baber/WOPTO huggingface dataset:
Patent GB-386708-A (GB)
Title: Improvements in or relating to means for evacuating closed vessels
IPC: H01J13/28
Filed: 1931-08-31
Abstract: 386,708. Vacuum pumps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and GALLIZIA, E., of General Electric Co., Witton, Birmingham. Aug. 31, 1931, No. 24455. [Class 71.] A barometric valve in which a pipe 4 extends into mercury &c. is interposed in the suction conduit by which a mercury arc rectifier is evacuated, e.g. between a vapour pump such as a diffusion pump and a rotary oil backing pump 3, to seal the container against inlet of air in case the pump pressure should rise, and the liquid level in the valve is automatically lowered when the valve is not required, by means responsive, e.g. to the pressure or the power supply. Fig. 1 shows a float 7 of magnetic material depressed by springs 8 and raised by a solenoid the circuit of which is broken by a switch 10 actuated by a relay circuit closed by the mercury in a pressure gauge 14. A switch may short-circuit the contacts 10 at starting. Fig. 2 shows an auxiliary mercury container 15 the rotation of which supplies mercury to or withdraws mercury from the valve container 1. A window 17 in conjunction with pointers 18 allows the level to be observed; this window may be constituted by the auxiliary container. Both means of regulating the level may be used in conjunction.
Patent GB-518200-A (GB)
Title: Improvements in potentiometer circuits for controlling bias voltages for pushpull photocell circuits, thermionic valves and similar purposes
IPC: H03F3/28
Filed: 1938-08-19
Abstract: 518,200. Photo-cell circuit arrangement; valve amplifying circuits. R.C.A. PHOTOPHONE, Ltd., and UNDERHILL, J. L. Aug. 19, 1938, No. 24463. [Classes 40 (iii) and 40 (v)] [Also in Group XXXV] A variable potentiometer having a fixed centre-tapping is provided with a sliding contact connected to the centre tapping for short circuiting such part of the potentiometer resistance as is included between said tapping and said contact. A potential dividing circuit comprising fixed resistances d, e, f, g and a regulable resistance arrangement h arranged as shown are connected to a supply at the points, a, o, the arrangement being used to supply voltages to two photo cells of a push-pull photo cell circuit or to supply screen or grid voltages to two vacuum tubes. The devices supplied may be connected respec tively between the terminals b, o and c, o Reduction of the voltage applied to one of the devices i effected by move ment of the slider along the resistance h towards that device the voltage applied to the other device being maintained at a constant value. Alternatively, the devices may be connected respectively between the terminals a, b and a, c. Feeder a may be connected to the +ve supply line and o to the -ve supply line or vice versa.
Patent GB-492707-A (GB)
Title: Improvements in or relating to gyro-verticals
IPC: G01C19/44
Filed: 1937-09-08
Abstract: 492,707. Gyroscopic apparatus. SPERRY GYROSCOPE CO., Inc. Sept. 8, 1937, No. 24491. Convention date, Sept. 12, 1936. [Class 97 (iii)] In a gyro-vertical in which erecting torques are exerted upon relative inclination between the gyro and a universally mounted pendulum, the latitude error is compensated by adjusting the relation between the gyro, the pendulum, and the torque causing means. As shown the gyro casing 9 has a depending tube 8 carrying a button 17 from which the exhaust air issues as a series of tangential jets 16. A baffle 18, carried by the pendulum 5 and prevented from frictionally engaging the button 17 by an air bearing fed by the central jet 19, differentially obstructs the jets 16 except when it is in alignment with the button 17. To correct for latitude error the baffle 18 may be laterally adjusted by screw 21 in a cradle 20 which is kept in the E-W plane by the repeater motor 25. The gyro casing 9 is universally mounted in neutral equilibrium by gimbal 10 in a ring 58 to which the pendulum 5 is fixed. The ring 58 is in turn universally mounted by gimbal 56 in a ring 3 which is caused to follow-up the gyro about both horizontal axes by motors controlled by an inductive-type controller 50. In a modification in which the button 17 is replaced by an inverted cone and the jets are carried by the pendulum, the latitude error is corrected by making the westerly air jet stronger than the others or by tilting the member carrying the jets relatively to the pendulum in the E-W plane. British Specification 220,726, [Class 97 (iii)], and U.S.A. Specifications 1,518,892 and 2,093,503 are referred to.
Patent GB-244939-A (GB)
Abstract: 244,939. Frey, S. Jan. 28, 1925. Spoons, cleaning and polishing.-A machine for grinding, polishing, or cleaning spoons and like articles on both sides simultaneously, comprises an upper rotary tool 18 of truncated conical form coacting with a second rotary tool 9, the axis of the two tools being at right angles. The upper tool is driven from an electro-motor 2 through a belt 11 and may be fed downwards by rack and pinion gearing operated from a handle 16. The lower tool is driven from the motor shaft through bevel gearing 4. The grinding tools may be made of felt which is swelled in oil and impregnated with powdered pumice stone, and the upper tool is continuously supplied with oil by means of pipes 20 and oil cups 19, excess oil dropping on to the lower tool. In a modification the handle 16 may be operated from a pedal. In a further modification the motor may be arranged to drive the lower tool spindle directly while the belt for driving the upper tool passes over guide pulleys. Two sets of tools, one for roughing ond one for finishing, may be arranged one behind the other, the second' lower tool 26 being driven as shown in Fig. 4. In another modification, for polishing flat articles such as cake shovels, the tools 9<a>, 18<a>, are arranged as shown in Fig. 3, the lower tool being driven through bevel gearing 21.
Patent GB-1394739-A (GB)
Title: Compressor or turbine rotor
IPC: F01D5/06
Filed: 1972-05-25
Abstract: 1394739 Turbine and compressor bladed rotors ROLLS-ROYCE (1971) Ltd 17 May 1973 [25 May 1972] 24568/72 Heading FIT A turbine or compressor rotor comprises a filament wound drum having at least one row of apertures therein adapted to receive the root portions of a row of rotor blades. By the term "filament wound" is meant formed from a length or plurality of lengths of a fibrous material which is wound to form the desired shape and simultaneously or subsequently embedded in a matrix material. The rotor shown is a compressor rotor of a gas turbine engine and comprises a cylindrical web portion 29 with four flanges 30 between which are formed apertures 31 for reception of blade root portions 40. The web 29 is connected integrally by means of a frusto-conical portion 32 with a further web 33 similarly formed with flanges 34 and apertures 35, and the web 33 is in turn connected integrally by a frusto-conical portion 36  with a further web 37 similarly formed with flanges 38 and apertures 39. The blades are also formed of fibre material and the roots 40 are in the form of loops which are inserted through the apertures 31  and are retained by pins 41 passed through the loops below the web 29, a spreader member 42 having an arcuate outer surface and a recess to receive the pin being provided. Filler pieces 44 are provided between adjacent blades of a blade row, the filler pieces engaging against projections 45 formed at both sides of the blades. In a second embodiment the rotor drum is formed with inwardly-directed flanges 55, 56, 57 the blade roots 58, 59 being again in the form of loops which extend through apertures between the flanges and are retained by pins 61, 62, annular rings 63 being incorporated in the rotor drum during the winding phase of manufacture. The rotor may be formed of carbon fibres embedded in an epoxy resin matrix.
Patent GB-354069-A (GB)
Title: Improvements relating to adjustable brackets for shelving
IPC: A47B57/34
Filed: 1930-08-16
Abstract: 354,069. Brackets. BENNET, G., 18, Claremont Gardens, Milngavie, Dumbartonshire. Aug. 16, 1930, No. 24586. [Class 52 (v).] In adjustable shelving brackets of the kind in which the bracket 4 is provided with arms 5 engaging channels 3 along the sides of an upright 2 provided on its front face with a rack 1 with which the rearward edge of the bracket engages, the rack consists of a strip of metal bent to form corrugations, and is secured to a grooved upright.
Patent GB-686620-A (GB)
Title: Improvements relating to lamps for vehicles
IPC: B60Q1/26
Filed: 1950-10-09
Abstract: 686,620. Road - traffic signals on vehicles. NALLINGER, F. Oct. 9. 1950 [Oct. 8, 19491. No. 24653/50. Class 118. (ii) [Also in Group XI] A vehicle rear lamp unit comprises three lamps disposed coaxially or substantially coaxially with one another, the innermost lamp A serving as a rear light, the intermediate lamp B as a stop light and the outermost lamp C as a direction-indicating or flashing light.
Patent GB-1501064-A (GB)
Title: Method of salvaging and restoring physical properties to used over-temperatured metal articles
IPC: C22F3/00
Filed: 1976-06-15
Abstract: 1501064 Reconditioning turbine blades &c. CABOT CORP 15 June 1976 [16 June 1975] 24703/76 Heading B3V The physical properties of used, overtemperatured turbine blades &c. are restored by hot isostatically pressing the blades &c. at temperatures and pressures sufficient to eliminate creep-induced micro defects. The blades may be passed in an argon or helium atmosphere at 1800-2300 F. and pressures of 5000- 50,000 p.s.i. Heat treatment may follow.
Patent GB-1184090-A (GB)
Title: Improvements in or relating to Cards for Data Processing Apparatus
IPC: G06K13/07
Filed: 1967-06-08
Abstract: 1,184,090. Record cards and readers. DATA DYNAMICS Ltd., and T. E. DARLOW. 24 May, 1968 [8 June, 1967], No. 24726/67. Heading G4M. A card 11, e.g. of plastics material, has a recess 12 in which a strip of punched paper tape may be secured by pins 28 engaging tape feed holes, by adhesive, or by a transparent cover or by a combination of these measures. Sprocket holes 21, 27, arranged asymmetrically with respect to the card edges and stopping short of the rear edge 19 to prevent incorrect insertion, are provided for engagement with stepping- motor driven feed sprocket wheels. The holes in rows 21, 27 may be relatively staggered, and the first hole may be flared out as shown. The strip of tape is sensed by a column of photocells, including one for the tape feed holes. Microswitches provide signals indicative of the presence of a card at the reading station and in the fully inserted position.
Patent GB-710403-A (GB)
Title: Electronic switching devices
IPC: H03K29/00
Filed: 1952-10-03
Abstract: 710,403. Multi-stable state circuits. STANDARD TELEPHONES & CABLES, Ltd. Oct. 3, 1952, No. 24846/52. Class 40 (6) A multi-cathode gas discharge tube comprises bias control circuits coupled each to a cathode each control circuit being coupled via a rectifier to a further control circuit so that the firing of a given anode/cathode gap causes the other control circuits to bias their anode/cathode gaps to different potentials so that a pulse applied across all of the gaps causes a selected one to fire. The Figure shows a switching circuit comprising a cold-cathode gas tube 1 having an anode 3, cathodes 4-8 and a plate electrode 9 which is positively biased to limit the active cathode areas. Each cathode has associated with it a bias control circuit comprising resistors 19, 24-23, 28 and capacitors 29-33 and is coupled by rectifiers 14-18 to other control circuits. If initially anode/cathode gap 3-6 is conducting then the positive voltage of cathode 6 is transferred in part via the rectifiers to the associated cathode networks on a progressively decreasing basis so that if the cathode resistors are of equal value the voltage across gaps 3-8 and 3-7 will be the greatest. If now a positive input pulse is applied to the control circuits at capacitor 35 or a negative pulse is applied to the anode at capacitor 36 the discharge in gap 3-6 is extinguished and due to the priming effect of the adjacent discharge in gap 3-6 only gap 3-7 fires. The next pulse causes gap 3-8 only to fire and subsequent pulses cause the process to continue round the tube in an endless sequence. In a modification, Fig. 2 (not shown) the capacitor of each bias control circuit is shunted by a resistor so that the gap potentials are all different. In a further modification, Fig. 3 (not shown) the bias control circuits comprise only resistors and the rectifiers interconnect given cathodes so that the gaps fire in a predetermined pattern. In a further modification, Fig. 4 (not shown) the cathode'bias control circuits are interconnected in staggered relationship by means of a rectifier and resistor connected in series.
Patent GB-1017441-A (GB)
Title: Lubricants
Filed: 1962-06-28
Abstract: A mixture of CaAg and an N-acyl substituted sarcosine <FORM:1017441/C4-C5/1> R being C8- 24 alkyl, forms a stable dispersion in oil, the viscosity of which can be varied from fluid oil to grease according to the proportions of the acetate and sarcosine.  An oil soluble carbonated, sulphurized basic calcium alkyl phenate can also be present.  Greases can also be formed by the addition of gilling agents, e.g. soaps (of alkali and alkaline earth metals, of Al, Pb, Zn) clay, silica, pigments, polyureas, and terephthalamates.  The greases can also contain Ca salts of C1- 6 fatty acids.  The base oil can be mineral or synthetic, e.g. polyolefines, silicones, fluorocarbons, esters of mono- or poly-basic acids and of P-containing acids, perfluoroalkyl ethers, esters of poly alcohols and monocarboxylic acids, and silicate esters. The greases can also contain phenyl-a -naphthyl-amine, phenols, free fat and fatty acids, sulphurized fats, and molybdenum disulphide.
Patent GB-1444061-A (GB)
Title: Coating
IPC: H01B3/46
Filed: 1974-06-05
Abstract: 1444061 Insulating coatings WELWYN ELECTRIC Ltd 5 June 1974 [4 April 1974] 24873/74 Heading B2E [Also in Division C3] Electrical resistors are provided with a flameproof insulating protective coating by applying a suspension comprising (i) a mixture consisting of 2-20% wt of a polymerisable organosilane having at least one hydrolysable radical and 98-80% wt of a powdered inorganic siliceous material capable of coupling or otherwise reacting with the silane with the proviso that up to 30% wt of the siliceous material may be replaced by one or more substances selected from suspension agents, pigments and other compatible additives e.g. resins and fillers, and (ii) a liquid diluent, evaporating off the diluent and then curing the coating by heating e.g. to 100‹-200‹C. The preferred silane has the formula (Silane A). Suitable siliceous materials are crystalline silica, a silicate, quartz, steatite, porcelain, silicate glass, mica and/or asbestos. Suitable liquids are water, ethanol, methanol, acetone, methyl "Oxitol" (RTM) and/or isopropyl alcohol. Mixture (i) may comprise up to 20% wt of an organopolysiloxane resin. In example 1 a cylindrical resistor comprising a ceramic substrate fitted with metal terminal leads and having a nickel-chromium wire resistance element wound thereon is provided with a coating prepared from a suspension comprising silane A, powdered electrical porcelain, finely ground quartz, Cr 2 O 3  pigment and water. In example 2 a cylindrical resistor comprising a ceramic substrate having a tin oxide resistive film and metallic terminals is provided with a coating prepared from a suspension comprising silane A, quartz powder, asbestine suspending agent, red iron oxide pigment, a methylphenylpolysiloxane resin and isopropyl alcohol.
Patent GB-935254-A (GB)
Title: Improvements in or relating to optical projection lens systems
Inventor: HOUGHTON JAMES LEONARD
IPC: G02B13/00
Filed: 1960-07-18
Abstract: 935,254. Optical objectives. KODAK Ltd. July 13, 1961 [July 18, 1960], No. 24952/60. Class 97 (1). The objective is of the three component type as shown, the rear component III being interchangeable with others of different power so as to vary the magnification. Preferably, all the rear components have the same thickness and same front radius whereby the object to image distance is kept constant. Preferably also the rear components are such that the power of the objective is not changed by more than Œ ID. Optical data are given for one example having four different rear components.
Patent GB-393571-A (GB)
Title: Improvements in or relating to gramophone needles
IPC: G11B3/48
Filed: 1931-09-05
Abstract: 393,571. Gramophone needles. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Sept. 5, 1931, No. 25001. Convention date, Sept. 6, 1930. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. [Class 40 (ii).] Gramophone needles are made entirely or partly of " a moulding mass of synthetic material," such as an artificial resin, consisting of a phenol-formaldehyde condensation product, or a cellulose derivative such as " trolite." The resin may be mixed with a filling material in the form of chips or flakes, such as loose threads or small pieces of tissue. Lubricating- materials such as graphite or slate powder may also be used as fillers for the synthetic material. The composition may form a layer around a metal core, preferably of soft iron. Instead of moulding the needles directly, they may be machined from premoulded masses of the synthetic material.
Patent GB-894888-A (GB)
Title: Improvements in ball and socket joints
IPC: F16C11/06
Filed: 1960-07-19
Abstract: 894,888. Ball-and-socket joints. LANGEN, V, [trading as EHRENREICH & CIE, A.]. July 19, 1960, No. 25074/60. Class 65(2). A ball-and-socket joint comprises a stud 2 with a part spherical head 3, an annulus 5 with a spherical surface and a socket 1 within which the annulus can have angular movement, there being two pairs of bearing surfaces to take the axial load of the stud, the one pair taking it up to a predetermined amount and thereafter the second pair taking or assisting in taking the load. In one embodiment (Fig. 1) the load is first taken between the surface 4 and the resilient ring 7 and as the load increases surface 8 of the annulus comes into contact with the surface 4. In modifications the resilient ring 7 is replaced by a resilient or spring mounted ball bearing and/  or a ball bearing may be introduced at the position 8. In another modification the annulus is formed by a hard core within a resilient sheath having holes containing balls so that the sheath normally provides one bearing surface and when the load is increased the balls also form a bearing. In another embodiment (Fig. 6) the annulus is formed in two parts 20, 21 with a resilient ring 26 with holes containing balls 9 between them, the ring providing the first bearing surface and the balls the second bearing; the ring 26 may be conical instead of planar. In a modification (Fig. 5) the parts 20, 21 are resilient and contain a ball bearing 23 forming the first bearing and the two parts 20, 21 form the second bearing surface so the load is increased.
Patent GB-172109-A (GB)
Title: Improvements in wings for aircraft
IPC: B64C9/28
Filed: 1920-08-31
Abstract: 172,109. Page, F. H., and Page, Ltd., H. Aug. 31, 1920. Planes and the like, construction and arrangement of; steering, balancing, and regulating altitude.-A wing structure is composed throughout from front to rear of a number of wing sections separated by slots, similar to the wing sections described in connection with the leading portion of a wing in Specification 157,567. The wing structure has a convex upper contour, and all the wing sections 1 in advance of the trailing section are set at negative angles to the wing structure, with their noses at a less distance apart than the length of the chord of the adjacent wing section; the length of the slots being considerably greater than their width, and the entrances to the slots on the under side of the wing structure being larger than, and in advance of, their exits on the upper side. The wing sections 1 may be fixed in the wing structure. Or they may be pivoted at 5, Fig. 4, and connected at their trailing edges by two-armed levers 8 to a rod 9 which can be moved forwards or backwards by a nut-wheel 10 in the stationary wing- section 6 to close or open the slots. In a modification, Fig. 6, each section 1 is linked to levers 12 on a shaft 14, which can be turned to slide the sections 1 along the rails 11 towards the fixed section 1<x> to close the slots. In another form, the trailing portion of each wing section in front of the trailing section is pivoted to the fixed main portion, and adapted to be closed down upon the section behind it. In yet another form, each fixed wing section except the leading section carries a pivoted valve 15, Fig. 8, which can be closed down into a recess 15<1> in the section to leave the slots open, or turned up as shown to close the slots. The valves carry brackets, which are connected by links 19, so that the valves are moved together upon rotation of a shaft 16 linked to one of them. The shaft 16 is operated by a hand-lever 20, and may be connected to a similar shaft on the upper wing structure of a biplane by cranks and a rod 22. According to the Provisional Specification, the wing structure may consist of only two wing sections.
Patent GB-425453-A (GB)
Title: Improvements in and relating to endless track vehicles
IPC: B62D55/108
Filed: 1934-08-31
Abstract: 425,453. Endless - track vehicles. TENNANT, W. J., 111, Hatton Garden, London.-(Tatra Works Ltd. Motor Car & Railway Carriage & Wagon Builders; 200, Kartouzska, Smichov, Prague) Aug. 31, 1934, No. 25142. [Class 79 (i)] In a vehicle in which the frame for each track 2 is pivoted at the rear to the vehicle body 1 co-axially with the driving sprocket shaft 4 and at the front is resiliently connected to the body, each track frame comprises a tube 6, 6<1>, having brackets 7, 7<1> for the track rollers and brackets 8, 8<1> for the idler pulleys and the spring means connecting the track frame to the body. In the construction shown a singly transverse spring 9 connects both track frames to the body.
Patent GB-1212113-A (GB)
Title: Process for coating objects using powdered plastics material
Inventor: RESZ RAOUL
IPC: B05D1/10
Filed: 1968-05-27
Abstract: 1,212,113. Coated objects. FARBENFABRIKEN BAYER A.G. 27 May, 1968 [22 June, 1967], No. 25184/68. Heading B2E. Objects of metal, ceramics, glass, plastics or wood are coated by dip- or spray-coating or by an electrostatic coating process using a powdered plastics material with a particle diameter of from 20 to 300Á, wherein the powdered plastics material is a powdered, hydrolysed ethylene-vinyl acetate copolymer which before hydrolysis contains ethylene and vinyl acetate in a molar ratio of from 2:1 to 20:1 and which is hydrolysed to a level from 80 to 100%. The dip-coating may be a whirl sintering technique and the spray-coating may be a flame-spraying technique. The copolymers may have an average molecular weight of from 10,000 to 50,000. The substrate may be roughened prior to coating. The metal object may be of steel, copper, brass, bronze, aluminium or its alloys.
Patent GB-227188-A (GB)
Title: Improvements in the impregnation of fabrics, leather and similar materials
IPC: D06M13/02
Filed: 1923-10-10
Abstract: In the impregnation of candle wicks with waxes or tallow, the wax &c. is applied in the form of an aqueous colloidal suspension.  Reference has been directed by the Comptroller to Specifications 117,068, 169,758, 209,138, 209,811, and 210,495, [all in Class 140, Waterproof &c. fabrics].
Patent GB-738636-A (GB)
Title: Light-sensitive photographic elements and emulsions suitable for x-ray exposure
IPC: G03C1/09
Filed: 1953-06-03
Abstract: 3 - p - Dimethylaminophenyl rhodanine is prepared by refluxing a solution of carboxymethyl - trithiocarbonic acid, p - amino - dimethylaniline and sodium carbonate in water, cooling and collecting the solid formed.  Specification 583,508, [Group XX], is referred to.