 being depressable only in the PILOT position to open valve 18 and simultaneously close a valve 38 to block a main fuel flow path, an auxiliary fuel flow passing via a by-pass passage 74 to outlet 14. After ignition of the auxiliary flow, valve 18 remains open, unless the flame goes out, and knob 48 is turned to the ON position whereat the main fuel flow passes via valves 18, 22 and 36, 38 into and through a plug valve 42, rotated by knob 48, and thence to outlet 14 via a thermostatic valve 52, Fig. 1, the auxiliary flow continuing via passage 74 and a variable restrictor 75. The flow via passage 74 may or may not be controlled by an exterior flow channel in plug valve 42. The thermostatic valve 52 comprises a spring biased member 56 having a seat 54 and actuated by a snap-acting mechanism 64 responsive to a rod-in-tube thermostat 68 with a temperature selector 72 so that with the valve 52 closed or open the burner operates at a standby or main rate respectively.
Patent GB-1311988-A (GB)
Title: Character recognition system
IPC: G06V30/10
Filed: 1970-10-22
Abstract: 1311988 Character recognition INTERNATIONAL BUSINESS MACHINES CORP 22 Oct 1970 [14 Nov 1969] 50100/70 Heading G4R A character recognition system comprises means for providing characteridentifyingsignals representative of a recognized character, and means controlled by a signal indicating that the recognition was valid for providing signals representative of the position of the recognized character on a document, the identifying signals and position signals being transmitted sequentially. Scanning of the document (i.e. field selection) is controlled by a control word from a CPU channel. If a recognition unit fed from the scanner recognises a valid character, the scanner beam horizontal position voltage is saved in a track hold circuit and converted into a position byte by an A-to-D converter. The recognition unit provides a character byte representing the character identity. A "channel ready" signal from the CPU channel starts a ring clock to gate the character byte to the CPU channel, followed (if the control word indicated that the position was required) by the position byte, over a common bus. The invention can be applied to the systems of Specifications 1,2181,267 and 1,281,268 (referred to) and is useful in reading shoe order forms.
Patent GB-1146518-A (GB)
Title: Improved device for separating bundles of predetermined size from a stack of fine hair, bristles or the like fibres
IPC: A46D1/08
Filed: 1966-11-09
Abstract: 1,146,518. Brush-making machines. SPOJENE KARTACOVNY NARODNI PODNIK. 9 Nov., 1966 [19 Nov., 1965], No. 50119/66. Heading A4K. A reciprocable picker bar 4, intended for use with a fine hair or bristle, has two notches 5, 6, each effective to withdraw bundles of bristles on its adjoining side 2 or 3 of the magazine. The bundles are lifted out of the notches 5, 6 by pairs of synchronously driven discs 12, 13, and deposited on a moving conveyer belt 16. Stripper plates 7 and 8 have bevelled edges 9 and 10.