baber/WOPTO huggingface dataset:
Patent GB-676606-A (GB)
Title: Process for the purification of spent sulphuric acid
Inventor: ELTENTON GEORGE CHARLES
IPC: C01B17/92
Filed: 1951-02-19
Abstract: Carbon and carbonaceous material are removed from spent sulphuric acid, e.g. that derived from a process for producttion of alcohols from olefins, by mixing with not more than 15 per cent by weight of a water-soluble anionic surface-active agent, blowing a non-reactive gas, e.g. air, nitrogen, carbon dioxide, or furnace gases, through the resulting mixture, allowing the acid to settle and separating the lower layer of cleaned acid from the upper layer of carbonaceous sludge.  Surface-active agents, usually present to about 0.2 per cent by weight, may be longchain alkyl acid esters of inorganic oxygen-containing polybasic acids, particularly secondary alkyl acid esters of sulphuric acid described in Specifications 459,078, 459,079, 459,080, and 459,117, [all in Group IV], or salts therof, alkyl aryl sulphonic acids or salts thereof such as dodecyl cumene and dodecyl benzene sulphonic acids, sulphonic acids or salts thereof, produced in the treatment of hydrocarbon oils with sulphuric acid or oleum, soaps such as alkalic metal stearates, oleates, or naphthenates, and sulphonated fatty acids, fatty acid esters and glycerides.  About 1 per cent of an oleophilic organic liquid, e.g. liquid hydrocarbons such as a spindle oil or aromatic extract from refining mineral lubricating oils, an alcohol or ester, by-product polymers which separate on diluting or neutralizing alkyl sulphuric acid ester crude products, residues from distillation of methyl-isobutyl ketone, diisobutyl ketone, hexylene glycol, mesityl oxide, and amyl and higher alcohols, may be added to coalesce the carbon particles.  The acid should be of strength 45-50 per cent by weight and treatment temperatures up to 100 DEG C may be used. Sludge from previous batches may be added to subsequent batches or in a continuous process some sludge may be recycled.  Before the sludge is discarded it is diluted with water, allowed to settle, and cleaned diluted acid separated which is either used to dilute spent acid to the required strength or passed to a concentrator.
Patent GB-1065592-A (GB)
Title: Photochromic matrices
Filed: 1964-01-31
Abstract: A reversible photochromic matrix that is capable of forming upon U.V. irradiation a visible image erasable by irradiation with visible light comprises a support coated with a reversible photochromic layer comprising a water-permeable hydrophilic colloid having dispersed therein a solution of at least one photochromic compound dissolved in a water-immiscible solvent which is one of those listed in Specification 541,589 such as tri-o-cresyl phosphate; or alternatively triethylene glycol, ethylene glycol mono-benzylether or glycol salicylate, the photochromic compound being soluble in aqueous media in its coloured form and insoluble in aqueous media in its colourless form, e.g. compounds of the formula <FORM:1065592/C4-C5/1> wherein Z represents the non-metallic atoms necessary to complete a benzene ring fused to the indolino group at the 4,5, 5,6 or 6,7 positions; R and R1 each represents H, alkyl, alkoxy, halogen, e.g. Cl, Br, I or F or nitro; and R2, R3 and R4 each represents substituted or unsubstituted alkyl 1-7C, or substituted or unsubstituted aryl, such that the total number of carbon atoms in R2-R4 is not greater than 9.  The substituent groups of the alkyl or aryl groups are hydroxy, phenyl, sulphonamido, carboxyl, sulphamyl, or chloro radicals.  The dispersion of the photochromic compound solution may be facilitated with a propylated naphthalene sulphonate. Specified hydrophilic colloids are gelatine, collodions, gum arabic cellulose derivatives, and synthetic resins, such as the amphoteric copolymers of U.S.A.  Specification 2,949,442.  The support may be paper, a cellulose derivative or a synthetic resin.ALSO:61 - Nitro - 1 - (b  - hydroxyethyl) - 3,3 - dimethyl - indolinobenzopyrylo spiran is prepared by reacting 1 - (b  - hydroxy ethyl) - 2,3,3-trimethyl indolinium bromide with 5-nitro-salicylaldehyde. The intermediate, 1-(b -hydroxy-ethyl) - 2,3,3 - trimethyl indolinium bromide is prepared from 2-bromoethanol and 2,3,3-trimethyl indole.
Patent GB-215456-A (GB)
Title: Improvements in or relating to telephone-receivers
IPC: H04R13/02
Filed: 1923-02-12
Abstract: 215,456. Murray, R. L., and Telephone Manufacturing Co., Ltd. Feb. 12, 1923. Magnetic instruments.-A loud speaking telephone receiver comprises a U-shaped permanent magnet 10 having its pole extremities 11 inturned towards one another and bent to carry bobbins 12, a tie-piece 13 of non-magnetizable material, such as brass, secured to and across the inturned portions 11, a projection 24 from the tie-piece 13 disposed centrally between the limbs of the magnet 10 and extending towards the loop, a casing 33 enclosing the parts, and manuallyoperable adjusting-means available from outside the casing to engage with the free end of the projection 24. The tie-piece 13 fits snugly between the limbs of the magnet 10 and damps out vibrations of the pole extremities. These polepieces 11 and the tie-piece 13 form an entity which is separable as a whole from the horseshoe magnet. The limbs of the magnet 10 pass through holes in a casing 15 of aluminium, between which and a cover 18 the diaphragm 17 is clamped. The casing 15 is fitted with a tube 23 which serves as a guide for the projection 24. Pins 25 on this projection 24 work in slots in the tube 23 and compress a spring 26 against the casing 15. A bell-crank lever 29 is pivoted in a fork secured to the casing 15, one limb engaging the projection 24 and the other limb being engaged by a screw 31 carried in a threaded boss on the casing 33. The casing 33 is flanged at the base and attached to a base block 34. According to the Provisional Specification, instead of the tie-piece 13 the casing 15 may be made sufficiently thick to afford slots of the necessary dimensions for steadying the magnet limbs. A centrally disposed rod is rotatably mounted in the loop of the magnet 10 and screw-threaded within the tiepiece or the back of the casing 15, the rod being rotated by a knurled flange to adjust the position of the pole-pieces, a spring being interposed between the flange and the loop of the magnet, and a lock-nut 'being provided to fold the parts in adjusted position. The limbs of the horseshoe magnet may, in an alternative construction, be enclosed and fit tightly within a tube of brass and a wedging piece be forced between the limbs. The position of the tube together with the magnet supported thereby is adjustable.
Patent GB-720709-A (GB)
Title: Improvements in and relating to vibrating apparatus
IPC: B07B1/32
Filed: 1953-02-13
Abstract: 720,709. Separating; grinding. DAMOND, E. Feb. 13, 1953 [April 16, 1952], No. 4162/53. Classes 59 and 117. [Also in Group XXIII] An open-ended casing 19, Fig. 2, having an annular peripheral trough 30 and vibrating means 34 under its base, is adapted to receive interchangeable containers so as to act as a filter, a buffing or a grinding apparatus. The vibrating means 34 may be a motor mounted vertically or horizontally, Fig. 8 (not shown), or may be an electro-magnetically operated hammer, Fig. 9 (not shown). The casing 19 is supported on shock-absorbing members 18 in a frame 10. The casing 19 may be fitted with a sieve 42, Fig. 3, or bowls, Figs. 4, 5, 6, for grinding and buffing. The bowl of Fig. 6 may have an aperture at its apex, Fig. 7 (not shown) to allow the material to fall into the circular trough 30, Fig. 2, for delivery from the spout 32.
Patent GB-292197-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D7/00
Filed: 1927-02-15
Abstract: 292,197. Berkel, C. F. M. van. Feb. 15, 1927. Counters.-A slicing-machine, is so constructed and arranged that when fitted to a shop counter, ice box or other supporting structure, part of the machine is above the plane of top of the supporting structure and part below, thereby economizing space and enabling the cost to be reduced by leaving the parts hidden from view without the usual high finish, The invention may be applied to any type of slicing machine, but, as shown, is applied to a disc knife reciprocating table machine. In Fig. 1 the base plate 2 of the machine is received in a recess 8 in an open frame 1 which is arranged in an opening in the counter A, and is raised or lowered bv a handwheel 35 and rack and worm gearing 30, 33, 36. The machine may thus be lowered into the counter when not in use. As shown in Fig. 4, the base plate 2 is pivoted at 38 to the frame 1, and struts 41, pivoted at 42 to the frame 1, have pins 41<1> which engage notches 40<1> on the underside of the plate 2 to keep the machine tilted for inspection or repair of the driving-mechanism. Shock-absorbing means, e.g. torsion spings, act on the part 42 and permit the struts to be dropped when the machine is to be lowered. The pins 41<1> rest on ledges 45 and the frame is recessed at 44 to receive the notched member 40. The lower parts of the slicing machine may be enclosed in a casing to prevent oil &c. from being deposited. The guides for the reciprocating table may be above or below the top of the counter or other structure, and the base of the machine may be formed with flange or bead adapted to be placed on the structure, or on a movable frame around the opening therein. The guide bars for the carriage, the knife supporting bracket and the supports for the driving mechanism may be secured to the structure or its supports, while a loose cover may, in conjunction with the slice-receiving table, close the opening in the structure.
Patent GB-546918-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G37/00
Filed: 1941-03-28
Abstract: 546,918. Endless - belt conveyers. THOMPSON (WOLVERHAMPTON), Ltd., J., and WILLIAMS, G. P. March 28, 1941, No. 4205. [Class 78 (i)] Relates to conveyers of the kind comprising a main conveyer belt 5 having a portion of channellike form passing-through a trough or tank 6 containing liquid in which the channel portion of the belt is immersed, the belt extending in an upwardly-inclined direction to a delivery or throw-off drum 12. Such a conveyer is described in Specification 326,392, [ Class 78 (i)], for dealing with ashes which, when discharged into the channel portion of the belt, are quenched in the liquid and carried up the inclined part of the belt to the delivery point. According to the present invention an auxiliary conveyer 19 is provided to assist in the carriage of fine materials up the inclined part of the main conveyer 5 and is positively driven at each end. In the construction shown the auxiliary conveyer comprises an endless belt 19 provided with cross slats 25 and passing over rollers 22 and end driving drums 20, 21. The auxiliary conveyer is driven at a speed slightly greater than that of the main conveyer and the end drums 20, 21 may be driven either by separate electric motors or, as shown, by chain gear 24, 23 from rollers 9, 14 of the main conveyer. The lower end of the auxiliary conveyor is driven to ensure that the belt 19 dips into the liquid in the trough 6 and makes contact with the fine material on the main belt 5. The latter is deeply troughed or channelled in the trough 6 by rollers 9 and to a less extent on the incline by rollers 10. The trough 6 is constructed as described in Specificacation 545,137.
Patent GB-555649-A (GB)
Title: Improvements in and relating to electric discharge devices of the liquid cathode type
IPC: H01J13/02
Filed: 1942-03-31
Abstract: 555,649. Mercury vapour converters. BRITISH THOMSON-HOUSTON CO., Ltd. March 31, 1942, No. 4282. Convention date, April 1, 1941. [Class 39 (i)] In a mercury pool rectifier the metal envelope is in two parts 10, 11 welded together at the flanges 13, 14, and only the lower part is surrounded by a cooling jacket 38 detachably clamped thereon. Studs 49 resting against the flange 14 spaces the jacket accurately on the envelope. The surface of the envelope part 11 may be tinned to facilitate heat conduction. The mercury cathode 26 is restricted to a depression 29 in the bottom of the envelope, mercury being prevented from entering the exhausting tube 16 by a raised eyelet. The starting electrode 27 is carried by the conductor 31, which passes through the glass bead 33 on the eyelet 32. In a modification the upper envelope part is of larger diameter than the lower and a plate is inserted between the joining flanges, the plate extending into the discharge chamber and having an orifice for the passage of the discharge.
Patent GB-811808-A (GB)
Title: Improvements in or relating to melt-spinning
Inventor: DAVIES GERALD THOMAS
IPC: D01D1/04
Filed: 1957-02-08
Abstract: <PICT:0811808/IV (a)/1> <PICT:0811808/IV (a)/2> Apparatus for melting and spinning fibre- or film-forming material comprises means, e.g. screw-conveyer 3, for forcing such material in solid particulate form under pressure to a melting means, e.g. grid 37, in chamber 35, means for collecting molten material directly from the melting means, e.g. baffle plate 39 with central drain 41, and causing it to flow downwardly into a melt pool which has level-sensing means, e.g. electrical probe 79, for automatically maintaining the level substantially constant by controlling the feed means, means for introducing a gas, e.g. pipe 55, for excluding free oxygen from that part of the chamber between the melting means and the surface of the pool and for keeping the pool at a constant pressure at or about atmospheric pressure, and means for withdrawing molten material from the pool, e.g. gear pump 47, output channel 61, and gear pumps 93, 95, and extruding it through a shaped orifice or orifices 101. Preferably the melting grid is heated internally by fluid circulation therethrough.  As shown, supply shoot 1 feeds solid chip or flake polymer to the screw conveyer 3 and the walls of that part of the melting chamber between the output end of the screw conveyer and the top of the grid diverge so that the half angle of the frusto cone is 15-45 degrees.  Spreaders 25, 27 attached to rotating shaft 13 ensure controlled feeding of polymer chips to screw conveyer 3.  Ports 33 allow venting of oxygen-expelling gas, e.g. steam, to atmosphere. Probe 79 is arranged so that an electric current passes round the circuit via probe, polymer and wall of the melting chamber and controls the motor 5 driving screw conveyer 3, in the supply of which there is a starter circuit having a no volts relay.  A second probe, which does not extend so far down into the chamber, may be arranged to actuate an alarm signal in the event of probe 79 failing.  A time delay relay in the circuit controlled by the probe relay may also be inserted in order that the screw motor may not be stopped by a brief contact of molten polymer with the probe, as might arise in the case of a bubbly melt.  If the pressure above the grid rises above, say, 70 p.s.i. the screw will be stepped by the motor being tripped by an overload relay (Fig. 1) or by the rubber coupling pressure-responsive means acting on the no-volts relay (Fig. 2), and polymer feeding will not be resumed until the pressure drops to the desired level.  If the level of the pool of molten polymer rises above that desired the screw will be stepped, since the probe will be rendered conductive and again polymer feeding will not be resumed until extrusion of the excess polymer reduces the level of the pool.  Nylon is specified as a fibre- or film-forming material.  Specifications 533,307, [Group IV], and 653,757 are referred to.
Patent GB-490385-A (GB)
Title: Improvements in demountable electric discharge devices
IPC: H01J9/50
Filed: 1937-02-15
Abstract: 490,385. Discharge apparatus. M-O VALVE CO., Ltd., and LE ROSSIGNOL, R. Feb. 15, 1937, No. 4448. [Class 39 (i)] In demountable discharge devices, particularly heavy duty thermionic valves, a valve comprising solid abutment surfaces is incorporated in the connection to the evacuating pump so that the latter may be disconnected between evacuating operations. The valve envelope is closed by a plate 5, Figs. 1 and 2, which makes a tight joint therewith by a washer 13 coated with grease, and which supports the grid 6 and the filament whose leads 9, 10 pass through glass tubes 7, 8. The connection to the evacuating pump is made by way of a casing 18 which has a flanged extension 19 adapted to abut against a flanged extension on the pump and be secured thereto to form a tight joint. The casing communicates with the interior of the valve by a pipe 15 and contains a ballvalve 17 seating on soft non - oxidizable metal such as gold, operated from the outside bv a screw 20, a bellows 21 being provided to allow movement of the screw rod. After evacuation, the device is disconnected from the pump and grease introduced through the extension 19 packed round the valve. Alternatively, the grease may be contained in a vessel enclosed in the casing 18 and tilted when required by a magnet. Specifications 345,224 and 450,275 are referred to.
Patent GB-374089-A (GB)
Title: Improvements in or relating to cooling towers
IPC: F28C1/00
Filed: 1931-01-22
Abstract: 374,089. Cooling-towers. BALABAN, L., 2, Trabenerstrasse, Grunewald, Berlin. Jan. 22, 1931, No. 4565/32. Divided on 374,077 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 24, 1931. [Class 29.] The wall or shell 1 is built up of preformed concrete slabs 1a, Fig. 4, which are provided at one edge with a single flange 5a and at the other with a double flange 5c, 5d and a web 5b. The single flange fits into the recess between the double flange of the adjacent slab, the recess being filled with concrete reinforced by rods 24 so as to provide external ribs 5, Fig. 1, on the wall. At intervals the flanges 5d are broken off the slabs and the recess is filled with concrete to provide bracket-like ribs 5e, Fig. 5, and 10, Fig. 1, for supporting an external water trough D. The tower wall is provided with top and bottom rings 2, 3, and the trickling material comprises moulded concrete blocks supported on beams 14, 13 and stanchions 12.
Patent GB-1202184-A (GB)
Title: Connector and method for attaching same to printed circuit board
IPC: H01R12/58
Filed: 1969-01-28
Abstract: 1,202,184. Two-part couplings. ELCO CORP. 28 Jan., 1969 [25 March, 1968], No. 4693/69. Heading H2E. Each contact 22 of a cord edge connector comprises a nose section 26 connected to a tail section 28 by a body section 30 which has an upper portion separated from a lower portion by a reduced portion 40, said lower portion being twisted relative to the upper portion (Fig. 2a, not shown) after insertion into a hole in the insulating housing 24 of the connector so that shoulders 54 on the lower portion overlie the bottom 78 of the housing and the contact is thus attached to the housing (Fig. 3, not shown). A downward force applied to the housing drives a gripping shank 52, of rectangular cross-section, on the lower portion of each contact into an interference fit with a circular hole in a mother board (Figs. 4, 5, not shown) said hole being plated through with a conductive material. A daughter board (14, Fig. 1, not shown) mountable in the connector is also described.
Patent GB-346509-A (GB)
Title: Turning lathes and like machine tools
IPC: B23Q5/00
Filed: 1930-02-12
Abstract: 346,509. Turning; screwing. HERBERT, SIR A., Dunley Manor, near Whitchurch, Hampshire, and LLOYD, A. H., Langwm, Warwick Avenue, Coventry. Feb. 12, 1930, No. 4733. [Class 83 (iii).] Lathes ; steady rests.-A turning lathe, particularly for turning and screwing stay bars for boilers, has a turning-tool and a screwing-tool mounted on the same saddle for simultaneous operation on the same bar, the two tools being adapted to rotate relatively to one another about the work. The saddle 3 which mav be fed bv a lead-screw or other means carries a base 7 having a vertical web 6 provided with a bush for steadying the work which is fed through the chuck 5. The base also carries a turning-tool 9, a parting-tool 10, and a selfopening die 8 driven from a longitudinal shaft 16 through a gear train 17. The parting-tool may be controlled by a lever 11 and the turning-tool is operated at the required times by means of a vertical cam rod 12 and adjustable tappets 14, mounted on a bar 15 acting in the manner described in Specification 226,622, [Class 83 (iii), Metals, cutting]. By this arrangement of tools both the screwing and the carriage feeds may be suitable for the work to be performed. In one example the work rotates at 1000 r.p.m. and a turning feed of 44 cuts to the inch is imparted to the saddle. If 11 threads per inch are to be cut the screwing die is rotated at 750 r.p.m. thus giving a net screw cutting speed of 250 r.p.m. and producing the required 11 threads per inch on the work. A sleeve 19 is adapted to engage the work and to be operated by a lever 20 to withdraw the work after it has been parted. The machine may if desired be arranged for entirely automatic operation.
Patent GB-568262-A (GB)
Title: An improved fluid pressure actuated remote control system
IPC: F16K31/42
Filed: 1943-04-23
Abstract: 568,262. Hydraulic transmission of power. GENERAL AIRCRAFT, Ltd., and LISLE, W. G. April 23, 1943, No. 4741. [Class 69 (ii)] [Also in Group XXVIII] In a remote control system of the kind comprising a fluid-pressure motor 7 controlled by a valve 5 actuated electrically, and including follow-up mechanism 11, 12 for restoring the valve-actuating mechanism to its normal position, the electrical operation of the valve is effected through a variable speed device 14. As shown, the valve 5 is solenoid operated under the control of a switch having an actuating lever 10 and a follow-up lever 11. Lever 10 is connected to a sliding member 16 carrying a jockey wheel 17 which rotates in contact with a rotatable drum 14. The angle of the jockey wheel, and hence the speed of traverse of the member 16, is controlled by a hand lever 18. This lever is set to a position corresponding to a desired movement of the motor 7; member 16 thereupon moves and actuates the switch arm 10 and the valve 5 moves to a position in which pressure fluid is supplied from the pump 2 to the motor cylinder. This action continues until the follow-up lever 11 and actuating lever 10 resume their normal position and the solenoid is de-energized. Lever 18 is then returned and displaced in the opposite direction for reverse movement of the motor. In a modification, the jockey wheel is movable across the face of a rotating disc and a rotary fluid-pressure motor is used. Specification 545,811 is referred to.