US150887A - Improvement in machines for uniting tinned plates by heat and pressure - Google Patents

Description

Machines for U nit ing Tin ned Plates by Heat and* Pressure.

PatentedMay 12. 1374.l

Ill

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GEORGE H. PERKINS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO 4HIMSELF AND JOSEPH LE COMTE, OF NEW YORK CITY, AND ATLANTIC REFINING COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN MACHINES FOR UNITINGTINNED PLATES BY HEAT AND PRESSURE.

Specification forming part of Letters Patent No. 150,887, date d May 12, 1874; applic ation iilcd March 18, 1874,

CAsE M.

To all whom it may concern:

Be it known that I, GEORGE H. PERKINS, of the city of Philadelphia, Pennsylvania, have invented an Apparatus for Uniting Tinned or Amalgam Plates by Heat and Pressure, of which the following is a specification:

The object of my invention is to carry out ihe heat and pressure process ofuniting tinned or amalgam plates, for which Letters Patent N o. 85,7 42 were granted to Joseph Le Comte, on the 12th day of January, 1869, by the mechanism which I will now proceed to describe, reference being had to the accompanying drawing, in which- 4 Figure 1 isa front elevation, partly in section, of a soldering-press with my improvements; Fig. 2, a transverse sectional elevation of the same; Fig. 3, a sectional plan, showing the arrangement of several presses upon a single frame; Figs. 4 and 5, enlarged sectional views of the dies, Fig. 6, an enlarged perspective view of the lower die; Figs. 7 and 8, sectional views of the lower die and bed of the press; Fig. 9,1` an inverted perspective view of the detachable upper die or soldering-iron; and Figs. 10 and 11, perspective views of the lid of a tin-can, and of a handle and handleplate to be soldered thereto by the action of heated dies.

In the present instance a number of presses,

A A1, A2, Sac., are arranged in a row upon a single frame, B, as shown in Fig. 3, which reduces their cost, and enables one attendant to operate several without inconvenience. Each press has a bed-plate, D, to which the lower die E is secured, and a guided plunger or head, F, which carries the upper die G, thc said plunger ordie-head being raisedand lowered by a cam-lever, H, hung to the frame. of the press at a, as shown in Figs. 1 and 2. The lower die E consists of -several separate `sections, b, arranged side by side, and resting at their bases upon rubber or other springs cl, contained within a groove of the bed-plate, as shown in Fig. 7 and 8, by which means an ,exact parallelism of the upper and lower dies is obtained, as fully described in a separate application for a patent, which I have made simultaneously with this. The several sections ot the die are retained in their proper positions, and detached from the object to be soldered in event of adhering thereto, by a transverse rod, e, secured at its opposite ends to projections fof the bed-plate, and extending through slots in the said sections, in such manner as not to interfere with their free yielding movement. (See Figs'. 5 and 7.) The upper die or soldering-tool G consists of a block of metal provided with a handle, j, for convenience in carrying it to and from the heatin g-furnace, and having opposite beveled edges g g, adapted to a dovetailed groove, h, in the die-head, its proper position within the latter in respect to the lower die E being determined by a gage or stop-pin, c', in the said groove. (See Figs. 4., 5, and 9.) When a small portion only of a sheetemetal plate has to be heated, in carrying ont the heat and pressure process of soldering, the said portion is apt to become so expanded or slackened as to distort the plate, and thus interfere materially with the formation of i a perfect soldered joint. This I have found to be especially noticeable in solA dering a small object, such as a handle-plate, 7.', to the center of the lid l of` a tin can, (see Figs. l() and 11,) but the objection can be en tirely overcome by bulging the metal by means of the dies, so as to take up the slack simultaneously with the application of the heat and pressure of the said dies to effect the solder ing. This will be readily understood by referring to Figs. 4 and 5, where it will be seen that the heated upper die has a projecting face adapted to the correspondingly sunken or re cessed face of the lower die E, so that the tin plates must be bulged by the dies sufciently to take up the slack, at the same time that they are pressed together to effect a union, by the melting and subsequent cooling of the tin or amalgam on the adjoining surfaces of the said plates. In carrying out this feature of my invention, one die may have several projections and recesses, adapted to corresponding projections and recesses on the oppo m, shown in. Figs. 1, 2, and 3, when submitted to the action of the dies. The projecting central portion of the handle-plate, and the part of the handle contained therein, which are not to be soldered or pressed, are received within a depression, p, formed for their reception in the lower die, and the latter is also cut away or recessed at one side, so that the bail or handle may hang freely from the handleplate during the soldering operation. (See Figs. 4, 5, and 6.)

I claim as my inventionl. A machine for soldering by heat and pressure, in which the dies are constructed I and adapted to each other, substantially as hei ein described, so as to bulge the portion of the sheet metal 'subjected to them simultaneously with the soldering .of the same, for the purpose spcciiied.

2. The combination, substantially as .described, of the soldering-ironor die G, having beveled edges g, with the die-head F, its dovetailed groove h, and stop i.

3. The die E, constructed substantially as described, with a groove or recess, p, for the reception of a projecting portion of the sheet metal which is not to be pressed or soldered.

4:. The die E, consisting of two or more separate sections, b, resting upon rubber or other yielding and elastic material, and retained in position by a rod, 6, secured to the bed-plate, and extending throughv slots in the said sections, all substantially as specied.

5. The sectional die E, recessed at the top and side, and otherwise constructed, substantiall'y as described, for the reception and re vtention of the handle-plate and handle during the operation of soldering the same to the lid of a can.

In testimony whereof I have signed my name to this specification in the presence of two 'subscribing witnesses.

GEORGE H. PERKINS.

Witnesses WM. A. STEEL,

HUBERT HowsoN.

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