Post by Dorincard on Sept 14, 2014 17:54:25 GMT -5
I love this maxicard, so I have chosen it, for now, as the background picture to my maximaphily group on Facebook.
en.wikipedia.org/wiki/Pilatus_railway "Then Eduard Locher, an engineer with great practical experience, proposed an alternative project with the maximal grade raised to 48% to cut the route in half. Conventional systems at the time could not handle such gradients because the vertical cogwheel that is pressed to the rack from above may, under higher gradients, jump out of the engagement with the rack, eliminating the train’s main driving and braking power. Instead, Locher placed a horizontal double rack between the two rails with the rack teeth facing each side. This was engaged by two cogwheels carried on vertical shafts under the car."
Last Edit: Sept 14, 2014 18:24:02 GMT -5 by Dorincard
In 1924, Switzerland issued a set of 4 stamps depicting the Coat of Arms. All were typographed printed on granite, surface colored paper. All are Perf. 11½.
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