PULVERISING MACHINERY
Year: 1854

page_text: LETTERS PATENT to Oliver Rice Chase, of Boston, State of Massachusett,
and United States of America, for the Invention of PULVERISING
MACHINERY."
PROVISIONAL SPECIFICATION left by the said Oliver Rice Chase at the
Office of the Commissioners of Patents, with his Petition, on the 20th
January 1854.
...
I, OLIVER RICE CHASE, of Boston, State of Massachusetts and United
States of America, do hereby declare the nature of the said Invention for
"PULVERISING MACHINERY" to be as follows:
20
The machine consists, in the first place, of an open cylindrical mortar, with
a hopper attached to a hole in the side of the mortar through which the sub-
stance to be pounded or pulverised is supplied. At the bottom of the mortar
is another hole, through which the pulverised substances are delivered.
Within the mortar is a revolving disc having on its edge a series of wings or
plates; these plates or wings divide the outer part of the mortar into a number
of distinct cells or chambers; working in each of these chambers is a stamper,
attached to and carried round with a revolving plate. These stampers are
alternately raised and allowed to fall by means of a series of cams or wedge-
like pieces worked by toothed wheels connected with a central revolving shaft
or axis. The operation of the machine is as follows:-The materials to be

page_text: pulverized are supplied-to the machine by the hopper hole already mentioned.
Each cell as it passes this hole receives a proper quantity for the action of
one stamper. The materials remain in the cell during one revolution of the
machine, in which time it receives repeated blows from the stamper. When
the revolution is completed, the powdered matter is thrown out through the
hole at the bottom of the mortar, and the cell is immediately afterwards
refilled at the hopper hole before mentioned.
What I claim as my Invention is, the combination of a rotative series of
cells and stampers within a circular or cylindrical vessel or mortar, with suitable
machinery for causing them to operate together upon the substances to be
crushed or pulverized.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed by
the said Oliver Rice Chase in the Great Seal Patent Office on the 20th
July 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, OLIVER
RICE CHASE, of Boston, State of Massachusetts and United States of America,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of January, in the year of our.
Lord One thousand eight hundred and fifty-four, in the seventeenth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Oliver Rice Chase, Her special licence that I, the said Oliver
Rice Chase, my executors, administrators, and assigns, or such others as
I the said Oliver Rice Chase, executors, administrators, and assigns, should
at any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
make, 'use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for "PUL-
VERIZING MACHINERY," upon the condition (amongst others) that I, the said
Oliver Rice Chase, by an instrument in writing under my hand and seal,
should particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the same
to be filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Oliver Rice Chase, do hereby declare
the nature of my said Invention, and in what manner the same is to be

page_text: performed, to be particularly described and ascertained in and by the following
statement:-
In the Drawings hereunto annexed,.. Figure, 5 is a perspective view;
Figure 1 is a plan of the machine; Figure 2 is a longitudinal section; Figure
3 is a transverse section; and Figure 4 is a detail top view of the cams and,
stampers.
Similar letters are used to designate corresponding parts in all the Figures.
A is the framework of the machine; mm, m, m, represent a cylindrical flat...
bottomed mortar in which the operation of pulverizing is performed; A' is the;
driving wheel on the end of the horizontal shaft B, which receives motion from
any suitable power. When manual power is employed a winch may be used;.,
as shewn at W', in Fig. 3. On the opposite end of the shaft: B, to that on
which the driving wheel is placed is a bevel cog pinion C, which works into:
and imparts motion to the bevel cog wheel D, which gives motion to the co
pinion E, and the cog wheel F, on the same shaft with D. The pinion E gives
motion to the wheel G on the upper end of the vertical shaft H. This shaft
passes down through the hollow main vertical shaft of the machine, and is
supported below by the bearing or socket I. Near the lower end of this shaft
it carries the wheel K, which gives motion to the wheel L and crown wheel M,
which drives the shaft of the bolting cylinder N. On the shaft B is a band.
wheel O, which by means of a band. drives wheel P, and its shaft Q, which
agitates the shoe R of the hopper S. The wheel F. gives motion to wheel T',
on the upper end of the hollow vertical shaft of the machine. Attached to
this shaft, near the middle of its length, is the bevel wheel U, which gives
motion to the pinions V, V, on the ends of the short shafts W, W, which carry
the cams X, X. These cams act against the pins Y, Y, projecting from the.
rods Z, Z, and alternately raise and drop the stampers a, a.
On the lower end of the hollow vertical shaft, and revolving with it, is
attached the disc B', having wings C, which divide the space between the disc
and the walls of the mortar into a number of cells, in each one of which fits a
stamper a. Each stamper has a rod, which works in a proper guide, and near
the top of each rod is a pin Y, by which the cam X raises and drops the
stamper. The wings and cells are most clearly shewn in Fig. 1.
The under side of the disc B¹ may be made hollow or concave. The wings
are sharpened at their lower edges; and have knife edges so shaped as to scrape -
the surface of the bottom of the mortar and carry round with them any sub-
stance which may be placed upon it. D' is a funnel through which the mortar
is fed; E' is a trough which connects the mortar with the bolting cylinder.

page_text: The opening in the bottom of the mortar with which the trough E' connects is
shewn at F', in Fig. 1.
Beneath the bolting cylinder N, are placed two drawers or other proper
receptacles G and H1, to receive the substances which pass through the bolting
cylinder...
'
The operation of the machine is as follows:-The substances to be pul-
verized are placed in the hopper S. Motion is then given to the shaft B, by
means of the winch W, or other power applied to the driving wheel A¹;
motion is thus communicated to the band wheel O, which by means of gearing
already described agitates the shoe of the hopper and commences the feeding
of the machine; at the same time the disc, B is revolved, and the stampers
begin to rise and fall. The substance to be pulverized is fed into the mortar
at the point where the funnel D' enters it; it is then carried round between
the disc'B' and the sides of the mortar by the wings C₁, and is continually
subjected to the action of the stampers until it has passed entirely around the
mortar and arrived at the exit hole F (see Figure 1),' when it drops in a finely
powdered condition- into the trough E, which conducts it to the bolting
cylinder N, driven as before described. Here it is bolted through cloths of
any desired fineness into the drawer or receptacle G¹. The particles which are
too coarse to pass the bolting cloths are received in the drawer H¹, and are
returned to the hopper S, to be passed a second time through the machine.
This machine is particularly well adapted to the pulverizing of sugar, gums,
and other substances of an adhesive character.
"
What I claim as my Invention is, the combination of a series of rotative
cells and stampers, within a vessel of any suitable form, with machinery, sub-
stantially such as described, adapted to cause them to operate together upon
the substances to be crushed or pulverized, the whole constituting a pulverizing
machine, substantially such as is herein-before described, and illustrated by the
accompanying Drawings.
In witness whereof I, the said Oliver Rice Chase, have hereto set my
hand and seal, this Nineteenth day of July, in the year of our Lord
One thousand eight hundred and fifty-four.
OLIVER RICE CHASE. (L.S.)