Improvements in and relating to Stencilling Machines.
Year: 1898

page_text: Date of Application, 8th Dec., 1898-Accepted, 11th Feb., 1899
COMPLETE SPECIFICATION.
Improvements in and relating to Stencilling Machines.
A communication from abroad by FRANK EDWARD CLARK, Manufacturer, a Citizen
of the United States of America, residing at 417, North Avenue, in the
City of Bridgeport, County of Fairfield, and State of Connecticut, United
States of America.
I, PETER JENSEN, of No. 77, Chancery Lane, 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 ascertained in and 'by the
following statement: ---
i
This invention relates to certain improvements in stenciling machines, but
more particularly refers to devices of this description which are operated by hand.
The object of the invention is to provide an exceedingly simple and effective
machine of this class, and to do away entirely with the necessity of handling
the stencil itself, and with these ends in view the invention consists in certain
details of construction and combination of parts such as will be hereinafter fully
set forth and then specifically be designated by the claims.
In the accompanying drawing, which forms a part of this application-
Figure 1 is a sectional elevation of my improvement;
;
Figures 2 and 3 are end elevations thereof showing respectively the positions
of the device prior to and immediately after operation, and
Figure 4 is a detail broken elevation showing particularly the construction
employed for adjusting the cylinders.
Similar numbers of reference denote like parts in the several figures of the
drawing.
Heretofore, stenciling machines have been provided in which two telescopic
cylinders were employed the inner one of which acts as an ink reservoir while
the cylinders are provided with perforations through which the ink may flow
to the pad which latter surrounds the outer cylinder, and my improvement aims
to utilize this general construction in a most simple and effective manner, and
will be best understood from the following description.
1, 2, are cylinders contained one within the other in such manner as to be
capable of a free rotary movement, said cylinders provided each with perfora-
tions 3, 4, respectively for the purpose presently explained, and around the outer
cylinder 2 a suitable ink pad 5 is secured.
The inner cylinder 1 is slightly longer than the outer cylinder and the pro-
jecting portions of said inner cylinder are threaded, and end caps 6 are driven
on these threaded portions.
7 are hubs which are tapped within these end caps, and 8 are round spindles
driven firmly within these hubs around which spindles roller handles 9 are loosely
supported, so that it will be clearly understood that when the device is rolled
upon a stencil these handles will turn freely upon the spindles. From the
periphery of the outer cylinder 2 at each end thereof pins 10 extend upwardly
through elongated notches 11 in the inner edges of the caps 6, and by throwing
DQ17

page_text: these pins against opposite walls of these notches the outer cylinder is turned
so as to bring the perforations 3, 4, into or out of registration. For convenience
I place near one wall of the notch the letter O and near the other wall the
letter C, so that if said pin is in position near the wall marked "O" it will be
understood that the perforations are open, or. in other words, in registration,
and if such pin is near the wall marked "C" it will then be understood that the
perforations are not in registration but are closed.
In using my improvement, the stencil is placed upon the paper in the usual
manner, and my device is rolled over the same, whereupon said stencil will
adhere firmly to the pad in close contact around the periphery thereof, so that
thereafter it is not necessary to handle the stencil at all. But it then becomes
essential to provide some means for properly determining the extent throughout
which the pad must be rolled to effect the proper printing in the proper place
upon the sheets of paper, and I have therefore made provisions for this, which I
will now explain.
Around each of the hubs 7 are suspended legs 12, 13, the former of which
is stationary while the latter leg is capable of a free swinging movement, and
is provided with a lateral extension 14 through which are perforations 15. 16
are hubs integral with the outer faces of the caps 6, and in these hubs are
threaded holes 17. In adjusting the position of the leg 13 the same is swung
around until any desired one of the perforations 15 registers with the hole 17,
and a set screw 18 is then driven through said perforation and hole so as to
firmly hold the leg in this adjusted position. Of course there may be any
desired number of perforations in the extension 14, but their number and arrange-
ment are the same with respect to each leg on opposite sides of the device, so
that if each leg is set in adjustment by driving the set screw through the third
perforation for instance, uniform stops will be provided at each end of the device.
Referring particularly to Figures and 3, it will be noted that these lega
are separated, or, in other words, the movable legs (only one shown) are in
adjusted position. In Figure 2 the device is ready for operation, and,
placing the hands upon the handles 9 the machine is rolled over the
stencil, until the leg which in Figure 2 is elevated in the air, strikes against
the paper, table or other support, when the device is then raised bodily in the
air so as to rest upon these legs at either end, and the printed sheet of paper
then removed; the device is then allowed to again rest upon the paper and a sub-
sequent printing is effected by the reverse or return movement of the device, at
the end of which movement the machine can again be raised bodily in the air
upon the other legs as supports.
It will thus be seen that I insure the rolling of the machine throughout the
prescribed limits by means of these legs, and that the latter also afford supports
for the machine so that the printed paper can be readily removed. I prefer to
insert within the bottoms of these legs rubber feet 19, both for the purpose of
affording a good grasping surface, and also to prevent said feet from marring
or mutilating the table, paper or other support.
By unscrewing one of the hubs from one of the caps the ink may be renewed
in the cylinder, or the latter may be cleansed for any obvious purpose.
I have heretofore described the caps and the hubs as two separate parts, but
they can be made in one single piece if desired, since they are tapped one within
the other merely for the sake of convenience in filling the ink reservoirs, and I
therefore do not wish to be limited in this respect.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. In a stenciling machine, the combination of the telescoping cylinders provided
with perforations capable of registering when said cylinders are turned one upon
the other, the ink pad secured around the periphery of the outer cylinder while

page_text: the inner cylinder affords the ink reservoir, the caps which close the ends of the
cylinders and are fastened directly to the inner cylinder, the hubs secured within
said caps and having fastened thereto round spindles, and the handles loosely
supported upon said spindles, substantially as set forth.
2. In a stenciling machine, the combination of the two cylinders contained
one within the other and capable of a free rotary movement, the ink pad secured
around the outer cylinder while the inner cylinder affords the ink reservoir, the
end caps secured to the inner cylinder at each end thereof and provided with
elongated notches, the pins which project from the outer cylinder into said
notches, the hubs rigid with said caps and having extended therefrom round
spindles, and the legs suspended from said hubs and capable of adjustment,
substantially as set forth.
3. In a stenciling machine, the combination of the telescoping cylinders pro-
vided with perforations capable of registration, the ink pad secured around the
outer cylinder while the inner cylinder holds the ink reservoir, the cap secured
to the ends of the inner cylinder, the hubs rigid with said caps and provided
with round spindles extended therefrom, the handles loosely supported around said
spindles, the stationary legs supported around said hubs, the adjustable legs
also supported around said hubs and capable of a free swinging movement
and provided with perforated extensions, and means for securing the adjustable
legs in any desired position, substantially as set forth.
Dated this 8th day of December 1000
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.