baber/WOPTO huggingface dataset:
Patent GB-877732-A (GB)
Title: The antibiotic rifomycin, its components and methods of preparing same
Inventor: SENSI PIERO
IPC: C07D498/08
Filed: 1958-08-12
Abstract: <FORM:0877732/IV (b)/1> <FORM:0877732/IV (b)/2> An antibiotic rifomycin and its components A, B, C, D and E, which are active against gram-positive bacteria and mycobacteria, are produced by cultivating a rifomycin-producing strain of Streptomyces mediterranei especially S. mediterranei ATCC 13685 in an aqueous nutrient medium containing a source of carbon, nitrogen and inorganic salts under submerged aerobic conditions.  The pH is 7-8, the temperature 25 to 37 DEG C. and the duration 24 to 120 hours. Specified carbon sources are glucose, xylose, lactose, sucrose, maltose, glycerol, mannitol, inositol, succinate, starch and dextrin.  Sources of nitrogen are amino acids, peptides, proteins, peptone, meat extracts, yeast extract, soybean meal, corn steep liquor, fish solubles and distillers solubles.  Rifomycin is isolated by filtering the broth with or without adjustment to pH 7.5 to 8.5, adjusting to acid pH and extracting with a water-immiscible solvent e.g. amyl acetate.  The residual aqueous liquid is adsorbed on carbon at an acid pH and eluted with a water-miscible solvent such as methanol.  Some antibiotic is also obtained by the solvent extraction of the mycelium with a water-immiscible solvent.  Rifomycin is recovered from extract by concentrating and (a) adding petroleum ether or other hydrocarbon or (b) extracting with aqueous buffers at pH 7.0 to 7.5 to recover mainly rifomycin B and at pH 10-10.5 to recover other rifomycins. The aqueous buffer contains a stabilizer such as ascorbic acid. Rifomycin is recovered from the aqueous extract by (a) acidification (b) acidification, extraction with organic solvent followed by precipitation with a non-solvent.  Further purification is by adsorption on "Florisil" (Registered Trade Mark).  Rifomycins A, C, D and E are separated from crude rifomycin by countercurrent distribution using methanol/hydrochloric acid/benzene/petroleum ether (10:5:15:5). Rifomycin B is obtained by extracting an organic solvent solution e.g. ethyl acetate solution with a phosphate buffer at pH 6.5 to 7.5.  It forms salts with inorganic and organic bases e.g. sodium hydroxide, dibenzylamine, quinine, 1 p - chlorobenzyl - 2 - pyrrolidylmethylbenzoimidazole, dibenzylethylenediamine and 2-methyl-6-aminoheptane.  It is used in medicinal preparations (see Group VI). <TABS:0877732/IV (b)/1>ALSO:Injections and aqueous solutions for topical use against gram positive bacteria and mycobacteria comprise the antibiotic rifomycin B (see Group IV (b)). An injection comprises disodium rifomycin B, 2-diethylamino-21,61-aceto-xylidide hydrochloride in 5% aqueous diethanolamine.
Patent GB-677446-A (GB)
Title: Improvements in or relating to goods vehicle bodies
IPC: B60J5/14
Filed: 1949-10-11
Abstract: 677,446. Vehicle fittings for loading and unloading. ASSOCIATED COACHBUILDERS Ltd., and ROSCOE, J. E. Jan. 11, 1951. [Oct. 11, 1949] No. 26071/49. Class 78 (iv). [Also in Group XXXII] In a goods vehicle body wherein the rear portion B of the roof and sides is separate from, and telescopes forwardly into the forward portion A of the body to facilitate loading and unloading, the floor of the vehicle is corrugated and provided with tracks 22 to support a wheeled trolley 24. The trolley may be moved forwardly or rearwardly by a cable 26 attached either to the front or rear ends of the trolley and wound on to a hand operated winch 25 mounted at the rear end of the vehicle body.
Patent GB-1091500-A (GB)
Title: Operating circuit for an electrostatic precipitator
IPC: B03C3/68
Filed: 1966-06-10
Abstract: 1,091,500. Electrostatic precipitators. KOPPERS CO. Inc. June 10, 1966 [June 11, 1965], No. 26083/66. Heading H2H. In an electrostatic precipitator, the working potential across the electrodes is periodically and momentarily increased by pulses and the voltage is adjusted according to the presence or absence of sparking in the precipitator. The working voltage across the electrodes 10, 11 is supplied from a variable autotransformer 17 through a rectifier 12 and high-frequency blocking inductor 13. The pulses are generated from a voltage source V1 passed through periodically closed contacts 35A and amplifiers 37, 39 to a switching tube 38 thus causing a pulse to be delivered via a transformer 40 and capacitor 41 to the electrodes. A similar current from source V2 may supply pulses of differing magnitude. Sparkover is detected by a unit 31 which through a relay 50, 50A and relays 35, 80 periodically energized through timing contacts 32, 76 prevents the periodic raising of the working potential by motor 20 by opening contacts 60A. The direction of the motor 20 is reversed if the pulses of lower magnitude from source V2 also cause sparkover by the simultaneous closure of contacts 60B, 90B. In an alternative arrangement the sources 36, 75 may each produce a short wave train of 50 kc/s. or more.
Patent GB-171552-A (GB)
Title: Improvements in and relating to stamp feeding devices
IPC: B65C9/18
Filed: 1920-09-10
Abstract: 171,552. Rogers, T. W., (Krupp Akt.- Ges., F.). Sept. 10, 1920. Feeding webs.-In a feeding device for a stamp affixing or dispensing machine in which a stop first engages and pushes back the end of the stamp strip to buckle it whilst the strip is held against bodily backward movement, and the end of the strip is then gripped and pulled forward by a feed gripper, means are provided for guiding the strip near its end so that the strip has a bent form when engaged by the buckling stop to render the action of the stop more reliable. In one form, Figs. 1 and 2, the strip B passes through a guide track between plates c<7>, c<8> to a feed-gripper Q having a stop shoulder q<1>, which is adapted to press back the end of the strip as shown in Fig. 2 before the gripper closes on to the strip, the strip being held against backward movement by a spring-actuated clamping-member b<1>. The strip is bent upwardly just prior to its engagement by the stop q<1> by a pair of pivoted strips T, which are operated by a sliding member N guided on the undersurface of the plate c<7> and provided with slots for the passage of the ends of the strips T and with an actuating-projection n<2> adapted to be engaged by the end of the grippers Q. A spring P returns the member N and strips T to normal position. The bending ot the strip is controlled by a weak spring or light lever V resting on the strip. When the strip is exhausted, the clamping-member b<1> is moved upwards by its spring c<13> into slots formed in the plate c<8> thereby turning its shaft c<10> which is operatively connected to a suitable device for locking the actuating-mechanism of the machine. In the form shown in Fig 7, the strip is permanently bent near its end by means of a number oi parallel guide discs F extending into the stamp track. Two similar levers G<1> mounted on a shaft G press the strip against the discs F, and the shaft G is carried by a pair of levers K<1> fixed on a shaft K and passing through openings in the slidable member N which is actuated by the gripper Q. When the member N is moved rearwardly the levers G' cause the discs to move slightly in the direction of the arrow y. When the strip is exhausted the levers G<1> move into the spaces between the discs F and an arm g<3> on one of the levers actuates an arm J connected to a locking-device for the machine-actuating mchanism.
Patent GB-496316-A (GB)
Title: Improvements in and relating to boring and end-milling tools
IPC: B23B51/00
Filed: 1937-09-27
Abstract: 496,316. Boring or end-milling cutters. REY, E. Sept. 27, 1937, No. 26168. Convention date, Sept. 25, 1936. [Class 83 (iii)] A drill or end-milling cutter a has the relief 2 behind the longitudinal edges provided only on the end portion of the tool so that the tool may be gripped in an ordinary clamping socket b which engages the arcuate surfaces of the tool between the grooves 1. As wear occurs the relief cuts 2 may be extended axially of the cutter which is drawn out of the socket accordingly. In a modification, Fig. 3, where the cutting end lies some distance from the socket, the tool is gripped in a sleeve c which is itself clamped in the socket b. In another modification, Fig. 4, the relief is made at the part 6 along the whole length of the cutter, the complete relief 2 being made only on the part extending beyond the socket which grips the arcuate portion 10. In a further modification the arcuate surface 10 may be grooved to leave a number of ribs which engage the clamping socket.
Patent GB-681901-A (GB)
Title: Improvements relating to trucks for lifting and transporting loads
IPC: B62B3/06
Filed: 1949-03-08
Abstract: 681,901. Lift trucks. SLINGSBY, Ltd., H. C., SLINGSBY, G.. and SLINGSBY, C. March 3, 1950. [March 8, 1949] No. 26245/51. Divided out of 681,807. Drawings to Specification. Class 78 (iii). The subject-matter of this Specification is identical with that described in Specification 681,807, but the claims differ. Reference has been directed by the comptroller to Specification 481,678.
Patent GB-1038424-A (GB)
Title: Improvements in birefringent polarisers
IPC: G02B5/30
Filed: 1964-06-25
Abstract: 1,038,424. Polarizing apparatus. INTERNATIONAL POLAROID CORPORATION. June 25, 1964 [June 26, 1963], No. 26367/64. Heading G2J. A light polarizer, particularly for producing linearly polarized illumination of work surfaces to reduce glare and increase visual acuity, comprises at least one birefringent element optically arrayed in a centrosymmetric orientation in an isotropic matrix, the birefringent element comprising a uniaxial material having ordinary and extraordinary indices of refraction and the matrix having a refractive index lying therebetween. Thus rays A,B, C, D from various points of a light source 26 encounter refractive indices n a , n b , n c , n d  respectively of the birefringent element which are shown at right angles to the trace of the ray paths as they pass through the index ellipsoid 12, rays A, B being diffused as indicated at 14, 15, because n a  and n b  are greater than n m  (the refractive index of the matrix) and ray D being scattered as shown at 17 because n is greater than n d  whereas ray C is transmitted and polarized generally vertically as indicated at 16 without substantial loss of intensity because n C  equals n m  Consequently if a point source of light 26a, (Fig. 4, not shown) is placed above such a polarizer a central zone 30 of diffused light is surrounded by an annular zone 32 of high intensity vertically polarized light and on extending the point source 26a to an extended source 26, the annular zones 32 overlap. The matrix may be polyvinyl butyrate and the birefringent element consist of uniaxial crystals or molecules such as guanine or guanidine-type compounds or uniaxially disposed birefringent polymers. The birefringent element may be in the form of a plurality of plate-like elements 22, (Fig. 2, not shown) disposed in parallel overlapping relation in the plane of the matrix or comprise a continuous phase sheet so that the polarizer comprises a lamination of a polymeric birefringent element 19 (Fig. 3, not shown) and an isotropic matrix 20.
Patent GB-154415-A (GB)
Title: Improvements in means for supporting curtains and wearing apparel
IPC: A47H2/00
Filed: 1919-10-27
Abstract: 154,415. Manifold, A. C. Oct. 27, 1919. Garment racks.-A wardrobe or garment rack consists of a frame, carrying books, racks, shelves, &c., pivotally attached at one end to the framework of a door and supported at the other end by a bracket attached to the door. Curtains may be arranged to enclose the framework. Fig. 1 shows a framework attached to the door frame by hinges A, and provided with horizontal rails R engaging in slots in the bracket B attached to the door. A covering plate E secures the rails R in the slots. The frame is provided with an overhanging .,section C and may have a shelf F attached for the accommodation of hats.
Patent GB-817739-A (GB)
Title: Process of concentrating nitric acid and apparatus therefor
IPC: C01B21/44
Filed: 1955-09-15
Abstract: <PICT:0817739/III/1> In a cyclic process for continuously concentrating nitric acid by means of a dehydrating inorganic nitrate, nitric acid at a concentration of e.g. 50-70 per cent is passed into the free space of rectifying column 13 from pipe 11 where it is admixed with an aqueous solution of a nitrate, e.g. lithium, magnesium, calcium, strontium or manganese nitrate, at a concentration of e.g. 65-75 per cent and a temperature of e.g. 135-145 DEG  C. which is recycled via a return pipe 12.  The ratio of solution of nitrate to that of nitric acid may be 5-8 to 1.  The upper part of column 13 may be packed with e.g. Raschig rings or may contain bubble cap plates.  Solution from the bottom of rectifying column 13 passes via pipe 19 to a stripping column 20 having a height equivalent to at least eight theoretically perfect distillation plates, a temperature of e.g. 80-90 DEG  C. being maintained at the top of the column and a temperature of e.g. 125-150 DEG  C. at the bottom of the column.  The stripping column may be packed with Raschig rings or Berl saddles or may contain bubble cap plates or slotted plates, and may be in two or more sections.  A dilute solution of nitrate substantially free from nitric acid is passed from the bottom of column 20 via pipe 22 to a boiler 23, heat being supplied by circulating the solution through heat exchanger 24, a temperature of e.g. 175-185 DEG  C. being employed at atmospheric pressure.  A lower temperature may be employed at lower pressures, e.g. 135-145 DEG  C. at 24-26 inch of mercury below atmos. pressure. Concentrated nitrate solution is returned via pipe 29, cooler 31 (if necessary) and pipe 12 to rectifying column 13.  Part of the steam produced in boiler 23 is introduced into the stripping column 20 via pipe 25 while the remainder, which passes through pipe 26, passes to waste.  The proportion of steam returned to stripping column 20 is determined by the temperatures desired in the column.  Acid vapour formed in column 20 is passed through line 21 to the free space of column 13 and thence to the rectifying section of the column together with vapour evolved from the liquid mixture introduced into the lower part of the column.  Vapour from column 13 is passed via pipe 14 to a condenser 15 maintained at a reduced pressure of e.g. 20 inch of water, and part of the condensate formed is withdrawn through pipe 17 while the remainder is returned to column 13 as reflux via pipe 18. The ratio of reflux to product may be 1.5-3 to 1.  Parts of the apparatus coming into contact with nitric acid are preferably of acid-resisting silicon iron alloy.  In a modification (not shown) only sufficient steam is evaporated from the solution in vessel 23 for recycling to column 20, the solution being further concentrated in an additional evaporator at a reduced pressure of e.g. 24-26 inch of mercury below atmos. pressure.
Patent GB-476456-A (GB)
Title: Improvements in and relating to garments
IPC: D06J1/12
Filed: 1936-09-29
Abstract: 476,456. Elastic fabrics; sewing ; wearing-apparel. MARTIN-WHITE, Ltd., and WHITE, J. F. Sept. 29, 1936, No. 26442. [Class 140] [Also in Group VII] A puckered elastic fabric comprises a layer 1, Fig. 1, of material having little or substantially no elasticity to which is secured, at relatively widely spaced intervals, elastic threads or filaments 2, 3 extending in at least one direction and preferably in two directions at right-angles, the threads being applied under tension. The elastic threads may comprise a core 4, Fig. 3, of coagulated rubber latex covered with artificial silk '5 and may be secured to the basic material by stitches 6. The basic material may be a woven or knitted fabric of wool, cotton, silk or artificial filaments or mixtures ; it may be porous or permeable, or it may be finished with waterproofing compositions and resemble oiled silk, American cloth, &c. Closely-fitting garments are made from the elastic fabric by cutting out a piece or pieces without close regard to shape or size and securing together the edges at appropriate positions. Thus, a bathing costume, Fig. 7, is made by taking a rectangular piece of the fabric, hemming the edges 8, 9, securing the remaining edges at 12 and joining the hem 9 for a convenient distance at 13 to form leg openings ; the garment is suspended from the shoulders by a band 14 of tricot passed through the hem 8 and through eyes 15 secured to the hem by loops 16.
Patent GB-1120598-A (GB)
Title: Semiconductor rectifying structures
IPC: H01L25/07
Filed: 1966-06-14
Abstract: 1,120,598. Welding by pressure. D. SCIAKY. 14 June, 1966 [1 Sept., 1965], No. 26500/66. Heading B3R. [Also in Division H1] The invention relates to the construction of a full wave semi-conductor rectifying assembly (see Division H1). Fig. 3 shows the rectifying assembly 1, 2, mounted between conductors 3 connected to the ends of the secondary winding of transformer 14. Direct current is supplied via intermediate conductor 3 and flexible conductor 16 to upper welding electrode 15 thus allowing free vertical movement of electrode 15. The lower electrode 16 is connected to the centre tip on the transformer secondary via face plate 18. Arrangements for use with a three phase supply or a Scott connected transformer with reactances in series in the secondary leads, are also described. Further embodiments relate to a portable spot welding gun and a flash butt welder.
Patent GB-461149-A (GB)
Title: Improvements in liquid filters
IPC: B01D25/00
Filed: 1935-09-25
Abstract: 461,149. Filters. McLEOD, L. M. Sept. 25, 1935, No. 26514. [Class 46] A filter element is built up of a pile of washers 17, Fig. 5, of non-oxidizable material having on one or both surfaces shallow grooves extending in wavy lines from the outer circumference to the central cavity. Such piles may be held by means of bolts 20 between an upper plate 13 with a series of apertures 21, communicating with the central cavity of each pile, and a lower plate 14 which closes the lower ends of the cavities. As shown in Fig. 1, the plates 13, 14 are bolted to a casing 10 which has inlet and outlet tap couplings 11, 12. Water entering the inlet 11, passes to the interior of the filter elements and filters outward, the filtrate passing through a central aperture in the plate 14 to the outlet 12. For cleansing the elements the outlet 12 is connected to the supply tap so that the water passes through the elements in the reverse direction.
Patent GB-937618-A (GB)
Title: Submerged-melt arc welding, composition and process
IPC: B23K35/362
Filed: 1960-07-29
Abstract: A submerged are welding composition consists of particles each of which is composed of a dispersion of microscopically small metal spheres in a matrix composed principally of metal oxide, metal silicate or mixtures thereof and containing a minor proportion of calcium fluoride, the metal comprising from 1-6% by weight of the composition.  The composition is made by mixing comminuted metal with calcium fluoride, fusing, cooling solidifying and crushing the product, and adding this as a late furnace addition to molten oxide &c., just before pouring the latter.  As described, a crushed chill-cast fused mixture of ferrosilicon and calcium fluoride is added to a molten composition p  at 1430 DEG  C. and, after stirring, the mixture is chill-cast and ground to size.  Specified compositions are of the manganese-, calcium-, manganese aluminium-, and magnesium aluminium-silicate types.
Patent GB-619539-A (GB)
Title: Improvements in or relating to the steaming of webs
IPC: D06C7/00
Filed: 1946-09-04
Abstract: <PICT:0619539/IV (c)/1> Apparatus for steaming cloth which has been printed or impregnated with a dye consists of a treating chamber 2 with a header 12 having a plurality of inlet ports 14 arranged immediately above a water bath 13 through which steam is bubbled. The steam is led into the header 12 and thence to a fan 10, the outlet of which is connected to a series of nozzles 7 which direct the steam on to the surface of the cloth.  In a modified form, the cloth is conveyed past the nozzles on a brattice or other conveyer.
Patent GB-781533-A (GB)
Title: Process for the preparation of silicon compounds
IPC: C07F7/08
Filed: 1955-09-16
Abstract: Silicon compounds having at least one hydrogen atom attached directly to silicon are prepared by reacting alkyl-aluminium hydrides with a halogenide or complex fluoride or alkoxy compound of silicon or with a silicon compound containing halogen or alkoxy groups in addition to one or more Si-C bonds.  Specified aluminium compounds are diethyl- and diisobutylaluminium hydrides.  The reaction may be conducted in the presence or absence of solvents, suspension media or diluents. Temperatures up to 250 DEG  C. are usually employed.  In the examples: (1) SiF4 is compressed with diethylaluminium hydride (containing 20 per cent triethyl aluminium) in a pressure vessel and heated to 260 DEG  C.  On distilling, three fractions are produced:-(a) SiH3.C2H5-SiF3C2H5 mixture; (b) <FORM:0781533/IV (a)/1> mixture; and (c) SiH(C2H5)3-SiF(C2H5)3 mixture, the residue being silicon tetraethyl; (2) triethyl fluorosilane is added to diethyl- or di-isobutyl-aluminium hydride to yield triethylsilane; (3) dimethyl dichlorosilane and diethyl aluminium hydride yield dimethyl silane, and similar reactions result from the use of dimethyl- or diethyldiethoxy silanes.
Patent GB-779905-A (GB)
Title: Improvements relating to the tinting of textile fibres
Inventor: SINGLETON FRANK
IPC: D06B1/14
Filed: 1954-09-15
Abstract: <FORM:0779905/IV(b)/1> Apparatus for tinting open width textile fabric to facilitate identification at subsequent processing stages comprises rollers 15, 16 supporting and driving the lap wound fabric 17, and a rubber or flannel covered dye transfer roller 22 which in operation frictionally engages with and is driven by the roller 16 and dips into a dye bath 21.  The bosses 32 supporting the roller 22 may be rotated by turning a shaft 31 so that the roller 22 may be moved into or out of contact with the roller 16.  The roller 22 may be arranged to remain in contact with the dye in the bath 21, or alternatively the eccentricity of the bosses may be such as to raise the roller clear of the dye.  By means of an adjusting screw 36 a bracket 29 pivoted to the frame 19 at 28 may cause one end of the roller 22 to move away from the roller 16 to vary the amount of tint applied across the fabric.  Loose fibres may be stripped from the roller 16 by a pivoted wire covered roller 38 or by a stationary doctor.  In another embodiment (not shown) the roller 22 may comprise a series of detachable sections on a mandrel.
Patent GB-1485048-A (GB)
Title: Ploughs
IPC: A01B3/26
Filed: 1974-08-20
Abstract: 1485048 Plows INTERNATIONAL HARVESTER CO 20 Aug 1974 26815/76 Divided out of 1485047 Heading A2B The subject matter of this Specification is identical with that described in Parent Specification, the claims are concerned with the steerable ground wheel(s) supporting the plow sections adjacent their pivotal connection.