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Патент USA US2403417

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July 2, 1946.
Filed Oct. 11, 1943
4517 ?“
15;“ C757151190
Patented July 2, 1946
Christopher Van Deventer, Knoxville, Tenn, as
signor to National Plastics, Inc., Knoxville,
a corporation of Tennessee
Application October 11, 1943, Serial No. 505,756
5 Claims. ’ (Cl. 242-120)
The present invention relates to bobbins, quills
and the like for use in spinning and weaving. In
describing the present invention I use the term
“bobbin” in a broad sense to refer to bobbins and
similar devices, whatever they are named, as
used in spinning and weaving in a textile indus
Figure 8 is a sectional view taken on the line
8-8 of Figure 3.
Referring now in detail to the drawing, the
showing in Figure 1 is of a standard known form
of bobbin H) which has a mounting base I I there
on. These bobbins are hollow as indicated and
are generally constructed of wood. In use the
wood ?bers at the tip l2 of the bobbin wear away
bobbin 9, more useful and longelived part of the
quite rapidly and the ?ne splinters that come o?
spinning and weaving machinery. According to
present practice the bobbins are made generally 10 the tip catch the thread and thus interfere with
uniformity of weave and spin. The amount ofv
of wood and the wood, under use, becomes rough
material worn oil’ has been indicated roughly by
due to the grain thereof and then ?ne splinters
the dotted lines at IS in Figure 1 so that it is ap
are worn off of the bobbin and catch in the
parent that the utility of the bobbin i0 is seri
thread and interfere with the uniformity of
weave and spin. Moreover the continuous wear 15 ously impaired by’this reduction in length. Fur,
thermore, the amount of material in the form of
ing away of the splinters soon reduces the length
?ne splinters that has been ground away to pro
of the bobbin because the wearing away takes
vide a hazard to the thread is quite substantial.
place at the most rapid rate at the tip of the
In accordance with my invention I may take
20 the worn bobbin I 0 and restore it to its original
According .to the present invention I propose
length and serviceability. in fact to a greater
to prepare the bobbin so that it is less apt to
try. The present invention is particularly di
rected to providing means whereby to make the
splinter due to wear.
serviceability, by turning down the tip portion
thereof to provide a shoulder it with a reduced
Also, in accordance with my invention, I pro
tip i5 as shown in Figure 3. Desirably this re
vide the tip of thebobbin with adequate addi 25 duced
tip is also provided with an annular groove
tional wear resistance to eliminate danger of the
order to restore the length of the bobbin
tip being'worn out faster than the rest of the
I provide a shell 51 of plastic material which is
bobbin. The invention is applicable to old bob
molded from a suitable plastic compound into
bins as a means of restoring them to a condition
the shape indicated in Figure 3, that is, substan
equivalent to new, and may be also applied to 30 tially cup-shape, with an opening 48 in the base
bobbins before they have ever been used.
that is substantially the same diameter as the in
The features and advantages of the present I terior opening of the bobbin at the tip.
invention will appear more fully as the descrip
The shell is provided with at least one annu
tion proceeds, reference being made to 'the ac
lar rib ill on the interior thereof, which rib is
companying drawing wherein a preferred form
adapted to engage the groove It provided on the
of the invention is shown. It is to be understood
reduced part l5 of the bobbin. One or more
however that the drawing and description are il
splines 20 on the inner surface of the shell will
lustrative only and are not to be taken as limit
prevent it from turning on the tip i5. I do not
ing the invention except insofar as it is limited
limit myself to this speci?c fastening as I may
‘ by the claims.
In the drawing:
cement or bond the shell to the tip or crimp the
shell material into the quill tip. For the pur
pose of making the tip shells I1 I may use ther
mosetting plastic compounds such as phenols
Figure 1 is a view in side elevation of a known
wooden bobbin which has become badly worn due
to the tip'thereoi’ splintering o?;
Figure 215 a side elevation illustrating the. bob
bin restored in accordance with the present in
Figure 3 is an enlarged fragmentary sectional
view taken on the line 3—-3 of Figure 2;
Figures 4, 5, 6 and '7 illustrate a series of bob
bins with the tips thereof distinctively colored
according to the present invention for identify
. ing the twist or other characteristics of thread
used in spinning and weaving; and
and urea compounds or I may use theremoplas
tic materials such as acetates.
The material,
whether thermosetting 0r thermoplastic, must be
such that it will readily take color and will not
be easily worn by continuous engagement with
50 the thread. The shell tip I‘! is desirably fastened
with a suitable adhesive in addition to the hold
ing e?’ort exerted by the rib l9 and the groove
l6. If the right type of plastic composition is
used additional holding can be obtained by using
a pointed punch and forcing the plastic material
into the reduced wooden tip l5.
The shell tip I1 is of course made of such di
ameter that its exterior diameter is equal to or
slightly less than the diameter of the tip at the
shoulder ll.
As a further means of protecting 4
the bobbin against deterioration I prefer to treat
bobbin. Furthermore. if a tip happens to come
loose repair can be made by replacing the tip
without the loss of the entire bobbin.
From the foregoing description it is believed
that the construction and operation of the present
invention will be readily apparent to those
the bobbin with a plastic composition in such
skilled in this art.
way as to thoroughly impregnate the wood from
Having thus described my invention, what I
the inside out. This reduces the splintering not
claim as new and desire to secure by Letters
only at the tip but throughout the body of the
bobbin. In order to impregnate the bobbin I 10 Patent
1. A bobbin for use in spinning and weaving,
preferably apply the plastic in ?uid condition
having a wood body and a tip thereof compris
either to the interior or the exterior under pres-i
ing a plastic shell covering the end of the bobbin
sure. Then I establish a vacuum on the exterior
and adhered thereto, the bobbin body having a
of the bobbin if the material is applied to the in
reduced end fitting in the shell, the reduced end
terior thereof so as to cause the fluid plastic ma
having a recess in its periphery and the shell
terial to be forced through the air cells in the
having a projection extending into the recess.
wood without breaking up the cell structure. In
2. A bobbin for use in spinning and weaving,
other words the liquid plastic material is ‘caused
having a wood body and a tip therefor compris
to penetrate into the wood in much the same
ing a plastic shell covering the end of the bobbin
manner as water wets the wood, the pressure on 20 and adhered thereto, the bobbin body having a
one side and the vacuum on the other side being
reduced end ?tting in the shell, the reduced end
the means for speeding up the process of soaking
having a recess in its periphery and the shell
the wood with the plastic material. When the
having a projection extending into the recess,
bobbins are being made new it is advantageous to
the recess and projection being annular about
utilize a plastic material which is similar in char 25
the end and tip.
acteristics to the material of which the tips are
3. A bobbin for use in spinning and weaving,
made and to apply the tips in such a way as to
having a wood body and tip therefor compris
take advantage of the plastic material impreg
ing a shell of thermosetting plastic composition
nated in the wood to adhere the tip to the re
covering the end of the bobbin and adhered
duced end ii of the bobbin.
thereto, the shell having projecting members ex
Referring now to Figures 4 to 7, inclusive, I
tending into the wooden body to prevent rota.
have illustrated in these figures several separate
tion and removal of the shell. bobbins, the tips of which are lined to indicate
4. A bobbin for use in spinning and weaving.
different colors. For example, the tip in Figure
having a wood body and a tip therefor compris
4 is red, the tip in Figure 5 is blue, the tip in 35 ing a plastic shell covering the end of the bobbin
Figure 6 is green and the tip in Figure '1 is yellow.
and adhered thereto, the body itself being im
These indications show how the plastic shell tip
with a plastic composition.
I‘! may be distinctively colored so as to identify
5. A bobbin for use in spinning and weaving,
certain characteristics of the thread thereon
throughout a spinning or weaving .process. It is 40 having a wood body and a tip therefor compris
ing a plastic shell covering the end of the bobbin
possible to carry the idea to the spindles as well
and adhered thereto, the plastic shell being
as the bobbins so that a certain twist may be
rounded, the body having a reduced end to enter
followed from the spindles through the weaving
the shell and having a shoulder abutting the
mechanism into the cloth. It is essential of 45 end of the shell and of an exterior diameter as
course that the coloring be a part of the shell
large as the exterior shell diameter where they
itself and not a mere coating thereon because of
meet, the body of the bobbin being impregnated
the wear to which the tip of the bobbin is sub
with a plastic composition of the same nature as
jected. The coating would soon be destroyed,
but owing to the nature of the plastic tip H the 50 the shell.
coloring of the tips will last as long as the tips
themselves and they- will last as long as the
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