US2081585A - Closure - Google Patents

Description

May 25, 1937.

CLOSURE Filed Oct. 5. 1935 A. HALL ET AL 2,081,585

Patented May 25, 1937 PATENT OFFICE CLOSURE Albert Hall, Narberth, mont, Upper Darby, Philadelphia, Pa.

Application October 5,

Claims.

Our invention relates to a closure member or a cap for controlling the passage of fluids, semifluids, paste, powders, and similar products from containers, such as bottles, cans, collapsible tubes,

5 and the like, and the invention more particularly relates to closure members or caps which are irremovable from the container or reservoir.

Heretofore, it has been customary to employ a closure or cap for a reservoir wherein dispensable articles or products such as paste, shaving cream, etc., are stored. The cap is usually a separate and distinct article from the reservoir, and because they are not connected, it frequently happens that the cap is lost or misplaced which results in inconvenience to the user.

It is essential that the contents of the conventional collapsible tube, which contains such materials as vanishing cream, cold cream, facial cream, etc., should be sealed from contact with the atmosphere, since evaporation of the contents or hardening of the contents will result because of the chemical reaction between the material and the air.

It is, therefore, an object of our invention to embody a closing member with a reservoir arranged so that the closing member cannot be readily removed from the reservoir.

Another object of our invention is to provide a closure for the reservoir to prevent air from contacting and hardening the contents of the reservoir adjacent the discharge spout.

A further object of our invention is to provide a cap which by a simple rotary movement may open the ports or spouts whereby the material contained within the reservoir may be readily expelled therefrom.

A still further object of our invention is to construct a reservoir of a plurality of members which may be readily assembled.

A still further object of our invention is to provide for the expulsion of the contents of the reservoir at a rate under the absolute control of the operator.

A further object is to provide a closure which efiectually avoids all external crevices, pockets, recesses in which the contents may accumulate, or in which dirt or dust may accumulate; thus, the exterior surfaces may be easily maintained in a clean and sanitary condition.

Other objects of our invention are to provide an improved device of the character described, that is easily and economically produced, and which is sturdy and simple in construction.

Wilson T. Young, Oakand Thomas E. Slattery,

1935, Serial No. 43,656

With the above and related objects in view, our invention consists in the details of construction and combination of parts as will be hereinafter more fully described when the description is read in conjunction with the accompanying drawing, in which:

Fig. l is a side elevational view of our invention embodied on a reservoir.

Fig. 2 is a fragmentary sectional view through the closure and the nozzle of the reservoir showing only a portion of the reservoir.

Fig. 3 is a perspective view of the closure or cap.

Fig. 4 is a perspective View of the brake band.

Fig. 5 is a perspective view of the nozzle of the reservoir having the brake band in place thereon.

Fig. 6 is a sectional view particularly illustrating the inclined upper wall adjacent the skirt wherein the upper wall has a cam-like face whereby the brake band will be tightened.

Referring in greater detail to the drawing, in Fig. 1 there is shown a reservoir or tube, generally designated as A, formed with a collapsible body I0 and, also, formed with an externally screw threaded nipple I2, see Figs. 2 and 5, adapted to receive an ordinary cap.

The nipple or neck I2 has a circular valve I4 projecting upwardly from its center, as is illustrated in Figs. 2 and 5. A plurality of radially extending spaced arms l6 extend from the nipple or neck to the valve and serve to support and space the valve centrally within the nipple. The open spaces or ports 18 between the spaced arms provide for the egress of the material from the body of the reservoir. The valve I4 has its uppermost end beveled or truncated so that an inclined curvilinear surface or valve face I! joins at its lower side the cylindrical vertically extending wall 19 and at its upper side 4 v to the pitch of the nipple .threads.

The flange 28 is tapered on its inside surface to form a valve seat 30, the latter being formed at an angle which is the same angle as that of the valve face I7, and the valve seat 30 when seated upon the valve face I! results in a tight joint between the nipple I2 and the cap B.

Projecting downwardly from the cap flange 23 is the cylindrical member 24 which is constructed so thatf'it's'outermost curved surface 32 abuts against'the inner curved surface of the reservoir nipple l2 when the cap is in operative position on the reservoir. The length of the annular wall is such that its fiat annular lower surface termi nates short'of the valve supporting arms I6 when the cap is in closed position on the reservoir, as is illustrated in Fig. 2. concentrically spaced a distance slightly in excess of the thickness of the nipple wall from the outer curved wall 32 of the cylindrical member 24 is another cylindrical wall 34, the latter wall being formed in the cap bod i 7 Thus, a groove 36 is defined by the concentric Walls 32 and 34 and into this groove interfits the upper portion of. the nipple to prevent the passage of any material and thereby prevent its reaching the interlocked threads on the neck and the cap; however, the interfitting groove and neck permits relative rotary movement of the cap with respect to the neck. A plurality of screwthreads 38, internally out upon the annular body portion 25, cooperate with the screw threads on the nipple. I

Below the screw threads of the cap is a curved inner wall 40 that forms the'cap skirt and which has a constant diameter for approximately 300, .the diameter beinggreater than the diameter of the screw threads. The remaining portion 42 ofthe lower wall is: a curvedjwall, but thelatter wall hasga diameter slightly greater than the external diameter of the nipple screwthreads.

Two, radially extending side walls M, @5- join the ends of the long curved wall all to the ends of the. short curved wall 42. These side walls 44, diabut a tip or neck 3? of a brake band, generally. designated as C, in order tolimit the movement of the cap.

The brakeiband, generally designated as C, comprises a-thin circular or wire rod 48, the diameter of the wire 38 being substantially equal The rod is benttoform a diameter slightly less than the diameter of the nipple threads and its ends 50, 5!. overlap in a direction so that the diameter is constant. The tip or neck. 31 of the end 5! is bent to extend radially. outwardly so that the tip or neck3l may abut either of the. walls M or 45in. order to limit the movement of the cap. At assembly, the brake band C is placed adjacent the cylindrical inner wall 40- of the cap and both the cap'and. the brake band are screwed upon the nipple threads. The cap and the brake band readily screw into position due to the fact that the force applied on the tip 37, by the radially extending wall 4d of the cap forces the brake band ahead of the tip, thereby overcoming any tendency of the brake band to grip the threads, but movement in the reverse direction against thebrake is difiicultthis results from the tangential force being applied against the tip 31 by the radial wall 45 of the cap. The tip 31 endeavors to; drag the brakeband after it, and thereby causes the brake band to tightly bind the threads of the nipple I2 and s0 hinder movement of the cap.

The annular surface which joins the junction of the threads to the skirt 4!! is inclined at the same pitch of the threads. Upon this surface is formed a cam-like face 52 which bears upon a portion of the neck of the brake band to tightly fasten the brake band in position. This tighening of the brake band by virtue of the cam' face 52 occurs because the cam face extends downwardly sufiicient totig'htly press the brake band wire against the threads.

A recapitulation of the operation of our invention is as follows:

7 With the elements assembled as illustrated in Fig. 2, a slight turnof the cap using the operators thumb and forefinger of the hand, while holding the reservoir firmly with the other hand, opens the valve. This permits the material if it is a cream or paste to be pressed from the tube in any desired length or thickness. Turning the cap adjusts the size of the cap opening, thus permitting the material to leave the container in a hollowor tubular shape. 'I'hethicknessof the wall of the material may be controlled from a delicate thinness to a bulky mass. When the cap is turned to closed position, a brush or cloth may be used to wipe the outside surface clean.

Although our invention has been described in considerable detail, such description is intended as illustrative rather than limiting, since the invention may be variously embodied, and the scope of the invention is. to be determined as claimed.

We claim as our invention:

1. In a collapsible reservoir having a screwthreade'd neck, a brake band comprising wire encircling the screw-threaded neck, a rotatable cap screwed on said neck and having an opening therein, a projection on said cap engageable with said brake'band to limit screwing oif rotary movement of the cap, and a valve between said cap and said neck for controlling egress of material from the reservoir.

2. The combination with a tube cap threaded on a tube neck, of a valve stem carried by said neck and extending outwardly therefrom, a cap having a port partially formed in alignment with the valve stem, a groove in said valvecap substantially closed by the upper portion of the free end of the tube neck, thereby forming a seal, and a brake band on said threaded neck cooperable with a projection within the tube cap for limiting rotary movement of the cap.

3. The combination with a cap threaded on a tube neck, said cap having an open top anda depending circular skirt, of a split ring having a radially extending end and carried by the tube neck, and an extensioncarrie'cl by the skirt of the cap in its inner peripheryand adapted to threads of the discharge neck, a projection on one end of said brake band, and a projection within said cap cooperable with said brake band projection to limit the rotary movement of said cap. I

5. The combination with a cap threaded on a neck having a split ring, said split ring having a radially extending end and carried. on the threads of the tube neck, an extension carried by the skirt of said cap on its inner periphery and adapted to cooperatively engage the radial projection of the split ring whereby the cap is limited in rotary movement, and an inclined surface adjacent said skirt having a cam-like face thereon whereby the split ring will be tightly pressed against a thread on the tube neck.

ALBERT HALL. WILSON T. YOUNG. THOMAS E. SLATI'ERY.

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