A recreation of the instruction sheet that accompanied
Lock-Stoppers mailed in cardboard cylinders:
 

HAYNER PATENT LOCK STOPPER

This ingenious Lock Stopper is a safeguard against servants, children or
anyone else tampering with your whiskey - as the bottle cannot be opened
without a knowledge of the combination.

Fully protected by patents owned and controlled exclusively by              
The Hayner Distilling Company.  Any infringements will be prosecuted.

INSTRUCTIONS

HOW TO OPERATE COMBINATION LOCK STOPPER

  1. Moisten the cork part in hot water so
    it will soften and work easily in and out
    of the bottle.
     
  2. See that the Lock-Stopper is unlocked -
    which can be determined by pressing
    in the two dogs which extend out just
    above the cork.  If the dogs will not
    press in, then the stopper is locked --
    and can be unlocked by following the in-
    structions "How to unlock the Stopper"
    given below.
  1. When the Lock-Stopper is unlocked -- press it into the neck of the
    Lock-Stopper Decanter until the dogs set into the groove inside the
    neck of the bottle.  Then turn the combination a few times and the
    bottle is locked.

NOTICE -- This Lock-Stopper can only
be used in our Lock-Stopper Decanter.   

  1. TO UNLOCK THE STOPPER.  Set pointer at 12, then turn en-
    tirely around to the LEFT one or more times stopping at ....4½.... 
    Then turn to the RIGHT back to ....9½....  Catch the Stopper
    BY
    THE OUTSIDE RIM and lift it out of the bottle.

DO NOT FORGET THE COMBINATION.

Write it down somewhere so you can refer to it if you should forget it.

THE HAYNER DISTILLING COMPANY.
DISTILLERS.
Dayton, O. St. Louis, Mo. St. Paul, Minn. Jacksonville, Fla.  New Orleans, La.
Distillery, Troy, Ohio.