baber/WOPTO huggingface dataset:
Patent GB-647564-A (GB)
Title: Improvements in or relating to rotary-wing parachutes
IPC: B64D19/02
Filed: 1948-03-17
Abstract: 647,564. Rotary-wing parachutes. TUSTANOWSKI, J. March 17, 1948, Nos. 7964 and 16154. [Class 4] A rotary-wing parachute comprises telescopic blades which extend at equal rates when rotated by launching of the parachute, and means interlocking the telescoped blade sections and controlling their extension so that the sections of each blade are projected individually and in a predetermined sequence consistent with minimum rate of increase of polar moment of inertia of the rotor (to maintain maximum rotor speed), and a brake which, without exerting a force tending to retract the blade sections into the telescoped condition, delays their extension so that the blades can only extend in response to increased rotor speed, so that the length of each blade bears a predetermined relation to the rotor speed. As shown in Figs. 4 and 6, the blade sections may be held in the telescoped position by one or more pins 12 or 20, 21, of tapered form, and are released in the proper sequence by shearing of the pin or pins through successive planes as the speed of the rotor increases. Fig. 9 shows an alternative method of locking and releasing the blade sections by pins 41 which, as each section reaches the extended position successively drop into recesses 42 in the upper blade surfaces to release the next section for outward movement. In the arrangement according to Fig. 12 return movement of the extended sections is prevented by spring-loaded stops 64 which are forced outwardly to abut against the ends of the extended sections. Outward movement of the blade sections is controlled by cables 55 attached to the outermost sections and passing around a brake member 100 formed with a tapered circular recess engaged by a corresponding projection 105 of the co-operating member. When the blades are fully extended the cables 55 are released from the member 100, in order that they may rotate freely. Preferably, as shown in Fig. 18, the brake members are arranged so as to exert an increasing resistance as the blades extend, the element 100 being moved axially by reason of its screw-thread engagement with the central member 102. Alternatively, axial movement of the brake members may compress liquid in a hydraulic'system, Fig. 20 (not shown).
Patent GB-207461-A (GB)
Title: Improvements in or relating to glass receptacles
IPC: B65D23/08
Filed: 1923-03-21
Abstract: 207,461. Smith, G. March 21, 1923. Protective devices, external. - An india - rubber protecting device for application to a glass bottle a, or a jar, tumbler, &c., comprises a cup b fitted or sprung over the bottom of the article, a ring c adapted to encircle and grip the body of the article, and strips d connecting the cup and the ring.
Patent GB-550921-A (GB)
Title: Improvements in the production of films composed of derivatives of rubber
IPC: C08C19/12
Filed: 1941-06-28
Abstract: 550,921. Films of rubber derivatives ; coated fabrics. DUNLOP RUBBER CO., Ltd., TWISS, D. F., and JONES, F. A. June 28, 1941, No. 8166. [Class 70] [Also in Group VIII] Rubber films, e.g. formed by calendering or evaporation of a solution or dispersion, or by deposition upon a surface which may constitute a support therefor, are reacted chemically without substantial change of shape, with a halide salt of a metal of valency greater than 2, e.g. stannic chloride, titanium tetrachloride, or aluminium chloride, or with chlorine, thiocyanogen, sulphuryl chloride, or sulphuric acid or a mixture of boron fluoride in glacial acetic acid, the reagents being used as a liquid or in a solution in which the rubber derivative is substantially insoluble e.g. using ethylene dichloride or benzene or water. The films may be of natural or artificial rubber and may be deposited on glass, porcelain, cellulose, paper, or cotton fabric, and the supporting surface may be first covered thinly with a soap e.g. aluminium palmitate applied in benzene, air dried and lightly polished. After treatment with one or more chemical reagents, the rubber may be washed in water, alcohol, &c. and dried with or without stripping from the supporting surface.
Patent GB-640209-A (GB)
Title: Improvements in or relating to electronic distributors
IPC: H01J31/06
Filed: 1948-03-19
Abstract: 640,209. Uniting metals to vitreous materials by heat. GENERAL ELECTRIC CO., Ltd., and HILL, R. T. J. March 19, 1948, No. 8298. [Class 36] [Also in Group XL (a)] In the manufacture of an electronic distributer target, a strip 6 of glass or ceramic is sealed to lengths of metal, preferably copper, wire 5 in an oven. If the strip is of glass, a glass solder is used for sealing, and if of ceramic a ceramic paste solder is used; alternatively a ceramic strip may be moulded in situ, the wire being attached during the moulding operation.
Patent GB-492606-A (GB)
Title: Improvements in and relating to the treatment of materials containing tantalum and/or niobium
IPC: C22B34/24
Filed: 1937-03-22
Abstract: Tantalum and niobium carbides may be extracted from an impure alloy resulting from the treatment of materials containing the metals in presence of slag-forming agents, a metal such as iron or a compound thereof, and free carbon with or without calcium or iron carbide. Specification 458,021 is referred to.ALSO:A process for treating materials containing tantalum or niobium or both comprises the reduction of the material in the presence of slag-forming agents, a metal such as iron or a compound thereof, and of an amount of free carbon sufficient to reduce the impurities including the iron or like compound but insufficient to reduce the tantalum and niobium oxides, so that there is obtained a slag rich in the tantalum and niobium and an alloy containing the impurities, the iron or like metal, and some tantalum and niobium.  The free carbon may be used along with calcium carbide or iron carbide.  The iron or other metal may be present in the original material or added thereto.  The impure alloy obtained may be treated chemically and mechanically to obtain tantalum and niobium carbides free from impurities, and the slag rich in tantalum and niobium may be treated for the production of ferro-alloys of the metals.  Specification 458,021, [Group III], is referred to.
Patent GB-526448-A (GB)
Title: Improvements relating to converting arrangements employing ionic valves devices
IPC: H02M1/00
Filed: 1939-03-16
Abstract: 526,448. Converting. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. March 16; 1939, No. 8426. Convention date, March 19, 1938. Drawings to Specification. [Class 38 (ii)] In a converter employing two groups of gridcontrolled discharge devices in Graetz connection, one group of discharge devices is provided with means for injecting short transitory voltages between the anodes for effecting forced commutation while the other group is subject only to grid-controlled commutation. The invention is described with reference to arrangements for interchanging power between D.C. and A.C. networks and between three-phase A.C. networks of different frequency.
Patent GB-696204-A (GB)
Title: Improvements in or relating to electric wiper switch contact lamps and to multiples therefor
Inventor: RONAYNE JAMES BENEDICT
IPC: H01H63/02
Filed: 1949-03-29
Abstract: 696,204. Automatic exchange switches. STANDARD TELEPHONES & CABLES, Ltd. March 24, 1950 [March 29, 1949], No. 8475/49. Class 40 (iv). A combined contact bank and switch multiple arrangement is formed by printing or similarly depositing tracks 11, Fig. 1, e.g. silver, on an insulating sheet 10, e.g. resin-impregnated paper, the tracks terminating at apertures 13, e.g. rectangular or circular, which when the sheet is folded as shown in Fig. 3 provide access for switch wipers. Before such folding the sheet 10 is slotted between the ends of the tracks 11 which are then bent inwards along the line 15. Alternatively, tracks are printed on both sides of the sheet 10, corresponding tracks being connected, e.g. by riveting, and an extra insulating sheet is inserted in the folds. In an arrangement, Fig. 5, suitable for the line wipers of a group selector, corresponding track terminations 32, 44 are connected to different multiple connections. The corresponding sections 29, 30 are riveted together so that completion of the folding completes the multiple connections. When folded the arrangements are consolidated by heat and pressure. Specifications 651,785, 696,203 and 696,205 are referred to.
Patent GB-570553-A (GB)
Title: Improvements in or relating to photoelectric cells
IPC: H01J40/04
Filed: 1941-07-05
Abstract: 570,553. Photo electric cells. CINEMA - TELEVISION, Ltd., TOMES, G. A. R., and BLACKMAN, W. July 5, 1941, No. 8506. [Class 39 (i)] In photo-electric cells, the photo-sensitive cathode 7, Fig. 1, is deposited on one or both sides of a cylindrical support 5 open at both ends, or on the wall of a cylindrical envelope, so that it can be irradiated with light from one or both ends. The support may be of conical, spherical or ellipsoidal shape. As shown in the drawing, the support 5 is mounted on wires from the pinch, one of which may form the cathode lead, and is additionally supported by springs 21 bearing on the wall of the envelope. The photo-sensitive material is deposited from a pellet within the heating helix 3, partially surrounded by a cup 4 which also acts as the anode. During the sensitizing operation, the part of the envelope which forms the window, is protected by a shield 8, subsequently displaced to the position shown where it is held by a wire 9 sealed into the end of the envelope. In another arrangement in which the photosensitive material is deposited on the wall of the envelope, a shield is provided between the helix and the pinch, the cup in this case being omitted. The photo-sensitive surface may comprise two or more coaxial cylindrical supporting members.
Patent GB-236289-A (GB)
Title: Improvements in and relating to electric discharge devices for vacuum tubes
IPC: H05B41/24
Filed: 1924-04-04
Abstract: 236,289. Gratze E. V. Hayes-. April 4, 1924. Supplying consuming devices.-In order that no discharge or leakage shall be obtainable from either electrode or from the tube itself, both terminals a<1>, a<2>, Fig. 1, of a vacuum tube a lit by a discharge of 5000 periods per secor.d or more are connected to the terminals of the secondary winding b of. an oscillator. The primary winding c is connected, in series with a condenser d, to a source of pulsating, oscillating, or intermittent unidirectional current. Two oscillators may be employed with their secondary windings in series or in parallel. The secondary winding b may be arranged inside the vacuum tube a as shown in Fig. 6, one end being connected to one electrode a<1> and the other end being connected to a metal cap a<3>. The primary winding c is arranged outside the tube. In order to correct for the change in resistance of the tube due to hardening, a metalfilament lamp, which may have a coiled filament, may be included in series with the primary windings. The, primary windings of the oscillators may be adjusted in relation to the secondary windings, so as to obtain equality in discharge at both ends of the tube. The primary and secondary windings may be wound in pancake form. Alternatively the winding may be conical, the primary winding being outside the secondary.
Patent GB-1491337-A (GB)
Title: Fuel pressure control device for internal combustion engines
IPC: F02M37/00
Filed: 1975-02-28
Abstract: 1491337 Pressure regulator R S KAYE and M KAYE 28 Feb 1975 [24 Dec 1974] 8556/75 Heading F1B A fuel pressure regulator for an I.C. engine comprises a housing 1 mounted in the fuel line and arranged only to allow fuel above a minimum pressure to enter through inlet 4 and pass to the carburetter via outlet 9 whilst fuel above a maximum pressure is returned upstream of the fuel pump via relief valve in housing 12. The valves may be ball and spring 7, 6 or alternatively in the case of the relief valve, ball and weight 17, 16. The minimum pressure is set by screwing the inlet 4 in or out. In operation the outlet 10 is positioned below the horizontal and the housing 12 mounted higher than housing 1, the coupling therebetween being a plastics pipe. Housing 1 may be combined with the carburetter whilst housing 12 may be combined with the fuel pump.
Patent GB-492388-A (GB)
Title: Improvements in windscreens
IPC: B60J1/04
Filed: 1937-03-24
Abstract: 492,388. Pivoted windscreen regulators. LANE, Ltd., P., and LANE. P. March 24, 1937, No. 8578. [Class 20 (iii)] A pivoted windscreen 11 is operated by a handoperated shaft 15 having sprockets or drums thereon, which'sprockets or drums are operatively connected to the screen by racks 29 and links 36. The links are connected to brackets 37 on the screen and to brackets 35 on the racks projecting through slots in the guides 30. The housing and bearings for the pinion-shaft 15 and handactuating worm drive are mounted on the top rail of the lower fixed panel 10.
Patent GB-567010-A (GB)
Title: Improvements relating to pickling inhibitors
IPC: C23G1/06
Filed: 1943-05-28
Abstract: A pickling inhibitor is formed by reaction of a coal-tar base with ammonium thiocyanate or with thiourea or mixtures thereof in the absence of an acid, inorganic salt or halogen.  The base may be pyridine, aniline, quinoline, acridine, or homologues thereof, or tar oil fractions containing the said bases, e.g. naphtha, creosote oil and anthracene oil.  A solvent such as amyl alcohol may be used.  A wetting agent or other inhibitor such as treacle or molasses may be used at the same time.
Patent GB-1261303-A (GB)
Title: Improvements relating to seats
IPC: B60N2/28
Filed: 1970-02-23
Abstract: 1,261,303. Seats. HOWARD C. MICKLEM & SON PTY Ltd. Feb. 23, 1970 [Feb. 24, 1969], No.8612/70. Headings A4B, A4H and A4J. A child's seat comprises a foldable frame 2 with tongues 6 for engagement between the seat squab (38) and back rest (37) of a motor car seat and a back rest 14, a seat part 23 and an arm surround 18 mounted on the frame 2 and movable between an operative position and a position affording more ready access by a child to the seat part 23, the seat part 23 being pivotally mounted on the frame 2 so that it may swing downwardly to an out of use position in which it permits a child to stand on the car seat to extend through the arm surround 18. The mounting of the seat part 23 comprises a pair of bracket arms 28 carried by the frame 2, each arm 28 having an elongate slot 27 in which is slidably engaged a pivot pin 26 carried by a side bracket 33 on the seat 23 and a recess 31 which detachably receives a pin 29 on the seat bracket 33. A strap 34 is detachably secured to the seat 23. With the seat 23 lowered a toilet seat Figs. 6 and 7 (not shown) may be detachably supported by the brackets 28. A tray may be detachably secured to and supported by the arm surround. Safety straps 16 are provided. (For Figure see next page)
Patent GB-683303-A (GB)
Title: Thermal stabilization of polymeric methyl methacrylate
IPC: C08F20/14
Filed: 1950-04-06
Abstract: Thermally stabilized, granular polymethyl methacrylate is prepared by polymerizing the monomer in an aqueous vehicle in the presence of an aliphatic monosulphide and heating the resultant granular polymer at 100-150 DEG  C. until the sulphide is activated as a stabilizer.  The methyl methacrylate may be copolymerized with up to 20 per cent of other liquid polymerizable compounds, e.g. ethyl, butyl and isobutyl methacrylates, methyl, ethyl and butyl acrylates, styrene and vinyl acetate.  Specified sulphides are di-2-ethyl hexyl, dimethyl, diethyl, di-n-propyl, di-n-butyl, di-isobutyl, di-n-heptyl, di-n-octyl, n-butyl-n-lauryl and tert.-octyl-n-butyl sulphides.  The amount used is generally from 0.01-1.0 per cent of the weight of monomer.  The heating may be effected in the dry state, or in a liquid medium, e.g. the polymerization system, followed by precipitation.  Polymerization is carried out using a granulating agent, e.g. the sodium salt of polymethacrylic acid, and in the presence of a catalyst, e.g. an azo compound as described in Specification 626,155, or an organic per-compound.  The presence of anti-clustering agents such as sodium and potassium hypophosphites, described in Specification 681,392, and of mercaptan modifiers, described in Specification 582,010, is also desirable.  A buffer, e.g. di-sodium acid phosphate, is also used.  In examples, the granules are heated at 125-128 DEG  C. for 12 to 16 hours, and, in the liquid medium, at 140 DEG  C. for 3 hours.
Patent GB-1377895-A (GB)
Title: Production of ethers
IPC: C07C41/06
Filed: 1973-02-22
Abstract: 1377895 Unsaturated ethers B F GOODRICH CO 22 Feb 1973 [22 Feb 1972] 8676/73 Heading C2C [Also in Division C3] Ethers containing olefinic unsaturation in both groups attached to ether oxygen atoms are made by reacting an allylic halide and an olefinically unsaturated alcohol with a Cu(I) halide and recovering the ether.
Patent GB-586676-A (GB)
Title: Improvements in or relating to grids for thermionic valves
IPC: H01J19/00
Filed: 1942-06-24
Abstract: 586,676. Thermionic valves. M-O VALVE CO., Ltd., WARREN, G. W., and WIDDOWSON, A. E. June 24, 1942, No. 8680. [Class 39 (i)] [Also in Group XXII] A grid for a thermionic valve is made by winding wire round an apertured plate of a metal having the same thermal expansion, fixing the wire to the plate and then removing most or all of the wire from one side of the plate that extends over the aperture. Round a molybdenum plate 1 having an aperture 2 and nickel lugs 3, 3<1> welded thereto is wound a molybdenum wire 4 the ends of which are secured at 5, 5<1> to the lugs. The edges 6, 61 of the plate are then plated or otherwise coated with a more readily fusible metal such as copper and the parts heated, preferably in a non- oxidising atmosphere, to melt the copper and braze the wire to the plate. The wires on the upper side of the plate and the portions 5, 5<1> of the lugs are cut away and the lugs bent down for affixing the grid to vertical supporting wires on the valve. The wire may alternatively be secured to the plate 'by a nickel ring placed round the-aperture and welded to the plate.- In a modification two plates 1 with attached lugs 3, 31 may be placed back to back against spacer 8 and the wire wound round both. After securing the wire by melting the copper at the edges the plates are separated along the dotted line 9, Fig. 3, and the spacer removed. In a further form the wire may be wound round three or more plates arranged to form a cylinder of polygonal section.
Patent GB-583128-A (GB)
Title: Improvements in or relating to gate or door latches
IPC: E05B63/24
Filed: 1944-05-09
Abstract: 583,128. Latches. LAURENCE, G. May 9, 1944, Nos. 8767 and 10447. [Class 44] In a gate or door latch of the kind in which a latch engages a pivoted keeper, the lower edge of the keeper is provided with a number of teeth or shoulders engagable by the latch, so that the gate &c. is fastened even if not fully closed owing to warping or other cause, Figs. 1, 2 show a latch pivoted at 3 in a shallow casing 4 with peripheral flange 5 with screwholes 6 for affixing to the gate &c. The handle 2 is weighted so that the nose 1 is biassed upwards, the movements of the latch being limited by the slot in the end 9 of the casing through which the latch projects into engagement with a pivoted gravity-biassed keeper 24. The keeper is pivoted at 13 in a fixed bracket 14 secured to the post 17. As shown, the bracket is an open-bottomed structure the cover of which limits upward movement of the keeper, downward movement being limited by oppositelydisposed lugs 22, 23 at the top edge of the keeper which rest on inturned flanges at the lower edges of the bracket side members. These side members are extended and provided with screw-holes 16, 19 for affixing to the post, one extension 15 being attached to one side, and the other extension 18 to the front, of the post. When the gate is fully closed the latch nose 1 is held between the inner free end of the keeper and the front of the post. This inner end also has rectangular notches or shoulders 25, 26 by which the gate latch is held when the gate is not quite fully closed, so that opening movement is prevented, and rattle is not appreciable. The lower edge of the keeper has notches 28, 29 preferably shaped so that the projections or teeth 27 are of ratchet form. The notches receive the latch when the gate is only partly closed to prevent both opening and closing movement and prevent rattle. According to the Provisional Specifications the. bracket may be a strip of metal bent to V-form. In this case the lugs rest on the top edges of the brackets side members to limit downward movement, and a projection on the keeper near its pivot limits upward movement. Also, the latch may be fixed on a pivot pin the ends of which have suitable grips for operation from either side of the gate, or the latch may be operated by handleoperated cam means. The keeper may be pivoted and counterbalanced to be biassed upwards, with the latch receiving notches on its upper edges.
Patent GB-611105-A (GB)
Title: An improved electronic energy conversion and control system
IPC: H02P7/292
Filed: 1945-04-10
Abstract: 611,105. Converting; control of consumption apparatus. IGRANIC ELECTRIC CO., Ltd. April 10, 1945, No. 8859. Convention date, April 14, 1944. [Classes 38 (ii) and 38 (iv)] [Also in Group XXXVII] The starting of a periodic electronic discharge is controlled by a saw-toothed voltage and a superposed unidirectional control voltage. Thus, the part C, Fig. 2, of a voltage wave CD which rises gradually and falls abruptly during a half period of voltage A may be displaced to position C<SP>1</SP>, to cut the discharge-igniting voltage line B at any desired point, by varying a biassing voltage E. In Fig. 1, the control voltages are applied to the control grids of two gaseous discharge tubes 3, 4 supplying the D.C. motor armature 2a from a transformer 1. For producing the saw-tooth voltage, a condenser 28 is charged gradually, through resistor 27, by the voltage across the resistor 16 by the transformer 11 and rectifier 15 and is periodically abruptly discharged through the grid-controlled gaseous discharge tube 26. A control voltage at double the frequency of the supply to transformer 1 is applied to grid 26c, through the rectifiers 20, 21 and the transformer 22, by the transformer 14 which is fed, through the phase-shifting combination 12, 13 from tappings on the transformer 1 which also feed the transformer 11. The grids 3c, 4c are also connected to a tapping contact-or to two separate tapping contacts 16b, 16c-on the resistor 16 so that an adjustable negative bias-or an independently adjustable bias for each grid-is applied to these grids. Added to the bias is the voltage across the resistor 33, which is represented by the lines CD of Fig. 2 and is the saw-tooth voltage produced by the alternate charge and discharge of condenser 28, but amplified by the thermionic vacuum valve 31. A further bias is applied to the grids 3c, 4c by part of the voltage across the resistor 10 proportional to the motor armature voltage and acting on the grid control in a corrective sense on any change of armature voltage. The rate of increase of armature current is limited by the action of transformer 5. The motor field winding 2b is supplied by transformer 42 and rectifiers 40, 41.