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Патент USA US3062147

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Nov. 6, 1962
3,062,137
‘J. L. WALDORF
INK FOUNTAINS
‘Filed Sept. 50, 1959
3 Sheets-Sheet 1
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Nov. 6, 1962
3,062,137
J. |_. WALDORF
INK FOUNTAINS
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Filed Sept. 30, 1959
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United States Patent 0 "ice
1
3,062,137
Patented Nov. 6, 1962
2
,
the exposed end of the stem 2-8 thus to hold the pump, 23
3,062,137
in position.
INK FOUNTAINS
John L. Waldorf, Norwalk, Ohio
(149 High St., New London, Ohio)
Filed Sept. 30, 1959, Ser. No. 843,391
12 Claims. (Cl. 101-350)
The pump casing outlet '32 is under the control of a
needle valve 33 whose stem 34 is adjustably threaded
through the wall 11 and provided with a knob 35. The
thus metered ink ?ow from the pump 23 is delivered to a
doctor blade 36 via the casing port 37, and the ?exible
tube 38 extending through the bore 39 in the base 10.
The present invention relates to ink fountains and
The doctor blade '36 is slidable in a slideway 401 in a
particularly to fountains for use with apparatus for print
ing data on such articles as radio and television tubes. 10 central, roll accommodating recess 41 in a bracket 42.
The side walls 11 and 12 have transversely alined, hori
In printing data on tubes, it is important that the ink
zontal channels 43 and 44 slidably receiving the margins
be of a type that will dry quickly and this essential re
of the (bracket 42. Adjusting screws 45 are threaded
quirement has resulted in printing failures attributable to
through the bosses 46 of the back plate 18 and these
the fact that the ink became too thick for effective use.
slidably receive push pins 47 and their backing springs
The term “ink” is used herein to designate any liquid
'48. By these or equivalent means, the desired engage
color usable for the above or similar purposes.
The principal objective of the present invention is ‘I ' ment of the doctor blade and the ink roller is adjustably
‘effected to ensure the proper distribution of the metered
to provide an ink fountain which enables the ink to be
?ow of ink. It will be appreciated that a distributor roll
delivered to the ink roller in satisfactory condition for
effective printing under a Wide range of conditions. This 20 may be used in place of the doctor blade and that a con
objective is attained by providing for the delivery of M ventional, reciprocating roller may be associated with
ink to the roller-abutting transfer ‘element, either, a ' either if necessary to ensure proper distribution of the
distributor roll or a doctor blade,__from a reservoir by
ink.
pump controlled delivery ‘means proyided with a valve
' " The side walls 11 and 12 also have transversely alined,
to the reservoir includesa roll scraper that ispreferably
ceiving a member 51 which is held therein by the back
plate 18. A pair of screws 52 are threaded through the
front part of the member 51 and these engage a bracket
"53 each of whose ends is slidably entrant of a vertical slot
539' interconnecting the inner ends of the horizontal
slideways in the appropriate one of the side walls. The
bracket 53 is provided with a drain or return 54 receiving
ink from a scraper blade 55 and discharging it into the
reservoir 19. It is preferred that the blade 55 be de
tachable and of a safety razor type and, for that reason,
the side walls of the return 54, at the front part thereof,
enabling the ink ?ow to vbe metered. ' An‘ink ‘return 25 horizontalslideways 49 and 50 (see FIG. 5 ), slidably re
adjustable and an'auxiliary reservoir, for additives such
as solvents, has janoutlet discharging into the ink
and provided with a valve‘ enabling ‘the drip ?ow
additive to be metered to meet existing operating
tions with the pump of the delivery means being
return
of the
condi
opera
tive to thoroughly and completely mix the ink and addi
tives.
'_In the accompanying drawings, there is shown an illus
trative embodiment of the invention from which these
and other of its objectives, novel features, and advantages
will be readily apparent.
v‘In the drawings:
have transversely alined, blade receiving slots 56. The
blade 55 engages the roller 14 and the return 54 is sup
ported by upper portions of the reservoir 19. The pres
FIG. 1 is a side elevation of an ink fountain in accord
ance with the invention,
40 sure of the blade 55 on the roller 14 is adjustably con"
FIG. 2 is a rear elevation thereof,
trolled by the screws 52.
'
=
The member 51 includes a reservoir 57 for ink additives
FIG. 3 is a section taken approximately along the
required to restore the ink removed from the ink roller 14
indicated lines 3-—3 of FIG. 2,
to a condition satisfactory for re-use. The reservoir 57
FIG. 4 is a ‘section taken approximately along the
45 has a removable cover 58 and an outlet 59 disposed to
indicated lines 4-4 of FIG 3, and
discharge the ink additive into the return 54, preferably
FIG. 5 is a section taken approximately along the
against the scraper blade 55 close to ‘the ink roller 14.
indicated lines 5-5 of FIG. 3.
Flow through the outlet 59 is controlled by a drip meter
In the embodiment of the invention illustrated by the
ing valve 60 whose stem is adjustably threaded as at 61
drawings, the ink fountain comprises a base 10 and side
walls 11 and 12 in which are journalled the ends of the 50 through the rear part of the member 51 and is provided
with a knob ‘62 marked with suitable indicia andv yield
shaft 13 of the ink roller 14. One end of the shaft 13
ably held in a selected position as by a resilient arm 63.
protrudes from the end wall 11 for connection to a
it will be appreciated from the foregoing that ink foun
suitable drive, not shown, while the end wall 12 is pro
tains in accordance with the invention are well adapted to
vided with a recess 15 in which there is a gear 16 ?xed on
the other end thereof and in mesh with an idler 17 also 55 meet a wide range of requirements since the invention
provides for a metered ?ow of ink to the ink roller 14,
rotatably mounted in the recess 15.
adjustability of the engagement of theink distributing
A back plate 18 is secured to the walls-and to the base
and it and a cavity in the base 10 establish an ink reser
void 19 with which a ?ller port 20 having a hinged cap
element with the ink roller, the removal of the ink from
the roller 14 after the inking of the stamp and the re
20a and opening through the back plate 18, is in com 60 turn thereof to the ink reservoir with the metered addi
munication. The base 10 has a bore 21 whose axis is in
tion to the return ?ow of the additives necessary to en
parallel with the axis of the ink roller 14 and in which
there is the casing 22 of a generally indicated pump 23.
The casing 22 has an inlet 24 (see FIG. 3), in communi
cation with the reservoir 19 and it is held from turning as 65
by a pin 25 entrant of a groove 26 extending length
sure that the delivered ink is of acceptable quality and
condition. In addition, the action of the pump ensures
as thorough and complete mixing of the ink and addi
tives as is accomplished at the ink factory.
I claim:
1. In an ink fountain, an ink roller, a transfer ele
ment abutting said roller, a primary reservoir, means to
circulate ink from said reservoir to said roller and back
exposed outer end of which there is a gear 29 in mesh
with the idler 17 and located in the recess 15. A cover 70 to said reservoir, said means including an open return
including a scraper blade and a delivery pump, and an
30 for the gears 14, 17, and 29 is detachably secured
wise of the bore 21.
Within the casing, there is a ro~
tatable screw 27 having an axial stem 28 fast on the
to the side wall 12 and it includes a contact 31 engaging
auxiliary reservoir discharging into said circulating means
3,062,137
3
4
on the infeed side of said primary reservoir and covering
ported by one pair of slideways, a primary reservoir, de
said return.
2. In an ink fountain, an ink roller, a transfer element
livery means including a pump whose intake is opera
tively connected to said reservoir and whose outlet is
disposed to deliver ink to said element, a return including
abutting said roller, a primary reservoir, delivery means
including a pump including a cylindrical casing whose
a roller scraper and an outlet discharging into said reser
intake is operatively connected to said reservoir and whose
voir, said return being in engagement with said roller and
outlet is disposed to deliver ink to said element, and a
supported by said reservoir, an auxiliary reservoir slidably
supported by the other pair of slideways and discharging
into said return, adjustable means carried by said auxiliary
scraper and an outlet discharging into said reservoir, and
an auxiliary reservoir above said return discharging into 10 reservoir and engaging said return for adjusting the
screw rotatable in said casing, a return including a roller
said return.
3. In an ink fountain, an ink roller, a transfer element
pressure of said scraper on said roller, and a back seating
said element and said auxiliary reservoir in their respec
tive slideways.
abutting said roller, a primary reservoir, delivery means
9. In an ink fountain, a pair of side walls including
including a pump including a cylindrical casing whose in
take is a port opening into said reservoir adjacent its 15 two vertically spaced pairs of horizontal, transversely
alined slideways, an ink roller journalled in said walls, a
bottom and whose outlet is disposed to deliver ink to said
transfer element abutting said roller and including a
element, and a screw rotatable in said casing, a return
bracket slidably supported by one pair of slideways, a
including a rollerscraper and an outlet discharging into
primary reservoir, delivery means including a pump
said reservoir, and an auxiliary reservoir above said re
turn discharging into said scraper blade.
20 whose intake is operatively connected to said reservoir
and whose outlet is disposed to deliver ink to said ele
4. In an ink fountain, an ink roller, a transfer element
ment, a return including a roller scraper and an outlet
abutting said roller, a primary reservoir, delivery means
discharging into said reservoir, and an auxiliary reservoir
including a pump whose intake is operatively connected
slidably supported by said other pair of slideways and
to said reservoir and whose outlet includes a needle valve
and is disposed to deliver ink to said element, a return 25 discharging into said return, and a back seating said
auxiliary reservoir in its slideway and including resilient
including a roller scraper and an outlet trough discharg
adjustable means, en'g-agable with the rear o-fsaid' bracket
ing into said reservoir, and an; auxiliary reservoir dis
‘for adjusting the engagement of said element and said
charging into said return.
roller.
5. In an ink fountain, an ink roller, a transfer element
10. In an ink fountain, a pair of side walls including
abutting said roller, a primary reservoir, delivery means 30
including an ink mixing and delivery pump in the bottom
ofv said reservoir and having its intake opening into said
reservoir and its outlet disposed to deliver ink to said
element, a return including a roller scraper and an out
a pair of horizontal, transversely alined slideways, an ink
roller jornalled in said walls, a transfer element abut
ting said roller and including a bracket slidably supported
by one pair of slideways, a primary reservoir, delivery
let discharging into said reservoir, and an auxiliary reser 35 means including a pump who intake is operatively con
nected to said reservoir and whose outlet is disposed to
voir discharging into said return.
v6. In an ink fountain, an ink roller, a transfer element
abutting said roller, a primary reservoir, delivery means
including a delivery and ink mixing pump in the bottom
deliver ink to said element, a return including a roller
scraper and an ‘outlet discharging into said reservoir, an
auxiliary reservoir discharging into said return, and ya
of'said reservoir whose intake opens therein and whose 40 back including resilient adjustable means engageable with
the rear of said bracket for adjusting the engagement
outlet is disposed to deliver ink to said element, said
of said element and said roller.
.pump being of the screw type, a return including a roller
11. The ink fountain of claim 10 in’ which the trans
.scraper and an outlet discharging into said reservoir, and
fer element is -a doctor blade and the front of the bracket
an auxiliary reservoir discharging into said return.
has a pocket slidably receiving the doctor blade.
7. In an ink fountain, a pair of side walls including
12. ‘In an ink fountain, a, pair of side walls including
two vertically spaced pairs of horizontal, transversely
a pair of horizontal, transversely alined slideways, an‘ ink
alined slideways, an ink roller journalled in said walls,
roller journalled in said walls, a transfer element abut
a transfer element abutting said roller and slidably sup
ting saidv roller, a primary reservoir, a delivery means
ported by one pair slideways, a primary reservoir, delivery
including a pump whose intake is operatively connected
means including a pump whose intake is operatively con
to said reservoir ‘and whose outlet is disposed to deliver
nected to said reservoir and whose outlet is disposed to
ink to said element, a return including a roller scraper
deliver ink to said element, a return including a roller
and an outlet discharging vinto said reservoir, an auxiliary
scraper and an outlet discharging into said reservoir, and
return being in engagement with said roller and supported
by said reservoir, an auxilairy reservoir slidably sup
ported by the other pair of slideways and discharging
into said return, and a back seating said element and said
auxiliary reservoir in their respective slideways.
8. In an ink fountain, a pair of side walls including
two vertically spaced pairs of horizontal, transversely
alined slideways, an ink roller journalled in said walls, a
‘transfer element abutting said roller and slidably sup
reservoir slidably supported ‘by said slideways and dis
. charging“ into said return, and a back seating said auxil
iary reservoir in said slideways.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,262,707
2,055,272
2,590,538
Smith _______________ __ Apr. 16, 1918
Weiss _______________ __ Sept. 22, 1936
Huck _______________ __ Mar. 25, 1952
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