baber/WOPTO huggingface dataset:
Patent GB-134422-A (GB)
Title: Improvements relating to Electric Furnaces.
Inventor: CAMPBELL DONALD FRASER
IPC: H05B3/64
Filed: 1918-12-23
Abstract: 134,422. Campbell, D. F. Dec. 23, 1918. Controllers, star-delta. - In electric furnaces supplied from a polyphase source, the voltage impressed on the load circuit is varied by changing the connexions of either the primary or secondary windings of a transformer from mesh to star or vice versa, a reactance being introduced into each phase at the higher voltage and cut out or reduced at the lower voltage. In the arrangement shown, the higher voltage is obtained by connecting the primary windings A<1>, A<2>, A<3> in mesh with the reactances D<1>, D<2>, D<3>, by moving a throw-over switch C on to contacts e<1>, e<2>, e<3>. When the switch is thrown over to the contacts f<1>, f<2>, f<3>, the windings ar.e placed in star and the reactances are cut out. The secondary windings G<1>, G<2>, G<3> may be connected in mesh or star. In a modification, the switch controls the secondary windings of the transformers, and connects these in star; in series with the reactances, for the higher voltage, and in mesh, with the reactances cut out, for the lower voltage.
Patent GB-1309021-A (GB)
Title: Thermal insulation and method for the manufacture thereof
IPC: C04B38/00
Filed: 1971-04-19
Abstract: 1309021 Inorganic thermal insulation UNITED STATES ATOMIC ENERGY COMMISSION 19 April 1971 [13 March 1970] 21678/71 Heading B5A An inorganic thermal insulation product is formed by mixing a particulate oxide of a size 100-150 Š with a thixotropic gelatinous organic material to wet the particles and reduce their volume, dispersing inorganic fibres in the mixture, drying it while volatilizing some of the organic material, pressing the mixture to shape with a pressure sufficient to make the organic material flow for binding and lubricating the particles and then sintering the particles to volatilize substantially all the organic material. The oxide is preferably silica and may be zirconia, alumina, thoria or titania. The organic material is preferably octanoic acid but may be heptanoic or nonanoic acid and may be used with other wetting agents, e.g. esters, ethers, ketones which are preferably volatilized during the drying. The fibres may be silica, zirconia, asbestos, alumina or titania.
Patent GB-239238-A (GB)
Title: Improvements in portable ovens
IPC: F24B1/00
Filed: 1925-08-31
Abstract: 239,238. Grandjean, A. Aug. 30, 1924, [Convention date]. Ovens; oven shelves. - A portable oven, applicable to a range or gas or oil stove, and comprising an inner cooking-chamber 1 surrounded by a casing 5 with intervening flue spaces, is provided with a revolving plate or sole 18, and with a doorway (not shown) extending between the inner and outer casings and of cross-sectional area less than that of the cooking-chamber. The form shown is circular in plan, and the rotatable shelf or grid 18 is carried by rollers 19 and a central support 21. A conical baffle and deflector for the gases 13 is provided beneath the bottom 3 of the cooking-chamber, and may be arranged at an adjustable distance from it. The bottom plate 3 may be perforated. The gases enter and leave by openings 9, 10.
Patent GB-804161-A (GB)
Title: Improvements in or relating to light-sensitive controlling devices
Inventor: KAY JAMES ARTHUR
IPC: B65B57/06
Filed: 1954-07-27
Abstract: 804,161. Photo-electric control arrangements. ROSE BROS. (GAINSBOROUGH) Ltd. July 5, 1955 [July 27, 1954], No. 21856/54. Class 40 (3). [Also in Group XVII] An arrangement for detecting the absence from its correct position of one of a spaced succession of articles being forwarded comprises a light source and photo-cell so arranged relative to the articles that light from the source can reach the cell to actuate control mechanism only when the normal spacing between successive articles is exceeded. The container filling machine shown in Fig. 1 comprises a chain 12 carrying at equally spaced locations containers 11 and engaging a wheel to which hoppers 16 are attached so that each container location comes adjacent a hopper at filling station 14. At this point wedge 19 engages roller 18 to empty the hopper provided a container is in the location. If the container is missing the wedge is retracted from its operative position as follows. A beam of light 23 is projected across the line of motion of the containers towards photocell 24 at such an angle that so long as each container position is occupied no light reaches the cell, but if a container is missing light reaches it to energize, via amplifier 26, solenoid 28 to retract wedge 19. In an alternative arrangement light from a source is directed across the path of the containers to a mirror and thence back to a photo-cell, the angle of projection being such as to satisfy the conditions previously referred to.
Patent GB-382665-A (GB)
Title: Improvements in drive mechanisms for mechanical stokers
IPC: F23K3/12
Filed: 1931-07-31
Abstract: 382,665. Mechanical stokers. AMERICAN ENGINEERING CO., Aramingo Avenue, Philadelphia, U.S.A. July 31, 1931, No. 21897. Convention date, June 5. [Class 51 (i).] In an underfeed stoker comprising main fuel feeding rams 5, as shown in the Figure, delivering into retorts provided with secondary fuel feeding elements, the actuating rods 34, 35 of the secondary fuel feeding elements are connected by pivoted rods 31, 32 to levers 26 each connected bv links 27 to the ram 5 which is hollow and adapted to receive hydraulic pressure fluid on each side of the fixed piston 11. The rods 34, 35 pass through stuffing-boxes 54 provided in the furnace wall and slide in bearings having segmental elements engaging with flattened portions of the rods to prevent angular movement thereof. Adjoining sections of the actuating rods are connected by a pin secured by a locking element engaging with a groove in the pin. Specification 173,596, [Class 51 (i), Furnaces and kilns, Combustion apparatus of], is referred to.
Patent GB-1039885-A (GB)
Title: Improvements in or relating to sugarcane mills
IPC: C13B10/06
Filed: 1963-05-31
Abstract: 1,039,885. Sugar-cane mills. WALCHANDNAGAR INDUSTRIES Ltd. and J. P. MUKHERJI. May 31, 1963, No. 21898/63. Heading B2A. A sugar-cane mill is provided with an upper floating roller the "height" of the top bearing 10 at each end of which is not less than its diameter and preferably 1. 5 times its diameter, and means L1 for lubricating the rubbing surfaces between the bearing 10 and an associated hydraulic pressure plate 9 there being sufficient clearance 9alpha around the pressure plate to permit it to move freely when the roller axis is tilted. The "height" of the bearing is the vertical distance from the top horizontal face of the bearing to the horizontal plane through the axis of the bearing bore. The mill headstock 1 houses a ram-cap including a cylinder 4 and a means 15 for supplying pressure fluid to energize a piston 3 which bears on an insert 5 a ball 7 and a further insert 8 so that the pressure plate 9 is forced down upon the bearing 10. Means L2, L3 lubricate the rubbing surfaces between the bearing and the liners 11, a further means L4 lubricating the bearing itself.
Patent GB-798638-A (GB)
Title: Improvements relating to snap-action electric switches
IPC: H01H13/42
Filed: 1956-07-16
Abstract: 798,638. Retractive switcher; actuation of switches; cases. MAXSON CORPORATION, W. L. July 16, 1956 [July 26, 1955], No. 21947/56. Class 38 (5). A dead-centre snapping-blade switch comprises similar housing-parts 10, 11, a snapping- blade 29 and support 25 therefor, contactcarriers 45, 46, and plunger 17, all formed so as to be supported by the housing parts when the latter are assembled together and secured by rivets. The blade 29 is riveted at 30 to support 25, apertured at 32, 33 to give resilience, and formed with a bowed compression member 35 which engages a notch in part 39 of support 25 so as to assist the resilience of the blade in biasing the latter into the position shown in Fig. 2. When the plunger 17 is depressed against the hump 40 on support 25, the blade snaps over against the other contact member, and returns automatically when the plunger is released. The plunger may be actuated by a handle or pedal 68 on a member 70 having an enlarged end 73 which is trapped in recesses 74 in the housing parts when the latter are assembled. Reference has been directed by the Comptroller to Specification 779,424.
Patent GB-219522-A (GB)
Title: Dog clutches
IPC: F16D11/12
Filed: 1923-08-31
Abstract: 219,522. Reinthaler, J. Aug. 31, 1923. Clutches, claw.-In a dog clutch, the centre plane e f, Fig. 1, of the clutch groove c is displaced parallel to the corresponding radial plane e<2>, f<2> of the shaft a in a direction opposite to the direction of rotation so that the clutch dog d penetrates at its pressure surface k more deeply into the shaft than on the face i struck by the driving hub b. Rotation is counterclockwise. The dog d may be one arm of a lever d<2>, Fig. 3, adapted to be turned to the disengaged position by a sliding cam sleeve p. Spring bolts q may be provided to lessen shock in engagement.
Patent GB-1116544-A (GB)
Title: Polyethers
Inventor: BESWICK GEOFFREY ERNEST
IPC: C07C43/263
Filed: 1966-05-18
Abstract: The invention relates to a process for the preparation of an ether of the formula R1-(O-R)n by the reaction of a compound of the formula <FORM:1116544/C2/1> with approximately n molecular proportions of a compound of the formula R-OH in the presence of greater than n equivalent proportions of an alkali metal carbonate, in a chemically inert liquid medium which is a solvent for the reactants and which has a dieletric constant not less than 25 and not exceeding 47, wherein R is phenyl  <FORM:1116544/C2/2> <FORM:1116544/C2/3> <FORM:1116544/C2/4> R1 is the residue left by the removal of n-hydroxyl groups from a n-hydric alcohol,  R11 is alkyl or alkoxycarbonyl, n is a digit from 1 to 3,  Ar is an aryl group, and in the case wherein R contains the naphthalene nucleus, the linkage to R11 and the second linkage are 1:4, 1:5, 2:6 or 2:7 to each other. In an example methylparahydroxybenzoate is reacted in the presence of anhydrous potassium carbonate and acetone with ethylene 1:2-bisparatoluenesulphonate to produce bis(paramethoxycarbonylphenoxy) ethane.  In another example, methyl parahydroxybenzoate is reacted in the presence of anhydrous potassium carbonate and acetone with ethylene 1:2 bis paratoluene sulphonate to produce bis (p-methoxycarbonylphenoxy) ethane.
Patent GB-535252-A (GB)
Title: Improvements in or connected with chairs
IPC: A47C1/12
Filed: 1939-07-29
Abstract: 535,252. Chairs. ANSELL, A. W. July 29, 1939, No. 22068. [Class 52 (ii)] Chairs of the type comprising upright side frames 1 and rearwardly extending horizontal base portions 6, with tip-up seats 3 and if desired tip-up arms, have the base portions converging towards the rear to enable the chairs to be nested with the side frames one behind the other in the manner shown.
Patent GB-1112524-A (GB)
Title: Improvements in or relating to the recovery and/or extraction of fluids
IPC: E03B3/28
Filed: 1966-05-18
Abstract: 1,112,524. Recovering water from humid air. SPECTRA INTERNATIONAL Inc. 18 May, 1966 [21 May, 1965], No. 22076/66. Heading B1L. Apparatus (see Fig. I) for extracting liquid water from the water vapour contained in humid air comprises a series of cone-shaped elements 3 suspended by cords 3.1 from the lids 1.1 and 2.1 of outer and inner containers 1.2 and 2.2. On replacement of the lids as in Fig. 2 (not shown), the whole set of perhaps 500 elements compacts down into the inner receptacle to leave a minimum free space. The outer container is of glass while the inner container is suitably of blackened metal. In the open form shown in Fig. 1, the apparatus is exposed all night; it is then closed at sunrise so that exposure to the sun during the day causes the apparatus to be heated and the absorbed moisture to be expelled as vapour through silvered tube 2.4 where the vapour condenses to droplets. The elements (see Fig. 3b, not shown) have ridges 3.2 for retaining the desiccant, and perforations 3.4 which allow the passage of vapour but not of desiccant. Alternatively, a central hole may suffice. In other embodiments illustrated in Figs. 4 and 5 (not shown), flat elements, instead of conical ones, are used, and the outer container is dispensed with. Specified adsorbents are charcoal, silica gel and soap, but is most preferably magnesium sulphate hydrate. The apparatus may be applied to the recovery of other condensibles such as alcohol, benzene and ammonia from industrial atmospheres.
Patent GB-206269-A (GB)
Title: Improved electric battery
IPC: H01M10/10
Filed: 1922-08-14
Abstract: 206,269. Hilditch, T. P., Wheaton, H. J., and Crosfield & Sons, Ltd., J. Aug. 14,1922. Absorbents; separators.- A storage battery is filled with an absorbent material obtained bv treating with an acid a dried and powdered gel of the kind and in the manner described in Specification 206,268, [Class 1 (ii), Inorganic compounds, other than &c.] or any analogous gel consisting mainly of silica combined with the oxideof an alkali metal or alkaline earth metal with or without other metallic oxides.
Patent GB-380902-A (GB)
Title: The manufacture of new indigoid vat dyestuffs
Filed: 1931-08-04
Abstract: Thioindigo dyestuffs are prepared by condensing a reactive a -derivative of an alkoxy-2 : 1-naphthisatin with a naphthoxythiophen, which may also contain a nuclear alkoxy group. In an example, 6-methoxy-2 : 1-naphthisatin is converted into the a -chloride, in chlorbenzene solution, by treatment with phosphorus pentachloride, and is condensed with 2 : 1-naphthoxythiophen.  The resulting dyestuff dyes cotton olive shades.  A similar dyestuff is obtained when 6-ethoxy-2 : 1-naphthisatin is used.  The dyestuffs prepared from the following pairs of components are specified, the naphthisatins being used after conversion into their active a -derivatives: 7-methoxy-2 : 1-naphthisatin and 1 : 2-naphthoxythiophen, 6-methoxy-1 : 2-naphthoxythiophen and 3-(or 6- or 7-)-methoxy 2 : 1-naphthisatin.  The alkoxy-2 : 1-naphthisatins are prepared from the alkoxy-2-aminonaphthalenes by Sandmeyer's method.  6-Methoxy-1 : 2-naphthoxythiophen is prepared from 6-methoxy - 2-cyanonaphthalene-1 - thioglycollic acid, which may be obtained according to the process of Specification 306,575, [Class 2 (iii), Dyes, &c.], from 6-methoxy-2-aminonaphthalene by introducing an ortho-sulphocyano group, treating it with an alkaline saponifying agent in the presence of a reducing agent to form a mercapto group which is then condensed with chloracetic acid, and replacing the amino group by a cyano group by diazotizing and treating with cuprous cyanide.
Patent GB-1139810-A (GB)
Title: Vapour-compression distillation
Inventor: WILLIAMSON PAUL KENYON
IPC: C02F1/16
Filed: 1965-05-25
Abstract: 1,139,810. Production of pure water; evaporators of the vapour-compression type. COURTAULDS Ltd. 24 May, 1966 [25 May, 1965], No. 22148/65, Heading B1B. Purified water is obtained from aqueous liquors, e.g. sea water, by causing the liquor to flow as a film over one surface of a thin solid film of plastics material, e.g. of polyethylene, compressing the water-vapour evaporated from the liquor film, and condensing the compressed vapour on the reverse side of the solid plastic film. The heat liberated by condensation of the vapour passes through the solid film and provides the heat required for the vaporization of water from the liquor - film. The vapour compression ratio required is below 1.1. In the apparatus shown, tubes 4 made of polyethylene film are mounted between plates 2 and 3 in a concrete tower 1. The lower header 7 is connected to vacuum pump 11. Sea water, supplied through pipe 15, is preheated in heat exchanger 12 and then flows through pipe 16 to distributor plate 8 in tower 1; the sea water then passes through annular openings in plate 8, an annular opening being provided around the periphery of each tube 4, and flows in film-form down the outer surfaces of the tubes. The vapour evolved from the sea water films is drawn from shell 5 into fan 10, and the compressed vapour is blown, via upper header 6, down the interior of the tubes 4. The condensate, i.e. purified water, collects in the lower header 7, then flows through pipe 19 and heat exchanger 12, and is withdrawn from the system through pipe 17. The concentrated brine leaves the shell 5 through pipe 20; some of this brine is recirculated to distributor plate 8 through pipe 21, and the remainder is withdrawn from the system via heat exchanger 12 and pipe 18. In an example, the thickness of the polyethylene film is 0.005 inches; and there are 1800 tubes 4 each of 50 feet length and 1.25 inches diameter.
Patent GB-711809-A (GB)
Title: Autoreduction tacheometric recording surveying instrument
IPC: G01C3/30
Filed: 1951-09-21
Abstract: 711,809. Range- and height-finders. FEDERATIVNA NARODNA REPUBLIKA JUGOSLAVIJA SAVET ZA GRADJEVINSKE POSLOVE VLADE FNRJ. Sept. 21, 1951 [Sept. 21, 1950], No. 22214/51. Class 97(1) Surveying apparatus for giving directly reduced longitudinal and vertical distances comprises a base plate carrying a fixed vertical member to which two sighting devices a pivoted about horizontal areas spaced apart vertically and also carrying a second vertical member movable horizontally on the base and carrying a bar vertically movable in said second member and engaging one or both of said sighting devices, the horizontal and vertical movements being suitably indicated or recorded. The principle on which the apparatus operates is illustrated in Figs. 1 and 3. In Fig. 1 a staff of length L is placed upon the point B the height and distance of which from the origin A, is refocused and sights are taken by a single sighting instrument successively on the two ends of the staff and simultaneously on the ends of a segment w adjacent the instrument. Measurement of the co-ordinates x, y, of the lower end M of this segment when both ends lie on the sighting lines, allows calculation of the height x and range y of the point B. In Fig. 3 no staff is used but two sighting instruments at points A-A, spaced apart by a known distance k are sighted upon the point B and the ends of the segment W brought into coincidence with the lines of sight, the co-ordinates of the point M again allowing the necessary calculation. In the apparatus shown in Fig. 4 two telescopes or open sights A A, are used, mounted on sighting bars D D, pivoted at P P, to a frame b supported by a base a on which slides a vertical frame v. Moving in slot u of the frame v is a bar T having pivoted blocks r, r, moving in grooves engaging the sighting bars, thereby establishing the length w. The frame v is moved horizontally by means of a knob m<SP>2</SP> and a rack. The rod T is moved vertically by a micrometer, these movements being recorded, if desired, by counters nx and ny respectively so that the distances x, y, may be readily obtained. For the method illustrated in Fig. 1 only the sighting device A is used.
Patent GB-206922-A (GB)
Title: Improvements in oil lamps
IPC: F23D3/00
Filed: 1922-08-16
Abstract: 206,922. Blake, J. Ayton-. Aug. 16, 1922. Wick burners, annular.-A wick burner comprises a flame controller having one or more flame openings and adapted to be rotated about the axis of the burner by means of a float or floats in the oil reservoir so that the flame openings travel over the top of the annular wick. In one form, a flame controller 9, provided with three equidistant flame openings, is carried by a stem, rotatably mounted in the top of an inner wick tube 2, and has a cylindrical rim 10 surrounding the top of an outer wick tube 3. The rim 10 is formed with a downwardly extending arm 11 provided with a helical groove or slot 12 engaged by the bent upper end of a rod 13, which passes through a guide in the top of an oil reservoir 1 and is pivotally attached to a bar 14 connecting levers 15 carrying a cylindrical float 16 and pivoted on a bracket 18 suspended from the top of the reservoir. A gallery 20 mounted on the reservoir is adapted to hold a chimney 21 provided with a window 22. In a second form, a flame controller 50 is secured by a nut 51 on a collar 52 of a shaft 53 journaled in bearings 54, 56 in a partition 55 and in a bracket 57, mounted on a partition 58, respectively. Tubes 65 provide for air circulation. The shaft 53 carries a pinion 59 in mesh with a crown-wheel 60 mounted on a horizontal shaft 61 journaled in bearings in the bracket 57 and the wall of the wick-holder respectively. The shaft 61 is cranked outside. the wick-holder to form a lever arm 63 which carries a float 64. The gears may be arranged on the outside of the wick-holder. In a third form, a burner for uses in which it is subjected to extraneous movements comprises two floats 64, arranged on opposite sides of the burner and carried by lever arms 63 of shafts 61 provided with bevel-wheels 60 meshing with a pinion on the shaft 53 carrying the flame controller 50 so that, when the burner is level, both floats move downwards and actuate the pinion and, when the lamp is tilted, the floats move in opposite directions and the pinion remains stationary. Specification 12219/15 is referred to.
Patent GB-651781-A (GB)
Title: Pulse telecommunication system
IPC: H04M9/02
Filed: 1947-08-12
Abstract: 651,781. Party line systems. STANDARD TELEPHONES & CABLES, Ltd. Aug. 12, 1947, No. 22375. Convention date, July 4,1946. [Class 40 (iv)] [Also in Group XL (c)] In a party line system each substation is allocated a time position in a recurring series of time positions and pulses are transmitted at the time position corresponding to the receiving substation. A substation may be allotted two such time positions, one for calling and the other for conversation. As shown, a source G of regularly-recurring pulses is connected to the line T and a calling subscriber A adjusts a delay line LRA connected thereto to delay the pulse to the time position of the wanted subscriber B. The delayed pulses modulated by the calling device KA pass via the unidirectional device D and amplifier E to the wire R. If the station B is free it receives pulses from G over wire T and the delay line LR<SP>1</SP>B, whose fixed delay is characteristic of station B, and if the pulses thus delayed coincide with the pulses received over R these latter are demodulated in the receiver RB to produce a calling tone. The subscriber at B then sets his delay line LRB to have a delay corresponding to station A and operates his calling device. Both stations then open contacts AA, 1<SP>1</SP>A, 1B, 1<SP>1</SP>B to introduce additional small delay lines lrA, Lr<SP>1</SP>A, lrB, lr<SP>1</SP>B in the transmitter and receiver circuits whereby conversation can be effected over pulses having slightly later time positions so that a busy subscriber cannot receive a calling signal. A busy station (say B) moreover emits pulses at its " calling " time position over contact 1<SP>4</SP>B to indicate its busy condition to an unsuccessful caller. In a modification the same time position may be used for both calling and called subscribers, the delay lines being all adjusted to the time position of the called subscriber. In a further modification one line is used for both T and R, pulses originally on these two wires being distinguished by having opposite polarities, appropriate rectifiers being inserted in the leads to the substations.
Patent GB-239707-A (GB)
Title: Improvements in or relating to toy projectors
IPC: F42B4/22
Filed: 1924-09-23
Abstract: 239,707. Brock & Co.'s Crystal Palace Fireworks, Ltd., C. T., and Brock, B. Sept. 23, 1924. Detonating toys.- A toy bomb adapted to distribute cigars, cigarettes, Christmas crackers, confections, &c. comprises a tuba a mounted on a base c and provided at its lower end with an explosive charge e and fuse d. The articles to be expelled are packed in the upper part k of the tube and are separated from the charge e by distance-pieces i, a wad g, and a strawboard disc f. The tube is closed by a lid n held in place by a paper covering m. A vertical strut ! l is disposed centrally of the chamber k. The articles to be expelled are packed each in a separate paper envelope or carton.