baber/WOPTO huggingface dataset:
Patent GB-796001-A (GB)
Title: Improvements in or relating to a variable friction gear
IPC: F16H61/664
Filed: 1956-07-20
Abstract: 796,001. Variable-speed friction gearing. BEIER, H. H., BEIER, A., and BEIER, R. July 20, 1956 [July 27, 1955], No. 22594/56. Class 80 (2). In a variable-speed gear with intermeshing friction discs on adjustably-spaced parallel shafts, the adjustment is automatically varied in accordance with the driven load in the sense of opposing the effect on the driven speed of slip between the intermeshing discs. A gear 4 fast on the driving shaft 1 drives gears 5 which are loose on pins 11 and which drive gears 6 fast on splined shafts 7 carrying tapered friction discs 8, the shafts 7 being journalled in swinging brackets 10 pivoted on the pins 11. The brackets 10 are interconnected by rods 12 so as to swing in unison. The discs 8 intermesh with the flanged rims of discs 13 splined on a hollow shaft 14 integral with a front pressure-plate 15 having cam projections 15a co-operating with similar projections on a plate 17 secured to the driven shaft 19, which latter extends through the shaft 14 and has secured to its end a rear pressure - plate 21. Manual adjustment is effected by a hand wheel 25 secured to a screwed spindle 24 carrying a nut 23 connected by a link 22 to one of the brackets 10. The screwed spindle 24 also carries a nut 26, rotation of which is prevented by a withdrawable pin 28, while plate springs 27 tending to urge the spindle 24 to the right in Fig. 2 are arranged between the nut 26 and a part 27a of the casing. The characteristic of the springs 27 may be varied either by withdrawing the pin 28 and turning the nut 26 to adjust its position on the spindle 24 to suit the speed-ratio setting, or by leaving the pin 28 in position so that the axial position of the nut 26 on the spindle is simultaneously varied as the wheel 25 is rotated. The transmission ratio is selected under no-load conditions by rotation of the wheel 25 to adjust the degree of intermesh of the discs 8, 13. At increased load, axial pressure applied to the discs by the cam projections squeezes the discs 8 outwards against the action of the springs 27, so as to counteract the effect on the speed of the shaft 19 of slip between the discs due to the increased load. Specification 671,561 is referred to.
Patent GB-813175-A (GB)
Title: Process for the production of monohalogenated vinyl compounds from ª‡,ª‰-dihalogenated compounds
IPC: C07C69/653
Filed: 1955-08-05
Abstract: Alpha-halogenated carboxylic esters and nitriles are prepared by dehydrohalogenation of alpha : beta-dihalogenated propionic acid esters and propionitriles or homologues thereof having an hydrogen atom in each of the alpha-and beta-positions, by distillation of the dihalogenated compounds in the presence of an organic base containing a tertiary nitrogen atom in the molecule at a pressure below 20 mm. of mercury and at a temperature below the boiling-point of the organic base at the reaction pressure but above the boiling-point of the monohalogenated product at this pressure.  Preferably the dihalogen compound is continuously introduced into the reaction chamber, and in a modification of the above process both the dihalogen compound and the base are continuously introduced into the reaction chamber which is preheated to a temperature above the boiling-point of the product at the reaction pressure and the hydrohalide of the organic base is continuously removed from the reaction chamber in the liquid state together with any excess of the free base.  Examples of tertiary organic bases are quinoline, isoquinoline and homologues thereof, dialkyl- and diaryl-anilines, tertiary naphthylamines and trialkanolamines.  An inert gas such as nitrogen, preheated substantially to the reaction temperature, may be introduced into the reaction chamber, the product then being discharged with the inert gas stream.  Advantageously the process is carried out in the presence of a polymerization inhibitor.  In examples: (1) methyl alpha : beta-dichloropropionate is introduced continuously into a reaction chamber containing quinoline, hydroquinone and copper powder and heated to 96 DEG  to 98 DEG  C., and methyl alphachloracrylate is distilled off at 10 mm. pressure; (2) alpha-chloracrylonitrile is similarly prepared from alpha : beta-dichloropropionitrile, the reaction temperature being 90 DEG  to 95 DEG  C., the pressure about 17 mm. and the polymerization inhibitor hydroquinone alone; (3) alpha-bromacrylic acid is similarly prepared from alpha : beta-dibromopropionic acid, the reaction temperature being 110 DEG  C.; and (4) a mixture of methyl alpha : beta-dichloropropionate and quinoline containing hydroquinone is introduced continuously into a reaction chamber preheated to 105 DEG C. and containing quinoline, copper powder and hydroquinone, and methyl alpha-chloracrylate is distilled off at about 10 mm. pressure, quinoline hydrochloride and quinoline being continuously removed from the reaction chamber.
Patent GB-1510025-A (GB)
Title: Subsurface-fortified glass laminates
IPC: C03C27/10
Filed: 1975-05-23
Abstract: 1510025 Glass laminate CORNING GLASS WORKS 23 May 1975 [12 June 1974] 22702/75 Heading C1M A subsurface-fortified glass laminate comprises a tensilely-stressed core 4; compressively-stressed subsurface-fortifying layers 3, 5; tensilely-stressed outer core layers 2, 6; and compressively-stressed surface layers 1, 7; wherein: (a) the tensilelystressed layers 2, 4, 6 are composed of an alkali metal aluminosilicate spontaneous fluoride opal glass; (b) the compressively-stressed layers 1,3,5, 7 are composed of calcium aluminosilicate glass having a coefficient of thermal expansion at least 15 Î 10<SP>-7</SP>/C. less than that of the glass of the tensile-stress layers (measured at the setting point of the softest glass in the laminate); and (c) the layers 3, 5 are of thickness at least 0À0015 inches, and are spaced at least 0À017 inches from the outer surface of the laminate. The opal glass of the core layers 2, 4, 6 preferably comprises, in weight per cent, SiO 2 , 50-75, Al 2 O 3  3-20, F 3-8, alkali metal oxide 3-20 (where Na 2 O is 1-20 and K 2 O 0-8), the balance, if any, being compatible constituents (CaO, MgO and B 2 O 3  are exemplified). The glass of the compressive-stress layers 1, 3, 5, 7 preferably consists essentially of, in weight per cent, SiO 2  50-65, Al 2 O 3  10-20, CaO 5-25, MgO 0-12, B 2 O 3  0-10, and Li 2 O, Na 2 O, K 2 O, TiO 2  and/or ZrO 2  0-12. The total laminate thickness is preferably at most 0À15 inches (e.g. 0À10-0À11 inches), and the thickness of layers 1, 7 may be about 0À002 inches. The ratio of total thickness of compressive layers to total thickness of core layers preferably does not exceed 1:10.
Patent GB-1157441-A (GB)
Title: Reductive Dimerisation of Unsaturated Nitriles
Inventor: DAVIES DUNCAN SHEPPEY
IPC: C08F20/44
Filed: 1964-06-02
Abstract: 1,157,441. Dimerization of nitriles. IMPERIAL CHEMICAL INDUSTRIES Ltd. 6 May, 1965 [2 June, 1964], No. 22779/64. Heading C2C. [Also in Division C7] The reductive dimerisation of an alpha beta mono olefinically unsaturated nitrile, preferably acrylo nitrile, preferably a partially purified acrylonitrile such as is formed by the interaction of propane, ammonia and oxygen in the presence of a catalyst, is affected by an amalgam reduction system, which may be generated in situ by an electrolytic process, and the said unsaturated nitrile is contained in a medium in which a quantity of alkyl nitrile additional to any generated in situ as a secondary reduction product is present. The reductive dimerisation in the case of acrylonitrile yields adiponitrile. The preferred amalgam is that of an alkali metal, and the reaction medium preferred is aqueous, the pH of the aqueous medium is continuously controlled by the addition thereto of a mineral acid, especially hydrochloric, and the reaction may also be performed in the presence of a sulphonic acid or a sulphonate, or in the presence of a sulphoxide or a sulphone, or tetra-alkyl ammonium ions. The examples describe operation of the process using both electrolytically generated amalgam and preformed amalgam.
Patent GB-414519-A (GB)
Title: Type line composing and printing machines
IPC: G03F1/92
Filed: 1933-08-15
Abstract: 414,519. Printing - machines; typewriters &c. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Schweiz, Lokomotiv- & Maschinenfabrik; 41, Z³rcherstrasse, Winterthur, Switzerland.) Aug. 15, 1933, No. 22795. [Classes 100 (ii) and 100 (iv).] Platen offset machines; machines with types separate for preparing printing - surfaces; hammer-impression arrangements; line-spacing mechanism; roller-inkingarrangements.-Transparent sheets, which are printed on both sides and can be used as pattern sheets for making either intaglio printing-plates or offset printing- plates, are prepared by means of a type-line composing and printing machine employing circulating types or patrices, the composed line being first printed on a resilient printing- surface, and the transparent sheet being then introduced between the type line and the resilient printing-surface, in order to be printed on both sides. Types or patrices, released from a magazine 1, Fig. 4, by means of a keyboard 60, are assembled in a collecting-channel 3, along which they are moved beneath inking- rollers and into printing position by a clamping- device 5. A cylinder 15, Fig. 5, which is movable vertically in guides and carries a sheet 16 of indiarubber cloth, is then lowered into contact with the types by the action of a cam on a shaft 30, so that the types print on the rubber surface. The cylinder is then raised, and a transparent sheet 13, which is secured to a frame 12 by clamping-rollers 14, is moved between the cylinder and the types. The cylinder is then brought down again, so as to print the sheet on both sides. The frame 12, that carries the sheet 13, is supported by a slide 7, Fig. 6, which is reciprocated by rack mechanism or by a lever 45 and a cam. At the end of the stroke of the slide 7, the frame 12 is moved a step for line-spacing by rack and ratchet mechanism operated by a fixed stop 55. The drum also is rotated for line-spacing by ratchet-mechanism operated during the vertical movement of the drum. The printed type line is then distributed, and a new line is composed and printed. The types may be inked by travelling-roller inkers 19<1>, operated by a lever 35 and a cam, and movable over curved guides 67.
Patent GB-1042325-A (GB)
Title: Improvements in the manufacture of tungsten bodies
IPC: C22C1/04
Filed: 1963-06-07
Abstract: Tungsten filament, coil or strip with a cross section consisting of two or more parts each consisting of large crystals and crystallizing independently of one another may be formed by pressing a first layer of tungsten metal powder containing alkali metals, silicon and aluminium, pressing a second layer of tungsten powder containing potassium, silicon, aluminium and iron on the first layer and then processing the composite compact in a conventional manner.
Patent GB-989553-A (GB)
Title: Improved automatic door gear
Inventor: BOOTH MARCUS BAXTER
IPC: E05D15/38
Filed: 1962-07-14
Abstract: 989,553. Automatic door operating gear; releasable fastenings. R. DENTON. Oct. 11, 1963 [July 14, 1962], No. 22829/62. Addition to 968,084. Headings E2A and E2M. The upwardly opening door, e.g. of the "up-and-over" type, described in the parent Specification is modified in that the loaded operating means 14 controlled by the remote control mechanism is adapted to act directly on the counterbalancing means 4 whereby the door is over counterbalanced for obtaining its opening movement. As shown the door 1 is of the "up-and-over" type and is carried by rollers 2 running along tracks 3, and by transverse pins 10 with axis extending horizontally through the centre of gravity running in vertical grooves 9 at each side of the door. The door is partly counterbalanced by a weight 4 just less than the weight of the door and attached to the pin 10 (Fig. 4) by a cord or cable 5 running over a pulley 6, the operating means being one side or both sides of the door. Automatic opening or closing of the door is effected by a lever 17, located outside the door and operating the mechanism by a cable 19, passing around a pulley 21 at the base of the door post and attached to a trigger 13 which releases an additional weight 14 acting on the weight 4 causing over counterbalancing of the door and so effecting automatic opening. The trigger 13 may also be operated by a solenoid with the switch placed at some convenient position outside the door. The door locking devices both in the closed and open positions are released by the cable 19 becoming taut, in the first instance operating a cranked arm 30 to release a keeper 27 just prior to operating the trigger 13 for automatic opening, and for automatic closing, when in the open position, the cable releases a catch 33 from blade spring 34 mounted on an upper part of the door post 22, the door closing under its own weight. Both catches may also be operated by chains 35, 28 connected to the door handle 8. Slamming of the door to the closed position is arrested by arranging the door to lift the additional weight 14 just before closing. As described the door is a one piece "up-and-over" type but the operating gear may be applied to doors of the roller-shutter kind, the cable 5 in this case being attached to the base of the door. Further one or both weights may be replaced by springs.
Patent GB-152497-A (GB)
Title: Improvements in hand-operated valves for pneumatic hammers and like tools
IPC: B25D9/16
Filed: 1919-09-17
Abstract: 152,497. Stevens, C. H. Sept. 17, 1919. Percussive hand tools.-In a percussive hand tool, the tubular throttle valve E, with lateral ports F, has a head G with a transverse hole engaged by the bent end II<1>of a push-rod H arranged in a separate passage and contracting with the trigger K. In a modification, the valve head G has an annular groove engaged by a forked end on the push-rod.
Patent GB-517640-A (GB)
Title: Improvements in or relating to the production of pigmented bases for the production of lacquers, plastics and the like
IPC: C09D101/26
Filed: 1938-08-02
Abstract: 517,640. Pigmented cellulose ether compositions. BINNEY & SMITH CO. Aug. 2, 1938, Nos. 22889 and 22890. Convention dates, Aug. 2, 1937, and Aug. 4, 1937. [Class 2 (ii)] Pigmented bases for use in the manufacture of lacquers, paints, plastics and the like, are prepared by dispersing a pigment in a medium containing one or more cellulose ethers with the aid of one or more salts of nickel, iron, cobalt, calcium, barium, or strontium soluble in the medium. The salts used may be salts of salicylic acid, of naphthenic acids, or of long chain fatty acids such as oleic and palmitic acids, while pigments mentioned are carbon black, chrome green, titanium dioxide, maroon lake and Prussian blue. Cellulose ethers mentioned are methyl, ethyl, butyl, benzyl and glycol celluloses. In examples, the cellulose ether, metal salt, and pigment are mixed with a solvent such as xylene, toluene or the hydrogenated petroleum hydrocarbon derivative known as " Solvesso " and a plasticizer such as linseed oil fatty acids, dibutyl phthalate or tricresyl phosphate, the mixture being then kneaded and rolled into sheets. The fairly dry sheets are broken into chips or flakes which may be mixed with a solvent to form a solution or paste. Examples are given of coating compositions produced from the pigmented bases which contain film formers such as nitrocellulose or synthetic resins, thinners such as butanol or ethyl, butyl, or amyl acetates, drying oils such as linseed or chinawood oil etc. U.S.A. Specification 2,045,006 is referred to.
Patent GB-185322-A (GB)
Title: Improvements in and relating to wrenches
IPC: B25B13/22
Filed: 1921-08-29
Abstract: 185,322. Tumulla, P. J. Aug. 29, 1921. Sliding-jaw wrenches; jaw faces and attachments.-In wrenches of the kind in which the sliding jaw 6 is locked in adjusted position by a lever 9 pivoted in a recess therein and provided with serrations 12 adapted to engage serrations 4 on the shank 2 the jaw 6 is made in two parts, a cover-plate 7, Fig. 3, being bolted to the main part 5 and abutting against a shoulder 8 thereon. The lever 9 is loosely mounted on its pivot pin 11 to facilitate unlocking, and its rounded end abuts against a corresponding recess 13. A pivoted detachable jaw-face 14 is provided, its pivot pin 15 engaging a hole in the part 5 and a corresponding hole in the plate 7.
Patent GB-305643-A (GB)
Title: Improvements relating to electrically heated vessels and the like
IPC: A47J27/00
Filed: 1928-08-08
Abstract: 305,643. Harrison, T. M. Feb. 10, 1928, [Convention date]. Heating by electricity.-Round the lower edge of electric kettles &c. having the bottom integral with the sides a metal ring is secured by swaging to form a. housing and securing means for the heating units. In the arrangement shown the kettle is formed with a projection 5 to which the ring 4 is swaged. The heating units, which may be of wire wound on and insulated by mica, are held against the bottom the kettle by a clamping- plate 14, an insulating disc 15 and an outer clamping plate 16. The plate 16 is secured by levers 18 engaging with openings 6 in the ring 4 and held by a disc 19 pressed against the ends of the levers by a nut 21 on a central bolt 17 attached to the plate 16.
Patent GB-945006-A (GB)
Title: Improvements in or relating to densimetric separation
IPC: B03B5/34
Filed: 1960-06-30
Abstract: 945,006. Densimetric separating processes. PREPARATION INDUSTRIELLE DES COMBUSTIBLES. June 30, 1960 [Oct. 14, 1959], No. 22959/60. Heading B2H. A dense medium washing plant, for a float and sink separating process wherein the specific gravity of the dense medium, e.g. finely crushed magnetite suspended in water, can be instantaneously increased, includes a washing circuit with a densimetric separating apparatus and a circulation can, and a recovery circuit, in which a cyclone connected to the washing circuit is arranged to be fed by the circulation can to feed its bottom discharge to the can to raise the specific gravity of the medium, and to feed its overflow to the recovery circuit. As shown, the medium passed through the draining device 1 is led into the can 2 whence it is returned by pump 3 to the washing unit 10. A densimeter 4 connected between the pump outlet and the can inlet serves to measure the specific gravity of the medium and to control a valve 5 for regulating the supply of replenishment water to the can when the medium becomes too dense. The medium is also led through a valve 6, auto- , matically controlled by the densimeter, to the cyclone 7. The draining device 1 may be associated with a spraying device 8, the output from which is connected to the recovery circuit.
Patent GB-188121-A (GB)
Title: Improvements in carburettors for internal combustion engines
IPC: F02M19/03
Filed: 1921-08-30
Abstract: 188,121. Emtage, E. L. M. Aug. 30, 1921. Spray carburettors.-The concentric slow - running nozzle 1 and main nozzle 6 are supplied with fuel from a float chamber or reservoir through orifices 9, 10 in parallel, the slow-running nozzle 1 receiving fuel also from the main nozzle through an orifice or orifices 8 in series with the crifice 10. The main nozzle mav be furnished in known manner with a perforated diffuser tube 2 and guard tube 3. When the slowrunning nozzle alone is in action it is ted both in series and in parallel with the submerged orifice 10 supplying the main nozzle, but when the main nozzle 6 is operating sufficiently to cause the hole or holes 8 to be uncovered, the slowrunning nozzle is fed in parallel with the orifice 10 only.
Patent GB-160405-A (GB)
Title: Improvements in mascots for use on vehicles
IPC: B60R13/00
Filed: 1920-08-04
Abstract: 160,405. Baron, S. Aug. 4, 1920. Optical toys; wind-propelled toys.-A mascot for use on vehicles comprises a ring a, which may represent a tyre, within which is pivoted a rim c across which extends diagonally a disc d causing the rim to revolve under the action of air currents. The disc d bears on each face a represeniation of an object in two different configurations, which gives the appearance of a moving object when the disc rotates. The lower pivot g of the rim is adjustable by means of a set-screw h.
Patent GB-733466-A (GB)
Title: Improvements in or relating to superheterodyne radio receivers
IPC: H03J5/24
Filed: 1953-08-21
Abstract: 733,466. Superheterodyne circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 21, 1953 [Aug. 26, 1952], No. 23110/53. Classes 40 (5) and 40 (6). Improved tracking is obtained by employing a gang condenser in which the section tuning the oscillator circuit is of greater capacity than that tuning a signal-frequency circuit. As applied to a receiver operating in a number of lower-frequency ranges and also one ultrahigh-frequency range, a gang condenser having two equal sections of larger capacity, 6, 18, Fig. 2, and two of smaller capacity 31, 33, is used. When, as shown, on the lower-frequency ranges, the range is selected by ganged switches 5, 21, 22, the input to the triode-hexode mixer 7 coming from circuits 3 or 4 which are tuned by condenser section 6. The corresponding oscillator circuits 14, 15 are tuned by sections 18, 31 in parallel, tracking being attained by means of condensers 16, 17. For the ultra-high-frequency range switches 19, 20, 23 are reversed: the mixer 7 then obtains signal input from a high-frequency stage 27, the output circuit of which is tuned by condenser section 33. The oscillator circuit is modified to one of the Colpitts type and comprises coil 30 tuned by condenser 31, a series condenser 32 completing the circuit.
Patent GB-301545-A (GB)
Title: A process for the manufacture of 8-hydroxy quinoline and derivatives thereof
IPC: C07D215/26
Filed: 1927-09-02
Abstract: 301,545. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). Sept. 2, 1927. 8-Hydroxyquinoline and its derivatives are prepared from 8-aminoquinoline and its derivatives by heating with acid reagents. In examples 8- hydroxyquinoline is obtained by heating 8-aminoquinoline with sulphuric acid, 6: 8-dihydroxyquinoline from 6 hydroxy-8-amino quinoline and from 6-methoxy-8-aminoquinoline by heating with either sulphuric acid or alcohol and aqueous zinc chloride or the hydrochloride of the base is heated in aqueous solution. 6-Hydroxy-8-aminoquinoline is obtained by heating 6-methoxy-8-aminoquinoline with hydrobromic acid. Specifications 267,457 and 275,277 are referred to.