• Upcoming updates
    Over the next couple of weeks we will be performing software updates on the forum. These will be completed in small steps as we upgrade individual software addons. You might occasionally see a maintenance message that will last a few minutes at most.

    If we anticipate an update will take more than a few minutes, we'll put up a notice with estimated time.

    Thank you!

peter litherland

  1. A

    Must see: Peter Litherland 1792 Rack Lever Patent.... The Actual Document!

    This is the ACTUAL patent issued to Peter Litherland in 1792! The documents include the original Principal Letters Patent 1792 under seals of George III of Great Britain and Ireland and a handwritten certificate on watermarked paper from David Ewart, clerk to the Chancery of Scotland, addressed...

Forum statistics

Threads
178,952
Messages
1,569,577
Members
54,025
Latest member
Lurch
Encyclopedia Pages
909
Total wiki contributions
3,088
Last edit
Swiss Fake by Kent