baber/WOPTO huggingface dataset:
Patent GB-1444237-A (GB)
Title: Field effect transistor circuit
IPC: H01L27/06
Filed: 1973-12-05
Abstract: 1444237 Logic circuits INTERNATIONAL BUSINESS MACHINES CORP 5 Dec 1973 [29 Dec 1972] 56260/73 Heading H3T An integrated logic circuit comprises a first FET 4 having its gate, drain electrodes connected to the same or different voltage sources a second FET 6 having its drain connected to the same voltage source as the drain of 4 and its gate connected to the source electrodes of the FET 4 and a third FET 8 to define a first node A, the third FET 8 having its drain and gate electrodes connected to the source of FET 6 to define a second node B, a plurality of input devices 2a ... 2n connected to the first node A and a plurality of output circuits N connected to node B each including an input FET 12 wherein the threshold voltage of the FET 8 is less than that of input FET's 12. The transition times of the output at A is isolated from the loading effect of succeeding logic stages by diode connected FET 8. In operation, in the quiescent state, with all inputs to gates of NOR circuit FET'S 2a...2n at a "0" level, an interelectrode capacitance 10 is charged via FET's 4, 6 having a lower conductance and a lower threshold voltage than FET's 2a ... 2n to turn on an input FET 12 of a following stage. When at least one of the input FET's 2a ... 2n is rendered conducting, the voltage at node A drops as to turn off FET's 6, 12 and the capacitance to discharges via diode FET 8 and the conducting one of FET's 2a...2n. The FET 6 is arranged to have a relatively large width to length ratio for its gate so that the source electrode of 6 follows the rising voltage at node A. The fall time may be optimized by making the conductance of diode 8 arbitrarily large and by controlling the conductances of the FET's 2a ... 2n. The NOR arrangement 2a ... 2n may be replaced by a series and/or parallel FET network.
Patent GB-1342143-A (GB)
Title: Controlled vapour bleed in oxidation of olefins
IPC: C07C409/04
Filed: 1971-12-09
Abstract: 1342143 Hydroperoxides; alkane sulphonic acids MARATHON OIL CO 9 Dec 1971 [10 Feb 1971] 57341/71 Heading C2C  Hydroperoxides are obtained by oxidizing unsaturated hydrocarbons in the liquid phase by contacting them with gaseous molecular oxygen, by-product oxidation compounds,which are more volatile than the hydroperoxides, being continuously or intermittently removed from the vapour space above the liquid phase. The hydroperoxides produced may be used to enhance the reactivity of olefins with alkalimetal bisulphites in the production of alkane sulphonatic acids.
Patent GB-1254117-A (GB)
Title: Vibration damping laminated systems
IPC: C08F255/02
Filed: 1968-12-03
Abstract: 1,254,117. Vibration damping laminates. FARBWERKE HOECHST A.G. 3 Dec., 1968 [5 Dec., 1967], No. 57351/68. Heading B5N. [Also in Divisions B2 and C3] A vibration damping laminated system comprises two plates bonded together by an interlayer comprising a graft polymer of from 35 to 65% by weight, based on the weight of the graft polymer, of styrene or a mixture of styrene and from 0À1 to 10% by weight, based on the weight of styrene, of a copolymerizable carboxylic acid, or from 65 to 35% by weight, based on the weight of the graft polymer, of a copolymer containing from 10 to 30 parts by weight of units derived from vinyl acetate and from 70 to 90 parts by weight of units derived from ethylene, the total number of parts by weight of the various units in the copolymer being 100. The copolymerizable carboxylic acid may be acrylic, methacrylic or a mixture thereof and the plates may be of steel. The graft polymer may be applied to the plates by travelling, brushing or pouring at elevated temperature and the system is cooled under pressure between rollers, or a gel of the copolymer in styrene or the styrene/carboxylic acid mixture containing a polymerization initiator is applied between the plates and the resulting system is heated to form the graft polymer in situ.
Patent GB-1131390-A (GB)
Title: Vinyl or vinylidene resin compositions
IPC: C08L57/00
Filed: 1967-12-18
Abstract: 1,131,390. Polymer compositions. SOLVAY ET CIE. 18 Dec., 1967 [3 Jan., 1967], No. 57366/67. Heading C3P. A composition comprising 99-50% by wt. of a vinyl or vinylidene resin and 1-50% of an elastomer, in the form of a dry, non-sticky powder easily converted into a homogeneous, gelled mass, is obtained by adding a latex of the elastomer, which may optionally contain a latex of a vinyl resin, to an aqueous suspension of a vinyl resin obtained by polymerization in aqueous suspension, or a modified such resin and coagulating the latex while agitating then adding a latex of a rigid vinyl polymer to the suspension and coagulating, separating the aqueous phase and washing and drying the solid. The vinyl resin in suspension may be a homo- or co-polymer of vinyl chloride, chlorinated PVC, polystyrene or polymethylmethacrylate. The elastomer may be ethylenevinyl acetate copolymer, butadiene-methyl methacrylate copolymer, butadiene-styrene copolymer or polychloroprene. The vinyl resin added in latex form may be PVC, polystyrene, or polymethylmethacrylate and is used in an amount of 0À5-25% by wt. of the polymer mixture obtained in the first stage. The coagulant used may be aluminium sulphate or calcium chloride. Agitation is preferably continued uninterrupted while the second latex is added and further coagulant is unnecessary.
Patent GB-1206298-A (GB)
Title: Improvements in or relating to hydraulic operating apparatus
Inventor: LAKE ANTHONY ALAN
IPC: H01H33/34
Filed: 1967-12-04
Abstract: 1,206,298. Valves. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 4 Dec., 1968 [4 Dec., 1967], No. 57631/68. Divided out of 1,206,297. Heading F2V. [Also in Divisions F1 and H1] An hydraulic apparatus, e.g. for operating an electric switch as described in Specification 1,206,297 (see Division H1), consists of a valve 80, arranged to connect an output line 70 to either a high pressure source 78 or a low pressure source 71, and an actuating linkage normally holding the valve 80, against a spring force 82 in a first position in which the valve connects line 70 to the low pressure source 71, the linkage being retained by a latch 107 which is releasable to allow the linkage to move to a second position in which the valve connects the line 70 to the high pressure source 78; movement of the linkage to the second position automatically releases a second latch 100 allowing a spring 101 to move the linkage into a third position in which the first latch 107 is reset and from which the linkage can be returned to its first position by an hydraulic actuator 116. In a modification (see Division F1) the linkage operates two valves (120, 141) (Fig. 5, not shown) to apply two stages of pressure to the output line 70.
Patent GB-1249048-A (GB)
Title: Device for fixing containers and interchangeable superstructures in place on vehicles
IPC: B60P7/13
Filed: 1969-11-25
Abstract: 1,249,048. Stud-and-socket fasteners. ACKERMANN FAHRZEUGBAU. 25 Nov., 1969 [18 Dec., 1968], No. 57668/69. Heading E2B. A twist-lock fastener for fixing interchangeable superstructures and standard containers to vehicles having a locking bolt 14 which engages in a recess in and is tightenable against the corner fitting of the superstructure or container and which can be engaged at three heights relative to the retainer base 4 which is fixed to the vehicle, the lowest being fully retracted. To use in the fully raised position, shown in Fig. 4, the peripheral groove 8 of the bolt holder 6 is slid on to grooves 5 in the retainer base 4 and the locking bolt 14 is engaged through .the recess in the corner of the container, the container resting on the load bearing flange 11. The hand wheel 13 is rotated to raise the locking bolt 14 above the bolt head guides 15. The bolt 14 is rotated through 90‹ using the four sided bolt shaft 14a and the bolt is dropped to rest on to the upper surface of the corner fitting of the container. The hand wheel 13 is screwed tight to hold the superstructure or container in place and the pivoted strap 9 is swung across and secured, the vertical rib 16 attached thereto engaging the castellated hand wheel 13, thus preventing accidental release of the container. To use in the intermediate position shown in Fig. 3 the load bearing flange 11 rests against the underside of the guide edges 5 and the superstructure or container rests on the upper sides of the guide edges 5 the locking bolt being tightened on to the corner fitting of the superstructure or container as previously described.
Patent GB-1248067-A (GB)
Title: Preparation of anhydrous hydrofluoric acid
IPC: C01F7/788
Filed: 1968-12-05
Abstract: 1,248,067. Anhydrous hydrofluoric acid. UGINE KUHLMANN. 5 Dec., 1968 [6 Dec., 1967], No. 57868/68. Heading C1A. A process for the preparation of anhydrous hydrofluoric acid from a fluorosilicic acid solution, comprises (a) neutralizing the acid with NH 3  and removing the precipitated SiO 2  aq., (b) extracting the NH 4 F remaining in solution in the form of a double fluoride, of ammonium and a metal, by the action of a metal fluoride, (c) separating and squeezing the ppt., (d) heating the ammonium fluoride originating from step (f) to form NH 3  which is recycled and NH 4 HF 2 , (e) reacting this NH 4 HF 2  with more metal fluoride and collecting the anhydrous HF produced, and (f) thermally decomposing the resultant double fluoride along with that produced in step (b) to regenerate metal fluoride and NH 4 F, both of which are recycled. The precipitated double fluoride is mixed in a wet state with the dry NH 4 F, is dried during the heating of step (d), and remains in the reactor as ballast until its thermal decomposition at step (f). The fluorides of the following metals may be used: Al, Zr, Fe, In, Cr, V, Ni, Tn, and Ti. Alternatively where 2 double fluoride stoichiometries are known that with the metal in its lower oxidation state may be used in place of the metal fluoride, for example: NH 4 AlF 4 , NH 4 ZrF 5 , NH 4 FeF 4 , NH 4 InF 4 , NH 4 CrF , , NH 4 VF 4 .
Patent GB-1452146-A (GB)
Title: Method and apparatus for dissolution of a polymer in a solvent lithium-iodine cells
IPC: B01F33/40
Filed: 1973-12-14
Abstract: 1452146 Dissolving apparatus SHELL INTERNATIONALE RESEARCH MAATSCHAPPU BV 14 Dec 1973 58069/73 Heading B1C [Also in Division C3] Apparatus for dissolving polymer particles in a solvent comprises a vessel 30 having a liquid space 43 in the lower part and a vapour space 45 in the upper part, means 38 dividing the liquid space into at least two substantially vertical compartments in liquid communication above and below the dividing means, baffling means 40, 41 located where the compartments are in liquid communication arranged to deflect polymer particles out of corners, and gas dispersing means 37 for dispersing a stream of gas into the lower part of at least one but not all of the compartments. Solvent may be introduced through line 34 and solution removed through line 31. The dividing means may comprise a single draught tube 38 or a plurality of concentric or of separate, non-concentric draught tubes. Gas withdrawn from the vapour space may be recycled by line 36 and pump or compressor 35 to gas disperser 37 which may be constituted by individual ports or by a porous septum.
Patent GB-1381366-A (GB)
Title: Step variable displacement hydraulic motor
IPC: F03C1/40
Filed: 1972-12-15
Abstract: 1381366 Hydraulic reciprocating motors DEERE & CO 15 Dec 1972 [17 Dec 1971] 58074/72 Heading F1A In a variable-speed hydraulic motor comprising a rotary cylinder block 34 with spring-loaded, radial pistons 38 engaging a multi-lobed cam track 22 through rollers 40, the cylinder ports 48 communicate sequentially with valve face passages 61 connected to at least four passages 51 to 54 which are selectively connectable by valves to pressure supply or return, such that the motor can be operated in forward or reverse rotation at different speeds. The different speeds are obtained by connecting selected passages 51 to 54 to return so that associated groups of pistons idle. The cam lobes may be in groups of sequentially increasing height to provide different displacements, e.g. heights in the ratio 1:2 to give three speeds, Figs.5 and 6 (not shown), and 1:2:4 to give seven speeds, pilot-operated slide valves being provided to connect the appropriate groups of cylinders to supply and return, Figs.4, 6 and 8 (not shown). Balancing pistons 65 in alternate passages 61 bear against a thrust bearing 66.
Patent GB-1419586-A (GB)
Title: Device for supporting a spindle of an open-end spinning apparatus
IPC: D01H4/08
Filed: 1973-12-17
Abstract: 1419586 Mounting open end spinning rotors TOYODA JIDOSHOKKI SEISAKUSHO KK and DAIWA BOSEKI KK 17 Dec 1973 [29 June 1973] 58276/73 Heading DID The bearing 4 of an open end rotor spindle 7 is supported in a cylindrical bush 1, mounted on the machine frame, by a resilient ring 5 and axially spaced therefrom an additional ring 6 is provided. This ring 6 may be resilient or, if spaced from the bearing, Fig. 6, may be metallic. In order to allow a cooling air flow air passages 15 may be provided in the surface of the bearing 4. Alternatively air passages may be provided in the ring members.
Patent GB-1415450-A (GB)
Title: Method of selective stripping of plutonium from an organic solvent containing plutonium
IPC: G21C19/46
Filed: 1973-12-17
Abstract: 1415450 Recovery of plutonium COMMISSARIAT A L'ENERGIE ATOMIQUE 17 Dec 1973 [28 Dec 1972] 58389/73 Heading G6R Plutonium is stripped from an organic solvent by contacting the solvent in countercurrent with a solution containing an aromatic organic reducing agent which is a substituted hydrazine, a polyamine, or an aminophenol, together with an agent for the removal of nitrites, for example hydrazine, phenylhydrazine, or sulphamic acid. Phenylhydrazine may act both as the reducing agent and the agent for removing nitrites. The reducing agent reduces plutonium from the Pu (IV) to the Pu (III) state. The process may be used for the separation of plutonium and uranium; after removal of plutonium, uranium may be separated, and the solvent then regenerated by countercurrent contact with an alkaline solution. In Examples 1-5, plutonium is stripped from a solution of tributyl phosphate in dodecane by means of nitric acid solutions of phenylhydrazine and hydrazine, phenylhydrazine alone, paraphenylene diamine and hydrazine, para-aminophenol and hydrazine, and diamino-2,4-phenol and hydrazine. In Example 6, plutonium is stripped from trilaurylamine in dodecane using a nitric acid solution of phenylhydrazine and hydrazine.
Patent GB-1308930-A (GB)
Title: Capacitor discharge ignition systems
IPC: F02P3/08
Filed: 1970-12-10
Abstract: 1308930 Ignition systems MOTOROLA INC 10 Dec 1970 [29 Dec 1969] 58583/70 Heading F1B A capacitor discharge ignition system comprises a storage capacitor 12,an energy supply circuit 14a, 16, coupled to the storage capacitor for delivering thereto a high voltage electrical energy pulse substantially immediately after a previous energy pulse has been discharged therefrom and applied to a primary winding 18a of an ignition coil 18, an electronic switch 20 connected to the storage capacitor and arranged for connection to the primary winding 18a of the ignition coil, an external pulse circuit component 22 coupled to the electronic switch to render the same conductive in response to a pulse applied thereto substantially instantaneously to discharge the storage capacitor 12 into the primary winding 18a of the ignition coil within a relatively short predetermined time interval to initiate a spark between the electrode 26 connected to the secondary winding 8b and a silicon controlled rectifier circuit 40 connected in circuit with the electronic switch and arranged for connection to the primary winding of the ignition coil, the silicon controlled rectifier being substantially immediately responsive to the discharge of the storage capacitor to extend the duration of current flow through the primary winding of the ignition coil beyond that of the relatively short predetermined time interval to increase the duration of the spark discharge produced between the electrodes connected to the secondary winding. The system may be controlled by a mechanical breaker point assembly or by an electromagnetic device or by electrical impulses developed by a light emitting source.
Patent GB-1450440-A (GB)
Title: Vacuum bag packages for meat
IPC: A23L3/3427
Filed: 1973-12-20
Abstract: 1450440 Absorbent inserts for meal packages RMARX 20 Dec 1973 [28 Dec 1972] 59284/73 Heading B8C [Also in Division A2] A vacuum bag package of meat has an absorbent insert comprising a liquid permeable cushion having a filling of inorganic material which is substantially inert to meat juice and is in a fine grained absorbent form. The filling may comprise silica gel mixed with gum tragacanth, a chalk material, and/or a clay mineral capable of expanding. Manganous chloride or potassium chlorate may be added as preserving agents and citric acid to stabilize the hydrogen ion concentration. The cushion may be of crepe paper sheets stuck together along spaced lines to form individual sections.
Patent GB-1282066-A (GB)
Title: Retaining cages for rolling elements in bearings
IPC: F16C19/46
Filed: 1970-12-14
Abstract: 1282066 Bearings RIV-SKF OFFICINE DI VILLAR PEROSA SpA 14 Dec 1970 [10 Feb 1970 22 May 1970] 59318/70 Heading F2A A one-piece sheet-metal window cage for a radial (Figs. 1, 2) or thrust (Fig. 20) rolling bearing comprises pairs 8, 37, 40 of upstanding transverse wings at opposite ends of the crossbars 5, 33 which wings retain the rolling elements in the windows by spring action. The wings may extend radially outwardly or inwardly. In alternative embodiments, the wings are formed by shaping the end flanges 4 such that they are either angled axially inwards (Fig. 26, not shown) or folded over and bent out at right angles (Figs. 7, 10, not shown) or turned over with the edges contacting the surface of the cross-bar (Figs. 13, 16, 24, not shown).
Patent GB-1240843-A (GB)
Title: Production of olefin oxides and isobutyric acid
IPC: C07C51/235
Filed: 1968-12-13
Abstract: 1,240,843. Production of olefin oxides and isobutyric acid. BADISCHE ANILIN- & SODA-FABRIK A.G. 13 Dec., 1968 [14 Dec., 1967], No. 59322/68. Heading C2C. A process for the production of olefin oxides and isobutyric acid comprises reacting an olefinically unsaturated compound having at least three carbon atoms in the carbon chain jointly with isobutyraldehyde in the liquid phase with molecular oxygen at a temperature of from -10‹ to + 45‹ C., the molar ratio of isobutyraldehyde to the olefinically unsaturated compound being in the range 1:1 to 1:100, and if desired, under superatmospheric pressure. The reaction may be carried out in the presence of an inert solvent and/or catalyst, e.g. an oilsoluble salt of a fatty or naphthenic acid of a metal of subgroups 5 to 8 of the Periodic System. The production of propylene oxide, isobutene oxide and glycide each jointly with isobutyric acid is exemplified. Starting materials mentioned include cyclohexene, cyclooctene, butadiene, cyclooctadiene-(1,5), cyclododecatriene - (1,5,9), decene-(l), allyl chloride and methyl crotonate.
Patent GB-1224790-A (GB)
Title: Fully electronic crosspoint
IPC: H03K17/62
Filed: 1968-12-13
Abstract: 1,224,790. Automatic exchange systems; transistor gating circuits. INTERNATIONAL STANDARD ELECTRIC CORP. 13 Dec., 1968 [18 Dec., 1967], No. 59345/68. Headings H3T and H4K. A crosspoint for a telephone switching network comprises two pairs of transistors T1, T2 and T3, T4 connected respectively in series with the a and b wires and having their bases and emitters so connected to a transformer, which supplies radio frequency biasing current to the crosspoint, that in alternate half-cycles of the biasing current T1, T3 and T2, T4 respectively are conductive whereby a continuously open crosspoint having a low insertion loss is provided. The transformer has a damping winding (not shown) which can be shortcircuited so as to prevent the crosspoint from being opened by the biasing current.
Patent GB-1368270-A (GB)
Title: Combined drilling and reaming tool
IPC: B23D77/00
Filed: 1971-12-29
Abstract: 1368270 Combined drill and reamer L VORABBI 29 Dec 1971 60565/71 Heading B3C A combination tool comprises a drill 1 having two cutting lips 8, 108, and a coaxial reamer 2 having at least three cutting lips 4, 104, 204, the diameter of the reamer being greater than that of the drill. The drill may be integral with the reamer, or it may be interchangeably screwed into the reamer, Fig. 3 (not shown). The drill may be a U-shaped flat drill (101) Fig. 5 (not shown). The cutting edges of the drill overlaps the cutting edges of the reamer.
Patent GB-1259722-A (GB)
Title: Improvements in or relating to agricultural implements
Inventor: APPLETON ERIC ALFRED
IPC: A01C7/00
Filed: 1969-12-24
Abstract: 1,259,722. Agricultural implement. APPLETON ENTERPRISES Ltd. 21 Dec., 1970 [24 Dec., 1969], No. 62869/69. Heading AID. An agricultural implement, attachable to a tractor at 8, produces ridges in or on which seeds are sown, and clears the furrows between these ridges for the passage of irrigation water. A set of first pressing tools 10, 11, 12 consolidates the ridges formed by tools 9. Seeds are delivered from hopper 17, through flexible pipes, to spouts 35, 36 which are vertically adjustable to sow seeds in or on the consolidated ridges. Immediately after sowing a set of second pressing tools 37, 38, 39, 40 further consolidates the ridges. Finally furrowing tools 50, 51, 52, 53, clear the furrows between the ridges.
Patent GB-645228-A (GB)
Abstract: 645,228. Liquid-fuel nozzles. BROWN, T. T., and SWINNEY Bros., Ltd. April 30, 1948, No. 11926. [Class 75(i)] A liquid-fuel burner has a fuel nozzle member 24 mounted at the end of a liquid fuel supply tube 12 and coned down in two stages with cylindrical portions 30, 31 of successively smaller diameter so forming the fuel nozzle 33, and a spigot 32 superimposed one upon the other, and upon the fuel supply pipe 12, the fuel nozzle member 24 being mounted in an air or, steam supply nozzle 22 in spaced and fixed relation with a correspondingly shaped passage so that the fuel nozzle 33 exit end is preferably in the same transverse plane as the exit end of the air or steam nozzle. The tube 12 with fuel nozzle member 24 is held in fixed spaced relationship with the air or steam nozzle 22 by means of collars 20 and 27 provided with slots 21 and 28 to impart a swirl to the air or steam admitted through inlet 4 and passed outwardly through the annular orifice formed between the cylindrical fuel nozzle 33 and the orifice 29 of the air or steam nozzle. Liquid fuel is passed into tube 12 through inlet 3 and a finely adjustable valve 10 formed as a plug with one or more surface longitudinal slots. The position of the valve 10 is indicated by a fixed pointer 13 and grooves 14 cut on a valve spindle 8.
Patent GB-713298-A (GB)
Abstract: 713,298. Piles; docks. POINTER, R. W., and DELONG, L. B. Oct. 21, 1952. No. 26408/52. Class 68(2) A platform structure for marine and land use comprises a hollow body in bodies 10, which mav be filled with water to give increased weight or with air to give buoyancy, and tubular columns or piles 12 which may slide therethrough or be clamped thereto as circumstances may require. A fluidpressure actuated annular jack 60 is housed within the structure between fluid-pressure actuated clamp rings 61, 62 one or other of which is operated according to whether the pile is to be driven or withdrawn and/or the platform raised or lowered. In the form shown the platform comprises a number of longitudinal and transverse beams 10 covered with planking 16. In another form it comprises a single hollow raft-like structure which may be used as an oil well drilling barge for off-shore drilling operations or several such structures may be joined together to form a temporary floating dock. The piles themselves may be provided with a pneumatic plug 32 which when expanded serves as an internal grip for handling the pile or enables it to be filled with water or air.