US741448A - Steam-trap. - Google Patents

Description

No. 741,448. PATENTED OUT. 13, 1903.

J. H. BLESSING.

STEAM TRAP.

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PATENTED OCT. 13 1903.

I. ELESSING.

STEAM TRAP.

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UNITED STATES I atented October 13, 1903 JAMES H. BLESSING, OF ALBANY, NEW YORK.

STEAM-PTRAP.

$PECIFIQATION forming part of Letters Patent No. 741,448, dated October 13, 1903.

Serial No. 1531187. (N model.)

as will enable others skilled in the art to which 7 it appertains to make and use the same.

My invention relates to steam-traps adapted to receive the condensation of steam from asystem and return it into a'steam-generator, and has for its object to accomplish such purpose without the aid of shifting balls, weights, detents, or similar devices, and thereby produce a trap of any desired size which shall be simple and durable in construction and positive and effective in operation. This I accomplish by means of two buckets arranged within an outer casing or shell, the inner bucket being movable and adapted to control a steam-valve, with discharge-pipes leading from said outer casing and inner bucket to the water-space of a steam-generator, and a steam-pipe connecting the steam-space of the generator with such outer shell or casing and provided with a valve operated by said movable bucket.

In the accompanying drawings, Figure 1 is a side elevation of a steam-trap embodyin my invention and connected with a steam-' generator. Fig. 2 is a vertical transverse section of the trap itself. Fig. 3 is a plan view of the top of the trap;'and Fig. 4 is a vertical transverse section on the top of the trap,taken on'line 1 lot Fig. 3.

As illustrated in the drawings, the outer' casing of the trap consists of a shell 1, having a top 2 bolted thereto. The top of the cas: ing is preferably provided with an inlet-chamber'3, which is connected with an inlet-pipe 4, provided with a check-valve 4, through which the condensed steam flows into the casing. Astationary bu cket5 is arranged within the shell and is secured in position in any desirable manner, preferably by means of brackets 6, secured to the shell 1. Amovable bucket 7 is arranged within thestationary bucket and is provided with means for guiding its vertical movement, such as a socket-head 8, which engages a stem 9, se-

cured to the lower portion of the stationary bucket. A vertical movable rod is connected with the socket-head 8 in any suit-able manner, preferably by means of a pivot connection 8*. The upper end of the rod 10 engages a socket-head 11, secured to the top 2 of the outer casing, and guides the upper end of said vertical rod. The upper portion of the rod 10 is provided with lugs 10*, between which is arranged the end of a lever 12, which is pivoted to a valve-head 15, connected with the top of the trap. The opposite endof the lever 12 engages a valve-stem 13, the upper and lower ends of which are guided in sockets 14 and 14*, formed in the valve-head 15. The valve-stem 13- is provided with an annular disk 14, adapted to cooperate with a valve-seat 14, the opening of which valve communicates with an outlet 16 in the valvehead 15, with which a steam-pipe may be connected, leading to a steam-generator. An exhaust-Valve 17' is also connected with the lever 12, the upper end of which is guided in a socket 17, and its lower end is provided with laterally-extending flanges, which are guided in a socket 17 having an opening leading to the atmosphere or into an exhaustpipe 28, connected therewith. A dischargepipe 21 is secured to the top of the casing and extends down to the lower portion of the movable bucket 7. The upper end of the dis' charge-pipe 21 communicates with achamber 19, which is preferably provided with an airvent 20 of suitable construction. An outer discharge-pipe 18 is connected with said chamber 19 and with a discharge-pipe 22, leading from the lower portion of the outer casing by means of cross connection 27 and provided with a check-valve 23. A return-pipe 24 extends from said cross connection to the water-space of -a steam-generator. The top of the trap is provided with a hand-hole and plate 29, by means of which the inner contents of the trap may be reached. 3

When this device is in use, enough water always remains in the stationary bucket to overcome the weight of the movable bucket 7 when empty and raise such movable bucket and the rod 10, connected therewith. The lower lug 10 of the upper end of said rod then lifts the inner end of the lever 12 and brings the annular disk 14 down on its seat and closes the valve-opening, so as to prevent any steam from the generator entering the casing. The condensed steam from a system is then free to enter the casing through the inlet-pipe 4 and the check-valve 4, connected therewith, and passes into the receiving-chamber 3 and through the outlet-port 3 of said chamber into the stationary bucket 5. When said stationary bucket becomes full, the water overflows into the chamber between the outer casing and said stationary bucket. This water continues to rise until finally it reaches the upper edge of the movable bucket 7 and flows into and fills said bucket. When the movable bucket 7 becomes filled with water, it descends of its own weight and carries with it the rod 10, secured thereto, and the upper lug of said rod presses downward the inner end of the lever 12,which thereby raises the valve-disk 14 from its seat and permits steam from the generator to enter the casing through said valve. The pressure within the casing and the generator then becomes equalized, and as the casing is at a higher elevation than the generator the Water in the chamber formed by the outer casing and the stationary bucket 5 passes through the lowerdischarge-pipe 22 and the coupling 27 into the pipe 24, leadingto the water-space of the steam-generator. The air remaining in the chamber 19 is permitted to escape through the vent 20, and the water in the inner movable bucket 7 passes out through the inner discharge-pipe 21, chamber 19, the outer discharge-pipe 18,0heck-valve 23,and cross-coupling 27 into the pipe 24:. The lower outlet-pipe 22 is made larger in diameter than the discharge- pipes 21 and 18, so as to permit the water in the chamber between the outer casing and the inner bucket 5 to pass out of the easing more rapidly than the water in the inner bucket 7,which thereby makes the level of the water in said chamber lower than the level of the water in the inner bucket 7, which is somewhat retarded by the smaller dimensions of the pipes 18 and 21 and the elbows and check-valves connected therewith. When sufficient water has passed out of the movable bucket 7 to enable said inner bucket to be floated by the water remaining within the stationary bucket 5, the inner bucket rises and the rod 10, connected with said bucket, causes the lower lug on said rod to raise the inner end of the lever 12 and bring the valvedisk 11 down toward its seat; but as the disk 14 is brought down near its seat the supply of steam from the generator to the interior of the casing is almost but not entirely shut off, for the reason that some water still remains in the movable bucket 7 and the water within the stationary bucket 5 is not sufficient to raise the movable bucket 7, with the water remaining therein, so as to close the valve-disk 1t down closely onits seat. When the valve-disk is brought close to its seat,

tion of the steam-pressure within the casing and the generator becomes disturbed, and the water no longer passes out of the casing and inner bucket into the water-space of the generator; but after the equalization of the steam-pressure within the casing and generator has become disturbed and the water no longer passes out of the casing and inner bucket into the generator the water remaining in the inner bucket 7 being at a higher level than the water in the chamber between the outer casing and the bucket 5 is siphoned out of said chamber through the pipes 21, the chamber 19, the outer discharge -pipe 18, cross-coupling 27, and discharge-pipe 22 and passes back into the chamber between the outer casing and the stationary bucket 5, and so continues until the water in the inner bucket is at substantially the same level as the water in the outer casing. Enough water remains in the movable bucket, however, to cover the lower end of the discharge-pipe 21. When the water in the movable bucket 7 has reached the level of the water in the outercasing, theinner bucket 7 has become sufliciently light in weight to be raised to its full extent by the water in the stationary bucket 5, and by means of the rod 10 connected therewith the valve-disk 14 is brought down firmly on its seat. As this valve is closed and the steam entirely shut oif from the casing the exhaust-valve 17is opened by the same movement of the lever 12 and the steam within the casing permitted to escape. Whenthe valve leading from the steam-generator is closed and the exhaust-steam has passed out through the exhaust-valve 17, the condensation of steam from a system is again permitted to flow into the stationary bucket 5 and fill said bucket and the chamber between said bucket and the outer casing and, finally, the inner movable bucket, which again drops of its own weight and opens the valve operagain enter the casing and equalize the pressure in the casing and steam-gene1'ator,when ated by the lever 12 and permits steam to the casing and central movable bucket empties as before.

I do not desire to be limited to the specific construction and arrangement of the parts shown and described herein.

My invention includes, broadly, a casing haviugasteam-pipe connected with the steam portion of a steam-generator, and a dischargepipe connected with the water-space of such a generator when used with an inner movable bucket arranged within a stationary bucket and adapted to operate a valve connected with said steam-pipe and dischargepipes leading from said inner bucket back into said casing.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination with a steam-generator, of a casing having pipe connections with but not in contact therewith, the equaliza- 1 the steam portion and water portion of such IIO generator, a stationary bucket within said casing, a movable bucket within said stationary bucket, a steam-valve operated by said movable bucket, and discharge-pipes adapted to siphon the water from said movable bucket back into said casing, substantiaily as shown and described.

2. The combination with a steam-generator, of an outer casing, a pipe connection between the steam-space of said generator and said casing, a stationary bucket within said casing, a movable bucket within said stationary bucket, a steam-valve operated by said bucket, a discharge-pipe extending into said movable bucket, outer discharge-pipes connected with said pipe and with the lower end of said casing, and pipe connections be-.

tween said outer discharge-pipes and the water-space of a steam-generator, substantially as shown and described.

3. The combination with an outer casing, of a stationary bucket, a movable bucket, a steam-valve operated by said movable bucket, a discharge-pipe extending into said movable bucket, outer discharge-pipes connected with said pipe and the lower portion of said casan outer casing, of a stationary bucket, a

movable bucket, and pipe connections .bebetween the interior of said movable bucket and the lower portion of said casing, adapted to siphon the contents from said bucket into the interior of said casing, substantially as shown and described.

5. The combination with an outer casing, of a stationary bucket within said casing, a movable bucket within said stationary bucket, a valve operated by said movable bucket, and discharge-pipes connected with said movable bucket and the lower portion'of said casing, adapted to siphon the water from said movable bucket into the interior of said casing, substantially as shown and described.

In testimony whereof I aflix' my signature in presence of two witnesses.

' JAMES H. BLESSING. Witnesses:

ROBERT W. HARDIE, BORDEN H. MILLS.

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