baber/WOPTO huggingface dataset:
Patent GB-262403-A (GB)
Title: Improvements in or relating to refractory articles
IPC: C04B35/101
Filed: 1926-11-02
Abstract: 262,403. Aluminum Co. of America, (Assignees of Horsfield, B. T.). Dec. 7, 1925, [Convention date]. Drawings to Specification. Refractory substances. - A refractory article consists of hollow globules of fused refractory oxide, particularly alumina, cemented together by means of a binder such as sodium silicate, sodium or calcium aluminate. clay, &c. The binding agent preferably contains a considerable proportion of the oxide forming the globules, brushed refractory material may also be added to the composition. The globular material may be obtained by subjecting the fused oxide in a relatively thin stream to the action of a transverse air or steam jet, as described in Specification 248.360.
Patent GB-841456-A (GB)
Title: Electrolytic process for making periodic acid solutions
IPC: C01B11/22
Filed: 1958-08-27
Abstract: 841,456. Alkali per-iodates. ABBOTT LABORATORIES. Aug. 27, 1958 [Aug. 27, 1957], No. 27545/58. Class 41. Alkali per-iodates are prepared in an electrolytic cell having a porous diaphragm using as anolyte a solution of iodine in alkali containing also an alkali metal salt e.g. sulphate chloride or bbrate, in which is immersed a lead dioxide anode, whereby alkali iodate is formed; the electrolyte is then made acid and electrolysis continued whereby the iodate is converted to per-iodate. The alkali metal salt prevents the formation of insoluble alkali para-periodate on the anode. In a suitable apparatus, sublimed iodine is fed into a mixer 1 together with sodium hydroxide or carbonate, and sodium sulphate. A suitable mixture is 50 g. iodine, 20 g. NabH, and 10 g. sodium sulphate or borax, in 400 cc. water. The mixture is fed into the anolyte compartment 4 of an electrolytic cell provided with lead dioxide anode 5, graphite cathodes 6, 7 mounted in catholyte compartments bounded by porous diaphragms 8, 9, of alundum or asbestos. The catholyte solution is originally sodium hydroxide supplied from a tank 2, and diluted with water. Electrolysis is effected at 5‹ to 60‹C, and at a current density of 0À05 to 0À3 amp per sq. cm. of anode surface, and the anolyte is agitated. When the iodine is converted to iodate, the catholyte is removed and the diaphragms flushed with water, and then dilute sulphuric acid is admitted from a tank 11 and electrolysis continued, while sulphuric acid continues to flow through the diaphragm to the anolyte. After completion of this stage, the anolyte is passed through a filter 14 to remove any particles of lead dioxide, and the sodium meta-periodate recovered by crystallation, or the solution used directly e.g. for the oxidation of starch. U.S.A. Specifications 2,713,553 and 2,770,589 are referred to.
Patent GB-161146-A (GB)
Title: Valve device for drawing off gas from the cylinders of explosion engines or the like
IPC: F04B41/04
Filed: 1920-09-29
Abstract: 161,146. Herzmark, N. March 20, 1920, [Convention date]. Check loose ball valves. - A casing a containing a spherical non-return valve g is screwed into an engine cylinder and at every rise of pressure in the cylinder allows some gases to escape into a reservoir to be used for various purposes. The lift of the valve is very small and is limited by a stop i with an inclined face to make the ball turn about its centre.
Patent GB-156473-A (GB)
Title: Improvements in the knee-joints of artificial legs
IPC: A61F2/64
Filed: 1919-08-11
Abstract: 156,473. Snoaden, E. A. B. Aug. 11, 1919. Limbs, artificial.-In a knee-joint for artificial legs, of the kind in which the joint comprises a horizontal pin having a rule-joint at one end and a brake at the other end, the brake comprises an elliptical cam connected to one part of the limb and crescent-shaped blocks surrounded by a spring ring enclosed within a cap connected to the other part of the limb. The joint pin b is fitted at one end with a rule-joint comprising cheek-pieces d, d<1> connected to the frame members e, f and having a rubber block h between their opposing surfaces g. The brake at the other end of the pin b comprises an elliptical cam i secured to the frame f of the lower leg and disposed between two crescent-shaped blocks j which are enclosed within an elastic split phosphor bronze ring k mounted within a cap l to which the brake blocks j are pivoted. The cap l is detachably connected to the upper leg member e by means of a. spring-pressed bolt n engaging a notch m in the cap. The bolt may be withdrawn from the notch by a Bowden wire operated from the shoulder of the wearer so as to put the brake out of action and permit the wearer to assume the sitting position. The elasticity of the -split ring k assists the return 'movement of the leg members after bending. Ball bearings t may be fitted to the joint.
Patent GB-1118489-A (GB)
Title: Improvements in or relating to oil bath air filters
IPC: F02M35/022
Filed: 1967-06-15
Abstract: 1,118,489. Oil bath air filter. MOTORCONDENSATOR-COMPAGNIE SCHLOZ K.G. 15 June, 1967 [16 June, 1966], No. 27723/67. Heading BIT. [Also in Division E2] An air filter comprises a plastics container 10 whose lower end forms an oil bath, a removable top 12 with inlet and outlet connections 1, 6 and an annular foamed plastics filter element 5, which is made oversize to form a good seal with container 10 and with central tube 2, to which the element may also be bonded. Air flows in down tube 2 and up through the element 5 to outlet 6. Tube 2 is of plastics with an integral spacing spider 8 to locate the element off the container floor. Tap 12 has a peripheral bead (13) which makes a snap connection with flange (16) on a soft plastics ring (11), shrunk on to the container edge, and a releasable steel band (14, 15) is then fitted to lock the top in place (Figs. 2, 3, not shown).
Patent GB-655012-A (GB)
Title: Improvements in and relating to liquid discharge valves
IPC: F16K1/36
Filed: 1948-10-25
Abstract: 655,012. Water - waste - preventing cisterns. ALONSO, P. F. Oct. 25, 1948, No. 27746. Convention date, Oct. 23, 1947. [Class 26] [Also in Group XXIX] In a discharge valve for a cistern, premature closing of the valve 8 due to suction of the liquid flowing down the outlet pipe 6 is prevented by placing a bell 1 over the valve and the outlet and providing an opening 5 or series of openings leading into the bell between the lower 'edge of the latter and the outlet pipe so that, after the valve has been raised by means of a float, &c. and the flow started, the liquid entering the bell through the openings 5 will press on the valve disc and will keep it in the raised position until all the liquid has been discharged.
Patent GB-250852-A (GB)
Title: Improvements in and relating to crackers
IPC: A47F7/00
Filed: 1925-11-05
Abstract: 250,852. Williams, R. D., and McBride & Williams, Ltd. Nov. 5, 1925. Bon bon crackers. - Crackers for amusement and for the display of textile articles, such as handkerchiefs, have the handkerchiefs &c. forming the outer covering or other part of the cracker. A handkerchief 1 is folded over a tube 3 so that the corners 6 can be bunched and secured by a ribbon 8 to form one end of the cracker. A second handkerchief 2 is similarly secured on a larger tube 3<1>. The tubes are then telescoped together and secured by a band 5 and gummed scrap picture. The cracker is provided with the usual paper cap 4 or other article and an explosive strip. In a modification a single tube is used, the folded handkerchiefs abutting at the middle of the tube, or the tube can be dispensed with and replaced by portions of the handkerchiefs.
Patent GB-1294128-A (GB)
Title: Silverless photographic composition for making continuous tone images
Inventor: KETLEY ARTHUR D
IPC: G03F1/56
Filed: 1969-10-10
Abstract: 1294128 Light-polymerizable compositions W R GRACE & CO 10 Oct 1969 [11 Oct 1968 28 April 1969] 27833/72 Divided out of 1294127 Heading C3R A light-polymerizable composition comprises (a) a light-sensitive material consisting of (i) a polyene containing at least two reactive unsaturated carbon-carbon bonds per molecule and (ii) a polythiol containing at least two thiol groups per molecule, the total of carbon-carbon bonds per molecule and thiol groups per molecule being greater than four, (b) a photo-sensitizer and (c) from 1 to 25% of a pigment or from 0�1 to 25% of a dye, by weight of the composition. When exposed to light imagewise a coloured cross-linked polymer is obtained and, after removal of uncured material, a continuous tone solid image is formed. In examples the polyene is an allyl-terminated polymer (obtained from two polytetramethylene ether glycols, tolylene diisocyanate and allyl isocyanate), the polythiol is pentaerythritol tetrakis (#-mercaptopropionate), the photo-sensitizer is benzophenone and the compositions contain carbon black pigment and cyan, magenta and yellow dyes.
Patent GB-1089209-A (GB)
Title: Storage structure
IPC: B65G65/42
Filed: 1966-06-22
Abstract: 1,089,209. Storing silage, grain &c. A. O. SMITH HARVESTORE PRODUCTS Inc. June 22, 1966 [July 20, 1965], No. 27881/66. Headings A1F and A2D. [Also in Division E1] A structure for storing food materials, such as silage, corn and sugar, comprises a sealed silo 1 supported on a foundation within which foundation is housed a flexible diaphragm 27 connected on its underside by a pipe 29 to the atmosphere and above its top surface by a pipe 31 to the interior of the silo 1. Flexing of the diaphragm 27 accommodates any variation of pressure within the silo 1 equalizing the pressure therein with the pressure of the atmosphere outside. A known form of cutter arm 7 and unloading conveyer 9 are provided.
Patent GB-1387769-A (GB)
Title: Butenoic acid derivatives and a process for the manufacture  thereof
IPC: C12P13/04
Filed: 1973-06-12
Abstract: 1387769 Butenoic acid derivatives F HOFFMANN-LA ROCHE & CO AG 12 June 1973 27910/73 Heading C2C The novel compound L-trans-2-amino-4(2- aminoethoxy) - 3 - butenoic acid of the formula and acid addition salt thereof, are prepared by cultivating Streptomyces nov. sp. X-11085 (NRRL 5331) or a mutant or variant thereof capable of producing said compound in an aqueous nutrient medium containing assimilable sources of carbon, nitrogen and inorganic salts under submerged aerobic conditions and then recovering the said compound from the medium and if desired, converting it into an acid addition salt. The preferred salt is the hydrochloride. The compound may be recovered by filtering off the mycelium from the medium, and either treating the filtrate with a cation exchange resin to adsorb the compound followed by elution thereof with a solvent (e.g. ethanol/water NH 4 OH, 80 : 15 : 5), or subjecting the filtrate to partition chromatography on a silica gel support using the aforesaid solvent. The eluate is then concentrated to a syrup and crystallized by adding aqueous methanol. The filtered medium is preferably pre-purified by treatment with adsorptive charcoal. The novel compound and its acid addition salts have antimicrobial, antiprotozoal, anthelmintic and herbicidal activity. They may be formulated into oral, injectable or topical pharmaceutical compositions with an appropriate pharmaceutically acceptable vehicle or diluent, and also made up into herbicidal compositions, especially for post-emergent application, with convential carriers, diluents and adjuvants used in such compositions.
Patent GB-712770-A (GB)
Title: Improvements in or relating to microphones
Inventor: BIAL WOLFGANG
IPC: H04R17/02
Filed: 1951-11-28
Abstract: 712,770. Microphones. ROTHERMEL, Ltd. Nov. 25, 1952 [Nov. 28, 1951], No. 27950/51. Class 40 (4) In a piezo-electric microphone, a rectangular crystal 4 is directly secured by glue at three of its corners to rigid protrusions 3, the other corner being connected through a link 5 to a diaphragm 6. The protrusions are formed by moulding or stamping in the base of an openended plastic or metal casing 1 and may be cone-shaped with a rounded apex. A soft setting glue is used so that the crystal may effect slight movements over the protrusions. An apertured cap 7 is fitted over the open end of the casing to protect the diaphragm. Electrodes 10, 11 of the crystal are connected to insulated leads 8, 9, 'and are shunted by a resistor 12 which controls the frequency response and determines the total impedance.
Patent GB-1094998-A (GB)
Title: Process for the production of esters
Inventor: KINSLEY DENIS ANTHONY
IPC: C07C69/54
Filed: 1965-07-01
Abstract: An ester of acrylic or methacrylic acid is transesterified with an alcohol at elevated temperature in the presence, as a catalyst of an alkali metal salt of mercaptobenzthiazole, or phthalimide or lithium hydroxide.  The reaction may be at the boiling point of the mixture and the alcohol displaced is distilled off.  The catalyst may be added or formed in situ and a polymerization inhibitors may be present. Butanol, octanol, lauryl alcohol, ethoxyethanol, ethylene glycol, 1,3-propylene glycol, diethylene glycol, cyclohexanol, glycerol, pentaerythritol, and dimethyl aminoethanol are mentioned and examples describe the preparation of ethylene glycol di- and mono-methacrylate and butyl methacrylate.
Patent GB-1429560-A (GB)
Title: Ventilators and windows for vehicles
IPC: B60H1/26
Filed: 1973-06-13
Abstract: 1429560 Closable roof apertures in vehicles WEATHERSHIELDS Ltd 22 May 1974 [13 June 1973] 28117/73 Heading B7B [Also in Division E2] Each end of a roof window 1 of a motor coach is lifted and lowered by a double acting pneumatic piston and cylinder unit 15, 16 which acts on pivoted links forming the sole support for the unit. Each link 14 is rigidly connected to a telescopic link 7 at a common fixed pivot 11 and the telescopic link 7 is in turn pivoted to the window. The telescopic links include springs biasing them towards their extended conditions, and the two parts of each telescopic link can pivot relatively about their axis to the extent necessary to tolerate the raising of one end only of the window. The piston-rod 16 and cylinder 15 are pivoted at 17 and 19 to the links 14. The piston and cylinder units at opposite ends of the window may be operated together or separately so that the window is moved bodily or is tilted about one end.
Patent GB-1363385-A (GB)
Title: Microfiche camera
IPC: G03B27/32
Filed: 1972-06-15
Abstract: 1363385 Micro-fiche camera DIETZGEN CORP 15 June 1972 [4 Aug 1971] 28124/72 Heading G2A A micro-fiche camera comprises a support frame 89, a first carriage (70) mounted for linear movement on the frame, a second carriage (30) mounted for perpendicular linear movement on the first carriage, film-support means mounted on the second carriage, a film exposure aperture (31), and film-indexing drive means for linear movement of the respective carriages relative to the aperture to move the film relative to the aperture in frame-by-frame and row-byrow movement, the indexing drive for at least one of the carriages comprising a constantly energized drive motor 91, a latch 101 adapted to be successively held positively against each of a plurality of linearly spaced catch members 104 thereby to stop the carriage at spacings corresponding the frame arrangement on the fiche, and means to momentarily release the catch members from the latch. At least one of the carriages (e.g. carriage 30) embodying linearly movable latch means 101 connected to the carriage so that the carriage moves linearly with the latch means, a plurality of linearly spaced catch members spaced at linear intervals 104 for stopping said latch means and the latch driving means 100 thereof at spacings corresponding to the frame arrangement on said micro-fiche, the latch driving means being arranged to be driven by a constantly energized motor 91 for driving linearly said latch means into stopping engagement with successive catch members, thereby also stopping the carriage, the latch driving means and its constantly energized motor holding the stopped latch means positively against each catch member, and means to momentarily release said catch members from said latch means to allow the latter to advance into positive engagement with the next catch member. As shown, the film support unit comprises film feed and take-up units 34, 35 connected to a take-up cartridge 51. The indexing drive (90) for carriage (30) comprises latch 101 which is transported on a nut 100 into and out of engagement with successive catches 104 on a bar 105; after each exposure the latch is moved out of engagement with its co-operating catch 104 by a solenoid 110 which temporarily tilts  bar 105, so that it is moved until it engages the next catch 104. At the end of its travel nut 100 pushes a slide 118 to close a micro-switch 125 which (a) causes carriage frame (70) to be indexed by its indexing drive (130) which is similar to drive (90), and (b) reverses the drive of motor 91 so that nut is returned to its starting position where it returns slide 118 and again reverses the drive of motor 91. A switch 132 is provided to allow tilting.
Patent GB-232914-A (GB)
Title: Improvements in trawling gear
IPC: A01K73/045
Filed: 1924-11-26
Abstract: 232,914. Vigneron, Dahl, et Cie. April 23, 1924, [Convention date]. Addition to 209,032. Trawling-gear.-In a trawling-gear as described in the parent Specification, the pennant 14, Fig. 1, has detachable shackle connections 30, 31 at the ends for temporary connection to the haulage warp 1 and ground rope 3. Alternatively the pennant may be permanently attached at one end to either the haulage warp or ground rope, the free end dragging on the sea-bed during trawling or being attached to a fastening on the otter-board. In a modification, Fig. 6, the ground rope 3 is passed through a ring 21b attached by a crows-foot 9 to the otter-board, and is secured to a stopper 20 to which one end of the pennant is also secured. The crows-foot 9 may be replaced by a single link. The pennant may pass through a hole in the otter-board or round the board. In another modification, the ground rope passes through a ring at the end of the usual crows-foot, and the free end of the pennant connected to a fitting near the haulage warp connection during trawling. In other modifications the ground rope is connected either directly or by a pennant to an auxiliary haulage warp which trails loosely alongside the main warp during trawling.
Patent GB-1033235-A (GB)
Title: A process for the production of gases containing sulphur dioxide
IPC: C01B17/58
Filed: 1964-07-09
Abstract: Gases containing SO2 suitable for the production of H2SO4 are produced by the thermal cleavage of waste H2SO4 containing ammonium salts by spraying this acid into a kiln maintained at 800-1200 DEG C. and supplying air at the same time in such an amount that the oxygen content of the gases leaving the reaction chamber is from 3-10% by volume with reference to the gases present in the reaction chamber and the residence period is 0.3 to 15 seconds.  The process may be carried out in two stages, the first reaction chamber being the actual dissociation chamber and the second reaction chamber serving as an after-burning furnace to which additional air is supplied.  The cleavage temperature is controlled by the simultaneous combustion of fuel oil, fuel gas, H2S or sulphur; if liquid sulphur is used, the SO2 concentration of the gases produced can be regulated.  The SO2 containing gases produced may be oxidized catalytically to SO3 and further processed to H2SO4 or oleum.
Patent GB-627031-A (GB)
Title: Improvements in fluid conduits
IPC: F16L11/22
Filed: 1947-09-19
Abstract: 627,031. Flexible pipes. METCALF, P. J., and PIRELLI-GENERAL CABLE WORKS, Ltd. Sept. 19, 1947, No. 28310/46. [Class 99(ii)[ A flexible pipe comprises a plurality of separate tubes 11 made of a flexible organic polymer which consists of a polyvinyl chloride or polyvinyl acetate or a copolymer of polyvinyl chloride and polyvinyl acetate or polychloroprene or polymerized halogenated ethylene, the tubes being bound together in a protective casing 12. The casing may be of natural or synthetic rubber or a synthetic resin, and the spaces 13 between the tubes and casing are packed with a similar material or a fibrous material such as jute. A wire armouring 14 and lead sheath 15 may be added, or helically wound fibrous strip material may be used as a covering. The tubes may be of different colours for identification. Specification 484,815 is referred to.
Patent GB-703208-A (GB)
Title: Grid sections for picker apparatus used in opening and cleaning textile fibres
IPC: D01G9/06
Filed: 1951-12-03
Abstract: 703,208. Preparing fibres for spinning. SACO-LOWELL SHOPS. Dec. 3, 1951 [March 17, 1951], No. 28311/51. Class 120(1) A picker apparatus for opening and cleaning textile fibres, having a rotatable beater 12 with beater elements such as pins, is provided with a grid bar assembly comprising a pair of spaced cheek members 32, and bars 18 extending between members 32, and individual brackets 20 positioned on members 32 supporting bars 18 for individual adjustable rotation about longitudinal axes, brackets 20 being mounted on members 32 for individual radial movement with respect to the path of travel of the beater elements. As shown, stub shafts 24 at the ends of grid bars 18 are rotatably adjustable in brackets 20 and are clamped therein by means of set screws 28. Brackets 20 are adjustable, radially of beater 12, in tracks 30 on cheek members 32 which are secured to opposite sides of the machine frame 10 by mounting elements 40. Each such element consists of an inner portion 46 slidable on tracks 48 on an outer portion 42 which is slidable on tracks 44. on cheek 32, a set screw 52 clamping the inner portion to the frame; radial or circumferential adjustment of the cheeks and grid bars as a whole is'thus permitted. A baffle plate 54, adjustable rotatably and radially of the 'beater, is mounted between cheeks 32 immediately behind the last grid bar, and a bottom plate 60 is mounted so as to contact the bottom 62 of an air conveyer trunk. An air inlet slot is provided between plates 54 and 60, thus reducing the air currents passing inwardly between bars 18 and allowing even light impurities beaten from the fibre to pass outwardly between the bars. The beater 12 may be pinned, as shown, or bladed
Patent GB-152031-A (GB)
Title: Process for recovering nitrous vapours in form of aqueous nitric acid
IPC: C01B21/26
Filed: 1920-10-06
Abstract: Nitric acid up to 55 per cent strength is obtained by absorption of dilute nitrogen oxides in water absorbed in fibrous substances such as glass-wool or asbestos, or, if the strength does not exceed 50 per cent, cotton may be used.  The acid may be expressed from the absorbent fibrous material, or the process may be made continuous by supplying a small stream of water to the fibrous material contained in a tower or chamber while the current of gas is passing, and drawing off the acid at the bottom.