baber/WOPTO huggingface dataset:
Patent GB-1280242-A (GB)
Title: Paper tray for photocopy machine
IPC: G03G15/00
Filed: 1970-07-22
Abstract: 1280242 Feeding sheets PITNEY-BOWES Inc 22 July 1970 [23 July 1969] 35541/70 Heading B8R A sheet separating and feeding apparatus, e.g. for feeding copy sheets to a corona discharge unit (86), Fig. 1 (not shown), and developer tank (92) in a copying machine, includes a pile tray 62 mounted on a support which allows the tray to tilt about an axis extending longitudinally of the sheet feed direction and about an axis transverse thereto, e.g. on a stationary fulcrum 66, means, e.g. an adjustable spring 70, being provided to tilt said tray about said transverse axis to an operative position in which the uppermost sheet of the pile engages feed roller means 76 mounted above the front portion of the tray for rotation about a fixed axis. Corner separator tabs 146 are pivoted at 144 to each side of the tray and engage and align the front of the stack, such that the topmost sheet, engaged for instance by a pair of separating rollers 76, is buckled against the tabs before flipping over and being fed between guides 80 (78) to feed rollers (82) (84). The fulcrum may be a frustospherical stud allowing the tray to pivot universally within the limitation imposed by slotted, tray side plates 128 which locate stationary studs (130), Fig. 3 (not shown), 134, the tray being laterally adjustable about these studs. The tray is covered by a lid 14 which, when opened for stack loading, frees a latch 152 which, when the tray is pivoted away from the separating rollers 76, retains it in this loading position, the corner separator tabs 146 being elevated with respect to the tray by engagement of member 148 with the guide 80 to facilitate stack loading.
Patent GB-1032363-A (GB)
Title: Improvements in or relating to the preparation of di-or tri-basic acids and derivatives thereof
Inventor: CRAWFORD RAYMOND VINCENT
IPC: B01J19/12
Filed: 1962-09-19
Abstract: Mixtures of conjugated and non-conjugated unsaturated fatty acids, esters, alcohols, amines or amides including as the predominant component free or combined mixed positional and geometrical isomers of the conjugated compounds are heated with a reactive dienophile in an amount equivalent to the conjugated diene content of the mixture, in the presence of catalytic amounts of iodine and in the absence of U.V. light.  The products are Diels-Alden adducts and dienophiles mentioned are maleic acid or anhydride, acrylonitrile, actylic acid, methyl acrylate, and acrolein and the conjugated materials may be dehydrated castor oil fatty acids, and isomerized unsaturated fatty products obtained by the catalytic isomerization of polyunsaturated oils.  Solvents and polymerization inhibitors may be used and the products may be separated by distillation or solvent extraction. Examples describe the reaction of conjugated soya fatty acids with maleic anhydrides, conjugated tall oil methyl esters with acrylic acid, conjugated soya methyl esters with methyl acrylate, dehydrated castor oil fatty acids with maleic anhydride, and alkali isomerized sunflower methyl esters with maleic anhydride.  The products may be used as plasticizers or intermediate therefor, for curing epoxy resins and for the preparation of alkyds.
Patent GB-379187-A (GB)
Title: Improvements in or relating to steam generators for locomotives or the like
IPC: F22B13/06
Filed: 1931-12-24
Abstract: 379,187. Indirectly heated steam boilers. SUPERHEATER CO., Ltd., Bush House, Aldwych, London.-(Assignees of Compagnie des Surchauffeurs Soc. Anon. ; 3, Rue la Boetie, France.) Dec. 24, 1931, No. 35668. Convention date, Jan. 22. [Class 123 (ii).] Locomotive &c. fireboxes comprising watertube walls providing a closed circuit for an intermediary fluid which conveys heat to water in a vessel 1 are formed of U or V-shapedtubes 2 having downflow and upflow legs appertaining to one wall only and connected to steam separators 4, the downflow legs being out of the path of the furnace gases and more or less shielded by the upper legs which may be arranged in the same transverse plane as the downflow legs or in a plane slightly oblique thereto. The firebox crown is formed bv V-shaped tubes 3 connecting the separators on opposite sides of the furnace and may be completed by plates 7, 8. Fluid is maintained in the closed circuit at a level at least up to the crossing point 9 of tubes 3, which is preferably not below the level of the lower part of the separators. The U tubes may be made without welds by bending a straight length of tube about its central part which is of greater internal cross-sectional area so as to avoid a reduction of area at the bend.
Patent GB-171629-A (GB)
Title: Improvements in domestic firegrates
IPC: F24B1/182
Filed: 1920-12-22
Abstract: 171,629. Russell, H. Dec. 22, 1920. Grates; ash guards; supports for articles to be heated.-A pivoted grate bottom a, operating in conjunction with a rising and falling grate front f, is formed with a forward extension b which, in the lowered position, Fig. 4, serves as a fret or ash-guard and, in the raised position, Fig. 2, as a support or fire table for pans and the like.
Patent GB-1540963-A (GB)
Title: Gas turbine shaft and bearing assembly
IPC: F16C33/66
Filed: 1977-08-26
Abstract: A turbine shaft and bearing assembly for a gas turbine is positionable as a unit in a turbine housing while providing means for lubrication of the associated bearings and means for communicating cooling fluid to the associated turbine wheel. The turbine shaft and bearing assembly which is the subject of this invention is applicable in one embodiment to a gasifier turbine housing or in another embodiment to a power turbine housing.
Patent GB-1021941-A (GB)
Title: 6-amino-5h-dibenzo[d,f] [1,3] diazepine compounds
IPC: C07D243/38
Filed: 1963-09-12
Abstract: The invention comprises 6-amino-5H-dibenzo [d,f][1,3] diazepine compounds of the formula <FORM:1021941/C2/1> and their acid addition salts, wherein A and B each represent up to two phenyl ring-attached hydrogen, fluorine, chlorine, bromine or iodine atoms or trifluoromethyl groups or alkoxy, alkyl or carbalkoxy groups each having up to 7C and wherein E is a hydroxyl-amino, morpholino, thiomorpholino, piperidino pyrrolidino, hexamethyleneimino, 4-(lower alkyl) piperazino (in which lower alkyl has up to 4C), NR1R2 or NR1(AlkY) wherein R1 is hydrogen or alkyl or cycloalkyl, each having up to 7C, R2 is alkyl, carbalkoxyalkyl, carboxyalkyl, or cycloalkyl, each having up to 7C, hydrogen, phenyl or thiazolyl, Alk is an alkylene group of up to 3C and Y is morpholino, thiomorpholino, piperidino, pyrrolidino, 4-(lower alkyl)-piperazine (in which lower alkyl has up to 4C), or NR1R1 where R1 is as defined above, and the preparation thereof either by reacting at a temperature of at least 70 DEG  C. a compound of the formula <FORM:1021941/C2/2> or an acid addition salt thereof and wherein R is a benzyl or lower alkyl group (up to 4C) and ammonia, hydroxylamine, morpholine, thiomorpholine, piperidine, pyrrolidine, hexamethyleneimine, 4 - (lower alkyl) piperazine or amines HNR1R2 or HNR1(AlkY); or (wherein E is NHR3, in which R3 is an alkyl or cycloalkyl group of up to 7C) by heating an appropriate 2,21-diaminodiphenyl derivative with a carbodiimide R3N = C = NR3 at a temperature of at least 110 DEG  C; or (wherein E is NH2) by reacting an appropriate 2,21-diaminodiphenyl with an S-benzyl or S-alkyl pseudothiourea sulphate or halide at a temperature of at least 110 DEG  C.  Compounds of Formula II are prepared by alkylating or benzylating the mercapto derivative. Diaminodiphenyls are prepared by reduction of the dinitro compounds.
Patent GB-341206-A (GB)
Title: Improvements in aircraft driving gear
IPC: B64D35/00
Filed: 1929-11-23
Abstract: 341,206. Aircraft driving-gear ; internal-combustion engines. BARBAROU, M. J. B., 28, Place St.-Ferdinand, Paris. Nov. 23, 1929, No. 35956. Convention date, May 24. [Class 4.] An engine crank case is adapted to take a casing carrying a direct drive or one enclosing an epicyclic reduction gear for a propeller shaft, a membe engaging the propeller shaft in one case, and the annulus of an epicyclic gear in the other, having fluted extensions engaging flutes on the engine shaft. The distance between the propeller and crank case is the same in both cases. The direct drive is shown in the upper part of the Figure, and the reduction gear in the lower part. A crank shaft 1 is supported in the crank case 2 by a roller bearing 3 and has a fluted extension 1a engaging either of two members 6 centred by the bearing 3. In the direct drive, the member 6 supports a ring 5 having a fluted connection 8 with a propeller shaft 7 supported at its forward end by a bearing 9 in a removable casing 10. A ring 11 is secured to the ring 5 and has passages 12 to lead lubricant to the flutes 8 from passages 14, 13 in the member 6 and crank shaft. In the indirect drive, the member 6 supports a gear ring 15 meshing with planet pinions 23 carried by a disc 22 on a propeller shaft 18. This shaft is supported at its forward end by a bearing 9a in a casing 10a and has a rear extension 18a fitting within the crank shaft. A sun pinion 16 is mounted on the propeller shaft by bearings 17 and is anchored to the casing 10a by teeth 19.
Patent GB-1235330-A (GB)
Title: Improvements in and relating to data recovery circuits
Inventor: HIBNER JOHN ALEXANDER
IPC: H04L25/03
Filed: 1968-07-29
Abstract: 1,235,330. Data storage. BURROUGHS CORP. 29 July, 1968 [4 Aug., 1967], No. 36004/68. Heading G4C. [Also in Division H3] An amplitude discriminator receiving pulses derived from a magnetic surface operates at a high or low threshold level depending on the pattern of the pulses, e.g. whether the preceding bit cell is occupied. Closely packed binary data recorded on a magnetic surface provides smaller output pulses and a lower noise level when the preceding time slot is occupied. Accordingly the threshold level of the amplitude discriminator may be lowered during a slot period preceded by an occupied slot. As described, the data is recorded on a tape, drum or disc in NRZ form in which the binary valves are represented by the polarity of magnetization or by change and no change of magnetization. The discriminator shown comprises a high level clipper 17 with separate channels 25, 27 for positive and negative signals and a similar low level clipper 18. The first positive pulse following an unoccupied slot is clipped by the high clipper 25, its peak is detected by 26 and used to set a bi-stable circuit 29. An AND gate 20 is thus opened and the output of the bi-stable circuit passes through the OR gate 42 to the utilization circuit. The OR gate output is differentiated in a pulse former 63 and starts a timer circuit 19 (designated "holdover" circuit) which closes the high level channel gates 20 and 22 and opens the low level channel gate 21 and 23. The gates are held in this state during the next time slot so that if a pulse occurs the output from the low clipper passes to the utilization circuit and to pulse former 62 which restarts the timer. The holdover circuit, if not restarted, reverts after the time slot period so that if a slot is empty the next pulse after the slot will pass to the output through the high clipper circuit. Successive pulses at the input are of opposite polarity and a noise pulse not of this polarity does not change over the bi-stable circuit and is rejected. The delay circuit may be controlled at Z 2 , Z 3  and Z 4  to provide different delays appropriate to different data repetition frequencies at different zones of a magnetic recording disc. The delay may be controlled by clock pulses and in Fig. 3 a bi-stable circuit 73 is changed over so as to switch the gates to accept the low base-clipper output and is switched back by a clock pulse at the end of the next time slot unless a gate 75 in the clock pulse input is held closed by a further bi-stable circuit 74. This circuit is restored by a previous clock pulse but returned if a signal pulse occurs during the slot. A further circuit (Fig. 5, not shown) uses, for timing, clock pulses derived from the binary data.
Patent GB-796368-A (GB)
Title: Improvements in or relating to paints, lacquers and like coating compositions
IPC: C09D5/14
Filed: 1955-12-15
Abstract: Paints, lacquers and like coating compositions comprise a mixture of benzene hexachloride and D.D.T. in non-crystalline form in the ratio of 10 parts by weight of the former and 90 parts of the latter to 50 parts of the former and 50 parts of the latter. One or more softeners, e.g. alkylesters of monobasic and polybasic organic acids, for example, phthalic acid and adipic acid, and fatty acid esters of polyvalent sugar alcohols may also be incorporated.ALSO:A composition which may be contained in paints, lacquers, waxes and like coating compositions having prolonged insecticidal activity comprises a mixture of g -benzene hydrochloride and D.D.T. in non-crystalline form in the ratio of from 10 parts by weight of the former and 90 parts of the latter to 50 parts of the former and 50 parts of the latter.  The two insecticides may be dissolved in a common solvent, e.g. cyclo hexanol, cyclohexanone, tetrahydronaphthalene, a -methyl-naphthene, liquid fatty alcohols, e.g. higher monohydric alcohols such as octanol, nonanol, decanol and dodecanol, and resin esters.  One or more softeners, e.g. alkylesters of monobasic and polybasic organic acids for example phthalic acid and adipic acid and fatty acid esters of polyvalent sugar alcohols may also be incorporated.
Patent GB-1211339-A (GB)
Title: A process for the production of artificial leather based on polyurethane foam
Inventor: SCHMITZ ANTON
IPC: C08G18/22
Filed: 1969-07-17
Abstract: 1,211,339. Polyurethane foam laminates. FARBENFABRIKEN BAYER A.G. 17 July, 1969 [22 Aug., 1968], No. 36030/69. Heading B5N. [Also in Divisions B2 and C3] In a method of producing a polyurethane foam artificial leather a foamable reaction mixture comprising (a) a reaction product containing hydroxyl groups and derived from a polyhydroxyl compound with a molecular weight of from 500 to 5000 and a polyisocyanate; (b) a polyisocyanate; (c) a polyvalent heavy metal salt; (d) an expanding agent that gives off gases under the effect of heat; and (e) a polysiloxane, is heated and the resulting foam is combined with a textile supporting material, or the foamable reaction mixture is applied to a pre-coated textile supporting material and heated. The preferred component (a) is a polyester urethane containing hydroxyl groups and is the reaction product of a polyester derived from adipic acid diethylene glycol and a triol, with a polyisocyanate obtained by reacting trimethylolpropane with tolylene diisocyanate. Other preferred components are (c) a zinccadmium salt; (d) azodicarbonamide; and (e) a silicone oil with organofunctional groups. The textile supporting material is a woven fabric, knitted fabric, or web of a natural or synthetic fibre. The textile may be pre-coated with a polyurethane. A covering layer, e.g. of a polyurethane, is applied to the foam and then further coated with a butadiene-styrene-acrylonitrile copolymer and then a finish of a solution of a cross-linkable silicone oil or acrylic or methacrylic ester copolymers or a pigmented solution of a cellulose acetobutyrate is applied. When a sheet of foam is combined with the textile support the procedure is: a separating substrate, e.g. an embossed silicone separating paper or a fabric coated with a silicone rubber, has a covering layer of a butadiene-styreneacrylonitrile copolymer applied to it, and then further coated with a polyurethane, and then coated with the foamable reaction mixture of the invention, the material is then foamed and the resultant sheet of foam is coated with a layer of polyurethane adhesive which is then applied to a knitted cotton fabric and the parting film is removed.
Patent GB-388169-A (GB)
Title: Improvements in gyroscopic apparatus
IPC: G01C19/16
Filed: 1931-12-31
Abstract: 388,169. Gyroscopic apparatus. MOSS, D. G. K., 45, Arundel Avenue, Sanderstead, Surrey. Dec. 31, 1931, No. 36074. [Class 97 (iii).] In gyroscopic apparatus, particularly turn indicators for use on aircraft, the gyro-wheel spindle, the bearing mountings therefor, and the axially directed parts of the gimbal frame are made of different metals chosen so that the freedom of the gyro wheel is unaffected by thermal expansion. In the form shown the expansion of the brass axial members 9 of the gimbal is compensated by the resultant expansion of the steel spindle 2 of the brass gyro wheel I and the bearing adjustment screws 7, made of the metal alloy known under the registered Trade Mark "Duralumin." The longitudinal members 8 are made of the same metal (or one having the same temperature coefficient), preferably aluminium, as the frame which supports the gimbal externally for rotation about the axis 11-11.
Patent GB-398175-A (GB)
Title: Process of dyeing
IPC: D06P1/66
Filed: 1931-12-31
Abstract: The fastness of dyeings on textile materials composed of cellulose, natural or regenerated, wool, silk or of mixtures thereof, is increased by treating the materials before or after the dyeing operation with a dilute aqueous solution of a heterocyclic ammonium salt in which the ammonium nitrogen atom is a member of the heterocyclic ring and carries a long-chain aliphatic residue of at least 12 carbon atoms, acyl, hydroxyalkyl and hydroxycycloalkyl groups being absent.  In examples (1) and (2) cotton yarn dyed with Chlorazol Fast Red K or Chlorazol Sky Blue FF is treated with octadecylpyridinium bromide or octadecyl-a -picolinium bromide; (3) wool is treated with octadecylpyridinium bromide and dyed with Chlorazol Fast Scarlet 4BS; (4) cotton-wool fabric is dyed with Chlorazol Black BHS, treated with octadecylpyridinium bromide and cross-dyed with Lissamine Navy Blue FK; (5) cotton-wool union is treated with octadecylpyridinium bromide and dyed with Coomassie Red PG in a neutral bath.  Cetyl and hexadecylpyridinium bromides may also be used.
Patent GB-1323594-A (GB)
Title: Process for the manufacture and apparatus for the use of shaped catalysts or acceptors
IPC: B01J35/02
Filed: 1970-07-27
Abstract: 1323594 Purifying waste gases SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 27 July 1970 [29 July 1969 29 Oct 1969] 36281/70 Heading B1L [Also in Division C1] Sulphur dioxide is removed from furnace waste gases by passing them through channels 8 in a vessel containing rows of parallel acceptor sheets 1 made up of gas permeable tiles which comprise activated alumina ceramically bound with clay, with the optional inclusion of glass or asbestos, with a coating of copper metal on the surface. The acceptors are regenerated by passing a stream of hydrocarbon gas or hydrogen over them, the exhaust gas from this being then rich in sulphur dioxide.
Patent GB-178893-A (GB)
Title: Improvements in and relating to revolution counters
IPC: G06M1/06
Filed: 1920-12-29
Abstract: 178,893. Rogers, F. H., (Tel Soc. Anon.). Dec. 29, 1920. Number and time of working of machines.- An apparatus for registering the working of machines comprises a plurality of counting- mechanisms arranged so that one or a predetermined number of counting-mechanisms is actuated at one time. An example for checking the output of two workmen on one machine is shown in Fig 1, in which a chain wheel e driven by the shaft the revolutions of which are to be counted rotates a shaft b which carries a pinion d gearing with a differential gear e to transmit the motion to a shaft f on which is fixed a broad toothed wheel g. The wheel q engages pinions on two coupling parts h, i adapted to engage similar parts on the counting-mechanisms k, k<1> respectively. The parts h, i are slidably mounted on their shafts and each is provided with a groove l in which engages a cam m mounted on an axis n manually controlled by a, lever o so as to couple one or the other counting-mechanism to the driving-wheel g.
Patent GB-1040440-A (GB)
Title: Improvements in or relating to apparatus for the detection of the characteristics oftimber and the like
Inventor: DENNE PHILIPP RAYMOND MICHAEL
IPC: G01N27/24
Filed: 1963-09-17
Abstract: 1,040,440. Transistor pulse circuits. FLIGHT REFUELLING Ltd. Oct. 28, 1964 [Sept. 17, 1963], No. 36592/63. Heading H3T. [Also in Division G1] In apparatus for detecting holes and knots in timber (see Division G1), signals from a sensing head are amplified and fed via capacitor C 5  to a pair of complementary monostable circuits. " Knot " signals of negative polarity trigger transistor T 4  whose base is biased by a master " knot " control connected to terminal 11. " Hole ' signals of positive polarity trigger transistor T 2  whose base is biased by a master " hole " control connected to terminal 10. A signal corresponding to a hole or knot greater than the respective threshold produces an output signal of negative polarity. Of a large plurality of sensing heads, each feeds its own discriminators.
Patent GB-1398707-A (GB)
Title: Reducing nitrogen oxide formation during combustion
IPC: F23C13/00
Filed: 1971-01-29
Abstract: 1398707 Gas turbine engine combustion chambers EXXON RESEARCH & ENG CO 6 April 1972 [29 Jan 1971 28 July 1971] 36708/70 and 10250/72 Heading F1L [Also in Divisions B1 and F4] A method for reducing the amount of nitrogen oxides formed in a burner flame comprises the introduction of a substrate, formed of at least one metal and/or at least one metal oxide which is substantially solid and substantially involatile at flame temperatures, into the flame in the secondary reaction zone where the rate of formation of nitric oxide increases downstream or alternatively at a point downstream of the primary reaction zone which is also at or near the hottest part of the flame or (as a further alternative) at a distance from the base of the flame lying in the range of from 10 per cent to 60 per cent of the total flame length, the substrate being so formed that the flame extends on both sides thereof. In one embodiment of the invention a grid formed of a parallelogrammatic array of mild steel wires coated with a silica-alumina refractory cement is inserted in the flame of a kerosene-burning downwardly-firing oil burner, the grid being impregnated with solutions of chromic nitrate and ferric nitrate which are fired to provide a catalytically active mixture of chromium and iron oxides. Other metals which may be used as catalysts in the substrate include Al, Ba, Ca, Co, Cu, K, Mn, Mo, Na, Nd, Ni, Pb, Pt, Sr, V, W, and Zr. These catalysts in the form of the metals themselves or oxides thereof are preferably incorporated with a heat-resisting base material of ceramic, vitreous or refractory nature which preferably includes at least one of the following elements:- chromium, magnesium, zirconium, tungsten, molybdenum, iron, nickel, cobalt, calcium - in the form of oxides, mixed oxides or carbides. Examples of such bases for the substrate include extruded filaments of asbestos with zirconia, circular quartz filaments and helical or spiral meshes, grids or networks of filaments. When an oil-burner is used which produces a cone of partly-uncombusted fuel, the gaps in the grid or network through which the cone passes are made larger than those surrounding the periphery of the cone. The invention is applicable to combustion chambers of gas turbine engines.