US396376A - Thirds to george w - Google Patents

Description

(No Model.)

E. W. SPEAR. OVERFLOW 011301: NOZZLE. .No. 396,376. Patented Jan. 15, 1889.

F N B H FIG.

WITNESSES //v1/5/v TOR, 0 I W w a r I 5 7M Jit torney,

. M Q M N. FEYERS. Phaln-Lllhogrnphcr, Wahingtcn. D.C-

llnirn grass ATENT FHQEQ EPHRAIM \V. SPEAR, O11 BOSTON, MASSACHUSETTS, ASSIGNOR OF TVVO- THIRDS TO GEORGE LAWLER AND JAMES L. SMITH, OF SAME PLACE.

OVERFLOW-CHECK NOZZLE.

SPECIFICATION forming part of Letters Patent No. 396,376, dated January 15, 1889.

Application filed August 18, 1888. Serial No. 283,097. (No model.)

T all whom it may concern.-

Be it known that I, EPHRAIM \V. SPEAK, a citizen of the United States, residing at Boston, in the county of Suffolk and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Automatic Overflow-Check Nozzles, of which the following is a full specification.

My invention consists of an improved overflow-check nozzle applicable especially to oilcans and other such close receptacles having a nose through which the liquid is discharged. Mynozzle is so constructed, as hereinafter described, as to automatically stop the flow when the lamp or other vessel into which the liquid is poured is full. At the same time, by means of an acoustic indicator attached to the nozzle, a musical sound is produced during the discharge, which stops when the flow 2o ceases, thereby indicating that the vessel is full.

Of the accompanying drawings, Figure 1 shows in section an oil-can fitted with my improved nozzle; and Fig. 2 shows the same in the act of filling a vessel, the surface of the liquid in the vessel being shown at the point where the flow ceases.

A is the body of the can, to which is attached an automatic overflow-check nozzle consisting of the nose -N, through which the liquid is discharged, and asmaller air-tube, B, preferably secured to the nose N, and run ning from the outer end of the nose E into the interior of the can and terminating, preferably, at a point opposite its point of en trance. To the inner end of the air-tube Bis attached the acoustic indicator 0, which, as shown in Fig. l, consists of a short piece of tube closed atits outer end, e, and having a reed, E,which vibrates in a, slot along the upper side of the tube.

The operation of the nozzle is as follows: 'The can being inclined, as shown in Fig. 2, with the end of its nose N within the vessel G to be filled, liquid will flow out of the can into the vessel. To make the outflow of the liquid continuous, air enters in a constant stream through the tube B, following thev principle of ordinary overflow-check nozzles of this class, displacing the liquid in the can A, and as the air enters the can through the slot covered by the reed E the latter is caused to vibrate, and a musical sound is thus produced. hen, however, the surface of the liquid in the vessel to be filled reaches the level of the outer end of the tube B,the flow immediately stops, because no more air can enter the closed can A, it being, of course, understood that the cap of the can is firmly screwed down, so that the only means for air to enter is through the tube B. By this means it is impossible for the liquid to run over if the end of the nose is below the level of the top of the vessel to be filled, as the flow at once stops when the surface of the liquid closes the air-tube. hen the flow of air is checked, the musical sound at once ceases, and notice is thus given that the vessel is full. This acoustic indicator is especially useful when opaque vessels are to be filledsuch as metal lamps, &c.where the oil or other liquid cannot be seen, and where, with ordinary oil-cans, there is constant danger of overflowing. As long as the musical sound is heard the operator knows that the liquid is flowing into the vessel, and as soon as the sound ceases he knows at once that the vessel is full and removes the can therefrom.

I ordinarily employ a bracket, F, attached to the nose at such a height as to determine the depth to which the end of the nozzle reaches in the lamp or other vessel. This bracket rests on the edge of the vessel in a manner readily understood by reference to. Fig. 1. The acoustic attachment 0 is, moreover, particularly useful in cases where, through carelessness or otherwise, a little air might leak in, either through the cap L of the can or through some hole other than the airtube B, so that even when the latter is closed by the liquid in the vessel enough air will leak in to cause the flow to continue. In this case the operator will know by the stopping of the musical sound that the vessel is full and will remove the canbe'fore any overflow 5 can occur.

I do not limit myself to the exact construction herein shownas, for instance, the air tube might be made in one piece, with the discharge-nose either on the inside or the outside thereof, without in any way affecting the principle; or, if desired, a whistle or any other musical device operated by a flow of air might be substituted for the reed herein shown. I prefer, however, to have the outlet of the air from the tube B into the can at or near the highest point within the can when the latter is in a position for filling a vessel.

I am aware that automatic overflow-check nozzles containing a liquid-discharge tube and an air-admitting tube are old and well known, and such I do not claim as my invention.

I claim- 1. An automatic overflow-check nozzle consisting of the combination of a liquid-discharge nose, a separate ahr-admitt-ing tube, and an acoustic indicator, constructed. and arranged substantially as and for the purposes described.

EPHRAIM \V. SPEAR.

\Vitnesses:

WM. H. II. Dowsn, ALBERT E. LEACH.

Images