Cotter drills, Slotting drills, or keyway drills, three names designating the same tool, are employed to cut out keyways, mortises, or slots.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose
1800 represents a Slotting machine, and Fig.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose
1802 represents a Slotting machine in which the guideway for the Slotting bar or ram is fixed in position, and the feed motions are entirely on the outside of the machine.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose