baber/WOPTO huggingface dataset:
Patent GB-487541-A (GB)
Title: Improvements in or relating to searchlight or picture-projection installations
IPC: G03B21/20
Filed: 1937-05-18
Abstract: 487,541. Optical-projection apparatus; searchlights. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFAB. RIEKEN. May 18, 1937, No. 13881. Convention date, May 20, 1936. [Class 97 (i)] [Also in Group XI] A light-transmitting body, having a diffusing surface in contact with a substance having an optical density greater than that of air and less than that of the light-transmitting body, is arranged in the beam of a picture projector, or of a searchlight, comprising a condenser lens and a high-pressure metal-vapour discharge tube, to render the beam homogeneous. The diffusing surface may be on the condenser lens or on a glass disc between the discharge tube and the condenser. As shown a discharge tube 1, associated with reflectors 2 producing images 3, 4 thereof, is used in conjunction with a chromatically uncorrected condenser 5 to illuminate the gate 6 of a projector. The arrangement is such that the middle portion 8 of the gate is illuminated by two overlapping beams, and its edges 7 by one beam only. Dark stripes are normally formed at the junctions of the portions 7, 8, and at least the side of the condenser towards the tube 1 is frosted or otherwise made light-diffusing, or a diffusing disc 10 is inserted, to prevent their formation. One or both sides of the condenser, or the disc 10, is in contact with liquid which may be the cooling water or other liquid for the discharge tube. The single discharge tube and its images may be replaced by a plurality of discharge tubes.
Patent GB-1037797-A (GB)
Title: Shaft seal
IPC: F16J15/34
Filed: 1964-04-03
Abstract: 1,037,797. Mechanical seals. BORGWARNER CORPORATION. April 3, 1964 [April 18, 1963], No. 13930/64. Heading F2B. In a mechanical seal comprising a non- rotatable seal ring 32 having a face 40 urged into sealing contact with a face 22 of a radial flange 20 on a rotary pump drive shaft 14, cooling fluid is supplied to the contact faces through recesses 28 on the periphery of the flange 20. The face 40 is on a carbon insert ring 36 and the ring 32 is connected to the pump housing 10 by a resilient diaphragm 33 and urged towards the flange 20 by a spring 35. The recesses 28 are connected by passages 30 in the flange 20 with a cavity 26 and, in operation, fluid is pumped by centrifugal force from the cavity 26 to the recesses 28 and then impinges on the face 40 to act as a coolant. In a modification, Fig. 3 (not shown), fluid is supplied to the contact faces through slots 54 in the flange 52, the bottom surface 56 of each slot being at an acute angle to the shaft axis.
Patent GB-236181-A (GB)
IPC: H01F38/12
Filed: 1925-05-28
Abstract: 236,181. Bosch Akt.-Ges., R. June 26, 1924, [Convention date]. Transformers. - In order to obtain an air gap of sufficiently low reluctance without the necessity for accurate machining and assembly in the core of ignition coils for internal - combustion engines, the coil a of the coil b is formed with laterally-extending end pieces c which increase the cross-sectional area of the gap e, between the member a and an iron ring d which completes the magnetic circuit, to such an extent that the permissible length of the gap is increased.
Patent GB-743641-A (GB)
Title: Improvements in and relating to methods for lubricating textile fibres and materials
IPC: C10M169/00
Filed: 1950-06-05
Abstract: An easily-scourable textile lubricant comprises 20-80 per cent by weight of hydrocarbon oil (flash point above 250 DEG F. and viscosity at least 90 secs.  Redwood I at 70 DEG F.) or of the unsaponifiable oily material (flash point above 250 DEG F.) occurring in wool grease stearines or oleines, 10-60 per cent by weight of one or more oleine acids (i.e. soap-forming acids which are saturated or unsaturated fatty acids or acids derived from woolgrease) and 2-50 per cent by weight of one or more of the following:-(a) a monoester of a polyalkylene glycol, (b) one or more wool wax ethers, (c) a monoether of a glycol or of a polyglycol and (d) an amide derived from a fatty acid or a wool wax acid.  The proportion of ingredients (a) - (d) must be at least 7.5 per cent by weight of the hydrocarbon oil or unsaponifiable oily material.  Monoester (a) is derived from a polyalkylene glycol having a molecular weight above 106 but not above 1000 and contains not more than 2 free hydroxyl groups in its molecule.  It also contains in its molecule a hydroxyl group which has been esterified with a fatty acid, a wool wax acid, a naphthenic acid, an alkyl benzoic acid or an alkyl hydrobenzoic acid.  Monoether (c) is a glycol or polyglycol etherified with a saturated or unsaturated aliphatic monohydric alcohol, which monohydric alcohol has at least 10 carbon atoms in its molecule and at least 8 carbon atoms in a straight chain.  Optional ingredients of the lubricant include long chain aliphatic monohydric alcohols, other partial esters of aliphatic di- or polyhydric alcohols, fatty esters such as fats, fatty oils and waxes, solvents, emulsifiers and antioxidants. The lubricant may be applied to the textile fibres in conjunction with an inorganic sol.  Thus it may be emulsified with an inorganic sol such as silicon sol, and the emulsion applied to the fibres. Examples of textile lubricant compositions are given.  Specifications 634,588 and 665,475 are referred to.
Patent GB-543776-A (GB)
Title: Improvements in or relating to stacks for cooling towers
IPC: F28F25/08
Filed: 1940-09-09
Abstract: 543,776. Cooling-towers. KIER & CO., Ltd., J. L., HOLLIDAY, J. F., WESTERGAARD, O. L. B., and BRANCZIK, K. W. Sept. 9, 1940, No. 14008. [Class 64 (i)]. A filling for a cooling tower is built up of wood or moulded strips having parallel upper and lower surfaces, alternate horizontal layers of spaced strips D<1> being placed across intermediate spaced strips B<3> to form vertical or inclined air passages. The strips may be so arranged that the passages are zig-zagged. Each strip has one or both of its sides inclined.
Patent GB-317130-A (GB)
Title: Improvements in and connected with secondary electric batteries
IPC: H01M10/30
Filed: 1928-05-12
Abstract: 317,130. Herold, V. May 12, 1928. Drawings to Specification. Right to Patent relinquished. Electrodes.-A storage battery having an alkaline electrolyte is provided with a positive electrode consisting of alternate layers of nickel and oxide or hydrate and nickel flakes, and a negative electrode of cadmium hydrate or crushed cadmium with which a small quantity of iron or iron oxide may be mixed. The electrolyte may consist of a solution of caustic potash. The active material for the positive electrode may be contained in perforated nickel tubes supported in a nickel steel frame. Similar but smaller tubes may be used for the negative electrode, or the latter may comprise a nickel steel frame formed with rectangular cells for the reception of perforated flat nickel steel pockets containing the active material.
Patent GB-451802-A (GB)
Title: Improvements in, or relating to, drawing-tables
IPC: A47B27/14
Filed: 1935-05-14
Abstract: 451,802. Tables or desks. MAVITTA, W., Anchor Works, Park Road, Aston, Birming- ham. May 14, 1935, No. 14087. [Class 52 (iii)] In a draughtsman's table, the drawing-board is trunnioned in a frame which is vertically adjustable and is counterweighted. As shown, the drawing-board a is attached to two brackets a<1> each mounted by means of a sleeve on a spindle a<3> which connects the two vertical side members b. Each sleeve a<2> has a boss c<1> in which is adjustably secured a rod c<2> carrying a weight c. A toothed quadrant e, which forms part of a spacer between the bracket a<1> and the vertical member b, serves to control the slope of the board a, being set by means of a spring- loaded detent d withdrawable by a hand lever d3. The height of the table a is adjusted by causing the parts b to telescope with respect to frames f. They are supported by a counterweight b<1>, and move between rollers f<1> ; they are set by a spring-loaded detent g operated by a treadle g<3>, and engaging a rack b<4>.
Patent GB-854737-A (GB)
Title: Improvements in or relating to apparatus for forming a continuous tobacco filler
IPC: A24C5/18
Filed: 1957-02-26
Abstract: The subject-matter of this Specification is identical with that described in Specification 854,736, but the claims are concerned with the holding of the filler to the perforated belt by air pressure between the position at which build-up of filler on the belt is completed and the position where the filler is trimmed. Specification 854,738 also is referred to.
Patent GB-789998-A (GB)
Title: Improvements in the preservation of threads and products therefrom
IPC: D06M13/35
Filed: 1955-05-17
Abstract: 789,998. Proofing threads and cords. BADISCHE ANILIN & SODA FABRIK AKT.- GES. May 17, 1955 [May 26, 1954], No. 14174/55. Class 140. A process for the preservation of threads and products therefrom consists in impregnating them with aqueous dispersions of polymers derived from acrylic or methacryiic acid esters, vinyl esters, vinyl chloride, vinyl carbazole, vinyl lactam, styrenes, acrylonitrile and vinylidene chloride and which dispersions contain as dispersing and bactericidal agent a quaternary ammonium compound which derives from tertiary amines of a N-heterocyclic compound which is a ring of at least five ring members including nitrogen and an alkyl radical with at least eight carbon atoms. Specified polymerization products are copolymers of ethyl or butyl acrylate, vinyl propionate or vinylidene chloride with vinyl chloride, acrylonitrile, vinyl carbazole, vinyl lactam, styrenes or methacrylic acid esters. Specified quaternary ammonium compounds are the reaction products from N- octodecylhexamethylene imine and dimethyl sulphate or benzyl chloride, those derived from N-octodecylpyrrolidine or bearing octyl, decyl, dodecyl or other alkyl radicals on the nitrogen atom, and quaternization products of octodecylpiperidine and chlormethylnaphthalene. The goods to be impregnated are treated in a single bath and may be kept floating by means of floats of cork or porous plastic. The bath may be heated moderately. The impregnated goods are dried at normal temperature. In an example, an aqueous dispersion is prepared from a copolymer of ethyl acrylate and acrylonitrile and quaternary salts from octodecylhexamethylene imine and dimethyl sulphate. Fishing nets of cotton fibre, jute, linen and hemp, cordage, ropes and fishing lines are impregnated in a bath of the dispersion and then dried in the air.
Patent GB-571221-A (GB)
Title: An improvement in or relating to linear-dimension gauges
IPC: B25H7/04
Filed: 1943-09-01
Abstract: 571,221. Linear - dimension gauges. MATTHEWS, H. Sept. 1, 1943, No. 14243. [Class 106 (ii)] A linear-dimension gauge comprises a gauge block or an assembly of gauge blocks (not shown) to one end of which is secured a base or fixed gauging member and to the other end of which is clamped a member a in which is slidably mounted the other gauging member c. The member c carries a screw d extending through a nut e by which the member c may be adjusted finely as indicated by a scale f and vernier g. A knurled screw h holds the member c in adjusted position.
Patent GB-1283432-A (GB)
Title: Improvements in or relating to the coating of glass
IPC: C03B18/14
Filed: 1970-03-24
Abstract: 1283432 Coating float glass PILKINGTON BROS Ltd 24 March 1970 14255/70 Heading C1M [Also in Division C7] Float glass is coated with a metal by vaporizing the metal, entraining it in a carrier gas, e.g. nitrogen or argon, and directing the gas on to the glass. The gas is fed across the molten metal and directed through slots 32 in graphite ducts 31. Excess vapours are extracted through ducts 46. The glass is cooled after each deposition by members 18, 19, 20. A first keying layer of metal e.g. W, Ag, Cr, Pd, Ni or a Pd-Ni alloy may be followed by a coating of Al, Cu, Ag, Sn or Au, and a final protective layer of Mg or Cu fluoride or tin oxide may be applied.
Patent GB-480765-A (GB)
Title: Reversible hearth for any apparatus
IPC: F23H9/02
Filed: 1936-05-20
Abstract: 480,765. Grates for furnaces. CAPITAINE, P. May 20, 1936, No. 14282. Void. Convention date, May 27, 1935. [Class 51 (i)] [Also in Group XI] A cylindrical fuelholder, adapted to be inverted after re-fuel. ling in order to brinp the fresh charge below the burning fuel, consists in the form shown of a drum mounted on horizontal trunnions and formed by upper and lower grate sections a hinged at c to imperforate sides b. The holder may be inverted by a handle on one of the trunnions, or, in the case of large holders, through reduction gearing. A locking-device may be provided to retain the holder in its two positions of use.
Patent GB-319034-A (GB)
Title: Improvements in or relating to fuses and the like, and processes for the manufacture thereof
IPC: H01H85/046
Filed: 1928-05-15
Abstract: 319,034. Parkin, T. D., and Pratley, H. W. May 15, 1928. Addition to 295,444, [Class 37, Electricity, Measuring &c.]. Fusible cut-outs.-A fuse for small currents consists of a moulded block IB of insulating material on one surface of which a film M of tin, silver, or other metal is printed or pressed, part of which is then scraped away to leave a neck N of the dimensions required. The metal may be applied by coating . the top plate of the mould in which the block IB is formed, with Mansbridge paper, or with a sludge of the metal. The whole may be heated during the pressing on of the film. Hook tabs HT are bolted to the block IB for connecting the fuse in circuit.
Patent GB-1536487-A (GB)
Title: Device for displacing an egg-tray
IPC: B65B23/06
Filed: 1976-04-08
Abstract: 1536487 Gripper for lifting loaded egg trays APPARATENBOUW MOBA BV 8 April 1976 [11 April 1975] 14308/76 Heading B8H Apparatus for transferring loaded egg trays comprises a gripper assembly 3 pivotally mounted on two pairs of pivotable arms, 1, 2. The gripper assembly comprises a first frame 7 supporting a series of suction cups 12 for gripping the eggs and a second frame 8 with a series of inflatable fingers 15 for gripping the edge of the egg tray. In an alternative embodiment Fig. 6 (not shown) the vacuum operated actuators (22) move fingers (29) to engage the edge of the tray.
Patent GB-620031-A (GB)
Title: Precious metal alloys for dental purposes and manner of making them
IPC: A61K6/04
Filed: 1945-06-06
Abstract: A process for the utilisation of waste dental sheet metal alloy or waste "white gold" sheet dental alloys respectively having a high melting point and consisting of Pd, Au and Ag, comprises dissolving them in a molten alloy in the proportion of two to one part of the waste to one part of the alloy, the molten alloy for dissolving the two waste alloys being composed of <FORM:0620031/II/1> and <FORM:0620031/II/2> parts by weight, respectively.  The Zn may be replaced by the same amount of Cd or Sn or Bi.
Patent GB-328457-A (GB)
Title: Improvements in elements for building constructional toys or models
IPC: A63H33/12
Filed: 1929-05-08
Abstract: 328,457. Hommade, Ltd., and Wolson, S. N. May 8, 1929. Mechanical constructions, details for building- up.-The elements for constructional toys comprise flat metal strips 1 with a plurality of slots 2 along their sides, adapted to be aligned and fastened by nuts 5 and bolts, in combination with adjuncts, as, screwed rods 4, eye bolts, perforated discs 6, smaller discs 7, crank pins 9, and pulley discs. Fig. 5 shows a construction in which two perforated discs 6 mounted one on each side of a smaller disc 7 on a screwed rod 4, form with the pin 9 having its collar 10 between the discs 6 a crank pin. The ends of the metal strips which may be L or T shaped have circular holes for better fixing and may be bent at right angles to the strip to form distance pieces as at 11, Fig. 5.
Patent GB-1509244-A (GB)
Title: High voltage current converters
IPC: H02M1/096
Filed: 1975-04-08
Abstract: 1509244 Selective signalling SIEMENS AG 8 April 1975 [8 April 1974] 14440/75 Heading. G4H [Also in Division H2] In a high voltage converter comprising a thyristor V1, a wireless receiver El comprises a detector D1 the output of which is supplied along two channels each including a filter H11, H12 passing the respective modulation frequency, the difference in outputs of the channels being combined in such a way that one channel provides a signal, for turning on the thyristor V1, whilst the other channel inhibits such signal. The invention is applicable to a HVDC transmission system comprising seriesparallel connected thyristors V1. The quartz oscillator G11, G12 respectively provide frequencies of 5À5 and 6À6 MHz, the required frequency being selected by signals on line S1 independent on whether the appropriate thyristor is to be triggered or not, and are fed to a frequency shift keying modulator M1 and M which acts on the output of a 51 MHz quartz oscillator G. The frequency is increased by a multiplier E to 2448 MHz and, after amplification to 2W is transmitted at A to a receiving antenna B1, feeding a ratio detector D1 and two channels each comprising a filter H11, a limiting amplifier X11 at an amplitude demodulator P11 the outputs of which are distinguished by means of differential amplifier DV1 feeding a Schmitt trigger K1 which turns on thyristor V1 in response to a modulation frequency f11. Other series chains of thyristors are controlled by six other pairs of modulation frequencies combined at U. Fig. 3 (not shown) relates to the modulator M1 which comprises a pair of AND circuits, a negator and a OR circuit. Monitoring anode voltage of thyristors.-The anode voltage of thyristor V1 is monitored at U1 so that if the anode voltage is zero (in the event of a fault) oscillator 01 is blocked. In the absence of a fault, oscillator 01 changes the impedance of a capacitive or PIN diode I1 which modulates the signal received by B1, re-radiation from which is picked up by the transmitting antenna A and fed via a circulator Z to a receiver R feeding an evaluating circuit W which gives information as to the code number, place and/or number of faulty thyristors V1.
Patent GB-309438-A (GB)
Title: Improvements in or relating to cartridge feeding devices for ammunition in automaticfirearms
IPC: F41A9/05
Filed: 1928-05-16
Abstract: 309,438. Werkzeugmaschinenfabrik Oerlikon. April 10, 1928, [Convention date]. Machine guns ; cartridge belts. - Cartridges are arranged end to end in the links of a chain, which is guided alongside and parallel to the breech casing of the gun. Each link of the chain comprises three parallel rods 2a, Fig. 4, secured at their ends to discs 2<b> provided with studs 2<c>; and the adjacent studs of the links are connected together by loops 3, which enable the links to be folded compactly, with the cartridges side by side. This chain of cartridges is fed through a tube 1 formed with a flared mouth 1<b>, Fig. 3, and provided with a lining 4 formed with a longitudinal groove 4b having a flared entrance 4<a>. The flared mouth 1<b> guides the chain into the tube; and the flared entrance 4a guides one of the rods 2a into the groove 4<b>, which holds the chain in its correct position as it passes through the tube 1. The chain is moved step by step forwards, and at each step a cartridge is passed from the chain to the breech of the gun, these operations being performed by the reciprocation of the breech-block. When a shot is fired, and the breech-block recoils, a rail 15, Fig. 5, recoils with it; and at the end of the recoil, cams on the rail 15 rock levers 13, which throw a cartridge out of the chain and into the breech of the gun through lateral openings in the tube 1 and the breech casing. On the return stroke of the breechblock, a pawl 6, Fig. 4, carried thereby engages behind a disc 2<b> and feeds the chain forwards one step. At the end of the stroke, a pawl 8<a> on the tube 1 is wedged out by the cartridge P in the chain, and the other end of the pawl is thereby inserted in front of the disc 2<b> and stops the forward movement of the chain. At the same time, another pawl 10 on the tube 1 moves behind the next disc 2<b> and prevents any retrograde movement of the chain. A single chain may be fed along the breech; or two separate chain feeds may be provided, the feeding pawl 6 of one being thrown out of action when the feeding pawl of the other is put in action. This enables the use of two different kinds of ammunition in quick succession. In a modification of the chain, one disc 2b contains a spring catch, which disconnects one link from the next as the links become empty.
Patent GB-844345-A (GB)
Title: Improvements in or relating to continuously heated carbon black furnaces
IPC: B01J23/70
Filed: 1958-05-06
Abstract: <PICT:0844345/III/1> Thermal black is produced by the continuous passage of vaporous or gaseous hydrocarbon through a cracking chamber maintained at a temperature greater than 1500 DEG F., preferably 2000-3000 DEG F., by means of one or more adjacent combustion chambers in each of which one or more burners each radiate heat into the cracking chamber through a respective orifice, the pressure in the cracking chamber being greater than that in any adjacent combustion chamber.  As shown hydrocarbon to be cracked is passed through a preheater 10 into a cracking chamber 8 supplied with heat radiated from burners 6 in a combustion chamber through orifices 4a, and the resulting carbon black and hydrogen are sprayed with water in a cooler 12. Fuel passes to the burners via line 5, and the products of combustion pass preheater 10 and damper 9.  In a modification (Fig. 4, not shown), hydrocarbon to be cracked passes into the cracking chamber axially through each burner.  In a further modification (Fig. 3, not shown), a combustion chamber is situated at each side of the cracking chamber, and a refractory column is situated in the cracking chamber.  The hydrocarbon to be cracked may be passed at a pressure of 30 p.s.i. into a cracking chamber heated to 2400 DEG F. by the combustion of a natural gas-air mixture and increasing the pressure in the combustion chamber to 28-29 p.s.i. by damping the flow of combustion products.
Patent GB-889108-A (GB)
Title: Process for the chlorination of polyethylenes having a density of more than 0.93
IPC: C08F8/20
Filed: 1958-05-07
Abstract: Polyethylene of density more than 0,93 is chlorinated by subjecting to gaseous chlorine at above 50 DEG C. in the presence of water and an inert solvent for the polyethylene.  The polyethylene is preferably prepared by the low pressure polymerization process, e.g. using as catalysts a combination of organo-metal compounds with reducible heavy metal compounds, and preferably has a molecular weight of 20,000 to 2,000,000.  The chlorination may be conducted at 100 DEG  to 150 DEG C. and at superatmospheric pressures, e.g. 1,5 to 7 atmospheres, and under the action of radiation, e.g. ultra-violet light.  The solvent may be carbon tetrachloride, chloroform, methylene chloride or chlorobenzene.  The water may contain an electrolyte, p  e.g. calcium chloride, sodium chloride or sodium sulphate, an azo or peroxide catalyst and an emulsifier, e.g. alkylaryl sulphonates or alkyl sulphonates.  The course of the chlorination may be followed by titration of the hydrochloric acid produced in the water.  The chlorinated polyethylene produced may be incorporated into polyvinyl chloride.