unknown dividing head

bradinNC · Apr 8, 2016

I can't seem to find any markings on this. If I could get an idea what manufacturer built this it sure would help. Pretty sure its a taper 40. I've got the handle soaking in solvent.

bradinNC · Apr 10, 2016

Disk diameter is 6.75 inches.

I just spotted the stamped number in the top middle picture, but I don't think it's significant.

L Vanice · Apr 10, 2016

A good place to start is to identify the threads on the fasteners. Are they inch or metric? If inch, are they American or British? If metric, are they Japanese or European?

Larry

bradinNC · Apr 10, 2016

Thanks Larry.
Just went out to shop and checked a few items. The cover is held on by 5/16-18 screws.The 4 big bolt holes are 1/2-13 with 2
5/8" spacing. Keyway is 5/8 wide and 5/16 deep with 1/4-20 hole.

abarnsley · Apr 10, 2016

Crank handle is shaped exactly like a Cincinatti head.

Dividing plate has 11 rows like a Cincy, Does it have different pattern on backside?

Later Cinci standard DH heads, were 50 taper though..

So my guess a plain basic Cincy production head, without tilt feature.. Or clone of a Cincy...

Most other DH's used different plate hole pattern, and 3 plates instead of 1..

High number Cincy plates are out there though. A set of 3...

There is one on EPay right now.. I would say most likely Cinci...

mister honey · Apr 10, 2016

You have a Cincinnati dividing head that is specific to their Toolmaster miling machine product line.

Mike

bradinNC · Apr 10, 2016

Thank you Mike. That's a big help. I would like to find an exploded diagram of this dividing head.
thanks again, Brad.

mister honey · Apr 10, 2016

Here you are, Brad:

bradinNC · Apr 10, 2016

Thanks Mike, that is a HUGE help. Now I'm not in the dark! Brad

bradinNC · Apr 10, 2016

abarnsley said:
Does it have different pattern on backside?

It does have a pattern on the backside. 11 rows on front,back is partially obscured by a collar but looks to be 11 also.

abarnsley · Apr 11, 2016

Since mystery is solved.. Never seen a Toolmaster in my area, and it's assy's would be even rarer...

Standard Cincy dividing plates.

bradinNC · Apr 11, 2016

I brought this head home with another head (Ellis) and a tailstock. Looking at the diagram I just realized I have the matching tailstock to the toolmaster dividing head .So I'm a happy camper today! This was payback from a former co-worker I have helped out. His fiance wanted him to clean up around the house.

morsetaper2 · Apr 11, 2016

Looks to be similar one on ebay ....

Dividing Head Horizontal Vertical Milling 6" Buck 3 Jaw Adjus Tru Lathe Chuck | eBay

dian · Apr 12, 2016

abarnsley said:
Crank handle is shaped exactly like a Cincinatti head.

Dividing plate has 11 rows like a Cincy, Does it have different pattern on backside?

Later Cinci standard DH heads, were 50 taper though..

So my guess a plain basic Cincy production head, without tilt feature.. Or clone of a Cincy...

Most other DH's used different plate hole pattern, and 3 plates instead of 1..

High number Cincy plates are out there though. A set of 3...

There is one on EPay right now.. I would say most likely Cinci...

i cant find any plates. do you have a link? ebay?

abarnsley · Apr 12, 2016

High number plates are not common...

Pop up once in a while, and most sellers know exactly what they have...

Sometimes larger machine dealers will have a set at extra premium prices.

A set of blanks, and someone with a CNC mill, could make fairly quick work of a set..

I just finished making the quick index plate (mounts on DH spindle) for my older Cincy head.. Only 3 rows 24,30,36.. That was enough fun for me.. Spot drilled, then 5/32 drilled to depth... I would rather just push a big green button

...

The index plate holes are a little smaller ~.120

High number plates, were:

A side 30,48,69,91,99,117,129,147,171,177,189

B side 36,67,81,97,111,127,141,157,169,183,199

Next plate

C side 34,46,79,93,109,123,139,153,167,181,197

D side 32,44,77,89,107,121,137,151,163,179,193

Next plate

E side 26,42,73,87,103,119,133,149,161,175,191

F side 28,38,71,83,101,113,131,143,159,173,187

This gets you all numbers 2 to 200, all even numbers, and those divisible by 5 up to 400. Except 225,275,325,375. Cincinatti Publication #M-835

There was also a Cincy factory installed/optional DH attachment... The Wide Range Divider, gave you 2 to 400,000 and down to 6 second division capability with standard plate. Cincinatti Publication #M-972 This was for earlier heads like mine (#10 B&S spindle taper)

Good luck finding this.. It is out there, just uncommon...

dian · Apr 12, 2016

weird there is no 54.

Jaxian · Apr 12, 2016

abarnsley said:
There was also a Cincy factory installed/optional DH attachment... The Wide Range Divider, gave you 2 to 400,000 and down to 6 second division capability with standard plate. Cincinatti Publication #M-972 This was for earlier heads like mine (#10 B&S spindle taper)

Good luck finding this.. It is out there, just uncommon...

Too true. I have one and have only seen two others ever. One had the extra handles chopped off with a hacksaw :eek:

. Here is a picture of the Wide Range Divider portion from it after I cleaned it up. The rest looks like a normal Cincinnati DH. They actually recommend not getting the high number plates for it unless you absolutely need them as there becomes too many things to keep track of apparently without making mistakes.

Dian, as to the no 54 hole. Look at the inner ring of holes highest number, just under 100 hole on the outer ring. That should explain why no 54 hole ring on the dividing plate itself, it's direct.

abarnsley · Apr 13, 2016

Standard (non optional) plate has 54...

81 or 189 rings, will do 54 divisons on high number plates...

Wide range inner plate has it also.

dian · Apr 14, 2016

sure, but the wont give you 10 minutes.

bradinNC · Apr 21, 2016

Was cleaning up the rest of the booty and realized this is probably part of the tailstock and dividing head.

unknown dividing head

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