US335227A - Injector - Google Patents

Description

(Model.) F. W. KREMER.

'INJBG'TOR Patented Feb. 2 ,1886.

INVEJVTOR M ./Itorney.

UNITED STATES PATENT OFFICE..

FRANKLIN XV. KREMER, OF VADSVORTII, OHIO.

INJECTOR.

SPECIFICATION forming part of Letters Patent No. 335,227, dated February 2,1886.

Application filed .Tune 11, 1835.

. is to provide an injector of such character as that should the water be withdrawn from the suction-pipe momentarily,or thej et be broken, as by an abrupt jar, which is liable in such instruments when used on traction or railway locomotive engines where the water-supply is taken from tanks, and when the water is returned to the suction-pipe, the water will be again taken up by the instrument and the jet rfc-established automatically. The means employed for accomplishing this object constitute the present inventiomas I will now proceed to particularly point out and claim.

In the accompanying drawings, in the several figures of which like parts are similarly designated, Figurel is a front elevation of my improved injector; Fig. 2, a central vertical section ofthe same in a plane at right angles to Fig. l; and Fig. 3 is a horizontal cross-section in the plane of line m a', Fig.1.

I prefer to unite the several sections ortubes a. b of my injector by rods or bolts and nuts c c,engaging ears or lugs d cl and e e on the end sections or tubes and unthreaded joints, as in my Patent No. 282,092, referred to. A bonnet, f, is screw-tapped into the head of the upper section, c, and is provided with a suitablypacked steamtight gland, g. The bonnet fis screw-threaded internally at j" for any suitable distance to receive the screw threaded spindle 7L, which is provided with a suitable lever or hand-wheel, h, for operating it. This spindle has a transverse opening or portJ, a collar, h3, below it,which seats against the bottom f2 of the bonnet within the steam-chamber a ofthe upper section, c, and a longitudinal passage, hf, leading from the opening or port h2 to the point of the spindle, and opening into the suction-chamber a2, which in this Serial No. 108,369. (Model.)

example of my invention is integral with the tube a. The steam and suction chambers are separated by a diaphragm, ,which is provided with an opening for the passage of the spindle, and this opening" is rendered steam-tight by a packed gland, j, screwtapped in from the steam-chamber.

L is the steam-inlet, and Z the water inlet or suction. In this example of my invention the lower end of suction a is chambered to rcceive the lifting-tube m, which has the jetpassage m aligned with the spindle h. Beneath the lifting-tube and held in place by it upon orin the upper end of the boiler-section b is the combining-tube a, having the ported base n', and a check valve, o, beneath the same, substantially as in my Patent No. 299,229.

p is the ordinary annular overliowchamber, in the passage leading from which into the exhaust or delivery chamber gis arranged the check-valve r,held in place by the screw-cap s.

t is the delivery-tube.

The operation is as follows: Vhen the spindle is run out till its collar h is seated against the bonnet-bottom ]",steam will be cut offand the instrument be inactive; but when the parts are in the position shown in Fig. 2, steam enters through the inlet lc and port if and passage h2 making impact in lifting-tube m, and passes through ported base n out into the chamber q, and escapes past valve r out at the overliow, whereby a vacuum,socalled,is produced in the suction-chamber a2, and water is drawn in and forced by the steam through the lifting-tube m. As soon as the water becomes accelerated, there will be a partial vacuum produced between the tubes m and a, which will cause the check-valve o to rise and close the ports in the base nof the combining-tube. Vhen the water is sufficiently accelerated to overcome the resistance of the boiler-pressure, it is driven across the space between the combining tube and delivery-tube, producing a vacuum in chamber q,

which causes the check-valve r to close the ICO tion of the water at that point, when the discharge at the overliow will cease. In high pressure where the steam is in excess of the water-supply, steam will escape at the overdow, in which event the steam-spindle should be withdrawn from the lifting-tube until the discharge ceases at the overilow. Thus it will be seen that in the construction of this machine the spindle performs a double func- 1o tion--viz., it is adjustable to varying steampressure, and also for shutting oli" and controlling the quantity of steam to be admitted to the instrument, thus dispensing with a globe-valve in steam-pipe.

In my machine there is practically but one chamberb and when the machine is in operation it is impossible to have an unequal vacuum between the tubcsmfn and nt, and should there be an excess of water at m n, which is f 2o liable to occur with varying steam-pressure or varying lift, a vacuum is produced at n t,caus

ing the check-valve o to open the ports in the ported base n', and the surplus water from this point will be carried to the boiler. Thus in this construction it will be seen that an equal vacuum or pressure will be maintained on either side ol" the combining-tube, and consequently there can be no loss'of water, as has heretofore occurred.

It will be understood that in my machine the steam -jet of spindle lr performs both the functions ot' lifting and forcing, and through the employment ofthe tube m', combining-tube u and its ported base, check-valve o, exhaust and delivery tube t is had a perfectly automatic machine, and which I am pleased to call a triple-tube automatic injector.

My construction possesses,among others,the following advantages: Ihe working parts are 4o all accessible without disturbing pipe-connections. By one manipulation the adjustment for varying pressure and for the admission of steam is had; the machine starts up again automatically upon the return of the water afterbeing temporarily withdrawn; the ready substitution or renewal of parts, and the provision against impairment of operation by having only one manually-movable part.

5o 1. In an injector having steam and water inlets and an outlet, the tubular screw-spindle h, provided with a steam-inlet port, h2, and a collar, h3, on the same, and a threaded bonnet, f, in which said spindle is moved longitudinally to open and wholly close the inlet, combined with the suction-chamber separated from the steaminlet by the diaphragm t', and the packing-gland j,surrounding said spindle and bearing upon the diaphragm, substantially as shown and described.

2. The combining -tube provided with a valvular base interposed between the suction and'exhaust chambers, a superposed liftingtube, a longitudinally-adjustable steam-inlet spindle provided with a steam-inlet port, and a collar on said spindle co-operating with the bonnet, in which said spindle is adjustable to open and close said port by the longitudinal movement of said spindle in said bonnet, combined to control the flow of water commensurately with the steampressure, substantially as described.

3. In an injector, the combination, with the steam and water inlets, the suction-chamber, and theoutlet, of the screw-threaded steamspindleh, having alongitudinal steam-passage, h4, an inlet-port, h2, and a collar, h3, arranged below said port, the screw-threaded bonnetf, in which the said spindle is adjustable, and against the bottom of which it is seated to wholly shut off the supply of steam, and a hand-wheel to operate said spindle, substantially as described.

4. The tube in', forming a chamber above the combining-tube, combined with such combining-tube, parts therein, a check-valve cooperating automatically with said ports, a deliveryachamber having an automaticallyoperated check-valve in its overflow, and asteaminduction spindle provided with a valvular port and operable bylongitudinal adjustment to automatically start and maintain the tlow of water, and to reestablish it after accidental cessation, substantially as described.

In testimony whereof I have hereunto set my hand this 9th day of June, A. D. 1885.

FRANKLIN W. KREMER.

Witnesses:

E. J. YOUNG, H. B. CLARK.

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