Improvements in Mash Machines.
Year: 1894

page_text: Date of Application, 16th Jan., 1894-Accepted, 17th Feb., 1894
COMPLETE SPECIFICATION.
Improvements in Mash Machines.
I, ROBERT GARICH, of 910 Milwaukee Avenue, in the City of Chicago, in the
County of Cook and State of Illinois United States of America, Manufacturer,
do hereby declare the nature of this invention 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 mash machines and is illustrated in the accompanying
drawings in which
Figure 1 is a vertical axial section of a mash machine embodying my
invention.
Figure 2 is a plan view of such a machine.
Figures 3 and 4 are vertical sections of portions thereof on a larger scale.
Figure 5 is a horizontal section on the line 5-5, Figure 4.
The present invention consists in the features of novelty that are particularly
pointed out in the claims hereinafter.
1 represents a pedestal, supporting a journal-box 2, in which is journalled one end
of the driving shaft 3 carrying a gear-wheel 4, which meshes with a second and
larger gear-wheel 5 secured to the main shaft 6 of the machine. The lower end of
this shaft 6 is stepped into a bearing 7 supported by the pedestal 1, whence it
extends vertically through the mash tub 8.
Secured to the bottom of the tub, and projecting both upward and downward from
it, is a cylinder formed in two parts 12 and 13, with the lower one of which parts
communicates a pipe 14, through which fluid, under pressure, is admitted to and
permitted to escape from the cylinder for the purpose of operating a piston 15.
This piston is tubular, and through its passes the shaft 6.
Packing rings are shown at 16 and 17, rings for compressing them at 18 and 19,
and bolts for forcing the compressing rings up to their work at 21.
In the side of the piston are formed two longitudinal grooves 22, and to the top
of the cylinder are secured, preferably by bolts, two T-shaped blocks 23, the
stems 24 of which pass through slots in the side of the cylinder and enter the grooves
of the piston whereby it is held against rotating, while its end wise movement within
certain limits is not in any way interfered with.
To the upper end of the piston a gear-wheel 25 is rigidly secured by any suitable
means, as for example by a key 26, and since the piston cannot rotate, neither can
this gear-wheel.
Surrounding the shaft 6, above the gear-wheel 25, is a sleeve 27, which fits the
shaft loosely, so as to be capable of an endwise movement relatively thereto, its
relative rotary movement being prevented by a spline and groove. To this sleeve
is secured heavy cross-arms 28, carrying at their extremities hangers 29, which
support the bearings 30 for the outer ends of the stirrer shafts 31, the bearings 32
for the inner ends of said shafts being supported by the sleeve 27
Upon these
shafts are gear-wheels 33, which mesh with the gear-wheel 25, and in this way the
stirrer shafts are given a rotary motion.
The hangers 29 have portions 34 projecting downward below the bearings 30, and
the lower extremities of these are secured to sweep plates, or scrapers, 35, the inner
ends of said plates being secured to the lower ends of hangers 36, which depend
from short arms 37 secured to and carried by the sleeve 27.
Near its lower end the sleeve 27 is provided with a circumferential groove in
which fit tongues 38 formed upon half round plates 39 that are bolted or otherwise
secured to the gear-wheel 25. By this means the sleeve 27 and the piston 15 are

page_text: connected in such a manner that they are capable of relative rotary movement, but
are incapable of relative longitudinal movement. The object of this is to insure that
the sleeve 27 and its attached parts shall fall gradually and with the piston. Actual
practice has demonstrated that where the sleeve and piston are not connected, the
friction between the sleeve and rotating shaft 6 is great enough to hold the sleeve
in an elevated position, while the piston falls. The result is that as soon as the
friction between the sleeve and shaft is lessened in some way (as by the stopping of
the machine) the sleeve falls with a bang, and to the injury of the machine. It is
to avoid this that, according to my present invention, 1 connect the sleeve (or other
part to which the working parts are attached) and the piston by means of a coupling
which will permit of their relative rotary motion but prevent their relative
longitudinal motion.
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 :-
1. In a mash machine, the combination with a tub, the stirring mechanism and a
revoluble part by which it is carried, of a vertically movable plunger, a coupling
connecting the plunger and revoluble part aforesaid, whereby they are held against
independent longitudinal movement, and means for raising and lowering the plunger,
whereby the stirring mechanism is raised and lowered, substantially as set forth.
2. In a mash machine, the combination with a tub, stirring mechanism and the
revoluble part by which it is carried, of a vertically movable plunger, means holding
it against rotation, a coupling connecting the plunger and the revoluble part
aforesaid, whereby they are held against independent longitudinal movement, and
meaus for raising and lowering the plunger, whereby the stirring mechanism is
raised and lowered, substantially as set forth.
3. In a mash machine, the combination with a tub, of the stirring mechanism, the
revoluble sleeve 27 by which it is carried, said sleeve having a circumferential
groove, a vertically movable plunger, meaus for raising and lowering said plunger,
tongues occupying the groove of the sleeve, and means connecting said tongues to
the plunger, substantially as set forth.
4. In a mash machine, the combination with a tub, the stirring mechanism and a
revoluble part by which it is carried, of the vertically movable piston 15 located
beneath said revoluble part, a coupling connecting the piston and revoluble part, a
cylinder in which said piston fits, and means for raising and lowering the piston and
thereby raising and lowering the stirring mechanism, said piston being held against
rotation, substantially as set forth.
5. In a mash machine, the combination with a tub, the stirring mechanism and
means for rotating it, of a vertically movable piston having a longitudinal groove,
a cylinder in which said piston fits, said cylinder having an opening in the side, and
a T-shaped block secured to the cylinder so that its stem projects through the
opening in the side of the cylinder and into the groove in the piston, holding it
against rotation, substantially as set forth.
6. In a mash machine, the combination with the tub, the stirring mechanism, the
piston and a suitable packing device carried by the piston, of the cylinder in which
the piston fits, said cylinder being formed in two parts 12 and 13 removably attached
to each other, so that when the lower of said parts is removed the end of the
piston may be exposed to give access to the packing device, substantially as set
forth.
tea this 10th
of January 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.