IMPROVEMENTS IN TRUCKS OR ROLLING STOCK, CHIEFLY FOR NARROW GUAGE RAILWAYS
Year: 1883

page_text: LETTERS PATENT to Alfred Julius Boult of 323 High Holborn in the County
of Middlesex Engineer. for an Invention of IMPROVEMENTS IN
TRUCKS
OR ROLLING STOCK, CHIEFLY FOR NARROW GUAGE RAILWAYS" a communi-
⚫cation from Paul Dietrich of Berlin in the German Empire
PROVISIONAL SPECIFICATION left by the said Alfred Julius Boult at the
Office of the Commissioners of Patents on the 30th May 1883.
ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Engineer, "IMPROVEMENTS IN TRUCKS OR ROLLING STOCK, CHIEFLY FOR NARROW
GAUGE RAILWAYS" [a communication from Paul Dietrich of Berlin in the
German Empire]
The hereinafter described improvements relate to an arrangement of platform
trucks and the like chiefly designed for narrow guage railway lines, which enables
long platforms to be used even on uneven ground and on curves of short radius
thereby increasing the space for the load without further cost. In this improved
arrangement the mobility of the axles prevents the train leaving the rails which
at present so frequently occurs.
These trucks &c will be used principally for agricultural purposes and for
mining, but they will be advantageously used for looplines and mountain railways
also.
According to this invention a platform is carried by two small bogies with two
axles each in such a manner that the bogies can move under the platform within
certain limits independently of one another.
Each of these bogies, which may be constructed in any suitable manner, carries
an annular guide way of metal upon which the rollers work.
These rollers are loosely mounted in couples upon axles which run in bearings
fixed on the underside of the platform.

page_text: The said axles are likewise loosely held in their bearings and at the centre have
a thicker part in which is placed a vertical bolt-held so as to be free to rotate in
the centre of the trucks allowing rotation of these latter in a horizontal plane.
This construction will allow lines to be worked even if they are not level say
where there are difficulties in the level of the ground, when rise and fall meet, and
in this no bending strain is exerted upon the platform, as the bogies can adapt
themselves to the track one independently of the other, both vertically and
horizontally. This can take place even in short curves.
As hereinabove mentioned such a platform truck is specially adapted for places
where great difficulties are to be met as regards the level, and where the permanent
way of narrow guage railways has to be constructed as cheaply as possible.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alfred Julius Boult in the Great Seal Patent Office on the
30th November 1883.
ALFRED JULIUS BOULT of 323 High Holborn in the county of Middlesex
Engineer IMPROVEMENTS IN TRUCKS OR ROLLING STOCK CHIEFLY FOR NARROW
GAUGE RAILWAYS A communication from Paul Dietrich of Berlin in the
German Empire"
"
«
The hereinafter described improvements relate to an arrangement of platform
trucks and the like chiefly designed for narrow gauge railways lines which enables
long platforms to be used even on uneven ground and on curves of short radius
thereby increasing the space for the load without further cost. In this improved
arrangement the mobility of the axles prevents the train leaving the rails which at
present so frequently occurs.
These trucks & will be used principally for agricultural purposes and for
mining but they will be advantageously used for loop lines and mountain railways
also.
The accompanying drawings show in Fig 1 an elevation in Fig 2 a plan, in
Fig 3 a transverse section of a truck embodying this invention.
According to this invention a platform A is carried by two small bogies B. B'
with two axles each in such a manner that the bogies can move under the platform
within certain limits independently of one another.
Each of these bogies which may be constructed in any suitable manner carries
an annular guide way a of metal upon which work rollers r. r.
These rollers r. r. are loosely mounted in couples upon axles which run in
bearings b. b fixed on the underside of the platform.
The said axles are likewise loosely held in their bearings and at the centre have
a thicker part in which is placed a vertical bolt D. D₁ held so as to be free to
rotate in the centre of the trucks allowing rotation of these latter in a horizontal
plane.
This construction will allow lines to be worked even if they are not level, say
where there are difficulties in the level of the ground when rise and fall meet, and
in this no bending strain is exerted upon the platform as the bogies can adapt
themselves to the track, one independently of the other as clearly shown in
Figs 1 and 2 of the drawing, both vertically and horizontally, this can take place
even in short curves
As hereinabove mentioned such a platform truck is specially adapted for places
where great difficulties are to be met, as regards the level and where the permanent
way of narrow gauge railways has to be constructed as cheaply as possible,
In the drawings A is the platform B. B' are the trucks C. C₁ the roller axles
7. the rollers c. c¹ the part of the roller axles in which the pins D. D¹ work dis
a collar on the pin f the step for same. b. b. are bearings for the axles C. C¹.
As the details of construction shewn in the drawings will be readily understood
they require no fuller description it is however to be observed that it is not
intended to confine the invention to any special details but that these may vary
according to circumstances, the essential features of the invention having herein-
above been pointed out.

page_text: Having now described the nature of my invention and the manner of performing
the same I claim
The improvements in trucks or rolling stock chiefly for narrow gauge railways
as and for the purposes specified
In witness whereof I the said Alfred Julius Boult have hereunto set my hand
and seal this thirtieth day of November in the year of our Lord one thousand eight
hundred and eighty three
ALFRED J. BOULT (L.S.)