baber/WOPTO huggingface dataset:
Patent GB-871214-A (GB)
Title: Purification of the antibiotic kanamycin
IPC: C07D/
Filed: 1959-06-08
Abstract: The antibiotic kanamycin is purified by passing an aqueous solution of kanamycin having a pH of 9.0 to 12.0 through a column of a highly porous strongly basic anion exchange resin in the hydroxyl form, collecting the effluent and isolating kanamycin therefrom.  It is preferred that the column has a height of at least twice its diameter and contains at least one millilitre of wet resin per 100 ml. of the aqueous solution of kanamycin.  The temperature is less than 140 DEG F.  The resin is an insoluble, cross-linked capolymer of an aromatic monovinyl hydrocarbon and an aromatic divinyl hydrocarbon, the copolymer containing on the aromatic nuclei substituent groups having the general formula:  <FORM:0871214/IV (b)/1> in which n is from 1 to 4 R1, R2 and R3 are monovalent hydrocarbon groups and Y is an anion, the number of the substituent groups being at least one for every 15 aromatic nuclei in the copolymer.  Examples are Amberlites IRA-401, IRA-401S and IRA-411.  (The word "Amberlite" is a Registered Trade Mark). The resin column is renovated by treatment with 1% aqueous sodium chloride.  The kanamycin may be recovered from the effluent by adding H2SO4 to pH 10.5, extracting with n-butanol containing benzaldehyde, separating the butanol extract, treating with aqueous H2SO4 of pH 2.0, separating the aqueous phase, treating with carbon, filtering and precipitating the kanamycin by adding NH4OH to pH 8.2 and then methanol.  Specification 817,385 is referred to.
Patent GB-398318-A (GB)
Title: Improvements in weather resisting building materials
IPC: B32B15/01
Filed: 1932-07-11
Abstract: 398,318. Making compound sheets. GROOVE, E., 17, B³dericherstrasse, Neusson-Rhine, Germany. July 11, 1932, No. 19627. Convention date, July 11, 1931. [Class 83 (ii).] Weatherproof building-elements, such as roofing-sheets, waste-pipes, gutters, and the like, are made by rolling a lead coating on to at least one side of a non-perforated zinc sheet. The elements may be obtained by rolling from zinc ingots on which a lead layer has been applied, and such elements may be bent opposite the rolling direction and provided with corrugations. Elements having a lead coating on one side only may be provided with a varnish covering on the opposite side.
Patent GB-260670-A (GB)
Title: Improvements in or relating to inductance coils for use in wireless apparatus
IPC: H01F27/00
Filed: 1925-08-04
Abstract: 260,670. Igranic Electric Co., Ltd., and Curtis, A. H. Aug, 4, 1925. Plug couplings.-Terminal connections or an inductance coil of low sell-capacity comprise cylindrical blocks f<1> adapted to receive plugs g in tapped holes f<4>, f<5> at right-angles to each other, the terminal box being slotted along its base and edges for this purpose. U-shaped clips straddle the chamfered edges b<3> of the terminal box. Specification 261,122 is referred to.
Patent GB-1379824-A (GB)
Title: Rotary plug valve
IPC: G03B23/00
Filed: 1972-04-22
Abstract: 1379824 Valves RADIATION Ltd 29 May 1973 [27 April 1972] 19699/72 Heading F2V In a rotary plug valve, a plug member 5 and an operating spindle 6 are held in a casing 1 by a righting pin 7 which is fixed to the spindle and co-operates with an axial slot 10 in the plug member and a circumferential slot 8 in the casing. The slot 8 communicates with an axially extending space 11 so that the spindle can be withdrawn from the casing. Movement of the righting pin into the space is blocked by a member 21 which can be moved against a spring 22 to allow the pin into the space. The blocking member may also be a screw with a semicircular head portion which blocks the pin in one position but allows the pin into the space upon rotation through 180 degrees from the one position. The end of the blocking member is peened so that it cannot be removed from the casing.
Patent GB-784009-A (GB)
Title: Improvements in evacuated vessels of the "dewar" type
Inventor: KUGLER SIMON
IPC: A47J41/02
Filed: 1955-07-07
Abstract: 784,009. Vacuum-jacketed vessels. BRITISH OXYGEN CO., Ltd. July 5,1956 [July 7, 1955], No. 19716/55. Class 64(2) The wall of a sealing-off tube 10 of a vacuum - jacketed vessel has a thinned portion, Fig. 1 (not shown), or an annular notch 14. This is to release excess pressure by breaking of the weakened portion in the event of the fracture of the inner wall of the vessel with subsequent contact of a liquified gas, contained in the vessel on the warmer outer wall 12. The vessel and tube may be of glass or metal. To protect against mechanical damage a cover 15 is screwthreaded on to a boss on the wall 12 and to protect against damage when the tube 10 is crimped, a ring, Fig. 4 (not shown), is placed in the tube between the weakened portion and seal-off tip. The Provisional Specification describes also a sealing-off tube made of lead, copper or nickel and one having a thinned wall by virtue of an increase in bore diameter.
Patent GB-1089649-A (GB)
Title: Device for tapping liquid metal
IPC: F27D3/15
Filed: 1966-05-05
Abstract: 1,089,649. Tapping molten, metals. STALLAVAL APPARAT A.B. May 5, 1966 [May 6, 1965], No. 19850/66. Readings F4B.  A ladle 1 lined with refractory material 2 has a replaceable nozzle brick 3 the nozzle having an upper convergent portion longer than a lower divergent portion, pouring being controlled by a refractory rotary valve 5 with a taphole 7, said valve engaging a part-circular recess 6 in the nozzle brick. The valve 5 is attached to a holder 8 supported by stub axles (9, 10) in bearings (11, 12) and is rotated manually or by a motor. Springs (14, 15) connected to brackets on the stub axles press valve 5 into contact with recess 6.
Patent GB-1427804-A (GB)
Title: Microtome
IPC: G01N1/06
Filed: 1973-04-26
Abstract: 1427804 Microtomes IVAN SORVALL Inc 26 April 1973 [8 Sept 1972] 19985/73 Heading G2J A microtome having a fixed knife (not shown) has a specimen support 49 mounted on a pivotable cantilever arm 51, the arm 51 being movable to effect cutting and return strokes of the support 49, advancing means pivotally mounted on the microtome base 31 being arranged to produce an incremental advance towards the knife prior to each cutting stroke, and retracting means being pivotally mounted on said advancing means and supporting the pivot of the arm 51 so as to retract the support 49 away from the knife during the return stroke, a lever mechanism 108, 127 serving to lock the support 49 against retraction during the cutting stroke. The arm 51 pivots on a block 93 by means of a knife bearing 98 engaging a V-shaped seat 96, springs 102 urging the support 49 into its uppermost position. The block 93 has a second V-shaped seat 94 which co-operates with a knife bearing 92 on a block 89. An arm 302 attached to the block 89 is rotated in a counterclockwise direction as shown in Fig. 3, and so pivots the block 89 about a further knife bearing which co-operates with a fixed V-shaped seat 88. This rotation of the block 89 on each cycle of operation of the microtome is sufficient to produce the required incremental forward movement of the support prior to the cutting stroke. Retraction of the support 49 during the return stroke is effected by clockwise rotation of block 93 under the action of a spririg 114. The support 49 is locked in the forward position during the cutting stroke by means of a lever 27 having a toe 131, the lever preventing the block 93 from rotating under the action of spring 114 by pushing against a lever 108 attached to the block 93. Operation of the mechanism is effected by rotation of a main shaft 67.
Patent GB-1268507-A (GB)
Title: Improvements in or relating to rolling bearings, to sealing rings for rolling bearings and to a method of making a rolling bearing
Inventor: HALLERBACK STIG LENNART
IPC: F16C33/78
Filed: 1969-04-18
Abstract: 1,268,507. Delivering rings. SVENSKA KULLAGERFABRIKEN A.B. 18 April, 1969, No. 20012/69. Heading B8S. [Also in Division F2] A resilient ring 7 for retaining a sealing ring of a bearing is inserted in a groove 4 in a bearing race 1 using a mandrel 8. A sleeve is threaded on to the mandrel and cut to form a pack of resilient rings. The mandrel has an internal chamber 9 in which fluid can be pressurized, and has a fluid orifice 10 at a distance from the end of the mandrel equal to the unstrained axial thickness of a ring, the orifice being in communication with the chamber 9. The pack of rings is arranged with one end flush with the end of the mandrel so that on compression of the fluid in the chamber, the ring is blown off into the groove. The pack of rings is then moved along the mandrel so that the end ring is again flush with the end of the mandrel ready for the next ring to be inserted.
Patent GB-858175-A (GB)
Title: Machine tool
IPC: B23Q11/08
Filed: 1959-06-11
Abstract: 858,175. Electrolytic grinding. HAMMOND MACHINERY BUILDERS Inc June 11, 1959 [June 11, 1958], No 20101/59 Class 41 [Also in Group XXIII] A grinding machine having a work-table for feeding the work towards the wheel 7 is provided with a fixed collecting pan 28 for the coolant or electrolyte used in the grinding operation, the base of the pan being slotted to form an opening for the table support 26 and the edges of this opening being upturned or having baffles 33 fitting, with working clearance, within the downturned edges of the cover 34 secured to the support 26. As shown, the machine has two work-tables 24, 24a each mounted on a separate carrier 17 on a support 26, and the pan 28 has two openings in its base for co-operating with the cover 34 of the two supports. A flexible surround may extend between each cover 34 and the base of the pan 28 to effect a liquid-tight seal. The tables may each be set at an angle related to the face of the wheel 7 by moving a yoke 22 which is engaged by a nut 23 operated by a handwheel 21 and screwed shaft 19. Each support 26 is carried by a base 12 which is moved for the feed movements by a power cylinder 13. The grinding wheelshaft 4 extends through a protected shield 41 the top of which has a hood 39; the wheel and shaft may oscillate. Cutting oil or electrolyte is discharged from nozzles 20 against the wheel at a point adjacent the work and is re-circulated after collection from the pan 28 by conventional means.
Patent GB-204024-A (GB)
Title: Improvements in motor vehicles
IPC: B62D25/00
Filed: 1923-08-07
Abstract: 204,024. Budd Manufacturing Co., E. G., (Assignees of Ledwinka, J.). Sept. 18, 1922, [Convention date]. Mud-guards.-In motor-vehicles, the mudguards 20, 21 are connected to the chassis and cowl and tonneau panels 14, 16 respectively.
Patent GB-212500-A (GB)
Title: Improvements relating to the treatment of liquid hydrocarbons and more especially cracked spirit
IPC: C10G50/00
Filed: 1923-05-22
Abstract: In the purification of cracked spirit, petroleum, &c. by filtration through bauxite, fullers earth, floridin, activated charcoal, or other porous contact substance maintained at say 100-300 DEG  C., the liquid is passed through the filter upwards. Filtration through cold bauxite &c. may follow to effect desulphurization.
Patent GB-627378-A (GB)
Title: Urea formaldehyde cashew nut shell liquid reaction products
IPC: C09F5/06
Filed: 1947-07-28
Abstract: A heat-convertible composition comprises a mixture of an organic solvent soluble urea-formaldehyde condensate with cashew nut shell liquid, or polymers derivatives or distillates therefrom, or condensates of such products with aldehydes, e.g. formaldehyde, or furfuraldehyde.  The urea-formaldehyde condensation products may be employed in solution, e.g. in an alcohol having four to fourteen carbon atoms in the molecule.  The urea-formaldehyde condensation product may be formed by heating the ingredients in the presence of the cashew nut shell or similar liquid.  In the examples: (1) urea-formaldehyde resin and the amyl ether of cashew nut shell liquid are dissolved in amyl alcohol; (2) as in (1) but the solution also includes mineral spirits; (3) cashew nut shell liquid is heated with hexamethylene-tetramine and the product mixed with a solution of urea-formaldehyde resin in octyl alcohol and petroleum spirit or in butanol and sylene; (4) gilsonite, amyl ether of cashew nut shell liquid, urea-formaldehyde resin, octyl alcohol and solvent naphtha are dissolved together.  The products may be used as coating or impregnating compositions.  They may be set by baking at 225-320 DEG F.  Fabrics coated with the composition are useful for electrical insulations or for diaphragms for pumps for fuel oil.  Paper coated with the products may be used as liners for covers of containers for food, cosmetics or paint.  U.S.A. Specifications 1,633,337, 1,672,848, 2,067,919 and U.S.A. re-issue Specifications 19463 and 20383 are referred to.
Patent GB-299527-A (GB)
Title: Improvements in furnaces
IPC: F23H3/02
Filed: 1927-08-02
Abstract: 299,527. Eley, C. V. A. Aug. 2, 1927. Firebars and grates. - In furnace grates of the kind wherein the firebars are supported on air supplying troughs having doors at the bottom for the removal of ash &c., the doors 4 closing the bottoms of the troughs 1 are inverted V-shape in cross section to facilitate the discharge of ash and are hinged at the rear. The doors are pressed against their seatings 3 by springs 7 mounted on a frame 8, 9, 10 pivoted at the rear and raised and lowered by a handle 13. When it is desired to clear the troughs, a block 14 upon which the extension 12 of the frame rests normally is moved away and the frame lowered to permit the doors to open. In a modification the springs 7 rest on transverse bars which are raised and lowered by eccentrics mounted on longitudinal shafts.
Patent GB-136239-A (GB)
Title: Improvements relating to the Hinges of the Lens Bezels of Motor Car Lamps.
IPC: B60Q1/04
Filed: 1918-12-07
Abstract: 136,239. Butlers, Ltd., and Reeves, A. Dec. 7, 1918. Lantern doors and door fittings.-A hinge is applied to the hinged parts of a lamp body so that it is concealed within the lamp. The hinge comprises a flat c, g, Fig. 4, which is cranked or bowed to accommodate one of the edges at the joint when the hinge is open, and is pivoted on a pin f located, as shown in Fig. 5. inwardly from the joint of the two members a, d, shown as the lens bezel ring and the body of the motorcar lamp. The member d is slotted for the passage of the flap c, g, which is attached to the member a by a flange h and rivets i, the pivot f being secured by a plate c and rivets j to the member d. A stabilizing-linkage k, l, Fig. 4, may be providel. The cranked member may be double-jointed.
Patent GB-188061-A (GB)
Title: Improvements in or relating to pressure fluid operated hammers for use in pile extracting and similar operations
IPC: E02D9/02
Filed: 1921-07-29
Abstract: 188,061. Hiley, A. July 29, 1921. Combined fluid-actuated and mechanical gears. - In a pressure-fluid operated hammer for pile-extracting and like operations, the valve controlling the admission and exhaust of the pressure fluid is moved to the inlet position by mechanical means comprising a pivoted member projecting through the cylinder wall and operated by the ram of the hammer on its downward or idle stroke, and the valve is moved to the exhaust position by pressure fluid admitted through a port uncovered by the ram near the end of its upward or power stroke. An arm D, pivoted to a block D<2> capable of adjustment parallel to the axis of the ram A', projects through an opening in the wall of the cylinder B, and lies in the path of a shoulder on the ram, and pivoted to the arm is a rod d, the lower end of which operates the stem c of the piston valve C with a certain amount of lost motion, a buffer pad d<1> being preferably interposed. A spring d<2> normally holds the rod d out of contact with the valve stem c. At the end of the upward or power stroke, the ram uncovers a passage c<2> through which pressure-fluid is admitted under the piston C' of the valve C, which is thus moved upwards to exhaust fluid from the cylinder B through the ports C<3>, C<4>. The ram A<1> then rebounds and falls by gravity, and the fluid under the piston C' exhausts through the passage c<2> now uncovered, while the valve C remains in the exhaust position owing to friction. When the shoulder of the ram A' strikes the arm D, the valve C is moved downwards, and the port C<3> is put into communication with the pressure port C<5>, admitting fluid to the cylinder B under the ram which is thus driven upwards. The adjustable block D<2> enables the point of admission to be varied to give a cushioning effect.
Patent GB-1180284-A (GB)
Title: Switching Circuit
IPC: H03K19/08
Filed: 1967-05-03
Abstract: 1,180,284. Transistor switching circuits. R.C.A. CORPORATION. 3 May, 1967 [19 Aug., 1966], No. 20451/67. Heading H3T. In a switching circuit having two transistors Q3, Q4 connected as a differential amplifier 10, an input circuit 11 includes at least one transistor Q1, Q2 operable in response to an input binary signal 17 to produce a signal V b3  which has a voltage swing equal to the difference between the first and second levels V H  and V L  of the input binary signal and further operable with gain G to produce an inversion of the input binary signal, the signal V b3  is connected directly to one input of the differential amplifier 10 and the amplified and inverted signal V ref  is connected to the other input of the amplifier 10. As shown with one or more of the inputs A, B at the high input level V H  transistors Q3 and Q4 are biased ON and OFF respectively to give outputs C C at low and high levels. If two or more of the inputs A, B are at the low input level V L  then the amplified and inverted output from the collector 2c of Q2 turns transistors Q3 and Q4 OFF and ON giving high and low level outputs at C and #C. The circuit may operate as a NOR, OR, NAND or AND gate and may be formed as an integrated circuit. Several such circuits may be interconnected. Temperature and supply voltage variations are compensated by a transistor Q6 which may be replaced by a diode. The circuit may be biased so that the transistors are prevented from saturating and the average current in the R2 and R6 circuits can be arranged to be equal. Additional series-connected diodes may be connected in the R2, Q6 circuit to increase the range of the gain G. The outputs 14, 15 may feed emitter follower transistors. In addition to the level shift provided by transistor Q5 a PN junction, such as a diode or transistor, may be connected between 5e and V ref .
Patent GB-1346245-A (GB)
Title: Method of manufacturing flexible sheet material
IPC: D04H1/645
Filed: 1971-04-19
Abstract: 1346245 Nonwoven fabrics STATNI VYZKUMNY USTAV KOZEDELNY 19 April 1971 [17 June 1970] 20508/71 Heading D1R [Also in Division C3]  The invention comprises a method of manufacturing flexible sheet material, e.g. artificial leather, which comprises impregnating a textile sheet with an aqueous mixture comprising a butadiene-acrylonitrile copolymer, an aqueous dispersion of a urea-formaldehyde resin and either (a) an aqueous solution of a watersoluble polymer of 1,1- or 1,2-disubstituted or 1,1,2-trisubstituted derivative of ethylene of the general formula where at least one of X and Y is a CO 2 H group or a Na, K, NH 4  or quaternary ammonium salt thereof and Z and the remaining X or Y group if any is/are selected from H, -CH 3 , -C 6 H 5 , -CN, -CONH 2 , and -COOR groups, where R is C 1 -C 4  alkyl, or (b) an aqueous solution of a copolymer of a compound of the above general formula with an ethylenically unsaturated compound, the amount of the water soluble polymer or copolymer being not greater than the total amount of the butadiene-acrylonitrile copolymer and urea-formaldehyde resin in the mixture. The mixture may also include polypropylene or polyisobutylene having a molecular weight in the range from 300-2000. The textile sheet is impregnated with the mixture and dried. Suitable textile sheets are mats of collagen and polypropylene fibres.
Patent GB-644052-A (GB)
Title: Improvements relating to light signals
IPC: F21V9/08
Filed: 1947-07-30
Abstract: 644,052. Signal lamps. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. July 30, 1947, No. 20659. Convention date, May 18, 1945. [Class 75(iv)] In a light signal emitting a substantially parallel beam and comprising a light unit A and a lens unit C with coincident focus a colour filter adjacent the common focus is of such a shape and is so positioned that any external light rays entering the signal through the lens unit will, if reflected only once by the colour filter, be reflected away from the signal beam. A hollow conical colour filter 20 is positioned near the common focus with its axis along the axis of the signal and the surfaces of the cone are so inclined that external rays entering the signal in a direction substantially parallel to the emitted beam will not strike the cone at right angles so as to be returned along their incident paths. Three such conical filters may be mounted on a rotatable arm 16 so that any one of the filters can be interposed in the light beam. The light unit A comprises an elliptical reflector 12 with one focus coincident with the focus of the lens unit, and the other coincident with the filament of an electric lamp 10. The lens unit C comprises a doublet formed by two plano-convex lenses.
Patent GB-377421-A (GB)
Title: Improvements in locomotive stokers
IPC: F23K3/04
Filed: 1931-07-20
Abstract: 377,421. Mechanical stokers. STANDARD STOKER CO., Inc., 350, Madison Avenue, New York, U.S.A. July 20, 1931, No. 20685. Convention date, Sept. 15, 1930. [Class 51 (i).] In a locomotive stoker of the kind in which the fuel is fed from the tender by a screw conveyer through a horizontal transfer conduit and riser conduit flexibly attached to a rigid tubular member communicating with the firebox, the transfer and riser conduits 17, 19 are formed as a unitary structure movably mounted on rollers 24 and flexibly connected at 29 to a tubular conduit 26 leading to the firing opening 12. The fuel is fed through the conduits by an articulated conveyer screw 21, 22 and delivered on to a distributer plate 35 from which it is scattered by fluid jets delivered by openings 37 in a conduit 36. The flexible connection 29 may be arranged above the platform 13 instead of beneath it, as shown.
Patent GB-767325-A (GB)
Title: Improvements in or relating to hydraulic pump systems
IPC: F04B9/117
Filed: 1954-07-15
Abstract: 767,325. Reciprocating pumps. AKTIEBOLAGET IMO-INDUSTRI. July 15, 1954 [July 15, 1953], No. 20704/54. Class 102(1) [Also in Group XXIX] Liquid supplied by one pump to a piston and cylinder device is continuously delivered from the device at a uniform rate of flow and pressure, the pistons of the device being operated, in one direction, by liquid supplied by a separate pump. A pump 69 supplies liquid to two cylinders 20 alternately via a pipe 61 and a reversing valve 56 to move pistons 30, 31. Each piston has a cylinder 44 therein engaged by a stationary piston 29. Each cylinder 44 is supplied with liquid from another pump 70 via a pipe 75, one of two valves 35 and pipes 42, 43, and dis. charges through one of two valves 36 and a pipe 41. Each of the pistons 30, 31 moves an auxiliary valve 45 at the inward end of its stroke whereby liquid from the pump 70, entering the valve via a pipe 40, is diverted from one passage 59 leading to the main reversing valve 56 to another passage 59 leading to the opposite end of the valve and thereby reversing the valve. When the valve is reversed, the supply from the pump 69 is diverted from one cylinder 20 to the other cylinder. The valve 45 can be moved by hand by a lever 89 when starting the device. In a second embodiment, Fig. 7, suitable for corrosive or impure liquids, the pistons 30, 31 are reversed by collars 100 engaging arms 99 attached to the valve 45. The corrosive or impure liquid is drawn into cylinders 96 via an inlet 97 and is discharged through an outlet 98.