Model: Berkel 8H/21 3rd series
Manufacturing time: 1945 – 1965 about
Place of origin: Netherlands- Rotterdam
Slicing blade diameter: 370 mm
Dimensions: width 80cm – depth 82cm – height 66cm
Note: Old style and modern pedestals are available
The Berkel 8H/21 3rd series replaces the mod. 8H-21 2nd series.
The slicing synchronism of all series of this model is similar to the previous ones (models 5 – 7), but the components have been so improved that they will be used for the whole production till the 60s; in fact the endless screw and the comb pass to have a conical groove instead of the straight groove.
Particularly the comb doubles the contact surface, it is no longer fixed on the fixing vice but on a telescopic shifting stage. It is fitted in the endless screw with a very high connection load. All that, together with the conical connection, offsets the comb wear allowing the utmost efficiency of the machine and its life.
On the staging a pivot comes out where the vice is fitted and blocked.
The endless screw and the staging are capped by a shaped cover and no longer at sight as for the previous models
The mechanism is the same of models 8H-21 of 1st and 2nd series, while the sharpener is different: it is smaller (the same of mod.9H). Besides the cover, over the cart shifting hub, it is oval instead of being round.
The closed and smooth flywheel puts a gearing system located under the base into action and causes the motion both of the blade, by means of a chain, and of the shifting cart, by means of two connecting rods.
Close to the blade the shifting cart runs inside a hub capped by an oval guard. While in the opposite side the cart leans on a square rod by means of a bearinged wheel. That is different from the model 8H-21 of 1st series where the cart shifts by a slot inside a square painted rod. The two shifting guides are supported by four small columns (two for each part) fixed on the base.
The slice adjustment clock is fixed on the base of the machine and puts a bill shaped lever into action and is on the same axis of the cog-wheel located on the cart, that puts the endless screw into action where is inserted the telescopic staging supporting the comb. The staging is hitched to the vice and produces the slicing movement. A crank connected to the cog-wheel, moved by hand on the right or left, shifts the vice consequently as you like.
The hub supporting the blade is fixed to the shoulder, which is flat outside with a wing shaped arch. This allows to lengthen an opal glass top tray. So you can manage more laying surface.
The sharpener is inside a painted cap; a lever acts on a cam moving the two sharpening grindstones.