|
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
This European badged Heidelberg Cylinder is probably the forerunner to the 'S' series, manufactured in the late 1950's, but so far I have been unable to discover the model number. (The 'S' series took a larger sheet size 540mm x 720mm.) The above model has three forme rollers and the normal pyramid stack. Heidelberg Cylinders utilised the single-revolution principle, but the bed drive was crank and rod connected to a pinion wheel geared directly into an upper and lower traverse rack Heidelberg modified this by incorporating a cam which acted on the bottom rack. This caused the pinion to accelerate the type bed on the return stroke and retard it on the printing stroke - actual printing stroke 63%, return 37%. Swing-arm sheet control and register system was standard. Delivery was via endless chain and the printed sheet was turned image up and deposited on a reciprocating frame. Popular, versatile machine world-wide
Technical details: Die Druckmaschinen des Grafischen Gewerbes, (1951) courtesy Doug Charles
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
