Dating boards in new england
After 1700, its major use was as a large jigsaw to shape knees, ribbing, and planking for ships.The up-and-down saw, was used in this country from the 1680s until early in the 1900s.
For the first ten years of production, machine made screws were made with no slot in their head.
Furniture built in the Midwest and the South is different from New England made pieces.
The problem with using style to establish the construction date of country and primitive furniture is that regional styles remained unchanged for most of the 19th century.
However, a perfected machine was not developed until 1860.
Lawsuits over patent rights prevented its use until 1880.