IMPROVEMENTS IN DISINTEGRATING APPARATUS AND MACHINES
Year: 1880

page_text: LETTERS PATENT to Friedrich Carl Glaser, of Berlin, in the Kingdom of
Prussia and Empire of Germany, Engineer and Patent Agent, for an Invention
of "IMPROVEMENTS IN DISINTEGRATING APPARATUS AND MACHINES." A com-
munication from Gustav Heinrich Pfefferkorn, of Chemnitz. Germany.
PROVISIONAL SPECIFICATION left by the said Friedrich Carl Glaser at
the Office of the Commissioners of Patents on the 7th August 1880.
FRIEDRICH CARL GLASER, of Berlin, in the Kingdom of Prussia and Empire
of Germany, Engineer and Patent Agent. "IMPROVEMENTS IN DISINTEGRATING
APPARATUS AND MACHINES." A communication from Gustav Heinrich Pfefferkorn,
of Chemnitz, Germany.
This Invention relates to certain improvements in machines or apparatus used
for grinding and disintegrating any material or substance, embracing a means of
preventing the machines or apparatuses from running when empty or having no
material to work upon, an alarm apparatus signalling that the material is worked
up, an instantaneous stopping mechanism, and arrangements for separating the
working parts of the machines and apparatus.
The arrangement shown in Figures 1 and 2 (Sheet 1) of the accompanying three
Sheets of Drawing forming part of this Provisional Specification, serves specially
to prevent the machines or apparatus from running empty, thus preserving the
rolls, mill stones, or other working parts, when there is a want of feed material;
the signalling mechanism in connection therewith has for object to show the
employés when the working up of the material fed into the machine has been
effected.
This arrangement chiefly consists : —
1. Of a belt pulley a keyed on to the driving roll shaft, and of a loose belt
pulley b.
2. Of an adjustable belt carrying rod c, which at one end is provided with the
belt guide arms w¹, w².
3. Of a valve d which is made to turn on the stud m, and which at the arm
outside the hopper is provided with a stopping projection i, and the weight e.
Now, when the hopper of the machine has been filled by
ground into it, the shifting rod c is slid in the direction g.
change of position the belt is carried from the loose pulley
leading material to be
In consequence of this
on to the fast pulley a,

page_text: by which means the machine is set in motion. After this displacement of the rod e
in the direction of g, the valve d, loaded with material to be operated upon, presses
the point in the recess which is in the belt carrying rod c. This latter is thereby
arrested and the machine keeps on running.
The self acting stopping of the machine is effected in the following manner :-
With the working of the material in the hopper to be operated on, the valve d
loses its load. The weight e draws the stopping projection i from the recess h; the
spiral spring then pushes the belt carrying rod in the direction of 1, and the belt
glides on to the loose pulley b. Upon this movement being effected the stoppage of
the machine takes place.
For the purpose of signalling alarm a bell is fitted to the machine. The hammer
arın keeps the bell quiet by means of a projection cast on to the loose pulley.
Now, as soon as the bell is conducted on to the loose pulley the projection pushes
the hammer arm back at each revolution, thereby causing the hammer to strike
the bell and sound an alarm until material to be operated upon is again supplied
and the machine has got to work. For cases in which the machine may have to
remain inactive for a length of time the bell may be entirely disconnected.
The above described arrangement further allows of the machine also being stopped
at will when there is a supply of material to be operated on. For this purpose it is
only necessary to apply a pressure to the weight arm of the valve d, upon which the
stopping projection leaves the recess h, and the spiral spring pushes the belt
carrying rod c, and with it the belt, on to the loose pulley.
The arrangement, Figures 3, 4, and 44 (Sheet II.) with movable upper hopper, has
the same object as the valve d, on failure of a supply of material to be operated on;
the load is taken off the upper hopper, the spiral spring raises the stopping stud
i out of the recess h, the belt carrying rod is slid by the lever f loaded with a
weight in the direction of g, and the stoppage is effected in a manner similar to
that in the valve arrangement.
The arrangement in Figures 5, 6, 7, and 8 (Sheet III.) serves for cases where it is
required to stop rolls, mill stones, or other disintegrating machines or apparatus, by
means of the application of pressure; for example, by expanding rollers, friction
clutches, springs, or other couplings.
The arrangement and functions are the same as in Figures 1 and 2. With the
working up of the material in the supply or feed pipe to be operated on, the valve d
loses its load, the weight e draws the stopping projection i out of the recess h, and
the spiral spring k pushes the rod in the direction of . After the displacement
has been effected the weight rod is free and bears by reason of its weight, always
according to requirement, on the lever ordinarily used when expanding rollers and
the before mentioned descriptions of couplings are employed, and thereby causes
the stoppage of the machine.
In this Sheet III. the stopping mechanism is fitted to the tube which supplies
the material to be operated on.
In addition to these arrangements as illustrated and described in the Drawings
and description, a simple disconnection of the working and moving parts of the
apparatus, as for example, the mill stones, rolls, etc., when there is a failure in the
supply of material to be operated on, may be effected.
The adjustment of the above named working parts of the machine is usually
effected by means of set screws, excentric levers, and supporting rods. Now in
order to prevent the sharpness of the rolls, mill stones, etc. being injuriously affected
when there is a want of material to be operated on, on account of the friction going
on between these several parts, it is only necessary in order to obtain an automatic
separation of these parts of the machine to allow the rod z (Sheet 3, Fig. 8), with or
without a weight, according to the desired effect in the respective machines, to
act by impact or falling movement on the parts of the machine arranged to be
adjusted.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Friedrich Carl Glaser in the Great Seal Patent Office on the 2nd
February 1881.
FRIEDRICH CARL GLASER, of Berlin, in the Kingdom of Prussia and Empire
of Germany, Engineer and Patent Agent. "IMPROVEMENTS IN DISINTEGRATING
APPARATUS AND MACHINES." A communication from Gustav Heinrich Pfefferkorn,
of Chemnitz, Germany.
This Invention relates to certain improvements in machines or apparatus used
for grinding and disentegrating any material or substance, embracing a means of
preventing the machines or apparatuses from running when empty or having no
material to work upon; an alarm apparatus signalling that the material is worked
up; an instantaneous stopping mechanism, and arrangement for separating the
working parts of the machines or apparatus.
The arrangements shewn in the accompanying Drawing, Sheets I. and II., serve
specially to prevent the machines or apparatus from running empty, thus preserving
the rolls, mill stones, or other working parts when there is a want of feed material;
the signalling mechanism in connection therewith has for object to shew the
employés when the working up of the material led into the machine has been
effected.
This arrangement chiefly consists,-
1. Of a belt pulley a keyed on to the driving roll shaft, and of a loose belt
pulley b.
2. Of an adjustable belt carrying rod c, which at one end is provided on one side
with the belt guide arms w³, w³, and on the other side with the spiral spring k and
handle t.
3. Of a valve d which is made to turn on the stud m, and which at the arm
outside the hopper B is provided with the stopping projection and the weight e.
Now when the hopper B of the machine has been filled, by leading material to
be ground into it, the shifting rod c is slid in the direction indicated by the arrow g.
In consequence of this change of position the belt is carried from the loose pulley b
on to the fast pulley a, by which means the machine is set in motion. After this
displacement of the rod c in the direction of g, the valve & loaded with material to
be operated upon presses the projection into the recess h which is in the belt
carrying rod c.
This latter is thereby arrested, and the machine keeps on running.
The self acting stoppage of the machine is effected in the following manner :-
With the working of the material in the hopper to be operated on the valve d
loses its load. The weight e draws the stopping projection from the recess ; the
spiral spring then pushes the belt carrying rod in the direction indicated by the
arrow, and the belt glides on to the loose pulley b. Upon this movement being
effected, the stoppage of the machine takes place.
For the purpose of signalling alarm when there is a want of feed material, a
projection is arranged on the loose belt pulley b, and this belt pulley is kept
stationary by the hammer-arm of a sounding mechanism, Figures 2, 9, 10, whilst
the belt causes the fixed belt pulley to revolve, thereby operating the machine.
As soon however as the belt has been carried on to the loose belt pulley b, by
reason of a want of feed material, the projection f presses the haminer-arm back
at each revolution of the loose belt pulley, the hammer-arm being each time
impelled towards the bell u, in consequence of which the hammer q strikes the
bell u, and gives out a sound until feed material is again supplied, the belt carried
on to the fixed belt pulley a thus setting the machine in motion. In consequence
of this, loose belt pulley is again held stationary by the projection f and the
hammer-arm r. a, Figures 3 and 4, Sheet I., with moveable upper hopper, is for
the same object as the flap d. Upon failure of feed material, the load is taken off
the upper hopper, the spiral spring raises the stopping projection out of the

page_text: recess h, the belt carrier rod being then slid in the direction g by means of the
weighted lever f¹, and the stoppage is offected in a manner similar to that of the
flap arrangement.
The above described arrangement further allows of the machine also being
stopped at will when there is a supply of material to be operated on.
For this
purpose it is only necessary to apply a pressure to the weight arm n of the valve d,
upon which the stopping projection leaves the recess h, and the spiral spring k
pushes the belt carrying rod c, and with it the belt on to the loose pulley.
The arrangement, Figures 5, 6, Sheet II., is applied to the feed material supply
pipe c, and serves for those cases where it is required to stop rolls, mill stones, or
other disentegrating machines or apparatus by means of the application of pressure,
for example, when they are to be stopped by pressure rollers, friction clutches,
springs, or other coupling arrangements.
The arrangement and functions are similar to those of Figures 1 and 2. With
the working up of the material in the supply or feed pipe to be operated on, the
valve d loses its load, the weight e draws the stopping projection i out of the
recess h, and the spiral spring pushes the rod c in the direction of l. By this
displacement the weight rod is free, and falls by reason of its weight in the
guides o, always according to requirement, on to the adjusting or pressure lever
ordinarily employed for pressure rollers, and the above mentioned kinds of coupling
arrangements, thus causing the stoppage of the machine.
With this before described arrangement, illustrated in Figures 5 and 6 of the
Drawing, a simple disconnection of the working parts of the machine can also be
effected, as for example, of the mill stones, rolls, pullies, etc., on failure in the supply
of feed material.
The exact adjustment of the above named working parts of the machine is
usually effected by set screws, excentric levers, or lifting rods. Now in order to
prevent the sharpness of the rolls, millstones, pullies, etc., being injuriously affected
by friction when there is a want of feed material, it is only necessary for an
automatic separation of the same to allow the rod z, Figs. 5, 6, 8, Sheet II., with
a suitably heavy weight to strike on the parts of the machine arranged to be
adjusted, in consequence of which the working parts of the machine are separated.
Having now described and ascertained the nature of the Invention communicated
to me as aforesaid, and in what manner the same is or may be performed,
I claim as secured to me by the hereinbefore in part recited Letters Patent,—-
Firstly. The application to disintegrating machines and apparatus of a movable
hopper a, or of a moveable flap d in the feed hopper B, with reference to the feed
pipe c, for the purpose of automatically stopping the same, and also for automatically
separating the parts of the machine which work together.
Secondly. The stopping mechanism D arranged outside the feed hopper B or
feed pipe c, which chiefly consists on the one hand of a belt guide-rod C, with the
belt forks w¹, w², a spring k, a weight rod n, with stopping projection and
weight e; and on the other hand of a spring v, weight with lever f', weight with
rod, and two guides o.
Thirdly. An alarm arrangement consisting of a loose belt pulley b, with a
projection at its periphery, which sets in motion the hammer q of a sounding
incchanism when a machine is running empty.
In witness whereof, I, the said Friedrich Carl Glaser, have hereunto set
my hand and scal, this Twenty eighth day of January, in the year of our
Lord One thousand eight hundred and eighty one.
F. C. GLASER. (L.S.)