baber/WOPTO huggingface dataset:
Patent GB-502448-A (GB)
Title: A process for the removal of mercaptans from hydrocarbons or derivatives thereof
Filed: 1938-05-09
Abstract: 502,448. Desulphurizing hydrocarbons regenerating solvents used for purifying hydrocarbons. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. May 9, 1938, No. 13833. Convention date, May 26, 1937. Drawings to Specification. [Class 91] [Also in Group IV] Hydrocarbons containing mercaptans but no other acidic constituent are freed from mercaptans by extracting with an alcoholic solution containing an alkali metal hydroxide and water, the proportion of alcohol being from 25 to 75 per cent by volume of the mixture. The preferred solvent consists of a 2 to 5 N aqueous caustic alkali solution containing added ethyl or methyl alcohol to form a 50 to 60 per cent solution. The hydrocarbon is extracted with the solvent and the layers are separated. The alkali sludge layer is regenerated by oxidizing the mercaptans to disulphides by electrolytic oxidation,. or with air at 20-50‹ C. in the presence of oxidation catalysts such as heavy metal sulphides. The disulphides are of low solubility in the solvent and are removed by skimming. The regenerated solvent is used for extracting a further amount of hydrocarbon, re-introduced sulphur being maintained at a minimum by adjusting the alcohol content of the solvent. Mineral oil distillates such as gasoline, benzene, toluene,' xylene, pentane, or hexane may be treated as well as solvents which have been used to remove mercaptans from oils, such as chlorinated hydrocarbons, or quinoline. Specification 481,235 is referred to.
Patent GB-907983-A (GB)
Title: Improvements in or relating to chain tensioners
Inventor: PAGE VALENTINE
IPC: B62M9/16
Filed: 1958-05-01
Abstract: 907,983. Chain tensioners. BIRMINGHAM SMALL ARMS CO. Ltd. July 15, 1959 [May 1, 1958], No. 13837/58. Class 80 (1). A chain 3 is tensioned by a bowed resilient strip 5 having a contact pad 7. The ends of the strip 5 are mounted upon a rod 17 between a collar 19 and a block 15 into which the rod 17 is screwed. Rotation of the rod 17 by means of a cap 21 from outside the casing 1 moves the block 15 towards or away from the collar 19 to increase or decrease the tension of the strip 5.
Patent GB-1361332-A (GB)
Title: Process for the production of 3-chloroo-1-propanol
IPC: C07C47/14
Filed: 1972-03-24
Abstract: 1361332 3-Chloro-1 -propanol DEUTSCHE GOLDUND SILBER - SCHEIDEANSTALT 24 March 1972 [30 March 1971] 13839/72 Heading C2C 3-Chloro-1-propanol is prepared by reacting acrolein with hydrogen chloride in an organic solvent in the presence of excess acrolein and reducing the chloropropionaldehyde so formed by means of an alkali metal borohydride, e.g. sodium or potassium borohydride. The initial reaction is preferably carried out at a temperature of from -30‹ to + 50‹ C. with the reduction being carried out at from 15‹ to 35‹ C. The hydrogen chloride is preferably used in a deficiency with respect to the stoiehiometric quantity of 5 to 10 mol. per cent.
Patent GB-645728-A (GB)
Title: Improvements in or relating to electro-magnetic clutches
IPC: F16D43/04
Filed: 1948-05-21
Abstract: 645,728. Friction clutches. HUMBER, Ltd., and MILLER, A. C. May 21,1948, No. 13889. [Class 80(ii)] [Also in Group XXXV]  An electromagnetic friction or eddy-current clutch, for a motor-vehicle, has two equal or unequal windings, energization of one, 7, providing for slipping take-up at reduced torque-capacity which is subsequently increased to full at a predetermined speed by energization of the second parallel winding 6, through a centrifugal switch 35 rotating with the driving flywheel 1. Both windings 6, 7 are concentrically carried by the driving flywheel 1 in an annular recess having a tapered mouth receiving a tapered annular armature 11 fast to the presser-plate 10, which is attached by radial spring-strips 20 to the flywheel 1. The usual driven disc 13 is Clamped between the flywheel 1 and presser-plate 10 when the windings are energized. The clutch may be as described in Specification 633,632; the coil-leads as in Specification 610,594, [Group XXXV], and the drive take-up winding 7 may be energized by an enginedriven generator, as in Specifications 610,519 and 635,792, or by the car battery with or without a variable resistance. Specifications 594,906 and 597,193, (Group XXVII], also arereferred to.
Patent GB-1393292-A (GB)
Title: Safety devices in combination with machine tools
IPC: F16P3/12
Filed: 1972-03-24
Abstract: 1393292 Machine safety device HUWOOD Ltd 22 Feb 1973 [24 March 1972] 13896/72 Addition to 1258279 Heading F2J The drilling machine safety device of the parent Specification 1,258,279, is modified by arranging the cable simply as a trip wire 30 positioned as before between the working area and the operator and tensioned between an anchorage 33 and a pull switch 32 which controls a micro-switch 37 in the energizing circuit 7, 8 of the fail-safe drop out relay 21 controlling the power supply to the machine whereby, unlike the parent Specification 1,258,279, the pull switch 32 is electrically connected independently of the trip wire 30 to the power supply control box of the machine. As before, the action of pulling, i.e. deflecting, the cable, i.e. wire 30, by the operator against a spring action 36 opens the contacts 37 in the pull switch 32 and the relay opens breaking the contacts 22 of the A.C. supply to the machine motor and closes the contacts 23 applying a D.C. supply thereto to rapidly stop the machine, a further set of contacts 24 also closing to operate an audible or visual alarm 25.
Patent GB-330371-A (GB)
Title: Improvements in and relating to show-cards, name plates and the like
IPC: G09F13/16
Filed: 1929-05-04
Abstract: 330,371. Gmach, L. T. May 4, 1929. Show cards of the type wherein an embossed, coloured design is formed on the rear side of a transparent or translucent celluloid or like sheet are characterized in that the front surface of the sheet is left smooth, the effect of relief being simulated by the embossing on the rear face. An additional metal, celluloid or other backing sheet may be provided, which may have a polished reflecting surface. A general coloured background may be provided in addition to the colouring of the design, either on the backing sheet, or else on the rear face of the embossed sheet.
Patent GB-353555-A (GB)
IPC: H01J40/16
Filed: 1930-05-06
Abstract: 353,555. Photo-electric cells. WESTINGHOUSE LAMP CO., Bloomfield, New Jersey, U.S.A.-(Assignees of Rentschler, H. C. ; 15, Monroe Avenue, East Orange, New Jersey, U.S.A.) May 6, 1930, No. 13906. Convention date, May 6, 1929. [Class 39 (i).] A photo-electric cell has a cathode of thorium sensitive only to radiation of wavelengths below 3900 A‹, and an envelope formed at least in part of such material or thickness as to be permeable to radiation of wavelengths below 3900 A‹, preferably 2900 A‹, and as short as 2400 A‹. As shown in Fig. 1, a plate-shaped thorium cathode 12 is mounted near a rod-shaped thorium anode 11, and a glow discharge is passed between the electrodes to clean them by sputtering, deposition of material on the envelope being prevented by a shield 21 which is moved along a frame 19 so as to cover the electrodes. Are-entrant dome or bulbous-shaped part may be formed in the envelope so as to provide a window 0À01-0À0001 inch thick. In a modification, a single plate cathode is mounted between two anodes. As shown in Fig. 6, the cell has two anodes 41, 42 which are cleaned by passing a glow discharge between them, deposition of material on the envelope being prevented by arranging the lower cylindrical part 49 of a movable shield so as to cover the anodes, the sputtered material collecting on the inside of the shield. The discharge is continued with the shield in the position shown, so that thorium is deposited on a layer 46 of gold on the envelope, deposition of material on the opposite side of the envelope being prevented by the upper semi-cylindrical part 55 of the shield. Subsequently the shield is moved to the lower end of the cell. Materials suitable for the envelope are those known by the registered Trade Marks " Corex," " Pyrex," " Vitaglass."
Patent GB-543653-A (GB)
Title: Vapour-proof manifold pressure gauge
IPC: G01L7/00
Filed: 1940-09-05
Abstract: 543,653. Pressure gauges. BENDIX AVIATION CORPORATION. Sept. 5, 1940, No. 13922. Convention date, Sept. 6, 1939. [Class 106 (ii)] Comprises a casing divided into two chambers by a partition, a pressure-responsive element in one chamber, a motion transmitting and/or indicating mechanism in the other chamber, and a flexible tubular element sealing an opening in the partition and transmitting motion 'from the element in one chamber to the mechanism in the other chamber, the flexible element having a rigid closure member pivoted about a fixed axis at right angles to the axis of the flexible element. An inner casing 10 having flanges 11 houses a pair of sealed aneroid chambers 14 around which is a pressure chamber 13. The rear flange 11 is sealed by a back plate 15 to which leads a con duit 17 conveying pressure fluid. The opening 20 in the top of the casing is closed by a pivoted plate 29 from which depends a conical supporting member 28 having extending arms 31. A ball bearing block 34 has integral therewith an extended arm 35 which is journalled between the parts 31 on adjustable screw pivots 36. The block 34 is rigid with the bellows yoke 25 which has an extension 2b connected by a ten-. sion member 38 with the diaphragm 14. Movements of the latter are thus transmitted to the member 38 and hence to the bellows which rocks about its pivots and rocks arm 35 which is connected by an adjustable arm 46 to a lay shaft 40 which in turn rocks through toothed quadrant and pinions 43, 58 the spindle 57 of a pointer 61. A hair spring 64 takes up back lash. A rim lighting for the dial is used. The bulb 68 transmitting light through a ring 71a of transparent material with the aid of another transparent ring 71.
Patent GB-879660-A (GB)
Title: Improvements relating to information storage apparatus
Inventor: HOFFMAN GEORGE RICHARD
IPC: G11C11/42
Filed: 1958-05-01
Abstract: 879,660. Light-utilizing devices. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 27, 1959 [May 1, 1958], No. 13954/58. Class 40(3) [Also in Groups XIX, XXXVI and XL(a)] Information storage apparatus comprises a plurality of units each unit consisting of a photo-conductive and an electro-luminescent element connected in series, each photo-conductive element being set to one of two states of conductivity according to the information to be stored, and means for detecting fluorescence of each of said electro-luminescent elements. Construction of unit. The photo-conductive element 2 and electro-luminescent element 3, Fig. 1, are deposited on a glass plate and connected to a source 4 of alternating current. The resistance of element 2 is normally high and element 3 is then inert. If element 2 is illuminated however, element 3 fluoresces and this state is detected by a photo-multiplier 6. In Fig. 3 two opaque photo-conductive elements 8, 9 are deposited on top of interleaved conductors 10, 11, 12, printed on a glass plate 1. The electroluminescent element 3 is deposited on top of the conductors 10 and is over-printed with a combelectrode 14. A D.C. bias to elements 8, 9 increases the light output of element 3. Storage matrix, Fig. 5. The photo-conductive element conductors are arranged in rows x‹, x 1  and the top electrodes of the electro-luminescent elements in columns y‹, y 1 . A punched card mask permits predetermined elements to be illuminated. Read-out may then be effected by energization of a row and successive column conductors. In Fig. 6 photo conductive elements 18, 19 are respectively in parallel and series with element 3. Fluorescence of element 3 occurs at illumination of element 19 but not of element 18. Coupling between the element 3 and elements 8, 9 may be effected via mirrors 20, 21, through a glass plate, Fig. 8.
Patent GB-477036-A (GB)
Title: Improvements in or relating to the manufacture of cellulose derivative compositions
IPC: C08K5/06
Filed: 1936-05-18
Abstract: A composition consists of or comprises essentially a cellulose ester of an organic acid particularly cellulose triacetate and an acetal containing seven or more carbon atoms obtained by condensing formaldehyde, acetaldehyde or other aldehydes with higher aliphatic, hydroaromatic or aromatic monohydric alcohols containing no oxygen-containing substituting group.  Halogen substituted monohydrin alcohols are particularly suitable.  The condensation may be effected at suitable temperature and pressure in the presence of a catalyst and/or dehydrating agent such as calcium chloride, lime chloride or a mineral acid.  Water formed during the reaction is preferably removed by an entraining agent such as benzene and the product obtained by distillation if desired under reduced pressure.  Examples describe the formation of films from solutions of cellulose triacetate in methylene chloride and alcohol or acetone and alcohol, the formals of cyclohexanol, benzoyl alcohol and dichlorhydrin being employed as plasticizers.  A further example forms films from cellulose triacetate and from cellulose aceto-crotonate using the formal of a hexyl alcohol as plasticizer.  Specification 318,980, [Class 2 (ii)], and 424,838 are referred to.
Patent GB-611847-A (GB)
Title: Improvements in or relating to photographic emulsions
IPC: G03C1/053
Filed: 1946-05-10
Abstract: 611,847. Photographic silver salt emulsions. DU PONT DE NEMOURS & CO., E. I. May 10, 1946, No. 14180. Convention date, May 29, 1945. [Class 98 (ii)] A photographic emulsion is made by heating an aqueous solution containing a polyvinyl alcohol of which at least 75 per cent of the hydroxyl groups are.unsubstituted and 20-150 per cent of its weight of dimethylolurea to a temperature of 60 to 100‹ C. until the resulting modified polyvinyl alcohol is insoluble in water at 20‹ C. but readily dissolves at 40-80‹ C., precipitating light sensitive silver salts into the solution, precipitating an emulsion as by addition of acetone or concentrated sodium sulphate solution, washing the precipitate to remove soluble salts and redissolving in warm water. Sulphur sensitisers, optical sensitising dyes and colour formers or dye intermediates may be added to the photographic emulsion and it may be digested. Layers may be formed by coating the emulsion on paper or film. Specifications 376,746, 436,587, 458,400, 458,664, 465,823, 479,838, 497,698, 512,542, 513,471, 519,895, 537,961, 538,100 and 554,302 are referred to.
Patent GB-143875-A (GB)
Title: Improvements in or relating to apparatus for sharpening knives and the like
IPC: B24D15/08
Filed: 1920-05-26
Abstract: 143,875. Myrtin, S. M. May 27, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. V-slot and like blade sharpeners.-A sharpener for knives &c. comprises two or more circular or elliptical sharpening - members 1 of emery, carborundum, stone, metal, &c. arranged side by side in staggered relationship so that their peripheries overlap to form the sharpening-V, and mounted in coverings 2 having a part removed to expose the sharpening-members and formed with guide-edges 7. The sharpening-members are pressed outwardly by means of springs 4 in the coverings, and the coverings have projecting strips or flanges 3 for attachment to a holder. One sharpening- member may be stationary and the other yieldingly mounted: the sharpener may be applied to the sharpening of scythes, in which case projecting fingers are provided on the coverings for protection of the hand.
Patent GB-725387-A (GB)
Title: Improvements in sensitised photographic emulsions
IPC: G03C1/29
Filed: 1953-05-22
Abstract: 725,387. Supersensitizing photographic emulsioris. KODAK, Ltd. May 22, 1953 [May 23, 1952], No. 14407/53. Drawings to Specification. Class 98 (2). Photographic silver-halide emulsions are supersensitized with at least one meso-substituted carbocyanine dye of the general formula wherein R and R<SP>1</SP> represent substituted or unsubstituted alkyl groups, D represents an alkyl or aryl group, X represents an anion and Z and Z 1  complete heterocyclic nuclei of the benzthiazole, benzselenazole or #-naphthathiazole series, and at least one mersocyanine dye of the general formula wherein R 2 , R 3  and R, represent substituted or unsubstituted alkyl groups, R 5  represents a hydrogen stom, or an alkyl or aryl group and Z 2  completes a heterocyclic nucleus of the benzthiazole or #-naphthathiazole series. The groups R and R 1  may be methyl, ethyl or #- hydroxyethyl, D may be methyl, ethyl or a mononuclear aromatic group of the benzene series such as phenyl or 0-, m-, or p-tolyl, X may be chloride, bromide, iodide, p-toluenesulphonate or benzene sulphonate and R 2 , R 3  and R 4  may be methyl, ethyl, n-propyl, n-butyl, nheptyl, #-hydroxyethyl, carbethoxymethyl, #- methoxyethyl, #-ethoxyethyl or #-hydroxy-#- ethoxy-#-ethoxyethyl. R 5  is preferably methyl or ethyl, but may be phenyl or o-, m-, or p-tolyl. Suitable dyes and super-sensitizing combinations are specified. Specifications 378,870, [Group IV], 378,885, 394,692, [Group IV], 489,335, 498,031, 498,289, 498,290, 498,291, 581,772, 599,693and 676,164 and U.S.A. Specification 2,058,406 are referred to.
Patent GB-408821-A (GB)
Title: Improvements in and relating to golf clubs and methods of making the same
IPC: A63B53/02
Filed: 1933-05-18
Abstract: 408,821. Golf clubs. BRITISH THOMSON-HOUSTON, CO., Ltd., Crown House, Aldwych, London.-(Assignees of Mansur, C. W.; 32, Spruce Street, Malden, Massachusetts, U.S.A.) May 18, 1933, No. 14435. Convention date, May 19, 1932. [Class 132 (ii).] A golf club comprises a head 1, Fig. 1, moulded directly on to a hollow steel shaft 2, the head being formed of relatively small pieces of woven textile material united and held in a highly compressed state by an artificial resin. The bond between the head and shaft is improved by roughening the material of the shaft at the end 5, or by attaching to the shaft a wrapping of wire mesh or a perforated cylinder. The sole of the club head is provided with a recess 8 divided by a reinforcing wall 9 and enclosed by a sole plate 10. The means for moulding the heads comprise an hydraulic press 20, Fig. 4, carrying a lower mould section 15. An upper mould section 16 is slidably supported on shouldered posts 24. The hollow steel shafts 2 are inserted within shaped cavities between the mould sections and held by clamping screws 32. Reinforcing rods 38 are passed upwardly through the shafts to prevent their collapsing under the moulding pressure, such rods being urged upwardly by cams 39 to press the shaft ends into engagement with shoulders 34. Slugs 41 of artificial resin mixture are inserted into the cavities through ports 27 and the press actuated to force the slugs upwardly into engagement with dies 28 fixed to the posts. The resin is cured by heating while under pressure. Reference has been directed by the Comptroller to Specification 380,260.
Patent GB-612157-A (GB)
Title: Improvements in and relating to drilling apparatus
IPC: B23B47/28
Filed: 1946-05-13
Abstract: 612,157. Drilling-jigs. SULGER, A. May 13, 1946, No. 14436. Convention date, Dec. 15, 1945. [Class 83 (iii)] In apparatus for drilling bodies of revolution radially, in which the work 24 is centred and clamped between a prismatic bearing 7 on a vertically adjustable table and a bush 3 in a fixed arm 1a of a standard 1, the table is carried by a hollow spindle 5 guided internally by a hollow column 10 connected to the standard 1 and externally by a cylindrical bore in the upper end of a nut 6 axially fast but rotatable in a bore in the standard, the spindle being externally threaded at its lower end to engage the nut. The bearing 7 carries two axially movable graduated bars 12, 13, joined by a member 14 and carrying a slidably mounted end-stop 22. An assembly 35, 36, 35, 32, Fig. 16, is provided to clamp the workpiece to the member 14 so that a series of holes may be drilled in the same vertical plane. Subsidiary bearing pieces may be fitted in the block 7 for cylindrical or spherical workpieces.
Patent GB-217604-A (GB)
Title: Improvements relating to aerial transport of goods
IPC: B64C35/00
Filed: 1924-06-14
Abstract: 217,604. Veraart, A. W. June 14, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Cabins.-Passengers and goods on aircraft are carried in hermetically closed spaces which are partially exhausted of air during flight so that the leaded lateral and underneath walls are reinforced by the external air pressure and may consequently be made lighter. To reinforce the floor when alighting on water the air pressure in the spaces may be raised. Excess pressure may also be introduced when flying without load.
Patent GB-501824-A (GB)
Title: Improvements in or relating to wireless reception apparatus
IPC: H03J1/06
Filed: 1937-05-25
Abstract: 501,824. Adjusting wireless apparatus. ELIAS, M. May 25, 1937, No. 14512. Convention date, May 25,1936. [Class 37] [Also in Group XL] The shaft B of the tuning condenser of a radio-receiver is adjusted through an eccentric pulley disc A by a wire R which is adjustably secured to the disc at G, passes around its periphery over a guide pulley and ends in a peg P, S, adapted to be inserted in any of a series of holes 0 corresponding to transmitting stations the names of which are indicated adjacent the holes. The disc A is biassed by a spring D and weight U towards the terminal position shown, determined by a rubber stop pin F on the disc abutting against a frame member, where a projection E breaks the main circuit to the receiver at contacts W, Y, this circuit closing immediately the disc A moves from its terminal position. The peg P, S, fits frictionally in the holes 0 and is provided with an eccentric T acting on the wire R whereby rotation of the peg when in a hole O permits fine adjustment of the tuning. The peg P, S, when in a hole 0 passes through and contacts with two plates L. The plate K is in one piece but the plate L has as many insulated sections as there are wave bands, and the plates K, L are connected to an electromagnet system J .controlling the wave-range switch whereby the insertion of the peg into any hole 0. tunes in the corresponding station, operates the wave range switch, and lights a lamp a or a<SP>1</SP> to illuminate the appropriate station scale. In a modification, the peg is arranged to move within a slide whereby the wire R is kept entirely within the casing of the receiver. Auxiliary controls, e.g. volume control, are operated by rotating legs of the cabinet.