I have a project underway that relates back to one of my earliest posts on this blog. I’m making a copy of a seventeenth-century turned chair with a board seat captured in grooves in the seat rails, rather than a woven seat around the seat rails. The chair I’m now building has four legs, back in July 2008 I wrote one of my first blog posts about a three-legged version. https://pfollansbee.wordpress.com/2008/07/05/three-footed-chair/
here’s an earlier version I did of this chair:

Its main feature to my eye is the construction of the seat rails. Because the seat is a panel captured in grooves, the seat rails need to all fall at the same height. With woven seating, the seat rails are staggered in height, so the joints don’t interfere. (usually the side rungs are higher than the front and rear rungs, maybe always) But with the board seat, the joints actually intersect. Often, like the chair I’m working on now, it’s a combination of a rectangular tenon pierced by a round tenon. One thing all this means is the parts are very heavy and thick. Here’s the rectangular tenon test-fit into one of the posts.

I’ve used the following photo a lot over the years, it shows the round tenon running right through the rectangular one. This is from a 3-legged version, but the effect is mostly the same for 4-legged ones. Easier geometry.
This chair is ash, (Fraxinus, usually around here Fraxinus americana) riven from a straight-grained log, hewn and prepared (either by planing or shaving with a drawknife) then turned on the lathe. The seat rails are 1 3/4” in diameter, the posts are 2 1/8”-2 1/4” thick. That’s heavy stuff. Good straight ash splits evenly and easily, it’s a real treat to use.
The original chair I’m working from is one of two by the same unknown maker, both at Pilgrim Hall Museum in Plymouth Massachusetts. One belonged to Governor William Bradford,

the other to the church elder William Brewster.

Brewster died in 1644, Bradford in 1657. His inventory included lots if itemized and well-described furniture:
“a Court Cubbard £1-05, winescot bedsteed and settle £1-10,
4 lether Chaires £1-12, 1 great lether Chaire 10s, 2 great wooden Chaires 8s, a winscott Chist & Cubburd £1-05, 2 great Carved Chaires £1-04, a smale carved Chaire 6s, 1 great Chaire and 2 wrought stooles £1, a Carved Chist £1″
Well, we know this chair at Pilgrim Hall is not the “carved” chairs, nor is it leather. So it’s either one of the “great wooden Chaires” or just simply the “great Chaire” that was listed along with the “wrought” stools. Aren’t they all wooden chairs, you ask? Often the adjective describes the seating material – thus these could be referred to in the period as wooden chairs. “Great” is taken to mean either “large” or often, “with arms.” One thing about the Bradford inventory that vexes me is the value assigned to the 2 great wooden chairs – 8 shillings. If the chairs are equals, then 4 shillings isn’t a lot for a chair like this. If the 2 great carved chairs are also equal, they’re worth 12 shillings each. A pretty big difference, I’d guess this chair is as much work as a carved one, maybe more. The great chair listed with the 2 wrought stools is harder to estimate because of the stools. “Wrought” usually means “worked” in some way. In stools and chairs, it’s often considered upholstered.
The Bradford chair is in better condition than the Brewster. It’s missing some height, the bottoms of the posts are right at the stretchers. One thing I like about this wear & tear on this original object is it clearly shows the type of bit used to bore this mortise – a round-bottomed hole like that is the result of using what we now call a spoon-bit.

Here’s a spoon bit, showing the rounded tip that makes a hole like the one above:
The upper rear rail is thought to be a replacement, as is the board seat. Brewster’s is missing several spindles, a couple of stretchers, upper rear rail and has a leather seat wrapped around the rails.
I’ll post construction notes and photos as I go. Lots to see in this chair.
For some details about the chairs’ histories, see the page at Pilgrim Hall’s website about their furniture. If you’re near Plymouth, don’t miss the museum. They have great stuff. http://www.pilgrimhall.org/ce_funiture.htm
Here is a link to Trent and Alexander’s article from American Furniture http://www.chipstone.org/article.php/569/American-Furniture-2007/American-Board-Seated-Turned-Chairs,-1640%E2%80%931740
Nice article Peter. Do you lay out and cut the mortise and tenons when pieces are round, or do you lay out and cut them prior to turning? If you do the joinery after turning, that seems pretty tricky to me. Thanks!
Harvey = thanks for your note. I cut the joinery on the turned bits, not before. Each approach has its advantages and disadvantages. I find cutting the joints after more accurate than the alternative. You’ll see it here in the next few posts.
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Peter, I am a woodturner that also teaches general woodworking and I’d like to make my own copy of William Bradford’s chair. My great grandmother was a Bradford, related to Wm. Bradford.
Are there measured drawings available?