US1150637A - Fire-extinguishing means for boilers. - Google Patents

Description

J. SHIERY.

FIRE EXTINGUISHING MEANS FOR BOILERS.

APPLICATION FILED 001229. 1914.

Patented Aug. 17, 1915.

A TTORNEY5.

INVENTOR John Shier COLUMBIA PLANOGRAPH c0 ASHINGTON D c JOHN SHIERY, OF BBIDGEPORT, ILLINOIS.

FIRE-EXTINGUISHING MEANS FOR BOILERS.

Specification of Letters Patent.

Patented Aug. 17, 1915.

Application filed October 28, 1914. Serial No. 869,342.

To all whom it may concern Be it known that I, JOHN SI-nnRY, residing at Bridgeport, in the county of Lawrence and State of Illinois, have invented a new and Improved Fire-Extinguishing Means for Boilers, of which the'following is a specification.

This invention has reference to that class of devices or means attachable to steam boilers and adapted for extinguishing the boiler fire before the water within the boiler reaches a low or danger point, and my said invention has for its object to provide a means of the character stated of a compact and economical construction, in which the several parts are so designed that they may be readily applied to the various construction of boilers and which effectively serve their intended purpose.

iVith other objects in view, my invention embodies the peculiar arrangement and combination of parts, all of which will be hereinafter fully explained, specifically pointed out in the appended claims, and illustrated in the accompanying drawing, in which:

Figure 1 is an end elevation of a boiler with my invention operatively combined therewith. Fig. 2 is a vertical section taken on the line 22 on Fig. 1, the controlling valve being shown at the closed or normal position. Fig. 3 is a detail vertical section showing the parts at the. elevated or open position.

My improved attachments, which act as a safety device for boilers, consists primarily of a tapering casing 1, the upper or contracted end of which terminates in an opening 2, that is internally threaded to receive the lower threaded end of an ex pansion pipe section or tube 3, the upper 'end of which threads into a cap piece 4: provided with a transverse or crown seat 40, the purpose of which will presently appear.

The lower end of the casing 1 is open and is internally threaded, as at 20, to receive the threaded flange 50 of a removable bottom section 5, which includes a hollow pendent casing-like portion 51 that has a threaded outlet 52 to receive the upper end of an outflow pipe 6, that joins with the fuel. feed pipe 7 that conveys the gaseous fuel into the boiler at a suitable point below the door, as is indicated on Fig. 1, by reference to which it will be also seen the I fuel pipe has the usual cutoff valve 71 located beyond the outflow pipe connection 61. The bottom section 51 has a central outlet 53 that also forms a valve seat for the controlling or ball valve 8 and it also has a central pendent guide aperture 5% in which is slidably held a lifting rod or stem 9, the upper end of which terminates in a head 90, which, under normal conditions, is positioned a slight distance below thevalve 8, when the latter is at the normal or closed position, indicated in full lines on Fig. 2 of the drawing. The lower end of the lifting stem 9 rests upon an adjusting screw 10 that threads into a cross bar 11 supported on hanger rods 1:? that form a part of a yoke 12 pendently supported on the cap piece 4 and which engages the seat 40 thereof, as shown. Casing 1 has an inlet 15 that receives one end of a pipe connection 16, the other end of which, as shown, joins with the lowermost one of the water gages 16 on the boiler. 18 designates a control valve in the pipe connection 16. The cap member 4: has a lateral extension 11 that carries a pet cock e2, (see Fig. 1).

13 is a packing gland for the lift rod that cooperates with the controlling or ball valve.

From the foregoing description taken in connection with the accompanying drawing, the operation and advantages of my invention will be readily understood.

As the water in the boilerlowers to a point below the lower gage level, steam enters the casing and passes up into the pipe section or tube 3, the latter, by'reason of its expansiomlengthens andin doing so it lifts the yoke member with the cross bar and thereby elevates the lift rod sufiiciently to cause it to engage and raise the valve 8 from its seat and thereby allows the water in the casing 1 and the steam back of it to pass through the outflow pipe into the fuel pipe and thus extinguish the fire therein.

In practice, the pet cook 42 may be occasionally opened to clear the expansion pipe or tube of dirt and scale and for relieving the pressure of steam when the valve in the pipe connection is closed, following the fire extinguishing operation, and thus permit the said expansion pipe or tube to quickly contract in order to allow valve 1 to drop back to its closed position to bring the parts ready for another operation.

My invention is particularly adapted for use on boilers in the oil field work or at any place where gaseous fuel is used.

What I claim is:

1. In a safety device for boilers, the combination with the fuel supply pipe and the boiler; of a casing having an inlet and an outlet, a pipe connection that joins the inlet with the boiler, an outflow pipe that joins the outlet with the fuel pipe, a valve within the casing that normally seats over and closes the casing outlet, an expansion tube that connects with the casing,a valve shifting element, and a connection between the said shifting elementand the expansion tube for moving the shifting element to move the valve from the casing outlet as the said tube expands.

2.. In a safety device for boilers, the combination with the fuel supply pipe and the boiler; of a casing having an inlet and an outlet, a pipe connection that joins the inlet with the boiler, an outflow pipe that joins the outlet with the fuel pipe, a valve within the casing that normally seats over and closes the casing outlet, an expansion tube that connects with the casing a valve shifting element, a connection between the said shifting element and the expansion tube for moving the shifting elementto move the valve from the casing outlet as the said tube expands, a pet cock connected with the said tube for clearing it and a control valve in the pipe connection from the boiler to the casing.

3. In a safety device for boilers, the combination with the fuel supply pipe and the boiler; of a casing having an inlet at the upper end and an outlet in the bottom thereof, a pipe connection that joins the inlet with the boiler, .an outflow pipe that con nects the outlet of the casing with the fuel pipe, a ball valve within the casing that normally closes the outlet thereof, an expansion tube connected to and extending upwardly from the casing, a cap piece on the upper end of the tube, a yoke pendently supported from the said cap piece,.a cross bar hung on the said yoke, and a lift rod supported by the bar and adapted to engage and lift the aforesaid valve as the yoke and the bar rise under the expansion of the tube.

4. In a safety device for boilers, the combination with the fuel supply pipe and the boiler; of a casing having an inlet at the upper end and an outlet in the bottom thereof, a pipe connection that joins the inlet with the boiler, an outflow pipe that connects the outlet of the casing with the fuel pipe, a ball valve within the casing that normally closes the outlet thereof, an expansion tube connected to and extending upwardly fromrthe casing, a cap piece on the upper end of the tube, a yoke pendently supported from the said cap piece, a cross bar hung on the said yoke, an adjustable support mounted on the cross bar and a lift rod mounted on the said adjustable support and adapted to engage and lift the aforesaid valve as the yoke and the bar rise under the expansion of the tube.

5. In a safety devicefor boilers, a casing open at its upper and lower ends, a plug screwed intorthe lower end of said casing, said plug having a passage provided with a web, said Web having. a valve seat, a ball valve adapted to engage said seat, a packed pin adapted to engage said ball valve and projecting to the outside of said plug, an expansion tube screwed into the upper opening of said casing, a member having a saddle portion on the upper end of said expansion tube, ayoke fitted over, said saddle portion, a cross bar carried bysaid yoke, and extending beneath said pin and an adjusting screw carried by said cross bar to engage with said pin, said casing at having an opening adapted to be connected with the water space of a boiler and said plughaving a discharge outlet, substantially as shown and for the purposes described.

- JOHN SHIERY. Witnesses:

A. J. KAYLAR, E. C. CHANE Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D, C.

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