baber/WOPTO huggingface dataset:
Patent GB-541146-A (GB)
Title: Manufacture of dyestuffs and intermediates therefor
IPC: C09B49/12
Filed: 1940-05-13
Abstract: 541,146. Dyes ; intermediates. HADDOCK, N. H., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. May 13, 1940. No. 8547. [Classes 2 (iii) and 15 (ii)] Sulphur dyestuffs are prepared in substance or upon the fibre by re-acting a diazotized tetra-amino, tri-amino or di-amino phthalocyanine of the benzene series in which all the amino groups are diazotized with an alkyl xanthate or an alkali metal thiocyanate, hydrolyzing the resulting phthalocyanine xanthate ester or thiocyanophthalocyanine and oxidizing the so-obtained mercaptophthalocyanine. The dyestuffs when applied to cellulosic material from a sodium sulphide bath yield green dyeings fast to washing, chemick and light which are discharged by steaming after treatment with dimethylsulphobenzylphenylammonium chloride, sodium hydroxide and sodium formaldehyde sulphoxylate. For the production of the dyestuffs on the fibre, the phthalocyanine xanthate ester or thiocyanophthalocyanine intermediate is applied dissolved in sodium sulphide solution to the fibre, hydrolysis to the mercaptan and then oxidation taking place on the fibre. In examples : (1) copper tetra-(3 or 4)-aminophthalocyanine aqueous paste is diazotized, re-acted with potassium ethylxanthate and hydrolysed by boiling with caustic soda; acetic acid is added to the solution of sodium salt of copper tetramercaptophthalocyanine so obtained and the resulting precipitate oxidized by drying in air ; (2) copper tetra-(4)-thiocyanophthalocyanine, prepared from diazotized copper tetra-(4)-aminophthalocyanine and sodium thiocyanate is (a) suspended in alcoholic sodium sulphide solution, hydrolysed by boiling and oxidized by means of a stream of air and (b) boiled with water, sodium sulphide and sodium carbonate to give a dyebath in which wetted out bleached cotton yarn is immersed with addition of sodium chloride ; the cotton yarn is dyed bright green on drying in the air ; (3) a sulphur dyestuff dyeing shades more yellow than those obtained in the previous example is prepared from nickel tetra-(4)- aminophthalocyanine by the same process but using ammonium thiocyanate. Further examples describe the production of sulphur dyestuffs by the same methods from copper tri-(4)-aminophthalocyanine and copper di-(4)- aminophthalocyanine. The latter is prepared by heating 4-nitrophthalimide, phthalimide, urea, anhydrous cupric chloride, ammonium molybdate, boric acid and α-chlornaphthalene and reducing the resulting copper di-(4)-nitrophthalocyanine with sodium hydrogensulphide. Specification 529,847 is referred to.
Patent GB-379305-A (GB)
Title: Wireless system
IPC: H04B14/08
Filed: 1931-03-20
Abstract: 379,305. Wireless signalling. BRUNI, R., 36, Via XX Settembre, Genoa, Italy. March 20, 1931, No. 8583. Convention date, March 20, 1930. [Class 40 (v).] In a wireless signalling system of the kind in which the carrier wave is modulated by audio-frequency-modulated currents of intermediate frequency while at the receiver a local oscillator is provided between the first and second stages of detection, the local frequency beats with the auxiliary frequency while disturbances produce beats of different frequency which are not passed on to the next stage. Fig. 13 shows the transmitting arrangement in which currents from the microphone 1 are amplified at 6 and modulate the intermediate frequency generated by the valve 27 through the coil 12, which varies the constants of the tuned circuit 21, 19<1>. The carrier current generated by valve 28 is modulated by the resultant current in the anode circuit of valve 27 by choke modulation at 13<1>. At the receiver, Fig. 14, the input is applied to a first detector comprising two valves 511, 51<11>, in parallel, their anode circuits being arranged in pushpull in order to balance out disturbing currents. Local oscillations from valve 59 are injected into the circuit by coupling coil 58 to the circuit 68, 69, the frequencies being so chosen that the signal beat frequency differs considerably from that due to disturbing currents. The beat frequency is transferred to the second detector 72 from circuit 56, 57. High frequency amplifiers may be provided before the first detector stage 51<1>, 51<11> and intermediate frequency amplifiers between the two detection stages ; also the local frequency may be obtained by a second grid in the valve 51<1>, Fig. 15 (not shown). The valves 51<1>, 51<11>, may be,combined in one envelope and a second grid may also be added to the valve 51<11> to obtain symmetry, Figs. 16, 17, and 18 (not shown). Specifications 143,583, 158,200, 219,998, 314,092, [all in Class 40 (v), Wireless signalling &c.], and 341,832 are referred to.
Patent GB-550256-A (GB)
Title: An improved apparatus for dispensing beverages
IPC: B67D3/00
Filed: 1941-07-08
Abstract: 550,256. Dispensing beverages. BARTLETT & SON (METAL WORKERS), Ltd., G. F. E., and WALLIS, B. H. July 8, 1941. No. 8615. [Class 108 (i)] A trolley 1 for dispensing beverages supports one or more tea urns &c. 6 on a plinth 5 resting on the flat top, so that a recess 8 is formed extending under the urn to receive one or more cups 9 under the tap 7. The trolley may have a series of shelves supporting a number of trays 3.
Patent GB-538503-A (GB)
Title: Improvements in and relating to nut members
IPC: F16B37/02
Filed: 1940-05-14
Abstract: 538,503. Nuts. UNITED-CARR FASTENER CORPORATION. May 14, 1940, No. 8637. Convention date, May 31, 1939. [Class 89 (i)] A nut comprises a flexible sheet metal base 6 with a pair of substantially rigid tongues 8 normally forming an opening 11 smaller than the maximum bolt diameter, the base being sprung into the arched position shown in Fig. 9 to enlarge the opening so that the tongues pass over the bolt without substantially altering the angle H between the tongues and the adjacent part of the base. When the bolt is tightened the base is flattened, Fig. 10, and the tongues locked firmly against the bolt threads. In one form the base may have relatively narrow flexible parts 7, Fig. 2. One of the modified forms of base is shown in Fig. 7.
Patent GB-1004497-A (GB)
Title: Improvements in electrical connectors
Inventor: TEURLINGS LUCAS GERARDUS CHRIS
IPC: H01R31/02
Filed: 1963-03-05
Abstract: 1,004,497. Two-part couplings. AMP Inc. Feb. 18, 1964 [March 5, 1963], No. 8665/63. Heading H2E. An electrical connector comprises resilient sockets or receptacles 1, 2 and 3 bent up from a flat plate, arranged side-by-side to receive respective cylindrical plug members, and formed integrally with a tab receptacle 6. The sides opposite the open apices are formed at the inner ends with dimples 5 which locate in recesses in the plug members. Other forms of receptacles are described.
Patent GB-1533617-A (GB)
Title: Playback system including a signal pickup device return mechanism
IPC: G11B3/36
Filed: 1976-03-04
Abstract: 1533617 Return mechanisms for paralleltracking disc record pickups RCA CORPORATION 4 March 1976 [10 March 1976] 08667/76 Heading G5R A parallel-tracking disc record pickup 15 contained in a housing 17 which is driven radially on bearings 22, 23 by a motor 26 is returned to its starting position on opening lid 11 of the unit, by means of an extensible cord 28 secured between the lid 11 and the base 10, a clamp 39 fixed to the cord 28 engaging a leaf spring 37 on the housing 17 as the cord 28 extends. As shown, the pickup and its drive and return mechanism are contained in the lid 11; a similar arrangement is used if the pickup &c. is on the base 10, Fig. 4 (not shown). The motor 26 drives the housing 17 radially inwards during playback by a rack 24 and pinion 25 to a final position in which leaf spring 37 abuts the clamp 39. The cord 28 comprises a wire 30 passing through a slot 38 in the spring 37 and over pulleys 35, 36, and a spring 29 which extends as the lid 11 is opened to push the spring 37 and housing 17 back to their outermost rest position, as defined by a stop 40 on the lid 11. As described, the disc contains video signals which the pickup senses by capacitive variations.
Patent GB-169412-A (GB)
Title: Improvements in line spacing mechanism for typewriting machines
IPC: B41J19/84
Filed: 1921-03-21
Abstract: 169,412. Rogers, T. W., (Leidenroth, G.). March 21, 1921. Line-spacing mechanism. - In line-spacing mechanism for platen-shift machines, the shift frame is protected against shock, by mounting the space-adjusting stop on the carriage; the mechanism may be arranged to permit ready detachment of the platen. The platen shaft a<1> is mounted in open bearings B which form part of the platen frame and can slide in vertical slots c<1> in the carriage C. The line-spacing lever R, pivoted on the carriage, engages a slide J which is slotted to engage guide studs K, M on the carriage. The stud M is formed with three stops, two stops m<4>, m<5> being shown, at different distances from the axis, and can be turned to bring any of these stops into the path of a lug i<3> on the slide. The stud is retained by a spring-pressed ball N engaging depressions m<2> in a disc m<1> on the stud. A pawl D, co-operating with a ratchetwheel A on the platen shaft, is pivoted on a slide D' arranged beneath the platen shaft. The slide D<1> is slotted to engage studs b<2>, b<3> on the bearing B, and is provided with a pin d<5> engaging the forked end of a lever F which is pivoted at the middle on the bearing and carries a roller H engaging a lug i<1> on the slide K. A returning- spring E is connected to the slide D<1>. The platen can be readily removed without being obstructed by the line-spacing mechanism.
Patent GB-809961-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B19/00
Filed: 1956-03-21
Abstract: 809,961. Sewing machines. NECCHI, S. P. A., [formerly VITTORIO NECCHI. S. P. A]. March 21, 1956 [May 26, 1955], No. 8875/56. Class 112 Button-hole stitching. In a zig-zag sewing machine the adjustments of the amplitude and centre line of the zig-zag and the direction of feed to produce the buttonhole stitching shown in Fig. 14 are produced by manual operation of a single control lever. The control arrangement is carried by a plate 46, Fig. 10 mounted in the machine arm, and comprises a lever 69 on a pivot pin 71 carrying a block 65 with three sets of cam surfaces 66, 67, 68 engaging levers 48, 49, 50 arranged on a pivot pin 47 and coupled to the various adjusting machanisms. The control lever has three positions corresponding respectively to forward displaced stitching A, central stitching B and D at rest, and reversed displaced stitching C. Movement of the lever 74 to the position shown in dotted lines disengages the levers 48, 49, 50 from the block 65 to allow it to be removed. The machine can then be oprated as a normal zig-zag machine.
Patent GB-628037-A (GB)
Title: Improved method of and apparatus for applying a covering to balls, particularly tennis balls
IPC: B29C63/00
Filed: 1946-03-22
Abstract: 628,037. Tennis &c. balls. ROBERTS, F. T. March 22, 1946, No. 8984. Convention date, May 3, 1945. [Class 132 (ii)] A fabric cover is applied to a tennis ball by reducing the pressure in a closed spherical chamber in which the ball with the cover about it, and partly fixed thereto, is placed. Two 8-shaped cover sections A and the ball B are coated with air-curing cement, the ball having an excess of vulcanizing agent, and the covers preliminarily attached along equatorial zones X Y to the ball by hand or in the apparatus described in Specification 628,103. The covering operation is completed in the apparatus shown which comprises two plates 10 with hemispherical mould cavities 11 and each covered by a sheet 16 of flexible non- porous material which, on exhaustion of the air through the conduits 12, 14, forms seatings to receive a number of balls. The apparatus having been closed, the air between the sheets 16 is exhausted through the conduit 20, clamped in grooves 13 between the plates 10 the pressure inside the ball causing it to expand and press against the covers. If desired compressed air may be pumped in through the conduits 12, 14 to further press the covers against the ball. The cover may fit the ball or may leave a groove between its edges into which a strip of material is cemented. The Specification as open to inspection under Sect. 91 includes the subject-matter of Specification 628,103 and also describes the insertion of a strip of material having a concave outer surface in the groove between the edges of the cover parts. This subject-matter does not appear in the Specification as accepted.
Patent GB-416938-A (GB)
Title: Improvements in or relating to the manufacture of cellulose nitrate
IPC: C08B5/10
Filed: 1933-03-25
Abstract: The viscosity of cellulose nitrate for use in the lacquer and pyroxylin plastics industries, and particularly cellulose nitrate having a nitrogen content below 12,5 per cent, is reduced by treating the ester in the undissolved state with a pyridine or quinoline base, and the product of reduced viscosity is rendered highly stable by a further treatment with an aldehyde or formic acid, preferably preceded, accompanied, or succeeded by treatment with dilute acid, for example, a diluted mixture of nitric and sulphuric acid. Aldehydes which may be employed are formaldehyde, acetaldehyde, benzaldehyde, or polymers such as paraformaldehyde or paraldehyde which function as aldehydes in the presence of dilute acids.  An aqueous solution of a water-soluble aldehyde such as formaldehyde is preferably employed.  After the treatment with aldehyde, the ester is preferably washed with hot water.  The ester may also be washed with water before the aldehyde treatment. The product may also be bleached, if desired, with any of the usual agents such as hypochlorite.  The cellulose nitrate may be stabilized either before or simultaneously with the pyridine treatment by any method such as a dilute acid boil.  Examples are given, in which the boiling \ba1/2\be per cent aqueous solution of formaldehyde is employed for removing the pyridine base. According to one example, a mixture of pyridine bases such as is used for denaturing alcohol is used as a viscosity reducing agent.  The Specification as open to inspection under Sect. 91 refers specially to the use of picolines, collidines, and lutidines as viscosity reducing agents.  This subject-matter does not appear in the Specification as accepted.
Patent GB-388942-A (GB)
Title: An advertising device for opening sealed theatre programmes, and the like
IPC: G09F23/10
Filed: 1932-03-30
Abstract: 388,942. Programmes &c. JONES, S. H., 79, Semley Road, Norbury, London. March 30, 1932, No. 9091. [Class 146 (ii).] A device for opening a sealed theatre programme or the like consists of a comparatively stiff card formed with an orifice so that when the card is inserted between the leaves of the programme the usual seal may be passed through the orifice and broken on the withdrawal of the card. The card may be circular in shape, bear advertisements and instructions for breaking the seal, and may have a narrow slit connecting the orifice with the outer edge of the card to facilitate positioning when the programme has already been sealed. The shape of the orifice may be that of an isosceles triangle with the apex pointing towards the centre of the card.
Patent GB-814976-A (GB)
Title: Improvements in and relating to radio aerials
IPC: H01Q15/14
Filed: 1956-03-23
Abstract: 814,976. Moulding radio reflectors. CLEMENTS, H. J. March 25, 1957 [March 23, 1956], No. 9091/56. Class 87(2). [Also in Group XL(c)] A radio reflector is formed by covering the face of a shaped lattice of metal or other material with a plastic layer and then coating the outer face of the layer with metal. In one method of applying the plastic layer to the lattice the latter 10, 11 is inverted and supported by a structure 20. A sheet 21 of flexible material such as rubber extends over the top of a box 22 beneath the lattice and on top of the rubber is laid the layer 13 of plastic in a mouldable condition. Pressure inside the box is raised to press the layer against the lattice and maintained until the plastic is curved and attached to the lattice. The layer may be of woven glass cloth impregnated with a polyester resin or asbestos felt and a phenolic or epoxy resin. In a modified constructional method a grid of close mesh wire is covered with a material to prevent adhesion and placed over the plastic layer before pressure is applied. After the layer has been formed to the required shape the grid is removed and the formed layer bonded to the lattice.
Patent GB-586266-A (GB)
Title: Improvements in or relating to ionisation chambers, geiger-mueller tubes and the like
IPC: H01J47/08
Filed: 1945-04-12
Abstract: 586,266. Electron discharge apparatus. GRAVES, A., DAWES, T. J., and ALLTOOLS, Ltd. April 12, 1945, Nos. 9166 and 30461. [Class 39 (i)] An ionisation, chamber of the Geiger-M³ller counter type has an envelope 10 with a pinch 20 through which are sealed supports for a cylindrical cathode 15 whose length is not appreciably greater than its diameter and a coaxial wire anode 18. The cathode is of copper with an internal surface film of copper oxide or copper hydride, is supported by a contact strip 22 of nickel or molybdenum, and may have an aperture 23 opposite the window 14 which is of soap bubble thickness and is sealed in position as in Specification 559,181. The anode 18 is of tungsten and is spot welded to the wires 19 and 20, the upper parts of which are enclosed in tubular upward extensions 21 of the pinch. The filling is a mixture of an inert gas, e.g. argon and about 10 per cent dry air, or alcohol or acetone to act as a " quencher " at a pressure of from 3 to 9 centimetres of mercury.
Patent GB-136993-A (GB)
Title: Improvements in Fasteners for Bottles, Jars, Boxes, Packets and like Articles.
Inventor: GUTTENBERG WILLIAM
IPC: B65D55/06
Filed: 1919-04-11
Abstract: 136,993. Guttenberg, W. April 11, 1919. Seals.-Relates to fastening-means comprising a band or tongue having teeth thereon adapted to engage with and become locked by teeth in a loop at the opposite end of the band, the construction of the tongue and loop being such that the tongue does not protrude through the loop. According to this invention, the exposed portion of the loop is weakened by a series of slits, Surreptitious opening is thus avoided. Fig. 1 shows a fastener for envelopes, b indicating teeth on the tongue a, which is passed into a locking-loop c having a non-exposed exit end f. The weakening-slits are shown at e. Fig. 6 shows a similar arrangement for fastening hinged boxes. Figs. 3 and 4 show a capsule, b<1> indicating ratchet teeth on the end of the band m which engage corresponding teeth on the inside of the loop c at the other end of the band. A tongue n is cut out of the material to form a means for enabling the tongue a to be pushed home by the use of pliers. The invention may also be employed in connexion with the fastening of jars, tins, packets, &c.
Patent GB-782595-A (GB)
Title: Improvements in or relating to water heaters
IPC: F24H1/10
Filed: 1955-03-30
Abstract: 782,595. Heating water by direct contact with hot gases. RIGHTON, W. J.. and RIGHTON, J. R. H. March 8, 1956 [March 30, 1955; April 12, 1955], Nos. 9332/55 and 10550/55. Class 64(1) In a water heater with a gas or other burner 15, water flows down an assemblage of upwardly extending apertured metal sheets 23, 24 spaced a small distance apart, and the apertures in the sheets are so formed that the water tends to flow from the outer surface of the assemblage into the small space between the sheets, so as to make intimate contact with hot gases flowing through the apertures. In the form shown there are two sheets of expanded aluminium bent into cylinders, the metal around the apertures sloping downwardly towards the space between the sheets. Water is sprayed from an annular pipe 32 on to a domed or conical cap 37 supported by the assemblage, and against the upper cover plate 31. The apertured cylinders are carried by an annular trough 17 of vitreous enamelled steel, and at the top are spaced from the aluminium lining 27 by radial ribs 33 on a ring 34.
Patent GB-419061-A (GB)
Title: Improvements in or relating to mechanism for carrying or releasing loads from aircraft
IPC: B64D1/04
Filed: 1933-03-29
Abstract: 419,061. Bomb-dropping apparatus. THOMSON, A. A. B., Air Ministry, Kingsway, and COOKE, G. H., 28, Dahneny Avenue, Tufnell Park, both in London. March 29, 1933, No. 9392. [Class 9 (ii).] A bomb-dropping device comprises a lever 9, Fig. 4, adapted for example by means of a hook 91 to support a bomb B, and provided with a roller 12 bearing against a comparatively thin member 20 slidable between this roller and a roller 13 on the frame of the apparatus sufficiently close to the roller 12 to prevent tilting or bending of the member 20 while allowing room for the lever 9 to swing to release the bomb when the member 20 is pulled to release the roller 12 through a slot or beyond the end of the member 20. The end of the lever 9 supporting the bomb may be shielded to prevent accidental release, and the shield may be fixed or in the form of a pivoted spring controlled gate 15 which allows the insertion of the bomb ring on the lever and then returns against a stop 15<1>. Several such devices may be arranged to be operated by a single mechanism to release the same bomb at two points of support or several bombs simultaneously or in succession. As shown in Fig. 1, each longitudinal member 2 of a frame can carry adjustable crutches 4, 41 for holding a bomb supported by a device 7, and the sliding members of all these devices are made in one piece kept in operative position by springs 21 and operated by a cable attached at 23.