The lanyard-mounted torpedo designed by <a href="https://en.wikipedia.org/wiki/William_B._Cushing" class="extiw" title="en:William B. Cushing">en:William B. Cushing</a> that sunk <a href="//commons.wikimedia.org/w/index.php?title=CSS_Albemarle&amp;action=edit&amp;redlink=1" class="new" title="CSS Albemarle (page does not exist)">CSS <i>Albemarle</i></a>. A description of the pieces follows, paraphrased from p. 658 of the PDF:
<p>Fig 1:
A: Long spar
B: Bracket attaching the spar to the boat
<i>e</i>: Halliard for raising and lowering the spar
C: Stanchion for the halliard
D: Windlass for the halliard
<i>g</i>: Pin holding the shell in place
<i>h</i> and <i>i</i>: Lug and inclined plane holding the pin
<i>j</i>: Lanyard pulled to remove the pin
<i>a</i>: Lugs attached to the lanyard so that pulling the lanyard would push the shell out
<i>l</i>: A smaller lanyard leading to the pin, so that the shell would be pushed out first, and then the pin would be pulled out. Spliced to <i>j</i>
</p><p>Fig 2:
X: Air chamber
Z: Powder chamber. The arrangement of these meant the shell would float vertically, point down.
In the shaft is a grape-shot, held in place by:
<i>p</i>: A pin
<i>s</i>: A lanyard attached to the pin, the "trigger-line"
When <i>s</i> was pulled, the pin would come out, the shot would fall on a "nipple", and the torpedo would detonate.
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The spar was held facing the stern of the boat when not in use. When in use, the shell was added, the spar was swung around, and lanyard <i>e</i> was used to set the spar at the right depth. Then lanyard <i>j</i> was pulled, pin <i>g</i> released, and the shell floated free. Finally <i>s</i> was pulled, and the torpedo detonated.
From drawings lent by Commander John R. Bartlett. A list of artists and engravers can be found on p. 21 of the <a rel="nofollow" class="external text" href="http://access.bl.uk/item/pdf/lsidyv2cbc72d0">PDF</a>.
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</p>
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