You're thinking of
the moving ASSEMBLY line.
The Big Bang Theory Season 2, Episode 18
All right, we begin initial ASSEMBLY and
deployment of the testing equipment...
The Big Bang Theory Season 2, Episode 23
The ASSEMBLY line, of course.
The Big Bang Theory Season 2, Episode 18
Kevan, command
the drummers beat ASSEMBLY.
Game of Thrones Season 1, Episode 8
...the moving ASSEMBLY line, that was
introduced by Henry Ford in 1908.
The Big Bang Theory Season 2, Episode 18