IMPROVEMENTS IN Loco- MOTIVE ENGINES
Year: 1874

page_text: LETTERS PATENT to Peter Jensen, of 89, Chancery Lanc, in the
County of Middlesex, for the Invention of "IMPROVEMENTS IN Loco-
MOTIVE ENGINES." —A communication from abroad by Harald Asplund,
of Kristinehamn, in the Kingdom of Sweden.
Sealed the 22nd January 1875, and dated the 25th November 1874.
PROVISIONAL SPECIFICATION left by the said Peter Jensen at the
Office of the Commissioners of Patents, with his Petition, on the
25th November 1874.
I, PETER JENSEN, of 89, Chancery Lane, in the County of Middlesex,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
LOCOMOTIVE ENGINES," (a communication to me from abroad by Harald
Asplund, of Kristinehamn, in the Kingdom of Sweden,) to be as
follows:-
The chief object of this Invention is so to construct locomotives for
railways as to obtain a fire-box and furnace of greater width than here-
tofore. For this purpose the framework of the engine is arranged as

page_text: follows: The frames or horn plates in the fore part of the locomotive
are placed inside of the driving wheels and other front wheels and of
the steam cylinders, which are fastened to the said frames. In the front
of the fire-box the said frames terminate at and are fixed to a cross
plate, whence frames are carried along outside the fire-box and the hind
wheels, with cross stiffeners or girders as required, or the frames may be
carried on continuously, first inside the driving and other front wheels,
then bent out to clear the fire-box, and then carried along outside
the hind wheels or bogie wheels. If the locomotive is used for a line
with any sharp curve or curves a bogie is applied behind the fire-box,
and such bogie is carried, pivotted and with a sliding bearing, from a
cross girder passing from one of the said back frames to the other. By
this arrangement a fire-box of any required width is obtained irrespective
of the gauge of railway; a better distribution of the load is also obtained,
so that a locomotive of a given weight can be run on lighter rails than
berctofore.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
"
filed by the said Peter Jensen in the Great Seal Patent Office on
the 23rd March 1875. .
TO. ALL TO WHOM THESE PRESENTS SHALL COME, I,. PETER
JENSEN, of 89, Chancery Lane, in the County of Middlesex, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of November, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Peter Jensen, Her special licence
that I, the said Peter Jensen, my executors, administrators, and
assigns, or such others as I, the said Peter Jensen, my exccutors,
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 Loco-
MOTIVE ENGINES," a communication to me from abroad by Harald 3

page_text: Asplund, of Kristinehamn, in the Kingdom of Sweden,) upon the
condition (amongst others) that I, the said Peter Jensen, 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
Scal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE,. that I, the said Peter Jensen, do hereby declare
the nature of tho said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement, reference being had to the accompanying
Drawings and to the letters of reference marked thorcon, that is to
say:
The chief object of this Invention is so to construct locomotives for
railways as to obtain a fire-box and furnace of greater width than¸ here-
tofore. For this purpose the framework of the engine is arranged as
follows: The frames or horn plates in the forc part of the locomotive
are placed inside of the driving wheels and other front wheels and of
the steam cylinders which are fastened to the said frames. In the front
of the fire-box the said frames terminate at and are fixed to a cross
plate, whence frames are carried along outside the fire-box, and the hind
wheels with cross stiffeners or girders as required; or the frames may be
carried on continuously, first inside the driving and other front wheels,
then bent out to clear the fire-box, and then carried along outside the
hind wheels or bogie wheels. If the locomotive is used for a line with
any sharp curve or curves a bogie is applied behind the fire-box, and
such bogic is carried, pivoted and with a sliding bearing, from a cross
girder passing from one of the said back frames to the other. By this
arrangement a fire-box of any required width is obtained irrespective of
the gauge of railway; a better distribution of the load is also obtained,
so that a locomotive of a given weight can be run on lighter rails than
heretofore.
And in order that this Invention may be more clearly understood, I
will now proceed to describe the same with reference to the accom-
panying Drawings.
- Fig. 1 is a longitudinal vertical section through an outside cylinder
locomotive engine constructed according to this Invention; Fig. 2 is a

page_text: a, a, are the frames, to which the
axles b, b, b, are fastened. These
.
horizontal section through the same.
engine proper and the axle boxes for
frames are carried along inside of the wheels W, and terminate in front
of the fire-box c against the transverse junction plate d, to which the
hind frames faro fastened, which are continued along the outside of the
fire-box e, which may be of any desired suitable width, and outside of
the bogie wheels B which support the hind part of the locomotive.
h, h, h, arc cross stiffeners for strengthening the fore part of the frame-
work, and j, k, k, are cross stiffeners or girders for strengthening the
hind part of the framing; is a longitudinal stiffener. These aforesaid
stiffeners may however be arranged in many different ways according to
circumstances. B, B, arc the bogie wheels which support the hind part
of the locomotive, and which enable it to pass easily round sharp curves,
the rigid wheel base forming but a part of the whole length of the
locomotive.
Fig. 3 is a longitudinal vertical section through an outside cylinder
locomotive, also constructed according to this Invention, and Fig. 4 is a
horizontal section through the same. The frames a, a, are in this caso
carried along the fore part of the locomotive and bent out at the fire-
box, passing then along the sides of the fire-box e, and continued along
beyond the same outside the hind wheels B. Stiffeners or cross girders
may be employed as shown here or in any other convenient manner
according to circumstances. h, h, h, and d aro cross stiffeners in tho
fore part of the locomotive, and j and I are respectively a transverse and
longitudinal stiffener in the aft part of the locomotive.
i
In the preceeding Figures 1 and 2 the locomotive has a bogie carriage
at the hind part, and this will be found suitable for cases where the
locomotive is used for sharp or medium curves in the line of rails, but
the arrangement is by no means indispensable to the construction illus-
trated by the said Figs. 1 and 2, as the wheel base at this part of the
locomotive may be made rigid, as shown at Figs. 3 and 4.
The bogie carriage, as it is preferred to employ it in the just-named
cases, is illustrated separately by Figs. 5 to 8, Fig. 5 being a central
longitudinal section through same; Fig. 6, a horizontal section through
the framing carrying the bogic carriage; Fig. 7, a vertical section
through the said framing behind the bogie carriage; and Fig. 8 a
vertical cross section through the centre of the bogie carriage. M is the

page_text: rectangular framework of the bogic itself, which is strongly joined at
the corners, and stayed by transverse walls N, N, between which the
guide or journal P for the pivot X is fixed, which latter can turn in its
journal P as required, and is fastened to the cross girder M of the
framing which carries the hind part of the locomotive. The bogie
with its four wheels B being thus able to turn round its centre, facility
is offered to passing round curves. A collateral advantage of this
arrangement is that the weight, of the locomotive is better distributed
and on more points than usual. This applics also to locomotives con-
structed according to this Invention but without bogie, as shown at
Figs. 3 and 4, in which the locomotive is supported on eight wheels
instead of six as usual. The total weight of the locomotive may thus,
by the application of this Invention, without harm be great, while the
rails may be lighter than heretoforc.
And having thus fully described the nature of this Invention, and
some modes of carrying the same into effect, I declare that I claim,―
Firstly. Applying the framing in the forc part of the locomotive
carrying the engine proper inside of the wheels, and applying the
framing in the aft part of the locomotive outside of the fire-box, and
continued outside of the hind wheels or bogie wheels behind the fire-
box, all substantially as described and as shown.
Secondly. The construction and application of the bogie in the hind
part of the. locomotive, all substantially as shown and as described.
In witness whereof, I, the said Peter Jensen, have hereunto set
my hand and seal, this Twenty-second day of March, in the
year of our Lord One thousand cight hundred and seventy-
five.