... composedof circular arc 1- 2 with center at 02, arc 3-4 with center at 03, arc 4-5 with center at 01, arc 5-6 with center at 04, arc 7 -1 withcenter at 01, and the straight lines 2-3 and6 -7 . The method calls ... links II and III come into toggle.Sclater Chapter 7 5/3/ 01 12 :33 PM Page 212 213 SIXTEEN LATCH, TOGGLE, AND TRIGGER DEVICESDiagrams of basic latching and quick-release mechanisms. Fig. 1 Cam-guided ... technique formachining circular-arccams. Radii r 2and r5areturned on a lathe; hard-ened templates areadded to r1, r3, and r4forfacilitating hand filing.Sclater Chapter 7 5/3/ 01 12 :33 PM Page 204205Fig....