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

[2600]. Feed motion for shapers, &c., reversible.

[2601]. Feed motion for shapers, &c., reversible.

[2602]. Friction pawl feed motion, silent. See also [Section 62].

---

Section 108.—FILTERING.

Through porous pots.

Through porous solids, such as charcoal.

Through pumice stone, chalk, &c.

Through porous fabrics, flannel, paper, &c.

Through sponge, spongy platinum.