baber/WOPTO huggingface dataset:
Patent GB-1526621-A (GB)
Title: Delignification process
IPC: D21C3/22
Filed: 1977-03-09
Abstract: 1526621 Pulp manufacture CANADIAN INDUSTRIES Ltd 9 Feb 1977 05374/77 Heading D2W A process for deliquifying lignocellulosic material comprises treating the lignocellulosic material in a closed reaction vessel with an alkaline pulping liquor containing from 0.001% to 10% by wt. based on the lignocellulosic material of a cyclic keto compound selected from naphthaquinone, anthraquinone, phenanthraquinone, the alkyl, alkoxy, and amino derivatives of said quinones, 6. 11-dioxo-lH-anthra-[l, 2-c] pyrazole, anthraquinone-1, 2-naphtha-acridone, 7, 12-dioxo-7, 12- dihydroanthra [1, 2-b] pyrazine, 1, 2-benzanthraquinone, anthrone and 10-methylene anthrone, the treatment taking place at a temperalure in the range of from 150‹C to 200‹C for 0.5 to 480 minutes and displacing the pulping liquor from the partially deliquified lignocellulosic material with water or an aqueous liquor inert thereto. The alkaline pulping liquor may be a soda, kraft, or polysulphide liquor. The deliquified material may be subjected to further treatment with alkali and oxygen. A magnesium salt e.g. MgCl 2  or MgSO 4  may be added during the further treatment stage. The deliquified material may be bleached by a conventional process.
Patent GB-1494722-A (GB)
Title: Method for charging a coke oven
IPC: C10B53/08
Filed: 1976-02-11
Abstract: 1494722 Charging coke oven batteries KOPPERS CO Inc 11 Feb 1976 [4 March 1975] 05466/76 Heading C5E A method for charging a coke oven battery comprises forming coal cakes by compressing a mixture of coal and binder, and side charging the cake, preferably after preheating, to a chamber of a coke oven battery. Preferably the binder is 2-6% by weight of hot coal tar, and the mixture is compressed at 60-70 p.c.f. to give cakes which are preheated to 150-250‹ C.
Patent GB-641424-A (GB)
Title: Improvements in or relating to a control device for the printing or like recording mechanism of weighing apparatus
IPC: G01G23/18
Filed: 1947-02-25
Abstract: 641,424. Weighing-apparatus. BERKEL AUTO SCALE CO., Ltd. Feb. 25, 1947, No. 5499. Convention date, Sept. 24, 1941. [Class 143] The printing mechanism of a weighing apparatus is driven by a spring motor wound manually and released when the weighing apparatus attains equilibrium. An abutment 28 on a spring loaded drum 29 is normally engaged by one end of a trigger lever 23, the other end of which is engaged by a projection 26 on-a lever 20, both of said levers having an anticlockwise bias. During adjustment of the weight in the scale pan, the weighbeam 1 oscillates a piston 3 in its cylinder 4 and, due to a hydraulic connection between the cylinders 4, 5 and 6, piston 7 or 8 or both will be displaced so pivoting either or both levers 11, 12 and segment arms 15, 16 about pivots 13, 14. When the weighbeam is in equilibrium the pistons 7 and 8 slowly settle under the weight of arms 11 and 17 so that the arms 15, 16 open and define a slot therebetween into which a pin 19 falls so releasing both the levers 20, 23 and the abutment 28 which allows the drum 29 to rotate and drive the printing mechanism. Abutment 28 when released strikes a member 41a which releases a pawl 41 and allows a weighted frame 42, secured to levers 20, 23 by pin and slot connections, to fall and reset the levers 20; 23 so that the abutment 28 is re-engaged by the lever 23 after one revolution. The frame 42 is re-set, so that the lever pins are at the bottoms of the slots therein, by the arm 35 of a bellcrank lever 33 which is pivoted about a pin 34 by a cam 32 fast with a shaft 31, which shaft is rotated by a handle 44 after each recording, to rewind the spring.
Patent GB-1511470-A (GB)
Title: Process of isomerizing oligomers of hexafluoropropene
IPC: C07C17/281
Filed: 1977-02-10
Abstract: 1511470 Isomerization of oligomers of hexafluoropropene CENTRAL GLASS CO Ltd 10 Feb 1977 [5 March 1976] 05552/77 Heading C2C The invention comprises a process for preparing a mixture of a dimer of Formula IIB and a trimer of Formula (IIIC) a  or (IIIC)b in which at least one dimer or trimer of hexafluoropropane of Formula (IIA) t , (IIA) c , IIIA or IIIB is heated at a temperature in the range 20- 150‹ C. in the presence of an alkali metal fluoride, a crown ether and a non-protonic polar solvent.
Patent GB-894720-A (GB)
Title: Process for the purification of dark-coloured crude fatty acid amides
IPC: C07C233/01
Filed: 1959-02-18
Abstract: Crude dark-coloured fatty acid amides of chain length of 6 to 26 carbon atoms are purified by treating the molten amides or mixtures thereof with an oxygen-yielding substance at temperatures above 100 DEG C., preferably about 20 DEG C. above the melting point of the amides or their mixtures, with stirring.  The nitrogen atom of the amides may be substituted by C1-6 alkyl or hydroxyalkyl.  Specified oxygen-yielding substances are hydrogen peroxide, performic acid, peracetic acid and metal persulphates, percarbonates and peroxides. Preferably not more than 1%-5% referred to the weight of the amide is used.
Patent GB-1149710-A (GB)
Title: Improvements in and relating to a quick release connection
IPC: F16D1/06
Filed: 1968-02-05
Abstract: 1,149,710. Mounting shear blades. E. W. BLISS CO. 5 Feb., 1968 [28 Feb., 1967], No. 5727/68. Heading B3W. [Also in Division E2] A rotary cutting machine for shearing or edge trimming metal plates and sheets comprises an arbor B attached to a cutting machine frame 8 and having a series of external key members 22 adjacent a shoulder 10 and a cutting blade C which has an internal aperture with radial apertures in which the key members 22 engage to retain the cutting blade non-rotatably on the arbor. A washer D fits over a reduced end of the arbor, and has radially extending portions which are engageable, with radial portions on the cutting blade. The washer is held non- rotatably by longitudinally extending portions 24 on the key members 22. A nut E is screwed on to the reduced end of the arbor and a stop plate 38 is bolted to the outer end of the arbor to retain the assembly on the arbor. To remove the blade C the nut E is slackened, and the washer D is moved longitudinally to disengage portion 24, the washer is then rotated to disengage the radial portions on the blade C and to align with the key members 22 on the arbor. The cutting blade is then movable over the washer and nut and off the arbor. The nut E has external notches for tightening by a wrench or it may have external gear teeth for tightening by a power tool.
Patent GB-765017-A (GB)
Title: Improved liquid level control electric switch
IPC: H01H35/34
Filed: 1955-02-25
Abstract: 765,017. Centrifugal pumps. GENERAL ELECTRIC CO. Feb. 25,1955 [Feb. 25, 1954], No. 5739/55. Class 110 (1). [Also in Group XXXVII] An arrangement for controlling a motor 1 driving by means of a vertical shaft a pump impeller 13, in dependence upon the liquid level in a sump in which the unit may be placed, comprises, Figs. 1, 2, a diaphragm 39 forming an enclosure 52 with a cover 23 which seals an opening 21 in the side wall of the motor casing part 9. The enclosure 52 is connected to the pump enclosure 19 by a passage 29 in an outer flange 28 of the cover 23 and by an opening 16 in the impeller casing 10. A central boss 42 on the diaphragm 39 slidably extends through an opening 32 in a member 31 which retains the diaphragm on a circumferential flange 30 of the cover 23, the boss 42 being opposite the operating button 38 of a switch 34 fixed to the member 31. A member 46 screwed in the boss 42 slidably extends through an opening 49 in the cover 23 and is biased outwardly by a leaf-spring 51 stressed between the screw-head 50 and the cover. Liquid enters the enclosure 19 through an inlet 12 and passes into the enclosure 52, a predetermined liquid level, adjustable by the screw 46, exerting sufficient pressure on the diaphragm 39 to move the latter against the bias of spring 51 and close the switch to start the motor 1. The liquid is expelled through outlet 14 and the pump also drives liquid into the enclosure 52 whereby pressure is maintained on the diaphragm to keep the switch 34 closed until the liquid level falls below the impeller 13. The pump may also be started irrespective of the liquid level by manual depression of the screw-head 50. In a modification, Fig. 4, in which an hermetic seal is provided between the cover opening 49 and the screw 46, the latter is biased by a coil spring 53 surrounded by a thin flexible tubular member 54 having inturned end flanges 55 abutted by the spring.
Patent GB-176011-A (GB)
Title: Clover grating and cleaning apparatus
IPC: A01F11/04
Filed: 1922-02-27
Abstract: 176,011. Cegielski Tow. Akc., H. Feb. 25, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Thrashing-machines; hulling, husking, and decorticating.-An apparatus for thrashing, " grating," sifting, and cleaning clover, and also for separating barley grains, shelling wheat, and similarly treating Corn and seeds, consists of a " grating-drum " c, a shaking and sifting apparatus f, and a sifting-frame l, with blowers k, n. The clover is fed by a hopper a and a delivery roller b to a " grating-drum " c with beating-laths d which throws it against a " grating basket " e. The grated clover falls upon the shaking-frame f, inclined at 15‹ to 20‹, which is shaken by a crank g. The clover falls through removable sieves f<1> - - f<4> and on to a lower dust sieve f<5>, and thence to an elevator h, which carries it to the upper sifting-frame l, whence it passes, through the receiving-box o, into sacks. The frames f, l are connected by rods m. The blowers are regulated bv valves i, and in the sieye frame " in which the second purification is effected " throttle valves are fitted to retain the clover seeds.
Patent GB-537890-A (GB)
Title: Improvements in detachable grips for use more especially on tractor wheels
IPC: B60B15/00
Filed: 1940-04-02
Abstract: 537,890. Wheel tyres. ADAMS, E. R. April 2, 1940, No. 5879. [Class 144 (ii)] A detachable tread band, particularly for use on tractor wheels, comprises a series of gripperunits each formed by transverse plates, the units being spaced circumferentially of the wheel and secured to the wheel-rim by flexible connectors attached to the ends of the units. As shown, each unit A comprises pairs of fabric-reinforced rubber plates B clamped between metal plates C by U-bolts G. The two members of each unit are clamped on a tubular bush D by nuts E and spaced by a sleeve F. The units are secured to the wheel rim M by bolts K passed through pairs of crossed chains J, J<SP>1</SP> connected to the bolts G. As shown in Fig. 5, a pair of such bands may be fitted to a rim with the units in staggered relation.
Patent GB-286268-A (GB)
Title: Improvements in electrical switches
IPC: H01H5/06
Filed: 1928-02-25
Abstract: 286,268. Welsh, J. T. March 2, 1927. [Convention date]. Switches, quick-action; actuating; contacts.- The movable contact 3 is carried by an arm 14 that is pivoted at 16 to a lever 4 which is pivoted in notches 26 in a bracket 5 comprising stamped plates 24. The lever 4 comprises a pair of stamped plates which are positioned by the pin 16 and a lever 12 forming with the lever 4 a toggle device. The contact arm 14 is connected by a dead-centre spring 11 with arms 48 forming parts of a two-plate lever 43, which is pivoted at one end and carries a roller 9 engaging a cam 7 whereby the switch is operated. The arm 14 is connected by a lead 22 to a block 27 which carries guides 37 for the leads and also serves as a support for the plates 24. When it is desired to open the circuit, the cam 7 is rotated, as by a handle, in a counter-clockwise direction whereby the rollers 9 and lever 43 are lifted and the arms 48 projected between the plates of the lever 4 so as to cause the spring to cross the dead-centre and rapidly open the switch. A similar action takes place in the reverse direction, and a pair of ends 47 impart a hammer action to the lever 4 in case of failure of the spring. The spring also causes a rolling action of contact 3 on its fixed contact.
Patent GB-285926-A (GB)
Title: Protecting device for use on coal cutting machines
IPC: E21C35/04
Filed: 1928-02-25
Abstract: 285,926. Demag Akt.-Ges. Feb. 26, 1927, [Convention date]. Coal - cutting machines.-A coal - cutting machine is provided with means to ensure that the clutches controlling the cutter-drive and the high-speed transport mechanism cannot be engaged simultaneously. As shown, a sliding rod 1, controlling the cutter drive 2, passes through a rotating handle 4, which, through an. eccentric, operates a fork 7 controlling the clutch 8 of the high-speed transport mechanism. A stud 3 on the rod 1 co-operates with a longitudinal groove 6 and an annular groove 5 in the handle 4 to hold either clutch out of engagement when the other is engaged.
Patent GB-1221921-A (GB)
Title: Improvements in or relating to computers and sights for dive bombing airplanes
Inventor: BRUNET MAURICE ANDRE
IPC: G06G5/00
Filed: 1955-03-01
Abstract: 1,221,921. Bomb sights. M. A. BRUNET. 1 March, 1955 [1 March, 1954], No. 5979/55. Heading F3C. In a dive bombing computer carried in an aircraft an indicator informs the pilot of the correct moment for the release of the bomb. In the first embodiment, the indication is given by the momentary operation of an indicating device while in a second embodiment the sights are continuously varied so that upon changing the aircraft attitude to effect alignment of the sights and the target the bomb may be released. The computer automatically measures the dynamic and static air pressures, during flight, by means of pitot heads and the craft pitch angle is derived from a gyro-vertical. Prior to take-off the craft, correction factors corresponding to ground air pressure and the type of bomb are set into the computer. At the target area the value of wind speed is allowed for. The pressures at the pitot heads and the manual adjustments thereto are applied to capsules, the mechanical displacement of which produce shaft rotations. Similarly, electric signals from the gyro pitch detector produce servomotor rotations. In the first embodiment the shaft rotations are applied to rotate a cam, shaped to correspond with predetermined aerodynamic characteristics of the craft and bomb, and simultaneously rotate a cam follower arm, into contact with it, to complete a circuit to energize the indicator. In the second embodiment the cam and follower are permanently in contact and the follower motion is used to continuously position the sighting device.
Patent GB-1424582-A (GB)
Title: Handling building tiles
IPC: B66C1/46
Filed: 1973-02-07
Abstract: 1424582 Lifting devices 600 MACHINERY AUTRALIA PTY Ltd 7 Feb 1973 [8 Feb 1972] 6020/73 Heading B8H Two adjacent sets of stacks 1 of building tiles are lifted and moved by means of gripping means, Fig. 1, which is suspended at a bore 12 from a boom mounted on the bed of a truck (not shown), the gripping means consisting of a pair of outer arms for engagement with the outer sides of the sets and an inner arm to which an inflatable bag 14 is attached, the bag in use of the gripping means being disposed between the sets 1 as shown such that when inflated it causes the sets 1 to be gripped between itself and the pair of outer arms respectively, operation of the boom causing the gripping means to be lifted on to the truck bed. The inner face of each of the outer arms has a sheet 13 of rubber material bonded thereto thus providing a resiliently deformable surface for engaging with the side of the appropriate set of tiles. The inflatable bag 14 is attached to two angle brackets 27 which are bolted to corresponding mounting lugs 28, and the bag 14 may be divided into three bag sections by means of a pair of dividing straps (21), Fig. 4 (not shown), for engagement with the three stacks 1 of tiles in each set, and each such bag section can be individually supplied with compressed air through nozzles (20). An inner inflatable bag (19) may be provided between the two sheets (15) forming the bag 14, Fig. 6 (not shown), the bag (19) being provided as a safety measure in the event of the bag 14 being inadvertently deflated. A cover sheet 29 is provided to protect the bag 14 against abrasion and wear.
Patent GB-1378174-A (GB)
Title: Electro-magnetic relay a-rangement
IPC: H01H51/02
Filed: 1971-03-05
Abstract: 1378174 Electromagnetic relays JOSEPH LUCAS (INDUSTRIES) Ltd 18 Feb 1972 [5 March 1971] 6209/71 Heading H1N A pair of electromagnetic relays on a common base 10 each have pivoted armatures with aligned pivotal axes and means for biasing the armatures comprising a common member 23 which engages both armatures, extends parallel to the pivotal axes and is engaged by a pair of spaced springs 26, 27 extending transversely to the member 23 to engage the base 10. The member 23 has downturned ends 23a, 23b extending through holes in armature portions 21, 22 and crimped portions 24, 25 which lie in the plane of the axes of the ends 23a, 23b. The crimped portions allow adjustment of the positions of the spring ends on the member 23 to alter the armature bias of adjacent relays without any great influence on the operational characteristics of the other relay.
Patent GB-1028423-A (GB)
Title: A method of enabling dehumidification of masonry or brickwork
IPC: E04B1/70
Filed: 1963-02-15
Abstract: 1,028,423. Building appliances. C. MEISELKNONE. Feb. 15, 1953 [Feb. 19, 1962], No. 6267/63. Heading E1S In order that masonry or brickwork may be dried electrodes consisting wholly or partly of carbonaceous material are embedded in the masonry during its erection so that an electric current can be passed between them. The carbonaceous material may be compressed carbon or graphite. The electrodes may consist wholly of carbonaceous material, or may consist of a metallic conductor containing a core of carbonaceous material or of a metallic. conductor having a surrounding cavity of carbonaceous material.
Patent GB-1169271-A (GB)
Title: Electroslag refining of metals
Inventor: CRAIK ROBERT LAIDLAW
IPC: C22B9/18
Filed: 1967-02-09
Abstract: 1,169,271. Casting processes. BRITISH IRON & STEEL RESEARCH ASSOCIATION. 9 May, 1968 [9 Feb., 1967], No. 6297/67. Heading B3F. [Also in Division H5] In an electroslag refining process, powdered slag 14 is melted by passing an electric current through one or more resistance element(s) 15, placed between and in contact with a consumable electrode 13 and the bottom wall 10 (and/or side walls 11) of the mould. The resistance elements are preferably graphite, but other materials may be used, provided that they melt at or above the fusion temperature of the slag and, if molten, the quality of the slag or ingot in production is not affected by them. The resistance elements are preferably finned to facilitate heat conduction to the slag (which is packed in the remaining voids in the mould). Cylindrical, helical, cage-like and bar-shaped elements may be used. Handles attached to the elements are used to remove them from the molten slag. However, if the elements are of low density they will float to the slag surface. Alternatively (see Fig. 4), the resistance element(s) 15 may be removably attached to the electrode 13 and removal from the slag is effected by raising the electrode.
Patent GB-153827-A (GB)
Title: New process of manufacture of ª dialkylamino-ethylamino benzoic alkyl esters
Filed: 1920-03-02
Abstract: b -Dialkylaminoethyl-p-aminobenzoic alkyl esters are prepared by the reaction of b -chlorethyldialkylamines on p-aminobenzoic alkyl esters.  Examples are given of the preparation of b -diethylaminoethyl-p-aminobenzoic methyl, ethyl, propyl, butyl, isobutyl, and isoamyl esters, and of b -dimethylaminoethyl-p-aminobenzoic butyl ester. Butyl-p-aminobenzoate employed in the above reaction is prepared by esterification of p-aminobenzoic acid with butyl alcohol, or by esterifying p-nitrobenzoic acid with butyl alcohol and reducing the product.  Isoamyl-p-aminobenzoate is prepared by esterification of p-aminobenzoic acid with isoamyl alcohol.
Patent GB-765151-A (GB)
Title: Improvements relating to gaseous electron discharge tubes
IPC: H01J17/26
Filed: 1955-03-03
Abstract: 765,151. Automatic pressure control systems. BRITISH THOMSON-HOUSTON CO., Ltd. March 3, 1955 [March 5, 1954], No. 6339/55. Class 38 (4). [Also in Group XL (a)] The gas pressure in a tube such as a hydrogen thyratron is kept constant by a pressureregulating device consisting of a replenisher 6 which liberates gas on heating, and, in series with its heater 7, a member 1 having a negative temperature-resistance coefficient, such as a thermistor. The whole device is connected across the cathode heater supply. If the hydrogen pressure in the thyratron falls, less heat is conducted away from the thermistor, so that its temperature rises, and its resistance consequently falls. Thus the voltage drop across the replenisher heater 7 increases, and some gas is released. If the hydrogen pressure increases, the reverse cycle of effects occurs.
Patent GB-556097-A (GB)
Title: Improvements relating to bomb and like carriers for aircraft
IPC: B64D1/06
Filed: 1942-05-13
Abstract: 556,097. Bomb-dropping &c. ROE & CO., Ltd., A. V., and BEARDSHALL, G. May 13, 1942, No. 6499. [Class 9 (ii)] To enable a plurality of smaller bombs or other articles to be carried in place of one hook-supported heavy bomb, containers r, r for the bombs or articles are suspended from a sub-frame, provided with steadying means for the containers, which is itself steadied in the aircraft and suspended from the usual bomb hook. The sub-frame, shown in end elevation, comprises a central girder a from which three pairs of cantilever arms extend laterally, one pair such as b, b at each end, and a central pair carrying hooks for supporting the containers. The arms are interconnected by tubular members e and the end arms have screw abutments k by which the suspenoeo containers are steadied against rigid abutments g on the sub-frame a. Other abutments i on the sub-frame steady the latter against abutments on the aircraft when the sub-frame is drawn up and suspended from the bomb hook; Specification 543,009 is referred to.
Patent GB-1246035-A (GB)
Title: Copolymeric aromatic ethers and thioethers
IPC: C08G75/23
Filed: 1969-02-06
Abstract: 1,246,035. Copolymeric aromatic ethers and thioethers. INVENTA A.G. FUR FORSCHUNG UND PATENTVERWERTUNG. 6 Feb., 1969 [29 Feb., 1968], No. 6536/69. Heading C3R. Copolymers are prepared by reacting a total of 0À9 to 1À1 molar proportion of the alkali metal salts of at least one aromatic dithiol of formula and at least one aromatic diphenol of formula where X is with one molar proportion of an aromatic dihalogen compound of formula where Hal is halogen and Y is an electronattracting group, e.g. sulphonyl, disulphonyl, keto, diketo, azo, vinylene, alkyl phosphinoxide and perfluoroethylene, in a polar aprotic solvent at elevated temperature and in the absence of oxygen. Alternating copolymers are obtained by mixing the starting materials and then polycondensing; block copolymers are obtained by precondensing the dithiolsalt with dihalogen compound and the diphenol salt with dihalogen compound, mixing the precondensates and completing the polymerization; and random copolymers are obtained by adding a solution of the salts to a solution of the dihalogen compound over the course of 2 to 8 hours at 140-160 C. In the examples the disodium salts of Bisphenol A and 4,4<SP>1</SP>-disulphydryldiphenyl ether, are reacted with 4,4<SP>1</SP>- dichlorodiphenyl sulphone and the disodium salts of 4,4<SP>1</SP>-dihydroxydiphenyl sulphide and 4,4<SP>1</SP>.disulphydryldiphenyl methane are reacted with 4,4<SP>1</SP>-dichlorobenzophenone; the solvent is dimethylsulphoxide. Other materials are mentioned.