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Redsetter
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Re: Scope mounts I.D. ?
Sep 17th, 2017 at 9:13am
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Unknown to me, but resembles the earliest type of screw-on Stevens mounts, before Stevens came up with dovetail blocks c. 1904.  The wide flange (or rather screw head!) abutting the tube was another Stevens idea, except to work as intended Stevens flanges were separate pieces loose in the thimble that didn't rotate as the thimble was turned.   

Stevens mounts were an improvement of mounts John Sidle began making about 1890, but they weren't illustrated in any Sidle catalog I've seen, so I wouldn't know how to identify them for sure except by finding them on a Sidle scope.
  
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marlinguy
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Re: Scope mounts I.D. ?
Reply #1 - Sep 17th, 2017 at 11:19am
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Interesting mounts! I see a cut in the front ring for a rib, which I don't think Stevens or Sidle used in early scopes? I suppose it could a modification, but if original it's not something I have seen.
  

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Redsetter
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Re: Scope mounts I.D. ?
Reply #2 - Sep 17th, 2017 at 1:47pm
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marlinguy wrote on Sep 17th, 2017 at 11:19am:
Interesting mounts! I see a cut in the front ring for a rib, which I don't think Stevens or Sidle used in early scopes? I suppose it could a modification, but if original it's not something I have seen.


The Stevens Special scope (highest priced model in their 1903 catalog) included a rib, though on everything else the V-notch was used, as it had been previously by Sidle.   

They look well-made, although one thing I don't like about these "unknowns" is the lack of a screw to remove the spring & plunger from the outside when inserting the tube through the rings, which is the easier way to do it.
  
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rgchristensen
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Re: Scope mounts I.D. ?
Reply #3 - Sep 17th, 2017 at 6:45pm
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Redsetter wrote on Sep 17th, 2017 at 1:47pm:
[quote author=0C00130D080F061418610 link=1505631835/2#2 date=1505661563] 

They look well-made, although one thing I don't like about these "unknowns" is the lack of a screw to remove the spring & plunger from the outside when inserting the tube through the rings, which is the easier way to do it.


    How would you drill the hole for the spring and plunger, in the shown configuration?

CHRIS
RGChristensen
  
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marlinguy
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Re: Scope mounts I.D. ?
Reply #4 - Sep 17th, 2017 at 6:52pm
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Redsetter wrote on Sep 17th, 2017 at 1:47pm:
marlinguy wrote on Sep 17th, 2017 at 11:19am:
Interesting mounts! I see a cut in the front ring for a rib, which I don't think Stevens or Sidle used in early scopes? I suppose it could a modification, but if original it's not something I have seen.


The Stevens Special scope (highest priced model in their 1903 catalog) included a rib, though on everything else the V-notch was used, as it had been previously by Sidle.  

They look well-made, although one thing I don't like about these "unknowns" is the lack of a screw to remove the spring & plunger from the outside when inserting the tube through the rings, which is the easier way to do it.


But wasn't the Stevens Special a later scope, and didn't it have the outside screw for the plunger you described?
  

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Redsetter
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Re: Scope mounts I.D. ?
Reply #5 - Sep 17th, 2017 at 7:31pm
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marlinguy wrote on Sep 17th, 2017 at 6:52pm:
But wasn't the Stevens Special a later scope, and didn't it have the outside screw for the plunger you described?


It was among Steven's initial selection of scopes, assuming it really could be ordered.  But Stevens sure didn't sell many--I've seen only one on (you guessed it) one of Quinlan's fabulous Stevens.  Yes, that outside screw was standard on all Stevens 3-point mounts, but the detachable thimble flanges came along quite a bit later.
  
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