Year: 1887

page_text: Date of Application, 13th Sept., 1887
Specification Accepted, 18th Oct., 1887.
I, JAMES MADISON CALDWELL TYNER, residing at Aberdeen, in the State of Dakota,
one of the United States of America, gentleman, 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 relates to improvements in spark arresters for steam engines; and it
consists in certain novel features of construction, which will first be described in
connection with the accompanying drawings and then pointed out in the claims.
Fig. 1, of the drawings is a vertical sectional view of the smoke stack and its head
with the arrester in place.
Fig. 2, is a perspective view of the arrester.
Fig. 3, is a detail view.
Referring to the drawings; A, represents the smoke stack; and B, its head, of any
ordinary form, but preferably of the form shown, which is riveted to the stack
considerably below the upper end of the latter-that is to say, the stack extends some
distance up into the head for a purpose which will hereinafter appear. A short outlet
pipe, C. communicates with the interior of the head at a point as near as possible, to
the junction of the latter with the smoke stack, and is provided on either side with a
short pin, c.
D, represents a conduit pipe slotted at its upper end, as shown at, d, adapting it to
be secured over the outlet pipe by a bayonet joint, and provided at its lower end with
short pins d', similar to those on pipe, C.
E, represents a cap to fit over and close the lower end of the conduit pipe, it being
also slotted, as at, e, for attachment by bayonet joint.
Inside of head, B, a short distance above the top of stack A, is a series of lugs, b,
for supporting the spark arrester which arrester will now be described ;-F, represents
an inverted cone, made of wire cloth. The base of this cone is secured between the
annular plates, G, G₁, (the latter G₁, having a downwardly extending flange, g¹)
and its apex is covered by a metallic cap, H. Metallic braces I, secured to the
to the underside of the plate, G¹, serve to support the cone and keep it in shape;
cap and

page_text: and the meeting edges of the wire cloth forming the cone are secured by means of a
metallic strip, J, the sides of which are folded over the edges of the cloth, as clearly
shown in fig. 1.
K, represents a downwardly extending and outwardly flaring wire cloth apron of a
size at its bottom to fit the interior of head, B. The upper end of this apron,
also is secured between plates, G, G³, which are clamped together by screws. The
apron is held in shape by the rim on plate, G₁, and by a metallic hoop, I, at its
bottom, to both of which it is secured and also, by metallic braces, M, secured to the
hoop and to plate G¹. N, represents springs, made of any suitable metal, secured at
their upper ends to the plate, G, while their lower ends are hooked under loop, L,
which allows them to yield when putting the arrester in place in the head.
When the spark arrester is in place in head, B, the hoop of the apron rests on the
lugs, b, the apex of the cone extends down into the top of the stack, A, and springs, N,
impinge against the inner side of the head with sufficient force to hold the
arrester in place.
Thus it will be seen that while the arrester is amply secured when in use, it may
be readily and easily removed when desired.
While the engine is in operation the sparks and cinders are thrown up against
the cone and by it deflected against the apron, which in turn, directs them down
into the annular space between the stack and the bottom portion of the head, whence
they pass out at the outlet and are conveyed away by the conduit. When the
engine is not in use the conduit may be detached and its cap used to cover the
outlet pipe.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is :-
1. The combination with the smoke stack and the head the former extending up
into the latter, which is provided with lugs on its inner side, of a removable spark
arrester, consisting of an inverted wire cloth cone, secured at its base between annular
plates, a downwardly extending and outwardly flaring wire cloth apron, secured at
its top between said plates, the bottom of the apron fitting the interior of the head and
resting on the lugs, and laterally acting springs for securing the arrester in place,
substantially as described.
2. The combination with the smoke stack and the head the former extending up
into the latter, which is provided with lugs on its inner side, above the top of the
stack, and an outlet at the junction of the stack and head, a conduit removably
attached to the outlet, and a removable cap for the conduit, of an inverted
wire cloth cone whose apex extends into the stack and whose base is secured between
annular plates, a downwardly extending and outwardly flaring wire cloth apron
secured at its top between said plates, the bottom of the apron fitting the interior of
the head and resting on the lugs, and laterally acting springs secured to one of the
annular plates and hooked under the lower edges of the apron, substantially as
described and for the purpose set forth.