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

[672]. Two bars and crosshead; these must be far enough apart to allow for the angle of the connecting rod.

[673]. Four bars, crosshead, and slide blocks; the connecting rod working between the two pairs of guides. The bottom guides are often cast solid with the bedplate.

[674]. Bar and slipper.

[675]. Adjustable slipper; there are other adjustments for wear by wedge pieces, similar to [No. 19]. See also [No. 21].

A plain guide bush is sometimes used as [No. 682], and a forked connecting rod with long fork coupled to the gudgeon or crosshead.

[676]. Section of [No. 673] and alternative crosshead for two round bar guides.

[677]. Slide bed and slipper.

[678]. Section of trunk guide, cast with engine bed and bored out.

[679]. Oscillating cylinder piston head guides.

[680]. Oscillating fulcrum in lieu of guides.