baber/WOPTO huggingface dataset:
Patent GB-564283-A (GB)
Title: Improvements in or relating to the production of vitamin concentrates
IPC: A61K31/59
Filed: 1942-09-11
Abstract: Vitamins A and D are recovered from concentrates derived from the unsaponifiable fraction of a fish or fish liver oil by reacting the concentrates with an anhydride or halide of an aromatic carboxylic acid or of an aliphatic dicarboxylic acid under such conditions that in the main only the vitamin A primary alcohols are esterified, treating with an aliphatic or alicyclic hydrocarbon solvent, and extracting the esters with an aqueous solvent which is miscible with the esterified constituents but not with the hydrocarbon solvent. The vitamin D is the recovered from the hydrocarbon solvent by extraction.  The concentrates are preferably first freed from cholesterol, for example by freezing out from solutions in methanol, ethanol, isopropanol, methylacetate, ethylacetate, methyl formate or ethylformate. Specified hydrocarbon solvents added after the esterification are heptane, octane, nonane, petroleum ether, cyclohexane and methyl-cyclohexane, and aqueous solutions of methanol, ethanol, isopropanol, diacetonealcohol, acetic acid and mixtures thereof may be used for extracting the vitamin A esters. The same solvents, but in higher concentrations may be used for extracting the vitamin D secondary alcohols.  For the esterification of vitamin A, benzoic, phthalic and naphthalic anhydrides and adipic, sebasic and succinic anhydrides and chlorides are specified. Pyridine, quinoline or piperidine may be used as esterification catalysts, and these are removed with the acylating agent, when the esterification has proceeded sufficiently far, by extracting with a mixture of aqueous methanol and acetic acid.  In an example, the unsaponified fraction of cod liver oil, after removal of cholesterol is esterified in pyridine with phthalicanhydride; the pyridine is removed, petroleumether added and the vitamin A esters extracted with 90 per cent methanol and the vitamin D with 95 per cent methanol; after removing the solvents, vitamin D as p  well as the vitamin A esters are treated with alcoholic potash to saponify any ester present.  In further examples, esterification is effected with phthalic anhydride in benzene and benzoic anhydride in pyridine.  In a modification, after removal of the vitamin A esters, the vitamin D may be esterified before being extracted from the hydrocarbon solvent.  The unsaponifiable matter used as starting material may be obtained by the process of Specification 550,845.  The products may be used to fortify foods or mixed with activated ergosterol, cholesterol or 7-dehydrocholesterol.
Patent GB-904359-A (GB)
Title: Apparatus for the detection of changes occurring in electrical quantities
IPC: G01R1/30
Filed: 1959-04-15
Abstract: 904,359. Switching systems. MASCHINENFABRIK OERLIKON. April 15, 1959 [April 22, 1958], No. 12848/59. Class 38 (4). In a circuit for detecting changes between a voltage and a current which may be used to detect changes in active or reactive quantities, the rectified geometric sum of the two quantities is compared with the rectified geometric difference thereof in a differentiating device, such that the resultant current is proportional to the magnitude and direction of the algebraic difference between the two rectified quantities. Transformers 15a, 15b each have a secondary winding connected to a rectifier 6a, 6b, respectively, and two primary windings connected in additive and substractive relationship respectively to a potential transformer 1 and a current transformer 3. Changes in the output of the rectifiers is passed through an air gapped transformer 13 to a double-acting relay 12. In another arrangement the current transformer output is impressed on the voltage transformer output by means of resistors in series with the rectifiers. Three-phase arrangements are also described in the Specification using either two or three transformers. The relay may be polarized to respond to either rising or falling values. In another arrangement a cold cathode discharge tube is triggered to operate a relay when the difference voltage exceeds a determined value.
Patent GB-626855-A (GB)
Title: Fuel supply apparatus for internal combustion engines
IPC: F02M59/00
Filed: 1946-04-29
Abstract: 626,855. Centrifugal governors. AMERICAN BOSCH CORPORATION. April 29, 1946, No. 12879. Convention date, April 5. [Class 57] [Also in Groups XXVII and XXVIII] In a fuel-injection system, fuel is supplied by a gear pump to a fuel-injection pump which distributes the fuel to the various engine cylinders. The gear pump supplies fuel to a chamber 59 and fuel flows to the injection pump chamber 24 through a needle valve 30 attached to a spring-pressed diaphragm 58 and controlled by a centrifugal governor 3 driven from the shaft 8. The fingers 49 of the governor weights 47 move a sleeve 50 contacting the forked end of a lever 52 resiliently connected to a lever 53 actuating the valve 30. Manual control of the fuel is effected through a lever varying the tension of a spring 55 acting at the pivot of lever 52, and rotation of the lug 56 by another lever rotates the lever 52 to cut off the fuel. An adjustable leafspring 66 acts on lever 53 to provide a slowrunning adjustment.
Patent GB-1135030-A (GB)
Title: Means for and method of controlling casting
IPC: B22D18/04
Filed: 1967-03-20
Abstract: 1,135,030. Raising liquids by gaseous pressure. AMSTED INDUSTRIES Inc. March 20, 1967 [May 13, 1966], No. 12879/67. Heading F1R. [Also in Division B3] Molten metal 22, from a ladle 20 placed in a pressure vessel 10, is forced up a tube 24 into a mould 28 by air from a conduit 18, the air flow being maintained by valves 52, 54 operated by controllers 62, 64 which are self regulating according to the difference in air pressure across an orifice 42 in the conduit. First, a graphite stopper 32 is lowered to close the mould ingate 38 and simultaneously to operate a switch to cause a twoway valve 98 to direct air (from the main or an auxiliary supply) to open a main valve 56 in the air conduit 18 and close an exhaust valve 60. The switch also operates a two-way valve 76 to supply the air to the controller 62 also, so that the latter allows the air to pass to the valve 52 to open it and permit and maintain a constant main air flow to the pressure vessel 10. The resulting flow of metal into the mould 28 raises the stopper to operate a switch to both cause the valve 76 to close the valve 52 and cause another two-way valve 88 to open the valve 54. The latter permits a lower rate of air flow to the vessel 10 until the mould 28 is filled. The final rise of the stopper 32 actuates a switch to cause the valve 88 to close the valve 54. The stopper is then lowered to close the ingate 38 and simultaneously operate the valve 98 to cause the main valve 56 to close and the valve 60 to open and exhaust the air from the vessel 10.
Patent GB-1127278-A (GB)
Title: Improvements in or relating to valve structures and the assembly thereof
IPC: F15B15/22
Filed: 1967-03-20
Abstract: 1,127,278. Fluid-pressure apparatus. WESTINGHOUSE AIR BRAKE CO. March 20, 1967 [May 19, 1966], No. 12955/67. Heading F1P. [Also in Division B3] An externally adjustable throttle valve controlling the flow of fluid exhausted through bores 12, 8, 13, 14 in a cylinder head 4 by a piston 5 as it nears the end of its stroke in a cylinder 2 comprises a threaded member 19 and a nut 20 engaged therewith, the valve member thread being distorted at one end to prevent movement of the end through the nut and the nut being secured against withdrawal from the bore 8. Adhesive 28 is placed in a groove 27 in the nut to prevent escape of fluid under pressure and a shoulder 18 is peined over the nut to secure it to the body. A fibre insert 31 is located in an annular cavity in the nut to act as a seal between the nut and the member 19.
Patent GB-921110-A (GB)
Title: Improvements in or relating to rotary printing machines
IPC: B41F13/14
Filed: 1960-04-12
Abstract: 921,110. Printing-machines. SOCIETE ALSACIENNE DE CONSTRUCTIONS MECANIQUES. April 12, 1960 [April 24, 1959], No. 13068/60. Class 100 (2). A printing machine for printing on textile fabrics &c. comprises a plurality of printing rollers 4 in contact with a freely mounted cylinder 3 and a plurality of toothed wheels 8 attached to said rollers and engaging a toothed driving wheel 7 attached to and coaxial with said cylinder; the diameter of the wheel 7 being different from that of the cylinder 3 so that when each roller is adjusted by its individual longitudinal adjustment means 21 the roller periphery slides over the periphery of the cylinder. Each roller 4 is supported at each end by an arm adjustable in length and constituted by a pneumatic jack 13 which is pivoted to the machine frame at 17 and applies the roller to the cylinder with the appropriate pressure. Each adjustment means 21 is pivoted about a pin 22 and comprises a threaded rod, Fig. 2 (not shown), which can be extended or withdrawn by rotation of a hand wheel 37 acting through worm gear so as to adjust the angular position of the arm 13. The swinging motion of the arm 13 displaces the shaft of the associated printing roller along an arc of a circle coaxial with the driving gear 7 to cause the driven pinion 8 to accelerate or decelerate the surface speed of its roller 4 with respect to the surface speed of the other printing rollers. If the axis 17 is not parallel with the shaft 2 of the cylinder 3 the length of the arm 13 may vary as a function of its angular position to retain contact between the cylinder and the roller.
Patent GB-1029999-A (GB)
Title: Process for the manufacture of a growth-promoting substance
IPC: C07D241/08
Filed: 1963-04-02
Abstract: Coprogen and desferricoprogen are manufactured by growing Penicillium citrinum M 3614, Penicillium camemberti M 98, Penicillium urticae 4277, Penicillium notatum 1613 or Penicillium chrysogenum 4360 under aerobic conditions in an aqueous nutrient solution containing a carbon source and a nitrogen source and one or more inorganic salts. Coprogen and/or desferricoprogen are isolated from the culture filtrate and desferricoprogen may be converted to coprogen by addition of an iron salt, e.g. ferric chloride, or desferricoprogen may be obtained from coprogen by removing iron with an iron complex-forming substance, e.g. 8-hydroxyquinoline. The nutrient medium preferably contains less than 10-7 mol./litre of iron. The coprogen may be isolated by adsorption or by solvent extraction. Examples are given.
Patent GB-383886-A (GB)
Title: Improvements in and relating to mixing, kneading, shredding and like machines
IPC: B01F7/04
Filed: 1932-05-06
Abstract: 383,886. Mixing, shredding, &c. machines. BAKER PERKINS, Ltd., Hythe Road, Willesden, London. May 6, 1932, No. 13097. Convention date, May 26, 1931. [Classes 59 and 86.] In a mixing, shredding, &c. machine of the kind in which blades rotating on parallel axes in a casing comprising a pair of arcuate troughs separated by a saddle piece, with which the blades co-operate, the rotary elements comprise two or more helical blades 13, 14 extending the whole length of the trough and mounted on arms 15, 16 approximately at right angles. The blades may be serrated, or fitted with serrated plates; the saddle 21 may also be serrated.
Patent GB-329803-A (GB)
Title: Improvements in or relating to the manufacture of refractory materials
IPC: C04B33/16
Filed: 1929-04-27
Abstract: 329,803. Jackson, L. Mellersh-, (Hartford-Empire Co.). April 27, 1929. Refractory substances.-Grog for use in the manufacture of refractories is prepared by compressing the initial materials under a pressure greater than 200 lb. per sq. in., firing and grinding. The finished refractories are dense and free from voids and resistant to corrosion by molten glass.
Patent GB-456150-A (GB)
Title: Improvements in or relating to the manufacture of halogen-containing rubber derivatives
IPC: C08C19/16
Filed: 1935-05-03
Abstract: Substantially colourless solutions of rubber hydrochloride are made by treating a freshly prepared solution of rubber hydrochloride made by reacting hydrogen chloride with rubber dissolved in a suitable solvent, e.g. benzene, with a small quantity of an oxidizing agent other than air.  The preferred oxidizing agent is chlorine, but benzoyl peroxide, oxygen and compounds which readily oxidize with liberation of either oxygen or chlorine, e.g. benzene sulphonchloramides, are also suitable. In an example, hydrochloric acid gas is passed through a solution of 40 parts of masticated rubber in 900 parts of benzene until 20 parts of HCl have combined. The solution is reddish brown in colour.  Chlorine is bubbled through this solution for four hours at the rate of one-third of a litre per hour per litre of solution.  The resulting solution is practically colourless.
Patent GB-133555-A (GB)
IPC: G10F5/06
Abstract: 133,555. Tye, A. J. W. Jan. 6, 1919. Player-pianos; w i n d i n g - mechanism; music rollers.-The take-up roller in a player piano is mounted apart from the tracker bar and music spool, and is provided with a connecting tape or band. As shown in Fig. 1, the music stool g is mounted in a casing c upon the damper bar of an upright piano, and the take-up roller i is mounted just above the keys in an extension frame c<1> which also holds a guiding bar or roller n for the tune-sheet. The connecting tape j, Fig. 2, is accommodated in a recess i<1> in the roller i and carries a connecting member k.
Patent GB-1303572-A (GB)
IPC: B01F5/04
Filed: 1971-05-05
Abstract: 1303572 Jet pumps PIAB AB 5 May 1971 [14 May 1970] 13385/71 Heading F1E An ejector has a number of channels 9 for compressed air, opening into a venturi tube 1 into which an inner tube 3 is fitted so as to be axially movable to increase or decrease the area of channel orifices. Air under pressure is fed to the channels 9 via an annular channel 13 formed between the outer surface of the venturi tube 1 and a sleeve 2 in which the venturi tube is rotatable but axial movement is prevented by pins 10 and a groove 11. A stop screw 18 limits movement of the inner tube 3 out of the venturi tube. Inter-changeable sleeves may be provided to fit in the inner tube 3 and portion 5 of the venturi tube to vary the cross-sectional area.
Patent GB-1136321-A (GB)
Title: Improvements in or relating to radiation detection systems
Inventor: QUARTLEY ARTHUR LESTER
IPC: G01S3/787
Filed: 1961-04-13
Abstract: 1,136,321. Photo-electric position finding. MINISTER OF TECHNOLOGY. 19 March, 1962 [13 April, 1961], No. 13414/61. Heading H4D. A radiation detection system comprises a chopper for chopping radiation incident upon a photosensitive cell; a source of local reference signals at chopper frequency; and mixing means for mixing the output from the detector cell and the local signals, whereby an output is obtained from the mixing means corresponding to a target moving across the field of view of the detector cell. In Fig. 1 infra-red radiation is focused by mirrors 1 and 2 on to a chopper 3 and then passes through a lens system 5 to a lead sulphide filter 6A and a calcium aluminate filter 6B to a detector 7 of the indium antimonide type. The detector 7 feeds into a signal amplifier 8 the output of which is applied across input terminals of a resistance bridge 9. A lamp 10 is placed behind the chopper diametrically opposite the lens system 5 and is observed by a lead sulphide photosensitive cell 11 which is connected in one arm of the bridge 9. A low pass filter 14, connected through blocking condensers 15 to the bridge 9, feeds output signals to a pen recorder 16. In operation unwanted signals or signals from a stationary target are modulated by the chopper and demodulated by the bridge circuit at chopping frequency and produce a D.C. output from the bridge 9; moving targets are chopped at a frequency differing from the chopping frequency by an amount proportional to the transverse velocity of the target, and so produce a slowly alternating signal which passes to the recorder. The low pass filter may have a pass band from 0.2 to 5 cycles per second. In a modified circuit designed to improve sensitivity, Fig. 2 (not shown), the outputs of cells 7 and 11 are fed through amplifiers to a modulator, the output of which passes through a low-pass filter to a second modulator; the output of the second modulator passes through an amplifier to a third modulator, the output of which feeds the recorder; an input is provided to the second and third modulators from the amplifier following the cell 11. In another modification, Fig. 3 (not shown), the input beam is split optically into two beams which pass through diametrically opposite parts of the chopper to two detectors, the outputs of which are amplified and then subtracted in a modulator. This system also gives information about the direction of target movement, so that the addition of a further pair of detectors to occupy a chopper diameter at right angles to the existing chopper diameter provides the basis of a step-by-step lock-follow system.
Patent GB-257547-A (GB)
Title: Improvements in optical devices for photographic, kinematographic and other purposes
IPC: G02B27/14
Filed: 1926-05-28
Abstract: 257,547. Romer, J. F. May 28, 1926. Prisms; three-colour systems.-Optical systems for producing simultaneously four equal images in pairs, the images in each pair being relatively erect, but laterally reversed, consist of a pair of prisms P<1>, P<2> having an inclined surface X<1> upon which rays from the object O are incident and by which they are refracted to a semi-transparent surface S, arranged parallel to the direction of the axial incident ray from the object. The surface S divides the incident beam which emerges from the prisms at the surfaces X<2>, X<3> and is received on the surface X<4> of a compound prism P<3>, P<4>. A semi-transparent surface S<1> on this prism again divides the beam, part of which is reflected from the surface R'. The four parts of the original beams are received by four lenses L' - - L<4>. which produce four images M<1> - - M<4> of the object O as shown in Fig. 3. A modification is described in which the rays passing through the surface S' are reflected twice to move the two images laterally. Colour filters may be used in conjunction with the system for utilizing the images produced for colour-photography. The same system may be used for the optical projection of four images on to a screen.
Patent GB-734234-A (GB)
Title: Improvements in or relating to forging presses
IPC: B30B15/00
Filed: 1953-05-14
Abstract: 734,234. forging-machines. U. S. INDUSTRIES, Inc. May 14, 1953 [Jan. 19, 1953], No. 13512/53. Class 83 (4). A forging press has a horizontal die-supporting surface 28, Fig. 3, provided by a main wedge 27, mounted on the sloping surface 26 of the press bed 2, which wedge is adjustable, for varying the height of the supporting surface, by a plurality of secondary wedges 37, 38 disposed beneath a portion of the main wedge and positioned on said sloping surface 26, actuating means being provided to effect reciprocal movement of said secondary wedges thereby to impart to the main wedge a multi-directional movement upon the sloping surface. The secondary wedges are mounted in a recess 36 in the main wedge and are moved in opposite directions such as 55, 56, Fig. 2, transversely of the main wedge by housings 48, 49 which are in threaded engagement with screwed rods 47, 45 extending from the respective wedges 37, 38. The housings are axially located in the press frame and carry intermeshing gears 50, 51 which are driven manually or by mechanical means. A locking bolt 34 secures the main wedge 27 in its adjusted position. The press has a vertically movable slide operated from an eccentric shaft through a connecting rod.
Patent GB-109661-A (GB)
Title: Automatic Safety Bolt Appliance for Doors of Railway Carriages and other Vehicles.
Inventor: WEAR GEORGE
IPC: E05B65/42
Filed: 1916-09-23
Abstract: 109,661. Wear, G. Sept. 23, 1916. Railway-carriage doors and the like, fastening automatically. - In a fastening- device for railway-carriage dcors operated by the rush of air due to the motion of the train, two metal cups B having movable upper portions B<1> are mounted at opposite ends of a lever U, which operates a sliding bolt A through a connecting-rod E. The movable portions B<1> turn on pivots F and are swung upwardly into the position shown by the pressure of the air. The lower cup is heavier than the upper so that the lever C is retained in the vertical position when the train is stationary.
Patent GB-135162-A (GB)
IPC: B65B11/42
Abstract: 135,162. Leumann, R. Nov. 9, 1918, [Convention date]. Packeting by wrapping-up. - Relates to machines for wrapping-up articles of parallelopipedal form, of the kind in which flaps 61, 62, Fig. 7, having a common peak 63 in the median plane of the article are formed at the ends and are then folded over the article. According to the invention, the neatness of the package is increased by folding each peak 63 on to the flap 62 that is first folded on to the side of the article, the folding- line 64, Fig. 10, of peak being disposed so that the new peak 66 is in the median plane 48. The machine shown in Fig. 1 comprises an intermittingly rotating plate 2 provided with six carriers, each consisting of a rigid jaw 3 and a pivoted jaw 8, urged by a spring 11. When the plate 2 is stationary, an article 21 and a length of paper 17 are fed into a carrier, and the paper is wrapped around three sides of the article, by means of a pusher 23. The paper passes through guides 14. 15, 18 and is severed by knives 16, the length being determined by a stop 19. Upon rotation of the plate, the projecting length of paper is folded on to the fourth side of the article and, when the plate 2 is again stationary, a finger 31 on a lever 30 enters the carrier and folds the projecting length on to the top of the article. When the plate 2 is again stationary, a reciprocating fork 37, on a lever 36, forms, at each end of the package, the two flaps 61, 62 and the folded part 70. The inner faces of the fork-tines are at a distance apart which is equal to the width of the article, and the end of each tine is formed as a wedge, of the shape shown in Fig. 3 and comprising curved wings 40, 41, upon which the flaps 61, 62 form. The nose 38 of the wedge is curved from the inner to the outer face. The flaps 61, 62 are folded downwards upon the article and the peaks 63 are folded upon the flaps, as shown in Fig. 10, by the action of two stationary guides 42, arranged one at each end of the package, and each comprising two twisted surfaces 43, 44, separated by a slot 52. The flaps are carried, peak foremost, into engagement with the guides by means of the fork 37, which thereupon returns. During the movement of the plate, the surfaces 44, 43 fold the flaps 62, 61 respectively, and the slot 52 causes the peak 63 to be folded sharply on the line 64. In the further movement of the plate, the peak rides along a conical surface 54 at the end of the slot, and, finally, the flaps and the peak are pressed close together by the flat surface 57 of the guide. When the plate is arrested, the package is ejected into a shoot 59 by means of a plunger 5, operated by an arm 58. The walls of the shoot are formed with guides for folding the projecting flaps 70, Fig. 10, into contact with the top of the package.
Patent GB-135633-A (GB)
IPC: A62C13/78
Abstract: 135,633. Money, G. J. Dec. 5, 1918. Extincteurs.-A portable fire-extinguisher &c. is supported by a pivoted arm a with a hexagonal aperture &c. to interlock with a nut c or other projection on the extinguisher d, which is fitted with a hook e to engage the arm, as shown. The pivoted arm may be shaped for use as a spanner to unscrew the cap of the extinguisher.