S |
M |
T |
W |
T |
F |
S |
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
|
|
|
|
|
Forums10
Topics38,443
Posts544,794
Members14,405
|
Most Online1,258 Mar 29th, 2024
|
|
|
Joined: May 2011
Posts: 1,071
Sidelock
|
OP
Sidelock
Joined: May 2011
Posts: 1,071 |
|
|
|
|
Joined: Oct 2009
Posts: 6,482 Likes: 390
Sidelock
|
Sidelock
Joined: Oct 2009
Posts: 6,482 Likes: 390 |
LOL, Brian, do you ever see a gun you don't buy? Hahaha.
Looks interesting. Will be following this.
The world cries out for such: he is needed & needed badly- the man who can carry a message to Garcia
|
|
|
|
Joined: May 2011
Posts: 1,071
Sidelock
|
OP
Sidelock
Joined: May 2011
Posts: 1,071 |
LOL, Brian, do you ever see a gun you don't buy? Hahaha.
Looks interesting. Will be following this. Nah. I got rid of a bunch of guns so I gotta replace some of them!
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
Reheinische Metallwaren und Maschinenfabrik / Rheinmetall-Borsig was founded by Heinrich Ehrhardt in 1899 and that was in Düsseldorf.
A similar concern was founded in Sömmerda in 1901, which was a specialist for tubes and probably the source for the Rheimetall trademarked tubes.
Is there a worn mark near the script L on the lower rib? I have seen a similar script L on many of Sauer's offerings. More than likely a Langenhan mechanic.
It passed thru the Zella - Mehlis proof facility in September of 1921 being Nr. 535 for the month of September.
Cheers,
Raimey rse
|
|
|
|
Joined: May 2011
Posts: 1,071
Sidelock
|
OP
Sidelock
Joined: May 2011
Posts: 1,071 |
So it's older than I thought. I can't really make out other marks but I included another pic of the bottom of the barrels. What is EHRHARDT LAUF?
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
Heinrich Ehrhardt had a vessel type patent where he like Whitworth made tubes. All the tube with the encircled square were made by this technique. I think they supplied a lot of tubes to the German War Machine.
Cheers,
Raimey rse
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
Looks to be a very nice A&D Body Action platform. Anything on the buttplate?
Cheers,
Raimey rse
|
|
|
|
Joined: May 2011
Posts: 1,071
Sidelock
|
OP
Sidelock
Joined: May 2011
Posts: 1,071 |
Nothing on the buttplate.
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
>>Heinrich August Theodor Ehrhardt was born in 1840 to simple beginnings, and retired & expired(1928), in Zella Saint Blasii where in 1866 he founded his first firm which faltered. It was then that he moved to Düsseldorf where he founded the Rhinish Metal Works Rheinmetall and made many wares including corkscrews. He real 1st success was a new technique of bullet making where he fabricated 8x57I steel jacked bullets for the M88. He then went on to bigger and better bullets, and tubes, for artillery pieces in the last decade of the 19th Century. It was then that he developed his tube making process and it has been pointed out to me that the square bolt/rod in the round hole, which can be seen in the diagram between the signatures in the signature block, became his trademark. Page 5 beside "a" & "b": http://www.google.com/patents?id=S2x2AAA...;q=&f=false << US495245A https://patents.google.com/patent/US495245https://www.doublegunshop.com/forums/ubb...true#Post184388This example is stamped Rheinmetall Abteilung Sömmerda. Cheers, Raimey rse
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
>>In 1840, Johann Nikolaus von Dreyse invented the needle gun and a firearms factory was founded in the town. In 1919 the Rheinmetall company took over the factory, later called Rheinmetall-Borsig, at first to produce automotive parts. Initially it concentrated with only little success on carburettors, then in 1925 an ambitious new manager, the engineer Fritz Faudi, took over and a new type of cardan joint was developed, which became extremely popular. The Rheinmetall-Faudi system was a well-known name, and the Sömmerda works were the largest producer in Germany.
In April 1921 the factory returned to arms production, going against the post-war regulations which banned it from producing fuses. From October 1922 the factory produced the total quantity of fuses allowed in Germany by the Allies and also began producing the new MG30 machine gun under the direction of Louis Schmeisser.<<
https://en.wikipedia.org/wiki/S%C3%B6mmerda - copy & paste
Cheers,
Raimey rse
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
Too Immanuel Meffert seemed to be a big fan of Rheinmetall vessels as many of their offerings are fitted w/ Ehrhardt Lauf. Maybe there was a link there directly or thru Römerwerk / Römer & Compagnie / Röhmer und Compagnie: http://www.germanhuntingguns.com/archives/romerwerk-the-becker-revolving-shotgun/I can't say there was a link but I am mining heavily in that direction. Cheers, Raimey rse
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
Too Meffert had some novel tube advancement referred to as >>Radialstahlläufe<< and for the moment I am not sure if that meant feature of tube making?
Cheers,
Raimey rse
|
|
|
|
Joined: May 2011
Posts: 1,071
Sidelock
|
OP
Sidelock
Joined: May 2011
Posts: 1,071 |
Thanks Raimey. Lots of interesting information. The tube set on my gun still ring nice and clear. Fairly light as well.
|
|
|
|
Joined: Jan 2009
Posts: 385 Likes: 10
Sidelock
|
Sidelock
Joined: Jan 2009
Posts: 385 Likes: 10 |
Possibly rotary or spin casting. I have done it with bronze but not steel. Should possible Too Meffert had some novel tube advancement referred to as >>Radialstahlläufe<< and for the moment I am not sure if that meant feature of tube making?
Cheers,
Raimey rse
Dumb, but learning...Prof Em, BSc(ME), CAE (FYI)
|
|
|
|
Joined: Nov 2016
Posts: 75
Sidelock
|
Sidelock
Joined: Nov 2016
Posts: 75 |
Neat looking gun. Looks a lot like my 1934 Sauer.
|
|
|
|
Joined: May 2011
Posts: 1,071
Sidelock
|
OP
Sidelock
Joined: May 2011
Posts: 1,071 |
Had it out this afternoon and tried it out. Functioned perfectly!
|
|
|
|
Joined: Oct 2009
Posts: 6,482 Likes: 390
Sidelock
|
Sidelock
Joined: Oct 2009
Posts: 6,482 Likes: 390 |
Good to hear Brian. Hope it works well for you in the fall. Trying to arrange to spend a few days at Delta this year. We’ll see.
The world cries out for such: he is needed & needed badly- the man who can carry a message to Garcia
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
Thanks to Wolfgang's efforts, we now know Ehrhardt concern rolled out 7k-8k barrels a month. Ehrhardt's process was in fact that of one making tubes by a radial process or „Radialstahlläufe".
Cheers,
Raimey rse
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
So when the term „Radialstahlläufe", the process by which Ehrhardt made tubes, 7k to 8k per month, is associated with Meffert, it actually points indirectly to Ehrhardt. I have seen more Ehrhardt tubes on Meffert offerings that any other.
Cheers,
Raimey rse
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
And yet again Wolfgang comes up w/ another fantastic find:
Alleinige Verwertung Der Gewehrlauf-Marke R.O.M.(Where the O is the Ehrhardt Trademark) Radial-Stahl-Rohr-Extra Qual (Patent Ehrhardt)
Verbiage from a Postkard from 1913.
Which notes that Meffert is the Sole outlet for Ehrhardt patented steel tubes.
Cheers,
Raimey rse
|
|
|
|
Joined: May 2011
Posts: 1,071
Sidelock
|
OP
Sidelock
Joined: May 2011
Posts: 1,071 |
Interesting process on tube making and the connection to Meffert. That was a fair amount of tubes being rolled out.
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
Yes, those were all rifle & shotgun tubes. They made many other like heavy mortar & I'm sure tank barrels. But the sporting arm barrels were noted as being much stronger than the wound or coiled damascus barrels/pattern welded tubes.
Cheers,
Raimey rse
|
|
|
|
Joined: May 2011
Posts: 1,071
Sidelock
|
OP
Sidelock
Joined: May 2011
Posts: 1,071 |
Yes, I could see that if I am correct in thinking that the radial process involved forming the tubes under hydraulic pressure?
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
Below is a forced translation:
>>....the Ehrhardt pressing process using special steel is particularly suitable for the manufacture of hunting and military rifle barrels. After the ingot is pierced, the barrels are given several passes, pass through a conical rolling mill and are ground to exact calibre. In the conical rolling mill, the cylindrical barrels are not only given a tapering shape, but the shell material is also spiralled along its longitudinal axis......<<
Cheers,
Raimey rse
|
|
|
|
Joined: May 2011
Posts: 1,071
Sidelock
|
OP
Sidelock
Joined: May 2011
Posts: 1,071 |
Ah, that explains the process more clearly. Thanks.
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
Not sure that the method is fully clear, but it points in a general direction.
>>In Deutschland wurde eine ähnliche Art der Rohrerzeugung zuerst im Jahre 1892 von der Rheinischen Metallwaren- und Maschinenfabrik in Düsseldorf ausgeführt, nachdem der Hauptinhaber dieser Firma (Geheimer Baurat Heinr. Ehrhardt, ein auch sonst in der Rohrfabrikation mit hervorragenden Verbesserungen und Erfindungen hervorgetretener Geist, den Oberingenieur und Betriebsleiter Green der vorgenannten Spiral Weld Tube Company in East Orange nach Europa geholt hatte und dieser mit dem deutschen Ingenieur Leybold eine Neu- konstruktion der bekannten amerikanischen Maschine vorgenommen hatte, deren Ausführung die Maschinen- fabrik Heinr. Ehrhardt in Zella übernahm. <<
A bit of German for those few who have command & are following along. Interesting that it mentions a >>Spiral Weld Tube Company<<??
>>Weitere Einrichtungen und ArbeitsvorschlSge zur Erzeugung von spiralgeschwei£ten Rohren sind in Deutschland noch von Julius Wttstenhöfer (D. R. P. Nr. 51069, 53532, 58163 usw.), Carl Kratz und Julius Straßmann (D. R. P. Nr. 63307) sowie von Eduard Zimmermann (D. R. P. Nr. 65088) gemacht worden. <<
Some advancements in Spiral Tube technology by Germans......
Cheers,
Raimey rse
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
A re-post with a bit more info:
Alleinige Verwertung Der Gewehrlauf-Marke R.O.M.(Rheinischen Metallwaren- und Maschinenfabrik) Radial-Stahl-Rohr-Extra Qual (Patent Ehrhardt)
Cheers,
Raimey rse
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
A bit more general info:
>>Ehrhardt'sches Preß- und Ziehverfahren:
128 Patente wurden von ihm im Deutschen Reich registriert. Die 1891 patentierten Verfahren, die unter dem „Ehrhardt'schen Preß- und Ziehverfahren“ zur Fabrikation nahtloser Rohre bekannt wurden, werden heute noch in der Industrie angewendet. Bekannt machte ihn auch die Entwicklung des Rohrrücklaufgeschützes. Die 7,5-cm-Ehrhardt Modell 04 Gebirgskanone, an deren Entwicklung und Produktion er maßgeblich beteiligt war, wurde nach ihm benannt.<<
By 1903, due to conflicts & disagreements with shareholders the adept inventor withdrew from some or all parts of his individual businesses.
Cheers,
Raimey rse
|
|
|
|
Joined: May 2011
Posts: 1,071
Sidelock
|
OP
Sidelock
Joined: May 2011
Posts: 1,071 |
I hit the translate site, lol. Interesting info on the tubes. Ehrhardt had quite a number of patents.
|
|
|
|
Joined: May 2011
Posts: 1,071
Sidelock
|
OP
Sidelock
Joined: May 2011
Posts: 1,071 |
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
Glad to get a little of the Ehrhardt Lauf sand sorted. The idea began in the U.S. of A. @ the Sprial Weld Tube Company in East Orange near New York. They derived their idea from pattern welded tube technology( der Flintenläufe, der Damastläufe ). Then Ehrhardt imported the idea / technology to Zella Sankt Blasii & improved it.
>>......Die Fabrikation der gewundenen sogen. spiralgeschweissten Rohre hat ihre Anregung in der Anfertigung der Flintenläufe, der Damastläufe erhalten, welche aus Schweisseisen- und Puddelstahldraht gewunden, in Holzkohlenfeuer zur Schweisshitze gebracht und über einem Dorn durch einen Rohrhammer, einen schnellgehenden Schwanzhammer geschweisst wurden. Vom Jahre 1877 bis 1878 baute Roob eine Maschine, welche 1886 in Betrieb kam, ohne befriedigende Ergebnisse zu liefern. 1886 wurde in East Orange bei New-York von der Spiral-Weld-Tube Co. ein grösseres Werk zur Fabrikation spiralgeschweisster Rohre nach Roob's Verfahren angelegt.......<<
Cheers,
Raimey rse
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
Clarification II:
Alleinige Verwertung Der Gewehrlauf-Marke R.OM.-(Radialstahlläufe - >>Trademark<< Meffert) Radial-Stahl-Rohr-Extra Qual (Patent Ehrhardt)
Cheers,
Raimey rse
|
|
|
|
Joined: Aug 2007
Posts: 10,774 Likes: 183
Sidelock
|
Sidelock
Joined: Aug 2007
Posts: 10,774 Likes: 183 |
|
|
|
|
|