Edison LU37 Speed Control

Hey guys and Gals..I am restoring a LU37...No Speed Control knob???...is there one????....there is Gov. speed control pads etc...but no knob on the bed plate?..am i missing something??...Thanx

All Edison cylinders and Diamond Discs were made to rotate at only one speed. No control was necessary once the machine was calibrated. All Diamond Discs turned at 80 RPM.

The lateral needle cut discs were another matter. Victor was using 70 RPM (most were really 71), then 75 RPM, and then 76 RPM. Meanwhile, Columbia and other companies were using 80 RPM. So most needle cut players had pitch controls for the user to set for each record.

I'm not all that familiar with the LU series DD players, but I do know that the standard Edison models did have provisions for speed adjustment. Look over the instructions provided in this generic Diamond Disc owner's manual (pages 8&9):

http://www.nipperhead.com/old/ddisc.htm (Click on the "thumbnail" images to make them full size for viewing/printing.)
(Main page: http://www.nipperhead.com/old/ephemera.htm )

It may be that they did not include the speed control knob on your model. (Look carefully to see if there is a hole positioned above or near the governor shaft. This would indicate that the knob is missing.) If a speed knob was not included, then likely, the speed set screw, described on page 9 of the owner's manual, was the only provision for adjusting the turntable's speed.)

The Edisonic models were all made with the speed control underneath the bedplate, but in the same position as those on top on earlier models. The London upright was one of the last standard players still being produced, and probably would have received the same mechanism as the Schubert model late in their production.

I had a late C-19 that was devoid of an upper speed control knob and the speed had to be adjusted underneath, IIRC via a spring loaded set screw that adjusted the governor yolk tension against the governor disc.
Edison Diamond Disc machines came adjusted from the factory to play at a speed of 80 rpm but were all capable of lesser and greater speeds (to play non Edison records with an adapter) as were the cylinder machines. The earliest wax cylinder speeds varied from anywhere from 125 and up. They were later standardized at 160 rpm but the 2M machines could all be adjusted for the earlier wax records though it became a pain when Edison did away with the above the bed plate speed control knob after the Mod. A machines. The 4M Amberols & Blue Amberols were all recorded at 160 rpm but again they all had a form of speed adjustment.