baber/WOPTO huggingface dataset:
Patent GB-1274599-A (GB)
Title: Gimbal suspensions
IPC: G01C19/22
Filed: 1970-06-08
Abstract: 1,274,599. Universal joints. R. L. ANDREWS (Litton Industries Inc.). 8 June, 1970, No. 27702/70. Heading F2U. [Also in Division G1] A gimbal suspension connecting a gyroscope rotor 29 to a drive shaft 21 comprises two gimbal systems connected in parallel between the rotor 29 and the shaft 21. The gimbal elements are connected to the shaft and the rotor by torsion springs, and the spring constants and the moments of inertia of the various components are arranged to give the rotor and its suspension a natural frequency which approximates to the rotor spin frequency N, the two gimbal systems giving rise to opposing 2N rectification torques so that drift and spurious outputs due to shaft wobble are substantially eliminated. In Fig. 2 each gimbal element comprises a pair of diametrically opposed members 31, 35 or 33, 37. Each member includes integral torsion springs 39, 41 (for member 31) with cruciform cross-sections and mutually perpendicular axes. The outer spring 39 carries a plate to which the rotor 29 is bolted. The inner spring 41 carries a 90 degree segment 81 which engages the shaft 21. Conical ends to the segments enable them to be clamped to the shaft by rings (93, 101) (Fig. 1, not shown). In Figs. 9, 12, each gimbal element comprises a rectangular frame 163, 165 having outer torsion springs 167, 169 or 171, 173 at right angles to inner torsion springs 179, 181 or 175, 177. The frames lie in substantially the same plane, with interengaging cutouts 183-191 at their crossover points providing clearance for limited relative movement. In Fig. 14 (not shown), leaf springs (306-321) replace the cruciform springs, each inner spring of one gimbal element being inclined at an equal and opposite angle to a radial plane containing the shaft 21 axis and the spring axis, relative to the aligned outer spring of the other gimbal element, to give isoelasticity of the suspension. Other springs, such as torsion wires or V-springs may be used.
Patent GB-1013866-A (GB)
Title: Improvements in filter leaf support structure
Inventor: SCHMIDT IRVING
IPC: B01D29/39
Filed: 1964-07-06
Abstract: 1,013,866. Filter leaves. MULTI METAL WIRE CLOTH CO. Inc. July 6, 1964, No. 27745/64. Heading B1D. A filter leaf comprises a bag, Fig. 1 (not shown), stretched over a support structure consisting of two plastics sheets 12, 13, each having corrugations forming vertical channels 16 and marginal portions forming a tubular border 32, the lower horizontal portion of the border forming a filtrate conduit, into which channels 16 open at 24, the conduit having an outlet 23. Sheets 12, 13 are vacuummoulded polystyrene and are adhesively joined at inturned flanges 20, 22. The bag may be woven nylon or metal. Outlet 23 may be formed as a half-cylinder on each sheet 12, 13, or separately, Fig. 6 (not shown), and the structure may broaden adjacent to the outlet Fig. 5 (not shown). In use, one or more leaves are immersed in the water of a swimming pool, being located in an adjoining cavity, and a vacuum pump connected to outlet(s) 23.
Patent GB-805055-A (GB)
Title: Improvements in or relating to heating elements for gas stoves and the like
Inventor: LEGGETT SIDNEY CHARLES
IPC: F24C15/10
Filed: 1956-09-11
Abstract: 805,055. Grilling stoves; radiants. DREW, Ltd., H. B. July 25, 1957 [Sept. 11, 1956], No. 27786/56. Class 126 A grill or heating element for a gas stove &c. comprises an expanded metal sheet 1, Fig. 2, supported in an inclined plane by the flanges 8, 9 of a sheet 4, Fig. 1, the flange 8 being deeper than the flange 9. Rows of perforations 5 in staggered relationship are formed proud of the upper surface of the sheath, the perforations being surrounded by conical surfaces formed by dimpling.
Patent GB-1075612-A (GB)
Title: Composite reinforced resin sheet
IPC: B29C70/00
Filed: 1964-07-06
Abstract: 1,075,612. Laminates and laminating. MINNESOTA MINING & MANUFACTURING CO. July 6, 1964 [July 5, 1963], No. 27827/64. Heading B5N. A composite sheet comprises a layer of uniformly distributed, non-woven, linearly aligned, continuous high-strength filaments saturated with and held together by a thermosetting resin binder composition, preferably an epoxy resin and an overlay tissue of non-woven, randomly interlaced, smooth, organic staple fibres adhered to the resin-impregnated layer but at most only partially impregnated by the resin. The sheet may be stored in roll form. The resin composition has a viscosity of 1 million -35 million poises at room temperature and is capable of remaining so for months under storage conditions, but is fusible and heatcurable under heat and pressure to form a resin-bonded product. The volume ratio of filaments to resin lies within the range 65 to 35 and 35 to 65 and the thickness of the layer is not more than 20 mils (0À5 mm.) preferably less than 15 mils. The surface overlay, which has a weight of between 0À2 to 1 ounce per square yard and a thickness of not more than 5 mils, the thickness in mils being about 2 to 8 times the weight in ounces per square yard, may be in the form of a non-woven fleece, the fibres being of polyethylene terephthalate, polypropylene, P.V.C. or nylon. As shown, glass filaments are drawn from spools 10 through an eyelet board 11 in contiguous linearly-aligned relationship, between rolls 12 and through combs 13 and 14 which space the ends of the filaments to uniform density, e.g. 200 ends per inch (80 per cm.) The web passes through a bath of resin 16 and then through heated rolls 19 and 20 to remove excess resin after which it meets a woven issue 22 of randomly interlaced extruded staple fibres while passing between rolls 20 and 23 so spaced apart that the tissue becomes partially impregnated with resin. The composite sheet is cooled by air-jets 26 and wound into a roll at 27. The filaments in the impregnated layer may be glass, preferably having a priming of a silane or an organo-metallic complex, or of oriented polyethylene terephthalate, nylon or rayon. To make panels cross-laid cut lengths of the composite sheet are superposed and hot pressed.
Patent GB-509488-A (GB)
Title: Improvements in and relating to studs for sports-shoes
IPC: A43C15/16
Filed: 1937-10-13
Abstract: 509,488. Studs for athletic footwear. HAUBENSAK, W. Oct. 13, 1937, No. 27902. Void. Convention date, Oct. 13, 1936. [Class 17 (iii)] A flanged member with an internally screw-threaded socket 1 is non-rotatably secured, either by nails through holes in the flange 2 or by radial spikes 3 formed integral with the flange 2, in a sole S or heel of a shoe, and a stud 7 with an integral or attached shank 8 is screwed into the socket to attach the stud. The upper face of the stud 7 may be concave and provided with radial grooves, and the sides may be flattened for engagement by a spanner to tighten the attachment. The shank 8 which may be embedded into the material of the stud has two spaced discs 9, 10, the upper of which is provided with notches 11.
Patent GB-816717-A (GB)
Title: Improvements in or relating to electro-forming processes for semiconductor devices
Inventor: SIM ALAN COUDRAY
IPC: G01R31/26
Filed: 1956-09-13
Abstract: 816,717. Electroforming semiconductor devices. STANDARD TELEPHONES & CABLES Ltd. Sept. 13; 1956, No. 27975/56. Class 37. A process for electroforming a device comprising two electrodes arranged close together in contact with the surface of a semiconductor body includes the steps of passing a continuously increasing electroforming current through the body from one electrode to the other, automatically measuring the resistance between the electrodes, and automatically preventing further increase of the forming current when this resistance reaches a predetermined value. In the embodiment when the predetermined value of resistance is reached the current is held constant for a specified, period and then switched off using the controlling circuit shown in Fig. 1. The interelectrode resistance forms one arm of a Wheatstone bridge fed by the D.C. amplifier 47, 48, 49, 7. The bridge output is fed to a D.C. amplifier 11 (Fig. 3, not shown) giving zero output until point 10 is positive to 9, i.e. when the inter-electrode resistance falls to just below the predetermined value, when it delivers a large positive pulse to the right-hand grid of multi-vibrator 19. Under initial conditions the left-hand sides of multivibrators 18 and 19 are both conducting and in consequence rectifiers 34, 39 are forward biased, thereby short circuiting capacitor 36. To start the forming operation switch 41 is moved to the lower position. The negative pulse delivered to the grid of valve 18, which is isolated from the corresponding grid of valve 19, switches the multivibrator to its unstable condition with the right-hand half conducting. The condenser 36 is then charged through resistor 38 and the output current of valve 7, fed to the bridge circuit, increases from zero. When the predetermined resistance between electrodes 2, 3 is attained, the positive pulse from amplifier 11 changes multivibrator 19 over to its unstable condition. As a result, condenser 36 is isolated from its charging circuit and the current through the bridge maintained constant until, after a predetermined time, multivibrator 18 reverts to its stable condition. The bridge current then falls to zero as the condenser rapidly discharges. The forming process described may also be applied to the coaxial type of point contact transistor and to point contact diodes. If the forming current is unstable the device is shunted with a resistor large compared to the adjacent arm 6 of the bridge. Specifications 681,809, [Group XXXIX], and 747,198 are referred to.
Patent GB-1268547-A (GB)
Title: Improvements in combustion chambers or nozzles for rocket propulsion and like units
Inventor: MALBURG WERNER
IPC: F02K9/64
Filed: 1969-06-03
Abstract: 1,268,547. Making combustion chambers and nozzles; welding by fusion; soldering. MESSERSCHMITT-BOLKOW G.m.b.H. 3 June, 1969, No. 28103/69. Headings B3A and B3R. [Also in Division F1] Cooling channels 2 formed in the wall of a combustion chamber or nozzle of a rocket propulsion unit are sealed by rods 3. The rods 3 are secured to the ribs 4 between the cooling channels 2 by adhesive, welding, brazing or soldering. The rods 3 are correctly positioned by inserting flexible spacers (5a, 5b) (Figs. 1 and 4, not shown) into each channel 2. Alternatively, the rods 3 are provided with shoulders 9 or spaced elements 12 which engage the upper surfaces 10 of the ribs 4 or the rods 3 may rest on steps 11 in the rib walls. Prior to joining, the rods 3 are pressed into position by a roller (14) moving in front of a welding device (13) or clamping strips 15, may be wrapped around the combustion chamber or nozzle. The joining methods include electron beam welding, protective gas welding, diffusion, soldering or soldering by using a soldering foil or bar or by depositing solder layers by evaporation.
Patent GB-398039-A (GB)
Title: Improvements in or relating to rolling mills for the continuous rolling of metal strips or the like
IPC: B21B39/14
Filed: 1932-10-10
Abstract: 398,039. Rolling strips. KRUPP GRUSONWERK AKT.-GES., F., Buckau, Magdeburg, Germany. Oct. 10, 1932, No. 28216. Convention date, Nov. 25, 1931. [Class 83 (iv).] Strip is rolled in a continuous mill comprising roll stands 1, 2, 3 each consisting of working rolls 4, 5 and backing rolls 6, 7. The strip is transferred from each roll stand to the next by conveyers 8, 9 which can be separated to allow the strip to " loop " if the succeeding pair of rolls runs at lower speed. One of the conveyers may be positively driven as by a chain driving a bevel gear 34, the other conveyer being frictionally driven thereby. The shafts of the conveyer pulleys 10 .. 13 are secured to longitudinal intergeared shafts 16, 24, so that on one of these latter shafts being rocked, as by a link 37, the upper conveyer 8 moves bodily upwards about the shaft 16 while the lower conveyer 9 moves bodily downwards about the shaft 24.
Patent GB-436993-A (GB)
Title: Improvements in or relating to materials for use as mortar, cement, a substitute for wood or the like
IPC: C08L93/02
Filed: 1934-10-04
Abstract: A thin paste, such as varnish, comprises 3 parts of pulverulent wood, 1 part of powdered shellac with an excess of solvent such as methylated spirit.  White shellac may be used or pigments added.ALSO:A plastic mass comprises 3 parts of pulverulent wood and 1 part of powdered shellac with a solvent such as methylated spirit. White shellac may be used or pigments may be added.  With an excess of solvent a thin paste, like varnish, is produced.  The material may be marketed as a dry powder or as the plastic mass. The plastic mass is particularly adapted for providing a skin or shell on the hull of model boats as in Specification 418,464, [Group XV].
Patent GB-1216284-A (GB)
Title: An improved resilient clip
Inventor: RAYMOND ALBERT VICTOR
IPC: F16B5/12
Filed: 1969-06-05
Abstract: 1,216,284. Stud and socket fastenings; clips. A. V. RAYMOND. 5 June, 1969 [7 June, 1968], No. 28475/69: Addition to 1149268. Heading E2B.  A resilient synthetic plastics clip 10 for attachment to a support provided with a headed pin 26 projecting therefrom, comprises a body portion 11 having an aperture 12 extending thereithrough and four resilient tongues 13-16 which project into the aperture and lie wholly within the depth of the body portion, the tongues defining a substantially, circular cylindrical bore 19 and being arranged on two diagonals of the bore, each pair of adjacent tongues defining a recess 20 or 21 and a tapered guideway whereby the headed pin 26 can be passed through the recess 20 or 21 and then moved laterally through the guideway so as to separate the end portions on the tongues and snap engage in the bore 19. The body portion is formed with undercut sides on to which a moulding (not shown) may be snap engaged.
Patent GB-908806-A (GB)
Title: Improvements in or relating to surface condensers
Inventor: SCHULENBERG FRANZ
IPC: F28F27/02
Filed: 1959-08-20
Abstract: 908,806. Air-cooled surface condensers. HAPPEL G.m.b.H., [trading as GEA LUFTKUHLERGESELLSCHAFT HAPPEL G.m.b.H. & CO. KOMM.-GES.]. Aug. 20, 1959, No. 28533/59. Class 64 (3). In a surface condenser in which cooling air is forced over a plurality of finned tube groups connected in parallel to a supply of steam to be condensed therein, means are provided to cause steam of approximately equal amount and pressure to be supplied to the inlet header of each tube group and to be so distributed amongst the tubes of each group that in all the tubes condensation is completed near the point where the tubes lead into the condensate collecting chamber, more highly cooled tubes receiving correspondingly more vapour. In Fig. 6, such steam distribution is effected by baffles 18 in the steam inlet header 16 of the tube group. These baffles which need not be of the same kind in all the tube groups, are spaced apart and project into the steam supply conduit 6 by a distance which increases in the direction y of steam flow. In Fig. 8 a baffle 20 having apertures 21 therein of progressively decreasing size in the direction of air flow X over the tubes 13 is provided in the steam inlet header of the tube group. Fig. 7 shows a further form in which nozzles 19, diaphragms or other throttling means are provided at the inlet ends of individual tubes 13. Fig. 3 shows a preferred arrangement of the tube groups in a condenser, the tube groups being arranged in banks 7, 7a each connected to a branch 6 of the main steam supply pipe (not shown) and cooling air being blown upwardly over the tubes by independently operable fans 9. The pitch or angle of the fan blades may be adjustable to vary the quantity of air delivered by each fan. To provide for a uniform flow of steam, the steam supply to the branches 6 may be through a ducts reducing in cross-sectional area in stages from the steam source. The branches 6 may also be of decreasing area in the direction of steam flow.
Patent GB-382054-A (GB)
Title: Improvements in or relating to breathing appliances
IPC: A62B7/10
Filed: 1931-10-14
Abstract: 382,054. Respiratory appliances. DAVIS, R. H., 187, Westminster Bridge Road, London. Oct. 14, 1931, No. 28548. [Class 81 (ii).] In self-contained breathing apparatus, particularly for s u bmarine use, comprising a breathing bag 12 containing an absorbent canister 20 connected by a tube 11 with the mouthpiece, and carrying oxygen supply means such as an oxygen cylinder 14, strapped to the underside of the bag and communicating with a frangible oxygen capsule within the bag, a separate inflatable bag 21 is detachably connected with the bag 12, as by clips or turnbuckles 120, either at the top and bottom or at the top only, to increase the buoyancy of the apparatus or to compensate for loss of buoyancy on exhaustion of the breathing bag. The bag 21 may be inflated by the user through a cock-controlled tube 22 or by the provision of a frangible capsule of compressed air or oxygen in the bag, or by both means. A relief valve 25 may be provided on the side wall of the bag. In a modification the bag 21 is detachably secured to a part of the apparatus other than the bag 12, for example to harness on the back of the wearer, and is connected by a flexible tube with a two-way cock in the breathing tube 11, which permits the exhaled breath to be passed to the breathing bag or the bag 21 at will. Alternatively the bag may be provided with a detachable flexible tube which communicates with a non-return valve in the wall of the breathing bag and through which the auxiliary bag may be inflated. These features may be applied to any of the constructions described.
Patent GB-1236822-A (GB)
Title: (ANDROST-17beta-YL)-alpha-PYRONES AND PROCESS FOR THEIR MANUFACTURE
IPC: C07J19/00
Filed: 1968-06-17
Abstract: 1,236,822. Butadienolides. FARBWEBKE HOECHST A.G. 17 June, 1968 [16 June, 1967; 25 Aug., 1967], No. 28682/68. Heading C2U. Compounds of formula (wherein Y is a free, ketalized or thioketalized oxo group, a hydrogen atom and a free or etherified or esterified hydroxyl group, or a #<SP>2</SP>-, #<SP>3</SP>- or #<SP>3,5</SP>-enolether, -enolester or -enamino grouping, and wherein there is optionally present one or more features selected from: #<SP>4</SP>, #<SP>5</SP>, #<SP>9(11)</SP>, A<SP>11</SP> and #<SP>14</SP>-unsaturation, a 4-, 6- or 15-free, etherified or esterified hydroxyl group and a 15-free or ketalized oxo group, and wherein any hydrogen atoms present in the 5- and 14-positions may have the α- or #-configuration), which compounds are claimed per se when they contain at least one carboncarbon double bond in addition to the double bonds in the pyrone ring, are prepared from 21-acetalized 20,21-dioxo steroids, wherein any oxo group in the 3- or 15-position is protected, by the routes shown in the following reaction scheme: wherein R 1  is alkyl, aryl or alkylaryl, R 3  is C 1-4  alkyl and Hal is Cl, Br or I. The reactants used are: (a) [Ph 3 PCH 2 OR 1 ]Hal in the presence of an anhydrous base in an inert organic solvent: (b) selective hydrolysis; (c) (R 2 O) 2 - P(O)CH 2 COOR 3 , wherein R 2  and R 3  are each C 1-4  alkyl, in the presence of an anhydrous base in an inert organic solvent; (d) acid or alkali; (e) acid or alkali; (f) acid; (g) Me 3 S<SP>+</SP> - Hal- or Me 3 SO<SP>+</SP>Hal<SP>-</SP> (Hal = Cl, Br or I) in the presence of an anhydrous base in an inert organic solvent; (h) hydrohalic acid; (i) base; (j) either (R 2 O) 2 P(O)CH 2 COOR 3  in the presence of an anhydrous base in an inert organic solvent or Ph 3 P = CH-COOR 3 ; (k) acid; (1), (m) and (n) acid or base. The final products are interconvertible by esterification, de-esterification, etherification, de-etherification, ketalization or deketalization. 3# - Tetrahydropyranyloxy - 21,21 - dimethoxy- 5-pregnen-20-one is prepared from the free 3#-ol by reaction with dihydropyran. 3 - Ethoxy - 21,21 - dimethoxy - 3,5,14 - pregnatrien-20-one is prepared from 21-acetoxy- 4,14 - pregnadiene - 3,20 - dione via 21- hydroxy - 4,14 - pregnadiene - 3,20 - dione, 3,20 - dioxo - 4,14 - pregnadien 21 - al and 21,21 - dimethoxy - 4,14 - pregnadiene - 3,20- dione. Scillarenin is prepared by reduction of scillarenone, the latter being prepared by hydration of 14-anhydro-scillarenone. The compounds of Formula (I) are stated to possess positive inotropic, diuretic and cardiovascular activities and may be made up with carriers into pharmaceutical compositions for oral and parenteral administration.
Patent GB-833758-A (GB)
Title: Method of brazing
IPC: B23K35/30
Filed: 1956-09-21
Abstract: A cupro-nickel alloy for brazing contains more than 50% of copper but not more than 2% of substances other than copper, substantially 20% nickel; (b) subbe in the form of a foil may have the following compositions: (a) substantially 80% copper, substantially 20% nickel; (b) substantially 70% copper, substantially 30% nickel.
Patent GB-774573-A (GB)
Title: Improvements in apparatus for x-ray crystallography
IPC: G01N23/207
Filed: 1952-04-05
Abstract: 774,573. X-ray apparatus. LANG, A. R. July 2, 1953 [April 5, 1952], No. 28949/56. Divided out of 774,571. Class 98(1) An X-ray diffractometer includes means for supporting in the path of a primary X-ray beam diverging from a source 1 of X-rays an X-ray transmission specimen 2 in order that the X-rays may be transmitted therethrough by diffraction in the form of a diverging secondary X-ray beam having a virtual focus at 4, means for rotatably adjusting the supporting means about an axis 3 substantially perpendicular to the primary beam, a reflection crystal monochromator 5 for reflecting the diverging secondary X-ray beam into a beam of X-rays converging to a second focus, a barrier 6, 7, having a slit at the second focus and a detector 8 in the path of the.beam transmitted through the slit. The monochromator 5, the barrier 6 and the detector 8 may be mounted as a unit for rotation about the axis of rotation 3 of the specimen. It is stated that if the incident and diffracted rays make equal angles on either side of the specimen 2, the virtual focus 4 lies on a circle centre 3 passing through the X-ray source 1, while crystal 5 touches a circle also passing through 4 and 6. The crystal 5 may be of quartz, lithium fluoride, aluminium, copper or zinc. The Provisional Specification also refers to the subjectmatter of Specification 774,572.
Patent GB-483737-A (GB)
Title: An improved bed-side cabinet
IPC: A47B79/00
Filed: 1936-10-26
Abstract: 483,737. Cabinets. MEAD, W. Oct. 26, 1936, No. 29015. [Class 52 (i)] Detachable panels A on the sides of a cabinet may be inserted in slots B so as to project cantilever fashior for use as a table.
Patent GB-209858-A (GB)
Title: Improvements in printed transfer
IPC: B44C1/175
Filed: 1922-10-25
Abstract: 209,858. Burdick, C. L., and Done, W. T. Oct. 25, 1922. Transfers.-The paper or like backing is coated with gelatine or other readily soluble material and then with a transparent film of celluloid. The design is then printed on the celluloid and if desired a further film of transparent or coloured celluloid superimposed. The last film may be coated with an adhesive, or a celluloid solvent may be used for fixing the transfer.