baber/WOPTO huggingface dataset:
Patent GB-630821-A (GB)
Title: Cyclone
IPC: B01D21/26
Filed: 1947-08-30
Abstract: 630,821. Cyclone separators. DIRECTIE VAN DE STAATSMIJNEN IN LIMBURG, HANDELEND VOOR EN NAMENS DEN STAAT DER NEDERLANDEN. Aug. 30, 1947, No. 24065. Convention date, Dec. 9, 1946. [Class 23] The upper portion 6 of the casing of a cyclone separator is conical with an included angle of 20 degrees and the portion 7 adjacent the apex is conical with an included angle of 60 degrees. The casing may comprise a series of conical portions which increase in angularity towards the apex. In place of conical surfaces, the surface may be generated by a curved line concave towards the axis, or the apical portion only may be so generated. Specification 601,063 is referred to.
Patent GB-947483-A (GB)
Title: Non-linear polyurethane prepolymers and methods of forming polyurethane foam therefrom
IPC: C08G18/48
Filed: 1959-12-29
Abstract: A non-linear polyurethane prepolymer adapted for foam formation comprises the reaction product of an aliphatic or aromatic diisocyanate with a hydroxyl-terminated ployether, said polyether having a molecular weight of from 200 to 7500 and being formed by interaction of an alkylene oxide with a polyhydric alcohol having at least four hydroxyl groups said diisocyanate being present in a stoichiometric excess corresponding to a free -NCO content of from 8% to 30%.  The prepolymer can be converted to a foam by reaction with compounds having active hydrogen atoms, such as water or a polyether. A volatile physical foamant may also be present in the reaction mixture suitable polyhydric alcohols a pentaerythritol, i-erythritol, adonitol, oxylitol, arabitol, mannitol, sorbitol, dulcitol, iditol, perseitol, volemitol, glucose, fructose, bioses, dipentaerythritol, 2,2 - dimethylol - 1,5 - dihydroxypentane and 1,3,6,9,12 - pentahydroxy dodecane.  Alkylene oxides referred to are ethylene and propylene oxides.  Oxygen atoms may be replaced by sulphur atoms, and aryl, cycloaliphatic, chloroformate and butene groups may be present. Diepoxy compounds may also be used.  In the prepolymer there may be incorporated antioxidants, stabilizing and emulsifying agents, acceleratiors, dyestuffs, fillers, softeners, titanium dioxide, carbon black, sulphur or sulphur-containing materials; The prepolymers can be used also in the preparation of coatings which can be air-dried in the presence of a catalyst such as a tertiary amine. In example (1) a prepolymer from a pentaerythritol propylene oxide condensate and toluene - 2,4 - diisocyanate is converted to foam by reaction with water, more polyetherpentaerythritol, siloxane and triethylenediamine; (3) sorbitol/polypropylene oxide condensate is used in a similar process.
Patent GB-926747-A (GB)
Title: Magic writing toy
IPC: B43L13/10
Filed: 1961-07-04
Abstract: 926,747. Writing tablets. KOHNER BROS. Inc. July 4, 1961 [April 4, 1961], No. 24141/61. Class 146 (2). A magic writing toy comprises a magic pad and a stylus, means to manipulate the stylus mechanically, a rigid translucent upper member, and an opaque pliable lower member, means to separate the pad members, the lower pad member being juxtaposed to the upper pad member, the upper facing surface of the lower pad member being adhesively pressure sensitive, the stylus being located below the lower pad member. An upper part 16 has a peripheral flange which fits over an upstanding flange on a lower part 14 pivoted centrally thereto. One end of the upper part is urged downwardly by compression springs 40 (not shown), 42, 44 extending between the two members at the other end to bring a pliable sheet 54 of coloured material, covering an aperture in the upper member, to which it is bonded, into contact with a stylus 114. The sheet 54 has an adhesive upper surface which is pressed by the stylus for writing against an upper, rigid translucent panel 58. The panel pivots by means of end tabs 60 engaging apertures in a flange on the upper part. The panel has an end finger 68 extending through a vertical slot 92 in the end flange 72 of a mask 70 surrounding the aperture. Pressure applied to the upper part over the springs separates the sheet and panel from the stylus to allow a break in the writing. Moving a slider 14 obliterates the writing by separating the sheet and panel. The slider has an oblique slot portion 84 with a horizontal and a vertical end part. The finger 68 extends into the horizontal part of the slot and when the slider is moved rises in the slots 84 and 92 to the vertical part of the slot 84 lifting the panel from the sheet. The slider engages between the flange 72 and a rib 94 on the upper part 16 and has a handle 76 and shoe which engage a track 80 on the flange. The stylus comprises a spring-urged metal ball 114 housed at one end of a cross linkage anchored at the other end by a rivet 106 extending between the upper and lower parts and supporting the spring 42. A hollow rivet 108 housing the ball has a lower ball 110 contacting the bottom wall. A manipulating member 96 extends from the linkage through an aperture in the upper part.
Patent GB-330455-A (GB)
Title: A chair-back cushion or rest, or support therefor
IPC: A47C7/42
Filed: 1929-08-07
Abstract: 330,455. Garrett, T. H. Aug. 7, 1929. Cushions, attaching to other articles. - A backrest cushion 6 has spring clips 8 secured thereto by which it can be adjustably mounted on the vertical rails of a chair back. The clips may be capable of lateral adjustment to suit the spacing of the rails and may be mounted on a supporting plate from or upon which the cushion is resiliently supported. Specification 315,456 is referred to.
Patent GB-1112805-A (GB)
Title: New derivatives of glycyrrhetinic acid
Inventor: BAXENDALE LILY
IPC: C07H15/256
Filed: 1966-05-31
Abstract: Novel compounds having the general formula <FORM:1112805/C2/1> wherein R is hydroxyl group, an alkoxy radical or a radical of the general formula <FORM:1112805/C2/2> R1 being a hydrogen atom or an acyl radical and R11 being a hydrogen atom or an alkyl group, and R1 represents a ketonic oxygen atom, a hydroxyl group, an acyloxy radical, a carboxy acyloxy radical, an alkoxy carbonyl-acyloxy radical or a carbonyl acyloxy radical, the carbonyl group of which is attached to a radical (II) with the proviso that the compounds (I) contain at least one radical (II), are obtained in a process wherein a compound of the formula <FORM:1112805/C2/3> wherein X is a hydroxyl or alkoxy radical and X1 is a ketonic oxygen, a hydroxyl group, an acyloxy radical, a carboxy-acyloxy radical or an alkoxycarbonyl-acyloxy radical, with the proviso that said compound contains at least one carboxylic acid group, is reacted with an alkyl ester of a tri-O-acyl-a -D-glucopyranosyl bromide uronic acid, whereafter if desired, the acylated hydroxyl groups and esterified carboxylic acid group in the glucuronosyl side chain are liberated by hydrolysis.  The reaction may be effected in the presence of quinoline and silver oxide and the hydrolysis carried out with methanolic trimethylamine.
Patent GB-954666-A (GB)
Title: A gas heat exchanger
IPC: F28D7/00
Filed: 1960-07-12
Abstract: 954,666. Gas heating apparatus. INDUSTRIE - COMPANIE KLEINEWEFERS KONSTRUKTIONSUND HANDELSGESELLSCHAFT m.b.H. July 12, 1960 [March 21, 1960], No. 24238/60. Heading F4S. In a gas heater, heating gas flows in a direction 7 across tubes arranged in the bundles 3, 6 disposed one behind the other in the gas path, and air or other gas to be heated flows first through the tubes of the downstream bundle 3 and then through the tubes of the upstream bundle 6, the transverse spacing X (see Fig. 2) between the tubes in the downstream bundle being less than in the upstream bundle. In the recuperator shown each tube bundle comprises two tube groups arranged one behind the other in the heating gas path. Air flows through group 1 and then through group 2 of tube bundle 3, and through group 5 and finally group 4 of tube bundle 6, leading to an outlet 21 for heated air. This arrangement is said to prevent overheating of the leading tubes 18a. In an example given, the spacing X is three times the tube diameter for the bundle 6 and between one and one-and-ahalf times the tube diameter for the bundle 3.
Patent GB-1425886-A (GB)
Title: Drive shaft coupling
IPC: A01D69/00
Filed: 1973-05-22
Abstract: 1425886 Shaft couplings INTERNATIONAL HARVESTER CO 22 May 1973 [26 May 1972] 24248/73 Heading F2U A shaft 13 (e.g. a splined power take-off shaft) with a groove 12 is coupled to a member 3 by one or more detents 10 held in the groove by a locking ring 20, means, such as a push putton 36 and radial openings 23, being provided for enabling the locking ring to be rotated between its locking and release positions by rotation of a collar 27. Before insertion of the shaft, the collar 27 is set so that the push button is aligned with one of the radial openings 23 and a ball detent 10, a pin 25 being displaceable by the push button on to the ball. Upon insertion of the shaft, the balls are displaced outwardly by the splines to release the locking ring 20 which then rotates in the direction of the arrow under the influence of a torsion spring 55. As soon as the balls are aligned with the groove they are urged inwardly by cam surfaces 60 and retained by cylindrical surfaces 62, further rotation of the locking ring being prevented by a stop 64. To release the shaft 13, the collar 27 is rotated while pressing the button 35 until it locates an opening 23. The collar and locking ring are then rotated together against the action of the torsion spring 55. When the button 35 and pin 25 become aligned with an opening 7 housing a ball, the pin enters the opening to lock the locking ring in the release position. The shaft 13 is then withdrawn and the balls displaced out of the groove to release the locking ring for it to return under the influence of the torsion spring. When the stop 64 is engaged the cylindrical surfaces 62 of the locking ring again hold the balls in their innermost position.
Patent GB-369517-A (GB)
Title: Improvements in or relating to blades for metal-saws
IPC: B23D61/12
Filed: 1931-08-28
Abstract: 369,517. Saws. LOOS, E., 78, Konigstrasse, and KINKEL, H., 79, Konigstrasse, Remscheid, Germany. Aug. 28, 1931, No. 24298. Convention date, Sept. 9, 1930. [Class 61 (ii).] A hack saw blade has the fixing holes a, b out of the line c of the blade axis and near the line of the teeth d in order to tension the blade in the line of the teeth, thus avoiding quivering. A doubleedged blade has two pairs of fixing holes. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a construction of blade, Fig. 2 (Cancelled), wherein the same effect is produced by making the toothed edge concave ; this subject-matter is not included in the Specification as accepted.
Patent GB-671024-A (GB)
Title: Sewing machine and attachment therefor
IPC: D05B35/02
Filed: 1950-10-05
Abstract: 671,024. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Oct. 5, 1950, No. 24315/50. Class 112. [Also in Group XXV] Work - guides. - A guide for the doublefolded edge of work in an overedge sewing- machine comprises a U- shaped piece of wire adjustably fixed on the presser-foot with its limbs parallel to the lower face of the presser-foot. In the form shown the upper limb 41 is bent upon itself to form a parallel length 45 with its further end bent back again to receive a screw 47 by which it is clamped on the presser-foot 22; the lower limb 42 has a flattened under-surface, and its end is bent at right-angles to form a guide portion 48, flattened above and below, to fit in the first fold of the work, the second fold lying between the limbs 41, 42 of the device. A cooperating floating edge guide such as that described in Specification 608,319 is preferably used. Members such as shoulder straps to be attached to the work may be passed between the limbs 41, 45 of the guide. Presser-feet - The presser-foot is tiltably mounted on the presser-arm 21, the end of the latter being rounded to fit in a notch 34 in the foot and the two members being held together by a plate 36 fixed on the foot engaging over a lateral lug, with upturned end 38, on the presser arm. Specifications 605,552 and 608,319 are referred to.
Patent GB-722162-A (GB)
Title: Improvements in or relating to filters
IPC: B01D33/06
Filed: 1952-09-30
Abstract: 722,162. Rotary filters. GEORGIA KAOLIN CO. Sept. 30, 1952 [Oct. 2, 1951], No. 24431/52. Class 46. A continuously-operating filter comprises a vacuum filter drum 10a concentric with and rotatable on a hollow bearing support member 22, a plurality of contiguous filter cells 11 on its outer surface and having axial leading and trailing edges, at least one passage 16, 16a through the drum surface from the drum interior into each cell adjacent each of the leading and trailing edges thereof, and a slidable shoe 26 sealing the passages between at least one filter cell and the drum interior at all times, the shoe being articulated on the member 22 e.g. by side arms 24 pivoted on a hanger member 23, and a (diaphragm) pressure device 35 being connected to the shoe for maintaining substantially uniform sealing pressure between the shoe and the passages. The shoe 26 preferably extends axially over only a small central part of the drum, and bears against a perforate wear plate 20 removably secured to the drum interior. Preferably also the passages sealed by the shoe 26 are placed in communication with a conduit 30 in the member 22 by a resilient conduit 28 and through a passage 27 (not shown) in the shoe itself, so that an air pressure equal to or greater than atmospheric may be applied to the cell sealed from the sub-atmospheric pressure within the drum. An adjustable sealing gasket is accommodated in a rectangular groove provided in the shoe surface contacting the wear plate, just within the shoe periphery. The rectangle enclosed by the gasket includes the end of the passage 27.
Patent GB-744647-A (GB)
Title: Improvements in or relating to magnetic electron lenses and pole pieces for use therein
IPC: H01J37/14
Filed: 1953-09-04
Abstract: 744,647. Electron lenses. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 4, 1953 [Sept. 9, 1952], No. 24508/53. Class 39 (1). In magnetic electron lenses for electron microscopes, of the kind in which the beam passes through bores 3, 4, Fig. 1, in two polepieces 1, 2 opposing each other to form a gap, the material in.the region adjacent the bore and the gap is arranged to have a greater incremental permeance in the axial direction than in any direction perpendicular to the axis; this gives a field curve with steeper flanks and thus a greater lens strength for the same magnetomotive force. The result may be achieved by cutting a slot 8; or by mounting separate cylinder 14, Fig. 3, within a widened bore by means of copper or aluminium 16; or by winding copper and iron strips in a double layer helically within a widened bore, Fig. 4 (not shown); or by making the whole pole-piece, or the helical strip of Fig. 4 (without the copper spacer), of magnetically anisotropic material. Both pole-pieces may be so treated, or only the one on the object side. The pole-pieces may be energized by coils or by permanent magnets.
Patent GB-1253337-A (GB)
Title: Improvements in neutralizing of unwanted signals by location of conductors on contiguous printed circuit boards
IPC: H05K3/34
Filed: 1970-05-21
Abstract: 1,253,337. Keyboard circuits. GENERAL ELECTRIC CO. 21 May, 1970 [4 June, 1969], No. 24542/70. Heading G4H.  In a keyboard of the kind in which a gapped core 10, 12, 14, Fig. 2, is associated with each key, the gap of a core being closed by operating the corresponding key, a drive line 20 threading all the cores and sense lines 22, 24, 26 threading different combinations of cores so that, according to which key is pressed, a corresponding pattern of signals appears at the outputs when the drive line 20 is pulsed by generator 18, unwanted signals on the sense lines induced by running in proximity to the drive line are cancelled in the form of Fig. 2 by extensions 30, 32, 34 of the sense lines running in the opposite direction adjacent the drive line. The conductors are printed on a printed circuit board, apertures being provided to receive the gapped cores. In the form of Fig. 3, a separate conductor 40 is provided, adjacent the drive line 20, through which the sense lines are connected to earth. Tappings 42, 44, 46 and 48 are provided, the sense lines being connected to the terminal providing the appropriate neutralizing signal. In another form (Fig. 4, not shown) the drive and sense lines are provided on separate printed circuit boards adapted to be assembled in a pack. The drive line has a limb running in one direction threading all the cores and a limb running in the opposite direction to induce neutralizing currents in the sense lines. The sense lines have appropriate portions running adjacent the second limb of the drive line to pick up the necessary neutralizing signal.
Patent GB-187107-A (GB)
Title: A new or improved combined toy and educational device
IPC: A63F7/00
Filed: 1921-09-16
Abstract: 187,107. Jillott, T. Sept. 16, 1921. Teaching time and arithmetic. - Relates to apparatus for playing educational table games and comprises an inclined board a, Figs. 1 and 3, provided with a hinged bridge c at its upper end. Balls are rolled through holes d in the bridge and come to rest in depressions e where they are retained by staples f. Pins g are provided to deflect the balls. The depressions e are marked with time values and the score is indicated on clock dials j, j<1> situated on the bridge c. Supplementary scoring means comprising numbered holes l adapted to receive pegs may be provided.
Patent GB-650155-A (GB)
Title: Process for preparing linear polyamides from cyclic omega-lactams (2-ketopolymethyleneimines)
IPC: B01J19/24
Filed: 1948-09-20
Abstract: <PICT:0650155/IV (a)/1> Omega-lactams of the general formula <FORM:0650155/IV (a)/1> wherein n is at least 5, are converted into linear polyamides of the general formula . . . NH(CH2)nCO . . ., in admixture with a molten polyamide, also of the general formula . . . NH(CH2)nCO . . ., the intrinsic viscosity of which is at least 0.4, after which the mixture is heated at a temperature between 170 DEG C. and 300 DEG  C. until the desired degree of polymerization of the mixture has been obtained. A reaction tube 1 with jackets 2, 3 and 4 maintained respectively at 250 DEG  C., 275 DEG  C. and 235 DEG  C. is filled with molten polycaproic amide of intrinsic viscosity of 0.8 to constant level 5. Caprolactam is supplied to the tube via pump 7 and the polyamide is discharged via pump 6.  A pump 8 returns some polymer to the upper part of the reaction tube.  Water vapour may be supplied via a tube 9 and the upper end of the reaction tube may be provided with a reflux condenser.  Specifications 506,125, 535,421, 538,619 and 677,771, and Netherlands Specification 54,864 are referred to.
Patent GB-1015294-A (GB)
Title: Improvements in or relating to lids, particularly lids for containers in which a vacuum exists
IPC: B65D41/04
Filed: 1963-06-21
Abstract: 1,015,294. Stoppers &c. H. H. REUSS, [trading as BLECHWARENFABRIK GUSTAV GRUSS & CO.]. June 21, 1963 [July 23, 1962], No. 24687/63. Heading B8T. A lid, particularly for containers in which a vacuum exists, has screw threads, ribs 5, or else bayonet means provided to engage with corresponding threads or projections on the neck of the container, and has an outwardly projecting but inwardly rolled rim 7 which does not collect dirt on its outer smooth surface 9. A moulded packing ring 10 is provided and the top 2 of the lid is curved slightly and is made from a thin steel sheet which deforms with a vacuum in the container.
Patent GB-1037975-A (GB)
Title: Improvements relating to high-voltage insulating bushings
IPC: H01B17/28
Filed: 1961-07-07
Abstract: 1,037,975. Bushings. A. REYROLLE & CO. Ltd. Oct. 5, 1962 [July 7, 1961], No. 24713/61. Addition to 967,853. Heading H2C. The parent Specification is directed to a method of making a high voltage insulating bushing in which a strip of insulating sheet material, such as corrugated paper is wound around a mandrel to form a continuous layer having passages which give access to all parts of its interior, and electrically conducting inserts 13 for stress grading purposes are interposed between selected layers. The whole is then impregnated with uncured synthetic casting resin mixed with an inorganic filler or thermoplastic resin and at least partially cured. According to the present invention a number of such bushings are formed simultaneously on a single mandrel 10, which may be the actual conductor, and severed into sections containing at least one insert group.
Patent GB-1343154-A (GB)
Title: Radioactive labelling device
IPC: A61K51/12
Filed: 1971-04-19
Abstract: 1343154 Radioactive compositions MINNESOTA MINING & MFG CO 19 April 1971 [26 March 1970] 24717/71 Heading G6R For preparing radioactively labelled microparticles for use in medical diagnosis, a container 18 is divided into two compartments by a porous plate 22 and contains microparticles and a labelling reagent; the ends of the container are sealed by stoppers 16, 29 through which a syringe needle may be inserted for introduction of liquid or withdrawal of a suspension of the particles. The microspherical particles may consist of albumin, gelatine, hemoglobin, amylose, insulin, glycogen, colloidal sulphur, or starch, to which ferric hydroxide or silver iodide may be added. When radioteohnetium is being used, a particulate resin hydrogen ion source 24 is provided, held in place by packing 26, and a reagent tablet 20 contains sodium thiosulphate as a reducing agent together with a wetting agent to suspend the microspheres, a filler, binder, and lubricant. A solution containing radiotechnetium is introduced by means of a needle at 29 and passes through the resin 24 and filter plate 22 into compartment 21. The container is agitated, heated, cooled, and the supernatant liquid removed from the labelled microparticles, which are then suspended in saline solution and withdrawn for injection. A layer of granular alumina carrying Mo 99 in the form of ammonium molybdate may be arranged between the resin 24 and the packing 26; radiotechnetium solution is formed when saline solution is introduced through stopper 29 and passes through the alumina into the container 18.
Patent GB-986301-A (GB)
Title: Improvements in or relating to cavity resonators for use as delay circuit elements
IPC: H05H9/02
Filed: 1963-06-21
Abstract: 986,301. Travelling wave tubes; particle accelerators. CSF-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. June 21, 1963 [July 4, 1962], No. 24720/63. Heading H1D. A cavity resonator for use as a delay circuit element, e.g. in a travelling wave tube or particle accelerator, comprises an envelope 1 having at least one axis of symmetry 7, a series of drift tubes 3 located along the axis and each supported by a rod-shaped element 4 situated within a common plane passing through the axis, the elements being fixed alternately to opposite points of the envelope thereby forming an interdigital structure in an axial plane of the envelope, and conductor 5 having its extremities fixed to the envelope and undulating to and fro between successive drift tubes within a plane passing through the axis. The cross-section of the envelope may be rectangular, circular, or elliptical, and the drift tubes may be located at equal intervals from each other or the intervals may vary. The plane containing the elements 4 and the plane containing the conductor 5 may be coincident, perpendicular or at an angle. Apertures 6 are provided in the conductor 5 for the passage of an electron beam; the apertures may be replaced by rings. In a backward-wave travelling wave tube, a resistive coating is employed to absorb forward wave components. A number of such resonators may be coupled together and the whole device act as a particle accelerator, e.g. an ion accelerator, each resonator 1 having a source of R.F. currents and a vacuum pump.