Abstract: A feeder for paperboard blanks includes a transport, vertical relationship changing structure to alternately provide active and passive positions for the transport, a suction device, and a transmission with input and output shafts operatively connected so that the output shaft undergoes controlled acceleration during an initial portion of each revolution of the input shaft, whereby the transport engages and grips a blank by static friction and moves accelerates that blank to nip rolls without slippage occurring and so that each blank enters the nip rolls in register whereupon the blank is disengaged from the transport.

Abstract: A feeder for paperboard blanks includes a transport, vertical relationship changing structure to alternately provide action and passive positions for the transport, a suction device, and a transmission with input and output shafts operatively connected so that the output shaft undergoes controlled acceleration during an initial portion of each revolution of the input shaft and is stationary during a last portion of each revolution of the input shaft, whereby the transport engages and grips a blank by static friction and moves and accelerates that blank to nip rolls without slippage occurring and so that each blank enters the nip rolls in register whereupon the blank is disengaged from the transport.

Abstract: A feeder for paperboard blanks includes a transport, vertical relationship changing structure to alternately provide active and passive positions for the transport a suction device, and a transmission with input and output shafts operatively connected so that the output shaft undergoes controlled acceleration during an initial portion of each revolution of the input shaft and is stationary during a last portion of each revolution of the input shaft, whereby the transport engages and grips a blank by static friction and moves and accelerates that blank to nip rolls without slippage occurring and so that each blank enters the nip rolls in register whereupon the blank is disengaged from the transport.

Abstract: A feeder for paperboard blanks includes feed wheels, a vacuum box, a camming assembly to change the vertical relationship between the feed wheels and the top of the vacuum box, and an indexing transmission.

Abstract: Apparatus for folding paperboard blanks, fed one by one in timed sequence into said apparatus and transported through it, includes helical blank contacting means rotatable in time with the transport means about a longitudinal axis extending generally in the direction of travel.

Abstract: A rotary feeder for paperboard blanks includes suction means, partially relieved feed wheels and a transmission with input and output shafts operatively connected so that the output shaft undergoes a controlled acceleration during an initial portion of each revolution of the input shaft and is stationary during a last portion of each revolution of the input shaft, whereby the wheels engage and grip a blank by means of static friction and move and accelerate that blank to the nip rolls without slippage occurring and so that each blank enters the nip rolls in register.

Abstract: A machine for handling corrugated paper blanks and the like is shown having an adjustable back stop means to cooperate with infeed means to regulate the flow of blanks going into the machine to be processed to ensure proper feeding of the blanks serially to the gate to be passed onwardly. The adjustable infeed device is positioned before the infeed gate to control the dropping of the blanks onto the feed table, in a manner to continuously maintain a desired limited number of blanks on the table of the machine in position between the back stop and a front wall means in front of the gate as the blanks are fed one by one from the bottom of the pile through the gate.