baber/WOPTO huggingface dataset:
Patent GB-826262-A (GB)
Title: Improvements in the stabilisation of polymers
IPC: C08F2/00
Filed: 1956-11-07
Abstract: Dianils, which may be used to stabilize hydrocarbon polymers, have the formula <FORM:0826262/IV (b)/1> in which R1 and R2 represent hydrogen, alky radicals or aryl radicals, or together with the two bridging C atoms form a carbocyclic group, the total number of carbon atoms in the two radicals being not more than 12, and R3, R4, R5 and R6 represent hydrogen or alkyl radicals with a maximum of 12 carbon atoms, the total number of carbon atoms present in the radicals R1-R6 being between 2 and 32.  These dianils which may or may not be symmetrical may be made by condensing 1,2-dioxo compounds with ortho-aminophenols.  As 1,2-dioxo compounds there may be used glyoxal, methyl glyoxal, hexane-diones, diacetyl, benzil and cyclic diketones based on cyclohexane-dione and cyclopentane-dione.  As ortho-aminophenols there may be used ortho-aminophenol itself or the latter substituted by 1 or 2 alkyl radicals, for example t-butyl or hexyl radicals.ALSO:Polymers of polymerizable hydrocarbons are stabilized by incorporating a dianil of the formula <FORM:0826262/IV (a)/1> in which R1 and R2 represent hydrogen, alkyl radicals or aryl radicals the total number of carbon atoms in the two radicals being not more than 12 and R3, R4, R5 and R6 represent hydrogen or alkyl radicals with a maximum of 12 carbon atoms, the total number of carbon atoms present in the radicals R1-R6 being between 2 and 32. The polymers may be the polymers or copolymers of ethylene, isobutylene, styrene, butadiene, isoprene, e.g. low- and high-pressure polyethylenes and butadiene-styrene copolymer.  The anils which may or may not be symmetrical are preferably used in amounts of 0.001 to 1.0% of the polymer and may be obtained by condensation of 1,2-dioxo compounds with ortho-aminophenols.  The 1,2-dioxo compound may be glyoxal, methyglyoxal, hexanedione, diacetyl, benzil or cyclic diketones based on cyclohexane-dione and cyclopentanedione.
Patent GB-652743-A (GB)
Title: Improvements in and relating to the electrolytic deposition of protective coatings on aluminium and its alloys
IPC: C25D11/08
Filed: 1947-12-23
Abstract: 652,743. Electrolytic surface treatment of aluminium and its alloys. ANOX AKT.-GES. Dec. 23, 1947, No. 33990. Convention date, Oct. 4, 1939. [Class 41] In a process for the electrolytic deposition of opaque layers on aluminium and its alloys the electrolyte contains one or more chromic salts of zinc and/or magnesium and sufficient chromic acid to maintain the salts in solution, the salts being such that the metal from which they are formed does not enter into the composition of the deposited layer and the layer is more opaque and more heat resistant than that which is formed under the same operating conditions, but in the absence of the zinc and/or magnesium salts. The electrolyte may contain for example from 0.5 to 20 per cent of a zinc or magnesium salt. The process may be carried out at a voltage of from 10 to 30 volts, a current density of 1.8 to 2.5 amps. per sq. dcm., and a temperature of 20 to 80 C. Alternating or continuous current may be used.
Patent GB-780204-A (GB)
Title: Improvements in swaging dies
Inventor: STELL JOHN ERNEST
IPC: B21J13/02
Filed: 1954-11-25
Abstract: 780,204. Forging. NORTON & CO., Ltd., Sir J. F. Dec. 14, 1955 [Nov. 25, 1954], No. 34162/54. Class 83 (4). A set of swaging die segments f, g, h, i, for use in a stationary head type of swaging machine have adjacent faces interconnected by tongues j in one die face fitting in corresponding slots k in the adjacent die face whereby no continuous gap in one plane is left between the segments and hence no fins will be formed on the swaged bar or tube which may be of round, hexagonal or rectangular cross-section. The dies may also be used for forming tag ends on bars to be drawn.
Patent GB-888205-A (GB)
Title: Improvements in and relating to filter elements
Inventor: WHITCOMBE CHRISTOPHER JOHN
IPC: B01D46/52
Filed: 1959-10-09
Abstract: 888,205. Filter elements. AUTOMOTIVE PRODUCTS CO. Ltd. Oct. 10, 1960 [Oct. 9, 1959], No. 34306/59. Class 46. A filter element constructed from a blank consisting of a strip of paper or the like, which is pleated by reverse-folding it transversely and formed into an annulus with the pleats extending radially and axially, has ribs or corrugations or the like so formed (e.g. oblique to the edges of the original strip) that the ribs or corrugations on opposite faces of adjacent pleats cross one another at an angle. The Figure shows a portion of pleated strip.
Patent GB-1273053-A (GB)
Title: Improved internal combustion engine
Inventor: GOODACRE CHARLES LINDSAY
IPC: F02B19/08
Filed: 1969-07-08
Abstract: 1,273,053. Combustion chambers,fuel injection spark ignition engines. C. L. GOODACRE. June 30, 1970 [July 8, 1969], No.34368/69. Heading F1B. An I.C. engine comprises means for admitting air into a cylinder for compression by a piston, a fuel injector injecting fuel into a substantially spherical combustion chamber which is external to the cylinder, a transfer passage and ignition means so arranged that the moment ignition occurs the transfer passage is substantially closed by the piston so that combustion occurs substantially completely outside the cylinder. Air drawn into cylinder 8, Fig. 2 through valve 6 as transferred to the combustion chamber 14 through a tangential transfer passage 15, Fig. 3 during the compression stroke. Fuel is injected into the air swirl and ignited by a spark-plug 17 when the piston is at t.d.c. The combustion chamber 14, has a member 20, e.g. of metal, sintered ceramic with beryllum or plastics, providing a surface upon which the injected fuel burns at normal running temperatures. A further combustion chamber and transfer passage may be provided.
Patent GB-335432-A (GB)
Title: Process of preparing multi-colour motion pictures
IPC: G03B33/00
Filed: 1929-11-11
Abstract: 335,432. I. G. Farbenindustrie Akt.- Ges. Nov. 12, 1928, [Convention date]. Colour kinematography. - Component colourrecord pictures of smaller size than 19 by 25 mm., and intended for additive synthesis, are taken in recurring sequence upon a narrow film of less than 35 mm. width carrying a high-speed panchromatic emulsion of the reversal type, and the pictures are developed as positives by the silver reversal process. The emulsion referred to contains a mixture of coarse and fine grains of silver bromide, of which the highly-sensitive coarse grains are chiefly affected during the camera exposure, while the less-sensitive fine grains are affected during the second or reversal exposure. The known narrow films of 16 mm. width may be used.
Patent GB-396600-A (GB)
Title: Improvements in conveyors
IPC: B65G65/00
Filed: 1932-12-05
Abstract: 396,600. Driving-gear for self-propelled machines. FULLER CO., Catasauqua, Pennsylvania, U.S.A.-(Assignees of Morrow, J. H. ; Hokendauqua, Pennsylvania, U.S.A.) Dec. 5, 1932, No. 34436. Convention date, Jan. 7. [Class 79 (ii).] In conveying-apparatus for finely divided materials of the kind described in Specification 317,403, [Class 78 (i), Conveyers &c.], material is fed from bulk supply into the open end of the casing 1 containing the impeller screw 10 by a perforated disc 5, Fig. 1, the screw and disc being driven at relatively high and low speeds, respectively, by a motor 30. The motor shaft is connected by gears 36, 41, 43 to a shaft 44 which is connected by a flexible coupling 47 to a countershaft 48, Fig. 7, carrying a worm gear 57. The worm wheel 58, with which the gear 57 meshes, turns freely on a shaft 60 and carries two sets of three triple planetary gears 65, the arrangement being such that a set is arranged on each side of the wheel. The central teeth of the gears 65 on the left-hand side, Fig. 8, of the wheel 58 mesh with sun gear teeth 69 on one end of the bushing 67 of a reversing clutch drum 68. An inner row of teeth 70 mesh with a driven gear 71 fixed to the shaft 61, and an outer row of teeth 77 mesh with a sun gear 76 secured to a drum 75. When the drum 68 is held stationary by a brake band 90, the shaft 61 will be driven in one direction, and will be driven in the opposite direction when the drum 75 is held. The shaft 60 is driven similarly by the gears on the other side of the worm wheel 58. Each shaft carries double sprockets 79 which are connected by double chains to sprockets 83 keyed on the hubs of the road wheels 86, 87. The wheel 86 is arranged slightly forward of the wheel 87 to prevent the machine from turning in a direction opposite to the direction of rotation of the disc 5. The bands 90 for the drums 68, 75 are taken off by springs 96, Fig. 7, and applied by the action of cams 101 on bolts 94. Arms 104 on the cams are connected by links 105, 112 to arms 108, 108<1> on a sleeve provided with an actuating arm 111. A similar arm 115 controls the driving mechanism for the wheel 87. The feed disc 5 is secured to a flanged sleeve 134, Fig. 6, which is fixed to a shaft 127 having a worm wheel 126 secured to its upper end. The gear 126 is driven by a worm 125 which is connected by a universal joint to a shaft 122. A universal joint 123 connects the shaft 122 to the shaft 48. In a modification the disc 5 is driven independently by a small motor.
Patent GB-772895-A (GB)
Title: Method for trinitrotoluene manufacture
Filed: 1954-11-29
Abstract: Trinitrotoluene is prepared by treating mononitrotoluene and/or dinitrotoluene in countercurrent in a series of nitrators and separators with nitration acid containing 86-95 per cent sulphuric acid, 0.5-14 per cent nitric acid and 0-13.5 per cent water and which may contain a small amount of sulphur trioxide. The nitrators and separators are arranged in pairs, the nitrated product from one nitrator being separated from nitration acid in the separator <PICT:0772895/IV(b)/1> <PICT:0772895/IV(b)/2> <PICT:0772895/IV(b)/3> before passing to the next nitrator in the series, the acid phase passing to the previous nitrator, so that acid and nitrotoluenes flow countercurrently through the system.  In Figs. 1 and 2, nitrotoluene from storage A flows to nitrator 1a and 2a, is separated from nitration acid in separator 3a and passes via 6a to nitrator 1b and 2b and so on, the trinitrotoluene product emerging from separator 3f via overflow 6f.  Nitration acid from storage B is fed to nitrator 1f and 2f, is separated in 3f passing via 7f to nitrator 1e and 2e and subsequently to each nitrator in turn, finally emerging as spent acid from overflow 7a of separator 3a. Storage tanks C and D supply make-up acid comprising a mixture of concentrated nitric acid and oleum, and concentrated nitric acid respectively.  The trinitrotoluene leaving the system via 6f is washed successively with water, sodium bicarbonate solution, sodium sulphite solution and water and is dried.  The composition of the nitration acid varies throughout the system within the limits given above.  Fig. 3 shows a nitrator 1 and 2 round which nitrotoluene and nitration acid is circulated by pumping and mixing wheel 10, part of the mixture being continuously led to separator 3 from which separated nitrotoluenes pass via 6 to the next nitrator in the series, part of the separated acid phase passing back to 1 and 2 via 8 and 19, and the remainder passing to the previous nitrator in the series via 7.  The acid phase in the nitrators is maintained at not less than 80 per cent of the total volume of reaction mixture present, and the temperatures of the nitrators in the series range from 65 DEG  to 90 DEG  C.
Patent GB-1013338-A (GB)
Title: Improvements in periscopes
IPC: G02B23/08
Filed: 1962-09-10
Abstract: 1,013,338. Periscopes systems. METALLWERK GLOCKERAU G.m.b.H and F. RAUCH, [both trading as ALBERT, SCHACHT]. Sept. 10, 1962 [Sept. 8, 1961; Aug. 10, 1962],No. 34580/62. Heading G2J. The periscope includes an creator formed by two meniscus components L 5 L 6  and L 9 L 10  spaced apart a distance between 0. 07f and 0. 4f, with one or more conveying elements L 7 , L 8  therebetween, the convex surfaces r 10 , -r 15  of the menisci facing each other and being of larger radius than the respective concave surfaces, r 8 , r 17 , -the numerical sum of the radii r 8 , r 17  being between f/2. 5 and 2f and the total axial length of the menisci ci being greater than f/2 and less than 2f, where f is the force length of the erector. As shown, the menisci components of the erector are cemented doublets L 5 , L 6  and L 9 , L 10 , but they may comprise air spand elements. Preferably elements L 5  and L 10  have a refractive index above 1.69. The rear surface r 7  of the field lens L 4  is aspherical. Optical data are given for one example of the periscope system shown.
Patent GB-492365-A (GB)
Title: Improvements in or relating to processes for increasing the capillarity of grinding means
IPC: C09K3/14
Filed: 1936-12-16
Abstract: 492,365. Grinding. LONZA ELEKTRIZITATSWERKE UND CHEMISCHE FABRIKEN AKT.-GES. Dec. 16, 1936. Nos. 34629 and 34630. Void. Convention dates, Dec. 16, 193.5 and Nov. 11, 1936. [Class 60] Granules of grinding materials, for example, corundum or silicon carbide, have the moistening capability thereof increased by treating the granules with substances containing an alkali metal and a halogen, either separately or in combination, the granules then being dried and calcined at a temperature of about 900‹ C. As examples of substances suitable for the process, sodium chloride, sodium or potassium fluoride, ammonium silicon fluoride, or ammonium bifluoride may be used in solution, suspension or a sludge, the granules being boiled in the substance to ensure uniform treatment, dried and calcined. The substances containing the alkali metal and the halogen may be applied separately in succession, for example in the form of sodium hydroxide and hydrochloric acid.
Patent GB-650748-A (GB)
Title: Improvements in or relating to the curing of building materials made of steam-cured light-weight concrete
IPC: C04B40/02
Filed: 1947-12-30
Abstract: The steam curing of concrete &c. is facilitated by forming channels in it which divide the mass into cubes.  The channels may be a few mm. diameter and not more than 5 cm., and the cubes are of 0.3 to 1 cubic decimetre.  The channels are formed by pointed tools or by casting plugs in the mass and withdrawing before or after curing, or rods of porous material may be cast and left in the concrete.
Patent GB-742918-A (GB)
Title: Improved method for the sterilization and packaging of surgical sutures and packaged sutures so produced
IPC: A61B17/06
Filed: 1953-12-11
Abstract: A surgical suture e.g. of the absorbable or natural collagen filament type is sterilized by soaking preferably for at least five days at a temperature from 37 to 60 DEG C. in a solution e.g. 1 to 40 per cent by volume water and 60 to 99 per cent by volume of organic solvents consisting of an aliphatic monohydroxy alcohol or ketone having less than 5 carbon atoms e.g. ethanol, of a non-toxic quaternary ammonium slat having pronounced germicidal properties.  The quaternary ammonium salts particularly effective are represented by the formula <FORM:0742918/VI/1> wherein R1 represents an alkyl, alkylene, aryl, or alkaryl group, and R2 represents an alkyl, alkylene, aryl, or alkaryl group, or R1 and R2 jointly represent a heterocyclic ring; R3 represents an alkyl or alkylene group; R4 represents an alkyl or alkylene group; and X represents an inorganic anion, and specific preferred classes are those where R3 represents an alkyl or alkylene group containing from 8 to 18 carbon atoms; R1 represents a methyl or benzyl group; and R2 and R4 separately represent methyl groups, and where R1 and R2 jointly represent a 6-membered heterocyclic ring; R3 represents an alkyl or akylene group containing from 8 to 18 carbon atoms; and R4 represents a methyl group.  In both of these classes X represents preferably a halide e.g. chloride or bromide or sulphate ion.  Sutures are prepared in the usual way and wrapped on a reel or otherwise coiled and inserted in a container e.g. glass ampules or flexible plastic bag which is filled with the solution and sealed and incubated at the required temperature for the required time.
Patent GB-407475-A (GB)
Title: Improvements in or relating to lubricators
IPC: F16N11/04
Filed: 1932-12-07
Abstract: 407,475. Piston apparatus for discharging receptacles. TRIER BROS., Ltd., and TRIER, F. N., 36, Victoria Street, London. Dec. 7, 1932, No. 34642. [Class 102 (ii).] A lubricator comprises a cylindrical container A closed at its lower end by a base A<1> having a discharge passage A<3>. A tubular member C is secured to the base A<1> coaxially with the container, the interior of the member C communicating with the discharge passage A<3> and also through a lateral bore C<1> with the interior of the container A. Thetubular member C extends freely through an aperture in the upper end of the container A, and is provided at its upper end with a grease gun nipple C' whereby the container A is filled. A spring-pressed piston D mounted on the member C carries a sleeve D<2> surrounding said member and extending therewith through the upper end of the container. The sleeve D<2> indicates the position of the piston within the container and may be coloured or distinctively marked. A screw E is provided for varying the area of the discharge passage A<3>.
Patent GB-1372712-A (GB)
Title: Seat harnesses or safety belts
IPC: B60R22/347
Filed: 1971-07-23
Abstract: 1372712 Safety harness TELEFLEX Ltd 18 July 1972 [23 July 1971] 34792/71 Heading A3V A lap belt particularly for an aircraft seat 10 comprises an assembly 12 at one side of the seat in the form of a buckle 13 at one end of a flexible stalk 14 and an assembly 11 at the other side of the seat which includes a spring-loaded webbing retraction reel 17 for supplying a variable length of webbing 16 having at its free end a buckle tongue 15 for engagement with the buckle 13 and manually releasable snubber 29 which normally engages the webbing 16 to restrain its movement into and out of the reel 17. The webbing 16 is led from the reel 17 through a cover sleeve 18 having a spring steel member 22 therein to form a flexible stalk terminating in a plastics cover 31 in which the snubber 29 is pivotally mounted on a pin 28. A spring (not shown) normally holds the snubber in a position in which teeth 32 thereon engage the webbing 16 and restrain its movement into or out of the reel 17. A release trigger 20 on the snubber 29 allows manual pivotal movement of the snubber to release the teeth 32.
Patent GB-308640-A (GB)
Title: Improvements in and connected with rotary pump machines
IPC: F01C21/08
Filed: 1927-12-23
Abstract: 308,640. Eyston, G. E. T., and Powerplus (1927), Ltd. Dec. 23, 1927. Drawings to Specification. Fixed-abutment type.-In rotary pumps having vanes of thin sheet material with outwardly sliding or sliding-rocking movement in the rotors, spaced bearing surfaces are provided forthe vanes. The slots or the rocking pieces in the rotors may be cut away to provide one or more bearing surfaces or the vanes may be reduced in thickness over portions of their length. When strengthening ribs are provided on the vanes the rotor is cut away to give them clearance. Lubricant is supplied to the bearing surfaces by passages in the rotor and the outlets may be placed so that they are never uncovered by the vanes. Rocking pieces may be drilled or cut away to reduce their weight. Specifications 279,141 and 295,756 are referred to.
Patent GB-1039139-A (GB)
Title: Improvements relating to braking and/or tractive systems
Inventor: SHANKS OSWALD GREGORY
IPC: B60T8/32
Filed: 1964-08-26
Abstract: 1,039,139. Fluid-pressure brakes. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. July 28, 1965 [Aug. 26, 1964], No. 34914/64. Addition to 983,869. Heading F2F. The apparatus disclosed in the parent Specification for controlling the braking and/or tractive forces on a wheeled vehicle by means responsive to a signal representing rate of change of peripheral velocity of a driven wheel of the vehicle, so that skidding and/or slipping of the wheel is prevented, is applied to fluid-pressure braking of the wheel to prevent spin, by an arrangement of valves controlled in response to the signal such that the braking is operated up to a first predetermined pressure, and subsequently if slipping still persists is allowed to increase towards a further higher predetermined pressure in a restrained manner. As shown, the signal from taco generator 1, via an electronic circuit 2 as described in the parent Specification, is applied simultaneously to the coils of magnet valves 3, 4 and 5, a pressure-responsive switch 6 sensitive to brake cylinder pressure however being included in the circuit to the coil of valve 3. As a result, compressed air from a reservoir source 7 passes simultaneously via valves 3 and 5 to one side of a double-check valve 8 fed also by the normal driver-controlled air supply 14, the output of valve 8 feeding brake cylinder 9. The air passing through valve 5, however, has to pass a restricting orifice 10 and a pressure-limiting valve 11 set to the higher predetermined pressure. When the first predetermined pressure is reached at the switch 6, delayed slightly by a restriction 12, valve 3 is re-closed, so that the further rise in pressure via orifice 10 is at a slower rate than the initial pressure rise in cylinder 9. When spinning of the wheel is checked and valves 3-5 are de-energized air is exhausted from the cylinder via valve 4 and a restricting orifice 13. In a modification (Fig. 2, not shown) valve 5 is omitted and replaced by a connection from source 7 to an unused port of valve 4 shown blocked off in Fig. 1, this connection including the orifice 10 and pressure-limiting valve 11, while the connection between valve 4 and the double-check valve 8 is replaced by a connection to the unused port of valve 3 shown blocked off in Fig. 1. The operation is then the same except the supply of air via orifice 10 does not take place until valve 3 has been deenergized by the switch 6. In the latter arrangement a single orifice in the connection between valve 4 and valve 3 may be used in place of two separate orifices 10, 13 where different rates of restricted flow in supply and exhaust directions are not required.
Patent GB-989592-A (GB)
Title: Pressure-medium-actuated shifting device for a conveyor on which a coal plough is guided
IPC: E21F13/08
Filed: 1963-09-04
Abstract: 989,592. Mineral-mining installation. GEWERKSCHAFT EISENHUTTE WESTFALIA. Sept. 4, 1963 [Sept. 7, 1962], No. 34955/63. Heading E1F. [Also in Division B8] Each of the shifting devices provided in a mining installation for advancing a mining machine-guiding conveyer comprises a ram 10, 14 extending between the conveyer and a thrust block 11 and another ram 24 positioned above or below and directly or indirectly associated with the first ram so that by appropriate directional supply of pressurized fluid to the rams an oblique downwardly, or upwardly, or horizontal pressure can be applied to the conveyer as required to keep the mining machine cutting at a desired level. In the embodiment shown the ram 24 is combined with a damping unit 25 connected to a box structure 27 connected to the cylinder 10 of ram 10, 14 and slidable in the thrust block 11. The cylinder of the damping unit is openly connected to the pressure medium supply line of the rams 10, 14, 24.