baber/WOPTO huggingface dataset:
Patent GB-929816-A (GB)
Title: Aescin, and its isolation from horse chestnut extracts
IPC: C07J71/00
Filed: 1961-06-14
Abstract: The invention comprises horsechestnut saponin, aescin, C54H84O23.H2O, m.pt. 222-3 DEG C., (a )27 - 18,1 DEG  (c = 5, MeOH), haemolytic index = 1:30,000, and a process for its isolation in salt form by mixing an aqueous or aqueous-alcoholic horsechestnut extract with chloesterol in solid form or in solution, stirring the mixture at elevated temperature for a sufficient time to obtain an aqueous solution having substantially no haemolytic effect, separating the chloesterolsaponin precipitate, exhaustively extracting the washed and dried precipitate with ether, dissolving the insoluble residue in an organic solvent, and removing the organic solvent to isolate pure aescin in salt form, if necessary with purification with active carbon. Detailed examples illustrate the invention.
Patent GB-205470-A (GB)
Title: Improvements in iris-diaphragms
IPC: G03B9/08
Filed: 1923-08-27
Abstract: 205,470. Zeiss, C. [Firm of]. Oct. 14, 1922, [Convention date]. Iris diaphragms fitted with curved blades a, supported at one end rotatably about a fixed axis and at the other end are displaceable relatively to the mount, have the blades a recessed on their hollow side from the point which liee in the centre of the diaphragm when closed to near to the end which is rotatable about a fixed axis.
Patent GB-807806-A (GB)
Title: Improvements in or relating to electromagnetic wave guides
IPC: H01P5/08
Filed: 1956-07-12
Abstract: 807,806. Waveguides. SPERRY RAND CORPORATION. July 12, 1956 [July 12, 1955 (2); July 14, 1955], No. 21583/56. Class 40 (8). A waveguide comprises a channel member 10 having a pair of inner parallel planar surfaces spaced substantially less than a half wavelength apart at the lowest frequency of the transmission band and a connecting surface 12 extending between and perpendicular to the parallel surfaces, a conductive fin 20 being centrally positioned between the parallel surfaces and dimensioned to project from the surface 12 a distance less than the width of the parallel surfaces but not less than a quarter wavelength at the lower frequency of the transmission band. The mode of propagation in such a guide may be understood by considering the guide to be derived by bisection of a " sandwich " type strip line (Fig. 2) supporting a second order mode of propagation. Cut-off for this mode occurs when the width of the fin 20 is equal to a free space quarter wavelength and cut-off for the next higher mode occurs when the width of the fin is three quarters of a free space wavelength. The guide thus has a bandwidth one and a half times that of a conventional rectangular guide. A coaxial terminal 50, Fig. 7, may be coupled to the guide by extending the central conductor 34 through an end wall 30 to form a probe. The end of the fin 20 lies under the probe and is terminated short of the end wall 30. Alternatively the probe may extend vertically from a carriage adapted to slide horizontally along the edges of the parallel walls of the guide (Fig. 5, not shown). The guide may be terminated by a slotted resistive card 44, Fig. 6, arranged obliquely in the guide. Figs. 9, 10, 13 shown respectively a plan, elevation and cross-section of a transistion between a rectangular waveguide 110 and a guide 120 according to the invention Since the rectangular guide has a broad dimension greater than a half wavelength, the broad walls of 112, 114 must be tapered to the width of the connecting wall 126 of the guide 120. In order that the rectangular guide 110 shall be above cut-off during the transition it is provided with a tapered ridge 132 which is joined to the fin 128 of the guide 120. The transition is completed by gradually widening the narrow walls 116, 118 of the rectangular guide 110 to the width of the parallel walls 122, 124 of the guide 120 and at the same time by opening the top wall of the guide 120 by means of a V-shaped slot 134. The transition may be designed (Figs. 14, 15, not shown) so that the narrowing of the broad walls and the broadening of the narrow walls of the rectangular guide occur together and not in sequence.
Patent GB-777011-A (GB)
Title: Separator for the removal of particles of magnetic material from finely divided non-magnetic material
IPC: B03C1/03
Filed: 1955-07-26
Abstract: 777,011. Magnetic separators. ALLENWEST S.A. (PROPRIETARY), Ltd. July 26, 1955 [Aug. 6, 1954], No. 21615/55. Class 117 A magnetic separator particularly suitable for the removal of magnetic particles from sludge or slime but which may be used for dry material comprises a non- magnetic rotatable drum 5 carrying spikes 8, which are magnetizable by a bi-polar electromagnet 2 having pole-pieces 3, 4. The spikes are disposed in a series of helices and sweep through the material to be treated which passes along an inclined launder 1 positioned above the electromagnet assembly, the magnetic particles adhering to the spikes being discharged into a hopper or shoot (not shown), as the spikes become de-energized on moving out of the launder. There is preferably a greater clearance between the launder and the spikes at the input end 9 than at the outlet end 10, coarser material thus being extracted before the finer particles. A modification, Fig. 5, includes a core 5, which may be of laminated construction, fixed to the shaft 6 on which the drum revolves. A coil carrying an alternating current for producing an alternating flux which is superimposed on the steady flux may assist in freeing the magnetic particles from the spikes. Additional spikes of shorter lengths may be provided on the drum and the material in the launder may be agitated by alternating magnetic fields or by vibrating the launder particularly when dry material is to be treated. For the separation of various magnetic materials of different magnetic susceptibility the main magnetic field may be graded; alternatively, there may be provided a number of separators in series with suitably adjusted fields. Permanent magnets are also specified for the main fields, and the spikes may be mounted on an endless belt or on a disc.
Patent GB-747953-A (GB)
Title: Improvements in pneumatic tyre and method of making same
IPC: B60C1/00
Filed: 1954-07-27
Abstract: A tubeless tyre comprising a carcase of cord fabric coated with natural rubber or butadiene-styrene copolymer, has a liner composed of a blend of (A) from 45 to 75 per cent by weight of a reaction product of (1) from 0.1 to 4.0 parts of sulphur and/or ultra-accelerators of sulphur vulcanization, and (2) 100 parts of butyl rubber, and (B) from 55 to 25 per cent of either natural rubber or butadiene-styrene copolymer.  The blend is preferably prepared by first mixing the butyl rubber with 25 to 75 parts of carbon black, adding 0.5 to 1.5 part of sulphur, and/or ultra-accelerators such as tetra-alkylthiuram mono- or di-sulphide, e.g. tetramethylthiuram disulphide, the zinc, tellurium or selenium dialkyl dithiocarbamates, dibenzyldithiocarbamate, or N-pentamethylene dithiocarbamate, and then masticating the mix.  The reacted butyl rubber, still unvulcanized, is then mixed with natural rubber or butadiene-styrene copolymer which has already been mixed with additional carbon black, the usual compounding agents such as hydrocarbon oil, zinc oxide, stearic acid, benzothiazyl disulphide, tetramethylthiuram monosulphide and sulphur being added at this stage.ALSO:A tubeless tyre comprising a carcase of cord fabric coated with natural or GR-S (butadiene-styrene copolymer) rubber, has a liner composed of a blend of A) from 45 to 75 per cent by weight of a reaction product of 1) from 0.1 to 4.0 parts of sulphur and/or ultra-accelerators of sulphur vulcanization and 2) 100 parts of butyl rubber, and B) from 55 to 25 per cent of either natural or GR-S rubber.  The blend is preferably prepared by first mixing the butyl rubber with 25 to 75 parts of carbon black, adding 0.5 to 1.5 part of sulphur, and/or ultra-accelerators of sulphur such as the tetraalkylthiuram mono- or disulphides, tetramethylthiuram disulphide, the zinc, tellurium or selenium dialkyl dithiocarbamates, dibenzyl dithiocarbamate, or N-pentamethylene dithiocarbamate, and then masticating the mix for a time ranging from 3 minutes at 400 DEG F. to 60 minutes at 300 DEG F., preferably for 10 to 30 minutes at 350 to 375 DEG F.  The thus reacted butyl, which is stated to be still in an unvulcanized state, is then mixed with natural or GR-S rubber which has already been mixed with additional carbon black, the usual compounding agents such as hydrocarbon oil, zinc oxide, stearic acid, benzothiazyl disulphide, tetramethylthiuram monosulphide and sulphur, being added at this stage.
Patent GB-1344917-A (GB)
Title: Production of superalloys
IPC: C22C1/04
Filed: 1971-04-19
Abstract: 1344917 Alloys: sintered superalloys LATROBE STEEL CO 19 April 1971 [16 Feb 1970 (3)] 21898/71 Headings C7A C7D and C7X A readily workable, heat resistant alloy suitable for service as a thermal member for extended periods of time under conditions of high stress and elevated temperatures is produced as follows: A prealloyed powder which has been rapidly quenched to solidify molten particles with a dendrite arm spacing of less than about 0À003" is prepared from a molten alloy consisting of 0-0À45%C., 5-24%G, 0À5-10% Mo. 0-6%Al, 0-5%Ti, 0-6%W, 0-6%Nb, 0-6%Ta 0-0À025%B, the balance being a mixture of at least two of Fe, Co, Ni and impurities such that the alloy contains at least 21%Co or at least 15%Fe or at least 25%Ni. The -80 mesh powder is compressed and mechanically hot worked on a Mo lined "INCONEL" (TRADE MARK) can at 2050‹F. to produce an alloy product having a density substantially equal to that of the cast alloy. Hot working is effected by forging, melting, extruding or isostatic compacting.
Patent GB-137358-A (GB)
Title: Improvements in motor omnibuses and like passenger vehicles
IPC: B62D47/02
Filed: 1918-12-31
Abstract: 137,358. Shire, L. G. W., and Birming- ham & Midland Motor Omnibus Co. Dec. 31, 1918. Omnibuses.-In an omnibus or other passenger vehicle having the normal entrance and exit disposed at the forward end of the vehicle on the near side and leading to a central gangway d between the seats c<2> by a platform space e and a passage d<1> between the seats c, c<1>, an emergency exit door k is provided at the rear of the vehicle. Steps f give access to the platform. The driver's seat is placed at g and the petrol tank at h. The driver's and platform spaces form a compartment substantially enclosed, except for the entranceway, there being a weather-screen and a partlyclosed side i. Fares may be taken by the driver or by a conductor stationed on the platform. A removable seat c<3> normally extends across the emergency exit door k, and a seat-back, which may be hooked to the door or may have depending arms adapted to drop into recesses in the two adjacent fixed seats, is arranged to conceal the handle of the bolts for the door.
Patent GB-290477-A (GB)
Title: Improvements in the manufacture of artificial limbs and the like
IPC: A61F2/60
Filed: 1927-08-19
Abstract: 290,477. Loth, J. Aug. 19, 1927. Addition to 276,954. Limbs, artificial.-In the process for manufacturing artificial limbs described in the parent Specification, the shell c into which the " liquid wood " covered cast a is inserted is provided with apertures d and another coating e of " liquid wood " is applied to the cast, the cast and the shell being .pressed together so that the second layer of '" liquid wood " is forced into the apertures in the shell. The space between the outer shell and the cast is filled with resinous material f. The cast is then broken away and the inner surface of the first liquid wood " layer is trimmed up and painted.
Patent GB-586865-A (GB)
Title: Improvements in or relating to narrow-ware looms
IPC: D03D35/00
Filed: 1945-11-07
Abstract: 586,865. Narrow ware looms and shuttles. MATTERSON, W. Nov. 7, 1945, No. 21930/44. [Class 142 (ii)] A narrow ware shuttles S has a wedge shaped body which occupies the major portion of the 'space at the back of the shed within the thickness of the batten B and is hollowed out to accommodate a quill Q. The weft t passes through a small hole in a lug 18a, round a milled roller 13 which is loaded by a spring 15, through an eye 19, through an eye 10 which is loaded by a tension spring 11, and through an eye 5a. The eyes 5a, 10 are carried by an arm 5 which can be swung to the chain-dotted position about its spring loaded pivot 6, after lifting it over pegs 9.
Patent GB-620413-A (GB)
Title: Preparation of salts of streptothricin
IPC: C07H15/238
Filed: 1946-07-23
Abstract: complex salts of streptothricin acid salts and alkaline-earth metal halides are manufactured by reacting a streptothricin acid salt with an alkaline-earth metal halide in a solvent medium in which the reactants and product are freely soluble, and separating the complex salt by diminishing its solubility and crystallizing it out.  The details of procedure are similar to those for preparing the corresponding streptomycin compounds according to Specification 620,415.  In examples: (1) streptothricin helianthate is treated with excess of calcium chloride in methanol, the precipitate of calcium helianthate is filtered off, the filtrate is concentrated under reduced pressure and the streptothricin hydrochloride-calcium chloride complex is crystallized therefrom; (2) the same compound is prepared by treating streptothricin hydrochloride with calcium chloride in methanol.  Additional starting materials specified are streptothricin hydrobromide and hydriodide, calcium bromide and strontium chloride.
Patent GB-1460867-A (GB)
Title: Method of producing pile or plush fabrics on circular knitting machines by means of plush hooks
IPC: D04B9/12
Filed: 1974-05-17
Abstract: 1460867 Knitting machines; knitted fabrics BURLINGTON AG 17 May 1974 [23 May 1973] 22096/74 Headings D1C and D1K A circular knitting machine is equipped to knit plush fabrics by the provision of needles 6 in a dial 9 and plush hooks 7 controlled by a cam in a cylinder 8, the hooks 7 being initially raised to prevent the previously knitted fabric from moving with the needles (path 2) as the latter are advanced, hooks not required to form plush loops being then lowered (path 3) while the selected hooks are fully raised (path 1) and fed with plush yarn 5 and are then lowered to trap the plush yarn in their hook portions as the needles 6 are retracted and to form plush loops which they hold in their fully lowered position until the needles complete the stitch formation with a base yarn 4, the plush yarn 25 forming stitches or tuck loops, whereupon needles are slightly advanced to relieve the tension in the stitches and allow the stiches to be drawn clear of the dial. In alternative embodiments (Figs. 4, 5 and 6, 7, not shown, respectively) only every second needle 6 is advanced initially to receive plush yarn, such needles being subsequently retracted while the other needles are simultaneously advanced to the tuck position, or alternatively the other needles being subsequently advanced to the knitting position, and the base yarn is then fed into all the needles to form alternating stitches and tuck stitches or a course of plain stitches, respectively. In the embodiment of Fig. 9 all the hooks 7 form plush loops and every needle is advanced and fed with plush yarn 5, alternate needles being subsequently retracted and fed with a first base yarn 41 and the intervening needles being finally retracted and fed with a second base yarn 42 which forms floats. The plush fabric may be used for carpets and upholstering cloth as well as for garments.
Patent GB-316017-A (GB)
Title: Improvements in or relating to the making of roads, paths, and the like
IPC: C08K3/06
Filed: 1928-07-31
Abstract: 316,017. Hines, J. T. July 31, 1928. Macadamized roads. - A road-making or like composition comprises stone or other mineral aggregate bonded with a mixture of commercial bitumen, Trinidad bitumen, or epure, containing clay in a colloidal state and a fluxing oil containing sulphur in combination or free. A fine mineral filler may also be added. The sulphur, which serves to harden the bitumen, is preferably dispersed in a colloidal state in the oil and by varying the amount of sulphur the hardness can be controlled. Three methods of making the composition are (1) spraying the clean dry aggregate with the fluxing oil and then incorporating the bitumen mixture and the mineral filler; (2) mixing the fluxing oil, bitumen, and epure, and applying the mixture to the aggregate; (3) applying the bitumen mixture to the aggregate and the fluxing oil to the mineral filler, and then mixing the two compositions. The oil is preferably applied at a temperature of 110-185‹ F. and the bitumen mixture at a temperature of 240-320‹ F. The mineral filler is preferably stone of the same quality as the aggregate, but cement, limestone dust, or slate dust mav be added. Suitable proportions of the oils and bitumens are from 5 to 10 per cent of fluxing oil containing 2-10 per cent of sulphur, from 40 to 60 per cent of commercial bitumen of 200 penetration, and from 40 to 60 per cent of Trinidad epure having a high content of colloidal clay. In surfacing a road, the composition is spread to a thickness of one and a half times the thickness of the finished layer and is then consolidated with a heavy roller. The' surface is then covered with clean # inch chippings at the rate of about one ton to 135 sq. yards, and the chippings are rolled to give a non- skid surface. On paths and carriage ways, screened gravel' can be used to give a finished surface having the appearance of ordinary gravel.
Patent GB-797931-A (GB)
Title: Improvements in or relating to gaseous pressure operated pumps for liquids
IPC: F04B9/137
Filed: 1956-07-17
Abstract: 797,931. Engine valve gear. ABBEY, A. (Aktiebolaget Svenska Kullagerfabriken). July 17, 1956, No. 22124/56. Class 122 (2). [Also in Group XXVIII] A gaseous pressure-operated pump has mechanically independent differential pistons 11, 12, 13, 14, the pistons 12, 14 being subjected to gaseous pressure under the control of a valve 19 to cause the pistons 11, 13 to draw liquid from a reservoir 2 and to deliver it to an outlet 8. The differential pistons are returned by a plurality of pistons 32, 33 subjected to the air pressure, the arrangement being such that one piston must complete its return stroke before the working piston can supply the necessary air impulse to cause the valve 19 to change over. The valve 19 is provided at each end with a piston, the smaller, 25, of which is subjected to constant air pressure and the larger, 26, is selectively connected to air pressure or to atmosphere under the control of the pistons 32, 33. When the pistons 13, 14, 33 are in their raised position, air pressure is connected from a pipe 46 through the cylinder 42 through a groove 47 to a duct 40. When the piston 11, 12 completes its working stroke the duct 40 is connected via a groove 40a in the piston 32 to a pipe 35 which is connected to the cylinder in which the piston 26 works so that the piston 26 is subjected to air pressure to change over the valve 19. When the piston 11, 12 is in its raised position, the pipes 35, 40 are connected by a groove 23 in the piston 32 and when the piston 13, 14 completes its pressure stroke the pipe 40 is connected by an upper groove in the piston 33 to the chamber 37 which is connected to atmosphere, so that the piston 26 is subjected to atmospheric pressure and the valve 19 is changed over under the action of air pressure acting on the piston 25. In the intermediate position of the valve 19 during change-over, both pistons 12, 14 are subjected to air pressure. Specification 764,219 is referred to.
Patent GB-959702-A (GB)
Title: Improvements in or relating to gate-valves for the control of fluids
Inventor: COGEZ PAUL
IPC: F16K3/30
Filed: 1961-06-20
Abstract: 959,702. Valves. COMMISSARIAT A L'ENERGIE ATOMIQUE. June 20, 1961 [June 29, 1960], No. 22279/61. Heading F2V. A gate valve has guide means 12, 14 for guiding the valve plate 1 in a first plane parallel to its own plane and in a second plane transversely of the first and actuating means comprising an axially-displaceable screw-threaded nut 11 for controlling the successive displacements of the plate 1. In the preferred embodiment, two nuts 11 have recesses containing balls 16 in engagement with grooves 15 in rods 7 connected by a gear train 9 with a common operating spindle provided with a stuffing-box 19 having seal rings 24 and a gasket 25. Each nut has a pair of inclined slots 13 to receive the ends of rods 3 secured to the valve plate 1 so that the rods first traverse vertical slots 12 in guides 4 until the lower rods meet the bottom of the slots. Further downward movement of the nuts causes the slots 13 to force the rods ' into horizontal extensions 14 of the slot 12 and the valve plate, which has a sealing ring 2, into engagement with its seat.
Patent GB-1101392-A (GB)
Title: A device for biaxially stretching a web of material
IPC: D06C3/02
Filed: 1965-05-26
Abstract: 1,101,392. Biaxial stretching apparatus. G. BRœCKNER [trading as BRœCKNERTROCKNERBAU CO.]. 26 May, 1965 [13 Nov., 1964], No. 22286/65. Heading B5B. [Also in Division D1] A device for biaxially stretching a web 1, Fig. 1, (not shown), of material by two chains 2, 3 holding the web edges and each comprising linked rods 8, 9, Fig. 3, pivotally coupled together at 10 in pairs, one rod 8 of each pair being extended at 8a beyond the pivot point 10 and provided with a guide member 13 lying against a guide surface 15 whilst the other ends of the rods 8, 9 are provided with guide members 11 lying against a second guide surface 14, Figs. 1 and 2 (both not shown), is characterized in that in frictional contact with each linked rod chain 2, 3 there is at least one feeding means 18 moving in the same direction 17 as the chain. The guide members 11 are provided with web holding devices 16, Fig. 4 (not shown). In one embodiment, Fig. 3, the feeding means 18 comprises an endless chain passing over reversal wheels 19, 20 at least one of which is driven and the run 18a of which chain forms the guide surface 14. The guide surface 15 may comprise a fixed rail, as shown, or a driven endless belt. Preferably, the angle between the chain 18 and the surface 15 is adjustable. Separate feed chains 18, 21, 22 driven by a common drive may be provided for each zone of movement of the linked rod chain. Feeding means are provided for the inner span 3a, Fig. 1 (not shown), and the returning span 3b of the chain 3. The guide members 11, 13 are preferably formed as rollers, Fig. 4 (not shown), and the rollers 11 lie against a covering 23 of the span 18a of the chain 18 formed as a roller chain with its inner side running against a fixed guide rail 24. In a second embodiment, Figs. 5 and 6 (both not shown), the feeding means 30 is provided in addition to adjustable guide rails 14, 15 and comprises a chain circulating in a plane normal to that of the linked rod chain. The chain 30 comprises members 31, 32 running along a fixed rail 34 and which have a friction layer 33 thereon and engages a projection 26 at the lower end of a bearing pin 25 for the roller 11. The chain 30 is driven at a higher speed than the chain 3.