baber/WOPTO huggingface dataset:
Patent GB-1308411-A (GB)
Title: Direct-positive silver halide photographic emulsions
IPC: C07D239/58
Filed: 1971-04-19
Abstract: 1308411 Direct-positive silver halide photographic emulsions. FUJI PHOTO FILM CO Ltd 19 April 1971 [19 March 1970] 24739/71 Heading G2C A direct-positive fogged silver halide photographic emulsion contains at least one dye of the formula I: - wherein X<SP>1</SP>, X<SP>2</SP>, X<SP>3</SP>, X<SP>4</SP> and X<SP>5</SP> each represent halogen; p, q, r and s each represent 0 or 1; t is 0, 1, 2, 3, or 4; when p, q, r, s or t is 0, X<SP>1</SP>, X<SP>2</SP>, X<SP>3</SP>, X<SP>4</SP> or X<SP>5</SP> respectively is H; and B is H, alkali metal atom, NH 4  or an alkaline earth metal; together with at least one compound of the formula II:- wherein Y is CH or N; R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> each represent H, OH, alkoxyl, aryloxyl, halogen, hetercyclic nucleus, alkylthio, heterocyclylthio. arylthio, amino, substituted or unsubstituted alkylamino, cyclohexylamino, substituted or unsubstituted arylamino, heterocyclylamino, aryl or mercapto and A is A<SP>1</SP> or A<SP>2</SP>, A<SP>1</SP> being wherein M is H or a cation giving water-solubility to the compound; and A<SP>2</SP> is p-diphenylene, p-phenylene, m-phenylene, diphenyl ether -4, 4<SP>1</SP>-ylene, diphenyl methane -4, 4<SP>1</SP>-ylene or 1, 5- naphthylene, and when A is A<SP>2</SP>, at least one of R<SP>1</SP>, R<SP>2</SP>, R and R<SP>4</SP> is a substituent containing -SO 3  M wherein M is as defined above. Many examples are given of both compounds. Preferably 1-200mg of the dye of formula I are used per kg of the silver halide emulsion, and preferably 5-2000mg of the compound of formula II per kg of the silver halide emulsion. The ratio of the compound of the formula I to that of formula II is preferably 1:5 to 1:50 by weight. These emulsions are highly sensitive, can maintain a definite maximum density and a high contrast, do not suffer from re-reversion (the phenomenon that after the density of the characteristic curve decreases, the density increases again) and have a low minimum density.
Patent GB-157524-A (GB)
Title: Improvements in resilient wheels for road vehicles
IPC: B60B9/22
Filed: 1919-10-10
Abstract: 157,524. Lanchester, F. W. Oct. 10, 1919, [Convention date]. Addition to 141,096. Spring wheels with continuous outer rigid ring and pneumatic cushions.-The radially and laterally resilient wheel described in the parent Specification is modified by adapting the central element 6 of the floating rim to receive a steel tyre or a rubber band tyre, Fig. 2.
Patent GB-1024222-A (GB)
Title: Synthetic polymers
Inventor: PHILLIPS LESLIE NATHAN
IPC: C08G61/00
Filed: 1961-07-10
Abstract: Polymers containing aromatic nuclei are cross-linked by reaction with an aralkyl halide comprising at least two halogenomethyl groups (other than fluoromethyl groups) each attached to an aromatic nucleus, to eliminate hydrogen halide whereby an intractable, crosslinked polymer is produced with the remaining part of the aralkyl halide cross-linked directly between aromatic nuclei in the polymer. Polymers may be obtained in two stages by first partially polymerizing a monomer containing an aromatic nucleus with the aralkyl halide, and then cross-linking the product of the first stage with the same or a different aralkyl halide.  In examples, cross-linked polymers are obtained by reacting p-dichloroxylylene or dichloromethyl mesitylene with a polybenzyl resin obtained from benzyl chloride, 2-phenyl-dibenzothiophene, a polyester obtained from ethylene glycol and terephthallic acid, a silicone resin obtained from diphenyl silane diol, a mixture of terphenyls, octaphenyl cyclotetrasiloxane, ferrocene, dibenzothiophene, phenanthrene, N-triphenyl borazole, B-methyl N - triphenyl borazole, B - phenyl N - triphenyl borazole and triphenylene; in some instances stannic chloride is used as a catalyst. Other polymers mentioned that may be crosslinked are polyphenyls and polystyrenes.ALSO:Fibrous materials, e.g. glass cloth and asbestos fibre mat, are impregnated with polymers containing aromatic nuclei which are then cross-linked by reaction with an aralkyl halide comprising at least two halogenomethyl groups (other than fluoromethyl groups) each attached to an aromatic nucleus.  The materials may be impregnated with a solution containing the polymer and aralkyl halide, and heated to cure the polymer, after evaporation of the solvent.  In examples asbestos felt and glass cloth are impregnated with a polybenzyl resin obtained from benzyl chloride, with octaphenyl cyclotetrasiloxane, with a resin obtained from N-triphenyl borazole and p-dichloroxylylene, and with a resin obtained from triphenylene and p-dichloroxylylene, and the polymers are cross-linked by reaction with p-dichloroxylylene.
Patent GB-502356-A (GB)
Title: Improvements in or relating to cathode ray tube circuit arrangements
IPC: H04N3/185
Filed: 1937-09-14
Abstract: 502,356. Valve generating circuits; converting. FERNSEH AKT.-GES. Sept. 14, 1937, No. 25002. Convention date, Sept. 14, 1936. [Class 40 (v)] [Also in Group XXXV] A cathode-ray tube derives its anode voltage by rectification of the scanning oscillations, the scanning oscillator being arranged to give a fly-back stroke short in duration and of a periodic character, with the object of obtaining a rectified voltage which is large and not greatly dependent on the load presented by the cathoderay tube. The scanning generator may be of the kind employing a valve 4 with its grid and anode circuits coupled to each.other by a transformer 1, a third coil 10 being connected to the scanning-coil 11 of the cathode-ray tube. The anode 7 of the cathode-ray tube 9 is connected to the anode of the valve 4 through a rectifier 5, and the cathode 8 of the tube is connected to the valve cathode, a storage or smoothing condenser 6 being shunted across the tube 9. The high positive voltage impulses arising across the valve 4 during the fly-back charge the condenser 6 and supply anode voltage for the tube. The grid circuit of the tube 4 is rendered oscillatory by arranging that the ratio of the effective grid inductance to the effective grid capacity is less than 4b<4>R<2>, where b is the turns ratio of the transformer and R is the resistance of the cathode-ray tube. The natural period of the grid circuit is less than twice the fly-back time. Air insulated disc coils are used in the transformer 1.
Patent GB-459842-A (GB)
Title: Improvements in and relating to outlet devices or delivery nozzles for apparatus forheating liquids
IPC: B05B7/02
Filed: 1936-09-14
Abstract: 459,842. Nozzles. JUNKERS & CO., GES., 35, Junkersstrasse, Dessau, Anhalt, Germany. Sept. 14, 1936, No. 25009. Convention date, Sept. 17, 1935. [Class 69 (iii)] A nozzle for preventing pulsation in the delivery from water heating apparatus is provided with an annular passage 16, formed by two concentric tubular members 13, 14, which communicates with the atmosphere at the exit end while the upper end of the inner tube opens into the upper part of the device which normally is not filled with water. Hot water is delivered by a pipe 10 opening into a socket 12 inside a hemispherical member 11 to which is attached a conical tapered sleeve 13 having a cylindrical extension. Within the sleeve 13 is a concentric sleeve 14 having spacing ribs 15 bearing against the outer sleeve forming with it an annular passage leading to the atmosphere at 19. The inner sleeve 14 is pressed against the outer by a spring 17 which also serves to guide hot water into the inner passage. Water is delivered through the inner passage while air and steam escape through the passage 19.
Patent GB-294796-A (GB)
Title: Extension tables
IPC: A47B1/06
Filed: 1927-09-22
Abstract: 294,796. Giard, N., and Dupont, A. D. Sept. 22, 1927. Expanding tables. - An expanding table with roller-top inner parts 25 is constructed so that both parts are equally and simultaneously operated by pushing or pulling either end section 21. In the table shown, which consists of two table-top sections 20 on a table-leg frame 13, the end bar 22 of each of the section frames is connected by a longitudinal bar 30 to the inner end 30<a> of the slotted part 25 of the opposite end section. The side beams 23 of the section frames are grooved so as to move on beams 29, which slide also in grooves 18 in the table-leg frame 13. Between the roller-top parts is a narrow central section 16 with arcuate undercut edges. Each part 25 consists of transverse strips on flexible material, and rolls about discs 28 in recesses in the table frame.
Patent GB-974235-A (GB)
Title: Arc-back protection for grid-controlled rectifiers
IPC: H02H7/127
Filed: 1962-07-03
Abstract: 974,235. Converting. BROWN, BOVERI & CO. Ltd. July 3, 1962 [July 5, 1961], No. 25422/62. Heading H2F. In an arrangement for protecting against back-arc in grid controlled rectifiers, premagnetized anode transformers in the anode lead have two secondary windings, one giving a pulse to trigger an electronic switching device when back arcing commences and the other giving a pulse to trigger another electronic switching device when it ceases. In the Figure the transformer 5 has a premagnetizing winding 6 and secondaries 8 and 9. When back arcing occurs a pulse from winding 8 fires the valve 14 which controls the relay 16 having contacts 161, 162, 163. The contacts 161 operate relay 19 which blocks the valve 14 by opening the contacts 191 in series with it, after a time delay. The control circuit 18 supplying the rectifier grid may be arranged to change over to inverted operation during this period. Alternatively the inverted operation may be continued until the fault clears. The contacts 162 operate relay 20 which, after a predetermined delay opens the main A.C. circuit-breaker (not shown) unless the contacts 171 of relay 17 are opened first, which happens if the back arc ceases and valve 15 is fired by a pulse from winding 9. The contacts 163 operate a counter.
Patent GB-1309189-A (GB)
Title: Process for use in the manufacture of rugs or tapestres
IPC: D04G3/02
Filed: 1971-04-19
Abstract: 1309189 Ornamenting; transferring apparatus J CHRETIN and A THOMASSET 19 April 1971 [10 April 1970] 25507/71 Headings B6C and B6G Location marks on the threads forming the meshes of a rug or tapestry canvas are produced as shown in Fig. 1 by applying the canvas 4 to a rigid plate 1 having studs 2 engageable in the mesh of the canvas to correct any deformations or dimensional imperfections in the canvas, and pressing against the thus -connected canvas a sheet 5 perforated to engage on some or all of the studs, this sheet bearing location marks which thus become affixed to the canvas. Sheet 5 may bear a print design or printed pattern indications and may be caused to adhere to the canvas by application of heat and pressure. Pressure may be applied through plate 8 and heating may be carried out by electrical resistances arranged within either of plates 1 or 8. Alternatively heat may be applied by high frequency heating or by an ultra-sonic device. In an alternative method sheet 5 bears printed indications and the printed face of sheet is applied against the canvas so that when the sheet is removed the marks are transferred to the threads of the canvas.
Patent GB-1319972-A (GB)
Title: Apparatus for preserving biodegradable fluid samples
IPC: G01N33/497
Filed: 1970-05-27
Abstract: 1319972 Preserving fluid samples VARIAN ASSOCIATES 27 May 1970 [24 June 1969] 25556/70 Heading A2D [Also in Divisions Bl B8 and Gl] A fluid sample having a volatile organic constituent capable of being degradded by metabolic acivity of micro-organisms is stored for subsequent test in a container which has inside it a surface coated with an anti-microorganism agent. Breath samples containing ethanol may be stored in indium tubes which have an inner coating of biocide, the tubes being cold welded at each end when the sample is taken. A sample is introduced into a gas chromatography column for testing by melting the tube to release its contents into a stream of N 2 /H 2  carrier gas. In other embodiments the container may be a vial or bag and may be of glass or plastics.
Patent GB-242424-A (GB)
Title: Improvements in electrolytic condensers
IPC: H01G9/00
Filed: 1924-10-27
Abstract: 242,424. Dubilier Condenser Co. (1921), Ltd., (Deventer, H. R. van.). Oct. 27,1924. Electrolytic condensers.-The temperature of an electrolytic condenser is controlled by circulating a cooling agent through the electrodes, which are hollow. In the form shown in the Figure, the electrodes consist of cooled pipes 1, 2 which are connected through insulating tubes 16 to pipes 17 leading to a coil 19 in a cooling tank 20. A pump 21 is provided for circulating liquid through the pipe system. The electrodes 1, 2 are immersed in a liquid capable of forming an insulating coating on the electrodes, or the latter may be coated before being placed in the liquid, which then serves to re-form the coating if this becomes ruptured.
Patent GB-1128878-A (GB)
Title: Moulded cable sheath joint
Inventor: MOORE HAYDEN ALBERT
IPC: H02G15/18
Filed: 1967-06-02
Abstract: 1,128,878. Sealing thermoplastic coverings. STANDARD TELEPHONES and CABLES Ltd. 2 June, 1967, No. 25607/67. Heading B5A. [Also in Division H2] A circumferentially extending gap in the outer thermoplastic covering of an article is filled by placing a mould of low thermal conductivity around the article so that at least one channel is defined at the gap by the space between the mould and the article, passing a gas at elevated temperature through the channel via an inlet and outlet port to melt the adjacent thermoplastic material, injecting heated thermoplastics material through the inlet until it passes through the outlet, closing the outlet, maintaining pressure on the injected thermoplastics material while it sets and removing the mould. As shown the article 6 with thermoplastics coverings 2 and 3 has mould 4 surrounding the gap, a groove 5 in the mould easing the flow of gas and thermoplastic material from the inlet port 7 to the diametrically opposite outlet port (not shown); the heated materials passing above and below the pipe. The mould is preferably made of a ceramic material, the heated gas is or contains nitrogen and the inlet port has a changeover valve permitting the ingress of either gas or thermoplastic material. The process may be used for attaching new portions of thermoplastic outer sheath to an electric cable.
Patent GB-1200987-A (GB)
Title: Quaternary compounds of dialkylamino acetic acid esters
Inventor: PECK ROGER FRANCIS
IPC: A23L27/20
Filed: 1968-05-29
Abstract: 1,200,987. Quaternary salts of dialkylamino acetic acid esters. BP CHEMICALS (UK) Ltd. 1 May, 1969 [29 May, 1968], No. 25610/68. Heading C2C. [Also in Division C5] The invention comprises quaternary compounds of dialkylamino acetic acid esters of the formula wherein R 1  represents an alkyl, cycloaliphatic, aralkyl, phenyl or a substituted phenyl group of formula in which R<SP>1</SP> represents an acyclic hydrocarbon residue or halogen and R<SP>II</SP>, R<SP>III</SP>, R<SP>IV</SP> and R<SP>V</SP> represent H or halogen, or R<SP>I</SP> and R<SP>V</SP> represent acyclic hydrocarbon residues and R<SP>II</SP>, R<SP>III</SP> and R<SP>IV</SP> represent H or halogen or R<SP>I</SP> and R<SP>V</SP> and any one of R<SP>II</SP>, R<SP>III</SP> and R<SP>IV</SP> represent acyclic hydrocarbon residues with the remainder being H or halogen; R 2  and R 3  represent alkyl radicals; R 4  represents a benzyl or chloro- or bromo-benzyl group; and A(-) is anion of valency n. In examples, the compounds are prepared by reacting a dialkylamine with a chloro-acetic acid ester and quaternating the product with benzyl chloride.
Patent GB-389020-A (GB)
Title: Process and composition for removing oxides and gases from molten aluminium and aluminium alloys
IPC: C22B21/06
Filed: 1932-09-15
Abstract: A refining-agent for removing oxides and gases from molten aluminium and aluminium alloys comprises one or more liquid chlorides, or a mixture of chlorides at least one of which is liquid, in admixture with an inert absorbent substance other than charcoal, for example kieselguhr.  The liquid chloride may be carbon tetrachloride, and the mixture may comprise also a biflicoride.  The refining agent may be enclosed for use in a container of aluminium or of the aluminium alloy to be refined or of one of the components of the alloy.
Patent GB-368271-A (GB)
Title: Manufacture of cellulose derivatives
IPC: C08B13/00
Filed: 1930-08-28
Abstract: Primary oxyalkyl cellulose esters, particularly acetates, which are soluble in acetone and have a low sensitivity to water, are obtained by treating alkali cellulose with an alkylene oxide at a temperature below 30 DEG  C. and subjecting the product so obtained to a known acid or alkaline esterification process.  Preferably the degree of esterification should be low, e.g. one oxyalkyl for each 2, 3, or 4 C6H10O5 groups.  In examples, alpha-fibre is treated with caustic soda and the resulting alkali-celluloses are treated with ethylene oxide, the oxyethyl celluloses being acetylated by means of (a) acetic anhydride together with glacial acetic acid and zinc chloride, or (b) acetyl chloride together with pyridine and chlorobenzene; and alkali-cellulose produced by treating linters with caustic soda is treated with propylene oxide and the oxypropyl cellulose is acetylated by means of acetic anhydride, glacial acetic acid and phosphoric acid.  Anhydrides or halides of all saturated or unsaturated organic acids may be used for esterification.  The products are particularly suitable for making films.
Patent GB-141622-A (GB)
Title: Improvements in or relating to the lubrication of internal combustion engines
IPC: F01M9/08
Filed: 1919-10-22
Abstract: 141,622. Lloyd, W. J. Oct. 22, 1919. Force-feed lubricators. - A lubricating devicefor internal-combustion engines gives an automatic force-feed by the action of the varying exhaust-pipe pressure on a flexible diaphragm contained in an oil chamber, operating a deliveryvalve. Means for opening the valve by hand and for heating the oil are provided. Oil from a tank flows along a pipe d through a non-return valve to a pipe b attached to a chamber a containing a flexible diaphragm h A plate e<1> bearing on the under-surface of the diaphragm is connected by a stem e<2> to a spring-pressed delivery-valve c through which oil is forced in small quantities by movements of the diaphragm. The diaphragm may have a central hole i allowing the exhaust gases to pass into the pipe b to place the oil under direct pressure. A pipe l connects the chamber a to the engine exhaust, and a branch pipe l<1> leads to a jacket n for heating the oil. The valve e, which has an adjustable stop g, leads by a pipe p and a sight-feed p<2> to the crank case or part to be lubricated. A spring-supported push-rod k enables tho diaphragm and valve to be depressed by hand.
Patent GB-1157047-A (GB)
Title: Method of Forming Intricate Passages in Metal
IPC: B21C37/15
Filed: 1967-06-05
Abstract: 1,157,047. Making minute passages in metal; welding by pressure. BENDIX CORP. 5 June, 1967 [1 July, 1966], No. 25870/67. Headings B3A and B3R. Intricate passages are formed in stainless steel, by placing nickel between two parts of the stainless steel, diffusion bonding them together, diffusion bonding a support made of stainless steel to said two parts and removing the nickel by chemical means, e.g. leaching with boiling nitric acid. Alternatively, wires of stainless steel and nickel may be twisted and diffusion bonded together and the nickel thereafter chemically removed preferably by boiling nitric acid. In a preferred embodiment alternate plates (22), (24), Fig. 1 (not shown), of nickel and stainless steel are bonded together at 2050‹ F. to 2175‹ F., e.g. 2150‹ F., for ten to thirty minutes under 50 p.s.i. in a hydrogen atmosphere. The stack is machined, lapped and polished and side panels 26 of stainless steel bonded thereto at 2050‹ to 2175‹ F., e.g. 2150‹ F. for twenty minutes. The nickel layers are leached out with boiling nitric acid to produce a flow straightener 28 having passages 30. The steel and nickel plates may have copper flashings on both sides to facilitate bonding. It is possible to electroplate patterns of nickel on the stainless steel to produce intricate passages.
Patent GB-661011-A (GB)
Title: Improvements in a planetary milling machine for executing a taper cut
IPC: B23G1/32
Filed: 1948-10-05
Abstract: 661,011. Thread-milling machines. PLAN-O-MILL CORPORATION. Oct. 5, 1948 [Nov. 13, 1947], No. 25929/48. Class 83 (iii). A planetary milling-machine for cutting a taper thread comprises relatively eccentric inner and outer rotatable quills 30, 40, Figs. 9 and 10, a cutter spindle S eccentrically mounted in the inner quill 30, end-plates 32, 42 on the two quills, a rotatable element 90 on the plate 42 of the outer quill and connected through a gear train 110 ... 116 with a fixed ring-gear 100 whereby rotation of the outer quill relatively to the latter causes gradual adjustment in the relative angular dispositions of the two quills so as to provide a radial feed proportional to the axial feed. Drive between the two quills is provided by the coaction of one of two dogs 34, 36 (according to the direction of rotation) adjustably mounted in the end-plate 32 of the quill 30 with a dog 44 carried by a plate 80 which is rotatably mounted on the end-plate 32 and has a rearward extension 70 passing through a slot 71 in the end-plate 42. The rear end of the extension 70 engages a slot. in a lead-screw 60 which is positioned around the quill 40 and engages a nut 62 fastened to the machine frame 50. The plate 80 carries a pair of rollers 86, 88 co-operating with a cam 90 on a shaft 92 on the end-plate 42. The cam 90 is rotated in order to adjust the relative positions of the two quills by the gear-train 110 . . . 116 which is disposed in a housing 105 and co-operates with the ring gear 100 on the outside of the nut 62. When the inner quill 30 starts to rotate so as to bring the cutter to the work, one of the dogs 34, 36 contacts the dog 44 which rotates the outer quill 40. The lead-screw 60 then moves the two quills in pitch relation to the work, and, at the same time, the gear-train 110-116 rotates the cam 90 which is so shaped that, acting upon the appropriate roller 86, 88 and through the plate 80, it moves the cutter radially to the desired extent. A key 122 is positioned on the gear housing 105 on the appropriate side of the cam 90 to prevent contact of the latter with the rollers 86, 88 in the reverse movement of the quills. In the modification shown in Fig. 12, a crank-rod 260 is connected between an extension 262 on the rotatable plate 180 (corresponding to the plate 80 above) carrying the dog 144 and a slide 252 fixed in adjustable position in a slot 251 in a crank-wheel 250 on the end-plate 142 of the outer quill. The shaft of the crank-wheel is connected through a gear-train 211 ... 220 with a ring gear 200 on the lead-screw nut. When the inner quill is rotated to cause either dog 134, 136 to engage the dog 144, the crankrod 260 correspondingly turns the outer quill and starts the gear train in operation, thereby rotating the crank-wheel 250. Depending upon the position of the point P of connection of the crank-rod 260 to the slide 252 (and this can be adjusted by moving the slide 252 by a screw 254), the crank-rod changes the relative position of the two quills.