Improvements in the Manufacture of Axle-boxes.
Year: 1899

page_text: Date of Application, 20th Feb., 1899-Accepted, 29th Apr., 1899*.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Axle-boxes.
I, HEINRICH STÜTING, of Vaerststrasse 5, Dortmund, Germany, Engineer, do
hereby declare the nature of this invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:-
One of the chief conditions for securing the durability and good quality of an
axle-box is the suitable distribution of the material of which the box is composed.
It is well known that an axle-box has to withstand all the shocks that occur during
the motion of the vehicle, and whose maximum effect is exerted upon that part
of the axle-box which is situated above the journal of the axle.
This invention consists in the application to the manufacture of axle-boxes,
of an otherwise known process, by means of which alone a proper distribution of
material can be produced and which at the same time admits of making axle-
boxes of a uniform shape, which does not require special openings and arrangements
for draining out the oil but itself contains such an oil outlet.
In the accompanying drawings the successive stages of the process are
illustrated by diagrams.
The process consists essentially of the following operations:-
-
A hollow cylindrical body, closed at one end and either with an equal thickness
of wall throughout (Fig. 1), or with the surface of the annular part tapering towards
the open end (Fig. 2), is first of all jumped or forged into the shape shown in
Fig. 3 whereby the hollow space is provided with a neck a like that of a bottle.
The interior of the cylinder, whose transverse section perpendicular to the plane
of section of Fig. 3, is still circular, is now filled with a suitable elastic resisting
material such as rosin, sand, or compressed air, and the bottle-neck a is then
closed in any suitable manner, as by means of a screw or other plug. This having
been done, the body is pressed to the desired rectangular, oblong, or other cross
section in two directions at right angles to each other by means of suitable presses
and dies; from this operation the axle-box issues almost finished. The neck a
is now opened again, the resisting material removed, and an opening 6 made in
one of the walls of the box (Fig. 4) for the purpose of allowing the end of the axle
to pass through.
Lastly a cut is made on the upper half of the box so as to form a sharp-edged
opening; in this the flange c, intended for receiving the cover proper, is fixed,
simply by beading its edge over (Fig. 5); the axle-box is then complete: no
further openings or arrangements for draining out oil are necessary, as all oil
can be easily removed through the orifice a. This gives the great advantage
that there is no weakening of the material, which is distributed throughout in
the most serviceable manner possible, a fact which is of great importance as to
the present invention.
As may be easily seen from Fig. 5, the material is so disposed that the
strongest section is the section most liable to be severely tried by shocks that the
box may receive, so that axle-boxes constructed according to the present process

page_text: possess a considerable superiority in point of durability over those heretofore
made.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:―
A process for the manufacture of wrought iron axle-boxes according to which
a hollow cylinder closed at one end, is contracted at the open end in a known
manner so as to form a neck suitable for use as an oil outlet in the finished
axle-box, is then filled with an elastic material, and is finally pressed, by means
of suitable dies, in two directions at right angles to each other, so as to produce
the desired rectangular, oblong, or other cross section.
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F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.