baber/WOPTO huggingface dataset:
Patent GB-244129-A (GB)
Title: Process for the manufacture of pianos
IPC: G10C1/00
Filed: 1925-12-07
Abstract: 244,129. Maugendre, A. M. E. Dec. 5, 1924, [Convention date]. Void [Published under Seet. 91 of the Act]. Pianoforte, framing; cases; soundboards; bridges; pressure-bars etc; wrest-planks; actions. -Methods of constructing grand and upright pianofortes are described in which the metal frame carrying the soundboard, wrest-plank and wires is introduced into the casing and secured without adjustment being necessary, the frame and soundboard being readily detachable. The metal frame 1 of a grand piano, which can be utilized direct from the foundry without machining, has a peripheral rib 3, and strengthening bars 4, 5. The bar 4 is parallel to the lowest of the wires 10 and is slotted at 22 to allow passage of the bass wires 11. The soundboard 6 is attached by screws 8, whose heads lie in the frame and which pass also into a wooden frame 9. The wrest-plank is attached by screws 16. A pressure bar 18 with hollowed under surface pressed on the wires near the wrest-plank, acting as a bridge and also pressing the ends of the wires into a piece of felt 21 so as to prevent parasitic vibrations. A flexible bar 17 is adjusted on the inclined surface 13<1> of the metal frame near the hitch-pins under the wires to adjust the inclination and pressure of the wires with respect to the soundboard bridge. The casing consists of a keybed 25 with cheeks 28, mounted in a rim 30 having brackets 32 which support the metal frame carrying the soundboard and wires. Packing pieces 38 may be interposed between the rim 30 and the metal frame 1, and the latter secured by screws 39. The metal frame mav be modified by the addition of lugs and secured in various ways with the aid of screws. The make-up of an upright pianoforte in a similar way is described. In this case the metal frame may have inclined faces round the periphery, to facilitate insertion of the packing-pieces. Attachments by means of angle irons, without packing-pieces, are also shown. Fig. 17 shows a bracket 81 for supporting the upright action on pins 79, 80 projecting from the metal frame, the bracket being forked at 82 and being secured by a nut 83.
Patent GB-1237746-A (GB)
Title: Continuous molding of thermoplastic materials
IPC: B29C48/13
Filed: 1968-06-28
Abstract: 1,237,746. Continuous injection moulding. MONSANTO CO. 28 June, 1968 [3 July, 1967], No. 31022/68. Heading B5A. [Also in Division A4] Articles, e.g. artificial turf, ski-slopes &c. having a matrix and projections, are produced by injection moulding into cavities in a moving mould surface at a first pressure to form the projections and then across the face of the mould surface at a lower pressure to form the matrix integral with the projections. The mould surface may be a cylindrical drum 14, Figs. 2, 3, on surfaces of abutting flat plates (Figs. 10, 11, not shown), between two rotating cylindrical drums (Figs. 12-14, not shown) or between a rotating drum and the nozzle face (Figs. 18, 19, not shown). As shown in Figs. 2, 3, material is injected into cavities 34 having inserts 36 and closed from grooves 44 on drum 14 by extruder fingers 42. As the drum rotates, material is injected at a lower pressure into grooves 44 between fingers 42 and portions 40 on the drum. Longitudinal recesses 38 in inserts 36 form the projections. The product (Fig. 8, not shown) may be textured (as Fig. 9, not shown) to have a grass-like appearance. The drum 14 may be water-cooled; the product is stripped therefrom by means 34. In an alternative embodiment (Figs. 10, 11, not shown), plates (70) are abutted to form the mould, being removed from the product after moulding and recycled. Recesses (74) form the projections, being closed from grooves (78) by fingers (77). In the embodiment of Figs. 12-14 (not shown), one rotating drum (90) contains cavities (92) for the projections, and another drum (96) the grooves. Injection nozzle (A) operates at high pressure into cavities (92) and (B) at lower pressure into the grooves, fingers (106) preventing back flow. Nozzles (A, B) are both connected to source (102), (B) having a valve (104) to lower the injection pressure. Two rows of extruders (Figs. 15-17, not shown) may be used, one row operating at a different pressure to the other. In Figs. 18-20 (not shown), grooves (120) are formed in the nozzle face, injection being effected through (F) at low pressure due to valve (134), and through (E) at higher pressure to form the projections. The drums (Figs. 21, 22, not shown) may have T-shaped transverse grooves (140) to form the projections and circumferential grooves (142) to form the matrix (150).
Patent GB-230535-A (GB)
Title: Improved apparatus for trenching between rows of plants
IPC: E02F5/02
Filed: 1923-12-10
Abstract: 230,535. McLaren, H., and Herbert, L. Dec. 10. 1923. Multiple-tool and disc-tool machines; tools; travelling and propelling gear.-An implement for making trenches between rows of plants is provided with a longitudinal series of shares arranged to penetrate to gradually increasing depth, and with an upright post bearing laterally extending and depending arms carrying wheels or runners at their lower ends. The frame consists of two channel-irons 1 riveted together with distance pieces between them. At the front are two steering-wheels 6 having cutting-discs 7 on their inner sides. They are steered by means of a handle 9 which may be clamped in position by a clamp 30. A disc coulter 10 is provided to make a cut along the centre of the trench to be cut- The stems 15 of the shares 12 are wedged between the distance pieces separating the channel-irons 1. The first share is provided with mouldboards 11 and cuts to the same depth as the discs 7. The following shares cut successively to further depths equal to the depths cut by depending cutters 17 carried at the sides of the preceding share. Each share is narrower than the one in front of it. Behind the rear share is an inclined plate the edges of which remove the ridges left by the shares in the inclined sides of the trench. Behind the inclined plate are side and bottom plates 19. mouldboards 20, and horizontal plates 21 that bear on the ground. The weight may be taken by an adjustable wheel 22. The upright post 25 carries two arms 26 that extend laterally in opposite directions and are then bent down. wards to carry adjustable runners or wheels 28 that pass between the rows of plants. The traction cable is adjustably connected to a laterally adjustable swivelling attachment 31. The return cable is attached to one of she arms 26. The operator may stand on the horizontal plates 21. Specification 197,117 is referred to.
Patent GB-372695-A (GB)
Title: Improvements in or relating to electric roll type condensers
IPC: H01G4/38
Filed: 1931-11-09
Abstract: 372,695. Condensers. SIEMENSSCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Nov. 9, 1931, No. 31059. Convention date, Dec. 1, 1930. [Class 38 (ii).] Flattened wound condensers are connected in series by simple clamping in stack form, each element being wound so as to allow the electrodes 9, 10 to be exposed one on each flat side beyond the layer of dielectric.
Patent GB-360622-A (GB)
Title: Improvements relating to sheet piling
IPC: E02D5/76
Filed: 1930-10-17
Abstract: 360,622. Sheet piles. SCHROEDER, K., 2, Baumeriitrasse, Dortmund, Germany. Oct. 17, 1930, No. 31145. [Class 68 (ii).] Underwater r anchoring-device;, for sheet-pile walls are connected by attachment bolts to abutments in the walls; the bolts are inserted above water, and moved downwards to a position in engagement with the abutments under water. Fig. 1 shows a troughsection sheet-pile wall consisting of members a with converging flanges a<11> forming abutments between which are set members d secured by bolts and nuts c, c<1> to the reinforcement e. The bolts c extend downwards to the ground anchors. In a modification, the members a are Z-sectioned. In another modification, Fig. 3, the members a have divergent. flanges a<11>, and are provided with lateral lugs f, g with which the bridge members h engage when they are drawn in. by the parts c, d‹ ; similar bridges are used for bridging heels or like parts of Z- or trough-section pile walls. Anchoring-devices may be disposed on both sides of these walls.
Patent GB-1518503-A (GB)
Title: Liquid mixing gear pumps
IPC: B01F25/62
Filed: 1974-07-15
Abstract: 1518503 Liquid mixing externally-meshing gear-pumps IMPERIAL CHEMICAL INDUSTRIES Ltd 23 June 1975 [15 July 1974] 31154/74 Heading F1F [Also in Division B1] An externally-meshing gear-pump for mixing liquids comprises a groove 3, 4, 7, 8, in one axial end of each tooth 2 of both gear-wheels 1, 5, grooves in successive teeth being located at opposite end-faces. The grooves 3, 4, 7, 8 permit reverse flow during pump operation which improves the mixing characteristics. A three gearwheel embodiment is also described Figs. 2, 3 and 4, (not shown).
Patent GB-1378911-A (GB)
Title: Phase separator for liquid-liquid extractors
IPC: B01D17/02
Filed: 1972-07-04
Abstract: 1378911 Liquid/liquid separator METALLGESELLSCHAFT AG 4 July 1972 [21 July 1971] 31188/72 Addition to 1345046 Heading B1D In a phase separator for a liquid/liquid extractor, similar to that disclosed in Specification 1345046, weir 5 for the discharge of separated heavy phase is inclined as shown so that the phase is conducted away from the adjacent lower boxes so that it does not adversely affect the heavy phase discharge from the lower boxes. The mixture to be separated is introduced through troughs 1.
Patent GB-412104-A (GB)
Title: Chromatic harmonica with tone controls
IPC: G10D7/12
Filed: 1933-11-09
Abstract: 412,104. Month organs. MINEVITCH, B., Hotel St. Moritz, New York, U.S.A. Nov. 9, 1933, No. 31207. Convention date, Aug. 10. [Class 88 (ii).] A harmonica is provided with one or more open-sided metal cups 32 which communicate with the air-passages 2, 3, contain tremorproducing means, and are slidable along the rear edges of the harmonica for varying the tone of the notes. The tremor-producing means comprise free-ended metal spring-coils, wound fine as at 35 for treble and coarse, 34, for bass notes. The cups have struck-up tongues to grip side-plates 8. The wooden body 1 supports two sets of reed-plates 6, 7, either of which is selected by sliding a plate 18, Fig. 8, which has two rows 26, 29 of staggered openings adapted to register with rows 27 or 30, Fig. 4, of openings in plates 17, 19, Fig. 2, fixedly arranged above and below the plate 18, within a recess in the undersurface of the mouthpiece 14, which has large openings 32<a> including both rows. The plate 18 is normally pressed outwards by a blade-spring 25 so that the upper row 27 and the reeds 7 are effective, and is pressed inwards to render the row 30 and reeds 6 effective. One of two rows of numbers 1, 2, &c., stamped on the sliding-plate 18 and forming note-indicators, is displayed through the openings 32<a> according to the position of the plate 18. The side-plates 8 are hinged together at one end 26 and at their other end have apertures receiving pegs 38 on an inner-plate 39 secured by a screw 40 to the body. The plates diverge outwardly from the reeds and have lipguiding grooves 81. Elliptical finger-rings 12, which serve also as pocket-clips, are frictionally gripped in tongues struck-up from the sideplates.
Patent GB-383412-A (GB)
Title: Improvements in or relating to radio and other high frequency signalling systems
IPC: H03C3/04
Filed: 1931-11-11
Abstract: 383,412. Wireless transmitting and receiving systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Albersheim, W. ; 175, Riverside Drive, New York, U.S.A.) Nov. 11, 1931, No. 31257. [Class 40 (v).] In a frequency-modulated transmitter, accidental amplitude modulation is neutralized by applying intentional amplitude modulation of opposite phase. The frequency modulation is applied to a comparatively low-frequency carrier, which is afterwards raised to a suitable radiating frequency by heterodyning. At the receiving station the received carrier wave is similarly reduced in frequency before detection. As shown in Fig. 2, the back-coupled carrierwave generator 13 is frequency-modulated by a condenser microphone 15 or like instrument associated with its tuned circuit 14. The modulated wave is transferred to the aerial 10 through a coupling 11. An aperiodic detector 30 is coupled to the aerial circuit, and any amplitude modulation present in the aerial gives a rectified signal in the detector output circuit 32, which is amplified in the valve 40 and is transferred through a variable resistance 43 to the input transformer 42 of a valve 21 arranged for amplitude modulation of the wave generator 13. This neutralizes any accidental amplitude modulation of the carrier. Correct adjustment of the resistance 43 is indicated by the absence of signals from the monitoring telephones 41. For automatic monitoring, the phones 41 may be replaced by an impedance, the voltage across which varies the resistance of a valve which supplements or replaces the resistance 43. In another modification, Fig. 1 (not shown), the valves 30, 40 are omitted, and the neutralizing modulation is effected by a second microphone connected to the transformer 42 and affected by the same signals as the microphone 15. Fig. 3 shows such an arrangement with an additional microphone 22, but in this case the initial carrier frequency generated by the valve 13 is combined with a higher-frequency carrier generated by a crystalcontrolled oscillator. 50 and the sum frequency is passed through a band-pass filter to the aerial 10. At the receiver, Fig. 4, the received carrier is reduced in frequency by combination with a local oscillation generated by a crystal-controlled or other oscillator 70, and the lower resultant frequency is amplified by one or more valves 65. The lower frequency still carries its frequency modulation, which is converted into amplitude modulation by the tuned circuit 81 and is then detected in the usual manner.
Patent GB-417901-A (GB)
Title: Device for measuring periodical variations of fluid pressure
IPC: G01L23/06
Filed: 1933-11-09
Abstract: 417,901. Steam-engine and like indicators. SOC. ANON. HEWITTIC, and DEMONTVIGNIER, M., 11, Rue du Pont, Suresnes, and LABARTHE, A., 16, Rue St. Simon, Paris, both in France. Nov. 9, 1933, No. 31273. Convention date, Nov. 17, 1932. [Class 106 (ii).] The pressure fluid acts on one side of an elastic diaphragm the other side of which reflects a beam of light on to a photo-electric cell connected in circuit with a diagram producing apparatus such as a cathode ray oscillograph. A small pressure chamber 5 closed by a diaphragm 6 is screwed into the cylinder head of an explosion engine 1, 2, 3, 4. A parallel beam of light from a source 8 falls on a reflecting surface on the outer face of the diaphragm and is reflected on to a photo-electric cell 10 in front of which is a diaphragm screen 11 and which is connected in circuit with a storage battery 12 and a three cathode valve amplifier 13. The output of the amplifier is connected to the first pair of derivating plates 14 of a cathode oscillograph. Movements of the diaphragm 6 in response to pressure variations cause variations in the amount of light falling on the cell 10, and the spot of light oscillates along the axis 15 on the screen. The second pair of plates 16 give oscillations of the spot of light along the axis 17 and may be connected through a switch 18 to any of three voltage sources. The first varies according to time and is furnished by an alternator keyed to the shaft of the engine ; the second is from an alternator keyed to the engine shaft and so arranged as to give maximum and minimum points at dead centres of engine piston stroke ; the third voltage is obtained from a photoelectric cell 26 and amplifier 27 circuit, a light source 25 supplying a beam to the cell 26 in the path of which beam is a shutter 23 worked by a crank and connects rod 22 which is a small replica of the corresponding parts of the engine. The third source may be obtained in a different manner by using magnetic coils rotated by crank and connecting rod and located in a radial magnetic field similar to an electrodynamic loud-speaker.
Patent GB-644143-A (GB)
Title: Improvements relating to transporter apparatus
Inventor: TINDALE JOHN BASIL
IPC: E04G21/04
Filed: 1947-11-26
Abstract: 644,143. Overhead cranes; elevated railways. MINISTER OF WORKS. Nov. 26, 1947, No. 31333. [Classes 78 (iv) and 104 (ii)] Means for distributing wet concrete on building sites and for other purposes comprises a horizontal boom from which a container for the concrete or other material is suspended to be moved along it, the boom being pivotally suspended at one end from an arch-like or portal frame, and being supported at the other end in such a way that it can be moved about its pivot so that the container may be brought over any point in the area swept by the boom. As shown, the device is employed for laying concrete in the footings of a pair of semidetached houses, the skip being loaded from a concrete mixer 18 placed at the junction of the party wall and an outside wall. The steel or light alloy beam 1 of V-section tapering towards the ends is pivotally suspended at one end by means of a universal joint 9 from the middle of the cross member 10 of a portal frame 101 and is supported at the other end by pairs of legs 13, 14 which may be moved to turn the boom 1 about its pivot 9. The bottom rail 1<1> of the boom 1 is of inverted T-section, the flanges forming rails on which run the rollers of a carriage 2 supporting an inverted U- shaped yoke 3 by means of a chain. The yoke 3 supports horizontal trunnions on a skip 4, a hand wheel 5 being provided for turning the skip about its trunnions to tip it and a toggle-lever 7 being provided for opening a hinged bottom-discharge door 6. A hoist 8 enables the skip to be raised or lowered. The portal frame 10<1> comprises end frames 11, 12, each having a cross-bar 11<1> 12<1> secured to the bottom member of the V-section lattice cross member 10. Each pair of legs 13,14 is arranged in the form of a V, the upper ends being detachably pivoted to the boom 1 and the lower ends being secured and braced to members 15, 16 having threaded engagement with adjustable ground engaging feet 15<11>, 16<11>. Handles 15<1>, 161 are provided for moving the legs and the end of the boom. A two-wheeled trolley may be provided for supporting the feet 15<11>, 16<11>. The whole structure preferably dismantles into parts which may be handled by two men.
Patent GB-982699-A (GB)
Title: Means for measuring the radio-activity of aerosols
IPC: G01T7/04
Filed: 1962-08-15
Abstract: 982,699. Feeding sheets and webs. LANDIS & GYR A.G. Aug. 15, 1962 [Oct. 24, 1961], No. 31345/62. Heading B6B. [Also in Division G1] In a plant for monitoring the radio-activity of particles suspended in air the air is sucked through a filter strip to leave a deposit for investigation and the filter strip is carried at a uniform speed across the inlet of the air suction pump. To convey the filter strip without damage it is supported and advanced by means of a perforated conveyer belt mounted on two guide drums. The Figure shows the perforated belt 1 driven by a drum 3 having teeth 4 and passing round an idler drum 2. Close to the drum 2 is the inlet 5 to the suction pump 8. The filter paper passes from a supply reel 10 in contact with the belt along the top surface of the belt to a take-up reel 14 mounted on a spring-loaded arm 13 so as to be driven at the correct take-up speed by means of the belt as it passes over drum 3. A radiation detector 16 is mounted opposite inlet 5 and one or more further detectors 17 mounted at adjustable distances along the strip from it. To prevent leakage losses between the orifice and the belt and the belt and the filter strip a pressure frame 20 is mounted above the inlet 5. This frame can travel with the belt and strip and is raised intermittently and allowed to return to its original position. Preferably its displacement is small. The pressure frame is provided with a suction tube to prevent air sucked in contaminating the apparatus.
Patent GB-341484-A (GB)
Title: Process for the preservation and transport of seed in tropical and sub-tropical countries and under similar conditions
IPC: A01C1/00
Filed: 1929-10-16
Abstract: Grain and other vegetable seeds are dried in dry air or in vacuo, at a temperature of about 35 DEG  C., and are introduced into glass or metal containers holding only sufficient for a single sowing.  The containers are exhausted, and nitrogen, argon, krypton, neon, dry helium, or dry air is allowed to enter at any suitable pressure and the containers are hermetically sealed.  The seeds may be first subjected to an anti-parasitic and anti-cryptogamic treatment. Specification 2643/09, [Class 49, Food &c.], is referred to.
Patent GB-1116641-A (GB)
Title: Sealing device for rotary piston engines
IPC: F01C19/10
Filed: 1965-07-23
Abstract: 1,116,641. Rotary-piston engines. YANMAR DIESEL ENGINE CO. Ltd. July 23, 1965 [July 25, 1964], No.31490/65. Heading F1F. A sealing device in a rotary-piston engine of the trochoidal type in which a three or more-sided piston planetarily rotates within a housing having one less lobe than the piston has sides, comprises, at each piston apex, an axially-extending slot 5, Fig. 2, slidably mounting a support block having a centre portion 33 formed with a cut-out carrying a flexible resilient sealing strip 7 and end portions 31 firmly fixed to corner sealing bolts 13. A spring 11 urges the portion 33 radially outwards so that the strip 7 makes sliding contact over the inner peripheral surface of the housing and springs 15 urging the portions 31 and bolts 13 into sealing contact with the adjacent faces of the side portions 17 of the housing. This enables sealing between the piston and housing side portions to be effective at low operational speeds and allow any wear to be taken up. The strip 7 extends over the gaps between the centre portion and end portions to prevent leakage through the gaps. The centre portion 33 is preferably made hollow to reduce its weight and minimize impact forces.
Patent GB-537339-A (GB)
Title: Improvements in or relating to frame buildings
IPC: E04B1/04
Filed: 1939-12-07
Abstract: 537,339. Composite slabs. MAY & SON, Ltd., R., and EDWARDS, H. J. Dec. 7, 1939, Nos. 31683/39 and 1881/40. [Class 87 (i)] [Also in Group V] Units for forming frame buildings consist of tray-like members 1 ... 11 and 16 ... 23 cast or moulded from a compound of sawdust or the like and cementitious material, of such consistency that it can be nailed or shaped with ordinary carpenters' tools. Units of large size may be formed with transverse ribs 15 similar in section to the rims 12 of the trays. Apertures 14 for the securing bolts may be formed in the members, and window or door frames (unit 26) or the pintles therefor (unit 24) may be incorporated in them. The material from which the units are cast or moulded is prepared by saturating soft disintegrated wood such as sawdust, allowing the saturated material to remain in air for at least 24 hours, mixing with dry portland cement and ground lime in the proportions of two to six parts by bulk of the material to one Part of cement and threequarters lime, and finally gauging with 10 to 15 pounds per cubic foot of a 7.5 per cent. solution of calcium chloride. Coloured cements may be used.