The above described methods while not claimed herein are to form the subject-matter of a separate application.
Having described my invention what I claim is:
1. A projectile provided with a chamber extending along its length, the walls of said chamber being provided with longitudinal ribs extending in a spiral direction from the base of the chamber to the forward end thereof.
2. A projectile provided with a chamber extending along its length, the forward end of said chamber being pointed, the walls of said chamber being provided with longitudinal ribs extending in a spiral direction from the base of the chamber to the point thereof.
3. A projectile having the fibers of its material twisted in a spiral direction from the base of said projectile to the end thereof.
4. A projectile having the fibers of its material twisted in a spiral direction from the base of said projectile to the end thereof, said projectile having a central chamber, the walls of which are provided with longitudinal ribs extending in a spiral direction from the base of the chamber to the point thereof.
In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses, this sixth day of December, 1906.
Carlos de Zafra.
Witnesses:
Emilo Belari,
Emma Roderick.
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