baber/WOPTO huggingface dataset:
Patent GB-333305-A (GB)
Title: Improvements in or relating to variable inductances
IPC: H01F21/12
Filed: 1929-05-14
Abstract: 333,305. Burndept Wireless (1928), Ltd., and Scroggie, M. G. May 14, 1929. Tuning-apparatus, construction and control of. -A variable inductance for radio wave-changing comprises a number of inductively-coupled pairs of series-connected coils and a switch for shortcircuiting the coils pair by pair, the shortcircuited coils being connected to earth when used in the aerial circuit or to the positive side of the high tension source when employed in the anode circuit of a thermionic valve. As shown, Fig. 1, the coils 1 - - 6 comprise three inductively coupled pairs, the corresponding coils of each pair 2, 4, 6 and 1, 3, 5 being connected in series and short-circuited pair by pair by a switch 17 which connects the short-circuited coils to the positive terminal of the high tension battery. The coil sections may be employed as auto-transformers or reaction coils, and further sets of coils can be short-circuited simultaneously with the main wave change control. The short-circuiting contact of the switch in, a drum form is ribbed to provide better contact for the fixed coil contacts.
Patent GB-199040-A (GB)
Title: Improvements in or relating to liquid-fuel burners
IPC: F23D11/10
Filed: 1923-06-08
Abstract: 199,040. Rousseau, L. F. June 10, 1922, [Convention date]. Spray burners; wickless burners.-A spray burner comprises an air cone 1 in which is arranged a vertical jet-tube 5 connected to a float chamber 3, a tube 7 surrounding the jet-tube 5 and formed with air inlets 10, a hollow cylinder 14 screwed in the tube 7 above the jet-tube 5 and forming a mixing-chamber, a steam nozzle 18 secured in the top of the tube 7, and a diffuser 19 through which the mixture of steam from the nozzle 18 and fuel and air drawn up through tubes 5, 7 is discharged. This mixture, together with air induced through the cone 1, enters a flame-tube 2 and, after being mixed with additional air induced through ports 23, is ignited by a lamp 29 secured in the flame-tube by a socket 30. The heat of the flame generates in a water jacket 24 surrounding the flame-tube the steam supplied to the nozzle 18. A valve 28 is fitted in the steam supply pipe 27. The jet-tube 5 has an apertured conical end 12 projecting into the cylinder 14, which is formed with a rectangular orifice 17 and is provided externally with flat faces to provide air passages 15 communicating with the annular space between the tubes 5. The jet-tube is adjustably secured in the tube 7 by a screw 6. A cover 20 at the top of the tube 7 is removable for cleaning purposes. Steam for starting the burner is generated by heating the water jacket by gas burners or by a spirit burner consisting of a casing 31, Fig. 4, provided with air inlet tubes 32.
Patent GB-545602-A (GB)
Title: Improvements in or relating to electric plug and socket couplings
Filed: 1940-10-10
Abstract: 545,602. two-part couplings. JACKSON, D., and PYE, Ltd. Oct. 10, 1940, No. 15130. [Class 38 (i)] A plug - and - socket coupling has the insulating support for the contact elements mounted in a casing made of stamped or pressed sheet metal. The plug member consists of an outer shell 11, Fig. 3, with a mounting flange 14 and an inner liner 10 with a flange 12 against which the insulating discs 3 ... 5 are held by a spring ring 16 secured by the ends 17 of a stirrup clip 18 or by tangs entering slots 20. The plug contacts 6 are of sheet metal and have cross bars 7 located between the discs 3, 5 in apertures in the disc 4. Supply leads are soldered in eyes 15. The socket member has a shell 24, Fig. 6, flanged at 25 to .retain discs 26, 27 held in place by a ring '31 and, if required, a backing plate 36. The sockets 28 are of sheet metal with splayed tips held between the discs 26, 27. Supply leads are soldered in eyes 29. The part 24a of the shell 24 has a flange 44 forming a swivel joint with a channel 45, being fixed with the cable inlet 38 at the desired angle by bending the flange 44 where it is exposed by gaps 45a in the channel 45. A removable cover 37 forms half of the cable inlet and is retained by a band clip 41 and by a tang 40 entering a slot in the part 24a. A collar 42 grips the cable sheath. The clip 18 secures the plug and socket members together and is adjust-- able to correspond with the angular position of the part 24a. The contact assembly may be sealed with varnish, or a rubber disc compressed between rigid outer discs may be employed.
Patent GB-1214953-A (GB)
Title: Closure for use with a barrel or other liquid container
Inventor: DOWNIE GEORGE
IPC: B67D1/08
Filed: 1969-03-24
Abstract: 1,214,953. Pipe couplings. GASKELL & CHAMBERS Ltd. 13 March, 1970 [24 March, 1969], No. 15269/69. Heading F2G. A closure for a barrel has a valve adapted when in the open position to allow gas to enter the barrel through one passage and thereby force fluid out through a second passage. The closure comprises a cup-shaped member 10, with a tube 13, closed at its upper end 14, passing through it. A valve member 15 slides in the member 10 and seals against it and the tube 13 by means of "O"-rings 17 and 18. The valve may be retained in the open position against the action of spring 25 by coaxial pipes 26, 27. Gas enters the barrel via passage 28, orifice 24, and axial groove 23. Fluid is forced from the barrel via tube 13, orifice 5, and pipe 26. In a modification gas enters the barrel via passage 28, an axial groove in the interior surface of the member 10, and an orifice in the lower portion of the member 10.
Patent GB-968487-A (GB)
Title: A magnetically adherent flexible sign or like plate
IPC: B60R13/10
Filed: 1963-04-18
Abstract: 968,487. Laminates. F. FORTENBACHER, [trading as VERKEHRSLEHRMITTEL U MAGNETISCHE LEHRMITTEL FAHRSCHULBEDARF FRITZ FORTENBACHER]. April 18, 1963 [April 19, 1962; Jan. 25, 1963], No. 15391/63. Heading B5N. [Also in Divisions G5 and H1] A flexible, magnetically adherent signplate, comprises a layer of rubber or plastic incorporating powdered permanent magnet material bonded to a layer incorporating no such material, the plate bearing characters, preferably applied by screen printing. The plate may comprise two layers of rubber vulcanized together, or the layer containing permanent magnet material may have a coat of synthetic resin or rubber lacquer applied thereto. Fig. 2 shows rubber 1 incorporating permanent magnet material, a fabric interlayer 5, a layer of rubber 2 and a lacquer coating 3 bearing printing 4. The permanent magnet material may be barium ferrite. Layers 2, 3 may incorporate materials which absorb ultraviolet rays. The rubber layer 2 may contain powdered softiron (Fig. 3) acting as a return path for the alternate north and south poles on the surface of sheet 1. The iron powder may be incorporated in or adhered to a sheet of rubber 2 which is then secured to sheet 1 by vulcanizing or adhesive, or the iron powder may be mixed with rubber solution and sprayed or brushed on to sheet 1. An additional edge layer may incorporate ferromagnetic material, and a third layer over the whole plate may contain no magnetic materials. The plate may be a motor vehicle registration plate or name plate, or used on railways or ships.
Patent GB-787918-A (GB)
Title: Improvements connected with castor mountings
IPC: B60B33/00
Filed: 1955-05-31
Abstract: 787,918. Castor mountings. PRIORY CASTOR & ENGINEERING CO., Ltd., and COOPER, W. H. May 22, 1956 [May 31, 1955], No. 15512/55. Class 52(1) A castor mountting consists of a socketed bracket 4 incorporating a locating projection 4b attached to a leg member or frame 5 by screws 4d, and a horizontal section 4c provided with an upright tang 4e, which can be hammered into the leg or frame 5. The castor 3 fits into the socket 4a.
Patent GB-476233-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J29/43
Filed: 1936-06-04
Abstract: 476,233. Cathode-ray tubes. BAIRD TELEVISION, Ltd., and JOHNSTONE, D. M. June 4, 1936, No. 15580. [Class 39 (i)] In a television-receiving tube a modulated and deflected beam corresponding to incoming signals forms a charge image upon a mosaic structure 6 of insulated elements, which are capable of emitting electrons; these are accelerated and focused upon a luminescent screen 7 to reconstitute a visible image. The mosaic consists of electrical conductors embedded in insulating material, and may be constructed in the manner described in Specification 446,585. The side facing the screen 7 may be photo-electric and evenly illuminated from a light source or it may emit thermionically, being heated by a screen 8 which is also used as an equipotential grid for ensuring equal velocities of electrons flowing to the screen 7. An electron multiplying device as described in Specification 469,404 may be interposed between the mosaic 6 and screen 7. The modulated beam from the gun 2 may impinge directly on the mosaic screen 6 or it is deflected over a luminescent screen 3 carried by a plate 4 which has a backing 5 capable of photo-electric emission, which emission is taken up by the mosaic screen. The material on the screen 3 may have a long afterglow. An intermediate member such as the parts 4, 5, 6 described in Specification 471,539 may be placed between the gun and the screen 3, the intermediate member receiving the modulated beam.
Patent GB-635781-A (GB)
Title: Improvements in or relating to the production of crystalline magnesium hydroxide
IPC: C01F5/22
Filed: 1947-06-13
Abstract: Crystalline magnesium hydroxide is obtained from water containing magnesium salts, particularly sea water, by adding thereto powdered, burnt, unslaked lime or dolomitic lime, removing liquid containing precipitated magnesium hydroxide in suspension, and returning settled magnesium hydroxide as seed crystals to the reaction vessel until the weight of seed therein is between five and twenty times the weight of magnesium hydroxide precipitated per hour, and thereupon removing and separating excess precipitated magnesium hydroxide.  The lime or dolomitic lime should preferably be calcined at 900-1100 DEG  C. Bicarbonate should first be removed from the sea water.
Patent GB-454784-A (GB)
Title: Improvements in and connected with apparatus for cleaning poultry battery cages and the like
IPC: A01K31/04
Filed: 1936-06-05
Abstract: 454,784. Cleaning poultry cages &c. PROCTOR, A., and PROCTOR, J. A., 14, Tennyson Street, Harle Syke, near Burnley. June 5, 1936, No. 15778. Addition to 438,715. [Class 5 (ii)] In apparatus oi the kind claimed ir the parent Specification, the clean ing means project ing laterally of the wheeled frame 1 comprises a scraper 20, a brush 24, anc a sand box 27. The scraper is made o: rubber and is ad justably clampec between an angle piece 15 and a block. The brusl also is adjustable mounted and is connected by hooks to the box 27 which runs on wheels and is provided with a perforated bottom. The trays 21 beneath the perforated bottoms of the cages have upstanding walls 23 for catching the droppings of the birds while allowing the passage of the cleaning device through the open ends of the spaces beneath the cages.
Patent GB-810977-A (GB)
Title: Improvements in and relating to actuators
Inventor: WALMSLEY JOHN HENRY
IPC: H02K7/116
Filed: 1955-06-01
Abstract: 810,977. Actuators. WESTERN MANUFACTURING (READING) Ltd. June 1, 1956 [June 1,1955], No. 15783/55. Class 78 (3). An actuator comprises a motor unit M, a gear-box G and an actuating unit P which are interchangeable with other units of different capacities to produce an actuator having the required power-output characteristics. The unit M is provided with a boss 28 which mates with a recess 29 in box G and so accurately locates pinion 26 in the gear train. A similar recess is provided to seat boss 31 on the unit P so interengaging a dog 30 with a complementary driven member (not shown) in the box G. The electrical connections to the motor and limit switches are effected by pins 21, 23, engageable with sockets 22 on a detachable plug receiving unit E provided with a rotatable head portion 12 which enables the position of socket 16 to be adjusted. The unit P is shown as a screw-and-nut mechanism aligned with the axis of pinion 26, but according to various modifications (not shown) it can lie alongside the gear-box G either parallel with or at an acute or right angle to said box. In a further modification (also not shown) the screw- and-nut mechanism is replaced by an angularly movable, radically extending arm.
Patent GB-161471-A (GB)
Title: Improvements in an oil burner having a circular wick
IPC: F23D3/00
Filed: 1920-06-11
Abstract: 161,471. Sherwood, S. H. June 11, 1920. Wick burners, solidflame.-In a circularwick burner of the kind in which a perforated shallow cup e is fixed to the top of the wick stud d, holes a<3> are formed in the crown x of the hollow burner body to allow the passage of air through the wick winder aperture f to the wick tube.
Patent GB-568521-A (GB)
Title: Improvements in and connected with book covers
IPC: B42D3/12
Filed: 1943-09-27
Abstract: 568,521. Loose covers for books. SEXTON, W. G. Sept. 27, 1943, No. 15852. [Class 16] A loose cover for books, which is convertible into a stand for supporting a book during reading, comprises two side panels 10, 11, Fig. 2, connected by a flexible or hinged back 12, one or both of the panels having at its free edge means such as a ledge 14 for'supporting a book. The free edges of the panels may have rubber corner-pieces or an edging of rubber to prevent slipping, and the ledge 14 may be replaced by a strip of rubber. The rear panel, which forms a strut, may have hinged supporting-flaps 21, Fig. 5.
Patent GB-666203-A (GB)
Title: Improvements in or relating to radio wave lenses
Inventor: RAMSAY JOHN FORREST
IPC: H01Q15/06
Filed: 1947-06-16
Abstract: 666,203. Aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 1, 1948 [June 16, 1947], No. 15860/47. Class 40 (vii). A lens structure for refracting radio waves, having two perpendicular components of polar. ization, comprises two component orthogonallycrossed lenses, each of which comprises a plurality of spaced metal plates forming waveguide channels. In one embodiment the lens system has a honeycomb structure, as shown in Fig. 2. The horizontal and vertical spacings of the plates may be the same or they may differ depending upon the desired foci for the horizontally and vertically polarized transmissions and whether or not these transmissions are of the same frequency. As shown, the component lenses 'have the same length in the direction of transmission at each point in the structure; these lengths however may differ. Again, although normally uniform spacing is used for each set of plates, the spacing of either or both sets may be varied across the lens. A lens structure in accordance with the invention may be used in conjunction with a radio mirror, the lens being terminated on one side by the mirror and the emergent radiation leaving the lens by the side on to which the incident radiation was projected. Fig. 3 shows a lens structure for use with a conical radiator which is excited to radiate both vertically and horizontally polarized waves. The lens comprises a plurality of vertical strips 2 (of which only three are shown) and horizontal annular strips 1 arranged as shown in the Figure. Production of circularly-polarized radiation. A lens structure in accordance with the invention may be used in conjunction with a further device for introducing a phase difference of 90 degrees between the emergent horizontally and vertically polarized waves. The radiation incident upon the lens has a spherical wavefront which is converted to a planar wavefront by the lens. A structure which is attached to one of the component lenses introduces a 90 degree phase-difference between the emergent waves, thus giving rise to circular polarization. The radiation may comprise two separate beams derived from a common transmitter or a single beam having a plane of polarization inclined at 45 degrees to the wave-guide sections of the lens.
Patent GB-975697-A (GB)
Title: Fabricated tubing and the method and apparatus for producing the same
IPC: F16L9/16
Filed: 1963-04-22
Abstract: 975,697. Making tubes. CALUMET & HECLA Inc. April 22, 1963 [June 11, 1962], No. 15866/63. Heading F2P. Tubing is made by forming edge portions of strip into narrow flanges extending generally perpendicular to the strip and in the same direction, tapering the flanges outwardly to bias the strip toward a helical configuration, coiling the strip into a tight helix with the outer surfaces of the flanges in abutment and bonding those surfaces together. The flanges are turned up between pairs of rollers 24, 28 and 22, 27 and then tapered between an anvil 38 and rollers 35, 36 on opposite sides of the mandrel. The rollers are driven to assist the feeding of the strip to a mandrel 12, the rotation of which also draws the strip on to it. The position of the rollers 35, 36 in alignment with the axis of the mandrel and not with the width of the strip, normal to its edges, tends to form the strip into a helix. The roller 35 also engages the inner face of the first convolution of the flange 32 to press the outside faces of adjacent flanges together, Fig. 4. In a modification, the rollers are positioned where they only taper the flanges against the anvil, i.e. as shown dotted at 35a, 36a. The contiguous flanges are welded together between elements 40, 42, which, for metal strip, e.g. aluminium or an alloy thereof, are electrodes and for plastic strip are electrically heated jaws. The flanges may subsequently be flattened by a roller 50.
Patent GB-360811-A (GB)
Title: Improvements in lawn mowers
IPC: A01D34/42
Filed: 1931-06-01
Abstract: 360,811. Lawn-mowers. WEDMORE, E. B., 36, Kingsway, London. June 1, 1931, No. 15946. [Class 6 (ii).] In a lawn-mower having a pivoted handle and front driving-wheels with a rotary cutter located between their planes, the handle pivot is placed in such a position that the force applied to it when the machine is operated is directed to a point behind or in the neighbourhood of the line of contact K of the driving-wheels A with the ground. The pivot may be located anywhere in the line LM passing through the crosehandle and the contact-line K, but preferably at a point O below the axis of the rotary cutter C and near the ground. The lower forked end of the handle P is curved to pass over the cutter C or its bearings. The arrangement may be such that the centre of gravity of the machine is behind the pivot so that when the handle is in the vertical position, resting against the cross stay R, the machine may be lifted by the handle without turning about the pivot. The handle is stable in the vertical position and stands in a convenient position for storage. It may be bent to clear hooks on the grass-box. Specifications 238,130, 288,934, and 298,007, [all in Class 6 (ii), Gardening &c. appliances], are referred to.
Patent GB-272925-A (GB)
Title: Improvements relating to the toning and fixing of photographic prints
IPC: G03C5/46
Filed: 1927-06-15
Abstract: 272,925. Devienne, E. June 21, 1926, [Convention date]. Toning and fixing. - For toning and fixing silver prints on print-out paper, a single bath containing salts of iron, copper or chromium and an alkaline thiosulphate (hypo) is prepared in a stable condition before use, so that the addition of acid during its operation is unnecessary. Solutions containing ferric or chromic salts and an alkaline thiosulphate are stable in themselves, but better results are obtained by adding an alkaline sulphocyanide thereto during preparation. An alkaline thiosulphate bath containing ferrous salts, or iron salts such as potassium ferrocyanide or ferricyanide, or copper salts such as copper sulphate, is unstable, but is rendered stable during preparation by adding dilute sulphuric acid and alkaline sulphocyanide. Salts having chromium as the base metal may be used in the same manner as iron salts. Bichromates cannot be used, but the neutral chromates may be used in the same manner as the ferrocyanides or ferricyanides. The iron and chromium baths yield tones ranging from brown to purple, and the copper baths yield sepia tones. Toning proceeds in the same manner as with the usual gold toning bath.
Patent GB-716875-A (GB)
Title: Improvements in apparatus for the electrophoretic or electrolytic separation of mixtures
Filed: 1951-07-05
Abstract: 716,875. Electric separation of mixtures in a liquid. GRASSMANN, W. July 5, 1951, [July 10, 1950.] No. 15997/51. Addition to 679,278. Class 41. In a modification of the apparatus for electrolytic or electrophoretic separation of mixtures of substances as claimed in the parent Specification, the separating chamber 2 is divided from each of the electrodes 3, 4 by a diaphragm 9 defining an electrode chamber and each electrode chamber is sub-divided into two compartments by a further diaphragm II, the compartments nearer to the separating chamber 2 containing porous material 14. Buffer or electrolytic solution is supplied to the electrode chambers through inlets 12 connected to constant head devices 16 and discharged through outlet 13 connected to constant level draining appliances 19. By regulating the heights of the devices 16, 19, it is possible to produce the same difference of hydrostatic pressures between the upper and lower ends of the porous layer 14 as between the upper and lower ends of the porous material in the separating chamber 2, and also it is possible to provide a constant pressure difference which may be zero over the whole length of the diaphragms between the electrode chambers and the separating chamber 2. In this way electro-osmotic flow from one electrode to another may be balanced. The grain size of the porous material 14 is related to the grain size of the material in the separating chamber 2 so that a laminar flow of the liquid in the electrode chambers takes place at a velocity is a multiple of the velocity of the liquid in the separating chamber 2. The diaphragms. 9 may consist of material of high porosity for example filter paper, linen and large glass particles, and the diaphragms 11 may consist of material of low porosity for example burnt earth.
Patent GB-1040634-A (GB)
Title: Cam mechanism
Inventor: LYMAN HAROLD THORNTON
IPC: H01F21/06
Filed: 1964-04-17
Abstract: 1,040,634. Screw and nut gearing; cams. INTERSTATE MANUFACTURING CORPORATION. April 17, 1964, No. 16016/64. Headings F2K and F2Q. [Also in Divisions H1 and H3] The movement of a radio-frequency tuner core plug 34 fast with a nut 19 of a pair of nuts 18, 19 driven rectilinearly by a rotating leadscrew is modified by the nuts 18, 19 being angularly moved additionally by surrounding adjustable cam tracks 31, 32, Fig. 4 (not shown), engaged by radial followers 18c, 19c on the nuts. The spherically headed followers 18c, 19c resiliently engage the tracks 31, 32 formed by radial ledges 21, 22 on the inner periphery of adjacent rotatable cam washers 20 formed in a pile 23, so that any predetermined frequency to lead-screw rotation characteristic may be obtained. The cam washers 20 are locked in position by adjacent non-rotatable plates 24 and 25 clamped together by axial bolts 26. The plates 25 have side slots to reach the adjusting notches 29 in the cam washer edges. The nuts 18 and 19 are oppositely biased axially and angularly by a spring 30 to eliminate backlash and resiliently engage the cam followers with the cam tracks. The movable coaxial inner and outer cylindrical inductive coils 34, 35 of the tuner are of powdered iron in a plastic binding and telescope over a stationary coil 40. Coaxial capacitative copper Faraday Shields 44, 45 and 46 are provided on the coil 40, core 35 and part of the stationary coil block 43. The lead screw knob shaft is sealed in an outer case 11 by a bearing housing stuffing box.