IMPROVEMENTS IN CINDER SIFTERS
Year: 1879

page_text: LETTERS PATENT to Mary Ann Shaw, of Heath Villa, Leighton Buzzard, in the
County of Bedford, for the Invention of "IMPROVEMENTS IN CINDER SIFTERS."
Sealed the 13th January 1880, in pursuance of an Order of the Lord Chancellor,
and dated the 3rd July 1879.
PROVISIONAL SPECIFICATION left by the said Mary Ann Shaw at the
Office of the Commissioners of Patents on the 3rd July 1879.
MARY ANN SHAW, of Heath Villa, Leighton Buzzard, in the County of Bedford.
"IMPROVEMENTS IN CINDER SIFTERS."
My Invention has for its object the separation of cinders from their attendant
dust in such manner that no annoyance from the dust can be experienced by the.
operator.
My Invention consists in a box or case provided with a lid, within which box the
separating or sifting operation is performed. Such box or case has a shaft or axle,
resting upon suitable bearings, attached to or formed in the sides or ends of the said
case or box; one end of such axle projects externally to receive a crank handle.
Upon the shaft or axle is mounted a box for the reception of the ashes or cinders.
This box is of such a size as to admit of a certain amount of motion being imparted
to it within the external box by the shaft or axle, when actuated by the crank
handle hereinbefore mentioned. The bottom of the internal box is made of wire or
suitably formed sifting material having meshes or perforations. By moving the
handle backwards and forwards to the extent of a quarter of a revolution, or as may
be arranged, the cinders or ashes are moved sharply about, whereby the dust is
separated and falls through the meshes of the sifting medium into a drawer provided
for that purpose. The whole of the operation is effected without the escape of dust.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Mary Ann Shaw in the Great Seal Patent Office on the 14th January
1880.
MARY ANN SHAW, of Heath Villa, Leighton Buzzard, in the County of Bedford.
"IMPROVEMENTS IN CINDER SIFTERS."
This Invention has for its object certain apparatus for the separation of cinders
from their attendant dust in such manner that no annoyance from the dust can be
experienced by the operator.
The apparatus consists of a box or case provided with a lid, within which box the
separating or sifting operation is performed. Such box or case is provided with a
shaft or axle, resting upon suitable bearings, attached to or formed in the sides or
ends of the said case or box; one end of such axle projects externally to receive a
crank or winch handle. Upon the shaft or axle within the box is mounted a second
box for the reception of the ashes or cinders; this box is of such a size as to admit
of a certain amount of motion being imparted to it within the external box by tho
shaft or axle when actuated by the crank handle hereinbefore mentioned. The
bottom of the internal box is made of wire or suitably formed sifting material having
meshes or perforations. By moving the handle backwards and forwards to the
extent of a quarter of a revolution, or as may be arranged, so as to partially rock
the shaft, the cinders or ashes are moved sharply about, whereby the dust is sepa-
rated and falls through the meshes of the sifting medium into a drawer provided for
that purpose. The whole of the operation is effected without the escape of dust.
In the Drawings Fig. 1 represents isometrically the construction of apparatus.
Fig. 2 is a plan, and Fig. 3 is sectional front view.
A is the outer boxing with lid A'; B is the transverse shaft fitted with handle
B', and carrying the internal sifting box C; D are stops within box A to limit the
rocking of the sifting box C; E is the ash drawer. The sides of the sifting box C
are inclined inward to each other, so as to allow of the free rocking action of
said box.
Upon placing the cinders into the box the handle B' attached to the rocking shaft
B is moved quickly backwards and forwards, whereby the box is brought in contact
with the stops D, whereby a sudden jerk is given to the box, and the cinders and
ashes being thereby more energetically displaced, the ashes become readily separated
and fall down into the drawer below. By these means cinders may be effectually
sifted without causing dust in the apartment, and avoiding the waste of combustible
portions of the cinders.
Having cow described the nature and particulars of my said Invention, I claim,-
The improvements in cinder sifters as and for the purpose herein set forth and
described in reference to the accompanying Sheet of Drawings.
In witness whereof, I, the said Mary Ann Shaw, have hereunto set my hand
and seal, this Twelfth day of January, in the year of our Lord One thousand
aight hundred and eighty.
Witness,
JAMES HARDINGE, D. Sc., M.A.,
28, New Bridge Street,
Blackfriars,
London, EC.
MARY ANN SHAW. (L.S.)

page_text: No text detected.