Improvements in Machines for Cleaning and Polishing Malt, Grain, or other substances, and for Mixing the same.
Year: 1897

page_text: TROYDDIONAL DEMOTIVATION.
Improvements in Machines for Cleaning and Polishing Malt, Grain,
or other substances, and for Mixing the same.
ALFRED CLARK, Northern Works, Appleton Gate, Newark on Trent, in the
County of Nottingham, Engineer, do hereby declare the nature of this invention
to be as follows;-
-
My improvements relate to that class of machine in which the grain or sub-
stance to be cleaned or polished is subjected to the action of brushes or scrubbers,
in conjunction with a screen or bed over which they move; and is for the purpose
of giving to the brushes or scrubbers a novel and effective motion, thereby securing
not only a better cleaning polishing and mixing action, but also a more uniform
distribution of the grain, or other substance, over the screen or bed.
To carry out my invention I mount on journals or bearings a shaft extending
across the screen or bed of the machine, and give a rotary motion to it in any
convenient manner, either by hand or power. Upon this- cross shaft I fix two
bevel or mitre wheels, one on each side of the screen or bed, and gearing into
these wheels are bevel or mitre pinions. Attached to the pinions, or to their shafts
in case the shafts revolve with them, are crank arms, which revolve in parallel
planes to the screen or bed. The cranks carry crank pins, upon which are pivotted
cross heads, having each two arms. To one arm of each cross head is secured the
end of a bar extending across the screen or bed at a convenient height above it;
the other end of each of the bars is guided in a bush or guide formed for it in
the opposite arm of the other cross head, and capable of sliding therein.
This arrangement ensures the cross heads being parallel to each other, at the
same time they are free to advance or receed from each other according to the
motion given them by their cranks. Attached to the bars by. suitable distance
pieces are a series of brushes or scrubbers, so arranged that they can be set at any
desired angle or height to the screen or bed.
The effect of this arrangement is that as the cranks rotate, they give, through
their cross heads and connecting bars, a peculiar semi eliptical or orbital motion
to the brushes or scrubbers over the face of the screen or bed. The two sets of
brushes or scrubbers advancing and receeding from each other and alternately
sweeping over each others path.
By causing the cranks to revolve in the same or opposite directions, and setting
them at various angles or leads to one another, the paths of the brushes or scrubbers
can be varied to suit any requirements, and the machine with but slight alterations
used for mixing purposes.
1000

page_text: Improvements in Machines for Cleaning and Polishing Malt, Grain,
or other substances, and for Mixing the same.
I, ALFRED CLARK, Northern Works, Appleton Gate, Newark-on-Trent, in the
County of Nottingham, Engineer, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:
This invention relates to improvements in that class of machine in which the
grain or substance to be cleaned or polished is subjected to the action of brushes
or scrubbers in conjunction with a screen or bed over which they move, and is
for the purpose of giving to the brushes or scrubbers a novel and effective motion,
thereby securing not only a better cleaning and polishing and mixing action,
but also a more uniform distribution of the grain or other substance,. over the
screen or bed.
In the accompanying sheet of drawings Fig. 1 represents my improvements in
sectional elevation and Fig. 2 in plan. I mount a rotating shaft A in journals
or bracket bearings a a' and extending across the screen or bed B of the machine,
motion can be given to the shaft by hand or by power in any convenient manner
such as by the chain wheel C. Upon the cross shaft A. I fix two bevil or mitre
wheels D and D¹ one on each side of the screen or bed B, and gearing into these
wheels are bevil or mitre pinions E and E¹ having their axes supported by exten-
sions of the bracket bearings a a¹..
Attached to the pinions E and E and rotating with them are crank arms e and e¹,
revolving in planes parallel to the screen or bed B. Pivotted to the crank arms e
and e' are cross heads F and F¹ having each two arms. To opposite arms of each
cross head are secured the ends of two bars G and G¹, extending across the screen
or bed B at a convenient height above it, the other ends g and g¹ of each of the
bars G and G¹ are guided in bushes or guides f and f1 formed for them in the other
arms of the cross heads and are capable of sliding therein. This arrangement
ensures the cross heads F and F1 being kept parallel to each and at the same time
they are free to advance or receed from each other according to the motion given
them by their respective cranks e and e¹. Attached to the bars G and G¹ by suit-
able adjustable distance pieces H are a series of brushes or scrubbers J, so arranged
that they can be set at any desired angle or height to the bed or screen B. In the
drawings the brushes or scrubbers J are shown attached to flats bars L carried by
the distance pieces H, but if required each brush or scrubber may be carried by
its own distance piece, and when the machine is required for mixing purposes
stirrers K may be substituted for the brushes J.
.
The effect of this arrangement is that as the cranks e and e' rotate they give
through their crossheads F and F¹ and the connecting bars G and G¹ a peculiar
semi eliptical or orbital motion to the brushes or scrubbers J over the face of the
screen or bed B. The two sets of brushes or scrubbers advancing and receeding
from each other and alternately sweeping over each others path. As shown in
the drawings the cranks e and e¹ revolve in opposite directions and have each' the
same angular lead, but they may be arranged so that they each revolve in the same
direction, or have different angular leads so that the paths of the brushes or
scrubbers J over the screen or bed B can be varied to suit different materials and
requirements, and the machine with but slight alteration used for mixing
purposes.

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. The method of giving motion to the brushes, scrubbers J or stirrers K by
5 means of the bevil or mitre wheels and pinions D D and E E¹ in combination with
the crank arms e e¹ the cross heads F F¹ and the bars G G¹ substantially as shown
and for the purpose described.
2. The method of attaching the brush or scrubber carrying bars G G to their
cross heads F F¹, so that one end is rigidly fixed and the other capable of sliding,
for the purpose of allowing the cranks to revolve in the same or opposite directions
and with different leads substantially as shown.