IMPROVEMENTS IN APPARATUS FOR GRINDING OR PULVERISING GRAIN
Year: 1864

page_text: LETTERS PATENT to Henri Adrien Bonneville, of the British and Foreign
Patent Offices, 24, Rue du Mont Thabor, Paris, in the Empire of
France, and 88, Porchester Terrace, Bayswater, in the County of
Middlesex, Patent Agent, for the Invention of "IMPROVEMENTS IN
APPARATUS FOR GRINDING OR PULVERISING GRAIN." -A communication
from Charles Krempff, Louis Kuhn, and Georges Nicolas Schoumert,
residing at Rue de Trevise, Paris, in the Empire of France, aforesaid.
Sealed the 1st August 1864, and dated the 21st June 1864.
COMPLETE SPECIFICATION filed by the said Henri Adrien Bonneville at
the Office of the Commissioners of Patents, with his Petition and
Declaration, on the 21st June 1864, pursuant to the 9th Section of the
Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRI
ADRIEN BONNEVILLE, of the British and Foreign Patent Offices, 24, Rue du
Mont Thabor, Paris, in the Empire of France, and 38, Porchester Terrace,
Bayswater, in the County of Middlesex, Patent Agent, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS IN
APPARATUS FOR GRINDING OR PULVERISING GRAIN," communicated to me by
Charles Krempff, Louis Kuhn, and Georges Nicolas Schoumert, persons
residing at Rue de Trevise, Paris, in the Empire of France, aforesaid, and

page_text: bave petitioned Her Majesty to grant unto me, my executors, administrators,
and assigns, Her Royal Letters Patent for the same, and have made solemin
declaration that it is a communication.
NOW KNOW YE, that I, the said Henri Adrien Bonneville, do hereby
declare that the following Complete Specification under my hand and seal
fully describes and ascertains the nature of the said Invention, and the manner
in which the same is to be performed, that is to say :-
These improvements consist in the combination and arrangement of the
organs herein-after described, but principally in the system of mounting the
stones; the upper one, or runner, on a solid shaft, and the lower one, or bed
on a hollow shaft, so that contrarily to the usual way of working them, in
which, as their names indicate, the upper stone only turns, the lower one
remaining fixed, both stones turn in contrary directions, thus doubling the
speed and grinding power.
In the annexed Drawing, Fig. 1 represents a side elevation of the improved
apparatus; Fig. 2 a front elevation of the same, and Fig. 3 a plan view of
the apparatus, showing only the hoppers, the millstones, and their mountings
or supports.
In all these Figures the letter A is a pignon working an angular gearing
C; B, horizontal shaft; C, angular gearing; D, D, pinions working two
gearings F, F; E, E, E¹, E, vertical shafts; F, F', toothed wheels; G, G,
G', G¹, pinions, working the spindles of the millstones; H, H, solid shafts
driving the upper stones; I, I, hollow shafts driving the lower stones; J, J',
steps or boxes for extremities of shafts H, H; K, bridge, carrying the step J;
L, regulating screw; M; fly wheel; N, N, N¹, N¹, stones; 0, 0, drum or casing
for millstones N, N¹; P, P, hopper frames; R, R, hoppers; S, S, passage or
tube for bringing the grain between the stones N, N¹; T, T, cylindrical bolter;
U, U, gallery for sacks of grain; V, adjustable bearing, steadying the hollow
shaft I; W, framing.
I employ water, steam, horse, or other power as motive force acting
on a pinion A which makes twenty revolutions per minute, transmitting the
movement to a horizontal shaft B, to which is adapted an angular pinion C
working two conical pinions D, D, turning in opposite directions, and making
forty revolutions each per minute. These two pinions are fixed to two ver-
tical shafts E, E¹², which each carry a toothed wheel F, F¹. These wheels
work the pinions G, G, G¹, G¹, mounted, G, G, on solid shafts H, H, and
G¹, G¹, on hollow shafts I, I. The solid shafts support the upper millstones
N', N', and the hollow shafts the lower millstones N, N. The solid shafts
H, H, pass inside the hollow ones I, I, and turn simultaneously with them

page_text: in opposite directions, and each of them consequently gives to the stone which
it supports a rotatory movement and in an opposite direction to its fellow with a
speed of eighty revolutions per minute, so that the total number of revolutions
for each pair of stones is one hundred and sixty. Each solid shaft pivots on
a step J, J, placed on a bridge K provided with a regulating screw L. Each
hollow shaft turns on a step fixed to one of the columns of the frame, through
which the solid shafts pass. At the opposite end of the horizontal shaft B to
that which receives the motive force is fixed the fly wheel M. The millstones
are covered by a drum O, O, which supports the frames P, P, of the hoppers
R, R, which receive the grain, and from which the grain runs by the conduits
S, S, between the stones, from whence the flour falls into the bolters T, T.
A gallery U for the sacks and for the workmen exists at the upper part of the
frame W. The number of stones may be larger or smaller, and the speed
may be regulated at will.
Having thus described the nature of the said Invention, and the manner in
which the same is to be performed, what I claim and wish to secure by Letters
Patent is,―
Firstly, the arrangement and combination of the organs substantially as
and for the purposes above described and represented in the accompanying
Drawings forming part of this Specification.
And, secondly, the application to mills for grinding or pulverising grain of
a solid shaft passing through a hollow one, for the purpose of giving an in-
verse or opposite direction to millstones, in the manner and for the purpose
substantially as above described.
In witness whereof, I, the said Henri Adrien Bonneville, have here-
unto set my hand and seal, this Fourth day of June, in the year
of our Lord One thousand eight hundred and sixty-four.
H. BONNEVILLE (L.B.)
H. BONNEVILLE. (LR)