US2505406A - Screw type closure for container pivotally supporting a resiliently mounted pressure closure for adjacent opening - Google Patents

Description

P 1950 J. A. JOHNSON SCREW TYPE CLOSURE FOR CONTAINER PIVOTALLY SUPPORTING A RESILIENTLY MQUNTED PRESSURE CLOSURE FOR ADJACENT OPENING Filed March 21,1946

INVENTOR, .L/OHN JoH/vsq/v, fr 4.

firm? NE 2 Patented Apr. 25, 1950 SCREW TYPE CLOSURE FOR CONTAINER PIVOTALLY SUPPORTING A RESILIENTLY MOUNTED PRESSURE CLOSURE FOR AD- J AGENT OPENING John A. Johnson, Crawfordsville, Ind.

Application March 21, 1946, Serial No. 656,034

1 Claim.

This invention relates to a fire extinguisher of that type employing a chemical in powdered form, and relates particularly to means for preventing escape of the powder through the spraying or blowing nozzle before the extinguisher is to be used. A primary object of the invention is to provide an extremely simple and yet most effective cap for the dispensing nozzle which will always be available without danger of falling out or accidentally being removed. A further primary object of the invention is to provide such a structure in an exceedingly simple and yet durable form which will permit low-cost production.

These and other objects and advantages of the invention will become apparent to those versed in the art in the following description made in accordance with the accompanying drawing, in which:

Fig. 1 is a view in side elevation of an extinguisher to which the invention is applied;

Fig. 2, a view in end elevation; and,

Fig. 3, a view in fragmentary side elevation of the filling and dispensing and of the extinguisher in partial section on a line 3--3 in Fig. 2.

Like characters of reference indicate like parts throughout the several views in the drawing.

The fire extinguisher III is generally cylindrical in shape and is provided with a filler neck I I with which is engaged a cap I2. In the form herein shown, this cap I2 screw threadedly engages over the outside of the neck II. The neck II is positioned eccentrically of the body of the extinguisher ID to provide space for the discharging or dispensing nozzle I3 through which the contents of the extinguisher II) are expelled in the normal operation of applying the contents to the base of a fire.

A spring I4 has one end portion rockably attached to the cap I2 by any suitable means such as by a rivet I5. The other end of the spring I4 is provided with a rounded boss I6 spaced a radial distance from the rivet I5 to permit that boss I6 to center over the orifice of the nozzle I3 when the spring I4 is swung thereover. gasket I I which may be made of felt covers the boss I6 so that the spring I4 may compressibly engage the felt around the edge portion of the nozzle orifice centered by the boss I6 pressing thereagainst. I

The spring I4 normally tends to spring inwardly toward the end of the extinguisher It, at least by a portion adjacent the rivet I 5 to bear against the face of the cap I2 sufiioiently to require that the spring I 4 be lifted outwardly from the cap by its outer end to engage over the end of the nozzle I3 in order that the yielding pressure may be applied to retain the felt across the end of the nozzle. When the extinguisher is about the rivet IS, the tension causing the spring I4 to swing inwardly toward the end of the extinguisher, and thereby any swinging of the spring I 4 would cause its outer end to contact against the side of the nozzle I3 rather than to appear over its discharging end. That is the spring I4 when shifted to one side of the opening of the nozzle I3 will automatically spring back and thus not be permitted to return of its own accord across the opening of the nozzle. While this action is obtained, the presence of the spring I4 and its mounting on the cover I2 will not interfere with the removal of that cover to permit refilling of the extinguisher since the spring I4 is pivotly attached to the cover. This means that the cover I2 may be revolved on the neck I I to remove it therefrom without any attention having to be paid to the spring I 4 since the cover I 2 may turn in a revolving manner in respect to the spring I4. Of course when the cap I2 is completely removed and then is returned after the filling operation, the spring member I4 will have to be swung around and its outer end lifted up to set over the end of the nozzle I3.

While I have herein shown the invention in the one best form as now known to me, it is obvious that structural details may be changed without departing from the spirit of the invention, and I therefore do not desire to be limited to that precise form beyond the limitations as may be required by the accompanying claim.

I claim:

Closure means for a container having a screwthreaded portion through which the container may be filled and a spray nozzle opening located to one side of and lying in a plane substantially normal to the axis of the threads of said portion, comprising a cover to screw-threadedly engage said portion to be advanced and retracted therealong; an elastic leaf member; means pivotally securing an end portion of the leaf member to said cover; said leaf member having a length suflicient to swing by its other end portion about said securing means across said nozzle opening, said other end portion being formed to seat compressibly against the margin of said nozzle opening whereby advancement of said cover on said portion will increase the pressure of said leaf member against the nozzle opening member.

JOHN A. JOHNSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 619,750 Hopkins Feb. 21, 1899 728,433 Baeuerle May 19, 1903 1,865,269 Munday June 28, 1932

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