US1998357A - Web cutting and scoring device - Google Patents

Description

M. CARLSON April 16, 1935.

DKSCORING DEVICE WEB CUTTlNGqA'N Filed April 7, 1933 322 Z9 Z3 2 BY HIS ATTORNEYS UNITED STATES Patented Apr. 16, 1935 WEB CUTTING AND .soomnd nnvrcn' Martin'CarIson, Ghicagmm. Application April 7, 1933, Serial nogsccssa 2 Claims.

This invention relates to certain novel improvements in web cutting and scoring devices, and has for its principal object the provision of an improved construction of this character which will be. highly eflicient in use and economical in manufacture.

Another object of this invention is to provide a novel and improved device for cutting a moving web, such for example, as a web of paper or fabricated material, longitudinally into strips. 7 Still another object of the invention is to providea novel and improved device for forming score lines, fold lines, or lines of weakened union in amoving sheet or web, such for example, as a webof paper or fabricated material.

A further. object of the invention is to provide a device for cutting a moving Web of abrasive material, such, for example, as sandpaper, longitudinally into strips.

Another object of the invention is to providea device for forming score lines in a moving web of abrasive material, such, for example, as sandpaper.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of parts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing, showing the preferred form of construction and in which:

Fig. 1 is a perspective view of a preferred form of the invention; 7 V

Fig. 2 is a vertical sectional view of the same;

Fig. 3 is a View on line 33 in Fig. 2, partly in section and partly in rear elevation;

Fig. 4 is a sectional view on' line 44 in Fig. 2;

Fig. 5 is a sectional View on line 55 in Fig. 2;

Fig. 6 is a perspective view of one of the scoring knives embodied in the invention; and

Fig. 7 is a perspective view of one of the cutting knives embodied in the invention. I

The new device is indicated generally at 10 in the drawingand includes a support or frame H having spaced uprights [2. Having trunnions l3 journaled in the frame uprights 12 are guide rollers I4 between which a web I5 of abrasive sheet material such as; for example, sandpaper, emery cloth or the like, is driven by web-advancing rollers I6. The rollers l6 may be operated by any suitable means (not shown).

Spaced forwardly of the guide rollers l4 and also having trunnions I1, journaled in the frame uprights I2 is a roller I8; the roller l8 being spaced forwardly of the guide rollers M, in the frame i0, relative to the direction of travel 0f the web P5, Whiehis frbm'right to left in Figs. i and 2. a

' Better to guide the web I5' between the rollers f4, and to prevent lateral'shifting of the web i5, 9. pair of guiding flanges F9 are provided. These flanges I9 are L-shaped in crosssection and each has an arm extended aboveand spaced from a strip 20, The flanges l9 cooperate with the strips 20 to provide guide slots 2| (Figs. 2 and 3) for conducting the web i5 therethrough.

The strips 20 and flanges l9 are mounted on blocks '22 which are slidably mounted on the frame lofor adjustment relative to each other axially of the rollers M. This adjustment is effected by bolts 23 which carry the blocks 22 and are slidable in a slot 25 formed between spaced strips 25. These strips '25 are mounted on the frame Hi and extendaxially of the'rollers H. To clamp the blocks 22, strips 20, and flanges IS in an adjusted position andin spaced relationship relative to each other'wing nuts 26 are provided on the bolts '23. 1 1

Arranged at spaced intervals transversely across the frame "I between the uprights l2, and axially of the rollers "and i8, is a series of cutter knives 2! each. having a shank 28 and a cutting edge 29. These cutting knives 21 are adjustably mounted on a supporting bar 30 which extends between and has'its end portions mounted in the uprights I2. This supporting bar 30 is clamped in position by set screws 3| mounted in the uprights l2.

The cutter knives 21 are held in position and in spaced relation on the supporting bar 30 by means of clamping members 32 (Fig. 4). Each of these clamping members 32 has an aperture 33 formed therein for the passage of the bar 30 and each clamping member 32 has a' slot 34 formed therein through which the shank of a knife is extended. Each clamping member 32 includes a set screw 35 that bears on the corresponding knife shank.

The knives 21 are adjusted in the clamping members 32 so that their knife edges 29 bear upon the web l5 as the same passes over the roller l8 and thus sever the web l5 longitudinally into strips. 7

It is frequently desirable to score the strips cut from the abrasive web I5 so that the strips may be pulled longitudinally by a mechanic whereby the folded edge may be inserted into, and used to sandpaper, a place that is not'accessible to the flat face of the strip. To accomplish this end I may arrange at spaced intervals between the uprights |2 scoring knives 39 each having a shank 40 and a rotary scoring blade 4| carried thereby. The shanks 43 of these scoring knives 39 are mounted, as are the cutter knives 2'! in clamping members 32 so that the rotary blades 4| bear upon the web l5 above the roller l8.

To. prevent vibration and lateral shifting of the cutter knives 21 and of the scoring blades 4| during the cutting and scoring operations, I mount on the support I a supporting bar 36 that extends parallel to-the bar 30 above the roller l8. The end portions of the bar 36 are releasably mounted in slotted clamping blocks 3! that are attached to the inner sides of the uprights |2. On the bar 36 are arranged stabilizer members 3'5 each having a slot 38 formed in its lower side for the reception of the shank 28 of a cutter knife 21 or for the reception of theshank40 of a scoring knife 33. Each of these stabilizer members 31 includes a set screw 42 which bears upon and clamps the stabilizer to the supporting bar 36. These stabilizer members 32 cooperate with the supporting bar 36 to prevent lateral shifting of the cutting knives 21 and scoring knives 39 during the cutting andscoring operations, and thus function to keep the blades 29 of the cutter knives and the blades 4| of the scoring knives 39 in their tracks 44 and 43, respectively; thus assuring uniformity in the widths of the strips cut from the weband in the distancesbetween the score lines 43. i f

In the drawing both cutterknives 21 and scoring knives 39 are shownassembled togetheron the supporting bar 30. However, it is to be understood that the scoring knives 39 are not essential to the operation and function of the cutter knives 39 and vice versa. Hence, the device may be assembled with only cutter knives 21 on the supporting bar 30 should it be. desired to cut the web I into strips but not to score the same. Conversely, the device may beassembled with only scoring knives 39 on the supporting bar 30 should it be desired to form score lines 43 in the web I5 but notto cut the web into strips.

The device may be used for cutting or scoring a moving web of any kind of sheet material and is not limited in use to cutting or scoring abrasive materials. Thus the device may be used for cutting and scoring webs of paper, fabric, and the like.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification, without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

cutting knife having a shank, a fastening block having an opening for slidably receiving said supporting bar and an opening for slidably receiving said shank, said shank being arranged in contact with said bar, and a screw having threaded relation with said block and arranged in operative relation with the shankand the bar for pressing the two together, to clamp the shank and lock the block in position upon the bar.

2. In a web cutting and scoring device, a frame, a supporting bar carried by the frame, a cutting knife having a shank, a fastening block having an opening for slidably receiving said supporting bar and an opening for slidably receiving said shank, said shank being arranged in contact with said bar, and a screw having threaded relation with said block and arranged in operative relation with the shank and the bar for pressing the two together, to clamp the shank in position upon the bar, a second supporting bar fastened to said frame, and a stabilizing block adjustably mounted upon said second supporting bar and having a bifurcated extension arranged for connection with said shank.

MARTIN CARLSON.

Images