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Author Topic: Howell 6 shot conversion  (Read 400 times)

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Offline Hewy

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Howell 6 shot conversion
« on: July 02, 2019, 11:30:05 AM »
Has anyone got their hands on the new Howell six round 45LC cylinder. ?
How good is it ?
« Last Edit: July 02, 2019, 11:37:11 AM by Hewy »
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Offline Captainkirk

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Re: Howell 6 shot conversion
« Reply #1 on: July 02, 2019, 12:07:16 PM »
???
I thought Taylor's held the patent on the 6 round conversion?
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Offline AntiqueSledMan

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Re: Howell 6 shot conversion
« Reply #2 on: July 02, 2019, 01:13:58 PM »
Taylors holds the patent on the two piece 6 shot cylinder,
Howell's have introduced a 6 shot gated conversion cylinder.

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Offline Omnivore

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Re: Howell 6 shot conversion
« Reply #3 on: July 02, 2019, 03:58:39 PM »
A design patent is good for only 17 years, last I checked.  How long's it been?  I'd have guessed that the patent in question would have covered the idea of the angled chambers, regardless what kind of cylinder they're in anyway.  The invention after all is a way to make the 45 Colt case rim fit into a smaller cylinder than that for which it was originally designed.  To make the claims so specific as to be restricted purely to the two-piece cylinder would be somewhat short-sighted IMO.  Without detailed information then, my guess would be that the patent has expired, and that Howell is simply avoiding direct competition with Taylor's for time being.
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Offline AntiqueSledMan

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Re: Howell 6 shot conversion
« Reply #4 on: July 02, 2019, 05:53:32 PM »
I found it, the original Patent #US006029385, assigned to Kenneth P. Howell Jr.
Filed on June 24, 1998 and granted on Feb 29, 2000.
I don't know the patent laws, but here is a copy of the patent for enjoyment.

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Offline mike116

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Re: Howell 6 shot conversion
« Reply #5 on: July 02, 2019, 06:28:36 PM »
The patent for angled chambers has expired and as of March Howell has been offering 6 shot .45 colt conversion cylinders.  I believe Gary Barnes at www.Cartridgeconversions.com has both Kirst and Howell 6 shot conversion cylinders available. 

I believe Gary has been injured again and is currently unable to do much. 

Offline AntiqueSledMan

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Re: Howell 6 shot conversion
« Reply #6 on: July 03, 2019, 05:47:27 AM »
It looks like the patent had run out years ago, after 14 on a design.

http://intellectualpats.com/how-long-do-patents-last-and-can-they-be-extended/

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Offline mike116

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Re: Howell 6 shot conversion
« Reply #7 on: July 03, 2019, 06:52:16 AM »
I did some checking,   Kirst's patent was on the gated conversion ring.   That patent ran out in February.   The angled chamber patent was earlier and had expired several years ago.   Kirst's patent only prevented others from producing Gated 6 shot conversion cylinders.

Offline Hewy

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Re: Howell 6 shot conversion
« Reply #8 on: July 03, 2019, 08:45:23 AM »
I may have mislead this conversation. The conversion I wanted to know about is the  new 6 round gated cylinder for an 1858 Remington . Howell has a reference to it on his web site that 6 round gated
Is now available for the 1858.
Nice to know about the patent that Howell secured in 2000.
HEWY
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Offline BOOMSTICK BRUCE

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Re: Howell 6 shot conversion
« Reply #9 on: July 03, 2019, 11:46:48 AM »
im using 5 shot kirsts in my ubertis, if kenny makes them in stainless for the uberti, i might have to switch... my loading gates keep popping open when i fire them...
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