IMPROVEMENTS IN PORTABLE FORGES
Year: 1884

page_text: "
I, HENRY MOSER of 178 High Street Southwark in the County of Surrey,
Metal Merchant and Tool Manufacturer do hereby declare the nature of my
invention for "IMPROVEMENTS IN PORTABLE FORGES and in what manner
the same is to be performed to be particularly described and ascertained in and
by the following statement :-
This Invention relates to portable forges and especially to the fan and blowing
apparatus of the same.
The fan consists of a wheel enclosed in a cast iron case which is eccentric to the
axis of the wheel. The wheel is composed of three discs a central disc fixed upon
the axis and other discs of larger diameter one on either side of the central disc.
The outer discs each have a hole in the centre for the entrance of air. "The hole"
which is smaller in diameter than the central disc corresponds to a like opening in
the side of the case. Three or other number of inclined blades serve both to
propel the air and to connect the outer discs with the central disc and with the
axis. The fan is fixed beneath the forge pan at the end away from the fire and
the blast is conveyed from the fan to the fire by means of a pipe running along
beneath the forge pan and up the back of the forge. The axis of the fan is
driven by means of a cranked handle conveniently fixed behind the forge on an
inclined axis provided at its lower end with a bevilled' wheel which gears with a
pinion on the axis of a fly wheel beneath the forge pan. The periphery of the fly
wheel is turned true and smooth and a leather covered roller on the axis of the fan-
wheel rests in contact with the exterior of the fly wheel. The axis is adjustable
by screws operating against the bearings in which it is held and so the fan wheel
is driven without either chains bands or cords.
In order that my said Invention may be most fully understood and readily
carried into effect I will proceed to describe the Drawings hereunto annexed.
Figure 1 is a side elevation of a portable forge constructed in accordance with
my Invention.
Figure 2 is a transverse vertical section of the same taken on the line A. A. in
Figure 1.
AA is a frame which is stiffened by means of diagonal tie bars, these to avoid
confusion are not represented in the Drawings.
B is the bed or trough in which the forge tire is made.
C is the wind nozzle.

page_text: D is a pipe connecting this nozzle with the fan case E. The fan axis F passes
through the fan case eccentrically, it is supported in bearings upon two cross
bars E. E¹. The cross bars E¹ span openings in the side of the case, by which the
wind enters, and passes to the wheel of the fan. E* E* are oil cups provided for
the lubrication of the fan axis.
F¹ is a small pulley upon the axis F, it is covered with leather, and the periphery
of the fly wheel G is in contact with it.
The axis of the wheel G is carried in blocks, which are adjustable upon the
frame, for the purpose of maintaining a pressure between the driving surfaces
sufficient to drive the- fan wheel when the fly wheel G is rotated without being
excessive or such as to give rise to undue friction. Screws are fixed into the
sliding blocks and they receive lock nuts H H which embrace lugs on the frame
through which the screws pass. By means of these screws and nuts the axis.can
be set to the position desired.
I is a bevilled pinion upon the axis of the fly wheel, and K is a wheel in gear
with it. The wheel K is mounted on an inclined axis L and at its upper end the
axis is provided with a crank handle by means of which it is turned for the
purpose of driving the fan.
'
The lower end of the axis L enters a recess in the bearing block for the axis of
the fly wheel.
The fan wheel consists of a disc M fixed upon the axis F, and having secured to
it the three curved blades N N N and in turn to these blades the two outer
discs OO are fixed. The discs O have openings at the centre, corresponding to
the openings in the fan case. By these openings the air enters on either side, and
by the central disc is directed outwards to the periphery. The air is propelled by
the fan blades and driven through the pipe D to the wind nozzle C.
P is a plug at the lower part of the fan case, it serves to clear the fan case from
cinders in case any should pass back into it. The aperture which receives the
plug also serves to admit of a flexible pipe being attached to the fan case, in case
for any purpose it should be desired to employ a portable wind nozzle.
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
First, The blowing apparatus consisting of a fan wheel set eccentrically in its
case, such fan wheel consisting of a central disc and two outer discs connected by
curved blades, substantially as described.
Second. The combination of driving gear by which the fan axis receives its
movement, such driving gear, consisting of an inclined axis rotated by manual
power and driving by means of bevilled gear a wheel having its periphery in
contact with a small pulley on the fan axis, the position of the axis of the said
.wheel being adjustable substantially as described.
Third. The improvements in portable forges substantially as herein described
and represented by the annexed Drawings.
Dated this 25th day of January 1884.
CARPMAEL & Co.,
Agents for the Applicant.