(57) In a tackle comprising tackle blocks (10, 11) with sheaves or pulleys (12,13) and
a tackle fall (15) passed over the pulleys, both end portions (16, 17) of the fall
are releasably fastened to one (10) of the tackle blocks by means of a locking device
(23). This means that the user may operate the tackle either by pulling one of the
tackle end portions and thereby obtain a mechanical advantage which is normal for
a tackle of that type, or pull both of the tackle end portions (16, 17) simultaneously,
and thereby obtain a mechanical advantage which is only half of that normally obtained.
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