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Патент USA US2121925

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June 28, 1938.
'
>
M. K. IO'CZKO
‘
2,121,925 2
UNHAIRIN G F0
. LL
Filed Jan. 24, 1938
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JZIKTOczko
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1N VEN TOR.
By
ATTORNEYS.
Patented June 28, 1938
2,121,925 '
, UNITED STATES
PATENT OFFICE’
2,121,925 '
UNHAIRING ROLL
_ Marion Keith Oczko, Johnstown, N. Y.
Application January 24, 1938, Serial No. 186,685
3 Claims.
This invention relatesto an unhairing roll for
use in connection with unhairing machines such
as employed for removing hair from hides used
in the tanning industry.
'
‘ An object of the invention is to provide a du
rable roll having ?exiblespirally arranged blades
joined to'the roll ina new and novel manner, the
said blades being so pitched as to discard the re
moved hair past the two ends of the roll.v
A further object is 'to provide an ‘unhairing
I 10
roll which is'of increased 'e?iciency and has no
tendency to injure the hide under treatment.
.With the foregoing and other objects in view
which will appear as the description proceeds, the
“ ‘15
invention consists of certain novel details of con
struction and combinations of parts hereinafter
more fully described and pointed out in the
claims, it being- understood that changes may be
made in the construction and arrangement of
'20 parts without departing from the spirit of the
invention as claimed.
‘
In the accompanying drawing‘ the preferred
form of the invention has been shown.
5'
25
'
face of the cylinder.
15
I
It is to be understood that the ribs of each se
ries are equally spaced apart and it has been
found in practice that the angle of the advancing
surface of each rib'should be pitched approxi
mately thirty degrees to produce the most de 20
sirable results.
While it is preferred to use ?exible rubberin
the construction of the ribs, it is to be under
erence l ‘designates the shaft of an unhairing
machine onvwhich is mounted a roll or cylinder
in the outer or peripheral portion of which are
provided spiral grooves 3 formed in opposed se
ries extending inwardly from the respective ends
of vthe rolls, the grooves of the .two series merg
ing adjacent to the center of the roll and the
grooves of each series being pitched oppositely
40 to those of the opposed series.
25.
I
What is claimed is:
1. An unhairing roll including a cylinder hav
ing grooves in the periphery thereof, blades an
- chored in the grooves and projecting from the
'
Referring to the ?gures by characters of ref
‘ 2 formed of cast iron or other‘ suitable material
'
‘Seated in each groove is a blade 4 preferably
of steel which is extended throughout the length
of the groove and follows the contour thereof,
» each blade being fastened securely in'the groove
by a caulking strip 5 preferably of steel.
That portion of each blade 4 which is located
outside of the groove 3 is seated within and vul
canized or otherwise joined to a rib 6 formed of
rubber and as these ribs are of the same length,
50 as the blades and grooves, they will abut adjacent
to the center of the ‘roll as shown, for example,
at 1 in Figure 1. The advancing faces of the ribs
are inclined as indicated at 8 so as thus to con
‘ verge outwardly toward the opposite or follow
‘ 55
toward the ends of the cylinder or roll so that
it will thus be quickly disposedof and not remain 10
where it will clog or otherwise interfere with
the proper functioning of the device.
Not only are the rubber ribs vulcanized to the
blades 4 but they are also vulcanized to the sur
stood that hard rubber may be used under some
through the roll.
“45
of the ‘hide. As’ the opposed series of ribs are
oppositely positioned,‘ said ribs can, during the
rotation of the cylinder, direct the loosened hair
conditions.
Figure 2 is an enlarged transverse section
a
rotates. As these ribs are formed of rubber they
will frictionally engage the hair and beat it off »
In said drawing ‘
being broken away.
‘
side of the hide to be treated’ being positioned
Where the surface thereof will be touched by the
outer edge portions of the ribs as the cylinder
Figure 1 is an elevation of a roll embodying
the present improvements, portions of the shaft
'30
(01. 149-16)
cylinder, and rubber ribs vulcanized on the 30
‘
2. An unhairing roll including a cylinder hav
ing opposed series of grooves in the periphery
thereof, the grooves of each series being pitched
oppositely to the grooves of the opposed series 35
‘ blades and cylinder.
and the grooves of the said series merging ad
jacent to the center of the cylinder, blades seated
within the respective grooves and extending
throughout the length thereof, means for an
choring the blades in the grooves, and resilient 40
ribs vulcanized on the blades and on the face
of the cylinder, said ribs following the contours
of the grooves and abutting adjacent to the cen
ter of the roll.
,
3. An unhairing roll including a cylinder hav 45
ing opposed series of grooves in the periphery
thereof and extending from the respective ends
of the cylinder to points adjacent the center
thereof, the grooves of each series being pitched
oppositely to the grooves‘ of the opposed series 50
and merging at points adjacent to the center of
the cylinder, blades seated within the respective
grooves and projecting from the cylinder, means
for anchoring the blades in the cylinder, each of
ing faces of the ribs which, as indicated at 9,
said blades being extended throughout the length 55
cylinder. Each ‘rib bears ?rmly upon the surface
rib vulcanized on each blade and upon the cylin
j are‘disposed substantially radially relative to the . of the groove in which it is seated, and a rubber
of the cylinder.
‘
so
In practice the cylinder is rotated in the direc
tion indicated by the arrow in Figure 2, the hair
der, said ribs following the contours of the‘
grooves and having inclined advancing faces.
MARIO-N KEITH OCZKQ.
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