The following text was automatically extracted from the image on this page using optical character recognition software:
899,208 . in conination with a rotary drilling seats corresponding to the key seat in the machine,. and a drill stem clam) mounted sleeve, and a key engaging said key seats. 10 thereon having shafts secured thereto, ex- in testimony whereof I hereto affix my terifrly threaded sleeves .mounted on said signature in the presence of two witnesses. 5 shafts extending substantially the full length IIARR Y R. DECKER. thereof, each of said sleeves having a longi- Witnesses: tudinal key seat therein, threaded rings JARE H. Sxi, mounted on said sleeves and having key j E. E. GORnoN.