May 12, 2008
Construction of the Stone Nuts
The stone nuts are designed to transfer power from the great spur wheel to the
millstones in the windmill. In the event that winds are low and there is not
enough power to drive all of the stones, one (or more) of the stone nuts can be
disengaged and the mill can continue to operate.
Because the teeth of the great spur wheel are assembled from ash, the stone
nut's teeth were also turned from ash blanks on the lathe. Using the same
wood on interacting gears reduces the likelihood of uneven wear during operation.
The balance of the gear (and the remainder of the gears that will be assembled)
are constructed entirely from white oak because of it's weather resistant qualities.
The position of stone nuts in the machine hierarchy is illustrated in yellow
in the diagram below.
Unlike the great spur wheel (a typical gear), the stone nuts are lantern pinion
gears and they have cylindrical teeth between two hardwood plates. As you might
imagine, the plates must be perfectly aligned for the teeth to fit properly and
there was flurry of unusual activity as our assembly team tried to fit the gears
together. Although the project was conducted on a Monday evening, the volunteer
turn-out was excellent and we had many new participants.
Special thanks to all of the volunteers who participated in construction and assembly
of these gears:
|Mrs. Bonnie Karwac||York County Historical Museum
|Mr. Jerry Karwac||York County Historical Committee
|Mr. James Obernesser||York County Arts Commission
|Cody Williams||Troop 123 of Seaford, Virginia - Boy Scouts of America
|Daniel Akers||Troop 123 of Seaford, Virginia - Boy Scouts of America
|Ross Davenport||Thomas Nelson Community College
|Lee Latimer||Citizen of York County
|Madelaine Akers||Old Dominion University
|Mrs. Evelyn Akers||The Celebrate Yorktown Committee
|Mr. Walt Akers||The Yorktown Foundation
For additional information, please contact Walt Akers