need educated on colt/ s&w model 1917

"FWIW two versions exist, an early version with a pivot and a separate coil spring, and a later fixed version that is flexible and acts as its own leaf spring; I believe the American M1917's used the first version, and the first-run Brazilians used the second."

Correct on the two versions of the wing hammer block.

The first version was used into the 1920s. The first version also had a pin in the sideplate that rode on the hand.

These pictures are of, I believe, a first version hammer block on my early late teens early 20s Regulation Police .32.

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The second version of the wing hammer block omitted the pin and put a subwing (my terminology sucks) on the hammer block, and made the hand into an inclined plane that pushed the hammer block out of the way when the trigger was pulled.
 
I got my Colt 1917 a few years ago for around $450. It shows it's wear, nicely. It was made in 1919.
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JWise - likely you are looking at the Colt serial number (and comparing to Proofhouse or Wilson's tables) to determine that your gun was made in 1919, however the Army serial number may put it back in 1918, looking at this site - http://oldguns.net/sn_php/mildateslookup.php?file=us_m1917colt.dat

JMG (John Gilbert) was an inspector during the war, which would also support this being a 1918 gun.

I am hoping that one of our resident experts can help explain this discrepancy.
 
Hmmm... 1918, huh? That would be interesting.

EDIT:

I looked it up, and based on the serial number on the bottom of the grip, the handgun was made in April of 1918.

 
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When the war ended in 1918 and the contracts were cancelled, both Colt and Smith & Wesson had a TON of parts -- frames, cylinders, etc. -- that had been made and paid for, but not used.

It could be that your gun was caught in a partially manufactured limbo, and that's where the discrepancy on dates is coming from.
 
Mike -

I understand about leftover parts being used much later (Colt did that a lot), but didn't they wait until the guns were complete to apply the inspector's stamp over the cylinder release? Both our guns have JMG, and he is listed as the inspector for 1917-18.

According to this - http://www.coolgunsite.com/pistols/usarevpage_m1917.htm - Gilbert was the inspector from Army #29,700 to 64,000, and after May 1918 an Eagle's head was used.
 
To be honest, I don't know.

I know both Colt and S&W were struggling to turn out as many guns as the Government was demanding (so much so that the military took over control of operations at S&W for the duration of the war)...

Could the normal inspector approval process have been altered? Maybe...

Or, were the inspector stamps put on prior to final finishing so that they would have a full finish bluing?

Again, I don't know.
 
I am not sure about the hammer block situation. Neither my S&W Model 1917 (939xx) nor my Brazilian contract model (1640xx) have hammer blocks of any kind, nor are the sideplates cut for them.

Further, the Brazilian gun has the U.S. eagle markings on the barrel and frame, indicating that it was not made as new. Reportedly, S&W bought back from the U.S. Army both parts and completed guns in order to fill the Brazilian contract, and my revolver supports that belief. (The Army took over S&W during WWI because of production delays, and at the end of the war seized all M1917's and parts as U.S. property, so S&W had no "leftover" 1917's or parts.)

FWIW, all Model 1917 revolvers were shipped from the factories as blued. Both companies skipped final polishong, so the finish is often dull (some Colts are really rough looking) but they were all blue, not Parkerized. Parkerizing was done when the guns were taken from storage and refurbished during WWII.

Jim
 
I posted the serial number discrepancy issue over at the Colt Forum and one of the regulars there looked it up in Charles Clawson's book. My gun was delivered to Springfield Armory on April 1st, 1918, making the manufacture date likely sometime in March. :)

Addendum from coltforum.com (thanks and attribution to haggis) -

There are three major date sources that use Larry Wilson's research in the Colt archives to establish Colt dates:
The Book of Colt Firearms by Wilson and Sutherland
Proofhouse.com
Colt's online serial number lookup website
Much of the data from these sources is correct, but some is not. Those models whose data are known to be questionable include M1917's, New Services in the near WWI time frame, New Service M1909's, and some Detective Specials. There may be more not yet discovered.

Good data on M1917's can be obtained from Clawson's "Big Book", and from M1917 weekly production data (both Colt and S&W) originally from Benedict Crowell's "America's Munitions, 1917-1918", published in 1919, and which have been updated by Charlie Pate in his book on WWII secondary US handguns. From the discussion in this thread, there are probably other correct sources, as well.

I bring this up (again!) because it seems that most people go directly to Proofhouse or Colt's website with no regard to (or knowledge of) the accuracy of those sites. In the overall scheme of things, I guess it's no big deal, but it gets frustrating to hear posters talk about their Colt M1917's made in 1919 or 1920. FYI, there were only about 5000 Colt M1917's made in the first 6 weeks of 1919 - none after that.

Buck
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The leftover parts were those that Smith repurchased from the Gov. Apparently early Brazil Ian contract guns were made with some of those.
 
Might I ask those who own or have access to S&W Model 1917's to check and see if they have hammer blocks. I have examined several 1917's and am pretty well convinced that none had the block, but I would like a larger sample. There is no need to remove the sideplate; you can look in front of the hammer and watch the old "wing" block moving sideways in and out of the sideplate as the hammer is moved back and forward.

I note that the Brazilian contract revolver Driftwood shows is an ex-U.S. Army gun or at least frame. I wonder if it has a hammer block.

IIRC, the GHS (Gilbert H. Stewart) mark indicates the gun was inspected at S&W. The later eagle inspection marks were applied at Springfield Armory; the completed guns were simply trucked across town.

Jim
 
I had to make a quick trip home so I checked.

My Brazilian 1917 has the late style wing hammerblock.

Mine is close to the end of the 1930s run so it is probably a newly manufactured frame.
 
Howdy

No hammer block in the 1918 vintage Model 1917. I took this photo of the guts when I had the side plate off a few months ago. If there had been a hammer block in the side plate I probably would have taken a photo of it. Besides, as you can see there is no 'ramp' on the hand to actuate a side plate mounted hammer block.

serratedhammer02.jpg




James K - you state that my Brazilian is an ex-army gun, or at least the frame is. Can you explain how you know that? I took a look and as far as I could tell I could not see a hammer block sliding away inside the frame. I may have to pop the side plate off to make sure. I have no shipping date on that one, I will have to look into that.


Just so everybody knows what we are talking about, here is an M&P that shipped in 1939. It has the type of hammer block that is pressed into the side plate. In this photo you can see the hammer block pressed into a slot in the side plate, and you can see the 'ramp' on the pawl (hand) that activates the hammer block. As the pawl rides up, the ramp forces the hammer block back into the frame.

hammerblock_zpsee9433ec.jpg


For what it's worth, this is the type of hammer block that failed in the famous incident in WWII where a Victory Model fell to the deck of a warship and discharged, killing a sailor. I believe I have read that upon investigation it appeared that cosmoline or some other type of grease bound up the hammer block and prevented it from functioning properly. Plus, who knows how far the gun fell? I read it fell from the superstructure of a warship and hit the deck. It may have fallen many feet.


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Now I have a question. According to the Standard Catalog of Smith and Wesson by Supica and Nahas:

"The cylinder is heat treated for strength and is a fluted six shot having a nominal length of 1.55" with a square cut shoulder to allow the use of the rimless 45 ACP cartridge without the use of the half moon clips, when necessary, and is also head spaced to allow the use of the 45 Auto Rim cartridge."

It does not say early cylinders were not heat treated, and it does not say later ones were. I infer from this statement that starting in 1917 the cylinders for this model were heat treated.

Comments?
 
Huh.

I'd always read that the cylinders for the 1917 were not heat treated because of the press of wartime necessities.

I was going to post pictures of my Brazilian's sideplate, but Driftwood's pictures are far better than the quick cellphone snaps I took.
 
...and based on the serial number on the bottom of the grip...
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...this is not the serial number of the M1917. The Manufacturer serial number will be found opposite the crane and that is the one to use to date the pistol.

The number on the butt was applied at the arsenal and is the Government number. They serialized separately and the numbers do not match up to the manufacturer's serial #.
 
That is partially correct. The Colt M1917 has two serial numbers; the one inside the crane is the serial number in the New Service series, sometimes called the "Colt serial number." The number on the butt is the "Army serial number". The former were not in series for the M1917, as Colt continued to make the New Service for commercial sales (Colt's commercial guns of that era had no butt serial numbers). The latter "Army" numbers are in series for the 1917 and are unique to that model.

Both markings were put on at the Colt factory, not at "the arsenal" or anywhere else.

S&W assigned their M1917 a new number series, since they considered it a different model from other revolvers made on the same frame, so the butt serial number is the true factory and Army serial number,

AFIAK, all S&W Model 1917 revolvers were delivered to Springfield Armory (in the same city, Springfield, MA) and distributed from there; Colt M1917's were shipped to whatever depot the Army directed, the same as Model 1911's.

Jim
 
I've owned Smiths for like a hundred years....OK, 43 years. Anyway isn't the hammer block redundant to the trigger spring guide thingy that keeps the hammer from going forward? I've been carrying my Brazilian contract with the hammer down on an empty chamber, but not sure why.
 
The rebound slide (the "thingy") and the hammer block safety have different purposes. In a swing cylinder revolver, it is necessary to have the hammer rebound after firing because if the hammer nose (firing pin) remains in the primer, the cylinder will be difficult or impossible to open. With a break top revolver, the cylinder is moving away from the firing pin in an arc, so a non-retracting firing pin is less of a problem.

That being the case, both S&W and Colt developed different ways to effect hammer rebound. S&W first used a rebound lever, powered by its own spring. In the 1905 design, that was replaced with the rebound slide as we know it today. It seems that S&W first thought the rebound slide would indeed serve as a hammer block safety. But they found out that two things could happen if the hammer were hit hard enough. Either the rebound slide, which is fairly thin, could be crushed, or the hammer stud (pin) could shear off. In either case, the gun would fire. So they developed a hammer block safety.

Colt went basically the same route, finding that their rebound lever was not enough, and they developed their famous "positive safety". Unlike S&W's safety, which was spring powered, Colt's system worked off the trigger; if it wasn't engaged, the trigger could not move forward to engage the hammer for a shot.

In the famous Navy incident, an S&W M&P discharged when dropped on the hammer and killed a sailor. Investigation showed that the spring-powered safety was stuck due to old grease and couldn't move out to block the hammer. It was a freak accident, but S&W redesigned its hammer block safety to be "positive" and independent of any separate spring. That system is in use today and like the Colt system, will prevent the trigger from engaging if the safety is not operating.

Jim
 
Hi, Driftwood,

My error on the Brazilian contract gun. I got confused and thought that GHS marking was on it, rather than on the US M1917.

Jim
 
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