Section 23.—CONVEYING MOTION TO MOVABLE PARTS OF MACHINERY.

Motion may be conveyed to such parts of a machine as require to be movable, or to distinct machinery which has no fixed location, by the following means:—

[441]. Is an endless rope or other round section belt, kept tight in any position in the plane of the driving pulley by a weighted pulley. In this plan the machine can be moved to any position in the plane of the driving pulley, the weighted pulley taking up the slack of the belt.

[442]. Flexible shaft for light driving. It admits of considerable flexure, and is useful for drilling and similar incidental driving purposes in difficult positions.

[443]. Radiating arm and belt. The movable machine can be driven at any point in circumference of the circle described by the arm head.

[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.

[452]. Central cylinder and radiating lever motion.

[453]. Jointed radiating arms, with belt gear for conveying motion from a central spindle to one having a travel covering any point within a circle of the extreme radius of the jointed arms.