baber/WOPTO huggingface dataset:
Patent GB-646680-A (GB)
Title: Apparatus for mixing the vapour of a volatile anaesthetic with air
IPC: A61M16/18
Filed: 1948-10-27
Abstract: 646,680. Respiratory appliances. EDMONDSON, W., and JONES, W. Oct. 27, 1948, Nos. 27893/48 and 12460/49. [Class 81(ii)] [Also in Group XXIX] A respiratory device for mixing the vapour of a volatile anaesthetic with air has means for maintaining the proportion of air to anaesthetic constant irrespective of changes in temperature, thereby overcoming the variations which would otherwise result from the changing vapour pressure of the liquid. In the preferred form, part of the air entering a casing 1, through an orifice 23, passes into a metal tube 6 through the right-hand end and is deflected by a baffle 6B into a chamber 2 where liquid anaesthetic is retained in a wick 3. After mixing with the vapour, the air continues through the tube 6 and out, past a disc valve 11, to a chamber 8 where it mixes with fresh air entering around an adjustable cover plate 13. A coil spring 12 tends to close the valve 11 and holds it against a rod 9 of material of negligible coefficient of expansion. The final mixture leaves the chamber 8 through an orifice leading to a breathing mask. With a rise in temperature the tubular member 6 expands and the valve 11 moves towards the closed position, thereby reducing the proportion of air drawn through the anaesthetic.
Patent GB-279592-A (GB)
Abstract: 279,592. Woodward, F. E. Sept. 10, 1926. Tanks.-A motor-cycle petrol tank has the top, sides, and bottom formed in longitudinal halves 1, 2, an opening being left in the bottom for permitting the welding together of inturned flanges at the edges of the halves. The opening is closed in part by the bottom of an inserted oil tank 3, and in part by a plate 4, both being welded to a flange 5. Specification 252,860 is referred to.
Patent GB-1186694-A (GB)
Title: Process for the Synthesis of Melamine
Inventor: MARTEN JEROME HERBERT
IPC: C07D251/60
Filed: 1967-06-16
Abstract: 1,186,694. Melamine. CHEMICAL CONSTRUCTION CORP. 16 June, 1967, No. 27985/67. Addition to 1,105,315. Heading C2C. Melamine is synthetized by passing vaporized urea over a heated fixed catalyst bed, ammonia vapour at a temperature of 150-300‹ C. being injected into the feed stream to maintain the catalyst bed at a temperature of 310-400‹ C. The injection of ammonia at these temperatures serves to maintain the catalyst bed at a uniform temperature. In a preferred embodiment, urea and ammonia vapour are first partially converted in a fluidized catalyst bed and ammonia is introduced into the intermediate gas stream immediately before it enters the fixed bed a series of fixed bed. If more than one fixed bed is employed, further injection of ammonia between each successive bed may be made. Preferred operating temperatures for the fixed bed are in the range 340-370‹ C. The catalyst preferably has an internal surface area of 10-80 square metres/gm. and consists of activated alumina. The process is illustrated by reference to flow diagrams (not shown).
Patent GB-140723-A (GB)
Title: Improvements in and relating to folding boxes
IPC: B65D5/32
Filed: 1919-11-12
Abstract: 140,723. Kunstdruck-und Verlagsanstalt Wezel & Naumann Akt.-Ges., and Pabst, H. Nov. 12, 1919. Folding boxes; covered boxes; lids.-In a box having the sides hinged to the bottom and secured in the set-up conditions by a surrounding strap fastened to the rear side of the box, the strap 3, Fig. 1, and front 5 are formed with flaps 6, 7, respectively, which engage one another and prevent withdrawal of the inner part of the box from the strap. Small cheeks 7<1> may be formed on the strap to prevent the cover from closing when the box is open for inspection purposes. In the polygonal form shown in Fig. 2, the flaps 6, 7 are alternately provided on the strap 3 and sides 4, and the lid has tongues 8, which can be inserted between the sides 4 and strap 3.
Patent GB-1029759-A (GB)
Title: Method and apparatus for replacement of railway sleepers
IPC: E01B27/11
Filed: 1963-07-16
Abstract: 1,029,759. Railway track relaying apparatus. J. A. EISSES. July 16, 1963 [July 16, 1962], No. 28107/63. Heading E1G. Apparatus for replacing sleepers under railway track while allowing free passage thereon, comprises a structure 5 having a flat ground engaging base 6 and supporting girders 7 for the rails 1, the structure 5 has a front cutting edge 10 to remove ballast as the structure is moved forward by hydraulic jacks 11. The old sleepers 2 are removed sideways and new sleepers 3 inserted behind the apparatus, the ballast being conveyed by a longitudinal belt conveyer 13 and short transverse conveyers 14 in the structure 5 to behind the new sleeper. Jacks 17 raise the rails to allow movement of the sleepers. The structure may also comprise a ballast cleaning unit.
Patent GB-1146850-A (GB)
Title: Continuously flexible endless tracks for vehicles
Inventor: LEHMANN HANS
IPC: B62D55/24
Filed: 1966-06-24
Abstract: 1,146,850. Endless tracks for vehicles. IFA GETRIEBEWERKE BRANDENBURG VEB. 24 June, 1966, No. 28260/66. Heading B7H. A continuously flexible endless track is formed as a laminate having at least three longitudinally extending layers one of which is prestressed so that when the track is mounted upon the wheels of a vehicle there is an inherent tendency to form outward bulges between wheels. The bulging effect may be augmented by the track having two prestressed layers or by the pressure of steel members 10 forced into the spaces between tread elements formed on the outer track layer. Where there are two prestressed layers, they are separated by a layer of rubber. Other layers may be of a polyamide material and may have "web-like properties". The layers are bonded together.
Patent GB-323531-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B19/14
Filed: 1928-10-02
Abstract: 323,531. Stafford, C., (Daimler Benz Akt.- Ges.). Oct. 2, 1928. Cylinders receiving liquid fuel.-A pre-ignition chamber for Diesel engines comprises a space b, b<1> into which the fuel is injected through a nozzle a, and a second space h of smaller cross-section which communicates with the reduced part b<1> of the first space through a ring of holes d, the second space h being formed between the inner surface of the pre-ignition chamber and a cylindrical core f which projects beyond the holes d and terminates in a conical tip which coacts with the wall of the chamber to form a conical discharge orifice. The part b<1> is provided with a two-part sleeve c, c<1>, the part c being provided at the bottom with the holes d and the core f. An insulating space c<2> may be formed around the part c.
Patent GB-898497-A (GB)
Title: Improvements in or relating to the manufacture of metallic compositions
Inventor: CATTERALL GRAHAM JOHN
IPC: C22F1/08
Filed: 1959-08-19
Abstract: A metallic composition consisting of a matrix metal or alloy and a dispersed refractory oxide phase which is insoluble in the matrix metal is produced by heating in oxygen an alloy, in the form of wire or powder, which consists of the matrix metal or alloy and less than 0,2% by weight of a solute metal so that the solute metal is oxidised to form the said dispersed refractory oxide phase.  In an example the matrix metal is Cu and the solute metal is one or more of Si, Al, Mg, Be, the alloy being formed by melting and casting the components under vacuum with Al, Si and Be and under argon with Mg.  The oxidation step is preferably carried out by heating the alloy wire or powder in contact with an oxide of the matrix metal or a mixture of the matrix metal with the matrix metal oxide.  In the case of a copper alloy the oxidation is effected by packing the alloy wire in a 50/50 mixture of Cu and Cu2O and heating at 925 DEG C. in dry argon. The dispersed oxide phase formed has a particle size less than 0,1 micron.  Specification 866,082 is referred to.
Patent GB-662040-A (GB)
Title: Improvements in or relating to dental charts
IPC: G09B23/28
Filed: 1949-11-07
Abstract: 662,040. Hand-operated indicators. HOWETT, A. C. A. and KEMP, J. Nov. 7, 1949. No. 28426/49. Class 118 (i). [Also in Group XV] A dental chart comprises an outer case 10 with perforations 11 to represent a set of children's temporary teeth on one face and a similar set of perforations to represent a set of permanent teeth on the other face, a rectangular aperture 16 in each face, and a sheet 17 slidable in the casing. On each face of the sheet 17 is inscribed a graph 18 and a rectangular sub-divided area 19 so that as the sheet is slid out of the casing the graphs in conjunction with the teeth apertures indicate the order of eruption of the teeth and the rectangular apertures in conjunction with the rectangular sub-divided areas the names of the teeth concerned.
Patent GB-695258-A (GB)
Title: Improvements in or relating to devices for controlling the to-and-fro movement of the needle bar and of the take-up arm of sewing machines
IPC: D05B51/00
Filed: 1951-12-06
Abstract: 695,258. Sewing-machines. MEFINA SOC. ANON. Dec. 6, 1951 [Jan. 22, 1951], No. 28601/51. Class 112. Governing needle - thread; needles, driving.-In a machine having a needle-bar actuated by a connecting-rod from a crank on a horizontal shaft, a take-up arm is actuated by a crank-pin coaxial with the connection of the needle-bar connecting- rod to the crank, and the needle-bar is placed at a sufficient distance. from the vertical plane containing the axis of the shaft to produce the necessary phase difference between the movements of the needle and take-up. In the arrangement shown, applied to a machine in which the needle-bar 1 is mounted, for lateral vibration, in a gate 16 pivoted in blocks 14, 18 so that it can be adjusted in the line of feed as described in Specification 694,836 the take-up comprises an arm 6 pivoted on a crankpin 4 on a crank-disc 13 on the shaft 2 and connected by a link 7 to a pivot 8 on the block 14; the crank-pin 4 also carries the connecting-rod 5 actuating the needle-bar, which reciprocates in a line spaced forwardly from the axis of the shaft 2. Alternative forms of the connections of the members 5, 6 to the crank-disc 13 are described and illustrated.
Patent GB-162234-A (GB)
Title: Improvements in or relating to lubricating tanks for large engines
IPC: F16N39/06
Filed: 1920-10-11
Abstract: 162,234. Kilburn, B. E. D., (Kõgi, E.). Oct. 11, 1920. Filters having sheet filtering-materials.-A fil. ter placed in a lubricating-oil tank and accessible through a hole in the flow of an engine room, consists of two or more concentric tubes d which can be withdrawn separately for cleaning without interfering with the operation of the remainder.
Patent GB-637204-A (GB)
Title: Improvements relating to concrete construction
IPC: E04B5/26
Filed: 1947-10-28
Abstract: 637,204. Ceilings ; walls ; girders ; roofs;  casting concrete beams in situ. HOFFMAN, E. Oct. 28, 1947, No. 28762. Convention date, Nov. 2, 1946. [Classes 20 (ii) and 20 (iv)] In the replacement of a ceiling by concrete beams 2 and ceiling plates 3, the ends of the beams with projecting reinforcements are embedded in a joist-like frame member 39 cast in situ against the wall and shuttering 19, 38, the beams extending into existing recesses 40 for the former beam ends. The Specification as open to inspection under Sect. 91 describes also walls and ceilings composed of concrete plates 3 and bearers 2 acting as joists or stanchions with in situ concrete enclosing reinforcement wires in the joint gaps 5, the wire also securing a wood lath 14, at the other end. The bearers may serve as rafters with the wires twisted round laths to which the tile battens are railed. For railway station roofs supported on single or double rows of columns rafters are secured to double bearerpurlins by flat iron loops and bolts passing between the bearers, this gap and a space below between two bearers forming a cross beam supporting the purlins being filled with concrete after insertion of reinforcement. The formation of girder-like members round a chimney group composed on two sides of beams similar to the members 39 and on the other sides of similar beams with bearers taking the place of the plates 19 is also described. This subject-matter does not appear in the Specification as accepted.
Patent GB-940423-A (GB)
Title: Improvements in or relating to devices for spreading granular or powdery material
IPC: A01C17/00
Filed: 1960-03-14
Abstract: 940,423. Powder distributers. C. VAN DER LELY N.V. March 14, 1960 [March 13, 1959], No. 28783/63. Divided out of 940,421. Heading A1D. In a machine for spreading powdery material wherein material is fed from a container to a rotary spreading member 3, the material is fed from the hopper through outlet openings 6 in an annular member 5, there being shutters mounted on a ring 8 movable to control the flow through the openings and a mechanism including an arm 9 for turning the annular member 5 and an arm 13 for turning the shutters and a stop means for limiting the movement of one arm with respect to the other in both of two relatively opposite directions comprising a clamp 17 on the arm 9 provided with a pointer 19 which co-operates with a scale on a strip 14 forming part of the arm 13, the clamp being movable between two finger pieces 15, 16. Specification 906,299 also is referred to.
Patent GB-976493-A (GB)
Title: Improvements in electrode holder for replaceable electrodes for use in electrical machining
IPC: B23H7/22
Filed: 1963-07-22
Abstract: <PICT:0976493/C6-C7/1> An assembly of tubular electrodes for electrolytic machining consists of a body of insulating material 10 having electrode chambers 18 formed therein having stop members 14, comprising a shoulder or lip, to position the tubular electrodes, and holding means 20 mounted on the walls of the electrode chambers and consisting of O-shaped resilient members which grip the electrodes, and act as seals against the electrolyte admitted downwards through tubes 16.  The upper part of the electrode chambers is connected with a liquid current conductor chamber 24 containing mercury or low-melting point metal kept liquid, e.g. by a heating element. The electrodes are readily replaceable when worn, and the replacement electrode is precisely positioned, maintaining inter-electrode/workpiece geometry.  Normally with narrow tubes, the mercury does not flow out, but this can be removed if necessary at a vent 30.  The mercury conductor is connected to a cathode supply 26, and workpiece 32 to the anode. The assembly is provided with a protruding bar 12 to position the assembly relative to the workpiece, by a linkage means 31.
Patent GB-797224-A (GB)
Title: Improvements in or relating to reductive alkylation
Filed: 1955-10-11
Abstract: Aromatic amines are reductively alkylated by continuously introducing hydrogen, an aromatic compound having amino- or nitro-substituents or both amino- and nitro-substituents, and, in at least stoichiometric proportion to the aromatic compound, an aldehyde or ketone into a reaction zone at 230-350 DEG  F. and a total pressure of 100-3000 p.s.i. in the presence of a reductive alkylation catalyst, the hydrogen being present in a proportion of at least 20 mols. per mol. of the aldehyde or ketone.  Aromatic compounds mentioned are mono-, di-and tri-nitrobenzene, mono-, di- and tri-aminobenzene, aminonitrobenzene, diaminonitrobenzene, aminodinitrobenzene, and similarly substituted naphthalenes and anthracenes, and nitro-, amino- and nitroaminophenols.  The use of ketones gives N-secondary-alkyl products, thus p-nitroaniline and a ketone yields N : N-di-secondary-alkyl-p-phenylene diamine, but aldehydes give N-primary-alkyl products, thus p-phenylene diamine and an aldehyde yields N : N1 - di - primary - alkyl - p - phenylene diamine and N : N : N1 : N1 - tetra - alkyl - p - phenylene diamine.  Ketones specified include acetone, methyl ethyl ketone, methyl heptyl ketone, propyl amyl ketone, cyclohexanone, benzophenone, acetophenone, propyl cyclohexyl ketone and mixtures of ketones.  Aldehydes specified are formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, valeraldehyde and mixtures of aldehydes.  Catalysts mentioned are a mixture of copper oxide, chromium oxide and barium oxide, nickel, nickel-kieselguhr composite, nickel sulphide, copper sulphide, molybdenum sulphide and those containing platinum or palladium.  The catalyst may be used as a fixed bed in reaction tubes or chambers, the reactants being introduced separately or as a mixture and passing vertically therethrough in upward or downward flow.  One or more of the reactants may be introduced at one or more intermediate points in the direction of flow. Alternatively, the catalyst may be fluidized, or be carried into the reaction zone as a slurry in one or more of the reactants, or it may be used as a moving bed, the reactants passing concurrently or countercurrently therewith.  After the reactants have left the reaction zone, excess hydrogen is removed and the mixture fractionally distilled to separate the alkylation product from the excess aldehyde or ketone.  Excess hydrogen and aldehyde or ketone may be recycled to the reaction.  In examples: (1) p-nitroaniline is treated with hydrogen and methyl ethyl ketone in the presence of an alumina-platinum catalyst containing combined fluorine to give N : N1-di-sec.-butyl-p-phenylene diamine; (2) N-methyl-p-aminophenol is made by reacting p-aminophenol with hydrogen and formaldehyde; (3) N,N1-di-sec.-octyl-p-phenylene diamine is made by reacting hydrogen and ethyl amyl ketone with p-nitroaniline.  Specification 712,100 is referred to.
Patent GB-1214695-A (GB)
Title: Electrical switching device
Inventor: NAIMER HUBERT LAURENZ
IPC: H01H25/06
Filed: 1968-06-18
Abstract: 1,214,695. Cam operated switches. H. L. NAIMER. 18 June, 1968 [23 June, 1967], No. 29030/68. Heading H1N. The operating programme of a switch assembly comprising a plurality of bridging contacts 6 actuated by a rotary cam 4 is adjustable by axial movement of the shaft 3 carrying the cam 4 to present a different cam profile of the cam to the cam followers 5 of the bridging contacts. A plurality of switch assemblies may be stacked together for operation by respective rotary cams 4 secured to a common shaft 3. The switch device shown has two switch assemblies and the shaft is biased upwardly by springs 12 beneath each cam 4 or by pairs of springs (not shown) acting against'a projecting plate 22 secured to its cam. The operating shaft carries a keyplate 10 which cooperates with a complementary fixed keying plate 14 to ensure that axial movement of the shaft to change the programme can only be effected in certain angular positions. The axial movement of the cams 4 may cause operation of the switch assemblies by means of surfaces 46. The cams shown have two axial spaced profiles but more than two may be provided. In the latter case more than two sets of key plates and keying plates are provided and the arrangement can be such that the cam or cams carries out a series of axial movements from one programme level to another during a single rotation.
Patent GB-1429048-A (GB)
Title: Manufacture of ammonium thiosulphate
IPC: C01B17/64
Filed: 1973-06-19
Abstract: 1429048 Manufacture of ammonium thiosulphate HOECHST AG 19 June 1973 [20 June 1972] 29090/73 Heading C1A (NH 4 ) 2 S 2 O 3  is produced by reacting SO 2  with ammonium in (NH 4 ) 2 S 2 O 3  solution at pH 5À5 to 7 and temperature of up to 80 C. to form (NH 4 ) 2 SO 3  and NH 4 HSO 3  which are then reacted with ammonia and sulphur. The second stage may be carried out in one or two steps. The (NH 4 ) 2 S 2 O 3  may be crystallized and the mother liquor re-cycled. A Venturi scrubber may be used for the reaction between the SO 2  and the ammonia solution. The SO2 may be mixed with O 2  without interfering with the process.
Patent GB-504898-A (GB)
Title: Improvements in or relating to electro-optical systems for television image transmission
IPC: H04N5/06
Filed: 1938-10-07
Abstract: 504,898. Television transmitters. ELECTRICAL RESEARCH PRODUCTS, Inc. Oct. 7, 1938, No. 29160. Convention date, Oct. 15, 1937. [Class 40 (iii)] Line synchronizing signals are generated by light from a source 53, reflected by a prism 55 to pass through a scanning lens to a mirror 56, and reflected back through the same scanning lens to a prism 57 reflecting the light to a cell 61. A delay circuit 63 renders the synchronizing signals correctly timed relatively to the picture signals. Frame synchronizing signals are generated by a commutator 66 on the driving shaft 17 of the lens disc 15. The lenses 49 of the lens disc each comprise two plano-convex lenses of short focal length, Figs. 3, 4, not shown, and are preferably stopped down, Fig. 10 (not shown). The disc rotates in a,casing 90 to reduce wind-resistance. The transmitter is described for scanning a film, the picture signals being generated in a cell 51, receiving light from a glass, quartz or Methyl methacrylate channel 50. A sprocket 7 feeds film from the spool 6 to the gate and it is drawn through the gate by a roller 10 on whose axis is loosely coupled a flywheel 30 to eliminate strain on -the film at the beginning of transmission, Fig. 2 (not shown). The film is drawn past the sound-scanning point 11 by rollers 12, 13 driven by motor 38. The sprocket 7 and the roller 10 are driven by shaft 19 coupled by an electromagnetic clutch 33 to the shaft 17. The clutch 33 is energized by a switch 36 which also starts motor 38 so that rollers 12, 13 do not put too great a strain on the film, A lever 69 carries a roller 68 and is rotatable about pivot 70 so that film may be drawn through the gate for framing. The framing of the film is observed at a window 101 illuminated once each frame by a lamp energized from a commutator 76 on the disc driving shaft 17. The film gate is mounted to be accurately adjustable to ensure correct focusing of the scanning spot, Fig. 6, not shown. The aparture 47 is accurately adjustable in size and position, Fig. 11 (not shown).
Patent GB-340312-A (GB)
Title: Improvements in or relating to cigar and like lighters
IPC: F23Q2/08
Filed: 1929-09-26
Abstract: 340,312. Pocket igniters. ART METAL WORKS, Inc., 46, Center Street, Newark, New Jersey, U.S.A.-(Assignees of Aronson, L. V. ; 50, Center Street, Newark, New Jersey, U.S.A.) Sept. 26, 1929, No. 29179. Convention date, July 12. [Class 75 (iii).] A windshield 15 made of sheet metal or other resilient material is slidably mounted on one end of the fuel container 10 by means of inturned flanges 16, 17 engaging in grooves 18 in the side walls of the container so that it can be moved into and out of the operative position. The upward movement of the windshield is limited by the lower edge 21 of a cut-away portion 23 engaging a flange 20 and the downward movement by the lower end engaging a flange 25. The friction-wheel 12 and an extinguishing cap 13 may be operated simultaneously by depressing a finger-piece 14 as described in Specification 291,695, [Class 75 (iii), Lamps &c., Details &c.]. The cut-away portion permits of the insertion of a cigarette 24 in a horizontal position and access of air to the flame.
Patent GB-684474-A (GB)
Title: Improvements in and relating to electrical condensers
IPC: C04B35/468
Filed: 1948-11-10
Abstract: A ceramic dielectric for an electric condenser comprises a composition corresponding to that resulting from firing together the oxides of barium, titanium and zirconium, the barium oxide content being between 34 and 58 mol. per cent, the titanium dioxide content being not less than 20 mol. per cent, and the zirconium dioxide content being not more than 30 mol. per cent. Slightly different percentages are described in the Provisional Specifications.  Instead of the oxides of Ba, Ti, and Zr, any of their compounds which on firing decompose to give the oxides may be used, e.g. the carbonates. In a particular embodiment suitable proportions of barium carbonate, titanium dioxide, and zirconium dioxide are milled together and pressed into blocks which are prefired at 1150 DEG  C. to 1200 DEG C. for two hours.  After crushing and sieving 2 per cent bentonite is added, the mixture milled, pressed into discs and fired for one hour at 1300 DEG  C. to 1350 DEG  C. Specifications 574,577 and 601,477 are referred to.