US1768070A - Cutting and perforating machine - Google Patents

Description

June 24, 1930,

R. M C. JOHNSTONE CUTTING AND PERFORATING MACHINE Filed Jan. 5, 1928 3 Sheets-Shea; 1

' 11v ENTOR vflc/ M A TTORNEY June 24, 1930- R. we. JOHNSTQNE I CUTTING AND PERFORATING MACHINE Filed Jan. 5, 1928 3 Sheets-Sheet 2 INVE 0R )Wc M W ATTORNEY June 24, 1930. Mcc JQHNSTQNE 1,768,070

CUTTING AND PERFORATING MACHINE & Filed Jan. 5, 1928 3 Sheets-Sheet 5 INVENTOR .211 m W/C QMQ A TTORNE Y Patented June 24, 1930 UNITED STATES PATENT OFFICE ROBERT MCC- JOENS'IONE, OF ROSELLE PARK, NEW JERSEY, ASSIGNOR TO CAMERON v MACHINE COMPANY, OF BROOKLYN, NEW YORK, A CORPQRATION OF NEW YORK CUTTING AND PERFORATING MACHINE Application filed January 5, 1928 Serial No. 244,638.

This invention relates to a cutting or perforating machine, that is, a machine for severing a web of flexible material transversely either partially or wholly, and to a combined machine for both slitting and severing a web.

The invention relates more articularly to the type of machine in which t e flexible material is wound after being acted upon. In machines of this type it is a well-known fact that the slitting operation may affect adversely the winding operation and vice versa,

but it is not generally recognized that a transverse severing operation, such as perforating, may likewise afl'ect adversely both the slitting and winding operations. The main ob-' j ect and feature of this invention is to properly coordinate the transverse severin means with slitting and winding means alt 'ough I wish it to be distinctly understood that the invention is not limited to the inclusion of slitting or/and winding means.

In the accompanying drawings the inven-' tion is disclosed in a concrete and preferred form in which:

Fig. 1 is a transverse sectional view through a combined slitting and erforating machine embodying one form 0 the invention;

Fig. 2 is a top plan view, partly in section, of the upper portion of Fig. l;

Fig. 3 is a vertical sectional view substantially on the plane of line 3-3 of Fig. 2;

Fig. 4 is a detaiLsectional view showmg the perforating couple;

Fig. 5 is a more or less dia ammatic view showing the adjustable gearing;

Fig. 6 is a detail sectional view substantially on the plane of irregular line 6-6 of Fig. 3;

Fig. 7 is a somewhat diagrammatic view showing the adjustability of the perforating blade;

Fig. 8 is a detail view looking in the direction of arrow 8 of Fig. 7;

Fig. 9 is a perspective detail view of a spacing member that may be used in connection with the invention.

1 and 2 indicate two surface winding drums with which is associated a winding shaft 3. 4 and 5 denote two rotary members to sever, in this case partially, a web 6 of flexible material transversely. 7 is a scorecut slitting means which acts against a suitable backing roll, here front winding drum 1, andthis latter is provided with a glasshard surface to resist the tendency of the score-cutters to mark or groove the backing roll. In this case web 6 is led over suitable guides to the front winding drum where the slitting action takes place, then between rotary members 4 and 5 where the perforating takes place and then back to the front wind ing drum and to the winding shaft. It will be understood that the slitted sections of flexible material should be disturbed as little as possible in order not to interfere with the winding operation and also that distortion of the slitted section should be .avoided in order not to interfere with the slitting operation. With this object in view the surface a speed of the rotary members is made the same Rotary member 5 is provided with a yielding surface 8 and rotary member 4 carries one or more projecting severing members such as perforatin blade 9. This perforating blade prefera ly extends non radially and has a trailing action during its cutting action. This blade does not cut into the yielding surface but simply depresses the latter at the point where it engages it and in order not to have the blade act against the same point all the time the circumference of member 5 issomewhat larger than the distance between successive lines of severance or multiples thereof. Blade 9 rests on a shelf 10 of member 4 and is provided with elongated slots-11 through which pass bolts 12 and it will be understood that by these means the cutting radius of said member 4 ma be increased or decreased and thereby the distance between successive lines of severance said blade to project further outwardly. To

compensate for such adjustments, provision is likewise made whereby the center. distance between 4 and 5 can be varied and this is 20 16 that in turn meshes with gear 17 of mempreferably efiected by mounting member 4 in an ad'ustable bearing 14 slidably carried by the ramework. Suitable driving connections areemployed whereby the surface speed of member 4, that is of the cutting edge of blade 9, may be maintained equal to that of member 5, or of the depression caused in its surface by blade 9, and equal to that of backing roll 1. In the present instance this is accomplished as follows: Drum 1 is provided with a gear 15 which engages a pinion.

ber 5, and said member 5 obviously need not be of the same diameter as drum 1 but can be provided with the same surface speed as said drum by employin a proper gear ratio between the two. eshing with gear 17 is a pinion 18 and pivotally mounted on a center in line with the center of rotation of pinion 18 is an arm 19 carrying a pinion 20 that transmits motion from 18 to gear 21 on member 4. Arm 19 can be secured in any position to which it has been adjusted by bolt 22 and segmental slot 23. It will now be under-' stood that, when blade 9 is adjusted to vary the cutting radius of member 4, the same surface speed can be maintained by substituting other gears in place of 20 and 21 and that arm '19 can be adjusted to admit of this.

Drum 1 can be driven in any suitable way, as by means of pinion 24 meshing with gear 25 on the drum, and it will be under-v stood that drum 2 can be driven from 1 by means of pinion 26 and gear 27.

I claim:

1. Transverse severing means for webs of flexible material including: two rotary members, a cutting member adjustably mounted on one of said rotary members to increase or decrease the cutting radius thereof to thereby vary. the distance between successive lines of severance, and driving connections to impart equal surface speed to'the two rotary members notwithstanding changes in the cutting radius of one of said members, said connections including a power transmitting member adapted to be readily displaced to permit introduction of a different size power transmitting member in said driving connections. 7

2. Transverse severing'nieans forwebs of flexible material including two rotary memreadily displaced to' permit intro uction of a different size power transmitting member in said driving connections.

Signed at the borough of Brookl n, in the county of Kings, city and State of ew York, this 22 day of December 1927.

ROBERT Mod. JOHNSTONE.

bers one provided with' a yielding surface and the other with a projecting cutting member, said projecting cutting member adjustably mounted on said other rotary

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