National Cash Register Class 500 User Manual - page 7
Page 7
The Key Release Lever
This device is placed below the first row of keys and is to release any of the keys in case they
have been pressed by mistake. This lever cannot be operated unless the operating handle is in
the home position.
Drawer Release Lever
(On single-drawer registers only.)
This device is located on right of register under the printer hood, and releases the drawer by
pressing down slightly on the end of the lever.
Credit System Keys
Standard registers are equipped with "Charge" "Received-on-Account" and "Paid-Out" keys.
Each of these keys operates a special counter which adds one each time a special key is pressed
and the handle turned.- These counters may be set to zero by unlocking and raising lid and
turning from you the small wheels at the right of the counter until the adding wheels show
zero.
Standard registers are so constructed that amounts registered in connection with the "Charge"
and "Paid-Out" keys are not added into the total adding counters -but complete records of such
transactions are recorded on the detail strip and check.
On some registers it is necessary to set the lever and press a key in the left row before the
handle can be turned.
A printed check will be issued, the bell will ring, the cash drawer will open, the indicators will
show the amount, which will be added on the counter wheels and printed on the detail strip.
Clerks' and Customers' Special Counters
These counters show the number of registrations made on each reel counter and are located
below the registering keys. The customer counter shows the total number of registrations
made. To reset these counters, unlock Lock No. 6 in front of hood which opens a slide over
same and over resetting shaft in right end of hood, place the resetting wrench on shaft through
the opening and turn from you until the wrench comes to a stop and the adding wheels show
zero.