baber/WOPTO huggingface dataset:
Patent GB-814391-A (GB)
Title: New stilbene monoazo-dyestuffs and process for their manufacture
IPC: C09B56/04
Filed: 1955-07-22
Abstract: The invention comprises dyestuffs of formula <FORM:0814391/IV (c)/1> where R1 is a benzene residue, R2 is a naphthalene residue fused to the triazole in the 1,2-positions and R3 is an acetoacetylaminobenzene residue free from groups imparting solubility in water, the groups -NHCO-and N2 being in p-position to each other. They may be made by coupling appropriately substituted diazotized anilines with the required acetoacetylaminobenzenes.  An indirect method of diazotization is preferred.  The aniline starting derivatives are made by acylating compounds of formula <FORM:0814391/IV (c)/2> to introduce the group OC-R1-NO2 with subsequent reduction of the nitro group.  The stilbene amines are made by coupling, advantageously in an acid medium, a diazotized 4-nitro - 41 - aminostilbene - 2,21 - disulphonic acid with a naphthylamine which couples in a vicinal position to the amino group, oxidizing, e.g. with copper-tetramine solutions, the o-amino-azo-group to yield a triazole and subsequently reducing the nitro group.  Naphthylamine mono- and di-sulphonic acids are mentioned, specified being 1-naphthylamine-4 or -5-mono- and -5,7-di-sulphonic acids and 2-naphthylamine-6 and -7-mono- and -3,5, -3,6 and -5,7-di-sulphonic acids.  Specified acylating agents are 4-nitro- and 3-methyl- and -chloro-4-nitro-benzoyl chlorides.  The acetoacetylaminobenzenes advantageously contain a further substituent in the benzene ring attached to the NH group. Methyl, ethyl, methoxy ethoxy, bromine, chlorine and acetylamino substituents are specified, methoxy and ethoxy groups being preferred.  Specified coupling components are acetoacetylaminobenzene, 1-acetoacetylamino-2-and -4-methoxy-, 2-methoxy - 5 - methyl -, - 2,4 - dimethyl -, -2,5 - dimethoxy -, 2 - methoxy - and - ethoxy - 4 - chloro - and - bromo - 5 - methyl - and - 5-methoxy - 4 - acetylamino - 2 - chloro - benzenes.  The dyestuffs dye or print animal fibres such a wool, silk and leather but are especially suitable on cellulosic fibres such as cotton, linen, artificial silk and regenerated cellulose. Greenish yellow tints are obtained.  In examples illustrating the preparation of the dyes and their use in dyeing processes reactants used are chosen from those given above with the addition of 1-acetoacetylamino-2,5-dimethoxy-4-chloro-benzene. Specification 659,130 is referred to.
Patent GB-217100-A (GB)
Title: A new or improved machine for automatically folding wrappers around rectangular and other bodies
IPC: B65B11/54
Filed: 1923-08-23
Abstract: 217,100. Forgrove Machinery Co., Ltd., and Grover, F. Aug. 23, 1923. Packeting by wrapping-up.-Relates to machines for wrapping rectangular and other bodies in tin foil, and of the kind in which the bodies are fed forward by an intermittently rotated disc on to the top of a vertical plunger, which forces each body, with a wrapper, through a dilatable aperture which commences the folding operations. The articles to be wrapped are placed in recesses 16 in the rim of the intermittently rotated disc 8. Fig. 3, and are brought in turn above a plunger 31, Figs. 3 and 6, and beneath a tubular brush 36. Foil &c. is fed from a roll 26, Fig. 1, by rollers 25 and is severed by knife 28 into wrappers. Reciprocating suction tubes 34 advance each wrapper 67 into position between the plunger 31 with its superposed article 66 and the brush. The plunger than rises and carries the article and the wrapper through the brush and between grippers 49 which are momentarily opened against the action of springs 47 to receive them. The grippers are mounted to rotate about a shaft 43, Fig. 3, and are adapted to be opened at the required moments by a cam-operated wedge 51. Upon the arrival between the grippers 49 of the article partially wrapped, as shown in Fig. 6, by the passage through the brush, a folding blade 54 makes the first bottom fold. At the next position of rest, a similar blade 60 makes the second bottom fold, and the two final bottom folds are made during the next movement by the passage of the article over a suitably shaped folding plate 64. At the next position, the jaws are opened and the wrapped article falls into a delivery trough 65.
Patent GB-446251-A (GB)
Title: Improvements in or relating to method of and apparatus for navigating a movable bodythrough a region of low visibility
IPC: G02B23/12
Filed: 1934-07-20
Abstract: 446,251. Photographic apparatus for fog navigation. FOG NAVIGATING CAMERA CORPORATION, 181, Morgan Street, Jersey City, New Jersey, U.S.A.-(Assignees of Williams, F. M.) July 20, 1934, No. 21345. Void [Abridged as open to inspection under Sect. 91 of the Acts, April 26, 1935]. [Classes 97 (ii), 98 (i), and 98 (ii)] Apparatus for permitting the navigation of a moving body such as a ship or aircraft through fog or haze comprises a camera employing material sensitized for infra-red rays, and provided with means for developing and fixing the material and for viewing the developed image before fixation is complete. Provision may also be made for photographing a scale of bearings with the picture. As shown in Fig. 2, the camera 1 has a supply chamber 40, closed by a side cap, delivering film 39 through a light-trap 2 into the focal plane of the lens 32, where it is held flat between a front plate 5 and a rear plate 3 held by clips 44 and pressure springs 4. On the rear of plate 5 may be secured a glass plate 51 provided with cross-lines 43 and a scale of bearings 42, Fig. 4, From the focal plane, the film is led round rollers 10, 10<1> in a tray divided by a partition 12 into a developing part 81 and a fixing part 8<2>. The rollers are mounted on a chassis 9 accessible through a long side door, and the film is wound by an external handle engageable with a shaft 19 driving through toothed gears the lower of a pair of rollers 17 with knurled ends, which grip the film between them: A take-up roll 20 driven by spring-belt gearing from shaft 19 is also mounted on the chassis. The tray is fed with developing and fixing liquids from tanks 26, 31 through pipes 28, 281, and overflow pipes 29, 29<1> are connected to a tank 30 to receive used liquid. The base of the fixing tray 8<2> is of matt glass ; below it is a housing for lamps 15 controlled by a switch 16 ; and above it is an inclilled mirror 24 which reflects the image during fixation to a viewing aperture 23. The mirror 24 may be swung up into and held in the dotted position clear of the chassis 9 ; and carries an extension 24<1> so that it serves, in conjunction with a rubber wiper 35 fixed on the chassis 9 to prevent light from reaching the developing chamber of the camera. For use on aircraft the lens 32 is directed downwardly, and a prism reflects the image from the lens on to the focal plane. It is stated that by taking two or more photographs of an object at a known time interval, the navigator can calculate the speed and direction of the object by noting the change in position of the image of the object with respect to the bearing scale 42. Reference is made to infra-red landing lights for aerodromes, to light-houses with infra-red lenses, and to ships' searchlights with infra-red lenses for illuminating the area to be photographed. 0
Patent GB-774164-A (GB)
Title: Improvements in or relating to camping or similar collapsible tables
IPC: A47B3/02
Filed: 1955-07-25
Abstract: 774,164. Folding tables. JOHANSSON, E. A. I., and JOHANSSON, S. A. M., [trading as ORIGOVERKEN BRODERNA JOHANSSON]. July 25, 1955 [July 29, 1954], No. 21437/55. Class 52 (3). In a collapsible table having a removable folding X-form leg frame 4 engaging C-shaped brackets 3 attached to the underside of the table top 1, the limbs 6, 7 of each bracket are set apart a distance greater than the diameter of the frame cross pieces 5, while a cam 9 associated with each bracket, is pivoted to the underside of the table top to press the limbs together and grip the underframe firmly in position.
Patent GB-261127-A (GB)
Title: Improvements in variable speed gear for motor bicycles and the like
IPC: B62M25/00
Filed: 1925-08-27
Abstract: 261,127. Sturmey-Archer Gears, Ltd, and Wilkie, W. Aug. 27, 1925. Variable-speed gearing suitable for motorcycles yielding four speeds comprises four pairs of constant-mesh gears arranged upon a main driving-shaft a and a lay shaft c, the changes being effected by moving a double-ended clutch h on the shaft a and a coupled pair of clutchfaced gears k, l on the two shafts. Two gears f, g fixed to the shaft c mesh respectively with a gear d fast to a driven or main sleeve b and a gear e loose on the shaft a. A gear i fast on the other end of the shaft a meshes with a gear m loose on the shaft c. The gear k is loose on a further sleeve j which is keyed to the shaft a and carries a ring of clutch dogs j<1>. The gear l is splined on its shaft and its clutch face l<1> is adapted to engage the gear w for the first speed. The train i, m, l, c, f, d is then operative. For the second speed the coupled pair is moved to the left 'bringing the gear k into engagement with the dogs j<1>. The active train is then j, k, l, c, f. d. For the third speed, the clutch h is moved to the right to bring in the train e, g, f, d. The fourth speed, which may be the highest or the lowest, is effected by sliding the clutch h to the left into direct engagement with the driven sleeve b. Control is effected by a single fork and a yoke operated by a revoluble disc cam. The whole is enclosed in a casing.
Patent GB-998355-A (GB)
Title: Phenylalanine derivatives
IPC: C07C45/68
Filed: 1962-06-04
Abstract: The invention comprises compounds of the formula <FORM:0998355/C2/1> (wherein R1 is hydrogen or alkyl; R2 and R3\t are each C1-5 alkyl; R4 and R5 are each hydrogen or C1-6 alkanoyl; X is hydrogen, hydroxyl, alkanoyloxy, halogen, alkyl or trifluoromethyl; and n is 1 or 2, being 1 when X is hydroxyl or alkanoyloxy; with the provisos that R4O groups are not attached in both the 3- and 5-positions, and that when R4 is hydrogen, R5 is also hydrogen) and non-toxic acid-addition salts thereof; the preparation of the compounds wherein R1, R4 and R5 are hydrogen by reaction of a ketone of the formula <FORM:0998355/C2/2> with ammonium carbonate and a water soluble cyanide to form a hydantoin, decomposition of this with barium hydroxide to form the corresponding methoxyphenyl-amino-acid and demethylation of this with a hydrohalic acid, or by reaction of the said ketone with ammonium chloride and a water-soluble cyanide to form directly an a  - amino - a ,b  - dialkyl - b  - methoxy-phenyl-alanine and demethylation of this; followed, when required, by the preparation of the compounds wherein R1 is alkyl by esterification of the acids with an alkanol in the presence of an acid catalyst, and/or, when required, the preparation of the compounds wherein R4 and R5 are alkanoyl by acylation of the acids or the esters with an excess of an alkanoic acid halide or anhydride in the presence of an organic base, or, when required, the preparation of the compounds wherein R4 is acyl and R5 is hydrogen by acylation of the acids or the esters with an alkanoic acid halide or anhydride under Schotten-Baumann conditions. Examples are given.  Ketones of the second general formula above are prepared by either of the following processes (A) and (B)  <FORM:0998355/C2/3> <FORM:0998355/C2/4> The phenylalanine derivatives of the invention, or their salts, which are stated to be anti-hypertensives, may be made up into pharmaceutical compositions with suitable carriers, and, if desired, other anti-hypertensives.  Oral (e.g. tablets) and parenteral forms are mentioned.  Specification 988,002 is referred to.ALSO:Compounds of the formula <FORM:0998355/C4-C5/1> (wherein R1 is hydrogen or alkyl; R2 and R3 are each C1- 5 alkyl; R4 and R5 are each hydrogen or C1- 6 alkanoyl, X is hydrogen, hydroxyl, alkanoyloxy, halogen, alkyl or trifluoromethyl; and n is 1 or 2, being 1 when X is hydroxyl or alkanoyloxy; with the provisos that R4O groups are not attached in both the 3- and 5-positions, and that when R4 is hydrogen, R5 is also hydrogen) are anti-oxidants, and are used as stabilizers for soaps and fatty oils.
Patent GB-441982-A (GB)
Title: Improvements in or relating to variable inductance coils
IPC: H01F21/06
Filed: 1935-07-30
Abstract: 441,982. Inductances. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.- (Telefunken Ges. f³r drahtlose Telegraphie; 12, Hallesches Ufer, Berlin) July 30, 1935, No. 21637. [Class 37] A ferro-magnetically cored variable inductance coil for use in radio and similar circuits is provided with a suppfementary member of ferro-magnetic material for enabling the law of variation of inductance of the coil to be adjusted after manufacture, said supplementary member being additional to the means provided for varying the inductance of the coil when in use, and being adapted to be moved in position until the required law is obtained, its position in the assembly being then fixed. In the form shown, the inductance of the coil 1 is varied in use by moving in and out a ferro-magnetic plunger 3, and the supplementary member 4 is of elongated form and arranged with its length parallel to the direction of movement of the plunger.
Patent GB-1070229-A (GB)
Title: Apparatus for introducing web of material in rotary printing machines
Inventor: MORGENSTERN HELMUT
IPC: B41F13/03
Filed: 1965-05-24
Abstract: 1,070,229. Printing-apparatus. DRUCKMASCHINENWERKE LEIPZIG VEB. May 24, 1965, No. 21850/65. Heading B6C. Apparatus for printing a web 1 in multicolour on one or both sides comprises a plurality of printing couples having impression rollers 2-5 co-operating with printing cylinders, and a plurality of endless guide bands 7-11 arranged to guide the web between the printing couples, one end of the bands 9 and 10 being guided on eccentrically mounted rollers 16, 15 which are adjustable in position depending on which couples are operative and which sides of the web are to be printed by the said couples. The apparatus also includes eccentrically mounted friction rollers 21 which may be adjusted in position so as to drive the belts 7 and 8 from the cylinders 2 and 3 respectively.
Patent GB-710656-A (GB)
Title: Improvements in or relating to screws
IPC: F16B23/00
Filed: 1951-09-18
Abstract: 710,656. Forging-punches. NATIONAL SCREW & MANUFACTURING CO. Sept. 18, 1951 [Sept. 23, 1950], No. 21855/51. Class 83 (4). [Also in Groups XXIII and XXV] A punch to deform the central part of the slot of a screw has the form of a driver-blade 25 with a central slot 26 terminating in a spherical projection 27. The punch causes the edges of the slot, at the centre, to overhang and permit wedging the screw on a driver-blade. The punch itself may also function as a driver.
Patent GB-494370-A (GB)
Title: Improvements in or relating to the manufacture of hydrogen peroxide
IPC: C01B15/03
Filed: 1937-08-09
Abstract: Hydrogen peroxide is obtained from solutions in which this compound is formed on heating, by heating the solutions in a vessel of electrically nonconductive material and under decreased pressure by means of eddy currents generated therein by the application of high frequency electric currents.  Solutions of persulphuric acid or ammonium persulphate may be treated preferably in a thin layer, or a complex of thin layers such as is obtained by converting the solution into a mass of bubbles or by filling the apparatus with filling material such as Raschig rings &c.  Preferably, high frequency currents having a wave length below 300 metres, e.g. 2-10 or 15 metres, are employed.  The currents may be applied by mounting two metal electrodes round the apparatus, these forming the plates of a condenser, or by winding a wire carrying the high frequency currents round the tube through which the solution flows.  The vessel may be made of quartz.  A small quantity of dry steam (either superheated or not) and/or a small quantity of a heated inert gas may be injected in parallel or counter-current with the solution.  The heating by the high frequency electric currents must be sufficient to produce a hydrolysis of the solutions and, if required, the distillation of the hydrogen peroxide formed.  According to one example, a solution containing ammonium persulphate and sulphuric acid is distilled at 10-20 mm. by passage through the annular interspace between two concentric quartz tubes have copper sheets mounted against the inside of the inner tube and the outside of the outer tube by means of which a current of 100 million periods per second is applied at 1200 volts. According to another example a solution containing ammonium persulphate, ammonium sulphate and sulphuric acid is distilled at 10-20 mm. by passage through a tube filled with balls, Raschig-rings &c. and taped with copper wire, the ends of the wire being connected to a spark apparatus whereby a current of 10 million periods per second is applied at 300 volts.  Steam is also blown in. Specifications 301,929 and 301,930, [both in Class 1 (i)], are referred to.
Patent GB-1512724-A (GB)
Title: Device for bringing originals to be copied into contact with a support
IPC: G03B27/62
Filed: 1975-05-21
Abstract: 1512724 Locating originals on supports HOECHST AG 21 May 1975 [24 May 1974] 21971/75 Heading B6C A device for locating originals to be copied on a support comprises a base dividing elements forming a plurality of compartments on the base, and means for lifting originals contained in the compartments into contact with the support as it is held above the compartments. In one embodiment, Fig. 3, a frame 3 surrounds a base-plate 2 and by means of screws 5 holds a grid 4 of dividing elements so as to define a plurality of areas forming compartments on base 2. A plurality of pads 6 corresponding to the defined areas are liftable under the action of hydraulic device (11) and elevator platform (9) Figs. 1 and 2 (not shown). The intended support, e.g. a mounting sheet 12, covered with adhesive is held by vacuum on plate 7 hinged at 8 to the device. In use, an original or a stack thereof in pre-arranged order is placed in each compartment, and the pads elevated to bring the originals or topmost originals in desired registration onto support 12 hinged over the device; the process. can be repeated for subsequent originals in the stacks, e.g. in the production of layouts, for book pages. In an alternative embodiment, Fig. 4 (not shown) the dividing elements are studs (13), embedded in the base 2; some of the studs may be removably mounted in boxes (16).
Patent GB-1462185-A (GB)
Title: Probe assembly for an electrical tester
IPC: G01R1/073
Filed: 1973-05-09
Abstract: 1462185 Test probes MARCONI INSTRUMENTS Ltd 4 April 1974 [9 May 1973] 22065/73 Heading H2E A probe assembly for use at high frequencies comprises a mounting plate (not shown) for spacing a plurality of probes in a predetermined fashion, each probe 3 being slidingly mounted in a housing 2 and having a collar 6 making sliding electrical contact with a resilient bush 7 held by the housing and a thickened apertured portion 8 to which is connected a cord 10 holding the probe out of contact with a printed circuit board 5 under test. The cord 10 runs through a hollow incompressible tube 11 to an electromagnetically operated solenoid 12, and is normally held in tension by the compression spring 15. Energizing the solenoid compresses the spring and relaxes the tension, allowing the spring 9 (which is weaker than the spring 15) to urge the probe into contact with the circuit. An electrical connection is made to the outer surface of each housing 2 by soldering.
Patent GB-957425-A (GB)
Title: Improvements in or relating to washing machines
IPC: D06F37/22
Filed: 1960-06-23
Abstract: 957,425. Washing machines. SIEMENSELECTROGERATE A.G. June,23,1960 [June 24, 1959], No. 22080/60. Heading D1A. [Also in Division F4] The drum assembly of a washing machine is rigidly secured during washing and at the commencement of the spin-drying operation but is resiliently mounted when the drum speed reaches a predetermined value above the critical speed. In Fig. 1 the drum shaft 2 rotates in a bearing 3 which is supported by springs 4. While the drum is rotating at low speeds the bearing 3 is held between clamping members 5a, 5b, operated by a piston 7 and cylinder 6. Release of the clamping members may be effected automatically by a time or speed responsive control. In Fig. 2 (not to scale) the drum assembly 13,16 is supported on rubber mountings 24, the left hand one being shown in the clamping position and the right hand one in the resilient mounting position. Changeover is effected by a hydraulic cylinder 29 through linkage 30, a pre-loaded spring 31 making the changeover rapid. Automatic load balancing devices 20, 21 are provided.
Patent GB-406207-A (GB)
Title: Improvements in or relating to reversing power transmission systems
IPC: F16H3/00
Filed: 1933-08-05
Abstract: 406,207. Reversing gearing. REID, D., 132, Mortlake Road, Kew Gardens, Surrey. Aug. 5, 1933, No. 22100. [Class 80 (ii).] In a reversing gear for motor vehicles or boats, wherein one race 15 of a ball-bearing imparts a reversed drive to the other race 16 through balls 17, means are provided for applying a force to the balls in a direction tending to thrust them sideways out of the bearing to obtain a frictional grip on the racegrooves. The ball-cage 19 is simultaneously held stationary. Forward drive is through an ordinary multidisc clutch 5a arranged directly between a driving- hub 5 and a driven flangedmember 7. For reverse, the forward clutch 5a is released by moving a lever 8 which acts on the presser-plate 13 through a wedge-collar 10 and bell-crank 11. The lever 8 is also linked to an arm 30, which, through screw-and-nut means 29, contracts a brake-band 24 carrying a series of segments 20, guided radially by fixed casing-lugs 22 and having coned ends engaging the conical-ended ball-cage 19, so that the balls 17 are thrust axially against the race-grooves and the cage is simultaneously held stationary. The ensuing reversed drive is at a reduced speed due to the difference in diameter of the races 15, 16. In a modification, Figs. 5 and 6 not shown, the contracting band 24 acts only to hold the cage stationary, each ball being permanently thrust endwise by a separate helical compression spring arranged in a plugged aperture in the cage. The balls, instead of bearing directly on the cage, bear on the driving side on grooved anti-friction rollers rotatably mounted in the cage. In a further modification, Fig. 3 not shown, the races are arranged radially, similarly to a thrust-bearing, and the balls are carried in a segmental cage, which is thrust radially inwards and simultaneously braked by a contracting band.
Patent GB-224031-A (GB)
Title: Improvements relating to the manufacture of garments
IPC: A41D1/10
Filed: 1923-09-03
Abstract: 224,031. Page, A. Sept. 3, 1923. Seams.-The seams of those parts of garments which are cut on the cross are reinforced by a piece of tape C or other inextensible material which is lightly tacked along the back of the cloth, as shown in Fig. 2. The tape is subsequently sewn to the cloth and the seam opened out and pressed, as shown in Fig. 4.
Patent GB-1466453-A (GB)
Title: Circular saw blade
IPC: B23D61/04
Filed: 1974-05-17
Abstract: 1466453 Circular saws CENTRO-METALCUT AB 17 May 1974 [28 May 1973] 22182/74 Heading B5L A metal, particularly steel, cutting circular saw blade comprises teeth having a cutting face 3 with one or more chamfers 3a, 3b, a top clearance surface 4, and side clearance surfaces 1, 2 forming acute angles with the central plane of the blade when viewed on a cross-section including the axis of rotation of the blades, and lines in said side surfaces which are perpendicular to blade radii in said side surfaces are disposed parallel to said central plane. As particularly described, the blade comprises alternate high and low teeth respectively as shown in Figs. 3, 6. The teeth are of cemented carbide brazed on to a blade body 10. Each of the Fig. 3 teeth comprises a single cutting face chamber 3a and side clearance chamfers 1a, 2a, and each of the Fig. 6 teeth comprises three cutting face chamfers 3a, 3b and no side clearance chamfers.