dano1917
RIP
The following is taken from "The Literary Digest" October 5th, 1918
A GRENADE-TESTER An exhaustive test of grenades, says Rudolph C. Lang in The American Machinist (New York), must be made before adopting any specific type, and even after one has passed on it is tried from time to time to insure a uniform product. He goes on: "The usual procedure in testing these grenades is first for penetration; secondly, for distribution of fragments, and last, if both the former warrant further investigation, the jolt test. "The figure shows one of the chambers used at the Bethlehem Steel Corporation for testing grenades. It is a steel chamber app. 10 feet square, 15 feet high, with wall 12 inches thick and a square opening on top used as a vent for the gases that have been developed. A narrow door opening from a short passageway leading from the chamber completes the entire structure, which is anchored on a heavy reenforced concrete foundation; covering the entire interior is a layer of heavy coarse wood, over which are placed large sheets of paper. These sheets are renewed after each test, as the following will explain. The reason for all these is to ascertain the true fraction, both as to the number of pieces or slugs as well as their scattering effect. The penetration is then clearly seen in the wooden lining, which also prevents the pieces, or slugs, from rebounding through the paper, on which the scattering effect is clearly shown. When the grenades have thus far proved satisfactory they are submitted to a jolt test, which is nothing more than putting a few of them in a box to which is fastened at one end of a long pole. The examiner then places himself behind a barricade and grasps the other end of the pole which passes through a small aperture of the barricade. He then shakes the box vigorously, subjecting the grenades to a severe jolting not only against the wood, but also against one another. when he has shaken them in this manner about a dozen times they are then passed as safe for delivery. Dano
A GRENADE-TESTER An exhaustive test of grenades, says Rudolph C. Lang in The American Machinist (New York), must be made before adopting any specific type, and even after one has passed on it is tried from time to time to insure a uniform product. He goes on: "The usual procedure in testing these grenades is first for penetration; secondly, for distribution of fragments, and last, if both the former warrant further investigation, the jolt test. "The figure shows one of the chambers used at the Bethlehem Steel Corporation for testing grenades. It is a steel chamber app. 10 feet square, 15 feet high, with wall 12 inches thick and a square opening on top used as a vent for the gases that have been developed. A narrow door opening from a short passageway leading from the chamber completes the entire structure, which is anchored on a heavy reenforced concrete foundation; covering the entire interior is a layer of heavy coarse wood, over which are placed large sheets of paper. These sheets are renewed after each test, as the following will explain. The reason for all these is to ascertain the true fraction, both as to the number of pieces or slugs as well as their scattering effect. The penetration is then clearly seen in the wooden lining, which also prevents the pieces, or slugs, from rebounding through the paper, on which the scattering effect is clearly shown. When the grenades have thus far proved satisfactory they are submitted to a jolt test, which is nothing more than putting a few of them in a box to which is fastened at one end of a long pole. The examiner then places himself behind a barricade and grasps the other end of the pole which passes through a small aperture of the barricade. He then shakes the box vigorously, subjecting the grenades to a severe jolting not only against the wood, but also against one another. when he has shaken them in this manner about a dozen times they are then passed as safe for delivery. Dano
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