IMPROVEMENTS IN SCREENS FOR SCREENING COAL AND OTHER MATERIAL OR MATERIALS, AND IN SHUTES' OR APPARATUS CON- NECTED THEREWITH
Year: 1876

page_text: LETTERS PATENT to Charles Buckland, of Swansea, in the County of Glamor-
gan, for the Invention of " IMPROVEMENTS IN SCREENS FOR SCREENING COAL
AND OTHER MATERIAL OR MATERIALS, AND IN SHUTES' OR APPARATUS CON-
NECTED THEREWITH."
Scaled' the 5th January 1877, and dated the 12th July 1876.
PROVISIONAL SPECIFICATION left by the said Charles Buckland at the Office
of the Commissioners of Patents on the 12th July 1876:
CHARLES BUCKLAND, of Swansea, in the County of Glamorgan. "IMPROVEMENTS
IN SCREENS FOR SCREENING COAL AND OTHER MATERIAL OR MATERIALS, AND IN
'SHUTES' OR APPARATUS CONNECTED THEREWITH."
The primary object of my Invention is the production of an apparatus or screen
which can be used when in one position for delivering through coal or other
material, and by altering the position of the bars forming the screen can be used
for screening coal or other material, the size of the coal or other material being
regulated with the greatest nicety, according to the position the bars are caused to
occupy.
A convenient way of carrying my Invention into effect is as follows:--The frame
is made of iron or wood, with cross bearers or girders made of cast iron, with
notches or bearing places at equal distances apart for the ends of the screen bars to
work in. The screen bars are preferably made of wrought iron or steel, flat,
bevel, or of any section or width. The said bars are rounded down at each end to
fit into the cross bearers or girders horizontally. I provide short levers or studs,
one end of each of which is directed through or into the said bars either at the ends
or any part, and the other ends of short levers are connected to one or two
cross rods of iron to work underneath the said bars, and to be worked backwards
and forwards to work the said bars on to their edges, flat or slantways, as required.
The cross bars are worked by means of one or more levers attached to the sides of
the framing to set the said bars to any gauge required..
The apparatus for working the shute consists of a fly wheel attached to a shaft
running across under the framing to work the shute up or down by means of
pulleys, chains, and rods, as required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Buckland in the Great Seal Patent Office on the 12th January
1877.
CHARLES BUCKLAND, of Swansea, in the County of Glamorgan. "IMPROVEMENTS
IN SCREENS FOR SCREENING COAL AND OTHER MATERIAL OR MATERIALS, AND IN
'SHUTES' OR APPARATUS CONNECTED THEREWITH."
The primary object of my Invention is the production of an apparatus or screen
which can be used when in one position for delivering through coal or other
material, and by altering the position of the bars forming the screen can be used
for screening coal or other material, the size of the coal or other material being
regulated with the greatest nicety, according to the position the bars are caused to
оссиру.
A convenient way of carrying my Invention into effect is as follows:-The frame
is made of iron or wood, with cross bearers or girders made of cast iron, with
notches or bearing places at equal distances apart for the ends of the screen bars to
work in. The screen bars are preferably made of wrought iron or steel, flat,
bevel, or of any section or width. The said bars are rounded down at each end to
fit into the cross bearers or girders horizontally. I provide short levers or studs,
one end of each of which is riveted through or into the said bars either at the
ends or any part, and the other ends of short levers are connected to one or two
cross rods of iron to work underneath the said bars, and to be worked backwards
and forwards to work the said bars on to their edges, flat or slantways, as required.
The cross bars are worked by means of one or more lovers attached to the sides of
the framing to set the said bars to any required gauge.
The apparatus for working the shute consists of a fly wheel attached to a shaft
running across under the framing to work the shute up or down by means of
pulleys, chains, and rods, as required.
And in order that my Invention may be sufficiently explained I will now proceed
to describe the same with reference to the accompanying Sheet of Drawings and to
the letters and figures marked thereon, that is to say:-
Figure 1 is a longitudinal section of a screen and "shute" constructed according
to my Invention; Figure 2 is a plan of the same.
Figures 3 and 4 are cross sections of the apparatus shewing the screen bars in
two different positions. The frame A is in this case constructed of malleable iron,
and the central part of its bottom is occupied by the screen bars B, which are con-
structed of iron or steel, and are of any desired section. In the Drawing they are
shewn of a flat oblong shape, and have round pins formed at their ends which fit
into notches or recesses cut for their reception in the cross bars or girders C, by which
they are upheld at the proper level and at the proper distance apart.
Studs or
levers D are rivetted to the screen bars in an angular position, as shewn also at
Figure 5, which is an enlarged view of a screen bar. These levers D are jointed to
bars E extending across and beneath the frame, and operated by handle levers F in
such a manner that as the handle levers F are moved in one or the other direction
the screen bars B are turned into a vertical or more or less angular or horizontal
position, as may be desired.
Figure 3 shews the screen bars in a vertical position, while Figure 4 represents
them lying horizontally. In order to fix them in any intermediate position the
handle levers F work in guards G, perforated at intervals with holes, so that by
inserting a stop pin the lever F may be held fast.
The screen illustrated on the Drawings is represented as fitted with two sets of
the herein-before described screen bars, although one or any greater number of sets
may be employed. As will also be seen, one set of the screen bars has in Figures 1
and 2 been shewn open, while for the sake of illustration the other set has been
shewn closed.
The "shute" H at the "tip" end of the screen is operated (as shewn in dotted

page_text: lines at Figure 1) by a fly wheel I acting upon a chain or chains J passing over a
pulley or pulleys K, and attached to the front of the shute, which is hinged to the
screen, say, at the point marked x, so that as the chain is coiled upon the fly-wheel
barrell the "shute" is correspondingly swung up or down. However, instead of the
foregoing arrangement, the shute may be hinged upon a cross shaft L, which being
operated by a handle lever, not shewn in the Drawings, correspondingly raises or
lowers the shute.
Having now described my said Invention and the mode of carrying the same into
practical effect, what I desire to claim as my Invention is as follows:-
First. The employment of screens with bars pivotted at both ends and capable of
being turned and set simultaneously into any desired position suitable to the material
being operated upon, all substantially as and for the purposes herein-before described
and shewn.
Second. Securing and operating the "shute" of such screens according to the
modes herein-before described and shown.
In witness whereof, I, the said Charles Buckland, have hereunto set my hand
and seal, this Sixth day of Decr., in the year of our Lord One thousand
eight hundred and seventy-six.
CHARLES BUCKLAND. (L.S.)