baber/WOPTO huggingface dataset:
Patent GB-633397-A (GB)
Title: Improvements in automatic radio tuning systems
IPC: H03J7/30
Filed: 1947-08-19
Abstract: 633,397. Impedance networks. ANDREWS, E. F. Aug. 19, 1947, No. 23030. Convention date, April 10, 1941. [Class 40 (viii)] [Also in Group XL(c)] A filter network 76 ... 83, Fig. 1, for producing a restraining voltage for a radio tuning device (see Group XL (c)), comprises two coupled tank circuits tuned to the intermediate frequency and arranged so that at the intermediate frequency the electrostatic and electromagnetic couplings are equal and opposite to give zero coupling at resonance. The first circuit comprises elements 76, 78, 79, 80, 81, 83 and the second comprises elements 79, 81<1>, 82, 83. The coupling through condenser 79 is inversely proportional to the frequency while the coupling through inductance 81<1> is proportional to the frequency. These are made to cancel at the intermediate frequency and resistor 80 is selected to give correct phase opposition. This gives substantially zero voltage across condenser 82 at resonance. Fig. 5 shows the physical arrangement of the filter elements 76 ... 83. Windings 76, 76<1> and 81<1> are carried on an H-shaped insulating member 201 carried by a grounded metal plate 200, to the upper side of which is fixed an insulating plate 202 carrying adjustable condensers 81, 82. Condensers 79, 83 and resistance 80 are supported by their conductors, and the whole unit is enclosed in a screen 106. Fig. 6 shows a modified form of filter circuit for producing the restraining voltage. It comprises a first tank circuit constituted by winding 76, adjustable condenser 220, inductance 222, 223, condenser 224 and condenser 78. The second tank circuit is constituted by condenser 224, inductance 226 and adjustable condenser 228. Both circuits are tuned to the intermediate frequency and are coupled inductively by coils 222, 223, 226, and capacitatively by condenser 224. These couplings are equal and opposite at resonance, and phase adjustment is carried out by resistance 230 and a small condenser 232.
Patent GB-1087793-A (GB)
Title: Improvements relating to dynamo-electric machines
Inventor: FLOYD GERALD WILLIAM
IPC: H02K5/08
Filed: 1964-06-04
Abstract: 1,087,793. Dynamo - electric machines. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 2, 1965 [June 4, 1964], No. 23189/64. Heading H2A. Moulded insulation 2, e.g. a glass-filled polyester compound encapsulating at least the stator end windings 3 of a dynamo-electric machine is formed in the moulding process with registering surfaces (7), Fig. 2, by which both end shields 4 carrying bearings 5 of the machine rotor 6 are positively located with the bearing and stator axes coincident, and the end shields are secured in position by fixing means which include threaded members 10 provided as inserts moulded into the insulation. The members 10 are engaged by retaining washers 9 and nuts (11), and rotation of the end shields is prevented by complementary cut-outs and projections (12). Further inserts 13, 14 may be provided in the insulation by which respectively the stator 1 may be secured to a support structure and ancillary equipment, e.g. a brake mechanism, may be mounted on the stator.
Patent GB-230781-A (GB)
Title: An improved combined electric cigar-lighter and advertising or displaying apparatus
IPC: F23Q7/00
Filed: 1924-10-01
Abstract: 230,781. Scagnolari, A. March 17, 1924, [Convention date]. Illumination, changing advertisements by controlling; actuating.-An electric igniter 1 comprising a head 2 containing insulated resistances 3, protected by a perforated mica disc 4 and connected with flexible leads 6, is suspended, when not in use, by an eye 14 on a lever 10, pivoted at 11 in a box 9, containing one or more electric lamps 15, and having a transparent front, provided with advertisements or pictures so that, on removing the igniter, the lever 10 is moved by a spring 12 into contact with a part 13 to close the igniter and lamp circuits. In a modification, the lamp circuit is adapted to be closed by the lever 10 contacting with a stop 16 when the igniter is replaced after use.
Patent GB-152192-A (GB)
Title: An improved automatic lifting "dog" or grab for manipulating steel ingots and the like
IPC: C21D9/70
Filed: 1919-09-24
Abstract: 152,192. Wheatley, J., and Riddle, F. J. Sept. 24, 1919. Lifting-dogs.-A lifting-dog for manipulating ingots &c. has a pair of jaws e pivoted to slotted side frames c slidable on a bar a to which the upper arms of the jaws are connected by a pin k passing through the slotted frames. The jaws are disengaged from the load by lowering until the ingot raises the side frames sufficiently to engage a catch m which locks the jaws in the open position.
Patent GB-250105-A (GB)
Title: Improvements in preserving vessels
IPC: B65D51/16
Filed: 1925-09-23
Abstract: 250,105. Bachstrom, K. M. F. Sept. 23, 1925. V a c u u m closures ; closures completed by outstanding p a c k i n g rings.-A preserving jar &c. 1 is formed with a smooth cylindrical interior into which a lid 2 of lightly smaller diameter is adapted to be pressed until it reaches the contents of the jar, a tight joint being made with the wall of the jar by a packing washer 3 secured by a cord 4 in a circumferential groove in the lid. The arrangement is such that the washer is bent backwards to form a sleeve which is held against the wall of the jar by atmospheric pressure when the contents of the jar cool after cooking. A wire thrust between the washer and the jar facilitates the opening of the jar, after which the lid may be used again to seal the remaining contents. The underside of the lid is preferably convex.
Patent GB-1306046-A (GB)
IPC: B23B47/04
Filed: 1971-04-19
Abstract: 1306046 Drilling machines KARL HULLER GmbH 19 April 1971 [12 March 1970] 23760/71 Heading B3C In a machine tool such as a drilling machine, a sleeve 17 is slidable along a carrier 6 and a tool spindle 5 is rotatable in the sleeve and driveconnected by e.g. splines, to a drive shaft 26, a cover 30 being disposed within the sleeve around the drive connection and having on its outer periphery a seal 31 which seals the inner space of the cover from a cylinder space of a piston-and-cylinder provided for moving the sleeve along the carrier. In the embodiment shown the unit 1 includes a fixed carrier 6 providing a fluid-pressure feed cylinder with inlet/outlet ports 10, 11 on respective sides of piston 13. The latter is mounted between a shoulder on the member 17, so as to encompass a reduced portion 16 of the latter, and a supporting ring 18 mounted on portion 16 through seal 31. The latter slides on the outer surface of cover 30 surrounding sleeve 26 which extends from a drive shaft of an electric motor 3. The member 17 supports the spindle by bearings. Movement of the member 17 during its return stroke is damped due to the penetration of a reduced annular portion 20 of supporting ring 18 into the annular channel 12 communicating port 11 with the cylinder. In other embodiments (not shown) the feed cylinder is separate from, parallel to and adjacent the member 17; the splined drive shaft, instead of being directly connected to the motor output shaft is connected to the latter by gearing, whereby a number of such shafts, each with an associated spindle, are provided.
Patent GB-723387-A (GB)
Title: Improvements in or relating to the fixation of window runways to sheet metal parts of vehicle bodies
Inventor: VARGAS RAFAEL
IPC: B60J10/04
Filed: 1952-09-23
Abstract: 723,387. Spring clip fastenings. STANDARD PRODUCTS (FRANCE). Sept. 23, 1952, No. 23792/52. Class 44. A clamp for fixing a window runway 13 or 62 to a sheet metal part of a vehicle body comprises a sheet metal blank formed into a U- shaped member consisting of a yoke plate 5 or 51 and two wings 6, 7 or 51, 54 for embracing the outer contour of the runway, two prongs such as 9 or 61 extending from the two sides of the V-shaped member for penetrating the runway and adapted to be clenched thereto and at least one tongue capable of being urged elastically against a metal part to which the runway is to be fixed. As shown in Fig. 2 a single tongue 1 is cut from the yoke plate 5 and bent to form a resilient clip. In another construction Fig. 6 used for fixing the runway 62 in a channelshaped member 52, the wings are made resilient and are bent and cut so that each side has two outwardly bent tongues such as 57 which bear obliquely against the channel surface.
Patent GB-773280-A (GB)
Title: Photographic lens shutter with an additional opening device
Inventor: NOACK ROLF
IPC: G03B9/08
Filed: 1955-08-18
Abstract: 773,280. Photographic shutters. VEB ZEISS IKON DRESDEN. Aug. 18, 1955, No. 23842/55. Class 98(1) In a multiple-blade shutter, the blades, pivoted on a ring, movable to-and-fro for the purpose of additional opening of the shutter for focusing are opened for focusing by the operation of the shutter means and close again on or after the operation of the shutter release member. As shown, the shutter, which is in the set position, comprises a setting ring 2 having an arm 5 and spring urged counterclockwise by the spring 23, a blade-operating ring 8 urged counterclockwise by the spring 14 and having a pin 21 engaged by the nose 20 on the ring 2, and a blade-pivot ring 3 to which the blades 11 are pivoted, which has an arm 7 and which is urged counterclockwise by the spring 4. In setting, the ring 2 is turned clockwise by the arm 5 and is held by the latch 17, the ring 8 being turned by the nose 20 until the projection 15 thereon is held by the lug 16 of the latch 13. During the last part of the setting movement, the lug 6 on the lever 5 engages the arm 7 and rotates the ring 3 to open the shutter for focusing. Operation of the trigger 18 engages the latch 17 to free the ring 2, and the arm 7 follows the arm 5 until, arrested by the pin 22, in which position the shutter is again closed. The cam surface 19 on the ring 2 then releases the catch 13 to free the ring 8 for normal exposure movement. In a modification, the ring 3 may be held in set position by the lever 17 in such a manner that operation of the trigger 18 - releases the ring 3 first and then the ring 3 releases the setting ring 2 by means of a pawl.
Patent GB-297567-A (GB)
Title: Improved bricklayers' and masons' pointing tools
IPC: E04F21/165
Filed: 1927-09-10
Abstract: 297,567. Howells, D. Sept. 10, 1927. Wall-pointing tools. - A wallpointing tool consists of a flat blade with converging curved edges, one edge having a flat groove for flat pointing and the other a round groove for round pointing. The end of the tool has lateral projections for cutting and cleaning. Holes A, B, C are provided for lightness, and the shank D can be utilized for raking out the joints or fitted in a handle.
Patent GB-1509125-A (GB)
Title: Drum brake
IPC: F16D65/54
Filed: 1976-06-09
Abstract: 1509125 Adjusting drum brakes for wear SOC ANON DBA 9 June 1976 [23 June 1975] 23879/76 Heading F2E A two part extensible member normally follows the movement of one shoe and one part is rotated, to effect adjustment, by the free end of an adjusting lever which pivots on that shoe, but when the movement of the free end exceeds a given valve the extensible member and lever move together to prevent further adjustment. In the embodiment of Figs. 1 and 2, the extensible member 52 is mounted on an intermediate lever 48 pivoted at 50 to shoe 12 and connected via strut 40 to the other shoe 14. Spring 43 constrains the strut to follow the second shoe while spring 64 urges lever 48, and hence extensible member 52, towards shoe 12. The adjusting lever 44 is pivoted at 46 on lever 48 and on brake operation a lug 68 on the strut 40 (Fig. 2) pivots the lever so that its free end 66 coperates with teeth 60 on the nut of the extensible member to effect adjustment. After a predetermined movement, the lug also abuts lever 48 which therefore moves with lever 44, the absence of relative movement between the latter and the extensible member preventing further adjustment. In a modification of the above (Figs. 5-8, not shown) the free end of the adjusting lever is slotted to receive the ends of two friction springs wound around the nut of the extensible element. The angles of the slots are so chosen that during brake application the frictional grip of one spring exceeds the other end that spring rotates the nut. During brake release the frictional grip of the other spring predominates and prevents reverse rotation of the nut. Similar springs are used in the embodiment of Figs. 9 and 14 but in this case the extensible member 252 is mounted directly on the adjusting lever 244 with its nut 258 between two arms of the lever. A spring washer 288 is arranged to urge the member against shoe 212 and the lever against strut 240. The ends of the friction springs project through slots 282, 286 in the lever. During brake application the washer moves the extensible member relative to the lever and one spring rotates the nut. Rotation ceases if the nut contacts the opposite arm of the lever as shown in Fig. 14. On brake release, the other spring rotates the nut further in the same sense so that the total adjustment is spread over the applying and release strokes.
Patent GB-220487-A (GB)
Title: Improved apparatus and means used for making packing washers for jointings
IPC: B26D3/16
Filed: 1923-09-25
Abstract: 220,487. Clegg, W. H. Sept. 25, 1923. Reciprocating-punch machines.-An apparatus for cutting jointing washers comprises a base a carrying a standard b on which a carrier c is vertically reciprocated by a pivoted hand lever d. The base carries a multiple die-plate i which is held in adjusted position by a pin k on a spring- pressed lever j, and co-operates with punches g on a capstan head f secured to the carrier by a spring detent h and a thumb nut. A cutting- blade m, of the shape shown in Fig. 3, is attached to the carrier so that a flat portion y co-operates with the edge of a guide-piece o while a V gougeshaped part n cuts against a curved member X. Discs are cut by operating the blade while the material is moved about a centre q adjustably mounted on the base a. Specification 1396/13, [Class 31 (i), Cutting and severing machines &c.], is referred to.
Patent GB-951219-A (GB)
Title: Method of preventing colouring of homopolymers of vinyl chloride, vinylidene chloride, vinylidene cyanide, or a copolymer comprising the same
IPC: C08K3/32
Filed: 1961-07-03
Abstract: Polymers containing vinyl chloride, vinylidene chloride or vinylidene cyanide are prevented from yellowing by the incorporation of phosphorus pentoxide.  Polymers exemplified are vinylidene cyanide-vinyl acetate copolymers, polyvinyl chloride, vinyl chloride-acrylonitrile copolymers, vinylidene chloride-vinyl chloride-acrylonitrile copolymers and a mixture of poly-vinyl formal and a vinyl acetate-vinylidene cyanide copolymer.  The phosphorus pentoxide may be added to a solution or dispersion of the polymer which may then be spun into fibres or it may be incorporated in shaped articles.
Patent GB-653204-A (GB)
Title: Improvements in or relating to devices for cutting articles, such as fruits or vegetables into blocks, slices or the like
IPC: B26D3/18
Filed: 1948-09-10
Abstract: 653,204. Fruit and vegetable slicing machines. PLATERS & STAMPERS. Ltd., and HORNER, H. Sept. 10, 1948, No. 23898. [Class 5(i)] Vegetable or fruit slicing device has an aluminium base 1 with upturned side flanges 2 bent over to form grooves 4 and 5 (not shown), in which a pusher 6 is guided. At one end of the base is secured a blade structure 9 having a main blade 10 arranged transversely to the base and secondary blades 12 extending between the main blade and the base. The blades 12 are U- form strips of metal secured by lugs to the base and the main blade. At the other end of the base is a depending flange 13 adapted to engage the edge of a table to take up the thrust when the device is in use. This flange may be screwed to the table and the base may have feet 14 of rubber or other resilient non-slipping material. Alternatively the whole of the base may be covered with this material. The pusher 6 has a handle portion 16 and an operative face 17 having an inclined portion 18 spaced from a castellated portion 19. An article to be cut is inserted between the pusher and the blade structure. On thrusting the pusher towards the structure 9 the blades penetrate the article until the main blade enters the space between the two portions 18, 19 of the pusher and the secondary blades enter the spaces between the castellations. A modified pusher which may be of thermo-setting or thermoplastic material has a flat top with a finger groove.
Patent GB-533789-A (GB)
Title: Improvements in or relating to sheet material and apparatus for the production thereof
IPC: B29D7/01
Filed: 1939-08-19
Abstract: 533,789. Film manufacture ; casting metals. DALY, A. J., and LOWE, W. G. Aug. 19, 1939, No. 23969. [Class 2 (ii)] (Also in Group XXII] Films, sheets, and the like are obtained by casting a solution of film-forming substance on to the flat polished surface of a solid metal alloy which has a melting point of about 100‹C. The film-casting support may be made by pouring the molten alloy on to a flat polished surface of a glass plate forming the bottom of a mould, cooling the alloy in position on the plate and removing the plate without damaging that surface of the alloy which was in contact therewith. The molten alloy may be rapidly chilled by immersing therein a base-plate of iron or other relatively high melting metal, adapted to adhere to but not to alloy with the low melting alloy, and the alloy may be allowed to set with the base-plate in position before removing the glass plate. Another method of chilling the molten alloy is to place the glass plate over a metal table from which it is separated by a thin filin of water. The alloy may comprise lead, tin, bismuth, and cadmium. A solution of film-forming substance is cast on the smooth surface of the alloy and preferably the sheet material is stripped from the surface while it still contains a considerable amount of volatile solvent, residual solvent being removed from the stripped sheet while it is held under tension. Several thin layers of film-solution may be applied in succession, the bulk of volatile solvent being removed from each layer before applying the next layer. The film-forming substance may be a cellulose ester or ether or a synthetic resin such as a polyvinyl ester, ether, or ketone, polystyrene, or a polymerized ester of the acrylic acid series. Plasticizers may be present in the film-forming solution. When multi-layer sheets are made, the individual layers may be of the same or different composition. Instead of stripping the formed sheet from the surface of the solid alloy, the assembly may be heated to a temperature sufficient to melt the alloy without damaging the sheet.
Patent GB-976176-A (GB)
Title: Electricity meter
IPC: G01R11/36
Filed: 1963-06-17
Abstract: 976,176. Bearings. MAGNETFABRIK BONN G.m.b.H. June 17, 1963 [June 16, 1962], No. 23990/63. Heading F2A. [Also in Division G1] In an electricity meter (see Division G1) a rotatable member 11 comprises a cylindrical portion 17 of diamagnetic material such as bismuth or carbon which lies in the air-gap 15 between the chamfered edges of a cup 13 and a polepiece 14 of magnetic material, the field in the gap due to a permanent magnet 12 being non-homogeneous and freely suspending the rotatable member, which also comprises a conductive disc portion 18. In order to eliminate air friction, the rotatable member may be enclosed in an hermetically closed housing which is evacuated or filled with a low viscosity gas such as hydrogen.
Patent GB-650676-A (GB)
Title: Improvements in or relating to electrically heated containers for culinary, technical and other purposes
IPC: A47J27/00
Filed: 1946-08-13
Abstract: 650,676. Glass to metal seals. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST-GOBAIN, CHAUNY & CIREY. Aug. 13, 1946, Nos. 24036 and 24037. Convention dates, Aug. 13, 1945. Drawings to Specification. [Class 36] [Also in Group XI] Glass containers are sprayed with molten aluminium forming heating resistances. The Specification as open to inspection under Sect. 91 comprises also spraying the resistance strips with molten red copper and then tinsoldering supply conductors thereto. This subject-matter does not appear in the Specification as accepted.
Patent GB-1284848-A (GB)
Title: Pneumatic cylinders, inter alia brake cylinders for road vehicles
Inventor: GACHOT JEAN
IPC: F16D65/28
Filed: 1971-04-19
Abstract: 1284848 Slave cylinders; cylinders; pistons J GACHOT and F PERALES 19 April 1971 [16 March 1970] 24070/71 Headings F2F and F2T A pneumatically actuated road vehicle slave cylinder 1 comprises a piston 2 movable against the action of a return spring 10 by the action of compressed air introduced through an inlet 7 to move a hollow brake actuating rod 4 and a brake control rod 5 ; on the opposite side of the piston 2 to the inlet 7 the cylinder 1 is formed with an orifice 12 communicating with atmosphere and to prevent dust getting between the wall of the cylinder 1 and the piston 2 the piston 2 carries an annular gasket 11 formed with a lip 13 on the side opposite the inlet 7 which lip  13 terminates in a sharp edge or point in section which is applied against the inside wall of the cylinder 1. The lip 13 of the gasket 11, which is made of a synthetic rubber, acts to move the dust towards the orifice 12 when the cylinder 1 is actuated (see Fig. 2); the lip 13 is defined by means of a triangular sectioned groove 14. The piston 2, which is made of steel, is formed with a part-spherical recess to receive the end of the control rod 5 and a resilient ring 6 centres the control rod 5 in the hollow rod 4. A cover 3 is bolted to the cylinder 1 and a ring 8 welded to the cover 3 bears a lubricated felt 9 in contact with the hollow rod 4.
Patent GB-245528-A (GB)
Title: An improved construction of joint comprising members of different thermal expansions
IPC: F02F1/04
Filed: 1924-10-10
Abstract: 245,528. Fedden, A. H. R., and Bristol Aeroplane Co., Ltd. Oct. 10, 1924. Cylinders. - An aluminium cylinder head 12 is secured to a cylinder 10 by steel bolts 15, the nuts of which abut on packing sleeves having a coefficient of expansion less than that of steel in order to compensate for the differences in expansion of the steel and alminium. The cylinder 10, which is made of steel, is provided with a radial flange 11 upon which the end face 14 of the head rests, diametral differences of expansion being accommodated by relative movement of the abutting surfaces at 14. In a modification, the sleeve 17 is disposed within an enlargement of the bolt-hole in the head.
Patent GB-466867-A (GB)
Title: Improvements in and relating to generators for mercury vapour
IPC: F22B3/02
Filed: 1935-08-29
Abstract: 466,867. Mercury-vapour generators. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 29, 1935, No. 24165. Void. Convention date, Aug. 30, 1934. [Class 122 (iii)] The drums and heating- elements of a mercury boiler are made of an alloy which does not undergo a transformation of its molecular structure within the operating range of temperature of the boiler, and the surfaces which come into contact with mercury are mechanically treated to eliminate cracks formed in the surface and to pro-, vide a smooth surface. The alloy may consist of iron with less than À04 per cent by weight of carbon, or the alloy may comprise iron, carbon in excess of À04 per cent by weight and another element of the group comprising chromium, silicon, wolfram, molybdenum, vanadium, aluminium and titanium. The surfaces which come into contact with the mercury are made perfectly smooth by drilling, rolling, machining, grinding, stretching, &c. Cracks, seams, laps, and sharp angles are eliminated. The surfaces may be polished. In the boiler shown, the drum 11 is provided with porcupine tubes 14 comprising inner and outer tubes 18, 19, and the wall 10 is protected by heating-elements consisting of up-tubes 15 connected to downtubes 16 arranged on the exterior of the wall. The tubes 19, 16 are connected to baffle plates 17.