baber/WOPTO huggingface dataset:
Patent GB-501412-A (GB)
Title: Improvements in and relating to regulators for dynamo electric machines
IPC: H02P9/08
Filed: 1937-08-25
Abstract: 501,412. Automatic control systems. BRITISH THOMSON HOUSTON CO., Ltd. Aug. 25, 1937, No. 23343. Convention date, Aug. 28, 1936. [Class 38 (iv)] Electromotive force.-In a regulating system for an alternator 2 which comprises exciting rectifiers 6, 7, the grid potential of which is controlled by auxiliary discharge devices 20, 30 in response to voltage variations on the line 1 supplied by the alternator, additional discharge devices 106, 107, operating on a higher anode voltage, supply increased excitation on the occurrence of transient low voltage conditions. The grid circuits of these devices 106, 107 include a resistance 69 and a fixed potential 28 ; the resistance 69 is supplied with D.C. proportional to the line voltage from the secondary 65 of a transformer 60 so that a fall of line voltage will increase the potential on the grids to render the additional discharge devices operative. The regulation is normally effected by D.C. potentials applied to resistances 43, 77 in the grid circuits of rectifiers 6, 7 by machine current and voltage conditions respectively. The resistance 77 is in parallel with a condenser 10 intermittently charged through the auxiliary discharge device 30, the grid of which is transformer-coupled to the anode circuit of a discharge device 20. The grid circuit of the device 20 includes the D.C. voltages across a constant potential discharge device 25, a resistance 81 supplied with current porportional to field excitation and a resistance 42 supplied with current proportional to the voltage of the line fed by the machine 2.
Patent GB-893279-A (GB)
Title: Nitrated 1,3,5-triazine derivatives and a process for their production
IPC: C07D251/18
Filed: 1958-07-21
Abstract: The invention comprises 1, 3, 5-triazines containing one nitro group and two amino groups or two nitro groups and one amino group in the triazine ring, and their preparation by nitrating the corresponding chloro-amino-triazines.  An example prepares diamino-nitro-triazine.ALSO:The invention comprises 1,3,5-triazines containing one or two nitro groups in the triazine ring, and which are respectively di- or monosubstituted in the ring by alkyl, aryl, aralkyl or amino groups or by alkyl-, aryl- or aralkyl-oxy or -amino groups, and their preparation by nitrating the corresponding chloro-triazines, e.g. with concentrated or 100% nitric acid. Examples prepare dinitrophenoxy-dinitro-, trichlorophenoxy-dinitro-, chloroanilino-dinitro-, dichloroanilino-dinitro-, diamino-nitro-, phenyl-dinitro-, and ethyl-dinitro-triazines.ALSO:Bactericidal fungicidal and insecticidal compositions comprise as active ingredient mono-and di-nitro-1,3,5-triazines, the other ring substituents being alkyl, aryl, aralkyl, amino, or alkyl-, aryl- or aralkyloxy or -amino groups in alkaline solutions.
Patent GB-1006102-A (GB)
Title: Locking devices for threaded connections
IPC: F16B39/24
Filed: 1962-06-19
Abstract: 1,006,102. Locking nuts and bolts; nuts; washers. M. HERMANUS. June 19, 1962 [June 26, 1961], No. 23507/62. Heading F2H. A threaded connection has means for locking the threaded elements comprising a plastically deformable annular washer consisting of a polyamide, copper or lead, and a bolt, nut or washer having a thrust surface which acts directly against the deformable washer and is formed with a spiral groove or closely spaced grooves arranged according to circles which are concentric or eccentric to the axis of the threads. The spiral groove is so disposed that the material of the washer is forced inwardly on tightening of the connection. The groove or grooves are provided on a thrust surface which is flat, frusto-conical or domed. The plastically deformable washer is flat or frustoconical and may be provided with a steel holding ring. A double locking means is shown in Fig. 11. Workpieces 21, 22 are connected by a bolt 11 and nut 1 having a spirally grooved thrust face 4 which acts on the plastically deformable washer 7 which engages the workpiece 21. A further plastically deformable washer 7 bears on the workpiece 22 and engages the grooved thrust surface 4 of a locking washer 5. In a modification, Fig. 13 (not shown), the screwed connection comprises a bolt having a conical head there being provided a washer having a conical recess to receive the head of the bolt, the washer having a spirally grooved thrust surface. In the case of concentric grooves being provided on the thrust surface, at least one radial groove is also provided.
Patent GB-824954-A (GB)
Title: Heavy water concentration by fractional distillation
IPC: C01B5/02
Filed: 1956-07-31
Abstract: <PICT:0824954/III/1> Water enriched in deuterium oxide is obtained by fractional distillation of ordinary water, in conjunction with the production of power in a turbine plant, by feeding water into the upper part of a fractionating column 5, introducing steam from a turbine 14 into the lower part of the column, condensing the steam withdrawn from the top of the column, returning part of the condensate to the column through pipe 18, passing the liquid withdrawn from the base of the column into the boiler 9 of the turbine plant, and withdrawing heavy water from the boiler through pipe 19, or from any other part of the plant preceding the column. The heavy water is thereby obtained with economy of heat-expenditure. The make-up water is introduced into the upper part of the column via demineralizer 2 and deaerater 3.  The column may contain plates or it may be filled with suitable packing.  The boiler is operated at pressures of several thousand pounds per square inch.  The steam from the boiler is passed through high-pressure turbine 11, next through low-pressure turbine 14, and then into the lower section of the column.  Since the concentration of deuterium takes place most readily at pressures below 1 atm. absolute and temperatures below 212 DEG  F., it is desirable to place the fractionation column in that portion of the plant where the conditions are of this order.  The portion of the condensate from condenser 15, which is not returned as reflux through pipe 18, is discharged from the system through pipe 20.  In an alternative embodiment, the fractionating column is installed between the H.P. and the L.P. turbines.  For a six-fold concentration of heavy water and an average column-pressure of 2 lbs. per square inch (absolute), a column of sixty theoretical plates requires a reflux ratio of twenty.  The column may be packed with corrugated, multilayer, expanded lath.
Patent GB-891397-A (GB)
Title: Improvements in or relating to devices for cathodic protection
IPC: C23F13/02
Filed: 1958-07-22
Abstract: 891,397. Preventing corrosion. PREISER, H. S. July 22, 1958 [Dec. 2, 1957], No. 23577/58. Class 123(1). A sacrificial multiple disc anode, for protecting e.g. heat exchangers, pumps, &c. aboard ships from corrosion by sea water, comprises a base plug 10 formed of brass or other cathodic material and having external pipe threads 12 for engaging a threaded opening in a wall of the heat exchanger or pump, and a number of interconnected anode discs 16. Each disc 16 comprises a cylindrical core 18 which is made e.g. of steel, or other cathodic material, and has a threaded axial stem 20 at one end and a threaded axial bore 22 at the opposite end. The outer surface of the core 18 is roughened at 24 to facilitate bonding to a sleeve 26 of anodic material, e.g. zinc or magnesium, which is cast, or moulded, around it to leave protruding ends 28, 30 the end faces of which are roughened or knurled at 32, 34 in assembling the anode the base plug 10 is tightly screwed to the stem 20 of a first disc 16, then the stem 20 of a second disc is screwed into the bore 22 of the first disc a third disc being secured to the second disc and so on until the desired length of anode is attained. The base plug 10 is screwed firmly, to provide a watertight electrical connection, into the corresponding threaded hole in the wall of the heat exchanger, or pump. Polygonal, square, or triangular shapes of discs may be employed.
Patent GB-1335450-A (GB)
Title: External or internal involuate helical spur gearing
IPC: B23F19/06
Filed: 1971-04-19
Abstract: 1335450 Gear finishing ZAHNRADFABRIK FRIEDRICHSHAFEN AG 19 April 1971 [10 March 1970] 23664/71 Heading B3K [Also in Division F2]  In external or internal involute helical spur gearing comprising a pair of cylindrical helical gears having involute teeth for meshing together with parallel axes, said gears have tooth dimensions (including number of teeth, normal module, addendum factor, pressure angle, helix angle, addendum modification) such that the transverse contact ratio # p  of the parallel axes meshing of the gear pair lies between 0À7 cos<SP>2</SP># g  and 1À1 cos<SP>2</SP># g  where # g  is the helix angle at the base circle, and the teeth of at least one of the gears are finish machined by meshing, with crossed axes, with a cylindrical toothed tool having tooth dimensions such that the normal contact ratio # n  of the crossed axes meshing of the tool and said one gear lies between 1 and 1À10. Reference is made to the finishing processes of shaving, in the soft condition, and to honing after hardening. The tooth flanks may be crowned. Addendum factors and normal pressure angles may lie between 0À3 and 1À0 and 20 degrees and 30 degrees respectively; and fillet radius is greater than 0À2 normal module.
Patent GB-169085-A (GB)
Title: Alternating current electromagnetic engine
IPC: H02K7/065
Filed: 1920-08-13
Abstract: 169,085. Payne, V. J. C. Aug. 13, 1920. Reciprocating machines.-A motor comprises two or more laminated ironclad electromagnets B having sliding cores E coupled to a crankshaft P and excited in turn from an alternating-current generator M coupled or geared to the shaft P on which there is a fly-wheel. The exciting circuits, which contain adjustable condensers U in series or parallel with the magnet coils, are closed by oil switches L operated by cams H on the shaft. These switches, as shown in Fig. 3, have laminated blades F bearing on faced terminal blocks G and depressed by the cams H against the action of springs J until released by the steps M on the cams. Short stiff springs E take up the jar at break. For running in either direction, two sets of cams and switches are so arranged that either may be brought into operation. At starting, the machine is run up to speed by an outside source,. after which the dynamo M excites it. The speed of the machine is controlled by varying the electromotive force of the dynamo or by altering the capacity of the condenser. When required to give constant speed at variable loads, a governor T is employed to adjust the capacity in the magnet circuit by means of a contact G operated by the governor collar to slide over terminal blocks L' to which sections of the condenser are connected.
Patent GB-1081872-A (GB)
Title: Improvements in or relating to microscopes and mechanical stages therefor
IPC: G02B21/26
Filed: 1964-06-09
Abstract: 1,081,872. Microscopes. G.V. GRISPO. June 4, 1965 [June 9, 1964], No. 23761/64. Heading G2J. A mechanical stage for a microscope is mounted on a fixed support and is slidably movable, in two dimensions, by a pivoted control lever so that translational movement of the control lever effects a related translational movement, without rotation, of the stage, and rotation of the control lever rotates the stage. As shown, a microscope slide 36 is supported on a circular support plate 34 which is secured to. the outer race of a horizontal circular ball bearing 40, the inner race of which is mounted on a plate 42 secured to the upper face of a movable plate 26; movable plate 24 is mounted on a fixed plate 20 via bars 28 fixed to plate 20, and ball bearings 30 enabling plate 24 to be moved in one direction in the horizontal plane; plate 26 is mounted in a similar way using bars and ball bearings (not shown) on movable plate 24 so that it is movable in the perpendicular direction to the direction of movement of plate 24 with respect to plate 20; a control lever 52 is pivoted at a universal joint 54 and passes through a circular bearing 72 consisting of a ball 72 mounted in, and in sliding contact with, a concavefaced ring 74. Translational movement of the lever 52 is transmitted to object plate 34 via movable plate 26, by fixed bars 44 and 46. The universal joint 54, at which control lever is pivoted, is secured by a forked member 62 to spindle 56 which has secured thereto a cog wheel 76 which engages a larger cog wheel 78 secured to a vertically extending spindle 80, the upper end of which is linked, by a double universal joint 86 to a splined shaft 84, the splines of which engage in vertically extending grooves in the bore of a bush 88 which is secured in an aperture in plate 38, so that on rotating control lever 52, plate 38, and hence slide 36, is similarly rotated.
Patent GB-225521-A (GB)
Title: Improvements in or relating to pressure frames for vertically guided sliding windows
IPC: E05F11/38
Filed: 1924-10-08
Abstract: 225,521. Naamlooze Vennootschap Machinerieenen Apparaten Fabrieken. Dec. 1, 1923, [Convention date]. V e h i c l e windows; frames. - The pressureframe of a railway carriage or other sliding window is pressed downwards by springs 7 and positively guided against the sash at one end by means of inclined guides 5 engaging fixed slots 8 in the frame and resiliently pressed at the lower end by a spring on a rod 17 acting between the end of the operating lever 11 and the limb of a U-shaped bracket carrying the rod and attached to the pressure frame. The operating lever 11 is pivoted to the door &c. at 12, the vertical and horizontal components of the eccentric movement of the pivot 15 serving to engage or disengage the pressure frame and window. The window is automatically withdrawn from the fence rail 22 before opening by angle-pieces 27 on the pressure frame engaging slotted cranked plates 25 on the window. The pressure-frame may be automatically released from the raised position to press the sash over the fence rail by a pivoted crank 24 engaged by an arm 20 on the sash when closing and actuating the lever 11 so as to lower the pressure-frame.
Patent GB-260399-A (GB)
Title: Improvements in rotary blowers and pumps
IPC: F04D29/28
Filed: 1925-09-24
Abstract: 260,399. Kirby, T., Kirby, J. H., and Kirby, E. P., (trading as Kirby & Sons, T.). Sept. 24, 1925. Casings; rotary-chamber fans and pumps.-A rotary blower has a casing A, B provided with blades a, b and axial inlets a<1>, b<1>. The outlets a<2>, b<2> lead the air, &c. to a receiver C provided with curved radial ducts D and a central guide E. The inlet b<1> acts as discharges for any excess pressure. For use as a pump, an exterior casing is provided. The Provisional Specification describes a blower provided with only one inlet and one set of blades.
Patent GB-691325-A (GB)
Title: Improvements in or relating to braking devices, particularly for power vehicles
IPC: F16D51/26
Filed: 1950-09-29
Abstract: 691,325. Internal shoe-drum brakes. TEVES, A., TEVES, H., and TEVES, E. A., [trading as TEVES MASCHINEN-UND ARMATURENFABRIK KOMMANDIT-GES., A.]. Sept. 29, 1950 [Sept. 29, 1949], No. 23913/50. Class 103 (i). A hydraulic internal-shoe drum brake is provided with an auxiliary manual actuator comprising a lever 19 pivotally connected at one end to one of the shoes 4, the other end being connected to a hand actuator mechanism, and abutting intermediate its ends against an extension 13 of one of the hydraulic pistons 11 in the cylinder 8, the pistons normally abutting so that movement of the lever 19 by the hand actuator acts directly on the other piston 5 and thereby on the other brake shoe 3, the pistons abutting end caps 9, 16 slidably mounted at each end of the cylinder 8 and engaging the shoes 3, 4. The end of the extension 13 is slotted for engagement with the web of the shoe 4, the end surfaces bearing against the curved intermediate portion 20 of the lever 19, Adjustment of the auxiliary hand-actuating mechanism is effected by a screw 27 carried by one of the end caps of the lower hydraulic cylinder 25.
Patent GB-1462262-A (GB)
Title: Hand saw having releasable blade
IPC: B23D49/14
Filed: 1974-05-30
Abstract: 1462262 Hand saws ATLANTIC SERVICE CO Ltd 30 May 1974 [12 Oct 1973] 23978/74 Heading B5L In a back saw having a releasable blade and useable particularly for meat cutting or woodworking, a spine 13 having a V-groove 22 is provided fast with a handle (12), and a releasable blade 11 is secured to the spine by hooking the blade successively on to an arm 43 pivoted to the free end of the spine and on to a draw bar 25, tiltably guided in a slot 24 of a socket (15) fast with the spine, and then pulling the draw bar generally in the direction of the handle by means such as a threaded locking mechanism or, as shown, a cam 33 actuated by a removable tommy bar 40, the disposition of the parts of the saw being such that, preferably, the blade is thereby drawn up into the groove 22. By using a hardened metal cam 33, the saw components may be slightly stressed to maintain them in rigid twist-free interconnections. One or more shims 52 may interpose the cam and the socket (15). The single spine handle frame may be provided in combination with a variety of blades of different tooth sizes or configurations or materials. The saw blades may be flexible and may have a straight or sinuous back edge 53.
Patent GB-312626-A (GB)
Title: Improvements in or relating to machines for winding yarn, thread, silk and the like
IPC: B65H54/16
Filed: 1928-08-21
Abstract: 312,626. Universal Winding Co., (Assignees of Anderson, J. A.). May 29. 1928, [Convention date]. Winding - machines; thread - guides; stopmotions.-In a machine for winding yarn, thread, silk or the like of the type wherein the yarn is laid in successive conical chases and the guide is rocked about an axis substantially parallel to the winding spindle to cause it to follow the conical contour of the winding without contacting therewith, the means for rocking the guide comprises a pivoted track 65, 66, Figs. 3 and 5, which is engaged by the thread-guide 58 and lies parallel to the pivotal axis 24 of the guide, the track being rocked to cause the guide to follow the contour of the winding. The track 65, 66 is mounted to rock about the axis 24 and is moved by a driving-member, e.g. an adjustable crank-pin 75, Figs. 2 and 3, coupled to the traverse cam and rotated in synchronism therewith. The guide 58 is positively rocked during each longitudinal traverse movement, and is thereby caused to follow the conical contour of the winding, by the crank-pin 75 which acts through the adjustable connection 78, 79, 80 to rock the track 65, 66 engaged on its upper side by a double-sided shoe 70 secured to an arm 69 projecting from the leg 53 of the holder 55. The disc 74 carrying the crank-pin 75 is adjustable eccentrically of the cam-shaft 6 to vary the throw. The guide 58 through which the yarn y is led to the tube C is traversed by a bar 24 connected by an arm 23 to the rod 18 which carries the roller 20 engaging the cam-grove 21. The rod 18 slides in a groove 17 formed in the traverse frame 10 and the bar 24 slides in bearings 26, 27 on a supplemental frame 28 attached to the part 29 of the traverse frame 10, the frame 28 having a bar 30 overhanging the groove 17 and abutting the rod 18. The frame 10 is adjustable on the shaft 6 and is normally held by a lug 38 on a weighted detent 36 carried by a rod 33, engaging a shoulder 39 on a locking member 40 adjustable on the frame 2. The arm 23 is connected at 48 to a slot in the rod 18 and encircles the bar 24 which is screwed and carries the usual nut-member 51 supporting a progression-wheel 61 and the bifurcated holder 55 for the guide 58. When the winding is completed, the guide 25 engages the end 43 of a lever 44, Fig. 2, on the rod 33 and thereby rocks the rod 33 to release the lug 38 from the shoulder 39 and permits the frame 10 to swing away from the winding-spindle 3 so that the bobbin may be doffed, the drive of the machine being simultaneously stopped.
Patent GB-261146-A (GB)
Title: Improvements in or relating to nap raising appliance for textile fabrics
IPC: D06C9/00
Filed: 1925-09-28
Abstract: 261,146. Turner, E. Sept. 28, 1925. Pile or nap, raising.-In a singeing machine the nap is raised prior to singeing by suction. The fabric is passed over the aperture b in a vacuum box a, the aperture being adjusted in length by rods p according to the width of the fabric, and in width to vary the degree of treat. ment by adjusting one of the two lips c, c<1> of the aperture. The box a is preferably arranged at a point where the fabric has a solid backing, e.g. over a guide roll, or a plate k adjustably supported by springs m and screws l. The length of the aperture may be determined by plates q sliding on a tube o extending through the box a and operated by wires r and springs s. The invention described in the Provisional Specification is not restricted to use in a singeing machine, Specification 248,810 is referred to.
Patent GB-1003686-A (GB)
Title: Unsaturated amines
IPC: A61K31/135
Filed: 1963-06-17
Abstract: The invention comprises benzocycloalkane compounds in which the cycloalkane ring has 5-7 ring members and is substituted by an N-(alkynyl)-alkyl)-amino group (where an N-Alkynyl-alkyl) amino group is one where the -C­C- group is separated from the N-atom by an alkylene group) and wherein the amino N atom may also carry, in addition to the alkynyl-alkyl group, a C1- 7 aliphatic hydrocarbon group, and in which the aromatic ring may be substituted by halogen atoms and/or C1- 7-alkyl, alkoxy, alkylene dioxy or trifluoromethyl groups.  The benzo cycloalkane ring systems are those of indane, tetrahydro naphthalene and benzosuberane.  The compounds are prepared by reacting either a chlorobenzo cycloalkane with an N-Alkynyl-Alkyl)-amine and if desired introducing on to the amine N-atom an aliphatic hydrocarbon radical or an amino benzo cycloalkane, in which the amino group is at most a monoaliphatic hydrocarbylamino group, with the reactive ester of an alkynyl-alkanol, or the tertiary bases of the invention with a C1- 7 alkyl or phenyl-C1- 7-alkyl halide, sulphate or sulphonate to give the quaternary ammonium compound. The compounds may also be prepared by dehydrohalogenation of the N-(dihalo alkyl) aminobenzo cycloalkane.  Mixtures of isomers formed may be separated according to known methods.  1 - or 2 - (Methylamino) - indanes, 1 - methylaminosuberane, 1 - (ethylamino) - indane, 6-methyl - 1 - (methylamino) indane, and 1-(methylamino) - 1,2,3,4 - tetrahydronaphthalene are prepared through the corresponding 1- or 2-formyl or-acetyl derivatives by reduction.  1-Amino - 1,2,3,4 - tetrahydronaphthalene and 1-amino - benzosuberane are prepared through their 1 - oximino compounds by reduction. 1 - Amino - 6 - methyl - indane is prepared by reducing 4-methylcinnamic acid to give 4-methylphenyl propionic acid, cyclising this to give 6 - methyl - indane - 1 - one, forming the oxime and reducing it.  1 - [N - (2,3 - Dibromopropyl) N - methylamino] - indane is prepared by reacting allyl bromide with 1-(N-methylamino) - indane to give 1 - (N - Allyl-N-methylamino)-indane and brominating the product. Pharmaceutical compositions comprise the compounds of the invention in admixture or in conjunction with a pharmaceutically suitable carrier.  The compositions which exhibit stimulant properties (monoamine oxidase inhibitors) may be formulated as tablets, dragees, capsules, or solutions for parenteral administration.