You might look at the White board. That looks like a White model 651 badged as a Kenmore, but the 651 is a zig zag automatic. White made all the Kenmores for Sears over a period of 30 years up into the 50's. Where do you put the cams? I have a Kenmore from the late 60's and it has a hatch on the top. Maybe the whole top of your machine opens up ??.
Rodney