These pins have a screw coming in from the top keeping them in place.These slider pins move in sideways to hold in the adder. It is held into the machine by 2 slicing pins on either side down deep in the machine.The adder is the self contained unit in the center of the register which shows dollars and cents. This is why it is often removed or missing from registers. Frequently the counter mechanism in total adder machines is the culprit for cash register jams.This is very advanced but may be the last hope: This may allow the register to rotate backwards and allows the keys to come back up. Try lifting it up so it no longer is engaging the gear. This is the anti-reversing catch that does not allow the gears to rotate backwards. This catch should be held on by one screw and have a small spring on it. Over to the right inside the machine is a catch lever that is engaged to a gear’s teeth.Take a look inside if your machine is in really bad shape and full of rust or other stuff there may be no hope but try this.Lift up the lid and remove the dust cover (the lid over the counters) by taking out the 2 screws and lifting it out.Ok, if 2 keys are pressed or one key just won’t move, you will need to open the machine up. Don’t do too much here before you try steps 3 and 4.ģ.You maybe able to remove a couple of pieces and see if it will let go. No specifics here but just see what you can find.Sometimes the printer gets parts out of place and causes a jam. open up the cover and look to see if any parts are out of place or preventing movement.If your machine has a printer on the right side It may get stuck on the down stroke or on the way back up.Ģ. Remember it must go all the way down and then come back up.Do not press super hard just try and work it along. Remember this is nearly 90 years old and may just be sticky.grab hold of that key between the thumb and forefinger and shake and press it hard.Here are the steps to take with this type of machine. Ok, very frequently 2 keys are pressed down at the same time or one key is stuck partway down. But here is a page dedicated to On NCR Model 135 principle machinesįirst, the 300 class machines (see page 4 on clarification on what principle machine you have).the 300 class total adders like the candy store 313 or the wider 332 Dolphin style machines.So I am going to convey some of the very basic info I can give in this form. Some of the most common Email I get asks for advice on unjamming a cash register where the keys are stuck or the crank won’t move. Basic info on unjamming your National Cash Register
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