A summary of the history, construction and effects in warfare of the projectile-throwing engines of the ancients, with a treatise on the structure, power and management of Turkish and other Oriental bows of mediæval and later times

by Sir Ralph Payne-Gallwey

[Fig. 7].—Catapult (with a sling), see opposite page.

A. The arm at rest, ready to be wound down by the rope attached to it and also to the wooden roller of the windlass. The stone may be seen in the sling.

The upper end of the pulley rope is hitched by a metal slip-hook ([fig. 6], p. 12) to a ring-bolt secured to the arm just below the sling.

B. The position of the arm when fully wound down by means of the windlass and rope. See also EE, [fig. 8], page 16.

C. The position of the arm at the moment the stone D leaves the sling, which it does at an angle of about 45 degrees.

E. By pulling the cord E the arm B is at once released from the slip-hook and, taking an upward sweep of 90 degrees, returns to its original position at A.

The Sling (open).

[F. Its fixed end which passes through a hole near the top of the arm.

G. The leather pocket for the stone.