baber/WOPTO huggingface dataset:
Patent GB-586570-A (GB)
Title: Improvements in internal combustion turbine plant for propulsion
IPC: F02C3/067
Filed: 1943-03-18
Abstract: 586,570. Gas turbines. BAUMANN, K., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. March 18, 1943, No. 4447. Addition to 586,558. [Class 110 (iii)] Contra-rotational turbine rotors I, II drive contra-rotational tractor airs crews 6a without the intervention of speed-reduction gear. If the air-screws are designed to run at different speeds or if a single tractor air-screw is driven by contrarotational rotors designed to run at different speeds, the necessary gear for these purposes is installed. The annular air intake 1a of the air compressor 1 takes air'through the inner region of the air-screws.
Patent GB-1217325-A (GB)
Title: Reaction control by adiabatic calorimetry
Inventor: HENDY BRIAN NORMAN
IPC: G01N31/00
Filed: 1967-01-30
Abstract: 1,217,325. Measuring reaction rate. IMPERIAL CHEMICAL INDUSTRIES Ltd. 30 April, 1968 [30 Jan., 1967], No. 4478/67. Heading B1X. The rate of a chemical reaction is measured for use for example in controlling polymerisation reactions by a method comprising temporarily isolating a sample of the reaction mixture and maintaining it under adiabatic conditions while measuring its change of temperature with time. For intermittent testing, in the embodiment of Fig. 1 (not shown), an insulated dip-leg (1) containing a thermometer (3) is immersed in the reaction mixture. In the embodiment of Fig. 2 (not shown), a sample is sucked from the reaction vessel into an insulated testing vessel, and returned to the reaction vessel after testing. For continuous testing, for example using the apparatus shown, material from the reaction vessel is continuously pumped at a constant rate round an insulated by-pass circuit having thermometers 38 at the inlet and 39 at the outlet of the testing tube 31. The flow is adjusted to give the required residence time in tube 31 and may be checked by collecting the outflow for measurement in flow rate check 37. In copolymerisation processes in which the monomers have different rates of polymerisation, the reaction rate may be determined as above then used to control the rate of feed of at least one of the monomers.
Patent GB-1504121-A (GB)
Title: Manually or pedally propelled vehicles such as bicycles
IPC: B62M6/70
Filed: 1974-01-31
Abstract: 1504121 Power assisted vehicles RALEIGH INDUSTRIES Ltd 23 Jan 1975 [31 Jan 1974] 04510/74 Heading B7H [Also in Division H2] A vehicle for conveying a rider, particularly a cycle, manually propelled by pedal or manual effort is provided with auxiliary power means which is insufficient to propel the cycle by itself but which is actuated to assist propulsion by control means sensitive to the riders effort, the auxiliary power being switched on when the effort reaches a predetermined value. In one embodiment, Fig. 1, the cycle chain is trained about a spring biased sensor sprocket 6 and a motor drive sprocket 5. On pedalling the chain tension increases and at a predetermined value moves the sensor sprocket down against spring 7 to close switch 9 to supply power from the battery 1 to the motor 2. The spring tension is adjustable by handwheel 8, and the electrical circuit includes a switch 10 which closes only when a rider is seated. As pedal effort ceases the sensor sprocket moves upwardly and disconnects power to the motor. A delay device may be included in switch 9 to prevent rapid opening and closing in response to short term pedal effort. The delay device may be such that motor current is cut-off only when the pedal force has diminished to a level which is a given amount below the force which caused switch 9 to close. In another embodiment (Fig. 3, not shown) the relative fore-and-aft positions of the drive and sensor sprockets are reversed, the chain passing over the drive sprocket and under the sensor sprocket, the latter being moved up to close switch 9. Provision may be made for automatic recharging of the battery during, for example, down-hill running. The drive sprocket 5 is free to rotate in either direction when motor 2 is not running. Motor 2 has an output worm 14 meshing with wheel 15 freely mounted on shaft 16. A clutch slider 20 splined to shaft 16 is movable by a linkage 22 to engage ratchet dog clutch 27 on the wheel 15 to drive the shaft and sprocket 1, the linkage being actuated by the sensor sprocket.
Patent GB-909091-A (GB)
Title: Pneumatically operated tube expansion control
IPC: G05G15/08
Filed: 1959-02-10
Abstract: 909,091. Shaft couplings. AIRETOOL MFG. CO. Feb. 10, 1959 [July 16, 1958], No. 4547/59. Class 80 (2). [Also in Group XXII] A spindle 21 of a tube expander is driven by an air motor through torque sensing coupling means whereby axial movement of a coupling member dependent upon the attainment of a predetermined torque causes a valve to shut off the motor. The spindle 21 is rotated through a coupling 118, 126 by a spider 103 driven, through reduction gearing, by a rotor to which pressure air is supplied through a passageway 70a. The coupling member 118, Fig. 6, which is secured to the spider 103 has three helically-edged axial projections 122 which co-operate with similar projections on the coupling member 126, balls 125 being provided between the opposing helical edges. The member 126 is urged towards the member 118 by an adjustable spring 134 and is keyed to the spindle 21 by balls 115 engaging V grooves in the spindle and the clutch member. In operation increase in torque consequent on completion of tube expansion causes the coupling element 126 to move back against the spring 134 and rock a member 162. This allows a spring to close a valve 171 in the passage 70a and stop the motor.
Patent GB-138716-A (GB)
Title: Improvements in the construction of reinforced concrete floors
IPC: E04B5/26
Filed: 1919-02-24
Abstract: 138,716. Barraclough, H. L. Feb. 24, 1919. Addition to 120,536. Reinforced-concrete floors; girder floors; girders and beams.-In the floor described in the parent Specification, the webs of the inverted-T-shaped girders are provided with side fillets or projections A<3> for supporting blocks or plates B, above which concrete is cast in situ. Specification 120,526 is referred to in the Provisional Specification.
Patent GB-1214287-A (GB)
Title: Switching-mode voltage and current regulator
Inventor: ALLINGTON ROBERT W
IPC: G05F1/455
Filed: 1969-01-28
Abstract: 1,214,287. Automatic voltage and current control. INSTRUMENTATION SPECIALTIES CO. Jan.28, 1969 [Oct.29, 1968], No.4634/69. Heading G3R. In a constant voltage or current system, a power transformer 10 is connected to a rectifying voltage multiplier 18 through a phase-controlled thyristor 20, the output of the multiplier being associated with a further regulator stage comprising a transistor 24. When switch 16 is positioned for constant voltage operation, negative feedback is derived from resistor 27, amplifier 28, and the transistor 24. The output voltage is adjusted by an offset voltage from potentiometer 30 applied to the amplifier 28. For constant current operation, negative feedback is obtained from resistor 25. When the collector-potential of the transistor 24 drops below a desired value, transistors 38, 39, conduct to charge capacitor 41. The emitterpotential of transistor 37 increases until diode 40 breaks down to render transistor 36 conductive. The thyristor 20 is then triggered through pulse transformer 43. As the collector-potential of the transistor 24 decreases, the triggering-instant of the thyristor is advanced to increase the voltage applied to the multiplier and to restore the collector -potential to its desired value. Diodes 43-45 and resistor 46 form a network for resetting the charge on capacitor 41 to zero at the end of each halfcycle of the supply voltage.
Patent GB-774737-A (GB)
Title: Improvements in or relating to the manufacture of organic halogen compounds
Inventor: MURAY JAN
IPC: C07C17/04
Filed: 1955-02-17
Abstract: Fluorochlorobutanes are obtained by the action of chlorine trifluoride or chlorine monofluoride or both these simultaneously or successively in either order on tetrachlorobutadiene ; mixed products are obtained.  The initial mixed product from the action of ClF3 may be treated with ClF to give further pentafluoropentachlorobutane or hexafluorotetrachlorobutane.  In examples, tetrachlorobutadiene is treated with ClF3 mixed with nitrogen at first, and the product fractionated, or further treated with ClF, giving products containing hexafluorotetrachloro-, pantafluoropentachloro-, and tetrafluorhexachloro-butanes ; the two former are also produced by the action of ClF directly on tetra-chlorobutadiene.  The products may be dechlorinated, e.g. with alcohol and Zn dust, to give tetrafluorodichloro-, hexafluoroand pentafluoromonochloro-butadiene.
Patent GB-577799-A (GB)
Title: Improvements in or relating to air intakes for internal-combustion engines
IPC: B64D33/02
Filed: 1943-03-25
Abstract: 577,799. Air intakes for carburetters. BRISTOL AEROPLANE CO., Ltd., and CUTTS, J. March 25, 1943, No. 4848. [Class 7 (iii)] An air intake for a carburettor comprises three air inlets, one of which supplies heated air, and a control means, adapted to adjust a valve selectively to one of two positions to permit either of the other two air supplies to pass to the engine and simultaneously to vary the freedom with which a valve automatically controlling the inlet of heated air, operates. Cold air is supplied to a common intake tube 16 for a. carburetter 14 either from a forwardly facing scoop 17 when a visor-shaped valve 25 is in the position shown or through a pssage 18 housing a filter 22 when the visor 25 is turned anti-clockwise through 90‹, the visor in either case directing the air into the tube 16. Air heated by passage around the engine cylinders enters the tube 16 past a flap valve 26 normally held closed by a spring 32 connected at its remote end to one arm 31 of a lever of which the other arm 28 is connected to the control lever 30 of the visor 25. As shown, the spring 32 exerts very light pressure on the flap valve 26 and the valve opens to admit the stream of heated air, but when the visor 25 is turned to admit filtered air, the tension of the spring 32 is increased and the heated air can no longer open the valve. When the spring 32 is operating lightly, it may be overridden and the valve be opened manually by a control lever acting through a spring having a tension intermediate between the tensions of the spring 32. in its two operative positions. As shown, the passage from the scoop 17 through the tube 16 increases in cross section towards the carburettor to convert the dynamic pressure of the air at the scoop to a static pressure in the tube 16. This pressure resists the opening of the valve 26, but if the scoop becomes clogged with ice &c. this pressure falls off, the valve 26 opens more readily and additional heated air is supplied to the engine.
Patent GB-1041502-A (GB)
Title: Improvements in or relating to shaft bearings with control switches for cutting-out or reversing the drive means for the shaft
IPC: B23Q11/04
Filed: 1965-02-04
Abstract: 1,041,502. Lathes. F. ELLER. Feb. 4, 1965 [Feb. 22, 1964], No. 6851/65. Headings B3B and B3T. [Also in Divisions B8 and F2] A bearing assembly comprises a shaft 1, e.g. a lead screw or worm conveyer, journalled in two axial-thrust ball bearings 12 in a shaft bearing plate 4, the plate being movable along supporting bolts 8 which extend between stationary thrust plates 7 and being spring- loaded on at least one side against at least one of the thrust plates and carrying an actuator to actuate a control switch which stops or reverses the shaft when the shaft is axially overloaded. In the embodiment of Fig. 1 (not shown) two fingers 6 operate respective levers 13 of switches 3 when the shaft, bearings and plate are axially displaced against the force of respective springs 5. Alternatively a finger 6A operates levers 13A on a single switch 3A. The switches are adjustably secured on a slideway. If overload is in one axial direction only, as in Fig. 2 (not shown), strips are required on one side only, and one switch 3 or a switch 3A with one lever only, required.
Patent GB-1180854-A (GB)
Title: Improvements in or relating to Azo Coloring Materials and Processes for their Preparation
Inventor: ORELUP RICHARD BRADLEY
IPC: C09B35/14
Filed: 1968-01-31
Abstract: 1,180,854. Coloured compositions. R. B. ORELUP. 31 Jan., 1968 [24 Oct., 1967], No. 4867/68. Headings C3F and C3Q. [Also in Divisions C4-C5] Colouring compositions comprise 50-75% by wt. of an azo compound containing in the molecule a C 5 -C 12  alkyl beta naphthol or a p-C 5 -C 12  alkyl phenol group, and 50-25% of an organic liquid. In Example VI an orange azo compound in xylol is compounded with ethyl and amyl acetates, diacetone alcohol, nitrocellulose, dioctyl phthalate and maleic alkyd resin to form a lacquer; in Example VIII an ink is made from a red azo compound, chlorinated rubber, zinc rosinate, and xylol and/or naphtha.
Patent GB-810451-A (GB)
Title: Improvements in or relating to ferroelectric signal storage devices
IPC: H03K3/45
Filed: 1956-02-17
Abstract: A guanidinium alum comprises a compound or mixture of compounds of the formula (CN3H6)+M+++(R-)2.6H2O in which M+++ represents a trivalent cation such as trivalent Al, Ga, In, Ti, V, Fe, Cr, Co, Mn, Rh or Ir, and R- represents a divalent anion such as SO4-, SeO4- or BeF4-.  The hydrogen in the water of crystallization or in the guanidinium radical may be replaced by deuterium.  The alums may be obtained as trigonal crystals from a saturated solution prepared by mixing stoichiometric amounts of (CN3H6)2R and M2R3 in water. Specified alums are hexahydrates of guanidinium gallium sulphate, guanidinium chromium sulphate, guanidinium aluminium sulphate, guanidinium aluminium selenate, guanidinium gallium selenate, guanidinium indium sulphate, guanidinium titanium sulphate, guanidinium vanadium sulphate, guanidinium iron sulphate, guanidinium cobalt sulphate, guanidinium manganese sulphate, guanidinium rhodium sulphate, guanidinium iridium sulphate, guanidinium indium selenate, guanidinium aluminium fluoberyllate, guanidinium iron selenate, guanidinium chromium selenate, guanidinium cobalt selenate, guanidinium manganese selenate, guanidinium rhodium selenate and guanidinium iridium selenate. Specifications 622,113, [Group III], 787,444, [Group XXXVIII], and 810,452, [Group XXXVI], are referred to.
Patent GB-908330-A (GB)
Title: Improvements in aluminum strip electrical coils
IPC: H01F41/12
Filed: 1961-02-10
Abstract: 908,330. Electric coils; inductances. ANACONDA ALUMINUM CO. Feb. 10, 1961 [Feb. 25, 1960; Jan. 4, 1961], No. 5033/61. Classes 35 and 38 (2). [Also in Group XXXVI] Electrically insulated aluminium strip, suitable for use in winding electrical, coils, is made by applying a continuous dielectric coating to at least one side of the strip, cutting the strip into narrower strips, winding the narrower strips into rolls and treating the end faces of the rolls, e.g. by anodizing, to form continuous oxidic dielectric films on the cut edges. The continuous dielectric coating may be organic, e.g. varnish or lacquer, a polyvinyl acetal or a silicone enamel and may be coated on the strip by applicator rolls. Alternatively, the coating may be inorganic, e.g. an anodic film. In anodizing to produce a film on the cut edges, the electrolyte may be chromic, sulphuric, oxalic phosphoric or sulphamic acid or caustic alkali. Low voltage D.C. or sometimes A.C. is passed through the bath using a lead or stainless steel cathode. During electrolysis, small slivers and burrs are removed from the edges and the oxide film is formed. To prevent organic coatings on a coil from plasticizing in hot solutions and to prevent electrolyte from entering between the turns of a coil during anodizing, the turns may be sealed by a compound such as a hydrocarbon oil either by wiping it on the strip before coiling it or by pressing the faces of the coil against a pad saturated with the compound. Before anodizing, the sealing material is removed from the edges, e.g. in a bath of caustic solution. After anodizing, the finished rolls may be submerged in a hot water rinse. The rolls may be rewound.
Patent GB-127309-A (GB)
Title: Process for the Recovery of One or More of the Volatile Bodies Ether, Alcohol, Acetone, from Gaseous Mixtures.
Inventor: DANIEL ARISTIDE
Filed: 1917-04-11
Abstract: 127,309. Daniel, A., and Bregeat, J. H. July 8, 1916, [Convention date]. Volatile liquids, recovering.-Alcohol, ether, or acetone are recovered from gaseous mixtures containing them, for example in the manufacture of artificial silk, explosives, or artificial leather, by absorption in phenol or its hornologues, e.g. crude cresols, and subsequent distillation and condensation. Using the apparatus shown, the vapours are washed by a counter-current of cresols in washers B<1>, B<2>, B<3>; the cresol charged with alcohol &c. is pumped to a reservoir R<2> and passes through a heat-exchanger D to a steam heater E and still F; the vapours liberated in the vessels E, F are condensed in the condenser G and flow to a separator H; the cresol returns through the heat-exchanger D, cooler I, and vessel J to the tank A for re-use. Instead of cresols, mixtures containing them may be used.
Patent GB-1511828-A (GB)
Title: Electrically operated household appliance such as a food chopper
IPC: A47J43/07
Filed: 1977-02-08
Abstract: 1511828 Domestic mixers MOULINEX SA 8 Feb 1977 [10 Feb 1976] 05149/77 Heading B1C A domestic appliance having electrically rotated cutters 20 in a bowl 12 has a cover 14 in two parts connected telescopically, a cap 32 which closes the bowl and a skirt 30 displaceable between an upper position, and a lower position in which it actuates key(s) 26, 28 which close the motor switch(es) 22, 24. The arrangement enables the bowl to remain closed whether the motor be operating or not.
Patent GB-894373-A (GB)
Title: Improvements in or relating to electric lamp fittings
IPC: F21S8/06
Filed: 1960-02-12
Abstract: 894,373. Electric light fitttings. COMRAS, E. N. Jan. 2, 1961 [Feb. 12, 1960], No. 5172/60. Class 75(3). In an electric lamp fitting of the type which includes a member supporting two or more tubular arms through which electric leads pass to the lamp sockets, the member supporting the arms includes a plate or skirt having a like number of slots to the number of arms and each arm is provided with a block having parallel grooves on opposite faces so that the block can be slidably positioned within one of the slots and having a passage therethrough which communicates with the interior of the arm. In the form shown, a plate 10 is suspended from the ceiling by a rod 11 and has slots 12 at the edges to receive grooved blocks 14 on which the arms 13 are mounted. The blocks are bored at 16 to communicate with' the interior of the arm 13. In a modification, the slots are formed in a skirt upstanding from the plate. In another form, the plate has apertures consisting of a rectangular part corresponding to the slots 12 and a larger rectangular part through which the blocks can be inserted for sliding into the smaller part. The blocks are then secured in position by means of a second plate having a radius equal to the distance of the inner ends of the slots from the centre of the first plate.
Patent GB-666128-A (GB)
Title: Improvements in or relating to rolls for beaters, breakers or the like for preparingpulp for paper-making
IPC: D21D1/02
Filed: 1948-02-23
Abstract: 666,128. Making cased rollers. BERTRAMS, Ltd., and ALLAN, J. Feb. 22, 1949 [Feb. 23, 1948], No. 5237/48. Classes 83 (ii) and 83 (iv). [Also in Groups VIII] Uniting by fusion.- A roll for a beater, breaker or the like for preparing pulp for papermaking comprises a body or core, a sheath secured thereto under high tension, and working bars secured to the outer surface of said sheath by welding. As shown, working bars d of medium carbon steel are welded at d<SP>1</SP> to a sheath c also of medium carbon steel secured under tension to a hollow cast-iron core a by welding, as described in Specification 644,590. End-plates e enclosing the core ends may be welded to the sheath. Alternative metals for the sheath, working bars and end-plates are low carbon steel, stainless steel, nickel, nickel or stainless clad steel, or bronze. The sheath may be formed from two or more longitudinal or transverse sections, the core being provided with complementary longitudinal or circumferential grooves for the welded joints. The bars may be welded to the sheath before or after application of the sheath to the core, the sheath being provided with formations to receive and locate the bars prior to welding.
Patent GB-491013-A (GB)
Title: Improvements in or relating to apparatus for electrolytically decomposing liquids under pressure
IPC: C25B9/19
Filed: 1937-02-22
Abstract: 491,013. Electrolytic cells. OLSEN, H. Feb. 22, 1937, No. 5278. Convention date, Feb. 20, 1936. Addition to 466,563. [Class 41] An electrolytic cell for decomposing liquids under pressure comprises cylindrical double walled electrodes constituting chambers for the collection of one of the gases, e.g. oxygen; the outer wall a of each electrode is perforated and is surrounded by a diaphragm b which is surrounded by a sheet c of metal fabric spliced, preferably along a seam parallel to the axis, to maintain its cylindrical form. Spacing members e are arranged between the electrode assemblages. The double-walled electrodes are made by welding the two walls at the top over a metal wire d or strip. The perforated wall a may also consist of a longitudinally spliced metal fabric.
Patent GB-805067-A (GB)
Title: Improvements in and relating to steam generators
IPC: F22B21/36
Filed: 1955-02-22
Abstract: 805,067. Water - tube steam boilers. VORKAUF, H. Feb. 22, 1955 [Feb. 22, 1954], No. 5281/55. Class 123(2) In a water-tube steam boiler comprising a furnace 4 having its front and rear walls lined with generating tubes 3, 6 extending respectively from lower distributers 2, 9 to a common collector 5 disposed at the same level as the boiler steam and water drum 1, the collector serves as a preseparator for the steam-water mixture, the ends of the collector being connected by horizontal tubes 7 to the drum 1 and by downtubes 8 to the distributer 9. Steam-water mixture entering the collector from the tubes 3 travels outwardly to the ends thereof, some steam separation occurring in the collector and in the spaces, see Fig. 2, above the water level in the downtubes so that a mixture of low water content flows to the drum through the tubes 7. The down-tubes 8 may be extended upwardly to form steam offtake tubes which are connected to the drum 1 by pipes 19. Separated water returns directly to the distributer 9 through the tubes 8, bypassing the drum. The boiler also includes a convection section 10 discharging steamwater mixture into a similarly arranged preseparator-collector 12. The distributers, collectors, down-tubes and delivery pipes7 collectors, down-tubes and delivery pipes 7 form a frame supporting the weight of the boiler.
Patent GB-849782-A (GB)
Title: Improvements in or relating to jib cranes
Inventor: MITCHELL HARRY
IPC: B63B57/00
Filed: 1958-02-18
Abstract: 849,782. Portable jib cranes. HOPKINSON & CO. Ltd., A. Feb. 12, 1959 [Feb. 18, 1958], No. 5282/58. Class 78 (4). A portable jib crane has a frame 10 which is capable of spanning a hatch c of a ship. As shown the jib 12 is pivoted to lugs 10a so that it can fold against the frame, and is normally held erect by struts 13 terminating in shoes 14 secured to the frame by removable pins 15. A platform 20 for supporting a drum D can turn about a hinge 21 or, alternatively, may slide or run on wheels along the frame. The frame is provided with turned up ends 11 for easy manhandling. The struts 13 may be replaced by links pivoted to the jib and to the shoes 14 so that the angle of the jib may be altered by pinning the shoes 14 in different positions along the frame.