baber/WOPTO huggingface dataset:
Patent GB-1065030-A (GB)
Title: A method of reducing corrosion of metals due to flow of liquids thereover
IPC: F17D1/16
Filed: 1965-12-15
Abstract: Erosion corrosion of a liquid e.g. water impinging on a metal surface, e.g. of steel, Cu, Al or alloys thereof such as Cu-Ni, admiralty or Al brass, is reduced by adding hydrogen gas to the liquid, e.g. by injecting it through a gas distributing filter, the addition preferably corresponding to a partial pressure of at least 10-6 atmph, to permit the flow velocity of the liquid over the metal surface to be increased.  The surface may form part of a heat exhanger cooled by sea water or the cooling surface in an electrical apparatus.
Patent GB-1472432-A (GB)
Title: Shaped and fired refractory fibers
IPC: C04B35/622
Filed: 1974-04-11
Abstract: 1472432 Laminates MINNESOTA MINING & MFG CO 11 April 1974 [16 April 1973] 53314/76 Divided out of 1472431 Heading B5N [Also in Division C1] Solid, fired, transparent homogenous refractory fibres containing more than 50% anatase TiO 2  in the form of individual fibres, woven or non-woven fabrics are used to reinforce plastic, elastomeric, metallic or ceramic composites. The fibres may be plied or interwoven with fibres of metal, SiO 2 , carbon, graphite, fibreglass or polytetrafluoroethylene, the fibres may contain additional oxides. In Example 2, layers of parallel fibres were laid up with layers of epoxy novolak resin and subjected to heat and pressure.
Patent GB-1431466-A (GB)
Title: Skid control system for vehicle brakes
IPC: B60T8/72
Filed: 1973-11-16
Abstract: 1431466 Anti-skid braking systems KELSEY HAYES CO 16 Nov 1973 [14 Dec 1972] 53343/73 Heading F2F A skid control system for a vehicle having a pair of front wheels 14, 16, a pair of rear wheels 10, 12 and individual fluid brake systems for each pair of wheels, comprises first and second speed sensing means 38, 40 associated with individual ones of the pair of front wheels 14, 16 for providing respective speed signals representing the speeds of the individual front wheels, the speed sensing means being operatively coupled with skid control means comprising means responsive to an incipient wheel skid at one of the front wheels for modulating the fluid pressure in the brake system for the front wheels, and a high speed select circuit 94 operatively coupled to the first and second speed sensing means comprising means for developing a reference signal representing the speed of the faster wheel of the pair of front wheels. There is also skid control means for the rear pair of wheels 10, 12 comprising speed sensing means 36 associated with those wheels for providing a rear speed signal, a comparison circuit for comparing the rear speed signal with the reference signal, and means for modulating the fluid pressure in the brake system of the rear wheels when the difference between the rear speed signal and the reference signal exceeds a preselected level. As shown, the sensors 38, 40 are connected to a skid control module 92 and the high wheel select logic module circuit 94, the module 92 skid controlling the front wheels 14, 16 by detecting an incipient skid at either wheel to modulate the front brakes via a brake pressure modulator 26; the circuit 94 discriminates against the slower front wheel to provide an output signal representing the speed of the faster front wheel which signal is supplied to an averaging and scaling circuit 98. The latter supplies a signal to a subtractor 102 and which represents the front wheel speed to which the rear wheels are slaved. The sensor 36 is connected to a signal conditioner 104, e.g. a digital-to-analogue converter, which provides a signal to the subtracter 102; a signal is supplied by the subtractor to the brake pressure modulator 24 so that the rear wheel brakes are modulated when the speed of the rear wheels drops below the speed of the front wheels by a preselected slip.
Patent GB-1129660-A (GB)
Title: Data processors
Inventor: KETTLEY ARTHUR WILLIAM
IPC: G06F9/308
Filed: 1965-12-16
Abstract: 1,129,660. Digital computer. WESTERN ELECTRIC CO. 16 Dec., 1965 [30 Dec., 1964], No. 63381/65. Heading G4A. A stored programme digital computer incorporates a signal operation circuit for modifying information signals, the circuit including in tandem a plurality of modification circuits each for performing a different type of modification and having a plurality of selectable operating modes, means being provided for supplying control signals to select the operating modes so that at least two different types of modification are performed on signals passing through the circuit. The computer comprises a memory 17 holding data and programmes, a programme address register 25 normally incremented by one at each operation to address a sequential programme, a plurality of auxiliary registers 21-24, a memory access register 28, an instruction decoder 32 and the signal operation circuit. Data from the registers 21-25 or the memory may be fed in parallel on line 27 to circuit 38 where it may be operated on by a shift or rotate circuit 39 under control of the decoder 32, or a wired mask which serves to pass information bit groups of various sizes, or a logic circuit 41 performing the operations subtract, OR, AND, EXCLUSIVE OR. Only one of the logic operations can be performed at a time, the one in question being chosen by the decoder. An additional piece of circuitry connected to the auxiliary registers can be used to provide argument signals to the logic circuit 41. The additional circuitry comprises a one-bit rotate circuit 43 which also complements, a complement circuit 47 to correct the output of 43 and a selector gate 46. The output of the rotate circuit may be applied directly to gate 46 if required. An example of the operation of the circuits generates a parity bit. For this the contents of the X register are passed to circuit 38 where, for an eight bit word, they are shifted right four bits and also through argument bus 42 to the logic circuit where the first four bits will be EXCLUSIVE ORed with the last four, the result being stored in the Y register. This is repeated for a two bit shift of the Y register to EXCLUSIVE OR the first two bits with the last and stored in the Y register again. Another operation with a one bit shift produces the parity bit. This is then shifted left to bit place 9, masked to pass only the 1 bit and stored in the bit position to the left of the word in X register. The programme address is normally passed through circuit 38 where it is incremented by a wired in complement of two argument from the one bit rotate circuit 43 and returned to register 25. However if a sub-routine or transfer is required the address in the address field of the instruction word is entered into register 25 and the previous programme address word is stored in one of the auxiliary registers. The second address is incremented as required and when the sub-routine is finished the original address is called directly from its register and sent to the memory access circuits and to the programme address register.
Patent GB-1365717-A (GB)
Title: Process for making permanent magnets from magnetic powders
IPC: H01F1/08
Filed: 1971-11-18
Abstract: 1365717 Drawing; extruding B B C BROWN BOVERI & CO Ltd 18 Nov 1971 [21 Dee 1970 (2)] 53587/71 Heading B3P [Also in Division B5] A method of making a permanent magnet from a preform of compacted powder composed of magnetically aligned particles of one or more intermetallic compounds of a 3d transition metal and a rare earth metal comprises forcing the preform 1 through a die 4 under a pressure exerted by a pressure liquid 5, the die 4 having an outlet which is smaller than the inlet. The preform 1 may be extruded into a counter-acting fluid 6 held under about half the pressure of the liquid 5. The die 4 may have a conical inlet portion and the liquids 5, 6, e.g. oil may be held under pressure by plungers 11, 13. A pressure equalizing valve 10 is provided in the chamber 9 housing the liquid 5. The latter may be under a pressure of 12-20 k. bar. The preform 1 may be made by drawing a ductile container (14) filled with powder through a steel block (15, Fig. 2) provided with a conical inlet and surrounded by a magnetic coil producing a field parallel to the direction of drawing. The preform 1 and the container (14) may be forced through the die 4. The container (14) may be formed of 0À1 mm. thick low carbon stainless steel. The powder may be produced by grinding the intermetallic compound in a micromizer in a shielding gas atmosphere. The transition metal may be iron, nickel or cobalt and the rare earth metal may be yttrium, lanthanum, cerium, praseodymium, neodymium or samarium. The compound SmCO 5  is mentioned specifically.
Patent GB-1201146-A (GB)
Title: Turntable installations
Inventor: TATTERSALL EDWARD GUNSTON
IPC: B60S13/02
Filed: 1966-12-01
Abstract: 1,201,146. Vehicle turntables. HOVERMARINE Ltd. 29 Feb., 1968 [1 Dec., 1966], No. 53780/66. Heading B7J. [Also in Division A6] A vehicle turntable installation, for use with ferries, comprises a turntable 1 mounted within a well 3 defined in a floor 4, the turntable being raised and lowered on air cushions formed by supplying air to four neoprene-proofed nylon skirts 15 from motor-driven fans 8 through pipes 10. The turntable is rot atable about a central spindle and may be braked by a pad, mounted on an hydraulic ram, which engages the periphery of the turntable. The turntable may be either manually or mechanically rotated and prevented from rotation by a pin passing through a hole therein into a corresponding hole in the floor of the well. A pair of hydraulic rams may be used to raise the turntable if the air supply fails. A stop 6 locates the vehicles 5 on the turntable. In use on a ferry the turntable is lowered during a voyage to prevent movement of the vehicles on the ferry deck and also to lower the centre of gravity of the ferry. An air bag 52 may further be used to prevent movement of the vehicles 5 by enveloping them. Air is supplied from a fan 53 and elastic strings 56 raise the bag during deflation.
Patent GB-1158429-A (GB)
Title: Improvements in and relating to the manufacture of Glass
IPC: C03C3/112
Filed: 1966-12-02
Abstract: 1,158,429. Glass composition. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 2 Dec., 1966 [3 Dec., 1965], No. 53995/66. Heading C1M. [Also in Division G1] A glass composition in molar per cent consists essentially of silica 40 to 60, oxide of a selected monovalent metal, lithium, sodium or potassium 20 to 45, caesium oxide 0.5 to 3À0, barium oxide 3.0 to 7À0, lanthanum oxide 1.0 to 3À0, zirconium oxide 1.0 to 6.0, niobium oxide or vanadium oxide 1.0 to 3.0 modified in that part of the oxide of the selected monovalent metal is replaced by the corresponding fluoride, and/or part at least of the barium oxide is replaced by barium fluoride and/or part at least of the lanthanumoxide is replaced by lanthanum fluoride. In one example the molar percentages are: SiO 2  : 40 to 60; Cs 2 O : 0.5 to 3À0; ZrO 2  : 1 to 6; Nb 2 O 5  or V 2 O 5  : 1 to 3; LiF, NaF or KF : x; BaF : y; LaF 3  : z; Li 2 O, Na 2 O, or K 2 O : 45- x/2; BaO : 7-y; La 2 O 3 ; 3-z/2, wherein x, y and z satisfy the relation x + 2y + 3z = 2 to 20. One or two of x, y and z may be zero. The glass may be used in an electrode for a pH meter which has a low electrical resistivity and an adequately high electrical potential per unit of pH value. In preparing the glass the oxide reagents which may be in the form of their carbonates or nitrates are blended and melted at 1100‹ C. for 2 hours, heated at 1200‹ C. for 1 hour and cooled rapidly to form a glass block which is crushed and melted at 1000‹ C. A tube of lead silicate glass may be used as a holder for the glass electrode which has approximately the same coefficient of thermal expansion as the glass electrode. A small amount of molten glass is picked up by the glass holder and blown into a small bulb about 3.0 mm. outside and 2.8 mm. inside diameter.
Patent GB-1376176-A (GB)
Title: Digital to analogue conversion arrangment
IPC: H02P23/22
Filed: 1971-11-22
Abstract: 1376176 Analogue to digital converters SIEMENS AG 22 Nov 1971 [23 Nov 1970] 54207/71  Heading G4H Samples of the digital output of a counter Z are supplied at the frequency fg by switch Sch and store ZS to a D/A converter DAW, rather than allowing the converter to respond to every change of the counter output. When using a D/A converter of the type having a number of parallel connected weighted resistors switched in according to the counter output, where the electronic switches have a turn-on and turn-off delay thereby introducing errors, the invention reduces the overall error by reducing the amount of switching in the converter. The arrangement is used for the retro-active control of speed of an electric motor, where the difference between the desired speed represented by frequency f1 and the actual speed f2 derived by a tachogenerator is given by the output of the difference counter Z.
Patent GB-1355126-A (GB)
Title: Filter frame construction
IPC: B01D46/52
Filed: 1971-11-13
Abstract: 1355126 Filter assembly AMERICAN AIR FILTER CO Inc 22 Nov 1971 [7 Dec 1970] 54227/71 Heading BIT A filter element comprising a flat section of pleated filter medium 4 bonded to a pheripheral frame 3 by sealant 8 is attached to metal frame 12 of channel section, frame 3 abutting the inner leg 14 and base 13 of frame 12 and being clamped in place by resilient channel sections 18 which fit into the sides of frame 12 and are retained therein by inturned parts 19 of outer leg 16 of frame 12. Frame 3 may be fibreboard, as metal frame 12 and sections 18 impart sufficient rigidity to the assembly. Frame 12 is extended by inner flange 17 which helps support the filter medium. The pleats of the medium are spaced by corrugated spacers (7). Frame 12 is made by cutting out and bending a single strip of suitable section (Figs. 5, 6, 7, not shown).
Patent GB-1402292-A (GB)
Title: Hose end fitting
IPC: F16L33/207
Filed: 1972-06-27
Abstract: 1402292 Pipe couplings BTR INDUSTRIES Ltd 22 May 1973 [27 June 1972] 54515/74 Divided out of 1402291 Heading F2G On crimping or swaging ferrule 11, knurling 16 bites into its surface and prevents it from being rotated relatively to the insert 10.
Patent GB-1442385-A (GB)
Title: Gas pressure turbines
IPC: F01C1/00
Filed: 1973-11-26
Abstract: 1442385 Turbines HOLLYMATIC CORP 26 Nov 1973 [23 April 1973] 54765/73 Heading FIT A gas driven turbine comprises a hollow rotor 18  having at least two convergent-divergent tangential nozzles 29 for discharge of gas supplied to the rotor interior from an inlet duct 35 in a stator casing end-wall 15, and two interior spiral wall surfaces, 31, 31a for directing the air to the nozzles. As shown, the gas exits from the casing through three arcuate slots 40 in the end-wall 15, but the gas exits may be arranged in the radially outer peripheral wall of the casing, radially in line with the nozzles, or offset axially forwardly and/or rearwardly. To avoid fluid drag, the rotor outer surface and the casing inner surface are smooth and spaced by a distance dependent on the nozzle throat diameter. Other relative dimensions are given for nozzle length to throat and inlet area to throat.
Patent GB-1426636-A (GB)
Title: Inflatable intrauterine device
IPC: A61F6/14
Filed: 1973-11-28
Abstract: 1426636 Intrauterine device and inserter TECNA CORP 28 Nov 1973 [6 March 1973] 55249/73 Heading A5R An inflatable intrauterine device comprises a pair of superposed, approximately triangular sheets (6), (7) Fig. 2 (not shown), of elastomeric material which is impervious to usual inflating liquids but permeable to other selected liquids, a non-stretchable mat 8, Fig. 1, of pliant, woven fibres either firmly attached to or included within said sheets, which sheets are secured together, by heat-sealing or adhesive, around their edges in a planar band 9 leaving a gap 11, and areas 12-14 generally bisecting the triangle apices and being secured together except at said gap and at a region 16 at the triangle centre to leave unsecured zones 17-19 communicating with each other and with said gap. A liquid is introduced into said zones through a tube 31 and fills the zones and separates the sheets into a preformed configuration. Silicon rubber may be used for the sheets, being impermeable to the inflating liquid but permeable to contraceptive materials which may be contained in the device, which device may have an inner or outer coating of e.g. polyurethane having a closely controlled porosity. Tube 31 has a loosely tied knot 33 and an end-fitting 34. Applicators. An applicator in the form of a probe 26, Fig. 4, having a bulbous portion 28 on which the device is placed for insertion, held in position by a removable cap 29, which dissolves in the uterus, is provided, the endfitting 34 of the tube clipping into a socket (36) Fig. 5, (not shown), on a handle (27) of the probe. Liquid is injected into the tube by a syringe (38), Fig. 7, (not shown). The device may be provided with a fine cord 52.
Patent GB-1457445-A (GB)
Title: Electric arc melting furnace
IPC: C21C5/52
Filed: 1973-11-30
Abstract: 1457445 Melting and refining metal USS ENGS & CONSULTANTS Inc 30 Nov 1973 [30 Nov 1972]  55707/73 Heading C7D In a process for melting and refining scrap metal, e.g. stainless steel, the scrap 22 is charged into an electric arc furnace to live R-R, the electrodes 20 are lowered to melt the scrap and the molten metal falls into bath 24. Before melting with the electrodes, molten metal may be poured in through the mouth 14 of the furnace to partially melt the scrap as it falls into the bath 24. The bath of molten metal is refined by a number of concentric tuyeres 32, the inner pipe supplying an O 2 -bearing gas, and the outer a protective fluid, e.g. propane, methane or fuel oil. The inner pipe may additionally supply fluxing agents, e.g. CaO, CaCO 3 , liquefying agents, e.g. CaF 2 , deoxidizing agents, e.g. Fe-Mn, Fe-Si, and alloying ingredients, whilst the outer pipe may alternatively supply a neutral gas, e.g. Ar, to lower the partial pressure of CO in the bath. At least one of the tuyeres may be arranged tangentially to create a vortex in the bath. An additional tuyere above the bath line converts CO above the bath to CO 2 .
Patent GB-1457432-A (GB)
Title: Preparation of halogenomethane-phosphonic acid dihalides
IPC: C07F9/42
Filed: 1973-12-04
Abstract: 1457432 Preparing halomethane phosphonic acid dihalides HOECHST AG 4 Dec 1973 [5 Dec 1972] 56088/73 Heading C2P A halomethylphosphonic dihalide wherein X is a halogen atom, e.g. Cl or Br, is obtained by reacting hydroxymethyl phosphonic acid: HO.CH 2 P(O)(OH) 2  or a salt, a functional derivative or a thioanalog thereof, preferably at 65 to 200 C., with an acid halide (CO) n X 2  wherein n is 1 or 2 in the presence of a catalyst which is either (1) a compound having at least one trivalent or pentavalent N or P atom bonded via one double bond and at least one single bond to at least two organic radicals, or bonded via at least three single bonds to at least 3 organic radicals each of the said organic radicals having not more than 20 carbon atoms, or (2) a fully amidated monobasic, dibasic or tribasic organic or inorganic acid of trivalent or pentavalent phosphorus in which any organic radical bonded to the P atom has not more than 20 carbon atoms and all substituents on amido nitrogen atoms are aliphatic radicals each having not more than 20 carbon atoms, there being at least one such substituent present. Specified acid halides are COCl 2 , COBr 2 , Oxalyl chloride and oxalyl bromide. The functional derivative of the hydroxymethyl phosphonic acid may be diesters, monoesters and their salts, pyrophosphonic acid esters and thioanalogues of such compounds, the free acid, its salts e.g. alkali metal or ammonium salts, the di(C 1 -C 6  alkyl)- esters being preferred. The reaction is optionally carried out in an inert solvent including toluene, diphenylmethane and various specified chlorohydrocarbons or preferably the final reaction product itself. Specified types of catalyst are tertiary amines, tertiary phosphines (including cyclic phosphines), azomethines, quaternary ammonium and phosphonium salts, heterocyclic amines of aromatic character, acid amides, pyridine N-oxide, acyclic and cyclic tertiary phosphine oxides, amides of phosphinic and phosphonic acids and of their thio analogues and triamides of phosphoric and thiophosphoric acids. In examples ClCH 2 P(O)Cl 2  is obtained by reacting or its diethyl ester with COCl 2  in the presence of pyridine.
Patent GB-1122609-A (GB)
Title: Production of a mixture of stereoisomers of 4,4'-methylenedi(cyclohexylamine)
IPC: B01J23/46
Filed: 1966-12-19
Abstract: The invention relates to a process for the preparation of a mixture of approximately equilibrium concentration of the stereo-isomers of 4,41-methylenedi (cyclohexylamine) which comprises contacting either (a) p,p1-methylenedianiline or (b) a mixture of other than equilibrium concentration of the stereoisomers of 4,41-methylenedi (cyclohexylamine), with hydrogen at a pressure of from 500 to 15,000 pounds per square inch and a temperature from about 150 DEG  to 300 DEG  C., in the presence of from 0 to 500 per cent ammonia and from 0 to 100 parts of an inert liquid organic solvent (both reckoned on the weight of (a) or (b) starting material) in the presence also of from 0.001 to 10% of ruthenium catalyst (reckoned on the same basis and calculated as ruthenium) comprising either (1) ruthenium supported on calcium carbonate, a rare earth oxide or a mixture of two or more of these or (2) ruthenium supported on alumina, barium sulphate or kieselguhr, and alkali-moderated with from 0.1 to 15% of a basic alkali metal compound.