IMPROVEMENTS IN APPARATUS FOR LIFTING AND LOWERING THE CHIMNEYS OF PORTABLE AND OTHER ENGINES
Year: 1884

page_text: I HENRY VAUGHAN of The Avenue Lincoln in the County of Lincoln Engineer
do hereby declare the nature of my Invention for "IMPROVEMENTS IN APPARATUS
FOR LIFTING AND LOWERING THE CHIMNEYS OF PORTABLE AND OTHER ENGINES"
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:—
The chimney of the ordinary portable engine is very awkward by reason of its
weight to lift from the horizontal position in which it is placed for travelling,
to the vertical position required for work and is still more difficult to lower
especially when hot.
The different forms of apparatus hitherto invented for this purpose are
complicated and tend to strain the chimney; by this Invention both operations
are accomplished in the following manner.
A long rod or lever is attached by a joint to the back of the chimney preferably
to its upper portion. The rod extends backwards from the chimney and is made
to drop into a deep notch or pass through a slot formed in the chimney crutch or
stand, at the bottom of which notch or slot there may be a friction roller for the
rod to rest on. A suitable handle is also formed on the outer end of the rod.
When the chimney is down the rod takes a horizontal position approximately
parallel to it and when the chimney is up the rod inclines downwards to the back
of the engine and may be made to form an efficient stay to the chimney.
To raise the chimney the handle is pulled downward and pushed forwards.
The rod then forms a powerful lever the fulcrum of which is at the point where
the rod rests within the notch or slot below the crutch.
In this way sufficient leverage is easily obtained to commence the lifting up
of the chimney and as the chimney is lifted and the leverage required gets
gradually less and less the leverage decreases and the completion of the lifting
of the chimney is effected by the forward thrust upon the rod.
To lower the chimney the proceeding is reversed.
The chimney may be held upright by locking the lower part of the rod to the
chimney crutch or stand in any suitable manner. For convenience of travelling
the rod or lever may be in two pieces united by a socket or like device so that
the outer end may be easily detached or the joint at the chimney end may be
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page_text: -
so formed that the rod may readily be detached from the chimney when the
chimney is down--and can then be pushed forward underneath the chimney so as
to be out of the way.
In the accompanying Drawing I have shewn the Invention applied to a portable
engine of the ordinary type but it might be applied to engines of other form or to
vertical or traction engines.
Figure 1 is a side view and Figure 2 an end view of the engine.
A is the chimney hinged at its lower end to the base B as is usual-O is the
crutch with the slot or notch formed in it and with a friction roller D at the
bottom of the notch-E E E is the rod jointed to the chimney at H.
The joint is shewn to be formed in such a way that it can readily be
disconnected from the chimney when the chimney is down but cannot become
detached when the chimney is raised. Other ways of forming the joint than the
one shewn might be adopted as for example it might be a pin joint so that the
separation could be effected by withdrawing the pin. Or as before stated the rod
might be in two parts connected by a socket joint so that the rear end only of
the rod would have to be detached when the chimney was down.
G is the handle at the rear end of the rod. J is a screw bolt by which the rod
can be clamped to the crutch or stand C when the chimney has been raised or when
it is lying out of use below the chimney.
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed I declare that what
I claim is
:
The application to portable and other engines of a lever or rod jointed to the
chimney and also resting upon a fulcrum near the rear end of the engine for the
purpose hereinbefore named.