US1767342A - Armored-conduit-cutting tool - Google Patents

Description

June 24,-. I930.

' I. L. BLAKE ARMORED CONDUIT CUTTING TOOL Inventor 25m n fi-Elafie M Filed April 6, 192a Patented June 24, 1930 UNITED STA res [FATE IVAN L. BLAKE, or HANNIBAL, NEW YORK- i nnmonnn-oonnnnrsoortrrne 01;

Application filed April e, 1928. Serial no; 268,001. v

Thepresent invention relates to improvements in tools and has reference more particularly to an implement for cutting armored conduits that are constructed of metal 5 ribbon wound into a spiral tube.

One of the important objects of the present invention is to provide a tool of this above mentioned character which will, at all times, be positive and efficient in its operation, the

same being further simple in construction, inexpensive, strong and durable, and further well adapted to the purpose'for which it is designed.

A further object resides in the provision of a cutting-tool of the above mentioned character wherein a hook formed on one of the pivoted elements is formed with grooves, in its inner face, complementary to the grooves of the armored conduit, so that said conduit will properly fit against the inner face of the hook to facilitate the slitting of the conduit by swinging a pivoted cutter into engagement with the conduit.

Other objects of the invention will become apparent as the nature of-the invention proceeds, and when taken in connection with the accompanying drawing.

In the accompanying drawing, forming a part of this application and in which like numerals designate like parts throughout the several views.

Figure 1 is a side elevation of the tool embodying my invention, showing the knife carryin'g lever in the act of swinging the knife into engagementwith aportion of the flexible conduit engaged with the hooked end of the lever or handle;

Figure 2'is an edge elevation of the tool.. Figure 3 is a vertical sectionalview through the hooked upper end of the lever showing the angularly disposedgrooves formed in the inner face thereof and also showing the upper end portionof the knife carrying handle or lever, the knife blade being removed,

and

F igure 1 is a sectional View; taken approx- 7 imately ,on the line 45-4 ofFigure 2, 1ook-- ing in the direction of the arrows. i

' In the drawing,- wherein for thepurpOse .of illustration is shown the preferred embodimentofmy invention, the numeral 1 designates a'lever thatis formed at its upper end with a forwardlya-nd downwardly curved hook 2, and as is more clearly shown in Figures 2 to 4 inclusive, the inner face of this hook is formed with the vertically disposed angulargrooves 3, for cooperation with the armored conduitA that is constructed of metal ribbon which is wound around a spiral tube, in the manner well known inthe art; The manner in which this armored conduit A engages with the grooved inner face ure 1. v

The lower end :of the lever is curved slightly as shownv alsoin-Figure 1. l

i'Therinvention"further comprehends the provision of the lever or handle 4, ,which 'is formed on one side at its upper end with-a plate like extension 5,"and as is-morefclearly shown in .Figuresl and 3, the upper end por tion of this lever is cut away as at 6, toform ashoulder against which the inner side face ofithelever 1 engages, whenthe levers are brought. together, a pivot" loolt- 7, extending through the plate likeze tension 5, and the portion of the-lever lbelow the hook 2, to

afford apivotal connectionbetween the le vers A nut8 isithreadedon the threadedend of theboltg' j v a Forming asalient partofthepresent inotherwise.secured=fto the front side' of the lever or handle 5, thefsecuringmeansfor the bladebeing. shown at"10. J The upper portion vention'isthe fiat blade 9,- that is riveted, or

of theablad'e projects above. the upper end ofithe lever- 4 and the bolt TeXtends'through V the upper portionof'the blade and finithis' .manne'r, the plate like extensions will be disposed against the rear side of'the lever 1,

While the upper portion of the blade will be disposed against the front side of the said lever.

The upper edge portion of the blade 6 is sharpened to provide a cutting edge 11 and as is more clearly illustrated in Figure 1, thiscutting edge'is of serpentine shape and also one end of the cutting edge is higher than the other end for a purpose to be here- 1 will be effectively supported in the hooked upper end of the lever 1.

By swinging the free end of the lever or handle 1, which is'also curved slightly in wardly, toward the lever 1, said lever 4 will swingon the pivot 7 to move the cutting edge 11 into engagement with the convolutions of the armored conduits at the bottom thereof.

The serpentine cutting edge 11 will slit the I bottom portion of the armored conduit and by constructing the cutting edge of the blade in the manner shown, the same will effectively split the armored conduit.

The simplicity ofmy improved tool, enablesthe same to be readily and easily operated, and furthermore the tool can be manufactured at a very low cost and yet be strong and durable.

While I have shown the preferred embodiment of my invention, it is to be under- 7 stood that minor changes in the size, shape,

and arrangement of parts may be resorted to,

without departing from the spirit of the invention and the scope of the appended claims. w v

Having thus described my invention, what I claim as new is:

. 1. In a tool for. slitting'armored conduits longitudinally, a lever, a conduit engaging 1. hook formed on the upperend' of the lever,

an additional lever, a plate like extension on therear side of said additional lever at the upper end thereof for disposition against .the rear side of the first mentioned'lever, a

blade secured at its lower portion on the front side ofthe second lever,-the upper'end longitudinally, a pair of pivotally connected levers, a conduit engaging hook formed on the upper end of one lever, the inner face of the hook being formed with means for engagement with the cable to prevent longitudinal movement of the latter, a blade secured on the other lever, the upper edge of said blade being formed with a serpentine cutting edge the rear salient of which is higher than the other for engagement with the bottom portion of the conduit, to slit the conduit longitudinally.

V In testimony whereof I afi'ix my signature.

. IVAN L. BLAKE.

of said blade being projected againstthe front side of the first mentioned lever, a pivot pin extending through the blade and the plate like extension and through the first mentioned lever, theupper edge'of the blade being sharpened for cutting engagement with the bottomjportion of the armored conduit engaged by said hook.

2., In a tool for slitting. armored conduits

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