US469073A - Cloth-cutting machine - Google Patents

Description

(No Model.)

A. WARTH.

CLOTH CUTTING MACHINE.

No. 469,073. Patented Peb. 16, 1892."

' Afro/mns I UNITED STATES PATENT OFFICE.

ALBIN IVARTI-I, OF STAPLETON, NEIV YORK.

CLOTH-CUTTI NG MACH IN E.

SPECIFICATION forming part of. Letters Patent No. 469,073, dated February 16, 1892.

Application ned ruiy 9,1891. semina. 398.971. mq model.)

lments in Cloth-Cutting Machines, of which the following is a specification.

This invention relates to an improvement in cloth-cutting machines of that class in which the motor is supported by and moves with the standard carrying the knife and the cloth-lifting foot-plate. In machines of this class it is essential that the knife shallbe guided so as to follow steadily and without fail the contours of the diiferent patterns to be cut, andl at the same time a Very rapid motion must be imparted to the knife in order to accomplish the required amount of Work, and my experience is that when the motor is placed on the top of the standard and a rapid motion is imparted to the knife below the weight of the motor above has a tendency to cause the machine to rock to and fro and to render it extremely difficult, if not impossible, to guide the knife so that it follows the contours of the pattern, particularly if the same are curved or angular.

The object of my invention is to steadythe machine during the operation of cutting, and for this purpose I have placed the motor upon a circular guide which rises from the footplate and through the interior of which eX- tends the belt for imparting motion to the knife, said circular guide being made to engage an arm which can swing freely round a pin, as more fully pointed out in the following Specification and claim, and illustrated in the accompanying drawings, in which Figure l represents a side elevation of a cloth-cutting machine embracing my present invention. Fig. 2 is a vertical section in the plane Fig. l, on a larger scale than the previous figure. Fig. 3 is a vertical section in the plane y y, Fig. l. Fig. 4is ahorizontal section in the plane z z, Fig. l. Fig. 5 is a Vertical section of a modification.

In the drawings, the letterA designates the cloth-lifting foot-plate, from which rises the standard B, which carries the knife G. To the standard B is firmly secured the circular guide C, which engages an eye c, formed on the arm J whichY is connected to the arm L.

to the knife G by means of a belt K, which extends down through the guide C.

In the example illustrated in Figs. l and 2 of the drawings a rot-ary knife is -shown; but the belt K may be used to impart motion to a reciprocating knife carried by thestandard B, as shown in Fig., 5, in which the pulley R is provided with an eccentric groove r, which engages a pin s, projecting from the knife G, so that when the pulley revolves a reciprocating motion is imparted to the knife.

The connectionv between the arms J and L may be effected by means of a hanger N and rod O, so that the arm .I can freely swing round on said rod or the two arms may be joined in any other suitable manner. The arm L is free'to swing round on the shaft L.

In the example shown in the drawings the base-plate of the motor M is provided with a plug P, which [its the guide C and which may be hollow, so that the belt K can freely pass through the same or it may be provided with one or more channels for the passage of said belt. The guide incloses the belt K, so that the eye c can be readily applied to said guide and the cloth-lifting foot-plate A, with the standard B, the yknife G, and motor M, can be moved so that the knife will follow the contours of the pattern without danger of interfering with the driving mechanism. At the same time the eye c and the arm L serve to retain the cutting-machine in an upright position, and the operative is enabled to guide' the machine with ease and facility.

I do not herein broadly claim the combination, with a standardcarrying a cloth-lifting foot-plate, a knife, and a pulley, from which motion is imparted to said knife, of a casing mounted on the standard and an arm constructed to swing or swivel in a spindle and to engage the easing, said pulleybeing adapted to engage a belt extending down through the casing;` nor do I herein broadly claim the combination, with a standard carrying a clothlifting foot-plate and a bracket, of the tubular bearing secured to said bracket and the shaft mounted in said bearing and carrying the pulley and the knife, said pulley being adapted to engage the driving-belt, and alu- IOO bricatingecup secured to the tubular bearing; and, further-31 dofv Ilotvherein claim the combination, with a standard carrying a rotary knife, of an osciliating spindle carried by said standard and extending in a direction transverse to the plane ot' the knife and two grinding-disks situated on opposite, sides of the knife and free to rotate on the spindle by frictional contact with the knife, as such combinations constitute the subject-matter of my application for Letters Patent filed of even date herewith, Serial No. 398,970.

What I' claim as new, and desire to secure by Letters Patent, iSv-'- The combination, with the cloth-lifting footplate,the standard rising from the foot-plate7 and the knife carried by the standard, of a circular guide C, supported by the standard, a motor mounted upon the guide and geared with the knife through the interior of said guide, and a movable arm J, provided with an eye which engages the guide between the motor and the foot-plate, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ALBN WARTH.

v Vitnesses:

W. HAUFF, ,t

E. F. KASTENHUBER.

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