Year: 1899

page_text: Date of Application, 30th June, 1899-Accepted, 5th Aug,,
1899
A communication from GEORGE WASHINGTON CUMMINGS, Manufacturer, of 45,
Park Place New York City, New York, United States of America.
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, in the County of London,
Chartered Patent Agent, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
-
This invention relates particularly to inking devices for rotary stenciling
machines, and it is in the nature of an improvement on the inking device illus-
trated in connection with the rotary stenciling machine described in Letters Patent
of England No. 11755/98, granted to my correspondent May 24, 1898, to which
patent reference is had for a fuller description of the construction and operation
of the machine itself than is necessary for the purpose of this application.
The object is to provide an inking device by the use of which the ink flow from
the ink-chamber to the inking-rolls within the stencil cylinder may be perfectly
regulated and, when desired, cut off beyond the possibility of leakage. Heretofore,
great difficulty has been experienced in the matter of leakage as well as in the
matter of regulating the flow of ink during the operation of the machine; and,
to insure neatness of work and avoid discomfort to the operator, it is absolutely
essential that both of these features be taken into consideration and provided for
in the construction of the inking device.
Generally stated, the means by which the object indicated is accomplished,
and which constitutes the subject-matter of the invention consists in an improved
valve for regulating the discharge from the ink-chamber to the interior surface of
the perforated stencil-cylinder employed; in the preferred construction and
arrangement of parts for stationarily supporting the ink-chamber, rotatably sup-
porting the stencil cylinder, and regulating the position of the valve to permit a
greater or less flow of ink; and, finally, in the minor improvements in the con-
struction and arrangement of parts hereinafter described in the specification and
pointed out in the claims.
In the accompanying drawings-
Figure 1 is a vertical longitudinal section through the stencil-cylinder, ink-
chamber, and attendant parts, and a fragmentary view of the frame supporting the
same, the section being taken as indicated at line 1 of Fig. 6; Fig. 2, a plan view
of a portion of the stencil-cylinder showing a slide-valve which guards the
opening of the stencil-cylinder, whereat ink is introduced to the ink-chamber;
Fig. 3, a top plan view of the ink-chamber; Fig. 4, a plan section of the ink-
chamber taken on line 4 of Fig. 1; Fig. 5, a fragmentary plan view showing
the means for regulating and indicating the position of the valve; and Figs. 6, 7
and 8 sections taken on the corresponding lines of Fig. 1.
A A represent portions of the frame carrying divided journal-boxes A2 A3,
wherein are supported the stencil-cylinder B and the ink-chamber C.
The preferred manner of mounting these parts is that illustrated in the draw-

page_text: ings. The stencil-cylinder is supported at its ends by spiders D and E rigidly
attached at their hub-portions to the inner ends of sleeves D' E¹ journaled in the
boxes A2 A3, respectively. Exterior to the journal-box A³ the sleeve E' is pro-
vided with an operating handle F, and, exterior to the journal-box A2, the
sleeve is provided with a gear G which may be used to communicate motion
to the feed and severing-rolls (not shown), where the use of the latter may be
deemed desirable.
The sleeve has journaled within it one end of a shaft H which extends
through the ink-chamber and is rigidly attached thereto. Adjacent to the gear G
is an arm I attached to the shaft-end and to the frame and serving to hold the
shaft and, through its medium, the ink-chamber C in rigid relation with the
frame.
The sleeve E¹ has journaled in it a sleeve J having at its inner end a pinion J¹
and at its outer end a knob J2 fixed to the sleeve by a set-screw t. The knob is
provided with a reduced outer end having a beveled edge and markings thereon
which may bet set with reference to a stationary index marks on a sleeve or
button fixed to the reduced outer end of the shaft H adjacent to the outer end
of the sleeve J by means of a set-screw s².
The ink-chamber is provided at its upper part with a rectangular boss C¹ which
is covered with a flat plate provided with an opening guarded by a slide-
valve, the plate being secured in place by means of screws and the slide by
screws moving in a slot therein. The stencil-cylinder is provided at its non-
perforated portion with an opening 9 guarded by a slide valve q' provided with a
beveled-edge slot q2 within which fits a beveled-edge block g³ secured to the stencil-
cylinder by means of a screw, and serving to slidingly hold the valve against its
depressed seat. The opening 7 may be caused to register with the opening r
to permit the introduction of ink into the ink-chamber.
The ink-chamber is provided at its bottom with a valve-chamber K, preferably
cast integrally with the ink-chamber, within which fits a rotatable hollow valve K
provided with plug ends and with longitudinal rows of perforations ? etc., of
varying number of perforations per row. The valve is preferably made tapering
and is provided at the small end with a reduced threaded portion n, a washer n¹
bearing against the outer surface of the end of the valve-chamber, and a nut n³
bearing upon said washer. The reduced end portion may be made of square
cross-section for a portion of its length, and the washer shaped to fit it. The
shoulder at the inner termination of the reduced portion should extend less than
flush with the outer end surface of the ink-chamber, thus allowing the valve to be
drawn upon by turning the nut n² to form a close joint with the walls of its
chamber. At its opposite end the valve is provided with a pinion m which meshes
with the pinion J₁, the two pinions serving to cause the valve to rotate when the
sleeve Jis rotated by means of the knob J². At the lower part of the valve-
chamber is a longitudinally extending discharge slot 7 with which any row of
perforations in the valve may be brought into registration by turning the knob J³
till the mark thereon which corresponds to the particular row desired registers
with the index s. The valve is always kept filled with ink, the latter passing
through relatively large sized holes bored in the bottom of the ink-chamber
proper to intersect the conical walls of the valve-chamber.
Beneath the slot 7 is an inking-roll h in frictional contact with the bottom of
the stencil-cylinder; and, flanking said roll and in frictional contact therewith
and with the interior of said cylinder, are additional rolls h¹ and h². The rolls
are provided with shafts h which project through slots at the lower ends of
depending blocks L, L' secured to the ends of the ink-chamber by screws g. The
block L is suitably perforated to receive the washer and the nut n³, and the
block L is suitably perforated to receive the pinions J and m. To the arms of
the spiders E and D are secured semi-circular cams f and c, respectively, which
serve to give to the inking-rolls an end to end movement as the stencil-cylinder
is rotated. As will be seen from Fig. 1, the cam f passes from its highest point få

page_text: near one end to a point flush with the inner surface of the arms of the spider E
and then passes exterior to the arm to which it is secured at its reduced end f.
The came is similar, but is set at an angle of about 180 degrees to the cam f
so that when a roll has been shifted in one direction to the full extent it is
ready to be engaged by the other cam and shifted back again.
The ink-pad and stencil are applied to the stencil-cylinder in the usual manner
and the printing effected by passing the paper to be printed upon between the
stencil-cylinder and a suitable impression-roll. Ink is distributed to the interior
of the cylinder and caused to exude through the minute perforations by means
of the ink-rolls. The amount of ink which reaches the rolls may be regulated
by turning the valve, through the medium of pinions m and J, sleeve J and
knob J, to cause a row containing the necessary number of holes to register with
the slot, which position is indicated by the corresponding index marking at the
knob. When the printing operation is concluded and it becomes necessary to
shut off the ink supply, this is accomplished by turning the valve to bring an
imperforate portion across the slot. This position is indicated in Fig. 5 by the
word off."
Slight changes in details of construction may be made without departure from
the invention as defined by the claims, and use of the construction set forth herein
in analogous machines is within the spirit of this invention.
Having now particularly described and ascertained the nature of the said inven-
tion, as communicated to me by my foreign correspondent, and in what manner
the same is to be performed, I declare that what I claim is :-
What I claim as new, and desire to secure by Letters-Patent, is:-
1-In a rotary stenciling machine, the combination with the frame, and stencil-
cylinder, of a stationary ink-chamber within the stencil-cylinder, a longitudinally
extending valve-chamber in communication therewith, and a rotatable valve
within said valve chamber provided with discharges of varying capacity, sub-
stantially as and for the purpose set forth.
2-In a rotary stenciling machine, the combination with the frame, and stencil-
cylinder, of an ink-chamber within the stencil-cylinder and supported on a shaft
stationary with relation to the frame, a longitudinally extending valve-chamber
in communication with the ink-chamber, a pinion equipped valve therein pro-
vided with discharge openings, a pinion on said shaft geared to the valve pinion,
and means for turning the pinion on said shaft and through its medium the
valve pinion and valve, substantially as and for the purpose set forth.
3-In a rotary stenciling machine, the combination with the frame, and stencil-
cylinder, of a stationary ink-chamber within the stencil-cylinder, a valve-chamber
in communication therewith provided with a discharge, and a hollow valve pro-
vided with discharges of varying ink-conducting capacity and rotatable to bring
the desired valve discharge into registration with the valve-chamber discharge
or to close the valve-chamber discharge entirely, substantially as and for the
purpose set forth.
4 In a rotary stenciling machine, the combination with the frame, and stencil-
cylinder, of a stationary ink-chamber, a longitudinally extending conical valve-
chamber in communication with said ink-chamber and provided with a longi-
tudinal discharge slot, a conical valve in the valve-chamber provided with a dis-
charge, means for holding the valve in close contact with the valve-chamber
walls, and means for rotating the valve to bring its discharge into registration
with the valve-chamber discharge slot, substantially as and for the purpose set
forth.
5-In a rotary stenciling machine, the combination with the frame, and sten-
il-cylinder, of a stationary ink-chamber within the stencil-cylinder, a valve-
chamber having conical walls and in communication with the ink-chamber and
provided with a discharge slot, a hollow conical valve within the valve-chamber
provided with rows of perforations or their equivalent, said rows being of different

page_text: ink-conducting capacity, means for holding said valve in close contact with the
valve-chamber, and means for rotating the valve to bring any row of perforations
into registration with said slot, substantially as and for the purpose set forth.
6-In a rotary stenciling machine, the combination with the frame, and
stencil-cylinder, of a stationary ink-chamber within the stencil-cylinder, an open-
ended conical-walled valve-chamber in communication with said ink-chamber
provided at the bottom with a longitudinal discharge slot, a hollow conical valve
within said valve-chamber provided with closed ends and with rows of perforations
of varying ink-conducting capacity, means for holding the valve in close contact
with the valve-chamber walls, and means for rotating the valve, substantially as
and for the purpose set forth.
7-In a rotary stenciling machine, the combination with the frame and sten-
cil-cylinder, of a stationary shaft-supported ink-chamber within the cylinder, a
valve-chamber in communication with the ink chamber, a hollow rotat-
able
valve provided with rows of perforations, or their equivalent,
of varying ink-conducting capacity, a pinion fixed to said valve, a pinion on the
shaft of the ink-chamber meshing therewith, a sleeve and. knob for rotating
the same provided with markings corresponding to said rows of perforations, and
an index or pointer on the end of said shaft by which to set the knob, sub-
stantially as and for the purpose set forth.
S-In a
rotary stenciling machine, the combination with the frame
and suitable journal-boxes, of sleeves extending through the journal-
'boxes, a stencil-cylinder supported by the sleeves between said boxes,
all ink-chamber within the stencil-cylinder provided with a rigidly
attached shaft projecting through the journal-boxes, an arm at one end of said
shaft fixing it in rigid relation with the frame, a pinion-equipped sleeve within
the cylinder-supporting sleeve at the opposite end of the shaft, a pinion-equipped
rotatable valve co-operating therewith, means for rotating the stencil-cylinder
through the medium of one of its supporting sleeves, and means for rotating and
indicating the position of the valve, substantially as and for the purpose set forth.
9-In a rotary stenciling machine, the combination with the frame, and
stencil-cylinder, of an ink-chamber within the stencil-cylinder, an inking-roll
beneath said chamber in frictional contact with the interior of the stencil-cylinder,
and cams on the inner surfaces of the ends of the stencil-cylinder for giving to
said roll an end to end movement as the stencil-cylinder is rotated, substantially
as and for the purpose set forth.
Dated this 28th day of June 1899.
BOULT & WADE,
Agents for the Applicant.