Improvements in Ash Sifters.
Year: 1895

page_text: Date of Application, 21st N v.. 1895-Accepted, 2:st Dec.. 1895
Improvements in Ash Sifters.
I, ROBERT SMITH THWAITE, of Little Falls, in the County of Passaic, and
State of New Jersey, United States of America, Inventor, 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 ash sifters, and the object thereof, is to provide an
apparatus whereby the ashes may be separated from the cinders, and the charred
and coked portions of the coal, and the object thereof, is to provide an effective
device of this class, which is simple in construction, and operation, and com-
paratively inexpensive, while being at the same time well adapted to accomplish
the result for which it is intended.
The invention is fully disclosed in the following Specification of which the
accompanying drawing forms a part, in which :-
Fig. 1, is a central longitudinal section of my improved ash sifter.
Fig. 2, a central transverse section with parts of the interior mechanism in full
lines; and,
Fig. 3, a side elevation of a roller sifter which I employ.
In the practice of my invention, I employ a casing A, which is oblong and
rectangular in form, and provided with a hinged top or cover B, and in one end
thereof, with a hinged door C, and in the opposite end with a discharge chute D,
from which projects inwardly and upwardly an inclined plate E, which extends
across the casing.
Mounted centrally and transversely of the casing is a roller F, at one end of
which on the outside of the casing is a handle G, and secured to the roller F, is a
plate K; and secured at or near the top of the casing and preferably m vertical
line with the discharge chute D, is a plate spring L, the inner end of which is
provided with an upwardly directed hook or projection M.
Mounted centrally and transversely of the casing near the top thercof, and in
vertical line with the roller F, is a shaft N, the pinions of which extend through
the sides of the casing and to one of which is secured a crank arm n, provided with
a bandle n'.
Mounted on or secured to the shaft N, is a wire screen drum, O, which is
cylindrical in form and provided with end plates or heads P, and formed in one
side thereof is a hinged door R, which is held closed by a hock S, secured to a
spring T, which is connected with a shaft N, and hinged to one of the heads P, of
the drum O, is a curved arm U.
The edge of the side of the deor R, opposite the hinges and centrally thereof, is
provided with a projection or hook W, and the operation will be readily understood
from the foregoing description when taken in connection with the accompanying
drawing. The hinged top or cover B, is provided with a hopper b, in which is
placed a removable cap b', and the ashes with the cinders and other articles or
products mingled therewith are poured into the drum O, through the hopper b, by
revolving said drum until the hinged door R, is beneath the said hopper and then
raising said hinged door by means of a hook applied to the projection W.
the ashes and other substances have been placed within the drum, the door R, will
be closed by the spring F, and the drum may be revolved by means of the crank n,
as will be readily understood, in which operation the ashes will be sifted through
the sides of the drum on to the plate K, and will fall into the bottom of the
After

page_text: casing A, and in this operation, the drum is revolved in the direction of the arrow
shown in Fig. 1. When the ashes are all sifted through the drum said drum is
revolved in the opposite direction, and in this movement the hook M, at the inner
end of the plate spring L, will be connected with the projection W, on the door R,
and upon said door, and at the same time the arm U, will strike the upper end of
the plate K, and depress the same, in position shown in dotted lines in said figure,
and the cinders, charcoal and similar products will pass out of the drum and
through the chute, as will be readily understood.
The connection of the arm U, with the head of the drum, is such that when the
latter is revolved in the direction of the arrow shown in Fig. 1, said arm will offer
no obstruction thereto, and will slide over the plate K, but when the drum is
turned in the reverse direction, to open the door, and discharge the cinders, said
arm will strike the plate K, and depress it into the position shown in dotted lines,
as herein before described.
My invention is not limited to the exact form construction and arrangement of
parts herein shown and described, and I therefore reserve the right to make
all such alterations therein, and modifications thereof, as fairly come within the
scope of the invention.
Having fully described my invention, I claim and desire to secure by Letters
Patent :-
:-
1. An ash sifter comprising a casing, a wire screen drum mounted therein, and
provided with a hinged, and spring operated door, an opening in the top of said
casing, through which the ashes are poured into said drum, and means for operating
said drum to sift the ashes therefrom, and separate the same the cinders and other
articles, substantially as shown and described.
2. In an ash sifter, the combination of a casing in which is mounted a screen
drum, said drum being provided with a hinged door, and said casing with a top or
cover, in which is formed an opening, a spring for holding the door on the drum
closed, a pivotally supported plate, within said casing, below said drum, and a
discharge chute at one side of said casing, and means for operating the drum to
discharge the ashes, into the bottom of the casing, and the cinders and similar
articles through said chute, substantially as shown and described.
3. In an ash sifter, the combination of a casing, provided with a hinged cover
in which is formed a hopper a screen drum mounted in said casing below said
hopper, and provided with a hinged and spring operated door, a plate pivotally
supported below said drum and a chute in one side of said casing below said
plate, and means for, operating said drum for discharging said ashes into the
bottom of the casing, and the cinders through said chute, substantially as shown
and described.
4. An ash sifter comprising a casing which is rectangular in form, and provided
with a hinged cover, in which is formed a hopper, a screen drum mounted in aid
casing, below said hopper, said drum being provided with a hinged door and a
spring by which the door is held in the closed position, and said drum being also
provided with a hook or projection, a plate pivotally supported in said casing,
below said drum, a chute at one side of said casing, a plate spring connected with
the top of the casing, and projecting inwardly and adapted to operate in connection
with the hook or projection formed on the spring door, said parts being constructed,
combined and arranged, substantially as shown and described.
Dated this 6th day of November 1895.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.