Mike Walter informs me the Welte Chart sections previously published
do not correspond to his mechanism.  Attached are sections of another
original chart I have, showing specifically the various control
switches.

The chart is undated but is bound, along with a companion chart for
(Licensee) uprights, in a well-worn service manual with a copyright
date of 1924.  Someday I may get around to having it reprinted (if
it hasn't been reprinted already.)

Hopefully these cuts work for Mike's mechanism, with enough surrounding
detail to allow correct tubing.  If not, I'll try to have it scanned
and digitized.

John Grant

 [ http://www.mmdigest.com/Attachments/18/12/23/181223_121315_Welte_Chart-1.jpg
 [ http://www.mmdigest.com/Attachments/18/12/23/181223_121315_Welte_Chart-2.jpg
 [ http://www.mmdigest.com/Attachments/18/12/23/181223_121315_Welte_Chart-3.jpg
 [ http://www.mmdigest.com/Attachments/18/12/23/181223_121315_Welte_Chart-4.jpg