Improvements in Steam and other Engines.
Year: 1895

page_text: Date of Application, 24th Dec., 1895-Accepted, 1st Feb., 1896
Improvements in Steam and other Engines.
I, CHARLES SHEPPARD, of the New Foundry, Bridgend, in the County of
Glamorgan, Engineer, 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 :-
My invention chiefly relates to a hauling engine designed to be worked by either
compressed air or steam but a part of my improvements is also applicable to other
engines.
-
In the accompanying drawing,
•
Figure 1 is a side elevation of a hauling engine constructed according to imy
invention:
Figure 2 is a plan, and,
Figure 3 is a front end elevation of the same :
Figure 4 is a plan of part of the frame with the crauk shaft, eccentric shaft and
their gearing, and,
Figure 5 is an elevation of the said gearing.
n
The hauling engine is constructed of a cast or wrought iron framing A between
the side plates of which at one end are bolted three cylinders B, each fitted with a
trunk piston C and connecting rod D coupled to and giving motion to a 3-throw
crank shaft E. Steam is admitted to each cylinder by a separate slide-valve
actuated by an eccentric F keyed to a shaft G or turned out of the solid shaft.
On this shaft a stop-block A' is also keyed and a spur-wheel H is loosely mounted,
such spur wheel engaging with a solid spur-wheel I of equal diameter keyed to the
crank shaft E. The loose spur wheel H on the eccentric shaft G is provided with
two pins P, P which engage the stop block A' thereby transmitting the motion of
the crank shaft to the eccentric shaft. Either of these pins can be used according
to the direction in which the engine is to run. To reverse the engine the
stop-block A' is rotated by means of a hand wheel J so as to be actuated by
the other pin, the movement of the block shifting the relative positions of the
slide valves. By this means I dispense with the necessity of using link or other
forms of reversing motion, and the reversing of the engine is effected by means of
only one eccentric for each slide valve.
I wish it understood that I do not confine the above improvement to use with a
hauling engine as it can be applied with equal advantage to other engines.
The hauling mechanism consists of one or two drums B' keyed or loose on the
shaft K engaging (if loose) with clutches L, L so that either or both of the drums
can receive motion from the engine. The clutches are made to slide on feathers,
fitted into the shaft K and are actuated by hand levers M, M. Each drum is provided
with a strong brake ring bolted or cast on to the drum cheeks C' and provided
with a powerful brake strap D' and a lever N actuated by pressure from a
foot lever 0. The engine can be mounted on wheels so as to be portable if
required.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
°
1. In a hauling or other engine the arrangement and combination of the engine
crank shaft and eccentric shaft, the latter being driven by means of two spur

page_text: wheels of equal diameter, one fixed to the crank shaft and one loose on the
eccentric shaft, the loose wheel carrying two pins which engage with a stop block
keyed to the eccentric shaft substantially as, and for the purposes, hereinbefore
described and as illustrated in the accompanying drawings.
2. In a hauling engine the arrangement of clutch and brake levers substantially
as herein before described and illustrated in the accompanying drawings.
3. In a hauling engine the herein described arrangement of three cylinders fixed
between the side plates of the engine.
Dated the 24th day of December 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.