US99234A - peters - Google Patents

Description

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Inf/M26@ NAFETERS, PHOTO-LITHOGRAPER. WASHINGTON. D C.

diluted Staten ROBERT BERRYMAN, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 99,234, dated January 25, 1870.

LOW-WATER INDICATOR AND FEEDWATER REGULATOR The Schedule referred to :in these Letters Patent and making part of the same.

To all whom it mcg/concern -Be it known that I, ROBERT BERRYMAN, otPhiladelphia, Pennsylvania, have invented an Improved Low-Water Alarm and Feed-Tater Regulator for Steam-Boilers, of which the following is a specification.

Nature mul Object of ,the Intention.

My invention consists of an apparatus, fully dcscrbed hereafter, whereby the admission of water to a. steam-boileris automatically regulated, and an alarm v is given when the water in the boiler falls to a determined point.

Description of the Accompanying Drawings.

sion of water to the boiler.

General Description.

A is a vessel, which is, in the present inst-ance, ofa spherical form, and to the u nder side .of which is secured a pipe, P, extending longitudinally to a point where it is bent at right angles, and passes through Vthe shell of thc boiler, within which it termitates at a point below the low-water line O.

At the upper end of the chamber is a pipe, l", to a branch on which is secured the pipe I, the latter extending horizontally to a point where it is bent at right angles, from which point it is carried downward through, and is secured to the shell of the' boiler, the pi peterminating within the boiler at the low-water line. The portions ot' the pipe P and pipe P2 on the outside of the boiler, should lle-of sufficient length to permit them to yield, in the manner described hereafter.

A lever, L, having its fulcrum on a projection, F, of a standard, D, resting on the shell ot' the boiler, is provided at one end with a weight, B, the opposite end heilig forked, so as to receive V-shaped projections on the pipe P1, lthe lever and its weight thus supporting the vessel A and its adj uncts, and serving as a connterbalance for the same.

The lever It of the whistle NV, extends through a rod, G, which is so secured to another rod, att-ached to the standald D, that it can be adjusted vertically, for a purpose described hereafter'.

The whistle has an internal spindle terminating below in a valve, which is maintained in contact With its seat with a spring at the upper endot' the spindle, the latter being connected to the above-mentioned lever R.

As long as the wat-enfin the boiler remains at its proper level, (that is, above the the low-water line O, the ends of the pipes P and P2 being consequently immersed in the water,) the pressure of steam will maintain the pipes and the vessel A full of water, so that the -vessel will be depressed, its weight being in excess of the force exerted by the counter-balance lever L.

WVhile in this depressed condition, the whistle-lever R, which passes through the stationary rod G, will be elevated, and will consequently permit the valve of the whistle to remain in contact with its seat .When the water in the boiler becomes too low, however, that is, below the line 0,-the steam will enter the pipe P2, and thev'essel A will be speedily emptied of its water, and thus, becoming lighter, will, together with its whistle, be elevated by the counterbalancelever L, and the lever'R, which will also be elevated, (being controlled by the Vstationary rod G,) will cause the valve ot' the whistle to be opened, and an alarm to be given.

When the apparatus is to be used for regulating the admission ot' water to the boiler, the vessel A (or the level' L) is connected to a valve in the feed-water pipe, or with devices which control the action of the Ypump or the flow of the feed-water, so that when the vessel rises, the wateluwill pass into the boiler, the descent of the vessel causing the water to cease its dow.

One mode of effecting this result is shown in fig. 4, when the lever L is connected, by a rod, J, with a lever operating a valve in the feed-water pipe.

The. pipe P2 is larger in diameter than the pipe P, so that the increased volume of steam, thus admitted to the vessel, will insure the instant and rapid discharge of the water from the'same, and from the pipe P, and the prompt action of the apparatus..

`In the modification illustrated in fig. 3, the whistle, instead of communicating wit-h the vessel A, is stationary upon and communicates with the boiler, and is operated on the movement of the vessel or of its lever.

Although I have referred to flexible pipes P, PZ, it will be apparent that rigid pipes may bc employed,

vsteam-tight joints .or couplings being placed in the pipes, at such points as may be necessary to allow the pipes to accommodate themselves to themovements of the vessel.

l do not here claim, broadly, the use of two pipes of dierent diameters, in connection with a vessel communicating with a steam-boiler; nor do I here claim 2. The said vessel, in combination with a steam' whistle, and with the within-described devices for-operating the whistle.

3. The rod G, adjustable in respect to the lever R, for the purpose described.

In testimony whereof, I have hereunto signed m37 name, in the presence of two subscribing witnesses.

ROBERT BERRYMAN.

Witnesses:

ISAAC R. O AKFORD, GEo..E. NICHOLS.

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