woodsrider845:
Hendey lathe No. 12888, a 12 x 5, Cone Head model, was completed during the last week of August 1911. It was shipped with an Oil Pan and
a Taper Attachment. The original owner was the Grove Machine and Tool Company, Chicago, Illinois. At a later date, it was owned by Donahue Steel Company, Chicago, Illinois. There are no longer any Patterns, Castings or Repair Parts left in inventory for this lathe. All of the original drawings are still in the files, so parts can be made if required.
The part you posted a picture of is the Intermediate Gear and Bushing. It connects the Spindle Gear to the Sleeve Gear and the rest of the gear train. If you will look at page 4 of the 1918 Operator's Hand Book, in the lower left hand corner of the picture, your will
see a gear sticking out of the Headstock. This is the "D" or Stud Gear mentioned on page 18. The "C" Gear or Sector Gear is directly
below it and forms part of the compound gear train. To the right of the Stud Gear and separated by a spacer, is the Sleeve Gear that
meshes with the Intermediate and supplies power to the Bevel Gears and the Single Tooth Dog Clutch that is controlled by the Apron reverse Handle. The intermediate Gear provides a means to disconnect the Gear box and Apron Feeds from the Spindle when power feed
is not required. The Intermediate Gear stays in mesh with the Spindle Gear and the Sleeve Gear because of the direction of rotation
and a very slight taper on the Intermediate Gear Stud. No detent is required to hold the gear in engagement or disengagement.
I just returned from the blueprint company where I made a copy of the 1903 drawing of this part for a customer. The drawing was discarded
in 1913, during redesign work on the Intermediate Gear for the prototype lathe featuring the new Double Walled Apron. The customer has
a 1911, 12 inch Cone Head, that is missing the Intermediate Gear, so next week I will be making a Gear, Bushing, Washer and Screw for
him.
Hendeyman