baber/WOPTO huggingface dataset:
Patent GB-1240578-A (GB)
Title: Field effect transistor memory cell
IPC: G11C13/04
Filed: 1969-11-14
Abstract: 1,240,578. Read-only stores; data stores. INTERNATIONAL BUSINESS MACHINES CORP. 14 Nov., 1969 [24 Dec., 1968], No. 55770/69. Headings G4A and G4C. [Also in Division H1] The threshold voltage of an IGFET may be changed by irradiating the gate with electrons while applying suitable potentials to the transistor's electrodes. This change in threshold voltage persists after cessation of irradiation so that different threshold voltages, obtained by the use of different combinations of applied potentials during irradiation, may be used to permanently represent say a binary "zero" or a binary "one". The transistor may be used as a read-only memory or it may be used in association with an electron beam source so that the threshold voltage may be changed when desired. Fig. 3 depicts a memory matrix of IGFET's used with an electron irradiation source. Word lines 16 connected to the transistor gate electrodes are energized by pulse sources 8 which may form part of one register, and bit lines 14 connected to the transistor drain electrodes are energized by pulse sources 9 which may form part of another register. During the writing phase transistors may be irradiated individually or, as shown, all transistors in a row may be irradiated simultan - eously and have a common gate potential but independent drain potentials. During the reading phase current pulses from conducting transistors are picked up by sense amplifiers 15 loop coupled to the bit lines 14. The gate potential applied to a transistor during read-out may be of such a magnitude that current flow occurs in transistors in one of the binary conditions but not in those occupying the other condition, or that current flow in transistors in the two conditions is different. The circuit may be designed such that no current flow occurs in the absence of a gate signal whatever the condition of a transistor. Fig. 4a shows a demountable system in which the face-plate 42 is provided with a sealing gasket 50 which seats on knife edges on the tube body. An indexing system (not shown) is provided to ensure accurate replacement of the faceplate. The face-plate is provided with mounting recesses for memory matrices 40 which are temporarily wax bonded to the face-plate or more permanently secured if the array is to be used as a whole. The matrices are interconnected by tracks on the face-plate and by spring fingers actually contacting the individual matrix; thus suitable write potentials may be applied during irradiation. The face-plate may be removed to use the matrices, individually or together, as "in-air" read-only memories.
Patent GB-1147698-A (GB)
Title: New tetracycline derivatives
IPC: C07C233/00
Filed: 1966-12-15
Abstract: 1,147,698. Tetracyclines. LES LABORATORIES DAUSSE. 15 Dec., 1966 [15 Dec., 1965; 14 March, 1966], No. 56275/66. Heading C2A. [Also in Division A5] The invention comprises 2-carbonamidosubstituted tetracyclines of formula in which represents a tetracycline, chlorotetracycline, oxytetracycline or 6-dimethylchlorotetracycline residue; R 1  is H or C 1  to C 4  alkyl; R 2  is C r  to C 4  alkyl; R 1  and R 2  may be the same or different, and A is C 2  to C 10  alkylene; and pharmaceutically acceptable acid addition salts. Typical compounds are N,N<SP>1</SP>-bis- (tetracyclino - methylene) - N,N<SP>1</SP> - dimethylethylene diamine and N,N<SP>1</SP> bis-(tetracyclinoethylidene)-N,N<SP>1</SP>- dimethylethylene diamine. Salts are formed with, e.g. hydrochloric, citric, gluconic and penicillin acids. The compounds are formed by condensing the appropriate tetracycline antibiotic with an N,N<SP>1</SP>-disubstituted alkylene diamine of formula in an inert diluent in the presence of an aldehyde of formula R 1 CHO, wherein R 1  has the above meaning. The compounds are very soluble in water and are non-toxic and effective antibacterials (see Division A5).
Patent GB-1287637-A (GB)
Title: Ammunition and a process for manufacturing the same
IPC: F42B12/32
Filed: 1969-11-20
Abstract: 1287637 Moulding ammunition FABRIQUE NATIONALE HERSTAL 20 Nov 1969 [25 Nov 1968] 56846/69 Heading B5A [Also in Division F3] A process for the manufacture of a fragmentation element 4 for a grenade, comprises screwing a metal cup 14 upon a resisting core (not shown) conforming perfectly to the inner shape of the cup, introducing the resulting core into a mould (not shown), introducing hardened bodies such as steel balls 6 into the so conditioned mould and packing by means of vibrations, shakes or shocks, casting a synthetic resin for filling up all the interstices between the hardened bodies and the mould, and finally stripping off the mould. Thin ribs are provided in the bottom of the mould to keep the hardened bodies at a slight distance beneath the edge of the element. The resin is a polyamide, a superployamide or a cellulose ester.
Patent GB-1174907-A (GB)
Title: Improvements in or relating to Silver Halide Photography
Inventor: DERSCH FRITZ
IPC: C07D257/04
Filed: 1966-12-20
Abstract: 1,174,907. Tetrazole derivatives. GAF CORP. 20 Dec., 1966 [3 Jan., 1966], No. 56895/66. Heading C2C. [Also in Division G2] 5 - Methyl mercapto - 2,3 - diphenyl tetrazolium iodide is prepared by reacting dehydrodithizone and methyl iodide in chloroform. Dehydrodithizone is prepared by reacting diphenylthiocarbazone with an alkaline solution containing potassium ferricyanide in a nitrogen atmosphere.
Patent GB-1223279-A (GB)
Title: Means for the pneumatic transport of refuse and garbage
IPC: B65F5/00
Filed: 1968-11-29
Abstract: 1,223,279. Pneumatic conveyers. SVENSKA FLAKTFABRIKEN A.B. 29 Nov., 1968 [4 Dec., 1967], No. 56901/68. Heading B8A. Branch pipes 3 connecting refuse shoots 2 to a pneumatic conveyer tube 1 are each provided with a disintegrating apparatus 9 and a valve 11. The conveyer tube 1 is provided with an air inlet 1a, controlled by a valve 14, and is connected through coarse and fine separators 4, 6 to a suction fan 8. A programme control 12 is provided to switch on the fan 8 at timed intervals and to control the disintegrating apparatus 9 and the associated valves 11. Each branch pipe 3 is provided with level detectors 13 which actuate the associated disintegrating apparatus and the fan when refuse in the branch pipe accumulates above the level of the upper detector 13. By means of a three-way valve 19 and a connecting pipe 18, the fan 8 may be utilized to increase the suction in a pneumatic laundry conveyer installation 17.
Patent GB-1420965-A (GB)
Title: Multistage reduction gears
IPC: F16H1/28
Filed: 1972-12-11
Abstract: 1420965 Toothed gearing LOHMANN & STOLTERFOHT AG 11 Dec 1972 [16 Dec 1971 23 Dec 1971] 57051/72 Heading F2Q In a multistage reduction gear comprising two in-line epicyclic gear stages 200, 300 and a preceding simple reduction gear stage 100, a sun gear 10 of the output epicyclic gear stage 300 is mounted resiliently in a hollow shaft 18 integral with the planet carrier 12 of the output stage 300 and the sun gear 10 is integral with the planet carrier 8 of the epicyclic gear stage 200. The input side of the planet carrier 8 is mounted in a bearing 20 in which it can move pendulously. A sun gear 6 of the intermediate epicyclic gear 200 is connected by means of a shaft 5 and coupling 19 to a large gear 4 of the preliminary gear stage 100 in such a manner that a degree of angular movement can occur between the two. A gear 3 meshes gear 4 and is connected to a shaft 2 of an hydraulic motor 1. The resilient mounting may comprise rubber 0-rings 15, Fig. 2, supporting the outer race 23 of a roller bearing. The planet carrier 8 may also be mounted resiliently.
Patent GB-1247424-A (GB)
Title: A method of and installation for the treatment of solutions by solid ion exchangers
IPC: B01J47/10
Filed: 1969-11-21
Abstract: 1,247,424. Ion-exchange. SOC GRENOBLOISE D'ETUDES ET D'APPLICATIONS HYDRAULIQUES (SOGREAH). 21 Nov., 1969 [21 Nov., 1968; 23 Oct., 1969], No. 57161/69. Heading B1J. An ion exchange unit is filled with exchanger to the levels shown and the body 10 being filled to the cover 15. Liquid to be treated passes in via conduit 28 through zone A and leaves via outlet 23. Rinsing liquid introduced through conduit 29 into zone B out through zone A and strainers 23. Liquid entering through conduit 32 removes a portion of exchange through conduit 33. Exchange is reintroduced at 14 and circulates in the direction given by the arrows to return to the receptacle 21 and repeat of the cycle. Regeneration takes place by liquid entering at 11 and leaving at 13 and washing by liquid entering at 22 and leaving at 13. The inlet and outlet flows are controlled so that the interface between different liquids used in the process is compacted during the movement of resin.
Patent GB-1213876-A (GB)
Title: Method of stabilizing acidic liquid lignin compounds
Inventor: LAVICKA EDUARD
IPC: C08H5/02
Filed: 1968-12-04
Abstract: 1,213,876. Stabilizing lignins. SPOLEK PRO CHEMICKOU A HUTNI VYROBU. 4 Dec., 1968 [6 Dec., 1967], No. 57517/68. Heading C2C. Stable acid ligniniferous liquids are prepared by dissolving ligniniferous compounds and alcohols and/or ketones and/or ketone-alcohols, in sulphuric acid, phenolsulphonic acid or ethylsulphuric acid or mixtures thereof in the presence of urea. Specified ligniniferous compounds are alkyl lignins, alkali lignins and ligninsulphonic acids (dried sulphite liquor). The liquid products are used as hardeners for furan resins.
Patent GB-1413058-A (GB)
Title: Semoconductor devices
IPC: H01L21/00
Filed: 1973-12-13
Abstract: 1413058 Semiconductor devices WESTING- HOUSE ELECTRIC CORP 13 Dec 1973 [26 Dec 1972] 57724/73 Heading H1K A method of fabricating a semiconductor device includes forming an apertured mask on a substrate, epitaxially growing semiconductor material in the apertures so that it forms outgrowths overlapping the mask, removing the mask, and depositing a contact on the substrate exposed beyond the outgrowths. In fabricating a Schottky barrier gate field effect transistor, a GaAs substrate 10 has an epitaxial layer 11 deposited on one surface thereof, aligned in the (001) plane, the layer having an impurity concentration suitable subsequently to form the channel; a silicon oxide mask 13 is deposited thereover, and apertures etched to expose areas 15 of the layer 11; GaAs is epitaxially deposited in the apertures, from the vapour phase, so that facets 16, 17 forming source and drain regions are produced, having outgrowths 18, 18<SP>1</SP> and 19, 19<SP>1</SP> overlapping the mask surface; the mask is removed and the outgrowths 18, 19 used as masks during deposition of the Schottky barrier gate material 25. The gate material, which may be of gold, gold-germanium or gold-tantalum may also be used to form Schottky or ohmic contacts to the facets, i.e. to form source and drain electrodes 23, 24. Such a construction ensures that the gate electrode 25 is not in contact with the source or drain electrodes, and determines accurately the gate dimension. The GaAs may be doped with chromium, or alternatively the device may be of silicon or germanium.
Patent GB-1420440-A (GB)
Title: Radio position finding
IPC: G01S1/30
Filed: 1972-12-15
Abstract: 1420440 Radio navigation SOC D'ETUDE ET D'APPLICATION DES TECHNIQUES NOUVELLES NEO-TEC 15 Dec 1972 [17 Dec 1971 27 July 1972 (2)] 58076/72 Heading H4D Relates to hyperbolic path-difference radionavigation systems utilizing phase difference between emissions from spaced transmitters. According to the invention each or at least two transmitting stations E i  radiate continuously an unmodulated wave O i  of a frequency Fs i  specific to a transmitting station and each station also radiates intermittently and recurrently, according to a predetermined programme, at least one unmodulated wave O ij  having a measuring frequency F j  common to all the transmitting stations; and a receiver of specified functional characteristics is provided. EMBODIMENTS Transmitters, Figs. 2, 3, 4.-Figs. 2 and 3 illustrate an example of ten transmitting stations E 1  to E 10  transmitting continuously on respective specific frequencies Fs1 to Fs10, lying in the range 405 to 406 kHz and sequentially on frequencies corresponding to measuring frequencies F 1  to F 6 . An exemplary transmitter, Fig. 4, incorporates a free-running oscillator 51, a line 55 permitting frequency setting control for all the frequencies required and phaseshifters 531 to 536 allowing phase adjustment on local signals Si1 to Si6 corresponding to the six measuring frequencies. The programme of intermittent signal radiation according to Fig. 3, is effected by a circuit 44 and an electronic switch 43. Further details of the transmitter are described with reference to Figs. 5 (production of frequency Si1) and 6 (a modification of Fig. 5) (neither Figure shown). Receivers, Fig. 8.-A first exemplified receiver includes quartz oscillators 7220, 7710, 7810 and 7910; a frequency-changer 72 acts on incoming continuous specific-frequency signals from three transmitters, e.g. O 5 , O 6 , O 9 , selected by a control signal E and the six incoming measuring-frequency signals OK 1  to OK 6 . A programming circuit 73 takes timing signals from oscillator 7220 and has inputs H for programme timing and E for selecting the transmitting stations. Control circuits 77 to 79 each include a frequency control employing synchronous detection of continuous received signals, and phase control utilizing synchronous detection of the non-continuous received signals. The Specification describes in detail the aforementioned control circuits, Figs. 9 to 12 (none shown). Modifications are described, Figs. 13, 19 to 31 (none shown). Arrangements are included to remove the effect of Doppler shift (the receiver usually being mobile). Position-line measurement and ambiguityremoval are described with reference to prior art, and include successively increasing accuracy of position-line measurement.
Patent GB-1211729-A (GB)
Title: Method and apparatus for bonding foamed plastics material to a backing
Inventor: BENIGNO SAM ROSARIO
IPC: B32B27/00
Filed: 1967-12-23
Abstract: 1,211,729. Laminates. S. R. BENIGNO. 23 Dec., 1967, No. 58561/67. Heading B5N. A backing web and a foam plastics web are both fed upwardly into the nip formed between two rolls arranged side by side for rotation about horizontal axes, the surface of the foam web adjacent the backing web being heatedjust prior to the nip and the resultant laminate being guided around one upper quadrant of one of the rolls. As shown, webs 14 and 16 of cloth and foamed plastics material respectively are led from respective supply rolls (not shown) over guide rolls 32 and 26 respectively to the converging surfaces of respective nip rolls 18 and 30. Fluid pressure actuated means 29 urges roll 18 towards roll 30. A gas flame heater 28 is rotatably mounted on a shaft 50. The angular position of the heater may be adjusted by mechanism 70-78 so that either web 16 only is heated, to render its surface adhesive, or web 14 as well as web 16 is heated. Roll 30 may be cooled, e.g. by water. The laminate 33 emerging from the nip 46 between rolls 18 and 30 is fed via tensioning means 20 to a wind-up roll (not shown). The foamed plastics material may be polyurethane. Instead of cloth, web 14 may be of paper. Rolls 18 and 30 may be coated with polytetrafluoroethylene. They are both driven at the same peripheral speed by an electric motor 34. Pipes 84 are provided for withdrawing fumes from the region immediately below the nip 46. Instead of gas-flame heater 28, a radiant infra-red heater may be provided. In a modification, Fig. 3 (not shown), another web, similar to web 14 is bonded to the side of web 16 remote from web 14. Another heater, similar to heater 28, is provided for this purpose.
Patent GB-1242858-A (GB)
Title: Gain controlled amplifier circuit
IPC: H03F3/193
Filed: 1968-12-11
Abstract: 1,242,858. Transistor amplifying circuits. RCA CORPORATION. 11 Dec., 1968 [11 Dec., 1967], No. 58805/68. Heading H3T. An amplifier circuit comprises a semiconductor device having source and drain electrodes and a plurality of gate electrodes, means for applying input signals to a first gate electrode 16 and means for applying a gain controlling potential to a second gate electrode 18. A resistor 36 is connected to the source electrode such that changes in the gain controlling potential tend to change the current through the resistor and hence the voltage between the source and the first gate electrode, and the arrangement is characterized by circuit means, i.e. resistor 30, for applying a portion of the gain controlling potential to the first gate electrode. In the embodiment the portion of the gain controlling potential applied to the first gate electrode is sufficient to keep the difference in potential between this electrode and the source electrode constant. A further fixed bias may be applied to the source electrode, by means of resistors 48, 50 to enable the use of a gain controlling potential which does not change sign over the gain control range. The arrangement is intended to maintain the voltage between the source and first gate electrode constant as the source to drain current is varied by the gain control potential.
Patent GB-1461914-A (GB)
Title: Vehicle overload proteciton device
IPC: B66F9/22
Filed: 1973-12-20
Abstract: 1461914 Overload protection of masted lift truck EATON CORP 20 Dec 1973 [27 Dec 1972] 59228/73 Heading B8H [Also in Division Fl] An hydraulic circuit, to prevent the forward tipping of a fork lift truck having a pair of hydraulic cylinders 28 to tilt the mast of the truck about a horizontal axis between either side of a vertical plane through said axis, comprises a tilt selector control 36 to respectively supply pressurized fluid from a source (not shown) and return the fluid to a tank (not shown) via pipes 46 or 68 to the full or annular sides of the piston 48, 50 of the cylinders 28. The annular and full area sides of the respective pistons are further interconnected by pipes 72, 74 and pipes 54, 56 respectively which are coupled via check valves 76, 58, whereby only the highest pressure from a respective side of the piston is coupled with a respective side of piston 88 in a tilt limiting valve 64. The piston 88 has an annular ring 90 through which fluid flows between the pipe 68 and the selector tilt control valve 36 during the normal tilting of the mast. As soon as the mast approaches an overbalance situation the pressure on the annular side of the pistons 48 moves the piston 88 to close the connection between the pipe 68 and the valve 36 and thereby prevent further motion in the overbalance direction. A by-pass pipe 100 with a one-way valve 102 allows fluid to be supplied to the cylinders 28 to move the mast away from an overbalance position.
Patent GB-1355950-A (GB)
Title: Isotopic separation process
IPC: B01D59/50
Filed: 1971-04-19
Abstract: 1355950 Mass separators JERSEY NUCLEAR-AVCO ISOTOPES Inc 19 April 1971 [25 March 1970] 59498/73 Divided out of 1355714 Heading H1D In a process of separating isotopes by selective photo-ionization of atoms, as described in Specification 1,355,714, the ionization process is arranged to give the liberated electrons an energy of at least one volt so that the gas formed by ionized atoms and electrons expands faster than the neutral atoms whereby the ionized atoms and the neutral atoms may be collected separately. A magnetic field may be provided to restrict the directions in which the charged particles may expand.
Patent GB-1283377-A (GB)
Title: Apparatus for electrostatic coating of objects with powder
IPC: B05B5/047
Filed: 1969-12-05
Abstract: 1283377 Spray producers ATLAS COPCO AB 5 Dec 1969 [14 Dec 1968 12 Nov 1969] 59566/69 Heading B2F In an electrostatic spray gun, charge collected from particles is re-imparted to them by an electrode 26 at the nozzle outlet. Powder is dispersed from hopper 2 in a gas flow 5. The powder particles may be charged by electrodes 24 or by collision with insulating parts, at throat 10. The dispersion is whirled by vanes 12 and imparts charge to a collector electrode 25 which, by means of conductor 27 transmits it to electrode 26 for recharging the particles. Powder particles are removed by electrodes 31 from gas escaping laterally. Instead of powder, the particles may be liquid droplets of paint.
Patent GB-597955-A (GB)
Abstract: 597,955. Telescopes. KRAL, H. A. WHITEHEAD-, and LENS & SCIENTIFIC INSTRUMENT CO., Ltd. June 15, 1945, No. 15234. Convention date, June 15, 1944. [Class 97 (i)] In a telescope at least one of the slidable parts, e.g., the body tube, and the draw tube cooperating therewith are provided with screwthreads at their ends which are juxtaposed when the telescope is extended so that after sliding the parts, threaded engagement is effected to provide a rigid and dust-proof joint between the parts. In addition or alternatively thereto, the body tube part and the eye-piece tube part may be provided with co-operating screw-threads so that a rigid joint is effected between said parts when in the closed position. As shown, the body tube 1 of a telescope carries the usual sun shade 6 and is screw-threaded at 7 to co-operate with the screw-thread 8 on the draw tube 2 when the parts are extended. This draw tube 2 may have a screw connection or the usual telescopic connection as at 9 with a second draw tube 3 carrying the eye-piece tube 4 and eye-guard 5. The eye-guard has a flange 10, the sleeve 11 at which is threaded at 12 so that when the telescope is closed by sliding the screwthread 12 co-operates with a screw-thread 13 on the body tube 1. A bevelled or conical lip 14 may be formed on the flange 10 to contact a similar surface or edge 15 on the body tube. In the embodiment wherein all the parts are in threaded engagement when the telescope is extended, a threaded eye-piece is used for focusing.
Patent GB-1280848-A (GB)
Title: Recovery of aromatic values
IPC: B01J23/00
Filed: 1969-12-24
Abstract: 1280848 Recovering aromatic hydrocarbons UNION CARBIDE CORP 24 Dec 1969 [27 Dec 1968] 62935/69 Heading C5E Sulphur-containing still bottoms formed during the refining of crude styrene obtained from ethyl benzene are treated to recover both sulphur (as S and H 2 S) and aromatic values by: (a) dilution with 0À1-10 times their weight of a diluent selected from benzene, toluene, xylene and mixtures thereof; (b) filtering the mixture of diluent and still bottoms to remove solid sulphur; (c) subjecting the filtrate at 250-600 C. and LHSV of 0À1-10 to simultaneous hydrodesulphurization and hydrodealkylation in a hydrotreating zone containing a catalyst comprising both (i) a hydrogenating component selected from oxides of Cr, W and/or V, and (ii) an active acidic component selected from silica-alumina, alumina-boria, magnesia-silica, boron phosphate, metal-exchanged and/or decationized molecular sieves, acid-treated bentonite or kaolinite clays, and mixtures thereof; and (d) separating the effluent to recover desired component, e.g. H 2 S, benzene and ethyl benzene.
Patent GB-659387-A (GB)
Abstract: 659,387. Cupola' furnaces. THORNTON, A. A. (Grede Foundries, Inc.). Nov. 29, 1949, No. 30571. [Classes 51(i) and 51 (ii)] In a cupola furnace 5 having a blast box 9 supplying air to tuyeres 15 through elbow joints 10, bridging of the charge is substantially eliminated and the output increased by the use of tuyeres at least nine inches high and having an aggregate vertical cross-sectional area of the openings at least equal to one-third of the internal cross-sectional area of the shaft at the tuyere level, the tuyere measurements being taken at the exterior surface of the shell. The tuyeres 15 are symmetrically placed around the cupola shell, are flared inwardly and have a middle partition 17. Immediately above the tuyeres the lining 18 is increased in thickness forming an overhang which tends to exclude coke and slag from the tuyere openings.