baber/WOPTO huggingface dataset:
Patent GB-1437620-A (GB)
Title: Zoom lens having an extremely long focal length range and wide relative aperture
IPC: G02B15/167
Filed: 1973-08-29
Abstract: 1437620 Zoom lenses JOS SCHNEIDER & CO OPTISCHE WERKE 29 Aug 1973 [14 Sept 1972] 40629/73 Heading G2J A zoom lens of long focal length range (e.g. 1:30) and wide relative aperture (e.g. 1:1.7 to 1:5.1) for projection, cinematography or television comprises at least two separate variable sections (term defined) which in toto comprise at least three fixed lens components and at least four displaceable lens components for continuous and stepless variation of the focal length. Data are given for three examples.
Patent GB-1444907-A (GB)
Title: Structural members
IPC: E04H17/14
Filed: 1972-09-01
Abstract: 1444907 Fencing A CIUPKA and P H WOODS 3 Sept 1973 [1 Sept 1972] 40639/72 Heading E1B Elongate extruded plastics structural members for nailing to supports to form continuous surface fencing comprises a tapering cross section provided with at least one reinforcing rib 14 and a rebate 18 on one edge which receives the opposite edge of an adjacent member. The nails are driven through flange 17 and their heads housed in groove 16. In a modification the flange 17 is omitted and a groove is provided in the rear face of the member to receive the heads of fixing elements or, a slide block.
Patent GB-958092-A (GB)
Title: 12-hydroxyiminosteroids and production thereof
IPC: C07J41/00
Filed: 1962-06-05
Abstract: The invention comprises a compound of the formula: <FORM:0958092/C2/1> wherein X represents b -hydroxymethylene, b -lower alkanoyloxymethylene, carbonyl or ethylenedioxymethylene, Y represents methylene, b -hydroxymethylene, b -lower alkanoyloxymethylene, carbonyl or ethylenedioxymethylene, a double bond can exist between the 4- and 5-positions or between 5- and 6-positions and a hydrogen atom at the 5-position, when the said double bond does not exist, has an a - or b -configuration, and a process for the preparation thereof which comprises reacting 12-oxo steroids represented by the formula: <FORM:0958092/C2/2> wherein X, Y and the double bonds are as defined above, with hydroxylamine. Any hydroxyl and/or oxo radicals except the oxo radical and the hydroxyl radical at the 12-position may be protected for example as acylated hydroxyl or ketalized oxo.  3, 3, 20, 20-Bisethylenedioxy-5-pregnen-12-one is obtained by ketalizing 12-acetoxy progesterone and deacetylating to obtain the 12-hydroxy compound, which is oxidized with chromic acid. In a similar manner 3, 3, 20, 20-bis-ethylenedioxy-5 b -pregnane-12-one is prepared by oxidizing 3, 3, 20, 20-bisethylenedioxy-5 b -pregnane-12a -ol.
Patent GB-1045707-A (GB)
Title: Electrostatic separation of gases at low temperature
IPC: C10K1/00
Filed: 1965-09-27
Abstract: 1,045,707. Electrostatic separation. CONCH INTERNATIONAL METHANE Ltd. Sept. 27, 1965 [Oct. 15, 1964], No. 41026/65. Addition to 1, 017. 660 Heading B2J. The process described with reference to Fig. 1 of the parent Specification is modified in that, prior to reducing the pressure of the mixture of liquified gases, the mixture is subjected to an ionization step in order to produce an increased concentration of charged solid particles during the pressure reducing step. The process may be applied to the separation of mixtures including two or more different gases, e.g. the separation of CO 2  and/or H 2 S from natural methane gas, CO 2  from air or CO 2  from a nitrogen/CO 2  mixture. One form of apparatus for separating CO 2  from methane gas, Figs. 1 and 2 (not shown) is as described in Figs. 1, 3 and 4 of the parent Specification except that a section of the pipeline leading from the liquefaction plant to the throttling valve is protected by lead shielding and contains a source of gamma radiation, e.g. a radioactive material such as Cobalt 60, for ionizing the mixture of liquefied gases before throttling. Ionization may alternatively be effected by means of a charging electrode 30 leaving sharp points 31, Fig. 3, located in a conductive pipe 3<SP>1</SP> before the throttling valve 8<SP>1</SP>.
Patent GB-1532919-A (GB)
Title: Plastics closure for bottles and other containers
IPC: B65D41/04
Filed: 1977-10-04
Abstract: 1532919 Closure caps ALBERT OBRIST AG 4 Oct 1977 [5 Oct 1976] 41180/77 Heading B8T A plastics closure cap, in particular a screw closure cap, comprises a pair of sealing lips 6, 7, the former having preferably axially extending inner face and intended to engage the end face 3 of container 1 with radially inwards deformation and the latter extending obliquely towards the closure axis at an acute angle α and intended to engage the outer edge of the container mouth, the distance between the adjacent, preferably parallel, faces of the lips being greater than the length of the outer lip. With such an arrangement no overlap of the lips occurs when the cap is applied.
Patent GB-1103742-A (GB)
Title: Ascorbic acid in continuous bread process
IPC: A21D2/22
Filed: 1965-09-29
Abstract: In the production of yeast-leavened bakery products, such as bread or buns, by the continuous dough process, there is added to the constituents, comprising a fermentation brew, flour, shortening, and an edible oxidizing agent, prior to mixing the batter in a developer an amount of ascorbic acid of at least 10 p.p.m. on a flour basis, for example 10-400 p.p.m., such as to significantly reduce the mixing speed requirements.  By the expression "ascorbic acid" is meant both of the isomers 1-ascorbic acid and d-araboascorbic acid.  Suitable oxidizing agents include potassium bromate, with or without potassium iodate, and ammonium persulphate.
Patent GB-969577-A (GB)
Title: Improvements relating to the remote control of gearbox mechanism
Inventor: PAYNE ERIC RICHARD
IPC: F16H61/30
Filed: 1962-11-02
Abstract: 969,577. Change-speed control. AUSTIN MOTOR CO. Ltd. Sept. 6, 1963 [Nov. 2, 1962], No. 41489/62. Heading F2D. In a remote control mechanism for a motorvehicle layshaft gear-box providing four forward speeds and reverse, comprising a doubleacting recuperative hydraulic system in which a ball-mounted hand lever 1 directly selects amongst three rods 5, 6, 7, each formed as a double-acting hydraulic piston which displaces liquid through pipes e.g. 12, 13 to actuate a corresponding gear-shift plunger, e.g 16, each double-acting piston rod 5, 6, 7 has retained at each end for limited axial freedom on annular recuperation valve 18 which, whenever the hand lever 1 is stationary, permits flow of liquid between a reservoir 4 and the corresponding pipe-line 12 or 13 through a groove 21 in the rod and a clearance at the bore of the valve 18. The drag of the valve 18 in its cylinder causes the valve 18 to lag and close upon movement of the appropriate piston rod 5, 6 or 7 by the hand lever 1. Specification 735,664 is referred to.
Patent GB-932380-A (GB)
Title: A process for preparing cyanoalkyl chlorosilanes and catalyst therefor
IPC: C07F7/14
Filed: 1959-12-07
Abstract: A catalyst composition, used to prepare alpha-cyanoethyl methyldichlorosilane from methyldichlorosilane and acrylonitrile, comprises (a) palladium (2) chloride, (b) a trialkylamine, and (c) a polyamine of the formula (R)(R1)N(CH2)mN(R1)2 where m is 1 to 6, R is a C1-8 alkyl radical, and R1 is hydrogen, a C1-8 alkyl radical, or an aminoalkyl, alkylaminoalkyl or dialkylaminoalkyl radical, there being 0,1 to 20 mols. of each ingredient.  The trialkylamines are preferably lower alkyl, e.g. triethyl-, tributyl-, methyl-ethylbutyl- &c. amines, but may be higher, e.g. dimethyl octadecylamine. Examples of specified polyamines are N,N,N1,N1-tetramethylethylene diamine, N,N,N1-trimethylethylene diamine, N,N-dimethyl-N1,N1-diethylethylene diamine, N,N,N1-trimethyldiethylene triamine &c.  Reference has been directed by the Comptroller to Specification 847,801.ALSO:Alpha-cyanoethylmethyldichlorosilane is prepared by reacting methyldichlorosilane with acrylonitrile in the presence of a catalyst composition comprising (a) palladium (2) chloride, (b) a trialkylamine, and (c) a polyamine of the formula (R)(R1)N(CH2)mN(R1)2 where m is 1 to 6, R is a C1-8 alkyl radical, and R1 is hydrogen, a C1-8 alkyl radical, or an aminoalkyl, alkylaminoalkyl or dialkylaminoalkyl radical, the ingredients being present in amount of 0,1 to 20 mol. per cent of each of (a), (b) and (c) based on the total number of mols. of both reactants.  The trialkylamines (b) are preferably C1-8 alkylamines, e.g. tri-ethyl-, tributyl-, methylethylbutyl- &c. amines, but may be higher, e.g. dimethyloctadecylamine.  Examples of specified polyamines (c) are N, N, N1, N1 - tetramethylethylene diamine, N,N,N1-trimethylethylene diamine, N,N-di-methyl-N1,N1-diethylethylene diamine, N,N,N1-trimethyldiethylene triamine &c.  Solvents such as acetonitrile and adiponitrile may be present.  The alpha-cyanoethylmethyldichlorosilane may be cohydrolysed with Me2SiCl2 and converted to a gum with KOH which is converted to an elastomer with silica and benzoyl peroxide.  Reference has been directed by the Comptroller to Specification 847,801.
Patent GB-897079-A (GB)
Title: Improvements in or relating to rifles
Inventor: RUFFELL LESLIE ERNEST
IPC: F41A15/14
Filed: 1959-12-08
Abstract: 897,079. Rifles and ammunition clips. STERLING ENGINEERING CO. Ltd. Nov. 28, 1960 [Dec. 8, 1959], No. 41740/59. Classes 9(1) and 119. A Short Magazine Lee-Enfield rifle, constructed to use 0.303 inch rimmed type ammunition is modified for firing U.S.A. type 7.62 mm. (0.30 inch) rimless ammunition. The modifications comprise:- (1) Replacing the barrel or modifying existing barrel and chamber to take the 0.30 inch ammunition. (2) Provision of new magazine. (3) Extractor replaced by one having a claw designed to engage in the groove of the rimless ammunition and to bias the cartridge towards the side of the rifle provided with an ejector device. (4) A projection or recess provided in the boltway to engage the base of the cartridge to ensure its positive ejection. (5) An adaptor fitted to the bridge of the rifle to accommodate the standard rimless ammunition loading clip and provided with recesses for engaging projections on the clip. The existing barrel may be modified by rechambering and electro-plating the bore to reduce its diameter or the existing barrel may be swage-hammered externally to reduce the bore. The magazine comprises two sheet metal interengaging components i, i<SP>1</SP> Fig. 6 formed with internal ribs k to ensure correct feeding and at one side of the magazine a projection n Fig. 3 engages a pivoted catch o to retain it in position, a release member q being provided for finger operation. The ammunition clip f Figs. 8, 9 is formed from sheet metal and is channel shape in cross-section with inturned edges g for engaging the grooves of the cartridges and thus enclosing the base portions thereof within the clip. Projections h engage in two niches v formed on the interior of the bridge adaptor t.
Patent GB-1008407-A (GB)
Title: Process for separating non-molten slag from titanium-containing iron sands
IPC: C21B13/10
Filed: 1961-11-22
Abstract: A non-molten TiO2-containing slag is separated from Ti-containing iron ore, particularly iron sand, pellets by heating the pellets in contact with a gaseous, liquid or solid reducing agent such as coke to a temperature of 1300-350  DEG C., e.g. in a rotary kiln, shaft furnace or an electrically heated graphite-lined crucible, until hollow balls are formed having an outer crust of reduced metallic iron and an inner layer of slag containing all the original Ti, removing the balls from the reducing agent before fusion takes place, then crushing them, and magnetically dressing to separate the iron from the slag.  The moulding into pellets may be effected with or without the use of a slag forming or caking agent.  The resulting slag may be used for producing titanium.ALSO:A non-molten TiO2-containing slag is separated from Ti-containing iron ore, particularly iron sand, pellets by heating the pellets in contact with gaseous, liquid or solid reducing agent such as coke to a temperature of 1300 DEG  to 1350 DEG  C., e.g. in a rotary kiln, shaft furnace or an electrically heated graphite-lined crucible, until hollow balls are formed having an outer crust of reduced metallic iron and an inner layer of slag containing all the original Ti, removing the balls from the reducing agent before fusion takes place, then crushing them, and magnetically dressing to separate the iron from the slag. The moulding into pellets may be effected with or without the use of a slag-forming or caking agent.  The resulting slag may be used for producing titanium.
Patent GB-1098873-A (GB)
Title: Differential drive assembly
IPC: F16H13/08
Filed: 1964-11-13
Abstract: 1,098,873. Differential gear. R. H. BRAUNE. Oct. 19, 1965 [Nov. 13, 1964], No. 41797/64. Heading F2D. A differential gear for a motor vehicle comprises balls or rollers 15 carried in recesses in a driving wheel 14 and frictionally engaging discs 16 fast with wheels 11, 12 and the pressure between the discs 16 is applied by springs 20 adjustable loaded by a nut 22 on a threaded extension of a shaft 10. As shown the springs 20 act through a thrust bearing 23 on a sleeve 13 fast with one disc 16 whilst the other disc 16 is secured to the shaft 10. In Fig. 3 (not shown) the differential gear is arranged outside a twopart roller (36, 37) of a motor mower and the spring (51) acts on one disc (46) keyed to the shaft (38) whilst the other disc acts through a thrust bearing (45) against a shoulder on the shaft. In Fig. 4 (not shown) a driving disc (55) carries conical friction rollers (56) engaging discs (58, 59) fast with wheels (53, 52). The driving wheel may be driven by a chain, belt or toothed gearing.
Patent GB-1562092-A (GB)
Title: Electrically insulated leadthrough assembly
IPC: H01B17/30
Filed: 1976-10-07
Abstract: In the case of an electrically insulated bushing having a bushing part (1) which passes through an opening (3) in a wall part (2), the wall part (2) and the bushing part (1) consist of materials having essentially the same coefficients of thermal expansion, and the insulation which is fitted between the mutually facing bushing surfaces of the two parts (1, 2) is a thin-film layer (5) which adheres firmly to the bushing surface of at least one of the two parts (1, 2) and consists of electrically insulating material. The thin-film layer (5) may consist, for example, of glass, silicon oxide or aluminium oxide. If at least one of the two parts (1, 2) consists of aluminium, the thin-film layer is preferably an aluminium-oxide layer formed by surface oxidation of the aluminium. As a result of its small thickness and its firm adhesion, the thin-film layer can follow the temperature changes without any risk of splitting or peeling, as a result of which a material which is suitable for the required insulation can be selected without any need to take into account its coefficient of thermal expansion. <IMAGE>
Patent GB-1125489-A (GB)
Title: Circular sawing machine
IPC: B23D45/10
Filed: 1966-09-20
Abstract: 1,125,489. Sawing. KEURO MASCHINENBAU G.m.b.H. & CO. K.G. 20 Sept., 1966 [14 Oct., 19651, No. 41952/66. Heading B5L. A sawing machine for cutting apart a workpiece 21 of large cross-sectional dimension and preferably of metal comprises two circular saw blades 10, 10<SP>1</SP> with their driving means rotatably mounted at a small distance from each other and within the same vertical plane on a slide carriage 6 movable in a vertical direction within a machine frame 1 by hydraulic units 2, 3, 2<SP>1</SP>, 3<SP>1</SP>, the bearing means of the saw blades being shiftable horizontally by an adjusting device 13, 14 which shifts both saw blades at the end of the downward movement of the slide carriage in their vertical plane towards one side for a distance at least equal to the distance between the saw blades so that, during a following upward movement of the slide carriage, one of the saw blades will cut the web remaining between the two parts of the workpiece. The slide carriage 6 is vertically movable in the frame 1 by a pair of hydraulic piston-and-cylinder devices 2, 3, 2<SP>1</SP>, 3<SP>1</SP> and has a pair of pivots 8, 81 respectively supporting levers 9, 9<SP>1</SP> carrying the circular saw blades 10, 10<SP>1</SP> at their lower ends. The upper ends of the levers have nuts 11, 11<SP>1</SP> engaging oppositely handed threaded portions of a spindle 12 which is adjustably rotatable to vary the spacing between the saw blades and is connected to a piston 13 in a cylinder 14 whereby the saw blades can be moved simultaneously sideways in their vertical plane. Initially, hydraulic fluid as constant pressure is supplied to conduits 5, 5<SP>1</SP> to raise the slide 6 and to conduit 15 to move the saw blades 4 to the left as seen in the Figure. The motors driving the saw blades are started so that the blades rotate in opposite directions 22, 22<SP>1</SP> and hydraulic fluid at higher pressure is supplied to conduits 4, 4<SP>1</SP> to move the slide 6 downwardly and engage the saw blades with the workpiece. When the blades have out through the workpiece, an arm 7<SP>1</SP> actuates a switch 19 controlling the high pressure fluid supply to a conduit 16 whereby the spindle 12 is moved to the left and the blades to the right a distance at least equal to the distance between the blades to cut through the lower portion of the web between the workpiece parts. When the spindle actuates a switch 17, the high pressure supply to conduits 4, 4<SP>1</SP> is discontinued so that the slide rises and the web is cut through, a limit switch 18 terminating the sawing operation.
Patent GB-1027898-A (GB)
Title: Improvements in or relating to cleansing preparations
IPC: F04C29/02
Filed: 1963-10-24
Abstract: Cleansing compositions comprise a conventional synthetic washing agent and a homogeneous mixture of (a) the mono- or di-ether derivative of a di- or trialkanolamine, respectively, wherein the ether alkyl radical is C10-C20, or a carboxylic acid salt thereof, and (b) the condensation product of a C10-C18 alkylamine and 1-8 molecules alkylene, preferably ethylene or propylene, oxide, or a carboxylic acid salt thereof.  Compound (a) and/or (b) if not a carboxylic acid salt may be quaternized with dialkyl sulphate. Specified carboxylic acid salts are those of citric, maleic, and nitrilotriacetic acids, and E.D.T.A.  The condensate of oleyl alcohol and 8-20 molecules ethylene oxide may be added as solution promoter. Examples of (a) are O-monolauryldiethanolamine, O - dilauryltriethanolamine, O - dicetyl -and O-dioleyl-triethanolamine and the citric acid salt of the latter, and examples of (b) are the condensation products of (i) palmitylamine and 3 ethylene oxide molecules, (ii) oleylamine and 5 ethylene oxides, (iii) the quaternary salt obtained therefrom by reaction by dimethyl sulphate, and (iv) the maleic acid salt of palmitylamine and 5 ethylene oxides. The mixture (a)\s4(b) is added to known synthetic washing-agents such as isopropanolamine fatty alkyl sulphate, a or mixture of fatty alcohol and its ether sulphate in an amount 1-12% by weight of the known washing-agent, to give a soap or detergent composition which may be solid, pasty, or liquid, e.g. powder or flake, and may be used as a shampoo.  Silicates, perborates and phosphates such as sodium tripolyphosphate, or tetrasodiumpyrophosphate and alkali salts of nitrilotriacetic acid or E.D.T.A. may also be included in the composition.ALSO:Cosmetic or toilet preparations having a mild cleansing action on the human skin comprise a conventional synthetic washing agent and a homogeneous mixture of (a) the mono- or di-ether derivative of a di- or tri-alkanolamine, respectively, wherein the ether alkyl radical is C10-C20, or a carboxylic acid salt thereof, and (b) the condensation product of a C10-C18 alkylamine and 1-8 molecules alkylene oxide, or a carboxylic acid salt thereof. Compound (a) and/or (b) if not a carboxylic acid salt may be quarternised with dialkyl sulphate.
Patent GB-1520027-A (GB)
Title: Processes for providing protective coatings on metal surfaces
IPC: B05D7/16
Filed: 1975-10-15
Abstract: 1520027 Tannin containing anti corrosion coatings PYRENE CHEMICAL SERVICES Ltd 15 Oct 1975 [25 Oct 1974] 42127/75 Heading B2E [Also in Division C3] Uncoated metal surfaces are provided with a corrosion-resistant coating, suitable as a base for the subsequent application of paint, by the application thereto of a substantially chromium - free aqueous composition comprising a melamine-formaldehyde resin and a vegetable tannin. The composition preferably contains at least 0.01 g/l of the resin and at least 0.01 g/l of tannin, at least one part by weight of resin being used per part by weight of tannin. Suitably the composition has a pH of from 6 to 9. Conductive materials such as pulverulent metals and conductive carbon may also be included in the compositions. Aluminium, zinc and ferrous surfaces may be treated.
Patent GB-1174636-A (GB)
Title: Shaft Seals
Inventor: WILKINSON SAMUEL CLIFFORD WALT
IPC: F04D29/14
Filed: 1967-09-15
Abstract: 1,174,636. Seals. CRANE PACKING Ltd. 16 Sept., 1968 [15 Sept., 1967], No. 42156/67. Heading F2B. A laminated ring 6 comprising the turns of a helix forms a flap valve type seal when the pump shaft 3 is at rest. The seal 6 may be made of P.T.F.E. and may be wound on to or off the shaft after loosening a support ring 8 which can either be screwed on the shaft or provided with grub screws. When the pump is operational, the seal is lifted from its seat 9 by centrifugal force.
Patent GB-1246477-A (GB)
Title: Compacting ores
Inventor: METZ PAUL
IPC: B30B11/18
Filed: 1968-09-05
Abstract: 1,246,477. Compacting ores. ARBED S.A. 5 Sept., 1968 [5 Sept., 1967], No. 42246/68. Heading B5A. Ores, with or without a binder or flux, are compacted for briquetting into a strip between an opposed pair of rollers having pressing surfaces defining continuously extending alternate grooves and ridges. The rollers 1, 2 may respectively be formed with opposed grooves 3 and ridges 4 and end walls 6 may be provided on one of the rollers. Each groove or ridge 3, 4 is defined between pointed, rounded or flat edges. The ridges and grooves may be in opposed staggered alignment, Fig. 2 (not shown), or the face of one roller may be plane, Fig. 3 (not shown). The compacted strip is subdivided into briquettes by a guillotine or by gravity impact, or by crushing.
Patent GB-1066588-A (GB)
Title: Improvements in a process for the production of alkali cellulose
IPC: C08B17/00
Filed: 1963-10-28
Abstract: Alkali metal cellulose is made by trituration of anhydrous powdered cellulose or small pieces of embrittled friable cellulose with approximately one equivalent of small-grain, dry caustic alkali to produce finely-divided "dry" alkali metal cellulose. The preferred starting material is cellulose lamellae, embrittled by rolling, especially under heat.  Desirably, the stoichiometric proportions of the substances to be reacted are not substantially exceeded. Preferably the moisture content of the powdered or embrittled cellulose is 1-10%, advantageously 3-5% and in particular about 4% with embrittled cellulose and 1-8%, especially about 2%, with cellulose in powder form.  By using dry air during trituration the moisture content of the alkali cellulose may be maintained at 15-30%, advantageously about 20%. Reaction of the cellulose with the caustic alkali may be effected in the presence of a gas, e.g. air, which is whirled through the substances, e.g. using a fluidized bed or flow mill or an air stream which whirls and conveys the two substances.