Heart rocker: Difference between revisions
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m (Dnevil moved page Heart rockers to Heart rocker: Changed plural to singular.) |
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<gallery widths=300px heights=300px> | <gallery widths=300px heights=300px> | ||
File:HeartRockerDiagram BillShields.jpg|Diagram showing the four radii of a typical heart rocker, or inverted rocker. Drawing by Bill Shields. | |||
File:Slotted Rockers with New Base Plates - Cardo.jpg|Slotted heart rockers with new base plates. | |||
</gallery> | </gallery> | ||
Revision as of 14:48, 31 October 2018
Alfred W. Bruce wrote in The Steam Locomotive in America:
- The inverted-rocker device was introduced about 1914. The inverted rocker was a heart-shaped rocker resting on two rolling contacts at the bottom and supporting two inclined planes at the top--one on each side of its apex center point. Thus movement in either direction produces a rolling-contact support which permits ample lateral movement with nearly any desired resistance characteristic, a quality that has retained this device in use today [approx. 1952].
Gallery
Diagram showing the four radii of a typical heart rocker, or inverted rocker. Drawing by Bill Shields.
Slotted heart rockers with new base plates.
