what you are doing is great it is to bad that they don't make em game parts anymore. I have a CNC plasma cutter so I'm trying to make my own parts (relays. relay banks. stepper units score reels score motors) and many more parts from scratch.

this old technology is really cool. attached here is a pdf of the 1950s score reel patent so make sure you download it. I hope to be able to make them again
someday. I have been trying to model the design in a cad program and here it is the frame part. here is what it will kind of look like when it is finished

I. am also trying to design new electro-mechanical game using the parts I am designing

US2779200.pdf

score reel frame 1 v21.png

complete score reel asembled v18.png

Thank's mark. I really think the electro-mechanical games are a lot more fun than today's solid state games and that they should still make them today

I seem to have good patent interpretation skills this even works with old parts catalogs I'm also good at cad design so. I am trying to bring these good old parts back into production. I'm have been designing a new electro- mechanical game and I do not feel it is right to rob these old parts off games to make this one so I have decided to make my own parts from scratch

attached here are some other united mfg patents you might want

US2532205.pdf

US2599903.pdf

US2618719.pdf

US2707637.pdf

US2806701.pdf

here it my attempt to copy Durant's score reel design: this is the pawl that keeps the ratchet from turning backwards when the unit steps up

pic#1 is the bushing not yet crimped without pawl pic#2 pawl without bushing pic#3 bushing with pawl but not yet crimped.

pic#4 finished pawl crimped on to bushing

holding pawl bushing v6 (resized).png

holding pawl 1 v22 (resized).png

holding pawl bushing v65 (resized).png

holding pawl asembly v3 (resized).png

keeny did use Durant's score reel design for their 1952 domino bowler. keeny did not make their own score reels at first they used united's cardboard reels an then switched to Ballys plastic score reels in the late 1950s

here is the patent for your reels

US2945624.pdf