Year: 1892

page_text: Date of Application, 25th Mar., 1892
Complete Specification Left, 7th Dec., 1892-Accepted, 21st Jan., 1893
various kinds such as wire, metal rods or tubes, wooden rods, or the like and
of various sizes and any cross section, wherein the grinding or polishing is
effected by grinding or polishing material applied to the periphery of discs or
wheels of any suitable material and size, arranged to rotate in the same or approxi-
mately the same plane.
In the accompanying drawing
Fig. 1 is a side elevation ;
Fig. 2 an end elevation; and
Fig. 3 a plan of apparatus according to this invention.
The apparatus comprises a pair of grinding or polishing discs f fixed upon
shafts e mounted in frames b as shewn. The frames 6 are arranged to slide in
suitable guides b¹ fixed upon a bed plate a so that they can be moved nearer to or
further away from each other during the working of the apparatus. This sliding
motion may be effected by means of thumb screws has shewn, which are suitable
for use in small apparatus such as employed by gold workers; but in the case of
larger apparatus the sliding motion may be effected by means of screw threaded
spindles provided with hand wheels similar to those employed in rolling mills.
Upon each shaft c is fixed a belt pulley e by means of which the shaft c and con-
sequently the discs or wheels f (hereinafter called wheels) fixed thereon can be
rotated from a driving shaft.
Upon the base plate a between the frames b are mounted supports g which at the
level of the shafts c carry bearings i that serve for holding the articles to be ground
or polished. The supports g are capable of being adjusted laterally to and from
each other and may be so arranged that they can be inclined towards each other
and towards the discs f.
The bearings i may also be so mounted that they can be freely moved in any
direction.
The frames b, and also the guide supports g are or may be provided with suitable
devices such as thumb screws by means of which they can be fixed in any desired
position.
The wheels fare composed of suitable material such as wood or felt, and the
grinding or polishing material is applied to their peripheries.
The articles to be ground or polished is passed through the bearings of the
guide supports y and thus are brought between the wheels which are then brought
as close to each other as is requisite, whereupon the shafts care caused to rotate.
The article to be treated, which is held on one side of the bearing by the work-
man, can by reason of the ready movability of this bearing be continually rotated
and turned in such a manner that all the surfaces to be ground or polished can
be subjected to various degrees of pressure and for various periods, to the action
of the grinding or polishing wheels.
Fig. 4 illustrates a special construction of grinding or polishing wheel consisting
of two concentric rings m and l, connected together by spiral springs n the
polishing material being applied to the outer ring. By this construction the outer
portion of the wheel is rendered elastic by means of the springs n, so that it will
readily accommodate itself to irregularities in the surface of the article being
[Prce 8d1

page_text: operated upon. Each of the wheels fin the apparatus may be constructed as just
described, or only one of them.
By driving the belt pulleys e direct from the main shafting, the wheels f can be
rotated at a very high speed so that the grinding or polishing operation can be
effected in a rapid and efficient manner.
Dated this 25th dow of March 1902
E. POST,
By L. W., per F. B.
COMPLETE SPECIFICATION.
Improvements in Grinding or Polishing Apparatus.
I, EUGEN POST of Ehrenfeld-Koln, Germany, Manufacturer, do hereby declare
the nature of this invention and in what manuer the same is to be performed to be
particularly described and ascertained in and by the following statement :-
This invention relates to apparatus for grinding and polishing articles of various
kinds, such as wire, metal rods or tubes, wooden rods, or the like and of various
sizes and any cross section, wherein the grinding or polishing is effected by
grinding or polishing material applied to the periphery of discs or wheels of any
suitable material and size, arranged to rotate in the same or approximately the same
plane.
Referring to the drawings filed with my Provisional Specification,
Fig. 1 is a side elevation ;
Fig. 2 an end elevation; and
Fig. 3 a plan of apparatus according to this invention.
The apparatus comprises a pair of grinding or polishing discs of fixed upon
shafts c mounted in frames as shown. The frames are arranged to slide in
suitable guides & fixed upon a bed plate a so that they can be moved nearer to or
further away from each other during the working of the apparatus. This sliding
motion may be effected by means of thumb screws has shewn, which are suitable
for use in small apparatus such as employed by gold workers; but in the case of
larger apparatus the sliding motion may be effected by means of screw threaded
spindles provided with hand wheels similar to those employed in rolling mills, as
well understood.
Upon each shaft c is fixed a belt pulley e by means of which the shaft c and con-
sequently the disc or wheel ƒ (hereinafter called wheels) fixed thereon can be
rotated from a driving shaft.
Upon the base plate a between the frames 6 are mounted supports g which at the
level of the shafts c carry bearings i that serve for holding the articles to be ground
or polished. The supports are capable of being adjusted laterally to and from
each other.
The bearings i may be so mounted that they can be freely moved in any
direction.
The frames b, and also the guide supports are or may be provided with suitable
devices such as thumb screws by means of which they can be fixed in any desired
position.
The wheels are composed of suitable material such as wood or felt, and the
grinding or polishing material is applied to their peripheries.
The article to be ground or polished is passed through the bearings i of the guide
supports 9 and is thus brought between the wheels which are then brought as
close to each other as is requisite, whereupon the shafts c are caused to rotate. The
article to be treated, is held on one side of the bearing i by the workman, and can
be continually rotated and turned in such a manner that all the surfaces to be
ground or polished can be subjected to various degrees of pressure and for various
periods, to the action of the grinding or polishing wheels.
Fig. 4 illustrates a special construction of grinding or polishing wheel consisting

page_text: of two concentric rings m and I, connected together by spiral springs n, the polishing
material being applied to the outer ring. By this construction the outer portion
of the wheel is rendered elastic so that it will readily accommodate itself to
irregularities in the surface of the article being operated upon. Each of the
wheels fin the apparatus may be constructed as just described, or only one of
them.
By driving the belt pulleys e direct from the main shafting, the wheels can be
rotated at a very high speed so as to effect the grinding or polishing in a rapid and
efficient manner.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. Apparatus for grinding and polishing articles such as wire, metal rods or
tubes, and wooden rods, comprising grinding or polishing discs or wheels arranged
to rotate in the same or approximately the same plane and between which discs or
wheels the article to be operated on is placed in such a manner as to be capable of
movement in various directions during the working of the apparatus, substantially
as described.
2. In apparatus of the kind referred to in Claim 1, mounting the polishing
discs fin bearings in frames 6 that can be brought nearer to or moved further away
from one another by suitable means and providing bearings i for the articles to be
operated on these bearings being arranged in guide supports 9 capable of being
moved in a horizontal plane in such a manner as to enable the position of the
article operated on to be altered in any desired direction substantially as described.
3. A grinding or polishing disc or wheel comprising two concentric rings m and l,
the inner one of which is mounted on the shaft, and the outer one of which
carries the polishing or grinding material, the two rings being connected together
by spiral springs n in such a manner that the outer ring is rendered elastic so that
it can yield to the unevenness of the article to be treated substantially as
described.
4. My improved grinding or polishing apparatus constructed arranged and
operating substantially as described and shown.
Dated this 7th day of December 1892.
EUGEN FUNT,
By L. W., per F. B.