US332953A

US332953A - Injector

Info

Publication number: US332953A
Authority: US
Publication date: 1885-12-22
Anticipated expiration: 1902-12-22

Description

(Model.)

W. J. SHE'RRIPF.

INJEGTOR.

Patented Deo. v22, 1.885.

Mzses.

07M fmof/L' UNITED STATES PATENT erica.

WILLIAM J. SHERRIFF, OF ALLEGHENY CITY, PENNSYLVANIA.

INJECTQR.

SPECIFICATION forming part of Letters Patent No. 332,953, dated December 22,1885.

Application filed December 10, 1884. Serial No. 149,943.

To a/ZZ whom it may concern:

Be itknown thatl, WILLIAM J. SHERRIFF, of Allegheny City, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Injectors; and Ido hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which- Figure l is a longitudinal sectional view of my improved injector on the line a: x of Fig. 2. Fig. 2 is an edge view of the same.

Like letters of reference indicate like parts wherever they occur.

rlhe object of my invention is to simplify, cheapen, and improve the construction of injectors.

In the drawings, a is the shell, having its body divided into three compartments, c', a", and d, by diaphragms or partitions a3 and at. Within these partitions are two nozzles, b and c, the nozzle b being a steam-nozzle, and c a water ejecting or lifting nozzle. The nozzle b extends into the chamber a from the steamchamber d, and the nozzle c extends from the chamber c into -the chamber a2 through the diaphragm at. A partition,a5,supports a third nozzle, e, which establishes communication be` tween the chamber a2 and a chamber, a6. The nozzle e is in line with the other two nozzles, b and c. The chamber c6 has a direct lateral communication witha discharge-pipe, f, which leads to the boiler. The shell c is provided with a steam-pipe, rZ, leading into the steam-chamber d, and the latter chamber is separated from the other parts of the inj ector by the partition a3, except a steam-port, g, communicating with the steam-chamber and the chamber a through the partition c3 and the nozzle b, which admits steam from the chamber Z into the chamber c. rEhe chamber a is the induction-chamber, and the shell ais provided with two induction-pipes, Zt7t,which enter this chamber directly from opposite sides of the injector. At the base of the shell, and out of line with thenozzles bc e, isa waste or overflowporaz', which communicates with the chamber a6. The nozzles are put in place through openingsin the upper and lower sides of the shell a, which are closed by screwplugs 7c and Z, these openings being in alignnient with the nozzles. The upper plug, Z,

(Model.)

. serves as a fulcrum for a lever, m, which is pivoted thereto. Connected with the lever m on one side of the fulcruni Z is a stem, n, having a valve, n', at its lower end, arranged to close the steam-port g by being seated in a conical seat at the upper end of the port. On the other side of the fulcrum Z, and pivoted to the lever ms another valve-stern, 'having a valve, Z2, at its lower end, arranged to close the overflow-port, Z when depressed to its scat thereon. The valves n and t2 are adj ustable by changing the height of the fulcrum, which may be done by thc screw-plug fitting into the shell on.

The operation of the device is as follows: To start the injector', the port g is closed by depressing the lever m, andthe overflow-port t' is opened by the same operation. Steam being admitted into the pipe d passes from the chamber d through the nozzle b into and through the head c, producing a vacuumin the chamber a, raising water into this chamber through the induction-pipes It t, and discharging it through the head c into the nozzle e and chamber a, whence it escapes through the overliow t'. lVhen the current is established, theleverm is slowly raised, thereby gradually opening the port g and closing the discharge-port t'. Steam will then pass through the port g into the chamber Zz and around the nozzles c and e, between which it forms an annular jet,which strikes the water in the nozzle e and impels it therethrough and through the chamber a6 to the overflowport 'Z'. When steam has ceased to come through the latter opening, and the chamber a6 is well filled with water, the lever m is raised so as to open the steam-port g and to close the overflow-valve t' completely, when the water will escape through the pipef to the boiler. A slow regular lift of the lever-handle is all that is necessary to eii'ect the whole of this operation, because the closing. of the valvez and the opening of the valveg are simultaneously performed, and by the time when these parts are respectively opened and closed the 4current of water through the injector will have been well established. Cold water from a well or hydrant is drawn into the chamber a through the induction-pipe h. The opposite pipe, h', is connected with the condenser or waste-water chamber usual in boilers, and

ICO

heated Water is drawn from thence. should be had that not enough hot wateris induced into the chamber a that when mingled with cold water from the pipe h the resultant may be unduly hot and prevent the necessary condensation of steam in the ejectorhead- The amount of hot Water used can be conveniently regulated by athrottle or cock on the pipe h. Vhen the hot-water pipe 7L is not desired to be used, it may be uncoupled, and the hole in the injector-shell closed by a plug.

The advantages of the construction of the induction-pipes herein shown are that they introduce the Water directly into the chamber a without allowing it first to come into contact with and chill the other parts ofthe injector, and by the use of two pipes I am enabled to utilizethe heated water of the con-v densingchamber in a manner unknown heretofore.

The construction of the valves n and t2, in combination with the simple lever m, en ables the valves to be opened and closed by a simultaneous and gradual movement of the lever-handle, and as both valves seat down'- ward in the direction of the impelling force of steam or water they will securely close their respective ports.

It will be observed that the plugs Z and k Care l and nozzles e, c, and b are all in alignment, 3o

and that by removing the plugs all the nozzles maybe unscrewed and removed for the purpose of repairing Without the necessity of detaching the injector from the boiler.

I am aware that injectors have been employed having a steam-valve and an overliowvalve arranged to be operated by the movement of the same lever, and I am also aware that nozzles and plugs have been arranged in an injector in a line with each other, and I do not desire to claim these features, broadly.

Having thus described my improvement so that others skilled in the art to which it appertains may manufacture and use it, what I claim as my invention, and desire to secureby Letters Patent, is-

The combination, in aninjector, of a lifting or ejecting head or nozzle, a Coldwater-induction pipe, and a hot-waterinduction pipe,

both of said pipes communicating with the said liftinghead, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 2d day of December, A.. D. 1884.

VILLIAM J. SHERRIFF. NV i t nesses:

W. B. CORWIN, THOMAS W. BAKEWELL.