IMPROVEMENTS IN STEAM ENGINES
Year: 1867

page_text: LETTERS PATENT to Clement Martin, of Hammersmith, in the County
of Middlesex, for the Invention of "IMPROVEMENTS IN STEAM ENGINES."
PROVISIONAL SPECIFICATION left by the said Clement Martin at the
Office of the Commissioners of Patents, with his Petition, on the
26th February 1867.
I, CLEMENT MARTIN, of Hammersmith, in the County of Middlesex, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
STEAM ENGINES," to be as follows:-
The Invention has for its object improvements in steam engines, and relates
to a novel combination of parts whereby great simplicity and strength are
obtained; for this purpose I connect the piston rod to the crank shaft as
usual, whilst the cylinder is also connected to the crank shaft by two con-
necting rods, there being three cranks on the crank shaft.
In carrying out this Invention the cylinder may be made to oscillate, or it
and the piston may move in a straight line towards and from the centre of the
crank shaft. Telescopic or other suitable connections may be employed for
the steam and exhaust. I also in some cases work the air and feed pumps
from the bottom or other suitable part of the steam cylinder which in its
motion works the plungers of the pumps. If desired two or more cylinders
may be connected togetlier so as to work the same shaft. If however it be

page_text: desired to employ a stationary-cylinder then I connect the cylinder by suitable
links to the crank shaft, the crank shaft simply passing through suitable bear-
ings carried at the ends of such links; by these means the thrust of the piston
on the crank shaft is resisted by the links connecting the cylinder thereto.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Clement Martin in the Great Seal Patent Office on the
26th August 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CLEMENT
MARTIN, of Hammersmith, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of February, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirtieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, tlre
said Clement Martin, Her special licence that I, the said 'Clement Martin,
my executors, administrators, and assigns, or such others as I, the said Clement
Martin, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
STEAM ENGINES," upon the condition (amongst others) that I, the said
Clement Martin, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention, and in
what manner the same was to be performed, and cause the same to be filed
in the Great Seal Patent Office within six calendar months next and .imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Clement Martin, do hereby declaro
the nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say.
The Invention has for its object improvements in steam engines, and relates
to a novel combination of parts whereby great simplicity and strength are
obtained; for this purpose I connect the piston rod to the crank shaft as
usual, whilst the cylinder is also connected to the crank shaft by two con-
necting rods, there being three cranks on the crank shaft.

page_text: In carrying out this Invention the cylinder may be made to oscillate, or it
and the piston may move in a straight line towards and from the centre of the
crank shaft. Telescopic or other suitable connections may be employed for
the steam and exhaust. I also in some cases work the air and feed pumps
from the bottom or other suitable part of the steam cylinder which in its motion
works.the plungers of the pumps. If desired two or more cylinders may be
connected together so as to work the same shaft.
And in order that my Invention may be more fully understood and readily
carried into effect I will proceed, aided by the accompanying Drawings, more

page_text: instead of connecting the steam and exhaust pipes, as shewn in the Drawing,
they may be arranged to work in a telescopic manner, the cylinder being in
this case controlled to work in suitable guides, the piston rod being connected
I have not
to the crank c¹ by a connecting rod, as will be well understood.
thought it necessary to show how the feed and air pumps may be worked, as
an engineer will, with the description already given, readily understand how
to arrange the parts for this purpose. If, however, it be desired to employ a
stationary cylinder, then I connect the cylinder by suitable links to the crank
shaft, the crank shaft simply passing through suitable bearings carried at the
ends of such links; by these means the thrust of the piston on the crank
shaft is resisted by the links connecting the cylinder thereto; in this case
the engine may be arranged to work either as a reciprocating or as an
oscillating engine, as may be desired. When working as an ordinary reci-
procating engine the piston rod will, as usual, be connected to the crank by a
connecting rod, as is well understood.
Having thus described the nature of my Invention, and the mode in which I
carry the same into effect, I would have it understood that I do not coufine
myself to the precise details herein shown and described; but what I do claim
is, the combined improvements in steam engines, substantially as herein
shewn and described.
In witness whereof, I, the said Clement Martin, have hereunto set
my hand and seal, this Twenty-fourth day of August, in the year of
our Lord One thousand eight hundred and sixty-seven.
Witness,
FRED. HARRIS,
Patent Agent,
35, Southampton Buildings,
Chancery Lane.
CLEMENT MARTIN. (L.S.)