IMPROVE- MENTS IN PULVERIZERS
Year: 1884

page_text: I GEORGE JOHN FRITZ of 2014 South 3rd Street in the City of St. Louis in the
State of Missouri one of the United States of North America, Manufacturer of
Machinery do hereby declare the nature of the said Invention for IMPROVE-
MENTS IN PULVERIZERS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement, reference
being had to the accompanying Drawings forming part of this Specification and
in which
I GEORGE JOHN FRITZ of 2014 South 3rd Street in the City of St. Louis in the
State of Missouri one of the United States of North America, Manufacturer of
Machinery do hereby declare the nature of the said Invention for IMPROVE-
MENTS IN PULVERIZERS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement, reference
being had to the accompanying Drawings forming part of this Specification and
in which
Figure 1 is a top view with the nopper removed.
Figure 2 is a vertical longitudinal section taken on line 2, 2, Figure 1, the
hopper being in place.
Figure 3 is a side elevation, and
Figure 4 is a vertical transverse section taken on line 4, 4, Figure 2.
This Invention relates to a machine for crushing and pulverizing clay and other
hard substances and consists in features of novelty hereinafter fully described and
pointed out in the claims.
Referring to the Drawings A, represents the frame-of the machine, B represents
the main driving shaft journaled in boxes B¹ secured to the frame A. Secured to
this shaft is a pulley B2 to receive power, a fly wheel B³, and a pinion B*.
The pinion meshes into a cog wheel C₁ on one end of one of the crushing
rollers C, on the other end of which is a cog wheel C2, meshing into a similar
wheel C, on the other crushing roller.
The wheel C³ is preferably smaller than that C so that the rollers will be
revolved at different speeds, which results in more effectually pulverizing the clay
or other substance, as there is not only a crushing but also a rubbing pressure
between the rollers. This forms an important part of my Invention in a crushing
or pulverizing machine, though I am well aware that differential rollers have been
used in other machinery. The gudgeons of the rollers are journaled in boxes D¹, D²,
fixed in a frame D supported and secured to the frame A.
The boxes D are moveable so that this roller may be adjusted to or from the
other by set screws I passing through the rear ends of the frames D.
I prefer to place elastic cushions J, between the inner ends of the screws I and
the boxes D. L represents a hopper placed over, the rollers in which is a feed
roller M, on a shaft MI passing through the sides of the hopper and journaled in
boxes M², supported by standards M³ secured to the frame D.

page_text: The roller M is preferably corrugated as shown in Figure 2 so as to take better
hold of the clay or other substance and force it downward to the rollers C, and this
roller M is revolved by means of a cog wheel M* on one end of its shaft which is
engaged by a pinion M³ on one of the rollers C.
As the clay or other substance falls from the rollers C in a sheet it is pulverized
by a lanten wheel N, consisting of discs N¹ and connecting rods or bars N° see
Figure 4. The discs have shoulders N³ that fit up close against the rollers.
The clay or other substance falls through this wheel as shown by the arrows in
Figure 2 and is finely pulverized by being struck by the rods or bars. This wheel
has gudgeons N* journaled in boxes N³ secured to the underside of the frame A
and is driven by a cog wheel N° on one of the gudgeons engaged by the wheel on
one of the rollers C.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
First: In a pulverizer in combination with the two crushing rollers the
pulverizing wheel consisting of two discs connected by rods or bars, as set forth.
Second: In a pulverizer the combination of the hopper, corrugated feed roller,
frames A and D fixed and adjustable crushing rollers set cushions between the set
screws and the boxes of the adjustable roller and pulverizing wheel consisting of
discs having shoulders N³ and connected by rods or bars, the whole being operated
by suitable gearing and arranged substantially as and for the purpose set forth.
Dated this 20th day of June 1991.
G. J. FRITZ.
By Harris & Mills,
23, Southampton Buildings,
Agents.