baber/WOPTO huggingface dataset:
Patent GB-654778-A (GB)
Title: Process for producing high boiling polymers of propylene
IPC: C07C2/18
Filed: 1948-06-08
Abstract: High-boiling propylene polymers are made by polymerizing propylene containing not more than 0.03, preferably 0.01, mol. per cent of water in the presence of a solid polymerization catalyst containing a phosphoric acid catalyst compound, isolating from the product a fraction comprising essentially olefines with more than 10 carbon atoms per molecule, and returning polymers containing less than 12 carbon atoms per molecule to the polymerization zone together with fresh propylene feed.  Thus polymers of boiling p  range 170-225 DEG C. are made from a propane-propylene fraction and a propylene polymer fraction boiling below 170 DEG  C. at a temperature of 120-230 DEG C. and a pressure of 7-135 atmos., polymers of the specified range being collected and the lower boiling polymers being recycled at least in part, and polymers of boiling range 180-210 DEG  C. are made in a similar way from the above feed, boiling below 180 DEG  C. at a preferred temperature of from 135-190 DEG  C. and a preferred pressure of 40-80 atmos.  The catalysts to be used are prepared and described in Specifications 437,188, 463,272 and 463,864, [both in Group III], and are particularly precalcined composites of an acid of phosphorus and diatomaceous earth or other siliceous adsorbent, e.g. montmorillonite.  The recycle stock may include mono-olefines containing from about 6-12 carbon atoms per molecule, preferably straight-chain or mildly branched, from any source.  Quantities of water towards the higher part of the range 0-0.3 may be present at the higher temperatures.  The volume ratio of propane-propylene/propylene polymers specified is from (0.5-5)/1, preferably 1/(1.0-2.5).  A rate of 0.1-5 hourly liquid space velocity of C3 fraction is specified.  The products are used for the alkylation of aromatics with subsequent sulphonation to obtain detergents.  In examples: (1) a dry hydrocarbon fraction containing 33.3 per cent propylene and 63.1 per cent propane is mixed with recycled polymers boiling between 38 DEG  and 180 DEG  C., reacted at 150-205 DEG  C. in the presence of a calcined composite of pyrophosphoric acid and diatomaceous earth at 51-52 atmos. and a table is given of the yield of polymers boiling between 180-210 DEG C. obtained for various feed ratios and catalyst space velocities; (2) and (3) are similar to (1) except that the fresh feed contains 42 per cent propylene and (4) illustrates the decline in activity of the catalyst when the feed is dry and contains no recycled polymers.
Patent GB-904549-A (GB)
Title: Preparation of epoxy ethers and formation of cured resinous products therefrom
Inventor: COOKE VICTOR FRANCIS GEORGE
IPC: C08G59/34
Filed: 1959-05-06
Abstract: A cured epoxy polyether resin is made by mixing an epoxy polyether, obtained by epoxidizing a polyether of a vinyl epoxy cyclohexane or a copolyether of a vinyl epoxycyclohexane and an alkylene oxide, with a polyamine, a polycarboxylic acid or anhydride, a polyhydric phenol, a polyhydric alcohol or a polyamide, and causing or allowing the mixture to harden to form a cross-linked resinous product.  In examples, (1) an epoxidized copolymer of 1-vinyl-3,4-epoxycyclohexane and propylene oxide is mixed with diethylene triamine and cured at 100 DEG C. for 40 minutes; a 50% solution of the epoxy polyether in butanol/toluene mixture is treated with diethylene triamine and the solution cast as a film on glass and cured at 100 DEG C.; (2) an epoxy polyether of 1-vinyl-3,4-epoxy-cyclohexane is cured separately with diethylene triamine, with a polyamide based on a dimerized vegetable oil acid and ethylene diamine, and with diaminodiphenyl methane; (3) an epoxy polyether of 1-vinyl-3,4-epoxycyclohexane is cured with triethylene tetramine.ALSO:Epoxy polyether compounds are made by epoxidising a polyether of a vinyl epoxy cyclohexane or a copolyether of a vinyl epoxy cyclohexane and an alkylene oxide.  The epoxidation may be effected using a peracid, preferably peracetic acid, at ordinary temperatures but preferably at 30 DEG C. to 50 DEG C.  The polether starting material may be made from the vinyl epoxy cyclohexane by heating in the presence of a strong alkali catalyst, e.g. potassium hydroxide, and 5 to 10 mol % of a glycol, polyol, an organic carboxylic acid, an amine, or an anhydride of a di or polycarboxylic acid.  The reaction is conveniently carried out at temperatures of 100 DEG C. or over, e.g. 110 DEG  to 140 DEG C. under a reflux condenser for 10 to 15 hours in an inert atmosphere such as nitrogen.  Similar conditions may be used for copolyethers from vinyl epoxycyclohexane and an alkylene oxide, such as propylene oxide. Examples describe the preparation and epoxidation of the polyether of 1-vinyl-3,4-epoxy - cyclohexane and its copolyether with propylene oxide.
Patent GB-956634-A (GB)
Title: Power driven domestic laundry machines
IPC: B60B33/06
Filed: 1962-04-24
Abstract: 956,634. Laundry machines. WILKINS & MITCHELL Ltd. April 10,1963 [April 24,1962], No. 15497/62. Heading D1A. [Also in Division F4] A laundry machine is provided with three retractable wheels. Two of the wheels 11 are mounted in forks 13 rigidly attached to a shaft 14 to one end of which is attached a lever 30. The other wheel 18 is of the castor type and is mounted on a support 21 pivoted at 22; to which support is pivoted one arm of a toggle 25 the other being rigidly connected to a shaft 23. The shaft 23 is rotated by a hand lever 26 rigidly attached thereto and the shaft 14 is rotated by a rod 29 connecting the hand lever 26 to the lever 30. Thus when the hand lever 26 is moved clockwise from the position shown the wheels are retracted and the machine is firmly seated on pads 32.
Patent GB-379348-A (GB)
Title: Improvements relating to containers for fluids under pressure
IPC: A62C3/08
Filed: 1931-05-27
Abstract: 379,348. Emergency flotation gear KIDDE & CO., Inc., W., 140, Cedar Street, New York, U.S.A.-(Assignees of Mapes, D. ; Mamaroneck, New York, U.S.A.) May 27, 1931, No. 15569. Convention date, June 12, 1930. [Class 4.] A container for fluid under pressure, suitable for fire-extinguishing and the inflation of flotation bags for aircraft, is provided, with means for releasing the fluid, and, in association with said means, an indicating member actuated by said means for showing when the fluid has been released. As shown, the container 6 is sealed by a seal 15<1> adapted to be ruptured by a tubular cutter 22. The latter has a spindle 23 threaded in a coupling head 16 and operable by a stem 26, pulley 28, and cable 30. The stem is rendered gastight by a shoulder 27 and nut 20. The head 16 is associated with a casing 35 in which are slidable an indicating member 45 normally raised by a spring 46, and a piston 38. The latter carries at its upper end a ball socket 43 in engagement with a cam surface 49 on the pulley. When the latter is rotated to drive in the cutter and release the fluid, the cam surface causes the piston to drive down the indicator, so that its lower end, which may be coloured, becomes visible through openings 48 in the casing. The indicator is retained in its lowered position by means of an angular groove 45<111> and a spring latch 51. The latter is so arranged in a recess in the casing that it can only be withdrawn from operative position after the head 16 has been removed from the container. When the piston 38 has been driven down, it opens communication between the delivery port 34 for the fluid and a discharge line 50. If the disc 15 is ruptured unintentionally by excessive pressure within the container, the escaping fluid is prevented by the piston 38 from passing to the discharge line 50, but passes by passages 41, 42 in the piston to a restricted passage 45<1> in the indicator 45. Here, it forces down the indicator to indicating position, and then escapes by the apertures 48. In a modification, Fig. 7, a separate indication of unintentional release of the fluid is provided. A side outlet from the head 16 is provided with frangible discs 74, 76. When these discs are broken by the escaping fluid, a coloured indicating disc 79 becomes visible. The pressure fluid may be applied to the inflation of flotation bags for aircraft. The bags are enclosed in-envelopes 1, Fig. 2, the cover flaps f<5> of which are held closed by wires 2 engaging ringlets 3. The wires are connected to a piston 61 arranged in a cylinder 12, one end of which is connected by a pipe 11 to the discharge port of the container 6, and the other end to the flotation bags by a pipe 5 provided with a non-return valve 14. When the pilot opens the container by means of the cable 9 and lever 8, the gas first moves the piston to open the envelopes and then passes through the pipe 5 into the bags.
Patent GB-1405367-A (GB)
Title: System and method for supplying air to a fuel-injected internal combustion engine
IPC: F02M69/04
Filed: 1973-04-02
Abstract: 1405367 Fuel injection I C engines FORD MOTOR CO Ltd 2 April 1973 [17 April 1972] 15683/73 Heading F1B An air supply system in an I. C. engine comprises fuel injection apparatus 20, including an airassist nozzle, positioned in an intake manifold 20, means 34 for measuring the amount of air entering the inlet of a first conduit 30 which has an outlet in communication with an air inlet passage 14 of the intake manifold and a second conduit 42 in communication with the first conduit 30 downstream of means 34 and with the air-assist nozzle.
Patent GB-593934-A (GB)
Title: Improvements in or relating to holders for eggs
IPC: A47G19/28
Filed: 1945-06-20
Abstract: 593,934. Egg cups. HOLLAND, C. A. June 20, 1945, No. 15724. [Class 128] An egg holder comprises a base 1 of plate or disc form from which project upwardly a number of separate fingers 3 so shaped and located as to form a skeleton structure for receiving an e g g. The fingers, which are formed of rod or strip material with rounded or flared upper ends to facilitate entry of the egg, are riveted or otherwise attached to the base, which is preferably provided with a downwardlyextending flange. One of the fingers is provided with a looped extension 8 to form a handle. The device is preferably formed of metal to provide a resilient mounting.
Patent GB-345880-A (GB)
Title: Gas purifier for gas works, coke producing plants and the like working with dry mass
IPC: C10K1/22
Filed: 1930-05-22
Abstract: 345,880. Gas purifiers. CHATWIN, J., 253, Gray's Inn Road, London.-(Thyssen'sche Gas-und Wasserwerke, Ges. ; 159A, Duisburgerstrasse, Hamborn, Duisburg, Germany.) May 22, 1930, No. 15750. [Class 55 (ii).] In purifiers comprising a number of stapled-up trays b within a tower a with central and annular conduits for distributing and collecting the gas or vice versa, the trays comprise bottom plates c, an inner wall or pipe length d and an outer wall e, the walls d having slots g and forming the central conduit and the walls e having slots f. The slots f, g, are located in alternate trays so that passage of gas through purifying material on the trays is ensured. The purifier may have admission and discharge pipes for a sulphur solvent for desulphurizing the mass.
Patent GB-1463007-A (GB)
Title: High frequency device assembly
IPC: H01P1/00
Filed: 1974-04-10
Abstract: 1463007 Mounting semi-conductor devices RCA CORPORATION 10 April 1974 [11 July 1973] 15794/74 Heading H1K An assembly for a high frequency device, e.g. a microwave semi-conductor device or integrated circuit, comprises a housing 12 having a passage 14 therethrough, the high frequency device 48 being mounted on a base-plate 36 mounted in and extending across the passage 14, and at least one terminal 44 extending through the base plate 36 and at least one coaxial terminal 22 mounted on the housing 12 with a conductor pin 28 extending through the housing 12 each electrically connected to the device 48 and providing respectively, D.C. biasing and RF supplies to the device 48. The base-plate 36 has a transverse rib 40, the ends of which engage in notches 20 in the passage 14 to locate it therein and in the centre of which is a notch 42 accommodating the device 48. An array of terminals 44 connected to respective device electrodes extend through the base-plate 36 and a pair of microstrip circuit plates 50 are mounted on opposite sides of the rib 40 on the base-plate, each including a metal film strip 54 connecting the device with respective coaxial terminal fins 28. A metal plate 66 mounted on the rib 40 extends across the passage 14 to screen the circuit plates 50 from each other. The passage 14 has an internal shoulder against which the base-plate 36 is seated and held by an annular locking ring 62 held in the passage by headed screws 64. The device 48 is mounted on the base-plate 36 and the interconnections between it and the terminals 44 and the microstrip circuit plates 50 are completed prior to inserting the base-plate in the passage when the metal strips 54 are automatically aligned with coaxial terminal pins and form an electrical contact therewith. Equally, the base-plate and device 48 are readily removed to enable modifications to be made to the circuitry. Preferred dimensions of the housing assembly are given whereby the typical overall dimension is about one half of an electromagnetic wavelength in free space at the operating frequency of the device.
Patent GB-221860-A (GB)
Title: Improvements in methods and apparatus for the manufacture of diastases by means of oxidising ferments
IPC: C12N9/00
Filed: 1923-06-18
Abstract: 221,860. Boidin, A., and Effront, J. June 13, 1923. Drawings to Specification. Bacteria, cultivating.-In the process for producing diastases by means of oxidizing micro-organisms described in Specification 16198/14, a clear wort containing a small quantity of manganese and iron salts is employed instead of a thick mash. As examples of such worts there are described (a) a solution containing potassium chlorate, sodium chlorate, potassium sulphate, calcium tartrate or citrate, magnesium tartrate or citrate, potassium or sodium phosphate, ammonium carbonate, sulphates of iron manganese and ammonium, and glucose or starch, (b) a plant juice such as potato juice, made alkaline, and having added to it manganese sulphate and alkaline phosphates and ammonium salts; and (c) pea nut cake treated with a proteolytic ferment, as for example, that described in Specification 171,991, [Class 121, Starch &c.], or peptonized by acids, filtered and rendered alkaline, and with small quantities of iron and manganese salts, and, if necessary, oxyacid salts to keep such salts in solution. The process is carried out in apparatus similar to that described in Specification 16198/14, comprising a number of trays threaded on a central axis in a closed vessel, and with apertures for liquid to overflow from one tray to another, but the trays are deeper than in the prior apparatus and are cooled by water circulating through the central shaft, which is made hollow for the purpose. The wort is preferably seeded with bacterial ferment prepared at constant temperatures and under moderate aeration so as to contain about 95 spores for every five growing bacteria.
Patent GB-1177630-A (GB)
Title: Improvements relating to the Measurement of Oxygen Potential of Gases at High Temperatures.
Inventor: DAVIES DOUGLAS WILLIAM LEON AR
IPC: G01N27/416
Filed: 1966-04-12
Abstract: 1,177,630. Determining oxygen potential, electrically. G. K. N. GROUP SERVICES Ltd. April 10, 1967 [April 12, 1966], No.15870/66. Heading G1N. A probe for determining the "oxygen potential" of atmospheres in furnaces, ovens and flues at temperatures of the order of 650 C. to 1100 C., comprises a tube 10 of a fired refractory material which is an impervious solid anionic electrolyte, an outer electrode 23 of platinum-rhodium alloy wire wound under tension round the tube near its closed end 11, and an inner electrode 18 of a body of randomly wound platinum-rhodium alloy wire pressed into close contact with the end of the tube by a leaf-spring 21 acting through a rigid rod 15. In use, the outer electrode is in contact with the atmosphere under test and the inner electrode is in contact with a reference gas, e.g. air or pure oxygen. The tube 10 may be of zirconia, containing calcium oxide or magnesium oxide. The electrodes and the leads 17, 22 preferably contain at least 13% rhodium to resist the high temperatures and prevent embrittlement or stretching of the outer electrode under reducing conditions. The output voltage of the probe may be measured using a very high impedance instrument such as a valve voltmeter or a chart recorder with an impedance matching arrangement. A capacitor may be connected across the terminals of the apparatus to eliminate the effects of electrical interference. It is stated that it is possible to measure oxygen partial pressures down to 10<SP>-20</SP> atmospheres.
Patent GB-1013174-A (GB)
Title: A switching device
Inventor: BLEIBTREU ALEXANDER
IPC: H01H1/44
Filed: 1963-04-23
Abstract: 1,013,174. Transformers. E. SCHEUBECK [trading as MASCHINENFABRIK REINHAUSEN GEB SCHEUBECK KOMM.GES.]. April 23, 1963 [May 17, 1962], No. 15952/63. Heading H1T. In a tap-changing system having diverter resistances R1, R2 and double break switches 1, 2, 3, 4, 5 and 6 as shown in Fig. 1, operation begins with the closing of switch 3 and the opening of switch 1. If the current being passed is not (or not much) in excess of the rated current for the apparatus the arcs at switch 1 are extinguished, owing to the current passing through zero, before switch 4 closes. If, however, a heavy overload current is flowing the arcs at 1 do not extinguish at the first passage of the current through zero but continue to burn until switch 2 opens after closure of switch 4, when the circulating current flows through R2 connected to 4 but not through any other diverter resistance. There is however a fourfold break in the current path from U1 and the breaks at switch 2 are smaller than at switch 1 owing to the kinetics of the system so that on recovery the arc will strike first at 2 and the current will flow through both R2 and R1 reducing the recover voltage at switch 1 so that the arcs do not restrike there.
Patent GB-314519-A (GB)
IPC: F04D29/28
Filed: 1929-05-23
Abstract: 314,519. Junkers, H. June 30, 1928 [Convention date]. Rotary-tube fans and pumps.-The impeller of a centrifugal pump or compressor is made in one piece; radial holes of square cross section are machined in a disc of the requisite size, sectorlike spaces are machined out from the face of the disc, and then the parts 10 between the radial passages are removed. This leaves a rear wall 2 from which extends each wall 8 of the radial passages, the side walls 5, 7 of which form forked continuations of the blades 3 left between the sector-like admission spaces.
Patent GB-638027-A (GB)
Title: Improvements in or relating to a pumping apparatus particularly for deep wells
IPC: F04B47/08
Filed: 1947-06-18
Abstract: 638,027. Deep well pumps. SOBERG, A. S. June 18, 1947, No. 16082. Convention date, June 28, 1946. [Class 102(i)] A pumping apparatus particularly for deep wells comprises a casing 11 communicating with a supply of liquid, a cylinder 12 disposed adjacent the liquid and provided with an inlet check valve 16, a hollow bucket 18 adapted to reciprocate in the cylinder and having inlet and outlet bucket valves 21, 22, means associated with the bucket for neutralizing the static pressure of liquid in the casing, means for trapping a body of gas within the bucket and means communicating with the casing above the bucket capable of varying the static pressure of the liquid in the casing and thereby causing the bucket to reciprocate and produce a pumping action. The bucket is supported by a spring 24 and has an internal piston 38 slidable on a tube 23 for trapping the gas in its interior. The bucket is reciprocated on its down stroke by means of a piston 32 in a power cylinder 33 which applies pressure to the liquid column, and liquid below the bucket passes through valve 21 to force the piston 38 upwards and compress the gas until the pressure of the latter, plus the action of the spring 24, is sufficient to overcome the pressure of a spring 35 loading a delivery valve 37, whereupon further movement of the piston 32 will force liquid to be delivered. Upon the upstroke of the bucket effected by the spring 24 the compressed gas in the bucket moves the piston 38 outwards to discharge liquid from the interior through tube 23 and valve 22 into the liquid column. The latter may be primed through a pipe 29 whilst a bleeder valve 28 may be fitted to remove air. A strainer 13 is attached to the lower end of the cylinder and the valve 16 is fitted with a screwed nipple 17 adapted to be engaged by a probe for removal of the valve. In another embodiment the cylinder 12 may be made detachable from the casing and the piston 38 in the bucket may be dispensed with, the gas being replenished when necessary through a pipe leading from the top of the casing and communicating with the space below the bucket. In further embodiments the piston 38 may be replaced by a flexible diaphragm, a bladder or a metal bellows.
Patent GB-279357-A (GB)
Title: Improvements in driving mechanism for lathes and like machine tools
IPC: B23Q5/04
Filed: 1927-01-05
Abstract: 279,357. Schutte, A. H. Jan. 5, 1927. Turning.-A machine tool such as a turret lathe for working on bar stock comprises a driving pulley 19 connected to the driving shaft 23 of the machine through bevel gearing 21, vertical shaft 20, a bevel gearing 22. In this way the driving pulley may be moved about the axis of the shaft 20, to enable the machine to be placed at any angle to the transmission shafting 18 while maintaining the driving pulley parallel to the shafting. Fig. 1 shows a battery of machines arranged at 45‹ to the shafting, while the dotted lines show the maximum inclination permissable if the driving pulleys are parallel to the machine axis. An extension of the shaft 20 may be arranged to drive a pump 27 for the cooling liquid.
Patent GB-515370-A (GB)
Title: Improvements in collapsable tubular containers
IPC: B65D35/12
Filed: 1938-05-30
Abstract: 515,370. Collapsable tubes. HENDERSON, D. May 30, 1938, No. 16110. [Class 66] A collapsable tubular container comprises a body A, formed by winding a blank of vegetable parchment or other paper, the body being formed with a pleated inturned upper end 3 to which a non-metallic head portion, preferably of synthetic resin, is clamped. The head may comprise a neck and shoulder part 4, 5, and a superposed clamping collar 5a, Fig. 6, or one in which an annular member 8, Fig. 7, is forced into a peripheral recess at the underside of the shoulder part. The folds of the body are secured together by waterproof non-cracking glue which may be employed to secure the pleats of the end 3 together.