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Патент USA US2104925

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Jan. 11, 1938.
R. A. GOODMAN
2,104,925
BUFFING WHEEL AND PROCESS OF MAKING SAME
Filed March 14, 1956
2 Sheets-Sheet l
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ATTORNEY
Jan- 11, 1938.
R. A. GOODMAN
2,104,925
BUFFING WHEEL AND PROCESS OF MAKING SAME
Filed March 14, 1956
_2 Sheets-Sheet 2
fw., 0.o
INVENTOR
/Q/sssu Ä. 5am/MN
BY
ATTORNEY
2,104,925
Patented Jan. 11, 1938
i f UNirfl-:fo STATES PATENT OFFICE
VRussell A.„Goodman, Cleveland, Ohio
Application March 14, 1936, Serial No. 68,912
1 Claim.
The'present‘invention relates to the manufac
-ture of bufting` wheels such as used in buiiing,
polishing and coloring articles, and has as its ob
jectfa! new and improved method of making bulîs
and also an improved construction of the buff.
The usual type of buff is made from a plurality
of plies of cloth which are laid upon one another
with the threads running in varied directions and
from which are cut circular blanks with a cen
tral shaft opening. These blanks are sewed, usu
ally with a coarse spiral stitch, and- are then
ready to be mounted as units in a complete buff
the excessive thickness at the seams is avoided;
and
Fig. 10 is an edge view of the device shown in
Fig. 9.
In the manufacture of the improved buffs, a
> This method of making buffs is expensive and
are laid up in along strip on a table or bench.
wasteful, both in the manufacture of the buff and
also in operation. One of the main objections to
this form of buff is that only a portion of the
laying the material, the pieces composing the lay
. wheel can be used and the center is waste which
has a small salvage value. In the use of bufiing
20 wheels, the speedof rotation is very high and as
the buff wears away the surface speed is reduced
to a point when it is no longer profitable to use it.
To avoid this, the wheel is discarded when it is
partially worn away, with the consequent loss of
the center.
_
Other methods of making circular buffs have
been proposed and some have gone into limited
use. The method most commonly used is that
which has been described, as it has heretofore
30 been considered the most economical and efficient
method.
The present invention has for its object a
method- of making a buff which will obviate the
loss of material and will give a buif in which
substantially all of the cloth may be usefully em
ployed. It is a further object to devise a method
of making buffs by which waste will be obviated
in the manufacture of the wheel.
The accompanying drawings illustrate the
40 method which has been found to be the most sat
isfactory for the purposes specified, and while the
drawings and description are fully detailed in
order to explain the best known method and the
preferred construction, it will be understood that
45 the same are subject to modification and im
provement within the scope of the invention.
In the drawings:
Fig. 1 represents a plurality of layers of cloth
laid up for cutting and illustrating a method of
55
Fig. 6 shows a cross-section of a unit illustrat
ing a-method of `clamping the ring to a holder;
Ul
Fig. 7 is a detail on the line 'l-l of Fig. 5;
Fig. 8 is a complete wheel;
Fig. 9 is a modified form of assembly by which
plurality of plies of material, usually cotton cloth,
ing wheel.
50
illustrating the-method by which the ring is first
made roughly and then cut to form;
cutting the material;
In
ers are usually placed in such manner that the
threads in the several layers are at angles to each
other. Any number of plies l may be laid up,
the drawings illustrating twelve plies merely by
way of illustration.
In the generally accepted method of manu
facture, the material is now cut into roughly
circular disks or blanks in which a central shaft
opening is cut. This method is wasteful of ma
terial and labor. By my process, the plies are
cut into sector shaped blocks, preferably of gen
eral trapezoidal or keystone shape, along the
lines 2 and 3 in the manner illustrated in Figure
1. By arranging the blocks alternately as shown,
the waste is minimized. The size and shape of
the blocks A are determined by the size of the
finished wheel or ring and the size of the open
ing which is to be left in the center. The illus
tration of the cuts in Figure 1 is merely to show
one manner of cutting as the arrangement may
be changed and the number of blocks will vary
with the size and dimensions of the completed
ring.
The blocks 4 are preferably sewed at this time,
either longitudinally as shown at 5 in Figure 3 40
or transversely as shown at 6 in Figure 4. The
requisite number of blocks are then assembled
into polygonal form with the inclined edges in
contact.
If the edges are overlapped as shown
in Figure 5, the overlapping 'edges can be sewed
as shown at 8 in Figure 7. After the ring of
blocks is assembled its outer edge is trimmed to
circular form along the line 9 and any suitable
form of clamp or holder is attached to the center.
A metal crimping ring l0 is shown for the pur 50
Fig. 2 is a section on the line 2_2 of Fig. l;
Figs. 3 and 4_- are views illustrating the blocks or
blanks which are cut from the original cloth,
pose, but this is only illustrative.
showing two methods of stitching;
large central opening without undue waste of
material. The ring so secured is operable with 55
Fig. 5 is a buif wheel made up from the blanks
By this method of procedure, it is possible to
construct a ring-shaped buñ'ing wheel with a
2
2,104,925
out the usual waste for it is possible to so dimen
sion the parts that when the wheel shall have
worn down to its limit of usefulness, only a small
ring of fabric will be left. In addition, the buff
wheel will be cooler than the ordinary type with
a small shaft opening.
In a buiît` wheel oi say
14 inches in outside diameter, it is possible to
have a full 6-inch opening at the center. 'll‘hese
10
figures are given by Way of example only.
A number of these buiî units, which are in
dicated by the numeral l2, are usually mounted
laps accordingly. These views also illustrate an
optional form of sewing in which the entire disk
is given the usual spiral sewing. If desired outer
plies I6 may be added to either formof buff sec
tion to cover the surfaces of the section.
El
It is obvious that modiñcations and changes
may be made in the procedure of manufacture
and the construction of the ñm‘shed wheel, the
invention being characterized by the fact that
the buff wheel units are made from substantially . .4
trapezoidal or keystone shaped blocks assembled
upon a shaft I3, as shown in Figure 8, any suit-V in ring form with the large central opening giv
able form of chuck being employed for this pur
ing maximum use of the fabric and also the addi
pose. In this view the Wheel is broken away to tional cooling eiîect.
show the spacing of the disk units about the
What is claimed is:
shaft. The side plates I5 may be apertured to
A ring-shaped buiic wheel having a large cen
permit the circulation of air through the center tral opening substantially equivalent to the waste
of the wheel.
area at the center‘of a standard buif wheel, said
In orderjto avoid the thick overlap shown in ring being composed of a plurality of trapezoidal
Figure 7, where the blocks of full thickness are blocks of multi-ply fabric sewed together and
spliced, it is possible to make the individual blocks assembled with their inclined edges in over
somewhat thinner and to stagger the seams as
shown in Figures 9 and 10. This system may be
extended to any desired extent to reduce the over
lapped sewed relation and with their smaller
parallel sides defining the large central opening.
.
RUSSELL A. GOODMAN.
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