baber/WOPTO huggingface dataset:
Patent GB-451419-A (GB)
Title: Improvements in or relating to the manufacture of vat colour powders
IPC: C09B67/28
Filed: 1935-02-05
Abstract: Vat colour powders for dyeing paper are obtained by drying a vat colour paste containing dextrine and a water-soluble salt of a condensation product of a naphthalene sulphonic acid and formaldehyde.  Small quantities of alkaline substances may be added to assist in the dispersion of powders containing acidic impurities. Specifications 272,896 and 276,100, [both in Class 2 (iii)], are referred to.  According to examples, N-dihydro-1 : 2 : 2<1> : 1<1>-anthraquinone azine, dichlorisoviolanthrone, flavanthrone, Sulphanthrene orange R, Sulphanthrene pink FF, and 5 : 7 : 5<1> : 7<1>-tetrabromindigo are mixed in paste form with dextrine and an aqueous solution of the sodium salt of the condensation product of naphthalene sulphonic acid and formaldehyde.  The mixtures are dried and ground, and used to dye paper by incorporating into the paper beater, with the bleached sulphite pulp, resin soap size and aluminium sulphate, in the customary manner. Formaldehyde-naphthalene sulphonates are prepared by heating naphthalene with sulphuric acid monohydrate for 10 hours at 160 DEG C., diluting, and heating for 6 hours with 40 per cent formaldehyde at 95 DEG  to 100 DEG  C.  The mass is cooled, diluted, treated with lime and the sodium, potassium or ammonium salt prepared from the calcium salt by the use of the appropriate carbonate.  Specifications 195,619, [Class 2 (ii)], 224,502, and 241,854, [both in Class 120 (iii)], and 246,609, [Class 15 (ii)], also are referred to.
Patent GB-1126611-A (GB)
Title: Improvements in or relating to electrical devices of the kind having a rotor
Inventor: WHITE RICHARD WILLIAM
IPC: H02K13/00
Filed: 1965-01-29
Abstract: 1,126,611. Gyroscopic apparatus. SMITHS INDUSTRIES Ltd. Jan. 21, 1966 [Jan. 29, 1965], No. 3930/65. Heading G1C [Also in Division H2] To reduce friction between the slip ring assembly 4 of a gyrovertical and a set of pairs of brushes 5, the brushes are mounted on a vibrating block 8. The block is bonded to the centre of a flat spring 11 bolted along its edges to a stationary support bracket 10, the spring having bonded to its other side an armature plate 14 which is intermittently attracted by soft iron studs 19 of an A. C. electromagnet 17, thus vibrating the block 8. The slip rings of the assembly are separated by larger insulating discs 7 and each is engaged by a pair of opposed brushes 5 of different lengths to which connection is made through leads 9 on opposite sides of the block 8.
Patent GB-398725-A (GB)
Title: Improvements in or relating to buffing or polishing devices
IPC: B24D9/00
Filed: 1933-02-09
Abstract: 398,725. Polishing and buffing apparatus. FABREGAT, J. F., 42<bis>, Calle Tapiolas, Barcelona, Spain. Feb. 9, 1933, Nos. 3987 and 3988. Convention date, Feb. 12, 1932. [Class 60.] Polishing and buffing apparatus comprises a rotary drum or a moving belt to which are secured a number of pieces of glass-paper, emery cloth, &c. in the form of arcs, which constitute the polishing-elements. As applied to a polishing-drum, the apparatus comprises a pulley 1, in the rim 3 of which are notches 4 receiving the ends of pieces 5 of glass-paper &c., the ends being held down by cross-pieces 7 locked by radial pins thereon and levers or other means. Each piece 5 has therein one or more backing layers 6 of cloth, leather, rubber, metal, &c., the layers 6 preferably being wider than the rim 3, and the pieces 5 being wider than the layers 6 ; transverse cuts are made in the pieces 5 near their ends to increase their flexibility. In place of the pulley 1, the pieces 5 may be carried by a pair of arms. As applied to belt apparatus, the sand-paper &c. pieces 13, with backing pieces 14, are secured at their ends to stops 11 on a flexible belt 10 by cross pieces 12, and stops 15 are provided within the arcs formed by the pieces 13 and secured to the b It, to prevent contact between the pieces 12 and the work ; the belt runs over two pulleys, and the work is applied to the belt where it runs over one of the pulleys.
Patent GB-1260056-A (GB)
Title: Improvements in astable multivibrators
IPC: H03K3/282
Filed: 1970-01-27
Abstract: 1,260,056. Transistor astable circuits. SOC. INDUSTRIELLE HONEYWELL BULL. 27 Jan., 1970 [31 Jan., 1969], No. 3994/70. Heading H3T.  Both halves of an astable multivibrator contain complementary transistors T1G, T2G (T1D, T2D) wherein T1G has an emitter resistor 14G connected to one potential, T2G has its emitter connected to the other potential - V1; its base connected through resistor 15G (or transistor T3G, Fig. 2, not shown) to - V1 and its collector connected to an output SG and, coupled to T1G base, such as by a diode D2G, this base being connected through a diode D1G to a reference voltage, and T5G emitter being coupled through a capacitor to T1D emitter. In the operation of the Fig. 1 circuit, a switch 17 such as a transistor holds T2D off normally so that T1D base current flows only through DID to maintain a low collector current, T1G and T2G being fully conductive. When switch 17 is opened, T2D conducts and T1D turns fully on, its emitter voltage fall being transmitted by C to turn off T1G, and T2G. After a time determined by C and R14G, T1G emitter will have charged to a level just above - VR so turning on T1G, T2G again. This turns off T1D, T2D, and the cycle repeats. In a modification, a further inverting transistor (T3G, T3D, Fig. 2, not shown) is connected across base and emitter of T2G (and T2D) and has a collector resistor (18G, 18D) connected to the first potential. The base of each further inverter transistor has to be controlled by the collector voltage of the transistor T1D, T1G of the opposite half of the circuit.
Patent GB-163424-A (GB)
Title: Improvements in bale wire tools
IPC: B65B13/28
Filed: 1920-02-10
Abstract: 163,424. Campbell, L. Feb. 10, 1920. Wire, strainers.-A tool for stretching and fastening bale wires comprises a bar 8 with bifurcated end 9 adjacent to which a loop 13 previously formed at one end of the wire is positioned by means such as two pins 15, and a lever 17 pivoted to the bar near the end 9 and carrying wire-gripping means comprising a transverse passage between a fixed block 18, and a pivoted pawl 19, Fig. 1, or between two fixed blocks 24, 25, Fig. 4. The free end 11 of the wire is passed through the loop 13, through the bifurcation in the end 9 of the bar 8, and through the transverse passage on the lever 17, and the wire is strained by rocking the lever away from the end 9 of the bar. The wire is then fastened by turning the bar 8 with the lever 17 about the end 9 of the bar away from the loop 13 and on to the part 11<a> of the wire; and, for further security, the free end of the wire may be bent or twisted b hand about other parts of the wire after removal of the tool.
Patent GB-766301-A (GB)
Title: Corrosionproof pipe of reinforced concrete and a method of its manufacture
IPC: B28B21/94
Filed: 1955-02-11
Abstract: 766,301. Reinforced concrete pipes. NAAMLOOZE VENNOOTSCHAP HANDEL EN INDUSTRIE INDONESIAN PLANNING OFFICE N. V., OINDOPLAN, Feb. 11, 1955 [Feb. 11, 1954], No. 4125/55. Class 99(2) In a reinforced concrete pipe having a thin walled inner tube made up of relatively short lengths or sections of tube made of corrosion proof material the short lengths or sections of the inner tube are hermetically joined together by welding so as to be leak proof and capable of withstanding high pressure. A reinforced concrete pipe comprises inner tubes of corrosion proof material such as stainless steel, aluminium or alloys of light metal having a high resistance to corrosion. Other material such as weldable artificial resins or the like and if required provided in the interior with reinforcing members may be used. The inner tubes are attached to one another so as to form a long tube by welding. Reinforcing rings preferable of steel are then mounted around this tube and reinforcing rods preferably of steel are also disposed around the inner tube. Then a layer of concrete is deposited' so that the reinforcing elements are embedded in it. In Fig. 2 the inner corrosion proof tubes are indicated at 1. Longitudinal reinforcing rods are indicated at 3 and reinforcing rings at 2. A concrete outer layer is indicated at 4 and 5 is an inner layer of concrete. The inner tubes may be provided with strengthening members 6 which are applied as rings of L-section or U-section at a distance of about 3 or 4 feet. The ring reinforcements 2 may be replaced by helices and the inner surface of the inner tube may be provided with a corrosion proof coating or lining. Specification 424,116 is referred to.
Patent GB-1042363-A (GB)
Title: Crystalline, hydrous oxides of zirconium and hafnium and process of making same
IPC: C01G25/02
Filed: 1964-01-31
Abstract: Colloidal, crystalline hafnia or zirconia is produced by refluxing, for at least 24 hours, an aqueous slurry of hydrous metal oxide containing hydrogen, chloride and/or nitrate ions at a pH 0.6 to 3.0. At least a part of the metal oxide in the colloidal suspension is in the monoclinic form.  The size of the oxide particles may be in the range 3 mm  to 20 mm .  A fine crystalline powder may be obtained by precipitation from the sol by acetone addition. This may be used to add refractorimers to ceramics and also as an opacifier in porcelain enamel frits. Examples refer to the use of HCl, HNO3 and zirconyl chloride for reducing the pH.
Patent GB-1022133-A (GB)
Title: Slack adjusters for brakes
Inventor: SOBOL WALDIMAR
IPC: B61H15/00
Filed: 1964-01-31
Abstract: 1,022,133. Slack adjusters. WESTING- HOUSE BRAKE & SIGNAL CO. Ltd. Dec. 15, 1964 [Jan. 31, 1964], No. 4196/64. Heading F2E. In a slack adjuster comprising two relatively telescopic members 8, 9 and a crosshead 35 by which the member 8 is attached to the brake rigging, releasable means are provided to normally prevent relative rotation of the parts 8, 35, but on release the member 8 may be rotated by its hand wheel 92 to permit resetting of the adjuster, particularly when reblocking the brake. The spring 96 biases the hand wheel, through bearing 97, away from the end face 94 of the crosshead. The spring-urged pin 98 is withdrawable by the ring 101 from the handwheel slot 100. The adjuster may be any one of those disclosed in Specification 1,022,132.
Patent GB-305633-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B69/30
Filed: 1929-02-08
Abstract: 305,633. Union Special Maschinenfabrik Ges. Feb. 8, 1928, [Convention date]. Loop-stitching.-The looper is actuated from the needle bar driving mechanism by connections which permit its dwell at the forward end of the stroke to be adjusted. The needle bar g is driven from the main shaft a by a link b, lever r, e and link x. The lever r has a T-slot v in which a stud u is adjustably screwed. The stud u has a ball-head s engaging the socket t on the link q which is pivoted to the lever p, o which is pivoted in turn to the link m which operates the looper i. The ball stud s can be adjusted to vary the dwell of the looper at the forward end of its stroke and the acceleration of the looper at the rear end of its stroke. The lever r and link q form a toggle arrangement such that the ball stud s moves towards or from a line passing through the fulcrum of the lever and the connection of the link q to the lever p. The full lines in Fig. 1 show the position when the looper is at the forward end of its stroke and the broken dash lines when at the rear end. To increase the dwell, the ball stud s is adjusted away from the line passing through the fulcrum of the lever and the connection of the link q to the lever p. To ensure that the looper still oscillates in the same position, the links q and mare adjusted by screwing into or out of the sockets at their ends.
Patent GB-582445-A (GB)
Title: Improvements in or relating to valve mechanism for compressed gas operated electric circuit interrupters
IPC: H01H33/32
Filed: 1944-03-07
Abstract: 582,445. Valves. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. March 7, 1944, No. 4254. Convention date, March 13, 1943. [Class 135] In a quick operating valve for controlling the flow of compressed gas to a circuit interrupter, the main valve 61 is operated by a piston 67 operating in a cylinder 65 to one end of which compressed gas is admitted to open the valve quickly, the piston when it reaches the end of its travel in the valve opening direction opening a passage 131, 133 permitting a unidirectional flow of compressed gas to the other end of the cylinder so that a pressure builds up above the piston 67 which is nearly equal to the pressure below the piston and which when the latter pressure is released aids loading springs 71, 72 to close the valve rapidly. As shown the invention is applied to the blast valve 61 through which compressed air is admitted to the interrupter chamber 21 to extinguish the arc between the fixed and movable contact members 29, 17 when the latter are separated, but it may be applied to the valve controlling the fluid pressure motor 13 which operates the movable contact 17. The motor 13 is supplied through pipes 35, 37, 38 from a tank 31 under the control of a valve (not shown). The tank 31 and the valve mechanism are mounted in a frame 5 below the interrupter proper 11 and insulated therefrom by insulators 7, 9 with gas passages therethrough. The piston 67 is connected with the valve 61 by means of a piston rod 69, a yoke shaped crank lever 63 and an internal rock arm (not shown). The piston 67 is controlled by a piston-operated relay valve 73 itself controlled by an electromagneticallyoperated pilot valve 103. The former comprises a spring loaded inlet valve 87 rigid with an exhaust valve 93 on a piston 91 to the upper side of which compressed gas is admitted from the pilot valve 103 by a passage 113. The pilot valve 103 similarly comprises a spring- loaded inlet valve 107 rigid with an exhaust valve 122, the former being opened and the latter closed when the electromagnet 123 is energized. Compressed gas is admitted to both pilot and relay valves from a main 33 communicating with the tank 31 by a conduit 127 and passages 129, 81, 115. The main 33 has a lateral connection 39 to the main valve 61 whence passages 43, 45 lead to the interrupter chamber 21. The passage 131, 133 comprises a pipe 131 containing a check valve 135 loaded by an adjustable spring and a pipe connection 133 opening into the upper part of the cylinder 65. The end of the pipe 131 is obscured by the piston 67 until the latter reaches the upper end of the cylinder 65. The upper end of the cylinder 65 carries a bumper 137 coacting with a resilient bumper 139 on the piston 67.
Patent GB-779056-A (GB)
Title: Improvements in or relating to bladed or vaned structures for guiding the flow of a fluid
Inventor: BATTLE NORMAN
IPC: F01D25/24
Filed: 1954-02-12
Abstract: 779,056. Turbine guide vane assembly. ROLLS-ROYCE, Ltd. Dec. 2, 1954 [Feb. 12, 1954], No. 4272/54. Class 110 (3). In a nozzle guide vane assembly such as a guide vane assembly of a gas turbine, the vanes are secured at each end in the adjacent parts of supporting structure and each vane has the securing connection at one end at least effected through flexible strip adapted to accommodate relative thermal expansion by bending. The guide vanes 12 which are disposed between rotor blading stages 10, 11 are mounted at their radially inner ends in apertures in rigid annular shrouds 13 and are welded thereto. The outer ends of the vanes pass through apertures in individual flexible strips 17 and are welded thereto. The strips extend beyond the leading and trailing edges of the vanes and are inclined in a direction parallel to the blade chords. The ends of the strips 17 are welded at their ends to annular members 18, 19, the member 18 having a radial flange by which it is bolted to the turbine stator casing 20, while the member 19 engages spigot-wise within the casing 20 and has axial freedom relative thereto. The vanes are hollow and are formed of sheet metal.
Patent GB-634995-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L9/20
Filed: 1947-02-14
Abstract: 634,995. Suction cleaners. ELECTROLUX CORPORATION. Feb. 14, 1947, Nos. 4278, 4279 and 4280. Convention dates, July 18, 1945, Aug. 14, 1945 and Dec. 6, 1945. [Classes 8(i) and 8(ii)] In a motor fan suction cleaner comprising a casing 10 and a dust filter 50, 53 cleaned by agitation, a common actuating member acts to open an air flow path to the fan bye-passing the filter, and to set in operation a filter agitating device responsive to the operation of the fan unit. The filter agitation is effected by an eccentric 28 engaging a filter ring 30 and being driven by the fan motor through a clutch 23 gearing 24, 25, 26, and on depressing a clutch control knob 31 doors 38, (not shown), open to bye-pass the filter during cleaning. Dirt having fallen into a chamber 60 is ejected into a detatchable receptacle 62 by a ram 75 reciprocated by a treadle 87 and levers 90, 91. The receptacle 62 is normally held locked by latching mechanism 64, 65, 71, 67 released by a pedal 72. 14 is an automatic cable reel. In a modification the filter agitating eccentric is driven by a turbine actuated by suction air, and a visible filter clogging indicator is provided which is actuated' by a diaphram open at one side to the suction air inlet and at the other to the fan side of the filter. Cleaner accessories are stored in a compartment above the fan motor unit having a cover hinged to the casing.
Patent GB-511055-A (GB)
Title: An improved radial-stream purifying canister for submarine and anti-gas autorespirators
IPC: A62B19/00
Filed: 1938-02-11
Abstract: 511,055. Respiratory appliances. CARDILE, G., and GARDIOL, E., (trading as I.A.C. SOC. PER L'INDUSTRIA ARTICOLI CAOUTCHOUC E PER MATERIALI PROTETTIVI ED ANTIGAS). Feb. 11, 1938, No. 4418. Convention date, Feb. 13, 1937. [Class 81 (ii)] In closed-circuit or closed-path respiratory apparatus wherein the carbon dioxide absorbent canister is enclosed in the breathing bag, the canister is formed by two coaxial perforated cylindrical walls 5, 4, arranged with their axes horizontal, the respired air passing radially through absorbent material enclosed between the walls. As shown the canister has a solid end wall 2 and removable cover 3 ; the wall 4 is lined with one or more fine gauzes and the wall 5 is of larger diameter at its centre than at its ends. A filling hole 6 in the wall 4 has a flange 7 co-operating with a washer 10 and nut 11 to clamp the edges of a corresponding hole in the breathing bag 8. The canister is filled through the hole 6 with soda-lime 21 and the hole closed by a screw-cap 12. The breathing hose 17 in the case of a valveless closed-path apparatus, or the exhaling hose in the case of a closed-circuit apparatus, is connected by a screw-ring 18 to a screw nipple extension 18<1> of the port 5, and an outer nipple 14<1> receives a flanged nut 14 securing the cover 3, washers. 19, 20, 15, being provided between the engaging parts. The abutting edges of the wall 4 and the cover 3 are flanged to clamp between them bead 13 on the breathing bag 8.
Patent GB-1101627-A (GB)
Title: Defoamant composition and process
Inventor: EVANS JOHN IDRIS
IPC: B01D19/04
Filed: 1966-02-01
Abstract: A solid defoamant composition comprises (1) a water-insoluble emulsifying agent, (2) a liquid organopolysiloxane defoaming agent and (3) a water-insoluble wax having a M.P. above 80 DEG  C. Ingredient (1) is preferably a self-emulsifying wax having a drop point above 45 DEG  C., e.g. reaction products of stearyl alcohols and polyethylene glycols.  Ingredient (2) is a liquid siloxane or a siloxane paste, e.g. liquid dimethylsiloxane containing 1 to 10% by wt. of SiO2.  Ingredient (3) can be a polyethylene wax having a M.W. above 3500, or a derivative of Montan wax. Preferably the composition consists of (by wt.), 15 to 60% of (1), 15 to 35% of (2), and 25 to 50% of (3).  The composition is preferably made by heating, with stirring, the 3 ingredients to at least the M.P. of the ingredients, and, if desired, allowing the resulting mixture to solidify in moulds.  Examples of the above compositions are given.  Uses: for preventing or reducing the generation of foam in aqueous media at above 40 DEG  C. (see Division B1).ALSO:The generation of foam in an aqueous medium maintained at a temperature above 40 DEG C is prevented or reduced by contacting the foam or the aqueous medium with a solid defoamant composition comprising (1) a water-insoluble emulsifying agent, (2) a liquid organopolysiloxane defoaming agent and (3) a water-insoluble wax having a M.P. above 80 DEG C (see Division C3).  The emulsifying agent (1) may be a self-emulsifying wax.  The preferred de-foaming agent (2) is a combination of a dimethylpolysiloxane with from 1% to 10% by weight of finely-divided silica.  The wax (3) may be a polyethylene or montan wax.  Preferred proportions are:-(1) 15% to 60% by weight; (2), 15% to 35% by weight; (3) 25% to 50% by weight.
Patent GB-104055-A (GB)
Title: An Improved Wire Bending and Forming Machine.
Inventor: SADLER FLORENCE
IPC: B21F1/00
Filed: 1916-03-28
Abstract: 104,055. Sadler, F. March 28, 1916. Angular bending.-One or more pieces of wire are placed in a slot 7 in a block 6 with their ends against the adjustable stop 8, and are then bent by tools 5 carried by levers 3. The shape of the tools 5 and block 6 may be varied, and the block may be replaced by a round or other shaped peg. The bent wires may fall through an opening (not shown) in the bed-plate 1.
Patent GB-1103302-A (GB)
Title: An improved electric brake
IPC: B21C47/00
Filed: 1965-02-02
Abstract: 1,103,302. Electromagnetic brakes. ALGEMENE KUNSTZIJDE UNIE N.V. 2 Feb., 1965 [12 Feb., 1964], No. 4540/65. Heading H2A. [Also in Division D1] An electric brake has a laminated rotor 4 with a squirrel cage winding 9 deeply embedded in the laminations which have radial slits 12 extending from the winding conductors to the air gap 7, and a stator 5 which provides a unidirectional magnetic field through the rotor. The motor is built up from insulated laminations with the copper bars 9 of the squirrel cage embedded half-way between the inner and outer peripheries of the lamination stack. The bars of the squirrel cage may extend helically along the length of the rotor. The parts are stated to be dimensioned such that the product of torque and speed is constant. The stator may have windings 6 supplied from a variable D.C. source or alternatively permanent magnets may be used to provide the magnetic field. It is stated that the brake is especially suitable for applications where a sheet or thread is unwound from a carrier.
Patent GB-608002-A (GB)
Title: Improvements relating to horizontal retorts for the carbonisation of coal and the like
IPC: C10B43/06
Filed: 1946-02-13
Abstract: 608,002. Cleaning pipes. BISSET, A. R. Feb. 13, 1946, No. 4552. [Class 99 (ii)] Means for cleaning the ascension pipe b attached to the mouthpiece of a horizontal retort comprises a ring- like or annular plunger or cutter a of considerable weight through which gas can flow, which is suspended in said pipe and is adapted to be raised at intervals and then freed to drop through the full length of the pipe to the retort mouthpiece so that the cutting edge c scrapes the internal pipe surface. Three arms a<1> extend up from the plunger to the central boss a<2> to which the wire rope suspension d is attached. The ropes from several plungers in a retort bench may pass on to winches on a common overhead shaft.