Fig. 3169.
[Figs. 3169], [3170], [3171] and [3172] represent a pony planer, by P. Pryibil.
Fig. 3170.
Referring to the sectional view [Fig. 3170], the work table slides in vertical slideways s, in the side frames, the elevating screw being operated by the bevel gears at g, which receive motion from the hand wheel m in [Figs. 3170] and [3171]. There are four upper rolls, marked 1, 2, 3 and 4 respectively, and of these the first two are fluted in the usual way. There are two lower rolls, marked respectively 5 and 6. The fluted feed rolls 1 and 2 are weighted, the weight lever acting on the rod r, which at its upper end connects to the cap y, which covers the bearings of feed rolls 1 and 2. By this construction the two rolls are acted upon by the same weights and levers, the rolls being of course weighted at each end, or in other words on both sides of the machine.
Fig. 3171.
The delivery rolls 3 and 4 receive their pressure by the construction shown in [Fig. 3172], the bearings of the rolls being held down by rubber cushions receiving pressure from the cap e, screwed down by the bolt and nut.