baber/WOPTO huggingface dataset:
Patent GB-273643-A (GB)
Title: Improvements relating to railway traffic controlling apparatus
IPC: B61L3/22
Filed: 1926-11-01
Abstract: 273,643. Westinghouse Brake & Saxby Signal Co.., Ltd., (Assignees of Bossart, P. N.). June 30, 1926, [Convention date]. Track apparatus actuating signals on trains.- Apparatus carried upon the train includes an inductive pick-up circuit adapted to supply current to operate an amplifier which permits the supply of current to a tuned filter circuit from which governing devices are operated. The track rails 1, 1<a> are supplied with alternating current from the generator G when traffic conditions cause the closure of the switch 15. Two cores 2, 2a with windings 3, 3a are carried by the train in inductive relation with the rails. The windings are included in the pickup circuit D with a condenser 4 and a resistance 5 for adjustment purposes, and the winding 6 of the amplifier A. The amplifier armature 8 varies the pressure on carbon granules 10 to vary the current passed by the battery 13 through the primary 12 of the transformer T. The secondary 14 supplies current to the filter circuit J which includes a condenser 16 and an auto-transformer M. A direct current relay K is connected across the windings 18, 19 of the auto-transformer through rectifiers 20, 21 and the relay arm 23 completes a circuit with one of the contacts 23a, 28<b>. When the track rails are supplied with current, the pick-up circuit is energized and amplified currents flow through the circuits B, J and the relay arm 23 is lifted to close the circuit including the lamp 24. To diminish the influence of stray currents the pick-up circuit is tuned to resonance at a frequency slightly below that of the train controlling current, and it has a high decrement. The amplifier is mechanically untuned and the filter circuit J has a low decrement and is tuned to resonance at a frequency slightly higher than that of the train controlling current.
Patent GB-358235-A (GB)
Title: Improvements in doors for rolling shutters and the like
IPC: E06B9/17
Filed: 1930-09-15
Abstract: 358,235. Wicket gates. DENNISON, KETT, & CO., Ltd. and MOSS, D. J., 11, Queen Victoria Street, London. Sept. 15, 1930, No. 27508. [Class 20 (iii).] A hinged wicket door or gate 11 for a rolling shutter, blind or the like 10 is normally prevented from opening by hinged flaps or the like 13, which are connected by links 16 to a lever 17 on a spindle 18 carrying an operating handle 19 on either side of the door. In the form shown, the flaps 13 are mounted on hinges 14 on the outside of the door and are attached to bent plates 13a hinged at 15 to the links. On turning either handle 19, the flaps are swung outwardly from the door which may then be swung inwardly on the hinges 12 clear of the shutter. One link has a slotted lug 20 adapted to be engaged by the latch of a lock 22. In a modification in which the door opens outwards, the flaps are hinged to the inside of the door and connected by hinges to the links, the lever being provided with a slot for engagement by the latch of a lock.
Patent GB-853958-A (GB)
Title: Improvements in or relating to space heating appliances
Inventor: WRIGHT WILLIAM EDWARD
IPC: F28D1/053
Filed: 1955-09-28
Abstract: 853,958. Ventilation. WRIGHT & CO. Ltd., J. S. Dec. 28, 1956 [Sept. 28, 1955; Dec. 17, 1955], Nos. 27561/55 and 36241/55. Class 137 [Also in Groups XI and XIII] Hollow radiating units for the flow therethrough of hot air each have a concave face, e.g. of parabolic section, and are mounted adjacent the walls of a room in two groups, one along the floor and the other along the ceiling (see Group XIII) and one or more of the units have outlet grilles for the air to pass into the room. Figs. 2 and 8 indicate different shapes of radiating unit.
Patent GB-1481785-A (GB)
Title: Radiography
IPC: G01N23/04
Filed: 1974-09-05
Abstract: 1481785 Radiography EMI Ltd 5 Sept 1974 [9 June 1973] 27569/73 Heading H4F A data processing arrangement for providing quickly a visual representation of a planar section through a body from absorption signals generated by X- or γ-ray scanning apparatus 1 of the type described in Specification 1,283,915, wherein the sets of absorption value signals f(r,#), each set corresponding to a different value of # (Fig. 1, not shown), are passed to a store 2 where they are held until required by a fast Fourier transform computer 3 which effects a one dimensional Fourier transform thereon with respect to the variable r (in any one set the values of r are selected so that the beam positions of the set are equally spaced). The resulting transform signals which are functionally related to two variables (# and #, Fig. 3, not shown) are then applied to modulate a faster scan of a photochromic tube 4 of the type disclosed in Specification 1,382,993, the cathodo-chromic crystal target of which is uniformly exposed to coherent radiation from a laser 5 and the resulting modulated radiation is incident via a lens 7 on a television type camera tube 8, the lens 7 having equal focal distances f and being a distance f from both tubes 4 and 8. Thus the pattern of radiation intensity incident upon the target of camera tube 8 is the two-dimensional Fourier transform of the pattern of radiation intensity emergent from the photochromic target of tube 4. The resulting video output of camera tube 8 may be displayed, stored on magnetic tape, or fed to a print-out machine. If desired camera tube 8 may be replaced by a photographic plate or a viewing screen for direct image viewing. The fast Fourier transform computer 3 may be replaced by optical apparatus serving the same end and following the principles of transformation performed by lens 7 although in this case transforming with respect to a single variable of transformation only and not two. A second embodiment based on the so-called layergram procedure is described with reference to Fig. 4 in which for each small region (element) of the body a signal is derived 20 which is related to the average of the absorptions signals of all the beams passing therethrough. These layergram signals are generated in synchronism with the sanning of a photochromic tube 21 which is illuminated by laser 22, the resulting Fourier transform of the pattern of light emergent from tube 21 being televised 25. The resulting signal is multiplied 24 by a factor K (see Specification) and applied to a second photochromic tube 25<SP>1</SP> illuminated by a laser 26, a signal representative of the absorption function being produced by a camera tube 28. An optical filter may be associated with the second photochromic tube instead of using multiplier 24.
Patent GB-751457-A (GB)
Title: Improvements in bobbin tubes
IPC: D06B23/04
Filed: 1954-09-23
Abstract: 751,457. Bobbins. SCHOLL AKT.-GES. ZOFINGEN. Sept. 23, 1954 [Dec. 8, 1953], No. 27571/54. Class 120 (3). An axially compressible bobbin for use in the wet treatment of yarn packages comprises two cages 1, 2, Fig. 1, urged apart by a compression spring 11, each cage being made up of a number of support members 4 (cage 1), and 9 (cage 2), consisting of wires bent into the shape of a hairpin, the free ends of which are welded to end rings 3, 8, the bent portions 6, 10 of the wires engaging over a retaining ring 7 so that this ring passes alternately first through a bent portion 6 on one cage and then a bent portion 10 on the other cage. Fig. 3 shows a modified arrangement in which adjacent pairs of support members of a cage are formed from a single piece of wire, each such piece of wire being bent to form two hairpin bent wires 9 interconnected by a part 12 which projects through a slot 13 in the associated end ring 14. The resulting twin support member is attached to ring 14 by bent parts 15 at its extremities engaging through holes 16 in a flange 17 on ring 14. Instead of using wire, the support members may consist of longitudinally slotted metal strips or, if desired, the whole device may be made of synthetic plastic. Further, instead of being cylindrical the cages may be made of tapering shape so that in the extended position the whole tube is frusto-conical.
Patent GB-433012-A (GB)
Title: Improvements in, or relating to, drill shafts and bits adapted to be used with percussive drills
IPC: E21B10/36
Filed: 1934-09-26
Abstract: 433,012. Percussive drill steels. BEDFORD, R. A., Grange Farm, Stumperlowe, Sheffield. Sept. 26, 1934, Nos. 27651/34 and 449/35. [Class 124] [See also Group XXII] Percussive-drill steel shafts, bits, and connectors are formed with a socket in one end to receive a projection on the corresponding part. This socketed end is first hardened and tempered and is then coated with a layer of softer metal, e.g. copper, by electrolytic deposition, spraying or brazing. Specification 337,617, [Class 124], is referred to.
Patent GB-995692-A (GB)
Title: Bracket
Inventor: WARDLE HAROLD VERNON
IPC: A47H2/00
Filed: 1963-07-12
Abstract: 995,692. Brackets; curtain pelmets. NORMAN VERNON (IMPORTERS) Ltd. May 27, 1964 [July 12, 1963], No. 27665/63. Heading A4B. A bracket for securing box pelmets to window frames comprises an angle member with limbs 10, 11 and triangular stiffeners 12 defining slots 13 between themselves and limb 11, and a stirrup member including a cross-piece 16 extending between lugs 17, 17 and defining a recess 16a, the angle member being secured to the pelmet and engaging the stirrup member, which is secured to the window frame, so that the part 16 enters slots 13.
Patent GB-407427-A (GB)
Title: Improved device for preventing down draughts in chimneys, ventilating shafts, and the like
IPC: F23L17/02
Filed: 1932-10-05
Abstract: 407,427. Chimney &c. tops. MUSGRAVE, J. L., and CRITTALL & CO., Ltd., R., 43, Bloomsbury Square, London. Oct. 5, 1932, No. 27697. [Class 25.] A chimney, ventilating shaft or like top comprises a plurality of horizontal flat plates or discs A, B, D, E spaced apart one above the other, the diameters of the plates decreasing from the uppermost plate downwards, the lowermost being slightly larger than the external diameter of the chimney or like shaft F and each plate below the uppermost having a central opening, the openings decreasing in diameter from the lowermost plate upwards, that in the lowermost plate approximating to the internal diameter of the shaft. The opening a<1> in the lowermost plate A is formed with a flange a' projecting into the shaft F. The plates are held in position by bolts f<1> passing through the plates and through a flange f<3> formed around the mouth of the shaft. If desired the flange f<3> may constitute the lowermost plate.
Patent GB-647218-A (GB)
Title: Improvements in or relating to the production of hydrofluoboric acid from calcium fluoride
IPC: C01B35/06
Filed: 1947-10-16
Abstract: Hydrofluoboric acid is produced by decomposing calcium fluoride (fluorspar) with aqueous sulphuric acid and boric acid at 60 DEG  C. up to boiling, removing insoluble material, chiefly calcium sulphate, and precipitating remaining sulphate ions with benzidine at 0 DEG  C. to room temperature.  Prior to the addition of benzidine, part of the sulphate may be precipitated by lime, 80 per cent say of the stoichiometric amount being used.  The hydrofluoboric acid may be employed for the production of p  aluminium fluoride as in Specification 647,217.  Specification 647,216 also is referred to.
Patent GB-265295-A (GB)
Title: New system of road making
IPC: E01C5/16
Filed: 1926-07-23
Abstract: 265,295. Graham, C. K. July 23, 1926. Segmental and block paving; foundations. - Roads are formed of metal plates which are arranged to overlap by rabbeting the edges of one pair of adjacent sides on the, upper face and the edges of the other pair of sides on the lower face, as shown in Fig. 2. Studs C are provided on both surfaces of the plates. The plates may be laid on sand F, or on arches formed of brick, concrete, &c., supported on piles of the kind described in Specification 20074/97, [Class 20, Buildings &c.]. A bituminous cord D and bituminous filling E may be arranged between the plates to form a waterproof joint as shown in Fig. 5.
Patent GB-700453-A (GB)
Title: Improvements in sawtooth current generators
IPC: H03K4/34
Filed: 1948-10-28
Abstract: 700,453. Saw - tooth generating circuits. MURPHY RADIO, Ltd., SMITH, R. B., and FAIRHURST, H. A. Oct. 28, 1949 [Oct. 28, 1948], No. 28029/48. Class 40 (6) In a saw tooth current generator of the type comprising a screen grid valve having a transformer coupling the anode and screen grid circuits, adjustable means are provided for generating an induced voltage in the screen grid circuit as a result of a diminution of the rate of rise of anode current or diminution of screen grid current towards the end of the long flank of the saw tooth wave. This induced voltage increases the length of the long flank. The induced voltage may be provided by a variable inductor 10 in the screen grid lead, by an additional transformer with a variable core coupling the anode or screen grid circuits or by the existing transformer. In the latter case the transformer has an adjustably tapped secondary or an adjustable core. Damping resistors may be connected in series with or across the additional inductor and a synchronizing signal may be applied to the control grid of the valve. The screen grid may be connected to a positive H.T. supply. Specification 643,993 is referred to.
Patent GB-1113769-A (GB)
Title: Core memory testers
IPC: G11C29/50
Filed: 1966-06-23
Abstract: 1,113,769. Magnetic storage arrangements. INTERNATIONAL BUSINESS MACHINES CORPORATION. 23 June, 1966 [1 July, 1965], No. 28031/66. Heading H3B. In a magnetic storage matrix of the type in which one-half select currents are applied to X and Y drive lines for writing and reading, and in which writing of a " one " is prevented by applying a one-half inhibit current to a sense/ inhibit line common to the storage cores, testing for optimum current values is effected by repeatedly carrying out write and read cycles during which either the inhibit current or both select currents are varied, the limit of current variation being indicated by an error signal produced when parity between information read into and extracted from the store is no longer obtained. The principle of the test and an example of a closed curve obtainable from the test results is shown in Fig. 5, in which the intersection of the XY (DRIVE) and Z axes denotes select current and inhibit current values, respectively, of suitable nominal values within the satisfactory operating range to commence the test. Basically the test involves the use of a driven potentiometer to increase the inhibit current to a value at point A at which a writeread error signal occurs, the drive current being kept constant. This error signal is produced during read-out as the outcome of conflict between a parity bit and the parity of a stored word. The inhibit current is then reduced until at point B an error signal is again obtained. The test is repeated for a higher value of drive current C, subsequent incremental increases of drive current being terminated when a point D is reached at which an error signal is obtained before the inhibit current is varied. The test is repeated with drive current values reduced incrementally to the left of the inhibit current axis of Fig. 5. The closed curve is obtained by linking the error points, optimum current values being contained within the largest circle which can be drawn within the closed curve, Fig. 4 (not shown). Modifications of the test are described with reference to Figs. 6 and 7 (not shown), for closed curves which are respectively asymmetric with respect to one axis or the other or are generally diagonally disposed with respect to the axes. The inhibit current can be varied smoothly, incrementally or by both methods in combination. Circuits are described in outline, Figs. 1, 2, 3 and 12 (not shown) for applying the test programme to the storage matrix.
Patent GB-228970-A (GB)
Title: Improvements relating to automatic feeding mechanism for sheet printing machines
IPC: B65H9/10
Filed: 1923-11-07
Abstract: 228,970. Evans, A. B. Nov. 7, 1923. Sheet separators and registering-devices; pile supports.-Sheets are fed automatically to printing-machines by a mechanism which allows the overall length of the combined feeding and printing machines to be reduced, the sheets being registered on the pile and being carried from the rear of the pile by a suction-separator oscillating in an epicycloidal path which reverses the sheets and delivers them to the grippers of the printing-machine at the same speed as the grippers. The top sheets are registered successively against lays a, Fig. 2, by a reciprocating suction device f pivotally mounted on a sliding block d operated by a rack d<1> engaged by an oscillating gear wheel e<1>. The arm f<1> of the suction device. f is normally kept raised by a spring-controlled arm g, and is released from same when adjustable nuts g<4> on a rod g<2> connected to the arm g abuts against an adjustable stop b<2>. The sucker f then falls on to the pile c and engages the top sheet. The block d is then reversed and the sucker moves to the right, carrying the sheet against the lay a. The suction is then cut off and the suction arm, f<1> raised to normal position by a cam a<1>. A similar suction registration sheet is secured and carried forward to the grippers n<2>, Fig. 5, of an impression cylinder n by a suction nozzle i carried by a pair of hollow arms mounted on a shaft j y which is freely mounted in a pair of bell cranks k which are oscillated by a cam o<2> on a shaft o geared to the impression cylinder. A second pair of cams o<3> oscillates a pair of bellcranks l fixed on a shaft l<1> which is thus oscillated by the cams o<3> and operates a sector m gearing with a wheel m<1> fixed on the shaft j. As the bellcranks k oscillate towards the cylinder n the sector m is moved to rotate the gear m<1>, and the suckers i thus move in an epicycloidal path. The suction is controlled by valves so arranged that the suction is cut off as the sheets are taken by the grippers n<2>. Stops q limit the movement of the sector m.
Patent GB-596696-A (GB)
Title: Improvements in or relating to gas driven turbines
IPC: F02C7/00
Filed: 1945-10-24
Abstract: 596,696. Gas turbines, FAIREY AVIATION CO., Ltd, and FORSYTH, A. G. Oct. 24, 1945, No. 28073. Convention date, Dec. 13, 1944. [Class 110 (iii)] Steam generated in a cooling jacket of a gas turbine is used as a separate driving fluid in the turbine. The steam and some of' the vapour resulting from combustion are condensed and returned to the initial water reservoir. In the plant shown, a pump 56 takes water from a reservoir 55 and delivers it to the rear end of a helical water channel 59 in the turbine casing 58. The pump is regulated to transmit the amount of water that will evaporate in the channel 59 and the resultant steam is received within a chamber 62. The steam passes through a perforated wall 63 into a header 65 and to spaces 67 in the walls of the combustion chambers 21. The steam is superheated there and then passes through nozzles 69, which alternate with the combustion chambers, to the turbine blading. The turbine exhaust goes through an air-cooled heat-exchanger 70, where the steam is condensed. The water is extracted by a pump 79 and returned to the reservoir 55. The turbine blades 17 and the outer blades 15 of a contrarotating compressor are mounted on a drum 14, connected to a shaft 50, which drives an airscrew 33 through an epicyclic reduction gear 46. The shaft 10, carrying the inner blades 13 of the compressor may be held stationary or geared to run oppositely to the drum 14 by means of a clutch 53. Specifications 583,591 and 596,672 are referred to.
Patent GB-620606-A (GB)
Title: Improvements in or relating to roller thrust bearings
IPC: F16C19/30
Filed: 1944-07-05
Abstract: 620,606. Roller bearings. ABLETT, C. A. July 5, 1944, No. 28114/46. Divided out of 620,564. [Class 12 (i)] A roller thrust bearing in which radially disposed cylindrical thrust rollers are carried in a cage comprising one or more separate concentric rings e, f, g, has the cage e, f, g free at its outer periphery but supported concentrically with the shaft a by a series of rollers h having their axes parallel to the shaft. , The thrust rollers preferably comprise a plurality of adjacently arranged relatively short rollers d and run on race rings m housed in grooves formed on the thrust-imparting collar b of the shaft and on the abutment block c; the race rings and grooves are so curved at their bases that the race rings can deflect to present a full bearing face to the rollers. The separate cage rings e, f, g are diametrically divided for assembly round the shaft and are held in position by a divided outer ring k secured to the outermost cage ring g with its line of division at an angle to that of such cage ring g. To compensate for the deflection of the shaft collar b and abutment block c under load, the rollers may be of slightly greater diameter in the succeeding outer cage rings so as to give proper contact or the outer race rings may be staggered axially inward and thrust rollers all of the same diameter may be used. Alternatively, the shaft collar and the abutment block may be supported, the one peripherally and the other centrally as described in Specification 620,607, whereby the gap though deflected remains uniform in width. The shaft may have a plurality of collars co-operating with a plurality of abutment blocks. Specification 620,564 also is referred to.
Patent GB-704814-A (GB)
Title: Improvements in or relating to troughs for endless chain scraper conveyors
IPC: B65G19/28
Filed: 1951-11-30
Abstract: 704,814. Endless scraper conveyers. DRIESEN, J., [trading as BISCHCFFWERKE KOMMANDIT-GES.]. Nov. 30, 1951 [Dec. 14, 1950], No. 28117/51. Class 78(1) A trough for an endless chain scraper conveyer composed of individual sections detachably connected together in end-to-end fashion, each section consisting of two identical trough section portions the floors of which are connected with each other with a gap between them is characterized in that the floor of each trough section portion is extended at one end in the longitudinal direction of, and beyond the side walls of, the trough section portion, said extended part 'of the floor being cranked out of the plane of the remainder of the floor to enable it to enter the gap between the two floors of the adjacent trough section. In the embodiment shown wherein each section comprises upper and lower trough members 1, 2 connected by U-pieces 5 welded to the floors 3, 4 of the members 1, 2, the cranked extension 7 of the floor 3 of one section extends under the corresponding floor of the adjacent section whilst a cranked extension 8 of the floor 4 extends over the end of the corresponding floor 4 of the adjacent section. The sections are secured to one another by cranked tongues 10 at the end of one section which extend between strips 12, 13 at the end of the adjacent section, bolts 14 being driven through holes 15, 16 in the strips 12; 13 and through holes 11 in the tongues 10. These tongues are tapered or rounded at their ends to permit inclination of adjacent sections with respect tb one another in the vertical direction.