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N.PErERS, PIIVOTQUYMOGRAPMER, WASHINGTON, D: C.
' e tlniinl gw-fi5- `HORACE GRIEFING, 0F NEvv HAVEN, CONNECTICUT, ASSIGNCR To. HIMSE'LF, JAMES-A. EvAnTs, AND DAVID STRONG, oF sAME'rLACE.
momen APPARATUS PoR FEEDING- STEAM-GENERATORS.
The 'Schedulerefen-ed' to in these Letters` Patent and making part o! the sama.
To aIIpwho/mit ma/y cqncmz:
' Be it known that 1,'H0RACE GRIFHNG, of New Haven, in the county of New Haven, and State of Connecticut,-have invented a new Improvement in Apparatus for Feeding Steam-Boilers; and- I do hereby 'declare the following, when taken in connection with the accompanying drawings, and the'letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawingsconstitute part of this specification, and represent, inA
Figure 1, a side view;
-Figure 2, a top view; and, in
.Figure 3, a longitudinal vertical-central section.
This' invention relates to an improvement in apparatus for supplying water to steam-boilers, the object being to supply water to -th'e boiler whenever it is needed, so as to positively maintain the same'heightl of water in`the boiler; and
` l The invention consists in the arrangement of a cyl- Inder outside, and in immediate connection with, the
boller, at the water-line, the said cylinder being prov vided with a piston, to open and close the direct communlcation om the cylinder to the boiler, and also provided with a communicationrfrom above the waterline, and with a water-inlet valve, the several valves Y and pistons operating together by suitable mechanism,
so that thewater received into the said cylinder will owinto the boiler as fast as the water shallfall in the boiler.
To enable others to construct and use my improvement, I will proceed to describe the same as illustrated in the accompanying drawings.
A represents the boiler.
B, a cylinder, fsuitable material, and in size proportionate to the boiler, and secured to the boiler at 4the water-line, as seen in fig. 3, the end towardthe boiler communicating directly with vthe boiler through the sheet, and that end provided vwith a valve, O, arranged on a valve-rod, D, the said valve-rod supported in a bearing, E, within'the cylinder, and in a stufngbox,F-, at the end ofthe cylinder, so that the valve O may bepmoved, to open and close the communication between the cylinder and' boiler by means of the said valve-rod.
0n thevalve-rod Dat any convenient point, I arrange a spring, as seen at ,which acts to close the n' valve C.
Above, on the cylinder, ata point above the waterline, I arrange a tube, .G r, which communicates with the cyhnder B through a valve, H, the said valve H being attached to the rod D through a lever, I, pivoted at a, so that both the valves, O and H, open at the same time ;sthat is to say, when thevalve-rod D is forced inward, to open the valve 0, it withdrawsv the valve H from its'scat, as denoted in red. Therefore, if the cvlinder B be filled with water, and the valves (l and H open, the steam Awill pass, through the tube G. to the cylinder, while the cylinder communicates with the boiler at tbe valve O, thus establishing an equilibrium, so that the water in the cylinder B will fall to a levelwith the water in the boiler.
To supply thecylinder with water, I arrange a valve, L, to which the water-pipe is attached,'the Valveoper.- ated by a rod, M, so that, bythe withdrawal of the rod, the valve is opened, to admit water in the cylinder B.
A spring, f, is arranged on the rod, to close the valve ;l and, in the upper side of the cylinder B, I arrange a valve, N, operated through lever P', so as to open at the same time that the valve L opens..
nections, by a shaft, P, upon which are arranged cams, one to operate the valve-rod D, and, through that, the valve H, as seen in iig. 3, and other cams, to operate the valves L and N.
The operation of the apparatus thus constructed is as follows:
water-line, denoted in blue, iig, 3, the shaft P, being caused to revolve, (and I prefer to keep this in constant revolution by power applied thereto in any convenient mannen) will open the valve L, and,at the same time, the valve N, the said valve N permitting air to escape from the cylinder, the operation of the cams being so as to close the two valves L and-N so soon as the requisite quantity ofwater is admitted to the cylinder, or-the cylinder full. Then the cam upon the shaft P actuates the valves C and H, so as to communicate with the boiler. The steam will pass into the cylinder'B through the tube G, and, establishing an equilibrium in the cylinder with the boiler, the water in the cylinder will pass` into the boiler. Then,'the
their turn, theV valves L and N again open, the steam escapes through the valve N, the cylinder is lled and discharged, as before', and so continuing until the water is raised to the proper level, when no more water will enter until the water inthe boiler falls below the waterline. Therefore this apparatus will maintain the same level of water in the boiler under all circumstances.
Having thus fully described my invention, What I claim as new and useful, and desire to secure by Letters Patent, is-
The arrangement of the cylinder B in communication with a steam-boiler, as described, and combining in itself the valves O and H- and valves L and N, consubstantially asset forth.
The several valves are operated, through proper con- Supposing the water in the boiler tovbe below the shaft stillrevolving, the valves O and H Close, and, in'
structed and arranged so as to operate in the,inanuer-v