era- from the side, thus preventing any vertical or lateral ture was 74°. movement. A sufficient number of spikes are used in Both thermometers were carefully compared with a Fig. 2. the chairs to prevent creeping of the rails. A modi- valuable standard instrument and with each other, fied form of… … aperture, is fitted to slide in guideways in a longitudi- casing complete, there being two staves removed from nally sliding plate having a key hole connected with the casing as shown in Fig. 2, to disclose the lining be- GLYNN'S RAILROAD RAIL. ) 1891 SCIENTIFIC AMERICAN, INC.
Feet · Illustrated · Adapted · Munn · Scientific American · Device · Wrought iron · Sir joseph · Great toe · Electric light · Water power · American supplement · Express money · Floor plans · Post office
Internet Archive · Public domain (published before 1931). Free to use for anything.
