Firing mechanism for a revolver

In a revolver having a frame, a cylinder rotatably mounted on the frame, a hammer pivotally mounted on the frame rearwardly of the cylinder, a trigger pivotally mounted on the frame below and forwardly of the hammer, and a main spring urging the hammer and the trigger to their respective at-rest positions, said hammer and said trigger having mutually engageable cam surfaces that cooperate to cause the hammer to be rotated from its at-rest position to its ready-to-fire position when the trigger is rotated from its at-rest position to its ready-to-fire position and to cause the trigger to be rotated from its at-rest position to its ready-to-fire position when the hammer is rotated from its at-rest position to its ready-to-fire position, the improvement which comprises

• a generally vertically disposed main spring lever positioned rearwardly of the hammer and the trigger the lower end of which lever is pivotally mounted on the frame and the upper end of which lever is operatively connected to the pivotally mounted hammer at a point thereon below the pivot axis thereof, and
• a generally horizontally disposed main spring positioned between the trigger and the main spring lever the forward end of which spring is operatively connected to the pivotally mounted trigger at a point thereon below the pivot axis thereof and the rearward end of which spring is operatively connected to the main spring lever at a point intermediate the lower and upper ends of said lever.