US600454A - Lieb and charles a - Google Patents

Description

(ModeL) 3 Sheets-Sheet F. STICKER.

STEAM INJECTOR.

No. 600,454. Patented Mar. 8, 1898.

(MndeL) 3 Sheets-Sheet 2. F. STICKER.

STEAM INJECTOR. No. 600,454. Patented Mar. 8,1898.

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nrrn STATES ATENT FFICE.

FRANCIS STICKER, OF NEIV YORK, N. Y., ASSIGNOR TO JULIUS C. DRUCK- LIEB AND CHARLES A. DRUCKLIEB, OF SAME PLACE.

STEAM-INJECTOR.

SPECIFICATION forming part of Letters Patent No. 600,454, dated March 8, 1898.

Application filed July 29, 1897- Serial No. 646,355. (Model) To all whom, it may concern:

Be it known that I, FRANCIS STICKER, of New York, in the county of New York and State of New York, have invented certain new and useful Improvementsin Steam-Injectors; 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.

This invention contemplates certain new and useful improvements in steam-injectors, having reference to the class known as double-jet or lifting and forcing injectors. I

l 5 In a concurrent application for patent, filed July 29, 1897, Serial No. 646,354, I have shown and described a new and improved form of single-operating cock as applied to a singlejet injector and pointed out in that appli- 2o cation the advantages of providing for direct overflow to the atmosphere and for cutting off such overflow and preventing the entrance of air after the column of steam and water has been once established. In the present instance I purpose using such a cock in a double-jet apparatus-that is, a combined forcer and lifter. It is well known that in this class of injectors the surplus steam of the forcer, being greater than the force of the 0 steam supplied the lifter, will enter the discharge-chamber and have a decided tendency to exert a back pressure upon the lifter and thus drive the steam back from the dischargechamber into the combining-tube of the lifter and then into the suction-pipe, as there is not ordinarily any other outlet. By providing forimmediate entrance to the atmosphere of the overflow of the lifter resistance on the part of the overflow of the forcer is avoided and the prompt starting of the injector is insured. This is the primary object of the presentinvention. Someinjectorsheretofore constructed have sought to overcome this back pressure of the surplus steam of the forcer 5 against the pressure of the lifter byproviding an overflow above the forcer, so that the surplus steam thereof will have an outlet into the atmosphere. This surplus upon entering the diseharge-chamber naturally expands and fills the whole chamber before escaping to the atmosphere. The opening for this steam has to be made very large to afford free outlet to avoid back pressure upon the lifter. Having disposed of the surplus steam of the forcer,

it is necessary to form a free outlet to the atmosphere for the lifter in order that the ap paratus may be started by lifting water. Injectors as heretofore constructed are based on the theory that as the overflow located above the forcer will empty the discharge- 6o" chamber of all surplus steam of the forcer that of the lifter will havefree passage through the same overflow when the opening is only large enough in area to carry the surplus steam from the forcing side and the steam from the lifter into the atmosphere. The steam from the lifter having to pass through the expanded steam of the forcer will be prevented from having direct or immediate communication with the atmosphere. This natu- 7o rally takes considerable time and greatly retards the starting and working of the injector.

I overcome all this difflculty by providing a direct outlet to the atmosphere for the over flow of the lifter, such outlet being in line with the latter. In some instances a valve is fitted over the steam-tube of the forcer, so that in starting steam will be admitted only to the lifter, and in another preferred form the forcer and lifter have their steam-tubes leading from a common steam-chamber, and

a wall located in the discharge-chamber has a small opening therein in line between the lifter and overflow-outlet. This wall extends up to near the top of the casing. When water is lifted, it will choke the opening in the wall. This will cut off the direct escape to the auxiliary overflow and will cause the water to rise and find an escape to the overflow over the top of the wall. Thus it will be seen that I provide a third overflow, being supplemental to the overflow of the lifter and yet dependent upon the auxiliary overflow for its outlet. After the water is lifted and the cock partly turned first the overflow of the lifter 5 will be tightly closed and then the overflow of the forcer, preventing any air from being drawn in after the column is once established.

A further object of the invention is to successfully operate a double-jet apparatus by a I00 single cock which will control the overflow and the passage of the column of steam and water to the boiler and which can. be turned either to the right or the left.

Simplicity of construction, efficiency of starting and working, easy accessibility of all working parts, reducing the cost of labor and material, and also reducing the number of parts to a minimum constitute additional objects of the present invention.

The invention will be hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in side elevation. Fig. 2 is a vertical longitudinal sectional View showing the interior parts of the injector. Fig. 3 is a sectional view showing the position occupied by the cock in starting the injector. Fig. 4 is a similar View showing the position of the cock when water has been lifted. Fig. 5 is a like view showing the position of the cock when the injector is feeding to the boiler. Fig. 6 shows different views of the cock detached. Fig. 7 is a modification.

Referring to the drawings, A designates the casing or casting; a, the steam-inlet; a, the steam chamber; a the water-inlet; a the boiler-outlet, and a the overflow-opening.

The forcer B comprises the steam-tube l ,the combining-tube b, and the delivery-tube 19 preferably integral with the combining-tube and screwed or otherwise secured in a wall 6 in line with the outlet to the boiler. The smallest cross-sectional area of the bore of steam-tube b is greater than the smallest crosssectional area of delivery-tube 19 The lifter G embraces the steam-tube d, combining-tube d, and delivery-tube d the bore of these latter tubes being greater than the bore of the steam-tube d. The opposed ends of tubes d d are located in the waterchamber d while the delivery-tube 01 opens into the discharge-chamber D, in which are located the opposed ends of tubes 1) 17.

Within chamber D, extending transversely therein to near the top thereof, is a wall E, which serves to form an overflow-chamber e. Through an upper opening in this wall extends the delivery-tube of the forcer. In the lower end of this wall in line with. the delivery-tube of the lifter is formed one or more small holes or an opening e, opposite to which in wall 19 is the lower or auxiliary overflowopening 6 E is the single cock by which the operation of the injector is controlled. Inasmuch as its construction is identical with that described in my before-mentioned pending application for patent only brief reference need herein be made thereto. The body f of the cock is rounded and tapered and fits in a perpendicular opening in the body of the casing, its lower end extending into the opening a. To a rod f is secured the operating-handle f The body is hollow, forming a chamberf and in one side are upper and lower ports f 4 f the former being designed to register with the delivery-tube of the forcer to receive the primary overflow occurring at that point in starting the injector and the latter to receive the auxiliary overflow through the lower opening 6 A transverse port F, when the cock is turned so as to cut off both overflows, opens up communication between the delivery-tube of the forcer and the boiler-outlet a but until this occurs the solid wall of the body of the cock closes said boiler-outlet, serving in lieu of a check-valve to prevent back pressure. The cock may be turned in either direction.

In practice when steam is admitted simultaneously to both the lifterand forcer the spill occurring between the steam-inlet and combining-tubes of the forcer will ordinarily fill up the chamber D and tend to retard the progress of steam and water from the lifter, thereby preventing the same from reaching the ordinary overflow, as heretofore provided; but in the present instance the overflow from the lifter has direct communication with the atmosphere through the small opening 6', thence through the lower port f of the cock, and then out through the latter. Thus the spill of the forcer within the chamber D will not interfere with the immediate lifting of water. The overflow of the forcer occurring at the end of the delivery-tube thereof will pass through port f of the cock and down through the latter to the outside atmosphere. As soon as the overflow steam of the lifter reaches the outside atmosphere, which is instantaneous, there being no pressure to overcome save atmospheric, a vacuum is created in water-chamber b effecting the lifting of water thereinto, and upon condensing the steam and passing through the tubes into the discharge-chamber D will choke the outlet through wall E and rising in chamber D will pass over said wall to the overflow; but this is only momentary, since the water upon rising and inclosing the tubes of the forcer will effect an immediate condensation of the steam and establish the column of steam and water in the forcer. As this is occurring the operator partly turns the cock, cutting off the auxiliary overflow, (see Fig. 4,) and then upon further turning said cook the primary overflow is closed and communication between the forcer and boiler-outlet is established through port F. Until the cock is turned to permit of the passage of the column to the boiler-outlet the latter is cut off by the said cook. The area of the bore of the delivery-tube of the forcer being smaller than the area of the steam-tube, all the steam will not be able to pass through it, and a portion will issue at the mouth of the combining-tube, expand in chamber D, and find an outlet into overflow-chamber e, and from there to the atmosphere. In this way no back pressure is exerted on the lifter. By providing the direct outlet for the initiatory steam of the lifter through the small opening in line with the delivery-tube thereof I avoid contact with the surplus steam from the forcer, and instantly water will appear.

This relief-opening being too small to allow all the water to pass through, the same will flood the body rapidly and condense all steam in its way. This condensation will take place even with high pressure, as the water rises suddenly, giving the velocity of the steam no chance to drive the water away from the month of the 'combiningtube of. the forcer. In this way I am enabled to obtain quick and certain starting with the use of a single strongly-guided cock under the direct control of the operator, avoiding the use of all valves for varying steam-pressures.

In Fig. 7 I have shown a slight modification, reserving, however, all the advantages of the single cock for controlling the operation of the injector and insuring an immediate outlet for the auxiliary overflow in starting the apparatus. In this form a valve G is employed for controlling the admission of steam to the forcer. It fits against the steam-tube a of the latter and is controlled by a rod g. The intermediate wall in the discharge-chamber g is not employed, the auxiliary overflow being direct to the lower port of the cock. In this form steam is not admitted to the forcer until water has been lifted by the lifter, whereupon the cock is gradually turned simultaneous with the-admission of steam to the forcer by the unseating of valve G. After the column is fully established the cock is further turned, closing the overflow through the upper port, and the column will then pass through the transverse port F to the boileroutlet. 7

The advantages of my present invention are apparent. It will be seen that a double-jet apparatus constructed as herein described is extremely simple, being devoid of all complications; that no valves control the overflow; that immediate outlet for the auxiliary overflow of the lifter is obtained, thereby insuring quick starting and working, and that the parts are not liable to readily get out of order.

I claim as my invention 1. A lifting and forcing injector having an auxiliary overflow in line with the lifter, a primary overflow for the forcer, and a third or supplemental overflow for the lifter, and means for positively closing said overflows as the column of steam and water is established, substantially as set forth.

2. A lifting and forcing injector having an auxiliary overflow in line with the lifter, a primary overflow for the forcer, and a third or supplemental overflow for the lifter, and means for first closing said auxiliary and supplemental overflows, and then said primary overflow as the column of steam and water is established, as set forth.

A lifting and forcing injector having an auxiliary overflow in line with the lifter, a primary overflow for the forcer, and a boileroutlet, and means for first closing said auxiliary overflow, and then said primary overflow, and then opening up communication between said forcer and boiler-outlet, the latter being closed while the overflows are open, as set forth.

at. A lifting and forcing injector having an auxiliary overflow in line with the lifter, a primary overflow for the forcer, and a third or supplemental overflow for the lifter, and a hollow cock for first closing said auxiliary and supplemental overflows, and then said primary overflow as the column of steam and water is established,substantially as set forth.

5. A lifting and forcing injector having an auxiliary overflow in line with the lifter, a primary overflow for the forcer and a boileroutlet in line with said forcer, and a hollow cock open at one end and having separate ports designed to register with said overflows and having a transverse port for connecting said foreer with said boiler-outlet after said overflows have been closed, substantially as set forth.

6. A lifting and forcing injector having a primary overflow for the forcer, and an auxiliary overflow for the lifter, a Wall in the discharge-chamber formed with an opening in line with the litter and auxiliaryoverflow, and means for positively closing said overflows, substantially as set forth.

7. A lifting and forcing injector having a primary overflow for the forcer, and an auxiliary' overflow for the lifter, a wall in the discharge-chamber extending to near the top thereof and having an opening in line with the lifter and auxiliary overflow, and means for positively closin g said overflows, substantially as set forth.

8. A lifting and forcing injector having a primary overflow for the forcer, and an aux iliary overflow for the lifter, a wall in the discharge-chamber formed with an opening in line with the lifter and auxiliary overflow, and a cock having ports designed to register with said overflows and also designed to control the passage of the column of steam and water after said overflows are closed, substantially as set forth.

9. A lifting and forcing injector having a steam-chamber common to both the lifter and forcer, a primary overflow for the latter, an auxiliary overflow for the lifter, in direct line therewith, and a supplemental overflow for said lifter,and a hollow cock having ports designed to register with said primary and auxiliary overflows, whereby in starting the injeetor the said primary and auxiliary overflows will have only atmospheric pressure to overcome, the initial overflow from the lifter reaching the atmosphere independent of the overflow of the forcer, substantially as set forth.

10. A lifting and forcing injector having a steam-chamber common to both the lifter and forcer, a primary overflow for the latter, and an auxiliary overflow for the lifter, in direct line therewith, a Wall in the discharge-chamber having an opening therein in line with said lifter and the auxiliary overflow, and a hollow cock having ports designed to register with said overflows, whereby in starting the injector the overflows will have only atmospheric pressure to overcome, the overflow from the lifter reaching the atmosphere independent of the overflow of the forcer, substantially as set forth.

11. A lifting and forcing injectorhaving a steam-chamber common to both the lifter and forcer, a boiler-outlet, primary and auxiliary overflows for said forcer and lifter, respectively, a wall intermediate of said lifter and auxiliary overflow having an opening therein, and a hollow cock open at one end and having separate ports for said overflows and a transverse port designed to connect said forcer with said boiler-outlet, substantially as set forth.

FRANCIS STICKER.

Witnesses:

JULIUS G. DRUOKLIEB, LEBREOHT HERZIG.

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