Improvements in Registering Sheets of Paper in Multi-colour Lithographic and Typographic Machines.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Registering Sheets of Paper in Multi-colour
Lithographic and Typographic Machines.
I, ETIENNE TAESCU, fils, of 40, Rue Pascal, Paris, in the Republic of France,
Engineer, do hereby declare the nature of this invention to be as follows: --
My invention relates to registering, or margining sheets of paper in printing
machines and it consists in simultaneously cutting out of the sheets, during
the printing of the first colour, the triangular indents which are to correspond
to the stop pins of the same shape and the round holes in which the points are
to enter. When all the sheets have been subjected to the first pull or impression
they are all cut out with triangular indents and with holes for the points, and
the cutting punches or perforators are then replaced by the stop pins and
points of the same shape which serve to register or margin the sheets for the
subsequent impressions.
The cylinder of the machine carries two tools for cutting out the triangular
indents; the punching tool slides in a dovetail guide which is fixed to the
cylinder by means of bolts engaged in elongated holes which allows of a certain
adjustment if the sheets are elongated after the first pull.
The punch has on its rear face lugs between which is pivoted an arm which
enters a recess beneath a clip or clamp.
When the cylinder turns with the sheet which has been introduced into the
machine for the first time, rollers against which passes the clamp cause the
punches which cut out the indents to be forced down.
The machine moreover comprises tools which cut out round holes in the sheets
to receive the conical points in the subsequent operations.
After the first pull the punching tools are replaced by stop pins of triangular
shape on which the sheet is registered or margined. These stop pins are by
preference of the shape of an inverted truncated pyramid so that when register-
ing or margining, the pin being lifted up, the sheet of paper rather tends to be
too advanced; in descending, the stud pushes back the sheet and places it properly
in position. The conical points still further assist in correcting the position.
With this system the registering or margining table does not require lateral
guide pins; if deemed necessary, however, one of such pins can be employed.
The triangular punches are provided with small lateral stop pins for preventing
the sheet to be registered or margined from advancing too far, in which case the
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page_text: punches would cut out a hole instead of making an indent in the edge of the
paper.
The punches are lifted by means of a spring.
The cutting out punches are preferably provided in front with a blunt edge.
To keep the stamped out pieces from interfering with the cutting, the hollow
bodies of the punches are provided with an india-rubber tube.
Dated the 5th day of Santambor 1808
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.
Improvements in Registering Sheets of Paper in Multi-colour
Lithographic and Typographic Machines.
I, ETIENNE TAESCH, fils, of 40, Rue Pascal, Paris, in the Republic of France,
Engineer, 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:
My invention relates to registering or margining sheets of paper in printing
machines and it consists in simultaneously cutting out of the sheets, during
the printing of the first colour, the triangular indents which are to correspond
to the stop pins of the same shape and the round holes in which the points are
to enter. When all the sheets have been subjected to the first pull or impression
they are all cut out with triangular indents and with holes for the points, and
the cutting punches or perforators are then replaced by the stop pins and
points of the same shape which serve to register or margin the sheets for the
subsequent impressions.
The accompanying drawing shews the application of my system to a printing
machine in transverse section at Figure 1, and in plan at Figure 2.
Figures 3, 4 and 5 represent respectively a front elevation, a sectional side
elevation, and a plan of the punch which cuts out the triangular indents.
Figure 6 represents a sectional side elevation of the triangular stop pin whereby
the margin is determined by means of the triangular indents.
The cylinder of the machine carries two tools M, M for cutting out the
triangular indents; the punching tool M (see Figures 3, 4 and 5) slides in a
dovetail guide N which is fixed to the cylinder by means of bolts engaged in
the elongated holes which allows of a certain adjustment if the sheets are
elongated after the first pull.
The punch has on its rear face lugs between which is pivoted an arm a which
enters a recess beneath the clip or clamp A.
When the cylinder turns with the sheet which has been introduced into the
machine for the first time, the rollers b against which passes the clamp A cause
the punches M which cut out the indents to be forced down.
The machine moreover comprises the tools Q, Q, which cut out round holes
in the sheets to receive the conical points in the subsequent operations.
I have not shown these tools in detail because I have already used them for
some considerable time.
After the first pull the punching tools M, M are replaced by stop pins P,
Figure 6, of triangular shape on which the sheet is registered or margined. These
stop pins are by preference of the shape of an inverted truncated pyramid so
that when registering or margining, the pin being lifted up; the sheet of paper

page_text: rather tends to be too advanced; in descending, the stud pushes back the sheet
and places it properly in position. The conical points still further assist in
correcting the position.
In Figures 1 and 2 the margining table is shewn at B; c is the taking off
apparatus or flyer carried by arms c pivoting at d.
With this system the registering or margining table does not require lateral
guide pins; if deemed necessary, however, one of such pins can be placed at e.
The triangular punches are provided with small lateral stop pins f for pre-
venting the sheet to be registered or margined from advancing too far, in which
case the punches would cut out a hole instead of making an indent in the edge
of the paper.
The punches are lifted by means of a spring g.
The cutting out punches are preferably provided in front with a blunt edge a.
To keep the stamped out pieces from interfering with the cutting, the hollow
bodies R of the punches are provided with an india-rubber tube S.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
The improved system of registering or margining sheets of paper in printing
machines consisting in cutting out of the sheets during the printing of the first
colour the triangular registering indents in the edges, and the holes in which
the points are to enter, the triangular stop pins which, at the following pulls
or impressions, replace the punches, being preferably inclined toward the
cylinder in order that the depression of the same may contribute to the exact
registering of the sheet to be printed as hereinbefore described with reference
to the accompanying drawing.
Dated the 5th dow of Tun 1900
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.