US Patent 7254893 Blade quick removal device for a handsaw

A blade quick removal device includes an arcuate frame integrated with a front handle and a rear handle, a first hook bar under the front handle, an oscillatory second hook bar nearby the rear handle for adjustably retaining the saw blade thereon and a locking member pivoted to the lower end of the second hook bar for fastening the hook bar to a reduced bottom of the rear handle and having an axial rod and a pair of latches respectively held by a hook and a pair of retaining projections on the bottom of the rear handle.