baber/WOPTO huggingface dataset:
Patent GB-565403-A (GB)
Title: Improvements in and relating to phase modulators
IPC: H03C3/00
Filed: 1943-02-05
Abstract: 565,403. Phase and frequency modulation ; valve generating circuits. MULLARD RADIO VALVE CO., Ltd., and BAILEY, C. E. G. Feb. 5, 1943, No. 1985. [Class 40 (v)] Phase modulation with substantially zero amplitude modulation is effected by differentially modulating two phases of the carrier.wave in quadrature relationship and combining, the outputs, the. quadrature waves being generated by a reciprocally coupled pair of valves. As shown, the triode sections of a pair of triodehexode valves V2, V3 are reciprocally coupled by condensers C, CT of the same order of magnitude as the grid-anode capacity of the valves, and a piezo-electric crystal K or a parallel-resonant circuit is connected between the grid of the valve V2 and earth. The Specification shows that the circuit oscillates at a frequency at which the crystal or resonant circuit presents an inductive reactance, and that the.grid voltages are in quadrature with each other. Each triode grid is connected to a control grid of the associated hexode section, and the anodes of the two hexodes are connected to a common tuned output circuit L1, C4. The amplification of the hexodes is controlled by signal voltages applied in push-pull to their inner grids, the voltages being derived from a microphone M through transformer TR1, valve V1 and transformer TR2. The amplification of the valve V1 is automatically limited by control voltages applied to its grid and derived by diode rectifiers connected across the two halves of the secondary of the transformer TR2. The microphone voltages of higher frequency may be reduced in amplitude by a low-pass filter network in the grid circuit of the valve V1 with the object of giving the modulated output the characteristics of frequency, rather than phase, modulation over this band. The modulated-wave in the circuit L1, C4 is fed to the output feeder through frequency-multiplying stages V4, V5, V6, which may also act as limiters to remove residual amplitude modulation. The Specification shows that the circuit gives pure phase modulation if the radio frequency output of the valves V2, V3 are respectively proportional to #1+ sin x and #1- sin x, where x is the instantaneous modulation voltage. This condition may be approximated by inserting series resistances between the ends of the transformer secondary TR2 and the respective grids.
Patent GB-564032-A (GB)
Title: Improvements in or relating to filters for liquids
Filed: 1943-02-08
Abstract: 564,032. Filters. VICKERS-ARMSTRONGS, Ltd., WOOD, G., and WILKINS, H. C. Feb. 8, 1943, No. 2091. [Class 46] An edge filter in which a wire is helically wound on a former to provide a filter cartridge is cleaned by reverse flow and scraper action, the reverse flow being obtained by small areas of the cartridge being successively placed in communication with a drain chamber at atmospheric pressure, whereby a flushing flow is obtained to entrain dirt from between the wires, this flow being passed to a sediment collecting vessel having a strainer whence the cleaned liquid passes to a reservoir while the scraping action to remove deposits from the surface of the cartridge is given by members associated with the drain chamber and the material so removed falls into a sump in the filter housing. As shown in Fig. 13, the drain chamber is provided by a mouthpiece 58 slidable axially along the filter cartridge 2 and telescoping into a pipe 60 connected through a cock 47 to a sediment-collecting chamber at atmospheric pressure. A hand wheel 61 turns the filter cartridge and through a gear-wheel 62, a pinion nut 63 and threaded shaft 64 effects axial movement of the mouthpiece 58. To. prevent the immediate downward or upward movement of the mouthpiece 58 which would leave a portion of the cartridge uncleaned, the hand wheels 61 drives the' gear 62 through a lost-motion connection 71. At the sides of the housing 69 in which the mouthpiece is slidably guided, spring-loaded scrapers 76 are provided, whereby surface deposits are removed by a single turn of the hand wheel and cartridge to drop into the sump 21. The liquid, such as oil, to be filtered enters at inlet 5 and is discharged at outlet 9. The sediment-collector shown in Fig. 3 comprises a body 22 supported in a reservoir 30 and having a removable settling vessel 24 at the bottom and a spring-pressed filter gauze 25 at the top which yields on excess pressure. The liquid with entrained dirt enters by pipe 23 and the cleaned liquid passes to the reservoir 30 through apertures 29 at the upper end of the body 22 above the filter gauze.
Patent GB-998432-A (GB)
Title: A remotely-controlled toy vehicle
IPC: A63H30/02
Filed: 1964-01-17
Abstract: 998,432. Remotely-controlled toy vehicles. DHARWOOD PAK TO PAU. Jan. 17, 1964, No. 2135/64. Heading A6S.  Aremotely-controlled toy vehicle comprises a reversible electric steering motor 11 which causes, through conventional reduction gearing, a sector 12 which is engaged by a lug 13 of track rod 9 to rotate about its pivot, thus imparting movement to wheels 7. A second reversible motor 5 imparts drive to the toy through a reduction gearing 12. The wheels 7 may be constrained in their dead-ahead position by springs (not shown). The control unit 14 which is connected to the toy by conducting wires contains two dry cells 15, and controls 16-18 effect drive and steering of the toy. The current source could be carried by the toy, and other features, for example a horn and lighting, could be supplied by current from the cells 15.
Patent GB-1411002-A (GB)
Title: Ships rudder control systems
IPC: F15B9/04
Filed: 1973-01-16
Abstract: 1411002 Fluid-pressure servomotor systems SPERRY RAND CORP 16 Jan 1973 [17 Jan 1972]  2163/73 Heading G3P A ship's rudder 12 is connected to a motor 22 shifted by a pump 34 having its displacement controlled by a servomotor 70 with a control valve in a bridge circuit 114, 116 in which one pair of resistances is controlled by a valve 45 in accordance with a command signal and a further pair is controlled by a valve 136 in accordance with pump displacement. An electric motor 36 drives the pump 34 which is connected to the motor 22 through lines 28, 30 and a solenoidoperated blocking valve 32 and a further pump 38 supplying pilot fluid to a biasing piston 66 for the main pump and to the valve 136. Pilot fluid may also be supplied to the lines 28, 30 through a priority valve 76, check-valves 80, 88 low and highpressure relief valves 82, 86 and pilot operated  relief valves 90, 92. The valve 45 receives its command signal from an actuator piston 52 through a pin 134, an arm 54 and a shaft 110 and a feedback signal from the motor 22 through a link 26 and the valve body 46. A valve 40 electrically controlled by a manual or automatic pilot 94 and receiving pilot fluid through a line 42 operates the actuator piston 52 which provides an electrical feedback signal to the pilot through a synchromotor 64 and lines 100. Speed of movement of the piston 52 is limited by adjustable throttles 62 while extent of movement is limited by valves (142) Fig. 4 (not shown), operated by axiallyextending rods (140) on the piston. Relief valves 18 and a by-pass valve 20 are provided for the motor 22.
Patent GB-1279581-A (GB)
Title: Structure for sliding purposes
IPC: B64D25/14
Filed: 1971-01-15
Abstract: 1279581 Escape shoots LE JOINT FRANCAISE 15 Jan 1971 [18 March 1971 4 Nov 1971] 2184/71 Heading B7J [Also in Division B8] To reduce friction, an escape shoot provided with ribs 2, Fig. 3, which run in the direction of sliding, has the upper surfaces thereof coated with a thermoplastic polymer having a very low coefficient of friction, e.g. polytetrafluoroethylene. Examples of other coating materials are given.
Patent GB-1102554-A (GB)
Title: Process for eliminating from a solution anions derived from oxycids
Inventor: GUTH JEAN LOUIS
IPC: B01D15/04
Filed: 1965-01-18
Abstract: The invention relates to hydroxyparacancrinite, 3(Al2O3, 2SiO2, Na2O)2NaOH, which has the X-ray diffraction diagram given in the Specification.  The hydroxyparacancrinite can be made by heating at a temperature above 200 DEG  C. and under a pressure equal to the saturation pressure of water at this temperature a mixture of SiO2, Al(OH)3, NaOH and water in which mixture the molar ratios are: SIO2: Al(OH)3>1, NaOH : Al(OH)3>5 and water: NaOH>6.  The hydroxyparacancrinite can be used for exchange of anions derived from inorganic oxyacids, e.g. SO4, in neutral or slightly alkaline aqueous solution at a temperature \sF200 DEG  C. under the corresponding steam pressure.ALSO:Hydroxyparacancrinite, 3(Al2O3, 2SiO2, Na2O) 2NaOH, which has the X-ray diffraction diagram given in the Specification can be used for exchange of anions derived from inorganic oxyacids, e.g. SO4, in neutral or slightly alkaline aqueous solution at a temperature equal to or greater than 200 DEG C under the corresponding steam pressure.
Patent GB-1169234-A (GB)
Title: Process for the Extension of the Effective Surface of Aluminium Electrodes or Foils for Electrolytic Capacitors
Inventor: PAEHR HANS-WERNER
IPC: C25F3/04
Filed: 1967-01-16
Abstract: 1,169,234. Electrolytic etching of aluminium. H-W. PAEHR. Jan. 16, 1967 [Jan.21, 1966], No. 2198/67. Heading C7B. In a process for the extension of the effective surface area of aluminium electrodes or aluminium foil for electrolytic capacitors by anodic corrosion in a bath containing an electrolyte and a counterelectrode, there is applied across the electrode or foil to be corroded and the counter-electrode a direct voltage and superimposed periodic voltage pulses, e.g. at a frequency of 10-100 cycles/sec, which interrupt the substantially constant corrosion current due to said direct voltage and have a halfwidth of less than 10% of the pulse repetition period. The pulsating voltage may be provided by supplying negative voltage pulses to the part to be corroded and/or positive voltage pulses to the counterelectrode. Pulse shapes which may be used (see Fig.2, not shown) include rectangular and trapezoid pulses, and the pulses are preferably of such height that the voltage difference between the electrodes is equal to the polarization of aluminium with respect to the electrolyte. An aqueous solution of sodium chloride may be used as electrolyte.
Patent GB-211851-A (GB)
Title: Back plate for artificial teeth
IPC: A61C13/00
Filed: 1924-01-30
Abstract: 211,851. Platschick, B. Feb. 20, 1923, [Convention date]. Riveting sets and maps. -In artificial teeth the backing plate 2' for a pin tooth 1 is formed with rearwardly extending flanges 5 surrounding the holes through which the pins 3 project. The flanges 5 are contracted around the pins by means of pliers or the like and the ends of the pins expanded by riveting. A tool for riveting the pin comprises a guide tube 6 and a pointed member 7 which is screwed into the tube 6 so that its point will enter the end of the pin and expand it.
Patent GB-667005-A (GB)
Title: An articulated elastic transmission coupling
IPC: F16D3/68
Filed: 1950-01-31
Abstract: 667,005. Universal joints. MARTINEZ, A. S. Jan. 31, 1950 [Dec. 15, 1949], No. 2534/50. Class 80 (ii). A flexible coupling with ball-and-socket centering comprises a plate 5 the outer face of which has a flanged hollow projection 17 for attachment to a shaft or the like while the inner face has a ball-ended projection 8 journalled in a pair of bearing blocks 10, 11 secured by screws 12 in a socket 3 formed on the inner side of a cross plate 1 the outer face of which has a projecting socket 2 for attachment to the other shaft or the like. The reduced ends of driving blocks 24 of rubber or the like interposed between the arms of the plates 1, 5 are housed in the recessed flanks of members 20 secured against the flanged ends 19 of the arms by screws 21. A rubber or like gasket 14 encircling the neck of the projection 8 has its outer turned-in edge engaged in an external groove 16 on the socket 3.
Patent GB-262980-A (GB)
Title: Improvements relating to take up motions for looms
IPC: D02H13/28
Filed: 1926-01-28
Abstract: 262,980. Taylor, J. Jan. 28, 1926. Take-up motions.-The propelling pawl of a take-up motion is provided with a detachable and renewable part formed of a curved or bent metal plate for engaging the ratchet wheel. As shown, a reversible pawl c is bolted to the pawl arm a and is shaped at both ends e for engagement with the ratchet wheel. In a modification, the pawl' is provided with only one end for engaging the ratchet wheel. Specifications 9583/94, 22541/02, 20668/06, and 14452/11 are referred to.
Patent GB-469124-A (GB)
Title: Improvements in or relating to screw propellors
IPC: B64C11/34
Filed: 1936-01-27
Abstract: 469,124. Screw propellers. TROTMAN, E. W. Jan. 27, 1936, No. 2582. [Class 114] The blades of a variable-pitch screw propeller are displaced in the direction of the axis from holders which are mounted on pivots extending obliquely. The boss 12 supports pivot pins 17 on which are carried blade holders 15. These holders are split and provided with clamping bolts 18 and also have a boss 30 to which is pivotally secured a rod 25 passing to a shoulder 22 on an extension of the propeller shaft. This member 22 is under spring restraint 24 and yields under varying air pressures on the blade whereby the latter are set to new pitch angles. In place of the holder, the root of the blade may be angled and directly mounted on the pivots 17. The propeller shaft is bored and in it is means for shifting the block 22 by either a rod or by oil pressure acting upon a plunger 21 secured to the block.
Patent GB-554739-A (GB)
Title: Improvements in building constructions
IPC: E04C3/42
Filed: 1942-02-28
Abstract: 554,739. Building construction. CHESHIRE FORESTS, Ltd., and HARWOOD, P. Feb. 28, 1942, No. 2650. [Classes 20 (i) and 20 (iv)] The skeleton frame of a building, composed of uprights 1 of steel, concrete, or untrimmed tree trunks united by timber cross members 2, supports arcuate roof beams formed of planks 3, 4, 5 ... nailed together and secured at intervals by rivets or coach bolts 6. The ends are connected by tension wires 7 secured to bolts 8 engaging the socketed ends of flitch plates 10 bolted to the ends of the roof beams and to the uprights 1. Corrugated iron, or timber covered with waterproof felting 14 may be used as roofing and slats 13 are also nailed on the inner side. In an alternative, the roof beams may extend down to the floor, when the tension member may be disposed under or in the floor. The beams may be strengthened by short ties disposed across chords of the arc.
Patent GB-407808-A (GB)
Title: Improvements in or relating to telephone instrument circuits
IPC: H04M1/58
Filed: 1933-01-27
Abstract: 407,808. Substation circuits. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and WIGAN, E. R., 18, Cambridge Road, Lee, both in London. Jan. 27, 1933, No. 2661. Addition to 372,400. [Class 40 (iv).] In an anti-side-tone local-battery substation circuit comprising a three-winding induction coil and two impedances in series, the transmitter T, battery LB, and one winding L3 of the induction coil are connected in series across one impedance Z, a second winding L2 of the coil is traversed by the whole of the line current, the two impedances Z, Ry, form a branch connected in parallel with the receiver R, and the remaining winding L of the coil is connected either in this branch or in series with the receiver. Fig. 5 shows an arrangement in which a three-conductor cord CK connects a handset to the remainder of the apparatus, and the induction-coil windings and impedances are so arranged that by simple changes of wiring at the terminals 1-6 the impedance Z may be cut out and the windings L2, L3 interchanged.
Patent GB-852635-A (GB)
Title: Improvements relating to loading devices
Inventor: SMITH ARTHUR HENRY
IPC: B28C7/08
Filed: 1956-01-27
Abstract: 852,635. Weighing apparatus. BENFORD Ltd. Jan. 25, 1957 [Jan. 27, 1956], No. 2674/56. Class 143 [Also in Group XXX] Weighing apparatus for use on a loading device (see Group XXX) comprises a hydraulic plunger 52 against which rests a skip 40 mounted on arms 44 pivoted at 45. A fluid pressure gauge 56 connected to the plunger is calibrated in units of weight. A hand pump 57 is provided for priming purposes.
Patent GB-162100-A (GB)
Title: Improvements in and connected with the cleansing of condensers and like apparatus
IPC: F28G9/00
Filed: 1920-01-29
Abstract: 162,100. Martin, F. G. Jan. 29, 1920. Cleaning and pickling.-Condensers, feed-water heaters and like apparatus are cleaned by means or dilute nitric acid of not more than 5 per cent strength. The acid is circulated through the apparatus for the required time after which water is circulated to remove the acid.
Patent GB-1439562-A (GB)
Title: Building a laminate of fibreglass reinforced polyester resin on a spirally rotating mandrel
IPC: B29C41/08
Filed: 1974-01-21
Abstract: 1439562 Depositing fibreglass/resin on mandrels FILON-AZOTE 21 Jan 1974 [22 Jan 1973] 02744/74 Heading B8G [Also in Divisions B5 and F2] A process for forming a fibreglass reinforced polyester article, e.g. a pipe or tank, comprises either spraying resin or allowing it to pour from a horizontal surface on to a spirally rotating mandrel 1, depositing pieces of chopped fibreglass on to the resin and impressing the chopped fibreglass into the resin by applying a plurality of strands 6 which run parallel to the path of a point on the surface of the rotating mandrel. The strands may comprise glass, yarn, fibre, metal, wire or nylon thread and may be spaced apart by 0À2 to 0À6 times the length of the pieces of dropped fibre. The latter may have a length of 1-25 cm. Ribbed or corrugated articles may be formed by depositing resin on the tops only of the ridges of the mandrel.
Patent GB-1040512-A (GB)
Title: Improvements in gripper shuttle looms
IPC: D03D47/24
Filed: 1965-01-21
Abstract: The weft thread passes through eyes in the ends of a series of leyers, alternate ones being rocked in one direction transversely to the path of the thread, and the others being left stationary or rocked in the opposite direction, so as to draw weft from a bobbin and temporarily store it in zigzag formation.  When the end of the weft has been presented to a gripper shuttle and the shuttle is picked, the levers are swung back to bring the eyes into alignment, the lever nearest the shuttle moving first followed by the others in quick succession.  As described, there are two sets of levers operating in opposite phase on separate but identical weft threads, so that one set is drawing weft from a bobbin whilst p  the other set is releasing its weft to the shuttle.  Each lever is actuated by a connecting rod driven by a pair of conjugate cams, which also actuate a lever of the other set; the point of attachment of the connecting rod to the lever can be varied to alter the angle of swing and hence the amount of weft drawn off; alternatively, each lever may have a row of guide eyes at different distances from its pivot.  Rods moved endwise by the cams may be substituted for the levers.
Patent GB-326619-A (GB)
Title: Improvements in or relating to automatic looms for weaving
IPC: D03D45/20
Filed: 1929-01-26
Abstract: 326,619. Atherton, J. Jan. 26, 1929. Shuttles, changing bobbins and other weft carriers in, automatically.-To prevent damage to the shuttle &c., e.g. when the shuttle is not properly boxed, the transferrer hammer A is connected to its operating shaft B through a spring D or a spring-pressed pin G.
Patent GB-1024861-A (GB)
Title: A fluid flow control valve
IPC: F16K31/528
Filed: 1963-01-23
Abstract: 1,024,861. Valves. SIEMAG MASCHINEN UND STAHLBAU NETPHEN G.m.b.H. Jan. 23, 1963 [Feb. 7, 1962], No. 2844/63. Heading F2V. The connection of a working part 13 to either a supply pipe 1 or atmospheric ports 15 is controlled by a hollow shaft 3 rotatable and axially slidable relative to a casing 9 embodying the ports 13, 15; the casing has a stud 8 engaging an endless cam groove 7 in the shaft 3. The latter incorporates sleeves 6, 6a which contact the casing interior and depending upon whether the ports 11 are between or beyond the sleeves so port 13 is connected to the pipe 1 or ports 15. A further casing port 16 provides for the escape of fluid between the sleeves and casing during relative movement between the shaft and casing.
Patent GB-560748-A (GB)
Title: Improvements in or relating to plasticizing of amino-aldehyde resins
IPC: C08K5/053
Filed: 1942-03-05
Abstract: Amino-aldehyde resins such as those obtained from an aldehyde and urea, thio-urea, guanidine, amino-triazines and dicyandiamide are plasticized with di- or tri-hydric alcohols obtained by polymerizing polyene fatty acids (including sorbic acid) or their esters and reducing to the corresponding alcohols by hydrogenation; or esters of these alcohols may be used; many such esters are mentioned including benzyl furfuryl and stearyl esters but the lower aliphatic esters are preferred.  The resins are preferably alkylated by adding an alcohol such as ethyl, propyl, butyl, amyl or benzyl alcohol or cyclohexanol to the initial condensation product as an aqueous syrup.  In examples: (1) a coating-composition comprises alcohol mixture A (described below) butylated urea-formaldehyde or melamine-formaldehyde resin in xylene-butanol mixture and xylene; (2) is similar but with alcohol mixture B; (3) with alcohol mixture C; (4) with alcohol mixture D; (5) with ester mixture E and (6) with ester mixture F or G.  Di- and tri-hydric alcohols and their esters. Alcohol mixture A is made by heating methyl esters of tung oil acids in inert gas at 300 DEG  C., unpolymerized esters are removed at 1-5 mm. pressure and the ester polymer is reduced to the alcohol by hydrogenation with a copper chromite catalyst; alcohol mixture B is made by heating methyl esters of soya acids with activated bentonite in an inert gas at 280 DEG  C. and the ester polymer is reduced as above; alcohol mixture C is made similarly from methyl esters of dehydrated castor oil; alcohol mixture D is a fraction of mixture C obtained by a distillation at 2 microns in a molecular still and having the formula C36H70(OH)2.  Ester mixture E is made by heating alcohol mixture A with succinic acid; ester mixture F is made by heating alcohol mixture C with tricarballylic acid, and ester mixture F by heating ester mixture D with phthalic anhydride.  The probable structure of the several alcohols is shown by graphic formul .
Patent GB-889928-A (GB)
Title: Improvements in and relating to the production of fibres from lignocellulosic material
IPC: D21B1/12
Filed: 1960-01-27
Abstract: Fibres suitable for dry forming into a mat <PICT:0889928/IV (a)/1> which may be consilidated to a board are produced by exposing lignocellulosic material, e.g. wood chips, to steam at a pressure, e.g. 25 to 100 p.s.i., and for a time, e.g. 1 to 6 minutes, sufficient to soften the chips, but insufficient to form appreciable quantities, e.g. greater than 5% by weight, of water-soluble compounds from constituents of the chips, hereafter pressing the softened chips before finally reducing them to fibres between a pair of rotating grinding discs.  In the apparatus shown, chips stored in silos 12 are conveyed by an endless belt 13 to a surge chamber 4 and thence up an elevator 15 to an upper surge bin 16 from whence they are admitted in controlled quantities through a valve 18 into a cooker 19.  Softened chips leave the cooker through a valve 21 and are moved by a conveyer 22 to screw conveyers 23 feeding screw presses 25 followed by refiners 26.  One of the shafts carrying a grinding disc in the refiner is drilled axially to provide an opening through which resin may be introduced, if desired, to produce fibres having a resin content from 0,5 to 10%.  A water-repellent, e.g. wax, may also be added in amount from 0,5 to 4%.  After discharge from the refiner, the fibres are conveyed through conduits 65 by hot air streams which reduce their moisture content to 8 to 12%. Before final felting, the fibres may be subjected to air separation, classification and, if not effected in the refiners, resin binder mixing.  The felted mat of fibres is then hot pressed p  to cure the resin and form a board of S.G. 0,8 to 1,2.