baber/WOPTO huggingface dataset:
Patent GB-1510680-A (GB)
Title: Process for forming a plane of weakness in structural metal elements
IPC: E04G23/08
Filed: 1975-07-09
Abstract: 1510680 Demolition ELEKTRO-THERMIT GmbH 9 July 1975 [11 July 1974] 28926/75 Heading E1S [Also in Division C7] A process for forming a plane of weakness in a structural metal element which is concealed from view and located inside a permanent encasing structure, e.g. in a concrete wall or a bridge, comprises ignition of an aluminothermic reaction mixture placed adjacent said metal element to heat it to a temperature at which it does not melt through but at which its strength properties, in particular its tensile strength, is diminished, the aluminothermic mixture having been installed in said encasing structure at the time of erection. The metal element may be steel; it may be heated to 400-900‹C by aluminothermic mixture contained in a cylindrical sleeve and ignited electrothermally. The process is used in demolition of temporary walls erected during building, or bridges may be demolished for purposes of national defence.
Patent GB-730960-A (GB)
Title: Improvements in or relating to electronic storage tubes
Inventor: LUBSZYNSKI HANS GER HARD
IPC: H01J29/41
Filed: 1951-12-11
Abstract: 730,960. Electron beam apparatus. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Dec. 10, 1952 [Dec. 11, 1951], No. 28958/51. Class 39 (1). [Also in Group XL (c)] An electronic storage tube comprises a target electrode composed of insulating material and impervious to electrons and having intermediate opposite sides thereof a conducting electrode, the target electrode being constructed so that elementary areas on one side have a capacity to corresponding areas on the other side whilst both sides have capacity to the conducting electrode, and means for applying electrons to one side of the target and means for applying electrons to the other side of the target. The target may comprise a glass plate 2 of thickness between 0.00025 and 0.002 inch coated on one side with a pattern of thin conducting lines 3, for example of platinum, either in the form of a grid or in the form of parallel lines interconnected by a suitable frame; a further insulating layer 4 is provided over the lines 3, for example by evaporating calcium fluoride on to the surface. The tube may be provided with two guns 5, 6 for writing and reading respectively. In operation signals, e.g. radar signals, modulate the gun 5 and cause areas of the surface 4 to become positively charged, these charges inducing corresponding charges on the surface 2 which are neutralized by the beam from the gun 6 and generate output signals. On a further scansion by the writing beam no further signals are generated at areas previously charged unless an adjacent area is positively charged, in which case secondary electrons are attracted to the area which was positively charged by a previous scansion. Thus when the reading beam scans the target, areas just bombarded by the writing gun give rise to a " white " signal, areas previously bombarded give a " black " signal, and signals obtained from a moving object cause an output signal which is " white " with a " black " tail. Instead of applying the signals by a scanning beam, an optical image can be projected on to a photocathode facing the target, or one face of the target may be provided with a photo-electric mosaic on to which an optical image may be projected. The " reading gun may be replaced by a photo-cathode scanned by a flying light spot. An electron permeable electrode or mesh may be arranged in front of either or both sides of the target electrode so as to render the potential of the sides of the target more uniform.
Patent GB-796510-A (GB)
Title: Improvements in or relating to lock nuts
IPC: F16B39/286
Filed: 1956-09-21
Abstract: 796,510. Locking nuts. CRANBERRY C. H. Sept. 21, 1956, No. 28962/56. Class 89(1) A self-locking nut comprises a body 1 with a screwed-bore 7a and a number of chordal-slots, e.g. two diametricallyopposed slots 2, 3, extending through the body-wall leaving posts 6, 7 and forming unbroken lips 4, 5. The lips are deformed axially of the body and, in addition, the posts are deformed radially inwards of the body. Both lips may be deformed towards the body or alternatively one lip may be deformed towards and the other away from the body.
Patent GB-1002403-A (GB)
Title: Improvements in the manufacture of regenerated cellulose filaments
IPC: D01F2/06
Filed: 1963-07-22
Abstract: 1,002,403. Viscose spinning. CHIMIOTEX S.A. July 22, 1963 [July 20, 1963]; No. 28981/63. Addition to 910,878. Heading B5B. The process of the parent Specification (wherein filaments of regenerated cellulose are produced by spinning a viscose having a viscosity of at least 150 poises at 15‹ C. and a gamma value of at least 45 and containing a cellulose having a degree of polymerization of at least 400 into an aqueous coagulating bath containing not more than 40 g./1. of. sulphuric acid and substantially free from zinc sulphate, in the presence of formaldehyde) is modified in that the coagulating bath contains 10 to 120 g./1. of sodium sulphate and not more than 1 % by weight of zinc sulphate (calculated as the anhydrous salt) and in that neither the viscose nor the spinning bath contain formaldehyde. Also in that the coagulated viscose filaments formed in the spinning bath are subsequently passed through an aqueous intermediate bath containing a small proportion of a water-soluble aldehyde, and then through a regeneration bath consisting of a hot dilute aqueous solution of sulphuric acid. The proportion of spinning bath liquid carried by the filaments of coagulated viscose from the spinning bath is preferably reduced by hydroextraction, mangling or perforated rollers whose hollow interiors are maintained at subatmospheric pressure. The fall in the gamma value of the filaments during their passage from the spinning bath to the intermediate bath is thereby reduced and the proportion of adelhyde taken up by the filaments in the intermediate bath increased. The viscose used preferably contains at least 3% of cellulose and at least 1À5% of caustic soda and preferably has a gamma value of 55 to 90. The D.P. of the cellulose in the viscose is preferably higher than 500 and its viscosity at the moment of spinning higher than 400 poises at 15‹ C. The spinning bath preferably contains 8 to 40 g./1. of sulphuric acid. The temperature of the first bath is preferably between 5‹ and 40‹ C., especially between 8‹ and 30‹ C. The intermediate bath may be a cold dilute acid bath containing from 1 to 40 grams of a water-soluble aldehyde per litre. The concentration of sulphuric acid and sodium sulphate in the intermediate bath may be similar to that in the coagulating bath. The filaments may be drawn at a draw ratio of at least 2:1 and preferably at least 3:1 in the coagulating bath and/or in the regenerating bath and/or during their passage through the air between these two baths. Specifications 685,631, 711,642 and 720,173 also are referred to.
Patent GB-226519-A (GB)
Title: Screen for treating wood pulp and the like
IPC: D21D5/06
Filed: 1924-12-03
Abstract: 226,519. Thune, S. Dec. 20, 1923, [Convention date]. Rotary strainers. -A drum 4 rotates rapidly in a closed casing 1 which is of such a form that the radial distance between the drum and the casing varies. Wood pulp or the like from an intake 2 is carried round by radial blades 5 to an outlet 3, the shape of the casing causing pulsations through the drum. The casing may have one or more enlargements which are deeper than the rest. the object being to ensure a thorough cleaning of the straining surface at these points. Air sucked in through a pipe 7 helps to keep the surface of the drum clear. The screened pulp leaves through a central perforated outlet pipe or one or more pipes 10, so curved as to take up and conduct away the screened pulp, may be provided.
Patent GB-355556-A (GB)
Title: Improvements in stays for hinged articles
IPC: E05D11/00
Filed: 1930-09-29
Abstract: 355,556. Folding stays. POLLOK, J. C., 14, Muir Street, Hamilton, Lanarkshire, and McERLANE, D. A., 9, Carbrook Street, Garngad, Glasgow. Sept. 29, 1930, No. 29048. [Classes 65 (i) and 65 (ii).] A stay for hinged members, provided with interlocking means which automatically become operative or inoperative on successive opening and closing movements of the hinged members, comprises two arms 1, 2, connected by a pivot pin 3 and hinged at 4, 5 respectively to the members, which are hinged together at a point to the right of the stay as shown. A cigarshaped follower 9, integral with a star-wheel 13, is mounted on a pin on the arm 1; the arm 2 has a slot 8, opening into a wider part in which the follower can turn round, and a striker 11 adapted to engage the arms of the star-wheel. In the open position of the hinged members, the follower 9 rests across the mouth of the slot 8 to prevent closing ; on further opening of the members, the star-wheel engages the striker 11, as shown, and turns the follower into a position in which it can enter the slot 8 and allow the members to be closed. On reopening the members to their full extent, the star-wheel again engages the striker to turn the follower through a rightangle, so that slight closing brings the follower to the locking position across the mouth of the slot 8. A pin 18 on the arm 1 works in a slot in the arm 2 to limit the movement of the member. A dished cover is preferably provided for the mechanism held by riveting over pins 3, 18 and the pin carrying the follower. The cover serves to produce friction between the stay arms ; alternatively, spring means may be provided between the cover and the adjacent arm to produce friction.
Patent GB-924530-A (GB)
Title: Improvements in or relating to fluorene polyamides
IPC: C08G69/26
Filed: 1961-08-11
Abstract: A clear transparent linear polyamide having an intrinsic viscosity of at least 0,4 in a solution of 90 parts phenol and 10 parts ethanol at 35 DEG C. and a glass transition temperature above 120 DEG C., of (A) a bifunctional organic dicarboxylic acid <FORM:0924530/IV(a)/1> or ROC-Z-COR, where R is halo, hydroxy or alkoxy having up to six carbon atoms and Z is phenylene or a normal alkylene chain having from 4 to 8 carbon atoms; and (B) an organic diamine <FORM:0924530/IV(a)/2> or H2N-CH2-Z1-CH2-NH2 wher Z1 is phenylene or a normal alkylene chain having from 4 to 8 carbon atoms; at least one of (A) and (B) being a compound containing a fluorene nucleus.  Specified dicarboxylic acids are pimelic, adipic, sebacic, phthalic and isophthalic acid and 9:9-bis(21-carboxyethyl) fluorene.  Specified diamines are 9:9-bis(31-aminopropyl) fluorene and hexamethylene, octamethylene, decamethylene and isomeric xylene diamines.  The polyamides are preferably made via the salts of the corresponding diamines and dicarboxylic acids.  The examples describe the preparation of polyamides from salts of:- (II) and (VIII) 9:9-bis(31-aminopropyl) fluorene and adipic acid; (IV) 9:9-bis(21-carboxyethyl) fluorene and hexamethylene diamine; (VI) 9:9-bis(31-aminopropyl) fluorene and 9:9-bis(21-carboxyethyl) fluorene and (VII) 9:9-bis(31-aminopropyl) fluorene and sebacic acid.  U.S.A. Specifications 2,130,253 and 2,130,948 are referred to.ALSO:Salts are made by the reaction of isopropanol or isopropanol and water of: -(I) 9:9-bis(31-aminopropyl) fluorene and adipic acid; (III) hexamethylene diamine and 9:9-bis(2-carboxyethyl) fluorene; (V) 9:9-bis(31-aminopropyl) fluorene and 9:9-bis(2-carboxyethyl) fluorene and (VII) 9:9-bis(31-aminopropyl) fluorene and sebacic acid.  U.S.A. Specifications 2,320,029 and 2,339,218 are referred to.
Patent GB-1077182-A (GB)
Title: Apparatus for production of virus in eggs
IPC: C12M3/00
Filed: 1964-07-15
Abstract: In the propagation of virus in eggs for the production of vaccines, rows of eggs E, Fig. 3, with their broader ends uppermost are indexed stepwise in trays T and each row cf eggs, when in a stationary position, is candled for the determination of live embryos, externally sterilized, punched, inoculated, sealed, candled a second time, chopped and harvested as described in detail below.  The candling stations 31 include for each egg in a row of eggs a light bulb 76 and an elastic, light-shielding bellows 80 terminating in an outwardly flared portion 81, which are drawn down on the egg; the bellows can accomodate itself to the various sizes of eggs encountered and to eggs inclined from the vertical Figs. 5 and 6 (not shown).  The light 76 is de-energized when the bellows are raised. Defective eggs not containing a living embryo are differentiated by a marker 83 actuated electrically by the candling operator through a solenoid 84 and lever 85, for subsequent replacement by hand.  The trays are advanced stepwise to the left upon rails 45 by pins 46 carried by a frame 47 and the frame in turn is mounted on pins <PICT:1077182/C6-C7/1> 50 which are carried on spaced-apart Fig. 4 (not shown) shafts 51 urged to the left by helical springs 52.  The cyclical movement is achieved by cams 55 which raise the frame 47 and pins 46 (these engage holes in the under-portions of the trays) for movement to the left under the influence of the springs 52, and cams 60 which operate against rollers 61 fixed to the shafts 51 to move the lowered frame and pins to the right, the trays being held meanwhile by positioning pins 62.  The top portion of each candled egg is individually sterilized by tincture of iodine (S, Figs. 8 and 9 - not shown). When the spraying assembly is lowered upon an egg, a sleeve (112) is urged upwardly to the right about a pivot (110) whereby a plunger (115) operates an electric switch (116) for the supply of the sterilizing liquid.  The sterilized portion of the shell is punched by a tube (130, Figs. 10, 11, 19 and 20 -not shown) within which an elongated hypodermic needle (137) descends to inoculate virus suspension into the extra-embryonic fluids of the egg without itself contacting any part of the egg shell.  The inoculated egg is sealed by a spray of wax emulsion (H, Fig. 12 - not shown); in this case the sensing sleeve includes a gauze screen (165) through which the sealing fluid is sprayed. After incubation, further candling and chilling, the top of the egg is chopped off by a blade (193, Figs. 14, 16 - not shown) and the severed shell portion is conveyed away by a current of air and by suction.  The virus mass is sucked from the egg through a multiplicity of passages in a head (223, Fig. 17 - not shown) shaped to hold the embryo and yolk in the egg shell. Finally, the trays are overturned Fig. 13 (not shown) to dump the egg shells and remaining contents, and are then washed for further use.
Patent GB-1531414-A (GB)
Title: Urethane-containing reaction products containing free iso(thio)cyanate groups
IPC: B29C65/00
Filed: 1975-10-27
Abstract: 1531414 Urethane-containing reaction products containing free iso(thio)cyanate groups DR KURT HERBERTS & CO GmbH 27 Oct 1975 [4 Nov 1974] 29179/77 Divided out of 1531413 Heading C3R A reaction product of a hydroxy-functional polyether and/or polyester and a polyiso(thio)- cyanate contains free NCO and/or NCS groups and is capable of reacting with reactive hydrogen-containing compounds and has an average molecular weight of from 500 to 10,000 and a NCO and/or NCS group content of from 1 to 10% wt. and a reactivity of not more than 5 hours. The polyester or polyether preferably has a molecular weight of from 300 to 4000, and the polyiso(thio)cyanate preferably has a molecular weight of from 100 to 1500. The reaction product may contain copolymerized therein at least one compound selected from a polyamine, an aminoalcohol and a polyol preferably in an amount of not more than 30% wt. Preferred polyols are C 1 -C 8  aliphatic polyols containing 2-4 hydroxyl groups, e.g. glycol, neopentyl glycol and glycerine. The reaction products are moisture curable. The polyiso- (thio)cyanates may be aliphatic and/or aromatic and/or cycloaliphatic. In the examples reaction products having NCO contents ranging from 2À39 to 4À95% wt. and viscosities of from 0À41 to 4À5 Pas are prepared by reacting (1) polypropylene glycol (M.Wt. 2000) with diphenylmethane diisocyanate, (MDI), and optionally hexamethylene diisocyanate; or (2) polyglycol (M.Wt. 2000) with toluene diisocyanate, (TDI); or (3) a polyester of adipic acid and ethylene glycol, MDI and TDI. Uses.-An adhesive for joining foils by mechanical coating.
Patent GB-658487-A (GB)
Title: Improvements in or relating to electric safety lamp
IPC: F21L14/00
Filed: 1949-11-15
Abstract: 658,487. Safety lamps. PERSSON, F. R. Nov. 15, 1949, No. 29209. [Class 75(iv)] In an electric safety lamp having two spaced protective hoods 10, 11 the inner hood 10 is made of glass and the outer hood 11 is made of synthetic plastic. The outer plastic hood is either transparent or translucent and is spaced not less than five millimeters from the inner hood which is frosted. The outer hood is provided with a. threaded collar 14 for securing it to the body 6 of the lamp and with an internal shoulder 12 for clamping a flange 9 on the inner hood to the lamp body. Washers 8, 15 seal the joints. The lamp body 6 is made of heat resisting material such as asbestos-filled phenol formaldehyde condensation product and is of elongated shape to serve as a handle. The electric leads pass through the handle to the lamp socket 4.
Patent GB-1470906-A (GB)
Title: Safety devices for projectiles
IPC: F42C9/10
Filed: 1975-07-11
Abstract: 1470906 Safety relays for flares and markers FRANCE ARMED FORCES MINISTER OF 11 July 1975 [1 Aug 1974] 29325/75 Heading F3A A safety relay for use in a marine-marker, smoke or illuminating-flare 2 which is intended to be projected from a barrel or from a cartridge casing 6 within an aircraft, comprises a slide 11  which is movable, upon ignition of a charge 18, from a first position, in which ignition of the main charge 3 of the flare is prevented, into a second position in which firing of the main charge is allowed and in which the slide projects beyond an outer surface of the flare whereby the slide cannot be displaced into the second position while the flare is in the barrel or the cartridge casing. The slide carries transmission charges 25, 27, 28 and delay charges 26, 29. The delay charge 29 is arranged to ignite a transmission charge 5 for the main charge 3 of the flare once the slide has been moved to its second position by the pressure of the gases from the ignited charge 18. A shear pin 19 normally retains the slide. A detonator 7 for firing the transmission charge 25 is ignited by a hammer 8 that is adapted to be driven by compressed air or combustion gases.
Patent GB-261784-A (GB)
IPC: G01N1/20
Filed: 1926-11-20
Abstract: 261,784. Elliott, D. J., and Jones, G. C. Nov. 21, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Liquids, sampling; moving-chamber apparatus. -A liquid-sampling apparatus comprises means whereby average samples of a varying body of liquid in a pipe or vessel are automatically collected. Fig. 3 shows an apparatus wherein an outlet 3 from a pipe leading from a still to a tank delivers oil as desired to receptacles 9, 10, on a hollow shaft 7. When a predetermined amount is collected, the receptacle 9 overbalances, discharging its contents to the tanks 5 and drain or outlet 6, and bringing the receptacle 10 into position. The receptacles are provided with adjustable sampling-tubes 14, down which, just before the vessel 9, 10 overbalances, an overflow passes to the hollow axle 7, and thence to a sample receptacle.
Patent GB-975991-A (GB)
Title: Improvements relating to automatic record changing gramophones
Inventor: GRANBY PETER HUGH
IPC: G11B17/02
Filed: 1962-07-31
Abstract: 975,991. Automatic record changing gramophones. MAGNAVOX ELECTRONICS CO. Ltd. July 7, 1963 [July 31, 1962], No. 29416/62. Drawings to Specification. Heading G5R. An automatic record changing gramophone has a change cycle mechanism including a rotary cam which makes one complete revolution in each cycle of operation and which is located in either one of two alternative angular rest positions by engagement with it of a follower; whilst a record is being played the cam is located in a first position, and it is moved from this position by an automatic trip when the record is finished and rotates to the second position, in so doing raising the pick-up arm and moving it outwards; the cam is stopped in the second position when no more records are to be played, engagement of the follower in this position stopping and switching off the gramophone; the follower is movable from engagement with the cam in the second position, in so doing raising the pick-up arm and moving it outwards the cam is stopped in the second position when no more records are to be played, engagement of the follower in this position stopping and switching off the gramophone; the follower is movable from engagement with the cam in the second position only by a manual control to restart the gramophone. The particular arrangement shown is described in the abridgment of Specification 975,992.
Patent GB-769111-A (GB)
Title: Portable containers for beer or like beverages
Inventor: GRETTON-LOWE REGINALD
IPC: B67D1/04
Filed: 1954-10-13
Abstract: 769,111. Forcing liquids by gaseous pressure GASKELL & CHAMBERS, Ltd. Oct. 6, 1955 [Oct. 13, 1954], No. 29468/54. Class 102(2) [Also in Group XVIII] A beverage container comprises a body 1 and a lid 3 which can be interlocked with the body 1 by relative rotation, the lid having an outlet tap 7 and tube 9, a relief valve 10, a fitting 11 having a non-return inlet valve 12 for connection to an air pump and a metal bulb containing gas under pressure releasable by a piercing needle 14. Inter-engaging means on the body and lid for preventing relative rotation therebetween comprises wire loops 18, 20 pivoted on the lid and body respectively, the loop 18 being of such a size that the loop 20 can pass through it to lock the lid and body, its return being prevented by a strap 22 adapted to engage studs 21 on the container.
Patent GB-682829-A (GB)
Title: Process for conditioning collagen-containing raw materials used for the production of gelatine or glue
IPC: C09H3/00
Filed: 1950-12-04
Abstract: Collagen-containing raw materials, e.g. cowhide split scrap and osseine, are conditioned so that gelatine or glue can be readily extracted with hot water, by heating the materials in an acidic or alkaline aqueous liquid containing a gelatine-precipitating, non-tanning substance, e.g. sodium sulphate, chloride, carbonate or phosphate, ammonium sulphate, magnesium sulphate, alone or mixed with magnesium oxide, methylethyl- or propyl-alcohol or acetone, in such concentration as to prevent gelatine dissolving in the liquid at the temperature of digestion, which may range from a minimum of 40 DEG C. to the gelatinization temperature of the material.  The pH of the liquid may be between 1 and 2 and it may contain between 15 and 20 per cent of an inorganic gelatine-precipitating, non-tanning substance.
Patent GB-737834-A (GB)
Title: Automatic cut-off valve for milking apparatus
Inventor: RONALDSON FRANK HOOD
IPC: A01J5/08
Filed: 1953-10-27
Abstract: 737,834. Cow-milkers. RONALDSON, L. Oct. 27, 1953, No. 29626/53. Class 84. [Also in Group XXIX] An automatic uut-off valve interposed in a milk dropper line 23, Fig. 2, between a group of teat-cups and the main milk-conveying line 22, comprises a cylindrical transparent casing 17 sealingly clamped between end-plates 18a, 18b having nipple ends 18aa, 18bb, for connection to the lines 22, 23 respectively and a hollow piston-like valve member 24 which under normal milking conditions is urged by a spring 27 away from the upper end of the casing so that milk can flow from the line 23 through notches 26a and around the valve 24 to the line 22. In the event of a teat cup being dislodged from the cow, air will rush into the line 23 and, augmented by the suction in the line 22, close the valve 24 on to the upper seat to prevent dirt and air from entering the line 22. A separate valve member may be associated with each teat cup, in which case a cap 3, Fig. 1, connected to a teat-cup 1 and housing a piston-like valve member 6 is urged away from a seat 7 by a spring 8 during normal milking conditions.