[TheForge] Conestoga wagon jack

[Peter Fels & Phoebe Palmer]

Sorry, it's spring and i couldn't help it.

wmullett at bright.net wrote:
> No - I don't see how it could have been used for something like that.  The hole is through the side in the wood.
> 
> In Plummer's book, they show 5 different jacks and none seem to have a spring like you describe.
> 
> ---- Original message ----
>> Date: Mon, 23 Mar 2009 14:12:07 -0700
>> From: theforge-bounces at mailman.qth.net (on behalf of Peter Fels & Phoebe Palmer <artgawk at thegrid.net>)
>> Subject: Re: [TheForge] Conestoga wagon jack  
>> To: Blacksmithing List Sponsored by ABANA <theforge at mailman.qth.net>
>>
>> Walt...was the hole used to anchor a wound spring? Common on later 
>> mechanical jacks..pf
>>
>> wmullett at bright.net wrote:
>>> I've been given the opportunity to make a new ratchet gear for a Conestoga wagon jack.  The owner has two - the one with the missing ratchet is dated 1787 and the other one he gave me to use as a pattern is dated 1819.
>>>
>>> The 1819 one has a 1/8" hole on the gear side - not sure why - but through that I was able to determine the gearing.  The crank has a 4 tooth gear engaging another gear that lays just beneath the face plate and it has 18 teeth.  On the same shaft, is a gear with 3 teeth that engages the rack.  Thus the mechanical advantage is 6 to 1.
>>>
>>> Looking at these two and the 5 shown in Plummer's "Sorber Collection", I wonder if the gears were bought?  None of the shafts run front to back so there has to be a separate box inside.  
>>>
>>> Does anyone on-line know any more about these?
>>>
>>> Walt - Ohio  
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