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Application filed by Harry Gamwell, Samuel Thompson JohnfiledCriticalHarry Gamwell
Publication of CH69238ApublicationCriticalpatent/CH69238A/en
On calculating machines with setting disks with adjustable teeth, a device for blocking the setting means used to set the adjustable teeth with respect to the setting disks
Device for locking the drive crank on calculating machines in the event of inaccurate setting of the teeth of a drive pulley with a variable number of teeth