baber/WOPTO huggingface dataset:
Patent FI-20070941-A (FI)
Inventor: ALAJAEAESKI TIMO
IPC: D21D5/02
Filed: 2007-12-05
Abstract: A fiber suspension, such as in a pulp mill, is treated in a manner which minimizes both the investment and the operating costs associated with a screening plant. A single pump (114) has an outlet connected to a knotter (112) and primary (120) and secondary (126) screening stages, so that the pump provides substantially the sole motive force to the pulp, moving it through the knotter and screening stages. The knotter and screening stages are provided in a common housing with the coarse screen vertically above the screening stages, and the screening stages one above the other. A single motor may be provided to rotate rotatable elements associated with the knotter and screening stages. The coarse screen may be connected to a knot washer (116) external of the housing by a valved conduit less than two meters in length, and the secondary screening stage can be connected to a tertiary screening stage (128) exterior of the housing by a valved conduit less than two meters long. Rejects from the knot washer and secondary screening stage may be recycled to the pulp inlet, and the dilution water may be introduced where necessary. <IMAGE>
Patent FR-1602043-A (FR)
Title: Covering a conveyor belt with a wear- - resistant layer
IPC: B65G15/34
Filed: 1968-12-09
Granted: 1970-09-28
Abstract: A polyurethane layer is applied to one side of the fabric but does not penetrate the latter completely. On the other side is deposited a second layer of another material (esp PVC) which binds when heated, to the material of the carcass. The layer is then welded to the carcase material.
Patent GB-1051529-A (GB)
IPC: C22B21/02
Abstract: 1,051,529. Producing aluminium. R.R. REYNOLDS. Aug.2, 1965 [July 31, 1964], No. 33010/65. Heading C7D. Aluminium is obtained from alumina containing ores (preferably bauxite) by heating them at a temperature over 2200‹C. (e.g. 2250‹-2500‹C. ) in the presence of a carbonaceous reducing agent (e.g. colse or charcoal) under a pressure sufficient to prevent the escape of aluminium vapour and to let carbon monoxide escape (e.g. 0À5 to 15 atmospheres gauge). Carbon or carbon monoxide must not be allowed to come into contact with molten aluminium which is at a temperature of less than 2200‹C. and this may be accomplished by allowing the carbon monoxide to escape and not tapping the molten product until it has all escaped.
Patent GB-1052236-A (GB)
IPC: H01J31/26
Abstract: 1,052,236. Television pick-up tube; photoconductive arrangements. ELECTRIC & MUSICAL INDUSTRIES Ltd. Aug. 12, 1963 [Aug. 11, 1962], No. 30876/62. Headings H1D and H1K. A light-scanned television pick-up tube includes a mosaic of photo-emissive elements which is charged by the action of light on a photo-sensitive electrode, and an interferencetype optical filter disposed between the mosaic and the electrode, for screening the latter from the light beam employed for scanning the mosaic. Electrons emitted from the photoemissive cathode 2 by the optical image of a scene focused thereon by lens 8 are focused by electrodes 12 to 15 and solenoid 11 upon the layer 9 of semi-conductive glass which supports the photo-emissive mosaic 3 and an interference filter 10 having a stop band corresponding to the blue or ultra-violet light generated by the screen of the flying spot cathode ray scanning tube 7. Electrons emitted from the mosaic are accelerated through the mesh electrode 4 on to an aluminium backed fluorescent screen 20, the photo-multiplier 18 receiving the light output therefrom to provide an output signal at 17. In an alternative arrangement (Fig. 2, not shown) the photo-sensitive electrode is a photoconductive layer 1 which is deposited upon a transparent conductive layer 2 and which itself carries the interference filter 10, the layer 9 of semi-conductive glass, and the photo-emissive mosaic 3; electrode 4 is maintained positive with respect to the transparent conductive layer. In this arrangement, the glass layer 9 may be dispensed with; the composite photo-sensitive structure may be deposited upon the end wall of the tube envelope; and the photo-emitted electrons may be directed into an electron multiplier mounted within the same envelope. The filter 10 may be of either metal or insulator, and may alternatively be deposited upon the mosaic side of layer 9.
Patent GB-1084280-A (GB)
IPC: G01C19/30
Abstract: 1,084,280. Gyroscopic apparatus. NORTH AMERICAN AVIATION Inc. Dec. 13, 1965, No.52871/65. Heading G1C. A gyroscope comprises a rotor 11 mounted on a spherical air bearing 12 and provided with an electrically conductive eddy current shell 18, a first pair of torquer windings 21, 22 being positioned on opposite sides of the shell along an axis normal to the rotor spin axis, a second pair of torquer windings (not shown) being also positioned on opposite sides of the shell along an axis which is at normal to both the rotor spin axis and the axis of the windings 21, 22, and compensating windings (not shown) being provided adjacent the first and second pairs of torquer windings to compensate the torques generated in these windings. The rotor is spun by an eddy current motor comprising a stator 40 and conductive shell 35. The shell 18 rotates between polepieces on which the torquer windings are carried and an inner pole member 33. Three pairs of compensating windings may be provided for each pair of torquer windings to allow for manufacturing and assembly alignment errors causing misalignment of the torquering axis and the axis of freedom of the gyroscope, non-linearity of torque produced by the windings related to current supplied to the windings, and differences in the torque produced depending on the direction of current flow in the coils. The compensating windings are all connected in series with the main torquer windings through potentiometers which enable the current flowing through them to be adjusted to the desired proportion of the current in the main windings. A circuit arrangement is described in the Specification. Correction for misalignment of the torque axis of the eddy current spin motor is also described in which a variable load is connected across compensating windings in the stator 40.
Patent GB-1143580-A (GB)
IPC: B66F9/18
Abstract: 1,143,580. Industrial lift trucks. EATON YALE & TOWNE Inc. 17 Aug., 1966 [22 Sept., 1965], No. 36780/66. Heading B8H. In an industrial lift truck, Fig. 1, opening and closing of gripper arms 14, transverse sliding movement of the arms and the reach mechanism are all controlled by movement of a single lever 10. These movements are respectively effected by rams 14b, 15b, 13b. The reach mechanism 13, Fig. 6, is extended and retracted by forward and rearward movement of the lever 10 as shown by arrows 40, 41 respectively. This movement pivots a block 20 about an axis 22 and opens a valve 34 to supply fluid through either a line 35 or a line 36 to an electromagnetic valve 32. The latter directs the fluid to rams 13b to operate the reach mechanism. The hydraulic lines and the valve 32 may be as described in Specification 798,133. To operate the grippers 14 the lever 10 is rotated in the direction of arrow 42 to set the valve 32 to supply fluid to the ram 14b. This is effected as a result of electrical contact between an arm 28 and a contact 30. Movement of the lever 10 either forwards or backwards will now operate the valve 34 to supply fluid through the valve 32 to the ram 14b. Similarly, the transverse traverse movement is effected by rotating the lever 10 in the direction of arrow 43 and then moving it in the direction of either arrow 40 or arrow 41.
Patent GB-1226061-A (GB)
IPC: C08K3/00
Filed: 1969-03-08
Abstract: 1,226,061. Laminated building components; moulding plastics material. FYPOL Ltd. 8 March, 1969, No. 12373/69. Headings B5A and B5N. [Also in Division C3] Polyester resin building and like components are made by placing in a mould polyester resin mix which has incorporated therein a filler material having a fineness of up to and including 90 mesh, the viscosity of the mix and the coarseness of the filler material being such that the filler material settles in the mix to give a layer of resin substantially free of filler material overlying a heavily filled resin layer and applying a permeable reinforcement, e.g. a glass fibre mat, to the resin layer which wets out and permeates the reinforcement so that when the resin is subsequently cured the reinforcement is united with the heavily filled resin layer. Successive layers of resin mix and reinforcement may be applied. The resin is preferably mixed in the unfilled state with a monomer, e.g. styrene, to lower its viscosity and then an accelerator, e.g. dimethyl aniline, added to increase the hardening rate, then the filler, e.g. white silica sand, " Molochite " (Registered Trade Mark) or an alumina silicate added and finally a catalyst, e.g. methyl ethyl ketone peroxide, added. The polymer mix may also contain a fire retardent. A layer of insulating material, e.g. rigid polyurethane foam sheet, preferably of area slightly less than the area being moulded, may be applied after the reinforcement has been applied, the resin permeating through the reinforcement serving also to secure the insulating material. A decorative or other finishing material, e.g. pebble dash or clay brick slivers, may be applied on the final surface of the moulding, the weight of the finishing material pressing on the reinforcement encouraging the permeating of the resin through the reinforcement to key the finishing material to the rest of the moulding.
Patent GB-1227385-A (GB)
IPC: A44B11/04
Filed: 1968-05-30
Abstract: 1,227,385. Buckles. K. TERADA. 30 May, 1968, No. 25884/68. Heading E2A.  A fastener for a belt comprises a flat plate having at least one belt-fixing slit 4 or 4b and a plurality of wedge-shaped guide slits 2, 2b therein, each of the guide slits being inclined in the same general direction as the or each other guide slit with respect to the or each belt fixing slit. The guide slits 2, 2b may be closed at their outer ends, Fig. 5 (not shown).
Patent GB-1230470-A (GB)
IPC: G03C8/24
Filed: 1968-11-28
Abstract: 1,230,470. Hexahydro - 2H - azepine - 2 - thione. EASTMAN KODAK CO. 28 Nov., 1968, No. 56527/68. Heading C2C. [Also in Division G2] Hexahydro - 2H - azepine - 2 - thione is obtained from the reaction between the corresponding ketone and P 2 S 5  in the presence of xylene.
Patent GB-1237899-A (GB)
IPC: C11D3/48
Filed: 1968-10-15
Abstract: 1,237,899. Detergent composition containing enzymes. UNILEVER Ltd. 15 Oct., 1968 [16 Oct., 1967], No. 48729/68. Heading C5D. A particulate detergent composition comprises particles of surface-active material and discrete, shaped inorganic solids containing enzymes. The enzymes may be amylolytic, proteolytic or lipolytic enzymes. Suitable inorganic materials are readily water-soluble or -dispersible inorganic salts such as sodium sulphate, sodium carbonate, sodium bicarbonate, sodium dihydrogen orthophosphate and acid sodium pyrophosphate, borates, boric acid, ammonium salts and sodium triphosphate. The discrete shaped solids may also contain other ingredients such as stabilizers or activators for the enzymes, colouring agents or fluorescing agents. The forms of the discrete shaped solids include ribbons, flakes, threads, spheres, noodles, small tablets, pellets and granules. In general the maximum dimension of the discrete shaped solid should not be more than 15 mm., and the minimum dimension should not be more than 2À5 mm., whilst they should preferably weigh between 0À05 and 100 mg. The discrete shaped inorganic solids may be coated with a watersoluble or water-dispersible coating material, e.g. shellac. The surface-active material may be an anionic, a non-ionic, a cationic, an amphoteric detergent or soap which may be admixed with conventional builders such as alkali metal phosphates and alkali metal salt of ethylene diamine tetraacetic acid and bleaching agents such as sodium perborate.
Patent GB-1238087-A (GB)
IPC: F25J1/02
Filed: 1969-07-15
Abstract: 1,238,087. Refrigerating., LINDE A.G. 15 July, 1969 [16 July, 1968], No. 35457/69. Heading F4H. In a refrigerating system e.g. for the liquefaction of natural gas, the gas is supplied through a line 1 for gradual cooling in heat exchangers 2 ... 5 for eventual storage in a tank 9 and the heat exchangers are cooled by a refrigerant comprising a gas mixture formed from components having different boiling points e.g. natural gas or gaseous hydrocarbons and nitrogen. The gaseous refrigerant mixture is fractionally condensed at elevated pressure serially in the heat exchangers. At least one fraction so obtained is separated out in separators 14, 16, 19, is expanded to a predetermined pressure in ejectors 15, 17, 20 in which at the same time vapour resulting from expansion and vaporization of at least one fraction having a lower boiling point is compressed and intimately mixed with the expanded liquid.
Patent GB-1239242-A (GB)
IPC: B04C5/28
Filed: 1968-09-16
Abstract: 1,239,242. Centrifugal separators. UNIVERSAL OIL PRODUCTS CO. 16 Sept., 1968, No. 43929/68. Heading B2P. In a multi-cell centrifugal separator for separating solid or liquid particles from natural gas and comprising a container 10, Fig. 1, within which centrifugal separator tubes 39 are mounted between lower and upper tube plates 21, 22 which define, between themselves, an entrance passageway 24 in communication with a particle-laden gas inlet 13 and, with the container, an exit chamber 25 in communication with a clean gas outlet 14 and a separated particle-collecting space 26- 28, the latter space is divided by partitions into two or more chambers 26, 27, 28 provided with outlets 34-36 for the separated particles. The tube plates extend between vertical plates 15, 19 which are sealed to the wall of the container and are provided with openings for the entrance and exit of the gas respectively. The partitions forming the particle-collecting chambers may be wholly vertical, or, as shown, may have vertical portions 29, 30, and inclined portions 31-33 so as to provide funnel-shaped chambers. Imperforate plates 37, 38 are provided for guiding the incoming and outgoing gas respectively. The tube plate 22 is inclined and may be straight or curved to form one-half of a conical frustum. Alternatively the tube plate 22 may be of stepped form at the inlet end, Fig. 3. As shown in Fig. 2, the container between the plates 15 and 19 is divided into two sub-compartments by a longitudinally extending, vertical partition wall 43. When the apparatus is operating above one-half, or at full capacity, the gas passes equally in the two contiguous sub-compartments of the passageway 24. When the gas supply drops below one-half capacity one of the sub-compartments of the passageway 24 is closed by a secotrshaped plate 44 which is pivoted at 45 and swung in its closed position by the piston rod 47 of a fluid operated piston and cylinder device 46.
Patent GB-1239333-A (GB)
IPC: H01C10/10
Filed: 1969-08-01
Abstract: 1,239,333. Piezoresistive devices. SIEMENS A.G. 1 Aug., 1969 [2 Aug., 1968], No. 38592/69. Heading H1K. A piezoresistive device has a body consisting of an oxide of vanadium which may be substitutionally doped by one or more elements of Groups IV A , V A  and VI A  of the Periodic Table. A suggested material is vanadium dioxide with up to 5% tungsten substitution. In an example, a pure vanadium dioxide monocrystal is cemented to a substrate to form a strain gauge and strain is applied along the tetragonalc-axis. In this material the piezoresistive effect is substantially independent of temperature in the range 20‹-64‹ C. but increases considerably above a transition temperature of 67‹ C. because of loss of the superlattice. A needle-like monocrystal may be used in a piezoresistive microphone and may consist of pure vanadium dioxide or of vanadium dioxide so doped that the lattice transition point is below the normal operating temperature of the microphone.
Patent GB-1257009-A (GB)
IPC: G11C8/16
Filed: 1970-05-26
Abstract: 1,257,009. Transistor bi-stable circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 26 May, 1970 [29 May, 1969], No. 25210/70. Heading H3T. [Also in Division G4] Cross-coupled bi-stable transistors T1, T2 with respective parallel connected pull-down transistors T3, T4 all have their emitters connected to point P whose potential is changed, as by one of a matrix of transistor switches Ta, from one level at which the bi-stable stores at low power dissipation to a second (lower) level at which higher power dissipation occurs and the state of the cell responds to inputs at S1, S2. Readout occurs also in the higher dissipation condition on line L1 or L2 according to which of points A, B is lower in potential; alternatively, readout may be the presence or absence of a lower potential on one only of lines L1, L2, the other line being dispensed with and its collector B (or A) being earthed through a diode, in place of the multiemitter transistor T5 or T6, to maintain the correct voltage levels. The multiemitter transistors T5, T6 enable several bistables to feed one line in OR fashion. To write, a positive potential on S1 or S2 turns on the appropriate one of T3, T4; alternatively S1, S2 may be dispensed with and the write pulse applied through the read line L2 and a Zener diode D, or through the read line L1 and a second emitter e2h on T3 which with the base of T3 forms a Zener diode. Instead of the second emitters e 12  and e 22  which carry the low dissipation state current of T1, T2, a resistor R3 may be connected between the other emitters e 11  and e 21  and earth to carry this current.
Patent GB-1257421-A (GB)
IPC: G21C1/07
Filed: 1970-04-09
Abstract: 1,257,421. Reactors. ATOMIC ENERGY OF CANADA Ltd. 9 April, 1970 [21 April, 1969], No. 16819/70. Heading G6C. In a nuclear reactor having spheroidal fuel, steam is generated from the light water coolant and reactivity control is effected by adjustment of the level of a heavy water moderatorreflector surrounding the core. Coolant enters the core shell, 12, at the inlet 42 and steam emerges at the outlet 45. Fresh fuel spheres are admitted at 46 and spent fuel removed through the tube 14. The graphite liner, 34, functions as a thermal insulation for the shell, 12. The heavy water moderator reflector, 16, is supported in the annular space between shells 10 and 12 by helium gas pressure in the free surface, 17. In an emergency, the helium pressure in space 21 is reduced to allow the moderator to be dumped. The fuel spheres are of uranium impregnated graphite coated with ceramic.
Patent GB-1257515-A (GB)
IPC: G06K15/00
Filed: 1969-09-29
Abstract: 1,257,515. Controlling Clutches. ING. C. OLIVETTI & C. S.p.A. 29 Sept., 1969 [26 Oct.' 1968], No. 47839/69. Heading F2L. [Also in Division B6] A clutch for effecting a typing action comprises a lever 58, Fig. 1, which releases a dog 64 to engage a toothed wheel 69. This connects a driving shaft 70 to a group of cams 43, 71 and 94 for a one-third revolution. A second clutch, Fig. 2, comprises an operating bail 191 which when moved clockwise releases a lug 203 on a ring 204 which moves by a spring 211 so that a dog 209 engages a toothed gear 210 to connect the driving shaft to a cam 205. The ring 204 is supported by two links 208 in addition to the dog 209.
Patent GB-1257659-A (GB)
IPC: H01L23/485
Filed: 1969-05-05
Abstract: 1,257,659. Integrated circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 5 May, 1969 [8 May, 1968], No. 22808/69. Heading H1K. An integrated circuit comprises two semiconductor bodies, one containing a circuit element and the other a complementary element, and each having at one face a surface insulating layer and a pattern of conductive connections thereon contacting the circuit elements via apertures therein. The bodies are united face to face so that the conductive patterns are electrically connected. In the arrangement shown prior to assembly in Fig. 1 wafers 1, 21 of 1-10 ohm cm. P and N type silicon respectively contain complementary IGFETS as shown and mating L-shaped diffused diode region 14 and metal strip 40 respectively. In assembly body 21 is inverted over the other with contact pads 9-12 and 17 left exposed, correct location being established by reverse biasing the diode region 14 relative to body 1 and connecting an HF supply between body 21 (and thus strip 40) and earthed body 1. The alternating current across the junction is monitored and a maximum value is indicative of correct alignment. Alternatively one wafer is formed with a diffused photodiode and the other with a mating lacquer dot loaded with luminescent powder. After illumination of the latter assembly is effected. In this case maximum photodiode current indicates proper alignment. Bonding is effected by soft-soldering or ultrasonic welding. Alternative embodiments incorporate annular channel IGFETs or bipolar transistors, sometimes with several circuit elements in each body, and the bodies may be assembled so as to leave contact pads exposed on both. Also the complementary devices may be formed in epitaxial layers of opposed types on wafers of any type.
Patent GB-1266723-A (GB)
IPC: C07B57/00
Filed: 1969-07-25
Abstract: 1,266,723. Resolution of racemates. AMERICAN CYANAMID CO. 25 July, 1969 [20 Aug., 1968; 20 May, 1969], No. 37487/69. Headings C2C and C2U. The resolution of a racemic alcohol is effected by (i) reacting it with an optically inactive amine-sulphur trioxide complex to form a racemic hemisulphate amine salt, (ii) treating the latter with an excess of an optically active primary amine to form a mixture of diastereomeric hemisulphate salts with said optically active amine, (iii) separating these salts by fractional crystallization and (iv) hydrolysing the separated salts to respective d and l alcohols. Specified racemic alcohols are dl-3-methoxy- 13# - ethyl - gona - 1,3,5(10) - trien - 17# - ol, dl - 3 - methoxy - 13# - ethylgona - 1,3,5(10),8- tetraen-17#-ol, dl-chloramphenicol and dl-pantothenic acid. Specified optically inactive amines are triethylamine and pyridine. Specified optically active primary amines are d- and l-2- aminobutanol, α-phenylethylamine and menthylamine. The resolution of a racemic ketone is effected by (i) reacting it with an optically active primary amine, preferably with acid catalysis, to form a mixture of diasteromeric imines which is then optionally salified (e.g. with HCl), (ii) separating the mixture of imines or imine salts by fractional crystallization, and (iii) hydrolysing the separated products to the respective d and l ketones. Specified racemic ketones are dlestrone, dl-androstenolone, dl-pregnenolone, dl- 3 - methoxy - 13# - ethylgona - 1,3,5(10) - trien- 17 - one and dl - 3 - methoxy - 13# - ethylgona- 1,3,5(10),8-tetraen-17-one. Specified optically active primary amines are d- and 1-2-aminobutanol, α-phenylethylamine and menthylamine. Compounds claimed per se are (i) d-3-methoxy - 17# - sulphoxy - 13# - ethylgona - 1,3,5- (10) - triene l - 2 - aminobutanol salt; and (ii) d- and l-3-methoxy-17-(l-1-ethyl-2-hydroxy. ethylimino) - 13# - ethylgona - 1,3,5(10) - triene and the hydrochlorides thereof.