IMPROVEMENTS IN AND CONNECTED WITH BLOWING FANS
Year: 1876

page_text: LETTERS PATENT to Philip Pierce, of Wexford, Ireland, Engineer, for the
Invention of IMPROVEMENTS IN AND CONNECTED WITH BLOWING FANS."
"
PROVISIONAL SPECIFICATION left by the said Philip Pierce at the Office
of the Commissioners of Patents on the 30th October 1876.
PHILIP PIERCE, of Wexford, Ireland, Engineer.
NECTED WITH BLOWING FANS."
"IMPROVEMENTS IN AND CON-
According to this Invention the cast-iron sides of the chamber or body of the fan
are constructed so as to form the nozzle and chamber of a circular section. The
sides are provided with uprights or standards terminating in bosses, which serve as
journals or bearings for the shaft of the driving pulley, from which latter motion is
communicated to a small pulley on the fan blade spindle by means of belt or gut.
The cast-iron or other pipe leading from the fan outlet or nozzle terminates in a
box or well placed under the fire-place or hearth and provided with a movable per-
forated cover, which may be hinged thereto; the object of this movable cover is
to allow the blast to pass freely through the perforations, and at the same time to
permit the well or box to be cleared of the ashes when required.
This arrangement is specially suitable for fires which are lighted on the floor or
bearth, but is also applicable to grate fires.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Philip Pierce in the Great Seal Patent Office on the 30th April 1877.
"IMPROVEMENTS IN AND CON-
PHILIP PIERCE, of Wexford, Ireland, Engineer.
NECTED WITH BLOWING FANS."
According to this Invention the cast-iron sides of the chamber or body of the fan
are constructed so as to form the nozzle and chamber of a circular section. The
sides are provided with uprights or standards terminating in bosses which serve as

page_text: journals or bearings for the shaft of the driving pulley, from which latter motion is
communicated to a small pulley on the fan blade spindle by means of belt or gut.
The cast-iron or other pipe leading from the fan outlet or nozzle terminates in a
box or well placed under the fire-place or hearth and provided with a movable per-
forated cover, which may be hinged thereto; the object of this movable cover is to
allow the blast to pass freely through the perforations, and at the same time to
permit the well or box to be cleared of the ashes when required.
This arrangement is specially suitable for fires which are lighted on the floor or
hearth, but is also applicable to grate fires.
And in order that this my Invention may be more completely understood I will
now describe the same with reference to the accompanying Sheet of Drawings, of
which Figure 1 is an end elevation partly in section of the fan constructed
according to this Invention; and Figure 2, a side elevation of the fan and the
outlet pipe leading therefrom to the hearth or other fire. Figure 3 is a plan of the
cover for the terminating box on the outlet pipe; and Figure 4 is a perspective
view of the fan.
A, A, are the two sides forming the fan case and made of a circular section, as
shown in section at Figure 1; they are bolted together by flanges and bolts, and
are here shown cast in one with brackets or standards B, B, which terminate in
bosses C, C, forming together in this case one journal (or they might form two) for
the spindle D of the driving pulley E, which by strap communicates motion to the
pulley F on the fan blade spindle. Instead of a spindle the boss or bosses may
obviously serve to carry a stud for the driving pulley E to revolve loosely on.
air enters through the two openings near the centre of the fan, and is by the
circular fan blades G forced into the outlet pipe H in the usual manner; the
pipe H terminates in a box I fitted with a perforated or grated cover K, which may
be hinged or not.
The
And having thus fully described the nature of this Invention, I declare that I
claim,―
Forming the sides of a blowing far case of a circular section," and with standards
or uprights, with bosses for a bearing or bearings for the shaft of the driving pulley
or for carrying a stud for the driving pulley to run on as set forth.
Also fitting the box or well which terminates the outlet pipe with a hinged or
movable perforated cover for facilitating the removal of ashes as set forth.
In witness whereof, I, the said Philip Pierce, have hereunto set my hand and
seal, this Twentieth day of April, in the year of our Lord One thousand
eight hundred and seventy-seven.
PHILIP PIERCE. (L.S.)