find it to their interest were they to turn their attention to these particulars, so as to produce a portable safety-lamp of low price, convenient use, and giving a good light, such as would be suitable for carrying about in warehouses and manufactories. M. S. B. COMPARATIVE POWERS OF DIFFERENT Sir, My attention has, from time to time, been attracted by very inconsistent statements respecting the degree of power which various voltaic batteries possess. Mr. Ward stated, at the recent meeting of the British Association at Birmingham, that Mr. Grove's arrangement is the most energetic of all batteries; that, next, in the series, stands Daniell's battery; that Smee's has less power than either of the others; though in all, the same amount of surface is exposed to the exciting fluid. Now this is very curious; for Daniell's battery has copper for the negative metal, while in Smee's arrangement platinized silver is employed, which has been stated to be the best conductor yet known. Another anomaly remains to be mentioned. It is a principle generally adopted, that to obtain the greatest energy in a voltaic battery, metals of the greatest difference in their oxidation should be employed. Then, how is it that iron and copper have been found to constitute a more powerful voltaic circle than zinc and copper?-for the difference of the affinity which zinc and copper has for oxygen is greater than that of iron and copper. I am, Sir, yours, &c., Carmarthen, Sept. 24, 1849. SPECIFICATIONS OF ENGLISH PATENTS ENROLLED DURING THE WEEK ENDING 25TH OF OCTOBER, 1849. JOHN ORMEROD, Holt-Holme Mill, near Newchurch, Lancaster, spinner. For improvements in carding cotton and other fibrous substances. Patent dated April 19, 1849. Mr. Ormerod's carding engine consists of the ordinary main cylinder, around a portion of the periphery of which are arranged in pairs a number of working rollers, with a smaller cleaning roller between the working rollers of each pair. The feeding rollers and licker-in are supported in the framework in front of the main cylinder, while the doffing cylinder is similarly supported behind it. The cleaning rollers are made to revolve by a cord or band passing round a grooved pulley keyed on the axle of the cylinder, and round grooved pulleys keyed on their respective axles. Each alternate working roller is driven in the same direction as the main cylinder, while the rest are driven in the opposite one, by means of an endless band passing over grooved pulleys keyed upon their axles, and round a grooved pulley supported on a stud, bolted in a segmental slot, and driven by a pinion on the axle of the doffing cylinder. By this arrangement the cotton or other fibrous material is alternately stripped off and fed on to the main cylinder. Between each pair of working rollers is fixed a dust collector, which is composed of two segmental metal plates joined together at right angles, and supported by set screws, with one of their concave faces towards the circumference of the main cylinder, and the other just above the second working roller of each pair. The upper part of the vertical plate of each dirt collector is capable of being adjusted at any distance from the teeth of the carding cylinder, which, when in operation, throws the dirt off it on to the horizontal plate. Similar dirt collectors are applied to the doffing cylinder, the feeding rollers, and to the licker-in. Claims.-1. Driving some of the working rollers, placed round a portion of the periphery of the main cylinder, in the same direction as the latter. 2. The application in carding engines of the dirt-collecting apparatus, as described. CHARLES ALEXANDER BROQUETTE, Rue Neuve St. Nicholas, St. Martin, France, chemist. For improvements in printing and dying fibrous and other materials. Patent dated April 21, 1849. These improvements refer to the employment of nitrogenous compounds obtained by the decomposition of milk or the muscular parts of animals (or, in other words, to the use of the causeum of the ancients). The mode of application is as follows:-Ten pounds of the nitrogenous compounds are mixed with from 50 lbs. to 60 lbs. of water and 1 lb. of ammonia. The compounds are, however, first boiled for twenty minutes in a portion of the water, and when they are partially cooled down, the ammonia and remaining portion of the water are mixed with them, and the whole well stirred up together, after which they are mixed up with 3 per cent. of olive oil and 2 per cent. of an alkaline earth (by preference lime), when they are ready for being used with a colour not injuriously affected by the lime or ammonia. Steam is then applied, to cause the compounds to coagulate on or in the texture of the fabric. The yarn may, if desired, be saturated with the compounds previously to its being woven into a fabric, which is afterwards to be dyed or printed. Claims.-1. The employment of nitrogenous compounds in combination with an alkaline earth in the dyeing and printing of cotton and other vegetable fibrous materials. 2. The employment of nitrogenous compounds, coagulated by heat alone or by chemical agents, for the impregnation of vegetable fibre. LOUIS VERNET, Buenos Ayres. For a method of preserving from destruction by worms, insects, decay, and fire, certain vegetable and animal substances. Patent dated April 24, 1849. This invention consists chiefly in impregnating, saturating, or coating the substance to be preserved with a weak solution of arsenic, alone or combined with other materials. The solution is obtained by boiling an arsenious acid in water until it is dissolved and the fluid becomes clear and transparent. The proportion of arsenic to water is one pound to forty gallons, and care should be taken not to allow the fire to touch the sides of the boiler above the water, which would cause the arsenic to sublimate, and act injuriously on the health of the workman. The quantity of water evaporated should be replaced by the same quantity of fresh water, in order that the relative proportions above mentioned may be maintained. Or, a concentrated solution may be formed by dissolving one pound of arsenic in five gallons of water, which can be preserved for any length of time in wooden vessels until required for use, when every five gallons must be diluted with thirty-five gallons of water. The article may either be immersed in or washed over with the solution, and then dried, whereby it will acquire a thin coating of arsenic, which will be imperceptible to the senses, but a sufficient preservative against the ravages of insects, &c. Or, it may be impregnated with the solution by exhaustion or pressure. When the solution is required to dry quickly, six pounds of alum to one pound of arsenic are dissolved in it. To preserve timber from fire, it is to be impregnated with a solution of one pound of arsenic, six pounds of alum, and ten pounds of potass, in forty gallons of water. To preserve timber immersed in water from decay and the ravages of the worm, it is to be painted over with the solution mixed with oil or any suitable tarry matters. Claims.1. The use of weak, simple arsenical solutions to preserve animal and vegetable substances from insects and decay. 2. The use of weak arsenical solutions, in conjunction with other matters, or with oil or tar, to preserve animal and vegetable substances from fire and worms. Specification Due, but not Enrolled. WILLIAM KILNER, Sheffield, engraver. For improvements in manufacturing railway and other axles and wheels; and in machinery to be employed in such manufacture. Patent dated April 24, 1849. NOTES AND NOTICES. The Inflexible, commanded by our old and much esteemed correspondent. Captain Hoseason, has recently returned to England, after a steam service round the world, far exceeding anything yet accomplished by any other vessel, either of the Royal Navy or of the commercial marine, whether we look to the extent of the voyages performed, or to the intelligent care with which the work done and the various circumstances affecting it have been noted and recorded, or to the value of the general results deducible from the Inflexible's performances. Captain Hoseason has confided to us the whole of his logs, papers, diagrams, &c., for examination; and we propose to give, in an early supplementary part, a digest thereof, to which Captain H. has kindly promised to add various explanatory notes and comments of his own. We hope to be able to give this supplementary part early in the ensuing year. Bain's Electro-Chemical Telegraph.-The New York and New England Telegraph Company is now engaged in constructing a line of telegraph between New York and Boston, under a charter from the legislature of New York, making use of Bain's invention, which has been patented by our Government. The whole line is under contract, and the section between New York and New Haven is nearly finished.-New York Tribune. Use of Coloured Glasses to Assist the View in Fogs.-The following curious observation is made by M. Luvini, of Turin, in a letter to the editor of L'Institut, at Paris. If it be verified, it may prove to be of importance to geodetical operations, as well as in observations at sea:-"When there is a fog between two corresponding stations, so that the one station can with dificulty be seen from the other, if the observer passes a coloured glass between his eye and the eye-piece of his telescope, the effect of the fog is very sensibly diminished, so that frequently the signals from the other station can be very plainly perceived, when, without the coloured glass, the station itself could not be seen. The different colours do not all produce this effect in the same degree. The red seems the most proper for the experiment. Those who have good sight prefer the dark red, those who are short-sighted like light red better. The explanation of this effect seems to depend upon the fact that the white colour of the fog strikes too powerfully upon the organ of sight, especially if the glass have a somewhat large field. On the contrary, by placing a coloured glass between the eye of the observer and the eye-glass of the instrument, the intensity of the light is much diminished by the interception of a part of the rays; the observer's eye is less wearied, suffers less, and con sequently distinguishes better the outlines of the object observed.' LIST OF SCOTCH PATENTS GRANTED BETWEEN THE 22ND OF SEPTEMBER, AND 22ND John Mason, of Rochdale, Lancaster, machine maker, and George Collier, of Barnsley, York, manager, for certain improvements in machinery, or apparatus for preparing and spinning cotton, and other fibrous materials, and also improvements in the preparation of yarus and threads, and in the machinery or apparatus for weaving the same. Sealed, September 24; six months. William Parkinson, of Cottage-lane, City-road, Middlesex, successor to the late Samuel Crossley, for improvements in gas and water meters, and in instruments for regulating the flow of liquids. September 24; six months. James Aitken, of Cook-street, Glasgow, manufacturer, for certain improvements in the preparation of cotton and other yarns for weaving, and in the machinery employed therein. September 27; six months. John Robertson, of Patterson-street, Stepney, Middlesex, engineer, for improvements in machinery for moving and raising weights. Oct. 3; 6 months. Ernst Grapel, of Birmingham, Warwick, esq., for improvements in marine vessels, in apparatus for the preservation of human life, and in moulding, forming, and finishing hollow and solid figures, composed wholly or in part of certain gum, or combination of certain gums, also improvements in dissolving the aforesaid gums, and in apparatus or machinery to be used for the purposes above mentioned. October 8; four months. Robert Clegg, Joseph Henderson, and James Calvert, of Blackburn, Lancaster, manufacturers, for improvements in looms for weaving. October 8; four months, Thomas Lightfoot, of Broad Oak, within Accrington, Lancaster, chemist, for an improvement in printing cotton fabrics. October 11; six months. William Gaspard Brandt, of 16, Compton-street, Brunswick-square, Middlesex, for improvements in the construction of the bearings of railway enOctober gines and railway carriages now in use. 11; four months. LIST OF IRISH PATENTS FROM THE 21ST OF James Warren, of Montague-terrace, Mile Endroad, Middlesex, gent., and Willoughby Theobald Monzani, of Saint James's-terrace, Bermondsey, Surrey, gent., for improvements in the construction of bridges, viaducts, and aqueducts, and in anchors, and in drilling and boring braces. Sept. 27; six months. Robert Plummer, of the town and county of George Henry Dodge, of America, but now residing at Manchester, Lancaster, for certain improvements in machinery for spinning and doubling cotton, yarns, and other fibrous materials, and machinery or apparatus for winding, reeiing, bailing, and spooling such substances when spun. October 15; six months. Charles Shepherd, and Charles Shepherd, junior, both of Leadenhall street, London, chronometer makers, for certain improvements in working clocks, and other time keepers, telegraphs, and machinery, by electricity. October 15; four months. Thomas Beale Browne, of Hamden, Gloucester, gent., for certain improvements in looms, and in the manufacture of woven and twisted fabrics. October 15; six months. David Christie, of St. John's-place, Broughtonlane, in the Borough of Salford, Lancaster, merchant, for welding and uniting cast iron with steel and malleable iron. (Communication.) October 19; six months. George Park Macindoe, residing at Mountblow, in the parish of Old Kilpatrick, and county of Dumbarton, for certain improvements in machinery or apparatus applicable to the preparation, spiuning, and doubling or twisting of cotton, wool, silk, flax, and other fibrous substances. Oct. 19; six months. Joseph Stovel, of Suffolk-place, Pall-mall East, Middlesex, tailor, for improvements in coats, parts of which improvements are applicable to sleeves of other garments. October 19; six months. Frederick William Norton, of Lascelles-hall, Lepton, in the parish of Kirkeaton, York, fancy cloth manufacturer, for improvements in manuOctober 19; facturing plain and figured fabrics. six months. John Combe, of Leeds, York, civil engineer, for improvements in machinery for heckling, carding, winding, dressing, and weaving flax, cotton, silk, October 22; six and other fibrous substances. months. SEPTEMBER, TO THE 20TH OF NOVEMBER. John Holland, of Larkhall rise, Clapham, Surrey, gent., for a new mode of making steel. (Communication. October 6; six months. No English Patents Sealed this Week. WEEKLY LIST OF DESIGNS FOR ARTICLES OF UTILITY REGISTERED. William Bridges Adams, Fan field Works, Bow William and Richard Subjects of Design. Part of a railway wagon. Domestic filter. Manchester............ ............ Power driving motion for a Joseph Harrison......... Blackburn.............................. Heddle apparatus for looms. Brothers............... Clement's-court, Wood-street, Cheapside. James Rogers............. Yately, Hants................... 2068 24 2069 G. Erby.................... Oxford-street. Stretcher and rib joint for 2071 John Harrop............... Sheffield, builder..................... Inodorous commode pan. Joseph Deeley, of the London and Newport Iron Works, RESPECTFULLY recommends to the notice of the Public his Patent Foundry Furnace, which has been effectually tested and is now in constant use at the above works, where it may be inspected by all persons interested. This Furnace operates without the aid of any motive power to impel the air. An immense saving is the consequence, both in erecting and working. One-third of the coke usually required is more than sufficient; a loss of only twenty-two pounds to the ton being sustained in smelting. The Iron melted in this Furnace also undergoes an extraordinary improvement in quality.-Scotch Pig and Scrap being returned equal to the best cold blast in point of strength, and capable of being chipped or filed with the greatest facility. Foundries using the Furnace may exist in the most densely populated cities, without causing the least nuisance, all smoke, dust, and noise being entirely avoided. The Foreign Patent Rights of the above are for disposal, affording Capitalists the most favourable opportunity for profitable investment.-Apply to the Patentee as above. Lloyd's Patent Fan Blower. 'THE HE attention of FOUNDERS, ENGINEERS, GAS COMPANIES, MANUFACTURERS, &c., is respectfully directed to the PATENT FAN BLOWER, as being the best Machine hitherto introduced for Blowing, Exhausting, or giving motion to aeriform fluids, at either high or low pressures. It will do the same amount of work as the ordinary Fan Blower, with half, and in some cases as little as one-third of the power, and when at its highest speed is wholly unaccompanied by the disagreeable humming noise which invariably attends the common Machine. Further particulars may be obtained on application, (by letter, or otherwise), to GEORGE LLOYD, 70, Great Guildford-street, Southwark. To Engineers, Machinists, and others.-Plant Machinery and Tools; and also the Lease of the Factory, by Messrs. TOPPIN, HURFORD, and Co. (successors to Mr. W. W. Simpson), on the premises at Charlton, near Woolwich, on WEDNESDAY, October 31, at 11 o'Clock, by order of the Mortgagees, FOURTEEN TURNING LATHES, a 5-horse power non-condensing patent rotary steam-engine, a 6feet lathe wheel by "Holtzapffel," 3 hydraulic presses, drilling, chopping, and punching machines, portable forges, wrought-iron windlass, heading press, vices, new files, turning and drilling tools, grindstone, benches, scales, steel bars, riveting wire, ladders, trucks, anvils, force pumps, stoves, packing-cases, iron safe, dial, office fittings, old iron, and other effects.-May be viewed two days preceding the day of sale, and catalogues had of Messrs. Sewell and Fox, solicitors, 51, Old Broad-street; on the premises; and of the auctioneers, 13, Bucklersbury, London. IT GUTTA PERCHA. cannot now be doubted even by the most sceptical, but that GUTTA PERCHA must henceforward be regarded as one of the blessings of a gracious Providence, inasmuch as it affords a sure and certain protection from cold and damp leet, and thus tends to protect the body from disease and premature death. Gutta Percha Soles keep the feet WARM IN COLD, AND DRY IN WET WEATHER. They are much more durable than leather and also cheaper. These soles may be steeped for MONTHS TOGETHER in cold water, and when taken out will be found as firm and dry as when first put in. Gutta Percha Tubing, Being so extraordinary a conductor of sound, is used as speaking tubes in mines, manufactories, hotels, warehouses, &c. This tubing may also be applied in Churches and Chapels, for the purpose of enabling deaf persons to listen to the sermon, &c. For conveying messages from one room to another, or from the mast-head to the deck of a vessel, it is invaluable. For greater distances the newly-invented ElectricTelegraph Wire covered with Gutta Percha is strongly recommended. Mill Bands. The increasing demand for the Gutta Percha strapping for driving bands, lathe-straps, &c., fully justifies the strong recommendations they have everywhere received. Gutta Percha Pump Buckets, Clacks, &c. Few applications of Gutta Percha appear likely to be of such extensive use to manufacturers, engineers, &c., as the substitution of it for leather in pump buckets, valves, &c. These buckets can be had of any size or thickness WITHOUT SEAM or JOINT, and as cold water will never soften them, they seldom need any repair. Gutta Percha Picture Frames. The Gutta Percha Company having supplied HER MAJESTY THE QUEEN with several elaborate Gutta Percha Picture Frames for Buckingham Palace, which have been highly approved by the Royal Family, fully anticipate a great demand for frames from the nobility throughout the country. In order that the picture-frame makers may not be injured, the Company will supply the trade with the mouldings, corner and centre pieces, &c., and allow them to MAKE UP the frames. Pattern books for the trade are now ready. Gutta Percha soles, solution, inkstands, card-trays, medallions, picture-frames, brackets, mouldings, window-blind cord, soap-dishes, tap-ferrules, cornices, vases, fire-buckets, bowls, pen-trays, stethoscopes, thin lining, thread, flower-pots, ear-trumpets, &c., &c., manufactured at the Company's Works, Wharfroad, City-road, London; and sold by their Wholesale dealers in town or country. To Inventors and Patentees. MESSRS. ROBERTSON & CO., PATENT SOLICITORS, 166, Fleet-street, London; and 99B, New-street Birmingham. (Of which firm Mr. J. C. ROBERTSON, the EDITOR of the MECHANICS' MAGAZINE from its commencement in 1823, is principal partner,) undertake The procuration of Patents For England, Scotland, Ireland, and all Foreign Countries, and the transaction generally of all business relating to PATENTS. Specifications Drawn or Revised. DISCLAIMERS, AND MEMORANDUMS OF ALTERATION PREPARED AND ENROLLED. Caveats Entered and Oppositions Conducted. CONFIRMATIONS AND PROLONGATIONS Searches made for Patents, and Copies or Advice on Cases submitted, &c. &c. INTENDING PATENTEES supplied gratis with Printed Instructions, on Application, either personally or by letter. AGENTS: For Manchester, Messrs. Wise and Wood, 3, Cooper-street. For New York, Mr. Thomas Prosser, 11, Platt-street. Advantages of Registering Designs for Articles of Utility. Under the New Designs Act, 6 and 7 Vic. c. 65. Protection for the whole of the three Kingdoms by one Act of Registration. Protection for a term of three years. Protection at a moderate expense (from 121. to 204.) Protection immediate, (may be obtained in most cases within a couple of days.) Power of granting licenses for any of the three Kingdoms, or any of the cities, towns, or districts thereof, to one, two, three, or any greater number of persons. Summary remedy for Infringements. For a copy of the Act, with Table of Fees, and Explanatory Remarks, see Mechanics' Magazine, No. 1047, price 3d.; and for Lists of Articles registered under the New Act, see the subsequent Monthly Parts. Specifications and Drawings, according to the Provisions of the Act, prepared, and Registrations effected without requiring the personal attendance of parties in London, by Messrs. ROBERTSON and Co., Patent and Designs Registration Agents, 166. Fleet-street, and 990, New street, Birmingham; or by their Manchester Agents, Messrs. Wise and Wood, 3, Cooper-street. Ornamental Designs also registered under the 5 and 6 Vic., c. 100. To Engineers and Boiler Central Patent Agency Office, IT Brussels. has long been the opinion of many Scientific Men, Inventors and Manufacturers, that it would be of the greatest utility to establish in some central part of Europe, a Consulting Agency Office, directed by an experienced Engineer, who might assist Inventors by his experience and advice, to procure Patents (Brevets) and prepare the requisite papers, and to promote generally the interests of his clients. Influenced by this prevailing feeling on the subject, M. JOB DIXON, consulting Engineer, Knight of the Netherlands Lion, &c., has, at the solicitation of numerous scientific friends in England and the Continent, opened a Patent Agency Office at Brussels, Rue d'Artifice, 84, bis, Boulevard de Waterloo, Where orders will be received for the Procuration of Patents of Invention for the various States of Europe, and the United States of America; and where Mr. DIXON may be personally advised with on all matters relating to the Securing of Patents for Inventions or to the working of the same. Persons favouring Mr. DIXON with their commands, may rely on the most judicious care, confidence, and dispatch. N.B. All letters or packages to be addressed postpaid. Advertisements................. 406 407 LONDON: Edited, Printed, aud Published, by Joseph Clinton Robertson. of No. 166, Fleetstreet, in the city of London, and 998, Newstreet, Birmingham.-Sold by A. and W. Galignani, Rue Vivienne, Paris; Machin and Co., Dublin; W. C. Campbell and Co., Hamburgh. |