Improvements in Hektographic Copying Apparatus.
Year: 1898

page_text: Date of Application, 31st Aug., 1898-Accepted, 22nd Oct., 1898
COMPLETE SPECIFICATION.
Improvements in Hektographic Copying Apparatus.
I, ERNST ARM, of 1, Bruchsalstrasse, Wilmersdorf, near Berlin, Germany, Steno-
grapher, 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:-
This invention relates to apparatus for producing large numbers of hektographic
copies automatically by mechanical means. As compared with copies produced
according to the methods heretofore known, copies obtained by this means are
distinguished by absolute uniformity, and, as will be obvious, a much larger
number of copies can be produced in a given time by means of this new apparatus,
whilst the hektographic substance is naturally not so liable to damage from wear
as when the copies are made by hand.
One arrangement of apparatus in accordance with this invention is illustrated
in the accompanying drawings in which Fig. 1 is an elevation partly in section,
and Fig. 2 a plan view with the top of the casing removed.
Within the casing w there is mounted on a shaft y a roller a which can be
rotated (in the direction of the arrow) by means of a crank z. This roller is
covered on one portion of its periphery with a hektographic substance a¹, and is
also provided with a through groove t, the purpose of which will be hereinafter
explained. In contact with the roller a there is provided a roller 6 which is also
in contact with another roller c. The two last mentioned rollers are mounted at
their ends in hinged frames j which rock about an axis d and are constantly
pressed by springs g towards the roller . whereby the roller b is caused to bear
normally against the said roller a. The roller c pressed by means of springs i
against the roller b. Below the point of contact of the two rollers and there
is provided a discharge passage v.
On the front side of the casing there is arranged a feed table g adapted to pivot
about a spindle whilst at its lower end u it is slightly curved to correspond in
shape with the periphery of the roller a. This table has connected to it the
upper ends of two springs m the lower ends being attached to a long beam that
connects two angle pieces n n that are provided one on each side of the table.
These angle pieces n are adapted to pivot about a pin or bar f and are provided
at their upper ends with a nose against which can operate a lever fixed to the
roller a.
There are pro-
A roller e is fixed in a suitable manner to the angle piece n.
vided two guiding or deflecting sheet metal plates and k, of which the first, 7, is
arranged in front of the roller b, and k is arranged just at the place of contact
of the two rollers b and c.
The mode of operation of the apparatus is as follows:-
First, the roller a is provided with hektographic material that bears the writing
or other representation, and any desired number of sheets are placed upon the
table q which is then pressed downwards; whereupon the sheets slide down under-
neath and past the roller e until they strike against the deflecting plate 1. As
soon as the pressure upon the plate is removed, the table and consequently also

page_text: the sheets thereon are pressed against the roller e by the action of the spring m.
Then rotary motion is given by means of the crank, and as the roller a rotates,
the lever pacts upon the nose o and causes the angle piece to turn on its pivot f
the spring m being placed under strain, and the sheet which is just about to be
printed is brought into contact with the hektographic plate. The printing is
effected and the sheet which adheres to the hektographic mass is carried along
by the roller a in consequence of the continued motion of the crank, until the
sheet has reached the roller b. The arrangement is such that at this point, the
groove t comes into operation and the sheet is pressed to some extent into the groove
by the said roller b. The result is that the sheet now ceases to follow the peri-
phery of the roller a, and takes up the motion of the roller b, whereupon it is
seized by the rollers c and band is pushed into the discharge shoot u.
deflecting plate k more completely prevents any possible further movement of
the sheets around the periphery of the roller a.
The
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. Apparatus for the automatic production of any desired number of lekto-
graphic copies, comprising a roller a which is provided with the hektographic
material and against which the several sheets are automatically pressed by
the rotation of the roller, the arrangement being such that the sheets are led off
by means of a pair of rollers b and c, which, in co-operation with a groove t,
provided in the roller a, act to draw the sheets away from the periphery of the
said roller a.
2. Copying apparatus constructed, arranged and operating substantially as
hereinbefore described with reference to and shown in the drawings.
5646
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.