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Патент USA US2408504

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R. A.,YouNG _
Fuad lay 24, V1944
Patented Oct. 1, 1946
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Ray Alden Young, Willoughby, Ohio
Application May 24, 1944, serial No. 537,151 ` s olaims.
This invention relates to arbors, mandrels and
similar tools.
The primary object of the invention is to pro
I small pin I5 projectíng outwardly therefrom ad
jacent to the head and neck members II and III.
The tapered shank I0' is designed to ?t into a
regular collet chuck.
vide a device of the type named which will quickly
The cage member 20 is a tubular element which
and easily engage and ?rmly retain an object to 5
has three large slots oropenings 2 I therein, which
are parallel to each other and evenly spaced
Another object is to provide a simple holder
around its side. One end of the cage member 20
that is relatively inexpensive to manufacture and
is provided with a peripheral flange 22. A small
assemble and which is relatively simple and easy
to use by inexperienced persons.
IO slot 23 is cut into the cage member 20 and .the
?ange 22 as shown in the Figures Sand 6.
A further object is to provide a device which
The expansible sleeve member is a tubular ele
grips or engages the Work uniformly around an
Vrnent 25 which has a longitudinal slit 21 therein
inside surface and which does not change the aXis
which permits it to expand or contract as de
' around which it rotates regardless of whether it
be rotated or machined.
is closed or open.
These and other objects will become apparent
from a reading of the following speci?cation and
claims in connection with the accompanying
drawing in which like parts are referred to and
indicated by like reference characters and 20
projecting therefrom as shown in the Figure 6.
Figure 1 is a side elevation, with parts broken
away, of an arbor embodying this invention;
One of its edges has a small tongue 26
The roller members may be ball or cylinder
bearings 30 which ?t in
cage member and which
slightly larger than the
member itself.
When assembled, the
the opening 2I of the
have outside diameters
thickness of the cage
cage member ?ts over
the head portion II, with the ?ange 22 adjacent
to the neck portion I4 and so that the pin l5
Figure 2 is a vertical cross sectional view of
the arbor taken along the line and in the direc 25 rests in the slot 23 in line with the tubular por
.tion 20 of the cage member. A small spiral spring
tíon of the arrows 2-2 of the Figure 1;
I8 is also mounted aroundv the neck portion III
Figure 3 is an enlarged sectional view of a part
with one end thereof engaging the pin l5 and the
of the arbor showing the relationship of the parts
other end engaging the slot 23 of the cage mem
when the clutch is closed;
Figure 4 is a view similar lto that of Figure 3 30 ber. This spring I8 has a tendency therefore to
>keep the pin l5 toward one side of the slot 23
but showing the clutch open;
as indicated in the Figure 2.
Figure 5 is a View of a part of the device taken
The pins or bearings 30 are then placed in the
along the line and in the direction Iof the arrows
openings 2I of the cage member and the split
5-5 of the Figure 6; and
.i sleeve 25 is then placed over the cage, roller and
Figure 6 is an exploded view of the arbor.
head members, with the tab 26 ?tting in the
Referring to the drawing, there is shown an
portion of the slot 23 that is aligned with the
arbor having a body portion, a cage member,
flange 22, as shown in the Figure >2. The afore
roller members, a split sleeve, a means for re
said members are then retained in position and in
Itaining these elements in assembled relation and
the assembled condition by the washer 35 and
a means for limiting the movement of certain
the screw 38 which passes through the hole 36
parts thereof. Each of these parts and means
of the washer and ?rmly engages the threaded
Will be described in detail and in the order just
hole IG of the head member.
set forth.
When used, the work to be ?nished is placed
The body portion of the arbor consists of a
over the split sleeve 25 when it is in the contracted
tapered shank l0, a somewhat thickened portion
position or the position shown in the Figure 3.
referred to and indicated as the collar l3, and a
The body portion of the arbor is then turned in
head portion II. The portion of the body be
the direction opposite to that in which the work is
tween the collar 13 and the head I I is somewhat
to rotate, and the rollers 30 are then caused to
constrictedvand is referred to .and indicated as
move on the flat surfaces I2 of the head member
the neck M. The head member Il is cylindrical
and toward the round'ed surfaces thereof. When
in shape and has three chordal flat surfaces I2
evenly spaced therearound. The head member
this occurs, the pins rise and expand the split
I I also has a small longitudinally eX-tending hole
sleeve 25 so that its outer surface tightly con
tacts and grips the work placed therearound.
38 hereinafter referred to. The collar 13 has a 55 The Figure 4 clearly shows the expanded condi
' l6 therein which is threaded to receive the screw
tion of the arbor and the relative position of the
parts When gripping or engaging certain work.
Having thus described this invention in its
preferred form, it is to be understood that the
a shouider, a head attached thereto and a cage
having a notch therein mounted thereon, a stop
means, comprising, a pin mounted on the shoulder
embodiment thereof as illustrated is not to be
cage in a manner limiting the rotation thereof, an
expansible sleeve mounted on .the cage and having
considered in a limiting or restricted sense as
adjacent to the head and engageable with the
a. tab thereon engageable With the aforesaid
there may be many other forms or modifications
notch adjacent to the said pin, and a spring
of the invention Which may also be considered to
mounted inside the sleeve and engaging the said
come Within the scope of the appended claims.
I claim:
IU pin and the aforesaid cage.
3. A clutch type arbor, comprising in \combina
1. In a clutch type arbor of the type including
tion, a body member including a collar portion
a shoulder, a head attached thereto and a cage
and a head portion, the said collar portion hav
having a notch therein mounted thereon, a stop
ing a pin thereon contiguous to the head por
means, comprising, a pin mounted on the shoulder
adjacent to the head and engageable With the ca-ge
tion, a rotatable cage member surrounding the
in a manner limíting the rotation thereof, and
an expansible sleeve mounted on the sage and
head member and including a rolier member en
having a tab thereon engageable with the afore
said notch .adjacent to the said pin.
I 2. In a clutch type arbor of the type including 20
gageable With the head portion, .the said cage
member having a notch thereín receiving the pin
and restricting rotation on the head member.
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