baber/WOPTO huggingface dataset:
Patent GB-813559-A (GB)
Title: Recovery of the antibiotic ristocetin from a solution thereof
Filed: 1957-02-04
Abstract: The antibiotic ristocetin is recovered from a ristocetin solution containing fermentation impurities by contacting said solution with a cation exchange resin having acidic groups thereon and containing not more than 4 parts by weight of cross-linking component whereby the ristocetin is adsorbed on the cation exchange resin and eluting the ristocetin from the cation exchange resin.  Suitable resins are (a) sulphonated copolymers of divinylbenzene and styrene having 4, 2 and 1 per cent divinyl benzene cross linkage, e.g. Dowex 50-X4, Dowex 50-X2 and Dowex 50-X1; (b) carboxylic acid copolymers of divinylbenzene and methacrylic acid having between 1 and 4 per cent divinylbenzene as cross-linking component, e.g. "Amberlite" IRC-50, "Amberlite" XE-64, "Amberlite" XE-89 and "Amberlite" XE-112 ("Amberlite" is a Registered Trade Mark).  Preferably the resin contains 0.5 to 4 parts by weight of cross-linking component. Impurities may be removed by treating the resin with an alkaline solution of pH 7.0 to 9.5.  The ristocetin is then recovered by elution with aqueous alkali at pH 9.5 to 10.8, e.g. aqueous sodium hydroxide or ammonium hydroxide.  In the case of the carboxylic acid ion exchange resin, aqueous acid, e.g. hydrochloric or sulphuric of pH 2.0 to 4.0 may also be used for elution.  It is preferred that the resins have a particle size of 50 to 100 and especially 100 to 200 mesh.  Inorganic salts may be removed from ristocetin solutions before or after the aforesaid adsorption step by contact with (a) a sulphonic cation exchange resin other than the ones referred to above, e.g. "Amberlite" IR-120, to remove metal ions such as sodium or ammonium; or (b) an anion exchange resin such as "Amberlite" IR-4B to remove excess acidic groups. Specification 765,886 is referred to.
Patent GB-418412-A (GB)
Title: Improvements in or relating to thermionic valves and the like
IPC: H01J19/42
Filed: 1934-02-06
Abstract: 418,412. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Feb. 6, 1934, No. 3938. Convention date, Feb. 6, 1933. [Class 39 (i).] One or more supporting wires or braces for electrodes is carried from a holder having an aperture larger than the wire &c. which passes through the aperture and is spring-pressed against its wall so that the wire &c. may move longitudinally but not laterally. As shown, the grid and anode supporting wires Sg, Sa, and the cathode K are pressed against the walls of apertures O in a mica disc J by springs F secured by rivets N to the disc.
Patent GB-1205934-A (GB)
Title: Nickel dithiocarbamates
Inventor: HURLOCK RONALD JAMES
IPC: C08K5/39
Filed: 1967-01-26
Abstract: 1,205,934. Nickel dithiocarbamates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 16 Jan., 1968 [26 Jan., 1967], No. 3962/67. Heading C2C. [Also in Division C3] The invention comprises nickel dithiocarbamates of the formula wherein R represents an alkyl, alkenyl, cycloalkyl or aralkyl group or substituted derivatives thereof and R 1  represents a 3,5-ditert.-alkyl-4-hydroxybenzyl group. These compounds may be prepared by reacting a nickel salt with a dithiocarbamic ester of the formula wherein R and R 1  have the significances given earlier, and R 2  is the same as R 1 . The intermediate dithiocarbamic ester may be prepared by the condensation of formaldehyde, a primary amine, and a 2,6-ditert.-alkylphenol, followed by interaction with CS 2 . Example I describes the preparation of nickel bis-[N-(3,5-t-butyl-4-hydroxybenzyl) -N-methyldithiocarbamate].
Patent GB-1503123-A (GB)
Title: Temporary supports for transfer printing
IPC: C09D11/037
Filed: 1976-02-02
Abstract: 1503123 Heat transfer printing using cationic dyes BAYER AG 2 Feb 1976 [3 Feb 1975] 03974/76 Heading D1B An aqueous printing ink used in transfer printing of synthetic fibres, tannin-treated cotton and leather contains a sublimable carbinol base of formula in which A, B, D independently denote an aryl or heteryl radical, B may alternatively denote a hydrogen atom or B conjointly with A can form the remaining members of a heterocyclic ring system, M and L independently denote an optionally alkyl-, cyano-, or alkoxycarbonyl - substituted methane group or a nitrogen atom, or M conjointly with E and D can form the remaining members of a heterocyclic ring system, E denotes a direct bond or an N - alkyl group, X denotes alkyl, aralkyl, cycloalkyl or aryl radical and n is 0 or 1 together with a substance which has an alkaline reaction as defined, preferably an alkali metal alcoholate. In addition the ink may contain a sublimable disperse dye and is used in heat transfer printing on temporary supports by conventional methods. In an example the temporary support is cotton nettle which support is used to print polyacrylonitrile fabric at 200‹C for 30 seconds.
Patent GB-1468653-A (GB)
Title: Process for producing polylaurin-lactam
IPC: C08G69/16
Filed: 1976-02-02
Abstract: 1468653 Polylaurolactam G A ENENSHTEIN A V BEREZOVSKY M K DOBROKHOTOVA E K LYADYSHEVA L A NOSOVA S N NURMUKHOMEDOV E L TARASOVA S S GUSAKOV L D PERTSOV and I A EBEL 2 Feb 1976 04015/76 Heading C3R Laurolactam is hydrolytically polymerized in the presence of water, orthophosphoric acid and a dicarboxylic acid at 280‹ to 310‹ C. and 70 to 120 atm. to form a homophase reaction system containing prepolymerizate and water which is then throttled down to 0À1 to 0À005 atm. under isothermal conditions at a flow rate of 20 to 90 m./sec. and polymerized at 280‹ to 300‹ C. as a 0À5 to 2À0 mm. thick layer. In specific Examples adific acid is the dicarboxylic acid used to regulate molecular weight.
Patent GB-929714-A (GB)
Title: Improvements in photoelectric measuring instruments
IPC: H02P7/347
Filed: 1959-10-29
Abstract: 929,714. Photo-electric control of rolling mills. M. C. PFISTER. Oct. 29, 1959 [Nov. 27, 1958], No. 4021/62. Divided out of 929,711. Drawings to Specification. Class 40 (3). [Also in Group XXII] In a rolling mill, having rollers with a plurality of rolling profiles, material to be rolled is positioned before the correct profile by means of the photo-electric scanning head described in Specification 929,711 which scans transverse to the direction of conveyance of the material and derives from the phase position of the photoelectric pulses a value for the transverse position of the material. This value is compared with a pre-programmed value and the rolling operation is released only when the values agree.
Patent GB-1201905-A (GB)
Title: Photographic silver halide materials
Inventor: MAYNARD THOMAS REGINALD
IPC: G03C1/95
Filed: 1967-01-27
Abstract: 1,201,905. 905. Photographic silver halide materials. KODAK Ltd. Jan.25, 1968 [Jan.27, 1967], No.4075/67. Heading G2C. Photographic light-sensitive silver halide materials for rapid processing comprise a support carrying at least one silver halide emulsion layer and containing in an emulsion layer or a layer adjacent thereto a silver halide developing agent, and bearing a surface layer containing 0-50% by weight of gelatin and 50-100% by weight of silica having an average particle size smaller than 1 micron. The developing agent may be hydroquinone, a p-aminophenol or 1-phenyl-3-pyrazolidone. The surface layer containing silica acts as an antiabrasion layer and prevents the rapidprocessed material feeling sticky to the touch.
Patent GB-1031651-A (GB)
Title: Improvements in the manufacture of oxide mixes
Inventor: DEARDEN JACK
IPC: H01B1/14
Filed: 1964-01-31
Abstract: Metallic oxide mixes, suitable for use in electrical resistances, are prepared by feeding finely powdered metallic alloys and oxygen sufficient to oxidize the alloy, into a reaction zone, part of which is at, or above, the initiation temperature of the reaction, and cooling the oxide immediately after passage through the zone.  A metallic oxide mix may be prepared by feeding a powdered alloy of 95% tin and 5% antimony at a rate of 1 g./min. and 100 1. of oxygen per hour into a reaction zone at 1000 DEG  C. Alloys mentioned are Sn and Sb, Sn and Bi, Sn and As, Sn and P, Sn and In, and oxidizable alloys of Fe with transition metals.
Patent GB-539432-A (GB)
Title: Inhalation device for use in aviation at high altitudes
IPC: A62B7/14
Filed: 1940-03-06
Abstract: 539,432. Respiratory appliances. OHIO CHEMICAL & MANUFACTURING CO. March 6,1940. No. 4205. Convention date, Dec. 14, 1939. [Class 81 (ii)] An inhalation device for use by aviators comprises a mask I (which may cover the nose and mouth as shown or the nose only) with a breathing chamber 13, a holding ring 18 secured in an opening in the mask, a body 33 of porous material such as sponge rubber mounted in the ring, and means, such as an expansible pneumatic tube 26, engaging the porous body and responsive to variations in air pressure, said means being adapted to compact the porous body and so reduce the area of the individual pores in response to decrease in atmospheric pressure. The mask is connected to a rebreathing bag 40 of a volume substantially less than the volume of a full exhalation or inhalation in normal breathing, and oxygen is fed to the bag 40 from an oxygen cylinder through an adjustable valve, flow meter and tube 48. In use, the body 33 provides a slight restriction to normal breathing, so that upon inhalation the rebreathing bag 40 is first emptied, and thereafter air is drawn through the body 33. On exhalation, the gases first exhaled fill the bag 40, the latter part of the exhalation, which is most heavily charged with carbon dioxide, being discharged to atmosphere through the body 33.
Patent GB-539437-A (GB)
Title: Accelerometers
IPC: G01P15/04
Filed: 1940-03-07
Abstract: 539,437. Accelerometers. SQUARE D CO. March 7, 1940, No. 4286. Convention date, March 30, 1939. [Class 106 (iii)] A device for measuring accelerations along a given axis comprises two pivoted levers carrying masses and so disposed that acceleration in the direction of the said axis causes the masses to turn the levers in opposite directions, means connecting the levers so that they move together, and a restraining helical spring acting on each lever so arranged that the length of the effective lever arm of the force exerted by it varies proportionally to that of the mass as the lever turns, whereby an even scale of graduations may be employed in connection with an indicator connected with one of the levers. As shown, a pair of weights 30, 50 are carried by horizontal arms 31, 51 extending from a pair of pivoted vertical spindles 33, 53 the movements of which are equalized by meshing gear sectors 47, 67 secured to them. Acceleration components perpendicular to the line passing through the axis of the spindles 33, 53 cause the weights to rotate the spindles against the restoring force of helical springs 42, 62 attached to arms 38, 58 which extend from the spindles substantially at right angles to the arms 31, 51, so that as the spindles rotate the effective leverages about them of the inertia forces of the weights and the spring tensions alter substantially proportionately to one another, so that a scale of uniform graduations may be used. A quadrant 69 on the spindle 33 gears with a pinion on the shaft 71 of the needle 73 indicating instantaneous values of acceleration. Backlash is eliminated by a hair-spring so attached to a hub on the lower end of the shaft. A needle 90 indicating the maximum value of the acceleration attained is carried by a hollow sleeve 85 surrounding the shaft 71 and carrying a disc 91 on which is a pin 108. This pin is adapted to be engaged by a floating arm 89 rotatably mounted on the sleeve 85, the arm being rotated by a pin 83 on a disc 82 secured to the shaft 71. This allows the maximum value indicator 90 to be carried round substantially two revolutions without change of position when the needle 73 returns to zero, owing to the lost-motion, connection provided on the return movement by the floating arm. A spring pawl (not shown) engages ratchet teeth on the edge of the disc 91 to retain the maximum value indicator in its set position, until disengaged by the movement of a lever brought about by an external knob. The maximum value indicator is then returned to the zero position by a hair-spring 113 attached to a hub 110 secured on the sleeve 85. This hairspring by winding on the hub 110, produces a braking effect preventing excessive movements under abnormal accelerations such as those produced by shocks.
Patent GB-287922-A (GB)
Title: An improved electric switch
IPC: H01H9/38
Filed: 1928-02-11
Abstract: 287,922. Landis et Gyr Soc. Amon. March 30, 1927, [Convention date]. Sparking, preventing; contacts. - The main contacts of a switch are shunted by a number of series connected contacts which are opened after the main contacts. The invention is shown applied to a three-phase switch. The contacts 9 are carried by springs 8 and are moved out of engagement with the contacts 10 upon depression of a plate 18. Further depression of the plate 18 causes roller contacts 14 carried by springs 13 to be moved away from fixed contacts 12.
Patent GB-1061008-A (GB)
Title: Apparatus for opening asbestos into elementary fibres
IPC: D02G3/20
Filed: 1965-02-02
Abstract: <PICT:1061008/C1/1> Apparatus for opening asbestos into fibres comprises a vessel 1 for mixing fibre agglomerates with a liquid to form a suspension which is drawn through and out of the vessel by means of a pump 5, the delivery side of which is connected to the bore of a stationary disc 8 associated with a rotary disc 9, the opposite faces of the discs being provided with grooves to form conduits of varying cross-section, each groove connecting a middle disc portion with the disc periphery, and the discs being enclosed by a collector 15 connected by a pipe 16 to the vessel 1.  The disc 9 is adjustable relative to the disc 8.  The grooves in the disc 8 are arcuate and the grooves in the disc 9, which exceed in number the grooves in the disc 8, extend along intersecting arcs.  The vessel is of circular cross-section and the pipe 16 opens tangentially of the vessel.
Patent GB-494479-A (GB)
Title: Improvements in and relating to compositions for coating electric conductors and the like
IPC: H01B3/30
Filed: 1938-02-14
Abstract: A resinous composition suitable as a wire enamel comprises the reaction product of an aldehyde with hydrolysed polyvinyl ester dissolved in furfurol, the composition being subsequently heated at a temperature sufficiently high to volatilize uncombined furfurol.  In an example polyvinyl acetate dissolved in glacial acetic acid is heated with formalin and concentrated sulphuric acid and after neutralization with ammonia the product is precipitated, dissolved in furfurol, used to coat wire, and baked. Specifications 351,082, 405,986, and 460,347 are referred to.
Patent GB-899153-A (GB)
Title: Improvements in upholstered chairs and the like
IPC: A47C7/40
Filed: 1961-02-07
Abstract: 899,153. Seats; upholstery. HEINEMANN, B. Feb. 7, 1961, No. 4602/61. Classes 52(2) and 52(4) A chair or settee 1 with frame 2 on legs 3 has a pair of uprights 4 between which extend closely wound coil springs 9 which pass through the rear layer 8 of a cushion 6 having a layer 7 of foam rubber and a layer 8 of material such as rubber bonded horsehair. The ends of springs 9 enter holes 10 in the uprights and are secured by screws or pins.
Patent GB-555844-A (GB)
Title: Improvements in soft solders and in the production of same
IPC: B23K35/26
Filed: 1942-04-09
Abstract: 555,844. Solders. BRITISH NON-FERROUS METALS RESEARCH ASSOCIATION, and GUETERBOCK, P. G. J. April 9, 1942, No. 4673. [Class 82 (i)] Soft solders consist of lead, 11-62 per cent. of tin, and silver in an amount from 0.2 per cent. up to 1.75 per cent. for a tin content of 11-32 per cent., diminishing to a maximum of 1.3 per cent. for the maximum tin content; or of lead, 11-55 per cent. of tin, silver as above, and antimony in an amount from 0.25 per cent. up to 0.4 per cent. for the minimum tin content increasing to from 1.4 per cent. up to 1.8 per cent. for a tin content of 32 per cent. and over. The solders may be made by adding to a tin-leadsilver eutectic or to a tin-lead-antimony-silver eutectic one or more of the following: lead, a lead-silver eutectic, and a lead-silver-tin eutectic.
Patent GB-875091-A (GB)
Title: Improvements in or relating to plate belt conveyors
Inventor: ADAMSON JAMES MORRISON
IPC: B65G17/06
Filed: 1960-02-10
Abstract: 875,091. Endless trough conveyers. CABLE BELT Ltd. Feb. 10, 1960, No. 4708/60. Class 78 (1). A conveyer constituted by an endless train of troughs 10 is driven frictionally by ropes 21, each trough being carried by rods 13 and each rod being secured at each side at 14 to an endless rubber band 16 which has a groove 17 which engages the respective rope 21. Each band 16 is provided with two such grooves 17, the upper groove serving to engage the rope on the return path. Each trough has a corrugation 27 for strength and two corrugations to allow relative turning movement between contiguous troughs.
Patent GB-123769-A (GB)
Title: Improvements in Drying Apparatus for Bottles, Jars, Cans or the like Receptacles.
Inventor: SAVY EMILE LOUIS ALFRED
IPC: B08B9/30
Filed: 1919-02-25
Abstract: 123,769. Savy, E. L. A. Sept. 4, 1916, [Convention date]. Bottles, jars, and cans, drying.-In apparatus for drying bottles, cans, jars, &c. after washing, the articles are placed on nozzles 6 supplied with hot air by a fan 5. The nozzles are mounted on a removable plate 7 forming the top of a hollow tray 8 adapted to be slid into and out of the upper compartment 1 of an insulated casing and having openings registering with branches of an air-supply pipe 12. By the arrangement of pipes and dampers shown, the air may be continuously circulated through both compartments, being heated by steam pipes 4 and discharged through the nozzles, or fresh air may be admitted by the pipe 15, heated, and discharged, or fresh air may be drawn in at 11 and discharged, without heating, for cooling the bottles to permit handling. An exit pipe 13 serves for carrying off moist air, and is provided with an hygrometer 16.
Patent GB-306041-A (GB)
IPC: B29D23/00
Filed: 1929-02-13
Abstract: 306,041. Pahl, H. Feb. 14, 1928, [Convention date]. Hose and flexible pipes. -A machine for manufacturing rubber hose having fibrous or textile threads or stands only embedded therein, the adjacent portions of which are adapted to be out of contact with one another, comprises a mandrel a, pairs of grooved rolls b b, b<1> b<1>, b<2> b2, and rotary rings d, d<1>, carrying thread spools e, e<1> positioned between the said rolls. The grooved rolls are adapted to bend strips c, c<1>, c<2> of rubber into tubular form and to combine the same at their seams, while the threads from the spools e, e', which are rotatably mounted on spindles j, j' carried by the rings d, d<1>, are threaded through holes i, i<1> of flanges h, h<1> on the rings and wound upon the rubber tubes. The threads are applied to the mandrel under tension by the provision of braking devices on the spools, while the pitch thereof may be varied by varying the speed of the feed of the rubber tubes on the rotation of the rings d, d<1>. Preferably the rings d, d<1> are rotated in opposite directions so that the threads of the successive layers are wound in the opposite sense. Braid-making devices may be used instead of the rotary spool-rings, while more than one layer of rubber may be interposed between the layers of braid.
Patent GB-852082-A (GB)
Title: Improvements in safe-load indicating devices for cranes or the like
IPC: B66C23/90
Filed: 1958-02-14
Abstract: 852,082. Safe-load indicators for jib cranes. AITKEN, R. L. Feb. 9, 1959 [Feb. 14, 1958], No. 4878/58. Class 78 (4). In a safe-load indicating device of the type in which a control cam causes the maximum permitted load to vary with the reach of the jib, the link 12 (Fig. 1) which moves the cam can be connected to any of several anchorages 21 so that a single surface on the cam can be used with several different jib lengths. The construction shown uses the safe-load indicating device described in Specification 723,070, the anchorages 21 being formed in a plate 15 located on the crane structure. The control cam may have several surfaces 16, 17, 18, 19 (Fig. 2) one of which is selected according to the conditions of use, e.g. whether outriggers are extended. The cam is carried by a spider 10 (Fig. 1) which can be connected in one of several rotary positions to a lever arm 11 on the link 12. Two safe-load indicators 1 can be carried on the usual frame 2 and connected by a balancing beam to the operating lever 8, the two indicators being used under different conditions. In an alternative construction the lever 11 is formed as a circular disc having a series of holes for connection to the lever 12, only one anchorage being provided on the plate 15.
Patent GB-870529-A (GB)
Title: Improvements in or relating to crushing machines used in the manufacture of tea
IPC: A23F3/12
Filed: 1959-02-12
Abstract: 870,529. Roller mills. MARTIN, T. C. Feb. 12, 1959 [Feb. 18, 1958], No. 4956/59. Class 59 [Also in Group VI] A tea crushing machine comprises a framework with vertical side frames 1, 1 slotted inwardly at one side so that the top and bottom portions may be slightly sprung apart to receive housings or blocks 4, 5 which are secured rigidly in position by clamps and which support the ends of rollers 2, 3. As shown cast iron frames 1, 1 have cut-away portions 15 in each of which blocks 4, 5 are secured by a tie bolt and their end shields are bolted to the respective frame 1 to reduce vibration. Roller 2 is a slow speed (60 to 70 r.p.m.) fixed roller and roller 3 is a high speed (about 700 r.p.m.) adjustable roller. Rollers 2, 3 run on tapered roller bearings 23 adjustable when the machine is in operation. Air is fed through the roller shafting 27 to the roller cores 21 and passes through holes 24 therein to the spaces 25 between the cores and the roller segments 26. A conveyer is provided to feed tea leaf to the machine and a magnet may be mounted over the conveyer to remove metallic particles from the leaf. The rollers have straight grooved teeth and helical grooves of 49 degrees 11 minutes inclination.
Patent GB-539676-A (GB)
Title: Improvements relating to the manufacture of printing blocks
IPC: B41C3/06
Filed: 1940-03-18
Abstract: 539,676. Printing-surfaces. TOMLINSON, A. V. (A.E.G. Fahrkartendrucker Ges.). March 18, 1940, No. 5014. [Classes 100 (ii) and 100 (iii)] Printing-blocks of synthetic resin or other plastic material, particularly for ticketprinting machines, are formed by moulding &c. from line-matrices, which are either cast in a type-bar-making machine using positive dies or are produced manually. The blocks are formed in a mould comprising a hollow base 3, Fig. 4, in which the matrix-lines 2 are clamped by a screw, an intermediate frame 4, and a plunger 5. The aperture in the frame 4 is smaller than the matrix-lines, so that they are held down, and is formed with tapered portions 10, so as to be wider towards the plunger 5. Plastic material is introduced into the frame 4, and pressure is applied by means of the plunger 5, so as to form a block 6. The block is secured to a base 9, Fig. 3, by means of claws 11, riveted to the-base and engaging the inclined edges of the block.