US886260A - Stenciling-machine. - Google Patents

Description

No. 886,260. PATENTED APR. 28, 1908.

"1.J.sM1TH; STENGILING MAUHINB.

APPLICATION FILED F313. 5, 190B.

. A Wifnessea: 7 ln Z fO/F 15 a pressure roll.

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ALEXANDER J. SMITH, OF STAMFORD, CONNECTICUT, ASSIGNOR TO UNDERWOOD-TYPE- WRI rER COMPANY, or NEW YORK, N.

Y., CORPORATION OF NEW JERSEY.-

STENCILING-rI/TACHINE i Specification of LettersPat ent.

Patented April as, 1908.

Applicatidn filed February 190a. sash No. areas.

a citizen of the United States, residing in Stamford, in the county of Fair-field and State of Connecticut, have invented certain new and useful Improvements in Stenciling- Machines, of which the following is a specification. I

This invention relates to stenciling inachines for use with typewritten stencils, and more particularl to the means for delivering the sheets from the machine.

The stencil is usually wrapped around an inking cylinder, and the sheets to be stenciled, upon are passed between said cylinder and The machine is usually equipped with stripping tongues placed at'the ends of the stencil cylinder, to lie between the stencil and the; sheets to be stenciled upon, so as to separhte or strip the latter gently from the stencil sheet, as the cylinder revolves. The stripping is rendered necessary because of the adhesive character of the ink 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 portion of the machine, so that their side edges are not caught by either of the stripping tongues.

The object of nzy'invention is to provide simple, inexpensive and effective means for stripping narrow sheets from a stencihcylin- 'der, without however rendering the machine less valuable for use with wide sheets.

At the, delivery side of the cylinder, '1 mount a rod which extends along the cylinder, and upon said rod 1 provide a pair of fingers or tongues which extend towards the pressure roll and close to the stencil cylinder, to catch over the leading edges of thenarrow sheets as they pass through the machine, and gently strip theinfrom the stencilcylinder. These auxiliary strippers are adjustableindependently of each other along the stencil cylinder to accommodate any desired width of sheets. The rod is preferably mounted upon the rear ends of the stripping tongues heretofore referred to, so that the improvement me be applied to the stenciiing machine at aminimuni of expense. desired to pass wide sheets throughthe rnachine, the auxiliary strippers are turned on said rod to a position where they will be out of use and away from the cylinder.

WVhen it is use of one stripper 8 in connection with one. of

the accompanying drawings, Figure lis oiling machine of the kind disclosed in United States Patent No. 832,217 of October 2, 19%, showing the novel stripping finger in full lines iii working position, and in dotted lines in a position of disuse. Fig. 2 is s cross to illustrate the manner ofadjustahly and rev olubly, mounting the stripp ng finger or blade. 3 is a detail of a part-seen at 2. Fig. 4 isggplan of the stripping devices. 1

The stenciling machineusually comprises a stencil cylinder 1, a pressure roll 2, a feed board 3 and a directrix plate 4 curving around the under side of the cylinder at theintroductory side thereof. A narrow sheet. 5 to be stenciled uponis'shown as passing through the machine,'said sheet being too narrow to usually placed at the en s of thecylinderfi, as set forth in said patent.

The side borders of he narrow sheet 5 are engaged by a air of stripping plates or fingers Smounte' upon a rod 9 extending along the cylinder 1 and fixed at its ends to the rear ends of the stripping tonguesfi, 7. Said stripping fingers 8 extend from said rod towards the cylinder 1, and their tips lie close to the surface of said cylinder, Fig. 1, in position to insinuate themselves between the to strip the letter from the cylinder.- These strippers 8 preferably reach nearly to the pressure roll 2 and preferably extend about tangentially of the cylinder 1, each having a thinned or beveled tip as seen at 10 for the purpose stated.

The fingers 8 may be adjusted independently of each other along the cylinder 1, so that they may accommodate the position of the sheet 5, and always engage the side boninked impressions thereon The position of the sheet 5 is determined by means of the usual adjustable side gage 1 1.

through the machine at anydesire adjustment longitudinally of the cylinder 1., and that their side edges may be stripped by means of the joint action of the strippers 8 or by the the stripping tongues 6 or 7 the other stripper 8 being swung to the position of disuse seen in dotted lines at Fig. 1. When full ,a sectional diagrammatic elevation of a stein-- be engaged by the stu ping tongues 6, 7

cylinder and the leading edge of the sheet5,

ders of the sheet, so as not to smudge the ice" It will be seen-that the sheets ma 7 be run width sheets are being run through the ma- I clinal chine, both strippers 8 may be swung back as indicated.

Each of the stripers 8 is secured atits outer end to a yo "e 12 having cylindrical eyes 13 to fit revolubly upon the rod 9. A key in the form of a short cylindrical roller 14 is pressed by a spring-bow 15 into a groove 16 formed longitudinally in. the rod 9 in such position that the spring 15 and key 14. hold the finger 8 in. working position, Fig. 1. By turning the finger 8 downwardly, the roll 14 is forced out of the groove and the finger may be swung around until it points backwardly; the friction being sufficient position of disuse. 17 in the yoke.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

to hold the finger in this The key 14 Works in slots Having thus described my invention, Iv

claim:

1. In a stenciling machine, the combination with a stencil cylinder and a pressure roll, of a fixed rod extending along the delivery side of the cylinder, and a stripping finger splined upon said rod for adjustment thcrcalong; said rod having a longitudinal groove and said fin er having a key to engage said groove to hold the linger in working position, said. key yielding to enable the finger to be turned upon the rod to a position of disuse.

In a stenciling machine, the combination with a stencil cylinder and a pressure roll, of a fixed rod extending along the delivery side of the cylinder and having a longitudinal groove, and a pair of stripping fingers, and means to engage the groove and adjustable independently of each other along the rod; said fingers being revoluble upon said rod. to enable them to be turned to a position of dishse.

3. In a stenciling machine, the combination with a stencil cylinder and a pressure roll, of a fixed rod extending along the delivery side of the cylinder and having a longituproduced by the spring,

groove, and a pair of stripping fingers, and means to engage the groove and adjustable independently of each other along the rod; said fingers being revoluble upon said rod to enable them to be turned to a position of disuse, each of said fingers having a s rin pressed key to engage said groove yielc ing y and permit rotation of the finger upon the rod.

4. In a stenciling machine, the combination with a stencil cylinder and a roll to press the sheets against the cylinder, of astripping tongue to engage the side edge of a sheet of pa er, a rod mounted transversely of the cylin er on the delivery side thereof, and. a stripping finger adjustable along said rod, the latter being mounted upon the end. of said stripping finger. v

5. In a machine the combination with a stencil cylinder and a roll to press the sheets a ainst the cylinder, of tongues extending a ong the ends of said roll close to said cylinder, to keep the side ed es of the paper out of contact with the stenci and a .stri )ping fin.- ger upon the delivery side of the cy inder and adjustable along the same said finger mounted upon a rod which is secured at its ends to said tongues. Y

6. In astenciling machine, the combination with a stencil cylinder and a roll to press the sheets a ainst the cylinder, of a pair of tongues at t e ends of the cylinder to keep the side edges of the sheets away from the cylinder, and a pair of stripping fingers mounted u on the delivery side of the cylinder and ad ustable therealong independently of each other and of said tongues, each of said fingers movable to a position of disuse independently of the other thereof, to enable the ,fingers to cooperate with each other independently of t e tongues, or either finger to cooperate with either tongue, or the tongues to cooperate with each other when the fingers are moved out of effective osition's.

ALEXAND R J. SMITH. WVitnesses:

K. Fn'AN roRT, JOHN O. SEIFERT.

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