US2129583A

US2129583A - Method of attaching an opening member to a container

Info

Publication number: US2129583A
Application number: US125903A
Authority: US
Inventors: Carl J Johansson
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-02-20
Filing date: 1937-02-15
Publication date: 1938-09-06
Anticipated expiration: 1955-09-06

Description

S p 6, 1938- c. J. JOHANSSON 2,129,583

METHOD OF ATTACHING AN'OPENING MEMBER TO A CONTAINER Filed Feb. 15, 1937 MQW Patented Sept. 6, 1938 UNITED STATES PATENT OFFICE Carl J. Johansson, Savedalen, Sweden Application February 15, 1937, Serial No. 125,903 In Sweden February 20, 1935 2 Claims.

This invention relates to such tin boxes which are provided with parallel scored or swaging lines in one of the sides, for instance the cover, embracing a comparably narrow strip the breaking 5 away of which will remove said side of the box and make its contents accessible. More specifically this invention has reference to boxes of this class in which a rivet inserted through said side of the box between the two scored or swaging lines projects perpendicularly from the side so as to admit a key to be applied to the rivet and revolved, whereby the strip is broken and wound up around the shaft of the key. Such rivets usually are fastened at the one end of said strip 15 between a. head of the rivet on the innerside of the box and a tightening collar mounted upon the rivet against the outside of the box. As it is indispensable for the-durable upkeep of the preserved ingredient that the attachment of said rivet in the box side is air-tight such device will be rather intricate, which makes it too costly for general purposes notwithstanding its handiness and eflectiveness.

The main object of this invention is to provide for a simplified opening device of the class mentioned without reducing its effectivity and as a consequence to facilitate its employment on account of a decrease in the costs of manufacture.

The principal character of this invention lies therein that the known loosely applied collar is substituted by an upset portion of the exteriorly .projecting shaft of the rivet so that a collar is produced which is integral with the rivet and leaves the exterior end of the shaft projecting 35 like a pin for the key just as does the rivet in the known types of similar means.

In the accompanying drawing an embodiment of this invention is illustrated, whereby Figure 1 represents an upper view of a prcserving tin-box provided with the improved breaking up attachment.

Figure 2 in a partially broken elevation view of the same box.

Figure 3 shows on an enlarged scale an eleva- 45 tion section of a portion of the box with the improved opening rivet inserted through the box side but not yet finally secured thereto.

Figure 4 shows the same opening rivet in nonfinished condition viewed from its outer end,

50 and Figure 5 is a view similar to Figure 3 but with the attaching of the rivet completed.

In the drawing, I designates the narrow strip or tear section which is embraced by the two 55 scored or swaging lines ID in the cover 2 of a preserving tin-box. 3 designates the pin-like end of the breaking up rivet which is secured to cover 2 at the one end of the strip I.

In Figure 3 the rivet 8 is shown on place in the cover 2 but preparatory to the completing of its attachment. method for said completing also. 4 designates diagrammatically a tool comprising two claws or punches which are applied against the shoulder presented by the thickened root portion 6 of the rivet shaft which is inserted through a hole 5 in the cover 2. In Figure 4 the thickened shaft portion 6 is exemplified to be square in crosssection so that the aforesaid shoulder is formed by the difference in configuration between the squared root portion 6 and the cylindrical end portion 3. However, the cross-section of the root portion 6 is arbitrary, and the only requisite is that it is larger than is the cross-section of the end portion 3 so that the aforesaid shoulder appears thereon.

Between the head I of the rivet and the underside of the cover 2 there is applied a thin sheet 8 of some easy fusible soldering metal for the purpose mentioned below. Having inserted the rivet into the hole 5 in the cover 2, the tool 4' is applied against the shoulder of the rivet, and blows or pressure are exerted upon said tool so as to upset the thickened root portion 6 of the rivet shaft against the upper side of the cover 2 forming a collar 60 integral with the projecting pin-like end 3 of the rivet which makes the passage through the hole 5 around the rivet air tight closed simultaneously as the lower integral rivet head I is drawn tight against the under side of the cover. When applying a soldering hammer or such like on the solder 8 this will fuse and fill up any passage through the hole 5 thus establishing a complete air tight joint around the rivet as illustrated by 80 in Figure 5.

What I claim isi 1. The method of attaching an opening member to the tear section of a container having an opening consisting in arranging a fusible metal washer on the shank of a headed rivet, inserting said shank through the opening in the tear section with the washer in contact with the inner surface of the tear section, upsetting a portion of the shank to provide a collar in contact with the other surface of the tear section, and applying heat to the washer to fuse the metal thereof to form an air tight joint.

2. The method of attaching an opening member to the tear section of a container having an opening, consisting in arranging a fusible metal washer on the enlarged shank portion of a headed rivet, inserting said shank portion through the opening in the tear section with the washer in contact with the inner surface of the tear section, upsetting the enlarged shank portion to provide a collar in contact with the other surface of the tear section, and applying heat to the washer to fuse the metal thereof to form an air tight joint.

CARL J. JOHANSSON.

This figure demonstrates the