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    Light Gunsmithing

    Iver Johnson Model X

    The Iver Johnson Model X Stock is really walnut. The orange color is the last of at least three coats of paint – and no, I have no idea!
    The Iver Johnson Model X Stock is really walnut. The orange color is the last of at least three coats of paint – and no, I have no idea!
    The single-shot bolt action is sometimes said to have been invented by John Browning, with inspiration from the simple door bolt.
    The single-shot bolt action is sometimes said to have been invented by John Browning, with inspiration from the simple door bolt.
    The name John Browning is known to all shooter folk who have been in the game for a short time. He was a versatile designer of firearms for several manufacturers as well as the U.S. military. Cartridges fired by his guns ranged from 22 rimfire to 37mm. Many were so popular that they are still made today as “reproductions” in Japan, Europe and South America. Countless expired Browning patents are in use on other guns made today. As a result, Browning is often referred to as one of the greatest gun designers of all time.
    The Model X is very lightly stamped on the Iver Johnson’s receiver ring.
    The Model X is very lightly stamped on the Iver Johnson’s receiver ring.

    Like other well-known firearms designers of his era, Browning’s interest lay with repeating arms, whether handguns, rifles, shotguns or machine guns. There was, however, one exception. Browning designed the Winchester M1900, single-shot 22 rimfire. The receiver was nothing more than a bolt-activated door latch, hardly a new concept, as Mauser had been making rifles on the same idea since at least 1872. Plus, the M1900 design was not complete – it did not have a rebounding firing pin or safety! Thomas C. Johnson of Winchester had to correct this and other faults – hardly a brilliant design.

    The Mark X bolt handle (bottom) appears to be forged in one piece with the body, so it can’t break off or fall out like the Remington  M514 (top).
    The Mark X bolt handle (bottom) appears to be forged in one piece with the body, so it can’t break off or fall out like the Remington M514 (top).
    The point here is that the world’s best gun designers weren’t much interested in single-shot rimfires. This despite the fact that up until the 1930s, probably more of these rifles were being sold than centerfires, excepting, of course, military models. It was up to employees of small gun makers to come up with ideas to make designs simpler, easier to produce and thus more profitable. Laboring in obscurity, they are long forgotten, their legacy remaining in finely fitted pieces or heat-treated steel and clever mechanisms treasured only by those who appreciate such things.
    Other single-shot rifles had automatic safeties (see arrows) like the Rem M510 (top), but were stamped sheet metal. The Model X (bottom) was made of case-hardened steel. It will last forever.
    Other single-shot rifles had automatic safeties (see arrows) like the Rem M510 (top), but were stamped sheet metal. The Model X (bottom) was made of case-hardened steel. It will last forever.

    Fortunately, this is not the case with the rifle featured here. The design is brilliant, shockingly simple and completely safe when loaded. While the rifle is a bolt-action, single-shot 22 rimfire of the genre “boys rifles,” it could just as well be chambered for 25/20, 32/20 or any of the various sub-22 rimfires available today. It is the Iver Johnson (IJ) Model X. That’s right. Iver Johnson. 

    Today, there are few shooters who have heard of Iver Johnson’s Arms and Cycle Works. The chronicles tell us the company began in 1871 when Norwegian gunsmith Iver Johnson and Swedish gunsmith Martin Bye began making muzzle-loading pistols in Worcester, Massachusetts.

    When the Model X bolt is pulled back, the ingenious safety (arrow) snaps over automatically.
    When the Model X bolt is pulled back, the ingenious safety (arrow) snaps over automatically.
    Bye retired in 1883, and the company name became Iver Johnson’s Arms and Cycle Works because the manufacture of bicycles had become most profitable. Then there was a move to Fitchburg, Massachusetts. The company also produced a line of cartridge handguns, police equipment, tools and general hardware items. In 1879, we are told the first double-action revolver made in America (in 38 S&W) was an Iver Johnson. Talented engineers were needed to produce such a variety of products. Unfortunately, IJ guns have a reputation for being cheaply made. This is probably due to their single-shot “farm guns” and revolvers selling for less than Winchester, Colt and Smith & Wesson.
    Closing the bolt leaves the safety standing up, and it must be physically moved down to fire the rifle.
    Closing the bolt leaves the safety standing up, and it must be physically moved down to fire the rifle.

    Also, the IJs’ outward appearances resembled several cheap American and imported guns sold as “house brands” and “hardware store” items. The reputation is unfair as IJ made revolver models that were just as good as S&W or Colt, but were lighter weight due to being chambered for less powerful cartridges: 22 rimfire, 32 rimfire, 32 long centerfire and 38 S&W only.

    To dispel any doubt about IJ’s design/engineering capability, consider that in 1893 the company introduced its premier Safety Hammer Automatic Revolver. The safety part referred to IJ’s invention of what is a form of today’s  transfer bar safety. It positively prevents the gun from firing unless the trigger is pulled and held to the rear. The word Automatic in the title indicates automatic

    The one-piece extractor of the Model X is simple.
    The one-piece extractor of the Model X is simple.
    ejection of all six cartridges when the gun is opened.

    Despite the growing popularity of the 22 long rifle, IJ didn’t make a rifle to fire it. In fact, the company didn’t make any rifles at all. World War I came and went, and still no inexpensive 22 rimfire rifle. Then, in 1928, the situation changed with the introduction of the Model X. Iver Johnson’s description of the rifle is shown in a photo from the 1931 Stoeger catalog. The text mentions a “knob forend.” As can be seen from other photos, the knob has been removed from my gun. Apparently, it offended a previous owner’s sensibilities, but the orange paint? Perhaps the fellow was temporarily out of stock finish.

    Another brilliant idea is the long, flat spring (arrow), which serves to retain the extractor, act as a trigger and as a sear return. Removing the screw drops out all parts for cleaning.
    Another brilliant idea is the long, flat spring (arrow), which serves to retain the extractor, act as a trigger and as a sear return. Removing the screw drops out all parts for cleaning.

    As said a bit earlier, this is not an ordinary single-shot boys’ rifle. The design is brilliant, worthy of a great gun designer, but that’s not what happened. The inventor was a chap named Arthur P. Curtis, who one reference describes as “an assistant to the president” of Iver Johnson Arms and Cycle Works, whatever that means. Mr. Curtis may not have been a John Browning, J.D. Pedersen or William Mason, but he conceived a simple, safe and easy-to-produce single-shot mechanism, something none of the great designers ever did.

    Removing the rear bolt pin drops the safety out for cleaning. A second pin frees the mainspring, but only remove this to replace the firing pin.
    Removing the rear bolt pin drops the safety out for cleaning. A second pin frees the mainspring, but only remove this to replace the firing pin.
    This rifle was called the Iver Johnson Self Cocking Safety Rifle because of the ingenious automatic safety. When the bolt is raised and pulled back one-half inch a projection on the rear of the bolt body snaps to one side. This is the automatic safety (see photo). The bolt is pulled back another inch to extract a fired case. There is no automatic ejection. Pushing the bullet of a fresh cartridge into the chamber and dropping the case on the extractor readies the bolt for closure. As the bolt is pushed forward, it is stopped by the safety, making contact with a sidewall of the receiver. A bit more pressure must now be exerted on the bolt handle because the action is cock-on-closing, but not nearly as difficult as an Enfield (for example) when worked normally.

    The rifle is now cocked, loaded and completely safe due to the safety parts being .16-inch thick case-hardened steel and not the bent sheet metal of the Remington M510 or later Winchester M47.

    The firing pin tip of the Model X is large and has a heavy impact on the case at right.
    The firing pin tip of the Model X is large and has a heavy impact on the case at right.

    The automatic safety feature of the last two rifles is often found to be filed away, bent or difficult to engage/disengage due to excessive wear. To disengage the Model X safety, it is tempting to reach up and pull it down with the thumb of the shooting hand just before firing a shot. One pre-World War II reviewer said this very thing. Iver Johnson and Mr. Curtis did not intend this. A small notch was cut in the rear of the action wall for the safety arm to fall into.

    Indeed, it had to be this way to prevent the safety from being pushed or by simple handling or carrying in the field. Proper disengagement is to grasp the safety with the thumb and forefinger (it is shaped for this), pull back and push down, then position the hand on the grip and trigger. No accidental discharge is possible; that’s why it’s called the “Safety Rifle.” Another brilliant design feature of the Model X is the long, flat spring on the bottom of the receiver. As shown in the photo, it serves as a return spring for the trigger and sear (both of which are .250 inch thick case-hardened steel) and to control the extractor in its back-and-forth movement. It couldn’t be simpler. This spring is .060 inch thick and could be replaced with a thinner one to lighten the trigger pull. The trigger pull on the rifle shown was just over three pounds, so that was not needed.

    The IJ Model X is simply fascinating to anyone interested in rimfire rifle design. Most all of its few parts are made from steel and appear to be case hardened. The only stamped sheet metal is the trigger guard and buttplate. Thus, if not abused, the gun should last almost forever. The only boys’ rifle so constructed.

    The chronicles tell us there were three variations of the rifle produced. These included two stock styles, two sight options and 22- and 24-inch barrels (maybe). Designer Arthur Curtis did a good job. A Model X belongs in every serious collection of 22 rimfire boys’ rifles.

    Wolfe Publishing Group