baber/WOPTO huggingface dataset:
Patent GB-798780-A (GB)
Title: Improvements in or relating to the tanning of leather
IPC: C14C3/24
Filed: 1956-01-30
Abstract: 798,780. Tanning leather. ST. LAWRENCE CORPORATION, Ltd. Jan. 30, 1956 [Jan. 31, 1955], No. 2970/56. Addition to 777,474. Class 76. Leather stock is impregnated with an aqueous solution of a lignin, a silicate, an aldehyde and a dibasic acid amide and/or aminotriazine or a condensation product of the latter two components, and a precipitate formed in situ by the addition of sufficient acid. Lignin materials referred to are obtained by evaporation or (in the case of cellulose saccharification residues-Burgius or Scholler process) by treatment with caustic soda and acidification of, waste liquors obtained by treatment of wood with soda, calcium or magnesium bisulphites (sulphite pulping process), or soda and sodium sulphate (Kraft process). If acid liquors based on calcium or magnesium oxides are used, precipitation of the silicate must be avoided : the alkaline earth metal may be replaced or removed with ammonium or sodium, e.g. by adding a surplus of sodium silicate. The alkaline earth solids precipitate may be allowed to remain in the liquor. Other acid liquors (ammonium- or alkali metal-based) should be alkalized first, if desired with an additional quantity of the silicate. Suitable silicates are sodium and potassium silicates: they may be used in amounts sufficient to give a silica precipitate equal to “-50 per cent of the lignin-aldehydeamide precipitate, e.g. from 1-30 per cent of the other components. In examples, several of the above-mentioned lignin materials are employed with sodium silicate and (1) aqueous formaldehyde and melamine, (2) paraformaldehyde and urea, (3) aqueous formaldehyde, melamine and urea; acidification was carried out with hydrochloric acid. Specification 798,779 is referred to.
Patent GB-428713-A (GB)
Title: Mounting folding legs on tables
Filed: 1934-01-29
Abstract: 428,713. Hinges. BROWN, A. C., 1, Wolsey Street, Ipswich. Jan. 29, 1934, No. 2989. [Class 65 (ii)] In a folding table, of which Fig. 1 is a section taken just inside the flange opposite to flange 8, the leg 1 is pivoted to a L-shaped bracket 10 by a screw 2 which passes through a bent-out lug 11 of the bracket, the leg 1 and a limb 10<1> of the bracket into the table flange 3. The limb 10 of the bracket is spaced from the adjacent flange of the table by a block 14, and is secured to the flange by a screw 7 which is engaged by a hook 5, pivoted on the leg 1 and swinging between the bracket limb 10 and the table flange, to lock the leg in the unfolded position. The upper part of the leg has a U-shaped metal guard.
Patent GB-130422-A (GB)
Title: Improvements in or relating to Recoil and Run-out Gear for Ordnance.
Inventor: DAWSON ARTHUR TREVOR
IPC: F41A25/20
Filed: 1917-01-19
Abstract: 130,422. Dawson, Sir A. T., and Buckham, Sir G. T. Jan. 19,1917. Recoil apparatus.-Relates to hydro-pneumatic apparatus comprising a recoil and run-out cylinder B and an air cylinder C, for example as described in Specifications 126,376 and 130,423. According to the invention, means are provided to cut off communication between the cylinders B, C as the gun is competing its recoil. In the form shown in Fig. 1, the cut-off is done by a ram b<1> on the piston B<1> fitting into the reduced mouth b<2> of the cylinder. In a modification, a spring valve on the piston strikes against a seat at the mouth of the cylinder.
Patent GB-561793-A (GB)
Title: Improvement in razor blade sharpeners
IPC: B24D15/08
Filed: 1943-02-24
Abstract: 561,793. Safety razor sharpeners. DOLL, J. A. Feb. 24, 1943, No. 3039. Convention date, May 27, 1942. [Class 60] A box has means for fixing a blade so that a loose ribbed block with sloping faces rests thereon and can be moved transversely of the blade by shaking the box, another similar block coming into play when the box is turned over. The blade 15 is held by a rib 6 on a longitudinal member 3 supported in the ends of one half 1 of the box, the other half 2 of which has a complemental slotted member 3<1>. The blocks 10, of glass &c., have sloping ribs 14 on their operative faces and recesses 12 to permit their transverse movement:
Patent GB-1417755-A (GB)
Title: Apparatus for wiping surplus glaze from ceramic ware prior to  firing
IPC: B28B11/04
Filed: 1973-01-20
Abstract: 1417755 Glazing ceramic ware STAFFORDSHIRE POTTERIES (HOLDINGS) Ltd 31 Dec 1973 [20 Jan 1973] 3058/73 Heading C1M An apparatus for wiping glaze from the feet (annular base rim) of ceramic ware comprises a single belt of absorbent material for supporting and conveying the ware, associated with at least one fixed deflector extending diagonally across the belt. As shown, the belt 20 runs around end rollers 22, 24 and its lower run passes through a wash tank 26 and a mangle 28. The deflectors 30 are formed of wire extending through a nylon sleeve. The absorbent material may be a stiff pile material or a perforated synthetic sponge material.
Patent GB-391273-A (GB)
Title: Improvements in and relating to fire grates
IPC: F23H13/00
Filed: 1932-02-03
Abstract: 391,273. Stove canopies. HARPER, H., 372, Manchester Road, Bradford, Yorkshire. Feb. 3, 1932, No. 3170. [Class 126.] A canopy or cowl c for fitting to a stove in which a barless grate has been substituted for the original barred grate is secured by clips or the like A, which may be provided with clamping screws, adapted to grip an overhanging or depending upper part of the stove, such as the edge Bx. Reference has been directed by the Comptroller to Specification 7141/84, [Class 126, Stoves &c.].
Patent GB-547568-A (GB)
Title: Method of preparing photocollographic printing plates
IPC: G03F7/14
Filed: 1941-03-10
Abstract: 547,568. Photo-mechanical printing surfaces. MACBRIDE, J. W. March 10, 1941, No. 3230. Convention date, Sept. 14, 1940. [Class 98 (ii)] An improved collotype printing-plate is produced by coating a plated metal base with hardened colloid, drying, bathing it in an alkali bichromate sensitizing solution, drying it, e.g. in a current of air at a controlled rate to control the printing contrasts of the plate, exposing it to light under a negative to produce imagewise hardening of the colloid, immersing it in water bath at a predetermined temperature, which bath swells the unexposed colloid faster than the hardened colloid above it so that the latter becomes reticulated and presents a grainy surface having a degree of fineness dependent on the temperature, and finally washing out the residual sensitizing agent. The plate may then be made ready for printing by treatment with a hygroscopic fluid, having a non-glycerine base such as ethylene glycol or di-ethylene glycol, which will not attack the colloid, but will be merely absorbed at the unhardened parts to maintain them moist. The base is preferably of copper, mechanically or chemically roughened, and plated with nickel or silver. Plated zinc or iron may also be used. The colloid may be gelatin hardened with chrome alum. The printing contrasts of the plate may be varied by choice of the sensitizing agent (potassium bichromate gives the strongest contrast), or of the strength of the sensitizing bath, as well as by the rate of drying of the sensitized coating. A known collotype process is described in detail.
Patent GB-236604-A (GB)
Title: Improvements in sandpapering machines and the like
IPC: B24B21/00
Filed: 1924-02-07
Abstract: 236,604. White & Sons, Ltd., T., and White, T. Feb. 7, 1924. No Patent granted (Sealing fee not paid). Flat extended surfaces, surfacing.-In a sandpapering or like machine in which the work is moved beneath sanding &c. rollers a<1> by an endless belt a<2> running over a worktable a, the table is mounted upon knife-edges and is held up to the belt by spring pressure. The table has thereon knife-edges b, b<1>, and vertically-adjustable supports have thereon knife-edges d, d'; these edges co-operate with edges formed on flattened parts c<2> of shafts c, c<1>, and the shafts have thereon levers e, e<1> coupled by rods f and either or both acted on by a spring g. One of the levers may be formed as a hand lever.
Patent GB-480481-A (GB)
Title: Improvements in and relating to carburettors for internal combustion engines
IPC: F02M7/06
Filed: 1937-02-04
Abstract: 480,481. Spray carburetters. METROVERGASER AKT.-GES. Feb. 4, 1937, No. 3353. Convention date, Feb. 5, 1936. [Class 7 (iii)] Fuel is supplied through a jet in a perforated tube to a well d which is in communication through a slit f, with a chamber g open to the atmosphere at h and with a main nozzle v. Fuel is also supplied through a second jet into a perforated tube r surrounded by a sleeve m, open to the atmosphere at n, to a chamber k open to the atmosphere at y, and this mixture is supplied during idling to a passage adjacent the throttle a. At starting, a rotary valve p is operated to supply the mixture from the chamber k to a port q discharging above the throttle a.
Patent GB-178949-A (GB)
Title: Improvements in truck tipplers or means for emptying trucks and like vehicles
IPC: B65G67/00
Filed: 1921-01-27
Abstract: 178,949. Provay, G. A. P. Jan. 27, 1921. Rotary tipplers.-In a rotary tippler the stationary cam or cams 15 for controlling the movement of the carriage 3 on its track 6 as the cradle 1 rotates, is or are formed with a shallow recess 17 in which engages, when the tippler is in its normal position, a roller or rollers 14 carried by the carriage or connected thereto through a lever 10. The recess holds the rollers whereby the carriage is steadied and the rails maintained in alignment.
Patent GB-1248193-A (GB)
Title: Microscope slide
IPC: G02B21/34
Filed: 1970-01-23
Abstract: 1,248,193. Micro-scope slides. RICHARDSONMERRELL Inc. Jan. 23, 1970 [Feb. 10, 1969], No.3501/70. Heading G2J. A multiple well micro-scope slide 10 comprises a flat rectangular plate of glass or other transparent material such as polystyrene in one surface of which square wells or depressions 20 are defined by a longitudinal rib 16 and transverse ribs 18, the wells 20 being open at that side adjacent an edge of the plate, and that surface of the plate opposite each well is flat. Each well bottom 22 is flat and lies in a place parallel to said flat surface of the plate. Dimensions of the plate and wells are given. Two examples are given of the use of the slide as a multiple well tissue culture slide.
Patent GB-161371-A (GB)
Title: Improvements in machines for automatically folding wrappers around rectangular tablets
IPC: B65B11/44
Filed: 1920-02-05
Abstract: 161,371. Forgrove Machinery Co., Ltd., and Gregory, H. E. Feb. 5, 1920. Packeting by wrapping-up. - Relates to machines for wrapping-up rectangular tablets such as sweetmeats &c. and of the type in which the wrapper is fed into a pocket and a length cut off, the tablet is moved through a slot in the pocket carrying the wrapper into a gripper device whereby it is partially folded, the gripper is then mcved downwards past a curved plate which folds up the rearward edge, and the tablet is then ejected to cause the upstanding edge to be folded down. The wrapper is fed over spools 3, Fig. 6, between intermittently rotating rollers 4, 5 into a pocket 11, a length being cut off by a knife 12. A tablet is fed by a belt 15 in front of a plunger 17 which forces it with the wrapper into a gripper 23, mounted on an arm 24, making the folds shown in Fig. 2. The gripper then moves downwards, the plate 26 making the fold shown in Fig. 3. An ejector bar 27 then forces the tablet and wrapper into the grip of a spring clip 33 in a rotary spool 28, the packet then being in the condition shown in Fig. 4. Projecting into the spool are two pairs of jaws, each comprising a stationary jaw 34, Fig. 9, and a pivoted jaw 35 which grip the projecting ends of the wrapper. The spool 28 then rotates, carrying the tablet with it. and ihe jaws travel inwards towards each other, the ends thus being twisted as shown in Fig. 5. Each tablet is ejected from the spool by the succeeding one.
Patent GB-1040061-A (GB)
Title: Improvements in or relating to method of manufacturing exchanger packings and exchanger packings manufactured according to said method
IPC: C04B38/00
Filed: 1963-01-29
Abstract: A hygroscopic packing for use in transferring moisture and/or heat comprises thin layers or sheets consisting of a non-metallic and inorganic material such as asbestos, alternate layers being corrugated and contact between adjacent layers being made by the ridges of the corrugations, is manufactured by impregnating the layers with a gel-forming liquid which is then concentrated by evaporation to produce a solid substance e.g. silica which remains distributed over fibres of the sheet material.  The impregnant may be an organic silicic acid compound.  Alternatively the layers may be initially impregnated with water glass and subsequently with an acid. Alternative materials which may be used for the carrier are porous ceramic or a structural mass of fine filaments of metal or mineral wool, having passages penetrating from end to end for the passage of gases.
Patent GB-1135084-A (GB)
Title: The preparation of masks for colour separation positives
IPC: G03G17/02
Filed: 1966-01-26
Abstract: 1,135,084. Colour separation masks. MINNESOTA MINING & MANUFACTURING CO. Jan.26, 1966 [April 7, 1965], No.3564/66. Heading G2H. Black and white masks for colour separation positives for use in a printing process using printing inks of primary colours X, Y and Z are prepared by (1) exposing through a colour negative a panchromatically sensitized white photo-conductive copy sheet to light of the colour complement of Y and developing the differential conductivity pattern formed in the exposed areas with a dye of colour X to compensate for the X component of the Y coloured ink, (2) removing the conductivity pattern and restoring said copy sheet to a uniform sensitivity (e.g. by immersing in boiling water) (3) exposing the copysheet through the colour negative using light of the colour complement of Z, and developing the exposed areas with a dye of colour X to compensate for the X component of the Z coloured printing ink (4) repeating step 2, (5) exposing the copysheet through the colour negative using light of the colour complement of X, and developing the exposed areas using a material having a colour which absorbs light freely transmitted by a dye of colour X, and (6) producing a black and white positive separation mask by photographing said copysheet in a light of a colour which is freely transmitted by the dye of colour X and which is absorbed by the coloured developer used in step 5. Masks for the other separation negatives to compensate for the other non-ideal absorptions of the inks used are prepared similarly. In processes wherein the masks are to be used in conjunction with a printing process using only two inks, X and Y, or when the X component of the Z ink is negligible steps 3 and 4 are omitted. In a typical Example, a mask which compensates for the magenta component of the yellow and cyan printing inks is prepared by using blue, red and green for the exposures and magenta, magenta and cyan developers in steps 1, 3 and 5 respectively and using red light in step 6.
Patent GB-773565-A (GB)
Title: An improved device for fixing a mast on a support
IPC: E04H12/00
Filed: 1955-02-07
Abstract: 773,565. Aerials. VANDENBORRE, L. E. Feb. 7, 1955 [Feb. 5, 1954], No. 3571/55. Class 40(7) [Also in Groups X and XIV] An aerial support mast 1 has its lower part shaped to conform at least partly to the shape of a chimney or the like and is held thereagainst by means encircling the chimney. The tubular metal mast has, at its lower end, a polygonal loop ABCD shaped to fit the corner of a chimney. The loop is held in place by a cable 4, with eyelets 5 which engage over hooks 6 having threaded ends 7 passing through sides BC of the loop and held by nuts 8. Protective corners 9 are provided at the corners of the chimney under cable 4.
Patent GB-749368-A (GB)
Title: Improvements in and relating to electrical repeating devices
Inventor: EVERETT REGINALD EDGAR
IPC: G05D3/12
Filed: 1953-02-09
Abstract: 749,368. Electric selective signalling. EVERETT, EDGCUMBE & CO., Ltd. Feb. 9, 1954 [Feb. 9, 1953], No. 3577/53. Class 40(1) [Also in Group XXXV] Movement of a meter pointer M or other control element closes a follow-up switch F-E-E<SP>1</SP> to energize one or other of stepping magnets A, B, according to the sense in which the switch arm F is closed, in series with a corresponding stepping magnet G, H at the receiver, from a pulse source K of alternating polarity whereby the follower element C at the transmitter is stepped to follow-up the switch arm F in synchronism with stepping of the receiver. The stepping magnets are polarized by rectifiers a, b, h, g or by permanent magnets to reduce the line wires needed to two but may be dispensed with if an extra line wire is used. Reversible selector switches as used in automatic telephony may be employed. In a modification, the transmitter and receiver comprise oppositely polarized windings to which the pulses of alternating polarity are normally applied, these pulses having no effect until the transmitter control contact is moved to prevent transmission of impulses of one polarity, the pulses of the opposite polarity then effecting synchronous stepping of transmitter and receiver until coincidence is achieved by the transmitter follow-up switch.
Patent GB-305239-A (GB)
Title: Improvements in and relating to gas burners
IPC: F23D14/34
Filed: 1929-02-02
Abstract: 305,239. British Thomson-Houston Co., Ltd., (Assignees of Ellis, A. Le R.). Feb. 2. 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Blow-pipe and like burners.-A burner designed more especiallv for fusing silica &c. comprises a bundle of tubes through which one of the gases entering into combustion is fed, the other gas being fed through the spaces between the tubes. This construction is designed to produce a quiet flame. As shown in Fig. 1, small tubes 1 secured in a partition 3 extend from this partition to the burner nozzle through a chamber to which combustion supporting-gas is supplied at 12, the combustible gas being supplied to the tubes from a tube 6 having a screw-union connection with the burner. The ends of the tubes are preferably bent, as shown in Figs. 5 and 13, those of alternate concentric rows being bent in opposite directions. Various packing ararngements of the tubes are described i.e. rectangular. Fig. 12, small separately united bundles. Fig. 11, or in a single row, Fig. 9. In a further modification the tubes are positioned in alternate squares of a piece of wire mesh.
Patent GB-587770-A (GB)
Title: Improvements in the synthetic manufacture of urea
IPC: C07C273/04
Filed: 1942-03-18
Abstract: Urea is prepared by a process which consists in introducing in a continuous manner into an autoclave heated under pressure, carbon dioxide and ammonia which first combine to form ammonium carbamate, which is partly decomposed into urea and water, in extracting from the autoclave the resulting liquid mixture of urea and water and undecomposed carbamate, heating said mixture to decompose the residual carbamate into ammonia and carbon dioxide and recovering urea from the aqueous solution, said process being characterised by the fact that there is injected into the autoclave at the same time as the carbon dioxide and ammonia, a hydrocarbon oil or other inert viscous hydrocarbon liquid not containing any carbamate in suspension.  In one method of operation, the whole of the ammonium carbamate is formed in the autoclave by injecting the hydrocarbon oil into the autoclave at the same time as the ammonia and carbon dioxide.  According to another method, part only of the hydrocarbon oil is fed directly into the synthesis autoclave with ammonia and carbon dioxide and the remainder to an apparatus for the preparation of a hydrocarbon oil suspension of ammonium carbamate which is then injected into the urea synthesis autoclave, thus giving an operation intermediate between the first method and that described in Specification 488,404 where the whole of the oil is used in forming a suspension of ammonium carbamate which is subsequently fed to a urea synthesis autoclave.  The reaction products from the autoclave are fed into a fractionating column and the carbon dioxide and ammonia liberated by the decomposition of residual carbamate are removed from the top of the column and the mixture of oil and aqueous urea from the bottom.  The urea solution is separated from the oil by decantation.
Patent GB-825209-A (GB)
Title: Improvements in or relating to bin filling apparatus
Inventor: MATTSON DAVID FALK
IPC: B65G53/60
Filed: 1956-02-06
Abstract: 825,209. Bin-filling devices. ATKINSON BULK TRANSPORT CO. Feb. 6, 1956, No. 3697/56. Class 78 (4). A wheeled bin 6 is filled with flour which is introduced in an air-fluidized state at 8 and passes along apertured tube 10, the flour closing the apertures one-by-one till the bin is completely filled.
Patent GB-659494-A (GB)
Title: A process for the recovery of products which do not dialyse or dialyse only slowly from a liquid contaminated with inorganic substances
IPC: C13B20/18
Filed: 1949-02-10
Abstract: 659,494. Electro-dialytic purification of liquids. NEDERLANDSE CENTRALE ORGANISATIE VOOR TOEGEPAST. NATUURWETEN-SCHAPPELIJK, ONDERZOEK. Feb. 10, 1949, No. 3708. Convention date, March 19, 1948. [Class 41] A process for the recovery of products which do not dialyse or dialyse only slowly from a liquid contaminated with inorganic substances, comprises subjecting the liquid to electrodialysis under vigorous agitation, while controlling the pH value of the liquid by washing at a controlled rate the anode chamber with a dilute solution of an acid and/or a neutral reacting electrolyte and the cathode chamber with a dilute solution of a mixture of a base and a neutral reacting electrolyte, or by washing at a controlled rate the anode chamber with a dilute solution of a mixture of an acid and a neutral reacting electrolyte and the cathode chamber with a dilute solution of a base and/or a neutral reacting electrolyte, the recovery of the products being completed by concentration, precipitation, or the application of other chemical and physical means. Examples are given of (1) the treatment of unpurified saltedout pepsin in which a solution of sulphuric acid and sodium sulphate was used as anodic washing liquid and a solution of sodium hydrate and sodium chloride was used as the cathodic washing liquid; and (2) the treatment of sugar syrup, the anodic washing liquid containing sulphuric acid and potassium sulphate and the cathodic washing liquid containing potassium hydrate. The process of the invention may be combined with other methods, for example acid or alkali may be added to the liquid under treatment, to assist in keeping the pH value constant.