It will often occur that the work will not pass beneath the cross slide, and in that case it should be raised out of the ways to enable proper oiling, because insufficient lubrication frequently causes the guides and guideways to tear one another, or cut as it is commonly termed.
The means commonly employed for oiling planer Vs or guideways are as follows:—At the top of the guideways small grooves, g g, [Fig. 1609], are provided, and at the bottom a groove x. In the guides on the table there are provided pockets or slots in which are pivoted pendulums of the form shown in [Fig. 1607] at a. Each pendulum passes down to the bottom of groove x in which the oil lies, and is provided on each side with recesses e, which are also seen in the edge view on the right of the figure.
Fig. 1607.
Fig. 1608.
The pendulums are provided with a long slot to enable them when the table motion reverses to swing over and drag in the opposite direction (as shown in [Fig. 1607]); as they drag on the bottom of groove x of the bed they lift the oil it contains, which passes up the sides of the pendulum as denoted by the arrow, and into grooves provided on the surface of the table guide, as at h in [Fig. 1608], in which v′ is the table guide, v the guideway in the bed, g oil grooves, (see sectional view, [Fig. 1613]), x the oil groove at the bottom of the bed v, and h h the oil grooves which receive the oil the pendulum lifts.
The oil grooves h on the table guide run into the grooves g in the V-guideway in the bed, hence grooves g g become filled with oil. But after the end of the table has passed and left the bed v exposed, the oil flows out of grooves g down the sides of the guideway, and constant lubrication is thus afforded at all times when the stroke of the table is sufficient to enable the pendulums to force the oil sufficiently far along oil way h. When the table reverses the pendulum will swing over and lift the oil up into grooves or oil ways h′.