Found u-tube videos of odd record changers:

Try these videos I found of unusual old record changers

Dual 1004, 7" records
http://www.youtube.com/watch?v=odApho-ZXR8

Dual 1006, 3 sizes
http://www.youtube.com/watch?v=FZjj7_CMDIQ

Dual 1004, 10" record
http://www.youtube.com/watch?v=r9hW7dMWqjs

Miracord 90, 12" record
http://www.youtube.com/watch?v=DXKWff4WbVc

Note the unusual ways they find the sizes of the records.

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That Miracord 90 would be fine if the record only had one side!

Here's a Duall 1006 selecting and playing a 78. Note how it runs at 33 while it's selecting the record and then it clicks into 78 when the needle sets down.
http://www.youtube.com/watch?v=GvFqN7uVP3g

And here's my 1968 Maggie doing its thing. I have the change cycle idler riding on the 33 step of the motor so it goes nice and easy.
http://www.youtube.com/watch?v=qG52p-BbFhw

Here is the Dual 1006, so you can see how it works.

http://www.youtube.com/watch?v=uCmi4Uj1dzI

Here's the interesting Dual 1008. The drop feeler gets the record size with the changer spindle in, but the little roller on the bottom of the feeler rises to get the size for a single record using the short spindle.

http://www.youtube.com/watch?v=ZAGws06z ... re=related

Here is a Philco M26. Watch the spindle when the record drops.

http://www.youtube.com/watch?v=RRJqGBn- ... re=related

I had to do this post twice, because you timed me out the first time while I was hunting the files.

That Philco video is even more unusual.

The guy who made it tells me he added the automatic shutoff to the unit. Every one of those Philco changers I have seen (including the one I used to own) repeated the last record.

There's more on the Philco changers:

- That one I identified as an M-26 is really an M-38.

- Another YouTube guy has a real M-26 that does have the factory-supplied automatic arm return after the last record. It does not switch off the power.

Regarding these Philco Changers:

The earliest version of these that I find is the M-22. Mine came out of a 1951 model. This one repeats the last record, and has the "tilt" cartridge. There is a lever sticking out of the top of the tone arm above the needle (cartridge). It is part of the cartridge. Tilt it forward for 78 rpm or back for 33-45 stylus. The controls for reject and speed do not have the arrows of the later M-38 and M-26.

The M-38 (which was shown above) is very similar to the M-22, except that it has a more conventional Ronette flipover cartridge (with conventional flipover lever at the tip of the arm). The one that I have came from a radio/phono combo from 1956 (not a high fidelity model). I assume that this was a cheaper cartridge for the lower end machines, since Philco was concurrently still using the tilt cartridge in Hi Fi models.

The M-26 was used in the high fidelity models - about 1954 - 56. (Mine from a 1955 model) It has some extra mechanisms under the record shelf that allow it to senses when there are no more records to play. When the device that presses the records down on the shelf drops fully, it senses that there are no more records, and returns but does not shut off. This changer also uses the tilt cartridge.

I came across these units while gathering parts to restore an old 1956 hi fi from my childhood. It used the M-26. These changers are almost always a green/gold color, with black record shelf, black controls and black tone arm. The M-26 from my childhood (lost) had a brick red base and all parts mentioned as black above were white. I have never been able to find one like this. Oh well - keep looking on ebay!

Craig

I had an M-22, and almost bought an M-24.

My M-22 was all green, and had a separate on-off switch not connected to the MAN-AUT-REJ knob. The M-24 has these functions combined on the same knob, as does M-26. The M-24 I almost bought was tan, with black knobs, shelf, and tonearm.

Philco switched to buying record changers instead of making them, in the late 1950s. The Philco M-39 is identical to the Webcor 152.