Bead breaking device for tractor tires

A device comprising a manually operated hydraulic pump having been modified to break the circumferential bead of a pneumatic tire from a wheel rim, said hydraulic pump including a pump unit having a horizontally disposed cylinder extending therefrom, said cylinder being provided with an internal piston rod, said pump unit being provided with a pivotal actuating member whereby pivoting said actuating member upwardly and downwardly urges said piston rod outwardly from said cylinder, and a means for releasing hydraulic pressure from said pump unit;

• said cylinder being provided with threads on the end opposite said pump unit, a barrel for threadedly receiving the threaded end of said cylinder, a ram portion being affixed to the end of said piston rod, said barrel including a stationary horseshoe-shaped plate surrounding said ram, said stationary plate and said ram constituting a wedge capable of being inserted between the interior of said wheel rim and a side wall of said pneumatic tire, and means for locking said device onto said wheel rim;
• whereby urging said piston rod outwardly from said cylinder presses said ram portion of said wedge into said side wall of said tire thereby breaking its bead;
• wherein said means for locking said device comprises a vertically disposed bar extending downwardly from said barrel and being provided with a horizontally disposed adjustment slot, a locking arm being pivotally mounted on said bar by means of a bolt passing through said slot, and a tightening screw mounted on said locking arm and having one end engagable with said barrel;
• whereby said arm is pivoted to engage said wheel rim and said screw is tightened against said barrel to secure said device on said wheel rim.