baber/WOPTO huggingface dataset:
Patent GB-926490-A (GB)
Title: Improvements in shell type boilers
Inventor: TATEM JOHN ARTHUR
IPC: F22B7/14
Filed: 1961-02-17
Abstract: 926,490. Feeding steam boiler furnaces. G.W.B. FURNACES Ltd. Feb. 13, 1962 [Feb. 17, 1961; Aug. 30, 1961], Nos. 6028/61 and 31245/61. Class 51 (1). [Also in Group XIII] In a shell type boiler solid fuel is fed to the furnace through a tube passing down through the steam and/or water spaces of the shell. In the form shown the boiler consists of an enveloping shell 1, a steam drum 2, furnace 6, combustion tube 15 and front and rear plenum spaces 5, 16, respectively. A solid fuel delivery tube 12 passes vertically down through the steam drum 2 and includes solid fuel delivery apparatus as described in Specification 816,745. Primary air is supplied through an air box 13 and the secondary air is that used to spread the fuel butwardly from the mouth of the delivery tube whilst tertiary air is fed through conduits 14 beneath the rear end of the grate. The combustion gas flows in through the combustion tube 15 to the rear plenum space 16 which is lined with water tubes 17 connected to the boiler shell by headers. The rear plenum chamber is baffled to pass the combustion gases forwards through a set of fire tubes to a front plenum chamber 5, whence they pass into another set of fire tubes to the rear plenum chamber and thence to a flue outlet 23. The arrangement enables a change-over from solid fuel to oil or gas firing to be made easily, a clean out door 9 being removed and the appropriate burner fitted in its place.
Patent GB-771244-A (GB)
Title: Improvements relating to dust collection plant
Inventor: HEINRICH DIETER OTTO
IPC: B04C7/00
Filed: 1954-03-02
Abstract: 771,244. Centrifugal separators. SIMONCARVES, Ltd. Feb. 28, 1955 [March 2, 1954], No. 6056/54. Class 23 [Also in Group XL(a)] A multi-cell straight flow cyclone separator 2 at the inlet of an electrostatic precipitation 6 discharges dust laden gas to a multi-cell reverse flow cyclone separator 7. The gas drawn through the separator 7 by fan 10 is passed through duct 11 to the inlet of the precipitator, or to the inlet of the separator 2. Some of the cells of the separator 2 may be sealed from the separator 7. The dust hoppers 12, 13 are integral with the main structure.
Patent GB-922490-A (GB)
Title: Improvements relating to apparatus for providing stabilised d.c. voltages
Inventor: BANGA GYUOA
IPC: G05F3/18
Filed: 1960-02-22
Abstract: 922,490. Rectifying; automatic regulation. ELECTROFLO METERS CO. Ltd. Feb. 3, 1961 [Feb. 22, 1960], No. 6162/60. Classes 38 (2) and 38 (4). A circuit for providing a stabilized D.C. output from an A.C. supply comprises a low-leakage step-down transformer whose primary winding is in series with a resistor R, the secondary winding feeding a bridge rectifier Mr whose output is smoothed by a capacitor C and partially stabilized by a silicon reference diode Z1, a further stage of stabilization being effected by a bridge circuit of resistors R2, R3, R4, R5, wherein silicon reference diodes Z2, Z3 are included in opposite arms. To compensate the variation of zener breakdown voltage with ambient temperature changes a copper-manganin resistance combination P1, R6, R7, R8 is included, the resistance P1 being variable for presetting. An adjustable resistor P2 is included in series with the load terminals 3, 4. A neon tube may be disposed across the transformer primary winding.
Patent GB-1099525-A (GB)
Title: Process and apparatus for the development of photocopying material
IPC: G03D13/00
Filed: 1965-02-12
Abstract: 1,099,525. Developing apparatus. KALLE A.G. Feb. 12, 1965 [Feb. 15, 1964], No.6232/65. Heading G2A. Apparatus for the heat development of exposed photo-copying material comprises a closed gasfilled chamber 1, the gas being heated by thermostatically controlled elements 9 and circulated in a closed circuit by a fan 10. The chamber 1 is disposed between two portions 5, 6 of a housing, the portion 6 being bounded by a wall 4 having orifices 11 therein through which the gas enters the chamber and suction ports 12 through which the gas leaves the chamber. The material is fed into the chamber 1 by rollers 2, and passes out between rollers 3. In another embodiment Figs. 3, 4 (not shown) the developing chamber is formed between two eccentrically arranged shells. In a further embodiment Figs.5, 6 (not shown) the chamber is formed between a shell and a rotatable perforated cylinder through which the gas is sucked by the fan. Air, nitrogen or carbon dioxide may be used. Up to 25% by volume of ammonia may be mixed with the air to facilitate development.
Patent GB-1010212-A (GB)
Title: Improvements in and relating to solid electrolytic wound capacitors
IPC: H01G9/15
Filed: 1963-02-15
Abstract: 1,010,212. Capacitors. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb. 15, 1963 [Feb. 20, 1962], No. 6249/63. Heading H1M. A solid electrolytic capacitor comprises an aluminium foil anode formed in a glycolammonia boric acid solution with a dielectric oxide layer, a glass fibre tape, and an etched cathode foil of copper, copper alloy, or stainless steel wound into a coil. The coil is postformed in citric acid solution, heated to remove the acid, and repeatedly impregnated in a solution of manganese nitrate in its water of crystallization which is then pyrolysed under reduced pressure at temperature increasing from 235‹ C. to 400‹ C. to produce a deposit of manganese dioxide on the glass fibre strip. The coil is then postformed twice in citric acid solution and heated to remove the acid.
Patent GB-540053-A (GB)
Title: Improvements in lighting fittings having multiple light sources
IPC: F21V7/04
Filed: 1940-04-08
Abstract: 540,053. Lamps forming a line of light. CAMPBELL, G., and BENJAMIN ELECTRIC Ltd. April 8, 1940, No. 6268. [Class 75 (iv)] In lighting-fittings having a number of linear light-sources in a common housing or reflector, loss of light, due to the shielding of one lamp by another, is reduced by arranging the lamps on or above the planes representing the angles at which the light is cut off by the edges of the reflector. The angle of cut off, above which no lamp is directly visible, may be one of 20 degrees below the horizontal, and is represented by the lines 3. In a fitting having three lamps, the two outer lamps 2 each lie on one of the lines, and the third is at their intersection, and, consequently, at a lower level. The roof of the reflector may be V-shaped in cross-section or of other form adapted to reflect light downwards between the lamps.
Patent GB-371100-A (GB)
Title: An improvement in or relating to boilers for heating water or generating steam
IPC: F24H1/40
Filed: 1931-02-28
Abstract: 371,100. Water-tube boilers. MARSDEN, W., Oak Dene, Great Cliff, Crigglestone, near Wakefield, Yorkshire. Feb. 28, 1931, No. 6273. [Class 123 (ii).] In a boiler having upper and lower ring shaped headers a, b with detachable covers a<1>, b<1> and connected by vertical tubes c enclosing the combustion chamber, the tubes are secured by expanding their ends over the inner ends of the openings a2 in the headers, and cross tubes f are secured to the vertical tubes by expanding their ends over the inner ends of openings in the vertical tubes. Handhole covers g opposite the ends of the cross tubes are held together by a vertical strip g<1> in each vertical tube c. The spaces between the vertical tubes may be closed by plates d secured by bolts d<2>. Tubes m shut off from the heat of the furnace by corner pieces d<3> serve as downcomers. The tubes are surrounded by nonconducting covering 0.
Patent GB-765903-A (GB)
Title: Partial epoxidation of naturally occurring oils
IPC: C07D303/42
Filed: 1955-03-04
Abstract: Halogen-containing resins and specifically vinyl-type resins are plasticized with partially epoxidized triglycerides obtained by heating naturally occurring unsaturated oils under epoxidizing conditions with only sufficient epoxidizing agent to epoxidize the mono-unsaturated fatty acid radicals and one double bond only of each poly-unsaturated fatty acid radical in the oil (see Group IV (b)).ALSO:Unsaturated fatty acid esters contained in naturally occurring oils are partially epoxidized by heating said oils under epoxidizing conditions with an epoxidizing reagent, the amount of which corresponds to 1 to 1.3 mol. of epoxidizing reagent for each double bond in each mol. of mono-unsaturated ester plus 1 to 1.3 mol. of epoxidizing reagent for one double bond only of each mol. of poly-unsaturated ester.  The epoxidizing agent may be an aliphatic peracid containing from 1 to 10 carbon atoms, e.g. peracetic, performic or perbutyric acid, or may be hydrogen peroxide and an aliphatic carboxylic acid containing from 1 to 10 carbon atoms in the presence of 0.5 to 5 per cent by weight of sulphuric acid, and the reaction may be carried out with or without a solvent such as hexane or benzene.  When a peracid is used, the reaction temperature may vary from 15 DEG  to 35 DEG  C. with reaction times of 1 to 4 hours, and a buffer such as sodium acetate is added to neutralize any mineral acid.  The amount of epoxidizing reagent varies with the composition of the oil, the amount of double bonds to be reacted in order to obtain the required partially epoxidized ester being, for example, linseed oil 43.3 per cent, corn oil 68 per cent, menhaden oil 33.2 per cent, safflower oil 55 per cent, and soyabean oil 57.7 per cent. On completion of the reaction, the product is washed with water, filtered through anhydrous sodium carbonate if necessary, dried with magnesium sulphate and filtered.  Detailed examples are given for the partial epoxidation of safflower oil, corn oil, linseed oil, menhaden oil, and soya bean oil, using as epoxidizing agent peracetic acid, or hydrogen peroxide and glacial acetic acid with sulphuric acid, or perbutyric acid or hydrogen peroxide and formic acid, with or without benzene as a solvent.  The products may be used as plasticizers in halogen-containing resins and specifically vinyl-type resins.
Patent GB-1386714-A (GB)
Title: Liquid crystal display device
IPC: G02F1/13357
Filed: 1973-02-09
Abstract: 1386714 Matrix displays SUWA SEIKOSHA KK 9 Feb 1973 [16 Feb 1972] 6512/73 Heading G5C [Also in Division G3] In a display device comprising liquid crystal material 16 between an analyser 17 and a polarizer 18 a phosphor layer 20 is added to improve contrast. The planes of polarization of the analyser and polarizer are perpendicular and the liquid crystal rotates the plane of polarization through 90 degrees when a field is not applied. Hence on energizing electrodes 21 . . 24 a dark pattern on a light background is produced when viewed from the analyser side. The planes may be parallel and a light pattern formed on a dark background. The electrodes 23, 24 on the polarizer may be reflective and an apertured insulating film placed over them. The device is used in a wrist-watch with COS-MOS driving circuitry.
Patent GB-582976-A (GB)
Title: Improvements in or relating to explosive salts and applications thereof
IPC: C07C205/23
Filed: 1941-05-21
Abstract: Basic lead salts of 4 : 6-dinitroresorcinol are prepared by reacting a water-soluble normal salt of 4 : 6-dinitroresorcinol in aqueous solution with a water-soluble lead salt in the presence of a soluble base, characterised by the feature that an aqueous solution of the water-soluble lead salt is added gradually and with agitation to an aqueous solution of the water-soluble normal salt of 4 : 6-dinitroresorcinol in the presence of the soluble base, or alternatively the soluble base may be added with the lead salt.  The proportions in which the reagents are added are calculated with reference to the basicity of the acid which is combined with the lead.  It is preferred that an elevated temperature such as 35-55 DEG C. should be maintained, and that the agitation should be continued after the reaction is complete.  The salts may be made into a paste with a solution of a film-forming ingredient dissolved in a suitable solvent, for instance a nitrocellulose solution in a volatile organic solvent and applied to the bridge wire and/or polepiece extremities of the fuze-head, and evaporated to form the priming composition into a coherent head.  Examples are given showing the preparation of mono-, di-and tri-basic lead salts of 4 : 6-dinitroresorcinol by the process of the invention.  Specification 192,830, [Class 2 (iii)], is referred to.
Patent GB-872999-A (GB)
Title: Improvements in and relating to plants for handling material in granular or powder form
IPC: B65D88/68
Filed: 1958-02-28
Abstract: 872,999. Screw conveyers. PARKER MITCHELL ENGINEERING CO. Ltd., and PARKER, W. J. Feb. 18, 1959 [Feb. 28, 1958], No. 6562/58. Class 78 (1). A conveyer for forcing downwards material of an abrasive nature consists of a number of segments 11 fast on a driven shaft 10, each segment being provided with a radial abutment 14 on its leading edge, a similar but oppositely projecting abutment 13 on its trailing edge and an arcuate abutment 15 projecting downwards from its periphery. A protective layer of material is deposited on the underface of each segment between the abutments 13, 15.
Patent GB-859253-A (GB)
Title: Improvements in clips for paper, files or the like
Inventor: HUDSON LESLIE GORDON
IPC: B42F1/00
Filed: 1957-02-27
Abstract: 859,253. Spring clips. HUDSON PATENTS Ltd. Feb. 19, 1958 [Feb. 27, 1957], No. 6637/57. Class 44. A clip for holding e.g. a file of papers is formed of metal and comprises a pair of projecting arms c urged into contact by a spring a, the clip has at least one hook e pressed out thereof and at least one hole h, so that a number of such clips may be suspended one from the other in vertical series.
Patent GB-1075992-A (GB)
Title: Punch assembly
IPC: B21D45/00
Filed: 1965-02-16
Abstract: 1,075,992. Punches. G. G. F. SMEETS. Feb. 16, 1965 [April 14, 1964], No. 6641/65. Heading B3W. A punch, punch guide and stripper assembly comprises a punch holder 1 which has an enlarged tubular portion 4, of which part of the wall is removed and an internal groove 5 which receives the flanged head 7 of a punch 6. A stripper spring 2 is held, partially compressed between the part 4 and a clip 3. A single-piece punch-guide and stripper comprises a tubular member with an open end which fits over the part 4 and contacts the stripper spring, a guide bore which fits the body diameter of the punch and a closed end which acts as the stripper plate and has an aperture through which the punch proper 6a projects. In a modification. Fig. 3, the same punch is used but the punch guide and stripper are separate. The stripper comprises a tubular part 14 connected to the stripper plate 12 by bars 13. The punch guide comprises an upper part which fits over the portion 4 and a reduced lower tubular part 15 which has internal splines 16 to receive the bars 13, the punch guide surface is formed by the internal diameter of the splines. In a further modification, Fig. 4 (not shown), the punch is formed with at least one flat on the body diameter 6 and the stripper is made in two parts. One part comprises the plate 12 and the bars 13 and the other part comprises the tubular part 14, which in this embodiment has a floor in which there is a non- circular opening to receive the part of the punch on which the flat is formed. Part of the wall is removed so that the punch may be inserted laterally, and in a predetermined orientation. The tubular part 14 also has external lugs which project through slots in the head of the punch guide and engage a keyway in the machine press.
Patent GB-139808-A (GB)
Title: Improvements in air cooling arrangements for an electric generator set driven by an internal combustion engine
IPC: F02B63/04
Filed: 1920-03-04
Abstract: 139,808. Bosch Akt.-Ges., R. Aug. 9, 1915, [Convention date]. Void [Published under Sect. 91 of the Act]. Dynamos, cooling.-A centrifugal blower is arranged between the internal-combustion engine and dynamo of a combined set so that the air drawn in by the blower cools one machine and the air expelled cools the other machine. The rotor d of the blower is keyed on the common shaft c of the set and acts also as a fly-wheel. The casing g has a central suction opening h arranged near the dynamo b, and the space within the casing is divided by two or more arc-shaped partitions i1, i2 into two crescent-shaped exit passages from which air is lead by pipes k1, k2 towards the heads of neighbouring cylinders a. Each exit passage has an extension in the form of a pocket m1, m2 from which air is conducted through openings n1, n2 and semi-conical exits o1, o2 towards the crank casing and magneto, respectively. The rotor d may have either straight or curved blades p. Some of the air drawn in by the blower passes through the space s, but a large part is drawn through the air-gap of the dynamo entering at the inlets v1, v2.
Patent GB-918337-A (GB)
Title: Improved means for cutting webs of paper or the like
IPC: B26D1/60
Filed: 1960-02-25
Abstract: 918,337. Cutting apparatus. TIMSON, E. A. Feb. 17, 1961 [Feb. 25, 1960], No. 6670/60. Class 31 (1). Web severing mechanism for cutting a travelling web W of paper or the like along a transverse line disposed at a desired angle relatively to the longitudinal edges thereof comprises a frame 1 adapted to extend transversely across the path of travel of the web and a cutting blade 9 fixed upon a carrier 10 which is traversable longitudinally along the frame by means of a double-acting piston-and-cylinder unit 11 mounted on the frame, the frame being pivotable about an extension 3a of a spindle 3 and the angular disposition of the frame being adjustable by means of a manually-operable screw 21 engaged with a barrel nut 22 carried by the frame. The carrier 10 is supported by an endless chain 8, or belt, passing around sprockets 7, or pulleys, located on spindles 2, 3. The piston 15 of the unit 11 is connected by an element 16 to chains 13, 14 passing around sprocket-wheels 12 on the spindles 2, 3 so that the chain 8 is driven from the unit 11 by means of a step-up transmission. The blade 9 cooperates with a groove 18 between two abutment members 17 or. in a single abutment member. Reference has been directed by the Comptroller to Specification 839,441.
Patent GB-935211-A (GB)
Title: Improvements in or relating to a free-piston power driven compressor device
IPC: F02B71/04
Filed: 1960-02-25
Abstract: 935,211. Free-piston compressors. E. P. BURION. Feb. 25, 1960 [March 6, 1959], No. 6728/60. Class 7(2). A free-piston compressor device includes a casing defining at least one engine cylinder 4 or 5 containing two opposed engine pistons 6, 6a or 7, 7a respectively connected to opposed compressor pistons 8, 9 working in compressor cylinders, a space provided behind at least one of the compressor pistons and communicating with the associated compressor cylinder, an inlet valve 14 for admitting air to the space during a working stroke, an auxiliary chamber 17 directly connected with a scavenging manifold for the engine cylinder and a discharge valve 16 for connecting the space with the auxiliary chamber during a return stroke, one of the compressor pistons being arranged also to operate as a buffer piston for returning the engine pistons after a working stroke. The compressor cylinder 2 is advantageously constructed as a buffer or cushioning cylinder this cylinder containing a charge of air which is compressed during each driving stroke of the free-piston assemblies. The cylinder 3 is arranged to compress air which is supplied to a receiving device or container. In a modification the pistons 8 and 9 can work as compressor pistons a chamber at the rear of one of the compressor pistons being used to ensure the return stroke of the free piston assemblies. Fig. 4 shows the injection of the fuel into a common precombustion chamber 25 for the two cylinders. A cell 30 is provided in each cylinder. Modified arrangements of the pre-combustion chamber and cells are described. The fuel injection may be located in a channel communicating with the two cylinders and comprise two outlets so that injection of fuel takes place in two jets respectively directed towards the two cylinders 4, 5. An inlet chamber 13 is provided with the inlet valves 14 which connect the interior of the inlet chamber with the atmosphere through an air filter 15 and with the discharge valves 16 connecting the chamber 13 with the space 17 associated with the intake ports. The exhaust gases may be used for driving for example an auxiliary turbine (not shown).
Patent GB-439166-A (GB)
Title: Improvements relating to electric regulating systems
IPC: G05F1/00
Filed: 1934-03-02
Abstract: 439,166. Converting ; automatio regulation. BRITISH THOMSON -HOUSTON CO., Ltd., Crown House, Aldwych, London, and KINMAN, T. H., Ladbroke House, Bilton Road, Rugby. March 2, 1934, No. 6737. [Classes 38 (ii)] In an arrangement for maintaining constant, under varying load circuit conditions, the output of a high frequency oscillation generator V2 feeding a load such as an induction furnace winding L4, the oscillation generator is supplied by a grid-controlled rectifier V1, and a voltage derived by rectifying a part of the output of the oscillation generator is caused to control the conductivity of a triode V4 which in turn controls the phase of the potential applied to the grid of the rectifier V1. The grid of the triode V4 is normally negatively biassed by the drop across a discharge tube N3 connected in series with other discharge tubes N1, N2 from which the anode circuit is energized, the three discharge tubes being supplied from an auxiliary rectifier V3. When the triode V4 is non-conductive, the full anode voltage thereof is effective to energize through a discharge tube NL a saturating winding Ls associated with the inductance T3 of a phase shifting bridge in the grid circuit of the rectifier V1. Under these conditions the rectifier operates at the upper limit of output voltage. A part of the output of the oscillation generator V2 is supplied through a condenser C3 to an auxiliary rectifier V5 associated with a resistance P, and the drop across the latter which is proportional to the output is used to effect regulation by neutralizing the fixed bias on the grid of the triode V4. When the latter is thus rendered conductive, the voltage applied to the tube NL is reduced by reason of increased drop in the anode resistance P1 ; the discharge at the tube NL ceases, and the resulting increase in the value of the inductance T3 reduces the output voltage of the rectifier to a lower limit. The level at which the output of the oscillation generator is maintained may be varied by manual adjustment of the condenser C3 or of the resistance P.
Patent GB-582882-A (GB)
Title: Improvements in warning apparatus for oxygen supply apparatus in aircraft
IPC: A62B7/14
Filed: 1945-03-16
Abstract: 582,882. Barometric gauges. LONDON, R. C., and ANDERSON, E. F. March 16, 1945, No. 6740. [Class 106 (ii)] A warning apparatus for use in connection with the oxygen supply in aircraft comprises a Bourdon tube 3 which is connected to an oxygen supply system and an aneroid capsule 10 sensitive to air pressure. When the oxygen pressure falls below a predetermined value a spring contact 7 moves into engagement with an adjustable spring contact 8 thereby partially completing the electric circuit controlling the warning device. A pin 11 on the aneroid capsule abuts the spring contact 12 which engages the adjustable contact 13 when the atmospheric pressure falls thus partially completing the electric circuit. If the air pressure falls beneath a predetermined level and the oxygen supply is insufficient the warning device operates. Contact 20 permits the circuit to be tested when the plane is on the ground.