baber/WOPTO huggingface dataset:
Patent GB-898928-A (GB)
Title: Antitubercular compositions comprising substituted ethylenediamines
IPC: A61K31/13
Filed: 1961-02-17
Abstract: N, N1 - bis - (1, 1 - dimethylpropyl) - ethylene - diamine is prepared by refluxing t-amylamine and ethylene dibromide in 95% ethanol. N,N1-bis-(1,3-dimethylbutyl)-ethylenediamine and N,N1-bis-(1-propylbutyl)ethylene diamine are prepared by the catalytic reduction (H2/Pt catalyst) in ethanol of ethylenediamine and methylisobutyl ketone or 4-heptanone. Similarly, using 1,2-propane-diamine or 2,3-diaminobutane in acetone, there is obtained N1,N2-diisopropyl-1,2-propanediamine and N2, N3 - diisopropyl - 2, 3 - diaminobutane.  The above bases may be converted to their dihydrochlorides by adding thereto about 2.2 equivalents of 5N ethanolic HCl and acetone.ALSO:Orally administrable anti-tubercular compositions in unit dosage form e.g. a tablet, capsule or granule comprise a compound of general formula <FORM:0898928/VI/1> or an acid addition salt thereof with an inorganic or organic acid, wherein R1 and R2 are C1-6 alkyl or cycloalkyl radicals and R3 and R4 are hydrogen atoms or methyl groups and a pharmaceutically acceptable carrier.
Patent GB-633325-A (GB)
Title: Improvements in doors or facing or closure panels for kitchen furniture and the like
IPC: E06B5/00
Filed: 1948-02-27
Abstract: 633,325. Panels. WELDALL & ASSEMBLY, Ltd., and WILKINSON, V. A. Feb. 27, 1948, No. 5916. [Class 20 (iv)] [Also in Group XIV] A panel for kitchen furniture consists of a flanged front plate 1 of plastics fastened by screws in attached bosses 14 to a metal backing plate 7 reinforced by channel members 8, 10.
Patent GB-306714-A (GB)
Title: Improvements in and connected with travelling cranes
IPC: B66C9/18
Filed: 1928-02-28
Abstract: 306,714. Babcock & Wilcox, Ltd., and Fox, R. S. Feb. 28, 1928. Controlling independently of drives.-In an electrically-propelled portal or like crane, the current is cut off automatically from the motor or motors when the crane reaches a predetermined inclination on an uneven track. As shown, a pendulum 2 pivoted at 1 on the travelling structure A is connected by linkage 5, 6, 7, to the switch 4.
Patent GB-145263-A (GB)
Title: Improvements in or relating to screw cutting machinery
IPC: B23G7/00
Filed: 1919-06-27
Abstract: 145,263. Kupp, J. June 27, 1919. Screwing; screwing-dies and die-heads.-In a screwing-machine of the type in which the tools have cutting teeth or threads on one side which is applied tangentially to the work, a cutting-off tool is mounted in conjunction therewith so as to be capable of moving radially with the screwing tools or independently thereof. The screwing-tools 20 are secured by blocks 21 and screws 22 to slides 14 which are adjusted radially by a slotted cam-disk 9 rotated by a hand-operated worm 10 and toothed rim on the disk. The set position is indicated by a pin 33 on the disk passing through a slot 34 in the body 8, which is formed with a scale. For convenience in reading and for determining the set position, an adjustable stop 35 is clamped by a bolt 35<a> in a groove in the body. Each slide is also provided with a second slide for a tool 29 for roughing the work or for cutting-off, and in order that it may be also adjustable independently of the slide it has a projection engaging a groove in a hand-adjusted eccentric 31. The die-head is mounted on a carriage 18 traversed by a screw 5, and in order to open the dies when the desired length is screwed an adjustable abutment 43 on the frame 6 engages a lever 39 on the carriage so as to press the spring-retracted portion 44 of a friction clutch into contact with the portion 37 which is rotated by a belt 38, and so rotates the shaft carrying the worm 10 to open the dies. The carriage may then strike an adjustable stop on a stop-rod and disengage the screw from its drive. The work is fed through a hollow spindle and held in a chuck driven by gear also connected to the screw.
Patent GB-548025-A (GB)
Title: Improvements in machines for the production of multi-ply fabrics
IPC: D06B3/10
Filed: 1941-05-15
Abstract: 548,025. Coating webs; compound fabrics. MANDLEBERG & CO., Ltd., J., and LLOYD, J. May 15, 1941, Nos. 6280 and 13934. [Class 140] A spreading machine of the kind in which the fabric is held up to the gauge only by its tension comprises a spreading gauge c, a plate h angularly adjustable by screws i forming a trough into which coating composition, e.g. rubber, synthetic rubber or cellulose derivative is fed, a pair of rollers b, d over which the fabric a passes, one in front of and the other behind the gauge so that the fabric is depressed by the gauge, side controls e spaced from the edges of the fabric to limit the flow of composition over the edges. of the fabric and selvedge scraper blades f at the rear of the gauge extending under the edges of the fabric to remove excess coating therefrom. The spreading gauge c has two operative edges which may be brought into service by handle g. The weight of coating applied may be varied by adjustment of the angles of approach or delivery of the fabric to' or from the gauge, e.g. by adjusting the height of rollers b, d. Webs, e.g. a straight fabric and a biassed fabric, from two coating machines may be united at the nip of combining rollers, or an uncoated fabric may be combined with a coated fabric.
Patent GB-402965-A (GB)
Title: Improvements in mosquito or like nets
IPC: A47C29/00
Filed: 1933-03-02
Abstract: 402,965. Coated fabrics. SYLVESTER, E., Gransch³tz, Weissenfels-on-Saale, Germany. March 2, 1933, No. 6370. Convention date, March 2, 1932. Drawings to Specification. [Class 140.] An insect-excluding blind comprises an openwork textile fabric, for example of hemp, treated with a dilute cellulose ester solution for instance in the form known under the Registered Trade Mark " Cellon " so as to coat the threads and connect them at their intersecting points without closing the meshes. The net may be reinforced longitudinally, transversely or diagonally by thicker threads or by doubling or multiplying the number of threads. The Specification as open to inspection under Sect. 91 comprises also the use of caoutchouc and caoutchouc-like substances in place of cellulose esters. This subject-matter does not appear in the Specification as accepted.
Patent GB-739839-A (GB)
Title: Method of producing compounds of iron substantially free from impurities
Inventor: FORWARD FRANK ARTHUR
IPC: C01G49/14
Filed: 1954-03-04
Abstract: Iron bearing materials, containing the iron as oxide, are leached with an acid ferric sulphate solution; the undissolved residue separated; the leach solution hydrolysed at elevated temperatures and pressures, to convert and precipitate the ferric sulphate as the basic salt; which is then separated substantially free from the impurities of the leach solution and may be converted by usual means to the oxide.  The non-ferrous metals remaining in solution can be recovered by precipitation with ammonium sulphate and the ferrous sulphate remaining in solution can be oxidized to ferric sulphate and recirculated as leaching liquor.  The non-ferrous metals can be extracted from the solution by precipitation as sulphides, by normal methods and in particular by neutralizing the solution with calcium sulphide and lime.
Patent GB-813875-A (GB)
Title: Improvements in typewriter reach adjustment and escapement
IPC: B41J19/34
Filed: 1957-02-26
Abstract: 813,875. Typewriters &c. SPERRY RAND CORPORATION. Feb. 26, 1957 [March 12, 1956], No. 6427/57 Class 100(4) A power-operated key-controlled typewriter has a train of parts operating a noiseless action which includes a cam and means operated by it for affording the printing impact before power is applied to operate the escapement mechanism through linkages controlled by the cam. When a key 21 is pressed eccentric roller 56 is rotated into engagement with power roll 54 through train of parts 57. Power arm 58 is lifted and through stud 59 rocks bell crank 60 clockwise against the resistance of spring 61. Cam face 62 depresses roller 64 to rotate cam lever 66 anticlockwise about 67 and pull down link 68, which pivots operating lever bar 53 about 69 to rock lever 47 clockwise about 49. Sublever 33 pulled anti-clockwise about 39 by link 46 pushes arms 26 through a distance limited by reach stop 40, after which they continue to finish the printing stroke by momentum stored in weight 98. Each cam lever 66 is connected by link 73 with an adjusting dog 74 pivoted at 76 and biased against adjusting screw 78 by spring 61. This limits the downward movement of link 68 to prevent overthrow and enable each reach stop to be adjusted to allow a complete printing impact before letter spacing occurs. Bail bracket 79 supports bail 86, which is common to all bell-crank cams 60, and an escapement bracket 82 to which is attached at 84 escapement tie link 83. As cam 60 continues to turn clockwise about 71 bail 86 is pushed to the left to pull on link 83 and operate the escapement mechanism. Face 63 of cam 60 is so shaped that the type operating linkages are not being moved at this time and the reach stop is maintained in face-arresting position. Specifications 688,289 and 712,705 are referred to.
Patent GB-512133-A (GB)
Title: An improved railway for use in road-making
IPC: E01C19/50
Filed: 1939-02-28
Abstract: 512,133. Portable railways; sleepers. KRUPP AKT.-GES., F. Feb. 28, 1939, No. 6532. Convention date, July 2, 1938. [Class 104 (ii)] A support for the rails of a road-making railway comprises a pair of plates 1, 2 at right angles to each other having their edges curled over for interengagement. A third plate 3 with curled edges engaging 1 and 2 has a horizontal portion on which the rails 7 are secured by clamps 8, 9. Adjacent plates 1 are connected by plates 10 with bent edges and adjacent plates 2 are connected by similar plates 11. The supports are fixed in position by anchoring rods 5 and wedges 6. The plates 3 may be replaced by a series of boxes, which may be stiffened by web members.
Patent GB-873941-A (GB)
Title: Improvements in or relating to electrical capacitative devices
IPC: H01G4/38
Filed: 1959-02-25
Abstract: 873,941. Multiple capacitors. DUBILIER CONDENSER CO. (1925) Ltd. Feb. 25, 1959 [April 16, 1958], No. 6532/59. Class 37. A capacitative device for use in a threephase power circuit to provide power factor correction and suppression of unwanted frequencies, comprises a casing A, Fig. 1, in which are three conductors B1, B2, B3, a dielectric layer surrounding each conductor and a capacitative unit surrounding each dielectric layer, each unit including at least three electrodes C, D, E. In the device of Fig. 1, casing A is earthed and electrodes D are connected to the casing, thereby forming the by-pass capacitors C1D1, C2D2, C3D3 of Fig. 2. Electrodes C are connected to their respective conductors B and interphase connection is made between each conductor B and a tag F on an electrode E surrounding another conductor, thereby forming the power factor correction capacitors C1E1, C2E2, C3E3. Various other connections are possible, e.g. the interphase connections may be made by connecting electrodes E together, Fig. 6 (not shown), and the device may be used with a delta-connected power source. Electrodes CDE may be of metal foil wound in a spiral with interleaved insulating strips, electrodes D, E being coplanar but displaced from each other along the length of the roll. Alternatively, E may be wound outside D which is wound outside C. Electrodes C, D may project beyond the insulating strips at opposite ends of the roll to facilitate connection thereto. An inductance may be inserted between each end of the conductors B and the casing, Fig. 4 (not shown).
Patent GB-642202-A (GB)
Title: Printing press
IPC: B41F1/26
Filed: 1948-03-02
Abstract: 642,202. Printing-machines. CHANDLER & PRICE CO. March 2, 1948, No. 6536. Convention date, March 12, 1947. [Class 100 (ii)] A platen press of the kind in which a curved platen is used in coaction with a flat printing- surface is adapted for use in presses of the Gordon type in which the printing-bed 4 is carried on an oscillating frame fitted with travelling inking-rollers 7. The platen 5 is mounted in an oscillating carrier mounted in a stationary frame, and is moved from the sheetreceiving position shown in Fig. 1 to the position shown in Fig. 2 as the arms 2 carrying the bed 4 are moved clockwise to the printing position by connecting rods 9 actuated by pins on the members 12, 13 carried by the driving- shaft 14. The oscillating carrier is mounted on a shaft 17 which is oscillated by a cam on the shaft 14, and when the carrier reaches the position shown in Fig. 2, the shaft 17 is held stationary by a cam-actuated rocker lock 23 which engages ledges 22 in an extension 21 of the shaft 17. To control the movement of the platen relatively to the carrier so as to ensure true rolling contact between the bed and platen, the platen is connected to arms 39 of the carrier by means of rollers 40 and curved slots 41 secured to the platen, and curved surfaces 31 on the platen engage curved bearing surfaces 32 on arms 33 connected to the shaft 17. The slots 41 and surfaces 32 are concentric and the platen during the printing action moves counterclockwise about the imaginary centre 30 of the slots 41 and surfaces 32. The platen is moved clockwise to the position shown in Fig. 2 by means of arms 44 fitted with rollers 45 engaged by a cam 56 on the drive-shaft 14, and connected to the platen by bolts and nuts surrounded by springs 49 which transmit movements of the arms 44 to the platen. The arms 44 are attached to supports 43 connected to the platen by a rod 51 passing through lugs 50 on the platen. At the end of the printing operation the upper edge 28 of the platen engages the type bed, and the pivotal movement of the platen then ceases owing to the engagement of the rollers 45 with the dwell of cam 56, thus preventing possibility of a double impression. In a modification the connection between the arms 33 and the upper end of the platen takes the form of a pin moving in a concentric slot, and in a further modification a pin and straight slot is used. Specifications 14805/05, [Class 100], 174,445, [Class 100 (ii)], and 639,665 are referred to.
Patent GB-1129056-A (GB)
Title: Method of welding metal parts having different cross-sections
IPC: B23K15/00
Filed: 1967-02-10
Abstract: 1,129,056. Turbine bladed rotors. SIEMENS, A.G. Feb. 10, 1967 [Feb. 11, 1966], No.6598/67. Heading FIT. [Also in Division B3] In making a turbine wheel, a strip 32 formed, e.g., by milling, punching, etching, spark-erosion or electro-chemical machining, with apertures 33 shaped to conform to drawn blades 34 is secured around a disc 31 by use of a fixture, the blades 34, are inserted in the apertures 33 and the blade ends, strip 32, and disc 31 are joined together by a weld formed by an electron beam 34. The blade ends are shaped to conform to the disc 31. Alternatively the blade ends are plane and the disc is polygonal.
Patent GB-580123-A (GB)
Title: Improvements in and connected with the recovery of caustic soda from black liquor obtained in the alkaline wood pulping processes
IPC: D21C11/00
Filed: 1944-04-11
Abstract: Caustic soda is obtained by the electrolysis of the black liquor produced in the manufacture of paper pulp by the alkaline processes. The liquor is introduced into the primary compartment of a mercury cell, Fig. 1, and is decomposed, the sodium produced amalgamating with the mercury cathode, and the organic materials, such as lignin, being deposited at the anode.  The electrolyte, after having had about 60-70 per cent of its soda content removed, passes through a separator to remove more of the lignin. The presence of the remaining soda keeps the cell resistance down and consequently increases the cell efficiency, Fig. 6 (not shown).  The liquid from the separator is passed to the secondary compartment of the cell, wherein the regenerated caustic soda dissolves in it.  Losses of soda may be made up by adding sodium hydroxide to the resulting digester liquor, but preferably by adding sodium carbonate to the black liquor immediately prior to electrolysis.  Fig. 2 shows how the excess organic material may be removed from the electrolyte by hydrolysis and fermentation after it has been electrolysed until the liquor becomes acid.  Black liquor may be supplied direct to the secondary compartment to regenerate the caustic soda.  In <PICT:0580123/IV/1> <PICT:0580123/IV/2> a modification, Fig. 3 (not shown), about two-thirds of the soda is removed in a normal cycle and periodically the electrolysis is continued to obtain the optimum yield of soda, the effluent liquor being treated by hydrolysis and fermentation. These methods, described as applied to the "soda" process, may also be used with the "sulphate" process.  The Specification as open to inspection under Sect. 91 also states that the electrolytic process may be carried out in diaphragm type cells and that some of the black liquor may be removed before electrolysis to be concentrated and incinerated to produce sodium carbonate which is fed back into the system.  This subject-matter does not appear in the Specification as accepted.
Patent GB-382186-A (GB)
Title: Improvements in or relating to pipe joints
IPC: F16L21/025
Filed: 1932-03-05
Abstract: 382,186. Pipe joints. CORNELIUS, F. B. and STANTON IRONWORKS CO., Ltd., Stanton-by-Dale, near Nottingham. March 5, 1932, No. 6722. Addition to 316,747, [Class 99 (i), Pipes and tubes, Joints &c. for]. [Class 99 (i).] In a pipe joint according to the parent Specification the packing ring j while being rolled along the spigot into contact with the shoulder e is centred by a shoulder e<1> in the socket.
Patent GB-392698-A (GB)
Title: A spacing and measuring device to be used in the preparing and designing of advertisements and all printed matter
IPC: G09F7/00
Filed: 1932-03-07
Abstract: 392,698. Printers' composing appliances. SMALLWOOD, A., 711, London Road, Derby. March 7, 1932, No. 6743. [Class 100 (iii).] Scales and gauges.-A spacing and measuring device for use by designers of advertisements and printing consists of a rectangular gauge of celluloid or other material having along one side A a scale of inches, and along the other three sides B, C, D point scales, and also six parallel slots E of different widths for indicating lettering of different sizes, and point and em scales F, G adjacent to the slots.
Patent GB-908151-A (GB)
Title: Screening or conveying device
IPC: B07B1/40
Filed: 1960-02-26
Abstract: 908,151. Screening apparatus. WESTFALIA DINNENDAHL GROPPEL A.G. Feb. 26, 1960 [March 21, 1959], No. 6783/60. Class 117. [Also in Group XXX] A frame 1 resiliently mounted on rubber buffers 2 supports a screening box 3 oscillated by a driving device 7 acting through a loose coupling 8 ; the box is supported by pivoted links 4 and pairs of buffers 5 between which extensions 6 of the box side walls are sandwiched.
Patent GB-1504582-A (GB)
Title: Degradable plastics
IPC: C08L31/02
Filed: 1975-02-18
Abstract: 1504582 Oxymethylene esters NETHERLANDS APPLIED SCIENTIFIC RESEARCH FOR INDUSTRY TRADE & COMMERCE 18 Feb 1975 [18 Feb 1974] 6798/75 Heading C2C [Also in Division C3] Tetramethylene-bis-(oxymethylene acetate) is prepared by reacting tetramethylene bis- (chloromethyl ester) with sodium acetate. Pentaerythritol bis - (oxymethylene acetate)bis acetate and the corresponding propionate ester were made by reacting pentaerythritol bis (formed) with acetic anhydride and propionic anhydride respectively.
Patent GB-663736-A (GB)
Title: Cationic urea formaldehyde resin and its applications
IPC: B01D15/04
Filed: 1948-03-04
Abstract: Water soluble cationic urea-formaldehyde resins, suitable for improving the wet strength of felted fibres, e.g. paper, paper board and shaped paper articles, are produced by reacting a condensation product of 2.0-3.0 mols. of formaldehyde and 1 mol. of urea (preferably produced under alkaline conditions) with 2-80 per cent of a polyfunctional amine based on the weight of urea, the pH, at least in the later stages of the reaction being below 4, and the resins being kept liquid during the reaction.  The polyfunctional amine may be an alkylene polyamine, e.g. ethylenediamine, 1,3-propylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, or polypropylene- or polybutylene-polyamines; condensation products of alkylenepolyamines with halohydrins such as a -dichlorhydrin or epichlorhydrins; hydroxyamines, e.g. mono- or dialkylolamines and water soluble condensation products thereof with aldehydes. The liquid resin may be reduced to a dry powder by spray drying at 200-250 DEG  C. or may be applied in dilute aqueous suspension to the fibres in the paper mills.  They may be extended with wood flour and used as adhesives or used as ion exchange media when reduced to the insoluble infusible state.  In examples: (1) 200 parts urea were dissolved in 678 parts 37 per cent formaldehyde adjusted to pH 8 by addition of 7.5 parts triethanolamine.  The mixture was heated to 70 DEG  C., and 20 parts tetraethylene pentamine, 47 parts water and 55.7 parts 18 per cent HCl then added; the reaction mixture was maintained at 70-75 DEG  C. for one hour when the pH dropped to 1.6-2-0 and was then adjusted to 3 by addition of NaOH whereupon the viscosity of the solution rose steadily; when the required value was obtained the solution was neutralised and was stable on storage. Further examples and tables specify the manner in which solutions of any required viscosity can be obtained.  In example (7) the polyfunctional amine employed comprises an epichlorhydrin resin solution prepared by adding it slowly to an aqueous solution of tetramethylenepentamine while maintaining the temperature at 50 DEG C.  The polyalkylene polyamines specified in the remaining examples are (5) diethylenetriamine (6) diethanolamine.  The Specification as open to inspection under Sect 91, included Examples 7-11 (Cancelled). In Example (7) a resinous product is obtained by heating to 70 DEG C. a mixture of 811 parts 37 per cent formaldehyde, 240 parts urea, and 21 parts 50 per cent triethanolamine solution; 52 parts guanidine HCl and 16 parts 18 per cent HCl were added to the liquid product to give a pH of 1.45.  The mixture was kept at 70-75 DEG  C. for 1 hour and then cooled to 40-45 DEG  C. and neutralised to give a syrup of viscosity F.  Examples 8-11 are similar but employ guanidine nitrate, guanylurea, and dicandiamide instead of guanidine HCl.  Syrups having viscosities from A-T are described.  This subject-matter does not appear in the Specification as accepted.
Patent GB-272294-A (GB)
Title: Improvements relating to coupling systems for radio valves
IPC: H03J3/06
Filed: 1926-03-11
Abstract: 272,294. Gill, H. A., (United Distributors, Ltd.). March 11, 1926. Thermionic amplifiers. -In a thermionic amplifier of the resistance or choke coupled type, an auxiliary inductance is combined with the self-capacities present in the circuit, with the .object of increasing the impedance of the coupling system until it is considerably greater than that of the valve. As shown in Fig. 2, an inductance 12 shunted by a variable capacity 13 is inserted between the plate circuit of valve 3 and the grid of valve 4. The coupling condenser 14 may also be variable as shown. As shown in Fig. 3, the choke or resistance coupling 10 is shunted by a variable condenser 15, whilst in Fig. 4 a resistance or choke 16, shunted by a condenser 17, is inserted in series with the coupling condenser 11. By adjusting the condensers 14, 15, or the resistance or choke 16, the current-transformation between successive valves may be increased, with a consequent increase in damping or power losses to the extent necessary to secure stability.