US1318862A - Planoriraph - Google Patents

Description

J. GILLOON.

PRINTING ROLLER.

APPLICATION FILED JUNE 13. 19:9.

1,318,862. Patented Oct. 14,1919.

- JOHN GILLOON, or NEW YORK, N. Y., ASSIGNOCR; To GILIJOON Bans, F, New roan-N. Y.

A FIRM.

P INTING-ROLLER.

Specification of Letters Patent.

Patented oct. 14,1919,

Application filed June 13, 1919, Serial No. 303,940.

To all whom it may concern:

Be it known that I, J OHN GiLnooN, a citizen of the United States, residing at borough of lWIanhatt-an, city, county, and State of New York, have invented a new and useful Improvement in Printing-Rollers, of which the following is a specification.

This invention relates to Wooden printing rollers such as are used to carry types for printing wall paper, fabrics, oil cloth, &c., and my improvements are directed to means for preventing the warping or distortion of these rollers by surface reinforcement which also protects their surfaces against the attacks of moisture.

Further my improvements comprise means for protecting the edges of types against undue wear which occurs at the type edges toward the roller ends, where the material being printed tends to round off the exposed type edges, so that these portions of the types become incapable of creatmg impressions in uniformity with the remainder of the printing, these worn edge portions giving either faint impressions or none at all.

The wooden rollers used in the particular branch of the printing art to which my improvement pertains, having type plates secured to their peripheral surfaces by means of brads or tacks, are washed with water after usage, and in a short time, through absorption of moisture, the rollers lose their straight cylindrical contour so that gaps are opened up between contiguous types which together form a pattern or grouped characters, and these gaps are indicated in the printed impression, thereby marring the elfect of the whole design.

In practice, it has been the custom, when restoring the cylindrical contour of the type bearing wooden roller, after it has become warped, to true it up in a lathe, and in doing this the types on portions of a roller are reduced in height. Since the types have an outward taper, given them to permit their withdrawal from the molds in their manufacture, the effect of turning or grinding down the types in this truing operation, is obviously to give those types printing faces of greater area than they had originally and causing them to print more heavily than the types which have been ground to a less degree or not at all. Therefore the trued roller is not comparable in its service to a roller that has been kept straight and prevented from warping. i I

In order to reinforce and protect the wooden roller-from; the effects of moisture, I wrap and secure a-thin sheetof metal, which may be aluminum, around the roller to glve 1t a metallic surface for the reception of the types, and I place a circular strip of metal, edgewise embedded within the roller, at each end thereof, to serve the twofold purpose of preventing the seepage of inoisturre QIlClWlSG between, the metal covering and the peripheral surface of the wooden roller; SL1(l .l116t2tl strip having its edge extended rad1al'ly to lie in the same concentric plane as the facesof the, types, whereby said metal -str1p serves as a protective border to prevent the application of a beveling or rounding off pressure upon the outside type edges in the process of printing.

Other features and advantages of my invention will hereinafter appear.

In the drawing:

Flgure l is an elevation of my improved roller.

Fig. 2 is a section on the line 22 of Fig. 1.

Fig. 3 is a section on the line 3-3 of Fig. 2.v

In carrying out my invention I take a thin sheet of metal 1 of suitable width and length, and .wrap it twice around the roller 2, so that the leading edge 3' of said sheet hes ]ust in advance of and above the edge 4 of the ply that is upon the roller, and I form a 10g 5 in said under ply of the sheet 1, to embed. the edge 4: and to provide a seat for the reception of said leading edge, whose upper surface may thus lie flush in the cylindrical contour of the metal coating thus provided. The sheet 1 is secured upon the roller as by tacking it thereto.

The types, as 6,. are secured 'upon the metal covering with tacks or brads that are driven through the double ply of metal sheet and into the wooden roller, in the same manner as when the wooden roller alone was employed.

At each end of the metal surfacing I provide 1n the wooden roller a concentric slit or groove 7, and in each of these slits I fit a flat, split ring 8, said rings being thus partly embedded within the material of the roller and partly extended radially therefrom, with their inner sides in abutting relation to the respective side edges of the metal surfacing, for which they thus form an end cap or cover, to prevent the endwise seepage of water between the metal sheet and the Wooden roller. It should be noted that the ring 8 extends radially from the roller sufliciently to present its peripheral edge in the concentric plane ofthe type faces, to thus form a boundary bearing to protect the outer edges of the types in their contacting pressure under the printing operation.

Variations may be resorted to Within the spirit and scope of my said invention and parts thereof used without others.

I claim 1. The combination, with a Wooden printing roller, of a thin sheet of metallic material wrapped more than once about said roller, the first wrap having a 0g over the under edge of said sheet to form a seat for the leading'edge of the second wrap, whereby the outer surface of said material is in true cylindrical form, to carry the type.

2. The combination, with a wooden printing roller, of a metallic surfacing sheet for said roller, types carried thereby, and op posite metallic rings, embedded in said roller, in abutting relation with the respective side edges of said sheet, to prevent seepage of moisture between said sheet and the wooden roller. 3. The combination, With a Wooden printing roller, of a metallic surfacing sheet for said roller, types carried thereby, and 0pposite metallic rings, embedded in said roller, in abutting relation with the respec: tive side edges of said sheet, to prevent seepage of moisture between said sheet and the wooden roller, the peripheral edges of said rings lying in the same concentric plane as the surfaces of said types, as a protective bearing for their outside edges.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses,-this 10th day of June, 1919.

JOHN GILLOON. WVitnesses:

F. W. BARKER, RUTH MIKOLA.

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

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