baber/WOPTO huggingface dataset:
Patent GB-1098787-A (GB)
Title: Production of vitreous silica
IPC: C03C3/06
Filed: 1966-08-22
Abstract: Vitreous silica aggregate containing not more than 10% cristobalite is continuously prepared by applying a coating of alumina or alumina-containing material to a crystalline quartz raw material, continuously feeding the coated material to a rotary kiln, removing the product from the kiln and quenching it to form the vitreous silica aggregate.  The temperature of the kiln is maintained above the equilibrium melting point of the quartz raw material and below that of the cristobalite, and the material is heated in the kiln for a sufficient time (not exceeding 1.5 hrs.) to form a predominantly amorphous form of the material.  The crystalline quartz raw material has an average crystal diameter of up to 10 microns and contains negligible intercrystalline material.  The amount of alumina or alumina-containing material added is sufficient to provide from 0.25 to 1 part of alumina per 100 parts of quartz raw material.
Patent GB-946782-A (GB)
Title: Still picture optical projector
IPC: G03B23/18
Filed: 1960-11-01
Abstract: 946,782. Optical projection apparatus. AGFA A. G. Nov. 1,1960 [Nov. 7, 1959], No. 37572/60 Heading G: A slide projector has two holders for supporting two slides in parallel relationship and separated axially in the projection beam so that when the image of one is focused on the projection screen the outlines of the other image are not discernible, and means for effecting relative movement between the two slide holders on the one hand and the objective on the other hand to select either slide. As shown in Fig. 1 two slides 16 and 17 are mounted in springy retaining members 14a, 14b and 15a, (15b) movable into the axis of objective 7 along guide channels 11 and 12 by means of rods 20, slidable through bearing openings in the slidecarrying members 14 and 15 but held rigid with them by compression springs 23 constrained by lugs 22 which bear against the members 14 and 15, until the slide carriers are correctly positioned by abutment against the ends of the channels 11, 12 whereupon further pressure on rods 20 overcomes the stiffness of the springs and either one may be pushed further to pivot bar 40, rigid with a spindle 38, clockwise or anticlockwise as the case may be. This pivotal movement is transmitted through the lever system shown to an objective sleeve 9 which thus receives axial movement in a direction determined by the sense of rotation of bar 40, thus effectively placing either slide 16 or 17 at the correct position, relative to the objective, for sharp projection. (The slight change in the long conjugate is insignificant). That slide not in the correct position may be withdrawn and changed without disturbing the continuity of projection. Alternatively, the objective may be fixed and motion imparted to the slide carriers, which are then mounted, preferably on a single common carriage, for movement along the axially-extending rails indicated, by means of a V-block forming a cam surface against which the rods 20 bear and thereby receive thrust in the direction of the optical axis.
Patent GB-337649-A (GB)
Title: Improvements in or relating to cans or like containers or receptacles
IPC: B65D45/28
Filed: 1929-12-09
Abstract: 337,649. May, O. Dec. 9, 1929. Stoppers hinged at one side.-A can &c. provided with a hinged cover with closing means at one end of a bar attached to the cover of the toggle type, is formed with a device for preventing accidental opening by locking a member of the toggle to the bar. The toggle consists of a lever l pivoted to the bar i at n and a hook l<1> adapted to engage a member m on the container. The lever l is provided with a depending pin p, slotted at q to accommodate a bent portion of a spring r. The spring may be released by pressing a button s attached thereto which projects through the side of the bar.
Patent GB-1010651-A (GB)
Title: Manufacture of metal nitrides
Inventor: GOODING RONALD WILLIAM
IPC: C01B21/06
Filed: 1960-11-03
Abstract: A solid body of a metallic nitride, e.g. of Ti, Zr, Hf, Th, V or Cr, is formed by compacting, under heat and pressure, the powdered metal or its hydride to form a porous body of the desired shape, converting the hydride if present to metal, and heating the metal in a nitriding atmosphere at high temperature, e.g. below the m.p. of the metal, 1200-1400 DEG  C. for Ti; 1400-1450 DEG  C. for Cr.  The compacted <PICT:1010651/C1/1> body may be sintered and may be machined to exact shape before nitriding.  Nitrogen for nitriding may be purified by successive passage through silica-gel, phosphorus pentoxide, a dust filter and a charcoal trap cooled in solid CO2/acetone, and is passed into a heated alumina tube 1 containing a crucible of titanium metal 9 to be nitrided, embedded in titanium powder 11, contained in an alumina crucible 10i The alumina crucible may be closed by titanium foil 12.  The manufacture of a chromium nitride crucible is also exemplified.
Patent GB-1361608-A (GB)
Title: Supporting struts for building panels eg formwork panels
IPC: E04G17/14
Filed: 1970-08-05
Abstract: 1361608 Formwork support ACROW (ENGS) Ltd 3 Aug 1971 [5 Aug 1970] 37845/70 Heading E1S [Also in Division F2] A soldier for supporting formwork, e.g. of the lattice girder type, is connected at its ends to adjacent vertically aligned soldiers by means of a spigot 10 projecting from one end of the front longitudinal member 4 and having a transverse groove 12 in its end face, which spigot is received in an open end of the front member of the adjacent soldier having a pin 20 fixed transversely therein to mate with the groove 12 and form an abutment for the spigot, which is thereby located such that transverse holes 22, 24 in the spigot and in the open end are aligned, and a securing pin is then inserted through these holes. The spaced-apart ends of the rear longitudinal members 2 of adjacent soldiers are connected by members of adjustable length, e.g. screw jacks, which may each comprise a pair of telescoping tubes, the inne tube having a transverse pin extending outwardly through a slot in a screw-threaded portion of the outer tube which carries two nuts, one on each side of the pin, or a pair of oppositely screw-threaded rods connected by a nut. Such adjustable members may have a transverse opening to facilitate the installation of the formwork ties.
Patent GB-1070008-A (GB)
Title: Phenol phosphite complex stabilisers for plastics
IPC: C07F9/145
Filed: 1963-09-26
Abstract: Phenol-phosphite complex compounds are prepared by reacting 8 to 12 mols. of a triorgano phosphite, 4 to 6 mols. of a polyol, and 1 1/2 to 4 mols. of an aromatic material having 2 to 6 phenolic hydroxyl groups at 60 DEG  to 180 DEG  C., stripping off the by-products, and recovering the reaction product.  A basic catalyst, e.g. an amine or sodium phenate, hydride or hydroxide may be used.  Several triaryl and trialkyl phosphites are specified, some of the former being substituted by Cl or Br. Numerous polyols are specified, some of which contain phosphorous, e.g. trishydroxymethyl phosphine or its acetate, while some of the many specified phenols contain sulphur and linear and cyclic ether oxygen.  Exemplified compounds are those obtained by reacting triphenyl phosphite with pentaerythritol and either (a) 4,41-isopropylidene diphenol (molar ratio 7.5/4.5/2.25), (b) 4,41-dihydroxydiphenyl sulphide (1.5/0.9/0.45), or (c) phenol-formaldehyde novolak (1.5/0.9/0.28); and tributyl phosphite / trimethylolpropane / 4,41 -isopropylidene diphenol (1/0.67/0.5).ALSO:Phenol-phosphite complex compounds are prepared by reacting 8 to 12 mols. triorgano phosphite, 4 to 6 mols. of a polyol, and 1 1/2 to 4 mols. of an aromatic material having 2 to 6 phenolic hydroxyl groups at 60 DEG  to 180 DEG  C., stripping off the by-products, and recovering the reaction product.  A basic catalyst, e.g. an amine or sodium phenate, hydride or hydroxide may be used. Several triaryl and trialkyl phosphites are specified, some of the former being substituted by Cl or Br. Numerous polyols are specified, some of which contain phosphorus while some of the specified phenols contain sulphur and linear and cyclic ether oxygen. Exemplified reaction products are triphenyl phosphite / pentaerythritol / 4,41 - isopropylidenediphenol (7.5/4.5/2.25 moles); triphenyl phosphite / pentaerythritol / 4,41 - dihydroxydiphenyl sulphide (1.5/0.9/0.45); triphenyl phosphite / pentaerythritol / phenol - formaldehyde novolac (1.5/0.9/0.28); and tributyl phosphite/trimethylolpropane / 4,41 - isopropylidene diphenol (1/0.67/0.5).  Stabilized polymers.-The above products are useful as stabilizers for vinyl and vinylidene resins, e.g. P.V.C. plasticized with dioctyl phthalate and containing barium cadmium laurate; G.R.S. rubbers; ethylene and propylene homo- and co-polymers; polycarbamates and polyacrylonitrile.
Patent GB-369625-A (GB)
Title: Improvements in prepayment gas meters
IPC: G07F9/06
Filed: 1930-12-17
Abstract: 369,625. Prepayment gas meters. KIRKEWHITE METERS Ltd., (formerly KIRKEWHITE ENGINEERING CO., Ltd.), and GOLDSPINK, G. E., Gladstone Street Works, Hyson Green, Nottingham. Dec. 17, 1930, No. 38007. [Class 27.] Money boxes or receivers.-The coin receptacle A, Fig. 4, of a prepayment gas meter is disposed at the side of the body B, Fig. 3, of the meter and is detachably connected thereto by two hook members C engaging in openings D<1> near the front edge of a plate D attached to that side. This arrangement constitutes a hinge about which the receptacle A can be turned to a limited extent. The receptacle is also provided with a downwardly projecting rib F to engage a channel formed as shown by turning up the lower edge of the plate D. An extension F<1> of the rib forms a stop to engage the outer end of the channel. The rear outer corner of the prepayment mechanism compartment K may be formed with a dependant part L to engage with the rear outer upper corner of the receptacle. The receptacle is locked by an upward slotted extension of its front fitting over the same fixed stud as the cover of the prepayment mechanism, the receptacle and cover being secured by a padlock passed through a hole in the stud.
Patent GB-1108667-A (GB)
Title: Process for the production of motor vehicle petrols with a high road octane number
Inventor: KAUFMANN HERMANN
IPC: C10G59/02
Filed: 1965-09-06
Abstract: Gasoline is obtained from fractions boiling above 90 DEG  C. by hydrocracking catalytically at 30-140 kg./cm.2g., 320-420 DEG  C., 0.2-3 v./v./hr. with 500-2500 Nm3/m.3 of hydrogen and reforming the resultant product at 15-60 kg./cm.2g., 480-530 DEG  C., 1-6 v./v./hr. with 500-1500 Nm3/m.3  Preferably 40-60% of the first stage product boils below 100 DEG  C. and is stripped if necessary to remove hydrogen sulphide and partially expanded to free dissolved gases. The cracking catalyst may be Pd, Pt or Ni on a silica-alumina (70-90% SiO2) or a type X or Y molecular sieve with or without fluorine.  The reforming catalyst is Pt on alumina with or without halogen.
Patent GB-856545-A (GB)
Title: Industrial lift truck
Inventor: QUAYLE GEORGE FRANCIS
IPC: B66F9/12
Filed: 1958-11-26
Abstract: 856,545. Lift trucks. YALE & TOWNE MANUFACTURING CO. Nov. 26, 1958, No. 38071/58. Class 78 (3). In a lift truck, a carriage 17, moved on uprights 16 by means of hydraulic rams 21, rotatably supports a shaft 32, Fig. 10, on which is mounted a coil-handling device, the shaft being rotated by means of an hydraulic ram 40 pivoted between the carriage 17 and an arm 42 mounted on the shaft. The coil-handling device comprises a plate 30 secured to the shaft 32 and supporting I-beams 44, in channels 46 of which, a plate 62 supporting forks 61 is moved by means of hydraulic rams 70 pivoted between the plate 30 and brackets 66 on the plate 62. The coil-handling head 76 is moved in guides 52 by means of hydraulic rams 77, the guides 52 being provided with brackets 50 to which are pivoted slides 51 engaging in channels 45 of the I-beams 44, double-acting hydraulic rams 59 moving the guides 52 along channels 45. The coil-handling head 76 supports a coil-supporting member 87, 89, 90 which is rotated on a shaft 82 by means of a double-acting hydraulic ram 91. In operation, the forks 61 are inserted in a pallet and then rotated through 90 degrees by shaft 32, the arm 87 then being moved about axis 82 by ram 91 to a horizontal position extending transversely of the truck and is inserted in the central horizontal opening of the coil. The entire carriage 17 is then raised, and ram 91 is extended to rotate the coil through 90 degrees about the shaft 82, rams 70 then being extended to bring the flat surface of the coil into contact with the pallet. The coil and pallet are then rotated through 90 degrees by shaft 32 and the carriage 17 is adjusted to a level at which the coil and pallet are to be deposited.
Patent GB-381679-A (GB)
Abstract: 381,679. Garment presses. TILLEY, H., 18, Glyn Road Wallasey, Cheshire Aug. 31, 1931, No 24385. [Class 141.] A combined chair and garment press has a fixed back panel 5 extending below the chair seat 3, its rear face form ing one pressing sur face, and a hingec member 9 extending below the chair seal and forming the other pressing surface. The hinge 10 of the member 9 may be mounted upon a member 11 slidable in guides 12, and a box-like receptacle 8 may be provided below the seat.
Patent GB-935290-A (GB)
Title: Preparing carboxalkylated gelatin useful in photography
IPC: G03C1/047
Filed: 1959-11-11
Abstract: The invention comprises carboxymethylated pigskin gelatin The carboxymethyl gelatin may be prepared by liming raw pork rinds in the presence of an a -halogeno aliphatic acid and then extracting the gelatin derivative by known methods.  The acid may be bromoacetic or chloroacetic acid and the liming mixture may contain calcium hypochlorite.  The rinds, after liming, may be treated with dilute acid and washed before the gelatin derivative is extracted.  The derivative may be extracted with water and the extraction may take place at a pH of 4 to 5.  Alternatively, pigskin gelatin may be subjected to the following treatments in any order: (i) treatment with an aqueous solution to a pH from 8,5 to 10,5 containing at least 2% by weight of ammonium sulphate or ammonium acetate, and (ii) treatment with an a -halogeno aliphatic acid and a solution at a pH from 8,5 to 10,5 and at from 40 to 60 DEG F. whereby -CH2,COOH groups are introduced into the gelatin.  Treatment (i) may be applied for at least 2 days.  The gelatin may be in suspension in said solutions. The concentration of the ammonium salt in treatment (i) is 5%.  The acid may be bromoacetic acid and may be in a concentration from 2 to 20% by weight of the gelatin.  After either or both of said treatments the gelatin may be treated with activated carbon and may be given an additional treatment with a saturated solution of magnesium oxide containing excess solid magnesium oxide, before treatment (ii).  The gelatin derivative is useful in the production of photographic emulsions, e.g. silver halide emulsions or emulsions optically sensitised with a cyanine dye.  Specification 649,545 is referred to.
Patent GB-975809-A (GB)
Title: Planetary transmission
IPC: F16H3/66
Filed: 1963-09-27
Abstract: 975,809. Epicycle gearing. GIDDINGS & LEWIS MACHINE TOOL CO. Sept. 27, 1963 [Oct. 17, 1962], No. 38262/63. Heading F2D. A multistage epicyclic gear, particularly for machine tools, is composed of a series of individual gear units, each of which comprises a plurality of annular sections arranged in abutting relation to each other and to an annular section of an adjacent unit to form a housing and each unit enclosing a planetary gear train including a plurality of reaction members capable of being selectively braked to engage different gear ratios. The arrangement shown consists of a forward and reverse unit 20 coupled to a pair of fourspeed units 70, 120. The unit 20 consists of an end plate 44 and annular sections 40, 41 between which are mounted the operating brakes I, II in annular recesses while unit 70 consists of annular sections 71 . . . 74 housing brakes I . . . IV, and unit 120 consists of annular sections 121 . . . 125 also housing brakes I . . . IV. All the brakes are of the disc type with fluid pressure annular piston actuators. The individual gear units are connected together by spigot joints 112, 114 and longitudinal bolts. Unit 20 consists of driving and driven shafts 22, 26, the former carrying sun-pinions 21, 32 engaged by pairs of intermeshed planets 28, 30 on a carrier 24 splined to shaft 26, the planets 30 meshing with an annulus 36. Forward drive is obtained by engaging brake I to lock sun-pinion 32 and reverse by engaging brake II to lock annulus 36. The four-speed unit 70 consists of driving sun-pinions 86, 87 and a driven sun-pinion 98 meshed by triple planets 90, 91, 92 mounted on a common carrier-pin 96 and engaging annuli 82, 83, 84, and a reaction sun-pinion 85 meshed by a fourth planet 93, the speeds being obtained by engaging the pairs of brakes I and IV, II and IV, I and III, and II and III respectively. The second four-speed unit 120 consists of driving sun-pinions 132, 134, an output sunpinion 138 and planets 142, 152, 153, 154 meshing annuli 127, 128, 129, 130 locked by the respective brakes. The speed ratios are obtained by engaging the same pairs of brakes as in the case of unit 70. As shown in Fig. 6, the supply of pressure liquid from a pump P to the several brakes is controlled by a series of solenoid valves SV1 . . . SV10. The Specification also describes two-speed units, Figs. 7 and 13 (not shown), which may be substituted for the forward and reverse unit 20 or otherwise incorporated in the transmission, together with a five-speed unit, Fig. 10 (not shown).
Patent GB-382974-A (GB)
Abstract: 382,974. Colour photography. KODAK, Ltd., Kodak House, Kingsway, London.-(Assignees of Seymour, M. W.; Kodak Park, Rochester, New York, U.S.A.) Aug. 20, 1931, No. 23455. Convention date, Aug. 23, 1930. [Classes 97 (i) and 98.(ii).] Relates to projection printing from one film &c. to another, one or both films being of the lenticular type, whereby projectors may be employed having characteristics different from those of the taking camera. The original and copy films are guided by gates &c. one at least of which is curved, and copying is effected through an interposed optical system having a focal length independent of those of the camera and projector objectives, the arrangement being such that the characteristics of the camera and projector are reproduced respectively on the projection and copy sides of the printer. Fig. 1 shows one arrangement in which an original lenticular film 7 having transverse lens elements, moved through a curved gate 6 by feed mechanism 10, is illuminated by a lamp &c. 12 and is projected by a lens system 20 on to a lenticular film 14 moved through a curved gate 16 by feed mechanism 18 driven synchronously with the mechanism 10. The lens system 20 comprises two lens units 21, 22, Fig. 2, so arranged that the lens unit 21 forms an image of the original picture at infinity and this is focused in the window 19 by the lens unit 22 ; the lens elements of the film 7 form within the optical system a composite aerial image 23 of the camera filter which is re-imaged on the emulsion surface 33 by the lens elements of the film 14. The angle a between lines drawn from the optical centre 26 of a lens element of the film 7 to the centre of curvature 24 of the gate 6 and to the point 35 at which the optical axis 28-29 is intersected by the virtual image v<1> of the aerial image 23 with respect to the left-hand half of the printer is equal to the corresponding angle in the taking camera. The corresponding angle b at the right-hand is equal to the corresponding angle in the projector. In a modification both gates are convex with respect to the optical system. Further modifications include one flat gate over which is guided a lenticular film or a three-colour separation picture film. Enlarged or reduced copies may be produced. Specification 318,040, [Class 97 (i), Optical systems &c.], also is referred to.
Patent GB-1318433-A (GB)
Title: Manufacture of self adhesive tapes
IPC: C09J7/22
Filed: 1970-08-07
Abstract: 1318433 Pressure sensitive adhesive material BEIERSDORF AG 7 Aug 1970 [8 Aug 1969] 38299/70 Heading B2E [Also in Divisions B5 and C3] A pressure sensitive adhesive material is made by applying to a substrate a coating comprising (A) a copolymer of (a) 50-80% by weight of the total monomer weight of at least one diester of fumaric acid with a C 3 -C 12  aliphatic alcohol, (b) 18-40% of at least one copolymerisable vinyl compound and either or both of (c) 0.5-15% of at least one olefinically unsaturated polar compound containing a carboxyl, carboximide, dicarboxylic anhydride or dicarboximide group and (d) 0.1-10% of at least one olefinically unsaturated compound containing self-cross-linkable reactive groups, and (B) 0.1-10% by weight of the copolymer of a cross-linking polyfunctional compound (component B being optional if (d) is present; and heating the coating. The substrate may be coated on one or both sides by doctoring, dipping, or trailing blade, bar or roller coating or by a transfer process using a heated drum, endless steel belt or silicone paper. The substrates is a PVC or polyethylene terephthalate foil, paper, aluminium foil, woven or fleece material, metallised plastics sheet, asbestos or glass fibre cloth, plasticscoated cotton cloth, or foam. Components (b) is for example vinyl acetate or butyrate, a vinyl ether, N-vinylpyrrolidone, an acrylic or methacrylic acid ester, or styrene and component (c) is crotonic acid, itaconic acid, methylene glutaric acid, maleic acid imide or anhydride, or a C 1 C 8  alcohol monoester of fumaric, maleic or itaconic acids. Component (d) may contain a hydroxy, epoxy, N-methylolamide, aldehyde or isocyanate group and the cross-linking agent is a thermosettable phenol resin or a compound having at least two epoxy or isocyanate groups. Zinc chloride or an acid may be present as a cross-linking catalyst. An antiadhesive coating may be provided on the rear surface of the substrate.