baber/WOPTO huggingface dataset:
Patent GB-510242-A (GB)
Title: Manufacture of polymethine dyestuffs
IPC: C09B23/10
Filed: 1938-01-28
Abstract: 510,242. Dyes. GROVES, W. W. (I.G. Farbenindustrie Akt.-Ges.). Jan. 28, 1938, No. 2772. [Class 2 (iii)] Symmetrical or unsymmetrical polymethine dyes are made by condensing a semicarbazone or thiosemicarbazone of the following general formula:- wherein R1 and R2 = H1, H2, alkyl or aryl, or R1 and R2 and the carbon atoms of the heterocyclic ring to which they are attached together form a benzene ring, which may contain substituents, R3 = alkyl or aralkyl, Y = O, S, Se, -CH = CH-, C(CH3)2, and X = CONH2 or -CSNH2, with a quaternary salt of a heterocyclic nitrogen compound. containing a reactive methyl or methylene group in alpha- or y-position to the nitrogen atom or with a heterocyclic nitrogen compound containing in the ring a keto-methylene group. They may be used for dyeing or for sensitizing photographic emulsions. In the examples the following compounds are heated in presence of pyridine and acetic anhydride and the reaction mixture further heated in presence of methanol, the dyestuff in some cases being precipitated with sodium perchlorate ; (1), (2), (4) and (5) the semicarbazone or thiosemicarbazone of N-ethyl-2-methenethiazoline-#- aldehyde and N-phenyl-2-methylbenzimidazole ethiodide or 2:5:6-trimethylbenzoxazole methiodide or rhodanine or 2-methylbenzthiazole ethiodide, (3) the semicarbazone of N-ethyl-2- methenebenzthiazole-#-aldehyde and rhodanine, (6) the semicarbazone of N-ethyl-2- methenebenzselenazole-#-aldehyde and 2-methylbenzthiazole ethiodide, (7) the semicarbazone of N-methyl-2-methenebenzoxazole-#- aldehyde and 2-methylthiazoline methiodide, (8) the semicarbazone of 1:3:3-trimethyl-2- methene-indoline-w-aldehyde and 2-methylthiazoline ethiodide, (9) the semicarbazone of N-ethyl-2-methenequinoline-#-aldehyde and rhodanine. The semicarbazones and thiosemicarbazones used as starting materials are made by condensing the corresponding #-aldehyde (cf. Specification 486,780) with the desired semicarbazide or thiosemicarbazide.
Patent GB-326192-A (GB)
Title: Improvements in or relating to television and like systems
IPC: H04N3/04
Filed: 1928-11-05
Abstract: 326,192. Baird, J. L., and Television, Ltd. Nov. 5, 1928. Divided on 324,949. Drawings to Specification. Television.-The image formed by a bank of lamps in a television receiver, of the kind described in Specifications 222,604 and 291,121, is projected by a lens system on to a viewing screen.
Patent GB-944080-A (GB)
Title: Improvements in or relating to carboxylic acids
IPC: C07C51/02
Filed: 1962-01-25
Abstract: A method of modifying the physical properties of a carboxylic acid comprises acidifying e.g. with a mineral acid preferably sulphuric acid, an aqueous solution of an alkali metal salt or ammonium salt of a carboxylic acid in the presence of at least 0.1% by weight, based on the weight of the acid of a surface active agent and separating the resulting acid.  Specified carboxylic acids of which examples are given of treatment are terepthalic and isophthalic acid. Specified surface active agents are sodium dodecyl benzene sulphonate, polyoxyethylene oleyl ether, polyoxypropylene glycerol ether, polyoxyethylene dodecylimine and polyoxyethylene alkyl phenol ether.
Patent GB-760725-A (GB)
Title: Improvements relating to variable throw cranks
Inventor: CASTER JOHN EMERY
IPC: B30B1/26
Filed: 1954-01-30
Abstract: 760,725. Eccentrics. HORDERN MASON & EDWARDS, Ltd. Jan. 31, 1955 [Jan. 30, 1954], No. 2862/54. Class 122 (1). [Also in Group XXIV] A variable-throw crank or eccentric comprises an eccentric bored sleeve 14 which is mounted upon the main crank-pin or eccentric 11 and is adjustable relatively thereto to vary the throw or eccentricity. The sleeve 14 has a flange 16 thereon with teeth 17 which are engaged by teeth on a locking-member 18 slidable along splines on the cheek 13 of the crank or eccentric. The locking member 18 is adapted to be moved into or out of locking engagement by a ring 23 located axially by an extension 28 of the sleeve flange 16 and in screwed engagement with the member 18. Rotation of the ring 23 and the sleeve 14 is effected by tommy-bars in holes 30, 31 respectively. The ring 23 is gapped and adapted to be tightened on to the locking member 18 to secure it in locking engagement with sleeve 14. Specification 744,821, [Group XXIV], is referred to.
Patent GB-632628-A (GB)
Title: Improvements in and relating to tables, cabinets, chairs and like articles having legs
IPC: A47C7/00
Filed: 1948-01-31
Abstract: 632,628. Carpenters' joints. GREAVES, C. G. T. Jan. 31, 1948, No. 2908. Drawings to Specification. [Class 20(ii)] [Also in Group XIV]  A carpenter's joint comprises interengaging undercut or dovetail grooves and projections together with resilient means for taking up play between the groove and, the projection. The constructions are described in Group XIV.
Patent GB-1311721-A (GB)
Title: Hydraulic balancing mechanism
IPC: A47C17/40
Filed: 1970-01-21
Abstract: 1311721 Cabinet beds J P HERRERA 21 Jan 1970 [28 Feb 1969] 2965/70 Heading A4J [Also in Divisions B8 E2 and F2] Movement of a pivoted bed A from its inoperative, Fig.1, to its operative, Fig.2 position stresses a spring in a piston-cylinder hydraulic damper unit, Fig.3 (not shown but see Div F2), whose cylinder 1 is connected to the bed, so that the bed can subsequently be pivoted back to the inoperative position under the spring force. Upward movement of the bed is substantially undamped, but downward movement is damped to an extent which is adjustable from outside the damper unit. The adjustment may even lock the bed in an intermediate position against further downward movement.
Patent GB-1375433-A (GB)
IPC: B65D1/28
Filed: 1972-01-22
Abstract: 1375433 Food containers GUARDIAN PACKAGING CORP 22 Jan 1972 3128/72 Heading B8C [Also in Divisions B2 and D1] A flexible semi-rigid laminated packaging material comprises a first layer of acrylonitrilebutadiene-styrene copolymer, methylmethacrylate-styrene copolymer or butadiene-styrene copolymer bonded to a second layer of polyvinylidene chloride or copolymer of vinylidene chloride with one or more unsaturated aliphatic compounds, e.g. vinyl acetate or chloride acrylonitrile, the vinylidene chloride being the major comonomer, by means of a third layer of adhesive between them. The adhesive layer may comprise 68% by weight of acrylic resin comprising methyl, ethyl, propyl, or butyl acrylic and methacrylic acid ester polymers, 22% by weight of vinyl chloride-vinyl acetatedibasic acid terpolymer and 10% by weight of a glycolate plasticizer applied in a methyl ethyl ketone solvent. The laminated material A may be vacuum formed into a series of food containers on a mould F having a plurality of cavities 44 conforming to the outside dimension of the container and provided with holes G, the vinylidene chloride polymer layer forming the inner surface of the containers.
Patent GB-870274-A (GB)
Title: Process for the preparation of trichloro-isocyanuric acid
Filed: 1958-01-30
Abstract: Trichloroisocyanuric acid is prepared by introducing chlorine into an aqueous suspension of sodium bicarbonate until the suspension is saturated with chlorine, and continuing the introduction of chlorine to maintain saturation while simultaneously adding an aqueous solution of sodium cyanurate at a temperature of 0 DEG C. to 5 DEG C. A precipitate of trichloroisocyanuric acid is obtained, which may be filtered off, washed with cold water, and dried.  The pH of the initial solution when saturated with chlorine is about 3.3, and the final pH after adding the sodium cyanurate should be about 4.6. Specification 634,801 is referred to.
Patent GB-255914-A (GB)
Title: Improvements in or relating to centrifugal separators
IPC: B04B1/10
Filed: 1925-02-04
Abstract: 255,914. Garland, C. S., Hinchley, J. W., and Watson, C. S. Feb. 4, 1925. Density separators; discharging.-A centrifugal machine for separating solids from liquids has its bowl formed in two axially separable parts constrained towards each other by resilient means. A brake surface within the chamber suffers an increasing frictional drag as the solids are deposited and this causes the separation of the bowl members to discharge the solids. In the first example, Fig. 1, the two bowl members 5, 6 are of opposed conical form, the lower part 6 being supported on the bearing 7 and directly driven by any convenient means. The upper part 5 is carried by a web 9 on a boss 10 loosely fitting on the spindle 8. Secured to the boss is a flange 13 connected by spring rods or blades 14 to a similar flange 12 on a sleeve 11 secured to the spindle. The bowls rotate together, the spring rods allowing a limited angular movement of the top part in relation to the lower part. The brake surface is provided by a lip 16 at the lower end of a tube 17 which is attached to the casing. The mixture is supplied through the hopper 19 and passes through the trough 21 into the lower bowl 6. The liquids pass up the drum and are discharged over the lip 25 while the solids collect in the wedgeshaped pocket formed at the meeting edges of the bowl parts. When this deposit reaches the lip 16 the friction increases to retard the upper part 5. The screw connection between the boss 10 and the part 6 causes the parts 5, 6 to separate to enable the solids to be discharged. A hand-operated plunger 30 is provided to impinge on the part 6, so that the bowl parts may be separated for cleaning. In the modified form of apparatus shown in Fig. 2, the upper bowl part 5 is normally stationary and carries the brake surface 16. The part 5 is attached to a boss 40 in a screwthreaded engagement with the fixed tube 41. As the solids are deposited, the frictional drag on the surface 16 increases until it moves the top part 5; the rotation then causes the parts to separate for discharge of the solids. The part 5 is normally held by a spring 43 the tension of which can be adjusted by means of the nut 45. To enable the part 5 to be operated manually, a wire 50 is secured to the boss 40 and to a screwthreaded rod 51 engaging in a bush 52 in the casing, so that rotation of the rod turns the part 5 against the pull of the spring 43. In another modification the lower bowl part is fixed and is in the form of a flat disc; the upper part is dished and is rotatable. The brake surface is formed on the lower part, or it may be formed on an abutment which projects through the lower part and is arranged to move the upper part axially.
Patent GB-606161-A (GB)
Title: Improvements in or relating to adjusting and indicating devices for tuning wireless receivers and the like
IPC: H03J1/08
Filed: 1946-02-01
Abstract: 606,161. Indicating-apparatus. TYE, L. C. Feb. 1, 1946, No. 3226. [Class 40 (v)] [Also in Group XIX] An adjusting and indicating mechanism for wireless receivers and similar instruments comprises an elongated screw or worm which drives a worm-wheel and rotates the moveable parts of a tuning condenser or similar component, an indicator consisting of a part nut travels along the same screw or worm engaging only one side of it, so that it is able to pass the worm wheel and give a rectilinear indication of the rotation applied to the condenser. The Figures show a worm 7 which is driven by knob 24 or fly-wheel 25 and engages with a worm-wheel 9 mounted on a shaft 10 which is journalled in an adjustable bearing 11. The worm also imparts rectilinear movement to a part nut 19 which is attached to a bent strip 17 thus moving carriage 14 to which pointer 13 is attached along the guide rod 15. The worm is mounted in a bearing 8a which has a limited sliding movement as shown in Fig. 3. The bent strip 17 which constitutes a spring ensures that the worm 7 is in close engagement with both the part nut 19 and the wormwheel 9. The bevel gear 20 is a a spring fit on the worm 7 so that the coupling will slip if the tuning knob continues to be rotated when the limit of movement of spindle 10 has been reached. Fine adjustment of the worm 7 is indicated by a vernier scale 27 on a drum 26.
Patent GB-994776-A (GB)
Title: Improvements relating to remote indicating apparatus
Inventor: MCALLISTER LAWRENCE EDWARD
IPC: G08C19/22
Filed: 1961-01-27
Abstract: 994, 776. Measuring displacement electrically. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 26, 1962 [Jan. 27, 1961], No. 3317/61. Heading G1N. The position of e.g. the control rod of a nuclear reactor determines the phase of an A.C. voltage, and is measured by comparison with a reference A.C. voltage of the same frequency. As shown, the measuring voltage and the reference voltage are each squared and differentiated, the pulses corresponding to the leading (or tailing) edges triggering a bi-stable circuit to produce a square pulse train whose mark/space ratio, as measured by the average value, is indicative of the phase difference between the measuring and reference voltages, and hence the position of the control rod within one cycle of the reference voltage. The average value of the square pulse train is also differentiated to produce a pulse each time it passes through zero, corresponding to a unit of displacement equal to one cycle of the reference voltage, and these pulses are counted to give a coarse measurement of the displacement. The pulses are positive or negative depending on the direction of movement, and the counter is sensitive to the polarity of the pulses.
Patent GB-547885-A (GB)
Title: Improvements in and relating to the manufacture and production of artificial threads and the like from viscose
IPC: D01F2/10
Filed: 1941-03-13
Abstract: 547,885. Artificial filaments. COURTAULDS, Ltd., and SHARPLES, E. H. March 13, 1941, No. 3413. [Class 2 (ii)] Artificial filaments are obtained by extruding viscose into an aqueous coagulating solution containing sulphuric acid and at least one metallic salt in presence of a compound containing the imidazoline group in which a hydrocarbon radical containing at least 9 carbon atoms is attached to the carbon atom which is situated between the two nitrogen atoms in the imidazoline ring. The imidazoline compound may be added to the viscose or to the coagulating solution. The compound used may be the hydrochloride of 2-undecyl-imidazoline, or the lauryl derivative of benzimidazol, i.e. 2- undecyl-benzimidazol. The imidazoline compound tends to reduce stoppages of the holes in the spinning nozzles and breakages of the filaments during their passage through the spinning bath and to the collecting bobbins. In an example, viscose is extruded into a solution of sulphuric acid containing sodium sulphate, zinc sulphate, and 0.02 per cent of 2-undecyl-imidazoline.
Patent GB-1119907-A (GB)
Title: Method of producing a firm selvedge on fabric woven on a shuttle-less weaving loom and equipment for carrying out the method
IPC: D03D47/48
Filed: 1967-01-24
Abstract: 1,119,907. Shuttleless looms; selvedges. DRAPER CORP. 24 Jan., 1967 [17 March, 1966], No. 3474/67. Heading D1E. As a weft inserter leaves the shed a camoperated suction tube Fig. 5, moves rearwardly to engage the weft end and then moves forwardly to bring the weft into contact with a second cam-operated pivoted suction tube 67. After beat-up and shed change the second tube 67 enters the shed to tuck-in the end and shears 75 penetrate the upper warp sheet to sever the end to a specific length. As the tube 67 leaves the shed it sucks away the cut end, and the first tube 49, which has moved rearwardly, places the next weft over the tucked in end and tube 67 ready for the next beat up. Weft cutter: The weft end cutter, Fig. 6, comprises a blade fixed to a cam-operated pivotal lever 72, and a second blade 81, with a tag 89 slidable on and pressed to the first blade by a spring loaded plate 85. As the cutter is pivoted it penetrates the upper warp sheet and the tag 89 engages an abutment and stops whilst the first blade continues moving and the end is severed in a gap 90 between the blades.
Patent GB-270408-A (GB)
Title: Improvements in or relating to brush making machines
IPC: A46D3/06
Filed: 1926-02-08
Abstract: 270,408. Shipley, A. H., and Berry, A. B. Feb. 8, 1926. Drilling brush stocks. - In an automatic machine of the kind in which the work is moved up to the drilling or filling tool and between the movements is displaced bodily to bring a fresh portion of the work in position, auxiliary means is provided comprising a templet and a co-operating member, the latter being actuated solely to effect accurate location of the work after each displacement thereof. The invention is described in association with a machine such as that described in Specification 221,589. As shown the templet 2, comprising a plate with countersunk holes corresponding to those required in the brush stock, is detachably secured to a block 3 movable along a horizontal guide 5 which is movable up and down a vertical guide 6. The guide 6 is secured to a slidable carriage 9 supporting a pair of pivoted work-holding heads 4. The block 3 has a tongue piece 3<a> engaging a bifurcated part 10<a> of a link 10 which couples the two heads 4 and controls their movement about vertical slide rods 11. The vertical movement of these rods is adapted to cause movement of the work holders about horizontal axes in the heads 4. These rods are connected by a bar 12 to which the guide 5 is attached. The movement of the templet therefore corresponds with that of the brush stocks. A pointer 1 for engagement with the holes in the templet is carried by a slide bar 13 which is adapted to be moved rearwardly by cam and rack mechanism against the action of a spring 27. The arrangement is such that the pointer 1 engages the templet before the carriage 9 moves forward to bring the work to the tools, and is held in engagement during the operation of the tools. Specification 270,409 also is referred to.
Patent GB-314594-A (GB)
Title: Improvements in or relating to electro deposited protective coatings for vessels
IPC: B65D23/08
Filed: 1928-02-04
Abstract: 314,594. Ainstein, I., (known, as Einstein, W. I.). Feb. 4, 1928. Coatings, external. - Vessels or apparatus of glass, earthenware, porcelain and like brittle materials intended to withstand internal fluid pressure as well as external shocks, such as siphons and certain other industrial, laboratory, philosophical, chemical, and like vessels and apparatus, have an external metallic coating 2 applied to them by deposition. Hollow ribs 5 or ridges 4 which may form images or inscriptions, and apertures may be formed. The ribs or the like are made by first sticking to the surface of the vessel ribs or ridges of rubber, paraffin wax, paper etc., or by merely applying an additional thickness of the preparation used for coating the surface. A safety valve 6 in a chamber 9 formed as part of the metallic coating may be provided.
Patent GB-479560-A (GB)
Title: Improved yarn and fabric made therefrom
IPC: D02G3/18
Filed: 1937-02-06
Abstract: 479,560. Yarns ; fabrics. NAAMLOOZE VENNOOTSCHAP MAATSCHAPPIJ TOT BEHEER EN EXPLOITATIE VAN OCTROOIEN. Feb. 6, 1937, No. 3574. Convention date, Feb. 7, 1936. [Classes 120 (iii) and 142 (iv)] A yarn-is made from glass fibres intertwisted with organic textile fibres, e.g. cotton, wool, flax or silk. The yarn shown in Fig. 1, is made of yarns 5 of intertwisted glass wool twisted with yarns 6 of an organic textile fibre and when woven into a fabric 10, Fig. 3, the glass fibres holds the fabric intact when subjected to heat or acids in an area 11 where the organic fibres have been eaten out or weakened ; yarns may be used for both warp and weft. The yarn may be dyed, the glass fibres remaining uncoloured and giving the yarn unusual colour and light effect.
Patent GB-1203602-A (GB)
Title: Covered dish for packaging foodstuffs and like products
Inventor: BARTLETT JOHN REGINALD
IPC: B65D77/20
Filed: 1967-01-25
Abstract: 1,203,602. Package closures. E. S. & A. ROBINSON Ltd. 22 Feb., 1968 [25 Jan., 1967], No. 3760/67. Heading B8C. A rectangular dish with an outwardly extending mouth flange has a flat cover 4 with edge panels which fold under the flange along lines of weakness 6 and are adhered to the underside of the flange. The cover 4, made of board, paper, filmic material or metal foil, has a tab 8 on one edge which is joined to the two adjacent edges by tear lines 7.
Patent GB-1036165-A (GB)
Title: Improvements in or relating to semiconductor devices
Inventor: HILL JOHN
IPC: H01L23/04
Filed: 1964-01-29
Abstract: 1,036,165. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. Jan. 29, 1964, No. 3786/64. Addition to 1,023,531. Heading H1K. A device comprising a semi-conductor wafer with at least one contact comprising a layer grading outwards from an adherent to a softsolderable metal and extending from a semiconductor zone on one face over an insulating layer thereon has its contacts soldered to the lead wires of a header. In an embodiment, a planar transistor, Fig. 1, made in multiple by successive diffusions into a silicon wafer through apertures formed in a surface oxide layer by photo-resist etching techniques, is provided with an overall film of aluminium. This is removed, except from areas of the emitter, base and collector zones exposed through apertures in the oxide film, by photo-resist etching techniques. An overall film graded from chromium beneath to gold above is then deposited as described in Specification 1,010,111 and reduced to strips 9, 10, 11 in contact through the aluminium with the collector, base and emitter zones respectively. The transistor is dipped in flux and then in a lead-tin eutectic or a commercial silver solder to tin the strips which are next soldered to the flattened ends of wires 13 extending from header 12 (Fig. 4). Alternatively, the wires terminate on the header surface in graded chromium-gold films to which the strips are soldered. The transistor is sealed by welding a top cap to the header flange. Prior to or as alternative to this an opaque insulating coating may be provided, e.g. by transfer moulding. Suitable coating materials are rubber, nylon, polypropylene, and epoxy and silicon resins, incorporating alumina or glass as fillers to match the expansion coefficient to that of silicon. Successive coatings of different materials may be applied, and to assist cooling a block of copper may be embedded in the coating. In an alternative method of making the transistor, the aluminium contacts are replaced by nickel or omitted. If the diffused regions are formed in a high resistivity layer epitaxially grown on a heavily doped silicon wafer, the collector contact may be deposited in a groove cut through the oxide and epitaxial layers. Application of the invention to silicon controlled rectifiers and diodes and to germanium devices incorporating a silicon oxide coating is also suggested.