IMPROVEMENTS IN LOCOMOTIVE ENGINES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I GEORGE THOMPSON DICKINSON of 17 Lily Avenue in the City and County
of Newcastle upon Tyne do hereby declare the nature of my invention for
IMPROVEMENTS IN LOCOMOTIVE ENGINES to be as follows:―
Placing the Cylinders between the front pair of driving wheels and the back pair
of driving wheels the pistons to have piston rods passing out at both ends of the
Cylinders.
The further ends of the pistons-rods are fixed to crossheads having journals in
the centres from which the connecting rods work back to the Cranks.
26
.COMPLETE SPECIFICATION.
I GEORGE THOMPSON DICKINSON of 17 Lily Avenue in the City and County
of Newcastle upon Tyne do hereby declare the nature of said invention for
IMPROVEMENTS IN LOCOMOTIVE ENGINES" and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
My Invention consists in an arrangement whereby a better balance of the
Engine is obtained and the power is more advantageously applied in driving
locomotive Engines than is the case with such Engines as hitherto arranged-
According to my said Invention I place the motive power cylinder or cylinders
between the front or forward driving wheels and the back or rearward driving
wheels and I make the pistons of such cylinders with double piston rods one
projecting from one end of the cylinder or cylinders and connected with a crank of

page_text: the forward pair of driving wheels and the other of the said piston rods projecting
from the other end of the said cylinder or cylinders being connected with a crank
of the rearward pair of driving wheels.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same reference being had to the
accompanying drawing, which represents in elevation so much of a locomotive
engine as suffices to illustrate the application of my Invention thereto.
Each motive power cylinder A is provided with a piston having a piston rod bb³
on each side passing out at the respective ends of the cylinder-The piston rod b is
connected to the crank axle c of the forward driving wheels C, and the piston
rod 6 is connected to the crank-axle d of the rearward driving wheels D-This
connection may be effected in any suitable way-In the example shewn in the
drawings the piston rods are extended by the arms bª provided at the outer ends
with cross heads e sliding in guides and connected by rods g to the cranks of the
axles-There may of course be one two or any desired number of steam cylinders
arranged as described to act upon any number of cranks there may be on the
driving wheel axles.
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.
1 For driving locomotive Engines a motive power cylinder or motive power
cylinders situated between the axles of the front or forward driving wheels and
the back or rearward driving wheels the said cylinder or cylinders each having a
piston with a rod projecting from both the forward and the rear ends of the said
cylinder or cylinders and connected respectively to the crank or cranks of the front
or forward driving wheel axle and the back or rearward driving wheel axle
substantially as hereinbefore described.
2nd-For-driving-Locomotive--Engines-a-motive--power-cylinder-or motive-power
cylinders situated between the axles of the front or forward driving whoels and the
back or rearward driving wheels the said cylinder or cylinders each having a piston
with a rod projecting from both the forward and the rear ends of the said cylinder
and connected respectively to the crank or cranks of the front or forward driving
wheel axle and of the back or rearward driving wheel axle by means of extensions
of the said piston rods beyond the cranks and connecting rods led back to the
cranks substantially as herein before described and illustrated in the accompanying
drawings.
Dated this 8th day of October 1884.