US1069396A - Cutting-machine. - Google Patents

Description

A. J. CUMNOGK.

CUTTING MACHINE. APPLICATION FILED FEB. 18, 1907.

Patented Aug. 5, 1913.

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A. J. OUMNOGK.

CUTTING MACHINE.

APPLIGATION FILED FEB.18, 1907.

1,069,396, I Patented Aug. 5, 191-3.

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Patented Aug. 5, 1913.

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yMrMA-I W A. J. GUMNOGK.

CUTTING MACHINE.

APPLICATION FILED I'EB.18, 1907.

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CUTTING-MACHINE.

To all whom 2'25 may concern Be it known that I, ARTHUR J. CUMNooK, a citizen of the United States, and resident of Eye, New York, have invented certain new and useful Improvements in Cutting- Machines, of which thefollowing is a specification, accompanied by drawings.

This invention relates to cutting machines, more particularly to rotary machines for accurately cutting sheet material.

The objects of the invention are to improve upon the construction and operation of such machines and enable the cutting to be done with reference to some particular point or points in the sheet.

F urthcr objects of the invention are to avoid the multiplication of errors with relation to the points above referred to with reference to which the cutting is to be done and allow manipulation of the sheet by hand to overcome any inaccuracies in the material, thus dispensing with the necessity of accurate measurements on the material.

Further objects of the invention will here inafter appear and to these ends the invention consists of a machine for carrying outthe above objects embodying the features of coi'istruction, combinations of elements and arrangement of parts having the general mode of operation substantially as hereinafter fully described and claimed in this specification and shown in the accompany ing drawings, in which- Figure 1 is a plan view of the machine embodying the invention; Fig. 2 is a front elevation of the machine; Fig. 3 is an end elevation partly in section on the line 33 of Fig. 2, looking in the direction ofthe arrows; Fig. 4 is an enlarged detail longitudinal sectional elevation partly in section taken through the r 16.8 of two of the rollers; Fig. 5 is a plan view of the material shown as fabric to be cut and illustrating in dotted lines the articles to be cut out of the material; Fig. 6 is a development of one of the rotary dies; Fig. 7 is an enlarged detail perspective view of a portion of one of the feed chains.

The machine illustrated in the drawings is designed for running a double line of collars, but I am not to be understood as limit ing the invention to a double machine, nor a machine for running collars, for the machine may be run single and any other desired objects may be cut. The machine is self feeding, and is so constructed that there Specification of "Letters Patent.

Application filed February 18, 190-7.

Patented Aug. 5,1913. Serial no. $57,848.

is a minimum amount of waste of material 7 in cutting the collars or other objects.

Before proceeding to the description of the mechanical parts of the machine, reference will be had to Fig. 5, which illustrates the material to be cut and the articles to be cut therefrom. In this instance a double line of collars are to be cut from a suitable fabric. The fabric G is of double thickness and may be a tubular fabric if desired. As shown, the fabric is provided with interwoven portions H, and in cutting the collars it is desired to cut the outline of each collar around one of the interwoven portions H. The places to be out are represented in dotted lines in Fig. 5, from which it will be seen that the portions to be out are nested, so to speak, thereby utilizing as much as possible of the fabric and avoiding waste material. Furthermore the material is cut and severed down the middle on a continuousline, forming a continuous pattern as it were.

Referring to the drawings A represents the side frames of the machine and B is a smaller frame of any suitable character. The rotary dies C and D and cooperating pressure rolls E and F are rotatably sup ported between the side frames A, and suitable operative connections are provided for driving the dies and rolls from the pulleys F carried on the shaft G, supported in suitable bearings between the frames A and B. The shaft G is provided with a gear I, meshing with pinions J, connected to the ends of shafts K an'd L carried by the rotary dies C and D respectively, whereby rotary motion in the same direction is imparted to each of the rotary dies. The other ends of the rotary dies are provided with corresponding shafts O and P also supported in suitable bearings in the opposite frame A.

A development of one of the rotary dies is shown in Fig. '6, from which it will be seen that each die is provided with a plurality of cutters Q so that two articles or objects. as for instance collars are cut from the fabric at every revolution of the die. The particular form of the cutters Q is not material, except that according to this invention the inner ends of the rotary dies C and D are adapted to overlap slightly, or some equivalent arrangement is provided, whereby the cutters Q overlap to cut the material shown, the projecting points or cornersof permit the pins to pass through as indicated the knives on one die D are adapted to fall opposite the recessed portions of the cutters on the other die C as the dies are rotated and this construction is fully'illustrated in the plan view in Fig. 1. Oooperatingwith each rotary die is a pressure roll E or F, and these rolls are suitably supported in vertically movable frames R and S, pivoted at T to the inner ends of rocking arms U, which are in turn pivoted at V to longitudinal shafts IV supported in the frames A, or other equivalent mechanical constructions may be provided whereby provision is afforded for slight vertical movement of the frames R and S. Suitable adjustable weights X are provided at the outer ends of the rocking levers U, whereby the pressure rolls are continuously forced upwardly against the rotary dies C and D. The pressure rolls E and F are idlers and are provided with journals a and b suitably supported on the upper ends of themovable frames It.

Means are provided for feeding the material to the dies and pressure rolls, and at the same time permitting the manual manipulation of the material to overcome any inaccuracies therein and permit feeding the material as desired to the dies. Any suit able means may be provided for this purpose, but I have shown chains 0 and (Z, which will form an efficient means. The chains may be constructed in any suitable manner, as for instance like those illus trated in'the drawings comprising the alternate solid lengths e and bars f rivetedto gether, such a ehainbeing adapted to pass over ordinary sprockets g. The power for actuating the sprocket chains 0 and (Z is derived from the rotary dies, and the feed roller 7 is an idler suitably supported in bearings 11 in the frames A and provided with the sprockets g at its ends of the chains. As shown, in this instance, the j ournals a of the pressure rolls 6 and f are provided with sleeves having gears k meshing with gears 0 on the rotary dies. Said sleeves are also provided with the sprockets g for the chains, whereby rotary motion is trans mitted from the gears 0 to the sprocket 7, thereby driving the chains and imparting rotation to the idler h.

At intervals on the inner sides of the chains 0 and asuitable upright pins 72 are provided, in this instance carried on horizontal fingers g, which are supported from the inner bars of the chains, although any other suitable construction may be provided. These fingers q extend inwardly a suflieient distance to bring the pins 7) beyond the ends of the rotary dies, and provision is afforded for permitting the fingers q and pins 7) to pass between the dies and pressure rolls, in this instance the dies being recessed at s to in Fig. 4:. This is done to save cloth, although the pins might be located beyond the ends of the rollers if desired, in which case a wider piece of material would be required, and there would be more waste.

Obviously the chains 0 and d do not necessarily need to be driven as described from the rotary dies, and they do not need to end at the pressure rolls, for these chains might be carried on rearwardly to the back of the machine if desired beyond the dies and rolls and be suitably connected to be driven from some other place in the machine. The construction described and illustrated is simply one suitable form of the apparatus, and I am not to be understood as limiting the machine to the construction described. Furthermore the machine may be run single instead of double if desired by simply arranging another chain at the opposite end of the rotary die D for instance and feeding material of substantially one-half the width of that required for a double machine. In this case the rotary die D and the pressure roll F would be in operation only, and a single line of collars or other articles would becut. Similarly the rotary die G might be operated single without the die D by suitable arrangement of chains which may be driven in any suitable manner and from any suitable part of the machine.

I have shown a pressure roll for each one of the rotary dies, but I am not to be understood as limiting the invention to this construction, for the invention contemplates a plurality of dies in combination with one pressure roll for all of the dies. The dies would all cotiperate with the one pressure roll, which is all that is necesary in some forms of construction. There are two primary objects in overlapping the dies. By so doing a pattern may be formed and the cutting is continuous. By continuous cutting I mean the cutting of a straight or curved line without a break. If one rotary die is used having a plurality of different cutters there on and one pressure roll is used to cooperate with the one die, there are times obviously when some of the cutting points are not doing their duty, owing to wear or lack of adjustment of the machine. The pressure roll would only touch the most prominent points which would therefore be in operation, while the other points would be out of operation. This is the great-detect of single rolls having a plurality of points. By providing a plurality of dies in combination with means for pressing the material against the dies in suchmanner that only two points are in contact at any one time so as to automatically take up wear or provide for lack of adjustment of the parts, lost motion, and other reasons for inaccurate work, I overcome the disadvantages of the single die having a number of cutting points. If a single pressure roll were used, each rotary die should be adjustable to automatically take up wear or lost motion, in which case substantially the same results would be obtained and defects of old'machines over come.

the machine in front of the idler h and grasping the piece of material in both hands stretches it between the chains 0 and d and fastens the edges of the material on to the pins p. An expert operator will be able to arrange the material with suflicient accutomatically draw the material forward, and

the chains are primarily to present the material accurately to the dies.

Obviously some features of this invention may be usedwithout others and the invention may be embodied in widely varying forms.

In the operation of the apparatus, an at- 'tendant or operator stands at the front of Therefore, without limiting the invention to the devices shown and described, and without enumerating equivalents, I claim and desire to obtain by Letters Patent the following 1. In a rotary cutting machine, the combination of a plurality of die rolls and pressure rolls, movable supports for the pressure rolls, means for forcing said supportsand rolls toward the die rolls, and means for driving the die rolls.

2. In a rotary cutting machine, the combination of a plurality of die rolls and pressure rolls, movable supports for the pressure rolls, means for forcing said supports and rolls toward: the die rolls, traveling means for continuously carrying the material forward toward the dies, and means for driving the die rolls. v p

3. In a cutting machine, the combination Wit-ha rotary die, of a pressure roll and a traveling carrier arranged at one end of the die and roll, projections from said carrier extending within ofl-set portions in said die, substantially as specified.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

' ARTHUR J. CUMNOCK. Witnesses:

E. VAN ZANDT, A. L. OBRm v.

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