The wording wasn't the most elegant but the meaning was clear

"It's appropriate, and I've said this in the past, I think for the Fed to gradually and cautiously increase our overnight interest rate over time and probably in the coming months, such a move would be appropriate," Yellen said on Friday.

Other key quotes:

"The economy is continuing to improve."

"We saw weak growth in the first quarter of the year, and relatively weak growth at the end of last year," she said. "The growth looks to be picking up from the various data that we monitor."

"If we were to raise interest rates too steeply and we were to trigger a downturn or contribute to a downturn, we have limited scope for responding, and it is an important reason for caution."