drill plate

A breast-plate for a hand-drill. drill-plow, s. A plow for sowing grain in drills. drill-pre , s. 1. A drilling-machine in which a screw is made to feed the drill to its work. It has feet for bench work, and a sling-chain and adjustable sockets when used for tapping pipes. 2. A drilling-machine of large size. [DRILLING MACHINE, BORING-MACHINE.] drill-rod, 8. The long rod, made of sections coupled together, which reaches to the surface of the ground and carries the well-boring tool on its lower end. Drill-rod grab : A clutching-tool lowered into a hole to engage with and form a means of withdrawing a drill-rod whose upper portion has been broken off or become detached. IMG:content-0533.png:[blocks in formation] 2. Fabric : The same as DRILL. 8. II. 3. 3. Milit ., Naval , & c.: The teaching or practice of military or naval exercises, movements, .; drill. "Still recruits came in by hundreds. Arming and drilling went on all day."- Macaulay : Hist . Eng ., ch. v. drilling-jig, s . A portable drilling-machine which may be dogged to the work, or so handled as to be readily presented to it and worked by hand. drilling-lathe, s . A drilling-machine on horizontal ways or shears, thus resembling a lathe. [DRILL ING-MACHINE.]