baber/WOPTO huggingface dataset:
Patent GB-1395904-A (GB)
Title: Apparatus for use in measuring distances
IPC: G01B3/12
Filed: 1971-04-30
Abstract: 1395904 Distance measuring apparatus SMITHS INDUSTRIES Ltd 21 July 1972 [30 April 1971] 12305/71 Heading G1M Distance measuring apparatus comprises a spring steel strip 14, Figs. 1 and 3, fastened by screws 27 to a plate 25 spring adjustable on a further plate 24 mounted on the movable part of a machine tool e.g. a lathe saddle. A support surface 11, over which the distance measuring apparatus moves, is engaged by a roller 10 mounted on the shaft 12 of a transducer 13 and is pressed there-against by the strip 14 which adjusts the pressure of the roller, and the axis of the roller may be positioned to extend at right angles to the surface 11 by mounting the transducer 13 and roller shaft 12 on a plate 15 carried by the strip 14, which plate 15 may pivot about a screw 17 and be adjusted relative to the strip 14 by turning a screw 19 mounting a cam (21), Fig.2 (not shown). The roller 10, Figs. 4 and 5, comprises tubes, 33, 34 of tool steel and a middle tube 35, 36 of mild steel or brass which allows the roller to deform radially under pressure from the strip 14 and thus reduce its effective diameter and measurement error due to metal gathering.
Patent GB-981839-A (GB)
Title: Blade annuli for turbines and turbine-type rotary machines
IPC: F04D29/30
Filed: 1963-03-28
Abstract: 981,839. Turbine blade mounting. BMW TRIEBWERKBAU GESELLSCHAFT, m.b.H. March 28, 1963 [April 19, 1962], No. 12315/63. Heading FIT. A turbine or like machine blade annulus comprises hollow blades connected between axially spaced discs, the cross-section of each blade being stepped at its line of intersection with each disc to form flanges of reduced thickness which extend through corresponding recesses in the discs and are peened over on the outside of the discs. A hollow blade 1 made from strip material has flanges 5 of reduced thickness and is located between axially spaced discs 7, 8 in profiled recesses by peening over the flanges 5 on to the discs. In a modification each blade is precision cast.
Patent GB-1278015-A (GB)
Title: Method and means of making diamond heat sinks and heat sinks obtained by this method
IPC: H01L23/373
Filed: 1970-03-13
Abstract: 1278015 Severing D DRUKKER & ZN NV 13 March 1970 [13 March 1969] 12327/70 Heading B3D [Also in Division H1] Apparatus for sawing up slices cut from selected diamonds to form rectangular heat sink blocks for solid state devices includes a mounting member 8 to which the diamond slice 17 is removably secured, the mounting member 8 being adjustable between two mutually perpendicular positions to permit the diamond 17 to be sawn in both directions. A saw guide 14 situated above the mounted diamond 17 has a series of spaced slots 15 through which a diamond saw blade 16 may be successively inserted, clearance for the blade beneath the diamond 17 being provided by an array of slots in two mutually perpendicular directions in the upper face of the mounting member 8. A gang saw may alternatively be used, penetrating all the slots 15 simultaneously. Where it is desired to mount two or more devices on a single diamond heat sink, the slice 17 may be cut into larger pieces by only inserting the saw blade 16 into certain of the slots 15 and omitting other slots. The heat sink may be used for a transistor, Gunn diode, avalanche diode or solid state laser and preferably comprises a type IIa diamond block selected to have an infra-red transmission characteristic which remains substantially level or increases throughout the wavelength range from 7 to 8 Ám. Preferably the selected material also exhibits no internal strain variations extending over more than 0À1 mm as determined by birefringence. Diamonds thus selected are stated to have a particularly high and uniform thermal conductivity.
Patent GB-181914-A (GB)
Title: Improvements in or relating to variable speed hydraulic transmission apparatus
IPC: B60K17/10
Filed: 1921-04-29
Abstract: 181,914. Variable Speed Gear, Ltd., and Ingoldby, M. K. April 29, 1921. Automatic power control. - Variable-speed hydraulic transmission apparatus of the kind comprising a pump and a motor unit, one or both h being of variable stroke, is provided with means for opening a bypass between the pressure and suction pipes, or for retarding the vehicle by the application of a brake or by throttling the fluid circulation, whenever the motor unit over-runs the pump unit. In the first form, a by-pass valve D, Fig. 1, is opened by means of an arm d and a plunger E<1> in a cylinder E connected to the suction pipe C<1>. If the pump is capable of being reversed, a second plunger E<1x> is provided, together with a lever D<2> for moving the valve through a spring link F into position for the reverse drive. In the second form, a throttling valve G<2>, Fig. 2, or G<x> is operated through levers g<1>, g<1x >from the plungers E<1> or E<1x> and the lever D<2> operates cocks d<2>, d<2x> for controlling the admission of liquid to the cylinders; or a brake acting on the pump unit or part of the driven machine is actuated from the levers.
Patent GB-127247-A (GB)
Title: Improvements in Windows.
Inventor: WEBER JOSEPH
IPC: B60S1/02
Filed: 1919-05-16
Abstract: 127,247. Weber, J. May 18, 1918, [Convention date]. Windows, preventing condensation on; locomotive and like look-outs. -An undulating electrically conducting wire 2 is embedded in a glass window pane 1 for the purpose of electrically heating the pane and so melting any snow which may accumulate on the window of an eiectric car &c. and prevent the driver from seeing the track.
Patent GB-942205-A (GB)
Title: Improvements relating to rotary and percussive tools
IPC: B25D11/10
Filed: 1960-04-07
Abstract: 942,205. Percussive tools. RUBBERMAID The. April 7,1960 [April 16,1959], No. 12430/60. Heading B4C. A rotary percussive tool comprises a rotor mounted within a housing, a hammer movable axially of the rotor towards and away from an anvil, resilient means urging the hammer towards the anvil, and co-operating cam and cam follower, one mounted on the hammer and the other in the housing, the latter being retractable from a position producing reciprocation and rotation of the hammer to a position allowing rotation only. As shown, a motor casing 10 is connected to a housing 15, the motor 11 driving a drill rotor 17 threaded into a chuck 18. A hammer 45 surrounds a reduced diameter portion 19 of the rotor 17, a pair of flats 46 on the shaft engaging complementary flats on the hammer in such manner that the hammer rotates with the shaft but may reciprocate thereon. A spring 49 urges the hammer towards an anvil 48. A cam groove 55 on the hammer is engaged by a cam follower roller 60 mounted on the housing, the cam being of such shape that the hammer is moved against the spring pressure and then released suddenly to produce a blow on the anvil. The cam follower may be retracted out of the groove by rotation of a knob 67 which moves the cam follower against a spring 69. The tool steel 30 is retained in the chuck by frusto-conical portions 30 and dowels 32 acting on flats on the end of the steel.
Patent GB-508053-A (GB)
Title: Improvements in or relating to artificial fuel
IPC: C10L5/34
Filed: 1937-09-04
Abstract: 508,053. Composition fuel. WIL. LIAMS, H., and BENNETT, N. F. BETTE-. Sept. 24, 1937, No. 12486/38. Divided out of 508,000. [Class 50] Artificial fuel blocks comprising pulverized coal, coke breeze or anthracite mixed with oil and a binder are wrapped in waxed or glace paper, &c., forming an air-tight covering. A cylindrical block may be wrapped in a square piece of paper, the ends of which are sealed as by heat or by an adhesive or labels &c., preventing rapid escape of smoke and facilitating superficial carbonization. Reference has been directed by the Comptroller to Specifications 25814/13, 117,474, 230,252, [all in Class 50], and 413,077.
Patent GB-238615-A (GB)
Title: A method of manufacturing cellular blocks or material for building and other purposes
IPC: C04B38/00
Filed: 1924-05-21
Abstract: 238,615. Rogers, A. M. May 21, 1924. Making cellular bricks. - Cellular blocks a of cement, plaster, and like material having cavities b formed therein bv the incorporation or spherical or other particles of gelatinous material, or of ice or other volatile crystals that can be dispersed during the drying and setting process, have. the cavities distributed substantially evenly throughout the block by forming or supporting the particles of ice &c. upon carriers of string, wire or netting which may remain incorporated permanently in the completed block. Fig. 2 shows beads of ice c formed upon a netting; Fig. 2 shows the beads supported upon or between a pair of wire frames. The blocks are kept during initial setting at a temperature at or below 0‹ C. until sufficiently hard to avoid crumbling and are then set aside at a temperature a little above 0‹ C. Calcium chloride &c. may be added to the cement to assist rapid setting and to render the material waterproof.
Patent GB-107751-A (GB)
Title: Improvements in or relating to Sound Reproducing Machines.
IPC: G11B3/10
Filed: 1916-09-04
Abstract: 107,751. Compagnie Generale des Etablissements Pathe freres Phonographe et Cinematographe. July 5, 1916, [Convention date]. Tone-arms; tone-arm joints; cases with internal horns; tool-arms and mountings.-The tone-arm of a sound-reproducing machine is so mounted on its socket that it can be removed by lifting. The arm passes loosely through a vertical socket into the horn space, and a ring surrounding the socket supports the tone-arm by means of a bent plate spring. The outer end of the tone-arm, or the sound-box, may be fitted with junction tubes to permit the sound-box to be placed in position for playing vertical-cut or lateral-cut records. The downwardly-bent portion 5 of the tone-arm 1 projects loosely through a socket 8, and its lower curved end is cut off in a vertical plane, so that the sound waves are reflected off a back plate 15 and are amplified in the horn space formed by diverging walls 16 of thin wood. A bent plate spring 6 is secured to the tone-arm 1 and carries a ring 9 which loosely surrounds a flange 4 on the socket 8, the upper face of the flange being inclined. A screw 10 permits the position of the vertical portion 5 of the tone-arm to be adjusted relatively to the ring 9. When a record is being played, the sound-box 2 is slightly lifted by the stylus so that the ring 9 rests on, and turns around, the rear portion of the socket 8. To prevent shaking during transport, the ring 9 may be held down by a detachable screw 13. A rightangle junction tube may be attached either to the end of the tone-arm or to the back of the soundbox, to enable the sound-box to be placed with its diaphragm across or parallel with the tonearm axis, according to the type of record to be played. The Specification, as open to inspection under Sect. 91 (3) (a), describes also a sound-box by which both kinds of record may be played without adjustment, the stylus lever being mounted in a plane perpendicular to the diaphragm but slightly inclined to the vertical. The part 20 is slightly inclined to the diaphragm, and the stylusholder 19 has a greater inclination. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1530512-A (GB)
Title: Method of measuring the oil consumption of internal combustion engines
IPC: G01F9/00
Filed: 1976-03-29
Abstract: 1530512 Measuring oil consumption KERNFORSCHUNGSZENTRUM KARLSRUHE GmbH 29 March 1976 [11 April 1975] 12612/76 Heading G1B The oil consumption of an I.C.E. 7 equipped with an exhaust gas line 11 carrying the exhaust gas stream is estimated by labelling the oil in the engine sump 8 with a radio-active tracer e.g. tritium, taking at least one first sample from the stream at a point where the stream is carrying activity from the oil consumption in the engine only, adding to the gas stream labelled oil corresponding to the oil in the I.C.E. e.g. unused oil from sump 8 or fresh oil from an independent source and thereafter taking a second sample from the stream downstream of the point of oil addition and comparing the activity of the first and second samples. Section I of the exhaust line only carries activity from oil consumption in engine 7, Section II downstream of addition point 13 also contains oil of known radio-activity. First samples 3 may be taken upstream of addition point 13 but can be obtained downstream of point 13 but only prior to taking samples 4 and with the proviso that oil addition at 13 is made after first samples 3 are taken.
Patent GB-578764-A (GB)
Title: Improvements relating to combustion chambers for internal combustion turbines
IPC: F23R3/04
Filed: 1942-09-08
Abstract: 578,764. Gas turbines. ROVER CO., Ltd., and WILKS, M. C. Sept. 8, 1942, No. 12676. [Class 110 (iii)] Air is introduced to the combustion chamber of a gas turbine, for the purpose of stopping injurious solid pieces, through many perforations of small diameter, e.g., one eighth of an inch, or slits of an equal width.. In the form shown, fuel is admitted to the centre of a conical baffle 20 and air is admitted behind the baffle through perforations 19 in a conical end plate 11. Further air may enter through perforated insets 22, or groups of perforations 24 or slits 25 from an air jacket 17. The latter is closed at 26.
Patent GB-675816-A (GB)
Title: Improvements in or relating to the polymerisation of propylene and the polymers thus prepared
IPC: C07C2/18
Filed: 1950-05-22
Abstract: Propylene tetramer is prepared by catalytic polymerization of propylene and separation from the products of a tetramer fraction, a fraction comprising C8-C10 polymers which is recycled to the polymerizer, and a C4-C7 polymer fraction which is separately polymerized.  Propylenic gases may be treated in a first polymerizing zone, and the following fractions separated from the effluent: a normally gaseous fraction containing propylene and fractions predominating in C6 polymers, C9 polymers, and tetramer, respectively. The C6 fraction is treated in a second polymerizing zone to give tetramer, and the effluent is treated to separate a normally gaseous fraction containing any propylene, and C6, C9 and tetramer fractions.  The C6 fraction is recycled to said second zone, both the normally gaseous fractions and the C9 fractions from the products of both zones are recycled to the first zone, and propylene tetramer is separated from the tetramer fractions of both zones.  The ratio of recycled polymer to propylene in the first zone should be from about 1 : 5 to 14 : 1.  Solid phosphoric acid catalysts are used at 150-300 DEG  C., and 10-150 atmos.  A fractionator and flash drum may be used to p  separate the products into the desired fractions, e.g. a 60-125 DEG  C. fraction for feeding to the second polymerizer, and a 125-155 DEG  C. fraction for recycle.  Dimerization of C6 polymer in the second polymerizer may be effected with phosphoric acid catalyst at 150-300 DEG  C. and 10-100 atmos.  Other catalysts may be used, e.g. 67-75 per cent sulphuric acid at 50-90 DEG  C.  The product is fractionated, and tetramer fractions from both stages may be treated to separate a final product boiling at 180-265 DEG  C.  A plurality of chambers may be used in the first polymerizing zone with recycle of polymer to some only.  The effect of recycling various polymer fractions on tetramer production is illustrated and examples of reaction conditions for polymerization in the second zone with solid phosphoric acid and sulphuric acid are given.
Patent GB-731120-A (GB)
Title: Emulsification of bitumens
IPC: C08K5/09
Filed: 1953-05-07
Abstract: An unsaturated fatty acid is condensed in the presence of a catalyst with an olefinic C2-20 hydrocarbon.  Specified are: acids-oleic and those from linseed oil; hydrocarbons-di-iso butylene and light petroleum fractions rich in olefines; catalysts-chlorides of zinc, iron, aluminium, and boron fluoride as such or as an organic complex. The condensation product is added to bitumens, and the product is readily emulsifiable in aqueous media containing low concentrations of alkali hydroxide.ALSO:Difficulty emulsifiable bitumens are rendered more easily emulsifiable by the addition of 0.1 to 10 per cent of the product obtained by condensing an unsaturated fatty acid, e.g. oleic or those of linseed oil, with an olefinic C2 - 20 hydrocarbon, e.g. diisobutylene or light petroleum fractions, in the presence of a catalyst.  The mixture is emulsified in a solution containing 0.05-0.4 per cent of alkali hydroxide.ALSO:A minor proportion of the product obtained by condensing, in the presence of a catalyst, an unsaturated fatty acid with an olefinic C2-20 hydrocarbon is added to bitumen.  It is preferred that 0.1 to 10 per cent be added; that the acid has between 12 and 24 C. atoms, e.g. oleic acid or linseed oil fatty acids; that the hydrocarbon has between 4 and 20 C. atoms, e.g. di-isobutylene in light petroleum fractions and that the catalyst be a chloride of zinc, aluminium or iron, or boron fluoride, (alone or as an organic complex).
Patent GB-359915-A (GB)
Title: Improvements in and relating to methods of impregnating electric devices
IPC: H01B13/30
Filed: 1930-04-25
Abstract: 359,915. Electric insulation. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Clark, F. M.; 12, Concord Parkway, Pittsfield, Massachusetts, U.S.A.) April 25, 1930, No. 12804. Convention date, April 25, 1929. Void [Published under Sect. 91 of the Acts]. [Class 140.] Condensers, transformers, cables or other electrical devices are impregnated with mineral wax or oil by plunging the device into a bath of oil which is heated to a temperature above 150‹ C. After several hours in the bath the device is quickly transferred to a second oil bath at materially lower temperature. In the embodiment, baskets 1 .. 4, loaded with condensers, are placed on a platform 5, and are transferred by an arm 7 to a vertically movable holder 8 which is lowered to immerse the condensers in an oil bath 9. The holder 8 is driven by a rack 10 and pinion 11 from a reciprocating rod 12 which is moved by a hydraulic cylinder 36. After several hours, the condensers are transferred to a holder 13, e.g. by the push of another set of entering baskets, which lowers the baskets into a tank 14 containing oil at lower temperature. In the case of mineral wax dielectric, the temperature is stated to be 80-90‹ C. After several hours the condensers are transferred to a holder 15 which either passes them to a tank 16 of mineral oil at room temperature or permits them to cool in air or other gas. The condensers are drained and transferred to an unloading platform 17. Automatic electric devices control the mechanism. A drum 22 formed with an electric contact strip 23 is driven by an electric motor 26 through gearing, the drum 22 making a complete revolution in four hours. The strip 23 comprises bands a, b and a bar member c, and a contact 27 engages the strip a continuously. A contactor 28 engages for about 1¢ minutes the bar member c. An insulating segment 29 causes the contactor 28 to be raised to the level of the member c in order to make contacts. A circuit is established by the contactors 27, 28 through conductors 30, 31, 32 to energize a relay 33 with current taken from lines 34. The relay 33 actuates valve mechanism 35 to supply pressure fluid to the hydraulic cylinder 36 by a pipe 37. A discharge pipe 38 is provided. Similar drums and contacts are provided for operating the valves of hydraulic cylinders 40, 41 which are connected to rods 12<1>, 1211 for operating vertical rods 10<1>, 10<11> in the tanks 14, 16. While the contactor 28 and contactors 42, 43 which control the tanks 14, 16 are engaging the bar member c, the circuit of a contactor 44 is also closed to actuate hydraulic mechanism in a cylinder 45 to cause the arm 7 to move to the right and feed baskets to the holder 8, thus moving each set in the machine a step forward.
Patent GB-1345483-A (GB)
Title: Machine for stamping and dividing sheet metal in strip or band  form
IPC: B21D35/00
Filed: 1972-03-20
Abstract: 1345483 Stamping; shearing L SCHULER GmbH 20 March 1972 [25 March 1971] 12924/72 Headings B3Q and B3W Wide sheet is stamped and a strip severed therefrom in a press having stamping tools and tools for longitudinal and lateral severing, the stamping and longitudinal cutting tools being separate units which are spaced apart and capable of being driven independently. In the embodiment the stamping tool 4, longitudinal cutter 12 and transverse cutter 16 are each driven by the same crank-shaft 2. Detachable couplings 23 in the respective drives permit the tools to be driven independently of each other. The transverse cutter 16 can be moved bodily or swivelled out of position to facilitate access to cutter 12. Feed of the sheet is by rollers 10, 11.
Patent GB-635841-A (GB)
Title: Improvements in photographic silver halide emulsions
IPC: G03C1/015
Filed: 1947-05-13
Abstract: 635,841. Photographic emulsions. KODAK, Ltd., DAVEY, E. P., and KNOTT, E. B. May 13, 1947, No. 12934. [Class 98 (ii)] A photographic silver halide emulsion is prepared by forming in the absence of ammonia and in one or more stages, silver salt grains consisting at least partly of a silver salt which is more soluble in water than is silver bromide, converting the whole of such grains to silver bromide or iodobromide, and if the silver iodide content of the emulsion is less than 6 per cent by weight calculated on the total silver halide, treating the grains with an iodine compound to bring the silver iodide content up to at least 6 per cent by weight, with ripening (preferably in the absence of ammonia) or without ripening, and then either washing out some of the watersoluble salts or washing out the whole of the water-soluble salts followed by addition of water-soluble salts such as water-soluble chloride or bromide. The silver salt grains may be formed in a colloid binder containing little or no sulphur sensitizers, e.g. inert gelatin, cellulose esters or ethers, and resins (e.g. polyvinyl acetate). The pH of the emulsion may be between 4.5 and 7.0. The iodide content of the final emulsion may be 10 per cent, 20 per cent, or more. The emulsions, after exposure, may be developed in an " internal " developer. In example 1, aqueous solutions of KCl and AgNO 3  are simultaneously run into an aqueous solution of inert gelatin and KCI, an aqueous solution of KBr and KI is added, the emulsion is ripened for 20 minutes at 45 C., inert gelatin is added, and the emulsion is again ripened, set, shredded, washed free of all soluble salts, and, after addition of aqueous KCI, diluted. Example 2 is similar, except that after the simultaneous addition of the KCI and AgN0 3  solutions, an aqueous solution of KBr is added followed by ripening, an aqueous solution of KBr and KI is added followed by ripening, and an aqueous solution of KBr is added followed by ripening. In example 3, aqueous AgNO 3  is slowly added to aqueous inert gelatin, solutionsof KCNS and AgN0 3  are simultaneously added, and a solution of KBr and KI is added. Inert gelatine is added, the emulsion set, shredded washed, and melted, and inert gelatine and aqueous KBr are added. In example 4, aqueous solutions of sodium carbonate and AgN0 3  are simultaneously added to an aqueous solution of inert gelatin, and the remaining procedure is similar to example 3. Specifications 581,772, 581,773 and 581,789 are referred to.