As International Harvester began to gear up for M1 manufacture, the firm was immediately faced with a number of daunting challenges, exacerbated by the fact the company had no prior firearm-making experience. The firm soon found this was impractical. A large number of unexpected problems arose, which caused a lot of consternation and resulted in a significant delay in starting rifle production.
Other than the receiver, one of the most challenging M1 components to manufacture was the barrel, and production was subcontracted to the Line Material Corp. The Milwaukee-based firm was an established maker of various equipment used in the transmission of electrical and telephone lines and had a well-regarded engineering and manufacturing team.
In addition to making barrels for use by International Harvester, Line Material also supplied a large number of M1 rifle barrels to various ordnance depots for use in rebuilding Garands. It is reported that Line Material sent some barrels directly to ordnance units in Korea for use in overhauling M1 rifles in theater.
Once production was underway, a plethora of functioning glitches arose, including a serious jamming problem that completely shut down the assembly line for three months until the cause could be discovered and a remedy devised. Other problems cropped up and were solved one by one, but IHC was never able to meet its contractual production schedule.
In order to help International Harvester get into Garand production as expeditiously as possible, a number of parts were procured from other sources. Interestingly, one of those parts was the most basic component of the rifle—the receiver.
There were four distinct variations of M1 receivers manufactured by Springfield for International Harvester. Most of these receivers were fitted with LMR barrels, although a few were fitted with Springfield Armory-made barrels. Once the problem was identified and solved, IHC began using unfinished Springfield Armory receivers that were on hand.
Most of the rifles were assembled with LMR barrels typically dated late or early , but it is believed some Springfield Armory barrels dated early were utilized as well. The reason for this change in the format of the nomenclature is not known. As IHC was winding down rifle manufacture, the company needed additional receivers to complete its production commitments.
Those receivers fall into the approximate 5,, to 5,, serial number range. As with many of the other components, the manufacture of stocks by International Harvester did not proceed as smoothly as originally envisioned. Initial plans were for IHC to make the stocks and fore-ends rather than using subcontractors—as was done for a number of other components.
Overton Co. These numbers are believed to represent a variation of the Julian dating system. International Harvester was the only manufacturer to utilize stocks stamped with such numbers. The other tractors for that year will have successively higher numbers. Your serial number should lie between two of the stated numbers. The list only shows the number from the first tractor built in each year.
Unless you happen to have the first first tractor off the production line, then your particular number will not be on the list. Your number will lie between two listed numbers. The engine, front axle, and cab may all have their own serial numbers. Various components may have parts or casting numbers. Make sure you have actually found the tractor serial number, and not one of these other numbers.
Model years versus calendar years Tractors, just like automobiles, are manufactured on a model or production year. The new production year usually starts around September. A tractor built in October of would have been considered a "" model. International in virtually off farm condition unrestored at Holcot steam fair International sn s-y at Bath and Southwest Tractor show The Farmall brand was discontinued in , all IH tractors after this date are International.
International Cub Cadet at a California tractor show. Post merger models are listed in a separate article List of Case IH tractors summarized in the Navigation list below;. Tractor Wiki. Agricultural Implements. List of Heavy Haulage Contractors. Explore Wikis Community Central. Register Don't have an account? List of International Harvester vehicles. View source. History Talk But its not a definitive list yet so please add any missing models.
How the tears on them? There are lots of online resources for finding out what year a tractor was built in based on serial number. Not sure if I can post them here but check google for "tractor serial number lists. J stands for Rockford clutch. Pretty much meaningless as ALL replacement clutches are Rockford style clutches now.
You can find model specific info at www. Well I navigated the afore mentioned serial number sites and could not find what I was looking for.
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