baber/WOPTO huggingface dataset:
Patent GB-735128-A (GB)
Title: Monoazo dyestuffs
IPC: C09B45/14
Filed: 1952-12-30
Abstract: The invention comprises monoazo dyestuffs of formula <FORM:0735128/IV (c)/1> where <FORM:0735128/IV (c)/2> is in the 6- or 7-position, R is a benzene radicle containing a carboxylic acid group and a hydroxy group in ortho position thereto, R1 is H, Me or Et, R2 is H or alkyl, R3 is alkyl, cycloalkyl, aralkyl or a benzene radicle, X is alkyl, cycloalkyl, aralkyl, a benzene radicle or <FORM:0735128/IV (c)/3> , R1 being H or alkyl and R11 H, alkyl, cycloalkyl, aralkyl or phenyl or a derivative thereof, R1 and R11 having together at most 14 carbon atoms, and Z is H or OH, when the naphthalene sulphonamide substituent is in the 6-position, and hydrogen when in the 7-position.  They are made by diazotizing and coupling an appropriately substituted amino benzene with the desired naphthalene. Preferred amines are of formula <FORM:0735128/IV (c)/4> where y is H or Me.  Specified aminobenzenes are 2 - amino - 4 - methyl -, - ethyl -, - n - propyl-, -cyclohexyl-, -benzyl-, -(411-methyl)- and (411 - chloro) - phenyl - and - phenyl - sulphonyl, -sulphonamido-, -methylsulphonamido-, -benzyl- and -cyclohexylsulphonamido-, -phenyl-and - (411 - methyl) - phenyl - sulphonamido -, -dimethyl- and -diethyl - sulphonamido-, -N-methyl- and -ethylphenylsulphonamido-, -N-methyl- and -ethyl-benzylsulphonamido-, -41-hydroxy - 1,11 - diphenylsulphonyl - 31 - carboxylic acid and 2-amino-4-methylsulphonamido-41 - hydroxy - 61 - methyl - 1,11 - diphenylsulphonyl-31-carboxylic acid.  Aminonaphthalenes specified are 2-amino-8-hydroxynaphthalene - 6 - phenylsulphonamide, 2 - methylamino - 8 - hydroxynaphthalene - 6 - ethylsulphonamide, 2 - methylamino - naphthalene - 6 - and - 7 - cyclohexylsulphonamide, 2 - methylamino - naphthalene - 6 - N - ethylphenylsulphonamide, 2 - methylaminonaphthalene - 6 - methyl- and -dimethylsulphonamide, 2-aminonaphthalene - 6 - phenyl - and - N - ethylbenzyl-sulphonamide, 2-methylaminonaphthalene-6- and -7-phenylsulphonamide and 2 - ethylaminonaphthalene - 6 - methylsulphonamide.  Coupling is effected in a weakly acid medium, optionally in the presence of an organic solvent.  The dyestuffs may be converted into their ammonium, lithium, sodium or potassium salts.  Wool is dyed in a neutral or weakly acid bath in bright yellowish red to bluish red shades changed only slightly by after - chroming.  Examples illustrate the use of certain of the above components in the preparation of dyestuffs and the use of the dyestuffs in dyeing wool with and without chroming.
Patent GB-498097-A (GB)
Title: Process for the preparation of solid compounds by the exothermic re-action of acid gases with alkaline gases
IPC: B01J12/02
Filed: 1937-11-30
Abstract: In the preparation of solid compounds in suspension in an inert liquid by the exothermic reaction of an acid gas with an alkaline gas, the liquid is employed in the form of a spray, the reaction occurring mainly at the surface of the drops of inert liquid.  The process is especially suitable for the production of ammonium carbamate by the reaction of ammonia and carbon dioxide, but can be utilized generally for the reaction of an acid gas such as carbon dioxide, sulphur dioxide, hydrogen sulphide or hydrocyanic acid with an alkaline gas such as methylamine or ammonia. Suitable inert liquids are water-immiscible liquids such as mineral or vegetable oils, and they may contain surface tension-lowering compounds such as octyl alcohol, cetyl alcohol, cyclohexanol cresols, tar oils, oleic or stearic acids, morpholine, triethanolamine, aniline or mixtures of these compounds.  The reacting gases (ammonia and carbon dioxide) may pass up a tower in countercurrent to a shower of inert liquid produced by an atomizer at the top of the tower, the liquid from the bottom of the tower being returned by a pump through an external cooler to the atomizer.  From time to time the suspension of ammonium carbamate is extracted from the cycle while fresh inert liquid is introduced.  According to another modification, the reaction is carried out in a horizontal cylinder traversed longitudinally by a shaft provided with a series of rotating blades or discs.  The reacting gases and the liquid traverse the cylinder from end to end in countercurrent.  The liquid is maintained at such a level that the blades dip lightly therein, the liquid thus being pulverized in the cylinder.  The external surface of the cylinder is sprayed with cold water, or tubes or coils can be arranged in the zone of the apparatus bathed by the liquid.  The reaction may be carried out under increased pressure. When the gases contain inert gases, the reaction may be conducted in successive chambers, the first of which is maintained at the optimum reaction temperature and the last at the lowest temperature possible.
Patent GB-1182347-A (GB)
Title: Method for the Conservation of Green Fodder, and a Refrigerating Tunnel for use in carrying out the said Method
Inventor: FEUERMANN HERBERT
IPC: A23K30/10
Filed: 1967-07-19
Abstract: 1,182,347. Tunnel freezers. H. FEUERMANN. 19 July, 1967 [21 July, 1966], No. 33107/67. Heading F4H. A refrigerating tunnel for green fodder or leaf vegetables comprises a housing 1, two endless belt conveyers 2a, 2b of grid-like form, the material to be refrigerated being conveyed through the housing between adjacent runs of the belts, and a plurality of refrigerating elements 3 which are arranged above and below the material path and have fans 4 for forcing air into contact with the material. The fan motors 5 and the return runs of the belts are imposed outside the housing. Pivotable air deflecting plates 6, which may be oscillated by cams on the belts so that the material is agitated, are provided and the material is pressed by adjustable rollers 7, which may be refrigerated, arranged at the discharge end of the housing.
Patent GB-212299-A (GB)
Title: Improvements in the springing and steering arrangements for six-wheeled motor car chassis
IPC: B62D61/10
Filed: 1922-12-05
Abstract: 212,299. Moehl, S. Dec. 5, 1922. Motor-cars.-In a six-wheeled vehicle having front and rear wheels h, k connected together for steering, and intermediate driving-wheels j, the rear axle f is connected to the rear ends of two levers d pivoted at n to the main frame, the front ends of these levers being shackled to the ends of the springs a of the intermediate wheels j. To prevent side play, the levers d are connected by diagonal rods p.
Patent GB-1358751-A (GB)
Title: Circuit arrangement for correcting television display errors
Inventor: BOEKHORST A
IPC: H04N3/233
Filed: 1971-07-15
Abstract: 1358751 Cathode-ray tube circuits; line timebase circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 15 July 1971 [18 July 1970] 33202/71 Headings H4T and H3 In a television display employing a scanning arrangement in which the line sawtooth waveform is modulated by a field frequency parabolic component to provide EAST-WEST pincushion distortion correction and in which a capacitor provides S-correction, the linearity of the scanning rate across the display tube screen is improved by modulating the S-correction component to a greater extent than the line sawtooth waveform. Fig. 1 shows the general scheme in which the line sawtooth waveform applied to the line deflection coil 1 is produced by a (transistor) switch 2 operated by line frequency pulses to supply a D.C. voltage + V1 to the circuit and the pincushion correction is effected by means of a (transistor) switch 3, also operated by line frequency pulses and which supplies a field frequency parabolic voltage of maximum amplitude + V2 to the circuit. In the latter, capacitor 4 provides the S-correction component. The specification includes an analysis in which it is shown that an increase in the field frequency parabolic modulation of the S-correction waveform may be effected by making capacitor 8 (normally of very high value) of such small value that a parabolic voltage of line frequency is produced across it this voltage being parabolically modulated at field frequency or by also making capacitor 7 (also normally of very high value) of small value and capacitor 4 infinitely large (i.e. by omitting the latter). An arrangement in which capacitors 4, 7 and 8 all have comparatively low values may also be utilized. Fig. 4 shows a more detailed arrangement in which the parabolic field frequency voltage is derived from a generator 21 the maximum value V2 in the middle of the field scan period being adjustable by potentiometer 24 and the minimum value (at the beginning and end of the field period) adjustable by potentiometer 22. A circuit 19 provides an adjustable centring voltage and by making the smoothing capacitor 20 for this voltage of low value and decoupling it by means of a resistor or choke 20<SP>1</SP>, such capacitor may also contribute to the S-correction. Coils 9 act to prevent modulation of the EHT and the focusing voltages, derived from diodes 17 and 18 respectively, by the field frequency parabolic component, circuit 15 is a modulator controlling a field frequency correction current in the line deflection coils 1<SP>1</SP>, 1<SP>11</SP> for corner colour corrections (see Specification 1,241,933) and circuit 16<SP>1</SP>, 18<SP>11</SP> provides linearity control.
Patent GB-775763-A (GB)
Title: Improvements in or relating to stereoscopic cameras
Inventor: HAY OWEN GEORGE
IPC: G03B35/00
Filed: 1953-11-30
Abstract: 775,763. Stereoscopic cameras. ROSS, Ltd. Nov. 30, 1954 [Nov. 30, 1953; Jan. 1, 1954], Nos. 33220/53 and 26/54. Classes 97(1) and 98(2) In a twin lens stereoscopic camera light from the objectives is reflected to the image planes which are disposed parallel to or inclined to the optical axis of the lenses, and focusing is performed by translation of the reflecting means. As shown, light from the objectives 1, 2 is reflected by prisms 5, 6 to the image planes 7, 8, the film passing from the spool 17 through image plane 7, over sprocket 18, and through image plane 8 to the take-up spool 19. The prisms, image planes and film feed are carried on the platform 11, and focusing is performed by translation of the platform 11 by wheel 14 through pinion 15 and rack 16. In the embodiment shown in the Figure accompanying the Provisional Specification, the image planes are inclined at an angle 2b, preferably b f-T calculated from the formula tan - = - 2 f-T where f is the focal length of the lenses and 2T their separation. The light is reflected to the image planes by mirrors which can be translated for focusing.
Patent GB-1507790-A (GB)
Title: Grain drying apparatus
IPC: F26B9/08
Filed: 1976-08-10
Abstract: 1507790 Grain drying apparatus S YAMAMOTO 10 Aug 1976 33304/76 Heading A2Q Grain drying apparatus comprises a drying chamber 1 having a perforated bottom plate 3 through which air is blown to dry the grain in the chamber, which contains a cylindrical tube 20 through which air is extracted by connection with air extract passages in the form of inverted troughs 30 each extending radially from the cylindrical tube 20 at a level lower than that to which air forced into the drying chamber can pass through the mass of grain. Grain above the troughs may be circulated through the drying chamber by means of an auger 9 and elevator 8, thus drying all of the grain in turn.
Patent GB-1110456-A (GB)
Title: Stabilization of vinyl acetate
IPC: C07C69/15
Filed: 1965-08-04
Abstract: A stabilized vinyl acetate monomer for solution polymerization to polyvinyl acetate and, if required, subsequent hydrolysis to polyvinyl alcohol, is obtained by adding at least 10 p.p.m. by wt. of dithizone, dimethylglyoxime, parabenzoquinone or paraquinone dioxime to the ester, distilling the mixture and recovering stabilized vinyl acetate as a distillate.  Polymerization may be effected in methanol or ethanol solutions using conventional catalysts. Examples 5 and 6 describe the preparation of polyvinyl acetate and polyvinyl alcohol.ALSO:Vinyl acetate is stabilized by addition of at least 10 p.p.m by wt. of dithizone, dimethyl-glyoxime, para-benzoquinone or para-quinone dioxime and subjecting the mixture to distillation to obtain stabilized vinyl acetate as a distillate.  The invention includes solutions of the stabilized vinyl acetate in methanol and ethanol.  The stabilized ester provides an improved polyvinyl acetate which may be hydrolysed to polyvinyl alcohol (see Division C3)
Patent GB-365685-A (GB)
Title: Process of treating light ashes for activating the carbon therein
IPC: C01B31/08
Filed: 1930-11-06
Abstract: Carbon contained in the light ashes formed and carried into the flue during the combustion of brown coal (lignite), ordinary coal, wood or peat is activated by heating with alkali &c. carbonates at a temperature of 1000-1050 DEG  C. in the presence, if desired, of air, water vapour, oxygen, or inert gases.  alternatively, the activation is effected without the addition of chemicals by heating to the above temperatures.  To minimize heat losses, the ashes may be activated immediately after withdrawal from the flue. After activation, the product is worked up in known manner by washing with water, then with acid and again with water, after which it is dried and ground. Specification 301,330, [Class 90, Non-metallic elements], is referred to.
Patent GB-970659-A (GB)
Title: Improvements in or relating to gaseous condensation
IPC: C07D201/16
Filed: 1961-09-18
Abstract: 970,659. Recovery of monomers from synthetic polyamides. FOSTER GRANT CO. Inc. Sept. 18, 1961 [Sept. 27, 1960], No. 33424/61. Heading B1B. Cyclic amide monomers, e.g. caprolactam, and their oligomers are recovered from synthetic linear polyamides such as nylon, by heating the polymerized material in evaporator 10 to volatilize the monomer and oligomers, and passing the vapours into a tubulor condenser 12 which is mounted over a heated conical evaporator 21, whereby additional monomer vapour is added to the condensing vapours in order to prevent the deposition of solidified oligomer in the condenser tubes 14. The system is maintained under reduced pressure by a vacuum pump connected to port 13. A film of condensate flows down over the heated conical surface 21, where part of the monomer is re-vaporized, and the unevaporated liquid passes down barometric leg 23 into tank 24. A substantial proportion of the insoluble oligomers settles at the bottom of tank 24. The supernatant liquid monomer is pumped through pipe 25 to ring-shaped passage 45, and the liquid then enters chamber 15 via one of the four tangential passageways 40-43, which are opened in succession by valves 44. The insoluble oligomers and some of the liquid monomer are periodically or continuously removed from tank 24.
Patent GB-867334-A (GB)
Title: An improved method for the production of photographic contour maps
IPC: G03F1/88
Filed: 1957-10-25
Abstract: 867,334. Producing maps photographically. MAHAN, R. 0., and TOWILL, R. M. Oct. 25, 1957, No. 33440/57. Addition to 790,146. Class 98(2) The method of the parent Specification is modified in either or both of the following ways; (a) by forming a negative of the semitransparent compilation sheet in a photographic film having a strippable emulsion so that on development the emulsion is removed in the unexposed areas corresponding to the contour lines and the emulsion remaining between the contour lines acts as a mask and may be stripped between selective contour lines to project the restituted image from the corresponding diapositive; this strippable film is thus used instead of the masked transparent positive of the parent; after projection, the unmasked area is covered, e.g. with an opaquing liquid, before the next area is stripped; (b) plotting the contours on a. sheet comprising a transparent support having an opaque coating, instead of on the compilation sheet; by scribing the contour lines with a sharp point to remove the opaque covering and forming a contact print on a transparent base of the negative so produced, a transparent positive contact print is produced which is masked and used as in the parent Specification. In the first modification, the finished strippable negative is first placed in contact with a sensitive film and exposed to give an image of the contour lines before the areas are stripped and the restituted images projected on to the sensitive film. When the two modifications are combined, a negative of the transparent contact print is formed in the strippable film, but the contours in the finished strippable negative are not first transferred to the final sensitive film. Instead, the negative and contact print are placed together in register and in contact with the sensitive film, the first area is stripped from the negative and the restituted image is projected through the combined negative and 'contact printed on to the sensitive film. U.S.A. Specification 2,492,870 also is referred to.
Patent GB-307128-A (GB)
Title: Process for the treatment of stem fibres
IPC: D01C1/04
Filed: 1927-12-14
Abstract: 307,128. Bahre, C. E. Dec. 14, 1927. Processes.-Stem fibres such as flax, hemp, or ramie, are, after threshing, whether green or dried, or after a simple fermentation, treated at the point of production by mechanical means to remove the woody and foreign substances covering the fibrous layer. The fibrous product is baled for transport and may be subsequently retted. The mechanical means employed may be mounted at the end of the threshing-machine. Reference has been directed by the Comptroller to Specification 269,389.
Patent GB-1503045-A (GB)
Title: Security drawer
IPC: G07G1/00
Filed: 1976-08-13
Abstract: 1503045 Tills TESCO STORES Ltd 13 Aug 1976 33837/76 Heading A4T A drawer for a cash till comprises at least one bank-note receiving compartment 4 and a tiltable plate 15 extending over the greater part of the compartment 4 and biased to press against the notes in the compartment 4 to prevent removal of the notes without lifting of the plate 15. The plate 15 is attached to a wire clip 10 by a folded lip 17 and a bolt 18, the clip 10 being pivotably mounted in lugs 11, 12 of a bracket 9. A spring 13 attached to a strengthening member 14 on the clip 10 urges the plate 15 downwardly to engage the notes by means of a ribbed rubber friction pad (not shown).
Patent GB-636538-A (GB)
Title: Improvements in or relating to transport and stacking loading or the like of crops and the like
IPC: A01D90/00
Filed: 1946-11-14
Abstract: 636,538. Loading and unloading vehicles : load handling apparatus. MOTT, S. F. Nov. 14, 1946, No. 33849. [Classes 78 (iii) and 78 (iv)] [Also in Group XXXII] In a trailer for use in transporting, stacking and loading crops or the like having a platform which can be raised or lowered on vertical posts on the chassis, the wheels are independently adjustable relatively to the chassis and the coupling of the trailer to the vehicle drawing it is adjustable in height so that the platform may be made level despite inequalities of the ground on which the trailer rests. Figs. 1, 2 show the application to a trailer adapted to be towed by a tractor and comprising a steel frame chassis 1 mounted on a pair of wheels 2 and supporting steel posts 12 along which a platform 14 is raised by cables 17. Each of these cables is secured to the platform at one end and' passes over a pulley 13 on an adjacent post and a guide pulley 18 to a winding drum 19 on a shaft 20 which is rotated through gearing 21 by a shaft 22 which may be connected with the power shaft of the tractor or rotated by a handle 23. A ratchet wheel in the gearing 21 co-operates with a pawl pivoted on the chassis to hold the platform in the raised position. The chassis may be raised off the springs 10 so as to rest rigidly on the axles of the wheels 2 by screwthreaded members 8 rotated so as to bear on the wheel slides 9, and thus be maintained level although the wheels may be on uneven ground. The tow bar 3 is connected by a pin 6 to a member 4 rotatably mounted on a screwed rod 5 carried in a bracket 7 fixed to the chassis of the tractor.
Patent GB-391246-A (GB)
Title: Improvements in and relating to electric drives for rotary machines
IPC: H02P5/74
Filed: 1931-12-07
Abstract: 391,246. Maintaining equal speeds of motors. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A. - (Assignees of Allgemeine Elektricitõts- Ges.; 2, Friedrich Karl-Ufer, Berlin.) Dec. 7, 1931, No. 33913. Convention date, Dec. 6, 1930. Addition to 391,239. [Class 38 (iii).] In a sectional drive according to the parent Specification, the dynamo-electric machine of the synchronized group which is mechanically driven by an auxiliary motor for inching speed, is not mechanically coupled to a driven part of the rotary machine. It may, therefore, be removed from the machine room to the basement.
Patent GB-863018-A (GB)
Title: Method of and apparatus for continuous pre-refining of molten pig-iron
IPC: C21C1/00
Filed: 1957-10-31
Abstract: 863,018. Pre-refining molten pig iron. INSTITUT DE RECHERCHES DE LA SIDERURGIE. Oct. 31, 1957 [Nov. 7, 1956], No. 33969/57. Class 72 A method of pre-refining molten pig iron comprises flowing the iron along a conduit and diffusing at least one gas in a finely divided state into the stream of metal, the gas or one of the gases having a refining action. As shown, Fig. 2, a refractory-lined trough has a bottom formed of porous bricks 10 which may be supplied with oxygen by pipes 12 from an oxygen main 17. Porous bricks may be used in the side walls of a trough, Fig 3 (not shown) at the bottom of a syphon, Fig. 5 (not shown) or in the sides of a forehearth, Fig. 6 (not shown). The gas may also be supplied to the top of the flowing metal through porous bricks suspended just below the surface, Fig. 4, or the metal may pass through a tube of porous material surrounded by a gas-tight jacket supplied with the gas, Fig. 7. One of the gases used may be a cooling agent, e.g. carbon dioxide, and solid reagents may be added to the surface of the flowing metal.
Patent GB-1105789-A (GB)
Title: Methods of cutting helical grooves in tubular resistance elements
IPC: H01C17/245
Filed: 1966-07-28
Abstract: 1,105,789. Grooving tubular articles. KANTHAL A.B. 28 July, 1966 [28 July, 1965], No. 34026/66. Heading B6J. Tubular resistance elements having one or more helical grooves therein are formed with said grooves by rolling, after extruding in tubular form and while still in a plastic condition, against a surface provided with at least one cutting edge at an angle to the direction of rolling. The article 4, of molybdenum silicide or silicon carbide, is rolled, before sintering, by engagement therewith of an upper plate, against a surface 3 carrying a cutting edge 2 so that the latter produces a helical groove 5 of pitch S. Two cutting edges may be provided, to form two grooves spaced apart by S/2.
Patent GB-1402623-A (GB)
Title: Emitter-coupled logic circuits
IPC: H03K19/086
Filed: 1972-07-21
Abstract: 1402623 Transistor switching circuits SIEMENS AG 21 July 1972 [5 Aug 1971] 34152/72 Heading H3T An emitter-coupled logic circuit T 2 , T 3  with respective collector loads R 1 , R 2  and respective emitter followers T 4 , T 5  has additional resistors R3, R 4  coupling each collector to temperature compensation means, such as a transistor T 6 . As the temperature of the circuit increases, the base-emitter voltages of transistors T 4 , T 5  decrease so raising the output potentials. However, the transistor T 6  also increases conductively as its base-emitter potential falls and draws a compensating current through resistors R 1 , R 2  via resistors R 3 , R 4  to lower the output voltage and so maintain it constant. Resistordiode network R 6 -R 8 , D 1 -D 4  provides temperature independent base bias to transistors T3, T 6  but permits the base bias or transistor T 7  to vary with temperature in a way to maintain its collector current constant. The resistordiode network may bias several ECL circuits. Preferably the resistance of either collector loads R 1 , R 2  is twice that of the emitter load R 5  of the temperature compensating means.