[130]. Wrought-iron L and flat bar rectangular frame, suitable where great rigidity is not needed, but where cast-iron is not safe or desirable.
Wrought-iron is becoming much more largely employed for the framing of general machinery than heretofore, and it is customary in many cases to supplement a cast iron base or frame with wrought iron or steel bars.
Section 9.—CAM, TAPPET, AND WIPER GEAR.
For producing, from plain circular, or reciprocating motion, variable speed or motion, also intermittent and every kind of irregular motion. Cams are either open or covered. [Nos. 131, 132, and 133] are open cams; [Nos. 137] and [138], covered cams.
[131], [132], & [133]. Three forms of the “heart” cam, for giving a regular or intermittent vertical motion to a lever end.
[134]. Crown cam for vertical shaft.
[137]. Covered heart cam.
[138]. Covered crown cam.