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Forums10
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Jul 28th, 2025
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ben-t
Unregistered
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ben-t
Unregistered
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Barrels from another gun. Did you buy it?
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Joined: Jan 2002
Posts: 5,945 Likes: 144
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 5,945 Likes: 144 |
That is a rightious old J. Stevens Arms & Tool Co. double. Up thru Catalogue No. 52 they made doubles using the demi-bloc construction method. They were offered with either "high Pressure Steel", Twist, Damascus or Krupp Fluid Steel tubes screwed into the mono-bloc. By J. Stevens Arms & Tool Co. General Catalogue No. 53 (circa 1911) they had gone to chopper-lump barrel construction.
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ben-t
Unregistered
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ben-t
Unregistered
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I bow to the expertise of Researcher. His knowledge is great and hard earned. He has corrected me before on guns I had not seen examples of and I have never seen a damascus Stevens of this type previously. Please excuse my ignorance.
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Joined: Dec 2001
Posts: 12,743
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 12,743 |
What is the difference here between the "Demi-Block" & a "Mono-Block". Demi generally meaning "Half", so is the breech section of these bbls actually made in two halves, then joined together & the bbls installed similar to a Mono-Block, or is this just different terminology for a Mono-Block??
Miller/TN
I Didn't Say Everything I Said, Yogi Berra
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Joined: Jan 2002
Posts: 5,945 Likes: 144
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 5,945 Likes: 144 |
What J. Stevens Arms & Tool Co. called their demi-bloc system in the tirst decade of the 20th Century is what we think of as mono-bloc today. I'm up in Kodiak for a month, so I'm away from my old catalogues. I already have this page from the J. Stevens Arms & Tool Co. 1912 Shotguns catalogue showing their chopper lump construction in my photobucket file --  It will be several weeks before I can scan in their earlier barrel construction page.
Last edited by Researcher; 07/12/10 12:37 PM.
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Joined: Nov 2005
Posts: 4,598
Sidelock
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Sidelock
Joined: Nov 2005
Posts: 4,598 |
If the barrel and lug are forged as one, that is a chopper lump (demi-bloc). This is a mono-bloc. (Pieper 1881)  http://www.google.com/patents/about?id=QiBMAAAAEBAJ&dq=246195The Stevens catalog above clearly shows a chopper lump. The lump is forged as part of the barrel. Beretta still uses the monobloc. (Beretta 1938 catalog)    Pete
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Joined: Dec 2001
Posts: 12,743
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 12,743 |
I was totally familiar with the terms Mon-Block & Chopperlump. I have seen conflicting info on Demi-Block. Apparently from this thread the term has at various times & by Sundry makers been used for "Both" of the former.
The Stevens in question which was described as a Demi-Block is obviously not a chopperlump, with the steel block & damascus bbls. What I was not certain about was whether or not the block of the "Demi" was actually built in two pieces with a vertical seam through the center or not.
Perhaps Demi-Bloc was just a predecessor to the term Mono-Block.
Do we have any reference to the term Mono-Block prior to its use by Berreta. Although Pieper seems to have originated the concept he seems to have just mostly referred to it as his "Steel Breech Piece".
Miller/TN
I Didn't Say Everything I Said, Yogi Berra
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Joined: Nov 2005
Posts: 4,598
Sidelock
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Sidelock
Joined: Nov 2005
Posts: 4,598 |
Miller,
Demi-Bloc appears in the 1921 Pieper catalog on the 300 series Bayard hammer guns.
Pete
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