IMPROVEMENTS IN LOCOMOTIVE ENGINES
Year: 1872

page_text: LETTERS PATENT to Hypolite Uhry, of Lima, in the Republic of
Peru, at present residing at Haxell's Hotel, Strand, in the County
of Middlesex, for the Invention of "IMPROVEMENTS IN LOCOMOTIVE
ENGINES."
Scaled the 17th December 1872, and dated the 4th July 1872.
PROVISIONAL SPECIFICATION left by the said Hypolite Uhry at the
Office of the Commissioners of Patents, with his Petition, on the
4th July 1872.
I, HYPOLITE UHRY, of Lima, in the Republic of Peru, at present
residing at Haxell's Hotel, Strand, in the County of Middlesex, do hereby
declare the nature of the said Invention for " IMPROVEMENTS IN LOCOMOTIVE
ENGINES," to be as follows:-
This Invention has for its object improvements in locomotive engines,
and is applicable especially to engines of narrow gauge. In such
engines it is very desirable to get the centre of gravity of the engine low
down in order to obtain proper stability, and it is requisite to do this
without limiting the size of of the driving wheels of the engine. To obtain
this end, in place of forming the boiler with a single barrel or cylinder

page_text: with a fire-box at one end and a smoke box at the other as is usual, I
form it with three barrels or cylinders, and the tubes of the boiler are
divided between these barrels or cylinders into three sets. The driving
wheels of the engine are placed between the central barrel or cylinder
and the outer ones, and so may be of any required height.
.
In order to equalise the drauft between the tubes in the several sets,
I prefer to divide the smoke box into two parts by a central upright
partition. Each part of the smoke box has its own chimney, and
receives the exhaust from one of the cylinders.
The fire-box I prefer to divide in a similar manner into two compart-
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Hypolite Uhry in the Great Seal Patent Office on
the 3rd January 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HYPOLITE
UHRY, of Lima, in the Republic of Peru, at present residing at Haxell's
Hotel, Strand, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourth day of July, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Hypolite Uhry, Her special license that
I, the said Hypolite Uhry, my executors, administrators, and assigns,
or such others as I, the said Hypolite Uhry, my executors, adminis-
trators, and assigns, should at any time agree with, and no others, from
time to time and at all times thereafter during the term thercin
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 Loco-
MOTIVE ENGINES," upon the condition (amongst others) that I, the said
Hypolite Uhry, 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 saine was to be performed, and cause the same to

page_text: 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 I, the said Hypolite Uhry, do hereby declare
the nature of the said Invention, and in what manner the same is to be.
performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say :—
This Invention has for its object improvements in locomotive engines,
and is applicable especially to engines of narrow gauge. In such
engines it is very desirable to get the centre of gravity of the engine low
down in order to obtain proper stability, and it is requisite to do this
without limiting the size of the driving wheels of the engine. To attain
this end, in place of forming the boiler with a single barrel or cylinder
with a fire-box at one end and a smoke box at the other as is usual, I
form it with three barrels or cylinders, and the tubes of the boiler are
divided between these barrels or cylinders into three sets.
The driving
wheels of the engine are placed between the central barrel or cylinder
and the outer ones, and so may be of any required height.
In order to equalise the draft between the tubes in the several sets I
prefer to divide the smoke box into two parts by a central upright par-
tition. Each part of the smoke box has its own chimney, and receives
the exhaust from one of the cylinders.
The fire-box I prefer to divide in a similar manner into two compart-
ments by a central upright water space.
In order that my Invention may be most fully understood and
readily carried into effect, I will proceed to describe the Drawings here-
unto annexed.
Figure 1 is a side view of a locomotive engine constructed according
to my Invention, and adapted to a three foot gauge or thereabout;
Figures 2, 3, and 4 are transverse sections of the same:
In Figure 2, and on the right hand side of the Figure, the section is
taken through one of the chimneys and through the smoke box. The
ends of the boiler tubes appear; the steam and blast pipes and the steam
cylinder are also seen.

page_text: On the left hand side of Figure 2 the section is taken through the
barrels of the boiler, and the first driving wheel or that next to the fire-
box is shewn with its crank pin and connection with the eccentrics.
In Figure 3 the section is taken one half through the fire-box and
the other in rear thereof through the foot plate of the engine.
-
In Figure 4 the section is taken in front of the valve gear, which is
clearly seen both in this Figure and also in Figure 1.
As will be clearly seen, the cylindrical part of the boiler is divided
into three barrels, and the fire-box divided into two parts also. The
smoke box has a partition in the middle, and is provided with two smoke
stacks. It should be understood however that the dividing of the fire-
box and smoke box is not indispensable, as a single fire-box and a single
smoke box can be used, the latter provided with but one chimney in the
usual way. By dividing the fire-box and smoke box and using two
chimneys a more uniform draft through all the tubes is obtained. There
are three pairs of driving wheels coupled together, the main connection
being made to the rear pair of driving wheels, and from there forward to
the two other pairs. There is also a single axle swing boggie under the
footboard of the engine in the rear of the furnace, which takes part of
the overhanging weight. This swing boggie has a radial bar, and is
connected by means of a balance or compensating lever to the springs
of the rear pair of driving wheels. The springs of middle and forward
pair of driving wheels are connected together by means of an equalizing
lever.
What I claim is, the construction of locomotive engines with boilers
having three or more barrels, with the driving wheels between the
barrels, substantially as described.
In witness whereof, I, the said Hypolite Uhry, have hereunto set
HYPOLITE UHRY. (L.S.)