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

[1522]. Plain bevil gear; shafts at right angles.

[1523]. Plain bevil gear; shafts at acute angles.

[1524]. Plain bevil gear; shafts at obtuse angle.

[1525]. Plain bevil gear; four shafts at right angles.

[1526]. Skew bevils; shafts not in line with one another.

Note.—Where the pair are both of same diameter they are called “mitre wheels.”

[1527]. Spur wheel and pinion; to increase or decrease power and speed the diameters can be varied to almost any proportion.

[1528]. “Screw gear”; single helical gear.

[1529]. Skew spur wheels; shafts not parallel.

[1530]. Dr. Hooke’s gear. Three or more separate wheels of similar or dissimilar pitch fixed together so as to divide the pitch and reduce backlash.