baber/WOPTO huggingface dataset:
Patent GB-849875-A (GB)
Title: Process for the alkylation of aromatic hydrocarbons
IPC: C07C2/68
Filed: 1959-03-13
Abstract: Aromatic hydrocarbons are alkylated in the presence of a boron trifluoride-modified refractory oxide (see Group III) and less than 0,8 gram. of boron trifluoride per gram. mol of alkylating agent. Specified hydrocarbons are benzene, toluene, xylenes, trimethylbenzenes, ethylbenzene, ethyltoluenes, n-and iso-propylbenzenes, hexyl-, nonyl-, dodecyl-, and pentadecyl-benzene, or -toluene, diphenyl, diphenylmethane, triphenyl, triphenylmethane, fluorene, stilbene, naphthalene, methylnaphthalenes, anthracene, phenanthrene, naphthacene and rubrene.  Alkylating agents are ethylene, propylene, butene-1, and -2, isobutylene, pentenes, trimer, tetramer and pentamer of propylene, dimer, trimer and tetramer of isobutylene, cyclopentene, cyclohexene, methylcyclopentene, methylcyclohexene, butadiene, isoprene, acetylene and corresponding alkyl chlorides and bromides.  Gaseous olefines can be used very dilute, e.g. gases obtained from refinery installations and containing less than 25% of olefines.  Suitable conditions are 0 DEG -300 DEG  C. and 1-200 atmospheres, preferably at least the aromatic hydrocarbon being liquid.  There may be 2-20 mols of hydrocarbon per mol of alkylating agent; undesired polyalkylated products may be recycled.  In a batch operation the amount of modified oxide may be 1-50% by weight of the aromatic hydrocarbon using contact times of 0,1-25 hours, in continuous operation the hydrocarbon is passed through a fixed bed of oxide at a LHSV of 0,25-20 vol./vol./hr. Suitable oxides are alumina (theta and gamma preferred), silica, titania, zirconia, chromia, zinc oxide, magnesia, silica-alumina, silica-magnesia, silica-alumina-magnesia, silica-alumina-zirconia, chromia-alumina and silica-zirconia.  Specification 307,809 is referred to.ALSO:Refractory oxides are modified with boron trifluoride; specified oxides are alumina, particularly gamma- and theta-crystalline forms, silica, titania, zirconia, chromia, zinc oxide, magnesia, silica-alumina, silica-magnesia, silica-alumina-magnesia, silica-alumina-zirconia, chromia-alumina, and silica-zirconia, which should preferably be nearly anhydrous. Alumina may be contacted with 2-50% by weight of boron trifluoride. In one method boron trifluoride is passed as a gas through a fixed bed of alumina, if desired diluted with hydrogen, nitrogen or helium, at room temperature to 300 DEG C.  A temperature wave passes through the alumina, from room temperature it rises to 60-150 DEG C.  In another method the boron trifluoride is passed through the alumina in solution in an aromatic hydrocarbon.  The amount of boron trifluoride complexed with the oxide reaches a maximum which increases with temperature increase.  The modified oxides are used as catalysts in conjunction with boron trifluoride in the alkylation of aromatic hydrocarbons (see Group IV(b)). Specification 307,802 is referred to.
Patent GB-508121-A (GB)
Title: Improved door opening and locking device for moving receptacles, for example skips
IPC: B66B17/08
Filed: 1938-03-22
Abstract: 508,121. Guided skip hoists. INTERNATIONAL COMBUSTION, Ltd., DAVIDSON, C. W., and HERBERT, S. L.. March 22, 1938, No. 8765. [Class 78 (iii)] The outlet door 2 of a receptacle 1 adapted to movein a fixed path, e.g. a skip used for winding materials in mines, is locked in its closed position against the weight of the material in the receptacle by a two-armed lever 6 pivotally mounted on the door, one arm 6a of the lever engaging a stop 9 fixed to the receptacle and the other arm 7 carrying means, such as a roller 8, adapted to co-operate with a fixed guide track 10. As the receptacle approaches the unloading point, the roller 8 enters the track 10 which rocks the lever out of engagement with the stop 9, the door then being supported by the roller and track. The shape of the track is such that, with continued upward movement of the receptacle, the movement of the roller is reversed allowing the door to open to discharge the contents of the receptacle. The door is then closed by a spring or counterweight. In the fully open position, the roller 8 lies below the opening to a vertical track leg 10a which it enters if the receptacle is overwound. The mechanism is duplicated on each side of the receptacle, the two levers 6 being mounted on the ends of a transverse shaft 5 carried in brackets 4 on the door.
Patent GB-923495-A (GB)
Title: Improvements relating to the production of silicon
Inventor: PARMEE JOHN LLEWELLIN
IPC: C01B33/02
Filed: 1959-03-13
Abstract: <PICT:0923495/III/1> Apparatus comprising a crucible of refractory material having an aperture 9 in its base, a tubular container 5 below the crucible, heating means, e.g. induction coils 11 associated with the crucible and means for maintaining a protective atmosphere in the crucible and in the space between the crucible and the mouth of the tubular container, is used for making silicon ingots.  The crucible and container may be located within an outer shield 3 of inverted bell shape.  Container 5 may be supported in the lower shield position 4 by a plug 7, e.g. of quartz wool.  The means for maintaining a protective atmosphere may comprise a crucible cover 12 having a pipe 13 through which an inert gas, e.g. argon is introduced.  Apertures in the wall of the crucible may permit escape of inert gas to the vicinity of the mouth of container 5.
Patent GB-160734-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K9/24
Filed: 1921-03-22
Abstract: 160,734. Sachsenwerk Licht - und Kraft-Akt.-Ges. March 22, 1920, [Convention date]. Casings; collecting-rings.-The slip-rings c of a dynamo-electric machine are mounted on the armature shaft between the armature and one of the bearings, and are enclosed in a chamber comprising the bearing shield b and a partition e dividing it from the interior of the machine. The partition e may be formed integral with the hearing shield or separate therefrom. The inspection opening g may be made airtight. The partition e has a central opening preferably larger in diameter than the slip-rings and packed by a ring d rotating with the shaft. An opening f is formed in the bearing shield to give free access of cooling-air to the interior of the machine. A protecting-plate h, Fig. 4, may be provided in the slip-ring chamber. In the event of an explosion occurring within the chamber, the ignited gases are cooled by the plate h in passing to the atmosphere.
Patent GB-802493-A (GB)
Title: Improvements in stop valves
IPC: F16K49/00
Filed: 1956-03-21
Abstract: 802,493. Valve accessories. DEWRANCE & CO., Ltd. March 21, 1956 [March 22, 1955], No. 8864/56. Class 135. A stop valve for use at high temperatures is provided with a valve spindle 1 of austenitic steel to which is fitted an externally-threaded sleeve 2 of ferritic steel, which sleeve cooperates with the screw thread of a spindle nut 4 also of ferritic steel whereby binding of the screw threads at high temperatures is avoided. The nut 4 is rotatably mounted by means of bearings 8 in a housing at the top of a bridgepiece 5 of ferritic steel. The bridge-piece has a section 6 cooled by fins 19 and is secured to a valve casing 9 of austenitic steel by a splitring 18. The sleeve 2 is secured against rotation on the spindle 1 by a key 16 and is held against a shoulder 13 by nuts 14. A hand wheel 12 is secured against rotation on the nut 4 by a key 10 and is held against a shoulder 21 by a nut 22.
Patent GB-266553-A (GB)
Title: Improvements relating to electric lamps
IPC: F21V17/00
Filed: 1926-04-01
Abstract: 266,553. Howes & Burley, Ltd., and Barlow, A. April 1, 1926. Mounting reflectors on lamp casings. - In a vehicle or like lamp in which the socket c of an incandescent electric lamp bulb d is mounted on the rear of the lamp body b, a reflector a is detachably mounted inside the lamp body in any desired position relative to the bulb by means of a stepped or equivalent bayonet joint connection. In the form shown in the Figure, a number of equally spaced pegs or projections e on the reflector selectively engage appropriate notches i formed in inclined bayonet slots f cut in a ring g on the inside of the lamp body by means of a spring h. The position of the slots and projections may be interchanged, and, instead of stepped bayonet slots, a plurality of slots of different depths may be employed.
Patent GB-772468-A (GB)
Title: Improvements in and relating to brassieres
IPC: A41C3/04
Filed: 1955-03-26
Abstract: 772,468. Brassieres; breast pads. PAUK, K. March 26, 1955, No. 8908/55. Class 141. A detachable pad for a brassiere comprises an initially flat circular member of absorbent material having a radial cut 2. In use, the pad is deformed into a conical shape by overlapping the edges of the cut, as in Fig. 3, the overlapped portion being located towards the lower part of the breast, and the upper portion of the pad having a projecting tab 3 for attachment to a brassiere. The pad comprises outer layers of gauze enclosing one or more absorbent paper discs which in turn enclose cellulose wool layers and a perforated disc of moisture-resistant material. The pads are incorporated in the breast pockets 10, Fig. 6, of a brassiere by engaging the tabs 3 in the loops 17. The breast pockets are interconnected by adjustable straps 18, and are also connected to an elastic strip 13 by adjustable body-encircling straps 12. Clips 16 are provided for releasably connecting the breast pockets to the shoulder straps.
Patent GB-687362-A (GB)
Title: Method of producing a foam-producing composition
IPC: A62D1/02
Filed: 1950-04-12
Abstract: Partially hydrolysed proteins are prepared by partially hydrolysing proteinaceous material with heat in the presence of an alkaline earth metal hydroxide, substantially neutralizing the resulting solution by the addition thereto of a water-soluble material furnishing ammonium ions and furnishing bicarbonate ions, in an amount to convert substantially the alkaline earth metal in the solution to an insoluble salt, heating to remove the ammonia formed, and removing the insoluble salt from the solution.  The neutralizing material may be ammonium bicarbonate or a combination of salts, one of which furnishes ammonium ions and the other bicarbonate ions, e.g. a mixture of ammonium chloride and sodium bicarbonate.  The neutralizing material may be added before, during or after concentrating down the initial hydrolysate.  The heating to remove ammonia also converts any alkaline earth bicarbonate to the insoluble carbonate.  Proteinaceous starting materials mentioned are albumins, globulins, prolamines, nucleoproteins and chromoproteins and more particularly horns, hoofs, hair, blood, soya meal, pea meal, corn meal and gluten. Various additives may be added to the foam-producing solution (see Group XXI).  In examples, an aqueous suspension of starch-free gluten and lime is heated at its boiling-point for 5 hours, filtered to remove undissolved lime and lime soaps resulting from saponification of oils in the gluten, and neutralized by addition of aqueous ammonium bicarbonate and subsequently filtered. Specification 620,989 is referred to.
Patent GB-493057-A (GB)
Title: Masks for the prevention and relief of allergic respiratory complaints
IPC: A62B18/00
Filed: 1937-03-30
Abstract: 493,057. Respiratory appliances. BIEDERMAN, J. B. March 30, 1937, No. 9044. Convention date, April 11, 1936. [Class 81 (ii)] A mask 1 for use in cases of asthma and the like is formed with an inlet aperture 4 having in front of it electric precipitation means for pollen and like particles comprising one or more insulated. screens 11, 12, electrically polarized by connection to the poles of a dry cell 16 ; preferably two screens connected one to each pole are employed. The screens are of fine wire mesh secured in a ring and are mounted in a filter housing 6 provided with internal shoulders 9, 10, and having a screw-on retaining ring 8. Exhaling valves are provided in the upper part of the mask. The Specification as open to inspection under Sect. 91 describes the use, in place of a cell for polarizing the screen or screens, of substances of negative polarization such as aluminium or iron hydroxide, or of positive polarization such as iron sulphide, the substances being applied to screens which may be of fabric or gauze. This subject-matter does not appear in the Specification as accepted.
Patent GB-371139-A (GB)
Title: Improvements in or relating to the manufacture of telephone cables
IPC: H01B13/02
Filed: 1931-03-25
Abstract: 371,139. Telephone cables. TELEFONAKTIEBOLAGET L. M. ERICSSON, 33, Kungsgatan, Stockholm. March 25, 1931, No. 9166. Convention date, April 1, 1930. [Class 36.] A device for compensating cross-talk couplings in telephone cables comprises means for variably guiding the conductors during the twisting operation, a measuring device connected to the conductors and adapted to respond to variations in the conductor coupling and means actuated from the measuring device to vary automatically the twist. In the arrangement shown in the Figure, conductors 1 .. 4 wound from rolls 5 .. 8 are twisted on to a cable rail 9. The conductors pass through holes in a guide plate 10 and converge towards a nipple 11. The rolls 5 .. 8 have stationary journals, the reel 9 rotating about the axis of the cable 12. The conductors are connected on one side to the corners 21 .. 24 of a Wheatstone bridge D through sliding contacts 13 .. 16, the opposite ends of the conductors being connected to a terminal 17 .. 20 of the reel 9 electrically insulated from each other. Condensers C13, C14, C24, C23 are included in the arms of the bridge D, and between the points 21, 22, an alternating current source 25 and transformer 26 are connected. A telephone receiver 27 and transformer 28 are connected between the points 23, 24. Coatings 29, 30 of a balance condenser K are connected between the points 23, 24, the rotatable coating 31 being connected to the point 21. The parts of the conductors in process of twisting are actuated by devices A, B, resembling shears, the pivots 32, 33 of which are journalled in stationary bearings, the legs 34, 35 carrying rolls 36, 37 at their outer ends respectively. Each roll is adapted to actuate a pair of conductors to press them apart or nearer together. The movement of the rolls 36, 37 is controlled by lines 40, 41 carried over drums 46, 47 which are hand operated by levers 48, 49. Helical springs 54, 55 tend to bring the rolls normally out of engagement with the conductors. In operation, balance disturbance between pairs is indicated by a sound in the telephone receiver 27 and is compensated during the twisting operation by actuation of the devices A, B. In a modified construction, direct positive guidance of the conductors is carried out automatically, relays actuated from a balance condenser moving the devices A, B.
Patent GB-374546-A (GB)
Title: Improvements in fac-simile tele-printing and the like
IPC: H04N1/12
Filed: 1931-03-26
Abstract: 374,546. Copying -telegraphy. BYRON, D. H., Brook House, Buckhurst Hill, Essex. March 26, 1931, No. 9183. [Class 40 (iii).] In a transmitting arrangement for pictures, printed matter or films, in which one component of the scanning is effected by longitudinal movement of the member carrying the matter to be transmitted, the second component of the scanning is accomplished by the use of a number of devices, sensitive to direct or indirect thermal radiation and sequentially connected to the line by a selector switch. A number of fine-wire thermo-couples b mounted adjacent a film or tape a are subjected to reflected radiation from the printed matter The film or tape is moved slowly longitudinally, and the thermo-couples are individually and sequentially connected to contacts d of a rotating switch d, e. A screen c shields the thermo-couples against direct illumination from the light-source g, and a thermo-couple h, subjected to strong illumination, transmits a synchronizing impulse when the brush e reaches the contact j. The thermo-couples are arranged in an oblique line with respect to the film a when stationary to allow for the relative motion of the film. In the case of a picture on a transparent film or tape, the thermo-couples are subjected to direct radiation through the film or picture carrier. Specifications 286,262, 288,882, [both in Class 40 (iii), Telegraphs, Electric], and 345,317 are referred to.
Patent GB-435276-A (GB)
Title: Improvements in or relating to loom pickers
IPC: D03D49/36
Filed: 1934-03-24
Abstract: 435,276. Loom pickers. DAWSON, J., 13, Bishop Street, Christ Church, Accrington, Lancashire. March 24, 1934, Nos. 9265/34 and 4721 /35. [Class 142 (iii)] The body and foot of a picker are formed by folding the limbs 22, 23, 24, Fig. 3, of a cruciform blank of hide, while the bearing for the picker spindle is made by folding the limb 21 around a mandrel to form a tube 9. The ends of the folded limb 21 abut at 25, Fig. 1, against the arms 11, 12 of the picker. In the case of overpickers, a slot 20 is stamped to receive the picking strap. The cut-away parts 19, 20 of the blank may be left in situ or be used as packing pieces for forming a thick foot for the picker. For heavy underpickers, the cut-out parts 17, 18 may be used as reinforcing strips for the spindle-guiding tube.
Patent GB-886323-A (GB)
Title: Nuclear reactors
IPC: G21C3/36
Filed: 1959-03-17
Abstract: 886,323. Nuclear reactors. UNITED STATES ATOMIC ENERGY COMMISSION. March 17, 1959 [March 18, 1958], No. 9265/59. Class 39(4) Vapour is generated in one region and superheated in another region of a liquid moderated reactor. Fig. 4 shows a H 2 O-moderated reactor with an annular boiling region 18 surrounding a superheating region 19. The region 19 is enclosed by a wall 22 extending above the water level 39 and contains tubes 21 sealed into plates 25, 44; the wall between the plates is perforated to allow moderator to circulate. In another arrangement the upper plate 44 is omitted and the tubes 21 are as long as the wall 22. Water circulates through pipes 15, 16. Fresh water to replace that boiled away enters through pipe 14; steam is separated from water at 38 and passes down the tubes 21 to an outlet 13. Cruciform boiling region control rods and cylindical superheating region control rods, of boron steel, are provided. Fig. 2 shows a superheater fuel element. A double walled stainless steel tube contains perforated sleeves 32 of fuel clad in stainless steel. The tube is double walled; the outer wall 31 is sealed to the lower grid plate 25 but the inner wall is free, and both walls are free, though sealed to each other, at the top end. Stagnant steam between the walls acts as a thermal insulator.
Patent GB-358013-A (GB)
Title: Improvements in ammonia oxidation process
IPC: C01B21/26
Filed: 1930-03-22
Abstract: <PICT:0358013/III/1> In the oxidation of ammonia the reaction products are conveyed away from the catalyst as rapidly as possible and are immediately cooled, e.g. to a temperature below 500 DEG  C. The gas velocity is preferably greater than 20 ft. per second.  The Figure shows a suitable apparatus for carrying out the process, in which the conduit 6 beyond the catalytic element 4 is provided with a cooling jacket 8.
Patent GB-663414-A (GB)
Title: Improvements in or relating to screw thread cutting devices
IPC: B23G1/46
Filed: 1949-04-06
Abstract: 663,414. Tapping &c. attachments. ALFREDEEN, U. A. April 6, 1949 [April 17, 1948], No. 9362/49. Class 83 (iii). In a screw-thread cutting attachment comprising driving and driven members 14, 40, respectively and torque-transmitting means interposed between these members and comprising a coupling device 38 for directly transmitting rotation between the members and balls 22 for reverse operation rotatably housed in a stationary retainer 24 and running in confronting races, the latter are provided in the member 14 and in an annular member 30 and have a cross-section in the form of circular arcs of larger radius than that of the balls. The coupling device 38 consisting of frictional material is secured to the tool spindle 40 and is formed with an annular conical portion 44 for engagement with an annular groove 36 in the member 14 and with a tapered portion 46 for engagement with the interior of the member 30. To increase the frictional effect, the device 38 is provided with spring-actuated balls 54, 62 adapted to engage recesses 56, 58 and 68 in the members 14, 30. In a modification, the profile of the ball races is formed by a plurality of straight lines or by a combination of one or more straight lines and a curved line. Operation. After locating the screw-tap 42 in contact with the hole to be screw-threaded, the spindle 10 and member 14 are pressed towards the work until the portion 44 engages the groove 36 so as to bring the tap into screwcutting engagement with the work. When the tap reaches the end of the bore, the portion 44 slides with respect to the groove 36 and the balls 54, 62 produce a rattling sound when passing the recesses 56, 68 to indicate that the screw-cutting operation is finished. The spindle 10 and member 14 are then moved away from the work to disengage the portion 44 from the groove 36 and bring the portion 46 into engagement with the member 30. During the entire operation, the balls 22 are kept stationary rotationally by means of an arm 80. Chucks.-The screw-tap 42 is entrained by the spindle 40 by means of an attachment 74 of known type and is held in the spindle by means of an annular member 76 actuated by a sleeve 78 adapted to be screwed on the spindle. The member 76 consists of a spiral wire the turns of which are bent so as to form a ring with rubber moulded between the individual turns of the spiral.
Patent GB-234594-A (GB)
Title: Improvements in reinforced concrete slab walls
IPC: E04B2/02
Filed: 1924-04-14
Abstract: 234,594. Leeming, E. L. April 14, 1924. Slabs.-Ribbed concrete slabs for cavity walls are provided with single wires c which project from the top or bottom edges or both edges and are tied around reinforcing rods C in the stanchions which are cast in situ.
Patent GB-1102252-A (GB)
Title: Improvements in discharge lamps
IPC: H01J61/34
Filed: 1965-03-05
Abstract: 1,102,252. Discharge lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 5 March, 1965 [6 March, 1964; 23 Feb., 1965], No. 9485/65. Heading HID. In a gas and/or vapour discharge lamp comprising a discharge tube 1, 2 sup ported within an envelope 6 wherein an end of the dis charge tube extends through an aperture in a plate 7 extending trans versely to the central longi tudinal axis of the enve lope, the plate 7 is resi liently centred inside the envelope by means of a centring structure com prising two substantially U - shaped blade spring portions 8, 9 arranged sym metrically about the centre of the plate, the inner limb 10, 11 of each spring por tion being connected to the plate so that these inner spring limbs bear directly or indirectly (e.g. through electrically and/or therm ally insulating members against the discharge tube and the outer limbs 12, 13 bear directly or indirectly against the envelope 6 and extend towards each other in an arcuate fashion. The ends of the arcuate portions 14 engage in a collar 15 surrounding a pinch 16 of the envelope 6. Additional springs 17 and (18) (not shown) may be connected to the plate 7 to bear at their ends against the envelope. A pip 20 engages an aperture in a plate 19 supported by a similar arrangement of springs of which the additional springs 26 and (27) or the modified additional springs (35) (Fig. 5, not shown) bear against the bend 5 of the discharge tube. The envelope 6 may have an internal heat insulating coating of transparent conductive tin oxide.