baber/WOPTO huggingface dataset:
Patent GB-452473-A (GB)
Title: Improvements in and relating to diplex telephony and telegraphy
IPC: H04M11/06
Filed: 1936-01-17
Abstract: 452,473. Diplex telephony &c. RADIO INDUSTRIE, 24, Rue du Docteur-Finlay, Paris. Jan. 17, 1936, No. 1608. Convention date, Jan. 19, 1935. [Class 40 (iv)] In diplex telephony or telegraphy, distribution is effected by the superposition on the transmission line of alternating current of inaudible frequency and the use of suitably poled dry contact rectifiers. As shown in the Figure, simultaneous conversations can occur over jacks 8, 9 at one station and corresponding jacks 81, 91 at another station. The distributer source 1 is connected across line 2, 3 in series with tuned circuits which reject telephonic currents, and the jacks 8, 8<1>, 9, 91 are connected to the line over transformers 10, 10<1>, 11, 11<1> shunted by capacities to permit passage of distributer current, the branches in which jacks 8, 81 are connected having rectifiers 14, 14<1>, 19, 191 similarly poled in one direction, whereas the other branches leading to jacks 9, 9<1> have similarly poled rectifiers in the other direction. The various branches have adjusting resistances, e.g. 6, 15 for balancing the system about neutral points, e.g. 17, which may be grounded and connected to metal frames &c. Calling is effected by direct current which, in accordance with its polarity, operates corresponding calling devices 18, 181 at both stations. In a modification, Fig. 2 (not shown), alternating current sent over one or other of the line wires, is used for calling, the telephone sets and calling devices of the two circuits being oppositely connected to the line wires.
Patent GB-785051-A (GB)
Title: Purification of terephthalic acid
Inventor: O'NEILL WILLIAM ALEXANDER
Filed: 1955-01-19
Abstract: Terephthalic acid is purified by heating the crude acid with a fatty acid of less than 7 carbon atoms until solution occurs, cooling the resultant solution and allowing the terephthalic acid to crystallize out.  Aqueous solutions of the fatty acid may be used in place of the pure fatty acid and heating may be conducted under pressure to a temperature above the normal boiling point of the fatty acid.  Fatty acids mentioned are acetic, propionic and butyric acids.  The purification may be preceded by a recrystallization of the crude terephthalic acid from water under pressure.  Examples are given.
Patent GB-962142-A (GB)
Title: Vat dyestuffs of the dibenzanthrone series and process for their manufacture
IPC: C09B3/30
Filed: 1962-01-16
Abstract: 962,142. Dibenzanthrone and isodibenzanthrone dyes. CIBA Ltd. Jan. 16, 1962 [Jan. 16, 1961; Dec. 8, 1961], No. 1613/62. Heading C4P. The invention comprises vat dyes of the formula in which n is 1 or 2, Y represents two alkoxy or alkyl groups or one to four halogen atoms or no substituent, one X is a direct bond and the other is a -CO- group and Z is the residue of a sulphatoalkylamine bound through the nitrogen atom and in which the alkylene chain may be interrupted by hetero atoms, the residue containing more than 5 carbon and hetero atoms between the sulphato group and the amidenitrogen atom. The dyes are made by amidating a compound of the formula where n, Y and X are as above with a sulphatoalkylamine or hydroxyalkylamine having more than 5 carbon and heteroatoms between the sulphato or hydroxy and amino groups, and when a hydroxyalkylamine is used esterifying the hydroxy group with a sulphating agent. Dyes in which the alkylene chain is interrupted by nitrogen may be made by condensing a sulphato-alkylamine having at least 3 carbon atoms with a dye of the formula I above, where n, X and Y are as above but Z is an aliphatic amino group of at least two carbon atoms and having in #- or γ-position a substituent capable of being split off. Dyes in which Y represents halogen atoms may also be made by halogenation of the non-halogenated dyes. The dyes vat-dye and print cellulose fibres in blue to violet shades.
Patent GB-545394-A (GB)
Title: Improvements relating to the production of dyestuffs on textile fibres
IPC: D06P5/12
Filed: 1941-02-07
Abstract: 545,394. Dyeing textiles. CALICO PRINTERS' ASSOCIATION, Ltd., and LANTZ, L. A. Feb. 7, 1941, No. 1678. [Classes 2 (iii) and 15 (ii)] Aniline-black and like dyeing; printing. Brown shades are produced on textile fibres by oxidation thereon of a condensation product of m-phenylenediamine with formaldehyde in an acid medium. Preferably to 1 mol: of formaldehyde is condensed with 1 mol. of the diamine. Oxidationcatalysts such as compounds of vanadium, copper or cerium, may be used. Printing may be effected with a paste made by adding formaldehyde and a thickening agent to an.acidified aqueous solution of the diamine, an oxidizing agent being incorporated in the paste or used for an after-treatment of the printed fabric. Alternatively the formaldehyde may be caused to react with the diamine in an acid medium, whereupon the condensation product is precipitated by addition of alkali, filtered off, washed, dried, re-dissolved in acid and mixed with the thickening agent. Padding or impregnating liquors are obtainable by replacing the thickening wholly or in part by water. The brown shades may be modified by an after-treatment with a solution of a diazonium salt or by diazotization and coupling. with a component such as #-naphthol. In examples, (1) aqueous formaldehyde is added to an aqueous solution containing m-phenylenediamine and lactic acid and the solution is allowed to stand for 15 minutes, whereupon sodium chlorate and ammonium vanadate solutions and gum tragacanth thickening are added and the resulting paste is printed on cotton fabric, which is then dried, steamed, washed and soaped to obtain a nigger brown print ; (2) aqueous formaldehyde is added to an aqueous solution containing m-phenylenediamine and acetic acid and the solution is allowed to stand for 15 minutes, whereupon carob bean thickening is added and the resulting paste is printed on cotton fabric, which is then dried, passed through a cold aqueous solution containing sodium bichromate, copper sulphate and sulphuric acid, washed and soaped to obtain a reddish dark brown print ; (3) a solution obtained as in (1) without adding the thickening is diluted with water and used to impregnate a cotton fabric, which is then dried, printed with a resist preparation comprising an aqueous paste containing sodium formaldehydesulphoxylate, potassium sulphite, sodium acetate and gum tragacanth thickening, dried, steamed, washed and soaped to obtain a white pattern on a nigger brown ground ; (4) a print obtained as in (1) is developed with diazotized p-nitraniline, rinsed, soaped and dried to obtain a very dark chocolate brown print; (5) a print obtained as in (1) is diazotized on the fibre and developed with g-naphthol to obtain a rich mahogany brown print.
Patent GB-1125292-A (GB)
Title: Slide wire potentiometer
IPC: H01C10/30
Filed: 1965-08-27
Abstract: 1,125,292. Potentiometers. ELECTRONITE CO. 27 Aug., 1965 [31 Aug., 1964], No. 1808/68. Divided out of 1,125,291. Heading H1S. A slide wire potentiometer comprises a plurality of pairs of wires such as 140a, 140b and 138a, 138b (Fig. 2) each pair being formed as a single wire of resistance material arranged in the form of a U, adjacent wires being engaged under spring pressure by a contact 152 arranged between them and carried by a movable arm. The wires may be pressed on to the contact 152 by V-section ends of a U-shaped spring member in which 152 is arranged. Alternatively an insulating channel member (216), (218), (Fig. 10, not shown), may be arranged between the wires of each pair, the adjacent wires of adjacent pairs being engaged by different arms of a U- shaped spring contact. The pairs of wires 138, 140 are spring tensioned and though both of them are of resistance material 140, which is used as a pick-up lead, is made of larger diameter and has its ends interconnected. The resistance per foot of the slide wires may vary. The moving arm carrying the contacts is attached to the armature 40 of a reciprocable linear induction motor and carries a pen (124), (Fig. 1, not shown), co-oprating with a moving record sheet (130) as well as a pointer moving over a scale (see Division H2).
Patent GB-284693-A (GB)
Title: Improvements in or relating to electric incandescent lamps
IPC: H01K1/46
Filed: 1928-01-19
Abstract: 284,693. General Electric Co., Ltd., (Assignees of Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen). Feb. 4, 1927, [Convention date]. Caps; holders. - Bulbs are provided with caps comprising an insulating member 10 cemented into the foot tube 2 and having a central hole 14 to accommodate the exhaust tube 9, and a shoulder 11 adapted to abut against the flared rim of the foot tube, the member 10 being provided with a screw-thread 17 at its outer end to enable it to be inserted into a holder 19 and the distance between the shoulder 11 and the screw contact 17 being such that an extension sleeve 20 of the holder 19 entirely covers the screw contact before it engages with the contact 21 of the holder. Channels 13 are arranged around the cap to permit expansion of the air in the foot tube, and one of these channels is extended at 16 to convey the leading- in wire 7 to the contact 17, while the other wire 8 passes through the bore 14 to the centre contact 15. Cement is applied in the channel 16 to fix the cap.
Patent GB-979222-A (GB)
Title: Improvements in or relating to hydraulic jet propulsion apparatus for water-borne craft
IPC: B63H11/00
Filed: 1961-01-17
Abstract: 979,222. Hydraulic jet propulsion of boats. C. W. F. HAMILTON & CO. Ltd. Jan. 17, 1961 [Jan. 21, 1960], No. 1877/61. Heading B7V. A propulsion apparatus for a boat comprises a pump 2 driven by a motor 3 to draw in water through an inlet passage 1 and to discharge it as a jet through the outlet passage 4. The pump comprises a casing 7 and contrarotating impellers 10 mounted on a shaft 11 driven by a shaft 15 through gearing 16 and 18. A jet deflector 5 for reversing and steering the craft is disposed at the outlet 4. The unit comprising the pump, motor and deflector is mounted so as to be readily detachable outboard of the craft in sealing engagement with the outlet aperture of the passage 1.
Patent GB-851382-A (GB)
Title: Improvements in and relating to an apparatus for coiling strip material
Inventor: TRACY JOHN ANDRE
IPC: B21C47/06
Filed: 1958-01-20
Abstract: 851,382. Winding and reeling. LOEWY ENGINEERING CO. Ltd. April 20, 1959 [Jan. 20, 1958], No. 1895/58. Class 83 (4). [Also in Group XVI] Apparatus for coiling strip material comprises a central mandrel, guide-rollers, reciprocators, displaceable towards and away from the surface of the mandrel, each pivotally coupled to two adjacent carriers, so that the reciprocator and the coupling-points of said carriers are movable towards or from the mandrel along substantially parallel paths, and separate guide means associated with each of said carriers whereby the guide rollers of a carrier are maintained in contact with the outer surface of said strip during coiling thereof. Hot rolled metal strip S passes from pinch rolls 40, 42 through a guide 18 and under a roll 44 to be guided around a collapsible mandrel 12 by guide-blocks 16 and rollers 14, the mandrel 12 and each pair of rollers having its own drive-motor. Each pair of rolls 14 is mounted on a carrier 22 and two adjacent carriers 22 are coupled by pivoted links 24 to a member 25 movable radially of the mandrel 12 against the inwardly-directed pressure of duplicate cylinder and ram units 20 as the coil is built up. An extension 28 of each link 24 engages a spring-loaded plunger 30 to absorb shocks. A guide arm 32 formed integrally with each carrier 22 is pivotally coupled to a slide block 34 mounted in a slideway 36 disposed so that the rolls 14 are maintained in tangential relationship to the coiled strip. Each slideway 36 has a slight pivotal movement and has resilient shock damping means 38. An upper part 46 of the guide 18, carrying the roll 44, is gradually pivoted away from the mandrel 12 as the coil builds up by a fluid-operated plunger 50 and linkage 48. A lower part 52 of the guide 12 is linked by an arm 54 with a member 25 and is guided at one end in a slideway 56 so as to move similarly to the upper part 46.
Patent GB-1164903-A (GB)
Title: Improvements in or relating to Printing Apparatus.
IPC: B41J31/12
Filed: 1967-01-13
Abstract: 1,164,903. Selective printers. LAMSON PARAGON Ltd. 13 Jan., 1967 [4 Feb., 1966], No. 2000/67. Heading B6F. A selective printer, having a plurality of characters disposed on an endless belt 10, Fig. 4, or a rotary type cylinder (not shown) and associated with a plurality of hammers 20 and means for supporting a number of record sheets a and transfer sheets b between the belt and the hammers 20, is provided with a plastics laminar shield which are disposed between the obverse surface of the last record sheet a and the hammers to eliminate the formation of a halo or shadow image around the reproduced character. The laminar shield comprises two to seven layers of a polyethylene terephthalate film 0À0015 inch thick and mounted by means of fasteners 55 in a nose cone 50 which spans the hammers 20.
Patent GB-284190-A (GB)
Title: Improvements in spring washers
IPC: F16B39/24
Filed: 1928-01-23
Abstract: 284,190. Vossloh, K. Jan. 22. 1927, [Convention date]. Addition to 263,122. Washers. - A single-turn spring washer forming a modification of that described in the Parent Specification has arcuate bends in each half with the ridges thereof oppositely directed,.the bases of the bends being equal to the external diameter of the spring. A narrow zone 1 between the two bends 2, 3 conforms to the normal helix of the spring, the bends being respectively down and up toward the ends 4, 5.
Patent GB-437920-A (GB)
Title: Improvements in electric braking arrangements for electric motors
IPC: H02K47/16
Filed: 1935-01-22
Abstract: 437,920. Control of D.C. Motors. PESTARINI, G. M., Societa San Giorgio, Genoa, Sestri, Italy. Jan. 22, 1935, No. 2103. Convention date, Jan. 22, 1934. [Class 38 (iii)] Regenerative and non - regenerative braking.-For braking traction motors M1, M2, which are fed with constant current from a commutator machine, MT, switching means are provided whereby a resistance R is connected across the primary brushes a, c, of the machine MT, or in series with the motors M1, M2, to absorb power developed by the motors. The resistance may be that connected in the circuit of the machine MT for starting. The motors may be connected one across brushes c, b, and the other across brushes a, d. The controller may be provided with driving and regenerative braking notches and additional notches for connecting the resistance, the resistance braking being employed if regenerative braking fails. The braking resistance may be constituted wholly or in part by the coil of electromagnetic brakes, or these latter brakes may be supplied separately from auxiliary machines on the shaft of the machine MT. Specification 417,517, [Group XXXV], is referred to.
Patent GB-1117054-A (GB)
Title: Gas turbine heated hot air buoyant airships
IPC: B64B1/00
Filed: 1967-05-30
Abstract: 1,117,054. Airships. A. P. PEDRICK. 30 May, 1967, No. 2257/66. Heading B7W. In an airship in which the lift is provided by an enclosed volume of slightly pressurized, heated gas or air, the gas or air is heated by energy derived from the combustion of fuel in a gas turbine. As shown in Fig. 1, the airship has a main longitudinal structural member 1 in the form of a cylindrical tube, the rear end of which is coaxially secured in a tube 3 by fixed guide blades 2. The air bag 5 is secured forwardly to the tube 1 at 6 and rearwardly to the tube 3 at 4. During normal forward propulsion of the airship, air enters the nose aperture 8, is compressed by the rotary axial flow air compressor 7, is heated by burning fuel in space 9, changes direction to flow forwardly and enters the air bag 5 through controllable openings in the tube 1. The air being under pressure expands the bag and discharges therefrom through the blades 2 and turbine blades 13. 'The turbine rotor 18 drives the compressor 7 through a shaft 11 and speed increasing gearbox 10. The airship has tail fins 20 of which the lowest acts in conjunction with the flat base of a pilot and passenger cabin 21 to support .the airship in a level manner on the ground. Housed within a central body 14 to the rear' of the turbine rotor are four deflector cowls which may be pulled collectively or individually from their housings to deflect the outflowing gas stream, thus controlling the airship's line of movement. Three equi-spaced radial pipes 23 ... 25 extend from the compressor outlet to the surface of the bag 5 to provide jets of air, controlled by valves, enabling the airship to be manoeuvred whilst not being moved forward by the main jet stream. In a modification, two identical airships are linked by a structure of airfoil section, Figs. 12 to 14 (not shown), giving aerodynamic lift in forward motion. In a further modification, the airship is in the form of a " flying wing " of airfoil section and houses three gas turbine tubes, Figs. 17 to 20 (not shown). Provision may be made for cooling the gas envelope with a stream of air, and for alternatively heating the gas within the envelope by an electric heater supplied from a generator driven by the gas turbine. Finally, a winged aircraft, Figs. 33a to 33c (not shown), may have attached thereto a balloon which for vertical take-off and landing is inflated by the efflux from a gas turbine whilst in forward flight the aircraft is propelled by a pusher airscrew driven by the gas turbine, the balloon then being deflated and trailing behind the aircraft.
Patent GB-1454351-A (GB)
Title: Phosphite esters of oxyalkylenated-aminodiphenylamines
IPC: C08K5/52
Filed: 1974-01-17
Abstract: 1454351 Phosphite antioxidants HOOKER CHEMICALS & PLASTICS CORP 17 Jan 1974 [24 Jan 1973] 02348/74 Headings C3P and C3Q [Also in Divisions C2 and C5] Organic substrates are stabilized against atmospheric degradation by incorporating therein a compound of Formula I where R is selected from ethylene, 1,2-propylene, 1,2-butylene, 2,3-butylene, styrylene and mixtures thereof, x is 1 to 12, R<SP>1</SP> is optionally substituted alkyl or aryl, n is 1 to 3, each m is independently H, C 1-20  hydrocarbyl, and p is 0 or 1 provided that, when p is 0, (m 2 N)p is replaced by H. The organic substrate may comprise a natural or synthetic rubber and the compounds of Formula I may be used in combination with conventional accelerators.
Patent GB-652395-A (GB)
Title: Improvements in or relating to processes for producing composite pictures on motion picture films
Inventor: MANN NED HERBERT
IPC: G03B15/08
Filed: 1948-01-26
Abstract: 652,395. Composite photography. LONDON FILM PRODUCTIONS, Ltd. Jan. 26, 1948, No. 2355. Drawings to Specification. [Class 98 (ii)] In a travelling mask process for producing a black and white composite motion picture film, the mask is produced by illuminating a foreground scene with red or amber lighting and a plain backing for said scene with blue or white lighting, exposing the scene and backing on a multi-layer colour film and developing said film so that it constitutes the mask. When the scene is illuminated with red light and the backing with blue light, the foreground scene on each frame of the mask is red and the backing is blue. This mask is fed through one gate of a projection printer in synchronism with an unexposed panchromatic film which is fed through another gate of the printer. Between a light source and the mask is placed a red filter so that the background area on each frame of the panchromatic film remain unexposed. The panchromatic film and the mask are rewound and again fed through the respective gates and, in synchronism therewith, a positive film bearing a background scene in black and white is also fed through the same gate as the mask. A blue filter is placed in the light path so that the background scene is now exposed on the background areas of the panchromatic film. The latter film, when developed, has depicted on each frame thereof in black and white the combined foreground and background scenes. The backing may be illuminated with white light and the foreground scene with red light so that the mask obtained has, on each frame thereof, the foreground scene depicted in red whereas the backing is a clear white. This mask and a black and white negative film bearing a background scene are fed in frame register through an optical printer together with an orthochromatic film, the mask and negative film are exposed on the orthochromatic film, the latter is developed and a positive print thereof is obtained. This print and the mask are then exposed on to a black and white film which, when developed and printed, has therein the combined foreground and background scenes in black and white. U.S.A. Specification 2,024,081 is referred to.
Patent GB-316232-A (GB)
Title: Improvements in or relating to electrical junction-boxes and the like
IPC: H02G3/08
Filed: 1928-01-26
Abstract: 316,232. Scholes, G. H., Pearce, F. J., and Scholes & Co., Ltd., G. H. Jan. 26, 1928. Ceiling roses &c.- The cable inlets are formed by breaking away weakened portions of the periphery of the flat base of a ceiling rose or other junction-box. Portions 9 nearly severed by grooves 8 in the top or bottom surface of the base 4 are broken away to form openings 10 extending to the periphery where required. A bevelled or rounded edge 12 is provided. The edge of the cover 6 presses on the cables 11 and holds them in place.
Patent GB-607101-A (GB)
Title: Improvements in felt hardening machine
IPC: A42C1/02
Filed: 1946-01-25
Abstract: 607,101. Felt. EVERS, A. J. Jan. 25, 1946, No. 2549. [Class 42(ii)] In a felt-hardening machine having opposed members arranged to press and rub a layer of felt between them, either or each of these members has a felt engaging portion comprising a steam pervious or moisture absorbent coherent body of abrasive grains. The latter may be an artificial abrasive stone, made by bonding particles of silicon carbide, aluminium oxide, emery or the like with a ceramic binder; or naturally occurring stone such as sandstone or pumice; or material made by sintering metallic granules or grits under controlled conditions, or unglazed finely porous pottery or earthenware. A suitable hardening machine comprises upper and lower formers 10, 12 having felt-engaging surfaces 14, 16 formed of an absorptive steam-pervious granular material. The lower member 12 comprises a hollow trough-shaped member 18, the sheet of abrasive material 16 being clamped upon a gasket on the upper edges thereof. Steam is admitted to the interior of the member 12 through a pipe 44 and nozzle 42. The lower assembly is resiliently mounted on springs 30 contained in the hollow standards 32. The upper plate assembly comprises a box-like member 46 having underneath it spaced frame members 48 to which the abrasive sheet 14 is secured by bolts 50 having end lugs cemented in notches cut in the sheet. A spider 54 on the top of the member 46 is pivoted to toggle levers 58 suspended from a fixed support 60. An arm 64 on the member 46 is pivoted to a lug 66. slidable vertically on a bolt 68 on a slide block 72. The latter is reciprocated by means of a crank arm 76 pivoted to the slide and to a crank disc 78 on a drive shaft 80. A rod 62 is provided for lifting the upper member 46.
Patent GB-437859-A (GB)
Title: A process for the production of stable lecithin emulsions
IPC: A61K8/92
Filed: 1935-01-25
Abstract: A stable lecithin emulsion for therapeutic purposes comprises a mixture of vegetable or animal lecithin, fatty oil and water and pine oil, or a mixture of pine oil and oil of turpentine, terpenes or terpineols, with the optional addition of paraffin oil.  The material known as soya sludge obtained in the treatment of soya beans and consisting of an emulsion of lecithin, oil and water may be used in the preparation.  The emulsion is stated to be useful for application to the skin in the treatment of rheumatism and to prevent sunburn.