US1001912A - Machine for cutting paper. - Google Patents

Description

G. W. WATSON.

MACHINE FOR GUTTING PAPER. I APPLICATION FILED DEG. 23, 1969. 1,001,912. I Patented'Aug. 29, 1911.

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7111) e rzrZo T was \Jn I'BLUUJJl MACHINE FOR'GUTTING PAPER.

APPLICATION FILED DBO. 23, 1909. I 1,001,912. Patented Aug. 29, 1911.

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UNITED STATES PATENT [GEORGE W..WATSON, or NASHUA, New HAMPSHIRE, ASSIGNOB- TQOINASHIIIA CARD GUMMED & COATEDPAPER COMPANY, or insulin, NEW HAMPSHIRE, A CORPORA TION or MAssAcHUsErT:

- M CHINE FOR CUTTING PAP-ER.

Application filed December 23, 1909. Serial No. 534,725.

chines for Cutting Paper, of which the fol lowing is' a specification. I

TlllS invention relates to machines for severing a web or strip of paper into cut sheets of uniform area, and has especial reference to machines of this type which employ cooperating cutting devices one of which is. stationary and the other comprises a single cutter'which rotates and cuts a sheet from theweb at each rotation, the web or strip being advanced ata uniform rate of speed.

Certain treatments of paper, such as the application of parafiin thereto, frequently result inal'runeq'ual stretching ofthe material so that, if the web or strip has been provided with printed n'iatteigor bears any kind of symbols at. regular intervals, the lines of out are not always equi-distant between the imprcssionsfmade on'the paper. When suchout sheets are intended to form wrap jing sheets for articles, which Wrapping sheets'are applied, by machinery to the articles inclosed thereby, itis of course desirable that any printed matter or equivalent thereof borne by the sheets shall have a certain definite location or locations rela tively to the cut edges of the sheets, since otherwise the packages would not properly display the printed matter. fllhe object ofthis invention is to provide a webcutting machine with means whereby the el.

the size of the sheets as they are cut from the web may be controlled so that the cuts will be uniformly spaced relatively "to the printed matter vor other symbols borne by the web or strip. This. object is attained by varying the speed of movement of the cutter relatively to that of the web being cut during the operation of the machine, so

that the operator canrender it certain that the cuts nzay be made according to certain indications borne by thmweb, such indicaticmsusually consisting of slight marks nearms of the web, wh ch marks are i .1 applied to the web whenit is printed.

To these ends the invention consists in the construction and combination ofparts substantially as claimed.

Figure 1 is a side elevation, partly in section, of a n1achine containing an embodi ment'of my lnventlon. F 1g. 2 reprosents a section through the speed-changing mechanism which, in this embodiment'of the invention, comprises essentially an expansion hereinafter described and OFFICE. T

Specification of Letters Patent. Patented'Aug. 1911. I

pulley. Fig; 3 isv a side elevation of the same, partly broken out. Fig.

4 represents a detail section on line 4.4 of

Fig. 2.

Similar reference characters indicate the a same or sumlar parts in all of the views.

The frame of the-machine is provided with suitable bearings for the main shaft 11 on which is wcured; a driving pulley 12 adapted to be actuated .by a belt 13 from any suitable source of ower, not shown.

()n the shaft 11 is secure a pinion 14 which shaft lti,

meshes with agear 15 secured on a said shaft having keyed thereon a drum 17'.

Suitably mounted above the drum is a pressure roll 18 between which and said. drum the web. of paper a is assed from a suitable reel19. The web, aiter passing between the drum 1? and roll 18, passes overatable 20 and .over the edge of a fixed knife 21 at the lower edge of said table, the. paper then passing to a delivery belt 22 which passes I around rolls 23 and 24. The delivery belt is driven by means of a crossed belt-25con= necting a pulleyon' the "shaft of the upper A pressure'roll 26 bearing'upon the roll with a pulley on the. main shaft 11..

upper in contact with said belt so that each sheet;

it severed, willbe carried downward and forward and delivered by the belt 22 onto a suitable receiving table 27. Mounted in bearings carried by the frame of the machine is a shaft 28 havinga drum during each rotation of the. shaft 28, .it will engage the paper whichisbeing'fed over the tableQO. and fixed knife21 so as to severthe p 29 to which is secured the cutter or knife 30, i 1

said cutter 30 being so positioned that once belt 22 and roll 26. and delivered onto the table 27.

The knife or cutter is actuated by the foli said beltbeing held 'at proper tension by a 40 (see Figs. 2, 3 and 4). Said segments are lowing mechanism :-Secured on the shaft 28 is a gear 31 which meshes with an idle gear 32, said gear 32 meshing with a gear 33 fixed on the shaft 34 of the speed changer which I will presently describe. A pulley 35 fixed on the mainshaft 11 is connected by means of a belt 36 with the speed changer,

tighteuer' roll 37.

In this embodiment of the invention, the

speed changer comprises an expansion pu1-. ley which consists of a plurality of segments radially movable between side webs 41 which are connected by a hub fixed on shaft i the ribs 45 engaging the radial ways 44, the segments are guided properly inward and outward. Pivotally connected at 49 to the inner ends of the stems 46, are links 50 which extend outward through the slots 43 in the side webs 41, and are pivoted at 51 to hubs 52 which are splined on the shaft 34, said hubs having annular grooves 53. ,.To actuate these hubs toward and from each other sothat .the links 50 will act as toggles to adjust the segments 40 outward or lnward, I provide levers 54 which are pivoted'at 55 to any suitable fixed supports, said levers having pins or rolls 56 entering the annular grooves '53 of said hubs. The lower or free ends of the levers 57 have pivoted thereto a pair of links 58, the two links 58 being pivotally connected with an arm 59 (see Fig. 1) of an elbow lever, the other arm 60 of said elbow lever having a spring 61 connected to it to normally hold the parts with the lovers 54 spread A link 62 is connected to said arm 6Q and to an arm 63 of a foot-tre'adle 64. The belt 36 passes over; the expansion pulley described, and when the foot-treadle is actuated so as to vary the diameter of the said pulley, the tightener 37 holds the belt at proper tension.

When the machine is in use, the operator by keeping one 4001; upon the treadle 64 and watching the relationship of the lines of severance of the paper to the usual marginal indications borne by the web at certain points between the rinted matter thereon, can instantly vary t e speed of rotation of the cutter 30 so that it will sever the paper at exactly the point which bears the in'dications made for that purpose. This instant variation of speed of rotation of the cutter occurs during" or simultaneously with the act or movement of the attendant who operates the treadle 64, and therefore if the pa-- per is not coming through the machine so that the markings register with the point of operation of the cutter, the attendant can immediately rectify the operation.

the control of the attendant, and such variations as need to be effected occur practically instantaneously with the act of shiftingthe treadle,.and without waiting for the machine itself to complete the operation of changing the speed, as is necessary when cone pulleys and a belt shifter are employed. I I c It will now be understood that the ma chine is entirely under the control of the operator to cause the cutting to occur at distances to accord with the spacing of the printed matter borne by the web or strip.- And owing to the fact that but a single knife is employed, by varying the speed of operation of that knife relatively to the speed of the web or strip-forwarding devices, the operator can exercise'a perfectcontrol over the size of the cut sheets.

Having thus described the nature of my; said invention and illustrated a way of. making and using the same, although without attempting to set forth all of the forms in which it may be made or all of the modes of its use, what I claim is:

1. A machlne for cuttlngsheets from a web, comprising web-feeding mechanism, a

continuously operating cutter, and manually controlled means for instantly varying I the speed of action of the cutter in unison with the controlling act of the attendant,

said speed cont-rolling means being operable y from a position to enable the attendant to watch the sheets being cut, whereby the cut- I tings may be made according to markings upon the material being cut. l

'2. A machine for cutting sheets from a web, comprising means for contin'tuously feeding a web at a substantially uniform i speed, a single rotary cutter, and mahually controlled means for instantly varying the speed of action of the cutter in unison with the controlling act of the attendant, said speed controlling means being operable from a position to enable the attendant to watch the sheets being cut, whereby the cuttings may be made according to markings upon the material being cut.

3. A machine for cutting sheets from a web, including in its construction a fixed cutter, means for continuously feeding a web acrops said fixed cutter, a single rotary. cutter to co-act with said fixed cutter, and manually controlled means for instantl varying the speed of action of the cutteifi' unison with the controlling act-of the attendant, saidspeed controlllng means being operable from position to enable the attendant to watch the sheets being cut,

As a matter of fact, by keeping-the foot upon the treadle 64, variations are constantly, under iei'ehy the cuttings may be made accord g to markings upon the material being t. -11. A machine for cutting sheets from a all, lllUlUCllll" in its constructlon a fixed tter, means for continuously feeding a :l.) across said fixed cutter, a single rotary tter to (lU-tlC-h w th saul fixed cutter, and mine for lnstnntly varying the speed of niement of said rotary cutter said means eluding an expansion pulley, gearing beeen sanl expansion pulley and rotary cutr, and means for varying the SIZB'Of. sald pulley during operation thereof, said speedcontrolling means being operable from a. po- 15 sition to enable the attendant to watch the sheets being cut, whereby thecuttin gs may he made according to markings upon the material. being cut,

t In testnnony whereof I hate aflixed niy 20 signature, in presence oftwo witnesses! GEORGE W. wrsoN.

Witnesses:

J. B. Tmwrson, C. M. Cross.

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