baber/WOPTO huggingface dataset:
Patent GB-1021817-A (GB)
Title: P.b.x. group hunting for automatic telecommunication
IPC: H04Q3/62
Filed: 1963-10-18
Abstract: 1,021,817. Automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. Oct. 18, 1963 [Oct. 22, 1962], No. 41240/63. Heading H4K. An electronic system acting on the selfseeking principle as described in Specification 953,895 provides for PBX hunting by the use of a control circuit for each group which is taken into use when the line called by the directory number is busy to effect the selection of an idle line from the other lines of the group. Line circuit, Fig. 2. This is somewhat similar to that described in Specification 1,021,816. In the normal condition, transistor 206 is switched on, while transistors 207, 208 are switched off. When a call is initiated, the change of potential on wire 230 switches on 207 which in turn switches on 208. The potential at P3 is clamped to that on wire 43 which is removed when an idle link is allotted. It then becomes that of the collector of 207 and a firing pulse controlled by capacitor 218b is passed to point X to effect switching. The switches are held by way of resistors 217, 216, 224 and 208 is switched off. If no switching path is established, 208 remains on and a further attempt is made during the next allotting interval. Assuming that a path is established, dialling switches 207 off and on to change the potential at P3. When the line is called, a ground marking on T, U switches 206 off, and in consequence 208 is maintained off but 207 is switched on. The potential at P3 is now such that a firing pulse controlled by capacitor 218a is applied at X to effect switching. 206 switches on again when the marking is removed and switches off 207, but this is switched on by the reply of the called subscriber, and its off condition gives a release signal when the subscriber goes onhook. If the line is busy, the switching off of 206 produces no change sufficient to generate a firing pulse since 207 is already on. Group controller, Fig. 3, for sequential hunting. Terminals A of the line circuits other than the first are connected to transistors such as T39. When the first line L31 is called and is found to be busy transistor T5 operates and a ring counter steps under the control of an oscillator T31, T32. In consequence, transistors such as T39 which are normally operative are switched off in turn to control transistors 206 of the corresponding line circuits, the action continuing until an idle line is found. Group controller, Fig. 4, for random hunting.- Terminals B of the line circuits are connected over individual resistors to transistor T42 and terminals A to transistor T41. When a particular line is called a negative-going pulse fires T42, and, after a delay produced by a capacitor 428, T41 switches off, whereupon if the called line circuit has not already done so, the remaining line circuits race to fire through the switching network. Other embodiments are described, Figs. 5, 6, 7 (not shown), in one of which the hunting is partly sequential and partly random.
Patent GB-1013077-A (GB)
Title: Device for feeding additional materials into a stream of molten metals
IPC: C21C7/00
Filed: 1964-10-12
Abstract: <PICT:1013077/C6-C7/1> Alloying substances having a lower boiling point than the melt are introduced into molten metal as it passes from a storage chamber through a cylindrical shoot 4 which projects coaxially through an outlet channel 3 decreasing in cross-section to its orifice 8 without a cylindrical part.  The graphite shoot 4 is adjustably supported by a clamp 12, and has an inwardly bevelled edge 9. Nodular cast iron is prepared by adding Fe-Si-Mg of a grain size of less than 5 mm. to an iron melt.  Part of the Fe-Si-Mg may be replaced by pure magnesium, or pure magnesium may be added to the melt.
Patent GB-974656-A (GB)
Title: Improvements in and relating to vibration isolators
IPC: F16D3/60
Filed: 1960-12-02
Abstract: 974,656. Resilient mountings; universal joints. KERLEY ENGINEERING Inc. Dec. 2, 1960 [Dec. 8, 1959; Jan. 7, 1960; Jan. 21, 1960 (3)], No. 41531/60. Headings F2S and F2U. A cable type resilient support e.g. for isolating engines, electronic assemblies; gyroscopes &c. from vibrations and shocks comprises a multistrand continuous cable which is return bent to pass through between mounting bars 30 and a curved spacer 32 each bar 30 being formed by co-operating lower and upper strips 36, 38, Figs. 3, 10, having mating cable receiving grooves 42 which clamp the passes of the cable 34 when the strips 36, 38 are secured together by the clinching around the upper strip 36 of clips 40 formed integral with the sides of the lower strip 38 between the grooves 42. The spacer 32 comprises a curved outer strip 46, Fig. 7, which has a pair of end clips 50 and is grooved on its inner face and which co-operates with an inner curved strip 48, Fig. 9, having spaced integral side clips 54 for clinching the strips together. A double type of shock absorber, Fig. 11, has a centre bar 54 for connection to an isolated object and two outer bars 56, 57 adapted to be connected to a support structure. In an arrangement for withstanding extremely heavy shock loads, Fig. 13, the composite strips 69 of each mounting bar, having complementary grooves, are secured together by rivets 72 the corresponding looped ends of the cable being supported by a saddle bar 74 provided with spaced saddle members 75 with grooves 76 which fit under the adjacent loops of the cable and have cable clearing flats 77. A plurality of right-angle mounts 82, each comprising two cable-type supports 84 mounted on an angle plate 85, Fig. 18, are employed to isolate e.g. a delicate piece of electronic equipment 80 from a structure 83. Flexible protrusions 91, as shown in Fig. 19, and the outer ends of the bores of which may be flared, surround the cable where it emerges from the mounting bars 90. A flexible metal sleeve, Fig. 24, may surround the cable at each pass through a mounting bar the sleeve head 97 being engaged beneath the corresponding pair of clinching clips. Alternatively sleeves as shown in Fig. 25 may be employed. Short separate members such as 99, 101, Fig. 28, can be connected between a pair of mounting bars. In a torque coupling device 104, Fig. 32, a plate 114 on a driving shaft 110 is connected to a plate 115 on a driven shaft 111 by means of a number of right angle mounts of the type shown in Fig. 18 and each comprising two cable-type supports 105, 120 mounted on an angle plate 117, and a floating intermediate coupling member 121.
Patent GB-880895-A (GB)
Title: Process for the hydrolysis of condensation products of phenols with aldehydes or ketones
Filed: 1959-12-08
Abstract: An alkali-soluble condensation product of a phenol and a ketone or an aldehyde, particularly a 4,41-dihydroxy-polyphenyl-alkane, is hydrolysed into the compounds from which it is formed by heating the condensation product in the presence of basic materials and water at 150 DEG C. to 350 DEG C. under a pressure of 5 to 150 atmospheres. Suitable basic materials are the alkali metal and alkaline-earth metal hydroxides and carbonates, ammonia and basic ammonium salts. In Example 1 a homogenous solution of 2,2-(4,41-dihydroxydiphenyl)-propane (100 g.), sodium hydroxide (35 g.) and water (440 g.) is heated for 3 hours, with stirring, at 240 DEG C. in an autoclave.  The initial pressure is 20 atm. and rises to 70 atm.  The solution is then distilled in a column, and acetone is distilled off.  The residue is acidified with phosphoric acid, and the phenol is driven-over with steam.  In Example 4, an aqueous alkaline solution of 2,21-(4,41dihydroxydiphenyl)-pentane is heated for 4 hours at 240 DEG C. under pressure to give methylpropylketone and phenol.  In Example 5, cyclohexanone and phenol are obtained from 1,1-(4,41-dihydroxy-diphenyl)-cyclohexane.  In this case, the ketone is separated from the alkaline solution by extracting with benzene. In Example 6, acetophenone and phenol are obtained from 4,41-dihydroxy-triphenyl ethane.  In Example 7, 2,4-dimethyl-phenol is obtained from 3, 31, 5, 51 - tetramethyl - 2, 21 - dihydroxy - diphenyl - methane. Specification 829,207 is referred to.
Patent GB-1185507-A (GB)
Title: Improvements in or relating to Methods of and Device for Manufacturing Alkaline Chlorates, Notably Sodium Chlorate, by an Electrolytic Process.
IPC: C25B1/26
Filed: 1967-09-13
Abstract: 1,185,507. Electro-chemical production of alkali metal chlorates. KREBS & CIE. Sept.13, 1967 [Sept.14, 1966], No.41827/67. Heading C7B. In a method of electrolytically producing alkali metal chlorates from aqueous solutions of the corresponding chloride which comprises electrolytically decomposing the aqueous alkali metal chloride solution in an electrolytic cell, and circulating the resultant solution from the cell through a first zone in which the products of electrolysis combine chemically to form hypochlorite and hypochlorous acid, a second zone in which the hypochlorite and hypochlorous acid undergo chemical transformation into the chlorate, and thence back to the cell, the electrolyte flow-rate through the electrolytic cell is 0À3 - 0À6 m/sec., the residence time of the electrolyte outside the electrolysis zone is 1 - 4 mins. and the flow-rate and residence time are such that the proportion of active chlorine in the electrolyte at the outlet of the electrolysis zone is less than 4À5 g/l In the form shown a circuit is used comprising an electrolytic cell 1, conduit 5, hydrogen separator 6 and conduit 7, the first zone being formed by the conduit 5 and upper part of the separator 6, and the second zone 8 being formed by the lower part of the separator 6 and the beginning of the return conduit 7. The electrolyte passes through a heat transfer device 10 before recirculation to the cell 1. The electrolyte may be replenished via inlet 11, and the replenishment may be acidified with hydrochloric acid. The electrolytic cell is in the form of a conduit having a plurality of slot-shaped channels formed between a plurality vertical plateshaped electrodes, alternate electrodes being anodic and cathodic. Anodes used may be of graphite, activated titanium or other activated metal. The circulation of the electrolyte may be effected by the lifting force of the hydrogen released during electrolysis.
Patent GB-923848-A (GB)
Title: New composition for the treatment of tuberculosis
IPC: A61K31/455
Filed: 1961-11-23
Abstract: Isoniaziod (isonicotinic and hydrazide) is obtained by the condensation of isonicotinic acid ethyl ester and hydrazine. Ethioniamide (a -ethyl isonicotinic acid thioamide) is obtained by the action of hydrogen sulphide on a -ethyl isonicotinic acid nitrile in the presence of a base such as triethanolamine.  An admixture of these two pyridine compounds is used in treating tuberculosis (see Group VI).ALSO:A composition for the treatment of tuberculosis comprises, as the active ingredients, isoniazid and a -ethylisonicotinic acid thioamide (ethioniamide).  The composition is advantageously administered orally in the form of tablets which may be covered with a gastro-resistant coating of cellulose acetate phthalate.
Patent GB-1280876-A (GB)
Title: Improvements in and relating to semiconductor devices
Inventor: BEALE JULIAN ROBERT ANTHONY
IPC: H01L27/00
Filed: 1968-08-30
Abstract: 1280876 Semi-conductor devices MULLARD Ltd 22 Aug 1969 [30 Aug 1968] 42024/69 Heading H1K A region of a semi-conductor device is -produced by diffusing an impurity through the major part of the thickness of an epitaxial layer from a highly doped buried layer and diffusing a peripheral wall from the surface to meet the first diffused region, the substrate and epitaxial layer being of the same conductivity type. As shown, Fig. 7, phosphorus is diffused into selected areas of a P<SP>-</SP>-type Si substrate 31 to form N<SP>++</SP>-type regions and a P<SP>-</SP>-type epitaxial layer'34 is deposited, the phosphorus diffusing- out to 'form N-type regions 36 containing N<SP>+</SP>- type regions 35 at the sites of the original N<SP>++</SP>- type regions. Annular N<SP>+</SP>-type walls 37 are 'formed by diffusion to complete the isolation thus leaving enclosed portions (38) of the P<SP>-</SP> type epitaxial layer into which P-type base regions and N<SP>+</SP>-type emitter regions are 'diffused, the buried regions 36 forming the collectors of the transistors. In a modification, Fig. 8 (not shown), the annular N<SP>+</SP>-type walls are extended to contact the heavily doped part (35) of the initially formed buried layer and P-type grids (47, 48) are provided surrounding the N-type islands at the epitaxial layer-substrate interface and at the surface of the epitaxial layer to interrupt parasitic channels. The collector junction may be profiled by increasing 'the impurity concentration in that part of the N<SP>++</SP>-type buried layer which is to directly underlie the emitter region or by using an impurity of higher diffusivity in this region.
Patent GB-1347372-A (GB)
Title: Apparatus for setting up a stored digital value
IPC: H02M3/157
Filed: 1971-04-19
Abstract: 1347372 Altering individual digits of stored numbers TRYGON ELECTRONICS 19 April 1971 [27 March 1970] 42071/73 Divided out of 1347371 Heading G4H Individual digits of a number keyed into a store can be replaced without clearing the whole number. The store 106 comprises six sections 106a-106f. The number to be inserted in the store is keyed serially into decimal keyboard 25. Each decimal value is converted to binary by decoder 25 and applied to all sections of store 106. Shift register 110 is coupled to stores 106a-106f so that only that store which corresponds to an actuated shift register stage can take up the applied binary signal. Stage S1 is initially actuated and each actuation of a switch on keyboard 25 shifts the register one stage so the keyed in digits enter stores 106f to 106a in succession. To change an individual digit, the shift register stage corresponding to that digit is actuated and the digit keyed in. Clear button 32 actuates stage S1 of the register and renders the other stages in a non-actuated state. Digital display tubes 16 may be used to indicate the stored value. As described, the keyboard and store are part of a precision power supply which forms the subject of Specification 1,347,371.
Patent GB-960436-A (GB)
Title: Improvements in couplings for pipes, rods, ropes and electric cables
Inventor: MALTER FELIX
IPC: F16G11/04
Filed: 1960-12-07
Abstract: 960,436. Pipe joints; springs. OSKAR BIEGEL G.m.b.H. Sept. 12, 1961 [Dec. 7, 1960], No. 42127/60. Addition to 714,028. Headings F2G and F2S. [Also in Divisions D1 and H2] A coupling for attachment to a rigid or flexible tube, a rod or an elastic cord, comprises an externally screw-threaded tubular body 12, Figs. 1a, 1b having an internal diameter which is larger than the external diameter of the tube, a nut 13 adapted to screw on to the body and having a conical, internal surface 14 and an annular coiled spring 15 which fits over the tube and is compressed against the tube by the conical surface of the nut when the latter is screwed on to the body. As shown in Fig. 1a, a rigid pipe 10 is fitted into a flexible hose 11 and, in Fig. 1b the fitting 12 has an integral, rigid spigot 16, and a flexible sleeve 17 is disposed over a rigid pipe 10; the sleeve may extend over both pipes, when the latter are of rigid construction. In a modification, (a) a rubber seal 25, Fig. 10, is fitted between the tube 11 and the body 12, and the nut contains the spring 15, which is disposed between metal washers 26, 27, the washer being internally coned; alternatively, the washer 27 is dispensed with and the conical surface provided on the nut and (b) two annular coiled springs 15, Fig. 16, in series are employed.
Patent GB-1449262-A (GB)
Title: Sel-limiting conductive extrudates and methods for their manufacture
IPC: C08L7/00
Filed: 1973-09-07
Abstract: 1449262 Conductive compositions RAYCHEM CORP 7 Sept 1973 [8 Sept 1972] 42140/73 Heading C3P [Also in Division H1] A non-linear PTC resistive device which may be used for heat tracing pipes in chemical plants to prevent freezing or to maintain flow of viscous materials, for heat sensing, or for circuit breaking, comprises two parallel wires (e.g. of tinned copper) between which is extruded a mix of carbon black and a thermoplastic material exhibiting at least 20% crystallinity, the carbon constituting up to 15 wt. per cent of the composition. The extrudate is annealed at above 120‹ C. and at above the melting point (or range) of the thermoplastic material for a time sufficient to bring the room temperature resistivity of the material to a value low enough to satisfy 2L+5 log 10  R#45, where L is the carbon content in wt. per cent and R the room temperature resistivity. Preferably a jacket of material form-stable at the annealing temperature is extended about the first extrudate before the annealing step, directly or by tube extension. A further sheath (e.g. of polyethylene) may be provided after annealing and some cross linking of the thermoplastic material effected by irradiation. The thermoplastic material may be one or more of polyethylene; polypropylene; polybutene-1; poly-(dodecamethylene pyromillitimide); copolymers of ethylene and propylene and terpolymers with non-conjugated dienes; polyvinylidene fluoride; copolymers of vinylidene fluoride and tetrafluoroethylene; and copolymers of ethylene and vinylacetate or ethylacrylate; and may have wax and antioxidant additives. Typically, a master batch of carbon in a minor component such as copoly-(ethylene/vinylacetate or ethylacrylate) has mixed therewith a major component such as polyethylene, the two components being non-compatible. The jacket material of the examples is a polyurethane but other materials described in Specification 1,449,261 are suitable.
Patent GB-1287898-A (GB)
IPC: D06N3/14
Filed: 1969-08-25
Abstract: 1287898 Polyurethane coating MINNESOTA MINING & MFG CO 25 Aug 1969 [26 Aug 1968] 42290/69 Heading B2E [Also in Divisions C3 and D2] Substrates such as split leather, woven and non- woven fabrics may be coated with an aqueous latex having a viscosity of at least 30 poise and which comprises (1) substantially non- settling film-forming elastomeric polyurethane latex particles which when cast and fused to form a film have a tensile strength of at least 300 p.s.i., an elongation at break of at least 300% and a modulus at 100% elongation of 50 to 1000 p.s.i. and (2) organic filler particles which are substantially non-settling and in the size range of 10 to 150 microns. The filler particles normally comprise 10 to 60% by weight of the total solids content of the latex which total preferably provides 10 to 70% by weight of the latex. The polyurethane may be formed by emulsifying a conventional prepolymer in water at the same time as chain extension of the prepolymers with water or a polyamine. Suitable organic fillers are leather dust particles or pigmented elastomeric spheroids, e.g. coloured polyurethane or polyvinyl chloride. Thickening agents such as finely divided silica, polyacrylic acid thickeners, methylcellulose, carboxymethyl cellulose and polyvinyl pyrilidone may be incorporated in the latex. Microporous films and coatings may be produced by dispersing a water-immiscible, high boiling organic non-solvent in the latex such that on drying the water is evaporated first and then the non-solvent to provide a microporous structure, or by other known techniques. After drying, the coating may be buffed and an aqueous leather finish applied thereto. In Examples the following substrates are coated with the aqueous latex defined above, a chrome tanned leather split that had been swab-coated with a thin layer of a polyurethane, cotton cloth, a needle punched polypropylene web which had been sized and filled with a polyurethane latex and a synthetic leather substrate.
Patent GB-1375610-A (GB)
Inventor: WILLIAMS JR R B
IPC: G01G23/01
Filed: 1972-09-13
Abstract: 1375610 Digital weighing; voltage measuring RELIANCE ELECTRIC CO 13 Sept 1972 [30 Sept 1971] 42465/72 Heading G1N and G1U In an electronic weighing or voltage measuring system in which the analogue weight signal from a transducer is amplified, converted to a digital signal and displayed, the analogue signal is periodically interrupted while the output of the amplifier, with zero input, is set to zero and, during the interruption the display is maintained at its reading before the interruption. As described, the D.C. analogue voltage is generated by bridge connected load cell 11. The D.C. analogue voltage produced is amplified in amplifier 12 and passed to gap fill circuit 14 which comprises a capacitor which stores the analogue voltage at the start of a zero setting period. The zero setting is controlled by "auto zero controller" 15, which, 120 times every second breaks the connection between amplifier 12 and gap fill circuit 14, disconnects the power supply to load cell 11 so that the input to amplifier 12 is zero and actuates auto zero circuit 13 which biases the input of amplifier 12 for zero output. The signal from the gap fill circuit is passed through low pass-filter 16 which has a cutoff lower than the zero setting frequency and is passed to dual ramp analogue to digital converter 17. The digital output is transferred to storage register 23 and may be displayed at 24 or fed to a printer or computer. An analogue over-range detector 26 which produces a warning when the analogue voltage exceeds a predetermined level is also provided. A motion detector 27 comprising a differentiator produces an output (sync pulse) when the analogue reading is steady and may be used to initiate transfer of the value in storage register 23 to the printer. A tare value may be preset in counter 21, in which case the clock pulses are counted down from the tare value to zero and then up to the net weight. The range and resolution of the device can be changed by incorporating divides or multipliers between the clock 20 and counter 21. The circuitry may also be used as a digital voltmeter or, with a suitable sensor, for measuring pressure.
Patent GB-986635-A (GB)
Title: Clay treatment
Inventor: HAWKINS PAUL HENRY
IPC: C04B33/22
Filed: 1960-12-09
Abstract: Stable foamed aqueous slurries of clay are calcined to yield a clay not requiring grinding and yet suitable for use as a filler or pigment. The foamed slurry is fed into the calcining furnace as a spray or as a layer on refractory slabs.  The solids/liquid ratio may be increased by adjusting the pH value of the slurry by known methods or by adding a deflocculating agent.  The deflocculating agents e.g. sodium carbonate, silicate, hexametaphosphate or pyrophosphate, may be incorporated into the slurry prior to the addition of the foaming agent e.g. sodium alkyl naphthaelene sulphonates and saponin.  The foam may be produced by whisking or by gas generation in situ e.g. acid-carbonate or alkali-aluminium reactions occurring in the slurry or it may be generated in the spraying head of the furnace. The example refers to a foamed slurry being calcined at 1100 DEG  C. in an oxidizing atmosphere, the resulting mass being in a friable cellular state.
Patent GB-1385757-A (GB)
Title: Treating calcium sulphate
IPC: C01F11/46
Filed: 1972-09-13
Abstract: 1385757 Treating calcium sulphate GIULINI GmbH Gebr 13 Sept 1972 [15 Sept 1971] 42570/72 Heading C1A α-Calcium sulphate hemihydrate is obtained from a suspension of the same by continuously filtering the suspension through a pressure filter at a pressure of 0À5 to 2 atm. gauge and a temperature above the hemihydrate-dihydrate transition point and washing the filtered material with water at a temperature above 50‹ C. and a pressure greater than atmospheric. The wash water temperature is suitably from 85‹ to 105‹ C. and used in an amount 0À1 to 51. per kg. The washed hemihydrate may be mixed with water, ground and the pH is then adjusted to 4À5 to 4À8 by the addition of sulphuric acid.