baber/WOPTO huggingface dataset:
Patent GB-769514-A (GB)
Title: Improvements in or relating to the production of hydrogen peroxide
IPC: C01B15/023
Filed: 1953-07-09
Abstract: <PICT:0769514/III/1> In the production of hydrogen peroxide by successive reduction and oxidation of an alkyl anthraquinone, a solution of an alkyl anthraquinone in an organic solvent is partially reduced with hydrogen in the presence of a particle form hydrogenation catalyst, the partially reduced solution is oxidzed with a free oxygen-bearing gas to produce hydrogen peroxide, the oxidzed solution is distilled in the presence of steam at 70-105 DEG C. under reduced pressure of 5-65 mm. Hg., so that substantially all the hydrogen peroxide and water are vaporized overhead and the bulk of the organic solvent is separated as bottoms fraction, and hydrogen peroxide is recovered from the overhead.  The alkyl anthraquinone, e.g. 2 - methyl, 2 - isopropyl, 2 - tert - butyl, or 2 - ethyl anthraquinone, may be in solution in mixtures of benzene and cyclohexanol, or, preferably, mixtures of tetralin and cyclohexanol. Electrolytic hydrogen passes at 211 into absorber 212 filled with activated carbon and, thence, to reduction tower 214 where it contacts the anthraquinone solution recycled through 215.  The reduction tower contained a, preferably, fixed bed of catalyst, e.g. Raney nickel, or palladium or platinum on alumina, and operates at 30-80 DEG C. to obtain 50-70 per cent conversion.  The reduced solution passes through filter 216, and water-cooled heat-exchanger 218 to oxidizer 222, where it is contacted with air entering at 223. The oxidation may be as described in Specification 768,675 by concurrent or countercurrent contact at 30-80 DEG C. and 15-300 psia in a tower packed with inert solid.  The oxidized solution is withdrawn at 225 through steam-heated heat-exchanger 226 to stripper 230, having steam coil 231, where it is contacted with steam entering at 249.  The stripped solution withdrawn at 232 is recycled to the reduction tower through 215. Aqueous hydrogen peroxide containing solvent passes overhead to condenser-separator 235 and the separated solvent phase is returned as reflux to the stripper through 247, while the aqueous phase passes to centrifuge 238.  Further separated solvent is returned from the centrifuge by 239 to oxidizer 222, and aqueous hydrogen peroxide passes to concentrator 241 heated by steam coil 242 and operated under reduced pressure e.g. 50 mm. Hg.  Water and remaining solvent pass ovehead to condenser 244, whence part of the condensate is returned as reflux to the concentrator 241 and the remainder is passed to vaporizer 248, which vaporizes water for the steam supply to stripper 230.  Hydrogen peroxide is withdrawn at 246. Any of the above pieces of equipment may be duplicated, particularly the absorber, reduction tower, and filter to permit regeneration of the absorbant and catalyst and cleaning.
Patent GB-856277-A (GB)
Title: Improvements relating to cutting and abrading tools
Inventor: BOOTH CHRISTOPHER HODGSON
IPC: B23D71/00
Filed: 1958-02-12
Abstract: 856,277. Drills and rotary filing-tools. SIMMONDS AEROCESSORIES Ltd. Feb. 2, 1959 [Feb. 12, 1958], No. 4597/58. Class 83 (3). A cutting or abrading-tool similar to those described in Specifications 666,573, 695,830, 695,859, 821,510, 836,051, 836,242, and 839,401 has end-cutting edges for boring or drilling on rotation of the tool, similar to those described in Specification 856,278. The tool shown in Fig. 3 has a part 1<1> of sheet-metal rolled into a cylinder, leaving a gap 4 for swarf-removal, and has cutting-edges 6 along its length and 6a adjacent the gap 4. The ends 101, 11<1> which may be integral with part 1<1>, or separate steel-strips welded thereon, have teeth 12 with a clearance-angle, an included-angle of 60 degrees but no positive rake-angle, set alternately towards and away from the tool-axis, as seen in end view. Alternatively, groups of teeth 12<1> are separated by a tooth 14, Figs. 4 and 5, which leads the teeth 121 and cuts a groove in the work, thus controlling the depth of cut, guiding the teeth 12<1> and permitting a positive rake-angle. The teeth 14 may be disposed alternately to cut two grooves. In a modification, the teeth may be of the form shown in Fig. 9, similar to that described in Specification 756,145, wherein the depth-controlling teeth 14<1>, which are bevelled alternately, lead the teeth 12<11>. A tool similar to that described in Specification 856,276, for cutting thicker work, has two sets of end-cutting teeth 89, Fig. 10, which form a groove in the work, and tongues 81, 82 having cutting-edges 84, 85 for removing the material inside the groove. The edges 91, 92 being lower than their respective cutting- edges, control the depth-of-cut.
Patent GB-411792-A (GB)
Title: Bullet-brush for the internal cleaning of tubes fitted in condensers, oil coolers, locomotive boilers and the like
IPC: F28G1/02
Filed: 1934-02-13
Abstract: 411,792. Cleaning tubes. BARRETT, J., 3, Hirst Street, Brigshaw, near Castleford, Yorkshire. Feb. 13, 1934, No. 4699. [Class 99 (ii).] A bullet operated by compressed air or water for cleaning condenser, &c., tubes is in the form of a brush constituted by wire bristles secured to a twisted wire core. The ends of the core project beyond the bristles and are provided both with a hard-leather washer of diameter slightly less than that of the tube to be cleaned, for maintaining the bullet central within the tube, and one with a pliable driving- washer of slightly larger diameter.
Patent GB-1142987-A (GB)
Title: A packaging assembly for radioactive materials
IPC: G21F5/015
Filed: 1968-01-30
Abstract: 1,142,987. Shielded containers for radioactive material. UNION CARBIDE CORP. 30 Jan., 1968 [31 Jan., 1967], No. 4729/68. Heading B4Q. A package for radioactive liquid comprises an outer container 10 sealed to a cap 11 by an 0-ring seal, this seal being broken by a pull tab 15 when it is required to remove the cap to use the liquid. A descriptive scale 12 indicating units of radioactivity is provided on the lower edge of the cap and the upper edge of the container has a descriptive scale 13 indicating units of time. The container encloses a receptacle of shielding material and this receptacle surrounds a bottle containing the liquid (Fig. 2, not shown).
Patent GB-196436-A (GB)
Title: Improvements in atmospheric gas apparatus for cooking and heating
IPC: F24C3/02
Filed: 1922-02-17
Abstract: 196,436. Duddy, D. E., Read, J. C. C., and Godfrey, W. H. Feb. 17, 1922. Portable gas stoves; air, supplying for combustion; baffles. -- A portable gas stove for cooking and heating comprises an open-topped chamber a, having legs d, in which is centrally arranged an atmospheric gas burner e, flame outlets i bein, provided in the upper edge of the wall c which serves to support a cooking utensil. The burner is of the kind having a horizontal series of jets e<1>, and air for combustion is supplied through a number of slots h arranged in the bottom b of the chamber a around the burner e. The stove is adapted for heating by the provision cf a perforated cylinder j, Fig. 3, fitted internally with conical baffles m, n, the former perforated and the latter imperforate, and provided at the bottom with a horizontal flange k, which rests on the upper edge of the wall c, and a vertical flange l fitting within the wall c so as to close the outlets i. In the modification shown in Fig. 4 the lower part of the burner is formed integral with the bottom b of the stove, the holes e' being provided in a cylindrical flange o on the burner top which is secured by a screw p and formed with an inverted conical projection to heat and direct the mixture issuing from the supply-tube g.
Patent GB-1089755-A (GB)
Title: Improvements in or relating to motor driven trucks
Inventor: GOODACRE CECIL
IPC: B60K17/04
Filed: 1965-02-03
Abstract: 1,089,755. Electric motor wheels. LANSING BAGNALL Ltd. Jan. 28, 1966 [Feb. 3, 1965], No. 4742/65. Heading B7H. [Also in Division F2] An electric motor wheel for use in an industrial truck comprises a ground wheel 10 in a rotatable mounting, an electric motor 32 and its housing 16 mounted coaxially with and in the interior of the ground wheel 10, bearings 14, 15 carried by the motor housing 16 for a sleeve 13, which is driven by the motor, is concentric with and extends around the motor housing and forms part of the ground wheel, and an epicyclic gear system between the motor and sleeve comprising, on the motor shaft, eccentrics 49, 52 which carry externally toothed gears 55, 56 that are eccentrically mounted on spindles 45 and that mesh with a fixed annulus gear 42 which is concentric with the motor shaft, the spindles being carried by an inward extension 44 of the sleeve 13 and being driven around the axis of the ground wheel and motor shaft by the gears 55, 56 to drive the wheel. The spindles, of which there are four (Fig. 4, not shown) pass eccentrically through apertures 57 in the gears 55, 56 and carry rotatable sleeves 58 which engage the apertures and with one of which at least each gear 55, 56 is in driving engagement at any time. A pair of external contracting brake shoes act on a brake drum 71 on the motor shaft 30 when a rod 90 on the vertical axis 20 of the wheel 11 is depressed (see also Division F2). The wheel is rotatable in a bearing 26 by a pinion 51 for steering.
Patent GB-534564-A (GB)
Title: Improvements relating to fastening devices for use with bolts and like threaded members
IPC: F16B37/04
Filed: 1940-03-13
Abstract: 534,564. Bolting; internal clamps. ALLAM, P. S. (Tinnerman Products, Inc.). March 13, 1940, No. 4746. [Classes 44 and 89 (i)] A one-piece sheet metal fastener for use with screws &c. comprises a blank bent to provide a bolt-receiving body portion with a pair of expansible arms bent to pass into an aperture in one of the parts. It is secured with a snap fastener action the arms being spread into anchored engagement by the insertion of the screw. Flange members or lugs limit the penetrations. The threads are engaged by opposed pairs of lugs offset according to the thread helix or by the deformed edge of a notched circular aperture giving a continuous one turn engagement. The engagement may be such that, as tightening, the lugs cut into the threads and prevent uncovering. Arms 10. 11 of a blank, Fig. 1, are bent to the shape shown in Fig. 3, parts 15, 16 acts as flanges to limit penetration and lugs 12, 13 engage the thread. The arms may be curled inwards instead of outwards. Fasteners formed from strip have lugs 26, 27,' Fig. 6, that limit penetration, or the stop may be formed with lugs 30, Fig. 8, for the purpose. Various shapes to which the arms 32, 33 may be bent are illustrated.
Patent GB-117790-A (GB)
Title: Improvements in and relating to Motor Vehicle Covers.
Inventor: OLSEN ALEX
IPC: B60N2/60
Filed: 1918-03-18
Abstract: 117,790. Olsen, A. March 18, 1918. Covers for exposed seats.-Flexible covers 20 for the seats of an automobile are mounted on rollers arranged in housings 18 and when withdrawn slope downwards from back to front and also from the sides to the centre forming a channel 23 from which water drains into a tube 23<a>. The sides of the covers are guided in slots in the sides of the vehicle by means of rollers 28, 29 mounted on frames secured to the covers. The slots are protected from the entrance of water by flaps 27. An alternative-form of guiding- means comprises rollers mounted in the side slot instead of on the cover. A slot is provided in the front cover for the steering-pillar and is covered by a sliding cover piece. The cover for the rear seat may be mounted as shown in Fig. 10 at 19<a>.
Patent GB-1071941-A (GB)
Title: Wood working machine
IPC: B27F1/04
Filed: 1965-02-04
Abstract: 1,071,941. Sawing; woodworking. W. PREWO, [trading as WILLI PREWO WERKZEUGUND MASCHINENFABRIK]. Feb. 4, 1965 [April 27, 1964], No. 4897/65. Heading B5L. A woodworking machine comprises a machine table 1, an upper cutting unit 2, adjustable along transverse grooves 5 in the table, a vertical lower tool spindle 9 mounted in the machine table, and a stop-bar 10 adjustably fixed in longitudinal grooves in the machine table. The machine also comprises a circular saw 4 and a feed-wheel 3 carried by beams 6, 7 which are adjustable about posts 3a, 4a between operative and out-of-the-way positions. The cutting unit 2 is adjustable along cross-grooves 5, 5a so that its spindle 2a may be coaxial with the lower spindle 9. The groove 5 may be arranged in a slide 32 which, with the cutting unit secured thereto by a toggle screw 8, can be removed from the operating area of the machine table 1 and placed on a receiving plate 33. When the unit is again required to be operated, the slide is replaced on the table abutting an edge 32a so that the tool is in position without requiring further adjustment. The machine has two stop-bars 10 which are longitudinally spaced on the machine table and are of ground steel. Each bar is connected by a pair of links 11, Fig. 2, to a contact rail 12, the bar being adjustable relative to the rail by a screw 13. A clamping plate 22 is disposed above the rail and bar and a screw 19 is disposed in the rail and has a T-member 16 at its lower end for engaging a longitudinal groove in the machine table and a toggle nut 21 which serves both to clamp the rail to the table and to clamp a link 11 to prevent movement between the rail and table. The assembly of stop-bar and contact rail may be mounted on a plate 26, Fig. 11, connected by a pivot 27 to a plate 25 adapted to be fixed to the machine table, a screw-and-nut arrangement 28, 29 being provided to adjust the angular position of the stop bar and a surface 30 of the plate 26 which supports a workpiece to be machined. The receiving plate 33 for the cutting unit when removed from the machine table may be fixed to the table or be on a separate stand 35, Fig. 5, the plate being adjustable about a pivot 39 and vertically adjustable by a spindle 37 and hand wheel 38. The plate may also be rotated through 180 degrees about a vertical axis so that the cutting unit may operate on a further machine table. The machine table 1 is provided with channels 41, 42, Fig. 6, through which shavings produced during operation of the machine fall to the rear of the machine. If only the lower spindle 9 is being used, the opening 40 of the channel 41 may be closed by a cover 43. A roller table 45, Fig. 1, is traversable along a rail 46 and is adjustable transversely of the rail. The table has a pair of apertures 57 in which posts 50, Fig. 7 and 9, may be fixed, each post having an angularly adjustable stop-bar 54 and arms 51 carrying clamps 52 for workpieces 49 which can be moved past the tools for tenon- ing or cutting.
Patent GB-199423-A (GB)
Title: Improvements in or relating to feeding apparatus for use in conjunction with cutting machines
IPC: D06H7/02
Filed: 1922-02-20
Abstract: 199,423. Dunlop Rubber Co., Ltd., and Monk, W. B. Feb. 20, 1922. Feeding and winding webs.-Relates to apparatus for feeding a web of canvas or other material for the manufacture of tyre covers to a cutting- machine, in which the material passing from the feed-rollers hangs in a loop from which it is intermittently withdrawn by the feed device of the cutting-machine, and in which a lining web which is unwound with the material from the stock roll is wound on a reel driven frictionally by the material, and consists in (1) the provision of two stock rolls and two winding-reels for the lining webs, so that when one stock roll is exhausted the feed may be continued from the other roll without interruption of the cutting- operation, (2) the provision of clutches on the shafts of the winding-reels of the lining webs whereby these reels may be positively driven to wind the surplus lining which precedes and follows the material, (3) means for automatically controlling the operation of the feed-rollers by the rise and fall of a jockey roller or bar hanging in the loop of the material, and (4) the construction of the feed device of the cutting- machine in the form of intermittently-driven endless bands. As shown in Fig. 2, two supply rolls A, C and two winding-reels B, D for the lining webs B', D', are removably mounted in the machine frame. When one roll is exhausted, the leading end of the material from the other roll is secured by adhesive to the rear end of the expiring web upon a table A<4>. (2) The reels B, D are normally driven frictionally by the material A<1> or C', but in order quickly to wind up the surplus lining material occurring at the beginning and end of the stock rolls hand-controlled clutches are mounted on the shafts of these reels so that they may be driven by chains from a transverse shaft driven by chain gear from the main driving-shaft J, Fig. 3, of the machine. (3) The web is drawn from the stock roll by feed-rollers E, F at a slightly greater rate than it is conveyed to the cutting-machine, so that it hangs in a loop G, Figs. 2 and 3, and the feed-rollers are driven by a chain E<2> from a wheel E<3> which is alternately clutched to and declutched from the main shaft J by a clutch element E<4> controlled by the rise and fall of a roller G' hanging in the loop. This roller at the limits of its travel operates pivoted arms G<3>, G<4> connected to a bar G<5> provided with a pair of projecting pins G<6>, so that a bell-crank lever G<7> is caused to actuate a sliding bar E<6> connected by a link E<5> to the clutch E<4>. The lever G<7> is held in both extreme positions by a spring G' connected to the pivot of the lever G<7> and to one end of the lever G<8>, the other end of which is pivoted to the upper arm of the lever G<7>. (4) The web is fed from the loop to the cutting- device by a series of endless bands H<1> passing round a pair of rollers one of which is driven intermittently in any suitable manner.
Patent GB-730326-A (GB)
Title: Hydraulic ore hoist
IPC: E21F13/04
Filed: 1953-02-23
Abstract: 730,326. Raising ore by means of liquid. GARDNER, P. S. Feb. 23, 1953, No. 5046/53. Class 102 (2). A hydraulic ore hoist comprises a pump 12, Fig. 1, drawing water from a tank 13 and delivering it to a pipe 11 connected at its lower end to a pipe 10 into which mixed ore and rock are fed through a port 33, Fig. 3, and carried upwards into a box 14 by the water. From the box 14 the mixture passes through a vibrating screen 15, where the larger pieces are collected, and thence via a duct 16 and a de-watering conveyer 17 to a settling tank 18. The water is returned to the tank 13 by a pump 19 and the solid material by a pump 18a to the bed of the conveyer 17 for filtering. At the loading level, ore is brought by a conveyer 23, Fig. 2, to a crusher 24. The crushed ore is collected in a bin 25 and passes to a measuring bin 26 and thence into a guide hopper 27 from whence it may be fed into an upper loading chamber 28 on the opening of a valve 53, Fig. 4. The lower end of the chamber 28 is connected by a passage 29c having a valve 44 to a lower loading chamber 29 from whence the ore is discharged through the opening 33 into the pipe 10. The pressure in the chamber 29 is substantially equal to the static head of water in the pipe 11 and the pressure in the chamber 28 may be raised to this level on the closing of the valves 53, 44 and the opening of a valve 31 in a duct 30 connecting the chambers 28, 29. Water from the chamber 28 may be discharged by a pump 66, and a check valve 67 into the chamber 29 against the static head to provide space for the ore charge, and excess water from the top of the chamber 28 may be drained off through a valve 69. The valves 53, 44, 31 and the pump 66 are all motorized and arranged to operate automatically in proper sequence, so that a measured quantity of ore is charged into the chamber 28 at atmospheric pressure, the pressure in the chamber 28 raised to static head pressure, the ore transferred to the chamber 29 at this higher pressure, and thence the pressure in the chamber 28 reduced to atmospheric to await a fresh charge. U.S.A. Specifications 616,537 and 368,691 are referred to.
Patent GB-859073-A (GB)
Title: Improvements in and relating to a hopper capable of being emptied in a regulatable manner
IPC: B65D88/58
Filed: 1959-02-13
Abstract: 859,073. Hopper discharge. ALLARD, P. J. M. T. Feb. 13, 1959 [Feb. 15, 1958], No. 5124/59. Class 78 (1). Adhesive material is discharged from hopper 18 by a pair of containers 6, 7 pivoted respectively at 8, 9 and operated by pairs of hydraulic jacks 20, 20a, so as to swing to discharge material therebetween. The containers have shaped inner edges 17, 17a which facilitate the swing of the hoppers.
Patent GB-839595-A (GB)
Title: Improvements in and relating to the production of artificial threads of polyacrylonitrile
Inventor: BENNETT ALBERT WALTER
IPC: D01F6/18
Filed: 1958-02-18
Abstract: <PICT:0839595/IV (a)/1> Threads are produced from homopolymers of acrylonitrile and from copolymers containing at least 80% of acrylonitrile by extruding downwards a solution of the polymers in a concentrated aqueous or aqueous alcoholic salt solution into a concurrently moving stream of an aqueous coagulating bath which is miscible in all proportions with the spinning solvent, the rate of feed of the bath being adjusted so that a substantially horizontal, stationary liquidliquid interface constituting a boundary between an upper stratum of coagulant of relatively low salt content and a lower stratum of relatively high salt content is formed and maintained in the coagulant stream, and withdrawing the freshly coagulated thread so formed, associated with at least part of the coagulant, from the coagulant stream at a point below the interface, the rate of feed of the coagulant to the spinning cell above the interface being the same as the rate of discharge of the coagulant from the cell below the interface.  The coagulant may be water or a dilute aqueous solution of the salt which is present in the spinning solution, and may be the wash liquor obtained by washing the threads free from the spinning solution salt, said liquor containing usually about 0.5 to 2% of the salt.  The salt in the spinning solution may be sodium or calcium thiocyanate or zinc or lithium chloride.  In an example, and as shown, 12.5 parts of a 94/6% acrylonitrile/methyl acrylate copolymer in 87.5 parts of a 51.5% aqueous sodium thiocyanate solution is fed through a supply line 15 to a downward facing spinning jet 16 mounted in a jet holder 17.  The spinning solution is extruded from the jet into a stream of 1% aqueous sodium thiocyanate solution which is supplied to a spinning cell 1 through pipes 12 which are an air-tight fit in the steel plate 5 and gasket 4 which form an air-tight closure at the top of the cell.  The tow 18 and a mixture of diluted spinning solvent and coagulant are withdrawn through an aperture 11 defined by adjustable shutters 8 held between the fixed plates 9, 10 at the bottom of the cell 1.  The top of the cell is provided with an air and liquor release valve 13 which is normally closed during spinning. The coagulant is fed into the cell 1 through the pipes 12 at a controlled rate such that a liquid-liquid interface 19 is formed below the jet 16 between the denser spinning solution-coagulant mixture and the lighter coagulant.  The coagulated tow 18 is withdrawn from the cell 1 and is stretched, washed and dried.  The liquor flowing from the cell with the tow and containing 14% sodium thiocyanate is passed to an evaporator in which it is concentrated to 51.5% salt content. The relatively high salt concentration in the liquor withdrawn from the cell facilitates further concentration of the solution or recovery of the salt.  Specifications 714,530, 768,708 and 796,294 are referred to.