baber/WOPTO huggingface dataset:
Patent GB-717485-A (GB)
Title: Improvements in or relating to electrical machines comprising permanent magnets
IPC: H02K21/00
Filed: 1952-12-23
Abstract: 717,485. Magnetic structures; dynamoelectric machines. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 23, 1952 [Dec. 29, 1951], No. 32615/52. Classes 35 and 38(2) An electric machine, such as a motor or generator, comprising a coaxial rotor and stator arranged side by side, embodies in one member material of high coercivity in the form of segments 1, 2 of a disc permanently magnetized in the axial direction, and in the other member pole-shoes 3, 4 and 10, 11 of highly permeable material facing but axially displaced from pole surfaces of the magnetized disc. The thickness of the pole-shoes increases towards windings 8, 12 which are borne between them on parts 9 of reduced cross-section. The permanent magnetic material is such that it is not easily demagnetized, e.g. it may consist of non-cubic crystals of polyoxides Fe and at least one of the metals Ba, Sr, Pb and if desired Ca, such as form the subject of Specification 708,127, and all the magnetic material may have high resistivity e.g. greater than 10<SP>5</SP> ohm-cm, so that the machines are suitable for high frequency operation. In a modification, two pole-shoe structures embraced by one winding may be between two permanent magnetic discs whose outer faces bear highly permeable discs to provide a return path for the flux, Fig. 2 (not shown). The permanent magnet disc may be magnetized in all four quadrants, Fig. 3 (not shown), and there may be four segmental pole-shoes associated with four coils, Fig. 4 (not shown). The pole-shoes may be the faces of spirally wound core 31 carrying windings 27-30 on parts of the core of reduced cross-section, the core becoming thinner to the lines 33 equidistant from adjacent coils, Fig. 5. The pole faces of one polarity on the permanently magnetized disc may be of highly permeable material affixed thereto, Fig. 6 (not shown).
Patent GB-750451-A (GB)
Title: Improvements in or relating to very high frequency energy absorbing or loading devices for wave guides, co-axial lines and the like
Inventor: RUDOLF JOSEF JULIAN
IPC: H01P1/26
Filed: 1953-11-24
Abstract: 750,451. Transmission line terminations. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 2,1954 [Nov. 24, 1953], No. 32630/53. Class 40 (8). [Also in Group XXXVI] Energy in a waveguide 4 or coaxial line 1, 2 is absorbed by a body 3 of germanium or silicon. The body 3 in the guide may have conductors 5, 6 one of which is connected through a D.C. meter 8 to a biasing battery 9 and thence to earth. The meter may be calibrated 'for use as a power measuring device.
Patent GB-447327-A (GB)
Title: Improvements in adjustable chairs
IPC: B64D11/06
Filed: 1934-11-13
Abstract: 447,327. Adjustable seats. IMPERIAL AIRWAYS, Ltd., Victoria Station, Westminster, and BURCHALL, H., The Croft, Woodland Way, Kingswood, Surrey. Nov. 13, 1934, Nos. 32652 /34 and 21838/35. [Class 52 (ii)] An adjustable seat comprises a rigid framework 1, 2, vertically disposed supporting members 6 hinged to the front of the frame 2, a seat frame 12 pivoted to the members 6 and sliding at its rear on a runway 5 forming part of the rigid frame, and a back frame 16 pivoted at its lower end to the rear of the seat frame 12. The rear of the seat is connected to the rigid frame by means of cables 18 passing over pulleys 19, 21 and connected to springs anchored to the frame. The inclination and height of the seat are adjusted by means of hand levers 26 pivoted to the seat frame and actuating links 42 connected to the members 6 ; the hand levers are retained in adjusted position by engaging in notches in quadrants 28 which are pivotally connected to the front of the seat frame and to arm-rest members 31 which at their rear ends are pivoted to the back frame 16. The back may be folded down as shown in Fig. 5, by breaking the joint of a hinged strut 36 connected to the lever 26 and to the back. An adjustable head rest 52 Fig. 1, may be provided, also a detachable foot and leg rest 47. The frame is preferably built up of tubular members, on which canvas &c. is stretched by lacing to support the seat and back cushions. In a modification, the rear of the seat frame is supported on members hinged to the base of the fixed frame instead of sliding on the members 5.
Patent GB-806675-A (GB)
Title: Apparatus for assembling body seat rings
Inventor: FIEROH OTTO EMIL
IPC: F16K3/30
Filed: 1956-10-29
Abstract: 806,675. Making valves; force fits. CRANE CO. Oct. 29, 1956, No. 32900/56. Classes 83 (2) and 83 (4). A machine for assembling seat rings with valve bodies comprises driving means for applying predetermined rotative movement to the seat rings simultaneously in seating or unseating the rings, the said driving means including fluid-actuated means positioned on different planes on opposite sides of the vertical axis of the valve body, shafts co-operating with siad fluid-actuated means to rotate the seat rings, racks and gears movable in opposite directions in response to said fluid-actuated means and means for holding the said seat rings in predetermined spaced apart position relative to the valve body while imparting said rotative force to said rings. A gate valve body 1 is held securely on the machine stand 3 by a clamp 7. Wrench heads 15 positioned on threaded seat rings 11 and 12 and spaced apart by a member 19 are loosely threaded in the valve body prior to the clamping. The spaced member 19 comprises a cylindrical member 21 enclosing spring-loaded ball-bearings 26. The wrench heads are rotated by shafts 37 and 38 operated by oppositely disposed gear racks 48, 51 and 49, 52 in arbor mountings 42 and 43 respectively which also carry axially movable drive shafts 58 and 59 coupled to the drive shafts 37 and 38. Fluidpressure pistons 72 and 73 operate the racks 51 and 48 respectively. The final tightening of the seat rings occurs within 90 and 180 degrees of shaft rotation. The drive shafts are withdrawn from the wrench heads after the seating operation by withdrawal pistons 92 connected to cross-arms 96 rigidly attached to the shafts 58 and 59.
Patent GB-1078862-A (GB)
Title: Improvements in or relating to the production of manganese dioxide
Inventor: MACKEY E SCUDDER
IPC: G03C1/825
Filed: 1964-08-12
Abstract: The production of MnO2 comprises contacting, in hot aqueous acid medium, KMnO4 with a starch ether or a quaternary ammonium salt thereof having the formula <FORM:1078862/C1/1> wherein X is starch, R is a radical containing from 1 to 5 carbon atoms inclusive chosen from alkylene or hydroxyalkylene radicals and R1 and R2 are alkyl of from 1 to 4 carbon atoms inclusive, aryl or aralkyl radicals. Examples of the alkylene radical are methylene, ethylene, propylene, isopropylene, butylene, isobutylene or pentamethylene and examples of the hydroxyalkylene radical are hydroxyethylene, hydroxypropylene or hydroxybutylene.  The aryl group may be phenyl, toluyl and the aralkyl group may be benzyl.  The starch ether may be used in an amount by weight of 3-5 times the weight of KMnO4.  The starch may be untreated starch, starch derivatives including dextrinized, hydrolysed, oxidized, esterified or etherified starches wherein the starch may be derived from any source such as corn, wheat, potato, tapioca, waxy maize, sago or rice.  An anti-halation layer may be prepared by adding gelatine to the starch permanganate reaction product containing MnO2, the solution then filtered and coated on a film base, e.g. cellulose triacetate.
Patent GB-1513976-A (GB)
Title: Etching processing apparatus
IPC: B41N3/08
Filed: 1976-08-09
Abstract: 1513976 Etching apparatus IWATSU ELECTRIC CO Ltd 9 Aug 1976 [30 Sept 1975] 33104/76 Heading B6J To prevent "pinhole" blemishes due to dust or bubbles adhering during etching to the surface of a lithographic master 13, the master 13 is conveyed by a driven endless belt 8 through etching liquid in a vessel 4 and the surface to be etched is rubbed with a roller 27 comprising a shaft 29 and a rubbing member 30. The member 30 may be formed of sponge, cotton wool or fur.
Patent GB-177568-A (GB)
Title: Improvements in automobile anti-aircraft gun mounts
IPC: F41A23/34
Filed: 1920-11-24
Abstract: 177,568. Christie, W. Nov. 24, 1920. Field carriages.-The steering-wheels of an end less-track or other automobile mount for an anti aircraft gun are supported on arms 21 rocking on transverse tube 20 against the action of spring 41. Each spring device is furnished with a rod 43, the upper end of which has a nut 44 and rubber washer 45 to limit positively the separa tion of the wheels and frame, and a screw stop 48 engages the rod to limit positively the move ment of the frame towards the wheels. The springs may be put out of action when firing by screwing the stops 48 down on to the rods 43.
Patent GB-1179804-A (GB)
Title: Illuminating projectiles
Inventor: MAKOW ABRAHAM
IPC: F42B12/62
Filed: 1968-07-11
Abstract: 1,179,804. llluminating projectiles. ISRAEL, MINISTRY OF DEFENCE. 11 July, 1968 [30 July, 1967], No.33187/68. Heading F3A. An illuminating projectile particularly in the form of a mortar bomb or a bomb adapted to be dropped from an aircraft, comprising front and rear body portions 2 and 3 secured together by shearable rivets 8; an illuminant assembly 9 connected via a flexible cable 22 to a main parachute 25 and via a flexible cable 30 to an auxiliary parachute 29, the main parachute being releasably contained in a flexible casing 26 connected via a flexible line 28 to a disc 28a secured in the rear body portion; a rocket motor 17 having rearwardly directed orifices 19, and connected to the base 12a of the illuminant assembly by a rod 15; and an expelling charge (not shown) located in the nose of the body. The illuminant 10 and an ignition charge 13 are contained in an inhibitive envelope 11 in a container 12. In use, the expelling charge is ignited at a preset time after launching the projectile and as a result the rivets 8 are sheared, and the illuminant assembly still coupled to the rear body portion is expelled from the front body portion, which continues along its initial trajectory. At the same time the rocket motor is ignited and draws the illuminant assembly and the parachutes away from the rear body portion. Simultaneously, the auxiliary parachute opens, retarding the illuminant assembly and diverting it from the trajectory of the rear body portion. When the rear body portion and the illuminant assembly are adequately spaced apart, strain on the flexible line 28 pulls the casing 26 off the main parachute, and the illuminant assembly falls under the main parachute. The auxiliary parachute is burnt by the heat from the illuminant assembly.
Patent GB-1047728-A (GB)
Title: Projector installation
IPC: G03B37/00
Filed: 1964-08-14
Abstract: 1,047,728. Projection apparatus;panoramic viewing. T. GANZ and A. GANZ. Aug. 14, 1964 [Aug. 16, 1963], No.33262/64. Headings G2E and G2J. A panoramic projector assembly comprises a hollow dome 3, internally viewed from platform 10, and having translucent foil surfaces 20 upon which images are projected from a plurality of projectors 4 externally of the dome to form a composite picture there being a separate projector for each surface 20. To save space, reflectors 5 may be used with some of the projectors, and screens 11 exclude light from adjacent projectors. Still projection from slides or cine projection is used, the optical axes meeting at the point 7. The translucent foil is stretched on separate frames which define each surface 20 and which are attached to a skeleton framework. Alternatively, the dome 3 may comprise an inflatable structure whose skin is translucent. The projectors are operated by remote control.
Patent GB-680620-A (GB)
Title: Apparatus for harvesting under-water seaweed
Inventor: HAY JOHN MORRISON
IPC: A01D44/00
Filed: 1948-12-25
Abstract: 680,620. Gathering seaweed. SCOTTISH SEAWEED RESEARCH ASSOCIATION. Dec. 19, 1949 [Dec. 25, 1948], No. 33336/48 Class 6 (iii) A receptacle adapted to be dragged over the sea-bed to gather seaweed comprises a perforated box 1 mounted on skids 2 and provided at its open front end with knives 13 which sever the weed. The rear of the box comprises a door 8 to which the dragging cables are attached and through which the weed can subsequently be removed. Curved guards 14 protect the forwardlyprojecting knife-points. Horizontal sidewings 3 prevent the receptacle from tilting sideways. In modifications, the door 8 may be removed and replaced by a detachable net, and a bouyancy-tank attached to the top of .the box so that the device only just sinks.
Patent GB-1416423-A (GB)
Title: N-6-disubstituted adenoseine derivatives
IPC: C07H19/167
Filed: 1974-07-29
Abstract: 1416423 N(6)-disubstituted adenosine derivatives BOEHRINGER MANNHEIM GmbH 29 July 1974 [31 July 1973] 33404/74 Heading C2C The invention comprises compounds of general formula and pharmacologically compatible salts thereof, where R 1  is an alkyl or cycloalkyl radical substituted by a hydroxy group or an alkoxy radical, and R 2  is an alkyl radical or a cycloalkyl or bicycloalkyl radical optionally substituted by an alkyl radical. These compounds are prepared by reacting a picrine riboside of general formula where Z is a halogen atom, a reactive mercapto group or a trimethylsilyloxy radical, with an amine R 1 NHR 2  preferably in an inert solvent, e.g. n-propanol, isopropanol, butanol, tetrahydrofuran or dioxane, preferably in the presence of a tertiary amine, e.g. triethylamine. The hydroxyl groups of the ribose residue may be blocked by protective groups which are split off after the reaction. In the examples Z is Cl, and the protective groups when present are acetyl groups which are subsequently removed by alkaline hydrolysis. The compounds of the invention have antilipolytic, anti-hyperlipaemic and anti-hypercholesterolaemic action.
Patent GB-699292-A (GB)
Title: Improvements in or relating to heat-resisting and heat-insulating materials
Inventor: LOCKE WALTER FREDERICK
IPC: C09D5/18
Filed: 1949-12-30
Abstract: 699,292. Fireproof coverings. FIREPROOF TANKS, Ltd. Nov. 22, 1950 [Dec. 30, 1949], No. 33424/49. Class 64 (ii) [Also in Group VIII] A heat-resisting, sheet material for making panels, bulkheads or containers on aircraft, vehicles or vessels, is formed by covering at least one face of a sheet of aluminium, magnesium or an alloy in which one or both of these metals predominates, with a layer of woven glass or quartz fabric impregnated with a vinyl or vinylidine resin or a halogenated hydrocarbon polymer. There may be other layers, e.g. of glass or quartz fabric or including a layer of meshed or perforated metal. Polyvinyl chloride, a vinyl halide-acetate copolymer, polyvinylidine halides or halide copolymers or poly-fluorochloroethylene, compounded with tricresyl phosphate and titanium dioxide or earth colours as plasticizer and filler, are used for bonding. In a particular example, a sheet of "Duralumin" (Registered Trade Mark) is painted with a primer containing vinyl acetate-chloride copolymer, filler, plasticizer, solvents and a small amount of lead carbonate and has applied to it a layer of glass fabric impregnated and coated with the primer. Then a second, similar layer is applied to the first. The glass surface of the material may be coated with metal powder or metal lacquer. The Provisional Specification describes also a material consisting entirely of glass fabric and synthetic resin bonding or including metal foil.
Patent GB-748800-A (GB)
Title: Electric selector device
IPC: G05B11/32
Filed: 1953-12-02
Abstract: 748,800. Electric selective signalling. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Dec. 2, 1953 [Dec. 12, 1952], No. 33461/53. Class 40(1) In an arrangement for selecting (a) the highest voltage from a group of direct voltages representing e.g. physical quantities (b) the lowest voltage from a second group of direct voltages and' (c) from the pair of voltages so derived selecting the larger or the smaller as required, the first group of voltages are connected at 8, 9, 10 ... &c. between a neutral conductor 1 and a negative conductor 6, and the second grcup are connected at 11, 12 ... &c. between the neutral conductor 1 and a positive conductor 4. Each source 8-12 is series connected with a static rectifier, 13-17 and the conductors 4, 6 are connected via resistors 5, 7 to respective batteries 2, 3. With a rectifier 18 disconnected, a current 17 flows from battery 3 through that one of the first group of voltage sources 8, 9, 10 &c. having the highest voltage, and the resistor 7. the selected voltage appearing at terminals 19-20. Similarly, a current 15 flows from battery 2 only through that one of the second group 11, 12 ... of voltages having the lowest voltage, and resistor 5, the lowest voltage thus selected from the second group appearing at terminals 20, 21. With the rectifier 18 connected as shown, it conducts if the selected one of voltages 11. 12 ... is greater than the selected one of voltages 8, 9, 10 ... and, provided that I 5  is greater than I 7 , blocks the sources 8, 9, 10 ... so that both conductors 4, 6, and therefore terminals 19, 21 assume the potential of the selected one of sources 11, 12 .... If the selected voltage of group 11, 12 ... is less than that selected from group 8, 9, 10 ... rectifier 18 is blocked and the two selected group voltages appear at the respective terminals 19. 21. The larger of the two selected voltages thus always appears at terminal 19. If, however, I, is made less than I, by suitable values of the resistors 5, 7 the smaller of the two selected group voltages appears at terminal 21. More complex selections may be effected by combining several devices such as that shown.
Patent GB-191585-A (GB)
Title: Improvements relating to spring mattresses
IPC: A47C23/043
Filed: 1921-12-13
Abstract: 191,585. Hoskins & Sewell, Ltd., and Benwell, W. H. Dec. 13, 1921. Helical springs. - In spring mattresses, of the kind comprising spiral springs coupled together by wire links or the like, the upper ends of the spiral springs a are formed with at least two complete adjacent convolutions c of equal diameter which are secured together by bending round them the end d of the wire forming the spring. The convolutions c are embraced bv all the links b coupling the spring a with adjacent springs.
Patent GB-506672-A (GB)
Title: Improvements in and relating to spot welding machines
IPC: B23K11/31
Filed: 1937-12-06
Abstract: 506,672. Electric welding. BRITISH THOMSON-HOUSTON CO., Ltd., and TUCKER, N. A. Dec. 6, 1937, No. 33718. [Class 83 (iv)] A spot welding machine comprises two piston-like members operating in a main cylinder, one member carrying an electrode and the other being connected to the means for reciprocating it in the cylinder, an inlet port being provided for admitting air or gas between the two members for moving the electrode member downwards on the down stroke of the driven member and a lost motion connection being provided between the members for raising the electrode member during the up-stroke of the driven member. The piston like members may have metallic piston rings. The main cylinder 1 houses a piston 3 driven by an eccentric 7 from an electric motor &c., and an electrode carrying piston 2. The piston 2 is hollowed to form a cylinder 9 in which slides an auxiliary piston 12 carried by the piston 3. The end of the cylinder 9 is closed by a head 10 continuously open to air or gas pressure through a port 14 from a receptacle 13, and provided with ports 15, 16 communicating with opposite sides of the piston 12. During the downward stroke of the piston 3, the piston 2 is driven down by air pressure and towards the end of the up stroke of the piston 3, the piston 12 engages the head 10 to return the piston 2 to the position shown. The port 16 may be provided with a throttle valve to vary the cushioning effect on the up stroke of the piston 3. In Fig. 2, the piston 3 driven by the eccentric 7 forms a sleeve valve, being provided with ahead 26, and with inlet ports 17, 18 co-operating with ports 21, 22 in the receptacle 13 and with exhaust ports 19, 20, co-operating with ports 23, 24 in the cylinder 1. The electrode carrying piston 2 has a piston rod 27 passing through the head 26 and provided with a piston 28. With the. piston 3 in the position shown the ports 18, 22 are in alignment and the electrode piston is in its raised position. During descent of the piston 3 ports 20, 24 are connected to exhaust and ports 17, 21 to pressure to lower the piston 2. During upward movement of the piston 3, ports 19, 23 are connected to exhaust and ports 18, 22 are connected to pressure to raise the piston 2.
Patent GB-324739-A (GB)
Title: Improved ventilation device for windows
IPC: E06B7/02
Filed: 1929-04-19
Abstract: 324,739. Taylor, J. A. April 19, 1929. Ventilators. - A device for permitting ventilation without opening windows of the kind which are balanced one against the other, consists of a hinged block d on the top rail of the top sash.
Patent GB-1167789-A (GB)
Title: Improvements to bicycles and like saddles.
Inventor: ADCOCK FREDERICK ARTHUR
IPC: B62J1/00
Filed: 1967-07-22
Abstract: 1,167,789. Cycle saddles. RALEIGH INDUSTRIES Ltd. 14 June, 1968 [22 July, 1967], No. 33828/67. Heading B7E. A cycle saddle comprises a metal base 11 formed with a platform 11a, depending flanges 11b, V-shaped supports 11d for a top 12 and an upstanding part-cylindrical rear flange 11c, the said top consisting of a skin 12b filled with a synthetic foamed material 12c and adapted to be stuck to the base by adhesive. Depending flanges 12a of the top rest on supports 11d. The base has fitted beneath it a mounting bracket 14 covered by member 15 of V-section formed with a hand grip 15d and an aperture 15e through which the bracket extends. The base 11 rests on ribs 16.
Patent GB-482471-A (GB)
Title: Improvements in heating elements for thermionic cathodes
IPC: H01J1/22
Filed: 1936-12-10
Abstract: Heating elements for thermionic cathodes are composed mainly or entirely of perowskite or of the titanates of strontium or barium having a crystal structure similar to that of perowskite, or a mixture of these titanates, the oxygen content of the titanates being less than the stoichiometric content which is in equilibrium with the atmosphere.  The oxygen content may be so reduced by heating the titanate in a reducing gas, e.g. at 1500-1800 DEG  C. for 30-60 minutes in hydrogen.ALSO:Heating elements for thermionic cathodes are composed mainly or entirely of perowskite or of the titanates of strontium or barium having a crystal structure similar to that of perowskite, or a mixture of these titanates, the oxygen content of the titanates being less than the stoichiometric content which is in equilibrium with the atmosphere.  The oxygen content may be so reduced by heating the titanate in a reducing gas, e.g. at 1500-1800 DEG  C. for 30-60 minutes in hydrogen.  The titanates may be mixed with an insulating additive such as excess of oxide of the alkaline earth metal, this excess may amount to ,1 mol. of the oxide to 1 mol. of the titanate.
Patent GB-1437798-A (GB)
Title: Target for use in electronic tubes and method of making same
IPC: H01J29/41
Filed: 1973-07-18
Abstract: 1437798 Making C.R.T. storage targets TEKTRONIX Inc 18 July 1973 [3 Aug 1972] 34142/73 Heading B3A [Also in Divisions C7 and H1] A C.R.T. storage target comprises a dielectric with random cracks which may be formed on a regular or irregular mesh. The mesh may be formed by depositing a 1000-2000  Cr layer 54 through cracks 38 of a target electrophoretically formed (see Division C7), removing domains 36, exposing adjacent photo-film (56) (Fig. 8, not shown) through the base, developing the film and placing on an electroforming mandrel with a positive resist, exposing, processing, deposition Ni in to the voids in the resist by plating, and dissolving the resist. The free mesh is Cr coated (1000) on both sides, and dielectric 36 (Fig. 10) deposited electrophoretically (Figs. 4-6, not shown).