baber/WOPTO huggingface dataset:
Patent GB-774902-A (GB)
Title: Process for the preparation of terephthalic acid
Filed: 1954-03-11
Abstract: A process for preparing terephthalic acid comprises reacting para-di-isopropylbenzene with molecular oxygen in the presence of a catalytic amount of a heavy metal compound and a lower aliphatic mono-carboxylic acid of 1 to 6 carbon atoms in the molecule, at a temperature in the range of 150 DEG  C. to 275 DEG  C. and a pressure in the range of 300 p.s.i.g. to 1500 p.s.i.g. such that a liquid phase of the lower acid is maintained.  The reaction may be carried out in the presence of water.  The process may be operated batchwise. The reaction temperature may be regulated by allowing volatilization of the lower acid to take place.  Water and acid vapours may be removed during the reaction or partially condensed and recycled.  The para-di-isopropyl benzene starting material may be a mixture containing some meta-di-isopropyl-benzene and lower or higher alkyl benzenes.  In addition the mixture may contain saturated aliphatic hydrocarbons relatively resistant to oxidation.  Isophthalic acid, if present in the reaction product, is removed by washing with glacial acetic acid.  Pure oxygen gas or mixtures such as air may be employed in the process.  In examples oxygen is passed into a mixture containing para-di-isopropyl benzene with some metaisomer, acetic acid and manganese cumate with agitation at elevated temperature and such a pressure that the reaction mixture contains an aqueous phase, the crude terephthalic acid is filtered off and washed with acetic acid and water, isophthalic acid is obtained on distillation of the acetic acid washings and the crude terephthalic acid is esterified directly with methanol in the presence of hydrochloric, sulphuric or phosphoric acid, optionally after washing with methanol, ethanol or propanol or the terephthalic acid is converted to the acid chloride with thionyl chloride and subsequently esterified (1); caproic acid is employed instead of acetic acid in a similar process and cobalt cumate is employed as catalyst in a comparative process (2); and water is added to reaction mixtures in processes similar to (1), (2), (3) and (4), the pressure being such that a separate aqueous phase is present. Metal carboxylate catalysts are prepared by reacting the metal oxide or other compound with the appropriate acid or dissolving the latter in caustic soda solution and adding the metal acetate. The catalyst is washed with water, and dried in air and then over calcium chloride at low pressure.  The manganese carboxylate catalyst may be the salt of a monocarboxylic acid having from 2 to 10 carbon atoms, preferably an acid formed in the reaction system. Manganese cumate may be prepared by dissolving cumic acid in sodium hydroxide solution and adding manganese acetate. Specification 762,129 is referred to.
Patent GB-1024961-A (GB)
Title: Improvements relating to a method of preparing an index file from recorded information and index patterns
Inventor: WILKINSON GILES ALEXANDER
IPC: G06K1/12
Filed: 1963-02-21
Abstract: 1,024,961. Editing sound-tapes. EASTMAN KODAK CO. Feb. 10, 1964 [Feb. 21, 1963], No. 7103/63. Heading G5R. [Also in Division B6] A sound recording 16 on a magnetic or other tape 12 is indexed by distinguishable signals 13, 17 and 18. The tape is cut into segments at points intermediate the ends of the index signals and the segments arranged side-by-side in order according to the index signals 13a, 13b, 17a, 17b, 18a, 18b &c. (Fig. 2). The segments are secured together by adhesive tape, or, mounted on a transparent or opaque sheet.
Patent GB-278586-A (GB)
Title: Locking device for securing the closures of petrol or oil tanks of motor vehicles
IPC: B60K15/04
Filed: 1927-03-14
Abstract: 278,586. Goss, C. A. N. March 14, 1927. Locks, pin - key; screw fastenings. - Plugs 1, 2 closing petrol and oil tanks 3, 4 are locked by a bar 8, which is passed through a ring 17 on the plug 2 and into a casing 5 attached tc the plug 1, a nut 6 in the casing 5 enga,ging the screw-threaded end of the bar 8. A bush 12 holding the nut in position has grooves 14, 13 to receive a projection 15 on a sealing cap 16. When the cap 16 is removed a key 10 may be introduced to engage a projection 11 on the nut 6. The bar 8 has a square end engaging the square slot in the ring 17, which may be secured direct to the tank 3 if the plug 2 is not available.
Patent GB-421147-A (GB)
Title: Improvements in or relating to apparatus for the dry cleaning of coal and like materials
IPC: B03B4/02
Filed: 1934-03-06
Abstract: 421,147. Weighing-apparatus fitted to apparatus for separating solid materials. PREPARATION INDUSTRIELLE DES COMBUSTIBLES, 23, Boulevard de Strasbourg, Nogent-sur-Marne, France. March 6, 1934, No. 7124. Convention date, March 10, 1933. [Class 143] [See also Group II] In the separation of materials of different density, such as a mixture of coal and shale, by the stratifying effect of vibration and upwardly acting air-pressure, the discharge of one or more of the products is controlled by a weighing device which adjusts the position of the skimmers automatically in accordance with the weight of a sample of the products taken preferably from the neighbourhood of the skimmers. In the form shown in Fig. 1, the separating table 1 has a spillage edge 3 over which the products fall in order of increasing density from A to B. Skimmers or cut-out blades 7 are disposed at required points to divert the products to a coal hopper 4, middlings hopper 5 and shale hopper 6. One or all of the blades are duplicated as at 8 to deliver a sample to a small hopper which overflows into the hopper next above in the series. A constantly moving conveyer 10 delivers to another constantly moving conveyer 15 forming part of a weighing beam 13 and delivering into the hopper 4. Variations in the density of the sample are reflected by movements of the weigh beam which are utilised to move the terminal 17 of the circuit of a relay 25 into contact with one or other of the terminals 18, 19 so that the motor 24 is driven in a direction to adjust the setting of the blade 7, 8 accordingly. The blade is pivotally mounted and is operated by a weight 21 and a cable 22 which is wound or unwound by the motor. The blades at the different skimming points may be independently operated or interconnected by links 30. In the modification shown in Fig. 3 samples of constant volume are delivered intermittently by a bucket wheel 35 to a weighing machine 13, which is locked during the loading operation by oppositely rotating cams 41. The weigh beam in this case carries a frame 34 mounted on knife-edges, and two pans 31, 32 connected by a rod are pivoted to the frame. In the loading and weighing operations, the pans are locked by a spring latch which is, thereafter, released by a rotary cam 42 to allow the pans to rotate about their pivot to empty the upper one of its charge and bring the lower one into operative position. To compensate for variations in humidity, a sample may be taken from any part of the table where the density of the product is substantially constant and utilised to counterbalance the weigh beam. The Specification as open to inspection under Sect. 91 comprises also the modification in which the weighing devices may be used to operate a warning signal. This subject-matter does not appear in the Specification as accepted.
Patent GB-1047114-A (GB)
Title: Improvements in or relating to a process of making a crystalline, light stable nickel chelate of 1-nitroso-2-naphthol
IPC: C07F15/04
Filed: 1965-02-18
Abstract: The invention comprises a crystalline, light-stable nickel chelate of 1-nitroso-2-naphthol, the chelate being characterized by an X-ray diffraction pattern wich exhibits strongest d-spacings at about 11.6, 9.6, 6.0, 4.9, 4.5 and 3.6 Anstroms and a process for the preparation thereof which comprises (a) reacting a solution of 1-nitroso-2-naphthol in an inert liquid organic diluent which is a solvent for 1-nitroso-2-naphthol and which is essentially a non-solvent for said nickel chelate with a nickel compound, recovering the solid reaction product from the diluent, treating the recovered product with an electron donor solvent which is at least a partial solvent for the product while maintaining the temperature of the treatment at above about 50 DEG C. and then recovering the nickel chelate from the electron donor solvent or (b) reacting an aqueous ammoniacal solution of 1-nitroso-2-naphthol with a nickel compound at a temperature below about 40 DEG  C., recovering the solid reaction product from the aqueous medium and then heating the recovered product at a temperature above about 120 DEG  C. but below the decomposition point of the product until the product is converted to the crystalline, lightstable form of the nickel chelate.  Inert solvents specified for use in process (a) include alkanols, methoxyethanol, tetrahydrofuran, the dimethylether of ethylene glycol, aromatic hydrocarbon and acetonitrile and electron donor solvents specified include dimethylformamide, N,N-dimethylacetamide, hexamethylphosphonamide, N-methylpyrrolidone, dimethyl sulphoxide and sulpholane.  Examples are furnished.ALSO:An enamel comprises as pigment a crystalline, light stable nickel chelate of 1-nitroso-2-naphthol characterized by an X-ray diffraction pattern which exhibits strongest d-spacings at about 11.6, 9.6, 6.0, 4.9, 4.5 and 3.6 Angstroms (see Division C4), optionally aluminium paste, short oil soya alkyd resin and melamine formaldehyde resin.
Patent GB-1493311-A (GB)
Title: Colour cathode ray tube apparatus
IPC: H04N9/29
Filed: 1975-02-20
Abstract: 1493311 Cathode-ray tube systems SONY CORP 20 Feb 1975 7232/75 Heading H4T Mislanding of the beams of a colour television cathode-ray tube due to the effect of the earth's magnetic field and other ambient magnetism is compensated by means of an auxiliary deflection coil in which currents of appropriate waveforms are produced selectively in accordance with the orientation of the axis of the tube. Fig. 1, shows by broken lines the form which the mislanding takes for various directions in which the screen of the tube may be pointed and Fig. 2 shows the circuitry employed to produce currents, for correction of such mislandings, in the oppositely wound coil halves 19a, 19b (see also Fig. 3) which are positioned as shown at 30, Fig. 4, "behind" the normal deflection coils 33. Referring to Fig. 2, the ends 20a, 20b of the auxiliary deflection coil are connected to 180 degree spaced contacts on the rotatory part 201 of a click-switch 20 which coacts with a fixed part 202 provided with eight 45 degree spaced contacts 20 respectively concerned with the compass points shown in Fig. 1. The fixed contacts 20NE, 20N and 20NW are individually connected to the vertical deflection coils 2a, 2b via switchable resistors 4, 5 which adjust the magnitude of the vertical sawtooth current Fig. 6A in coil 19a or 19b when either of contacts 20a or 20 b is connected to such fixed contacts, the contact 20a always being connected to that one of the fixed contacts which designates the direction in which the screen of the tube points. Additionally, contacts 20NE, 20E and 20SE are connected via respective capacitors 25, 26, 27 to an inductor 11 at which a vertical sawtooth voltage produced (when slider contact connects fixed contacts 10a, 10b) by the integration via resistor 7 and capacitor 28 of a vertical frequency pulse developed across resistor 7 is produced, this sawtooth amplitude modulating a horizontal frequency sawtooth current (Fig. 6B) produced in coil 19a or 19b by negatively going horizontal frequency pulses supplied to transformer 17 to produce the waveform shown in Fig. 6C. In operation, when the tube screen points Northwards, contact 20a is connected to fixed contact 20N and a vertical sawtooth current (Fig. 6A) flows in coil 19a to effect the required correction. When the screen points Southwards, contact 20a is connected to fixed contact 20S and the same vertical sawtooth current flows in coil 19b. Since however, this coil is wound in the opposite direction to coil 19a a correcting current similar to that of Fig. 6A produces a correction field of opposite sense to that required for North pointing direction. In a similar manner for East and West pointing directions a correction current of the kind shown in Fig. 6c flows in either coil 19a or 19b and for the "diagonal" directions the correction currents are formed by combining the correction currents required for the two cardinal points adjacent to such "diagonal" directions.
Patent GB-956513-A (GB)
Title: Hydraulic pick or tool holder
Inventor: FRY WILLIAM HENRY
IPC: E21C35/19
Filed: 1962-02-24
Abstract: 956,513. Mineral-mining pick mounts. MACDONALD & CO. (HAYDOCK) Ltd. Feb. 19, 1963 [Feb. 24, 1962], No. 7300/62. Heading E1F. For the securing of a cutter pick 51 in a holder 12 associated with a mineral-mining machine there is provided in a chamber 16 so formed in the holder 12 as to open into a pick shank-receiving cavity extending into the holder hydraulically actuated means that can slidably urge a locking member into the cavity to engage against the shank of the tool to secure it in the holder. In the preferred embodiment a piston 35 can be urged outwards of a cylinder 21 formed in a block 17 pivotally secured by a pin 21 in the chamber 16 against a spring 41 to engage the pick shank 52 when grease is pumped into the cylinder 24 through a grease nipple 27 having a non-return valve. The piston is disengaged from the shank by the spring 41 when the non-return valve 34 is opened.
Patent GB-988384-A (GB)
Title: Dispensing closures
IPC: B65D47/30
Filed: 1962-02-26
Abstract: 988,384. Container closures. J. M. WILSON. (C. R. Jennings). Feb. 26, 1962, No. 7344/62. Heading B8T. A two-part dispensing closure comprises a cap 16 for a bottle &c., which is of flexible material, e.g. polyethylene and with its top 14 provided with an opening 22 surrounded by a flexible sealing ring 24, and shaped to pivotally receive a spout 40, preferably of the same material, with an outlet passage 38. The spout has axles 32 which snap into bearing openings 26, and a cylindrical part 36 which fits a corresponding part of the cap top and bears down on the sealing ring to form a seal therewith. The upper surface of the ring is curved to match the curvature of the part 36. In the closed position the outlet end of the spout is received in a slot 18 in the cap top, and when the spout is pivoted outwardly the passage 38 registers with the opening 22. Instead of axles 32, conical, semispherical or ring-shaped trunnions may extend from the cap into corresponding bearing openings in the spout. Specification 798,900 is referred to.
Patent GB-257837-A (GB)
Title: Improvements in change speed transmission mechanism
IPC: F16H3/66
Filed: 1926-03-17
Abstract: 257,837. Wiedmaier, A. A., and Field, L. M. March 17, 1926. Variable-speed epicyclic gearing is combined with the differential or balance gearing of a vehicle, all the planetary gears being supported on one spider 30. In an arrangement yielding solid driving and two reduced speeds, the planet pinions 33, 34 of separate trains are loose on the arms 31 of the spider outside the planet pinions 32 of the balance train gear. The driving side wheels 17, 18 of the trains are fast upon a wheel 5 secured to a rotary gear casing 6. Loose side wheels 24, 21 are fast upon sleeves 23, 20 adapted to turn one within the other. For the solid drive, the sleeve 20 is connected to the casing 6 by a clutch 42. The reduced speeds are effected by connecting these sleeves alternatively to a non-rotary web 38 by clutches 42, 41. More than two such reducing trains may be used. With a single train, two speeds only are produced. The loose planet gears 33, 34 tend to slide radially outwards. This may be counteracted by conical bearings separately fast on the spider arms, or, as shown, by a concave annular abutment 36 fast upon the inside of the casing 6.
Patent GB-286733-A (GB)
Title: Improvements in or relating to the insulation of high tension cables and high tension cable joints
IPC: H02G15/18
Filed: 1928-03-10
Abstract: 286,733. Engineering Products Corporation, Inc., (Assignees of Searing, H. R.). March 11, 1927, [Convention date]. Cable couplings.-The joints 4 of a multi-core cable are enclosed by a tube 7 and separated by partitions 8 both of insulating-material having a high dielectric constant, spreading of the cables being prevented by rings 9 of the same material. The joints 4 are first taped, and partition members, bent to form double partitions 8 and a cylindrical surface 10', are threaded between them, the tube 7 holding these in place, and the ends of the members 8 being notched at 12 to engage notches 13 in the rings 9 for mutual support. A sheathing 14 wiped on to the cable sheath at each end is provided with an aperture for the introduction of liquid or plastic insulating material to fill the joint.
Patent GB-291903-A (GB)
Title: Improvements in tracks or driving bands for self-laying track vehicles
IPC: B62D55/253
Filed: 1927-03-18
Abstract: 291,903. Crooke, S. E., and Crossley Motors, Ltd. March 18, 1927. Endless-track vehicles.-An endless track comprises two or more endless flexible metallic members A, transverse members B at intervals connecting the longitudinal members A, rigid driving blocks C attached to the upper surface of the track, and a covering or casing G of rubber, canvas or similar material. The ropes or, members A may be kinked, as shown, in passing through blocks D, D<1> carrying the members B, or the latter may pass through eyes formed in the ropes A. The blocks may be formed of metal and the holes d therein filled with lead, solder, sulphur or other fusible material, or the blocks may be of vulcanized rubber or fibre and the holes filled with rubber or other plastic material. The driving-blocks C may be central, as shown, or they may be in pairs leaving a central roller tread between, and they are secured to the blocks D<1> by screws d' which may also serve to secure channel plates H carrying renewable rubber-tread blocks. The members A may consist of links of wire rope connecting the transverse members B together. The track may be formed as a continuous one or may have its ends connected together by a screw or other coupling.
Patent GB-180775-A (GB)
Title: Improvements in and relating to machines for coating chocolates
IPC: A23G3/22
Filed: 1921-03-09
Abstract: 180,775. Sonsthagen, A. March 9, 1921. Coating confectioners' goods.-In a coating machine wherein the cores pass s through a stream of chocolate, a glossy appearance is imparted to the coated goods by subjecting the chocolate to a rapid mixing or emulsifying action in a container from which air is excluded, the mixing being effected immediately before application to the cores or at such a time that the period between the mixing and application is as short as possible. Fig. 1 shows the application to a machine of the typs described in Specification 158,993, the mixer 7<a> being of the type described in Specification 134,451, [Class 86, Mixing &c.]. The chocolate is scraped from the revolving annular body 1 into a receiver 19 and is discharged from an elevated opening 20, angularly. adjustable in a vertical plane, into a trough 9 of wire netting, from whence it falls on to the cores on the convever 7. The mixer body is formed in halves which are held together by a projection 12 which engages in a longitudinal groove 13 and wing nuts and bolts. When the mixer body is opened the shaft 9<a> is prevented from falling out by a spring-controlled arm 23 which normally presses against the shaft. A plate 24 directs surplus chocolate from the receiver 19 and back to the main reservoir.
Patent GB-567463-A (GB)
Title: Improvements in valve mechanism for internal combustion engines
IPC: F01L5/04
Filed: 1943-05-13
Abstract: 567,463. Two-stroke engines; valves. JAMESON, J. L. May 13, 1943, No. 7676. [Classes 7 (ii) and 7 (vi)] In a two-stroke engine, a piston valve 7 controlling the working fluid and arranged coaxially with the cylinder 1 is reciprocated oppositely to the piston 3 by an eccentric 9 on the crank-shaft, the eccentric operating a push-rod 8 which at its upper end slides in a guide 8<1> and carries a pivoted arm 11 adapted to rock a sleeve arranged transversely of the cylinder near its head and formed rigid with an arm 13 to which the valve 7 is pivoted. The sleeve is mounted eccentrically on a pivot rod, the eccentricity permitting the arms to adjust themselves to the straight-line rnotions of the valve and push-rod.
Patent GB-1358962-A (GB)
Title: Fermentation process for the production of erythritol
IPC: C12P7/18
Filed: 1972-02-18
Abstract: 1358962 Erythritol by fermentation PFIZER Inc 18 Feb 1972 [12 Nov 1971] 7747/72 Heading C2C A process for producing erythritol comprises aerobically fermenting Candida lipolytica ATCC No. 20341 for 4 to 9 days in a nutrient medium containing at least one n-alkane of from 12 to 18 carbon atoms as the principal source of assimilable carbon intimately mixed with an aqueous phase containing an assimilable source of nitrogen, minerals and other usual nutrients, and recovering the erythritol directly by concentrating the filtered and deionized fermentation broth.
Patent GB-1504973-A (GB)
Title: Apparatus and method for converting an asynchronous binary input signal into a binary output signal having transitions synchronous with a clock signal
IPC: H04L25/493
Filed: 1975-02-25
Abstract: 1504973 Data transmission; synchronizing XEROX CORP 25 Feb 1975 [6 March 1974] 7815/75 Heading H4P In apparatus for synchronizing with a clock,  two-level digital transitions, e.g. from the threshold  detector 120 of a facsimile system, a counter 301 is pulsed from line 305 at a multiple of the clock rate, the count being started upon the occurrence of binary one information and stopped after reaching a predetermined count upon the occurrence of a following clock pulse. (A suitable predetermined count represents a half-clock period.) This clock pulse is utilized to provide a binary one output signal (by setting a flip-flop 335 via gate 339). On a transition of the input signal to a binary zero state, the counter is switched (by flip-flop 347) to its countdown state. After reaching the predetermined count, the following clock pulse is utilized to change the output to the binary zero state (by resetting flip-flop 335 via gate 333). This reduces variations in run lengths which occur when transitions have different phases with respect to the system clock.
Patent GB-876284-A (GB)
Title: Improvements in or relating to the drawing of rolled or extruded material
IPC: B21C1/30
Filed: 1960-03-04
Abstract: 876,284. Drawing-machines. SCHUMAG SCHUMACHER METALLWERKE G.m.b.H. March 4, 1960 [March 9, 1959], No. 7827/60. Class 83 (4). A method of drawing rolled or extruded stock comprises thrusting the leading end of the stock through a die in more than two movements so that a sufficient length of stock passes through the die to enable the drawing to be completed by smoothfaced grippers which apply a pressure per unit area which is too low to damage the surface of the leading end of the drawn material. The apparatus comprises a bed 3 on which slides 2 and 8 counter-reciprocate, they are driven by cams 16 and 17 mounted on a main shaft 15 which is driven bv a motor 11. The stock passes through straightening rolls 19 and 20 to a thrust feed slide 4 which grips the material and forces it through a die 1. The slide 4 is driven by a single-lobe cam 13 which is geared to the shaft 15 so that it makes, say, four forward thrusts while the slide 2 completes one cycle. The slide 2 has long smooth-faced jaws which grip the material to complete the drawing and the slide 8 has shorter smooth-faced jaws. In a modification the slide 4 is driven by a multi-lobe cam so that the gearing between the cam and the main shaft 15 is unnecessary.