Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Application grantedgrantedCritical
Publication of GB191115153ApublicationCriticalpatent/GB191115153A/en
B25D17/00—Details of, or accessories for, portable power-driven percussive tools
B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Earth Drilling
(AREA)
Percussive Tools And Related Accessories
(AREA)
Abstract
15,153. Ferguson, J., and Rule, E. J. June 28. Percussive drills.-In a chuck for rock drills of the kind having a gripping-pad held in position by a U-bolt, the U-bolt f fits between lugs g so as to prevent longitudinal movement of the gripping-pad e, and the inner end h of the pad is inclined so as to effect the gripping of the tool c as it is forced backwards into the chuck.