baber/WOPTO huggingface dataset:
Patent GB-1141970-A (GB)
Title: Improvements in or relating to internal bore welding
Inventor: ROPER ROLAND MAITLAND
IPC: B23K9/028
Filed: 1966-05-12
Abstract: 1,141,970. Welding by fusion. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 10 May, 1967 [12 May, 1966(2)], Nos. 21100/66 and 21209/66. Heading B3R. Internal bore welding apparatus comprises a rotatable electrode 25 depending from a supporting structure 1 which is provided with a retractable guide member 63 adapted to centralize the apparatus by engaging a tapered portion of the guide member with the rim of the bore. A stationary ceramic tube 45 encloses the rotatable stem portion of the electrode holder; the tube 45 is resiliently mounted by means of an 0-ring 51, passes with clearance through the guide member 63 and carries a collar 47 adapted to engage the wall of the bore adjacent to the weld in order further to centralize the electrode. Internal passages in the depending stem of the electrode holder provide for flow and return of coolant while arc shielding gas flows through the annular passage between the holder and the ceramic tube 45 to a port 46. A motor 10 provides rotary drive for the electrode and an adjusting screw 14 provides for adjustment of the height at which welding takes place. Current is supplied through a carbon brush 40. Clamping means 7 are adapted to engage an adjacent bore to clamp the whole apparatus in position.
Patent GB-1523506-A (GB)
Title: Method and apparatus for moulding expanded plastics materiial articles
IPC: B29C44/58
Filed: 1976-05-21
Abstract: 1523506 Moulding foamed articles SELENE TRUST 21 May 1976 [21 May 1975 16 Jan 1976] 21144/76 Heading B5A A method of moulding foamed articles, e.g. from polystyrene beads comprises moulding a preform in a heated mould, allowing it to expand further outside of the mould and then placing it into a cooled mould to shape the preform to the article required. One mould or a pair of moulds may be used to form the article. In Figs. 1, 3 polystyrene beads 3 are moulded to a preform in a heated mould-one half 5 only being shown, the preform is withdrawn and allowed to expand freely on the male half 5 by retracting the latter with a piston 10, the mould half 5 is then pivoted on a shaft 9 so that it is aligned with and can introduce the preform into the female half 7 of a cooled mould. The mould half 5 is then retracted and the male mould half 6 of the cooled mould is introduced into the preform by a piston 14 to shape the preform to the final article. The shaft 9 is rotated by a piston 19 via a cam plate 18 acting on a rod 23 attached to the shaft 9 through a housing 11. The article may be ejected from the cooled mould by a rod (55, Fig. 5, not shown) or pneumatically (e.g. using a nozzle 56, Fig. 5). The heated mould may be kept at a temperature of 90-130 C. and steam may be passed through the foamable material in the mould. The preform may be moulded under vacuum in the cold mould. The preform may be also transferred from the hot mould to the cold mould pneumatically or on a conveyer belt.
Patent GB-174097-A (GB)
Title: Method and apparatus for feeding molten glass
IPC: C03B7/02
Filed: 1920-07-13
Abstract: 174,097. Howard Automatic Glass Feeder Co., and Howard, G. E. July 13, 1920. Delivering molten metal.- Relates to the deliverv of uniform charges of molten glass from a tank furnace, and consists in forming a gob or drop of glass by gravity flow through an outlet, accelerating this flow during the formation of the gob. then retarding the flow and severing the suspended gather from the parent body of metal. The molten glass flows from the tank 1, Fig. 3, through a submerged opening 13, over a weir 18 to a space 19 where the stream is divided 'by a block 45 and flows in separate channels to the discharge hole 26. It is forced through this in drops 80, Fig. 11, by a hollow reciprocating plunger 51. The downward movement of the plunger forces the metal through the hole 26, but on the upward movement the flow is retarded and the stream is cut off into a charge by shears 79. The rate of flow through the hole 13 is kept constant and independent of the varying level in the melting-tank 1 by means of a valve 14 which is operated through levers &c. from a pivoted float 4. After a charge is cut off from the stream, it passes along a trough or deflector D, Fig. 11, which is so placed that the charge is hanging freely at the time of severance, but if the glass becomes hotter and tends to stretch unduly, the trough supports the charge and prevents it from stringing out. Specification 174,311 is referred to. Reference has been directed by the Comptroller to Specifications 113,665. 118,581, 129,822, 142,785, 142,786, and 143,159.
Patent GB-149268-A (GB)
Title: Improvements in the electric propulsion of ships
IPC: B63H23/24
Filed: 1920-07-13
Abstract: 149,268. Coninck, M. R. de. July 15, 1919, [Convention date]. Dynamos and motors combined for transmitting power. -A ship propulsion system comprises one or more sets of asynchronous generators and one or more synchronous motors the speed of which is varied progressively by adjusting the direct current excitation of the motors, each phase of which is provided with two windings adapted to be connected in parallel for high speeds and in series for low speeds. The generators are six-phase and have high rotor resistances at low speeds; and their pole numbers are varied by charging the connexions to the motors. The motors are run up to synchronize with a. reduced frequency of the generators by means of a commutating rheostat, and are braked by means of braking resistances. A six-phase generator G, Fig. 1, is connected to a three - phase synchronous motor by means of switches I<1>, I<2>, I<3> adapted to vary the number of poles of the generator and the divided windings m<1>, m<1>1; m<2>, m<1>2; m<3>, m<1>3 of each phase of the motor. The motor is synchronized with a reduced speed of the generator by means of a commutating resistance R connected to the motor through a switch d<11> and driven by a motor. Reversing switches V<1>, V<2> are provided. In the modification shown in Fig. 2 a generator G with six, four or two poles is employed and the motor is provided with two windings adapted to be connected in parallel for full and two-thirds full speed and in series for onethird full speed. The motors are braked through resistances F. The number of poles of the goenerator is varied by means of switches A, B and C which are shown for one phase only.
Patent GB-477424-A (GB)
Title: Improvements in objectives
IPC: G02B13/00
Filed: 1936-07-31
Abstract: 477,424. Lenses. WARMISHAM, A., and KAPELLA, Ltd. July 31, 1936, No. 21178. [Class 97 (i)] An objective for photographic and like purposes comprises two convergent components in front of, and a third convergent component behind an asymmetrical double concave component in which the radius of curvature of the shallow side is at least ten times that of the other. Every component is a simple lens and the mean refractive index of the divergent component is substantially greater than 1À65. Preferably, the glass of the rear convergent component has a mean refractive index greater than 1À62 and an AbbÚ number less than 50. Specification 408,787 is referred to.
Patent GB-614918-A (GB)
Title: Improvements in and relating to electric control systems
IPC: H02P7/34
Filed: 1945-08-20
Abstract: 614,918. Automatic control systems. BRITISH THOMSON-HOUSTON CO., Ltd., Aug. 20, 1945, No. 21247. Convention date, Aug. 19, 1944. [Class 38 (iv)] [Also in Group XXXVII] Voltage, current, torque control.-Fig. 1 shows a system wherein the field 1b of a motor 1 is energized from an exciter 7 while the armature 1c is connected by resistance 16 to a generator 2 whose field 2b is supplied by an armature reaction excited machine 8 whose control field 8c is supplied from a potentiometer 10 across the generator 2. A potentiometer network 11, 12, 17, 18 supplies adjustable steady voltages through rectifiers 19, 20 to the armature 1a and through switches 9c, 9b to the voltage dividing potentiometer 10 at 10b. Starting forward.-Switch 9a is opened and switch 9b is closed to energize control field 8c in direction 23 so that machine 8 applies an amplified voltage to the field 2b to build up voltages across potentiometer 10 and resistance 16. The excitation of the control field 8c is stabilized when the voltage from potentiometer 11 less that from potentiometer 10 is equal to the voltage drop across resistance 16 less the voltage from potentiometer 17, through rectifier 19, whereby the generator 2 has its voltage determined by potentiometer 11, and because of rectifier 19 its maximum armature current is determined by potentiometer 17. Stopping.-On opening switch 9b and closing switch 9a, the control field 8c is energized in the reverse direction and the motor regenerates, so that the generator voltage rapidly decays. Regeneration current is limited to a safe value when the sum of the voltage drops across resistance 16 and the control field 8c exceeds the voltage from potentiometer 18 sufficiently to excite the control field 8c in the original direction over rectifier 20. The level at which this occurs can be adjusted by moving contact 10e to position 10c. Forward-reverse switching.-Between opening switch 19b and closing switch 9c, switch 9a is momentarily closed, causing initial deceleration, and on closure of switch 9c the generator voltage is still in the original direction, and the sum of the voltages from potentiometer 10 and 12 energize the control field 8c in the reverse direction, so that deceleration proceeds as in switching off, and reverse acceleration as in the forward direction, the voltage drop across resistance 16 having reverse polarity and beirig compared with the voltage from potentiometer 18 through rectifier 20. In a modification (Fig. 2, not shown), to avoid current peaks, the central winding is connected to the end of voltage dividing potentiometer through a variable resistance and to an intermediate tap thereon through alternative paths including oppositely poled rectifiers and additional forward and reverse switch contacts.
Patent GB-830136-A (GB)
Title: Furnaces or kilns
Inventor: COCKERILL WILFRED HENRY
IPC: F27B17/00
Filed: 1955-07-25
Abstract: 830,136. Metal-heating furnaces. CASTINGS Ltd. April 17, 1956 [July 25, 1955], No. 21412/55. Classes 51 (1) and 51 (2). A batch-type annealing furnace comprises an oil or gas burner 7 mounted centrally towards the bottom of the back wall, a refractory tube 10 disposed in the treatment chamber 5 coaxially of and spaced from said burner, and rows of ports 12 in the floor below charge stacks 11 feeding a pair of waste gas flues. Some of the waste gases are re-circulated through the gap between the burner and the tube, the latter serving also to shield the charge from impingement with or radiation from the flame. Each tube 10 may be divided into separate coaxial sections, Fig. 5 (not shown), may be shaped to give a venturi effect, Fig. 4 (not shown), or may comprise coaxial sections of increasing diameter, Fig. 6 (not shown). A modified furnace, Fig. 3 (not shown), has two burners disposed in the end wall close to the side walls, with a central row of waste gas ports serving a single flue in the floor.
Patent GB-966733-A (GB)
Title: Improved method of glass treatment and product
IPC: C03C15/00
Filed: 1962-06-04
Abstract: To improve the physical and chemical properties of glass, an alkali metal ion within a surface layer of a glass article is exchanged with a larger monovalent ion from an external source at an elevated temperature below the glass strain point, the glass article being formed from an alkali-alumino silicate glass composed essentially of an alkali metal oxide, at least 5% by weight Al2O3, silica, and 0.20% by weight of other compatible glass producing ingredients.  A number of examples of compositions are given.  The preferred ion exchanges given are sodium-potassium and sodium silver. Specifications 454,448, 786,951, 917,388, 966,731 and 966,734 are referred to.
Patent GB-238714-A (GB)
Title: Improvements in steering wheels for motor vehicles
IPC: B62D1/08
Filed: 1924-09-11
Abstract: 238,714. Greenland, A. E., and Baker, 3B. D. Sept. 11, 1924. Hand-wheels.-The tubular rim 1 of a motorvehicle steering-wheel is partly embraced by the end 3 of each spoke 2 and is secured thereto by a screw 5 engaging a loose metal nut. 8 cut from :rod of semi-circular or oval cross-section to conform to the curvature of the tube. The hole 4 in the spoke 2 and the faces 9 of the nut are countersunk, in order to guide the screw and prevent the nut from fouling the frequentlyburred edge of the hole in the rim.
Patent GB-967811-A (GB)
Title: Scintillation meter components
IPC: G01T1/20
Filed: 1960-06-20
Abstract: A shock resistant scintillation meter component comprises a luminophore 1, a photomultiplier tube 2 having conductive leads 10 sealed through the glass envelope thereof, the envelope being rigidly optically coupled by epoxy resin 8 to the luminophore, an aluminium housing 4 surrounding the luminophore 1 and tube 2, reflective powdered aluminium oxide or magnesium oxide 7 between the luminophore 1 and the housing 4 and between the tube 2 and the housing, cushioning means 9 between the housing 4 and the tube 2, and an electrical contact carrying base 3 out of contact with the tube 2 and rigidly coupled to the housing 4 by cement 12.  A sponge rubber disc 5 and a polyethylene disc 6 are positioned between the housing 4 and the luminophore 1.  The cushioning means 9 can comprise flexible rubber <PICT:0967811/C4-C5/1> seal potting material.  The luminophore 1 can be a solid solution of a fluorescent organic compound in a polymeric resin or can be a scintillation crystal such as thallium activated sodium iodide.
Patent GB-1441270-A (GB)
Title: Containers
IPC: B65D55/02
Filed: 1973-05-07
Abstract: 1441270 Tamper-proof closure BOWATER PACKAGING Ltd 20 Aug 1973 [7 May 1973] 21582/73 Heading B8T A container 5 and closure 1 twist fit together by engaging parts of screw threads 6 and 4 which form external and internal lugs respectively on the container 5 and closure 1. The container has a radially extending tab 7 integrally hinged to the container along a weakening line B-B. The closure is push fitted on to the container so folding the tab down against the container wall, then twisted so that lug 4 rides over the tab 7, which is wedge shaped in section Fig. 3 (not shown), until the lug 4 fully engages the lug 6 and simultaneously disengages the tab 7. Subsequent removal of the closure requires the tab 7 to be torn off of the container, along the line of weakness B-B so providing a tamper-proof closure.
Patent GB-226583-A (GB)
Title: Improved indicating device for the pressure springs used in connection with the rollers of spinning and like machines
IPC: D01H5/50
Filed: 1923-08-27
Abstract: 226,583. Fouracre, W. J., and Fouracre, A. Aug. 27, 1923. Rollers and roller heads.-Pressure-regulating devices for the delivery rollers of a spinning- machine of the type in which a pressure hook is arranged to engage with the axle of the upper roller and is adapted to slide over the screwed end of another hook under the action of a compression spring and thereby to force the rollers into contact, are provided with an indicating device which comprises two coacting members mounted to slide over the screwed part of the hook upon which the spring is mounted, and so arranged that, as the spring is compressed by the adjusting nut, one member moves relatively to the other to indicate the amount of compression. In one arrangement, a bent arm 6 having graduations a, Figs. 1 and 6, is mounted on the screwed end of the hook 5, and the amount of compression of the spring 2 is indicated by the position of an arm 8 on the arm 6. In a modification, the members 6, 8 are replaced by a hollow sleeve 6a and a graduated bush 8<a>, Fig. 8.
Patent GB-517183-A (GB)
Title: Improvements in or relating to autographic registers and like recording machines
IPC: B41L5/06
Filed: 1938-07-21
Abstract: 517,183. Memorandum appliances. STANDARD REGISTER CO. July 21, 1938, No.. 21712. Convention date, July 26, 1937. [Class 16] In an autographic register or the like in which one or more continuous strips of record material are fed step by step past a writing position by feeding means engaging the record materials and in which the strips are ejected from the machine step by step as they are fed, the feeding means is actuated by spring-urged mechanism in combination with means for loading the spring to cause it to actuate the feeding means operable by a simple manual movement such as the pulling of a lever or the depression of a push-button. In the portable register shown, the feeding means comprises two relatively spaced interconnected pin wheels 9 secured to a shaft 16 journalled in walls 10 spaced from the sides of the register. Mounted on one wall 10 is a gear-wheel 12 meshing with an idler pinion 13 which in turn meshes wth a driven gear-wheel 14 upon the pin wheel shaft 16. A disc 18 mounted concentrically with 'the gear 12 has mounted thereon a spring- controlled pawl 19 having engagement with ratchet teeth 17 formed on the hub of the gear 12, and a hand lever 22 is attached to the disc 18 for oscillation thereof. A tension spring 20 is connected at one end to the disc 18 and at the other end to a stud on the related wall 10. The pin wheels 9 are arrested at the end of each revolution which corresponds to the feeding of a full form length of record material by engagement of a detent lever 23 with a stop shoulder' 24 of a disc 25 secured to the pin wheel shaft 16, and a stud 26 on the. disc 18 is adapted to engage the. arm of the detent 23 to oscillate the latter away from the shoulder 24 prior to rotation of the shaft 16. In operation, the lever 22 is moved to 'the right to oscillate the disc 18 against the tension of the spring 20, the pawl 19 moving with the disc to engage the next ratchet tooth 17, and the stud 26 moving the detent 23 from the shoulder 24. The lever 22 is then released, the spring 20 propels the disc 18 and lever to the left, the pawl 19 partially rotates the gear 12 which in turn rotates the gear 14 on the shaft 16 on which the pin wheels 9 are secured. , The pin wheels are given one complete revolution and then arrested by the detent 23. In a modification, the lever 22 is coupled to the disc 18 through a pawl mounted on the lever engaging a notch in the disc, the pawl being tripped to release the disc when the lever has been moved to load the spring'20. This modification may be further modified by making the lever 22 shorter to lie within the register casing, and providing a push-button rod on the end of the lever which is simply depressed to load the spring 20. In a further 'modification, the disc 18 has a gear-wheel affixed therto, with which meshes a reciprooatory rack bar having a stem extending above the register casing and carrying a push-button.
Patent GB-441860-A (GB)
Title: An adjustable case for toilet or other articles
IPC: A45C13/02
Filed: 1934-07-25
Abstract: 441,860. Cans for toilet or other articles. TOMKIN, G. J. R., 49, Ennismore Gardens, Kensington, London. July 25, 1934, No. 21738. [Class 18] A case for toilet articles, food, bottles of liquid refreshment, samples, specimens, &c. comprises a rigid container such as 1 with removable partitions 8 sliding in grooves 7, the front wall being lower than the back wall 4 and the container having a closely fitting flexible outer cover 2 of leather &c. with fastenings 10 which is adapted to enclose the container completely. This container may conveniently be packed in a suitcase. The base and walls of the container 1 may be lined with moulded rigid plastic material, e.g. synthetic resin ; the liner may also be stamped into grooved form from a thin sheet or may be formed corrugated by extrusion through a suitable orifice. The cover 2 may be lined with waterproof fabric or oilskin 14 and the case may have a handle 13.
Patent GB-322545-A (GB)
Title: Damp-proof matches
IPC: C06F3/00
Filed: 1928-10-05
Abstract: 322,545. Smith, W. J., and Perry, A. T. H. Oct. 5,1928. Matches.-Matches are made damp-proof by combining with the fulminating paste celluloid and amyl acetate in place of the usual gum or other binder. The stems may be dipped in a solution of celluloid in amyl acetate before the fulminating paste is applied, and after the fulminating paste has been applied, the match head and the whole or a part of the splint may be coated with the same celluloid solution. Two examples of fulminating paste compositions are given. (1) Common phosphorus, 9 parts. Manganese dioxide, 14 parts. Nitre, 14 parts. Amyl acetate and celluloid, 16 parts. (2) Potassium chlorate, 6 parts. Antimony sulphide, 3 parts. Amyl acetate and celluloid, 2 parts. Specification 18028/15 is referred to.
Patent GB-468015-A (GB)
Title: Improvements in and relating to cartons, cake boxes and the like
IPC: B65D5/36
Filed: 1936-08-07
Abstract: 468,015. Cartons &c. PADWA, P. Aug. 7, 1936, No. 21850. [Class 18] A carton, cake-box, &c. of the kind which is made from a flexible blank, and which can be collapsed without disjointing, has the side walls 5 provided with extensions 6, Fig. 1A, carrying projections 7, 9 which enter slits 8, 10 to hold the box in assembled position. In alternative form the rear of the box has the configuration previously described while the front of the box has the configuration shown in Figs. 1 and 2. Similar constructions may also be applied to the lid.
Patent GB-639059-A (GB)
Title: Frequency converter
IPC: H01F38/04
Filed: 1947-08-08
Abstract: 639,059. Frequency changing; transformers. AUTOMATIC ELECTRIC LABORATORIES, Inc. Aug. 8, 1947, No. 22007. Convention date, Aug. 15, 1946. [Class 38 (ii)] A frequency changer has a ferromagnetic core carrying a primary winding and a resonant secondary winding through both of which windings two legs of the core pass, the arrangement being such that the magnetic fluxes in the two legs link the primary winding in the same sense, but link the secondary winding in opposite senses and vice versa, the two legs being of materials of different permeabilities. The core comprises two crossed laminated legs, one, SI, of silicon iron, the other, AL, of a nickel iron material and the primary winding 1 is wound through diagonally opposite openings, the secondary winding 2 being wound through the other diagonally disposed openings. Additional windings 1a, 1b are provided to ensure that the knee of the magnetization curve for the silicon iron is raised to correspond with that for the allegheuy electric metal. The same effect can be obtained without additional windings, but making the allegheny electric metal leg to have a smaller cross-section than the silicon iron leg. Thus there is practically no mutual induction between the two windings below the knee of the curves, transference of electrical energy only taking place when the legs are working above the knee of the magnetization curves, the frequency of the output circuit being determined by the resonant frequency of the secondary circuit, i.e. by the value of the condenser 5. In order to render the apparatus self-starting, a thermionic valve is provided which supplies an initial rectified current pulse to saturate the core after which the circuit is self maintaining under normal conditions and the valve is then biassed back beyond cut-off. If, however, the apparatus becomes overloaded, the valve is arranged to supply rectified current pulses every half-cycle until the overload is removed. Alternatively, an electromagnetic relay may be used instead of the valve. Specification 599,880 is referred to.