baber/WOPTO huggingface dataset:
Patent GB-750358-A (GB)
Title: Hydrocarbon distillation process
IPC: C07C7/20
Filed: 1953-11-04
Abstract: The formation of polymers is minimized when distilling a composition comprising a major portion of hydrocarbons containing not more than 6 carbon atoms, the composition containing at least 0.01 per cent by weight of a diolefin having 3-6 carbon atoms, by carrying out the distillation in the presence of from 0.001 to 5 per cent of the weight of the composition of a polymerization inhibitor consisting of equal parts by weight of a mixture of hydrazine or an alkyl or aryl substitution product thereof and an organic carboxylic acid. The preferred mixture consists of phenyl hydrazine and acetic acid. Mono-, di-, tri-, and tetra substituted hydrazines in which the substitution group is alkyl, cycloalkyl or aryl, may be used and the acid may be formic, acetic, propionic or benzoic acid.  The inhibitor may be introduced at any stage in the distillation and is particularly effective against the formation of popcorn polymer.  In a preferred embodiment 50 parts per million each of phenylhydrazine and acetic acid are continuously introduced into the feed, consisting of a cracked hydrocarbon mixture absorbed in a higher boiling hydrocarbon absorption medium, to a de-ethanizer.  The tails are passed to the middle of a depropanizer carrying along the inhibitor mixture.  Part of the depropanizer tails is pressed back to the top of the absorber, the effluent from the absorber passing to the de-ethanizer where the inihibtor is continuously added.  The inhibitor thus protects the deethanizer, depropanizer and absorber, resulting in a six months' postponement of shut down.  In further examples the action of the phenylhydrazine-acetic acid mixture in inhibiting polymerization of styrene is compared with the action of other inhibitors, viz: p-chlorophenol, acetamide, p-tertiary butyl catechols, thioglycollic acid, a mixture of monocyclic terpenes, 3.5 dinitrobenzoylchloride, phenyl hydrazine, phenyl hydrazine and ammonia, p-tertiary butyl catechol and acetic acid, p-cresol. Specification 718,221 is referred to.
Patent GB-227812-A (GB)
Title: Improvement in spring-needle split-foot circular hosiery machine, fabric produced thereby, and method of making same
IPC: D04B9/18
Filed: 1924-12-18
Abstract: 227,812. Hemphill Co., (Assignees of Lawson, J.). Jan. 18, 1924, [Convention date]. Stockings and socks with seamless upper leg portions and lower leg portions of " split work," that is, a series of interengaged partial courses united in a suture seam or seams as at 17 - - 20 are knitted on circular machine with bearded needles. In a modified form of suture seam all the loops are double. Specification 20101/09, [Class 74 (ii), Knitting &c.], is referred to.
Patent GB-484909-A (GB)
Title: Improvements in or relating to method of coating metal bodies
IPC: C25D5/52
Filed: 1936-11-09
Abstract: 484,909. Electrodeposition of metals. STEVENS, A. H. (Strip Tin Plate Co.) Nov. 9, 1936, No. 30499. Drawings to Specification. [Class 41] A metal body is coated by electrodeposition with a metal melting at or below 452‹ C. and the coated body is immersed in a heated fluxing bath having a minimum fatty acid content of 1À5 per cent by weight to produce a bright finish thereon without the use of rollers or other mechanical polishing means. The metal body may be precoated by electrodeposition with a relatively high melting point metal. The bath used may comprise one of the following oils : palm, tung, cottonseed, castor, coconut, cod liver, menhaden, lard or mineral lubricating. The fatty acid content may be adjusted by adding palmitic, oleic or stearic acid. The low melting point metal may be lead, zinc, tin, bismuth, cadmium, tellurium, thallium or indium. The higher melting point metal may be copper, cobalt, tungsten, aluminium, gold or iron. An example describes depositing tin on nickel on steel strip ; the strip is dried by passing it between air jets, and fluxed in a heated palm oil bath ; a spangled surface may then be produced by cooling the tin coating slowly, or a mirror surface by cooling quickly, e.g. in a cooled palm oil bath. In another example, an alloy of lead and tin is deposited. Reference has been directed by the Comptroller to Specification 457,780.
Patent GB-1248201-A (GB)
Title: Electron microscopes
Inventor: COATES DOUGLAS GEORGE
IPC: H01J37/147
Filed: 1967-07-03
Abstract: 1,248,201. Electron microscopes. NATIONAL RESEARCH DEVELOPMENT CORP. 2 Oct., 1968 [3 July, 1967], No. 30551/67. Heading H1D. An electron microscope includes means for varying the angle between the electron beam and the normal to the specimen surface at a fixed point and means for collecting absorbed or back scattered electrons (e.g. reflected primary electrons or secondary electrons) such as collector 9 including collector electrode 11, scintillator 13 and photomultiplier 15 connected to amplifier 16 and/or a connection from stage 3 to amplifier 20 connected to grid 17 of C.R.T. 19 via double-throw switch 18. Deflector plates 25, 27 are connected to tilting means 21, 23 and the C.R.T. displays a graphical indication of the collector outputs at a plurality of different angles between the beam and specimen all at the same time and as a function of the angle. Angular variation may be by tilting the specimen and/or varying the beam direction by deflection coils. Electrode 11 is at a low voltage for reflected electron collection, and high voltage for secondary electron collection. The display may be photographed or a high persistence phosphor utilized.
Patent GB-1385789-A (GB)
Title: Windscreen wipers for vehicles
IPC: B60S1/34
Filed: 1972-06-30
Abstract: 1385789 Windscreen wipers ROBERT BOSCH GmbH 30 June 1972 [2 July 1971] 30656/72 Heading A4F [Also in Division F2] In a windscreen wiper comprising a wiper arm (14) Fig. 1 (not shown) which supports a wiper blade (15) and is mounted on a rotatably reciprocable spindle 13, the spindle 13 is located in a bush 12 for attachment to a body panel 10 of a vehicle and a flexible sealing element 19 for preventing ingress of dirt and water is fixed at one end to the bush 12 and at the other end to the spindle 13 or a member fixed thereto. The sealing element 19 which may be of elastic, lubricantresistant material may be of generally tubular shape, provided with transverse and longitudinal folds 25, (26) Fig. 3 (not shown) and provided with reinforcing ribs 20, 21 at its ends and stiffening ribs 24 spaced circumferentially and extending longitudinally of the element. The reinforcing ribs 20, 21 are force fitted into annular grooves 22, 23 provided respectively on the one hand in the bush 12 and on the other hand in the spindle 13 or a portion of the wiper arm Fig. 4 (not shown) attached to the spindle.
Patent GB-695110-A (GB)
Title: Improvements in or relating to building blocks
IPC: E04B2/42
Filed: 1949-11-29
Abstract: 695,110. Building blocks. HOPCHET, W. J. E. Nov. 29, 1949, No. 30666/49. Class 87 (i) An L-shaped building block comprises two prismatic portions 1, 2, of which one is twice the height of the .other, connected by a bridge piece 3 having concave upper and lower faces 4. The vertical surfaces 7 of the bridge piece may also be concave The prismatic portions 1, 2 may have horizontal apertures 8 and the bridge piece may have horizontal and/or vertical apertures 9, 10.
Patent GB-821341-A (GB)
Title: Improvements in or relating to sliding clasp fasteners and to methods of manufacturing the same
IPC: A44B19/40
Filed: 1956-10-09
Abstract: 821,341. Sliding clasp fasteners. RUHRMANN, J., and BAUENDAHL, H., [trading as RUHRMANN, I. J. [Firm of]]. Oct. 9, 1956 [Oct. 21, 1955; Sept. 4, 1956], No. 30712/56. Class 44 A sliding clasp fastener comprises a continuous filament 1 formed into a series of -U-shaped coupling links, the ends 11, 11' of each link being joined to the preceding and succeeding links respectively; a carrier tape 4 straddled by the U-shaped links; and a beading 3 extending along the outside of the links. As described, a metal or plastic filament is of rectangular section and is stitched to the carrier tape and beading. A second beading may be provided on the other side of the links, Fig. 2 (not shown); and the two beadings may be joined together by weft threads which pass between adjacent links, Fig. 3 (not shown). The links are deformed at 12 to provide locking elements.
Patent GB-1506730-A (GB)
Title: Electromagnetic lifting devices
IPC: B66C1/06
Filed: 1975-07-23
Abstract: 1506730 Magnetic lifting devices KOHAN SENDAN KIKAI KK 23 July 1975 [8 Aug 1974 7 Oct 1974 (2)] 30761/75 Heading H1P An electromagnetic lifting device (Fig. 1) for ferromagnetic material comprises a pole assembly 14 with plural pole members 12a to 12e excited by coils 16, 18 secured to the central pole 12c; the pole members being horseshoe shaped with open ends downwards and disposed adjacently for relative vertical movement; while on energization of the coils the respective pole faces exhibit opposed polarities. The pole members are supported from a frame 36 suspended by a crane hook 42 by a rope 38 secured to the frame at its ends and passing round plural pulleys alternately carried by the frame and by extensions of the several pole members; the individual members thus having latitude for relative vertical movement to accommodate to an irregular profile of the material 48 to be lifted, before energization of the coils (Fig. 2, not shown). In a modification (Figs. 3 to 5, not shown) the ends of the pulley rope are connected to the beam over compressible buffer springs to facilitate engagement of flexible ferromagnetic loads and the excitation coils are enclosed in a casing carried from the beam by dependent struts; which also carry stops restricting vertical movement of the pole members. In a further modification (Figs. 6, 7, not shown) an assembly of horseshoe shaped pole members, surrounded by respective energization coils suspended by struts are connected to the beam for individual relative displacement by respective suspension rods, one end of which is pivotally connected to a bracket of a pole member and the other end of which passes through an aperture of the beam. Two adjacent coil springs surround each rod confined at its upper end by a seating and a restraining nut, while further seatings is provided on the beam and intermediately of the springs. Collars surround the springs to limit compressive deflection. Single or plural springs may be used.
Patent GB-1508813-A (GB)
Title: Process and device for the manufacture of polymer dispersions with low monomer content
IPC: C08F6/00
Filed: 1975-07-23
Abstract: Monomers are continuously removed from polymer dispersions prepared by emulsion or suspension polymerisation of the monomer(s) in aqueous liquor. After the polymerisation has ended, the polymer batch is let down (depressurised) and the gaseous products are condensed and discharged. The heated polymer dispersion is sprayed radially in the form of a hollow cone or in the form of a disc of droplets not more than 6 mm in diameter in an upright vessel against the wall thereof, separated there and collected in the lower part of the vessel with gaseous substances being withdrawn from the spraying apparatus above the point of exit of the dispersion.
Patent GB-337174-A (GB)
Title: Ventilated corrugated roofing sheets
IPC: E04D13/17
Filed: 1929-08-26
Abstract: 337,174. Ogale, S. P. Aug. 25, 1928, [Convention date]. Roofing. - A corrugated roofing sheet is provided with ventilating slits A along the sides of the corrugations C. The slits are stamped out, the material above the slits being raised to form hoods E.
Patent GB-164056-A (GB)
Title: Improvements in or relating to capped armour piercing projectiles
IPC: F42B10/46
Filed: 1919-12-09
Abstract: 164,056. Hadfield, Sir R. A., Jack, A. G. M., and Clerke, A. B. H. Dec. 9, 1919. Projectiles.-Consists in a cap for armourpiercing projectiles having its outline in axial section formed mainly of two arcs of about seven calibres or more in radius struck from centres situated at a distance of not less than about three-fourths of the calibre behind the transverse plane of the "bourelet,'' and so placed that, if produced, the arcs would pass through the forward end of the cylindrical surface of the projectile. In the form shown, the cap comprises a solid part a, and a hollow part e having a blunt tip e<1>, the two arcs of the combined surface in the axial section shown being struck with a radius of seven calibres from centres in a transverse plane AA situated at a distance of 0.775 of the calibre behind the transverse plane BB of the " bourelet " b. The maximum diameter of the cap is not less than 98 per cent of the calibre of the projectile. The arcs n of the head of the projectile are 1.64 calibres in radius struck from centres in a transverse plane CC about 0.093 of the calibre behind the plane BB. The nose of the cap a is formed of two arcs having a radius of about 0.57 of the calibre of the projectile, and its tip a<1> may have a much smaller radius. The surface of the hollow fore part e may be conical.
Patent GB-646996-A (GB)
Title: Improvements in violins, viols and the like
IPC: G10D3/04
Filed: 1947-11-24
Abstract: 646,996. Violins &c. HARVEY, L. J. T. Nov. 24, 1947, No. 31033. Convention date, Dec. 19, 1946. [Class 88 (ii)] A violin or the like is provided with internal longitudinal struts to prevent distortion due to the tension of the strings. Specifications 4377/11 and 112,469, [both in Class 88 (ii)], are referred to.
Patent GB-1513417-A (GB)
Title: Pressure fluid actuated rapid closure and non-return valve for steam and gas turbines
IPC: F01D21/00
Filed: 1975-07-24
Abstract: 1513417 Fluid-pressure servomotor systems AEG-KANIS TURBINENFABRIK GmbH 24 July 1975 [25 July 1974] 31034/76 Heading G3P [Also in Division F2]  A rapid closure valve for the output of a steam or gas turbine, comprises an actuating piston 5 which freely supports the valve closure element 7, 28 and is responsive to the pressure in a chamber 17 as controlled by an auxiliary two-position valve 11. When, in use, a certain minimum output of the associated turbine is exceeded an hydraulic servopiston 10 moves the valve 11 into a position in which it opens a vent port 13, whereby the chamber 17 is vented and the piston 5 is raised by main flow pressure until its end 15 sealingly abuts seating 18. The valve closure element 7, 28 can then open by amounts corresponding to the degree the differential pressure force acting thereacross exceeds the weight of the element. Movement of the valve 11 to the position shown permits the chamber 17 to be re-charged with pressure fluid from the main flow via passage 21 and thereby cause the piston 5 to move downwardly to close the element 7, 28. The valve can thereafter function as a pressure release valve. In an alternative embodiment, Fig. 2 (not shown), the passage 21 communicates with the main flow-path at a location upstream of the closure element 7, 28.
Patent GB-1402013-A (GB)
Title: Porous electrically conductive bodies and methods of making the same
IPC: H05B3/14
Filed: 1972-07-04
Abstract: 1402013 Coating fibres with metal SCHLADITZ-WHISKERS AG 4 July 1972 [7 July 1971] 31230/72 Heading C7F [Also in Division H5] Discs or plates of fibres of e.g. glass, quartz or carbon are pressed together between electrodes, and the fibres heated by direct passage of current therethrough, whilst passing metal compound vapour therethrough which decomposes to deposit metal on the fibres. The compound may be a carbonyl of e.g. Fe, Cr, Ni, W or Mo or Pt acetyl acetonate, Pt carbonyl chlorides or dicumene or dibenzene Cr.
Patent GB-746198-A (GB)
Title: Manufacture of highly pure alcohol from fermentation alcohol by distillation
IPC: B01D3/00
Filed: 1953-11-11
Abstract: <PICT:0746198/III/1> Fermentation alcohol is purified by submitting it to distillation and contacting the vapours with a countercurrent stream of water in the distilling zone of a fractionating column, submitting vapours obtained at the head of the distilling zone to rectification to separate volatile impurities as an overhead fraction from the rectification zone, passing the bottoms from the rectification zone into a settling zone, introducing hot water into the settling zone thereby causing separation of fusel oil as an upper layer over a lower layer of aqueous liquid, withdrawing the fusel oil from the system, introducing the aqueous liquid into the distilling zone to form the down-flowing stream of water therein, and withdrawing purified aqueous alcohol from the base of the fractionating column.  In the apparatus shown, the settling zone is a decanting plate 2 disposed at the head of the extractive distillation column 1.  Impure alcohol containing 80 per cent Et OH is introduced (1250 kg. per hour) through pipe 3 into column 1. Hot water, constituted by spent wash from the foot of a rectifying column (not shown), is fed at 8000 litres per hour through pipe 4 on to plate 2. The lower layer of aqueous liquid which forms on plate 2 overflows on to the plate below.  The vapours passing through the chimney of plate 2 are introduced into th lower part of column 5 which has from five to ten plates. The vapours leaving the top of column 5 are condensed in condenser 6.  The condensate is very largely made up of aldehyde and ester impurities.  Part of the condensate (2.9 kg. per hour) is withdrawn through pipe 7, and the remainder is refluxed to the top of column 5.  The liquid flowing from the base of column 5 through pipe 8 is introduced on to decanting plate 2 together with the hot water. The oily, upper layer forming on plate 2 is withdrawn through pipe 9 at 3.7 kg. per hour.  The pure aqueous alcohol flowing from the base of column 1 through pipe 10 is concentrated in a rectifying column; and the spent wash is recycled to pipe 4. The process may also be used for the purification of dilute alcoholic liquors, such as fermented worts.
Patent GB-359706-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B9/34
Filed: 1930-10-18
Abstract: 359,706. Circular knitting-machines. GIBSON & SON, Ltd., W., Thurland Street, Nottingham, and SIMPSON, H. W., 30, Lime Grove, Long Eaton, Derbyshire. Oct. 18, 1930, No. 31254. [Class 74 (ii).] A circular machine is provided with means for selecting one or more of a number of threads and feeding the selected thread or threads to the needles with another or basic thread, and means for changing at will the relative positions of the threads fed simultaneously to the needles. The selection of the thread feeders 3, 4 for cooperation with the basic thread 2 is obtained by selector wheels 30, 31 which are intermittently rotated by a clawker 39 and ratchet wheel 41 ; the clawker 39 can be held in operative position by a pin 54 upon a plate 53 controlled by stops 44a on a pattern chain 44. The selector wheels 30, 31 act upon sliders 35, 36 arranged behind the feeders 3, 4. The reversal of the threads 2, 3 or 4 is effected by levers 28, 29 extending beneath the feeders, the lever 29 extending beneath the two feeders 3, 4. The levers 28, 29 are arranged in a V-slot in a sliding member 25 controlled by stops on a pattern drum 24, so that upon endwise movement of the member 25 the levers 28, 29 are moved in opposite directions. The member 25 is mounted with a roller 22 for axial movement with respect to the pattern drum 24 so that it can be controlled by the stops in any of a number of rows of stops upon the drum. To ensure that a newly-fed thread is taken by the correct needle a tongue 69 having a slot 69b arranged as shown in Fig. 5 is provided to co-operate with the trapper 66. An outgoing thread is wrapped round a substantially rectangular block 71, passes into a slot 64a in the trapper plate 64, and is received by the spring-pressed trapper 66 and the tongue 69. A second block 72, having one face bevelled is provided for holding a displaced thread during reciprocatory knitting. Damage of the needle latches during reciprocatory knitting- is prevented by providing within the latch ring 73 a rotatable ring 74 controlled by a stop 57b on the main pattern drum 57 and having a portion 74a for closing the thread feeding throat 70. A slidably mounted feed cam having a horizontal lower edge ending in a V-portion is provided for maintaining the needles in fully raised position for a longer period than usual, so that the thread is taken more readily by a predetermined needle. During circular knitting, the feed cam is moved so that the V- portion forms a continuation of the knitting cam; during reciprocatory knitting the feed cam is moved away from the knitting cam so that the needles can pass through the cam system in both directions.
Patent GB-1407630-A (GB)
Title: Oil wells
IPC: E21B23/00
Filed: 1973-06-30
Abstract: 1407630 Wells &c HEAVY OIL PRODUCERS SERVICES INC 30 June 1973 31271/73 Heading E1F A tool for use in an oil well having a casing (14), Fig I (not shown), a production tubing (12), a reciprocable plunger-type pump (18) in the lower portion of the production tubing, a packer (98) between the tubing and casing above the pump, and a pump rod string 16 reciprocable in the tubing for operating the pump, comprises a tubing assembly 20, 34, 40 and 24 for incorporation into the production tubing and including a pump rod pack-off sub 52, threaded means 66 releasably securing the sub 52 to the tubing assembly, and retrieving means 70 for incorporation into the pump rod string 16 and including threaded means 68 for engaging the sub 52, releasing the sub from the tubing assembly and removing the sub from the tubing assembly and production tubing without pulling to the production tubing from the casing. The lower end of the sub 52 is provided with a right-hand internal thread, and a left-hand external thread 66 which provides the releasable attachment of the sub with the tubing assembly. To remove the packing sub 52. pump rod 16 and pump plunger, the. pump rod is risen and rotated until the threaded portion 68 of the retrieving means 70 is fully received within the lower end of the sub, and further rotation causes the left-hand threaded portions 66 between the sub 52 and tubing assembly to dis-engage, thereafter the sub 52, rod 16 and pump plunger can be withdrawn. The tubing assembly includes a pack-off 46. Adjacent the. lower end of the tool is provided a production sub 84 with check valves 88, 96, the sub 84 providing communication between the production tubing and the surrounding annulus (92) defined by the casing (14). A quantity of lightweight fluid is disposed in the production tubing (12) above the sub 52 for lubricating the pump rod during reciprocation A sub 100 having a pressure-operated valve 108 is provided for removal of the fluid from the production tubing if necessary.
Patent GB-254350-A (GB)
Title: Improvements in or relating to the finishing and colouring of leather
IPC: D06P1/00
Filed: 1924-12-31
Abstract: 254,350. Lamb, M. C., and Spence & Sons, Ltd., P. Dec. 31, 1924. Lakes.-Leather is finished or coloured by applying to its surface a paint or dope containing a titanium tannate lake; mineral pigments, such as ochres, umbers, or clays, or basic or other dyestuffs, may be added.
Patent GB-1012408-A (GB)
Title: Method and apparatus for dispensing fermented beverages
Inventor: NICKERSON PRESCOTT EUGENE
IPC: B67D1/04
Filed: 1963-08-09
Abstract: 1,012,408. Dispensing beverages. CANADIAN BREWERIES Ltd. Aug. 9, 1963, No. 31463/63. Heading A4T. In a method and device for dispensing beverage, e.g. stout, from a store 10, a vent valve 20 is opened to allow dispensing directly from vessel 14 under gravity, or low pressure air or carbon dioxide acting through reducing valve 42 from container 40 to force relatively flat stout through check valve 16 into conditioning vessel 14 until its level is about one inch from the top after which valve 20 is closed. Valves 28, 29 are then opened to pass carbon dioxide in 26 and an inert gas, e.g. nitrogen, in 27 as fine bubbles through a porous head 22 to condition the stout until the pressure guage 30 indicates about 100 p.s.i. The conditioned stout is dispensed through valve 34 under a controlled pressure drop until a fob is produced in the container after which valve 34 is closed and valve 38 opened to dispense flat stout directly from store.