baber/WOPTO huggingface dataset:
Patent GB-336065-A (GB)
Title: Improvements in the production of phosphorus oxychloride
IPC: C01B25/10
Filed: 1929-09-06
Abstract: 336,065. Dunn, J. S., Briers, F., and Imperial Chemical Industries, Ltd. Sept. 6, 1929. Phosphorus oxychloride is made by the action of phosgene or its equivalents on calcium phosphates such as rock phosphate, or double superphosphate, under such conditions that fresh surfaces are constantly exposed to the reaction gases and the calcium chloride, formed from the carbonate present in the raw material, is prevented from forming a protective covering. The phosphate may be ground or stirred during the process, and inert solids such as coke or the washed residues from a previous operation may beadded, or agitation produced by using a rotary kiln and admixing pebbles or similar material. The mass may be washed with water at intervals and re-used after drying. The drying is essential. If the phosphate is mixed with carbon, activated by treatment with chlorine at a temperature of about 1000‹ C., the phosgene may be replaced by chlorine or a mixture thereof with carbon monoxide. The temperature during the reaction is raised from about 350 to 600‹ C., or higher if chlorine alone is used. Specification 337,123 is referred to.
Patent GB-503527-A (GB)
Title: Improvements in and relating to the construction and utilisation of metallic tubularmembers for use in settlement tanks
IPC: B01D21/18
Filed: 1937-10-07
Abstract: 503,527. Gravity-separation apparatus. HARTLEY, J. W. Oct. 7, 1937, No. 27177. [Class 46] Scraping-apparatus for sedimentation tanks wherein submerged girders for carrying the scraper elements are of oval or similar tubular members with the major axis of each tube substantially vertical, is characterized in that the members are constructed from two halftubes joined together. In the construction shown in the Figure, two members 10, 11 are welded together at 12 to form an oval tube which may be stiffened by stays 19. Projections 14 are provided for use in supporting the scrapers. T-Shaped or straight strips may be interposed between the ends of the members 10, 11. The members may alternatively be shaped to form a tube of diamond shape in cross-section. In a modification one of the members extends beyond the other to form a support for the scrapers.
Patent GB-245246-A (GB)
Title: Improvements relating to dough and similar mixing machines
IPC: A21C1/14
Filed: 1924-11-14
Abstract: 245,246. Rothwell, E. Nov. 14, 1924. Interconnecting guard with starting-gear.-Relates to dough-mixing machines of the tilting-container type, and consists in the provision, in an enclosing-housing, of an interlocking-connection between the cover and belt-stripper, and of means for allowing the knives to be driven when the drum is tilted, preferably in conjunction with means to prevent actuation of the tilting-mechanism while the knives are running. The opening in the tiltable drum a is normally protected by a counterweighted lid b hinged to a stationary support and provided with a notched pin b<2> and with projections (not shown) engaging the interior of the drum. A bar f, slidable in a fixed casing e, is linked to the beltshipping lever g<3> and is provided with a spring- biassed lever i and a rib f<1>, which coacts with the notch in the pin b<2> to lock the lid when the bar is moved to the right on starting the machine. A lug i<3> on the lever : i engages the base of a rotatable cone to prevent this movementof the bar f except when the pin b<2> is present to cam down the shorter arm of the lever i. When the bar is moved to the left, the lug i<3> rides over the cone j. A rod g<5>, carried by the lever g<3>, masks the squared shaft h of the tilting-worm to prevent application thereto of a key unless the belt is on the loose pulley. On inverting the drum a, a bracket k, Fig. 3, contacts with an arm j<3> on the shaft j<1> of the cone j when the movement is almost complete, so turning the cone to present a groove j<2> to the lug i<3> and permit re-starting of the blades. On turning back the drum after stopping the drive, the end m<1>of an adjustable cam plate m engages the arm j<3> to restore the cone.
Patent GB-1078682-A (GB)
Title: Improvements in the formation of images
IPC: G03C5/50
Filed: 1964-07-01
Abstract: Images are formed by (i) exposing by application of pressure a photographic film having contiguous unfogged outer and inner silver halide emulsion layers, the grains of the inner emulsion layer being of the internal image type, so as to form a latent image in the outer emulsion layer, (ii) developing the outer layer to a silver image and (iii) treating the exposed material with an aqueous solution containing an image-producing agent e.g. a fogging agent for the inner emulsion layer, which diffuses selectively through the exposed areas of the exposed and developed outer emulsion layer to the inner emulsion layer, the exposure and sensitivity of the inner emulsion layer being such that after the exposure and development of the outer layer less than 1/10 of the available silver halide in the inner layer in areas corresponding to the exposed areas in the outer layer is developed.  In the examples the image producing agent used in stage (iii) may be an aqueous solution containing (1) an anion which forms a silver salt less soluble in water than part at least of the silver halide in either of the emulsion layers e.g. KBr, K1 or Na2S (2) an antifoggant e.g. 2-mercapto-thiazoline, the lower layer being developed with a fogging agent e.g. thiourea (3) a fogging agent e.g. thiourea and 2-and 4-hydroxybenzylidene rhodanine.  (4) anionic dyes which diffuse into and are mordanted by the inner emulsion layer. (5) 2-mercapto-4-phenylthiazole followed by treatment with a fixer. Any silver halide images formed may be toned.  Steps (ii) and (iii) may be combined and the outer emulsion layer may be removed after stage (iii).
Patent GB-927737-A (GB)
Title: Improvements in methods of joining a coupling flange to a rectangular wave-guide
IPC: H01P1/04
Filed: 1961-07-27
Abstract: 927,737. Making wave-guides; welding, by pressure; soldering; flanging. PHILIPS 'ELECTRICAL INDUSTRIES Ltd. July 17 1961 [July 30, 1960], No. 27254/61. Classes 83 (2) and 83 (4). A copper-containing coupling flange 1 is connected to a rectangular copper-containing waveguide 7 having one transverse dimension 8 several times larger than the other transverse dimension 9 by providing the flange 1 with a collar extending in the axial direction of the waveguide 7, removing the corners of the collar to form two narrow tongues 2, 4 and two wide tongues 3, 5, coating at least the narrow tongues 2, 4 with tin solder spotwelding the narrow tongues to the waveguide 7 and tin-soldering all the tongues and the body of the flange 1 to the waveguide 7. The collar may be seamed to the flange 1 by screws or by hand soldering. Alternatively, the collar and the flange 1 are made in one piece from brass by hot-pressing. The spot-welding is effected by using an external pointed electrode and an internal electrode in the form of a flat molybdenum plate.
Patent GB-651945-A (GB)
Title: Improvements in or relating to circuit-arrangements for producing high-frequency oscillations
IPC: H03B5/10
Filed: 1948-10-21
Abstract: 651,945. Valve generating circuits ; frequency modulation. PHILIPS ELECTRICAL, Ltd. Oct. 21, 1948, No. 27356. Convention date, Oct. 24, 1947. [Classes 40 (v) and 40 (vi)] In an oscillator of frequency controlled by a voltage applied to the control grid of a back-coupled valve, the feedback circuit includes a voltage discriminative impedance having fixed static voltage conditions, of value dependent on the amplitude of the oscillations appearing at the anode of the valve, thus producing a variable phase shift and controlling the oscillator frequency. The tuned anode circuit 2 of an oscillator valve 1, back coupled to the grid through a coil 3, is connected to the valve across a diode 5 in parallel with a condenser 6. An increase in the control voltage applied to the grid increases the amplitude of the oscillations appearing at the anode, causing the diode 5 to conduct and change the phase-shift round the feedback loop, thus changing the oscillator frequency. The amplitude of the feedback to the grid is maintained constant by the diode 5. The diode 5 may be replaced by a rectifier cell, and the rectifier condenser circuit may be connected at any point in the feedback loop. The arrangement may be used for frequency modulation.
Patent GB-426640-A (GB)
Title: Improvements in or relating to composite wood plates or plywood
IPC: E04C2/12
Filed: 1933-10-06
Abstract: 426,640. Composite boards. LJUSNEWOXNA AKTIEBOLAG, Ljusne, Sweden. Oct. 6, 1933, No. 27556. Convention date, July 14. [Class 145 (ii)] [See also Group X] The core of a composite plate comprises laths 13, Fig. 3, connected by tongues and grooves ; the height of the tongues is greater than the depth of the grooves so that the laths are spaced. The laths may be divided into portions spaced in the direction of their length. In a modification, Fig. 4, the laths are grooved on both sides and connected by loose tongues 18 whose width is greater than twice the depth of the grooves, so that the laths are spaced. The loose strip 18 may be subdivided into portions the combined length of which is less than that of a lath. The core is faced on both sides with veneers. A plate may comprise, Fig. 5, two cores of tongued and grooved laths arranged with the tongues in opposite directions, a middle veneer 21 and facing veneers.
Patent GB-944489-A (GB)
Title: Improvements relating to belt conveyors
Inventor: BACH HUBERT ERNEST
IPC: B65G17/08
Filed: 1961-07-29
Abstract: 944,489. Endless belt conveyers. GEORGE LANE & SONS Ltd. July 25, 1962 [July 29, 1961], No. 27593/61. Heading B8A. In Figs. 1, 2, the belt of an endless conveyer comprises a number of apertured guide members 11a, each extending beyond the belt and having a pair of rollers 15 mounted on its extremity. The guide members pass through the gap between angle-section rails 13, 14, and the rollers engage flanges 13b, 14b of the rails. The remainder of the band is formed of rods 20 and helical links 21, the latter conveniently being welded to or brazed to a corresponding rod. The belt is supported on a table or rollers 10, the table and rails forming an arc for at least part of their length. In a modification, Fig. 3, the guide members 11a extend beyond both edges of the table and carry rollers which engage with two similar tracks.
Patent GB-914143-A (GB)
Title: Improvements in fluid flow control valves
IPC: F16K7/06
Filed: 1960-08-10
Abstract: 914,143. Valves. MASON, W. H. Aug. 3, 1961 [Aug. 10, 1960], No. 27653/60. Class 135. Actuation mechanism for a pinch cock comprises a rigid base plate 1 having a transverse rib or anvil 2, which is preferably of semi-circular or triangular cross-section. A plunger 7 is resiliently loaded by a spring or by a fluid pressure to close the valve by squeezing the flexible tubing 12 between the plunger and the anvil or rib 2. The plunger may be provided with a pin 9 co-operating with a helical cam surface 11 to operate the valve.
Patent GB-261175-A (GB)
Title: Improved marker for games
IPC: A63D5/04
Filed: 1925-11-04
Abstract: 261,175. Brocklehurst, R. V. Nov. 4, 1925. Scoring - apparatus. - A scoring-device for bowls comprises an dblong casing E provided with two slots e through which numerals, marked on two movable bands G mounted within the casing, are visible. Each band G is stretched between a spring-drum B<1> and a roller B, the latter being rotatable by means of a knob b<2>. The bands are adapted to be held in any desired position by spring pawls which normally engage ratchet wheels H on the rollers B, but are releasable by levers h projecting through slots in the casing.
Patent GB-261014-A (GB)
Title: Improvements in and relating to electric relays
IPC: H01H50/30
Filed: 1926-11-04
Abstract: 261,014. British Thomson-Houston Co., Ltd., (Assignees of Schilling, W. W.). Nov. 4, 1925, [Convention date]. Electromagnetic switches. - The inverted T-shaped armature 10, 11, Figs. 2 and 3, is polarized by an energizing winding 12, co-operating with which is a magnetic circuit having poles 13, 14, which may be poles of permanent magnets 15 or of definitely polarized electromagnets. The magnetic circuit is completed through members 16, plate 17 and bushing 17<1> and is protected from external fields by the plate 17, and bottom and side plates 18 - - 20. The armature is rotatable on bearings, one 26 of which is adjustable, whereas the other 27 is carried by a plate 28 which also carries a plate 29 on which is mounted a terminal 30. A torsion spring 31 is connected at one end to the plate 29 and at the other to a movable contact 32 on the armature, said contact 32 co-operating with two spring contacts to control two circuits according to the position of the armature. Assuming the poles 13, 14 are respectively south and north and the armature 11 is polarized by the winding 12 so as to be a north pole, then the armature will move over to the poles 13, stress the spring 31 and cause the contact 32 to engage the back spring contact. On reversal of current in the winding 12, the armature will move back, aided by the spring, so that the contact 32 will engage the front spring contact, but if the spring is initially sufficiently stressed this change will be brought about by a decrease, instead of reversal, of current. The coil 12 mav be used as a series or shunt coil to cause the relay to respond to increase, decrease, or reversal, of current or voltage. The relay is slightly modified when required for A.C. circuits, Fig. 5, there being pole-pieces 37 mounted on the side plate 19. These pole-pieces mav have projecting portions 38 for shading the flux into the armature so that there may be a definite minimum range between the pick-up and drop-out values of current. The part 10 of the armature comprises two parts of magnetic material which are rolled in the form of a cylinder and mounted on a centre. Then two parts are separated by a part of non-magnetic material to increase the reluctance, but one long section may be used instead of the two. The coil may be series- or shuntconnected, so as to cause the relay to respond to increase or decrease of current or voltage.
Patent GB-321287-A (GB)
Title: Improved soundproof and heat insulating plates and process of manufacturing the same
IPC: D21J1/00
Filed: 1928-09-28
Abstract: 321,287. Hoogenbemt, R. van. Sept. 28, 1928. Boards and compound paper.-Plates for insulating sound and heat, and auxiliary vibrations are formed of a pulp consisting of waste paper fibres mixed with longer waste flax fibres, preferably in equal amounts. The pulp is wound on a drum to the thickness desired, and is then slitted, removed, pressed, 'and dried. The plates may be made impermeable, for example by a coating of silicate of soda.
Patent GB-469577-A (GB)
Title: Method of manufacturing a product containing calcium nitrate and ammonium nitrate
IPC: C05C1/00
Filed: 1936-10-14
Abstract: A fertilizer containing calcium nitrate and ammonium nitrate is prepared by reacting calcium carbonate or substances containing predominant proportions of calcium carbonate with ammonium trinitrate in solid phase until a neutral or nearly neutral product is obtained. The calcium carbonate may be used in the form of powdered limestone or dolomite.  The reaction, especially towards the end, may be hastened by heating.  Calcium oxide and/or hydroxide may be added towards the end of the reaction to obtain a small amount of ammonia in the product.  Specification 405,504 is referred to.ALSO:A fertilizer is prepared by reacting calcium carbonate or substances containing predominant proportions of it, e.g. dolomite, with ammonium trinitrate in the solid phase.  Heating may be employed and calcium oxide and/or hydroxide may be added towards the end of the reaction.  Specification 405,504, [Group III], is referred to.
Patent GB-968567-A (GB)
Title: Improvements relating to tools for unwrapping wrapped electrical connections
Inventor: PERRIE DAVID
IPC: H01R43/033
Filed: 1962-07-20
Abstract: 968,567. Unwrapping wrapped electrical connections. FERRANTI Ltd. July 18, 1963 [July 20, 1962], No. 27920/62. Heading B3E. A tool for unwrapping wrapped electrical connections includes at least one tubular member 1 having one end adapted to fit loosely over a wrapped electrical connection 8, the tubular member 1 containing a slot 3 extending axially from one end for receiving the wire 11 extending from connection 8 such that when the tubular member 1 is fitted over a wrapped connection 8 rotation of the tubular member 1 in the appropriate direction will sever said wire and unwrap the connection. The slot 3 has sharp outer edges 3A, 3B to sever the wire. The internal surface of the tubular member 1 may be roughened or formed with a helical groove to ensure retaining of the unwrapped connection. The unwrapped connection is ejected by depressing a spring-loaded rod 4. The member 1 may be driven by hand or by a motor. Two wrapped connections may be unwrapped simultaneously by a tool having two tubular members.
Patent GB-363705-A (GB)
Title: Improvements in and relating to the construction of buildings
IPC: E04B2/02
Filed: 1930-09-18
Abstract: 363,705. Buildings ; tubular building elements ; chimneys. GERNAERT, J., 529, Avenue Louise, Brussels. Sept. 18, 1930, No. 27929. Convention date, Sept. 25, 1929. [Classes 20 (iv), 25, and 87 (i).] Tubular elements 1, A, B, Figs. 1, 2, and 9, of relatively long length, are superposed without mortar joints and laid so that, in adjacent walls, one set of tubes passes midway between the notched adjoining poles. The tubes may interlock by concave faces 2, or they may be plain tubes, Fig. 5, with interposed pieces 9, 10. Packing 3 may be used in the joints, such as sheet lead, or woven bands of raffia, aloe, esparto, or similar material, and fillings 4 may be added where required to form a pier. Contiguous ends may be joined by internal tubular connectors, Figs. 6, 7, and 8. The tubes may be silicious and transparent, or may be formed of pumice-concrete with a thin coating of fibrous cement, and may be reinforced with metal and with cores a, Fig. 9. The construction may be made rigid by vertical rods or tubes traversing the structure and clamped at the top and bottom. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the modification shown in Fig. 7 (Cancelled), and the application of tubular ring elements in the construction of chimneys, columns, and linings and tubbing for wells, mine shafts, and tunnels, as shown in Fig. 4 (Cancelled). In Fig. 7 (Cancelled), the axes of the tubular elements are co-planar in courses of adjacent walls. Fig. 4 (Cancelled) shows such circular structures formed of hollow rings interlocking by recessed and edged joints without mortar but with sheet packing as described above. The rings may be formed of fibrous sheet material, or of bands of fibrous material wound helicallv and covered with cement. This subject-matter does not appear in the Specification as accepted.
Patent GB-232169-A (GB)
IPC: F02B75/02
Filed: 1924-11-21
Abstract: 232,169. Maschinenfabrik Augsburg- Nurnberg Akt-Ges. April 8, 1924, [Convention date]. Drawings to Specification. Cylinders, construction of and passages for.- The scavenging air inlet ports in the walls of a liner are provided with external guide blades which are either cast integral with the cylinder jacket or constituted by separate plates which may be pivoted and adjustable by having pins which are engaged by a displaceable ring.
Patent GB-804267-A (GB)
Title: Improvements in wire weaving looms
IPC: D03D41/00
Filed: 1956-09-13
Abstract: 804,267. Reeds for looms. SCHUSTER, K. U. Sept. 13, 1956 [Sept. 13, 1955; Dec. 5, 1955], No. 28074/56. Class 142(2) To impart equal crimp to the warp and weft, a reed for a wire weaving loom has notched blades 1, the depth of the notches being sufficient to accommodate two meshes of the fabric, and the vertical width being slightly less than. (as shown), equal to, or slightly greater than the combined diameters of a warp wire and a weft wire. The outer edges 10, 11 of the notches and the lower corner 14 of the beat-up edge 4 are radiused or bevelled. The upper edges 8 of the notches may be formed by a continuous strip 6 (as shown) or by a rod having its centre line vertically above the centre line of the inner weft wire 9a. As shown in Fig. 10, the upper edges of the notches are inclined to form the beat-up edge 4; the forward part of the lower edge 7 may then be constituted by a strip 15. The notches are near either the upper or lower baulk of the reed.
Patent GB-402918-A (GB)
Title: Improvements in and relating to the treatment of the surfaces of bricks, building-blocks and the like
IPC: B28B11/06
Filed: 1932-10-10
Abstract: 402,918. Endless - belt conveyers. JOHNSON, J. A., San Remo, Beverley Road, and NORBITON POTTERIES & BRICKWORKS, Ltd., Blagdon Road, both in New Malden, Surrey. Oct. 10, 1932. Nos. 28159 and 35294. [Class 78 (i).] A conveyer 27 for carrying bricks through a sanding- apparatus is provided with discs 47 carrying turn tables 48 to enable the brick to be rotated to present different faces to the sand-distributing nozzles.
Patent GB-394853-A (GB)
Title: Apparatus for indicating the presence of smoke or dust in air
IPC: G01N21/53
Filed: 1932-10-10
Abstract: 394,853. Actuating apparatus by light radiations. STEPHENS, A. J., 285, High Holborn, London.-(Walther et Cie Akt.- Ges.; Dellbruck, Cologne, Germany.) Oct. 10, 1932, No. 28232. [Class 40 (v).] In an installation for detecting smoke or dust, of the kind in which a current of air is caused to pass between a photo-electric cell and a source of light, use is made of a cell of the semiconductor type, that is, a cell which generates an E.M.F. when exposed to light. As shown, the cell e is arranged at one end of a tube a through which the current of air passes, and is permanently illuminated by a lamp d. The current generated by the cell deflects the pointer h of a galvanometer g. When smoke is present in the tube, the cell current falls and the pointer h closes a signal circuit (not shown). The normal deflection of the pointer indicates the condition of the installation, which can further be tested by means of an opaque body k movable into position in front of the lamp d. Means may be provided for interposing the body k automatically at intervals. In a modification, two cells e are arranged as two arms of a Wheatstone bridge, one of the cells being so placed that it is not influenced by the presence of smoke. 'The galvanometer is arranged across the bridge, and a small current normally flows in it. In other modifications, lenses or mirrors are associated with the light source. In one such arrangement, the mirrors cause the light beam to follow an extended path before impinging on the photo-cell. The galvanometer may be arranged to signal the extinction of the lamp or damage of the apparatus. The galvanometer g may be replaced by a recording instrument.