NEXT ZOOM MEETING - All welcome - The next Templot Club Zoom meeting is on Wednesday 12th April 2023 at 8pm UK time (20:00 BST - 19:00 UTC). How to take part: click here.

TEMPLOT 3D PLUG TRACK - To get up to speed with this project click here.

  • The Plug Track functions are experimental and still being developed. Some of the earlier pages of this topic are now out-of-date.

    For an updated overview of this project see this post.   For some practical modelling aspects of using Plug Track see The Book of Plug Track.

    The assumption is that you have your own machines on which to experiment, or helpful friends with machines. Please do not send Templot files to commercial laser cutting or 3D printing firms while this project is still experimental, because the results are unpredictable and possibly wasteful.

    Some pages of this and other topics include contributions from members who are creating and posting their own CAD designs for 3D printing and laser-cutting. Do not confuse them with Templot's own exported CAD files. All files derived from Templot are © Martin Wynne.
Martin Wynne

Wynn-Williams Patent Ground Lever Boxes

Here is an interesting page of photos and drawings about the working of the Wynn-Williams ground lever boxes. Each time the lever is pulled it toggles the points to the opposite side, and then springs back:

The original USA patent PDF is on the above Get file download button.

This is the drawing from the USA patent (click twice to see full size scan):


Supplier's catalogue drawings (click twice to see larger scans):



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