My "New" Yoder

[ralph]

Tool Gloat

I never thought I'd buy a Yoder, but I found one in Columbus, Oh that I just had to have. It appears to be a conventional Yoder with some kind of a shaft and gear driven rotary table to move the parts around.

The table itself has an alternate shaft and gear driven attachment that move the parts in and out as well as turning them. The yoder itself is driven by over head pulleys.

http://www.metalmeet.com/photopost/data/3204/medium/46lside.jpg

http://www.metalmeet.com/photopost/data/3204/medium/46front.jpg

Anyone ever seen a yoder equipped like this one?

One other thing, The yoder itself is only 10" tall and the overhead shafting is driven by an open framed .25hp Westinghouse motor. The detail on this little model is unbelievable. Everything works right down to the smallest mechanisms, even the belt shifter. The dies are held in place by machined dovetails less than a 1/4 in wide! It is quite a piece of machining art. I would guess by the motor that it is from the 19 teens, or a little earlier. Here is a perspective shot

http://www.metalmeet.com/photopost/data/3204/medium/46reality.jpg
(http://www.metalmeet.com/photopost/data/3204/46reality-med.jpg?5193)

[Doug98105]

Basically, that's an unusual version of a dial type punch press.

Does it hit more than once per index of the table? The more conventional dial type machines index per hit. Since this one has the ram spring makes you wonder what it's function is, why not use a regular punch press? Maybe the operator keeps hitting until he's satisfied with the part then indexes to the next station.

I bet Yoder could tell you what it was meant to do.

Yoder made and still makes a variety of machines. At Boeing Surplus awhile back I spotted a large crate marked Yoder parts. Thinking I'd discovered a mother lode of Yoder power hammer parts I got real interested. Turned out it was full of rolls for a Yoder roll forming machine.

Doug

[Jim Garvey]

I have bought and re-sold several Yoder hammers. I think from the photos you have posted that you have a punch press. The rotary table is to load and unload parts. The construction of your machine is similiar to a Yoder. A Yoder has a ram (slide) and a connecting rod (pitman) that are similiar to a punch press. The connecting rod is driven by a motor and shaft. The shaft is parallel to the floor. Most hammers are either a wall mount or free standing. I would suggest that you visit a local shop that has a Yoder and familiarize your self with one.