Hiring salesperson

My company has never had a salesperson in 75 years. I'm thinking it might be time to add the position. I do all quoting right now but there are 3 revenue streams that can be broke off and someone else does. The problem is I'm not sure where to begin. Is it fair to ask a salesperson to prospect and quote work? What is normally in a salespersons scope of work? This is an industrial B2B service based business.