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Патент USA US2403703

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July 9, 1946.,
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‘
R, BACK ‘
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2,403,703v '
HOODED ‘FEED BAR FOR PENS‘
Filed Aug. 27», 1945
E0552 7'' BAINc/<.
VEN TOR.
BY
'
'
ATTORNEY.
2,403,703
Patented July 9, 1946
~ Y UNITED‘ STATES I‘V'PATENV‘T "osrics
HOODED FEED BAR FOR PENS
Robert Back, Los Angeles', Calif., assignor to Bert
M. Morris C0,, Los Angeles, Calif., a ?rm - '
Application August 27, 1945, Serial No. 612,819
2 Claims.
1 .
The invention relates to a hooded type feed
bar for ‘pens and more particularly to a cooper
ating hood and feed bar for writing pens.
,
Objects of the invention are to facilitate proper
alignment of the feed bar in the hood, to increase
the capacity of the hood andfeed bar to retain
ink, and to provide a combined feed bar and hood
having an opening for the escape of air to pre
(Cl. 120-51)
2
,
a full-fashioned comb 1 and 8, the bottoms of
which terminate slightly belowthe axis of the
feed/bar as indicated by the line 9 in Fig, 3.
Below the bottom of the comb ‘land 8 and longi
, tudinally extending at the bottom of the feed
bar, is a web 10 having sides which are substan
tially parallel or which may converge inwardly
in an upward direction by a slight angle such as
1‘/2° to temporarily retain the lower half of feed
vent the pen from flooding.
.
.
These objects are accomplished by employing ~10 bar in ‘the mold section in which it is cast, as
described and claimed in the following patent
a feed bar having on its underside. a longitudi
applications: Ser. No; 612,820, ?led August 2'1,
nally extending web and by arranging a slot in
‘ 1945, for “Feed bar for pens,” and Ser. No. 612,821,
the bottom of .the hood to guide and properly
?led August 27, 1945, for “Method of molding
position the feed bar in the hood when the parts
are assembled. Also, the web on the feed bar 15 feed bars for pens.” If the undercut is used, the
thermo-plastic material customarily employed for
and the slot in the hood cooperate to provide cap
making feed bars is deformable enough when the
illary spaces which assist in holding ink in the
mold is opened to permit the usual ejection pins
hood and on the feed bar, these capillary spaces
to eject the feed bar. This insures that the
. also serving as openings to permit the escape of
air at the rear of the pen assembly to prevent 20 upper mold section will pull away from all of the
- combs and prevent distortion of the molded arti
such air from producinga ?ood of ink at the tip
cle which would arise if some of the combs stuck
end of" the pen assembly,
in the upper mold section and others stuck in
The presence of such air may ‘be due to the
the lower mold section.
.
I
expansion of entrapped air due to the heat from
The bottom ll of the hood inclines upwardly
the hand or body of the user or atmosphere, in 25
towards the front of the hood as shown in Fig.
the case of either a dip pen or a fountain pen.
3. At the front end of the hood bottom ll is a
’ For further details of the invention, reference
slot I2 through which the web l0 projects in
may be made to the drawing wherein
the ?nished article, as shown in Fig. 3. Slot l2
Fig. 1 is an enlarged view in side elevation of
has sides 13 and M which are substantially par
a hooded type pen according. to the present in
allel and spaced apart slightly more than the
vention.
width of the substantially parallel sides of Web
Fig. 2 is an exploded view in full size showing
ID, thereby providing capillary spaces l5 and I6
in side elevation the nib, feed bar and hood of
between each side of the web l0 and the adjacent
the present invention.
side of the slot l2.
Fig. 3 is an enlarged view in side elevation
When the feed bar 3 is assembled in the hood
with the hood in section, of the pen assembly of
2, the web l0 slides in and through the slot l2
Fig. 1.
‘
to guide the feed bar into the hood so that the
Fig. 4 is an enlarged bottom plan view of the
feed bar will not be ‘in a rotated position with
pen assembly of Fig. 1 as seen on line 4-4 of
respect to the hood but will be properly aligned
Fig. 1 looking in the direction of the arrows.
Fig. 5 is a sectional view on line 5-—5‘ of Fig. 3
looking in the direction of the arrows.
Referring in detail to the drawing, the‘ pen
assembly 1 comprises a hood 2 forming a socket
for a feed bar 3, and a suitable nib 4.
The pen assembly I is here shown as having
a closed cylindrical end 5 to ?t in the socket, not
- shown, for a dip rpen, although the invention
herein described may be employed for a, fountain
pen.
The hood 2 completely encircles the rear end
and most of the feed bar 3. Hood 2 has an open
front end 6 through which the nib and the front
therewith, as shown in Figs. 3 to 5. When in
position, the ‘web 10 at its front end extends
through slot 12 top the outside of hood 2 and
web It! at its rear end extends through slot l2 to
the inside of hood 2.
The feed bar 3 at the top thereof has a longi
tudinally extending capillary channel I‘! and
the rear end of the feed bar may be cut away,
as shown at l8, so that channel I‘! may com
municate with a chamber l 9 in the case of a dip
pen, or with the reservoir of the fountain pen,
not shown.
If the hood is loaded with ink, in the absence
of slot l2, an increase in air pressure for any
end of the feed bar project.
The feed bar 3 at opposite sides thereof has 55 reason at the rear end of the feed bar would
2,403,703
4
cause the ink to ?ood. from the front end of the
feed bar. This is avoided or reduced according
to the present invention, as such increase in air
pressure is relieved through the openings l5 and
It; for the reason that while a, capillary ?lm of
ink may exist at those openings, the air pressure
would have less work to do in breaking those ?lms
and escaping through openings l5 and I6 than
it would in pushing a body of ink beyond the front
end of the feed bar.
'
The sides of the web l0 and the sides of the
slot 12 cooperate to provide the capillary open
ings I5 and I6 which serve as a capillary force
to retain ink in the hood 2.
'
1. A pen assembly comprising a hood having a
socket, a feed bar ?tting in said socket, a longi
tudinally extending web at the bottom of said
feed bar, said hood having a bottom having a
slot slightly wider than .said. Web, said web ex
tending through said slot, said slot opening into
the interior of said hood on its inside and open
ing at the exterior of said hood at its outside and
providing capillary spaces at opposite sides of
10 said web.
2. A pen assembly according to claim 1 wherein
the bottom of said web is substantially .parallel
to the axis of said feed bar and the bottom of
said hood and also said slot are inclined to
It will be apparent that various. modi?cations 15 said axis, said web extending through said slot
may be made in the invention without departing
to the inside and outside of the bottom of said
from the spirit of the following claims.
hood.
I claim:
ROBERT BACK.
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