US1532834A - Stencil sheet - Google Patents

Description

April 7, 1925. 1,532,834

J. H. RAND STENCIL SHEET Filed Apfil 14, 1922 Wad /6AM Qty 720's n 62707716 5 tented Apr. i T225 srAtias re ains H. RAND, OF NORTH TblTAW'ANDA, NEW "Z'QRK.

srnnorr. snnn'r.

applieation filed April 14;, 1922. Serial lTfl, 552,792.

zen of the United States of America, and

resident of North Tonawanda, in the county of Niagara and State of New York, have invented new and useful Improvements in Stencil Sheets, ofwhich the following is a specification. I A

' This invention relates to stencil sheets of the type adapted to be prepared for use on a typewriter and then used for reproductio'n'purposes on a stenciling machine having means for applying ink through the stencil sheet upon cards or paper, etc.

In the accompanying drawings which illustrate the invention,-

Fig. 1 is a top view of a stencil sheet as supplied to the trade, a portion being broken away;

Fig. 2 is a perspective view of a sheet in the form in which it is applied to the typewriter;

Fig. 3 is a top view of the sheet in the form when ready to be applied to the 1 stencil machine, a portion being broken away.

The particular embodiment ofthe invention chosen for the purposes of illustration comprises the stencil sheet S and a backing comprising the end portions E and E, and the intermediate portion I. .The stencil sheet may be of any suitable construction adapted to permit the passage of ink through the portion struck by typewriter keys without permitting the passage of ink through the remaining portions. The backing is rplatively stiff but flexible. and, it should be adapted to absorb moisture to some extent. The backing preferably projects beyond the ends of the stencil sheet S and the projecting ends are provided with openings 0 adapted to hook over lugs on the stenciling machine to hold the sheet in position during the stenciling operation. he sheet-may be hooked on the stenciling machine at either or both ends, but it is preferably hooked at both ends as disclosed in my co-pending application Serial No. 552,793, filed on even date herewith.

The stencil sheet S is fastened to the backing along its end margins, the preferred method of attachment being to cement the margins as indicated at M in the figures. The, backing is weakened along lines L inside the cemented margins so that the ends E and E may be separated from i the intermediate portion 1.

The preferred method of using the stencil sheet is as follows: Before the sheet is in serted in the typewriter, one end E or E is separated from the intermediate portion I along the line L and the sheet S is swung away from the intermediate portion T as shown in Fig. 2, so that the portion I may be moistened. After the backing has been moistened the stencil sheet is swung back into contact therewith and is then applied to the typewriter. The end of the stencil, which is not separated along the line L (the lefthand end in Fig. 2), is preferably inserted foremost in the typewriter, inasmuch as the sheet will feed through the typewriter better in this direction. After the typing operation, the intermediate portion T of the backing is separated from the other end E along the other line L and is discarded. This leaves the stencil in the form shown in Fig. 3. The sheet is then ready to use in the stenciling machine, and by virtue of the relatively heavy strips E and E at each end, it may be attached to the stencilin machine at either end. However, it is pre erably attached at both ends, as aboye stated,'

and the attaching means preferably applies a yielding tension to the sheet, so as to hold it flat in the stenciling operation.

I claim: v

1. A stencil comprising a stencil sheet and a relatively heavy strip attached to each of two opposite margins for attaching the stencil to a holder, said strips being constructed to interengage with the holder.

2. A stencil comprising an imperforate stencil sheet, a relatively heavy strip permanently attached to each of two opposite margins, and an intermediate strip detachably connecting said strips.

3. A stencil comprising a stencil sheet and a relatively heavy strip attached to each of two opposite margins and extending beyond the margins for attaching the stencil to a holder, said strips being perforated to interengage with the holder.

4. A stencil comprising an imperforate I stencil sheet and a backing therefor, said sheet being attached to the backing at o posite ends but being free from the backing intermediate the ends.

v5. A stencil comprising a stencil sheet and a backing therefor, the backing extendmargins of said sheet and the sheet Being cemented to the backing along said margins,

6. A stencil comprising a stencil sheet and a backing therefor extendin beyond opposite margins of the sheet, said sheet being attached to the backiing;- along said margins and the backing being weakened at lines extending along the inner sides of said margins respectiveiy so that the central portion of the hacking may be removed by separating the backing along said lines Without detaching said sheet fi'om the remaining ends of the backing.

7. A stencil comprising a stencil sheet and a backing therefor, said sheet being at tached to the backing at opposite ends but being free from the backing intermediate the ends, the hacking being cc-nstructed to connect with a holder at each ct said ends.

8. stencil comprising stencil sheet ing beyond cpnosiite t0 the backing along said opposi insaesc and a backing thei'ei g, said sheet being attached to backing along o gpesite man gins and the backing being weakened at lines extending aiong the inner si s of said margins respectively so that the a M :11 por tion of the backing may be :"eniove by separating the backing along said lines Without detaching said sheet from; the remaining ends of the backing.

9. A stencil comprisnnr a stencii sheet and a backing projecting. beyond opposite ends of said sheet, the sheet being attached ends and the backing being weakened along the inner edges of said attached ends, said projecting ends having openings therein adapted to interengage With a stencil holder.

Signed by me at Boston, Mass, this 20th day of March, 13122.

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