IMPROVEMENTS IN SIFTERS OR SCREENS FOR SIFTING OR SCREENING CINDERS, AND FOR OTHER LIKE PURPOSES
Year: 1873

page_text: LETTERS PATENT to Josiah Pumphrey, of Birmingham, in the County
of Warwick, Manufacturer, for the Invention of "IMPROVEMENTS
IN SIFTERS OR SCREENS FOR SIFTING OR SCREENING CINDERS, AND FOR OTHER
LIKE PURPOSES."
Sealed the 1st August 1873, and dated the 14th March 1873.
PROVISIONAL SPECIFICATION left by the said Josiah Pumphrey at the
Office of the Commissioners of Patents, with his Petition, on the
14th March 1873.
I, JOSIAH PUMPHREY, of Birmingham, in the County of Warwick,
Manufacturer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN SIFTERS OR SCREENS FOR SIFTING OR SCREENING CINDERS, AND
FOR OTHER LIKE Purposes,” to be as follows:-
My Invention consists of the construction and combination or arrange-
ment of parts, herein-after described, of sifters or screens for sifting or
screening cinders, and for other like purposes.
The body of the sifter or screen consists of a cylindrical case, open at
top, within which a cylindrical sifter, or screen, or cage, capable of

page_text: rotation, is supported and works. The said rotating cylindrical sifter or
screen is open at top, and is made by preference of wirework. In the
axis of the cylindrical body or case is a fixed spindle or support, and in
the axis of the rotating sifter or screen is also a spindle partly hollow.
This partly hollow spindle is fixed at bottom to the sifter or screen, and
at top to a bar crossing the sifter in the direction of a diameter. The
sifter or screen is supported by and turns upon the fixed central spindle
of the body or case, the pointed end of the said fixed spindle taking into
a corresponding shaped seat or bearing in the top of the hollow part of the
spindle of the sifter. By this arrangement the sifter or screen can readily
be removed from and replaced upon the central spindle of the body or
case. The upper end of the spindle of the rotating sifter or screen is
solid and of a square or angular figure. The open top of the body or
case of the sifter is covered during use, so as to prevent the escape of
dust, by means of a lid. On the top of the said lid is a handle, by means
of which the sifter or screen is rotated. This handle is situated in the
axis of the lid, and is so connected therewith that it can be rotated
without moving the lid. The said handle projects through the lid, the
projecting part being made into a hollow square key or socket which
when the lid is placed upon the body or case takes upon the square
head of the spindle of the sifter or screen.
In using the sifter the ashes are placed in the rotating sifter or screen
within the body or case, and the lid fitted on the latter so as to close
the sifter, and at the same time gear the handle on the lid with
the rotating sifter or screen. By turning the said handle or giving
it an oscillatory or vibratory motion the ash is rapidly sifted or separated
from the cinders by centrifugal action, the said ash and the very fine
cinders falling through the meshes of the sifter or screen into the case
or body. The sifter containing the sifted cinders may be emptied of its
contents by lifting it from the fixed central spindle of the body or case.
After the sifter is removed the body or case may be emptied of its
contents. As the sifter or screen is completely enclosed during use no
escape of dust takes place.
The ancement for closing the ton of the body or case, and for

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Josiah Pumphrey in the Great Seal Patent Office on
the 9th September 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSIAH
PUMPHREY, of Birmingham, in the County of Warwick, Manufacturer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourteenth day of March, in the year
of our Lord One thousand eight hundred and seventy-three, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Josiah Pumphrey, Her special
license that I, the said Josiah Pumphrey, my executors, administrators,
and assigns, or such others as I, the said Josiah Pumphrey, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
SIFTERS OR SCREENS FOR SIFTING OR SCREENING CINDERS, AND FOR OTHER LIKE
PURPOSES," upon the condition (amongst others) that I, the said Josiah
Pumphrey, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed.
in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Josiah Pumphrey, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say :-
My Invention consists of the construction and combination or arrange-
ment of parts herein-after described of sifters or screens for sifting or
screening cinders, and for other like purposes.

page_text: The body of the sifter or screen consists of a cylindrical case open at
top, within which a cylindrical or conical sifter or screen or cage capable
of rotation is supported and works. The said rotating sifter or screen is
open at top, and is made either of wirework or of perforated sheet metal.
In the axis of the cylindrical body or case is a fixed spindle or support, and
in the axis of the rotating sifter or screen is also a spindle, partly hollow.
This partly hollow spindle is fixed at bottom to the sifter or screen, and
at top to a bar crossing the sifter in the direction of a diameter. The
sifter or screen is supported by and turns upon the fixed central spindle of
the body or case, the pointed end of the said fixed spindle taking into a
corresponding shaped seat or bearing in the top of the hollow part of the
spindle of the sifter. By this arrangement the sifter or screen can
readily be removed from and replaced upon the central spindle of the
body or case. The upper end of the spindle of the rotating sifter or
screen is solid, and of a square or angular figure. The open top of the
body or case of the sifter is covered during use, so as to prevent the
escape of dust by means of a lid. On the top of the said lid is a handle,
by means of which the sifter or screen is rotated. This handle is situated
in the axis of the lid, and is so connected therewith that it can be rotated
without moving the lid. The said handle projects through the lid, the
projecting part being made into a hollow square key or socket, which
when the lid is placed upon the body or case takes upon the square head
of the spindle of the sifter or screen.
In using the sifter or screen the ashes are placed in the rotating sifter
or screen within the body or case, and the lid fitted on the latter so as to
close the sifter and at the same time gear the handle on the lid with the
rotating sifter or screen. By turning the said handle or giving it an
oscillatory or vibratory motion, the ash is rapidly sifted or separated from
the cinders by centrifugal action, the said ash and the very fine cinders
falling through the meshes or perforations of the sifter or screen into the
case or body. The sifter containing the sifted cinders may be emptied
of its contents by lifting it from the fixed central spindle of the body or
After the sifter is removed the body or case may be emptied of its
contents. As the sifter or screen is completely enclosed during use no
escape of dust takes place.
case.

page_text: Figure 1 represents a side elevation of the said sifter or screen;
Figure 2 is a vertical section, and Figure 3, a plan with the lid
removed of the same; Figure 4 is a side elevation of the cage or screen
detached from the body or case. The same letters indicate the same
parts in the several Figures of the Drawing.
a is the cylindrical body or case of the sifter or screen open at top,
and provided with a jointed handle and a fixed side handle c for
lifting the apparatus; d is the cage, screen, or sifter situated within
the case or body a, and capable of rotating or oscillating therein.
The cage or sifter d is either made of perforated sheet metal, as
represented, or of wire gauze. It may have the conical figure re-
presented or a cylindrical figure. In the axis of the cage or screen d
is a spindle e, e², the part e being hollow or tubular, and the upper
part or head es being solid. The spindle e, e³, is fixed at bottom
to the conical part d of the cage or screen d, and at top to the
cross bar f of the said cage. The upper solid part e² of the spindle
e, e², of the sifter or cage d is square or angular and taper, as
represented. In the axis of the cylindrical body or case a of the
sifter or screen is a fixed spindle or support 9 upon which the cage
or sifter d is supported and turns, the pointed end g² of the said
fixed central spindle g taking into a corresponding shaped seat or
bearing in the bottom of the solid part or head e² of the spindle
of the cage or sifter (see the section, Figure 2). By means of the
fixed central spindle g of the body or case a, and the hollow or tubular
spindle e of the cage or sifter d, the latter may readily be removed
from and replaced in the body or case a. The open top of the body
or case a is covered during use by the lid h. On the said lid is a
rotating handle i, the said handle being so connected with the lid
as to be incapable of giving motion to the said lid. That part of the
handle i projecting from the inner side of the lid h is made of a
hollow key form marked to fit on to the square or angular head e*
of the spindle e of the sifter or cage d. When the lid is fitted
upon the case or body a to close the said case or body, the said key
part of the handle i fits upon the head e² of the spindle of the
cage or sifter d, and the latter may be turned or oscillated by means
of the said handle i. By this means the covering of the case or body a
of the screen for use gears a handle external to the said case or body
with the internal rotating or oscillating cage or soreen d.
To use
.

page_text: the sifter or screen the lid h is removed from the top of the body
or case a. The ashes to be screened are then placed in the inner
cage or sifter d, and the lid & restored to its place on the body, as
represented in the Drawing. On placing the lid on the case or body a
the key of the handle i takes upon the angular head e² of the spindle
of the cage or screen, and thereby gears the said handle with the said
cage or screen. By turning the said handle i, or giving it an oscillatory
or vibratory motion, the ash is rapidly sifted or separated from the
cinders by centrifugal action, the ash and fine cinders falling through
the meshes or holes in the cage or screen d into the body or case a.
During the use of the sifter or screen no escape of dust takes place
as the sifter is completely enclosed, as will be seen by referring to the
section, Figure 2. The sifting having been completed the lid h is
removed, and the sifter or cage d containing the sifted cinders may be
lifted from the fixed central spindle g and emptied of its contents.
The arrangement for closing the top of the body or case a and for
giving motion to the rotating sifter or cage d may be varied. For
be
example the lid may be hinged to the body, and the parts e³, i², may
reversed, that is, the part e² may be shortened and have an angular hole
made in its axis, and the part may be lengthened, and instead of
being hollow may have an angular peg fitted to engage with the angular
hole in the part e¹. Or the lid may be fixed to the rotating cage or
sifter. In this arrangement the said lid is divided across its middle, one
of the parts being hinged or jointed to the cage or sifter and opening
upwards, the other part being fixed to the cage or sifter. The handle
is fixed to the top of the hollow axis of the cage or sifter, and besides
being used to turn the cage or sifter is also used to lift the cage or sifter
from the body or case of the apparatus. I do not confine myself to the
cylindrical form of the body or case, nor to the figure of the rotating
sifter or screen.
Although my Invention is principally useful for sifting or screening

page_text: Invention. But I claim as my Invention the improvements in sifters
or screens for sifting or screening cinders, and for other like purposes,
herein-before described and illustrated in the accompanying Drawing,
that is to say, supporting within a hollow body or case, open at top, a
rotating or oscillating sifter, screen, or cage, provided with a central
hollow spindle, which hollow spindle works upon a fixed spindle or
support in the axis of the body or case of the apparatus; the rotating or
oscillating of the sifter, screen, or cage, within the closed body or case
being effected by a handle on the lid, the parts being constructed,
arranged, and used substantially as described and illustrated.
In witness whereof, I, the said Josiah Pumphrey, have hereunto
set my hand and seal, this Eighth day of September, in the
year of our Lord One thousand eight hundred and seventy-three.
15 Witness,
RICHARD SKERRETT,
Clerk to George Shaw,
Birmingham.
JOSIAH PUMPHREY. (L.S.)

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