baber/WOPTO huggingface dataset:
Patent GB-894147-A (GB)
Title: Extrusion process and apparatus
IPC: B29C48/08
Filed: 1959-11-10
Abstract: Thermoplastic organic polymers are formed into thin films by extruding a molten film of the polymer on to the surface of a rotating roll maintained at a temperature below the solidification temperature of the polymer and, while the film is still plastic and supported by the roll, directing on to the film surface opposite to that in contact with the roll a stream of gas (inert to the polymer) having sufficient velocity to prevent occlusion of air between the film and the roll.  The stream of gas is preferably directed on to the film surface along the line along which the molten extruded film initially contacts the metal roll or shortly thereafter, the film in the latter case being still in contact with the roll.  The stream of gas is preferably in the form of a thin flat travelling sheet which impinges on the film in a transverse line.  The gas sheet may be perpendicular to the film, but is preferably at an acute angle to the tangent of the portion of the film on which the gas sheet impinges, preferably in the direction of rotation of the chilled roll.  Two or more streams or sheets of gas may be directed on to the same portion of the film, preferably travelling in planes which are at different angles to the tangent of the impingement area.  The thickness of the stream of gas may be between about 0,001 inch and 6 inches. The temperature of the gas stream is preferably about 32 DEG  F. to about 300 DEG  F.  The invention enables relatively high extrusion speeds to be used without loss of film quality.ALSO:Thermoplastic organic polymers are formed into thin sheets by extruding a molten sheet of the polymer on to the surface of a rotating roll maintained at a temperature below the solidification temperature of the polymer and, while the sheet is still plastic and supported by the roll, directing on to the sheet surface opposite to that in contact with the roll a stream of a gas (inert to the polymer) having sufficient velocity to prevent occlusion of air between the sheet and the roll.  The stream of gas is preferably directed on to the sheet surface along the line along which the molten extruded sheet initially contacts the metal roll or shortly thereafter, the sheet in the latter case being still in contact with the roll.  The stream of gas is preferably in the form of a thin flat travelling sheet which impinges on the sheet in a transverse line.  The gas sheet may be perpendicular to the sheet, but is preferably at an acute angle to the tangent of the portion of the sheet on which the gas sheet impinge preferably in the direction of rotation of the chilled roll.  Two or more streams or sheets of gas may be directed on to the same portion of the sheet, preferably travelling in planes which are at different angles to the tangent of the impingement area.  The thickness of the stream of gas may be between about 0,001 inch and 6 inches. The temperature of the gas stream is preferably about 32 DEG F to about 300 DEG F.  The invention enables relatively high extrusion speeds to be used without loss of sheet quality.
Patent GB-979008-A (GB)
Title: 10-cyano-19-nor-steroids and process for producing 19-norsteroids
Inventor: ERCOLI PROF ALBERTO
IPC: C07J5/00
Filed: 1962-10-09
Abstract: The invention comprises steroids of the general formula <FORM:0979008/C1/1> wherein X represents <FORM:0979008/C1/2> and R represents hydrogen or an acyl group containing up to 8 carbon atoms, 10-carboxy-19-nor-5-androstene-3b , 17b -diol and 10-carboxy-19-nor-5-pregnene-3b , 20b -diol, and a process for the preparation of the diacyloxy compounds of the above general formula by dehydrating with phosphorus oxychloride 19-oximino-3b -17b -diacyloxy-5a -androstan-6b -ol or the corresponding 5a -pregnane, or the nitroso-dimer corresponding to either compound, or a mixture of the 19-oximino compound and the corresponding nitroso dimer and, when required, hydrolyzing the acyloxy groups with methanolic potassium or sodium hydroxide to form the free hydroxy compounds of the above general formula. The resulting 10-cyano-19-nor-3b , 17b -dihydroxy (or 3b , 17b -diacyloxy)-5-androstene or -5-pregnene may be reacted with an alkali metal hydroxide in an aqueous alcoholic solution at a temperature of from 150 DEG  to 200 DEG C. to form 5-androstene-3b , 17b -diol-10-carboxylic acid or 5-pregnene-3b , 20b -diol which may be oxidized with chromic acid in acetone solution to form the corresponding carboxy-3, 17- or -3, 20-diketo-steroid and then converted into 19-nor-androstenedione or 19-nor-progesterone by the action of heat, acetic acid and Girard's reagent P or T. 19-Oximino-3b , 17b -diacyloxy-5a -androstan-6b -ol and the corresponding nitroso dimer, and 19-oximino-3b , 17b -diacyloxy-5a -pregnane-6b -ol and the corresponding nitroso dimer are prepared by reducing 3b , 17b -diacyloxy-5a -androstan-6-one or 3b , 20b -diacyloxy-5a -pregnan-6-one respectively with sodium borohydride to form the corresponding 6b -ol, treating this compound with nitrosyl chloride to form the corresponding 6b -nitrite, and subjecting the nitrtie to irradiation to form the oximino compound which may be in the form of the nitroso dimer.
Patent GB-1457472-A (GB)
Title: Method of packing a plurality of pneumatic vehicle tyres
IPC: B65D85/62
Filed: 1974-09-03
Abstract: 1457472 Packaging pneumatic vehicle tyres CONTINENTAL GUMMI-WERKE AG 3 Sept 1974 [8 Sept 1973] 38347/74 Heading B8C In a packing of a plurality of pneumatic vehicle tyres 5 in the form of several layers of tyres partly overlapping one another in a roofing tile manner the tyres are compacted to a fixed end state, with the direction of overlap alternating between the layers, and are secured against resilient recoil. In a method of packing a plurality of pneumatic vehicle tyres 5, also according to the invention, the tyres, partly overlapping one another in the manner of roofing tiles, are stacked one upon the other in several layers with the direction of overlap alternating between adjacent layers, the stacked tyres are subjected to a compressive force acting predominantly in a direction normal to the plane of the layers, and, upon reaching a compacted end state, are secured against resilient recoil, the force being subsequently removed. As shown, a large number, e.g. fifty or more, tyres 5 are stacked, in two adjacent rows in layers, as described above, upon a temporary stacking plate 4 the tyres at the ends of the stack being placed upright to support the stack end faces. The stack is compressed in the direction P by a plate 7 until the terminal state of the compression required is reached whereupon the stack is enveloped in a tensile sheet 6 made endless by a weld seam 16. The sheet 6 made, e.g. of heat-shrinkable thermoplastics, may be replaced by tension-resistant material such as fabric, or net, and provided with reinforcing liners. One, or more, tension-resistant strips, cords, or the like, may be looped around the compressed tyres. The packing may include a palette, stacking plate, or a semi-rigid cardboard panel. Tyres of different external dimensions can be used in non-adjacent layers, or rows. A container may receive the packing.
Patent GB-818840-A (GB)
Title: Improvements in or relating to electrolytic cells
IPC: C25C7/02
Filed: 1957-12-10
Abstract: 818,840. Fused-electrolyte apparatus. DU PONT DE NEMOURS & CO., E.I. Dec. 10, 1957 [Feb. 20, 1957], No. 38379/57. Class 41. A cell for electrolysing fused salts comprises a carbonaceous, e.g. graphite, anode 21 extending vertically into the cell from the bottom, the lower end of the anode 21 being rigidly fastened into a carbonaceous, e.g. graphite, base block 2 which is adapted to hold the anode 21 in the vertical position and to serve as an electrical conductor between the anode 21 and an external electrical power source. The anode 21 is cylindrical and may make threaded engagement at its lower end with a socket in the block 2, as shown, or may be tapered conically and engage a similar shaped socket in the block, graphite pins anchoring the anode in the block. Alternatively, a peg in the anode base may engage a slot in the block. A single anode or a plurality may be employed. Metal wings 8 lead current from a bus-bar to a steel box 4 containing the block 2, the cell construction being similar to that described in Specification 668,691, a metal 10, e.g. Wood's metal, which is liquid at the operating temperature, filling a space between the box 4 and block 2. The diameter of the anode should be at least 5 per cent, and preferably 20 to 30 per cent, shorter than the side of the horizontal cross-sectional shape of the cell. Where tapered anodes are employed, the angle of taper.should be 3 to 15 degrees, and preferably 70 to 10 degrees, to the vertical. Specification 238,956, [Class 41], also is referred to.
Patent GB-1125511-A (GB)
Title: A frequency control system
IPC: G01S7/526
Filed: 1966-08-26
Abstract: 1,125,511. Digital frequency measurement. HUGHES AIRCRAFT CO. 26 Aug., 1966 [13 Sept., 1965], No. 38418/66. Heading G4H. [Also in Division H3] An input sine wave is converted by a zero crossing detector 82 into pulses which are fed to a counter 84. At the start and stop of counter 84 a gate 88 is respectively opened and closed to allow clock pulses to pass from the source 86 to a second counter 85, which may re-cycle during the period determined by the counter 84. The residual count at the end of the period represents the frequency (or deviation from a predetermined frequency) and is converted into an analogue voltage by converter 62.
Patent GB-1189455-A (GB)
Title: Improvements in electrical installations
IPC: H02J7/22
Filed: 1967-08-23
Abstract: 1,189,455. A.C. generators with D.C. field windings. ROBERT BOSCH G.m.b.H. 23 Aug., 1967 [3 Sept., 1966], No. 38725/67. Heading H2A. [Also in Division G3] In an electrical installation comprising a multiphase generator 10 to whose output are connected a first rectifier set 13 for supplying direct current to a load, e.g. a battery 15, and a second rectifier set 14 for supplying direct current to the generator field winding 12, a voltage regulator 19 is connected both to a diode 27 connected to the second rectifier set 14 and to at least one resistive component connected to a switch 33, such as an ignition switch, leading to the first rectifier set 13. The installation is for use in a motor or railway vehicle, and the regulator 19 may be of the electromagnetic type shown or of the transistorized type. The resistive component may be a low value resistor 29, and the switch 33 is coupled to a further switch 36 in a lead 35 to other, e.g. ignition, loads. A second diode 28 may be connected in series with, or alternatively form, the resistive component.
Patent GB-1048178-A (GB)
Title: A mine surge car
Inventor: ELDRIDGE EDWARD JACK
IPC: E21F13/02
Filed: 1965-09-10
Abstract: 1,048,178. Endless conveyers. PLACER EXPLORATION Ltd. Sept. 10, 1965, No. 38770/65. Heading B8A. A mine car is adapted to be releasably coupled at 5 (Figs. 1 and 3, not shown) to a mining machine (not shown) and receives the output of the latter in a storage hopper 1. A boom 20 with a conveyer 41 feeds coal from the hopper to a shuttle car (not shown). While the latter is in transit, a storage conveyer 37 which normally carries coal from the mining machine end to the boom end of the hopper 1, is either shut down or made to inch along. The boom can be deflected to the right or left by the action of respective hydraulic jacks 32, 32. It can be elevated by jacks 15. Tension on the chain of the boom conveyer 41 is maintained by springs 63 acting on the respective pivot ends 59 of the return idler 53.
Patent GB-350583-A (GB)
Title: Improvements relating to fire extinguishing apparatus
IPC: A62C5/00
Filed: 1929-12-18
Abstract: 350,583. Fire-extinguishers. McKEAN, J. M., 15, Cefn Parc, Skewan, Glamorgan. Dec. 18, 1929, No. 38777. [Class 47 (ii).] In an inversion extincteur of the kind in which the inner and outer vessels d, a are both sealed by a single valve j, a mixing chamber r for the two liquids is formed by a separate cap c which is screwed on to the neck b of the outer vessel. The liquids are discharged directly into this mixing chamber. The stem l of the valve is urged upwardly bv a spring n, and is held with the valve in closed position by a bayonet joint m. The nozzle o tapers, as at p, to a point of maximum constriction, and then expands, as at g. Vent holes s are provided for relieving excessive pressure.
Patent GB-342841-A (GB)
Title: Apparatus for automatically developing photographs
IPC: G03D3/12
Filed: 1929-12-18
Abstract: 342,841. Automatic developing apparatus. LIBERMAN, A. I., 28, Rue Bobillot, Paris. Dec. 18, 1929, No. 38791. [Class 98 (ii).] In a portable automatic developing apparatus in which the tanks are each provided with separate conveyer bands and are adapted to be hermetically seated when not in use, the tanks are separately removable from the apparatus. In one form, each tank comprises upper and lower parts 2<1>, 2. The upper part 2<1> carries the mechanism for conveying the photograph through the tank and has extensions 3, 4 which are introduced by sliding into the top 5 of a casing 1. The lower part 2, containing the treating liquid, is held away from the upper part 2<1> by a flat spring 26 or spiral spring 28. The two parts may be brought together when the apparatus is not in use by a clamp 30, a flexible lining 29 ensuring that the tank is hermetically closed. The photograph enters the tank between the upper and lower parts and is engaged at its edges between a roller 14 and a pair of endless bands one of which 8 is shown. Rollers 18, 15, 17, 16 and fixed guides 38 .. 41 hold the photograph against the endless bands and guides 24, 25 lead it out of the tank into the next tank. The endless bands are driven by the roller 13 the spindle of which, when the tank is inserted, engages main gearing which may be driven by hand. The apparatus may be integral with a camera or may have lugs 3a for receiving a standard form of camera 2a from which the exposed strip is led through slots 2<1>a and engaged between rollers 5a, driven through a clutch, and guides 6a, 7a. A hand-operated guillotine 15a severs the strip which is then fed by rollers 8a into the series of tanks. Means for inspecting the progress of development may comprise windows of red glass in the tanks and casing. Preferably the apparatus is provided with inspection tubes 18a, which, in use, are pressed inwards against the action of a spring thus pushing aside shutters 21a causing the circuit of a red lamp in the interior of the tanks to be closed.
Patent GB-1028229-A (GB)
Title: Microwave coupler
IPC: H01P5/08
Filed: 1963-10-03
Abstract: 1,028,229. Waveguide couplings. VARIAN ASSOCIATES. Oct. 3, 1963 [Oct. 3, 1962], No. 39044/63. Heading H1W. [Also in Division G1] A microwave coupler comprises a short wave transmission section 6 having an axial coupling probe 4 at one end and a coupling loop 7 at the other end. the loop being rotatable about the axis of the section 6 to provide variable coupling from the waveguide 1 to the cavity resonator 2. The end 9 of the loop may make sliding contact with the wall of the transmission section 6, and the loop and probe may be moved axially to vary the probe penetration 11 for matching to the waveguide 1. The coupler may be used as the power imput of an electron paramagnetic resonance apparatus, and provision may be made for optically illuminating the interior of the resonator.
Patent GB-1212625-A (GB)
Title: Hydraulic control apparatus
IPC: G05D16/00
Filed: 1968-08-15
Abstract: 1,212,625. Hydraulic control apparatus. VON ROLL A. G. Aug. 15, 1968 [June 14, 1968], No.39131/68. Heading G3P. A control apparatus for adjusting the stroke volume of at least one hydraulic unit as a function of the operating pressure (line 6), comprises a pre-control valve unit 7 including a pre-control piston 9 acted upon by the operating pressure and a first adjustable spring system 10, a servo arrangement co-operating with the pre-control valve unit, the servo arrangement incorporating at least one servopiston unit 17 acted upon by a regulated quantity of fluid from the pre-control unit 7, an adjustment element 5, the servopiston unit acting on the elements, and a second adjustable spring system 24 acting on the piston 17 against the action of the force on the first spring system 10 via at least one connecting element 21. The operating fluid in line 6 pressurizes compartment 12, an upward movement of the piston 9 causing fluid from pump 13 to enter the servo unit via line 15, and a downward movement causing the fluid from the pump 13 to enter the unit 17 via line 16. Any change in the operating pressure causes a change in the stroke volume of the hydraulic unit via adjusting member 5 in such a way as to keep the output of the pump (volume x pressure) constant. This is achieved by using a differential spring system 24. In another embodiment Fig. 4 (not shown), the stroke volumes of two pumps are adjusted using a single pre-control valve unit (28) and a rigid adjusting member (29). Alternatively a non-positive connection 46 can be made Fig. 5. In this embodiment a guide arm 42 is rigidly connected to the servopiston 40, the arm having stops 44, 45 so that the control apparatus only regulates the threshold valves of the stroke volume. In the embodiment according to Figs. 7 and 8 (not shown), a displaceable support (53) co-operates with the connecting element (52). Due to this arrangement it is possible to adjust the maximum permissible operating pressure. The embodiments of Figs. 9, 10 and 11, 12 (not shown) provide separate control mechanisms for the two pumps and a common second spring system.
Patent GB-1057239-A (GB)
Title: Method of vapour deposition by use of electron beam bombardment
IPC: H01B3/00
Filed: 1964-09-25
Abstract: In a method of vapour depositing a fusible dielectric material, e.g. a low melting point high lead content, solder glass 35, upon a metal screen 10, the material is bombarded by an electron <PICT:1057239/C6-C7/1> beam 37 which is rapidly pulsed between upper and lower beam current levels, the latter level including zero, to avoid both sputtering of the material and the separate evaporation of its constituents. The screen 10 is mounted on a rotatable carrier 29 to ensure uniform deposition.  Initially the material 35 in the form of a powdered glass frit is bombarded by a defocussed beam 36 to melt the frit which is then allowed to cool to form a vitrified or fused body.
Patent GB-1341349-A (GB)
Title: Systems for handling annular coils of rod
IPC: B21F33/00
Filed: 1972-08-23
Abstract: 1341349 Transferring wire coils JERVIS B WEBB CO 23 Aug 1972 [24 Aug 1971] 39267/72 Heading B3E [Also in Division B8] A conveyer system for annular wire coils comprises coil carriers each suspended from a load carrying unit of an overhead conveyer, each carrier having a base and a mandrel extending therefrom to project through a coil, and carrier handling apparatus at a processing station operable to detach the carrier from the load carrying unit. In the Fig., each carrier comprises a base 28 and each mandrel consists of three members forming a tapered nose 34 with a transverse aperture 36 for engagement with a hook 24 depending from load supporting tracks 19 which form a loop passing both ends of the coil forming station shown. A shuttle 50 is movable laterally of the conveyer track on rails 52. A first carrier is stopped over the shuttle, and the rails and shuttle raised by jacks 64. Movement of the shuttle to the left disengages the carrier from hook 24, and locates it over a platform 67 which is then raised by jack 68 to insert the mandrel into a ring gathering tub 40, where pre-formed coil rings drop over the mandrel. The shuttle is lowered and returned to the right, the filled carrier is lowered on to it by jack 68, and another empty carrier is also located over it. The shuttle is then raised and moved to the left, engaging the filled carrier on a hook 24, and positioning the empty carrier over platform 67. This cycle is repeated. The filled carriers are then conveyed to a station where the carriers are tilted so that the mandrels are horizontal, and the coils are compacted and banded, see Fig. 4 (not shown).
Patent GB-370478-A (GB)
Title: Device for indicating the change of the direction of travel and the stoppage of motor cars with indicator lights adapted thereto
IPC: B60Q1/36
Filed: 1930-12-31
Abstract: 370,478. Road - traffic signals on vehicles. LELOUP, A. F. E., Avenue de St. Ouen, Paris. Dec. 31, 1930, No. 39345. Convention date, Dec. 31, 1929. [Class 118 (ii).] Comprises a stationary outer tube attached to the vehicle, a member slidable within the tube and provided with an indicator lamp or lamps, and a piston carried by the slidable member and operated by the exhaust gases under the control of a valve which also carries a switch for the lamp illuminating circuit. The inner tube B is adapted to slide in the outer tube A a flange B<1> forming a piston. The tube B encloses three small-bore tubes F, G, H embedded in insulating material which fills the tube C. Stems I, J, K pass through the smallbore tubes to holders N for red and green lamps. Pipes D, E convey the exhaust gases to the piston B. Two springs L, M surround the ends of the tube B to absorb shocks. A distributor for the exhaust gases comprises a circular fixed member o and a movable member P provided with a knob or handle. The fixed member o is furnished with three insulated spring ball contacts f, g, h and with three holes i, j, k to which pipes O, D, E for exhaust gases lead, one for inlet and two for exhaust. The member P has a cavity n, shown by the shaded lines, that covers the inlet and alternately the holes i, k. The member P has a square hole to receive the handle and is provided with three screws supporting the contact strip r which is adapted to engage the contacts f, g, h for the lamps. The exhaust gases are brought to a reservoir consisting of a cylinder with rounded ends to one of which the exhaust. pipe is connected through a non-return valve. The other end of the cylinder is connnected to the distributor. With the handle at rest and downwards, the orifices j, k are in communication. The three contacts f, g, h are disconnected and the lamps not lit. On turning the handle to the right, the member P is turned clockwise and the pressure is admitted to the piston B. In a second form the distributing valve is adapted to serve two signal devices one on either side of the vehicle.
Patent GB-853169-A (GB)
Title: Improvements in or relating to electro-photographic copying apparatus
Inventor: FRANCIS FREDERICK GEORGE
IPC: G03G15/09
Filed: 1957-12-19
Abstract: 853,169. Electrophotographic processes. CARIBONUM Ltd. Dec. 16, 1958 [Dec. 19, 1957], No. 39531/57. Class 98(2) In the automatic xerographic contact printer of Specification 853,168 for successively charging, contact printing, powder developing and fixing the powder image on copy paper having a photoconductive insulating layer, the electrostatic charge image bearing paper passes between a magnetic brush charged with toner powder and a rotating brush forming magnet. As shown, the copy paper is fed upwards from a rotating transparent contact-printing cylinder on the underside of a brass plate 52. A quatrifoil bar-magnet forms a brush 54 of iron carrier particles mixed with triboelectrically charged toner powder and its anti-clockwise rotation produces a rising and falling movement of the brush and a rolling movement of the carrier particles over the copy paper which moves between the brush and plate 52. Carrier particles which are depleted of toner powder fall from the magnetic brush and are deflected by blade 55 on to vibrating tray 56. Tray 56 is pivotally mounted on resilient links 72 and connected with an electromagnetic vibrator (Fig. 1, not shown) which moves the particles to the rear end of the tray. A further vibrating tray 58 is mounted on flexible links 74 and feeds the particles to the magnetic brush. Fresh toner powder is added at the rear of tray 56. Specification 853,170 also is referred to.