Improvements in and connected with Hauling Engines.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in and connected with Hauling Engines.
I, PHILIP HOWARD, of Auckland House, Corporation Road, Newport-on-Usk,
in the County of Monmouthshire, Mechanical Engineer, do hereby declare the
nature of this invention to be as follows:
My invention relates to the application, or addition of an independent shaft and
pinion wheel, driven from the spur wheel on the drum shaft of hauling engines
in the same direction, and at the same speed as the engine crank shaft, for driving
the valve motion of the engines thereby bringing the width and size of engines to
a minimum also being much easier for repairs and practically free from being
damaged, these being the chief points required in underground hauling engines,
and superseding the existing arrangements of working the valve gear from the
engine crank shaft, or with a drag link from crank pin.
The smaller size engines with cylinders up to about eight inches diameter will be
generally made portable and may be run into the collieries or mines with a train
of trams, their size being limited to that of a loaded tram, thereby dispensing with
the use of horses to a very great extent.
Engines with ordinary valve gears worked from the crank shaft cannot be made
narrow enough for these requirements.
Improvements in and connected with Hauling Engines.
I, PHILIP HOWARD, of Auckland House, Corporation Road, Newport-on-Usk,
in the County of Monmouth, Mechanical 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:-
66
My invention relates to the application or addition of an independent shaft and
pinion wheel
A" driven from the spur wheel on the drum of hauling engines in the
same direction and at the same speed as the engine crank shaft for driving the valve
motion of the engines, thereby bringing the width and size of engines to a
minimum, also being much easier for repairs and practically free from being
damaged, these being the chief points required in underground hauling engines
and superseding the existing arrangements of working the valve gear from the
engine crank shaft or with a drag link from crank pin. The smaller size engines
with cylinders up to about eight inches diameter will be generally made portable
and may be run in to the collieries or mines with a train of trams, their size being
DR71

page_text: limited to about that of a loaded tram, thereby dispensing with the use of horses to
a great extent. Engines with ordinary valve gears worked from the crank shaft
cannot be made narrow enough for these requirements.
I append a drawing in order that my invention may be clearly understood.
Having now particularly described the nature of my invention, and in what
manner the same is to be performed, I declare that what I claim is :-
The application or addition of an independent shaft and pinion wheel driven
from the spur wheel on the drum shaft of hauling engines, in the same direction
and at the same speed as the engine crank shaft for driving the valve motion of the
engines.
Dated this 22nd day of January 1898
PHILIP HOWARD.