US403053A - Shut-off for hose-nozzles - Google Patents

Description

UNITED STATES PATENT OFFICE.

WILLIAM T. KING, OF CAMBRIDGE, ASSIGN OR OF ONE-HALF TO CHARLES E. BERRY, OF WVATERTOWVN, MASSACHUSETTS.

SHUT-OFF FOR HOSE-NOZZLES.

SPECIFiGA'IION forming part of Letters Patent No. 403,053, dated May '7, 1889.

[Application filed October 18, 1888. Serial No. 288,439. (No modeL) To all whom it may concern:

Be it known that I, WILLIAM '1. KING, of Cambridge, county of Middlesex, State of Massachusetts, a citizen of the United States, have invented an Improvement in Shut-Ofis for Hose-Nozzles, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to construct a shutoff for hose-nozzles, and also to provide means whereby air may be drawn from the stream as it passes through the nozzle to thereby afford a suitable supply of air in places filled with smoke.

In accordance with this invention the hosenozzle has secured to it ecoentrically a chambered plate or disk, and an internally-screwthreaded cap is turned upon the said plate or disk, said cap having a hole through it at one side of the center,- which in one position of the cap registers with the nozzle; but when the said cap is turned a part of a revolution the nozzle will be completely closed by the cap. The cap forms one wall of the chamber formed within the plate or disk, and a hole is formed through the side wall of the chamber, through which air may be drawn from the chamber, and as the cap is turned into the position wherein the hole therein registers with the nozzle it is lifted by its screwthreaded connection a little above or beyond the end of the nozzle, so that the air contained in the stream issuing from the nozzle may pass out concentrically with the stream into the chamber and be drawn therefrom by the pipe-ma11 at the hole in the cap. A suitable limiting-stop is provided for limitingthe move ment of the cap in one direction, and the end or face of the cap, striking the end of the nozzle, limits the movement of the cap in the other direction.

Figure 1 shows an end view of the shut-off for a hose-nozzle, the orifice of the nozzle being unobstructed to permit a stream to issue therefrom; Fig. 2, a similar view, the cap being turned to close the orifice of the nozzle and Fig. 3, a vertical. section of the hose-nozzle and its shut-off.

The hose-nozzle a (see Fig. 3) is of usual construction, it having secured to its end eccentrically as by screw threads a plate or disk, I). The plate or disk I) is hollowed out or chambered and has on its perimeter screwthreads. A cap, 0, having internal screwthreads is turned upon the plate or disk, inclosing it. The cap 0 has a hole, 0', through it at one side of the center. (See Figs. 1 and 2.)

When the cap 0 is completely turned on the screw-threaded plate or disk, the top of the cap strikes or bears on or against the end of the nozzle a, closing it; but by turning the cap a partial revolutionthe hole 0 registers with the orifice of the nozzle, affording a passage for the stream.

I preferably cut away the interior of the side Wall of the plate or disk (see Fig. 3) for a short distance to present a groove or passage, d, having an inclined bottom, and provide the cap with a screw or pin, 5, the shank of which enters the groove or passage, so that as the cap a is turned in the direction of the arrow, Fig. 2, the said screw or pin will bind firmly when the hole 0 registers with the orifice of the nozzle, thereby serving as a limiting-stop.

As the cap 0 is turned, so that the hole 0 registers, as aforesaid, it is lifted free from contact with the end of the nozzle, (see Fig. 3,) leaving a small space, and the side walls of both the plate or disk and cap are provided with holes 2 3, which register at such time to permit air being withdrawn from the chamber, which issuing from the stream at the small space at the end of the nozzle provides a supply of fresh air surrounding the stream and filling the chamber, greatly facilitating the work of the pipe-man in smoky places by providing means whereby the air contained in the stream of water may be utilized. k

The hole in cap 0 is made a little larger than the orifice in the nozzle, so that the exit of the stream may be unimpeded, thus preventing the chamber from filling with water.

WVhen in use ordinarily, the nozzle will act to a certain extent as an injector, air being drawn through the holes 2 3 by the issuing stream; but when smoke is encountered the pipe=man places his lips to the hole 3 and draws in his breath,such action giving to him a sufficient portion of the air contained in the stream to enable him to breathe.

I claim- 1. The chambered plate or disk I), externally screw-threaded, and the nozzle a, eceentrieally secured in said plate or disk, the end of the said nozzle projecting beyond the surface of said plate or disk, combined with the cap 0, internally screw-threaded to be turned upon the plate or disk and having the hole 0' of larger diameter than the internal diameter of the end of the nozzle, whereby the water has unimpeded exit, substantially as and for the purposes set forth.

2. he nozzle a and the eecentrieally-secured chambered plate or disk I), externally screw-tln'eaded and having the hole 2, com-

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