USRE4778E - Improvement in machines for closing seams of metallic cans - Google Patents

Description

EDWARD T. COVELL.

Machines for Closing S -eams of MetaHic'Cans.

N 4',778 Reissued March 5,1872;

IZ -j.

WITNESSE 276%. I wwumw of my invention being 'placed upon the mandrel;

UNITED STATES EDWARD T. OOVELL, OF BROOKLYN, NEW YORK.

-PATnnT OFFICE.

. mrnovrnrn m MACHINES FOR CLOSING saws or METALLIC CANS.

Specification forming part of Letters Patent No. 94,947, dated September 21, 1869; antedated September 10, v

1869; reissue No. 4,778, dated March 5, 1872. I I I l SPEoiFmA'rIoN.

which the following is a specification:

My invention relates to the use and arrangement of a supporting block or mandrel to be inserted within an open-ended body of a sheetmetalcan or other vessel, in combination with clamping and compressing blocks or jaws, adapted to close upon and clamp the side seams of the vessel placed upon the mandrel, the mandrel being either left free to move in unison with one of the compressing-blocks or jaws against an opposite fixed block, or made stationary, as an anvil, to resist the compressing force of the blocks closing from opposite sides against it; the object of my said invention being to produce a machine wherein the side seams of a sheet-metal can of any form may be readily closed and clamped after being properly locked or fitted together. My

satd invention relates also to the support of the mandrel in such manner as that it may not only move in unison with the movable compressing-jaw, but also swing upon a pivot out from under the same the object of this part to facilitate the insertion of the can upon the mandrel.

In the accompanying drawing, Figure 1 is a side view of that form of my machine in which the mandrel is made to move against a fixed compressing block or jaw, with a can placed over the mandrel. Fig. 2 is a vertical section in the line a; a: of Fig. 1, showing a can and Fig. 3, a top view of the apparatus,illustratingthe mandrel swung out from the compressing-jaws.

A B represent the two longitudinal clamping and compressing blocks or jaws of my apparatus. In the machine illustrated inthe drawing, the lower block B is fixed upon a bed-plate, O, and the upper block is made to move to and from it in parallel lines and in the same vertical plane by means of a powerpress or other suitable mechanism for the pur- Drvisron B. 7

pose. The block A is guided in its vertical movements by one or more standards or ways DD, arranged at one or both ends thereof. Between the two'compressing-blocks A Bis placed a plate, block, or mandrel, E, Fig. 2, formed and adapted to brace and support from within two or more-of the opposite sides or angles of. a sheet-metal can placed thereon, and to resist the compression of the clampingjaws when bearing thereon from opposite directions. When the compressingjaws both move, this mandrel E may be fixed intermediate the two, or it may be left free to move in a uniform direction with the two, or with oneof them to bear againstthe other, as in the apparatus illustrated in the drawing. In this case the mandrel is supported at either end by means of a rod or pin, F, projecting centrally from each end, and each secured to or resting upon a sleeve, G, embracing and sliding upon an upright pillar or standard, H, encircled by a spring, as illustrated in Figs. 1 and2.

By securingthe pin at one endto its supporting-sleeve, the sleeve forms a hinge to turn upon its pillar as a pivot, and by extendin g the" opposite end, which simply rests upon its appropriate sleeve, a handle, K, is formed, as shown in Fig. 3, by means whereof the mandrel may be swung around from under the compressing-jaws and from between the guide standards, vessel to be readily slipped thereon.

The compressing blocks or jaws are grooved or hollowed out on their inner opposite faces to conform closely to the angles or to the curve of thesides and seams of the can to be operated upon, and the apparatus is adapted. for

elliptical, or flat-sided. The mandrel may be provided with a joint at its pivot-end to permit a semi-revolution thereof on its axis, and when one or more of the seams ave been closed, as described, the others may be brought in place to be closed by apartial revolution of the mandrel without removing the body of the can therefrom. i

The operation of closing seams with the apparatus is as follows: The side seams of the in order to permit the open-endedtrated in Fig'. 2. When the can has thus been placed upon the mandrehthe upper jaw A is moved by the power-press, and hearing upon the corner or seamotthe can will force it and the mandrel down until its lower corner strikes upon and is embraced by the lower jaw 1), and the pressure is continued until the seams are perfectly and tightlyflattened down and closed, the mandrel serving, meanwhile, as an lll'lOl anvil or support. So soon as the uppcrjaw is lifted, the action of the springs will elevate the mandrel and the can thereon clear irom the lower jaw, so that the can may be readily removed therefrom.

The mandrel 1 and the compressing-jaws may all be so secured as to admit of being detached and replaeedvby other forms and sizes thereof to work upon various forms and sizes of cans. 7

It is evident that the machine may be arranged in such a manner as that thejaws or compressing-plates shall move and close upon tally instead of vertically; that each or both of the jaws or compressing-plates may be made mov; ble, and that any suitable means of obtaining pressure maybe employed without departing from my invention, and I contemplate all such variations in the operation and arrangement of my machine.

I claim as my invention- I 1. Longitudinal compressing blocks or jaws, in combination with an interposed longitudinal supporting blocker mandrel, formed and adapted, respectively, the latter to support clamp from without, the side seams of a can placed .upon the mandrel, for the purpose of closing and flattening down said seams, substantially as herein set forth.

2. In combination'with longitudinal compressing blocks or jaws A B, operating to close the side scams or seam of a metallic vessel,

January, 1872.

- E. T. GOVELL. In the presence ot'--- GEORGE S. DOTEN, GEO. CALLAHAN.

the seams of the can or other vessel horizonfrom within, and the former to embrace and substantially as herein described, a central"

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