Found 154 total hits in 100 results.
ufficiently to allow any ash and coal passing over to settle; it is withdrawn thence by the fan f passing through the ascending and descending pipes e, and forced into a second chamber, where it is cooled and farther purified.
It is thence distributed by downcast pipes h among a series of horizontal and vertical flannel bags j k l, in which it is condensed as a fine white powder; the lower bags receive that which is shaken into them from those above.
List of United States Patents for Zinc-White.
No.Name and Date.
7,351.Leclaire et al., May 7, 1850.
8,308.Seymour, August 26, 1851.
8,477.Adams, Oct. 28, 1851.
8,756.Jones, Feb. 24, 1852.
10,574.Renton, Feb. 28, 1854.
10,696.Jones, Mar. 28, 1854.
10,711.Trotter, Mar. 28, 1854.
12,329.Selleck, Jan. 30, 1855.
12,333.Trotter, Jan. 30, 1855.
12,418.Wetherell, Feb. 20, 1855.
12,613.Gardner, Mar. 27, 1855.
13,332.Jones, July 24, 1855.
Extended. Aug. 14, 1855.
13,431.Jones, Aug. 1