[TheForge] Speaking of hammers

Fri Apr 16 17:12:01 2004

Thanks Bruce:

I might talk to some of the guys building self contained hammers later on in
the design phase. Not surprisingly (for me anyway) I'm looking at a very
different configuration for the hammer itself. The functioning of the thing
though is pretty tried and true over the past century. Also, somebody on
this list tried using a 1/4 turn ball valve on a hammer he was building and
reported it worked just fine, good control but idled with the ram on the
anvil. So I'm not too concerned about making it work, just how many
functions to pack into it.

And, that's why I'm looking for opinions from the guys/gals who use the
things.

Frosty
------------------------
If it ain't forged
it ain't real.
Wrought iron is.
The FrostWorks

Meadow Lakes, AK.

----- Original Message -----
From: "Bruce Freeman" <[email protected]>
To: <[email protected]>
Sent: Friday, April 16, 2004 12:22 PM
Subject: Re: [TheForge] Speaking of hammers

> Frosty,
> I know nothing about power hammers.  I leave that to John Larson, who
> frequents the junkyard and is liberal with his advice.  You might check
> the archives there.
> John builds a number of hammers, and I THINK one is self contained, but
> I'm not certain.  Ironkiss is his trademark, but I don't know whether
> he's on the web yet.
> You know he's a good guy because he recently bought Grasshopper
> plans...
> Bruce
> NJ
>
> >>> [email protected] 4/16/2004 3:31:44 PM >>>
> It's like I'm finally going to get to build a real shop this summer.
> With a
> real shop I'll get to start bootstrapping myself into some equipment.
>
> One of the things on my short list is a self contained power hammer.
> There's
> been a lot of discussion on home built power hammers Kinyon type and
> self
> contained. I've done almost all the drawing borad/screen design work I
> can
> till I find out exactly what I'll have available for rams, anvil, etc.
> then
> I can get specific on the design.
>
> I don't have much hands on power hammer experience so I have an
> operational
> question. From reading through lots of patents and list messages I know
> self
> contained hammers have a few functions other than just beating the snot
> out
> of hot steel.
>
> On another list a poster mentioned his chinese hammer idles with the
> ram on
> the anvil. This tells me the hammer in question has the (or something
> similar to) simplest version of the control valving in the 1903 Massey
> patent, # us707,246.  This is basically a valve in a bypass airway,
> when
> it's open the hammer is idling and the ram rests on the anvil, when
> closed
> the ram cycles.
>
> A simple 1/4 turn ball valve in the bypass airway will produce the
> above
> described action. The addition of a check valve in the control valve
> will
> allow the hammer to idle with the ram off the anvil. Some additional
> internal shaping of the valve and simple changes to the linkage will
> yeld a
> hammer capable of giving dead blows and clamping. A single blow is a
> function of the linkage rather than the valve itself so I'm not
> including
> this function in my question.
>
> Okay, enough of the preface, here's my question. Does anybody using a
> self
> contained power hammer use the clamping or dead blow functions?
>
> Basically I'm rather lazy and don't want to go through the headache of
> milling the multi-function control valve and never use the other
> functions.
> I do like the idea of the ram idling in the up position but if having
> it
> idle on the anvil isn't a problem I might keep it REALLY simple.
>
> Thanks
>
> Frosty
> ------------------------
> If it ain't forged
> it ain't real.
> Wrought iron is.
> The FrostWorks
>
> Meadow Lakes, AK.
>
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