baber/WOPTO huggingface dataset:
Patent GB-1431927-A (GB)
Title: Mandrels for use in the forming of hollow articles
IPC: B29C57/06
Filed: 1973-07-05
Abstract: 1431927 Grooving pipes HEPWORTH PLASTICS Ltd 5 July 1973 32098/73 Heading B5A A mandrel for grooving a thermoplastics pipe 22 comprises annular, coaxial body parts 1A, 1B and a plurality of segments 4 movable radially by respective pistons 5 to project from or be withdrawn within the outer peripheries of body parts 1A, 1B. Successive segments 4 are interlocked by tongues and grooves 12, 13 (see also Fig. 2, not reproduced), and are moved radially by oil pressure and suction from a central chamber 6, with the pistons 5 moving in cylindrical guides 7 and surrounded by seals 8. The segments 4 are encased by an elastomeric band 9, and force the pipe wall 23 into grooves in surrounding mould parts 11. The body parts 1A, 1B are supported by a tube 14 secured to a support plate 19; cooling water is circulated through channels 27, 26 and 25. The end of the heated thermoplastics pipe 22 is enlarged by pushing over the mandrel, and the segments 4 are projected either before or after this engagement.
Patent GB-751708-A (GB)
Title: Process and apparatus for separating condensible vapours from gases supplied to longdistance mains and to gas holders in which varying pressures and temperatures prevail
IPC: F25J3/08
Filed: 1954-11-05
Abstract: 751,708. Purifying gases. RUHRGAS AKT. GES. Nov. 5,1954 [Nov. 7, 1953], No. 32109/54. Class 55(2). In a process for separating condensible vapours from gases supplied to long distance mains or gas holders in which varying pressures and temperatures prevail and in which the separation is effected by deep cooling of the gases by expansion accompanied by the performance of work, the gas is first compressed in one or more stages to a constant pressure less than the minimum mains or storage pressure, then cooled, freed from condensates formed in it, expanded in a work-performing expansion engine to produce the desired deep cooling of the gas and, after separation of the condensates thereby formed in it, finally compressed to the mains or storage pressure, In the apparatus shown for carrying out the process, the gas is led from a main 11 to several two stage compressors la, 1b, 1c, and compressed to a constant intermediate pressure. The gas at each stage traverses a cooler 5 in which it is cooled with water and a separator 6 in which it is freed from condensate. The pre-cooled gas is collected in a main 12 and further cooled in a heat exchanger 9, the liquid condensate being removed in a separator 8. The gas then passes to an expansion engine 4 in which it expands, performing work, and is thereby cooled to a temperature below the freezing point of the condensates, the gas then passing to a snow filter 7 having porous filtering members by which the snow of condensate is removed. The deep cooled, purified gas is led through the cooling jacket of the expansion engine 4 and through the heat exchanger 9 in counterflow to the pre-purified gas. The purified gas is then compressed to the final pressure by a final compressor 3, and final cooler 5 whence it passes to the mains or storage plant. The expansion engine 4 and final compressor 3 are coupled to a motor-generator 10, the machine 10 operating as a motor when the work performed by the expansion engine 4 is less than that required by the final compressor 3 but as a generator when the energy produced by expansion exceeds the requirements of the compressor.
Patent GB-823695-A (GB)
Title: Improvements in or relating to a method of retaining part of the core-wire material within a filament helix wound around the core
IPC: H01K3/02
Filed: 1955-11-10
Abstract: 823,695. Making electric lamp filaments. PHILIPS ELECTRICAL INDUSTRIES Ltd. Nov. 10, 1955 [Nov. 13, 1954], No. 32195/55. Class 39(2) [Also in Group XVI] In order that the process of removing by etching the unwanted parts of a core upon which a wire filament is helically wound shall result in substantially flat end surfaces 8, 9 upon a retained core piece 7 of the required overall length, at least the parts E-C and D-F of the filament and core immediately adjacent to the core piece 7 are, before the application of a wax layer upon the part 7 and the portion of the filament wound upon it, treated with a substance capable of increasing the surface tension of the wax. The parts E-C and D-F may be painted with a brush moistened by partly hydrolised ethyl silicate, or the complete filament with the core may be immersed in a bath of that substance, after which a wax layer is applied to the part C-D and the unwanted core material etched away and the wax layer subsequently removed.
Patent GB-669562-A (GB)
Title: Improvements in or relating to the manufacture of mouthpiece cigarettes
IPC: A24C5/52
Filed: 1948-12-13
Abstract: 669,562. Cigarette-making machines. MOLINS, D. W., and MOLINS MACHINE CO., Ltd. Dec. 13, 1949 [Dec. 13, 1948] , No. 32211/48. Class 130. A composite filler for making mouthpiece cigarettes is formed by first forming a tobacco filler of average density below that of the cigarettes, severing tobacco sections from the filler and temporarily arresting the endwise movement of the filler after each section is separated therefrom, whereby the filler is compacted endwise, moving successive severed sections away from the arrested filler to form a gap into which a stub is inserted to form a composite filler having a speed slower than the tobacco filler, which latter is fed through a confining passage in which its speed is reduced to that of the composite filler, whereby each tobacco section is again compacted endwise and its average density increased to that desired in the cigarette. Tobacco is showered on to a conveyer 2 to form a continuous filler in which a rotating worm 3 forms gaps containing little or no tobacco, the average density of the filler being less than that required in the cigarettes. A knife 7 severs sections from, and simultaneously arrests the motion of, the filler which is thereby compacted endwise, the severed sections being removed by a paper web 10 to form a space into which a fluted wheel 8 carries a stub which is ejected therefrom by the succeeding tobacco section. The resulting composite filler passes through a guide 12 preferably of polished steel, to a garniture. The web 10 moves at a slower speed than the conveyer 2 so that when the filler is released by the blade 7 its speed is reduced on contacting the web 10, and a further endwise compacting of the filler is obtained. The stubs in the composite filler may be correctly positioned by means of a moving finger as described in Specification 669,569. Specification 460,245 is referred to in the Provisional Specification.
Patent GB-783287-A (GB)
Title: A process for the treatment of fabrics, fibres and fibrous material with corrosive gases and/or vapours
IPC: D06L3/06
Filed: 1954-11-08
Abstract: Fabrics, fibres or other fibrous materials are treated in a continuous process with liquid reagents which are decomposed by heat into corrosive gases or vapours, and heat, the heat being supplied by a superheated vapour under such conditions that the impregnating liquid is wholly converted into a superheated vapour in a heating chamber which is provided with means for exhausting excess vapours. As exemplified, a cotton fabric is impregnated with an aqueous chlorite solution at 20 DEG  C., mangled, impregnated or sprayed with formic acid and passed to a heating chamber wherein superheated steam at a temperature of above 105 DEG  C. is projected from nozzles on to both sides of the fabric at speeds in excess of 5 metres per second. The exhaust from the heating chamber is fed back to the inlet through a closed circuit having reheating means.  Specifications 723,566, 734,732 and 764,483 are referred to.
Patent GB-761879-A (GB)
Title: Improvements relating to end connections for galvanised structural tubes and similarelements
Inventor: NOCK JAMES LEE
IPC: E04B1/58
Filed: 1953-11-20
Abstract: 761,879. Rod couplings. PAINTER BROS., Ltd. Sept. 8, 1954 [Nov. 20, 1953; May 21, 1954], Nos. 32308/53 and 14949/54. Class 99(1) An end connection 1, Figs. 1 and 2, for a metal tube 2 employed, for example, in the construction of openwork or lattice type masts, poles and towers, compries a part 3 of trough section and a flattened terminal part 4 extending directly from and integral with the part 3 which fits on and is secured to the tube 2 such that the part 4 lies directly opposite the open end of the tube either in or on a plane containing the axis of the tube or spaced a short distance from such plane and the open end is open to the exterior. This open-end construction allows free flow of galvanizing metal inside the bore of the tube. The part 3 is tapered at 5 and is welded to the tube along the edges 6, and - the part 4 is curved at 8 where it joins the part 3 and is perforated at 7 to receive a bolt for connecting the tube to another tube &c., the trough extending right up to the hole. In a modification (Fig. 3, not shown), the side edges of the part 4 are turned back to provide shallow lips, and in a further modification, Fig. 6, a channelshaped stamping 10 having a slot 14 as wide as the end of a tube 15, and channel sides 11 which are inclined or rounded from points 16 in line with the semi-circular or semi-elliptical end of the slot, is welded to the tube 15 where the sides of the slot embrace the tube. Two of the connections 1 or 10 may be applied to the end of a tube at opposite sides (Figs. 7 and 8, not shown).
Patent GB-1489810-A (GB)
Title: Travelling wave tubes
IPC: H01J23/087
Filed: 1975-08-02
Abstract: 1489810 Travelling-wave tubes ENGLISH ELECTRIC VALVE CO Ltd 28 July 1976 [2 Aug 1975] 32421/75 Heading H1D In a travelling-wave tube the slow-wave structure of which comprises a sequence of cloverleaf cavities 2, Fig. 3 (ie. 1, 2, 3, and 4, Fig. 1, not shown), separated by radially slotted, centrally apertured plates of which an example is shown in Fig. 2, permanent magnet material 14 is provided between the inwardly directed noses of each cavity, axially magnetized in opposite senses in adjacent cavities (Fig. 1) to provide a periodic permanent magnet focussing structure which is outside the tube but close to the electron beam. The envelope is formed by the copper walls 15 of the cavities which are brazed to the soft iron coupling plates (5 to 9, Fig. 1). In further embodiments, the half period of the magnetic focussing field is not equal to the length of a single cavity, as in Fig. 1, but to two cavities (Fig. 4, not shown), or three cavities (Fig. 5, not shown), the intervening coupling plates in this case being of copper except for a soft iron outer annulus (22, Fig. 6, not shown) for the radial extent over which the plate is brazed to the neighbouring magnets, in order to couple the latter.
Patent GB-1098423-A (GB)
Title: Pipe-bending machine
IPC: B21D7/025
Filed: 1965-07-29
Abstract: 1,098,423. Bending pipes. HILGERS MASCHINEN - UND APPARATE - BAUANSTALT m.b.H. July 29, 1965 [Aug. 1, 1964], No. 32473/65. Heading B3E. Pipe bending apparatus including a bending pattern to which the pipe is secured and around which the pipe is bent on rotation of the pattern, the unbent portion of the pipe being urged longitudinally towards the bending pattern by a pressure which moves during the course of the bending operation, the said pressure being controlled by means moving in synchronism with the bending pattern and comprising a plurality of cam members separately adjustable on a carrier so as to provide a stepped curve profile. Tubing 13 is clamped at 14 to a rotated bending pattern 12, the unbent trailing portion of the tubing being urged longitudinally towards the pattern 12 by hydraulic means controlled by a valve 25, the valve 25 is operated by a feeler 24 moved by a series of cam rings 18, 19, 20 adjustably secured to a carrier 16 rotated in synchronism with the bending pattern 12 and also carrying means 17 which switch off the drive to the pattern 12. The rings 18, 19, 20 are adjusted so as to form a stepped curve profile.
Patent GB-865294-A (GB)
Title: Improvements in the production of cyanuric acid and alkali metal cyanurates
Inventor: MERKEL KARL
Filed: 1959-09-24
Abstract: In a process for the production of cyanuric acid by heating urea in a water immiscible organic liquid which does not dissolve or attack the urea or cyanuric acid, after the urea has been reacted, the reaction mixture contained in the reaction vessel is treated with a solution of potassium or sodium hydroxide, acetate, carbonate, or formate in water or a water/alcohol mixture and the resulting cyanurate solution is separated from the water immiscible organic liquid.  The use of aqueous solutions of sodium or potassium hydroxide containing less than 25% wt. of the sodium or potassium hydroxide is preferred.  The reaction mixture is preferably treated with an amount of solution sufficient to cause the cyanuric acid to be substantially converted into the corresponding trialkali metal cyanurate.  The resulting solution of cyanurate after isolation from the water immiscible organic liquid which may subsequently be returned to the reaction vessel, may be reacted with chlorine to yield tri or dichloro cyanuric acid or be acidified with mineral acids to recover the cyanuric acid.  Alcohols specified for use in the water/alcohol mixtures are methanol, ethanol, or isopropanol, the alcohol being present in amount sufficient only to ensure complete solution of the sodium or potassium compounds therein.
Patent GB-1478820-A (GB)
Title: Method of making a thin-walled sle)ve for a jamming-roller freewheel clutch
IPC: F16D41/06
Filed: 1975-08-04
Abstract: 1478820 Making clutches W SCHAEFFLER and G SCHAEFFLER [trading as INDUSTRIEWERK SCHAEFFLER OHG] 4 Aug 1975 [3 Aug 1974 15 Nov 1974] 32570/75 Heading B3A [Also in Division F2] A housing for a combined wedging roller oneway clutch and bearing assembly in which bearing races 3, 4 on each side of the clutch have equal diameters, is formed by initially deep drawing a thin walled sleeve 1 having wedge surfaces 2 and bearing races 3, 4, the race 3 having a diameter not greater than the inner envelope circle diameter of the wedge surfaces and the race 4 having a diameter not less than the outer envelope circle of the wedge surfaces, and thereafter inserting the sleeve 1 in a die 7 and applying internal pressure to the race 3 to expand the latter into contact with the die bore. As shown the race 3 is expanded by applying axial pressure through a plunger 11 to a resilient element 10 of rubber or plastics material. In Fig. 3 (not shown) the race 3 is expanded by rolling.
Patent GB-521835-A (GB)
Title: Production of coloured pictures
IPC: G03C7/26
Filed: 1938-10-22
Abstract: 521,835. Colour photography. SCHINZEL, K., and SCHINZEL, L. Oct. 22, 1938, No. 32574/39. Convention date, Oct. 22, 1937. Divided out of 521,746. [Class 98 (ii)] A three-colour photograph is produced in an exposed material having on a single support three differentially colour sensitized silver halide emulsions at least one of which contains a reducible colouring matter or organic compound from which can be obtained by oxidation, reduction or hydrolysis a reducible colouring matter by developing the latent images to silver and producing coloured images in the layers by converting the first developed silver image or the residual silver halide image by means of a reagent in solution into a reducing agent for the reducible colouring matter and reducing in the image areas the colouring matter originally present or which has been diffusely formed from the water-insoluble organic derivative. The reduction products are washed out. The silver image may be replaced by compounds such as Prussian Blue, or manganous, titanous, or stannous ferrocyanide. The leuco vat dyes formed by reduction may be converted into water-soluble salts by excess sodium hydroxide, ammonia, or organic bases. The emulsions may be tanned or the gelatine partially replaced by colloids such as collodion or cellulose acetate. The photographic materials and dyes described are identical with or similar to those described in Specification 521,888. Specifications 500,826, 503,752, 512,559, 520,173, and 523,296 also are referred to.
Patent GB-1189543-A (GB)
Title: Process and Apparatus for Producing a Particulate Product
IPC: C09B67/06
Filed: 1968-07-09
Abstract: 1,189,543. Spray-drying. COLGATE-PALMOLIVE CO. 9 July, 1968 [19 July, 1967], No. 32619/68. Heading B1B. [Also in Divisions C5] A countercurrent spray drying process for producing a particulate product substantially free from fines and agglomeration comprises: (1) forming a first stream of liquid mixture which is dryable to form solid particles; (2) passing this stream to a point of entry in an upper portion of a drying tower; (3) forming a second similarly dryable liquid mixture and passing it to a point of entry in a lower portion of the tower; (4) simultaneously spraying the two streams downwardly from their points of entry into an upwardly flowing stream of drying gas whereby the spray droplets are dried to solid particles; (5) removing the dried mixture of discrete particles from the tower. The respective feed streams may be differently coloured to give a multicoloured product e.g. a detergent composition; first stream preferably forms the major proportion of the final product and is sprayed in finer droplets, e.g. from a smaller spray nozzle under greater pressure, to provide smaller particles than those from the second stream. The lower point of entry is 15-60% below the upper entry (based on the distance of the latter from the base of the tower) preferably 25%. The drying gas stream carries the fines out of the top of the spray tower to a recovery system, where the usable portion may be re-cycled.
Patent GB-771240-A (GB)
Title: Improvements in or relating to alternating current generating systems
Inventor: HAMILTON RALPH FREDERIC GILBER
IPC: H02J3/46
Filed: 1953-11-25
Abstract: 771,240. Automatic voltage control systems. PLESSEY CO., Ltd. Jan. 13, 1955 [Nov. 25, 1953], No. 32669/53. Class 38 (4) In a system in which three automatically regulated polyphase alternators supply a common load, equal heating of the field coils is ensured by biasing the automatic voltage regulators for each alternator so as to maintain the alternator field currents equal or in a fixed ratio. The alternators A1, A2, A3 have field windings F1, F2, F3 controlled by conventional carbon-pile voltage regulators R1, R2, R3. The regulators, however, have additional bias windings D1, D2, D3 connected to a common equalizer bus-bar and to the points X, Y, Z so as to maintain these points at equal potenials, i.e. to maintain the voltage drop across each field winding F1, F2, F3 equal. The windings D1, D2, D3 may be shunted by adjustable resistors L1, L2, L3 so as to maintain the field currents in a pre-set ratio.
Patent GB-1513026-A (GB)
Title: Conveyors
IPC: B65G17/12
Filed: 1975-08-05
Abstract: 1513026 Endless conveyers for elevating loads CAMERON BROS ENG CO Ltd 5 Aug 1975 32716/75 Heading B8A In an arrangement inner and outer pairs (one pair only shown in Fig. 2) of endless conveyer chains, conveying platforms 1 in a horizontal attitude on a working run of the conveyer, and in a vertical attitude (R.H. side of Fig. 2) on a return run of the conveyer, the inner chains have arcuate links 29 so that on the return run they can engage those mounting members 30 of the platforms that on the working run of the conveyer are connected only to the outer chains. Each platform 1 comprises slots (33) (Fig. 4, not shown) carrying abutment members (34) and mounted at each end on respective chains, the abutments engaging to hold the platform flat and rigid when the chains are extended horizontally. The platforms may however bend arcuately downwards (as indicated in Fig. 4, not shown) to pass around sprockets from the working to the return runs of the conveyer. A hoist 12 is provided to enable the upper and lower terminals 39 and 40 (Fig. 1) of the conveyer, to be lowered and lifted respectively from normal loading and unloading stations C and D, to alternative respective stations B and A. Latches not shown may be automatically operable to prevent feeding or discharge between the conveyer and subsidiary conveyers 10 when the terminals 39 and 40 are not in correct position. Safety cages may also be employed at feed/discharge stations.
Patent GB-1041059-A (GB)
Title: An arrangement for regulating turbines
IPC: H02P23/16
Filed: 1963-08-19
Abstract: 1,041,059. Automatic control of turbines. SIEMENS-SCHUCKERTWERK A. G. Aug. 19, 1963 [Aug. 18,1962 ], No. 32790/63. Heading G3R. Steam turbine 4 drives synchronous machine 5, a signal n representing the speed of the machine being compared with reference signal n<SP>*</SP> whereby speed control circuit 6 passes the error signal to selector 8. A second input to the selector is provided by control circuit 9 which receives signals P<SP>*</SP>, P, representing respectively the desired and actual valves of the power output of the synchronous machine. In addition, control circuit 10 provides a signal to the selector 8 until the rotor angle of the synchronous machine approaches a limiting value whereupon it exerts an over-riding control on the valve supplying steam to the turbine. The output signal H<SP>*</SP> of the selector acts as a reference signal for comparison with signal H representing the actual amount of opening of the steam valve. The signal P<SP>*</SP> cumprises components P1*, P2<SP>*</SP>, the latter representing the difference between the output frequency of the synchronous machine and a constant frequency. Initially, the speed regulation circuit is operative, the circuit 9 receiving constant signal delta P* which provides a larger output of circuit 9 than circuit 6, only the output of the latter being effective since selector 8 responds to the minimum input signal. Thereafter, signal delta n<SP>*</SP> renders circuit 6 ineffective and circuit 9 takes over control. A limiter circuit 18 provides delayed response to sudden power changes. Signals T, D, represent fresh steam temperature and pressure in a boiler and limit the input signal to the circuit 9 when limiting values of these quantities are reached.