baber/WOPTO huggingface dataset:
Patent GB-529167-A (GB)
Title: Improvements in the electrical production of musical tones
IPC: G10H1/08
Filed: 1939-04-13
Abstract: 529,167. Electrical musical instruments. MIDGLEY, A. H., and MIDGLEY, A. M. April 13, 1939, No. 11181. [Class 88 (ii)] In electrical musical instruments of the kind wherein electrical vibrations or an undulating potential of controlled frequency and wave form are produced electrostatically and converted into sound waves, two sets of generators are provided, one for producing pure sine-form undulating potentials and the other for producing undulating potentials rich in harmonics, and a key relay and a stop relay are furnished for each of such sets of generators. Means are also provided for charging the generators from two or more sections of the same keyboard so that the tone quality playable on one section may be distinct from that playable on the others. As shown, two sets of generators, each of the character described in Specification 501,520, generate the same six octaves of the musical scale, but the rotors a of one set produce undulating potentials of pure sine-wave form whereas the other rotors a<SP>1</SP>, owing to the stationary members being of truncated, square-topped or saw-tooth wave form, produce undulating potentials which are rich in natural or pure harmonics. There are two key relays A, B operated from a single keyboard and two stop relays C, D operated by a single row of stops ; and the bus-bars of each key relay are divided into sections A<SP>1</SP>, A<SP>2</SP>, A<SP>3</SP> and B\ B<SP>2</SP>, B3 for the lowest octave, the next two octaves and the three treble octaves respectively, the bus-bars of each stop relay being also divided into sections C<SP>1</SP>, C<SP>2</SP>, C<SP>3</SP> and D<SP>1</SP>, D<SP>2</SP>, D<SP>3</SP> connected each to a section of the key relay. A switch or coupler is arranged between adjacent sections of the stop bus-bars to disconnect the bus-bar resistances of sections D\ D<SP>2</SP> to earth and to couple one section to the next. Each rotor a is combined with condensers e, h, resistances g, i, o, a switch s<SP>2</SP> and a two-way switch s<SP>1</SP> so that the attack and delay may be varied as desired. Each key resistance k is connected to a switch l and to one terminal of a condenser n, the other terminals of all these condensers n being connected together and to the switch s'. Specifications 454,720, 482,284 and 498,128 also are referred to.
Patent GB-720927-A (GB)
Title: Electric clutch-brake motor
IPC: H02K7/112
Filed: 1953-04-23
Abstract: 720,927. Motor driving arrangements. SINGER MANUFACTURING CO. April 23, 1953 [May 1, 1952], No. 11187/53. Class 35. An electric clutch-brake motor has a clutch and brake adjusting device comprising a plug 48 threaded into the end bell 12 and a bearing cup 41 which is yieldably engaged with the plug 48, so that when the latter is turned the cup and consequently the rotor shaft 34 are moved axially thus adjusting the clutch and brake clearance. Figs. 3, 4 show the plug 48 and the bearing cup 41 having ridged and grooved contact surfaces respectively. The ridges 50 of the plug 48 and the grooves 47 of the cup 41 are yieldingly held in engagement by a spring 55 and a pin 51, (Fig. 1), and function as a detent device to hold the plug 48 in position at the end of each quarter of a revolution. The bearing cup 41 carries the shaft 34 and, as the latter carries the clutch element 32, the clearance between this clutch element and the corresponding clutch element 30 is adjusted according to the movement of the shaft 34. One end of the shaft 34 is journalled in a driven shaft 21 which is in turn journalled in a bearing 18 the outer race of which is carried by a non-rotatably but axially shiftable sleeve 17. The shaft 21 carries a hub 23 on which is rigidly mounted a disc 25 carrying a brake element 29 (to engage a fixed brake element 31) and a clutch element 30 to engage the face 32 of the rotor flywheel 33. A lever 67 is provided to shift the sleeve 17, shaft 21, hub 23 and the disc 25.
Patent GB-383623-A (GB)
Title: Improvements in or relating to hydraulic shock absorbers
IPC: F16F9/14
Filed: 1931-04-15
Abstract: 383,623. Shock-absorbers. ETABLISSEMENTS M. HOUDAILLE, 50, Rue Raspail, Levallois-Perret, Seine, France. April 15, 1931, No. 11211. Convention date, April 17, 1930. [Class 108 (iii).] A hydraulic shock-absorber of the oscillatoryvane type is provided with radial conduits 18 in the wall 1b separating the working chamber 1 from a compensation recovery chamber formed by a cover 7, the conduits 18 extending, preferably opposite a groove 20, from an axial bore in which the central cylindrical part 2 carrying the movable vanes 3 fits. The conduits 18 are provided with studs 21 having capillary openings to allow the escape of air and excess liquid escapes through a passage 23 to the recovery chamber. The working chamber 1 is closed by a screw cover 4 having a recess 6 for the reception of the lower end of the part 2, and the fixed partitions in the chamber 1 are secured by studs 16 pressing against their upper face and preferably electrically welded. Adjustment is effected by a needle valve 27.
Patent GB-115981-A (GB)
Title: Improvements in Slide Rules.
IPC: G06G1/04
Filed: 1917-08-07
Abstract: 115,981. Davis & Son, J., and Davis, W. H. Aug. 7, 1917. Slide-rules.-The tightness of the slide is adjusted by cross-plates 7 having inwardly-turned ends, with which engage screws 8 passing through the body of the rule.
Patent GB-927249-A (GB)
Title: Metallurgical furnace roof
IPC: F27D1/00
Filed: 1962-03-26
Abstract: 927,249. Furnace roofs. HARBISONWALKER REFRACTORIES CO. March 26, 1962 [April 5, 1961], No. 11394/62. Class 51(2). A metallurgical furnace roof comprises basic refractory bricks A, Fig. 1, sprung between skewbacks 4 and 6, burned bricks B and unburned bricks U being arranged in checkerboard fashion so that each type of brick is only in side contact with the other type. With this arrangement, Fig. 2, bricks 21, 23, 29 and 31 may be of burned chrome, bricks 22, 24, 30 and 32 may be of unburned chrome-magnesia, bricks 25, 27, 33 and 35 may be of unburned magnesia-chrome, and bricks 26, 28, 34 and 36 may be of burned magnesia. The bricks may be metal cased or have metal inserts and may be assembled with spacer plates or in suspended roofs.
Patent GB-1196338-A (GB)
Title: Gas Burner
Inventor: ROTHHAAR CHARLES W
IPC: F23D14/34
Filed: 1968-03-08
Abstract: 1,196,338. Gas burners. MAXON PREMIX BURNER CO. Inc. 8 March, 1968 [13 Dec., 1967], No. 11520/68. Heading F4T. A gas burner includes a fuel conduit 72 and a pair of burner faces 74, 74 inclined with respect to one another to include an angle between 80 and 100 degrees, ports 76, 78 provided normal to the faces being staggered relative to those of the other face to provide an interlaced flame pattern. Counterbore depressions 80 around the ports sustain ignition of the main jets.
Patent GB-881715-A (GB)
Title: Audible warning device, especially for automotive vehicles
IPC: G10K13/00
Filed: 1959-04-07
Abstract: 881,715. Diaphragm horns. SWF-SPEZIALFABRIK FUER AUTOZUBEHOER G.RAU G.m.b.H. April 7, 1959 [April 10, 1958], No. 11678/59. Class 13. [Also in Group XXXIX] A motor horn diaphragm 6, Figs. 1, 2, is vibrated by an armature 4 which co-operates with an electromagnet 2, 3, the diaphragm comprising a centre 31, an outer annulus 32 for securing to the housing, spokes 33 interconnecting the centre 31 with the annulus and four tongues 61, 62, &c., for vibration relative to the spokes. The diaphragm may have two tongues only, Figs. 3, 4, not shown. A synthetic foil 10 protects the outer face of the diaphragm. Specification 849,999 is referred to.
Patent GB-972746-A (GB)
Title: Method and apparatus for thickening a suspension
IPC: B01D1/00
Filed: 1963-03-25
Abstract: 972,746. Thickening suspensions. BAHCO A.B. March 25, 1963 [March 26, 1962], No. 11725/63. Heading B1D. Liquid from suspension in a chamber 3, Fig. 1, is forced past a clearance 8 between a resilient membrane 2 and a wall 1 either by pressure in the suspension space or by movement of the membrane 2 into the suspension space (chamber 3). Alternatively, membrane 2 may be rigid and wall 1 resilient. A rubber diaphragm 33, Fig. 3, between supporting plates 34, 35, is hydraulically moved into an extension 32, thickened suspension thereby being collected between diaphragm 33 and a rotatable flap 37, and liquid thereby being forced above diaphragm 33 back into a vessel 31. Fig. 5 shows a double-acting piston with an inlet hopper 51 and outlets 53 and 54 for thickened suspension. In Fig. 6 (not shown), a rectangular membrane pivoted about one (horizontal) edge sweeps the wall of a horizontal half-cylinder whose axis coincides with the pivot. A top inlet and bottom outlet are provided. In Fig. 7 (not shown), part of one vertical wall of a vessel is replaced by a resilient membrane adjacent the walls of an extension. When suspension is introduced under pressure, liquid leaks into the extension. Slots in the membrane are also provided, and are almost wholly occupied by plates arranged edgewise, to accomplish the effect above-described. In all cases, the gap between the membrane member and wall member may appear only upon application of the working pressure.
Patent GB-642215-A (GB)
Title: Improvements in and relating to gas turbine plant
Inventor: WELSH ROBERT JAMES
IPC: F02C7/30
Filed: 1948-04-29
Abstract: 642,215. Gas turbine plant. ENGLISH ELECTRIC CO., Ltd. April 29, 1948, No. 11739. [Class 110(iii)] [Also in Group II] In a combustion product gas turbine plant a substance likely to condense and deposit in the turbine is separated out in a centrifugal or other settling chamber in which the working-fluid is brought to, or below, the dew point of that substance. Preferably the working fluid enters the chamber at a temperature 10‹C above the dew point and is cooled in the chamber to 10‹C below the dew point. Substances with different dew points may be separated out in two or more chambers arranged in series. The cooling may be effected by a spray of seawater and admixture with cooler air. Hot gases pass from a combustion chamber 3 to a cooling and separating chamber 5 before passing to the turbine 6. The gases on their way to the chamber 5 traverse one pass of a heat-exchanger 4 and on their way from that chamber traverse the other path of the exchanger 4. The air supply from the compressor 1 to the combustion chamber passes through a heat exchanger 2 heated by exhaust gases from the turbine. A branch pipe 7 supplies the cooling air to the separator 5. This pipe is fitted with a control valve 7c and a cross-connection to the outlet pipe from the combustion chamber is fitted with a valve 8. A sea-water connection 19 is fitted to the separator.
Patent GB-577453-A (GB)
Title: Improvements in and relating to amplifiers for electric wave signals
IPC: G06G7/20
Filed: 1939-04-19
Abstract: 577,453. Directive wireless signalling. ROBINSON, J. April 19, 1939, Nos. 11822/39 and 5566/40. [Class 40 (v)] In a directional receiving system, the signals from two or more aerials are combined in a " mixer " valve or other non-linear device to give a resultant of harmonic frequency which varies in amplitude or phase with the direction of the incoming signals, the resultant being fed back to the aerial to influence the operation of an associated indicating device. The arrangement is designed to increase the normal directive effect, to cut out interfering signals even of the same frequency, and to provide automatic volume control. The aerials may include a frame aerial or a spaced array, and one aerial may be more directional than the other. As shown in Fig. 1, signals from a non-directive aerial 20 and a directive aerial 21 are combined, after amplification at 23 and 24, in a frequencychanger 22. For feed-back purposes the output from the latter is proportional in amplitude to the product of the two input signals, and of double their frequency, if both signals are alike. The output frequency may be restored to its original value by feeding signals from a third aerial 25 to a frequency changer 26, together with the output from the frequency changer 22, the resultant then being fed back to the amplifier 23 of the aerial 20. The phase of the feed-back will vary with the orientation of the frame aerial 21. The directional indicator 27 is connected to the aerial 20. Instead of using a third aerial 25, the feed-back frequency may be restored to its original value by the rectifying action of the valves 22 or 23. If the aerial 21 is uni-directional and no change of phase occurs, the feed-back then varies only in amplitude with the direction of the connecting signal, to give increased directional sensitivity. With a frame aerial, the feed-back will vary not only in amplitude but also in phase as the frame is rotated, so that positive or negative feed-back can be applied according to the direction of the incoming signals, the negative feed-back serving to eliminate undesired signals. The original frequency for feed-back purposes may also be obtained by distorting the signal from each receiver, so as to obtain harmonics, which are then recombined to produce the fundamental (Figs. 2 and 3, not shown). Specification 577,455 is referred to.
Patent GB-1391058-A (GB)
Title: Method and apparatus for measuring the length of elongate features having a substantially common orientation employing line scanning
IPC: G06F3/00
Filed: 1971-04-28
Abstract: 1391058 Measuring length of inclusions in steel specimens photo-electrically IMAGE ANALYSING COMPUTERS Ltd 21 April 1972 [28 April 1971] 11822/71 Heading G1A The total length of oxide inclusion stringers in a polished steel specimen (which are generally parallel) is measured by scanning the specimen in a series of mutally parallel equally spaced lines substantially perpendicular to the stringers to produce a video signal thereof, counting the number of pulses N resulting from intersecting the stringers, counting the number of strings n and deriving the average length of stringer by dividing N by n. The pulses relating to a particular stringer may be isolated using a light pen.
Patent GB-1493387-A (GB)
Title: Anaesthetic inflation valves
IPC: A61M16/20
Filed: 1975-04-28
Abstract: 1493387 Respiratory apparatus W JONES 28 April 1975 [18 March 1974] 11849/74 Heading A5T [ Also in Division F2]  An inflation valve for respiratory apparatus, comprises a first inlet valve 8 having a valve member 11 mounted on a common rod 14  with outlet valve member 29, a spring. 34 which biases outlet member 29 open and the first valve 8 closed against inlet gas pressure in space 16, a control element 45 for adjusting the pressure exerted by spring 34 and a second inlet valve 9, biassed to a closed position by a spring 53 and the inlet gas pressure, and openable by engagement of second valve rod 20 with cam groove 51 of control element 45 whereby in a given position of control element 45 the second inlet valve 9 is held open to provide a by-pass for the first inlet valve 8 if spontaneous breathing is required, the patient directly inhaling gas mixture flowing from inlet passage 3. The pressure in spaces 17 and 27 and spring 34 hold the first inlet valve 8 closed and the outlet valve 29, 31 open. With second inlet valve 9 closed first inlet valve 8 and outlet valve 29, 31 will open and close depending upon the pressure differential between spaces 16 and 17, a reservoir bag (not shown) being connected to a passage 4 in communication with space 16, whereby with a constant fresh gas flow through inlet 3 to the reservoir bag, the first inlet valve 8 and outlet valve 29, 30 will open and close to control the breathing of a patient. Flap valves 56 and 58 are provided to ensure the correct direction of gas flow in the event of spontaneous breathing. In a modified embodiment (not shown), flap valve 56 may be omitted. In an alternative inflation valve, (not shown), the face of the outlet valve member which engages the outlet valve seat may be exposed directly to the pressure in one of the spaces on each side of the first inlet valve.
Patent GB-476333-A (GB)
Title: An improved multiply sheet material suitable for use in buildings, furniture, and the like
IPC: E06B5/10
Filed: 1936-04-27
Abstract: 476,333. Compound sheet materials. BIDDLECOMBE, J. A., and BROCKBANK, W. A. April 27, 1936, No. 11990. [Class 140] [Also in Groups XXIII and XXV] Layers 1 of penetrable material such as wood or plywood and one or more intermediate layers 2 e.g. of metal, are held together by metal tiemembers 3 not extending beyond the surface of the outer layer and shaped so as to be bent over when forced into the wood &c. The tie-members may be of strip metal chiselled on only one surface at each end, the metal layer or layers being slotted as at 4 to accommodate them. Alternatively metal strips chiselled at one end may be integrally attached at their other ends to a metal plate. Two such metal plates having chiselled strips upstanding on one side may be combined, the strips of each plate passing through slots in the other into the outer wood &c. layer. When two metal plates are used, a layer of rubber, compressed fibrous material, asbestos, or cork may be located between them ; or one metal plate may be used between two such other layers. An adhesive may be used as well as the tie-members. The material is suitable for constructing buildings, boxes and crates. According to the Provisional Specification, the tie-members may be H-shaped, the ends of the arms of the H being chiselled on opposite surfaces so that they splay apart when forced into the wood.
Patent GB-1201543-A (GB)
Title: Method for marking or otherwise stamping
Inventor: GILCHRIST JAMES MONTGOMERY JR
IPC: B65B61/26
Filed: 1968-03-12
Abstract: 1,201,543. 543. Marking by irradiation. J.M. GILCHRIST. March 12, 1968 [March 13, 1967], No. 12033/68. Heading G2A. An article which is packed within an inner wrap and then an outer wrap (e.g. a carton of cigarettes) is marked (e.g. with a tax stamp) on the inner wrap by irradiation through a patterned plate or stencil. The outer wrap is transparent to the radiation, and is unaffected. If the radiation used is visible light, then the inner wrap is treated with a material responsive (e.g. by change of colour) to light energy. Other forms of irradiation may be used (e.g. ultraviolet or infrared light, heat, or ultrasonic energy), and the inner wrap is treated with a suitably responsive material. Fig. 1 shows an apparatus for carrying out the marking. The carton 9 is carried into position on a conveyer belt 14. On reaching the marking station, it trips controlling means for automatically pushing it up against the press plate 22 on which is patterned the required marking, and switching on the radiation source in the section 16 of the main housing 8, so that the carton is irradiated through the patterned plate 22. After a suitable exposure time, the carton is released and moved on. The housing 8 may be assembled with interchangeable sections devised to accommodate cartons of different shapes and sizes.
Patent GB-996321-A (GB)
Title: Liquid fuel injection pumps
Inventor: VOLOSSEVICH GEORGE
IPC: F02M59/42
Filed: 1962-03-29
Abstract: 996,321. Fuel-injection pumps. C.A.V. Ltd. March 15,1963 [March 29, 1962], No. 12044/62. Headings F1A and F1B. In a fuel injection pump comprising a piston 12 having a control groove 17 and angularly adjusted by a sleeve 19 having helical teeth engaged by a helically toothed rod 22, e.g. connected to a governor, sleeve 19 is spring- loaded into its excess delivery position for starting and has a piston face 32 at its upper end. The space 33 above the sleeve is connected to a cylinder groove 34 above a leakage groove 18. When the engine is running, leakage past piston 12 enters space 33 and moves sleeve 19 downwardly to its normal setting, as determined by rod 22. When the engine is stopped, the fuel in space 33 leaks into groove 18 and back to the pump inlet under the action of spring 31, so that sleeve 19 rises to its excess delivery position for starting. An adjustable stop is provided to determine the maximum delivery position of rod 22.
Patent GB-784170-A (GB)
Title: Improved insulation for electrical conductors
IPC: C09D127/06
Filed: 1955-04-26
Abstract: A composition suitable for insulating electrical conductors comprises polyvinyl chloride or a vinyl chloride-vinyl acetate copolymer and a plasticizer comprising pentaerythritol dibutyrate dicaprylate containing from 0.1 to 0.5 per cent hydroxyl, the plasticizer being present in an amount ranging from 30 to 70 per cent by weight of the vinyl chloride resin.  The composition may also contain a stabilizer such as lead monoxide, lead sesquioxide, red lead oxide, tribasic lead sulphate, tribasic lead silicate or a complex lead silicate-lead sulphate salt, and a filler such as carbon black, barytes, titanium dioxide or a clay.ALSO:Pentaerythritol dibutyrate dicaprylate containing from 0.1 to 0.5 per cent hydroxyl may be prepared by direct esterification of 1 mol. pentaerythritol with slightly less than 4 mols. of a mixture of butyric and caprylic acids, the mixture being employed in the necessary molar concentration to give the desired per cent hydroxyl.  Esterification catalysts such as phosphoric acid and triphenyl phosphite may be employed.
Patent GB-1144130-A (GB)
Title: Improvements in moulds and methods of casting
IPC: B22C1/16
Filed: 1966-03-21
Abstract: 1,144,130. Moulds for metals; "lost-wax" process. HOWMET CORP. 21 March, 1966 [22 March, 1965 (2)], No. 12323/66. Heading B5A. A mould for the precision casting of metals is produced by building up layers on a disposable pattern, each layer being built up by separate applications of a "dip coat composition" comprising an aqueous suspension of very fine particles of graphite or ceramic and a stucco of larger graphite or ceramic particles, the inner layers being of graphite, the remainder being graphite or ceramic and the layers immediately surrounding the cavity, e.g. the first one to four layers are impregnated with an organic, high molecular weight material, thermally decomposable to carbon, the mould being heated in a non-oxidizing atmosphere for such decomposition. The impregnation may be effected during the build-up of the layers or after removal of the pattern, using a liquid composition containing the organic material. The dip-coat composition may comprise an aqueous medium containing colloidal graphite and graphite flour, and the stucco may also be graphite. Examples of the organic materials may contain phenolformaldehyde resin, phenolic resin, furfuryl alcohol resin, or acrylic resin.
Patent GB-128659-A (GB)
Title: Improvements in Dopes or Varnishes used in Aeroplane Construction.
Inventor: GROVES SAMUEL ERNEST
IPC: C09D101/18
Filed: 1917-08-28
Abstract: 128,659. Groves, S. E., and Ward, T. W. H. Aug. 28, 1917. Varnishes.-A varnish for the planes of aircraft consists of a solution of cellulose ester in acetone &c. to which is added a hygroscopic substance such as chloride of zinc, calcium, magnesium, or tin, or a mixture of these chlorides. The chloride lowers the viscosity of the dope, so that a smaller quantity of solvent can be used, for instance 20 per cent. In one example, 1 to 5 per cent. of calcium chloride is added to a solution of celluloid in acetone, alcohol, and benzol. In another example, in which the dope contains 10 per cent. of celluloid, one or more of the above-mentioned chlorides are added in such a proportion that the mixture contains from ¢ to 1 per cent. of combined chlorine. In another example, a mixture in molecular proportions of calcium chloride and zinc chloride dissolved in alcohol is addled to the dope, the solution having being first neutralized by being boiled with zinc.