MENTS IN STEAM ENGINES
Year: 1862

page_text: LETTERS PATENT to William Parker and George Henry Batman, of,
Copmanthorpe, in the County of York, for; the Invention of "
MENTS IN STEAM ENGINES."
"IMPROVE
PROVISIONAL SPECIFICATION left by the said William Parker. and
4.1
George Henry Batman at the Office of the Commissioners of Patents,
with their Petition, on the 10th March 1862.
We, WILLIAM PARKER and GEORGE HENRY BATMAN, of Copmanthorpe, in:
the County of York, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN STEAM ENGINES," to be as follows (that is to say) :-.
Our Invention has reference to improvements in steam engines, by which
the general disposition and arrangement of the working parts are greatly
simplified, and the same rendered less costly of construction than hitherto, and
consists in providing cylinders with double pistons, held firmly together by
means of a strong connecting arm or plate, in which the crank pin through
the intervention of a slot opening therein is caused to work and communicate
direct rotatory motion to the driving shaft, the said cylinders being formed or
arranged with suitable side openings for the reception of the crank and
bearings, as also small friction rollers employed for facilitating the movements
of the slide valves.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Parker and George Henry Batman in the Great
Seal Patent Office on the 10th September 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
PARKER and GEORGE HENRY BATMAN, of Copmanthorp, in the County of
York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Tenth day of March, in the year of our Lord One
thousand eight hundred and sixty-two, in the twenty-fifth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto us, the said
William Parker and George Henry Batman, Her special licence that we,
the said William Parker and George Henry Batman, our executors, adminis-
trators, and assigns, or such others as we, the said William Parker and
George Henry. Batman, our 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 "IM-
PROVEMENTS IN STEAM ENGINES," upon the condition (amongst others) that we,
the said William Parker and George Henry Batman, our executors or
administrators, 'by an instrument in writing under our, 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 per-
formed, and cause the same to be filed in the Great Seal Patent Office within
six calendar months next and immediately after, the date of the said Letters
Patent.
NOW KNOW YE, that we, the said William. Parker and George Henry
Batman, do hereby declare the nature of our said Invention, and. in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, that is to say
. Our Invention has reference to improvements in steam engines, by which
the general disposition and arrangement of the working parts: are greatly
simplified, and rendered less costly of construction than at present, and
consists in providing cylinders with double pistons, held firmly together by
means of a strong connecting plate or arm in which the crank pin is caused
to take through the intervention of a slot opening therein so as to work, and
thereby communicate direct rotatory motion to the driving shaft, the said
cylinders being formed or furnished with suitable side openings for the recep-

page_text: tion of the crank shaft and bearings, as also small friction rollers employed for
facilitating the movement of the slide valves.
But in order that our said Invention may be more fully understood and
readily carryied into effect, we now proceed to describe it by aid of the
accompanying Drawings, reference being had to the letters and figures thereon'
marked, that is to say:-
Fig. 1 represents a side elevation of a steam cylinder of our improved
construction; Fig. 2, an end view thereof; Fig. 3, a longitudinal vertical
section taken through the dotted line in Fig. 2; Fig. 4, a top or plan view of
the piston, separately shown; Fig. 5; a side view of the same; Fig. 6, a
transverse vertical section taken through the dotted line in Fig. 5; Figs. 7, 8,
9, 10, 11, and 12, detail views of the crank, crank pin, and trunion; and
Figs. 13 and 14 detached portions of the working slide valve gear. In each
Figure the same letters of reference denote similar corresponding parts.
A, A, cylinder, cast or formed in two parts, as represented; B, B, side
openings in the same; C, C, covers, for securing the ends in the ordinary
manner; D, D, double piston forming one, so as to travel together through
the medium of the slot, motion plate; or connecting arm E, E, as represented;
F, F, slot motion; G, G, driving shaft; H, H, crank; I, I, crank pin taking
into and receiving motion from the slot; J, J, trunion traversing the slot
vertically in connection with the crank pin, upon which it turns; K, K, steam
chest; L, L, supply pipe or passage; M, M, steam ports; N, N, eduction
port; 0, 0, slide valve through which the steam is regulated in its passage to
and from the cylinders; P, P, tapit motion for actuating the slide valve;
Q, Q, friction rollers for facilitating the movement thereof; R, R, spindle on
which it turns.
In conclusion to the foregoing description we would here briefly note that
the cylinders may be fixed and fitted in the ordinary manner, and employed
either in a vertical or horizontal position, and the central openings cast or
otherwise formed therein, the said shaft being supported upon bearings formed
therein or otherwise attached thereto, and we would note that separate steam
chests may be employed in place of the one as represented, by which means
the steam ports may be much shortened and a considerable saving of steam
thereby effected.
Having now fully described the nature of this our said Invention, and the
manner in which the same is to be performed, we would have it clearly
understood that we do not confine ourselves to the precise details herein-
before set forth and described, as a surface plate acting in like manner to and
in lieu of the crank may be employed so as to communicate motion to the

page_text: shaft, and at the same time steady the action of the piston, or the same may-
be otherwise varied without departing from the general principle of this our
said Invention, nor do we claim as of our said Invention the exclusive use of
the several parts herein-before mentioned, except when the same are employed.
in and for the purposes of our said Invention, which we hereby declare to
consist in the construction and employment of divided cylinders in connection
with the double piston surface, slot motion, and crank pin trunion in the
manner and for the purposes herein-before set forth and described.
In witness whereof, we, the said William Parker and George Henry
Batman, have hereunto set our hands and seals, this Sixth day of
September, in the year of our Lord One thousand eight hundred. and
sixty-two
WILLIAM PARKER. (L.S.)
GEO. H. BATMAN. (L.S:)
Signed, sealed, and delivered by the within-
named William Parker and George
Henry Batman, in the presence of
W. PHILLIPS, Solicitor,
York.