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Патент USA US2130409

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Sept. 20, 1938.
P. G. AULSON
ABRADING ROLLER
Filed Jan. 16, 1937
1'. 6.
2,130,409
Patented Sept. 20, 1938
2,130,409
UNITED STATES PATENT OFFICE
2,130,409
ABRADING ROLLER
Philip G. Aulson, Salem, Mass, assignor to The
Aulson Tanning Machinery Company, Salem,
Mass., a corporation of Massachusetts
Application January 16, 1937, Serial No. 120,854
2 Claims. (Cl. 51—194)
This invention relates to abrading rollers for
use in various types of machines which are
adapted for use in producing smooth surfaces on
various materials as for instance, hides and
5 leathers.
The main object of the invention is the provi
sion of means for attaching the abrading sheet
to the surfacing roller in such manner that when
in use it will ?rmly contact with the entire pe
ripheral wall of said roller and be so locked
thereto that all slipping of said sheet thereon
will be effectually prevented.
Another object of the invention is the providing
1
sheet to be used in connection with the modi?ed 01
form of roller shown in Fig. '7, this ?gure being
drawn to a reduced scale.
Similar characters indicate like parts through
out the several ?gures of the drawing.
In the drawing, I0 is a revoluble shaft having 1O
mounted thereon a hollow metallic cylinder II.
This cylinder II has two peripheral slots l2
extending therethrough and preferably in aline
of simple means whereby the sheet may be de
tached readily from the roller when it is desired
merit as shown in Fig. 1.
Between the inner ends of these slots I2 is an
to position another sheet thereon.
ear l3 extending inwardly from the inner wall
of the cylinder II.
These objects are attained by the mechanism
shown in the accompanying drawing.
For the purpose of illustrating the invention
two preferred forms thereof are illustrated in the
drawing, these forms having been found to give
satisfactory and reliable results, although it is to
be understood that the various instrumentalities
of which the invention consists can be variously
25 arranged and organized, and the invention is not
limited to the precise arrangement and organiza
tion. of these instrumentalities as herein shown
and described except as required by the scope of
the appended claims.
30
Of the drawing»
Figure 1 represents an elevation of an abrading
roller embodying the principles of the present
invention with the abrading sheet omitted.
Figure 2 represents an end View of the same.v
35
Figure 3 represents an enlarged sectional detail
on line 3, 3 on Fig. 1, and showing the abrading .
sheet secured to the periphery of the roller.
Figure 4 represents a diagrammatical view of
the sheet tightening shafts with an intermediate
40 supporting ear and other ears at the opposite ends
of the roller associated with clamping means to
independently lock each of the shafts in adjusted
position.
Figure 5 represents an enlarged sectional de
tail of one of the end ears and the means for
clamping the winding shaft in adjusted position.
Figure 6 represents a plan of a sheet of abrad
ing material to be used on said roller, this ?gure
being drawn to a reduced scale.
Figure ‘7 represents an elevation of a modi?ed
form of roller in which the sheet winding shafts
are out of alinement and parallel to each other.
Figure 8 represents an enlarged sectional de
tail on line 8, 8 on Fig. '7.
55
sheet winding shafts tobe used in the modi?ed
form of roller with its supports at opposite ends
thereof, and
Figure 10 represents a special form of abrading
Figure 9 represents a diagram ‘of one of the
The cylinder l I also has extending inwardly
from its inner wall and at its opposite ends ears
lél, which ears have notches l5 formed therein.
The notches i5 have a width equal to the diam
eter of a shaft l6 adapted to be disposed at one
end in the notch 15 of an ear 14, said shaft I6
being retained in said notch l5 by means of a
25
transverse pin ll extending across said notch.
The opposite end of this shaft I6‘ is disposed
in a cylindrical hole in the intermediate ear 13,
said ear l3 forming a lose bearing or support for
the inner ends of both shafts I6.
Each shaft I6 is provided near its outer end 30
with a ?ange I8 bearing against the inner wall of
an ear [4.
Each shaft I6 is provided outside of the flange
[8 with a thread IS on which is mounted a
revoluble clamping nut 20.
35
Extending into the outer end of each shaft I6
is a ?at-sided socket 2i adapted to receive a
wrench by which the shaft 16 may be rotated.
When the shaft I6 has been rotated su?iciently
it may be locked in its adjusted position by turn 40
ing the nut 20 on the thread l9 causing the ?ange
E8 to impinge upon the inner face of the ear I4.
Each shaft I6 is provided with a longitudinal
slot 22 between the ears l3 and I4.
Preferably the metallic cylinder is covered by 45
a layer of yielding material 23, this material hav
ing slots 24 therein registering with the periph
eral slots I2 in the metallic cylinder II.
A special form of abrading sheet 25 is used in
connection as shown in Fig. 6.
The opposite ends of this sheet 25 are bifur
50
cated leaving two projecting portions 26 to be
inserted through the slots 24 of layer 23, the slots
12 in the cylinder H and the slots 22 in the
shaft I6.
55
2,130,409
When the projecting portions I6 have been
thus inserted through the slots I2, 22 and 24 as
‘shown in Fig. 3, the shaft I6 may be rotated
about its axis drawing the abrading sheet 25
tightly against the periphery of the roller and
p then locked ?rmly in its adjusted position by
means of the clamping nut 20.
The peripheral slots I2 are preferably formed
in the cylinder I I diagonally to the rotating shaft
10 I0 of the cylinder II.
Heretofore, short metal cylinders of this char
acter with a single diagonally disposed periph
eral slot therein have been used but when longer
cylinders have been used it has been found that
15 the abrading sheet 25 will bulge in the center of
the roller and will not be held ?rmly against
the periphery of said roller.
Obviously, this is very objectionable and this
objection has been overcome by providing the
20 intermediate ear [3 extending inwardly from the
inner wall of the cylinder and forming a loose
bearing or support for the abutting ends of two
separate rotatable shafts I6 which may be ro
tated independently of each other with the pro
25 jecting portions 26 of the abrading sheet 25 in
serted therein.
,
By tightening this abrading sheet 25 in this
manner and by utilizing two separate shafts l6,
the entire surface of the abrading sheet 25 is
30 held taut in contact with the peripheral wall
of the cylinder II or the yielding covering 23
surrounding said cylinder II.
By making
the abrading
35 contact with
of the length
the rollers in the manner described
sheet 25 may be retained ?rmly in
the roller at all points regardless
of said roller.
If V desired, the peripheral slots l2 in the cyl
inder I I may be out of alinement with each other
but must be parallel with each other, as shown
40 in Fig. 7.
In this modi?ed form of roller two interme
diate ears I3 are used each having a cylindrical
hole therethrough to form a loose bearing or sup
port for the inner end of one of the slotted
shafts I6.
One long projection 28 at one end of the sheet
21 and the shorter projection 28 at the opposite
end of the sheet are inserted through the slot
22 of one shaft I6, and the other pair of pro
jections 28 are inserted through the slot 22 of
the other shaft I6 in the manner hereinbefore
described.
Superior results are obtained by mounting the
abrading sheets 25, 21 on the rollers in the man
ner described and this is particularly true when 10
the rollers have considerable length as they must
have in some types of machines.
It is believed that the operation and many ad
vantages of the invention will be understood
without further description.
15
Having thus described my invention, I claim:
1. An abrading roller having a hollow cylin
drical metallic body provided with-two diago
nally disposed peripheral slots extending toward
each other from opposite ends thereof, said slots 20
being parallel to and out of alinement with each
other; an ear extending inwardly from the inner
wall of said cylindrical body intermediate the
ends thereof and at the inner end of each slot;
ears at the opposite ends of said body extending 25
inwardly and radially from the inner wall there
of; a slotted shaft rotatable in each end ear and
one of said intermediate ears; an abrading sheet
having at each end two projecting portions for
insertion one in each peripheral slot and the 30
slot of a rotatable shaft; means for rotating each
slotted shaft; and means for locking each slotted
shaft in adjusted position.
2. An abrading roller having a hollow cylin
drical metallic body provided with two peripheral 35
slots extending toward each other from opposite
ends thereof, said slots being parallel to and out
of alinement with each other; an ear extending
inwardly from the inner wall of said cylindrical
body intermediate the ends thereof and at the
inner end of each slot; ears at the opposite ends
of said body extending inwardly and radially
from the inner wall thereof; a slotted shaft ro
tatable in each end ear and an intermediate car;
an abrading sheet having at each end two pro
When the peripheral slots I2 are out of aline
ment, it is necessary to use a specially formed
sheet 21 of abrading material, such as is shown
jecting portions of different lengths for insertion
in Fig. 10.
This sheet 21 is bifurcated at both ends leav
shaft; and means for locking each slotted shaft
in adjusted position.
50
ing two projections 28 at opposite ends thereof,
one projection at each end being longer than the
other projection at that end.
one pair in each peripheral slot and the slot of
a rotatable shaft; means for rotating each slotted
PHILIP G. AULSON.
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