Year: 1887

page_text: Date of Application, 28th July, 1887
Complete Left, 26th Apr., 1888
Complete Accepted, 1st June, 1888
I, FERDINAND BOSSHARDT of the firm of F. Bosshardt & Co. of 4 Corporation Street,
Manchester in the County of Lancaster, Mechanical Engineer & Patent Agent, do
hereby declare the nature of this invention, which has been communicated to me
from abroad by Antoine Ricci of Blidah, Algeria, Milling Engineer, to be as
follows:
The object of this invention is to combine a suitable number or sets of splitting,
crushing, and grinding cylinders and stones, in a vertical line, whereby much room is
saved, & better flour produced at a less cost.
To this end are arranged, in line above each other, to rotate in bearings on or
between a suitable frame two vertical shafts.
The top shaft is provided with three pairs of cylinders, viz., one pair of break
cylinders, and below the same two pairs of grinding cylinders, while the bottom
shaft is provided with two pairs of grinding stones, viz., one for finishing the bran,
and below the same one pair for reducing the meal to flour.
The break or grinding cylinders are each composed of an inner and outer cylinder,
the inner cylinder being fixed on to the vertical shaft and caused to rotate, while the
outer cylinders are carried by the framework and made stationary.
The breaking or grinding surfaces of these cylinders are grooved similar as in
ordinary roller mills, and the outer cylinder formed in two parts and made adjustable
so as to be brought nearer to or away from the outer surface of the inner cylinder for
the
purpose of varying the grip of the cylinders.
The adjustment of the outer cylinder is effected by guiding each half in the frame-
work, and causing the same to be moved to and fro, by means of a right or a left-
handed screw, acting respectively on each half of the outer cylinder.
These screws are actuated by means of a bent lever arranged to be lifted, by means
of a vertical screw and nut passing through a bracket, fixed to the frame.

page_text: The lower end of each of these cylinders is furnished with a box to receive the
treated material.
The grinding stones arranged on the bottom shaft are each surrounded by a
cover, the lower stone being also made adjustable by means of a lever and screw, in
a manner similar to that of the breaking and grinding cylinder described.
The arrangement of the grinding stones is similar in principle to that of grinding
stones used in ordinary flour mills, one being stationary and the other fixed to the
bottom.

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Splitting, Crushing, and Grinding
Grain.
I, FERDINAND BOSSHARDT of the firm of F. Bosshardt & Co., of 4 Corporation
Street, Manchester in the County of Lancaster, Mechanical Engineer and Patent
Agent, do hereby declare the nature of this invention which has been communicated
to me from abroad by Antoine Ricci, of Blidah, Algeria, Milling Engineer, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
The object of the invention is to combine a suitable number or sets of splitting,
crushing and grinding cylinders and stones in a vertical line, whereby much room is
saved and a better flour produced at a less cost.
And in order that my invention may be better understood I have caused to be
appended hereunto one sheet of drawings marked with letters of reference indicating
like parts in the various figures.
Fig. 1 is a front elevation, Figs. 2 & 4, sectional plans, and Fig. 3 a vertical
section of the machine.
In carrying out this invention, two vertical shafts a & a¹ are arranged to rotate
above each other in a vertical line in bearings b, carried on pillars or frame c.
The top shaft a¹ is provided with three pairs of cylinders, viz., one pair of break
cylinders d, and below the same two pairs of grinding cylinders e&f, while the
bottom shaft a is provided with two pairs of grinding stones or discs h & i., viz. one h
for finishing the bran and below the same one pair i for reducing the meal to flour.
The break & grinding cylinders d e & fare cach composed of an inner and outer
cylinder d, e, f, see Fig. 2, the inner cylinders d, e, & f, being fixed onto the vertical
shaft a¹ and caused to rotate by means of the pulley, while the outer cylinders d', e¹, & ƒ'
are carried by the framework c, & made stationary by means of the bars c¹.
The breaking or grinding surfaces of these cylinders d, e & f, are grooved similar
as in ordinary roller mills and the outer cylinders d', e', & formed in two parts and
made adjustable so as to be brought nearer to or away from the outer surfaces of the
inner cylinders d, e & f for the purpose of varying the grip of the cylinders d, e, & f
and giving access to cold air, in order to keep the material under treatment always
cool.
The joint of the outer cylinder d', e', & f is vertical and in section oblique and
tangent to the periphery of the grinding cylinder d, e & f respectively, see Fig. 2.
The adjustment of the outer cylinders d¹, e¹, & f¹, is effected by guiding each half
on bars e of the framework c and causing the same to be moved to and fro by means
of a right or a left handed screw & arranged in the framework c and acting
respectively on each half of the outer cylinders d', e¹, & f¹.
These screws & are actuated by means of a bent lever m arranged to be

page_text: lifted by means of a vertical screw passing through a bracket c² fixed to the
frame & a nut formed in the lever m.
C
The lower end of each of these cylinders d, e & f is furnished with a box or casing o
to receive the treated material.
The grinding stones or discs & i arranged on the bottom shaft a are each
surrounded by a cover g, the lower stones or discs & being also made adjust-
able by means of a lever m and screw », in a manner similar to that of the
breaking and grinding cylinder d, e & f, but vertically, the screw passing through
a nut formed in the arm a² and hinged to the lever m.
The arrangement of the grinding stones or discs is similar in principle to that
of grinding stones or discs used in ordinary flour mills, one being stationary and
the other fixed to the bottom shaft a and caused to revolve by means of the
pulley k.
The cover and casing g & o are each formed with a suitable spout, which serves
to conduct material or substance under treatment by suitable channels from one
pair of cylinders, & stones or discs to another, or otherwise as may be desired, the
whole of the two sets of cylinders & stones or discs rovolving simultaneously and
at the same speed.
To keep the material under treatment in the grinding stones or discs also cool, the
rotating part of the same is formed with an opening or slot to give access to the cold
air.
The number of cylinders, stones or discs in each set may be varied according to
requirement and circumstances.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
The combination of two vertical shafts a & a¹, arranged to rotate in a line above
each other in suitable bearings b&b, the upper shaft a carrying a suitable number
of breaking & grinding cylinders d, e & f, each rotating inside a corresponding
cylinder d, e¹ & and the lower shaft a carrying a suitable number of grinding
stones or discs & i rotating upon corresponding stationary stones or discs &
substantially as & for the purpose specified.
Dated this 25th day of April 1888.