baber/WOPTO huggingface dataset:
Patent GB-1350172-A (GB)
Title: Blast furnace bases
IPC: C21B7/10
Filed: 1972-03-17
Abstract: 1350172 Blast furnace bases GUTEHOFFNUNGSHUTTE STERKRADE AG 17 March 1972 [18 March 1971 20 March 1971] 12563/72 Heading F4B A blast furnace base comprises in turn a layer of carbon bricks 3, layers of graphite blocks 8, 5 and 10, a steel plate 9 and the foundation 4, the blocks in layer 5 being formed with channels in which are laid cooling water pipes 7 bedded into a rammed ceramic or graphite mass which yields to relative movement between the pipes and the layer 5. The pipes may be arranged in two systems (Fig. 2) between concentric arcuate headers (11, 12) adjacent pipes 7, 7<SP>1</SP> being in different systems whereby the water in them flows in opposite directions. In a modification, Fig. 4, the steel plate 9 lies above the layers 5, 8 and is held by expansion bolts 22 fixed in the base by anchor plates 15 or plugs 16. The plate 9 is tightened on to a rammed composition 20 by nuts 18 which are covered by caps 19 welded to the plate.
Patent GB-1451595-A (GB)
Title: Refractory material and a method of manufacturing refractory  material
IPC: B22D41/02
Filed: 1975-03-26
Abstract: 1451595 Refractory coatings CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE 26 March 1975 [26 March 1974] 12604/75 Heading B2E [Also in Division Cl] A raw mixture contains by weight 75-95% SiO 2 , more than 3% Al 2 O 3 , and at least one chromium containing compound, the amount of the compound(s) being such that; on calcination of the raw material, the resulting refractory contains 1-10% Cr 2 O 3 . The silica may be in the form of silica sand, and the chromium compound may be Cr(OH) 3  and/or a soluble chromium salt and/or Cr 2 O 3 , preferably Cr 2 O 3  or industrial chromite (44% CT 2 O 3 ). The alumina may be hydrated or anhydrous and may be in the form of clay. Use as coating material. A ladle or other metallurgical vessel, optionally prime-coated, may be coated with the raw material by sling- ing, or with bricks of the raw material. Contact e.g. with molten steel, fires the raw material to form the refractory.
Patent GB-717680-A (GB)
Title: Improvements in and relating to the stabilisation of alkylated phenylene diamines
Inventor: TAYLOR ARTHUR WILLIAM CHARLES
Filed: 1951-05-30
Abstract: Alkylated phenylene diamines having reduced tendency to discolour are obtained by treating the diamine or crude diamine with an alkaline or basic substance of which preferably some, but not more than 1 per cent by weight, is left in the diamine as stabilizer.  Phenylene diamines which can be treated in this way are, for example, NN1-di(sec. butyl)-p-phenylene diamine, the corresponding m- and o-diallyl compounds, the N-mono-alkyl p-compounds; the N-mono-alkyl-m- and o-compounds, the p-trialkyl compounds, the m- and o-trialkyl compounds, and especially these compounds in which the alkyl groups contain from 1 to 5 carbon atoms.  Examples of such compounds, which are particularly valuable as antioxidants for petroleum products, are NN1-di(sec. butyl)-p - phenylene diamine; NN1 - di - isopropyl p - phenylene diamine, NN - dimethyl - N1-sec. butyl-p-phenylene diamine, and NN-dimethyl - N1 - isopropyl - p - phenylene diamine.  Other diamines which may be treated according to the invention are N-sec. butyl-p-phenylene diamine, NN1-di-isopropyl-2,3,5,6-tetramethyl-p-phenylene diamine, and NN1-di(sec. butyl)-n-phenylene diamine.  Suitable alkaline or basic substances are, for example, the alkali metal hydroxides such as caustic soda, the alkoxides especially those containing up to 6 carbon atoms, the trialkylamines, especially those containing up to 6 carbon atoms in the alkyl group, and the tetra alkyl ammonium hydroxides, especially those containing up to 5 carbon atoms in the alkyl group.  The treatment with the alkaline or basic substance may be carried out before or after distilling the crude mixture.  In the examples (a) NN1-di(sec. butyl)-p-phenylene diamine (obtained by reacting p-nitroaniline and methyl ethyl ketone in the presence of hydrogen at superatmospheric pressure) is heated with a solution of caustic soda in a mixture of methanol and water; the mixture is distilled to give the pure diamine with reduced tendency to discolour; (b) freshly distilled NN1-di-sec. butyl p-phenylene diamine which has been distilled in the absence of caustic soda is stored under nitrogen over 1 per cent of its weight of solid sodium methoxide; and (c) freshly distilled NN1-di-sec.-butyl p-phenylene diamine is mixed with about 1 per cent of its weight of a saturated solution of sodium methoxide in methanol and stored under nitrogen.
Patent GB-1404720-A (GB)
Title: Coupling transformers
IPC: H01F27/32
Filed: 1973-03-16
Abstract: 1404720 Transformer LANDIS & GYR AG 16 March 1973 [22 March 1972] 12726/73 Heading HIT [Also in Division H4] A transformer comprises primary coils 4 and 5, and secondary coils 6 and 7, all coils being axially movable relative to each other. The coils are dipped in synthetic resinous plastics and have moulded plastics parts 8, 9 and 15, 16 on screwed plastics bolts 10 and 17 respectively. Parts 8 and 9 are at 120 degrees to 15 and 16 so that the coils are coaxial and nuts 11-14 and 18-21 allow axial adjustment of each coil. The primary coils are in series and the secondary coils are in series or parallel. Three such transformers are used for 3-phase networks. The transformer is used in a ripple control system (see Division H4).
Patent GB-623680-A (GB)
Title: Improvements relating to the control of electrically driven cross feed mechanism of plano-grinders, plano-millers and planing machines
IPC: B23Q15/00
Filed: 1947-05-12
Abstract: 623,680. Control of motors. CHURCHILL MACHINE TOOL CO., Ltd., and JONES, J. C. May 12, 1947, No. 12748. [Class 38(iii)] An electric control system for the motor driving the cross-feed mechanism of machines, e.g. plano-grinders, planing machines or the like, has the period of operation of the motor determined by the build up of voltage across a condenser so that when a certain value is attained a discharge means operates to disconnect the motor and causes a brake to be applied thereto. A 3-phase reversible A.C. induction motor is supplied when switch d is closed by the machine table reaching the end of its travel, energizes relay f, thus closing contact i to charge a condenser j at a rate determined by a variable resistor k. At a certain p.d. a neon tube m flashes over, so energizing a relay o to close contact p, thus energizing relay q, comprising three contacts; contacts r, s are made to retain the relay q and to fully discharge the condenser and contact e is opened to disconnect the motor and cause a brake to be applied. To obtain increased accuracy at the point of feed reversal, e.g. when machining a recessed face, a part on the cross feed reversing mechanism closes switch t slightly before changing the position of switch c, thus short-circuiting the variable resistor k and reducing the amount of feed to a value determined by the resistor m only. After reversal, the switch t opens and restores the feed to the same amount as before.
Patent GB-1385160-A (GB)
Title: Mos semiconductor structure with increased field threshold and method for making the same
IPC: H01L29/78
Filed: 1973-03-16
Abstract: 1385160 MOSFET integrated circuits SIGNETICS CORP 16 March 1973 [24 April 1972] 12803/73 Heading H1K In a monolithic integrated circuit comprising at least one MOSFET the field region between devices is provided with an insulating coating which includes trapped ions near the semiconductor surface to increase the inversion voltage threshold. Such a structure is typically made on an N type silicon wafer by first treating one face with a solution containing chromic oxide and sulphuric acid at 160 C. for up to 15 minutes, to provide 50-60  thick oxide layer containing positive ions of chromium. After rinsing and drying a thick layer of oxide is grown on top of this, windows opened at device sites by photolithography, source and drain diffusions provided at these sites, oxide grown or deposited to form the gate insulation and metal source, drain, and gate electrodes applied.
Patent GB-232061-A (GB)
Title: Improvements relating to automatic wind screen cleaning devices
IPC: B60S1/10
Filed: 1924-05-24
Abstract: 232,061. Lucas, Ltd., J., and Egginton, W. H. May 24, 1924. Spring gears operating in both directions.-In fluid-pressure operated devices in which a wiper is oscillated by pistons movable in a pair of opposed cylinders, fluid pressure being supplied alternately to each cylinder by a central valve actuated by the pistons f connected by a bar which actuates the valve mechanism, the cylinders are constructed with double walls, the annular space d between the walls a, b forming the communication between the outer ends of the cylinders and the valve. Specification 26965/09 is referred to.
Patent GB-576838-A (GB)
Title: Drop-out half-tone negatives
IPC: G03F5/24
Filed: 1943-08-09
Abstract: 576,838. Photo-mechanical printing- processes. LIEBOWITZ, B. Aug. 9, 1943, No. 12828. Convention date, Aug. 25, 1942. Drawings to Specification. [Class 98 (ii)] A half-tone negative having opaque portions corresponding to the high-light sections of an original drawing. and half-tone portions corresponding to the tone sections of the drawing, is produced on light-sensitive photographic material by giving the tone sections of the drawing such a colour that at least the lightest portions of the tone sections have a tint to which the light-sensitive material is little sensitive and by thereafter photographing the drawing on to the light-sensitive material successively through a half-tone screen and without the screen. The drawing sheet may be coated with a colourless coating solution and the tone sections painted in with a colouring solution containing in addition to the paint therefor an additional chemical substance reacting with the colourless coating solution to give at least the lightest portions of the tone sections the required colour, preferably a yellowish, brownish, or reddish tint, to which the light-sensitive material is little sensitive. If the original drawing contains line sections, these are reproduced as transparent portions in the negative. In the second exposure, a glass plate having the same refractive index as the glass base of the half-tone screen is interposed between the drawing and the lightsensitive material. The first exposure through the half-tone screen is longer than usual and the second exposure is relatively brief. A contrasting developer is used. The half-tone sections may first be painted in with the colouring solution and the coating solution then applied to at least the tone sections of the drawing. In an example, paper is coated with a weak sodium thiosulphate solution, the tone sections are painted thereon with grey or black paint containing uranium nitrate (to give the lighter parts of the tone sections a yellowish tint), and the drawing is successively photographed through a half-tone screen and then without the screen, which is replaced by a transparent glass plate of the same thickness in the second exposure. The sensitive plate is developed in. highly contrasty developer. Half-tone screening may be ensured in the darker parts of the half-tone areas of the negative by making a third exposure with a white sheet interposed between the original drawing and the half-tone screen, this white sheet being photographed through the half- - tone screen on to the sensitive material. After preparing the half-tone sections of the original drawing, line sections may be made in a colour to which the light-sensitive material is insensitive, e.g. in black paint. If the third (" flashing ") exposure is given, half-tone screening is prevented in the line portions by the interposition of a mask having opaque portions corresponding to the line sections. Specification 525,300 is referred to.
Patent GB-1351701-A (GB)
Title: Apparatus for guiding a craft
IPC: G01S19/15
Filed: 1971-05-04
Abstract: 1351701 Radio navigation SPERRY RAND CORP 4 May 1971 [14 May 1970] 12885/71 Heading H4D [Also in Division G3] In apparatus for guiding a craft to a landing utilizing a radio glide-slope, an integrator 23 stores a signal representing a desired descent rate, a signal at B represents craft displacement from the centre line of the glide-slope, means 37 provides a signal representing actual altitude rate, the three signals are algebraically summed and the sum signal is selectively coupled to the integrator's input. The invention is applicable to automatic pilot or flight director modes. In the embodiment, prior to interception of the radio glide-slope switch S1 is in the "sync." position and switches S2, S3 in the "cruise" position; when a unit 27 senses that point M, Fig. 2, has been reached switches S2, S3 are changed over thereby coupling an amplifier 10 to actuator 28 and an amplifier 11 to the flight director indicator, and switch S1 is simultaneously actuated to "auto-pilot" or "flight director" according to prior pilot selection. Flight director mode.-The output of a unit 31 is arranged to be a function of barometric altitude rate at low frequencies and an inertial rate at high frequencies. As the aircraft proceeds from M towards the centre line of the glide-slope 34 the voltage at B drops thereby commanding a "fly-down" to meet that centre line; the altitude rate signal rises to produce a signal at point A which washes out that at point B. Thereafter the flight director indicator is controlled by the beam displacement signal and damping is provided by the washed-out altitude rate signal, yielding asymptotic capture of the centre line. The time constant of the integrator 23 feedback is made long (e.g. 40 seconds) by resistor 32b. Circuit 19 compensates for glide slope beam convergence, and at flare point N the output of multiplier 16 is zero and the output of a circuit 21 is reduced to 0À2 times thereby reducing the signal at point A and yielding a "fly-up" command. Thus for example a desired glide slope descent rate (G.S.D.R.) of 11 ft./sec. will produce a touchdown descent rate (T.D.R.) of 2À2 ft./sec., and if G.S.D.R. departs therefrom T.D.R. departs from 2À2 ft./sac. less drastically. Automatic pilot mode is similar excepting that on glide-slope capture S1 is switched to "autopilot" thereby applying the output of multiplier 16 to integrator 23. As the aircraft flies towards centre-line 34, the glide-slope displacement signal becomes less than the signal at point A thereby causing "fly-down" and an altitude rate signal appears at point C. The displacement signal subsequently reduces to zero with the signal at point C cancelled by that at point A. Flight path damping is achieved by arranging low gain in integrator 23. Monitoring.-If the flight director indicator is utilized as a monitor of the automatic pilot a signal is coupled into amplifier 11 via a switch S4.
Patent GB-1079027-A (GB)
Title: A signal sampling circuit
IPC: H04B14/04
Filed: 1965-03-26
Abstract: 1,079,027. Pulse modulation circuits; pulse sampling. STANDARD TELEPHONES & CABLES Ltd. March 26, 1965 [March 30, 1964], No. 12913/65. Addition to 1,079,026. Headings H3T and H4L. The signal sampling circuit of the parent Specification is modified in that the transistor earthing the input signal between sampling pulses is replaced by a Zener or other diode. As shown in Fig. 1 a current proportional to the input voltage V 1  appears at the collector of transistor TR 1  and between sampling pulses V 2  is earthed via Zener diode D 1 , the transistor TR 2  being non-conductive. Each sampling pulse V 2  causes TR 2  to conduct and charge the capacitor C 1 , diode D 1  being cut off. Immediately before each sampling pulse a clamping pulse V 3  discharges the capacitor C 1  via transistor TR 3 , the signal samples V 4  being supplied to a utilization circuit (not shown). Transistor TR 1  may be biased via resistor R 3  and current source E 3  to allow both positive and negative signals to be sampled. In a modification, Fig. 3 (not shown), a biased diode replaces the Zener diode.
Patent GB-611364-A (GB)
Title: Shaft couplings
IPC: F16D3/36
Filed: 1946-04-29
Abstract: .611,364. Universal joints. GEAR GRINDING MACHINE CO. April 29, 1946, No. 12918. Convention date, Dec. 11, 1944. [Class 80 (ii)] A universal joint comprises two like shaft engaging members A, B, each having pairs of circumferentially spaced axially extending portions a, b, a<1>, b<1> on diametrically opposite sides, which portions overlap and have between them a cross-shaped member D which together with the portions a, b, a<1>, b<1> are formed with races c, d for the reception of anti-friction means which permit limited relative movements between the members A, B, while torque is transmitted without lost motion. The joint ring may be encased in a two-part cover F, F<1> sealed, to allow relative motion, by a plate G held over an aperture F<2> by a spring H. In modifications, the members A, B are formed as discs for bolting to mating flanges on the shaft ends and the joint is enclosed by a rubber-like material sleeve which is clamped between the members A, B and the shaft flanges.
Patent GB-661380-A (GB)
Title: Improvements in or relating to plasticised polyvinyl resin compositions
IPC: C08K5/523
Filed: 1948-05-12
Abstract: Polymers and copolymers of vinyl chloride are plasticized by the addition of 20 to 60 per cent of a monoalkyl diaryl phosphate ester of the formula <FORM:0661380/IV (a)/1> in which R is an alkyl radical containing 6 to 12 carbon atoms, e.g. 2-methylpentyl, hexyl, 2-ethylhexyl, octyl, nonyl, decyl and lauryl, or an alkoxyethyl group wherein the alkyl substituent has 4 to 12 carbon atoms, e.g. butoxy, 2-methylpentoxy, hexoxy, octoxy, 2-ethylhexyloxy, nonyloxy, decyloxy and lauroxy, R1 is phenyl and R11 is o-, m- or p-cresyl.  The cresyl radical may be derived from commercial cresol containing the isomers and some xylenols.  Copolymers specified are those with vinyl acetate, methyl methacrylate, vinylidene chloride and di-ethyl maleate. The plasticizers may be incorporated on a two-roll differential speed mill at 100-170 DEG  C. with the addition of basic lead silicate as heat-stabilizer.ALSO:Monoalkyl diaryl phosphate esters of the general formula <FORM:0661380/IV (b)/1> in which R is an alkyl radical containing 6 to 12 carbon atoms, e.g. 2-methylpentyl, hexyl, 2-ethylhexyl, octyl, n-octyl, nonyl, n-decyl, lauryl, or an alkoxyethyl group wherein the alkyl substituent has 4 to 12 carbon atoms, e.g. butoxyethyl, 2-methylpentoxyethyl, hexoxyethyl, octoxyethyl, 2 - ethylhexyloxyethyl, nonyloxyethyl, decyloxyethyl and lauroxyethyl, R1 is phenyl, and R11 is o-, m- or p-cresyl, are prepared by the reaction of phosphoryl chloride with the cooled alcohol to form the alkyl phosphoryl dichloride, the hydrogen chloride formed being removed by reduction of pressure. The chloride is added at a temperature below 3 DEG  C. to a mixture of cresol and phenol in aqueous 50 per cent sodium hydroxide.  The crude ester is separated from the aqueous salt layer and washed with dilute aqueous sodium hydroxide.  "Commercial" cresol, which contains cresol isomers together with some xylenols, may be used.
Patent GB-592812-A (GB)
Title: Improvements in or relating to spindle units for high speed machinery
IPC: B24B41/04
Filed: 1945-05-24
Abstract: 592,812. Bearings; lubricating. STEVENS, A. H. (Reid Bros. Co., Inc.). May 24, 1945, No. 13025. [Classes 12 (i) and 12 (iii)] In a self-contained spindle unit containing an oil chamber 11, Fig. 1, the spindle 14 is eccentrically supported in a shell 10 by a shoe 28, Fig. 5, entering transversely through the shell and having an arcuate bearing surface 30 resiliently held in contact with the spindle which is in contact with the opposite wall of the bearing. The spindle 14 is rotatably supported in cylindrical sleeve bearings 15 within eccentric bores 12 and held against axial movement by thrust ball bearings 16. Shoes 28 are provided at the ends of the shell 10, each shoe being mounted for radial movement in a window in the sleeve 15, having guideways for lugs 32 on the shoe, and resiliently held by compression springs 36 whose ends are supported on studs 38 and 40. A slot is provided in the bottom of the shell to permit passage of the shoe, this slot being normally closed by a replaceable section 44 which carries the studs 40. The sleeve 15 is slotted at 48 to receive an oil ring 46 dipping into an oil reservoir 26 in communication with a main reservoir 11, and the thrust bearings 16 may be similarly lubricated by a ring 50.
Patent GB-360383-A (GB)
Title: Improvements in or relating to milling cutters
IPC: B23F21/12
Filed: 1930-04-28
Abstract: 360,383. Gear-cutting. AVIVI, A., CHITIS, U., RUGGIERO, A., NEIBURGERS, S., 5, Parco Lemme, and ADORNO, G., 10, Via Francesco di Mura, both in Naples, Italy. April 28, 1930, No. 13071. Convention date, April 27, 1929. Void [Published under Sect. 91 of the Acts]. [Class 83 (iii).] Tools.-Gears are cut by a tool which rotates and reciprocates in contact with the work, at the same time serving to rotate the work. A tool comprises a reciprocating cylinder formed with teeth 2 of the general cross section of gear teeth, but relieved along the length to form cutting edges 8a, 8b, which cut on the upward and downward stroke respectively, a tooth 7 being generated as the work and tool rotate together. Non- cutting parts 8 of alternate teeth engage the work to rotate it while the other teeth are in cutting engagement.
Patent GB-549751-A (GB)
Title: Improvements in fixing brackets for curtain rods or rails
IPC: A47H1/102
Filed: 1941-10-11
Abstract: 549,751. Bolting. CLAY, A., and WICKER, J. C. Oct. 11, 1941, No. 13120. [Class 89 (i)] [Also in Groups XIV and XXII] A fixing bracket for curtain rods or rails adapted for alternative wall or ceiling fixing is formed by bending the blank shown in Fig. 5 so that ears a', embrace a loose nut d, and ears a<1>, by bending along the broken lines, assume the positions shown in Fig. 3, permitting screws to be passed through the holes a<2> for attachment either to a vertical or a horizontal surface. A tubular socket c, which may be formed from synthetic resin reinforced with metal, supports the curtain rod and is provided with a threaded spigot to screw into the nut d.
Patent GB-132258-A (GB)
IPC: F24H1/10
Abstract: 132,258. Frister Akt.-Ges., R. Dec. 9, 1916, [Convention date]. Heating by electricity.-A flow heater has pairs of pipes a connected in parallel, the pairs being connected in series, and arranged so that water passes in the same direction in any pair, on either side of a heating-element c arranged between them. Water is admitted through a pipe q and a passage d to one pair of pipes, and passes thence through a junction d' to another pair, and through a valve to an outlet s. The valve l, controlled by an adjustable spring m, opens automatically at any desired pressure, to allow escape of steam, and engages with a cam k on a cupshaped member i, which is mounted to turn on the stem g of an inlet valve f, but allows free sliding movement of the stem. The valve l is fully open when the valve f is closed. As the handle is turned, the valve f opens and cold water is supplied. With further movement of the handle, a switch b closes the circuit, and the spring m closes the valve l and warm or hot water is supplied. The cam is set by a lever m engaging with a stop t adjustable by means of a screw o.