Fig. 83
Fig. 84
Fig. 85
Stone Clips and Slings.—The clips ([fig. 83]) are useful for lifting stone slabs. The hook rings slide along the chain, and the clips are therefore adjustable to any stone not exceeding in width half the total length of the chain.
The chain slings have a ring at one end and a hook at the other, and are useful for a similar purpose; but the manner of slinging depends upon the thickness of the stone. For instance [fig. 84], known as jack slinging, answers well with a slab, say, of over 6 inches in depth, but a thinner slab lifted in this way would be liable to break in the middle. If, however, the chain were placed as [fig. 85], and which is known as figure-eight slinging, this risk would be removed.
Stone Lewises.—Lewises may be divided into two classes, curved and straight-sided.