US3453917A - Bx cable cutter - Google Patents

Description

u y 8, 1969 F. J. PERRY 3,453,917

BX CABLE CUTTER File d Dec. 19, 1966 United States Patent 3,453,917 BX CABLE CUTTER Frederick J. Perry, North Arlington, N.J., by Mamie Perry, executrix of said Frederick J. Perry Deceased Filed Dec. 19, 1966, Ser. No. 602,964 Int. Cl. B26d 7/04 US. Cl. 83-454 1 Claim ABSTRACT OF THE DISCLOSURE BX cable is cut without touching the insulation with a rotary cutter adjustably mounted on a work clamp base.

This is a device designed primarily to cut BX cable without touching the insulation of the wires contained therein, and consists primarily of a rotary cutter adjustably mounted on a base and a means of holding the cable in a fixed position with relation to the cutter during the operation.

Obviously, while the use of the device as above set forth is its primary one, it may be used for other purposes.

An object of the invention is to provide a device which will cut BX cable accurately and with precision without injuring the wires, or the insulation on the wires, contained therein.

A further object is to provide a device of the character described which will be simple to operate and which will be economical to manufacture.

A still further object is to provide a device that may be used in restricted areas and relatively small places without difliculty and without impairing the efliciency of the operator.

Another object is to provide a device that may be efiiciently usedby relatively unskilled workers without prior extensive training or practice.

With these and other objects in view, reference is had to the accompanying drawings.

FIG. 1 is a perspective view of the preferred form of the device.

FIG. 2 is a cross sectional view of the device showing the device indicating its adjustability to different sized cable.

FIG. 3 is a perspective view of a section of BX cable after it has been cut.

FIG. 4 is a perspective view showing a modified operating handle.

Referring more particularly to the drawings, my device has a substantially L-shaped frame upon which the cutting wheel 11 is mounted on a hub 12 which has a reduced extension 19 extending through the opening or slot 17 in the upright portion 16 of the base. The cutting wheel 11 is secured to the hub 12 by the disc 14 and the screw 14'. The disc 14 also acts as a stiifening plate for the cutting wheel -11. An additional spacer disc 20 is mounted on the extension 19 and is held in place by the machine screw 21. The end of the hub extension 19 is internally ice threaded to receive the threaded end of operating handle 18 which may be in the form of a crank as shown in FIG. 2 or in the form of a wing 28 as shown in FIG. 4. The hub 12 carrying the cutting wheel 11 is urged downwardly by the plunger 15 and the compression spring 15.

On the base 28 of the frame 10 is an upright extension 27 secured thereto by means of the machine screw 29 and mounting the thumb screw 26 which is used to position the cable to be cut.

In operation the BX cable 25, to be cut, is placed under the cutting wheel 11 by raising the: cutting wheel against the pressure of the spring 15'. It is then fastened in place by the thumb screw 26 and the handle turned until the desired cut is completed. Since the hub 12 limits the depth of the cut, it is not possible to injure the wires 22 within the cable.

It will be appreciated that the frame '10 may be made of any suitable material, but I have found that aluminum is highly adaptable as it is light and sufficiently rigid. Screw or bolt holes may be provided in the base 28 if it is desired to mount the device permanently.

The cutting wheel 11 is made of hardened steel and preferably has 88 cutting teeth for best results, The cutting wheel 11 also has a keyway to prevent slippage.

What I claim is:

1. A device for cutting BX cable including a base portion having means to hold cable to be cut, an upright portion at right angles to said base portion having an elongated slot therein, an annular hub member having a reduced portion and a drum on the outer end of said reduced portion, said reduced portion extending through said slot, a collar on said reduced portion to position it in said slot, a spring in said slot engaging said reduced portion to urge said drum downwardly toward said base, a stiffening disc on the outer end of said drum of the same diameter as said drum, a cutting member between said drum and said stiifering disc and keyed to said drum, said cutting member being of a greater diameter than said drum, means to rotate said drum and cutting member, the difference between the diameter of the drum and the diameter of the cutting member determining the depth of the cut when the cutting member is brought into contact and pressed by said spring against the cable while said drum and cutting member are being rotated.

References Cited UNITED STATES PATENTS 2,642,651 6/ 1953 St. Palley 30-903 2,654,941 10/1953 Schleimer 30-903 2,674,027 4/ 1954 Kosinski 30-903 3,022,574 2/ 1962 Green et al. 30-903 FRANK T. YOST, Primary Examiner.

US. Cl. X.R.

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