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![]() | #21 | |
Senior Member Join Date: Jan 2003 Location: Long Island, NY
Posts: 6,935
| Re: Patent Application of the Week: Modular Lockwork for M1911 . .
My biggest problem with the P35 was the too-easy ability to reassemble it with the sear lever in backwards. | |
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![]() | #22 | |
Moderator Join Date: Aug 2004 Location: "Close, but no donut!"
Posts: 13,150
| Re: Patent Application of the Week: Modular Lockwork for M1911 Quote:
But since it's come up, is that part spring-loaded on a Browning? If it's not now, was it ever spring-loaded? I ask because it's free-floating on my FEG clone, which you'd think might cause problems but never has. | |
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![]() | #23 | ||
Senior Member Join Date: Mar 2006 Location: Show Low AZ
Posts: 1,103
| Re: Patent Application of the Week: Modular Lockwork for M1911 Quote:
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![]() | #24 |
Senior Member Join Date: Jan 2003 Location: Long Island, NY
Posts: 6,935
| Re: Patent Application of the Week: Modular Lockwork for M1911 . . Not no mo'! (Purely out of respect to the memory of M. Saive and the forum's vaunted high signal-to-noise ratio.) One of the things I've always admired about the former "Gun Geek," is that he is educable. |
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![]() | #25 | |
Forum Admin Join Date: Sep 2003 Location: Wilmington, DelaWhere?
Posts: 7,201
| Re: Patent Application of the Week: Modular Lockwork for M1911 Quote:
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![]() | #26 | ||
Senior Member Join Date: May 2005 Location: Charlotte NC
Posts: 556
| Re: Patent Application of the Week: Modular Lockwork for M1911 Quote:
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![]() | #27 |
Senior Member Join Date: Jul 2005 Location: Melbourne, Florida
Posts: 470
| Re: Patent Application of the Week: Modular Lockwork for M1911
I tried to detail strip the first Hi Power I owned. My thinking was that it was another JMB design and would take down similarly to a 1911. Holy crap was I surprised. Luckily, a phone call to a friend who was smarter than I yielded decent instructions. As far as a modular 1911 trigger system, after screwing around with series 80 parts, I am willing to look at it. |
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![]() | #28 |
Senior Member Join Date: Aug 2003 Location: USA
Posts: 1,277
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FWIW: I see that this patent was the basis for Nighthawk Custom's new drop-in M1911 lockwork.
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![]() | #29 |
Senior Member Join Date: Jul 2016 Location: Northern NV
Posts: 798
| If you break it down by patent holders, JMB invented everything but the magazine and one other piece that I can't remember at the moment. To the best of my knowledge, Saive never filed any patents on the magazine that I'm aware of. Still, Saive gets credit for the HP as he's the one that brought all the patents together, regardless of whom the patent holder actually were.
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![]() | #30 | |
Senior Member Join Date: Jul 2016 Location: Northern NV
Posts: 798
| Quote:
Back when I had to work on 11,000 Hi Power's, I found a large stainless steel "clothes pin" to hold the hammer back while I insert the sear/ejector pin...made life WAY easier. | |
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![]() | #31 |
Senior Member Join Date: Aug 2003 Location: San Antonio, Texas
Posts: 10,795
|
Browning didn't design the Hi Power. He died in November 1926 and the and the Hi Power was released in 1935. It is based on his designs and completed by Dieudonné Saive at Fabrique Nationale (FN) of Herstal, Belgium.
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![]() | #32 | |
Moderator Join Date: Aug 2004 Location: "Close, but no donut!"
Posts: 13,150
| Quote:
![]() But while you're on the phone, it it normal for HPs to rattle? Every one I've ever personally handled (which isn't that many, I admit), when dry fired empty, you can watch the right side of the slide rise up a little as you pull the trigger. Of course, with a loaded gun, the top round in the mag spring-loads the underside of the slide and removes this play. I just wonder why they all seem to be so loose. | |
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![]() | #33 |
Senior Member Join Date: Sep 2005
Posts: 2,540
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HOLY COW Dean's still with us. Good to hear from you. If you dry fire most military 1911's, you'll see the slide assembly do some interesting dancing on hammer impact. It's just the tolerances. In the case of the BHP, if stock, it's having to move the sear against the impressive hammer spring tension. |
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![]() | #34 | |
Moderator Join Date: Aug 2004 Location: "Close, but no donut!"
Posts: 13,150
| Quote:
The sear/hammer spring has nothing to do with the slide moving up as I described, it's being caused by the trigger pressing up on the long lever bar in the slide, and it happens during the take-up phase before the sear starts moving at all. But you're right about the "impressive hammer spring tension." I replaced the mainspring on mine and immediately got a much better trigger pull. And it's still virtually 100% reliable with .22 LR ammo, which is notoriously more difficult to light off than centerfire. Only reason I can figure for the super-heavy original mainspring is it helps cushion the impact of the beautiful light slide against the beautiful light frame, reducing wear/breakage. It's been a while, but I seem to recall that the spec weight for the stock HP mainspring is 32#. I think the one I put in was rated 22 or 24#. By comparison, I believe mainspring rating for a GI 1911 is 24#, and "worked" ones commonly have this replaced by something in the 18 or 19# range to improve the trigger, which still works very reliably. Others might know more, but that's my experience with the things. BTW, my HP now lives its life as a pretty much dedicated .22 plinker/trainer/fun gun, though of course I still have the 9mm top half to convert it back in under a minute. | |
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![]() | #35 |
Senior Member Join Date: Jun 2004 Location: Seattle area--Sodom & Gomorrah on Puget Sound
Posts: 2,104
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![]() | #36 | |
Senior Member Join Date: Jul 2016 Location: Northern NV
Posts: 798
| Quote:
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![]() | #37 | |
Senior Member Join Date: Jul 2016 Location: Northern NV
Posts: 798
| Quote:
Following the Suez Crisis, the Brits "liberated" a metric-azz-load of Egyptian 9mm SMG ammo intended for the Port Said SMG. So they wouldn't be fired in their handguns (Beretta 1951's), they used REALLY hard primers (Israeli's would copy this in the '80's). Well, the SAS really liked the barrier penetration of the Egyptian 9mm, and decided they wanted to use what they captured. So in 1961 (IIRC) FN just made the 32lb mainspring standard in the Hi Power. So the Brit's love of the Egyptian SMG ammo is why we have 9mm NATO today, and the 32lb mainspring in the Hi Power. | |
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![]() | #38 |
Senior Member Join Date: Jul 2016 Location: Northern NV
Posts: 798
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![]() | #39 | |
Senior Member Join Date: Sep 2005
Posts: 2,540
| Quote:
When I mentioned the hammer spring tension, the other end of the trigger bar has to press down on the sear to release it. The heavier the load on the sear from spring tension, the more likely you are to see the slide move while trying to release it. | |
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![]() | #40 |
Moderator Join Date: Aug 2004 Location: "Close, but no donut!"
Posts: 13,150
| The movement I'm talking about happens when the trigger bar first contacts the sear, LONG before enough pressure has been applied to move the sear at all.
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