baber/WOPTO huggingface dataset:
Patent GB-865267-A (GB)
Title: Improvements in coating compositions containing cellulose derivatives
IPC: C09D101/08
Filed: 1959-03-09
Abstract: A coating composition comprises a solution in an organic solvent of a cellulose derivative, an epoxidized material having at least one 1-, 2-epoxide group per molecule, and a urea-formaldehyde or triazine-formaldehyde resin as a curing agent for the epoxidized material, the proportion of the epoxidized material being 50-100%, and that of the curing agent 8-50%, of the weight of the cellulose derivative.  Specified cellulose derivatives include nitrocellulose, cellulose acetate-butyrate and ethyl cellulose.  Two or more cellulose derivatives, or a cellulose derivative mixed with a minor proportion of a non-cellulosic film-former, e.g. an alkyd resin, may be used.  The epoxidized material may be a synthetic epoxide resin of molecular weight no greater than 1,000, or an epoxidized natural or synthetic oil, e.g. the epoxide of the acetylated triglyceride of castor oil and the epoxide of the triglyceride of soya bean oil.  The curing agent may be an alkanol-modified urea- or triazine-formaldehyde resin, especially a propanol- or butanol-modified resin, or may be a modified melamine-formaldehyde or benzoguanamine-formaldehyde resin.  A catalyst for the curing reaction of the urea- or triazine-formaldehyde resin with the epoxidized material may be present in amount 0,8-15% of the weight of the cellulose derivative, such catalyst being added by the consumer shortly before the lacquer is used.  Specified catalysts include lower alkyl acid orthophosphates and citric acid.  Curing of the applied coating may be effected at an elevated temperature, preferred conditions comprising heating at 50 DEG -125 DEG C. for 1/2 -8 hours. A cross-linking agent for the cellulose derivative may be incorporated, e.g. titanium ethyl acetoacetate, in which case an acid gel inhibitor may also be used, e.g. pyromellitic acid.  Conventional plasticizers may be used those specified including dibutyl phthalate, tricresoyl phosphate, di-(2-ethyl-hexyl)phthalate, dibutyl sebacate, castor oil, modified castor oil, and camphor.  Specified solvents include ethanol, toluene and xylene, methyl ethyl ketone and methyl isobutyl ketone, and ethylene glycol monobutyl ether. Conventional compounding ingredients may also be present e.g. dyes, pigments, stabilizers, anti-settling agents and dispersion aids. Specifications 483,399, 565,707 and U.S.A. Specifications 2,201,891, 2,444,333, 2,582,985, 2,680,108, 2,686,133 and 2,751,316 are referred to.
Patent GB-555145-A (GB)
Title: Generative gear and like cutting machines
IPC: B23F1/02
Filed: 1941-12-01
Abstract: 555,145. Gear cutting. FELLOWS GEAR SHAPER CO. Dec. 1, 1941, No. 8260/43. Convention date, Dec. 20, 1940. Drawings to Specification. Divided out of 555,120. [Class 83 (iii)] A machine for generating gears and like curved elements wherein a carrier supporting the work spindle is moved to roll the work past the cutter, has indexing means comprising a notched plate secured to the spindle which is subjected to constantly applied torque and is normally restrained by a pawl mounted on a carrier, the pawl being disengaged to permit indexing to occur at a predetermined point in the rolling movement. The machine embodiment is the same as that described in Specification 555,120 which is referred to.
Patent GB-115924-A (GB)
Title: Improvements in the Preparation of Catalytic Material employed for the Promotion of Synthetic Chemical Reactions.
Inventor: LANE HOWARD
IPC: C11C3/12
Filed: 1917-06-11
Abstract: 115,924. Lane, H. June 11, 1917. Chemical manufacture, furnaces for; charges. agitating.-Apparatus for use in the preparation of catalytic material, such as reduced nickel, comprises an air-tight pan a, b having an outlet n depending into a receptacle o containing a coating material, an operable rake being provided which can cause the material under treatment to travel away from the outlet, but which can also be reversed to discharge the material through the outlet. The pan may be provided with a trapped hopper q, and the reducing gas may be supplied through the pipe w. Gas and vapour discharges are led through the pipe t to a condenser u, and the excess gas, freed from moisture, is again introduced in the pan by the injector action of fresh reducing gas issuing from the nozzle v. 'J he reversible rake has helical blades each carrying teeth j which are loosely mounted so that they may follow any irregularities in the surface of the pan.
Patent GB-676150-A (GB)
Title: Photographic stripping film
IPC: G03C1/805
Filed: 1950-04-03
Abstract: 676,150. Photographic stripping film. KODAK, Ltd. April 3, 1950 [April 1, 1949], No. 8315/50. Class 98 (ii). A photographic stripping film comprises a wellesterified cellulose organic acid ester temporary support having a hydrolysed surface, a cellulose ester permanent support attached to the hydrolysed surface of the temporary support with a water-soluble adhesive, and a light - sensitive emulsion layer inseparably attached to the permanent support. In example 1, the temporary support 10 is of substantially fully esterified cellulose ester (e.g. cellulose triacetate, acetate-butyrate, acetatepropionate, or propionate) which has been superficially hydrolysed, preferably only on one surface, by the application of an aqueous-methanol solution of sodium hydroxide containing a spreading agent, to provide the hydrolysed layer 11. To this hydrolysed surface is applied a very thin stripping layer 12 of water-soluble cellulose ester (e.g. cellulose acetate), and after drying, a permanent support 13 of cellulose acetatebutyrate (or acetate-propionate or acetate) is applied in one or more applications. A thin substratum layer 14 of a mixture of gelatin and cellulose nitrate is applied to the layer 13, and an anti-curling, anti-halation layer of gelatin containing a dye and a spreading agent applied to the rear of the support 10, a substratum layer of gelatin and cellulose nitrate having been first applied. The two substratum layers may contain hydrated chromium chloride as a hardener. A light-sensitive silver halide emulsion layer 15 is then coated over the layer 14. Adhesion between the permanent support 13 and the stripping layer 12 may be improved either by incorporating glue or gelatin in the coating formula for the layer 12 or by incorporating cellulose acid acetate butyrate (obtained either by esterification of oxidized cellulose or by the oxidation of cellulose acetate butyrate) in the coating formula for the layer 13. In example 2, a cellulose nitrate layer to form the permanent support is coated directly on to the hydrolysed surface layer of the temporary support (the coating formula for this cellulose nitrate layer may contain a small amount of gelatin or a small amount of gelatin or glue may be added to the hydrolysing solution used for forming the hydrolysed surface layer), a gelatin substratum layer is applied to the permanent support, a substratum layer and an anti-curling, anti-halation layer may optionally be applied to the rear of the temporary support as described in example 1, and a light-sensitive emulsion layer is applied over the substratum layer on the permanent support. Specifications 483,609, 510,705, [Group IV], and 555,383 are referred to.
Patent GB-1305458-A (GB)
IPC: C07D401/06
Filed: 1970-02-20
Abstract: 1305458 Indole derivatives AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 20 Feb 1970 [26 Feb 1969 19 Feb 1970] 8330/70 Heading C2C Indole derivatives of the formula wherein R 1  and R 2  each are H, optionally substituted alkyl, aralkyl or aryl, or R 1  and R 2  together with the nitrogen atom to which they are attached form a 5 to 7 membered heterocyclic ring, and X and Y each are H, C 1-5  alkyl, halogen C 1-5  alkoxy, CF 3 , OH, NH 2  carboxylic or sulphonic acid groups or their functional derivatives, the compounds being novel provided that X and Y are not both H except when R 1  and R 2  together form a group of the formula (CH 2 ) n  where n is 4 to 6, are prepared by the hydrogenolysis of 2-(2-aminophenyl)-2- cyanoacetic acid amides of the formula which are obtained by the reduction of the corresponding 2 - (2 - nitrophenyl) - 2 - cyanoacetic acid amides, resulting from the reaction of the appropriate 2-cyanoacetic acid amides with the corresponding 2-nitrohalobenzene compounds. Pharmaceutical compositions, suitable for oral, parenteral or rectal administration, contain the above novel indole derivatives together with pharmaceutically acceptable diluents. The compounds possess ocytocic, anaesthetic, antiinflammatory, hypotensive and tranquillizing properties. Herbicidal compositions, contain the above novel compounds in association with dispersing or spreading agents.
Patent GB-1377324-A (GB)
Title: Benzofuranyl-aminoalkyl-ketones process for their preparation and  their use in medicaments for treating hyperuricemia
IPC: C07D307/81
Filed: 1973-02-21
Abstract: 1377324 Benzofuranyl basic alkyl ketones PRODUITS CHIMIQUES UGINE KUHLMANN 21 Feb 1973 [21 Feb 1972] 8420/73 Heading C2C Novel compounds of formula wherein R is halogen, alkyl, alkoxy, alkenyloxy, alkynyloxy, carboxyalkoxy, alkoxy-carbonylalkoxy, hydroxy or nitro, R<SP>1</SP> and R<SP>11</SP> each represent a C 1-5  alkyl group or together with the N atom form a saturated hyeterocyclic ring optionally containing a further hetero atom which may be alkyl substituted and salts thereof, are prepared by reacting formaldehyde or a formaldehyde polymer with the amine HNR<SP>1</SP>R<SP>11</SP> and a 5-R-substituted-2-acetylbenzofuran optionally with salt formation. 2-Acetyl-5-R-benzofurans are prepared by reacting a 5-R-2-hydroxybenzaldehyde, K 2 CO 3  and monochloroacetone or for the 5-hydroxy compound, hydrolysing the 5-methoxy compound and optionally converting into another 5-ether. Pharmaceutical compositions in conventional forms for treatment of hypernicemia comprise an above novel compound and a carrier therefor
Patent GB-384876-A (GB)
Title: Improvements in signalling apparatus for motor vehicles
IPC: B60Q1/34
Filed: 1932-03-22
Abstract: 384,876. Road-traffic signals on vehicles. TAYLOR, E., 18, York Street, Hulme, Manchester. March 22, 1932, No. 8448. [Class 118. (ii).] A signalling device mounted on the roof of a motor vehicle comprises a closed case C containing a shaft D carrying a semaphore arm G which can be rotated by a shaft E journalled in a plate F fixed to the dashboard B. The shaft E is fixed in various positions by a spring pin H which engages in holes in the plate F. The arm G may be fitted with coloured glass panels g and an electric lamp g<1> and may carry a balance weight W at its lower end. Specifications 243,240 and 272,089, [both in Class 118 (ii), Signals], are referred to.
Patent GB-326355-A (GB)
Title: Improvements in and relating to coin-freed weighing machines
IPC: G07F17/04
Filed: 1929-03-16
Abstract: 326,355. Matti, G. March 16, 1929. Weighing-apparatus.-Coin-freed weighing-machines or other coin-freed machines such as those fitted with a horizontally sliding drawer are provided with means for preventing multiple actuation after the insertion of a single coin comprising toothed wheels on the spindle of the indicating pointer and rocking catch devices adapted to engage the wheels and to lock and release them as required. As adapted for a weighing machine, the indicating pointer is mounted o a spindle d<1> carrying a pinion d<2> gearing with a rack d<3> which moves downwards proportionately to the load on the platform so that the pointer indicates the required weight. When a coin is inserted into the machine it strikes the end g<5> of a pivoted beam g<4>, carrying a locking arm g<7> normally engaging a wheel g on the spindle d', so that the arm g' is raised and the wheel g freed. An arm g<9> carrying a pin g<10> and mounted on the beam is also raised thus freeing the pin from a recess h<2> in a pivoted catch h<1> carrying at its lower end a second catch h<3> which, as the catch h<1> tilts under the influence of the weighted extension j, contacts with the wheel g. Any reverse rotation of the wheel g caused, for example, by a heavier person replacing a lighter one on the platform causes the catch h<3> to engage the wheel g and the catch h' is thereby rocked so that the pin g<10> drops into the recess h<2> as the beam g<4> returns to its normal position and causes the arm g' to engage the wheel g, thus allowing the wheel to return to zero but preventing any further movement in the opposite direction. Delivery of articles stored in piles.-As applied to a machine with a horizontally sliding drawer the rack, which may be horizontal is operatively connected to the drawer,
Patent GB-127892-A (GB)
Title: Improvements in or relating to Ordnance Breech Mechanism.
Inventor: DAWSON ARTHUR TREVOR
IPC: F41A3/08
Filed: 1917-06-15
Abstract: 127,892. Dawson, Sir A. T., and Buckham, Sir G. T. June 15, 1917. Ordnance b r e e c h mechanism. - Relates to screw mechanism of the swinging - carrier type, in which the breech-actuating handlever is pivoted on the carrier to move about an axis parallel to the carrier hinge, and has a pin engaging a slot in t h e breech - screw. According to the invention, the pin is so arranged in relation to the pivot of the hand-lever that the pin passes over the dead-point, (i.e. in front of a transverse plane through the pivot of the hand-lever), to lock the mechanism in closed position. The invention is particularly applicable to small-calibre ordnance in which the breech-screw engages threads on the outside of the barrel. Fig. 2 shows, in plan, the breech-screw A<1> rotatably mounted on a. carrier C hinged at C' to the gun and engaging threads on the outside of the barrel A. The screw is rotated for unlocking by a lever B pivoted at b to the carrier and having a spherical projection b<2> engaging a longitudinal slot a<2> in a rearward extension of the screw. After the unlocking movement, continued motion of the lever brings the projection b<2> into engagement with a stop c<x> on the carrier to swing the carrier and block aside about the hinge C', movement of the block relatively to the carrier being prevented by the engagement of a lug ax on the block beneath a projection a on the fixed part of the carrier hinge.
Patent GB-100788-A (GB)
IPC: H02P9/22
Filed: 1916-06-20
Abstract: 100,788. Akt.- Ges. Brown, Boveri, et Cie. June 25, 1915, [Convention date]. Regulation, automatic systems and apparatus for.-The pressure in a carbon-pile regulator is transmitted by lever mechanism consisting of a curved sector rolled over a curved lever by the regulating electro-magnet. In the arrangement shown in Fig. 1, the curved lever h applies the pressure to the pile, and its position is varied by the rolling movement of the sector s connected by a spring f to the armature of the magnet m. Two sectors may be employed, and the magnet may have a rectilinear movement, the pressure components in the direction of movement being balanced by springs. The pressure upon the pile may be obtained by a spring, and, as shown in Fig. 4, the pivot may be placed at the centre of the lever h.
Patent GB-548438-A (GB)
Title: Improvements in and relating to operating mechanism for circuit breakers
IPC: H01H33/32
Filed: 1941-07-10
Abstract: 548,438. Automatic circuit-breakers. BRITISH THOMSON-HOUSTON CO., Ltd. July 10, 1941. No. 8737. Convention date, July 11, 1940. [Class 38 (v)] The operating rod 11 of a circuit-breaker is closed by a pneumatically-moved lever 8 and held by latch 13 adapted to be tripped by a lever 23 on energization of a trip relay 21 and fault relay 17. The tripping operation also includes opening of a valve 33 whereby the space in the operating cylinder 5 below piston 4 is exhausted to atmosphere and the piston 4 and rod 11 allowed to drop at once to open position if closure on to a fault occurs. The trip circuit includes contacts 22 which are open when the breaker is open. The closing solenoid circuit includes a pressure-switch 27 and limit-switch 28 in addition to the coil 26 operating the valve 29. A cavity 29' in the latter leads to a port 30' to allow the cylinder 5 to exhaust normally, this port being closed by the left-hand part of the valve in its operative position.
Patent GB-435412-A (GB)
Title: Improved manufacture of dry preparations capable of dispersion in water
IPC: D06M13/02
Filed: 1934-03-20
Abstract: Aqueous dispersions of fusible lyophobe substances such as paraffin wax, other waxes, or fats, employed in the textile industry and having a protective colloid content less than 50 per cent of the lyophobe substance, are reduced to powders capable of redispersion by stirring in water by drying in atomized condition without previous concentration.  Examples: (1) to a heated solution containing 63,5 parts of water, 2 parts of boric acid and 4,5 parts of gelatine 10 parts of aluminium sulphate are added followed by 20 parts of molten paraffin wax (m.p. 52--53 DEG  C.), and the mixture homogenized; the product is preferably diluted with 20--30 parts of warm water and is then dried in a Krause atomizing dryer to form a readily dispersable powder; (2) 20 parts of molten paraffin wax are poured into a warm solution containing 68 parts of water, 4 parts of sodium tetraborate, 1 part of boric acid, 4,5 parts of gelatine and 2,5 parts of fishglue and the mixture homogenized, preferably diluted, and dried as in (1); (3) to form a dilute dispersion from the products of (1) or (2) 2--40 parts of the powder are strewn with stirring into 1000 parts of water at 70 DEG  C.; (4) 20 parts of powder are stirred into 30 parts of water at 40--45 DEG  C., and the mixture heated to 65--70 DEG  C., and allowed to set, preferably with cooling, into a gel capable of further dispersion in water at 40--45 DEG  C.
Patent GB-308220-A (GB)
Title: Process for the manufacture of phenolic compounds
IPC: C07C37/02
Filed: 1929-03-18
Abstract: 308,220. I. G. Fasbenindustrie Akt.- Ges. March 19, 1928, [Convention date]. addition to 288,308. Phenols.-The process of the parent Specification whereby phenol is prepared by passing chlorbenzene with steam over heated active silica gel is extended to the preparation of phenols in general. Further, the yields are increased by adding to the silica gel certain metals or metallic oxides such as copper. nickel, cobalt or their oxides or nitrates, Thus (i) phenol in 85 per cent yield is prepared by passing chlorbenzene with steam at 400‹ C. over activated silica gel containing 5 per cent of copper oxide, (ii) p:cresol in 80 per cent yield is prepared by passing pchlortoluene with steam at 380‹ C. over activated silica gel containing 3 per cent of finely divided nickel
Patent GB-545073-A (GB)
Title: Improvements in systems for supplying alternating current from a direct current source particularly for use in railway vehicles
IPC: H02K47/04
Filed: 1941-07-11
Abstract: 545,073. Electricity supply ; motor-generators. STONE & CO., Ltd., J. July 11, 1941, No. 8766. Convention date, Dec. 6, 1940. [Classes 35 and 38 (iv)] The armature current in a D.C. motor 20 passes through an auxiliary field winding 27 of an alternator 24 whereby its normal output voltage is rapidly reached, and the effect of load variations on the output voltage is minimized. The alternator field structure is normally unsaturated. A transformer 72 and rectifier 70 provide the normal excitation of the alternator through a resistance 36 of zero temperature coefficient. The load current energizes through a transformer and rectifier an auxiliary field winding 51 on the motor whereby loss of speed and fall in voltage and frequency due to load is corrected. The motor has a series field winding 19 to assist starting and main shunt excitation coils 17 in series with resistances 42 which decrease with increased voltage so that speed changes due to variation in supply voltage are minimized ; the resistances 42 also have a negative temperature coefficient and compensate for resistance changes in the field winding 17. This converting unit may be used in a railway vehicle comprising a battery 12 charged from an axledriven generator 2 and enables fluorescent lamps 32 to be illuminated rapidly and steadily after the closure of a switch 9. Specification 545,072 is referred to.
Patent GB-875571-A (GB)
Title: Copying attachment for a machine tool
Inventor: HIRVONEN ERIC JOHN
IPC: B23Q35/18
Filed: 1959-03-13
Abstract: 875,571. Copy-turning. LELAND-GIFFORD CO. March 13,1959, No. 8851/59. Class 83(3). A copying attachment for a machine tool comprises a tool slide 30 mounted on a base 26 and carrying a tracer 38, a pump and motor M, controlled by a switch 204, and an hydraulic control circuit. The attachment is angularly adjustable on a lathe cross-slide 28 and the wooden or other template 22 is mounted on detachable brackets 18, 24. The base 26 carries a piston rod 130, co-operating with a cylinder 126 on the slide 30. The detachable tracer tip 38 is mounted on a rod 42 guided by rollers 47, 45 on, adjustable eccentric bushes, one of the rollers engaging a flat 43 on the rod to prevent rotation. The rod 42 can be adjusted by micrometer means 48 to set the tip 38 in correct relation to the template and is biased towards the valve 66 by a spring 56, there being a stronger spring 70 to hold the tip against the template. A hand lever 82 can swing a yoke 80 to move - the valve 66 to a rapid advance, a rapid retract, or a copying position, the yoke being held in position by a spring latch 90. The yoke is automatically swung to copying position when the tip contacts the work on a rapid advance movement. When the valve 66 is moved to the right, Fig. 23, the passage 140 is opened to increase the pressure therein causing a rise in pressure on the side B of the piston 128 causing the slide 30 to be retracted. At the same time, the pressure on the side T is reduced by movement of a valve 153 due to the increased pressure in a line 148, the valve movement decreasing the size of a pressure inlet TC. A shuttle valve D allows pressure to close a pressure-regulating valve C when a high pressure is required. A relief valve G is opened by a pin 190 when the slide 30 reaches its withdrawn position. The forward limit of feed of the slide 30 is determined by a micrometer screw adjustment 198. A rod 208 carries an adjustable stop which, when the tool is advanced rapidly towards the work, can operate a plunger to swing the lever 82 and bring in the feed rate of movement controlled by a needle valve F. Preceding the copying tool 136, which may be a thread-chaser, is a tool 108 associated with trailing adjustable roller steadies 104.