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S&W Hand Ejectors: 1896 to 1961 All 5-Screw & Vintage 4-Screw SWING-OUT Cylinder REVOLVERS, and the 35 Autos and 32 Autos


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Old 10-25-2009, 02:28 PM
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Default Question on REG US PAT OFF Hammer/Trigger markings

Every 1930's-era revolver in my collection has the REG.U.S.PAT.OFF marking on the back of the hammer and trigger. That includes I, K and N-frames. Some loose humpback hammers in my parts box also have the marking.

Can someone tell me when these markings were first introduced and what the rationale was? I'm not aware of any fundamental changes to the hammer/trigger system in the late '20s that would warrant new notice of a patent registration. But starting to mark parts some 30 years after the basic design was introduced seems a little slow to post a patent protection notice.

I have looked through SCSW and the Neal-Jinks history, but I didn't spot anything addressing these factory markings. If I just missed them, I hope somebody will point me to the proper pages. Thanks for any help anyone can offer.
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Old 10-25-2009, 07:25 PM
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David, good question...

I wonder if it has something to do with the Spanish copies that were being made..??

When did the "Marcas Registradas" stamping on the frame start?
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Old 10-25-2009, 08:18 PM
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I wonder if it happened in the same time period as the patent was issued on the humpback hammer
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Old 10-25-2009, 08:44 PM
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The order to apply that marking was issued in June, 1926.

I think it was just in a period when they had become very interested in protecing the marks and design. The hammer and sear had been changed slightly in 1915 with the advent of the 1905-4th Change, so perhaps the new shape had been patented. It was only about 10 yrs old, so a 1915 patent would still be in effect.
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Old 10-25-2009, 10:01 PM
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Lee/Steve -- Thank you both. I see that I cannot put off a day longer getting a copy of the Neal/Jinks "handbook for collectors."

Curtis, the HB hammer was introduced in the late '30s. The patent application was made in 1937 and the patent granted in 1939.
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Old 10-26-2009, 06:29 AM
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Quote:
Originally Posted by handejector View Post
The order to apply that marking was issued in June, 1926.

I think it was just in a period when they had become very interested in protecing the marks and design. The hammer and sear had been changed slightly in 1915 with the advent of the 1905-4th Change, so perhaps the new shape had been patented. It was only about 10 yrs old, so a 1915 patent would still be in effect.





Hello David, Lee & Other's
Great Interesting Thread here. I Looked at my Regulation Police revolver that shipped in November 1926 and it has a stamping of "Reg. U.S. Pat. Off." on the back side of the Hammer and Trigger with Vibrant case Colors and the fine cross hatch style checkering, so that coincides with forum member stbryson's Response here. Does anyone have a revolver that shipped from a slightly earlier time span that would support these findings ? Just Curious here as to How early we saw this stamping after the Patent was applied for ?. Hammerdown
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Old 10-26-2009, 12:45 PM
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And if you notice that the post war transition guns with the pre war style hammer and trigger do not have the patent info on them.
Bill
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Old 10-26-2009, 05:05 PM
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My old .32-20 4th change has that on the back of the hammer. Neat info guys. Thanks for sharing.
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Old 10-26-2009, 05:11 PM
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Our 1937 38-44 has the markings also.

Charlie
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Old 05-28-2017, 04:40 PM
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SCSW, page 493: 1926:Reg. U.S. Pat Off was stamped on hammer and trigger, K and N beginning June. This was not a patent notice on mechanical design, but for color case hardening process. Dropped during WWII production.

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