US551025A - John albert weight and thomas jones hopley - Google Patents

Description

(No Model.)

J. A. WRIGH T & T. J. HOPLEY. AUTOMATIC DRIP 000K FOR STEAM E No. 551,025.

NGINES. Patented Dec. 10, 1895.

' j W i S'rarns .lOl-Ihl ALBERT WEIGHT AND THOMAS JONES IIOPLEY, OF: \VILKINSBURG, PENNSYLVANIA; SAID IIOPLE Y ASSIGNOR TO SAID \VRIGHT.

Auroiv m'ioomge-eocu Fen STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 551,025, dated December 10, 1895. l

Application filedhiarch 22,1896. Serial to. 542,798. (Non odeL) I sylvania, have invented certainnew and useful Improvements in Automatic Drip-Cocks for Steam-Engines and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it apbeing had to the accompanying drawings,

' which form a part of this specification.

Our invention relates to improvements in automatic drip-cocks for the cylinders of steam-engines for drawing oif the water of condensation.

In the ordinary cylinder drip -cocks of steam engines, especially locomotiveengines, it frequently happens through forgetfulness or carelessness that the engineer neglects to 'open the cocks in starting the engine to allow the Water of condensation to escape, which tends to impair the efiiciency of the engine and cause accidents. Again, in Winter, when the engine is not in action and the, drip-cocks are closed, it frequently happens that the water of condensation freezes, so that. in starting the engine the joints and cylinder-heads are liable to .be blown out.

The object of our invention is to obviate the above and other objections and provide a dripcock for each end of a steam-engine cylinder, as usual, having automatic valves, .which are alternately opened and closed at each stroke of the piston by the steam-pressure in the cylinder, the cock at one endbeopened while the cylinder is exhausting at that end and the other cock closed, and vice versa. The construction is also such whenthe engine is at rest or inactive both valves will be open, so that the cylinder willbedrained of the water of condensationat both sides of the piston. "The invention consists in the novel construction and combination of parts hereinafter fully described and claimed.

111 the accompanying drawings, Figure 1 is aside elevation of two connected driprcocks constructed in accordance with our invention.

Fig. 2 is a central longitudinal section of the same. Fig. 3 is a detail sectional viewof the two-part hanger.

In the said drawings the reference-numeral 1 designates two vertical drip-cocks screwthreaded at the upper ends to engage withthe boss 2. of the steam-cylinder, one of said cocks being provided at each end thereof. Each of these cocks is formed with a cylindrical bore 3, in which works a vertically-reciprocating valve-rod 4, formed at its upper end with a valve 5. This valve works in a' valve-chamber 6 in the upper end of the cock, provided with a seat 7. Connected with this valve-chamber is an outlet 8. Connected with the lower ends of these valve-rods is a lever 9, pivoted at its center to a hanger consisting of two bars 10 and 12, one of which is formed with a screw-shank 13, fittin gin acorrespondingly-threaded recess in the upper bar 12,- whereby thebar 10 can be adjusted vertically.

The upper end of bar 12 is secured to a'rod outer ends ofthese pins are provided with an adjustable collar 18 and aset-screw 19.

The operation is as follows: When the en gine is at rest, the coiled springs 19, which are of equal tension, cause the valve-rods to be elevated'and the valvesraised from their seats,

so that any water of condensation in the cylinders Will escape t'lirough'the outlets 8, thus rendering accidents consequent upon accumulation of water in the cylinders impossi- 'ble. When the engine is started, the steam upon the pressure side of the cylinders will depress the valve at this end, closing the same, and through the medium-of the lever will open the valve at the opposite or exhaust side, allowing any water and a portion of the steam therein to csca c. This operation will be repeated at each s roke of the piston, the

valves being alternately opened and closed.

By means of this two-part hanger the lever connecting the valve-rods can be 'adjusted vertically, so as to vary the stroke of the valves. i l

The (lei'ice can beapplied to the ordinary cylinders now in use withoutany alterations being made thereto it beingsimply necessary to remove the usual drip-cocks connected therewith and replace them with the cocks described herein.

Having thus fully described our invention, what we claim is- 1. In a drip device for steam engines, the combination with the drip cocks lntving cylindrical bores, enlarged chambers at the lower ends formed with slots, the valve chambers at the upper ends, the valve seats and the outlets below the valve seats and above the chambers at the lower ends, of the vertically reciproeati 11g valve rods working in said bores and provided with valves at their upper ends, the lever passing through said slots and pivoted to the valve rods, the hanger to which said lever' is pivoted, and the connecting bar to which the leveris secured, substantially as described.

2. In a drip device for steam engines, the combination with the drip cocks haiing cylindrical bores and valve chambers and valve seats at the upper ends thereof, and an outlet below the valve seats, of the vertically reciproeating valve rods, the rod connecting said cocks, the hanger secured thereto, the lever pivoted to said hanger and its ends passingtin'ough slots i n the lower ends of the cocks and pivoted. to the lower ends of the valve rods, the pins passing through the lowerends of the cocks, the annular collars on the inner ends thereof. uponwhich the valve rods rest,

' and, the coiled springs confined between the lower ends of the cocks and said collars, substantially as described.

3. In a drip device for steam engines, the combination with the drip cocks having eylindrical bores and a valve chamber and valve seat at the upper ends thereof and an outlet below the valve seats, and the vertically re; ciprocating valve rods 'provlded with valves,

ally connected with valve rods. the pinspassing through the lower ends I the cocks pro vided with annular eollars ai theirupper ends on which the valve rods rest, and the coiled springs confined bctweensaid collars and the lower ends of the cocks, subsial|tiallyas described. I

In testimony that we claim the foregoing as our own we have heretunto affixed our signatures in presence of two witnesses.

JOHN ALBERT WRIGHT. THOMAS JONES IIOPLEY. Witnesses:

ITmNRv M. J onnsron, SAMUEL A. GILL.

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