baber/WOPTO huggingface dataset:
Patent GB-397127-A (GB)
Title: Improvements in and relating to reinforced concrete floors, roofs, walls, and the like
IPC: E04B5/29
Filed: 1931-11-16
Abstract: 397,127. Reinforced concrete ; walls &c. RIDLEY, M. N., 82, Harold Terrace, Burley, Leeds. Nov. 16, 1931, Nos. 31635/31, 1101/32, and 23370/32. [Class 20 (iv).] Hollow walls, floors, or roofs are formed of two or more sheets of metal, or meshed or expanded metal, having dovetailed corrugations and interconnected with separate bracing elements so as to form a permanent structure, or centring for a covering of concrete. The sheets may both be flat or curved in the direction of the corrugations, or one may be flat and the other curved. Figs. 1 and 2 are sections at right-angles of a pair of sheets 1, 2 having dovetailed corrugations 3, 4, and spaced apart by channel irons 18. Fig. 5 shows a structure in which the sheets 1, 2 are curved and are braced by cross members 27, 28, and the top sheet faced with concrete 30, hollow cavities 30a being formed by corrugated sheets 29. The structure may be strengthened by angle iron stiffeners 26, and iron rods or other reinforcements may be embedded in the concrete in the corrugations. The sheets may be joined end to end by lap or butt joints, and the overlapping parts may be welded or riveted together. As shown in Fig. 2, the sheets may be joined transversely of the corrugations by the provision of flanges 20, one of which has a bent-over part 22a ; a diaphragm 21 may also be provided.
Patent GB-748453-A (GB)
Title: Motor compressor having pistons working continuously or at least part of the time assemi-free pistons
IPC: F02B71/04
Filed: 1952-12-15
Abstract: 748,453. Direct acting compressors. PESCARA, R. P. Dec. 15, 1952 [Dec. 14, 1951], No. 31689/52. Class 7(2) In a motor compressor having pistons working continuously or at least part of the time as semi-free pistons, the outer dead-centre position of the pistons being determined by a crank mechanism, the motor compressor comprising an internal combustion part preferably with twostroke cycle operation and at least one compression chamber wherein air is reduced in pressure and drawn in from outside on the inward piston strokes and compressed on the outward strokes, the compression chamber which is provided with an exhaust valve opening at a certain pressure is put into communication at the end of the inward piston stroke with a space at a higher pressure, the size of the communicating opening and/or the length of the period during which communication exists between the compression chamber and the space at higher pressure depending on the inner dead-centre position of the free piston in such a manner that the size of the opening or the period of time is the greater the farther the inner deadcentre position is situated towards the in side so that the compression chamber is supercharged with compressed air dependent on the inner dead-centre position at the end of the de-compression or suction stroke. The Figure shows an internal combustion operated compressor comprising a compressor cylinder 10 and a pneumatic energy accumulator cylinder 14. During the inward strokes the pistons 4, 5 are arranged to uncover ports 21, 22 respectively and thus permit air from the engine casing 8 to pass into the cylinders 10, 14. Thus the position reached by the pistons on an inward stroke determines the amount of air which is admitted to the cylinders. The description also refers to adjusting the amount of air in at least one of the cylinders 10, 14. In the modification in the mass of air may be performed in the actual compressor cylinder or cylinders and/or in the pneumatic energy storage chambers. During each outward stroke air is drawn into the engine casing through an inlet valve 20 and this air is compressed by the inner surfaces, of the pistons during the inward strokes. A pressure relief valve 19 is provided in the accumulator cylinder 14. The compressor may be of the free-piston type or the pistons may be semi-free in which case the levers 15, 17, 18 of each synchronizing mechanism will be in alignment when the outer dead-centre is reached. The cylinder 1 preferably works on a two-stroke diesel engine cycle.
Patent GB-395721-A (GB)
Title: An improved material for tool or tool parts
IPC: C22C29/06
Filed: 1931-11-16
Abstract: Molybdenum carbide may be made by heating in a reducing atmosphere to 1400-1600 DEG  C. a powdered mixture of molybdenum and carbon in the theoretical proportions to produce Mo2C. Titanium carbide may be similarly made but at a higher temperature, or by treating a mixture of TiO2 and carbon, the product being again heated with carbon to remove residual oxygen.  Zirconium carbide and silicon carbide may be similarly produced.  Alternatively gases such as coal gas may be passed over heated powdered metal or compounds in carbon tubes. Specifications 361,363 and 383,327, [both in Group II], are referred to.ALSO:A material particularly for tools or tool parts consists of 21-50 per cent of one or more carbides of one or more sixth group elements, particularly chromium, molybdenum, and tungsten, up to 22 per cent of one or more auxiliary metals of the sixth and eighth groups, particularly nickel, cobalt, and chromium, and one or more carbides of one or more fourth group elements, particularly titanium, silicon, and zirconium, as remainder. Examples may consist of titanium carbide with 21-30 per cent of molybdenum carbide, 8-10 per cent of nickel, and up to 2 per cent of chromium; or 83-90 per cent of equal proportions of titanium carbide and molybdenum carbide, 9-15 per cent of nickel and 1-2 per cent of chromium.  Up to 2 per cent of oxides of alkaline earth metals, aluminium, and silicon may be added. The mixtures are consolidated by pressure and heat, the temperature being raised to about 1400-1600 DEG  C. for one or more hours.  The molybdenum carbide may be made by heating in a reducing atmosphere to 1400-1600 DEG  C. a powdered mixture of molybdenum and carbon in the theoretical proportions to produce Mo2C.  Titanium carbide may be similarly made but at a higher temperature, or by treating a mixture of TiO2 and carbon, the product being again heated with carbon to remove residual oxygen.  Zirconium carbide and silicon carbide may be similarly produced. Alternatively gases such as coal gas may be passed over heated powdered metal or compounds in carbon tubes. Specifications 361,363 and 383,327 are referred to.
Patent GB-428474-A (GB)
Title: Improvements in pulverizing mills for the reduction of mineral ores or the like
IPC: B02C15/14
Filed: 1933-11-14
Abstract: 428,474. Edge - runner mills. HORTON, F. C., 21, Chiswell Street, Finsbury, London.-(Isherwoods, Ltd. ; P.O. Box 78, Nairobi, Kenya, East Africa) Nov. 14, 1933, No. 31764. [Class 59] An edge-runner mill for grinding ores is provided with a series of water jets which set up a turbulent action and eject pulverized material toward and through a screen surrounding the pan, scrapers and deflectors between the rolls divert material to the succeeding rolls. The pan 2, provided with crown wheel 13, is revolved by bevel wheel 12, each roller 1 being mounted on a shaft 5 movable at one end in guides 8 in a bracket 10 and universally jointed on a ball 6 mounted on a central column 7. An arm 17 adjustable on the column 7 extends between each two rollers and carries adjustable scrapers 18, 19 and deflectors 20, 21. A hopper 22 on the column 7 is provided with shoots 23 to deliver ore to the front of each roller and a sectional arcuate screen 24 is removably fixed in a framework 25 surrounding the edge of the pan. Water jets 26 deflect the crushed material behind each roll toward the screen and further jets may clean the screen. The crushed material passes through the screen into a launder 27.
Patent GB-749500-A (GB)
Title: Ditch and like cleaning machine
IPC: E02F5/28
Filed: 1954-11-04
Abstract: 749,500. Dredging and weed-cutting vessels. RITSCHER, K. Nov. 4, 1954 [Nov. 11, 1953], No. 31863/54. Class 113. In a ditch, culvert or like cleaning machine comprising a float assembly having mounted thereon a cutting and clearing unit comprising a shaft 8 rotatable within a cylindrical casing 13 terminating at a centrifuge 10, which shaft has a cutting head 12 and is provided, within the casing, with a conveying screw 11 adapted to convey material from the cutting head to the centrifuge, the unit is mounted on a socket 7 on a king pin 6 so as to permit lateral and elevational adjustment of the position of the cutting head relative to the float assembly. Two cylindrically-shaped floats 1, 2 are adjustably connected side-by-side by means of cross bearers 3, 4, 5 and may be used as skids when the depth of water is insufficient to permit floating. The cutting and cleaning assembly may be arranged offset from the longitudinal axis of the float assembly. The shaft 8 is driven from a motor 14 attached to a platform 16 mounted on the socket 7 of the king pin 6. A hand windlass 17 and a hand crank 19 located on the platform provide control of the elevation and lateral adjustment respectively of the head 12.
Patent GB-922077-A (GB)
Title: An improved mask respirator
IPC: A41D13/11
Filed: 1960-09-15
Abstract: 922,077. Respiratory masks. P. R. LAGUE, and A. DYNES. Sept. 29, 1961 [Sept. 16, 1960], No. 31885/60. Class 81 (2). A respiratory mask comprises a face-contacting frame 2 to which a front frame 1 is hinged, a filter pad 4 being gripped between the frames when they are closed. The front of the face-contacting frame is formed by a grid 8, 9. The front frame is hinged to the lowermost part of the face-contacting frame which has exterior ribs 11 which engage with corresponding recesses in the front frame to secure the frames in closed position. The front frame has a grid 14, 15. A wire loop 16 prevents deformation by the nose of the uppermost portion of the face-contacting edge 3 of the face-contacting frame. The frames may be made of nylon or polypropylene.
Patent GB-630832-A (GB)
Title: Improvements in coal cutters
IPC: E21C27/28
Filed: 1947-12-05
Abstract: 630,832. Percussive coal cutters.  COPPEE ET CIE, E. Dec. 5, 1947, No. 32161.. Convention date, Dec. 7, 1946. Addition to 616,946. [Class 124]  A coal cutter comprises a percussive tool 1 supported by trunnions 2 between two compressed air cylinders 4 the ends of the piston rods 5 of which are pivotally connected to a cross piece 6 supporting s relatively rotatable head piece 7. The cylinders 4 are connected by crosspieces 9 the lower one of which supports a pivot resting in a socket in a base 10 with four feet 11. Between the feet 11 are a pair of iron rails. 12 which lie flat during operation of the cutter but which can be placed on edge, by means of levers, so as to lift the cutter from the ground and serve as a sliding: track therefor.
Patent GB-779165-A (GB)
Title: Pressure die casting and moulds therefor
IPC: B22D17/22
Filed: 1954-11-08
Abstract: 779,165. Moulds. SAUTER, H., and HAHN, W., [trading as HAHN & KOLB]. Nov. 8, 1954 [Nov. 7, 1953], No. 32195/54. Class 83 (1). A mould for pressure die-casting is formed within a compression-resisting jacket, and the jacketed mould is introduced into a cavity in one die-part of a pressure die-casting machine. The ceramic mould 8 is formed in a steel jacket 3 with a perforated bottom 4, the wax or plastic pattern being melted or burnt out, and the mould baked. The jacketed mould is supported in a cavity in the die-part 2 of the machine, and its top surface is ground after baking so that the fixed die-part engages the die-part 2 closely. The inlet-channel 6 is framed by a metal sleeve 18 so as to prevent erosion of its edge.
Patent GB-849986-A (GB)
Title: Improvements in and relating to electric batteries
IPC: H01M6/06
Filed: 1958-10-09
Abstract: 849,986. Batteries. UNION CARBIDE CORPORATION. Oct. 9, 1958 [Oct. 9, 1957], No. 32205/58. Class 53 A dry cell comprises a steel can 2 enclosing a cathode 4 of manganese dioxide and carbon separated from the anode by a layer of paper 10. The anode consists of a porous annulus or tube 6 made of finely divided metal which when placed in the electrolyte 8 in the cell swells and assumes the form shown in Fig. 2, leaving only a central channel for free electrolyte. In this condition the metal particles of the anode attain a maximum concentration on the outer periphery of the anode. The anode is made by extrusion and may consist of amalgamated zinc particles mixed with a solution of potassium hydroxide and sodium carboxy-methyl cellulose. The electrolyte is a solution of potassium hydroxide containing zinc oxide and thickened with sodium carboxymethyl cellulose, hydroxyethyl cellulose, casein or polyvinyl acetate latex. The anode collector is a copper wire 12 which makes contact with the negative terminal 16.
Patent GB-335418-A (GB)
Title: A new front and side safety hinge arrangement providing freedom without packing
IPC: E05D5/04
Filed: 1929-10-25
Abstract: 335,418. Zorrilla, M. G. Jan. 21, 1929, [Convention date]. Barrel-hinges, consisting of two plates 1, 2 each with two leaves at an angle and knuckes 3, 4 at the angle, have a hinge pin 6 rigid with one knuckle and free within the other, a washer 5 of softer material being placed between the hinge plates. The head 7 may be separate or formed integral with one of the plates,
Patent GB-391889-A (GB)
Title: Improvements in tip-up seats
IPC: A47C7/56
Filed: 1931-11-24
Abstract: 391,889. Tip-up seats. AMERICAN SEATING CO., 901, Broadway Avenue, N.W., Grand Rapids, Michigan, U.S.A. Nov. 24, 1931, No. 32530. Convention date, March 14. [Class 52 (ii).] A spring-operated tip-up seat is adjustably frictionally controlled to produce an initial delay in the tilting operations of the seat. The seat 1 mounted on an arm 2 is pivoted at 5 to the supporting brackets 4 and a lever arm 8, that is frictionally held in a housing 6 on the arm 2, is pivoted at 17 also to the brackets 4. The pivot pin 17 passes through an arcuate slot 18 in the supporting arm 2, and the lever arm 8 is actuated by a spring 19 bearing on the fixed disc 20 and slidable disc 21, so that the seat is tilted by the spring action and the reaction of the pin 17 on the arcuate slot. Initial delay in the tilting of the seat is obtained by frictionally gripping the lever 8 between raw hide strips 9, the tensioning of these friction elements being adjusted by means of a set screw 13 engaging a lever 10. In modifications, the frictional element may be U-shaped or circular, and controlled by a set screw in each case, and the lever arm may be pivoted to the seat arm at its outer end, the friction housing being secured to the clamp on the .supporting brackets.
Patent GB-636984-A (GB)
Title: Improvements in cooking or baking devices
IPC: A47J37/00
Filed: 1947-12-11
Abstract: 636,984. Cooking by the waste heat of internal combustion engines. SPOONER, W. W. Dec. 11, 1947, No. 32662. [Class 28(i)] Exhaust gases from a heat engine driving accessory parts of cooking apparatus is mixed with gas circulated in a closed circuit in heat exchange relationship with the treated goods. A cooking chamber 13, Fig. 1, contains a fan 1 which draws exhaust gases from an engine 9 through a heat exchanger 2 and circulates it, together with air admitted through an opening 16 through pressure chambers 3 and 4 and nozzles 5 on to a heat radiating plate 6. Goods may be placed within or conveyed through the chamber. The exhaust gases may supply a part of the power required to drive the fan by being directed through a nozzle on to the fan blades before being circulated thereby through a heat exchanger supplied with heated gas from an external source. In a further embodiment the heat exchanger is omitted and the exhaust gases are directed against the fan blades and mix with the circulated air within the cooking chamber.
Patent GB-717817-A (GB)
Title: An omnibus construction
IPC: B62D47/02
Filed: 1952-12-24
Abstract: 717,817. Vehicle floors. PEKOL, T. Dec. 24, 1952 [Sept. 22, 1952], No. 32705/52. Drawings to Specification. Class 108(1) An omnibus has a continuous seat sup.- porting floor extending the length of the carriage frame and lying below the level of the wheel axes.
Patent GB-1510964-A (GB)
Title: Image-bearing sheet and method of production therefor
IPC: B44F1/12
Filed: 1975-07-23
Abstract: 1510964 Printing processes WIGGINS TEAPE Ltd 23 July 1975 [24 July 1974] 32742/74 Headings B6A and B6C A document is produced from a sheet of fibrous material which becomes transparent under pressure with or without heat and which is partly made of plastics fibres, by pressing a relief or intaglio member against a part of the sheet. The resulting design is negative or positive depending on whether transmitted or reflected light is used to view it. If heating is used then the sheet is subsequently cooled rapidly.
Patent GB-899252-A (GB)
Title: Reserve lift indicator for aircraft
IPC: B64D43/02
Filed: 1958-10-14
Abstract: 899,252. Stall warning devices on aircraft. RASPET, A. Oct. 14, 1958 [Oct. 21, 1957], No. 32744/58. Class 4. [Also in Group SXXVIII] A stall warning device on an aircraft comprises a sensor 10 positioned between 50% and 85% of the wing chord on the upper surface with an inlet 11 located as shown in Fig. 2 at a level outside the turbulent boundary layer as it exists for low or safe angles of attack of the wing. Inlet 11, which is downwardly inclined to prevent the entry of water, connects by a rubber pipe 28 to a pressure transducer (see Group XXXVIII) which develops signals amplified at 13 to operate warning devices such as earphones 14, a loudspeaker 15, a warning light 16 or a meter 17. At low angles of attack the boundary layer does not influence inlet 11, but at a larger angle of attack, such as shown in Fig. 2, turbulent peaks produce pressure variations within the inlet which result in the intermittent transmission of warning signals to the warning devices. Under these conditions there is a reserve of lift on the wing, but when this stalls the area of turbulent boundary layer engulfs inlet 11 and produces a signal of increased frequency. The sensor 10 may be positioned well outboard on the wing to avoid extraneous turbulent effects from engines and propellers though where this is undesirable a pair of sensors may be positioned close together on the wing and connected in opposed series relationship so that periodic extraneous noise will be cancelled out though " noise" resulting from turbulence, which is not periodic, will be detected.
Patent GB-1385667-A (GB)
Title: Conveyors
IPC: B21B43/00
Filed: 1973-07-10
Abstract: 1385667 Conveyers MOELLER & NEUMANN GmbH 10 July 1973 [13 July 1972] 32763/73 Heading B8A For feeding circular-section metal bars 12 or I-section metal stock 14 to a cooling bed B, two groups of raisable and lowerable supports 2, 3 are provided. When the bars 12 are fed by rollers 1, the supports 3 are held in their raised position and the supports 2 are raised and lowered. A bar 12 is thus transferred from position 12<SP>1</SP> to position 12<SP>11</SP> from which, after alignment on a stationary channel 4, it is moved by a moving beam unit 6 of the bed B into the first recess of a fixed unit 5 of the bed. When a stock member 14 is to be conveyed, the upper surfaces of the supports 2, 3 are maintained in alignment and are raised and lowered in synchronism. The supports 2, 3 are actuated by lever means 7-10.
Patent GB-160581-A (GB)
Title: Improvements in and connected with screw propellers
IPC: B64D35/06
Filed: 1919-12-31
Abstract: 160,581. Sherwood, S. K. Dec. 31, 1919. Screw propellers. - Relates to the mounting and driving of right- and left-handed coaxial propellers, which are rotated in opposite directions and consists chiefly in preventing play of the moving parts by causing a flange 8 on the box 6 to engage a groove formed in the bevel-wheel 4 carried by the propeller B. The other propeller A is keyed to the driving-shaft 1 carrying a bevel-wheel 2, which drives through the gears 3, 3 the bevel-wheel 4. The various gear-wheels are supported, as shown, in the box 6.
Patent GB-801544-A (GB)
Title: Improved procedure for producing neutral tetracycline from chlortetracycline
Filed: 1955-11-16
Abstract: Neutral tetracycline produced by reducing chlortetracycline to tetracycline by means of hydrogen in an inert solvent and adding water to precipitate the tetracycline, is obtained in greater purity by adjusting the pH of the reduced solution to 4.5 to 7.5, and preferably 5.7 to 6.5, and then adding water in the presence of one or more alkali metal sulphites and/or ammonium sulphite. The sulphites are preferably added in solution in the water.  pH adjustment is by a mineral acid such as hydrochloric.  The quantity of sulphite is 0.9 to 15 per cent, and preferably 5 to 10 per cent, by weight of the tetracycline.  The preferred solvents are 1 to 4 carbon alcohols, e.g. methanol, ethanol, propanol and butanol, mixtures thereof and mixtures with glycol ethers such as 2-methoxy ethanol and 2-ethoxyethanol.  Reference has been directed by the Comptroller to Specification 747,779.
Patent GB-843582-A (GB)
Title: Improvements in carburretors for internal combustion engines
Inventor: MENNESSON ANDRE LOUIS
IPC: F02M1/00
Filed: 1958-10-14
Abstract: 843,582. Casting composite carburetters. SOC. INDUSTRIELLE DE BREVETS ET D'ETUDES S.I.B.E. Oct. 14, 1958 [Dec. 24, 1957], No. 32790/58. Class 83 (1). [Also in Group XXVII] In a carburetter (see also Group XXVII), comprising a passage 8 for the circulation of a fluid heated by the engine, the passage is formed in at least one part 9, which is incorporated in the walls of the intake-pipe at the time when the walls are cast. The walls of the intake-pipe may be made of an alloy having a very high content of zinc and a low content of aluminium and copper, and the part 9 may be made of a copper-alloy such as brass, or of a non-rusting steel. The carburetter body may be made of material sold under the Registered Trade Mark " Zamak."
Patent GB-413714-A (GB)
Title: Improvements in the manufacture and production of pure lecithin
IPC: C07F9/10
Filed: 1932-11-21
Abstract: Substantially pure lecithin is obtained from substances containing the same by extracting the substance with an organic solvent after first removing any water present, adding an inorganic oxidic sol to the extract and decomposing the resulting precipitate by means of acids or alkalies.  The pure lecithin is isolated by filtering off the inorganic precipitate and adding acetone or ethyl acetate to the filtrate.  In examples: (1) water is removed from fresh egg yoke by treatment with acetone and the lecithin extracted by means of anhydrous ethylalcohol at reduced pressure, and with exclusion of light and oxygen; an alcoholic aluminium oxide sol is added, the resulting precipitate suspended in alcohol, chloroform or carbon tetrachloride and the aluminium precipitated by means of gaseous ammonia; by adding acetone to the inspissated solution the pure lecithin is obtained; (2) crude phosphatide obtained from soya bean oil is dissolved in ether or carbon tetrachloride and treated with alcoholic silica sol; the resulting jelly, after extraction with a little ether is suspended in ether and decomposed with hydrochloric acid; after filtration the lecithin is precipitated by means of acetone; (3) fresh beef's brains, dried by treatment with acetone are extracted with dry methyl alcohol at reduced pressure and an alcoholic iron oxide sol added; the resulting precipitate is suspended in chloroform, treated with ammonia and the separated solution concentrated and treated with acetone.  The crude starting material may be dried by means of ethylacetate or with a current of dry air and the oxide sols may be prepared in situ by addition of an alkali, e.g. ammonia or sodium, potassium or lithium hydroxide or carbonate, to an alcoholic solution of the metal salt, e.g. aluminium chloride, sulphate or phosphate.  Sols of oxides of zinc, tin, cadmium, copper, chromium, and zirconium are mentioned. Specification 294,264, [Class 1 (i)], is referred to.