ESTABLISHED 1844. JOSEPH C. TODD,

(Formerly of Todd & Rafferty), ENGINEER and MACHINIST. Flax, Hemp,

Jute, Rope, Oakum, and Bagging Machinery, Steam Engines, Boilers, etc.

Also Agent for the celebrated and improved Rawson & Rittinger Hoisting

Engine, I will furnish specifications and estimates for all kinds of

machinery. Send for descriptive circular and price. Address

J.C. TODD,

10 Barclay St., New York, or Paterson, N.J.

* * * * *

[Illustration:

PATENT

COLD ROLLED

SHAFTING.

]

The fact that this shafting has 75 per cent. greater strength, a finer

finish, and is truer to gauge, than any other in use, renders it

undoubtedly the most economical We are also the sole manufacturers of

the CELEBRATED COLLINS' PAT. COUPLING, and furnish Pulleys, Hangers,

etc., of the most approved styles. Price list mailed on application to

JONES & LAUGHLINS,

Try Street, 2d and 3rd Avenues, Pittsburgh, Pa.

190 S. Canal Street, Chicago, Ill., and Milwaukie, Wis.

Stocks of this shafting in store and for sale by FULLER. DANA, & FITZ,

Boston, Mass. GEO. PLACE & CO. 121 Chambers St., N.Y.

* * * * *

A Cyclopedia of Mechanics and Engineering,

FOR SALE. The few copies of the Author's Extra Edition of Prof. R.H.

Thurston's Report on Machinery and Manufactures at the Great

International Exhibition, 1873, with an account of European

manufacturing districts.

The volume contains over 450 pages, and contains 223 wood-cuts and

plates.

Please send orders for copies at once. Price, $4.00.

F.T. THURSTON,

Civil and Mechanical Engineer.

HOBOKEN, N.J.

* * * * *

Scientific American, Volume XXXVI., No. 8, February 24, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. · 第 178 / 203 题