US1947355A - Cutting device - Google Patents

Description

Feb. 13, 1934. J O'NEILL 1,947,355

CUTTING DEVICE Filed Sept. 28, 1931 .Fdnrard J Orzeill Patented Feb. 13, 1934 CUTTING DEVICE Edward J. ONeill, Syracuse, N. Y.

- Application September 28, 1931 Serial No. 565,609

4 Claims.

This invention relates to a cutting device particularly adapted for use in cutting pads used in the manufacture of sanitary napkins.

Among the objects of the invention are to iprovide pads for use in the manufacture of sanitary napkins having a minimum of bulk and affording a maximum of comfort when worn; to provide means for cutting such pads from -'a strip of material; to insure. uniformity in the pads cut from a strip of material; to prevei1 t possibility of the material cut or being cut sticking to the knife; and to provide a cutting device of simple and inexpensive construction which is thoroughly efficient in general for the purpose intended.

Other objects and advantages of the invention will be apparent from the following description, considered in connection with the accompanying drawing, in which:

Figure 1 is an elevation of a cutting device in accordance with this invention mounted on a frame shown in section.

Figure 2 is a vertical section taken on the line 2-2 of Figure 1.

Figure 3 is a horizontal section taken on line 3-3 of Figure 1.

c Figure 4 is a view similar to Figure 3 showing thematerial from which the pads are cut.

, Figure 5 is a section taken on the line 5--5 of Figure 1.

Referring to the drawing in detail, the num- 'eral 1 indicates a rectangular block fixedly mounted on and transversely of a frame 2. The block 1 is formed centrally thereof with a substantially I-shaped slot 3 having a pair of outer .portions and an intermediate portion of greater length than that of either outer portion. Each outer portion includes a straight'outer end wall, a pair of parallel straight side walls of less length than said end wall and an inner end wall formed of a pair of oppositely disposed outwardly curved sections spaced at their inner ends from each other and each having its outer end the a merging into the inner end of a side wall. The

outer 'ends of said side walls merge into the ends of the outer end walls. The intermediate portion includes a pair of closely arranged straight spaced parallel walls merging into the inner ends of the sections of the inner end walls of said outer portions. Seated on the block 1 are a pair of oppositely disposed die plates' l which are of less length than the length of the slot 3 and which are disposed with their opposing edges flush with the walls of said intermediate portion and the sections of the inner end walls of the outer portion of the slot 3.

Slidably extending through the sides of frame 2, the ends of block 1 and through suitable bearings 5 seated upon block 1 are a pair of rods 6 having their lower ends connected together by means of a rod '7 which is pivotally connected with a connecting rod 8 in order that the rods 6 may be reciprocated through the block 1 and bearings 5. Fixedly secured to the upper ends of the rods 6 is a cross head 9 to the lower face of which is secured by holdfast means 9' a knife 10. The knife 10 comprises a rectangular body 10 having a portion thereof corresponding to the contour of that of slot 3. The body 10 is a cut away at each side of its top, as at 10" to provide clearances for a purpose to be referred to. The body 10 includes a lengthwise extending centrally disposed upstanding thin part 10 arranged inwardly of the clearances and merging at each end into the vertical median of a flared part 11. The flared parts 11 are oppositely disposed with respect to each other. The bottom of part 10" is formed with a cutting edge 11' which inclines upwardly from each end to the transverse center of such bottom. The cutting edge 11 merges at each end thereof into the transverse center of a flared cutting edge 11" formed at the bottom of each flared part 11. Each cutting edge 11 extends upwardly from each end thereof to its transverse center. The cutting edge 11' is arranged above the cutting edges 11". The arrangement provides the knife 10 with a longitudinally disposed central cutting edge and a pair of transversely disposed end cut ting edges merging centrally thereof into the ends of the central cutting edge and with each of said cutting edges inclining upwardly from its ends to its transverse center in order that the knife will have a shearing action from both ends when it is lowered through slot 3.

In the use of the device to cut a pad such as 12 from a strip of material such as 13, the knife 10 is lowered through the slot 3 to out off a portion of the material, with the rear edge of such cut off portion, as well as the front edge of the remaining material, having rounded corners. The knife is then raised and the material is advanced a distance equal to the width of the pad to be cut. The knife is then again lowered through the slot 3 to cut off another portion of material which completes the formation of the pad. Owing to the upward inclination of each of, the cutting edges from both ends thereof toward the center, the edge engages the material 3 simultaneously at both side edges of the latter whereby a shearing action is had from both sides of the material toward the center thereof. Obviously a sanitary napkin embodying, a pad having rounded corners may be made less bulky and more comfortable than a similar pad having square corners without sacrificing any of the effectiveness of the napkin.

In order to' prevent any possibility of the material 13 or pad 12 sticking to the knife when the latter is raised, I provide a pair of stripper plates 14 on opposite sides of the knife 10 and which are of less length than the body 10. Each stripper plate 14 is secured to the lower end of a pair of rods 15 which pass through the cutouts 10" and slidably extend through the head 9. The rods 15 are provided at their upper ends with stop nuts 16. When the knife is lowered the plates 14 are lowered therewith and engage the material slightly in advance of the knife, thereby tending to prevent any displacement of the material when the knife is engaged therewith. As the knife is lowered through the slot 3, the rods 15 slide through the block 9, and as the knife is raised following the cutting operation, the rods 15 again slide through the head 9 until the latter is brought into contact with the stop'nuts 16. Prior to the engagement of the head with the stop nuts 16, the knife will clear the material and pad and any possibility of the material and pad sticking to the knife is prevented by the weight of the plates 14.

While the embodiment of the device herein illustrated and described is to be considered as a preferred example of the same, it is to be understood that changes in the size, shape and arrangement of parts may be resorted to, so long as such changes fall within the scope of the appended claims.

What I claim is:

1. A pad cutting device comprising a stationary block formed with an I-shaped slot having spaced portions of each side wall thereof upon an outwardly directed curve, a pair of spaced parallel die plates seated on said block, of less length than that of said slot, having the opposed edges thereof fiush throughout with said side walls and for supporting a portion of a web of material from which the pads are cut, a reciprocatory rectangular knife element having a portion conforming in contour to that of said slot, said portion being formed with a pair of oppositely disposed flared transversely extending end cutting edges and a lengthwise extending central cutting edge merging at its ends into the transverse centers of said end cutting edges, each of the said end cutting edges inclining upwardly from each end thereof to its transverse center, said central cutting edge inclining upwardly from each end thereof to its transverse center, said portion being adapted for passage through the material, between said die plates and through the slot for severing the web at successively spaced points to provide a pad with rounded corners.

2. A pad cutting device comprising a stationary block formed with an I-shaped slot having spaced portions of each side wall thereof upon 'an outwardly directed curve, a pair of spaced parallel die plates seated on said block, of less length than that of said slot, having the opposed edges thereof fiush throughout with said side walls and for supporting a portion of a web of material from which the pads are cut, a reciprocatory rectangular knife element having a portion conforming in contour to that of said slot, said portion being formed with a pair of oppositely disposed flared transversely extending end cutting edges and a lengthwise extending central cutting edge merging at its ends into the transverse centers of said end cutting edges, each of the said end cutting edges inclining upwardly from each end thereof to its transverse center, said central cutting edge inclining upwardly from each end thereof to its transverse center, said portion being adapted for passage through the material, between said die plates and through the slot for severing the web at successively spaced points to provide a pad with rounded corners, a vertically movable cross head,said element being fixed against the lower face of the cross head, the latter being formed with spaced pairs of spaced openings, a stripper at each side of and of less length than said element, two spaced pairs of spaced rods slidably extending through said openings, one of the rods of each pair of rods fixed at its lower end to a stripper, stops upon the upper ends of the rods, and said element having the upper portion of each side thereof provided with a clearance for said rods.

3. A pad cutting device comprising a stationary block formed with an I-shaped slot having spaced portions of each side wall thereof upon an outwardly directed curve, a pair of spaced parallel die plates seated on said block of less length than that of said slot, having the opposed edges thereof flush throughout with said side walls and for supporting a portion of a web of material from which the pads are cut, a reciprocatory rectangular knife element having a portion conforming in contour to that of said slot, said portion being formed with a pair of oppositely disposed flared transversely extending 115 end cutting edges and a lengthwise extending central cutting edge merging into and centrally of said end cutting edges, said portion being adapted for passage through the material, between said die plates and through the slot for severing the web at successively spaced points to provide a pad with rounded corners, a vertically movable cross head, said element being fixed against the lower face of the cross head, the latter being formed with spaced pairs of spaced 5 openings, a stripper at each side of and of less length than said element, two spaced pairs of spaced rods slidably extending through said openings, one of the rods of each pair of rods fixed at its lower end to to a stripper, stops upon the upper ends of the rods, and said element having the upper portion of each side thereof provided with a clearance for said rods.

4. A pad cutting device comprising a stationary block formed with an I-shaped slot having spaced portions of each side wall thereof upon an outwardly directed curve, a pair of spaced parallel die plates seated on said block; of less length than that of said slot, having the opposed edges thereof flush throughout with said side walls and for supporting a portion of a web of material from which the pads are out, a reciprocatory rectangular knife element having a portion conforming in contour to that of said slot, said portion being formed with a pair of op- V5 positely disposed flared transversely extending end cutting edges and a lengthwise extending central cutting edge merging at its ends into the transverse centers of said end cutting edges, each of the said end cutting edges inclining up- 100 wardly from each end thereof to its transverse center, said central cutting edge inclining upuwardly from each end thereof to its transverse center, said portion being adapted for passage through the material, between said die plates and through the slot for severing the web at suc-

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