US899827A - Process of making ingots. - Google Patents

Description

4 F. GUTTER. PROCESS 0F MAKING INGOTS. APPLIATION FILED A PR.' 23,1908.

Bgazjy, Patented sepnzg, 1908.

Mr/Essai y y Mm `UNITED sTArEs PATENT oEEIoE.

FRANK CUTTER,

OF PROVIDENCE, RHODE ISLAND.

-PRocEss 0F MAKING Inco'rs.

Specification of 'Letters Patent." Patented Sept. 29, 1908.

Application flied April 23, 190s. serial No'. 428,765.

To-qlZ whom t't-mayconcem: .Be it known that I, FRANK CUTTER, a citizenf of the United States, residing at Provi' dence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Processes of,

.the contacting surfaces and subject to heat to fuse, the intermediate solder sheet. Another method` roposed is to sweat the core and shell together. That is, rely upon the-fusion of the constituent parts of the core and shell to unite the same. vN one of these enumerated processes have been satisfactory, since they all involve a micrometric fit. ting of the core and shell prior to the uniting ste which involves reat .time and expert ski l'to perform, but le ingot and resulting wire was ruined by blisters These blisters always result-above an area where air occurs between the core and shell, by reasonof the uneven flow of solder, or 1mperfect grinding of contacting faces, or the contact of an operatives finger with the surface of the core or shell before'assembling. It has been diflicult to so measure and construct the precious metal shell as to be assured that the thickness of its wall will be uniform throughout its area. f

ITothe' end essentially of overcoming the above enumerated disadvantages, and of securing a perfect and uniform product, and at a minimum of expense and labor, my iin-f proved process consists 1n the steps hereinafter set forth and claimed.

In the drawings which form a part of this specification, Figure 1 is a perspective view Aof-a. base metal core or rod before electrodeposition. Fig. 2 a similar view of the same after the coating or deposit of recious metal thereto, Fig. 3, a like view of t 1e completed ingot, and Fig; 4, a like View of a holow core.. i

Like reference characters indicate lik parts throughout the views. y

In the drawings, A represents a -rod or core of base metal or composition, u on whichI depositby the common metho of electroplatinga coat, layer, skin, or film, B, of

precious metal, such as gold or silver. After the electroplating step it will be found that m, B, is more or less granular in character, soft, and not sufficiently adhesive to the rod, A, for the purposes of seamless wire. The rod `with its 'surrounding skin is next treated by impact, or in other words, it is subjected to beating, pressure, or hammering, which is unifo'rmin force over'the whole area of the rod. ABy this means, the granular character of the deposit, B, is changed, the

film is hardened, its surface is smoothed, and 'a perfect adherence of the skin to the rod, B,

secured. A successful method of performing this step is'by forcing or precipitating shot or other metal objects against the skin, either by ayity or machinery. When shot are empyed, I prefer to place the coated rod in an ordinary rattling barrel or drum contain-K ing shot, and rotate the drum; by which' means the desired ends are attained.. A more olished surface is secured by mixing with the shota liquid soap. If a thin plating o f metal is all that is desiredtl1e ingot is now complete and readyfor reduction to seamless wire by any of the usual methods for that purpose. If a' heavier plate is demanded, the above described plating and beating steps are repeated.

In constructing ingots intended for reduction nto hollow wire or tubing, so called, the core employed in `my process is of hollow form, as shown in Fig. 4. During the electroplating ste however, it is desirable to close the ends o' the hollow core, A, by plugs or otherwise. .v I make no claim to the process of plating flat plates for protecting the coreagainst moisture, nor broadly to electro-plating. I plate substantially cylindrical or seamless A mem-bers by impact.'

/Hav'ng described claim is:

1. 'The improved rocess of making cylindrical ingots adapted) to bereducedjto` seamless wire, consisting in depositing' npon a metallic rod by electrolysis a film of another metal, and impacting simultaneously all parts Aof the metal after it is so deposited upon the rod. 1

2. The improved rocess drical ingots adapter to be reduced to seamless wire, consistlng in depositing upon a rod my process, 'what I vof inferior metal by electrolysls a film of 4ot making cylinprecious metal and impacting simultaneously all parts of the metal after it is so deposited. upon the rod.

v 3. The improved rocess of making cylin.- dricalingo'ts adapte to be reduced to seamless wire, consisting in depositing upon a less Wire, consisting in depositing upon a me- A tallic rod by electrolysis a ilm of another metal, and precipitating metal objects by impact against the coated rod. Y -A 5. The improved rocess of making cylindrical lingots'adapteg to be reduced to seam'- less Wire2 consisting in depositing upon a me tallic rod by electrolysis a film of another metal, and precipitating metal objects and 'soap by impact againstv the coated rod. l

6. The improved process of making ingots adapted to be reduced to seamless wire, which consists in depositing upon a core of base metal a ilm of another metal and subsequently impacting the outer metal throughout its entire surface for the pupose specified. In testimony whereof I have affixed my signature in presence of two witnesses.

FRANK CUTTER.

Witnesses:

HoRATIo E. BELLows, JOSEPH E. BURNS.

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