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Патент USA US2121541

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June 21, 1938.
~1.. s. HENWOOD
um'nonron MANUFACTURING PEN POINTS
Filed Feb‘. 4, 19:55
2,121,541 v
2,121,541
Patented June 21, 1938
_ UNITED STATES PATENT OFFICE '
' 2,121,541
METHOD Foa MANUFACTURING 'PEN
rom'rs
Lloyd S. Henwood, Merchantville, N. J., assignor
to 0. Howard Hunt Pen Company, Camden,
N. J., a corporation of New Jersey
Application February 4, 1935, “Serial No. 4,813
3 Claims. (oi. 113-32)
This invention relates to the method of manu
facturing pen points.
'
.
better flow of ink is provided in this way. This
is especially true of fountain pens in which the
ink is fed from a reservoir in the barrel of the
Among the more important objects of the in
pen to the nib portion and from thence through vention are the provision of ~an improved pen the slit or slot to the writing tip. At the same
point
or
nib;
the
provision
of
a
pen
point
which
5
is highly effective in feeding ink to the writing time it is also of advantage that the extreme
tip; and 'a material simpli?cation of the process writing tips at opposite sides of the slot should
of manufacturing pen points of the type here be in contact with each other and thus make
possible the writing of ?ne lines. .
lo
involved, as will be more fully brought out here
Heretofore, with a view to accomplishing the
10 inafter.
above,
pens
have
frequently
been
subjected
to
a
How the foregoing, together with other ob
slotting or “sawing” operation in accordance
jects and advantages which will occur to those
with which a very thin abrasive wheel is em
skilled in the art, are obtained, will appear to
to cutout a small amount of metal and
better advantage after a consideration of the ployed
thus produce a slot extending from the writing
following
description
making
reference
to
the
15
tip to the pierce hole. This prior type of opera
accompanying drawing, in which'
tion is troublesome and expensive since it re
Figure 1 is a bottom plan view of a pen point quires very careful and accurate handling and
blank at one stage during its production;
also necessitates the use of delicate cutting tools.
Figure 2 is a view similar to Figure 1 but illus
The pen of this invention, however, is some 20
trating a blank at a succeeding stage;
what different in form. A blank such as shown
Figure 3 is a top plan view of a pen completed in Figure 1 is provided with a slit l2, as by a
in accordance with this invention;
shearing operation, and subsequent to this the
Figure 4 is a sectional view taken as indicated‘ ‘ slit is opened up to form a slot, shown at l2’ in
by vthe section line 4-6 of Figure 1;
Figures 5 and 6 are sectional views taken as
Figure 2, by placing the blank between a pair of 25
tool or die members 13 and “I. Die member l3
may conveniently take the form of a ?at “anvil”,
and the member “I has an elongated working sur
die members employed in making the pens; and face extending from the region of the pierce hole
Figure '7 is a sectional view taken as indicated‘ ll rearwardly to the heel of the pen. When 30
30 _by the line 1-1 of Figure 2.
the die members come together, the metal of the
As the material from which my improved pens pen blank therebetween is swaged or pressed
are made. I prefer to employ sheet metal stock, thinner in'the central region. 15, as shown in Fig
' preferably formed of a chromium-nickel steel al
ure 2. This causes the side portions of the pen
loy such as the so-called “stainless steel”. Pen blank to separate slightly and thus opens up the
blanks
of
the
general
shape
appearing
in
Figures
35
slit I! of Figure 1 to form the slot l2’ of Figure 2.
l and 2 are stamped from the sheet metal stock,
I contemplate that the tool member l4 may be
each blankhaving a heel part 8 and a nib part 9. of uniform width throughout its working edge
At the writing tip of the nib I prefer also to pro
so as to produce a slot of uniform width from
vide small tabs III which are bent (see Figures the pierce hole to the tip. I In this case the tips 40
1,
4
and
'7)
downwardly
to
lie
in
approximate
40
of the pen may be brought into contact with each
indicated by the lines ,5—-5 and 6_—6 of Figure
2; these views also showing, in section, certain
parallelism in planes generally perpendicular to
the plane of the blank. These tabs form the writ
other by pressing them together, for example,
during the “raising” operation which gives the
ing tip. Each pen blank is also preferably, al
its rounded shape.
though not necessarily, provided with a pierce pen
However, I also contemplate carrying out the 45
45 hole II.
operation in such manner that the side portions
In accordance with the present invention, the ' of the pen at the heel are separated from each
nib part of the pen is formed and con?gured in other to a greater extent than the side portions
a novel manner row to be described. It is ?rst
noted, however, that in pens of this type it is
50 desirable that the slit (usually extending from
the pierce hole through the writing tip) be in the
nature of a slot, i. e., it is desirable that some
metal be removed so as to leave the portions of
the pen at opposite sides of the slit somewhat
spaced from each other, this‘, for the reason,
I .
in the region of the pierce hole II. This will re
sult in the immediate formation of a tapered slot
and may be accomplished by arranging the work
ing tools so as to exert greater pressure toward
the heel end of the pen or, as shown in Figures .
5 and 6, by making the tool ll of somewhat
tapered shape, with the narrow edge overlying
2
2,121.641
the region of the pierce hole ll and the wide
edge the base of the heel 8.' In either event, the
metal toward the base of the heel is subjected
to a pressing operation which causes a greater
. separation of the edge portions of the pen at the
heel than in the region of the pierce hole, with
‘the result that .the slot is of tapered shape. '
Subsequent to the foregoing, the pen is "raised",
i. e., brought to the usual rounded shape as ap
10 pears in Figure 3. This view also very clearly
shows the slot I2’, although it will be understood
that the showing of the slot may be somewhat
exaggerated as to width not only in this view
but also in Figure 2. In any event, in accordance
15. with the present invention, a pen of the type in
question may very readily and inexpensively be
produced, since the “sawing" or slotting opera
tions heretofore employed are eliminated. As a
result of the formation of a slot (as contrasted
20 with a mere slit) the pen has materially improved
writing qualities, especially with regard to the
flow of ink downwardly to the tip.‘ At the same
time provision is made for bringing the tabs or
wings l0—l0 (constituting the writing tip of the
25 pen) into'contact with each other and this is
desirable in the average pen so as to permit the
- writing of ?ne lines.
In addition to the foregoing, my improved pen
is of advantage in another respect, i. e., for the
30 reason that the heel part 8 is of reduced thick
ness. This facilitates insertion of the pen in a
fountain pen barrel or pen holder and also aids
in retaining the pen in such a barrel or holder by
a wedgins' effect.
I claim;
1. In the treatment of a pen blank to form a
pen point, the steps of forming a slit in the blank
extending from the writing tip thereof inwardly
to form nib parts, and thereafter opening the slit
to form a slot by thinning and thus laterally
spreading the metal adjacent the inner end of the
slit.
-
_
2. In the treatment of a pen blank to form
a pen point, the steps of forming a slit in the
blank extending from the writing tip thereof in
wardly to form nib parts. and thereafter sepa
rating the nib parts formed by the slitting by
separating the metal at opposite sides of the slit,
the separation being-greater toward the inner end
of the slit than toward the outer end thereof to
provide a slot of taperedshape.
3. In the treatment of a pen blank to form a
pen point, the steps of forming a slit in the blank
extending from the writing tip thereof inwardly
to form nib parts, and thereafter opening the slit
to form a slot by thinning and thus laterally
spreading the metal of the blank in a zone ex
tended from a point adjacent the inner end ofthe
slit toward the heel end of the blank, the degree
of thinning being smaller adjacent the inner‘ end
of the slit than at a point spaced therefrom to
' ward said heel end.
LLOYD S. IENWOOD.
10
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