US146946A - Improve went in seaming-machines - Google Patents

Description

(. kH. PERKINS.

SeamingMachines.Y

No. 146,946. K PatentedJnNJM.

UNITED STnTEs GEORGE H. PERKINS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HIMSELF AND JOSEPH LE COMTE, OF NEW YORK CITY, AND ATLANTIC REFINING COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN SEAN]lNGvlVIACHINES.

Specification forming part of Letters Patent No. 146,946, dat-ed January 27, 1874; application filed December 17, 1873.

Casa I3.

.To all whom lt may concern.:

Beit known that I, Gaone-1*. H. PERKINS, ot' Philadelphia, Pennsylvania, have invented a Machine for Closing the Scams of Sheet- Metal Cans, ot which the following is a speciiication:

The object of my invention is to close the top and bottom seams ot' quadrangular cans ot' sheet metal, by combining the Toughened bed f, to Which the sunken top or bottom of the can is pressed, with dies B, as shown in the detached sectional view, Figure l, and plan view, Fig. 2, of the accompanying drawing. The machine in which my invention is incorporated is illustrated by the vertical section, Fig. 3, the plan view, Fig. 2 5 and the vertical section, Fig. 4,011 the diagonal line 'l 2, Fig. 2.

I) is a table, supported on a suitable frame, E, and to horizontal guides on this table are adapted the four slides B. (Best observed in Fig. 2.) A slot in each slide (see detached 4view, Fig. 5) receives the short arm ot' a lever,

I, hung to the table, as shown in Fig. 4; and the long arms ofthe four levers are connected by links a to a cross-head, G, to which a ver tical reciprocating motion can be imparted, from a crank-Wheel, H, on a driving-shaft, through the medium of the rod I, lever J, and rod K, or through any other analogous appliances, the starting and stopping of the drivingshatt being under the prompt control of the attendant. Above the table, and to the outer end of an arm, M, is suspended a plate, N, Which can be depressed by means of a treadle, P, through a rod, Q, a spiral spring', b, tending to raise the rod, arm, and plate at'- t-er the treadle has been released. The arm M is connected to a rod, d, which is arranged to slide in a socket formed in a standard, e, secured to the table D, this socket containing a spring,- on which the end of the rod bears. 'In the center of the table Dis a quadrangular projection or bed, f, and to this bed are secured hardened-steel plates h, (best observed in Figs. 1 and 2,) one plate at each four sides p of the bed, the upper surface of the plates being roughened, like that of a fine file or rasp' Each sliding die B has two edges for acting on the seam of the can, one edge being at right angles to the other, so that each die, acting on two sides ot the can, will close one-fourth, or nearly one-fourth, ofthe bottom seam.

y In Fi g. l, t represents a portion of the sunken bottom plate or base of the can, having all its four edges bent to the form shown, for the reception ofthe sides, a portion of one of which is shown at j, Fig. l.

In operating the machine, the base z' of the can is placed on the' roughened .bed fot" the table A, and adjusted to a position which the open sliding dies themselves determine. The sides ofthe can are then adjusted to the base, and the plate N is depressed by the treadle l) onto the top ot' the can, which is thus held firmly to the roughened bed jl The operator, who, by suitable mechanism, has control ot the driving-shaft, now starts the latter, so that the crank H will, through the rod I, lever J, and rod K, depress the cross-head GA, and thus, through the four rods a and four levers, F, si-

`multaneously move the four sliding dies toward the can, the seam of which is closed 'simultaneously on all four sides. It is essential that there should be no yielding of the base of the can during the operation of the sliding dies 5 otherwise there would be an imperfect compression ofthe seam.

I have found, in practice, that when no cen tral mandrel or raised bed is used as a bearing for the inner shoulder of the sunken base fz', the best medium for preventing such yielding to the pressure ot the dies is the above-inentioned roughened surface, on which the bent edges of the base rest, and to which they are held by the pressure applied to the top of the can, the minute teeth on the bed, combined with this pressure, resisting all attempts ot the dies to disturb any portion of the base of the can, excepting the edges, which they are designed to close against the sides.

. I lay no claim to the Within-described mechanism for operating the sliding dies, which may be actuated by devices other than those shown; no1- do I restrict myself to the use of i and operating substantially in the manner de sliding dies, as theyr may be pivoted, or otherseribed. wise arranged; nor to notched or roughened In testimony whereof I have signed my steel plates as a medium for retaining the base name to this specification in the presence et' ofthe can, as other roughened surfacesthose two subscribing witnesses. of vulcanized emery-bloeks,forinstance-mfly GEORGE H. PERKINS. be substituted for the steel plates; but 5 Tit nesses:

I claim as my invention- W A. STEEL,

The roughened bed f and dies B, fornbiued i HARRY SzvLITH.v

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