baber/WOPTO huggingface dataset:
Patent GB-696861-A (GB)
Title: Improved carriage return control means for draw benches or the like
IPC: B21C19/00
Filed: 1951-06-29
Abstract: 696,861. Drawing. BRITISH TUBE MILLS (AUSTRALIA) PROPRIETARY, Ltd. June 29, 1951 [July 6, 1950], No. 15532/51. Class 83 (iv). A carriage return control for draw benches in which a carriage moves on tracks and is drawn outwards from the die plate end by engagement with continuously moving chains, comprises flexible means secured to the carriage, driving means engaging the flexible means, an electric motor to revolve the driving means, and means to control energization of the motor to return the carriage, means to de-energize the motor armature before the carriage reaches the die plate end, means to provide an electrical braking force to the carriage when the motor ceases to drive, and interlocking means to hold the carriage at the die plate end after return and until released. A cable 11, coupled to the carriage 3 passes around drums 14 driven by an electric motor 17. Driven from the shaft 18 of the drums is a timing mechanism comprising a lead-screw 20 on which travels a nut 21 which actuates a switch 22 at a given time during the return of the carriage, to thereby disconnect the armature of the motor 17 from the supply and load it with a resistance to cause the motor to apply braking to the carriage so that it will just reach the die plate and be held by a catch provided thereat. A switch 30, Fig. 6, is held closed by a friction member 31 on a wheel 32 chain-coupled to the lead screw 20, while the latter rotates, but should the lead screw stop rotating the member 31 moves back on the now stationary wheel and opens the switch 30 to break the circuit. The carriage is held at the die plate by a latch 42 which engages a bar 43 and a hydraulic or pneumatic cylinder 40 engages a member 41 to cause grips (not shown), on the carriage to engage the ends of the tubes to be drawn. Switches 44, Fig. 2, which close when engaged by a roller of the draw chain 6, in series with a switch 45 closed by engagement of the latch and bar 42, 43, closes an operating circuit to actuate the air control to the cylinder 40, causing the tube grips to operate, lifting the latch 42 and allowing catches 5 to engage correctly with links of the chain 6. A switch 50, closed by a cam on the carriage, maintains the circuit closed for a short period after the draw commences. A hydraulic or pneumatic cylinder 55 maintains tension on the cable 11.
Patent GB-1068989-A (GB)
Title: Production of preformed coke
IPC: C10B53/08
Filed: 1965-04-12
Abstract: A preshaped body for coking has three components: 35 to 75% by weight of coking coal; 65 to 25% by weight of finely divided substantially non-coking solids; and 3 to 40% by weight of total solids of a hydrocarbon liquid which is capable of continuous gasification during coking.  Weakly coking coals (O2 content 7 to 10%) may be employed, of particle size up to 0.5 cm., and the non-coking solids may be coke, anthracite, char, petroleum coke, or noncarbonaceous material, e.g. lime or rock dust (particle sizes are given).  The liquid should be one of which at least the major portion is gasified over the range 260-600 DEG  C., i.e. during formation of the coke structure in the coal. Preferred materials are petroleum derivatives having flash points above 70 DEG  C. and distillation ranges such that 50% at least is gasified between 370 DEG  and 600 DEG  C., e.g. residual fuel oils, Bunker C oil, asphalt and blends thereof, and tar oils. After admixing, the body is shaped by a conventional briquetting or pelletizing process, and the bodies are coked on a travelling grate, see Fig. 1 (not shown), which has an underlayer of coal or lignite which is burnt to provide the heat.
Patent GB-1268788-A (GB)
Title: Rocking and reclining chair
IPC: A47C1/0355
Filed: 1969-06-06
Abstract: 1,268,788. Leg-rest. MOHASCO INDUSTRIE! Inc. June 6, 1969 [July 31, 1968], No.15538/71. Divided out of 1,268,787. Heading A4J. A footrest for a reclining/rocking chair has two rests 100, 102 which are extended as shown, and, when retracted lie vertically and one behind the other. They are controlled by an operating handle 150.
Patent GB-951022-A (GB)
Title: Endomethylenic copolymers
IPC: C08F10/00
Filed: 1962-04-24
Abstract: High molecular weight linear copolymers of one or more unsaturated endomethylenic compounds with one or more alpha-olefins and/or ethylene, and which never contain two or more consecutive monomeric units derived from the endomethylenic compounds, are made by copolymerizing the chosen monomers in the presence of a catalyst system prepared from a halogenated organometallic aluminium compound and a vanadium compound. The aluminium compound may be complexed with an amine ether, ketone, or amide, or an "onium" halide, or an alkali metal halide. The vanadium compound may be the oxychloride, tetrachloride, di- or tri-acetylacetonate, or complexes of vanadium halides with diketones, ketoesters, amino-alcohols, aminoaldehydes, oxyaldehydes, and Lewis bases, or vanadium salts of organic acids or compounds such as vanadyl glycollate vanadyl lactate, or ammonium vanadaly-malonate. The copolymerizable monomers may be di-cyclopentadiene, nor-bornene, ethylene, propylene, butene-1, or 4-methyl-4-pentene. The polymerization may be effected in bulk, or in an inert solvent or diluent. The copolymers may be sulphur vulcanized. Specification 935,986 is referred to.
Patent GB-587181-A (GB)
Title: Improvement in catalytic hydrogenation of acetophenone to phenyl methyl carbinol
IPC: C07C29/145
Filed: 1944-08-17
Abstract: A copper-chromium hydrogenation catalyst contains 7-25 parts chromium per 100 parts copper and is prepared by forming, preferably by co-precipitation, a mixture of copper and chromium carbonates and heating to about 300 DEG C. to produce the oxides.  The catalyst is used in the production of phenyl methyl carbinol by reduction of acetophenone, and may be activated by heating with hydrogen in presence of acetophenone.ALSO:Phenyl methyl carbinol is produced by introducing hydrogen under pressure into acetophenone in presence of a copper-chromium catalyst prepared by igniting a mixture of the carbonates and containing 7-25 parts chromium per 100 parts copper. For example, the pressure may be 75 lb. per sq. in. and the temperature 130 DEG  C.
Patent GB-553962-A (GB)
Title: Production of chemically toned and dye toned photographic images
IPC: G03C7/26
Filed: 1941-12-05
Abstract: 553,962. Photographic chemically toned images. TULL, A. G. Dec. 5, 1941, No. 15705. [Class 98 (ii)] The colour of a coloured insoluble metal ferrocyanide image is restored after treatment resulting in at least partial decolorization without causing solution of the metallic radical by treatment with a solution containing potassium ferrocyanide and not more than “ to ¢ per cent by volume of acetic or sulphuric acid. The bath causing decolourization may be in the case of a Prussian Blue image an alkaline solution and in the case of an uranium ferrocyanide image an alkaline bath not containing an alkali metal or ammonium carbonate. The treatment may be applied to restore the colour in two or more superimposed layers containing different metal ferrocyanide images, e.g. layers containing Prussian Blue and uranium ferrocyanide images respectively. A colourless mordanting image e.g. zinc ferrocyanide may be similarly treated. Specifications 532,870 and 553,952 are referred to.
Patent GB-784801-A (GB)
Title: Improvements in or relating to cartons
IPC: B65D5/02
Filed: 1955-06-01
Abstract: 784,801. Cartons; packaging. AKTIEBOLAGET AKERLUND & RAUSING. June 1, 1955 [June 16, 1954], No. 15724/55. Addition to 729,284. Classes 18 and 94(1). The carton described in the Specification and the sealing sheets, have an inner coating 17 of plastic, wax, rubber &c. applied in liquid or sheet form. The coating on the carton covers and stretches with the tufts 7 formed between the closure flaps when these are spread outwardly. The sealing sheet coating adheres to the carton coating to form an improved seal. Another modification, when the glue lap 16 of the carton extends across the closure flaps 4, consists in sealing the channel formed by the edge of the lap beneath the sealing sheets 8 at each end by indentations 20.
Patent GB-593937-A (GB)
Title: Improvements in electric cables
IPC: H01B11/00
Filed: 1945-06-20
Abstract: 593,937. Cables ; suspending cables. WHEELER & CO., Ltd., F. H., and WEBBER, D. F. June 20, 1945, No. 15730. [Class 36] A communication cable com prises a number of line pairs, each pair having a lay different from the others, and a tensile wire lying outside the group of lines, but bound thereto by a metal tape of long lay, the whole being bound together by non-metallic material without the use of metallic screens or sheaths. In the example shown, the eight conductors a, insulated with polyethylene, are laid up in pairs with lays of 3, 4, 5 and 7 inches and the pairs are twisted together with a lay of 10 inches and covered with two impregnated cotton tapes c, d. A stranded steel wire e is placed outside these tapes and is held by a narrow steel tape f with a 2-inch lay. This binding is covered with two impregnatec cotton tapes g and a cotton braid h. The cable is suitable for transmitting four different items at audio-frequency.
Patent GB-1499861-A (GB)
Title: Optical lens system
IPC: G02B3/00
Filed: 1975-04-16
Abstract: 1499861 Camera objective POLAROID CORP 16 April 1975 15745/75 Heading G2J A camera objective comprises a single simple meniscus lens 16 whose first surface T 1  is spherical, and whose second surface T 2  is aspherical, a first aperture stop 18 being situated so as to provide maximum reduction of coma aberration in the image, and a second aperture stop 20 placed between stop 18 and the lens. The arrangement is stated to offer an "apparently" smaller aperture for oblique rays and hence enhances depth of field at the edge while providing more continuous vignetting from the centre towards the edge. The asphoricity is stated to reduce astigmatic field curvature and spherical aberration. Data for one example is given. The lens element is preferably moulded and may be of polymethyl methacrylate.
Patent GB-199405-A (GB)
Title: Improvements in or relating to gill drawing frames
IPC: D01H5/04
Filed: 1923-06-18
Abstract: 199,405. Hemsley, G. T. June 19, 1922, [Convention date]. Gill boxes and frames. - The upper faller screw A is provided with a recess 41 and a tapped hole 40. The cam D is provided on the inside with a stem, which fits accurately in the recess 41, and on the outside with a central annular bearing-piece 52, which forms an end support for the screw A. The cam is secured by a screw H engaging the hole 40. The stem and recess are provided with flat sides or are otherwise shaped to prevent the cam turning relatively to the screw. The cam may be provided with a projection to enter a recess in the faller screw and be secured by a screw, both projection and screw being out of centre, or it may be secured by two screws.
Patent GB-1275522-A (GB)
Title: Improvements in or relating to semiconductor elements
IPC: H01L29/06
Filed: 1970-04-03
Abstract: 1275522 Semi-conductor devices TRANSISTOR AG 3 April 1970 [9 April 1969] 15870/70 Heading H1K A semi-conductor device having a symmetrical switching characteristic comprises five layers 1-5 of alternating conductivity type symmetrically disposed with respect to the mid-plane 7 of the middle layer 3, the conductivity of the layers 2 and 4 being intermediate in value between that of the low conductivity middle layer 3 and that of the high conductivity outer layers 1 and 5, which outer layers carry electrodes 8, 9. The device has a breakdown voltage of about 40 volts and a residual voltage, to which the forward voltage drops in the conducting state, of 10-20 volts. In the Si device described these characteristics are attained by forming the P- type layers 2, 4 by Ga diffusion, leaving a 50 Á wide 300 # cm. N<SP>-</SP>-type middle layer 3. The outer N<SP>+</SP>-type layers 1, 5 are formed by P diffusion, the Ga concentration at the N+P junctions S 1 , S 4  being 2-3 Î 10<SP>17</SP> cm<SP>-3</SP>.
Patent GB-153045-A (GB)
Title: Improvements in apparatus for carburetting, lighting and heating gas
IPC: C10J1/00
Filed: 1919-06-24
Abstract: 153,045. Perdrisat, C. June 24, 1919. Carburetting.-In a carburettor for enriching gas, of the kind in which the gas is passed through a constant depth of liquid the level of which is maintained by means of a liquid supply pipe depending from a storage vessel, the upper end of the tube c through which the liquid is supplied from the storage vessel a to the carburettor b is provided with a valve d<1> tending to be kept closed by a spring f but held open when a stopper h is screwed home to close the filling- opening o<4>. The gas to be enriched enters through a pipe k and after bubbling through the liquid passes through an outlet l provided with a metal grid m.
Patent GB-1167378-A (GB)
Title: Metal Extrusion Press with Die-Holder Locking Means
Inventor: HERMES ROLF
IPC: B21C35/04
Filed: 1967-04-06
Abstract: 1,167,378. Extruding. LOEWY ROBERTSON ENG. CO. Ltd. 6 April, 1967, No. 15933/67. Heading B3P. In a metal extrusion press having an axially movable billet container 18, Fig. 8, a die assembly 8, 10 mounted in a movable die carrier 28, and cutting means 48 movable across the extrusion axis for severing the discard; the die assembly is releasably secured to the carrier by locking members 52, Fig. 2, actuated by interengageable members 60, 80 on the carrier 28 and the stationary press platen 2 respectively, the members 60, 80 being disengaged upon movement of the carrier. The latter may be a rotary turret but is preferably a slide 28 movable in upper and lower guides 30, 32. The die assembly consisting of die 8 and holder 10, is mounted upon a pad 36 adjustable by shims, in a recess 34 in the slide and is locked thereon by transversely slidable locking plates 52 actuated through pin-and-slot connections 64, 66 by shafts 60 on the die slide. These shafts have forked ends 60<SP>1</SP> which engage over flats on shafts 78, 80 rotatably mounted on the upper guide 30. These shafts are interconnected by link 108 and lever 96, 110 for simultaneous operation, by a compressed air motor 102. The forks 60<SP>1</SP> permit movement of the slide 28 when the plates 52 are in their locked position. After extrusion, the plates are released, and the container 18 is retracted, Fig. 9 (not shown) whereby the die assembly is withdrawn from the slide. The extruded product P is then severed from the discard D and dummy block 22 by a circular saw blade 48 driven by motor 50. The container 18 and die assembly are then moved to the left, the locking plates are engaged, the container is again retracted, Fig. 11 (not shown), and the discard D with the dummy block are removed from the rear face of the die by a shear 42 and fall into a tray. Both the saw 48 and shear 42 are adjustable along the extrusion axis. Alternatively the die assembly with the discard may be transferred by the slide to an inoperative position. In another arrangement, Fig. 12 (not shown) the discard is severed by the saw or shear between the die 8 and the container. The slide may carry two die assemblies and an opening (40), Fig. 1 (not shown) for discharge of a partially extruded billet. Reference is made to the extrusion of aluminium.
Patent GB-210353-A (GB)
IPC: F04D29/28
Filed: 1923-06-20
Abstract: 210,353. Erste Br³nner Maschinen- Fabriks-Ges. Jan. 31, 1923, [Convention date]. Impeller blades.- The impeller of a compressor has straight or curved blades s so fixed that the distance b between them at their outer ends is not more than 2.2 times the distance a between them at their inner ends.
Patent GB-919498-A (GB)
Title: Improvements in or relating to fluid couplings
IPC: F16D33/20
Filed: 1959-05-11
Abstract: 919,498. Hydraulic couplings. AMERICAN RADIATOR & STANDARD SANITARY CORPORATION. May 11, 1959 [May 9, 1958], No. 16104/59. Class 69 (2). An hydraulic coupling comprises vaned impeller and turbine members 20, 26, and fluid guide vanes 90 carried by one of the members to deflect the fluid flowing from that member towards the other member. The output characteristics of the coupling may be varied by selecting a guide vane member from a plurality of differently proportioned guide vane members and mounting the member on the turbine member 26 to vary the guidance of the fluid flowing from the turbine to the impeller. The guide vanes are disposed between concentric rings 86, 88, the ring 86 having a flange 82 for mounting on the turbine member; the frontal area 100 of the ring provides a baffle effect to the fluid flow to reduce the drag torque of the coupling. The vanes are arranged at an angle to the axis of the coupling to guide the flow of fluid and reduce turbulence. A similar guide vane member may be mounted on the impeller to guide the fluid flowing from the impeller to the turbine and may be provided separately or in addition to the guide vanes 90 on the turbine member. In another embodiment, the guide vanes are arranged in concentric rings 116, 118, Fig. 5, to guide the fluid at high and low speeds. A scoop tube 48 in a chamber 46 is provided to vary the amount of liquid in the coupling.
Patent GB-1494547-A (GB)
Title: Safety device for preventing accidental opening of a machine door during operation of a household laundry washing machine
IPC: D06F37/42
Filed: 1975-04-18
Abstract: 1494547 Machinery safety devices INDUSTRIE A ZANUSSI SpA 18 April 1975 [24 April 1974] 16159/75 Heading F2J [Also in Division D1] In a laundry washing machine, latching member 42 on the door 23 is locked in closed position by a slider 44, which at the same time actuates electric control means 51 for presetting the machine for operation, and is itself held against accidental release by part 33 of means 32 floating in a reservoir 25 in which the liquid rises to the same level as that in the washing tub. As shown, the lower part 35 of part 33 rests on float 32 and is connected by bellows 37 to the reservoir and a gasket surrounding rod 33. The discharge duct 17 is connected to reservoir 25 so that it remains filled until the hub is empty to prevent premature release of the door.
Patent GB-708283-A (GB)
Title: Improvements in friction elements for brakes
IPC: F16D69/02
Filed: 1951-07-07
Abstract: 708,283. Disc brakes. DUNLOP RUBBER CO., Ltd., and BUTLER, H. J. June 20, 1952 [July 7, 1951], No. 16170/50. Class 103(1) Friction pads for disc brakes, which may be segmental, as in Fig. 2, or circular, as in Fig. 3, comprise one lamination 1, 3 of material of high frictional resistance to produce the braking force and a second lamination 2 or 4 of a material of substantially different hardness which will give an indication that the main friction layer 1 or 3 has worn away. The lower layer 2 or 4 is preferably a material of such low frictional resistance that it is made obvious to the operator by the change in deceleration produced by a given pedal pressure that the friction pads require renewal. Alternatively the lower layer may be such as to give an audible squealing note when in contact with the disc. The construction shown in Fig. 3 is more economical than that in Fig. 2 in that a further layer 5 of a material having no appreciable frictional quantities is used to make up the necessary thickness of the pad. The form of friction pad described is stated to be suitable for disc brakes as described in Specification 688,382. Specification 711,059 also is referred to.
Patent GB-439492-A (GB)
Title: Improvements in or relating to cathode ray apparatus
IPC: H01J29/52
Filed: 1934-05-30
Abstract: 439,492. Coiling-mandrels. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London. - (Assignees of Orth, R. T. ; 300, Carteret Place, Orange, New Jersey, U.S.A.) May 30, 1934, No. 16175. Convention date, May 30, 1933. [Class 83 (iv)] [See also Group XL] A heating filament 34, Fig. 2, for the cathode of a cathode-ray tube is wound on a molybdenum mandrel 42, Fig. 3, with a double helical groove 43. A projection 44 is machined at the end of the mandrel to prevent the loop 34<1> of the filament from crossing the axis of the mandrel.
Patent GB-702946-A (GB)
Title: Improvements in or relating to the inhibition of metal pickling baths
IPC: C23G1/04
Filed: 1951-07-09
Abstract: A pickling bath contains, as inhibitor, a mixture of an alkyl cycloaliphatic or hydroaromatic pyridinium salt, e.g. lauryl pyridinium sulphate, and a soluble salt of thiocyanic acid, e.g. an ammonium or alkali metal thiocyanate.  Hexamethylene tetramine may also be present, oxalic acid may be added to reduce smell and the components may be mixed with an inert solid diluent, e.g. sodium sulphate.
Patent GB-1419054-A (GB)
Title: Selectively transparent plate and a method of manufacturing it
IPC: C03C17/36
Filed: 1974-04-11
Abstract: 1419054 Sputtering layers on transparent substrates RTC LA RADIOTECHNIQUECOMPELEC 11 April 1974 [12 April 1973] 16185/74 Heading C7F A transparent substrate of e.g. glass or plastics is coated by e.g. sputtering with a layer of Au then a layer of iridium oxide. The target for sputtering Au consists of Au 90 to 98-Bi 10 to 2. The iridium oxide may be sputtered in air from an Ir target. The substrate may have a sublayer of bismuth oxide, and it is moved past the sputtering targets.
Patent GB-1139760-A (GB)
Title: Expanded bed nuclear reactor fuel module
IPC: G21C3/04
Filed: 1968-04-04
Abstract: 1,139,760. Fast breeder reactors. UNITED STATES ATOMIC ENERGY COMMISSION. 4 April, 1968 [26 May, 1967], No. 16187/68. Heading G6C. A fuel module forming part of the core or blanket of a breeder reactor comprises a shell 11 of hexagonal cross - section having an inlet 12 and outlet 37 for liquid sodium coolant, the coolant flowing through tubes 21 connected between lower and upper end plates 14, 22. The fuel is in the form of a slurry consisting of particles of plutonium dioxide and uranium dioxide in a fluidizing medium of liquid sodium and is initially admitted through a pipe 33. The fluidizing medium maintains an expanded bed 40 of fuel between a distributer plate 24 and a level control screen 30, this medium being kept in circulation and leaving through a pipe 36. Movement of the fluidizing medium through the expanded bed 40 is made possible by providing clearance spaces around the tubes 21 in their passage through the plate 24 and intermediate baffles 27. The baffles serve to prevent circulation of the bed 40 and thus enable an axial temperature gradient to be formed in the module. The fuel may be discharged by applying fluidizing medium to an inlet 34.
Patent GB-720993-A (GB)
Title: Improvements in trucks for handling concrete and like containers and stacks of bricks or the like
IPC: B62B1/12
Filed: 1953-06-12
Abstract: 720,993. Hand-trucks. OLSSON, B. O. A. June 12, 1953, No. 16245/53. Class 108 (1). A hand-truck comprises a rectangular frame provided with wheels 7 and with lateral extensions 8 which engage the downwardly-open claw members 15 on a brick-supporting frame 14 or 24 on a frame 21 for pivotally supporting a container 20. The upper end of the frame 21 is provided with claw members 25 which hook over a transverse member 9 of the truck frame.