130 TRANSACTIONS OF THE 



under the table. If the lower one breaks, the saw is drawn up 

 by the spring above the table, and receives no other injury. 



[^i silver medal awarded. 



McNish & Butler's Stave Machine. 



McNish & Butler, Lowell, Mass. 



This machine is capable of dressing and jointing staves of any 

 size, from the smallest to the largest that are used, by an ingenious 

 arrangement of its parts, which admits of their read}' adjustment. 

 We will endeavor to descri])e them, so tliat they can be understood 

 by parties acquainted with the subject. 



The faces of the stave are dressed by revolving cutters, the 

 outer one of a concave and the inner one of a convex form of arcs, 

 suited to the diameter of tlie cask or barrel to be made, which are 

 adjusted to any desired thickness, and which are driven at a high 



