Year: 1896

page_text: Date of Application, 14th Apr., 1896
Complete Specification Left, 7th Jan., 1897-Accepted, 13th Mar., 1897
1, FRANZ ANTON SÜRTH, Railway Director, of Dortmund (Westphalen) in
the Empire of Germany, do hereby declare the nature of this invention to be as
follows:-
This invention relates to means for preventing the entrance of dust etc., into as
well as the escape of liquid lubricating material from an axle box through the rear
or inner wall thereof.
Two discs are forced by the action of the helical spring against both sides of
the rear wall of the axle box and in this manner close the axle-box at this side.
A sleeve connects the discs by means of the spring and closes or fills the annular
space between the discs and the axle. If desired a strip of leather can be forced
into a groove inside the sleeve. In order to enable the disc outside the axle-box to
be put in place, a collar on the sleeve, against which the spring takes its purchase,
and, correspondingly to it, the inner edge of the last named disc are cut out in
segments, so that it is only necessary to turn the disc part of a revolution after it
is on the sleeve, to ensure its remaining on said sleeve. After the sleeve with one
of the discs is pushed from the inside of the axle-box along the axle till it touches
the rear wall of the axle-box, the other disc is put in place as before described
from the outside and the helical spring is sprung in between the disc and the sleeve
collar. The spring at one of its ends is bent outwards so that the whole is securely
retained in place.
In a modified arrangement the discs tightly surround the axle and are connected
with each other by cotters, split-pins and blade springs in such way, as to clinch
the inner or rear-wall of the axle box and thereby tightly close the axle box at
this side. Between the two discs a narrow ring or collar is placed in the saine
plane as the rear-wall which ring sits tightly on the axle so that it can be
considered a fixed collar and rotates with the axle.
The packing against the axle becomes therefore a perfect one. This ring also
serves as packing against the discs and as the escaping oil finds its way outwards
stopped at these places, the packing may be regarded as very nearly an absolute
A better or more yielding way of closing, than either of the two described,
is not possible, especially when the discs are rubbed with tallow or other solid
lubricating material on the surfaces with which they press against the wall of the
axle box or the axle.
11000
BOULT & WADE,
Agents for the Applicant.

page_text: I, FRANZ ANTON SÜRTH, Railway Director, of Dortmund, (Westphalen) in
the Empire of Germany, 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 :-
This invention relates to means for preventing the entrance of dust etc, into as
well as the escape of liquid lubricating material from, an axle box. through the
réar or inner wall thereof.
The invention is illustrated in the accompanying drawing in Figures 1 to 5.
Figure 1 is a vertical section through the rear part of the axle box.
Figure 2 is a rear view of the axle box.
Figure 3 a view similar to that in Figure 1.
Figure 4 is a section of the box on the line a-y of Figure 3.
Figure 5 a section on the line y-z of Figure 4.
Two discs B and B' (Figures 1 and 2) are forced by the action of the helical
spring a against both sides of the rear wall A of the axle box and in this manner.
close the axle box at this side. A sleeve C connects the discs B and B' by means
of the spring a and closes or fills the annular space between the discs and the axle.
If desired, a strip of leather b can be forced into a groove inside the sleeve. In
order to enable the disc B¹ to be put in place a collar on the sleeve, c of the ring C, :
and, correspondingly to it the inner edge of the disc B¹ are cut out in segments
(Figure 2) so that it is only necessary to turn the disc B' through part of a
revolution, after it is on the sleeve C to ensure its remaining on said sleeve. After.
the sleeve C with one of the discs B is pushed from the inside of the axle box.
along the axle till it touches the inner wall A of the axle box, the other disc B' is
put in place as before described from the outside and the helical or other spring a,
is sprung in between the disc B₁ and the flange c of the ring C. The spring a at
one of its ends a' (Figure 2) is bent outwards so that the whole is securely retained
in place.
Figures 3, 4, and 5 show a modified form of construction.
g
'
In this arrangement the discs B and B tightly surround the axle, and are
connected with each other by cotters o split pins h and blade springs k in such way,
as to clinch the inner or rear wall A of the axle box, and thereby tightly close the.
axle box at this side. Between the two discs a narrow ring or collar D is placed
in the same plane as the wall A, which ring tightly surrounds the axle so that it
can be considered a fixed collar and rotates with the axle. The packing against
the axle becomes therefore a perfect one. This ring D also serves as packing
against the discs B B¹, and as the escaping oil finds its way outwards stopped at
these places, the packing may be regarded as very nearly an absolute one. A
better or more yielding method of closing, than either of the two described, is not
possible, especially if the discs B and B are rubbed with tallow or other solid
lubricating material on the surfaces with which they press against the wall of the
axle box or the axle.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A device for closing the inner end of axle boxes in order to prevent dirt and
dust from entering and lubricating material from escaping through the open inner
wall of the axle box, wherein the wall is tightly surrounded by two discs (B B¹)
surrounding the axle and in any suitable manner conuected with each other or

page_text: pressed against the inner and outer surface of the rear wall of the axle box,
producing thereby perfect closing of the inside of the axle box against the wall,
as well as against the axle, substantially as described.
2. A device for preventing the entry of dirt and dust into, and the escape of
lubricant from, an axle box substantially as described, and illustrated in Figures 1
and 2 of the accompanying drawings.
3. A device for preventing the entry of dirt and dust into, and the escape of
lubricant from, an axle box, substantially as described and illustrated in Figures 3, 4,
and 5 of the accompanying drawings.
1007
BOULT & WADE,
Agents for the Applicant.