US614939A - eberman - Google Patents

Description

No. 6l4,939. l v Patented Nov; 29, |898. A. S. EBERMAN.

INJECTOB FR STEAM BOILERS.

(Application filed Apr. 27, 1898.)

No. 6I4,939. Patented Nov. 29, |898. A. S. EBERMAN.

INJEGTOB FOR STEAM BOILERS.

(Application filed Apr. 27, 1898.)

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ALBERT S. EBERMAN, OF BALTIMORE, MARYLAND, ASSIGNOR OF ONE-HALF TO ENOOII HABLAN, OF SAME PLACE.

INJECTOR FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 614,939, dated November 29, 1898. Application tiled April 27, 1898. Serial No. 678,964. (Model.)

To all whom t may concern.-

Be it known that I, ALBERT S. EBERMAN, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Injectors for Steam-Boilers ;V and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in injectors for supplying feed to steam-boilers, its object being to simplify the construction and increase the efficiency by giving a positive simultaneous action to the several valves by manipulation of the main stem, which valves are so arranged with relation to eachv other and to the stem that 'one will open slightly in advance of the other, admitting steam to each chamber and steam-j et successively, thereby accelerating the action as each valve is successively opened and also at the proper time opening and closing the valve for the overiiow.

To this end it consists in certain details of construction and arrangement of parts hereinafter described in the specification and illustrated in the accompanying drawings, forming a part of this specification, and in which- Figure l is a central longitudinal section with the parts in the positions they occupy When in operation. Fig. 2 is a like View showing only the rst steam-valve partially opened when the steam is rst turned on or admitted. Figi-3 is a similar view showing a slight modilication.

Like letters and numerals indicate corresponding parts.

A represents the shell or main casing of the injector, having at the top, on one side thereof, a branch or pipe B for connection with a steam-pipe, and on the other side is a lateral projection A', and water and steam passages and chambers are formed therein, as Will be presently described. From the outer side of lthe lateral projection is a short pipe or branch C for connecting a water-supply pipe, Which may lead to any source of supply. The pipe or branch B connects with the steam-passaoe.

F)lhe delivery vconnection D leads to thev G connects with the steam-passage F through 6o a steam-jet nipple 1 above and with'the water passage or chamber G by means of a nozzle 2. The nipple 1 and nozzle 2 are screwed into suitable seats formed for them in the casing and in such position that they are practically in alinement and at right angles to the water-pipe C. At the top of the casing is a hollow cap H, screwed into a socketed and tapped projection on the casing. This construction enables the nipple 1 and nozzle 2 to 7o be placed in their proper positions or to be removed for cleaning or repair.

In a thickened and apertured part of the casing is formed a valve-seat 5 for the reception of the end of the sliding combined injector or discharge-nozzle and combiningtube 4, which is formed vat one end as a valve 6 and which when closed prevents the passage of the water into the overiioW-chamber G. This tube isformed near its discharge 8o end with a piston 7, which When the machine is not in operation rests on a shouldered abutment on the end of delivery D. Piston 7 is slightly smaller than the chamber in which it is `located and when the machine is operated permits the How of some water around it until the overflow-valve a5 is seated.

The parts just described are substantially in alinement with the nipple 1 and nozzle 2,

and the parts are connected with the casing 9o by a suitable coupling, as shown.

An overioW-chamber Gis provided, and it is in communication With the branch B and also with the delivery connection when the valve 6 on the end of thecombining-tube is 95 open. Valls c c in the casing between the lifting chamber or passage F and overflowchamber G form the pressure passage or chamber N.

The main shell or casing A has at the top roo an opening, into which is screwed an internally-threaded sleeve a, and on the outer end of the sleeve is a threaded cap a', both sleeve and cap being apertured for the passage of the main valve-stem.

A valve-seat a" is formed in a part of the casing between the lifting-chamber F and the branch B, and circular openings are formed through the walls of that part of the casing which forms the pressure-chamber N. Below said chamber, in the wall of the casing which incloses the overflow chamber or passage G at one side and the outer wall of the main casing on the other side, is a valve-seat a'" for the overflow-valve. At the end opposite the operating` lever or handle for the valve-stem an outlet-nozzle A" for the overflow is screwed into the casing.

A"' is the main valve stem or rod. It has a suitable lever or handle A"" at the projecting end thereof for operating same. At some distance from the end of the stem it is screwthreaded at m to engage the internallythreaded sleeve a- Below the threaded part of the stem is a valve 61"", and near the opposite end of the stem is a valve a5. These two valves are mounted in reverse positions on the rod, or in such relation that one is closed and seated in one direction and the other in the reverse direction.

Between the two valves just described are two annular flanged projections or pistons a6 and al, a being adapted to open and close the aperture connecting chamber F and chamber N as the valve-stem is turned in one direction or the other and al being adapted to keep closed under all conditions the aperture between chambers N and G.

The operation of the apparatus is as follows: The valve-stem is rotated and the valve am' raised a short distance from its seat, as shown in Fig. 2, thereby admitting steam to chamber F, passing through nipple 1 and nipple 2, creates a vacuum and lifts the water, causing it to flow into chamber G (valve 6 not being yet seated) and thence by valve a5 out through overflow A". The valve-stem being further revolved opens the apertures connecting chambers `F and N, and the steam joins the lifted water as it leaves the nipple 2. This steam-forced water passing through combining-tube creates a pressure on piston 7 at discharge end of same, forcing it endwise until it is seated at 5, the valve-stem is revolved until valve a5 is closed, the checkvalve is forced open, and water flows into boiler.

Fig. 1 shows the injector in full operative condition. Steam is being admitted to both lifting and pressure chambers or passages, as shown by the arrows at :c y, the water is supposed to be passing into the boiler, and the outlet-valve for the overflow-chamber is closed.

In Fie. 3 I have shown a modified form of the injector, which, however, operates on the same general principle.

The main casing X, the lifting-chamber F', ure-chamber N', overflow-chamber G',

nipple or steam-jets l' 3', nozzle 2', combining-tube 4', and steam and water branches or pipes, excepting that the latter are arranged at right angles to each other instead of in alinement, are the same in all the views.

The differences in structure and which I believe to be equivalents will now be described.

Fig. 3 shows the modified form of injector when in operation. The steam-jet or nipple 1 and nozzle 2' are screwed into tapped portions of the case adjacent to the water branch C and in the same relation as in Fig. 1. The steam, however, is admitted through the branch ll to the lifting-chamber and steamjet or nipple 1', and the surplus steam passes primarily into the lifting passage or chamber F. Screwed into the wall of the pressure chamber or passage is a nozzle or steam-port 3', and it is arranged directly over the mouth of the combining-tube 4.', which, as already stated, is of the same constructionand arranged in substantially the same manner as in Fig. 1. The main casing X has a valveseat d, which when open forms an outlet for the overflow-cham ber G to the overflow outletnozzle. The main valve-stem S carries on one end a piston-valve S'. The free end of the valve-stem is beveled, as at S", so that seated it will close the outlet in the overflow-nozzle. The valve-stem is reciprocated in suitable bearings formed in the walls of the casing and a plug screwed therein at the handle or lever end of the stem. A handle or lever T is pivoted at the end of the valve-stem for operating the same, and said lever or handle projects a short distance beyond its pivotal point, and to its extreme end is pivoted a link T', and the other end of said link is pivoted to the valve-stem a suitable distance from the handle or lever T. The walls of the pressure chamber N' have holes or apertures piercing same, as in Fig. 1, and the enlarged end S' of the valve-stem closes the opening or port which admits steam from the lifting-chamber to the pressure-chamber when moved in one direction and opens the outlet-valve, while the steam-port is closed and the outlet-valve opened when moved in the opposite direction.

The operation of the injector is the same as before described, with the exception that steam is admitted directly to the steam-jet or nipple at the end or top and that it is admitted to the combining-tube from the pressure-chamber through a steam-jet or nozzle instead of directly into the combiningtube, as in Fic. 1.

Minor changes may be made within the scope of the invention without departing from the spirit or sacriiicing any of the advantages thereof.

IIaving thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-Y- l. An injector for steam-boilers, having branches or pipes for the admission of steam and water, a lifting passage or chamber, a

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pressure-chamber, an overflow-chamber, a steam-j et or nipple, a longitudinally-movable combining tube with a valve at each end thereof and valves for regulating the pressure of the steam and iioW of the Water substantially as described.

2. An injector for steam-boilers having branches or pipes for the admission of steam and Water, a lifting-chamber, a pressurechamber, an overflow-chamber, means for conveying the Water to the boiler, a valve for admitting steam to the lifting-chamber, and a valve for the overflow, both mounted on a rigid longitudinally-movable valve-stem in reverse positions, so that by the operation of the stem the one valve is opened and the other closed and vice versa, substantially as described.

3. An injector for steam-boilers having branches or pipes for the admission of steam and Water, a lifting chamber, a pressurechamber, an overflow-chamber, means for conveying the Water to the boiler, a valve for admitting steam to the lifting-chamber and a valve for the overflow-chamber, mounted on a rigid longitudinally-movable valve-stem in reverse positions and a valve or piston intermediate of said valves, for opening and closing a port in the Walls of the pressurechamber, all simultaneously operated, substantially as described.

4. An injector for steam boilers having branches or pipes for the admission of steam and water, a liftingchamber, a pressurechamber and overflow-chamber, means for conveying water to the boiler, a valve for admitting steam to the lifting-chamber and a Valve for the overflow-chamber mounted on a rigid longitudinally-movable valve-stem in reverse positions, and a valve or piston intermediate the other two valves arranged in such relation to its port and the lifting-valve, that the lifting-valve Will be opened slightly in advance of the piston-valve, and all the valves simultaneously operated, substantially as described.

5. An injector for steam -boilers having branches or pipes for the admission of steam or Water, a lifting-chamber, a pressure-chamber, an overflow-chamber, means for conveying Water to the boiler, a valve for admit-ting steam to the lifting-chamber and a valve for the overflow-chamber, mounted on a rigid longitudinally-movable valve-stem in reverse positions and a valve or piston intermediate of said valves, for openi'ng and closing a port in the Walls of the pressure-chamber, all simultaneously operated, substantially as described.

6. An injector for steam-boilers having branches or pipes for the admission of steam and Water, means for conveying Water to the boiler, a lifting-chamber and an overflowchamber in practical alinement, a pressurechamber between them, a screW- operated rigid longitudinally-movable valve-stem carrying one valve for the lifting-chamber, one for the pressure-chamber, and one for the overflow, all simultaneously operated, substantially as described.

7. In an injector for steam-boilers, the combination of a steam-jet lifting device, With a steam-jet forcing device, a longitudinallymoving stem provided With valves arranged to admit steam to the forcing device and close overflow When moved in one direction, and to open overiioW and shut od steam from forcing device When moved in an opposite direction, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

ALBERT S. EBERMAN.

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