US887438A - Stenciling-machine. - Google Patents

Description

No. 887,438. PATENTED MAY 12, 1908.

- S. T. SMITH, JR. STENGILING MACHINE.

APPLIOATION FILED FEB. 12. 190B.

C; gVenfo/s l 27, A flame UNITED STATES PATENT orinon.

WRITER COMPANY, or NEW YORK, N.

Y., A CORPORATION OF NEW JERSEY.

STENCILING-MAGHINE Specification of Letters Patent.

Iatented May 12, 1908.

Application filed February 12, 1908. Serial No. 415,516.

To all whom it may concern:

Be it known that I, STEPHEN T. SMITH, Jr., a citizen of the United States, residing in Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Stenciling- Machines, of which thefollowing is a specification.

This invention relates to stenciling machines forusewith ty ewrittenstencils, and more particularly to t e means for delivering the sheets from the machine.

Thestencil is usuall' wrapped around an inking cylinder, and t e sheets to be stenciled upon are passed between said cylinder and a pressure roll. Themachineis usually equipped with stripping tongues placed at.

the ends of the stencil cylinder", to lie between the stencil and the sheets to be sten oiled upon, so as to separate'or strip the lat ter gently from the stencil sheet, as the cylinder revolves; The stripping is rendered necessar because of the adhesive character of the in usually employed. In some cases the sheets to be stenciled upon are too narrow to .be engaged by .both of said stripping tongues; and it is also sometimes desired to pass narrow. sheets through the middle portionof the machine, so that their side edges are. not caught-by either of the stripping.

tongues.

The object of my invention isto provide simplefinexpehsive and effective means for stripping narr'owsheets from a'stencil cylin-. der, without however rendering the machine less vaiuable for use with wide sheets.

At delivery sidev of .the cylinder, I

mount a pair ofstripping fingers Whichex-.

tend'tcwards each other along the cylinder, and each of which is longitudinallyfiu-ted with its concave side lying close to the cylinder, so that its'convex side may insinuate itself between the cylinder and the leading edgeof the paper which has been sten'ciled upon, asit emerges. from the machine, and

gently stri der. 1 Each the paper from' the stencil cylinof .said strips is swiveled at its outer end, so that it may be adjusted at different an les relatively to the cylinder, to

obtain the. est results, and also so that it may be. swung back entirely out ofthe way when wide sheets are being run through the machine.

My invention shown applied to stenciling machines of. thekind disclosed in United States Patent No 832,217 of October 2., 1906, in which stripping tonguesior wide sheets of paper curveunder the stencil cylinder past the ends of the pressure roll; and my novel stripping fingers are preferably pivoted to the rear ends oisaid tongues.

Figure 1 is a sectional diagrammatic elevation of a stenciling machine of the kind disclosed in said patent, .showing the novel stripping finger in full lines in working osition, and in dotted lines in a position 0 disuse. Fig. 2 is a-plan of the stripping de- Vices. I v

The stenciling machine usually comprises a stencil cylinder 1, a pressure roll 2 a feed board 3 and a directrix plate 4 curving around the underside of the cylinder at the introductory side thereof. A narrowsheet 5 to be stenciled upon is shown as passing narrow to be enga ed by the stripping tongues 6, 7 usually p seed at the ends of the c linder 2, as set forth in said patent. The side. borders of the narrow sheet 5 are engaged by the sides of a pair of stripping fingersS which extend toward each other along the cylinder 1. Each of the fingers is fluted, and its concave side lies close to the cylinder and near the pressure roll 2, as at Fig. 1; the lower edge 9 of each iin er being close to the cylinder, so as to enter etween the cylinder and the leadin edge of the sheet and strip the latter there om; the convex outer sideof the stripper acting like a wedge for this pur- 6, 7 the strippers bein swiveled at. their .outer ends to the rear one s of saidtongues as at 10, so that the strippers may be adjusted, as for instance to the dotted line position, as at Fig. 2, to suit di'fl'erent kinds. of sheets bei run through theinachinc; and aiso to enab e the strippers to be s\ vun rearwardly entirely out of the way, as at lfig. 1, when wide sheets are being stenciled.

It will be understood that one stripping linger maybe used for one side edge of the sheet while the other side edge is engaged by the usual strippin tongue. 6 or 7;' the other stri pingiinger eing swung backto the dotte me position at Fig. 1. I

through the machine, said sheet being too roll, of a stripping finger arranged on the delivery .side of the cylinder and extending along the stencil cylinder and close thereto; said stripping finger swiveled on its outer end to permit it to he swung away from the stencil cylinder, and being longitudinally fluted presented to the thin with a stencil cylinder and a pressure roll, of a pair of stripping fingers mounted "on the delivery side of the cylinder and extendingtowards each other along the stencil cylinder and close thereto; each of said stripping fingers being swiveled on its outer end to permit it to be swung away from the semen stencil cylinder independently of the other stripping finger.

4. In a stenciling machine, the combina tion with a stencil cylinder and a roll to press 'the sheets against the cylinder, of a stripping tongue curving under the cylinder to engage the side edge of a sheetof paper, and a stripping finger mounted on the rear end of said tongue and extending along the stencil cylinder and close thereto.

5. In a stenciling machine, the combination with a stencil cylinder and a roll to press the sheets against the cylinder, tongues extending along the ends of said roll close to said cylinder to keep the side edges of the paper out of contact with the stencil, and stripping fingers swiveled upon the rear ends of said tongues to extend along the cylinder and close thereto and to swing rearwardly away from the cylinder. v

STEPHEN T. SMITH, JR. Witnesses: I JOHN 0. SEIFERT, K. FRANKEORT.

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