r with a fall of 3 meters.
One 15 ton hammer with a fall of 3 meters.
Two 10 ton hammers with a fall of 2 1/2 meters.
One 8 ton hammer with a fall of 2 1/2 meters.

As the 100 ton hammer at these works is the largest in the world, some
particulars concerning it will be appropriate.

The foundations are composed of a mass of masonry laid in cement
resting on bed rock, which occurs at a depth of 11 meters, an anvil
block of cast iron, and a filling-in of oak timber designed to
diminish by its elasticity the vibrations resulting from the blows of
the hammer. The masonry foundation presents a cube of 600 meters.
Its upper surface is covered with a layer of oak about one meter in
thickness, placed horizontally, on which rests the anvil block.

At the Perm foundry in Russia the anvil block for the 50 ton hammer
is made in one piece, moulded and cast on the spot it was intended to
occupy. Its weight is 622 tons. At Le Creusot, however, this idea
was not approved, and it was determined to construct the block in six
horizontal courses, each bedded upon plane surfaces. Each course is
formed of two castings, except the upper one, a single block, which
weighs 120 tons and supports the anvil. Thus formed in 11 pieces, it
is 5.6 meters high, 33 square meters at the base, and 7 square meters
at the top. Its entire weight is 720 tons.

The space between the block and the sides of the masonry in which it
rests is filled in solidly with oak. The block is thus independent of
the frame of the superstructure.

The legs of the frame, inclining toward each other in the form of an
A, are secured at their bases to a foundation plate embedded in the
masonry. They are hollow, of cast iron, and of rectangular cross
section, each leg in two pieces joined midway of their length by
flanges and bolts. The legs are also bound together by four plates of
wrought iron, which, at the same time, holds the guides. The height of
the legs is 10.25 meters, and their weight, with the guides, 250 tons.
The binding plates weigh together about 25 tons, and the foundation
plates 90 tons.

The entablature of the frame work weighs 30 tons; on it is placed the
steam cylinder, single acting, made in two pieces, each 3 meters
long united by flanges and bolts. The diameter of the cylinder is 1.9
meters, giving a surface of 27,345 square centimeters (deducting the
section of the rod, which is 36 centimeters in diameter); which, for
5 atmospheres, gives a pres