US601258A - smith - Google Patents

Description

(No Model.) I

G.JOHNjSON 8v M. BSMITH. AUTOMATIC BOILER FEE-DBR.

No. 801,258. Patented Mar. 29,1898.

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INVENTO w/TNEssEs J.

` ATTHN UNITED STATES i PATENT OFFICE.

l GEORGE JOHNSON AND MURPHY F. SMITH, OF ALLENPORT, PENNSYLVANIA, ASSIGNORS TOv THEMSELVES, AND HARRY C. DRUM, OF CALIFORNIA,

PENNSYLVANIA.

srEcriucAT'roN forming'part of Letters Patent No. 601,258, .lated March 29, 189e.

Application iilecl February 2 1897. Serial No. 621,669. (No model.)

To all whom it may concern:

Beit known that we, GEORGE JOHNSON and MURPHY F, SMITH, of Allenport, in the county of Washington and State of Pennsylvania,

5 have invented a new and Improved Automatic Boiler-Feeder, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved boiler-feeder which is sim- Io ple and durable in construction and arranged for automatically keeping the boiler supplied with water at a normal level.

The invention consists principally of a floateontrolled pi'ston carrying a valve vfor admitv ting and shutting off the water to and from the boiler.

The inventionA also consists of certain parts and details and combinations of the same, as will be fully described hereinafter and then 2o pointed out in the claims.

Reference is to be had to the accompanying drawing, forming a part of this specieation, in which the gure represents a sectional side elevation of the improvement.

The improved boiler-feeder is provided with a water-supply pipe A,connected with a pump, Water-main, or other suitable water-supply, the said pipeV beingalso connected with a valve-casing B, connected by a pipe C with 3o the water-compartment of the boiler E.

The valve-casing B is provided with the usual valve-seat B', on which is adapted to be seated a valve F, formed with the valveseat F, adapted to be engaged by a small 3 5 valve G, secured on avalve-stem GQ fitted to slide vertically in suitable stuffing-boxes H and H', of which the stuffing-box H is secured to the casing B and the stuffing-box H is attached to the under side of a cylinder J, con- 4o taining a piston I, rigidly secured to .the upper end of the said valve-stem G. y

From the valve stem G' extends downwardly a reduced valve-stem G2, carrying at its lower end a collar G2, adapted to engage a sleeve F2, projecting downwardly from the large valve F, the said sleeve F2 forming, with the valve F, openings or ports F2, leading to the valve-seat F. When the valve G is seated on the seat F', then the collar G3 is a suit- 5o able distance below the sleeve F2, so that the valve G when moving upward off its seat F leaves the valve F still at its seat until the said collar G3 finally engages the sleeve F2 and starts the valve F off its seat B. Now it is evident that when the valve G is lifted off its seatthen water under pressure can pass through the valve-casing to press with equal force on both sides of the large valve F, so that the latter is easily unseated by the upward pressure of the collar G3 and the sleeve F2. The piston I, previously mentioned, is normally held in a lowermost posi` tion by a spring I', arranged in the cylinder J. Into the bottom of the said cylinder, however, opens a steam-pipe K, connected with a valve N, arranged within the usual safety water-column D yand connectedby a lever' O with the stem P of theoat P, rising and falling with the water contained in the safety water-column D. The lever Oy is engaged by a collar P2, secured on the upper end of the stem P', and the Alatter is provided with an adjustable collar P2, adapted to engage the free end of the lever Q, arranged to make contact with an electric or whistle alarm R of any approved construction, so that the float P, on sinking with the falling of the waterlevel in the boiler E and safety water-column D, first causes an opening of the valve N, and, finally, a contact of thevlever Q with the alarm R by the colla Ps striking the lever Q. Now

whenA the water-levelA of the boiler E falls the valve N is first opened andsteam can pass from the safety water-column D through the pipe K to the lower end of the cylinder J to lift the piston I and valve-stem G to move the valve G off its seat F on the large valve F. Water can now `flow from the pipe A through the casing B to equalize the pressure on thc valve F, so that the latter is unseated and a full iow of water takes place through the casing B into the safety Water-column and boiler E. When the water rises in the boiler and safety water-column D, then the iioat P moves upward, and consequently the valve N is again closed to cut oif the steam through the cylinder J, and as the piston I is provided with a leak-aperture I2 steam can pass into the upper end of the cylinder J and from the latter through an outlet-pipe J to the outside.

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IVhen the piston I moves upward in the cylinder J, it compresses the spring I and iinally engages the stem S of the spring-pressed valve S, seated on the valve-seat S2, secured to the cap of the cylinder J, the said cap being connected by a branch pipe K/ with the pipe K. 'Ihus when the piston I moves into an extreme uppermost position the valve S is unseated to admit steam to the cylinder J to return the piston I, as the steam-pressure is now equal on both sides of the piston I.

From the lower end of the cylinder J leads a drain-pipe J 2 for carrying o water of condensation accumulating in the said cylinder. In the bottom of the valve-casing IS screws a valve-stem T, adapted to engage the under side of the collar G3 to enable the operator to unseat the valve G whenever it is desired to pass water directly into the boiler from the supply-pipe A for cleaning and other purposes. In case the pump'does not act, or the water-supply to the casing B is interrupted for some reason or other, then the water in the boiler falling still farther finally causes the ioat P to engage with its collar P3, and the lever Q, to set the alarm in operation, so as to notify the engineer of the impending danger. New it will be seen that by the arrangement described the device is completely automatic in operation and requires Ano attention whatever on the part of the engineer.

Having thus fully described ourinvention, we claim as new and desire to secure by Letters Patent- 1. In a boiler-feeder, the combination with a cylinder connected with the steam-compartmentof the boiler, avalve for controlling the admission o1' steam to the cylinder, a piston in the cylinder, and a valve in the water-supply and operated by the piston, of a second and smaller valve in the water-supply for admitting water to equalize the pressure on the first-named valve, said second valve being also operated by the piston, substantially as described.

2. In a boiler-feeder, the combination with a cylinder connected with the steam-co1npartment of the boiler, a valve for controlling the admission of steam to the cylinder and a piston in the cylinder, of a valve in the watersupply and having a valve-seat on its upper surface, andasecond and smaller valve on the said valve-seat, said second valve being connected with the piston and loosely connected with the iirst-named valve, substantially as described.

In a boiler-feeder, the combination with a cylinder connected with the steam-compartment of the boiler, a valve for controlling the admission of steam to the cylinder and a piston in said cylinder, of a valve in the watersupply and having a valve-seat on its upper surface, a second and smaller valve 011 the said valve-seat, a valve-stein projecting from the smaller valve and connected with the piston, and a second valve-stem from the lower face of the smaller valve through the larger valve and provided with a collar at its end, substantially as described.

4. In a boiler-feeder, the combination with a cylinder, and a float-controlled valve for regulating the admission of steam to said cylinder, of a piston in the cylinder, a valve in the water-supply and having a valve-scat 011 its upper surface, a second and smaller valve on said seat, and a valve-stem on which the smaller valve is mounted, one end of the said stem being connected with the piston and the other end loosely connected with the larger valve, substantially as described.

5. In a boiler-feeder, the combination of a cylinder connected with the steam-compartment of the boiler, a valve for controlling the admission of steam to the cylinder, a float connected with said valve to open and close the same by the rise and fall of the water, a spring-pressed piston in the cylinder, a valve in the water-supply and having a valve-seat on its upper face, and a second and smaller valve on the said seat, said second valve being connected with the piston and loosely connected with the first-named valve, substantially as described.

G. In a boiler-feeder, the combination with a valve in the water-supply, of a cylinder having its lower end connected with the steamcompartment of the boiler, a Heat-controlled valve for regulating the admission of steam to the cylinder, a spring-pressed piston in the cylinder and connected with the stem of the valve in the water-supply, and a valved connection between the upper end of the cylinder and the pipe connecting the said cylinder with the steam-compartment of the boiler, substantially as described.

7. A boiler-feeder, comprising a supplyvalve connected with a water-supply and with the boiler, a spring-pressed piston attached to the stem of the said valve, a cylinder containing the said piston, a valve in the steamcompartment of the boiler, a pipe connecting the said steam-valve with the said cylinder, a ioat rising and falling with the water in the boiler and connected with the said steamvalve to open and close the same, a branch connection between the said pipe and the cylinder, and a valve in the branch connection and arranged to be opened by the said piston, substantially as shown and described.

GEORGE JOHNSON. MURPHY F. SMITH. lVitnesses:

R. B. DRUM, HARRY O. DRUM.

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