US2087732A - Receptacle and closure - Google Patents

Description

July 20, 1937. w. LOCKHART RECEPTACLE AND CLOSURE Filed May 2, 1935 INVENTOR. Y Z ockhar William fawn 6;. ATTORNEYS' Patented July 20, 1937 REcEP'rAcLE AND CLOSURE William Lockhart, Cleveland, Ohio, assignor to Cornell Securities Corporation,

Cleveland,

Ohio, a corporation of Delaware Application-"May 2;1935, Serial No."=- 19,43'l

7 Claims.

My invention is an improvement in metallic receptacles and closures therefor and relates more particularly to a clamping ring for removably clamping the cover on the receptacle in fluid tight sealed relation.

One of the objects of the invention resides in a split clamping ring expanded or contracted by means of a link and lever mechanism connecting the ends of the ring and by which the closeing pressure on the drum covermay be applied first to fix the 'cover in place and subsequently to seal the cover by additional pressure in fluid tight sealed relation to'the drum.

Another object of the invention is to provide a device of this kind employing separate operating leversto apply different degrees of closing pressure to the cover.

A further object is to provide a link and lever operating mechanism connecting the ends of the ring for applying a predetermined closing pressure uniformly around the ring and a supplemental lever connected with one of said ring ends and with said other link to apply an additional closing pressure on the ring when the supplemental lever is operated.

' Another objectof my invention consists in a compound link and lever closing mechanism for a split channeled clamping ring-of the class described, which is simple of construction, low in costof manufacture and which operates externally of the ring."

A still further object is such a clamping mechanism which, when the ring is operated to exert a closing pressure onthe cover, offers substantially no external obstructions which, if present, might interfere with the storage of the drums. ""Other objects andf advantages of myminvention' will'become apparent as the following description of an embodiment'thereof progresses, reference being made to the accompanying drawing in which like reference characters are employed to designate like parts throughout'the 'same, g

' Figure l isa. top plan view of-a covered drum showing an embodiment of my invention applied inuse; 'i

Figure 2 is an enlarged section taken online 1-2 of Figure 1;

Figure 3 is .a fragmentary viewof an embodi- -ment of myjinvention showing' the parts in position for. fully contracting thering;

\ Figure 4 is a section taken on line 4,-lof

Figure 3; r

(c1. 22ll61) Figure 5 is a. section taken on line 5-5 of Figure 3;

Figure 6 is a view similar to Figure 3 but shows the ring expanded and the operating mechanism in open position; and,

Figure'l. is a side elevation of the parts shown in Figure 3.

Referring now more particularly to the drawing, the barrel'or drum. is indicated at I. The

upper open end of the container is formed with a peripheral head 2. A cover 3 comprising'a cupped'or depressed head, having 'a'peripheral upwardly and outwardly extending flange ,4, is supported by the bead 2 in such a manner that the cupped portion of the'head or cover may be telescopedior a short distance within the open end of the drum, as illustrated inFigure 2. It will be noted that a portion of the flange 4 is of substantially arcuate cross section to conform with .the approximate curvature ,of the upper surface of the head. A packing 5 consisting of an annulus of any suitable packing material, such as flexible rubber tubing or cork, is interposed between the flange 4 and the bead 2. I

According to the present invention, I have provided an improved means for removably securing the cover on the drum. or receptacle to effect a fluid tight seal therebetween'by exerting a substantially uniform and firm pressure along the cover flange and bead in a direction substantially parallel'to the longitudinal axis of the drum.

Such means preferably includes a transversely split,'channeled clamping ring 6 ofsubstantially U-shaped cross section and which is capable of being expanded and contracted by suitable In the form illustrated the upper and means. lower-flange and bead engaging walls respectively of the ring converge slightly toward theouter diameter of the ring and engage the'cover flange and bead of the container to press the-same together tightly when the ring is contracted. However,,.it is tobe understood that the ring and receptacleopen 'end may be so designed that the cover will .be pressed into a tight seal with a shoulder formed at the receptacle open end when thering is expanded. Thatis, instead of the re ceptacle being formed with arolledbead 2, the open end may be formed with an annular shoulder and an annular channel for receiving an expander type ring, a packing ring and the cover. By contracting the typeof clamping ring herein illustrated, the cover flange will be pressed tightly against the packing 5 and the supporting bead, 2 under a substantially vertical pressure.-

trated in Figures 1, 3, 6 and '7; A pair of operating levers 'I and 8 are pivotally connected with the respective ends 9 and Ill of the ring defining the split therein. Pins or rivets II and I2 provide these pivotal connections and the ring ends 9 and II] are preferably reinforced by welding an additional thickness of metal I3 thereto, as shown. When the levers I and 8 are in ring contracted position as shown in Figures 3 and '7 they are caused to lie within the outer diameter of the ring and close to-the top surface thereof, thus eliminating obstructions which might otherwise interfere with storing the receptacles. Suitable retainers I4 for receiving and holding the outer ends of the respective levers when the ring is fully contracted, may be fixed to the ring by welding or otherwise. To release one of the levers from a retainer I4 it is merely necessary to depress the end of the lever until it will clear the latch I5, and then swing the lever outwardly of the ring.

One end of the ring is slotted as at It to slidably receive the pin H. A pair of links I8 and I9 of different lengths are pivotally connected. at 20 and 2! at one end respectively to the levers I and 8, and are connected together at their other ends by means of the pin II operating in the'slot I6. In the embodiment shown the link I8 is the longer and is offset out of its longitudinal plane at 22 to underlie the shorter link I9.

In removably clamping a cover on the open end of a metallic receptacle of the type described, the cover is placed within the open end and the flange 4 restsupon the packing ring 5 and the supportingbead 2. The ring Sis expanded by throwing the levers I and 8 to the position shown in Figure 6. The ring is then placed over the cover flange and bead until they-lie in the other and when the lever I has reached its limit of movement as defined by its retainer I4, a suf-' flcient closing or vertical pressure will be exerted uniformly around the ring to clamp the cover se curely in place upon the open end of the receptacle. This pressure may not be sufficient to effect a fluid tight seal between the cover and v the receptacle, but it is sufficient. for shipping the receptacles empty to the user. In this movement of lever I the pin Il slides to the extreme left in the slot I6 and engages the end of the slot to complete the driving connection between the ring ends. The lever 8 will not be thus swung to the left but will remain in the position shown in Figure 6. In-order to more: fully contract the ring and bringits end closure together and thereby exertan even greater closing pressure upon the-cover and head, the operator swings the lever 8 to the right in Figure 6 to its limit of movement in this direction as defined by theother retainer I4. During this movement of lever 8 a driving connection is made through the shorter link III, the pin I1, the link I8 andthe lever I to the opposite end'of the ring, and the pin I'I then travels to the right in the'slot I8 to the approximate position shown in Figures 3 and 7. When each of the levers I and 8 reaches its reta ne the lever end isslipped. up under the latch I5 and is thereby retained in place.

Contraction of the ring to its fully closed position may also be accomplished by closing the levers I and 8 simultaneously, or by closing lever 8 and then closing lever I, but I have found that the first method is preferable because it requires less effort and because the cover can first be dumped accurately and then the ring further contracted to apply the sealing pressure to the cover. I

It will be noted that by mounting the operating levers and links upon the upper surface of the ring and permitting the levers to swing outwardly thereof, they are more conveniently reached and handled by the operator.. The operator may stand diametrically opposite of the ring ends and reach over the top of the drum grasp the levers I and 8 and pull them toward imin clockwise and counter-clockwise movements.

While I have described the illustrated embodiment of my invention in some particularity, obviously many others will readily occur to those skilled in this art, and I do not, therefore, limit myself to the precise details shown and described but. claim as my invention all embodiments, variations and modifications thereof coming within the scope of the appended claims.

I claim: I

1. A device for removably clamping a cover on the open end of a receptacle including a split locking ring engaging the cover and a portion of the receptacle to press the same together whenthe ring is contracted,- and means for contracting said ring including a lever pivotally connected with each end of said split ring and operable in opposite directions to contract said ring, and a pair of links pivotally connected together at adjacent ends with an end of the ring and with said levers at their respective other ends.

2. The-combination with a metallic receptacle having a bead around its open end and a cover for said open end having a flange fitting over the bead, and a packing member between the flange and bead, of a split locking ring to press the cover flange and beadtogether in sealing relation, and means for contracting or expanding the ring including a lever pivotally connected with each endof said split ring and a "pair of links pivotally connected together-at adjacent ends with an end of the ring and with said levers at theirrespective other ends, said levers being operable independently of each other to apply independent closing pressures to the cover and receptacle.

3. A device for removably clamping a cover on the open end of a receptacle including a split locking ring engaging the cover and a portion of the receptacle to press the same together when the ring is contracted, and means for contracting said ring including a lever pivotally connected.

with each end of said split ring and operable in opposite directions to contract said ring, and a pivoted member connecting said levers, said pivoted member comprising a pair of links pivotally connected together at their adjacent ends with an end of the ring and with the respective levers at their opposite ends.

4. A device for removably clamping a cover on the open end of a receptacle including a split locking ring engaging the cover and a portionof the receptacle to press the same together when the ring is contracted, and means for contracting said ring including a levenpivotallyconnected with each end of said split ring and operable in opposite directions to contract said ring, and a pair of links pivotally connected together at adjacent ends and with said levers at their respective other ends, one end of said ring having a slot therein and a projection carried by said links and slidable in said slot.

5. A device for removably clamping a cover on the open end of a receptacle-including a split locking ring engaging the cover and a portion of the receptacle to press the same together when the ring is contracted; and means for contracting said ring including a lever pivotally connected with each end' of said split ring and operable in opposite directions to contract said ring, and a pair of links pivotally connected together at their adjacent ends with an end of the ring and with said respective levers at their other I ends, one of said links being of greater length than the other link whereby an initial closing i pressure may be applied to the cover and receptacle prior to a subsequent additional closing pressure.

locking ring engaging the cover and a portion of the receptacle to press the sametogether when the ring is contracted, and means for contracting said ring including a lever pivotally connected with each end of said split ring and operable in opposite directions to contractthe ring, and pivoted members connecting said levers and having a sliding driving engagement with an end of the ring.

'7. A device for remov,ably clamping a cover on the open end of a receptacle including a split locking ring engaging the cover and a portion of the receptacle to press the same together when the ring is contracted, and means for contracting said ring including a lever pivotally connected with each end of-said split ring and operable in opposite directions to contract the ring, and pivoted members connecting said levers and having a. sliding driving engagement with an end of the ring, said ring end having a guide and a? member carried by the pivoted members slidable along said guide.

WILLIAM LOCKHART.

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