Improvements in Dust-guards for Railway Axle-boxes.
Year: 1891

page_text: Date of Application, 2nd Sept., 1891
Complete Specification Left, 2nd June, 1892-Accepted, 2nd Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in Dust-guards for Railway Axle-boxes.
I JOHN JULIUS ADLER of the Carriage and Waggon Department, Rajputana
Mulwa Railway Ajmere, East India, Assistant Superintendent, do hereby declare
the nature of this invention to be as follows:-
My invention relates to improvements in dust guards for railway axle-boxes, and
it has for its essential object to provide a dust guard which will automatically
adjust itself to take up wear and maintain a dust tight closure between the axle and
the back of the box.
My improvement consists essentially in providing a packing formed of a broad
band of leather encircling the axle and received between flanges around the
aperture in the dust guard shield, to which band tension is constantly applied in the
circumferential direction by means of a spring connected directly or indirectly
thereto so that any slack between the dust guard and axle will be taken up by the
strip of leather being constantly drawn up against the lower side of the axle which
is the point at which such slack is likely to occur, and at which the lubricant in the
box is liable to escape. The spring may be applied to thus act on the leather strip
in various ways which I will now proceed to describe.
The dust shield is a metal plate preferably of steel with flanged edges and
adapted to be fitted in the usual recesses provided for its reception at the back of the
axle-box. It has the usual aperture for the passage of the axle, said aperture
being surrounded on the inner side by a flanged ring forming a circumferential
groove or seat in which the leather strip is received. According to one arrange-
ment, one end of the leather strip is bevelled and fixed, whilst the strip after
completely encircling the axle passes through a slot in the ring and its end is
attached to a spiral spring made fast to a fixed point. Or the leather strip may be
quite free in its annular seat, the ends forming an open scarf joint at the top and
the spring being attached by its two ends to the leather strip at opposite sides of
the axle by suitable attachments passing through slots in the sides of the ring or
seat so that the lower half of the strip will always be drawn up close against the
axle, whilst the ends of the strip will slide in their seat and close up towards one
another at the joint. Or instead of attaching the spring directly to the leather
strip, it may be attached to the ends of a wire or band received in a groove and
encircling the lower half of the leather strip, the ends of the wire or band passing
through slots in the sides of the annular seat, as before.
Dated this 2nd day of September 1901
J. J. ADLER,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Dust-guards for Railway Axle-boxes.
1, JOHN JULIUS ADLER of the Carriage and Wagon Department, Rajputana
Mulwa Railway, Ajmere, East India, Assistant Superintendent, 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 :-
My invention has for its object to provide a dust guard for a railway axle box
which will automatically adjust itself for wear and maintain a dust-tight closure
between the axle and the back of the box. My improvement consists essentially
حيم

page_text: of a packing formed of a broad flexible band, preferably of leather, encircling the
axle and fitting in an annular grooved seat, said band being constantly acted on by
a spring so as to be constantly drawn up against the lower side of the axle where
slack due to wear of the journal bearings is liable to occur and allow the lubricant
in the box to escape.
The spring may be applied to thus act on the leather strip in various ways which
I will now proceed to describe with reference to the accompanying drawings,
forming part of this Specification, wherein
Figure 1 is a half-sectional side view, and Figure 2 a face view, partly in section,
of one arrangement of dust-guard.
Figure 3 is a cross-section shewing a slight modification of detail.
Figures 4 and 5 are similar views of a modified arrangement, and
Figure 6 is a sectional plan, on line 1-1 Figure 5.
Figure 7 is a part-sectional side view, and Figure 8 a face view, of another
alternative arrangement.
Figure 9 is a plan of the overlapping ends of the leather band.
The same letters of reference indicate the same parts in all the figures.
A is a sheet metal plate (or it may be a plate of wood cased or not in sheet
metal) to be received in the usual grooves in the axle-box near the back thereof.
Said plate has an aperture which coincides with the aperture in the back of the
axle-box for the passage of the axle B. To the plate A. a flanged ring C is
attached, said ring surrounding the aperture in the plate and forming a circum-
ferential groove or annular seat within which fits the leather band D encircling
the axle.
In Figures 1 and 2 one end of the leather band is bevelled, as at d, and fixed by
a rivet, as at d', to the annular seat C the other end of the band after completely
encircling the axle B and overlapping the bevelled end d passing through a slot c
in the annular seat C to the outside thereof, its end d being attached to a spiral
spring E made fast to a fixed point, such as the rivet d¹ for instance, the spring
being located, preferably though not necessarily, on top of the seat C. Or the
leather band D may be quite free in its annular seat, the ends forming an open
scarf-joint above the axle, as at d³ Figures 5 and 6, the spring E being attached by
its two ends to ears on the ends of a steel strip F encircling the leather band D
and passing through slots in the annular seat C at opposite sides thereof, so that the
lower half of the band D will always be drawn up close against the axle whilst
the ends of the said band will slide towards one another at the joint. The two
short strips F may be rivetted to the leather band instead of entirely encircling it
as shewn.
The annular seat C may either be rivetted to the plate A, as in Figures 1 and 2,
or it may be attached thereto by tangs c, as in Figure 3, rivetted and soldered to
the ring C and bent over after passing through holes in the plate A. Or it may be
attached to the plate A by screws, as in Figures 7 and 8, in which case the plate A
would conveniently be made of hard wood cased or not in tin plate. The tangs or
screws would be conveniently adopted when the slot in the top of the axle box is
not wide enough to admit the entire device in which case the plate A would be
dropped in and the flanged ring C introduced through the aperture in the
back of the axle box and secured to plate A before the box is placed on the axle
journal.
.
In Figures 7 and 8 the annular seat C fits partly within the aperture in the
plate A instead of being affixed only to the face thereof. In this case the said
annulus is made of two Hanged portions c', e² with their outward flanges juxtaposed
and united by soldering and rivets to form a flange for fixing to the plate A by
screws as above mentioned. In this case the bevelled ends of the band D are
split at about the middle of its width one of the overlapping double bevelled ends
passing inside and the other passing outside the opposite ends, as shewn in
Figures 8 and 9, one of the ends being made fast to the ring C by the rivet d' and
a spring E being attached as shewn to the end d² which alone passes through the

page_text: slot in the ring C as before whereby the band is constantly drawn up against the
axle as before described.
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
1. A dust guard for railway axle boxes, consisting essentially of a flexible
packing strip fitting within an encircling grooved seat and embracing the axle
in combination with a spring so connected to or applied to act on the strip as
to constantly draw it up against the lower side of the axle, substantially as
specified.
2. A dust guard for axle boxes, consisting of a flexible packing strip fitting
within an encircling grooved scat and embracing the axle, the strip being made fast
at one end and passing through a slot in its seat at the other end, in combination
with a spring attached to such end and made fast to a fixed point, substantially as
specified.
3. A dust guard for axle boxes, consisting of a flexible packing strip fitting
within an encircling grooved seat and embracing the axle, the two ends of the
strip making an open joint and being provided with attachments passing through
slots in the seat and connected to the opposite ends of a spring, substantially as
specified.
4. A dust guard for axle boxes, consisting of a flexible packing strip fitting
within an encircling grooved seat and embracing the axle, the strip being
encircled by a band passing through apertures in the seat and attached by its two
ends to the ends of a spring, substantially as specified.
Lates
Und day of Luno EXUD
lated this 2nd day at
no XUD
J. J. ADLER,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.