baber/WOPTO huggingface dataset:
Patent GB-1256736-A (GB)
IPC: H03F3/18
Filed: 1969-03-12
Abstract: 1,256,736. Transistor circuits. INTERNATIONAL BUSINESS MACHINES CORP. 12 March, 1969 [15 March, 1968], No. 12907/69. Heading H3T. [Also in Division G3] The collector of each transistor 10, 12, Fig. 2, of a complementary pair is connected to the base of the other transistor and is also connected to a respective diode 15, 17, to form a three terminal network 22, 23, 25 (or 21, 24, 25, Fig. 3, not shown). The diodes may be the functions of further transistors (Figs. 1b, 1c, not shown) and each transistor 10, 12 may be replaced by a complementary pair (Fig. 1a, not shown) in which the collector of one is joined to the emitter of the other, and the base of the one to the collector of the other. Circuits employing this three terminal network are: (a) An impedance converter (Fig. 4, not shown) in which a voltage is applied (at 25) and the impedance between a terminal (22) and ground is negative and proportional to the impedance Z R  between another terminal (23) and ground; (b) A voltage regulator (Fig. 5, not shown) in which a voltage is applied (at 25), a reference voltage (at 23), a start-up diode (33) is connected in the reverse direction across diode (15) and a diode (37) is connected between the output terminals (22) and 23 for overvoltage protection, the voltage across a load R1 connected at 22 being regulated. In an alternative regulator (Fig. 8, not shown) two complete networks as in Fig. 2 are connected in cascade. If I 0  rises due to a fall in load impedance R1, then the positive feedback of the circuit further increases I 0  to keep V 0  unchanged; (c) A current generator (Fig. 6, not shown) in which the current through the common terminal (25) is regulated by a reference voltage applied (at 23) through an impedance R5, the terminal (22) being grounded; (d) A differential amplifier (Fig. 7, not shown) in which a voltage is applied through impedance Rb to one terminal (25) while the voltages to be compared are applied to another terminal (at 22) and through an impedance Z r  (at 23), the output Vb appearing (at 25).
Patent GB-1256945-A (GB)
IPC: B21B25/06
Filed: 1969-06-18
Abstract: 1,256,945. Rolling tubes. BLAW-KNOX CO. 18 June, 1969 [12 July, 1968], No. 12261/71. Divided out of 1,256,944. Heading B3M. A mandrel which is used in a continuous tube rolling mill includes a head 14 which is secured to a mandrel bar 15 by a quick release coupling. Heads of different diameters can thus readily be interchanged. The coupling incorporates a female member 101 secured to the bar 15, and a male member 102 secured to the head 14. The two members have co-operating external and internal lugs 110 and 107 so that the member 102 can be slid inside the other member and retained by a bayonet action. Clearance between the members is taken up by a spacer 109 having tapered wedge surfaces adjacent the end of the member 102. The angular position of the spacer is adjustable to accommodate different degrees of clearance. A conduit 62 supplies cooling fluid to the interior of the head 14, and is provided with a sleeve coupling 120, 121 which is automatically closed when the head 14 is secured to the bar 15. When the head and bar have been coupled together, a key 115 is used to hold the parts rotationally fixed.
Patent GB-1257010-A (GB)
IPC: C04B41/48
Filed: 1970-05-29
Abstract: 1,257,010. Impregnating carbon bodies. SIGRI ELEKTROGRAPHIT G.m.b.H. 29 May, 1970 [31 May, 1969], No. 26074/70. Heading DIP. [Also in Division Cl] A porous carbon body is successively impregnated, for proofing against liquids and gases, with a first PTFE wax melting at 300- 330‹C, and a second PTFE wax melting at 220-290‹C. The first and second waxes may have respective melt viscosities of 1000- 100000 cPs and not more than 1000 cPs. The body may be a graphite cylinder, impregnated with each wax by the vacuum technique followed by exposure to nitrogen at 20 Atm. The bodies are useful in heat-exchangers or' as sliding and bearing rings.
Patent GB-1264685-A (GB)
IPC: H01L35/32
Filed: 1969-08-08
Abstract: 1,264,685. Thermoelectric devices. MESSERSCHMITT - BOLKOW BLOHM G.m.b.H. 8 Aug., 1969 [10 Aug., 1968], No. 39880/69. Heading H1K. A thermoelectric device comprises two stages of thermoelements in thermal cascade, the thermoelements of the stages being of different materials and the higher temperature stage comprising only two elements, each being electrically connected to an individual element of the lower temperature stage. As shown, Fig. 1, a heat source 1 forms a bridge between two thermoelements 3, 4, of Ge-Si alloy forming a first stage, the upper ends of which are thermally and electrically connected to plates 9, 10 by flexible elastic members 8 comprising silver threads twisted to form multi-strand cords. The second stage comprises four elements 12, 12<SP>1</SP>, 13, 13<SP>1</SP> of Bi-Te, the outer two, 12, 12<SP>1</SP>, being connected directly to plates 9, 10 and the inner two 13, 13<SP>1</SP> being connected by a bridge 19 and electrically insulated from the plates 9, 10 by an insulating layer 20. The upper ends of elements 12<SP>1</SP> and 13<SP>1</SP> are connected by a bridge and the external leads 30 are connected'to the upper ends of elements 12 and 13. The arrangement is such that all the elements are connected electrically in series. In a second embodiment, Fig. 2 (not shown), three second stage elements are mounted on each of the first stage elements and the flexible members 8 are omitted. The heat source may be energized by radioactive isotopes and be constructed as a sphere around which the thermoelements are arranged.
Patent GB-1289073-A (GB)
IPC: H03K3/282
Filed: 1971-04-19
Abstract: 1289073 Multivibrator circuits MATSUSHITA ELECTRONICS CORP 19 April 1971 [27 March 1970] 25006/71 Heading H3T An astable multivibrator circuit comprises two switching transistors 1, 2 with capacitor coupled emitters, a biasing arrangement 7, 8 having at least one series connected diode 11, there being connected a resistor 13 across diode 11. The base bias versus supply voltage characteristics (Fig. 4, not shown) indicates that as the supply voltage falls, the curve follows a certain straight line determined by the resistors 7, 8 and the forward conduction voltage of diode 11 until the voltage drop across 11 becomes lower than the conduction voltage when the base voltage relationship is determined in a linear manner by the resistors 7, 8, 13. The provision of diodes 11 in the base bias circuit ensures improved temperature and voltage characteristics due to the constant voltage drop across 11.
Patent GB-1290234-A (GB)
IPC: C10B55/00
Filed: 1970-05-26
Abstract: 1290234 Delayed coking process LUMMUS CO 26 May 1970 [26 May 1969] 25313/70 Heading C5E Graphitizable needle coke is made by separating at 13, 18 from a feed derived from coal tar pitch 10, a fraction 21 at least 80% by weight of the components of which boil in the range 600 to 1200 F., e.g. 600 to 1000 F., and delay coking the fraction at 25. In the embodiment of Fig. 1, a fraction 14 boiling up to 1000 F. leaves a vacuum flash tower 13 and is delivered to a combination fractionator 18 from which a light oil 33 and heavy bottoms 21 (B.R. 600 to 1000 F.) are obtained. A part 32, 33 of one or both of 21, 33 may be mixed with the bottoms 31 from the tower 13 for delay coking at 37 for electrode coke. Some of the bottoms 21 is recycled at 53, 54, as are overheads 19, 20 from the drums 25, 37, and fresh pitch may by-pass 13, 18 at 10a for coking at 25. In a modification, Fig. 2 (not shown), the pitch (100) is supplied directly to the fractionator (101), the bottoms from which is flashed at (105) before being delivered to the drums (115). The coal tar pitch may be derived by either high or low temperature carbonization.
Patent GB-1290970-A (GB)
IPC: B29C67/00
Filed: 1970-12-29
Abstract: 1290970 Corrugating thermoplastic sheets SQLVAY & CIE 29 Dec 1970 [31 Dec 1969] 61583/70 Heading B5A [Also in Division D1] A device for corrugating hot thermoplastic sheets, e.g. of P.V.C., comprises continuous metal wires 8 supported by shells 6 on driven endless chains 3, and disposed in the direction of travel of a sheet 9 through the device so as to deform the sheet into corrugations having a polygonal cross-section, Fig. 2, when it is passed between them. The shells 6 are backed by fixed or movable supports 5 in the deforming section of the device but in the remaining section 10, the bands leave the shells and travel through a wider radius of curvature past guides 11, so that they are not bent beyond their elastic limit. The bands can be warmed by heaters 12, and cooled by cold air jets disposed in the deforming section of the device.
Patent GB-1295607-A (GB)
IPC: H01J19/02
Filed: 1971-05-17
Abstract: 1295607 Thermionic-cathode tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 17 May 1971 [20 May 1970] 15279/71 Heading H1D Apparatus for producing noise signals in high frequency circuits comprises a vacuum diode having a filamentary cathode 5 of an anode 4, and a coaxial line in which the anode is part of the inner conductor 32 and the cathode is coupled for high frequencies to the outer conductor 33. The cathode of thoriated W is supported within the concentric stainless steel anode 4 at one end by means of a fixed connecting pin 2 and at the other end by means of a slidable contact portion 8 connected by tension spring 9 to connection pin 17. The ends of anode 4 are connected to coaxial insulating cylinders 3 and 6 respectively and the outer ends of the insulating cylinders are connected to conducting cylinders 1 and 7 respectively. Slidable contact portion 8 is provided with holes 15 for the purpose of evacuation and an Al coating to make electrical contact with cylinder 7 and to prevent sticking under vacuum. The anode has an outer screw thread 19 which engages a corresponding thread provided in an aperture in stainless steel inner coaxial conductor 32. One end of cathode 5 is conductively connected via cylinder 7 to electrode 38 which is secured by insulating bolts 39 to outer conductor 33 and separated from conductor 33 by an insulating foil 40 to provide a capacitative coupling between the cathode and the outer conductor. The other end of cathode 5 is similarly capacitatively coupled to the outer conductor by means of resilient contact sleeve 41 of phosphor bronze and electrode 42. A voltage of 70-150 volts is connected to inner conductor 32 and a supply of 1-2 volts at 20 mA and 20 kHz is connected to the cathode between pins 2 and 17. Circular grooves 46 and 47 are provided in the outer and inner conductors respectively at both sides of diode 30 for impedance matching. Pin 13 is provided for a getter (not shown) and the pins 2, 10, 13 and 17 may be made of Mo.
Patent GB-1296768-A (GB)
IPC: H04B11/00
Filed: 1970-11-13
Abstract: 1296768 Acoustic signalling FRIED KRUPP GmbH 13 Nov 1970 [14 Nov 1969] 54186/70 Heading G4F [Also in Division H4] A submersible device 8 for relaying measurement data (e.g. echo-sounding, trawl net disposition or net fullness data) from submerged probes 4 (e.g. on a trawl net) to a water craft 6 comprises transducers and a streamlined sinker, the device being suspended from the craft by a rope 9. The device hangs almost vertically below the craft at a depth such that the transmission of the data by means of modulated sound waves between probes 4 and device 8 is unaffected by craft noises and thermal stratification of the water. Data is transmitted from device 8 to craft 6 by cable or by an acoustic link. Device 8 may be torpedo-shaped, or spherical with one or more fins for stabilizing its orientation. The transducers may be enclosed by the sinker or by a separate housing. A vertical shaft in the crafts hull, or a jib, is provided to aid winching the device up or down. Device 8 may include echosounding gear for determining the range and/or direction of net 1 and fish 3.
Patent GB-1297151-A (GB)
IPC: C22C37/08
Filed: 1969-09-10
Abstract: 1297151 Austenitic cast iron INTERNATIONAL NICKEL Ltd 27 Aug 1970 [10 Sept 1969] 44695/69 Heading C7A An austenitic cast iron comprises in weight %:- C 2À5-4 Mn 2À5-4À5 Ni 4-9À5 Cu 0-3 Mg up to 0À15 if necessary Mo 0-0À5 N 0-0À15 Si up to 2À5, the Mn content being 3-4À5 if flake graphite is required and 2À5-4 with added Mg if the graphite is to be spheroidal, the balance, apart from impurities, such as:- Cr up to 0À5, but preferably Cr free P up to 0À05 and S up to 0À05, being Fe. The alloy may be homogenized at at least 900‹C., quenched in air or oil and possibly tempered at 200‹C. followed by air cooling. The alloys may be used for wear rings in chemical decomposers, diesel engine cylinder livers, grinding mill liners and discharge grates or grizzly screens and scrapers used in one treatment. Also for sewage works parts cable lifters, derrick block sheaves, pumps, valves and support brackets.
Patent GB-1301561-A (GB)
IPC: C03B11/06
Filed: 1970-01-16
Abstract: 1301561 Press-forming glass articles OWENSILLINOIS Inc 16 Jan 1970 [16 Jan 1969] 2156/70 Heading C1M An apparatus for simultaneously pressforming a pair of grass articles comprises a mould consisting of at least three separable sections including fixed first section 16 having mould cavities in opposing vertical faces 17 mounted on a rotatable mould table 10 and a pair of horizontally separable second sections 19 pivotally mounted on the table on opposite sides of the section 16, each second section having a mould cavity complemental to and facing the adjacent cavity of the first section 16. Each cavity has an upper foot shaping portion 19a, a stem portion 19b and a lower bowl receiving portion 19c. The sections 19 are each pivoted to a link 27, both links being in turn pivoted to a yoke 29. The yoke 29 is connected to slide bars 30, 31 which are in turn attached to a cam roll 42 engageable with a cam 13, this functioning to open and close the mould sections. Specification 1,301,562 is referred to.
Patent GB-1307255-A (GB)
Title: Substituted basic benzhydryl ethers
IPC: C07D207/06
Filed: 1970-09-12
Abstract: 1307255 Substituted basic benzhydryl ethers PFIZER Ltd 9 Sept 1971 [12 Sept 1970] 43702/70 Heading C2C Novel compounds of formula wherein R is alkyl of 4 or 5 carbon atoms, R<SP>1</SP> is H or C 1-4  alkyl, n is 0 to 3 and Z is a divalent group which, with the carbon atom to which it is attached, completes a saturated heterocyclic ring containing at least one nitrogen atom, optionally substituted by C 1-4  alkyl or benzyl, and at least four carbon atoms, any such nitrogen atom being separated from the oxygen atom to which the C n H 2n  group is attached by a chain of from two to four carbon atoms and pharmaceutically acceptable acid addition salts thereof, are prepared by reaction of an alcohol of formula or a halide thereof with the halide or the alcohol HO-C n H 2n CHZ respectively optionally with conversion into a salt. Pharmaceutical compositions in conventional forms for oral or parenteral administration and having antihystamine "H2" blocking activity comprise an above novel compound or salt and a carrier therefor.
Patent GB-1307699-A (GB)
Title: Handrail standards and the like and methods of making same
IPC: E04F11/18
Filed: 1970-11-04
Abstract: 1307699 Making handrail standards G E B JONES 15 Oct 1971 [4 Nov 1970] 52362/70 Heading B3A [Also in Division E1] A method of making a handrail standard comprises severing a workpiece from bar stock, bending the workpiece to form a ring-shaped head 2 and securing the head by fusion with the stem 1 of the standard. The stem may be solid or tubular and the standard supports a rod or tube either parallel to or inclined to the surface on which it stands. The bar stock from which the head 2 is formed has a part-circular face 4 and it is subjected to a series of cold pressing operations in shaping the head. The ends of the shaped stock are welded together and the head is secured to the stem 1 by welds 9. The step of welding the ends of the stock may be omitted. The thickness of the head at the axis 10 may be ¢ inch and so the standard retains its strength after considerable corrosion has occurred.
Patent GB-1307976-A (GB)
Title: Aircraft fuel tank arrangements
IPC: B64D37/00
Filed: 1969-02-14
Abstract: 1307976 Aircraft fuel tanks BRITISH AIRCRAFT CORP Ltd 6 May 1970 [14 Feb 1969] 8300/69 Heading B7W An aircraft 10 has fuel tanks 11, 12 disposed in an undersection of the fuselage each having a bottom wall (20, Fig. 2 (not shown), forming part of, or being closely adjacent to the outer surface of the fuselage of the aircraft and having front and rear transverse walls mounted adjacent empty zones 21-24 in the fuselage, which zones are connected by at least one drain duct 25 to atmosphere. There may be one, or as shown two separate tanks extending across the whole width of the fuselage, wherein the bottom and side walls form parts of, or lie closely adjacent to the outer surface of the fuselage.. The drain duct may vent to atmosphere aft of the rearmost empty zone, thereby reducing the risk of fire resulting from puncturing of the tank.
Patent GB-1309734-A (GB)
Title: Adjustable support assemblies
IPC: A47F5/08
Filed: 1969-06-07
Abstract: 1309734 Brackets C TAYLOR 8 June 1970 [7 June 1969] 28940/69 Heading A4B [Also in Division E2] An adjustable bracket comprises a runner bar 2, two spaced clip members 63 formed from spring metal and engaged in a recess in the runner bar so as to resist sliding movement along the bar, two wire members 66 each engaged in an aperture 65 in the clip members end portions 69 of the wire members being directed towards one another and being inserted in opposite ends of a tube 71. Each wire member has a trough 68 so that the pair of wire members form a book support.
Patent GB-1311699-A (GB)
Title: Tie-bars
IPC: F16B37/04
Filed: 1970-10-27
Abstract: 1311699 Furniture joints J M D DE NIET 27 Oct 1971 [27 Oct 1970] 50965/70 Heading A4H [Also in Division F2j In tie-bars which may be used for shelving, a nut 2 is retained in the end of a tube 1 by indents 4 and prevented from rotating by an inward projection 3 engaging a recess. In assembly, an aluminium or aluminium alloy nut is rammed into a steel tube, through a tool including a steel roller to form an axial slot in the periphery of the nut. The projection 3 is punched out to engage the slot and further tools subsequently form the indents 4.
Patent GB-1313799-A (GB)
Title: Cleansing device
IPC: C23G3/00
Filed: 1970-04-28
Abstract: 1313799 Cleaning oily articles U ESER 28 April 1970 20435/70 Heading A4T [Also in Division C7] Articles 10 to be cleaned are placed in a tank 6 having a pipe 8 depending into a lower tank 1 so that, when air under pressure is admitted to the lower tank by way of a three-way valve 14, the cleaning fluid is forced into the upper tank. The amount of fluid forced into the upper tank depends upon the length of the pipe 8 and the amount of fluid in the upper tank may be fixed at a desired level by shutting of the supply of air to the lower tank by means of the valve 14 To drain the upper tank the valve 14 is adjusted to exhaust the lower tank to the atmosphere. The articles 10 may be supported on a perforated base and a throttling valve 13 is provided.
Patent GB-1316164-A (GB)
Title: Electric cables
IPC: H01B13/00
Filed: 1970-12-14
Abstract: 1316164 Electric cables BRITISH INSULATED CALLENDERS CABLES Ltd 14 Dec 1971 [14 Dec 1970] 59248/70 Heading H1A An anti-microphonic cable has its core or cores covered with an insulating layer of fluorocarbon polymer or copolymer e.g. P.T.F.E., the layer etched with a solution of e.g. metallic sodium dissolved in naphthalene and tetrahydrofuran or in ammonia and the etched surface covered with a non-metallic conductive coating, e.g. graphite dispersed in alcohol. An outer conductor, e.g. a metal tape or a metallized plastics tape may be wound helically or applied longitudinally, or the conductor may comprise a metal braid in which case an outer plastics sheath of P.V.C., nylon, or a fluorocarbon polymer or copolymer may be applied. The heat emitted during the extrusion may assist in effecting bonding of the graphite coating to the etched insulation. In one method of making the cable, Figs. 1 and 2 (not shown), the insulated cone is passed through an etching bath (3) and then through a bath containing acetone or other solvent (4). The conductor is wound on a reel (5) for several hours to dry before being drawn through a bath (6) containing graphite dispersed in alcohol. The conductor is hung to dry (7), and is then passed through a braiding machine (8) and finally wound on a further reel (9). Alternatively, a one-stage method may be employed, Fig. 3 (not shown), the conductor passing through all three baths in turn before being dried (at 16) and wound on a reel (17). It is stated that since the graphite coating is applied on a separate step the invention allows the insulated conductor to be spark-tested to detect voids, etc.
Patent GB-1329079-A (GB)
Title: Method of refining tellurium containing lead
IPC: C22B13/06
Filed: 1971-08-17
Abstract: 1329079 Refining lead AMERICAN SMELTING & REFINING CO 17 Aug 1971 38640/71 Heading C7D Tellurium is removed from lead by adding sodium, potassium or mixtures thereof to a molten pool of the lead, and agitating the pool to incorporate the tellurium into a slag layer which forms on the surface of the pool. The lead should have been softened, or not require softening, prior to the removal of tellurium, which may be followed by a desilvering process. The alkali metal may be added in solid or molten form and may be added as a master alloy. The pool is mechanically stirred, but the agitation should be discontinued before an undesirable amount of the removed tellurium is reincorporated into the molten lead. This reincorporation can also be retarded by inducting the process under an atmosphere of nitrogen or natural gas. In order to assist the recovery of tellurium from the slag, a layer containing sodium or potassium hydroxide may be formed on the surface of the pool prior to addition of the alkali metal. The process may be carried out at temperatures between the melting-point of lead and 1200‹F, preferably at 800-850‹F. The alkali metal is used in an amount equivalent to 0À3 to 0À8 lbs sodium for every 1b of tellurium. Selenium and sulphur may be removed coincidentally.
Patent GB-1331251-A (GB)
Title: Electrochemical processes
IPC: C25B9/16
Filed: 1970-12-22
Abstract: 1331251 Electro-chemical processes C J B DEVELOPMENTS Ltd 22 Dec 1970 [2 Jan 1970] 210/70 Heading C7B In an electro-chemical process such as the production of hypochlorite from a solution of chloride or from natural sea water at least one of the electrodes comprises a mass of particles forming a semi-conductive or poorly conductive bed, the particles being compressed by application of a pressure of at least 1 lb/in<SP>2</SP> and the fluid comprising the reactants for the electrochemical reaction is caused to flow through the mass of particles. An electrically conducting member may be employed in conjunction with the mass of particles as a feeder electrode. The particles, e.g. of graphite or magnetite, may be granular or spherical and may have a size in the range 50 microns to 5000 microns. Alternatively the particles may be beads of non-conducting or poorly-conducting material such as graphite, glass or titanium coated with a film of highlyconducting material such as platinum. In a modification the electrode defined above, or the other electrode of the cell may be a mass of highlyconductive particles under an applied pressure of at least 1 lb/in<SP>2</SP> in conjunction with a poorly-conducting feeder electrode. In an example a cylindrical cathode of perforated steel sheet contains a concentric cylindrical porous diaphragm which in turn contains a mass of particles of graphite in contact with an anode conducting member and a fluid distributer inlet, the particles being compressed by a load applied to an insulating cover.