baber/WOPTO huggingface dataset:
Patent GB-154488-A (GB)
Title: Improvements in diving armor
IPC: B63C11/10
Filed: 1920-02-12
Abstract: 154,488. Jackson, C. Feb. 12, 1920. Divers' dress, and air supply for.-The helmet 11 of a diving dress has lateral extensions 12, 13, fitted with windows 17 and lamps 18, and each containing an electric fan. Fig. 3, a section on the line 3-3 in Fig. 2, shows the air circulation system. Air from the surface pumping gear is forced through the supply pipe 36, through the chamber 23 and pipe 43 to the outer end of the chamber 13, and driven by the fan 45 through holes in the baffle plate 46 to the interior of the helmet. Vitiated air is drawn from the helmet by the fan 51 and forced through the pipe 25 to the chamber 22 and thence up the pipe 26 to the surface, where it escapes through a safety valve. Should the air supply fail, a supply of oxygen from a cylinder 53, Fig. 2, may be admitted through a valve 56, Fig. 3, controlled by the diver's chin, and the pipe 55 to the outer end of the chamber 13, whence it is forced by the fan 45 into the helmet, and gas from a cylinder 58, Fig. 2, may be admitted through the valve 60 to displace the vitiated air, which escapes through the opening 24 and the pipe 26. The arm pieces of the dress, shown in Fig. 13, are secured rotatably to flanges 65 on the body, and provided with flexible connexions 67 at the elbow, and a pivoted hook 70, operated by the lever 72 and handle 73 co-acts with a fixed hook 69 to enable objects to be grasped. The leg sections have similar flexible connexions 77, Fig. 2, and are connected to flanges 75.
Patent GB-348641-A (GB)
Title: Improvements relating to alloys
IPC: C22C1/10
Filed: 1930-02-10
Abstract: A hard alloy of high tenacity, prepared by heating the elementary constituents so as to be completely molten for a short time, consists of at least 55 per cent of tungsten or molybdenum, or of tungsten and molybdenum, carbon preferably up to about 2 per cent, and 26-40 per cent of one or more additional metals of which at least 20 parts must be of chromium if the tungsten-molybdenum content does not exceed 70 per cent.  Iron, manganese, cobalt, nickel or chromium serve as the additional metals.  Hardening agents such as boron, silicon, aluminium up to 3 per cent may be added.
Patent GB-138937-A (GB)
Title: An automatic mechanical cooling bed for use in connection with rolling mills
IPC: B21B43/02
Filed: 1920-02-13
Abstract: 138,937. Dingler'sche Maschinenfabrik Akt.-Ges. June 15, 1917, [Convention date]. Rolling.-In a rolling-mill having conical delivery rolls 1 to receive 'bar-shaped material 3 after rolling, and pass it on transversely to a cooling bed, the first few rolls 1 are made cylindrical for part of their length, as shown by the dotted lines, to prevent fouling between one bar and the next, through the second bar prematurely running against a guide-ledge 2, which is carried by pivoted arms so as to rise and allow the bars to roll one at a time on to the cooling bed. This comprises two series of racks 18, 19 mounted on girders 16, 17 carried by frames 7, 8 moved and partly supported by eccentrics 5, 6 preferably on a single shaft 4, and actuating the rack 18, 19 so as to shift the bars forward one at a time. The frames 7, 8 also rest on rollers 9, 10 respectively, coverplates 13 being provided to prevent the frames rising at those ends. The racks 18, 19 deliver the bars to a sliding carriage 21 on pivoted girders 20, which are raised at intervals to allow the carriage 21 to be moved over a set of cylindrical rolls, by which the bars are transported longitudinally when the girders 20 are lowered. While the carriage 21 is transporting bars to the final delivery rolls, the bars from the cooling bed collect against stops 32 on the girders 20, and on the return movement of the carriage these bars are raised by inclined ends 33 so as to roll down against the carriage stops 22. The apparatus may be duplicated as shown. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of the apparatus for a " warming " bed. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1023932-A (GB)
Title: Methods of laying pipes for carrying heated fluids
IPC: F16L59/12
Filed: 1965-02-02
Abstract: Underground piping for conveying hot fluids is insulated by encasing it in a composition comprising 20 to 40% by weight of bitumen of plasticization temperature of above 60 DEG  C. (by ball-ring test) and from 5 to 20% by weight of a filler, the remainder consisting of heat-insulating additives such as expanded clay or shale; the filler and the additives both being of specified grain-size.  The filler may be powdered limestone.  The composition is poured around the piping, which may have been protected by a substance for inhibiting adhesion.
Patent GB-633938-A (GB)
Title: Improvements in drills
IPC: B23B51/00
Filed: 1948-02-17
Abstract: 633,938. Drilling-bits. PEARCE, H. F. Feb. 17, 1948, Nos. 4547, 26352 and 31587. [Class 83 (iii)] A drill comprises a semi-cylindrical blade 1 formed at its end with two plane or concave surfaces 2, 3 of unequal area convergently merging in an intermediate ridge 4 which is inclined to the axis of the drill and presents a centring point 5 coincident or incoincident with the axis of the drill. One of the blade edges may be chamfered. The blade may be longitudinally furrowed.
Patent GB-896068-A (GB)
Title: Process for the production of chloropentafluoroethane
IPC: C07C17/20
Filed: 1961-02-08
Abstract: Catalysts suitable for fluorination (see Group IV(b)) contain chromium oxide.  The catalyst may be the granular hydrous chromium oxide obtained by the action of ammonium hydroxide on an aqueous chromium salt solution; the partially dried precipitate can be cubed. In other variations: the hydrous chromium oxide may be mixed with a minor proportion of chromium chloride and pelleted; ammonium hydroxide can be reacted with a mixed chromium chloride and aluminium chloride solution, and the precipitate used in the form of granules, cubes or pellets; or the chromium oxide may be supported on alumina, e.g. by impregnating porous alumina with aqueous CrO3 solution, drying, and reducing at elevated temperatures in an atmosphere of hydrogen.ALSO:Chloropentafluoroethane is prepared by heating CF3CCl3, CF3CFCl2 or a mixture thereof with hydrogen fluoride at 200 DEG C.-500 DEG C. in the presence of a chromium fluorination catalyst. The reaction pressure may be atmospheric or sub- or superatmospheric. The fluorination catalyst may be granular hydrous chromium oxide precipitated by the action of ammonium hydroxide on aqueous chromium chloride or other chromium salt solution; the precipitate may be used in the form of cubes prepared from the partially dried product. Mixed and supported catalysts containing chromium oxide are also described (see Group III).
Patent GB-565751-A (GB)
Title: An improved dental flask
IPC: A61C13/16
Filed: 1943-03-22
Abstract: One of the parts is adapted to telescope into the other for a short distance, as by providing complementary rebates on the parts, to allow a spring clamp to maintain pressure on the plastic material when the latter shrinks, and the two parts are prevented from rotating relatively to each other by providing dowel pins or a spigot on one part and corresponding recesses in the other part.
Patent GB-464851-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B27/04
Filed: 1935-10-23
Abstract: 464,851. Sewing-machines. WILLCOX & GIBBS SEWING MACHINE CO. Oct. 23, 1935, No. 4665/37. Convention date, March 16, 1935. Divided out of 464,773. [Class 112] The presser-foot comprises a long spring strip pivotally supported at one end and carrying the presser-foot proper at the other, so as to enable it to ride over heavy cross seams. The spring strip 185, Fig. 2, is pivoted by studs on a boss 183 engaging a bracket. In addition to the pressure exerted by the resiliency of the spring strip, additional pressure may be applied by adjusting the nut 194 to tension the spring 192 which rests on a ball 193. Further, an arm 79 carries a screw 195 to adjust the pressure of the spring strip. A supplementary spring strip 201 may be provided when the strip 185 <1> is fairly rigid, Fig. 3. The presser foot 187<1> may be detachable at the nut 199 for replacement. The presser is adjustable transverse of the line of feed to bring it nearer to or further from the needle by a knurled nut 80, Fig. 4. The presser may be lifted by a treadle or handle fixed to the extension 203.
Patent GB-687627-A (GB)
Title: Improvements in high and very high voltage oil circuit-breakers
IPC: H01H33/55
Filed: 1951-02-26
Abstract: 687,627. Oil-break switches. MUSSO, G. Feb. 26, 1951, No. 4672/51. Class 38 (v) The arc-extinguishing oil of a circuit-breaker may be replaced whilst the breaker is under load by providing the breaker with filling-in and draining pipes of insulating material. A circuit-breaker has interrupting contacts C', C<SP>2</SP> connected to terminals m<SP>I</SP>, m<SP>2</SP> and situated in an oil-filled insulator I<SP>I</SP>, and a further oil-filled insulator I<SP>2</SP> enclosing a current transformer P, S, the two insulators I<SP>I</SP>, I<SP>2</SP> being separated by a metal tank K housing other breaker components. Replacement of the oil in the insulator I<SP>1</SP> is effected by insulating pipes A, E, having valves Ra, Re, and serving respectively for filling-in and draining away the oil. Since the valves Ra, Re are at zero potential, they are safe to handle. In a modification the pipe E may concentrically surround the lower portion of pipe A, The pipes A, E, may be mounted externally to the breaker and be protected by further insulators I', I<SP>II</SP>, Fig. 3. The pipe E may be constituted by the insulator I<SP>II</SP> (Fig. 4, not shown), and in a further modification the insulator I' may serve as the upper portion of the pipe A.
Patent GB-1528832-A (GB)
Title: Demand regulator for a breathing apparatus
IPC: B63C11/22
Filed: 1976-02-06
Abstract: 1528832 Respiratory apparatus demand regulator R A CHRISTIANSON 6 Feb 1976 [30 June 1975] 04782/76 Heading AST A second stage demand regulator for breathing apparatus consists of a control valve 19, between inlet and outlet passages 14 and 19 which is actuated by a diaphragm 26 in response to inhalation, a frusto-conical surface 35 being gradually contacted by the diaphragm on an increasing demand to reduce its effective area. The diaphragm is mounted on a floating block 27 linked by rods 28, 41 to the valve and has a peripheral bead 26d locatable with respect to the surface 35, a disc 31 on block 27, co-operating with an edge 30 to locate the diaphragm. On exhalation the bead leaves the surface edge 38 to provide an exhaust valve. The regulator may be purged by inward movement of a knob 70, to provide actuation of control valve 19, the knob 70 being outwardly biased by a coil spring 71. The valve 19 consists of a poppet 44 biased closed by a spring 55, opening of the valve causing an O-ring 52 to leave seat 51 and provide communication between the inlet and outlet passages via an aspirator opening 57. In a modification the aspirator opening is formed in a separate cylindrical part of the valve housing 20 which is rotatable from outside the regulator housing 17.
Patent GB-637896-A (GB)
Title: Improvements in dynamo electric machines
IPC: H02K1/16
Filed: 1948-02-20
Abstract: 637,896. Cooling dynamo-electric machines. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Feb. 20, 1948, No. 5104. Convention date, Dec. 28, 1945. [Class 35] Stator slot conductors are retained by U- shaped members arranged with the base of the U towards the windings, these members also serving as ducts for the passage of cooling fluid from one end of the stator to the other. As shown, the retainers 18 form closed ducts in conjunction with a sleeve 13 in the stator bore and are traversed by cooling liquid such as oil.
Patent GB-372438-A (GB)
Title: Improvements in and relating to prismatic reflectors
IPC: F21V5/00
Filed: 1931-02-18
Abstract: 372,438. Prismatic reflectors. HOLOPHANE, Ltd. and ENGLISH, S., Holophane House, Elverton Street, London. Feb. 18, 1931, No. 5171. [Class 75 (ii).] In prismatic reflectors of non-circular horizontal section the prism systems radiate from points of normal incidence and reflection, the incident ray to a prism at any point and the corresponding reflected ray lying in two parallel planes which are parallel to the axis of the prism on which the point lies. Fig. 4 shows a flat sheet reflector adapted to be used in building up large composite reflectors for flood lighting, the prisms radiating from the point 1 which receives light from the source-along the normal to the reflector. The plate may be triangular in shape. In an ellipsoidal reflector for street lighting, shown in side elevation in Fig. 8, the prisms radiate from the points where vertical prisms 2, 3 giving no horizontal deviation cut a horizontal prism 4 giving no vertical deviation. As shown in Fig. 8, however, the prisms radiating from the major axis crossings are omitted and those from the minor axis crossings 5 continued up to the vertical prisms 2, to refract light on to an outer envelope as described in Specification 371,991. Specifications 21995/09 and 238,498, [both in Class 75 (ii), Lamp chimneys &c.], are also referred to.
Patent GB-1001295-A (GB)
Title: Sinuous spring structure
IPC: A47C7/30
Filed: 1963-02-08
Abstract: 1,001,295. Spring upholstery. KAY MANUFACTURING CORPORATION. Feb. 8, 1963 [April 3, 1962], No. 5197/63. Heading A4M. [Also in Division F2] A sinuous wire spring 15, e.g. for supporting cushions on seats, and of the kind which terminates in straight tips 14 extending laterally, perpendicular to the general plane of the spring, from substantially semi-circular end loops 18, is characterized in that the tips 14 are disposed in transverse relation to, and short of, the longitudinal centre line 19 of the spring. The wave length of the spring is substantially greater than the width, the tips 14 being located either both on the same side, or on opposite sides, of the centre line 19.
Patent GB-469686-A (GB)
Title: Improvements in or relating to mowing, cultivating and other agricultural machinery
IPC: A01D34/06
Filed: 1936-02-20
Abstract: 469,686. Mowing &c. machines. BAKER, W., and MORGAN, D. T. Feb. 20, 1936, No. 5199. [Classes 6 (i) and 6 (iii)] The coachwork, rear wheels, and the rear portion of the chassis of a motor-driven vehicle are removed and a tractor attachment as described in Specification 469,685 secured to the shortened chassis, the rear end of the framework 1 of the attachment being secured by brackets 6 and its forward end by clamps 8 to the chassis 7. A power shaft 10 which extends longitudinally of the attachment is coupled at its front end to the driving shaft of the motor and drives through spur gearing 12, 13 and a substantially parallel auxiliary shaft, the differential gear of the rear wheel axle. A mowing or like machine is detachably suspended from the attachment so as to be between the front and the rear wheels of the machine and is driven from a countershaft 43 connected to the power shaft through chain-and-sprocket gear 23 and a clutch 22. The inclination of the knife bar 38 is adjusted by a hand lever 34 co-operating with a fixed quadrant. The mowing unit is adapted to be lifted out of operative position by a hand lever 27 fitted with a pawl engaging the teeth of a quadrant and fixed to a shaft 28 carrying an arm 29 from which a stirrup depends to a hinged transverse tie-bar. A foot lever may be arranged to assist the hand lever. In the Provisional Specification it is stated that ploughing, cultivating and like machines may be fitted instead of mowing and like machines.
Patent GB-815857-A (GB)
Title: Improvements in and relating to the production of aromatic alcohols
Inventor: BEW DEREK GEORGE
Filed: 1957-02-15
Abstract: An aromatic hydrocarbon containing one or two nuclear substituents having a structure <FORM:0815857/IV (b)/1> where R1 and R11 are alkyl groups, is partially oxidized to the corresponding hydroperoxide and the hydroperoxide reduced to the corresponding tertiary alcohol without being separated from the unreacted hydrocarbon.  It is found that working in this manner it is possible to obtain constant yields of alcohol when the unreacted mixture is subjected to further oxidation and reduction after the oxidized material has been replaced by fresh hydrocarbon and that this treatment may be repeated several times.  Compounds such as isopropyl benzene, m- or p-di-isopropyl benzene or m- or p-di-sec.-butyl benzene may be oxidized with air and the hydroperoxide reduced with an alkali metal sulphite, or hydrosulphite or catalytically, e.g. with hydrogen over Raney nickel. The hydroperoxide is preferably reduced using a hot aqueous solution of sodium sulphite containing 10 per cent over the theoretical quantity.  In the examples: (1) a feedstock containing p-di-isopropyl benzene with sodium stearate, sodium carbonate and p-di-isopropyl benzene hydroperoxide is heated to 95-98 DEG  and air passed through for 8 hours, the product is poured into a hot solution of sodium sulphite and refluxed for 5 hours, p-di-isopropyl benzene a  : a 1-diol separates out on cooling, the residue is washed with water and sodium hydroxide and dried and subjected to further oxidation after the original volume is made up with fresh p-di-isopropyl benzene, the cycle is repeated a further six times; (2) a similar experiment is carried out, using three runs, on the meta isomer.
Patent GB-525285-A (GB)
Title: Improvements in or relating to heaters for use in railway carriages and other livingspaces
IPC: B61D27/00
Filed: 1939-02-16
Abstract: 525,285. Heating railway carriages. YOUNG, E. M. Feb. 16, 1939, No. 5222. [Class 39 (iii)] A radiator, particularly applicable for mounting below a railway seat, comprises a semicylindrical radiating plate 1 forming the front wall of a casing enclosing an electric heater 15 spaced from the plate 1. The casing, other than the plate 1, is double-walled with heat insulation 8, and the plate 1 may be welded to the top and bottom walls of the casing or may be detachable therefrom for access to the heater 15. The heater is supported by pillars 17 carried by terminal blocks 16 and the leads 18 pass through a gland 19. The heater may be run at about 400 ‹C. and the temperature of the plate 1 may be 80‹-250‹C. In a modification, the current leads may pass through the bottom of the casing. In another modification, Fig. 5, not shown, the cross section of the plate 1 may be circular in its lower part and parabolic in its upper part, and it may be detachably secured to lugs carried by the body of the casing. The electric heater may be replaced by pipes heated by steam or exhaust gases and the radiator may be fixed in a recess in a wall.
Patent GB-266736-A (GB)
Title: Process for the treatment of vegetables more especially cereals for the recovery of endosperm
IPC: B02C9/00
Filed: 1927-02-24
Abstract: 266,736. Bartmann, L. Feb. 27, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Hulling, husking, and decorticating ; reduction processes; treatment by damping and drying; treating with air; treating with bacteria and ferments.-Cereals or similar grains are steeped in a weak alkali or acid solution to cause the cellulose forming the greater part of the husk and the aleuron layer to swell and be lifted out of the fold of the grain. The alkali or acid solution may be removed by washing or by neutralization and the first agent and the agent used to neutralize it may be chosen to give desired physiological characteristics to the bran. The swollen grains are dried by centrifuging or by treatment with hot air and then hulled in the usual way. The grain may be merely softened or it may be steeped and dried twice over, such steeping and drying being arranged to leave the aleuron layer on the outside. The grain may also be treated so that the hulls may be removed by a jet of water, a supplementary treatment with soft brushes being resorted to if desired. The alkali or acid may be replaced by cultures of certain cellulose dissolving bacteria such as bacillus amylobacter, or the enzyme of this microorganism may be 'employed. As a particular example of the process grain is soaked in a warm solution of caustic soda, having a strength of 0.1-0.2 per cent, for 1-2 hours. Substances that exert a favourable effect upon the baking quality of the gluten may be added during the steeping process.
Patent GB-646185-A (GB)
Title: Improvements in and relating to the recording of sound on films
IPC: G11B7/00
Filed: 1948-02-23
Abstract: 646,185. Recording sound in association with kinematography. VINTEN, C. Feb. 23, 1948, No. 5287. Drawings to Specification. [Class 40 (ii)] A sound-film is produced simultaneously with several different language sound-tracks, by observers in auxiliary sound-proof booths in visual connection with the studio, each observer speaking a separate language script as the action proceeds.
Patent GB-608335-A (GB)
Title: A process for improving the properties of nylon fibres
IPC: D06M13/127
Filed: 1946-02-20
Abstract: Nylon filaments are given a softer hand, an increased resiliency and resistance to solvents, a higher melting point and a better dye receptivity by reacting the undrawn filaments with a solution having a pH below 3 of formaldehyde and an oxygen-containing acid catalyst in an alcohol at a temperature of from 40 DEG  to 130 DEG  C., cold drawing the so-treated filaments and insolubilizing them by, for example, a baking treatment.  The polyamide to be treated must possess hydrogen-bearing amide groups, and the formaldehyde treatment is stopped when from 1 to 20 per cent of the total amide groups in the molecule is converted into N-alkoxymethyl groups.  Formaldehyde is preferably employed in the form of paraformaldehyde, but a formalin solution or polyoxymethylene can also be used.  Suitable alcohols are methanol, ethanol, propyl, butyl, amyl and benzyl alcohol, cyclohexanol, ethylene glycol, diethylene glycol, propylene glycol, allyl, methallyl and crotyl alcohol and substituted alcohols such as hydroxy-acetic or lactic acids.  Suitable acid catalysts are oxalic, maleic, mono-, di- or tri-chloroacetic, fumaric, formic, p-toluenesulphonic, phosphoric and phosphorous acid.  Numerous suitable polyamides and interpolyamides are specified.  The insolubilizing treatment may be effected by heat alone, but is preferably carried out by baking in the presence of an acid such as maleic, oxalic, succinic, adipic, glutaric, p-toluenesulphonic, acetic, formic, hydroxy-acetic, lactic, sulphuric and hydrochloric acid.  Alternatively, insolubilization may be effected by impregnating the filaments with a solution of a peroxy compound, e.g. benzoyl peroxide, diacetyl peroxide, lauroyl peroxide, diethyl peroxide, zinc peroxide and hydrogen peroxide, and then baking or exposing to a source of concentrated ultra-violet light.  If desired, the acid catalyst or the peroxy compound may be applied to the filaments prior to cold drawing. Fibres may be woven or knitted into fabric prior to the insolubilizing treatment, any impregnation with acid or peroxide being done either before or after weaving.  In an example, polyhexamethylene adipamide yarn is immersed in a methanol solution of paraformaldehyde and anhydrous oxalic acid at 64 DEG  C. The yarn is removed, rinsed with aqueous ammonium hydroxide, dried, cold drawn to a ratio of 3.51 : 1, soaked in an aqueous oxalic acid solution, dried and baked for 5 minutes at 110 DEG  C. Specifications 461,236, 461,237, 534,698, 573,482 and 582,517 are referred to.