baber/WOPTO huggingface dataset:
Patent GB-1429565-A (GB)
Title: Web tension control systems in web winding apparatus
IPC: B65H77/00
Filed: 1973-07-17
Abstract: 1429565 Winding webs KATAOKA MACHINE PRODUCT CO Ltd 17 July 1973 [17 July 1972] 33899/73 Heading B8R A method of controlling the tension in a wound web roll comprises the steps of continuously detecting the radius of a wound web roll, calculating the tension based on a theoretical equation and on the detected radius and applying the calculated tension to a comparison unit which stores a preset tension value to produce an output signal corresponding to the difference of the tensions compared in the unit for the purpose of controlling the winding torque applied to the wound web roll. In operation a required tension value F 0  and a tension gradient # are applied to a setting unit 10, Fig. 1, whose output forms the preset value stored in the comparison unit 11. The stored value is compared with a signal corresponding to a detected radius and emitted by detecting means 15 associated with the web roll spindle 14. The comparison unit 11 emits the torque controlling signal which is amplified in an amplifier unit 12 in turn producing an output signal which is applied to a torque actuator 13 which controls the torque applied to the spindle 14. The winding apparatus may include a plurality of web roll stands 78, Fig. 11, each supporting a plurality of pivotal arms 79 carrying respective spindles 83 on which are wound the web rolls 94. Web rolls 94 are formed from a wide web 30, fed over guide rollers 97, 98, 100, 95 and slit into a plurality of webs by a slitter 99. The arms 79 are biased by power cylinders 82 to control the nip pressure between web rolls 94 and the presser roller 95. The spindles 83 are driven by motors 90 and torque actuators 84 over belt drives 92, 89, 87 and gears 86, whereby the torque is controlled by radius detectors 81, connected to the pivotal shafts 80 of the arms 79 by endless chains 93 to indicate the angular displacement of the arms as a function of changing web roll radius.
Patent GB-652630-A (GB)
Title: Improvements in or relating to cathode ray tube picture transmitters
IPC: H01J29/41
Filed: 1947-12-23
Abstract: 652,630. Cathode-ray tubes. GENERAL ELECTRIC CO., Ltd., and NIXON, R. D. Dec. 23, 1947, No. 34012. [Class 39 (i)] A cathode-ray tube for translating still pictures into electrical signals includes a screen provided on its surface with a representation of a still picture, the representation being in an uninterrupted form and being of such a nature that when scanned by an electron beam the secondary electron emission at any point will vary in accordance with the tone value of the picture at that point. Signals may be obtained by collecting the secondary emission from the screen with a collecting electrode. In one method of making such a screen a rectangular aluminium plate is coated on one side with fish glue containing ammonium or potassium dichromate. The plate is spun at a speed sufficient to cause surplus glue to fly off and to leave an even surface of glue on the plate which is dried until hard. The coated surface is exposed through the negative to sunlight or ultra-violet and developed by washing out the unexposed parts in water. The plate is finally baked at about 400‹ C. to convert the remaining coating to carbon coke. The plate then has a coating of carbon of thickness varying according to the tone variations of the negative and the secondary emission ratio of the plate will vary with the thickness of the carbon. Polyvinyl alcohol may be used instead of fish glue.
Patent GB-1113312-A (GB)
Title: Improvements in or relating to viscous shear rotary dampers
Inventor: RUMSEY ROLLIN DOUGLAS
IPC: F16F9/12
Filed: 1965-08-09
Abstract: 1,113,312. Viscous shear rotary damper. HOUDAILLE INDUSTRIES Inc. 9 Aug., 1965, No. 34025/65. Heading F2S. A viscous shear rotary damper unit comprises a liquid-filled housing 7 having end plates 8, 39 and a cylindrical shear film working surface 23 opposite a complementary cylindrical damper surface 24 on a damper sleeve 25 which is torsionally coupled by splines 27 to a cylindrical flange 21 on the head portion 20 of a shaft 5 rotatably supported in the end plate 8 by ball bearings 11, 12 and 14, 15, the axial position of the sleeve 25, which is biased towards the end plate 39 by a spring 38, being controlled by a thermostatic bi-metallic device 31 which varies the area of confrontation of the working surfaces 23, 24 as a function of liquid temperature. The device 31 comprises a bi-metallic washer stack which is guided over a reservoir tube 42 and which acts between the end plate 39 and a flange 32 on a thrust sleeve 33 which has an outwardly extending flange 34 bearing against a flange 37 on the outer end of the damper sleeve 25 through a roller bearing assembly 35, the corresponding end of the sleeve 25 being held concentric by nylon pellets 29 which are seated in circumferentially spaced sockets 30 in the outer surface of the sleeve. A replenishing piston 45, with a seal 49 and loaded by a spring 5, is slidable within the reservoir tube 42 and has a rod 47 which extends through a ring nut 48 threaded into the end plate 39, the damper being fillable through a longitudinal bore 50 which has a check valve assembly 51 and is closable by a plug 55. The projection of the rod 47 beyond the nut 48 provides an indication of the amount of liquid in the damper, and also its thermal expansion, the spring 52 ensuring a moderate replenishing pressure on the liquid. During filling air is evacuated from one, or more, bleed-off ports 53 each having a plug 54. Minor corrections for temperature compensation may be accomplished e.g. by tapering either of the damper surfaces 23, 24. A bellmouth 41, as shown, may be adjusted by flaring at the angle desired.
Patent GB-1426461-A (GB)
Title: Dehydration catalysts
IPC: C07B61/00
Filed: 1973-07-17
Abstract: 1426461 Diolefins COMPAGNIE FRANCAISE DE RAFFINAGE 17 July 1973 [17 July 1972 5 Jan 1973] 34033/73 Addition to 1355704 Heading C5E [Also in Divisions B1 and C2] Diolefins and/or olefinically unsaturated alcohols are produced by dehydrating a diol in the presence of a catalyst comprising (a) at least one neutral pyrophosphate of Li, Na, Sr and Ba, and (b) chromium in combined form in an amount of up to 2% wt. (calculated as metal) and/or at least one oxide, hydroxide or basic salt of an alkali or alkaline earth metal. The composition may also contain at least one neutral ortho phosphate of Li, Na, Sr or Ba. The examples describe the dehydration of 2- methyl butane 2, 3 diol at 350-400‹ C. to give a product containing predominantly isoprene. The dehydration of 2,3-butandiol to butadiene is also mentioned.
Patent GB-430402-A (GB)
Title: An improved pipe for carrying liquids
IPC: B28B21/26
Filed: 1934-11-28
Abstract: 430,402. Lined and coated pipes. MARRIOTT, T. G., Artillery House, Artillery Row, Victoria Street, and RYNER, A., 3, Grosvenor Gardens, Buckingham Palace Road, both in London. Nov. 28, 1934, No. 34193. [Class 99 (ii)] [See also Group V] A composite pipe comprising a basic pipe 2 of metal, concrete &c., with an inner and /or an outer layer of natural or artificial asphaltic material, composed of bitumen in combination with mineral matter, is made by applying the asphaltic material to the basic pipe in a fine state of division or powder form and ramming, tamping or otherwise pressing it thereon. The tamping &c., of the asphalt is preferably effected by a vertically-movable packer-head comprising a rotary shaft 3, which carries round a plurality of sector arms 7 at such a speed that as the asphalt is poured into spaces 8 therebetween it is spread and forms a compressed layer, and a smoothing disc 6. Concrete pipes with an inner lining 10 may be made in a continuous operation, the concrete pipe being first formed within a mould 1 by a packerhead similar to but larger than that employed for the lining, and the lining then applied. Preferably the packerheads coact with a bed plate having four emplacements, viz. one for the erection of a mould, one for the making of the concrete pipe, the third for the lining operation, and the last for the stripping of the mould from the composite pipe. If desired metal reinforcement 11 is introduced into the concrete pipe after removal of the first packerhead, and filling material such as sand, powdered granite &c., may be added to the asphalt. The pipe may be provided with an outer layer of asphalt by applying the asphalt to the mould before the concrete.
Patent GB-486899-A (GB)
Title: Improvements in or relating to the manufacture of refractory materials
IPC: C04B2/10
Filed: 1936-12-12
Abstract: In the manufacture of dead burnt magnesia or magnesia containing mixtures, a slurry of the finely divided raw material is treated in an internally-heated rotary kiln which is so operated that the gas velocity at or near the gas exit of the kiln is between 125 and 225 feet per minute.  The gas velocity may be brought within the required limits by control devices by use of a kiln having a sufficiently large cross sectional area, by increasing the diameter of the kiln at the feed end, or by cooling the gases.  The maximum temperature to which the charge is raised may be between 1350 and 1750 DEG  C. and the temperature of the kiln at the feed end may be about 300 DEG  C. In the case of magnesium oxide slurry obtained from sea water the free water content should be between 45 and 65 per cent and for dolomite slurry between 5 and 20 per cent.
Patent GB-312896-A (GB)
Title: Improvements in pedal driving-mechanism
IPC: B62M3/00
Filed: 1928-11-21
Abstract: 312,896. Chandeze, L. Nov. 21, 1928. Drawings to Specification. Cranks.-Cranks for pedal driving-mechanism are formed to a continuous curve pointing in the direction of travel, a tangent to the curve at the peda] axis forming an acute angle, preferably of about 45‹, with the chord thereof. The chain wheel spokes may be. curved in the same direction as the cranks. Reference has been directed by the Comptroller to Specifications 13710/91, [Class 136, Velocipedes], 18185/91; and 2262/98, [Class 136, Velocipedes].
Patent GB-841101-A (GB)
Title: Anti-splash vessel for liquids
Inventor: ROBINSON CECIL STANLEY
IPC: A47G19/23
Filed: 1958-10-27
Abstract: 841,101. Anti-splash drinking vessels. ROBINSON AVIATION Inc. Oct. 27, 1958, No. 34330/58. Class 66. An anti-splash drinking vessel, e.g. a cup 10, has a baffle ring 18 which is substantially continuous round the inner circumference of the vessel. Two notches as at 34 are provided in the ring 18 to enable the contents to be easily poured out.. The tangent of the curve 26 of the lower surface of the ring 18 makes an angle of 60-70 degrees with the axis of the cup ; and the width of the ring 18 in cross-section, e.g. between lines a and b or c and d, is equal to 5-8% of the inner diameter of the cup immediately below the ring. The cup may be of ceramic or plastics material and is so shaped that one may be stacked in another, a part 40 on the inner cup resting on the upper surface of the ring 18 on the outer cup.
Patent GB-967769-A (GB)
Title: Improvements in or relating to glass ampoules or similar vessels adapted to be broken open without applying a file, and to a method for processing the same
IPC: B67B7/92
Filed: 1962-09-10
Abstract: <PICT:0967769/C1/1> <PICT:0967769/C1/2> <PICT:0967769/C1/3> <PICT:0967769/C1/4> A method for producing a weakened area on glass ampoules to enable these ampoules to be readily broken open manually at the weakened area comprises wearing off the ampoule wall by frictionally applying thereto a material softer than the glass, for example aluminium or aluminium alloy.  Ampoules 1, on the base of the neck 2 of which a weakened area in the form of a groove 16 to act as an incipient breaking line is to be produced, are mounted on supports 3 included in an ampoule making machine.  A thin aluminium alloy disc 6 driven by an electric motor 12 is mounted on a sprung oscillating arm that urges the disc 6 towards the ampoule 1.  The supports 3 rotate about an axis coinciding with the ampoule 1 axis and are moved in turn to the point where the disc 6 is applied to them.  The abrasive power of the disc 6 is provided by minute fragments of glass that become embedded in its edge and in use it is self-regenerating. A new disc 6 has first to be prepared by applying it, while rotating at high speed, to a glass surface. The disc 6 is preferably applied to the ampoule 1 at an angle normal to the glass surface being attached, but may be applied as shown in Fig. 8.  Instead of the disc 6, a wire or ribbon may be used or a disc-shaped brush with bristles of aluminium or aluminium alloy wire extending outwardly from its circumference. In another embodiment, Fig. 4, the ampoules 1 while being transported by cradles 18 of a chain conveyer 17 are raised in turn, by a device comprising driven rubber rollers 24, to be applied against idling rollers 26 and presented to the action of the rotating disc 6.  In this embodiment the disc 6 is mounted on an oscillating support 30 pivoted to a frame 21 and provided with an adjustable stop 36 to limit its downward movement.  A testing device (Division B3) that applies a predetermined bending force to the neck of the ampoules is also described.  A protective covering may be placed over the necks of the ampoules 1.  The position of the groove may be indicated by, for example, marking with enamel.
Patent GB-857466-A (GB)
Title: Improvements in or relating to electrical recorders
Inventor: HUNTER IAN
IPC: B41J2/39
Filed: 1957-11-05
Abstract: 857,466. Electric pens for recording instruments. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. Aug. 18, 1958 [Nov. 5, 1957], No. 34527/57. Class 146(3). A recorder of the kind in which recording is effected on electro-sensitive paper by passing electric current through a recording stylus in contact with said paper has a recording stylus made of an electrically conductive, hard metallic carbide and spring-biased towards the paper. As shown the stylus comprises a rod 2 of tungsten carbide the lower end of which is rounded at 2a. The rod is resistance welded at x to a beryllium-copper spring 3 which serves as the spring mounting for the stylus. After welding the rounded end 2a of the stylus may be ground to a point 2b for contact with the paper. The. stylus may also be made of titanium carbide or a sintered mixture of tungsten carbide and titanium carbide with hard metal cementing agents such as chromium or cobalt. The rod 2, instead of being resistance-welded to the spring 3, may be fitted in a bushed hole in the spring and fixed there by a synthetic resin adhesive. When the adhesive is set a deposited layer of silver is evaporated on over the junction to provide a permanent electrical connection between the stylus and the spring. An outer protective jacket of surface coating resin may be provided over the silver layer.
Patent GB-648981-A (GB)
Title: An electric circuit for the measurement of linear dimensions according to the capacity principle
IPC: G01B7/28
Filed: 1947-12-30
Abstract: 648,981. Electric domensional measurements. SKODA WORKS, NATIONAL CORPORATION. Dec. 30, 1947, No. 34651. Convention date, Jan. 21, 1943. [Class 37] [Also in Group XXXVIII] Fig. 1 shows a capacity plug gauge having a cylindrical body in which insulated electrodes a, b are mounted 180 degrees apart. The electrode diameter Dk is accurately dimensioned, and oversize ends act as guides so that the electrodes do not contact the surface to be measured either electrically or mechanically. The two electrodes together with the conductive mass of the work constitute two condensers in series whose total capacity is a function of the clearance between the aperture and the gauge. This capacity C1+C2 is connected across condenser C3 to tune inductance L1 in the grid circuit of a pushpull H.F. oscillator I (Fig. 3), the output of which is loosely coupled into the grid circuit of a second H.F. oscillator II whose frequency is variable by a condenser C4 and a switchable condenser bank C5 - C9. The beat frequency in the anode circuit of the second oscillator is detected by earphones or loudspeaker T so that its frequency may be varied to synchronize with that of the first oscillator, which is a function of the clearance between the gauge and the aperture. The switchable and variable condensers may be calibrated in aperture dimensions. Synchronism between the two oscillators may be indicated by applying their respective outputs to the X and Y plates of a C.R.O. (Fig. 4, not shown). In a modification (Fig. 5, not shown), a fixed frequency oscillator is inductively coupled to a tuned circuit whose frequency is variable by the gauge capacity and which is in turn coupled to a detector and galvanometer. Capacity variations with differing gauge clearances vary the amplitude of the detector signal and the galvanometer deflection, which may be dimensionally calibrated. The invention is applicable to caliper gauges for measuring the thickness of metal sheets.
Patent GB-156579-A (GB)
Title: Improvements in apparatus for preventing the stealing of motor-cars
IPC: B60R25/022
Filed: 1920-12-08
Abstract: 156,579. Hamon, M. A. Jan. 5, 1920, [Convention date]. Addition to 152,025. Guarding against unauthorized use.-The wheel lock described in the parent Specification has the arm carrying the lock made telescopic and connected to the car by a ball-and-socket joint. As shown, the arm comprises telescopic tubes D and H, the inner tube being connected to the ball c. The lock comprises a pivoted arm K which can be secured by a lock and key M or by a padlock passed through apertures. The base-plate A of the ball joint is secured to the car body by bolts, one of which passes through a central aperture O. To unscrew the nut of the bolt passing through the hole 0, the telescopic arm must be turned down until a hole C' in the ball is in line with it, thus preventing detachment of the arm from the vehicle when the steering-wheel is locked.
Patent GB-1394587-A (GB)
Title: Hydraulic transmission device
IPC: F15B9/00
Filed: 1972-07-25
Abstract: 1394587 Fluid-pressure servomotor systems ROBERT BOSCH GmbH 25 July 1972 [27 July 1971] 34723/72 Heading G3P A manually or mechanically operable primary piston 5 and a fluid-operated secondary piston 17 each associated with a variable restrictor 9, 10 and 19, 21 are arranged in parallel with fixed restrictors 27, 28 between a pressure medium source 1 and a reservoir 22 to form a Wheatstone bridge in which movement of the piston 5 causes corresponding movement of the piston 17. By inter-connecting spaces 7 and 16 through the line 11, a faster response is obtained from the piston 17. The arrangement may also be modified by substituting pressure relief valves for one or both of the restrictors 27, 28. When two relief valves are used they may be inter-connected by a tappet device (47, 54), Fig. 4 (not shown) and be loaded by a common spring (55), Fig. 5 shows a further arrangement in which a valve plate 83 is moved by diaphragms 80, 81 whenever a pressure difference occurs between points 29 and 31 in the bridge due to delay in movement of the valve 17. The plate causes spaces 70, 71 to be connected with the source through a nozzle 84 or with the reservoir through a nozzle 85 until the valve 17 has moved to equalize the pressures at the points 29, 31. In addition to the fixed throttles 27, 28 of the bridge, a further fixed throttle 69 is provided downstream of a supply line 66 for the nozzle 84 and a combined throttle and relief valve 67, 68 to maintain a bias pressure in a space 73.
Patent GB-1055909-A (GB)
Title: Catalyst preparation for methane production
IPC: C07C67/00
Filed: 1964-08-25
Abstract: Methane is made by reacting C5 to C8 paraffins with steam at 600 DEG to 925 DEG  F. in the presence of a catalyst made by coprecipitating Ni and Al as hydroxides, carbonates or basic carbonates from aqueous solutions, separating a precipitate which contains 0.4 to 1.3 atoms of Ni per atom of Al, drying at 200 DEG  to 400 DEG  F. calcining at 600 DEG  to 925 DEG  F. and reducing in hydrogen.  A fuel gas rich in methane may be made in an analogous manner. Generally the proportion of steam is about 1.5 to 5 parts by weight per part of hydrocarbon and the reaction zone pressure 1 to 70 atmospheres.  Examples describe the reforming of hexane with addition of desired of C5/C6 naphtha.  Gases after removal of CO2 and water vapour of calorific value 600 to 1000 B.T.U./S.C.F. may be obtained.ALSO:A nickel/alumina catalyst contains 0.4 to 1.3 atoms of nickel per atom of alumina and is made by coprecipitating Ni and Al as hydroxides carbonates or basic carbonates followed by drying at 200 - 400 DEG F, calcining at 600 - 925 DEG F, and reducing with hydrogen.  The catalyst may be promoted by a Ba, Sr, Cs or K compound.  Details of catalyst surface area are given.
Patent GB-930403-A (GB)
Title: Electrophotographic projection copying process
IPC: G03G5/082
Filed: 1959-10-13
Abstract: 930,403. Electrophotographic material. RADIO CORPORATION OF AMERICA. Oct. 13, 1959 [Oct. 30, 1958], No. 34729/59. Drawings to Specification. Class 37. [Also in Group XX] An electrophotographic recording element comprises a layer of photoconductive material sandwiched between a conducting layer and an insulating layer and the capacity of the insulating layer per unit area is greater, e.g. by ten times, than that of the photo-conductive layer while the resistance per unit area of the insulator layer is much larger than that of the photoconductive layer. In examples, the photoconductor is cadmium sulphide or cadmium selenide and the insulating layer is polystyrene, polyvinyl acetate, polyvinyl chloride, or a vinyl acetate-chloride copolymer. The conducting layer may be of glass with a transparent tin chloride or metal coating, or may be opaque. Specific preferred thicknesses of insulating and photoconductive layers are given in the Specification.
Patent GB-1096979-A (GB)
Title: A method of electrolysing manganous chlorine in a diaphragm cell
Inventor: KOOI CORNELIS MARIUS
IPC: C25C1/10
Filed: 1966-08-03
Abstract: In a method of electrolyzing MnCl2 in a diaphragm cell, Mn is deposited on a cathode e.g. of Fe or Cu from a catholyte containing MnCl2 e.g. 1.2-2.5 moles/1 and NH4Cl, and Cl2 is evolved at an anode e.g. of Pt or platinized Ti from an anolyte free of NH4 ions and containing at least 1 and preferably no more than 3.2 moles/l of MnCl2 and not more than 2.5 gramions/1 of H ions e.g. 0.2-1.0 mole/l HCl.  The electrolytically formed manganic and chloride ions may be converted into manganous ions and chlorine by heating the anolyte, preferably to at least 60 DEG C. outside the anode compartment prior to returning the cooled anolyte to the cell. The anode may be of graphite impregnated with a catalyst for the conversion such as a compound of Ag, Pt, Pb or Cu, e.g. AgCl.  KCl may be added to the catholyte and anolyte.  The diaphragm may be of ceramic or woven polyester cloth.