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Collectibles-General (Antiques)/Jennings slot machine


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I recently acquired a Jennings Club Chief Tic Tac Toe 10 cent machine.
I was wondering what the average number of spins are to hit tic tac toe. I probably played about 700 dimes, and haven't hit yet. the coins are filling up the jackpot.
The funny thing is, the machine pays out 18 dimes when the tic tac toe appears on the reels, but not across the middle line, where the normal play is. Is that normal?
does it sound like the jackpot is disabled?
Thanks again,

ANSWER: Nice machine Steve!

The payout slides on these old mechanical machines are only capable of paying out 20 coins on all mechanical slots. So tick-tack-toe anyway should pay 18 coins, I think it is 18 coins. So, to me sounds like all the tick-tack-toe combinations work on your machine except the jackpot combination, which lines up straight across the pay line. So when this happens does it still pay you the 20 coins like it should on the jackpot tick-tack-toe? I believe on this machine tick-tack-toe in any position pays 18 and on the center line it pays the jackpot of 20 coins Plus what is in the jackpot. It causes the JP to trip and dump its coins. So any other then the jackpot combination tick-tack-toe combinations will cause all payout slides to retract to payout position EXCEPT the top payout slide. The jackpot tic-tack-toe across the center line will pay 20 coins and cause all the slides to retract to payout position including the top slide, the top slide retracting is what will trip the jackpot. As the top slide goes into the machine for payout it allows the JP trip linkage to spring down and trigger the jackpot. So, on any tick-tact-toe payout except the center line you should see all the slides retract under the coin tube to the payout position except the top payout slide, on the jackpot: across the payout line, you should see all the slides retract under the coin tube. Try setting up those two combinations and see what the payout slide stack looks like, send photos if you like to:

Dime Machines: The new dimes are thinner, lighter, softer, bend and squish down easier, and ware down faster than the old silver dimes that this machine was made to use, so if sometimes you get shorted a dime or two or it gives you an extra one or two, don't worry about it, as this is common with dime machines and there is not much you can do about it unless you want to use all real old silver dimes in the machine. On some dime machines you can use a variance payout card, which will read: old card: three plums pay 14,
Variance card will read: three plum pays 13-to-15 which fix's the problems of being shorted or over paid a coin or two. This was Watlings idea and it was a way to put an end to miss pays.
Also remember the new dimes are very light so they may not slide all the way down to the payout cup, the next payout might push a stuck coin down to the cup so this can be confusing the count. Waxing the inside of the payout cup and payout shoot my help them slide down better, maybe.

Thank You
Rodger Knutson

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To test the jackpot, I need to manually turn the reels.
Remove the back cover, Put a dime in the machine and pull the handle. Once the reels start in motion stop the clock with your hand/fingers (This is the Fan looking thing that is spinning in the back) Once you stop the clock simply line up the reels that you want and release the clock. "Jackpot!"
Is this the correct way? I don't want to lose all the payout amounts.
I found 2 things obvious.
1. the top spring in the back left bottom corner of the mechanism was disconnected.

2. the piece in the front bottom left of the case has a metal bracket over it which it looks like it should be screwed to the side of the case, but just moves freely.
I also circled those 2 in red.
Is there any way to tighten the chain?
I thought I had the mechanism pretty clean, but the camera pictures proved me wrong!

Hi Steve,

YES, this is the correct way to test the payouts by stopping the fan on the clock after the reels kick off, line the reels up and then let the fan turn (slowly if possible) so you can be sure each wheel index's where you want it, once the third reel is locked, just let it go.

OK, you talk about the top spring: lower left of the back of the machine, is this the top spring going to the top payout slide, because if it is, this is maybe the only reason you have never had a jackpot. If the top slide has no spring it cannot retract, if it can't retract it cannot allow the jackpot to be tripped. Photos would help on that you asking about in front, can you send some? Yes on tightening the escalator chain, but be careful with that, don't get it tight, it needs to have just little slop to work cleanly. On the left chain sprocket looking at it from the back, under that chain sprocket "MOUNT", there are two screws holding that sprocket wheel and mount in place, loosen those a tad, and you can move the sprocket to the left tightening up the chain if the chain is not wore out and stretched too far. We have a super manual on these Jennings chiefs which can be extremely helpful but it has not been listed on our website manuals, if interested in that manual, drop me a note and I will tell you about it. Send any photo's to:

Thank You

Rodger Knutson

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Rodger Knutson


I am an expert on old coin operated machines, slot machines, trade stimulator's, jukeboxes, old arcade machines, etc. I have been identifying these for people who respond to my web site listed below, for a few years now. In almost all cases I am able to tell them about their old coin operated machines, the year, the value, and other general information about their machines. I do not know much about soda vending machines, coin banks, or scales, but I will try to help you with these if I can. Please email photo's to: My web site is at:


I bought my first slot machine, a .50 Cent Mills Black Cherry in 1969 and have been hooked from that time, I still have that Slot machine! Before that I found a open barrel full of old scraped jukebox wall boxes behind a restaurant, I wanted them all but never took a one of them. Anything that took a coin drove me nuts!

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Many, the Coinslot magazine, always juken, Coin Slot Journal, Slot Box Collector, and others that I don’t remember at this time.

Graduated from Ballard High School in 1969, went to Edison Technical Collage for a couple of years taking welding and metal fabrication, tig, mig, heliarc, also arc and gas welding and fabrication. Then Apprenticed under a slot machine technician who worked in the slot machine industry Reno Nevada, and set up bar poker progressive machines in the casino's, and repaired machine and did the repairs on slot machine circuit boards there. He also was involved in the 2 hand dealer's market and bought and sold machines at the casinos auctions for the secondary market, which includes selling used machine overseas. I learned a ton from this man; he always had the correct answers and took the time to teach me the business. My interest and knowledge in other and older coin operated machine is for the most part, self-taught. It's been my passion from back in 1968 and before, my thirst for knowledge about these machines has kept me more interested over the years, and keeps me searching for more information even today. I have meet and talked to book authors on these machines, attended hundreds of coin operated shows and auctions, and I stay with that to this very day.

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Take a look at my allexperts rating, and my guest book, links to these are at Also you can check my 100 percent rating on ebay, as I have been there with ebay from their day one, I am user coinslots at ebay. My other awards come from the very people that I deal with, I always make them happy, no matter what it takes, but they always are happy anyway as the countless thank you letters testify to me, so I know I am doing right, and the best I can. I have found so many hard to find parts for people, I hunt them down and don't stop until I find what is needed to get that customers machine running again and back to life, that is my main goal.

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