Pretty much what I found. It could be the thread on the cone is bottomed out.
I will take pix when next I remove the apron in a week or so.
Must clear a space to work first
Larry
On Friday, January 15, 2021, 11:25:47 AM EST, Dennis Turk <dennis.turk2@...> wrote:
OK Larry lets see if I can explain this apron? gear box.? The cone clutch rides on two pins that are pressed into the worm gear.? The inside of the cone has a thread and when you rotate the handle at the front of the apron it draws the cone into the taper of the worm gear.? Once the tapered cone is drawn into the worm gear the hole assembly then rotates driving the gear that engages the pinion gear that engages the rack gear under the bed.? I was looking through my photos but don't seam to have a picture of the clutch dismantled only of it assembled.? When you take the nut off the hand wheel at the front it is keyed to the shaft.? Once the handle is removed and the key removed you can draw the worm gear and clutch assembly out of the apron.? Least that is what I am remembering.? Been a few? years since I did all this work on the Daltons.
On Friday, January 15, 2021, 05:54:08 AM PST, L Leonard via groups.io <metalmechanic@...> wrote:
Well, then, I have a problem.? When fully engaged the carriage does not move under power but does by hand.
the assembly seems to be bottomed out as it cannot be disengaged by hand.? there was no spring to apply back pressure to the clutch.? Is a puzzlement.
Larry
On Thursday, January 14, 2021, 9:56:27 PM EST, Dennis Turk <dennis.turk2@...> wrote:
Hi Larry
OK yes your Lot 5 has power longitudinal feed via the keyway in the lead screw that drives the worm? that drives the worm gear that houses the cone clutch.? The knob on the front of the apron tightens the cone clutch into the tapered bore of the worm gear.? All very simple and lot like South Bend Logan and other lathes of the day.
Dennis
On Thursday, January 14, 2021, 04:19:20 PM PST, L Leonard via groups.io <metalmechanic@...> wrote:
Greetings I removed? the lead screw from my lot 5 today for a good cleaning and , while I was at it, the apron as well. After removing 100 yrs of gunk I found................ no wear to speak of! no scoring, worn gear teeth, or sloppy half nut. I did find 2 small cracks in the worm gear carrier at the 12? o'clock position at its weakest point. I also found a cone clutch.? Is this used for turning?? If so, how does it work as I see no way to engage it. Anyway, the old girl is back together cutting threads like a champ. Any help appreciated. Be well Larry
