AN IMPROVED APPARATUS FOR SIFTING CINDERS
Year: 1880

page_text: LETTERS PATENT to William Hammond, of Lewes, in the County of Sussex,
for an Invention of "AN IMPROVED APPARATUS FOR SIFTING CINDERS."
PROVISIONAL SPECIFICATION left by the said William Hammond at the
Office of the Commissioners of Patents on the 23rd January 1880.
WILLIAM HAMMOND, of Lewes, in the County of Sussex. "AN IMPROVED
APPARATUS FOR SIFTING CINDERS."
My Invention relates to an improved cinder sifter which is simple and compact
in construction, éffective and rapid in its action, and requires but little labor to
work it. It consists of a revolving cylinder having a perforated or reticulated
circumference and mounted to revolve on a horizontal axis within a suitable
casing. A door forming part of the circumference is provided in the cylinder for
the introduction of the cinders and dust, and for the removal of the cinders after
the dust has been sifted therefrom. At the bottom of the casing there is a drawer
or receptacle for the dust. A part of the front of the casing is hung on pivots, 80
that it may be swung into an inclined position directly beneath the screening
cylinder and provided with ribs forming a hopper shaped shoot onto which the
cleaned cinders fall when the door in the cylinder is opened. The upper end of
this shoot meets and forms a continuation of a short incline or shoot at the back of
the case perforated for the passage of any dust that may remain with the cinders
which fall down the shoot into any suitable receptacle.
The pivots of the shoot may be mounted in slotted bearings or arms, so arranged
as to swing the shoot sufficiently towards the rear of the casing as to render the
fixed shoot above mentioned unnecessary.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Hammond in the Great Seal Patent Office on the 23rd July
1880.
WILLIAM HAMMOND, of 197, High Street, Lewes, in the County of Sussex.
"AN APPARATUS FOR SIFTING CINDERS."
The Invention relates to an apparatus for sifting cinders, separating the larger
parts, which may be used again for fuel, from the dust which is unfit for that
purpose.
In order that the Invention may be understood I proceed to explain the
Drawings hereunto attached.
Figure 1 shews an external view; Figure 2 a front view with the upper part of
front taken off and revolving door open; Figures 3 and 4 are transverse sections,
and Figure 5 a plan of the inner side of the revolving door.
This Invention consists of a box, shewn in Figure 1, enclosing a wire sifter h
working on axle C passing through centre of sifter, and the sides of the box
attached at one end to the crank b, by turning which the requisite motion is given
to the sifter separating the cinders from the ashes, the ashes falling into the
drawer d at the bottom of the box. e is the door, and f, f, the pivots on which it
revolves.
Figure 2 shews lid a when opened to give access to sifter h in order to place
cinders therein. The sifter h is made of galvanized or ungalvanized wire work
attached to wooden ends k, k, of hexagonal or cylindrical form, as shown in Figures
3 and 4 (the cylindrical form is shown by dotted lines) with lid i to admit the
material to be sifted, and allow of means of discharging the same; the sifting
process is effected by a rocking or rotary motion, the motion given by turning the
crank b.
I is the partition to meet the revolving door when in position for discharging
cinders; the part m is of wire work, to prevent dust accumulating on the same.
Figure 4 is a section opened only at top, shewing lid i of the sifter opened for
receiving cinders.
Figure 3 shews position of revolving door e when discharging cinders after
separation is effected, which is done by opening lid i of the sifter and turning it to
the underside, causing the cinders to fall on the partition which now meets the
revolving door e forming an inclined plane down which the cinders fall, conducted
by the guides g, g, into a receptacle placed to receive them.
Figure 5 shews the plan of the inner side of the revolving door e; g, g, being
the guides and f, f, the pivots.
Having thus described the nature of my Invention, its object and method of
working, I would have it understood that I do not confine myself to the precise
details herein described, so long as the peculiar character of either part of the
Invention is retained; but what I claim is, the means of arranging the apparatus
for sifting cinders, and likewise for sifting any other material for which it is
adapted, as herein described.
In witness whereof, I, the said William Hammond, have hereunto set my
hand and seal, this Twenty third day of July, One thousand eight hundred
and eighte
WILLIAM HAMMOND. (L.S.)