I have finally decided to set up my old forge. I have a Canedy Otto Manufacturing, Model H Western King hand crank blower that came with this shop built forge. The blower seemed pretty stiff to turn so I disassembled it expecting to wire brush and lube the gears inside the case. To my surprise one of the gears was made from fiber and I think it is paper. I did a little measuring and found the gear to be 1" wide, 40 tooth, 16 pitch and I think 14 1/2 pitch angle. I think this gear is paper to reduce noise but a plastic gear might serve the same purpose. To repair this old blower would be my first choice. I have looked at a few gear vendor sites but haven't found this gear but I did find this 1/2" wide, steel gear that looks to be the right dimensions otherwise.
McMaster Carr 6325K19 Steel Plain Bore 14-1/2 Deg Spur Gear 16 Pitch, 40 Teeth, 2.5" Pitch Diameter, 1/2" Bore In stock at $29.22 Each
I have also been thinking of mounting a 1800 rpm motor on the blower and scrap the hand crank gearbox. The other option would be to find a suitable blower with an electric motor already mounted. Ideas? comments?