US1436105A - Strip serving and cutting machine - Google Patents

Description

W. D. KIMBALL AND A. E. RIDEOUT.

STRIP SERVING AND CUTTING MACHINE.

APPLICATION FILED JAN. 30. ms. RENEWED SEPT.20. 1922.

1,436,, 1 Q5 Patented Nov 211, 1922.

patented Nov. 21, 1922.

' STATES means PATEIWF WALLACE D. KIIVIBALL, OF NEW YORK, N. Y., AND ARTHUR E. NInEo 'r, or onrcneo, ILLINOIS, ASSIGNOBS, BY MEsNE ASSIGNMENTS, T0 NASI-IUA GUIVIMED & COATED PAPER COMPANY, OF NASHUA, NEW HAMPSHIRE.

STRIP SERVING AND CUTTING MACHINE.

Application filed. January30, 1918, Serial No. 214,560. Renewed September 20, 1922. Serial No. 589,484.

To all whom it may concern.

Be it-known that we, l VALLAOE D. KIM- BALL and ARTHUR E. RInEonT, both citizens of the United States, and residents, respectively, of the city,vcounty, and State of New York, and Chicago, county of Cook, and State of Illinois, have invented new and useful Improvements in Strip Serving and Cutting Machines, of which the following is a specification.

This invention relates to apparatus for cutting and feedinggum sealing strips of I the character shown in the copending application of A. E. Rideout, Serial No. 220,863 filed March 6,1918. The sealing strip there described consists of a definite length of gummed paper tape having one edge slit at intervals to a depth of about one-halfthe width of the strip. The object of the present invention is to providea ma chine, more, particularly an attachment for an ordinary strip serving machine, which will cut the spaced slits in one edge of the Y tape as it is fed and delivered by the serv-- ing machine. I

In the accompanying drawings we have illustrated the invention as applied to a well known machine which automatically, at predetermined intervals without attention by the operator, moistens, cuts off and delivers a fixed length of tape, such as the machine, for example, in, Patent No. 1,271,603, granted to Charles G. f/lortimer, July 9, 1918. The slitting attachment which is combined with this machine operates in the moment of dwell betweenthe successive advances of the tape to simultaneously produce the spaced slits in one edge of the tape throughout the entire length served at one operation of the serving machine.

Thistype of-machine is shown in the accompanyingdrawings, and hereinafter described, and in the said drawings Fig. 1 is a side elevation of the complete machine;

Fig. 2 is a detail of the slitting knife;

Fig. 3 shows a portion of the paper strip prepared by the machine; and

Fig. 4; is a detail view of a modification.

Referring-to the drawings, 1 indicates the strip serving machine as a whole, here shown in outline as a casing enclosing the moistening tank and supporting the feed rolls and cutting mechanism. The gearing for operating the machine is mounted in the bracket 2 attached to one side of the machine, the gearing being driven by a belt from a suitable electricv motor 3. The gearing comprlses one large master gear 4 from which the slitting attachment is arranged to be operated. The slitting attachment comprises a frame consisting of spaced side bars 5 extending horizontally from the rear wall of the serving machine to the paper roll support 6 which is mounted on the support ing table at a suflicient distance from the serving machine to provide a stretch of exposed strip at least equal in length to the piece to be cut off by the serving machine.

Between the roll support and the serving machine the side bars 5 are connected at intervals by cross bars 7'. each of-which is made up of two pieces. The upper piece is provided on its underside which immediately overlies the lower piece, with a shallow recess 8 somewhat greater than the width of the tape, and attached to the lower edge of the bar, across the top of the re-- cess, is a stationary shear blade 9. The lower piece of the cross bar has its upper surface plane and lies immediately under the upper piece enclosing the bottom of the recess 8 thereby forming a narrow guide slot through. which the tape is threaded when the machine is connected up for use.

Pivot-ed on each cross bar 7 at one end is a vertically swinging shear blade 10 arranged to. cooperate with the stationary blade to cut the tape lying in the recess of the cross bar. Each. shear blade is operated from a horizontal shaft 11 supported in hangers 12 depending from the side bar 5 adjacent the pivots of the shear blades. The i shaft 11 is continuously rotated from the serving machine through suitable beveled gears 13 timed'to efi'ect one complete rotation of the shaft 11 for each operation of the shear blade 10 at a point near its pivot whereby the shear blade will be partially closed to cut the tape without excessive movement of the plunger. In order that the shears will cut only half way across the tape the length of the plungers and the stroke of the eccentrics are proportioned to butpartially close the shears on each operation, that is when the eccentric is in its uppermost position the. swinging shear blade will be closed to the position indicated in'th'elight,

broken lines in Fig. 2.

The gears 13 will be so timed that the shaft 11 comes to rest with the blades open to position shown in heavy, broken lines in Fig. 2, and it will be noted that the cutting edge of the blade drops to a position con siderably .below the edge of the stationary blade before moving up to cut the-tape whereby the eccentricwill rotate through about three-quarters of a reVolu-tionbefore the blades come in contact. This period is sufficient for the desiredilength of tape to be fed by the serving machine. I

The machineyis designed to allow forthe adjustment of the shears alongthe side bars 5 so as to vary the distancebetween the cuts;

To thisend the collarsl'? to which the eccentrics are connectedareattached to'the shaft 11 by means of set screws 21 and the bars 7 are supported from the side angles 5 by clamping screws22 working in slots (not shown) in the webs of the angles.

The'serving machine of the above mentioned application is designed to feed tapes of different lengths and-in order to adapt the slidingattachment for diiferent lengths of tape, the eccentrics 14am not fixed to the shaft llbut are detachably connected there to by means of locking. dogs 16 supported on the eccentrics and each adapted to engage a recess 18 inaa collar 17 'fiXBdtO-thB shaft adjacent each eccentric. By this arrangement anynumber of the knives adjacent the roll support may be rendered inoperative, leaving in action only the necessary number =of knivesadjacent theserving machine to slit the desiredlength' of tape. v

The serving machines are also adapted to operate :on tapes of different width.=- -As the tape is usually slitto its middle point the sl ittingxattachment will operate on different widths of tape by arranging the shears to close only to-the middle point, asshown Fig. 2, and providing adjustable edgeguides' One important advantage of the presentmachine is the-arrangement of the shears so asnot to cut through thexpaper. The slit in the edge of the tape might be produced operating said shears.

by a short shear blade extending only the middle of the tape. It has been found, however, that with "this arrangement the end of the shear blade in passing through the tape produces .a burr or raised-edge at the end of the cut whichhis apt to catch on the tape guides and cause the tapeto tear as it; is advanced by the feed rolls of the serving machine. Byhaving the shear blade longer than the cut a short cut is produced which :Jhas no upstandinged'ges' to obstruct the' feed movement. It is obvious, of course, that the details of themachinemay be variousl modified, for instance, cams may be used'm placeofzth'e eccentrics to effect the operation of {the shears. without departing from the spirit of themvention'or the scope of the appended claims. We claim:

1. In a machine of the class described, the

combination of means to advance, moisten and cut off a predetermined length of gumined paperfroni'a roll, a support for said rolland means operating upon-the'tape before it reachessaid advancing and mois- Otherchanges may also be made j tening means for making a plurality of cuts 5 off. a

2. In a machine of the 'class described,

the combination of meansfor moistening, advancing and cutting ofl" a predeterimlned length of gummed tape-from a roll thereof, a support-for saidroll andmeansyarranged between said roll support and said moisten ing, advancing andc-utting means for cut ting a plurality of slits in one edge of'the length of tape between theroll and said other means. of 1 3. In a machine of the class described,the combination of intermittently operated means'to advanc-e,-moistenandcut off a pre determined length o'f gummed tape from a roll, a support for said roll and means operatingupon the tape'before it reaches said, advancing and moistening means for making a plurality of cuts at spaced intervals in the I length to be cutoff, said last-namedmeans being operated during the period of'dwell between operations of said first-mentioned means. a 4. In a machine of the class described," the combination of means to periodicallyad- Vance a strip and cut oflfa length therefrom and means operating in the intervals of dwell between said periodical advances for simultaneously making a plurality of trans verse cuts at spaced intervals in one edge of said strip, said means comprising a'plurality of shears supportedin spaced relation,means for guiding the strip between at spaced intervals in the length'to'be cut said shears and means for simultaneously 5. In a machine of the class described,the

combination with means to advance a strip of sheet material of an edge cutter comprising a pair ot shear blades arranged for their edges to close progressively transversely of the strip, means for guiding the strip between said edges and means for operating said shears to close them only part way across the width of the strip before their next opening movement.

6. In a machine for advancing a strip of sheet material means for producing a series of spaced cuts in one edge of the strip to be advanced comprising a plurality of pairs of shear blades having their edges arranged to close transversely of the strip and means for optionally rendering inoperative any desired number of pairs of said blades.

7. In a machine for advancing a strip of sheet material means for producing a series of spaced cuts in one edge of the strip to be advanced comprising a plurality of pairs of shear blades having their edges arranged to close transversely of the strip, and means for operating said shears to close them to a predetermined point only, said pairs of blades being adjustable longitudinally of the strip whereby the distance between cuts may be regulated as desired.

8. In a machine for advancing a strip of sheet material, an edge cutter comprising a pair of shear blades having their edges arranged to close transversely of the strip to be advanced, means for guiding the strip between said edges, means for operating said shears to close them part way only across the width of the strip, and means to vary the degree of closing of said shears.

9. In a machine for advancing a strip of sheet material, an edge cutter comprising a pair of shear blades having their edges arranged to close transversely of the strip to be advanced, means for operating said shears to close them to a predetermined point only and a guide having adjustable guiding walls whereby strips of different widths may be guided between said shear edges to be slitted transversely the same proportional extent of their width.

Signed at New York in the county of New York and State of New York, this 5th day of Dec, 1917.

WALLACE D. KIMBALL.

ARTHUR E. RIDEOUT.

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