baber/WOPTO huggingface dataset:
Patent GB-750184-A (GB)
Title: Process for the separation of isophthalate and terephthalate diesters
IPC: C07C69/82
Filed: 1953-10-06
Abstract: In a process for separating an isomeric mixture of the methyl, ethyl, propyl or isopropyl diesters of iso- and terephthalic acid the mixture is contacted with a solvent in which the isophthalate is more soluble than the terephthalate, the isophthalate/terephthalate solubility ratio in said solvent being higher than the corresponding weight ratio in said mixture, and said solvent being added in an amount sufficient to dissolve substantially all the isophthalate and part of the terephthalate and the remainder of the terephthalate which is undissolved is withdrawn from said mixture in a substantially pure state.  In a dual solvent extraction the mixture is first contacted with a first solvent in which the isophthalate is more soluble than the terephthalate, the isophthalate/terephthalate solubility ratio in said first solvent being higher than the corresponding weight ratio in said mixture, and said first solvent being added in an amount sufficient to dissolve substantially all the isophthalate and part of the terephthalate, the undissolved remainder of the terephthalate being withdrawn in a substantially pure state from said mixture and said first solvent being thereupon withdrawn from the residual mixture, and said residual mixture is contacted with a second solvent, the isophthalate being again more soluble than the terephthalate in said second solvent, the isophthalate/terephthalate solubility ratio in said second solvent being higher than the corresponding weight ratio in said residual mixture but lower than the isophthalate/terephthalate solubility ratio in said first solvent, and said second solvent being added in an amount sufficient to dissolve substantially all the terephthalate and part of the isophthalate, the undissolved remainder of the isophthalate being withdrawn in a substantially pure state from the residual mixture.  In a continuous process, after the removal of the undissolved isophthalate from the residual mixture, said second solvent is withdrawn and the remaining portion of the isomeric mixture is recycled either alone or with fresh stock for further successive dual solvent extraction.  Solvents specified include benzene, acetone, isopropanol, carbon tetrachloride, ethyl alcohol, ethyl acetate, methyl alcohol, methyl acetate, acetic anhydride, toluene, xylene, dimethyl orthophthalate and isopentane and the ratios between the solubilities of dimethyl isophthalate and dimethyl terephthalate in such solvents are stated.  In an example a mixture of dimethyl iso- and terephthalates is treated with benzene in slight excess of the amount required to dissolve all the dimethyl isophthalate present and the mixture is cooled and filtered to obtain a residue of dimethyl terephthalate.  The filtrate is evaporated to remove benzene and the residue is treated with ethyl alcohol in slight excess of the amount necessary to dissolve the dimethyl terephthalate present and the residue of dimethyl isophthalate is filtered off.
Patent GB-750140-A (GB)
Title: Improvements in pen nibs
IPC: B43K1/04
Filed: 1952-11-01
Abstract: 750,140. Pen nibs. THOMSON, H. A. Nov. 2, 1953 [Nov. 1, 1952], No. 27546/52. Class 146(3) A reversible pen nib of the kind tipped with iridium or other hard wearing material, has on one side of its extremity a transverse linear or curvilinear writing- surface F for writing broad lines and on the other side a projection with a rounded writing surface O for fine lines, a common slit E extending through the nib at both surfaces. The surface O is formed by a hemispherical iridium tip welded to a ridge D on the nib and ground smooth. Alternatively, the tip may be two preformed sections secured to a previously slit nib. In a further modification, Figs. 5 and 6, not shown the nib tip has an arcuate ridge of iridium, the transverse and longitudinal curvatures of which are computed to give the required fineness of line.
Patent GB-444703-A (GB)
Title: Magnet steels containing nickel, aluminium and cobalt
IPC: C22C38/10
Filed: 1934-09-25
Abstract: Steel alloys for magnets contain 5,1-20 per cent of aluminium, 8,1-29,5 per cent of nickel, and 0,01 less than 0,5 per cent of cobalt, with or without 0,01-0,5 per cent of one or more of the metals manganese, tungsten, molybdenum, vanadium, and copper, and with or without up to 1,5 per cent of carbon.
Patent GB-659064-A (GB)
Title: Improvements in stockings and the manufacture thereof
IPC: D04B9/46
Filed: 1947-10-15
Abstract: 659,064. Knitting. QUORTEX, Ltd., and CHAPMAN, J. H. Oct. 15, 1947, No. 27600. [Class 74 (ii)] A ladies' knitted stocking has, at the location of the calf portion, a substantially diamond-shaped area ABCD, in which the wales are substantially parallel to the centre line E. The area is produced, during narrowing, by the narrowing points which, starting on a small group of needles at each selvedge, transfer loops two needles inwardly every six courses, but are at first racked in an additional distance of two needles between narrowing, to produce the lines BA, BC, and are thereafter, instead, given an outward racking of one needle, between narrowing, to produce the lines AD, CD.
Patent GB-841199-A (GB)
Title: Improvements in regenerative electromechanical actuator drive circuits
IPC: H01H47/22
Filed: 1956-09-10
Abstract: 841,199. Magnetic amplifiers. SPERRY RAND CORPORATION. Sept. 10, 1956 [Sept. 26, 1955], No. 27633/56. Class 40 (9). [Also in Group XL (c)] In a circuit for operating an electromechanical device such as a relay 10, a signal 14 is applied to an amplifier 13 energized from a source of variable potential V, to produce a flux in the magnetic core 10, a coupling circuit 12 being provided to apply feed-back to the amplifier. The amplifier 13 may include thermionic discharge tubes of the high vacuum or gas type, transistors (see Group XL (c)), or a magnetic amplifier and a further feed-back may be effected over resistor R 1 . While the flux is building up in core 10 a voltage is generated in coil 12 and is effective to increase the drive applied to the amplifier 13. As soon as a steady state has been reached the feed-back decreases so that the holding current of the relay is less than the initial actuating current. The relay may be held operated over an auxiliary contact. To prevent a negative-going signal being fed back to the amplifier 13 due to the fall in flux from the actuating to holding valve, a diode may be included in the feed-back path, Fig. 2 (not shown). When the circuit is operated without a diode in the feed-back path the decrease in flux may be such as to generate a sufficiently large voltage in coil 12 for the amplifier to provide insufficient current to keep the relay 10 operated so that it releases and the cycle subsequently commences again. In a modification, Fig. 4, the input signal is applied at terminal 50 to windings 44, 45 on magnetic cores 40, 41, energized from an A.C. supply over diodes D 3 , D 4 . The output from windings 42, 43 is applied to a winding 48 on a device such as a relay having a magnetic core 49. A feed-back voltage is generated across coil 51 and applied over a diode to the input circuit. As an alternative arrangement a further winding may be added to each of the cores 40, 41 to which the voltage from the feed-back winding 51 is applied.
Patent GB-363702-A (GB)
Title: Piston compressor
IPC: F04B39/00
Filed: 1930-09-16
Abstract: 363,702. Lubricating pistons. LINDE. QUIST, S., 20, Nachodstrasse, Berlin. Sept. 16, 1930, No. 27634. Convention date, Sept. 16, 1929. [Class 12 (ii).] A compresser piston is of light metal, and a connecting member 10 is cast in it, with ribs 12 engaging the body, and with a sleeve 14 over which the piston-rod end is guided. The rod is secured by a T ring 17 screwed on the rod and a flanged ring 16 screwed into the sleeve. The rod is hollow and supplies oil through a radial pipe 18 to the piston surface. Specification 360,509, [Group XXVII], is referred to.
Patent GB-936846-A (GB)
Title: Improvements in or relating to retractable steps for use on caravans or the like
IPC: B60R3/02
Filed: 1961-07-31
Abstract: 936,846. Vehicle steps. C. H. MATTHEWS. Sept. 28, 1961 [July 31, 1961], No. 27639/61. Class 108(1). A vehicle step 6 has two sides 7 pivotally mounted on the frame 4 by pairs of 3 links 8, 9, so that it may be moved from the position shown to a stowed position during which the links rotate through 180 degrees.
Patent GB-468773-A (GB)
Title: Improvement in or relating to chewing gum preparations and methods for preparing thesame
IPC: A61K9/68
Filed: 1935-10-07
Abstract: Oligodynamic silver is added to chewing-gum.  For example, it may be added in powdered form, or a textile material (cotton, gauze or the like) is impregnated with finely divided silver and added to the chewing-gum.  The impregnation may be effected by precipitating the silver, by a reducing-agent, from a solution of silver nitrate.  The gum and textile material is then thoroughly kneaded into a homogeneous mass before sub-division.  Loose impregnated cotton, silver gauze, or a silver impregnated strap may be added to the gum. Alternatively, chewing - gum is wrapped in silver foil which is chewed with the gum.
Patent GB-187140-A (GB)
Title: Improvements in or connected with churns
IPC: A01J15/22
Filed: 1921-10-18
Abstract: 187,140. Llewellin, G. H. Oct, 18, 1921. Lids. - Relates to an improvement in or modification of the lid-attaching means described in Specification 117,355. The strap member crossing the lid is formed with a slotted cylindrical socket b in which fits, detachably, a flattened hinge pin d mounted on a bifurcated fitting e adjustably secured to the churn by bolts passing through elongated slots f. The fitting may be serrated to engage corresponding serrations on the churn to prevent relative movement after adjustment. To prevent wear and shock a rubber or similar buffer may be placed at the lower part of the bifurcation on the fitting e.
Patent GB-413903-A (GB)
Title: Improvements relating to serving trays or carriers for ice-cream cones
IPC: A47G23/06
Filed: 1933-10-07
Abstract: 413,903. Serving-tray for ice-cream cones. MAZZOCCHI, P. J., 6, Waterloo Square, Bognor Regis, Sussex. Oct. 7, 1933, No. 27685. [Class 128.] A serving-tray or carrier for ice-cream cones consists of a flat sheet of cardboard or similar material 1 provided with a number of holes 3 of circular or other shape in which the cones are supported. Radial or marginal grooves, flanges, or beads, may be embossed on the tray to render it more rigid. The tray is provided with a recess 2, where it is held by the finger and thumb, and a corresponding convex part 6, and the holes are so disposed around the edge of the tray, that when loaded it is supported near its centre of gravity.
Patent GB-171274-A (GB)
Title: Improvements in the driving of spinning spindles
IPC: D01H1/243
Filed: 1920-09-29
Abstract: 171,274. Leslie, J. C. Sept. 29, 1920. Spindle rails; spindle-driving apparatus; stop - apparatus, non- automatic. - Spinning- spindles, of the kind which terminate a short distance -below the neck rail without being supported in a footstep, are driven by discs 7 splined on a shaft 5 and normally pressed against a disc 4 on the spindle. The spindle rail is of box-form. An axle 16, projecting through the front plate, carries a rectangular plate 18 by which, when the axle is turned by a handle 17, the disc 7 may be slid along the shaft to stop the spindle. The shaft 5 may be formed in sections so that a limited number of spindles are thrown out of gear when repairs are required. A shaft running the whole length of a row of frames may be arranged to drive the disc-shaft of each frame through friction-gearing. Specification 20331/09 is referrd to.
Patent GB-1386330-A (GB)
Title: Fluorescent dyes
IPC: C09K11/06
Filed: 1972-06-14
Abstract: 1386330 Fluorescent dyes BADISCHE ANILIN- & SODA-FABRIK AG 14 June 1972 [15 June 1971] 27793/72 Heading C4P The invention comprises fluorescent dyes of the general formula wherein R is H, C 1 -C 4  alkyl optionally substituted by C 1 -C 4  alkoxy, Cl, Br, COOH, carbalkoxy having up to 4 carbon atoms in the alkoxy group, carbamoyl or acetoxy, or is a cyclohexyl, benzyl or phenylethyl group, R<SP>1</SP> is H or C 1 -C 4  alkyl which may be substituted by C 1 -C 4  alkoxy, Cl, Br, COOH, carbalkoxy having up to 4 carbon atoms in 'the alkoxy group, carbamoyl or acetoxy or R and R<SP>1</SP> together with the N atom denote a 5- or 6-membered heterooyclic ring, X is -O-, -S-, or -CH=CH-, and Y is H; Cl, Br, CN, NO 2 , carbalkoxy having a total of 2 to 9 carbon atoms, or carbamoyl or sulphamoyl which groups may be mono- or di-substituted and contain up to nine carbon atoms. They are prepared by reacting an optionally N-mono- or N,N-di-substituted 4-aminosalicylaldehyde with a compound of the general formula wherein X and Y are as above, preferably in a solvent at 0-150 C. in presence of an inorganic or organic basic condensing agent. The dyes give yellow shades on polyacrylonitrile, polyester and di- and tri-acetate fibres and melamine formaldehyde resins.
Patent GB-380620-A (GB)
Title: Improvements in, or relating to, apparatus for playing spelling games
IPC: A63F3/04
Filed: 1931-10-08
Abstract: 380,620. Spelling games. KANTOR, S. and BRITISH EDUCATIONAL TOYS, Ltd., Abbey House, Victoria Street, London. Oct. 8, 1931, No. 27978. [Class 146 (ii).] Apparatus for playing spelling games comprises a board and pieces having inter-related data. The board carries the letters of the alphabet, with each of which is associated a numeral, and the pieces C<1>, Fig. 2, carry pictures of different objects and the name of the object spelt out in the numerals corresponding to the letters of the name. When the piece is placed on the central space provided on the board, Fig. 1, arrows on the board lead the eye to the correct letters, and the name of the object may be written down in a space a<1> provided. A pencil b<1> and sponge d<1> may be attached to the board.
Patent GB-229633-A (GB)
Title: Improvements in or relating to the production of three-phase alternating high frequency current from normal homopolar high frequency generators
IPC: H02K47/18
Filed: 1924-11-24
Abstract: 229,633. Lorenz Akt.-Ges., C., (Assignees of Schmidt, K.). Feb. 23, 1924, [Convention date]. Drawings to Specification. Oscillation generators.-Three-phase currents of high frequency are produced from a normal single-phase homopolar generator by positioning the two stator halves so that the voltages produced are at an angle of 90‹ to one another, and leading out these voltages to a transformer having connections of the Scott type. The three-phase voltage may be increased by the use of star-connected static transformers.
Patent GB-808643-A (GB)
Title: Improvements in or relating to automatic control systems for electric alternators
IPC: H02P9/08
Filed: 1956-09-14
Abstract: 808,643. Starting prime movers; selfcontained supply systems. ELECTRICAL REMOTE CONTROL CO. Ltd., and CHUCHLA, J. Sept. 14, 1956, No. 28111/56. Class 38 (4). In a circuit for an A.C. generating plant wherein connection of a load causes a prime mover to be started, and a generator to be connected to the line, the circuit is operated by only two relays. Battery terminals T3, T9 are connected to load terminals T2, T4 through one relay coil R, the latter closing a contact R1, opening a magnetic fuel valve through a terminal T6 and operating a starter motor through a terminal T7. The generator is connected to terminals T1, T3 and on sufficient voltage being generated, a second relay C operates, opening contacts . C2, C3, then closing C1, connecting the generator to the load. Relay coil R is held during the transition by a capacitor LVC. The p.d. across a saturable choke CH due to load current holds relay R until the load is disconnected, contact R1 then shutting off the fuel supply. As the generator voltage drops, relay C releases, thus restoring the circuit to its initial state. A manually reset thermal cut-out winding TH connected in parallel with the starter motor causes this to be disconnected through a contact TH1 should the engine not fire within a given time.
Patent GB-1471472-A (GB)
Title: Yarn winding apparatus
IPC: B65H54/34
Filed: 1974-06-25
Abstract: 1471472 Yarn reserve SOC CIVILE TEXTILE [trading as SOCITEX] 25 June 1974 [25 June 1973 28 Feb 1974] 28163/74 Heading D1J An apparatus, Fig. 4, for forming a yarn reserve 18 on a bobbin support 15 having end flanges 16 provided with peripheral teeth (not shown), and of the kind in which the bobbin support is brought into frictional contact with a drive drum comprises:- (a) a member (not shown) for raising the fully wound bobbin off the drive drum 1; (b) operation of the member (a) serving to swing a yarn guide 9 from the setting shown in Fig. 1 to the setting shown in Fig. 2 to cause the yarn 14 to be deflected to one side of the drum 1; (c) a locking member 13 that rises to hold the yarn guide 9 in the setting shown in Fig. 2 whilst a fresh bobbin is brought into frictional engagement with the drum 1; (d) an inclined surface 2 rotating about an axis 3 perpendicular to the axis 4 about which the yarn guide 9 swings; and (e) a pawl 10 on the yarn guide 9 such that when a new bobbin is in position, and the locking member 13 has been retracted to permit the yarn guide 9 to commence to swing back to the setting shown in Fig. 1, the yarn is first snagged in a notch of an end flange of the new bobbin and the pawl 10 then temporarily engages the rotating inclined surface 2 to slow up the motion of the yarn guide 9 and so permit a yarn reserve 18, Fig. 4, to be wound. In Figs. 1, 2 and 4 the inclined surface 2 is one of a plurality of inclined surfaces formed in a rotating flat wheel. A spring 11 allows the pawl 10 to rock up and over the wheel as the yarn guide 9 moves from right to left in the drawings. In Figs. 5 and 6 (not shown) the wheel is inclined to its axis 3 in the manner of a swash plate, there being a single notch in the periphery of the wheel. This results in the yarn reserve being laid down in a first layer and then in a second layer in the reverse direction to the first layer before the pawl 10 can pass through said single notch and the yarn guide 9 can return to the setting shown in Fig. 1. Figs. 7 and 8 (not shown) relate to means whereby if the apparatus includes a sensor that detects slackness in the yarn and means that severs the yarn in response to such detection, then such apparatus is overridden during the above described yarn reserve winding operation to ensure that there is no cessation of the winding operation as a full bobbin is doffed and a fresh bobbin is donned.
Patent GB-944901-A (GB)
Title: Improvements in or relating to fishing baits
IPC: A01K85/12
Filed: 1962-07-23
Abstract: 944,901. Fishing bait. P. J. CUMMINS. July 23, 1962, No. 28199/62. Heading A1A. A devon minnow spinner comprises three separate body sections 2, 3, 4, a set of wings 9 and a stem 6 passing through axial bores in the body sections and wings, and having at one end a hole 7 for the attachment of a fishing line which retains the body sections in assembled relationship, and at the other end a ring anchor 18 having a hole 8 for the attachment of a hook 16. The wings 9 are held in position by means of dowels 10, 11 which pass through holes 12, 13 in the wings and holes 14, 15 in the centre section 3 and nose section 2. The separate sections may be coloured differently.
Patent GB-322576-A (GB)
Title: Improvements in the manufacture of anthraquinone derivatives
IPC: C09B1/20
Filed: 1928-10-02
Abstract: 322,576. Imperial Chemical Industries, Ltd., Lodge, F., and Tatum, W. W. Oct. 2, 1928. 1: 4-Diaminoanthraquinones and derivatives. -A 2-sulphonic acid group 'in an anthraquinone- 2-sulphonic acid containing in the 1 : 4-positions amino or substituted amino groups, is split off by the action of a warm aqueous alkaline solution of glucose, fructose, or other polyhydroxylated substance having similar reducing action. In this way the 2-sulphonic derivatives of 1-amino-4- methylaminoanthraquinone (prepared by treating the corresponding 4-bromo derivative with methylamine in presence of a copper salt), 1- amino-4-anilinoanthraquinone, 1 - amino - 4 - ptoluidinoanthraquinone, 1-amino-4-p-aminoanilinoanthraquinone and 1: 4-diaminoanthraquinone may be deprived of their sulphonic acid group. If 1-amino-4-anilinoanthraquinone-2 : 8-disulphonic acid is treated in this manner 1-amino-4- anilinoanthraquinone-8-sulphonic acid is obtained. Most of the products dye acetate silk. 1-Amino-4 - anilinoanthraquinone - 2 : 8 - disulphonic acid is prepared by reducing 1-nitroanthraquinone-8-sulphonic acid to the amino body, brommating to form a 2 : 4-dibromo derivative, condensing this with aniline whereby the 4- bromine atom is replaced, and boiling the product with sodium sulphite to replace the 2-bromine atom by a sulphonic acid group.
Patent GB-911954-A (GB)
Title: Improvements relating to door sealing and resilient seal strips
Inventor: COVERLEY HAROLD ERNEST
IPC: B60J10/00
Filed: 1960-08-16
Abstract: 911,954. Draught excluders. GENERAL MOTORS Ltd. July 5, 1961 [Aug. 16, 1960], No. 28285/60. Class 20 (3). A tubular resilient seal strip 5 for sealing the junction between a slidable door and its surround is closed at its ends 15 and has a sac 11 shorter than the strip 5 attached to it either by one or more necks 10 or connected the whole length of the sac when this is less than the side of the door, to the body of the seal as shown at 14 in Fig. 6 and so arranged on the door or the surroumd that in use, the sac is compressed by the door when closed to inflate the tubular strip. The sac is disposed as at 1 la in Fig. 6 to present a surface at right angles to the seal surface of the strip, the seal surface 12 has a clearance of the door 13 until the latter is quite shut and the seal inflated.
Patent GB-855416-A (GB)
Title: Improvements relating to baking processes
IPC: A21D8/00
Filed: 1958-09-03
Abstract: The preparation of a batch of leavened bread dough involves mixing together the dough ingredients, discontinuing the mixing while the ingredients are in a wet, pasty form, allowing the mixed ingredients to stand for a time and only under self-induced temperature conditions sufficient to allow full fermentation development of the gluten and of flavour to take place to form a fermented dough, and mixing this dough by a rotary mechanical stirrer at a speed of at least 50 r.p.m. for a time sufficient to work the dough into a texture ready for dividing into baking units.  The dough mixing may be for 2-6 min.; the stirrer speed may begin at 50-100 r.p.m. and increase to 100-300 r.p.m.  The first mixture may stand at 76-79 DEG F. and the dough may be mixed at 90-100 DEG F.  All ingredients but the salt may be incorporated in the first mixing, the salt being added in the dough mixing operation.
Patent GB-350850-A (GB)
Title: An improved method of and apparatus for cleaning tanks such as the cargo tanks of oil transporting vessels
IPC: B63B57/02
Filed: 1930-09-22
Abstract: 350,850. Tanks. ARNOLD, C., 11, Southampton Buildings, London.-(Butterworth System, Inc. ; Bayonne, New Jersey, U.S.A.) Sept. 22, 1930, No. 28338. [Class 69 (i).] An arrangement for cleaning the tanks of cargo vessels comprises a fitting 13 which is rotated by means of the gearing shown and is provided with jets 15 which direct cleaning fluid against the sides of the tank the spent liquid being removed so as to maintain the bottom substantially free from liquid. The cleaning liquid which is conveniently stored in the wing tanks is heated by the coil 26 and circulated by the pump 9.