4. line, for each insertion, - - 6Octs. S " " " - - $1,00 12 " " " - $1,50 16 " " I I _ ' $2,00 Advertisements exceeding 16 lines cannot be admitted; neither can engravings be inserted In the advertising columns at any price. IIJ"' All advertisements must be paid for before inserting.American and Foreign Patent Agency TMPORTANT TO INVENTORS.mdash;The tmder- Xaigned having for several years been extensively engaged in procuring Letters Patent for new mechanical and chemical inventions, offertheir services to inventors upon the most reasonable terms. All business entrusted to their charge is strictly confidential. Private consultations are held with inventors at their office from 9 A. M., until 4 P. M. Inventors, however, need not incur the expense of attending in person, as the preliminaries can all be arranged by letter. Models can be sent with safety by express or any other convenient medium. They should not be over 1 foot square in size, if possible. Having Agents located in the chief cities of Europe, our facilities for obtaining Foreign Patents are unequalled. This branch of our business receives the especial attention of one ofthe members ofthe firm, who is prepared to advise with inventors and manufacturers at all times, relating to Foreign Patents. MUNN CO., Scientific American Office, 128 Fulton street, New York.TO MECHANICSmdash;A RARE CHA.NCEmdash;FOR ale or to let, a building 60x90, with a 15 horse engine, shafting and pnlleys, 5000 feet yard room, near the depot of the Kennebec and Boston R. R., in Brunswick, Me., 6 hours from Boston ; is one of the best locations in the States for building freight cars or making furniture, or any other manufacture of lumber, being in the heart of a ship-building and lumber country ; will be sold a bargain, the owner not being in circumstances to manage it. Also, the right to Woodbury's planing machine for Brunswick and Bath. Apply by letter, post-paid, or ia person, to 18 2eow* NAROESSA STONE. OURFACE CONDENSERSmdash;Having built and used ?3 at our machine shop and foundry one of J. M Miller's Surface Condensers for the last 14 months, we are now prepared to receive orders for building and putting up said condensers on either high or low pressure engines now in use, and warrant the same against expansion and contraction of the metals, also the injurious effects of oil in the tubes, which alone has caused the failure of condensers heretofore used. We have also found, in the use of our Condenser a nett saving of 30, per cent, of fuel, the water being kept pure and regular in the boiler by the condensation of the steam. In our judgment this Condenser ia the perfecting of the Steam Engine. COBB, MASON HILL, North Point Foundry and Machine Works, 18 4 Jersey City, N, J. mdash;mdash;.--------------------------------) WP. N. FITZGERALD, Counsellor at Law has recently resigned the office of principal Examiner of Patents, which he has held for many jears, and is ready to assist, professionally, in the preparation and trial of patent causes btfore the U. S. Courts in any of the States, and before the Supreme Court ofthe United States. He also acts as Counsel in cases before the Patent Office, and on appeals therefrom, but does not prepare applications for Patents Office corner of E and 8th sts., Washington, D.,C. 18 tf PREVENTING OF INCRUSTATION in Steam JL Boilersmdash;The inventor of a never-failing and extremely cheap remedy, which has been tried successfully for two year, with the most different qualities of water, offers to communicate it for the bene -fit of the public at a moderate price. Post-paid letters, enclosing $5, will receive prompt answer if directed to the undersigned, who ia prepared* to give the best of reference. A. CHELLEK. 1# box 1276, St. Louis, Mo. FLOURING AND GRIST ;MILL FOR SALEmdash; Three miles north-west from Salem, Columbia Co., Ohio ; the mill is furnished with three run of stone, driven by steam and water, both at once or, separately; there are 2 dwelling houses, orchard and ten acres of land ; the mill and jmachinery are all new and in fine running order, in an excellent section for wheat, 3 miles from the railroad. The above can be had low and on favorable terms. For further particulars address or call upon the subscriber. HODGSON KIDD. 1* FOR SALEmdash;A second-hand Locomotive Boiler 10 or 12 horse-power, with safety-valve, grate-bar, c-, in complete order ; will be sold cheap. Also, four largest size Mott'a Furnace Kettles, 150 gallons. ROBINSON "WINANT, 18 2* 105 Freeman st, Brooklyn, TORTKR'S PATENT GRADUATING VALVE JT FORGE TUYERE (illustrated in this paper Sept. 6th, 1851) is unequalled for durability and economy, and warranted to save full 25 per cent. Hundreds have recently been introduced in this city and elsewhere, all of which work like a charm. Ad-dreaa J. H. BURNETT, 308 Broadway, N. Y. 15 4* PATERT DRAFT BOARDSmdash;With extension scales, sheet fasteners, and T rule. See Reports of Worcester Fair, Maryland State Fair, c. c, with their awards. $10 complete. Sent by express. Address, post-paid, CHMBERLIN CO,, Pittseld, Mass. itf ARABE OPPORTUNITY FOR MECHANICS The advertiser is anxious to secure a good Partner, in the person of a skillful mechanic, who has a cash capital ot from $3000 to $5000, to assist in carrying on an extensive establishment in one of the most flourishing cities of the South, erected for a Planing Mill and Sash and Blind Factory. It has been but very recently put into operation, with entirely new and valuable machinery, driven by a 50 horse-power engine, atsonew. The machinery combines all of the latest improvements, and is believed to be as perfect as any ever put up at the South. The want of practical knowledge of machinery is the only motive for seeking a partner. For information apijly to MUNN CO.4 office of the Scientific American. 15 4 JD. WHITE'S PATENT CAR AXLE LATHES mdash;also Patent Engine Screw Lathee, for boring andturBig tapers, cutting; screws, c. We manufacture and keep constantly on hand the above lathes ; also double slide Chuck and common Hand Lathes, Iron Planers, S. Ingersol's Patent Universal Ratchet Drill, c. Weight of Axle Lathe, 5,500 lbs; price $600; Engine Serew Lathe, 1400 to 7,000 lbs; price $225 to $675a BROWN WHITE, 15tf Windsor Locks, Conn. WANTEDmdash;A good DYER and FINISHER of woolen goods. We are most particular about the former qualification. For further particulars address us by mail or otherwise. TEST MENDENHALL, 15 4* Richmond, Ind. STEAM ENGINES FOR SALE-We offer for sale two Engines and Boilers, as follows : one 8 horse, horizontal, cylinder 7 inches bore, 16 inch stroke, on a cast-iron bed, fly wheel, driving pulley, governor, pump, pipes, etc. ; has never been used. The Boiler has been used by the maker about one year. It is cylinder, horizontal, 16 feet long, 30 inch diameter, has a steam chamber, try-cocks, check and safety valves : price, $600. One 7 horse Horizontal Engine, 6 inch bore, 16 inch stroke, cast-iron bed-plate, driving pulley, etc. Boiler horizontal, tubular, and has everything complete for putting it in operation. The engine is new, the boiler has been used, but is in good order. Price $500. They are rare bargains, and will give satisfaction to the purchaser, being much less than new ones can be obtained. Address MUNN CO. E HARRISON'S UNEQUALLED FLOUR AND GRAIN MILLSmdash;Their frames and hopper are cast-iron, and the stones French Burr, 30 inches to four feet diameter. Thirty inch mill grinds 20 bushes an hour, weighs 1400 lbs. ; cash price $200. These mill, constructed upon a new principle, have become widely known, and are producing a revolution in milling. Cash orders promptly supplied, and the mills warranted to work in the best manner. The patentee offers $500 reward for any mill which will do an equal amount of work with the same power and dressing. Made and for sale at the corner of CourtandUnion streets, New Haven, Conn,by 13 6* El/WARD HARRISON. rpHK TROY IRON BRIDGE CO* are prepared X to erect Iron Bridges or Roofs, or any kind of bearing trusses, girders, or beams, to span one thousand feet or under, of any required strength, in any part of the country. Their bridges will be subjected to severe tests, and can be built for about the prie of good wooden ones. Address BLANCHARD FELLOWS, Troy, N. Y. 7 20* TEARDSLEE8 PATENT PLANING Tongue-J- ing and Grooving Machinesmdash;These celebrated machines have now been generally introduced in various portions of the United States. More than thirty are now in successful practical operation in the State of New Yorft alone. AB an illustration of the extent of work which they are capable of performing, with unrivalkd perfection, it is sufficient to state that, within the last six months and a half, over five millions of feet of spruce flooring have been planed, tongued and grooved by one of these machines at Plattsburgh, N. Y.. never running to exceed ten hours a day. The claim that the Beards-lee machine was an infringement upon the Wood-worth patent, has been finally abandoned ; at d after the proofs had been taken, the suit instituted by the owners of that patent was discontinued, and the whole controversy terminated on the first of November last. Applications for machines or lights may be made to the subscriber, GEO. W. BEARDSLEE, 57 State street, or No. 764 Broadway, Albany. 15tf EXHIBITION OF WORKS OF AMERICAN Industry at Washington City.mdash;The first exhibition of the Metropolitan Mechanics' Institute will be opened on Thursday, xhe 24th of February, 1853, in the new and splendid hall of the east wing ofthe Patent Office, one of the largest and most magnificent rooms in the Unitaii States, being 275 feet long by 70 feet wide. To this exhibition the manufacturers, mechanics, artists, and inventors, from all portions of the Union, are cordially invited to contribute. The hall will be opened for the reception of goods on Monday, tha 14th of February, and the exhibition will positively close on or before Thursday night, March 17. Circulars, containing detailed instructions, will be forwarded and any further information given, on application (post-paid) to the Corresponding Secretary, Charles F. Stansbury, to whom all communications on the business of the Institute should be addressed 8tf WOODBURY'S PATENT PLANING Machines mdash;I have recently improved the manufacture of my Patent Planing Machines, making them strong and easy to operate, and am now ready to sell my 24 inch Surfacing Machinesfor $700, and 14 inch Surfacing Machines for $650 each. I will warrant, by a special contract, that ONE of my aforesaid machines will plane as many boards or plattk as two of the Woodworth machines in the same time, and do it better and with less power. I also manufacture a superior Tonguing and Grooving Machine for $350, which can be either attached to the Planing Machine, or worked separately. JOSEPH P. WOOD-BURY, Patentee, Border st, EastBoston, Mass. 13tf MACHINERYmdash;8. C. HILLS, No. 12 Platt-st. N. Y. dealer in Steam Engines, Boilers, Iron Planers, Lathes, Universal Chucks, Drills; Kase's, "Von Schmidt's and other Pumps; Johnson's Shingle Machines; Woodworth's, Daniel's and Law's Planing machines; Dick's Presses, Punches and Shears; Morticing and Tennoning machines; Belting; machinery oil, Bear's patent Cob and Corn mills; Burr mill and Grindstones; Lead and Iron Pipe c. Letters to be noticed must be j?ost-jjaid. 13tf AB. ELY, Counsellor at Law, 52 Washington st., Boston, will give particular attention to Patert Cairesr ~Kfefs to. Mtt . Co., Scientific American. 16tf LEONARD'S MACHINERY DEPOT, 109 Pearl-st. and 60 Beaver, N. Y.mdash;Leather Banding Manufactory, N. Y.mdash;Machinists's Tool?, a large assortment from the "Lowell Machine Shop," and other celebrated makers. Also a general supply of mechanics' and manufacturers' articles, and a superior quality of oak-tanned Leather Belting. 7tf P. A. LEONARD. PAINTS, Ac. cmdash;American Atomic Drier Graining Colors, Anti-friction Paste, Gold Size, Zinc Drier, and Stove Polish. QUARTERMAN SON, 114 John st., ltf Painters and Chemista. LATHES FOR BROOM HANDLES, Etc.mdash;We continue to sell Alcott's Concentric Lathe,whieh is adapted to turning Windsor Chair Legs, Pillars,5' Rods and Rounds; Hoe Handles, Fork Handles and Broom Handles. This Lathe is capable of turning under two inches diameter, with only the trouble of changing the dies andpattern to the size required. It will turn smooth over swells or depressions of 3-4 to the inch ad wsrk as smoothly as on a straight linemdash;and does excellent work. Sold without frames for the low price of $25mdash;boxed and shipped with directions for setting up. Address (postpaid) MUNN CO. At this Office. F ALES GRAY (Successors to TRACV FALES), RAILROAD CAR MANUFACTURERSmdash;Grove Works, Hartford, Connecticut. Passenger, freight, and all other descriptions of railroad cars and locomotive tenders made to order promptly, ltf OHINGLES, SHINGLES, SHINGLESmdash;WOOD'S O latest improvement in Shingle Machines is becoming more generally used than any other ever invented, and is unquestionably the best machine now in use ; it produces shingles from all kinds of timber in a very perfect and rapid manner. Machines and rights for sale. Apply to JAMES D. JOHJSSON, Bridgeport, Ct. Stf CB. HUTCHINSON'S PATENT STAVE Cat- tiiag Machines, the best in use, and applicable alike to thick or thin staves ; also his Head Cuttiag and Turning, and Stave Jointing Machines. For machines or territorial rights, apply to C B. HUTCHINSON CO., Syracuse, N. Y. 9tf POSTAGE STAMPS.mdash;Post Office Stamps, ofthe denomination of 1,3, or 12 cents, may be had at par by addressing MUNN CO., Scientific American Office. NEW HAVEN MANUFACTURING COM pany, Tool .Builders, New Haven, Conn., (successors to Scranton Parshley) have now on hand $25,000 worth of Machinist's Tools, consisting of power planers, to plane from 5 to 12 feet; slidelathes from6 to 18 feet long; 3 size hand lathes, with or without shears; counter shafts, to fit all sizes asd kinds of universal chuck gear cutting engines ; drill presses, index plates, bolt cutters, and 3 size slide rests. The Co are also manufacturing steam engines; All of the above tools are of the best quality, and are for sale at 26 per cent, less than any other tools in the market. Cuts and list of prices can be had by addressing as above, post-paid. Warehouse No. li Platt St., New York, S. 0. HILLS, Agent N. H, Man'g Co. 45tf