IMPROVEMENTS IN MACHINERY OR APPA- RATUS FOR CRUSHING MALT AND OTHER GRAINS
Year: 1878

page_text: LETTERS PATENT to John William Tasker, of Halifax, in the County of York,
Patent Agent, for the Invention of "IMPROVEMENTS IN MACHINERY OR APPA-
RATUS FOR CRUSHING MALT AND OTHER GRAINS." A communication from
abroad by Charles Antoine Duprez, of Reims, France.
Sealed the 13th June 1879, and dated the 17th December 1878.
PROVISIONAL SPECIFICATION left by the said John William Tasker at the
Office of the Commissioners of Patents on the 17th December 1878.
JOHN WILLIAM TASKER, of Halifax, in the County of York, Patent Agent. "IM-
PROVEMENTS IN MACHINERY OR APPARATUS FOR CRUSHING MALT AND OTHER
GRAINS." A communication from abroad by Charles Antoine Duprez, of Reims,
France.
This Invention relates to machines for crushing malt and other grains, in which
the material is fed by a hopper to a pair of crushing rollers; and my improvements
consist in placing in the neck of the hopper a spirally fluted distributor or feed
roller, which not only supplies the material to the rollers in a regular manner, but
also rejects stones, nails, and other foreign matters.
This feed roller is so constructed and placed within the hopper that no matter can
pass it unless small enough to lay in the grooves or channels, anything larger being
removed by a cleaning board. The stones or foreign matter falls into a trough
placed to receive it, which can be readily emptied by means of a door provided in
the neck of the hopper.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John William Tasker in the Great Seal Patent Office on the
17th June 1879.
JOHN WILLIAM TASKER, of Halifax, in the County of York, Patent Agent.
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR CRUSHING MALT AND OTHER
GRAINS." A communication from abroad from Charles Antoine Duprez, of Reims,
France.
This Invention relates to machines for crushing malt and other grains, in which
the material is fed by a hopper to a pair of crushing rollers; and my improvements
consist in placing in the neck of the hopper a spirally fluted distributor or feed
roller, which not only supplies the material to the rollers in a regular manner, but
also rejects stones, nails, and other foreign matters.
This feed roller is so constructed
and placed within the hopper that no matter can pass it unless small enough to
lay in the grooves or channels, anything larger being removed by a cleaning
board.
The stones or foreign matter falls into a trough placed to receive it, which can
be readily emptied by means of a door provided in the neck of the hopper.
INE
Fig. 1 is a side elevation, Fig. 2 an end elevation, and Fig. 3 is vertical section;
Fig. 4 is plan view and Figs. 5 and 6 details shewing on a larger scale the
spirally fluted distributer and the crushing cylinders. The same letters of reference
are applied to identical parts in every Figure.
A is a hopper, in the neck of which is placed a spirally fluted distributer B.
The flutings are exagerrated for the sake of clearness, the actual depth being about
equal to the thickness of a grain of malt. C is the small crushing cylinder, the
axis of which is mounted in sliding bearings, and pressed by india-rubber springs c, c,
against the large crushing cylinder D, of which the axis is carried in fixed bearings;
E, E', are the fast and loose pullies mounted on the axis of the large cylinder D;
F is a pulley keyed upon the shaft of the distributer B, and receiving moting by
belt from pulley G on the shaft of the cylinder D; H is a casing covering the cylin-
ders, and terminating underneath in a shoot I for carrying off the malt after it has
been crushed; J is the framework made of wood or metal.
From the foregoing description it is easy to understand the working of the
apparatus. The malt being placed in the hopper falls upon the distributer, and is
distributed thereby upon the crushing rollers beneath, the larger of which imparts
revolving motion to the smaller by the pressure exerted upon the intervening
malt.
I attach special importance to the action of the spirally fluted cylinder, which
not only regularly feeds the crushing cylinders, but also rejects stones, nails, and
other foreign bodies, which are after found in malt. This rejection of foreign matter
is of great importance, and deserves particular attention. The distributer revolves
in the direction shewn by the arrow, and the malt lodges in the helical grooves.
The inclined strickle a is adjusted so as just to clear the periphery of the cylinder,
and any matter small enough to lie in the channels will pass downwards to the
crushers.
Should there be any larger matter, such as stones or nails, mixed with the malt
they are strickled off by the ledge a, and fall into the trough or reservoir formed
thereby.
As regards the general construction of the apparatus, persons familiar with the
operation will readily see that good results will be obtained in consequence of the
large diameter of the cylinder D, the result of which is that the maceration is more
complete, and permits of a more easy saturation when in the vat.

page_text: Having thus described the nature of my Invention, I would have it understood
that I claim
The employment of a spiral or other fluted cylinder or roller for distributing the
malt or other grain, and the use in connection therewith of the ledge a or its equi-
valent for the purpose of preventing the passage of stones or other objectionable
matter to the crushing cylinders.
In witness whereof, I, the said John William Tasker, have hereunto set my
hand and seal, this Sixteenth day of June, in the year of our Lord One
thousand eight hundred and seventy-nine.
J. W. TASKER. (L.S.)