US774057A - Blow-off mechanism. - Google Patents

Description

PATENTED NOV. 1, 1904.

J. M. FAGAN.

BLOW-OFF MEGHANNM.

APPLICATION FILED JULY 11, 1904.

N0 MODEL.

INVENTOH WI TNE SSE S A TTOHNE Y8 UivrrEn STATE Patented November 1, 1904.

JAMES MORRIS FAGAN, OF NEW YORK, N. Y.

BLOW-OFF MECHANISM.

PECIFICATI'ONforming part of Letters Patent No. 774,057, dated November 1, 1904.

Application filed July 11,1904 Serial No. 216,052. (No modelfl To all whom it may concern.-

Be it known that 1, Lines i IoRRIs FAGAN, a citizen of the United States, and a resident of the city of New York, borough of theBronx, in the county and State of New York, have invented a new and Improved Blow-Off Mechanism, of which the following is a full, clear, and exact description.

This invention relates to improvements in blow-off mechanism or valves for steam-boilers, an object being to provide a blow-ofi of simple and novel construction so arranged that a main valve when closed will be submerged in clear water, thus reducing to a minimum the danger of destroying the valve by the action of scale and sediment, and, further, to so place the valve that scale will not adhere to it when the device is in operation.

Other objects of the invention will appear in the general description.

I will describe a blow-off mechanism embodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of a blow-ofi. mechanism embodying my invention, showing the same as connected to a steam-boiler. Fig. 2 is a sectional elevation of the device. Fig. 3 is a section on the line m of Fig. 2. Fig. at is a sectional elevation showing a modification, and Fig. 5 is a side view showing another modification.

Referring first to the example of my improvement shown in Figs. 1, 2, and 3, 1 designates a depending casing divided centrally by a partition 2, which at its lower end is spaced from the casing, and this partition provides for two water-legs 3 4 in the casing. The leg 3 may be termed the inlet leg and the leg 4 the outlet leg. Communicating with the upper end of the leg 3 is a pipe 5, leading from the boiler, and extended from the upper end of the leg is an outlet 6,which communicates with a sewer or other point of discharge.

Extended across the upper portion of the inlet-leg 3 is a diaphragm having a vertical wall 7, provided with a valve-seat 8, having a valve 9, the stem of which extends outward through a suitable stuffing-box 11,which is screwed into a wall of the casing and is of sufficient'size to permit the valve to be removed through the opening when necessary for repairs or the like.

Arranged in the upper portion of the outlet-leg 4: is a diaphragm having a vertical wall 12, provided with a valve-seat 13 for receiving a valve 1 1, the stem 15 of which extends outward through a' stuffing-box 16. It will be seen that these valves 9and 1 L extend with their faces in substantially vertical position, so that Water and sediment carried therewith may pass freely through the valve-seat openings without any material portion of the sediment collecting on the valves or on the seats, thus not only prolonging the life of the valves, but making them practically water-tight.

Communicating at its top and bottom with the outlet-leg 4 is a glass sight-tube 17,through which the condition of the water in the casing may be observed.

In Fig. 4 the auxiliary valve 18 is designed to engage in an opening formed in a diaphragm 19, arranged between the upper end of the leg 4 and the discharge-pipe 6, and in this instance the main valve 20 is arranged in a position similar to that of the valve 14. in the first example described. In both cases, however, the main valve is located between the outlet and the inlet.

In Fig. 5 the Water-legs are formed of a length of pipe 21 bent to a substantially U shape, forming the inlet and outlet legs, and in the outlet-leg are valves 22 23, similar to the valves 18 and 20.

In the operation the main valve is to be opened wide and the inflow regulated by the auxiliary valve. In shutting off the flow the auxiliary valve is closed and some of the dirt and scale may be caught between the valve and its seat, which will not, however, cause sufficient leaking to prevent the operation of the device or never enough to prevent the suspended matter in the water in the casing from settling to the lower end of it, leaving the main valve in clear Water. As the valve and seat are clean and submerged in clear liquid, they will come together tightly, insuring an absolutely tight joint. As before stated, the clearing of the water may be observed in the glass 17.

Having thus described my invention, I

claim as new and desire to secure by Letters 2. A blow-off for a steam-boiler, comprising a pair of water-legs communicating at the lower end, a main valve, and an auxiliary valve, the said valves having their faces arranged in vertical planes.

3. A blov-ofi' for a steam-boiler, comprising vertically-disposed communicating waterlegs, the said communication being at the lower end, an inlet'pipe leading into one of 5 said legs, an outlet-pipe leading from the other of said legs, a diaphragm in the upper portion of the inlet-leg and having a vertical portion provided with a valve-seat, a valve for engaging in said seat, a diaphragm at the upper portion of said other leg and having a vertical portion provided with. a valve-seat, and a valve for engaging therein, the faces of said valves being disposed vertically.

A blow-oil" for asteamboiler comprising a casing having a vertical partition spaced. from the bottom of the casing and dividing said easing into an inlet water-leg and an outlet water-leg, an auxiliary valve arranged at the upper portion of the inlet water-leg, a main valve arranged at the upper portion of the outlet water-leg, and a sight-tube communicating at its ends with said outlet-leg.

A blow-off for a steam-boiler, comprising a pair of water-legs communicating at the lower end, a main valve, an auxiliary valve, the said valves having their faces arranged in vertical planes, and a sight-tube communieating at its upper and lower ends with one of the water-legs.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES MORRIS FAGAN.

l/Vi tn'esses:

CHRIsTAIN RINGWALD, J r., HARRY R'IGFFELT.

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