IMPROVEMENTS IN GRINDING MILLS WITH VERTICAL MILLSTONES
Year: 1884

page_text: I. EDWIN AMBROSE BRYDGES a member of the "International Association for
Patent Matters" of 26 Boulevard de Strassbourg in the City of Paris and French
Republic do hereby declare the nature of my Invention for "IMPROVEMENTS IN
GRINDING MILLS WITH VERTICAL MILLSTONES" 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 grinding mills with vertical mill-
stones the object of which is to produce a light transportable mill which can be
placed at will in any desired position as the same is of very small dimensions.
The maximal weight does not exceed 300 kilogrammes, the entire mill can be
mounted on a carriage, can, be transported from one place to the other, can be set
in operation in the open air and be driven by two horses or a power equal to two
horse power.
The mill operates in like manner with the mills of customary construction and
ordinary stones and can be employed for grinding all kinds of corn, beaus, maize
and such like and is specially a lapted for making grit.
The entire construction of the mill is extremely simple, scarcely any repairs are
necessary and the same is consequently in every way advantageous.
Figure 1 is an elevation.
Figure 2 a vertical section, and
Figure 3 a vertical section on the line C D in Figure 2.
The mill consists of the following parts.
On the cast iron parts a provided with four legs is a cast iron frame n to which
the case c and feed hopper bare attached. The vertical stationary millstone g is
fixed to the table a by means of adjustable screws and is provided with an inclined
boring o running to the centre of the same for feeding the corn to be ground from
the feed hopper to the millstones.
.
The second millstone f is keyed to the axle pand is provided with a spiral,
(for feeding the material to be ground) attached to the centre of the said millstone
by means of a suitable adjustable screw.

page_text: The axle p has its bearings e and in the slotted carriage which can be
reciprocated in the guide slots xx on the table a.
This axle or shaft p also carries the mechanism for driving the mill consisting
of the fast and loose pulleys h h¹ and a pulley z which drives the excenter on the
shaft k, which said shaft is carried in the bearings y y, by means of the strap d
whereby the said excenter gears into a suitable ratchet wheel m and regulates the
feed from the hopper 6 to the case or receptacle c. An up and down shaking
motion is transmitted to the charging or supply hopper so that the corn or other
material to be ground is continuously fed to the stones, and in fact in a like ratio
with the mass of ground corn passing off, but this shaking device can be arranged
in any suitable manner without in any affecting the tenor of this Invention.
A steel levert which gears into an endless screw or screw worm u which can
be rotated by means of the hand wheel 8, serves to regulate the distance between
the millstones ƒ and g.
Both millstones are surrounded by a sheet metal casing formed in two parts, to
which said case the flour outlet is attached.
The casing can be readily removed to enable the moveable millstone f to be
dismounted for which purpose the carriage is caused to slide in the guides xx.
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,―
•
A transportable grinding mill with vertical mill stones g and f which can be
adjusted by means of suitable adjusting screws and which said millstones are fed
with corn from the hopper by means of the boring o in combination with the
operating device as aforedescribed, the entire mill being constructed substantially
as described in the foregoing Specification and shown in the accompanying
Drawings.