Improvements in Dust-guards for the Axle Boxes of Railway Vehicles.
Year: 1890

page_text: Date of Application, 22nd Dec., 1890-Accepted, 28th Feb., 1891
COMPLETE SPECIFICATION.
[Communicated from abroad by JOHN ALDRICH WHITE, of Concord, New Hamp-
shire, United States of America, Manufacturer of Wood Working Machinery.]
Improvements in Dust-guards for the Axle Boxes of Railway Vehicles.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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 improvements in dust-guards for car-axle boxes in
which blocks operated by springs in a casing act in conjunction with a car-axle or
journal; and the object of these improvements are, first, to provide a dust-guard
that may be used on any ordinary car-axle box or housing; second, to provide a
dust-guard that is positive against the entrance of dust into the box or the exit of
oil from the box, and third, a dust-guard that is simple in construction, easily
operated and repaired at a small cost. These objects are attained by the
mechanism illustrated in the accompanying drawings, in which
Figure 1 is a sectional view of the housing, showing the dust-guard in position on
the journal.
Figure 2 is a side elevation of the dust-guard with one side removed to show the
blocks in position within the dust-guard proper, and the springs that operate the
blocks.
Figure 3 is a side view of the strips at either side of the blocks that hold them
within proper bounds, and the sides equal to the diameter of the journal, so that
they may be worn off and still retain the same relative position to the journal.
Similar letters refer to similar parts throughout the several views.
The axle-box or housing A may be the kind known as the "master car-builder's
standard," or any other kind of an axle-box serving the purpose of the same, if the
inner end is provided with a chamber or a receptacle for the purpose of containing
the dust-guard, and a slot at the top entering into the chamber to allow the
admittance of the dust-guard into the receptacle.
The frame or casing C may be made of tin or any other kind of suitable material
adapted thereto-in this case, of tin, to allow the blocks 6 to be as thick as possible,
which may be made of any kind of wood suitable for that purpose, one end being
cut to the shape that will conform to the outside periphery of the journal B, the
opposite ends being cut at right angles to either of its sides, except one corner,
which is removed to admit of the springs c, c, c, c, hereinafter referred to. One side
of the aforesaid blocks b, b, nearest the centre of the guard C is cut out or provided
with a tongue and groove to allow one of the blocks to pass by the other sufficient to
make a tight joint between the blocks, and also to allow the wood to shrink and
swell and not to bind within the dust-guard casing C, so that the springs c will hold
the blocks ó in contact with the journal B.
The casing in this case is preferably made of tin, of the proper size to allow
the edges to be turned up sufficient to make a receptacle of the required size for the
reception of the blocks b, b, b, b, and the springs c at either corner, and also the
strips D, D, at opposite sides of the blocks b, which may be the same distance apart
as the diameter of the journal B and the aforesaid strips are provided with slots at
the ends to allow the wires a, a to pass through and have a lateral movement to
take up any wear in the blocks or journal, the latter passing through a round hole
in the centre of the casing C, which is also provided with longitudinally-extended
slots d, d, d, d, on either side, through which passes the wires a, a, secured to the
blocks b at either end.
The wires a, a, previously referred to, and shown more fully in Figure 2, are

page_text: secured to the blocks b, b, by means of a hole drilled in the outer side of the
blocks b, nearest the casing C, C, through which passes the wires a, a, and through
the slots in the strips D, D and the slots d in the casing, sufficient to allow the
wires a to pass up the side of the casing C, and after reaching the top they are
bent at right angles to the sides of the casing, allowing them to pass across the top
at a distance from the casing to allow the lateral movement of the wires a, a, in the
slot d, one of the wires being longer than the other above the casing the shorter
wire secured to the blocks at the top of the casing, the longer wire to the opposite
end, so that, taking hold of the wires and bringing them together the blocks will
be drawn apart sufficient to allow the journal B to pass through with ease, and
when the wires are again released the blocks will come in contact with the journal
and be held therewith by the springs c, c, c, c, at either corner of the casing C.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
--A-dust-guard-provided-with-strips-D;-D-to-hold-the-blocks-within-proper
bounds, within the casing, and the said blocks provided with wires a, a, so arranged
as to hold the blocks apart when the wires are drawn together at the top, sub-
stantially as set forth and described.
HASELTINE LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
Lon
333032T