DRILL n.
structive kind is Urosalpinx cinerea. Bow drill, Breast drill. See under Bow, Breast. -- Cotter drill, or Traverse drill, a machine tool for drilling slots. -- Diamond drill. See under Diamond. -- Drill jig. See under Jig. -- Drill pin, the pin in a lock which enters the hollow stem of the key. -- Drill sergeant (…
FORELOCK n.
A cotter or split pin, as in a slot in a bolt, to prevent retraction; a linchpin; a pin fastening the cap-square of a gun. Forelock bolt, a bolt retained by a key, gib, or cotter passing through a slot. -- Forelock hook (Rope Making), a winch or whirl by which a bunch of three yarns is twisted into a standard. Knight.…
FOX n.
a walk. -- Fox wedge (Mach. & Carpentry), a wedge for expanding the split end of a bolt, cotter, dowel, tenon, or other piece, to fasten the end in a hole or mortise and prevent withdrawal. The wedge abuts on the bottom of the hole and the piece is driven down upon it. Fastening by fox wedges is called foxtail wedging…
GIB n.
; -- usually held or adjusted by means of a wedge, key, or screw. Gib and key, or Gib and cotter (Steam Engine), the fixed wedge or gib, and the driving wedge,key, or cotter, used for tightening the strap which holds the brasses at the end of a connecting rod.