baber/WOPTO huggingface dataset:
Patent GB-1340136-A (GB)
Title: Insulated metal conductor
IPC: H01B3/44
Filed: 1971-04-19
Abstract: 1340136 Cables HUGHES AIRCRAFT CO 19 April 1971 [9 Feb 1971] 25738/71 Heading H1A A conductor is wrapped with one or more layers of an electrically insulating film or fabric tape having a sealant adhesive coating of an addition cure polyimide polymer of the structure shown (before curing), to provide a heat resistant insulation. A method of making such an insulated conductor comprises preparing a lacquer solution of polyimide polymers, for example by dissolving a polymer of the structure shown in p-dioxane and dimethyl formamide, coating a heat resistant insulating polyimide film tape with the lacquer and drying the coating, "B" stage polymerizing the polyimide polymers by heating in an oven, wrapping the composite tape about a conductor, for example multifilament silver plated copper wire, and finally heat curing the coating to a substantially void free sealant state. A further coating of tetrafluoroethylene polymers and/or tetrafluoroethylenehexafluoropropylene copolymer may be subsequently added if required.
Patent GB-903868-A (GB)
Title: Method of manufacturing phenols
IPC: B01J8/24
Filed: 1959-07-27
Abstract: Phenol or cresol is produced by the oxidation of benzene or toluene, respectively, the oxidation being carried out by contacting a mixture of the appropriate hydrocarbon vapour and oxygen-containing gas with a fluid-bed of particles of non-catalytic solid material, such as bauxite or sand, at a temperature of 550 DEG  to 750 DEG C.  The use of the fluid-bed enables the reaction to be maintained within approximately 10 DEG C. of the desired operating temperature.  The average size of the solid particles should preferably be about 40 mesh.  The reactor may be lined with aluminium oxide brick, or it may be covered with sprayed aluminium oxide.  The specific description relates to the production of phenol by passing a mixture of benzene vapour and air, in the volume ratio of 1:1, through a stationary fluidized bed of inert particles.  Part of the feed gas mixture is preheated to 450 DEG -500 DEG C. by heat-exchange with the product gases from the reactor.  The Specification is accompanied with a Figure of suitable apparatus.  Specification 439,356 is referred to.
Patent GB-1499106-A (GB)
Title: Actuating mechanism for vacuum interrupters
IPC: H01H33/666
Filed: 1975-05-23
Abstract: 1499106 Vacuum switches ASSOCIATED ELECTRICAL INDUSTRIES Ltd 23 May 1975 [11 June 1974] 25839/74 Heading H1N A vacuum switch operating mechanism comprises a plate 16 connected to the movable contact rod 7 of the switch and two parallel bell crank levers 9 whose first ends are connected to the switch driving means and whose other ends are connected to a pin 15 which passes through two eyebolts 17 whose shanks pass through guides 19 in the plate 16 and retain bias springs 20 urging plate 16 towards the switch, the arrangement being such that to open the vacuum switch the bell cranks are rotated to draw the pin 15 and eye bolts 17 away from the switch until nuts 48 on the bolts catch the plate 16 and draw it and thus the movable contact in a direction to open the switch, whilst to close the switch the bell cranks are rotated in the reverse direction allowing springs 20 to apply pressure to plate 16 to move it and the movable contact in a direction to close the switch, the eye bolts continuing to move after the contacts have closed to compress springs 20 and move nuts 48 out of contact with the plate 16 to allow compensation for contact wear. Further springs (26) provide a toggle-like action, Fig. 3, not shown, and an indicator is provided to indicate contact wear, Fig. 1, not shown.
Patent GB-1155562-A (GB)
Title: Improvements in or relating to Electric Circuit Arrangements Employing Field Effect Transistors
Inventor: HUTCHEON IAN CARRODUS
IPC: H03G3/30
Filed: 1965-06-18
Abstract: 1,155,562. Measuring bridge circuits; measuring displacement electrically. GEORGE KENT Ltd. June 17, 1966 [June 18, 1965], No. 25919/65. Headings G1N and G1U. [Also in Division H3] In an arrangement for measuring displacement, displacement of core 29 in inductors 26, 27 unbalances a bridge network comprising the inductors as one branch. The second branch comprises the current paths of series-connected field-effect transistors 10, 11. The bridge network is fed with A.C. from oscillator 30 and when unbalanced produces on output which is amplified by amplifier 32 and demodulated by demodulator 33. The resulting D. C. output is fed to meter 36 and also passes through resistors 17, 18 whereby the gate electrodes of transistors 17, 18 are differentially biased, producing a differential change in impedance such as to restore the bridge to balance. The transistors obtain a fixed standing bias from battery 15. Meter 36 may be located at a remote point and connected in series with a battery 37 for energizing the apparatus, a steady potential for this purpose being picked off across a Zener diode 38 in the connecting lead. The arrangement may be made insensitive to temperature changes by connecting adjustable resistors in series with the transistors; alternatively, adjustable resistors may be connected in shunt with the transistors, further temperature sensitive resistors being connected in series with resistors (17, 18, Fig. 5, not shown). The sensitivity of the arrangement may be made adjustable by connection of the end electrodes of the transistors to a potentiometer arranged in parallel with the oscillator Fig. 6 (not shown); alternatively resistors may be arranged in series between the join of inductors 26, 27 and a centre-tapping on the oscillator and comprising a potentiometer from which the output is taken Fig. 7 (not shown). In both these arrangements temperature-variable resistors may be used to compensate for a temperature coefficient in the displacement-sensitive device. In order to prevent modulation of the gate voltage by the energizing signal across the transistors, a proportion of the voltage across the end electrodes may be applied to the gates by means of potentiometer networks Fig. 8 (not shown). In order to obtain a current output which is non-linearly related to the displacement the demodulator 33 may be followed by a non-linear network: alternatively the transistors (10, 11, Fig. 9, not shown) may have connected in parallel with their gates the gates of a further pair of field-effect transistors (57, 58), the sources of which are energized via the centre-tapped secondary (59) of a transformer, the primary (60) of which is energized from the common point (14) of the first pair of transistors, while the amplifier (32) is fed from the common point of the second pair of transistors (57, 58).
Patent GB-260003-A (GB)
Title: Improvements relating to mechanical hammers
IPC: B25D11/12
Filed: 1926-10-18
Abstract: 260,003. Muto, U. Oct. 17, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Percussive hand tools.- A mechanical hammer for use in stone works, foundries, &c. comprises a member 4 reciprocated through the medium of springs 9, 10 by a crank and connecting rod or the equivalent. The connecting rod 3 driven by an eccentric 2 on the shaft 1 is screwed into a ball &c. 3<1> disposed between washers 7, 8 backed by the springs. The member 4 has a hollow head '5 which delivers blows to the tool mounted in the socket 6. The device is contained in a casing A with handle B, the front portion A<1> having an air vent 11. The connecting rod may be replaced by a slide having rollers in con. tact with the eccentric.
Patent GB-260199-A (GB)
Abstract: 260,199. Mitchell, W. July 8, 1926. Concertinas. - The accidentals are obtained from the corresponding natural keys by reversing the direction of operation of the bellows. The keys are arranged consecutively across both keyboards alternately in rows of four, with two extra at the top as shown. C and G are obtained by compressing, D, F and A by expanding, the instrument. Specification 259,703 is referred to.
Patent GB-1031285-A (GB)
Title: Device for the fluidization of powdered materials
IPC: B01J8/44
Filed: 1963-07-01
Abstract: 1,031,285. Pneumatic conveyers. INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE. July 1, 1963 [Aug. 17, 1962; Dec. 1, 1962], No. 26032/63. Heading B8A. A fluidized tank 1, Fig. 2, for distributing granular &c. material through multiple outlets 2 has multiple porous pipes 4 uniformly spaced over the base and connected to a single distributer conduit 3b. The pipes may be of sintered bronze or may be mechanically pierced or fitted with multiple nozzles, and are embedded as at 10 in pitch, cement or plastic.
Patent GB-298980-A (GB)
Title: Improvements in and relating to the production of artificial fog
IPC: C06D3/00
Filed: 1928-09-11
Abstract: 298,980. Hanseatische Apparatebau- Ges. vorm L. von Bremen & Co. Oct. 18, 1927, [Convention date]. Artificial fog, producing.-In the formation of artificial fog by the atomization under pressure of a fog-forming acid material such as sulphur trioxide dissolved in chlorosulphonic acid, the pressure is produced at the moment of use by the generation of gases by the dehydrating reaction of the fog-forming acid on organic substances such as formic or oxalic acid.
Patent GB-380596-A (GB)
Title: Improvements in or relating to road sweeping or cleansing machines
IPC: E01H1/08
Filed: 1932-06-11
Abstract: 380,596. Road-sweeping machines. LEWIN, W. J., Sunny dale, Barwick Road, Scholes, near Leeds. June 11, 1932, No. 26137/31. [Class 107.] A road sweeping-machine comprises a rotary brush 1 delivering to a casing 3 which is provided with a helical conveyer 4 for carrying the heavier refuse to an elevator 5. discharging into a compartment 6, whilst the dust and lighter matter is withdrawn from the casing 3 by an air current and delivered to a separate compartment. The casing 3 may contain right and left-handed helical conveyers 4 delivering to the casing 5x of the elevator 5. Dust and other light matter is drawn out of the casing 3 through flexible pipes 9 by a fan 10 which delivers into compartments arranged at each side of the compartment 6. Such compartments may contain water and the dust is then delivered in close proximity to, or below, the surface of the water. Canvas bags may be substituted for the water for retaining the dust. The casing 3 and brush casing 2 are pivotally mounted at the lower end of the elevator 5 and are maintained in proper relationship with the ground by a trailing wheel 21. The casings 2, 3 are adapted to be raised by winding gear 21x. The brush 1 is hung from an unbalanced lever 18 carried by a bracket 19 on the casing 2, and minor adjustments in the height of the brush may be effected by a screw 20. The fan 10, elevator 5, and conveyors 4 are adapted to be driven from the driving motor of the vehicle.
Patent GB-211832-A (GB)
Title: Process for rendering porous electrodes impermeable to liquids
IPC: H01M4/00
Filed: 1923-10-19
Abstract: 211,832. Soc. Anon. le Carbone. Feb. 21, 1923, [Convention date]. Proofing.-Electrodes for galvanic batteries &c. are rendered impermeable to liquids but permeable to gases by a coating of a metal soap such as zinc oleo margarate which may be spread over the electrodes by means of a spatula. The metal soap may be prepared by adding a solution of zinc chloride to a solution of Marseilles soap and filtering off the precipitated zinc soap. The electrodes may also be treated by first immersing them in a boiling solution of Marseilles soap and then in a solution of a metal salt such as zinc chloride.
Patent GB-513411-A (GB)
Title: Improvements in machinery for producing corrugated sheets
IPC: B21D13/02
Filed: 1938-01-03
Abstract: 513,411. Corrugating. DANGERFIELD, H., and LLOYD, H. P. Jan: 3, 1938, No. 26176/39. Divided out of 513,363. Drawings to Specification. [Class 83 (iv)] Comprises the corrugating-machine described in Specification 513,363, and claims the pivotally arranged conveyer thereof. Specification 426,495 also is referred to.
Patent GB-187820-A (GB)
Title: Improvements in or relating to apparatus for softening boot and shoe stiffeners
IPC: A43D95/12
Filed: 1921-10-04
Abstract: 187,820. International Shoe Findings, Ltd., and Brown, E. T. Oct. 4, 1921. Coating-appliances, hand. -Apparatus for softening shoe stiffeners such as toe puffs by dipping into a liquid softening medium comprises two tanks 1, 1<a> removably supported on rods 12 in a container 6. Each tank has a channel-shaped or semicircular bottom 2 and a hinged lid 3 formed with a channel 5 pierced with holes 4, and the tank 1<a> has supporting rods 13 in the bottom. The container 6 has a hinged lid 7 adapted to be supported in open position bv a notched lever. A number of stiffeners a are supported in a carrier 14 of wire having a handle 15. In operation, a loaded carrier is immersed in liquid in the tank 1, then set to drain in the tank 1<a> which contains a small amount of liquid, and finally drained on one of the lids 3.
Patent GB-284015-A (GB)
Title: Improvements in and relating to vehicle headlamps provided with anti-dazzle means
IPC: B60Q1/124
Filed: 1926-10-21
Abstract: 284,015. Viggor, A. B. Oct. 21, 1926. Vehicle lamps, directing. - In headlamps adapted to be swivelled about an axis inclined at an angle of less than 45‹ from the vertical, the lamp is supported by a bearing member the inclination of the axis of which may be adjusted laterally and longitudinally of the vehicle by independent means. In one form, each of a pair of lamps 13 has a spindle 19 rotatable in a bearing member 15 secured adjustably by a screw 16 and nut 17 to an enlargement 14 on a cross-bar 10, which can be rotated in brackets 11 and secured by nuts 12. The spindles 19 are connected by arms 23, 26 with a link 29, the arm 23 forming part of a bell-crank lever connected by links 30, 35 and a bell-crank lever 33 with a pivoted hand-lever 37 on the dashboard, or with a pedal. The lever 37 has a knob 43 carried by a spring-pressed rod 42 having a pin 41, which projects through a slot 40 and engages a cam 46, shaped or notched to hold the lever in two or more positions. Alternatively, the lamps may be operated by an electric motor, servomotor, solenoid or other prime-mover or by manually or foot-controlled fluid pressure. The electric motor is mounted on the cross-bar 10 and is connected by gearing and a lever with the link 29, which is articulated near the point of connection of the lever. The fluid-pressure control means may comprise a cylinder 58, Fig. 7, having a plunger 61 and connected by a tube 53 with a cylinder 51 containing a spring-pressed piston 52 having an arm 56 connected to the articulated link 29. The plunger 61 may be locked in the inner posi. tion by engaging a pin 64 in a bayonet slot 65. The cross-bar 10 may be mounted in brackets secured to the mudguards, the adjacent faces of the bar and brackets being correspondingly toothed for securing the bar in the adjusted position. According to one of the Provisional Speci-- fications, the bearing member is formed by a boss forged upon the cross-bar. Specifications- 102,431 and 263,920 are referred to.
Patent GB-687744-A (GB)
Title: Improvements relating to photographic shutters
IPC: G03B9/10
Filed: 1950-10-27
Abstract: 687,744. Photographic everset shutters with delayed exposure means. AGFA CAMERA WERK MUNCHEN U.S. ADMINISTRATION. Oct. 27, 1950 [Oct. 28, 1949], No. 26320/50. Class 98 (i). In an everset pivoted apertured disc shutter, operation of the release device tensions the shutter and releases a delayed action mechanism which in turn releases the shutter. As shown, a disc 1 pivoted at 1a is connected by a spring 12 to a lever 2 pivoted at 11 and urged by a returnspring 10 against the shutter operating trigger comprising a manually operable button 5 and a rod 7 operable by an antinous cable. On operating the trigger, the lever 2 moves the end 13 of the spring to tension the spring until the end passes the dead centre position, when the disc 1 normally rotates to open the shutter, the shutter closing when the lever 2 is returned by its spring. A delayed action mechanism 3 may be set by anticlockwise movement of its arm 19 in the rest position of the shutter, when its segment 17 engages in a recess 18 in the shutter disc to lock it, a bell-crank lever 4 being moved anticlockwise by a spring 14 and latching the delayed action mechanism set by engaging a nose 16b thereon. On operating the trigger, the lever 2 rotates anticlockwise and its arm 2c rocks the bell-crank lever 4 to release the delayed action mechanism and then slides past the bellcrank lever to tension the shutter spring 12. The spring 14 then re-engages the arm 4a of the bell-crank lever with a cam 16 on the delayed action mechanism which slowly rotates to free the disc 1 from segment 17, the lever 2 being held in the set position by the arm 4b of the bell-crank lever. When the disc 1 is freed, it rotates clockwise to open the shutter which is closed by the return of the lever 2 under the action of the return spring 10.
Patent GB-282190-A (GB)
Title: An improved device for silencing the engine exhaust of motor cars, cycles or the like
IPC: F01N13/18
Filed: 1926-10-21
Abstract: 282,190. Mills & Co., Ltd., L. N., and Mills, L. N. Oct. 21, 1926. Exhaust-silencers.- The silencer consists of a baffle inserted in the exhaust pipe, the baffle comprising two or more helical spring coils a wound over a stranded core b. The core consists of metal wire or strip bent upon itself to form an eye c for a retaining bolt and then twisted. The convolutions a<1> of the spring coils are threaded between those of the core as shown in Figs. 4 and 5 so as to form a rigid structure.
Patent GB-469292-A (GB)
Title: Improvements in and relating to wheels for aircraft
IPC: B60B3/00
Filed: 1936-09-29
Abstract: 469,292. Vehicle wheels. ELEKTRONMETALL GES. Sept. 29, 1936, No. 26364. Convention date, Oct. 21, 1935. [Classes 103 (i) and 144 (ii)] To protect the tyre of an aircraft landing- wheel from heat generated in a brake-drum fitted directly under the rim-shoulder, a non- conducting liner is fitted to the tyre-seating surface and/or the brake-seating surface of the rim. Fibrous material, or sprayed-on metal of low conductivity, may be used, the Figure showing the application of such liners 6, 2 on both surfaces of the rim 5.
Patent GB-814832-A (GB)
Title: Improvements in or relating to electrical apparatus having a winding on a core
IPC: H01F41/00
Filed: 1956-08-29
Abstract: 814,832. Potting electrical components. WAYNE KERR LABORATORIIS Ltd., and FLETCHER, K. A. Aug. 21,1957 [Aug. 29,1956], No. 26411/56. Class 87(2). [Also in Group XXXV] A potted inductive device has resilient material disposed between a magnetic core and the potting resin. As shown a winding 18 is disposed on a wound core formed from four C- shaped parts and a rubber band 20 is disposed about the periphery before potting. The winding may be of epoxy or silicone enamelled wire on a bobbin of paper and resin and the band 20 may be of natural rubber or silicone rubber. Alternatively the resilient material may be formed in situ from silicone rubber paste. Such core parts as are not covered with the resilient material may be coated with a release agent such as silicone grease, carnauba wax, cellulose varnish or polythene. The potting resin may be polyester resin, epoxy resin or a mixture of polysulphide and epoxy resins and may include a filler such as mica, glass, alumina, silica, calcium carbonate, nylon or polyurethane.
Patent GB-1599704-A (GB)
Title: Protected documents
IPC: G03G13/01
Filed: 1978-01-10
Abstract: PROTECTION SYSTEM FOR DOCUMENTS of the Invention A system to protect documents such as negotiable instruments, title instruments and identification documents. from illegal copying by color copiers and alteration such as amount or signature particularly computer printout documents comprising preprinting a "VOID" pattern over the amount and/or signature area of the document in solvent insoluble or color change ink.  The VOID is printed with a camouflage pattern overcoating.  The camouflage pattern overcoating may be a pattern or solid coating.  It may be a coating on the undersurface of the Mylar* film overlay of the "VOID.  Thereafter the disclosure contemplates adhering the Mylar*film to the document to be protected over the amount and/or signature area with cold pressure. Color copying by machine is prevented by the use of colors in the inks which are below the critical density of the copier, so as to verify the authenticity of a document and prevent fraudulent use of a copy. *Trademark
Patent GB-773036-A (GB)
Title: Improvements in or relating to rotary-piston heat engines
IPC: F02G1/02
Filed: 1955-09-16
Abstract: 773,036. Rotary motor plant. NSU WERKE AKT.-GES., and WANKEL, F. Sept. 16, 1955 [Sept. 17, 1954], No. 26596/55. Class 110 (2). A rotary engine plant comprises a rotary pump unit which supplies cooling air to a rotary internal-combustion engine unit and a rotary hot-air engine unit which is driven by the heated cooling air. The three units are each of the n and n+1 lobes type having an inner and an outer rotor, the three outer rotors being connected together to form a common outer rotor. In Fig. 1 the three inner rotors are also connected together and are geared to the outer rotor by gearing 15, combustion air entering the I.C. engine unit 6 through a passage 8 in a shaft 7 and is exhausted through port 9. Cooling air is drawn into the pump unit 4 through a port 10 and passes through cooling passages 12 around the I.C. engine unit, the heated air then entering the hot-air engine unit through ports 13 and being exhausted through a port 14. The heated cooling air may pass round the exhaust pipe of the I.C. engine unit for further heating before entering the hot-air engine unit. In a modification the hot-air engine unit is placed between the other two units and the inner rotors are independent and rotate at different speeds. Specification 6168/03, 8949/07, 25247/09, [all in Class 110], and 583,035 are referred to.
Patent GB-766254-A (GB)
Title: "improvements in inflatable floats or buoys"
IPC: A01K75/04
Filed: 1952-10-23
Abstract: 766,254. Fishing-net floats. BURNETT & JACKSON, Ltd. Jan. 22, 1954 [Oct. 23, 1952], No. 26614/52. Class 48. [Also in Group XXI] An inflatable net float consists of a bag 1 formed of a number of panels of plastics or plastics-proofed material secured together and sealed at the joints by the application of heat and pressure tc the panels at or in the vicinity of the joints and a base 9 to which the bag is secured and sealed. The edges of the panels are batted, or overlapped, and/ for covered by plastics or plastics-proofed strips. The panels may be stitched together before sealing occurs. The fabricated bag 1 is secured to the base 9 by a cementing or sealing process, or by a binding or a clip, or by a combination thereof. Sealing liquid may be introduced into the bag, which may be formed of a highly polished, brightly coloured plastics material. Specification 345,478 is referred to.
Patent GB-1499829-A (GB)
Title: Sheet-metal forming
IPC: B21D26/02
Filed: 1975-06-11
Abstract: 1499829 Jet-forming; shearing; making radiator panels BRITISH LEYLAND UK Ltd 11 June 1975 [15 June 1974] 26636/74 Headings B3A B3Q and B3W Ductile sheet metal is shaped and formed with apertures against a die by at least one fluid jet The apertures may be formed by shearing against edges on the die, or lines of weakness may be provided before the sheet is formed against the die. A single jet of oil, steam or water containing a long-chain polymer additive may be used if the point and/or angle of impingement is varied. As applied to forming louvred radiator grills, Fig. 2 (not shown), against a rotary disc 5 by nozzles 11, copper strip 1 is impressed with lines of weakness between rollers 2, 3 upstream of the die. At the die the lines of weakness rupture over countersunk slots in the die and the louvres are formed as the metal shears on the louvre features of the die. Water passes into the drum-die and drains into a pump 10 for re-circulation. The edges of the strip are dimpled between rollers 6, 7.