baber/WOPTO huggingface dataset:
Patent GB-616048-A (GB)
Title: Method of improving the transverse properties of oriented monofils
IPC: D02J13/00
Filed: 1946-08-22
Abstract: Oriented monofils of denier at least 83 and containing less than 0.5 per cent of moisture are exposed to a temperature considerably above the melting point of the synthetic linear polymer comprising the monofil for a time sufficient to disorient the surface portion but insufficient to affect appreciably the orientation of the core in order to improve the transverse properties of the monofil.  The heating may be carried out by passage through an electrically heated radiant tube or through a gas flame, molten metal or hot liquid.  The treatment is applied under enough tension to prevent shrinkage.  The monofil may be exposed to the atmosphere during its passage through the tube or to an inert gas.  For any given polymer there is an optimum temperature dependant upon the particular polymer, the size of the monofil, the size of the tube, the efficiency of the heat transfer and the rate of movement of the monofil.  In general, this temperature is, for any given set of conditions, 15 DEG  to 100 DEG C. below the lowest tube temperature at which the monofil will break by fusion.  The treatment may be applied to a partially drawn monofil whose skin is more highly oriented than its core. Suitable polymers include those containing the recurring group -NR-C : X-where R is hydrogen or a monovalent hydrocarbon radical, and X is oxygen or sulphur.  Such polymers are polyhexamethylene adipamide and sebacamide, polydecamethylene sebacamide, polymerized o-aminocaproic acid; the polyureas; polyamides prepared by reacting mono-amino-monohydric alcohols with dibasic carboxylic acids, e.g. that by reacting monoethanolamine and sebacic acid; polysulphonamides, e.g. that derived from decamethylenediamine and m-benzene-disulphonyl chloride; polyurethanes and polythiourethanes, e.g. that from decamethylene diisocyanate and decamethylene glycol; polythionamides, e.g. polydecamethylene thiourea; polyhydrazides, e.g. that from hydrazine and sebacic acid; and others such as vinyl chloride-vinyl acetate interpolymers; polymethylmethacrylate; polyvinyl chloride and chlorinated polyvinyl chloride; high molecular weight polyethylenes; vinyl chloride-vinylidene chloride copolymers; and acrylonitrile and copolymers thereof.  The improvement in transverse properties is measured by the knot tenacity and loop tenacity.  In an example a polyhexamethylene adipamide monofil (m.p. 265 DEG  C., 1258 denier, 0.2 per cent moisture content) is run through the centre of an open top radiant tube of "Inconel" (Registered Trade Mark) resistance metal maintained at 900 DEG  C. The knot tenacity increased from 1.9 to 3.1 grams per denier and the loop tenacity from 0.6 to 2.4 grams per denier.  Specifications 461,236, 549,452 and U.S.A. Specifications 2,201,172, 2,284,637, 2,321,890, and 2,321,891 are referred to.
Patent GB-950615-A (GB)
Title: Improvements in or relating to 20-(n-alkyl-n-halo-amino) steroids
Inventor: GEORGIAN VLASIOS
IPC: C07J75/00
Filed: 1960-09-02
Abstract: The invention comprises steroids of the formula: <FORM:0950615/C2/1> (wherein A is hydroxy, acyloxy or keto; Y is hydrogen, acyloxy or keto; R is hydrogen, hydroxy or acyloxy; R1 is hydrogen, hydroxy, acyloxy or methyl; R2 is hydrogen, fluoro, hydroxy, acyloxy or methyl; R3 is hydrogen or methyl; R4 is hydrogen or acyloxy; R5 is hydrogen or fluoro; at least one of Y, R, R1, R2, R4 and R5 being other than hydrogen when R3 is methyl; Z is an alkyl group of at most 6 carbon atoms; and W is fluorine, chlorine or bromine, the acyl radicals being derived from carboxylic acids of at most 6 carbon atoms) and their preparation from the corresponding 20-N-alkyl-amino-steroids and a halogenating agent. Examples are given.  20-(N-alkylamino)-pregnane starting materials are prepared by reductive amination of the corresponding 20-ketones.  6b -methyl -20a - methylamino -3b , 5a , 11a -triacetoxyallopregnane is prepared by acetylation of the triol.  20-Methylamino-3, 11-allopregnenedione is prepared by oxidation of the 3b -ol.  6a , 9a -difluoro -3b - hydroxy -11, 20- allopregnanedione is prepared by reducing 6a , 9a -difluoro -4- pregnene -3, 11, 20-trione to give 6a , 9a -difluoro -3, 11, 20-allopregnanetrione and then reducing this.  3b , 11b -diacetoxy -19-nor-20- allopregnanone is prepared by reducing 3b , 11b -dihydroxy-19- nor -4- pregnen -20- one and acetylating the resulting 3b , 11b -dihydroxy -19- nor -20- allopregnanone.  6b -fluoro -3b , 5a -diacetoxy -20- allopregnanone is prepared by acetylating the corresponding diol.  Specification 930,676 and 950,616 also are referred to.
Patent GB-589305-A (GB)
Title: Novel or improved indicating means
IPC: F16K37/00
Filed: 1944-12-16
Abstract: 589,305. Tooth epicyclic gearing. SCARF, C. T., and GOURLAY, J. Dec. 16, 1944, No. 25293. [Class 80 (i)] [Also in Groups XIX, XXIX and XL] . A handle B for setting a spindle A is keyed thereto and has bosses b and b<1> concentric with and eccentric to the spindle respectively. Internally and externally toothed wheels D and C are freely mounted on the bosses b and b<1> respectively. When the spindle is turned by the handle, the wheel C is prevented from turning by a slot c<2>, in an extension c<1> thereof engaging a stud e in a dial E and its teeth roll round within the teeth of the wheel D thus causing the latter to advance in proportion to the difference in the number of their teeth.
Patent GB-894399-A (GB)
Title: Stabilized crystalline polyaldehydes having 2í¬10 carbon atoms per monomer unit
IPC: C08G2/30
Filed: 1960-07-20
Abstract: A crystalline polyaldehyde, the aldehyde having 2 to 10 carbon atoms per molecule, and having at least one end of its polymer chain terminated by a hydroxyl group is esterified by heating with an anhydride of an organic carboxylic acid having 2 to 18 carbon atoms per molecule and a tertiary amine, preferably at 20 to 150 DEG  C.; alternatively the polyaldehyde may be etherified by heating with a hydrocarbon, a trialkyl orthocarboxylate and a strong acid catalyst preferably at 20 to 100 DEG  C.  Specified aldehydes are propionaldehyde, n- and isobutyraldehyde, n-valeraldehyde and n-heptaldehyde while acetic acid anhydride and propionic acid anhydride are anhydrides given in the examples.  Pyridine is the preferred amine.  For the etherification, any Lewis acid may be used as the catalyst, e.g. Friedel-Crafts type, boron trifluoride-etherate being preferred, while the trimethyl orthoformate, orthoacetate, orthopropionate, orthobutyrate, and orthovalerates or their triethyl, tripropyl and tributyl derivatives are specified orthoesters. Specification 870,775 is referred to.
Patent GB-669600-A (GB)
Title: Improvements in and relating to waterproof cements
IPC: C04B26/32
Filed: 1949-10-04
Abstract: A waterproof cement composition which sets at room temperature comprises liquid methyl polysiloxanes made according to Specification 661,737, a filler in proportion sufficient to make the composition a thick paste and lead or lithium acetate, stearate or phenate, in amount e.g. of 0.1 to 5.0 per cent by weight of the polysiloxanes. Fillers specified are lead monoxide, barium sulphate, calcium carbonate, silica and asbestos powder, separately or in admixture. The polysiloxanes may be mixed with the filler to form a thick paste and the organic metal derivative may then be added, or a mixture of the filler and the organic metal derivative may be incorporated in the polysiloxanes.  In the example, a benzene solution of a mixture of lead phenate and stearate is added to a mixture of barium sulphate and the polysiloxanes.  The compositions may be used as insulating cements for sealing, coating electrical parts, covering existing cements and for application to paper, cardboard and woven fabrics. Specification 15050/48 (as open to inspection under Sect. 91), is referred to.
Patent GB-1223320-A (GB)
Title: Modified polyurethane resins
Inventor: SUZUKI TOSHIO
IPC: C08G18/10
Filed: 1968-05-28
Abstract: 1,223,320. Polyurethanes. NISSINBOSEKI K.K. 28 May, 1968, No. 25506/68. Heading C3R. [Also in Division B2] Ureido-terminated polyurethanes are prepared by reacting an isocyanate-terminated prepolymer with a mono(hydroxyalkyl) or mono- (hydroxyaralkyl) derivative of urea. The prepolymer is prepared in a conventional manner by reaction of a stoichiometric excess of a polyisocyanate with, for example, a polyether or polyester polyol. Suitable urea derivatives are N-beta-hydroxyethylurea, N-isopropylolurea, N - isobutylolurea, N - (p - hydroxymethyl) phenylurea and N - gamma - hydroxypropylurea. The reaction is suitably carried out in an inert solvent. The ureido-terminated polyurethanes are used to internally plasticize phenolic and amino resins. Preferably, the amino and/or phenolic compounds are condensed with aldehydes in the presence of the ureido-terminated polyurethanes. Suitable phenolic compounds are phenol, cresol, xylenol, resorcinol, and p,p<SP>1</SP>-dihydroxydiphenyl propane and suitable amino compounds are urea, thiourea, melamine, benzoguanamine, acetoguanamine, formoguanamine and dicyandiamide. The preferred aldehyde is formaldehyde.
Patent GB-1386991-A (GB)
Title: Electric cable
IPC: H01B3/44
Filed: 1972-05-31
Abstract: 1386991 Coaxial cables PHILLIPS PETROLEUM CO 31 May 1972 [1 June 1971] 25518/72 Heading H1A The frequency bandwidth of a suboceanic transmission cable is increased by use of a dielectric material with decreased dissipation factor, together with an anti-oxidant agent. The operating frequency of a coaxial cable can be at 30 UHz and higher using a dielectric composed of a copolymer of ethylene and at least one 1-olefin having at least 3 carbon atoms per molecule, e.g. 1-butene, 1-hexene, 1-octene &c., the copolymerization being carried out with the aid of an oxide of, e.g. silica, alumina, zirconia, thioria, plus chromium oxide, the combination acting as a catalyst. The copolymer is mixed with an anti-oxidant agent, e.g. 2,6-di-tert.-butyl-p-cresol or 1,3,5- trimethyl - 2,4,6 - tris - (3,5 - di - tert. - butyl - 4- hydroxybenzyl)benzene. The properties of the copolymer are ranged as: density 0À928-0À945 gm./cc., dielectric constant less than 2À325, dielectric dissipation factor not more than 55 micro-radians at 30 MHz and environmental stress cracking resistance of at least 800 hours. Examples of tests done on dielectric material according to the invention are given and tables are disclosed of the results thereof.
Patent GB-380591-A (GB)
Title: Apparatus for manufacturing hollow articles, closed on all sides, by means of line presses
IPC: B28B3/26
Filed: 1931-09-14
Abstract: 380,591. Extruding hollow bricks. SUPTHUT, H., (trading as SCHœLKE, W.), 4, Viktoriastrasse, Liegnitz, and THOMAS, P., 50, Leinestrasse, Neuk÷lln, Berlin, both in Germany. Sept. 14, 1931, No. 25729. Convention date, July 20. [Class 87 (ii).] Hollow articles closed on all sides are formed by arranging a core in the mouthpiece of an extrusion press so that the internal cross-sectional area between the mouth-piece walls and the core at the pressing point is variable, and in addition providing a mouth-piece of uniform cross section behind the pressing-point, the area of which is equal to the cross section of the pressing chamber at its greatest contraction. Fig. 1 shows one arrangement in which adjustable slides 5 are fitted at the front of the reduced mouthpiece 1 opposite the core 4 and an extension 3 of the same dimensions as the space between the slides 5 in their innermost position, extends forwardly of the core. When the slides are pushed inwardly a hollow article is formed, but when they are withdrawn a solid article is produced. In Fig. 2 a double-conical core 6 is moved axially between the positions shown in full and dotted lines. In the full-line position the narrowing of the area between the core and walls at the pressing-point produces hollow articles, whereas in the dotted-line position solid articles are produced. In other constructions in which the area is varied by axial movement of the core, a sleeve is moved axially on a fixed core member, and a series of filling-pieces moved axially in grooves on the core member. The movement of the slides, Fig. 1, can be effected in unison with the cutting-means operating outside the machine in order to secure cutting at the correct position.
Patent GB-759231-A (GB)
Title: Improvements in or relating to methods of manufacturing sintered permanent magnets
IPC: C04B35/26
Filed: 1954-09-06
Abstract: 759,231. Magnetic structures. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 6, 1954 [Sept. 9, 1953], No. 25807/54. Class 38 (2) . A sintered permanent magnet having anisotropic magnetic properties, made by a process including the step of moulding finely-divided particles of suitable material, either dry or suspended in a liquid, in a magnetic field, is demagnetized before sintering, at least in part, whereby likelihood of damage due to the relatively fragile bodies colliding from mutual attraction is reduced. The demagnetization should preferably be carried out by reversing the premagnetizing current when the moulding pressure is at its maximum, and bringing the demagnetizing field to a value equal to the field strength of disappearance of magnetization ( I Ho) of the material. The material consists of non-cubic crystals of polyoxides of iron and one or more of Ba, Sr, Pb, part of which may be substituted by Ca, having a constitution represented by Me0,6Fe 2 0 3 , where Me represents Ba, Sr, Pb. A suitable material is that forming the subject-matter of Specification 708,127.
Patent GB-1384426-A (GB)
Title: Silo unloaders
IPC: B65G65/38
Filed: 1972-06-02
Abstract: 1384426 Silo top unloader D F BROOKES 1 June 1973 [2 June 1972] 25813/72 Heading B8E A silo top unloader comprises a rotatable collecting boom 10 having a vertical guide wheel 33 and wheels 29 drivingly engaging the silo wall. An arm 31 extends from a hollow column 11 on the other side to the boom and has a spring urged wheel 30 engaging the silo wall to keep driving pressure between the wheels 29 and the silo wall. A discharge boom 14 having a conveyer belt 40 driven by a motor 41 is inclinable by a winch 15 and is pivotally broken at 42 so that its discharge end can be extended through a suitably positioned opening in the silo wall. An elevator auger 24 connects the output end of the boom 10 to the input end of the boom 14 and is driven by a motor 13 through belts 25. Conveyer claws 19, 27 provided with teeth 22 are driven from a sprocket wheel 26 on the end of the auger 24 and provide the drive to the wheels 29 through reduction gearing 28. If the collecting boom 10 or elevator 24 becomes blocked the motor 13 will be stopped by an overload device while the conveyer 40 continues to run until the current to both motors is cut. Means are provided to reverse the motor 13 thereafter to feed the blocking material back into silo until the blockage is cleared. In a modification the motors 13, 41 are separately controlled so that 41 can continue to run after 13 has been stopped and can be independently reversed.
Patent GB-153286-A (GB)
Title: Improvements in carburettors for internal combustion engines
IPC: F02M3/12
Filed: 1920-09-08
Abstract: 153,286. Holley, G. M. Oct. 27, 1919, [Convention date]. Spray carburettors.-In a carburettor having a through passage of Venturi form and extensions E, F, to the latter of which the float chamber L is attached, a bore G of the extension F having mounted therein the nozzle J, the top being slightly below the fuel level maintained by the annular float, mixture is formed in the bore G by air admitted through a passage V open to the atmosphere. The fuel overflows and forms a reserve in the bore G and passage V for starting. A needle valve carried by the extension E is used to regulate the fuel supply. A by-pass leads from the bore G to two ports X, Y; the throttle lies between these ports when it is closed, so that when slow-running mixture is drawn from the bore G through the by-pass and port Y, a slight amount of air is also drawn in through the port X. The main air may be heated so that this slight amount may also be hot.
Patent GB-759980-A (GB)
Title: Load lifting clamp
IPC: B66C1/64
Filed: 1954-09-09
Abstract: 759,980. Screw clamps for lifting articles. REFROE & SONS, Inc., J.C. Sept. 9, 1954 [April 20, 1954], No. 26102/54. Class 78(4). A screw clamp for lifting beams and plates is secured to the hoisting hook by means of a swivel 38. As illustrated, the swivel 38 is carried on a plain portion 26 of the screw 24 and is located between a head 32 formed with holes 34 for the reception of a tommybar and a nut 28 providedwith a locking screw 30. A shackle 44 for attachment to the lifting hook passes through a hole 42 in the swivel 38. The fixed jaw 46 is rectangular in shape and takes into a corresponding recess 50 in the clamp body 12, 16, being further located by a circular projection 75 taking into a corresponding recess. When a screw 52 securing the fixed jaw 46 has been loosened, the jaw may be lifted and turned through a right angle to alter the direction of load-engaging ribs with which it is formed. The screw jaw 22 is formed with a circular loadengaging surface 36.
Patent GB-264574-A (GB)
Title: Improvements in apparatus for drawing textile fibres
IPC: D01H5/24
Filed: 1925-10-19
Abstract: 264,574. Laurency, G. C. Oct. 19, 1925. Drawing-frames.-In the drawing of fibres, one or more pairs of toothed rollers adapted to retain the fibres without direct compression are combined with a finely fluted drawing-cylinder F, Fig. 2, and a segment G, which partly surrounds the cylinder and is held against it by adjustable spring means. The toothed rollers A. B are provided at the ends with leather &c. rings A', B<1>, which rest on collars C<1> on a long intermediate driving cylinder C. The upper rollers D, E rest on the rollers A, B and are driven thereby. The segment G is provided at its centre with a pivot pin F<1>, which rests on a plate spring H, which serves two segments and can be adjusted by screws J. The roving passes to the rollers through a reciprocating guide L carried by a bar K, which receives its motion from a crank, in such a manner as to have a period of rest at each end of its course. The roving has imparted to it in its passage an undulating movement and the speed of reciprocation of the guide L is regulated in accordance with the length of the fibres. For long fibres the intermediate rollers A, D, B, E may be further apart and additional pairs may be provided. The segment G may be situated above the drawing cylinder F. The top roller E, Fig. 5, rests on the lower roller on a level with the tops of the teeth c formed on the lower roller. The upper roller may also be provided with teeth which pass between the teeth on the lower roller without contacting therewith. The upper roller may be dispensed with and the teeth on the roller A, Fig. 7 inclined backwards, the roving R<1> passing round the roller A to the drawing cylinder F and segment G.
Patent GB-632543-A (GB)
Title: Improvements in and relating to sensitive photographic emulsions
IPC: G03C1/08
Filed: 1947-09-27
Abstract: 632,543. Photographic emulsions. CHRISTENSEN, J. H. Sept. 27, 1947, No. 26212. [Class 98 (ii)] The gradation obtainable in a photographic silver halide emulsion is increased by incorporating therein a water-soluble cobalticyanide, e.g. potassium cobalticyanide. The cobalticyanide may be included in an amount less than 0.1 per cent of the wet emulsion, and the amount may be less than 0.01 per cent. The silver halide is preferably predominantly silver chloride. An aqueous solution of the cobalticyanide may be added.before, during, or after digestion of the emulsion, and may be added in several portions at intervals. In an example, to an aqueous solution of gelatin containing acetic acid are added aqueous solutions of silver nitrate and of ammonium chloride, zinc acetate, and acetic acid, the addition being effected so that the chloride is always in excess. The emulsion is maintained at 48 to 49 C. for 60 to 80 minutes, a solution of potassium cobalticyanide is added, and the emulsion is further digested for 30 minutes. The emulsion may be washed or unwashed, and chrome alum, saponin, cupric salts, or citrates may be added. An aqueous gelatin solution containing potassium bromide or iodide may be added to the emulsion.
Patent GB-1043136-A (GB)
Title: Improvements in and relating to glass sheets
IPC: C03B27/044
Filed: 1964-06-25
Abstract: <PICT:1043136/C1/1> In the manufacture of curved glass sheets, a flat sheet is supported by its marginal edges on a shaping surface of the desired outline shape of the finished sheet and heating it to softening temperature, a heated fluid (air) is applied upwardly to its undersurface to prevent transverse sagging. The sheet is supported in a carrier 66 transported through the preheat zone 28 of a furnace to the bending zone where heated fluid is discharged from nozzles 70 at a pressure sufficient to provide an upward force less than the weight of the sheet.  Heating is effected by elements arranged in rows and columns along the length of the furnace some of which are more intensely heated than others in order to cause sharp bending where non-uniform curvature is required. The tempering station 12 has plenum chambers 42, 44 provided with slot-type nozzles 46, 48 curved across the station so that the curved sheet passes between.
Patent GB-848665-A (GB)
Title: Improvements relating to spring clip fasteners
Inventor: THOMAS BASIL ARNOLD
IPC: F16B5/12
Filed: 1955-09-14
Abstract: 848,665. Supporting building-panels; glazing. BAST GLAZING CLIPS Ltd. Sept. 12, 1956 [Sept. 14. 1955], No. 26361/55. Classes 20(3) and 20(4) [Also in Group XXV] A clip for securing building-panels to a support or a glass-engaging member to a glazing- bar, comprises a hook-part 4 to engage the wall of a support or bar 3 and a part 2b having spaced arms with inwardly bent parts 5 in which barbs 7 of a member 1 engage. For securing panels, the member 1 is fixed by its web to the panels and is then snapped over a number of the clips which are hooked to the support 3. For glazing, clips are hooked to the bar 3 and member 1 is snapped thereon to bear on the glass and hold it in position.
Patent GB-735885-A (GB)
Title: Improvements in or relating to the production of benzene carboxylic acids from carbonaceous material
IPC: C07C51/27
Filed: 1952-10-21
Abstract: Carbonaceous material is converted into benzene carboxylic acids by preparing a pulp of solid powdered mineral combustibles capable of being pumped, containing the said material and nitric acid with carboxylic acids formed during the oxidizing treatment, and pumping this in counter-current to oxygen and oxygen-containing gases, continuously removing some of the products.  In an example, pulverized coal is mixed with nitric acid and heated in an autoclave with added steam, cooled where necessary, and cold oxygen-containing gas is introduced.  The oxidized product is tapped off continuously as the pulp is added. The products contain benzene tri- and tetracarboxylic acids, pento- and hexacarboxylic acids, tri-nitro-phenol and high molecular products.  A drawing of suitable plant is given.
Patent GB-479212-A (GB)
Title: Fluted bars for general industrial supporting uses such as strata supports in mines,and beams
IPC: E21D17/01
Filed: 1936-09-30
Abstract: 479,212. Metal bars. RICHARDS, F. Sept. 30, 1936, No. 26465. [Class 20 (ii)] A corrugated metal bar, for use as a roof support in mines or other purposes, has flutes 1, 2, of semicircular, gothic, or other radiused or elliptical shape. Each individual corrugation of the bar thus formed, consists of top and bottom flanges 5 and webs 6 which progressively decrease in thickness from the flanges to the neutral axis. The bars may be produced by moulding, casting, pressing, or rolling, and may consist of a number of corrugations or of a single corrugation such as that shown crosshatched on the right-hand side of the drawing. The surfaces 10 between the flutes may be flat, concave, or convex. Specification 355,244 is referred to.