US609896A

US609896A - Rotary cutter

Info

Publication number: US609896A
Authority: US
Publication date: 1898-08-30
Anticipated expiration: 1915-08-30

Description

No. 609,896. Patented Aug. 30, I898.

E. MORRIS.

ROTARY CUTTER.

(Application filed Nov. 12, 1897a (No Model.) 2 Sheets-Sheet l.

E. MORRIS.

ROTARY CUTTER.

I (Application filed Nov. 12. 1897.) (No Model.)

Patented Aug. 30, I898.

2 Sheets-Shut 2. v

NlTED STATES PATENT OFFIC EDMUND MORRIS, orMIoI-IIeAN CITY, INDIANA.

ROTARY CUTTER.

$PECIFICATION forming part of Letters Patent No. 609,896, dated August 30, 1898. Application filed November 12, 1897. Serial No. 658,327. (No model.)

To all whom it may concern.-

Be it known that I, EDMUND MORRIS, a citizen of the United States, residing at Michigan City, in the county of La Porte and State of Indiana, haveinvented certain new and usef ul Improvements in Rotary Gutters, of which the following is a specification.

In my application for patent filed Novemher 6, 1897, Serial No. 657,680, I have described means for forming a gang of composite threads, which are, after being formed, out up into individual threads. My present invention relates to the machine for cutting the individual threads from the gang.

I11 the drawings, Figure 1 shows a side elevation through my improved machine. Fig. 2 shows a front elevation thereof. Fig. 3 shows a longitudinal central section. Fig. 4 shows a rear elevation. Fig. 5 shows a section on the line 3 3 of Fig. 3. Fig. 6 shows a cross-section and a perspective view of a gang of threads upon which my improved machine is adapted to operate.

Two horizontal parallel shafts A B are j ournaled in standards 0, mounted on abed-plate D. The shafts are geared together and the lower shaft is extended to receive a pulley E, to which power may be applied, Upon the upper shaft A is fitted a series or gang of rotary cutters F. Upon the lower shaft is a corresponding gang of cutters G. All of these cutters are of the same thickness or width and this width corresponds exactly with the width of the threads produced. The cutters are so disposed that the peripheries ofone series intersect or overlap the peripheries of the other in order to shear the fabric. The cutters of each gang are separated from one another by collars g, interposed between them, said collars being of the same width as the cutters and of the same width as the threads produced. The faces of the cutters F of the upper series are grooved at f to fit the convex upper sides of the threads inorder to prevent any distortion or marring of the surface thereof, and the faces of the lower cutters are grooved at g for the passage of the ribs .2, which contain the wires .2. The

grooves g are preferably somewhat larger than the ribs usually require, so as to give plenty of room in case the wires are slightly displaced. The grooves in the upper cutters may be more concave than is required to fit the threads, so that the fabric shall be pressed upon by the cutters only along the lines where it is to be cut--that is to say, the cutters are so constructed that they do not press upon all portions of the fabric, but only along the thin edges or webs between the threads.

It is important that the fabric be guided very correctly with reference to the slittingcutters, so that it shall be out only on the lines between the threads. For this purpose I employ a guide H, preferably constructed as follows: A guide-bar h is arranged transversely in rear of the cutters andis supported on standards it, mounted on the bed-plate D. The lower side of the guide-bar h is corrugated, as shown at 72/2, to permit the pa'ssage of the fabric. Below the guide-bar his arranged another guide-bar H, which is pivstraight line, each individual thread passing through individual corrugations in the guidebars. Thesecorrugations,however,aremade slightly larger than the threads, so as not to exert pressure thereon, but are sufficiently small to prevent the threads from being dislodged. The pressure exerted by the spring h is not such as to cause the guide-bars to bite or unduly press the fabric, but is merely sufficient to keep the threads in line and permit the bars to yield to accommodate any slight inequalities in the fabric.

I claim as my invention- 1. The combination of a gang of circular cutters having concave grooves in their peripheries, another gang of circular cutters overlapping the cutters of the first-mentioned gang and having relatively narrow grooves in their peripheries.

2. The combination of a gang of circular cutters having concave grooves in their peripheries, a second series of circular cutters having relatively narrow grooves in their pearranged beneath the first-mentioned grooves, ripheries, and a guide having corrugated but smaller in cross-section than said grooves. 10 openings placed opposite the grooves in the In testimony whereof Ihave hereunto subcutters. V scribed my name.

5 3. The combination of the rotary cutters EDMUND MORRIS.

and a guide, consisting of an upper guide- Witnesses: bar having a series of curved grooves, and a' HENRY B. MORRIS,

lower guide-bar having a series of grooves HENRY V. HITOHCOOK.