\version "2.13.7"

\new PianoStaff <<
\new Staff \relative c'' {
a g f e f g a b c a \override Hairpin #'hairpinToBarline = ##f b\> g a\! c b g a c a
}
\new Staff \relative c{
	\clef bass
a g f e f g a b c a b g a c b g a c a
}
>>