Old Brown & Sharpe 10" dividing head

Discussion in 'MACHINE ACCESSORIES' started by OldMachinist, Nov 2, 2012.

  1. OldMachinist

    OldMachinist Active Members Staff Member Active Member Moderator

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    I picked up this universal dividing head last week. I torn it down and cleaned out the decades of grime that was inside it. Put it back together, adjusted the worm and spindle properly now it spins smooth as silk, with no backlash.
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    The quick index plate on the spindle is cracked and has been somewhat repaired in the past. I'm going to try brazing the cracks and see how it looks. If it doesn't work out I'll make a new one.

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    It originally had little pop up oilers, two were missing and I damaged the other one knocking it out. So I'm going make new ones.

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    I need to find a couple of acessories for it.
    Tailstock
    #10 Brown & Sharpe dead center
    Chuck mounting plate 2 1/4"-4 1/2 threads per inch

    I pretty sure I'll have to make the chuck plate because I haven seen anything in that old spindle thread size in years. But if someone has one laying around let me know.
     
  2. 8ntsane

    8ntsane Active Members Active Member

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    Paul
    Nice score.
    I was looking at a universal dividing head this week. The thing has a bunch of change gears D-1 chuck mount, and all the goodies. Though, it appears loaded with all the optional parts, I think Id grow old trying to figure out how to use it. Still undecided yet.

    Just wondering, what yours set you back, if you dont mind me asking?

     
  3. OldMachinist

    OldMachinist Active Members Staff Member Active Member Moderator

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    I paid $200 for it with only the 2 index plates.

    If all you're planning on doing is some easy indexing you don't need all the change gears and arms. If you have a machine that you can gear it to the table lead screw then you could do spiral milling but like you said that will take some figuring out. I was just looking for something to make a occasional gear and this one came up in my price range.
     
  4. 8ntsane

    8ntsane Active Members Active Member

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  5. OldMachinist

    OldMachinist Active Members Staff Member Active Member Moderator

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    $550 is a good price for all of that if he has the 100 plus page manual that tells you how to use it.
     
  6. Hawkeye

    Hawkeye Active Members Active Member Supporter

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    Dividing heads are such a big deal that Shop Theory, the textbook for the Henry Ford Trade School devoted more content to it than to any other single topic. The site software doesn't like big files, so it's in five sections. Try to stay awake.

    View attachment Dividing Head Part 2.pdf
    View attachment Dividing Head Part 1.pdf
    View attachment Dividing Head Part 3.pdf
    View attachment Dividing Head Part 4.pdf
    View attachment Dividing Head Part 5.pdf

    You'll notice that the Attachment Manager decided to change the order of the files.
     
  7. bcall2043

    bcall2043 Active Members Active Member

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    That is a great set of books! I found a set in a used book store under "Automobiles". I guess the word "Ford" was all the store person understood.:lmao:

    Benny
    The Orphanage Never Closes
     
  8. 8ntsane

    8ntsane Active Members Active Member

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    I know, I thought it wasnt dirt cheap, but for the complete setup as in the pics, it wasnt to bad. A few things are stopping me though. The first thing, he claims it isnt a US built setup. It is apparently made in Tiawan. The second thing is, he has no manual for the dividing head.


    With out a manual, how do I really know if its 100 percent complete as claimed. If the manual was available, I could atleast verfiy everthing is there. He cant give me any more infro other than where it was made, but not by whom. Kind of a bummer.

    What would you do? take a chance, or skip it. and keep looking else where?
     
  9. 4gsr

    4gsr Active Members Staff Member Active Member Supporter Moderator

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    I made a faceplate/chuck adapter plate for a B & S dividing head I had years ago. You have to counterbore and "blunt start" the thread for almost 3/8" in to get it to thread on the spindle properly. That 4-1/2 pitch thread was a trick to do on a 9" SBL! I no longer have the dividing head but still have or had the dead center that went to it. I'll do some looking and see if I can find it for you.
     
  10. OldMachinist

    OldMachinist Active Members Staff Member Active Member Moderator

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    It looks like everthing is there. There are 12 gears in the gear set which is the right number. I'd have to do some searching to see what the tooth counts should be. The info that Hawkeye posted should apply and there is info in the Machinery handbook.
    If I had the cash I'd go for it.
     
  11. Old Iron

    Old Iron Active Members Active Member Supporter

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    I have the same Brown & Sharpe Dividing Head. I had up loaded the manual in PDF to the old forum, Don't know why it didn't make it here.

    I don't know if I still have it because my shop computer got hit by lightning. I'll look on my CDs and see if I can fine it when I get time. Right now the shop is in a mess every thing on one side is setting in the middle.

    Paul
     
  12. 8ntsane

    8ntsane Active Members Active Member

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    Mike, and Paul

    Thanks for the infro
     
  13. OldMachinist

    OldMachinist Active Members Staff Member Active Member Moderator

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    Ken, please do let me know if you find the dead center.

    Paul, I have a copy of the manual that comes with the import reproductions of these heads. If you have a copy of the original B&S manual I'd like to see that.

    Thanks Guys.
     
  14. OldMachinist

    OldMachinist Active Members Staff Member Active Member Moderator

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    I did a little more work on the dividing head. I brazed the broken quick index plate.
    Bolted it down to a fixture plate to make sure all the index holes would line up after brazing.
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    Back side got machined flat so I could flip it over and braze the front side.

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    I made new #12-32 screws for the regular and quick index plates. You can't buy #12's in that pitch anymore. The ones for the quick index plate were oval heads and the other ones were flat heads.

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    Next part of the project will be to make the new pop up oilers.
     
    Last edited: Nov 6, 2012
  15. 4gsr

    4gsr Active Members Staff Member Active Member Supporter Moderator

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    Oldmachinist,

    I haven't had any luck finding that dead center. I have one more place to look, in the attic. It's still fairly warn down here in South Texas to climb up in the attic right now. First really cold cold front that makes it down here, I will get up there and look.
     
  16. OldMachinist

    OldMachinist Active Members Staff Member Active Member Moderator

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    Thanks Ken I understand not wanting to get up in a hot attic. I have several places I won't go until it cools down because of the heat.
    Don
     
  17. joesmith

    joesmith Active Members Active Member

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    Does the unit have B & S id plate somewhere? I have a universal I bought 5 or 6 yrs ago and have never used. It looks like yours and I have 3 plates and a 3 jaw chuck that each jaw adjusts like a 4 jaw.
    I do not have the bars and gears. I have found no identification anywhere. I also got a couple of extra index plates that don't fit this machine. If I live long enough I hope to use it some day.
    Joe
     
  18. OldMachinist

    OldMachinist Active Members Staff Member Active Member Moderator

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    No ID tag on mine either. Several manufacturers have made dividing heads of the same design but they used a different more common spindle thread like 2-1/4" X 8 TPI. Mine has a 4 1/2 TPI spindle thread that as far as I know only Brown & Sharpe used. Another thing is the little guard over the gears behind the index plate. The newer reproductions don't have this guard.
     
  19. joesmith

    joesmith Active Members Active Member

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    Don, Thanks for the info. I just checked mine. The headstock spindle is 2 1/4" x 4 1/2 tpi. It must be a B & S?? I also located 3 dividing plates and the tailstock and about a 7" 3 jaw independent chuck. I found an extra old tailstock but it is for a smaller index head. I also cound 2 extra dividing plates that are about 1/2" larger i diameter and 1/8" thicker. I don't have the headstock center either but do have one on the tailstock. I planned to make the center and some adapters to MT3 on my SB 10. I have had good luck making tapers using the taper attachment.

    i a j1 Bridgeport that I plan to mount this dividing head and a 8" rotary table. I use my 9x42 Enco for milling most of the time because it is in better condition and has dro's.

    I have been using a HF 8" rotary table that has an index plate mainly because it has a MT3 center. It has done fine for simple indexes(bolt heads, faceplate holes etc.) I have made mt3 adapters for several of my smaller chucks. I can make a bolt blank on the lathe and move it to the rt without resetting the work. Very convenient.

    BTW that is a nice job on the plate repair.

    Joe
     
  20. 4gsr

    4gsr Active Members Staff Member Active Member Supporter Moderator

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    Oldmachinist,

    Your dividing head is definitly a Brown & Sharpe. It is exact to mine in detail except for the index arm, which yours is off centered, mine was on center. Mine came off of a no. 2 mill that last patent date was around 1910-12. It worked perfect on my No. B & S mill from about the same time period. B & S made many variations of this dividing head over the years. All I can say yours is very old, probably produced before the 1930's if I had to guess. We got a cold front coming, I'll try to get up in the attic early next week and see what I can find.
     

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