Ericsson, John, 1803-1889 · New York : Printed for the author at "The Nation" Press · leaf 551
T DEFENCE. chap. xl. friction produced by clamping two longitudinal Lars securedin tlie middle of the slide, tlie compression being effected bya transverse axle, on the principle adopted in the Princetoncarriage. The longitudinal bars, however, are composed ofbronze in place of wood. The… … being smooth and true, and the wooden linings of the clampaccurately fitted, it will be perceived that a very slight move-ment of the upper and lower parts towards each other, aftercontact with the bars, will at once cause friction, providedthat the set-nuts of the clamp-cap have been properly…
