US2101814A

US2101814A - Receptacle and closure

Info

Publication number: US2101814A
Application number: US19441A
Authority: US
Inventors: Lockhart William
Original assignee: CORNELL SECURITIES CORP
Current assignee: CORNELL SECURITIES Corp
Priority date: 1935-05-02
Filing date: 1935-05-02
Publication date: 1937-12-07
Anticipated expiration: 1954-12-07

Description

Patented Dec. 7, 1937 UNITED STATES PATENT OFFICE RECEPTACLE AND cLosuaE Application May 2, 1935, Serial No. 19,441 1 11 Claims.

simple lever mechanism connecting the ends of the split ring for contracting and/or expanding the same.

Another object of the invention is to eliminate the use of links pivotally connecting a lever or levers with an end of the'split ring and to thereby simplify the construction of such devices without sacrificing effective operation.

A further object is to reduce the cost of manufacture of such devices.

Other objects and advantages of the invention will become more apparent as the following description of one embodiment thereof progresses, reference being made to the accompanying drawing in which like reference characters are employed to designate like parts throughout the same.

In the drawing:-

Figure 1 is a top plan view of one embodiment of my invention applied in use;

Figure 2 is an enlarged section taken on 2-2 of Figure l;

Figure 3 is an enlarged fragmentary view of the clamping device shown in Figure 1 and illustrates the position of the operating lever when the ring is contracted;

Figure 4 is a view similar to that shown in Figure 3 and shows the operating lever in ring expanded position;

Figure 5 is a section taken on line 5--5 of Figure 3; and,

Figure 6 is a section taken on line 6-6 of Figure 3.

Referring now more particularly to the drawing, the barrel or drum is indicated at l. The upper open end of the container is formed with a peripheral bead 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 telescoped for a short distance within the open end of the drum, as illustrated in Figure 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.

line A packing 5 consisting of an annulus of any suit able packing material, such as flexible rubber tubing or cork, is interposed between the flange 4 and the bead 2.

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 of substantially U-shaped cross section and which is capable of being expanded and contracted by suitable means. In the form illustrated the upper and lower flange and bead engaging walls respectively of the ring converge slightly toward the outer 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 to be understood that the ring and receptacle open 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 the ring is expanded. That is, instead of the receptacle being formed with a rolled bead 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 type of clamping ring herein illustrated, the cover flange will be pressed tightly against the packing 5 and the supporting head 2 under a substantially vertical pressure.

In further carrying out my invention I have provided means connecting the ends of the split ring for contracting and/or expanding the ring as in sealing the cover in place on the drum or in removing the same.

Such means, according to the present invention, includes a lever 1 comprising a handle portion 8 and an enlarged substantially disc like fulcrum portion 9. To the ends of the ring defining the split are secured, as by welding, the inwardly projecting lugs or brackets l0 and M. These brackets may be formed integral with the channel wall of the ring, as shown and each is provided at its terminal inner end with a stud or bearing pin I2 or l3. While I have not shown a roller bearing or freely rotatable sleeve carried by each of the studs, it is to be understood that such is within the meaning of my invention, and, when employed, will reduce the friction of the studs against the walls of the slots in the head of the lever and those in the cross piece or bridging member 14 carried by the lever head. The studs arego'f sufiicient'length to pass through these slots and are headed at l5 to prevent accidental displacement of the parts in use.

The member I4 is of suiiicient length to bridge the lugs or brackets I0 and H throughout the fullest contraction or expansion of the ring, and is provided with elongated slots 16 and I! for receiving the studs l2 and I3 respectively. The member I4 is carried by the lever fulcrum portion- 9 and is freely movable relative thereto on the headed pin l8 which defines the actual fulcrum of the lever and is located intermediate the aligned slots l6 and II. It will be seen that the member remains in substantially the same position with respect to the brackets l0 and II since the studs [2 and I3 travel along the slots l6 and I I as the ring is contracted or expanded. These slots and studs thus serve to guide or align the ends of the ring as they approach and depart from each other.

The studs l2 and I3 also operate in the curved slots l9 and 20 formed in the disk-like'head 9 of the lever I. The slots l9 and 20 are preferably substantially spiral in shape agidjare developed from the axis of the pin l8 as a common center but extend along respective diametrically opposed radii throughout their length. These slots, therefore, intersect planes passing through the slots l6 and I7. In this manner, it will be seen that when the lever is swung to the left, or clockwise, in Figure 4 the brackets l0 and II will be drawn together to contract the ring, and when swung in a counter-clockwise direction the ring will be expanded.

As the studs I2 and I3 approach the shorter radii of, the curved slots I9 and 20 they will approach each other as shown in Figure 3 along the elongatedslots l6 and II respectively of the bridging member I4.

I have also provided means for exerting an outwardpressure substantially radially of the ring and against'the upwardly extending portion of the cover flange 4 at a point at or near the spaced ends of the ring. This means consists of a cam bearing surface 2| formed on the head 9 of the lever I and adapted to engage with and press outwardly against the cover flange as the lever is swung in a clockwise direction as in Figure 3. This outward pressure will, of course, draw thering ends inwardly toward the bead and cover flange and thus help to distribute the closing forces more uniformly around the contour of the ring and drum open end during the contraction of the ring.

In eliminating the use of links connecting the lever with a ring end and by providing a member such as the bridging member I4 having a sliding driving connection with the lever head and with the pins in the brackets l0 and H, I have found that retaining devices on the ring for holding the Lever handle in closed position may also be eliminated since the normal forces tending to expand the ring when the ring is contracted are efiectively opposed by the intersecting slots l'll9v and l610 and the respective pins l3 and I2 operating in these slots. However, retainers may be used to seal the lever against tampering in shipment.

While I have described the illustratedembodiment of my invention in some particularity, obviously many others will readily occur to those skilled in this art, and I do not, therei'ore,'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:

1. A device for removably clamping a cover on the open end of a receptacle including a split locking ring having portions engaging the cover and a portion of the receptacle to press the same together when the ring is contracted lugs extending inwardly from the ends of the ring, and means for contracting the ring including a lever having a pair of curved guides formed therein for sliding engagement with projections on said lugs, a projection on each of said lugs, and a member carried by said lever and connected with each'of said lugs.

2.- In a clamping device for a metallic receptacle having a bead formed around its open end and a cover having a flange fitting over the head, a split contractible channeled clamping ring having portions engageable with and pressing the cover flange and bead together when-the ring is contracted, lugs extending inwardly of said ring ends, and means for contracting and expanding the ring including a'member bridging said lugs, a lever pivoted to said member, andv a driving connection between said lever and said lugs, said driving connection comprising curved guides formed in said lever and projections on each of said lugsfor engagement with the respective guides and said bridging member.

3. A device for removably clamping a cover on the open end of a receptacle-including a split locking ring having portions engaging the cover and a portion of the receptacle to press the same together when the ring is contracted, lugs extending inwardly from the ends of the ring, and

means for contracting the ring including a lever having curved guides formed therein, and a projection on each of said lugs and operating in saidrespective guides to draw the ends of the ring together when the lever is swung in one direction.

4. A device for removably clamping a cover on the open end of a. receptacle including a split locking ring having portions engaging the cover and a portion of the receptacle to press the same together when the ring is contracted, lugs .extending inwardly from the ends of the ring, and means for contracting the ring including a member bridging said lugs, a lever pivoted to said member and a pair of curved guides near its fulcrum, said lugs having portions formed for slidable engagement with said guides and said bridging member to provide a driving connection therebetween.

5. A device for removably clamping a cover on the open end of a receptacle including a split locking ring having portions engaging the cover and a portion of the receptacle to press the same together when the ring is contracted, lugs extending inwardly from the ends of the ring, means for contracting the ring including a lever having direct connection with each of said lugs to draw the ends of the ring together when the lever is swung in one direction, said lever having a pair of curved slots formed therein, and 'means on each of said lugs and slidable in said slots to provide a driving connectiontherebetween. v

6. A device for removably clamping a cover on the open endof a receptacle including a split locking ring having portions engaging the cover and a portion of the receptacle to press the same together when the ring is contracted, lugs extending inwardly from the ends of the ring, means for contracting the ring including a lever having direct connection with each of said lugs 76 to draw the ends 0! the ring together when the lever is swung in one direction, said lever having a pair of spiral slots formed therein, and means on each of said lugs and slidable in said slots to provide a driving connection therebetween.

7. A device for removably clamping a cover on the open end of a receptacle including a split locking ring having portions engaging the cover and a portion of the receptacle to press the same together when the ring is contracted, lugs extending inwardly from the ends of the ring, and means for contracting the ring including a lever having. direct connection with eachof said lugs to draw the ends of the ring together when the lever is swung in one direction, said lever having a curved slot nearits fulcrum, means on one of said lugs projecting into said slot to provide a driving connection therebetween, and an elongated member slidably bridging said lugs and having a slot extending lengthwise toward each end of the member, said projecting means on said lug being receivable and slidable in the slots of said member.

8. In a clamping device for a metallic receptacle having a bead formed around its open end and a cover having a flange fitting over the bead, a split contractible channeled clamping ring having portions engageable with and pressing the cover flange and bead together when the ring is contracted, lugs extending inwardly of said ring ends, and means for contracting and expanding the ring including-a member bridging said lugs, studs carried by said lugs and slidably engaging said bridging member, and a lever pivotally connected with said member and slotted to receive said studs.

-9. In a clamping device for a metallic receptacle having a bead formed around its open end and a cover having a flange fitting over the bead, a split contractible channeled clamping ring having portions engageable with and pressing the cover flange and bead together when the ring is contracted, lugs extending inwardly of said ring ends, and means for contracting and expanding the ring including a member bridging said lugs, studs carried by said lugs, said member being slotted to slidably receive said studs, and a lever pivotally connected with said member and slotted to receive said studs.

10. In a clamping device for a metallic receptacle having a bead formed around its open end and a cover having a flange fitting over the bead, a split contractible channeled clamping ring having portions engageable with and pressing the cover flange and bead together when the ring is contracted, lugs extending inwardly of said ring ends, and means for contracting and expanding the ring including a member bridging said lugs, studs carried by said lugs, said mem-' her being slotted to slidably, receive said studs, and a lever pivotally connected with said member and slotted to receive said studs, said lever having a bearing surface adapted to engage said cover flange to impart an outward pressure thereagainst when the ring is contracted.

11. A device for removably clamping a cover on the open end of a receptacle including a split locking ring having portions engaging the cover and a portion of the receptacle to press the same together when the ring is contracted, lugs extending inwardly from the ends of the ring, and means for contracting the ring including a lever having a curved guide formed therein for sliding engagement with a portion of one of said lugs said portion being formed to cooperate with said guide, said lever having pivotal connection with the other of said lugs, and a member carried by said lever and having guided slidable engagement with each of said lugs.

' WILLIAM LOCKHART.