baber/WOPTO huggingface dataset:
Patent GB-960993-A (GB)
Title: Process for the production of surface-active derivatives of polyalkoxy oligosaccharides
IPC: A01N25/30
Filed: 1962-12-31
Abstract: Surface active compounds are made by reaction of one or more oligosaccharides with propylene, and/or butylene oxide until a product is formed with a molecular weight of at least 3,000, and reaction of the water insoluble product with a polybasic acid or a functional derivative thereof.  The acid esters thus obtained may be neutralized to give amino, alkali or ammonium salts.  Examples of oligosaccharides are saccharose, lactose, cellobiose, maltose and raffinose. Examples of polybasic acids and their functional derivative are sulphuric, chlorosulphonic; amidosulphonic, phosphoric; succinic; maleic and phthalic acid.  In an example saccharose is treated with propylene oxide in the presence of potassium hydroxide under pressure to give a product with a molecular weight of about 5,000. The ammonium salt of the sulphuric acid ester and the monoethanolamine salt of the maleic acid ester are prepared.ALSO:Surface active-compounds are made by reaction of one or more oligosaccharides with propylene and/or butylene oxide to give an insoluble product with a molecular weight of not less than 3,000 and reacting said product with a polybasic acid or functional derivative thereof.  The acid esters thus obtained may be neutralized to give the alkali metal, amino or ammonium salts. Examples of oligosaccharides are saccharose, lactose, cellobiose, maltose and raffinose.  Examples of polybasic acids are sulphuric, chlorosulphonic; amidosulphonic; phosphoric; succinic; maleic and phthalic acid. An example describes the preparation of a polyether and the potassium salt of its sulphuric acid ester from saccharose and propylene oxide.
Patent GB-1504885-A (GB)
Title: Pipe couplings
IPC: F16L27/08
Filed: 1974-11-14
Abstract: 1504885 Pipe couplings BRIDON ENG Ltd 24 Oct 1975 [14 Nov 1974] 49222/74 Heading F2G A pipe coupling for use with a marine loading arm comprises a cylindrical member 10 having mounting members thereon carrying clamping assemblies 12 for releasably clamping thereto a pipe flange to be coupled through the agency of an adaptor guide plate 17, a further cylindrical member 18 being disposed partially within and coaxially with the member 10, and the two members being formed with ball tracks 19, 20 containing ball bearings 22, so that the member 10 is rotatably mounted on the member 18 whilst being located axially relative thereto. The bearings 22 could be replaced by a cable coated with carbon loaded polytetrafluorethylene and a seal 24 bearing on a stainless steel inlay is provided between the members 10, 18. A lip seal 15 held in place by a ring 16 is disposed in the end face of the member 10.
Patent GB-1452614-A (GB)
Title: Method of chemically reacting a rectant which is liquid at  the reaction temperature with a gaseous reactant
IPC: F02G1/055
Filed: 1973-10-24
Abstract: 1452614 Preventing corrosion in reactors PHILIPS GLOEILAMPENFABRIEKEN NV 24 Oct 1973 [27 Oct 1972] 49458/73 Heading B1X [Also in Division C7] The inside wall of a reactor is protected from gaseous reactant by liquid reactors drawn up by the capillaries in a lining which completely or partially covers the inside wall, the gas supply and temperature of the reactor being controlled. The lining may consist of layers of metal wire gauze or metal wire between the wall and a cage of metal wire gauze, or of foamed metal, sintered metal grain or metal chips. Inert gas may be present. Means may be present to cut off gas supply above a given reactor pressure. A substance may be present which reacts at a quicker rate with the gaseous reactant than does the material comprising the wall of the reactor, but which reacts with the gas at a slower rate than does the liquid reactant. The reaction may be between Mg and TiCl 4  to give Ti and MgCl 2 , or between Li and SF 6  to produce heat that can be supplied to a thermodynamic engine, the products being LiF and Li 2 S.
Patent GB-973260-A (GB)
Title: Process for the production of n-substituted peri-naphtholactams
IPC: C07D209/92
Filed: 1962-09-20
Abstract: A process is described for the preparation of N-substituted peri-naphtholactams of either of the formulae <FORM:0973260/C1/1> or <FORM:0973260/C1/2> in which R is an alkyl, cycloalkyl, aryl or aralkyl group, one Y denotes the group R-N= and the other Y denotes the group =C=O; the group R may be substituted by halogen atoms and (or) hydroxy, acyl, acylamino, dialkylamino or alkylarylamino radicals and the aromatic rings may be substituted by halogen atoms and (or) alkyl, aryl, alkoxy or sulphonyl radicals. The compounds are prepared by the action of a Friedel-Craft condensing agent at a temperature above 100 DEG C. in an inert solvent on carbamic acid halides of either of the formulae <FORM:0973260/C1/3> or <FORM:0973260/C1/4> in which R is as indicated above.  Hal indicates a fluorine, chlorine or bromine atom, one of the symbols X indicates a hydrogen atom and the other symbol X indicates a group <FORM:0973260/C1/5> The carbamic acid halides are obtainable by the action of phosgene on appropriately substituted a -naphthylamines or their salts. Specified naphthylamines which may be so treated are 1-methyl- or 1-ethyl-aminonaphthalene, 1-n-propyl- or 1-isopropyl-aminonaphthalene, 1-n-butyl- or 1-stearyl-aminonaphthalene, 1-cyclohexyl- or 1-benzyl-aminonaphthalene, 1-b -phenylethyl- or 1-phenyl-aminonaphthalene, 1-p-tolyl- or 1, 41-ethoxyphenyl-aminonaphthalene, 1-methylamino-2-ethoxynaphthalene, 1-ethylamino -2-butoxynaphthalene, 1-ethylamino-7-methoxynaphthalene, 1-ethylamino-4-phenylsulphonylnaphthalene, 1-ethylamino-4-ethylnaphthalene, 1-ethylamino-4-chloro- or -2, 4-dichloro-naphthalene, 1, 5-bis-methylaminonaphthalene, 1, 5-bis-phenylaminonaphthalene and 1, 4-bis-(41-ethoxyphenylamino)-naphthalene. Examples are given in which (1) 1-ethylaminonaphthalene is treated with phosgene in 1, 2-dichlorobenzene and the product, without isolation, is treated at 140-160 DEG C. with aluminium chloride to yield N-ethyl-peri-naphtholactam; (2) 1-methylaminonaphthalene similarly yields N-methyl-peri-naphthalactam; (3) N-phenyl-N-1-naphthylcarbamic acid chloride, treated at 150-170 DEG C. with aluminium chloride in 1, 2-dichlorobenzene, yields N-phenyl-peri-naphtholactam; (4) N-(41-methylphenyl)-1-naphthylamine is treated with phosgene in 1,2-dichlorobenzene and the product is treated at 160 DEG C. with aluminium chloride to yield N-(41-methylphenyl)-peri-naphtholactam; if N-(41-ethoxyphenyl)-1-naphthylamine is treated in the same way, N-(41-hydroxyphenyl)-peri-naphtholactam is obtained, the ethoxy group being decomposed.  Other specified condensing agents are zinc chloride, boron fluoride, ferric chloride, titanium tetrachloride, tin tetrachloride and antimony trichloride.  Other specified solvents are trichlorobenzene, diphenyl and chlorinated diphenyls.
Patent GB-1166677-A (GB)
Title: Improvements in and relating to Manufacture of Sliding-Clasp Fasteners
Inventor: POREPP HANS
IPC: B21D53/50
Filed: 1966-11-04
Abstract: 1,166,677. Shaping sliding-clasp fasteners. H. POREPP. 4 Nov., 1966 [4 Nov., 1965], No. 49645/66. Heading B5A. [Also in Division E2] The interlocking elements of a sliding-clasp fastener are formed by coils 1, 2 of plastics filament having flattened portions 3, 4 forming coupling surfaces, and the coils themselves are flattened so that the portions 5, 6 and 7, 8 of the filaments adjacent to the coupling surfaces lie close to one another and the overall height of the fastener is little more than twice the diameter of the filaments. The chain of elements is formed by feeding two filaments through holes 18, 19 in reciprocating guide blocks 16, 17 against a freely rotatable cylinder 15. The blocks reciprocate side-by-side in a direction parallel to the axis of the cylinder and in anti-phase with one another, and when they are in their innermost positions with the filaments crossed, they are moved towards the cylinder 15 by a cam mechanism 24a so that projections 20, 21 on their undersides produce the flattened coupling surfaces. Then, when the blocks 16, 17 return to their outermost positions shown in Fig. 5, the filaments are sharply kinked about the ends of the coupling surfaces and the latter are interlocked. A slide 27 is then actuated to push the interlocked elements into a channel 28 where they are heat-treated to remove stresses. The cylinder 15 may have serrated ribs 22, 23 to produce the grooves 13 for longitudinal securing strings.
Patent GB-1409917-A (GB)
Title: Conversation detector for telephone systems
IPC: H04J3/17
Filed: 1972-10-27
Abstract: 1409917 Speech detector COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 27 Oct 1972 [29 Oct 1971] 49646/72 Heading H4R In a speech detection arrangement, the amplitude of the speech waveform is sampled every 250 M.S. and an amplitude index Na, is given a value - 1, 0, + 1, + 2, + 3 (Fig. 2a) depending on the amplitude range in which the speech signal lies at the time of sampling. The amplitude indices are summed to give an accumulative index Nc which is increased by the value of Na at each sampling instant and speech is detected to be present after the accumulative index No has exceeded a certain level and until the index Nc returns to zero. Means are provided for keeping a speech circuit open for one of two fixed periods after the index Nc has returned to zero, the period depending on how long the previous speech activity has lasted. The embodiment described relates to a 256 channel P.C.M. T.D.M. system and the speech detection arrangement is constituted by a minicomputer which performs the speech detection for all 256 channels on a T.D.M. basis (Figs. 4- 6, not shown). The amplitude samples for the speech detection are therefore in P.C.M. form and the determination of Nc is a purely digital operation. In addition an index Np is included in the sum Nc; this index represents double polarity changes in the speech signal during a period of three successive sampling periods, and is determined as follows. The polarity of the amplitude at each sampling instant is given a value S of 1 or 0 depending on whether the amplitude is positive or negative. Amplitudes in the range - 1 to - 1 (Fig. 2a) are given a value 1 or 0 according to the value given to the amplitude prior to the amplitude entering the range, the values S being given in Fig. 2c for the waveform shown. At each sampling instant the values S for the current and two preceding sampling instants are examined for the sequences 101 and 10 which are given an Np index value of 1, all other sequences being given an Np value 0 (Fig. 2d). The accumulative sum Nc (Fig. 2g) is then derived from Nc= #Np + #Na. Such an arrangement is said to weight the detection in favour of frequencies in the range 2-4 kHz which are more likely to be a part of speech (than to be noise). In the example shown the limiting value of Nc is chosen as 16 and when Nc is 16, positive values of Np + Na are not added on but negative values are subtracted (the opposite applying when Nc = 0). When Nc reaches 16 a counter is started which continues to count until Nc returns to zero, thereby measuring the speed period. For a speech activity period of less than 50 ms a hold period of 50 ms is added to the time at which Nc returns to 0, and for an activity period greater than 50 ms a hold time of 200 ms is added.
Patent GB-1492209-A (GB)
Title: Separators for stock suspensions
IPC: B01D29/11
Filed: 1975-12-03
Abstract: 1492209 Screening machine for paper pulp ESCHER WYSS GmbH 3 Dec 1975 [3 Dec 1974] 49667/75 Heading B1D A paper pulp-screening machine comprises a housing with an inlet 3 and respective outlets 11 and 9 for fractions which respectively pass through and are retained by cylindrical screen 2, rotary screen-cleaning vanes 6 and a system for maintaining an air space 12 above the pulp level E, which damps out pressure fluctuations which might otherwise interfere with a paper-making machine downstream of outlet 11. As shown level E is maintained by air inlet 13 and air outlet valve 15 opened and closed in response to variations in the difference between signals from pressure sensors 17 and 18. Valve 22 controls inflow of pulp in response to pressure fluctuations in outlet 11. In Fig. 2 (not shown) inlet 3 and outlet 11 are coaxially arranged and controls (not shown) are as in Fig. 1.
Patent GB-1078430-A (GB)
Title: Ore concentration process
IPC: B07C5/342
Filed: 1965-11-25
Abstract: Crushed ore containing several minerals is concentrated by separating out one of the minerals by a method involving coating preferentially some of the particles of the ore with a liquid fluorescent material, irradiating the ore with electromagnetic radiation and detecting the resulting characteristic radiation of the coating material photoelectrically in order to operate the separating mechanism. Various fluorescent materials for coating the ore are described, which may or may not need bonding agents (collectors).  A particular material is used depending on which mineral is to be sorted out, the material being applied by spraying or dipping, simultaneously or sequentially with the collector (if required). Fluorescent materials that can be used are as follows: anthracene, fluorescein, chrysene, aminoacetal picrate, petroleum base lubricating oil (which does not need a collector since it preferentially adheres to some minerals and also fluoresces), allylamine picrate, aluminium palmitate, ammonium mandelate, calcium triethanolamine theobromine, ferrous stearate, glyceryl mono-oleate, glyceryl monostearate, hydrastine, hydrastine chloride, lead naphthenate, lead linoleate, lead stearate, manganous stearate and benzene. Solids may be dissolved in solution for application e.g. anthracene in benzene.  Collectors mentioned are as follows.  Anionic (adhering to minerals such as metals and sulphides):-alkali alkyl xanthates (e.g. sodium sec.-butyl, potassium ethyl, sodium ethyl and potassium amyl xanthates); aryl (e.g. phenyl) dithiophosphoric acids; fatty acids (e.g. stearic); thio carbanilide; saponified fatty acids (e.g. sodium and potassium stearates); sulphonated oils; glycerides (e.g. tripalmitin and tristearin); and alcohols. Cationic (adhering to minerals such as silicates):-alkyl ammonium halides (e.g. amyl and cetyl, trimethyl ammonium bromides); alkali metal and alkaline earth metal alkyl aryl sulphonates (e.g. sodium and calcium, dodecyl benzene sulphonates); alkyl ammonium acetates (e.g. dodecyl ammonium acetate); long chain (e.g. dodecyl) alcohols; ethylenically unsaturated monocarboxylic acids (e.g. oleic and linoleic) and their soaps (e.g. sodium oleate and sodium linoleate); fatty amine acetates; and benzene.  Examples of minerals that can be extracted are: quartz, limestone and sulphide-containing minerals from various ores.
Patent GB-1138988-A (GB)
Title: Process for preparing cumene hydroperoxide
IPC: C07C409/10
Filed: 1967-11-03
Abstract: 1,138,988. Cumene hydroperoxide. SOC. ITALIANA RESINE S.p.A. 3 Nov., 1967 [3 Nov., 1966], No. 50212/67. Heading C2C. Cumene hydroperoxide is made by oxidizing cumene with oxygen or a gas containing molecular oxygen in a homogeneous medium in the conjoint presence of phenol and the sodium salt of cumene hydroperoxide. The reaction may be effected at 90-120‹ C. under slight superatmospheric pressure. Examples are given in which, besides phenol and the sodium salt of cumene hydroperoxide, the initial reaction mixture also contains cumene hydroperoxide itself, as a primer for the reaction.
Patent GB-1114889-A (GB)
Title: Multi-branched signal transmission circuits
IPC: H03H7/48
Filed: 1966-11-09
Abstract: 1,114,889. Amplifying circuits. WESTERN ELECTRIC CO. Inc. 9 Nov., 1966 [9 Nov., 1965], No. 50251/66. Heading H3T. [Also in Division H1] A multibranched signal transmission circuit suitable for operating in parallel a plurality of similar active elements 51, ... 54, Fig. 3-e.g. transistors or tunnel diodes-includes an input 180 degrees power divider 40 connected by 2(2<SP>n</SP>-2) isolating 3db quadrature hybrid junctions 41, . . . 44, in a balanced fan-out arrangement, to an output 180 degrees power divider 45, the fan-out arrangement including transposed connections 55 to provide a 180 degrees phase shift between each quadrature hybrid in the input end of the fan-out and a symmetrically located quadrature hybrid in the output end of the fan-out; the arrangement combines the broad-band impedance matching characteristic of quadrature hybrids with the avoidance of the necessity for the provision of a 180 degrees phase shifter for each pair of hybrids, as in the prior art construction of Fig. 2, (not shown). The equal, 180 degrees out of phase signals from the broad-band input power device 40 are each again equally divided by hybrids 41 and 42, branch 4 of each of which is terminated in a matched load. The transposed connections 55 introduce a broad-band 180 degrees phase difference into each of the connecting paths 3-3, the signals in each of the four connecting branches 3-3 and 4-4 being amplified by the separate amplifiers 51, . .. 54. The amplified signals are thereafter recombined by hybrids 43 and 44 and the 180 degrees power divider 45 to reconstitute a single, amplified, signal. The circuit may be employed as an oscillator by switching in the loop containing the inductively-coupled tuned circuit 57. Each of the broad-band 180 degrees power dividers 40 and 45 may be constructed, as shown in Fig. 4, from two quadrature hybrids 60 and 61, the 180 degrees phase difference resulting from short-circuiting branches 2 and 3 of hybrid 60 and open-circuiting branches 2 and 3 of hybrid 61. Higher order multibranched circuits are described, having 2<SP>11</SP> branches using 2(2n-2) quadrature hybrid junctions (Fig. 5, not shown); for such circuits, the isolating properties of the hybrid junctions may permit the use, for the two 180 degrees power dividers 40 and 45, of 180 degrees hybrid junctions.
Patent GB-1522640-A (GB)
Title: Sewing machines
IPC: D05B35/06
Filed: 1976-12-07
Abstract: 1522640 Sewing machine FRAME CLOTHING Ltd 7 Dec 1976 [10 Dec 1975] 50584/75 Heading D1G A machine for sewing together two or more strips 1, 2 of fabric, one on top of and parallel to the other has feed means (incorporated in the sewing machine 7 as disclosed) and a number of guide means 9, 11 for the strips and a number of sensing devices 5, 6 corresponding to the number of strips, arranged to sense the passage of each strip and on sensing the end thereof to generate a signal stopping the sewing means. A third sensor 12 is provided to monitor the sewing thread 13. The guide 11 is a folding guide.
Patent GB-1088597-A (GB)
Title: Starter bar assembly and continuous casting apparatus
IPC: B22D11/08
Filed: 1964-12-11
Abstract: 1,088,597. Continuous casting machines. UNITED STATES STEEL CORPORATION. Dec. 11, 1964 [Dec. 26, 1963], No. 50628/64. Heading B3F. A chill plate 16 is anchored to the top of the starter bar 10 by latches 26, 27, which are released, so that the starter bar is detached from the casting, by the piston rods 46a, 47a of air cylinders 45. The cylinders may be operated at the appropriate time by means of a limit switch 53 actuated by a cylinder 50 whose piston rod 52a engages a recess 48 in the starter bar 10 as the casting descends.
Patent GB-1108999-A (GB)
Title: Picture illumination control circuit for projectors
Inventor: REIMANN HUBERTUS
IPC: G03B21/20
Filed: 1965-11-30
Abstract: 1,108,999. Compensating for excessive film transparency. PENTACON DRESDEN KAMERA-und KINOWERKE VEB. Nov. 30, 1965, No. 50757/65. Heading G1A. The lighting current to the lamp of a projector is reduced to a predetermined value if the transparency of the film being or to be projected is such that the luminous intensity of the projected beam exceeds a predetermined but adjustable value, the control circuit including a transistor oscillator (1) having a photo-cell (5) in its base circuit which blocks oscillation up to the predetermined light value and which at the onset of oscillation operates a relay (19) to open switches (20), (21) and thus insert a resistor (24) in the supply to the projector lamp (25). The condition is maintained until operation of the film holder to change the film actuates a switch (12) to short circuit resistor (16). Alternative light reducing arrangements may comprise a variable aperture or a pivotable grey wedge, and the test on the transparency may be made in the dark period during the changing of films. The photo-cell may be in ring form around the projector objective lens.
Patent GB-507922-A (GB)
Abstract: 507,922. Credit - authorizing telephone systems. A S S O C I A T E D E L E C T R I C LABORATORIES, Inc. Dec. 22, 1937, No. 35556. Convention date, Dec. 23, 1936.- [Class 40 (iv)]. [Also in Group XVIII] In a credit-authorizing system, a salesman inserts a card into a holder, dials the number of the credit authorizer concerned, and gives her the necessary information telephonically. If credit is authorized, a signal is sent from the authoriser to cause the card to be punched or otherwise permanently marked. As shown, the insertion of the card changes-over contacts 102 to cause the line switch LS-1 to operate in known manner in search of a co-ordinate switch S. When it switches through, changeover relay 117 completes the circuit over the loop for the line relay 122 which energizes release relay 127 and repeats the first dialled digit to vertical magnet 133. At the end of the digit, 117 makes a self-interrupting circuit for the rotary magnet 140. When the switch finds an idle' individual circuit, Fig. 2, at the credit-authoriser's position, 130 switches through and 122, 127 fall back. 201 . in the individual circuit holds the connection and lights lamp 206. When the authoriser throws key K-1, relay 209 lights 208 instead of 206 and the talking circuit is extended to the telephone set A.T.C. 210 pulls up over this circuit and lights 212. The authoriser now operates.K-3 to ring the bell at the outstation. The salesman then enquires as to the account and if credit is allowed the authoriser throws key K-4, 215, 219 pull up, ringing current is connected to the talking circuit and ground is connected to wire 148 to operate the punch magnet 154 and relay 156. 156 disconnects the upper part of the loop, lights 157 and locks until the card has been withdrawn. Restoration of key K-4 releases all the operated central station apparatus by releasing 215. If credit is refused, the removal of the card extinguishes lamp 212 and the authoriser. operates release key K-2 and restores key K-1. The authoriser can establish connection with an out station by operating key K-5 and dialling the appropriate number.
Patent GB-1512309-A (GB)
Title: Metallizing compositions
IPC: C03C8/18
Filed: 1976-12-07
Abstract: 1512309 A glass-composition HERCULES Inc 7 Dec 1976 [8 Dec 1975] 50982/76 Heading C1M [Also in Division C7] A metallizing composition for firing on a substrate such as glass, ceramic or metallic, comprises in per cent weight (a) 50-88 of at least one powdered metal, e.g. Au, Ag, Pt, Pd, Rh, Ir, (b) 2-40 of a crystallizable glass frit comprising 40-70 SiO 2 , 10-31 Al 2 O 3 , 3-20 Li 2 O, 2-15 B 2 O 3 , 0-4 As 2 O 3 . 0-5 Na 2 O, 0-5 K 2 O, 0-6 Bi 2 O 3 , 4-19 ZrO 2  and/or 1-10 TiO 2 , (c) 5-48 inert liquid and (d) 0-20 inert filler or pigment. A silver stain may be applied to the substrate prior to coating with the metallizing composition which is then fired at 590‹-900‹C.