baber/WOPTO huggingface dataset:
Patent GB-1419645-A (GB)
Title: Production of strong nitric acid
IPC: C01B21/26
Filed: 1973-05-15
Abstract: 1419645 Strong nitric acid E I DU PONT DE NEMOURS & CO 15 May 1973 23128/73 Heading C1A HNO 3  of concn. of at least 90% by wt., e.g. up to 100%, is prepared by continuously (a) absorbing gaseous an equilibrium NO 2 /N 2 O 4  mixture in aq. HNO 3  to form 75-85% by wt. HNO 3 , (b) reacting the HNO 3  with O 2  and H 2 O at elevated pressure to form 80-90% by wt. HNO 3 , (c) vaporizing part of the N 2 O 4  and then (d) distilling the acid to produce the strong acid. Step (a) may be carried out at a pressure of 80-120 p.s.i.g. and a temp. of 0-25‹ C. to produce the 75-85% HNO 3  containing 15-30% dissolved N 2 O 4 . Step (b) may be performed at a pressure of 300-1600 p.s.i.g. and a temp. of 40-100‹ C. The vaporization step (c) may be by depressurization to 105-155 p.s.i.g. or by bleaching with air, thereby removing 50% of the N 2 O 4 . The distillation step (d) may be operated at atm. pressure. The N 2 O 4 -containing gaseous effluent from step (a) may be scrubbed in weak HNO 3  or water to produce a weak HNO 3  which on distillation gives a distillate of concn. less than 5% HNO 3  and bottoms of concn. 55-68À5% HNO 3 , the bottoms being used as an H 2 O source in step (b). The N 2 O 4  may be obtained by the catalytic oxidation of NH 3  and oxidation of the NO formed. The cooled and separated H 2 O from the catalytic oxidation having a concn. of 35-55% HNO 3  may be distilled to give distillate of concn. <5% HNO 3  and bottoms of concn. 55-68%, one or both fractions being used as a source of H 2 O for step (b).
Patent GB-1493344-A (GB)
Title: Constructional members
IPC: E04C2/38
Filed: 1974-10-14
Abstract: 1493344 Laminated panels G W WYNN Ltd 14 Oct 1974 [15 July 1973 7 Aug 1973 (2) 8 Jan 1974] 23199/73 37320/73 37321/73 and 00744/74 Heading B5N [Also in Divisions E1 and F2] A board for use in shelving containers and building comprises a substantially planar sheet or layer 2<SP>1</SP> having a plurality of spaced parallel ribs 4<SP>1</SP> extending longitudinally of the board, said ribs being resiliently deformable in the transverse direction for the interconnection of two similar boards without substantial deformation of the planar sheet or layer. The boards may be connected together as shown to form a composite laminated panel or at right angles to form a corner. The sheets are preferably wood and the ribs are preferably resilient plastics faced with plywood in which case the plastics only, preferably provides the bend to the sheet. The ribs may have integral harder facings or have facings provided by separate clip on members. Straight angle section or T-section dowel like connectors are provided for joining the boards together to form composite panels and structures and for joining the panels together to form composite structures. Portions of the sheets and ribs may be cut away and separate edge fillets are also provided to give a flush finish to such structures. The connectors may be of a thickness greater than that of the boards and two boards may be interconnected to form a panel up to twice the thickness of a single board. The ribs on the boards may be of the same or different width and/or spacing and separate infill ribs may be provided. In a modification the ribs and connectors are of dovetail cross-section.
Patent GB-933408-A (GB)
Title: Beryllium alloys
Inventor: RAINE THOMAS
IPC: G21C3/07
Filed: 1961-06-27
Abstract: An alloy resistant to corrosion by hot, moist, carbon dioxide has the following percentage composition by weight: Ca 0.1-3; a metal selected from the group Zr, Nb, V or Ti 0.1-2; Be and impurities the remainder.  Specification 911,381 is referred to.
Patent GB-533314-A (GB)
Title: Improvements in and relating to ignition devices for internal combustion engines
IPC: F02P7/02
Filed: 1939-08-11
Abstract: 533,314. Rotary distributers. BRITISH THOMSON-HOUSTON CO., Ltd., and POLLARD, J. H. Aug. 11, 1939, No. 23232. (Class 38 (v)] To prevent undesired secondary sparking at distributer contacts due to ionization at high altitudes, the distributer is put in series with an auxiliary " distributer," all the segments of which have been electrically connected together, this auxiliary distributer being in a position to supply current to the main distributer each time a spark is due from the latter. In the form shown, both distributers rotate together and current passes from the magneto coil 18 through a lead 17 to a semicircle of connected contacts 15 belonging to the auxiliary distributer. From one of these it passes to one of two brushes 16 connected to a brush 19 or 20 and thence to one of the two semicircular tracks of contacts 14 of the main distributer. Reference has been directed by the Comptroller to Specification 527,126.
Patent GB-353267-A (GB)
Title: Roller folding machine for the manufacture of bulked or loosely folded envelopes
IPC: B31B50/56
Filed: 1930-08-01
Abstract: 353,267. Making envelopes. WINKLER, A. and DUNNEBIER, M., Neuwied, Germany. Aug. 1, 1930, No. 23285. Convention date, April 9. Addition to 337,329,. [Class 94 (ii), Paper bags &c.]. [Class 94 (ii).] In a machine for making " bulked " or loosely folded envelopes, in which the bottom flap a is folded over by a roller 40 and counter roller 41, the envelope W being deflected upwards by a swinging plate 52 which allows the crease c of the closure flap to enter between a folding roller 53 and the counter roller 41, as described in the parent Specification, a bar d, extending the length of the roller 53, is arranged on the roller in front of a segment which conveys the envelope forwards. The bar has an inclined surface e which slants away towards the centre of the roller and extends to the front edges 57 of the converging segment. By adjusting the position taken up by the crease c in the acute angled space between the surface e and the counter roller 41, the looseness of the fold is adjusted and if the part d of the bar is used, sharp folds may be produced. The bar d is longer than the width of the largest envelope and its surface is flush with those of the ends of the roller and the conveying segment.
Patent GB-645487-A (GB)
Title: Improvements in or relating to the manufacture of sectional heat-exchangers
IPC: B23K11/093
Filed: 1947-08-22
Abstract: 645,487. Making heat exchangers. BINDER, H. G. Aug. 22, 1947, No. 23304. [Classes 83 (ii) and 83 (iv)] Electric welding.-In making radiators by resistance welding flanged half-sections a, b, the track k of the electrodes g, h is mechanically maintained at a fixed distance from the flange root o. The electrodes g, h are chamfered to bridge the root radius i and are guided lengthwise by the steep sides n of the pressing and at the ends by the straight-sided boss. A steepsided jig, Fig. 9 (not shown), may be secured to one or both half-sections to act as a guide. One chamfered and one plain roller electrode may be used. Metal or insulating discs, Fig. 12 (not shown), may be secured to the front faces of roller electrodes, or metal or insulating discs u, Fig. 13, may be secured to the rear face of one of the electrodes h to engage the outside flange edges d. A roller mounted perpendicularly to the roller electrodes may engage the flanges, Fig. 14 (not shown). The flanges may be given a preliminary rolling operation to close them and reduce the electrode pressure required. Untrimmed shells may be welded and then trimmed along the weld track. A roller-electrode trimming tool, Fig. 16, has a non-cutting back projection x to prevent the chamfer from shifting laterally. Specifications 385,608, 495,445, [both in Group XIII], 545,522, 541,497 and 540,051 are referred to.
Patent GB-981011-A (GB)
Title: Over-run braking mechanism
Inventor: GREGORY CYRIL
IPC: B60T13/58
Filed: 1962-06-18
Abstract: 981,011. Brakes. CARLIGHT TRAILERS Ltd. June 13, 1963 [June 18, 1962], No. 23324/62. Heading F2E. A device for preventing operation of an over-run brake mechanism on a trailer vehicle of the kind which includes a draw bar shaft movable relative to a housing to apply the trailer brake, comprises electrically operated means acting to prevent such relative movement and which is controlled by a switch operable by the occupant of a towing vehicle. In one embodiment, Figs. 1 and 2, a solenoid 15 of single-acting type acts on a semi-floating link 16 engaged in an aperture 18 in a lever 12 which is pivoted on a vertically arranged pin 13 on the housing 4. A spring 14 normally retains lever 12 in an inoperative position clear of a nose 2 on draw bar shaft 3 so that the latter is free to slide within housing 4 and actuate the trailer brakes through a lever 6 and linkage 7 when the trailer over-runs the towing vehicle. On operation of a switch (not shown) on the towing vehicle, the solenoid is energized and its armature moves lever 12 about pin 13 into a position obstructing movement of nose 2. Additional switch means may be operated automatically when the towing vehicle is driven forwardly to prevent operation of the solenoid. A handoperated brake lever 10 associated with a locking rack 11 is also provided for applying the trailer brakes manually. A damper 5 damps movement of shaft 3 in normal operation of the over-run brake. In another embodiment, Fig. 4, solenoid 28 acts through links 29, 30 on a lever 26 pivoted on a horizontal pin 27 but otherwise functioning exactly as the lever 12 of the first embodiment. The solenoid may in this case be double-acting. In a further embodiment, Fig. 6, solenoid 40 is mounted on the housing 4 and its armature carries a pawl projecting through an aperture in the housing so as to engage, when the solenoid is operated, a rack 35 on the draw bar shaft 3. A spring 38 withdraws the pawl when the solenoid is de-actuated. Alternatively, the shaft 3 may simply be provided with an aperture to receive the solenoid armature.
Patent GB-302880-A (GB)
Title: Improved method of manufacturing articles by punching and pressure
IPC: B21D31/04
Filed: 1928-08-14
Abstract: 302,880. Traverso, C. Aug. 14, 1928. Drawings to Specification. Expanded metal.-Articles such as small baskets and electric lamp guards are produced from sheet metal by slitting and expanding, the article being given the shape desired during the expanding operation. The slits may vary in form and arrangement and may extend over the whole or a part of the sheet.
Patent GB-1101674-A (GB)
Title: Envelope for electrical devices
Inventor: JENNINGS JO EMMETT
IPC: H01H33/66
Filed: 1965-06-02
Abstract: 1,101,674. Fusible cut-outs. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 2 June, 1965, No. 23485/65. Heading HlN. [Also in Division H21 A re-usable sealed enclosure for H. T. protective device such as a circuit-breaker or a (copper) fuse link 27 comprises a cylindrical insulating shell 2 having a metal closure plate 6 sealed to one end whilst the other end is closed by a metal plate having its flange 8 sealed (e.g. brazed) to an annular flange 9 sealed to shell 2, removal of plate 7 permitting removal of the fuse link 27 and the shielding arrangement 11, 12, 13, 14 for cleaning or replacement. The shielding arrangement comprises ceramic rods 18 carrying overlapping stepped cylindrical members such as 12, 14 of copper, nickel, molybdenum or stainless steel and is held by the plate 7 through spacers 22 and springs 23. The fuse link 27 is held in slight tension. A sleeve 29 on its lower end is screwed into a threaded hole 33 in a resilient bracket member 31 by rotation of plate 7 while its upper end is held in a socket block 42 carried by a resilient curved tube 39. The enclosure may be exhausted, after sealing, through tube 37 and, instead of having a vacuum therein, may be filled with nitrogen or a mixture of inert gases. A flat fuse link with heat sinks (Fig. 4, not shown), may be used.
Patent GB-1032304-A (GB)
Title: Locking apparatus for a container for valuables, for example, a safe
IPC: E05C9/00
Filed: 1964-06-05
Abstract: 1,032,304. Locking devices. V. CORNARO. June 5, 1964 [Oct. 3, 1963], No. 23516/64. Heading E2A. A locking apparatus for a container for valuables comprises a lock 5 disposable in and removable from a wall portion 1 of said container in the unlocked condition of the locking apparatus, and a locking bolt 14 carried by said wall portion, said lock comprising a housing and a locking bolt actuating mechanism, said locking bolt being displaceable by said mechanism into a locking position only after insertion of said lock in said wall portion. In the embodiment shown the wall portion is the door 1 of the container with a recess 3 for receiving the lock actuating mechanism 5, the mechanism being held in place by a leaf spring 6, a shoulder 7 of which engages an opening 8 in the rear wall 1b of the door. The element 10 comprises a slide member which is displaced vertically out of the housing 4 by means of a key. In the upper part of the door there is a bolt 14 displaceably supported for vertical upward movement within a sleeve 15. The bolt has a shoulder 17 which bears against a door ledge 16 in its lowest position and a surface 14a which bears against the upper surface 10a of the slide member 10 so that on moving the member 10 upwardly the bolt 14 is simultaneously moved upwardly to protrude from the door wall into an opening in the frame of the door. During unlocking the slide member 10 is pulled downwardly allowing the bolt 14 to be withdrawn into the door under its own weight. In another embodiment the lock actuating mechanism has a further bolt which co-operates with the slide member 10. The slide member 10 is formed with an inclined slot in which a cylindrical pin rigidly connected to the additional bolt slides so that when the slide member extends the bolt 14 it also extends the bolt 23 (Fig. 3, not shown). There may also be provided at least one additional bolt in the door preferably moving vertically but extending from the bottom of the door. The two bolts may be operated simultaneously by the horizontal movement of a double wedge member, a toggle device the two links of which are connected to the slide members or a rotatable cam disc which co-operates with rollers on the inner ends of the bolts.
Patent GB-150310-A (GB)
Title: Improved temperature controlled apparatus for electric irons for preventing their overheating
IPC: H05B1/02
Filed: 1920-08-11
Abstract: 150,310. Kl÷tzli & Sohn, T. Aug. 11, 1919, [Convention date]. Plug couplings.-A thermal switch for an electrically-heated iron comprises a spring-controlled sliding member 15 held in position to close circuit by a pivoted pawl 20 which is moved to release the member and break circuit by the expansion of a bar 24. The parts may be permanently mounted on the iron, or they may be contained within a casing 17 removably attached to the plug 5 provided with the usual sleeves 3, 4 to engage the terminal pins 2. The switch is constituted by two bent spring blades 12, 13 normally pressed together by a pin 14 on the sliding member 15. The bar 24 may be secured at one end to the iron as shown or it may be connected by heat insulation with a parallel bar mounted on the casing 17.
Patent GB-365033-A (GB)
Title: Improvements in the treatment of metals and alloys
IPC: C21D8/00
Filed: 1930-08-07
Abstract: In a modification of the process described in the parent Specification, metals and alloys such as steel, iron, copper and its alloys or aluminium are treated with a modifying substance comprising one or more of the following elements, viz. zinc, copper, boron, nickel, chromium, molybdenum, aluminium, silica, manganese, tin and carbon or nitrogen containing substance, other than gases, at a moderate temperature, far below the melting point of the metal &c. treated.  The modifying substances may have a melting point higher than the temperature at which the process is carried out and may be in the form of fine powder in which the iron &c. is embedded.
Patent GB-866431-A (GB)
Title: Improvements in or relating to magnetic strip material
Inventor: LYNCH ARNOLD CHARLES
IPC: H01F1/147
Filed: 1957-07-26
Abstract: 866,431. Magnetic sound records. POSTMASTER-GENERAL. July 21, 1958 [July 26, 1957], No. 23778/57. Class 40 (2). [Also in Group XXXV] A magnetic strip material comprises a layer of ferro-magnetic metal bonded to a layer of non-magnetic metal of high electrical resistivity. The strip may form a composite body consisting of layers of the two metals and rolling the body to produce the required composite strip. The body may comprise a compacted powdered body which is sintered and rolled to a desired thickness. The body may also comprise a bar formed by layers bonded by hot pressure welding. The magnetic layer may consist of 80% nickel, 8% iron and 12% molybdenum, and the non-magnetic layer 76% nickel, 8% iron and 16% molybdenum which composition is considered to be non-magnetic at normal atmospheric temperatures when the Curie point is exceeded. The proposed total thickness is 10 microns of which the magnetic layer is 1 micron. The strip is not confined to two layers and may be multilayered and consist of alternate magnetic and non-magnetic layers. Specification 866,429 is referred to.
Patent GB-1512898-A (GB)
Title: Apparatus for treating sewage
IPC: C02F1/00
Filed: 1976-06-09
Abstract: 1512898 Treating sewage HEILMANN & LITTMANN BAU-AG 9 June 1976 [11 June 1975 10 Oct 1975 4 Nov 1975] 23865/76 Heading C1C Apparatus for treating sewage comprises a lined earth tank i.e. a tank initially constructed by earth excavation having a periphery comprising a semicircular portion and an elongated arcuate portion; two radially spaced apart circular partition walls which are disposed radially within and are spaced from the semi-circular portion and which are concentric with the latter and with each other; feed means for feeding sewage to be treated to a settling space which is disposed radially inwardly of the radially inner partition wall; an activated-sludge space which is disposed between the partition walls and which is arranged to receive sewage from the settling space; a secondary clarifying space which is arranged to receive sewage from the activatedsludge space and which is disposed between the said periphery and the radially outer partition wall;, and discharge means for discharging treated sewage from a region of the secondary clarifying space bounded by the elongated arcuate portion.
Patent GB-583760-A (GB)
Title: Improvements in or connected with a traversable container or skip for use on a monorail system
IPC: B61B13/04
Filed: 1944-11-30
Abstract: 583,760. Single rail vehicles. AVELING- BARFORD, Ltd., PENN, O. S., and GREEN, N. D. Nov. 30, 1944, No. 23907. [Class 103 (iv)] A skip a for use on a monorail system has the framework f hinged to a leading and trailing bogey unit c, d each mounted by means of a flanged wheel c', d' on the head of the monorail b and each having lateral connection on either side and with the rail or a part thereof through spring-loaded rollers e. The skip a is mounted on trunnions a<1> supported on brackets f<1> from the frame f. Extensions f<2> of the frame carry antifriction rollers on which are mounted track rings c<2>, d<2> respectively which form a part of the pivotal means of mounting the bogey units within the respective frames. The guide rollers e are mounted in brackets h hinged to lugs k carried on the underside of the track ring and are pressed against the bottom flange b' or the web of the monorail by springs j. The skip may be propelled by a power unit g or by gravity. Specification 577,882, [Group XXX], is referred to.
Patent GB-763296-A (GB)
Title: Apparatus for heating vessels and their contents by products of combustion
IPC: F22G1/16
Filed: 1954-08-17
Abstract: 763,296. Heating and cooling liquids in bulk. REAVELL, J. A. June 6, 1955 [Aug. 17, 1954; May 2, 1955], Nos. 23912/54 and 12668/55. Class 64(3) The contents of a vessel 10 are heated by combustion gases into which a controlled amount of secondary air is admitted, the mixture of secondary air and combustion gases being forced along a given path relatively to the vessel to be heated. The said path may comprise a tube coil 13 within the vessel or a jacket (Fig. 4 not shown) surrounding the vessel. Hot gases from an oil fired combustion chamber 16 are mixed with secondary air from a surrounding chamber 18. The quantity of secondary air entering the chamber 18 through slots 22 is regulated by a damper consisting of a rotatable disc 23 having slots which can be brought into register more or less with the slots 22. The mixture of combustion gases and secondary air is drawn through the coil 13 by a blower 28 to heat the contents of the vessel 10. Valves are provided so that subsequently the contents of the vessel 10 may be cooled either by air drawn through the coil by the fan after cutting off the flow of combustion gases and secondary air, or by a cooling liquid passed under pressure through the coil.
Patent GB-1346095-A (GB)
Title: Method and apparatus for the open and/or closed loop control  of viscosity dependent processes
IPC: B29C48/92
Filed: 1971-04-19
Abstract: 1346095 Injection moulding; extrusion moulding R POHLMAN and G MENGES 19 April 1971 [14 March 1970] 23980/71 Heading B5A [Also in Divisions G3 and H4] A viscosity dependent process, e.g. one using molten plastics for the production of injection moulded parts, blown hollow parts, fibres, tubes or foils, is regulated in dependence on values of ultrasonic wave attenuation and/or wave velocity obtained by transmitting ultrasonic waves through a flowing viscous mass. In the Fig. 1 embodiment measurement head 8 provides ultrasonic waves passing transversely to the flow path of a plastics mass being conveyed to extruder nozzle 7 from hopper 4 by a worm conveyer 5 in a heated channel 6. Ultrasonic measurements are made in a throughtransmission or pulse-echo mode by means of pulse transmitter/receiver 9. Velocity and attenuation values derived by unit 10 are fed to data processor 11 which computes a viscosity value, compares this with a reference viscosity value, and supplies any difference signal to members 12 and 13 which regulate, e.g. the channel 6 heaters, or the supply of material to the extruder.
Patent GB-1469857-A (GB)
Title: Thiazolo isoquinoline derivatives
IPC: C07D513/04
Filed: 1974-05-30
Abstract: 1469857 Thiazoloisoquinoline derivatives CHINOIN GYOGYSZER ES VEGYESZETI TERMEKEK GYARA RT 30 May 1974 [30 May 1973] 24044/74 Heading C2C Novel compounds of the Formula I wherein A is -S-C= Y attached either way, R<SP>1</SP> and R<SP>2</SP> are independently hydrogen, hydroxy, alkoxy or aralkoxy; R<SP>3</SP> is hydrogen; alkyl optionally substituted by hydroxy, alkoxy, or halogen; aryl optionally substituted by hydroxy, alkoxy, nitro or halogen; nitrile; amide; carbalkoxy; acid halide; amidoxime or amidine and Y is oxygen, sulphur or =N-R<SP>4</SP>, wherein R<SP>4</SP> is hydrogen, alkyl optionally substituted by hydroxy or halogen, aryl optionally substituted by hydroxy or halogen; a carboxylic acyl, alkylsulphonyl or arylsulphonyl, or a salt thereof, may be prepared by reacting a compound II wherein X is hydrogen, halogen or mercapto, with a reactive carbonic acid derivative effective to replace X by a desired bridging group A, provided that when X is hydrogen or halogen said reactive carbonic acid derivative contains a sulphur atom directly attached to the carbon of the carbonic acid group, optionally followed by interconversion of radicals R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and Y within the scope of their definitions. 5 - [α - Cyano - α - (6,7 - dimethoxy - 3,4 - dihydro - 1 - isoquinolyl)] - methyl - isothiuronium bromide is prepared by reacting 1-(α-bromo)- cyanomethylene - 6,7 - dimethoxy - 1,2,3,4- tetrahydroisoquinoline with thiourea. N - (α - Chloro - phenylacetyl) - homoveratrylamine is prepared by reacting homoveratrylamine with α-chloro-phenylacetyl chloride. Pharmaceutical compositions of the compounds I with the usual excipients increase the heart's efficiency when administered orally, rectally or parenterally.