baber/WOPTO huggingface dataset:
Patent GB-1475591-A (GB)
Title: Prepregs for high voltage electrical devices
IPC: H01F5/06
Filed: 1974-06-17
Abstract: 1475591 Epoxy resin prepregs WESTING- HOUSE ELECTRIC CORP 17 June 1974 [22 June 1973] 26658/74 Heading C3B A method of making a flexible, non-tacky prepreg containing uncured resin and for bonding coils in high voltage devices comprises preparing a substantially unreacted solvent mixture consisting essentially of a predetermined quantity of an unreacted epoxy resin having an epoxy equivalent weight of from 360 to 400 and a predetermined quantity of at least one sterically hindered anhydride which is substantially unreactive with the epoxy resin at ambient temperatures and is capable of providing a partial cure of the epoxy resin at a temperature of from 80 to 115 C., the solvent mixture having a solid content of from 35 to 60% by weight, and impregnating a fibrous mat with the mixture and removing solvent therefrom to provide a mat containing a substantially unreacted mixture of the resin and anhydride, the mixture comprising 25 to 400% by weight of the fibrous mat material. The epoxy resin may be a bis-phenol-A epoxy, a cycloaliphatic epoxy or an epoxy novolac, preferably having a viscosity of 1 x 10<SP>6</SP> to 6 x 10<SP>6</SP> cps. at 50 C. The anhydride is preferably a combination of 1-methyltetrahydro- and hexahydro-phthalic anhydride; alternatively, 1-methyl hexahydrophthalic anhydride, 2,5 - dimethyltetrahydrophthalic anhydride, tetrahydrophthalic anhydride or Nadic (Registered Trade Mark) methyl anhydride may be used either singly or in combination. Methyl ethyl ketone and toluene are specified solvents and the fibrous material may be a porous glass fibre mat, a glass fibre cloth, asbestos paper, an asbestos fibre mat or a felt of polyethylene terephthalate fibres. The rate of cure of the resin may be accelerated by the addition of a non-halide phosphonium salt, e.g. methyl trioctyl phosphonium-dimethylphosphate, methyltributyl phosphonium - dimethylphosphate and tetrabutylphosphonium acetate. The use of the pre-preg in a high voltage electrical coil device is described (see Specification 1,475,592).
Patent GB-411345-A (GB)
Title: Improvements in and relating to methods for the piercing of holes and the making of other markings to form designs on the surface of leather skins and the like
IPC: C14B1/56
Filed: 1933-09-28
Abstract: 411,345. Punching designs on leather. CROWTHER, J., 68, Westfield Road, Yeovil, Somerset. Sept. 28, 1933, No. 26664. [Class 31 (ii).] Apparatus for punching or marking designs on leather and like material comprises a roller A, fitted with a detachable sleeve having holes in which punches are detachably secured, such as by caulking with copper, coacting with another roller or rollers B, C having a plain surface. The pressure on the leather G as it passes between the rollers may be adjusted by screws and nuts H.
Patent GB-1476012-A (GB)
Title: Packaging for articles
IPC: B65D81/113
Filed: 1975-06-24
Abstract: 1476012 Polystyrene packing FRANKE & HEIDECKE GmbH [trading as ROLLEIWERKE FRANKE & HEIDECKE] 24 June 1975 [28 Nov 1974] 26731/75 Headings B8C and B8P A six-sided foamed polystyrene packing body composed of two shell halves 2, 3 which together define an internal article cavity has the corners thereof extending outwardly from the sides to form impact receiving "noses". The edges 6 which extend perpendicularly to the separation plane 4 between the shell halves are cut away adjacent the separation plane 4 to render the noses more springy. The opposed surfaces 7 of the cut-away portion may form an acute or obtuse angle with each. The body may be inserted in a carton with the noses engaging the inside corners thereof.
Patent GB-1219993-A (GB)
Title: Clothes washing machines
IPC: D06F37/42
Filed: 1969-05-27
Abstract: 1,219,993. Machinery safety devices. WESTINGHOUSE ELECTRIC CORP. 27 May, 1969 [6 June, 1968], No. 26735/69. Heading F2J. In a clothes washing machine comprising a cabinet having a door 13, and, disposed within the cabinet, a clothes basket accessible when the door is in an open position, drive means for the rotatable structure, a timer manually settable to condition the drive means for rotating the rotatable structure, switch means 19 responsive to closing and opening of the door for automatically enabling and disabling respectively, the drive means, the switch means being rendered accessible upon opening of the door, an interlock means is provided and is rendered effective, when the drive means is conditioned for rotating the clothes basket, to lock the switch means 19 against manual operation while the door is in its open position. A catch member 34 is secured to the underside of door 13 and is adapted to be engaged by a horizontally movable latch bar 36 when the door is closed. The latch bar 36 is of generally Z-shape formation, and is pivotally mounted at 39 on a bracket 38 and urged by a spring 41 to a disengaging position, shown dotted in Fig. 3. The latch bar 36 is moved to an engaging position by energization of a solenoid 43 when a switch 44 is closed by a timer-driven cam 46. On closing the door 13, the catch member 34 depresses a lever 47 which actuates the switch 19, the latch bar 36 being momentarily cammed towards its ineffective position by a surface 49 on catch member 34. An interlock portion 48 is provided on the latch bar 36 and this is positioned to prevent movement of the lever 47 when the door 13 is open.
Patent GB-1501917-A (GB)
Title: Arrangement for firing the thyristors of an inverter
IPC: H02M5/45
Filed: 1975-06-24
Abstract: 1501917 Control of frequency changers LICENTIA PATENT VERWALTUNGS GmbH 24 June 1975 [24 June 1974] 26795/75 Heading H2F A motor 4 is fed from an A.C. supply RST through a frequency changer consisting of a rectifier 1 and an inverter 2 having thyristors whose firing pulses are produced by identical control systems, which comprise control units 11, 12 producing output pulses in response to respective signals from a phase of the supply RST and a shaft position signal generator 4, pulse generators 12, 22 producing block pulses 120 electrical degrees long (for example as in Fig. 2b for generator 12), AND gates 13, 23, OR gates 15, 25 and monostable trigger circuits 16, 26 which respectively produce trains of short pulses as shown in Figs. 2c and 2d (assuming a higher frequency on the motor side), OR gates 17, 27 receiving both short pulse trains, AND gates 14, 24 receiving the combined short pulse train of Fig. 2e and the 120 block pulses from generators 12, 22, and amplifiers 18, 28 to pass the pulses of Fig. 2f to the thyristors, which pulses occur when those of Fig. 2e coincide with the 120 degrees from generators 12, 22. A lower frequency on the motor side (pulse train of Fig. 2g) produces the combined pulse train of Fig. 2h and the firing pulses of Fig. 2i. The interaction of the two firing control systems ensures that a thyristor in one converter 1 or 2 is only fired if current flow is possible in the coresponding thyristor in the other converter
Patent GB-919933-A (GB)
Title: Improvements in or relating to folding seats
IPC: B60N2/30
Filed: 1961-07-25
Abstract: 919,933. Vehicle-seats. FORD MOTOR CO. Ltd. July 25, 1961 [Aug. 26, 1960], No. 26852/61. Classes 52 (2) and 52 (5). One leg 12 of a chair is pivotally mounted in a socket 29 attached to a vehicle floor so that the back 14 and folded-up seat 18 can be turned through a angle to lie flat against the vehicle wall. The seat frame 18 is carried on two pivoted arms 22 and is held in the folded position by engagement of pins 28 with notches 27. Three notches 38, 41 and 43 in floor member 37 are engaged, when the seat is lowered, by pin 39, stud 42 and latch 47, respectively. The latch 47 is closed by tension spring 49 and released by pulling handle 51 forwardly. In another form (Figs. 5-7, not shown) the seat is pivoted in a slot in a forward extension at each side of the back frame, the extension piece on one side being pivotally mounted on the vehicle floor. The back frame and seat are additionally connected by pivoted links.
Patent GB-312883-A (GB)
Title: Means for stringing tennis rackets
IPC: A63B51/14
Filed: 1928-09-19
Abstract: 312,883. Wiener Edelsaitenfabrik Ges. July 17, 1928, [Convention date]. Rackets.-Means for stringing tennis rackets comprise a device for holding the frame of the racket, clamping-apparatus for gripping the string after it has been threaded through the racket and mechanical arrangements for moving the clamping-apparatus in order to stretch the string. The racket 5 is secured upon a rectangular frame 2 by means of clamps 3, 4, Fig. 2. The longitudinal strings which have previously been threaded through the racket are tightened and are secured by clamps 4<1>. The transverse string- ing, knotted at one end, is drawn through the commencing hole near the extremity of the racket but before being interlaced with the longitudinal strings these are displaced alternately upwardly and downwardly by mechanicallyoperated teeth 48 after which the transverse stringing is passed through and is gripped between the rubber-faced corrugations 10<1> of a pair of clamping jaws 6<1>, 7<1> opened and closed by a hand-operated rack and pinion device. A shaft 23 is now rotated by a treadle 25, or by a motor, so as to rotate a screw 20<1> which engages the gripping device 6<1>, 7<1> by means of a divided nut capable of being closed upon the screw by hand-operated rack and pinion mechanism. The gripping device is thus drawn back to stretch the transverse string which is then secured. A similar operation is effected by means of a second gripping device 6, 7 at the other side of the racket, and so on until all the transverse strings are added. The second gripping device may be dispensed with, in which case the racket is turned through 180‹ at each addition of a string. The arrangement of the teeth 48 is shown in Fig. 10. Two shafts 50, 51, one above and the other below the racket 5, are carried by vertical racks 55 on an horizontallysliding frame 46 so that by rotating a handle 39 connected to a pinion 56 the shafts together with the teeth are simultaneously moved towards or away from the racket. The teeth 48 may be adjusted on the shafts 50, 51 to correspond to the spacing of the longitudinal strings 54, and the shafts may be set by hand in either of two positions 180‹ apart to bring the correct set of teeth into engagement with the longitudinal strings.
Patent GB-191794-A (GB)
Title: An improved brilliant advertisement or traffic sign
IPC: G09F13/16
Filed: 1921-10-12
Abstract: 191,794. Johns, A. E., and Gibbon, E. Oct. 12, 1921. Name and number plates.-The design &c. to be exhibited is painted in transparent colours on the back of a sheet of crinkled or embossed glass. Behind this is placed a second sheet of similar glass, the rear side cf which is silvered, or a separate sheet of silvered glass may be placed behind the other two. Reference has been directed by the Comptroller to Specifications 1752/05, 4165/05, 13705/05, 3138/08, and 12950/13.
Patent GB-444578-A (GB)
Title: Improvements in devices for preventing the leakage of fluid past moving rods
IPC: F16J15/28
Filed: 1934-09-19
Abstract: 444,578. Stuffing-boxes. FISHER, D. P., 22, Wigan Street, Wellington, New Zealand. Sept. 19, 1934, No. 26972. Convention date, July 14. [Class 122 (v)] A rod &c. packing comprises an outer split ring 5 having a recess to accommodate an inner split ring 19 and an integral stop pin engaging the split in the inner ring to prevent the slits from coinciding. The rings are mounted in recesses in or between plates 1, 2 held together by bolts 7.
Patent GB-979863-A (GB)
Title: Reinforced resin compositions containing siliceous fibrous materials treated with polymer sizes
Inventor: VANDERBILT BYRON MICHAEL
IPC: C03C25/27
Filed: 1963-07-08
Abstract: Siliceous fibres, e.g. glass, rock wool and fused quartz fibres which are to be used for reinforcing thermo setting resin compositions are treated with a polymeric size comprising an aqueous dispersion or organic solvent solution of a homopolymer of a C4-C7 isoolefin or a copolymer of at least 70% by weight of a C4-C7 isoolefin with up to 30% by weight of a C4-C10 conjugated diolefin, the polymeric size removed by pyrolysis and the fibres then impregnated with the resinifiable thermo setting composition.  The isoolefin may be isobutylene or 2-methyl-1-butene and the diolefin may be isoprene, butadiene or piperylene.  Aqueous dispersions may contain 1-3% of the polymer together with a nonionic emulsifier e.g. a polyoxy ethylated octyl or nonyl phenol containing 8-10 ethylene oxide units and organic solvent solutions may comprise 1-3% by weight of the polymer dissolved in hexane, heptane, an ester, an ether or mixtures thereof. The size may be applied to the fibres as they are being formed and the fibres then dried at 60 DEG -300 DEG F. for 1 minute to 10 hours. After fabrication of the fibres into rovings, cloth or matting the size maybe removed by heating to 500 DEG -900 DEG F. for 5 seconds to 2 minutes.  The size composition may also contain a silanol having the formula <FORM:0979863/D1-D2/1> in which X is avinyl, crotyl, allyl or cyclo hexenyl radical and A and B are hydroxyl, chloro, bromo, methoxy, ethoxy, propoxy, methyl, ethyl or propyl groups. Alternatively X may be the group Y-X- in which X is an alkyl radical and Y is an amino, mercapto, hydroxyl, cyano, carboxy, epoxy, quinoyl, oxime or sulpho group. The silanol is not removed from the fibres by the pyrolysis. Alternatively the silanol may be incorporated into the resinifiable thermosetting composition applied subsequently.  The thermosetting resin may be a polydiolefin polyester, epoxy, silicone phenol or melamine resin, preferred polymers comprising the drying oils obtained by polymerizing conjugated diolefins having 4-6 carbon atoms with a cross linking agent e.g. styrene, using an organic peroxide as catalyst.  The resinifiable thermosetting composition, e.g. a polydiolefin may contain crosslinking agents, e.g. styrene, vinyl toluene, halostyrenes vinyl naphthalenes, alkyl acrylates and methacrylates and allyl esters and catalysts, e.g. dicumyl peroxide and/or ditert. butyl peroxide.
Patent GB-1462388-A (GB)
Title: Apparatus for printing on two surfaces of a radiation-sensitive material
IPC: H01L21/30
Filed: 1974-06-18
Abstract: 1462388 Mask alignment CANON KK 18 June 1974 [18 June 1973] 27133/74 Heading G2A In the printing on both sides of a photo-sensitive wafer using upper and lower printing systems and respective masks 4 and 4', the masks are aligned by temporarily forming an image of the second mask in the same plane as the first mask or an image thereof. As shown, in projection apparatus comprising light sources 1 and 1', mirrors 2 and 2', condenser lenses 3 and 3', masks 4 and 4' and projector lens systems 5 and 5', the photo-sensitive wafer (W), Fig. 1 (not shown), is temporarily replaced by a glass sheet dummy wafer 6 having a half-silvered upper or lower surface, wafer 6 being of such a nature that an image of mask 4' is produced in the same plane as that of mask 4, on the upper surface of wafer 6, and the images are inspected by means of a half-silvered mirror 7 and microscope 8. Alternatively, wafer 6 is unsilvered and a separate half-silvered surface is provided. An image of mask 4' is also formed on the upper surface of mask 4, which surface may be inspected by placing mirror 7 and microscope 8 between lens 3 and mask 4. In this case, wafer 6 may be placed between projector lens 5 and mask 4. In other embodiments, in which a dummy wafer 6 is not employed, (a) the lower printing system including mask 4', is moved a distance equal to the thickness of wafer W, (b) the lower projection system is temporarily replaced by another system, and (c) the lower projection system is temporarily supplemented by a focal point variable lens. The upper printing system may be a contact instead of a projection printing system.
Patent GB-994320-A (GB)
Title: Improvements in or relating to hydrofoils for watercraft
Inventor: WENNAGEL GLENFORD JOSEPH
IPC: B63B1/28
Filed: 1962-07-14
Abstract: 994,320. Hydrofoils. GRUMMAN AIRCRAFT ENGINEERING CORPORATION. July 14, 1962, No. 27149/62. Heading B7A. A hydrofoil comprises a main body 13 having a concave bottom surface and a sharp leading edge, and a leading edge flap 15 pivoted to the upper surface thereof and adapted to be extended to induce cavity flow around the hydrofoil. A further flap 16 is pivoted to the lower rear portion of the body 13 and adapted to be extended to vary the lift of the hydrofoil. A lift control surface 14 is pivoted to the rear of the body about 17 so that it may be extended to vary the lift retracted to within the cavity or lowered to a position below the body 13 by rotation of the member 18 about 19.
Patent GB-1208575-A (GB)
Title: Methods of manufacturing semiconductor devices
IPC: H01L27/06
Filed: 1967-10-02
Abstract: 1,208,575. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 2 Oct., 1967 [5 Oct., 1966], No. 27238/70. Divided out of 1,208,574. Heading H1K. The subject-matter of this Specification is substantially the same as that described in Specifications 1,208,574 and 1,208,577, but the claims are concerned with the provision of metal layers extending over the sunken grown oxide layer on the silicon body to effect electrical connection to the exposed surface parts of that silicon body.
Patent GB-272924-A (GB)
Abstract: 272,924. I. G. Farbenindustrie Akt.- Ges. June 15, 1926, [Convention date]. Samples furnished. Anthraquinonehydroazines. - Anthrahydroquinone-9:10-disulphuric esters containing an amino-group, mono-substituted or not, in the #-position, with or without other nuclear substituents, provided that the alpha-position ortho to the amino group is free, are treated with alkaline oxidizing agents; the products dye wool from an acid bath and when further treated with acid oxidizing agents yield anthraquinoneazines which are free from the sulphuric residues and are vat dyestuffs. According to examples, the disodium salt of 2-aminoanthrahydroguinone-9 10-disulphuric ester (obtainable by reducing 2- acetylaminoanthraquinone to the leuco-compound, treating the latter with chlorsulphonic acid in the presence of pyridine. and saponifying to remove the acetyl group) is oxidized with caustic soda-alkaline permanganate, acidified and filtered; the product dyes wool in violet-red shades and by heating with sodium nitrite solution yields an insoluble product which dyes cotton from the vat in blue shades. The Specification, as open to inspection under Sect. 91 (3) (a), comprises also the use as parent materials of anthrahydroquinone-9- : 10-disulphuric esters containing more than one amino or mono-substituted amino group in #-position. This subject-matter does not appear in the Speci. fication as accepted.
Patent GB-930047-A (GB)
Title: Improvements in or relating to alloy steels
Inventor: HARRIS GEOFFREY THOMAS
IPC: C22C38/30
Filed: 1958-08-27
Abstract: Non-austenitic chromium steels for use at elevated temperatures contain in percentage by weight:-  .C.............0.01- 0.2 .Ni.............0 - 4 .Cr.............9 -15 .Co.............3 -15 .W and/or Mo.........0 - 2 .Nb and/or Ta.........1 - 3  (and must exceed the W/Mo content) .V.............0 - 3 .B.............0 - 0.05 .N2.............0 - 0.1 .Al.............0 - 0.1 .Zr.............0 - 0.2 when no N2 is intentionally added .Fe and impurities.........balance  De-oxidizers, e.g. Mn 0.1-2% and Si 0.1-1% may be present The alloy is solution treated in the range 1000-1250 DEG  C. and tempered in the range 550-750 DEG  C. Specifications 638,110, 658,115, 730,272, 733,146 and 796,733 are referred to.
Patent GB-463656-A (GB)
Title: Milling machines and similar machine-tools such as employ slip gears in the drive to the spindle
IPC: B23Q5/14
Filed: 1935-10-04
Abstract: 463,656. Milling-machines. HERBERT, SIR A., and LLOYD, A. H. Oct. 4, 1935, No. 27434. [Class 83 (iii)] In a milling or similar machine-tool having pick-off gears in the main drive and in the feed drive, disposed in a compartment behind the same cover, the drive to the pick-off gears is taken from a driving pulley 11 arranged on one side of the compartment removed from the cover (cover removed in the Figure). The pick-off gears 14 for the main drive are arranged at right angles to those 20 for the feed drive and removal of the cover for the compartment actuates a switch for the contactor winding of the driving motor. An electric lamp inside the compartment may also be automatically switched on when the cover is removed.
Patent GB-870203-A (GB)
Title: Improvements in or relating to surface moderated propellent powders
IPC: C06B21/00
Filed: 1949-10-26
Abstract: 870,203. Surface treating propellent powders. WHITWORTH E., and IMPERIAL CHEMICAL INDUSTRIES Ltd. Oct. 26, 1950 [Oct. 26, 1949], No. 27498/49.. Class 9(2). The surface of a smokeless propellant powder containing nitrocellulose colloided with a liquid explosive ester e.g. nitroglycerine or diethylene glycol dinitrate, and nitroguanidine is treated with symmetrical diethyl diphenyl urea. The diethyl diphenyl urea may be applied in the undiluted form, as a solution or an emulsion. Dimethyl or diethyl-diphenyl urea may be homogeneously distributed in the powder to be treated. Specification 621,699 is referred to.
Patent GB-1158767-A (GB)
Title: Snap on Brace for Louver Blades
Inventor: MINDS GEORGE W JR
IPC: E06B7/082
Filed: 1967-06-16
Abstract: 1,158,767. Ventilators. G. W. MINDS. 16 June, 1967 [24 Oct., 1966], No. 27803/67. Heading F4V. A louvre ventilator comprises a plurality of louvre blades 14 fixed between vertical jambs, each blade being supported intermediate its ends by one or more snap-on braces 15, each of which includes a vertical leg 22 having a flange arrangement at its upper end to receive an outturned flange 20 of a blade 14 and a leg 23 having an upturned flange 31 to engage a continuous rib 29, as shown, or a downturned tab (32, Fig. 3), on the blade 14. Each blade is made from extruded aluminium or sheet metal.
Patent GB-702802-A (GB)
Title: Improvements in or relating to circuit arrangements for operating cathode ray tubes
IPC: H04N3/20
Filed: 1951-11-27
Abstract: 702,802. Television. GENERAL ELECTRIC CO., Ltd., and FELTHAM, A. R. Nov. 26, 1952 [Nov. 27, 1951], No. 27810/51. Drawings to Specification. Class 40 (3). [Also in Group XXXV] The high tension supply for the anode of a cathode-ray tube of a television receiver is produced by rectifying over a thermionic rectifier the pulses produced in an inductance during the flyback period of a saw tooth waveform, the anode of the rectifier being supplied from the line time base scanning circuit whilst the cathode heater is supplied from the frame time base scanning circuit.