US1290086A - Blasting-gun. - Google Patents

Description

W. H. CHERRY.

BLASHNG GUN.

APPLICATION FILED MAR- 5. l9l8.

Patented J an. 7, 1919.

INVENTOR M272 0; 5. mar/y WITNESSES ATTORNEY AENT onnon.

BLASTING-GUN.

Application filed March 5, 1918.

T0 aZZ whom it may concern:

Be it known that I, WILLIAM H. CHERRY, a citizen of the United States, residing at 'Shipman, in the county of Macoupin and State of Illinois, have invented certain new and useful Improvements in Blasting-Guns, of which the following is a specification.

This invention relates to a blasting gun and has for its primary object to provide a simple, inexpensive and convenient means for placing a charge of explosive material beneath tree stumps and boulders when the latter are to be removed from the ground, and after properly placing the device below the object to be removed, to discharge the explosive by a suitably placed cap acted on by a hammer which latteris controlled by means extending a suitable distance from the explosive.

With the above as the principal object in view, the invention consists in the novel construction, combination and arrangement of parts hereinafter described, pointed out in the appended claim and illustrated in the accompanying drawings, in which,

Figure 1 is a side elevation of the improved blasting gun complete,

Fig. 2 is a cross sectional view of the same on the line 22 of Fig. 1, and,

Fig. 8 is a longitudinal sectional view on an enlarged scale of the lower end of the gun in which the explosive is placed and also showing the means for causing the explosion.

In the drawings, 10 indicates a cylinder of such length and diameter as circumstances require, said cylinder being closed at one end by a plug 11 threaded thereinto and at the opposite end by a cap 12 having a flange or skirt threaded on the cylinder, the cap having an opening in the center to receive the threaded end of a tubular rOd or stem 13 which is made of indefinite length and by means of which the device is manipulated. The cylinder 10 is made of metal as well as the cap 12, both being sufficiently thick to withstand the explosion. The plug 11, however, may be less able to Withstand the explosion, as by being made of a weaker material as paper, or by being screwed into the cylinder only slightly. Within the cylinder 10 at the end covered by the cap 12 is a small chamber 14 secured in any suitable manner to the walls of the cylinder, as by spider arms 15, and extending a short distance into Specification of Letters Patent.

Patented Jan. 7, 1919.

Serial No. 220,527.

the cylinder. The outer end of the chamber is covered by the closure 12. The inner end 16 of the chamber is provided with a seat or anvil 17 for a fuse cap 18 which latter is exploded by a firing pin or hammer 19 contained within the chamber 14 adapted to engage the fuse cap 18, said pin being formed with a collar 20 against which one end of a coil spring 21 is adapted to bear, the opposite end of the spring resting upon the cap 12 or the end of the tubular stem 13. Extending from the cap 12 to the opposite end of the stem 13 is a rod or wire 22 by means of which the pin 19 is retracted and the spring placed under compression so that when released the pin will strike the cap 18 with suflicient force to cause the cap to explode. The terminal end of the rod or wire 22 projects through the end of the stem 13 and is there turned into an eye 23 for convenient manipulation when the pin is to be retracted.

When desired, the outer end of the stem 13 may be supported by a bracket 21 which, as shown, is in the form of a yoke having a series-of perforations 25 formed through the arms thereof to receive a pin or bolt 26 whichpasses through such perforations 25 as desired and through one of a series of perforations 27 in the stem 13. The yoke 24:-

is bolted to an angular support 28 by means of which it is held rigid and enables the bracket to support the cylinder in a proper position below the stump or boulder to be destroyed.

In using this gun, the proper quantity of an explosive material, such as dynamite, is placed within the cylinder and the closures screwed in place thereon after placing a cap on the anvil 17. The cylinder 10 thus loaded, is placed below the object to be destroyed and the stem 13 extended outwardly therefrom and to such a distance that a person may operate the rod or wire 22 to retract the firing pin and release it, thus causing the same to explode first the cap and then the contents of the cylinder with perfect safety to himself.

Having described my invention, I claim:

A blasting gun comprising a cylinder adapted to contain an explosive charge, a weak plug in one end of the cylinder a cap removably closing the other end of the cylinder, a spider within the cylinder next to said cap, a chamber carried by the spider, an

g V 1,290,086 W anvilat the inner end of said chamben'for handle; the Whole for use substantially as receiving a detonating Cap, a 'tubu1a'n stem described. opening through the center of said closure In testimony whereof I affix my signature cap opposite the chamber, a firing pin and a; inpresence of two Witnesses;

rod. extending from it through said stem, :1 WILLIAM H. CHERRY. collar on" the .pin, and an expansive spring Witnesses r surrounding the pin between-isaidxcoliar and RGBT. MGQORMICK.

stem, the outer end. of the rod having'a JAMES READER.

Copies of this patent may, be obtained for fa m cents eagch by address ing tlie-fCBininis31oner' oi Patents.

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