Lee Valley Tools Woodworking Newsletter
Vol. 1, Issue 4
May 2007
Featured Patents

Bishop's Patent Backsaw

Saw profile

Although this saw is marked with the date of Jan 9, 1906, the original patent, #607,107, was granted on July 12, 1898. The patentee, Fred Wuest of Lawrenceburg, Indiana, assigned the patent to the George H. Bishop Saw Co., of the same location. Bishop was in business in Cincinnati, Ohio, from about 1882 to 1899, then moved to Lawrenceburg. Operations ceased in about 1920. This type of saw is commonly known as the Bishop's patent backsaw.

The patent papers state that the moveable bar allowed for an accurate gauge to cut repeatable tenons or gains. The papers also suggested that a different pitch could be filed on either side of the blade to give a fine or coarse cut. However, the real patentable claims were the unique slotting arrangement of the handle and locking mechanism, and the detent bar inserted at the end of the movable gauge, which engaged the blade and gave a positive lock for the depth control. The teeth on the end of the saw blade were never intended to be used in a woodcutting situation. They were used to engage the special detent device at the end of the bar.

Blade end

   Go to Page:   1   2   3   4   Next Page

Other Articles from this Issue
What's New in Woodworking
Left-Hand Edge Plane

Edge Plane
Magnetic Wrist Nail Holder

Magnetic Wrist
Nail Holder
Fractional Electronic Caliper

Electronic Caliper
Economy Turning Tools

Turning Tools
36" Steel Straightedge

36" Steel
Tape Tip

Tape Tip
Razor Blade Block Plane

Razor Blade
Block Plane
    News & Events  
  From the Collection
Featured Patents
From the Archive
Customer Letters
What Is It?
    Subscriber Services

Privacy Policy

Newsletter Archive