Fig. 3176.
[Fig. 3176] is a general view, and [3177] a longitudinal section through a standard planing and matching machine of recent design, constructed by Messrs. J. S. Graham & Company. The plank passes through two pairs of rollers before meeting the front cutter head. The side heads then come into operation cutting (in the case of flooring) the tongue on one side of the plank and the groove on the other, the under side of the plank being dressed last.
The machine is built in three widths viz., 8′′, 14′′ and 26′′, each planing to 6′′ thick and matching as wide as it planes.
In place of matching heads, heads for beading, rabbeting, or fancy siding may then be used.
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Fig. 3177.
The board r ([Fig. 3177]) is fed in over the grate m′ until it reaches the rolls e and f′, which are held in place by the boxes fitted to the roll stand n′, and brought to bear on the lumber by means of the screw a′, equalizing bar m and nuts p, p, together with the lever y y and the weight x.
