baber/WOPTO huggingface dataset:
Patent GB-1231227-A (GB)
IPC: G11C16/04
Filed: 1968-06-17
Abstract: 1,231,227. Field effect transistor memory circuits. SPERRY RAND CORP. 17 June, 1968 [23 June, 1967], No. 28724/68. Heading H3T. [Also in Division G4] In a memory circuit including an insulated gate field effect transistor 1 having a plurality of different conduction thresholds, means 27 is provided for applying different voltage pulses having values above a certain magnitude to the gate electrode to establish the thresholds and means 9 is provided for monitoring the current flow through the source and drain of the FET 1 in response to a voltage 14, having a value below the certain magnitude, applied to its gate. To write in bit 1 ganged switches 18 and 30 are altered opposite to that shown. Transistor 21 is biased off which allows negative source 20 to turn transistor 5 on. Transistor 6 is biased on by source 14. By applying a write pulse to 35, or 37 transistor 31 or 32 conducts to connect either a positive or negative high voltage source 33 or 34 via line 15 so that transistors 5 and 6 are on. Transistor 6 has a conduction impedance of about ten times that of transistor 5 so that most of the positive or negative voltage from 33 or 34 is applied to the gate of the variable threshold transistor 1. This causes the conduction threshold to shift to e.g. -1 volts or -10 volts respectively which represents storing a "1" or "0". To read out the information stored the switches 18 and 30 are moved to the position shown, this allows the negative sources 14 and 29 to be applied to the storage cell 7. Transistor 28 is similar to transistor 6 having a conduction path ten times that of transistor 5 so that the voltage at the gate of transistor 1 is about half of the supply 14 such as -5 volts. If the cell 7 is storing a "1", then transistor 1 conducts and prevents conduction of transistor 12 so that the output 10 is connected to source 14. However if a "0" is stored transistor 1 is biased off and transistor 12 turns on to make the output 10 zero. The memory includes a similar read and write circuit 42, 43 for bit 2 of word 1 for a similar memory cell 26. A second word may be read or written into other similar memory cells 40, 41 by selecting circuit 45. By altering switches 23, or 44 to select pulse source 25 or 46 the corresponding transistor 5 is biased off so that the state of the associated memory cell cannot be altered by read and write operations to memory cells of another word. The insulating gate material used for the variable threshold transistors 1-4 may be of silicon nitride as described in Specification 1,125,650 or silicon oxynitride as described in Specification 1,130,138. The fixed threshold field effect transistors such as 5 and 6 may be as described in Specification 1,208,077
Patent GB-1231561-A (GB)
IPC: B01J8/18
Filed: 1969-01-27
Abstract: 1,231,561. Contacting vapours with liquids. IMPERIAL CHEMICAL INDUSTRIES Ltd. 31 Dec., 1969 [27 Jan., 1969], No. 4450/69. Heading B1R. In a distillation process employing a column with cross-flow trays there is provided, above at least some of the trays, a mass of spherical bodies which in operation are agitated or fluidised by rising vapour.
Patent GB-1233115-A (GB)
IPC: G03B27/58
Filed: 1969-09-03
Abstract: 1,233,115. Photo copying Apparatus. AB. GITSON-SYSTEM. Sept. 3, 1969 [Sept. 3, 1968], No.43672/69. Heading G2A. In photo copying apparatus images of different lengths are made on successive portions of a web (3) Fig. 1 (not shown) of copying paper, the paper being advanced after each exposure by an amount equal to the length of the image just made. To select the desired image length, a wheel 39 is rotated, thereby turning a lead screw 37 to advance or retract a slide 35 to which is pivotably connected a masking strip 27 having a curtain 33 attached thereto. The movement of the slide 35, besides advancing or retracting the masking strip 27, also alters the position of an abutment 22 on a rod 40 carried by the slide. Thus the abutment 22 accompanies the masking strip 27 when this is adjusted. The abutment 22 forms one end stop for a lever arm 11 on which is mounted a transport device 10. The device 10 comprises elements (23, 24) one above and one beneath the web, which elements are held together by magnetic force so as to engage and advance the web only when the device 10 is moved from right to left as seen. The distance so moved is as described above, dependent on the setting of the abutment 22, i. e. on the length of the image just made, exposure taking place between setting the mask 27 and moving the lever arm 11 by means of a doubleaction hydrostatic diaphragm motor. After the web has been advanced, the elements (23, 24) are disengaged from the web and the device 10 and arm 11 return to the position shown, ready for the next image length selection. An end stop 21, defining the other end of the arc of movement of the lever 11, has two positions, one resulting in no lengthwise gap between successive images on the web, the other allowing of a border to be formed. The apparatus is provided with a magazine (1) for reels of different width copy paper. The image area on the web is restricted laterally by movable guide strips 29 for guiding the web edges, the strips having flanges so as to give lateral borders on the images made. Recesses in the platen on which the web rests during exposure are provided for the guide strips 29 at positions corresponding to the different widths of paper in the magazine.
Patent GB-1233184-A (GB)
IPC: B29C51/36
Filed: 1968-01-13
Abstract: 1,233,184. Sheet forming. I. E. LITTLE. 8 April, 1969 [13 Jan., 1968], No. 2036/68. Heading B5A. In a vacuum-forming process a sheet drawn from a roll 9 is clamped over a vacuum box 1, and drawn into the box over an increasing area starting from one end by applying a vacuum to the box and then moving a heater 12, dimensioned to heat only a fraction of the clamped area of the sheet over the sheet.
Patent GB-1233531-A (GB)
IPC: F02M1/00
Filed: 1967-03-02
Abstract: 1,233,531. Induction systems; treating charge. STANDARD-TRIUMPH MOTOR CO. Ltd. May 30, 1968 [March 2, 1967 No.9816/67. Heading F1B. Fuel droplets are separated or vaporized in an induction chamber rotor devise with an inlet 15 for connection to a carburettor and an outlet pipe 18 for connection to the engine. The mixture entering at 15 flows upwards through a long chamber 30, in which large droplets tend to settle, and then flows through a hemisphorical head portion 23 to an outlet aperture 19 leading into the outlet pipe 17. Upstanding sides 20, 21, deflect droplets away from the aperture 19. Droplets separated by the vortex in the head portion 23 collect in a trough 28 beneath the pipe 17 and are returned to the mixture stream through pipe 32. The cavity 22 is heated by exhaust gases or coolant flowing through jacket 12. A drain pipe 33 returns fuel collecting at the bottom 27 to the fuel system.
Patent GB-1252215-A (GB)
IPC: G01N27/406
Filed: 1969-06-13
Abstract: 1,252,215. Electro-chemical analysis. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. June 9, 1970 [June 13, 1969], No.30210/69. Heading G1N. The carbon content of molten sodium or steel or a furnace atmosphere is measured using a device comprising an enclosure 15 of a metal in which carbon is soluble and mobile at the operating temperature containing an electrolyte including carbide ions and a reference electrode 18 containing carbon, by measuring the potential difference between 15 and 18. For measuring the carbon content of liquid sodium, the enclosure 15 may be of iron, nickel or an alloy of iron or nickel. The electrolyte may be a 10 mol per cent solution of calcium carbide in calcium chloride. The inner electrode 18 may be of carbon dispersed in a metal matrix or pure graphite.
Patent GB-1258561-A (GB)
IPC: B23K15/00
Filed: 1967-10-02
Abstract: 1,258,561. Welding by fusion. WELDING INSTITUTE. 31 Dec., 1968 [2 Oct., 1967], No. 44725/67. Heading B3R. In electric welding using, e.g. electron beam, T.I.G., or micro-plasma arc processes, in which a thin consumable filler wire is fed into the molten weld pool, the filler wire 2 is guided by a guide which causes the wire to enter the weld pool along a curved path which is convex towards the work, and which guide affords surfaces for guiding the lateral and outer circumferential surfaces of the wire which is fed into re-entrant surfaces 3, 4 formed in the work. Welding apparatus includes a torch 5 and wirefeed mechanism 12 (Fig. 1) in which filler wire passing from a reel 11 over a dancer-arm wheel 16, fixed pulley 22 and traction wheel 23 cooperable with an adjustably biased pressure roll 25, enters a guide tube 31-extending to adjacent the weld pool. Both the wheel 23 and roll 25 are formed with V-groove peripheries for receiving the wire. The guide tube 31 includes an inner tube 33 of stainless steel adjustably retained at its upper end by a nylon collet 35 and projecting at both ends from an outer soft copper tube 32 mounted at its upper end in a split ball joint 34 allowing angular, rotational and axial adjustment. The centre of curvature of the guide tube lies approximately on the perpendicular from the weld pool. By virtue of the relative locations of the tip of the inner tube 33 and the groove defined by the surfaces 3, 4, the filler wire is sprung into the groove and guided thereby to the weld pool. In butt welding thin sheets either or both abutting surfaces may be chamfered to form the groove, and the chamfers may be plane, concave or convex. The surfaces of the workpieces 1 to be joined may be aligned (Fig. 3, not shown) or staggered, as shown. The workpieces and wire may be of maraging steel. The torch 5 which has an electrode (6) (Fig. 2, not shown), an inner duct (7) for passage of argon plasma-forming gas, and an outer annular duct (8) for shielding gas comprising argon and 1% hydrogen, is adjustable on the plate 13 of the wire feed mechanism and the plate 13 is carried on a manually operated XY axis traverse slide head mounting (not shown). The wire reel 11 is braked, and a motor having an electro-mechanical governor drives the traction wheel 23 via step-down gearing. The work may be fed past the torch.
Patent GB-1265699-A (GB)
IPC: B43L5/02
Filed: 1969-10-08
Abstract: 1,265,699. Drawing-boards. H. DUSSAIX. 8 Oct., 1969 [8 Oct., 1968], No. 49358/69. Heading B6P. A drawing-board 1 has attached to its underside a supply roll 2 of paper, and pairs of driving rollers 4a, 4b and 4c, 4d. The paper may be rewound or cut off at 5. The driving rollers may be turned by hand and may each comprise a plurality of roller sections (Fig. 6, not shown). Two webs of paper may be provided, the webs being fed at right angles to each other.
Patent GB-1266696-A (GB)
IPC: B41N7/04
Filed: 1969-06-05
Abstract: 1,266,696. Woven fabrics; fountain rollers. R. W. HOFFMANN and R. HOFFMANN [trading as ROLF. W. HOFFMANN OHG.] 5 June, 1969 [5 June, 1968], No. 28439/69. Heading D1K. [Also in Division Dl] A fountain &c roller is covered by a woven tubular fabric having elastic weft threads and non-elastic warp threads so that it tightly grips the roller. The weft threads may be of rubber and the warp threads of cotton.
Patent GB-1290292-A (GB)
IPC: C21B13/00
Filed: 1971-04-19
Abstract: 1290292 Extracting iron from minerals METALLGESELLSCHAFT AG 19 April 1971 [26 Feb 1970] 20539/71 Headings C1N and C1A [Also in Division C7]  A mineral containing iron oxide is processed to recover unchanged heavy metal oxide and sponge iron by reducing the iron oxide content to metallic iron, leaching the reduced material and regenerating the leaching agent with oxygen-containing gases, separately recovering the unchanged oxide and the precipitated iron oxide or hydroxide, agglomerating the precipitate, and recycling the agglomerated material to the reduction stage where it is simultaneously reduced to sponge iron. The mineral is preferably ilmenite, but Cr, Mn and V ores are referred to. It may be preroasted in O 2  at 750-1250 C. in a shaft or rotary kiln, and the iron oxide agglomerates may also be fed to this step. Reduction may be effected at 700-1300 C. in a rotary kiln with carbon or in a shaft kiln with reducing gases. Leaching may be effected at 45-75 C. using FeCl 3  or Fe 2 (SO 4 ) 3  solutions. The O 2  may be introduced during leaching, in which case the iron oxide is separated from the unchanged oxide by gravity and filtration, the filtrate being recycled to the leaching. The iron oxide may be agglomerated using bentonite as binder and some Fe fines from the reduction may be added. The reduced ore may be separated from the agglomerates of sponge iron by a vibrating screen. The TiO 2  may be converted into TiCl 4 .
Patent GB-1290486-A (GB)
IPC: B01F5/00
Filed: 1968-10-25
Abstract: 1290486 Mixing device FOSECO INTERNATIONAL Ltd 27 Oct 1969 [25 Oct 1968] 50785/68 Heading B1C Apparatus for dispersing solid particles into a liquid comprises a conical funnel 2, at least one hopper 1 for the solid particles located above the funnel, the or each hopper being provided with an annular flow-regulating plug 6, and at least one nozzle 13 arranged to direct liquid in a vortical flow path through the funnel. The or each hopper may be provided with a slide 3 to stop the flow of solid particles, and the funnel may be provided with an overflow pipe 15. Both the hopper and funnel may be covered.
Patent GB-1296179-A (GB)
IPC: C07C27/00
Filed: 1971-04-19
Abstract: 1296179 Alkylphenol compounds SUMITOMO CHEMICAL CO Ltd 19 April 1971 [15 April 1970] 26308/71 Heading C2C 3-Alkyl, especially (C 1-3 ) 1 ,-5-t-butylphenols are made by contacting 3-alkyl-6-t-butvlphenols with AlCl 3 .
Patent GB-1296775-A (GB)
IPC: F01C21/08
Filed: 1970-04-10
Abstract: 1296775 Rotary pumps and motors ABEX CORP 10 April 1970 [21 April 1969] 17249/70 Heading F1F In a multiple abutment sliding vane pump or motor in which each vane 29, Fig. 2, is formed with grooves 54 in its radial outer surface 70 and opposite side surfaces 71 so that each vane is in hydraulic balance. Each vane is acted upon by a piston 59 subjected on its inner face to the pressure within an internal annular pressure chamber 57 which communicates with the high-pressure side of the pump or motor to urge the vanes radially outwards into sealing engagement with the cam surface 30 of the cam ring 20. A spring-loaded non- return valve 65, Fig. 1, is inserted between the said chamber and the high-pressure side of the pump or motor and opens only when the pressure on the high-pressure side of the pump or motor exceeds that in the said chamber. Instead of the chamber 57 being formed in a resiliant member 58 of, e.g., neoprene disposed between a splined shaft 15 and rotor 25 (as shown) the shaft and rotor may be of unitary construction and the chamber formed in the rotor. A check plate 27 is subjected on its rear face to pressure at the high-pressure side of the pump or motor to seal the axial end faces of the rotor.
Patent GB-1296990-A (GB)
IPC: B21D53/08
Filed: 1969-12-23
Abstract: 1296990 Plate heat exchangers E G JOUET and P A P REBUFFE 23 Dec 1969 [27 Dec 1968 20 June 1969 8 July 1969] 62643/69 Heading F4S A heat exchanger consists of a casing 10 containing a spirally wound plate assembly (shown as comprising spirally wound plates 14, 16) defining passages 18, 20 therein for two heat exchanging fluids, said casing defining at the ends of the spiral, inlet and outlet chambers 35, 37 for one of the heat exchanging fluids flowing axially through the passage 20; and said casing containing a centrally disposed tube 12 partitioned, e.g. at 26, to define inlet and outlet chambers 40, 42 for the other heat exchanging fluid which flows via ports 24 in the tube 12, in a spiral path bounded by end closures 32, Fig. 4 (or 34, Fig. 5) and a central partition 28, Fig. 1, first outwardly to a passage 30 and then inwardly back to the centre of the spiral and the chamber 42. The interspaces between the spiral plate assembly and the casing 10 and tube 12 may be filled with a mouldable material, e.g. metal, plastics or concrete (e.g. 46, Fig. 7). At least the plate 14 of the spiral plate assembly is formed with bosses 15, Fig. 4 (and Fig. 6) which extend into contact with the adjacent plate 16 and serve to turbulate the fluids.
Patent GB-1297679-A (GB)
IPC: F16J15/20
Filed: 1970-02-09
Abstract: 1297679 Seals GREENE TWEED & CO Inc 9 Feb 1970 [16 June 1969] 6115/70 Headings F2B and F2T A sealing construction, e.g. for a piston-rod 16<SP>1</SP> or piston (not shown), includes a stack of nested sealing rings 26<SP>1</SP>, at least one of which has lip portions 34, 36, Fig. 3, having surfaces 46, 48 converging at 90-180 degrees, and preferably about 115 degrees, to define sealing edges 50. The rings 26<SP>1</SP> are of rubber or synthetic plastics material, e.g. a carboxylate butadiene acrylonitrile copolymer, and have stems 38 engageable in corresponding cavities 40 to facilitate stacking. Spreader rings 22<SP>1</SP>, 30<SP>1</SP> are provided at each end of the stack, while an end plate 18<SP>1</SP> urges the stack against a loading spring 32.
Patent GB-1301252-A (GB)
IPC: G01N21/31
Filed: 1971-06-29
Abstract: 1301252 Photo-electric spectrometers TECHNICON INSTRUMENTS CORP 29 June 1971 [30 July 1970] 30347/71 Heading G1A [Also in Divisions F4 and G2] An optical system for use in an atomic spectroscopy analysis apparatus comprises a plurality of radiation sources, e.g. hollow cathode lamps 22, 28, and toroidal mirror means for reflecting the radiation from each source and focusing the radiation within the same region of the sample flame 16. The toroidal mirror means may be toroidal mirrors e.g. 51, 57, arranged in a circular array each mirror corresponding to one of a circular array of radiation sources. Switching device 124, coupled with filter wheel 96 may activate each source in turn. Mirror system 104, 110 focuses light emitted from the flame through a filter or filter wheel 96 to photodetector 86. Baffles 81, 112, 111 may be provided to ensure that light other than that following the correct paths is excluded from the detector.
Patent GB-1301448-A (GB)
IPC: C07C59/64
Filed: 1970-01-20
Abstract: 1301448 Preparation of methoxynaphthylpropionic acid and intermediates therefor SYNTEX CORP 20 Jan 1970 [30 Sept 1969] 31632/72 Divided out of 1300591 Heading C2C 2 - (6 - Methoxy - 2 - naphthyl) propionic acid is prepared by hydrogenating a compound I: in which R is Cl, Br or I, in the presence of a catalyst until hydrogenolysis is complete and optionally resolving a dl-mixture thus formed. Compounds I are claimed per se and are prepared by reacting a compound I in which R is OH with SOCl 2  or SOBr 2  to give compounds I where R is Cl or Br followed if desired by reaction of compound I where R is Br with NaI to give the iodo derivative. Pharmaceutical compositions comprising 2-(6- methoxy - 2 - naphthyl) propionic acid when prepared as above, together with an excipient are used in treating inflammation, pain and pyrexia.
Patent GB-1306083-A (GB)
IPC: H04N5/073
Filed: 1969-05-09
Abstract: 1306083 Remote control of T.V. cameras EMI Ltd 5 May 1970 [9 May 1969] 23656/69 Heading G4H Control signals to an underwater T.V. camera are transmitted over the conductor carrying the returning camera video signal during either line or field blanking periods of the video signal. The control signals are superimposed on a D.C. power signal which is transmitted either continuously or only with the control signals. In the arrangement of Fig. 1, switches SW1 and SW2 in the camera and surface receiver, respectively, in a first position pass video signals from a camera terminal 3 over a coaxial cable 12 to a video output terminal 4. Timing generators 8 and 7 detect line, or alternatively field blanking periods in the video signal and change the two switches to a second position so connecting a control signal transmitter 1 over the cable 12 to a receiver 2. Variable control potentials controlling, for example, pan, tilt and focus of the camera, are applied to terminals 14-16 and produce for each control a serial pair of amplitude significant pulses, the pulses of a pair being of equal and opposite amplitude, which are superimposed upon a D.C. power signal. The respective pairs may be transmitted one after another in a predetermined sequence during a single field blank period. Alternatively the pair of each control may be sent once during each of a group of successive line blank periods, one control after another in successive groups.
Patent GB-1309395-A (GB)
Title: Manufacture of porous articles
IPC: C01G43/025
Filed: 1970-02-27
Abstract: 1309395 Porous metal oxide UNITED KINGDOM ATOMIC ENERGY AUTHORITY 19 April 1971 [27 Feb 1970] 9735/70 Heading C1A A porous oxide of a metal which forms 2 stable oxides is produced by sintering the oxide having the higher oxygen/metal ratio and then heating without a reducing agent while continually removing O 2  until the oxide with the lower oxygen/metal ratio is produced. The O 2  may be removed by continuously venting the furnace atmosphere or by flushing with an O 2 -free gas e.g. Ar. The preferred metal is U. Particles of U 3 O 8  may be sintered at 800, 1000, or 1400‹ C., then placed in graphite crucibles and heated at 1600‹ C. Alternatively the sintered particles may be heated at 1300‹ C. in graphite crucibles and then at 1600‹ C. in Mo crucibles in a reducing atmosphere, e.g. H 2 . The U 2 O 8  particles may be formed using Al stearate or stearic acid as binder.
Patent GB-1314335-A (GB)
Title: Electric switches
IPC: H01H15/02
Filed: 1969-07-24
Abstract: 1314335 Terminals NSF Ltd 24 July 1970 [24 July 1969] 37248/69 Heading H2E [Also in Division H1] In a switch comprising an insulating housing 10 providing recesses 12, 13, 14, 15, containing fixed contacts 17, 18, 19, 20, and a movable actuator 26 carrying revolvable contacts 29, 30, spring steel wire trap members 21, 22, 23, 24 are provided to grip connecting wires inserted through holes 12a against the terminal portions, such as 17a, of the fixed contacts. A terminal block 73, Figs. 3, 6 (not shown), may also be provided, the connecting wire passing through a bore 77 in block 73 in which it is held by screw 78 and also being held by the wire trap member, or alternatively it may just be held by block 73 above, the resilient wire trap member serving to urge block 73 against the terminal portion of the fixed contact. When two connecting wires are to be held to one fixed contact, a wire trap member 22 may grip one wire against terminal portion 18a, Fig. 4 (not shown), and a hole 82, Figs. 4, 5 (not shown) may be provided in housing 10 adjacent the rear of terminal portion 18a and the second wire may be inserted through hole 82 being retained therein by a resilient tongue 18b on portion 18a. Alternatively when two wires are to be connected to a fixed contact, the fixed contact may have a terminal portion at each end and at one end a wire-trap member as shown in Fig. 1 may grip the wire and at the other end of the contact a hole and projecting tongue may be provided, Fig. 6 (not shown).
Patent GB-1314438-A (GB)
Title: Automatic central buffer couplings for rail vehicles
IPC: B61G3/14
Filed: 1970-12-02
Abstract: 1314438 Operating central buffer couplings GERMANY MINISTRY OF TRANSPORT 2 Dec 1970 57266/70 Heading B7T An arrangement which allows manual or automatic release of the bolt of the lock of an automatic central buffer coupling using respectively either the usual actuating shaft (not shown) or a drive unit 1, consists of a spindle 3 operatively  connected at one end to the bolt and having at its other end a plate 4 carrying a pin 6 and member 15, the drive unit, comprising a piston and cylinder device, being connected with the pin 6 to operatively rotate the spindle 3 by a slotted bar 10, and the actuating shaft being connected to a driver 7 rotatably mounted on the end of spindle 3 and provided with a tooth 8 which engages pin 6. On automatic operation the piston causes rotation of pin 6 in the direction of arrow A to rotate spindle 3, and on manual operation the driver 7 is rotated causing the pin 6 to move in a slot 11 in bar 10 by the engagement of tooth 8 and again rotate spindle 3.