Antique Cast Iron ACME No. 6 1/2 Foot Pedal Book? Stapler Binder L-2 For Sale

Up for your consideration is an acme pedal activated book binding stapler #6 1/2 All parts in the move freely, but I cannot get the staple to crimp. It may just be a matter of some oil. Very rare and unusual item. Please note there is some one missing screw on the nickel plated, top piece and a broken off thread on the underside. Fortunately there’s some poking out to be able to get it out. Also where the spring attaches will need some modification it allows tension to stay on the staples, pushing them forward . Please refer to pictures.