Accession Number : ADD013042

Title :   Load-Unload Device - Limit Overload Sensing Device.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Otto,Stanislaus J ; Doty,Verle L

Report Date : 05 Feb 1985

Pagination or Media Count : 8

Abstract : In this patent a load-unload device is disclosed for use in a vertical conveyor system having means for sensing a jam condition between a downward moving conveyor tray and an article that has failed to remove from the load-unload device. The device includes linkage means for creating an over-center locked condition automatically releasable at a preset force. A spring receives the load due to a jam and develops the force necessary to unlock the linkage and allow the platform to move to a position for relieving the overload. A limit switch opens the conveyor drive motor down circuit as the platform moves. Provision is made for presetting a limited amount of platform movement without shutting off the conveyor.

Descriptors :   *PATENTS, *DETECTION, *OVERLOAD, *CONVEYORS, *LOADERS, PLATFORMS, VERTICAL ORIENTATION, LOADING(HANDLING)

Subject Categories : Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE