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Gentlemen,
Accidentally, I stumbled across three different German patents, all relating to insertion barrel attachments. This find fits to a post of Luke
http://www.gunboards.com/luger/topic.asp?TOPIC_ID=4642
regarding his question of a muzzle cover for sale on ebay.
Anyway, I hope (I pray!), my patent find is interesting for the Luger experts:
1/ German Patent # 432028 of Karl Weiss and RWS, Nuremberg applied on February 08, 1923
Abstract of the patent:
"A lining tube is secured at the front only by being screwed into a sleeve fixed at the muzzle of the barrel. As shown, a sleeve 5 fits over the muzzle and is fastened by a bayonet-joint using the foresight base as an abutment. A bush 6 is screwed into the sleeve at the front to bear against the muzzle of the barrel and thus to clamp the sleeve against the foresight base. The lining tube 3 has a screw-threaded part 9 near the front and is screwed into the bush 6 and locked by a nut 8."
Download Attachment:
de432028.jpg
140.83KB
drawing of the Weiss/RWS patent
2/German Patent # 450713, of Polte Metallwerke, Magdeburg applied on February 08, 1923 – the very same day, the Weiss/RWS patent was applied!
Download Attachment:
DE450713.jpg
155.96KB
drawing of the Polte patent
3/German Patent # 461610 of Friedrich Gomann, Berlin, applied on April 03, 1926
Download Attachment:
DE461610.jpg
131.66KB
drawing of the Gomann patent
A fourth design was used Erma, using two counter-nuts. Fritz showed us already photos of this design here:
http://www.gunboards.com/luger/topic.asp?TOPIC_ID=1041
Regards
Martin
Accidentally, I stumbled across three different German patents, all relating to insertion barrel attachments. This find fits to a post of Luke
http://www.gunboards.com/luger/topic.asp?TOPIC_ID=4642
regarding his question of a muzzle cover for sale on ebay.
Anyway, I hope (I pray!), my patent find is interesting for the Luger experts:
1/ German Patent # 432028 of Karl Weiss and RWS, Nuremberg applied on February 08, 1923
Abstract of the patent:
"A lining tube is secured at the front only by being screwed into a sleeve fixed at the muzzle of the barrel. As shown, a sleeve 5 fits over the muzzle and is fastened by a bayonet-joint using the foresight base as an abutment. A bush 6 is screwed into the sleeve at the front to bear against the muzzle of the barrel and thus to clamp the sleeve against the foresight base. The lining tube 3 has a screw-threaded part 9 near the front and is screwed into the bush 6 and locked by a nut 8."
Download Attachment:

140.83KB
drawing of the Weiss/RWS patent
2/German Patent # 450713, of Polte Metallwerke, Magdeburg applied on February 08, 1923 – the very same day, the Weiss/RWS patent was applied!
Download Attachment:

155.96KB
drawing of the Polte patent
3/German Patent # 461610 of Friedrich Gomann, Berlin, applied on April 03, 1926
Download Attachment:

131.66KB
drawing of the Gomann patent
A fourth design was used Erma, using two counter-nuts. Fritz showed us already photos of this design here:
http://www.gunboards.com/luger/topic.asp?TOPIC_ID=1041
Regards
Martin