baber/WOPTO huggingface dataset:
Patent GB-285654-A (GB)
Title: Improvements in or relating to wireless or like high-frequency transmission installations
IPC: H03H2/00
Filed: 1927-03-01
Abstract: 285,654. Jackson, L. Mellersh-, (Lorenz Akt.-Ges., C.). March 1, 1927. Filter circuits; harmonics, producing and absorbing; modulating systems.-A filtering arrangement for eliminating undesired frequencies from a circuit, particularly applicable to the elimination of higher harmonics and side waves in a radio transmission system, comprises a balanced transformer, the two primary windings of which are connected in series respectively with a selective acceptor or rejecter circuit, and with a non-selective impedance.The filter may be used for suppressing the pure carrier wave in a modulated high-frequency transmission system; and for suppressing a powerful fundamental wave when' determining and measuring the frequency and strength of harmonics. Fig. 1 shows a circuit for eliminating a single disturbing oscillation from the output of a frequency-multiplying choke 1. The output is passed in parallel through the two primary windings 5, 6 of a transformer, one branch including an acceptor circuit 16 tuned to the undesired frequency, and the other branch an equivalent resistance 17. For the undesired frequency, these branches pass equal currents which balance out in the secondary coils 7, 8. Other frequencies are passed into a tuned secondary circuit II coupled to the aerial coil 12. The primary and secondary coils 5 - - 8 are symmetrical in space as well as electrically. When it is desired to transmit selectively one wave, and to suppress all others, a rejector circuit 18, Fig. 2, tuned to the desired wave replaces the acceptor circuit 16. The circuit 18 should comprise large capacity and small inductance; and the coils 5, 6 should have high inductance so that they substantially determine the current phase in the branch circuits. Currents below the desired frequency can be more accurately balanced out by switching in an inductance coil 19, and current above the desired frequency by switching in a capacity 20. By using two balancing arrangements (of the kind shown in Fig. 2) in cascade, both higher and lower undesired frequencies may be accurately balanced out. Filters of the kind shown in Fig. 1 may also be connected in cascade, and may be followed by filters of the Fig. 2 type. Fig. 4 shows a modified filter employing separate instead of branched circuits. One of the circuits interposed between the source 1 and the aerial 12 includes a rejector circuit 21, or an acceptor circuit. For the suppression of the pure carrier wave in radio telephony, the modulated wave is applied to the two branched circuits of Fig. 1, and the acceptor circuit 16 - tuned to the carrier wave which is thereby eliminated from the circuit II. Additional filter circuits may also be used for the suppression of one of the side-bands. Higher harmonics or side waves may be measured by coupling a measuring- circuit to the circuit II of Fig. 1, the powerful fundamental wave being excluded by the acceptor circuit 16, in combination with the balanced transformer 5 - - 8. For this purpose the circuit II is untuned.
Patent GB-768756-A (GB)
Title: Non-woven fabrics
IPC: D04H13/00
Filed: 1955-02-25
Abstract: 768,756. Wadding. PERSONAL PRODUCTS CORPORATION. Feb. 25, 1955 [Feb. 26, 1954], No. 5770/55. Addition to 695,522. Class 142 (4). The paper tissue of the composite fabric described in the parent Specification is of a stretchable. nature and is, for example, a creped paper tissue.
Patent GB-586026-A (GB)
Title: Improvements in or relating to the preparation of a sulfanilylamidine
Filed: 1944-03-30
Abstract: Para - aminobenzenesulphonylamidines unsubstituted in the amidine group are prepared by hydrolysing the corresponding para-acylaminobenzenesulphonylamidine with alcoholic mineral acid. The preferred conditions are to treat the p-acylamino compound with a 15-25 per cent solution of the acid in an alcohol for 12-36 hours at room temperature.  In examples: (1) p-acetylaminobenzenesulphonylacetamidine, prepared by the action of p - acetylaminobenzenesulphonyl chloride on acetamidine hydrochloride, is warmed with alcoholic hydrochloric acid; (2) the hydrolysis step of example (1) is applied to p-acetylaminobenzenesulphonyl-propionamidine, -butyramidine, -tridecanamidine and -phenylacetamidine, to form the corresponding free p-amino compounds.  Tridecanamidine is prepared by saturating an ether-alcohol solution of tridecanonitrile with dry hydrogen chloride and converting the tridecanimino ethyl ester hydrochloride into the required tridecanamidene with alcoholic ammonia.
Patent GB-1110350-A (GB)
Title: Process of producing flexible foam polystyrene sheeting
Inventor: KRACHT GERHARD
IPC: B29C44/34
Filed: 1967-02-08
Abstract: Flexible, resilient, foamed polystyrene is produced by pre-expanding granules of polystyrene plastics material containing an expanding agent, by applying steam thereto within a vertically unconfined space at a temperature substantially above 212 DEG  F., into larger particles having lower density but possessing further expansibility, drying the thus pre-expanded particles at 100 DEG  to 300 DEG  F. to remove condensed steam and prevent condensation of the expanding agent in the particles, further expanding and moulding the thus heated particles in a closed moulding chamber at elevated pressure and a temperature above 212 DEG  F. into a moulded, foam, plastics body which is removed from the chamber whilst still at a temperature of from 100 DEG  to 200 DEG  F., and severing sheeting from said body whilst at the same temperature range of from 100 DEG  to 200 DEG  F. Additional external heat may be applied during severing to reduce shrinkage of the body and the resulting sheets may be compressed whilst still hot to increase resilience and render the surfaces smooth or heated at 150 DEG  to 180 DEG  F. to further reduce the density and increase resilience.  Suitable polymers are homopolymers of styrene and copolymers of styrene that contain at least 50% by weight of styrene and mixtures of such polymers. Copolymerizable monomers are conjugated 1,3-dienes, alpha-beta unsaturated monocarboxylic acids and derivatives thereof, esters of methacrylic acid and vinyl esters of carboxylic acids.  The expanding agent is suitably pentane, hexane, heptane, petroleum ether, cyclopentane, cyclohexane or other saturated aliphatic or cycloaliphatic volatile liquids.
Patent GB-126655-A (GB)
Title: Improvements in and connected with Pipe and Cylinder Flange Joints.
Inventor: HELE-SHAW HENRY SELBY
IPC: F16L23/10
Filed: 1916-04-26
Abstract: 126,655. Shaw, H. S. Hele-. April 26, 1916. Doors, lids, and covers.-A device for securing lids or covers to flanged cylinders, jars, &c. comprises a number of clips adapted to straddle the edges of the flanges and a flexible contractible band encircling the clips and adapted when drawn up to apply an equally distributed radial pressure to the clips. In the construction shown in Figs. 2 and 3, the clips 1 are formed in a continuous flexible band 3 by stamping out suitably shaped openings 2 to fit over the flanges or abutting members, the band being bent to wavy form and provided with lugs to embrace the contractible encircling band 4. A pivoted lever 7 is employed to draw up the band 4, and a washer may be interposed between the flanges &c. In a second construction, Figs. 4 and 6, a number of separate clips 14, maintained in spaced relation by small springs 19 and formed with V-shaped openings 15 to straddle the bevelled flanges or abutting members, is employed, each clip being provided with projections 24 to retain the contractible band 4, which may be tightened by a screw-and-nut device 26, 27, 28. Fig. 8 shows a modification in which the bevelled flanges 17 are of uniform thickness and a tapering washer 11 having a reinforcing wire 31 is interposed between the flanges, and the band 4 is formed with serrated' teeth 33 adapted to be turned down over the edges of the clips 14. The same Figure also shows the method of applying a closure 30 to the end of a pipe or cylinder. The washer 11 may be shaped with a projection 11<a>, Fig. 10, extending beyond the flanges and adapted to be compressed on the outer surface of the flanges by the clips 14. In attaching a lid or cover 41 with a plane outer surface, Fig. 18, to a cylinder or household article such as a jar 40, one face 44 only of the clips 14 need be bevelled, and the contractible band may take the form of a wire, cord or string located in grooves 46 in the clips. The ends of the band 4 may be fastened together by forming them with V-shaped slots 35 and projecting teeth 36, the teeth 36 on one end being passed through the slots on the other end and then turned backwards and hammered down.
Patent GB-934020-A (GB)
Title: Threaded anchorage and method of making same
IPC: B21K1/56
Filed: 1962-02-16
Abstract: 934,020. Making nuts and screw sockets; corrugating; jointing. GENERAL AMERICAN TRANSPORTATION CORPORATION. Feb. 16, 1962 [March 24, 1961],No. 6021/62. Classes 83 (2) and 83 (4). [Also in Group XXV] A method of producing a threaded anchorage in a workpiece 21 formed of relatively soft compressible solid material, e.g. aluminium alloy, comprises providing a bore 23 in said workpiece, providing a ferrule 31 formed of relatively hard material, e.g. low carbon steel, securing said ferrule in place in said bore, and subjecting the interior surface of said ferrule to swage pressure with an extremely hard threadswaging member, e.g. a fluteless tap 60 or thread-swaging screw 70, so as simultaneously to swage an internal thread 33 upon the interior surface of the ferrule and to swage an external thread-like structure 32 upon the exterior surface of the ferrule and to compress an internal thread-like structure 22 upon said workpiece 21 interiorly of said bore 23, wherein said threadlike structures 22, 32 are complementary and disposed in interlocked frictional engagement with each other so as securely to anchor said ferrule in place in said bore, said internal thread 33 being adapted to receive and to engage a cooperating external thread 54 carried upon the shank of a screw 51 or the like. The ferrule 31 is a force fit in the bore 23. A ferrule 31b, Fig. 4 has a flange 35a crimped in a counter recess by a tool 36. A ferrule 31c, Fig. 5, has a serrated flange 37 and a ferrule 31d, Fig. 8, a lip 38. A ferrule 31e, Fig. 10, is secured in position by epoxy resin cement 39. The tap 60, Fig. 11, has threaded radially relieved portions spaced at 120 degrees about its circumference. The screw 70, Fig. 12, is of polygonal cross-section and may have four rounded corners. A nut 120, Figs. 15, 16, of phenolformaldehyde resin, has an insert 131 threaded therein as described above. The material of the workpiece may be aluminium, magnesium, titanium, zinc, copper, brass, bronze, malleable iron, phenolformaldehyde resin, methylmethacrylate resin and the ferrule may be of steel, low carbon and stainless, brass, bronze.
Patent GB-165503-A (GB)
Title: Improvements in car unloaders
IPC: B65G67/00
Filed: 1920-02-28
Abstract: 165,503. Richardson, H. Feb. 28, 1920. Tipping - apparatus.-A car dooropener, for operation with a tipping- apparatus, comprises a door-opening member 7, Fig. 2, operated by links connected to the car support, and pivoted sweeping-out flaps 25, 26, Fig. 4, on the face of the member, and connected therewith by links operated by fluid pressure. The tilting-apparatus tilts about an axis 4, and carries plates 6 to which levers 12 and 21 are pivoted. The member 7 is operated by the links 15, 9, 12, and 21, and a link 18 pivoted at 19 to the framework. The door-opening member carries a plate 28 on which levers 38, 34, and the flaps 25, 26 are pivoted. The flaps are operated by the links 34, 38, and 31 actuated by the fluid pressure cylinder 36 and piston 40 which are operated by means of supply and exhaust pipes 41 and control valves 44. Specification 160,998 is referred to.
Patent GB-123220-A (GB)
Title: Improvements relating to the Electrical Operation of Liquid Recording and Reproducing Instruments.
Inventor: WILLIAMS LLOYD
IPC: H04N1/034
Filed: 1918-04-09
Abstract: 123,220. Williams, L. April 9, 1918. Copying documents, drawings, and the like.- In an apparatus adapted to reproduce drawings or photographs, the marking fluid is contained in a well having a fine outlet and into which an electrode dips. The well and the electrode are connected to an electric circuit and the arrangement is such that when a current passes between the electrode and the well the fluid is expelled to indicate the passage of the current. When applied to reproduce drawings made with a conducting line, the drawing is placed upon a drum which revolves synchronously with the drum upon which the drawing is to be reproduced and two adjustable contacts are caused to move axially along the drum, the circuit being made when the contacts are bridged by the conducting line. In the arrangement shown in Fig. 3, the drawing to be reproduced is placed upon a drum 4<A> mounted upon a revolving shaft 4<B>. The shaft 4<A> also carries a second drum 4, upon which the drawing is to be reproduced. A slide-rest 5 moved axially by a shaft 6 carries a pair of adjustable contacts 14, which, as they pass over the paper drum, are bridged by the conducting lines of the drawing to close the secondary circuit of an induction coil 9, Fig. 2. The secondary circuit of the coil 9 contains an electrode 21 insulated, except at its lower end, by a sleeve 20 and fluid well 19 provided with a fine outlet so-arranged that when an electric current passes between the electrode 21 and the well 19 the fluid is expelled. The induction coil 9 and its associated battery 12 may be replaced by a high frequency alternating current source. The circuit of the contacts 14 may be shunted by a condenser 11 and an inductance 10 in order that the apparatus may reproduce clearly smudged drawings. The scale of the reproduced may be varied by the use of a pantograph.
Patent GB-627419-A (GB)
Title: Improvements relating to fuel-systems for internal combustion engines
IPC: F02C7/22
Filed: 1947-03-03
Abstract: 627,419. Fluid pressure servomotor control systems. MORLEY, C. G. March 3, 1947, No. 6061. [Class 135] [Also in Groups XXVI and XXVII] In a fuel supply system for a gas turbine plant comprising two or more pumps with a common delivery, each having a hydraulic regulating device subject to a common hydraulic control, means is provided for isolating any pump of which the. regulating pressure fails. Two swash-plate type pumps 16, 17 deliver to a fuel pipe 28 leading to a throttle valve 29 and a stop valve 13. The pressure on the spring-biassed side of the piston 34 in each regulating device is determined normally by the leakage past a diaphragm-operated valve 46 in the device and by the leakage past a diaphragm operated valve 41 of a common control 43. In the latter the leak valve 41 is controlled by an atmospheric pressure capsule and the pressure in the common delivery pipe 28, acting upon a piston 39. If the pressure behind the piston 34 of either pump fails, fuel from the other pump will flow from one pipe 44a to the other and carry a valve ball 52 on to one of its seatings where it will be held by the fluid pressure and will isolate the pump that has failed. Specifications 577,016 and 583,487 are referred to.
Patent GB-381832-A (GB)
Title: Improved device for protecting conduits for explosive gas mixtures
IPC: A62C4/02
Filed: 1932-02-29
Abstract: 381,832. Preventing fires. DIEDERIX, E. E. J. and VLESSING, S., (trading as VLESSING & CO.), 60, Koninginnegracht, The Hague. Feb. 29, 1932, No. 6066. Convention date, March 2, 1931. [Class 47 (ii).] Gas conduits are protected against damage from back fires by providing in the conduit a chamber 1 containing a fireclay or similar porous body 4 covered with mercury 5. An additional porous body 6 may be provided above the mercury to prevent the mercury from being carried along with the gas. The porous bodies may be encased with or reinforced by perforated metal. Non-return valves 8, 10 may be provided at the inlet and outlet to the chamber.
Patent GB-1448957-A (GB)
Title: Audio signal mixing apparatus
IPC: H04S1/00
Filed: 1974-02-11
Abstract: 1448957 Stereophonic mixing circuit SONY CORP 11 Feb 1974 [12 Feb 1973 06076/74 Heading H4R In a stereophonic system signals of common phase in the two channels, such as might be produced by a centre stage singer, are removed from one of the stereophonic channels and replaced by an additional signal, e.g. from a microphone or derived from the removed signal after delay or the addition of reverberation. The arrangement allows a live voice to sing a duet with a recorded singer, or a solo voice to be turned into a duet. As described, Fig. 1, the L and R signals from a stereo record la are applied via equalizer amplifiers 2 to transistor phase splitters 3. The uninverted outputs of the phase splitters 3 are applied to the reproducer channels 8, 9, while the inverted outputs are combined and fed to the slider of a potentiometer 51 connected to the reproducer channels so that a proportion of the added inverted signal is mixed with the L and R signals. With the slider of potentiometer 51 at the top a signal -(L+R)/2 is applied to the channel carrying the L signal, with the result that the signal which is the same in both channels, e.g. arising from a centre stage singer, is cancelled in the left reproducer channel. At the same time the signal from a microphone 6 is fed to the slider of a second potentiometer 52 connected between the channels and with the slider at the top the signal from the microphone is fed primarily into the left channel to replace the cancelled signal. Ganged movement of the potentiometer sliders causes the apparent position of an original centre stage singer and the additional signal from microphone 6 to interchange between the two reproducers. A delay or reverberation unit 10 can be included in the signal channel from the microphone 6. In an alternative system Fig. 2 (not shown) the additional signal is derived by adding the left and right channels together and passing the resulting signal through a voice frequency filter (115) and a delay or reverberation unit (116) to the slider of potentiometer (152), with additional voice frequency filters (105) in the feeds to the slider of potentiometer (151), and operational amplifiers (108) are used in the adding circuits in the L and R channels.
Patent GB-608688-A (GB)
Title: Improvements in or relating to means for the suspension of a perambulator body
IPC: B62B9/18
Filed: 1946-02-27
Abstract: 608,688. Perambulator suspensions. WIL. SON & SONS, Ltd., W., and WILSON, W. N. Feb. 27, 1946, No. 6110. [Class 108 (ii)] In the perambulator body suspension of the type comprising rods 5 passing transversely through the body 1, self-lubricating bearings are provided on the rods for the looped straps 4 or other suspension means. Between the strap 4 and rod 5 are mounted an inner bush 8 of oil-impregnated self-lubricating material and an outer bush 7 which is of brass or similar material and may be in two or more sections; the outer surface of the bush 7 may be knurled to grip the straps. The bearing members are retained in position by a spring 9 and cupshaped member 10 on the side adjacent to the body 1, and by a washer 11 and a capnut 12 on the outer end of the rod 5. The other end of the looped strap 4 is connected to the perambulator spring 2, by a link 6, the pins 13, 14 of which may be provided with similar self-lubricating bearings.
Patent GB-652240-A (GB)
Title: Improvements in or relating to circuit arrangements for use on ultra-high frequencies
IPC: H03F3/54
Filed: 1947-03-04
Abstract: 652,240. Cathode-ray tubes; thermionic valves. RADIO CORPORATION OF AMERICA. March 4, 1947, No. 6190. Convention date, March 18, 1946. [Class 39 (i)] [Also in Group XL (c)] The input and output resonant circuits of a grounded grid amplifier are coupled by a line having an electrical length of an odd number of half-wavelengths in order to neutralize at least in part the feed-back through the anodecathode capacitance. In Fig. 6, the cathode and anode circuits are tuned by ¥-wave coaxial resonators 14, 16 and 9, 11 having adjustable shorting discs 19 and 17. The control grid is connected to a grid disc 12 which may be insulated for direct currents from the outer conductor of the resonators (Fig. 2, not shown), and the screen grid is decoupled by capacitors 40 connected to the grid disc and connected through a line 41 to the H.T. source. The neutralizing is effected by half-wave probes 29 extending through the common wall into each resonator and which may be connected at their ends by wire rings. Input and output coupling loops are provided at current nodes. The neutralizing line may alternatively be a halfwave coaxial line external to the resonators and having the ends of its inner conductor extending into each resonator. In a more compact arrangement (Fig. 4), the two resonators are arranged one outside the other with loaded half-wave probes 29<SP>1</SP> extending through the common wall. The probes may be H-shaped or in the form of a U or Z. Either the anode (as illustrated), or the cathode (Fig. 5, not shown), may be connected to the outside resonator. The Specification as open to inspection under Sect. 91 also describes a velocity modulation valve 50 (Fig. 8, Cancelled), having a control grid 45, a focusing electrode 46, accelerating electrodes 47 and an anode 48, surrounded by two adjacent apertured resonators 42, 43 and a focusing coil 42. Undesired coupling between these resonators is neutralized by a loaded half-wave probe 291 passing through the common wall. This subject-matter does not appear in the Specification as accepted.
Patent GB-100407-A (GB)
Title: Improvements in Control Systems for Electric Motors.
IPC: B60L7/12
Filed: 1916-05-02
Abstract: 100,407. British Westinghouse Electric & Manufacturing Co., (Assignees of Hellmund, R. E., and Ferris, R. E.). May 4, 1915, [Convention date]. Void [Published under Sect. 91 of the Act]. Systems for continuous. current motors only.-For regenerative running, a motor armature 3 is con. nected in series with an adjustable resistance E across the supply mains 1 2. The resistance is shunted by the field wind ing 4 and a constant voltage machine 6 in such a manner that the motor armature current and the motor field current traverse the resistance in the same direction. The machine E is shown as the generator winding of a dynamotor with a motor winding 5 and a field coil 7. If the regenerated current increases, the voltage drop on the resistance 8 increases and the current in the field winding 4 is therefore reduced, so that the system tends to keep the regenerated current constant. The connexions shown may be employed during the acceleration period of the motor. In a modification, a battery is employed in place of the dynamotor.
Patent GB-1144285-A (GB)
Title: Improvements in and relating to magnetic materials and devices
Inventor: CHIBA HIROYUKI
IPC: H01F1/37
Filed: 1967-02-09
Abstract: 1,144,285. Ferrite to glass slats. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 9 Feb., 1967, No. 6298/67. Heading C1M. [Also in Divisions G5 and H1] In a process for uniting two sintered ferrite bodies with glass, faces 20 and 21 of both bodies are first lapped and polished, a spacer strip 22 of Ti is deposited on one of the bodies, the two bodies are assembled together, glass fibres 18, 19 (e.g. 0À1-0À5 mm. in diameter) are placed as shown, and the assembly is heated in N 2  e.g. at 750‹ C or 900‹ C., to melt the glass which fills the gaps between the adjacent faces. Suitable glass compositions are (in % by wt.):- (a) (b) (c) SiO 2  .. .. . 22À5 56À2 70À9 Na 2 O .. .. . 21À0 7À6 16À4 K 2 O .. .. . 4À5 1À0 PbO .. .. . 30À0 Al 2 O 3  .. .. . 1À2 0À5 Sb 2 O 3  .. .. . 0À3 0À3 MnO .. .. 0À2 CaO .. .. 5À0 BaO .. .. . 2À0 MgO .. .. 3À9 B 2 O 3  .. .. 56-5