Help with a Dienelt & Eisennardt 50 lb power hammer (pics)

DanGraves

DanGraves

Knifemaker / Craftsman / Service Provider
Joined
Mar 5, 2006
Messages
2,697
I have this power hammer and can find no info on the internet. This monster weighs in at 3,800 lbs. The problem is I need to hook up a 5 hp motor to it that is 1725 rpm and I dont know the size of pulley for the motor to get whatever rpm this should call for. Also should I build a cage to cover the springs in case of failure (red ones)? Any info or help would be appreciated. Here are some pics.



 
Thats a cool calculator and will come in use when I can find the speed I need. Thanks.
 
Well a little giant 50 lb power hammer runs at 375 rpm,
I'm not sure all 50lb power hammers run at the same speed though.
 
4freek, I think this one may be close to that but not sure as a little giant hits really fast.
 
Nice looking hammer, it looks like this was driven from an overhead shaft and a flat belt. Are you going to convert it to V-Belts?
 
Thanks Salem and John. John, is there an advantage to converting it to v-belts?
 
That hammer looks like it could run pretty fast. What is that patent number on it?
 
Ron, I will get the patent # and post it after work.
 
For me, the advantage of using v-belts on my LG 50 was simply the easy availability of v-belts and pulleys.
I used a 1725 rpm motor, and still barely was able to find a small enough 2-groove pulley for the motor shaft, to get 350 rpm on the 12" hammer pulley. You might be able to better use a flat belt if going for lower speeds than that.

One more thing, if you have to shop online for pulleys and belts etc., I'd advise checking at surpluscenter.com first- they may not have it but if they do it's usually quite a bit cheaper. I found out I paid $40ish at Grainger for a pulley I could have gotten for like $14 at Surpluscenter...
 
That hammer is specifically mentioned Modern Mechanism

Page 437 pf the document linked. Nothing on the rotation speed, it just says "very fast" if desired. (Vintage Machinery has it online as well)
 
d&e.jpg

325 RPM, I hope that helps. Exert from "Coal Age" page 606 Volume VII, January 1915, Hill Publishing.
 
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Ron-m80, That is great info. I now can do the math and I can make the pulley myself if need be. I have a lathe and access to a broaching mill. Ron, I found the page you mentioned and what a gift that info is. I cant thank you enough. Guys, thanks.
 
If your making the pulley yourself, stick with the flat belt. When this machine was made, there may have been 50 or 100 of them driven off of the same drive shaft. The operator had a tension roll that would apply tension to the belt and drive the machine. When the tension roll was released, the belt would go slack and idle around the clutch without driving it; now the operator could change the tooling without interrupting the rest of the machines.

Keep us informed.
 
My pleasure sir. A small contribution compared to whats contained on Bladeforums overall.

-ron
 
John, Ron and Salem, you guys are a big part of why this forum is so good. Will post pics when I get it running. Thanks all.
 
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