Year: 1886

page_text: We, CHRISTIAN DIENER and RUDOLPH BOLDT of Breslau, in the Kingdom of
Prussia and German Empire, Engineers 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 has for its object an improved description of flour mill machinery,
in which the agitator for the grain supplied to the mill, the mechanism for striking
the dust catcher and the automatic stopping mechanism for preventing the mill
from running when empty, are of special and novel design.
Referring to the accompanying drawings:-
I. The automatic stopping mechanism is shewn in Figures 1, 2, and 3.
II. The agitating mechanism is shown in Figures 1, 4 and 5.
III. The striking mechanism for the dust catcher is shewn in Figures 6 and 7.
The principle of the stopping arrangement consists in separating the two
grinding rolls A and A' and in stopping the feeding roll b.
The construction is as follows:-
At the top of the hopper a the clapper d turns on the axis W¹. This clapper is
depressed by the grain pouring into the hopper into the position shewn in Figure 1
and rises again to the position indicated by the dotted lines as soon as the delivery
of the grain ceases. The lever e secured to the clapper d on the same axis W'
sinks with its weight ƒ as d rises and rests upon the rod g, supported in position
by a half stretched spiral spring h and this lever e causes it to sink so low that the
sliding parts i of the rod k can pass over the projection of the rod g by the action
of the spiral spring m.
At the same time the weight o Figure 2 suspended from the sliding projection n
of the rod and attached to the bent lever p is thrown off, and the bent lever p
consequently assumes the position indicated by the dotted lines Figure 1. Its end
is attached to the cylindrical turned axle q, which rests in fixed bearings. The
axle q has an eccentric x at each end (Figures 2 and 3) moving in a cavity of the
guide pieces 8 Figure 1, of special forked shape and movable about the pivot t,

page_text: Figure 1. These parts 8 hold the axle u Figure 1 fixed above the axle q. The two
ends of the axle of the grinding roller A¹ also communicate by means of the
pieces w with the axle u. The regulation of the motion of wis effected by means
of eccentrics x on the ends of shaft w.
The two bearings W of the roller A¹ rest on the fixed cylindrical bar y. If the
bent lever p with weight o released from the sliding catch n takes the position
shewn in dotted lines on the drawing, the guide piece 8 actuated by the eccentric
of the axle q makes a rotation downwards, and ass is movable around t and w com-
9
municates with a by u the bearings of the grinding roller A¹ also make a movement
around Y and the rolls A and A¹ separate from each other.
By the moving on of the rod k, the fork Z fixed upon it effects upon the bent
lever B placed loosely between the forks of this latter, a rotation of B around D,
(the lever B being movable at D around a cylindrical pivot securely attached), and
the two pins of the clutch lever B, which work between the two rings of the
clutch coupling adjustable upon a feather of the axle F (Figure 3) detach at
the same time this clutch from the loose pulley G and the feed cylinder b ceases
to operate.
The adjusting of the roller A¹ is effected by the hand wheel H, which is fixed
together with an endless screw upon an axle and which rests on the two arms of
the guide piece s. A worm wheel which engages in the endless screw is placed
upon the axle u. When the hand wheel makes a turn, the endless screw, the
worm wheel and the axle u will also make a turn, consequently the eccentrics
attached to the arms of the bearings W will also make part of a turn around y and
thereby cause a forward movement of A¹ against A or vice versa. Thus the
adjusting of the cylinders is independent of their stopping, or of their propelling
mechanism.
When the rolls have been stopped by reason of the interruption of the feed it is
only requisite to raise the bent lever p and to suspend it by pushing back the
bar k, upon the sliding catch n, and the rolls immediately retake the position they
occupied before the machine ran empty. The above described stopping arrange-
ment is applicable to roller mills of all systeins.
The agitator represented in the figures 4 and 5, has for its object to feed in a
uniform manner, the wheat or other grain or pulverised or granulated bodies into
the mills or to render uniform the operation of the feed mechanism. Upon the
axle of rotation rests a cam disc 2, which engages with the forked lever 3. The
last rests upon the small support 4 and is movable around the pivot 5, and moreover
it is connected to the guide bar 6 by the rivet 7.
Upon the guide bar 6 which is movable in the bearings 8 there rest two
castings 9 to which there is fixed by means of screws the rake 10 with curved
prongs 11.
This arrangement works as follows:-
As soon as axle 1 and disc 2 commence to revolve the forked lever 3 makes
back and forward movements, as the forked lever 3 turns around the pivot 5, the
guide bar 6 acquires also a to and fro movement, and consequently the rake 10 is
kept continuously agitated.
If it be desired to stop the working of the apparatus without stopping the
rotation of axle 1 the clutch 13 movable on a feather upon axle 1 is thrown out of
gear by means of the lever 12; in this manner the cam wheel 2 is stopped and
the axle revolves freely in it. In the new apparatus for striking the dust catcher
the axle a¹ rests close to the feed hopper b¹ (Fig. 6) and the casing of the bolter c².
This arrangement might also be adjusted to a casing of stone etcetera. Upon the
axle a' is the endless screw or worm d¹, and the pin disc e¹ movable on a feather
along the axle a'. The worm & engages in the worm wheel f¹ turning freely on
the axle g¹. To the worm f¹ is fixed the crank h¹. Upon the grooved nave of the
adjustable pin disc e¹ rides the rod i screwed together of two halves with a pin k.
The latter and crank h¹ are connected by drawbar . In the casing of the sieve c¹

page_text: is an aspiration filter m³, and projecting striking rod al; upon the frame c is fixed
the hammer o¹, turning on the cylindrical pivot pl and lastly the lever q' is attached
to the hammer o¹.
The nose is firmly attached to the catch rod ; this nose engages in the
lever movable around the pivot s¹. In the aspiration tube u¹ is placed the
throttle valve v¹ connected to the weighted lever w₁ and to the roller ¹; from this
roller a little connecting chain passes over guide rollers to the levert connecting
this latter with the throttle valve v',
The axle a' may be actuated directly as shewn in the drawing, by the axle
of the feed rolls of a hopper by means of the worm A¹ and of the worm wheel B¹,
but it may also be actuated from any axle by cog-wheels, or belts.
The apparatus works as follows :—
The axle with worm d¹ and disc with points e¹ making 3 rotations per minute
actuates the worm wheel f¹, the relative speeds of worm and wheel being as 1 to 20.
By the rotation of the wheel f¹ which communicates by means of the crank hand
drawbar with catch rod ; this last and with it the disc with points e¹ gradually
acquires a to and fro motion longitudinally in the direction of the axle a¹.
The disc with points e¹ turns with the axle a', but movable on a feather whilst
the rod rests loosely in the grooved nave of it and thus does not participate in
the rotary movement. As soon as the wheel f' has assumed the position shewn
in the drawing the points e² and e³ fixed on the disc e¹ catch under the lever q¹ of
the hammer o¹ and raise the same, which falls as soon as the said points have
released the lever, in consequence of its weight striking the point n¹ and so freeing
the aspiration filter m¹ from dust. The hammer strokes are repeated 5 times at
every striking period during which time the disc with points e¹ on the axle a¹ has
retaken its original position consequent on the rotation of the wheel f¹ and no
longer engages, hence will follow a pause of six minutes, when the striking will
recommence.
During this time the pin ¹ communicating with the rod impinges on the
lever causing it to close the throttle valve v. The striking being finished the
pin releases the lever t¹ and then the throttle valve opens again by means of
the weighted lever w¹ upon it.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
In Roller Mill Machinery:
1. A stopping mechanism composed essentially of a lever e falling in case of the
machinery running empty from a raised position to a horizontal one and resting
with the clapper d upon a common axle W¹, which lever when it descends with its
weight upon the rod g held up by the spiral spring h, causes a displacement of i
of the rod k over the point of g: in combination with the bar K. held in place by
the spiral spring m and furnished with a weight. On this bar rests the bent lever p,
turning at its lower end round the axle g (Figure 1) the lever simultaneously
descending from k during the fall of e and separating roll A' from A by means
of the eccentric x and lastly by means of the guide piece w fixed on u and
communicating with the bearings W.
2. The combination of parts consisting essentially of the feed cylinder b with the
stopping device set forth in claim 1, including forked bar z fixed on k communi-
cating by the moving of k to the bent lever B a rotary movement around D and
separating by means of the two coupling pieces E the loose pulley G thus causing
the roll b to stop.
3. The disc 2 resting obliquely on the shaft 1 and forming by this oblique
arrangement a sort of worm with its edge in combination with the forked lever 3
and rake 10 bearing curved prongs 11, for the purpose of automatically stirring
the materials in the feed machinery.

page_text: 4. An automatic striking mechanism for the dust catcher in which an inter-
mittent action of the striker and throttle valve is secured essentially by means
of the piece ¹ the drawbar the catch rod the axle a' and the disc with
points e¹.
The whole substantially as described and shewn in the accompanying drawings.
WM P. THOMPSON & Co.,
323, High Holborn, London,
Patent Agents for the Applicants.