baber/WOPTO huggingface dataset:
Patent GB-624874-A (GB)
Title: Improvements in sound recording and reproducing machines
IPC: G11B25/00
Filed: 1946-09-11
Abstract: 624,874. Sound on film. KUHLICK, J. M. Sept. 11, 1946, No. 27267. [Class 40 (ii)] In an apparatus for recording and reproducing sound on film by means of a stylus, means are provided for fixing and adjusting the film support 12 relatively to a rigidly fixed transducer U. The support 12 consists of two a lower part 25 mounted on a shaft 26, and parts, an upper part 38 suspended about an axis 45 on the lower part 25. The lower part 25 is maintained in a fixed position against the tension of a spring 29, by means of a spring-loaded plunger 32 which locates itself in a recess 32<SP>11</SP> in a mounting plate 3 after the support 12 has been lowered and lifted when removing and replacing the film. The upper part 38 is adjustable relative to the lower part 25 and the transducer U by means of a knurled-headed screw 51, a leaf-spring 50 on the lower part 25 pressing on a pin 49 on the upper part 38 to hold the latter against the end of the said screw 51. The upper part 38 also has a spring- loaded flange 40 in order to provide for variations in the width of the film. The film is drawn over the upper part 38 of the support 12 from spool 5 to the spool 4, by means of a motor M and a worm and wheel gearing to a shaft 10 carrying a film feed wheel 11, against which the film is pressed by a roller 13 on a spring-loaded arm 14. The shaft 10 is coupled by a slipping belt 6<SP>1</SP> to the take-up spool shaft 6, while a similar belt 22<SP>1</SP> coupled to the shaft 7 engages a fixed pulley 22<SP>11</SP> so that the spool 5 is held back under suitable tension to prevent unrolling. The transducer U is adjustable laterally with regard to the film in order that the stylus may trace a path offset from the centre line of the film and a second track traced after the positions of the spools 4, 5 have been interchanged on the screwed shafts 6, 7.
Patent GB-723073-A (GB)
Title: Improvements relating to lever-actuated change-speed gearings, particularly for motor-cycles
IPC: F16H63/18
Filed: 1952-10-30
Abstract: 723,073. Change-speed gearing. TURNER, E., and TRIUMPH ENGINEERING CO., Ltd. May 26, 1953 [Oct. 30, 1952], No. 27275/52. Class 80 (2). Gear control mechanism for motor cycles comprises a pivoted selector plate 11 which has cam slots 20, 21 engaged by projections 22 on gear forks 23 and which is turned one step up or down at a time by appropriate operation of a lever fast on a shaft 27 carrying a holder 28 for a pair of oppositely-acting spring-loaded plunger pawls 29, 30 co-acting with arcuately-arranged recesses 25 in the plate 11. The shaft 27 is at right-angles to the pivot 13 of the plate 11 and the slots 20, 21 lie between the pivot 13 and the curved end of the plate which has locating notches 14 ... 18 corresponding to the various gear positions and to neutral and co-operating with a spring detent 19. Shaft 27 is returned to mid-position after each gear change by a spring 31. The plunger pawls 29, 30, outward movement of which is limited by a circlip 35, may be parallel, as shown, or' inclined to each other.
Patent GB-1154934-A (GB)
Title: Improvements in or relating to the Surface Treatment of Silicon Carbide Crystals
Inventor: BRANDER ROBERT WILLIAM
IPC: C25F3/12
Filed: 1966-06-17
Abstract: 1,154,934. Electrolytic polishing and etching of silicon carbide crystals; gold alloys. GENERAL ELECTRIC & ENGLISH ELECTRIC COMPANIES Ltd. June 6, 1967 [June 17, 1966], No.27300/66. Headings C7A and C7B. A surface of a crystal of P-type SiC is anodically etched by placing the surface in a horizontal position in contact with an electrolyte consisting of a 0À1 N to 5N aqueous solution of HF wherein part, e.g. up to 50% by volume, of the water is optionally replaced by a weak acid such as acetic acid, and passing a current such that the current density at the crystal surface is 5 to 500 amps. /sq. dm. Electro-polishing may be effected with 1À5N to 4N aqueous HF with a current density of 20 to 350 amps. /sq. dm., the crystal potential relative to an adjacent measuring electrode being 4 to 10 volts. 10% by volume of glacial acetic acid may also be present. N-type SiC crystals may be electro-polished by introducing positive holes into the surface layer e.g. by injection from a forward-biased PN junction or by exposure to U. V. radiation. Delineation of a PN junction in a single crystal of SiC can be effected in an electrolyte suitable for polishing at a current density less than that at which polishing occurs e.g. less than 30 amps/sq. dm. resulting in a thin white or brown on whichever region is connected as anode. Leakage current across a PN junction may be reduced by removing weak points or surface damage adjacent the junction by connecting the P-region as anode, masking the contact to this region and any metal contacts on the N-region from the electrolyte and employing a current density above that which effects polishing. As shown a polythene vessel 1 having a screw-threaded neck 2 supports a threaded recessed polythene holder 3 for a SiC crystal 5 with the crystal surface horizontal and parallel to a noble metal e.g. gold cathode 7. A reference electrode 11 is provided by a gold wire sheathed except at its tip by a polythene tube. By this arrangement irregularities due to convection of the electrolyte are reduced. The viscosity of the electrolyte may be increased by the addition of a water-miscible inert viscous liquid such as glycerine, such addition lowering both current density limits defining the polishing range. The contact to the SiC crystal which contact is insulated from the etching electrolyte may be a pressure contact, an evaporated metal layer, silver paste or an electrolyte contact, or may be formed by a molybdenum disc bonded to the crystal by a gold alloy containing 5% by weight of tantalum or of each of tantalum and aluminium.
Patent GB-711761-A (GB)
Title: Improvements in and relating to electric lamps or similar devices
IPC: H01K1/18
Filed: 1952-10-30
Abstract: 711,761. Lamp-caps. BRITISH THOMSONHOUSTON CO., Ltd. Oct. 30, 1952, [Oct. 18, 1951.] No. 27309/52. Class 38(I). [Also in Group XI] Rigid, filament-supporting, leading-in wires 10 for electric lamps, more particularly of the high wattage type, are secured to hollow terminal posts or contact pins 3 by resilient split sleeve clips 20 which are contracted in order to be inserted within the cylindrical lower ends 4 of the terminal posts and, in expanding clamp the wires 10 firmly against the inner wall of their respective post, the ends 21 of the wires being bent to hook over the rim of the split-sleeve at the closed end of the post. Each sleeve 20 is preferably formed with a longitudinal indentation 23 in a position diametrically opposite the split 24 to accommodate the part of the wire 10 between the outer side of the sleeve 20 and the inner wall of the terminal post  3 , a notch 25 being provided at the bottom of the indentation to receive and locate the hook of the wire. In a modification, Fig. 5 (not shown) the parts of the sleeve at each side of the split are turned inwardly along the length of the sleeve to provide a seating for the wire 10. To facilitate the insertion of the split sleeves 20 into the terminal posts, the ends to be inserted first are slightly tapered or rounded at 22. A resilient metal such as phosphor bronze or spring steel is used in making the split sleeves.
Patent GB-1291721-A (GB)
Title: Improvements in nuclear reactors
Inventor: WEBB JOHN
IPC: G21C13/073
Filed: 1969-05-29
Abstract: 1291721 Radiation absorbing materials; nuclear reactor shielding UNITED KINGDOM ATOMIC ENERGY AUTHORITY 22 May 1970 [29 May 1969] 27375/69 Headings G6C and G6R A radiation shielding composition for filling the top closure shield plug of a fast nuclear reactor comprises by volume 59-61% iron shot, 29-31% iron dust, and 9À5-10À5% epoxy resin. The construction of the plug is as described in Specification 1,214,136.
Patent GB-695480-A (GB)
Title: Improvements in or relating to instruments for use in marking the timbers in roof construction
IPC: E04G21/18
Filed: 1950-11-10
Abstract: 695,480. Measuring angles. SWIRES, W. Nov. 5, 1951 [Nov. 10, 1950], No. 27563/50. Class 97 (iii). An instrument for marking-off the timbers for a roof, particularly a hip roof, comprises a U-shaped frame 32 having legs 33; 34, a basemember or fence 36 pivoted at 35 to the leg 34, a clamping-screw 39 slidable in an arcuate slot 40 in leg 33 releasably securing the opposite end of the base and a plurality of marking-off members 42-46 pivotally connected to the base member 36 and having curvilinear slots 48 in which work pins 49 on the frame 32. A further marking-off member 47 is pivoted to member 46 and provided with pin-and-slot connection to leg 34. In use the base 36 is pivoted until its position as road on a. scale 41 on leg 33 corresponds to the desired roof pitch and clamping- screw 39 tightened. Using the base 36 as a guiding edge along the length of the timber; the members 42-47, and right-angled extensions 45a, 50; 51 directly indicate the hip rafter plumb cut, jack rafter plumb cut, hip rafter top cut, jack rafter top out, purlin plumb cut, purlin lip cut, purlin top cut, hip rafter foot cut and jack rafter foot cut respectively.
Patent GB-735068-A (GB)
Title: Ceramic structural unit resistant to high temperatures and to variations in temperature
IPC: F23M5/00
Filed: 1952-11-03
Abstract: 735,068. Turbine blades. DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT VORM. ROESSLER. Nov. 3, 1952 [Nov. 3, 1951], No. 27629/52. Class 110 (3). [Also in Group XII] A ceramic heat-resistant turbine blade, has a plurality of narrow grooves 2 formed in one face or two opposite faces thereof, the depth of each groove being greater than its breadth and the grooves being so arranged that they do not intersect with grooves on the opposite face of the unit. The grooves have rounded ends 3 and may be wholly or partly filled with material which, compared with the material of the unit, has a smaller modulus of elasticity, a smaller coefficient of thermal expansion, a lower heat conductivity or a smaller coefficient of heat transfer.
Patent GB-490633-A (GB)
Title: Improvements in or relating to testing arrangements for three-phase electric energy meters
IPC: G01R11/48
Filed: 1937-10-11
Abstract: 490,633. Current, voltage, and phasedifference measurements testing meters. SIEMENS & HALSKE AKT.-GES. Oct. 11, 1937, No. 27639. Convention date, Oct. 10, 1936. [Class 37] Apparatus for testing the connections of three-phase two-wattmeter metering systems comprises measuring-apparatus for each phase current and line voltage, as well. as means for checking the direction of rotation of the fields produced. The direction of field rotation may be checked by measuring the symmetrical positive and negative phase sequence components of the currents and voltages. Means for measuring the star point voltage are also provided. Current measurements can be effected by a transformer connection to the current windings, and the voltage measure. ments can be effected in a similar manner. In one arrangement three ammeters, four voltmeters and two field direction indicators are located in a common casing with the necessary terminal connections. Fig. 2 shows an apparatus in which only two instruments A, B are employed, two mechanically coupled doublepole three-way switches 8, 9 making the various. test connections. Three-pole two-way switches 15 .. 17 are also mechanically coupled. Voltage terminals 1 .. 3 connect the meter windings R, S, T, through transformers 12, 13, the transformer 14 being in the earth connection O. Current terminals 4 . . . 7 connect the windings R, T through transformers 10, 11, the connection at T being 180‹ displaced. The transformers 10 .. 14 are all wound to produce about 4 volts for measurement purposes. A centre-tapped choke 18, 19, resistors 20 . . . . 27 and condensers 38 . . . 31 also are provided. In positions I and II of switches 8, 9 normal current and voltage measurements are effected, whilst in position III of the switches the instruments A, B are connected as shown in Figures 3 and 4 into the complex potentiometers formed by the above-mentioned resistors and condensers across the transformer windings 12, 13. With the connections shown, the instrument A measures the positive phase sequence component of voltage and B the negative. By changing the position of switch 15 . . 17 to that shown in Figure 2, these oppositely rotating components can be indicated in respect of the meter currents.
Patent GB-438629-A (GB)
Title: Improvements in or relating to apparatus for measuring or indicating the density of solid particles, such as smoke, in a gaseous medium
IPC: G01N21/53
Filed: 1934-09-26
Abstract: 438,629. Washing glass. ELLIOTT BROS. (LONDON), Ltd., Century Works, Lewisham, London, and PETTITT, L. W., 8, Hayes Road, Bromley, Kent. Sept. 26, 1934, No. 27645. [Class 138 (i)] [See also Groups XII and XX] Apparatus for measuring the opacity of smoke passing up a chimney comprises means for washing the surface of the glass protecting the sensitive parts of the apparatus from the smoke. Chambers 1, 2 containing respectively an electric lamp 9 and a selenium or photoelectric cell 19 are hinged to the sides of the chimney. The fronts of the casings are formed by frames 11<1>, 17<1> holding glass plates 13 and 16 and supporting frames 20, 21 which fit closely against sides of the chimney around holes 14, 15 therein. To keep the surfaces of the glasses 13, 16 clear, water is allowed to flow over them from slotted tubes 24 furnished with perforated inlet pipes 27, Fig. 4. Below the tubes 24 are arranged slips of sheet metal 30 pressed against the glass by springs 32<1>. The edges of the slips 30 have a comb-like structure, which may be made by attaching to them a strip of wire-gauze 31 from which some of the transverse strands have been removed.
Patent GB-971332-A (GB)
Title: Synthetic paper food packet
Inventor: HISCOCK EARLE FRANCIS
IPC: B65D81/00
Filed: 1960-10-01
Abstract: A paper for use in forming infusion bags and the like is formed from synthetic fibres selected from a group consisting of nylons, polyesters and/or polyolefines and fixed together e.g. by oven treatment or hot calendering.  The paper can be made on conventional machines.  Orientation of filaments may be obtained by blowing the fibres into a mixing chamber in which they are agitated by an air stream.  The fibres may be drawn on to the machine screen by air suction.  The paper is subjected to a washing operation or boil-off bath.  The fibres are of a material having a melting point of at least 400 DEG F.  Their diameters vary from 0.0003 inch-0.00025 inch and the paper thickness is between 0.0014 inch and 0.0025 inch. Specification 733,386 is referred to.
Patent GB-444820-A (GB)
Title: Manufacture of azo-dyestuffs containing chromium
IPC: C09B45/16
Filed: 1934-09-27
Abstract: Chromium compounds of azo dyes are made by treating with an agent yielding chromium azo dyes of the type: an o-aminophenol or o-aminonaphthol --> a 3-aryl-5-pyrazolone or a 1 : 3-diaryl-5-pyrazolone.  They dye wool in orange to bordeaux shades fast to washing, fulling and light.  In examples, chromium compounds of dyes from the following components are described: 4-chloro-2-aminophenol-6-sulphonic acid, 6-nitro-4-methyl-2-aminophenol, 1-amino-2-naphthol-4-sulphonic acid, 6-chloro-2-aminophenol, 4 - sulphonic acid, o - aminophenol, 4 - chloro- and 4 : 6 - dichloro - 2 - aminophenol, 6 - nitro - 2 - aminophenol - 4 - sulphonic acid, 4 - nitro - 2 - aminophenol - 6-sulphonic acid, 5 - nitro - 2 - aminophenol, 5- and 6 - nitro - 4 - chloro - 2 - aminophenol, 6 - chloro - 4-nitro - 2 - aminophenol, 4 : 6 - dinitro-2-aminophenol; 1-(2<1>-chloro-5<1>-sulphophenyl)-, 1-(2<1>-, 3<1>- and 4<1>-sulphophenyl)-, 1-(4<1>-methyl-2<1>-sulphophenyl)-, 1-(2<1>- or 4<1>-chlorophenyl)-, 1-(4<1>-chloro-2<1>-sulphophenyl)-, 1-(2<1> : 4<1>-dichloro-6<1>-sulphophenyl)-, 1-(3<1>-sulphaminophenyl)-, 1 - (4<1>-sulpho-a -naphthyl)-, 1-(2<1>-hydroxy-3<1>-carboxy-5-sulphophenyl)-, 1 - (2<1> - methyl - 5<1> - sulphophenyl)-, 1 - (2<1> : 4<1>-dimethyl-6<1>-sulphophenyl)-, 1-phenyl-, 1-(2<1>-bromophenyl)-, 1-(2<1>-methoxyphenyl)-, 1-(2<1>:5<1>-disulphophenyl)-, 1 - (4<1> - phenoxy - 3<1> - sulphophenyl)-, and 1 - (1<1> - sulpho - 2<1> - naphthyl) - 3 - phenyl - 5 - pyrazolone, 3-- phenyl - 5 - pyrazolone, 3 - (4<1> - chlorophenyl) - 3 - (4<1> - methoxyphenyl)-, 3-(a -naphthyl)- and 3-(4<1>-carboxyphenyl)-5-pyrazolone, 1-(2<1>-chloro-5<1>-sulphophenyl) -3-(4<11>-methylphenyl) - 5 - pyrazolone, 1 - (3<1> - sulphophenyl) - 3 - (b  - naphthyl) - 5 - pyrazolone, 1 - phenyl - 3 - (4<1>-carboxyphenyl) - 5 - pyrazolone, and 1 - (2<1> - hydroxy - 3<1> - carboxy - 5<1> - sulphophenyl)-3-(4<11>-chlorophenyl)-5-pyrazolone.
Patent GB-263471-A (GB)
Title: Improvements in or relating to steam generators
IPC: F22B7/12
Filed: 1926-11-05
Abstract: 263,471. Robinson, M. Nov. 5, 1926. Compound boilers; partitions in water space.-A boiler is centrally divided by partitions extending longitudinally and from top to bottom of the boiler shell to form a separate generator working independently of the main boiler. An independent generator 4 in a returntube boiler consists of side plates 2 riveted to the boiler shell and to a back plate 3, into which are expanded return flue tubes 21 extending through the generator. The upper part of the generator has cross stays 6 and the lower part is stayed to the side furnace flues and to the boiler shell. The longitudinal boiler stays 24 serve as longitudinal stays for the generator.
Patent GB-877493-A (GB)
Title: Improvements in or relating to a receiver changing device
IPC: B65G23/42
Filed: 1958-08-29
Abstract: 877,493. Conveyers. BRITISH PETROLEUM CO. Ltd., and NATHAN, W. S. Sept. 24, 1959 [Aug. 29, 1958], No. 27796/58. Class 78 (1). A removable holder 1 adapted to hold a plurality of receptacles 2, each of which is in contact with two adjacent receptacles, comprises facing grooves 9 formed in the top and bottom plates 6, 7 along which the receptacles are propelled by an arm 19, which after insertion between a pair of receptacles is turned to move one of the receptacles through a distance equal to its diameter. The arm is connected by a vertical pivot 20 to the end of the piston-rod 17 of air cylinder apparatus 4. As the piston moves outwards a cross-piece 21 attached to the base of the arm strikes an adjustable stop 22 and the arm turns about the pivot 20 until the desired movement of a receptacle has been accomplished. The propelling apparatus is mounted on a fixed base 5 on which the holder 1 is located in correct position by stops 15. A large hole in the base of the holder allows it to be placed over the propelling mechanism. A hole 14 in the plate 6 allows material to be inserted in each receptacle when it is stationary beneath it. Receptacles are inserted and removed through an aperture I in the plate 6. This operation is facilitated by the provision of an aperture 13 in the side of the holder.
Patent GB-167107-A (GB)
Title: Improvements in lee-board fittings for ships
IPC: B63B41/00
Filed: 1920-10-01
Abstract: 167,107. McGeoch & Co., Ltd., W., and MeGeoch, W. Oct. 1, 1920. Lee boards 3 are attached to members 1, 2, Fig. 2, which when not in use are folded down into a recess 5.
Patent GB-1043753-A (GB)
Title: Press tool gripper
Inventor: BEARD JACK HERBERT
IPC: B21D37/04
Filed: 1964-07-07
Abstract: 1,043,753. Tool holders; stamping. DAVY & UNITED ENGINEERING CO. Ltd. June 22, 1965 [July 7, 1964], No. 27886/64. Headings B3H and B3Q. A press tool gripper includes a gripping head 28 which is normally urged vertically upwards by spring discs 18 to clamp a press tool 31 against a crosshead 13. A gripper is conveniently positioned on each side of the tool. The head 28 is pivoted at 26 to a rod 15, the spring discs acting between a collar 20 on the rod and a flange 17 secured to a crosshead 12. When the rod 15 is pressed downwardly by an hydraulic ram 21, or by appropriate hydraulic modifications to the cylinder 14, the head moves vertically to release the tool and then, by means of a pair of links 33 pivoted at 32, is constrained to move laterally, to the dotted position shown. A transversely situated spring connecting the head 28 and links urges the parts towards each other to thus assume a vertical position.
Patent GB-270569-A (GB)
Title: Improvements in and relating to devices for cleaning and washing crockery and the like
IPC: A47L15/39
Filed: 1926-11-06
Abstract: 270,569. Staines, F. Nov. 6, 1926. Plates, dishes, and the like, washing. - The plates &c. are rotated between rotary cleaning bodies in the form of discs or flaps of rubber or other flexible material. The rotary cleaning bodies 13, 14 are driven from the motor 6 through worm gearing and the plates are supported between the cleaners by a roller 16 and are given a reciprocating motion, in addition to the rotation produced by the motion of the cleaners, by a skew disc 15 or a disc formed with a cam surface. Alternatively the cleaners themselves may be reciprocated. The plates &c. are so supported by the roller that they tend to fall towards the skew wheel, and not more than half the surface of a plate is covered by the cleaners at any time. The cleaners 14 comprise spaced discs, and the cleaners 13 comprise flaps of rubber secured to a hub 11, the striking faces of the flaps being recessed as at x to adhere to the plates &c. by suction. Alternatively, the cleaners may comprise rubber discs deeply serrated to produce flaps. The skew or cam disc may be dispensed with and the discs set at an angle on their shafts.
Patent GB-1152778-A (GB)
Title: Gyromagnetic Resonance Spectrometer
Inventor: FEENEY JIM
IPC: G01R33/46
Filed: 1967-06-16
Abstract: 1,152,778. Gyromagnetic spectrometers. VARIAN ASSOCIATES Ltd. June 16, 1967, No.27956/67. Heading G1N. In a gyromagnetic resonance spectrometer having a choice of five field scan widths, two field scan times and eight low pass filters, a press button 36 is provided to enable an unskilled operator automatically to select a predetermined set of conditions. The button may also select a fixed resistor 22 instead of an adjustable resistor 17 in the output of a sideband modulator 4. Alternatively, the predetermined set of conditions may be indicated by coloured dots 38.
Patent GB-282533-A (GB)
Title: Improvements in or relating to concrete building blocks
IPC: E04B2/04
Filed: 1926-11-08
Abstract: 282,533. Kynnersley, T. J. Nov. 8, 1926. Blocks for walls; reinforced blocks.-Solid concrete building blocks are made of a capacity equal to six or eight standard building bricks. Fig. 2 shows a block 1 having a stepped formation and corresponding to six ordinary bricks, together with a corner block 2. Fig. 5 shows a block 4 simulating the English bond and having a face side equivalent to four header and two stretcher bricks, while Fig. 8 illustrates a block 6 simulating Flemish bond, the face of which is equivalent to two header and two stretcher blocks. Fig. 10 shows a reinforced 'block for a sill or lintel with a frog on one surface, with which all the various forms of blocks may be provided.