US2083401A - Seaming machine - Google Patents

Description

June 8, 1937. H. M. ROSS 2,083,4Q1

SEAMING MACHINE Filed Dec. 7, 1955 2 Sheets-Sheet 2 Patented June 8, 1937 UNITED STATES PATENT OFFKZE.

SEAMING MACHINE Hugh M. Ross, Woodhaven, N. Y. Application December 7, 1935, Serial No. 53,282

2 Claims.

This invention relates to seaming machines and more especially to machines for seaming the ends or heads of non-circular cans to the sides or bodies thereof. In previous seaming machines of this type, it has often been the case that in the seaming of cans long and narrow in horizontal cross-section, the seam was not tightly closed at certain points.

An object of this invention is a seaming machine which is effective to produce a tight seam and is provided with easily operated means for adjusting the seaming mechanism without interfering with the accuracy of operation thereof.

Other objects, novel features and advantages of this invention will become apparent from the following specification and accompanying drawings, wherein:

Fig. 1 is a vertical section through a seaming machine embodying the invention, the section being taken substantially on the line ll of Fig.

Fig. 2 is a bottom plan view of Fig. 1;

Fig. 3 is a plan view of the support for the seaming tool;

Fig. 4 is a section on the line 4-4 of Fig.3;

Fig. 5 is a section on the line 55 of Fig. 3; and

Fig. 6 is a perspective view of the seaming tool carrier.

The can or other article to be operated upon is supported upon a suitable table or base (not shown). The head of the machine includes a member ID which has a chuck portion II to hold the can body and end assembly while being operated upon. The member I9 is carried by a stud l2 forming a fixed or stationary part of the machine. and stud I2 is a disk or head member M which is driven by a ring and bevel gear combination I3. At spaced points around the member M are arranged sets of devices for controlling the seaming tools and as such devices are identical except for the tools per se, only one of these devices will be described. A lever I5 is arranged on the underside of the rotatable member l4 and is pivotally supported from that member by the vertical stud [5 which passes into the member.l4 and is secured in place by a nut IT. The free end of the lever I5 carries a roller I9 which runs in a cam groove 20 in the bottom of the member ID. This groove is made to conform to the out-' line of the can so that when the disk or movable head member [4 rotates about the stud l2; the roller follows a path coinciding with the outline 55 of the cam. As shown, the outline is rectangu- Rotatably mounted upon the member ID lever l5 and on the stud I8 is arranged an eccentric bushing l8a which is held in place by a I nut 21. A second lever 22 is rotatably supported by the bushing I8a. On the under face of the lever 15' adjacent the roller I9 is slidingly mounted a carrier 23 in one end of which is rotatably supported the seaming tool 24- which is shown as in the form of a narrow roller rotatable about a vertical axis. The carrier 23 is mounted for rectilinear movement in such manner that at one end of its stroke the seaming tool 24 is in axial alinement with the roller I9. In the carrier 23 is provided a transverse slot 23a in which is received one end of the lever 22 by which reciprocatory movement is imparted to the carrier 23.

The other end of the lever 22 carries a thrust roller 25 which engages a bearing block 26 carried by the lower arm 27 of a lever which has a vertical pivot portion 28 extending through the rotatable head member l4 and which has a lever arm 29 secured to its upper end. The arm 29 carries a follower roller 30, which is arranged to coact Witha cam 3i.

The various tools 24 are designed and arranged to effect the desired shaping of the metal to form the seam between the head and body. For example, When two of these tools are used, the first may be employed to effect the first stage of the seaming operation and the second to perform the final seaming operation. During the rotation of the head member I4, the seaming tools 24, together with the carriers supporting the same take their general direction of movement from the lever l 5, whereby the tools 24 are caused to move in approximate coincidence with the contour of the article to be seamed. The actuation of the tools whereby they are caused to change the shape of the metal is imparted thereto by the'action of the cam 3! on lever 29 and 27, whereby the levers 22 are shifted upon their pivots so as to move the carriers 23 and seaming ment of the seaming tool during each step of the seaming operation.

By reason of the provision of a seaming tool carrier mounted for rectilinear movement, it is 5 apparent that as the tool Zlis moved inwardly by movement of the lever 22 about its axis during the formation of the same, the tool moves substantially in a straight line extending from the axis of the tool to the vertical axis of the can or other article operated upon. This results in the formation of avery tight seam. Adjustment of the initial position of the seaming tool 24 is effected by means of the eccentric bushing l8a. This bushing may be rotated about the stud I8 to vary the location of the pivotal point of the lever22 and thus move inwardly or outwardly the end of the lever which engages the carrier 23. The adjustment of the tool cantbe made only along a straight line as the carrier 23 is capable.

only of rectilinear movement.

I claim:

1. In a seaming machine, a rotatable head, a

lever pivotally mounted on said head, a guideway on said lever, a carrier mounted in said guideway 25 for, rectilinear movement, a seaming tool-sup ported by said carrier, means for swinging said lever to guide said seaming tool in approximate coincidence with the contour of said article, a. second lever pivoted to said first lever for pivotal movement about an axis intermediateits ends and having one end engaging a portion of said carrier for causing rectilinear movement thereof upon pivotal movement of said second lever, and means for actuating said second lever.

2. In a seaming machine, a rotatable head, a lever pivotally mounted on said head, a guideway on said lever, a carrier mountedin said guideway for rectilinear movement, a seaming tool supported by said carrier, means for swinging said cam and the other end engaging the remaining end of said second lever.

HUGH -M. ROSS.

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