US687794A - Automatic cylinder-cock. - Google Patents

Description

Patented Dec.' 3, I90l. C. L. TURREV.

AUTUMATIG CYLINDER 006K.

(Application le'd Sept. 5, 1901.)

(No Model.)

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NITED STATES CHARLES L. TORREY, OF TOLEDO, OHIO, ASSIGNOR OF ONE-FOURTH TO JOSEPH B. COWGILL, OF TOLEDO, OHIO.

AUTOMATIC cYLlN DER-Cock.

SPECIFICATION forming part of Letters iba/tent No. 687,794, ated 'December 3, 1901. Appncanwfnedseptemtert.1901. serial nannte. (Numtel.)

device of the hind that is adapted to prevent any dangerous accumulation of water in the cylinder of an engine arising from condensation or accidental dooding from the heater or vcondenser by draining it from the cylinder as fast as it accumulates and automatically discharging it without loss of steam; furthermore, to provide a simple, inexpensive, and eective device of the kind that may be readily applied to an engine-cylinder. I attain these objects by constructing a cylindercock as hereinafter described, and illustrated in the drawings, in which- Figure l is a View in vertical section of an automatic drain-cock constructed in accordance with my invention and showing the valves open to discharge the accumulated water, and Fig. 2 is a like view showing the valves closed.

In the drawings, l designates a reservoir of suitable capacity and preferably of cylindrical formation with an integral bottom and is provided with a top-closure 2, which is suitably attached to the reservoir-body.

3 designates a valve-cylinder located eccentrically within the reservoir and integrallyr connected with the wall of the reservoir at one side and is of a length and diameter to leave an open space above, below, and surrounding the cylinder, except at its connection with the wall of the reservoir, for the free circulation of Water or steam, or both. In the top of the valve-cylinder there is formed a threaded opening 4, adapted to receive and engage the closure 5 for the valve-cylinder, and in the closure there is formed a valveseat 6, which is adapted to accurately receive and seat vthe valve '7. In the bottom 8 of the valve-cylinder and in vertical alinement with the valve-seat 6 there is formed a valve-seat 9 for l(he valve 10. Valves 7 and 10 are secured to opposite ends of a common stem 11,

which is 'of a length adapted to simultaneously seat both valves vertically downward in their respective seats. Stem ll is guided in ari elongated sleeve l2, which is formed integral with the closure 5 and is pendently supported therefrom within the cylinder 3 by means of the spider-arms 13, disposed around the valve-port 14. The sleeve is made of such length that the lower end 15 will operate as a stop for the movement of the valvestein by contacting with the top of valve 10. The two valves are balanced by making the top face 16 of valve 7 equal in area to the bottom face 17 of valve l0, and by thus equalizing the valve areas exposed to pressure the valves, which are normally seated by gravity, will be held seated by gravity-the steam-pressure being always equal on the two valvesuntil the weight of the valves is overbalaneed by the weight of an accumulated column of water in the reservoir.

The reservoir l is connected to the end of an engine-cylinder by a drain-pipe 18, suitably attached to the cylinder in position to drain oit' all the water from that end and to the reservoir by means of threaded connection 19, formed in the nipple 20, integral with the wall of the reservoir.

2l designates a nipple, also integral with the reservoir-wall and communicating through a suitable port 22 with the interior of valvecylinder 3, and to the nipple 2l there is secured a discharge-pipe 23 for draining water from cylinder 3 to any suitable place.

To the bottom of the reservoir there is also secured a drain-cock 24 for drawing o all the water from the reservoir should occasion require.

In the operation of my device each end of the cylinder of an engine is provided with an automatic drain cock constructed and secured thereto, as described, whereby all water accumulating in the cylinder, whether from condensation of steam or 'accidentally by the bursting of a heater or condenser pipe, is drained into the reservoirs, where it accumulates in each respectively until the weight of the water overbalances the weight of the valves 7 and lO and their stem. Preferably the weight of the valves is adj usted to be balanced by a column of water of a height to iill IOO the reservoir and a fixed distance above it in pipe 18. The operation would then be as follows: When sufficient Water has accumulated to till the reservoir above the inlet to the reservoir, the steam in the upper end of the reservoir will be confined therein until the Water rises high enough in pipe 18 to open the valves. The steam in the upper part of the reservoir will then escape through the valve 7 and the water through valve 10 into cylinder 3 and thence through the discharge 23. The pressure of steam n the engine-cylinder will force the water downward through pipe 19 until it is below the level at which the weight of the water is sufficient to hold the valves open and they will then close and the pressure of steam in the engine-cylinder will then ll the reservoir, and the valves will remain closed until water again accumulates in pipe 18 to the predetermined height at which its weight overbalances the valves, when they will again open and water will be discharged through both the upper and lower valves until it reaches a level in pipe 1S, Where the Weight of the valves is su ticient to overhalance the weight of the water, when they will again close, after which they will open and close at intervals of time proportioned to the rate of accumulation just suliicient to discharge the overweight of water as it accumulates in pipe 18. In the event of a sudden flooding of the engine-cylinder through its exhaust-ports, occurring from the bursting of a water-pipe in the heater or condenser, the valves of the drain-cock will remain open until the Water is fully discharged and prevent the breaking of the engine that is liable to occur from such cause.

Having fully described my invention, what I claim to be new is- 1. An automatic cylinder-cock, comprising a closed reservoir having a drain-pipe adapted to connect it with the cylinder of an engine in position to drain Water from the cylinder into the reservoir and till it, a closed chamber in the reservoir located to leave an open space extending above, around and beneath the chamber for the free circulation of Water or steam, a port in the top in vertical alinement with a port in the bottom of the inner chamber, the ports being provided with valve-seats for valves movable vertically upward, valves for the seats having a common connecting stein and equal outer pressure areas, the valves thus connected being adapted to be seated by gravity and to be opened by a column of water in the reservoir and its connection of a height suiicient to overcome the Weight of the valves and their stem, means to guide and to limit the movement of the valves, and a discharge adapted to drain the valve-chamber.

2. In an automatic cylinder-cock, the com bination with a reservoir having a detachable top closure and a drain-pipe adapted to connect it with a cylinder of an engine in position to drain Water from the cylinder into reservoir and fill it, of a valve-cylinder Within and integral with the reservoir located therein to leave an open space extending above, along and beneath the valve-cylinder for the free circulation of water or steam, an opening in the top of the valve-cylinder, having a detachable closure, a port in the top closure of the valve-cylinder in vertical alinement with a port in the bottom ot the valve--cylinder, the ports being provided with valve-seats for valves movable vertically upward, valves for the seats having a common connectingstem and equal outer pressure areas, the Valves thus connected being adapted to be seated by gravity and to be opened by a column of Water in the reservoir and its connection of a height suiicient to overcome the weight of the valves and their stem, a sleeve for guiding the valve-stem, pendently supported from the top closure of the valve-cylinder by spider-arms integral with the closure, and a discharge-pipeadapted to drain the valve-cylinder substantially as shown and described.

In Witness whereof I have hereunto set my hand this 29th day of August, A. D. 1901.

CHARLES L. TORREY.

Witnesses:

WILLIAM H. MOOR, A. HARRINGTON.

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