head sheaves
The sheaves mounted on the blank" >target="_blank" >glossary/blank" >target="_blank" >glossary/head-block/" class="glossaryLink" data-cmtooltip="cad16bb9fee387cf8c390a3c9222688e" blank" >target="_blank" >head-block-2/" class="glossaryLink" data-cmtooltip="a79192e216933aa167caabbf1d52c72a" blank" >target="_blank" >head block of a pile-blank" >target="_blank" >driver. (Bridge, 2019)
