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Патент USA US3044411

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July.17, 1962
R. M. PINE
3,044,397
INKING MEcHANïsM FOR IMPRINTERS
Filed May ll, 1959
2 Sheets-Shea?I 1
July 17, 1962
R. M. PINE
3,044,397
INKING MECHANISM FOR IMPRINTERS
Filed May l1, 1959
FII-5_2
2 Sheets-Sheet 2
o
United States
atent
ice
3,044,397
Patented July 17, 1962l
1.
continuous form-stationery. In the illustrated embodi
3,044,397
MECHANÍSM FUR IMPRNERS
Robert M. Pine, Qhicago, Ill., assigner to Uarco,
ment, a base 1 may be partof. a bursting machine for the
continuous form stationery. Frame members such as 2,
extend upwardly from the base in order to support _a back
Incorporated, a .corporation of Illinois
ing roll 3 for the printing roll 11 in ,turn having thereon
plates such as 4 andS Vwhich'may carry raised characters
for» performing imprinting upon the stationery kS led be
tween the printing roll or cylinder 11 `and the backup roll
3. The arrow indicates the direction of movement> Qf the
stationery between the printing rolls. A handle 6 is as
sociated with the shaft 7 supporting theimprinting cylin
der 11 so'that the imprinting cylinder may be removed
Filed May 11, .1959, Sel', NQ- 812,255
i claim. (ci. rs1-367)
This invention relates to an inking mecharllSm for Vim
printers and more particularly to an ink supply and appli
cator device for use in imprinting continuous form sta
tionery.
'
It has been common practice in the past to provide an
imprinting unit with _an open tray of liquid ink into which
from the frame 2 when desired.
a roller was dipped to pick up a surface film of ink or a
The mechanism for supplying the inktothe raised char- v
acters on the imprintingy cylinder is also >supported on the
base 1 by an upstanding frame 8 attached to the base. In
roller on which ink was daubed by brush for application
to a printing plate. This practice required the tray to be
cleaned after each day’s use. The unused ink would be
transferred to storage containers to prevent drying and the
rolls of the imprinter had to be cleaned to maintain them
in operative condition. Failure to properly clean all parts
y
the embodiment illustrated4 an ink supply cylinder 10 is
mounted in the frame members 8 and delivers itsink to
a pick-up roller 12 from which itis transferred to a rub
20
Y of the imprinter often resulted in drying of the ink in the
supply tray and on the rolls causing difiiculty in later at
tempts to use the imprinter.
My invention obviates and solves the problems hereto-v
fore experienced by providing a novel structure including
a porous ink supply drum which gives up liquid ink into
v
ber vibrating roll, 13V and then to the applying roll 14
which receives ra uniform, smooth lilm of ink on its sur,
face. The usual alternates between steelsurfaced and
rubber surfaced rolls are used. While the illustrated dia
25
grammatic showing in FIGURE linterposes rolls be
tween the ink- supplycand the imprinting cylinder, it has
been found that the ink supply is so constructed and ar
rectly onto a printing roll. A large supply lasting for
ranged that in certain> applications ink canl be taken di
rectly upon the raised type of an imprinting plate Without
and improved device for supplying liquid ink to a rotary y
inner and outer sleeves 17 ,and 1_3 generally concentric to
a fibrous sleeve from which ink may 'be transferred di
the interposition of intervening rolls.` The present inven
months even` for the heaviest users is provided. The ink
ing drum can be rotated directly against the raised char 30 tion is primarily concerned with the arrangement and
structureV of the ink >supply cylinder.
y
acters onv an imprinting cylinder or the ink can be relayed
Turning now more particularly to FIGURESZ through
by rollers to the imprinting cylinder. The ink may be
4 of the drawings, the yink supply cylinder, generallydesig
retained in the drum between uses of the imprinting unit
nated 10, is provided with uan annular ink reservoir 15,
without requiring removal or cleaning.
The primary object of my invention is to provide a new 35 The reservoirflS isdeiined by> spaced circular cylindrical
imprinting cylinder.
each other,I and annular end members 19` and 20 press
' . Another object is to -provide an ink supply and appli
fittedv between the sleeves. The annular end members and
sleeves are secured; together iny liquid tight fashion bythe
press fitting o_f the end'members between the sleeves. All
çator device which avoids the effects of drying of the ink
40
in the supply after an imprinting operation.
the membersof the drum can beY made of any rigid ma
A_ further object is to provide an ink supply and appli
terial resistant to the chemical properties of ink, such as
cator device which, when used with an imprinting unit,
for example, cold rolled steel.
'
provides the imprnter with an ink supply operative at any
time for immediate application.
The hollow drum, is mounted on a shaft 21 passing v
Another object is to provide an ink supply and applica 45 snugly through the inner sleeve 17 but` with sufficient
tor device having a chamber for receiving and retaining
clearance to allow removal. The drum'is securely fas
tened to the shaft by a set screw 22 threaded radially
the ink for gradual release during use.
through an end portion 23 of the drum. It is preferred
Another object is to provide a device of the character
to use a set screw with a head portion that may enter the
described which has a relatively soft, circular cylindrical
tapped bore as illustrated. Tightening of the screw
outer surface permitting direct application of ink from the
against the shaft is generally sufficient to lock the drum in
device to an imprinting plate.
.
a selected position on the shaft. An opening in the felt
Other objects, features and advantages will be apparent
sleeve over the set screw may be provided.
from the following detailed description of an embodiment
The outer sleeve 18 of the drum has a relatively smooth
of the invention illustrated in the accompanying drawings,
55 outer surface 24 interrupted only by a series of circum
wherein:
ferentially extending grooves 25 having a depth less than
FIGURE 1 is a diagrammatic side elevational view of
the thickness of the sleeve 18. As shown in FIGURE 2,
an imprinting system illustrating the relative positioning of
the grooves are arranged in parallel fashion and spaced
printing, vibrator and transfer rolls and having an ink
approximately 3/s of an inch apart. A plurality of open
supply and applicating cylinder of this invention shown in
cross-section and positioned relative to the other struc 60 ings 2‘6 extend through the outer sleeve 18 to connect the
interior of the drum with each of the grooves 26. The
ture of the imprinter;
,
openings permit ink to pass or bleed outwardly into the
FIGURE 2 is a plan view of the ink supply and appli
cator cylinder mounted on a rotatable shaft, having the
outer sleeve partially broken away;
~
grooves. It has been found that if'the openings are spaced
angularly 45° apart, a suñicient supply of ink will be
FIGURE 3 is a central sectional View through the cylin 65 supplied under operating conditions.
~The preferred ink is a relatively viscous liquid which
der shown in FIGURE 2 taken about 90° therefrom, and
will pass through the openings 26 but will not readily flow
FIGURE 4 is a transverse sectional view through the
due to its viscosity. The ink permeates a soft sleeve about
same cylinder taken substantially along the line 4-4 in
the supply cylinder and is given up to any surface that
FIGURE 2.
Referring to FIGURE 1 of the drawings, an imprinting 70 presses against the soft sleeve.
The soft sleeve referred to is here shown as formed of
unit is shown as might be used with a business machine
a ñbrous material covering 27 tightly ñtted about the outer
often found in any oflice using a substantial volu-me of
i 3,044,397
4
surface of the outer metal sleeve 18. The fibrous cover
ing 27 bridges the grooves 25 forming channels below the
remain inactive for several days without any apparent
change in the ability of the device to properly coat a sur
, inner surface 29 of the covering into'which ink can ñow
face broughtV against it with ink for imprinting purposes.
from the supply. 'The drum lhas sloping edges 30 at the
The felt seems to protect the ink from air so that there
is'little on no caking or drying of the ink. It is contem
ends of the sleeve 18 to aid in leadingthe soft covering
onto the drum. The inner surface ofthe soft sleeve is
about the same size as the drum so that assembly makes
the outer sleeve tight on the drum.
.
Y,
plated that afterV extensive use of the device it should be
cleaned in a solvent for the ink. For this purpose, the
felt may remain on the cylinder.
The fibrous covering can be constructed of any suitable
‘The foregoing detailed description has been given for
absorbent material, felt being preferred. The outer sur
face ofthe felt covering is ground to a true circular cylin
drical surface about the shaft 21 after the felt is placed
about the drum. The accurately cylindrical surface of the
felt permitsr mounting of the ink supply cylinder in direct
Contact with an imprinting cylinder and insures that ink
will be properly applied to type, characters, etc. The
amount of ink delivered to the felt depends upon the type
and viscosity of the ink and is l'chosen to, in effect, sat
urate the felt Without thevfelt releasing the ink except
upon contact. The'transfer of ink from _the felt> to a roll
clearness of understanding only and no unnecessary lim
itations should be understood therefrom, for some modiÍi
cations will be obvious to those skilled in the art.
I claim:
An ink supply and applicator for an imprinting unit
used with a business machine, comprising: a hollow drum
>or to'type may be controlled by the pressure of contact
heads, means for securing the drum upon a generally hori
betweenthe felt and the surface towhich transfer is made.
zontally disposed shaft, said means including a screw ex
An opening 31 extends radially through the fibrous
having inner and outer generally concentric cylindrical
sleeve members and doughnut shaped head members press
fitted. between said sleeves in liquid-tight fashion at the
respective ends of the sleeves providing an annular ink
receiving space between‘said sleeves and intermediate said
tending radially through said outer sleeve, a head member
and said inner sleeve to bear against the shaft; said outer
sleeve having a relatively smooth outer surface interrupted
by a plurality of circumferentially extending grooves
preferably should extend inwardly Well below the surface Y
therein having a depth less than the thickness of said
ofthe felt. Other iilling passagesrmay be provided, for
sleeve and a plurality of openings through the outer sleeve
example, in the end members instead of in the outer sleeve
communicating with the interior with each of said grooves,
30 said outer sleeve further having a closable ink ñlling port
covering and through the outer sleeve 18 to provide means
for refilling the reservoir. A threaded plug 32 may be
used to close the opening after a refilling operation and
as
illustrated.
’
‘
'
`
In operation, the ink’supply and applicator cylinder is
extending radially therethrough spaced intermediate said
iilled after the cylinder Vis placed on a shaft such as 21 in
head members, and a ñbrous material sleeve tightly em
relation to an imprinting unit. VV'I‘he filling opening pro
bracing» and covering substantiallyV the entire Width of
vided in the cylinder’is intended for use with a squeeze
said outer sleeve and bridging over said grooves.
bottle-type of ink container so that the ñlling of the con
tainer is a relatively easy operation. As shown in FIG
URES 3 and 4, the ink may not lentirely iill the chamber;
however, `the openings through the outerl Wall of theV
chamber will permit the removal of air'so that the cham#
berV may .be completely iilled,rif desired. The ink will gen 40
erally pass into the circular grooves and on into the felt
and is believed to till the interstices in the felt. The ink is
sufficiently viscous-’but it will not drop by gravity from the
surface of the felt. Touching the felt will transfer ink
from the felt to the surface brought against it. A heavier 45
pressure will result in the transfer of more inkv and a
lighter pressure Will take up less ink from the surface.
Afterextensive use of an imprinting unit with the ink
applying cylinder of this invention, the ink may be re
tained or left in the cylinder without adverse eiïects. The
cylinder may be used for several days intermittently or
References Cited in the file of this patent
A
UNITED STATES PATENTS
419,014
Groth _______________ __ Jan. 7, 1890
652,821
Vail et an ___________ ____ July 3, 1900
928,514
`930,309
Grant _______________ __ July 20, 1909
’ Munk _____________ ____ Aug. 3, 1909
1,245,391
1,292,244
1,643,488v
Schmidt _____________ _; Nov. 6, 1917
Brown _____________ __'- Ian. 21, 1919
Ehrlen et al. _________ __ Sept. 27, 1927
1,711,245
1,727,978
Ohrner ______________ __ Apr. 30, 1929
Huebner ____ ________ __ Sept. 10, 1929
2,727,462
Alessi _____ _‘__________ Dec. 20, 1955
557,113
VGermany ____________ __ Aug. 18, 1932
FOREIGN PATENTS
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