|
The Catapult
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.
H. The loop which is hitched over the iron pin at the top of the arm
when the stone is in position in the sling, as shown at A and B, fig. 2,
p.13.]
Fig 3. - Catapult (With a Sling.) Surface view of
the frame and mechanism. Scale 1/2 in. = 1 ft.
The arm EE is here shown wound down to its full extent.
(Compare with B, fig. 2, p.13.)
I.
II. |
I.
II. |
} |
The side-pieces |
| III. |
IV. |
|
The large cross-pieces |
|
V. |
|
The small cross-piece |
The ends of the cross-piece beams are stepped into the
side-pieces. |
