[444]. Similar plan, but driven by bevil gear instead of belt.

[445]. Bevil gear and feather shaft. The movable machine having a travel in a straight line the length of the shaft as well as a radiating motion.

[Larger plate.]

[446]. Screw and worm wheel gear, for the same purpose as [445].

[447]. The driven wheel A has a limited travel up and down the slot, the idle wheel B being kept in gear by the link suspension.

[448]. Idle wheel and slot. A common device for changing direction or speed in driving gear by connecting or disconnecting it with intermediate gearing between a fixed driving and a driven shaft.

[449]. Parallel motion radiating driving device, with a limited vertical travel and a radial motion.

[450]. Motion by belt is conveyed to a driven shaft having a radial motion in a vertical plane. Used for light drilling, emery wheels, &c.

[451]. Steam or hydraulic radiating arm and cylinder device.