A ball with a wing attached

[Stiles/Akin]

 

[John Winn]

Maybe this one:

From: Ripley, Warren. (1970). Artillery and Ammunition of the Civil War. (New York, Promontary Press). p. 331.

Mr. Ripley doesn't have a name for the inventor so the article is an added piece of info although we don't know for sure if this is what Mr. Van Buren put together. Good chance though I'd say.

 

[redbob]

Dickey & George's Field Artillery Projectiles of the American Civil War (p.314 1993 edition) identifies the above mentioned projectile as a Scholfield's Patent Winged Shot patented in 1856 with improvements being patented by others in later years. This was a 3.67" round designed to be fired in a smoothbore cannon. There is a round of this type in a museum in Nashville and other projectiles have been found in Tennessee. It is unknown whether these rounds were CS or US though Scholfield lived in Conn.