baber/WOPTO huggingface dataset:
Patent GB-839007-A (GB)
Title: Polymerization process and products thereof
IPC: C08F2/00
Filed: 1956-09-18
Abstract: An hydrocarbon diluent used in the polymerization of olefins in the presence of a catalyst comprising chromium oxide associated with at least one oxide selected from silica, alumina, zirconia and thoria, is purified by contacting in the absence of olefin with a composite comprising chromium oxide associated with at least one oxide selected from silica, alumina, zirconia and thoria.  The diluent may be propane, isobutane, pentane, isopentane, iso-octane, cyclohexane, or methylcyclohexane, and is said to be freed of catalyst poisons by the treatment claimed. Purification of the diluent is preferably in the liquid phase and at 150-450 DEG  F., and in one modification may be effected with a recovered catalyst from a polymerization already effected.ALSO:A hydrocarbon diluent used in the polymerization of olefins in the presence of a catalyst comprising chromium oxide associated with at least one oxide selected from silica, alumina, zirconia and thoria, is purified by contacting in the absence of olefin with a composite comprising chromium oxide associated with at least one oxide selected from silica, alumina, zirconia and thoria. Olefins preferred are ethylene, propylene, butadiene, isoprene, alkyl or chloro substituted diolefins, and mixtures thereof.  The diluent may be propane, isobutane, pentane, isopentane, isooctane, cyclohexane, or methylcyclohexane, and is said to be freed of catalyst poisons by the treatment claimed. Purification of the diluent is preferably in the liquid phase and at 150-450 DEG  F., and in one modification may be effected with a recovered catalyst from a polymerization step.  The products obtained are characterized by trans-internal or terminal vinyl type unsaturation and may be fractionated with pentane and methylisobutyl ketone.  The polymers find use in the manufacture of surgical and pressure-sensitive tapes, calking and sealing compounds, laminated paper, hydraulic fluids, paper, capacitors, coatings, rubber extenders, oil additives, bottles, containers, pipe and tubing.
Patent GB-966667-A (GB)
Title: Improvements in yarn slub clearers
Inventor: GUTTERIDGE REGINALD ALAN
IPC: B65H63/06
Filed: 1963-07-19
Abstract: 966, 667. Counters. BENDIX ERICSSON U. K. Ltd. July 19, 1963, No. 28578/63. Addition to 918, 590. Heading G4D. [Also in Division D1] The parent Specification relates to a light responsive device that can be used to detect slubs in spun yarns and is characterized in that the circuitry is self-regulating to allow for any ageing of the lamp, or accumulation of dust in the optical system, &c. The passage of a slub through the device causes a relay RLA to operate to cut the yarn or stop the movement of the yarn. According to the present invention a counter C is arranged in parallel with the relay RLA to count the number of times the relay operates. A switch S1 enables the counter to be made non-operative whilst a yarn is being re-threaded or the optical system is being cleaned &c. A number of clearers may be connected to a single counter, each connection having a switch S and a diode D. The diodes D7 and D prevent the operation of one clearer from causing the relay RLA in another clearer to operate. The switch S performs the same function as the switch S1.
Patent GB-266035-A (GB)
Title: Improvements in or relating to the take-up motions of looms
IPC: D03D49/20
Filed: 1925-11-13
Abstract: 266,035. Porter, O. W. L. Nov. 13, 1925. Take-up motions. - In a loom wherein the take-up roll 1 is driven at a speed which diminishes as the quantity of cloth on the roll increases, the driving is effected by friction ratchet mechanism of the " free wheel " type and means are provided for adjusting the rate of take-up. As shown, the roll 1 is driven through a worm and worm wheel 4, 3, a " free wheel " clutch 6, levers 9, 13, and rods 8. 12, 14. The rod 12 carries a block sliding in a slot 19 in the lever 9 and is adjusted according to the quantity of cloth on the roll 1 by a link 20 and lever 21. The lever 13 is suspended by a link 17 and is oscillated by an eccentric on the main shaft 15 about a pivot 25, which can be adjusted by means of the screw 27 to vary the rate of take-up. Reference has been directed by the Comptroller to Specifications 1834/78, 15805/86, 16212/89, 16872/89, and 27056/11.
Patent GB-391156-A (GB)
Title: Improvements in or relating to the stabilisation of chlorinated hydrocarbons
IPC: C07C17/42
Filed: 1931-10-14
Abstract: Chlorinated hydrocarbons containing two carbon atoms are stabilized by adding a small proportion of an alkylamine which prevents the liberation of acid in degreasing metals and fabrics. Suitable alkylamines are dibutylamine and mono-, di- and tri-ethylamine.  If the boiling-point of the amine is near to that of the chlorinated hydrocarbon, the mixture may be distilled with little change; such a mixture is trichlorethylene and triethylamine.  A small quantity of an alkaline substance such as lime or hydrated lime may be added, which is capable of decomposing the hydrochloride of the added amine. Apparatus parts in permanent contact with chlorinated hydrocarbons should not be made of copper or its alloys, but the treated solvent may be used for degreasing copper or brass articles, as the contact is of relatively short duration.  Specification 205,110, [Class 47 (ii), Fire-extinguishing &c.], is referred to.ALSO:Chlorinated hydrocarbons containing two carbon atoms are stabilized by adding a small proportion of an alkylamine which prevents the liberation of acid in degreasing metals and fabrics. Suitable alkylamines are dibutylamine and mono-, di- and tri-ethylamine.  If the boiling-point of the amine is near to that of the chlorinated hydrocarbon, the mixture may be distilled with little change; such a mixture is trichlorethylene and triethylamine.  A small quantity of an alkaline substance such as lime or hydrated lime may be added which is capable of decomposing the hydrochloride of the added amine.  Apparatus parts in permanent contact with chlorinated hydrocarbons should not be made of copper or its alloys, but the treated solvent may be used for degreasing copper or brass articles, as the contact is of relatively short duration.  Specification 205,110, [Class 47 (ii), Fire-extinguishing &c.], is referred to.
Patent GB-584245-A (GB)
Title: Improvements in and relating to control devices for variable-pitch propellers
IPC: B64C11/44
Filed: 1939-10-25
Abstract: 584,245. Variable - pitch propellers. SOC. ANON. SOLEX. Oct. 25, 1939, No. 28673. Convention date, Nov. 17, 1938. [Class 114] [Also in Group XXIX] A variable-pitch propeller is controlled so that the pitch varies according to the power ofthe engine. As shown, the pitch of the blades 3 of a propeller 2 is varied by movement of a rod 5<1>. The latter is moved according to the pressure existing in the intake pipe 21 of the engine. The rod 5<1> is connected to a piston 7 which is actuated by fluid pressure led to its upper or lower face by pipes 11, 12 from a supply pipe 17 ; 18 is an exhaust pipe. The fluid pressure is distributed by a valve 14 actuated by a capsule 15 subjected to the pressure in the intake pipe 21. A cam 32 on the piston-rod 31 acts on a roller 34 connected to the capsule 15. As the pressure in the intake pipe varies, the capsule expands or contracts to move the valve 14 so that the piston 7 moves to vary the pitch of the propeller blades. If the cam 32 and roller 34 are omitted, the piston 7 will be held at one or other end of its cylinder and the propeller blades will operate' at only two definite pitches. Hand control may be had by fitting the piston-rod with links 25, 26 and pivoted hand lever 27. A centrifugal control 29 may also be inserted adjacent the control rod 5<1> so that the engine speed remains approximately constant. In a modification, the piston 7 is replaced by a diaphragm which is acted upon by the pressure existing at two spaced-apart points of the intake pipe of the engine.
Patent GB-1071363-A (GB)
Title: Improvements in fuel elements
IPC: G21C3/20
Filed: 1965-07-06
Abstract: 1,071,363. Fuel elements. BABCOCK & WILCOX Ltd. July 6, 1965 [July 7, 1964], No. 28708/65. Heading G6C. A plate-type fuel element comprises a fissile core 20 surrounded by a plate-shaped frame 12 having a hole 14 in which the core is received, the core is shallower than the hole 14 so that core cover plates 21, 22 fit flush with faces 16, 18 of the frame 12. Cover-plates 23, 24 may be added after the core cover-plates have been welded, and the whole assembly then roll bonded. The core can be a cermet of powdered aluminium and uranium oxide, with or without the addition of boron. The oxide may be UO 2  or U 3 O 8 .
Patent GB-684369-A (GB)
Title: Production of oximes
Filed: 1950-11-23
Abstract: Oximes are prepared by reducing alkali metal or alkaline earth metal salts of primary or secondary nitro compounds of the aliphatic or cycloaliphatic series by means of hydrogen sulphide in a solution maintained acid throughout the reaction.  The reaction may be effected in an aqueous solution or in an organic solvent or suspending medium.  Instead of hydrogen sulphide being added to the reaction mixture, a metal sulphide in combination with an acid may be used, thus producing hydrogen sulphide in situ.  The resulting oximes may be separated from the sulphur also formed by extracting with a solvent.  In examples: (1) nitroethane in aqueous caustic soda solution is introduced into a stirred solution of sulphuric acid and hydrogen sulphide is passed in at the same time, sulphuric acid being added to maintain a pH of 3 and the mixture is then neutralized and the resulting acetaldehyde oxime is extracted with benzene; (2) nitrocyclohexane in aqueous caustic soda is mixed with a saturated aqueous solution of sodium sulphide and the mixture is then introduced into dilute sulphuric acid maintained at pH 3 as above, the product is neutralized and cyclohexanone - oxime together with minor amounts of cyclohexanone, cyclohexanol and cyclohexyl amine sulphate are obtained; (3) nitro cyclohexane in methanolic caustic soda is introduced with stirring into methanolic sulphuric acid and hydrogen sulphide is passed in at the same time, a pH of 3 being maintained by addition of methanolic sulphuric acid, the products being as in (2) above.  Other specified starting materials are 1-nitropropane, 2-nitropropane, 2-nitrohexane, 2-nitro-1-methyl-cyclohexane and 3 - nitro - 1 - methyl cyclohexane. Further examples of reaction media are hexane, heptane, cyclohexane, benzene and ethyl alcohol.
Patent GB-1353996-A (GB)
Title: Device for form-ng a selvedge on a fabric
IPC: D03C7/08
Filed: 1971-06-18
Abstract: 1353996 Leno shedding motions MACHINEFABRIEK L TE STRAKE NV 18 June 1971 [19 June 1970] 28793/71 Heading DIE A jet loom has a full cross leno shedding motion wherein leno threads 27, 28 are repeatedly twisted in one direction by heald eyes 25, 26 on an endless chain 24, both threads being pulled off a bobbin 7 on a rotating platform 6 driven in synchronism with the chain 24, and has the provision of a slotted guide 13 which rotates with the platform 6 and is so disposed that the tension of the leno threads 27, 28 is substantially constant during their shedding by the eyes 25, 26. The bobbin 7 is braked (Figure 3) by spring loaded pins 39, 40 acting on a flange 7a of the bobbin, a roller 37 being provided which is pulled onto the threads by a spring.
Patent GB-1002177-A (GB)
Title: Jet engine for propelling and lifting aircraft
Inventor: EICHHOLTS KONRAD AUGUST WERNER
IPC: B64C29/00
Filed: 1962-07-27
Abstract: 1,002,177. Gas turbine jet propulsion plant. SOC NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. July 27, 1962 [Aug. 4, 1961], No. 28863/62. Heading F1J. [Also in Division B7] A jet engine for use in aircraft capable of vertical take-off and landing comprises a rearwardly-directed propulsion nozzle and a downwardly-directed lifting nozzle, the two nozzles branching from a common duct from which by means of a suitable distributing device, gas flow is distributed between the nozzles in any desired proportions, the engine comprising a low pressure compressor or fan disposed within the common duct, the compressor discharging air into a combustion chamber disposed upstream of the point from which the two nozzles branch off. At least part of the power required to drive the compressor is supplied by means external to the duct. The engine shown in Fig. 1 comprises a low pressure compressor or fan 3 mounted within a duct 1, the compressor being driven by a gas turbine 4 which receives gases from a combustion chamber 5, the combustion chamber being supplied with air under pressure from a compressor 12 which is disposed within a separate duct 13. Air passes from the compressor 12 to the combustion chamber 5 through a duct 10 and manifold 9. The compressor 12 is driven by a device 14. The air delivered by the compressor 3 is heated by combustion equipment 6, the resulting combustion gases mixing with gases discharging from the turbine 4, the mixed gases then being further heated in reheat chamber 8 by combustion equipment 7. The flow of gases to the propulsion nozzle 2 and vertical lift nozzle 15 is controlled by a shutter device 16 which is pivotally mounted at 17, three positions of the shutter being indicated at a, b and c. Additional combustion equipment is provided at 18 in the duct leading to the propulsion nozzle 2. The stator blading 3a of the compressor is adjustable. In a second embodiment, the gas flow from the reheat chamber 8 to the vertical lift nozzle is through a series of nozzles 23 from which gas is discharged into a pair of transverse ducts 20 which are open at both ends, the gas discharging from the nozzles producing an ejector effect whereby ambient air is drawn into the ducts 20 at the upper ends and discharged with the combustion gases at the lower ends. The upper ends of the ducts are controlled by pivoted flaps 21 which are pivoted on axes transverse to the aircraft, while the lower ends of the ducts are controlled by pivoted flaps 22 and 25, the pivotal axes of these flaps extending longitudinally of the aircraft. The outlets of the nozzles 23 are controlled by pivotally-mounted shutters 24. Specification 955,013 is referred to.
Patent GB-335734-A (GB)
Title: A device for delivering measured quantities of liquid
IPC: G01F11/44
Filed: 1929-09-24
Abstract: 335,734. Wilson's Soda Fountains (1921), Ltd., and Calvert, W. Sept. 24, 1929. Fixed-chamber apparatus.-A glass measuring chamber A is alternately put into connection with diametrically-opposed supply and discharge passages by means of disc-valve B having ports b<1>. 90‹ apart from each other. A pad of rubber &c. is placed beneath the valve, and may be seated in a recess in the casing. The handle b<5> has limiting stops.
Patent GB-603858-A (GB)
Title: Improved means for preheating air for carburetters and the like for internal combustion engines
IPC: F02M1/00
Filed: 1945-11-01
Abstract: 603,858. Heating charge. ELLIOT, W. Nov. 1, 1945, No. 29022. Addition to 563,096. [Class 7 (iii)] In the fitment for preheating air, described in the parent Specification, a valve 15, in the connection between the air filter and the carburetter, deflects some or all of the air through a jacket 8 surrounding the exhaust pipe 9. The valve 15 is operated through a lever 18 and has a spring fixed to its spindle to maintain it in any set position.
Patent GB-388852-A (GB)
Title: An optical sky-illumination measurer
IPC: G01J1/00
Filed: 1931-10-19
Abstract: 388,852. Calculating- apparatus - WALDRAM, P. J., 9, Gray's Inn Square, London. Oct. 19, 1931, No. 29047. [Class 106 (i).] The daylight illumination of, say, a desk in a room is measured by means of a projecting apparatus throwing an image of the available sky on a screen provided with a chart enabling this image to be read in terms of the ratio to the maximum illumination possible from a complete sky. The lens 14 mounted in one side of a triangular casing throws an image on a mirror 21 which reflects it upon a ground glass screen 19 removably carried by another side of the casing and shielded by a pivoted hood 22. To the base of the casing is pivoted a pair of flaps 26 and by suitable disposition of these the casing may be supported with the lens axis horizontal or vertical. Fig. 6 shows a chart designed for the apparatus when in the position shown in Fig. 1, each small area in the chart being equivalent to À1 per cent cill ratio. The glass screen may be replaced by a photographic film or plate.
Patent GB-915104-A (GB)
Title: Operating theatre lighting system
IPC: F21S8/00
Filed: 1961-08-11
Abstract: 915,104. Lighting for operating theatres. ANCIENS ETABLISSEMENTS BARBIER, BENARD & TURENNE. Aug. 11, 1961 [Sept. 1, 1960], No. 29097/61. Classes 75 (2) and 76 (4). In a lighting arrangement for operating theatres of the type described in Specification 825,638, comprising a light source L located on the longitudinal axis of the apparatus, a ring lens O associated with an annular mirror M and a reflector R for reflecting the rays not passing through the ring lens, the mirror M and reflector R are joined together to form the casing of the apparatus. Auxiliary projectors A may be arranged in the zone adjacent the join between the mirror M and reflector R and may be used in addition to the source L or for emergency lighting in which case they are supplied from an independent power source. The mirror M may be slightly convex to produce a wider field of illumination.
Patent GB-161222-A (GB)
Title: Method of and means for driving paper-making and like machines
IPC: D21F7/02
Filed: 1919-11-24
Abstract: 161,222. Milne, S. Nov. 24, 1919. Driving-mechanism.-In driving paper-making and like machines wherein several members or units are each driven in harmony with the other members and wherein some or all require to move at different rates of speed compared with others, a steam engine a running at practically constant speed drives a dynamo by which current of variable voltage is supplied to variable speed motors b<1> to b<9>, preferably overhead, which drive the variable speed members of the paper machine through belts, ropes or the like, the speed relation being maintained by means of a master motor shaft g to which the several units are connected, and the relative speed ratios maintained constant by regulating-mechanism comprising differential gearing such as that described in Specification 22897/14. The constant speed parts, back shafting, pumps, &c. are driven direct from the engine by belts, ropes, &c., or by motors supplied with current by a dynamo driven by the steam engine, and the engine is placed near the drying end of the machine so that the exhaust steam can be used efficiently. Large sections such as the drying section may be driven from one motor by means of two or more belts.
Patent GB-650542-A (GB)
Title: Improvements relating to apparatus for the detection and measurement or identification of vibrations
IPC: G01H9/00
Filed: 1947-11-03
Abstract: 650,542. Indicating vibrations. ASH, A. E. M. Nov. 3, 1947, No. 29247. [Class 106 (iv)] [Also in Group VI] Apparatus for investigating the vibrational characteristics of a " body " (e.g. human tissue) comprises a holder 19 for the body, a holder 22 for a " sample " which is in effect a source of exciting vibrations, means to couple the two holders so that the vibrations may pass from the sample to excite the body, and device 1 to detect and examine the vibrations of the body. The distance apart of the holders and their distance from the detector may be varied by sliding them into a cross-piece 21 carried at the end of a bar 26 slidable relatively to the detector 1 by turning a handle 31. The supports for the bar are rotatable about horizontal and vertical axes. The body and/or the sample may be remote from the holders and connected thereto by wave-guides or wires, e.g. a human body may be investigated by a probe connected to the holder 19. The detector shown in Fig. 2 comprises a pool of mercury in a vessel 2 mounted in a vibrationinsulated support. A beam of light 12 is directed on to the surface of the mercury and is observed by the eye 18 or some other instrument. In a modification, the detector comprises, in place of that shown in Fig. 2, a piezoelectric crystal mounted in a glass bulb situated at the focus of a parabolic reflector mounted on an arm rotatable in the vertical and horizontal planes.
Patent GB-305261-A (GB)
Title: Improvements in or relating to machines for dressing hides, skins, leather and othermaterials
IPC: C14B1/44
Filed: 1927-11-03
Abstract: 305,261. Turner Tanning Machinery Co., Ltd., (Turner Tanning Machinery Co.). Nov. 3, 1927. Rotating-tool machines.-In a machine of the kind in which liquid dressings or seasonings are applied to leather and other sheet material by means of brushes bearing against a drum on which the leather is supported, adjustments are provided for the brushes comprising carriers which are movable in planes parallel to planes radial to the drum so that the brushes themselves are moved in radial planes. A change speed gear is provided for the liquid transferring roll and liquid is supplied to the brushes from a trough in which it is agitated by a jet device forming part of a circulating system. A special form of wiper is provided for the drum, and the feeding- in table has spaced ribs at its edge adjacent to the drum. The brushes 26 - - 32 which cooperate with the drum 22 are supported in bearings at each end carried by tubular supports 60 which are screwed into sockets 50 and adjustably clamped therein by interior rods 64 having coneshaped beads 68 which are wedged in the split ends of the supports by tightening wing-nuts 66. The liquid-distributing roll 34 which rotates in a trough 36 is mounted in adjustable bearings and is driven through gearing which includes a series of gear wheels 224 mounted on the drum-shaft 24 and selectively engaged by a pinion 222 carried by a hand-manipulated lever 218, 220 and meshing with a pinion 216 splined on a shaft 210 from which the roll is driven by chain gearing. Locking means are provided for the lever 218. The liquid in the trough 36 is circulated through a perforated pipe 100 and spills over a weir 116 and thence to a vessel 120 provided with a stirrer 126 from which it is returned to the trough by a pump 142. The wiper 176 is adjustable by screw devices 182 in a slide-way angularly adjustable in brackets by screw-devices 174. The feeding-in table 20 has a continuation adjacent to the drum comprising ribs 200 spaced by a connecting web. A stripper 40 is provided for removing the hides from the drum.
Patent GB-324017-A (GB)
Title: The manufacture of new dyestuffs and dyestuff intermediates of the dinaphthylene dioxide series
IPC: C07D493/06
Filed: 1928-10-12
Abstract: 324,017. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). Oct. 12, 1928. Halogenated dinaphthylene dioxides are prepared by treating dinaphthylene dioxide with a halogenating agent, preferably in a high boiling organic solvent. In examples di-, tetra- and deca-chlordinaphthylene dioxide are obtained by chlorinating dinaphthylene dioxide dissolved in trichlorbenzene, and by bromination of the parent material dissolved in this solvent the di- and tetra-bromo derivatives are prepared. These products are pigment dyestuffs applicable for the manufacture of oil and printing colours. In examples a printing colour is prepared by mixing a paste of tetrachlordinaphthylene dioxide with a suspension of aluminium hydroxide, filtering, drying and grinding the product with printer's varnish. An oil colour is prepared by grinding a dibromdinaphthylene dioxide with heavy spar and compounding the product with linseed oil by grinding.