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AssigneeJacobsen Manufacturing Company
InventorsGlenn Richard Hubbard, Harold John Jacoby, Frank Allen Ecker, Donald Gene Haffner, Anthony Joseph Saiia
Estimating the term…
A hydraulic system for controlling a gang of lawn mowers including a hydraulic pump and a multi-section valve and hydraulic motors driving the mowers. Hydraulic cylinders are also included in the system, for raising and lowering the mowers, and a check valve is connected with the cylinders for controlling the lowering of the mowers. The main valve is arranged with a plurality of spools which control the aforementioned functions and with the spools being set by means of a single handle so that the operator can perform the aforementioned functions through maneuvering the single handle for each set of hydraulic motors and cylinders. A hydraulic flow restrictor is included in the system for reversing the motors at a speed slower than the forward motor speed, for a slower reverse rotation of the mowers, such as for back-lapping of the mowers.
A hydraulic system for controlling a gang of lawn mowers, comprising a hydraulic pump, a single-bodid hydraulic valve having a plurality of sections with each of said sections having a separate hydraulic inlet hydraulically connected with said pump, each of said valve sections having a first and a second hydraulic flow outlet, a plurality of lawn mowers, a plurality of hydraulic motors respectively hydraulically connected with said first valve outlets and operatively associated with said mowers for driving said mowers, a plurality of hydraulic cylinders respectively hydraulically connected with said second valve outlets and operatively associated with said mowers for raising and lowering said mowers, a valve spool shiftably disposed in each of said sections and with each of said spools having two hydraulic flow passageways respectively alignable with the first and second said valve outlets for passing hydraulic fluid to said valve outlets, and a handle operatively connected with each of said spools for selective shifting of said spools and consequent passing of hydraulic fluid to either of the two said valve outlets, for either powering said mowers or raising and lowering said mowers.
Dependencies are inferred from the claim text.