baber/WOPTO huggingface dataset:
Patent GB-1104138-A (GB)
Title: Optical filtering devices and methods of making same
IPC: G02B5/20
Filed: 1965-02-23
Abstract: 1,104,138. Infrared filters. BECKMAN INSTRUMENTS Inc. Feb.23, 1965 [March 2, 1964(2)], No.7695/65. Heading G2J. A filter having a high transmission for infrared radiation and being substantially opaque to all wavelengths shorter than a predetermined cuton wavelength comprises a thin transmitting wafer having uniformly distributed high and low refractive index material to produce selective scattering of all wavelengths shorter than a certain wavelength and one or more absorbing materials having an absorption band in the shorter wavelength transmission region so as to sharpen the cut-on front. The thin transmitting wafer may be a polyethylene matrix with a pore size of 1<SP>.</SP>5 microns or alternatively 10 microns so that air of refractive index 1<SP>.</SP>0 is distributed in polyethylene of index 1<SP>.</SP>5. In a modification T11, T1C1, TlBr, HgI 2  or Hg 2 C1 2  is evenly distributed in a polyethylene matrix. The absorbing material may be one or more selected from BaCO 3 , BaF 2 , BeO, KBr, PbCO 3 , CsBr, CaCO 3 , Li 2 CO 3 , LiF, SrF2, TiO 2  and freshly prepared MgO, finely divided and substantially evenly dispersed throughout a polyethylene, polystyrene or polytetrafluoroethylene matrix. When using hygroscopic absorbing materials, such as KBr or CsBr which tend to coalesce when finely divided, they are mixed with the polyethylene or other matrix material and also with small amounts of a highly refined mineral oil placed in a die, heated, pressed to form a thin wafer, leached with organic solvent such as hexane or heptane, reheated, and repressed.
Patent GB-694755-A (GB)
Title: Improvements in or relating to dry plate rectifier assemblies
Inventor: VEEVERS JOHN FOSTER
IPC: H01L25/03
Filed: 1951-04-03
Abstract: 694,755. Asymmetrically conducting electric resistances. GENERAL ELECTRIC CO., Ltd. March 24, 1952 [April 3, 1951], No. 7711/61. Class 37. A dry plate rectifier assembly comprises a cylindrical block 1 of polythene with four symmetrical holes 3-6 between the parallel faces 2, and with four holes 9-12 in two pairs at different depths parallel to the end faces 2 and passing through pairs of holes 3-6. Wires 13 are inserted through holes 9-12 and located by turning down the ends into grooves 14. Thus each hole 3-6 is traversed by two wires 13 at different levels and the space between the wires 13 is occupied by a rectifier element 8, a metal disc 8a and a steel spring 15, the rectifier elements in holes 3 and 6 being opposite to those in holes 4 and 5. Thus the complete assembly constitutes a bridge rectifier, which may finally be covered with a moulded plastic case. The rectifier elements may be one or more copper oxide or selenium units.
Patent GB-540836-A (GB)
Title: Improvements in apparatus for uncoiling and coiling strip material
IPC: B65H54/42
Filed: 1940-04-30
Abstract: 540,836. Winding webs. HEATH, A. R. N., and TAPP, T. C. April 30, 1940, No. 7789. [Class 100 (i)] Winding or unwinding apparatus, particularly for use in apparatus for electroplating narrow metal strips, comprises a pair of spaced parallel horizontal shafts each provided with a number of flanged pulleys connected by slack endless belts which support the coils during winding or unwinding. In one form, Fig. 1, the uncoiling apparatus comprises spaced shafts 4 provided with a number of flanged rollers 5, opposite pairs of which are connected by slack belts 7 forming supports for narrow rolls which are inserted between the flanges 6 of the rollers. After passing through an electrolysis bath B or other treating apparatus, the strips are rewound by an apparatus similar to the uncoiling apparatus but provided with means, e.g. a motor 11 and chain drive, for positively driving the roll supporting belts. In a modification of the uncoiling apparatus, the rolls are supported on spaced flanged rollers 18, Fig. 5, and the strips pass over guide rollers 21, 20 carried by members 19 which, in addition to the flanges 17 of the rollers 18 serve to prevent lateral displacement of the strips.
Patent GB-1526625-A (GB)
Title: Process for subbing photographic hydrophobic films
IPC: G03C1/93
Filed: 1977-02-24
Abstract: 1526625 Subbing layers KONISHIROKU PHOTO INDUSTRY CO Ltd 24 Feb 1977 [1 March 1976] 07848/77 Heading B2E [Also in Division G2] A photographic hydrophobic film is subbed by subjecting at least one surface thereof to a pre-treatment to render it hydrophilic and coating on the pre-treated surface an aqueous dispersion containing a copolymer comprising, as main comonomers and in a combined weight of more than 76% by weight based on the polymer, (1) 20-90% by weight of glycidyl methacrylate and/or glycidyl acrylate and (2) 10-60% by weight of at least one comonomer of the formula: where R 1  is hydrogen or methyl and R 2  is an aliphatic hydrocarbon residue of 1 to 9 carbon atoms, provided that a polymer comprising 20-60% by weight of glycidyl methacrylate and 25-60% by weight of ethyl acrylate in a combined amount of more than 76% by weight based on the polymer is excluded. Suitable substrate films are polyesters, such as polyethylene-terephthalate, polyethylene-2, 6-naphthalate and poly-(cyclohexane-1, 4-dimethanolterephthalic acid ester), cellulose diacetate and cellulose triacetate, and polycarbonate. Other comonomers may be present in the coating polymer and when component (2) is present in larger amount than component (1) a comonomer capable of rendering the resulting copolymer relatively hard may be present and when component (2) is present in amounts smaller than that of component (1) a comonomer suitable to lower the glass transition temperature of the resulting copolymer may be added. Examples of suitable comonomers for each case are given. A further layer comprising colloidal silica may be applied on top of the subbing layer.
Patent GB-526220-A (GB)
Title: Improvements relating to projection lamps
IPC: F21V11/00
Filed: 1939-03-10
Abstract: 526,220. Projection lamps. HARLEY, M. C. March 10, 1939, No. 7856. [Class 75 (iv)] A lamp comprises a parabolic reflector 1 with a light source 2 at its focus, a hood 8 larger in cross-section than the front of the reflector and containing spaced annular diaphragms 14 whose inner diameters are not larger than the diameter of the reflector, and a cylinder 13 coaxial with the reflector and of less diameter than the inner diameters of the diaphragms 14. The cylinder 13 has inner and outer annular ribs 15, 16, and may be composed of telescoping parts with inner and outer flanges. The hood 8 may also be cylindrical. The whole interior of the shield system may be blackened or dulled, e.g., by anodizing. The rear part 18 of the reflector is also non-reflecting. The lamp has a handle 4 and may be mounted on a tripod.
Patent GB-1383380-A (GB)
Title: Electronic apparatus for indicating conductor overload conditions
IPC: H02H3/093
Filed: 1972-02-21
Abstract: 1383380 Protective arrangements WESTINGHOUSE ELECTRIC CORP 21 Feb 1972 [15 March 1971] 7862/72 Heading H2K An electronic overload protective arrangement comprises means 10 to produce a first signal X proportional to the magnitude of the current in a protected conductor, means 18 to sum the signal X with a reference second signal C of opposite sign to the signal X and of a magnitude proportional to the steady-state current capability of the conductor to produce a difference signal (X - C) and means 20 to integrate the difference signal with time to produce an integrated signal 1/A(X - C)T. Means 22 are provided to algebraically sum a reference third signal B of opposite sign to the first signal and of a magnitude proportional to the maximum continuous current handling capability of the conductor, the integrated signal and the first signal, and means 26 respond to the algebraic sum 1/A(X - C)T + X - B to provide a trip signal when the sum is zero or of the same sign as the first signal. Fig. 2 (not shown) illustrates a solid state circuit in which the means 14, 20 and 26 are operational amplifiers and the trip signal is applied to the control circuit of a static power switch circuit.
Patent GB-1496354-A (GB)
Title: Glycerol derivatives and herbicidal uses thereof
IPC: C07C239/00
Filed: 1974-02-21
Abstract: 1496354 Glycerol derivatives SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 19 Feb 1975 [21 Feb 1974] 7902/74 Heading C2C [Also in Division A5] The invention comprises 2-alkyl glycerol derivatives of formula wherein R represents an alkyl group; and X, Y and Z individually represent a hydrogen atom, or an optionally substituted alkyl, alkenyl, aralkyl, acyl or carbamoyl group; provided that (a) at least one of X, Y and Z is an aralkyl group and (b) when one of X, Y and Z represent a hydrogen atom or an acyl group the other two do not. These compounds may be obtained by reacting a mono- or di-hydroxy compound of formula  wherein R is an alkyl group, and one or two of the groups P, Q and S is/are an aralkyl group and the remaining one or two groups is/are hydrogen atoms with a compound of formula wherein Y<SP>1</SP> is an optionally substituted alkyl, alkenyl or aralkyl group. The intermediate 2-methylglycerol is prepared in Example I by the oxidation of methallyl alcohol using H 2 O 2 /tungstic acid.
Patent GB-397578-A (GB)
Title: Improvements in devices embedded in walls and the like for securing fittings
IPC: F16B13/12
Filed: 1932-03-17
Abstract: 397,578. Wall plugs. STOTT, A. A., 9, Sheil Road, Kensington, Liverpool. March 17, 1932, No. 7912. [Class 89 (i).] A wall plug comprises a tube of lead C enclosing a core of fibre or similar material D. In a modification the lead casing is formed with external helical ribs J.
Patent GB-276900-A (GB)
Title: Electromagnetic sound reproducer
IPC: H04R9/04
Filed: 1927-03-22
Abstract: 276,900. Federal Telegraph Co., (Assignees of Kolster, F. A., and Sollie, S. A.). Jan. 18, 1927, [Convention date]. Loud-speakers; magnetic instruments; diaphragms.-In an electromagnetic sound reproducer having a moving coil carried by the diaphragm, the diaphragm is conical and has a free edge and is flexibly suspended between its apex and peripheral edge. The Figure shows the diaphragm 11 carrying a flanged bobbin 10 and the moving coil 19 and supported by a membrane 15 stretched over frame members 16, 17. The membrane 15 provides one wall of a closed chamber which provides pneumatic damping. The electromagnetic system comprising field coil 24 and polepieces forming the annular gap 9, is provided with a metallic disc 25 to produce eddy currents in order to obtain a flat response characteristic. The membrane which may be a sheet or plurality of cords preferably extends along a portion of the diaphragm surface between it and a flange 14 formed on the bobbin 10.
Patent GB-1357282-A (GB)
Title: Plate for a plate heat exchanger
IPC: F28F3/04
Filed: 1972-02-21
Abstract: 1357282 Plate heat exchangers ALFALAVAL AB 21 Feb 1972 [19 Feb 1971] 7991/72 Heading F4S  Each plate of a plate heat exchanger stack comprises a plurality of side-by-side ridges 1 pressed up from a plane 2 of the plate and a plurality of side-by-side grooves 3, forming an angle α with the ridges 1, depressed from the plane 2 of the plate. Every second plate of the stack is turned through 90 degrees relative to its adjacent plates, so that the ridges of one plate will extend parallel with and abut the underneath side of the grooves of the adjacent plate. As shown the ridges 1 are continuous along their length while the grooves 3 are interrupted along their length by the ridges. However the ridges 1 may have discontinuities at spaced intervals along their length (see Figs. 5-8, not shown), and in one embodiment these discontinuities are disposed at the points where the ridges cross the grooves (see Figs. 9-12, not shown). In a modification the parallelogram-shaped areas between adjacent ridges and grooves may be curved (Fig. 13) or corrugated (Fig. 14) instead of being plane. To ensure uniform fluid distribution adjacent the zone where fluid enters the flow channels defined between adjacent plates, the plane 2 of the parallelogram shaped areas may be displaced a certain distance perpendicular to the plane of the plates to thereby vary the depth of the flow channels across the width of the plate (see Figs. 16-21, not shown).
Patent GB-1036006-A (GB)
Title: Method of increasing the surface area of a boiled liquid and improved nuclear reactors embodying the method
Inventor: LINDSTROM OLLE
IPC: G21C15/16
Filed: 1963-02-28
Abstract: 1,036,006. Cooling reactors. ALIMANNA SVENSKA ELEKTRISKA A.B. Feb. 28, 1963, No. 8018/63. Heading G6C. In a boiling water nuclear reactor, the area of the vapour-liquid surface is increased by mounting perforated structures, within the pressure vessel, at the normal liquid surface. As shown, the wire netting screen 10 is located in the reactor pressure vessel 16 above the boiling liquid 13. The boiling liquid is stated to fill the interior of the screen and steam is passed through the holes 11. The screens may be formed of either plastics or metal. In further embodiments, not shown, several small screens are used.
Patent GB-220585-A (GB)
Title: Improvements in damping devices for rope driven hauling plants
IPC: B66B7/08
Filed: 1924-03-29
Abstract: 220,585. Brewer, G., (Krupp Akt.-Ges., F.). March 29, 1924. Dash - pots of the cylinder and piston type used to check vibration in hauling apparatus fitted with springs or like resilient members, are constructed with a screwed sleeve 32 which is moved axially when it is rotated so as to vary the sizes of the orifices in the dash-pot piston. A reserve chamber 34 is provided, which allows for expansion of the liquid.
Patent GB-767904-A (GB)
Title: Improvements in or relating to a tent-like shelter for vehicles
IPC: B60P3/36
Filed: 1955-03-19
Abstract: 767,904. Shelters for vehicles. WENINGER, P. March 19, 1955, No. 8055/55. Class 20(1) A tent-like shelter for fitting to the roof of a vehicle comprises an awning and collapsible framework which extend above and beyond the roof of the vehicle. As shown, a framework consisting of hoops 6, 7, 8 is pivotally mounted in brackets 16 secured to a base frame 3, 4 and has an awning 9 secured to it. To retain the shelter in its opened condition, stays 20 are provided for attachment to the hoop 6 (Fig. 3) from which closure members 10, 11 hang. The base frame is securable to the vehicle roof by suction cups 24 and clamps 26, 28, the latter providing for adjustment to different sizes of vehicle. The closure members 10 may be used to cover over mattresses, blankets &c. carried' in the framework and base frame when the shelter is collapsed.
Patent GB-1534237-A (GB)
Title: Digital apparatus for setting the voltage across capacitor means
IPC: G04G99/00
Filed: 1977-02-25
Abstract: 1534237 Automatic electric control BENDIX CORP 25 Feb 1977 [2 April 1976] 08159/77 Heading G3N [Also in Division F3] The voltage across a capacitor 4 is set by a digital apparatus which first measures the value of the capacitor and then applies a number of current pulses to bring it to the desired charge. A pulse generator 8 applies a series of 256 pulses through dividers 10, 12 the division factor of which is set by a computer 2. Initially the dividers are set so that a single pulse only passes to current source 14, which in turn delivers a single positive current pulse to capacitor 4. The resulting charge on the capacitor is then switched via amplifier 26 to an analog-todigital converter 28 and the digitized value entered in the computer. This value is then applied as a dividing factor to dividers 10 and 12. The computer then initiates an operation of pulse burst generator 8 to apply 256 pulses to the dividers, which divide by the factor entered by the computer.  Each pulse in the resulting series of pulses causes current source 14 to apply a current pulse to the capacitor. Switches 18, 20, 22 and 24 are solid-  state devices. A further capacitor 6 may be simultaneously charged with negative pulses. The system may be used to give a time delay fuze for a projectile, the timing being independent of variations in the values of the capacitors.
Patent GB-810704-A (GB)
Title: Grease composition and method of preparation thereof
Filed: 1957-03-12
Abstract: A grease comprises (a) a lubricating oil; (b) a mixture of calcium, and optionally up to 15 molar per cent barium, soaps and salts of the acids specified below; (c) 0.5 to 5 per cent wt. (as PbO) of at least one lead soap of one of the specified acids; and (d) 1 to 10 per cent wt. of an extreme pressure agent containing chlorine, sulphur or phosphorus.  The specified acids comprise: (I) 10 to 50 per cent wt. C1-C6 unsubstituted straight-chain saturated monocarboxylic acids; (II) 5 to 50 per cent wt. C7-C12 unsubstituted or monohydroxy-substituted saturated aliphatic monocarboxylic acids having no side chain larger than a methyl group; (III) 5 to 40 per cent wt. C13 + unsubstituted or monohydroxy-substituted saturated or mono-unsaturated aliphatic monocarboxylic acids; and (IV) 25 to 60 per cent wt. of C6-C18 acids derived from coconut oil.  The oil (a) may be mineral or synthetic, e.g. di-(2-ethyl hexyl) sebacate, dibutyl phthalate, di-(2-ethyl hexyl) adipate or polyethylene glycol di-(2-ethyl hexoate).  Typical of the specified acids are: (I) acetic, propionic, butyric, valeric and caproic; (II) heptanoic, caprylic, pelargonic, capric, undecylic, lauric, alpha hydroxy decanoic and mixed unsubstituted C8, C10 and C12 acids having a methyl side chain; and (III) myristic, palmitic, stearic, oleic and 12-hydroxy stearic.  The lead soap (c) may be formed in situ, e.g. by adding lead acetate or PbO or preformed.  Extreme pressure agents mentioned are methyl dichlorostearate, chlorinated sperm oil, sulphurized sperm or lard oil, and aryl, alkyl and alkaryl phosphates such as tricresyl phosphate.  Optional ingredients mentioned are antioxidants such as 2-6-di-t-butyl-4-methyl phenol, phenothiazine, diphenyl-p-phenylene diamine, hexyl gallate, 4-t-butyl catechol, phenylbeta - naphthylamine, 2 - 4 - di - t - butyl - p-cresol, tri-t-amyl phenyl phosphite plus dicyclohexylamine, polymerized trimethyl dihydroquinoline, and mixtures of mono- and di-heptyl diphenylamines.  In an example a Stratco contactor is preheated to 250 DEG  F. and charged, in order, with a solvent refined naphthenic oil (500 SUS/100 DEG  F.), lime, acetic acid, water, caprylic acid, coconut oil, fatty acids derived from hydrogenated tallow and litharge.  The temperature is raised to 345 DEG  F. over one hour and the contents are then transferred to an open paddle kettle.  The mixture is dehydrated when the alkalinity (per cent 60) is between 0.5 and 0.7.  Diluent oil is added to adjust the penetration while the mixture is recycled through a homogenizer.  Specification 788,510 is referred to.
Patent GB-311868-A (GB)
Title: Improvements in cooking utensils
IPC: A47J36/36
Filed: 1928-03-17
Abstract: 311,868. Standard Aluminium Co., Ltd., and Williams, J. M. March 17, 1928. Heating and cooking vessels; jackets. - A cooking vessel comprises a pan 1 of part spherical form surrounded by an integral jacket 2 of conical form depending below the pan to form a support therefor. Holes 8 are provided in the upper part of the jacket. A handle 6 and a detachable lid 4 are provided.
Patent GB-1450412-A (GB)
Title: Process for the simultaneous production of methanol-utilising and non-methanol-utilising micro-organisms
IPC: C12N1/20
Filed: 1973-02-20
Abstract: 1450412 Co-cultivation of methanol-utilizing micro-organisms SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 18 Feb 1974 [20 Feb 1973] 8198/73 Heading C6F A methanol-utilizing micro-organism is grown aerobically in a medium comprising methanol, assimilable nitrogen, and essential salts, in the presence of one or more non-methanol-utilizing micro-organisms which are capable of metabolizing a product of the methanol-utilizing microorganism. The methanol-utilizing micro-organism may be the Gram-negative, non-motile, non-sporeforming, rod-shaped bacterium NCIB No 11040, or a strain of Pseudomonas, Hyphomicrobium, Vibrio bacteria, Pichia, Candida, Torulopsis, or Hansenula and the non-methanol-utilizing microorganism may be a strain of Pseudomonas, Arthrobacter, Chromobacterium, Mycobacterium, Achromobacter, Acinetobacter, Curto bacterium, and/or members of the Enterobacteriaceae. A specified mixed culture designated JMS 72 may be employed. The temperature is preferably maintained at 38-45C, and the pH at 6À4-7À4.
Patent GB-847912-A (GB)
Title: Improvements in or relating to electrolytic processes for the refinement of metals
Inventor: ANTILL JOHN EDWARD
IPC: C25C3/34
Filed: 1956-03-15
Abstract: 847,912. Refining refractory and other metals by fused salt electrolysis. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. March 15,1957 [March 15,1956], No. 8210/56. Drawings to Specification. Class 41 Impure metal is refined by electrolysis in a fused salt bath by making the impure metal the anode and separating it from the major part of the electrolyte by a porous diaphragm which retains impurities insoluble in the electrolyte or more noble than the said metal, forming a deposit of refined metal at the cell cathode, removing the anode and diaphragm together with the retained impurities from the electrolyte and melting the refined metal so that it forms a molten layer protected by electrolyte from contamination. Preferably the cathode is of a material to which the refined metal does not adhere and the cathode, anode, and porous diaphragm are located within a porous crucible which retains the refined metal, so that on removal of the anode and diaphragm the crucible is removed from the outer cell container and electrolyte is allowed to drain out of it until only a film covers the refined metal whereafter the crucible is transferred to a furnace to melt the refined metal. The molten metal may be run off from beneath the electrolyte or allowed to solidify with it and separated from it in the solid state. As described the process is applied to refining uranium using a tungsten or molybdenum cathode, a diaphragm formed by a silica glass tube having a porous sintered glass base surrounding the anode, and a lithium chloride-potassium chloride entectic containing 5 to 10% uranium tetrafluoride in a refractory container, with an inert cell atmosphere of argon. Beryllia or alumina may be used for the diaphragm and the same materials may be used for the surrounding removable crucible. Reference is made to refining thorium and niobuim by a simular procedure. The Provisional Specification refers to use of a cathode of pure uranium for use in refining uranium.
Patent GB-786265-A (GB)
Title: A process of improving the physical properties of the soil and of preparing soil conditioners
IPC: C09K17/32
Filed: 1954-03-22
Abstract: A porous crumb structure is obtained in soil by incorporating into the soil either a starch or a high molecular weight starch product dissolved in water or a solid, spreadable starch or high molecular weight starch product which is soluble or swells in cold water.  The starch may be used with another non-hydrophobic material, e.g., an agrciultural chemical, inert diluents, pesticides, &c.  Starch products may be: starch aldehydes, substances capable of generating an aldehyde, aldehydes condensed with synthetic resin components, cold-swelling starch, starch esters and/or ethers.  Ethers and/or esters of certain other high molecular weight polysaccharides may be used.  Suitable starch products are referred to in Specifications 494,927, 601,374, 632,785, 632,789, 632,791, 633,342, 634,368, 772,479 [all in Group V].ALSO:Cold-swelling starch for soil improvement is obtained by heating a mixture of water and starch or a degraded starch product or a starch ester or ether for a short time to a high temperature, above the gelatinization point, pressing out the mixture into a thin layer and either simultaneously drying or drying immediately thereafter.  Preferably 0,5-2 parts by weight of water is used to 1 part by weight of starch.  Specifications 494,927, 601,374, 632,785, 632,789, 632,791, 633,342, 634,368 and 772,479 are referred to.