baber/WOPTO huggingface dataset:
Patent GB-1120658-A (GB)
Title: Power plant for a helicopter
Inventor: GILBERT RONALD ALBERT
IPC: B64C27/14
Filed: 1967-04-20
Abstract: 1,120,658. Helicopters. ROLLS-ROYCE Ltd. 20 April, 1967, No. 18300/67. Headings B7G and B7W. [Also in Division F1] A power plant for a helicopter comprises a gas turbine engine having a free turbine, a shaft drivingly connected to a fan (which may be a propeller), mechanical drive means for mechanically rotating a helicopter rotor, and speedsensitive clutch means for transmitting drive from the free turbine either to the mechanical drive means or to the shaft in dependence upon whether the rotational speed of the free turbine is respectively below or above a predetermined value. The engine shown is of the two-spool type comprising LP compressor 31, HP compressor 32, combustion equipment 33, HP turbine 34, LP turbine 35 and a separate power turbine 36, the HP turbine being connected to the HP compressor by means of shaft 40 and the LP turbine being connected to the LP compressor by means of shaft 41. The LP rotor assembly including shaft 41 is connected at its forward end to a shaft 42 which is connected through reduction gearing 44 to a ducted fan assembly 43 comprising fan blades 45 disposed in duct 47, the duct being supported by means of struts 50, 51. The power turbine 36 is connected to drive a helicopter rotor by means of shaft 53, gearing 55, shaft 54, speed-sensitive unidirectional clutch 60 and shaft 20. The power turbine is also connected to drive the ducted fan 43 by means of speed-sensitive unidirectional clutch 61 and shaft 41 of the LP rotor assembly, the arrangement being such that the clutch 60 is engaged when the speed of the power turbine is below a predetermined value so that the lift rotor is driven. When the aircraft reaches the required altitude, the pitch of the lift rotor blades is reduced so that the speed of the shaft 20 will tend to increase so that the clutch 60 becomes disengaged. The clutch 61 now becomes engaged as a result of the increased speed of the power turbine and the power turbine will now drive the fan 43. The fan was previously being driven by the LP rotor assembly but the fan blades were in fine pitch. In forward flight the lift rotor will auto-rotate, the aircraft being also provided with fixed wings to provide lift during forward flight. The helicopter shown comprises two lift rotors 11, 12 and two engines 22, 23, the engines being connected by shafts 20, 21 to a gear-box 17, the lift rotors being connected to the gear-box 17 by shafts 14, 16, 13. The fixed wings are shown at 26, 27.
Patent GB-1222574-A (GB)
Title: Method of and apparatus for accurately positioning of supports relative to the cutting line in the cutting-up of castings from continuous casting machines
IPC: B22D11/126
Filed: 1968-04-18
Abstract: 1,222,574. Cutting continuous castings. MESSER GRIESHEIM G.m.b.H. and DEMAG A.G. 18 April, 1968 [18 April, 1967], No. 18327/68. Headings B3F and B3V. [Also in Division B5] A cutting machine 6 moves synchronously with a continuously cast strand 1 as the latter is moved over a fixed roller bed 2, 3, 4 and is borne by a chain of linked supports 20 which may form an endless chain 5 rotated by driving wheels 13, 14 as shown or may form an open reciprocated length of chain; in order to align the strand point C to be cut (by saw or oxygen jet 12 of the cutter) with the mid-point of a gap between two adjacent supports to avoid damaging the supports, the rear driving wheels 13 are retarded or accelerated before cutting is started to open out or crowd the supports 20 before the starting position B of the cutter 6. The chain 5 comprises strand-supporting bars 20 with links 18a or 18b at their ends. The axles of supporting rollers (which run in rails over the strand-supporting region) pass through circular holes in links 18b and slots in the alternate bifurcated links 18a, to permit the relative opening out or crowding of the chain parts. Instead the links may be connected by springs. A throughput-measuring device 8 measures the distance from a cut A to the new point C to be cut and causes an associated feeler 11 to check the position of the supporting bar 20a which is nearest the point B. If, as shown, this is too near the point B, this would mean that a following bar 20b would be in the same position when C coincided with B. To avoid this, a signal is automatically sent to accelerate the drive of the wheels 13.
Patent GB-932718-A (GB)
Title: Combined gas turbine and steam turbine power plant
Inventor: CARR FREDERICK
IPC: F01K23/10
Filed: 1960-05-24
Abstract: 932,718. Combined gas-turbine and steamturbine power plant. HEAD, WRIGHTSON & CO. Ltd. May 24, 1961 [May 24, 1960], No. 18344/60. Class 110 (3). A turbine plant comprises a first gas-turbine 1 driving a compressor 2, a second gas-turbine 5 receiving gases from the first turbine and driving a useful load 6, the exhaust gases from the second turbine being passed through a heat-exchanger 8 to generate steam at high pressure, the steam being utilized in a steam turbine 11, the steam exhausting from the turbine either being fed back to mix with the gases in the combustion chamber 3 or being passed through a second heat-exchanger 13 to generate steam which is mixed with the gases in the combustion chamber. The object of the second arrangement is to conserve the high quality feed water, the steam mixed with the combustion gases which is eventually discharged to atmosphere being generated from lower quality feed water. In Fig. 1, water is supplied by a pump 9 and line 10 to the heatexchanger 8, the high-pressure steam generated therein being fed to the steam turbine 11, the exhaust steam from which passes through line 7 to mix with the gases from the combustion chamber 3. The gas and steam mixture passes successively through the turbines 1, 5 and heatexchanger 8 before discharging to atmosphere. In Fig. 2, the steam turbine operates on a closed circuit, steam exhausting from the turbine 11 passing through a heat-exchanger 13 wherein low-quality feed water supplied by pump 15 and line 14 is converted to steam which passes through lines 14<SP>1</SP> and 7 to mix with gases from the combustion chamber 3, the gas and steam mixture passing successively through the turbines 1, 5 and heat-exchanger 8 and finally discharging to atmosphere.
Patent GB-1089920-A (GB)
Title: Process for preparing hydroxycycloalkanones
IPC: C07C49/493
Filed: 1966-04-27
Abstract: Compounds of the formula <FORM:1089920/C2/1> are prepared by subjecting a compound of formula <FORM:1089920/C2/2> wherein R1 represents a hydrocarbon group (which may also carry one or more functional groups) of 4-18 C atoms and n = 1 or 2, to the action of a reducing enzyme produced by cultures of micro-organisms containing Fungi imperfecti, actinomycetales, yeasts or Bacteriaceoe. The following compounds are also claimed per se; optically active 1b -hydroxy-3-oxo - 2 - methyl - 2 - (31 - oxo - 61 - carboalkoxy)-hexylcyclopentanes, especially the 61-carbomethoxy compounds; (-)1b -hydroxy-3-oxo-2b -methyl - 2a  - (31 - oxo) - butyl cyclopentane; (+)1b  - hydroxy - 3 - oxo - 2 - methyl - 2 - (31-chlorobut -21-ene) - yl - cyclopentane; (-)14-oxo-17 - hydroxy - 3 - methoxy - 8,14 - seco - estra-1,3,5(10),9(11) -tetraene and the internal hemiacetal of 1-hydroxy-3-oxo-2-methyl-2-(31-oxo)-butyl-cyclohexane.  1,3 - Dioxo - 2 - methyl - 2 - (31 - chlorobut - 21-ene)-yl-cyclopentane is prepared by the reaction of 1,3-dichlorobut-2-ene with 1-pyrrolidyl-2-methyl-3-oxo-1 -cyclopentane in a solution of KI in dimethylformamide.  1,3 - Dioxo - 2 - methyl - 2 -(31 - oxo - 61 -carbomethoxy)-hexyl cyclopentane is made by condensing methyl 5-oxo-hept-6-enoate with 1,3-dioxo-2-methyl cyclopentane.  1,5 - Dioxo - 4 -(21 - carboxyethyl) - 7a-methyl-5,6,7,7a -tetrahydroindane is made by oxidizing, with chromic acid, 1-hydroxy-4-(21-carbomethoxyethyl) - 5 - oxo - 7a - methyl - 5,6,7,7a - tetrahydroindane, which is itself prepared from 1 - hydroxy - 3 - oxo - 2 - methyl - 2 - (31 - oxo-61 -carbomethoxy)-hexyl cyclopentane, by cyclization.  1 - Hydroxy - 5 - oxo - 7a - methyl - 5,6,7,7a - tetrahydroindane (A) is prepared by hydrolysis of its p-nitrobenzoate which is prepared by cyclization of the p-nitrobenzoate of 1-hydroxy-3-oxo - 2 - methyl - 2 - (31 - oxo) - butyl cyclohexane which is itself prepared by esterification of the free-hydroxy compound with p-nitrobenzoyl chloride.  Compound (A) is also prepared by cyclization of 1-hydroxy-3-oxo-2-methyl-2-(31-oxo) -butyl cyclopentane.
Patent GB-1212794-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02M69/28
Filed: 1968-04-18
Abstract: 1,212,794. Regulating I. C. engines. ROBERT BOSCH G.m.b.H. April 18, 1968 [April 19, 1967], No. 18361/68. Heading F1B. A sleeve 15 slipped on to one end 20 of the shaft 4 of a butterfly valve 2 in an I. C. engine intake manifold 1 is mounted in a housing 5, 6 secured to the manifold and a member 17, 18 is coupled to the sleeve for actuating a switch 13. The switch may be arranged to reduce or cut off the fuel supply of a petrol injection fuel-air mixture compression engine when the valve 2 is closed or substantially closed or allow an electrically controlled clutch to connect the engine and driving wheels of a vehicle only when the valve is opened beyond a predetermined angle. The sleeve 15 is non- rotatably connected to the shaft end 20 by a leaf spring 19 between the sleeve and the flattened part of the shaft end. The housing part 5 is secured to the manifold 1 by screws 23 engaging in arcuate slots 22. The switch 13 is connected in series with a bi-metallic temperature switch 12.
Patent GB-752156-A (GB)
Title: Improvements in or relating to oxide magnets
IPC: C04B35/26
Filed: 1954-06-23
Abstract: 752,156. Magnetic compositions. BUFFET, P. June 23, 1954 [July 9, 1953], No. 18444/54. Class 38 (2). A permanent magnet is made by heating together metallic oxide powders comprising Fe 3 O 4  and Fe 2 O 3  in the weight ratio of between 2.5 and 3.3. to 1, and another oxide, preferably Co.O. Preferably the ratio of Fe 3 O 4  to Fe 2 O 3  is between 2.5 and 2.9 and the ratio of Cobalt oxide to total iron oxide is between 2.1 to 2.8. The magnetic properties of such a magnet are particularly stable and reproducible. The mixture may be heated to between 950‹ and 1050‹ C. in an inert gas such as nitrogen.
Patent GB-918663-A (GB)
Title: Improvements in and relating to laminated electromagnetic cores
Inventor: PARK KENNETH JOHN
IPC: H01F38/10
Filed: 1960-03-24
Abstract: 918,663. Inductors. GENERAL ELECTRIC CO. Ltd. Feb. 22, 1961 [March 24, 1960], No. 10486/60. Class 38 (2). A laminated electromagnetic core construction, e.g. for a choke or combined choke and transformer unit comprises a easing 1 (Figs. 1, 2) enclosing a choke coil carried on core limb 2 so that the flux path through the core is longitudinally through the core limb 2 then longitudinally through the casing 1 back to the core limb 2. The casing part 4 is formed from two packs of U-shaped strip laminations 5 which fit one within the other and are held together by tubular rivets 6, 7 which also serve as grommets for coil leads. A strengthening channel 8 is formed by indenting the part 4. Lamination packs 3 and part 4 are dipped in varnish, then packs 3 are sprung into the open sides of part 4 and are thus self-retaining. A V-shaped nick is formed where packs 3 meet so as to restrict the eddy current path through the core. Core limb 2 which may be in a number of sections projects through a rectangular hole 10 at one end of the part 4 to permit adjustment of the air gap(s). The laminations of the projecting portions of the core limb 2 may be formed integrally with the transformer laminations. Alternatively packs 5 may fit together differently or may be formed by bending a single pack of strip laminations in a closed loop (Fig. 3, not shown).
Patent GB-403961-A (GB)
Title: Treatment of iron pyrites for recovery of sulphur and formation of iron oxide
IPC: C01B17/06
Filed: 1932-06-30
Abstract: <PICT:0403961/III/1> Sulphur and magnetic iron oxide are recovered from pyrites &c. by treatment with so much air that only part of the sulphur is oxidised according to the equation 3 Fe S2 + 502 = Fe3 O4 + 3S + 3SO2 The reaction is exothermic and the oxidation chamber is so insulated and the rate of feeding the air and mineral so adjusted that temperature of the outgoing gases exceeds 1000 DEG  C. Reduction of the sulphur dioxide is effected in another zone of the oxidising chamber or in a second chamber by means of finely divided coal, coke or charcoal supplied in such quantity as to complete the reduction with the formation of carbon dioxide.  Introduction of the powdered mineral to the oxidising chamber is effected at the top by mechanical means or by injection with inert gases, e.g. the final gases of the process, the air being supplied at the base of the chamber.  The requisite temperature is maintained by preheating the air and supplying the mineral in very finely divided condition, preheating being effected by the final exit gases, by intimate contact with the hot oxide or by passage through channels in the walls of the chamber. Similarly the powdered reducing-agent is injected with an inert gas into the zone containing the hot oxidation products or into the top of a second chamber to the top or base of which the oxidation products are fed.  To avoid the formation of carbon bisulphide or oxysulphide, the amount of reducing agent should be such as to allow a small proportion, up to one per cent, of sulphur dioxide to be unreduced.  Prior to condensation, dust is removed by a settling chamber and, after cooling to say 400 DEG  C, by electric precipitation.  In the drawing, oxidation and reduction chambers A, H are included in a single, heavily insulated unit, powdered mineral being supplied by a hopper or jet feed B to the chamber A previously heated to red heat.  Air, preheated by passage through the cooler N and supplied by a fan F, enters at a point I and gives up its oxygen to the descending pyrites in the lower and middle parts of the chamber, the heated gases serving to drive off the labile sulphur atom from the pyrites in the upper part of the chamber.  Powdered fuel is supplied by a hopper or injector K to the reduction chamber H from the lower end of which the gases and vapours pass through a dust chamber M, a cooler N and electrostatic precipitator O to a condenser P.  Any small amount of residual sulphur is removed by a precipitator Q and the gases before discharge to the atmosphere pass through a scrubber R.  According to the Provisional Specification, the gases pass through a dust-removing chamber before reaching the reduction space in which producer gas or water gas may be used instead of powdered fuel.
Patent GB-788351-A (GB)
Title: Improvements in or relating to magnetic memory matrices
Inventor: HERBERT JOHN MARTIN
IPC: G11C11/06
Filed: 1954-06-24
Abstract: 788,351. Magnetic structures. PLESSEY CO., Ltd. June 23, 1955 [June 24, 1954], No. 18516/54. Drawings to Specification. Class 38 (2). [Also in Group XXXIX] The array of bi-stable cores in a magnetic memory matrix (see Group XXXIX) is constituted by a perforated sheet or strips of magnetic material having a substantially rectangular hysteresis loop, certain of the perforations being associated with the matrix conductors so that their margins form individual bi-stable magnetic circuits isolated from each other by the remaining perforations. The sheet or strips may be formed from manganese carbonate, magnesium carbonate and ferric oxide powders which are mixed with water and fired for two hours in an oxidizing temperature of 1100‹ C. The resulting mass is ground to powder and mixed with a lacquer containing diamyl tartarate, cellulose acetobutyrate and ethylene di-chloride. The liquid mixture is cast on to a flat surface and the flexible sheet remaining after evaporation of the volatile part of the organic medium is perforated mechanically. Alternatively the perforations may be moulded by incorporating a pattern of pins on the casting surface. Subsequently the magnetic material is sintered, if desired with a silk-screened palladium pattern of conductors to be printed, by firing in air at 1400‹ C. Reference has been directed by the Comptroller to Specification 760,307, [Group XXXIX].
Patent GB-296693-A (GB)
Title: Improvements in the method of working with hydrocarbons at high temperatures
IPC: B01J19/02
Filed: 1927-03-03
Abstract: 296,693. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). March 3, 1927. Divided on 296,683. Hydrocarbons.-The hot parts of apparatus in which hydrocarbons are treated at high temperatures are composed of or lined with aluminium to prevent deposition of carbon. If catalysts are used they should also be substances which do not encourage carbon deposition, e.g. silica, pumice, barium carbonate, charcoal treated with barium salts, boron, tungsten, &c. with or without a coating of lustrous carbon. The invention is applicable to distilling, extracting, dehvdrogenating and other processes involving heat treatment of hydrocarbons excepting cracking and hydrogenating, which are excluded.
Patent GB-707636-A (GB)
Title: Improvements in or relating to automatic mechanical locking devices for telescopic jacks
Inventor: CALDWELL HARRY BALSHAW
IPC: F15B15/26
Filed: 1949-07-14
Abstract: 707,636. Pneumatic single-stroke apparatus. ELECTRO-HYDRAULICS, Ltd. July 7, 1950 [July 14, 1949], No. 18617/49. Class 8 (2). [ Also in Group XXIX] In an automatic locking device for telescopic jacks comprising a latch 7, a locking ring 12 forming an abutment through or over which the latch 7 is capable of sliding, and a spring- biased lock bolt 14 adapted to hold the latch 7 fixed and thus prevent it from sliding back through the ring 12, the latch 7 is formed of a plurality of rigid segments 25 which rock over a fulcrum e.g., a ring 9 with rounded edges without contacting the cylinder wall so as to engage the bolt 14, which latter is movable with respect to the latch 7. The bolt 14 and latch 7 are positively locked by co-operating tapers 27, 28 engagement of which is indicated by movement of a plunger 19 displaced by a bolt actuated cam 18. The latch 7 together with a similar latch 8, are secured to a rod 5 on each side of the jack piston 6 and engage one or other of locking rings 12, 13 and bolts 14, 15 at the ends of the cylinder 1.
Patent GB-1302964-A (GB)
IPC: B29C65/00
Filed: 1970-04-20
Abstract: 1302964 Reinforced thermoplastics hose UNIROYAL Inc 20 April 1970 [22 April 1969] 18662/70 Heading F2P A reinforced thermoplastics hose 1 is made by:-helically winding a layer of parallel textile reinforcing elements 3 around a tube 2 at an angle to the tube longitudinal axis and fusing the reinforcing layer to the tube; helically winding another such reinforcing layer 5 around the first layer at the same angle to the tube longitudinal resin and of opposite hand to the first layer and fusing the second layer to the first layer; and encasing and bonding the tube and layers in a protective jacket 7. The tube 2 is passed through a bath of plasticizing agent at elevated temperature to soften the outer surface and is then passed through a wrapping machine which applies the first reinforcing layer 3, the plasticizing agent still acting on the tube and the layer 3 to promote fusing at the contact surfaces. The fused tube 2 and layer 3 are then passed through a water bath to remove the plasticizing agent, and then through an oven micro-wave unit, or infra-red unit to remove the water. The plasticizing-wrapping- washing-drying operation is repeated for the application of layers.The fused tube 2 and layers 3, 5 is passed through a plasticizing agent bath and then the agent is removed by the passage through a water bath before the application of the protective jacket 7 by an extruder, which forces the jacket material into nearly all the interstices between the elements of the reinforcing layers 3, 5. The resulting hose 1 is then cooled. The reinforcing elements consist of multifilament yarns comprising continuous or discontinuous synthetic filaments, or consist of solid single compact elements of cylindrical cross-section or a tape of spaced textile elements held together by a light weft. Thermoplastics material used are:-nylon 6, nylon 66, a copolymer of both, polyesters, vinyl plastics, acrylic plastics, vinylidene chloride polymers and copolymers, polyolefins; the hose 1 may be of any one or more of these materials. The plasticizing agent for nylon is :- resorcinol-water solution, resorcinolethanol solution, fluorinated ketones e.g. hexafluoroacetone as a gas or aqueous solution or in liquid hydrateform. For polyesters, the agent is:- hot meta-cresol in water, cold aqueous solution of orth-chlorophenol. For removing the plasticizing agent, besides a water bath, a cascade of washing medium into the assembly can be used, of:- water, ethanol, or aqueous ethanol.
Patent GB-1153253-A (GB)
Title: Improvements in or relating to V.H.F. Directional Aerial Systems
IPC: H01Q19/10
Filed: 1967-04-24
Abstract: 1,153,253. Aerials. SIEMENS A.G. 24 April, 1967 [25 April, 1966], No. 18707/67. Heading H4A. An aerial array comprises a number of pairs of parallel dipoles in front of a common reflector, each pair being attached to a carrier which is rotatable about a horizontal axis. At least two walls of the reflector are in the form of short-circuited quarter-wave lines, which extend to enclose the array, and which act as current traps to reduce back radiation. As described, each pair of dipoles is mounted on a forked carrier 25 which is fixed at its centre to the back wall 27 of a box reflector, stops being provided so that the dipoles may be either horizontal or vertical, according to the kind of polarization required in the radiation. The upper and lower walls 28, 29 of the reflector 9 are provided with inner walls 30, 31 which are open in front and closed at the back by the wall 27. Adjustment bars 21, 22 between the walls 28, 30 and 29, 31 are set at a distance of a quarter wavelength from the front of the reflector, which may be covered by a protective sheet 33 of dielectric material. A vertical metallic dividing wall 23 in the centre of the reflector 9 serves to de-couple dipole pairs on its right from those on its left. The dipoles are connected to a common feeder by coaxial lines, and the arms of the carriers 25 may act as outer conductors thereof, and be slotted at their ends to provide balanced slot-feeding arrangements for the said dipoles.
Patent GB-530667-A (GB)
Title: Improvements in hose bridge devices
IPC: A62C33/06
Filed: 1939-06-29
Abstract: 530,667. Hose-bridges for roads. COVENTRY CLIMAX ENGINES, Ltd. (Hale Fire Pump Co. Inc.). June 29, 1939, No. 18919. [Class 107] A hose-bridge, for preventing damage to a fire hose 4 by a vehicle wheel, has a flexible base 1 which extends beyond the ramps 2 and lies flat on the ground, this extension being clamped by the vehicle wheel 6 to the ground before the wheel reaches the ramps, whereby the bridge is immobilised. The ramps may consist of blocks 5 of wood or other material secured to the flexible base, which may be of webbing or rubberized fabric, or of metal. ,
Patent GB-613677-A (GB)
Title: Improvements connected with stair rod fixing brackets and the like
IPC: A47G27/06
Filed: 1946-06-26
Abstract: 613,677. Brackets ; stair-rod fastenings. HEAD, F. W. June 26, 1946. No. 19053. [Class 52 (v)] [Also in Group XVII] A fastener for stair rods or the like is made from a strip of resilient metal a with attachment lugs a<5> at one end and the other end is bent to inverted U-shape to form an end stop a<2> and an aperture d guiding member a<1> for the stair rod, the parts a<1>, a<2> being separated by an inclined run a<4>. The part a<1> is apertured at a<3> to receive the stair rod which is sprung into position between a pair of the brackets.