US1036201A - Ink-roll for printing-presses. - Google Patents

Description

s. ELLIOTT INK ROLLFOR PRINTING PRESSES.

APPLICATION FILED MAILSO, 1910.

1 ,O36,201 Patented Aug. 20, 1912.

Fiji

' cylindrical wall.

STERLING ELLIOTT, OF NEWTON, MASSACHUSETTS.

INK-ROLL FOR PRINTING-PRESSES.

Specification of Letters Patent.

Patented Aug. 20, 1912.

Application filed March 30, 1910. Serial No. 552,286.

. To all whom it may concern:

Be it known that I, STERLING ELLIOTT, of Newton, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Ink-Rolls for Printing- Iresses, of which the following is a specification.

This invention relates to ink-rolls for printing-presses, and has for its object to provide a hollow roll having small perforations in its cylindrical wall, with improved means for forcing the ink contained in the.

roll through the perforations, whereby it may be delivered at the surface of the roll in minute, well regulated or measured quantities, especially well admitting of its being evenly distributed over said surface.

The invention consists in the provision of a rigid frame-bar which is arranged coaxially within and radially with respect to the hollow cylinder or roll and extended lengthwise thereof, which is adapted to work in the ink contained in said roll said frame-bar having a beveled edge which terminates at the cylindrical wall thereof, its bevel affording a converging space between the frame-bar and wall for the ink, from which the ink is forced through the perforation in the wall by a movement of one part relative to the other. Such a roll, when removed from the press, while filled or par tially filled with ink, may be laid away for future use, the ink remaining in the roll, which latter serves as a receptacle therefor, and which is sufficiently tight to prevent undue evaporation of the ink.

Figure l is an end view of an ink-roll embodying this invention. Fig. 2 is a plan view of the ink-roll shown in Fig. 1, Fig.

3 is an enlarged transverse section of the ink-roll, Fig. 4 is an enlarged longitudinal vertical section of the ink-roll. Fig. 5 is a plan view of the ink-roll having modified means for operating it.

The ink-roll comprises a hollow cylinder a, of any suitable length and size, having a plurality of small perforations a in its As here shown, these perforations are arranged in a zig-zag or tortuous line lengthwise the cylinder, as contrasted to being arranged side by side in a straight line, thereby better admitting of an even distribution of the ink upon the surface of the roll, butmy invention is not limited to the arrangement of the perforations.

One end of the cylinder is closed ,by a circular-plate b, which, as here shown, has a center-hole b at its interior, and a centrallydisposed stub-shaft b at its exterior. The other end of the cylinder is closed by a circular plate (7, having a large circular hole through it adapted to receive a removable circular plate (1', which serves as a cover or closing-plate for the hollow cylinder by which access may be had to the interior thereof. Said plate d has a center-hole through it, and has a boss d on its outer face around said center-hole, which may be made square, adapting it to receive a wrench.

A rigid frame-bar is arranged co-axially within and radially with respect to the hollow cylinder and extended lengthwise thereof, preferably from end to end, and, as here shown, is made bale-shaped and comprises a bar e and arms 6, e, at its opposite ends arranged at right angles to the bar and in parallel and made of equal length, and each provided with an outwardly extended gudgeon, as 0 c The elements composing the frame-bar may be integrally formed. so as to produce a rigid structure, but as the essential object is to provide a frame-bar which is not movable in a radial direction with respect to the cylinder so that the ink is positively expelled, it is obvious that it may be otherwise constructed so as to accomplish this result. Said frame-bar is arranged with its arms radially disposed in the hollow cylinder and its gudgeons projected into the centerh oles in the end plates and its bar 0 located adjacent the wall of the cylinder. The bar 0 has a beveled edge, see Fig. 3, which terminates at the wall of the cylinder, to form between said beveled edge and said wall a converging space which receives the ink, even though a small quantity only is contained in the roll. The framebar is thusadapted to be immersed in and to work in the ink contained in the cylinder.

In one embodiment of my invention. see Figs. 1 to 4, the frame-bar is designed to be held stationary, and the roll to be revolved, and, to accomplish these results the gudgeon e is engaged and held by aclamp f; and a ratchet-wheel c is secured to the stub-shaft N, which is engaged by a spring-pressed awl 0 arranged on a pawl-carrying arm 0 adapted to be oscillated by any suitable means. Referring to Fig. 3, wherein the frame-bar is thus held stationary, and the roll is revolved in the direction of the arrow, the ink which is contained in the converging space between the beveled edge of the bar 6 and the wall of the roll is forced through the small perforations in said wall, and as a result, small measured volumes of ink are caused to project from the surface of the roll, to be distributed thereon by any usual or suitable distributing-roll or device, not shown. In this instance the roll is revolved in a direction to the apex of the converging space. Or, both the roll and frame-bar may be revolved, but at different speeds, whereby a movement of one relative to the other is produced, and, as shown in Fig. 5, the roll has secured to its shaft b a toothed-gear wheel 9, which is engaged by a toothed-gear wheel secured to the shaft 9 and another toothed-gear wheel 9 smaller in diameter than the gear-wheel g is secured to the gudgeon e of the frame-bar, which is engaged by a toothed-gear wheel 9* secured to said shaft 9 In this embodiment of my invention both parts revolve, but at different speeds, hence the roll has a movement relative to the frame-bar, whereby the ink is forced out of the converging space through the small perforations, in the same manner as shown in Fig. 3. This means for revolving both parts but at different speeds is contained in my application #606,708, filed February 6, 1911. As a relative movement of one part with respect to the other is all that is required to force the ink from the converging space through the perforations, I do not desire to limit my invention to the means here shown for accomplishing such relative movement.

As the perforations in the roll 'are very small, and the ink usually employed quite thick, the ink will not pass through said perforations, unless forced, but will more or less clog the perforations, so that when the roll is removed from the press and laid away for future use, the ink contained therein will not evaporate to any appreciable extent. In the construction of the roll I find it to be of advantage to fit the closingplate, as (1, into a large center-hole in the end-plate 05, so that, when removed, a fixed end-wall of considerable height is afforded to prevent the ink running out while filling the roll; and said fixed end-wall is also of advantage when the frame-bar extends from end to end of the roll.

I claim I 1. An ink-roll for printing-presses, consisting of a hollow perforated cylinder, the ends of which are adapted to be closed, a

rigid frame-bar arranged co-axially within and radially with respect to the cylinder and extended lengthwise thereof, which is adapted to work in the ink contained therein, said frame-bar having a beveled edge terminating at the wall of the cylinder, which forms a converging space between the frame-bar and cylinder for the ink, from which the ink is forced through the perforations in the cylinder by a movement of one of said parts relative to the other, substantially as de framear and cylinder for the ink, which is forced through the perforations in the cylinder as the cylinder revolves, substantially as described.

3. An ink-roll for printing-presses, con sisting of a revoluble hollow perforated cylinder, closing means at the ends thereof having center-holes, arigid frame-bar arranged within and disposed radially with respect to the cylinder and extended lengthwise thereof and adapted to work in the ink contained therein, having 'gudgeons at its ends adapted to enter the center-holes in said closlng-means, and having a beveled edge terminating at the wall of the cylinder, which forms a converging space between the frame-bar and cylinder for the ink, from which the ink is forced through the perforations in the cylinder by a movement of one of said parts relative to the'other, substantially as described.

4. An ink-roll for printing-presses consisting of a. revoluble hollow perforated cylinder having at one end a fixed closingplate provided with a center-hole and at the other end a removable closing-plate having a center-hole, a frame-bar contained in and extended lengthwise said cylinder and adapted to work in. the ink contained therein, having gudgeons at its ends adapted to enter respectively the center-holes in the closing-plates, and having a. beveled edge terminating at the wall of the cylinder, which forms a converging space between the framebar and cylinder for the ink, from which the ink is forced through the perforations in the cylinder by a movement of one part relative to the other substantially as described. k

5. An ink-roll for printing-presses consisting of a revoluble hollow perforated cylinder havin at one end a fixed closing-plate provided with a center-hole, and at the other end a fixed plate having a large center-hole, and. a removable closing-plate for said large center-hole rovided with a center-hole, and a framear contained in the .cylinder'having gudgeons at its ends adapted to enter the center-holes in the closingplates and having a beveled edge terminating at the wall of the cylinder, affording a converging space between the frame-bar and i cylinder for the ink, which is forced through the perforations in the cylinder by a movement of one part relative to the other, substantially as described.

6. An ink-roll for printing-presses consisting of a hollow perforated cylinder, the ends of which are adapted to be closed, a rigid bail-shaped frame-bar arranged coaxially within and radially with respect to the cylinder and extended lengthwise thereof and adapted to work in the ink contained therein, said frame-bar having a beveled edge terminating at the wall of the cyl-- inder to form a converging space between the frame-bar and cylinder for the ink, from which the ink is forced through the perforations in the cylinder by a movement of one part relative to the other, substantially a described. 4

7. An ink-roll for printing-presses, consisting of a revoluble hollow perforated cylinder, closing means at the ends thereof having center-holes, a frame-bancontained in and extended lengthwise the cylinder and adapted to work in the ink contained therein comprising a pair of arms having gudgeons at their inner ends to enter said center-holes and a bar connecting said arms at their outer ends, having a beveled edge, said arms being radially disposed in the' cylinder and supporting the bar with its beveled edge terminating at the wall of the cylinder, to form a converging space between said bar and the wall of the cylinder for the ink, from which the ink is forced through the perforations in the oylinder by a movement of one part relative to the other, substantially as described.

8. An ink-roll for printing-presses, consisting of a revoluble hollow perforated cy1- inder having means to close its ends, a stationarily supported rigid frame-bar arranged co-axially within and radially with respect to the cylinder and extended lengthwise thereof and adapted to work in the ink contained therein, said frame-bar having a beveled edge terminating at the wall of the cylinder to form a converging space between the frame-bar and cylinder for the ink, from which ink is forced through the perforations in the cylinder as the cylinder revolves in a direction toward the apex of the converging space, a ratchet-wheel secured to the cylinder and an oscillating wall of the cylinder which forms a converging space between the frame-bar and cylinder for the ink, means to hold the framebar stationary, and means to revolve said cylinder in a direction toward the apex of said converging space to force the ink from said space through the perforations in the cylinder, substantially as described.

10. An ink-roll for printing-presses, consisting of a hollow perforated cylinder having means to close its ends, a frame-bar con tained in and extended lengthwise said cylinder, and adapted to work in the ink con tained therein, having a beveled edge terminating at the wall of the cylinder which forms a converging space between the frame-bar and cylinder for the ink, means to hold the frame-bar stationary, and intermittingly operated means to revolve said cylinder in a direction toward the apex of said converging space to force the ,ink from said space 'through the perforations in the cylinder, substantially-as described.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

STERLING ELLIOTT.

itnesses:

B. J. Norms, H. B. DAVIS.

Images