US233248A - Liquid-ejector - Google Patents

Description

(No Model.)

T. J. HOLMES. Liquid Ejector.

Patented Oct. 12, 1880.

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NVPETERS, PHOTO-UTHOGRAPH ER. WASHINGTON. D C.

llJNrrED STATES PATENT Erica THOMAS J. HOLMES, OF BOSTON, MASSACHUSETTS.

LIQUID- EJ ECTO R.

SPECIFICATION forming part of Letters Patent No. 233,248, dated October 12, 1880.

Application filed August 18, 1880. (No model.)

To all whom it may concern:

Be it known that 1, THOMAS J. HOLMES, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain Improve ments in Liquid-Ejectors, of which the followin g is a full, clear, and exact description, reference being bad to the accompanying drawings, making part of this specification, in which- Figure 1 is a perspective view of a liquid receptacle having my invention applied thereto. Fig. 2 is a vertical section through the center of the same, enlarged Figs. 3 and 4, slight modifications of construction.

My present invention consists in a bent tube provided with an orifice, located preferably at its lower bent portion, in combination with a piston or plunger moving air-tight in a barrel at the top of one branch of the tube, for the purpose of forcing the liquid in intermittent jets from a discharge-outlet (preferably of contracted size) located at the top of the other branch of said tube, by which construction I produce a simple liquid-ejector of superior capacity, without valves, adapted for various uses, as hereinafter set forth.

To enable others skilled in the art to understand and use my invention, I will proceed to describe the manner in which I have carried it out.

In the said drawings, A represents a receptacle for containing liquid, closed at its month by a plug or stopper, a, covered by a cap, B, said stopper and cap having a central cylindrical opening extending vertically through them for the reception of a tubular barrel, 0, which may have a screw-thread out on its exterior, by which it can be securely held within the stopper. Connected with the bottom of this barrel is one branch, b, of a tube, D, of smaller diameter than the barrel, extending vertically down into the liquid-receptacle to a point preferably near its bottom. The tube D is here bent so as to form another branch, 0, which extends up alongside of and parallel, or nearly so, with the first branch, b. The branch 0 also passes up through the stopper a, where the top of the tube is bent so as to form a horizontal branch, (1, which projects out a short distance through an aperture in the flange e of the cap B, the outer end of the horizontal branch (1 being provided with a discharge-orifice, h, of contracted size.

Within the under side of the bent portion of the tube D, at the junction of its branches 1) c, is formed an inlet-opening, i, for the admission thereto ot' the liquid from the receptacle A.

The barrel 0 contains an air-tight piston, E, the rod or stem It of which projects up through the cap B, and is provided at its top with an enlargement or head,- l.

\Vithin the barrel 0 is a spiral spring, m, the lower end of which bears upon its bottom, the upper end of the spring bearing on the under side of the piston, which is turned down of smaller diameter to enter the space within the top of the spring, thus affording a suitable bearing therefor.

To preventtthe piston from being forced out of the barrel by the action of the spring m, I form upon the top of the cap B or continuation of the barrel 0 a projection, n, cast in one and the same piece therewith, which projection, after the piston is packed and introduced, I turn or spread in and burnish around the stem 70, thus forming a shoulder, 19, which limits the upward movement of the piston and keeps it in place within the barrel. (See Fig. 2.)

The projection 02 and the shoulder p formed thereby may, however, be dispensed with, and the interior of the top of the cap or continuation of the barrel be provided with a female screw-thread for the reception of a screw-nut, 1', against the under side of which the piston may bear, and thus be prevented from being pushed out by the spring, (see Fig. 3 but I prefer the construction shown in Fig. 2, as it can be effected at a less cost.

Instead of placing the spring below the piston,it may bear on its top and surround the stem is inside the barrel; but I shall probably adopt the construction first described and illustrated in Fig. 2. The spring may also surround the stem is outside (on top) of the cap, Fig. 4, in which case, however, the device would not present a finished appearance.

The discharge-orifice It need not necessarily be contracted in size, as a jet can be ejected were the diameter of the outlet the same, Fig. 4, as the interior of the tube D at any point in its length; but I prefer to contract the outlet,

as thereby I obtain a finer jet, which can be thrown a greater distance.

Operation: A supply of liquid being placed in the receptacle A and my device applied thereto with the piston up, as seen in Figs. 1 and 2, the liquid rises instantly through the inlet opening into both branches b c of the tube D, when a sudden tap or pressure upon the head of the piston-rod It causes the piston to descend against the resistance of the spring m and forces the greater portion of the liquid in the branch b down said branch, around the bend at its bottom, and up into the branch 0, together with the liquid therein, out of the discharge-orifice h. The pressure exerted on the columns of liquid in both branches b c by the descent of the plunger, in connection with the contracted size of the discharge-orifice, has the effect of ejecting the liquid therefrom in intermittetit fine streams or jets to a considerable distance. In this operation a small portion onlyot'theliquid in the branclibreturns through the inlet-opening into the receptacle, and it will be seen that although the liquid in the receptacle rises instantly in the branches when the piston ascends, said liquid in the receptacle performs the oflice of a natural check-valve, which approximately seals and closes the inlet-opening 2', thus preventing the return to the liquid-receptacle A of the greater portion of the liquid-column in the branch I), which, with all of that in the branch 0, is thus compelled to escape through the discharge-orifice h.

The piston may be omitted and one end of the bent tube attached to an elastic bulb, the intermittent streams being produced by the compression of the air within the bulb.

I prefer to locate the inlet-opening in the lowest part of the bent tube, as at that point the entire contents of the receptacle can be utilized; but the inlet maybe made in the top of the bend, or in the straight portion of the tube, so long as it is situated below the level of the liquid in the receptacle.

My device, as shown in Figs. 1, 2, 3, and 4, dispenses with a valve and with a second tube and the labor of securing them in place, the absence of which features materially simplifies the construction and reduces the expense.

I claim- 1. A liquid-ejector consisting of a bent continuous tube, D, provided with an inlet-opening, 1', located at or near its lower bend, and a discharge-orifice, h, at its upper bend, in combination with a device for forcing out the liqaid in intermittent streams, substantially as described.

2. The bent tube D, with its inlet-opening t, located at its lower bend, and a dischargeorifice, h, at its upper bend, in combination with a barrel, 0, connected with the branch b of said tube and a piston moving in said barrel, as and for the purposes set forth.

3. A barrel, 0, contracted at its upper end and connected at its bottom with the bent liquid-tube D, having an inlet-opening, t, located at or near its lower bend, and a dischargeorifice, h, at its upper bend, in combination with a piston and a spiral spring for automatically raising the same, as described.

Witness my hand this 10th day of August, 1880.

THOS. J. HOLMES.

In presence of JOHN H. ELLIS, F. D. HOLMES.

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