Original Publication Date: 1964-May-01
Included in the Prior Art Database: 2005-Mar-07
Chaffe, MR: AUTHOR [+2]
AbstractThe high speed rotary stapler staples a moving web of forms. A spring driven hammer drives staples through the web on each rotation.
The high speed rotary stapler staples a moving web of forms. A spring driven hammer drives staples through the web on each rotation.
The stapler has rotatable disk 10 rotating with respect to stationary cams 18 having cam races 19. Disk 10 carries housing 15, which houses and guides a radially reciprocating driving slide 17 which has ears 27 attached to them. Ears 27 follow races 19 of cams 18 so that, when disk 10 rotates, slide 17 and staple forming slide 16 which is attached to it reciprocate radially in and out.
During the first 90 degrees of clockwise rotation of disk 10, slide 17 is moved to its innermost position. As slide 37 thus moves radially inward, pin 28a, attached to it, engages a rocker link 29. This pivots about pin 32 and moves anvil slide 22 with respect to housing 15. Subsequent rotation of disk 10 causes slide 16 to move radially outward, thus cutting a length of wire 50 and forming it into a staple over anvil 11. When slide 16 reaches its outermost position, it is released by pawl 52 engaging cam 54. Continued outward motion of slide 17 eventually engages rocker link 29 on its lower edge 26 and pivots anvil slide 22 out of the path of slide 17.
Thus, the staple, now held in slide 16, is ready to be delivered to moving web 60.
Just before disk 10 reaches the position shown, cocking cam 35, riding ahead of slide 17, comes into contact with spring loaded hammer 36 and moves it against bias of spring 37 into a spring loaded positio...