baber/WOPTO huggingface dataset:
Patent GB-510389-A (GB)
Title: Process for providing pictorial patterns with a half-tone screening
IPC: G03F5/00
Filed: 1938-09-01
Abstract: 510,389. Photo - - mechanical printing rollers. HEBERLEIN & CO., AKT.-GES. Sept. 1, 1938, No. 25607. Convention date, Oct. 28, 1937. [Class 98 (ii)] In preparing rollers for printing textiles, pictorial patterns showing a grain effect are produced by transferring the pattern to a paper having a grained surface, shading to produce a half-tone screening, copying the resulting picture with intensified contrasts, and printing this photo-mechanically on the roller surface. The picture may be recopied several times, The original may be transferred by means of tracing paper to a grained paper, e.g., baryta paper and shaded with pencils or charcoal, the fineness of the grain being dependent on the hardness and the size of the bearing surface of the pencil used. The result is photographed and may be copied in a step-and-repeat printing machine 'to produce a repeat pattern. In the case of coloured patterns, separate patterns may be used for each colour. Instead of working on a white paper with a black medium, a white medium such as chalk may be used on a black paper.
Patent GB-410666-A (GB)
Title: Improvements in and relating to electric discharge tubes
IPC: H01J19/42
Filed: 1933-09-15
Abstract: 410,666. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Allgemeine Elektricitõts Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Sept. 15, 1933, No. 25620. Convention date, May 4. Drawings to Specification. [Class 39 (i).] A mica insulating and separating member for the electrodes has its surface lying between points between which a leakage current may take place scratched in a direction at right angles to the line joining these points. According to the Specification as open to inspection under Sect. 91, the insulators may be roughened, e.g. by sandblasting. This subjectmatter does not appear in the Specification as accepted.
Patent GB-600734-A (GB)
Title: Improvements in or relating to machines for removing the tops of growing root crops
IPC: A01D23/06
Filed: 1944-12-21
Abstract: 600,734. Root crop topping machines. BULLOCK, PARSONS, & CO., Ltd., and BULLOCK, A. S. Dec. 21, 1944, No. 25635. [Class 6(iii)] A machine for topping root crops comprises a bell-mouthed hollow shoe 1, its undersurface being adapted to ride on the ground whilst the top portion is formed with an inclined plane 4 on either side so that as the machine is drawn forward the nose of the shoe passes underneath the foliage, subsequently lifting said foliage on the inclined planes to an upright position, whilst the bell mouth of the shoe is centering itself on the shoulder of the root, a horizontally rotating or reciprocating knife 7 within the shoe, and a vertically rotating knife or knives 8 for milling off the shoulder to a predetermined extent. The severed foliage passes along a shoot 11 assisted by a spinner 12 to a suitable receptacle 13, the milled off root shoulders being collected in a box 10. The power drive for the knives 7 and 8 may be derived from the axle 14 of the ground wheel or a suitable power device. The axle carries a bevel gear 15 which through several gears drives a chainwheel 23 and so the knives 8. An extension of a shaft has a system of bevel gears driving a chainwheel 29 which drives the knives 7. Specification 600,735 is referred to.
Patent GB-1069242-A (GB)
Title: Alkylation of aromatic compounds in the presence of an alumino-silicate catalyst
Inventor: WISE JOHN JAMES
IPC: C07C2/66
Filed: 1964-06-22
Abstract: A process for producing alkylated organic compounds comprises effecting reaction of an alkylating agent and an aromatic hydrocarbon, or aromatic hydrocarbon containing a nonpolar substituent, at a temperature not in excess of 600 DEG  F., in the presence of a superactive catalyst comprising a base-exchanged crystalline aluminosilicate having a residual sodium content not greater than 6% by weight of the dry aluminosilicate and a pore size of 6 to 15 Angstrom units; said catalyst having an activity constant above 10.  Cations present in the catalysts used are rare earth metals, hydrogen or mixtures thereof.  Reaction preferably takes place at 100 DEG  to 600 DEG  F. and aromatic hydrocarbons used are benzenes, naphthalenes, phenanthrenes and anthracenes and alkylating agents used are C2-C20 olefines, alkyl halides or aliphatic alcohols containing 1 to 20 carbon atoms in the alkyl group and the molar ratio organic hydrocarbon: alkylating agent is preferably at least 3:1.  The reaction is preferably carried out under sufficient pressure to maintain the organic hydrocarbon in the liquid phase and the organic hydrocarbon may be allowed to saturate the catalyst before the alkylating agent is added.  The catalyst may be combined with conventional porous adsorbents, carriers and supports.ALSO:Base-exchanged crystalline aluminosilicates having a residual sodium content not greater than 6% by weight of the dry aluminosilicate, a pore size of 6 to 15 Angstrom units and a catalyst activity constant above 10 are prepared by conventional treatments involving partial replacement of sodium ions by rare earth metal ions and hydrogen ions.  Zeolite X is the preferred aluminosilicate.
Patent GB-890613-A (GB)
Title: Process for the production of a wear- and bend resisting eutectic or hypereutectic cast iron of needle-shaped, intermediate structure
Inventor: RUFF WOLFRAM
IPC: C23C8/34
Filed: 1958-08-12
Abstract: A process for producing wear-resistant eutectic or hypereutectic cast iron which has an intermediate needle-shaped crystal structure and incorporates fine eutectic primary graphite comprises heat treating iron having 3,1-3,8%C. and 2,5-3,6% Si at a eutectic or hypereutectic saturation value of 1,0-1,1 at a temperature of at least 120 DEG C. above the equilibrium temperature and the quenching at 300-425 DEG C. The eutectic or hypereutectic saturation value is determined from the formula <FORM:0890613/II/1> After quenching, the iron may be tempered at 450-500 DEG C.  The iron may also contain 0,3-0,7% P.  In a modification an iron containing 0,4-1,6% Mo and 0,25 (max.) Cr may be quenched at 550-650 DEG C. without subsequent tempering.  The castings, e.g. piston rings, may be nitrided or given a surface oxidising treatment.
Patent GB-261163-A (GB)
Title: Improvements in or relating to means for supplying predetermined quantities of fluids
IPC: G01F11/44
Filed: 1925-10-17
Abstract: 261,163. Chittenden & Simmons, Ltd., and Gunnell, W. B. Oct. 17, 1925. Fixed - chamber apparatus, varying quantity measured in.- Apparatus for delivering measured quantities o.f fluids, primarily water for use in concrete mixers, but not excluding heavy gases or vapour, comprises a measuring-vessel 2 with a delivery pipe 4, 6 connected to it and containing a telescopic outlet pipe 12, which may be adjusted so as to vary the quantity delivered. The vessel 2 is filled from a tank 1, the water entering by the cock 7 until the float 16 closes the air vent 18. The tube 12 is then adjusted by the graduated rod 10, on which is an index 14, and the cock 7 rotated so as to empty the vessel 2 down to the upper end of the pipe 12. A bypass 19 with a cock 20 is fitted.
Patent GB-152209-A (GB)
Title: Improvements in and relating to carburettors for internal combustion engines
IPC: F02M19/03
Filed: 1919-10-23
Abstract: 152,209. Elliott, E. C. Oct. 23, 1919. Spray carburettors.-An horizontally-disposed fixed cylinder b is placed across the bore of the body a of the carburettor so as to leave a free passage a<1> around the cylinder, and encloses a rotatable cylinder c, both cylinders being ported at b<1>; c<1>, b<2>, c<2>. A perforated fuel pipe d is mounted along the axis of the cylinders and communicates with the float chamber through a passage o controlled by an adjustable plug cock f. The space in the adjustable cylinder c around the fuel pipe is loosely packed with wire gauze g or the like. The cylinder c may be rotated with the plug f and pipe d, but the pipe, which is provided with a nut m and spring washer n. may be merely supported in the plug f and remain stationary. The adjustable cylinder c may be mounted to rotate independently of the plug f. The axis of the fuel pipe is approximately at the level of the fuel in the float chamber. Venturi tubes v are placed above and below the cylinders. and a valve is provided in the air inlet.
Patent GB-916677-A (GB)
Title: Digestion apparatus and method
IPC: G01N35/08
Filed: 1960-07-27
Abstract: A stream of liquid is heated by continuously introducing into one end (30) of a helical groove (28) in a rotary cylindrical reactor (24) mounted horizontally for rotation about its longitudinal axis, the heated liquid being continuously discharged from the other end (32) of said groove.  As shown in the Figures, to which the above numerals relate, gases resulting from the treatment are discharged through line 94 and the apparatus preferably also comprises an overflow outlet 100.  The reactor is supported (Fig. 2) by resilient washers 124 in rollers 126 cooperating with rollers 128 on a driven shaft 132.  The reactor is heated by electrical resistance elements 116 in an upper and a lower section of a housing 26.  <PICT:0916677/III/1> <PICT:0916677/III/2> <PICT:0916677/III/3> Fig. 1 illustrates the use of the reactor in relation to a Kjeldahl type of determination for nitrogen.  Samples to be analysed are sequentially withdrawn from receptacles 150 by means of an off-take tube 152 connected to flexible tube 12 of proportioning pump 10.  An acid such as sulphuric or a mixture of sulphuric and phosphoric acids is passed through tube 14 of said pump and air or inert gas through tube 16 to segment the mixed stream passing to mixing coil 20.  The mixture then passes to the reactor 24, gases evolved are removed by means of aspirator 96, and the products pass to cooling coil 38.  Any overflow liquids pass to cooling coil 102 and after dilution with water from tubes 40 and 104 are removed from the system through line 106 and pipe 108.  The proportion to be tested is diluted with water and then passes through line 42 to pump tube 44, is further diluted with water from tube 46, mixed in coil 50 and an aliquot sample taken in device 54 while the remainder is vented.  The sample stream passes through line 62 and pump tube 66 to junction 72 where an alkali such as sodium hydroxide is added together with air to segment the liquid stream.  Ammonia is produced and dissolves in the liquid and the mixture passes through line 76 to mixer 78 after the addition of alkaline phenol. Thereafter sodium hypochlorite is added through line 82, the components mixed in coil 84, passed through heating bath 86 at 95 DEG C., cooled at 88 and passed to recording colorimeter 90, 92. Specifications 817,070, 834,635 and 863,910 are referred to.
Patent GB-588158-A (GB)
Title: Improvements in or relating to a copyholder for use with photographic apparatus
IPC: G03B27/62
Filed: 1944-12-29
Abstract: 588,158. Photographic copy - holders. KODAK, Ltd. Dec. 29, 1944, No. 26107. Convention date, Feb. 3.- [Class 98 (i)] In a copy-holder of the kind comprising a pair of juxtaposed, parallel copy-receiving supports connected together letter-balance fashion by one or a pair of parallel motion linkages which permit relative vertical movement of the supports, the assembly is guided for vertical movement as a whole in a surrounding casing and is frictionally supported at the central points of the linkages in the bight of cable means anchored at one end to the casing, and connected at the other to. means operable to raise or lower the assembly in its vertical guideways. In the raised position of the assembly, the supports may press the copy material against a transparent hinged platen and they may carry straps for securing the covers of an open book laid with one cover on each support. As shown, the casing is of box form with feet 34 and carrying handles 15. A platen 17, as of glass, removably or pivotally mounted on the casing, is urged open by springs 30 attached between casing eyelets 32 and side members 22 fixed to the arms of a U-shaped member extending along the sides and front of the platen which may be fastened by a spring-latch engaging catch 27 on the front wall 10 of the casing. The copy supports 35 and 36, preferably covered by a rubber mat 37 to support the back of a book 38 whose covers 39, 40 are passed under straps 46 on the supports, are mounted on bars 41, 44 having depending ends which are pivotally linked by pairs of strips, one of which is shown at 52, 53. The parallelogram linkages so formed are carried by rods 58 and 60 which pass freely through the centres of the links and are provided at each end with rollers which engage the guideways 14. The copy supports are thus maintained horizontal and substantially parallel to each other. A slightly resilient cable 65 anchored at 68 to the side wall 12 is looped at least once around a pulley 63 fixed on the link 53, and is secured at its other end in a recess in the periphery of a pulley 66 mounted on a rod 67 journalled in the walls 10, 11. A similarly mounted cable 65<1> is provided on the opposite side of the apparatus. The shaft 67 is rotatable by an external knob 73 connected thereto through worm gearing 74, 75 in order to actuate the two cables and raise or lower the copy receiving assembly towards or away from the platen 17, and the assembly will remain in'any position to which it is adjusted by reason of the friction in the worm gearing.
Patent GB-484197-A (GB)
Title: Improvements in and relating to the production of granular active carbon
IPC: C01B31/12
Filed: 1936-09-25
Abstract: Active carbon is obtained by treating carbonaceous material such as wood, wood charcoal, coke, coal &c. in coarse granular form with a solution of an activating chemical such as a salt or an acid, and then heating the treated carbonaceous material in admixture with a substantially equal or greater quantity of a mixture of substances which on heating to the activating temperature react together to give a non-oxidizing gas.  The mixture generating the non-oxidizing gas may be pulverized and preformed into aggregates with the granular carbonaceous material by means of a binder.  On heating, the carbonaceous material is subjected simultaneously to the action of the chemical and gaseous activating agents, and the product is in granular form, retaining the structure of the original carbonaceous material.  According to an example, 600 kgms. of ground potassium sulphate and 130 kgms. of ground anthracite are mixed with 200 kgms. of wood charcoal in grains of 1-2 mm. diameter which has been impregnated with a solution of potassium bisulphate.  The mixture is heated under reducing conditions, and the hot carbon-monoxide and -dioxide containing gases are compelled to flow through the granules of impregnated charcoal.  The potassium sulphide made by separated, and the carbon grains washed and dried. Specifications 133,759 and 167,195, [both in Class 55 (i)], are referred to.
Patent GB-1330253-A (GB)
Title: Olefin copolymerization
IPC: C08F10/00
Filed: 1971-04-19
Abstract: 1330253 Solvent recovery from olefin copolymerization MONTECATINI EDISON SpA 19 April 1971 [13 April 1970] 26143/71 Heading C3P Hydrocarbon polymerization medium is recovered from elastomeric olefin copolymers by a process which comprises stripping at 20 to 100 p.s.i.a. pressure at a temperature above the dew point of the hydrocarbon at 60‹ to 120‹ C. The copolymers may be derived from ethylene, a C 3-8  α-olefin and a polyene, e.g. 1,4-hexadiene, dicyclopentadiene, butadiene, a norbornene, 1,4,9-decatriene, methylheptadiene, cyclooctadiene, cyclodecadiene, 1,4-pentadiene and methyl tetrahydroindene. Specified media are C 4-10  alkanes, benzene, toluene and cyclohexane. Polymerization may be effected in the presence of a titanium or vanadium compound, an alkyl aluminium compound and optionally hydrogen or diethylzinc. In examples medium is recovered from continuous copolymerization of ethylene, propylene and 5-ethylidene-2-norbornene in the presence of vanadium trisacetylacetonate, diisobutyl aluminium chloride and diethyl zinc carried out in (1) benzene and propane and (2 and 3) benzene.
Patent GB-1217275-A (GB)
Title: Gas turbine engine axial flow multi-stage compressor
Inventor: PETRIE JAMES ALEXANDER
IPC: F01D5/06
Filed: 1968-05-31
Abstract: 1,217,275. Compressor rotors. ROLLS ROYCE Ltd. May 22, 1969 [May 31, 1968], No. 26169/68. Heading F1T. A multi-stage axial flow compressor rotor for a gas turbine engine comprises a series of angularly spaced apart blade assemblies, each assembly consisting of a root mounted in a slot in a rotor disc and a platform radially outwardly of the root carrying a plurality of blades, the axially consecutive platforms contacting each other to form a drum-like structure. In one arrangement Figs. 1, 2, the compressor rotor comprises discs 11, 12 carried by a shaft 13 and each provided with circumferentially spaced blade assemblies 14. Each of the latter comprises two circumferentially adjacent platforms 15, 16 which abut and are connected by ribs 17 to root portions 20, 21 mounted in a common axially extending slot 22 in the respective rotor disc 11, 12. The platform 15 has two blades 23, 24 integral therewith and the platform 16 integral blades 25, 26. Thus each platform 15, 16 carries blades of two stages, the axially adjacent edges of respective platforms abutting at 27 to form a drum-like structure. A similar arrangement is illustrated in Figs. 6 to 9 (not shown). In a modification. Fig. 4, each of the rotor discs (31, 32), Fig. 3 (not shown), has angularly spaced blade assemblies 34 each having four blades 35 integral with a common platform 36 of the same stage. Each platform 36 is connected to a root portion 40 by ribs 41. As before, axially adjacent platforms 36 abut to form a drum-like structure. In a further modification, each platform may carry rotor blades of the same and different stages.
Patent GB-465332-A (GB)
Title: Indirectly heated cathode for cathode ray tubes
IPC: H01J29/48
Filed: 1936-09-28
Abstract: 465,332. Cathode-ray tubes. VERE INIGTE GLUHLAMPEN UND ELEKTRIZITATS AKT.-GES. Sept. 28, 1936, No. 26245. Convention date, Oct. 1, 1935. [Class 39 (i)] An indirectly - heated cathode comprises an apertured plate resting directly upon the emissive surface of the cathode. As shown, a flat box-shaped nickel cathode 1 contains a zigzag alundum-coated heater 5 and carries an emissive layer upon which is laid the plate 3 which has an aperture 4 and is welded at its edges to the cathode 1. Supporting bands 6 of nickel are provided. The adjacent accelerating and concentrating electrodes in an oscillograph may be parallel to, and the neighbouring one close to, the cathode surface.
Patent GB-322795-A (GB)
Title: Improvements in or relating to automatic or semi-automatic exchange systems
IPC: H04Q3/00
Filed: 1928-09-13
Abstract: 322,795. Standard Telephones & Cables, Ltd., and Wright, E. P. G. Sept. 13, 1928. Drawings to Specification. Automatic exchange systems. - A group of single-motion connectors controlled by a single marking switch is divided into two sub-groups each associated in multiple with a common relay group. A connector on being taken into use is connected to the marking switch through the appropriate relay group, and when connection has been made with the wanted line, the marking switch is released, but the relay group remains in use to control ringing or to give a busy signal, the marking switch being available over the other relay group for use in controlling a connector of the other sub-group. The invention is described with reference to the system described in Specification 322,241.
Patent GB-299446-A (GB)
Title: Improvements in or relating to steering wheels
IPC: B62D1/08
Filed: 1928-09-13
Abstract: 299,446. Compagnie Franco-Americaine des Jantes en Bois. Oct. 27, 1927, [Convention date]. Hand-wheels. - Steering-wheels for motor vehicles &c. of the type in which each arm consists of two or more rods or wires 3, 3<1> of spring steel in tension has the arm covered by a wire, cord, or band 4 wound helically thereon with the turns in contact and with the ends secured or not secured to the rim 1 and hub 2 or welded or connected to the adjacent turns. Grooves facilitating hand grip are thus formed in the covering. The turns move freely during deformation of the arms. The covering is preferably a cord or band of material which is plastic when hot and becomes hardened and somewhat elastic on cooling.
Patent GB-1161176-A (GB)
Title: Process for Preparing 5-Alkylidene-Norbornenes
IPC: C07C5/25
Filed: 1967-06-07
Abstract: 1,161,176. 5-Alkylidene norbornenes. FARBWERKE HOECHST A.G. 7 June, .1967 [;7 June, 1966], No. 26366/67. Heading C5E. 5-alkylidene norbornenes having the formula where R 1 , R 2  and R 3  each represent a hydrogen atom or a C 1-6  alkyl group, are prepared by isomerization of the corresponding 5-alkenyl norbornenes at 20-275‹ C. in the presence of 0À001-2À5 mols. per mol. of 5-alkenyl norbornene of a catalyst comprising an alkali metal or an organo-alkali metallic compound. The catalyst is preferably Na, K or Na-K alloy (any of which may be supported, e.g. on Al 2 O 3  or K 2 CO 3 ), or a combination of Na, K or Na-K alloy with o-chlorotoluene, from which organometallic compound is produced in situ. The process may be carried, out in an inert solvent, and preferably under a nitrogen atmosphere with the exclusion of moisture Examples describe the preparation of 5-ethylidene norbornene from 5-vinyl norbornene, and of 5- isoprenylidene norbornene from 5-isopropenyl norbornene.
Patent GB-1337914-A (GB)
Title: Apparatus for machining the ends of tubes
IPC: B23B5/16
Filed: 1972-06-07
Abstract: 1337914 Machining tube ends VALLOUREC (USINES A TUBES DE LORRAINE-ESCAUT ET VALLOUREC REUNIES) 7 June 1972 [8 June 1971] 26432/72 Heading B3T Apparatus for machining the ends of tubes comprises a rotatable plate 1 on which are mounted tool carriers 4 and 5 for radial adjustment diametrically one on each side of the axis 2 of rotation of the plate, and two further tool supports 12 similarly positioned which are mounted on and pivotable about respective shafts 13a at right angles to the axis 2. The tool supports 12 carry roughing tools (not shown) and are pivotable on the shafts 13a between a first position in which the roughing tool is farthest from the surface of the plate 1 to a retracted position nearest the surface of the plate and behind the tool carrier 4 and 5 and in which the roughing tool is inoperative. The pivoting of the supports 12 is effected by fluid pressure means which is shown in the form of bellows 15 which are actuated to move a support into the first position and is subsequently actuated by a spring 20 to move the support into the retracted position. In operation the plate is rotated and displaced along the axis 2 by means (not shown) into an operative position adjacent a tube held stationary and coaxial with the axis 2 of the plate, the feed movement of the plate effecting engagement between selected tools on the plate to accurately machine the tube end.
Patent GB-502911-A (GB)
Title: Improvements in and relating to electric discharge lamps
IPC: H01J61/073
Filed: 1937-09-30
Abstract: 502,911. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd., BOURNE, H. K., and GILSON, C. Sept. 30, 1937, No. 26525. [Class 39 (i)] In an electric discharge lamp of the type in which the discharge takes place in a gas or vapour at a high current density and at a high pressure and the lamp includes main electrodes consisting of comparatively massive tungsten blocks and auxiliary electrodes of low work function which are electrically connected to the main electrodes, the tungsten blocks 3 are solid except for a narrow central hole, and have an auxiliary electrode consisting of a pellet 7 of emissive material inserted in the hole. The pellet may comprise a helix coated with the emissive material inserted in a hole in the main electrode. Hoods may be provided to collect the sputterings from the auxiliary electrodes.