baber/WOPTO huggingface dataset:
Patent GB-595281-A (GB)
Title: Improvements in the treatment of paper
IPC: D21H21/30
Filed: 1945-04-12
Abstract: 595,281. Paper containing fluorescent substances. LEVER BROS. & UNILEVER, Ltd., and THOMAS, R. April 12, 1945, No. 9135. [Class 96] Derivatives of di-aminobenzoylamino-stilbene-sulphonic acids, exhibiting blue fluorescence, in which at least one H atom in each NH2 radical attached to the terminal rings is substituted by an organic radical not containing a NH2 radical directly on an aromatic nucleus, are added to paper pulp, e.g. to cleaned, bleached pulp, or to paper as by spraying, by water doctor or by immersion, to incorporate up to 1.0 per cent of the fluorescent substance to give enhanced whiteness not noticeably affected by prolonged exposure to light. Methyl, benzoyl, and acetyl radicals and, e.g. 4 : 4<1>-di-p-ureidobenzoylamino-stilbene-2 : 2<1>-disulphonic acid are mentioned. The product may be used for wrapping goods to protect them from ultra-violet light. Specifications 442,530 and 522,672 are referred to.
Patent GB-119427-A (GB)
Title: Improvements in or relating to Draw Plates.
Inventor: DRESDEN GEORGE
IPC: B21D5/08
Filed: 1918-06-03
Abstract: 119,427. Dresden, G. June 3, 1918. Rods and bars.-A channelled strip is produced in a machine of the kind in which a draw-plate has four loose rollers relatively adjustable. The roller A projects between the two rollers A<1>, A<2>, A<3> being the back roller. Each roller is loosely mounted on a spindle C clamped in a shoe D. Each shoe is adjustable between guide-blocks F screwed to the frame G, by screws H. The strip B to be operated on is drawn through adjustable guides N. The rollers may be provided with intaglio or .embossed markings for impressing on the strip.
Patent GB-431084-A (GB)
Title: Improvements in hinges for desks and tables
IPC: A47B41/02
Filed: 1934-03-24
Abstract: 431,084. Hinges. KINGFISHER, Ltd., Charles Street, West Bromwich, and CHATWIN, A., Wightwick House, Wightwick, Wolverhampton. March 24, 1934, No. 9244. [Class 65 (ii)] A hinge for a desk lid or table flap comprises a bar pivoted to a dished member having a flanged fixing part and a sectoral dished part forming a recess in which a tail portion of the bar can move. A form adapted for a desk lid, shown from the inside, comprises a plate p, having a flanged part m for fixing to the desk top and deeper flanged parts h, j for fixing to the desk body, and a bar e fixed to the lid pivoted to the plate p at f and provided with a tail portion q which moves in the sectoral recess formed by the flanged parts h, j, m, this tail being concealed by the plate p. Movement of the bar e is limited by engagement of the tail q with the flanged parts m, j respectively, and in the latter position any load is taken off the pivot pin by part of the bar e on the other side of the pivot engaging the end of the flanged part m. The bar e is preferably of angle or like rigid section, and extends along the edge of the lid to strengthen it. A drainage opening is provided between the flanged parts h, j.
Patent GB-222052-A (GB)
Title: Improvements in splash preventing attachments for motor vehicles
IPC: B62D25/18
Filed: 1924-04-12
Abstract: 222,052. Anderson, C. April 12, 1924. Lateral-splash guards.- A splash guard 9 mounted on a spring-urged rod held in a tube 1 having a slot 3 cooperating with a member 4 of oval cross-section is allowed to rise when a link 6 pivoted at 7 is struck by an obstacle so that the member 4 is turned to enter the slot. The member is mounted on a toothed disc 12 which gears with a quadrant 10 pivoted at 11 and connected to rods 14. To restore the guard to operative position a striker 18 on the rod 2 engages a lever 16 having a pin-and-slot connection with an eccentric disc 25 embraced by a strap 26 having a slidable arm 27 carrying a friction wheel 15. This wheel is thus brought into contact with the conical surface 15<a> of the wheel hub and winds a wire 20, attached at 21 to the rod 2, on to a drum 19. A spring urged latch 23 retracts the wheel 15. Specification 214,804 is referred to.
Patent GB-495023-A (GB)
Title: Improvements relating to the manufacture of vinyl polymerisation products
IPC: C08F12/12
Filed: 1937-04-01
Abstract: Polymerized a -methyl styrene is produced by subjecting a mixture of styrene and a -methyl styrene to the action of concentrated sulphuric acid at ordinary temperature, whereby the a -methyl styrene is polymerized leaving the styrene substantially unchanged, and then separating out the polymerization product. The polymerization may be effected with or without the presence of a solvent or a diluent, the sulphuric acid may be from 70-90 per p  cent strength, and the polymerized a -methyl styrene may be recovered, as an oily residue, by distilling off the unchanged styrene with steam or under reduced pressure.  In examples, a mixture of styrene, a -methyl styrene and isopropyl benzene is shaken with sulphuric acid, allowed to stand, and the aqueous acid layer removed; the hydrocarbon layer is then washed with water and alkali, and distilled under reduced pressure to a yield a distillate consisting of styrene and isopropyl benzene, and an oily residue consisting mainly of lower polymers of a -methyl styrene.  The polymerized a -methyl styrene may be used as a plasticizer for coumarone resins or for hydrocarbon resins such as polystyrene and polyindene.  Samples have been furnished under Sect. 2 (5) of the product of example 1, and of the product obtained by shaking a mixture of styrene and a -methyl styrene with sulphuric acid and separating the polymer.  In the Provisional Specification, the process is applied to the production of polymerized a -alkyl styrenes in general.
Patent GB-322146-A (GB)
Title: Improvements in or relating to the ornamentation of pencils and the like
IPC: B43K19/16
Filed: 1929-03-22
Abstract: 322,146. Schwarz, A. March 22, 1929. Stencils and stencilling.-Designs are applied to rod-shaped writing appliances such as pencils, pen-holders, and eraser-holders by spraying colour thereon while they are screened by templates and are maintained in continuous rotary or rolling movement. The templates may consist of a helically-wound strip 1 of material having rings 2 at each end, and the pencil 3 is inserted therein. The templates are supported on tracks 5 in a stationary frame 6 and the rings 2 engage between teeth on longitudinally-displaceable members 4 carried by a sliding carriage 7.
Patent GB-838893-A (GB)
Title: A process for the production of mechanical wood pulp and newsprint produced therefrom
IPC: D21B1/12
Filed: 1958-03-24
Abstract: 838,893. Preparation of paper pulp. DUETSCHE GOLDUND SILBERSCHEIDEANSTALT VORM. ROESSLER. March 24, 1958 [April 5, 1957 (2)], No. 9358/58. Class 96. Wood, for the production of mechanical wood pulp, is treated prior to or during grinding, with an alkaline solution of peroxidic compounds which yield oxygen, e.g. hydrogen peroxide, or sodium peroxide, perborate, percarbonate, or perphosphate, together with e.g. caustic soda, alkali silicates, and wetting agents &c. There may be 0.2 to 1.2 parts of active oxygen per 100 of dry wood, and the pH value may be maintained at e.g. 12 to 13, e.g. until after thickening, when the pulp is neutralized with sulphuric acid. Kaolin, dye, resin size, and alum may be added to the mechanical wood pulp thus made. Preferably appreciable bleaching does not occur. The pulp may be used alone or with some cellulose.
Patent GB-434217-A (GB)
Title: Improvements in or relating to the stemming of tobacco or other leaves
IPC: A24B5/02
Filed: 1934-03-26
Abstract: 434,217. Stripping tobacco &c. leaves. DEARSLEY, G., and MOLINS MACHINE CO., Ltd., 2, Evelyn Street, Deptford, London. March 26, 1934, No. 9396. [Class 130] A machine for stemming tobacco or other leaves comprises a moving conveyer surface having a stemlocating groove or grooves, means to grip the stem of a leaf when the stem is in a groove and to move the leaf tip first, means to sever the stem between the point at which it is gripped and the tip of the leaf, and a stripping device lying in or contiguous to the path of the gripper to engage the leaf as it moves forwards and to hold back the tip of the leaf and strip the leaf as the stem is pulled past the stripper. In one form, Figs. 1 and 3, the leaves are fed by hand from a table 10 to a rotatable drum 11 having a circumferential groove formed between an abutment 26, Fig. 3, and the edge 27 of a gripper 13 attached by a flexible steel strip 22 to the frame of the drum. The gripper carries a roller pressed by a spring against a cam 24, so that the gripper moves into engagement with the leaf stem just after passing the table 10. The leaf is carried under a rotary or other knife 14 which severs the stem at a point 15, Fig. 4, nearer to the tip than the point 28 at which the stem is gripped. The leaf is then stripped from the stem by a carded roller 16, and a further roller 17 may remove the leaves and deposit them in a container 18, the stems being collected in a box 190 when released by the grippers. In modifications, (1) a suction drum replaces the carded roller 16, and in this and the previous construction a smooth pressing roller in front of the suction drum may press the leaf on the drum 11 ; (2) the leaves pass during the stripping operation over stationary steel, cotton or other bands which lie on either side of the circumferential groove in the drum; (3) endless bands are used instead of stripping rollers. The Provisional Specification also comprises modifications in which (1) the gripper passes between two pairs of co-operating stripper rollers movable laterally to enable the gripper to pass between them ; (2) the grippers are mounted on a drum or other movable member or moved alternately to a surface, the surface of the movable or fixed member being ridged, and the stripping device consists of three ridged carded rollers, two having their axes at right angles to the direction of movement of the gripper and the axis of the third being parallel to the axis of the drum on which the grippers are mounted ; (3) the grippers extend between a slotted stationary or movable surface and a stripping plate or band moved towards and away from the surface.
Patent GB-860179-A (GB)
Title: Improvements in or relating to material transfer systems
IPC: B65G37/00
Filed: 1958-03-24
Abstract: 860,179. Endless conveyers; feeding skips in skip hoists. MOTTRAM, G. S. June 18, 1959 [March 24, 1958], No. 9415/58. Classes 78 (1) and 78 (4). Three endless belts. 4, 15, 16 form respectively the floor and vertical side walls of a conveying channel for feeding material from a feed shoot 33 to a skip in a skiphoisting installation. Belt 4 is carried on a series of rollers 5 which are drivingly interconnected by a series of chains engaging sprockets 9 on the shaft of each roller, a variable-speed hy. draulic motor 8 being connected to one of the roller shafts to drive all the rollers simultaneously. Alternatively, belt 4 may be composed of an endless series of articulated plates. Each of the belts 15, 16 is suspended from a rail 19 by hangers 17 carrying rollers 18. Outward movements of the belts 15,16 is prevented by backing- plates 20 each provided with two rows of slots 21 through which project idler rollers each of which is formed`by a plurality of discs freely mounted on a fixed vertical shaft. The framework which carries the conveying and supporting members is mounted by wheels 29 for movement on rail tracks 32 transverse to the direction of conveyance so that material can be fed from any one of a number of hoppers.
Patent GB-850572-A (GB)
Title: Improvements in or relating to solid state image producing screens
IPC: H01L31/14
Filed: 1959-03-19
Abstract: 850,572. Television. WESTINGHOUSE ELECTRIC CORPORATION. March 19, 1959 [March 25, 1958], No. 9533/59. Class 40(3). [Also in Groups XXXVI and XL(a)] The light power potential applied to electroluminescent material in a solid state image producing screen is controlled by non linear dieelectric material in accordance with a control voltage established across the dielectric when applying a biasing voltage through a photoconductive material so that the control voltage and hence the light power potential applied to the electro-luminescent material vary with the intensity of radiation applied to the photo conductive material and the magnitude of the biasing voltage. As shown in Fig. 1 the electro-luminescent material is formed as a layer 13 between a transparent electrode 12 on a glass support 11 and an opaque conducting layer 14. Squares of ferro-electric or non linear dielectric material 16 are located on one limb of electrode 15, the other limb supporting photo-conductive elements 18. Bus bars 17 supply a.c. light power potential to the electrodes 15 through the dielectric squares 16 and a layer 19 forms a transparent electrode for the photoconductive elements 18. A suitable circuit arrangement is shown in Fig. 2 and with switches 22, 24 in position a the screen may be sensitized by flooding the receiving side with radiation so as to lower the conductivity of elements 18 and applying full control voltage from battery 21 to the ferro-electric squares 16. With switches 22, 24 in position b an image to be intensified is projected on to the receiving side and the ferroelectric squares 16 under the control of voltages from the photo-conductive material 18 discharge to an image pattern and thereby permit, with switches in position c, the application of light power potential from source 23 to the electroluminescent material in the same pattern. The storage property of the ferro-electric material permits maintenance of the output image. A voltage divider circuit may be used to derive the control voltage for the ferro-electric material. Instead of an incident radiation image a light spot scanner may be provided which connects each photo-conductive circuit in timed sequence to a video generator supplying the image information. In a further embodiment two photoconductive elements are provided in voltagedivider relationship with each ferro-electric electro-luminescent element.
Patent GB-622874-A (GB)
Title: A device for removing deposit from the internal walls of pipes and the like
IPC: B08B9/04
Filed: 1947-04-10
Abstract: 622,874. Pipe-cleaning tools. GENERAL DESCALING CO., Ltd., and WEBB, L. W. April 10, 1947, No. 9535. [Class 99(ii)] A pipe-scraping tool adapted to be propelled or assisted through the pipe by fluid pressure comprises one or more piston units 3 and scraper units 4 strung on a wire rope 2 and separated by spacers 5. A guide comprises rearwardly curved resilient arms 11, and the scraper blades have transverse cutting edges 15. A scraper unit comprises a boss 12 having a number of flanges 13, each carrying a number of rearwardly inclined spring scraper blades 14, the blades of the sets being arranged to cover the whole surface of the pipe. The diameter of each set of blades may increase rearwardly of the unit. The piston units include resilient rings 21, and the spacing between piston units should exceed the bore of branch pipes. The spacers 5 are received in sockets 25, and the units are urged together by a spring 6.
Patent GB-960411-A (GB)
Title: Improvements in or relating to unsaturated hydrocarbon polymers
IPC: C08F36/04
Filed: 1960-03-17
Abstract: A process for the production of solid, self-drying olefine copolymers comprises polymerizing propylene or butene-1 with isoprene in the presence of a solvent and of an aluminium halide as catalyst, the catalyst being used in 2.4x10-3 to 3.2x10-3 moles per mole of monomer in the case of propylene or 2.4x10-3 to 3.6x10-3 moles per mole of monomer in the case of butene, the mole ratio of isoprene to mono-olefine being between 0.6:1 and 0.9:1 and the reaction being such that the yield of polymer is between 8 and 35% Specified reaction ingredients are aluminium chloride, bromide or chlorobromide as catalyst, alkyl chloride or aliphatic hydrocarbon as solvent, and methanol as catalyst deactivator and as polymer precipitant. Preferably the reactants and solvent are anhydrous.  The self-drying products find application in paints, varnishes and lacquers.
Patent GB-431168-A (GB)
Title: Manufacture of improved pigment powders
IPC: C09B67/20
Filed: 1934-03-27
Abstract: 431,168. Pigment compositions. SOC. OF CHEMICAL INDUSTRY IN BASLE, Basle, Switzerland.-(Assignees of Widmer, G. ; 70, Oberer Batterieweg, Basle, Switzerland) March 27, 1934, No. 9556. Convention date, March 27, 1933. [Class 95] A pigment powder, which can be used in the manufacture of oil colours, printing colours, varnishes, and linoleum, contains a carbamide-formaldehyde condensation product which has been brought, by heat treatment, into an insoluble and non-plastic condition, together with a pigment which, under the prevailing conditions of the manufacture of the powder, is not converted into a lake. Specified condensation products are those from formaldehyde and urea, thiourea, dicyandiamide, biuret, guanidine, guanyl urea, cyanuric acid or phenyl urea, while suitable pigments are ochre, umber, lampblack, ferric oxide, prussian blue, ultramarine, chrome green, indigoid and anthraquinoid dyestuffs, sulphur dyestuffs, insoluble azo-dyes, and pigments which are themselves colour lakes. The necessary heat-treatment of the condensation product may be carried out before, during or after mixing with the pigments. According to examples : (1) Indanthrene Blue G.G.S.L. is ground with a varnish consisting of a solution of a formaldehyde-urea condensation product containing added thio-urea, the mixture is heated for 4 hours at 130‹ C., and the product reduced to a fine powder. (2) Lampblack is suspended in water, the varnish of example 1 added, and dilute hydrochloric acid stirred in. The curdy precipitate encloses the lampblack and, after filtration, the product is dried at 80‹ C., and pulverized. (3) A heat-treated carbamideformaldehyde condensation product is finely powdered, and ground with indigo.
Patent GB-556508-A (GB)
Title: Brake-straps for wheels of perambulators
IPC: B62B9/08
Filed: 1942-07-14
Abstract: 556,508. Straps. ROBATHAN, E. O. July 14, 1942, No. 9769. [Class 109] [Also in Group XXXIV] A brake-strap for a perambulator wheel comprises two strap-lengths 1, 2 connected by a ring 3, means for attaching the strap-length 2 to the perambulator body or frame and which may comprise a further strap-length 8 and buckle 8', and a bar 9 attached to the other end of the strap-length 1 and which is .threaded through and engaged with the ring 3 after the straplength 1, has been passed around the wheel rim between the spokes. The bar 9 is attached to the strap-length 1 by a ring 5 and an eye 7 having a swivelling connection with the ring. A spring hook for engagement with the ring 3 may be substituted for the bar 9.
Patent GB-264696-A (GB)
Title: Improvements in or relating to tins, canisters and the like
IPC: B65D43/02
Filed: 1926-04-14
Abstract: 264,696. Robinson & Co., Ltd., F., and Robinson, F. G. April 14, 1926. Opening by tearing.-In tins of the type wherein the flange of the lid is formed with a weakening groove 4 and the edge of the lid is soldered to the tin, a tongue or tag 5 is provided on the flange of the lid below the weakening groove to facilitate opening. The lower edge of the flange 3 is soldered to the bead 7 of the tin, and solder may also be applied round the recess in the flange formed by the cutting out of the tag and also to a portion of the underside of the tag to effect hermetic sealing. In a modification the end of the tag projects downwardly below the beading 7, the non-projecting portion of the tag being formed by a weakening line across the lower part of the flange 3. Reference has been directed by the Comptroller to Specifications 4486/92, 16457/95, and 17992/04.
Patent GB-327283-A (GB)
IPC: G03C5/315
Filed: 1929-03-27
Abstract: 327,283. Jos-Pe Farbenphoto-Ges. Feb. 16, 1929, [Convention date]. Plates and films.-A film or plate for the production of wash-out gelatin reliefs is coated with a mixture of a small proportion of higbly sensitive silver halide emulsion with a large proportion (85 per cent-95 per cent) of a less sensitive emulsion. The film may be subjected to pre-exposure to uniform light from the support side, and a powerfully acting screen colouring material mav also be added to modify the height of the relief.
Patent GB-1062792-A (GB)
Title: An improvement in or relating to sparking plug spanners
Inventor: GALLEY GERALD JACK
IPC: B25B13/48
Filed: 1964-03-09
Abstract: 1,062,792. Spanners. THOMAS MELDRUM Ltd. March 4, 1965 [March 9, 1964], No. 9829/64. Heading B4W. The tubular body part (10) of a box spanner having an hexagonal aperture (12) adapted to engage with the hexagonal nut portion of a sparking plug, is provided with an insert (18) of rubber, synthetic plastic or other moulded material. The insert is forced into the body so as to be a permanent fixture therein and has a control aperture of such a size that the spanner is a push fit over the terminal portion of a plug of standard diameter to which it is applied.
Patent GB-1440711-A (GB)
Title: Forming moulded alloy sheet material
IPC: B21D26/055
Filed: 1974-03-05
Abstract: 1440711 Shaping superplastic alloy sheet ISC ALLOYS Ltd 12 Feb 1975 [5 March 1974] 9868/74 Heading B3Q An article is made of superplastic alloy sheet by shaping the sheet to form a projecting area using differential fluid pressure when the sheet has been rendered superplastic, and using a saw to cut an aperture in or trim an edge on the shaped sheet by removing the projecting area. Cutting and trimming operations are performed by a rotary saw the blade of which may be parallel to the general plane of the sheet or at an angle thereto. An aperture 5, Fig. 1, is cut by the saw 4 through the side wall 3 of a projection 2 formed to the required size. The resulting lip 6 may be bent flat or removed by machining. Projecting side areas may be cut away to form arches, or the flanged edge may be trimmed, Figs. 2 and 3 (not shown).