Now that you mention it, the mine it came out of originally had mule drawn carts that took the ore out of the mine, that is probably what it was used for, repairing the harnesses etc.. The guy we got it from didn't really know and just assumed it was for work boots. The number on the hand crank says No 6202, the shuttle looks like it's been repaired in the past and a part came off, probably needs replacing. Thank you for all your information on this old antique, we payed $700 for it not knowing anything about it, or what it's actual worth is but it's a lot of fun researching and learning about it.