baber/WOPTO huggingface dataset:
Patent GB-130653-A (GB)
Title: Improvements relating to Parachutes.
Inventor: BOYLE EDWIN
IPC: B64D17/52
Filed: 1918-03-01
Abstract: 130,653. Boyle, R., (Representative of Boyle, E.), and Reeves, H. K.. March 1, 1918. Parachutes.-One or more parachutes in their casings are housed in a space in the fuselage and are supported by breakable or removable struts 9 or doors. The supporting-rope 11 is connected to the struts 9 so as to release the parachute in its casing before any tension comes on the parachute. When the attachment rope 16 of the casing is fully extended, the parachute is released. A single parachute is packed obliquely as shown in Fig. 1; but two parachutes arepacked side to side to be separately detached,. the pilot's being the last to be detached and having a longer rope connected to the casing.
Patent GB-738850-A (GB)
Title: Improvements in or relating to the manufacture of photo-electric sensitive or secondary electron emissive surfaces
Inventor: SOMMER ALFRED HERMANN
IPC: H01J9/12
Filed: 1953-02-10
Abstract: In one modification of a method whereby successive bismuth and silver layers aare deposited on a cathode by evaporation, this is done from a single source of an alloy of silver and bismuth, preferably in equal parts.  In another modificaiton to the step whereby the bismuth is oxidized through the silver layer by simple exposure to oxygen this is carried out above room temperaature, for example 150 DEG C. The bismuth layer may be five to ten atoms thick, or alternatively be so thick as to be opaque, and it may be deposited on a glass envelope.  After oxidaation caesium may be deposited on the silver.
Patent GB-111962-A (GB)
Title: Improvements in Gas Meters.
IPC: G01F3/30
Filed: 1917-03-14
Abstract: 111,962. South Metropolitan Gas Co., and Somerville, J. M. March 14, 1917. Gas meters.-Relates to means, in wet gas meters, for delivery of a constant mass of gas in unit time, independently of variations in atmospheric temperature and pressure. The speed of rotation of the drum is kept constant by a suitable escapement mechanism. A vessel b, the upper part e of which forms an aneroid, is connected by passages c, d to the gas and water regions respectively of the meter a. The lower movable surface of the aneroid e is connected bv a rod h to a submerged expansible chamber f open to the atmosphere. Increase of atmospheric pressure or lowering of temperature causes the upper part of the chamber f to rise, so increasing its volume and raising the level of the water in the meter a, thus reducing the volume of gas delivered.
Patent GB-938420-A (GB)
Title: Isoxazole derivatives and production thereof
IPC: C07D261/18
Filed: 1962-01-31
Abstract: The invention comprises isoxazoles of the general formula <FORM:0938420/IV(a)/1> wherein R is a C1-8 alkyl group and R1 and R11 are the same or different and each represent a hydrogen atom, a C1-8 alkyl group or a phenyl group, or, when linked together with the adjacent carbon atom, a C5 or C6 cycloalkyl group; and of the general formula <FORM:0938420/IV(a)/2> wherein R1 and R11 are the same or different and each represents a hydrogen atom a methyl group or a phenyl group, or, when linked together with the adjacent carbon atom, a cyclohexyl group, and the preparation of the hydrazides by either reacting a hydrazide of the formula <FORM:0938420/IV(a)/3> with R1R11CO and reducing the resulting hydrazone or by reacting a compound of the formula <FORM:0938420/IV(a)/4> (wherein X is a C1-8 alkoxy group) with a hydrazine R1R11CHNHNH2.
Patent GB-464458-A (GB)
Title: Improvements in or relating to gas masks
IPC: A62B18/08
Filed: 1936-02-07
Abstract: 464,458. Gas-masks. PINELLI, V. Feb. 7, 1936, No. 3814. [Class 81 (ii)] A gas-mask 1 is provided with an exhaling valve 8 set immediately opposite the mouth in a fitting through which speech is readily transmitted and comprising a sound-collecting mouthpiece 13 fitting approximately air-tightly around the mouth, and a sound-delivery duct 9 provided internally with concentric sounddirecting rings 11. The mask has a flanged portion 2 into which is fitted a sleeve 3 screwthreadedly holding a valve casing 4. The valve 8 is of the kind described in Specification 353,380, [Group XXIX], and is held by its flanged base between an internal flange 7 on the casing 4 and the sleeve 9 screwed into the casing at 10. The casing 4 has an external flange 5 bearing on the sleeve 3 with interposed packing 6. The mouthpiece 13 is of rubber and the rings 11 are secured in the duct 9 by rods 12. The valve 8 may constitute or be additional to the normal exhaling valve. An inlet valve 14 is secured in a separate tubular fitting 15. In a modification, the sleeve 9 is made longer to house a valve of the flutter type secured to a tubular fitting having a flange secured similarly to that of the valve 8. In a further modification, the outer end of the sleeve 9, instead of being flared as shown, is contracted and made to open in an upward direction for ready transmission of speech to a telephone transmitter. The parts 4 and 9 may be replaced by a short valve casing screwed into the sleeve 3 from the outer side of the mask and a short valve-retaining sleeve closed at its outer end and having a ring of apertures in its cylindrical surface, thereby converting the mask into one for ordinary use.
Patent GB-158797-A (GB)
Title: Improvements in and relating to grabs
IPC: B66C3/06
Filed: 1920-02-07
Abstract: 158,797. Barnard, D. J. Feb. 7, 1920. Addition to 10153/15. Grab-buckets.-Comprises improvements in or modifications of the grab described in the parent Specification. The grab-buckets therein described are opened to discharge by the relative downward movement of the lower set of sheaves of a pulley-tackle carried by the grab, while the initial downward movement of the sheaves liberates gravity-actuated locking-catches which maintain the grab bucket in the closed position during hoisting. The present invention consists in giving an initial downward impulse to the lower set of sheaves, through the agency of springs, thereby ensuring the disengagement of the catches in cases where the grab is so close to the crane jib that the weight of hanging chain does not assist the weight of the sheaves sufficiently to release the catches. Thus, in the operation of closing the grab, the upward movement of the frame 10. Fig. 2, carrying the movable sheaves 11, raises spring plungers 7 bodily and compresses the springs against brackets 2. When the hoisting-chain is slackened, the spring plungers impart sufficient downward movement to the frame to release the catches.
Patent GB-285058-A (GB)
Title: Manufacture of coloured varnishes
IPC: C08K5/23
Filed: 1928-02-07
Abstract: 285,058. Soc. of Chemical Industry in Basle. Feb. 10, 1927, [Convention date]. Varnishes.-Coloured varnishes fast to light are made by employing as colouring agents monoazo dyes obtained by coupling negativelysubstituted unsulphonated diazo compounds with substituted or unsubstituted amines coupling in the p-position to the amino group. In examples, (1) the dyestuff obtained by coupling diazotized p-nitraniline with cresidine is dissolved in a nitrocellulose varnish: the,product gives a transparent. scarlet-red coating when applied to supports, e.g. metal, glass, leather, wood, celluloid or silk. or by incorporating suitable additions in the varnish an opague coating may be obtained, and (2) a nitrocellulose solution is mixed with a solution of 4-nitro-4<1>-aminoazobenzene in acetone; the product gives orange-red coatings. Similar results may be obtained in the case of varnishes from acetyl celulose or from phenol-aldehyde condensation products; in the latter case the dyeings withstand the various hardening operations. Yellow varnishes are obtained with 2 : 5 - dichlor-4<1>- aminoazobenzene or 2 : 5-dichlor-4<1>-amino-3<1>-methylazobenzene, orange with 3-nitro-4<1>-aminoazobenzene, scarlet-red with 4-nitro-4<1>-amino-2<1>-acetylaminoazobenzene, and blue-red with 4-nitro-2- methoxy-4<1>-dialkylaminoazobenzene. The dyestuffs from unsulphonated negatively-substituted diazo compounds and diphenylamines, and benzyl-, ethylbenzyl- or dibenzylaniline are also suitable.
Patent GB-469682-A (GB)
Title: Improvements in or relating to windows
IPC: E06B7/26
Filed: 1936-02-08
Abstract: 469,682. Casement windows. HEY, C. T., and MURFIN, B. A. Feb. 8, 1936, No. 3876. [Class 20 (iii)] A casement sash is provided with a thin peripheral flange 4 which bears against the vertical face of a rabbet 2 in the front of the frame 1, the depth of the rabbet being approximately one-third of the thickness of the frame, so that the front face of the sash is well behind that of the frame, and wide concave drainage grooves 2x are formed in the side faces of the rabbet which extend in front of the top and side frame members of the casement. The grooves extend throughout almost the full width of the sides of the rabbet and along the whole lengths thereof. The rear of the sash bears against the vertical face of a second rabbet 8 in the frame and the usual weather-excluding grooves 9, 10 are formed in the peripheral edges of the sash and in the side faces of the rab - bet 8. The rearwardly extending faces of the sash are stepped or inclined to. obviate capillary action. Specification 444,601 is referred to.
Patent GB-699168-A (GB)
Title: Improvements in liquid filters
Filed: 1952-02-14
Abstract: 699,168. Filters. BOSCH GES., R. Feb. 14, 1952 [Feb. 15, 1951], No..3921/52. Class 46 In a filter eiement consisting of strips of filter material, e.g. filter paper, which are wound around a core to form a spiral with a certain clearance space between the strips, such spaces being so sealed at opposite ends of the element that liquid supplied at one end flows axially into certain of the intermediate spaces,. through the strips of filter material into the remaining spaces and then out at the opposite end, the clearance space between the strips of filter material and the seals at the end faces and at the edges of the strips are formed solely by shaping the strips of filter materials A strip 1 of filter paper, Fig. 1, has semi-spherical indentations 2 formed in its surface and tongues 7 along one edge which are folded over to provide between them outlet spaces 17. The opposite edge is folded over at 3 to prevent egress of liquid there. A second strip 8 has more pronounced indentations 9, one edge 11 formed with slots 12 and folded first inwards and then outwards, and the other edge 10 folded first inwards and then outwards. The outer part 13 of the edge 11 projects beyond the inner edge of the slot 12 after folding, .leaving inlet slots 16. The two strips are wound ..spirally about a metal tube 15 with sealed ends and the outermost windings 18 of the strips 1 and 8 are wider so as to project laterally beyond the coil, Fig. 2. The complete element is enclosed in a cylinder 19 to which the bottom part of the winding 18 is connected and to a disc 20 by a beading 21. At the outer end the windings 18 the cylinder 19 and a ring 22 are firmly connected by an annular groove 23. A further disc 24 is seamed to :the cylinder 19. An inlet 27.and outlet 28 are provided. Impurities deposited from the liquid being filtered, e.g. liquid fuel for Diesel engines, accumulate in the spaces 29 (between the outer surface of strip 1 and inner surface of strip 8) which are larger by reason of the larger indentations 9 than the outlet spaces 30; larger particles drop through the openings 16 on to a disc 20. The indentations may take the form of grooves set obliquely in the strip, the grooves of one strip intersecting -those of the other. Instead of indentations and folds, the strips may have areas of increased thickness at their edges and rib-like thickenings extending across them. The strength of  the paper may be increased by addition of asbestos, or by impregnating with a lacquer so diluted as to glue the individual fibres without closing the pores of the paper. The tips of the indentations may also be separately laquered. Specification 693,495 is referred to.
Patent GB-117051-A (GB)
Title: Improvements in and relating to Chain-driven Conveyor Apparatus.
IPC: B66B29/00
Filed: 1918-03-06
Abstract: 117,051. Waygood-Otis, Ltd., (Otis Elevator Cc.). March 6,1918. Moving stairways, platforms and the like; stopping on breakage of chains.-Chain-driven conveyers, moving stairways, &c., are provided with an automatic electrical stop gear which stops the apparatus when the driving chain breaks. Underneath and parallel to the working run of the driving chain 1 are mounted two electro-conductive strips 7 mounted on suitably supported insulating strips 8. The conductive strips are in circuit with the electro-motor driving mechanism for the driving sprocket 6 and, when a link of the driving chain breaks, the broken halves drop downwards so that the cross pins 3 come in contact with the conductive strips and energize an electro-magnet which breaks the circuit of a cutout switch, so stopping the current supply to the motor and at the same time applying a brake. In a modification, a single conductor strip is employed, the circuit being completed through the driving chain.
Patent GB-861405-A (GB)
Title: Improvements relating to coated abrasive sheets
IPC: C08L9/00
Filed: 1959-02-04
Abstract: 861,405. Coated fabrics. NORTON CO. Feb. 4, 1959 [Feb. 27, 1958], No. 3992/59. Class 140. [Also in Group XXIII] A backing for use in the manufacture of coated abrasive sheets comprises a fibrous backing-member, e.g. cloth, coated with a thermoplastic elastomer which is a terpolymer of styrene, butadiene and acrylonitrile, and a film-forming thermosetting resin which is compatible with said terpolymer. The terpolymer and thermosetting resin may be mixed and applied as a single coating to the backing member or the terpolymer may be applied first and the thermosetting resin or a mixture of the ter-  polymer and thermosetting resin subsequently applied thereover. The thermosetting resin may be a phenol-aldehyde, a urea-aldehyde as in U.S.A. Specification 2,534,806, a hardened epoxy, an alkyd or a polyamide resin. The terpolymer may be that of U.S.A. Specification 2,384,543 and may be mixed with an additional small amount of polystyrene. Specifications 510,328 and 576,308 also are referred to.
Patent GB-100810-A (GB)
Title: Improvements in Air Compressors.
IPC: F04B39/08
Filed: 1916-03-17
Abstract: 100,810. Reavell & Co., and Reavelt, W. March 17, 1916. Compound or multi-stage piston pumps; heat of compression, absorbing; valves, arrangement of.- A two-stage compressor in which the cylinders are spaced apart and oppositely-disposed is provided with a solid piston formed in one piece and of two diameters and having between the cylinders a gudgeon pin the ends of which are provided with rods or straps which embrace eccentrics fixed on a driving-shaft; the valves are arranged to be easily accessible, and the air-pipe leading from the first to the second stage cylinder is cooled by enclosure within a water jacket. In the apparatus shewn, the pedestal is formed with bearings for the main shaft 3, and with a recess 4 constituting the lower cylinder head and communicating with other recesses also formed in the pedestal and containing the suction and delivery valves 5, 6. An outer casing 7 bolted to the pedestal forms a water jacket and holds in place a liner 8 which is bored to form the two cylinders 9, 10. A cover 12 contains the second-stage cylinder valves. A pipe 15 passing through the water space connects the delivery valve 6 of the lower cylinder with the suction valve of the upper one. The ends of the pistons are provided with packing-rings 18, 19 held in place by junk-rings 20, 21. A gudgeon pin 22 passes through the larger diameter of the piston and is screwed therein, and.arms on the eccentric straps 25 are secured to the ends of the gudgeon pin. The water space is provided with feed and drain plugs 28, 29, and a sight-feed lubricator 30 is provided. The low-pressure delivery and the high-pressure valves, and their seats, plugs, and caps, are interchangeable.
Patent GB-547201-A (GB)
Title: Improvements in or relating to machines for cutting pliable sheet material
IPC: D06H7/04
Filed: 1941-03-26
Abstract: 547,201. Cutting machines. NEWMAN, W. W. March 26, 1941, No. 4093. [Class 31 (i)] A paper, fabric &c. web passing from a feed roll spindle 18 to a take-up roll spindle 22 is slit longitudinally by blades 28 on a holder bar 26 reciprocated along guides 32 by connecting rods 64 and cranks 62 driven by a gear 60, idler 58 and gear 54 provided with a crank handle which gear 54 is on the shaft of the press roll 24. The end of the take-up spindle 22 remote from gear 54 carries a gear 66 engaging an idler 68 gearing with a wheel 70 co-operating by an interposed friction clutch 74 with a gear 72 which meshes with a gear 76 on the shaft of the press roll 24. The take-up roll spindle 22 is carried in brackets such as 38 pivoting about the shaft 46.
Patent GB-1425632-A (GB)
Title: Device for producing a continuous dough strip
IPC: A21C11/18
Filed: 1973-01-26
Abstract: 1425632 Extruding dough K KEMPER 26 Jan 1973 [28 Jan 1972] 4178/73 Heading B5A Dough is intermittently extruded as a continuous strip, from an outlet 21 of the cylinder 7 of a reciprocating piston extruder 1 in which, upstream of the outlet 21, a transversely displaceable knife 6 closes and opens the cylinder 7, respectively during retraction and advancement of the piston 9, and the inlet to the cylinder 7 from a dough hopper 4 is closed by a further knife 5 during advancement of the piston 9. The piston 9 is reciprocated from a crank 15 by a connection rod to a lever 11, which is pivoted at one end 12 and to the other end of which the piston-rod 13 is secured at holes 17, permitting adjustment of the displacement of piston 9. The knife 5 is reciprocated with the piston 9 by a connection 10 to the lever 11, and the knife 6 is reciprocated from the crank 15 by a connection rod 14 having pivot and slot connections intermediate its ends, and to the knife 6. The vertical extent of outlet 21 is adjustable by a pivotable flap 19. The extruding dough is conveyed from the outlet 21 to a dough dividing and circular kneading device 2, by a conveyer 22 driven in synchronization with the piston 15 by a connection 23, and adjustably spaced apart and barrel shaped smoothing rollers 25, 26 and the lower 25 of which is drivingly coupled to a further conveyer 24, synchronized with the device 2. The height of the dough upstream of rollers 25, 26 is measured by a scanner 28, an electrical signal from which causes cessation of the drive to the piston and conveyer 9, 22 when the height is too great, and recommencement thereof when the height has been reduced by continued operation of rollers 25, 26 and conveyer 24.
Patent GB-1206007-A (GB)
Title: Devices for separating a liquid and/or a vapour from a flowing carrier gas stream
IPC: B01J35/02
Filed: 1968-01-26
Abstract: 1,206,007. Dehumidifying device. SWISS CONFEDERATION DEFENCE FEDERAL MINISTER OF. 26 Jan., 1968 [26 Jan., 1967], No. 4259/68. Heading B1L. A dehumidifier of particular application in aircraft comprises a tube 1, detachable into sections 3-8, into which moist gas flows at 2 and which dehumidified gas leaves at 9. The linearly flowing stream passes over element 10 which suitably comprises a stainless steel mesh which may be coated, for example, with silver iodide. The shock pressure change created in the gas stream during its passage through element 10 causes its temperature to fall and droplets to nucleate. The entrained drops then pass over fixed screw element 11 of rapidly decreasing pitch which imparts a rotational component to the gas flow about the axis of flow and forces the droplets outwards to the walls of the tube where the stream passes substantially at right angles over slots 13, the droplets passing through into jacket 14 and being run off through restricted outlet 15. The rotation of the gas stream is removed by passage over fixed screw element 12, which is identical with screw 11 in configuration but is seated in the opposite sense. If preferred, element 12 may be replaced by a tangential evolute to produce a linearly flowing stream at right angles to the original axis of flow (see Fig. 4 not shown).
Patent GB-735665-A (GB)
Title: Improvements in or relating to the preparation of 1-phenyl-2-amino-1:3-dihydroxypropane and its derivatives
Filed: 1953-02-16
Abstract: 1-Phenyl- and 1-nitrophenyl-2-amino-1 : 3-dihydroxypropanes are manufactured by reacting a compound of the general formula <FORM:0735665/IV (b)/1> (wherein X represents hydrogen or a nitro group, and Y and Z represent alkyl, aralkyl, cycloalkyl or aryl residues) with ammonia to replace the halogen atom by an amino group, and subjecting the resulting aminodiol diether to acid hydrolysis. Alternatively, when starting with a compound unsubstituted in the phenyl residue, a nitro group may be introduced into the para-position therein by nitrating the aminodiol diether (if necessary after protection of the amino group by acylation or Schiff's base formation) prior to the acid hydrolysis. Resolution into optically active stereoisomers may also be effected at the aminodiol diether stage.  In examples (1) ammonia is dissolved in a cooled solution of threo - 1 - phenyl - 2 - bromo - 1 : 3-dimethoxypropane in alcohol and the mixture is then heated under pressure with a trace of potassium iodide to produce 1-phenyl-2-amino-1 : 3-dimethoxypropane (which may be identified by conversion into its benzoic acid salt or by N-p-nitrobenzoylation with p-nitrobenzoyl chloride in the presence of caustic alkali); demethylation is then effected by heating with aqueous hydrobromic acid, the resulting DL-threo - 1 - phenyl - 2 - amino - 1 : 3 - dihydroxypropane being identified as its benzoic acid salt; (2) 1 - phenyl - 2 - amino - 1 : 3 - dimethoxypropane is acetylated with acetic anhydride and the product nitrated with concentrated nitric acid and acetic anhydride, after which deacetylation is effected with dilute hydrochloric acid and demethylation as in (1); the resulting DL-threo-1 - p - nitrophenyl - 2 - amino - 1 :3 - dihydroxypropane may be purified by formation of its hydrochloride or its benzoic acid salt, and identified by conversion with p-nitrobenzoyl chloride into its 2 : 3-bis-p-nitrobenzoyl derivative; following deacetylation but before demethylation, optical-resolution may be effected with tartaric or dibenzoyltartaric acid; (3) threo - 1 - phenyl - 2 - chloro - 1 : 3 - dimethoxypropane is treated as in (1). Halopropanediol ethers of the general formula above are prepared by treating the corresponding ethers of cinnamic or nitrocinnamic alcohol with an alcohol and a halogen (e.g. chlorine or bromine) in the presence of an acid-binding agent (e.g. yellow lead oxide). The preparation of the starting materials of examples (1) and (3) above is described in detail.
Patent GB-633717-A (GB)
Title: Method of dyeing cellulose acetate and dye bath compositions therefor
Inventor: GALATIOTO LUIGI CARLO
IPC: D06P1/28
Filed: 1947-02-14
Abstract: Secondary cellulose acetate is dyed with an aqueous solution of an indigosol dye acidified by an inorganic acid with or without admixed organic acid, and then treated with nitrous acid.  A non-acidic solvent for the cellulose acetate may also be present. Tables are included showing the results, expressed as colour yield and resistance to boil-off and bleach, of cellulose acetate yarn dyed with various indigosol dyestuffs in the presence of sulphuric acid with and without admixed acetic and formic acids and "Cellosolve" (Registered Trade Mark), development of the colour being effected by means of nitrous acid.  The Specification as open to inspection under Sect. 91 refers generally to the dyeing of cellulose acetate with an indigosol dye in the presence of an acid, followed by development with nitrous acid, and includes also in the tables examples wherein cellulose acetate yarn is dyed with indigosol dyes in the presence of acetic and/or formic acid without admixed inorganic acid.  This subject-matter does not appear in the Specification as accepted.