Improvements in Portable and other Forges.
Year: 1896

page_text: Improvements in Portable and other Forges.
We, WILLIAM ALLDAY, of Springfield Moseley, in the County of Worcester,
Manufacturer, and EDMUND ALLDAY of Spring Coppice, Knowle, in the County
of Warwick, Manufacturer, do hereby declare the nature of this invention to bo
as follows:-
Our invention has reference to the means of driving the blowers or fans of
portable and other forges; and consists of the improvements hereinafter described
in the said blower or fan driving mechanism whereby the workman may without
unduly exerting himself obtain a sufficiently rapid rotation of the axis of the blower
or fan to maintain the requisite blast.
In order that our invention may be the better understood we remark that ordinarily
the axis of the blower or fan is driven by a winch or handle fixed directly on the
said axis and in order to obtain the necessary blast the winch or handle has to be
rapidly turned much to the discomfort and fatigue of the workman.
In carrying our invention into effect we arrange the driving axis near the front
of the forge and mount thereon a driving chain wheel provided with a winch or
handle and on the axis or shaft of the blower or fan and in the same vertical plane
as the driving chain wheel we fix a second chain wheel the diameter of the driving
chain wheel having a ratio to the diameter of the second or driven chain wheel
preferably of three to one. We do not however limit ourselves to any ratio
between the two wheels. The two chain wheels are geared together by an endless
driving chain. By chain wheels and driving chain we mean wheels and chain of
the kind commonly used in the driving of bicycles and other velocipedes.
The axis of the driving chain wheel is provided with means of adjustment for
taking up slack or wear of the chain.
The driving mechanism may be arranged on the outside of the casing or be
enclosed within the casing.
Instead of employing a chain and chain wheels, toothed or spur wheels may be
mounted on the driving wheel axis and on the axis of the blower or fan, an
intermediate toothed wheel or wheels being employed to communicate the motion
of the driving wheel to the driven wheel on the shaft or axis of the blower
or fan. The driving motion may also be obtained by means of a worm and
pinion.
Dated this Eighth day of February 1896.
W. T. WHITEMAN,
Agent for the Applicants.

page_text: Improvements in Portable and other Forges.
We, WILLIAM ALLDAY, of Springfield Moseley, in the County of Worcester,
Manufacturer and EDMUND ALLDAY, of Spring Coppice, Knowle, in the County
of Warwick Manufacturer do hereby declare the nature of our invention and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
Our invention has reference to the means of driving the blowers or fans of
portable and other forges; and consists of the improvements hereinafter described
in the said blower or fan driving mechanism, whereby the workman may without
unduly exerting himself obtain a sufficiently rapid rotation of the axis of the blower
or fau to maintain the requisite blast.
In order that our invention may be the better understood we remark that
ordinarily the axis of the blower or fan is driven by a winch or handle fixed
directly on the said axis and in order to obtain the necessary blast the winch
or handle has to be rapidly turned much to the discomfort and fatigue of the
workman.
In carrying our invention into effect we arrange the driving axis near the
front of the forge and mount thereon a driving chain wheel provided with a
winch or handle and on the axis or shaft of the blower or fan and in the same
vertical plane as the driving chain wheel, we fix a second chain wheel the
diameter of the driving chain wheel having a ratio to the diameter of the second
or driven chain wheel preferably of three to one. We do not however limit
ourselves to any ratio between the two wheels. The two chain wheels are geared
together by an endless driving chain. By chain wheels and driving chain we
mean wheels and chain of the kind commonly used in the driving of bicycles and
other velocipedes.
The axis of the driving chain wheel is provided with means of adjustment, for
taking up slack or wear of the chain.
The driving mechanism may be arranged on the outside of the casing or be
enclosed within the casing.
Instead of employing a chain and chain wheels, toothed or spur wheels may
be mounted on the driving wheel axis and on the axis of the blower or fan,
an intermediate toothed wheel or wheels being employed to communicate the
motion of the driving wheel to the driven wheel on the shaft or axis of the blower
or fan. The driving motion may also be obtained by means of a worm aud
pinion.
Figure 1 of the accompanying drawings represents in side elevation, and
Figure 2 in plan, a portable forge the blower (or fan) of which is driven by
mechanism constructed according to one of the arrangements constituting our
invention.
The same letters indicate the same parts in both figures.
a is the hand worked chain wheel at the front of the forge and external to the
casing of the forge. The said driving chain wheel a turns loosely on the axis b
and is capable of adjustment. The said driving chain wheel is provided with the
winch or handle c for turning it; d is the axis of the blower (or fan) on which is
fixed a second smaller chain wheel e in the same vertical plane as the chain
wheel a. The two chain wheels a and e are geared together by the endless driving
chain g preferably of the kind used in chain driven velocipedes. The axis on
which the chain wheel a turns is capable of adjustment for taking up slack or
wear of the chain g.
By turning the chain wheel a by the handle or winch c, a rapid rotary motion is

page_text: communicated through the said chain wheel a, chain g and chain wheel e to
the axis of the blower (or fan) for maintaining the requisite blast in the forge.
Figure 3 represents in side elevation and Figure 4 in plan a portable forge
in which the blower or fan driving mechanism Figures 1 and 2 is enclosed within
the casing of the forge instead of being situated external to the said casing. The
parts of the driving mechanism Figures 3 and 4 are marked with the same letters.
of reference as corresponding parts in Figures 1 and 2.
In the cased arrangement Figures 3 and 4 the handle or winch of the larger
driving chain wheel projects from a hole in the casing of the forge.
Figure 5 represents in side elevation, partly broken away, and Figure 6 in plan,
a portable forge in which the blower or fan is driven by worm and pinion, or worm
wheel driving mechanism enclosed within the casing of the forge. In this
arrangement the axis of the blower f (or fan) is prolonged and made into the
worm with which the worm wheel or pinion i gears. The axis of the worm
wheel i turns in bearings within the casing of the forge and the said axis carries
on its end and external to the forge casing, the winch or handle k by which the
said worm wheel is turned. The rotation of the worm wheel i by the handle or
winch k communicates a quick rotation, through the worm h and worm axis to the
axis of the blower or fan.
Figure 7 represents in side elevation and Figure 8 in plan a portable forge
containing blower or fan driving mechanism consisting of spur or toothed wheels
enclosed within the casing of the forge.
7 is the driving spur wheel provided with interual teeth and turned by the
winch m fixed on its axis, the said winch being situated external to the casing of
the forge. On the axis of the blower pis a spur pinion q which gears with the
internal spur wheel l. By rotating the internal spur wheel by its winch m, a
rapid rotation is communicated through the pinion q to the blower or fan axis and
the required blast maintained in the forge.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that we
claim as our invention ;-
First. Driving the blowers or fans of portable and other forges by means of
chain wheel mechanism arranged and worked substantially as described and
illustrated, whether the said chain wheel mechanism be situated external to or
enclosed within the casing of the forge as described and illustrated in Figures 1, 2, 3
and 4 of the accompanying drawings.
Secondly. Driving the blowers or fans of portable and other forges by means
of worm and worm wheel mechanism enclosed within the casing of the forge
substantially as herein before described and illustrated in Figures 5 and 6 of the
accompanying drawings.
Thirdly. Driving the blowers or fans of portable and other forges by means of
toothed or spur gearing mechanism enclosed within the casing of the forge
substantially as herein before described and illustrated in Figures 7 and 8 of the
accompanying drawings.
Dated the Nineteenth day of October 1896.
WILLIAM ALLDAY.
EDMUND ALLDAY.