baber/WOPTO huggingface dataset:
Patent GB-923938-A (GB)
Title: Rufomycin
IPC: C12P1/06
Filed: 1961-02-07
Abstract: An antibiotic Rufomycin is prepared by inoculating an aqueous nutrient medium containing an assimilable carbon source, a digestible nitrogen source and inorganic nutrients with Streptomyces atratus nov. sp., IFO 3897 or ATCC 14046, or a Rufomycin-producing mutant or variant thereof, and incubating the inoculated medium at a temperature of from 20 to 35 DEG C.  Rufomycin may be extracted from the broth with a solvent such as alcohol, acetic acid ester or acetone and purified by adsorption chromatography, recrystallization, counter-current distribution or precipitation.  The antibiotic contains two components, Rufomycin A and Rufomycin B which may be separated by dissolving the mixture thereof in ethanol, propanol, butanol or an aqueous aliphatic alcohol containing from 1 to 4 carbon atoms, concentrating the solution and separating out Rufomycin B as crystals to leave Rufomycin A in the mother liquor from where it may be recovered by evaporating the solvent to dryness, preferably under reduced pressure.  Rufomycin A has infra-red absorption bands at 3.0, 3.27, 3.4, 6.04, 6.1, 6.53, 6.64, 6.90, 7.1, 7.32, 7.55, 8.02, 8.54, 8.85, 9.37, 9.80, 10.05, 10.37, 10.96, 11.43, 12.20, 13.15 and 13.55 microns, measured in a potassium bromide disc, ultra-violet absorption maxima at 222, 282 and 355 mm , a specific rotation [a ]21D = -64 DEG  (C = 1%, in ethanol), and approximate composition C 62.3%, H 7.5%, N 11.0%, O 19.2%.  Rufomycin B has infra-red absorption bands at 3.04, 3.26, 3.38, 5.94, 6.05, 6.10, 6.53, 6.6, 6.9, 7.1, 7.25, 7.34, 7.62, 7.85, 8.05, 8.32, 8.50, 8.85, 9.26, 10.35, 10.90, 11.45, 12.15, 13.10 and 13.55 microns, measured in a potassium bromide disc, ultra-violet absorption maxima at 222, 282 and 355 mm , a specific rotation [a ]20D = -120 DEG  (C = 0.5%, in methanol), and approximate composition C 62.3%, H 7.8%, N 11.8%, O 18.1%.
Patent GB-163132-A (GB)
Title: Stop-motion for sewing machine
IPC: D05B69/22
Filed: 1920-02-16
Abstract: 163,132. Fairweather, W. C., (Hamel Shoe Machinery Co.). Feb. 16, 1920. Sewing-machines; starting and stopping gear.- A sewing-machine is equipped with a friction clutch drive by means of which the working speed can be varied and a positive clutch which, in the stopping operation, is put into action and brings the machine up to full speed prior to the machine being positively stopped. A pivot in the needledriving mechanism is moved in the stopping operation to prevent the threading of the needle in the last cycle. During the normal running of the machine, a treadle actuated rod 13 by means of a bowl 19 presses upon a lever 21 and forces the clutch surfaces 11 together with a pressure determined by the desired speed of the machine. A latch 52 projects over the end of the lever 21 and prevents an upward movement sufficient to open the clutch 11 and also engages an arm 50 of a stop lever 40 and holds it from action. To stop the machine the treadle is released and a spring 93 begins to raise the rod 13. A latch 32 then slips into a notch in the rod and holds it until withdrawn by a cam 33 at a predetermined point in the rotation of the machine shaft. When the latch is withdrawn, the rod 13 is moved upward by the spring 93 and a bowl 51 turns the latch 52 so as to release the lever 21 and the stop-lever 40. A spring 85 thereupon turns the lever 21 so as to open the clutch 11 and also to move the part C until the end 27 positively engages the outer member 39 of a positive rollclutch by which the machine is then driven at full speed. At the same time, the plunger 49 of the stop-lever first rides against the face cam 37 and then passing on to the periphery is momentarily depressed by a high part of it and afterward released. During the depression, an arm 54 on the plunger passes under a catch 63 and when the plunger is released by the cam and forced upward by its own spring, the arm 54, in engaging the catch 63, forces a rod 59 upward with it. This rod rotates a lever 58, applies a brake 36 to stop the machine and returns the part C of the main clutch into a middle position in which it is entirely disengaged from the machine shaft. Operative connections with other machine parts. A lever in the needle-driving mechanism is pivoted upon an eccentric part of a shaft 17. When the rod 13 rises to stop the machine, rack teeth upon it rotate the shaft 17 and the eccentric pivot and prevent the needle from moving into the threading position. The rod 59 is connected to a lever 60 by which the needle-thread is removed when the machine is stopped.
Patent GB-1119134-A (GB)
Title: Removal of sulfur dioxide from a gas stream
IPC: F23J15/02
Filed: 1967-01-31
Abstract: Sulphur dioxide is removed from a hot gas stream by adsorption by calcined dolomite dispersed in the gas stream.  Hot gases containing SO2 are directed through a duct to a permeable filter after first cooling the gases to below 900 DEG  F. by means of a heat exchanger and then feeding in calcined dolamite.  The subsequent deposition of the calcined dolomite on the filter enhances the efficiency of adsorption of the sulphur dioxide.ALSO:Sulphur dioxide is removed from a hot gas-stream by adsorbtion by calcined dolomite dispersed in the gas stream.  Hot gases containing So2 are directed through a duct to a permeable filter after first cooling the gases to below 900 DEG F by means of a heat exchanger and then feeding in calcined dolomite. The subsequent deposition of the calcined dolomite on the filter enhances the efficiency of adsorption of the SO2.
Patent GB-226400-A (GB)
Title: Improvements in wind motors
IPC: F03D11/02
Filed: 1924-02-23
Abstract: 226,400. Redfern, C. G., (Worthington, G. E.). Feb. 23, 1924. Shaft couplings.-A windmill transmission shaft is coupled to a shaft T by a volute or coilspring o connecting a flange g on the first shaft to the second shaft T.
Patent GB-252083-A (GB)
Title: Improvements in and relating to apparatus comprising a combined resistance and capacitance
IPC: H01G2/00
Filed: 1925-02-20
Abstract: 252,083. British Thomson-Houston Co., Ltd., and Holbrook, H. S. Feb. 20, 1925. Condensers.-A device which may be regarded either as a leaky condenser or a resistance with a related capacity consists of electrodes sheathed in perforated insulating material and separated by a substance of high resistance, the perforations in the insulating sheaths being so arranged as to check arcing across the resistance material. In the arrangement shown one electrode is formed by a container 3 and a coaxial tube 10 with a lining 4 of perforated ebonite. The other electrode is formed by a tube 6, also sheathed in perforated ebonite and connected to a conductor passing through an insulating bushing 1 on the cover of the container. The device is filled with a liquid, which may be insulating oil if the apparatus is to function as a condenser, water or a solution of common salt if a capacity with a high resistance is required, or a strong solution of washing soda for lower resistance. Partitions 7, 9 of insulating material, such as treated paper, may be interposed between the electrodes to lengthen the path of the current and further reduce any tendency to arcing. Specification 252,069, [Class 38 (v), Electric switches &c.], is referred to.
Patent GB-548539-A (GB)
Title: Wide-band coupling circuits
IPC: H03F1/50
Filed: 1941-04-10
Abstract: 548,539. Filter circuits. PHILCO RADIO & TELEVISION CORPORATION. April 10, 1941, No. 4796. Convention date, April 13, 1940. [Class 40 (iii)] A broad band coupling circuit between a preliminary amplifier V1 and a frequency-changer V2 comprises a shunt resistance arm 4 at the input end, a shunt arm 7, 8 at the output end tuned to the intermediate frequency of the receiver and a series arm 5, 6 of which the inductance is variably coupled to the inductance of the shunt arm and the capacity is adjusted to give the circuit maximum response at the low end of the range of frequencies covered. An example of suitable values of the circuit components for the broadcast band is given. A shielding cam 10 may be provided. Fig. 2 shows the equivalent circuit taking into account the self capacities of the inductances and valves.
Patent GB-449102-A (GB)
Title: Improvements in or relating to methods and apparatus for effecting intimate contact between a liquid and a gas
IPC: B01D47/02
Filed: 1935-02-14
Abstract: 449,102. Treating liquids with gases. BLAW-KNOX, Ltd., New Oxford House, Hart Street, Holborn, London.-(Blaw-Knox Co. ; Blawnox, Pennsylvania, U.S.A.) Feb. 14, 1935, No. 4834. [Class 55 (ii)] Gas and liquid are brought into intimate contact flowing in counter current in a number of stages in the first of which traversed by the gas the liquid is entrained as spray up one or more vertical tubes having their lower edges lying adjacent to the free level of liquid. In a second stage the gas andliquid may flow oppositely through a body of interstitial material, or all the stages may be similar to the first. A casing 2 is divided by a plate 6 into upper and lower compartments 4, 5. One or more vertical tubes 10 extend through the plate down to a point near the liquid level in compartment 5 so that gas introduced at inlet 7 and passing under the edges 9 is caused to atomize some liquid and carry it into the upper compartment in which foraminous material 11 is wetted by liquid fed through a porous or perforated plate 16 or distributed by sprays. The gas then passes through separators 17 to an outlet 18, liquid descending through a pipe 19, and from the separators through a pipe 20, to the body of liquid in compartment 5. In a modification, three or more superposed contact units, each including a nest of vertical tubes passing through a transverse partition are surmounted by a separator. Valved pipes connect the upper compartment of each unit with the lower compartment of the next lower unit, the apparatus being operated so that liquid is circulated in each unit for a period with the valves closed followed by a short period with the valves open and fresh liquid run in. Or a continual liquid flow at a rate regulated by the valves may be effected.
Patent GB-407707-A (GB)
Title: Improvements in the manufacture of yarn
IPC: D01H5/22
Filed: 1932-06-20
Abstract: 407,707. Spinning yarn directly from slivers of bast and long leaf fibres. STONE, M. B., Canton Avenue, Milton, and WILLIAMSON, W. P., Ludlow, both in Massachusetts, U.S.A. June 20, 1932, No. 4944/34. Divided on and addition to 407,690, under which a Specification was laid open to inspection under Sect. 91 of the Acts, June 21, 1932. [Class 120 (ii).] In an apparatus for spinning yarns from bast fibres as described in the parent Specification each of the two slip draft devices consists of a pair of positively driven rollers, e.g. 19, 19<a> and 20, 20<a>, Fig. 1. Alternatively one pair of rollers is driven positively and the other pair frictionally, while in further modifications one device consists of a stationary rod or of a group of rods arranged to provide a tortuous path for the sliver. The rollers 19, 20 are deeply fluted throughout their length while the rollers 19<a>, 20<a> are deeply fluted only at their ends the rollers 19, 20 being positively driven and serving to drive the rollers 19<a>, 20<a>. The latter are carried by a pivoted bracket 21, the roller 19<a> being mounted in a slot 22. In a modification, a number of rods 25, Fig. 5, arranged so that the sliver is forced to follow a tortuous path, are substituted for the upper pair of rollers 19, 19<a>. As shown three rods are fixed in the frame while two other rods joined by a bridge 26 are removably accommodated in slots 27 in a plate 28. When dealing with long uniform fibres a single rod is found to provide sufficient drag. In a further modification, plain rollers 34, 34a, Fig. 7, are substituted for the upper rollers 19, 19<a> the roller 34 being positively driven and the roller 34<a>, which is supported by a bracket 35, being frictionally driven therefrom. Alternative forms of slip draft devices which may be used comprise two positively driven rollers with plain or scratched surfaces, a group of three rollers of which one rests on or is pressed against the other two, and a narrow channel or slotted bar through which the sliver is dragged.
Patent GB-846841-A (GB)
Title: Improved vibratory screening apparatus
IPC: B07B1/00
Filed: 1959-02-12
Abstract: 846,841. Filters. ALLIS-CHALMERS MFG. CO. Feb. 12, 1959 [Feb. 14, 1958], No. 4970/69. Class 46. Material to be wet-screened is introduced into a stationary head-box 24, Fig. 1, in either dry or slurry form, for feeding to a vibratory screen 14. Liquid under pressure from a pipe 33, Fig. 4, is fed into perforate pipes 30, Fig. 1, each pipe 30 being accommodated in a pocket 20 arranged beneath the screen. The up-flowing liquid entrains fines on the portions of the screen overlying the pockets, the thus-fed liquid and the fines thereafter passing through the respective subsequent portions of the screen and through perforations 37 in a sub-deck 36, Fig. 4. The regions 20a between the pockets are sub-divided by plates 38 and each subdivision contains a resilient ball 41 which by its bouncing maintains the screen 14 free from blinding. Only one pocket need be provided.
Patent GB-548667-A (GB)
Title: A device for use in withdrawing yarn from bobbins and the like
IPC: B65H59/08
Filed: 1941-04-17
Abstract: 548,667. Unwinding yarns from bobbins &c. MELLOR, BROMLEY & CO., Ltd., BROMLEY, T. C., and SHAW, J. April 17, 1941, No. 4985. [Class 120 (ii)] A device for use in preventing snarling when withdrawing yarn from bobbins and the like comprises an encompassing enclosure for engaging the periphery of the wound package and exercising a constrictive pressure thereon throughout the decrease in the bobbin diameter as the yarn is withdrawn. The enclosure comprises a number of elements 22 engaging the surface of the package over its length and means for maintaining contact as the diameter of the bobbin decreases. The elements 22 are constituted by the strands of an endless thread strung backwards and forwards between the four prongs of a spider 21 and eight guide eyes 23 in a base plate 10. The bobbin 15 is positioned by three spring clips 14 on a bobbin stand 16 carried by a bracket 13 mounted on uprights 11, 12 on the base 10. A bracket 17 is adjustable on the longer upright 11 and supports a vertical pendant rod 18 carrying a porcelain. eye 19 while the spider 21 is carried by a light tension spring 20 encircling the upper part of the rod 18. As. yarn is drawn off through the eye 19 the strands 22 exercise a gentle constrictive effort on the bobbin sufficient to prevent ballooning and as the diameter of the bobbin decreases the spider 21 is drawn upwards on the rod 18 by the spring 20. It is preferred to constrict the strands 22 through a longitudinallymovable ring or washer 24.
Patent GB-557362-A (GB)
Title: Improvements in radio-reception
IPC: H04B7/08
Filed: 1942-04-15
Abstract: 557,362. Wireless receiving systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and McDONALD, G. J. April 15, 1942, No. 4986. [Class 40 (v)] In a diversity reception system each receiver generates a control potential dependent on the received signal strength, the several potentials being fed to corresponding impedances arranged in star formation to produce a differentiated control potential which is applied so as to eliminate all but the best outputs from the common output of all the constituent receivers. As shown in Fig. 1, receivers Rl ... R3 feed a common low frequency output point LFC through individual switches S1 ... S3. Automatic gain control potentials derived in known manner are fed by lines AGC1 ... AGC3 to the ends O1 ... 03 of resistances Z1 ... Z3 connected together at P. The voltages between the point P and the free ends of the resistances are applied to operate the switches S1 ... S3. If at any instant the signals received by one or more receivers are markedly weaker than the others, the corresponding free ends of the resistances O1 ... O3 become positive relative to the point P. This is used to operate the corresponding one or more of the switches S1 ... S2 to eliminate the receivers having the weaker signals. The switches may be polarised electromagnetic relays or thermionic valves, or the voltages may be used directly to paralyse a rectifier or amplifier in the signal channel. Fig. 3 shows a thermionic switching means for the receiver R2. The low frequency output is applied to the ends of a potentiometer comprising a resistance FR and the anode-cathode space of a valve V. The desired output is taken from across V and applied at T2<SP>1</SP> to the common output transformer. The A.G.C. potentials are applied to the free ends of resistances Z1 ... Z3 and the voltage across Z2 is used to control the output of R2 by being applied to the grid of V. If the signal received bv R2 is small, 02 goes positive. valve V conducts and practically short-circuits the output from R2. In a modification, Fig. 4 (not shown), there is inserted between the network Z1 ... Z3 and the switching means, a circuit comprising three reciprocally connected valves which ensures that only one receiver is connected to the outnut at a time, and also prevents a change-over unless a substantial change in relative signal strength has occurred. In a further modification. Fig. 5 (not shown), instead of using the normal A.G.C. potential, a control potential is independently derived bv rectification of part of the intermediate frequency energy.
Patent GB-683526-A (GB)
Title: Improvements in or relating to washing compounds
Inventor: LIND OTTO
IPC: C11D3/08
Filed: 1949-02-25
Abstract: A washing preparation in the form of a dry powder not containing oxygen-evolving substances consists of lathering agents, salts of alkaline reaction, and minor quantities, preferably 2 to 10 per cent, of magnesium silicates which are colloidally soluble in water. Magnesium metasilicate is preferably used and minor quantities such as 1 to 5 per cent of a salt of phosphoric acid more anhydrous than orthophosphoric acid may be present; also, if desired, neutral salts. The magnesium silicate may be precipitated as a gel in the composition prior to its conversion to a dry powder, or it may be separately formed by boiling silicic acid with magnesium chloride solution in the presence of alkaline substances and added to the composition.  In examples: (1) sodium silicate solution, caustic soda lye, and magnesium chloride solutions are well stirred and then calcined soda and soap added.  On cooling the mixture is powdered by an edge runner.  (2) Calcined soda, sodium chloride, soap and sodium cellulose glycollate are mixed and separately prepared magnesium metasilicate added.  The composition is cooled and pulverized. (3) A mixture of precipitated magnesium silicate and sodium salt of cellulose glycollic acid is sprinkled into water and a mixture of anhydrous soda, sodium pyrophosphate, sodium chloride, and soap added.  The mixture is powdered after cooling.  (4) An alkyl sulphonate glue, sodium chloride and sodium salt of cellulose glycollic acid are stirred into water and sodium silicate solution, caustic soda lye and magnesium chloride solution added. Finally calcined soda is incorporated and the composition pulverized after solidification.  (5) A washing preparation for coarse fabrics is obtained by stirring soda, sodium chloride, sodium salt of cellulose glycollic acid and sodium alkyl naphthalene sulphonate into water and powdering the material after cooling.  Precipitated magnesium silicate is finally added. (6) A sulphonate fatty alcohol powder, calcined soda, sodium chloride, and sodium cellulose glycollate are added to water at 100 DEG  C. and the material atomized into cold air.  Magnesium metasilicate powder is atomized at the same time into the mixture, producing a dry powder suitable for white fabrics. Specification 683,527 is referred to.
Patent GB-1211674-A (GB)
Title: Process for producing fatty acid esters of sugars
IPC: C12P19/44
Filed: 1969-01-30
Abstract: 1,211,674. Fatty acid sugar esters by fermentation. KYOWA HAKKO KOGYO CO. Ltd. 30 Jan., 1969 [1 Feb., 1968], No. 5216/69. Heading C2C. Fatty acid esters of sugars are prepared by culturing a hydrocarbon-assimilating microorganism capable of producing said esters under aerobic conditions in an aqueous medium containing a hydrocarbon or a mixture of hydrocarbons as the main carbon source, accumulating the ester in the resulting liquor and recovering the product therefrom. Suitable microorganisms are selected from the genus Arthrobacter, Brevibacterium, Micrococcus, Corynebacterium, Mycobacterium, Candida and Aspergillus and suitable starting hydrocarbons are 6-25 C n-paraffins. Products include esters of trihalose and/or glucose and anthronic acid (a higher fatty acid having a #-hydroxy group and branching at the α-carbon), trihalose and an acid C 20 H 41 O 2 , a fatty acid and glucose, trihalose and an acid C 32 H 64 O 2  and stearic acid and sucrose.
Patent GB-575526-A (GB)
Title: Improvements in or relating to the rollers of band conveyors and the like
IPC: B65G39/09
Filed: 1944-03-21
Abstract: 575,526. Endless-belt conveyers. JOHNSON & SONS, Ltd., C. H., and NEESOM, C. H. March 21, 1944, No. 5239. [Class 78 (i)] In idler rollers for endless-belt conveyers of the kind comprising a shaft carrying bearings on which the roller is mounted, each bearing being located in a housing which includes a lubricant holding space, the housing is sealed at both sides or closed at one side and sealed at the other. Each roller comprises a steel tube 10 with cast-iron inserts 11, 12 pressed into and secured to its ends. Each insert is bored centrally to provide a series of steps, corresponding steps being formed in a stationary shaft 19. The step 11c in the insert 11 forms a space 18 which contains grease supplied through a nipple 15. The intermediate step 11b receives a roller bearing 16, and the step 11a is occupied by a seal 17. The arrangement in the insert 12 is somewhat similar, but a small seal unit 20 is placed at the outer side of the grease chamber 23.
Patent GB-101665-A (GB)
Title: Improvements in connection with the Extraction of Silver, or both Gold and Silver, from their Ores.
Inventor: JOHNSON JAMES YATE
IPC: C22B11/00
Filed: 1916-04-10
Abstract: 101,665. Johnson, J. Y., (Caron, M. H.). April 10, 1916. Treating ores preparatory to extracting precious metals.-Ores containing silver, or silver and gold, in which manganese dioxide is present, are subjected to a reducing-roast before being treated by the amalgamating or the cyaniding process.
Patent GB-384486-A (GB)
Title: Improvements in or relating to liquid fuel burners and furnaces for use therewith
IPC: F23D11/10
Filed: 1932-02-22
Abstract: 384,486. Liquid-fuel burners. SELAS AKT.-GES., 10, M³llerstrasse, Berlin. Feb. 22, 1932, No. 5250. Convention date, Feb. 23, 1931. [Class 75 (i).] A liquid-fuel burner comprising an oil nozzle 3 and a surrounding air nozzle 6 discharges a mixture of oil and air into a furnace chamber 14 through a tubular mouthpiece 8 and a conical flame passage x, the mouth piece 8 also receiving secondary air from the main air conduit 4 and being formed with slots or perforations 10 through which combustion products from the passage x are drawn. The secondary air supply is regulated by a throttle valve 7. The flame passage x is formed cylindrically at 15 so as to cause eddies to form at the surface of the fuel jet.