US660210A - Spigot. - Google Patents

Description

UNITED STATES:

PATENT OFFICE.

JAMES M. CARRICO AND WILLIAM G. CARRIC'O, OF TOWSON, MARYLAND.

sPleoT.

SPECIFICATION forming part of Letters Patent No. 660,210, dated October 23, 1900. Application sied Januaryr 22, 1900. serial No. 2.392. (No model.)

Baltimore, State of Maryland, have invented certain new and useful Improvements in Spig- Vots, of which the following is a specification,

reference being had therein to the nying drawings.

This invention relates to spigots, and paraccom paticularly to a valve-stem packing for a spigot having a reciprocating valve.

The invention has for one object to provide improved means for compressing a packingblock into contact with the cap and thevalvestein of a spigot when the valve is opened, and thus preventing the leakage which occurs about such a stem from the pressure of water passing through the spigot.

A further object of the invention is to support such a packing in position when the valve is closed and to gradually increase the pressure on thepacking as the valve is opened and the water admitted to the discharge-pipe.

Other objects and advantages of the invention will hereinafter appear in the following description, and the novel features thereof will be particularly pointed out in the'appended claims.

In the drawings, Figure l is a verticalsection through a spigot with the valve closed.

Fig. 2 is a horizontal section on the line 2 -2A of Fig. l. Fig. 3 is a perspective of separated parts of the valve and the packing for its stem, and Fig. 4 is a detail vertical section illustrating the stem-packing under cornpression.

Like letters of reference indicate like parts throughout the several figures of the drawings.

In the present application of the invention the valve isshown as applied to a spigot or.

faucet A, having an inlet-pipe A and discharge-pipe A2, connected by a valve-seat A3; but it will be understood that the valvesteln packing may be applied in any other desired form of device for controlling the flow of liquid.

In the form of spigot illustrated in Fig. 1 a chamber A4 is provided above the valveseat, and through this chamber avalve-stem B extends and is provided at its projecting :end with a suitable handle B', While its lower portion is provided with suitable threads B2,

adapted to engage the interiorly-threaded Above the valve-,holder C an interiorly-v threaded compressor D is located and through which the threaded portion B2 of the stem B extends. This compressor is provided with wings D', traveling inthe grooves A5 to prevent the rotation thereof and cause a vertical movement of the compressor simultaneously with the movement of the valve C2. Resting upon the upper face of this compressor D is a suitable coil or other form of spring E, having at its upper face a Washer F, and upon this washer a compressible packing-block G, preferably conical in form, is located and provided with a central aperture' G', through which the stein B passes. This packing may be of rubber or any desired material and is adapted to iit the inner face of a cap A, threaded or otherwise secured to the valvecasing A. The stem B is also provided with a shoulder B3 above said` packing to prevent longitudinal movement of the stem when operating the valve andv compressor. It will also he apparent that the grooves A5 extend downward from the top-of the casing, so as to permit the valve-holder and compressor to be placed in position or readily removed therefrom and held against rotary movement, sol

as to be simultaneously reciprocated.

From the foregoing description it will be apparent that a rotation of the valve-stein B in the proper direction will open the valve O2, permitting the pressure of `water to enter the discharge-pipe A2 and simultaneously raise the compressor D and vplace under compression the packing Gr through the medium of the spring E, thus by lateral expansion making a tight joint about the stem B and preventing all leakage at that point. When IOO ihe valve is in the closed position, as shown in Fig. l, the spring E sustains the packing in position and by bearing against the under face of the shoulder B3 prevents any down- Ward movement thereof. A collar B'l may be provided to prevent downward movement of the stern when opening the Valve. It has been found that if the stem be packed sufficiently tight to prevent leakage the operation of the valve is rendered diiicult and the parts quickly wear so as to cause leakage and necessitate repairs. With the present structure the valve-stem can easilybe rotated and the packing is not compressed until the pressure of water enters the discharge-chamber, and such tight packing is necessary to prevent leakage. The structure therefore effects a tight joint at the necessary time and permits at other periods a free and easy rotation of the stern to effect the operation of the valve. A further material improvement is the application of this packing to a valve which reciprocates vertically toward and fromits seat and is not given a rotary movement, which tends to wear and quickly destroy the valve.

It is obvious that changes may be madein the details of construction and configuration of the several parts Without departing from the spirit of the invention as dened by the appended claims.

Having described our invention, What is claimed isl. In a valve-casing, the combination of a reciprocating valve held against rotation, a threaded stem for operating the same, a compressor threaded upon said stem and held against rotation, a conical packing-block surrounding said stem and expanded laterally in the reciprocation of said compressor, and a cap surrounding said packing; substan- Atially as speci iied.

2. In a Valve-casing, the combination of a cap therefor, a reciprocating valve held against rotation, a threaded stein for operating t-he same, a compressor threaded upon said stem and held against rotation, a packing-block surrounding said stem and expanded into contactwith said stem and cap in the reciprocation of said compressor, and a spring interposed between said packing and compressor; substantially as specified.

3. In a valve-casing provided with a Vertical way, the combination of a valveholder having wings operating in said way and interiorly threaded, an independent interiorlythreaded compressor provided with Wings traveling in said way, a threaded stem passing through said compressor and entering said valve holden a compressible conical packing-block surrounding said stem above said compressor, a spring interposed between said packing and compressor, and a cap Iitting said packing and secured to said valvecasing; substantially as specified.

In testimony whereof we afiix our signatures in presence of two witnesses.

JAMES M. CARRICO. WILLIAM G. CARRIUO.

Witnesses:

WM. M. RISTEAU, CHAs. H. WHITAKER.

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