baber/WOPTO huggingface dataset:
Patent GB-1378833-A (GB)
Title: Gate valves
IPC: F16K49/00
Filed: 1972-07-24
Abstract: 1378833 Valves KOPPERS CO Inc 24 July 1972 [10 Sept 1971] 34592/72 Heading F2V In a gate valve for high temperature pressurized fluids a seat 19 is replaceably held in a valve body 23 by a spool member 53 which is secured by bolts 71 to the body. The seat 19 is hollow for fluid cooling and has a flange 47 which is held between flanges 59, 73 on the spool member and body respectively, gasket 75 between flanges 47, 73 absorbing local deformations of the valve body. The valve body 23 is also hollow and is fluid cooled. Flange 59 is rendered substantially rigid by spaced plates 61. Spool member 53 is lined with refractory material 63. The closure disc 17 is provided with a seat-co-operating bead 35.
Patent GB-396601-A (GB)
Title: Fluorescent screen
IPC: G21K4/00
Filed: 1932-12-07
Abstract: 396,601. Fluorescent screens. SIEMENS-REINIGER-VEIFA GES. FœR MEDIZINISCHE TECHNIK, 58, Mohrenstrasse, Berlin. Dec. 7, 1932, No. 34694. Convention date, Dec. 16, 1931. Addition to 372,827. [Class 98 (i).] To obviate loss of brightness, the active layer of the screen of the parent case, or its binding medium, is coloured with a colouring matter which selectively absorbs part of the fluorescent light and so alters the spectral composition of the emitted light. Best results are obtained when the emitted light is yellow or yellowish-green, corresponding with maximum colour sensitivity of the eye. Reference is made to zinc silicate and cadmium tungstate as luminescent materials, and examples are given of screens made from cadmium tungstate with a cellulose ester binding medium and coloured with brilliant green, fluorescein, quinoline yellow, auramine, chrysodine or iodine ; also of the use of coloured natural or synthetic resins as binding media, alone or mixed with other coloured or uncoloured binding media, e.g. orange or ruby shellac solutions alone or combined with cellulose ester solutions.
Patent GB-807045-A (GB)
Title: Swath leveller for pick-up baling presses
IPC: A01D89/00
Filed: 1955-12-05
Abstract: 807,045. Balers. CLAAS, A., and CLAAS, F. Dec. 5, 1955 [Dec. 3, 1954], No. 34715/55. Class 94(1). A baling press of the kind including mechanism for picking up the material, such as hay or straw, to be pressed has mounted on it forwardly of the pick-up mechanism raking means adapted to rake the material in advance of the baling press to a substantially uniform depth. In one form, Fig. 1, a fixed rake is assembled from bars 6 adjustably secured for pivotal and axial adjustment on a rod 4 fixed to the loader, the bars carrying tines 7 whose positions on the respective bars can be adjusted to lie in staggered relationship. In a second form, Fig. 2, a fork 12 is pivoted to the lower end of a bar 16 which is carried intermediate its end on a crankshaft 11, the upper end of the bar 16 being connected by a link 15 to the framework of the baling press. A spring 19 normally maintains the fork aligned with the bar 16 but allows it to pivot when heavy objects are encountered.
Patent GB-325307-A (GB)
Title: Improvements in or relating to the treatment of steel castings or other metals
IPC: C21D9/00
Filed: 1928-11-26
Abstract: 325,307. Herrmann, G., and Zerzog, L. Nov. 26, 1928. Cooling charges; hearths.-A furnace for annealing steel or other castings is provided with a hollow stationary or movable hearth through which, at the termination of the heating operation, air is rapidly blown or sucked to cool the charge d. The hearth is composed of refractory blocks each having a horizontal and a vertical passage, the air entering at a and being directed by the vertical passages b on to the casting d which rests on a metal grating c.
Patent GB-178881-A (GB)
Title: Improvements in or relating to locomotives
IPC: B61C1/02
Filed: 1920-12-09
Abstract: 178,881. MacLeod, J., and Reid, Sir H. Dec. 9, 1920. Gear - boxes; gear - boxes, mounting and supporting. - In a turbine locomotive, the gears are carried in gear casings mounted on the axles by spherically-seated bearings. The casings are in part supported by means of brackets 14 on the bogie frames 13 which are supported in turn on the axle bearings through springs. The bottom of each gear casing is fitted with a removable false bottom 20 comprising a perforated plate covered with gauze and forming an oil-strainer to which access can be obtained through side doors.
Patent GB-1420314-A (GB)
Title: Swirl passage fuel injection device
IPC: D04B37/04
Filed: 1972-07-26
Abstract: 1420314 Fuel atomizers PLESSEY CO Ltd 17 May 1973 [26 July 1972] 34848/72 Heading F4T [Also in Division F1] A fuel injection device comprises a fuel injecting orifice 8, a fuel swirl chamber 24 adjacent the orifice and a non-return valve 12 positioned solely in the fuel swirl chamber, the device causing fuel to swirl in the swirl chamber during non-injection periods. Fuel from inlet 6 passes through passageway 20 and passages 34 into swirl chamber 24 and swirls around ball valve 12 when the latter is closed thereafter passing through passageway 22 to outlet 10. The nozzle is vibrated ultrasonically to commence injection. The fuel injection system may include a control device which times the vibration period and may limit it to part of the suction stroke for each engine cylinder.
Patent GB-618312-A (GB)
Title: Attache case fastener
IPC: A45C13/10
Filed: 1946-11-25
Abstract: 618,312. Automatic catches. DAVENPORT, R. Nov.'25, 1946, No. 34864. [Class 44] A catch for attache cases &c. comprises a spring blade a attached to the lid of the case &c., and a stud b having a lip c and a step d, fixed to the body, the spring blades having a rectangular or oval aperture in which the stud b engages. As the lid is pressed down, the outwardly curved end of the spring engages the stud, which then snaps into the aperture with the spring above the step; on release of the lid the spring snaps down over the step.
Patent GB-367047-A (GB)
Title: Improvements in vibratory sifting apparatus for treating potters' slip, powdered substances and the like
IPC: B28C1/20
Filed: 1930-11-20
Abstract: 367,047. Strainers. PODMORE, W., Consall Hall, Consall, and COLLIER, O. G., Lyndhurst, Baddeley Green, both in Stokeon-Trent. Nov. 20, 1930, No. 34897. [Class 46.] In apparatus for sifting potters' slip, powdered substances, &c. the sieve frame a is connected by bolts c to a resilient bar b clamped at its ends to a frame d and forming the armature of an alternating current electromagnet M. A bar e guided on pins e<2> and actuated by a spring e<9> carries a block f of fibre &c. bearing on the bar b. The sifting lawn a<2> is secured to the frame a by clamping its edges between plates a3.
Patent GB-798333-A (GB)
Title: Improvements relating to the production of sound-insulating coatings on walls and soforth
Inventor: DOLBEY NORMAN LOUIS
IPC: E04F21/16
Filed: 1955-12-07
Abstract: <PICT:0798333/III/1> A heat- and sound-insulating coating, e.g. on a wall or ceiling, is produced by spraying on to the surface a fibre, e.g. asbestos, with a liquid which is or reacts to form an adhesive and pressing the coating with a tool having irregularly spaced blunt projections so as to produce a stippled or random pattern on the surface.  Such a coating may also be produced by applying a first layer of fibre and adhesive, pressing either with a flat tool or board or with the tool described, and then applying a relatively thin layer of finer fibre and adhesive and again pressing with the tool described.  As shown, the tool comprises a moulded plastic sheet 3, having irregularly-spaced blunt projections 5, secured by screws 4 to a wooden board 1, provided with a handle 2.  The plastic sheet may be made by making tapered cavities in a dish-shaped mould, filling with a cold-setting polyester resin, introducing a reinforcing sheet of asbestos-fabric or glass-fabric, placing a flat mould part on top and maintaining under pressure until the resin has set.  Alternatively, the tool may be made by fastening lead shot or rivet heads to a wooden or metal float or by driving round-headed nails into a piece of wood. The linear dimensions of the projections may be from 1/16 to 3/8 inch and the average spacing between them 3/8 to 1 inch. According to the Provisional Specification, the tool can also be made by sticking ball-bearings, which may be of different sizes, to a wooden float by an adhesive.  Specification 368,368 is referred to.
Patent GB-1439003-A (GB)
Title: Self-driven machine in particular for agricultural use
IPC: B62D49/06
Filed: 1973-07-24
Abstract: 1439003 Harvesting machines R L A LEVEAU 24 July 1973 [31 July 1972] 35146/73 Heading A1F [Also in Division B7] In an agricultural machine comprising an engine unit 17 disposed in the vicinity of the rear differential 4 two front steering road wheels 5, 10 are supported in branches 9, 11 of a front yoke element, the steering mechanism for the wheels being contained in a cross-member 8 of the yoke and in the branches thus providing a free space. in the front for receiving working equipment 12 in the form of a maize pick-up constituting a chopper and ensiler. The cross-member 8, Fig. 2, has cylindrical bosses 33 on which are applied toothed discs 34, so that the branches 9, 11 may be locked by a screw threaded pin 36 and nut 37 in a chosen angular position. As shown in Fig. 2, the steering mechanism comprises a double acting cylinder device whose rod 41 is fixed to the cross member 8 and which is supplied with hydraulic fluid via a rotary directional valve 47, Fig. 1, actuated by the steering column 48. The body 38 comprising the drive element is connected, by two devices 51, 52' having a differential action, to one of the ends 53 of two flexible control means 54, 56 whose other end 57 is connected via a directional valve 74 to a device 58 controlling the orientation of the corresponding road wheel 5, 10. Each device 58 comprises a cylinder whose body 71 is movable and integral with two racks 86, 87, Fig. 3, which are engaged with gears 88, 89 fixed on a pivot 91 having a lower end integral with an arm 96 which supports the wheel. A harvest chopper which is secured to the yoke at a point located at the centre of cross member 8 and to brackets mounted on the front of branches 9, 10, discharges cut fodder in a passage 103, the chopper being driven by a shaft 104, having a double universal joint 105, 106 from a power take off 32. In another embodiment, Fig. 8 the device 58 controlling the wheel orientation is driven electronically in which an electronic servo 123 is connected to a wheel orientation detector 124 and actuates an electromagnetic directional valve 74, the servo 123 associated with the wheel 10 being further connected to an angular sensor 122 mechanically coupled to the steering column 48. A computor 125 is provided for receiving information relative to the wheel 10 orientation and supplies to the opposite servo 123 instructions as to the relative orientation required for wheel 5. The engine unit 17 drives a clutch 14 via power take off shaft 18 and pulley and belt arrangement 19. 23 with torque limiting device 21. A clutch 26 at the rear of engine unit 17 drives two splined shafts 31, 32 constituting rearwardly and forwardly extending power take-offs. A further power take off 16 is provided at the rear of gearbox 13. Instead of the movable part 38, Fig. 2, of a double-acting cylinder device, the drive element in the steering mechanism may be constituted by a rack engaged with a pinion driven by the steering column.
Patent GB-814767-A (GB)
Title: Apparatus for the heat treatment of rod-like articles
Inventor: ETCHELLS WILLIAM KENNETH
IPC: B21J17/00
Filed: 1956-11-17
Abstract: 814,767. Metal heating furnaces. ETCHELLS & SON Ltd., D., HEATHCOTE, F. W. T., and SIMS, F. W. Nov. 15, 1957 [Nov. 17, 1956], No. 35208/56. Class 51 (2). A furnace for heating metal pins comprises a rotary hearth 16 disposed on a pedestal shaft 20 and formed with a segmental wall 10 having holes 11 receiving the pins 12, a reciprocating feed member 26 and an electromagnetic discharge device 28 both mounted on opposite runs of an endless chain 30, and a disc 21 attached to the shaft 20 carrying indexing studs 22 corresponding to the holes 11 through which the hearth is rotated intermittently. The furnace is heated by oil burners 19 extending through oppositely disposed ports in a refractory cap 17 and having air pipes 47 extending from a main 48 and controlled by valves 49. The intermittent rotation of the hearth 16, with charging and discharging movements of the pins 12, are performed automatically as described below. The disc 21 is given the intermittent rotary movement by a radial slide 23 carrying oppositely directed, spring-loaded pawls 24, Fig. 1b engaging the studs 22, the slide being connected by a rod 36 to the pin 35 of a crank disc 34 driven by a motor 32 through reduction gearing 33. A connecting rod 36 also rocks a rod 37 pivoted at 38 and engaging a slide 39 connected to the endless chain 30 carrying the feed and discharge members 26 and 28. A feed hopper 27 has a pivoted wall section 39 oscillated by a motor 44 through a crank disc 43, connecting rod 42, and radius arm 41 to agitate the pins 12 which pass down a discharge throat to a pneumatically operated transfer segment 45 adapted to feed them in front of the retracted feeder 26. The latter pushes the rods over radial grooves 15 on a flange 14 of a segmental fence member 13, each groove being aligned with a hole 11. The cylinder 46 actuating the transfer segment 45 is controlled by a valve actuated by a trip on the crank disc 43. Automatic control is completed by one or more limit switches 29 which energize and de-energize the discharge magnet 28 so that it withdraws each pin in turn dropping it on to a discharge shoot.
Patent GB-523401-A (GB)
Title: Moulding method and apparatus therefor
IPC: B29B13/00
Filed: 1938-12-05
Abstract: 523,401. Moulding golf balls &c. DUNLOP RUBBER CO., Ltd., and WILLSHAW, H. Dec. 5, 1938, No. 35328. [Class 87 (ii)] Relates to supplying hot and cold water or other media to moulds for making golf balls or other small articles. The moulds are supported by rods in superimposed fashion in containers 17 mounted on a rotary table 16 carrying tanks 20 connected by pipes with the containers which have syphon overflow pipes 25 arranged above a stationary supply tank 11 divided by partitions into compartments for hot, cold and chilled water respectively. Water from the compartments is pumped to heating and cooling plants and is delivered by stationary distributers to the tanks 20 which are supplied with overflow pipes 27. Water is supplied simultaneously to all the tanks except one arranged over a ram 80, where the containers are loaded with moulds that are forced together by the engagement of the ram with a nut-retained spindle 49. When a container has been moved past the ram, hot water is admitted, and the moulds are further pressed together by a second ram. As the container is moved from point to point, hot, cold, and finally chilled water is circulated. When it again reaches the ram 80, the cover is removed, and it is recharged with moulds.
Patent GB-1347884-A (GB)
Title: Process for cracking sulphuric acid
IPC: C01B17/88
Filed: 1971-07-28
Abstract: 1347884 Sulphur dioxide; sulphuric acid CHEMIEBAU DR A ZIEREN GmbH & CO KG 28 July 1971 [29 July 1970] 35357/71 Heading C1A Aqueous sulphuric acid containing 30 to 60% by weight of H 2 SO 4  with or without organic impurities and ammonium salts is cracked at from 900 to 1200 C. using hydrocarbons as fuel, thus producing SO 2 , water being evaporated from the dilute acid by direct heat exchange with said hot cracked gas at a temperature of from 900 to 1100 C. thus concentrating the acid supplied to the cracking to 60 to 75% by weight. The aqueous sulphuric acid prior to entering the concentration stage may be heated to 40 to 100 C. by heat exchange with the concentrated acid. During the concentration the cracked gas may be cooled to 100 to 350 C. and after it has passed through the concentrator it may be washed with sulphuric acid, thus lowering its temperature to about 30 to 40 C., and condensing out any water vapour. SO 2  and/or H 2 SO 4  in the condensed water may be stripped out by means of air in a stripping column, the air laden with SO 2  being added to the cracked gas prior to cooling or used as combustion air in the cracking step. After any necessary wet electrostatic gas purification, the cracked gas may be converted into pure concentrated H 2 SO 4 , e.g. by the contact process. As shown, acid to be cracked is pumped from a storage vessel 8 through heat exchangers 4 and 10 to the top of a concentrator 3, into which it is sprayed meeting an ascending stream of hot cracked gas. The hot concentrated acid gives up some of its heat to the dilute acid to be concentrated in the heat exchanger 4 whence it is pumped via storage tank 5 and pump 6 to the cracker 1. The necessary cracking temperature (900-1200 C.) is obtained by burners 9 which may operate using natural gas or a sulphur-containing fuel oil. The cracked gas flows into a chamber 2 to which air is supplied in order to remove residual combustible materials and then passes at about 1000 C. into the concentrator 3.
Patent GB-1097707-A (GB)
Title: Improvements in pure fluid amplifier compensation network
IPC: F15C1/14
Filed: 1965-08-19
Abstract: 1,097,707. Fluid amplifiers. GENERAL ELECTRIC CO. Aug. 19, 1965 [Sept. 23, 1964], No.35721/65. Heading G3H. A proportional plus integral pure fluid amplifier comprises control signal inputs 10, 11 which lead through passages 14, 15 to an amplifier 19 to control the deflection of a power jet 22 between outlets 27, 28 to provide the proportional action. The inputs 10, 11 are also fed to an amplifier 33 having outputs which form control signals for an amplifier 45 which in turn has outputs forming the control signals of an amplifier 57. The outputs from the amplifier 57 are fed into capacitors 70, 71 having outlets 72, 73 which form second control signals for the amplifier 19 to provide the integral action. The inlets to the capacitors are provided with rods 76, 77 to break up the fluid-flow. Each amplifier has a vent between the two outlets and one between each outlet and a control inlet.
Patent GB-618757-A (GB)
Title: Automatic fire-arm with a one-piece breech block
IPC: F41A3/38
Filed: 1946-12-03
Abstract: 618,757. Machine guns. VERWALTUNGSGES DER WERKZEUG-MASCHINENFABRIK OERLIKON. Dec. 3, 1946, No. 35826. Convention date, Dec. 6, 1945. [Class 92 (ii)] Relates to breech block locking devices for automatic guns, and consists in means whereby an energy accumulator comprising two parts 7, 8 capable of movement relative to each other, is used to operate a locking lever 10 pivoted in the breech casing. In the form shown, the breech block 4, when released from a rear position by a sear, moves forward under the action of a recuperator spring. Wings 18 on the breech block engage with shoulders 17 on the rear part of the accumulator and carry it forward against the action of precompressed spring 9 mounted within the accumulator, the rear part of which overlaps a projection 19 on the locking lever 10 maintaining it in the unlocked position. Movement of the forward part of the accumulator is prevented by its cross-web 15 engaging behind the locking lever 10. As the breech block approaches the front part of its travel, the rear part 8 of the accumulator disengages from the locking lever and gives the front part an impulsive blow which assists the action of the spring 9 and causes the inclined face 16 of the web 15 to force the locking lever into engagement with a surface 20 at the rear of the block. The web then travels into a position below the lever, Fig. 7, and holds it firmly in the locked position. Cocking and release of the firing pin are effected by two levers mounted at right angles to each other, the lower end of one being carried in a recess 22 in the front end of the accumulator, the upper end actuating the second lever which is mounted in the horizontal plane and engages with the firing pin. Unlocking of the breech block is effected by a gas-operated piston 28, Fig. 8, which pushes back the front part of the recuperator, thereby removing the web 15 from beneath the locking lever 10 when the compressed spring of the accumulator forces back the breech block causing inclined surfaces 20 and 21 on the locking lever and the breech block to force the locking lever into the released position. Alternatively, the recoil of the gun may be used in place of the gas piston to actuate a lever carried by the breech casing which will force the front part of the accumulator back when the gun recoils on firing. Modifications described include a pair of accumulators mounted at the sides of the block adapted to engage, either behind the block as previously described or in slots near the front of the block to shorten the gun.
Patent GB-876554-A (GB)
Title: An improved tea infuser
IPC: A47J31/50
Filed: 1958-11-08
Abstract: A perforated receptacle to hold tea for infusing in an urn is made of plastic with swivel or sliding-off bottom and has lifting out lugs and may have means for fixing it to the side of the urn by lugs on the urn wall.  The body may be moulded with grooves into which the bottom can be slid.
Patent GB-156094-A (GB)
Title: Improvements in vacuum fuel feed tanks
IPC: F02M37/02
Filed: 1920-12-22
Abstract: 156,094. Garnier, L. Dec. 31, 1919, [Convention date]. Addition to 138,587. Vacuum apparatus.-In vacuum fuel-feed apparatus as described in the parent Specification, the air valve P is lifted by the combined action of the spring M and the float F. The suction valve T carries a pin 6 which passes through a slot 14 in the stem of the valve P, through slots I<1> in the float guide S, and through slots 15 in a sleeve carried by the float. As the float rises a bridge-piece K on the float presses the spring M against the end of the valve stem, and when the bottom of the slots 15 engages the pin 6 the suction valve T is closed. When the pin 6 engages the top of the slot 14, the float acts directly on the stem of the valve P and assists the spring M to open it. The suction pipe 7 has a non-return valve 9.
Patent GB-1418060-A (GB)
Title: Separation and purification of platinum group metals and gold
IPC: C22B3/06
Filed: 1973-07-27
Abstract: 1418060 Separating platinum group metal mixtures. SWARSAB MINING EXPLORATION & DEVELOPMENT CO (PTY) Ltd 27 July 1973 [10 Aug 1972] 35945/73 Heading C7D Platinum group metals containing Rh and/or Ir and optionally gold are, (1) fused with a flux (e.g. Na 2 CO 3  with optional additions of a melting point depressant such as borax or fluorspar), a lead compound (e.g. oxide sulphide, acetate formate, carbonate or sulphate) and optionally a reductant (e.g. carbon or charcoal) to form a lead containing alloy from which the slag is removed; (2) the alloy is leached with HNO 3  to remove Pb; (3) the residue is leached with aqua regia to remove Pt, Pd, Au (if present) and some Rh; (4) the leach solution from (3) is evaporated to dryness and the deposit roasted at 575-625C to render the Rh aqua regia insoluble; (5) the roasted residue is leached with aqua regia to remove Pt, Pd and any Au present, the residue being combined with the solid residue from (3) as a feed for a separation process. Prior to (1) a sludge may be leached in aqua regia, the residue going to (1) directly and the solution being treated with sodium bromate and sodium carbonate to precipitate Pt from the other platinum group metals and Au, the precipitate being included in (1). The solution from (3) may be treated with H 2 SO 4  to remove Pb and any platinum group metals dissolved in (2) may be precipitated by addition of formic acid.