d allow it to drain into the kettles.
In the illustration the pan bottom is double, forming a steam-jacket; the multiflue boiler forms a jacket around the fuel-chamber.
The flame and heat, after direct passage through the flues, pass backwardly alongside the furnace-jacket and beneath the steam-jacket of the pan.
The following United States patents may be consulted:—
Guiteau1842.Garrison1862.
Hull1855.Hull1863.
Humphreys1856.Farrar1863.
Heims1859.Platt1869.
Pratt1862.Gilson1870.
Chapin1862.Howarth1871.
Brine-pump.
（Steam-engine.) A pump worked by the engines to withdraw the super-salted water from the boilers mechanically, instead of by periodical blowing off.
Maudslay and field's English Patent, 1824<, describes a brine-pump with a loaded dischargevalve worked by the engine, and so proportioned as to draw from the lower part of the boiler the quantity determined on, which may be regulated by a meter, showing the quantity driven off in the form of steam.
After
1860.
30,033E. AllenSept 18, 1860.
*30,760J. S. ReederNov. 27, 1861.
33,607C. SharpsOct. 29, 1861.
33,769A. HamiltonNov. 19, 1861.
34,325G. W. WhiteFeb. 4, 1862.
*34,504E. M. JuddFeb. 25, 1862.
35,686F. DewzlerApr. 29, 1862.
37,339G. W. WhiteJan. 6, 1863.
37,544J. DavisJan. 27, 1863.
33,455W. AldrichMay 12, 1863
*33,004W. H. RiceMay 19, 1863.
41,343Mix and HortonJan. 9, 1864.
*41,375J. GrayJan. 26, 1864.
42,139C. B. HoldenMar. 29, 1864.
42,685C. F. PayneMay 10, 1864.
42,743L. N. ChapinMay 17, 1864.
*44,995J. GrayNov. 8, 1864.
*45,105R. WilsonNov. 15, 1864.
*45,560J. GrayDec. 20, 1864.
*45,919W. FitzgeraldJan. 17, 1865.
49,583L. W. BroadwellAug. 22, 1865.
51,243W. TibbalsNov. 28, 1865.
51,258J. DavisNov. 28, 1865.
54,744J. LeeMay 15, 1866.
54,934J. V. McigsMay 22, 1866.
59,549J. N. AronsonNov. 13, 1866.
62,077C. SharpsFeb. 12, 1867.
64,650J. ElsonMay 14, 1867.
66,709A. J. H. HiltonJuly 16, 1867.
67,633J. ElsonJuly 23, 1867.
81,100J. V. MeigsAug. 18, 1868.
ly 1, 1873.
142,812PowellSept. 16, 1873.
142,819SpringerSept. 16, 1873.
143,955BondOct. 28, 1873.
143,969De WaruOct. 28, 1873.
(Reissue.)5,689RobertsDec. 16, 1873.
145,841BuschmeierDec. 23, 1873.
148,047GoodrichMar. 3, 1874.
148,048GoodrichMar. 3, 1874.
150,787PowellMay 12, 1874.
154,113BaglinAug. 18, 1874.
154,485HowardAug. 25, 1874.
158,231BallouDec. 29, 1874.
(Reissue.)6,306PowellFeb. 23, 1875.
6. Hemmers.
10,386BlodgetJan. 3, 1854.
12,826OdiorneMay 8, 1855.
14,283ChapinFeb. 19, 1856.
15,402BoyesJuly 22, 1856.
17,224MarstonMay 5, 1857.
20,245SerrellMay 11, 1858.
20,695BoydJune 29, 1858.
21,355OdiorneAug. 31, 1858.
23,079ClemonsMar. 1, 1859.
24,088Barnum et al.May 24, 1859.
25,715Blake et al.Oct. 11, 1859.
26,207SerrellNov. 22, 1859.
27.805HowellApr. 10, 1860.
28,889MitchellJune 26, 1860.
31,602HowellMar. 5, 1861.
31,645MarshMar. 5, 1861.
31,878DownerApr. 2, 1861.
32,035WhitcombApr. 9, 1861.
32,519JenksJune 11, 1861.
32,710PaddockJuly 23, 186