baber/WOPTO huggingface dataset:
Patent GB-592097-A (GB)
Title: Improvements in switches for high frequency electrical oscillations
IPC: H01P7/00
Filed: 1945-03-07
Abstract: 592,097. High - frequency transmission. GENERAL ELECTRIC CO., Ltd.. and EPSLEY, D. C. March 7, 1945, No. 5661. Addition to 564,988. [Class 40 (iv)] [Also in Group XL] A switch for high frequency oscillations of wavelength A of the type described in the parent Specification, comprises a uniform transmission line of length l in this case different from a multiple of #/4, means for approaching a conductor to the remote end to close it with a given capacity C, and auxiliary series and shunt elements Zs, Zp at the near end such as to make the input impedance Zi at the near end 0 or co either according to the proximity or remoteness of the conductor at the far end or vice versa. Equations are given whereby Zp and Zs may be calculated to make (i) Zi=# when Z2=<1>/jwC and Zi=0 when Z2=# or (ii) Zi=0 when Z2=<1>/jwC and Zi=# when Z2=#. For particular relationships between # and l only a simple series capacity or a simple shunt inductance may be required as the auxiliary elements. The auxiliary impedances may be provided by appropriate lengths of transmission line. A series of such switches may be branched off a transmission line at #/4 spacing as described in Specification 568,379. Specifications 515,824, 527,380 and 531,274, [all in Group XL], also are referred to.
Patent GB-967355-A (GB)
Title: Process for metering and transferring molten metal and apparatus useful in the process
IPC: B22D17/30
Filed: 1963-02-12
Abstract: 967,355. Casting-machines. DOW CHEMICAL CO. Feb. 12, 1963 [Feb. 14, 1962], No. 5698/63. Heading B3F. [Also in Division F1] Molten metal is supplied to the shot chamber of a die-casting machine by drawing it through a valve into a chamber by applying a reduced pressure to the chamber, closing the valve and delivering the metal from the chamber to a delivery tube by applying pressure to the chamber, the delivery being controlled by opening and closing a second valve communicating with the delivery tube, in such manner that both valves are not closed at the same time. The two valve heads 52, 57 are mounted on one stem 49 in an assembly 12 and actuated by an air cylinder 21 controlled through a timer. The molten metal is drawn from the supply 15 through open valve 52 into the cylinder 41 of a piston pump 10 on the downward suction stroke of the open-ended piston 27 connected to a yoke 34 driven by a reciprocating air piston 20 also controlled by a timer. On the upward stroke of the piston the valve 52 is closed, valve 57 is open and metal is forced through the delivery pipe 13, the required quantity of metal being delivered and the valve 57 being closed while the piston is still on its upward stroke. Major changes in volume to be delivered can be achieved by changing the pump, smaller changes by adjusting the stroke of the pump piston 27 as by adjusting the stroke of the actuating air piston. Delicate changes in volume can be made by adjusting the timing of the valve operation and piston speed. For casting magnesium and alloys thereof metal contacting surfaces are of chrome steel, for aluminium &c., of steel coated with refractories such titanium diboride and zirconium diboride. In a modification, Fig. 7, the molten metal is drawn into a chamber 67 by applying a vacuum thereto and expelled by applying a pressurized inert gas such as argon, a contact 70 causing the valves to be actuated when the metal in the chamber reaches a predetermined level.
Patent GB-268523-A (GB)
Title: Improvements in the arrangement and installing of aero engines
IPC: B64D27/06
Filed: 1926-03-01
Abstract: 268,523. Elliott, A. G. March 1, 1926. Propelling.-An aero engine having four rows of cylinders a equi-spaced around the crank shalt has the rows arranged with axes vertical and hori. zontal as shown. The engine is mounted by brackets on longitudinal arms e fixed on the nacelle; additional-arms e<1> may be used if desired.
Patent GB-580120-A (GB)
Title: Improvements in the manufacture of modified synthetic resins
IPC: C08G63/48
Filed: 1943-04-12
Abstract: An oil-modified alkyd resin is prepared by heating glycerol, phthalic anhydride and an oil with colloidal graphite dispersed in the glycerol and/or oil.  The resin solution can be used for the impregnation of paper, cloth, asbestos or other natural or synthetic fibrous material, increasing its conductivity and reducing the coefficient of friction, to give products with sealing applications, e.g. for use in oil seals, air seals and washers, and for use on rotary shafts as a liquid sealing material.  In an example, a 10 per cent dispersion of colloidal graphite in castor oil is heated with phthalic anhydride and glycerol until the acid member falls to 15-20, after which the resin is rapidly cooled by addition of a mixture of xylol and butanol.  Specification 580,121 is referred to.
Patent GB-545402-A (GB)
Title: Improvements in or relating to electrical energy transference systems
IPC: H01J25/00
Filed: 1941-05-06
Abstract: 545,402. Electron oscillators; cathode-ray tubes. ELECTRICAL RESEARCH PRODUCTS, Inc. May 6, 1941, No. 5883. Convention date, May 11, 1940. [Class 39 (i)] A wave guide 28, Fig. 3, for an electromagnetic field is formed so that a velocity-modulated beam will impart maximum energy to the field over determined cycles. The beam from the gun 11 is modulated by the resonator 15 and is subjected after leaving the drift tube 17 to a permanent deflection force between the plates 18, 19. Only, say, the positive half of the signal cycle is used to provide energy from the modulated beam the other part being negatived by deflection of the beam away from the guide by the plates 23, 24. The deflection by the plates 18, 19 gives a velocity spectrum and the guide is shaped so that the wave therein meets the beam as it sweeps over the guide. The guide is slotted to allow the beam to pass to the collector 30; the guide may be circular in shape or in two parts 32, 33, Fig. 5, with a narrow central part. The drift tube may be omitted and both halves of each cycle of the modulated stream may be used by providing a double deflecting field 38, 39, 40, Fig. 6, and extending the wave guide 42, 43 on each side of the tube axis; an alternating wave is applied to the first deflecting pair 35, 36 to bring the beam on one side or other of the central plate 40. The deflector plates 35, 36 may be placed in front of the modulating resonator grids. Magnetic deflection may be used instead of electro static deflections. The unused portion of the beam may be received on a collector 29, Fig. 5, at the side of the guide.
Patent GB-621940-A (GB)
Title: A tool for use in removing the cardboard or like lid of a milk bottle
IPC: B67B7/12
Filed: 1947-03-01
Abstract: 621,940. Milk bottle disc removers. HIPPERSON, M. W. March 1, 1947, No. 5924. [Classes 66 and 125(ii)] A tool for removing milk bottle discs comprises a disc 16 from which are pressed four spikes 18, the pointed extremities of which are co-planar, and which spikes extend slightly downwardly and in an arcuate lateral direction, or in a direction tangential to such an arc, the disc being rotatably secured to a flat member 12 having a peripheral flange 14 by a screw 21 and nut 22. The screw is rigidly secured to the disc and carries a washer 23 against which the nut is tightened. A handle 24 is secured to the nut. In a modification, the disc is rigidly secured to the member 12 which also has the handle rigidly secured thereto.
Patent GB-466622-A (GB)
Title: Improved storage reservoir for gas, steam, or volatile liquids and method of fabricating the same
IPC: E04H7/06
Filed: 1936-02-28
Abstract: 466,622. Gas holders ; tanks. STACEY BROS. GAS CONSTRUCTION CO. Feb. 28, 1936, Nos. 6040 and 6041. Convention dates, March 4, 1935 and Dec. 14, 1935. [Classes 54 and 69 (i)] [Also in Groups X and XXII] A holder or storage reservoir for gas, steam, or volatile liquids is made by erecting a framework comprising uprights 4 and girth girders 8 secured together by welded gusset plates 11, preparing a number of plates of such a size as to span the spaces between and overlap slightly the uprights and girders, mounting the plates on the framework by pegs 9, (i inserted through apertures in the flanges of the uprights and girders and in the edges of the plates, integrating the pegs with the plates, and finally welding the plates along their edges to the framework. The crevices 2, 3 between the plates, may be filled by welding and ground smooth. The plates and girders may be curved when a cylindrical holder is to be erected. A minimum number of pegs is used and they are integrated with the plates by first being deformed to fill the holes 17 in the plate and then being welded in position. Any excess metal is ground off.
Patent GB-696974-A (GB)
Title: Improvements in and relating to supporting brackets
Inventor: BRADDY HERBERT WILLIAM JOHN
IPC: A47B57/42
Filed: 1951-03-14
Abstract: 696,974. Supporting brackets. BRITISH INSULATED CALLENDER'S CONSTRUCTION CO., Ltd. April 8, 1952 [March 14. 1951], No. 6106/51. Class 52(v) A supporting bracket comprises a sheet metal supporting member 1 with a tongue 4 projecting at more than 90 degrees to the platform and with side flanges 2 connected at their lower rear edges by a plate 5 to form a horizontal ledge 6. The tongue 4 engages behind a transverse bar 8 pressed out from a channel section upright 10, the lower end of the tongue engaging the web surface below the transverse bar 8. To secure the supporting member 1 in position downward pressure is applied thereto so that the angle between the platform and the tongue is reduced until the plate 5 engages the web of the upright 10, the horizontal ledge 6 engaging under a projection 9 on the vertical upright. The side flanges 2 have extensions 12 which bear against the flanges of the upright 10 to prevent lateral movement of the supporting member.
Patent GB-733672-A (GB)
Title: 5-n-heptyl-2-thiohydantoin and salts thereof
IPC: C07D233/86
Filed: 1953-03-05
Abstract: The invention comprises 5-n-heptyl-2-thiohydantoin and non-toxic salts thereof.  The hydantoin is made by heating 2-amino-nonanoic acid with a water-soluble inorganic thiocyanate and an alkanoic acid anhydride containing 4-8 C atoms in the molecule, preferably in the presence of a lower alkanoic acid, and deacylating the resulting 1-acyl-5-n-heptyl-2-thiohydantoin by heating with a strong base or mineral acid to remove the 1-aryl group.  Preferred reactants are acetic anhydride, acetic acid, sodium hydroxide, hydrochloric acid and ammonium thiocyanate. Sodium, potassium and calcium thiocyanate are also specified. Non-toxic salts specified are the potassium, sodium, calcium, magnesium, ammonium and ethanolammonium salts.  The products have antitubercular properties.  An example is provided in which the preferred reagents are used.
Patent GB-261233-A (GB)
Title: Improvements in and relating to easy chairs
IPC: A47C1/027
Filed: 1926-03-04
Abstract: 261,233. Crick, T. March 4, 1926. No Patent granted (Sealing fee not paid). Seat adjustments; rests, foot. - Means for securing in position the angularly adjustable pivoted back 1 of a chair comprise a bar 6, disposed beneath the seat, connected by a link 7 to the back, and slidable between friction blocks 10, 11, the block 11 being capable of movement away from the bar 6 by means such as a lever 15 and a handoperated rod 21. The block 11 is preferably guided by pins 12 and slots 14, and may be moved by the tooth 18 on the end of the lever 15. Springs 24 are provided to return the back to normal vertical position. A leg-rest or footrest 26 - - 28 may be provided.
Patent GB-164441-A (GB)
Title: Improvements in and relating to brushes
IPC: B25G3/38
Filed: 1920-03-01
Abstract: 164,441. Craven, P. A. March 1, 1920. Handles for brushcs.-Brushes attached to their handles by pivotal joints are provided with two or more projections or spigots engaging in corresponding holes or sockets in one of the members of the joint. As shown in Fig. 1. the brush comprises a length of twisted wire A carrying the bristles B, and has two projections C engaging holes D, Fig. 5, in the member E of the joint F. Screws G may be provided for fixing the projections C in position. A transverse rib L on the member F engages one of a series of diametrical grooves L<1> in the member P of the joint, and the two members are fixed together in the adjusted position by a flyheaded screw M. The member P is carried by a socket H<1> fixed on the handle H. In the modification shown in Fig. 2 the projections C are fixed to the wood stock 0 of the brush. Three holes D may be provided in the member E and three projections on the brush.
Patent GB-1499882-A (GB)
Title: Sound attenuating structure
IPC: G10K11/172
Filed: 1975-02-14
Abstract: 1499882 Silencing gas turbine engines ROLLS-ROYCE Ltd 9 Feb 1976 [14 Feb 1975]  6316/75 Headings F1G and F1J [Also in Division F2] A sound attenuating structure 10 comprises a metal sheet 12 which has a large number of small holes 14 in it, a cellular metal structure 16 in the form of a honeycomb layer, and a further metal sheet 18 which has a number of flanged holes 20 in it, sheets 12 and 18 being fixed to respective sides of honeycomb layer 16 e.g. by brazing. A further sheet 22 is formed into a flanged box and welded via its flange 24 to the periphery of the structure, the space between the sheet 22 and the perforate sheet 18 being filled with a bulk absorber material 26, e.g. a ceramic fibrous material. Each cell wall of the honeycomb layer 16 is provided with slots 28 below the lips of respective flanges 20a of the holes 20 in sheet 18. In Fig. 3, a gas turbine engine air intake 30 is shown as including a portion made up from such a sound attenuating structure 10 of which the porous sheet 12 forms the surface exposed to intake air-flow and noise emitted from the engine. Rainwater or condensation, if present, will enter the small holes 14 but will be reduced to small globules which, due to surface tension, will cling to the undersurface of sheet 12 and run down the cell walls to collect in channels 32 formed by the flanges 20a, from whence it can pass from cell to cell via slots 28 and to atmosphere via a suction pump 34 and appropriate ducting 36. Where the structure 10 is utilized to form part of the inner wall of a jet pipe (not shown) and is thus exposed to fuel spillage, the spilled fuel is collected as above and drained overboard, or returned through a suitable filter system to the fuel tube.
Patent GB-236971-A (GB)
Title: Improvements in, or connected with, steam superheaters
IPC: F22G7/06
Filed: 1924-06-23
Abstract: 236,971. English, W. E. June 23, 1924. Fire and smoke-tube superheaters.-In a steam superheater of the type in which the superheating pipes are situated in superposed fire or smoke tubes, the ends being connected to a header with alternate inlet and outlet chambers, the header is formed with flat upper and lower surfaces. Steam enters at b and flows through the space c and chambers d to the tubes k. The superheated steam passes into the chambers e, space f, and thence to the outlet g. The chambers d, e are arranged alternately as in Fig. 3, and the chambers c - - f have common upper and lower surfaces. The tubes k are secured by bolts i passing through the walls between the chambers d, e. Specifications 17618/13 and 144,381 are referred to.
Patent GB-1435844-A (GB)
Title: Inverter
IPC: H02M7/525
Filed: 1974-02-13
Abstract: 1435844 Controlling inverters UNITED AIRCRAFT CORP 13 Feb 1974 6544/74 Heading H2F In an impulse commutated inverter of the type in which load current is alternately provided through a pair of main controlled rectifiers 10, 12, commutated by a commutation switch (52 or 60), controlling a LC commutating circuit 44, 50, means 27 is provided, responsive to a rapid increase in load current for generating a control signal for decreasing the time interval between the turning on of the commutation switch (52 or 60) and the turning on of the non-conducting main controlled rectifier 58 or 64. As described, each main controlled rectifier 10, 12 is turned off at a time after turning on of the commutation switch 22 ot 60 equal to half the natural period of the LC commutating circuit 44, 50. When a sudden increase in load current is sensed by transformer 27, this time is reduced to 0À767 of the natural half-period. The load current in transformer 27 is fed to a peak-to-peak detector (Fig. 2, not shown) the output of which is monitored by a high pass filter, and, if sufficiently rapid, triggers a monostable multivibrator giving a pulse of 30 ms. Generating triggering pulses.-Fig. 3 shows a source 80 of triggering pulses for the main thyristors 10, 12 and commutating thyristors 52, 60. Each pulse triggers a monostable multivibrator 82 which triggers a further monostable 86 after a delay. The trailing edges of the output from monostable 86 successively sets and resets flip-flop 98 the output of which alternately enables AND gates 90, 91; 92, 93 to pass normal trigger pulses from 80 to the commutating thyristors 52, 60 and delayed pulses to the main thyristors 10, 12. Following a sudden increase in load current, the 30 ms pulse from the time change unit 66 alters the delay imposed on monostable multivibrator 82 so that the main thyristors 10, 12 are triggered more rapidly after the commutating controlled rectifiers 52, 60.
Patent GB-768949-A (GB)
Title: Manufacture of polyfluorethyl ether condensation products
IPC: C08F8/18
Filed: 1954-03-05
Abstract: Polyfluoroethyl ether condensation products are produced by condensation in aqueous alkali of a polyhydric polymer and a polyfluorochlorethane of formula C2HxFyClz, wherein x+y+z equals 6 and y is at least 2.  Polymers specified are polyvinyl alcohol and its partial esters, acetals, mixed esters, mixed acetals and ester/acetals; and cellulose or partial esters thereof.  Increased concentration of alkali gives increased etherification.  The products obtained may be recovered as flakes or granular powders or pellets. The ethers may be further modified by partial or total or mixed esterification and acetalization, e.g. using acetaldehyde, acetic anhydride/sulphuric acid or nitric acid.ALSO:Polyfluoroethyl ether condensation products are produced by condensation in aqueous alkali of dextrin, or a partial ether thereof, and a polyfluorochlorethane of formula C2HxFyClz, wherein X + Y + Z equals 6 and Y is at least 2. Increased concentration of alkali gives increased etherification. The ethers obtained may be further modified by partial or total or mixed esterification and acetalization.
Patent GB-856500-A (GB)
Title: Improvements in or relating to electrical musical instruments
IPC: G10H5/10
Filed: 1959-02-25
Abstract: 856,500. Electrophonic musical instruments. FRILI A.B. Feb. 25, 1959 [Feb. 25, 1958], No. 6597/59. Class 88 (2). A circuit for generating noise signals is controlled by two self-returning pedals (or keys) which impose different characters upon the noise signal produced. The pedals may also control a circuit for generating bass notes. As shown, the frequency of a multivibrator V1, V2 (Fig. 1), is determined by key-controlled tappings on a chain of resistors r1-r12. The selected bass note is sounded when valve V3 is fired by the connection of earth to terminal 103. This is effected by the depression of pedals P1 and P2 (Fig. 3), or of pedal P1 alone if switch S2 has been closed. Valve V10 (Fig. 2) generates a continuous noise signal, and a switch S1 enables a choice to be made between signals characteristic of, say, a side-drum and a cymbal. If pedal P1 alone is actuated, an undamped percussive sound is produced. This sound is damped by the actuation of pedal P2 and decays gradually as condenser C30 discharges if pedal P1 is then released.
Patent GB-1495043-A (GB)
Title: Soft contact lenses and a process and composition for use in their manufacture
IPC: C08F220/04
Filed: 1975-02-18
Abstract: 1495043 Soft contact lens HOYA LENS CO Ltd 18 Feb 1975 [27 May 1974] 6727/75 Heading G2J [Also in Division C3] A soft contact lens having a water content of at least 45% and a tensile strength of at least 100 g/mm<SP>2</SP> consists of a copolymer of (a) 70-93 wt. per cent of an alkylene glycol monoacrylate or monomethacrylate, (b) 0À3-2À0 wt. per cent of a polyfunctional monomer, (c) 1-10 wt. per cent of a monomer having at least one carboxyl group in its molecule and (d) 5-20 wt. per cent of an alkyl acrylate or methacrylate, at least some of the carboxyl groups being ionized. The lenses of the invention are prepared by casting the above compositions in moulds, and raising the compositions temperature from 35 to 110‹C to effect polymerzation. The product is then processed into a "hard lens", which is swollen by a hydration treatment which includes treatment with a solution at a pH from 8 to 12. In the examples mixtures of (a) monomethacrylates of ethylene or propylene glycols, (b) dimethyacrylates of ethylene, diethylene or tetraethylene glycols (c) methacrylic or itaconic acid and (d) methyl, ethyl or n-butyl methacrylate were polymerized using azobis isobutyronitile or diisoproplyproxycarbonate as initiators, and after forming into a lens, were softened by immersion in solutions containing NaHCO 3  and K 2 CO 3 .
Patent GB-1503591-A (GB)
Title: Method of lubricating rolling contact bearings
IPC: C10M171/00
Filed: 1975-02-18
Abstract: 1503591 Hydrocarbons; lubricants MONSANTO CO 18 Feb 1975 [19 Feb 1974 28 March 1974] 6770/75 Headings C5E and C5F Linear dimers of alpha-methylstyrenes are made by contacting the monomers with a catalyst such as a mixture of phosphorus oxychloride or oxybromide with a strong mineral acid, e.g. HCl, HBr, H 3 PO 4 , HNO 3 , H 2 SO 4  or an aqueous solution of any of these. Other catalysts are activated montmorillonite and Lewis acids. The isomeric composition of the dimers in the product depends on reaction temperature; 1-pentene derivatives predominate at 0‹ to 80‹ C., 2-pentene derivatives at 90‹ to 130‹ C. Bicyclohexyl-alkanes are made by hydrogenating these dimers, using conventional catalysts, preferably in a solvent. Rolling-contact bearings are lubricated by the use of a lubricant of which the base stock is or contains a major amount of one or more hydrogenated dimers or trimers of alpha-methylstyrene, containing less than 20% of hydrindan derivatives. Bearings that form part of a traction drive mechanism in which the same fluid is used as traction fluid and as lubricant for the bearing are excluded.