Improvements in and relating to Apparatus for Removing Dust from Grinding and like Machines.
Year: 1899

page_text: Date of Application, 6th May, 1899-Accepted. 10th June, 1899
Improvements in and relating to Apparatus for Removing Dust from
Grinding and like Machines.
I, GUSTAV MICHAEL MAYER, of Offenbach-on-the-Main, in the Empire of
Germany, 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:-
My invention relates to apparatus for removing dust from grinding and like
machines.
In the grinding machines heretofore used it is customary to provide for the
removal of the dust produced by the grinding machine, through the agency of
suction apparatus, which is arranged either below or by the side of the rest or
support for the article to be ground.
By the tube leading to the fan of such apparatus much valuable space is
wasted and the article to be ground can be moved with much less freedom. The
workmen are very often obliged to remove lengths of tube, thereby rendering
the entire apparatus for the removal of dust useless.
By the improvements represented in the accompanying drawing I remedy this
defect in a very simple manner, inasmuch as the rest or support itself constitutes
part of the suction apparatus.
Figure 1 is an elevation, partly in section, showing the suction apparatus
applied to a grinding machine.
Figure 2 is an end elevation, showing this apparatus in section and elevation.
In carrying my invention into practice I arrange laterally upon the hollow
standard or frame a, which constitutes a casing, hollow arms 9. carrying each
a guide g which is adapted to be displaced sideways and in which the hollow
rest or support c can be moved vertically up and down and adjusted at will. All
the hollow arms are in communication with each other so that the dust produced
by the grinding machine can be removed directly by suction.
The rest or support for the article to be ground has a broadened top part with
an opening in front and holes m in the wall of the top part, these holes serving
for the passage of the dust which settles on the aforesaid top part or impurifies
the air in the vicinity.
A fan serves for the suction of the dust, such fan being arranged on the
side opposite the rest or support on the frame a or in any other suitable manner.
I conduct the dust away direct from the top of the rest or support for the
article to be ground, which is of considerable importance.
The suction takes place through the hollow arms cg g¹ to the hollow frame a,
which is filled with suitable filtering materials n or filtering devices for dry or
moist filtering, so that the air will leave the fan in a purified state.
Through a door d arranged in the frame a the filtering space may be cleaned
from time to time, and the filtering materials and filtering devices removed and
renewed.
It will of course be understood that the described apparatus can also be applied
to other machines which give rise to dust.

page_text: 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:
First. An apparatus for removing dust from grinding and like machines in
which the rests or supports for, the articles to be ground constitute the suction
passages put either in direct or indirect connection by a fan v, which may be
arranged on the side opposite to the rest or support upon the frame a or in any
other suitable manner, substantially as set forth.
Second. In apparatus for removing dust from grinding and like 'machines the
arrangement of holes m in the top of the rest or support for the article to be
ground, through which holes the dust settling upon the rest or support, and any
dust in the vicinity will be carried away, substantially as set forth.
Third. In apparatus for removing dust from grinding and, like machines the
arrangement of hollow armis c'g g' on the hollow frame of the machine, and the use
of such hollow frame for filtering the dust, substantially as set forth.