|Year of production|
Produced between 1922 and 1928, this is the renewed edition of the model 3 and also first to be used in Italy in the city of Chiavenna at the “Brevetti Van Berkel Italia” factory.
The machine has the carriage running on a joint pin and the solid flywheel movement. With the pawl mechanism, the upper carriage takes the worm screw directly to the regulation clock.
The clamp, to fix the product on two stud bolts (back and front) has a fast sliding.
The sharpener has a new movement and shape due to its upper casing and the front cover.
The blade, 370mm of diameter, is set on the arch abutment giving more depth and space to the face made of white opaline glass, which is covered by a black metal case.