US2453792A - Drain cock - Google Patents

Description

Nov. 16, 19,48. G; H. HUFFER ET AL 2,453,792

DRAIN COCK Filed May 15, 1944 g, lll

/47'7'0/VEY5 Patented Nov. 16, 1948 foFFI-CE C'.VV Beerli, Mayeld Heights; Qhiqqtsslgi'ioxscto. The Weatherhead Company, Cleveland;-Ghia, acorporation oOhio r i Y Application May i5, 1944, srii No. 535,610

This invention-relatesgenerally to tube ,closures and particularly-to a new and improved drain cock.

In the drawings accompanying and forming a `part of this specification:

Fig. 1 is aA central sectional View taken through a drain pipe equipped with one form of closure embodying the present invention;

Fig; 2 is a sectional view taken on line 2-2 of Fig. 1';

Fig'. Sis a' sectional view taken on line 3-3 of Fig. 2 but with the pipe omitted;

Fig. 4 is a cross sectional view taken on line 4-11 of Fig. 3;

Fig. 5 is a View similar to Fig. 1 but with the drain pipe shown in elevation and with the closure adjusted to permit drainage of fluid therethrough;

Fig. 6 is a View quite similar to Fig. 1 but showing a modified form of closure; and

Fig. 'l is an end view taken on line 1-1 of the closure shown in Fig. 6.

Fig. 1 indicates a portion of a tank I having an exteriorly threaded drain plug 2 secured in opening 3 thereof. Plug 2 has an unthreaded portion d for engagement with a wrench, and is exteriorly screw threaded near its outlet end, as indicated at 5. The closure for plug 2 comprises a Cup having an imperforate end wall 6 and side wall 'I provided with an opening 8 therethrough. Wall 'I is generally cylindrical but is formed with axially extending U-shaped exterior projections 9. In the modications shown in Figs. 1 to 5 inclusive, these U-shaped projections 9 are open, as indicated at I0, and members II are held in place in the projections by pressure of the sides of the projections thereagainst. Preferably these members Il are composed of material which is soft enough to be cut readily by threads 5 of the plug when it engage-s with threads I2 (see Fig. 4) formed on the inner cylindrical surface of portions l of the closure. Packing I3 on end wall 6 engages with the open end of spud 2 when the closure is screwed onto the latter and seals the spud against `flow of liquid therethrough. When the closure is screwed partly off spud 2, as is better shown in Fig. 5, and opening 8 is in communication with the interior of spud 2, fluid may ow through the spud and out of the closure.

In Figs. 6 and '7 the spud 2 is like that shown in Figs. 1, 2 and 5. The closure generally resembles the closure of Figs. 1 to 5 but differs therefrom in certain particulars. The end Wall 20 is indented inwardly, as at 2l, to form an inner curved surface which is engageable with fluid sealing contact with the end of the inner surface "of s'pu'd 2, asindicated at'23. If desired, the inner endedgeto Spud 2 may be chamfered slightly to 'aiford" a"` wider annular surfaceA to vseat on the vinner"-surface'ofportieri 2|'. The end wall 2D is provided with ,aplrality' of openings 24 in lieu fof 'anfopening through4 the side' wall, as in the `"'n'lcdificat'ionf of Figs; *1" to 5, and through these openings 24:- niay ow from' spud "2 through `the closure. '3f Thefsidewalli of the closure is -iriteriorly' threaded; `as indicated at 26,` and there of Figs. 1 to 5, however, the part-s of each extension 21 abut against each other and are not separated by friction members, such as I I Aof those figures.

It will be understood that the closure of Figs. 1 to 5 may be constructed with the U-shaped projections of Figs. 6 and 7 if desired, that is, without including members I I within those projections and also that the closure of Figs. 6 and 7 may be provided with a fluid passage through the side wall thereof after the fashion shown in Figs. 1 to 5 instead of having passages formed in the end Wall 20.

The closure of this invention may be made from steel or other metal which can be deeply drawn into the forms shown in the drawing-s and described hereinabove, or equivalent forms. The axially extending projections afford grips by means of which the closure may be readily screwed on the spud to make uid sealing contact with the spud within the closure or to break that seal and permit iiuid to flow freely from the spud through the closure. The members I I are preferably composed of soft metal, or of a non-metallic composition, which may have threads cut into it by the threads on spud 2 and which will, therefore, fit those threads as closely as, or closer than, the threads I2 on the inner surface of the cup. These members tend to prevent relative movement of the spud and closure by reason of their frictional engagement with the spud.

Having thus described our invention so that others skilled in the art may be able to understand and practice the same, We state that what We desire to secure by Letters Patent is dened in what is claimed.

What is claimed is:

1. A closure for a threaded tube end comprising a drawn sheet metal member having a bottom wall, a pair of arcuate walls integral With and projecting from the bottom wall, the interior surfaces of said arcuate walls facing each other and defining a substantially cylindrical surface, and

connectors U-shaped in cross section integral with the bottom wall and the adjacent side edges of said arcuate walls and projecting substantially radially therefrom, said connectors having the inner surfaces of their leg portions pressed substantially into contact with each other whereby the adjacent side edges of said arcuate Walls are disposed in close proximity to each other, the interior surfaces of said arcuate walls having threads cut therein for engagement with the threaded end of said tube, said bottom wall having its central portion indented to engage and close the end of said tube when said member is screwed home, said bottom wall being formed with openings therethrough spaced radially from the indented portion and adapted to be brought into communication with said tube when said member is partially unscrewed.

2. A closure for a threaded tube end comprising a drawn sheet metal member having a bottom wall, a pair of arcuate walls integral with and projecting from the bottom wall, the interior surfaces of said arcuate walls facing each other and deining a substantially cylindrical surface, and connectors U-shaped in cross-section integral with the bottom wall and the adjacent side edges of said arcuate walls and projecting substantially radially therefrom, said connectors having the inner surfaces of their leg portions disposed relative to eachother so that the adjacent side edges of said arcuate walls are disposed in close proximity to each other, the interior surfaces of said arcuate walls having threads cut therein for' engagement with the threaded end of said tube, said bottom wall having its central portion indented to engage and close the end of said tube When said member is screwed home, said bottom wall being formed with openings therethrough spaced radially from the indented portions and adapted to be brought into communication with said tube when said member is partially unscrewed.

GEORGE I-I. HUFFERD.

NORBERT C. BEERLI.

le of this patent:

UNITED STATES PATENTS Number Name Date 555,300 Browne Feb. 25, 1896 809,789 Duncan Jan. 9, 1906 1,040,266 Bowen Oct. 8, 1912 1,274,867 Ford Aug. 6, 1918 1,525,517 Smith Feb. 10, 1925 2,167,321 Abercrombie July 25, 1939 FOREIGN PATENTS Number Country Date 348,031 Germany 1922 693,344 France 1930 490,680 Great Britain 1938

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