baber/WOPTO huggingface dataset:
Patent GB-1303531-A (GB)
Inventor: ERHARD ALBERT EDWARD
IPC: C01G33/00
Filed: 1970-02-06
Abstract: 1303531 Niobium recovery MOLYBDENUM CORP OF AMERICA 6 Feb 1970 [17 Dec 1969] 5687/70 Heading C1A Niobium values are recovered from niobium concentrates by heating the concentrate with excess alkali metal hydroxide to form a niobium/ alkali metal complex; leaching the product in at least 2 separate stages, the first to solubilize impurities and to separate them, and the second and subsequent stages to solubilize the niobium values and form a stock solution thereof; and recovering the niobium values from the stock solution. The heating may be carried out at above 4000 C., e.g. 550-750‹ C. for at least ¢ hour using 0À5-3À0 lb. alkali per lb. Nb 2 O 5 , the mixture having pH not less than 7.0. Recovery may be effected by cooling to precipitate niobium values. Precipitation may be aided by adding alkali (to pH at least 12À0) or mineral acid (to pH 7À0 or less), and the precipitate may be leached with mineral acid (e.g. 15% HCl or HNO 3 ) to remove occluded impurities. The product may be calcined at 350- 1000‹ C. to recover substantially pure niobium oxide. In examples, the first aqueous leach is carried out at ambient temperature and the leached solids are washed with an amount of water small enough not to dissolve niobium values. Subsequent leachings are effected at higher temperature (e.g. 75-96‹ C.) for a longer time.
Patent GB-491317-A (GB)
Title: Improvements in or relating to the coating and/or impregnating of paper and like materials
IPC: D21H19/34
Filed: 1937-02-25
Abstract: A composition for coating and impregnating paper and other felted or woven fibrous materials contains a mixed ether of cellulose containing an alkyl substituent having less than three carbon atoms per alkyl group and another alkyl substituent containing from 8 to 18 carbon atoms per alkyl group.  The mixed ether may contain from 0,5 to 2 higher alkyl groups and from 0,5 to 2 lower alkyl groups for each unit of cellulose. Suitable higher alkyl groups are those corresponding to the mixture of alcohols obtained by catalytic hydrogenation of coconut oil fatty acids, known under the Registered Trade Mark "Lorol."  The manufacture of suitable mixed ethers of cellulose is described in Specification 486,969.  The mixed ethers may be incorporated as sizing agents for paper, for example, in the paper beater.  The compositions may be applied to the paper as lacquers in organic solvents, as emulsions in water, or as hot melts. They may also be applied in the form of previously cast sheets by the application of heat and pressure.  In examples: (1) glassine paper is coated with a solution of "Lorol" ethyl cellulose; (2) vegetable parchment paper is coated with a solution of "Lorol" ethyl cellulose; (3) cast sheets consisting of "Lorol" ethyl cellulose and camphor are applied to greaseproof paper; (4) glassine paper, and (5) greaseproof paper are coated with a composition containing "Lorol" ethyl cellulose and paraffin; (6) glassine paper, and (7) greaseproof paper, are coated with a composition containing "Lorol" ethyl cellulose and monoabietyl phthalate; (8) glassine paper, and (9) greaseproof paper are coated with a composition containing "Lorol" ethyl cellulose and rosin; (10) glassine paper, and (11) greaseproof paper are coated with a composition containing "Lorol" ethyl cellulose and camphor; (12) glassine paper, and (13) greaseproof paper are coated with a composition containing "Lorol" ethyl cellulose, damar, asiatic wax and ethyl acetate; (14) glassine paper is coated with a composition containing "Lorol" ethyl cellulose and a polyether resin, e.g. made by reacting a dinuclear phenol and an aliphatic dihalide as described in Specification 433,452.  Other suitable cellulose ethers are octyl ethyl cellulose, palmityl ethyl cellulose, stearyl ethyl cellulose and oleyl ethyl cellulose.  A further example (15) describes the manufacture of suitable cellulose ethers, including "Lorol" ethyl cellulose, "Lorol" octyl ethyl cellulose, a cellulose ether containing the ethyl group and groups derived from the alcohols obtained by the reduction of acids derived from sperm oil ("stenol"), and "Lorol" methyl cellulose.
Patent GB-202665-A (GB)
Title: Improvements in or appertaining to machines for stretching or expanding fabrics
IPC: D06C3/06
Filed: 1922-11-27
Abstract: 202,665. Westnott, E. S. Nov. 27, 1922. Feeding webs.-Relates to fabric expanders of the kind comprising revolving fluted bars, such as 2, which are caused to reciprocate while revolving by the engagement of studs 6 on the bars with stationary inclined cams 8, and consists in the improvementof various details of the apparatus. (1) Renewable wearing brackets 3, Fig. 7, are provided between the bars 2 and their supporting segments 4. These brackets are secured to the bars and have guide projections sliding between the segments. The bars are retained by plates 3<a> and nuts. (2) The end brackets 12, Figs. 2 and 4, are constructed of substantially L-shaped form and with curved slots 12<a> to allow of angular adjustment of the sleeves carrying the cams 8, and to facilitate the mounting of the usual screwed rod 10 provided for adjusting the cams about their pivots 9<a>. A set screw 9<c> is provided for fixing the sleeve 9 in its adjusted position. The L-shaped form of the brackets permits the expander to be placed close to the machine in which the fabric is being treated. (3) The boxes 7, Figs. 2 and 5, which carry the studs 6 and slide in the cams and which are provided, as already known, with a detachable side 7<a>, are constructed with end lugs or plates 7<b> on the side. 7<a> so that the fixing screws 7<c> for the side 7<a> do not contact with the cam surfaces, thereby reducing friction. A removable section 8<a> of the side of the cam permits removal and displace. ment of any bar 2 independently of the others. (4) The cams are constructed with a portion 13, Fig. 9, set at a greater inclination than the remainder to give the fabric an increased expansion. as it is about to leave the apparatus.
Patent GB-941009-A (GB)
Title: Dyes containing hydrazino groups
Inventor: TARTTER ARNOLD
IPC: C09B69/00
Filed: 1962-02-15
Abstract: In examples, (6), N-b -(11-acetylaminonaphthalene - 51- sulphonylamino) ethyl - N1 - isopropylidene-hydrazine is made by reacting 1-acetylamino naphthalene - 5 - sulphonic acid chloride with N-b -aminoethyl-N1- isopropyl-idene-hydrazine; (9), N-b -aminoethyl-N-phenyl-hydrazine is made by reacting phenylhydrazine with chloroethylamine hydrochloride, neutralising and fractioning the product; and (10) N-b -aminoethyl-N1-isopropylidene-hydrazine is made by reacting acetone with b -aminoethyl hydrazine.ALSO:The invention comprises dyes of the azo, anthraquinone and tetrazaporphin series containing at least one group of the formula <FORM:0941009/C3/1> where R is hydrogen, substituted or unsubstituted alkyl, cycloalkyl, aryl or aralkyl, A is alkylene with two to six carbon atoms in the alkylene chain and X is a hydrazino group containing at least one free hydrogen atom.  The dyes are made by reacting a sulphonic acid halide of a dye or of a dye precursor of the aminobenzene sulphonic acid or aminonaphthalene sulphonic acid series with an amine of the formula: R-NH-A-X, in which the hydrazine group may be protected by an acyl or alkylidene group, in a solvent or diluent at about 0 DEG to 90 DEG C., or by reacting a sulphonic acid alkylene imide or a mineral acid ester of a sulphonic acid hydroxy-alkylamide of a dye or a dye precursor of the aminobenzene, sulphonic acid or aminonaphthalene sulphonic acid series with a hydrazine having at least two free hydrogen atoms and, when a precursor is used, reacting the product with a dyestuff sulphonic acid halide or coupling it with a diazotized amine.  Examples are given.  The dyes may be converted into the corresponding methylol or methylol ether derivatives.  They dye natural or regenerated textile materials.
Patent GB-626096-A (GB)
Title: Improvements relating to vehicle steering mechanisms
IPC: B62D3/04
Filed: 1947-02-28
Abstract: 626,096. Cam steering mechanism. BURMAN & SONS, Ltd., and BRIGGS, W. H. Feb. 28, 1947, No. 5811. [Class (iii)] In vehicle steering mechanism of the kind in which a lever on a shaft 4 linked to the steerable road wheels engages a helical groove in a cylindrical member 1 rotatable by the driver, the said lever comprises a part 6 which is slidable in part 5 and has means 16 engaging the helical groove, the means 16 being guided for rectilinear movement relative to the member 1. As shown the means 16 comprises a ball 16 and the lever part 6 which has a projection 12 carrying a roller 13 movable in a straight guide slot 14 in the part 15 of the gear housing 3. An adjustable abutment 17 maintains the ball 16 in engagement with the grooved member 1. In a modification the ball is replaced by a peg supported on a ball race in the part 6.
Patent GB-104079-A (GB)
Title: Improvements in Collapsible or Folding Chairs, Tables, Stools and the like.
Inventor: COLLIER ARCHIE
IPC: A47C4/14
Filed: 1916-04-20
Abstract: 104,079. Collier, A. April 20, 1916. Folding seats. - A folding chair, table, stool, &c. comprises a seat or top 4 to which are pivoted at 5 supports 1, 2, and at 6 rear members 3. Links 7 connect the supports 2 to the members 3, and links 10 connect the pivot point of the links 7 and members 3 to the supports 1. The framework is collapsed by folding forward the back members 3, and is secured in the erected position by the engagement of the members 3 with a bar 12 connecting the supports 1. To adapt the arrangement for use as a stool or table, the upper parts of the back members are dispensed with.
Patent GB-763365-A (GB)
Title: Improvements in buck rakes
IPC: A01D87/08
Filed: 1954-03-01
Abstract: 763,365. Buck rake attachments for tractors. DICKIE & SONS, Ltd., W., DICKIE, T., and LEE, F. Feb. 28, 1955 [March 1, 1954], No. 5882/54. Class 78 (3). A buck rake comprises a frame 14, 15 pivoted to the tractor draught links 18, 19 at 17, 30; and a fork so mounted in the frame that, when a latch 20 is released, it can pivot about the axis of a tube 10 to which are secured the tines 11 and back frame 13. Further pivot holes 30a are provided in lugs 16 secured to frame 14, 15 to permit adjustment of the slope of the tines.
Patent GB-131055-A (GB)
Title: Improvements in or relating to Telephone Installations particularly for Wireless Telegraphy.
Inventor: BRILLOUIN LEON NICOLAS
IPC: H03F1/36
Filed: 1918-04-05
Abstract: 131,055. Brillouin, L. N. Oct. 8, 1917, [Convention date]. Wireless telegraphy.-In telephone receiving- apparatus, particularly for wireless telegraphy, of the kind described in Specification 127,014, the grid of the first valve is connected through a variable capacity to the plate of another valve; and a resistance and inductance are placed between the plate of the last valve and the telephone receiver, the telephone receiver being shunted by a capacity. The arrangement shown in Fig. 1 is substantially the same as that shown in Fig. 1 of the above-mentioned Specification, with the addition of a capacity connexion l<1> between the grid a<100> of the first valve a' and the plate a<3000> of the third valve a<3>. The capacity l<1> may be varied at will, and may be connected to any one of the plates. As the capacity is increased, an increased amplification is first produced, and subsequently oscillations of increasing strength are produced. For dealing with short waves, the plate of the third valve a<3> is connected to the condenser l<1>, and, with increasing wave-lengths, the connexion is made to the valves in the following order: second, fifth, seventh, fourth, sixth, eighth. The resistance h<3> and the capacity f<3> connected to the grid of the selected valve are increased in value until maximum amplification is obtained without " howling." In the arrangement shown in Fig. 2 for the purpose of reducing adjustments and avoiding variations of the connexions of the condenser l<1>, this condenser is connected to the plate a<4000> of the last valve a<4>, and the receiving-instrument g, or the primary of a transformer supplying that instrument, is shunted by a condenser g', and a resistance g<2> and inductance g<3> are placed between the receiver g and the plate a<4000>. In arranging the valves and their connexions, reactive capacity coupling other than that of the condenser l<1> is avoided. With this object, the valves are arranged in line, and the resistances and capacities are grouped near the valves so as to reduce the length of the connecting-wires.
Patent GB-102014-A (GB)
Title: Method of and Apparatus for Making Projectile Bands, and the like.
IPC: B21K1/76
Filed: 1916-04-25
Abstract: 102,014. Bridgeport Brass Co., (Assignees of Limont, A. W.). Nov. 5, 1915, [Convention date]. Hoops and rings.-Bands for projectiles &c. are drawn from washer blanks and pressed to the required size in apparatus comprising a die 11 in which the washer blank 10 rests, a sizing sleeve 15 slidable within the die, a punch 16, the diameter of which is equal to the inner diameter of the finished band, and a sizing sleeve 17 similar to the sleeve 15. The inner and outer diameters of the sleeves are equal to the inner and outer diameters of the finished band. The punch in descending draws the washer into band form in the die and lowers the two sleeves so that the band is finally enclosed between the die, punch, and two sleeves, and pressed to shape. In a modification, the drawing is done in an apparatus comprising a punch and die, as described above, and the pressing in a. separate apparatus comprising a die, two movable sleeves, and a mandrel.
Patent GB-652297-A (GB)
Title: Improvements in or relating to electric pulse shortening circuit
IPC: H03K5/06
Filed: 1948-02-27
Abstract: 652,297. Changing waveform. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948, No. 5935. Convention date, Jan. 13, 1944. [Class 38 (ii)] An electric pulse-shortening circuit comprises a transformer having primary and secondary windings, the primary winding being connected to a source of pulses, a delay line and a substantially pure resistor forming a closed series circuit with the secondary winding and an output circuit connected between the centre of the secondary winding and the junction point between the delay line and resistor. The pulses induced in the secondary windings 14, 15 are arranged in opposition and are applied to two circuits in one of which there is a known type of delay line 18 to delay the pulse, while the other circuit includes a pure resistor 20 which merely functions to determine the pulse amplitude. The inverted pulse from the winding 14 and the delayed pulse from the winding 15 are combined at the junction 21 to produce a series of shortened pulses which are applied to the output circuit 23. Rectifier means may be used to eliminate the negative pulses in a known manner. The ohmic resistance of the delay line 18 is preferably equal to that of the resistor 20 so that the delayed pulse is of the same amplitude as the inverted pulse. An impedance 22 is preferably connected between the output and earth, its impedance being substantially equal to the characteristic impedance of the delay line and the impedance of the output circuit is preferably matched against the characteristic of the pulse-shortening system.
Patent GB-525511-A (GB)
Title: Improvements in or relating to seam pressing or like machines
IPC: A43D43/06
Filed: 1939-02-23
Abstract: 525,511. Taping machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., and MAWBEY, L. Feb. 23, 1939, No. 5984. [Class 73] [Also in Group VII] In machines of the kind described in Specification 422,560, [Group VII], the work support is mounted so that it can be swung forwardly, away from the tools, to facilitate work-changing and the work guiding members are capable of independent yield away from the work. The work-supporting roll 16 is mounted on a slide 54 urged upwardly by a spring 56 and depressed by a chain 66 connected to a treadle. This assembly is mounted in a post 50 pivoted at 52 and retained in operative position by a latch 83. The strength of the spring 50 is adjustable by a hand-nut 76, actuating a bell-crank lever 70 supporting the lower end of the spring. The work-guides 142, instead of being geared together as described in the prior Specification are formed as independent levers engaged by a plate 170 backed by a spring. In a modification, the chain 66 is connected to a lever carrying a pivot 210 for an adjusting handle 212 engaging a bar 216 supported by a strong spring at one end and a weak spring at the other, so that the resistance to the depression of the work support increases as the handle is moved away from the weaker towards the stronger spring.
Patent GB-355647-A (GB)
Title: Improvements in or relating to bed sheets
IPC: D03D1/00
Filed: 1930-02-24
Abstract: 355,647. Bed sheets. TAENI (nÚe KLAUSNER), E., 125, Neustiffgasse, Vienna. Feb. 24, 1930, No. 6065. Convention date, Jan. 9. Drawings to Specification. Grant of Patent opposed. [Class 142 (iv).] Bed sheets have a reinforced portion containing threads of not greater thickness but of higher tensile strength or having better wearing properties than the threads of the non-reinforced portion. The reinforcing threads may have a greater degree of twist than that of the other threads. The reinforced portion may also be woven more closely than and contain material different from that in the other portions. The reinforcing threads may be warps in the central portion of the sheet, other reinforcing weft threads arranged in the middle portion also being provided in some cases. The fabric may be woven as sheeting, the reinforced portions being woven at intervals. The Specification as open to inspection under Sect. 91 (3) (a) describes also the use of diagonallywoven strengthening threads, and sheets in which a medallion is woven into the centre of the sheet, or in which a separately-woven piece is secured to the central portion of the sheet in the manner of a quilt. This subject-matter does not appear in the Specification as accepted.
Patent GB-664196-A (GB)
Title: Improvements in means for the protection of trees and plants against frost
IPC: A01G13/06
Filed: 1949-03-07
Abstract: 664,196. Treating growing plants. PEARCH, L. C. March 6, 1950 [March 7, 1949], No. 6107/49. Class 6(ii) [Also in Groups XXVIII and XXIX] A machine for spraying liquid insecticides in orchards or other planted areas of the kind described in Specification 623,068. [Group XXIX], in which the liquid is entrained in air discharged by a fan, has combined therewith at the fan intake a conduit for the air which is vertically extensible to draw down the warmer air above the plants and deliver it near the ground level to protect the plants against frost. In the form shown, an extensible canvas conduit 69 is carried by a trailer hitched to the rear of the spraying vehicle (not shown). The trailer frame 61, 64, 65, Fig. 2, has hinged thereto at 66 a support base 67 for the conduit 69 and the canvas bend 78 with extension 79 for attachment to the fan inlet of the spraying vehicle. For transport, the base 67 is folded to the dotted-line position by a handle 70 through a crank 71 and link 73 which serve, in the operative position shown, to support the base 67. The conduit, Fig. 3, comprises canvas 75 arranged between rings 69 connected by levers 76 shown in three positions corresponding respectively to total collapse, partial extension and full extension. In the last position, the levers serve to lock the rings against collapse. When the frost-protection apparatus is in use, the supply of liquid to the sprayer is cut off. The air may be heated, if desired, by the waste heat from the engine driving the fan. Specification 561,059 also is referred to.
Patent GB-248767-A (GB)
Title: Manufacture of coloured dressings for leather
IPC: C09D101/18
Filed: 1926-03-05
Abstract: 248,767. I. G. Farbenindustrie Akt.- Ges., (Assignees of Farbwerke vorm. Meister, Lucius, & Briining). March 6, 1925, [Convention date]. Varnishes; incorporating paint ingredients. - Dressings for leather are made by intimately grinding organic or inorganic pigments with a substance of high viscosity, and incorporating the product into a celluloid or nitrocellulose varnish. The viscous materials may comprise oils or a mixture of a substance capable of gelatinizing cellulose esters and a similar non-gelatinizing substance. In an example a pigment-dye such as Pigment-Red, or that sold under the Trademark Hausa Yellow, is ground in a mixture of linseed oil, castor oil, and a gelatinizing agent such as tricresyl phosphate, and the whole incorporated with a varnish comprising nitrocellulose or celluloid, butanol, methyl, ethyl and butyl acetates and camphor or its substitutes.
Patent GB-809680-A (GB)
Title: Improvements in and relating to electrical systems for sorting messages
IPC: H04Q3/00
Filed: 1956-03-01
Abstract: 809,680. Sorting digital data. STANDARD TELEPHONES & CABLES Ltd. (Laboratoire Centrale de Telecommunications S.A.). March 1, 1956, No. 6415/56. Class 106 (1). In an electrical system for sorting recorded messages each including an identification destination-determining portion, the messages are read sequentially and the identification portion of a message is stored in a temporary store co-operating with identification equipment so as to select a corresponding individual recording device to which is routed via the temporary store part of the message to be rerecorded. In the system described, groups of characters, relating, e.g. to telephone calls, are read from a magnetic tape by a device L, Fig. 1, and each group is routed via T, in accordance with the value of an identification character, to one of ten recording devices E1 . . . En ... Eo. The characters may be recorded on 5 parallel tracks on the tape in a 5-unit combination code, and read in succession by heads TL1-TL5, Fig. 5, which supply impulses via amplifiers to bistable double triode flip-flops F1-F5 forming a temporary store for the characters. An impulse from any head is applied also via decoupling rectifiers and an amplifier to a delay line LR having output taps which provide timing impulses R1-R5 the last of which resets all the flip-flops. Each group begins with a distinctive preparatory character which enables a flip-flop F6 (not shown) to be operated whereby when the following identification character (one of the digits 0-9) is set up on F1-F5, one of ten electronic gates such as G12 (for digit 2), Fig. 7c, passes impulse R1 to a corresponding flip-flop F12 which causes an associated tape-recording device to be selected. The subsequent settings of F1-F5 are passed by further gates (Fig. 9, not shown), to the 5 recording heads of the selected device, the selected flip-flop such as F12 remaining set until a signal G1 is obtained in response to the preparatory character of the following group. Since the identification digits used for selection are not re-recorded, if the tapes from the ten recording devices are introduced into the reading device L, a further sorting may be effected in accordance with a subsequent identification digit in each group. A 4-stage sorting process is described involving 4-digit identification numbers, e.g. calling subscriber numbers for a telephone accounting system. Reference is made to ferro-electric as well as magnetic recording and to drums as well as tapes.