Improved Hydraulic Blower for Forges.
Year: 1896

page_text: Date of Application, 31st Oct., 1896
Complete Specification Left, 30th July, 1897-Accepted, 2nd Oct., 1897
PROVISIONAL SPECIFICA
Improved Hydraulic Blower for Forges.
I, CAMILLE MAGNÉE of Yvoir, Belgium, Manufacturer, do hereby declare the
nature of this invention to be as follows:-
This hydraulic Forge-bellows is composed of two hollow and concentric cylinders
of the same length and closed by two common ends. The annular space, which
separates them, is divided into two chambers by a partition included in the axial
plane, on the upper part of the apparatus. Opposite the partition, the wall of the
central cylinder is pierced with a longitudinal opening allowing communication
between the annular space and the central reservoir. On each side of the partition
two valves are formed one in the outer, the other in the interior cylinder.
A rod passes through the whole apparatus, forming its axis, this rod is attached to
the apparatus and its free ends are supported in bearings. A little way above one of
these extremities, an opening is pierced in the wall of the inner cylinder. To this
opening a pipe is fitted, made of a flexible material, and terminating under the
hearth of the forge. Finally a hand-lever is fixed at a suitable point of the apparatus
preferably at a slight distance from the valves.
To work the apparatus, water is poured into it, nearly up to the level of the axis,
so as to fill about half the annular space and half the space of the central reservoir.
This being done, the operator gives an oscillatory movement to the apparatus, using
the lever for this purpose. The result is that the partition is alternately brought
together and removed from the level of the water of the annular space and that the
air comprised between these two surfaces, (partition and water) is compressed so that
it closes the outer valve while it opens the inner one and passes out into the central
reservoir, whence it escapes into the pipe and goes to feed the fire. But, having
been pressed in the central reservoir, it lowers the level of the water present therein
and causes it to rise to a certain extent in the annular space. When the movement
is reversed by a contrary action of the hand-lever the pressure of the central
reservoir gradually diminishes, the level of the water, which it contains, insensibly
rises forcing the air into the pipe.
It will thus be seen that two movements concur to ensure a continuous and
abundant supply of air, namely the increase of the volume of air in the reservoir and
its gradual compression by the water.
The apparatus is made of galvanised sheet-steel, or is cast in iron. The dimensions
vary from the smallest to the largest sizes.
The advantages of this apparatus over the ordinary one are very many. It
produces a jet of air, which may be said to be uninterrupted, or continuous, and the
effect of which is very powerful as compared with the force expended and the size of
the apparatus. Another advantage is that it heats a greater surface and it prevents
the iron from burning in the fire.
Dated this 30th day of October 1896.

page_text: I, CAMILLE MAGNÉE of Yvoir, Belgium, Manufacturer, do hereby declare the nature
of this invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
In the annexed drawing which illustrates my invention, Fig. I is a vertical section,
and Fig. II a perspective view of the Forge-bellows.
This hydraulic Forge-bellows is composed of two hollow and concentric
cylinders and C' of the same length and closed by two common ends. The
annular space which separates them, is divided into two chambers M, M¹ by a
partition p included in the axial plane, on the upper part of the apparatus. Opposite
the partition, the wall of the central cylinder is pierced with a longitudinal opening O
allowing communication between the annular space and the central reservoir A. On
each side of the partition p, two valves S1, S2 S3, S are formed-one in the outer, the
other in the interior cylinder.
A rod H passes through the whole apparatus, forming its axis, this rod is attached
to the apparatus and its free ends are supported in bearings. A little way above one
of these extremities, an opening R is pierced in the wall of the inner cylinder. To
this opening a pipe T is fitted, made of a flexible material, and terminating under
the hearth of the forge. Finally, a hand-lever L is fixed at a suitable point of the
apparatus preferably at a slight distance from the valves.
To work the apparatus, water is poured into it, nearly up to the level of the axis,
so as to fill about half the annular space and half the space of the central reservoir.
This being done, the operator gives an oscillatory movement to the apparatus, using
the lever for this purpose. The result is that the partition is alternately brought
together and removed from the level of the water of the annular space and that the
air comprised between these two surfaces (partition and water) is compressed and so
that closes the outer valve while it opens the inner one and passes out into the
central reservoir A, whence it escapes into the pipe and goes to feed the fire. But
having been pressed in the central reservoir A, it lowers the level of the water
present therein and causes it to rise to a certain extent in the annular space. When
the movement is reversed by a contrary action of the hand-lever the pressure of the
central reservoir gradually diminishes, the level of the water, which it contains,
insensibly rises forcing the air into the pipe.
It will thus be seen that two movements concur to ensure a continuous and
abundant supply of air, namely the increase of the volume of air in the reservoir and
its gradual compression by the water.
The apparatus is made of galvanised sheet-steel, or is cast in iron. The dimensions
vary from the smallest to the largest sizes.
It
The advantages of this apparatus over the ordinary one are very many.
produces a jet of air, which may be said to be uninterrupted, or continuous, and the
effect of which is very powerful as compared with the force expended and the size
of the apparatus. Another advantage is that it heats a greater surface and it
prevents the iron from burning in the fire.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
A hydraulic forge bellows, distinguished by two concentric cylinders, closed with
common ends and communicating by a lower opening, two upper valves, provided at
each side of a partition dividing the annular space between the cylinders into two

page_text: chambers communicating with the outside by two other valves, the inside cylinder
being pierced with an opening for the expulsion of the air, the annular space and the
inner cylinder being nearly half filled with water.
L. DUVINAGE,
Agent for Applicant.