US888240A - Blasting-tool. - Google Patents

Description

No. 888,240. PATENTED MAY IQ, 1908. L. K. KRAMER.

BLASTING TOOL.

APPLICATION FILED MAR. 1, 1906.

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WITNESSES Alzomey LEWIS K. KRAMER, OF MONTE VISTA, COLORADO.

BLAS'IING-TOOL;

Specification of Letters Patent.

Patented May 19, 1908.

Application filed March 7, 1906. Serial No. 304,774.

To all whom it may concern:

Be it known that I, LEWIS K. KRAMER, a citizen of the United States, residing at Monte Vista, in the county of Rio Grande and State of Colorado, have invented new and useful Improvements in Blasting-Tools, of which the following is a specification.

The invention relates to an improvement in blasting tools, and particularly to a combination tool for use as a fuse, cutter, splitter and crimper, a powder splitter and a fuse and cap setter.

The main object of the present invention is to provide a tool of the class described preferably constructed of sheet metal and conveniently and economically embodying the various tools described.

The invention will be described in the following specification, reference being had particularly to the accompanying drawings, in which Figure 1 is a perspective view of a tool constructed in accordance with my invention, Fig. 2 an end elevation of the same, Fig. 3 an enlarged sectional detail illustrating the con nection of the blade. Fig. 4 is a plan view of the jaw, showing the taper of the channel.

Referring to the drawings it is to be particularly noted that the tool described is of the plier type, comprising two members 1 and 2, hereinafter respectively termed the anvil member and operating member. Each of these members are preferably constructed of a single sheet of metal, suitably shaped, as hereinafter described, to form the member, though it is to be particularly understood that I do not desire to limit myself specifically to such construction. The anvll member comprises initially a single strip of sheet metal of the desired width and length, reduced in width intermediate its ends and bent at said reduced portion so as to provide a single length of material of double thickness, as at 3. In rear of the section 3 the strip is bent in concavo-convex form in section to provide a rounded handle portion 4 for the anvilmember. Forward of the section 3, the strip, of greater width at this point is bent on its longitudinal center at 5, said walls being projected from the bend in I approximately spaced parallel relation to provide a groove 6. From the upper edges of the walls of the groove 6, the further projections of said walls are flared in approximately circular form to provide a fuse receiving channel 7, the free upper edges of the walls being spaced to provide for the entrance of the blade, as hereinafter described. The fuse channel is preferably slightly divergent toward its mouth, whereby to provide for the accommodation of fuses of different sizes, it being understood that with a divergent channel the fuse to be operated upon is inserted into the channel at the mouth end and moved rearward until the converging walls form a stop.

Near the rear end of the channel 7 the upper edges of the walls thereof are formed with transversely alined depressions 8, forming a depression extending transverse the fuse channel of a size to receive the fuse for cutting purposes, as hereinafter described. At the juncture of the anvil proper with the reduced portion 3 of the member, the up er edge of said reduced portion is formed wit a notch 9, for a purpose to be later explained. As thus constructed the anvil member comprises a handle portion, a reduced intermediate portion of double thickness and an anvil proper including a longitudinally arranged fuse channel, a transversely arranged fuse depression, and a base groove arranged be-- low and in communication with the fuse channel, all as clearly shown in Fig. 1.

The operating member is also constructed of a single strip of sheet metal bentintermediate its ends on the longitudinal center to rovide a pivot section 10 of double thic ness of material, the strip in rear of said section being gradually reduced in width and rounded to provide a drill point 11, and serving in addition thereto as a handle forthe operation of said member 2. Forward of the section 10 of the operating member the material is bent on a longitudinal center inrounded form, as at 12, the walls inclining inwardly toward each other from said bend to provide an entrance opening 13 between said edges of less Width than the space between the walls at the bend, as clearly shown in Fig. 2. The free edges of the walls at the forward portion of the operating member are bent laterally from their normal plane at approximately right angles to provide lips end'of the blade, said inclined edge 20. being shar ened and'providing the cutting edge of the evice in use.

In assembling the parts the respective members 1 and 2 are pivotally secured.

through the medium of the removable pin 21, said passing through the sections 8 and 10 o' the respective members, the members being arranged so that the fuse channel 7 in the anvil-member opens toward the entrance opening 13 in the forward end of the o erating member, as clearly shown in Fig. 1. Tie blade 16 is secured in the operating member between the walls thereof, the pivot pin 21 serving to secure the stem in place between said walls, while the forward or cutter end of the blade is snugly held between the inclined walls at the operating end of the member 2, said blade being preferably of triangular shape in cross section with its base bearing against the rounded portion 12, of the operatlng head, so that the inclination of the walls of said head will serve to frictionally gripsaid blade and assist in retaining the same in operative position. When in place in the operating member the notch 19 in the blade registers withthe notch 15 in the section 10 of said member, and when assembled in pivotaljrelationthe members are so arranged that the cutting edge 20 of the blade is directly above the opening to the fuse channel, and the depression 9 in the section 3 and the notch 15 in the section 10 are adapted for operative register.

It is to be particularly noted that the re spective mem ers 1 and 2 extend throughout on approximately a straight line, so that the positions of the head of the o eratin member and the anvil pro er of tfie anvi member are at all times re atively angular,

' and that the cutting edge 20 of the blade is.

arranged at such inclinationas to maintain said cutting edge in operation in contact throughout its length with the base of the groove 5 of the anvil member, so that in operation the full extent of said blade is effectblade having a comparatively greater length at its forward edge, thereby providing an extreme point 22 for use in cutting powder or A blade 16is secured to the op one or the other of the membersmay. be

This inclination of the cutting edge has an additional function, in that it provides a,

the like, the position of this point permitting its effective use for the purpose stated without interference from any other portion of the tool.

The respective members of the tool are operated by a relative compression of the handles 4 and 1 1, as will be obvious, and to maintain said members in normally inoperative or open position I secure a leaf spring 23 to the handle 4, withits free end bearing upon the handle 11, it being understood that if desired slightly oflset beyond the pivotal point-to arrange said handles 4 and 11 in alinementforthe effective engagement of the spring.

In use the fuse designed to be s litis iniserted in the channel 7, and the han les 4 and- 11 movedtoward each other so-that the cutting of the blade 16 will be forced longitudinally of and through the fuse and intothe groove 5, said groove being providedtoreceive and protect the edge of the blade and. permit the passage of said edge, Wholly through the fuse. For cutting the, fuse is placed in the alined depressions 8 of the anvil: and the members operated to cause the cutting edge to pass through the fuse. Forcrimping the fuse is placed .in the de ression. 9 in the anvil member and said mem ers 0perated to cause the notch 15 to en age, the fuse and cooperating with the note 9.produce the desired effect. As before stated the point 22 of the blade is serviceable forcutting powder orthe like, while the drill 11 provides an effective medium for boring ahole in the powder stick for the insertion ofithe fuse or the... cap. The blade 16 is secured in place solely by the frictional engagement of the Walls of-the operating head and the pivotpin 21, thus providing for its ready removal when desired for sharpening or renewal;

The tool is of .very, simple construction and may be readily and-cheaply manufactured and in its assembled form provides in asingle article all devices necessary to the miner or blaster in properly carrying out blasting operations in connection with his trade.

Havingthus described the invention what is claimed as new is A tool of the class described comprising pivotally connected members, one of said members being formed with atubular fuse, receiving channel converging toward the pivot of the members, and with a relatively narrow guidewayextending throughout the length of and in open communication withv the channel, a narrow channel. arranged below and in open communication with the fuse channel, the second member having a chanmembers, said blade adapted for movement In testimony whereof, I afix my signature through the fuse channel and into said sech l d in presence of two Witnesses. end-named narrow 0 anne or groove an having a relatively inclined cutting edge cor- LEWIS KRAMER 6 responding in length to the length of the fuse Witnesses:

channel, said blade also formed with a de- JAMES P. VEERKAMP, pression in its lower rear portion. 1 JoRDEN DIXON.

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