Page 256 - Buck Tilton - Outward Bound Ropes, Knots, and Hitches 2 ed.
P. 256
Reach through the loop and grasp the doubled
rope, as shown in the photograph.
As with the double bowline (see page 56), the figure 8
double loop could be used in an emergency as a chair sling
to raise or lower a person if, of course, the loops are made
large enough. When used as a chair sling, both these knots
share the common characteristic of being highly
uncomfortable. This knot was first described in print in 1944
by Clifford Ashley. How long it was in use prior to Ashley’s
description is not known.