Popular Science ( March 1937 )

Fins in Nozzle Increase Fire-Hose Range

End of new hose nozzle, showing the sets of fins that straighten the stream of water. The inventor is seen with one of the nozzles. Below, a test of the long-range effectiveness it affords.

Metal "feathers" built into a new type of hire-hose nozzle increase the effective range of streams of water. Invented by Horace Barker of Springfiield,  Mass., the nozzle has two sets of transverse fins; one set counteracts the swirls of the water as it emerges from the hose, while the other straightens the stream, reducing its spiral motion and its tendency to break into spray as it travels through the air. Exerts state that the new nozzle will not only add "punch" and distance to fire-hose streams, but will increase their fire-extinguishing effectiveness as well.

Fluid discharge device

Inventor(s): BARKER HORACE R

This invention relates to improvements in apparatus for discharging fluid and is directed more particularly to improvements in nozzle devices to be used in connection with fire-fighting apparatus or the like.

The principal objects of the invention are directed to the provision of water discharge apparatus which is particularly j! adapted for use in connection with fire fighting apparatus, the same being characterized by means adapted to facilitate the |j discharging of a smooth stream of water over a greater distance ! than is possible by apparatus now in common use.

In connection with fire-fighting apparatus it is desired to deliver a smooth stream of water over a considerable distance or height at a considerable pressure. With present day apparatus it is more or less difficult, if not impossible, to discharge a stream at the desired pressures for the height or distances desired and necessary. This is due to the fact that the water in passing through the nozzle is swirled, rolled, or becomes turbulent so that the discharged stream swirls, rolls or becomes turbulent and consequently fans out, brooms or breaks. This reduces its effectiveness since of course a smooth, well-defined stream at the; desired pressures is necessary for the greater distance or height.

According to this invention means is provided within the nozzle or water-discharge means which tends to eliminate the ! turbulent rolling or whirling action of the water during its passage therethrough so that there is discharged from the discharge outlet a smooth, uniform stream which by reason of its novel characteristics I have found will carry a greater distance at the desired pressures than is possible with present day nozzles. In this way the nozzle at the end of a hose, stand pipe, or other apparatus, more effectively discharges water. This is accomplished by the provision of means in the form of plates in the water passage which are disposed so that they are substantially in parallelism with the axis of the water passage thereby.

Many and various other novel features and advantages of the invention will be hereinafter more fully referred to in connection with the accompanying description of the preferred form thereof, reference being had to the drawings wherein:

Fig. 1 is a longitudinal sectional view through a water discharge apparatus having the novel features of the invention associated therewith;

Fig. 2 is a cross-sectional view on the line 2-2 of Fig. 1; and

Fig. 3 is a similar view on the line 5-5 of Fig. 1.

Referring now to the drawings more in detail, the invention will be fully described.

A base is shown at 2 and this may be of the Siamese type i; having separate water passages ij. and 6 which converge into a throat I: indicated generally by 8.

The base 2 may take any form desired since it is not desired to be limited to the particular form shown. It will be understood that the base shown or any equivalent structure will be provided with a throat such as 8 on its upper or outer end.

The nozzle member is indicated by 10. This nozzle member may be carried' by the base and in the form of the invention shown it has its lower or inner side in threaded engagement with the outer or upper end of the base member 2.

The nozzle member 10 has a discharge outlet 12 at a more or less distance from a throat or barrel portion 14. The discharge outlet 12 is preferably somewhat less in diameter than that of the throat 11, so that a water passageway 15 converges from the throat to the discharge outlet 12.

The throat of the nozzle member is somewhat less in diameter than that of the throat 8 of the base so that a water passageway is provided which converges as shown.

In the throat 8 there are provided a plurality of relatively thin plates or vanes 20 and 21 which extend transversely of the said throat. These provide a plurality of passageways 22 therebetween. These plates 20 and 21 are arranged so that the plane of their surfaces are in substantial parallelism with the axis of the throat 8. The plates 20 and 21 may be secured together and associated with the throat in any desired manner. For instance the plates may be slotted so as to be interlocked like the partitions of a box.

In the form of the invention shown, the plates 20 and 21 are associated with a sleeve 24 which is disposed in the throat 8 and said plates may be secured to this sleeve in any desired and well known manner.

The throat 11 of the nozzle member has a central tube member 50 associated therewith and plates 52 and extend transversely of the throat so that there are provided water passages around a central passageway 58.

The central tube 10 may be supported by or associated with the plates 52 and 54 and as in the former case the tube 50 and plates are disposed in a sleeve inserted in the throat 11. In accordance with the invention the plates 52 and 54  and tube 50 may be connected or associated in any convenient way but it is preferable that the plates and tube be arranged in substantial parallelism with the axis thereof.

As water is delivered to the throat 8 of the base 2 its tendency to swirl or become turbulent is overcome by the plates 20 and 21 forming the passageways 22 through which the water travels.

The plates 20 and 21 are of considerable length. As will be seen, the plane of their surfaces is substantially parallel to the axis of the throat so that water is guided in a straight path and as it passes through the tapering passageway 15 into and through a throat 14 of the nozzle member it is again brought into contact with the plates 52 and 51 As it travels through the central tube 50 passageways formed by the plates 52 and 54 its tendency to swirl is overcome. The water, being controlled as it is, will, on being discharged from the discharge outlet 12, emerge as a smooth uniform stream which does not have the objectionable swirling, rolling or turbulent tendency which would result in fanning out or breaking. Thereby it is possible to discharge a stream of water at the desired pressure and velocity which will carry over the a relatively long distances or heights desired.

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