baber/WOPTO huggingface dataset:
Patent GB-1528590-A (GB)
Title: Production of pure cationic dyes
IPC: C09B23/16
Filed: 1975-12-30
Abstract: 1528590 Azamethin dyes BASF AG 30 Dec 1975 53099/75 Heading C4P Cationic dyes of formula (in which each A is independently alkyl or are together alkylene; A<SP>1</SP> is optionally substituted alkyl; A<SP>2</SP> is H or completes an optionally substituted 5- or 6-membered ring fused to the ortho position of ring E and which optionally is substituted or has fused thereon a six-membered heterocycle; AS is an anion; rings B and E are optionally further substituted), are prepared by condensing at 0-50‹ C. in the presence of an inert organic solvent and aliphatic or aromatic carboxylic or sulphonic acid, an aldehyde of Formula II and an amine of Formula III The dyes may be precipitated from the reaction solution, if necessary by addition of acid. The examples relate to the preparation of dyes in which A is methyl; A<SP>1</SP> is methyl, ethyl or benzyl; A<SP>2</SP> is H and E is substituted by methyl, chloro or 1 or 2 methoxy groups, or A<SP>2</SP> and E together form a hexahydrocarbazole, 2-methyl-dihydroindole, dihydroindole, tetrahydroquinoline, 6-methoxytetrahydroquinoline or 4-methyl-tetrahydroquinoxaline nucleus; ring B is unsubstituted or substituted by chloro, methyl or methoxy; A<SP>#</SP> is hydrosulphate, hydrophosphate, chloride, citrate, tartrate, p-toluenesulphonate, formate, benzoate or acetate.
Patent GB-1326270-A (GB)
Title: Method of etching surfaces comprising tin oxide
IPC: H05B33/28
Filed: 1970-11-10
Abstract: 1326270 Etching WESTERN ELECTRIC CO Inc 10 Nov 1970 [10 Nov 1969] 53353/70 Heading B6J A surface comprising tin oxide (SnO 2 ) is etched by forming a metallic layer on the portion of the surface to be etched and contacting the layer with an aqueous solution of acid to produce hydrogen to reduce the tin oxide to a form readily soluble in the acid solution whereby the tin oxide in contact with the metallic layer is removed. The metallic layer may be formed of one or more of aluminium, cadmium and zinc. The acid may be hydrochloric acid present in amounts from 1% by volume to saturation. A current may be passed through the coated surface as a cathode while in contact with the solution as electrolyte, in order to speed etching. The solution may also be heated.
Patent GB-1145037-A (GB)
Title: A resilient sheet metal clip
IPC: F16B5/12
Filed: 1967-11-23
Abstract: 1,145,037. Spring clips; stud and socket fastenings. UNITED-CARR Inc. 23 Nov. 1967 [29 Nov., 1966], No. 53422/67. Heading E2B. A resilient sheet metal clip for securing a moulding 13 to a support 12 having a headed stud projecting therefrom comprises a generally U shaped body 2 comprising two limbs 4 joined by a web 3, a spring tab 5 extending outwardly from the web in the opposite direction to the limbs and adapted to bear against the support and a mouding engaging wing 6 extending forwardly of each limb from the open end of the U shaped body for engaging the moulding, the limbs being formed with slots to receive the head 11 of the stud when the stud is located between the limbs. In the construction shown each wing has an irregular polygonal configuration each wing providing a support engaging foot 8 which spaces the body from the support. The edges of the wings remote from the U shaped body are tapered to provide abrupt shoulders 9 over which the moulding is snap engageable.
Patent GB-1423410-A (GB)
Title: Processes for the squeezing of liquid ammonia impregnated textile cellulosic materials
IPC: D06M11/00
Filed: 1973-11-16
Abstract: 1423410 Squeezing liquid ammonia from fabrics OMNIUM DE PROSPECTIVE INDUSTRIELLE SA 16 Nov 1973 [27 Nov 1972] 53435/73 Heading DIP [Also in Division F4] A textile composed partly or completely of natural or regenerated cellulosic fibrous material and impregnated with liquid ammonia is subjected to a pneumatic squeezing by means of a compressed gaseous ammonia stream to remove liquid ammonia mechanically retained on the material. The pressure of the stream is preferably between 100 g and 5 Kg per cm<SP>2</SP>. The temperature of the stream is preferably equal to the boiling temperature of ammonia in the same pressure conditions. Any remaining ammonia may be removed by vapourisation. The fibrous material may be in the form of fibres, yarn, sheets, knitwear, or woven or non-woven fabrics.
Patent GB-1459288-A (GB)
Title: Process for cleaning low alloy and non alloy steel and iron- containing materials
IPC: C23G1/32
Filed: 1974-12-10
Abstract: 1459288 Cleaning metals in molten salt baths HARTOL-WERK VEB 10 Dec 1974 [11 Dec 1973] 53455/74 Heading C7E Ferrous metals are cleaned in a molten salt bath comprising 50 to 90% caustic alkali, 10 to 40% of a borate or phosphate of an alkali or alkaline earth metal, and 0.1 to 10% SiC. The temperature may be 300 to 600‹C and the time of contact up to 120 minutes.
Patent GB-1472908-A (GB)
Title: Methods and tools for cutting products of asbestos cement or other materials having similar properties
IPC: B28B11/12
Filed: 1974-12-11
Abstract: 1472908 Punching apparatus INTEROC AB 11 Dec 1974 [12 Dec 1973] 53665/74 Heading B4B A method of cutting asbestos-cement sheet material products 17 or other sheet materials having similar properties, comprises first cutting a slot tapering from one flat side to the other, then breaking-off the approximately triangular pieces on each slot edge which form the taper so that the slot has approximately the same width from one flat face to the other. The slot is cut by a tool 10 having a punch 12 provided with a narrow portion 14 and a wider portion 15, the punch being slidable on a guide post 11 which is formed with a die 13; the die opening 16 is substantially the same length as the combined portions 14, 15 and substantially the same width as the portion 15. The punch is adapted to be connected to a mechanism for converting the rotary motion of, e.g. a portable electric or compressed air drill shaft, to a reciprocating motion. In use, a sheet 17 of flat or corrugated asbestos cement is placed below the narrow portion 14 of the punch as shown in Fig. 1 so that a tapered-sided slot is formed, Fig. 3. The sheet is then moved below both portions of the punch such that the punch portion squares off the tapered edges of the previously cut slot and the portion 14 cuts a fresh narrow slot. The leading edges of the guide post 11 are rounded so that the latter can enter the slot as cutting proceeds. The punch portion 15 is also formed with an extension which remains in the slot so as to guide the punch.
Patent GB-1224785-A (GB)
Title: Removal of acid catalysts from reaction products
IPC: B01J19/00
Filed: 1968-11-15
Abstract: 1,224,785. Reductive removal of sulphuric acid catalysts; cyclization of rubbers. CHEMISCHE WERKE ALBERT. 15 Nov., 1968 [17 Nov., 1967; 28 March, 1968; 3 Aug., 1968], No. 54404/68. Headings C3E, C3P and C3R. [Also in Division C2] Sulphuric acid and/or acid-reacting derivatives thereof are removed from a mixture by heating the mixture with an "unsaturated terpene compound" to a temperature at which the acid is reduced to volatile products which are expelled from the mixture. The process particularly relates to the removal of sulphuric or sulphonic acids from the products of reactions which they have catalysed, more particularly reactions involving "unsaturated terpene compounds". Such reactions include dimerization of resinic acids or esters, or their reaction with phenols, and the cyclization of natural or synthetic rubber; non-terpene reactions include the acid catalysed alkylation of phenols with olefins, reaction of phenols with aldehydes and ketones, and polymerization of olefins (e.g. in preparing coumarone-indene resins). In the examples (numbers given in parentheses) concentrated sulphuric acid (or o-chlorophenolsulphonic acid (15), phenolsulphonic acid (16, 20), or chlorosulphonic acid (18)) is used to catalyse the reactions of phenol with turpentine oil (1,15), ester gum (3), or colophony and maleic anhydride (4), the cyclization of polyisoprene in phenol (2, 16), the dimerization of colophony (5), the reactions of colophony with cresols (6), o-chlorophenol (7), o-sec-butylphenol (8), 1: 2: 4- xylenol (9), resorcinol (10), alpha-naphthol (11), bisphenol A (12), novolaks (13, 18), anisole (14), or phenol (after heating the colophony alone with H 2 SO 4 ) (17) and the reactions of phenol with isobutyraldehyde (balsam colophony added) (19) and of p-tert.-butylphenol with acrolein (tall colophony added). The reactions are mostly initially exothermic; SO 2  is evolved chiefly at 150-200‹ C., and volatiles are finally removed at 260‹ C. or under vacuum.
Patent GB-1271129-A (GB)
Title: Circuit or cable installation for reducing interference in telecommunication cables
Inventor: BREITENBACH OTTO
IPC: H04B3/28
Filed: 1969-11-06
Abstract: 1,271,129. Reducing interference in telecommunication cables. BAUM ELECTROPHYSIK G.m.b.H. 6 Nov., 1969 [7 Nov., 1968], No. 54472/69. Heading H4R. Interference in telecommunication cables from neighbouring power circuits is reduced by applying the potential difference between a conductor of the core and the sheath, or earth, to the input of an amplifier whose output is so applied, having regard to phase constant and amplitude between the sheath and earth, that the potential difference between the core and sheath is reduced. The embodiment shown in Fig. 1 is intended for previously made lengths of cable which subsequently come within the influence of power equipment. A single conductor 1 has its voltage with respect to sheath 2 fed to the input of an amplifier 3. The output terminals of the amplifier are connected to earth and to the sheath respectively. Other embodiments are described that have inputs with respect to earth, or have a number of the devices distributed along the cable with inputs connected to the core and outputs connected to the sheath, or have transformers (isolating or step down transformers) with their screened windings connected to the sheath.
Patent GB-1447500-A (GB)
Title: Thermosetting resin and a process for producing same
IPC: C08G59/40
Filed: 1973-11-23
Abstract: 1447500 Polymers containing oxazolidone and isocyanurate rings HITACHI Ltd 23 Nov 1973 [29 Nov 1972] 54573/73 Heading C3B A resin composition comprising one equivalent of an at least di-epoxide (I) and at least 1À5 equivalents of a polyisocyanate (II) is heated at 80 C. or above in the presence of 0À1-10% by wt. (of I+II) of a catalyst (III) for the formation of isocyanurate and oxazolidene rings. The product is a thermosetting resin containing as a recurring unit 2 or more isocyanurate rings each connected through an isocyanate residue and an oxazolidone ring connected at one side through an isocyanate residue to an isocyanurate having at the other side an epoxy residue. I may be a diglycidyl ether of bisphenol A or an epoxy novolac resin. II may be 4,4<SP>1</SP>-diphenylmethane diisocyanate, 2,4-tolylene diisocyanate or naphthalene-1,5- diisocyanate. III may be N-methylmorpholine, 2 - phenylimidazole, 1 - cyanoethyl - 2 - phenylimidazole or 2,4 - diamino - 6 - (2<SP>1</SP> - undecylimidazolyl-1<SP>1</SP>-)ethyl-5-triazine. Uses.-Electrical insulation at high temperatures.
Patent GB-1375027-A (GB)
IPC: B08B15/04
Filed: 1971-11-24
Abstract: 1375027 Welding by fusion E A LINDKVIST 24 Nov 1971 [25 Nov 1970] 54671/71 Heading B3R [Also in Divisions F4 and H5] In electric arc welding, wherein a consumable electrode rod 4 is clamped in a holder 1, welding fume extraction is effected by suction through a replaceable sleeve which surrounds the electrode and is such that it melts, carbonizes, pulverizes or is otherwise destroyed or decomposed under the influence of the arc so that during the course of the electrode and sleeve consumption, the electrode always projects outside the end of the sleeve. As shown, the sleeve is held by a clip 10 on to spigot 9 of a housing 7 arranged on the holder 1 and connected to a suction hose 6. The electrode 4 is held within a tool opening 3 by a clamp operated by a lever 5. In Fig. 2 (not shown), the spigot 9 is of articulated form to accommodate desirable bending of the electrode for purposes of welding accessibility. In Fig. 3 (not shown), the spigot is part of an elbow which is disposed at the end of an electrode holder supported flexible tube and has an opening admitting passage therethrough of the electrode. The sleeve 11 may be of paper, plastics, metal or metal alloy and the decomposed or melted sleeve portions may be sucked away with the fumes. The sleeve 11 may be supplied separately from or combined with an electrode.
Patent GB-1285649-A (GB)
Title: Device for supplying printing ink on to stencils, particularly cylindrical stencils, in machines for printing textiles and other web materials
IPC: B41F15/46
Filed: 1970-11-19
Abstract: 1285649 Printing apparatus ELITEXZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REDITELSTVI 19 Nov 1970 [9 Dec 1969] 54955/70 Heading B6C Cylindrical stencil 4 is inked through tubular body 7, which feeds ink through slots 8 into a space bounded by the stencil 4, squeegees 11 and 12 and end seals 14. Preferably the squeegees and end seals are all of resilient material and the squeegees are chamfered on their leading edges.
Patent GB-549846-A (GB)
IPC: C07D277/38
Abstract: 549,846. Thiazoles. SQUIBB & SONS, E. R. Dec. 3, 1940, No. 17217. Convention date, Jan. 13, 1940. [Class 2 (iii)] 2-Aminothiazole and its 4-alkyl or aryl derivatives are prepared by reacting thiourea with an α#-dihalogeno-#-Y-ethyl ester of a lower fatty acid, where Y represents hydrogen, alkyl or aryl. The products are useful intermediates for the manufacture of therapeutic compounds. The esters are obtainable by the process described in Specification 325,115, [Class 2 (iii)]. According to the examples, (1) 2-aminothiazole is prepared by heating α#- dichloroethyl acetate with thiourea in water and neutralizing with sodium hydroxide solution ; the α#-dichloroethyl acetate may be replaced by α#-dibromoethyl acetate or by α#- dibromoethyl butyrate ; (2) 2-amino-4-methyl or phenyl-thiazole are obtained from thiourea and α#-dichlolopropyl acetate or α#-dibromophenethyl acetate respectively.
Patent GB-1404618-A (GB)
Title: Magnetic disc memory and component
IPC: G11B5/55
Filed: 1972-11-29
Abstract: 1404618 Releasable fastenings; stud and socket fastenings INTERNATIONAL BUSINESS MACHINES CORP 29 Nov 1972 [10 Dec 1971] 55083/72 Headings E2A and E2B [Also in Division G5]  A carriage 23 carrying magnetic transducers in a magnetic disc cartridge is releasably connected to an actuator outside the cartridge. In a first embodiment, Fig. 15, the connection is a bayonet coupling: bayonet pin 226 is advanced through a slot (232), Fig. 9 (not shown) against spring bias 246, and is then rotated, upon rotation of a shaft 260 carrying an eccentric cam 262 and a sleeve 264 slotted to receive a ball arm 252. Rotation of the shaft 260 is accomplished by a solenoid-actuated mechanism, Figs. 17-20 (not shown) which also serves initially to position actuator coil 222. In a second embodiment, Figs. 23, 25, the connection is made by a collet device, wherein mating members 346, 348 are secured together by a collet 336 contracted thereabout by a spring-loaded cam sleeve 356. The sleeve 356 is disengaged by an assembly 328 including rollers 335, 368 which are moved together on actuation 418 of a solenoid.
Patent GB-1446088-A (GB)
Title: Circuit arrangement for sound-reproducing apparatus
IPC: G11B20/02
Filed: 1973-11-29
Abstract: 1446088 Sound playback apparatus BASF AG 29 Nov 1973 [30 Nov 1972] 55311/73 Heading G5R [Also in Division H4] In a sound playback apparatus a detector 7 is responsive to a characteristic signal indicative of an interruption in the playback signal to operate a switch 6 whereby an audio and/or noise generator 8, 9 inserts a bridging signal in the gap caused by the interruption. Detector 7 may operate switch 6 in response to the recorded signal envelope level, e.g. of an angle-modulated signal, dropping below a predetermined level, or to a control signal in the recording, or in response to a torque reduction, track changing or tape drive reversal in a tape recorder or to a predetermined angular position of a pick-up arm in a disc record player. The generator 8, 9 may be a delay circuit receiving an input 5a from transducer 4, or may be a generator in which the noise spectrum of a Zener diode (10), Fig. 2 (not shown), passes through a lowpass or bandpass filter with an upper cutoff at about 1 kHz. Alternatively, the generator may be an oscillator (14), Fig. 3 (not shown), set to a state of unstable equilibrium just prior to oscillation and giving a damped oscillation when triggered, or may comprise an AM demodulator (25), Fig. 4 (not shown), a lowpass filter (26), an AM modulator (27) and a noise and/or audio generator (28), the circuit giving an output signal which is amplitude-modulated with the low-frequency signal components of the envelope of the audio signal reproduced from the record medium 3, the time constant of filter (26) being greater than or equal to the duration of the gap caused by a drop-out or by track-changing of transducer 4. In a further form of generator 8, Fig. 5 (not shown), a potential divider (29) and a filter (30) act on the noise generated in playback of an F.M. recording when the carrier signal disappears during a drop out, to produce a gap-filling noise signal.
Patent GB-1504508-A (GB)
Title: Sliding door or window closures
IPC: E06B7/18
Filed: 1973-11-30
Abstract: 1504508 Spring-pressed seals HAVENHILL Ltd 26 Feb 1975 [30 Nov 1973] 55573/73 Heading EIJ A sealing arrangement for a sliding door or window and particularly to provide a fire-proof seal for a lift door comprises a longitudinal metal rib 6 which engages in a groove 10. The rib is carried on a rod or rods 7 each biassed by a spring 8 and with a split pin 9 acting as a stop. The groove 10 may be in a second sliding door (Fig. 5 not shown) or in the metal doorframe 14, in the latter case the groove and rib may be interchanged.
Patent GB-1242625-A (GB)
Title: Novel pyrazine derivatives and their conversion to imidazopyrazines
Inventor: GRABOWSKI EDWARD JOSEPH JOHN
IPC: C07D487/04
Filed: 1969-11-17
Abstract: 1,242,625. 3,5 - Diamino - 6 - chloropyrazinohydroxamic acid derivatives. MERCK & CO. Inc. 17 Nov., 1969 [20 Nov., 1968], No. 56182/69. Heading C2C. Novel 3,5 - diamino - 6 - chloropyrazinohydroxamic acid derivatives of the general formula wherein R is a hydrogen atom or a C 2-5  alkanoyl, benzoyl phenyl-C 2-5  alkanoyl, C 1-3  alkylsulphonyl, phenylsulphonyl or C 1-3  alkylphenylsulphonyl group, R<SP>1</SP> is a hydrogen atom or a C 3-7  cycloalkyl, phenyl, C 2-5  alkenyl or C 1-6  alkyl group or a C 1-6  alkyl group substituted by a C 1-3  alkoxy, pyridyl, phenyl, halophenyl or amino group, the amino group being a N- attached saturated heterocyclic residue having 5 or 6 ring members and optionally having one further heteroatom of O or N apart from the N atom that it is attached by, or having the formula -NR<SP>5</SP>R<SP>6</SP>, in which R<SP>5</SP> is a hydrogen atom or a C 1-5  alkyl, acetyl or propionyl group and R<SP>6</SP> is a hydrogen atom or a C 1-5  alkyl group and R<SP>2</SP> is a hydrogen atom or a C 1-3  alkyl group or R<SP>1</SP>R<SP>2</SP>N is a nitrogen-attached saturated heterocyclic residue having 5 or 6 ring members and optionally having one further heteroatom of O or N apart from the N atom that it is attached by, are prepared by treatment of an N - t - butyl - 3 - methyl - 3 - (3,5 - diamino - 6 - chloropyrazinoyloxy)-acrylamide of the general formula with hydroxylamine and optional reaction of the resulting 3,5 - diamino - 6 - chloropyrazinohydroxamic acid of the first general formula above wherein R is a hydrogen atom with an acyl chloride of the general formula RCl; and may be heated at or above their melting points for 15 minutes or maintained in a basic or neutral aqueous solution at 25-100 C. for from 30 minutes to 2 hrs., followed by acidification to pH 4, to form anti-hypertensive 5- amino - 6 - chloro - 1H - imidazo[4,5 - 6]pyrazin- 2-ones of the general formula N t - Butyl - 3 - methyl - 3 - (3,5 - diamino - 6- chloropyrazinoylozy)-acrylamides of the second general formula above are prepared by reaction of an alkyl 3-amino-5,6-dichloropyrazinoate with ammonia or an amine of the general formula R<SP>1</SP>R 2 NH, saponification of the resulting alkyl 3 - amino - 5 - R<SP>1</SP>R<SP>2</SP>N- 6 - chloropyrazinoate and treatment of the resulting 3-amino-5-R<SP>1</SP>R<SP>2</SP>N-6- chloropyrazinoic acid with N-t-butyl-5-methylisoxazolium perchlorate.
Patent GB-1176159-A (GB)
Title: Press for Fibrous Material
IPC: B30B11/20
Filed: 1967-12-12
Abstract: 1,176,159. Pelletting fodder. W. KUNZ A.G. 12 Dec., 1967 [14 Dec., 1966], No. 56430/67. Heading A2B. A press for compressing and extruding fibrous material such as fodder comprises an annular die member and a plurality of angularly spaced apart rotors mounted on a support which rotors co-operate with the inner wall of the annulus to force the material into and through the die cells, the rotors and die being arranged to rotate relative to each other, there being a central space radially inward of the rotors, and a screw conveyer for delivering the material into the central space, which extends into this central space and is mounted for rotation independently of the relative rotation of the rotors and die. The die cells may decrease in cross-sectional area from the inside to the outside of the annulus. The rotors may be fitted to the support by means of eccentric pins, such that by rotating the pins the distance between the surface of the rotors and the inner surface of the annulus may be adjusted. Axial grooves in the rotors assist in feeding the material to the die. The feed and the annulus may be driven independantly at differing speeds. The rotor diameter is preferably less than one third of the inner diameter of the annulus. Either the annulus or the rotor assembly may be driven. That portion of the feedscrew extending into the central space may be in the form of vanes.
Patent GB-1434968-A (GB)
Title: Process for the manufacture of light-fast tanning agents
IPC: C14C3/20
Filed: 1973-12-06
Abstract: 1434968 Synthetic tanning agents BASF AG 6 Dec 1973 [8 Dec 1972] 56620/73 Heading C3R A light-fast condensation product for use as a tanning agent is prepared by reacting a sulphonated aromatic compound, which is a mixture which per mole consists of 0À2-0À6 moles of naphthalenesulphonic acid and 0À8-0À4 moles of a phenolsulphonic acid, with a nitrogenous organic compound having a nitrogen atom attached to a carbon atom which is in turn attached by a double bond to an oxygen atom or another nitrogen atom, e.g. urea, guanidine, dicyandiamide or melamine or their C 1 -C 5  alkyl substituted derivatives, and formaldehyde or a formaldehyde donor, and further reacting the resultant condensate with a phenol and optionally formaldehyde, or with a phenol and a condensation product of a phenol and formaldehyde, there being used from 1-1À5 moles of nitrogenous compound and from 1À7 to 2À2 moles of formaldehyde or formaldehyde donor in the first stage per mole of sulphonated aromatic compound. Suitable phenols for use in the further reaction stage are phenol itself, 4,4<SP>1</SP>- dioxydiphenylpropane and 4,4<SP>1</SP>-dioxydiphenylsulphone. In the examples tanning agents are prepared by reacting sulphuric acid first with naphthalene and then with phenol and reacting the resultant product with urea and aqueous formaldehyde. The resultant condensate is further reacted with either (1) phenol and formaldehyde; or (2) phenol and a dioxydiphenylsulphone/HCHO condensate; or (3) dioxydiphenylpropane.