baber/WOPTO huggingface dataset:
Patent GB-231655-A (GB)
Title: Improvements in or relating to music desks for pianos and like musical instruments
IPC: G10C3/02
Filed: 1924-03-15
Abstract: 231,655. Collins, D., Hames, G., and Freeston, H. March 15, 1924. Desks; desk adjustments.-A music desk for pianos and the like is carried by a member 3 hinged at 4 to the piano and can slide lengthwise of the piano. A folding desk 1 has, on a bar 1<a>, pins 7 or a dovetail projection engaging in a dovetailed groove 6 in the hinged bar 3, or eyes or sleeves on the desk slide on a rod hinged to the piano.
Patent GB-1198000-A (GB)
Title: Method and Apparatus for Applying a Coating of Adhesive Material on to a Support
IPC: B05D1/22
Filed: 1968-02-09
Abstract: 1,198,000. Laminates. STADEXA.B. 9 Feb., 1968 [10 Feb., 1967], No. 6668/68. Heading B5N. [Also in Divisions B2 and D1] Laminates are produced by stacking layers, with possibly one or more other materials, of an adhesive coated material produced by solidifying the adhesive material by. cooling toja temperature at or below which it forms a solid brittle mass capable of being comminuted, comminuting the mass into particles by crushing at or below the said temperature, forming from the particles a fluidized bed maintained at or below said temperature, bringing a support surface into contact with the fluidized bed and causing the particles to adhere to the support surface. The particles are caused to adhere by heating the surface to a temperature substantially equal to the softening temperature of the adhesive material or by setting up a potential difference between the surface and the fluidized bed. The surface with the particles adhered thereto may be heated to a temperature substantially equal to the temperature of liquefaction of the adhesive material whereby the latter may spread over the surface to form a homogenous layer. The support may be a strip, plate, non-woven fabric, gauze, of cellulose triacetate, metal or paper; or cellular polymer foam of, for instance, rubber, polyvinyl chloride or polyurethane. When coated with adhesive on one side only, the other side may be coated with an anti-adhesive substance. The adhesive may consist of natural or synthetic rubber e.g., butadiene-styrene, polyisobutylene, or polyvinyl ether; hydrogenated rosin, rosin esters, polyterpenes, hydrogenated coumarone-indene, or polyvinyl pyrrolidone. The adhesive may contain a non-adhesive filler e.g. zinc oxide or clay; a thermoplastic e.g. a wax, polyvinyl acetate or a polyamide; a water-soluble adhesive e.g. bone glue or starch; or a water-soluble polymer e.g. polyvinyl alcohol or polyacrylic acid. The other materials may be corrugated cardboard and ply-wood.
Patent GB-491658-A (GB)
Title: Improvements in abrasive articles and methods of manufacturing them
IPC: B24D7/18
Filed: 1937-03-06
Abstract: 491,658. Grinding-wheels etc.; moulding. TENNANT, W. J. (Carborundum Co.) March 6, 1937, No. 6704. [Class 60] [Also in Group V] An abrasive wheel or other tool having a working surface composed of a thin layer of particles of diamond, boron carbide, or other costly abrasive, is formed by placing a thin strip of paper, cloth or metal 4, coated with an adhesive 5 and grains 6 of the abrasive, which may be oriented to present their major axes normally to the surface of the strip, with the layer 6 innermost, in the barrel 1 of a mould, the strip 4, or a removable thin metal ring, supporting the cap 7 of the mould, which cap is held by a clamping member 9. The body of the mould is filled with plastic material 12, for example, a phenolic condensation product resin, a thermoplastic material, or rubber mixed with vulcanizing materials and fillers and including abrasive grit, and the material is compressed by the plunger 11 of the mould whilst this is located between steam heated platens 21, 22, the material 12 thus being hardened and adhering to the grains 6; the layer 4 may be removed by lapping or by dissolving the adhesive layer 5. A wheel for grinding with its flat face is formed similarly, as also is a wheel employing the flat face and the periphery. A wheel of the form shown in Fig. 7 has the abrasive strip slotted longitudinally and bent to fit the conical faces of the core 24. A layer of silicon carbide &c. may be secured to the layer 6 by an adhesive, so as to form an annulus on the wheel beneath the layer 6 of diamond &c. grains. Specification 454,474 is referred to.
Patent GB-698206-A (GB)
Title: Hand-controlled discharge nozzles for liquids
Filed: 1951-03-21
Abstract: 698,206. Liquid distributing nozz!es; valves. THOMPSON BROS. (BILSTON), Ltd., and HAND, K. March 21, 1952 [March 21, 1951], No. 6714/51. Classes 69(iii) and 135 A hand controlled discharge nozzle includes a cylinder 10, with circumferentially spaced ports 14, supplied with liquid through a banjo fitting 11 comprising an annular chamber 13 which surrounds the cylinder. The discharge is controlled by a piston valve 15, which is held closed by springs 18 between the valve and a plate 16, and is opened by a trigger 23 pivoted at 26 and engaging a pin 21 in a stem 20 of the piston. In the closed position the valve covers the ports, and seats on an annular flange 32. A filter 30 is provided.
Patent GB-379712-A (GB)
Title: Improvements in rotary compressors or pumps
IPC: F04C29/00
Filed: 1931-03-04
Abstract: 379,712. Lubricating rotary compressors. OGILVIE, H., 5, Charlwood Place, London. March 4, 1931, No. 6750. [Classes 12 (ii) and 12 (iii).] In a rotary compressor having sliding vanes 5, lubrication of the moving parts is secured by the spraying of oil through a series of holes 13 in the working chamber and walls. The holes contain plugs with spiralshaped grooves to atomize the oil jets, and the plugs may be inclined at various angles to distribute the oil in the working chambers. The oil chambers, at each end of-the compressor, communicate with each other through holes in the rotor which connect with slots 10 for the vanes. Strainers are fitted before each series of holes 13. Gas or air enters the compressor through a port 2 and is delivered through a port 3. The oil is separated from the compressed gas and returned to the compressor after being cooled.
Patent GB-290551-A (GB)
Title: Improvements in or relating to the distillation of solid carbonaceous materials
IPC: C10G1/02
Filed: 1926-12-04
Abstract: 290,551. Nielsen, H., and Laing, B. Dec. 4, 1926. Divided on 287,381. Lubricants for machinery.-A primary oil is obtained by the distillation of carbonaceous materials and yields lubricating oils having over 9 per cent of hydrogen, a specific quantity of 0.95 to 1.08 at 15‹ C. and a static coefficient of friction of from 0.1 to 0.185 at normal temperatures. The primary oil is heated with caustic soda to remove the tar acids, the residue is refined with sulphuric acid, 25 per cent of the refined oil being distilled off and the remainder passed through a filter press at -5‹ C. to extract the paraffin wax.
Patent GB-971220-A (GB)
Title: Improvements relating to electric circuit-breaker systems
Inventor: WILCOX THOMAS WEBSTER
IPC: H01H33/82
Filed: 1962-02-21
Abstract: 971,220. Gas blast switches. MERZ & McLELLAN SERVICES Ltd. Oct. 22, 1962 [Feb. 21, 1962], No. 6829/62. Heading H2B. A circuit-breaker system includes a main switch, consisting of a gas blast circuit - breaker 10 with series isolator 21 for making and breaking an inductive load circuit, and a resistor switch 25 operating automatically to connect a resistor 27 across the load immediately before the main switch opens and to disconnect it immediately after the main switch is closed. Electromagnetic release of a latch 44 operates a valve 40 to vent the underside of a piston 37 to atmosphere, whereupon the pressure air in a reservoir 35 drives the piston 37 downwards to open a blast valve 36, normally spring closed. Pressure air enters the circuit-breaker chamber separating the contacts and extinguishing the arc formed between them. As the valve 36 opens pressure air passes along line 85 to a valve 76 driving its spool to left to allow air from line 81 to drive a piston 68 upwards to close resistor switch contacts 28, 29. Pressure air also passes along a line 49 to a valve 50 and after a short period is sufficient to drive the mechanism 53, 56 over-centre to open the isolator 20. Rotation of the isolator shaft 54 causes a cam 65 to reset the latch 44, reapplying pressure to the underside of the piston 37 to close the blast valve and thus the circuitbreaker contacts. The isolator and resistor switch then remain in the open and closed positions respectively until a second latch 62 is electromagnetically tripped to allow a valve 39 to apply pressure air to the other side of valve 50 to reclose the isolator, a second cam 64 on the isolator shaft resetting the latch 62. Air is also applied to the other side of valve 76 driving its spool to the right to vent the underside of piston 68 through a restricted aperture 80. This restriction together with the overclosure allowed by spring mounting contact 28 ensures that the isolator 20 closes before the resistor switch opens. In a modification (Fig. 3, not shown), the resistor switch comprises a pivoted flexible blade arranged on the live side of the resistor.
Patent GB-754242-A (GB)
Title: Fault locating scale for ultrasonic testing
IPC: G01N29/06
Filed: 1954-03-09
Abstract: 754,242. Ultrasonic inspection devices. KRAUTKRAMER, J., and KRAUTKRAMER, H. March 9, 1954 [March 12, 1953], No. 6894/54. Class 118(2) Relates to the pulse-echo method of locating a flaw F in a metal sheet in which a beam of transverse ultrasonic waves is directed into the sheet at an angle # by means of a coupling block K which is moved over the surface of the sheet until an echo of maximum amplitude is observed on a cathode-ray oscillograph (C.R.O.), the time t for transmission of a pulse from the transducer to the flaw and back to the transducer being read off a graduated scale on the oscilloscope. The length of the transmission path in the sheet (W1+W2, as shown in Fig. 3) is equal to V/2 (t-t<SP>1</SP>) where t<SP>1</SP> is a constant dependent on the transmission time in the transducer and coupling K and the distance aF along the surface of the sheet from the coupling K to the flaw is equal to V/2 (t-t<SP>1</SP>) sin #. According to the present invention a rule 1, Fig. 4, is attached to the coupling block K. The rule extends along the surface of the sheet in the direction of transmission and the graduations 3 corresponding to those on the oscilloscope, these graduations being so scaled that the actual distance along the rule of a graduation mark corresponding to an echo time t is equal to V/2 (t-t<SP>1</SP>) sin #, i.e. the mark is opposite the position of the corresponding, flaw. A true distance scale 2 may also be engraved on the rule. An "incidence" line 10 on the rule is inclined to the measuring edge 6 at an angle (90-cc) and one edge 9 of a transparent cursor 8 is inclined at the same angle and constitutes a "depth" line. The cursor is adjusted so that the incidence and depth lines 10 and 9 intersect at a point P whose distance from a datum line 16 as indicated by calibration lines 11 is equal to the thickness d of the sheet. The depth 8 of the flaw is then indicated by the distance along the perpendicular through the position F of the flaw between the datum line 16 and the edge of the cursor. There may be a plurality of incidence lines 10 corresponding to different values of # and a plurality of depth lines 9 corresponding to a particular value of cc and different sheet thicknesses or to a particular thickness and different vlues of cc. The scale is adjustably secured to a clamp 5 which is attached to the block K and the cursor 8 is guided by a clamping screw 13 moving in a slot 12 and by a rabbet 15 on the cursor engaging the edge 14 of the rule.
Patent GB-974412-A (GB)
Title: Process of and apparatus for producing urea
IPC: C07C273/04
Filed: 1961-01-02
Abstract: In a process for producing urea from nitrogen and a gas mixture comprising carbon dioxide and hydrogen wherein the gas mixture is compressed and cooled to liquify the carbon dioxide and separate it from the hydrogen, ammonia is synthesised from the nitrogen and the separated hydrogen, and the ammonia produced is reacted directly with the carbon dioxide, the operating conditions are selected so that no external source of heat or pressure is applied between the synthesis of the ammonia and the reaction of the ammonia with the carbon dioxide. A mixture of carbon dioxide and hydrogen obtained by the <PICT:0974412/C1/1> partial combustion of fuel oil is compressed to 300 atmospheres by a compressor 1, passed through a heat exchanger 2, cooled to -50 DEG C. in a cooler 3 and liquid carbon dioxide is collected in a vessel 5. The hydrogen is passed through a plant 6 to remove remaining carbon dioxide and any carbon monoxide, mixed with nitrogen at 7 and the mixture reacted in a plant 8 to obtain liquid ammonia in a vessel 9.  Liquid carbon dioxide and liquid ammonia from vessels 5 and 9 pass through a heat exchanger 10 to an autoclave 11 under a pressure of 270 atmospheres where urea is obtained together with water, ammonia, carbon dioxide and ammonium carbamate. Subsequently the urea is separated and granulated as described in Specification 974,411.
Patent GB-469650-A (GB)
Title: Improvements in lanterns for floodlighting
IPC: F21V7/00
Filed: 1937-03-10
Abstract: 469,650. Floodlighting; street lamps. GRIMLEY, C. P. March 10, 1937, No. 7000. [Classes 75 (ii) and 75 (iv)] A floodlighting lantern giving a beam of light of substantially quadrilateral cross-section has a reflector comprising plates or sheets bent to form a basin or trough the surface contour of which conforms to that of two intersecting tubular segments. One portion of the reflector comprises a vertically disposed semi-cylindrical metal backing sheet 23 cut away at the top and bottom where it interfits with portions 24 (not shown) of such a shape as to form, when in position, parts of the surface of a cylinder having a horizontal axis. The sheet 23 is lined with vertical strips of glass mirror 25 and the sheets 24 with horizontal strips 26. The strips are held in position by the bent over edges 23a of the sheets and by metal strips fixed to the backing sheets at the lines of join or intersection of the cylindrical surfaces. The whole reflector is detachably mounted by means of pins 16 engaging within sockets 17 carried by the lantern structure. A holder 19 for the lamp 18 is adjustably supported by a boss 22 carried by the reflector. The lantern is designed to serve also as a street lighting fitment and comprises upper and lower members 5 and 6 connected by pillars 7 and supporting transparent or translucent panels 14 at the rear of the reflector and in front of the reflector a curved glass door 11 hinged at 12 and provided with a catch 13. Some of the light from the lamp 18 is reflected through a space s between the door and reflector and serves to illuminate the panels 14. Glazed panels 15 may be included in the lower member 6. The interior metal surfaces of the lantern are painted white to assist in dispersing any light not projected in the floodlighting beam.
Patent GB-786761-A (GB)
Title: Improvements in and relating to the preparation of intermediates in the synthesis ofpyrimidine compounds
IPC: C07D239/48
Filed: 1955-03-10
Abstract: b -Methoxy-b -ethyl-a -p-chlorophenylacrylonitrile is prepared by reacting a -p-chlorophenyl-b -ketovaleronitrile with methyl sulphate in the presence of an alkali metal bicarbonate in a solvent consisting of a major part of dioxan and a minor part of water. Preferably the reaction is carried out with heating, using 2-4 equivalents of methyl sulphate, 3-5 equivalents of alkali metal bicarbonate and dioxan containing 5-15 per cent by volume of water. The reaction mixture may be worked up by adding water and toluene or benzene, withdrawing the aqueous layer containing salts, and distilling off the toluene or benzene to dry the non-aqueous layer, which can be employed directly for condensation with guanidine to produce 2 : 4-diamino-5-p-chlorophenyl-6-ethylpyrimidine.  An example illustrates the preferred procedure, using sodium bicarbonate and dioxan containing 10 per cent by volume of water, and carrying out the final condensation with guanidine in ethanolic solution. Specifications 715,813 and 716,190 are referred to.
Patent GB-380041-A (GB)
Title: Improvements in or relating to cigarettes
IPC: A24D3/04
Filed: 1931-03-06
Abstract: Wads for cigarettes are built up as a continuous rod by mechanical forming means while moving axially, the rod being cut into lengths before or after insertion in cigarette paper tubes. The rod may be formed by plaited, braided, woven, or twisted strips of paper or other material, or threads or fibres of silk, cellulose or wool.  The wads may be formed by (1) helical windings which cross one another, (2) concentric layers of creped paper or fibrous material separated by helical windings of creped paper, (3) concentric paper tubes separated by either helical windings or by woven or plaited sleeves, (4) superposed strips of creped paper with or without layers of filtering material, the strips being of different width and folded longitudinally to produce a cylindrical filling, (5) loose material formed into a continuous rod, (6) a core of woven material around which creped paper or alternate layers of creped or plain paper are spirally wound or (7) bristles laid between a core of twisted threads or wires.  The rod may be built around a central core, or it may have its outer edge gummed if it is to be stored before inserting in a cigarette paper tube.  Cotton, filter paper, felt or pilose material may also be used.
Patent GB-398227-A (GB)
Title: Improvements in or relating to gas cocks and the like
IPC: F16K35/00
Filed: 1932-03-09
Abstract: 398,227. Plug-cocks. HAYWARD, TYLER, & CO., Ltd., 99, Queen Victoria Street, London, and KILBY, A. E., 4, Neville Road, Luton, Bedfordshire. March 9, 1932, No. 7103. [Class 135.] A gas-cock a has an auxiliary valve e connected in parallel to the inlet and outlet, coplanar discs on the valve spindles having interlocking cut-away portions g<1>, h<1> such that the main valve cannot be opened until the auxiliary valve has been opened, and must be closed before the auxiliary valve can be closed. Owing to the reduced initial gas-supply, the lighting-up explosion is reduced or prevented.
Patent GB-140083-A (GB)
Title: Improvements in or relating to the protection of the walls of enclosures in which re-actions take place under high temperatures and pressures
IPC: C01C1/04
Filed: 1920-03-09
Abstract: 140,083. L'Air Liquide, Soc. Anon. pour l'Etude et l'Exploitation des ProcÚdÚs G. Claude. Dec. 18, 1918, [Convention date]. Ammonia, catalytic production of from nitrogen and hydrogen; catalytic apparatus; apparatus for use with hydrogen under pressure and at a high temperature.-In carrying out reactions at high pressures and at high temperatures, for example the synthesis of ammonia, it is necessary to protect. the outer pressure-sustaining wall of the apparatus, for example by interposing a layer of liquid, such as fused potash-soda mixture, that is stable, inert, and a poor conductor of heat. According to the present invention, movement of the liquid in the protecting-layer, such as would vitiate its protective action, is prevented by a pile of rings of a material that is a poor conductor of heat and has the property of removing any hydrogen, if this is one of the reacting-gases, dissolved by the liquid; such a material is magnetic oxide of iron. In the apparatus shown, the reaction tube T<2> containing the catalyst is surrounded by a tube T<1> between which and the pressure-sustaining wall T is an annular space containing fused potash-soda mixture and filled with a packing of rings A of magnetic oxide of iron; or two or more layers of such rings may be employed, the rings of the outer layers overlapping the joints formed by the inner layers of rings so as to obviate radial movement of the liquid. The liquid extends beyond the level of the upper end of the tube T<2>, the height being determined by an overflow opening O<1> eventually closed by a plug B<1>. Any hydrogen dissolved by the liquid is removed by the magnetic oxide of iron. and to prevent admixture of the resulting water-vapour with the reacting-gases, the upper end of the tube T' contains a layer M of a material such as reduced iron by means of which the water-vapour is decomposed.
Patent GB-665754-A (GB)
Title: Improvements in or relating to the manufacture of articles from non-metallic laminarmaterials
IPC: B32B3/12
Filed: 1949-03-16
Abstract: 665,754. Moulding thermosetting resins. WAREING. R. J., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 16, 1950 [March 16, 1949]. No. 7205/49. Class 87(ii) [Also in Group VIII] In a method of making an article of laminar material having a core 1 of lightweight material sandwiched between layers 5 of woven fabric coated or impregnated with thermosetting resin, the core material is tapered towards its outer edge 2 and the woven fabric is extended beyond the said edge, the number of layers of woven fabric within the vicinity of the edge being increased, as at 7, to form an article having an outer edge comprising a plurality of layers of woven fabric devoid of core material. After consolidation of the laminae by heat and pressure the resulting edge may be provided with bolt holes 8. The edge may be shaped to facilitate the use cf special attachment means.
Patent GB-1139763-A (GB)
Title: A hydraulic pressure control system
IPC: F15B11/02
Filed: 1966-02-18
Abstract: 1,139,763. Hydraulic presses. WERNER & PFLEIDERER. 18 Feb., 1966 [21 April, 1965], No. 7333/66. Heading B5F. [Also in Division F1] An hydraulic system for supplying pressure liquid to a line 7 leading to e.g. a press cylinder comprises a low-pressure pump 1 and a highpressure pump 11 each connected to the line 7 through respective chambers 4, 14 in a housing 5, and a spool 9 automatically reciprocable within the housing 5 so that initially both pumps feed the line 7, then the low-pressure pump 1 is by-passed through a line 2a and finally the supply from the high-pressure pump is also by-passed through a series of throttle passages 20<SP>1</SP>, 21<SP>1</SP>, 221 and a line 12a to collapse the pressure in the line 7. The spool 9 is continuously urged to the left by a force P and to the right by the pressure of fluid in a chamber 17. The chamber 17 receives fluid from the highpressure pump 11 through a line 15 having a non-return valve 16 and from the chamber 14 through a slot 19 in the spool 9. As the pressure in the line 7 builds up the pressure in the chamber 17 also increases to displace the spool to the right. When the edge 10 of the spool 9 clears the line 2a the low-pressure pump 1 is bypassed and a non-return valve 6 prevents the escape of pressure from the line 7. The pump 11 continues to increase the pressure in the line 7 until further displacement of the spool 9 causes lands 20, 21, 22 on the spool 9 to open the throttled high-pressure by-pass passage 20<SP>1</SP>, 21<SP>1</SP>, 22<SP>1</SP>. Opening of the passage 20<SP>1</SP>, 21<SP>1</SP>, 22<SP>1</SP> collapses the pressure in the line 7 and the force P returns the piston to its original position.