US727307A - Four-color platen-press. - Google Patents

Description

No. 727,307. PATENTED'MAPYBJ 190s. J. N. DEPPERT & A. SEBLIG.

FOUR COLOR PLATEN PRESS. APPLICATION nnnnnov. 11, 1902.

H0 MODEL.

lltirrnio Sterne {Patented May 5, 1903.

ATENT Grrrcn.

FOUR-COLOR f-LATEN-PRESS.

SPECIFICATION forming part of Letters; Patent No. 7 27,307, dated May 5, 1903. Application filed November 11 ,1902. Serial No. 130,915. (No model.)

To all whom it may concern: 7

Be it known that we, JOHANN NICQLAUS DEPPERT and ADOLF SnnLIe, subjects of the Emperor of Germany, residing at Printworks, Mannheim,Grand Duchy of Baden,Germany, have invented certain new and useful Improvements in Four-Color Platen-Presses, of which the following is a specification.

The object of the present invention is to print with several colors in succession in the same manner as in platen-presses. This is accomplished by the use of a vertically-rotatable prismatic bed, each side of which, besides the form, has a color apparatus for supplying that printing-face which for the time being is momentarily opposite the form which is being printed.

In the drawings, Figure 1 is a side elevation. Fig. 2 is a horizontal section over the rotating device of the bed. Fig. 3 is a front view with the platen removed and partly in section at the upper part of the bed.

The wheel Ct gears in the usual manner with a pinion b on the driving-shaft and produces through the link cthe pressure of the platen against the form d in the bed. The bevelpinion e on the driving-shaftf gears with the bevel-wheel g and operates the pawl 7t through the arm 1', so that at one half-revolution of the bevel-wheel g the ratchet-wheelie, and conseqently the bed, is caused to make a quarter-revolution, while during the other halfrevolution the pawl 7t slides back into the next tooth, when the bed remains stationary Simultaneously with to meet the pressure. the pressure of the platen the inking takes place of the type opposite to that which is being printed. This is accomplished through the link Z (attached to the wheel a and hinged to the an arm a, secured to the shaft m) slightly turning the shaft m, when the arm 0 (whose length is automatically adjusted by a spring) is caused to engage with its hooked end into the hook p of the inking apparatus and pulls the latterdown over the type. On the rise of the arm 0 (and by the operation of the balance-weight u) the inking apparatus again goes to the top.

The inking-rollers r, 4?, T and 1' of the inking apparatus are spring-mounted in the usual manner on rising and falling slides g.

In order that the inking of the type may take place evenly and the ink may not all be left on the upper part, swells s are provided on both the slides of the two lower inkingrollers 1- and 1- which keep them from the upper part of the type and cause them to only ink the lower part, while the inking of the upper part is efiected by, the two upper rollers 1" T The four color devices are suspended from rolls by chains t, attached to balanceweights u. Each balance-weight is provided with a drop-hook which on the rise of the weight engages with the toothed wheel to, se-

cured to the ink-distributing plate '1) and intermittently turns the latter, and with it the plate, while on the descent of the weights to the drop-hook clears itself and passes the tooth-wheel without acting on it. The gripper 00 is held firmly on the paper by a spring during the printing of the four colors and is only lifted after the four colors have been printed by a cam-like surface at the corner of, the bed, (after the fourth color,) up and down which a bowl on one arm of an L-lever is caused to travel, so as to operate the toothed segment on the other arm, thereby rotating a pinion gearing therewith. This pinion is on the axis of the gripper, and as it turns in one direction or the other the gripper is depressed or raised.

In order to construct a press for more than four colors, the-prism which forms the bed is madewith a correspondingly greater number of sides.

We claim- 'A multicolorplaten-press comprising a bed having a plurality of faces, with means for turning the said bed, a platen associated with said bed, Vertically-movable inking-rollers to ink the forms on the said bed,- a counterbalance-weight for the said rollers, an ink-distributin g plate, a toothed wheel in connection therewith and means for operating the toothed wheel and ink-distributing plate from the counterbalance-weight, substantially as described. w

In witness whereof we have hereunto set our hands in presence of two witnesses.

J OHANN NICOLAUS DEPPERT. ADOLF SEELIG. Witnesses:

JACOB ADRIAN, FERDINAND SOHMITZ.

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