The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose

by Thomas Walter Barber

[1133]. Ditto, with compound pawls to check angular motion less than the pitch of the teeth.

[1134]. Locking pawl.

[1135]. Strut-action pawl.

[1136]. Indiarubber ball pawl; sometimes a solid roller is substituted for the indiarubber ball.

[1137]. Reverse ratchets, for continuous feed from an oscillating arm.

[1138]. Ball and socket ratchet, will work at an angle.

[1139]. Pawl, used with ordinary spur teeth, and sometimes made reversible (see dotted lines), to drive the opposite way.

[1140]. Ratchet bosses.

[1141]. Silent pawl; the pawl is lifted out of gear while reversing by the motion of the toggle joint and lever.

[1142]. Crown ratchet and pawl.