Clutch-controlled reversible or multispeed power-transmitting mechanism

Claim 1

IN POWER-TRANSMITTING MECHANISM, A NORMALLY DISENGAGED CLUTCH CAUSED TO BE ENGAGED BY APPLICATION OF HYDRAULIC PRESSURE, A DRIVE TO THE INPUT END OF SAID CLUTCH, A PINION MOUNTED FOR RECIPROCAL SLIDE MOTION ALONG A PRESCRIBED PATH WHICH IS ENDWISE TO ITS AXIS, A ROTARY SHAFT DRIVEN FROM THE OUTPUT END OF THE CLUTCH AND CONNECTED WITH THE PINION SO THAT THE PINION TURNS WITH THE SHAFT, TWO DRIVEN GEARS MOUNTED SO AS TO BE MESHED BY THE SLIDING PINION ONE AT ONE EXTREME AND THE OTHER AT THE OTHER EXTREME OF THE PINION''S SLIDE TRAVEL, AN ACTUATOR COMPRISING A CHEST AND A SHUTTLING SPOOL MOUNTED FOR SLIDE MOVEMENT IN THE CHEST, SAID CHEST HAVING A RESPECTIVE ADMISSION PORT FOR HYDRAULIC FLUID AT EACH OF ITS TWO ENDS AND A FLUID-EMISSION PORT AT THE CENTER, THE SPOOL BEING SO FORMED THAT THE PRESSURE OF ADMITTED FLUID THROUGH A SELECTED END PORT MOVES THE SPOOL TO THE OPPOSITE END OF ITS SHUTTLE TRAVEL AND UNCOVERS THE CENTER PORT UPON REACHING SAID LIMIT OF TRAVEL, AN OPERAIVE CONNECTION FROM THE SPOOL TO THE SLIDING PINION ACTING TO SLIDE THE PINION INTO MESH WITH THE DRIVEN GEARS, SELECTIVELY, ONE GEAR AS THE SPOOL MOVES TO ONE EXTREME OF ITS SHUTTLE TRAVEL AND THE OTHER GEAR AS THE SPOOL MOVES TO THE OPPOSITE EXTREME, A PRESSURE SOURCE OF HYDRAULIC SUPPLY, MEANS FOR FEEDING HYDRAULIC FLUID FROM SAID SUPPLY SOURCE TO EITHER END PORT OF THE CHEST, SELECTIVELY, WHILE DUMPING HYDRAULIC FLUID FROM THE OPPOSITE END PORT, A CONNECTION BETWEEN THE CENTER PORT OF THE CHEST AND THE CLUTCH SERVING TO SUPPLY PRESSURE FLUID TO THE CLUTCH AND RESPONSIVELY ENGAGE THE SAME WHEN THE SPOOL UNCOVERS SAID CENTER PORT, AND MEANS FOR DISSIPATING FLUID PRESSURE FROM THE CLUTCH WHEN SAID CENTER PORT IS COVERED.