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

[1161]. Star wheel and fixed pawl for conveying intermittent motion to screw on revolving disc; used for boring-bars, slide rests, &c.

[1162]. Pendulum and ratchet escapement.

[1163]. Cylinder escapement.

[1164]. Pendulum and double ratchet wheel escapement.

[1165]. Enlarged plan of cylinder escapement.

[1166]. Lever escapement.

[1167]. Double pawl and pin wheel escapement.

[1168]. Three-leg pendulum escapement.

[1169]. Self-sustaining ratchet motion. Pulling the cord A throws the pawl out of gear by the straightening of the cord forcing back the bent pawl lever.

[1170]. Verge escapement.