baber/WOPTO huggingface dataset:
Patent GB-304552-A (GB)
Title: Improvements in and relating to hot water supply boilers
IPC: F24H1/20
Filed: 1928-05-31
Abstract: 304,552. Nobbs, C. G. May 31, 1928. Heating by electricity.-A hot-water boiler B with insulating jacket A is divided by a conducting partition F into a lower heating compartment H and an upper storage compartment to which cold water is fed, and to which the hot water draw-off pipe O is connected. The lower compartment is heated, as for example by electrical heaters K controlled by a thermostat L, and is connected to the upper compartment by a relatively narrow internal vertical channel G formed between an upward extension of the conducting partition and the shell of the boiler.
Patent GB-457614-A (GB)
Title: Automatic volume control arrangement for carrier wave receiving systems
IPC: H03G3/26
Filed: 1935-06-01
Abstract: 457,614. Valve circuits for wireless reception. KOLSTER-BRANDES, Ltd., and REINKEN, L. W., Cray Works, Sidcup, Kent. June 1, 1935, No. 15973. [Class 40 (v)] An A.V.C. system, particularly for interrupted C.W. reception, has a time lag circuit comprising a device having an asymmetric resistance characteristic which gives different response speeds to the control for increasing and decreasing receiver gain. In particular the control operates slowly to increase gain and quickly to decrease gain. In the embodiment described, I.F. energy is fed to the second detector DET2 and to an auxiliary anodebend pentode detector V which produces A.V.C. potentials across its anode resistance R1. Said potentials are fed to the controlled valves through a time-lag circuit comprising a dry-plate rectifier Y and condenser C2 the former being arranged so that its resistance to the flow of condenser current is low when the grids of the controlled valves are becoming increasingly negative and high when they are becoming less negative. Grid and anode biases for the valve V are derived, the one from a potentiometer R3, R4 connected to the anode voltage source, and the other from a resistance R2 carrying the anode current of all the controlled valves and the output valve.
Patent GB-1119915-A (GB)
Title: Drive transmission e.g. for a variable jet nozzle
Inventor: COLLEY ROWAN HERBERT
IPC: F02K1/12
Filed: 1967-04-07
Abstract: 1,119,915. Cams. ROLLS-ROYCE Ltd. 7 April, 1967, No. 16152/67. Heading F2K. [Also in Division F1] A drive transmission comprises a roller having two axially spaced portions which are respectively formed with helical teeth of opposite hand, a member provided with two toothed tracks with which the said portions are respectively in mesh, the said tracks extending normal to the axis of the roller, there being means for effecting relative movement between the said portions and the tracks in a direction normal to the axis of the roller. The invention is described with reference to a variable area propulsion nozzle of a gas turbine jet engine, the nozzle comprising a first set of flap members 20 pivotally mounted at 21 at the downstream end of the jet pipe 12, a second set of flap members 22 pivotally mounted at 23 at the downstream ends of the flap members 20, and a third set of flap members 24 pivotally mounted at 25 at the downstream end of the outer casing 11 and also pivotally mounted at their downstream ends at 26 to the downstream ends of the flaps 22. A raised member 54 is secured to each alternate flap member 20, the member being formed with a pair of cam tracks 52, 53 which are provided with helical teeth 50, 51 of opposite hand, a part-cylindrical surface 55 being provided between the cam tracks. A yoke member 33 is provided comprising a cross-member 32 and side-pieces 34, 35 between which extends a shaft 36 on which a roller 37 is rotatably mounted. The roller is formed at its ends with helical teeth 40, 41 which engage the teeth 50, 51 on the cam tracks 52, 53 respectively, and between the teeth 40, 41 with a land 42 which engages the surface 55 of the member 54. The yoke 33 and roller 37 are movable axially by means of a ram unit 27 connected to the cross-piece 32 by means of rod 31. As the yoke member is moved in an upstream direction the flap members 20 are pivoted inwardly about the pivotal points 21 and vice versa, the flap members being pivoted outwardly by the pressure of the jet stream. The rollers 37 are interconnected by means of articulated shafts 56 so as to ensure simultaneous movement of the flap members 20. A shaft 62 extends between the downstream ends of the side-walls 34, 35 of the yoke 33 and a rod 63 (Figs. 5, 6, not shown) is pivotally mounted at its upstream end on the shaft 62, the downstream end of the rod 63 carrying a roller 65 which is mounted in a cam track 66, the cam track being mounted between inner and outer walls 67, 68 of the respective outer flap member 24. Each roller 65 is connected by means of a link 71 to a pivot 72 on the next adjacent flap member 24 so that movement of the alternate flap members 24 by the links 63 effects movement of the whole assembly of flap members 24.
Patent GB-318294-A (GB)
Title: Power factor control for power systems
IPC: H02J3/18
Filed: 1928-06-02
Abstract: 318,294. Melton, S. June 2, 1928. Motor - generators. - For maintaining unity power factor in a system involving a synchronous motor driving a continuous-current generator, the motor is excited by an exciter having field windings carrying current proportional to the generator load current and other windings connected in parallel to the generator armature. In the form shown, the synchronous motor 10 drives the continuous-current generator 11 and is excited at 27 by a machine 24 one field coil 23 of which is shunted across a resistance 32 in the generator outgoing lead and the other 29 of which is shunted across the generator terminals through a rheostat 52. The shunt 32 may be omitted. Several motors connected to the same shaft may be simultaneously controlled and where one motor drives a number of generators more than one series coil 23 may be employed.
Patent GB-1061411-A (GB)
Title: Lead-screw drive mechanism
IPC: B23Q11/12
Filed: 1964-04-20
Abstract: 1,061,411. Bearings; lubricating; screw-and-nut-gearing. GAMBIN S.A. April 20, 1964 [May 2, 1963], No. 16231/64. Headings F2A arid F2Q. A lead-screw mechanism for a machine tool comprises a rotatable screw 27 engaging with a pair of nuts 41, 42 which are provided with helical oil-grooves 55, 56 extending along the load-bearing flanks of their threads and terminating at a point remote from each end thereof, the grooves being filled with pressurized oil through pipes 57, 58, ducts 61, 62, annular grooves 63, 64 and further ducts 65, 66. The nut 41 is fixed to a support 29 by screws 43, whereas the nut 42 is provided with splines 46 which engage with further splines 47 on a ring 48 fixed - to the support by a plate 51 and screws 49 so that the two nuts can be pressed apart from each other by a spring 53 to minimize backlash. The spring is separated from the nut 42 by a ring 50 which is kept stationary by a pin 52. Leakage oil escapes from the mechanism through pipes 74, 75, 76. In a modification, Fig. 6 (not shown), the nuts are biased towards each other by a spring (53a) lodged in a cap or end piece (82) which is attached to the support (29). In a further modification, Fig. 4 (not shown), the screw (4) engages with a single nut (5) which may be provided with an oil groove (12) in one or both of the flanks of its thread. The screw may be stationary and the nut rotatable.
Patent GB-957670-A (GB)
Title: Amusement and educational aid for children
IPC: A63H33/38
Filed: 1963-04-25
Abstract: 957,670. Wallets. G. F. HOPFNER. Sept. 25, 1963 [Sept. 15, 1962], No. 16366/63. Heading A4G. [Also in Division B6] A painting book b comprises original painting copies l, Fig. 5, each formed from a sheet of synthetic plastic material with a moisture resistant and washable coating of laquer covering the coloured picture printed thereon, and copies m provided with the printed outline of the picture to be painted, each formed from a sheet of synthetic plastic material capable of being painted with colours which can be washed off. The book is kept in a wallet a which also holds a paint box c with water colours and a brush and wiping sponge d. Specification 169,916 is referred to.
Patent GB-463596-A (GB)
Title: Improvements in and relating to spring-covers and their manufacture
IPC: F16F1/24
Filed: 1936-06-12
Abstract: 463,596. Spring covers. FERGUSON, W. T. June 12, 1936, No. 16436. [Class 108 (iii)] A reinforced blank for a laminated spring cover is constructed from a sheet 10, Fig. 1, of metal or other material suitable for shaping to channel form, a plurality of transverse flexing slots 12, adapted to extend around three sides of the spring, being formed in the sheet and one or more narrow reinforcing bands 16 affixed thereto. As shown, the bands 16 cover the slots 12, the ends of each band being inserted in longitudinal slots 14 in the sheet 10. Additional or alternative bands may be provided at the inner end or at other parts of the sheet and may be spot-welded thereto. The plate is shaped into channel section preferably by two stampings, the edges being bent over to form out-turned flanges _22, Fig. 8, which are adapted to be engaged by in-turned flanges 26 on a flexible top portion 24, after which the flanges are hammered down with the bands thus clamped firmly in position. One or more of the bands may function as clips to prevent " fanning " of the spring leaves. When separate clips are provided for the spring, the sheet 10 may be recessed to accommodate them. The slots 12 have enlarged ends 13 adapted to lie over a corner of the spring. U.S.A. Specifications 1,284,482 and 1,777,300 are referred to.
Patent GB-279534-A (GB)
Title: Improvements in or relating to compensating sea earths for submarine telegraphy
IPC: H04L5/14
Filed: 1926-06-30
Abstract: 279,534. Tinsley, H., and Gall, D. C. June 30, 1926. Duplex telegraphs; eliminating effects of disturbing currents.-In a duplex cable system the core and sheathing of the battery sea-earth d are connected to the electrical mid-point e of the core and sheathing of the artificial line sea-earth c and the main cable a is sheathed separately from the sea-earth cables. The latter may be in the same or in separate sheathings. In the preferred arrangement each of the three cables is in its own sheathing with the connections as shown in Fig. 1. In a modification, Fig. 3, the battery sea-earth cable d is looped back as shown, so that the current flows in both directions into the electrical mid-point e. The looped part may be a cable of low resistance separately-sheathed as indicated.
Patent GB-165055-A (GB)
Abstract: 165,055. Auto-Combinator Soc. Anon. June 14, 1920, [Convention date]. No Patent granted (Sealing fee not paid). Guarding against unauthorized use.-A rotatable member, such as a shaft, is adapted to be secured against rotation, to prevent unauthorized use thereof, by means carried by a casing connecting the divided parts of a sleeve enclosing the shaft &c., and the casing is provided with a cover adapted to be secured thereto by means within it, and to be released therefrom only when the shaft is free. As applied to a motor-vehicle, the steering-column 50 carries a pinion 51 between the divided parts 55, 52 of the enclosing sleeve. A tooth w is carried by a slidable plate v operated by an eccentric u, and is adapted by its movement to be engaged with or disengaged from the pinion. A shaft s, carrying the eccentric, is operated by a handle t, and may be locked by engaging the tooth x of a combination lock in a slot in the hub of the eccentric. The combination lock is operated by a knob 25. The casing 54 carrying the locking means is secured to the parts 52, 55 by screws h which can be inserted or removed only when the cover k is removed. The cover carries pivoted catches l engaging stops m on the casing. When the tooth w is in locking position a lug z on the sliding plate v engages one of the catches and prevents their release. The catches are provided with two spring-controlled bell-crank levers p, and a bell-crank lever o engaging a sliding bush q. A push-button r connected with the bush is operated to release the catches l when the tooth w is disengaged from the pinion 51 to obtain access to the interior of the casing.
Patent GB-863425-A (GB)
Title: Oriented polyacrylonitrile film and process of manufacture
IPC: B29C55/00
Filed: 1959-05-14
Abstract: 863,425. Polyacrylonitrile films. DU PONT DE NEMOURS & CO., E. I. May 14, 1959 [June 2, 1958], No. 16633/59. Addition to 760,076. Drawings to Specification. Class 2(2). The process of the parent Specification (wherein an aqueous dispersion of a water-insoluble organic polymer, such as an acrylonitrile homopolymer or copolymer, in an aqueous solution of a metal salt, said salt being one which in concentrated aqueous solution dissolves the polymer and which is present in a proportion of at least 50% by weight of the polymer but in a proportion insufficient to form a salt solution which dissolves the polymer, is formed into the shape of a shaped article such as a film, water is evaporated from the shaped dispersion until the polymer particles coalesce, and salt is washed from the resultant shaped article) is modified in that a dispersion of an acrylonitrile homopolymer or copolymer containing a molar ratio of polymer to solvent salt of 0À5 to 6, and from 60 to 98 mole per cent of water, based on a total of 100 mole per cent of the polymer, salt and water, is formed into the shape of a film and, after water has been evaporated from the film until coalescence occurs, the film is stretched in a gaseous atmosphere to elongate at least one dimension of the film while maintaining the mole per cent of water between 30 and 80. Thereafter the salt is washed from the stretched film and the film is dried while maintaining it under tension effective to restrict its shrinkage during both washing and drying. In an example, an aqueous dispersion of polyacrylonitrile is prepared by agitating in a closed vessel in an atmosphere of nitrogen 0À10 part of potassium persulphate, 1À0 part of sodium lauryl sulphate, 120 parts of water and 80 parts of acrylonitrile. Into 160 parts of the dispersion at -4‹C. there is stirred 240 parts of 28% aqueous calcium thiocyanate solution at -7‹C., the mixture is cast at room temperature as a coating on a glass plate, the coating is partially dried and the resultant film is stripped from the plate in air at about 25‹C. and 50% R.H. The film is then biaxially stretched and, while in the stretched condition, washed with water at room temperature and dried. The dispersed polymer may be a copolymer of acrylonitrile with up to 25% of at least one other vinyl-type monomer such as styrene, acrylic and alkacrylic esters, methacrylonitrile, vinyl stearate, vinyl acetate, vinyl chloride, a vinylarylsulphonic acid or its salt, N-vinyl pyrrolidone, or 2-methyl-5-vinyl pyridine. Specifications 586,881, 597,368 and 765,585 also are referred to.
Patent GB-395860-A (GB)
Title: Improved rotary means for boring earth
IPC: E21B19/08
Filed: 1932-06-13
Abstract: 395,860. Boring earth. SKWORZOW, M. M., 14, Krasnoarmeyskaya, Baku, U.S.S.R. June 13, 1932, No. 16719. [Class 85.] In a device for automatic feeding of the bit in rotary earth-drilling wherein a winch is driven by a worm, the direction of rotation of the worm being controlled by axial pressure of the bit on the working face, the worm is driven by an adjustable friction disc through a roller adapted to pass over the centre of the disc to reverse the drive. The drill is suspended from rope K passing round drum L which, during automatic drilling, is connected by clutch F1, sprocket Z1, and chain c1, to a worm wheel in mesh with a worm X1 ; slidable on the shaft of the worm X1 is a roller O driven by a friction disc i adjustable towards the roller and driven from an independent source or from the line shaft W2 through clutch F2 and chain C2. A variable weight G3 is connected through lever Y to the rope K ; excessive feed causes slackening of the rope K and lever Y moves outwardly, the weight G3 then contacting a counterbalanced lever R1 which, through link R2 and lever R3, moves the roller O and causes reduction or reversal of the feed. The worm X1 may be driven by handle S when desired.
Patent GB-322776-A (GB)
Title: Improvements in or relating to television apparatus and the like
IPC: H04N3/04
Filed: 1928-06-09
Abstract: 322,776. Baird, J. L., and Television, Ltd. June 9, 1928. Television.-Relates to transmitters for use in colour-television systems of the kind described in Specifications 266,564, 267,378, 314,591, 321,389. (1) Three differently coloured lamps 2, 3, 4, Fig. 1, acting in succession throw a moving spot of light on to the object through scanning- spirals 6, 7, 8, which are respectively individual to them. The lamps may be switched on in succession by a commutator 9. Alternatively (2) the object may be illuminated as a whole by coloured lamps 10, 11, 12 which are exposed in succession through a slot 14. The object is then scanned by spirals 19, 20, 21 co-operating with light sensitive cells 16, 17, 18. Alternatively (3) a single lamp emitting red, blue and green rays, such as a neon and mercury-vapour lamp, may be exposed through three colour screens (Fig. 3, not shown) mounted in the scanning disc and coming in successively into action. Colour-filters and density filters for use in the above methods are particularized in the Specification.
Patent GB-378579-A (GB)
Title: Improvements in and relating to electric stop actions for organs and the like
IPC: G10B3/10
Filed: 1931-06-09
Abstract: 378,579. Electric stop actions for organs; switches. COMPTON ORGAN CO., Ltd., J., Chase Road, Willesden, and TAYLOR, J. 1., 35, Ramillies Road, Bedford Park, both in London. June 9, 1931, No. 16815. [Class 88 (ii).] In an electric stop action for organs, any combination of stops may be " set by any one of a number of combination switches. Corresponding to each stop is a column of forwardly projecting spring contacts b which may be simultaneously lifted by an insulating sliding strip e on operation of the appropriate stop selector magnet e<2>, which magnets are connected through the " on " contacts of their stop keys to the positive main. Co-operating with the contacts b are horizontal insulating rods g and conducting rods h rocking together on conducting pivots f connected to the positive main at i. Two sets of electromagnets m, n rock the rods in opposite directions from a central spring-controlled position. To set a selected combination, the stop keys (not shown) corresponding thereto are depressed, and a " set piston switch p is operated to close contacts o<2>, o<1> by energizing a magnet o<4>. The particular selector magnets e<2> thus energized lift the corresponding columns of contacts b against the underside of the insulating rods g. The particular " stop combination switch " k which it is desired should eventually bring the combination on is now operated and energizes its corresponding " set piston magnet " m to rock the corresponding pair of rods g, h away from the strip e. This allows those of the raised contacts b which lie in a single horizontal row to rise still further, so that, on release of the combination switch k and consequent return of the rods g, h to normal position, and on release also of the set piston switch p breaking at o<2> the circuits of the selector magnets e<2>, the particular contacts b will rest on the upper side of the insulator rod g. Other combinations may similarly be set employing contacts b in other horizontal rows, each combination being allocated to a particular combination switch k. To bring on a previously set combination, the combination switch k allocated thereto is operated, this time without the switch p. The corresponding " combination piston magnet " n is thus energized through contacts o<3>, o<2>, rocking its rods g, h towards the strip e so that the set contacts b rest on the conducting bar h. A similar contact b<3> in the same row also contacts with the bar h, closing a canceller switch d by a magnet d<3>. This switch d allows current to pass, through contacts c<3>, c<1>, to the " off " mechanisms of all stops for which the magnets b<1> are not energized. The contacts b which are contacting with a rod h, however, energize the magnets b<1> of the selected combination, allowing current from the switch d to pass through the contacts c<3>, c<2> to the "on" mechanisms of those stops.
Patent GB-459482-A (GB)
Title: Improvements in and relating to telescopic umbrella frames
IPC: A45B19/04
Filed: 1936-06-17
Abstract: 459,482. Umbrellas. ZIEROLD, A., Fl÷ha, Saxony, Germany. June 17, 1936, No. 16840. Convention date, Aug. 1, 1935. [Class 134] An umbrella comprises telescopic stick and ribs and, when the stick and ribs have been expanded, the adjacent ends of the telescoping portions of each of the ribs are simultaneously locked so that the umbrella can be opened and closed in the usual manner. Each rib comprises an inner part a slidable in an outer part b and a projection on the member a is adapted to slide in a slot in the part b. A recess is provided in the slot so that upon relative rotation of the rib parts the projection engages in the recess to look the parts in their expanded condition. A slotted stick part g slides within the part k, and a spring n is arranged so that the end n<1> of its longer limb engages in the slot l and the end m of the shorter limb passes through the slot and engages with a hole in the stick part k. A lateral extension of the slot is provided so that when the stick is expanded, the parts thereof are rotated with respect to each other to rotate the runner i and stretcher f so that the ribs are locked in their expanded position.
Patent GB-116069-A (GB)
Title: Improvements in or relating to Sparking Plugs for Explosion Motors.
Inventor: CEFFALI ANGELO
IPC: H01T13/56
Filed: 1917-11-15
Abstract: 116,069. Ceffali, A. May 10, 1917, [Convention date]. Sparking-plugs. - The inner portion G of the mica insulation is shaped conically so that there is a tendency for it to be tightened by the engine compression within a correspondingly-shaped opening in the plug casing. Perforations and slots for cooling are formed in the parts H, E. The outer portion D of the insulation consists of fibre. The sparking-terminal L is shaped as shown in Fig. 3.
Patent GB-259284-A (GB)
Title: Improvements in and connected with transmission gearing
IPC: G01G23/26
Filed: 1925-07-02
Abstract: 259,284. Avery, Ltd., W. & T., and Sykes, C. M. July 2, 1925. Indicating. - In rack and pinion gearing for use in the indicating mechanism of weighing-machines &c. and for other purposes, the rack 6 is circular or segmental and has a plain portion 6<b>, which may either be flattened or recessed as shown in Fig. 5 and engages a bearing-roller 9 maintaining the rack in gear with the pinion 7 driving the pointer or dial &c. The rack is supported on a spring 12 secured to the draw rod connected to the levers or other operative part of the weigh. ing mechanism, the spring being adjustably secured to the rod by nuts 10 and a relatively heavy distance piece 11.
Patent GB-1510024-A (GB)
Title: Process for recovering methionine and potassium from recycle solutions
IPC: C07C313/00
Filed: 1975-04-24
Abstract: 1510024 Methionine DEUTSCHE GOLDUND SILBER - SCHEIDEANSTALT 24 April 1975 [2 May 1974] 17008/75 Heading C2C A process for making methionine comprises (a) hydrolysing 5-(#-methyl-mercaptoethyl)- hydantoin at an elevated temperature and pressure with an aqueous solution of potassium carbonate or bicarbonate whilst removing ammonia and carbon dioxide (b) precipitating methionine from the resulting solution with carbon dioxide (c) concentrating the mother liquor remaining after the separation of methionine (d) carbonating this mother liquor whilst cooling it whereby to precipitate further methionine and potassium bicarbonate and (e) returning at least part of the mother liquor to the initial reaction mixture or discharging it to the environment.