GB559821A - Improvements in sheet feeding apparatus - Google Patents

Abstract

559,821. Feeding sheets. KAUFFELD, T. J. Sept. 2, 1942, No. 12408. Convention date, Sept. 16, 1941. [Class 100 (i)] In an overlapping stream feed the sheets are fed from a pile P by means of friction rollers 45 arranged near the rear of a pile and acting to buckle the top sheets in succession by the aid of pile stops 80 mounted on an oscillating shaft 82 which moves away from the pile to permit the buckled sheet to straighten out and move towards conveyer bands 15 at the same time as the rear edge of the sheet reaches the rollers 45. The separated sheet S moves forward along with the preceding sheets S', S<SP>2</SP> the front edges of the sheets being separated by the distance between the rear edge of the pile and the tangential points of the rollers 45. The smoothing out of the separated sheets is assisted by continuously or intermittently directed blasts of air 55 from nozzles in a pipe 51. The rear edges of the sheets are held in place by presser devices 48. The rollers 45 are mounted in brackets 40 adjustable upon a pivoted bar 20 formed with an arm 23 which is acted upon by an adjustable spring 34 to counterbalance the weight of the supporting member 20 and feeding mechanism carried thereby which act to press the rollers 45 upon the pile. The driving-shaft 12 operates the various parts in synchronism including a cam shaft 72 for operating the stops 80, and also bevel gearing for driving the shaft 46 of the rollers 45, the driving-gear for the rollers 45 including a gear which is concentric with the pivot about which the bar 20 can pivot.