Posted a picture of my old Excel Power Hacksaw in Shop Talk thread What did you do in the shop today?  by plastikosmd https://simpletractors.com/forums/topic/60372-what-did-you-do-in-the-shop-today/?page=12

Ken (maxwood) responded with a picture of his:

Ken and I corresponded back and forth and he sent me information that the design was originally Covel  & sold by Sears and later bought by Atlas. He also directed me to vintage machinery website that has a ton of information on old machines and this one for a parts book http://vintagemachinery.org/pubs/51/3452.pdf   and then a link to Sears Parts Direct for parts. I was going to make the lever plates but Sears Parts Direct sold the correct ones 

As shown, mine are worn out and not ratcheting as deigned.  Not a big job to replace but I never expected to find the correct parts out there. For a total of $22 & change I received the new parts and know where to get more if needed.

Before picture with my old worn clips

And after picture with new lever plates installed. 

After

Now to get the levers adjusted. A big thank you to Ken Stange (maxwood)