JerseyHarold Posted July 18, 2013 Report Share Posted July 18, 2013 I've been going through my late father-in-law's tools (he was a master carpenter) and found these things. The markings say 'rawl grip patented'. There is a chisel end for hitting and a drill bit on the opposite end. I don't see how to change bits, or even if that's possible. What are they called and how are they used? Thanks for the help. Harold Quote Link to comment Share on other sites More sharing options...
fourleaf Posted July 18, 2013 Report Share Posted July 18, 2013 (edited) I did a quick internet search for you and found this! http://www.supertopo.com/climbing/thread.php?topic_id=225425&tn=0 Mountain Climbing back in the day maybe Edited July 18, 2013 by fourleaf Quote Link to comment Share on other sites More sharing options...
Frank Elder Posted July 18, 2013 Report Share Posted July 18, 2013 Early cement drills....? Quote Link to comment Share on other sites More sharing options...
Alshere59 Posted July 18, 2013 Report Share Posted July 18, 2013 Early cement drills....? That was my thought as well. Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted July 18, 2013 Report Share Posted July 18, 2013 the original hammer drill....(powered by human effort, speed rated to one ability to sling hammer and accurately hit the anvil) Quote Link to comment Share on other sites More sharing options...
JerseyHarold Posted July 18, 2013 Author Report Share Posted July 18, 2013 So you whack them to drill a hole in concrete or rock? That would explain why the heads are mushroomed and splintered. I'll take a power tool any day. Fourleaf, You did much better than me on a web search. I found next to nothing. Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted July 19, 2013 Report Share Posted July 19, 2013 Early (concrete, mortor, rock) hammer drills powered only by a hammer had a star shaped bit. I have several of these bits from my dads collection Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.