US367138A - Albeet s - Google Patents

Description

(Model.)

A. S. EBER MAN.

INJBGTOR.

Patented July 26, 1887.

N. Pneus. mwmmgnpher, wnningm nc.

UNITED .t STATES PATENT EEICE.Y

' ALBERT S. EBERMAN, OF BALTIMORE, MARYLAND.

iNJEeToR.

SPECIFICATION forming part of Letters Patent No. 367,138. dated July 26, 1887.

Application filed April 14, 1887. Serial No. 234,831. (Model.)

T0 @ZZ whom, it may concern,.-

, Be it known that I, ALBERT S. EBERMAN, of Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Injectors; andIdo hereby declare the following to be a full, clear, and exact description ofthe 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 inY injectors for supplying feed-water to steamboilers or raising and forcing liquids against pressure; A

It is one object of my invention to produce an injector which shall be automatic in its action of starting and restarting, so that when the injector is put in proper communication with steam and water supplies it will automatically start itself and force water into the boiler which supplies itwith steam or against a pressure equal to said steanrpressure; and, further, to combine with this automatic action the ability to so operate over the entire range of-steam-pressure, and under any of the various circumstances as to source of watersupply to which injectors are usually subjected, without requiring any adjustment of any of its parts or the throttling of either the steam or water supplies7 as has been usually required by injectors made to be automatic in their action.

A further object of my invention is to provide an injector which, when notin operation, will automatically so adjust itself that air is freely admitted to it and its connecting-pipes, and allowing the water to freely drain there- '.from, thus leaving the instrument in the best condition for restarting when stopped temporarily, also, obviating all danger of damage from freezing when not in operation during cold weather and with pipes in exposed places.

A further object is to simplify the construetion and provide an injector that will be inexpensive to keep in repair, and to secure a device of increased effectiveness, reliability, and convenience. V

With these ends in View my invention consists in certain features of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure l represents a vertical longitudinal section of an injector embodying my presentinvention. Fig. 2 is a transverse section on line fu o, Fig. l.

boiler; C, the water-connection, leading to a well or other source of water-suppl y.

Inwardly from thesteam-branch B of the ease A a steamchamber, E, is formed, which is made to extend or branch toward the rear end, and also toward its center, so that steam admitted to said chamber E simultaneously passes to both the lifting and forcing parts of the injector. In the rear end of the case A is an opening, F, for the purpose of facilitating the insertion of the internal parts, which opening is closed by a screw-threaded cap, H.

Through the rear partition, J, between the steam-chamber E and the water-chamber K, the steam-jet 1 is placed, forward 0f which, and on the same axial line through the forward partition, L, between the steam-chamber E and water-chamber K, the combining or water tube 2 of the lifting or first injector is placed. The combining-tube 2 is elongated on its forward end and made to extend across the forward branch of the steamchamber E and thro ugh the steamtube 3 of the forcing or second injector, which is inserted in the partition P of the case A on the same axial line with the steam-jet l and the combining or water tube 2, said steam-tube 3 being made sufficiently large to permit the elongated end e of the combining or water tube 2 to pass through it, and at the same time leave an annular space around it, which gives to the steam-jet 4 of the forcing-injector an annular form', surrounding the termination of the combining or `water tube 2.

Forward of and in the same axial lin'e with the jets and tubes just described, in the main chamber K of the case A, the combining-tube and discharge-nozzle L is located, this com- Dining-tube L being movable endwise and having attached to it near its end that is adjacent to the annular steam-jet 4. a pistonvalve, N, which may be fastened to said tube by screw-threads aud loclenut, or in any other suitable manner. The piston-valveNis made to conform to the size of the main chamber K',

rl lo IOO at that part that said valve occupies when the combiningtube L' is in operative position with regard to the annular jet-space surrounding the extremity e of the combining-tube 2 that is a part ofthe lifting-injector.

Near the discharge end M the body of the combining-tube L is enlarged, and upon the shoulder thus produced au overflow-valve, M', is formed, which is adapted to tit the seat Q, provided for its reception, this seat being formed in the detached portion A' of the case A. The contact of the valve M' and seat Q is effected when the combining-tube L' is in a position to force water, as shown iu Fig. 1 of t-he drawings.

The part of the main chamber K occupied by the piston-valve N when the combiningtube L' is not in operation is enlarged sufficiently to permit the formation of a passage around said piston-valve N, this enlargement of the chamber K' having in it the guides or projecting portions l.: k, Ave., that [it the pe- -ripheral surface of the pistoirvalve N and serve to keep in axial line the combiningtube L'. 1

The enlarged portion M of the combiningtube L', between the valve Q and the free extremity of this portion M, has longitudinal depressions g g, &c., made at spaced intervals on its cylindrical surface to form dischargepassages from the discharge end h ofthe combining-tube L' around the valve Q when this valve is off of its seat.

rlhe piston-valve N is of larger area than the discharge end lz ofthe combiningtube L'.

Communicating with the top of the central part ofthe main chamber K', and su rrounding the same, the waste or overtlow passage ll.' is formed. rlhis is shown in Fig. 3, the case A being enlarged at this point to permit the formation of the passage j ust described.

On the top ef the case A, at the point of communication between the main chamber K' and the Yaste or overflow passage H', the aperture O is formed to permit the insertion ofthe valve G, this opening being closed by a screw-threaded cap, G'.

The opening S, between the main chamber K' and the waste or overflow passage H', is closed by an inwardly-seating valve, G, the purpose of which is to prevent the inflow of air to the injector when in operation.

The body of the valve G is made to extend through said opening into the main chamber K' s0 'far that when the overflow-valve Q and piston-valve N are unseated the piston-valve cornes in contact with said valve G and raises it from its seat at once, admitting air to enter the injector and lill it and its connecting-pipes.

It is necessary that the overflow-valve Q on the combining-tube L be placed in such a position that the receiving end ofthe combiningtube L shall be near to or surround the discharge end of the steanrtube 3 and the annular steam-jet 4; when in operation.

Upon the inuei` end of the attached portion A of the case A the projections A2 are ating-tube 2.

tached or integrally formed. -These are of a proper length to act as stops against which the piston-valve N rests when the overtlow-valve Q and piston-valve N are unseated or open. I do not limit myself to this exact construetion of the stop A2, as it is evident that a slotted annular collar may be substituted, or other similar device used.

rlhe operation of the injector is as follows: It being properly connected to steam and water supplies, and to the water-space of a boiler or other destination of the water, the throttle with which the steam-pipe is provided is opened and steam admitted to the chamber E, from which it simultaneously enters the steam jet l and the annular steam-passage 4. rlhe combining-tube L', it' not in such a position, will at once be forced back by the pressure of steam upon the surface of the pistonval ve N, thus opening the piston-valve N, the overflow-valve Q, as well as the valve G, and permitting a free passage of steam to and through thc waste or overflow passage H' to the atmosphere. rlhe steam passes through the steam-jet l, across the water-chamber.' K, and through the combining-tube 2, and thence by the pistonyalve N, overflow-valve Q, and valve G to the atmosphere. This operation will exhaust the air from the watersupply pipe which is connected to the branch C, water will rise through said pipe, fill the water-chamber K, and i'low through the combin- When water issues from the discharge end of the combiningtube 2, it is actuated by the annular jet of steam issuing around the end c of the combining-tube 2 and forced in a direct line into the receiving end of the eombining-tube L. The water, serving to condense the issuing steam, relieves the pressure on the piston-valve N. The water, being forced through the combiningtube L' against the boiler cheek-valve, creates a sufcient pressure against the end M of the combining-tube L' to force it toward the combining-tube 2 until the overflow Q abuts its seat, which movement at the same time places the pistonvalve N in its closed position and permits the valve G to engage its seat and close the overflow-passage H', thereby preventing the inflow of air into the injector..

The water being prevented from passing through the overt-low by the means just describcd,incrcasesits pressure againstthe cheekvalve until this valve is raised and water passes intothe boiler. Thisoperationwilleontinueas long as water is supplied and the steam remains turned on. If, however, the water should fail for any reason-such as the surging of the water in the tank or the jar of a locomotive or traction engine--or if from any cause-such as the foaming of the water in a' boiler or other source of steam supply from which steam is furnished to the injector-this regular steanrsupply is intercepted, the combining-tube L' at once moves the valve Q from its seat, at the same time opening the piston-valve N, and unseat's the valve G7 which IIO the working parts will automatically assume the same position as they occupy when the instrument is accidentally interrupted in its operation. Thus by the free iniiux of air and consequent discharge of water or condensed I5 steam the injector is left in proper condition to avoid injury that would result to it if left filled with water and exposed to a freezing temperature.

The avoidance of an accumulation of hot 2C waterinthe body of the injector and its pipes,

when the operation of the same is temporarily suspended, is of great advantage,in that it insures the instantaneous lifting of Water and forcing of the same without the vexatious de- 2 5 lay such as hot-Water accumulation frequently entails in the operation of an ordinary injector.

It is evident that slight changes might be made in the details of construction Without 3o departure from the spirit of my invention;

hence I do not desire to limit myself to the exactconstruction of parts as herein shown;

but,

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, isy p 1. In an injector, the combinatiom'u-'ith a combining-tube adapted to slide endwise, of a valve located to one side of the combining- 4 0 tube and adapted to be opened by the sliding movement of this tube, substantially as set forth. c.

2. In an injector, the combination, with a lftinginjector and a forcing-injector, the combilling-tube of the forcing-injector being movable endwise, of a valve located to one side of the combining-tube and adapted to be unseated by the endwise movement ofthe saidtube, substantially as set forth.

3. In an injector, the combination, with a case, a main interior chamber, and a valve that will open a passage to the atmosphere,of an injector-tube adapted to unseat this valve when the injector is at rest and permit the valve to close-when the injector is in use, substantially as set forth.

4. In an injector, the combination, with a5 steani-jetlifting device adapted to raise water and supply it continuously to a steam-jet-forc- 6o ing device, of a steam-jet Water-forcing device the actuating steam-jet of which is annular and the Water-receiving tube of which is endwise movable, these operating devices being placed in an axial line to cause the water de livered by the lifting device to directly enter 5. In an injector, the combination, with a steam-jet-lifting device, of a steam-jet-forcing device placed in the same axial line, the combining-tnbe of the lifting device extending through the steam-tube of the forcing device, forming an annular steam-passage for the forcing-jet, the combining-tube of the lifting-injector discharging directly into the combiningtube of the forcing device, this latternamed combining-tube being endwise movable, with a passage around its discharge end vand a valve to close an opening made to this passage, substantially as set forth.

6. In an injector, the combination, with a steam-jet water-lifting device and a steam-jet water-forcing device, both devices being located in one case in an axial line with each other, the water receiving or combining tube of the forcing device having a passage Way formed upon its peripheral surface, of a valve adapted to seat against a projection formed on the interior surface ofthe case to close this passage-way, substantially as set forth.

7. The combination of a steam-jet-lifting device and a steam-jet-forcing device having an adjustable ontwardlydeiivering overflowspace common to both at the receiving end of the forcer combiniugtube, substantially as set forth.

8. The combination of a steam -jet-lifting device and a steam-jet-forcing device having an automatically-adjustable outwardly-deliv-- ering overdow-space common to both at the receiving end' of the forcer combining-tube, substantially as set forth.

9. In an injector, the combination, with a steam-jet-lifting device, of a steam-jet-forcing device placed in the same axial line, the discharge-nozzle of the forcing device being endwise movable, and having a passage around its -discharge end and carrying a valve to close said passage, substantially as and for the purpose set forth.

10. In an injector, the combination, with a steam-jet-lifting device, of a steam-jet-forcing device placed in the same axial line, the conibining-tube of the forcing device being endwise movable, and having a passage around its receiving end and carrying a valve to close saidl passage, substantially as set forth.

1l. In an injector, the combination, with a steam-jet-lifting device, of a steamjet-forcing devi'ce placed in the same axial line, the combining-tube and discharge-nozzle of the forcing device being endwise movable,and having passage-Ways from both the receiving end of the combining-tube and discharge end of discharge-nozzle and carrying valves toclose said passage-ways, substantially as set forth.

In `testimony whereof I have signed this specification in the presence of two subscribing witnesses.

ALBERT SxEBE-RMAN. Vitnesses:

W. S. Rains, E. G. EBERMAN.

IIC

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