baber/WOPTO huggingface dataset:
Patent GB-611662-A (GB)
Title: Improvements in dyeing
IPC: D06P3/78
Filed: 1946-05-03
Abstract: Acrylonitrile polymer filaments, films and the like are made from a polymer having a molecular weight within the range 15,000 to 250,000 (Staudinger equation), prepared, for example, by polymerizing a 5 per cent aqueous solution of the monomer at 3 DEG  to 5 DEG  C. in the presence of 4 per cent of ammonium persulphate catalyst.  Yarns may be prepared by spinning a solution in dimethyl formamide of polyacrylonitrile, having a molecular weight of 120,000, into glycerol at 140 DEG  C. and subjecting the yarn to a tension of 1.2 grams per denier.  The yarn is washed to remove the glycerol and dyed whilst still in the gel state.  Specification 404,504 is referred to.ALSO:Filaments, films and the like composed of acrylonitrile polymer are dyed by treating them, preferably in a gel state, with a Naphtol first component, subjecting them to treatment with an aqueous acid solution, and thereafter applying a coupling component.  The acid used in the aqueous acid solution preferably has an ionisation constant of not less than 2X10-5 and the concentration of acid is between 1N and 2N.  In an example: (1) polyacrylonitrile yarn in the gel state is immersed in Naphthanil AS, dissolved in aqueous caustic soda in the presence of the sodium salt of triisopropyl naphthalene - sulphonic acid and diluted with water, squeezed, immersed in 10 per cent aqueous sulphuric acid solution, rinsed, and immersed in a solution of Naphthanil diazo Scarlet G.G.  In examples (2), (3) and (4), the sulphuric acid solution is replaced by 2N hydrochloric acid, 2N acetic acid, and 0.5N acetic acid, respectively.  In example (5), instead of Naphthanil AS and Naphthanil diazo Scarlet GG the following are used: (a) Naphthanil ASD and Naphthanil diazo Orange GC, (b) Nephthanil AS-BG and Naphthanil diazo Scarlet GG, (c) Naphthanil AS-BO and Fast Red Salt B, and (d) -naphthol and Naphthanil diazo Scarlet GG.  In example (6) the same yarn in the gel state is treated with a solution containing hydrogen peroxide and sodium hydroxide in order to bleach the yarn and partially to hydrolyse the nitrile groups, and then dyed as in (1), (7) the first example is repeated, but coupling is carried out at 50-60 DEG  C., (8) the acid treatment in (1) is carried out with 10 per cent sulphuric acid at 35 DEG  C., and (9) the first example is repeated, using 0.5N and 2.0N aqueous boric acid solutions at 25 DEG  and 50 DEG  C., respectively, whereby lighter shades are obtained.  The acrylonitrile polymer preferably has a molecular weight within the range 15,000 to 250,000 (Staudinger equation) and may be prepared for example by polymerizing a 5 per cent aqueous solution of the monomer at 3 DEG  to 5 DEG  C. in the presence of 4 per cent of ammonium persulphate catalyst.
Patent GB-400870-A (GB)
Title: Manufacture of dyestuffs
IPC: C09B51/00
Filed: 1933-05-10
Abstract: p-Aminodiphenylamine or its homologues or substitution products are condensed with 2-alkoxy-3 : 5-dinitro- or 4-alkoxy-3 : 5- dinitrobenzoic acids or alkyl esters to give dyes which yield yellow-brown to red-brown fast shades on animal fibres. Condensation may be conducted in a suitable solvent or diluent with or without the addition of an acid-binding agent such as sodium acetate, sodium carbonate, calcium carbonate, magnesium oxide.  In examples: (1) 4-aminodiphenylamine-2-sulphonic acid is condensed with 4- and 2-methoxy-3 : 5-dinitrobenzoic acids (prepared by nitrating p- and o-methoxybenzoic acids); (2) 4-amino-diphenylamine is condensed with the methyl or ethyl ester of 4-methoxy-3 : 5-dinitrobenzoic acid. The use of the following derivatives of 4-aminodiphenylamine is also specified: 2 - sulpho - 4<1> - methyl, 2 - sulpho - 2<1> - carboxy, 2-carboxy, 2-sulpho-4<1>-methoxy-, 2-sulpho-2<1>-methoxy, 2-sulpho-4<1>-hydroxy-, and 4<1>-sulpho.  Specification 279,133, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-328794-A (GB)
Title: A new or improved anti-dazzle device for the headlights of motor road vehicles
IPC: F21V7/00
Filed: 1929-05-02
Abstract: 328,794. Mortimer, C. May 2, 1929. Vehicle lamps.-In a vehicle lamp a small convex refiector 5 is arranged in front of a central aperture 4 in a concave reflector 1, 2 so that all the direct rays of light from the filament 3 of an electric lamp bulb concealed behind the concave reflector, and in alignment with the aperture and the convex reflector, which pass through the aperture are reflected by the convex reflector on to the concave reflector when they are reflected in a forward direction. The filament is preferably straight and arranged longitudinally of the lamp, and the convex reflector is carried by a horizontal cross-bar arranged centrally across the front of the convex reflector. The rays of light from the front and rear ends 6, 7 of the filament which strike the upper half of the convex reflector are reflected on to the upper half 1 of the concave reflector and are then reflected forwardly horizontally, and forwardly downwardly, respectively. The lower half 2 of the concave reflector is preferably formed with a longer radius of curvature than the upper half 1 so that rays of light from the front and rear ends of the filament which strike the lower half of the convex reflector are reflected on to the lower half of the concave reflector and are then reflected forwardly downwardly, and forwardly horizontally, respectively. Alternatively the concave reflector may be symmetrical and the convex reflector formed with two reflecting surfaces of different radii of curvature to produce a similar effect.
Patent GB-693497-A (GB)
Title: Process for simultaneously dyeing and stabilizing textile fabrics against shrinkage
Filed: 1950-06-01
Abstract: Textile fabrics predominantly of regenerated cellulose, are dyed and simultaneously stabilized against shrinkage and stretching by impregnating them with an aqueous medium having a pH of 1.2 to 6.5 and containing a water-insoluble, alkali-soluble cellulose ether, e.g. hydroxyethyl cellulose, a vat dyestuff, formaldehyde, a strong mineral acid and an alkali metal salt thereof, drying and heating the impregnated fabric in the absence of pressure to convert the formaldehyde to the insoluble form, treating with an aqueous alkaline solution of a reducing agent, e.g. sodium hydroxide and sodium hydrosulphite, to reduce the dye to the leuco form and finally treating with an aqueous solution of an oxidizing agent, e.g. aqueous sodium perborate, to regenerate the dye on the fabric.  The aqueous medium is preferably prepared by mixing the cellulose ether, the dyestuff and formaldehyde with an aqueous solution of sodium, potassium or lithium hydroxide and then adding a mineral acid pH regulator, e.g. sulphuric acid. Impregnation, drying and heating may be effected with the fabric under tension, drying being preferably effected at 200-240 DEG  F. and heating at 300 DEG -350 DEG  F., the latter operation being preferably effected by blowing with hot air. To the aqueous medium plasticizers, e.g. ethylene glycol monobutyl ether, the partial esters of sorbitol, mannitol, glycerol or glycol with stearic, oleic, myristic or lauric acids or a mixture of sorbitan monopalmitate and sorbitan tristearate which has been condensed with ethylene oxide, may be added.
Patent GB-723682-A (GB)
Title: A machine for cutting or slicing potatoes and the like
IPC: B26D1/43
Filed: 1953-08-31
Abstract: 723,682. Slicing potatoes. SHEPHARD, H., and FITZGERALD, M. B. Aug. 31, 1953. [May 30, 1952] No. 13750/52. Class 5 (1).  Potatoes in an openwork hopper 16 fall down in front of a ring of reciprocated rams 10, which press them against cutters located in slots in a hollow rotated drum 1, whereby the thin slices cut off pass inside the drum and fall through a shoot 39 to a receptacle. The waste pieces fall through slots 40 and through a shoot 42. A shield plate 18 attached to each ram 10 prevents potatoes falling behind the ram. A lug 19 on the shield plate engages stops 22, 23 at the end of each stroke of the ram whereby the valve control rod 20 operates in the reversing valve chamber 21 to direct compressed air through pipes 26, 27 in turn behind and later in front of the piston operating the ram 10 to cause it to reciprocate. The potatoes are distributed to the shield plates 18 by inclines of spaced bars 37 located at the lower part of the hopper 16 and ,between the cutting stations. To hold the potatoes against rotation on the cutters the rams are concave and provided with spikes. The cutters are adjustable in their slots (Fig. 3) to set the thickness of the slices. The axis of the drum 1 may be inclined to the vertical. A motor 7 drives the cutter drum 1. A ring pipe 24 delivers compressed air to each of the reversing valves 21 which actuate the rams 10.
Patent GB-344285-A (GB)
Title: Improvements in collapsable barrels
IPC: B65D8/02
Filed: 1930-05-06
Abstract: 344,285. Collapsable barrels. CHELL, W., 29, Bridgford Road, West Bridgford, Nottinghamshire. May 6, 1930, No. 13851. [Class 21.] The ends of the hoops A, Figs. 1 and 6, of a collapsable barrel, e.g. for solid or semi - solid substances, are secured together by turn-buttons B at one end engaging openings C at the other, rotation of the turn button serving to tighten up the hoops. The buttons may be cam-shaped with grooved edges. Rolling studs N are provided on the hoops. Midway between the free ends of the hoops a hinged link E is inserted so that the barrel may be folded flat as shown in Fig. 6. with the heads J enclosed, the hoop ends being secured by the buttons B and openings C. The edges of the staves may make butt joints, rabbeted joints or tongue and groove joints with each other.
Patent GB-165808-A (GB)
Title: Improvements in canopies for perambulators and other like carriages
IPC: B62B9/14
Filed: 1918-08-27
Abstract: 165,808. Dunkley, W. H. Aug. 27, 1918. Hoods.-A canopy for perambulators &c. comprises a series of ribs 1 which in the unfolded position radiate from central plates j, k on an arched rod c pivoted 'at e to the sides of the vehicle body. A pocket l, Fig. 6, may be provided at the end of the body k to receive the canopy when folded. The rod c may be held in the raised position by a screwed pin passed through an arm d extending from the rod. Side wings may be attached to the canopy and fold up therewith. A canopy arranged to fold as described may be disposed at each end of a double perambulator. According to the Provisional Specification, the canopy rod may be inclined by means of a rack and pinion.
Patent GB-162551-A (GB)
Title: Improvements in and connected with collapsible stands for supporting or displaying calendars, menu cards, advertisements, wearing apparel and other suitable articles
IPC: A47F5/11
Filed: 1920-05-20
Abstract: 162,551. Stubbs, W. P. May 20, 1920. Card and like stands.-A collapsable stand for supporting and displaying calendars, menu cards, advertisements, wearing-apparel, &c. is made of two thicknesses of material and when collapsed fcrms a flat article. Fig. 2 shows a stand formed by creasing and bending a single piece of cardboard or similar material, two parts of which are secured together face to face to form the body part 14 while the upper and lower parts are creased and bent to form a top 18 and a base 24 of the form shown, the article supported being inserted in the cut-away part 19 of the top 18. The parts are held in the extended positions shown by a strut 26 and tongues 25 integral with the base 24 and inserted between the thicknesses of the upright body part 14 of the stand. When the stand is used for supporting menu cards, calendars, and other flat articles the top 18 is omitted. In a stand for displaying collars &c. the top edges of the stand are cut at an angle, splayed, and split to enable them to be bent in various directions.
Patent GB-1339774-A (GB)
Title: Valves for fluids
IPC: F16K17/10
Filed: 1971-05-10
Abstract: 1339774 Pilot-operated relief valves SPERRY RAND CORP 10 May 1971 [20 May 1970] 13954/71 Heading G3P A pilot valve member 25 responding via 22a, 40 to the line pressure adjacent main relief valve member 19 is biased on to seat 24 by a spring 26 the setting of which is adjustable by a plunger 27 the central land 32 of which is responsive to the pressure drop across temperaturecompensated restrictor 46 when fluid flows from the main line via 29, 30, 33 to nozzle 36. Pressure downstream of restrictor 46 is controlled by a flapper 37 biased by feedback spring 26a on to the nozzle 36 and responsive to a control signal applied to coil 38. The control signal thereby determines the pressure at which the main valve member will be unseated. When the pilot valve member is unseated, fluid above piston 22 is exhausted via restrictor 43 and passage 41 so that the end lands 31, 34 of plunger 27 respond to the pressure drop across the restrictor 43 to ensure that the pilot valve closes at a lower pressure than that at which it opened.
Patent GB-121104-A (GB)
Title: Method of and Apparatus for Making Metal Cylinders, Closed at One End and Provided with a Collar.
IPC: B21K21/00
Filed: 1918-08-28
Abstract: 121,104. Schneider et Cie. May 6, 1918, [Convention date]. Engine cylinders.-Flanged motor cylinders of the form shown in Fig. 1 are forged by the action of two concentric punches E, F, Fig. 3. The punch E first descends alone for the distance h, piercing the heated blank L, and the two punches then descend together until the flange F<1> of the punch F rests on the top of the mould C. During this movement, the flange B is pressed upwards between the two punches, forming the part A of the cylinder. A distance-piece H is then re'- moved, and the punch E descends to compLete the piercing, the cylinder walls A<1> and the Range B, with the punch F resting upon it, being pressed upwards. A ring G ensures the concentricity of the punches.
Patent GB-461694-A (GB)
Title: Improvements in or relating to the cylinder heads of internal combustion engines and a method of igniting explosive charges therein
IPC: F02B19/12
Filed: 1935-05-13
Abstract: 461,694. Sparking-plugs. STEVENS, A. H. (Economy Engineering Corporation) May 13, 1935, No. 14022. [Classes 7 (ii) and 7 (iv)] The charge, compressed in the main combustion chamber of an engine cylinder having a compression ratio of more than 3À75 to 1, is ignited by flame from an auxiliary chamber 11, in which the sparking-plug 15 is located, the chamber 11 having a capacity between 0À0012 and 0À006 of the total cylinder capacity, and being formed so that its wall-temperature is maintained at a temperature slightly below the self-ignition temperature of the charge. This wall-temperature, which is preferably not less than 500 to 600‹ F., may be maintained by a thermally or manually operated device or by careful design. The chamber 11 may be formed in the cylinder head casting or in a separate fitting 10 made of bronze or copper ; it may be cubical, spherical or cylindrical in shape, dimensions for specific engines being given ; it, preferably, has one or more Venturi mouths 17 which may be inclined as shown in Fig. 2. A thermal control is shown in Fig. 5 in which a separate fitting 10, comprising the chamber 11, is insulated by an asbestos packing 22. Cooling fins 14 are surrounded by a pair of cylindrical casings 26, 27, fixed and mounted on ball bearings 23 respectively ; these casings have hit-and-miss ports, and are controlled by a thermal device extending through the space round the fins 14, so as to be affected, more or less, by a stream of air from the radiator or other fan. In Fig. 9, the temperature of insulated auxiliary chambers in a four-cylinder engine is regulated by placing a casing 30 over the sparking-plugs ; a thermally-controlled valve 36 regulates the supply of cooling air, exit ports 38 being provided over each sparking- plug. Specifications 141,877 and 216,391, [both in Class 7 (iv)], are referred to.
Patent GB-528769-A (GB)
Title: Improvements in or relating to percussive tools
IPC: B25D11/10
Filed: 1939-05-11
Abstract: 528,769. Percussive drills. COLLINS, C. M., and HENDERSON, W. M. May 11, 1939, No. 14034. [Class 124] In a percussive tool with self-contained motor the hammer 2 is raised by cam action against a plurality of parallel compression springs 7 which effect the working stroke and to obviate damage to the cam gear in the event of the tool 17 meeting no resistance a shock absorbing washer 19 is struck by a collar 18. The washer is comprised of several layers of composite belting or the like. The engine 1 has a change speed gear 23 driving the shaft 4 through chain and sprocket gearing and is mounted in a casing the whole tool being supported on road wheels 21.
Patent GB-387198-A (GB)
Title: Zip fastener
IPC: A44B19/16
Filed: 1932-05-17
Abstract: 387,198. Sliding-clasp fasteners. FIELITZ, 0., 49, Koppenstrasse, Berlin. May 17, 1932, No. 14076. Convention date, May 15, 1931. [Class 44.] A sliding-clasp fastener comprises wire elements a or a continuous wire fabric or gauze element, having eyes a<1>, a<2> threaded on cords b, b<1> respectively to form an elastic clamping band. The band is formed with lateral clamping grooves a<4>, a<5>, the one a<4> being permanently clamped on the seam i of one stringer i<1>. The seam h of the other stringer h<1> is introduced into the groove a<5> by a slider comprising plates c, d embracing a set of eyes a<2> and connected by a slotted tube e. The seam h is guided into or out of the groove as by the tube e. The eyes a<2> defining the groove a<4> are provided with hooked ends a<3> adapted positively to engage the seam i which is of square cross-section. The seam h is of circular cross-section. The slider has a pull-bow f, g.
Patent GB-200975-A (GB)
Title: Improvements in automatic feeding devices for power presses or other machines
IPC: B30B15/30
Filed: 1922-05-18
Abstract: 200,975. Smith, A. H. May 18, 1922. Variable-speed ratchet gearing. - The ratchet wheel 13 of an automatic feed device designed chiefly for feeding strip material to power presses, is actuated by pawls 12 carried by a lever 10 which is oscillated by an expansible connecting-rod 1. The connecting-rod is provided with a sleeve 3 in which is telescopically mounted the end 1<a>, a compression spring A being interposed between the two parts and a pin and slot 5, 6 being provided to limit the relative movement of the end 1<a>. The angular movement of the lever 10 may be regulated independently of the crank adjustment by setting a screw stop 16 carried in a fixed bracket 15. Specification 186,395, [Class 83 (iv), Metals, Working], is referred to.
Patent GB-1325085-A (GB)
Title: Corrosion inhibiting compositions
IPC: C02F5/10
Filed: 1971-05-11
Abstract: 1325085 Corrosion- and scaleinhibition DREW CHEMICAL CORP 11 May 1971 [13 May 1970] 14233/71 Heading C7E A corrosion- and scaleinhibition composition for use in aqueous systems comprises (a) at least one water-soluble metal salt containing a zinc or cadmium metal ion or a mixture thereof (b) at least one ligno-sulphonate-mixed sugar aldonates polymeric material and (c) at least one sugar acid chelant, polycarboxylic acid chelant and /or alkyl phosphonic acid chelant. Component (a) may be 1-10% (as metal ion) of a halide, sulphate or nitrate, (b) may be "chelig 32" or "LS 350" in amount 15-90%, and (c) may be Na heptagluconate, EDTA, amino trimethylene phosphonic acid or its Na salt or nitrilotriacetic acid in amount 0À5-25%; the composition is diluted in water to give 2-50 ppm of (a), 0À5-100 ppm of (b) and 0À1-25 ppm of (c); the water may contain ethylene glycol, and the system to be protected may be Cu, steel and/or Al; where Cu is present, 0À1-10 ppm of a Cu-corrosion inhibitor such as  diethyldithiourea, mercaptobenzothiazole or benzotriazole may be added.
Patent GB-977028-A (GB)
Title: Improvements in or relating to synchronising apparatus for television cameras
Inventor: JAMES JOHN FREDERICK
IPC: H04N5/073
Filed: 1961-04-20
Abstract: 977,028. Automatic phase control systems. MARCONI CO. Ltd. March 27, 1962 [April 20, 1961], No. 14296/61. Heading H3A. A remote television camera installation comprises an oscillator T1, controlling line scan, which transmits by cable K1 to a control station a signal for phase comparison with line drive signals at the control station, in a phase detector C2 whose D.C. output is sent by cable to the remote oscillator T1 to control its frequency and phase so that the oscillator signal received at the control station is of constant phase irrespective of distance and transit time from the camera, and switching in of programmes from different cameras thereby facilitated. The oscillator may operate at a multiple of the line frequency, and followed then by a frequency divider. A fixed delay unit C3 may be included in the cable K1. T5 denotes an amplifier for the camera tube T4, and C4 the control station amplifier.
Patent GB-412030-A (GB)
Title: Improvements in and relating to electric mixing machines
IPC: A47J43/044
Filed: 1933-05-17
Abstract: 412,030. Drink mixers. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and STRETTON, A. T., 120, Lower Hillmorton Road, Rugby. May 17, 1933, No. 14301. [Class 86.] A drink mixer driven by an electric motor which is started by placing the tumbler into posi tion is furnished witl a spring-controlled pivoted member 7 having a resilient ex tension 6 which operates the push button starting switch 5. A resilient packing 3 is placed between the motor and standard. In a modification, the member 7 is operatec by the bottom of the tumbler.
Patent GB-1522072-A (GB)
Title: Process for the production of soluble high molecular weight polyurethanes which are free from isocyanate groups
IPC: C08G18/08
Filed: 1976-04-08
Abstract: 1522072 Polyurethanes BAYER AG 8 April 1976 [10 April 1975] 14309/76 Heading C3R Polyurethanes which are soluble in organic solvents are prepared by reacting a dihydroxy compound of M.W. 500 to 5000, and optionally a compound having two isocyanate-reactive groups and a M.W. of 32 to 400, with a diisocyanate at an NCO/active hydrogen group ratio of 0À92 : 1 to 1À0 : 1 in the presence of a solvent in such a way that (a) the total quantity of diisocyanate is added at 100 to 150 C. to the dihydroxy component optionally dissolved in 0 to 50% of the total quantity of solvent and optionally in the form of a mixture with the other isocyanate-reactive compound, so that a starting temperature of from 20 to 60 C. above the specific reaction temperature (defined) is reached as a result of the heat liberated by the reaction; (b) the reaction is carried out at this starting temperature until the reaction mixture reaches a viscosity of from 7000 to 20,000 cP after which; (c) the remaining 100 to 50% of inert solvent which is at a temperature of from 0 to 110C. is added either in stages or continuously over a period of from 0À5 to 6 hours in such a way that the viscosity remains within the range 7000 to 20,000 cP, the reaction mixture being simultaneously cooled; (d) the reaction mixture is optionally stirred at the specific reaction temperature until no further reaction takes place and the maximum viscosity has been reached; (e) when there is no sign of any further increase in viscosity, the resulting reaction mixture containing 30 to 70% by weight, of polyurethane is cooled to 80 to 100 C. with a temperature gradient of 2 to 10 C./hour and (f) the resulting polyurethane is recovered by removing the solvent.
Patent GB-454038-A (GB)
Title: Improvements in safety razors
IPC: B26B21/28
Filed: 1935-05-16
Abstract: 454,038. Safety razors. SPINKS, G. L., 72, Wheturangi Road, Green Lane West, Auckland, New Zealand. May 16, 1935, No. 14336. [Class 30] In razors of the type in which the head is set at an acute angle to the handle, the outer faces of the comb teeth D are parallel to the handle as seen in end elevation.