US683021A - Boiler feed-regulator. - Google Patents

Description

No. 683,021. Patented sept. 24, i901.

E. 8:. E. E. CLARK. BILER FEED REGULATOR. (Appuctign med nge. 2, '1e99. (No Model.) 2 Sheets-Sheet I.

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No. 683,02l. Patented Sept. 24, |90I.

Y 0. E. 6. E. E. CLARK.

BUILEB FEED REGULATOR.

(Application led Dec. 2, 1899.| (No Model.) '2 Sheets-Sheet 2.

[N VEN TORS Wl TNESSES q Uma/71E? Clark "Q UNiTED STATES PATENT EEICE.

OMAR E. CLARK AND ELLSWORTI-I E. CLARK, OF VICKSBURG, MICHIGAN.

BOILER FEED-RE GULATOR.

SPECIFICATIO forming part of Letters Patent N0.v683,021, dated September 24, 1901.

Application filed December 2, 1899. Serial No. 739,019. (No model.)

To ctZZ whom, t may concern:

Ee it known that we, OMAR E. CLARK and ELLswoRTH E. CLARK, citizens of the United States, residing at Vicksburg, in the county of Kalamazoo and State of Michigan, have invented certain new and useful Improvements in Boiler Feed-Regulators, of which the following is a specification.

This invention relates to steam-boilers, but more particularly to a low-Water alarm and a feed device therefor; and it consists in certain novel features of construction, combination, and arrangement of parts in an apparatus of this character, which will be hereinafter more fully described, illustrated in the accompanying drawings, and set forth in the appended claims.

The objects of the invention are to provide a simple and effective means comprising a Heat-operated valve mechanism for letting on and cutting off the supply of steam to the injector-pump to maintain the water in the boiler at a predetermined level and to operate or control the whistle-valve when the water reaches a level below a predetermined point or the pump fails to work.

In the drawings, Figure 1 is a vertical transverse sectional view through a casing of approved construction, showing my invention applied thereto. Fig. 2 is a side elevation of the mandrel and valves; and Fig. 3 is a transverse section through a modied form of casing, showing a modified form of mechanism.

Referring now' to the drawings by reference-numerals, 5 indicates a casing arranged on a steam-boiler, and in which is arranged a steam-chest 6, provided at its top with oppositely-disposed tapering valve-seats 7 and 8, in which are seated valves 9 and 10, respectively, pivotally connected t0 the superimposed lever 11 by means of the pendent valvestems 12 and 13, which engage the respective ends thereof. Said lever is rigidly secured to the mandrel or shaft 14, journaled in suitable bearings and arranged in said casing. Projecting from said shaft 14 is a crank-arm 14a, with which is connected a transverselyextending arm or rod 15, on the free end of which is a float 16, suspended from the depending portion 17 thereof and adapted to normally retain the valves heretofore referred to seated in their seats-that is, when the water assumes a level indicated by the dotted lines 18, said lines indicating the level ofthe water under normal conditions. Should the water recede below that level, owing to its being generated into steam or from other causes, the oat will drop down to said level and gradually withdraw the valves from their seats, allowing steam to' enter the steam-chest from the dome of the boiler, and said steam will pass out through the-outlet-pipe 19 to a suitable injector or steam-pump, (not shown,) which will be started thereby and supply the boiler with water through the inlet-pipe 20. As soon as the water reaches the desired level the oat, being carriednp with it, will close the valves 7 and 8 and the pump will be secured against working until the water recedes again. Should the water become too low or the pump fail to work, the projecting end 2l of the valve-stem 13 will contact with the depending nger 22 of the bell-crank lever 23, which will withdraw the valve 24, pivoted thereto at 25, from its seat and ad mit steam to the whistle, thus indicating the danger of an explosion. At the top of the casing, immediatel y over the mechanism above described, we have provided a manhole 26, whereby access may be gained to the interior of the casing and the parts cleaned or repaired.

In the modification, 5 indicatesthe casing or shell, provided with a steam-outlet 10, in which is a valve-seat 19a. A shaft 27 is arranged in said casing, and projecting therefrom is a crank-arm 27, carrying an arm or rod 15, on the free end of which is secured the float 16, adapted to rise and fall with the level of the water. An upwardly-projecting arm 28 extends from the shaft 27, and pivoted thereto is a valve-stem 29, carrying at its free end the valve 30, adapted to be seated in the seat 26 by the action of the oat. mechanism consists of a pivoted lever 3l, having the depending nger 32 intermediate its ends and provided with a reg ulatin g-screw The alarml 33, designed to contact with the valve-Stem 29 when the water is at a low level. The valve-stem A34 is pivoted at 36 to the lever 31 and carries a valve 37, designed to normally hold the whistle-tube 3S closed, which action is facilitated by the adjustable weights 39, slidably secured on the free end of said lever 31.

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It will thus be seen that we have provided a neat and simple construction of feeder and alarm, and we would have it understood that the minor details of construction may be resorted to within the scope of the invention without departing from the spirit or sacrificing any of Ithe advantages thereof.

Having thus described this invention, what We claim, and desire to secure by Letters Patent, is

l. A boiler feed-regulator comprising a casing, a steam-outlet pipe connected to the casing, an inwardly-projecting valve-seat, a steam-valve having a valve-stem and seating against the valve-seat, a horizontal shaft, a horizontally-arranged float-rod provided with a float, a crank-arm 011 the shaft connected with the valve-stem, a crankarm on the shaft connected with the float-rod, an indicator secured to the casing, a valve having a valvestem and controlling the indicator, and a bellcrank lever having one arm connected with the valve-stein oftheindicatonvalt'e and the other arm adapted to be engaged by the projecting end of the stern of the steam-valve.

esaai 2. A boiler feed-regulator comprising a casing having a steam chest provided at top with oppositely-disposed valveseats,a steamoutlet pipe connected to the valve chest, steam-valves having valve-stems and seating against the valve-seats, a horizontal shaft, a lever mounted on the shaft and carrying the valves, a horizontally-arranged float-rod provided with a float, a crank-arm on the shaft connected with the float-rod, an indicator secured to the casing, a valve having a valvestem and controlling the'indicator and a bellcrank lever having one arm connected with the valvestem of the indicator-valve and the other arm adapted to be engaged by the projecting end of one of the stems of the steam; valves.

In testimony whereof We aix our signatures in presence of two witnesses.

OMAR CLARK. ELLsWoRTH E. CLARK.

Witnesses JESSE R. GRoPsEY, Ross A. EMENGER.

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