baber/WOPTO huggingface dataset:
Patent GB-1055517-A (GB)
Title: Improvements in and relating to gear pumps
IPC: F04C15/00
Filed: 1965-05-12
Abstract: 1,055,517. Gear pumps. M. TUROLLA. May 12, 1965 [May 12, 1964], No. 19990/65. Heading F1F. In a gear pump having intermeshing gear wheels rotatably journalled in bearing plates 8, Fig. 2, supported in a pump housing 1 having end covers 4, 5, with at least one, as shown both bearing plates, axially movable in the pump casing, the axially movable bearing plate or plates is or are formed with hub portions 12 sealing by projecting into bores in the end covers which are offset from the centre plane defined by the gear wheel axes towards the suction side 2 of the pump. Chambers 14 behind the hub portions 12 communicate through bores 16 with the suction side of the pump and chambers 17 surrounding the hub portions through bores 18 with the discharge side of the pump. The centre of pressure of the uniformly distributed pressure acting on the rear surface of each bearing plate is thus in the alignment with centre of pressure of the variable counter-pressure acting on the front surface of each plate to prevent tilting of the plate to reduce wear on the gear wheels, the plates and the bearings. The gear wheels bearing plates and shafts may be removed as a single unit.
Patent GB-892926-A (GB)
Title: Improvements in dry metal rectifier assemblies
Inventor: BUTT KENNETH STANLEY
IPC: B29C41/46
Filed: 1959-06-11
Abstract: 892,926. Rectifiers. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. June 3, 1960 [June 11, 1959], No. 20008/59. Class 37. A dry rectifier assembly comprises a cupshaped portion 1 containing a rectifier element 4 with an aperture 2 for the first electrode and which is externally threaded so that it may be screwed into a helical spring 5 which has a bent portion 6 contacting a spacer connected to the rectifier to provide the other electrode. The threaded portion does not extend to the end of cup member 1, thereby to provide a region over which spring 5 is tensioned.
Patent GB-215235-A (GB)
Title: Improvements in and relating to locks
IPC: G07F17/14
Filed: 1923-08-04
Abstract: 215,235. Alberry, E. Aug. 4, 1923. Fastenings for doors. - A lock for lavatories &c. is adapted to be opened, after payment of a fee, by an attendant provided with a key, the coin or coins inserted being maintained in front of a window, until the lock is operated, for inspection by the attendant. The lock has a pivoted latch d, which is actuated by a key inserted between guides 14 to engage a pivoted leg o of a pivoted dog m. When the key is turned the leg o engages an arm 17 of the latch and raises it. The latch is lifted from the inside by a dog 20 on the shaft 21 of the inside handle engaging the inner end of the latch. The lock is attached by screws c passing through a plate a. It has a cover u which is secured in position by a downwardly projecting lip v engaging behind flangesw on the plate a. and by a screw x passing through a lug y at the bottom of the cover. Exhibiting coins.- The coins are held in a chamber z, where they are visible through a window in the lock cover, by a lever 6 pivoted at 7. When the latch is lifted, a projection 8 thereon tilts the lever to allow the coins to drop into a money-box 4. Indicators.-An indicator f bearing the words ' engaged ' ' vacant ' on adjacent faces is pivoted between brackets h. It is turned to expose the word ' engaged ' by a leg l l of the dog m engaging a cam plate k depending from one of the faces. When the inside handle is turned a projection 24 of the dog 20 engages a third leg n of the dog m to restore this to normal position and the indicator returns by gravity to expose the word ' vacant.' Registering.-A counter r is operated by the top face of the indicator f engaging an arm 8 thereon when the latch is actuated by key. Money-boxes or receivers.-The money-box 4 is detachable and is secured by dowel pins at the bottom engaging holes in an angle-plate secured to the door, and by a lock at the top, the bolt of which enters an opening in the cover u.
Patent GB-785758-A (GB)
Title: A new or improved process for improving the electrical resistivity of concrete sleepers
IPC: C04B41/46
Filed: 1954-07-08
Abstract: 785,758. Impregnating-compositions for electric insulation. BOW-MAC (PRODUCTS), Ltd., ROBERTS, W. K., and BROWNE, F. J. July 1, 1955 [July 8, 1954], No. 20077/54. Class 140. The electrical resistivity of reinforced concrete railway sleepers is improved by first drying them to remove moisture at least to the depth to be impregnated and then impregnating them throughout or to a substantial depth with grease, wax or other water-repellant materials such as silicones, phenol-formaldehyde resin or paraffin wax. The sleeper may be dried by heating, e.g. by passing a current through the reinforcement or by heating in a vacuum or by vacuum drying alone. The impregnant may be applied melted or in solution in for example paraffin and the impregnant may be introduced with the sleeper into a vacuum chamber and then forced into the sleeper by applying pressure. Thermosetting resins may be cured by heating the impregnated sleeper.
Patent GB-205584-A (GB)
Title: Improvements in or relating to vanning machines for concentrating ores
IPC: B03B5/04
Filed: 1922-07-22
Abstract: 205,584. Maynard, A. V. T. July 22, 1922. Vanning-machines.-A vanning machine, for concentrating ores whilst in a wet pulp condition, is given an orbital movement parallel to itself in a path that lies in a. vertical plane and conforms substantially to an ellipse by means of two variable-throw eccentrics 25, 26, one of which 25 is preferably duplicated, pivotally linked to the table 10 and rotatable in unison, but out of phase with each other, about parallel axes transverse to the table. A third variable-throw eccentric 25<1> may also be used to constrain the table to move parallel to itself. The eccentric 25<1>, which is also preferably duplicated, is made to rotate in unison with the other two eccentrics 25, 26, and in phase with one of them 25, about an axis parallel to the axes of the other two, and is also pivotally linked to the table. The eccentric 26 is mounted on a shaft 14 which drives the eccentric shaft 15, 16 through transmission shafts 17, 18 and equal-sized bevel wheels 21-24, the eccentrics 25, 25<1>, 26 being connected to the table 10 by connecting-rods 29, 29<1>, 27 respectively. The separated material is pitched over the end of the table into a receptacle, and the waste material is washed off by clean water introduced on to the surface of the table. Means other than the eccentrics 25<1> may be used to constrain the table to move parallel to itself, and the table may be suspended from its operating means instead of resting on it, as shown.
Patent GB-759565-A (GB)
Title: Improvements in or relating to circuit arrangements for use in television receivers
IPC: H04N5/46
Filed: 1954-07-09
Abstract: 759,565. Television. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 9, 1954 [July 10, 1953], No. 20174/54. Class 40 (3). [Also in Group XL (c)] In a television receiver of the type in which the D.C. component of the signal is not applied to the cathode-ray tube, the gain of the receiver is controlled in dependence upon the brightest portion of the picture signal containing the D.C. component. The picture signal of the polarity shown at 5 is applied to the grid of a video amplifier 6, the anode of which is connected through a capacitor to the grid of the cathode-ray tube. The waveform 14 at the cathode of the amplifier is applied to the cathode of a normally non-conductive valve 15 to cause it to conduct and discharge a capacitor 19 on the occurrence of the brightest parts of the picture. The capacitor is charged through a rectifier 17 by pulses derived for example from the line time base and the voltage at the anode of the rectifier depends upon the amount the capacitor 17 is discharged and accordingly upon the brightest part of the picture. Part of this voltage is applied through lead 20 to control the gain of the receiver. A switch 22, 23, ganged with a station selector switch (not shown) feeds the video signal to the grid or cathode of a cathode-ray tube according to whether the signal is positively or negatively modulated. In the latter event the A.G.C. potential derived from the synchronizing signal peaks.
Patent GB-334984-A (GB)
Title: Landing gears for aeroplanes
IPC: B64C25/60
Filed: 1929-07-01
Abstract: 334,984. Bell, F. B. July 1, 1929. Shock - absorbers, applications of. - An aeroplane landing-gear includes shock-absorbing struts pivoted tc the wheel axle and tc the aeroplane body, each strut comprising telescoping tubes 16, 17, the inner tube 17 being slidably connected with a piston 27 working in the tube 16, while the piston is held in extended relation tc the tube 17 in the air by means of a spring 36 and has an orifice 28 through which liquid passes, the liquid and the spring 36 acting together to cushion the shock of landing. The liquid device is ineffective when the aeroplane is supported on its landing gear, the spring acting by itself. The spring 36 is maintained in compression by a cross-bolt 33 passing through the plunger 27 and through slots 34 in opposite walls of the inner tube 17 which extends well into the plunger. A reducing-collar 23 screwed to the outer tube 16 slidably engages the inner tube 17, liquid-tight packing being inserted. The plunger 27 is provided with a cup-washer 29 held in place by a plunger cap 31.
Patent GB-1209235-A (GB)
Title: Monoscope cathode ray tube
Inventor: BRENNER KURT H JR
IPC: H01J31/58
Filed: 1968-04-29
Abstract: 1,209,235. Cathode-ray tubes. SYLVANIA ELECTRIC PRODUCTS Inc. 29 April, 1968 [1 May, 1967], No. 20259/68. Heading H1D. A cathode-ray tube for generating signals corresponding to the scanning of a character or of a test pattern, comprises a secondary-emitting stencil electrode 45 (illustrated in Fig. 2, not shown) having a number of apertures defining a number of available characters and arranged between a secondary emissive electrode 51 and a collector band 43, and an electron gun including beam deflecting means 39 which are energized to select a required character and to scan the beam repetitively over the selected character. Although the drawing shows only one pair of deflecting plates 39, in practice a second orthogonal pair is also provided. In the normal mode of operation the electrode 43 is at a higher potential than the stencil electrode 45 which is at a higher potential than electrode 51. Then electrons striking the stencil 45 cause it to go positive due to secondary emission to electrode 43; electrons passing through the stencil cause it to go negative by collecting secondary electrons emitted from electrode 51. The tube may alternatively be operated to use only one of these two processes by changing the polarity of electrode 43 or of electrode 51 relative to the stencil electrode 45. The output signal is taken from electrode 45 and may be fed to a display device and to a printer (Fig. 1, not shown).
Patent GB-614114-A (GB)
Title: Improved combination hand tool
IPC: B25B13/14
Filed: 1946-07-06
Abstract: 614,114. Wrenches; screwdrivers. MACFARLANE, S. July 6, 1946, No. 20272. [Class 61 (iii)] A combination sliding jaw spanner has jaws projecting on either side of the shank a, jaw b adapted for use as a hammer and co-operating with jaw e for gripping nuts or bolts and toothed jaw c which is slotted at c<SP>1</SP> to form a nail claw co-operating with an opposed toothed jaw g for gripping pipes, the latter jaw guided for movement on an inclined ledge by pin i and slot h. The lower jaw f is adjustable on the shank a by a worm k mounted on an axle l pivoted at l<SP>1</SP> for releasing and removing the jaw when the hammer b is to be used. The end of the shank may be adapted as a screwdriver, tommy-bar, &c.
Patent GB-1185941-A (GB)
Title: A device for and a method of Measuring Mechanical Stress at Predetermined Strain
IPC: G01N19/00
Filed: 1968-04-29
Abstract: 1,185,941. Measuring theological properties, electrically. MONSANTO CO. April 29, 1968 [April 27, 1967], No.20317/68. Heading G1N. Apparatus for measuring the stress of a test specimen subjected to a cyclical strain variation by a test instrument, comprises a switch which is closed for a fraction of the strain cycle whereby to store the output voltage of a force transducer in a capacitor to obtain a signal proportional to the stress at that part of the strain cycle selected by the switch. The test instrument may be of the type described in Specification 1, 036, 904 in which the specimen, in the form of a pair of rubber discs, is subjected to a cyclical rotational strain. As shown in Fig.4, two switches are provided: switch 1 is closed momentarily at maximum positive strain and switch 2 is closed momentarily at maximum negative strain whereby to obtain a half-wave voltage doubling effect, capacitor B being charged to a voltage equal to the strain gauge output plus the voltage on capacitor A. A full-wave voltage doubling circuit may be provided. A differential transformer may be used instead of a strain gauge. The switches may be operated by a magnet (3) or cams or electrical pulses generated at appropriate moments. The apparatus may be operated at different strain cycle frequencies from 0 to 1100 cycles per minute and at different angles of rotation from 2 degrees to 6 degrees and may be used to obtain the scorch time, induction time, curing rate, optimum cure and reversion characteristics of rubber specimens.
Patent GB-565918-A (GB)
Title: Holder for surgical stitching instrument and accessories
IPC: A61B17/06
Filed: 1943-03-24
Abstract: A holder for a surgical stitching instrument S and accessories comprises a cylindrical casing 1 having one end closed and the other end open and having a pair of positioning-members 13, 14 as shown in Fig. 2 of Specification 565,916 for the accessory-holders disposed within and adjacent to opposite sides of the casing, a space being arranged between the accessory-holders sufficiently large to admit the stitching instrument.  The accessory-holders 15, 16 are formed with hooks 15a, 16a which take over the positioning members 13, 14, the holder 15 carrying spools 18, a spool winder 20 and a thread tensioning device 22x.  The holder 16 is of channel-section to carry curved needles 22, the shanks of which are gripped between the walls of the holder 16 and the points of needles being covered thereby.  In a modification, the needles are gripped and carried by spring clips riveted to the carrier at spaced intervals.
Patent GB-517867-A (GB)
Title: Improvements on treatment of iron ores preliminary to smelting
IPC: C22B1/24
Filed: 1938-07-09
Abstract: 517,867. Briquetting ores. HARBORD, F. W. July 9, 1938, No. 20354. [Class 82 (i)] Iron or other ores are briquetted with a cement binder produced by grinding together dry calcium hydrate and granulated blast furnace slag, with or without the addition of fluxes or carbonaceous material or both. The slag used is preferably water-granulated.
Patent GB-251155-A (GB)
Title: Improvements in dyeing cellulose esters
IPC: D06P3/40
Filed: 1925-08-14
Abstract: 251,155. Johnson, Y. J., (Badische Anilin & Soda Fabrik). Aug. 14, 1925, Azo dyes containing at least one monoethanolamino group are used for dyeing cellulose esters. The dyes may be employed in aqueous solution or suspension, with or without the addition of turkey red oil or other dispersing agents. In examples, cellulose acetate silk is dyed in orange or scarlet slades with the dyestuffs obtained (1) by diazotizing p-nitraniline and coupling with mono-ethanolaniline acetate or with mono-ethanol-m-toluidine, obtained by the action of ethylene chlorhydrin on m-toluidine by the process described in Specification 13956/04, [Class 2, Acids and salts, Organic &c.], and (2) by diazotizing 3-nitro-4-toluidine and coupling with mono-ethanol-aniline.
Patent GB-224303-A (GB)
Title: Improvements in magnetic brakes
IPC: F16D59/02
Filed: 1923-08-11
Abstract: 224,303. Holt, F. B., and Metropolitan- Vickers Electrical Co., Ltd. Aug. 11, 1923. Electric and magnetic; actuated or applied by springs; blocks acting on drums. - In an electromagnetic brake of the type in which the operating magnet is arranged coaxial with the brake drum, the armature is connected to the mid-joint of a toggle, the arms of which are pivoted to the levers carrying the brake blocks. The armature 2 is pivoted at one end to the casing 7 of the solenoid and carries at its other end a lug 14, pressed in one direction by an adjustable spring 16, and connected through a link 17 with the mid-joint of a toggle 19, 20. The ends of the toggle are connected to levers 22 pivoted to the frame and to the free ends of pivoted levers 3 carrying the brake blocks 4. When the magnet is energized the toggle is straightened to lift the blocks clear of the drum 5, the braking effort, when the magnet is de-energized, being supplied bv the spring 16. The brake blocks may be retracted by mechanical means.
Patent GB-822665-A (GB)
Title: Improvements in or relating to electrolytic cells
IPC: C25B9/14
Filed: 1957-06-28
Abstract: 822,665. Mercury-cathode electrolytic cells. MESSNER, E. June 28, 1957 [June 28, 1956], No. 20537/57. Class 41. An electrolytic cell having a mercury cathode comprises a vertical or nearly vertical hollow rotatable shaft 6 on which is mounted a series of horizontal or nearly horizontal substantially circular cathode plates 2 located one above the other, the upper surface of each plate being electrically conductive and the lower surface and upstanding peripheral rims 3 being electrically non-conductive, means, e.g. pipes 5, 11, respectively, for feeding mercury and electrolyte to the upper surfaces, and anodes 9 located over each plate 2. All the cathodes may be connected through the shaft 6, which is of conductive material, to a negative source of electricity and all the anodes through leads 10 to a positive source. Alternatively, each cathode may be electrically connected to the next underlying anode to provide a bipolar arrangement, baffles being employed to lengthen and narrow current paths through the electrolyte. The anodes may be graphite or, where sodium sulphate solution is the electrolyte, of a lead-silver alloy, diaphragms being then interposed between corresponding anodes and cathodes. The pipes 11 lead to an annular distributer 13 having holes 12. A flexible strip 1 made of or lined with a non-conductive material overlies each plate 2 adjacent the pipe 5 to form on each plate 2 a pool of mercury through which each plate 2 passes once per revolution of the shaft 6. Amalgam passes through passages into the shaft 6 where it may be decomposed, and gaseous products pass radially beneath each plate 2 to an enclosing shell 16 up which it passes to an outlet. Spent electrolyte leaves by an overflow on the shell 16. In a modification, the plates 2 are slightly conical, concave upwards, and the shaft 6 is tilted slightly so that one generatrix of each plate 2 is horizontal, the pipes 5 delivering mercury to the plates 2 at this location. The strip 1 may be dispensed with, the conical shape ensuring the formation of a mercury pool. In this modification, the shaft 6 may comprise a .series of superimposed elements each carrying one plate 2, the elements being interconnected by V-shaped spigot and socket joints, which may constitute passages leading to the interior of the shaft 6. In both modifications, the anodes 9 may rotate about the shaft 6 or remain at rest.
Patent GB-409538-A (GB)
Title: Improvements relating to hydraulic lifting jacks
IPC: B60S9/10
Filed: 1933-05-24
Abstract: 409,538. Lifting-jacks. MAZZA, M., 169, Willesden Lane, London. May 24, 1933, No. 20640. Divided on 413,107. [Class 78 (iii).] A hydraulic lifting unit for attachment to a motor vehicle or other object to be lifted comprises a horizontally disposed cylinder and piston with mechanical means operated by movement of the piston for transmitting downward pressure to a pot or ground-plate. The means shown comprises a lazytongs linkage 8 the elements 7<1> and 9<1> of which are pivoted respectively to a lug 7 on the cylinder and to a collar 6 slidable on the cylinder and connected by rods 5 to a head 11 on the piston-rod. The cylinder is provided with an attachment lug or plate 1 and the ground-plate 10 is pivoted to the linkage directly under the lugs 7 and 1. The apparatus, when collapsed, may be enclosed to exclude dust &c. When attached to a vehicle frame, fluid may be supplied from a central pump with distributing valves &c. and hooks may be provided (in known manner) to engage the axles to prevent sagging of the vehicle springs when the frame is lifted.
Patent GB-1486966-A (GB)
Title: Process for preparing calcium sulphate alpha-hemihydrate
IPC: C01F11/46
Filed: 1975-05-15
Abstract: 1486966 Calcium sulphate alpha-hemihydrate MITSUBISHI JUKOGYO KK 15 May 1975 [15 May 1974] 20699/75 Heading ClA Calcium sulphate alpha-hemihydrate is produced from gypsum in a continuous process in which a CaSO 4 .2H 2 O slurry is heat treated with water under pressure in the presence of no more than 0À1% by weight of sodium citrate, based on the total weight of the gypsum, at a temperature of not lower than 140‹ C. wherein the average retention time of the slurry in the process is more than 0À5 hours but not more than 2 hours and preferably from 1 to 1À5 hours. Comparative examples of a batch process both with and without sodium citrate are given in addition to an example of the process described above.
Patent GB-336253-A (GB)
Title: Process of and apparatus for the continuous separation and after separation of nitroglycerine and residuary acid
Filed: 1929-07-05
Abstract: 336,253. Schmid, A., and Meissner, J. July 5, 1929. Nitroglycerine is separated from residuary acid by passing the crude liquid through a vessel 2 having an inclined longitudinal axis, in in such a way that the liquid particles move parallel to this axis, the residuary acid moving in a downward direction, and the nitroglycerine upwards. The liquid enters the vessel through a pipe 1, the separated nitroglycerine leaving by a pipe 6, and the separated acid by a pipe 7. The heights of the pipes 6, 7 are so arranged that the separation level 3 of the two liquids is visible through an inspectionwindow 10. In order to ensure, that the entering liquid may be warmer and therefore lighter than the separated acid, so as to displace the latter downwardly, cooling means such as cooling coils 5<a> are provided, if necessary. In order to increase the speed of separation, plates 4a inclined in the direction of flow of the liquid may be provided, but in this case a space 8, to which the plates do not extend, is preferably left in the upper part of the vessel 2 to serve as a preliminary separator. Modifications are described, in one of which the cooling coils 4a are replaced by a coil located in the space 8, the vessel being in this case lined with heat-insulating material. In another form, the plates 4a are absent, and a cooling-jacket is provided instead of coils.