US2268820A - Machine for cutting articles - Google Patents

Description

Jan. 6, 1942. D. o. HANNAN I 2,268,820

MACHINE FOR CUTTING ARTICLES Filed Nov. 29, 1940 /NVE/VTOR 0.- 0. HANNAN 2AM Z.

Patented Jan. 6, 1942 I. a I a Z,268,820

Dan 0. Hannan, Baltimore, Md., assignor to Western Electric Company, Incorporated, New York, N. Y., a corporation of New York Application November 29, 1940, Serial'No, 367,701

7 Claims. I (01. 164-60) This invention relates to a machine for cutting articles and more particularly to a machine for cutting insulation on a conductor.

In order to make an electrical connection to an insulated conductor, it is necessary to remove the insulation. In the past this has sometimes been doneby cutting or scraping the insulation from the conductor by means of pliers or a knife.

tion is taken off or the conductor itself is damaged.

An object of the present invention is the provisionof a machine for expeditiously making .a

circumferential cut, as through the insulation on a conductor, without cutting the conductor itself.

In accordance with one embodiment of this invention, the insulation is cut by a rotating circular cutter while the conductor is supported in the proper relation to the rotating cutter by means of adjustable rollers, and the conductor is rotated on said rollers by means of a block which is pressed against the conductor and moved in a direction tangential to the revolving circular cutter.

A better understanding of the invention may be had by reference to the following description and the accompanying drawing, in which The single view of the drawing is a fragmentary elevational view of the machine.

The complete assembly of the apparatus is supported upon a work table or bench I. Mounted below the surface of this bench and completely covered or guarded during the working operation, is a high-speed rotating circular cutter 2. This cutter is rigidly mounted on a shaft having also secured thereto a pulley l3. Passing over this pulley is a belt I l which serves to impart high-speed rotation to the cutter from a source of power such as a motor, not shown.

This method is slow and has the added disadvantagethat often too much insula-- Positioned over the cutter and partially coverupon the cutting edge of the rotating disk cutter.

The operation of the device is as follows:

The operator adjusts the distance between the rollers 4 and 5 by means of screw 8. When this distance is properly set, the revolving cutter 2 will out through the insulation but will not cut the conductor. The conductor 3 is placed on the rollers 4 and 5 with the cutter 2 at the point on the conductor where the circumferential cut is to be made. The block 9 is then pressed lightly down on the conductor and moved to the left as viewed in the drawing. The friction between the block and the conductor will roll the conductor v in counterclockwise direction until the entire circumference of the insulation has been out. It is then a simple matter for the operator to strip the insulation from the end of the conductor to the circumferential cut. The circumferential.

cut will stop the insulation from tearing beyond the desired point.

As shown in the drawing, the members 5 and 1 act as guards to prevent the operators hand from coming in contact, with the revolving knife. The only exposed portion of the knife is that which is between the rollers and this is below the surface of the work bench.

It may be readily observed that during the entire cutting operation the rotating cutter is completely covered by the adjustable blocks and conductor, thus preventing injury to the operator.

The embodiment of the invention herein disclosed is illustrative only and may be widely modified without departing from the spirit and scope of the invention, and is to be limited solely by the appended claims.

What is claimed is:

1. In a machine for cutting a sheath, a rotary cutter, and means to support the sheath sothat the cutter can only cut to a predetermined depth comprising opposed rollers rotatably supporting the sheath.

2. In a machine for cutting insulation on a conductor, a bench, a rotating cutter supported with the periphery of the cutter below the surface of the bench, and conductor supporting means adjacent the periphery of the cutter comprising opposed rollers for rotatably supporting the conductor to receive a circumferential cut.

3. In a machine for making a circumferential cut in the insulation on a conductor, a bench, a rotary cutter supported on the bench with the periphery of the cutter below the surface of the bench, opposed rollers forming a semi-circle for supporting the conductor in position to be circumferentially cut, and means to rotate the conductor on the rollers.

4. In a machine for cutting a tubular sheath, a revolving cutter, opposed rollers for supporting the conductor in proper position to be cut, and a block for revolving the conductor in a direction opposite to the revolution of the cutter.

5. In a machine for cutting the insulation on a conductor, a revolving cutter, opposed rollers arranged substantially in a semi-circle adjacent the periphery of the cutter for supporting the conductor, and a block for rotating the conductor by pressing it between the said block and the said rollers and moving the block in a straight line.

6. An apparatus for cutting a sheath on a conductor comprising a table, a rotating cutting disc mounted under the surface of said table, said table having a slot above said cutting disc, and rollers adjacent the periphery of said cutting disc for supporting a sheathed conductor in such a position that the sheath will be cut circumferentially.

7. An apparatus for cutting a sheath on a conductor comprising a driven cutting disc of large diameter relative to the diameter of said sheath, and a plurality of rollers adjacent the periphery of said disc for supporting a conductor and limiting its movement toward said disc.

DAN O. HANNAN.

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