Creighton, William Henry Paul, 1859- · New York, J. Wiley & sons; [etc., etc.] · leaf 70
which permits the straight portion of the wire at the bottom ofthe spring, with its bead, to drop to a concave bearing in the upperend of the piston-screw, 9, which is closely threaded into the lower STEAM-EXGINE IXDICATOK AXD ITS CALIBRATION. 49 part of the socket; the head of this screw is… … Fig. 27.—Crosby Indicator—Outside Spring. be theoretically without weight (on account of inertia stresses),,and should be frictionless. With the advent of superheated steamand the use of outside springs, this firm changed the shape andsize of the indicator-piston. For, they say (Fig. 27), the…
Steam-engines · Heat-engines
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-319-194.webp)
