baber/WOPTO huggingface dataset:
Patent GB-1045807-A (GB)
Title: Loudspeaker
IPC: H04R9/04
Filed: 1964-06-16
Abstract: 1,045,807. Loud-speakers. W. F. EWALD. June 16, 1964, No. 24870/64. Heading H4J. A loud-speaker speech coil 4 (Fig. 1a comprises a flat plate 4<SP>1</SP> of insulating material and a metal foil on the plate etched in the form of a flat spiral 16. Preferably congruent spirals 16 on opposite sides of the plate 4<SP>1</SP> are interconnected at 13 with outer ends at 14, 15, and are wound so that current flows in the same direction in the corresponding limb of each spiral. Tabs 17 are fastened to a diaphragm at the top and to a guide spring at the bottom. A plurality of such speech coils 4 may be secured side-by-side with interposed insulation. Pole plates may be disposed on either side of the plate 4<SP>1</SP> opposite the upper and lower limbs of the speech coil 4 to form two gaps across which magnetic fields are directed in opposite directions by two oppositely directed magnets (Fig. 2a, not shown). The speech coil is connected to the junction of two rectangular diaphragms with stiffening ribs perpendicular to the junction. Alternatively the diaphragm may be conical (not shown) in which case its apex will be provided with a closed keel the length of the speech coil 4. In another arrangement, permanent magnets 5<SP>1</SP>, 61 (Fig. 3a) are provided, together with rear stirrup-shaped polepieces 7<SP>1</SP>, 8<SP>1</SP> and flat front polepieces 9<SP>1</SP>, 10<SP>1</SP>. The speech coil 4 may be centred through a slot 2 and is secured to end guide springs 11, 12 (Fig. 3b, not shown). In a further arrangement, a single permanent magnet 5<SP>2</SP> (Fig. 4a) magnetized perpendicular to the direction of the plane of the speech coil 4 has a stirrup-shaped polepiece 7<SP>2</SP> extending round the magnet 5<SP>2</SP> and a polepiece 9<SP>2</SP> to define with the latter an air gap in which the speech coil 4 lies. The magnet 5<SP>2</SP> also has a stirrupshaped polepiece 8<SP>2</SP> and a channel-shaped polepiece 10<SP>2</SP> defining a second air gap. In a modification (Fig. 4c, not shown) the two lower polepieces 8<SP>3</SP>, 10<SP>3</SP> are each of U-shape and are interdigitated.
Patent GB-692214-A (GB)
Title: Toilet mirrors
Inventor: HARRIS RONALD
IPC: A45D42/10
Filed: 1950-10-12
Abstract: 692,214. Toilet mirrors. WILMOTBREEDEN, Ltd. Sept. 19, 1951 [Oct. 12, 1950]. No. 24913/50. Classes 52(iii) and 52(iv) [Also in Group XVII] A toilet mirror comprises a hollow body part having a hinged cover, a spring- loaded mirror pivotally mounted in the body part, an electric lamp holder contained in the body part, and a switch controlled by the cover. As shown, one edge of a rectangular frame c, carrying a mirror d, is pivotally attached to a body part a, of moulded plastic material or of pressed metal, and is loaded by a spring e to swing the mirror into a convenient position when a pivoted cover n is opened. A tubular electric lamp g is mounted in a recess f by resilient metal strips forming switch contacts and having bent ends forming sockets for the reception of plugs connected to any convenient source of current, e.g. the electrical system of a motor vehicle. A translucent, removable cover m closes the recess f and a projection p, on the cover n, passes through an aperture q between the switch contacts to interrupt the lamp circuit when the. cover is closed. In a modification, for carrying in a hand-bag, dry batteries supply the current and space for a lip-stick holder, accessible when the cover is open, is provided.
Patent GB-689174-A (GB)
Title: Improvements in and relating to microscopes
IPC: G02B21/26
Filed: 1949-09-29
Abstract: 689,174. Microscopes. SARTORY, P. K., and SARTORY INSTRUMENTS, Ltd. Sept. 28, 1950 [Sept. 29, 1949], No. 24987/49. Class 97 (i). A mechanical stage for a microscope comprises means for giving a part of the stage a linear motion, and means on the said part against which the peripheral arcuate surface of a circular support for a specimen, for example a circular dish, may bear in such a manner as to be readily rotatable about its own axis and can be traversed across the field of view by a combination of the said rotation and the said linear motion. As shown, the stage comprises a member 1 having a circular aperture partly shown at 3 and slidably carrying a plate 2 moved by a rack-and-pinion (not shown) by operation of a knob 5. The plate 2 has an aperture 4 and has upstanding therefrom rollers 6 having rubber rings 7 against which the circular object support 11, for example a dish, may be pressed by a spring (not shown). Manual rotation of the dish combined with the linear motion of the plate 2 permits the object to be scanned, and the dish and plate may bear markings to assist in the location of a particular portion of the object. The plate has tapped holes, for example those shown at 8, to which the rollers 6 may be attached to accommodate supports of different size. Alternatively the plate 2 may have a circular recess which is machined or provided with suitably positioned rounded projections to assist rotation of the dish. Alternatively the plate 2 may be provided with arc-shaped projections engaging the edge of the dish. The object may, if desired, be attached to a circular plate for use with the stage.
Patent GB-980009-A (GB)
Title: Spinnerette
IPC: D01D5/30
Filed: 1963-06-24
Abstract: 980,009. Spinnerets. MONSANTO CO. June 24, 1963 [June 25, 1962], No. 24989/63. Heading B5B. A spinneret suitable for making conjugate filaments comprises sheets or laminations 11 provided with spaced parallel slots 20 and 21 extending at an angle from the edge of the sheet and terminating in holes 24, 25, sheets or laminations 12 provided with spaced parallel slots 40 extending at a different angle from the edge of the sheet and terminating in holes 28, 35, and plates 13 having a plurality of bores 29, 39. A sheet machined as at 11 may be inverted and utilized as a sheet 12 and the end plates 13 may be further bored to form manifolds 30, 38 for the spinning solutions. A first spinning solution is withdrawn from a source 48 by a pump 49 and forced into the manifold 30 in the uppermost plate 13 and flows through the first fluid passageway formed by bores 29 and holes 24, 28 in the direction of arrows 31 to and through the slots 20 in the sheets 11 and the slots 41 in the sheets 12. The second spinning solution is withdrawn from a source 52 by a pump 53 and forced into the manifold 38 in the lowermost plate 13, and flows through the second fluid passageway formed by bores 39 and holes 35, 25 in the direction of arrows 39 to and through the slots 21 in the sheets 11 and the slots 40 in the sheets 12. Combination of the two spinning solutions at the orifices results in the production of conjugate filaments. Fig. 2 is a spinneret construction for forming conjugate filaments made up of three spinning solutions. Three sheets 60, 61 and 62 are provided with slots 66, 67 and 68 and clamped together so that the ends of the slots 66-68 meet and overlap each other at a common point on the face of the spinneret to form a spinning orifice. Slots 66-68 diverge from these intersections at the spinneret face to holes 71, 72, 73. Three spinning solutions are fed to the holes 71-73 from manifolds such as 30 and 38, flow through their respective slots and meet at the spinneret face to form a threecomponent conjugate filament. By utilizing four or more sheets in place of three above, conjugate filaments having four or more components may be made.
Patent GB-1246831-A (GB)
Title: A fail-safe electric switch
Inventor: PALMER MALCOLM GEORGE
IPC: F42C11/00
Filed: 1968-05-24
Abstract: 1,246,831. Magnetic switches. ALBRIGHT & WILSON Ltd. 19 May, 1969 [24 May, 1968], No. 24991/68. Heading H1N. A sealed magnetic reed contact unit has its contacts 13A, 14A maintained closed by a permanent magnet which can be moved, to permit the contacts to open, by a spring 18 when a block 17, preferably of potassium bromide, is dissolved by sea water entering the casing 9 by orifices 19, 20, 21.
Patent GB-1461927-A (GB)
Title: Method of manufacturing a low power transformer winding
IPC: H01F27/28
Filed: 1974-06-06
Abstract: 1461927 Transformers INSTYTUT TELE-I RADIOTECHICZNY 6 June 1974 [7 June 1973] 25063/74 Heading HIT A method of manufacturing transformer windings as shown in Figs. 1 and 2 comprises the steps of winding the primary and secondary coils, 2 and 3, separately from heat or solvent bonding enamelled wire. The coils may be subsequently assembled, one inside the other, while a layer of insulation 4 between the cores is setting and the ends of the coils connected to a termination tag 10 carrying printed circuit connecting pins 7. The assembly may be encapsulated in an insulating compound 8 such as synthetic resin by casting, fluidization or moulding methods. Alternatively the coils may be mounted on insulating bobbin 9, which is in two parts, with further insulating layers 5 and 6 of, for example, self-adhesive insulating tape or thermo-shrinking sleeving. The coils may be wound on a mandrel from wire coated with an enamel which may be bonded by hot air, direct current heating or the application of an alcohol solvent.
Patent GB-502417-A (GB)
Title: Improvements in and relating to wind-power electrical machines
IPC: F03D11/02
Filed: 1937-09-16
Abstract: 502,417. Wind motors. LEAN, C. (Honnef, H.) Sept. 16, 1937, No. 25204. [Class 110 (iii)] [Also in Group XXXV] In a wind driven electric generator having pole systems mounted directly on large wind wheels, the rotating part of the current collecting device for each wheel is carried independently of the wheel on the same axis but in a separate bearing and is resiliently connected to the wind wheel. The axle consists of a latticed steel tube 8 around which are mounted four annular double rails 9 on which rest carriages 14-17 carried by oppositely rotating wind wheels 4, 5. Wheels 19, 20 situated between the set of rails co-operate with rings 18 on the wind wheels to take end thrust. The commutators or slip rings 23, 24 are of disc form, are mounted on separate bearings 21, 22 and are mechanically connected to the wind wheels by resilient elements 28. Flexible leads are used for the electrical connections. The wheels may be braked by short-circuiting the windings. In order to avoid passage of short-circuit currents through the collecting devices, a switch for this purpose is mounted on the wheel and is actuated electromagnetically, so that the current collecting device has. only to carry the switch actuating current. The short-circuiting switch may be centrifugally operated to include resistance in the short-circuit when the speed is high and to reduce this resistance as the speed falls.
Patent GB-1394862-A (GB)
Title: Telephone instruments
IPC: H04M1/08
Filed: 1972-05-30
Abstract: 1394862 Telephone sets POST OFFICE 23 May 1973 [30 May 1972] 25228/72 Heading H4J A cradle switch actuator 2 is provided with a latching device 10 that can be manually operated, when the cover 1 of the set is removed, so as to simulate a handset-on-hook condition. The latch has an operating arm which fouls the cover so that the possibility of inadvertently replacing the cover without releasing the latch is removed. The latch is a one-piece moulding (Fig. 3, not shown) which clips on to the actuator. When its arm is raised to the position shown, the camming projection thereof bears against a support pillar 9 so forcing the actuator down on to cradle switch 5. The latch has an over-centre action.
Patent GB-659794-A (GB)
Title: Improvements in or relating to means for securing stabilised burning of fuel in fast-moving air or gas streams
IPC: F23R3/54
Filed: 1944-12-15
Abstract: 659,794. Jet propulsion engines. POWER JETS (RESEARCH & DEVELOPMENT) Ltd., COHEN, H., and DARTH, J. H. H. Dec. 15, 1944, No. 25261. [Class 110(iii)] [Also in Group XII] Means for reheating the exhaust gases of a gas turbine jet propulsion engine comprises a cylindrical pot 12, having an open end 13 facing downstream around which there is a fuel pipe 14 pierced with holes 15, attached to the truncated apex of the turbine exhaust fairing 8. Within the pot is an igniter 16. The presence and form of the pot 12 produces turbulence in the main gas stream and causes part of it together with entrained fuel to enter the pot where it is ignited. The resulting flame ignites the fuel sprayed radially outwards by the jets 15. The operation of the ignition may be effected by a single lever connected to the fuel control means and to the control of a variable area propelling nozzle as described in Specification 659,793. In the Provisional Specification an arrangement is described in which a series of fuel jets is arranged at a short distance upstream from the apex of the bullet in recesses within the profile of the bullet. These recesses have miniature trap doors to cover them when the fuel jets are not in use. In another arrangement the fuel jets are arranged upstream of the apex of the bullet in or near a part of the bullet which is of such material and design that it has a large heat capacity so that it will re-ignite the flame if it is extinguished. In both of these arrangements, means may be provided to drain the fuel supply piping where it is liable to get hot. and to blow cold air through the piping when the fuel is shut off.
Patent GB-1283876-A (GB)
Title: Detergents
IPC: F02B53/00
Filed: 1971-04-19
Abstract: 1283876 Detergent compositions ROHM GmbH 19 April 1971 [31 March 1970] 25262/71 Heading C5D A detergent composition comprises (a) 25- 50% of an adduct of a fatty alcohol and 20- 30 moles of ethylene oxide per mole of fatty alcohol (b) 25-70% of such an adduct having 8-19 moles of ethylene oxide per mole of fatty alcohol and (c) 5-25% of such an adduct having 3-7 moles of ethylene oxide per mole of fatty alcohol. Other ingredients specified include: sodium tripolyphosphate, sodium metasilicate, soda ash, and methyl cellulose or carboxymethyl cellulose.
Patent GB-752427-A (GB)
Title: Stepped grate for furnaces
IPC: F23H7/00
Filed: 1954-08-31
Abstract: 752,427. Stepped grates. MORING EN STEENAART N.V. Aug. 31, 1954 [Sept. 28, 1953], No. 25280/54. Class 51(1). In a stepped grate for a furnace each step comprises two stationary grate bars having a rotatable grate bar interposed between them, the rotatable bar of each step other than the top one being located vertically or substantially vertically below the stationary grate bar which is nearest the furnace in the next higher step. Each of the top two steps of the grate of the boiler plant shown comprises stationary bars 5, 6, flanking, one on each side, a rotatable bar 7. The lowest step only comprises bars 6, 7. Each bar 5 is water filled, inclined and of droplet shape the point of the upper bar being directed towards the lower one. Each bar 7 comprises a sleeve rotatable about a fixed water filled tube 8 the sleeve being provided with longitudinally disposed ribs or teeth. Each bar 6 is of strip-like form directed downwardly and outwardly from the furnace towards a clinker collecting conveyer belt 10 which carries clinker deposited thereon to an ash pit 11 and may be driven by the same power source as the bars 7. The bars 7 are periodically or continuously rotated dependent upon the combustion rate. The bar rotating means may be controlled by means responsive to the temperature or pressure of the boiler medium while at the sane time means may be employed rendering it possible to adapt the de-clinkering rate to the ash content of the fuel used. An undergrate blast fed to the furnace via the stepped grate cools the bars 6.
Patent GB-1338654-A (GB)
Title: Image transmitter using microfilm positives or negatives as source
IPC: H04N1/10
Filed: 1971-04-19
Abstract: 1338654 Facsimile apparatus COMFAX COMMUNICATIONS INDUSTRIES Inc 19 April 1971 [4 May 1970] 25415/71 Heading H4F In apparatus for transmitting signals used to produce facsimiles of microfilmed originals a scanning beam, e.g. from a C.R.T. 10, is reflected via two mirrors 12, 14 set a fixed distance apart on to the microfilm 18 and thence to a photomultiplier 22, incremental movements of a carriage 24 bearing the mirrors 12, 14 producing the necessary line-to-line movements of the scanning raster. Each line is scanned by a deflection of the scanning beam from the tube 10 in a direction perpendicular to the plane of the drawing. The carriage is driven by a stepping motor 30, which may be controlled by a circuit (Fig. 8, not shown) of the type described in Specification 1,338,653 in which the rates of transmission of image signals and scann ng are either fast or slow depending upon the information content of each part of the image being scanned. Microswitches 80, 82, 86 control the sending of a "start" signal to a receiver and the return of the carriage 24 to the start position on completion of scanning. Further microswitches 78, 84 provide safety means to close down the system in the event of faulty operation.
Patent GB-1465449-A (GB)
Title: Conveyor or handrail system for continuous entrainment at variable speed
IPC: B61B7/00
Filed: 1975-06-16
Abstract: 1465449 Variable speed conveyers and handrails P PATIN 16 June 1975 [14 June 1974] 25515/75 Heading B8A Articles 9 are conveyed at variable speed by being suspended from members 2 which run on a track 5 and are connected in pairs by flexible members 1 respective to each pair. The member 1 passes around deflecting pulleys 3, one on each member 2 of the pair. The ends of the member 1 are connected to members 4 running on a track 6. The speed variation occurs according to the distance apart of the tracks 5, 6. In a modification (Fig. 1, not shown), the track 5 carrying the load-carrying members 2, is disposed above, instead of below the track 6. In Fig. 3, the members 2 form a variable-speed handrail. The members 1 are formed of chains 14 each link of which carries a block 17 to prevent the chain from bending under load (but permitting bending in the reverse sense as the chain passes around the pulleys 3. Adjusters 23, 24 (Fig. 5) are provided, to take up wear in the blocks 17. An intermediate block 20 is mounted in the middle of each chain 14. At positions of minimum speed (maximum separation of the tracks 5, 6), the members 2 and blocks 20 come into abutment, and remove load from the chains and pulleys. At positions of maximum speed, abutments on the members 4 engage abutments on the associated members 2 (Fig. 4, not shown).
Patent GB-824955-A (GB)
Title: Stock feed control for extrusion apparatus
Inventor: DAVIS BENJAMIN HASKELL
IPC: B29C48/50
Filed: 1956-08-21
Abstract: 824,955. Extrusion machines. STANDARD MACHINERY CO. Aug. 21, 1956, No. 25556/56. Class 87(2). In an extrusion apparatus for rubber or similar plastic materials, comprising a supply passage 46 leading tangentially into the side of a longitudinal cylindrical bore 22 of an extrusion cylinder 16, Fig. 2 (not shown), and a rotating screw 18 feeding material along said bore and away from said passage, the wall of the bore has a relief recess 66 which is longitudinally coextensive with the passage outlet and is of decreasing radial depth in the direction of screw rotation. This recess reduces the regurgitation of material from the bore to the passage 46, and in the form shown supplements the action in this way of a recessed filler block 44 which limits the passage 46 in a hopper 12. In a modification the recesses also of progressively decreasing radial depth longitudinally of the bore in the forward feed direction and the surface of the recess facing the screw may merge smoothly with the bore longitudinally as well as circumferentially to facilitate the application of material, absorbed by the recess on primary regurgitation, to the screw on secondary regurgitation. The above action may be further expedited by a plurality of such recesses around the bore and by providing circumferentially spaced longitudinal grooves in said recesses, Fig. 4 (not shown).
Patent GB-626872-A (GB)
Title: Improvements in or relating to under-water breathing devices
IPC: B63C11/22
Filed: 1946-08-27
Abstract: 626,872. Apparatus for breathing under water. L'AIR LIQUIDE SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES G. CLAUDE, and COUSTEAU, J. Y. Aug. 27, 1946, No. 25630. Convention date, Sept. 7, 1945. [Class 81(ii)] Apparatus for allowing breathing under water consists of a mouthpiece A connected by a cock F to an open pipe B for use near the surface where the pipe B is held above the surface, and to air or oxygen apparatus D, E when considerably below the surface. The cock F can be turned to connect either branch of the apparatus to the mouthpiece. Specification 486,479 is referred to.
Patent GB-1526698-A (GB)
Title: Device on printing presses for adjusting the inking form rollers that are capable of being brought into contact with the plate cylinder
IPC: B41F31/30
Filed: 1977-06-20
Abstract: 1526698 Adjusting inking rollers in printing machines ROLAND OFFSETMASCHINENFABRIK & SCHLEICHER AG 20 June 1977 [23 June 1976] 25684/77 Heading B6C A printing press is provided with means for adjusting the inking forme rollers to maintain the same adjustment when extra packing is placed under the plate to accommodate a different length of image. Thus, when plate cylinder 1 is moved a distance #S with respect to cylinder 20 to accommodate the packing, a cam 3 fixed to the plate cylinder bearing correspondingly adjusts the forme rollers, each roller, or its bearing, contacting a curve segment ascending by an amount which, for the movement #S, is equal to #S plus the displacement of the plate cylinder in the direction of the respective forme roller. In a first embodiment, as shown, the plate cylinder is journalled in an eccentric bearing, and the cam surfaces are arcs of circles centred at P, a distance 2e along a line passing through ML, the centre of the cylinder bearing, and MZ, the centre of the eccentric bushing, e being the eccentricity of the eccentric bearing. In another embodiment (Fig. 3, not shown), each cam segment is itself eccentrically mounted and movement of the plate cylinder affects these eccentric mounts.
Patent GB-1027845-A (GB)
Title: Gas blast furnace pressurised by means of a gas turbine engine
IPC: C21B5/06
Filed: 1963-06-28
Abstract: 1,027,845. Gas turbine plant. UNITED AIRCRAFT CORPORATION. June 28, 1963 [July 6, 1962], No. 25799/63. Heading F1G. A system for supplying gas at high temperature and high pressure to a blast furnace comprises a gas turbine engine having a compressor, a combustion chamber and a turbine connected to drive the compressor, the exhaust duct of the turbine being connected to an inlet of the blast furnace. Means are provided for supplying fuel to the turbine exhaust duct whereby the temperature of the gases discharging to the furnace may be increased. The engine shown comprises an air intake 16, compressor 18, combustion equipment 20 and turbine 22, the turbine exhaust duct 24 being connected to the manifold 6 which surrounds the lower part of the blast furnace 2, the turbine exhaust gases passing into the furnace through tuyeres 8. The temperature of the turbine exhaust gases may be increased by means of reheat equipment comprising fuel spray bars 30 and flame holders 38, Fig. 2 (not shown), disposed in the exhaust duct 24. Oxygen may also be supplied into the turbine exhaust duct through a duct 40 controlled by a valve 42. The fuel supplied to the engine combustion chamber 20 may be combustible gas derived from the coke oven 50, the gas being pressurized by a compressor 54. A portion of the blast furnace exhaust gases may be recirculated through duct 44 back to the turbine exhaust duct 24, the gases being pressurized by means of a compressor 46.