baber/WOPTO huggingface dataset:
Patent GB-301974-A (GB)
Title: Improved process for vaporising formamide
IPC: A01N37/18
Filed: 1927-09-17
Abstract: 301,974. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Sept. 17,1927. Formamide is vaporized by bringing it, preferably under reduced pressure, in contact with surfaces heated above its boiling-point so that the formamide is immediately vaporized and no liquid formamide collects in the vaporizer. The formamide mav be injected through a nozzle into a retort heated to 450‹ C., and the vapour may be carried off by a current of gas. The vaporizer may be of copper, iron, or other suitable metals or quartz. Instead of employing a retort, the formamide may be sprayed against a system of coils heated by superheated steam or hot liquids or against hot rotary rolls or drums. If the vaporizer is of iron, the vapour will contain some hydrocyanic acid, which is an advantage when it is to be used for the production of hydrocyanic acid.
Patent GB-927351-A (GB)
Title: Improvements in or relating to the manufacture of phosphors and fluorescent lamps
Inventor: MCKEAG ALFRED HAMILTON
IPC: C09K11/00
Filed: 1958-07-30
Abstract: A method of manufacturing a crystalline inorganic phosphor powder, in which substantially all the particles are of sizes less than 25 microns, comprises lightly crushing the sintered mass formed by firing the component materials of the phosphor to produce an intermediate powder containing an appreciable proportion of particles of sizes greater than 25 microns and a major proportion of particles of sizes in the range of 25-5 microns, suspending the intermediate powder, or a powder derived therefrom by passing through a mesh sieve, in a liquid, preferably distilled water, and causing the suspension to flow under pressure through a cyclone in which a rapidly spiralling motion of the suspension takes place, resulting in a major proportion of the particles which are greater than 25 microns being thrown to the walls of the cyclone and falling to the apex thereof from which they are withdrawn and a major proportion of the particles which are smaller than 25 microns being drawn into a rising vortex and passing out through the vortex finder at the top of the cyclone.  The fine fraction consists substantially of particles of sizes in the range of 5-25 microns with the mode of size/weight distribution at about 10 microns.  In order to increase the yield of particles of sizes less than 25 microns, the coarse fraction from the cyclone is caused to flow through a further cyclone.  Apparatus for performing the method is described and the dimensions of the cyclone are given.  The Provisional Specification also describes apparatus for performing the method forming the invention of the Divisional Specification 927,354.  Specification 578,192 also is referred to.
Patent GB-1161483-A (GB)
Title: Improvements relating to Space Heating Systems
Inventor: HODGSON DOUGLAS
IPC: F28D21/00
Filed: 1965-06-10
Abstract: 1,161,483. Heating air. D. HODGSON. 6 Sept., 1966 [10 June, 1965], No. 24557/65. Heading F4S. In a space heating system, a tubular coil 15 placed in a chimney is traversed by the flue gases and air blown through the coil by a fan is heated, the heated air being delivered subsequently through grilles to the rooms of a building. The coil 15 is placed behind or above the fireback of a fireplace, as shown, or near the flue gas outlet of a coal, oil or gas-fired boiler. The coil may be fitted close to the periphery of the chimney. There may be more than one coil in the system, which may be connected to more than one flue gas source, and the air is passed through a filter (13, Fig. 1) before entering the coil. The coil or coils 15 may be made of ceramic material for industrial applications operating at a relatively high temperature.
Patent GB-171789-A (GB)
Title: Improvements in or relating to winding drums or the like
IPC: B66D1/30
Filed: 1920-08-24
Abstract: 171,789. Dubois, A. Aug. 24, 1920. Reels and reel carriages.-A winding-drum for a haulage engine consists of a central drum A with a projecting conical head, and two lateral cylindrical drums B. The drum A is fixed on a boss b keyed to the shaft a and two discs v are secured to the boss b and braced by stays d. The conical head is secured to steel crowns e secured to the discs c. The drums B are fixed to sleeves k on the shaft a and to the boss b and secured by hoops q, k<1>, and either may be attached to the central drum A by bolts passing through holes i in the inner flanges n on the drums B and through holes j in the crowns e. The spacing of holes i, j round the circumference is different. The lateral distance between drums A and B may be fixed by wedges o. Either of the drums B can be rotated with respect to the central drum A by loosening the bolts through the flanges tt and the bolts fastening the hoops q, and rotating the engine the required distance. Helical grooves g, I on the conical head and the drums B respectively and irons h on the lateral part of the conical head are provided for the rope. The drums B are also furnished with braking crowns m, m<1>.
Patent GB-188842-A (GB)
Title: An improved preparation for preserving wood and furniture and other articles made therefrom
IPC: B27K3/50
Filed: 1921-09-15
Abstract: 188,842. Jones, W. H. Sept. 15, 1921. Insecticides.-A composition for destroying worms &c. in wood consists of coal oil (paraffin oil), white precipitate and naphtha, preferably wood naphtha.
Patent GB-1512000-A (GB)
Title: Bladder for a hydro-pneumatic accumulator and an accumulator embodying such a bladder
IPC: F15B1/16
Filed: 1975-09-25
Abstract: 1512000 Hydropneumatic accumulators OFFSHORE-HYDRO Ltd 25 Sept 1975 [5 July 1974] 24858/74 Heading F1D An accumulator has a bladder 10 which is anchored at one end by a bead 19 and members 17, 20, and at the other end by a bolt 44, nut 52 and clamping members 45, 53. Compressed gas is admitted to the space between the bladder and the container 16 through a valve 56 and ducts 54, 55. Star-shaped members 46, 48 ensure that the bladder collapses in a pleated form. Closures 15  are provided for liquid ports 30, 32. Ribs may be moulded into the bladder to control collapse thereof.
Patent GB-248700-A (GB)
Title: Improved wall construction for furnaces
IPC: F23M5/00
Filed: 1925-10-06
Abstract: 248,700. Fuller-Lehigh Co., (Assignees of Hormell, D. C.). March 6, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Walls; pulverulent-fuel furnaces. - A furnace wall comprises a plurality of separate horizontal courses of fire-brick supported independently by means of hangers suspended from separate horizontal members. The hangers may be loosely suspended to permit slight angular movement of the sections as the walls tend to bulge, and each brick is keyed to its hanger with allowance for vertical movement. The space between an outer wall supporting the horizontal carrying-members and the inner fire-brick wall is divided into a number of separate horizontal passage ways for the pre-heating of secondary air. Each of the four walls of the combustion chamber is supported independently by buck-stays 18 on the inner edges of which are secured at intervals horizontal H-beams 19 which support tiers of bricks 20 which with the external plates 20a form the outer wall. Hooked parts 25 of the hangers 23 take loosely over the flange 26 of each beam 19, the hangers being retained in the vertical position by integral thrust members 29 projecting against the adjacent lower beam 19, a T- shaped projection 31, Fig. 4, on each thrust member preventing twisting movement. A shelf 22 projecting from each hanger supports the lowest brick 32 of a tier of fire-bricks 38 forming the separate courses 21, these bricks 32 being narrower than the bricks above them to accommodate the upper projections 33 of cap blocks 34 forming the top of each course. Loose asbestos 35, 36 is inserted between the courses to permit expansion and contraction and seal the joint. A key-way 37 is formed in each of the bricks, adapted to engage a T-shaped key 39 forming the rear edge of each hanger, the bricks being secured to the hanger by lowering them past the open end 40 of the key at the upper end of the hanger. Rows of apertures 17 for the admission of secondary preheated air are arranged so that the hangers are not subject to radiated heat from the furnace. The air is heated in independent passages 41 formed by rows of bricks 44 supported between shelves 42 on the upper ends of the hangers and shelves 43 on the thrust members 29 of the adjacent upper hangers, so that the air may be supplied in varying amounts to the different zones of the furnace. The invention may be applied to inclined walls or hopper bottoms of furnaces and is shown applied to a vertically-fired pulverulent-fuel furnace.
Patent GB-393931-A (GB)
Title: Improvements in water gauges of the flat transparent plate type
IPC: G01F23/02
Filed: 1931-09-05
Abstract: 393,931. Gauge glasses. SCH€FFER & BUDENBERG GES., Buckan, Magdeburg, Germany. Sept. 5, 1931, No. 24969. Convention date, Dec. 31, 1930. [Class 123 (i).] A water gauge of the flat transparent plate type comprises a body part 5 having a water channel 6 closed by a glass strip 9. The glass is retained by hinged side wings 12 pivoted in a member 10 and formed with bulbous ends 13 to engage the glass. The parts are tightened by means of screws 14. Asbestos packing is provided on each side of the glass strip 9. The outward movement of the wings 12 may be limited by pins 18, and the body may.be provided with a stop plate 19 on which the wings rest. Stops 20 prevent opening of the wings after slackening of the screws 14, until the member 10 is raised sufficiently to enable the bottom edges of the wings to clear the stops.
Patent GB-1527448-A (GB)
Title: Self-emulsifying anaerobically curing composition
IPC: C09K3/10
Filed: 1977-06-15
Abstract: 1527448 Anaerobically curable compositions LOCTITE CORP 15 June 1977 [ 17 June 1976] 24991/77 Headings C3P and C3V An anaerobically curing composition which is self-emulsifying in water comprises: (1) an anaerobically curable acrylate monomer, (2) a free radical initiator and (3) 0À25 to 10 wt. per cent based on the total composition of one or more anionic and/or nonionic surfactants dissolved in the composition to render it selfemulsifying in water. Suitable acrylates are polyacrylate esters; the use of triethylene glycoldimethacrylate and 1, 3-butylene glycol dimethacrylate mixed with lauryl methacrylate being exemplified. Any nonionic or anionic surfactant may be used, provided that it will dissolve in components (1) and (2). Many examples of ethoxylated and sulphonated materials are given. The compositions may be used to impregnate porous materials and excess composition not absorbed by the pores may be washed off with water owing to the self-emulsifying characteristic of the compositions.
Patent GB-1217050-A (GB)
Title: Method of removing a layer of material from a supporting surface
Inventor: WANESKY WILLIAM ROBERT
IPC: G03F7/42
Filed: 1968-05-24
Abstract: 1,217,050. Etching. WESTERN ELECTRIC CO. Inc. 24 May, 1968 [21 June, 1967], No. 24992/68. Heading B6J. A layer 17 of material, e.g. photoresist, is removed from a surface by impinging a fluid 18, e.g. water, against the overhanging portion of the material in such a direction as to separate the layer from the surface. The surface may be that of a silicon semi-conductor wafer 22 having gold leads 12 and bonded to an aluminium oxide plate 14 by layer 13 of mounting wax. The wafer has been formed by etching away those areas of a layer of silicon not protected by photoresist with an etching solution comprising 4 parts 70% nitric acid, 1 part 49% hydrofluoric acid and 3 parts of glacial acetic acid.
Patent GB-696623-A (GB)
Title: Improvements in centrifugal casting machines
IPC: B22D13/10
Filed: 1951-10-25
Abstract: 696,623. Centrifugal casting - machines. BUDERUS'SCHE EISENWERKE. Oct. 25, 1951 [Oct. 31, 1950], No. 25027/51. Class 83 (i). A centrifugal casting-machine has a part, which transmits the rotary movement to the mould, mounted to rotate on an annular part of the housing and coupled to the mould in a manner to permit relative radial and axial movement thereof. The housing 1 has an annular extension 2 which carries a bearing 3, the outer ring 4 of which is constructed as a crown gear or V-belt pulley &c. and has radial slots S extending parallel to the axis. These are engaged by radial arms 5 of a ring 10 mounted on the socket end 6 of the mould. Moulds of different sizes may be inter-changeable in one machine if they have rings 10 of the same diameter to engage packing 9 for the water jacket 7 which also cools the driving means. Specification 281,251, [Class 83 (i)], is referred to.
Patent GB-981220-A (GB)
Title: Compositions and methods
IPC: H01F1/03
Filed: 1962-06-29
Abstract: A method for preparing a composition which has an exchange inversion temperature occurring over a range of not more than 6  DEG C. and which is ferromagnetic above and substantially non-magnetic below the exchange inversion temperature, which comprises heating a composition which has an exchange inversion as above which occurs over a range of more than 6  DEG C., quenching the molten composition to produce a solid, annealing the solid and cooling the annealed composition slowly.  The composition may be prepared by mixing the components prior to melting which is preferably carried out in the absence of air.  The melting is carried out at 850-1400  DEG C. and air may be excluded by means of an argon or helium atmosphere, a molten salt flux (e.g. NaCl), or by heating in a vacuum.  Quenching may be by means of liquid argon, water, or oil, and should be to a temperature at least 100  DEG C. below the solidification temperature.  A chalcogen reactive agent (e.g. Al, C, Si, Mg, Ca, Na, Li, CaH2 or TiH2) may optionally be added to the melt prior to quenching.  The treatment of the following compositions is described: Mn 63.7%, Cr 3.3%, Sb 31.3%, In 1.7% ; Mn 64.62%, Cr 1.88%, Sb 31.82%, In 1.68% ; Mn 65.89%, Cr 0.88%, Sb 31.75%, In 1.66% ; Mn 64.98%, V 1.69%, Sb 31.66%, In 1.68% ; Mn 65.82%, V 0.86%, Sb 31.65%, In 1.67% ; Mn 63.10-64.12%, Cr 3.3-3.6%, Sb 30.94-31.94%, In 1.65-1.67%, with the addition of 0.33-0.46% of Al, 2.12% C, 0.27% Si, 2% Na, 0.1 mole per cent calcium hydride, 0.8% Ca or 0.4% Mg as chalcogen reactive agent. (All percentages are expressed as atom percentages.) Specifications 927,312, 930,690, 932,678 and 981,219 are referred to.
Patent GB-253064-A (GB)
Title: Improvement in fluid actuated percussive machines
IPC: B25D9/14
Filed: 1925-10-08
Abstract: 253,064. Ingersoll-Rand Co., (Assignees of Zimmermann, W. F.). June 4, 1925, [Convention date]. Percussive h a n d tools. - In a percussive, fluid-pressure operated, hand - supported tool, described as a sand rammer, a stuffing-box with gland D through which the piston-rod passes is arranged at the forward end of the tool.
Patent GB-690128-A (GB)
Title: Improvements in or relating to the preparation of 1-acetoxy-1.1-dicyano ethane
Filed: 1950-10-17
Abstract: 1 - Acetoxy - 1,1 - dicyano - ethane is produced by a process which comprises bringing together liquid acetic anhydride and hydrogen cyanide in the presence of a basic catalyst whereupon reaction occurs between the said acetic anhydride and the hydrogen cyanide and recovering the 1-acetoxy-1,1-dicyano-ethane from the reaction mixture.  The basic catalyst may be organic or inorganic and examples mentioned are tertiary amines such as trimethylamine, triethylamine, tributylamine, hexamethylene tetramine and pyridine, alkali metal salts of organic monocarboxylic acids such as sodium acetate, propionate and butyrate and potassium acetate, secondary amines such as dimethylamine, diethylamine, the hydroxides of sodium, potassium and ammonium and quaternary ammonium bases.  Gaseous hydrogen cyanide may be bubbled into liquid acetic anhydride containing the catalyst with cooling or liquid acetic anhydride may be added to liquid hydrogen cyanide or vice versa.  The reaction may be carried out in the presence of inert solvents or diluents such as benzene nitrobenzene and dioxane.  The desired product may be recovered by distillation from the reacted mixture which contains acetic acid in addition to unreacted starting materials.  In examples (I) and (II) hydrogen cyanide is bubbled into acetic anhydride containing triethylamine and sodium acetate respectively.  (III) and (V) liquid acetic anhydride, hydrogen cyanide and triethylamine are reacted in a stainless steel reactor, and (IV) benzene is employed as solvent in a process otherwise similar to (III).  1-Acetoxy-1,1-dicyano-ethane is separated from the reaction mixtures by distillation at reduced pressure and an azeotrope of acetic acid and triethylamine recovered in (I) may be recycled.  The 1-acetoxy-1,1-dicyanoethane is employed in the preparation of vinylidene cyanide and has insecticidal, fungicidal and herbicidal properties.  Specification 653,468, and U.S. Specifications 2,395.930 and 2,426,014 are referred to.
Patent GB-875472-A (GB)
Title: Improvements in electrically controlled unwinding apparatus
Inventor: GRANEAU PETER
IPC: B65H23/06
Filed: 1958-08-06
Abstract: 875,472. Automatic tension control systems. BRITISH INSULATED CALLENDER'S CABLES Ltd. Aug. 5, 1959 [Aug. 6, 1958], No. 25253/58. Drawings to Specification. Class 38 (4). [Also in Group XXXVII] The tension in a web is maintained constant by applying a braking torque to a drum, from which the web is unwound by an electrically driven capstan, by an alternating-current motor coupled to a shaft of the drum. The rotor of the A.C. motor is rotated by the drum in a direction opposite to that of the rotating field due to windings on the stator and control windings of saturable reactors in series between an A.C. supply and the stator windings are energized by the output of an amplifier, responsive to a signal from a strain gauge loaded by a jockey pulley over which the web passes, so as to maintain the tension in the web constant. For an induction motor having a wound rotor, the torque may be initially adjusted for the desired speed range by variable resistances in the rotor circuit. Specification 875,473 is referred to.
Patent GB-1178971-A (GB)
Title: Alignment of Adjustable Parts of a Structure
Inventor: BURCH JAMES MORRISS
IPC: G01B9/02
Filed: 1965-06-15
Abstract: 1,178,971. Optical alignment apparatus. NATIONAL RESEARCH DEVELOPMENT CORP. June 15, 1966 [June 15, 1965], No.25270/65. Heading G2J. In apparatus for the alignment of adjustable parts with respect to a reference axis 12b, the axis 12b is defined by an optical system comprising a beam splitter 13 inclined at 45 degrees to axis 12b, a roof prism 14 on the axis receiving light reflected from beam splitter 13, and a roof prism 15 receiving transmitted light from beam splitter 13 along an axis 12a inclined at 90 degrees to axis 12b, a collimated beam of mono-mode laser light being directed along axis 12b by adjusting the inclination of the incident beam to axis 12a until the twin beams passing along axis 12b coincide as viewed on a screen 17. The adjustable part is then shifted into alignment with the laser beam defining axis 12b, a screen 16 bearing a target being attached to the part for the purpose. For more precise alignment, screen 16 may have a small aperture surrounded by four photo-cell quadrants whose outputs are used to indicate the position of the laser spot during alignment. An evacuated tube may be placed between screen 16 and the optical system.
Patent GB-190541-A (GB)
Title: An improved trestle or foundation for railway point rod roller frames
IPC: B61L7/02
Filed: 1921-09-23
Abstract: 190,541. British Power Railway Signal Co., Ltd., and Cox, H. E. Sept. 23, 1921. Rods and wires for operating points and signalling apparatus.-A cast iron trestle support for frames or standards in which point rod rollers are mounted, has a top 1 with apertures 5 for securing the roller frames the top being supported by a central leg of cruciform section rising from the base 2. Opposite sides of the top have depending flanges 4 with holes 6 so that trestles can be bolted together. The flanges have thickened endportions 7 which can be chipped away if necessary so that the trestles can be accurately aligned. Two of the webs 3 of the cruciform leg extend to the flanges 4 and all the webs may be narrowed along the central portion. The trestles are bedded in earth or concrete up to the level of the bolts securing adjoining trestles.
Patent GB-368224-A (GB)
Title: Improved method of and means for heating water, air and other fluids
IPC: F25B27/00
Filed: 1930-08-25
Abstract: 368,224. Heating; refrigerating. STOBIE, J. C., Franklin Street, Henley Beach, South Australia. Aug. 25, 1930, No. 25335. Convention date, Sept. 6, 1929. Void [Published under Sect. 91 of the Acts]. [Class 29.] Compression machines and systems.-Water, air, or other fluid contained in a vessel D is heated by the circulation of a volatile fluid such as butane in a closed cycle consisting of a compressor B, a condenser C, a motor E, which may be replaced by a reducing valve, and an evaporator A. The evaporator A may be exposed to the atmosphere or placed in flowing water from which it absorbs heat to maintain the evaporation of the butane under the reduced pressure produced by pump B. The condensation of this vapour in coils C under the pressure produced by pump B causes an evolution of heat which is absorbed by the fluid in vessel D. To attain higher temperatures two cycles may be combined, the evaporator of one being heated by the condenser of the other. The liquid in the higher temperature cycle may be methyl alcohol or water.
Patent GB-600178-A (GB)
Title: Improvements in or relating to pulleys
IPC: F16H55/52
Filed: 1945-09-29
Abstract: 600,178. Belt pulleys. GORDON, J. E. Sept. 29, 1945, No. 25362. [Class SO (i)] [Also in Group XVI] Compensatory cambering to prevent a paper or other belt 15 from running off a crown or flat pulley is provided automatically by forming the pulley with peripheral segments 13 capable of limited transverse pivoting under belt pressure. As shown, the segments have inwardly projecting pivots 23 engaging depressions 12 in a hexagonal shaft hub 10, and are retained in position by an encircling rubber sleeve 14.
Patent GB-762913-A (GB)
Title: Control apparatus for road vehicle direction indicators of the flashing type
Inventor: SUTHERLAND WILLIAM DRUMMOND
IPC: B60Q1/38
Filed: 1954-09-01
Abstract: 762,913. Electromagnetic interrupters. C.A.V., Ltd. Aug. 30, 1955 [Sept. 1, 1954],. No. 25374/54. Class 38(5) An interrupter for flashing vehicle direction indicator lights a and b upon manual closure of selector switch c, comprises a magnet d controlling a spring- biased armature m carrying a pair of contacts e, g co-operating, respectively, with contacts f, h. The contact f is carried by a flywheel j biased by a spring k normally to hold contacts e, f closed. Operation of the switch c energizes the magnet. d whereby the flywheel is rotated clockwise against its bias and contacts g, h are closed. Continued rotation of the flywheel opens contacts e, f and eventually an arm. g on the flywheel deflects the contactcarrying spring arm p and opens contacts g, h. Thus the springs k, n restore the parts to their positions and the cycle is. repeated.