Year: 1890

page_text: Date of Application, 14th Oct., 1890-Accepted, 22nd Nov., 1890.

page_text: arrange themselves. A gap or opening may also be arranged near the middle of the
rim, on the side of the channel O, by which the largest stones fall out, instead of
going out by the cleaning channel P; this gap can be easily closed, at will, by slides
or other means.
The remainder of the stones pass on and collect in the channel P, and little by little
fall from its open end, in consequence of the movement of the panel or tray, and are
received in a convenient receptacle S¹.
The movement of the panel or tray is a longitudinal movement, which can be
divided into two movements; that is to say, a rapid elliptical movement takes place
approximately in a vertical plane passing through the side edge (of the panel) against
which backs the slope of the channel 0, and a horizontal rectilinear movement in
in the direction of the opposite side rim or edge, where the gap or opening R is
made.
The panel receives these movements through a pivot H, which rests on a lever G.
This lever G is pivotted at both its ends, the one end to the weighted crank F, keyed
on the transverse shaft E, the other end to the end of the lever I, itself pivotted to the
adjustable arm G. On turning the hand-wheel D, motion is communicated to the
pivot H, and, consequently to the adjacent part of the panel or tray, simultaneously in
a longitudinal and vertical direction, which resolves itself into an elliptical movement.
The spring K, which tends to constantly bring back the lever I right or left (Figs. 3
and 4), has the effect of accelerating the return movement of the panel from the right
or left hand. This accelerated movement is added to that resulting from the elliptical
form of the curve, and causes a rapid return movement of the panel. This rapid
return movement has a very great importance, for to this is due in great part the
perfect separation of matters of different density. It will be understood that the
spring K would be useless if it did not produce this effect, for the movement of
the panel would be produced in turning by hand the hand wheel D without the
aid of the spring K. It has then only one object, to produce the rapid return of
the panel.
The horizontal rectilinear movement of the other edge of the panel, which is consequent
on the preceding movement, is obtained by the aid of two frames or rocking beams M
attached to the legs of the framing A. They carry at their extremity a pivot supporting
the cross bars L, which carry also at one end a pivot upon which is hinged the panel C;
the other end of these cross bars is attached to vertical springs r bolted upon a table
or shelf Z. In order to permit the longitudinal displacements of the opposite
edge of the panel, these springs are subjected to the strains of flexion and torsion,
the opposite end of the cross bar L being forced to follow a horizontal rectilinear
path.
To adjust the extent of the elliptical movement, the handle V is provided with
notches, allowing of the position of the rod J to be varied, and consequently the arm G¹
upon which the lever is pivotted, by rocking the lever o¹ on the pivot o.
The
shaft D is supported by the bracket T or other convenient support.
The funnel U serves to receive the grain falling from the gap R, and lead it into
the sack S.
The action of the machine is as follows:
The coffee berries mixed with stones placed in the hopper B, fall into the
distributor N, which moves with the panel under the mouth of the hopper. The
materials constantly arriving at the same part of the panel or tray, arrange themselves
in their order of density, the lighter coffee berries being above the stones, & con-
sequently, on the movements of the panel or tray, pass over the grooves towards the
outlet R, from whence they fall into the sack. The stones and other heavier matters
remain in the grooves, and follow them until they arrive at the slope O, against which
they arrange themselves. Then, consequent on the movement of the panel or tray,
they work themselves little by little towards the cleaning channel P, and finish by
falling out of its opening, if not already discharged by an outlet situated near the
middle of the side of the tray, as before explained.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. In apparatus for taking away stones and sorting, by density, green coffee berries
and other substances, the employment of a panel or tray C arranged to receive a
compound movement of a peculiar character, substantially as described, and illustrated,
and for the purpose set forth.
2. In apparatus for stoning" and sorting, by density, green coffee and all kinds
of materials, the combination with the grooved panel or tray having the motion above
defined, of a slope O furnished with notches keeping gauge with the grooves of the
panel, and arranged and operating in the manner and for the purpose indicated with
reference to the drawing annexed.
3. In apparatus for stoning" and sorting, by density, green coffee and other
matters, the combination with the grooved panel or tray, having the motion above
defined, of a cleaning channel P, situated & operating in the manner and for the
purpose indicated with reference to the drawing annexed.
*
4. In apparatus for " stoning " and sorting, by density, green coffee and other
matters, in combination with the stoning panel, the employment of mechanism
consisting of a weighted crank F a lever supporting the pivot H of the panel, a
lever I, an arm G adjustable in height through the rod J, a notched handle V, and a
spring K, to produce an elliptical movement, with a rapid return in a vertical plane,
substantially as described above with reference to Figs. 2, 3 & 4 of the drawing
annexed.
5. In apparatus for taking away stones and sorting, by density, green coffee and
other matters, in combination with the " stoning" tray, the employment of an arrange-
ment comprising the pivoted frame M. the cross bars or traverses L., hinged upon the
pivots of the frames, the said cross bars being furnished at one of their ends with a
pivot supporting the panel or tray at the side of the edge furnished with the gap or
opening R, and being attached at their other end to a spring subjected to the strains
of flexion and torsion, with a view of permitting a movement of the panel,
substantially as described with respect to the Figs. 1 and 2 of the drawing
annexed.
6. The whole apparatus for taking away stones and sorting, by density, green
coffee & other substances comprising a grooved panel or tray C, a slope O, situate as
shewn, a cleaning channel P placed in the prolongation of the slope, and mechanism
designed to produce the elliptical movement & a rapid return, and also the rectilinear
movement, substantially in the manner and for the purpose indicated with respect to
the drawing annexed.
Dated this 14th day of October 1890.
NEWTON & SON,
Agents for the Applicant.