baber/WOPTO huggingface dataset:
Patent GB-1003041-A (GB)
Abstract: 1,003,041. Waveguide attenuators. VARIAN ASSOCIATES. June 21, 1962, No. 24005/62. Heading H1W. [Also in Division H3] In a microwave mixer comprising a rectangular metallic waveguide section 5 capable of supporting a pair of orthogonally polarized dominant transverse electric waveguide modes the local oscillator input to the section 5 includes a dumb-bell-shaped iris 15 having an attenuator 18 positioned across the centre of the iris. The attenuator 18 is in the form of a strip of mica metallized with a thin film of platinum. Coupling between klystron 2 and mixer cavity 6 is varied by means of coupling screw 17 extending across the iris 15 and forming a reactive coupling gap 17<SP>1</SP>. Specification 956,728 is referred to.
Patent GB-1028416-A (GB)
Abstract: 1,028,416. Semi-conductor devices. SIEMENS-SCHUCKERTWERKE A.G. May 8, 1963 [May 8, 1962], No. 18286/63. Heading H1K. The zero-point errors of a Hall generator are reduced by mounting it on a thermally conductive base plate. As shown, Fig. 1, a semiconductor wafer 5 and a mica wafer 8a are mounted in an air gap of a magnetic circuit comprising ferrite blocks 1, 2, 3. A coil 4 surrounds block 3 and non-magnetic supports 6, 7 are provided. A mica wafer 8 is inserted between the device and a copper base plate 9 and the whole is enclosed in a magnetically screening housing 10. The Hall plate may be of indium antimonide and the control electrodes may be connected to strips of the same semi-conductor material which extends towards each other and to which the control conductors are joined at their adjacent ends to reduce errors produced by thermo-electric effects, Fig. 2 (not shown). The Hall plate may also be etched from a single wafer with the compensating control arms formed integrally with the active area which is etched much thinner than the arms. Fig. 3 (not shown).
Patent GB-1042619-A (GB)
Abstract: 1,042,619. Valves. S. BORGEDAHL. Nov. 11, 1963 [Nov. 13, 1962], No. 44475/63. Heading F2V. A valve controlling the flow of heating medium to a radiator comprises a body formed with diametrically opposite inlet and outlet sockets 3, 2 for connection into the heating mains and a non-rotatable pipe 5 having an aperture 6 whereby the central portion of the inlet flow enters the aperture and flows to the radiator while the outer portion of the flow passes directly to the outlet 2 and also provides a suction effect on flow from the radiator through the space between the pipe and housing and past an aperture 8 in a flange 7 to the outlet. A rotatable valve member 9 has an aperture 11 corresponding to the aperture 6 and an aperture 12 in a flange 10 corresponding to the aperture 8. The valve member is rotated by a handle 18 through pins 16. In a modification, the feed pipe 5 also acts as the valve member and is moved axially by a rack and pinion on a pin which controls the aperture 6 while a valve member on the feed pipe closes on the end of the housing.
Patent GB-1047494-A (GB)
IPC: F02B3/06
Abstract: 1,047,494. Liquid fuels. ESSO RESEARCH & ENGINEERING CO. Jan. 28, 1964 [Jan. 30, 1963; June 3, 1963], No. 8474/66. Divided out of 1,047,493. Heading C5G. A fuel composition comprises a hydrocarbon fuel and a minor proportion of an ester obtained from the reaction of a glycol and a dicarboxylic acid having at least 9 carbon atoms between the carboxylic groups. Mono-esters are preferred. The fuel may be gasoline, aviation turbo fuel, kerosene, diesel fuel or jet fuel. The glycol may be ethylene, propylene, polyethylene or polypropylene glyco], or 4-oxa-heptane-diol-2,6. The preferred acid is a dimer of linoleic acid; there may also be used dodecane-1,12-dicarboxylic acid, a mixture of acids produced by distilling castor oil over sodium hydroxide, and polymerized dienoic and trienoic acids. The acids may contain bromine, fluorine or hydroxy substituents. The concentration of ester in the fuel may be from 0.001 to 1.0% by weight. The fuel may also contain rust inhibitors, e.g. lecithin or petroleum sulphonates, sorbitan mono-oleates, anti-emulsifying agents, corrosion inhibitors, anti-oxidants, e.g. phenothiazine or phenyl-alpha-naphthylamine, dispersants, dyes, dye stabilizers, haze inhibitors, antistatic agents, detergents, e.g. the barium salt of isononyl phenol sulphide, pour-point depressants, e.g. copolymers of vinyl acetate with fumaric esters of coconut-oil alcohols, and viscosity index improvers, e.g. polymethacrylates.
Patent GB-1050300-A (GB)
IPC: F15B13/043
Abstract: 1,050,300. Valves. E. HERIOW. June 23, 1964 [July 5, 1963], No. 25866/64. Heading F2V. A reversing valve for connecting outlet ports 5, 5<SP>1</SP> alternately with an inlet 3 and exhaust ports 4, 4<SP>1</SP> has an indicator attachment 13 passing without friction through the end of the valve housing and enclosed by a transparent or translucent cap 14 sealed by an 0-ring to the housing. The cap may be flanged for attachment to the housing or it may be enclosed by a housing 16 with a fixing flange and an inspection cut-out 18 for observing the attachment 13 which may be coloured red. The valve is actuated by differential pistons 7, 8 under the control of one or two hand or magnetically operated auxiliary valves 2.
Patent GB-1050771-A (GB)
IPC: A01N59/26
Abstract: 1,050,771. Herbicides. PENNSALT CHEMICALS CORPORATION. March 30, 1965 [April 6, 1964], No. 13474/65. Heading A5E. Herbicidal compositions contain hexaflurophosphoric acid or a salt thereof as the active ingredient. A particulate solid or liquid carrier is present and liquid compositions also contain a wetting and/or emulsifying agent and may be aqueous solutions or aqueous-organic emulsions. The preferred salts are alkali-metal, ammonium or substituted ammonium salts, specific examples including K, NH 4 , dimethyltridecyl ammonium, ethylammonium or triamyl ammonium hexafluorophosphate. The compositions are particularly useful as preemergent herbicides and contain 1-90% by weight of active herbicidal agent.
Patent GB-1051404-A (GB)
IPC: C01C3/02
Abstract: 1,051,404. Hydrogen cyanide. MONSANTO CO. June 2, 1964, No. 22809/64. Heading C1A. HCN is prepared by reacting hydrogen gas with the vapour of an organic mononitrile in the absence of a catalyst at elevated temperatures, e.g. 600-850‹ C. Reaction times may vary from 0À1-50 seconds and the molar ratio of nitrile to hydrogen may be in the range 1À0 : 0À5 to 1 : 100. A large number of suitable mononitriles are exemplified of general formula RCN where R is an alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, alkaryl or aralkyl group containing from 1-20 carbon atoms. The reaction may be performed in an otherwise empty tube of, e.g. silica, quartz, heat resistant glass, porcelain or inert metals at atmospheric, superatmospheric or subatmospheric pressure. Inert gases, e.g. argon or nitrogen can be employed as diluent.
Patent GB-1107064-A (GB)
Abstract: 1,107,064. Drilling. SOCIETE MODERNE DE CONSTRUCTION MECANIQUE. 3 May, 1966 [3 May, 1965], No. 19497/66. Heading B3C. A drilling head comprises a body 1 adapted to be clamped to a milling machine, means for increasing the speed of rotation of the power transmission shaft 21, and first and second means for vertically adjusting the transmission shaft 21 to any desired position on a line coincident with the axis of rotation of the shaft. A conical shank 11 is adapted to be attached to the spindle of the milling machine. Satellites 26 turning on axes 27 screwed in the shank 11 are provided between a fixed crown wheel 7 and a pinion 22, the spindle 21 being driven by the planetary train 7, 22, 26 at increased speed. The pinion 22 is rotatable by means of double armed pins which are engaged in grooves 20. The first adjusting means comprises an operating lever arm 40 attached radially to a shaft 38 mounted in the body 1 and carrying a first pinion 36 which engages a rack 35 on the casing sleeve 29 of the spindle 21, the shaft 38 carrying a spring 42 which provides a return movement of the shaft when the lever is released. The shaft 38 carries a second pinion 63 to be engaged with the second adjusting means comprising an eccentric sleeve 66 in the body 1 rotatable through 180 degrees by means of a shaft 65 inside the sleeve and operable by a hand wheel 72. A worm gear 64 is attached to the end of the shaft 65 adjacent to the second pinion 63 of the first adjusting means so that when the sleeve 66 is rotated through 180 degrees by the rod 70, the worm gear 64 comes into contact with the second pinion 63. The slidable casing 29 carrying the spindle 21 is clamped to the body 1 by a bolting device 59 when the device is to be used for milling.
Patent GB-1227121-A (GB)
IPC: C04B41/49
Filed: 1967-06-30
Abstract: 1,227,121. Water-repellant coatings. MIDLAND SILICONES Ltd. 28 June, 1968 [30 June, 1967], No. 30233/67. Heading B2E. Masonry is rendered water repellant by application of a coating composition comprising a solution or dispersion in a liquid organic diluent of: (a) an organopolysiloxane resin, (b) 2-120% by wt (based on (a)) of an alkyl orthosilicate or partial hydrolysis product thereof, and (c) 2-40% by wt of (a) of an organic ester of orthotitanic acid. Suitable diluents are hydrocarbons, e.g. xylene or chlorinated hydrocarbons. The total of (a), (b) and (c) may be 5-15% by wt of the composition; (a) may contain 1-1.5 organic radicals per Si-atom which may be methyl or methyl and phenyl radicals. Tetraisopropyl titanate is a suitable ester.
Patent GB-1227422-A (GB)
IPC: B60V3/04
Filed: 1968-02-26
Abstract: 1,227,422. Hover-train. ROLLS-ROYCE Ltd. 19 Feb., 1969 [26 Feb., 1968], No. 9196/68 Headings B7K and B7L. A mono-rail vehicle 10 is provided with bogies 15 which are connected to the vehicle by hollow rubber air-filled springs 17 and by a tie bar structure 20, 22, 23, 24, 25 permitting relative pivotal movement and which are maintained in a desired position with respect to the rail 11 by air cushions. The body is powered by two gasturbine engines 13 and has skirts 14 on opposite sides of the mono-rail. In addition, for lower speeds, e.g. through a built-up area at less than a hundred miles per hour alternative quieter forms of propulsion such as linear induction motors 33 or retractable traction motors (35), Figs. 4 and 5 (not shown), are provided. The air cushions are composed of guide pads 32 which are disposed on opposite sides of and adjacent to the mono-rail, and lift pads 31.
Patent GB-1227772-A (GB)
IPC: B01D53/22
Filed: 1968-05-02
Abstract: 1,227,772. Separating gas mixtures by diffusion. GENERAL ELECTRIC CO. 2 May, 1968 [30 June, 1967], No. 20847/68. Heading B1L. Apparatus of the countercurrent flow type for separating gas mixtures by diffusion is constructed by forming a sandwich of gaspermeable membranes 14, 16 and woven separators 12, 15 defining separate flow regions A, B, C.., edge portions 13 being treated with a warm soluble waxy compound which solidifies on cooling. A potting compound 30 is used to seal the periphery of the sandwich and the waxy compound is then washed away (as at A, C) to define entry and exit passages, such that in the resulting structure gas supplied to any flow region cannot leave except through the appropriate exit passageway or through a membrane into an adjacent flow region. As described, the membranes are of silicone rubber, the waxy compound is a polyethylene glycol (M.W.=700 to 20,000) and the potting compound is a vulcanising rubber containing a siloxane. Wax is applied at corners 13, the others being cut off; the periphery is potted using a mould, the corners of the sandwich are further cut back, and the wax is washed away with water. Thus alternate flow regions A, C are exposed at each corner.
Patent GB-1228730-A (GB)
IPC: E01H5/00
Filed: 1969-05-09
Abstract: 1,228,730. Snow-clearing vehicles. ELECTRONIC ASSISTANCE CORP. 9 May, 1969 [15 May, 1968], No. 23785/69. Heading E1G. In a snow-clearing vehicle snow deposited in a hopper 14 is melted by mechanical compaction in a chamber 12 and is then released to form discharge water or ice. In the vehicle shown the snow is picked up by front rotary screw blades 26, 28 and a conveyer 20. The chamber 12 at the base of hopper 14 incorporates a compacting plate 32 actuated by an operator-controlled hydraulic cylinder 38, and an ice-extrusion plate 42 actuated by a cylinder 48. When sufficient snow is in the hopper 14 the cylinder 38 is actuated first to compact and then to release the snow in chamber 12 If the ambient temperature is warm enough the released snow-melt stays liquid and is discharged through rear opening 44, but at lower ambient temperatures the released snow-melt turns to ice. In the latter case the cylinder 48 is actuated to extrude the ice 56 through opening 44, where it either falls to the ground or (as shown) is lifted by a conveyer 52 to a dump truck 54.
Patent GB-1228932-A (GB)
IPC: E04B1/348
Filed: 1968-07-01
Abstract: 1,228,932. Prefabricated room unit. P. E. MALMSTROM. 1 July, 1968 [7 July, 1967], No. 31240/68. Heading E1A. A prefabricated building unit has a ceiling 3, a floor including a grid of parallel steel load-bearing beams or a network of steel girders 4 and 5 and two opposed walls 1 and 2 the ceiling and walls being of reinforced concrete. The ceiling may be rebated at 6 to receive the girders 4 of a further unit with interposition of sound insulating layers 7. An internal transverse wall with a permanently attached cabinet may be provided. Sheet formed elements which may include doors and windows may be attached on site to the units, the walls 1, 2 of which may themselves include doors and windows.
Patent GB-1232217-A (GB)
IPC: B41J1/34
Filed: 1968-08-26
Abstract: 1,232,217. Selective printing. SINGER CO. 26 Aug., 1968 [2 Oct., 1967], No. 40703/68. Heading B6F. A high speed printer comprises a print wheel 12 continuously rotated by a motor 24 and adapted to print characters on a paper strip 22 which is fed in the letterspace direction by a friction roller 32 continuously and in synchronism with the rotation of the print wheel. The friction roller 32 is driven by the motor 24 through a worm gear 26 and gear-wheel 28. Characters 16 on the periphery of the print wheel 12 are arranged in a helical array to compensate for the movement of a printing location on the paper strip as the print wheel rotates. Impression is effected by a solenoidoperated hammer 50 in response to signals from electronic control means described and claimed in Specification 1,176,306 (see Division G4), the control means being responsive to output from a computer or a punched or magnetic tape reader. An index wheel 70 supplies counting pulses to the electronic control means. The print wheel may be inked by an inking roller 56, or an ink ribbon may be employed.
Patent GB-1232415-A (GB)
IPC: H01H15/14
Filed: 1968-02-19
Abstract: 1,232,415. Mechanical switches. ELLISTON, EVANS & JACKSON (LONDON) Ltd. 18 Feb., 1969 [19 Feb., 1968], No. 7969/68. Heading H1N. To prevent tampering with the contacts of a lift-gate safety switch of the kind wherein a bolt on the gate enters a box on the gate frame to engage a contact or contacts therein, the access to the box is restricted to an annular or partannular opening and the bolt is shaped to pass through this opening. A box 12, mounted on a lift gate frame, has a circular aperture in its front plate 16 and a metal pin 21 is electrically and mechanically secured in a boss 20 to extend between contacts 26 and limit the aperture to an annular opening through which a hollow cylindrical bolt 13, mounted on a lift gate by means of a bracket 14, enters when the gate is shut, a conductive ring 17 on the end of bolt 13 then bridging the contacts 26. The bolt 13 may also act as a safety lock by co-operation of a tooth or teeth thereon with a locking member (not shown) which prevents withdrawal of the bolt when the lift is away from a floor.
Patent GB-1233624-A (GB)
IPC: C07C69/14
Filed: 1969-02-19
Abstract: 1,233,624. Vinyl acetate. E.I. DU PONT DE NEMOURS & CO. 19 Feb., 1969 [19 Feb., 1968], No. 9039/69. Heading C2C. Vinyl acetate is prepared in a continuous cyclic process in which ethylene is reacted with a liquid working medium containing acetic acid, a palladium II compound, a metal acetate, a copper compound and a metal chloride or bromide in a reactor A, the partially reduced working medium is oxidized by oxygen in a reactor B, the vinyl acetate is removed from between A and B, and the oxidized medium from B is recycled to A. The liquid medium contains acetic acid, up to 20 weight per cent of water, and salts which provide copper cations in a concentration of from 1 to 15%, from 1 to 2 gram atoms of alkali metal cations per gram atom of copper, from 0À5 to 1À2 gram equivalent of chloride and/or bromide anions, acetate anions, and from 0À1 to 1 gram equivalent of further non-reactive anions (other than halide ions) of an acid of pK value not greater than 4, e.g. sulphuric acid. Acetaldehyde may be a coproduct the amount depending upon the amount of water present. Other strong acids to give the non-reactive are listed and they may be added as an alkali metal or copper salt. The products are removed between reactors A and B by a stripping still and fresh acetic acid may be fed to the recycle.
Patent GB-1233948-A (GB)
IPC: A61B17/04
Filed: 1968-12-04
Abstract: 1,233,948. Seaming. ULTRASONIC SYSTEMS Inc. 4 Dec., 1968 [11 Dec., 1967], No. 57581/68. Heading B5K. [Also in Divisions A5 and B3] An apparatus for ultrasonically bonding suture threads 39 and 40 comprises a support 46 having a support surface 49, a tool 55 having a working surface 56 and a transducer (65a, Fig. 3B) operative to vibrate the working surface 56 at a frequency within the range of 10,000 to 100,000 hertz with an amplitude of 0À0005 to 0À005 inches relative to the support surface so as to form an ultrasonic bond between the overlapping portions of the suture threads. In an alternative arrangement the support surface may be ultrasonically vibrated relative to the working surface (Fig. 7). The support 46 has a groove 54, for positioning the overlapping portions of suture thread and in which the working surface may fit. A forward toe portion 50 of the support is tapered to a narrow edge 51 to facilitate the positioning and removal of the support before and after the suture has been formed. The apparatus also includes two pairs of clips 91 j  which hold the free end portions 32 j  and 34 j  of the suture thread in a fixed position relative to the working tool 45 j .
Patent GB-1238907-A (GB)
IPC: G05B19/41
Filed: 1968-09-04
Abstract: 1,238,907. Machine tool details. NAUCHNOISSLEDOVATELSKY PROEKTONO - KONSTRUKTORSKY INSTITUT TEKHNOLOGII MASCHINOSTROENIA. 4 Sept., 1968, No. 41989/68. Heading B3B. [Also in Divisions F2 and G3] A programme-controlled device for moving a tool along a curved path incorporates a plurality of differential units selectively operated through clutches from a reader. As shown, a tool 11 is co-ordinately positioned by an actuating mechanism 6 driven through summing differential gear units 1 by a motor 5. The selection of differentials 2 in each summing unit is determined by a perforated programme tape 8 which is read by contact fingers to actuate solenoids 7 and selectively engage clutches I-V. The driving members 4 of all the clutches are rigidly connected to a motor 5 through a shaft 9 and the tape is driven synchronously through a clutch 14. The differentials are selected to have a ratio of twice that of the preceding differential and the final clutch V is connected to the differential through an idler gear so that the shaft 10 is rotated in the reverse direction. Clutch 14 is disengaged to allow the information in a line to be read a preset number of times for programmed rectilinear sections. The rate of travel of the tool can be additionally varied by adjusting the speed of the motor 5.
Patent GB-1251923-A (GB)
IPC: H03K5/00
Filed: 1970-05-07
Abstract: 1,251,923. Waveform generators. POLSKA AKADEMIA NAUK-INSTYTUT AUTOMATYKI. 7 May, 1970 [8 May, 1969], No. 22004/70. Heading H3P.  A waveform generator, more particularly for producing trapezium shaped waves with independently controllable slopes and upper and lower level dwells, comprises four triggers, two integrators and four threshold circuits arranged substantially as shown. In operation, when trigger P1W1 produces an output -U the slope generating integrator W1 produces an output which rises until it reaches the threshold of an upper level amplitude discriminator K1W1. This switches the output of trigger P1W1 to zero so that the upper level is held and also operates a trigger P1W2 which starts a dwell timing integrator W2. When the output of this reaches the threshold level of an amplitude discriminator K1W2 the latter switches to operate a trigger P2W1 which applies +U to the input of the slope generating integrator W1 the output of which accordingly runs down. This continues to the threshold of the lower level amplitude discriminator K2W which therefore switches P2W1 to produce zero input to the integrator so that the lower level is held. It also operates trigger P2W2 to restart the dwell time integrator W2 the output of which changes until it reaches the threshold of a discriminator K2W2 which thereupon retriggers P1W1 to restart the cycle.  Switches Z1 or Z2 may be thrown to interrupt the loop at the upper or lower level so that single slot operation may be initiated at inputs I or II.
Patent GB-1256792-A (GB)
IPC: F04B45/047
Filed: 1969-03-21
Abstract: 1,256,792. Reciprocating air pumps. E. KOLFERTZ. March 21, 1969 [May 28, 1968], No.15049/69. Heading F1N. In an air pump, to enable the individual replacement of the air pumping assembly 14 and the electric motor assembly 6 driving the pumping assembly 14 each assembly is mounted on a separate housing part 1, 2 secured together by a sliding connection to form with a further port 3 a housing enclosing both assemblies. The pump shown is intended for use in aerating water in aquariums. The housing parts 1 and 2 are connected by a tongue and groove 18, 20, these parts then being enclosed by the housing part 1. The pump assembly 14 includes a diaphragm 13 reciprocated by an armature 11. An A.C. energized coil of (he motor assembly 6 causes the armature to reciprocate.
Patent GB-1265920-A (GB)
IPC: F16L27/08
Filed: 1970-06-11
Abstract: 1,265,920. Rotary pipe joints. JOHNSON CORP. 11 June, 1970 [22 July, 1969], No. 28416/70. Heading F2G. A doll head is characterized by a wall 32 sealing off the rotary nipple 24 at the end opposite the rotary driving member 28, 20 as to form a chamber 54 between said wall and the housing, the chamber being vented, e.g. by passage 26,to a pressure less than that pertaining in the flow passage of the nipple 24. As described, the nipple 24 has relatively adjustable collars 34, 38 rotatable with it, the second collar 38 being axially slidable thereon and being held against relative rotation by keys 42 in keyways 40. A spring 50 urges the collars apart to seal with gaskets 48 within the housing, and fluid admitted via port 16 passes through ports 30 into the nipple 24. A sealing ring 46 prevents leakage of fluid between collar 38 and the nipple, but any leakage that does occur is vented from chamber 54 via pipe 52 without a build up of pressure.
Patent GB-1266636-A (GB)
IPC: C07C51/48
Filed: 1970-10-05
Abstract: 1,266,636. Liquid/liquid extraction. CHEMCELL Ltd. 5 Oct., 1970 [6 Oct., 1969], No. 47180/70. Heading B1F. In a counter current extraction process in which heavy solvent solution and light solvent are alternately supplied to column 10, gradual accumulation of heavy phase at the top of counter-current extraction column 10, and gradual accumulation of light phase at the bottom of column 10 is prevented by simultaneously with the passage of light phase from 16 through the column supplying an upward stream from 70 of solute impoverished heavy solvent substantially equal to the volume increase of the light solvent caused by extraction of solute, and during the supply of heavy solvent from 18, removing from the bottom at 24 heavy solvent equal in volume to the heavy solvent supplied.