In actions at law grounded on any simple contract, no acknowledgment or promise by words only shall be deemed sufficient evidence of a new or continuing contract, so as to take any case out of the operation of this chapter, or to deprive any person of the benefit thereof, unless such acknowledgment or promise shall be made or continued by or in some writing to be signed by the party chargeable thereby. Where there shall be 2 or more joint contractors or executors or administrators of any contractor