heading machine
/ˈhɛdɪŋ məˌʃiːn/noun
1 Manufacturing Technology. A machine for forming the heads on various small metal parts, especially on fastenings such as nails and rivets.
2 Agriculture = header. Now historical.
3 Mining. A machine used to drive horizontal tunnels.
Origin
Late 18th century; earliest use found in Thomas Jefferson (1743–1826), revolutionary politician and president of the United States of America. From heading + machine.