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Патент USA US2119307

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Patented May 31, 1938
v.;
2,119,301
UÍNITED STATES PATENT oFFlc
2,119,307
`
INKST‘AND‘
>Frank M. Ashley, Great Kills, N. Y., assigner to
Lewis Gompers, trustee, New York, N. Y.
Application September 16, 1936, Serial No. 100,965
5 Claims.
My invention relates to inkstands.
il
The object of my invention is to provide an
inkstand in which air may be automatically
drawn into'the reservoir by means which first
draws a supply of air intov the Well above the
surface of the ink therein by an upward move
ment of the dip-cup or by a diaphragm which
covers the inkwell to provide a sealed chamber
formed above the ink in the well, and which
when lowered will compress the air trapped
therein and cause it to force ink therefrom into
the dip-cup of the stand and support it therein.
A further object is to provide a construction
in which a dip-cup is used and into which the
' ink is delivered at a point above its bottom and
after it has become filled, the surplus ink deliv
ered to the dip-cup will be automatically drawn
back into the reservoir, thereby trapping a defl
nite amount of ink in the ink-cup maintained
20 at a definite height therein.
Referring to the drawing which forms a part
of this specification:
Fig. 1 is a vertical sectional View of an ink
stand embodying my invention, disclosing ink
25 trapped in the ink-cup.
Fig. 2 is a vertical sectional view in. which the
tube which extends into the ink in the reservoir
is adjustable to permit the height of ink in the
ink-cup to be varied and to adjust its lower end
30 relative to the bottom of the reservoir.
Fig. 3 is a modification of the construction
shown in Figures 1 and 2, in which construction
the trapping chamber has no bottom; the ink
being held in the dip tube directly by the con1~
35 pressed air in the reservoir.
I0 indicates the body of an inkstand which may
be made of glass or other suitable material, and
II is the ink-well reservoir for-med therein.
'I‘he upper inner side of the well is increased
40 in diameter at I3 to provide an annular shoulder
I4 which supports a disc I5 made of hard rubber
or other ink resisting material.
I6 indicates a circular «cover having depending
a flange I'I which fits closely in the top of the
45 body portion and its lower edge clamps the outer
edge of a soft rubber diaphragm I8 onto the edge
0f the plate or disc I5 to firmly hold it in position.
'I‘he diaphragm is preferably formed with its
inner and outer edge portions made of greater
thickness than the intermediate part I8', as il
lustrated, to permit the portion I8’ to stretch
easily when the dip-tube I9 is raised in the act
of drawing air into the reservoir chamber II.
The dip-tube comprises a tube 20 which may
55 be formed integral with the upper part forming
(Cl. 1Z0-63)
,
¿
the cup 2| as illustrated in Fig. l and may be
constructed to carry a smaller tube `22 which
extends therethru and is adjustable Vtherein to
regulate the height of ink in the cup.
`
In Fig. 3 the trapping chamber is not used, the
ink being supported by the compressed air in the
reservoir.
'
y
In Figures 1 and 2, anv air vent passage `23
is provided which extends from above the dia
phragm to a point below the same and serves to `
admit air into the reservoir to permit the air
pressure to equalize and prevent the air ‘from
expanding in the reservoir due to barometric
changes or by reason of the air therein being
heated by exposure to the sun, thus increasing
the pressure in the reservoir and causing the ink
to be forced therefrom thru the dip-tube. The
passage 23 is finger controlled, it being closed
during the operation of filling the ink-cup in the
downward movement thereof, or if desired, it >may
20
be closed in both directional movements.
The `plate I8 serves to carry the weight of the
movable parts in normal use of the stand.
The upper portion of the dip tube is formed
with inclined sides as illustrated and serves to
support a pen-holder in position to close the 25
opening and to support a pen in the ink ready
for immediate use.
The device operates as follows:
Referring to Fig. 3, the parts are shown in their
30
normal position of rest.
To ñll the ink-cup the dip-tube is raised which
causes the air in the reservoir to be rareiied and
air from without is drawn therein thru the cen
tral tube which on being lowered, compresses the
air in the reservoir above the surface of the ink 35
therein and forces ink into the dip tube where
it is held for use. The amount of ink delivered l
into the tube by said operation depends upon
the distance that the dip-tube is raised and the
amount of ink that is in the reservoir at the
time of operation.
I_n the ñgures shown in which the ink-cup com
prises a trapping chamber into which the ink
flows from its upper side, the air may be intro
duced into the reservoir as described for supply 45
ing ink to the chamber shown in Figure 3, in
which case the air vent is closed during the oper
ation of raising and lowering the dip-tube, but I
prefer to raise the dip tube' with the air vent
50
open to admit air to the reservoir therethru, and
to close the vent during the downward movement
of the dip-tube to compress the air in the reser
voir and force the ink therefrom thru the tube
and into the ink-cup.
65
25
2,119,307
It will be observed that by the use of the air
vent all surplus ink forced above the top of the
side of the reservoir, a flexible diaphragm con
nected to the dip-tube in air-tight relation and
dlp-cup in its filling operation, will ñoW back
held above the reservoir to form a closed cham
ber, a plate of stiff material held below the dia
into the reservoir as the compressed air therein
escapes thru the vent opening.
The cost of making the inkstand is low and in
use it functions perfectly.
Having thus described my invention I claim as
new:
1. An inkstand comprising a body portion hav
ing a reservoir formed therein, a dip-tube com
prising a trapping chamber located adjacent to
phere.
its lower end and a tube extending therefrom to
gether with; said diaphragm having its inner and
outer marginal edges increased in thickness rela
the lower side of the reservoir, a ñexible dia
15 phragm connected to the dip-tube in air tight
relation and held above the reservoir to form a
closed chamber, means for preventing the down
ward movement of the dip-tube and dia
phragm below its normal position of rest; the
20 construction being such that air may be drawn
into the reservoir by raising the diaphragm from
its normal position of »rest and ink forced thereby
into said trapping chamber during its downward
ai),i
phragm to support it in its normal position and
to protect it from ink, said dip-tube having an
air-vent passage adapted for ñnger control and
extending from a point above the diaphragm to
a point below the diaphragm to op'en communi
cation between the reservoir and outer atmos
`4:. The construction defined by claim 3, to
tive to its intermediate portion to permit easy 15
movement of the diaphragm and to strengthen
the said edge portions.
5. An inkstand comprising a body portion hav
ing a reservoir formed therein, a dip-tube com
prising a trapping chamber located adjacent to 20
its lower end and a conduit extending therefrom
to the lower side of the reservoir, a ilexible dia
phragm connected to the dip-tube in air tight
movement.
2. The construction defined in claim l, to
relation and held above the reservoir to form a
gether with; said dip-tube having an air-vent
passage extending from above the diaphragm to
below the diaphragm in normal open communi
cation with the reservoir and the atmosphere.
ward movement of the dip-tube and diaphragm
below its normal position of rest; the construc
3. An inkstand comprising a body portion hav
ing a reservoir therein, a dip-tube comprising a
trapping chamber located adjacent to its lower
end and a tube extending therefrom to the lower
closed chamber, means for preventing the down
25
tion being such that air may be drawn into the
reservoir by raising the diaphragm from its nor
mal position of rest and ink forced thereby into 30
said trapping chamber during its downward
movement.
FRANK vM. ASHLEY.
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