US 12,330,439 B2
Leveler device of signatures on movable saddle of bookbinding sewing machine with gas jet
Marco Madaschi, Torre de' Roveri (IT); and Paolo Alberto Cornolti, Villa di Serio (IT)
Assigned to Meccanotecnica S.p.A., Gazzaniga (IT)
Appl. No. 17/788,881
Filed by Meccanotecnica S.p.A., Gazzaniga (IT)
PCT Filed Dec. 24, 2020, PCT No. PCT/EP2020/087861
§ 371(c)(1), (2) Date Jun. 24, 2022,
PCT Pub. No. WO2021/130362, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 102019000025627 (IT), filed on Dec. 27, 2019.
Prior Publication US 2023/0024367 A1, Jan. 26, 2023
Int. Cl. B42B 2/02 (2006.01)
CPC B42B 2/02 (2013.01) 20 Claims
OG exemplary drawing
 
1. A leveler device for use in a bookbinding sewing machine, comprising one or more needles and one or more crochets for sewing signatures into book blocks with one or more sewing threads and a movable saddle for loading each of the signatures to be sewn, defining a current signature the leveler device for levelling the current signature onto the movable saddle, wherein the leveler device comprises:
at least one inlet for receiving a jet of a gas,
one or more nozzles for ejecting the gas towards corresponding free ends of the sewing threads projecting from the current signature when the current signature is a last signature of the signatures of a completed one of the book blocks, and
at least one channel for conveying the gas extending from the at least one inlet to the one or more nozzles.