Hacksaw having easily operated blade tension device

A hacksaw comprising:

• a frame including a beam having a front portion and a rear portion, a leg and a handle extended downward from said front portion and said rear portion of said beam respectively, said handle including an upper portion and a lower portion and including a chamber formed therein,
• an arm including a front portion pivotally secured to said lower portion of said handle, and including a rear portion having an oblong hole formed therein,
• a saw blade detachably coupled between said leg and said front portion of said arm,
• a lever including an upper portion pivotally secured to said upper portion of said handle with a pivot shaft, and including a lower portion, and including an upper and front portion,
• a tension rod including an upper portion pivotally secured to said upper and front portion of said lever with a pivot pole, and including a lower portion extended through said oblong hole of said arm and engageable with said rear portion of said arm, said tension rod being movable up and down relative to said handle by rotating said lever inward and outward of said chamber of said handle about said pivot shaft,
• a latch including a block slidably received in said chamber of said handle, and having an orifice formed therein for slidably receiving said tension rod, and
• means for biasing said latch to engage with said lever and to retain said lever in said chamber of said handle.