baber/WOPTO huggingface dataset:
Patent GB-986348-A (GB)
Title: Preparation of an adduct of benzene and maleic anhydride
IPC: C07D493/08
Filed: 1962-09-05
Abstract: The adduct of benzene and maleic anhydride having the formula <FORM:0986348/C2/1> is prepared by mixing benzene, maleic anhydride and a diaryl ketone together and exposing the mixture to sunlight. The diaryl ketone is of the formula Ar.Co.Ar1, Ar and Ar1 may be the same or different or comprise part of the same molecule.  The reaction may take place in a vessel of quartz, borosilicate glass or a "high density" polymer, insoluble in benzene and which transmits ultra-violet light at wave-lengths greater than 270 mm , e.g. PTFE or polyethylene.  The diaryl ketone may be benzophenone or fluorenone. The reaction is preferably carried out in the absence of oxygen.
Patent GB-967768-A (GB)
Title: Improvements relating to the production of images
IPC: G03C1/06
Filed: 1962-09-06
Abstract: 967, 768. Photographic processes. E.I. DU PONT DE NEMOURS & CO. Sept. 6, 1962 [Sept. 12, 1961], No. 34220/62. Heading G2C. A process for the formation of an image comprises (a) exposing to image-forming radiation, containing radiation in a region of normal sensitivity of a silver. halide photographic emulsion or of extended sensitivity conferred by the presence of an optical sensitizing dye, a washed, light-sensitive colloid-silver halide emulsion layer having an average grain size of 0.1 to 10 microns and containing (i) 0.5 to 120 mole per cent per mole of silver halide of a water-soluble stannous salt, (ii) a sensitizing amount of an optical sensitizing cyanine, pseudocyanine, carbocyanine or merocyanine dye capable of extending the sensitivity of a silver bromide emulsion from the normal blue region to the green, red or infra-red region of the spectrum, and having added thereto (iii) at least one chloride, bromide or iodide of lithium, sodium, potassium, calcium, magnesium or ammonium in an amount sufficient to provide an excess of halide ions over that necessary initially to precipitate all the silver as silver-halide; (b) latensifying the exposed element by irradiating it for to 60 seconds with light radiation which comprises the region of greatest response in the region of extra sensitivity conferred on the silver halide emulsion by the dye; and (c) photodeveloping the latensified element by exposing it to actinic radiation of wavelengths between 3000 and 5000 A having an intensity less than the exposing radiation (a) for at least one second. The emulsion may also contain 0.1 to 4 mole per cent of plum bous nitrate. Apart from the dyes the emulsions are similar to those of Specification 877, 841. In examples the emulsions contain the following dyes: - 5, 5<SP>1</SP>-dimethyl-3, 31, 9-triethyl benzselenazole carbocyanine iodide; 3, 3<SP>1</SP>-diethyl-9-methyl benzothiazole carbocyanine p-toluene sulphonate and its corresponding 5, 5<SP>1</SP>-dibromo-compound; 5, 5<SP>1</SP>, 9- trimethyl-3, 3<SP>1</SP>-diethyl benzothiazole carbocyanine iodide; 5, 5<SP>1</SP>-diphenyl-9-methyl-3, 3<SP>1</SP>-diethyl benzoxazole carbocyanine iodide; 5-methyl-3, 1<SP>1</SP>-diethyl- 2, 2<SP>1</SP>-selenopseudocyanine iodide; 5, 5<SP>1</SP>-dimethyl-3, 3<SP>1</SP>-diethyl-9 ethyl or phenyl benzothiazole carbocyanine iodide; 3-ethyl-5-[1-ethyl-2(1)-benzoxazolidene-isopropylidene]-2-thio-2, 4-oxazoledione; and 3-n-butyl-5-(3-ethyl-3-thiazolidene ethylidene)- rhodanine. Specification 931,636 also is referred to.
Patent GB-468785-A (GB)
Title: Improvements in or relating to the production of terpineol from pinene
IPC: C07C35/12
Filed: 1935-12-10
Abstract: Terpineol is prepared from pinene direct, by treating the pinene with a mixture of formic and ortho-phosphoric acids, each of a concentration of 60--75 per cent by weight, the amount of p phosphoric acid in the mixture comprising 20--40 per cent by weight of the formic acid present.  The phosphoric acid is stated to catalyse the reaction between the pinene and formic acid and to hydrolyze the resulting terpinyl formate.  The pinene may be treated alone or in a solvent, at a temperature below 50 DEG  C. and preferably 35 DEG  C.  On completion of the reaction, the acids are allowed to separate in a layer and drained off for re-use, whilst the oily layer is subjected first to treatment with a little caustic soda to saponify any terpinyl formate present and then to fractional distillation.  Examples are given of the treatment of pinene alone, of turpentine containing pinene, and of pinene dissolved in other terpenes, using mixtures of 70 per cent by weight formic acid and 70 per cent by weight phosphoric acid in appropriate proportions; the products comprise a mixture of a - and b -terpineol, the a -compound predominating.
Patent GB-1192824-A (GB)
Title: Improvements in or relating to 6,7-Methylene and -Halomethylene Steroids
IPC: C07J71/00
Filed: 1967-07-26
Abstract: 1,192,824. 6,7 - Methylene- and -halomethylene-steroids. SYNTEX CORP. 26 July, 1967 [11 April, 1967 (2)], No. 34330/67. Heading C2U. Novel steroids of the formulµ (wherein X is H, Cl or F; R<SP>1</SP> is OH or O acyl; R<SP>2</SP> is H, OH, O acyl, or, with R<SP>1</SP>, 1-alkoxy-alk-1, 1-ylidenedioxy; R<SP>3</SP> is H, α- or #-CH 3  or, with R<SP>2</SP>, alkylidenedioxy; R<SP>4</SP> is H, Cl or F; R<SP>5</SP> is OH or Cl, R<SP>4</SP> being Cl when R<SP>5</SP> is Cl; R<SP>7</SP> is H or CH 3 ; R<SP>8</SP> is H or phenyl optionally Cl-, F-, CH 3 O- or CH 3 -substituted; and Z is a carboncarbon single or double bond, being single when R<SP>7</SP> is H), which are mixtures of the 6α,7α- and 6#,7#-isomers are prepared from #<SP>4,6-</SP> or #<SP>1</SP>'<SP>4</SP>'<SP>6</SP>- steroids by reaction with dimethyl-sulphoxonium methylide or with an alkali or alkaline earth metal salt of an acid WCHXCOOH where W is Cl, I or Br and X is Cl or F. Hydroxy groups which become esterified in the reactions can be regenerated by alkaline hydrolysis; alternatively they may be protected. The products may be subjected to conventional procedures to introduce or interconvert substituents and double bonds. Thus, an 11- ketone product may be reduced to a 3#,11#-diol and then selectively oxidized to the 11#-ol-3-one, or an 11#-OH group may be introduced microbiologically; a 16α,17α-diol may be converted to the corresponding acetal or ketal; a #<SP>4</SP>-3,11- dione product may be converted via its 2- hydroxymethylene derivative to a ring A-fused pyrazole compound and the 11-keto group then reduced; and an 11#-ol may be dehydrated to a #<SP>9(11)</SP>-compound and this converted via the bromohydrin and 9,11-oxido compound to the 9α-fluoro-11#-ol or directly converted to the 9α, 11#-dichloro compound. 16α - Methyl - 17α,20; 20,21 - bismethylenedioxypregna-4,6-diene-3,11-dione is prepared by converting 16α - methyl - pregn - 4 - ene - 17α, 21-diol-3,11,20-trione to the bismethylenedioxy derivative and dehydrogenating this. 16α-Acetoxy - 17α,20; 20,21 - bismethylenedioxy - pregna- 4,6-dien-11#-ol-3-one is similarly prepared from the #<SP>4</SP> - 11#,16α,17α,21 - tetrol, acetylation following side chain protection. The 6,7 - methylene and -halomethylene steroids of the invention have variously corticoid, anti-inflammatory and progestational activity, and the progestational agents also possess varying degrees of anti-androgenic, anti-estrogenic and anti-gonadotrophic activity; and they may be made up into pharmaceutical compositions with suitable carriers. Specification 1,192,825 is referred to.
Patent GB-1010782-A (GB)
Title: Machine for automatic application of electrical circuit elements to circuits boards
IPC: H05K13/04
Filed: 1962-09-07
Abstract: 1,010,782. Assembling electrical components on circuit boards; shearing. STANDARD TELEPHONE & CABLES Ltd. Sept. 7, 1962 [Sept. 14, 1961], No. 34343/62. Headings B3A and B3W. A machine for mounting components in printed circuit boards by means of knives, external wire benders and punches which cut the component wires to length, bend and insert them and press the wire ends after insertion by means of anvils is characterized in that a rocking body 14, 15 is provided which is urged towards the circuit board by control means and rocked by curved guide surfaces on guide bodies such as to control the relative motions of the external wire benders, knives, and drift punches. The machine is actuated by an air cylinder 3 and a piston having a piston rod 4. The piston/cylinder unit is mounted solely by means of two pivot pins linking the piston-rod with an upper pivoted arm 5 and the cylinder with a lower pivoted arm 7. The motions of the two arms 5, 7 in response to piston/cylinder movement is positively controlled at all times by links 8 and 9 carried on a double throw crankshaft rigidly mounted on the machine frame. The upper arm 5 has a rod 13 pivotably connected to it; the lower end of this rod is ball-shaped and is retained in the two-piece rocking body 14, 15 which controls the relative motions of the various parts of the operating head. The lower portion 15 of the rocking body pushes against the top faces of two rectangular section forked members, i.e. the external wire bender 18 and the drift punch 19. As seen more clearly in Fig. 3, the upper ends of the external wire bender 18 and the drift punch 19 are angled and this in conjunction with a specially profiled surface 16 of the housing 17 rocks the rocking member 15 as it is moved downwards, thus giving relative motion between the external wire bender 18 and the drift punch 19. Referring now to Fig. 2 which is a front sectional view of Fig. 1, a pair of rectangular section knives 20 abut the end faces of the external wire bender 18 and the drift punch 19. Each knife 20 has a recess 29 which, in conjunction with rollers 21 carried in the external wire bender 18 and the drift punch 19 transmit motion from the latter two members to the knives.
Patent GB-453809-A (GB)
Title: Improvements in or relating to air heating stoves
IPC: F24H3/06
Filed: 1935-12-11
Abstract: 453,809. Heating air. VYSKOVSKY, A., 62, KrenovÓ Gasse, Brno, Czecho Slovakia. Dec. 11, 1935, No. 34357. [Class 64 (i)] [See also Group XI] In a stove having a helical air-heating passage 2 in an annular jacket around the combustion chamber, the helical passage is formed by ribs 34 which are integral with the wall of the combustion chamber and which abut against the outer wall of the jacket. Further ribs 33 on the wall of the combustion chamber project into the air-heating passage. Air is forced or drawn through the passage by a fan 1, which also supplies air to conduits 13, 7 opening beneath and above the grate, and to a conduit 9 opening into the chimney 11 to induce a draught.
Patent GB-963167-A (GB)
Title: Amplifier gain control device
IPC: H03G3/30
Filed: 1962-09-07
Abstract: 963,167. Transistor gain control circuits. CHARBONNAGES DE FRANCE. Sept. 7, 1962 [Sept. 8, 1961], No. 34389/62. Heading H3T. A transistor amplifier T, Fig. 1, in common emitter connection is provided with a collector load R and negative feedback resistor r in the emitter circuit. The gain is varied by variation of the base bias, a delay being introduced in accordance with the invention due to the presence of the negative feedback produced by resistor r. As applied to the provision of automatic gain control in a three-stage amplifier, the output of the third stage T3, Fig. 2, is rectified by a diode D3 and smoothed, the smoothed D.C. being fed via resistor R22 and the secondary of transformer Tr2 to the base of the second stage T2. The emitter circuit of this comprises a resistor R13 providing negative feedback and delay in accordance with the invention. The collector circuit includes a resistor R14 from which a variable bias is applied to the cathodes of damping diodes D1, D2, shunting respectively the secondary of transformer Tr1 and primary of transformer Tr2. These diodes provide a further D.C. amplified automatic gain control, their anodes being so biased that delay occurs in this. It is stated in the Specification that the invention may also be applied to other, e.g. valve, amplifiers.
Patent GB-856461-A (GB)
Title: Improvements in the treatment of liquids
Inventor: DUMMETT GEORGE ANTHONY
IPC: B01D19/00
Filed: 1955-12-02
Abstract: Volatile impurities are removed from a liquid by a process wherein the liquid is caused to descend within a casing and in so doing to pass successively on to the open upper surfaces of two or more rotating discs which break up the liquid flow into particles creating two or more superposed transversely extend <PICT:0856461/III/1> ing layers of liquid mist while a vapour is passed upwardly through the casing so that it passes successively through the mist layers entraining volatile impurities, the vapour and entrained impurities are removed from the upper part of the casing and the purified liquid from the lower part.  The preferred vapour is steam.  The process is applicable to the treatment of lactic liquids such as milk and cream. Casing 1 houses a spindle 2 carrying a number of spinner discs 3. Within the casing are catch plates 8 having a number of upwardly flanged openings 10 permitting the upward passage of vapour and a centrally located downwardly flanged opening 9 directing the liquid to the spinner disc below.  The vapour is introduced through perforated ring member 6 and passes out through outlet 7 to ejector condenser 14 which produces a vacuum of, for example, 10-2311 Hg in the casing.  Liquid to be purified is introduced by pipe 4 and directed on to the uppermost disc 3.  Purified liquid is removed via line 12.
Patent GB-818068-A (GB)
Title: Methods for producing a base for electrostatic printing
IPC: H01B1/00
Filed: 1955-12-02
Abstract: 818,068. Semi-conductor devices. RADIO CORPORATION OF AMERICA. Dec. 2, 1955 [Dec. 15, 1954], No. 34637/55. Class 37. [Also in Group XX] A base for electrostatic printing is formed by applying a dispersion in water of a finelydivided photo-conductor and an electricallyinsulating film-forming vehicle, to a backing plate to form a coating and then drying the coating. The dispersion may be made by mixing a dispersion of the photo-conductor with a dispersion of the vehicle or by mixing the photo-conductor and vehicle and dispersing the mixture. The backing plate may be of mica, paper, cellulose acetate, copper, brass, aluminium or glass. The photo-conductor may be an oxide, sulphide, selenide, telluride, or iodide of Cd, Hg, Sb, Bi, Mo, T1, A1, Pb, or Zn, arsenic trisulphide, cadmium arsenide, lead chromate, or selenium or mixtures thereof chosen to provide a suitable spectral response. The filmforming vehicle may be a polyvinyl acetate resin, a natural or synthetic resin, wax, or silicone resin of high dielectric constant and dielectric, strength, a cellulose ester, polystyrene or shellac, or a resin monomer which is polymerized after dispersion. In one example a dispersion of 100 grams of photo-conductive ZnO and 2 grams of a dispersing agent, e.g. a mix of sodium salts of polymerized alkyl naphthalene sulphonic acids in 100 grams of water is mixed with a dispersion of 77 grams of polyvinyl acetate resin in 63 grams of water which has been agitated for half an hour with 8 grams of the plasticizer tricresyl phosphate and the mixture applied to a base plate which is then heated at 105‹ C. for 5 minutes to dry it. An electrostatic print is formed on such a base by first placing it on an earthed base in a dark enclosure and electrostatically charging its surface uniformly, and then projecting an image of the subject to be printed formed by infra-red ultra-violet or visible light or by electrons on to the surface. A developer such as a charged ink mist or a charged powder is then applied to the surface and adheres to the parts of it which have retained some charge. The image may be fixed where a powder developer is used by applying a coating of a solvent for the powder or the vehicle to the surface to cause the powder to adhere to the surface and then evaporating the solvent, by pressing the powder image into the surface or, if the powder or vehicle has a low-melting point by heating to fuse the powder to the coating.
Patent GB-373582-A (GB)
Title: Improvements in and relating to the dyeing of cellulose acetates
IPC: D06P1/24
Filed: 1930-11-18
Abstract: Cellulose acetate, dyeing; vat dyes, dyeing with.--Fast orange to violet dyeings are obtained on cellulose acetate silk by the application of leuco compounds of aminoanthraquinones or derivatives thereof in the form of suspensions or of soap solution or other dispersions.  The following examples are specified: (1) Acetate silk is dyed a bright pure rust-red by treatment for 1 hour at 70 DEG  C. in a soap bath containing leuco-1 : 4-diaminoanthraquinone; the colour is unchanged on exposure to air or to light; the corresponding unreduced dyestuff dyes red-violet.  (2) Acetate silk is similarly dyed orange with leuco-1-amino-4-hydroxyanthraquinone; the corresponding unreduced dyestuff dyes blueish red.  (3) Acetate silk is similarly dyed bright bordeaux with leuco - 1 : 2 : 3 : 4 - tetraminoanthraquinone; the corresponding unreduced dyestuff dyes violet.  (4) Acetate silk is similarly dyed reddish-violet with leuco-diaminoanthrarufin; the corresponding unreduced dyestuff dyes bright blue.  (5) Acetate silk is similarly dyed reddish violet with leuco-1 : 4 : 5 : 8-tetraminoanthraquinone; the corresponding unreduced dyestuff dyes blue.
Patent GB-1479254-A (GB)
Title: Preparation of copper-free organic compounds which have been synthesised with the aid of copper salts
IPC: C07D285/12
Filed: 1975-08-21
Abstract: The removal of copper (I) compounds from a reaction mixture which contains water-insoluble organic compounds is effected by adding to the reaction mixture an oxidizing agent which converts the copper (I) compounds to copper (II) compounds which are soluble in the reaction medium. Thereafter, the water-insoluble organic compound is either allowed to crystallize out from the reaction mixture or is precipitated by adding a solvent which does not precipitate the copper (II) compounds. This process permits obtaining the water-insoluble organic compounds in a copper-free form without the effluent being loaded (polluted) with copper by any washing processes. This process is applicable to all reactions in which copper (I) compounds are used as catalysts or reactants and in particular is applicable to processes for the preparation of cyano-containing compounds in which the cyanide group is introduced by replacement of halogen atoms, using copper (I) cyanide.
Patent GB-1446810-A (GB)
Title: Leveler door for a coke oven
IPC: C10B25/16
Filed: 1974-08-07
Abstract: 1446810 Leveller door for coke oven BLOOM ENG CO Inc 7 Aug 1974 [6 Sept 1973] 34801/74 Heading C5E A leveller door 5 for a coke oven comprises a sheet metal closure member 10 having a flexible sealing edge portion 11 provided with an end surface which in use lies in a plane in which it seals the leveller opening 4, the edge portion being disposed at an angle of less than 90 degrees to the plane so that the closure member is of generally concave shape, and the edge portion be adapted to slidably engage, scrape and seal the area around the door opening when subjected to a compressive force. In the embodiment shown in Figs. 1-3 the leveller door 5 may be used with conventional mounting and latching apparatus 3 comprising a strong back 6 which is hinged to the coke oven door 2 and which is locked in place during operation by a latching bar 8. The leveller door 5 is provided with a mounting bracket 25 having a channel 26 therein by which it may be supported on the mounting member 12 of the mounting apparatus, the bracket 25 also having a bearing surface 27 which transmits compressive closing force, applied by the hand wheel 9 and lock screw, to the leveller door. The mounting bracket may be welded on to the back 28 of the closure member, as in Fig. 3, or may be welded into an orifice formed in the closure member (Fig. 5, not shown). A sealing seat 20 is detachably mounted on the coke oven door at 19. Figs. 6, 7 show an alternative mounting and latching apparatus 3<SP>1</SP> in which a mounting frame 43 is attached to the coke oven door 2<SP>1</SP>, mounting hinges 35 being welded to the back 28 of the closure member 10 and being pivoted to the frame 43. A lever arm 37 is also pivoted to frame 43 and passes through a U-shaped member 42 on the leveller door so that the door may be pulled open by the lever arm 37. A locking screw 38 passes through the lever arm 37 to apply compressive closing force to the door, plates 31, 32 on the door transmitting the force. As in the embodiment shown in Fig. 1, a removable sealing seat 20<SP>1</SP> may be provided, in this case on the leveller door frame 30 (Fig. 6). In all the embodiments described, the closure member 10 is preferably made from stainless steel of thickness #<SP>3</SP>/ 16  inch, and the sealing seats 20, 20<SP>1</SP> are also of stainless steel.
Patent GB-959288-A (GB)
Title: Improvements in and relating to cellulosic textile materials
Inventor: HUNT RICHARD EDWIN
IPC: D06M13/127
Filed: 1959-10-15
Abstract: Cellulosic textile materials, e.g. fibres, yarns and woven and non-woven fabrics consisting wholly of natural cellulose fibres, such as cotton or linen, cellulose acetate or viscose rayon or containing more than 50% by weight of such cellulose fibres in admixture with non cellulosic fibres such as nylon and wool, are stiffened by treating them with a mixture of formaldehyde, a modified starch capable of forming flexible films and containing a high proportion of material having a branched molecular structure than normal farinaceous starch which contains about 80% by weight of such material and pentaerythritol and heating in the presence of sufficient acid, e.g. phosphoric, oxalic or tartaric acid, or substance which liberates an acid, e.g. magnesium dihydrogen phosphate zinc nitrate or magnesium chloride, under such conditions that reaction takes place between the formaldelyde, modified starch, pentaerythritol and cellulosic textile material.  The modified starch may be normal farinaceous starch which has been etherified, e.g. a hydroxyalkylated starch, or a degraded starch in which the amylopectium content has been increased and is preferably present in the treating liquor in a concentration of 3-10% by weight of the treating liquor so that 2-6% by weight is deposited on the textile material.  The treating liquor may also contain an agent to modify the handle of the textile material which does not absorb chlorine, e.g. polyvinyl alcohol or polyvinyl acetate or copolymers thereof such as a vinylacetate/vinyl caprate copolymer.  The textile materials are preferably dried after impregnation and before heating. Treated fabrics may be used for making petticoats, collars, cuffs, linings and interlinings.  Specification 827,645 is referred to.
Patent GB-444506-A (GB)
Title: Improvements in visible card indexes
IPC: B42F17/18
Filed: 1934-12-05
Abstract: 444,506. Visible card indexes. ELLIS, C. H., and CAVE, C. W., 45, Farringdon Road, London. Dec. 5, 1934, No. 34925. [Class 146 (i)] In a visible card index of the type in which a card holder is hinged to a carrying bar provided with projecting ends for engagement with grooves of a base-member, the carrier bar is of rectangular cross-section with a depth exceeding the clearance between the bar and the grooves of the base-member, and a flexible attach. ment tab folded and joined to form a barencircling sleeve and two attachment cheeks is so formed that the attachment cheeks extend in a plane forming a level continuation of the upper surface of the bar. The hinge 4, of linen or the like, is folded round and secured by adhesive to all four sides of the flexible bar 1, and the cheeks 4 are attached to either side of the card-holder 2. The top cheek 4 is on a level with portion 5 of the loop of the hinge so that successive bars can rest closely against each other. The card-receiving slots are arranged so as to terminate at the edge of the cheeks 4 to prevent tearing. The loop 3 may be preformed by moulding, in which case the bar 1 may simply slip into it.