baber/WOPTO huggingface dataset:
Patent GB-738498-A (GB)
Title: Improvements in or relating to torque converters
IPC: F16H3/44
Filed: 1952-08-01
Abstract: 738,498. Variable-speed gearing. BUTLER, J. R. Oct. 29, 1953 [Aug. 1, 1952]; No. 19579/52. Class 80 (2). An input shaft 11, Fig. 1, drives the carrier of a bevel differential gear, the side wheels 14, 15 of which are connected to the sun 18 and annulus 20 respectively of a spur epicyclic gear, the carrier 23 of which is connected to the output shaft 24, and a controllable hydraulic clutch 19, 25 is arranged between sun 18 and shaft 24 (as shown) or shaft 11, or between annulus 20 and shaft 11 or shaft 24. Additional epicyclic trains may be fitted, each having planets meshing between the annulus 20 and a sunwheel fixed to the preceding carrier. The clutch 19, 25 may be of piston-and-cylinder type, with a controlled delivery valve. Such control may be effected by a spring-loaded pedal so that the valve is fully open when the pedal is partly depressed, full depression also disengaging a main clutch between the power source and shaft 11. Alternatively, the control may be automatic by output load and speed. A rod 26, Fig. 2, operated by the load-responsive device controls a spring-loaded lever 28 controlling a spring-loaded arm 34 on the control valve spindle 35, the pivot 29 of lever 28 being on an arm 30 controlled by a cam arm 47 operated through a rod 45 by the speedresponsive device. The parts normally occupy the positions shown, with the arm 34 held against a stop 38 and the valve in a partiallyopen position such that the gearing gives maximum reduction. Increase in speed or reduction in load allows the valve progressively to close. A further rod 39 operated by the speed-responsive device acts through a lever 41 to hold arm 34 against stop 38 below a predetermined speed.
Patent GB-691976-A (GB)
Title: Improvements in optical objectives
IPC: G02B9/12
Filed: 1950-08-04
Abstract: 691,976. Objectives. BERTELE, L. J. Aug. 4, 1950 [Sept. 8, 1949; Sept. 8, 1949], No. 19583/50. Class 97 (i). An objective comprises a front simple positive lens L1 separated by an air space in the form of a divergent meniscus convex towards the front from a triplet which is a meniscus convex towards the front and is itself separated from a positive doublet by an air space in the form of a converging lens of which the surface r6 is the more strongly curved. This objective is characterized in that the refractive index of the positive lens L6 of the doublet is greater than that of the negative lens L5 by at least 0.165 and in that the radius of curvature r8 of the contact surface of the doublet is between 0.38F and 0.50F, where F is the objective focal length. Preferably, the sum of the refractive indices of the lenses L1 and L2 is greater than 3.325. The front and middle elements L2, L3 of the triplet may be left uncemented in which case the adjacent surfaces of these elements may differ in curvature by not more than 40 per cent of the reciprocal of the focal length F. Optical data are given for two examples. Specification 692,013 is referred to.
Patent GB-1083798-A (GB)
Title: Apparatus for melt spinning textile fibers from linear thermoplastic polymers
IPC: B29C48/76
Filed: 1966-05-04
Abstract: 1,083,798. Melt spinning apparatus. LAVORAZIONE MATERIE PLASTICHE L.M.P. S.p.A. May 4, 1966 [May 4, 1965], No. 19689/66. Heading B5B. A device for removing gases and vapours from the stream of melt flowing from a melter to a spinning pump comprises a screw pump 10 depicted diagrammatically in Fig. 1 having two closely intermeshing screws 11, 12 depicted in Fig. 2 which rotate in the same sense in a common barrel or housing 13, the clearance between the screws and the inner surface of the barrel being so small as to be sealed by the melt in the clearance. The screws 11, 12 each comprise sections 14, 14A respectively having a relatively coarse pitch, which sections alternate with sections 15, 15A; 16, 16A having a relatively fine pitch. Molten polymer is fed to the coarse pitch thread section A of the screw pump (Fig. 1) from a melting device 18 and is conveyed by the screws 11, 12 of the pump to the pump outlet 17. A conduit 19 extends from each of the coarse pitch thread sections D, D<SP>1</SP> of the screw pump to a zone (not shown) maintained at subatmospheric pressure and a conduit 19A extends from a space 27 in the rear end of the screw pump housing between the screw shaft and the housing (depicted in Fig. 3) to a zone also maintained at subatmospheric pressure and preferably separate from the other subatmospheric pressure zone. The screw pump housing is provided in the usual manner with a heating jacket (not shown). The conduit 19A communicates with the space 27 through the connection 20 (Figs. 3 and 4) which is provided with an electrical resistance heating jacket 21. Entry of melt into the connection 20 is prevented by the fine pitch thread section of the screws 11, 12 in the section B of the screw pump (Fig. 1). The screws 11, 12 are driven by two shafts one of which is shown at 25 and which is coupled to the screw 12 by a connector 26. Both shafts extend through a casing 28 mounted on the rear end of the screw pump housing 13 provided with a gland assembly 29 to 32 surrounded by a cooling jacket 34.
Patent GB-1415856-A (GB)
Title: Process for separating cryolite and carbon
IPC: C01F7/54
Filed: 1972-04-27
Abstract: 1415856 Recovery of cryolite DUTTON WASTE RECOVERY Ltd 27 April 1973 [27 April 1972] 19737/72 Heading C1A [Also in Division F4] A cryolite carbon mixture from the linings of electrolytic aluminium pots is crushed at 3 and 5 and fed to a fluidized bed 10, supplied with fluidizing air and fuel gas. The temperature of the bed is maintained below the melting temperature of the cryolite by a cooling pipe 13 immersed in the bed, and the cryolite is removed by a conveyer 14. Cryolite dust carried off in the flue gases is removed in a filter plant 18 and fed to the conveyer 14. In another embodiment, cryolite dust is removed from the flue gases in a cyclone and returned to the fluidized bed, the waste gases pass through a heat exchanger and are partly recycled. The proportion of gas recycled gives a coarse control of the bed temperature, which is closely controlled by the immersed cooling coil. Cryolite taken from the bed may be returned to reduce the carbon content still further, or more carbon may be removed in a gas fired furnace.
Patent GB-233291-A (GB)
IPC: G03B17/34
Filed: 1924-08-20
Abstract: 233,291. Cocanari, S. May 5, 1924, [Convention date]. No Patent granted (Sealing fee not paid]. Addition to 219,325. Change-boxes, sefl-contained.-The film-pack described in the parent Specification is modified by the use of films with non-perforated tabs 1 - - 6, Fig. 2, and by enclosing the pocket 10, Figs. 3 and 4, containing the films and their enclosing booklet 7, in an outer pocket 12 which has an exposure window 12<1> and is adapted to remain, together with the film to be exposed, in the change-box during exposure. The same change-box may again be used, the pin exerting retaining pressure on the tabs. Modified forms of changeboxes are also provided having pressure-operated or perforating retaining devices for engagement with the film tabs, and having means for positioning the films in the correct plane for exposure. In the pack shown, one or several bands 8, integral with the last sheet of the booklet 7, are bent back to extend between the two pockets and to pass through a slit 13 in or through a label glued to the inside of the outer pocket 12, and then glued to the top of the pocket 10 to limit the extent of withdrawal of pocket 10 with respect to the pocket 12. The back 16 of the pocket 12 is of thin flexible material such as paper, and the front 18 is of rigid material such as stiff cardboard and has at its upper edge a recess to allow the inner faces of the two pockets to come Hush when drawn out fully. A glued beading may be provided at the upper end of side 16 to prevent entry of light, and a strip 32 of fabric may be secured thereto at a position corresponding to that of the tabs, to allow the pocket to be perforated without light entering. Entry of light between the two pockets when closed is prevented by a strip 14, Fig. 3, of velvet or other light opaque material glued to pocket 10. In one form of change box 21, Figs. 7 and 8, the tabs are engaged by a pressure spring 22 having an operating knob 23 sliding in a slot 24 in the lid which has numbers indicating the positions of the film tabs. Lateral springs 25 exert pressure on the films, and two light-excluding strips of velvet 26 are secured to the upper edges. In another form, Fig. 10, the lid of the box has windows 27, corresponding to the tabs, through which the retaining pressure mav be applied by the thumb. In a further form, Figs. 11 and 12, a needle 28, attached at one end of a blade-spring 29, secured at its other end 30 to the lid of the box 21, penetrates through to the film tab. In other forms, the means for exerting pressure on the film during exposure may consist of a plate 33, Fig. 13, pressed forward by means of a knob 36, or of a spring 37, Fig. 1'6, having one end secured to the inside of the lid of the box 21 and bent back at its other end through a slot 38 to enable the pressure to be released when the pocket 10 is being moved.
Patent GB-266990-A (GB)
Title: Improvements in pressing and ironing machines
IPC: D06F71/04
Filed: 1926-08-11
Abstract: 266,990. British-American Laundry Machinery Co., Ltd., (American Laundry Machinery Co.). Aug. 11, 1926. Press-type ironing-machines.-In a press of the type which is manually closed, with motoroperated means to apply the final heavy pressure, means are provided to prevent mechanically the switching in of the motor until the press has been closed to a. safe position, and other means are provided to lock the press in the open position. In manually closing the press the toggle links 24, 25 are straightened, and until the safe position has been reached a hook shaped member 28 is prevented from swinging about its pivot 27 by an extension 40 fouling a projection from the knuckle pin 26 of the toggle. In the safe position the knuckle has risen to a straight position 29 of the hook, and when this happens a handle 41, mechanically linked to the hook member, can be swung counterclockwise to actuate a switch to switch in the motor. The means for locking the press in open position comprise engaging members 34, 36 carried by the lever arm 4 and stationary frame 1<a> respectively and released by rotation of the handle 13 by which the press is closed. Specification 262,677 is referred to.
Patent GB-1111204-A (GB)
Title: Polyester
IPC: C08G63/66
Filed: 1966-05-05
Abstract: An alkyd resin is the reaction product of (1) an aromatic acid having at least 3 carboxyl groups or an anhydride thereof, (2) an allyl ether containing at least 1 free hydroxyl group and derived from an alcohol having at least 3 hydroxyl groups, (3) a dicarboxylic acid or anhdride thereof, and (4) an alcohol having at least 2 hydroxyl groups.  Suitable acids (1) are trimellitic, hemimellitic, trimesic, pyromellitic, mellophanic, prepnitic acids or any mixture of these. The allyl ether (2) may be, e.g., of trimethylolpropane, pentaerythritol or sorbitol or any mixture of these.  The acid (3) may be, e.g., phthalic, maleic, fumaric, isophthalic, terephthalic or adipic acid or any mixture of these. The alcohol (4) preferably contains only primary OH groups, and may be, e.g., trimethylolpropane, pentaerythritol or sorbitol or any mixture of these.  There may also, optionally, be included an acyclic monocarboxylic acid, preferably of 8-18 C atoms, e.g. pelargonic acid or coconut oil acids.  The resin is produced by heating the starting materials in an inert atmosphere, preferably in stages, at 140-220 DEG  C., until an acid number below 70, preferably 50-52, is attained.  It may be neutralized with ammonia or an amine and thinned with water containing a polar organic solvent, or, when the acid number is below 50, with a hydrocarbon, e.g. xylene or white spirit. The resin may be air-dried i.p.o., e.g. ammonium chromate or cobalt nitrate, accelarated, if required, using, e.g., a 1:2 complex of Co11 and 1:10-phenanthroline. The resins in both aqueous and hydrocarbon solution may be mixed with urea-, melamine-or phenol-formaldehyde resins or with aqueous latics of polyvinylacrylate or polyvinylacetate, and cross-linked with, e.g., small amounts of toluene diisocyanate or a vinyl monomer.
Patent GB-1452701-A (GB)
Title: Morpholine derivatives
Inventor: MCLOUGHLIN BERNARD J
IPC: C07F9/6533
Filed: 1974-05-07
Abstract: 1452701 Psychotropic compositions containing 2-substituted morpholines IMPERIAL CHEMICAL INDUSTRIES Ltd 9 April 1975 [7 May 1974] 20013/74 Heading A5B [Also in Divisions C2C and C2P] Pharmaceutical compositions having psychotropic activity comprise, as active ingredient, a 2-substituted morpholine of the general formula: wherein A is -CH 2 CH 2 - or -CH=CH- and X is a phenyl group optionally bearing one or two substituents selected from halogen atoms and C 1-6  alkyl, C 1-6  alkoxy and C 6-10  aryloxy groups, the aryloxy groups themselves being optionally substituted by one or two substituents selected from halogen atoms and C 1-4  alkyl groups, or a pharmaceutically acceptable acid addition salt thereof, in association with a pharmaceutically acceptable carrier or diluent and optionally one or more known drugs selected from neuroleptic-sedative agents, e.g. chlorpromazine, prochlorperazine, trifluoperazine and haloperidol; other sedative drugs and tranquillizers, e.g. chlordiazepoxide, phenobarbitone and amylobarbitone; #-adrenergic blocking agents, e.g. propanolol; drugs used in the treatment of Parkinson's disease, e.g. benzhexol; and other antidepressant drugs, e.g. imipramine, desipramine, amitriptyline and nortriptyline; drugs of the amphetamine type; and monoamineoxidase inhibitors, e.g. phenelzine and mebanazine. They may be administered orally or parenterally in the form of tablets, capsules, aqueous or oily solutions or suspensions, emulsions, sterile injectable aqueous or oily solutions or suspensions, or dispersible powders.
Patent GB-459725-A (GB)
Title: Improved manufacture of artificial sponges
IPC: C08J9/00
Filed: 1935-07-13
Abstract: Artificial sponges are made from pastes of ammoniacal copper oxide solutions of cellulose containing substances which during coagulation give rise to the formation of pores.  The solution may be mixed with a solid, soluble or fusible, pore-forming substance of a size of grain corresponding with the pores desired in the sponge. Alternatively, gas bubbles may be formed in the solution by stirring under ordinary or raised pressure and then suddenly reducing the pressure so as to enlarge the bubbles present in the solution, or by converting easily volatile substances into vapour and thereby producing bubbles in the sponge mass.  Fibrous material and colouring matter may be incorporated in the solution.  Acids, alkalis, water, or salt solutions, if desired at raised temperatures, may be used to coagulate the solution. Alternatively, steam or dry heat may be used for coagulation.  The cellulose hydrate sponge obtained may be washed free from copper by treatment with dilute acid.  In an example, a solution of cotton linters in ammoniacal copper oxide is mixed with crystallized sodium sulphate to form a paste which is formed into cubes, spheres, or other shaped masses.  These are coagulated by immersion in sodium sulphate solution acidified with sulphuric acid, or in dilute sulphuric acid.  They are allowed to remain in the bath for several hours and are then washed.  Where salts are used for forming the pores, they may be recovered easily without contamination with sulphur compounds as is the case when the sponges are made from viscose.  Copper may be recovered from the salt solutions by precipitation as basic copper carbonate, or as copper oxide, or by an electrolytic process.  The salt obtained by evaporation of the solution may be used again without purification in the manufacture of the sponge material.
Patent GB-723592-A (GB)
Title: Process for producing meta-dichlorobenzene
IPC: C07C17/358
Filed: 1952-08-11
Abstract: A process for producing meta-dichlorobenzene isomerically from o-dichlorobenzene, or p-dichlorobenzene or a mixture of dichlorobenzenes containing less than 55 per cent by weight of m-dichlorobenzene comprises heating such dichlorobenzene or mixture of dichlorobenzenes under substantially anhydrous conditions to a temperature above the respective normal boiling point and at a superatmospheric pressure in the presence of at least 1 part by weight of anhydrous aluminium chloride per 100 parts by weight of the dichlorobenzene or mixture of dichlorobenzenes.  In a modified process water is present in an amount not in excess of 10 per cent by weight based on the weight of the anhydrous aluminium chloride.  In examples: a mixture of o, m and p-dichlorobenzenes is obtained by heating o-dichlorobenzene containing minor amounts of the other isomers in a seated tube with aluminium chloride, adding water to hydrolyse the latter and steam distilling the product (1); p-dichlorobenzene is employed as starting material in a similar process (2); similar processes are carried out using various amounts of aluminium chloride (3) and various temperatures (4), whilst (4) is repeated using p-dichlorobenzene as starting material (5).  For comparison other runs are carried out at lower temperatures. Specification 699,153 is referred to.
Patent GB-880340-A (GB)
Title: Electro magnetic device
Inventor: PARISOE WILBERT
IPC: H01F7/14
Filed: 1960-06-08
Abstract: 880,340. Electromagnets; reciprocating motors. OAK MANUFACTURING CO. June 8, 1960, No. 20107/60. Class 35. A D.C. electromagnet has a short-circuited ring 31 adjacent the energizing coil 17 to delay its action, and the resistance of the ring may be varied by the extent to which a screw 45, or a tapered pin, is used to bridge a radial gap in the ring. The screw or pin may be of the same or a different material to that of the ring, e.g. of copper or brass. The electromagnet may be of the type in which linear motion of an armature 1 is converted into partial rotation by balls 29 running in inclined grooves in an armature plate 26. The armature is returned by a spiral spring. Self-interrupting contacts 40, 41 (Fig. 1, not shown), operated by a cam on the armature shaft, may be included in the energizing circuit. Specifications 602,812 and 874,386 are referred to.
Patent GB-649639-A (GB)
Title: Improvements in thermal power plants
IPC: F02C1/00
Filed: 1949-08-02
Abstract: 649,639. Gas turbine plant. AKT.-GES. FUR TECHNISCHE STUDIEN. Aug. 2, 1949, No. 20117. Convention date, Aug. 2, 1948. [Class 110(iii)] A gas turbine plant comprises a turbine 8, a compressor 1, an exhaust heat-exchanger 4, a cooler 2 and a heater 6 operating in a closed circuit. The heater 6 comprises a rotary heat-absorbing mass 10, the halves of which are in separate chambers 13, 14. Combustion products from a furnace 15 pass through the chamber 13, giving up heat to the mass 10 and then through a combustion air heater 21. The heater 21 may be replaced by a turbine which drives the compressor 20. In a modification, combustion air for the furnace is bled from the compressor 1. A make-up compressor is driven by a turbine receiving the gases from the chamber 13. The combustion gas may be under a regulated pressure or the same pressure as the circuit gas. The speed of the rotary heater may be varied with the useful load.
Patent GB-833173-A (GB)
Title: Continuous mixing of alkali cellulose with etherification agents
IPC: C08B11/00
Filed: 1958-06-24
Abstract: Shredded alkali cellulose and a finely-divided etherification agent are suspended in a stream of gas and the resulting mixture, in the form of a loose mass, is agitated and then subjected to shearing forces in a comminuting apparatus in which the comminuting members are in relative motion.  The alkali cellulosees may be shredded in a disintegrator, the motion of the crushing members of which may provide a suction for the introduction of the alkali cellulose there-between and may generate a current of air in which the shredded alkali cellulose is suspended.  Etherification agent may be introduced into the disintegrator as a finely-divided dust, spray or mist and may be passed through the crushing members with the alkali cellulose or may be introduced into the outgoing air stream containing finely-dispersed alkali cellulose.  As etherification agents may be used halo-fatty acids or halo-alkylsulphonic acids or their salts, especially chloracetic or chloroethanesulphonic acid or salts thereof, in the solid state or in solution, especially aqueous solution.  Liquid etherifying agents which do not vaporize under the operating conditions (i.e. up to 50 DEG  C.) may also be used, e.g. sultones.  The air stream from the disintegrator may be arrested so that the alkali cellulose and etherification agent are separated from the stream and are then conveyed to a vessel in which the mixture is mechanically agitated.  Alternatively the air stream carrying the alkali cellulose and etherification agent, may be agitated by passage into a vortex section.  In either event, the agitated mixture may then be introduced into a mixing mill in which the mixture is intimately mixed by the action of shearing forces between smooth surfaces which are in relative motion, as by smooth grinding discs. The mixture is finally reacted according to known methods.
Patent GB-671463-A (GB)
Title: Improvements relating to alloys and the production of cast iron with their use
IPC: C22C1/03
Filed: 1948-07-28
Abstract: Alloys of the following composition are suitable for producing nickel cast iron containing graphitic carbon in the spheroidal or compacted form: Ni, at least 35 per cent; Mg, 12-30 per cent; Si, 10-45 per cent; C, not exceeding that amount which is soluble in the liquid alloy, this amount not exceeding 1 per cent; Co, 0-0.5 per cent; Fe, 0-3 per cent; Mn, 0.2 per cent, Mo, 0-1 per cent; Cr, 0-1 per cent; Ca, 0-3 per cent; Al, 0-2 per cent.  Some of the Ni in the alloy may be replaced by Cu in an amount which does not exceed one half of the Ni content, the Ni content not falling below 35 per cent.  In the production of the alloy Mg may be added to a Ni melt after the addition of the Si and any other elements. Specifications 630,070 and 671,467 are referred to.
Patent GB-330793-A (GB)
Title: An improved automatic coupling for railway rolling stock and like vehicles
IPC: B61G1/18
Filed: 1929-07-02
Abstract: 330,793. Bogdanov, V.N. July 2, 1939. Couplings, automatic.-In an automatic coupling for railway and like vehicles each of two identical interengaging coupler-heads 1 is provided with internally projecting peripheral flanges 8 and with a rotatable locking-member 3 having projections 3<11> which are adapted to lock together the adjacent flanges 8 on the two heads. The locking-members 3 are provided centrally with rearwardly extending hollow bosses 3<1> by which the members are rotatably mounted, and with inclined front surfaces 4 which, when the couplerheads approach, engage the flanges 8 and cause the members 3 to be lifted and then to drop either by gravity or spring pressure into locking engagement with the flanges 8. In the construction shown the flanges 8 are plain, but in a modification they are formed as corrugated surfaces co-operating with similar surfaces on the members 3. For unlocking purposes a vertically sliding forked rod 12 is provided having lateral projections 12<1>, 12<11> for engaging and lifting the members 3, or. an horizontal rotatable rod having two cam surfaces thereon may be employed. Integral or attached guides 5 serve to centralize the heads or for the attachment of a non-automatic link coupling, and apertures 7 form passages for brake pipes, electric cables &c.