Blasting machine
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/db/BGML_-_Z%C3%BCndmaschinen.jpg/220px-BGML_-_Z%C3%BCndmaschinen.jpg)
A blasting machine or shot exploder (commonly called a plunger[.
The use of the term "machine" dates from early designs that used an
History
The first satisfactory magnetic induction blasting machine was constructed in 1878 by Henry Julius Smith of Mountain View, New Jersey.[1][2][3][4] Its mechanism consisted of a T-handle that was pushed down; the lower end of the handle was a rack that drove a pinion, which in turn drove a high-voltage magneto, which generated the high voltage that is required to detonate the blasting cap.
Design
A typical "capacitive discharge" blasting machine works by charging a
In popular culture
Despite the older "T-Handle" design no longer being used, this design of blasting machine is most closely associated with
References
- ^ Smith, H. Julius, "Improvement in magneto-electric machines", U.S. Patent no. 201,296 (January 17, 1878)
- ^ Smith, H. Julius, "Dynamo-electric igniting machine", U.S. Patent no. 353,827 (December 7, 1886)
- ^ Smith, Henry Julius, "Art of blasting", U.S. Patent no. 534,289 (February 19, 1895)
- ^ Krehl, Peter O. K., History of Shock Waves, Explosions and Impact: A Chronological and Biographical Reference (Berlin, Germany: Springer, 2009), p. 365.
- ^ "Buzz Box: BB-30 Blasting Machine" Archived June 23, 2012, at the Wayback Machine, Blasters Tool & Supply Company, accessed 2012-07-09
External links
![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
- Inside an Arbra dynamite exploder on YouTube