US1072095A - Inking device for printing-presses. - Google Patents

Description

A. B. DAVIS & A. B. LEFFEL. INKING DEVICE FOR PRINTING PRESSES.

APPLICATION FILED DEO.19,1911.

1 ,072,095 Patented Sept. 2, 1913.

UNITED STATES PATENT OFFICE.

ARTHUR B. DAVIS AND ANGEL 1B. LEFFEL, 0F SPRINGFIELD, OHIO.

INKING' DEVICE FOR PEINTING-PRESSES.

Specification of Letters Patent.

Application filed December 19, 1911.

Patented Sept. 2, 1913.

Serial No. 666,657.

To all whom it may concern:

'Be it known that we, Airrmm B. DAVIS and Aiucin, B. Lnrrnn, citizens of the nited States, residing at Springfield, in the county of Clark and State of Ohio, have invented new and useful Improvements in Inking Devices for Printing-Presses, of which the following is a specification.

The general object of the invention is to increase the efliciency of the inking devices of printing presses by so constructing these devices as to render them less susceptible to the heat, caused by frictional contact with the printing apparatus per 86, and consequeut wearing out after a relatively shortperiod of use.

Other objects will appear and be better understood from the following description taken in connection with the accompanying drawin s, in which Figure 1 is a perspective of one embodiment of the invention also showing a. sufficient portion of a printing press to illustrate one application of our device. Fig. 2 a detail partly in section of one of the supports for the distributing apparatus. Fig. 3 is a sectional detail of the belt.

In carrying out our invention We arrange the inking apparatus in such relation to the ,printing apparatus or element, as to effect frictional contact between the parts so that movement will be imparted to the inking device by the movement of the printing apparatus.

lVhen arranging the device for use with a reciprocating printing apparatus we generally, but, of course, not necessarily, provide a multiple series of rolls and also prefer, although, of course, it is by no means necessary, to arrange the rolls 9-9 of each series in vertical alinement and to further arrange each series spaced from the adjacent series. lVe also form circular enlargements 10 on the lower rolls of each series to travel on the bearers 11 which are arranged on the bed and extend type-high or substantially so. The rolls 99 of each series are then connected by an endless belt or apron 12, the lowest portion of whose surface contacts with the printing surface afforded by the material 6 in the bed 5. In this connection it may be stated that preference is given to a structure wherein the surface area of each belt corresponds approximately to that of the printing surface whether such printing surface be plane or circular as shown in Figs. 1 and 3 respectively. This construction., namely the relative areas of the inking and printing surfaces, is important since it obviates, to an appreciable extent, the loss heretofore incurred in maintaining inking devices made up of a plurality of small rolls arranged to contact directly with the printlug surface. To further amplify the statement of advantage of my device, over an inking surface made up of a plurality of small rolls, let the number of revolutions made by each small roll during one reciprocation-or rotation of the aforesaid printing surface be considered. Thus it is seen that the amount of wear on each roll is due to each point on the surface thereof contacting, for a relatively great number of times with the printing surface during one reciproca- ,tion or rotation thereof. Moreover, and owing to the friction this frequent contact soon raises the temperatures of the inking rolls to an appreciable extent, in fact to such an extent that it is invariably necessary to stop the press at relatively short intervals during what is known as a long run. Consequently, since the very construction of the inking rolls prohibits their losingany appreciable amount of heat through radiation while in use, the result is that the composition which forms the body of these rolls is soon consumed or pitted by heat, thus rendering the rolls unfit for applying ink to the printing surface. \Vith our construction, however, these defects are, as be fore stated, practically eliminated since the area of the inking surface insures that only one point thereof will contact with the print-- ing surface during one revolution or reciprocation thereof, and moreover, the inking surface (considering the belt as a whole) is especially adapted for losing heat by radiation.

. init of the boxes approaching each other sufiiciently near to permit one of the trunnions of one of the rolls to be lifted from the recess in which it is journaled.

In Fig. 1 the ink is supplied to the inking devices by the ink plate whose surface contacts with the inking device on each recip- I rocation of the bed. If there is but one ink plate the relative positions of the belts with respect to the same will be such that both will receive a supply of ink on each reciprocation of the bed, or when there is a plate 'at each end of the bed either or both plates may contact with each belt as the bed reciprocates.

22 indicates a series of distributing rolls positioned between the belts 1212 and arranged so as to contact therewith. The trunnions 23 of these rolls are arranged in cross bars 24; yieldingly held by springs 25 in the standards. As shown in Fig. 1 a series comprising three of these rolls is employed wherein the intermediate roll extends horizontally and the outer rolls extend obliquely to the intermediate roll so that when the belts 1212 travel in one direction during one movement of the bed and then travel in the opposite direction during the return movement of the bed, these different "directions of movement of the belts will cause the outer rolls to change their positions with respect to the intermediate roll at each different movement of the belts.

This will have the eiiect of causing an even on opposite sides of said frame, bearing boxes extending laterally from said standards and adjustable relative to each other, an inking device including a plurality of rolls mounted'in said boxes, cross bars yieldably held in said standards, and distributing rolls supported by said cross bars and mounted between said inking rolls.

2. In a printing press, the combination with the press frame; of standards arranged on opposite sides of said frame, an inking device including a plurality of rolls adjustably mounted in said standards, cross bars yieldably held in said standards, and a plurality of superimposed distributing rolls supported by said cross bars, certain of said distributing rolls being arranged obliquely to the others.

In testimony whereof we afiix our signatures in presence of two witnesses.

ARTHUR B. DAVIS. ANGEL B. LEFFEL. Witnesses:

ROBERT S. OLINGER, C. S. OLINGER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. O.

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