baber/WOPTO huggingface dataset:
Patent GB-1535859-A (GB)
Title: Semiconductor memory cells
IPC: G11C11/412
Filed: 1976-05-24
Abstract: 1535859 Transistor memories INTERNATIONAL BUSINESS MACHINES CORP 24 May 1976 [30 June 1975] 21370/76 Heading H3T A bistable memory cell comprises a pair of crosscoupled field effect transistors Q3, Q4 and a pair of load transistors Q 1, Q2 the latter having their gates connected to a common word line and their drains connected to respective bit lines, the cell being so operated that the word line potential maintains the transistors Q1, Q2 conductive throughout operation. The transistors Q3, Q4 are enhancement type, and the transistors Q1, Q2 may be either depletion type as shown or enhancment type, Fig. 2 (not shown) the word line voltage for the lower level of conduction of transistors Q1, Q2 being selected to prevent turn off (e.g. 0 V for depletion type and 2À5 V for enhancement type) and being 8À5 V for the upper level of conduction in both cases. The arrangement is an improvement over that disclosed in Specification 1,530,139 in that it obviates the loss of stored data which may occur if the load transistors are turned off for too long a period. In the standby condition, the word line is at its low level and the bit lines are at a potential greater than 4 V, the exact value depending on how many cells in a memory column store "0" and how many store "1". Write operation.-The word line is raised to 8À5 V and either the "0" or "1" bit line is reduced to 2 V by turning on either Q7 or Q8. If the "0" line is reduced, the potential at A falls. At the same time, the increase in word line voltage causes the current through Q2 to rise so that the potential at B rises. These two effects set the circuit into the state in which Q3 is on and Q4 is off. Conversely if the potential on the "1" line is reduced the circuit will set to the opposite state. Read operation.-The word line is again raised to 8À5 V with Q7, Q8 both cut off. The current through the conductive transistor Q3 or Q4 will rise giving a corresponding rise in voltage at node F or G which is detected by the sense amplifier.
Patent GB-479007-A (GB)
Title: Improvements in or relating to centrifugal separators
IPC: B04B11/08
Filed: 1937-08-03
Abstract: 479,007. Centrifugal separators. AKTIEBOLAGET SEPARATOR. Aug. 3, 1937, No. 21397. Convention date, Aug. 25, 1936. [Class 23] Separated liquid is discharged from a centrifugal machine through a paring member 3 which projects into the rotating liquid in the chamber 4 in the neck of the bowl 1. This chamber is sealed against the admission of air by means of discs 5, 7 carried by the paring member. They may enter the liquid in the paring chamber 4, or as shown in Fig. 1, they may enter the liquid in chambers 6, 8 above and below the paring chamber. The liquid from the bowl rises through the apertures 10, 11, 12 to the chambers 8, 4, 6, and a radial air channel 9 is provided in the lower wall of the chamber 8. Any air present in the bowl at starting, is sucked out with the discharging liquid, and the liquid surfaces round the disc 3 will then be nearer to the axis than the surfaces at the outer sides of the discs 5, 7. In a modification, liquid is conducted from the paring discharge member 3 through apertures 18, 19, Fig. 2, to the sealing chambers 14, 15.
Patent GB-1043558-A (GB)
Title: Cash desk
IPC: A47F9/04
Filed: 1963-05-29
Abstract: 1,043,558. Cash desks. C. BOTTCHER. May 29, 1963, No. 21406/63. Heading A4T. [Also in Division G4] A cash desk enabling several customers to be dealt with at a time comprises a bench having at one end a register 4, Fig. 1, and a basket support 5 from which goods may be placed on one of three receiving surfaces 2 preferably of different colours, leading at the other end to three sloping retrieval compartments 3<SP>1</SP>, 3<SP>11</SP>, 3111 having two hinged arms 11, 12 for diverting the goods into the correct coloured compartment, the arms being connected at their pivots by cranks and links, gearing or magnetic devices, through tubular supports 25, 26 to slides 31, 32, Fig. 6, in front of the discharge from a charge dispenser 15 supported above the compartments whereby, when the arms divert goods to a particular compartment, they move the slides so as to discharge the charge into a corresponding coloured tray 19, 20, 21. In Fig. 6 the charge is directed towards the middle shoot 17 and tray, and by moving one slide 31 or 32 to abut the other, the charge is directed to the right or left of guides 35 into the right or left shoot 16, 17 and tray. Compartments 1<SP>111</SP> holds wrapping materials and the bench carries a fold-away chair 22.
Patent GB-741479-A (GB)
Title: Improvements in or relating to trichlorodinitrobenzene
IPC: C07C205/12
Filed: 1952-08-26
Abstract: Trichlorodinitrobenzenes are made by nitrating a trichlorobenzene with a nitrating agent comprising nitric and sulphuric acid, the composition of which is adjusted to give a spent nitrating agent containing 3 to 10 per cent, preferably 6 to 7.5 per cent, of water. A preferred process comprises nitrating 1 : 2 : 4-trichlorobenzene at 100 DEG -150 DEG  C. with 1-1.5 times the theoretical amount of a nitric acid/sulphuric acid nitrating agent adjusted to give 6-7.5 per cent of water in the spent nitrating agent.  The products are purified by heating a trichlorodinitrobenzene phase with a phase comprising a mixture of nitric and sulphuric acids containing not more than 15 per cent water at 70-135 DEG  C., separating the organic phase and allowing it to solidify.  The process is suitably applied to the nitration of a dehydrochlorinated benzene hexachloride.  The products are used as fungicides, insecticides and plant growth regulants (see Group VI).  In examples the above nitration process is used for the nitration of (1)-(5) 1 : 2 : 4-trichlorobenzene to give as the main product 1 : 2 : 4-trichloro-3 : 5-dinitrobenzene; (6) a mixture consisting mainly of trichlorobenzenes obtained by dehydrochlorinating benzene hexachloride to give a product containing a large proportion of dinitro derivatives, the main product being 1 : 2 : 4 - trichloro - 3 : 5 - dinitrobenzene, and (7) 1 : 2 : 3-trichlorobenzene to give the 4 : 6-dinitro derivative.  An example of the purification of 1 : 2 : 4 - trichloro - 3 : 5 - dinitrobenzene by heating with a mixture of nitric and sulphuric acids is also given.ALSO:Plant growth regulant, fungicidal and insecticidal compositions comprise a minor proportion of 1 : 2 : 3-trichloro-4 : 6-dinitrobenzene produced by the nitration of the corresponding trichlorobenzene (see Group IV(b)) and a major proportion of a diluent together with a minor amount of an inert surface active agent.  The invention also comprises compositions comprising a minor proportion of 1 : 2 : 3-trichloro-4 : 6-dinitrobenzene with a major proportion of 1 : 2 : 4-trichloro-3 : 5-dinitrobenzene, in which the 1 : 2 : 4-trichloro-3 : 5-dinitrobenzene is preferably present in an amount not exceeding 95 per cent, such compositions being produced by nitration of mixed trichlorobenzenes.  The active materials may be used in the form of a water suspension disposed by means of a wetting agent, or in solution in organic solvents such as hydrocarbons, ketones, chlorinated solvents, p  esters, alcohols and mono- and diethylene glycol monoethyl ethers, or the active materials may be mixed with solid diluents such as talc or clay to give dusts. Examples of aqueous dispersions, solutions and powders incorporating 1 : 2 : 3-trichloro-4 : 6-dinitrobenzene and mixtures thereof with 1 : 2 : 4-trichloro-3 : 5-dinitrobenzene are given.
Patent GB-170372-A (GB)
Title: Improved fuel for gas fires
IPC: F21H5/00
Filed: 1920-07-16
Abstract: 170,372. Dowler, W., and Guinness, A. T. July 16, 1920. Radiants for gas fires.-These are formed from a mixture of blue clay, coal dust, wood chips, extract of logwood, green copperas, rock ammonia, and alum made into a paste with water, moulded to shape as desired, and fired between layers of coke. Alternatively, some of the materials may be mixed first and the others added afterwards, or the logwood, copperas, alum and rock ammonia may be applied in the form of a solution after the furnace treatment.
Patent GB-576487-A (GB)
Title: Improvements in change-speed gear of motor vehicles
IPC: F16D23/04
Filed: 1943-12-24
Abstract: 576,487. Clutches. AUSTIN MOTOR CO., Ltd., and HAEFEL1, J. C. Dec. 24, 1943, No. 21621. [Class 80 (ii)] In a synchromesh variable speed gear, a disc A is slidably mounted in splines on the driven shaft B and has conical clutch faces a<1> that engage cones d, d' formed, on clutch rings D, D<1> splined on the shaft E and pinion E<1>. When the sleeve C is moved it carries with it the disc A to engage the conical clutch cone d or d<1> and further movement depresses the spring-pressed ball F and permits the internal splines on the shaft to engage the dog teeth a<2> or a'. The cones d or d<1> have holes G radially or normal to the conical surface that extend to the splines and are plugged with fabric or other friction material which fills in around the'splines and prevents the plug from rotating. The plugs also enter annular grooves e<1> cut in the splines and prevent longitudinal movement of the clutch rings D. D'. In a modification the plugs may be inserted in the outer members a<1>.
Patent GB-1114954-A (GB)
Title: Animal growth promoter
IPC: A23K20/195
Filed: 1967-05-10
Abstract: The growth of meat-producing animals is promoted and the feed ultilisation efficiency is improved by the administration of curvularin.  This may be administered mixed with the feed, in solution or suspension, mixed with solid carriers, as pill, paste, capsule, or tablet, or by parenteral administration or subcutaneous implant.
Patent GB-379068-A (GB)
Title: Improvements appertaining to cords for operating hinged windows and the like
IPC: E05D13/00
Filed: 1931-07-30
Abstract: 379,068. Cords. LEVER, W. and LEVER, T. C., (trading as LEVER & SONS, J.), Crown Rope Works, Delph Street, Bolton. July 30, 1931, No. 21731. [Class 109.] The ends of a cord, e.g. that used for operating a hinged window, are joined by folding each end upon itself to form an opening for a link d. The cord comprises a core b and a plaited covering a ; at each end of the cord a portion of the core b is removed and the end of the covering a is folded over and is threaded by means of a needle into the space left by the cut-away core. The diameter of the cord at the joint is thus substantially that of the remainder of the cord.
Patent GB-788353-A (GB)
Title: Improvements in and relating to storage devices
Inventor: SIMPSON ANTHONY WILLIAM
IPC: G11C11/22
Filed: 1954-07-26
Abstract: 788,353. Electric digital-data-storage apparatus. PLESSEY CO., Ltd. July 11, 1955 [July 26, 1954], No. 21747/54. Class 106 (1). [Also in Groups XXXVI and XXXIX] When a ferro-electric capacitor having a rectangular polarization/field hysteresis loop is initially polarized, the voltage necessary to reverse the polarization depends on the thickness of the dielectric. This principle is applied to the storage of digital information in a parallel group of barium titanate capacitors graded in order of thickness and initially polarized in the same sense, the number of capacitors to have their polarizations reversed being determined by the maximum amplitude of a saw-toothed voltage wave. Several parallel groups of capacitors may be formed from a wedge-shaped sheet 10 of suitable ferro-electric material, Fig. 3, which can be produced, in the case of a single crystal, by slowly lifting a parallel-sided sheet out of an etching solution. A series of electrodes 11, 12 are silvered on opposite sides of the sheet, those on one face being tapered so that each inter-electrode capacitance is equal in value. All the electrodes 11 are connected to a large linear capacitor 13 shunted by a resistor 14, while electrodes 12 form three separate groups of capacitors selectable by a switch 15, over which the saw-toothed voltage wave, Fig. 1, is applied. A voltage pulse is produced across condenser 13 each time the polarization sense of a ferro-electric capacitor is reversed, and a count of these pulses determines the instant when the saw-tooth voltage must be disconnected for a particular digit to be stored. When a voltage of the same waveform but opposite polarity is subsequently applied, the selected capacitors are restored in turn to their initial polarization sense and a number of pulses corresponding to the stored digit is produced across condenser 13. Specification 788,352 is referred to.
Patent GB-657666-A (GB)
Title: Improvements in or relating to television transmission tubes
Inventor: CASSMAN HARRY
IPC: H01J31/36
Filed: 1946-02-21
Abstract: 657,666. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 21, 1946, No. 21812/50. Divided out of 657,613. Drawings to Specification. [Class 39 (i)] The subject-matter of this Specification is substantially the same as that described in Specification 657,634, but the claims differ. Specification 657,613 is referred to.
Patent GB-899016-A (GB)
Title: Improvements in or relating to cleaning pads
Inventor: BOORSTYN ESTHER
IPC: A47L17/00
Filed: 1960-06-22
Abstract: 899,016. Gloves. GILLON, H. Z. June 22, 1960, No. 21845/60. Class 141 [Also in Group XXIII] A glove 10 made of fabric, felt, rubber or plastic is provided on one side with a cleaning pad (see Group XXIII) comprising a permeable fabric or felt sheet 11 sewn to the glove and retaining an impermeable sac 2 which has holes 3 therein and contains soap or detergent. The working surface of the sheet 11 may be provided with a layer of steel wool &c.
Patent GB-459314-A (GB)
Title: Improvements in the manufacture of coal-gas
IPC: C10B27/00
Filed: 1935-08-01
Abstract: 459,314. Coal - gas and water - gas mixtures. GAS LIGHT & COKE CO., and RANDALL, E. L., Horseferry Road, Westminster. Aug. 1, 1935, No. 21847. [Class 55 (ii)] In the manufacture of coal gas in intermittently operated vertical chambers wherein the charge is steamed during the latter part of the carbonizing period, the bottom gas from one chamber is passed through the free space of at least one of the chambers in which the charge is being steamed. The gas leaving the top off-take of a chamber during the first part of the carbonization period may also be similarly treated. Bottom gas from a series of chambers 1 passes to a sealless hydraulic main 5 from which the gas is distributed to one or more valved in-takes 9 which enter the tops of the chambers at ends remote to the usual off-takes 2. The chambers are arranged to be at different stages of carbonization at the same time.
Patent GB-756268-A (GB)
Title: Automatic ribbon rewind cut-off mechanism for typewriters and like machines
IPC: B41J31/10
Filed: 1954-07-27
Abstract: 756,268. Typewriters. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 27, 1954 [July 30, 1953], No. 21886/54. Class 100 (4). Ink-ribbon mechanism.-A ribbon-winding mechanism for power-operated typewriters or the like having a power-roller 6, comprises two ribbon spools 83, driven alternately by pawls 91, by mechanism actuated from a portion 52 of the power-roller 6, and latching means whereby one spool may be continuously driven until winding is complete, whereupon the latching means is released. The spools one only of which is shown, may be fed in letter-space steps during typing by the operation of a power typeaction which rocks a bail causing a pull on a link 54 to pivot a lever 48 which allows a halfrevolution of a cam 41. This oscillates a frame 38 and through a link 78, lever 77, and link 79, pivots a lever 87, and an attached pawl 91 rotates its spool 83. When one spool is full the ribbon 130 is tensioned and a lever 101 associated with the empty spool, pivots counterclockwise, pulls a link 99, and an interposer 98 is rotated so it lies in the path of a lug 107 on the lever 87. Consequently the next oscillation of the lever 87 causes a G-shaped plate 97, carrying the interposer 98, to shift upwardly so the pawl 91 is in effective position, and the pawl 91 associated with the full spool is disengaged. A manual control 112 may be used to determine which spool effects winding. To effect a winding, a continuous actuation of the frame 38 is necessary, and this is effected by depression of a plunger 58 sliding on pins 62, 63 in slots 59, 61. Slot 61 is recessed at 69 to latch the plunger in downward position where its end 71 engages a pin 72 on the lever 48 which pivots both end lugs 49, 56 clear of the pins 51 to permit cam 41 to rotate continuously. When winding is completed the tensioning action on the lever 101 and the lifting of the G-plate 97 causes a pin 113 thereon, to rock a cam lever 123 having a cam stud 125 which acts on a cam surface 127 to unlatch the plunger 58 and restore the lever 48 to original position where it blocks rotation of the cam 41.
Patent GB-1131515-A (GB)
Title: Dispensers
Inventor: OROFTON RUPERT JAMES
IPC: G01F11/24
Filed: 1966-05-17
Abstract: 1,131,515. Delivering measured quantities of granular material. INTERNATIONAL LABORATORIES Ltd. 9 May, 1967 [17 May, 1966], No. 21887/66. Heading B8N. [Also in Division B2] A dispenser for dispensing predetermined quantities of a particulate material, e.g. saccharin powder, comprises a cylindrical canister 1 having a screw-on cap 2 including an end wall 4 provided with a dispensing bore 3, and a valve assembly comprising rotatably mounted circular plates 5, 6 disposed adjacent the outer and inner surfaces respectively of the end wall 4, the plates 5, 6 being rigidly interconnected by a spindle 7 and each being formed with an aperture 8, 9 respectively disposed so that only one aperture 8, 9 can register with the dispensing bore 3 at any one time. In operation, the dispenser is inverted and the aperture 9 in the plate 6 registered with the bore 3 to fill the bore 3 with the particulate material, the plates then being rotated to register the powder discharge aperture 8 with the bore 3, allowing a quantity of material corresponding to the volume of the bore 3 to be dispensed. Projections and depressions may be formed on the plates 5, 6 and end wall 4 to assist accurate registration of the apertures.
Patent GB-1335919-A (GB)
Title: Aqueous dispersion of ethylene copolymers for coating or impregnating polyester fabrics
IPC: C09D123/08
Filed: 1971-04-19
Abstract: 1335919 Aqueous dispersions containing ethylene copolymers E I DU PONT DE NEMOURS & CO 19 April 1971 [16 Feb 1970] 21906/71 Heading C3P [Also in Divisions B2 and D1] An aqueous dispersion useful for coating or impregnating and flame proofing polyester textile materials comprises (1) from 20 to 95% by weight of an ethylene copolymer comprising at least 30% by weight of copolymerized ethylene and not more than 70% by weight of at least one copolymerized polar monomer, (2) from 5 to 80% by weight of a halogenated alkyl phosphate and (3) from 0 to 25% by weight of a finely divided particulate filler, dispersed in water, the percentage of components (1), (2) and (3) being based on the total weight of such components. The dispersion should have a high solids content of 40 to 70% by weight but is generally diluted down to 15 to 40% solids when applied as a coating on the fabric. It may be coalesced into films by removal of the aqueous medium either at room temperature or at elevated temperature up to 180 C. The copolymerized polar monomer may be derived from a vinyl ester of a carboxylic acid, an unsaturated carboxylic acid, a halogenated vinyl compound e.g. vinyl chloride or vinylidene chloride, vinyl alcohol (hydrolysed vinyl acetate), acrylamide, #-dimethylaminoethyl methacrylate or #-hydroxyethyl acrylate or other acrylic or methacrylic esters e.g. methyl methacrylate or ethyl- or isobutyl-acrylate. The preferred halogenated alkyl phosphate is tris-(2,3-dibromopropyl) phosphate. Preferred copolymers are those derived from ethylene, vinyl acetate and/or an alpha-beta unsaturated carboxylic acid. The finely divided particulate filler may be a clay or other mineral silicate, a metal oxide, metal carbonate, metal phosphate or metal borate and/or an organic or inorganic pigment. The polyester fabric may be derived from various specified polyester fibres, polyethylene terephthalate fabric being used in the Examples. A wax and a surfactant having an HLB number greater than 18 may also be included in the aqueous dispersion and any carboxylic groups present in the copolymer may be neutralized or partly neutralized by alkali metal ions, e.g. Na<SP>+</SP> or K<SP>+</SP>.
Patent GB-1529293-A (GB)
Title: Protection cap for the valve of a pressure vessel or cylinder
IPC: F17C13/06
Filed: 1977-05-25
Abstract: 1529293 Valves M KITSUDA 25 May 1977 21974/77 Heading F2V The valve assembly C on a gas container B is protected by a cap B made from a single pressing of sheet metal. The cap has a screwthreaded cylindrical portion 1a with a pair of outwardly projecting spaced lugs 1a<SP>11</SP>, and an outwardly flared portion 1b with a pair of oppositely disposed hand openings 2 with safety grips 5 for lifting the container. The lugs 1a<SP>11</SP> are bored to receive a clamping unit. (For Figure see next column.)
Patent GB-1476938-A (GB)
Title: Apparatus and method for controlling a nuclear reactor
IPC: G21C7/36
Filed: 1974-05-17
Abstract: 1476938 Controlling nuclear reactors COMBUSTION ENG Inc 17 May 1974 [22 May 1973] 22156/74 Heading G6C The description releates to controlling the operation of a nuclear power generating system and is substantially the same as that of Specification 1,476,937 the claims relating to calculating a limit value for one of the system parameters.