baber/WOPTO huggingface dataset:
Patent GB-544124-A (GB)
Title: Improvements in and relating to electric converters
IPC: H01J25/24
Filed: 1939-07-13
Abstract: 544,124. Cathode-ray tubes; thermionic valve circuits. BRITISH THOMSON-HOUSTON CO., Ltd. July 13, 1939, No. 20424. Convention date, July 15, 1938. Addition to 518,015. [Classes 39 (i) and 40 (v)] Frequency changing devices of the kind described in the parent Specification comprise a metal envelope 10 divided by apertured metal diaphragms 18, 30, 65, 66, 67, into spaces each of which houses a tubular electrode 34, 69, 70, 71. The beam from the cathode traverses all the electrodes, is reversed by an electrode 74 to traverse back again through the electrodes 71, 70 and is finally collected on the diaphragm 65. Potentials corresponding to signals at the input circuit 41 are applied to the electrode 34, and the velocity modulated beam is further modulated by potentials at a different frequency applied to the electrode 71 from the tuned circuit 73. The reversed portion of the beam contains components corresponding to the signal and oscillator frequencies as well as to the sum and difference, and maintains the circuit 73 in a state of oscillation. In its passage through the electrode 70, the reversed portion of the beam, excites the output circuit which is tuned to an intermediate frequency. To prevent re-action between the electrode 70 and the velocity modulated beam, the electrode 69 is connected directly thereto. The lengths and spacing of the electrodes 69, 70 are such that their effects on the beam cancel out. In a modification, Fig. 2 (not shown), an arrangement for frequency mixing and superregenerative detection is accomplished in a single device. The beam modulated by the signal and also by a local oscillator is coupled to a circuit of intermediate frequency, which is kept in oscillation by the returning low velocity components of the beam. The reversing electrode, which is a collector for the high velocity components of the beam, is connected to the output circuit and also to a circuit supplying quench oscillations of super-audible frequency lower than the intermediate frequency.
Patent GB-637122-A (GB)
Title: Pipe expansion joints
IPC: F16L51/02
Filed: 1947-07-29
Abstract: 637,122. Expansion joints. AKT.-GES. FUR TECHNISCHE STUDIEN. July 29, 1947, No. 20461. Convention date, Aug. 7, 1946. [Class 99(i)] Pipes 3<SP>1</SP>, 3<SP>2</SP> subjected to high internal pressure and high temperatures are connected by a comparatively thin and flexible hollow member 14, which may be a currugated tube, surrounded by a space 15 the pressure in which is substantially the same as that of the pipes so that the member is not subjected to any substantial pressure difference. As shown, vessel 18 connected to the pipe 3<SP>2</SP> is partially filled with a liquid which is forced into the space. In a modification, the space 15 is bounded by bellshaped extensions of both pipes, and in a further modification heat-insulating material is interposed between the flexible member and a pipe arranged co-axailly within the pipes 3', 3'.
Patent GB-261110-A (GB)
Title: Improvements in or relating to means for supplying power to thermionic valves
IPC: H04B15/00
Filed: 1925-08-15
Abstract: 261,110. Wright, G. M. Aug. 15, 1025. Thermionic amplifiers.-The plate potential of thermionic valves is supplied from a power circuit or the like, in such a way that a change in the supply potential is compensated for by a change of opposite effect in the grid potential, thus maintaining the effective output of the valve independent of the supply current variations. In the transformer-coupled amplifier shown in Fig. 1, a resistance NP is connected across the supply mains M, and opposite ends N, Pare connected to the grid and plate circuits respectively of the valve V. The filament is connected to a point F on the resistance such that FP/FN is equal to the amplification factor of the valve. The plate current is thus unaffected by alteration in the supply voltage, and such alterations produce no effect on the output circuit O, O. For the resistance-coupled amplifier shown in Fig. 2, the negative end N of the resistance NP is connected to the filament, and the opposite end P to the plate through the coupling-resistance R, an intermediate point F being connected to the grid circuit. If a is the slope of the grid-volts platecurrent characteristic of the valve, the point F is chosen so that NP/NF is equal to Ra; any change in the supply voltage then results in no change of plate potential, and therefore no effect on the output circuit O, O. A battery may replace the coupling-condenser C. When plate current is supplied by a local generator, an extra brush on the commutator may provide the intermediate tapping, the resistance NP being omitted. Condensers may be shunted across the resistance sections, their reactances being in the same ratio as the resistances. The directcurrent plate supply may be derived by rectification from A.C. mains. The invention may be applied to the elimination of audible hum in wireless receivers due to supply ripple, and to valves employed in central telegraph offices to prevent direct current bridges from being thrown out of adjustment by changes in the supply voltages.
Patent GB-713290-A (GB)
Title: Improvements in boots or shoes
IPC: A43B21/52
Filed: 1952-08-15
Abstract: 713,290. Shoes. BENAVIDES, A., PICCOLI, A., and MENGUEZ, C. A. Aug. 15 1952, No. 20552/52. Class 17(2) A shoe, which may be adapted to different usage by fitting a heel of a different height, comprises co-operating means between the sole and heel whereby the heel is releasably secured in position, a curved shank stiffener 1 which lies between the inner and outer soles and is secured at its heel end to the outer sole to extend forwardly to the inner or rear end of the tread portion of the sole, and a transverse groove 2 adjacent the forward end of the arch of the sole to enable it to adapt itself to the variations of heel heighte, A numeber of constructions for detachably securing a heel are described.
Patent GB-478007-A (GB)
Title: Improvements in or relating to solid fuel heating appliances
Filed: 1936-07-24
Abstract: 478,007. Solid-fuel stoves. DAVISON, July 24, 1936, No. 20576. [Class 126] Solid fuel discharged from a hopper 1 on to a deadplate 2 travels along an inclined grate 3 to a substantially horizontal active grate 4 through which alone combustion air is admitted. Air may be prevented from reaching the grate 3 by an ashpit wall 9, or the grate 3 may be solid. The inclination of the grate 3 is such that the thickness of the fuel remains uniform and the rate of delivery is regulated by a slide 5 so as to allow the fuel to be brought nearly to its ignition temperature before reaching the grate 4. Means may be provided for admitting additional air above the grate at starting. A refractory wall 13 prevents the flames from impinging directly on the oven 14.
Patent GB-614282-A (GB)
Title: Improvements in the finishing of textile fabrics made from non-thermoplastic filaments or fibres
IPC: D06M11/82
Filed: 1946-07-10
Abstract: The safe ironing temperature of fabrics composed of filaments or fibres having a basis of a non-thermoplastic organic material is raised by impregnating the fabric with boric acid and then subjecting it to a hot calendering, hot mangling or decatising treatment.  The fabric is impregnated with an aqueous solution of boric acid at room or higher temperature, dried and then subjected to one of the specified heat treatments at a temperature of 90 DEG  to 150 DEG  C. The process is applicable to fabrics of cotton, wool, regenerated cellulose made by the viscose process or regenerated cellulose obtained by the complete saponification of cellulose acetate or other cellulose ester.
Patent GB-1531510-A (GB)
Title: Door or window closure
IPC: E05C9/02
Filed: 1976-05-19
Abstract: 1531510 Door fastening F C VAN HERPEN 19 May 1976 [21 May 1975] 20777/76 Heading E2A  A door fastening comprises a U-shaped housing 8, the base 9 of which supports a guide for a rotatable pinion 14 coupled to a handle 2, and a closing plate 28 secured to the U-shaped housing and accommodating a sliding piece 33, which carries fastening members 3 and 4, and a rack 37 which through an elongate hole in the closing plate engages with the pinion. Rotation of the pinion 14 by handle 2 results in a movement in a longitudinal direction of the rack 37 and a corresponding movement of the fastening members 3 and 4 which cooperate with for example suitable openings 38, 39 (Fig. 4) in a section 40 secured to the door frame 41.
Patent GB-359427-A (GB)
Title: Improvements in and relating to metallic compositions
IPC: C22C29/02
Filed: 1930-07-09
Abstract: A metallic composition particularly suitable for wire-drawing dies consists of a carbide of a metal such as tungsten, up to 25 per cent of an iron-group metal such as cobalt, and a few per cent of a grain growth inhibitor such as thoria.  A reduced mixture of tungstic oxide and thorium nitrate, or of tungsten and thorium nitrate, or of tungstie oxide and thoria may be carbonized as described in Specification 213,524, [Class 82 (i), Metals, Extracting &c.], whereby a mixture of tungsten carbide and thoria is formed.  This is milled with cobalt and the product is pressed and sintered.
Patent GB-358890-A (GB)
Title: Apparatus for physical exercise, more especially for hospital patients
IPC: A63B23/04
Filed: 1930-07-09
Abstract: 358,890. Bed rests; exercising- apparatus. GRUMLER, B. E., 38, Lancaster Gate, London. July 9, 1930, No. 20816. [Class 52 (ii).] A device for exercising b e d - ridden patients comprises a rectangular frame adjustably and detachably secured to a bedstead against which the patient's feet may be pressed and exercised. The exercising frame d may be adjustably connected by rods e .. h of varying length to a frame a rigidly attached to the foot of the bed and carries footboards k, l attached by spring clips m and detachable cross-bars o. The cross-bars may be rotatably mounted in sleeves or ball bearings or alternatively rollers s may be mounted thereon on which the feet may be exercised. In a modification, Fig. 2, the lower corners of the frame a may be adjustably clamped to the bedstead and the upper cross-bar connected to the foot of the bed by a single strut a<1> adjustably connected thereto and held at the lower end by a crutch b<1> and spring c<1>. Fig. 4 shows means for attaching a frame to the bed frame which comprise a plate t clamped between nuts v, v and carrying at its lower end a chain w adjustable by a screw z, the outer end of which carries a pin x engaging stops y. The bars o may be held in place by a spring h<1>, Fig. 6, upper end of which enters a hole i and the lower S-shaped part engages an upright d. A pedalling device may be attached to the footboard.
Patent GB-1312866-A (GB)
Title: Holloware construction
IPC: B65D6/04
Filed: 1971-04-19
Abstract: 1312866 Trays S J WINSLOW 19 April 1971 [20 July 1970] 20837/71 Heading A4A [Also in Division B3] An article of hollow-ware such as a tray has an ornamental mount 18 secured to a peripheral flange 16. The bottom surface 22 of the mount is substantially flush with the bottom surface of the flange 16 except for a bead 24 which is integral with the mount and overlaps the outer edge of the flange, thereby securing the mount to the flange. The bead is continuous and extends around the entire periphery of the flange 16. The mount 18 is formed by casting onto the flange.
Patent GB-1312588-A (GB)
Title: Apparatus for moving objects
Inventor: CROOK W
IPC: B65G15/26
Filed: 1971-04-19
Abstract: 1312588 Bed making DIAMONDHEAD CORP 19 April 1971 [5 Feb 1970] 20866/71 Heading A4J [Also in Division B8] An endless belt 32 is movable from a retracted position, Figs. 4 and 13 to a position, Figs. 5 and 14, in which its upper surface extends under a patient lying in a bed 44. The belt in this operation is not driven, but is held from movement by its drive rollers 104, 106. It is extended by the action of projecting a pair of upper and lower flexible support members 40, 40. The upper member 40 lies between upper and lower runs of the belt 32. The lower member 40 lies between upper and lower runs of a second endless belt 34 (shown more clearly in Fig.5a). The upper run of the belt 34 lies adjacent the lower run of the belt 32. A third run of the belt 32 extends around the trailing end of the belt 34 and extends underneath the lower run of the latter. The two supports 40, 40, are connected by members 42 to driving chains 60 on respective sides of the belts. These are shown in Fig. 7, the belts 32 and 34 being omitted from this figure for the purpose of clarity. A drive motor (70), Fig. 8 (not shown), for the chains 60 is also connectable to the drive of the drive roller 104 of the belt 32 by selective control of a clutch (88). When members 40, 40 are retracted, so as to transfer the patient from the bed 44, the clutch (88) is engaged so as to drive the belt 32 in a direction which maintains it in a fixed position relative to the moving supports 40. The patient is thus brought into postion above a support 16. The latter may be raised, Fig. 1 (not shown), by the action of a motor and worm gearing, Fig.3 (not shown). The apparatus may be used for changing sheets on a bed without disturbing a patient. The new sheet x is positioned between the belts 32 and 34 Fig.13, except for its leading edge which is folded over backwards above the leanding end of the belt 32. The supports 40, 40, are extended with the drive 104, 106, locked. This causes the sheet x to be projected from between the belts to the position shown in Fig.14. The far edge of the old sheet y is then tucked in between the belts 32, and 34, and the supports 40, 40, are then retracted, and withdraw the sheet 7, Fig.15 Each member 40, 40 comprises a number of flexible fingers (50), Fig.6 (not shown) each carrying a pulley 56 at the leading edge of the member.
Patent GB-761006-A (GB)
Title: Anamorphotic ancillary lens system
IPC: G02B13/08
Filed: 1954-07-19
Abstract: 761,006. Anamorphotic systems. ZEISSSTIFTUNG, C., [trading as ZEISS, C. [Firm of], July 19, 1954 [Aug. 24, 1953], No. 20992/54. Class 97(1) An afocal anamorphotic system for use before a camera or projector objective comprises a positive cylindrical member adjacent the objective airspaced from a negative cylindrical member which itself consists of two negative partial partial cylindrical members one of which consists of two lenses cemented together and the other of a simpli lens airspaced therefrom, the cylindrical axes of all the members being parallel. The two partial members may each have the form of a plano-concave lens. The two members may be relatively displaced to focus an object at a fixed disdistance. Numerical data are given for one example of the system shown in Fig. 2 in horizontal section and comprising a positive cylindrical doublet L<SP>I</SP>, L<SP>II</SP> placed before an objective D and followed by a negative cylindrical doublet V<SP>III</SP>, L<SP>IV</SP> and a simpli negative cylindrical lens L<SP>V</SP>.
Patent GB-380889-A (GB)
Title: Method of obtaining correct registration of negative and colour screen in photographic multi-colour printing
IPC: G03C7/04
Filed: 1931-07-23
Abstract: 380,889. Colour photography. PILLER, F., 7, Sendlingertorplatz, Munich, Germany. July 23, 1931, No. 21066. [Class 98 (ii).] To obtain correct registration of negatives and colour screens in photographic printing, a registering element in the form of a mask is applied to the colour screen through which the negative is taken, or to the object photographed. As shown, a line f of opaque, easily-removable paint is applied to one side of the multi-colour line screen r through which the negative n is taken, the line being wide enough to cover one colour aggregate. After exposure, the line f is removed, the picture area is protected by a mask or shutter, and the plate is exposed through the screen to coloured light, e.g. yellow, to obtain a line adapted to register with the blue elements on the printing paper. Fig. 2 shows a modification in which a coloured object f<1> is arranged in an inconspicuous manner in the picture. In a further modification the taking screen is provided, at one side, with lines of a definite colour, halation being avoided by a backing strip. Reference has been directed by the Comptroller to Specifications 12645/96, [Class 98, Photography], and 18900/12, [Class 98 (ii), Photographic processes &c.].
Patent GB-1492895-A (GB)
Title: Servo systems
IPC: G05D3/00
Filed: 1975-05-17
Abstract: 1492895 Automatic control INTERNATIONAL COMPUTERS Ltd 26 April 1976 [17 May 1975] 21096/75 Heading G3N The speed of a motor 1 is controlled so that it follows a given curve profile by adjustment of the speed towards the profile in steps of a predetermined magnitude. In the embodiment pulses from a transducer (not shown) attached to the armature of a line printer paper feed motor 1 are fed to a comparator circuit 3 and the speed of the motor compared from pulse to pulse with a programmed speed held in ROM 12. Deviation from the programmed profile is signalled on line 4 or line 5 depending on the sense of the error and used to step a binary counter 6. The output of the counter 6 adjusts a reference voltage on line 19 and this reference is used to control the current supplied to the motor 1 in the circuit 8. The speed of the motor is thereby adjusted towards its profile value.
Patent GB-1163997-A (GB)
Title: Improvements in or relating to Passivation of Semiconductors
Inventor: TIBBETTS DEREK ROSS
IPC: H01L23/29
Filed: 1967-05-06
Abstract: 1,163,997. Semi-conductor devices. ULTRA ELECTRONICS Ltd. 24 June, 1968 [6 May, 1967], No. 21181/67. Heading H1K. [Also in Division C7] A surface of a semi-conductor, e.g. Si is passivated by sputtering a film of anodizable material, e.g. Ta on to the surface, making electrical connection via a contact e.g. Au or A1 with the anodizable material, immersing the surface to be passivated in an anodizing bath and applying a voltage until all the material is converted to oxide. Preferably the whole surface is coated and unwanted oxide etched away to provide a planar transistor. Other elements may be incorporated in the oxide film from the electrolyte or by simultaneous deposition with Ta before anodizing.
Patent GB-707601-A (GB)
Title: Process for producing non-crystallizing copper phthalocyanine
IPC: C09B67/00
Filed: 1951-09-10
Abstract: Copper phthalocyanine is produced in a non-crystallizing, non-flocculating form by adding it to a melt of aluminium chloride, with or without sodium chloride, heating the mixture to 140-180 DEG C in absence of further halogenating agents, and recovering the copper phthalocyanine.  The product may be pasted with sulphuric acid in the usual way.  An example is given.
Patent GB-824708-A (GB)
Title: Improvements relating to compressed fluid braking apparatus
IPC: B60T15/30
Filed: 1957-07-05
Abstract: 824,708. Fluid pressure brakes. WESTINGHOUSE AIR BRAKE CO. July 5, 1957 [July 19, 1956], No. 21352/57. Class 103 (1). In a distributer valve for compressed fluid railway braking apparatus of the type in which provision is made for an emergency braking application and for a graduated release, there is provided a motor which is responsive to a rate of reduction of the brake pipe pressure, in excess of a predetermined rate, to open a vent valve and cause the emergency application, and to a rate of restoration of the brake pipe pressure in excess of a predetermined rate to open a direct release valve, thereby causing substantial equalisation of the central reservoir pressure and the brake pipe pressure to produce a direct release of the brake. The motor for providing the above characteristics is comprised in part 6 of the distributer valve assembly shown in the drawings, and includes a movable member mounted on diaphragm 158. In the event of an " emergency " operation of the driver's valve, the brake pipe pressure in chamber 159 above the diaphragm is caused to preponderate over that in quick action chamber 160 acting below, so that the slide valve 169 is moved to unseat the valve 185, whereby fluid from the control reservoir 3 flows to brake pipe 4 by way of pipe 27, passage 26, chambers 202 and 197, check valve 194, passage 192, chamber 188, unseated valve 185, chamber 184, passage 163, chamber 159, and passage 12, thus causing a substantial equalization between the pressures in the brake pipe and control reservoir. Emergency application of the brake takes place in the following manner. As a result of a relatively rapid emergency rate of reduction in brake pressure, reproduced in chamber 159, the slide valve 169 rises, lifting valve 150 from its seat, putting the brake pipe passage 12 into communication with the atmosphere through passage 154. At the same time passage 144 is put into communication with vent port 149, so that the piston valve 135 is raised against spring 143 to establish communication between chambers 138 and 139. Thus fluid from the auxiliary reservoir 2, in addition to flowing to the cylinder 1 by way of the service valve device in part 5 of the assembly and choke 104, may also flow to the brake cylinder 1 by way of pipe 16, passage 15, port 207, header chamber 206, passage 205, chambers 138 and 139, passage 140, choke 141, passage 99 and pipe 100, producing a more rapid rate of build up of brake cylinder pressure. Specification 817,845 is referred to.
Patent GB-1246201-A (GB)
Title: Improvements in outer covers for the rollers of machines for the treatment of materials in web form with humidified air or steam
Inventor: WHITTAKER JACK DEARDEN
IPC: D06B1/00
Filed: 1969-04-26
Abstract: 1,246,201. Textile treating apparatus. GREENBANK ENG. CO. Ltd. and EASTON & JOHNSON Ltd. 21 April, 1970 [26 April, 1969], No. 21413/69. Addition to 1,130,166. Heading D1L. In a machine for the continuous treatment of material in web form with humidified air or steam a cover for the machine is made of panels (formed of an outer layer of metal or an inner layer of heat insulating material) supported on a frame D made of rectangular frame elements D' formed of individual tubes d, the tubes of one element being in communication with those of ah adjacent element such that heated fluid may be passed through the tubes and so heat the insulated inner surfaces of the panels, this heating preventing condensation on the cover. In the embodiment shown the heated fluid is introduced via pipe d' to a frame element D' and then passes to adjacent elements via pipes d<SP>2</SP>, eventually leaving the frame D by pipes d<SP>3</SP>.
Patent GB-407716-A (GB)
Title: Improvements in coke ovens
IPC: C10B5/02
Filed: 1932-09-20
Abstract: 407,716. Coke ovens. PAVITT, W. H., 90, Chatfield Road, Bronxville, New York, U.S.A. Sept. 20, 1932, No. 21617/33. Convention date, Oct. 26, 1931. Divided on 399,975. Drawings to Specification. [Classes 51 (i) and 51 (ii).] In a coke-oven battery the regenerator air supply connections are taken to the cellar space beneath the structure, which is closed in airtight so that a pressure above atmospheric can be maintained therein. The oven arrangements described are the same as those of Specification 399,975.
Patent GB-614671-A (GB)
Title: Improvements in or relating to the formation of oxide coatings on aluminium surfaces
IPC: C23C22/66
Filed: 1946-07-19
Abstract: Oxide coatings are formed on the surface of aluminium and aluminium alloys by treating them with an aqueous solution containing 0.5-6.0 per cent by weight of alkali metal carbonate and 0.2-5.0 of polyvinyl alcohol.  When the solution contains only 0.2-3.0 of polyvinyl alcohol it may also contain 0.05-0.5 per cent of alkali metal chromate.  Preferably the carbonate content is at least equal to the polyvinyl alcohol content.  The oxide coating may be treated with hot sulphonated castor oil followed by a 15-minute treatment in 5 per cent sodium chromate solution.