baber/WOPTO huggingface dataset:
Patent GB-996554-A (GB)
Title: Improved laminates
Inventor: ROBERTS GEOFFREY ARTHUR HAMMON
IPC: B32B15/08
Filed: 1963-03-13
Abstract: 996,554. Laminates. ESSO RESEARCH & ENGINEERING CO. Feb. 13, 1964 [March 13, 1963], No. 10044/63. Heading B5N. [Also in Division H1] A flexible laminate, suitable for forming printed circuits or condensers, comprises a flexible metal sheet and a polyethylene lamella bonded thereto with a copolymer of 1, 3- butadiene, styrene and divinyl benzene. The polyethylene lamella may be formed from one or more sheets of polyethylene film coated with a solution of the co-polymer, or may be formed from one or more layers of polyethylene cloth impregnated with copolymer solution. The co-polymer may be used as a 60% weight solution in an inert solvent such as benzene, toluene, xylene, cyclohexane, petroleum naphtha and white spirit, which may include a curing catalyst. The polyethylene lamella together with the metal sheet may be laid on a release agent such as a polyester film, and submitted to heat and pressure to cure. A flexible backing e.g. a further flexible metal sheet or other flexible material which is non-absorbent to the resin solution before curing may be provided.
Patent GB-453924-A (GB)
Title: Improvements relating to formwork for concrete construction
IPC: E04G11/28
Filed: 1935-04-01
Abstract: 453,924. Casting walls in situ. DYKE, H. G., 14, Langham Place, London. April 1, 1935, No. 10088. [Class 20 (ii)] The outer shuttering for casting concrete walls in situ is supported by means of cantilevers from sectional uprights disposed inside the walls, so that the pressure of the concrete on the shuttering is transmitted to these uprights. The uprights disposed within the walls are formed of two channel-section members 1 disposed back to back and formed in lengths joined by fishplates 2, the uprights being supported in apertures 3 in the floors by cross keys 5 and inclined struts 6, the lower lengths being removed for re-use as the building proceeds. The uprights are interconnected by inclined bars 29 and carry the internal shuttering 18. The external shuttering 24 is supported by walings 15 carried by uprights 14 which in turn are supported by double triangular cantilever frames 8, 19, 31, secured to the uprights 1 at spaced points 22, 23. The cantilever frames are connected lengthwise of the wall by bars 32, 34, Fig. 2, and the walings 15 are interconnected and stiffened at their ends by triangular truss frames 26 and also by inclined bolts 35. The cantilever frames are raised after each casting operation by means of tackles 9 carried by horizontals 12 from the inner uprights, the suspension being so arranged that when the cantilevers are disconnected from the uprights, the shuttering swings free of the cast wall. Permanent precast facing material 16 may be supported by the outer shuttering supports. Specification 432,202 is referred to.
Patent GB-495941-A (GB)
Title: Self-inductance devices
IPC: H01F17/04
Filed: 1938-04-01
Abstract: 495,941. Transformers and inductances. LORENZ AKT.-GES., C. April 1, 1938, No. 10089. Convention date, April 3, 1937. [Class 38 (ii)] An inductance comprising a winding 2, Fig. 1, and H.F. iron core 3, 4, 14 is mounted in an insulating casing 1 and held in position by a screwed cap 6 which forms a support for an adjustable element 5 of the core to enable the inductance to be varied. In a modification shown in Fig. 3 a coupling winding 13 is inductively associated with the coil 2 and mounted in a base member 12. To avoid capacitative de-tuning of this coil a core disc 3<1> is located below the coil.
Patent GB-1173626-A (GB)
Title: Insulation for Slot Wedges of Electric Machines.
IPC: H02K3/487
Filed: 1967-03-03
Abstract: 1,173,626. Insulation in dynamo-electric machines. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. 3 March, 1967 [7 March, 1966], No. 10209/67. Heading H2A. Laminated ferromagnetic slot wedges 1 for an electrical machine are insulated by a woven sheath 2 of insulating material which is slid over the wedge and tensioned longitudinally before being impregnated with plastics material. The sheath preferably consists of woven glass-silk material and is impregnated with epoxy resin and no mould is used in the construction. Non-magnetic end pieces 3 are used to hold the laminations of the wedge together during manufacture.
Patent GB-200226-A (GB)
Title: Improvements in or relating to buckets or scoops for loading loose materials
IPC: E02F3/60
Filed: 1922-04-12
Abstract: 200,226. Winder, R. April 12, 1922. Skips; tip-buckets.- A bucket or scoop for loading loose materials such as ore, sand, coal &c. into vehicles, barges, &c., comprises a body 1 of steel plates with the open mouth reinforced by steel strips 3 and formed with a sharp edge 2, two rollers 5 being journaled on threaded pins 7 at the rear of the bucket. The bucket is forced forward into the heap mechanically or by hand, and is lifted by a crane by means of an eye-bolt 15 on a bail 8. When suspended, the bucket hangs with the edge 3 horizontal. Relative movement of the handle and the bucket is limited by stops 21 on the edge 3, and by lugs 18 on the eyebolt 15 which may rest on an abutment 20 at the back of the bucket. The bucket may be locked to the bail by a latch not shown.
Patent GB-166668-A (GB)
Title: Improvements in and relating to limit gauges
IPC: G01B5/08
Filed: 1920-04-15
Abstract: 166,668. Thomson, H. J. April 15, 1920. Linear-dimension gauges.-Comprises a limit gauge formed of a single rod, the end portions of which are cylindrical or spherical, the length of the rod being equal to the low limit while the high limit is given by the amount of " wobble " or swing about one end. The nominal length together with the " wobbles " or bores for various high limits are marked on the gauge which is used similarly to the well-known point gauges. In Fig. 2, the " wobble " is represented by the distance B.A.C. which is approximately equal to B.C. The diameter of the spherical ends or the thickness of the cylindrical ends perpendicular to the axis of the cylinder being known, a definite law can be obtained between the " wobble " and the " tolerance."
Patent GB-1506827-A (GB)
Title: Gas and/or vapour discharge lamp
IPC: H01J61/54
Filed: 1976-03-16
Abstract: 1506827 Discharge lamps PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 March 1976 [19 March 1975] 10497/76 Heading H1D A discharge lamp has a heat shield which is external to but adjacent the outer surface of the discharge tube in the cold non-started state of the lamp, but is moved with respect to the discharge tube, when the temperature of the latter varies, by a bimetal element which is within the lamp and is mechanically coupled to the heat shield, whereby, on starting, the lamp quickly attains its operating temperature, and thereafter has its temperature regulated. In Fig. 3, the discharge tube 10 of a high pressure, sodium vapour, double envelope lamp has a pair of semi-circular heat shields 14 and 15 disposed in the double envelope and supported by bimetal elements 12 and 13 attached to the electrode feed-through conductor bush 11, such that, when cold, the shields are clamped around and substantially enclose the discharge tube (Fig. 2, not shown). In further embodiments, the bimetal elements 12 and 13 may be attached instead to a pair of rods which support the discharge tube within the outer envelope (Figs. 6 and 7, not shown), or a single cylindrical shield may be moved axially over the end portion of the discharge tube (Figs. 4 and 5, not shown). The shields may be of tantalum.
Patent GB-527774-A (GB)
Title: Improvements in or relating to the hardening of steel articles
IPC: C23C8/46
Filed: 1939-04-04
Abstract: 527,774. Hardening steel articles. BRADLEY, H., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 4, 1939, No. 10534. [Class 72] High carbon steel articles are hardened by immersing them in a fused salt bath, maintained at a temperature of 750 - 850‹C. and consisting of 1 - 10 per cent. by weight of alkali cyanide, 60-75 of an alkali metal carbonate, the remainder being one or more alkali metal chorides and/or alkaline earth chlorides, until they attain the temperature of the bath and then quenching them, e.g., in sodium cyanide, brine, or solutions of caustic soda, sodium carbonate and potassium carbonate. In an example the bath consists of 5 per cent. of sodium cyanide, 67 of sodium carbonate, 7 of sodium chloride, 7 of potassium chloride and 14 of barium chloride. During use, the composition of the bath is maintained by the addition of such an amount of a mixture of the chloride and the cyanide that the original volume of the bath is restored.
Patent GB-1135493-A (GB)
Title: Target assembly for television pickup tubes of the vidicon type
IPC: H01J29/45
Filed: 1966-03-10
Abstract: 1,135,493. Television pick-up tubes; photoconductive targets. WESTINGHOUSE ELECTRIC CORP. 10 March, 1966 [29 March, 1965], No. 10535/66. Headings H1D and H1K. A vidicon target comprises a transparent insulating film having a low dielectric constant deposited on a transparent conductive film and a double layer of photo-conductive material on the insulating film. A first deposited photoconductive coating comprises As 2 Se 3 , CdSe mixed with As 2 Se 3 , CdS mixed with As 2 Se 3 , or As 2 Se 2 S and has a thickness of about 0À2 to 0À3 microns to provide a porous layer having a density less than 10% of its normal bulk density. A second deposited photo-conductive coating comprises one of the above materials and is formed as a solid layer at approximately its normal bulk density, having a thickness of about 2 to 3 microns. The insulating layer may comprise cryolite (Na 3 AlF 6 ) having a dielectric constant of about 1À36 and has a thickness of 100 to 1500 angstroms. The conductive film, e.g. a tin compound or gold, is heated to a temperature of 100 to 250‹ C. and the cryolite evaporated on in a vacuum of about 10<SP>-6</SP> torr. The photo-conductive layers are then successively evaporated on, the first layer in an atmosphere of argon at a pressure of about 100 microns and the second layer in a vacuum of about 10<SP>-5</SP> torr.
Patent GB-105631-A (GB)
IPC: F21V15/04
Abstract: 105,631. Austin, N. J., and Taylor, G. E. April 25, 1916. Anti-vibration devices.-In an electric lantern, electric torch, or similar hand lamp for use in air-craft sheds or for other purposes, the lamp or lantern with its attachments is resiliently supported by a helical spring or springs in a light resilient cage without projecting parts. A hollow handle c is secured to one end of the cage by bolts passing through an end ring b and a vulcanite or similar ring b<1>. The lamp bulb, the usual globe j, and the wire guard k are carried by a helical spring e secured by U-bolts f to the ring b<1>. In a modification, the enclosure for the electric lamp bulb comprises a parabolic reflector o, Fig. 2, fitted with a glass p, and is supported from the top ring by four light helical springs e<1> and from the middle ring by another set of springs e<2> secured to the rings and to flanges o<1>, o<2> on the reflector by bolts r and screws r<1> having split pins engaging between coils of the springs.
Patent GB-242529-A (GB)
Title: Improvements in tooth-brushes and nail-brushes
IPC: A46B7/10
Filed: 1925-04-23
Abstract: 242,529. Lazarus, S. A. April 23, 1925. Handles with recessed-back retaining-devices for brushes. -A tooth or nail brush, of the kind in which the bristles are helically secured to an axial support e carried in bearings so that the bristlemember can rotate in use. has one or both of the bearings movable so that pressure can be applied to the bristlemember, if desired, to prevent it from rotating. The movable bearing also permits the bristle-member to be removed or attached without springing the axial support e. The bearing g slides in a. dove-tail groove i and carries a screw j 'on which a nut k, projecting from both sides of a slot extending through the handle, can be rotated by the finger and thumb. Specifications 218,095 and 239,593 are referred to.
Patent GB-753056-A (GB)
Title: Improvements in collapsible metal panels forming a rigid surface when spread
IPC: B63B19/21
Filed: 1954-04-12
Abstract: 753,056. Hatch covers; gangways. CAILLET, R. April 12, 1954, No. 10737/54. Class 113 [Also in Groups X and XXX] In a collapsible metal panel for a gangway or a ship's hatch cover, consisting of rectilinear hingedly interconnected elements 1, 2, 3, 4, 5, each comprising at least one main wall coplanar with the surface formed by the panel in its spread condition and a reinforcing wall along one longitudinal edge of the element and forming an angle with the main wall, the dimensions of the elements are such that the panel may be wound spiralwise, each clement fitting over and substantially enclosing a predetermined previously wound element. In the embodiment shown in Fig. 1, each element has a main wall 6 (Fig. 5) with reinforcing walls 7 and 8 at right angles thereto, and is connected to the next by hinges 10. The first element 1 is connected by a link 12 to a drum 11, on the four sides of which the elements may be wound in succession as shown in Fig. 2. In other embodiments the reinforcing walls are at less than 90 degrees to the main wall, the winding drum being polygonal. One reinforcing wall may be omitted and/or the panel may be modified to be wound in the opposite direction. To obtain fluid tightness between elements, adjacent walls 7, 8<SP>1</SP> may have a flexible membrane 15 secured thereto. Water-tightness between the lateral edges of the panel and a hatch coaming 20 is obtained as shown in Fig. 4 by means of a flexible membrane 16 which is secured to an element and has its free edge secured to a member 17 adjustable by means of bolts 18 through notches on bars 19 welded to the coaming, a hinged member 21 being movable by screw jacks 22 to stretch the membrane in its joint-closing position.
Patent GB-1400974-A (GB)
Title: Gearbox
IPC: F16H3/66
Filed: 1973-03-06
Abstract: 1400974 Variable speed gearing V BEGAT 6 March 1973 [6 March 1972] 10753/73 Heading F2D A gear mechanism providing reduced and direct forward ratios and a reduced reverse ratio comprises an input shaft 1 connected to a casing 4 which has hydraulic clutches 5, 7 and 6, 8 and/or friction clutches 21, 27 whereby the input shaft may be connected to either of annular gears 19, 25 fastened to driven clutch elements 20, 26, an output shaft 2 having a splined connection 9 with a sun wheel 10, a planetary pinion 16 meshing with the sun wheel and connected by a pinion 18 with the annular gear 19, a planetary pinion (not shown) also meshing with the sun wheel and connected by a pinion 23 and a reversing pinion 24 with the annular gear 25, and a planet carrier 12 connected by a tubular shaft 11 to a gear 14 which may be locked by a releasable stop 15. Reduced forward ratio is obtained by locking the carrier 12 and supplying fluid to the clutch 5, 7 so that the annular gear 19 is driven by the input shaft and drives the sun wheel through the pinions 18, 16. Direct forward ratio is obtained by releasing the carrier 12 and supplying fluid to both clutches 5, 7 and 6, 8 so that both annular gears 19, 25 drive the carrier and sun wheel at the speed of the input shaft. Reverse ratio is effective when the carrier is locked and the clutch 6, 8 is supplied with fluid so that the annular gear 25 drives the sun wheel through the pinions 24, 23 and the planetary pinion (not shown) connected to the pinion 23. For lightduty operation the friction clutches 21, 27 need not be used, but for heavy duty they are both engaged for direct drive to augment the hydraulic clutches and uses only friction clutches.
Patent GB-602344-A (GB)
Title: Improvements relating to electrical transmission and control systems, remote indicating systems and improved indicators
IPC: G08C19/48
Filed: 1945-04-30
Abstract: 602,344. Telemetering systems. SPERRY GYROSCOPE CO., Inc. April 30, 1945, No. 10857. Convention date, April 29, 1944. [Class 40 (i)] [Also in Group XIX] In a Selsyn or equivalent system for remote indication of the movements of an instrument such as a compass 11 and wherein the transmitter and receiver rotors 13, 64 are energized from a common single phase supply, transmission errors are measured according to the voltages produced by a second Selsyn receiver 71 with its rotor 81 mechanically coupled to that of the first and its stator coupled electrically to the distant transmitter. As shown, these voltages are applied across the grids and cathodes 88, 89 and 93, 94 of a double triode 85 having its anodes connected to supply source 16 and in parallel with resistances 95, 96, which are, in mutual junction point connection with individual cathode resistances 91, 92. Under these conditions a unidirectional voltage appears across one or the other of the cathode resistances 91, 92 possessing a polarity and value consistent with the phase and amplitude of the voltage induced in the rotor winding of the second Selsyn receiver 71. This unidirectional voltage is applied to a suitably calibrated centre-zero voltmeter 101 which may be incorporated in an angular motion indicator, Figs. 2 and 3 (not shown), for operation through gear 66 and of the type described in Specification 419,002 so as to provide by means of pointer 103 of voltmeter 101 a reference index which moves according to the transmission error and co-operates with the scale of the above-mentioned indicator whereby the scale reading against the pointer 103 is an exact measure of the movement of the compass 11. The two receivers 54, 71, double triode 85, and associated circuit details comprise elements of a repeater indicator 28 which also includes a balanced amplifier circuit wherein a double triode 29 amplifies the transmitter line to line voltages so that these amplified voltages applied to receiver windings 53 effect the power increase required in the receiver to reduce the error due to friction therein and that due to reactive torque in the transmitter.
Patent GB-529037-A (GB)
Title: Improvements in or relating to plate heat exchangers suitable for heating air
IPC: F28F3/02
Filed: 1939-04-11
Abstract: 529,037. Plate heat-exchangers. WATKINSON, E. April 11, 1939, No. 10970. [Class 64 (iii)] A furnace air-heater is built up from component plates provided on either side with heat transmission needles or ribs. The top and bottom edges of the plates 6 may be formed with flanges 8 which are secured by bolts, and needles 7 are provided on both sides of the plates. At one end, each plate is formed with a groove 9<1> to receive the opposite end of the next plate. The long cross-sectional dimension of each needle is arranged to face the stream of air or gas ; the proportion and spacing may be as described in Specification 394,324. In a modification, the plates are used in a framework built up from flanged members such as angle iron.
Patent GB-412014-A (GB)
Title: Improvements in or relating to the bleaching of textile materials
IPC: D06L4/27
Filed: 1933-04-12
Abstract: Cellulosic textile materials, e.g. cotton or rayon, are bleached by subjecting them to the action of an aqueous solution of succinchlorimide of a concentration of \ba1/2\be per cent up to saturation, with or without an addition of acid or alkali.  Thus, cotton cloth may be treated with a 3 per cent aqueous solution of the chlorimide at 50--80 DEG  C. for \ba1/4\be--1 hour with an addition of 0,4 grams of sodium carbonate per gram of the chlorimide.
Patent GB-1381563-A (GB)
Title: Control system
IPC: B25J9/10
Filed: 1973-03-07
Abstract: 1381563 Automatic control of position TOKYO SHIBAURA ELECTRIC CO Ltd 7 March 1973 [16 March 1972] 11092/73 Heading G3N A control system for controlling the position of two members, the position of a first member affecting the position of the second, incorporates a computing means generating a feedback signal from first and second member actual position signals which is used to modify the second member positioning. As shown, a command device 31 generates signals Sa, Sh for rotating an arm 13 and a hand 15, of a manipulator, abut horizontal axes. The arm 13 is retroactively positioned by an electro-hydraulic servo 33 responsive to the comparison, in comparator 32, of the command signal and a feedback signal Fa from a binary encoder 34. The position of the hand 15 is similarly controlled by a servo 36 responsive to the comparison, in a comparator 35, of the command signal and the sum Fh of a feedback signal from an encoder 37 and the signal from the encoder 34 as modified by a factor M dependent on the relationship between the resolutions of the encoder, by a device 38. Two forms of the device 38 are disclosed one of which uses digital logic whereas the other employs an operational amplifier for use in a modified system employing analogue position transducers 34,37.  The signals Fa and Fh on lines 39A, 40A can be stored in memories 39, 40 of the command device 31.
Patent GB-126623-A (GB)
Title: Improvements in or relating to the Manufacture of Wood Substitutes.
IPC: C04B28/32
Filed: 1919-05-05
Abstract: 126,623. Soc. Convert - Villejean LecorchÚ et Cie. May 2, 1914, [Convention date]. Plastic compositions containing fibres and oxychlorides.-A composition consisting of wood, sawdust, waste wood, cork, peat, turf, or the like and a mixture of calcined magnesia and magnesium chloride is subjected in moulds to the combined action of pressure and heat The Fig. shows a suitable form of plant. Hot gases from a furnace g pass into a chamber c which surrounds the moulds en the ram a<1> of an hydraulic press. Regulators h<1>, j<1> in the flues h, j enable the gases to be admitted to or cut off from the chamber c. In an example, 100 parts of sawdust are mixed with 40 parts each of calcined magnesia, and magnesium chloride solution (27‹ BÚ). The method of heating is stated to be applicable generally to hydraulic press installations.
Patent GB-556353-A (GB)
Title: Improvements in or connected with positional invalid bedsteads, stretchers, or the like
IPC: A47C20/08
Filed: 1942-08-11
Abstract: 556,353. Litters. WHITFIELDS BEDSTEADS, Ltd., and ADAMS, E. Aug. 11, 1942, No. 11212. [Class 108 (i)] [Also in Groups XIV and XXV] A stretcher having a number of adjustable sections a, b, c, is provided with a hinged stay combined with a latch for retaining an end section in adjusted position and also automatically lock the section when it is brought into a horizontal position. The stay e is hinged to the end section a and passes through a slotted bracket f secured to the frame a<SP>1</SP>. A rotatable red g controlled by a spring j is adapted to enter into one of a series of holes or notches in the stay e and the bracket f is provided with a socket k through which the rod g passes and which has a cross slot in its face adapted to be engaged by the pin l on the rod g when the rod g enters one of the stay holes. Rotation and withdrawal of the rod g prevents the latter engaging the holes since the pin l will then bear against the face of the sockets. At the hinged end of the stay e the latter is thickened by a pin e<SP>1</SP> the leading edge of which is wedge-shaped and is so adapted to force back the rod g when the end section a is approaching the horizontal the rod g being pressed forward again by the spring j when the end of the rod registers with the last hole of the stay so automatically locking the end section a in the horizontal position.