International Library of Technology · Scranton, International Textbook Co. · leaf 439
Fig. 1637. flanges are usually recessed and provided with ribs to makethem stiff and at the same time secure lightness. The ends of the spool are rounded out asshown, so as to give clearance forthe heads of the bolts which clampthe pole-pieces together. In design-ing field coils and spools, care… … Fig. 1638.
Electrical engineering
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.], 1902, leaf 439](https://img.insideoutlibrary.com/img/1024/ia-electricengineer02inte-439-257.webp)
