Clark Equipment Compnay

Bobbylee Pease

Clark C Simpson

A hydraulic cylinder assembly in which cylinders are separated into two coaxial cylindrical portions sealed hydraulically one from the other, one having an extensible piston therein and the other being extensible together with the extensible piston on a fixed supporting piston. In an exemplary embodiment two such cylinder assemblies are mounted to operate in opposite directions within various predetermined fixed limits of extension to control the extension of a telescopic spreader frame for handling containers to selected ones of such fixed limits. For different combinations of such fixed limits of extension in one or more selected installations, different length spacers are used at the time of assembly in the cylinder assemblies to establish various fixed and predetermined intermediate extensions between full extension and full retraction thereof. A hydraulic control system for the cylinder assemblies includes first and second valves and conduits variously connecting the valves to both cylinder portions of both cylinder assemblies.

Cylinder and piston assembly

A spreader frame for van carriers for engaging, lifting and transporting freight containers which is chain supported at both ends from a carrier mounted lifting arch and which is connected to the carrier frame by a guide beam at one end only. At the said one end there is connected between the guide beam and the spreader frame three hydraulic cylinders, one of which extends generally transversely of the frame for side shifting it on the guide beam, and the other two of which extend generally longitudinally at opposite sides of the frame for skewing it on the guide beam.

Growing community of inventors

Battle Creek, MI, United States of America

Bobbylee Pease