baber/WOPTO huggingface dataset:
Patent GB-591706-A (GB)
Title: Improvements in or relating to tuning arrangements for radio receivers
IPC: H03J1/06
Filed: 1945-05-10
Abstract: 591,706. Receiver tuning devices. COLE, Ltd., E. K., SHARP, ,L. W. D., and HUNT, H. May 10, 1945, No. 11673, [Class 40 (v)] A tuning arrangement for. a radio receiver comprises a permeability tuned coil which is connected in circuit with one of a plurality of fixed inductances to provide band spreading on short . waves, and a separate inductance coil tuned by a variable condenser for long and medium waves, the tuned coil and variable condenser both being controlled by one knob. In Fig.' 3 rotation of shaft 20 by a knob (not shown) rotates shaft 24 through a gearing and moving band arrangement, thereby rotating cam 25. A' moveable plunger 26 is urged against cam 25 by spring 27. Ganged condensers C10, C11 are mounted on shaft 24, and cores 29 and 30 of coils L3 and L12 are fixed to plunger 26 by plate 28. The coil L12 is constructed of fine wire widely spaced on a former whose diameter is much greater than that of its core, thus providing substantially linear inductance variation with displacement of the core, and tracking can then be effected without the use of padding' arrangements. Fig 1 shows 'a receiver tuning circuit utilising the invention.. On the long wave range, coils L2 in the preselector stage, and L10 in the oscillator stage are tuned by two ganged condensers C10 and C11. For the medium wave range coils L1 and L 11 are used in place of coils L2 and L10. On the short wave ranges, the permeability tuned coils L3 and L12 are utilised, the condensers C10 and C11 being disconnected. The selection of tuning elements is carried out by a rotary switch B, which also enables one each of the coils L4 to L8 and L13 to L17 to be placed in parallel with the coils L3 and L12 respectively, to provide a plurality of short wave bands. The final position of switch B allows the push button switch PB1 to 5 to be used to select one of five pre-determined stations in the long and medium wave ranges, by connecting one of the preset condensers C5 to C9 in the preselector stage and one of the preset coils L18 to L22 in the oscillator stage. The Provisional Specification states that the fixed reactances used on the short wave bands may be chosen so that the indicating scales may all be of the same length and cover approximately the same number of kilocycles.
Patent GB-493688-A (GB)
Title: Improvements in or relating to steel floors or platforms
IPC: E04C3/04
Filed: 1938-04-19
Abstract: 493,688. Grating - floors. STANIFORTH, A. V. April 19, 1938, No. 11731. Addition to 463,517. [Classes 20 (ii) and 107] The steel floor or platform according to the parent Specification is modified by substituting the T-section bars thereof by bars of other sections, or by arranging the bearer or spacer members to project above the treads of the bars which, in this construction, are of T-section. In the form shown, the bar is substantially of T-section and is provided, on its tread surface, with longitudinal grooves and, at its base with a thickened portion 1. According to modification bars of I-, L- and U-section are employed. In the modification in which the bars are of T-section as described in the parent Specification, the upwardly projecting bearer members are flat or are of angle-section.
Patent GB-550274-A (GB)
Title: A new and improved method of packing safety razor blades
IPC: B65D81/00
Filed: 1941-09-12
Abstract: 550,274. Packing. FREEMAN, J. W. Sept. 12, 1941, No. 11731. [Class 94 (i)] A method of packing razor blades consists in placing iodine on each side of a blade, placing iodised adhesive tape around the blade to keep the iodine in place, and then wrapping-up the blade in iodised paper.
Patent GB-1000631-A (GB)
Title: Improvements to mixer units
Inventor: DEWHURST RICHARD HENRY BALLANS
IPC: B01F15/06
Filed: 1962-03-28
Abstract: 1,000,631. Tar-heating cauldrons. MUNICIPAL APPLIANCES CO. Ltd. Jan. 29, 1963 [March 28, 1962], No. 11776/62. Heading EIT [Also in Division B1] In a tar melting and mixing unit, combustion products from burners 14a<SP>1</SP> are directed into the space 16 between a tank 11 and jacket 12 through a conduit 17. Longitudinal baffles 15 extending across the space 16, but stopping short of the ends of the jacket 12 cause the gases to flow from end to end of the space 16. Air is supplied to the burners 14a<SP>1</SP> by means of induction fans 14a<SP>11</SP>.
Patent GB-995271-A (GB)
Title: Polymerisable unsaturated polyester/polyether compositions
Inventor: WOODBURY NORMAN HOPTON
IPC: C08F283/01
Filed: 1961-03-30
Abstract: A composition comprises an unsaturated polyester resin and a partial ester of a polyhydroxylic compound containing at least two b ,g -unsaturated ether groups/mol. with a polycarboxylic acid or anhydride, dissolved in an aqueous mixture of a water-miscible organic liquid and a base.  The polyester resin may be derived from fumaric acid or maleic anhydride, phthalic or isophthalic anhydride and propylene glycol and the partial ester may be a maleic or phthalic partial ester of an allylated polyglycerol. The organic liquid may be isopropyl or tert. butyl alcohol or ethylene glycol monobutyl ether.  The base may be an alkyl or alkanolamine, e.g. N-methyl morpholine.  The composition may also contain a water-soluble salt of a drier metal, e.g. cobalt nitrate or vanadyl chloride, an inhibitor, e.g. a terpene or oxime, and a pigment, e.g. titanium dioxide. Specification 989,001 is referred to.ALSO:A glass panel and a primed wooden panel are brushed with a composition comprising an unsaturated polyester resin and a partial ester of a polyhydroxylic compound containing at least two b ,g -unsaturated ether groups/mol. with a polycarboxylic acid or anhydride, dissolved in an aqueous mixture of a water miscible organic liquid and a base. The composition may contain 10-20% of a pigment, e.g. TiO2. Specification 989,001 is referred to.
Patent GB-1426247-A (GB)
Title: Heating indicating device for an electric motor
IPC: H02H6/00
Filed: 1973-03-12
Abstract: 1426247 Protective systems COMPAGNIE HONEYWELL BULL 12 March 1973 [13 March 1972] 11841/73 Heading H2K [Also in Division G1] A heating indicating device for the rotor of an electric motor M comprises a resistor RM connected in series with said rotor, a device P fed with the voltage across the resistor and supplying an output voltage corresponding to the square of its input voltage, an RC network receiving the output voltage and varying it with time in accordance with the network time constant which is equal to the thermal exchange time constant between the rotor and its environment, means producing a reference voltage representative of the maximum allowable temperature for the rotor and comparator means 9 receiving the voltage from the network and the reference voltage. The comparator can start up or stop a fan, limit motor performance or activate an alarm device according to the results of the comparison
Patent GB-201242-A (GB)
Title: Improvements in and relating to hydraulic lifting & lowering apparatus
IPC: B66F7/20
Filed: 1922-04-27
Abstract: 201,242. Hamilton, J. E., and Stevenson, E. P. April 27, 1922. Revolving - cylinder pumps ; crank - actuated pumps; eccentric-actuated pumps; valves and valve seats, arrangement of.-Lifting-apparatus, particularly applicable to the platforms of luggage trucks, comprises a multiple-delivery rotary pump, which supplies fluid to lifting rams and is reversed to lower the rams and return the fluid to the supply tanks. The pump cylinders 4 are formed in a block 3 revolvably mounted on the stationary shaft 12 and the plungers 5 are connected by links 6 to crank-pins or eccentrics 7 carried by pinions 8 running on a stationary spur-wheel 9. The pinions 8 are carried by a driven spider 10 revolvably mounted on the shaft 12. As shown in Fig. 7, the shaft 12 is formed with a central supply passage 15 communicating with radial ports 14, and with intermediate discharge ports 16 communicating with longitudinal discharge passages 17. The number of inlet and discharge passages correspond to the number of rams &c. to be supplied and on one direction of revolution of the pump the rams are raised and on the other direction of revolution the rams are lowered.
Patent GB-557123-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B13/18
Filed: 1942-08-25
Abstract: 557,123. Optical objectives. TAYLOR, TAYLOR & HOBSON, Ltd., and WARMISHAM, A. Aug. 25, 1942, Nos. 11960/42 and 13180/43. [Class 97 (i)] An objective comprising two parts arranged approximately holosymmetrically, each consisting of refracting elements, and each individually connected for astigmatism with respect to the stop position, has an afocal correcting surface R6 substantially at the stop position for correction of spherical aberration. The parts may be equal halves of the objective, may each consist of a convergent component and a divergent component, and both components may be meniscus with concave surfaces towards the stop position. The surface R6 may be paraxially afocal, or afocal for a selected zone with a slight curvature at its axial point. Data are set out for nine examples, one comprising compound divergent inner components, with simple convergent outer components, and the others comprising simple components only. In some examples crystalline alkaline halides or crystalline alums are used for some or all of the elements. Specification 548,384 is referred to.
Patent GB-709002-A (GB)
Title: Improvements relating to fuel systems for internal combustion engines
Inventor: PEARSON HARRY
IPC: F02C7/236
Filed: 1950-05-12
Abstract: 709,002. Centrifugal pumps; gas turbine plant. ROLLS-ROYCE, Ltd. May 8, 1951 [May 12, 1950]. No. 11973/50. Classes 110(1) and 110(3) [Also in Groups XI and XXVII] A fuel system for a gas turbine engine comprises a low-pressure fuelmetering device delivering fuel to the eye of the impeller of a centrifugal pump, and flow-restricting means connected with the delivery of the pump and having such flow characteristics that the maximum delivery is obtained with a radial depth of fuel in the impeller less than the radius of the impeller. A booster pump 20 supplies fuel from a tank 16 to a main pump 25 through, a nozzle 31 which directs the fuel against the surface of the impeller 25a within a central clear space 27. Pump 25 delivers the fuel to the fuel injection nozzles 19 of a gas turbine engine, and is driven through gearing from the engine shaft or by an electric motor or an air turbine. The rate of flow is controlled by a throttle 22, the inlet pressure of which is kept constant by a relief valve 23 which returns fuel to the tank 16 by way of a pipe 24. The pressure within the space 27 is kept substantially constant by venting the space to atmosphere through a pipe 33. Pump 20 and valve 23 may be eliminated, the pressure within the tank 16 being kept constant by supplying air under pressure to the top of the tank 16. The air is supplied by a blower, a blow-off valve keeping the pressure constant. Alternatively pump 20. valve 23 and throttle 22 may be replaced by a variabledisplacement pump of the kind in which the rotor carries radially disposed pistons which are reciprocated by engagement with the inner wall of a casing the eccentricity of which in relation to the rotor is controlled by a lever replacing Specification, the pump 25 may have more than the throttle lever. According to the Provisional one volute.
Patent GB-550732-A (GB)
Title: Improvements in and relating to electrothermic reduction of volatile metals
IPC: C22B5/16
Filed: 1941-09-19
Abstract: 550,732. Distilling metals; magnesium. KEEMLE, S. R. Sept. 19, 1941, No. 12154. Convention date, Sept. 23, 1940. [Class 82 (i)] [Also in Group XI] An electric furnace suitable for the production and distillation of magnesium and other volatile metals comprises a furnace chamber 1 with refractory lining 4 having three radiating electrodes 5 of graphite within water jackets 6. Each electrode is hollow and contains a screw conveyer 7 for injecting fine coke. A neutral electrode 8 is supported on a stem 9 which is non- rotatable but can be reciprocated to tamp the coke in the furnace. A casing 21 is surmounted by a casting 22 having passages for cooling water connected to pipes 24, 25 and ring pipes 26. Gearing 29 is provided to rotate or oscillate the casing 21. The upper end of the casing is surrounded by an ash column housing 30 surmounted by a water-cooled ring 31. The casing 21 and electrode 8 are reciprocated vertically by a hand or power operated lever 34. Three radial water-cooled conveyers 10 are spaced between the electrodes 5 and at a higher level, and inject a mixture of calcined dolomite and coke. Coke is also supplied through a hopper 14 and chamber 13 under control of a closure member 16. Magnesium vapour passes through passage 36 to a nozzle 39 in a condenser 40 containing petroleum tar. Petroleum tar is sprayed upward from a nozzle 41 to condense the magnesium and gases pass out through pipe 42 to a fractionating tower. In operation, lime is fed through conveyers 10 to form three piles, and fine coke is fed through the electrodes 5 to fill the intermediate spaces. Coarse coke is fed from the hopper 14 to cover the fine coke and lime. Carbon monoxide is injected at several points 43 to prevent burning of the coke, until a temperature of 1800‹C. has reached the spray 41, and is then replaced by hydrogen. A mixture of ore and coke is then fed through conveyers 10, and a mixture of carbon monoxide and magnesium vapour passes to the condenser. Magnesium is there condensed and coated with petroleum tar, which is drawn off from the pool and distilled. Tin or lead may be sprayed instead of petroleum tar, in which case an alloy is obtained. The furnace may be modified for single phase current by substituting a single electrode in the passage 18. An alternative three-phase furnace is described. Figs. 3 and 4 (not shown), in which the central electrode and conveyers 10 are omitted, and the mixture of ore and coke is fed by a conveyer within the opening 18. The lime is placed in position in three heaps between the electrodes before the furnace is assembled. Specifications 381,115, 431,537, and 448,536 are referred to.
Patent GB-909683-A (GB)
Title: Liquid product supply system
IPC: B67D7/22
Filed: 1959-04-10
Abstract: 909,683. Dispensing liquids. BRITISH PETROLEUM CO. Ltd., and PHILLIPS, R. M. May 11, 1960 [April 10, 1959], No. 12181/59. Class 116. A petrol-dispensing system comprises a meter 8, Fig. 1, actuating transmitters 12, 17, which transmit electrical pulses providing an indicative respectively of the volume delivered and of a value, e.g. price or weight, which is a function of the volume. A pump 1 delivers to a meter 8 which drives directly the " volume "  transmitter 12 and, through a variable gearing 10, 15, a " price " or " weight " transmitter 17. The transmitters 12, 17 are connected to contacts 19A, 19B associated with a selector switch 23, similar pairs of transmitters associated with different fuels being connected to other pairs of contacts 20A, 20B and 21A, 21B. Actuation of the selector knob 23 to select a particular fuel masks the identifying windows 25-27 of the fuels not being dispensed and connects the selected contacts to pulse counters 29, 31, which actuate the volume and price indicators 32, 33. A looking device associated with the selected dispensing nozzle 16 is freed by operation of the selector 23. Specifications 909,681 and 909,682 are referred to.
Patent GB-440866-A (GB)
Title: Improvements in cases for spectacles or the like
IPC: A45C11/04
Filed: 1935-04-23
Abstract: 440,866. Cases for spectacles or the like. EMARD, L. J. A., 3, Rue d'Orleans, Nantes, France. April 23, 1935, No. 12202. Convention date, Jan. 18. [Class 18] In a hinged case for spectacles or the like, a rib 3<1>, and a coacting groove 4, stamped in the peripheries of the lid 2, and body 1, or vice versa, form a dust-proof closure. Both rib and groove may be covered with a material such as rubber, cork, felt, plush, &c., or with the covering of the case. In a modification, Fig. 3, the groove may be fitted with a piece of flexible or resilient material 5, for example, rubber. The invention may be applied to other spectacle cases, such as those employing a fastening system.
Patent GB-984064-A (GB)
Title: Seepage-proof container
IPC: B65D3/00
Filed: 1963-03-28
Abstract: 984,064. Non-metallic tubes. ALUMINUM CO. OF AMERICA. March 28, 1963 [April 16, 1962], No. 12280/63. Heading F2P. [Also in Divisions B5 and B8] A tubular-walled container is formed of two layers 5, 6 of helically wound kraft paper, chipboard or cardboard adhered together and a lining formed by a laminate of helically wound paper 12 and metal foil 13, the lining being adhered to the layer 6 and sealed at its joint by a metal foil tape 11. The exposed face of the foil 13 has a coating of thermoplastic resin, e.g. vinyl resin and wax. The tape 11 is similarly coated on its exposed side, and, for joining it to the coated foil 13 has on its opposite side a coating of a plastics material heat-sealable at low temperature, e.g. a polyamide resin or plasticized vinyl copolymer. Metal end caps are secured to the container body wall.
Patent GB-1062724-A (GB)
Title: Improvements in screw threaded locking nuts
IPC: F16B39/36
Filed: 1965-03-23
Abstract: 1,062,724. Locking-nuts. R. K. E. GOTZ. March 23, 1965 [June 10, 1964; Sept. 23, 1964], No. 12294/65. Heading F2H.  A two-part lock-nut comprises an inner part 11 of truncated conical shape which has a head 17 and is screw-threaded and slit longitudinally at 20, there being provided opposite the slit a channel 21 of the depth of the threads, the outer part 12 of the nut being formed as a sleeve bored conically to fit half way on to the part 11. The nut is used on a bolt 13 for clamping together plates 14, 15. In a modification, the outside of the part 11 is knurled and the sleeve part has flats to engage a spanner.
Patent GB-405263-A (GB)
Title: Improvements in or relating to adhesives
IPC: C09J107/00
Filed: 1932-04-20
Abstract: A water-insoluble transparent or translucent normally tacky and pressure-sensitive adhesive comprises resin, for example rosin, synthetic resins such as Cumaron resin, or gum resins, rubber and a plasticizer such as liquid paraffin, the resin-rubber ratio lying between the limits 1 : 2 and 2 : 1.  A similar, but normally dry, solvent-activated adhesive contains resin and rubber in the proportions 1.4 to 6 parts resin to 1 part rubber, but no plasticizer, although hide glue, corn-starch or dextrin may be added Fillers such as zinc oxide, dyes and pigments may also be added.  The rubber component may be latex crepe, smoked sheet or reclaim and is preferably plasticized by milling before adding the resin.  The resin and rubber may be incorporated in a mixer and dissolved in a solvent such as benzol or the components may be separately dissolved and then mixed.  The glue &c. is added in aqueous solution to the rubber-resin solution in benzol to form an emulsion in which the rubber solution constitutes the continuous phase.  The adhesive may be applied in solution to backings of paper, especially Kraft paper, cardboard, or gelatinized cellulosic derivatives as described in Specification 405,247. The paper may be pretreated by impregnation with glue.  The adhesive paper may be made up into corrugated boards. Specification 312,610, [Class 95, Paints &c.], also is referred to.ALSO:A water-insoluble transparent or translucent normally tacky and pressure-sensitive adhesive comprises resin, for example rosin, synthetic resins such as cumaron resin, or gum resins, rubber and a plasticizer such as liquid paraffin, the resin-rubber ratio lying between the limits 1 : 2 and 2 : 1.  A similar, but normally dry, solvent-activated adhesive contains resin and rubber in the proportions 1-4 to 6 parts resin to 1 part rubber, but no plasticizer, although hide glue, corn-starch or dextrin may be added. Fillers such as zinc oxide, dyes and pigments may also be added.  The rubber component may be latex crepe, smoked sheet or reclaim and is preferably plasticized by milling before adding the resin.  The resin and rubber may be incorporated in a mixer and dissolved in a solvent such as benzol or the components may be separately dissolved and then mixed.  The glue &c. is added in aqueous solution to the rubber-resin solution in benzol to form an emulsion in which the rubber solution constitutes the continuous phase.  The adhesive may be applied in solution to backings of paper, especially Kraft paper, cardboard, or gelatinized cellulosic derivatives as described in Specification 405,247. The paper may be pretreated by impregnation with glue.  The adhesive paper may be made up into corrugated boards. Specification 312,610, [Class 70, Indiarubber &c.], also is referred to.
Patent GB-662086-A (GB)
Title: Improvements in machines for marking cylindrical articles
IPC: B41F17/18
Filed: 1949-05-09
Abstract: 662,086. Printing on curved surfaces. MARKEM MACHINE CO. May 9, 1949 [Feb. 5, 1949], No. 12342/49. Class 100 (ii). In a machine for marking the curved surfaces of cylindrical articles the article is fixed in a stationary chuck with its axis parallel to that of a rotary printing member which is given a planetary movement thereabout; for inking purposes this movement is preceded by rotation of the printing member with its axis stationary in association with ink supply means. As shown (Fig. 7 being a section on the line 7-7 of Fig. 2, front elevation) an article 2, e.g. a vacuum tube of a television set, is mounted in a chuck 1 fixed to a stationary shaft 3 projecting from an arm 4 of the machine frame 5; the rubber printing pad 11, on a member 10 extending from a hub 14 rotatable on a shaft 15, projects through an opening 86 in a hood 85 mounted on a part 90 rotatable about the shaft 3, a forked arm 91 engaging the hub 14 to maintain the opening 86 in register; the shaft 15 is mounted on a carriage 17 rotatable about the shaft 3 by a motor 29 through a one-revolution clutch 55 (see below), the pad 11 being maintained in rolling contact with the article 2 during such rotation by frictional engagement between collars 38 on the hub 14 and 87 on the shaft 3; the collar 87 is cut away to allow free rotation of the collar 38 by a collar 40 for inking of the pad 11 by an ink roll 23 continuously rotated in a reservoir 24 by the motor 29 through a shaft 28 having a rigid collar 41 coupled to the free collar 40 by a friction roll 44 on an arm 42 operated by a treadle through a link 45, collar 48, arm 46 and adjustable screw 52; after inking, a trip pin 81 on the collar 38 by contact with the upper end 80 of a trigger 77 releases an engaging device 76, 74, 64 for the clutch 55 preset by compression of a spring 82 when the treadle is depressed. The one-revolution clutch 55 comprises ' a member 56 rotated from the motor 29 and with radial grooves 62 in its face for engagement by a spring-loaded clutch pin 61 axially slidable in a member 57 geared to the carriage 17; the arm 64 enters a groove 67 in the member 57 and except, when withdrawn by the spring 82 engages a shoulder 70 on the pin 61 to hold the clutch disengaged; at the end of one revolution the inclined end 72 of the arm 64 withdraws the pin 61 from the member 56.